Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Reexamination Certificate
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
11017744
ABSTRACT:
In a mold protection method for a mold clamping apparatus, a predetermined mold protection zone is set in a zone in which a mold is closed, and an anomaly such as presence of a foreign object is detected on the basis of a change in a physical quantity in the mold protection zone so as to protect the mold. The method includes the steps of previously setting, as a reference position, a closed position of a movable platen at which a target mold clamping force is obtained; setting an end position of the mold protection zone with respect to the reference position; obtaining, during a production operation, an actual closed position (detected position) of the movable platen; and correcting the end position of the mold protection zone on the basis of a deviation between the detected position and the reference position.
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Hakoda Takashi
Miyajima Masahiko
Heitbrink Jill L.
Nissei Plastic Industrial Co. Ltd.
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