Press transfer bar

Details Press transfer bar Press transfer bar

2000-03-21

2001-11-27

Underwood, Donald W. (Department: 3652)

Material or article handling

Load carried along a horizontal linear path

Having gripper means

C072S405130, C072S405160, C198S468600

Reexamination Certificate

active

06322314

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The subject invention relates to work piece transfer assembly for a press including a reciprocating member and a series of longitudinally spaced in-line stations wherein each station is a further progression of a work piece forming process and, more specifically, to a mounting system for a finger which engages and moves the work piece.
2. Description of the Prior Art
Such work piece transfer assemblies usually include a transfer bar and a motion transmitting mechanism for moving the bar inward, outward, and longitudinally for transferring work pieces through the press. A finger is attached to the transfer bar for engaging and transferring work pieces through the press. Typical prior art assemblies are disclosed in U.S. Pat. No. 4,833,908 to Sofy et al; U.S. Pat. No. 4,852,381 and U.S. Pat. No. 4,895,013, both to Sofy, the inventor herein, and U.S. Pat. No. 5,074,141 to Takeuchi.
An objective in the construction of such fingers is that they provide the requisite strength yet remain light in weight.
SUMMARY OF THE INVENTION AND ADVANTAGES
Accordingly, the subject invention provides the requisite strength and light in weight. The invention is implemented in a work piece transfer assembly for a press including a reciprocating member and a series of longitudinally spaced in-line stations wherein each station is a further progression of a work piece forming process. The assembly in which the invention is implemented comprises a transfer bar, a motion transmitting mechanism for moving the bar inward, outward, and longitudinally for transferring work pieces through the press, and a finger for attachment to the transfer bar for engaging and transferring work pieces through the press. The assembly is characterized by a shank fastener extending downwardly through said transfer bar and including threads to threadedly engage the finger for attaching the finger to the transfer bar to extend in a cantilevered fashion to a distal end.


REFERENCES:
patent: 3757961 (1973-09-01), Jacobs
patent: 4012938 (1977-03-01), Brandstrom
patent: 4398408 (1983-08-01), Wisebaker et al.
patent: 4852381 (1989-08-01), Sofy
patent: 4895013 (1990-01-01), Sofy
patent: 5074141 (1991-12-01), Takeuchi
patent: 5771561 (1998-06-01), Hofele

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