Mechanism for closing a mold in plastic injection-molding machin

Details Mechanism for closing a mold in plastic injection-molding machin Mechanism for closing a mold in plastic injection-molding machin

1995-02-02

1996-08-20

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

100 46, 100258A, 425408, 425409, 4254501, 4254519, 425590, 425595, B29C 4564

Patent

active

055473679

ABSTRACT:
A mechanism for closing a mold in plastic injection-molding machinery that accommodates a large and heavy molding tool (5). One stationary chuck (2) rests machinery's base (1), while another chuck (3) travels on a longitudinally movable carriage (4). Each chuck (2,3) accommodates one half of the mold (5) and is aligned by poles (6) which can extend through the chucks. The carriage has a number of bearing sites (4.4) mounted on its bottom surface proximate to its corners. Suspension crossarms (10.2, 14.2) are rotatably mounted to the bearing sites (4.4). The rear suspension crossarms (10.2, 14.2) are mounted using a shaft (11) which has two eccentric portions (11.1) with opposite eccentricities. The non-eccentric portions (11.2) of the shaft are connected to one another by a torsion rod (12) and are rotatably mounted in the bearing sites (4.4). The rear suspension crossarms (10.2, 14.2) are rotatably mounted on the eccentric portions (11.1) of the shaft (11). Rocking shoes (10.1, 14.1) are mounted, preferably rotatably, to each of the suspension crossarms (10.2, 14.2), preferably in a calotte joint. The rocking shoes (10.1, 14.1) ride on rails of the base (1) of the apparatus.

REFERENCES:
patent: 5354196 (1994-10-01), Ziv-Av
patent: 5356279 (1994-10-01), Fuller et al.
patent: 5399083 (1995-03-01), Wollschlager

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