US2360991A - Movable anvil riveting machine - Google Patents

Description

Oct. 24, 1944. L, A. WARD ETAL I 2,369,991

MOVABLE ANVIL RIVETING MACHINE Filed Fb. 2.8; 1938 LUYD A.WARD,M EBEN D. TA YLJJF' Elam/W24 Patented Oct. 24, 1944 UNITED STATES ATENT oFFlcE.

MOVABLE ANVIL RIVETIN G MACHINE' Loyd' A. Ward and Eben D.

Taylor, Jackson,

Mich, assignors to Tomkins-Johnson Company, Jackson, Mich., a corporation of Michig an 12 Claims.

This invention relates to riveting machines and the like and more particularly to such a machine having a movable anvil.

In riveting it is often desirable to dispose a rivet or other upsettable member in supported relation to an anvil so that the work may be disposed over the upsettable member and the upsettable member headed up. Numerous structures have been developed for automatically pre senting an upsettable member in such a manner that the work may be placed over the same and the upsettable member immediatel upset. Various difiiculties have been met, such as the use of too many moving parts for economic manufacture or operation or the use of structures which do not rigidly support an upsettable member for receiving the work and being acted upon by the set. The present invention contemplates the use of a movable anvil which may be alternately moved from a position in alignment with the upsettable member feeding means to a position in cooperating relation with the set and back again.

An object of the invention is to provide a riveting machine or the like having an anvil which is laterally movable with respect -to the set.

Another object of the invention is to Provide a riveting machine or the like having a movable anvil arranged to clamp therein an upsettable member which presents the same beneath the set for being acted upon thereby.

A still further object of the invention is to provide a riveting machine or the like having an anvil moving from a station for presenting an upsettable member to the anvil, to a second station in operative relation with the rivet set, together with means controlled by the anvil moving means for controlling the feeding of the upsettable members to the anvil,

These and other objects will be apparent from the following specification when taken from the accompanying drawing, in which Fig. 1 is a partial vertical section of the present invention,

Fig. 2 is an alternative form of upsettable member feeding construction.

Referring particularly to the drawing, the reference character I indicates a frame in which is reciprocable a ram 2 having secured thereto a set 3. laterally reciprocable in a Way 5 by an arm 6 moved by suitable mechanism, but preferably by mechanism of the character disclosed in the copending application of R. O. Hoyt, Serial No. 150,357, filed June 25, 1937.

The set 3 cooperates with an anvil 4 The anvil 4 is made up of two halves, one half I being directly connected to the arm 6 and the other half 8 being connected to the half I by shoulder screws 9 having heads Ill. The half 8 is yieldably urged away from the half I by a spring II, the half 8 being slidable toward and from the half 1 on the screws 9, and the movement away from the half I being limited by the heads II).

In the upper surface of the anvil 4 is a recess I5. The recess I 5 is entirely disposed in the half I, only one side of the recess I5 being a part of the half 8. The recess I5 is for the purpose of receiving upsettable members to be acted upon by the set 3. The effect of the bi-part anvil 4 and recess I5 is that when the anvil 4 is retracted to the full line position, as disclosed in Fig. 1, the halves I and 8 of the anvil 4 are urged apart by the spring I I, and at the same time the side of the recess I5, which is a part of the half 8, is moved away from the remaining portion of the recess I5, thereby making the recess I5 in effect larger. When the anvil 4 is moved by the arm 6 into its active or dotted line position, as shown in Fig. 1, it strikes against an abutment I6, which not only fixes the position of the anvil 4 with respect to the set 3 but also causes the halves I and 8 of the anvil 4 to move together against the action of the spring II, thereby reducing the effective size of the recess I5 and aligning an upsettable member therein with respect to the set 3. It is preferred that the respective sizes of the recess I5, when the anvil 4 is in its active position, and the upsettable member therein be such that the upsettable member snugly fits in the recess I5. If desired, the respective sizes may be such that the upsettable member is lightly clamped. However, it should be loose enough to permit its removal when it has been acted on by the set 3.

Upsettable members are fed from a hopper l8 of some suitable and preferably automatically feeding design into the recess I5 when it is in its retracted or full line position, as disclosed in Fig. 1. Upsettable members from the hopper I8 are fed through a chute I9 into a recess 20 in the feeding body 2I disposed over the anvil 4 when in its retracted position The chute I9 has its lower end secured in the feeding body 2| by a set screw 22.

