JPH0390927U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of the first embodiment of the injection mold, Fig. 2 is an exploded view of the slide core 3 and cam body 5 of Fig. 1, and Fig. 3 is the movable mold after operation. 4 is a sectional view of essential parts according to the second embodiment of the injection mold, FIG. 5 is a sectional view of essential parts according to the first example of the conventional injection mold, and FIG. 6 is the conventional injection mold. FIG. 7 is a cross-section of a main part of a second example of a conventional injection mold, FIG. 8 is a cross-section of a main part of a third example of a conventional injection mold. This is a cross section of the main part. In the figure, 1...polygon mirror (product), 3...
Slide core, 4... Cavity member, 5... Cam body, 6... Spool bush, 7... Fixed side entry piece, 8... Slide member, 9... Locating member, 10... Fixed side mounting plate , 12...Fixed template plate, 18...Spring, 20...Movable template plate, 22...Movable side entry piece, 24...Ejector pin, 26...Ejection pin, 28...Nozzle, 3
0...Temperature control tube.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A first cavity of a fixed mold provided on the fixed side of an injection molding machine, a second cavity of a movable mold provided on the movable side, and a side part of the second cavity. an injection molding mold having a cavity formed from a slide core that has a cavity side portion and is slidably held on the movable side, and has a first inclined surface and a second inclined surface. a cam body that is fixed to the fixed side together with the cam body; and a first sliding surface and a second sliding surface that slide into contact with the first slope surface and the second slope surface when the cam body is in an inserted state. By providing a hole in the slide core, the first inclined surface slides into contact with the first sliding surface during the mold closing operation, and the cavity side surface of the slide core is directed toward the cavity. The injection molding is characterized in that the second inclined surface is in sliding contact with the second sliding contact surface and the cavity side surface of the slide core is separated from the cavity during the mold opening operation. Mold. (2) The side surface of the cavity is the first part on the fixed side.
The injection mold according to claim 1, characterized in that the mold forms an undercut surface relative to the cavity. (3) fixing a first cavity of a fixed mold provided on the fixed side of the injection molding machine, a second cavity of the movable mold provided on the movable side, and a cavity member forming a side surface of the second cavity; An injection molding mold including a cavity formed of a slide core that is movable with respect to the second cavity and is held on the movable side, the mold having a first inclined surface, a second inclined surface, and a third inclined surface. further comprising: a cam body having an inclined surface and fixed to the fixed side; and a sliding body provided on the movable side and slidingly in contact with the third inclined surface, the cam body being inserted into the state; By providing a hole in the slide core, and providing a first sliding surface and a second sliding surface in sliding contact with the first slope and the second slope, in the hole, During the mold closing operation, the third inclined surface slides into contact with the sliding body and the cavity side surface of the slide core moves toward the cavity, while during the mold opening operation, the second inclined surface slides into contact with the sliding body. An injection molding mold characterized in that the cavity side surface of the slide core is separated from the cavity by slidingly contacting the second sliding surface. (4) The injection mold according to claim 3, wherein the side surface portion constitutes an undercut surface for the first cavity on the fixed side.