JPH0371932A - Device for adjusting blank holding pressure for press die - Google Patents
Device for adjusting blank holding pressure for press dieInfo
- Publication number
- JPH0371932A JPH0371932A JP1208175A JP20817589A JPH0371932A JP H0371932 A JPH0371932 A JP H0371932A JP 1208175 A JP1208175 A JP 1208175A JP 20817589 A JP20817589 A JP 20817589A JP H0371932 A JPH0371932 A JP H0371932A
- Authority
- JP
- Japan
- Prior art keywords
- cam member
- wrinkle
- die
- pressure
- blank holder
- 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
- 238000003825 pressing Methods 0.000 claims abstract description 55
- 230000037303 wrinkles Effects 0.000 claims description 66
- 230000007423 decrease Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 39
- 238000000465 moulding Methods 0.000 description 23
- 239000011324 bead Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 208000018999 crinkle Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、プレス型に設けられ、成形特のしわ押え圧力
を調整する装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device provided in a press mold for adjusting the wrinkle pressing pressure during molding.
（従来の技術）
プレス加工における絞り成形特には、しわ押え面での素
材を押える力（しわ押え圧力）が成形性に大きく影響し
、しわ押え圧力が小さければしわの発生が多くなり、し
わ押え圧力か太きければしわの発生は減少するか素材に
ワレを発生しやすくなる。(Prior art) Especially in drawing forming in press working, the force that presses the material on the wrinkle presser surface (wrinkle presser pressure) has a large effect on formability.If the wrinkle presser pressure is small, wrinkles will occur more often, If the pressure is too thick, the occurrence of wrinkles will decrease or the material will be more likely to crack.
そこで、絞り成形特に素材にしわやワレか発生した場合
には、一般的に、素材板厚の増加や素材のグレードの変
更等により高いしわ押え圧力での成形性の向上を図った
り、しわ押え面に加工油を塗布したり表面処理を施すこ
とによりプレス型の成形部への素材の流入抵抗を減少さ
せて成形性の向上を図ったり、しわ押え面の近傍に木管
を設けて冷却水を流してしわ押え面の熱膨張を抑えて成
形性の向上を図るなどの対策か行なわれている。Therefore, when wrinkles or cracks occur in the material, especially in drawing forming, it is generally recommended to increase the thickness of the material, change the grade of the material, etc. to improve the formability with a high pressure to press the wrinkles, or Applying processing oil or surface treatment to the surface reduces the resistance of the material to flow into the forming part of the press die, improving formability, and installing wood pipes near the wrinkle holding surface to direct cooling water. Countermeasures are being taken to improve moldability by suppressing thermal expansion of the wrinkle-pressing surface.
しかし、素材板厚を増加させると、材料コストの上昇、
重量増加などを招き、材料グレートの変更も材料コスト
の上昇を招くという問題が生じる。素材に加工油の塗布
を行なうと、加工油を洗浄する工程か必要となり、また
、表面処理を行なう場合には、表面処理を施す工程か必
要となって、設備コストおよび製造コストの上昇を招く
という問題が生じる。さらに、しわ押え面の熱膨張を抑
えるものでも、冷却装置か必要となり設備コストの上昇
を招くという問題点かある。However, increasing the material plate thickness increases material costs and
This causes problems such as an increase in weight, and changing the material grade also causes an increase in material cost. If processing oil is applied to the material, a process of cleaning the processing oil is required, and if surface treatment is performed, a process of surface treatment is required, which increases equipment costs and manufacturing costs. A problem arises. Furthermore, even if the thermal expansion of the wrinkle-pressing surface is suppressed, a cooling device is required, resulting in an increase in equipment costs.
そこで、従来、特開昭５９−２０６１２０号公報で絞り
成形の成形性を向上させた成形装置が提案されている。Therefore, a forming apparatus with improved draw forming properties has been proposed in Japanese Patent Application Laid-Open No. 59-206120.
