Mold clamping apparatus, molding machine and mold clamping...

Details Mold clamping apparatus, molding machine and mold clamping... Mold clamping apparatus, molding machine and mold clamping...

2007-10-30

2007-10-30

Mackey, James (Department: 1722)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Positioning of a mold part to form a cavity or controlling...

C164S137000, C164S154200, C164S341000, C164S342000, C164S457000, C425S150000, C425S595000

Reexamination Certificate

active

11087771

ABSTRACT:
To provide a mold clamping apparatus that a new actuator is not necessary for a mold thickness adjustment and that the mold thickness adjustment can be performed at low cost. A mold clamping apparatus has a tie bar having a piston and a coupled groove, a cylinder for mold clamping that has the piston of the tie bar built in and that pressured driving liquid for generating mold clamping force is supplied, a half nut coupled with the tie bar releasably by meshing with the coupled groove, a position sensor detecting a position of a moving direction of the tie bar, a direction change valve changing a supply of the driving liquid between a first cylinder chamber and a second cylinder chamber, and a control apparatus positioning a position of the tie bar at a position that the half nut and the coupled groove are able to be meshed by controlling the direction change valve in response to the position of the tie bar detected by the position sensor.

REFERENCES:
patent: 5753153 (1998-05-01), Choi
patent: 5863474 (1999-01-01), Ito et al.
patent: 6821104 (2004-11-01), Kubota et al.
patent: 08-276482 (1996-10-01), None
patent: 10-296739 (1998-11-01), None
patent: 2003-181894 (2003-07-01), None

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