JP3676592B2 - Work positioning device in press mold - Google Patents

Work positioning device in press mold Download PDF

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Publication number
JP3676592B2
JP3676592B2 JP29712098A JP29712098A JP3676592B2 JP 3676592 B2 JP3676592 B2 JP 3676592B2 JP 29712098 A JP29712098 A JP 29712098A JP 29712098 A JP29712098 A JP 29712098A JP 3676592 B2 JP3676592 B2 JP 3676592B2
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Prior art keywords
workpiece
die
mold
work
negative pressure
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JP2000117363A (en
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博美 谷口
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/082—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles

Description

【０００１】
【発明の属する技術分野】
本発明は、板状のワークを支持する下型と、この下型に対して昇降してワークをプレス加工する上型とを備えたプレス金型に関し、特に、そのプレス加工時にワークの位置ずれを防止するための位置決め装置に関する。
【０００２】
【従来の技術】
図５は、自動車の外板パネルの端部を折り曲げるヘミング加工を行うための従来のプレス金型Ｄを示すものである。プレス金型Ｄは床面に配置された下型ＤL と、その上方に配置されて図示せぬ駆動源で下型ＤL に対して昇降駆動される上型ＤU とを備える。下型ＤL は移動不能に固定された固定ホルダ１と、ウエアプレート２を介してスライド自在に支持されてシリンダ３によって前記固定ホルダ１に対して接近・離間可能な可動ホルダ４とを備えており、これら両ホルダ１，４の上面にワークＷを支持するワーク支持面１1 ，４1 が形成される。可動ホルダ４のワーク支持面４1 の端部にはダイ５が固定されており、予め曲げ加工されたワークＷのフランジＦが前記ダイ５に臨んでいる。
【０００３】
可動ホルダ４の上面にウエアプレート６を介してカムスライド７がスライド自在に支持されており、このカムスライド７から水平に延びるガイドロッド８が可動ホルダ４の上面に固定したヒールブラケット９を摺動自在に貫通する。ヒールブラケット９を貫通したガイドロッド８の先端と該ヒールブラケット９との間に縮設したリターンスプリング１０により、カムスライド７はダイ５から離間する方向に付勢される。カムスライド７には、前記ダイ５と協働してワークＷのフランジＦを折り曲げるパンチ１１が設けられる。
【０００４】
一方、下型ＤL の固定ホルダ１および可動ホルダ４のワーク支持面１1 ，４1 上に支持されたワークＷの上面を押圧して移動不能に固定すべく、上型ＤU は上型ホルダ１２の下面にスプリング１３を介して支持されたパッド１４を備える。更に上型ホルダ１２の下面にはカムドライバー１５が固定されており、そこに傾斜して設けられたウエアプレート１６が、カムスライド７に傾斜して設けられたウエアプレート１７に当接可能に対向する。パッド１４を上下方向に貫通するピン孔１４1 にピン１８が摺動自在に嵌合して大径の頭部１８1 により係止されており、このピン１８の下端はワーク支持面１1 ，４1 上に支持されたワークＷの端部近傍の上面に臨んでいる。
【０００５】
而して、上型ＤU を上昇させて下型ＤL から離間させた状態で、図示せぬローダでワークＷを下型ＤL のワーク支持面１1 ，４1 上に載置した後に、上型ＤU を下型ＤL に向けて下降させる。上型ＤU の下降に伴って上型ホルダ１２に設けたカムドライバー１５のウエアプレート１６がカムスライド７に設けたウエアプレート１７を押圧すると、カムスライド７がリターンスプリング１０に抗してワークＷに向けてスライドし、該カムスライド７のパンチ１１と可動ホルダ４のダイ５との間にワークＷのフランジＦを挟圧してヘミング加工する。
【０００６】
ヘミング加工の完了後に上型ＤU を上昇させると、カムドライバー１５から離れたカムスライド７はリターンスプリング１０の弾発力で元の位置に復帰する。そしてシリンダ３で可動ホルダ４を固定ホルダ１に向けて前進させると、可動ホルダ４のダイ５がワークＷから離脱して製品の取り出しが可能になる。
【０００７】
ところで、ワークＷには若干の反りが存在するため、ワーク支持面１1 ，４1 上に支持したワークＷの端部が該ワーク支持面１1 ，４1 から僅かに浮き上がることがある。このような場合、パッド１４がワークＷの上面を押圧してワーク支持面１1 ，４1 に密着させるのであるが、サイクルタイムを短くするために上型ＤU の下降速度を速くすると、浮き上がったワークＷをパッド１４が押さえ付ける衝撃でワークＷが位置ずれしてしまい、加工不良が発生することがある。
【０００８】
