| 摘要 |
PROBLEM TO BE SOLVED: To certainly hold a stamper plate in a mold by simple constitution and to also facilitate replacement by providing a means changing over the bottom part of the center hole of a cavity to a vacuum suction device and a compressed air supply device to connect the same in a mold. SOLUTION: A stamper plate press member 31 having a stamper plate 32 attached thereto is manually inserted into the center hole 37 of a disc cavity plate 36. Succeedingly, a valve 53 is opened to operate a vacuum suction device 50 and air in the space of the center hole 37 is sucked under vacuum through an outside connection hole 43 and the center hole is reduced in pressure for a moment to be brought to a vacuum state and the stamper plate press member 31 is strongly sucked and held to the center hole of the disc cavity plate 36. Next, when a valve 54 is opened at the time of the detachment of the stamper plate 32 to operate a compressed air supply device 51, the stamper plate press member 31 is pushed out of the center hole 37 of the disc cavity plate 36 by air pressure. |
