JPH07290173A - Knock-out mechanism for press forming die - Google Patents
Knock-out mechanism for press forming dieInfo
- Publication number
- JPH07290173A JPH07290173A JP8900194A JP8900194A JPH07290173A JP H07290173 A JPH07290173 A JP H07290173A JP 8900194 A JP8900194 A JP 8900194A JP 8900194 A JP8900194 A JP 8900194A JP H07290173 A JPH07290173 A JP H07290173A
- Authority
- JP
- Japan
- Prior art keywords
- work
- die
- bearing
- knockout
- progressive
- 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.)
- Pending
Links
Landscapes
- Punching Or Piercing (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ポンチとダイとの間で
ワークを打抜き，穴明け加工する順送式プレス用金型に
組み込んだノックアウト機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knockout mechanism incorporated in a progressive press die for punching and punching a work between a punch and a die.
【０００２】[0002]
【従来の技術】まず、頭記のプレス用金型に組み込んだ
従来のノックアウト機構を図２に示す。図において、１
はポンチ、２はダイ、３はダイホルダ、４はストリッ
パ、５はワーク（帯状素材）であり、ノックアウト機構
はダイ２を貫通して上下方向に移動可能に案内支持され
たノックアウトピン６と、該ノックアウトピン６を背後
からワーク５の移動通路に向けて突き出すように背後か
ら押圧する付勢ばね７と、付勢ばね７の受け座となるね
じプラグ８とから構成されている。2. Description of the Related Art First, FIG. 2 shows a conventional knockout mechanism incorporated in the above-mentioned press die. In the figure, 1
Is a punch, 2 is a die, 3 is a die holder, 4 is a stripper, 5 is a work (strip-shaped material), and the knockout mechanism includes a knockout pin 6 which is guided and supported through the die 2 so as to be vertically movable. The knockout pin 6 is composed of an urging spring 7 that urges the knockout pin 6 from behind so as to project toward the moving path of the work 5, and a screw plug 8 that serves as a seat for the urging spring 7.
【０００３】かかる構成の金型によるプレス動作は周知
であり、金型を開いた状態で矢印Ｐで示す順送方向にワ
ーク５が送り込まれると、ストリッパ４が下降してワー
ク５をダイ２に押さえつける。これによりノックアウト
ピン６が付勢ばね８に抗してピンガイド穴の中に没入す
るように後退する。この状態でパンチ１が下降してワー
ク５をプレス加工し、これにワークの順送り操作と組合
わせて所定の形状に打ち抜き，穴明け加工を行った後、
裁断してワーク５を所定の製品長さに分断する。続い
て、ストリッパ４が上方に引き上げられると、付勢ばね
７のばね力でノックアウトピン６の先端がダイ２から突
出してワーク５を押し上げ、プレス金型から離型させ
る。また、打抜き加工，離型の済んだワーク（製品）５
はプレス金型から引出して次工程に搬送されるととも
に、次の新しいワークが金型内に送り込まれて前記のプ
レス加工を繰り返す。The pressing operation by the die having such a structure is well known. When the work 5 is fed in the forward direction indicated by the arrow P with the die open, the stripper 4 descends and the work 5 is placed on the die 2. Hold down. As a result, the knockout pin 6 retracts against the biasing spring 8 so as to be retracted into the pin guide hole. In this state, the punch 1 descends to press the work 5, and in combination with the work forward operation, the work 5 is punched into a predetermined shape and punched.
It cuts and divides the work 5 into a predetermined product length. Subsequently, when the stripper 4 is pulled up, the tip of the knockout pin 6 projects from the die 2 by the spring force of the biasing spring 7 to push up the work 5 and release it from the press die. Also, the work (product) 5 that has been punched and released.
Is pulled out from the press die and conveyed to the next step, and the next new work is fed into the die to repeat the above-mentioned press working.
【０００４】図３はプレス加工製品の一例として、パワ
ートランジスタモジュールの放熱ベース９を示す。該放
熱ベース９は軟銅を材料に所定の長さ寸法に裁断され、
かつ両端には取付け用のボルト穴９ａがプレスにより穴
明け加工されている。FIG. 3 shows a heat dissipation base 9 of a power transistor module as an example of a pressed product. The heat radiating base 9 is made of soft copper and cut into a predetermined length.
Moreover, bolt holes 9a for mounting are drilled at both ends by pressing.