Extending laterally through the feeding body 2| is a bore 23, in which is slidable a member 24. In the top of the member 24, which is cylindrical, is a cut-away'flat portion 25 to provide a seat on which the lower end of an upsettable member 26 in the chute I9 may slide. As shown in Fig. 1, the

right end of the bore 23 is sealed with a plug 21. A spring 28 is disposed in the bore 23 between the plug 21 and one end of the member 24 to yieldingly urge the member 24 to the left.

Directly beneath the bore 23 in the feeding body 2| is a horizontally extending slot 35, through which projects an abutment 36 secured in the member 24. The abutment 38 not only projects beyond the bottom of the feeding body 2|, but also as it slides in the slot 35 as the member 24 reciprocates in the bore 23, it maintains the member 24 against rotation with respect to the bore 23. Projecting upwardly from the anvil 4 is a stop 31 in alignment with the slot 35 and the abutment 35. The respective positions of the abutment 35 and the stop 31 are such that when the arm 6 moves to fully retract the anvil 4, the stop 31 strikes the abutment 36, moving the member 24 to a predetermined position.

The member 24 is provided with a vertical tubular slot 38 extending centrally therethrough and spaced somewhat inwardly from the left end therof. When the anvil 4 is in its active or dotted position, as disclosed in Fig. 1, the spring 28 moves the member 24 to the left until the abutment 36 strikes the inner end 39 of the slot 35. The position of the inner end 39 of the slot 35 is such that when the abutment 35 engages it, the slot 38 is directly beneath the chute l9 so that an upsettable member in the chute 19 will gravitate into the slot 38 and be retained there by the lower wall of the bore 23. The lower wall of the bore 23 is provided with an opening 48 in vertical alignment with the recess l when the anvil 4 is in retracted position. When the anvil 4 is moved to its retracted or full line position, as shown in Fig. l, and the stop 31 retracts the abutment 38 to move it and the member 24 to the right, the recess 38 is moved into alignment with the recess l5 in the anvil 4, thereby permitting the upsettable memher from the recess 38 to gravitate through the opening 48 into the recess 15. Asheretofore explained, when the anvil 4 is in its retracted position, the spring I'l urges the halves 1 and 8 of the anvil 4 apart to enlarge the recess 15 to insure that slight variations in alignment between the slot 38 and the recess IE will not prevent the upsettable member 26 from gravitating into the recess l5. As the anvil 4 moves to its leftward or active position, the stop 3'l moves away from the abutment 35 to permit the spring 28 to move the member 24 to the left to place the slot 38 in position to receive another upsettable member 26.

An alternative form of construction for transferring an upsettable member from the chute l9 to the anvil 4 is disclosed in Fig. 2. The anvil 4 is of the same construction as that disclosed in Fig. 1, with the exception that the recess 45 for receiving the upsettable member is of a slightly different configuration, being adapted for the particular form of upsettable member 48 illustrated in Fig. 2. V

A feeding body 41 is provided, having a laterally extending bore .48 in which is disposed a reciprocating member 49 corresponding to the member 2.4 of Fig. 1. The bore 48 issealed at the right end with a plug 50, and a spring 5! within the bore 48 bears against the plug 50 and the member 49 to urge the member 49 to the left. An abutment 52 projects downwardly from the member 49 through a longitudinal slot 53 in the bottom of the feeding body 41. Projecting upwardly from the anvil 4 is a stop 54 positioned to engage the abuts ment 52 whenthe anvil is in its retracted position to move the member 49 to the left against the action of the spring 5|.

As shown particularly in Fig. 2, the anvil 4 is in its retracted position, and the stop 54 is holding the member 49 to the right through the abutment 52. Also, an upsettable member 45 has gravitated down through the chute i9 into the recess45. As the arm 5 moves the anvil 4 to the left toward its active position, the stop 54 moves away from the stop 52 to permit the spring 5| to urge the member 49 to the left and to clamp an upsettable member gravitated from the chute I9 into the recess 55 against a shoulder 55. It will be observed that the upsettable member 46 disposed in the recess 45 prevents further downward movement on the part of any of the upsettable members in the chute l9 and the recess 55. After the anvil 4 has moved to its active position and the upsettable member 48 has been upset and removed from the recess 45, the anvil 4 is returned to the position shown in Fig. 2. As soon as the stop 54 strikes the abutment 52 to move the member 49 to the right against the action of the spring 5!, the upsettable member clamped against the shoulder 55 is released and gravitates into the slot 45, and another upsettable member is supported opposite the shoulder 56 to be clamped thereagainst by the member 49 when the anvil 4 is again moved toward its active position.

