JPS5944939B2 - shearing device - Google Patents
shearing deviceInfo
- Publication number
- JPS5944939B2 JPS5944939B2 JP6095176A JP6095176A JPS5944939B2 JP S5944939 B2 JPS5944939 B2 JP S5944939B2 JP 6095176 A JP6095176 A JP 6095176A JP 6095176 A JP6095176 A JP 6095176A JP S5944939 B2 JPS5944939 B2 JP S5944939B2
- Authority
- JP
- Japan
- Prior art keywords
- punch
- hole
- punched product
- punched
- punch body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、中空状打抜き製品の中空内周面を加圧しつつ
これを板材から打抜く剪断装置に係り、特に打抜き製品
の浮き上りを防止するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a shearing device for pressurizing the inner peripheral surface of a hollow punched product and punching it out of a plate material, and particularly for preventing the punched product from lifting up. It is something.
〔発明の技術的背景とその問題点〕板材の打抜き加工は
、例えば実公昭４１一１４３２号公報に示されるように
、それぞれ互いに対向する貫通孔を形成したダイおよび
ストリッパにより板材を挟圧し、上記貫通孔内を昇降移
動するポンチにより上記板材から所望の形状を打抜くよ
５にしている。[Technical Background of the Invention and Problems Therein] In the punching process of a plate material, as shown in, for example, Japanese Utility Model Publication No. 41-1432, the plate material is compressed by a die and a stripper, each having through-holes facing each other. A desired shape is punched out from the plate material using a punch that moves up and down within the through hole.
打抜き加工後の上記打抜き製品は、上記ダイの貫通孔内
を落下することが予想されるが、通常は種々の原因によ
り貫通孔内にまたは板材内に係止されることが多く、金
型としての機能が阻害されている。上記原因としては、
打抜き製品のカエリがポンチの下端部に引掛かり、ポン
チの引抜き時にこれとともに上昇し、再びもとの板材に
嵌合してしまうことや、打抜き製品がダイの貫通孔内に
摩擦的に係止されてそのまま残ることなどが考えられる
が、特に特公昭４７−３６０６４号公報の第１図中の左
側のポンチエレメントについて示されるように、内面加
圧打抜き加工においては、ポンチ本体により板材から中
空状の打抜き製品を打抜くとともに、この打抜き製品の
中空内周面をポンチ本体の先端部に装着されたポンチヘ
ッドの外周面で加圧するよ５にするので、上記ポンチ本
体およびポンチヘッドの引抜時に、打抜き製品の上方に
、この打抜き製品の上面とポンチヘッドの外周面とポン
チ本体の下端面とダイの貫通孔内周面とによつて気密的
な負圧空間が形成され、打抜き製品がこの負圧空間に吸
引されて上方に浮き上がり、ダイの貫通孔内に残つたり
、もとの板材に嵌合したりする欠点がより顕著に現われ
る。一方、前記実公昭４１−１４３２号公報にはポンチ
の打抜面に開口する空気吹出孔を設け、この吹出孔から
噴出する圧縮空気によつてポンチに付着した打抜き製品
の浮上りを防止するものが示されているが、このように
ポンチの打抜面に空気吹出孔を開口したものでは、この
吹出孔から噴出する圧縮空気が板状打抜き製品の一部分
に集中的に直接作用するため、この製品が薄板状（箔状
）の変形しやすいものである場合は、この製品が部分的
に集中作用する圧縮空気によつて変形するおそれがある
。It is expected that the punched product after the punching process will fall through the through hole of the die, but usually it will be stuck in the through hole or inside the plate material for various reasons, and it will not work as a mold. function is inhibited. The above causes are:
The burrs of the punched product may get caught on the lower end of the punch and rise with it when the punch is pulled out, causing it to fit back into the original plate material, or the punched product may become frictionally locked in the through hole of the die. However, as shown in the punch element on the left side in Figure 1 of Japanese Patent Publication No. 47-36064, in internal pressure punching, hollow shapes are removed from the plate by the punch body. While punching out the punched product, the hollow inner peripheral surface of the punched product is pressurized by the outer peripheral surface of the punch head attached to the tip of the punch body, so that when the punch body and punch head are pulled out, An airtight negative pressure space is formed above the punched product by the upper surface of the punched product, the outer peripheral surface of the punch head, the lower end surface of the punch body, and the inner peripheral surface of the through hole of the die, and the punched product is The disadvantage that the material is sucked into the pressure space and floats upward, remains in the through hole of the die, or fits into the original plate becomes more noticeable. On the other hand, the above-mentioned Japanese Utility Model Publication No. 41-1432 discloses a method in which an air blowing hole is provided in the punching surface of the punch, and the compressed air blown from the blowing hole prevents the punched product attached to the punch from floating. However, when the air outlet is opened on the punching surface of the punch, the compressed air ejected from the outlet acts intensively and directly on a part of the plate-shaped punched product. If the product is easily deformable in the form of a thin plate (foil), there is a risk that the product will be deformed by the concentrated compressed air acting locally.
