Workpiece detection device for cyclical machines

Details Workpiece detection device for cyclical machines Workpiece detection device for cyclical machines

1980-04-18

1982-01-05

Larson, Lowell A.

Metal deforming

With randomly-actuated stopping

Responsive to condition of work or product

72426, 192125A, B21J 920

Patent

active

043087345

ABSTRACT:
A detection device for positively sensing the ejection of a workpiece from a cyclically operating machine after each operating cycle assuring that no malfunction has occurred, enabling initiation of the next cycle. The device includes a chute having a pivotally mounted section in the floor of the chute which is moveable between a normally raised position and an actuated or lowered position responsive to the weight of an ejected workpiece thereon. Means are provided for sensing the actuated position of the moveable section and conveying a signal to the central control circuit of the machine. The central control circuit of the machine is programmed to prevent further operation if a signal is not received.

REFERENCES:
patent: 1696659 (1928-12-01), Ward
patent: 1698888 (1929-01-01), Laxo
patent: 1818593 (1931-08-01), Walworth
patent: 2369298 (1945-02-01), Jongedyk
patent: 3179764 (1965-04-01), Wintriss
patent: 3656139 (1972-04-01), Wintriss

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