JPS637511U

JPS637511U -

Info

Publication number: JPS637511U
Application number: JP10074186U
Authority: JP
Priority date: 1986-06-30
Filing date: 1986-06-30
Publication date: 1988-01-19

Description

[Brief explanation of the drawing]

図は本考案の一実施例を示し、第１図は第２図
の―線断面図、第２図は第３図の―線矢
視図、第３図は本考案に係るアンダカツト処理構
造を備えたコアの半断面図、第４図は該アンダカ
ツト処理構造の分解斜視図、第５図は角ピンの部
分切欠斜視図、第６図は第５図の―線断面図
である。１：成形品、４：アンダカツト、６：コア、７
：凹陥穴、１６：案内ブロツク、１７：傾斜コア
、１８：角ピン、２１，２３：斜面、２４：あり
、２５：あり溝、２７：成形凹部、２８：突起、
３２：横穴。 The figures show one embodiment of the present invention, in which Fig. 1 is a sectional view taken along the line - - of Fig. 2, Fig. 2 is a view taken along the line - - of Fig. 3, and Fig. 3 shows an undercut treatment structure according to the present invention. 4 is an exploded perspective view of the undercut processing structure, FIG. 5 is a partially cutaway perspective view of the square pin, and FIG. 6 is a sectional view taken along the line -- in FIG. 5. 1: Molded product, 4: Undercut, 6: Core, 7
: recessed hole, 16: guide block, 17: inclined core, 18: square pin, 21, 23: slope, 24: with, 25: dovetail groove, 27: molded recess, 28: protrusion,
32: Side hole.

Claims

[Scope of utility model registration request]

In an undercut treatment structure of an injection mold for treating an undercut partially protruding from one side of an injection molded product, a recessed hole is provided in the mold surface for molding one side of the injection molded product, and a recessed hole is provided in the mold surface for molding one side of the injection molded product, and a recessed hole is provided in the mold surface for molding one side of the injection molded product, A guide block, an inclined core, and a square pin that are in contact with each other in sequence are inserted and installed as a unit, and the guide block has an inclined surface that contacts the reverse inclined surface of the inclined core and is fixed in the recessed hole, and the inclined core is fixed in the recessed hole. The guide block and the slope are engaged through a dovetail groove extending in the vertical direction of the recessed hole, and a molding recess is provided on the surface opposite to the reverse slope to mold one surface of the undercut, A protrusion protruding toward the square pin is provided below the square pin, and the square pin extends along the moving direction of the mold through the bottom of the recessed hole, and one side of the square pin extends beyond the undercut. An undercut treatment structure for the injection mold, characterized in that the side surface is oriented toward the inclined core as a molding surface, and a side hole is provided in the one side surface to slidably engage with the projection. .