このおそれは、前記特公昭４７−３６０６４号公報に示
される内面加圧打抜き加工用のポンチ本体の打抜面に同
様に空気吹出孔を開口した場合も消えず、いずれにして
も薄板状製品の打抜き加工には適さない。This fear does not disappear even when air blowing holes are similarly opened in the punching surface of the punch body for internal pressure punching shown in the above-mentioned Japanese Patent Publication No. 47-36064; Not suitable for punching.
本発明は、内面加圧打抜き加工において、ポンチ本体お
よびポンチヘツドを引抜くときに生ずる中空状の打抜き
製品の上方への浮き上がりを高圧空気によつて防止する
とともに、この高圧空気の噴出によつて上記打抜き製品
が薄板状であつても変形しないようにすることを目的と
する。The present invention uses high-pressure air to prevent upward lifting of a hollow punched product that occurs when the punch body and punch head are pulled out in internal pressure punching processing, and also prevents the above-mentioned The purpose is to prevent a punched product from deforming even if it is in the form of a thin plate.
〔発明の概要）
本発明の構成は、それぞれ互いに対向する貫通孔を形成
したダイおよびストリツバにより板材を挾圧し、上記貫
通孔内を昇降移動するポンチ本体により上記板材から中
空板の打抜き製品を打抜くとともに、この打抜き製品の
中空内周面をポンチ本体の先端部に装着されたポンチヘ
ツドの外周面で加圧する剪断装置において、ポンチ本体
を引抜く時、上記打抜き製品が途中で引掛かつてポンチ
本体から離間することによりこの打抜き製品の上方に形
成される気密的な負圧空間に、ポンチヘツド内の通孔を
経て高圧空気を圧送する。[Summary of the Invention] The structure of the present invention is such that a plate material is clamped and pressed by a die and a stripper having mutually opposing through holes, and a hollow plate punched product is punched from the plate material by a punch body that moves up and down within the through hole. In a shearing device that presses the hollow inner peripheral surface of the punched product with the outer peripheral surface of a punch head attached to the tip of the punch body, when the punch body is pulled out, the punched product gets caught in the middle and is removed from the punch body. High-pressure air is pumped through a hole in the punch head into an airtight vacuum space created above the punched product by the spacing.
上記通孔は、上記ポンチヘツドの内部にＬ字形に穿設し
てポンチヘツドの外周面に開口する。そうして、ポンチ
本体を引抜く時に、上記通孔に高圧空気を供給すると、
この空気はポンチヘツドの外周面から上記負圧空間に噴
出し、この空間内の圧を全周にわたつて瞬時に高め、こ
の全体的な圧の高まりによつて中空状の打抜き製品を下
方に押出すようにする。The through hole is formed in an L-shape inside the punch head and opens to the outer peripheral surface of the punch head. Then, when pulling out the punch body, if high pressure air is supplied to the above hole,
This air blows out from the outer peripheral surface of the punch head into the negative pressure space, instantly increasing the pressure in this space around the entire circumference, and this overall increase in pressure pushes the hollow punched product downward. Let it come out.
上記高圧空気の通孔はＬ字形に穿設してポンチへ・ツド
の外周面に開口したから、この通孔から噴出する空気が
打抜き製品を直撃するおそれがない。〔発明の実施例〕
以下、本発明の一実施例を図面に基づき詳細に説明する
。Since the high-pressure air hole is formed in an L-shape and opens on the outer circumferential surface of the punch, there is no possibility that the air ejected from the hole will directly hit the punched product. [Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.
ノ
ダイホルダ１の落下孔２にダイ３の貫通孔４を対向させ
てダイホルダ１にダイ３を設置し、このダイ３とストリ
ツパ５とにより板材６を挟圧する。A die 3 is installed in the die holder 1 with the through hole 4 of the die 3 facing the drop hole 2 of the die holder 1, and the plate material 6 is clamped between the die 3 and the stripper 5.
