US1791257A

US1791257A - Spring-nesting mechanism for coiling machines

Info

Publication number: US1791257A
Application number: US337758A
Authority: US
Inventors: Corban H Ziler
Original assignee: LA Young Spring and Wire Corp
Current assignee: LA Young Spring and Wire Corp
Priority date: 1929-02-06
Filing date: 1929-02-06
Publication date: 1931-02-03
Anticipated expiration: 1948-02-03

Description

Feb. 3, 1931. c. H. ZILER SPRING NESTING MECHANISM FOR COILING' IACHINES 2 Sheets-Sheet 1 Filed Fob. s, 1929 '11v VEMTOR florid/7 /7. [1/61 WZ$RNE S5 nlululn 2 Sheets-Sheet 2 C. H. ZILER SPRING NESTING MECHANISM FOR COILING IACHINES Filed Feb. 6, 1929 INVENTOR (arm/7 hf Zi/er gyfw ATTQRNEY5 Iii-II! Feb. 3,1931.

Patented Feb. 3, 1931 UNITED STATES PATENT OFFICE CORBAN H. ZILER, F CARTHAGE, lv'IISSOURI, ASSIGNOE 'IO L. A. YOUNG SPRING AND WIRE CORPORATION, OF DETROIT, MICHIGAN SPRING-NESTING MECHANISM FOR GOILING MACHINES Application fil-ed February 6, 1929. h semu No. 337,758.

The main objects of this invention are:

First, to provide a mechanism adapted for use in combination with spring-coiling machines which automatically nests the springs as they are delivered from the coiling machine. 7

Second, to provide a mechanism having these advantages which may be added as an attachment to coiling machines of a type now very extensively used.

Third, to provide a nesting mechanism for coiling machines in which the parts are so constructed and arranged that the wear and strain thereon is relatively slight.

Fourth, to provide a mechanism whichis of large capacity and may be readily adjusted to the speed of the coiling machine.

Objects pertaining to details and economies of my invention will definitely appear from the description to follow. The invention is defined in the claims.

A structure which embodies the features of my invention is clearlyillustrated in the accompanying drawing in which:

Fig. 1 is a side elevation: of a coiling machine embodying the features of my invention; I

Fig. 2 is a fragmentary elevation looking from the right of Fig. 1, parts being shown in vertical section;

Fig. 3 is a fragmentary perspective view the nesting mechanism;

Fig. 1 is a detail view partially in vertical section showing further details of the nesting mechanism; and

Fig. 5 is a detail view partially in sec tion on the broken line 5-5 of Fig. 1.

In the accompanying drawing, 1. .d-esignates the coiling mechanism generally, and as the details of this mechani-sni form no part of my present invention they are not described herein. It will be understood that my improvements are capable of embodim-ent in certain standard and extensively used types of machine adapted for the coiling of helically coiled springs such as are employed in spring-seat cushions, beds, and the like.

The coiled springs 2 are projected transversely from the coiling mechanism as they are formed and are engaged by the transfer or nesting jaws 12 substantially simultaneouslywvith the severing thereof from the stock from which they are formed indicated at 3.

The springs are projected over a segmentally curved support 4 which is pivoted on the rod 5 to swing from supporting position to allow'the formed springs to be swung downwardly by the transfer or nesting jaws. The support has a transverse slot 6 therein alined with the jaws. A chute 7 is positioned to receive the formed'springs, this chute having adjustable spring retaining members 8 mounted on its side walls. The springs are delivered below these retaining members and pushed along thereunder as successive springs are delivered to the nesting chute as indicated inthe drawings.

Transversely above this chute I mount a shaft 9 having an arm 10 carrying. a pivot 11 for the jaws 12 which have curved workengaging portions 13 and'terminate in the diverging tips 14. These jaws are not only free to swing on the pivot 11 but may move axially thereon, being urged to work-engaging position by the springs 15. One of the jaws is provided with a spring guide member 16. Stops or

thrust members

17 and 18 are mounted on one of the jaws to extend across the space between the jaws, thereby limiting the movement ofthe springs into the jaws. A pusher arm 19 projects from one of the jaws to engage the side of the spring. 7

The jaws are opened by the wedge-shaped cam 20 with which they are engagedby a relatively rearward swinging movement. The cam 20 is carried by the arm 10.

To swing the jaws on their pivot in proper timed relation with the rotation of their supporting

arm

10,1 provide

cams

21 and 22 which coact with the roller 23 on the link or pitman 24 pivoted at 25 to the jaws. This linkor pitman is provided with a longitudinal slot 26 through which the shaft 9 is arranged, thereby slidably supporting the link.

