Mold clamping force correction method for toggle-type mold...

Details Mold clamping force correction method for toggle-type mold... Mold clamping force correction method for toggle-type mold...

2007-07-17

2007-07-17

Heitbrink, Jill L. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

C264S040500, C264S328100, C425S138000, C425S150000, C425S589000, C425S593000

Reexamination Certificate

active

10980780

ABSTRACT:
A clamping apparatus is operable in a closure position detection mode for detecting closure of a mold on the basis of a change in a physical quantity because of closure of the mold, detecting a position of a crosshead of a toggle mechanism at the time of detection of the closure, and obtaining a closure position of a movable platen at the time of the closure from the detected position of the crosshead. The apparatus is previously operated in the closure position detection mode to store, as a reference value, the closure position at which a target mold clamping force is obtained. In the production operation, the apparatus is operated in the closure position detection mode to obtain an actual closure position (detection value). The mold clamping force is corrected on the basis of a deviation of the detection value from the reference value.

REFERENCES:
patent: 5425905 (1995-06-01), Herbst
patent: 5440213 (1995-08-01), Arita et al.
patent: 6409495 (2002-06-01), Kamiguchi et al.
patent: 2004/0067276 (2004-04-01), Watanabe
patent: 62-32020 (1987-02-01), None
patent: 6-61806 (1994-08-01), None
patent: 6-232020 (1994-08-01), None

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