DK154285B - PROCEDURE AND APPARATUS FOR PACKAGING SPACIAL ITEMS - Google Patents

Description

DK 154285 B

z

The invention relates to a method for packaging small spatial objects according to the preamble of claim 1 and an apparatus for carrying out the method according to the preamble of claim 4.

5 Using a known method and apparatus, confectionery pieces are packaged in such a way that pre-cut packaging foil sections and the confectionary piece are successively brought into a processing station so that the confectionary piece is squeezed between two 10 bars and the packaging foil section is clamped with its center region a thrust bar and the confectionary piece.

The initially flattened packaging foil section is then preformed - by virtue of the joint movement of the bumpers, confectionary and packaging foil section - into a mold cavity such that it is laid around the confectionary. This means that the initially wrapped packaging film material is reshaped on the piece of confectionery itself. When the confectionary piece or other article intended for packaging has an uneven, possibly provided outer surface, in this kind of packaging there is the danger of the projections pushing through the foil material and thereby destroying it. This, of course, results in the packaged confectionery piece getting an unhealthy appearance.

The method mentioned and the apparatus mentioned above are known from GB-PS 540 606, according to which the packing film in planar form is laid over the opening of a mold matrix. Then, the flat surface shape is drawn by means of suction air against the inner wall of the mold, while retaining the edge of the surface mold. In the thus-formed wrapper of packing foil, the article to be wrapped is then loaded and the suction pressure is released, and the packing film shrinks around the article. The protruding portion of the foil is then manually wrapped 35 to completely seal the gasket. For the purpose of shrinkage, the foil is heated. By this shrink- 2

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On the other hand, there is a danger that protruding parts of the article to be wrapped will protrude through the packing material, thereby causing poor-looking packaging and, in part, preventing hermetically sealed packing.

According to GB-PS 627 460, the packaging of an article is also effected by forming a pre-stamped foil by means of a mold piston in a mold die.

Here, too, the packing material consists of a heat-stretchable film material. The piston is inserted into the cavity of the mold die, thereby stretching the heated film material and then holding it by vacuum until the article to be packed is introduced. Here, too, the disadvantages mentioned above appear.

15 It is common to close a packing material which is still open on one side with the introduced article, in that several closing parts act from different sides on the open area of the packing material. This results in a complicated device design.

It is an object of the invention to provide a method and apparatus of the kind in which the packing of a spatial object, especially a confectionary piece, where appropriate a spherical confectionary piece, can be gentle so that neither the confectionary piece nor the packing material itself is damaged. . In this way, especially the closure of the gasket after the insertion of the object must be improved.

This object is fulfilled according to the invention by the characterizing part of claims 1 and 4.

In this solution, the wrapping of the packing film formed around the object is closed by a relative movement between the additional mold space and the envelope, including the object, which, unlike the prior art, is possible in a simple manner because this process is supported. of said suction power. Thereby, in particular, is a gentle closure of the wrapper around the object 3

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and on the article possible without damaging the article and packaging material by this method.

In the case of claim 2, a lateral sliding of the wrapper with the article lying therein during its raising is prevented in a particularly simple manner.

At the confining space of the further mold die, the free edges of the shroud in their opening region are moved towards each other by an increasing relative movement between mold die and shroud, the course of which is supported by the suction force.

Advantageously, the mold piston also has a suction opening at its front so that the gasket foil cannot slip during the shaping of the wrapper. This makes it possible to handle a packing film with a relatively small surface and thus saves packing film material.

The advantages mentioned above are particularly evident when using plastic moldable aluminum foil material. The production of articles to be packaged can be increased by such a method by increasing the throughput rate without damaging the sparing gasket.

The invention will now be explained in more detail with reference to the drawing, in which: FIG. 1a shows a main packaging line or path for packaging spherical confectionery pieces; FIG. 1b is a side packaging line or path for administering the spherical confectionery pieces in a pleated and for dispensing a label; 2a is a partial view similar to line II-II of FIG. 1 to illustrate two foil unwinding and cutting devices as well as a preform; FIG. 2b is a longitudinal section through the preform device; FIG. 3a is a perspective view of the cutting device and the preform assembly; FIG. 3b is a detailed side view of the cutting device;

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4 FIG. 4 is a side view, partly in section, of a device for inserting confectionery pieces into preformed packaging foil sections; FIG. 5 is a sectional view of a device for closing the preformed packaging material section with the spherical confectionery piece therein; Fig. 6 is a sectional view of a device for transferring the packaged confectionery pieces and for inserting them into pleated leads leading to the side embossing web; 7 is a sectional view of a device for placing the pleated on a side packing web conveyor belt.

