TWI788663B - Flexible tube manufacturing apparatus - Google Patents

Flexible tube manufacturing apparatus Download PDF

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Publication number
TWI788663B
TWI788663B TW109115955A TW109115955A TWI788663B TW I788663 B TWI788663 B TW I788663B TW 109115955 A TW109115955 A TW 109115955A TW 109115955 A TW109115955 A TW 109115955A TW I788663 B TWI788663 B TW I788663B
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resin
mentioned
opening
valve mechanism
flow path
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TW109115955A
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Chinese (zh)
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TW202043004A (en
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菊澤良治
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日商Pla技研股份有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154Coating solid articles, i.e. non-hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/255Flow control means, e.g. valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/695Flow dividers, e.g. breaker plates
    • B29C48/70Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

本發明所提供的軟管之製造裝置,係能連續式擠出成形硬度沿長度方向逐漸改變之樹脂層、與前端之軟尖端。 本發明的軟管之製造裝置,係具備有:可改變第1樹脂與第2樹脂之混合比的混合閥機構;可選擇性將從混合閥機構所擠出之樹脂或從擠出機所擠出的柔軟第3樹脂,供應給模具的切換閥機構;以及控制裝置。控制裝置係依在擠出成形時,將從混合閥機構所擠出之樹脂供應給模具的方式,對切換閥機構進行控制之狀態下,使混合閥機構中的樹脂混合比改變,若第2樹脂的比率到達既定值,便依第3樹脂供應給模具的方式控制著切換閥機構。The hose manufacturing device provided by the present invention can continuously extrude a resin layer whose hardness gradually changes along the length direction and a soft tip at the front end. The hose manufacturing device of the present invention is equipped with: a mixing valve mechanism capable of changing the mixing ratio of the first resin and the second resin; The soft third resin is supplied to the switching valve mechanism of the mold; and the control device. The control device changes the resin mixing ratio in the mixing valve mechanism while controlling the switching valve mechanism in such a way that the resin extruded from the mixing valve mechanism is supplied to the mold during extrusion molding. When the ratio of the resin reaches a predetermined value, the switching valve mechanism is controlled according to the way that the third resin is supplied to the mold.

Description

軟管之製造裝置Hose manufacturing equipment

本發明係關於用以擠出成形由樹脂被覆著編包線外面之軟管的軟管製造裝置。 The present invention relates to a hose manufacturing device for extruding a hose whose outer surface is covered with a braided wire by resin.

在醫療機構中,為將藥液、顯影劑等注入至患者活體內的既定部位、或為取出活體內的體液等,有使用通稱「導管」的細管狀醫療器具。因為該導管係通過彎曲的血管等再插入至活體內,為能不傷到血管等,且容易沿血管等彎曲部分彎曲,因而對其前端部分要求柔軟性。另一方面,針對導管中未插入至活體內的部分,為使導管容易操作,而要求適度的剛性。所以,有各種提案使硬度依前端柔軟、靠手邊操作端較堅硬的方式,沿長度方向逐漸改變的導管之製造裝置。例如專利文獻1所記載的裝置,藉由一邊使不同硬度的2種樹脂之混合比改變,一邊擠出至編包線外面,便可製造使硬度沿長度方向連續性改變的軟管。 In medical institutions, thin tube-shaped medical devices commonly called "catheters" are used to inject liquid medicines, contrast agents, etc. into predetermined parts of the patient's living body, or to remove body fluids from the living body. Since the catheter is reinserted into the living body through a curved blood vessel or the like, flexibility is required at the distal end thereof so as not to injure the blood vessel or the like and to be easily bent along the curved portion of the blood vessel or the like. On the other hand, a portion of the catheter that is not inserted into the living body is required to have appropriate rigidity in order to facilitate handling of the catheter. Therefore, various proposals have been made for a catheter manufacturing device in which the hardness is gradually changed along the length direction in such a way that the front end is soft and the operating end is harder. For example, the device described in Patent Document 1 can manufacture a hose whose hardness is continuously changed along the length direction by extruding to the outside of the braided wire while changing the mixing ratio of two resins with different hardness.

[先前技術文獻] [Prior Art Literature] [專利文獻] [Patent Document]

[專利文獻1] 日本專利第6144862號公報 [Patent Document 1] Japanese Patent No. 6144862

可抑制血管損傷、更加提升安全性的導管,係有在前端部設置通稱「軟尖端」之長度數mm~數cm程度的柔軟管狀部分。 Catheters that can suppress blood vessel damage and improve safety have a flexible tubular part called a "soft tip" at the front end of a few millimeters to several centimeters in length.

本發明之目的在於提供:能連續式擠出成形硬度沿長度方向逐漸改變之樹脂層、與前端之軟尖端的軟管之製造裝置。 The object of the present invention is to provide: a manufacturing device capable of continuous extrusion molding of a resin layer whose hardness gradually changes along the length direction and a soft tip at the front end.

本發明的軟管之製造裝置,係具備有:模具、第1擠出機、第2擠出機、混合閥機構、第3擠出機、切換閥機構、及控制裝置;而,該模具係具備有:使編包線插通的插通孔、以及將樹脂擠出至通過插通孔之編包線表面的擠出口;該第1擠出機係擠出第1樹脂;該第2擠出機係擠出較第1樹脂更柔軟的第2樹脂;該混合閥機構係可擠出由從第1擠出機所擠出之第1樹脂、與從第2擠出機所擠出之第2樹脂混合的樹脂,且可改變第1樹脂與第2樹脂之混合比;該第3擠出機係擠出較第2樹脂更柔軟的第3樹脂;該切換閥機構係可將從混合閥機構擠出的樹脂、或從第3擠出機擠出的第3樹脂選擇性供應給模具;該控制裝置係對混合閥機構與切換閥機構進行控制。於軟管擠出成形時,在控制著切換閥機構使從混合閥機構所擠出的樹脂供應給模具之狀態下,控制裝置依從混合閥機構擠出的樹脂中之第2樹脂比率增加至既定值的目的,控制著混合閥機構,當第2樹脂比率達既定值時,便控制切換閥機構使第3樹脂供應給模具。 The manufacturing device of the hose of the present invention is equipped with: a mold, a first extruder, a second extruder, a mixing valve mechanism, a third extruder, a switching valve mechanism, and a control device; and the mold is Equipped with: an insertion hole for inserting the braided wire, and an extrusion port for extruding the resin to the surface of the braided wire passing through the insertion hole; the first extruder extrudes the first resin; the second extruder The extruder extrudes the second resin which is softer than the first resin; the mixing valve mechanism can extrude the first resin extruded from the first extruder and the resin extruded from the second extruder The resin mixed with the second resin, and the mixing ratio of the first resin and the second resin can be changed; the third extruder extrudes the third resin which is softer than the second resin; The resin extruded by the valve mechanism or the third resin extruded from the third extruder is selectively supplied to the die; the control device controls the mixing valve mechanism and the switching valve mechanism. During hose extrusion molding, in the state where the switching valve mechanism is controlled so that the resin extruded from the mixing valve mechanism is supplied to the mold, the control device increases the ratio of the second resin in the resin extruded by the mixing valve mechanism to a predetermined value. The purpose of the value is to control the mixing valve mechanism. When the ratio of the second resin reaches a predetermined value, the switching valve mechanism is controlled to supply the third resin to the mold.

根據本發明可提供:能連續式擠出成形硬度沿長度方向逐漸改變之樹脂層、與前端之軟尖端的軟管之製造裝置。 According to the present invention, it is possible to provide a manufacturing device capable of continuously extruding a resin layer whose hardness gradually changes along the length direction and a soft tip at the front end.

1:模具 1: Mold

2a:第1擠出機 2a: 1st extruder

2b:第2擠出機 2b: The second extruder

2c:第3擠出機 2c: The 3rd extruder

3:混合閥機構 3: Mixing valve mechanism

4:切換閥機構 4: Switching valve mechanism

5:控制裝置 5: Control device

6:編包線 6: braided wire

7:軟管 7: Hose

11:內模 11: Internal mold

12:外模 12: Outer mold

13,47a,47b,49a,49b,50a,50b:貫通孔 13, 47a, 47b, 49a, 49b, 50a, 50b: through holes

14:擠出口 14: Extrusion port

15,24,58a,58b,62,63a,63b:流路 15,24,58a,58b,62,63a,63b: flow path

16:樹脂注入口 16: Resin injection port

18a:第1閥 18a: 1st valve

18b:第2閥 18b: 2nd valve

19,22,35:馬達 19,22,35: motor

20:螺桿 20: screw

21,32:箱體 21,32: Box

23,31:閥體 23,31: valve body

33:安裝構件 33: Install components

34:間隔物 34: spacer

37:第1分割體 37: The first split body

38:第2分割體 38: The second split body

39:第3分割體 39: The third split body

40a,40b,41a,41b,42:端面 40a, 40b, 41a, 41b, 42: end face

43a:第1注入口 43a: The first injection port

43b:第2注入口 43b: The second injection port

44:樹脂供應口 44: Resin supply port

45a:第1排出口 45a: 1st outlet

45b:第2排出口 45b: The second discharge port

48,51:溝 48,51: ditch

54a:開口部(第6開口部) 54a: opening (sixth opening)

54b:開口部(第1開口部) 54b: Opening (first opening)

55a:開口部(第7開口部) 55a: opening (7th opening)

55b:開口部(第2開口部) 55b: Opening (second opening)

57:平面部 57: Plane Department

59a:溝(第8開口部) 59a: Groove (8th opening)

59b:溝(第9開口部) 59b: Groove (9th opening)

64:開口部(第3開口部) 64: Opening (third opening)

65a:開口部(第4開口部) 65a: opening (4th opening)

65b:開口部(第5開口部) 65b: Opening (fifth opening)

71:硬度遷移部 71: Hardness Migration Department

72:軟尖端 72: soft tip

100:軟管製造裝置 100:Hose manufacturing device

AX:中心軸 AX: central axis

圖1係實施形態的軟管製造裝置之概略構成正視圖;圖2係從圖1所示II-II線觀看的剖視圖;圖3(A)及(B)係圖1所示切換閥機構的放大圖與部分剖視圖;圖4(A)至(F)係圖3所示切換閥機構的剖視圖;圖5(A)至(F)係圖3所示切換閥機構的動作說明示意圖;以及圖6(A)至(D)係由控制裝置進行的控制方法說明圖。 Fig. 1 is a schematic front view of the composition of the hose manufacturing device of the embodiment; Fig. 2 is a cross-sectional view viewed from the line II-II shown in Fig. 1; Fig. 3 (A) and (B) are views of the switching valve mechanism shown in Fig. 1 Enlarged view and partial cross-sectional view; Figure 4 (A) to (F) is a cross-sectional view of the switching valve mechanism shown in Figure 3; Figure 5 (A) to (F) is a schematic diagram of the action description of the switching valve mechanism shown in Figure 3; and 6(A) to (D) are explanatory diagrams of the control method performed by the control device.

