JPH03114313U

JPH03114313U -

Info

Publication number: JPH03114313U
Application number: JP2451390U
Authority: JP
Priority date: 1990-03-12
Filing date: 1990-03-12
Publication date: 1991-11-25

Description

[Brief explanation of drawings]

第１図〜第５図は本考案の一実施例の金型に関
し、第１図は第２図のＡ−Ａ断面相当の全体断面
図、第２図は下型の平面図、第３図および第４図
は作動機構を示す説明図、第５図は揺動コアの斜
視図である。第６図は実施例の金型で形成される
アンダーカツト部をもつ成形体の断面図、第７図
は従来のアンダーカツト処理機構をもつ金型の断
面図である。１……下型、２……上型、３……揺動コア、４
……ピストン部材、５……スプリング（付勢部材
）、６……リンク機構、１２……分割面、３０…
…アンダー型面、１０１……アンダーカツト部。 Figures 1 to 5 relate to a mold according to an embodiment of the present invention, in which Figure 1 is an overall sectional view corresponding to the A-A cross section in Figure 2, Figure 2 is a plan view of the lower mold, and Figure 3 is a cross-sectional view of the entire mold. 4 is an explanatory diagram showing the operating mechanism, and FIG. 5 is a perspective view of the swing core. FIG. 6 is a sectional view of a molded article having an undercut portion formed by the mold of the embodiment, and FIG. 7 is a sectional view of a mold having a conventional undercut processing mechanism. 1...lower mold, 2...upper mold, 3...oscillating core, 4
... Piston member, 5 ... Spring (biasing member), 6 ... Link mechanism, 12 ... Dividing surface, 30 ...
...Under mold surface, 101...Undercut part.

Claims

[Claims for Utility Model Registration] A mold having an undercut processing mechanism on one side of a split mold, wherein the undercut processing mechanism has an under mold surface forming an undercut portion and is held swingably. a swinging core, a piston member held so as to be freely removable and removable from a dividing surface, a link mechanism that connects the swinging core and the piston member and swings the swinging core by movement of the piston member, and the piston. and a biasing member provided on at least one of the member and the link mechanism to bias the piston member in a direction to protrude from the divided surface, and when the mold is clamped, the tip of the piston member is pushed away from the other side of the divided mold. When pressed against the biasing force of the biasing member, the swinging core swings to hold the under mold surface at the undercut forming position, and is biased by the biasing member when the mold is opened. A molding die characterized in that the swinging core swings as the piston member moves, and the under-mold surface moves in a direction away from the undercut portion.