Gravity-operated blank loading device

Details Gravity-operated blank loading device Gravity-operated blank loading device

1999-06-07

2000-07-11

Tolan, Ed

Metal deforming

With means to handle work or product

Including means to permit maneuvering of work or product at...

72361, 72709, B21J 1310

Patent

active

060855711

ABSTRACT:
A device is disclosed for loading and positioning a sheet metal blank between upper and lower tool members adapted to close and engage the blank for the purpose of preforming and heating it in preparation for a superplastic forming operation. The loading device comprises a supported horizontal shaft carrying a rotatable counterbalanced arm with a pad on the arm for use in positioning a corner or edge of the blank. In the operation of the device: (a) the arm is balanced with a suitable counterweight for initially supporting and positioning the blank between the open tools, (b) the arm and its pad rotates downwardly with the blank as the tools are closed drawing the blank between them, (c) the rotating arm and pad release the blank as it is withdrawn from their reach, and (d) the unloaded arm and pad are returned to their initial position by the counter balance.

REFERENCES:
patent: 4091938 (1978-05-01), Trolle
patent: 4474044 (1984-10-01), Leistner et al.
patent: 5148697 (1992-09-01), Shiraishi et al.
patent: 5423648 (1995-06-01), Akeel et al.

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