以下,針對本發明實施形態進行說明。以下說明中,針對在屬於樹脂層的內層細管之外表面設置之編包管(網管),更利用屬於樹脂層的外層細管被覆著編包管的軟管製造裝置,採用本發明之例子進行說明。此種軟管之一例係可例如導管軸。然而,導管軸只不過係軟管之一例而已,本發明亦可適用於內視鏡所使用的軟管等其他用途之軟管的製造裝置。 Embodiments of the present invention will be described below. In the following description, an example of the present invention will be used to describe a hose manufacturing device in which the braided tube (network tube) is provided on the outer surface of the inner thin tube belonging to the resin layer and the outer thin tube belonging to the resin layer is covered with a braided tube. An example of such a hose may be, for example, a catheter shaft. However, the catheter shaft is only an example of the tube, and the present invention can also be applied to a tube manufacturing device for other purposes such as a tube used in an endoscope.

圖1所示係實施形態的軟管製造裝置之概略構成正視圖;圖2所示係從圖1所示II-II線觀看到的剖視圖。 FIG. 1 is a front view showing a schematic configuration of a hose manufacturing device according to an embodiment; FIG. 2 is a cross-sectional view viewed from line II-II shown in FIG. 1 .

軟管製造裝置100係使用樹脂而擠出成形軟管7的裝置,具備有:模具1、第1擠出機2a、第2擠出機2b、第3擠出機2c、混合閥機構3、切換閥機構4、及控制裝置5。又,軟管製造裝置100係經由基座固定於既定的台架等之上。又,雖省略圖示,但在模具1的上游端與下游端適當設置供應編包線6用的供應裝置、拉取經擠出成形的軟管7之拉取裝置等。編包線6係從軟管製造裝置100的後方朝前方搬送。以下說明中,有使用xyz的3軸正交座標系統將方向特定的情況,將構成切換閥機構4的閥體31其中心軸之平行軸設為x軸,將編包線6搬送方向的平行軸設為y軸,將鉛直方向的平行軸設為z軸。又,編包線6係例如在內層細管上設 置編包管(網管),呈現在內層中部的中空部插通著芯線(導引線)之狀態。軟管7係在編包線6表面設置外層細管,藉由在外層細管成形後抽出編包線6的芯線,便可獲得導管軸。 The hose manufacturing apparatus 100 is an apparatus for extruding and molding the hose 7 using resin, and includes a die 1, a first extruder 2a, a second extruder 2b, a third extruder 2c, a mixing valve mechanism 3, The valve mechanism 4 and the control device 5 are switched. In addition, the hose manufacturing apparatus 100 is fixed to a predetermined stand or the like via a base. Also, although not shown, a supply device for supplying the braided wire 6, a pulling device for pulling the extruded hose 7, etc. are appropriately provided at the upstream end and the downstream end of the mold 1. The braided wire 6 is conveyed from the rear of the hose manufacturing apparatus 100 toward the front. In the following description, there is a case where the direction is specified using a three-axis orthogonal coordinate system of xyz. The axis parallel to the central axis of the valve body 31 constituting the switching valve mechanism 4 is defined as the x-axis, and the axis parallel to the conveying direction of the braided wire 6 is defined as Let the axis be a y-axis, and let the parallel axis of a vertical direction be a z-axis. Again, the braided wire 6 is, for example, provided on the thin tube of the inner layer The braided tube (network tube) is placed in a state where the core wire (guide wire) is inserted through the hollow part in the middle of the inner layer. The hose 7 is provided with an outer thin tube on the surface of the braided wire 6, and the catheter shaft can be obtained by pulling out the core wire of the braided wire 6 after the outer thin tube is formed.

模具1係用來將樹脂擠出至編包線6外面用的模具,具備有:內模11與外模12。在內模11的中心軸部分設有使編包線6插通的貫通孔13。外模12具有中空部,在中空部收容著內模11。在內模11的外周面、與外模12中空部的內周面之間,形成由既定間隙形成的樹脂流路15。外模12係設有與內模11之中心軸同軸的擠出口14。該擠出口14構成流路15的前端。又,在外模12中設有與流路15連通的樹脂注入口16。樹脂注入口16係連接於後述切換閥機構4之樹脂供應口44(流路62的下游端部)。供應給樹脂注入口16的樹脂通過流路15流向擠出口14,再通過內模11的貫通孔13與擠出口14,擠出至朝前方繞出的編包線6之表面上。又,內模11相對於外模12呈固定。 The mold 1 is a mold used to extrude the resin to the outside of the braided wire 6 and includes an inner mold 11 and an outer mold 12 . A through hole 13 through which the braided wire 6 is inserted is provided at a central axis portion of the inner mold 11 . The outer mold 12 has a hollow portion, and the inner mold 11 is accommodated in the hollow portion. Between the outer peripheral surface of the inner mold 11 and the inner peripheral surface of the hollow part of the outer mold 12, a resin flow path 15 formed by a predetermined gap is formed. The outer mold 12 is provided with an extrusion port 14 coaxial with the central axis of the inner mold 11 . The extrusion port 14 constitutes the front end of the flow path 15 . In addition, a resin injection port 16 communicating with the flow path 15 is provided in the outer mold 12 . The resin injection port 16 is connected to the resin supply port 44 (the downstream end of the flow path 62 ) of the switching valve mechanism 4 described later. The resin supplied to the resin injection port 16 flows to the extrusion port 14 through the flow path 15, and then passes through the through hole 13 and the extrusion port 14 of the inner mold 11, and is extruded onto the surface of the braided wire 6 wound forward. Also, the inner mold 11 is fixed to the outer mold 12 .

第1擠出機2a、第2擠出機2b及第3擠出機2c係例如螺桿擠出機,可使樹脂顆粒熔融,依一定速度從前端的吐出口擠出。分別對第1擠出機2a、第2擠出機2b及第3擠出機2c供應不同硬度的第1樹脂、第2樹脂及第3樹脂。具體而言,第1樹脂係硬度最高的樹脂,第2樹脂係較第1樹脂柔軟的樹脂,第3樹脂係較第2樹脂更為柔軟的樹脂。從第1擠出機2a與第2擠出機2b擠出的熔融樹脂,供應給後述混合閥機構3,利用混合閥機構3調整為既定混合比。另一方面,從第3擠出機2c擠出的熔融樹脂供應給後述的切換閥機構4。 The first extruder 2a, the second extruder 2b and the third extruder 2c are, for example, screw extruders, which can melt the resin pellets and extrude them from the outlet at the front end at a constant speed. The 1st resin, the 2nd resin, and the 3rd resin which differ in hardness are supplied to the 1st extruder 2a, the 2nd extruder 2b, and the 3rd extruder 2c, respectively. Specifically, the first resin is a resin with the highest hardness, the second resin is a softer resin than the first resin, and the third resin is a softer resin than the second resin. The molten resin extruded from the first extruder 2a and the second extruder 2b is supplied to a mixing valve mechanism 3 described later, and is adjusted to a predetermined mixing ratio by the mixing valve mechanism 3 . On the other hand, the molten resin extruded from the 3rd extruder 2c is supplied to the switching valve mechanism 4 mentioned later.

混合閥機構3係將從第1擠出機2a擠出的第1樹脂、與從第2擠出機2b擠出的第2樹脂混合,可將經混合的樹脂供應給後述的切換閥機構4,且能連續式或階段式變更第1樹脂與第2樹脂的混合比。本實施 形態的混合閥機構3係包括有:第1閥18a、第2閥18b、馬達19、螺桿20、箱體21、及馬達22。第1閥18a與第2閥18b分別由可圍繞中心軸旋轉的閥體23、與箱體21其中一部分構成。在箱體21中設有閥體23之圓柱狀部分的對應形狀中空部,在該中空部中可旋轉地收容著閥體23。閥體23係安裝於馬達19上,利用馬達19的旋轉力可使旋轉位置改變。螺桿20係收容於箱體21中所設置的中空部內。在螺桿20的外周面、與箱體21中空部的內周面之間,形成由既定間隙構成的流路24。又,螺桿20係連接於馬達22,利用馬達22的旋轉力圍繞中心軸旋轉,可將供應給流路24的2種樹脂均勻混合。又,馬達19與22的旋轉係利用後述控制裝置5進行控制。 The mixing valve mechanism 3 mixes the first resin extruded from the first extruder 2a with the second resin extruded from the second extruder 2b, and can supply the mixed resin to the switching valve mechanism 4 described later. , and the mixing ratio of the first resin and the second resin can be changed continuously or stepwise. This implementation The mixing valve mechanism 3 of the form includes a first valve 18 a, a second valve 18 b, a motor 19 , a screw 20 , a case 21 , and a motor 22 . The first valve 18a and the second valve 18b are respectively composed of a valve body 23 rotatable around a center axis, and a part of the case body 21 . A correspondingly shaped hollow portion of the cylindrical portion of the valve body 23 is provided in the case 21, and the valve body 23 is accommodated rotatably in the hollow portion. The valve body 23 is installed on the motor 19, and the rotation position can be changed by the rotation force of the motor 19. The screw 20 is housed in a hollow provided in the box 21 . Between the outer peripheral surface of the screw 20 and the inner peripheral surface of the hollow part of the case 21, the flow path 24 which consists of predetermined gaps is formed. In addition, the screw 20 is connected to the motor 22, and the rotation force of the motor 22 rotates around the central axis, so that the two types of resins supplied to the flow path 24 can be uniformly mixed. In addition, the rotation system of the motors 19 and 22 is controlled by the control device 5 described later.

