Die for molding disc substrates

Details Die for molding disc substrates Die for molding disc substrates

2005-12-06

2005-12-06

Heckenberg, Donald (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

C425S542000, C425S810000

Reexamination Certificate

active

06971866

ABSTRACT:
The present invention provides a stamper holding mechanism that is stable, cannot be loosened, that does not use frictional forces and is not affected by vibration and temperature variations. To that end, there is provided a die, for molding disc substrates, that forms a cavity23by providing a stamper10on either one or both of a stationary mirror plate8of a stationary die1and a movable mirror plate16of a movable die11, including: rotation mechanism for allowing a holding member, which holds the stamper10on the mirror plate and which can be removable, to advance or retreat; and engagement mechanism for abutting on the rotation mechanism to be engaged therewith in a direction to remove the holding member when the rotation mechanism is rotated in the direction.

REFERENCES:
patent: 3894825 (1975-07-01), Westermann
patent: 5326240 (1994-07-01), Kudo et al.
patent: 5466145 (1995-11-01), Takahashi
patent: 5607705 (1997-03-01), Asai
Patent Abstracts of Japan, 07-214604, Aug. 8, 1995, Disc Substrate Mold With Stamper Loading/Unloading Device.

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