Mold protection device

Details Mold protection device Mold protection device

1984-03-29

1985-05-07

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425137, 425154, B29F 100

Patent

active

045155445

ABSTRACT:
Sensor arranged to detect the proper placement and quantity of one or more inserts in the cavity of an injection molding machine. The sensor is preferably formed of a spring-biased plunger through one of the cavity shells. A photodetector monitors the movement of the plunger as the cavity-forming shells are closed and activates an alarm signal if the plunger movement is excessive before detection of proper mold closure.

REFERENCES:
patent: 2801442 (1957-08-01), Moslo
patent: 3642402 (1972-02-01), Hutchinson et al.
patent: 3647309 (1972-03-01), Thompson
patent: 3726625 (1973-04-01), Rees
patent: 3825385 (1974-07-01), Sesto
patent: 4094621 (1978-06-01), Hehl
patent: 4412798 (1983-11-01), Avellino
IBM Technical Disclosure Bulletin, "Plastic Molding Apparatus", by A. T. Hardardt and F. B. Zykoff, vol. 10, No. 11, Apr. 1968, pp. 1725-1726.
IBM Technical Disclosure Bulletin, "Hole Position and Orientation Finder", by R. L. Kaftan and R. S. Shryock, vol. 25, No. 7B, Dec. 1982, pp. 3911-3912.

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