Material injection system of a plastic material injection moldin

Details Material injection system of a plastic material injection moldin Material injection system of a plastic material injection moldin

1996-10-16

1998-07-14

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to cause relative movement between mold and charger

26432811, 425575, B29C 4507

Patent

active

057800782

ABSTRACT:
A material injection system of a plastic material injection molding machine is disclosed. It includes a base, several molds disposed on the base and a material injection seat X axis and Y axis movably disposed on the base. A material stopping member is disposed on each mold so as to prevent the foam material therein from spilling outside. Each mold is formed with a ventilating opening connected to a vacuum sucking machine for sucking out the air in the mold cavity during injection of the material, whereby the foam material can smoothly flow in the mold cavity without producing any bubble. The material injection nozzle is disposed with a material stopping structure for avoiding leakage of the material. An advancing and a retracting hydraulic cylinders are disposed on the base for eliminating the affection on the accuracy of alignment of the nozzle with the pouring gate. A guiding device is disposed between the material injection seat and the base for aligning the nozzle with the pouring gate of the mold during injection of the material without deflection. Thus, higher injection accuracy and quality can be achieved.

REFERENCES:
patent: 4676730 (1987-06-01), Yamasaki
patent: 4983117 (1991-01-01), Von Buren et al.
patent: 5007816 (1991-04-01), Hehl

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