US2635767A

US2635767A - Coil handling apparatus

Info

Publication number: US2635767A
Application number: US169935A
Authority: US
Inventors: James S Burge; Richard M Goodwin; Hilton J Mckee
Original assignee: Motors Liquidation Co
Current assignee: Motors Liquidation Co
Priority date: 1947-03-11
Filing date: 1950-06-23
Publication date: 1953-04-21
Anticipated expiration: 1970-04-21

Description

A ril 21, 1953 J. 5. BURGE ETAL 2,635,767

COIL HANDLING APPARATUS Original Filed March ll 1947 4 Sheet s-Sheet 1 94;- w u i I40 /NVE'NTORJ 5% .f 4

$ AT OQNE Ks April 21, 1953 J. s. BURGE ET AL 5 COIL HANDLING APPARATUS Original Filed March 11, 1947 4 Sheets-Sheet 2 452i Arron/vars April 21, 1953- J. SJBURGE ETAL COIL HANDLING APPARATUS 4 Sheets-Sheet 3.

Original Filed March 11. 1947 Q I|||.\\ I||l llllll lllll l l i l .l

,April 21, 1953 J. S. BURGE ETAL COIL HANDLING APPARATUS Original F'iled March 11, 1947 'my e 4 Sheets-Sheet 4 //v VENTd Patented Apr. 21, 1953 COIL HANDLING APPARATUS James S. Burge and Richard M. Goodwin, Anderson, and Hilton J. McKee, Middletown, Ind., assignors to General Motors Corporation, Detroit, Mich., a corporation of Delaware Original application March 11, 1947, Serial No. 733,758. Divided and this application June 23, 1950, Serial No. 169,935

6 Claims.

This application is a division of application Ser. No. 733,758, filed March 11, 1947, which discloses a machine for winding a coil on one of a plurality of forms supported by a rotary conveyor or dial which is indexed to carry the coil to a taping station where tape is applied to the coil and to carry the taped coil to a station where it is ejected and is received by a stacking rack.

The object of the invention claimed in the present application is to provide for the stacking of a predetermined number of coils upon a stacking rack and for replacement automatically of a full rack by an empty one. To accomplish this, the machine provides a rotary conveyor or dial carrying a plurality of coil receiving racks, one of which is located in a position to receive coils as they are ejected from coil holders at the ejecting station and a mechanism for automatically indexing the stacking rack conveyor when the rack at the ejecting station has received a certain number of coils.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings wherein a preferred embodiment of the present invention is clearly shown.

In the drawings:

Fig. 1 is a fragmentary front view of the machine showing the coil stacker, the point in section being taken on line I-I of Fig. 2.

Fig. 2 is a view in the direction of arrow 2 of Fig. 1.

Fig, 3 is a fragmentary plan view of the machine showing the coil form dial and a portion of the coil ejector.

Fig. 4 is a plan view of the stacker rack dial and supporting frame looking in the direction of arrow 4 of Fig. 1.

Fig, 5 is a section view on line 5-5 of Fig. 4.

Fig. 6 is a perspective view of a stacking rack.

Fig. 7, drawn to a larger scale than Fig. 5, is a sectional view on line 'I--'I thereof.

Fig. 8 is a sectional view on line 8-8 of Fig. 7.

Fig. 9 is a front view of mechanism for operating the ejector and stacker.

Fig. 10 is a view on line I0I0 of Fi 9.

Referring to Figs. 9 and 10, a power driven gear I30 is connectible by a, clutch I with a shaft I34 which is connected with a sprocket I36 connected 5 by a chain I40 with a sprocket I4I connected with a shaft I42 which drives a stacker operating mechanism to be described. A coupling I41 connects gear I30 with a shaft I48 which drives a cam I53 engaging a roller I80 carried by a lever I8I pivoted on a bracket I 5911 and urged down by a spring I8 Ia and connected by an adjustable link I82 with a lever I83 fixed to a shaft I84 journalled in a bracket I85 attached to a bar I85a suspended from a table IOI.