第1閥18a係具備有:為將從第1擠出機2a所供應之第1樹脂其中一部分或全部供應給流路24用的流路(未圖示)、與為將從第1擠出機2a所供應之第1樹脂其中一部分或全部排出(廢棄)至外部用的流路(未圖示)。第1閥18a係配合閥體23的旋轉位置,可變更:對流路24所供應之樹脂的量比、與廢棄樹脂的量比。同樣,第2閥18b係具備有:為將從第2擠出機2b所供應之第2樹脂的其中一部分或全部供應給流路24用的流路(未圖示)、與為將從第2擠出機2b所供應之第2樹脂的其中一部分或全部排出(廢棄)至外部用的流路(未圖示)。第2閥18b係配合閥體23的旋轉位置,可變更:供應給流路24之樹脂的量比、與廢棄樹脂的量比。 The first valve 18a is equipped with a flow path (not shown) for supplying part or all of the first resin supplied from the first extruder 2a to the flow path 24, and for Part or all of the first resin supplied by the machine 2a is discharged (discarded) to an external flow path (not shown). The first valve 18a can change the amount ratio of the resin supplied to the flow path 24 and the amount ratio of the waste resin in accordance with the rotation position of the valve body 23 . Similarly, the second valve 18b is provided with a flow path (not shown) for supplying part or all of the second resin supplied from the second extruder 2b to the flow path 24, and for supplying the second resin from the second extruder 2b. 2 Part or all of the second resin supplied from the extruder 2b is discharged (discarded) to an external channel (not shown). The second valve 18b can change the amount ratio of the resin supplied to the flow path 24 and the amount ratio of the waste resin in accordance with the rotation position of the valve body 23 .

第1閥18a與第2閥18b的各自閥體23之旋轉位置係由後述控制裝置5進行控制。控制裝置5係藉由同步控制第1閥18a與第2閥18b,便可在將從第1閥18a供應給流路24的第1樹脂量、與從第2閥18b供應給流路24的第2樹脂量合計維持一定狀態下,藉由改變分別由第1閥18a與第2閥18b供應給流路24的樹脂量,便可使通過流路24供應給切換閥機構4的第1樹脂與第2樹脂之混合比改變。 The rotational positions of the respective valve bodies 23 of the first valve 18a and the second valve 18b are controlled by a control device 5 described later. By synchronously controlling the first valve 18a and the second valve 18b, the controller 5 can balance the amount of the first resin supplied from the first valve 18a to the flow path 24 and the amount of resin supplied to the flow path 24 from the second valve 18b. When the total amount of the second resin is kept constant, by changing the amount of resin supplied to the flow path 24 by the first valve 18a and the second valve 18b respectively, the first resin supplied to the switching valve mechanism 4 through the flow path 24 The mixing ratio with the second resin is changed.

再者,混合閥機構3係在能使2種樹脂的混合比改變,且將2種樹脂均勻混合供應給切換閥機構4之前提下,其餘並無特別的限定,例如混合閥機構3係使採用日本專利第6144862號所記載的構成。 Furthermore, the mixing valve mechanism 3 is under the premise that the mixing ratio of the two resins can be changed, and the two kinds of resins can be uniformly mixed and supplied to the switching valve mechanism 4, and the rest are not particularly limited. For example, the mixing valve mechanism 3 uses The structure described in Japanese Patent No. 6144862 is adopted.

切換閥機構4係可將從混合閥機構3吐出的樹脂、或從第3擠出機2c擠出的第3樹脂中之任一者,選擇性供應給模具1。切換閥機構4的詳細內容係如後述。 The switching valve mechanism 4 can selectively supply either the resin discharged from the mixing valve mechanism 3 or the third resin extruded from the third extruder 2 c to the die 1 . Details of the switching valve mechanism 4 will be described later.

控制裝置5係包含有對混合閥機構3與切換閥機構4進行控制的電腦。控制裝置5係連接於混合閥機構3所具備之第1閥18a與第2閥18b的各自馬達19,藉由使閥體23的旋轉角改變,而控制混合閥機構3的第1樹脂與第2樹脂之混合比。又,控制裝置5係連接於切換閥機構4的後述馬達35,切換從切換閥機構4供應給模具1的樹脂。利用控制裝置5進行控制的詳細內容係如後述。 The control device 5 includes a computer for controlling the mixing valve mechanism 3 and the switching valve mechanism 4 . The control device 5 is connected to the respective motors 19 of the first valve 18a and the second valve 18b included in the mixing valve mechanism 3, and controls the first resin and the second valve of the mixing valve mechanism 3 by changing the rotation angle of the valve body 23. 2 The mixing ratio of the resin. Moreover, the control device 5 is a motor 35 described later connected to the switching valve mechanism 4 , and switches the resin supplied from the switching valve mechanism 4 to the mold 1 . Details of the control by the control device 5 will be described later.

以下,合併參照圖1~圖4,針對切換閥機構4的構成進行詳細說明。 Hereinafter, the configuration of the switching valve mechanism 4 will be described in detail with reference to FIGS. 1 to 4 in combination.

圖3所示係圖1所示切換閥機構的放大圖與部分剖視圖。更詳言之,圖3(A)係相當於圖1所示切換閥機構的放大圖,圖3(B)係相當於圖3(A)所示閥體以外的部分,從平行於xz平面且包含閥體中心軸AX的平面進行切剖的部分剖視圖。又,圖4所示係圖3所示切換閥機構的剖視圖,圖4(A)、圖4(B)、圖4(C)、圖4(D)、圖4(E)及圖4(F)分別相當於圖3(A)所示的A切剖圖、B切剖圖、C切剖圖、D切剖圖、E切剖圖及F切剖圖,構成閥體的分割體端面或箱體平面部的說明圖。 Figure 3 shows an enlarged view and a partial cross-sectional view of the switching valve mechanism shown in Figure 1 . In more detail, Fig. 3(A) is an enlarged view corresponding to the switching valve mechanism shown in Fig. 1, and Fig. 3(B) is equivalent to the part other than the valve body shown in Fig. 3(A), viewed from parallel to the xz plane And it is a partial sectional view cut on a plane including the central axis AX of the valve body. Again, shown in Fig. 4 is the sectional view of switching valve mechanism shown in Fig. 3, Fig. 4 (A), Fig. 4 (B), Fig. 4 (C), Fig. 4 (D), Fig. 4 (E) and Fig. 4 ( F) Respectively correspond to the A cut-away diagram, B cut-away diagram, C cut-away diagram, D cut-away diagram, E cut-away diagram and F cut-away diagram shown in Figure 3 (A), constituting the end surface of the split body of the valve body Or an explanatory diagram of the flat surface of the cabinet.

切換閥機構4係具備有:可圍繞中心軸AX旋轉的閥體31、可旋轉地收容閥體31的箱體32、供將閥體31安裝於箱體32用的安裝構件33、夾置於安裝構件33與閥體31之間的間隔物34、以使閥體31旋轉的 馬達35。箱體32係具備有:注入從混合閥機構3所吐出之樹脂的第1注入口43a、注入從第3擠出機2c所擠出之第3樹脂的第2注入口43b、供將樹脂供應給模具1用的樹脂供應口44、供將混合樹脂排出(廢棄)至外部用的第1排出口45a、以及供將第3樹脂排出(廢棄)至外部用的第2排出口45b。又,第1排出口45a係圖2所示流路63a下游側的端部,第2排出口45b係圖2所示流路63b下游側的端部。 The switching valve mechanism 4 is provided with: a valve body 31 rotatable around the central axis AX, a casing 32 for accommodating the valve body 31 rotatably, a mounting member 33 for mounting the valve body 31 on the casing 32 , and an interposed The spacer 34 between the installation member 33 and the valve body 31, so that the valve body 31 rotates motor 35. The box body 32 is equipped with: a first injection port 43a for injecting the resin discharged from the mixing valve mechanism 3, a second injection port 43b for injecting the third resin extruded from the third extruder 2c, and a supply of the resin. A resin supply port 44 for the mold 1, a first discharge port 45a for discharging (discarding) the mixed resin to the outside, and a second discharge port 45b for discharging (disposing) the third resin to the outside. Also, the first discharge port 45a is a downstream end of the flow path 63a shown in FIG. 2 , and the second discharge port 45b is a downstream end of the flow path 63b shown in FIG. 2 .

切換閥機構4係配合閥體31的旋轉位置,可將第1注入口43a與第2注入口43b中之任一者連接於樹脂供應口44。更詳言之,切換閥機構4係若第1注入口43a與樹脂供應口44相連通的第1狀態,便可使狀態在第2注入口43b與樹脂供應口44相連通的第2狀態間遷移。在第1狀態中係第2注入口43b與第2排出口45b相連通。又,在第2狀態中係第1注入口43a與第1排出口45a相連通。切換閥機構4係藉由切換第1狀態與第2狀態,便可將從混合閥機構3所擠出之樹脂、與從第3擠出機2c所擠出之第3樹脂中之任一者供應給模具1。 The switching valve mechanism 4 can connect either one of the first injection port 43 a and the second injection port 43 b to the resin supply port 44 in accordance with the rotational position of the valve body 31 . More specifically, if the switching valve mechanism 4 is in the first state in which the first injection port 43a communicates with the resin supply port 44, the state can be switched between the second state in which the second injection port 43b communicates with the resin supply port 44. migrate. In the first state, the second injection port 43b communicates with the second discharge port 45b. Moreover, in the second state, the first injection port 43a communicates with the first discharge port 45a. The switching valve mechanism 4 can switch between the resin extruded from the mixing valve mechanism 3 and the third resin extruded from the third extruder 2c by switching the first state and the second state. Supply to mold 1.

本實施形態中,閥體31係如圖3所示,由:第1分割體37、第2分割體38、及第3分割體39等3個構件構成。 In this embodiment, as shown in FIG. 3 , the valve body 31 is composed of three members: a first split body 37 , a second split body 38 , and a third split body 39 .

第1分割體37係具有與閥體31中心軸AX正交的一對端面40a與40b之圓柱形狀構件。如圖4(B)與圖4(C)所示,在第1分割體37中於閥體31中心軸的偏心位置處,分別設有朝平行於中心軸延伸之具圓形截面的4個貫通孔47a、47b、49a及49b。藉此,在圖4(C)所示端面40a上,形成:屬於貫通孔47a端部的開口部54a、屬於貫通孔47b端部的開口部54b、屬於貫通孔49a端部的開口部55a、以及屬於貫通孔49b端部的開口部55b。又,如圖4(C)所示,在第1分割體37的x軸負方向端面40b,形成連接貫通孔47a與47b的溝48。 The first split body 37 is a cylindrical member having a pair of end faces 40 a and 40 b perpendicular to the central axis AX of the valve body 31 . As shown in Figure 4(B) and Figure 4(C), in the first split body 37 at the eccentric position of the central axis of the valve body 31, there are respectively four valves with a circular cross-section extending parallel to the central axis. The through holes 47a, 47b, 49a, and 49b. Thereby, on the end surface 40a shown in FIG. And the opening part 55b which belongs to the end part of the through-hole 49b. Further, as shown in FIG. 4(C), a groove 48 connecting the through holes 47a and 47b is formed on the end surface 40b in the negative x-axis direction of the first divided body 37 .