【０００５】[0005]
【発明が解決しようとする課題】ところで、前記した従
来のノックアウト機構では、ワークの取出し，送り込み
の際に次記のような問題が派生する。すなわち、金型の
開いた状態でワーク５を矢印Ｐ方向に順送すると、ダイ
２から突出したノックアウトピン６の先端がワーク５の
下面に接触して擦りつけるようになる。そのために、ワ
ーク５が硬質金属である場合に問題になることはない
が、図３で例示したパワートランジスタモジュールの放
熱ベース（軟銅製）９のように、ワーク５の素材が軟質
金属（軟銅，アルミなど）である場合には、ノックアウ
トピン６に擦られてワーク５の表面に掻き傷が生じ、そ
の傷の痕跡が製品に対する外観不良の欠陥となる。By the way, in the above-mentioned conventional knockout mechanism, the following problems arise when the work is taken out and fed. That is, when the work 5 is fed in the direction of the arrow P with the mold opened, the tip of the knockout pin 6 protruding from the die 2 comes into contact with the lower surface of the work 5 and rubs against it. Therefore, there is no problem when the work 5 is a hard metal, but the work 5 is made of a soft metal (soft copper, such as the heat dissipation base (made of soft copper) 9 of the power transistor module illustrated in FIG. In the case of aluminum or the like), the surface of the work 5 is scratched by being rubbed by the knockout pin 6, and the trace of the scratch becomes a defect in the appearance of the product.
【０００６】本発明は上記の点にかんがみなされたもの
であり、その目的は前記課題を解決し、素材が軟質金属
であってもワークに擦り傷を与えることなく離型，順送
が行えるようにしたプレス用金型のノックアウト機構を
提供することにある。The present invention has been made in view of the above points, and an object of the present invention is to solve the above-mentioned problems and to enable mold release and progressive delivery without scratching the work even if the material is a soft metal. The object is to provide a knockout mechanism for the pressed die.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明によるノックアウト機構は、ワークの順送方
向に回転自在な回転体を先端に備えたノックアウト部材
と、該ノックアウト部材をワークの順送通路へ向けて突
き出す付勢ばねとから構成するものとする。また、前記
のノックアウト機構は具体的に次記のような態様で実施
できる。In order to achieve the above-mentioned object, a knockout mechanism according to the present invention is a knockout member having a rotating body at its tip, which is rotatable in the forward direction of a work, and the knockout member of the work. It shall consist of an urging spring protruding toward the progressive passage. The knockout mechanism described above can be specifically implemented in the following modes.
【０００８】（１）回転体がベアリングであり、該ベア
リングを上下方向に移動可能に案内支持された支軸に取
付け、付勢ばねのばね力でベアリングの周面がワークの
順送通路に向けて突き出るように前記支軸を背後から押
圧するように組立てる。 （２）ベアリング，支軸，付勢ばね，およびベアリング
の突出し高さを規制する支軸ストッパをダイホルダ側に
組み込む。(1) The rotating body is a bearing, and the bearing is mounted on a support shaft that is guided and supported so as to be movable in the vertical direction, and the peripheral surface of the bearing is directed to the progressive passage of the work by the spring force of the biasing spring. Assemble so that the support shaft is pressed from behind so that it protrudes. (2) Install the bearing, support shaft, biasing spring, and support shaft stopper that regulates the protruding height of the bearing on the die holder side.
【０００９】[0009]
【作用】上記の構成により、ノックアウト機構のベアリ
ング（回転体）は、打ち抜き加工時にはダイの上に押し
つけられたワークによりダイの内方に後退しており、加
工後にストリッパを引き上げると、付勢ばねのばね力で
ベアリングがダイから突き出してワークを金型から離型
する。また、この状態でワークを順送すると、ワークの
表面に接触しているベアリングがワークの移動に従動し
て回転する。したがって、ワークの面が擦られることが
なく、ワークの素材が軟銅，アルミなどの軟質金属であ
っても、その表面に擦り傷などの欠陥が発生することが
ない。With the above structure, the bearing (rotating body) of the knockout mechanism is retracted inward of the die by the work pressed against the die during punching, and when the stripper is pulled up after machining, the biasing spring The spring force causes the bearing to stick out of the die and release the work from the die. Further, when the work is sequentially fed in this state, the bearing in contact with the surface of the work rotates following the movement of the work. Therefore, the surface of the work is not rubbed, and even if the material of the work is a soft metal such as annealed copper or aluminum, a defect such as a scratch does not occur on the surface.
