Mold closing unit for use in an injection molding machine for sy

Details Mold closing unit for use in an injection molding machine for sy Mold closing unit for use in an injection molding machine for sy

1993-04-22

1994-12-20

Nguyen, Khanh

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425190, 425556, 425589, 425592, 425436R, 425436RM, 425451, 4254514, 4254515, 4254519, 425453, B29C 4514, B29C 4542, B29C 4564

Patent

active

053741773

ABSTRACT:
A mold closing unit for use in an injection molding machine for processing plastic materials for removal of moldings is provided with a device for actuating at least two first identical parts of an injection mold, which are transferred alternately into the space between the mold carriers of the mold closing unit on a guideway that runs transversally with respect to the closing direction for creation of an injection mold. Since all parts of the injection mold together with their corresponding swivel arms constitute a single oscillating crank with multiple arms, which transfers the first parts of the injection mold substantially in the parting plane of the mold closing unit, and since the position of the oscillating crank in the mold stressing chamber is determined by the mold closure itself, at least one of the first part of an injection mold being located outside the injection mold is fixed in a precise position that can be repeated for each injection cycle, the moldings can be handed over to a removal device and shorter production times with a faster ejection of moldings is obtained.

REFERENCES:
patent: 3973888 (1976-08-01), Hehl
patent: 3993787 (1976-11-01), Nakabayashi et al.
patent: 4462786 (1984-07-01), Perryman
patent: 4664614 (1987-05-01), De Rossi
patent: 4735761 (1988-04-01), Lindenberger
patent: 4793784 (1988-12-01), Belleville et al.
patent: 5230908 (1993-07-01), Morgan
Modern Plastics International, Oct. 1992, "Injection Molding", p. 30.

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