第2分割體38係具有與閥體31中心軸AX正交的一對端面41a與41b,且直徑等於第1分割體37的圓柱形狀構件。如圖4(D)與圖4(E)所示,在第2分割體38中於閥體31中心軸AX的偏心位置處,設有朝平行於中心軸延伸之具圓形截面的2個貫通孔50a與50b。貫通孔50a與50b的各自直徑係與貫通孔49a與49b的各自直徑相等。又,貫通孔50a與50b分別係當使第2分割體38的端面41a(圖4(E))、與第1分割體37的端面40b(圖4(B))一致抵接於中心軸時,形成於與貫通孔49a、49b呈同軸的位置處。 The second split body 38 is a cylindrical member having a pair of end faces 41 a and 41 b perpendicular to the central axis AX of the valve body 31 and having a diameter equal to that of the first split body 37 . As shown in Figure 4(D) and Figure 4(E), in the second split body 38 at the eccentric position of the central axis AX of the valve body 31, there are two circular cross-sections extending parallel to the central axis. Through holes 50a and 50b. The respective diameters of the through holes 50a and 50b are equal to the respective diameters of the through holes 49a and 49b. Moreover, when the through holes 50a and 50b respectively make the end face 41a of the second split body 38 (FIG. 4(E)) and the end face 40b of the first split body 37 (FIG. 4(B)) abut on the central axis, , formed at positions coaxial with the through-holes 49a, 49b.

第3分割體39係具有與閥體31中心軸AX正交的端面42,且具有直徑等於第1分割體37與第2分割體38的圓柱形狀部分之構件。如圖4(F)所示,在第3分割體39中形成溝51。溝51的端部52a與52b分別係當第3分割體39的端面42(圖4(F))與第2分割體38的端面41b(圖4(D))一致抵接於中心軸時,分別形成於重疊貫通孔50a與50b的位置處。 The third split body 39 is a member having an end face 42 perpendicular to the central axis AX of the valve body 31 and having a cylindrical portion having a diameter equal to that of the first split body 37 and the second split body 38 . As shown in FIG. 4(F) , a groove 51 is formed in the third divided body 39 . The end portions 52a and 52b of the groove 51 are respectively when the end face 42 (FIG. 4(F)) of the third split body 39 and the end face 41b (FIG. 4(D)) of the second split body 38 abut on the central axis in unison, are respectively formed at positions where the through-holes 50a and 50b overlap.

第1分割體37、第2分割體38及第3分割體39係使用朝中心軸平行方向延伸的螺栓等固定構件形成一體化。若第1分割體37、第2分割體38及第3分割體39呈一體化之狀態,如上述般,第1分割體37的貫通孔49a與49b分別與第2分割體38的貫通孔50a及50b同軸,且第2分割體38的貫通孔50a與50b分別被定位成與第3分割體39的溝51之端部52a及52b重疊之狀態。又,當第1分割體37、第2分割體38及第3分割體39利用螺栓固定的情況時,螺栓係安裝於未形成貫通孔或溝的部分處。若上述第1分割體37、第2分割體38及第3分割體39呈一體化構成閥體31,便在閥體31的內部形成:連接於端面40a上的開口部54a與54b之第1流路、與連接端面40a上的開口部55a與55b之第2流路。第1流路係依照開口部54a、貫通孔47a、溝48、貫通孔47b及開口部54a之順序流通的流路。第 1流路係為使從箱體32中所設置之第1注入口43a所供應的樹脂流動用之流路。開口部54a(第6開口部)係相當於第1流路上游側的端部,開口部54b(第1開口部)係相當於第1流路下游側的端部。第2流路係依照開口部55a、貫通孔49a、貫通孔50a、溝51、貫通孔50b、貫通孔49b、開口部55b之順序流通的流路。第2流路係為使從箱體32中所設置之第2注入口43b所供應的第3樹脂流動用之流路。開口部55a(第7開口部)係相當於第2流路上游側的端部,開口部55b(第2開口部)係相當於第2流路下游側的端部。 The first divided body 37, the second divided body 38, and the third divided body 39 are integrally formed using fixing members such as bolts extending in a direction parallel to the central axis. If the first split body 37, the second split body 38, and the third split body 39 are integrated, as described above, the through holes 49a and 49b of the first split body 37 are connected to the through holes 50a of the second split body 38 respectively. and 50b are coaxial, and the through-holes 50a and 50b of the second split body 38 are positioned so as to overlap the ends 52a and 52b of the groove 51 of the third split body 39, respectively. Also, when the first divided body 37 , the second divided body 38 , and the third divided body 39 are fixed by bolts, the bolts are attached to portions where no through holes or grooves are formed. If the first split body 37, the second split body 38 and the third split body 39 are integrated to form the valve body 31, they will be formed inside the valve body 31: the first split of the openings 54a and 54b connected to the end surface 40a. The flow path and the second flow path connecting the openings 55a and 55b on the end surface 40a. The first flow path is a flow path in which the opening 54a, the through-hole 47a, the groove 48, the through-hole 47b, and the opening 54a flow in this order. No. The first flow path is a flow path for flowing the resin supplied from the first injection port 43a provided in the tank 32. The opening 54a (sixth opening) corresponds to an end on the upstream side of the first flow path, and the opening 54b (first opening) corresponds to an end on the downstream side of the first flow path. The second flow path is a flow path that flows in the order of the opening 55a, the through hole 49a, the through hole 50a, the groove 51, the through hole 50b, the through hole 49b, and the opening 55b. The second flow path is a flow path for flowing the third resin supplied from the second injection port 43 b provided in the tank 32 . The opening 55a (seventh opening) corresponds to an end on the upstream side of the second flow path, and the opening 55b (second opening) corresponds to an end on the downstream side of the second flow path.

箱體32係具有內徑略等於第1分割體37之外徑的圓柱狀中空部,在該中空部收容著由第1分割體37、第2分割體38、及第3分割體39之其中一部分所構成的同徑圓柱部分。又,箱體32係具有與閥體31正交的中心軸AX,且抵接於閥體31端面40a的平面部57。閥體31係在被收容於箱體32的中空部狀態下,可使閥體31的外周面與端面40a,分別與箱體32中空部的內周面及平面部57之一邊滑動一邊旋轉。 Casing body 32 is to have the cylindrical hollow part that internal diameter is roughly equal to the outer diameter of the 1st split body 37, in this hollow part accommodates by the 1st split body 37, the 2nd split body 38 and the 3rd split body 39. Part of the cylindrical part of the same diameter. Furthermore, the case body 32 has a central axis AX perpendicular to the valve body 31 and is in contact with the flat surface portion 57 of the end surface 40 a of the valve body 31 . When the valve body 31 is accommodated in the hollow portion of the case 32, the outer peripheral surface and the end surface 40a of the valve body 31 can slide and rotate with one of the inner peripheral surface and the flat surface 57 of the hollow portion of the case 32, respectively.

如圖3與圖4(A)所示,在箱體32中形成連通於第1注入口43a的流路58a、連通於第2注入口43b的流路58b、連通於樹脂供應口44的流路62、連通於第1排出口45a的流路63a、以及連通於第2排出口45b的流路63b。在箱體32的平面部57上,如圖4(A)所示,形成:連接於流路58a的溝59a(第8開口部)、連接於流路58b的溝59b(第9開口部)、流路62上游側之端部的開口部64(第3開口部)、流路63a上游側之端部的開口部65a(第4開口部)、以及流路63b上游側之端部的開口部65b(第5開口部)。又,溝59a相當於連通第1注入口43a的開口部,溝59b相當於連通第2注入口43b的開口部。從第1注入口43a經由流路58a到達溝59a的流路,係從混合閥機構3所擠出之樹脂的供應流路。從第2注入口43b經由流路58b到達溝59b的流路,係從第3擠出機2c所擠出之第3樹脂的供應 流路。又,從開口部64經由流路62到達樹脂供應口44的流路,係用以將從混合閥機構3所擠出之樹脂、或從第3擠出機2c所擠出之第3樹脂,供應給模具1用的流路。從開口部65a經由流路63a到達第1排出口45a的流路,係用以將從混合閥機構3所擠出之樹脂廢棄用的流路。從開口部65b經由流路63b到達第2排出口45b的流路,係用以將從混合閥機構3所擠出之樹脂廢棄用的流路。 As shown in FIG. 3 and FIG. 4(A), a flow path 58a connected to the first injection port 43a, a flow path 58b connected to the second injection port 43b, and a flow path connected to the resin supply port 44 are formed in the case 32. The passage 62, the flow passage 63a connected to the first discharge port 45a, and the flow passage 63b connected to the second discharge port 45b. On the flat surface portion 57 of the case 32, as shown in FIG. , the opening 64 (third opening) at the upstream end of the flow path 62, the opening 65a (fourth opening) at the upstream end of the flow path 63a, and the opening at the upstream end of the flow path 63b part 65b (fifth opening part). Moreover, the groove 59a corresponds to the opening part which communicates with the 1st injection port 43a, and the groove 59b corresponds to the opening part which communicates with the 2nd injection port 43b. The flow path from the first injection port 43a to the groove 59a via the flow path 58a is a supply flow path for the resin extruded from the mixing valve mechanism 3 . The flow path from the second injection port 43b to the groove 59b through the flow path 58b is the supply of the third resin extruded from the third extruder 2c flow path. In addition, the flow path from the opening 64 to the resin supply port 44 through the flow path 62 is used for extruding the resin extruded from the mixing valve mechanism 3 or the third resin extruded from the third extruder 2c, This is the flow path for mold 1. The flow path from the opening 65 a to the first discharge port 45 a through the flow path 63 a is a flow path for discarding the resin extruded from the mixing valve mechanism 3 . The flow path from the opening 65b to the second discharge port 45b via the flow path 63b is a flow path for discarding the resin extruded from the mixing valve mechanism 3 .

