Method and device for the clocked transport of workpieces or workpiece carriers in transfer lines or transfer machines

摘要

PCT No. PCT/EP94/00940 Sec. 371 Date Dec. 16, 1994 Sec. 102(e) Date Dec. 16, 1994 PCT Filed Mar. 24, 1994 PCT Pub. No. WO94/23893 PCT Pub. Date Oct. 27, 1994The novel process and device makes it possible to construct linear transfer installations without a special return transport system for workpieces or workpiece carriers, to keep the number of circulating workpieces or workpiece carriers to a minimum, and to increase or reduce the number of stations in the transfer installation in an arbitrary manner. The invention consists of organizing a flow of parts via an arbitrary number of successive stations by the alternating transfer in pairs between respective adjacent stations so that, as a result, a forward as well as a return movement of workpieces or workpiece carriers is produced. For this purpose, dumbbell-type double transfer devices are used between all stations, and alternate of the transfer devices are operated simultaneously to transfer the workpieces.