JPS6167108U

JPS6167108U -

Info

Publication number: JPS6167108U
Application number: JP15105084U
Authority: JP
Priority date: 1984-10-05
Filing date: 1984-10-05
Publication date: 1986-05-08

Description

[Brief explanation of drawings]

第１図Ａは、この考案の実施例を示す要部断面
図、第１図Ｂは、ベントチユーブの正面図、第２
図は、従来の金型の別体型にベントホールを設け
た場合を示す部分断面図、第３図は、第２図の金
型によつて成形加硫されたゴム成形品と派生した
スピユーの生成状態とを示す断面図、第４図は、
第３図のゴム成形品とスピユーとを金型を除外し
て示す断面図である。図中、１０は金型本体、１２は別体型嵌着用穴
部、１５はベントホール、１６はベントチユーブ
挿入部、２０は別体型、３０はベントチユーブ、
３１はベントチユーブのベントホール、３２はベ
ントチユーブの突出端部、５１はスピユー、Ｌは
スピユーの派生長さ、Ｔａは別体型の板厚、Ｓは
ベントチユーブの長さである。 Figure 1A is a cross-sectional view of the main part showing an embodiment of this invention, Figure 1B is a front view of the vent tube, and Figure 1B is a front view of the vent tube.
The figure is a partial cross-sectional view showing a case where a vent hole is provided in a separate part of a conventional mold, and Figure 3 shows a rubber molded product molded and vulcanized by the mold in Figure 2 and a derived spill. A cross-sectional view showing the state of production, FIG.
FIG. 4 is a sectional view showing the rubber molded product and spewer of FIG. 3 with the mold removed. In the figure, 10 is a mold body, 12 is a hole for fitting a separate model, 15 is a vent hole, 16 is a vent tube insertion part, 20 is a separate model, 30 is a vent tube,
31 is the vent hole of the vent tube, 32 is the protruding end of the vent tube, 51 is the spew, L is the derived length of the spew, Ta is the plate thickness of the separate mold, and S is the length of the vent tube.

Claims

[Scope of utility model registration request]

A separate type is formed on a part of the inner surface of the mold body with a vent hole to a thickness thinner than the length of the rubber material spill that flows into the vent hole during vulcanization of the rubber molded product. In the mold for vulcanization of the rubber molded product, which is fitted in a replaceable manner,
One end surface of a vent tube, which has a total length exceeding the derived length of the spill in the thickness direction of the separate mold and is provided with a vent hole penetrating in the length direction, is flush with the surface of the separate mold. The hole for fitting the separate model in the mold body is provided with a vent tube insertion part at the opening of the vent hole located on the same center line as the vent hole of the separate model vent tube. A mold for vulcanizing a rubber molded product, characterized in that a protruding end on the rear side of a separate vent tube fitted into a mold body is inserted into a vent tube insertion portion of the mold body.