Metal deforming – By deflecting successively-presented portions of work during... – With use of means to remove product from deflector
Reexamination Certificate
2001-01-03
2002-08-13
Larson, Lowell A. (Department: 3725)
Metal deforming
By deflecting successively-presented portions of work during...
With use of means to remove product from deflector
C140S0030CA
Reexamination Certificate
active
06430982
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates generally to machines for forming coil springs and delivering such coil springs to a coil spring assembling machine in which the coil springs are laced or otherwise connected together to form a coil spring assembly. In such combined machinery, a coil spring forming machine individually delivers the formed coiled springs to a transfer conveyor which, in turn, delivers the coil springs to a transfer apparatus which, in turn, delivers the coil springs to the coil spring assembling machine to form the coil spring assembly.
Attention is directed to the following U.S. Patents:
U.S. Pat. No. 4,014,371 (Walker) issued Mar. 29, 1977
U.S. Pat. No. 4,413,659 (Zangerle) issued Nov. 8, 1983
U.S. Pat. No. 4,492,298 (Zapletal et al.) issued Jan. 8, 1985
U.S. Pat. No. 5,477,893 (Wentzek et al.) issued Dec. 26, 1995
U.S. Pat. No. 5,579,810 (Ramsey et al.) issued Dec. 3, 1996
Attention is also directed to a prior brochure which is entitled “Announcing the World's Fastest, Most Advanced Pocket Spring Technology” and which was circulated by Elfex International Limited of Pickering, Ontario LlW1Z9 Canada.
SUMMARY OF THE INVENTION
The invention provides a coil spring forming machine and transfer conveyor assembly comprising a transfer conveyor operable through a succession of operational cycles and including an endless conveyor assembly arranged for periodic travel along a predetermined path and through a coil spring loading station, and a conveyor driving device drivingly connected to the conveyor assembly and operative, upon each energization thereof, to drive the conveyor assembly through one operational cycle thereof, a first coil spring forming machine located adjacent the predetermined path, operable through a succession of operational cycles to form coil springs, and, during a period of non-movement of the conveyor assembly, to load a coil spring on the conveyor assembly at the loading station, and including a first coil spring forming driving device operative, upon each energization thereof, to drive the first coil spring forming machine through one operational cycle thereof, a second coil spring forming machine located adjacent the predetermined path, operable through a succession of operational cycles to form coil springs, and, during a period of non-movement of the conveyor assembly, to load a coil spring on the conveyor assembly at the loading station, and including a second coil spring forming driving device operative, upon each energization thereof, to cause actuation of the second coil spring forming machine through one operational cycle thereof, and a control system operative to cause energization of the conveyor driving device in response to completion of one operational cycle of one of the first and second coil spring forming driving devices, and operative to cause energization of one of the first and second coil spring forming driving devices in response to completion of one operational cycle of the conveyor driving device.
The invention also provides a coil spring forming machine and transfer conveyor assembly comprising a transfer conveyor operable through a succession of operational cycles and including an endless conveyor assembly arranged for periodic travel along a predetermined path and for passage through a coil spring loading station, and a conveyor driving device drivingly connected to the conveyor assembly and operative, upon each energization thereof, to drive the conveyor assembly through one operational cycle thereof, a first coil spring forming machine located on one side of the predetermined path, operable through a succession of operational cycles to form a first coil spring, and, during a period of non-movement of the conveyor assembly, to load the first coil spring on the conveyor assembly in the loading station, and including a first coil spring forming driving device operative, upon each energization thereof, to drive the first coil spring forming machine through one operational cycle thereof, and a second coil spring forming machine located on the other side of the predetermined path, operable through a succession of operational cycles to form a second coil spring, and, during a period of non-movement of the conveyor assembly, to load the second coil spring on the conveyor assembly in the loading station, and including a second coil spring forming driving device operative, upon each energization thereof, to drive the second coil spring forming machine through one operational cycle thereof, and a control system operative to cause energization of the conveyor driving device through one operational cycle in response to completion of one operational cycle of both of the first and second coil spring forming driving devices, and operative to cause simultaneous energization of the first and second coil spring forming driving devices in response to completion of one operational cycle of the conveyor driving device.
The invention also provides a coil spring forming machine and transfer conveyor assembly comprising a transfer conveyor operable through a succession of operational cycles and including an endless conveyor assembly arranged for periodic travel along a predetermined path and for passage through a coil spring loading station, and a conveyor driving device drivingly connected to the conveyor assembly and operative, upon each energization thereof, to drive the conveyor assembly through one operational cycle thereof, a first coil spring forming machine located on one side of the predetermined path, operable through a succession of operational cycles to form a first coil spring, and, when one of the pallets is in the loading station and during a period of non-movement of the conveyor assembly, to load the first coil spring on the conveyor assembly in the loading station, and including a first coil spring forming driving device operative, upon each energization thereof, to drive the first coil spring forming machine through one operational cycle thereof, a second coil spring forming machine located on the other side of the predetermined path, operable through a succession of operational cycles to form a second coil spring, and, when the one pallet is in the loading station and during a period of non-movement of the conveyor assembly, to load the second coil spring on the conveyor assembly in the loading station, and including a second coil spring forming driving device operative, upon each energization thereof, to drive the second coil spring forming machine through one operational cycle thereof, and a control system operative to cause energization of the conveyor driving device through a first operational cycle in response to completion of one operational cycle of the first coil spring forming driving device, operative to cause energization of the second coil spring forming driving device in response to completion of the first operational cycle of the conveyor driving device, operative to cause energization of the conveyor driving device through a second operational cycle in response to completion of one operational cycle of the second coil spring forming driving device, and operative to cause energization of the first coil spring forming driving device in response to completion of the second operational cycle of the conveyor driving device.
The invention also provides a coil spring forming machine and transfer conveyor assembly comprising a transfer conveyor operable through a succession of operational cycles and including an endless conveyor assembly arranged for periodic travel along a predetermined path and through a coil spring loading station, and a conveyor driving device drivingly connected to the conveyor assembly and operative, upon each energization thereof, to drive the conveyor assembly through one operational cycle thereof, a coil spring forming machine located adjacent the predetermined path, operable through a succession of operational cycles to form a first coil spring, and, during a period of non-movement of the conveyor assembly, to load the first coil spring on the transfer conveyor, an
Andrea Michael E.
Hamill Stuart C.
Jaworski Wayne D.
Wentzek Horst F.
Boyle Fredrickson Newholm Stein & Gratz S.C.
Larson Lowell A.
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