在箱體32的中空部部分中收容著閥體31之圓柱狀部分的狀態下,藉由安裝構件33密封箱體32的開口部,而將閥體31安裝於箱體32上。安裝構件33係例如可使用未圖示之螺栓固鎖於箱體32上。在閥體31與安裝構件33之間,例如夾入由金屬構成的圓環狀間隔物34。間隔物34的厚度係依間隔物34的外表面位於較箱體32之開放端的端面更靠外邊的方式,設定為在插入閥體31之狀態下,較中空部內所形成之空間大的深度。所以,藉由在與閥體31之間夾入間隔物34並將安裝構件33固定於箱體32上,便可將閥體31的端面40a依既定的接觸壓力按壓於箱體32的平面部57。即,本實施形態中,安裝構件33與間隔物34係具有將閥體31的端面40a壓制於箱體32的平面部57上之按壓構件機能。藉由對閥體31施加朝箱體32之平面部57側按押壓力,便可規範閥體31在中心軸方向的移動,且提升閥體31的端面40a對箱體32的平面部57之密接力,便可抑制接觸面的樹脂滲出等。又,閥體31的端面40a之接觸壓力係例如利用將安裝構件33固定於箱體32上的螺栓之鎖緊力矩便可管理。當閥體31的端面40a或箱體32的平面部57有遭磨損的情況,藉由將間隔物34更換為更厚之物、或者調整將安裝構件33固定於箱體32上的螺栓之鎖緊力矩,便可將閥體31的接觸壓力維持為一定。即,本實施形態的切換閥機構4係構成為閥體31與箱體32間的樹脂進出係經由中心軸的正交界面(端面40a與平面部57)實施,因而可更加提升保養性。 With the cylindrical portion of the valve body 31 accommodated in the hollow portion of the case body 32 , the opening of the case body 32 is sealed by the mounting member 33 , and the valve body 31 is attached to the case body 32 . The installation member 33 can be fixed on the box body 32 by using bolts not shown, for example. Between the valve body 31 and the mounting member 33 , for example, an annular spacer 34 made of metal is interposed. The thickness of the spacer 34 is based on the way that the outer surface of the spacer 34 is located more outside than the end face of the open end of the box body 32, and is set to a greater depth than the space formed in the hollow portion when the valve body 31 is inserted. Therefore, by sandwiching the spacer 34 between the valve body 31 and fixing the mounting member 33 on the case body 32, the end surface 40a of the valve body 31 can be pressed against the flat surface of the case body 32 with a predetermined contact pressure. 57. That is, in this embodiment, the mounting member 33 and the spacer 34 function as pressing members for pressing the end surface 40 a of the valve body 31 against the flat surface portion 57 of the case 32 . By applying pressure to the valve body 31 toward the flat surface portion 57 of the box body 32, the movement of the valve body 31 in the direction of the central axis can be regulated, and the distance between the end surface 40a of the valve body 31 and the flat surface portion 57 of the box body 32 can be adjusted. Adhesive force can be suppressed, such as resin bleeding on the contact surface. In addition, the contact pressure of the end surface 40 a of the valve body 31 can be managed by using, for example, the tightening torque of the bolts that fix the mounting member 33 to the case body 32 . When the end surface 40a of the valve body 31 or the flat portion 57 of the box body 32 is worn, the spacer 34 can be replaced with a thicker one, or the lock of the bolt fixing the mounting member 33 on the box body 32 can be adjusted. By tightening the torque, the contact pressure of the valve body 31 can be kept constant. That is, the switching valve mechanism 4 of the present embodiment is configured such that the resin in and out between the valve body 31 and the case 32 is implemented through the orthogonal interface (end face 40a and flat portion 57 ) of the central axis, thereby further improving maintainability.

此處,針對閥體31相對於箱體32的旋轉位置之改變進行說明。 Here, the change of the rotational position of the valve body 31 relative to the case body 32 will be described.

圖5所示係圖3所示切換閥機構的動作之說明示意圖,圖5(A)~圖5(C)所示係閥體31與箱體32從圖3(A)所示之V方向觀看時,第1流路、與箱體32之平面部57的位置關係。圖5(D)~圖5(F)所示係閥體31與箱體32從圖3(A)所示V方向觀看時,第2流路、與箱體32之平面部57的位置關係。圖5中,為求圖示簡單化,與閥體31相關的部分以粗實線標示,與箱體32相關的部分以普通實線標示。與箱體32相關的部分以位於紙面的深度位置。又,為求圖示簡單化,圖5係以在閥體31之端面40a與箱體32之平面部57所形成的開口部(依小圓圈標示)、在閥體31上所設置的溝48與51、以及在箱體32上所設置的溝59a與59b為中心圖示。圖4所說明的貫通孔係重疊在於閥體31的端面40a所形成之開口部中之任一者,因而省略圖示,僅在開口部的元件符號下方,於括號內標記所對應貫通孔的元件符號。 Figure 5 is a schematic illustration of the action of the switching valve mechanism shown in Figure 3, Figure 5 (A) ~ Figure 5 (C) shows the valve body 31 and the box 32 from the V direction shown in Figure 3 (A) The positional relationship between the first flow path and the planar portion 57 of the case 32 when viewed. Figures 5(D) to 5(F) show the positional relationship between the second flow path and the flat surface portion 57 of the box body 32 when the valve body 31 and the box body 32 are viewed from the V direction shown in Figure 3(A). . In FIG. 5 , for simplicity of illustration, the parts related to the valve body 31 are marked with thick solid lines, and the parts related to the box body 32 are marked with ordinary solid lines. Parts related to the box body 32 are located at the depth of the paper. Also, for simplicity of illustration, FIG. 5 is based on the opening (indicated by a small circle) formed on the end surface 40a of the valve body 31 and the flat surface portion 57 of the box body 32, and the groove 48 provided on the valve body 31. 51 and the grooves 59a and 59b provided on the box body 32 are shown in the center. The through-holes illustrated in FIG. 4 overlap any one of the openings formed by the end surface 40a of the valve body 31, so the illustration is omitted, and the corresponding through-holes are marked in parentheses only below the element numbers of the openings. Component symbol.

圖5(A)與圖5(D)所示係閥體31位於第1旋轉位置的狀態(相當於上述第1狀態)。當閥體31位於第1旋轉位置時,如圖5(A)所示,第1流路上游側之端部的開口部54a重疊於箱體32中所設置的溝59a(流路58a),而第1流路下游側之端部的開口部54b則重疊於樹脂供應口44所連接流路62端部的開口部64。藉此,第1注入口43a所連接的流路58a、與樹脂供應口44所連接的流路62,係利用閥體31內的第1流路(貫通孔47a、溝48及貫通孔47b)相連接。此時,第1流路下游側之端部的開口部54b並未重疊於第1排出口45a所連接之流路63a之端部的開口部65a、與第2排出口45b所連接之流路63b之端部的開口部65b。 FIG. 5(A) and FIG. 5(D) show the state where the valve body 31 is located at the first rotational position (corresponding to the above-mentioned first state). When the valve body 31 is located at the first rotational position, as shown in FIG. The opening 54 b at the end of the downstream side of the first flow path overlaps with the opening 64 at the end of the flow path 62 to which the resin supply port 44 is connected. Thereby, the flow path 58a connected to the first injection port 43a and the flow path 62 connected to the resin supply port 44 use the first flow path (the through hole 47a, the groove 48 and the through hole 47b) inside the valve body 31. connected. At this time, the opening 54b at the end of the downstream side of the first flow path does not overlap the opening 65a at the end of the flow path 63a connected to the first discharge port 45a and the flow path connected to the second discharge port 45b. The opening 65b at the end of 63b.

再者,當閥體31位於第1旋轉位置時,如圖5(D)所示,第2流路上游側之端部的開口部55a係重疊於箱體32中所設置的溝59b,而第2流路下游側之端部的開口部55b則重疊於第2排出口45b所連接流路63b之端部的開口部65b。藉此,第2注入口43b所連接的流路58b、與第2排出口45b所連接的流路63b,係經由閥體31內的第2流路(貫通孔49a、貫通孔50a、溝51、貫通孔50a、貫通孔49b)相連接。此時,第2流路下游側之端部的開口部55b並未重疊於樹脂供應口44所連接流路62之端部的開口部64。 Furthermore, when the valve body 31 was at the first rotational position, as shown in FIG. 5(D), the opening 55a at the end of the upstream side of the second flow path overlapped the groove 59b provided in the box body 32, and The opening 55b at the downstream end of the second flow path overlaps with the opening 65b at the end of the flow path 63b to which the second discharge port 45b is connected. Thereby, the flow path 58b connected to the second injection port 43b and the flow path 63b connected to the second discharge port 45b pass through the second flow path (through hole 49a, through hole 50a, groove 51) in the valve body 31. , the through hole 50a, and the through hole 49b) are connected. At this time, the opening 55b at the end of the downstream side of the second flow path does not overlap the opening 64 at the end of the flow path 62 to which the resin supply port 44 is connected.

所以,在閥體31位於第1旋轉位置的第1狀態下,從第1注入口43a所供應的樹脂全部在閥體31內的第1流路中流動,再通過樹脂供應口44供應給模具1。又,從第2注入口43b所供應的第3樹脂全部在閥體31內的第2流路中流動,再通過第2排出口45b被廢棄至外部。 Therefore, in the first state where the valve body 31 is located at the first rotation position, all the resin supplied from the first injection port 43a flows in the first flow path in the valve body 31, and is then supplied to the mold through the resin supply port 44. 1. Moreover, all the third resin supplied from the second injection port 43b flows through the second flow path in the valve body 31, and is then discarded to the outside through the second discharge port 45b.

圖5(B)與圖5(E)所示係閥體31位於第1旋轉位置與第2旋轉位置之中間位置狀態(從上述第1狀態遷移至第2狀態的中途狀態)。若閥體31從上述第1旋轉位置旋轉至第2旋轉位置,則第1流路與第2流路分別從圖5(A)與圖5(C)所示位置經由圖5(B)與圖5(E)所示之中間位置,移動至圖5(C)與圖5(F)所示之位置。又,第1流路上游側之端部的開口部54a係在閥體31位於第1旋轉位置、或第2旋轉位置、或第1旋轉位置與第2旋轉位置間之位置的期間,重疊於箱體32的溝59a,使第1流路連接至第1注入口43a。同樣,第2流路上游側之端部的開口部55a係在閥體31位於第1旋轉位置、或第2旋轉位置、或第1旋轉位置與第2旋轉位置間之位置的期間,重疊於箱體32的溝59b,使第2流路連接於第2注入口43b。 5(B) and 5(E) show that the valve body 31 is located in the intermediate position between the first rotational position and the second rotational position (the halfway state from the first state to the second state). If the valve body 31 rotates from the above-mentioned first rotation position to the second rotation position, the first flow path and the second flow path pass through the positions shown in FIG. 5(A) and FIG. 5(C) respectively through FIG. The intermediate position shown in Figure 5(E) moves to the position shown in Figure 5(C) and Figure 5(F). Also, the opening 54a at the end of the upstream side of the first flow path overlaps with the valve body 31 when the valve body 31 is located at the first rotational position, or the second rotational position, or a position between the first rotational position and the second rotational position. The groove 59a of the case 32 connects the first flow path to the first injection port 43a. Similarly, the opening 55a at the end of the upstream side of the second flow path overlaps with the valve body 31 when the valve body 31 is at the first rotational position, or the second rotational position, or a position between the first rotational position and the second rotational position. The groove 59b of the case 32 connects the second flow path to the second injection port 43b.