この装置は、第５図に示すように、上型１のしわ押え面
１ａから、素材Ｗに張力を与えるためのビート２を上下
動可能に設け、カム機構３によりビード２を下降させて
上型ｌからの突出量を調整するビート高さ制御装置を、
ポンチ４の上下動と連係して作動するように設けたもの
である。As shown in FIG. 5, this device is provided with a bead 2 that can be moved up and down for applying tension to the material W from a wrinkle pressing surface 1a of an upper mold 1, and a cam mechanism 3 lowers the bead 2 to raise it. A beat height control device that adjusts the amount of protrusion from the mold l,
It is provided to operate in conjunction with the vertical movement of the punch 4.
この構成によれば、ポンチ４の上下動と連係して作動す
るビート高さ制御装置により、ビート２のしわ押え面１
ａから下方に突出した部分の高さ寸法を変えて、成形時
に素材Ｗに生じる張力を調整してプレス型の成形部への
素材Ｗの流入を制御することにより、成形性の向上を図
ることかできる。According to this configuration, the wrinkle pressing surface 1 of the beat 2 is controlled by the beat height control device that operates in conjunction with the vertical movement of the punch 4.
To improve moldability by changing the height dimension of the part protruding downward from a to adjust the tension generated in the material W during molding and controlling the flow of the material W into the molding part of the press die. I can do it.
（発明か解決しようとする課題）
しかしながら、従来の上記成形装置では次のような問題
点を有していた。(Problems to be Solved by the Invention) However, the above conventional molding apparatus had the following problems.
上記成形装置では、しわ押え圧力とは関係なくビート２
の高さにより素材Ｗの流入を制御するものであるため、
しわ押え圧力か低い場合には、しわ押え面の間で発生し
たしわかビード２でロックされてしまいワレを発生させ
るという問題点があった。また、しわ押え圧力か高い場
合には、素材Ｗの流入抵抗か増大しワレを発生させると
いう問題点があった。In the above molding device, beat 2 is applied regardless of the wrinkle presser pressure.
Since the inflow of material W is controlled by the height of
If the wrinkle pressing pressure is low, there is a problem in that the wrinkle beads 2 generated between the wrinkle pressing surfaces are locked and cracks occur. Further, if the wrinkle pressing pressure is high, there is a problem that the resistance to the inflow of the material W increases and cracks occur.
このように、ビートの高さ寸法の調整では十分な成形性
の向上か図れず、特に、深絞り成形の場合には上記問題
点か顕著に生じる。As described above, the moldability cannot be sufficiently improved by adjusting the height of the beat, and the above-mentioned problems occur particularly in the case of deep drawing.
本発明は、以上の問題点に鑑みてなされたもので、その
目的とするところは、成形性の向上を図るために、しわ
押え圧力を調整するための装置を提供することにある。The present invention has been made in view of the above problems, and an object of the present invention is to provide a device for adjusting wrinkle pressing pressure in order to improve moldability.
（課題を解決するための手段）
本発明のプレス型用しわ押え圧力調整装置は、上型また
は下型のいずれか一方の型に、他方の型のしわ押え面に
向けて移動可能に支持された押えピンを設け、型閉めに
連動して前記押えピンを前記しわ押え面側へ押圧する押
圧手段を設け、該押圧手段と前記押えピンの間に弾性体
を介装したことを特徴とするものである。(Means for Solving the Problems) The wrinkle presser pressure adjusting device for press molds of the present invention is movably supported by either the upper die or the lower die toward the wrinkle presser surface of the other die. A presser pin is provided, a pressing means is provided for pressing the presser pin toward the wrinkle pressing surface in conjunction with mold closing, and an elastic body is interposed between the presser pin and the presser pin. It is something.
