Die clamping unit

Details Die clamping unit Die clamping unit

2006-04-11

2008-08-26

Mackey, James (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

C425S441000, C425S450100, C425S595000

Reexamination Certificate

active

07416403

ABSTRACT:
A die clamping unit includes a stationary platen, a tie bar which is attached to the stationary platen, a movable platen which is movable forwards and backwards along the tie bar with respect to the stationary platen, a first servomotor which moves the movable platen away from the stationary platen in a core-back operation, a second servomotor which moves the movable platen forwards and backwards to perform die-opening and -closing, and a control device which drives the first servomotor to move the movable platen away from the stationary platen and which drives the second servomotor to apply a force to the movable platen in the direction toward the stationary platen in the core-back operation.

REFERENCES:
patent: 6877977 (2005-04-01), Wohlrab
patent: 2003/0189267 (2003-10-01), Nishizawa et al.
patent: 102 02 374 (2003-07-01), None
patent: 10-296739 (1998-11-01), None
patent: 2004-98582 (2004-04-01), None
patent: 2004-314491 (2004-11-01), None
patent: 2004-314492 (2004-11-01), None

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