US2015033A - Attaching machine - Google Patents

Description

Sept. 17, 1935, N. HAYDEN 2,@15,33

ATTACHING MACHINE Filed Feb. 14, 1934 4 Sheets-Sheet l Sept. W, 11935. N. HAYDEN ATTACHING MACHINE Filed Feb; 14, 1934 4 Sheets-Sheet 2 Invemifwz LESZEQKNHQ Sept. 17, 1935. N. HAYDEN 2,m5,33

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Sept. 17,1935. N. HAYDEN 2,;]l5,@33

ATTACHING' MACHINE Filed Feb. 14, 1934 4 Sheets-Sheet 4 LQJIWZ/ehi'o z: Les ierNHayden.

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UNITED STATES PATENT ()FFICE 2,015,033 ATTACHING MACHINE Lester N. Hayden, Arlington, Mass, assignor to United-Carr Fastener Corporation, Cambridge, Mass., a corporation of Massachu setts Application February 14, 1934, Serial No. 711,151

3 Claims.

My invention aims to. provide improvements in attaching machinesv particularly adapted for attaching snap fastener'members to their carrying mediums.

In the drawings which illustrate a preferred embodiment of my invention:-

Figure 1 is a side elevation of a portion of a machine embodying, my invention, unessential parts being omitted;

Fig. 2 is a plan view of the table and associated mechanism for presenting flexible discs between the fastener-attaching dies; 7

Fig. 3is a section taken on theline 3-3 of Fig. 2 to show a side elevation of the looking latch mechanism and cooperating parts;

Fig. 4 is an edge view of the table-actuating v mechanism as viewed from the right-hand side of Fig. 3;

Fig. 5 is a part side elevation and part section of the disc-carrying table, its supporting structure and the fastener-setting dies and associated parts prior to the'fastener parts being set; and

Fig. 61s a view of the same parts shown in Fig. 5 as they appear when the fastener parts are being attached to the fastener-carrying disc.

My invention, as illustrated by the annexed drawings, is particularly, though not exclusively, useful in connection with snap fastener-attaching machines like that illustrated and described in my United States Letters Patent No. 1,944,510, issued J anuary 23, 1934; In combination with this same type of machinelhave provided a rotating table which is particularly adapted for presenting small discs of flexible material such as rubber and the like between the attaching dies of the machine, so that the dies may attach a snap fastener member and an attaching member to the disc. Heretofore, these discs, which, incidentally, are used in the manufacture of overshoes, have been held between the attaching dies by the machine operator. Since the discs are relatively small many operators have had their fingers injured and therefore my invention makes it possible topresent the small discs between the atta'ching dies without endangering the fingers of the operator. In View of the fact that the particular" attaching machine, to which my invention has been applied, is clearly illustrated and described in my patent referred to above, I have shown only those portions of my attaching machine which are essential for a person skilled in the art to understand my invention. V

Referring now to the specific embodiment of my invention-illustrated by the drawings, 1 have shown-a pair of die-members l and 2- (Figs. 5 and 6) opposing each other and adapted to be brought together. 'In the structure illustrated the die member I is movable toward the stationary die member 2. Associated with the die member l is a pair of fastener-holding jaws 33 (Fig. 1) with '5 their free ends opposite the end of a track & along which fastener studs 5, or other suitable members, are moved to the jaw members 33. The fixed die member 2 initially supports an attaching member 6 which is adapted to be moved 10 into. position along a track 1 associated with the die member 2, as. shown in Fig. 5.