（作用）
以上の構成とすると、上型または下型のいずれか一方の
型に設けた押えピンを押圧手段により他方の型のしわ押
え面に押圧すると、押圧手段と押えピンの間に介装され
た弾性体か変形させられて、その弾性力により押えピン
か他方の型のしわ押え面を押し戻してしわ押え圧力を減
少させることかできるため、押えピンか他方の型のしわ
押え面を押圧する時期および力を適宜調整することによ
って、成形段階に応じてしわ押え圧力を任意に制御する
ことか可能となる。(Function) With the above configuration, when the presser pin provided on either the upper mold or the lower mold is pressed against the wrinkle presser surface of the other mold by the pressing means, the presser pin is interposed between the pressing means and the presser pin. The pressed elastic body is deformed, and its elastic force can push back the wrinkle pressing surface of the presser pin or the other mold to reduce the wrinkle pressing pressure. By appropriately adjusting the timing and force, it becomes possible to arbitrarily control the wrinkle pressing pressure depending on the molding stage.
たとえば、成形初期の段階における、素材のしわ押え面
によって拘束される面積か大きいときには、押えピンか
他方の型のしわ押え面を押圧する力を零または小さくす
ることにより、しわ押え圧力を大きくし、成形か進むに
従って、素材Ｗか型の成形部側に流入されてしわ押え面
て拘束される面積か減少していくのに件ない。For example, in the early stages of molding, when the area of the material being restrained by the wrinkle-pressing surface is large, the wrinkle-pressing pressure can be increased by zeroing or reducing the force pressing the presser pin or the wrinkle-pressing surface of the other mold. However, as the molding progresses, the area where the material W flows into the molding section of the mold and is restrained by the wrinkle pressing surface decreases.
押えピンか他方の型のしわ押え面を押圧する力を大きく
することにより、しわ押え圧力を徐々に小さくすること
ができる。By increasing the force with which the presser pin presses the wrinkle presser surface of the other mold, the wrinkle presser pressure can be gradually reduced.
このようにしわ押え圧力を成形段階に応して適宜制御す
ることによって、絞り成形性の向上を図ることができる
。By appropriately controlling the wrinkle pressing pressure in accordance with the forming stage in this way, drawing formability can be improved.
（実施例）
つぎに、本発明の実施例を図面に基づいて説明する。な
お、本実施例では、クツション絞り（シングルアクショ
ン絞り）用ブレス型に本発明を適用したものについて説
明する。(Example) Next, an example of the present invention will be described based on the drawings. In this embodiment, a case where the present invention is applied to a cushion diaphragm (single action diaphragm) breather type will be described.
まず、第１図および第２図に基づいて本発明の第１の実
施例を説明する。First, a first embodiment of the present invention will be described based on FIGS. 1 and 2.
プレス型５は、上型６と下型７とからなり、上型６はプ
レス機械のラム（図示せず）に取付けられている。下型
７は、下型本体８と、下型本体８に設けられ、クツショ
ンピン９を介してクツション力か伝えられるクツション
リング１Ｇとから構成されている。そして、クツション
リング１０の上面か下型７のしわ押え面１１となり、上
型６のクツションリング１０に対向する面か上型６のし
わ押え面１２となる。The press mold 5 consists of an upper mold 6 and a lower mold 7, and the upper mold 6 is attached to a ram (not shown) of a press machine. The lower mold 7 is composed of a lower mold main body 8 and a cushion ring 1G provided on the lower mold main body 8 and to which cushioning force is transmitted via a cushion pin 9. Then, the upper surface of the cushion ring 10 becomes the wrinkle pressing surface 11 of the lower mold 7, and the surface of the upper mold 6 facing the cushion ring 10 becomes the wrinkle pressing surface 12 of the upper mold 6.
上型６には、しわ押え面１２から垂直に摺動孔１３が形
成されており、摺動孔１３には押えピン１４が上下に摺
動自在に設けられている。A sliding hole 13 is formed in the upper mold 6 perpendicularly from the wrinkle pressing surface 12, and a pressing pin 14 is provided in the sliding hole 13 so as to be slidable up and down.
