US2273454A - Underfeed riveting machine - Google Patents

Description

Feb. 17, 1942. A. WARD UNDERFEED' RIVETING MACHINE Filed Feb. 25, 1938 LQIUYD A. WARD I Patented Feb. 17, 1942 UNDERFEED RIVETING MACHINE Loyd A. Ward, Jackson, Mich, assignor to Tomkins-Johnson Company, Jackson, Mich., a corporation of Michigan 25, 1938, Serial No. 192,467

. Application February 20 Claims.

This invention relates to riveting machines and the like and more particularly to such machines of the underfeed type.

In certain types of riveting machines it is desirable that the upsettable memberbe automatically positioned on the anvil in proper alignment with the set to permit the work to be disposed over the upsettable member before the heading up thereof. The present invention contemplates the provision of a riveting machine or the like for automatically presenting an upsettable member for receiving the work, the machine being arranged to quickly, accurately and efliciently present and feed upsettable members as rapidly as may be desired, the upsettable members being fed to a position beneath th set and moved upwardly provide a riveting machine or the lik having a vertically reciprocable anvil wherein. the movement of the anvil is coordinated with the feeding of the upsettable members. V

A still further object of the invention is to pro- ,vi-de a riveting machine or the like ofthe char acter set forth having a movable anvil and coordinated rivet feeding and anvil movement, which is semi-automatically controlled.

These and other objects will be apparent from the following specification when taken with the accompanying drawing, in which i Fig. 1 is a partial vertical section disclosin the details of the construction of. the machine comprising the invention,

Fig. 2 is a section on the line II--II of Fig. 1, showing a detail, 1

Fig. 3 is a section on the line llI-III of Fig. 1, showing the feeding chute, and

Fig, 4 is a view similar to a portion of Fig, 1, disclosing the anvil and its associated structure in retracted position.

Referring particularlyto the drawing, the reference character I indicates a frame. Mounted for reciprocatorymovement in the frame I is a ram 2, to which is secured a set 3. Mounted follower 8 swingable about a pivot 9.

R5 acting hopper.

directly beneath the set 3 is a vertically reciprocae ble anvil 4 slidably disposed in an anvil guiding member 5. The anvil guiding member 5 is secured to a head 6 connected to the frame I in any suitable manner. Vertical displacement of the head 6 with respect to the frame I due to the upsetting thrust is resisted by a key 1.

The anvil 4 is shown in Fig, l in its uppermost or active position and is maintained there by a The follower 8 is moved upwardly about the pivot 9 by a cam l0 slidable in a slideway l l in the housing l2 and a portion of the head 6. The housin I2 is mounted on the frame I and also supports the pivot 9. The cam I0 is reciprocated in its slideway H by a piston l3 movable in a cylinder I4, the cylinder l4 being secured to the housing l2 in alignment with the slideway l l.

The anvil 4 has depending therefrom a rod 20,

the lower portion of which projects from the bottom of the head 6 and has disposed thereon a helical spring 2i held on the rod by a stop 22. Thus, the spring 2| acting against the stop 22 and the lower side of the head 6. continuously urges the anvil 4 downwardly. The rod 20 extends through a channel 23 in the follower B, as shown particularly in Fig. 2, and through a similar channel in the cam l0.

A horizontal feeding channel 24 projects through an opening 25 in the side'of the anvil guide 5 and at the opposite end communicates with a feeding chute 26, as shown in Fig. 3. The feeding chute may be supplied with upsettable members either manually or by an automatically A feeding plunger 21 is slidably arranged in a slideway 28 in a housing 29 securedto the frame I. Movement of the feeding plunger 21 in one direction is limited by the adjusting screw stop 30. Movement is imparted to the feeding plunger 21 bya rocker arm 3| 0scillatable about a pivot 32 mounted in the housing 29, and movement is imparted to the rocker arm 3| by a plunger 33 slidable in a slideway 34 in the housing 29. Openings 35 and 36 in the plungers 21 and 33, respectively, provide operating connections with the rocker arm 3|.

'In operation of the invention, a controlling device of the character disclosed in the copending patent applications of Harold A. Tomkins, Serial No. 53,404, filed December '7, 1935, and Harold A.

Tomkins et al., Serial No. 86,106, filed June 19,

1936, is employed, although other controlling devices may be used if desired. As shown, the anvil 4 has disposed thereon an upsettable member 40,

which may be a rivet of any desired character,

is connected to the cam It by a rods '43 and 4t 'andthe cam lower 8 a clinch nut, or the like. The work is disposed over the upsettable member 40 and the machine operated in a conventional manner to move the set 3 downwardly to upset the upsettable member 40 to secure it to the work. As shown in Fig. 1, the follower 8 and the cam Ill back up the anvil 4 to provide a solid foundation to the bottom of the head 6.