このときダイ３の上記貫通孔４とストリツパ５の貫通孔
７とをそれぞれ互いに対向するように設置し、これら貫
通孔４，７内をポンチ本体８が昇降移動できるようにし
、このポンチ本体８の下降時にこれで上記板材６から打
抜き製品９を打抜くようにする。この際この打抜き製品
９がリングのような中空状のものであるから、ポンチ本
体８の先端部にポンチ本体８より小径のポンチヘツド１
０を装着し、このポンチヘツド１０の外周面で中空状の
打抜き製品９の中空内周面を加圧するようにする。以上
のような内面加圧打抜き加工の装置において、上記ポン
チ本体８の中心軸部に高圧空気の供給孔１１を穿設する
とともに、上記ポンチヘツド１０の内部にＬ字形状の通
孔１２，１２を穿設し、この通孔１２，１２の一端をそ
れぞれ上記供給孔１１に開口するとともに、通孔１２，
１２の他端をそれぞれポンチヘツド１０の外周面に開口
する。At this time, the through hole 4 of the die 3 and the through hole 7 of the stripper 5 are installed so as to face each other, so that the punch body 8 can move up and down within these through holes 4 and 7. When descending, the punched product 9 is punched out from the plate material 6. At this time, since the punched product 9 is hollow like a ring, a punch head 1 with a smaller diameter than the punch body 8 is attached to the tip of the punch body 8.
0 is attached so that the outer circumferential surface of this punch head 10 pressurizes the hollow inner circumferential surface of the hollow punched product 9. In the above-described internal pressure punching device, a high-pressure air supply hole 11 is bored in the center shaft of the punch body 8, and L-shaped through holes 12 are formed inside the punch head 10. The through holes 12, 12 are opened at one end to the supply hole 11, and the through holes 12,
The other ends of the punch heads 12 are opened at the outer peripheral surface of the punch head 10, respectively.
そうしてポンチ本体８で板材６から中空状の打抜き製品
９を打抜き、ポンチ本体８およびポンチヘツド１０を引
抜こうとするとき、打抜き製品９の上方に、この打抜き
製品９の上面と、ポンチヘツド１０の外周面と、ポンチ
本体８の下端面と、ストリツパ５の貫通孔７と、板材６
の打抜き穴とによつて気密的な負圧空間１３が形成さ瓢
この負圧空間１３に吸引されて上記打抜き製品９が上方
に浮き上がろうとする。このときこの負圧空間１３に上
記供給孔１１および通孔１２，１２を介して高圧空気を
圧送し、この高圧空気の空圧で打抜き製品９を下方へ強
制的に落下させる。このとき、Ｌ字形の通孔１２から負
圧空間１３内に噴出した高圧空気のジニットはストリツ
パ５や板材６に直接衝突するが、打抜き製品９を直撃す
ることはなく、円環状の空間１３の圧を全周にわたつて
高め、この全体にわたつて均等の圧で製品９は下方に、
押出される〇なお本発明は、上記ポンチヘツド１０に相
当する円すい状の尖端をポンチ本体に一体的に形成し、
これで中空状の打抜き製品の内環面と外環面とを連続的
に打抜くようにしたものに適用してもよい。Then, when punching a hollow punched product 9 from the plate material 6 with the punch body 8 and pulling out the punch body 8 and the punch head 10, the upper surface of the punched product 9 and the punch head 10 are placed above the punched product 9. The outer peripheral surface, the lower end surface of the punch body 8, the through hole 7 of the stripper 5, and the plate material 6.
An airtight negative pressure space 13 is formed by the punched holes, and the punched product 9 tends to float upward by being sucked into the negative pressure space 13. At this time, high pressure air is forced into this negative pressure space 13 through the supply hole 11 and through holes 12, 12, and the punched product 9 is forcibly dropped downward by the pneumatic pressure of this high pressure air. At this time, the high-pressure air jetted out from the L-shaped through hole 12 into the negative pressure space 13 directly collides with the stripper 5 and the plate material 6, but does not directly hit the punched product 9, and instead The pressure is increased over the entire circumference, and the product 9 is moved downward with uniform pressure over the entire circumference.
In the present invention, a conical tip corresponding to the punch head 10 is integrally formed in the punch body,
This may be applied to a hollow punched product in which the inner ring surface and outer ring surface are continuously punched.