押えピン１４を下型７のしわ押え面１１側に押圧する押
圧手段１５は、前記摺動孔１３に移動自在に嵌挿された
第１の受動カム部材１５と、水平方向一方向（図中右方
向）に移動したときに第１の受動カム部材１６を押圧し
て下方へ移動させる第２の受動カム部材１７と、下型７
に設けられた、上型６か下降したときに第２の受動カム
部材１７を押圧して水平方向一方向へ移動させる固定カ
ム部材１８と、から構成されている。なお。押圧手段と
しては、油圧またはエア圧等により作動するシリンダを
用いて、型閉めに連動させ押えピン１４を押圧する構成
としてもよい。A pressing means 15 for pressing the presser pin 14 toward the wrinkle presser surface 11 side of the lower mold 7 is connected to a first passive cam member 15 movably inserted into the sliding hole 13 in one horizontal direction (in the figure). a second passive cam member 17 that presses the first passive cam member 16 to move it downward when moving in the right direction); and a lower mold 7.
A fixed cam member 18 is provided on the upper die 6 and presses the second passive cam member 17 to move it in one horizontal direction when the upper die 6 is lowered. In addition. As the pressing means, a cylinder operated by hydraulic pressure or air pressure may be used to press the presser pin 14 in conjunction with mold closing.
抑圧手段ｔ５の第１の受動カム部材１６と前記押えピン
１４との間にはゴムスプリング等の弾性体１９か介装さ
れている。An elastic body 19 such as a rubber spring is interposed between the first passive cam member 16 of the suppressing means t5 and the presser pin 14.
以上の構成に係る作用を説明する。The operation related to the above configuration will be explained.
素材Ｗがプレス型５内にセットされると上型６が下降し
て、上型６のしわ押え面１２と下型７のしわ押え面１１
とで素材Ｗを挟んで拘束する。When the material W is set in the press mold 5, the upper mold 6 is lowered, and the wrinkle pressing surface 12 of the upper mold 6 and the wrinkle pressing surface 11 of the lower mold 7 are pressed down.
The material W is held in between and restrained.
このとき、上型６の第２の受動カム部材１７が下型７の
固定カム部材１８に摺接するまでは、押えピン１４が押
圧手段１５により押圧されないため、クツションリング
１０に加わるクツション力かしわ押え圧力となり、比較
的大きな力で素材Ｗは押えられることになる（第１図の
状態）。At this time, the presser pin 14 is not pressed by the pressing means 15 until the second passive cam member 17 of the upper mold 6 comes into sliding contact with the fixed cam member 18 of the lower mold 7, so that the cushioning force applied to the cushion ring 10 is reduced. This results in a presser pressure, and the material W is pressed with a relatively large force (the state shown in FIG. 1).
そして、第２の受動カム部材１７が固定カム部材１８に
摺接すると第２の受動カム部材１７が水平方向一方向へ
移動させられて、第１の受動カム部材１６を下降させ、
弾性体１９を介して押えピン１４か下型７のしわ押え面
１１を押圧する。そのため、弾性体１９が弾性変形し、
その弾性力によってクツションピングＩＯが押し下げら
れてしわ押え圧力か減少させられる（第２図の状態）。Then, when the second passive cam member 17 comes into sliding contact with the fixed cam member 18, the second passive cam member 17 is moved in one horizontal direction, lowering the first passive cam member 16,
The presser pin 14 or the wrinkle presser surface 11 of the lower die 7 is pressed via the elastic body 19 . Therefore, the elastic body 19 is elastically deformed,
The cushion pin IO is pushed down by the elastic force, and the wrinkle pressing pressure is reduced (the state shown in FIG. 2).