It will be understood from the foregoing description that the forms of the invention which we have disclosed are merely examples of the general principle disclosed and claimed and further that the rivet selecting mechanisms may have utility in other riveting machines than those specifically disclosed.

Having thus described our invention, what we desire to secure by Letters Patent and claim is:

1. In a machine of the character described, for association with a riveting set, a laterally movable anvil having a receiving recess, one side of said recess being relatively movable laterally with respect to the opposite side of said recess, means normally resiliently urging said recess sides apart into predetermined spaced relation, means to feed an upsettable member into said receiving recess while the opposed sides thereof are in predetermined spaced relation, means to overcome said resilient means to move said opposed recess sides together to align the upsettable member therein with respect to said set, and means to move said anvil into cooperating relation with said set.

2. In a machine of the character described, for association with a riveting set, a laterally movable anvil having a receiving recess, one side of said recess being relatively movable with respect to the opposite side of said recess, means normally resiliently urging said recess sides apart into predetermined spaced relation, means to feed 1 an upsettable member into said receiving recess while the opposed sides thereof are in predeter mined spaced relation, means to overcome said resilient means after a predetermined movement of said anvil to move said opposed recess sides together to align the upsettable member therein with respect to said set, and means to move said anvil into cooperating relation with said set.

3. In a machine of the character described, for association with a riveting set, a laterally movable anvil, a. feeding body disposed above and at the end of the path of movement of said anvil away from said set, a passage in said feeding body, a member reciprocable in said passage, 2. recess in said member, a recess in said body, said last namcd IQSs communicating with a source of supply of upsettable members and with said passage, said member being arranged in one position thereof to prevent the movement of upsettable members into said passage from said recess in said body, and in another position thereof to receive in the recess in said member an upsettable member from the recess in said body, said recess in said member directing the upsettable member therein onto said anvil when said member is in a predetermined position in said passage, means to control the movement of said member with respect to the movement of said anvil, whereby when said anvil is in a predetermined position away from said rivet set it receives from said recess in said member an upsettable member, and means to move said anvil alternately into cooperating relation with said feeding means and into cooperating relation with said set.

4. In a machine of the character described, for association with a riveting set, a laterally movable anvil, a feeding body disposed above the path of movement of said anvil and at the end thereof away from said set, a passage in said body, a reciprocable member in said passage, a recess in said body communicating with a source of upsettable members and with said passage to feed upsettable members into said passage, a feeding opening in said body communicating with said passage and disposed on the opposite side of said passage from said recess and in alignment therewith, said reciprocable member being normally arranged at one side of said feeding opening, a stop at the opposite side of said feeding opening, means to urge said reciprocable member against an upsettable member in said passage against said stop to clamp the same thereagainst, means to move said reciprocable member to release an upsettable member to permit the same to gravitate onto said anvil when said anvil is disposed in a predetermined relation with respect to said feeding opening, and means to move said anvil alternately into said last named predetermined relation and into cooperating relation with said set.

5. In a machine of the character described, for association with a riveting set, a laterally movable anvil, a feeding body disposed above and at the end of the path of movement of said anvil away from said set, a passage in said feeding body, a member reciprocable in said passage, a recess in said member, a recess in said body, said last named recess communicating with a source of supply of upsettable members and with said passage, said member being arranged in one position thereof to prevent the movement of upsettable members into said passage from said recess in said body, and in another position thereof to receive in the recess in said member an upsettable member from the recess in said body, said recess in said member directing the upsettable member therein onto said anvil when said member is in a predetermined position in said passage, means to control the movement of said member with respect to the movement of said anvil, whereby when said anvil is in a predetermined position away from said rivet set it receives from said recess in said member an upsettable member, and means to move said anvil alternately into cooperating relation with said feeding means and into cooperating relation with said set, yieldable means bearing against said member to urge the recess therein into alignment with the recess in said body, an abutment connected to said member, a stop connected to said anvil moving means, said abutment projecting into the path of movement of said stop, whereby when said stop engages said abutment said member is moved against the action of said yieldable means to move the recess therein to direct an upsettable member therein onto said anvil.