圖5(C)與圖5(F)所示係閥體31位於第2旋轉位置的狀態(相當於上述第2狀態)。當閥體31位於第2旋轉位置時,如圖5(C)所示, 第1流路上游側之端部的開口部54a重疊於箱體32中所設置的溝59a,而第1流路下游側之端部的開口部54b則重疊於第1排出口45a所連接之流路63a之端部的開口部65a。藉此,第1注入口43a所連接的流路58a、與第1排出口45a所連接的流路63a,便利用閥體31內的第1流路(貫通孔47a、溝48及貫通孔47b)相連接。此時,第1流路下游側之端部的開口部54b並未重疊於樹脂供應口44所連接之流路62之端部的開口部64。 FIG. 5(C) and FIG. 5(F) show the state where the valve body 31 is located at the second rotational position (corresponding to the above-mentioned second state). When the valve body 31 is at the second rotational position, as shown in FIG. 5(C), The opening 54a at the end of the upstream side of the first flow path overlaps the groove 59a provided in the case 32, and the opening 54b at the end of the downstream side of the first flow path overlaps with the opening 59a connected to the first discharge port 45a. The opening 65a at the end of the flow path 63a. Thereby, the flow path 58a connected to the first injection port 43a and the flow path 63a connected to the first discharge port 45a use the first flow path (the through hole 47a, the groove 48 and the through hole 47b) in the valve body 31. ) are connected. At this time, the opening 54b at the end of the downstream side of the first flow path does not overlap the opening 64 at the end of the flow path 62 to which the resin supply port 44 is connected.

再者,當閥體31位於第1旋轉位置時,如圖5(F)所示,第2流路上游側之端部的開口部55a重疊於箱體32中所設置的溝59b(流路58b),而第2流路下游側之端部的開口部55b則重疊於樹脂供應口44所連接之流路62之端部的開口部64。藉此,第2注入口43b所連接的流路58b、與樹脂供應口44所連接的流路62,利用閥體31內的第2流路(貫通孔49a、貫通孔50a、溝51、貫通孔50a、貫通孔49b)相連接。此時,第2流路下游側之端部的開口部55b並未重疊於第1排出口45a所連接之流路63a之端部的開口部65a、與第2排出口45b所連接之流路63b之端部的開口部65b。 Furthermore, when the valve body 31 is located at the first rotational position, as shown in FIG. 58b), and the opening 55b at the end of the downstream side of the second flow path overlaps with the opening 64 at the end of the flow path 62 to which the resin supply port 44 is connected. Thereby, the flow path 58b connected to the second injection port 43b and the flow path 62 connected to the resin supply port 44 utilize the second flow path (through hole 49a, through hole 50a, groove 51, through hole 49a, through hole 50a, groove 51, etc.) The hole 50a and the through hole 49b) are connected. At this time, the opening 55b at the end of the downstream side of the second flow path does not overlap the opening 65a at the end of the flow path 63a connected to the first discharge port 45a and the flow path connected to the second discharge port 45b. The opening 65b at the end of 63b.

所以,在閥體31位於第2旋轉位置的第1狀態時,從第1注入口43a所供應之樹脂全部在閥體31內的第1流路中流動,再通過第1排出口45a被廢棄於外部。又,從第2注入口43b所供應之第3樹脂全部在閥體31內的第2流路中流動,再通過樹脂供應口44供應給模具1。 Therefore, when the valve body 31 is in the first state of the second rotation position, all the resin supplied from the first injection port 43a flows in the first flow path in the valve body 31 and is discarded through the first discharge port 45a. on the outside. Furthermore, all the third resin supplied from the second injection port 43 b flows through the second flow path in the valve body 31 and is supplied to the mold 1 through the resin supply port 44 .

圖6所示係利用控制裝置進行的控制方法說明圖。更詳言之,圖6(A)所示係可依本實施形態軟管製造裝置100進行製造的軟管一例之示意圖。又,圖6(B)~圖6(D)所示係為製造圖6(A)所示之軟管,而由控制裝置所施行控制的時序圖,上述時序圖為表示從切換閥機構4供 應給模具1的樹脂中所含第1樹脂、第2樹脂及第3樹脂之各自比率之改變的時序圖。 Fig. 6 is an explanatory diagram of a control method performed by the control device. More specifically, FIG. 6(A) is a schematic diagram of an example of a hose that can be manufactured by the hose manufacturing device 100 of this embodiment. 6(B) to 6(D) show the time sequence diagrams for the manufacture of the hose shown in FIG. 6(A) and the control performed by the control device. for A timing chart of changes in the respective ratios of the first resin, the second resin, and the third resin contained in the resin of the mold 1 should be given.

圖6(A)所示軟管70係利用由樹脂層所構成之外層細管,被覆著在內層細管之外表面所設置之編包管(網管)的編包線6上,包括有:外層細管的樹脂硬度逐漸變柔軟的硬度遷移部71、與連接於硬度遷移部71前端且由硬度較覆蓋硬度遷移部71前端的樹脂更柔軟的樹脂所構成之軟尖端72。軟尖端72的長度係例如數mm~數cm,構成軟尖端72的樹脂層(外層細管)硬度係一定。 The hose 70 shown in Fig. 6 (A) utilizes the outer thin tube formed by the resin layer, and is covered on the braided wire 6 of the braided tube (network pipe) provided on the outer surface of the inner thin tube, including: the outer thin tube The hardness transition part 71 whose resin hardness gradually becomes softer, and the soft tip 72 connected to the front end of the hardness transition part 71 and made of softer resin than the resin covering the front end of the hardness transition part 71 . The length of the soft tip 72 is, for example, several millimeters to several centimeters, and the hardness of the resin layer (outer thin tube) constituting the soft tip 72 is constant.

製造軟管70時,首先使用第1樹脂、與較第1樹脂更柔軟的第2樹脂,在混合閥機構3中一邊增加第2樹脂的混合比率,一邊在編包線6上擠出成形硬度遷移部71。其次,在切換閥機構4中,藉由將供應給模具1的樹脂,切換為較第2樹脂更柔軟的第3樹脂,再於編包線6上連續於硬度遷移部71擠出成形軟尖端72。 When manufacturing the hose 70, the first resin and the second resin that is softer than the first resin are first used, and the mixing ratio of the second resin is increased in the mixing valve mechanism 3, and the hardness is extruded on the braided wire 6. Migration Section 71. Next, in the switching valve mechanism 4, the resin supplied to the mold 1 is switched to a third resin that is softer than the second resin, and then the soft tip is continuously extruded on the braided wire 6 at the hardness transfer portion 71 72.

參照圖6(B)~圖6(D)說明具體例。在擠出成形時,由對應從構成混合閥機構3的第1閥18a與第2閥18b之樹脂供應點起至模具1之擠出口14的流路體積,以及從構成切換閥機構4的箱體32之平面部57起至模具1之擠出口14的流路體積,對混合閥機構3或切換閥機構4進行控制之後起,至從擠出口14所擠出之樹脂的構成有出現改變為止會產生之時間差。所以,實際上考慮因流路體積造成的時滯,調整混合閥機構3與切換閥機構4的控制時序,使從擠出口14所擠出之樹脂的構成能依所需時序產生改變。然而,以下說明中,為求說明簡單化,在混合閥機構3中使混合比改變的時刻、與在切換閥機構4中切換對模具1供應樹脂的時刻、以及使從模具1所擠出之樹脂的構成改變之時刻,係以相同時間軸表示。 A specific example will be described with reference to FIGS. 6(B) to 6(D). During extrusion molding, the flow path volume from the resin supply point of the first valve 18a and the second valve 18b constituting the mixing valve mechanism 3 to the extrusion port 14 of the mold 1 and from the tank constituting the switching valve mechanism 4 From the flat part 57 of the body 32 to the flow path volume of the extrusion port 14 of the mold 1, after the mixing valve mechanism 3 or the switching valve mechanism 4 is controlled, until the composition of the resin extruded from the extrusion port 14 changes. There will be a time difference. Therefore, considering the time lag caused by the volume of the flow path, the control timing of the mixing valve mechanism 3 and the switching valve mechanism 4 is adjusted so that the composition of the resin extruded from the extrusion port 14 can be changed according to the required timing. However, in the following description, in order to simplify the description, the timing of changing the mixing ratio in the mixing valve mechanism 3, the timing of switching the supply of resin to the mold 1 in the switching valve mechanism 4, and the timing of switching the resin extruded from the mold 1 The timing at which the composition of the resin changes is represented by the same time axis.

在開始成形時的時刻t0,控制裝置5係依閥體31配置於第1旋轉位置的方式控制著切換閥機構4。在此狀態下,控制裝置5係依供應給切換閥機構4的樹脂中,第1樹脂比率成為100%、第2樹脂比率成為0%的方式,對構成混合閥機構3的第1閥18a與第2閥18b之閥體23之旋轉位置進行控制。藉此,在對混合閥機構3與切換閥機構4進行控制之狀態下,藉由朝編包線6擠出樹脂,便從時刻t0起至t1,形成第1樹脂比率100%的外層細管。 At time t0 when molding is started, the control device 5 controls the switching valve mechanism 4 so that the valve body 31 is disposed at the first rotational position. In this state, the control device 5 controls the first valve 18a and the first valve 18a constituting the mixing valve mechanism 3 so that the ratio of the first resin becomes 100% and the ratio of the second resin becomes 0% in the resin supplied to the switching valve mechanism 4. The rotational position of the valve body 23 of the second valve 18b is controlled. Thereby, by extruding the resin toward the braided wire 6 under the control of the mixing valve mechanism 3 and the switching valve mechanism 4, from time t0 to t1, the outer thin tube with the first resin ratio of 100% is formed.

