Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Measuring a weight or volume
Patent
1998-03-11
2000-08-15
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Measuring a weight or volume
264 405, 264157, 264160, 2643285, 2643289, 26432817, 425544, 425140, 425149, 425806, B29C 4358, B29C 4354, B29C 4334
Patent
active
06103150&
ABSTRACT:
An automated method for controlling the amount of charge introduced in a mold having a mold cavity and associated overflow assembly by adjusting the amount of charge introduced into the mold cavity in subsequent moldings using a measurement of the amount of excess charge material received by the overflow assembly. The charge is formed so that the fibers therein are randomly oriented in substantially parallel horizontal planes such that they are always substantially parallel to the direction of initial flow into the cavity of the molding unit. Excess charge from the cavity is forced into the charge overflow unit, which is selectively located in an area where surface finish is less critical. The excess charge displaces an overflow pin, which is kept upwardly biased, under molding pressure, to be flush with the lower inside wall of the molding unit cavity. The pin displacement is measured by a sensing transducer. The measurement data is sent to a microprocessor, which progressively sends adjustment signals to the charge forming unit, so that the size of the subsequently cut strips can be efficiently determined.
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Poe Michael I.
Silbaugh Jan H.
The Budd Company
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