According to FIG. 1a, the headpiece is constituted by a main packing line or path A of an orbital endless conveyor 10, composed of carrier-linked, laminated carriers extending transversely to the conveying direction. To the working party 10a, i.e. the upper portion of the endless conveyor belt 10, there are a plurality of processing stations formed by a series of devices which, in the direction of the conveyor belt's forward movement - indicated by an arrow C in FIG. la - are placed behind each other and partly above and below the working party respectively.

The apparatus according to the invention includes a device D1 for feeding and cutting the packaging film material, a device E for preforming the cut packaging material sections, a further device D2 for feeding and cutting the packaging film material, a device F for feeding and administration of confectionery pieces in the preformed cut film foil material portions G, a device for checking the presence of confectionery pieces in the preformed cut portion of the packaging foil material and for blowing out the preformed packaging foil material from the carrier in the absence of a cone.

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a piece of piece therein, a device H for sealing the preformed, cut foil material portion with the confectionery piece present therein, and a device I for surrendering the packaged confectionery pieces to the conveyor belt B's conveyor belt and for inserting confectionery pieces into pleated ends side conveyor belt B's conveyor belt.

As shown in FIG. 1b, the side packing web B has as a core a further endless transit port belt 14 extending transversely of the forward movement direction of the main packing path A's endless conveyor belt 10, and over which is arranged part of the device I. In the forward movement direction of the conveyor belt 14, in front of the device I in a device K for depositing pleated from a bearing - on the conveyor belt 14 as well as a device L for applying a glue point to the inner bottom of the pleated, and behind the device I there is a device M for application of a label of 20 the confectionery wrapped piece in the plissé.

The individual devices are described below with the aid of the additional figures, with reference to FIG. 3a and 3b first describe the device D1 and D2 respectively for supplying and cutting the packaging foil material. The two devices are identical but operate with respect to supplying the foil material to the device E in opposite directions, where it should be noted that the drive, in particular of the conveyor belt 10, is intermittent, ie. walkthrough.

30 The packaging film material is pulled from a roll 16 having a width such that the packaging film material can be cut into a row containing a total of seven cut material parts Z, fig. 3a, arranged in the forward movement direction of the conveyor belt 10 next to each other, each of which is intended for packaging a confectionery piece.

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Following the roll 16, the packaging foil material V runs over a rolling system 18, two rolls 20 of which are arranged on a pivotable weight arm 22. The weight arm provides in the rolling system 18 a material stock 24, 5 which stores just as much packaging foil material as must be deducted at that time. cut material part. Therefore, the relatively thin foil material must not be pulled directly from the heavy roll 16. Behind the roll system 18 is a 10 pivotal knife carrier 26 on which eight circular knives 28 are arranged, which cut across the film in seven longitudinal strips 30 of the same direction. width. Behind the circular knives 28 there is a clamping arm 32 which prevents a back slip of the foil when a new supply is formed in the rolling system 18.

The pull of the material stock 24 is effected by means of a carriage 34 which can be moved back and forth in the direction of a double arrow 20 38 via a lever system 36. When moving to the left in FIG. 3b, the foil is pulled off when a clamping arm 42 controlled by a wall arm 40 clamps the packaging foil material against the carriage 34. This clamping arm 42 moves together with the carriage 34.

The carriage 34 moves a sufficient amount of packaging film material in the width required in the forward motion over a carrier 12 of the conveyor belt 10 having mold space 44 lying in a row transversely of the forward motion direction. Immediately in front of this carrier 12 is a transverse cutting device 46 which separates the longitudinal foil webs 30 in a transverse direction in such a way that approximately square, cut material portions z lie in the middle above each of the apertures 48 to a mold space 44.

35 As already explained, there are - as shown in FIG. 1a - two devices for supply and supply

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7 cuts the packaging foil material on each side of a device for preforming the cut material parts Z. The device E arranged between these two devices D1 and D2 for preforming the cut 5 material parts Z comprises a cross head 50 with two rows of mold pistons 52, each includes seven mold stamps. The mold pistons in the two rows are positioned one another with half the mold pistons transverse to the forward travel direction of the conveyor belt 10, wherein the mold pistons in each row belong to the mold space 44 of the carriers 12 in such a way that each mold piston in each row belongs only to each other of the mold space 44 of the carrier 12. This means that each mold piston row belongs to seven of the fourteen of the mold space 44 of the carrier 12 which are disposed transversely of the forward travel direction of the conveyor belt 10. Thus, the cut length strips 30 are also preferably provided with a half cutting width for each other.

