Injection molding machine having mold locking unit equipped with

Details Injection molding machine having mold locking unit equipped with Injection molding machine having mold locking unit equipped with

1980-06-06

1982-08-24

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

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

Temperature control

264 405, 100214, 425149, 425150, 425171, 425172, 4254512, 425590, 425DIG223, B29F 106

Patent

active

043458904

ABSTRACT:
An injection mold with locking device comprises a fixed backing plate and a fixed mold part plate which are connected to each other by four tie rods. A movable mold part plate is connected to the fixed backing plate through a drive and locking mechanism which is capable of moving the movable mold part plate into a mold position with the fixed mold part plate. A thermal force control apparatus is associated with one or more of the tie rods for changing the temperature of the tie rods and thereby causing the tie rods either to expand or contract. By such expansion or contraction, the exact force applied between the fixed and movable mold part plates can be adjusted to a desired level.

REFERENCES:
patent: 1149518 (1915-08-01), Holmes
patent: 3579741 (1971-05-01), Schwartz

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