Method of setting mold clamping force of injection molding...

Details Method of setting mold clamping force of injection molding... Method of setting mold clamping force of injection molding...

2011-07-19

2011-07-19

Heitbrink, Jill L (Department: 1743)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

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

C264S328100, C425S150000

Reexamination Certificate

active

07981333

ABSTRACT:
Test molding is performed by sequentially clamping a mold2with a mold clamping force (100%, 80%, 70%, . . . ) obtained by sequentially lowering a mold clamping force by a predetermined amount from the maximum mold clamping force (100%); with mold position sensors4provided on outer surfaces3cfand3mfof a fixed platen3csupporting a fixed mold2cof the mold2and a movable platen3msupporting a movable mold2mof the mold2, a relative position (mold position Xc) of the movable platen3mwith respect to the fixed platen3cin an injection process is detected; and, when at least a variation that meets predetermined conditions is produced on the mold position Xc, a mold clamping force obtained by increasing a mold clamping force at a time of occurrence of the variation by a predetermined amount is set as a proper mold clamping force Fs.

REFERENCES:
patent: 4131596 (1978-12-01), Allen
patent: 4913638 (1990-04-01), Buja
patent: 4942004 (1990-07-01), Catanzaro
patent: 5493503 (1996-02-01), Richards et al.
patent: 6048476 (2000-04-01), Lausenhammer et al.
patent: 6562265 (2003-05-01), Usui et al.
patent: 7037452 (2006-05-01), Speight
patent: 2003-320569 (2003-11-01), None
patent: 3833140 (2003-11-01), None
Electronic translation of Japanese reference 2003-320569.

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