My device forpresenting the flexible discs 8 between the dies I and 2 is preferably in the form of a rotating table 8 supported upon a plate I8 attached in any suitable manner to the frame ll of the attaching machine. This table 9 has a series of holes l2 extending therethrough and spaced equal distances apart adjacent to the pe-- riphery, as clearly shown in Fig. 2. Any suitable 2o mechanism may be used to rotate the table, but I prefer to provide an automatically operating mechanism preferably operable in-conjunotion with the mechanism which operates the setting die so that the table 9 may be moved in a step by step manner to present a flexible disc 8 between the setting dies I and- 2 at the proper time for the setting dies to attach the fastener parts. This table-operating mechanism is best illustrated by Figs. 2, 3 and 4 and includes a toothed disc I3 secured to the under side ofthe'table 9 and rotatable therewith. A slide bar M is mounted for sliding movement in the plate l9 and is operated by a cam l5 (Fig. 1) mounted on the main drive shaft It of the machine. This cam operates a 3 bell crank 57 having a cam roll l8 at one end thereof contacting with the cam l5 and connected at the other'end by a link l9 directly with the slide bar M. In order that the movement of the slide bar M may actuate the table 9, I have provided an arm 221 pivoted directly to the slide bar and having a hook-shaped end portion 2i adapted to'engage a notch 22 in the disc l3, as clearly illustrated in Fig. 2. To prevent'movement of the table 5 during the fastener setting operation I have provided a locking latch'member 23 pivoted to the supporting plate it and having a latch portion 24 at one end adapted to engage a notch 22 in the disc I3, as shown in Fig. '2. The other end of the locking latch is shaped to provide a cam surface 25 in the path of a cam roll 26 carried by the slide bar It so that the latch portion 24 may be moved out of engagement with the notch 22 when it is desirable to move another disc 8 into the pathof'the setting dies.

The operation of that much of the machine relating to my invention may be described briefly as follows. If we assume that the fastener stud 5 and attaching member 6 are in the positions to be attached to the flexible disc 8 and the other parts are as illustrated in Figs. 1, 2 and 5, the operation of the machine will be as follows. The upper die I will be moved toward the lower die 2 and during this movement the fastener stud 5 will be picked from the fastener-holding jaws 33 and carried downwardly against the flexible carrying disc 8 which in turn will be forced from the supporting shoulder 21 through the aperture l2 and against the shank of the attaching member 6, as illustrated in Fig. 6. In this manner the parts are assembled together against the setting die 2 and thereafter as the setting die I moves upwardly again another attaching member is moved along the track I to the die 2, as shown in Fig. 5. During this operation the assembled parts are pushed off of the die member 2. As the die member I fully returns to the position shown in Fig. 5, another snap fastener member 5 is moved into position between the fastener-holding jaws 3-3. Thereafter the cam l5 (Fig. 1) rotates and through the bell crank I! and link l9 moves the slide bar I4 toward the right, as viewed in Fig. 2. As the slide bar moves toward the right the cam roll 26 engages the cam surface 25 of the locking latch 23 and moves it about its pivot 28 thereby withdrawing the latch 24 from the notch 22. During this latch lock releasing operation the arm 28 is moved forward and the spring 29 pulls the hook-shaped end of the arm 2i into the notch 22. As the slide bar l4 continues its movement, the table 9 is rotated a suflicient distance to bring the next aperture [2 and flexible fastener-carrying disc 8 into the path of the die members I and 2. Then the fastener member 5 and attaching member 6 are secured to the disc 8 as heretofore described. It should be noted that about the time the table has been rotated to bring the next disc into position the spring 3| will pull the locking latch 24 into the next notch 22. This locking latch is also useful to hold the table 9 against rotation during the return stroke of the slide bar I4 in order to prevent the arm 20 pulling back on the table during its release from a notch 22. Furthermore, in order to prevent the cam roll 26 from displacing the locking latch 24 during the return stroke of the slide bar I4, I have hinged the cam end of the locking latch, as clearly shown in Figs. 2 and 3. The hinged portion 32 is normally pressed toward the slide bar l4 by the spring 33 and may be moved about its pivot without disengaging the latch 24 because of the tapered cam surface 34 against which the cam roll 26 may strike during the return movement. In order that the hook end 2| of the arm 20 may be held in position where it will engage the next notch 22, I have provided a pin 35 (Fig. 2) against which the arm 2| strikes, so that the spring 29 will hold the arm 20 in the proper position.

