Apparatus for clamping molds in injection molding machines

Details Apparatus for clamping molds in injection molding machines Apparatus for clamping molds in injection molding machines

1994-06-06

1997-07-01

Heitbrink, Jill L.

Plastic article or earthenware shaping or treating: apparatus

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

425162, 425185, 425192R, B29C 4564

Patent

active

056436130

ABSTRACT:
An electric mold clamping mechanism containing a pair of clamping members is activated by an electric motor. The electric motor operates a threaded piston with acme threads which in turn operate a drive plate to extend and retract the clamping members. The clamping members are used to hold a mold plate in an injection molding machine. The clamping members are pivotally attached to a drive plate mechanism and have a surface which mates with a wedge cam to force the clamping member against the mold plate. The stroke of the clamping mechanism is regulated by an amperage draw on the electric motor. A limit switch is used to terminate the end of the retracting stroke. An indicator light is used to indicate the clamping position of the device.

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