Wire twisting device for use in a reinforcement binding machine

Details Wire twisting device for use in a reinforcement binding machine Wire twisting device for use in a reinforcement binding machine

1998-06-16

1999-09-28

Hail, III, Joseph J.

Metal deforming

By use of tool acting during relative rotation between tool...

Tool orbiting or rotating about an axis

72 57, B21F 700

Patent

active

059569891

ABSTRACT:
For use in a reinforcement binding machine, a wire twisting device is disclosed in which the stroke thereof is extended and the reliability of the operation thereof is thereby improved. A compression spring 34 and a flanged pin 35 which is mounted on a screw shaft 32 are inserted into a cylinder portion 33a formed in the rear end face of a shaft 33 provided in a wire twisting device 31, and the screw shaft 32 and shaft 33 are connected together by a removal prevention ring 36. The shaft 33 is structured such that it is free to rotate and can be moved back and forth in the axial length range of the flange pin 35. A pair of hook levers 39 are pivotally mounted on the front portion of a sleeve 38 connected to a sleeve nut 37, and the guide grooves 39a of the hook levers 39 are respectively engaged with a guide pin 41 provided in the front portion of the shaft 33. As the sleeve 38 is moved forward, the shaft 33 is also moved forward by a given distance, while the hook levers 39 are respectively moved forward by a given distance with the spread-open state thereof remaining unchanged and, subsequently, the hook levers 39 are switched into their closing operations, which makes it possible to expand the wire holdable range of the wire twisting device.

REFERENCES:
patent: 3786841 (1974-01-01), Albrecht et al.
patent: 4117872 (1978-10-01), Gott et al.
patent: 4160469 (1979-07-01), Joannic
patent: 4865087 (1989-09-01), Geiger
patent: 5020355 (1991-06-01), Payne et al.
patent: 5279336 (1994-01-01), Kusakari et al.

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