The cam 21 is shaped so as to swing the jaws forwardly with a quick movement to springengaging position, the jaws closing upon the (ill work as the roller passes over the point 27 of the cam. The work is carried forward by the jaws until it is delivered below the retaining members 8 and in nested relation to the springs previously delivered, the springs previously delivered being pushed along by the successive delivery of succeeding springs.

As the work reaches this delivery point the roller 23 comes into engagement with the cam 22. The engagement with this cam quickly moves the pitman or link 24: outward, moving the jaws backward on their pivot into engagement with the opening cam, thereby releasing the work in nested position.

To operate the support 4 in synchronism or proper timed relation to the aws, I provide the shaft 9 with a cam 28 which acts upon the lever 29 pivoted at 30 and connected by the link 31 to an arm 32 on the support 4. The shaft 9 is connected by suitable gearing indicated at 33 to the driving gear 34: of the coiling machine. A spring 35 holds the lever, 29 in engagement with the cam 28.

The springs are delivered by the nesting jaws to the spring-retaining members 8 which are mounted on the side walls of the chute 7, these members frictionally holding the spring so that as the successive springs are delivered, the coils of the spring delivered are pushed between the coils of the springs previously delivered, the delivery of successive springs pushing the previously delivered springs along in the holder and chute, with the result that they are very compactly nested.

My improved nesting mechanism very effectively and uniformly nests the coiled springs, is of large capacity, and. may be readily adapted to the speed of the coiling machine. There is the further advantage that it is simple and compact in structure.

I have illustrated and described my improvements in an embodiment which I have found very satisfactory. T have not attempted to illustrate and describe various modifications and adaptations which I contemplate as I believe this disclosure will enable those skilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. The combination with a spring coiling means, of a segmental transversely slotted pivotally mounted support over which the springs are projected by said spring coiling means, a nesting chute provided with spaced spring retainers disposed longitudinally of the chute, a shaft mounted transversely above said chute and provided with an arm carrying a jaw pivot at its outer end, coacting jaws mounted on said pivot for rocking and lateral movement thereon, springs mounted on said pivot acting to close said jaws, a wedgeshaped cam on said arm and with which said jaws are engaged and disengaged by the rocking movement of the jaws, a link slidably mounted on said shaft and pivotally connected to the outer ends of said jaws, said link being provided with a cam engaging roller, cams acting to reciprocate said link as the shaft is rotated thereby rocking said aws on their pivot, said cans being positioned so that the jaws engage the springs in coiling position and release them after they are delivered to said nesting chute below said retainers, and means for actuating said spring support in synchronism with the actuation of sain jaws comprising a pivoted lever, a cam on said shaft for actuating said lever, an arm on said support, and a link connecting said arm on said support to said lever.

2. The combination with a spring coiling means, of a segmental transversely slotted pivotally mounted support over which the springs are projected by said spring coiling means, a nesting chute provided with spaced spring retainers disposed longitudinally of the chute, a shaft mounted transversely above said chute and provided with an arm carrying a aw pivot at its outer end, coacting aws mounted on said pivot for rocking and lateral movement thereon, springs mounted on said 'pivot acting to close said jaws, wedgeshaped cam on said arm and with which said jaws are engaged and disengaged by the rocking movement of the jaws, a link slidably' mounted on said shaft and pivotally connected to the outer ends of said jaws, said link being provided with a cam engaging roller, cams acting to reciprocate said link as the shaft is rotated thereby rocking said jaws on their pivot, said cams being positioned so that the jaws engage the springs in coiling position and release them after they are delivered to said nesting chute below said retainers, and means for actuating said spring support in synchronism with the actuation of said jaws.

3. The combination of a nesting chute pro vided with spaced spring retainers disposed longitudinally of the chute, a shaft mounted transversely above said chute and provided with an arm carrying a aw pivot at its outer end, coacting jaws mounted on said pivot for rocking and lateral movement thereon, springs mounted on said pivot acting to close said jaws, a wedge-shaped cam on said arm and with which said jaws are engaged and disengaged by the rocking movement of the jaws, a link slida ly mounted on said shaft and pivotally connected to the outer ends of said jaws, said link being provided with a cam engaging roller, and cams acting to reciprocate said link as the shaft is rotated thereby rocking said jaws on their pivot, said cams being positioned so that the jaws engage the springs in coiling position and release them after they are delivered to said nesting chute below said retainers.

4. The combination of a nesting chute provided with spaced spring retainers disposed longitudinally of the chute, a shaft mounted transversely above said chute and provided with an arm carrying a jaw pivot at its outer end, coacting jaws mounted on said pivot for rocking and lateral movement thereon, springs mounted on said pivot acting to close said jaws, a wedge-shaped cam on said arm and with which said jaws are engaged and disengaged by the rocking movement of the jaws, a link slida-bly mounted on said shaft and pivotally connected to the outer ends of said jaws, said link being provided with a cam engaging roller, cams acting to reciprocate said link as the shaft is rotated thereby rocking said jaws on their pivot, said cams being positioned so that the jaws engage the springs in coiling position and release them after they are delivered to said nesting chute below said retainers, thrust members mounted on one of said jaws to overlap the other, and a pusher arm mounted on one of said jaws to project laterally therefrom.