For space-saving reasons, the fourteen mold compartments 20 44, with their top openings 48, are arranged so close to each other that the size of the cut material part Z necessary for packaging the confectionary piece covers several openings 48, i.e. during the preforming, an overlap of the 25 cut material parts is prevented. Therefore, initially the first seven cut material parts are preformed by means of a mold piston row, after which the other seven stamped material pieces are preformed at a later location, ie. of course, although the two mold piston rows can of course be moved simultaneously into the mold space 44 of the carriers 12 by means of the crosshead 50, whereby the mold piston rows 52 - as can be seen in FIG. la - will lie center to center with two carriers-35 widths apart. In particular, the continued arrangement of the length strips 30 and the arrangement of the openings 48 in the carrier 12 can be seen in FIG. 2a.

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The processing process of the preform is explained by means of FIG. 2b and 3a, the associated parts of FIG.

3a with respect to the mode of operation is merely shown schematically.

Between the mold piston 52 and the carrier 12 there is a stationary intermediate molding 54 having breakthroughs 56 which the mold piston 52 can pass through.

Along with the mold piston 52, a clamping strip 58 moves over the middle strip 54.

When the cut material part Z is 10 on the intermediate strip 54, it is drawn by means of a suction air force on the intermediate strip - thereby preventing a springing up of the material part Z and thus ensuring a uniform folding during the preforming. The clamping strip 58 further squeezes the material portion Z so that a symmetrical deformation thereof can occur. FIG. 3a schematically shows the upper and lower positions of the mold piston 52 with the starting state of the material part Z and the preformed formation or shape Z '.

FIG. 2b also shows an operating mechanism 20 60 for the mold piston 52.

2b, that a suction channel 62 is located inside the mold piston 52, which mouths at the end side 64 of the mold piston, where it initially abuts against the material part Z. By means of the suction force in the channel 25, the material part Z the mold space 44 is further held centrally so that a symmetrical deformation of the material part Z is ensured.

FIG. 4 shows the device F for supplying and inserting the spherical confectionery pieces P in the preformed formation or form Z ', which confectionery pieces P are introduced stepwise into the mold space 44 of the carriers 12. As can be seen in fig. 4, at the same time four rows of confectionery pieces are added, each containing a total of seven confectionery pieces. The confectionery pieces are brought across the conveying direction of the conveyor belt 10 via conveyor belt 66 into the region of a tear device 68,

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9 which can be displaced by the drive mechanism 70 in the forward movement direction of the carriers 12. At this displacement, the confectionery pieces P - corresponding to arrows 72 - fall into funnels 72 disposed above the mold cavities 44, 5 and thereafter into the preformed formation or mold Z 'of the packaging foil material.

As shown in FIG. 4, the carriers 12 move stepwise in a manner similar to that of FIG. 1a shows device G for checking the presence of confectionery pieces in the preformed shapes or shapes of the packaging foil material. This device consists essentially of a care rod 74 having a rubber piston 76 on its underside and which is operated via an operating mechanism 78.

If said suction bowl or rubber plunger 76 abuts a confectionary piece P, the plunger rod returns to its initial position, controlled in such a way that, upon application of the suction bowl, no longer can blow air through the rubber plunger, but if the plunger rod - in the absence of a confectionary piece moving further downward, without the suction bowl coming into contact with a confectionary piece, the preformed formation or mold Z 'is blown out from the respective mold space 44 so that this preformed formation or form of the packaging film material during the later automatic rescheduling steps 25 should not lead to interruptions of the automatic course. The formation or mold Z 'is blown into a hopper 78 and passed through a tube 80.

The closure of the packaging, ie. the preformed formation or form Z 'occurs in the device H shown in greater detail in FIG. 5. This device preferably consists of two mold matrices 81 disposed stationary in the forward travel direction of the carriers 12 and the cavity 84 of which narrows away from the carriers 12.

In the narrowed section of the cavity 84 of each mold matrix 35, a rod 86 can be inserted which - corresponding to a double arrow 82 - can be moved forward and backward.

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10 ge. At the lower end of the mold compartment 44 there is an opening 88 through which a thrust bar 90 can be inserted, corresponding to a double arrow 92 in FIG. 5 - can be moved upwards and downwards by means of an actuating mechanism 94. The thrust bar 90 opens in an end surface 98 which, on the closed section of the packaging film form or form Z and above this section, comes into direct contact with the confection piece P.

The process for closing the formation or mold 10 is as follows.