The control device disclosed in the aforesaid patent aplications is of the character wherein the move a distributing valve to air to the cylinder 14 from a the left end of the cylinder Hi to urge the piston I3 to the right. "The piston 13 piston rod 43. Thus, movement of the piston {3 to the right moves the cam 19 to the right, with the result thatdue to the action of gravity and of the spring 2| the follower 8 and the anvil t both move to their lowermost positions, as shown the anvil guide 5.

is ready to receive the channel 24.

The alignment of the anvil 4 with In this position the anvil 4 limiting the downward movement of the arm 39 of the follower 8. The stop 38 may be fixed or adjustable, as desired.

The piston I3 is provided on the opposite side 'As soon as an upsettable member has been deposited on the top of the anvil 4, the "extension 45 of the outer end of the and opens a push button valve 48 normally maintained closed by a spring 47 to exhaust air from the conduit 43 cating'therewith on of the port 49. results in the moving of the control valve (not the type disclosed in the applications, to admit compressed air from a source through the inlet 55 and the port 55 into the left end of the cylinder 14 to urge the piston 53, together with the piston Iii, to'the left. As H) moves to the left, it engages the folto cam the same upwardly about the pivot 9 and to lift the anvil 4, through the folthe cam an upsettable member from lower 8, to its uppermost or active position, as shown in Fig. 1. A new upsettable member 40 is then disposed in position to receive the work and to permit the upsetting operation to be repeated. It is preferred that the upsettable memguide 5 guide the upsettable members 43 and hold them in exact alignment to be acted on by the set 3.

spring 5'! bearing against a washer 58,

plunger 33 by a pin 59, to yieldingly urge the plunger 33 to the left to return the rocker arm 3! and the plunger 21 to their positions, as shown in Fig. 1. As the plunger 2? moves to the right, it permits another updown the chute 26 into sults in the retracting of theanvil t to its lowermost position, the disposal of an upsettable member 48 thereon, andthe returning of the anvil 4 to its uppermostor active position without any further manual control. It will also be clear that while the invention is disclosed as applied housings I2 and 29 are disposed. While this form of frame construction has been found to be Very desirable, yet it is to be understood that the limited to this particular form of arrangement. Also, equivalent lost motion constructions may besubstituted for that disclosed between the plunger 33 and piston rod M. For instance, the piston rod 44 could be employed to positively return the plunger to its leftward position rather thanthe spring 57.

Having thus described my invention, what I desire to claim and secure by Letters Patent is: 1. A machine of the character described, comprising a way along said feeding means to operate the latter whereby when said anvil reaches its retracted position said connection becomes effective to actuate said feeding means to feed an upsettable member from said channel onto said anvil.

2!. A machine of substantially in said channel, means to feed a single upsettable member from said channel onto said anvil,-and a lost motion delayed action connection between said anvil moving means and said feeding means to operate the latter whereby when said anvil reaches its retracted position said connection becomes-effective to actuate said feeding means to feed an upsettable member from said channel onto said anvil.

3. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative-relation with said set, a channel for feeding upsettable members onto said anvil, means to reciprocate said anvil into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with said channel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, and a lost motion delayed action connection between said anvil moving means and said feeding means to operate the latter, whereby when said V anvil reaches its retracted position said connection becomes effective to actuate said feeding means to feed an upsettable member into said channel from said source and another upsettable member from said channel onto said anvil.

4. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, an anvil guiding member havinga slideway along which said anvil moves, a channel for feeding upsettable members communicating with said slideway, means to reciprocate said anvil in said slideway into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with said channel, means to feed a single upsettable member from said source into said channel and another upsettable member from said channel onto said,

anvil, and a lost motion delayed action connection between said anvil moving means and said feeding means to operate the latter, whereby when said anvil reaches its retracted position said connection becomes effective to actuate said feeding means to feed an upsettable member from said source into said channel and another upsettable member from said channel 'onto said anvil.

5. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, an anvil guiding member having a slideway along which said anvil moves, a channel for feeding upsettable members communicating with said slideway, means to reciprocate said anvil in said slideway into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with saidchannel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from saidchannel onto said anvil, means yieldingly urging said last named means out of feeding relation, and a lost motion connection between said anvil mov-. ing means and said feeding means to overcome the action of said yieldable means and to actuate said feeding means to feed, when said anvil reaches its retracted position, an upsettable member into said channel from said source and another upsettable member from said channel onto said anvil.

of said channel, means to feed a single upsettable memberv from said channel onto said anvil, yieldable means urging said feeding means out of feeding relation with said channel, and a lost motion connection between said anvil moving means and said feeding means to overcome said yieldable means and to operate said feeding means, whereby when said anvil reaches its retracted position said connection becomes effective to actuate said feeding means to feed an upsettable member from said channel onto said anvil.