Following the indexing of a dial D (Fig. 3) which carries coil forms and holders 350 successively to a winding station W, a taping station T and an ejecting station E, clutch I is tripped automatically as disclosed in application Ser. No. 733,758 to effect operation of a coil ejector to remove the coil from the form 350 at station E. The coil ejector comprises fingers 000 (Fig. 9) operated by shaft I journalled in bearings supported by housing 902 carried by bracket 903. Shaft 90I is connected by arm 904 and link I81 with arm I83 operated by shaft 908. Shafts I84 and 908 are connected by a torque-limiting

clutch comprising parts

905, 906 urged together by a spring 901. Clutch part 905 and bracket I85 support shaft 908 in alignment with shaft I84. If ejection of a coil at station E is abnormally resisted, the clutch part 908 will move right (Fig. 9) against the pressure of spring 901 to disconnect shaft 908 from shaft I84 and to cause flange 9 of clutch part 906 to operate a switch SW6 to cause the machine to stop as described in application Ser. No. 733,753.

The ejected coils fall around the detachable head 930 of a rack 93I (Fig, 6) having parallel rods 932 which support the head 930 and which are attached to

plates

933, 934 and 935. A tube 936 is attached to

plates

934 and 935 and plate 935 has a hole 931. There are eight of these racks or coil stackers 93I and they are supported by a dial 940 carrying pins 94I (Fig. 5) each of which is received by a tube 935, and studs 942 each of which is received by a hole 937 in the plate 935. In this way the racks 93f are located on the dial so that the noses 930a of the heads 930 face outwardly. Therefore, when a rack 93I arrives at the ejecting station its head 930 will be located so as to receive the coils as they are ejected.

Each rack 93I is intended to receive a predetermined number of coils. When the rack is full it is moved away from the ejecting station and an empty rack is brought to the ejecting station. The full rack is removed and replaced by an empty one. Therefore the dial 940 is caused to move intermittently after a predetermined number of operations of the machine. For this purpose the dial 940 is supported by a shaft 943 (Fig. 5) journaled in

bearings

944 and 945 supported by the cover 946 of a box 941.enc1osingthe dialpicks up a roller 952 carried by a lever 953' pivoted on a screw 954 and causes the lever to move to position 953. Lever 953 carries a pivot 955 for a pawl 956 engageable with a ratchet 95-? attached to shaft 943. plates 958 located above and below the ratchet 951 so that the ratchet may support the" pawl vertically. A spring 959 connecting the pawl 956 and the lever 953 urges the pawl toward the ratchet. The function of cam 95! is to move the pawl so that it will pick up a tooth on the ratchet. The movement of the ratchet clockwise is eifected by a spring 968 connecting the lever 953 with a screw 96! threaded through the box 941-and lockedin adjusted position by a nut 962. The spring 969efiects one-eighth revolution of the dial, motion of lever 953 clockwise being limited by a screw 9S3 attached to a bracket 964 and locked in adjusted position by a nut 9S5. Overtravel of the dial 94ii-is prevented by a lever 967 pivoted at 968 on a block 959 and which is caused to move into the position shown in Fig. 8 in order to receive the lower end of a pin 9M on the dial. This position of lever 95"! is effected by clockwisemovement of lever 953 which picks up a washer 919' surrounding a rod 915 passing througha hole in the lever 953 and causes said washer to push against a spring 9'52 and the latter against a-flange N3 of rod all and causes the rod to push against a pin 9M pivotally connecting the rod with lever'96l. Thus the lever 96'! is forced into blocking position by yielding pressure. Itsblocking position is indicated diagrammatically in Fig. 4. The rebounding of thedial D and pin 94! counterclockwise from the lever 96! is prevented by the engagement of another pin 94] witha lever M5 pivotally supported at 916 by a bracket 97'! and urged into rebound blocking position by a spring 918.

During counterclockwise movement of lever 953 by cam 95!,lever 953 engages a nut 989 locked on shaft 9-! l by a nut 93!. This is caused to move left (Figs. 7 and 8) to rotate lever 96! away from the'pin 9M so that the dial canturn again. The indexing of dial 940 into a new position starts before lever ear is moved again into position for blocking the next pin 94! which comes around. The timing between cam 95] and the main cam shaft Hi8 (Fig. 9) is such that the shaft I48 makes, for example, 60 revolutions for each revolution of cam shaft 959. Therefore the dial 940 indexes automatically whenever a rack at the ejecting .station receives, for ex-" ample, 60 coils. When the rack QSI is full and is removed from the turntable 9MB, its head 93!] is removed and stored at the machine. Removal of the head 930 exposes an eye 933a attached to plate 933. The full rack can be attached to a chain conveyor having a hook for engaging the eye 933a. I

While the embodimentof the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted.