このように、成形初期の段階において、素材Ｗのしわ押
え面１１．１２によって挟まれる面積が大きいときには
（図中Ａ範囲）、大きなしわ押え圧力で素材Ｗを拘束し
、成形が進むに従って、素材Ｗが型の成形部側へ流入さ
れてしわ押え面１１．１２によって挟まれる面積か減少
するのに応じて（図中Ｂｉ囲）、シわ押え圧力を小さく
することができる。In this way, at the initial stage of forming, when the area of the material W sandwiched between the wrinkle pressing surfaces 11 and 12 is large (range A in the figure), the material W is restrained by a large wrinkle pressing pressure, and as the forming progresses, the material As W flows into the molding part side of the mold and the area sandwiched between the wrinkle presser surfaces 11 and 12 decreases (circled by Bi in the figure), the wrinkle presser pressure can be reduced.
そして、しわ押え圧力は、各カム部材１６，１７゜１８
の形状や弾性体１９の弾性力を変更することにより成形
段階に応じて任意に設定することができる。The wrinkle pressing pressure is applied to each cam member 16, 17°18
By changing the shape of the elastic body 19 and the elastic force of the elastic body 19, it can be arbitrarily set according to the molding stage.
このように、成形段階に応じてしわ押え圧力を制御する
ことにより成形性の向上が図れるとともに、成形深さに
よって成形時の素材Ｗの流入状態が異なっても、それに
応じてしわ押え圧力を制御し、成形深さに合った適正な
しね押え圧力を選ぶこと、によって、常に安定した成形
が行なえて、しわやワレの発生を抑えることができる。In this way, it is possible to improve the formability by controlling the wrinkle presser pressure according to the forming stage, and even if the inflow state of the material W during forming differs depending on the forming depth, the wrinkle presser pressure can be controlled accordingly. However, by selecting an appropriate presser pressure that matches the molding depth, stable molding can be performed at all times and the occurrence of wrinkles and cracks can be suppressed.
つづいて、第３図および第４図に基づいて第２の実施例
を説明する。なお、上記第１の実施例と同一または相当
する部材には同一の符号を付して詳細な説明は省略する
。Next, a second embodiment will be described based on FIGS. 3 and 4. Note that the same reference numerals are given to members that are the same as or correspond to those in the first embodiment, and detailed explanations thereof will be omitted.
本実施例には、第１の実施例で説明した構成と同一の機
構のしわ押え圧力調整装置か設けられている。そして、
該装置の内側（型の成形部側）には、上型６にしわ押え
面１２から垂直にビート支持孔２０が形成されており、
ビート支持孔２０にはビード２１が上下に移動可能に嵌
挿されている。また、ビート支持孔２０にはビード２１
を上方に付勢するスプリング２２か設けられている。下
型７のしわ押え面１１には、ビード２１が上型６のしわ
押え面１２から下方へ突出したときにビート２１の先端
か当接しないように溝２３か形成されている。This embodiment is provided with a wrinkle presser pressure adjusting device having the same mechanism as that described in the first embodiment. and,
A beat support hole 20 is formed perpendicularly from the wrinkle pressing surface 12 in the upper mold 6 on the inside of the device (on the molding part side of the mold),
A bead 21 is fitted into the bead support hole 20 so as to be movable up and down. In addition, the bead 21 is provided in the bead support hole 20.
A spring 22 is provided that urges upward. A groove 23 is formed in the wrinkle pressing surface 11 of the lower mold 7 so that when the bead 21 projects downward from the wrinkle pressing surface 12 of the upper mold 6, the tip of the bead 21 does not come into contact with it.
第２の受動カム部材２４は、水平方向一方向（図中右方
向）に移動したときに、第１の受動カム部材Ｉ６とビー
ド２１の両方を下方へ移動させる形状に形成されている
。The second passive cam member 24 is formed in a shape that moves both the first passive cam member I6 and the bead 21 downward when it moves in one horizontal direction (rightward in the figure).
以上の構成に係る作用を説明する。The operation related to the above configuration will be explained.