"7. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, a channel for feeding upsettable members onto said anvil, means to reciprocate said anvil into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, means to feed a single upsettable member from said channel onto said anvil, yieldable means urging said feeding means out of feeding relation with said channel, a lost motion connection between said anvil moving means and said feeding means to overcome said yieldable means and to operate said feeding means, whereby when said anvil reaches its retracted position said connection becomes effective to actuate said feeding means to feed an upsettable member from said channel onto said anvil, and means to replenish the supply of upsettable members in said channel.

8. A machine of the character described, comprising a vertically movable set, means to operate said set, a vertically movable anvil movable into and out of operative relation with said set,.

an anvil guiding member having a vertical slideway through which said anvil moves, a channel for feeding upsettable members communicating with said slideway, means to reciprocate said anvil in said slideway into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, means to feed a single upsettable member from said channel onto said anvil, and a lost motion delayed action connection between said anvil moving means and said feeding means to operate the latter, whereby when said anvil reaches its retracted position said connection becomes effective to actuate said feeding means to feed an upsettable member onto said anvil.

9. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, an anvil guiding member having a slideway along which said anvil moves, a channelfor feeding upsettable members communicating with said slideway, means to reciprocate said anvil in said'slideway into and out of operative relation with said set, said anvilin its retracted position being substantially in alignment with the bottom of said channel, a source of upsettablemembers communicating with "said channel,- means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, and a lost motion delayed action connection between saidanvil-moving means and said feeding means,.inionei position thereof to move said fe'eding'means out of feeding relation and in another position thereof to actuate said feeding means whensaid anvil reaches its retracted position to feed an upsettable member into said channel from said source and another upsettable member from said channel onto said anvil.

10. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said'set, an anvil guiding member having a slideway along which said anvil moves, a'channel for feeding upsettable members communicating with said slideway, a fluid operated piston to reciprocate said anvil in said slideway into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable 'members communicating with said channel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, and a lost motion connection between said piston and said feeding means, in one position thereof to move said feeding means out of feeding relation and in another position thereof to actuate said feeding means when said anvil reaches its retracted position to feed an upsettable member into said channel from said source and another upsettable member'from said channel onto said anvil.

11. A machine of the character described comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, an'anvil guiding member having a slideway along which said anvil moves, a channel for feeding upsettable members communicating with said slideway, a cam for reciprocating said anvil in said slideway into and out of operative relation with said set, a fluid actuated piston for operating said cam, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with said channel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, means yieldingly urging said last named means out of feeding relation, and a lost motion connection between said anvil and said piston to overcome the action of said yieldable means and to actuate said feeding means when said anvil reaches its retracted position to feed an upsettable member into said channel from said source and another upsettable member from said channel onto said anvil.

12. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, an anvil guiding member having a slideway along which said anvil moves, a channel for feeding upsettable members communicating with said slideway, a cam for reciprocating said anvil in said slideway into and out of operative relation with said set, a fluid actuated piston for operating said cam, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with said channel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, a movable member for actuating said feeding means, a piston rod projecting from said piston, and a lost motion connection between said piston rod and said movable member, in one position'to move said feeding means out of feeding relation, and in another position to actuate said feeding means when said anvil reaches its retracted position, to feed an upsettable member into said channel from said source and another upsettable member from said channel onto said anvil.

13. A machine of the character described, comprising a set,-means to operate said set, an anvil movable into and out of operative relation with saidset, an anvil guiding member having a slideway along which said anvil moves, a channel for feeding upsettablemembers communicating with said slideway, a cam for reciprocating said anvil in said slideway into and out of operative relation-with said 'set,- a fluid actuated piston for operating said cam, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with said channel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, a movable member for operating said feeding means, means resiliently urging'said feeding means out of feeding relation, and a piston rod projecting from said piston, said piston rod being in alignment with said movable member and spaced therefrom when said anvil is in active position, said piston rod being movable when said piston moves to retractsaid anvil to close the space between it and said movable member and then to actuate said movable member to actuate said feeding means. to feed an upsettable member into said channel from said, source and'another upsettable member from-said channel onto said anvil.