〔発明の効果〕本発明によれば、内面加圧打抜き加工に
おいて、加工後ポンチ本体およびポンチヘツドを引抜く
とき、打抜き製品の上方に形成される気密的な負圧空間
に通孔を経て高圧空気を圧送するようにしたから、この
高圧空気により打抜き製品の浮き上がりを阻止するとと
もに強制的に落下させることができ、かつ上記通孔をポ
ンチヘツドの内部にＬ字形に穿設してポンチヘツドの外
周面に開口したから、上記通孔から噴出する空気は、打
抜き製品の上面を直撃することなく、上記気密空間内の
圧を全体的に高め、打抜き製品の上面の全面に空気圧を
均等に作用させて製品を落下させることができ、これに
より打抜き製品が変形しやすい薄板状製品であつてもこ
れを変形させることなく取出すことができる。[Effects of the Invention] According to the present invention, when the punch body and punch head are pulled out after processing in internal pressure punching processing, high pressure air is introduced through the through hole into the airtight negative pressure space formed above the punched product. Since the high-pressure air is used to forcefully feed the punched product, it is possible to prevent the punched product from lifting up and force it to fall.The above-mentioned through hole is bored in an L-shape inside the punch head, and the hole is formed on the outer circumferential surface of the punch head. Since the air is opened, the air ejected from the hole does not directly hit the top surface of the punched product, increasing the pressure within the airtight space as a whole, and applying air pressure evenly over the entire top surface of the punched product. As a result, even if the punched product is a thin plate-like product that is easily deformed, it can be taken out without deforming it.
図は本発明の剪断装置の一実施例を示すもので、第１図
は打抜き時の縦断面図、第２図は引抜き時の縦断面図、
第３図は高圧空気の圧送時の縦断面図である。
３・・・・・・ダイ、４・・・・・・貫通壬Ｌ５・・・
・・・ストリツパ、６・・・・・・板材、７・・・・・
・貫通子！ｉ−． ８・・・・・・ポンチ本体、９・・
・・・・打抜き製品、１０・・・・・・ポンチヘツド、
１２・・・・・・通孔、１３・・・・・・負圧空間。The figures show an embodiment of the shearing device of the present invention, in which Fig. 1 is a longitudinal cross-sectional view during punching, Fig. 2 is a longitudinal cross-sectional view during drawing,
FIG. 3 is a longitudinal cross-sectional view when high-pressure air is pumped. 3... Die, 4... Penetration bottom L5...
... Stripper, 6... Board material, 7...
・Penetrator! i-. 8...Punch body, 9...
...Punching product, 10...Punch head,
12...Through hole, 13...Negative pressure space.
Claims (1)
びストリッパにより板材を挾圧し、上記貫通孔内を昇降
移動するポンチ本体により上記板材から中空状の打抜き
製品を打抜くとともに、この打抜き製品の中空内周面を
ポンチ本体の先端部に装着されたポンチヘッドの外周面
で加圧する剪断装置において、ポンチ本体を引抜く時途
中で引掛かつてポンチ本体から離間する打抜き製品の上
方に形成される気密的な負圧空間に高圧空気を圧送する
通孔を、上記ポンチヘッドの内部にＬ字形に穿設してポ
ンチヘッドの外周面に開口したことを特徴とする剪断装
置。1 A plate material is clamped by a die and a stripper each having mutually opposing through holes, and a hollow punched product is punched from the plate material by a punch body that moves up and down within the through hole, and the hollow inner periphery of this punched product is In a shearing device that pressurizes the surface with the outer peripheral surface of a punch head attached to the tip of the punch body, an airtight negative that is formed above the punched product that gets caught in the middle of pulling out the punch body and separates from the punch body. A shearing device characterized in that an L-shaped through hole for pumping high pressure air into the pressure space is bored inside the punch head and opened on the outer peripheral surface of the punch head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6095176A JPS5944939B2 (en) | 1976-05-26 | 1976-05-26 | shearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6095176A JPS5944939B2 (en) | 1976-05-26 | 1976-05-26 | shearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52143584A JPS52143584A (en) | 1977-11-30 |
| JPS5944939B2 true JPS5944939B2 (en) | 1984-11-02 |
Family
ID=13157200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6095176A Expired JPS5944939B2 (en) | 1976-05-26 | 1976-05-26 | shearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5944939B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632319Y2 (en) * | 1988-12-21 | 1994-08-24 | 株式会社島津製作所 | Test piece punching die |
-
1976
- 1976-05-26 JP JP6095176A patent/JPS5944939B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52143584A (en) | 1977-11-30 |
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