Device for withdrawing and unloading crop-ends of metal bars fro

Details Device for withdrawing and unloading crop-ends of metal bars fro Device for withdrawing and unloading crop-ends of metal bars fro

1985-05-15

1986-12-09

Spar, Robert J.

Material or article handling

Stock pulling or pushing

With fluid pressure actuated pushing or pulling means

294116, 294 88, 414226, 414753, B23Q 522

Patent

active

046277790

ABSTRACT:
A device for withdrawing from a bar pusher and thereafter unloading the crop-ends of metal bars in a bar feeding apparatus for a multi-spindle lathe, the device being suitable also for placing a new bar on the bar pusher, is disclosed; the device of the invention is comprised essentially of a pair of movable jaws which by a turning movement close onto the crop-end of a metal bar and lock the crop-end therebetween; the crop-end is the residual part of the lathe machining of the metal bar; thereafter the jaws accomplish a translation movement to detach the crop-end from a bar pusher which formerly caused the bar forwarding in the feeding apparatus of the lathe; the jaws thereafter open slowly dropping the crop-end in a proper unloading zone; finally the jaws close onto a new metal bar to be machined and, by a further translation movement in the direction opposite to the former one, perform the insertion of the new metal bar end into the bar pusher.

REFERENCES:
patent: 3545804 (1970-12-01), Richner
patent: 4343590 (1982-08-01), D'Aloisio
patent: 4352615 (1982-10-01), Neukomm
patent: 4463635 (1984-08-01), Hafla et al.

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