Mold clamping force correction method for mold clamping...

Details Mold clamping force correction method for mold clamping... Mold clamping force correction method for mold clamping...

2006-11-07

2006-11-07

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

07132069

ABSTRACT:
A closure position detection mode is provided so as to obtain a rate of variation (which encompasses an amount of variation) in a physical quantity to a predetermined amount of movement of a movable platen or a crosshead, and detect, as a mold closure position, a position when the variation rate reaches a preset ratio. The mold clamping apparatus is previously operated in the closure position detection mode so as to store, as a reference value, the mold closure position at which a target mold clamping force is obtained. In production operation, the mold clamping apparatus is operated in the closure position detection mode so as to obtain an actual mold closure position (detection value). The mold clamping force is corrected on the basis of a deviation of the detection value from the reference value.

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