そこで上述した従来の金型Ｄでは、上型ＤU の下降に伴ってパッド１４がワークＷの上面に当接する前に、パッド１４に上下摺動自在に支持したピン１８の下端をワークＷに当接させ、そのピン１８の自重でワークＷの端部を下方に押圧してワーク支持面１1 ，４1 からの浮き上がりを防止していた。
【０００９】
【発明が解決しようとする課題】
しかしながら上記従来のものは、ピン１８の下端がワークＷの上面に直接接触するため、ピン１８の重量や先端形状を微妙に設定しないとワークＷを傷付ける虞があった。
【００１０】
本発明は前述の事情に鑑みてなされたもので、金型によるプレス加工時にワークの端部が金型のワーク支持面から浮き上がるのを、ワークを傷付けることなく確実に防止することを目的とする。
【００１１】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載された発明は、板状のワークを支持するワーク支持面を有する下型と、この下型に対して昇降してワークをプレス加工する上型とを備えたプレス金型において、下型に設けた凹部内に、ワークの端部近傍の下面に対向する吸着部材を配置すると共に、その吸着部材を下型に位置及び角度を各々調整可能として支持し、その吸着部材を負圧発生手段に接続し、プレス加工時に吸着部材でワークを吸着して下型のワーク支持面に密着させることを特徴とする。
【００１２】
上記構成によれば、下型のワーク支持面に支持されたワークと該下型との間に隙間が存在しても、下型に設けた凹部内に配置された吸着部材でワークの端部近傍の下面を吸着することにより、ワークを下型のワーク支持面に密着させて加工不良の発生を防止することができ、しかも吸着部材はワークを押圧することなく吸着するだけなので、ワークを傷付ける虞がない。
【００１３】
また特に吸着部材を下型に、ワークに対する位置及び角度を各々調整可能として支持したことにより、下型に対する吸着部材の位置及び角度を各々調整してワークを下型に確実に密着させることができる。
【００１４】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の実施例に基づいて説明する。
図１〜図４は本発明の一実施例を示すもので、図１はプレス金型の全体側面図、図２は吸着手段の拡大斜視図、図３は負圧発生手段の拡大断面図、図４は作用の説明図である。
先ず、図１に基づいて本実施例のプレス金型Ｄの全体構造を説明する。尚、本実施例において、図５で説明した従来例に対応する部材には同一の符号が付してある。
【００１５】
本実施例はワーク支持面１1 ，４1 に支持したワークＷの端部の浮き上がりを抑えるための構成が、前記従来例と異なっている。すなわち、本実施例は従来例のピン１８を備えておらず、その代わりに下型ＤL の可動ホルダ４に形成された凹部２１内に、ワークＷの下面を負圧により吸着する吸着手段２２が配置される。
【００１６】
図２を併せて参照すると明らかなように、吸着手段２２は前記凹部２１に臨む可動ホルダ４の壁面に固定されたブラケット２３と、ブラケット２３に固定されて水平方向に延びる第１アーム２４と、第１アーム２４に連結部材２５を介して連結されて鉛直方向に延びる第２アーム２６と、第２アーム２６に連結部材２７を介して連結されて前記第１アーム２４と直交する水平方向に延びる第３アーム２８と、第３アーム２８の先端に固定された筒状部材２９と、筒状部材２９の上端に設けられた弾性材よりなる吸着部材としての吸盤３０とを備える。
【００１７】
各々の連結部材２５，２７は、外周の一部が開放した一対の短い筒状の保持部材３６，３６を、それらの軸線の角度を９０°ずらして背中合わせに溶接したもので、内部に前記第１〜第３アーム２４，２６，２８を挿通してボルト３７，３７で締め付けて固定するようになっている。従って、第１アーム２４に対する第２アーム２６の相対位置および相対角度を調整し、更に第２アーム２６に対する第３アーム２８の相対位置および相対角度を調整することにより、吸盤３０の位置および角度を任意に変化させてワーク支持面１1 ，４1 の位置および角度に一致させることができる。
【００１８】
図３を併せて参照すると明らかなように、前記筒状部材２９の下端から延びるエアーホース３１は、可動ホルダ４の側面に設けられた負圧発生手段３２に接続される。負圧発生手段３２は、高圧エアー源３４に接続された有底円筒状のダクト３３と、一端が前記筒状部材２９にエアーホース３１を介して接続されて他端がダクト３３内に延びる負圧パイプ３５とから構成されており、前記負圧パイプ３５の他端はダクト３３の軸線上に配置されて該ダクト３３の開口端に向けて開口している。而して、高圧エアー源３４から供給される高圧エアーをダクト３３から噴出させることにより、負圧パイプ３５の内部に負圧を発生させて吸盤３０に吸着力を発生させることができる。このように、工場等で容易に利用可能な高圧エアー源３４を利用することにより、負圧ポンプ等の特別の負圧発生手段を設けることなく簡単に負圧を発生させることができる。
【００１９】
次に、前述の構成を備えた本発明の実施例の作用について説明する。
【００２０】
上型ＤU を上昇させて下型ＤL から離間させると、高圧エアー源３４から負圧発生手段３２に高圧エアーが供給されて吸盤３０に吸着力が発生する。この状態で、図示せぬローダでワークＷを下型ＤL のワーク支持面１1 ，４1 上に載置すると、ワークＷの端部近傍の下面が吸盤３０に吸着されるため、ワークＷの形状に若干の歪みがあってワーク支持面１1 ，４1 の形状と厳密に一致していなくても、ワークＷの端部近傍の下面をワーク支持面１1 ，４1 に隙間なく密着させることができる。
【００２１】