上型６が下降して、上型６のしわ押え面１２と下型７の
しわ押え面１１とが素材Ｗを挟んで拘束する。このとき
、上型６の第２の受動カム部材２４が下型７の固定カム
部材１８に摺接するまではクツションリンク１０に加わ
るクツション力かしわ押え圧力となり、比較的大きな力
で押えられている。また、ビード２１もスプリング２２
により上方へ付勢されていて上型６のしわ押え面１２か
ら突出していない状態であるため素材Ｗにはビード２１
による張力が発生していない。（第３図の状態）。The upper mold 6 is lowered, and the wrinkle pressing surface 12 of the upper mold 6 and the wrinkle pressing surface 11 of the lower mold 7 sandwich and restrain the material W. At this time, until the second passive cam member 24 of the upper mold 6 comes into sliding contact with the fixed cam member 18 of the lower mold 7, the cushion force applied to the cushion link 10 becomes a crinkle pressing pressure, and is pressed with a relatively large force. . In addition, the bead 21 also has a spring 22.
Since the bead 21 is pressed upward by the material W and does not protrude from the wrinkle pressing surface 12 of the upper mold 6, the bead 21
No tension is generated. (Situation shown in Figure 3).
さらに上型６が下降して、第２の受動カム部材２４が固
定カム部材１８に摺接すると、第２の受動カム部材２４
が水平方向一方向へ移動させられて、第１の受動カム部
材１６を下降させ、弾性体１９を介して押えピン１４が
下型７のしわ押え面１１を押圧してクツションリンク１
０か押し下げられて、しわ押え圧力を減少させるととも
に、ビート２１か押し下げられて素材Ｗの型の成形部側
への流入抵抗を増大させて素材Ｗに張力を生じさせる。When the upper die 6 further descends and the second passive cam member 24 comes into sliding contact with the fixed cam member 18, the second passive cam member 24
is moved in one horizontal direction to lower the first passive cam member 16, and the presser pin 14 presses the wrinkle presser surface 11 of the lower mold 7 via the elastic body 19, and the cushion link 1
The beat 21 is pushed down to reduce the wrinkle pressing pressure, and the beat 21 is pushed down to increase the flow resistance of the material W into the molding section side of the mold, thereby creating tension in the material W.
このように、成形初期の段階では、素材Ｗのしわ押え面
１１．１２によって挟まれる面積が大きいため（図中ａ
範囲）、大きなしね押え圧力で素材Ｗを拘束し、成形が
進むに従って、素材Ｗか流入されてしわ押え面１１．１
２によって挟まれる面積か減少するのに応じて（図中す
範囲）、しわ押え圧力を小さくするとともに、素材Ｗに
張力を発生させることかできる。In this way, at the initial stage of forming, the area sandwiched by the wrinkle pressing surfaces 11 and 12 of the material W is large (a in the figure).
range), the material W is restrained by a large pressing pressure, and as the molding progresses, the material W flows in and wrinkles the pressing surface 11.1.
As the area sandwiched by the material W decreases (range shown in the figure), the wrinkle pressing pressure can be reduced and tension can be generated in the material W.
また、ビード２１の突出量は、各カム部材１６．１８．
２４の形状により任意に設定することができるので、突
出量を調整することによって、素材Ｗに発生させる張力
を適宜制御し、押えピン１４によるしわ押え圧力の制御
と併用することによって最適な成形条件による成形か可
能となって、常に安定した絞り成形が可能となる。Further, the amount of protrusion of the bead 21 is determined by the amount of protrusion of each cam member 16, 18.
Since the shape of 24 can be set arbitrarily, by adjusting the amount of protrusion, the tension generated in the material W can be appropriately controlled, and by using this together with the control of the wrinkle presser pressure by the presser pin 14, optimal molding conditions can be achieved. This allows stable drawing forming at all times.