What is claimed is as follows:

1. Coil handling apparatus for use with acoilwinding machine, said apparatus comprising a conveyor having holders for supporting coils, means for indexing the conveyor intermittently- The pawl 958 carries to move coils successively to an ejecting station, means at the ejecting station for removing the coil from its holder while at the ejecting station and allowing the coil to gravitate from the holder, a stacker dial, a'pluralityofvertically disposed racks supported by the stacker dial and which are positioned by the indexing of the stacker 'dial successively in alignment with the coil ejector to receive the coil which gravitates from the coil-holder, a stacker dial indexer, a mechanism functioning in response to completion of indexing the conveyor to operate the coil ejector and means operated by said mechanism for causing operation of the stacker dial indexer after a certain number of operations of the coil ejector.

2. A machine according to claim 1 in which the stacker dial indexer is operated by a spring, and in which a rotary cam is driven by the ejector operating mechanism at reduced speed so that it rotates once duringace'rtain number of ejector operations'and in which the cam operates during one revolution to stress the spring and then release it.

3. A stacker comprising a conveyor for supporting racks which receive articles ejected from a machine which produces them, means for indexing the conveyor and comprising a rotatable ratchet, a pawl, spring means for causing the pawl to contact the ratchet, a cam follower connected with the pawl, an operating shaft, a cam driven thereby and engageable with the follower and contoured to move the pawl back along the ratchet to a ratchet-tooth engaging position and then to move away from the path of movement of the follower, anda spring connected with the follower, said spring being stressed during operation of the'cam to back the pawl and being released when the cam leaves the follower to effect movement of the pawl to rotate the ratchet.

4. A stacker according to claim 3 in which the' conveyor is provided with a series of equally spaced stop members projecting therefrom, a stop element supported for movement into and out of the path of movement of a conveyor stop member and means connected with the follower for causing the stop element to move into the out of the path of movement of a conveyor stop member and means connected with the follower for causing the stop element to move into the path of movement of a conveyor stop member as the pawl closely-approaches the end of its ratchet turning movement, said means providing a-lost motion connection to allow the stop element to remain in said position until the pawl approaches closely to the end of itsback-up movement andmeans for preventing rebound of the-conveyor stop member from the stop element.

6. A stacker comprising two parallel shafts, a conveyor dial driven by one of the shafts and adapted to support racks which receive articles ejected from a machine which produces them, means for'driving the other shaft, a ratchet connected with the conveyor shaft, a lever, a pawl pivotally supported by the lever,-spring means" urging the pawl into contact with the ratchet, a cam follower carried by the lever, a cam connected with the driving shaft and engageable with the follower and contoured to move the pawl back along the ratchet to a ratchet-tooth engaglng position and then to move away from the path of movement of the follower, a spring connected with the lever, said spring bein stressed during back-up movement of the pawl and being released when the cam leaves the follower to,

cause the pawl to rotate the ratchet, a series of equally spaced stops projecting from the dial, a lever mounted for movement into and out of the path of movement of a stop, means for transmitting movement from the first lever to the second lever to cause the latter to move into the path of movement of a stop as the pawl closely approaches the end of its ratchet-turning movement and to cause the second lever to be retraced. from the stop as the pawl closely approaches the end of its back-up movement, a third lever mounted for movement into and out of the path of movement of a conveyor stop and a spring which urges the third lever into the path of movement of the conveyor stop, said third lever presenting to the conveyor stop a surface which the conveyor stop engages to cam the third lever away from its path of movement, said surface having length such that the stop leaves the surface as the stop strikes the second lever whereupon the spring last mentioned returns the third lever to normal position, said third lever having a surface which, when said lever is in normal position, is presented to the conveyor stop on the side thereof opposite to the side of the conveyor stop which engages the second lever.

JAMES S. BURGE.

RICHARD M. GOODWIN. HILTON J. MCKEE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,181,356 Chipman Nov. 28, 1939 2,350,273 Decker May 30, 1944 2,498,850 Corser Feb. 28, 1950 2,539,809 Buckley Jan. 30, 1951