JPH0480637U

JPH0480637U -

Info

Publication number: JPH0480637U
Application number: JP12383590U
Authority: JP
Priority date: 1990-11-26
Filing date: 1990-11-26
Publication date: 1992-07-14
Anticipated expiration: 2005-06-14
Also published as: JPH0726029Y2

Description

[Brief explanation of drawings]

第１図は、本考案のエンジンバルブ成型用の鍛
造成型用金型の断面図、第２図はその成形過程を
順次示す断面図、第３図は金型の加熱媒体循環流
路を示す横断面図、第４図は本考案のエンジンバ
ルブ成型用の鍛造成型用金型の使用状態を示す全
体の模式図、第５図ａ〜ｄは離型剤を用いた場合
の作用を示す説明図、第６図はこの考案の鍛造成
型用金型の異なる実施例を示す断面図である。１……鍛造成型用金型、２……超硬部、２ａ…
…造形部、３……金型ケース部、５……環状溝、
６ａ，６ｂ……流路、７……環状流路、８ａ，８
ｂ……環状用パイプ、１０……鍛造プレス。 Figure 1 is a cross-sectional view of a forging mold for molding engine valves of the present invention, Figure 2 is a cross-sectional view sequentially showing the forming process, and Figure 3 is a cross-sectional view showing the heating medium circulation flow path of the mold. 4 is an overall schematic diagram showing the state of use of the forging mold for molding engine valves of the present invention, and FIGS. 5 a to 5 d are explanatory diagrams showing the effect when a mold release agent is used. , FIG. 6 is a sectional view showing a different embodiment of the forging mold of this invention. 1... Forging mold, 2... Carbide part, 2a...
... Molding part, 3... Mold case part, 5... Annular groove,
6a, 6b... Channel, 7... Annular channel, 8a, 8
b...Annular pipe, 10...Forging press.

Claims

[Scope of claim for utility model registration] (1) A mold case consisting of a carbide part provided with a molded part and a mold case part provided with a fitting part into which the carbide part is fitted. In a forging mold fixed to a fitting part of a part, a heating medium circulation system is formed along the periphery of the part to keep the part warm at a predetermined high temperature of 100°C or higher. A forging mold characterized by having a flow path. (2) The heating medium circulation flow path is an annular flow path formed by a notch formed along the outer periphery of the carbide part and the peripheral wall of the fitting part of the mold case part, and the fitting part and the mold case part. 2. The forging mold according to claim 1, further comprising an inlet/outlet passage passing through the outer periphery of the annular flow passage and communicating with the annular flow passage. (3) A heating medium circulation channel consisting of an annular channel surrounding the periphery of the shaping section and an inlet/outlet channel through which a heating medium can be introduced into and out of the annular channel from outside the mold is provided inside the mold having the shaping section. A forging mold characterized by forming. (4) Claim 1, 2 or 3, characterized in that the heating medium consists of oil heated to about 130°C.
The forging mold described in .