なお、本実施例では、クツション絞りのプレス型に本発
明を適用したものを説明したか、ダブルアクション絞り
のプレス型にも適用することができる。この場合、プレ
ス機のラムに固定されているポンチが下降する前にアウ
タスライドか下降して、しわ押え面で素材を拘束すると
きに押えピンによってアウタスライドを押し上げるよう
にしてしわ押え圧力を低減させればよい。In this embodiment, the present invention is applied to a press die for cushion drawing, but it can also be applied to a press die for double action drawing. In this case, before the punch fixed to the ram of the press descends, the outer slide descends, and when the material is restrained on the creasing surface, the presser pin pushes the outer slide up, reducing the creasing pressure. Just let it happen.
（発明の効果）
以上詳細に説明したように本発明は、上型または下型の
いずれか一方の型に設けた押えピンが他方の型のしわ押
え面を、押圧手段により型閉めに連動し押圧することに
よって、成形段階に応じてしわ押え圧力を任意に制御す
ることができるようにしたため、従来のビートの高さ寸
法を調整し素材に発生する張力を制御して成形するもの
よりもしわやワレの発生を抑え安定した成形が可能とな
る。(Effects of the Invention) As explained in detail above, the present invention allows the presser pins provided on either the upper mold or the lower mold to move the wrinkle pressing surface of the other mold in conjunction with mold closing using a pressing means. By pressing, the wrinkle presser pressure can be arbitrarily controlled according to the molding stage, so it is possible to control wrinkles more easily than the conventional molding method in which the height of the beat is adjusted and the tension generated in the material is controlled. This enables stable molding by suppressing the occurrence of cracks and cracks.
特に深絞り成形では、素材が型の成形部に流にしわ押え
圧力を制御することによって、常に安定した成形が可能
となる。Particularly in deep drawing, stable molding is possible at all times by controlling the pressure that presses the material against wrinkles as it flows into the forming part of the mold.
第１図は、本発明のしわ押え圧力調整装置の第１の実施
例における成形途中の状態を示す縦断面図、
第２図は、第１図に示した装置におけるプレス機の下死
点位置の状態を示す縦断面図、第３図は、本発明のしわ
押え圧力調整装置の第２の実施例における成形途中の状
態を示す縦断面図。
第４図は、第１図に示した装置におけるプレス機の下死
点位置の状態を示す縦断面図、第５図は、従来の絞りプ
レスに使用された成形装置の一例を示す縦断面図である
。
６・・・上型 ７・・・下型
１１．１２−・・しわ押え面
１４・・・押えピン １５・・−押圧手段１９・・・
弾性体 Ｗ・・・素材
塙
１
前
図
第FIG. 1 is a longitudinal cross-sectional view showing a state in the middle of molding in a first embodiment of the wrinkle presser pressure adjusting device of the present invention, and FIG. 2 is a bottom dead center position of the press in the device shown in FIG. FIG. 3 is a vertical cross-sectional view showing a state in the middle of molding in the second embodiment of the wrinkle press pressure adjusting device of the present invention. FIG. 4 is a longitudinal sectional view showing the bottom dead center position of the press in the apparatus shown in FIG. 1, and FIG. 5 is a longitudinal sectional view showing an example of a forming apparatus used in a conventional drawing press. It is. 6...Upper die 7...Lower die 11.12--Wrinkle pressing surface 14...Press pin 15...-Press means 19...