在時刻t1~t2之間,控制裝置5係依逐漸減少供應給混合部的第1樹脂比率,且將供應給混合部的第2樹脂比率逐漸增加至既定值(本實施形態為100%)的方式,對構成混合閥機構3的第1閥18a與第2閥18b之閥體23的旋轉位置進行控制。此時,控制裝置5係將供應給混合部的第1樹脂與第2樹脂之總量控制為一定。又,直到時刻t2為止前,控制裝置5均將切換閥機構4的閥體31維持於第1旋轉位置。依此,在對混合閥機構3與切換閥機構4進行控制之狀態下,藉由朝編包線6擠出樹脂,便從時刻t1起至t2,成形第2樹脂比率從0%逐漸增加至100%的外層細管。 Between time t1 and t2, the control device 5 gradually reduces the ratio of the first resin supplied to the mixing section, and gradually increases the ratio of the second resin supplied to the mixing section to a predetermined value (100% in this embodiment) In this manner, the rotational positions of the valve bodies 23 of the first valve 18a and the second valve 18b constituting the mixing valve mechanism 3 are controlled. At this time, the control device 5 controls the total amount of the first resin and the second resin supplied to the mixing unit to be constant. Moreover, the control device 5 maintains the valve body 31 of the switching valve mechanism 4 at the first rotational position until time t2. Accordingly, in the state where the mixing valve mechanism 3 and the switching valve mechanism 4 are controlled, by extruding the resin toward the braided wire 6, the molding second resin ratio gradually increases from 0% to t2 from time t1 to t2. 100% outer capillary.

時刻t2中,控制裝置5係依閥體31配置於第2旋轉位置的方式,對切換閥機構4進行控制。藉由該切換閥機構4的控制,供應給模具1的樹脂便由從混合閥機構3擠出的樹脂,切換為從第3擠出機2c擠出的第3樹脂,且自時刻t2以後,成形第3樹脂比率為100%的外層細管(軟尖端72)。 At time t2, the control device 5 controls the switching valve mechanism 4 so that the valve body 31 is arranged at the second rotational position. By the control of the switching valve mechanism 4, the resin supplied to the mold 1 is switched from the resin extruded from the mixing valve mechanism 3 to the third resin extruded from the third extruder 2c, and after time t2, The outer thin tube (soft tip 72) whose third resin ratio is 100% is molded.

再者,圖6的說明中,針對於硬度遷移部71設置僅由第1樹脂被覆之部分的例子進行說明,惟,開始擠出成形時的第1樹脂比率係可為任意。又,圖6的說明中,針對硬度遷移部71之擠出成形時,使第2 樹脂比率從0%改變至100%的例子進行說明,惟,第2樹脂的比率之上限值係可為任意。 Furthermore, in the description of FIG. 6 , an example in which the hardness transfer portion 71 is provided with only the first resin-coated portion is described, but the ratio of the first resin at the start of extrusion molding can be arbitrary. Also, in the description of FIG. 6 , when extruding the hardness transfer portion 71, the second An example in which the ratio of the resin is changed from 0% to 100% will be described, however, the upper limit of the ratio of the second resin may be arbitrary.

如以上所說明般,本實施形態的軟管製造裝置100係具備有:可將第1樹脂與第2樹脂一邊改變混合比一邊擠出的混合閥機構3;以及可將從混合閥機構3擠出的樹脂、及從第3擠出機2c擠出的最柔軟第3樹脂選擇性供應給模具1的切換閥機構4。在切換閥機構4選擇將從混合閥機構3擠出的樹脂作為供應給模具1的樹脂之狀態下,對混合閥機構3進行控制,藉由使較第1樹脂更柔軟的第2樹脂比率增加,便可擠出成形硬度沿長邊方向減少的硬度遷移部71。又,藉由依既定時序由切換閥機構4將供應給模具1的樹脂切換為第3樹脂,便可接續著硬度遷移部71而擠出成形柔軟的軟尖端72。因此,根據本實施形態的軟管製造裝置100,可連續地擠出成形硬度沿長度方向逐漸改變的硬度遷移部71與前端之軟尖端72。 As described above, the hose manufacturing apparatus 100 of the present embodiment includes: the mixing valve mechanism 3 capable of extruding the first resin and the second resin while changing the mixing ratio; The extruded resin and the softest third resin extruded from the third extruder 2c are selectively supplied to the switching valve mechanism 4 of the die 1 . In a state where the switching valve mechanism 4 selects the resin extruded from the mixing valve mechanism 3 as the resin supplied to the mold 1, the mixing valve mechanism 3 is controlled by increasing the ratio of the second resin that is softer than the first resin. , the hardness migration portion 71 whose hardness decreases along the longitudinal direction can be extruded. In addition, by switching the resin supplied to the mold 1 to the third resin by the switching valve mechanism 4 in accordance with a predetermined timing, the soft tip 72 can be extrusion-molded following the hardness transition portion 71 . Therefore, according to the hose manufacturing apparatus 100 of the present embodiment, the hardness transition portion 71 whose hardness gradually changes along the longitudinal direction and the soft tip 72 at the front end can be continuously extruded.

再者,本實施形態的切換閥機構4中,在將從混合閥機構3所擠出之樹脂供應給模具1的狀態下,第3樹脂會被廢棄至外部,在將第3樹脂供應給模具1的狀態下,從混合閥機構3所擠出之樹脂會被廢棄至外部。依此,藉由阻斷未被選擇成為供應給模具1的樹脂之樹脂流路,或者不用停止擠出該未被選擇之樹脂的擠出機而是將未被選擇的樹脂排出至外部,便可抑制在流路內滯留的樹脂之壓力變動。根據此構成,可抑制剛由切換閥機構4進行樹脂切換後的樹脂擠出量之變動,便可提升軟管的外徑之尺寸安定性。 Furthermore, in the switching valve mechanism 4 of this embodiment, in the state where the resin extruded from the mixing valve mechanism 3 is supplied to the mold 1, the third resin is discarded to the outside, and the third resin is supplied to the mold. In the state of 1, the resin extruded from the mixing valve mechanism 3 is discarded to the outside. According to this, by blocking the resin flow path that is not selected as the resin supplied to the die 1, or discharging the non-selected resin to the outside without stopping the extruder that extrudes the non-selected resin, The pressure fluctuation of the resin stagnant in the flow path can be suppressed. According to this configuration, it is possible to suppress fluctuations in the amount of resin extruded immediately after resin switching by the switching valve mechanism 4, and to improve the dimensional stability of the outer diameter of the hose.

再者,本實施形態的切換閥機構4中,閥體31係設有:供應從混合閥機構3所擠出之樹脂的第1流路、以及供應從第3擠出機2c所擠出之樹脂的第2流路,且配合閥體31的旋轉位置,將第1流路與第2流 路中之其中一者連接至模具1,並將另一者連接至排出口。根據此構成,因為閥體31內的流路並未由2種樹脂共用,因而可縮短從切換閥體31之旋轉位置起至模具1的擠出口14之樹脂構成出現改變為止的時間差,便可使樹脂的構成響應性地改變。又,因為閥體31內的流路並未由2種樹脂共用,因而亦可抑制在閥體31內出現2種樹脂混雜之情形。 Furthermore, in the switching valve mechanism 4 of the present embodiment, the valve body 31 is provided with: a first flow path for supplying the resin extruded from the mixing valve mechanism 3; The second flow path of the resin, and in accordance with the rotation position of the valve body 31, the first flow path and the second flow path One of the channels is connected to the mold 1 and the other is connected to the outlet. According to this configuration, since the flow path in the valve body 31 is not shared by the two types of resins, the time difference from switching the rotation position of the valve body 31 to the change of the resin composition at the extrusion port 14 of the mold 1 can be shortened. Responsively changes the composition of the resin. Also, since the flow path in the valve body 31 is not shared by the two types of resins, it is also possible to suppress the mixing of the two types of resins in the valve body 31 .

再者,本實施形態的切換閥機構4中,藉由使在閥體31之中心軸AX的正交之端面40a所設置之開口部54b與55b、及在端面40a所連接的箱體32之平面部57設置的開口部64、65a及65b中之任一者重疊,而執行閥體31中所設置之流路、與箱體32中所設置之流路的連接及連接之切換。又,藉由分別使在閥體之端面40a所設置的開口部54a與55b、以及在箱體32之平面部57所設置之溝59a與59b重疊,便可將箱體32中所設置的樹脂供應路、與在閥體31中所設置的流路相連接。在此種構成中,藉由使用間隔物34與安裝構件33,對閥體31的端面40a施加既定的接觸壓力,便可提升閥體31的端面40a與箱體32的平面部57間之密接性,俾能抑制樹脂滲出等。 Furthermore, in the switching valve mechanism 4 of the present embodiment, by making the openings 54b and 55b provided on the end surface 40a perpendicular to the central axis AX of the valve body 31, and the box body 32 connected to the end surface 40a Any one of the openings 64 , 65 a , and 65 b provided in the planar portion 57 overlaps to perform connection and switching of the flow path provided in the valve body 31 , and the flow path provided in the case 32 . Also, by overlapping the openings 54a and 55b provided on the end face 40a of the valve body and the grooves 59a and 59b provided on the flat surface 57 of the case 32, the resin provided in the case 32 can be The supply path is connected to a flow path provided in the valve body 31 . In this configuration, by applying a predetermined contact pressure to the end surface 40a of the valve body 31 by using the spacer 34 and the mounting member 33, the close contact between the end surface 40a of the valve body 31 and the flat surface portion 57 of the box body 32 can be improved. properties, so that it can inhibit resin exudation, etc.

但,切換閥機構4係在能將從混合閥機構3所擠出之樹脂、與從第3擠出機2c所擠出之樹脂中之任一者,選擇性供應給模具1之前提下,並不僅侷限於實施形態中的構成。 However, the switching valve mechanism 4 is under the premise that either the resin extruded from the mixing valve mechanism 3 or the resin extruded from the third extruder 2c can be selectively supplied to the die 1, It is not limited to the configuration in the embodiment.

(產業上之可利用性) (industrial availability)

本發明係可利用為製作醫療用導管時所使用的導管軸、或內視鏡所使用的細管等軟管之製造裝置。 The present invention is a manufacturing device that can be used to manufacture flexible tubes such as catheter shafts used in the manufacture of medical catheters and thin tubes used in endoscopes.

