Mold clamping mechanism of injection molding machine

Details Mold clamping mechanism of injection molding machine Mold clamping mechanism of injection molding machine

2007-02-27

2007-02-27

Del Sole, Joseph S. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Mold opening and closing means and segmented female mold

Articulated link

C425S593000, C425SDIG012

Reexamination Certificate

active

11059452

ABSTRACT:
A toggle type mold clamping mechanism for preventing the degradation of parallelism between stationary and movable platens, which is caused due to a clearance between a pin and a bushing, with use of a simple construction. A mold clamping force acting on the pin is transmitted through the bushing to a link L1, thereby moving the movable platen to perform mold clamping. A pre-pressure exerting in the same direction as the direction of a mold clamping force generated at the time of mold clamping is applied by a spring or the like to move the pin toward the link L1. Even a mold opening force is exerted at the time of mold opening, the pre-pressure c provided by the spring or the like keeps the position of the clearance δ between the pin and the bushing unchanged. Since the link L1pulled by the spring or the like is moved to follow the pin (so that the pin is not moved alone by an amount of clearance δ), the parallelism between the stationary and movable platen is not degraded.

REFERENCES:
patent: 2298043 (1942-10-01), Dinzl
patent: 3208373 (1965-09-01), Bachelier
patent: 3632272 (1972-01-01), Herbener
patent: 4276013 (1981-06-01), Bazzea
patent: 4773845 (1988-09-01), Nagura et al.
patent: 4852382 (1989-08-01), Gietz et al.
patent: 5350291 (1994-09-01), Kitajima
patent: 6647869 (2003-11-01), Bornhorst et al.
patent: 6830446 (2004-12-01), Harada et al.
patent: 03-182319 (1991-08-01), None
patent: 07-08918 (1995-04-01), None
EP Search Report for corresponding EP Application EP 05250890.0-1253.

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