JPH0288719U

JPH0288719U -

Info

Publication number: JPH0288719U
Application number: JP16816288U
Authority: JP
Priority date: 1988-12-28
Filing date: 1988-12-28
Publication date: 1990-07-13

Description

[Brief explanation of drawings]

第１図は、この考案の一実施例を示す金型の概
略断面図、第２図は、同金型の動作時の概略断面
図、第３図は、この考案の一実施例において成形
される成形品の部分斜視図、第４図は、同成形品
の成形原理を示す模式図、第５図は、この考案に
関係する成形品の一例を示す斜視図、第６図は、
同成形品の断面図である。１１……成形品、１２，１３……アンダーカツ
ト部、１５……回転ブロツク、１６……エジエク
ターピン、１７……固定金型、１８……可動金型
、１９……キヤビテイ、２３……カム溝、２４，
２５……係合ピン、２６……エジエクタープレー
ト、２７……エジエクターピン、２８……押し出
しロツド。 Fig. 1 is a schematic sectional view of a mold showing an embodiment of this invention, Fig. 2 is a schematic sectional view of the same mold during operation, and Fig. 3 is a schematic sectional view of the mold in an embodiment of this invention. FIG. 4 is a schematic diagram showing the forming principle of the molded product, FIG. 5 is a perspective view showing an example of a molded product related to this invention, and FIG. 6 is a partial perspective view of the molded product.
It is a sectional view of the same molded article. 11... Molded product, 12, 13... Undercut portion, 15... Rotating block, 16... Ejector pin, 17... Fixed mold, 18... Movable mold, 19... Cavity, 23... Cam groove, 24,
25... Engagement pin, 26... Ejector plate, 27... Ejector pin, 28... Extrusion rod.

Claims

[Scope of utility model registration request]

A mold for molding a molded product having at least a pair of inward undercut portions facing each other at different positions, the rotary block for molding the pair of undercut portions being operated to open the mold. A cam groove is provided at the tip of the ejector pin that projects in conjunction with the ejector pin, and a cam groove is provided in the ejector pin for rotating the ejector pin, and the ejector pin is held while holding the released molded product together with the rotating block. An undercut rotary punching mold characterized in that the rotary block is separated from the molded product by rotation.