Closing device in an injection moulding machine for plastics

Details Closing device in an injection moulding machine for plastics Closing device in an injection moulding machine for plastics

2005-09-27

2005-09-27

Mackey, James P. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

C425S451600

Reexamination Certificate

active

06948925

ABSTRACT:
The invention relates to a clamping device for an injection molding machine for plastics, including a fixed platen (11) which is connected to a moving platen (12) by means of a toggle mechanism (13). A hollow-shaft motor (7) is provided to cooperate with a spindle (21) for operating the toggle mechanism, wherein the hollow-shaft motor (7) is connected to the toggle mechanism (13). According to the invention, the spindle (21) is arranged in a rotationally fixed manner, the end of the spindle (21), facing the moving platen (12), is in engagement with the rotor (6) of the hollow-shaft motor (7), and the stator (4) of the hollow-shaft motor is connected with the toggle mechanism (13). Preferably, a spindle nut is fixed in the rotor (6) for engagement with the spindle (21), preferably in the form of a recirculating ball screw.

REFERENCES:
patent: 5585126 (1996-12-01), Heindl et al.
patent: 5804224 (1998-09-01), Inaba et al.
patent: 6413453 (2002-07-01), Onishi
patent: 6682334 (2004-01-01), Becker et al.
patent: 0 620 095 (1994-10-01), None
patent: 8-174612 (1996-07-01), None
patent: WO 01/47685 (2001-07-01), None

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