JPH0379909U

JPH0379909U -

Info

Publication number: JPH0379909U
Application number: JP1989141220U
Authority: JP
Priority date: 1989-12-06
Filing date: 1989-12-06
Publication date: 1991-08-15
Anticipated expiration: 2004-04-20
Also published as: JPH0614976Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の一部を切欠けた斜
視図、第２図はその拡大断面図、第３図は間隙形
成金型が１枚おきに引き抜かれる状態を示す要部
拡大断面図、第４図は特に条件１〜３を具備する
ことを示した要部拡大断面図、第５図は条件２を
具備しない薄板形状の要部拡大断面図、第６図は
条件３を具備しない薄板形状の要部拡大断面図、
第７図は条件１〜３を具備することを示した第２
実施例の要部拡大断面図、第８図は間隙形状金型
一部の斜視図、第９，１０図は間隙形成金型を引
き抜く状態を示す側断面図、第１１図は成形装置
Ａの成形状態での正断面図、第１２図は成形装置
Ａの成形状態での一部を切り欠いた側面図、第１
３図は成形装置Ａの型を割つて間隙形成金型を離
形してコアを取り出した状態の正断面図、第１４
図は従来例の要部拡大断面図である。ａ……プラスチツク製品、１……薄板、１……
表面、１……裏面、２……間隙。 Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is an enlarged sectional view thereof, and Fig. 3 is an enlarged view of the main part showing the state in which the gap forming mold is pulled out every other piece. 4 is an enlarged sectional view of the main part showing that Conditions 1 to 3 are met, FIG. 5 is an enlarged sectional view of the main part of a thin plate shape that does not meet Condition 2, and FIG. An enlarged sectional view of the main part of the thin plate shape without
Figure 7 shows the second condition that satisfies conditions 1 to 3.
8 is a perspective view of a part of the gap-shaped mold, FIGS. 9 and 10 are side sectional views showing the state in which the gap-forming mold is pulled out, and FIG. 11 is a view of the molding apparatus A. FIG. 12 is a front sectional view of the molding device A in the molding state, and FIG.
Figure 3 is a front cross-sectional view of the mold of molding device A in which the mold is broken, the gap forming mold is released, and the core is taken out, No. 14.
The figure is an enlarged sectional view of the main part of a conventional example. a...Plastic product, 1...Thin plate, 1...
Front surface, 1... back surface, 2... gap.

Claims

[Scope of Utility Model Registration Claim] In a plastic product such as a cross flow fan in which a large number of thin plates are arranged radially side by side with gaps between them when viewed from the side, the front and back two surfaces a and b of the thin plates are
A plastic product such as a cross flow fan, which is made of a large number of thin plates arranged in a radial manner with gaps between them, and is characterized by the following conditions: Condition 1 One surface a of the adjacent thin plate and this surface a
and the other opposing back surface b are both flat surfaces or flat curved surfaces having one arcuate surface curved in the same direction. Condition 2 Regarding one surface a of the adjacent thin plates, the tangential direction Ta at an arbitrary point ta radially outward from the die abutting surface C between the gap-forming die interposed between the thin plates and the die (core) interposed at the center. is parallel to the die cutting tangential direction Pt at a point p corresponding to the arbitrary point ta on the die cutting locus P where the gap forming mold is pulled out in the radially outward direction R, or in the radially outward direction R
It should be a surface that satisfies what is open to the world. Condition 3 Regarding one surface a of adjacent thin plates and the other back surface b facing each other, an arbitrary point radially outward from the mold abutment surface C between the gap forming mold interposed between the thin plates and the mold (core) interposed at the center. The tangential direction Tb at point tb is parallel to or in the radial direction R with respect to the die cutting tangential direction Pt at the point p corresponding to the arbitrary point tb on the die cutting locus P for pulling out the gap forming mold in the radially outward direction R. Be open to the surface that meets your needs.