JPS598799U

JPS598799U - Punching mold

Info

Publication number: JPS598799U
Application number: JP10478082U
Authority: JP
Inventors: 榎　芳雄; 青山　隆夫
Original assignee: 松下電器産業株式会社
Priority date: 1982-07-09
Filing date: 1982-07-09
Publication date: 1984-01-20

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はフレキシブ／し磁気ディスクの平面図、第２図
ａは従来の上金型の断面図、ｂは下金型の断面図、第３
図〜第５図は本考案の実施の一例を示し、第３図ａは上
金型の断面図、ｂは同底面図、第４図ａは下金型の断面
図、ｂは同平面図、第５図ａ〜ｄは打抜過程の説明図で
ある。２１・・・・・・基体、２２・・・・・・円柱部、２３
・・・・・・孔、２４・・−・・・ポンチ、２５・・・
・・・大径部、２６・・・・・・罫形打抜用ダイ、２７
・・・・・・中径部、２２８・・・・・・ノックアウト
、２９・・・・・・折曲部、３０・・・・・・弾性ゴム
ブロック、３１・・・・・・バッキングプレート、３２
・・・・・・ポンチホルダー、３３・・・・・・ボルト
、３４・・・・・・外形打抜用ポンチ、３５．３６・・
・・・・孔、３７・・・・・・ノックアウト、３８・・
・・・・孔、３９・・・・・・環状部材、４０・・・・
・・ストリッパ、４１．４＝２・・・・・・弾性ゴムブ
ロック、４３・・・・・・ボルト、４４・・・・・・グ
イホルダー、４５・・・・・・磁気シート、４６・・・
・・・ブランク、４７・・・・・・抜残シート、４８・
・・・・・抜きかす。Figure 1 is a plan view of a flexible magnetic disk, Figure 2 a is a sectional view of a conventional upper mold, b is a sectional view of a lower mold, and Figure 3 is a sectional view of a conventional upper mold.
5 to 5 show an example of the implementation of the present invention, FIG. 3 a is a sectional view of the upper mold, b is a bottom view of the same, FIG. 4 a is a sectional view of the lower mold, and FIG. 4 b is a plan view of the same. , FIGS. 5a to 5d are explanatory diagrams of the punching process. 21...Base body, 22...Cylindrical part, 23
...hole, 24....punch, 25...
... Large diameter part, 26 ... Ruled punching die, 27
...Medium diameter part, 228...Knockout, 29...Bent part, 30...Elastic rubber block, 31...Backing plate , 32
...Punch holder, 33 ... Bolt, 34 ... Punch for punching the outside shape, 35.36 ...
...hole, 37...knockout, 38...
... Hole, 39 ... Annular member, 40 ...
... Stripper, 41.4=2 ... Elastic rubber block, 43 ... Bolt, 44 ... Gui holder, 45 ... Magnetic sheet, 46 ...・・・
...Blank, 47...Remaining sheet, 48.
...Removed scum.

Claims

[Scope of utility model registration request]

A base made in the form of concentric cylinders with at least three stages of different diameters, the smallest diameter cylindrical part at the lower end being used as a center hole punch, and a medium diameter part of the base parallel to the axis of the base. another punch that fits into the hole penetrating the base body, a die for punching the outer shape that is fixed in a fitted state with the side surface of the large diameter part of the base body, and a large diameter part of the base body in the area surrounded by this die. a knockout provided in sliding contact with the side surface of the medium diameter part between the part and the minimum diameter cylindrical part, and an elastic rubber block interposed between the large diameter part of the base body and the knockout, An upper mold configured such that the surfaces of the main parts other than the rubber block with respect to the workpiece form the same plane when no pressure is applied, and a punching hole corresponding to the minimum diameter cylindrical part and other punches on the upper surface. a punch for punching the outside shape provided with a hole to serve as a die; a stripper slidingly touching the outside surface of the second punch for punching the outside shape; and a stripper slidingly touching the inside surface of the punch for punching the outside shape corresponding to the minimum diameter cylindrical part. The main parts are a contacting knockout and an elastic rubber block that supports this knockout and the stripper, and excluding this elastic rubber block (the main parts are configured so that the surfaces of the main parts with respect to the workpiece are on the same plane when no pressure is applied). A punching die having a lower die.