5. The combination with a spring coiling means, of a movably mounted support to which the springs are delivered by said spring coiling means, a nesting chute, a shaft provided with an arm, coacting jaws pivotally mounted on said arm for opening and closing and rocking movement, springs acting to close said jaws, a jaw opening cam on said arm and with which the aws are engaged by the pivotal movement thereof, a link connected to said jaws and slidably supported by said shaft, cams acting on said link as the shaft is rotated to reciprocate the same and thereby rock said jaws, aspring thrust member mounted on one of said jaws, a pusher arm projecting laterally from one of said jaws to coact with a spring engaged by said jaws, and means for actuating said spring support in synchronism with said jaws.

6. The combination of a nesting chute, a shaft provided'with an arm, coacting jaws pivotally mounted on said arm for opening and closing and rocking movement, springs acting to close said aws, a aw opening cam on said arm and with which the jaws are engaged by the pivotal movement thereof, a link connected to said jaws and slidably supported by said. shaft, cams acting on said link as the shaft is rotated to reciprocate the same and thereby rock said jaws, a spring thrust member mounted on one of said aws, and a pusher arm projecting laterally from one of said jaws to coact with a spring engaged by said jaws.

7. The combination with a spring coiling means, of a movably mounted support to which the springs are delivered by said spring coiling means, a nesting chute, a shaft provided with an arm, coacting jaws pivotally mounted on said arm for opening and closing and rocking movement, springs acting to close said jaws, a jaw opening cam on said arm and with which. the jaws are engagedby the pivotal movement thereof, a link conn'ected to said jaws and slidably supported by said'shaft, cams acting on said link as the shaft is rotated to reciprocate the same and thereby rock said jaws, and means for actuating said spring support in synchronism with said jaws;

8. The combination of a nesting chute, a shaft provided with an arm, coacting jaws pivotally mounted on saidarm for opening and closing and rocking movement, {springs actingto close said jaws, a jaw opening cam on said arm and with which the jaws are engaged'by the pivotal movement thereof, a link connected to said jaws and slidablysupported by said shaft, and cams acting on said link as the shaft is rotated to reciprocate the same and thereby rock saidjaw's. 9.'The combination with a spring coiling means, of a pivotedsupport towhichthe springs-are delivered by saidcoiling means, a nesting chute, transferjaws acting to engage the springs while in coiling position and transferring the same to said chute, spring retaining members arranged in said chute, a spring pusher member movable with said jaws, and means for actuating said spring support synchronized with the said jaws so that the spring support is swung out of supporting position to permit the forward movement of the springs after engagement by the jaws.

10. The combination with a spring coiling means, of a nesting chute, transfer jaws acting to engage an intermediate coil of the springs while in coiling position and transfer the same to said chute, spring retaining members arranged in and disposed laterally of said chute to coact with the ends of the springs, and a spring pusher member projecting transversely of and movable with said aws.

11. The combination with a spring coiling means, of a movable support positioned to support the springs delivered by said coiling means, a nesting chute, a rotatable support, jaws pivotally mounted on said support, means for rocking said jaws on their pivot as the support is revolved, a spring pusher member carried by said jaws, and means for actuating said spring support in synchronism with the opening and closing of said aws.

12. The combination with a spring coiling means, of a nesting chute, a rotatable support, jaws pivotally mounted on said support, means forrocking said jaws on their pivot as the support is revolved, and a spring pusher member carried by said jaws.

13. In a structure of the class described, the combination of a nesting chute, a rotatable support, jaws pivotally mounted on said support, a cam means for swinging said jaws on their pivot brought into action by the rotation of said support, other cammeans for opening and closing said jaws brought into action by the swinging of said jaws on their pivot, and a pusher arm projecting lateraily from one of said jaws to engage a spring engaged by the jaws.

14:. In a structure of the class described, the combination of a nesting chute, a rotatable support, jaws pivotally mounted on said support, a cam means for swinging said jaws on their pivot brought into action by the rotation of said support, and other cam means for opening and closing said jaws brought into action by the swinging of said jaws on their pivot.

15. The combination with a spring coiling means, of a nesting chute, a rotatably mounted support, jaws pivotally mounted on said support, means for opening and closing said jaws brought into action by the swinging of the jaws on their pivot, and means for swinging said jaws on their pivot brought into action by the rotation of said arm.

In witness whereof I have hereunto set my hand.

CORBAN H. ZILER.