JPH0222217U

JPH0222217U -

Info

Publication number: JPH0222217U
Application number: JP9868488U
Authority: JP
Priority date: 1988-07-26
Filing date: 1988-07-26
Publication date: 1990-02-14

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例を示す図でビー
ドカムによる引き込み量規制状態の断面図、第２
図は第１図の要部拡大断面図、第３図は同じくビ
ードカムによる引き込み量規制前の状態を示す断
面図、第４図は本考案の第２の実施例を示す図で
ビードカムによる引き込み量規制前の状態を示す
断面図、第５図は同じくビードカムによる引き込
み量規制状態の断面図、第６図は従来のプレス成
形装置の構成説明図、第７図は第６図の要部拡大
図である。１……ダイ、１ａ……ブランク押圧面、２……
ブランクホルダ、２ａ……ブランク押圧面、３…
…ポンチ、４……ビードカム、４ａ……カム面、
５……カム受容部、１４……ビードカム、１４ａ
……カム面、１５……カム受容部、Ｗ……ブラン
ク材。 Fig. 1 is a cross-sectional view showing the first embodiment of the present invention, in which the amount of retraction is regulated by the bead cam;
The figure is an enlarged cross-sectional view of the main part of Figure 1, Figure 3 is a cross-sectional view showing the state before the amount of retraction by the bead cam is regulated, and Figure 4 is a diagram showing the second embodiment of the present invention, which shows the amount of retraction by the bead cam. 5 is a sectional view showing the state before regulation, FIG. 5 is a sectional view of the state in which the amount of retraction is regulated by the bead cam, FIG. 6 is an explanatory diagram of the configuration of a conventional press molding device, and FIG. 7 is an enlarged view of the main parts of FIG. 6. It is. 1...Die, 1a...Blank pressing surface, 2...
Blank holder, 2a...Blank pressing surface, 3...
...Punch, 4...Bead cam, 4a...Cam surface,
5...Cam receiving part, 14...Bead cam, 14a
...Cam surface, 15...Cam receiving part, W...Blank material.

Claims

[Scope of utility model registration request]

In a press forming machine that pulls a blank material pressed and held between a die and a blank holder into the die side and draws it into a predetermined shape by cooperation between the die and a punch, the blank is pressed by either the die or the blank holder. A cam receiving portion is formed on one surface, and the other surface has a cam surface that protrudes from the other blank pressing surface, and the amount of protrusion from the other blank pressing surface increases as the blank material is drawn into the die side. A press characterized in that a bead cam is provided at a position corresponding to the cam receiving part, and the bead cam is gradually displaced to become larger and cooperates with the cam receiving part to regulate the amount of drawing of the blank toward the die side. Molding equipment.