The thrust bars 90 are moved upwardly by the operating mechanism 94. The suction force provided by the suction channels 94 thereby holds the preformed formation or shape Z 'of the packaging foil material in a fixed relation to the confection piece P. Thus, the preformed formation or form Z' is pushed in together with the confection piece P in the cavity 84 of the mold die 81. Via a suction line 100, a suction force acts in the cavity 84 by means of which, in connection with the shape of the cavity 84 of the mold die 81, a gripping of the edge of the packaging piece extending over the confectionary piece takes place. the preformed formation or form z 'of the foil material.

This can be seen in FIG. 5, where the confectionary piece is shown dotted in this state. This results in a tail-like, gripped foil continuation Z1 '. On this continuation, the rod 86 is actuated from above in such a way that it is compressed into a small accumulation of material.

The intermediates thus produced fall 30 again into the mold space 44 of the carriers 12 and are transported further to the device I, shown in detail in FIG. 6. This device consists of two rows of thrust rods 102 which can be moved upwards and downwards by means of an operating mechanism 104 - corresponding to a double arrow 106, 35 and which, during the upward movement, bumps through the lower openings 88 of the mold cavities 44, thereby supporting the packaging 11.

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the confectionery pieces P upwardly and outwardly from the mold cavities 44, whereby the already mentioned small material accumulations Z '' 'will lie above. In each thrust rod 102 there is a suction duct 108, which mouths at the upper end side of the thrust rod and there, by means of a suction force, holds the packaged confection piece P during the upward movement. The shock bars 108 transfer the confectionery pieces P to a swing mechanism 110, consisting of two rows of spring loaded holding rods: il2, which 10 with suction cups 114 hold the transferred packaged confectionary pieces and swing them 90 ° - in the direction of a double arrow 116 - to the dotted position. The confectionery pieces P are then taken over by an additional swing mechanism 118, which also has two rows of holding bars 120, by means of which the confection pieces are taken over by suction cups 122. This swing mechanism 118 swings - corresponding to a double arrow 124 - 9.0 ° from the dotted position shown to the fully extended position shown, whereby the holding bars 120 - as indicated by 20 double arrows 126 - can be further moved in the direction of their longitudinal axis.

The pivot mechanism 118 is located over the conveyor belt 14 of the side packaging web B, to which the plies 128 described hereinafter are inserted. As can be seen from FIG. 6, the packaged confectionery pieces P are administered by means of the swing mechanism 118 into the pleated and adhered there. With the 180 ° oscillation, the small material accumulations Z '' 'will appear invisible within the pleat.

In an embodiment of FIG. 7 illustrates the arrangement for placing the plies 128 on the conveyor belt 14 including two rows of spring-loaded pivot push rods 130 which, with a longitudinal movement - similar to a double arrow 132 - take the plisses from magazines 134 in such a way that the plisses - via the rods Existing suction channels 136 - Sucked against the thrust bars and held

Claims (7)

A method of packing small spatial objects, in particular, a spherical confectionery piece, in a packing film, in particular a plastic deformable film, in particular aluminum foil, wherein the film in a substantially planar shape is laid over an opening of a mold space and inserted into it. forms an upwardly open envelope into which the article is inserted, after which the opening of the envelope upon gripping the foil is closed such that the portion of the article which, after insertion of the article into the envelope is not covered by the foil, is covered with the foil, characterized in that the envelope for closure of its opening together with the object is pushed into an additional molding surface lying thereon, and the film is thereby applied to the object, a suction force supporting the gripping. Method according to Claim 1, characterized in that a suction force so directed against the foil is used that, by raising the wrapper with the article lying therein into the further mold space at the sides facing the opening, it is secured against sliding. . Method according to claim 1 or 2, characterized in that the foil protruding at the gripped end is pressed against the article. Apparatus for carrying out the method according to claim 1, with a device for applying the foil and placing it over an opening of the molding mat adapted to the article, a mold for forming the foil in the molding matrix, a device for introducing the article into the formed mold, and a device for gripping the foil, characterized in that a thrust rod (90) is provided which can move downwardly through the mold die (44) and an additional mold die (81) disposed above the die (44) if cavity narrows in and which behind the constriction has a suction duct (100). Apparatus according to claim 4 for carrying out the method according to claim 2, characterized in that a suction channel (95) is provided in the thrust rod (94) which opens at the front (98) of the thrust rod (94). Apparatus according to claim 4 or 5 for carrying out the method according to claim 3, characterized by a rod (86) arranged so that it can be inserted from above through the narrowing of the additional mold die (81). Apparatus according to any one of claims 4-6, characterized in that the mold piston (52) has a suction opening at its front side.