My invention is particularly useful in connection with the attaching of snap fastener members to thin, flexible discs and like small fastenercarrying members because the carrying members can be placed in the apertures I2 to rest upon the shoulders 21 at a point remote the setting dies 1 and 2 and then the table 9 may be rotated in a step by step manner to bring the discs 8, one at a time, between the setting dies at a point relatively remote from the fingers of the operator. The table and associated operating mechanism is simple, durable and without great expense or trouble can be adapted to at-' taching machines already in service. Furthermore, this mechanism may be used with various 5 types of attaching machines.

While I have illustrated and described a preferred embodiment of my invention, I do not wish to be limited thereby, because the scope of my invention is best defined by the following claims.

I claim:

1. The combination of a pair of setting dies with a mechanism for placing a flexible disc between said dies for the attachment of a fastener member thereto, said mechanism comprising a rotating plate having an aperture therethrough adapted to receive a. flexible disc, and means operable to move said plate to present the aperture and flexible disc in the path between said dies whereby a part and an attaching member may be secured against opposite sides of said flexible disc, said means for operating said plate comprising a toothed disc associated with said plate, a slide bar movable relative to said plate, an arm carried by said slide bar and adapted to engage the toothed disc and rotate the table upon a predetermined movement of the slide bar whereby the table is moved in a step by step manner to present each of the apertures and flexible discs between the setting dies and a locking latch pivotally mounted relative to said table and having a portion adapted to engage the toothed disc to lock the table against rotation during the setting operation of the dies and during the return movement of said slide bar, and cam means actuated by cooperating means on said slide bar during the operative movement of the slide bar to disengage the locking portion.

2. The combination of a pair of setting dies with a mechanism for placing a flexible disc be- 40 tween said dies for the attachment of a fastener member thereto, said mechanism comprising a rotating plate having an aperture therethrough adapted to receive a flexible disc, and means operable to move said plate to present the aperture and flexible disc in the path between said dies whereby a part and an attaching member may be secured against opposite sides of said flexible disc, said means for operating said plate comprising a toothed disc associated with said plate, a slide bar movable relative to said plate, and an arm carried by said slide bar and adapted to engage the toothed disc and rotate the table when the slide bar is moved in one direction whereby the table is moved in a step by step manner to present each of the apertures and flexible discs between the setting dies, and a locking latch pivotally mounted relative to the table and having a portion adapted to engage the toothed disc to lock the table against rotation during the set- 0 ting operation of the dies, a cam portion at the other end of the latch member in the path of the slide bar, and a cam roll carried by the slide bar and adapted to operate the cam of the latch member to disengage the tooth-engaging portion 5' when the slide bar is moving to rotate the table thereby to permit rotation of the table, and the cam portion of said latch being hinged for vertical movement relative to said slide bar and having a cam surface at its under side so arranged that when the slide bar is returned to its original position the hinged portion will be raised by said cam roll, thereby permitting the toothengaging portion to remain in locked position.

3. A mechanism for presenting parts between a pair of setting dies comprising, in combination, 7

a rotating table having means for carrying parts between said dies, a slide bar mounted for reciprocating movement, a toothed disc associated with said table, an arm mounted on said slide bar and adapted to engage said toothed disc to rotate the table upon a movement in one direction of said slide bar, a locking latch pivotally mounted relative to said table and having a portion urged by a spring and adapted to engage said toothed disc during the setting operation of the dies, the other end of said locking latch being hinged for vertical movement relative to said slide bar and having a cam surface located in the path thereof, a cam roll mounted on said slide bar and adapted to actuate said cam surface to disengage said locking portion from said disc to permit rotation of said table during the operative movement of said slide bar, and said hinged portion having an additional cam surface at the side adjacent to said slide bar whereby in the inoperative movement of said slide bar the cam r011 acts upon the said cam surface to raise the hinged portion, thereby permitting the locking 10 portion to remain in engagement with said toothed disc.

LESTER N. HAYDEN.

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