Injection molding assembly for forming foam products

Details Injection molding assembly for forming foam products Injection molding assembly for forming foam products

1994-08-11

1995-09-05

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

Molding pressure control means responsive to pressure at...

264 407, 26432811, 425150, 425551, 425562, 425574, 425593, B29C 4577

Patent

active

054474256

ABSTRACT:
An injection molding assembly includes an automatic control unit that activates a machine moving mechanism to move an injection molding machine toward a mold unit and further activates the injection molding machine to inject molten foamable material into a mold cavity of the mold unit until the pressure inside the mold cavity reaches a first predetermined value to indicate that a predetermined amount of the molten foamable material has been fed thereto. The control unit activates the machine moving mechanism to move the injection molding machine away from the mold unit and further activates a mold opening mechanism so as to open the mold unit when the pressure inside the mold cavity reaches a second predetermined value to indicate that foaming of the molten foamable material in the mold cavity has been completed.

REFERENCES:
patent: 4758391 (1988-07-01), Shimizu et al.
patent: 5352394 (1994-10-01), Fujita et al.

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