Mold closure position detection method for mold clamping...

Details Mold closure position detection method for mold clamping... Mold closure position detection 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

07132068

ABSTRACT:
In a mold closure position detection method, a mold closure position is detected on the basis of a variation in a physical quantity because of closure of a mold. The method comprises detecting an amount of movement of a movable platen, or a crosshead in the case where the mold clamping apparatus is of a toggle type, during closure of the mold; detecting a variation in the physical quantity because of closure of the mold; obtaining a rate of variation (which encompasses an amount of variation) in the physical quantity to a predetermined amount of movement of the movable platen or the crosshead; and detecting, as a mold closure position, a position of the movable platen or the crosshead when the variation rate reaches a preset ratio.

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patent: 2004/0067276 (2004-04-01), Watanabe
patent: 62-32020 (1987-02-01), None
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