Die assembly device for molding laminated assemblies

Details Die assembly device for molding laminated assemblies Die assembly device for molding laminated assemblies

1996-03-27

1998-07-07

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

And means to apply stress to preform and uniting in stressed...

249 83, 249 91, 264275, 425127, 4251291, 425DIG60, B29C 4514

Patent

active

057765090

ABSTRACT:
In a method and die assembly device for molding a laminated assembly comprising a resin core member and a surface skin member covering a part of the surface of the resin core member, the shifting and creasing of the surface skin member is avoided, the molding precision is increased during the mold press forming process, and the external appearance of the assembly is improved. By providing an outer peripheral groove in the die surface of the upper die for mold press forming along the outer periphery of the cavity of the upper die, and relatively large vacuum suction holes in this outer peripheral groove while providing relatively small vacuum suction holes inside the cavity, in particular in recessed parts thereof corresponding to the corners of the product, the surface skin member can be retained to the upper die when mounting the surface skin member on the upper die in both secure and well sealed manner so that the surface skin member would not shift or crease during the mold press forming process, and, therefore, the molding precision can be improved.

REFERENCES:
patent: 4201612 (1980-05-01), Figge et al.
patent: 4260576 (1981-04-01), Pollard
patent: 4266925 (1981-05-01), Book

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