'14; A machine of: the character described, comprising a set, means to operate said set, an anvil'm-ovable into and out of operative relation withcsaid set,an anvil guiding member having a slideway along which said anvil moves, a channel' for feeding upsettable members communicating with said slideway, means to reciprocate said anvil in said slideway into and out of operative. relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, means to feed a single upsettable member from said channel onto: said anvil, a movable member, to actuate said feeding means, means to yieldingly urge movable member and then to engage said movablemember to actuate said feeding means to feed an upsettable member from said channel onto said anvil.

15.- A machine of the character described,

comprising a set, means to-operate said set, an anvil movable into and out of operative relation with said set, a channel for feeding upsettable members onto said anvil, means to reciprocate said anvil into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, means to feed a single upsettable member from said channel onto said anvil, a movable member for actuating said feeding means, yieldable means for moving said feeding means out of feeding relation, and a member projecting from said anvil reciprocating means, said projecting member being in alignment with and spaced from said movable member when said anvil is in active position, said projecting member being movable when said anvil is moved from its active to its retracted position to close the space between said projecting member and said movable member and then to engage said movable member to actuate said feeding means to feed an upsettable member from said channel onto said anvil.

16. A machine of the character described,

comp-rising a set, means to operate said set, an anvil movable int-o and out of operative relation with said set, an anvil guiding member having a slideway along which said anvil moves, a channel for feeding upsettable members communicating with said slideway, a cam follower for actuating said anvil into and out of operative relation with said set, a cam for coacting with said cam follower to actuate the same, a fluid actuated piston for actuating said cam, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with said channel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, means yieldingly urging said last named means out of feeding relation, and a lost motion connection between said feeding means and said piston to overcome the action of said yieldable means and to actuate said feeding means, when said anvil reaches its retracted position, to feed an upsettable member into said channel from said source and another upsettable member from said channel onto said anvil.

17. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, an anvil guiding member having a slideway along which said anvil moves, a channel for feeding upsettable members communicating with said slideway, a cam follower for actuating said anvil into and out of operative relation with said set, a cam for coacting with said cam follower to actuate the same, a fluid actuated piston for actuating said cam, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a source of upsettable members communicating with said channel, means to feed a single upsettable member from said source into said channel and at the same time another upsettable member from said channel onto said anvil, means yieldingly urging said last named means out of feeding relation, a movable member to actuate said feeding means, and a piston rod projecting from said piston, said piston rod being in alignment with said movable member and spaced therefrom when said anvil is in active position, said piston rod being movable when said piston moves to retract said anvil to close the space between it and said movable member and then to actuate said movable member to actuate said feeding means to feed an upsettable member into said channel from said source and another upsettable member from said channel onto said anvil.

18. A machine of the character described, comprising a vertically movable set, means to operate said set, a vertically movable anvil movable into and out of operative relation with said set, an anvil guiding member having a vertical tubular slideway through which said anvil moves, said tubular slideway being substantially the same in cross-section as said anvil, a channel for feeding upsettable members communicating with said slideway below the top thereof, means to reciprocate said anvil in said slideway into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, means to feed a single upsettable member from said channel onto said anvil, and a lost motion delayed action connection between said anvil moving means and said feeding means to operate the latter, whereby when said anvil reaches its retracted position said connection becomes effective to actuate said feeding means to feed an upsettable member onto said anvil, said upsettable member being guided by said slideway when said anvil moves upwardly.

19. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, a channel for feeding upsettable members onto said anvil, means to reciprocate said anvil into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a rocker arm pivoted between its ends, feeding means connected to one end of said rocker arm for feeding a single upsettable member from said channel onto said anvil, and a connection between said anvil reciprocating means and the other end of said rocker arm for actuating said feeding means to feed an upsettable member from said channel onto said anvil.

20. A machine of the character described, comprising a set, means to operate said set, an anvil movable into and out of operative relation with said set, a channel for feeding upsettable members onto said anvil, means to reciprocate said anvil into and out of operative relation with said set, said anvil in its retracted position being substantially in alignment with the bottom of said channel, a rocker arm, feeding means connected to one end of said rocker arm pivoted between its ends to feed a single upsettable member from said channel onto said anvil, a movable member to actuate said rocker arm to feed an upsettable member, means to yieldingly urge said feeding means out of feeding relation, and a member projecting from said anvil reciprocating means, said projecting member being in alignment with said movable member and spaced therefrom when said anvil is in its active position, said projecting member being movable when said anvil reciprocating means moves to retract said anvil to close the space between it and said movable member and then to engage said mov able member to actuate said feeding means to feed an upsettable member from said channel onto said anvil.

' LOYD A. WARD.

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