【００１０】[0010]
【実施例】以下、本発明の実施例を図１に基づいて説明
する。なお、図１で図２と対応する同一部材には同じ符
号が付してある。図１において、プレス用金型に組み込
んだノックアウト機構は、ワーク５の順送り方向（矢印
Ｐ）に回転方向を合わせて配した左右一対のベアリング
１０と、ベアリング１０を支持した上下動が可能な支軸
１１と、支軸１１を下方から押上げ付勢する付勢ばね
（コイルスプリング）７と、支軸１１の昇降ガイドを兼
ねた支軸ストッパ１２とからなり、これら各部材がダイ
２，およびダイホルダ３の内部に組み込まれている。そ
して、前記の支軸ストッパ１２でベアリング１０がダイ
２から上方の順送通路に突き出す寸法を規制している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the same members as those in FIG. 2 are designated by the same reference numerals. In FIG. 1, a knockout mechanism incorporated in a press die is composed of a pair of left and right bearings 10 arranged so that the rotation direction is aligned with the forward feed direction (arrow P) of the work 5, and a support that supports the bearing 10 and can move up and down. It comprises a shaft 11, an urging spring (coil spring) 7 for urging and pushing up the support shaft 11 from below, and a support shaft stopper 12 which also functions as an elevating guide of the support shaft 11, and these members are the die 2, and It is incorporated inside the die holder 3. The bearing stopper 10 regulates the dimension of the bearing 10 protruding from the die 2 to the upper progressive passage.
【００１１】かかる構成によるノックアウト機構の動作
は、図２で述べたノックアウトピンと同様であり、プレ
ス加工の後にストリッパ４を引き上げると、付勢ばね７
のばね力でベアリング１０がダイ２から突出してワーク
５を離型させる。そして、この状態でワーク５を矢印Ｐ
方向に順送すると、ワーク５はベアリング１０の周面と
接触しながら移動することになるが、この場合に支軸１
１に支えられているベアリング１０はワーク５の移動に
連れて自由に回転する。したがって、ワーク自身が擦ら
れることがなく、その素材が軟銅，アルミなどの軟質金
属であっても、離型動作に伴う表面の打ち痕は勿論のこ
と、擦り傷などの欠陥が生じるおそれは全くなくなる。The operation of the knockout mechanism having such a structure is the same as that of the knockout pin described in FIG. 2, and when the stripper 4 is pulled up after the press working, the biasing spring 7 is pressed.
The spring force causes the bearing 10 to project from the die 2 and release the work 5. Then, in this state, the work 5 is moved to the arrow P
When the work piece 5 is fed in the direction, the work piece 5 moves while coming into contact with the peripheral surface of the bearing 10.
The bearing 10 supported by 1 freely rotates as the work 5 moves. Therefore, the work itself is not rubbed, and even if the material is a soft metal such as annealed copper or aluminum, there is no possibility of causing scratches on the surface as well as scratches on the surface due to the releasing operation. .
【００１２】[0012]
【発明の効果】以上述べたように、本発明によれば、順
送式プレス用金型に組み込んだノックアウト機構を、ワ
ークの順送方向に回転自在な回転体を先端に備えたノッ
クアウト部材と、該ノックアウト部材をワークの順送通
路へ向けて突き出す付勢ばねとから構成したことによ
り、軟銅，アルミなどの軟質金属を素材としたワークを
金型内でプレス加工，離型，順送する工程でワークに打
ち痕，擦り傷を付けることがなく、これにより従来のノ
ックアウトピンで問題となっていた製品の外観不良を防
止し、良品率の向上に大きく貢献できる。As described above, according to the present invention, the knockout mechanism incorporated in the progressive press die is provided with a knockout member having a rotating body rotatable at the forward direction of the workpiece. Since the knockout member is composed of an urging spring protruding toward the progressive passage of the workpiece, the workpiece made of a soft metal such as annealed copper or aluminum is pressed, released from the die, and progressively fed. No scratches or scratches are made on the work during the process, which prevents the defective appearance of products, which has been a problem with conventional knockout pins, and greatly contributes to the improvement of the yield rate.
【図１】本発明の実施例によるノックアウト機構の構成
図であり、（ａ）は側面図、（ｂ）は正面図FIG. 1 is a configuration diagram of a knockout mechanism according to an embodiment of the present invention, in which (a) is a side view and (b) is a front view.
【図２】従来におけるノックアウト機構の構成図FIG. 2 is a block diagram of a conventional knockout mechanism.
【図３】プレス加工された製品例の外観斜視図FIG. 3 is an external perspective view of a pressed product example.
