Molding machine for encapsulation

Details Molding machine for encapsulation Molding machine for encapsulation

1981-06-08

1983-06-07

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

2643284, 2643288, 425544, 425588, B29G 300

Patent

active

043868983

ABSTRACT:
A molding machine for encapsulation including a transfer molding die provided with a plurality of pots which comprises a transfer molding press, a molding die including a plurality of pots allowing for the passage of plungers integrally formed with the rods of the cylinders, a plurality of runners branched off from the pots, a plurality of cavities connected to the runners through the corresponding gates, and displacement transducers for detecting the rate of the displacement of the plungers, variable flow rate control valves communicating with lines connected to the cylinders, and a control circuit for controlling the operation of the variable flow rate control valve in accordance with output signals from the displacement transducers, thereby causing the plungers corresponding to cylinders to be moved exactly at the same speed.

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