6. In a machine of the character described, for association with a riveting set, a laterally movable anvil, a feeding body disposed above the path of movement of said anvil and at the end thereof away from said set, a passage in said body, a reciprocable member in said passage, a recess in said body communicating with a source of upsettable members and with said passage to feed upsettable members into said passage, a feeding opening in said body communicating with said passage and disposed on the opposite side of said passage from said recess and in alignment therewith, said reciprocable member being normally arranged at one side of said feeding opening, a stop at the opposite end of said feeding opening, means to move said anvil alternately from feeding position into cooperating relation with said set, yieldable means to urge said reciprocable member against an upsettable member in said passage against said stop to clamp the same thereagainst, an abutment connected to said reciprocable member, a stop projecting from said anvil moving member, said abutment projecting into the path of movement of said stop, whereby when said stop engages said abutment said reciprocable member is moved against the action of said yieldable means to release the upsettable member clamped against said first named stop to permit the upsettable member to gravitate onto said anvil.

7. In a machine of the character described, for association with a riveting set, a laterally movable anvil, reciprocable means for feeding each upsettable member onto said anvil while at one side of said set, reciprocable means to move said anvil into cooperating relation with said set, and a connection between said anvil moving means and said reciprocable feeding means for controlling the movement of said reciprocable feeding means; said connection comprising an abutment operatively associated with said reciprocable means, and a stop on said anvil moving means, said abutment projecting into the path of movement of said stop for effecting an actuation of said reciprocable feeding means.

8. In a machine of the character described, for association with a riveting set, a laterally movable anvil, reciprocable means to feed an upsettable member onto said anvil while on one side of said set, resilient. means urging said reciprocable means in one direction, reciprocable means to move said anvil into cooperating relation with said set, and an abutment projecting from said reciprocable feeding means into the path of said anvil moving means for engagement thereby for overcoming the action of said resilient means at predetermined times with respect to the position of said anvil moving means for effecting an actuation of said reciprocable feeding means.

9. In a machine of the character described, for association with a riveting set, a laterally movable anvil, means to move said anvil into and out of cooperating relation with said set, and

.means to feed an upsettable member onto said anvil while it is out of cooperating relation with said set, said means comprising a laterallymovable rivet holder, a rivet source, said rivet holder in one position receiving a rivet from said source and in another position transferring said received rivet to said anvil, and an operative connection between said anvil moving means and said rivet holder for moving said rivet holder into rivet feeding position.

10. In a machine of the character described, for association with a riveting set, a laterally movable anvil, means to move said anvil into and out of cooperating relation with said set, and means to feed an upsettable member onto said anvil while it is out of cooperating relation with said set, said means comprising a source of upsettable members, a chamber, said source communicating with said chamber, a. laterally slidable carrier in said chamber, said carrier having an opening for receiving an upsettable member from said source, said chamber having an opening in the bottom thereof spaced laterally from said source, and an operative connection between said anvil moving means and said carrier for moving said carrier to drop an upsettable memher through said last named opening in said chamber. onto said anvil.

11. A machine of the character described, comprising a laterally movable anvil, a set, means to operate said set, means to move said anvil into and out of cooperating relation with said set, and means to feed an upsettable member onto said anvil while it is out of cooperating relation with said set, said means comprising a source of upsettable members, a chamber, said source communicating with said chamber, a bar slidable-in said chamber, said bar having an opening therein for receiving an upsettable member dropped from said source, an opening in the bottom of said chamber laterally spaced from the point of communication of said source with said chamber, means operable when said anvil reaches its fully retracted position to move said carrier to drop a rivet through said opening in the bottom of said chamber onto said anvil, and resilient means to return said bar to its original upsettable member receiving position.

12. In a machine of the character described, for association with a riveting set, a laterally movable anvil, reoiprocable means for feeding each upsettable member onto said anvil while at one side of said set, reoiprocable means to move said anvil into co-operating relation with said set, and a connection between said anvil moving means and said reoiprocable feeding means for controlling the movement of said reoiprocable feeding means, said connection comprising an abutment on said reoiprocable means, and a stop on said anvil moving means, said abutment projecting into the path of movement of said stop for efiecting an actuation of said reoiprocable feeding means. I

LOYD A. WARD. EBEN D. TAYLOR.

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