１ ポンチ ２ ダイ ３ ダイホルダ ４ ストリッパ ５ ワーク ７ 付勢ばね １０ ベアリング １１ 支軸 １２ 支軸ストッパ 1 Punch 2 Die 3 Die Holder 4 Stripper 5 Workpiece 7 Energizing Spring 10 Bearing 11 Spindle 12 Spindle Stopper
Claims (3)
打抜き，穴明け加工する順送式プレス用金型に組み込ん
だノックアウト機構であって、ワークの順送方向に回転
自在な回転体を先端に備えたノックアウト部材と、該ノ
ックアウト部材をワークの順送通路へ向けて突き出す付
勢ばねとから構成したことを特徴とするプレス用金型の
ノックアウト機構。1. A knockout mechanism incorporated in a progressive press die for punching, punching, and punching a work between a punch and a die, the rotary body being rotatable in the forward direction of the work. A knockout mechanism for a press die, comprising: a knockout member having a front end and an urging spring that projects the knockout member toward a progressive passage of a work.
て、回転体がベアリングであり、該ベアリングを上下方
向に移動可能に案内支持された支軸に取付け、付勢ばね
のばね力でベアリングの周面がワークの順送通路に向け
て突き出るように前記支軸を背後から押圧するようにし
たことを特徴とするプレス用金型のノックアウト機構。2. The knockout mechanism according to claim 1, wherein the rotating body is a bearing, and the bearing is attached to a support shaft that is guided and supported so as to be movable in the vertical direction, and the peripheral surface of the bearing is supported by the spring force of a biasing spring. A knockout mechanism for a press die, wherein the support shaft is pressed from behind so as to project toward the progressive passage of the work.
て、ベアリング，支軸，付勢ばね，およびベアリングの
突出し高さを規制する支軸ストッパをダイホルダ側に組
み込んだことを特徴とするプレス用金型のノックアウト
機構。3. The press die according to claim 2, wherein a bearing, a support shaft, an urging spring, and a support shaft stopper for restricting a protruding height of the bearing are incorporated in the die holder side. Knockout mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8900194A JPH07290173A (en) | 1994-04-27 | 1994-04-27 | Knock-out mechanism for press forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8900194A JPH07290173A (en) | 1994-04-27 | 1994-04-27 | Knock-out mechanism for press forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07290173A true JPH07290173A (en) | 1995-11-07 |
Family
ID=13958575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8900194A Pending JPH07290173A (en) | 1994-04-27 | 1994-04-27 | Knock-out mechanism for press forming die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07290173A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101520802B1 (en) * | 2014-05-20 | 2015-05-21 | 주식회사 범천정밀 | Separating apparatus for materials |
| CN105291464A (en) * | 2015-11-20 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Punching machine for rubber mat machining |
| CN106607521A (en) * | 2016-12-26 | 2017-05-03 | 安徽江淮汽车集团股份有限公司 | A die unloading mechanism |
| CN106734598A (en) * | 2016-11-29 | 2017-05-31 | 金牌模具（常熟）有限公司 | It is a kind of to stablize the stamping mold for skidding off product |
| CN110586749A (en) * | 2019-03-01 | 2019-12-20 | 张潇 | Blanking die |
| CN112007985A (en) * | 2020-09-14 | 2020-12-01 | 江苏鸿基金属制品有限公司 | Hole flanging processing die for automobile die metal stamping part |
-
1994
- 1994-04-27 JP JP8900194A patent/JPH07290173A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101520802B1 (en) * | 2014-05-20 | 2015-05-21 | 주식회사 범천정밀 | Separating apparatus for materials |
| WO2015178675A1 (en) * | 2014-05-20 | 2015-11-26 | 주식회사 범천정밀 | Apparatus for removing progressive processing material from mold |
| CN105291464A (en) * | 2015-11-20 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Punching machine for rubber mat machining |
| CN106734598A (en) * | 2016-11-29 | 2017-05-31 | 金牌模具（常熟）有限公司 | It is a kind of to stablize the stamping mold for skidding off product |
| CN106607521A (en) * | 2016-12-26 | 2017-05-03 | 安徽江淮汽车集团股份有限公司 | A die unloading mechanism |
| CN110586749A (en) * | 2019-03-01 | 2019-12-20 | 张潇 | Blanking die |
| CN112007985A (en) * | 2020-09-14 | 2020-12-01 | 江苏鸿基金属制品有限公司 | Hole flanging processing die for automobile die metal stamping part |
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