Elastic body W...Material wall 1 Previous figure
Claims (1)
のしわ押え面に向けて移動可能に支持された押えピンを
設け、型閉めに連動して前記押えピンを前記しわ押え面
側へ押圧する押圧手段を設け、該押圧手段と前記押えピ
ンの間に弾性体を介装したことを特徴とするプレス型用
しわ押え圧力調整装置。(1) A presser pin movably supported toward the wrinkle presser surface of the other mold is provided on either the upper mold or the lower mold, and the presser pin is moved to the wrinkle presser in conjunction with the closing of the mold. 1. A wrinkle press pressure adjustment device for a press mold, characterized in that a press means for pressing toward the surface side is provided, and an elastic body is interposed between the press means and the press pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1208175A JPH0371932A (en) | 1989-08-11 | 1989-08-11 | Device for adjusting blank holding pressure for press die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1208175A JPH0371932A (en) | 1989-08-11 | 1989-08-11 | Device for adjusting blank holding pressure for press die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0371932A true JPH0371932A (en) | 1991-03-27 |
Family
ID=16551903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1208175A Pending JPH0371932A (en) | 1989-08-11 | 1989-08-11 | Device for adjusting blank holding pressure for press die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0371932A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5901599A (en) * | 1995-07-18 | 1999-05-11 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for sheet forming a blank using a variable bead |
| US6032506A (en) * | 1996-05-30 | 2000-03-07 | S.C. Recherche Et Developpement Groupe | Improvment to the blank holder force regulating system in a press |
| US6276185B1 (en) * | 1999-12-09 | 2001-08-21 | General Motors Corporation | Flow lock bead control apparatus and method for drawing high strength steel |
| US6416272B1 (en) | 1998-10-09 | 2002-07-09 | Toyota Shatai Kabushiki Kaisha | Wheelchair with retractable wheels for conversion to vehicle passenger seat |
| US6543848B1 (en) | 1997-09-01 | 2003-04-08 | Toyota Shatai Kabushiki Kaisha | Vehicular turning seat |
| US6557919B2 (en) * | 1997-04-03 | 2003-05-06 | Toyota Shatai Kabushiki Kaisha | Rotating vehicle seat |
| US6572172B1 (en) | 1998-09-10 | 2003-06-03 | Toyota Shatai Kabushiki Kaisha | Rotating vehicle seat |
| KR20040000990A (en) * | 2002-06-26 | 2004-01-07 | 현대자동차주식회사 | A bead pressing device in a press |
| KR100820455B1 (en) * | 2006-07-06 | 2008-04-10 | 현대자동차주식회사 | Apparatus adjusting bead force using hydrauric bead |
| US10486216B2 (en) | 2016-10-17 | 2019-11-26 | Ford Motor Company | Draw die and binder lock |
-
1989
- 1989-08-11 JP JP1208175A patent/JPH0371932A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5901599A (en) * | 1995-07-18 | 1999-05-11 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for sheet forming a blank using a variable bead |
| US6032506A (en) * | 1996-05-30 | 2000-03-07 | S.C. Recherche Et Developpement Groupe | Improvment to the blank holder force regulating system in a press |
| US6557919B2 (en) * | 1997-04-03 | 2003-05-06 | Toyota Shatai Kabushiki Kaisha | Rotating vehicle seat |
| US6543848B1 (en) | 1997-09-01 | 2003-04-08 | Toyota Shatai Kabushiki Kaisha | Vehicular turning seat |
| US6572172B1 (en) | 1998-09-10 | 2003-06-03 | Toyota Shatai Kabushiki Kaisha | Rotating vehicle seat |
| US6416272B1 (en) | 1998-10-09 | 2002-07-09 | Toyota Shatai Kabushiki Kaisha | Wheelchair with retractable wheels for conversion to vehicle passenger seat |
| US6582181B2 (en) | 1998-10-09 | 2003-06-24 | Toyota Shatai Kabushiki Kaisha | Vehicle seat |
| US6276185B1 (en) * | 1999-12-09 | 2001-08-21 | General Motors Corporation | Flow lock bead control apparatus and method for drawing high strength steel |
| KR20040000990A (en) * | 2002-06-26 | 2004-01-07 | 현대자동차주식회사 | A bead pressing device in a press |
| KR100820455B1 (en) * | 2006-07-06 | 2008-04-10 | 현대자동차주식회사 | Apparatus adjusting bead force using hydrauric bead |
| US10486216B2 (en) | 2016-10-17 | 2019-11-26 | Ford Motor Company | Draw die and binder lock |
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