1:模具 1: Mold

2a:第1擠出機 2a: 1st extruder

2b:第2擠出機 2b: The second extruder

3:混合閥機構 3: Mixing valve mechanism

4:切換閥機構 4: Switching valve mechanism

5:控制裝置 5: Control device

6:編包線 6: braided wire

7:軟管 7: Hose

11:內模 11: Internal mold

12:外模 12: Outer mold

13:貫通孔 13: Through hole

14:擠出口 14: Extrusion port

15,24,58a,58b,62,63a,63b:流路 15,24,58a,58b,62,63a,63b: flow path

16:樹脂注入口 16: Resin injection port

18b:第2閥 18b: 2nd valve

19,22:馬達 19,22: motor

20:螺桿 20: screw

21,32:箱體 21,32: Box

23,31:閥體 23,31: valve body

44:樹脂供應口 44: Resin supply port

100:軟管製造裝置 100:Hose manufacturing device

Claims (6)

一種軟管之製造裝置,係供擠出成形軟管用的軟管之製造裝置,具備有:模具,其係具備有使編包線插通的插通孔、以及將樹脂擠出至通過上述插通孔之上述編包線表面的擠出口;第1擠出機,其係擠出第1樹脂;第2擠出機,其係擠出較上述第1樹脂更柔軟的第2樹脂;混合閥機構,其係可擠出由從上述第1擠出機所擠出之上述第1樹脂、與從上述第2擠出機所擠出之上述第2樹脂混合的樹脂,且可改變上述第1樹脂與上述第2樹脂之混合比;第3擠出機,其係擠出較上述第2樹脂更柔軟的第3樹脂;切換閥機構,其係可將從上述混合閥機構擠出的樹脂、或從上述第3擠出機擠出的上述第3樹脂選擇性供應給上述模具;以及控制裝置,其係對上述混合閥機構與上述切換閥機構進行控制;其中,上述控制裝置係進行下述控制:於上述軟管之擠出成形時,在控制著上述切換閥機構使從上述混合閥機構所擠出的樹脂供應給上述模具之狀態下,依從上述混合閥機構擠出的樹脂中之上述第2樹脂比率增加至既定值的目的,控制著上述混合閥機構,當上述第2樹脂比率達上述既定值時,便控制上述切換閥機構使上述第3樹脂供應給上述模具。 A hose manufacturing device, which is a hose manufacturing device for extruding a hose, includes: a mold with an insertion hole for inserting a braided wire; The extrusion port on the surface of the above-mentioned braided wire through the insertion hole; the first extruder extrudes the first resin; the second extruder extrudes the second resin which is softer than the first resin; mixing A valve mechanism capable of extruding a resin mixed with the above-mentioned first resin extruded from the above-mentioned first extruder and the above-mentioned second resin extruded from the above-mentioned second extruder, and capable of changing the above-mentioned first resin The mixing ratio of 1 resin and the above-mentioned second resin; the third extruder, which extrudes the third resin which is softer than the above-mentioned second resin; the switching valve mechanism, which can extrude the resin extruded from the above-mentioned mixing valve mechanism , or the above-mentioned third resin extruded from the above-mentioned third extruder is selectively supplied to the above-mentioned mold; and a control device controls the above-mentioned mixing valve mechanism and the above-mentioned switching valve mechanism; wherein, the above-mentioned control device performs the following The above-mentioned control: During the extrusion molding of the above-mentioned hose, in the state where the above-mentioned switching valve mechanism is controlled so that the resin extruded from the above-mentioned mixing valve mechanism is supplied to the above-mentioned mold, one of the resins extruded according to the above-mentioned mixing valve mechanism The mixing valve mechanism is controlled to increase the second resin ratio to a predetermined value, and when the second resin ratio reaches the predetermined value, the switching valve mechanism is controlled to supply the third resin to the mold. 如請求項1之軟管之製造裝置,其中,上述切換閥機構係設有:第1注入口,其係注入從上述混合閥機構擠出的樹脂; 第2注入口,其係注入從上述第3擠出機擠出的上述第3樹脂;樹脂供應口,其係連接於上述模具,用以將樹脂供應給上述模具;第1排出口,其係用以將從上述混合閥機構所擠出的樹脂排出至外部;以及第2排出口,其係用以將上述第3樹脂排出至外部;其中,上述切換閥機構可在第1狀態與第2狀態間切換;上述第1狀態係上述第1注入口與上述樹脂供應口相連通,且上述第2注入口與上述第2排出口相連通;上述第2狀態係上述第2注入口與上述樹脂供應口相連通,且上述第1注入口與上述第1排出口相連通。 The hose manufacturing device according to claim 1, wherein the switching valve mechanism is provided with: a first injection port for injecting the resin extruded from the mixing valve mechanism; The second injection port is for injecting the above-mentioned third resin extruded from the above-mentioned third extruder; the resin supply port is connected to the above-mentioned mold for supplying the resin to the above-mentioned mold; the first discharge port is for used to discharge the resin extruded from the above-mentioned mixing valve mechanism to the outside; and a second discharge port, which is used to discharge the above-mentioned third resin to the outside; wherein the above-mentioned switching valve mechanism can be in the first state and the second state Switch between states; the first state is that the first injection port is connected to the resin supply port, and the second injection port is connected to the second discharge port; the second state is that the second injection port is connected to the resin supply port. The supply port communicates, and the first injection port communicates with the first discharge port. 如請求項2之軟管之製造裝置,其中,上述切換閥機構係包括有:閥體,其係具有柱形狀,可在第1旋轉位置與第2旋轉位置之間圍繞中心軸旋轉;以及箱體,其係可旋轉地收容著上述閥體;其中,在上述閥體中設有:第1流路,其係當上述閥體位於上述第1旋轉位置、或上述第2旋轉位置、或上述第1旋轉位置與上述第2旋轉位置之間時,供應從上述第1注入口所注入的樹脂;以及第2流路,其係當上述閥體位於上述第1旋轉位置、或上述第2旋轉位置、或上述第1旋轉位置與上述第2旋轉位置之間時,供應從上述第2注入口所注入的樹脂;而,當上述閥體位於第1旋轉位置時,上述第1流路將上述第1注入口 與上述樹脂供應口相連接,且上述第2流路將上述第2注入口與上述第2排出口相連接;當上述閥體位於第2旋轉位置時,上述第1流路將上述第1注入口與上述第1排出口相連接,且上述第2流路將上述第2注入口與上述樹脂供應口相連接。 The hose manufacturing device according to claim 2, wherein the switching valve mechanism includes: a valve body having a cylindrical shape, rotatable around a central axis between a first rotation position and a second rotation position; Body, which is rotatably accommodated above-mentioned valve body; wherein, there is provided in above-mentioned valve body: a first flow path, which is when the above-mentioned valve body is in the above-mentioned first rotation position, or the above-mentioned second rotation position, or the above-mentioned Between the first rotation position and the second rotation position, the resin injected from the first injection port is supplied; and the second flow path is when the valve body is located at the first rotation position or the second rotation position position, or between the first rotation position and the second rotation position, the resin injected from the second injection port is supplied; and when the valve body is in the first rotation position, the first flow path will 1st injection port It is connected with the above-mentioned resin supply port, and the above-mentioned second flow path is connected with the above-mentioned second injection port and the above-mentioned second discharge port; when the above-mentioned valve body is in the second rotation position, the above-mentioned first flow path connects the above-mentioned first injection The inlet is connected to the first discharge port, and the second flow path connects the second injection port to the resin supply port. 如請求項3之軟管之製造裝置,其中,上述閥體係設有與上述中心軸正交之端面,在上述端面上,自上述閥體中心軸偏心地設置:上述第1流路下游側之端部的第1開口部、與上述第2流路下游側之端部的第2開口部;上述箱體係設有與上述閥體的上述端面接觸之平面部,在上述平面部設有:連通於上述樹脂供應口的第3開口部、連通於上述第1排出口的第4開口部、以及連通於上述第2排出口的第5開口部;當上述閥體位於上述第1旋轉位置時,上述第1開口部係重疊於上述第3開口部,但未重疊於上述第4開口部與上述第5開口部,而上述第2開口部係重疊於上述第5開口部,但未重疊於上述第3開口部;當上述閥體位於上述第2旋轉位置時,上述第2開口部係重疊於上述第3開口部,但未重疊於上述第4開口部與上述第5開口部,而上述第1開口部係未重疊於上述第3開口部。 The hose manufacturing device according to claim 3, wherein the valve system is provided with an end surface perpendicular to the central axis, and on the end surface, it is arranged eccentrically from the central axis of the valve body: the downstream side of the first flow path The first opening at the end, and the second opening at the end of the downstream side of the second flow path; the box system is provided with a flat surface in contact with the above-mentioned end surface of the valve body, and the flat surface is provided with: communication In the third opening of the resin supply port, the fourth opening connected to the first discharge port, and the fifth opening connected to the second discharge port; when the valve body is located at the first rotation position, The first opening overlaps the third opening but does not overlap the fourth opening and the fifth opening, and the second opening overlaps the fifth opening but does not overlap the fifth opening. 3rd opening; when the valve body is in the 2nd rotation position, the 2nd opening overlaps the 3rd opening, but does not overlap the 4th opening and the 5th opening. The 1st opening does not overlap with the 3rd opening mentioned above. 如請求項4之軟管之製造裝置,其中,在上述閥體的上述端面,自上述閥體中心軸偏心地設置:上述第1流路上游側之端部的第6開口部、及上述第2流路上游側之端部的第7開口部;在上述箱體的上述平面部中,設有:連通於上述第1注入口的溝狀之第 8開口部、及連通於上述第2注入口的溝狀之第9開口部;當上述閥體位於上述第1旋轉位置、或上述第2旋轉位置、或上述第1旋轉位置與上述第2旋轉位置之間時,上述第6開口部係重疊於上述第8開口部,而上述第7開口部係重疊於上述第9開口部。 The hose manufacturing device according to claim 4, wherein, on the end surface of the valve body, the sixth opening at the upstream end of the first flow path and the first opening are provided eccentrically from the central axis of the valve body on the end surface of the valve body. 2. The seventh opening at the end of the upstream side of the flow path; on the flat surface of the above-mentioned box, there is provided a groove-like first opening that communicates with the first injection port. 8 opening, and the groove-shaped ninth opening connected to the second injection port; when the valve body is at the first rotation position, or the second rotation position, or at the Between the positions, the sixth opening overlaps the eighth opening, and the seventh opening overlaps the ninth opening. 如請求項4或5之軟管之製造裝置,其中,上述切換閥機構係更進一步包括有:將上述閥體的上述端面按壓於上述箱體之上述平面部的按壓構件。The hose manufacturing device according to claim 4 or 5, wherein the switching valve mechanism further includes: a pressing member that presses the end surface of the valve body against the flat surface of the box body.
TW109115955A 2019-05-14 2020-05-14 Flexible tube manufacturing apparatus TWI788663B (en)

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US4888146A (en) * 1988-05-19 1989-12-19 Dandeneau James V Method and apparatus of forming extruded article
US6135992A (en) * 1994-04-20 2000-10-24 Wang; James C. Medical catheter
CN106113432A (en) * 2015-05-04 2016-11-16 诺信公司 Extrusion device and using method thereof
CN107263839A (en) * 2016-04-06 2017-10-20 格拉汉姆工程公司 Apparatus and method for continuously extruding the tubing with different materials
TW201800211A (en) * 2016-06-28 2018-01-01 Pla技研股份有限公司 Flexible tube and production apparatus therefor

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