JPH02124113U

JPH02124113U -

Info

Publication number: JPH02124113U
Application number: JP2056189U
Authority: JP
Priority date: 1989-02-25
Filing date: 1989-02-25
Publication date: 1990-10-12

Description

[Brief explanation of drawings]

第１〜４図は本考案を具体化した一実施例を示
し、第１図はコアを可動型内に没入させた状態を
示す成形用金型の断面図、第２図は第１図におけ
る−線断面図、第３図は第１図における−
線断面図、第４図はコアを可動型から突出させ
た状態を示す成形用金型の断面図であり、第５〜
７図は従来技術を示し、第５図はコアを可動型内
に没入させた状態を示す成形用金型の断面図、第
６図は第５図における−線断面図、第７図は
コアを可動型から突出させた状態を示す成形用金
型の断面図である。１……固定型、２……可動型、３……挿通孔、
４……コア、８……嵌合部、９……成形部として
の成形凹部、１２……作用面、１３……回動中心
、Ａ……アンダーカツト部。 1 to 4 show an embodiment embodying the present invention, FIG. 1 is a sectional view of a molding die showing a state where the core is immersed in the movable mold, and FIG. 2 is a cross-sectional view of the molding die shown in FIG. - Line sectional view, Figure 3 is in Figure 1 -
Line sectional view, FIG. 4 is a sectional view of the molding die showing a state where the core is projected from the movable mold,
Fig. 7 shows the prior art, Fig. 5 is a sectional view of a molding die showing a state in which the core is immersed in the movable mold, Fig. 6 is a sectional view taken along the - line in Fig. 5, and Fig. 7 is a sectional view of the core. FIG. 3 is a cross-sectional view of the molding die showing a state in which the molding die protrudes from the movable mold. 1... fixed type, 2... movable type, 3... insertion hole,
4...Core, 8...Fitting part, 9...Molding recess as a molding part, 12...Working surface, 13...Rotation center, A...Undercut part.

Claims

[Claims for Utility Model Registration] A fixed mold 1 and a fixed mold 1 arranged so as to be able to be attached to and separated from the fixed mold 1,
A movable mold 2 having an insertion hole 3 extending in the direction of approach and separation, and a pair of cores 4 inserted into the insertion hole 3 so as to be able to move in and out of the movable mold 2,
At the contact portion of both cores 4, there is an undercut portion A extending in a direction substantially perpendicular to the direction of contact and separation of the movable mold 2.
In a molding die provided with a molding part 9 for molding, both cores 4 are fitted into the insertion hole 3 in a state where they are in contact with each other when inserted into the movable mold 2, and the cores 4 are inserted into the movable mold 2. A fitting part 8 is formed that separates from the insertion hole 3 when protruding from the insertion hole 3, and the insertion hole 3 and the fitting part 8 have the same curved shape. By abutting against the end of the insertion hole 3 when protruding from the undercut portion, at least one of the cores 4 is rotated about a rotation center 13 provided at the abutting portion of both cores 4, and the undercut portion is rotated. A molding die characterized in that a working surface 12 for separating a molding part 9 from A is formed.