US 12,252,356 B2
Method and system of producing coil springs
Bernd Walz, Pfullingen (DE); Frank Weiblen, Metzingen (DE); Stefan Fries, Reutlingen (DE); Michael Sosnowski, Reutlingen (DE); and Felix Meyer, Reutlingen (DE)
Assigned to WAFIOS Aktiengesellschaft, Reutlingen (DE)
Filed by WAFIOS Aktiengesellschaft, Reutlingen (DE)
Filed on Oct. 11, 2022, as Appl. No. 17/963,235.
Claims priority of application No. 102021211526.8 (DE), filed on Oct. 13, 2021.
Prior Publication US 2023/0114519 A1, Apr. 13, 2023
Int. Cl. B21F 3/02 (2006.01); B23Q 7/08 (2006.01); B65G 51/02 (2006.01)
CPC B65G 51/02 (2013.01) [B21F 3/02 (2013.01); B23Q 7/08 (2013.01); B65G 2201/0232 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of producing coil springs from wire comprising:
conveying wire from a wire reserve to a numerically controlled spring coiling machine;
successively forming portions of the wire in the spring coiling machine to coil springs in a forming operation;
severing each coil spring after the forming operation from the supplied wire; and
successively transporting severed coil springs through a pipeline of a pneumatic conveyor system into a spring receptacle of a downstream machine,
wherein the successively transporting comprises a collision-proof spring transfer comprising continuously transferring coil springs from the pipeline through an exit opening of the pipeline into assigned spring receptacles, and automatically preventing re-entry of coil springs that have passed through the exit opening in the direction of the spring receptacle and rebound from the region of the spring receptacle back into the pipeline.