Forging machine transfer with misalignment detector

Details Forging machine transfer with misalignment detector Forging machine transfer with misalignment detector

1983-10-06

1985-10-29

Larson, Lowell A.

Metal deforming

With means to handle work or product

By gripper and/or endless chain

72405, 901 34, 269254R, B21J 1310

Patent

active

045494258

ABSTRACT:
A misalignment detector for forging machine transfers is disclosed. Such transfers provide grippers which move from a first position in which workpieces are not present to a second position when a workpiece is properly gripped. If a misaligned workpiece is present, the gripper moves to a third position beyond the second position. Each of the embodiments provides a beam-type spring mounted for deflection as the associated gripper or grippers move between the three positions. In some embodiments, the spring is bent as a function of the relative position of two opposed grippers and in other embodiments a spring is associated with a single gripper and is bent as a function of the gripper position. In some embodiments, strain gauges are mounted on the springs to produce a modulated signal to indicate the gripper position and operate the machine's emergency stop if necessary. In one embodiment, the spring is associated with a pneumatic system and allows a bleed orifice to open when misalignment is present. Opening of the bleed orifices creates a pressure drop and actuates a signal generating switch.

REFERENCES:
patent: 3165766 (1965-01-01), Wisebaker
patent: 3466917 (1969-09-01), Eakin et al.
patent: 3656139 (1972-04-01), Wintriss
patent: 3797293 (1974-03-01), Paramonoff
patent: 3824674 (1974-07-01), Inoyama et al.
patent: 3965718 (1976-06-01), Kline
patent: 4132318 (1979-01-01), Wang et al.

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