この状態で上型ＤU を下型ＤL に向けて下降させると、上型ホルダ１２に設けたカムドライバー１５のウエアプレート１６がカムスライド７に設けたウエアプレート１７を押圧し、カムスライド７がリターンスプリング１０に抗してワークＷに向けスライドすることにより、カムスライド７のパンチ１１と固定ホルダ１のダイ５との間にワークＷのフランジＦが挟圧されてヘミング加工が行われる（図４参照）。ヘミング加工が行われる時、上型ＤU のパッド１４がワークＷの上面を押さえてワーク支持面１1 ，４1 上に固定し、ワークＷの位置ずれを防止する。そして上型ＤU の加工が完了すると、高圧エアー源３４から負圧発生手段３２への高圧エアーの供給が停止して吸盤３０の吸着力が解除される。
【００２２】
このように、上型ＤU の下降時にパッド１４がワークＷの上面に当接する前に、浮き上がりの発生し易いワークＷの端部近傍の下面を予め吸盤３０で吸着してワーク支持面１1 ，４1 に密着させるので、パッド１４に押圧されたワークＷが位置ずれして加工不良が発生するのを確実に防止することができる。しかも吸盤３０は弾性材で構成されているため、その吸着時にワークＷを傷付ける虞もない。
【００２３】
ヘミング加工が完了して上型ＤU が上昇するとカムドライバー１５から離れたカムスライド７がリターンスプリング１０の弾発力で元の位置に復帰するため、シリンダ３で可動ホルダ４を固定ホルダ１に向けて前進させることにより、可動ホルダ４のダイ５をワークＷから離脱させて製品を取り出すことができる。
【００２４】
以上、本発明の実施例を詳述したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
【００２５】
例えば、実施例ではヘミング加工用のプレス金型Ｄを例示したが、本発明はヘミング加工用以外の任意のプレス金型に対して適用することができる。また実施例では負圧発生手段３２が高圧エアー源３４からの高圧エアーで負圧を発生させているが、負圧ポンプ等を用いて直接負圧を発生させるものであっても良い。また吸着手段２２の数は１個に限定されず、その個数は任意である。
【００２６】
【発明の効果】
以上のように本発明によれば、下型のワーク支持面に支持されたワークと該下型との間に隙間が存在しても、下型に設けた凹部内に配置された吸着部材でワークの端部近傍の下面を吸着することにより、ワークを下型のワーク支持面に密着させて加工不良の発生を防止することができ、しかも吸着部材はワークを押圧することなく吸着するだけなので、ワークを傷付ける虞がない。
【００２７】
また特に吸着部材を下型に、ワークに対する位置及び角度を各々調整可能として支持したので、下型に対する吸着部材の位置及び角度を各々調整して、ワークを下型に確実に密着させることができる。
【図面の簡単な説明】
【図１】 プレス金型の全体側面図
【図２】 吸着手段の拡大斜視図
【図３】 負圧発生手段の拡大断面図
【図４】 作用の説明図
【図５】 従来のプレス金型の全体側面図
【符号の説明】
２１ 凹部
３０ 吸盤（吸着部材）
３２ 負圧発生手段
ＤL 下型
ＤU 上型
Ｗ ワーク[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a press mold having a lower mold that supports a plate-shaped workpiece and an upper mold that moves up and down with respect to the lower mold and presses the workpiece. The present invention relates to a positioning device for preventing the above.
[0002]
[Prior art]
FIG. 5 shows a conventional press die D for performing a hemming process for bending an end portion of an outer panel of an automobile. Press tool D includes a lower die D L placed on the floor, an upper die D U which is driven to be raised or lowered relative to the lower die D L by a driving source (not shown) disposed thereabove. The lower mold DL includes a fixed holder 1 fixed so as not to move, and a movable holder 4 that is slidably supported via a wear plate 2 and can be moved toward and away from the fixed holder 1 by a cylinder 3. Work support surfaces 1 1 and 4 1 for supporting the work W are formed on the upper surfaces of both the holders 1 and 4. An end of the workpiece support surface 4 1 of the movable holder 4 and the die 5 is fixed, the flange F of the pre-bent machined workpiece W faces to the die 5.
[0003]
A cam slide 7 is slidably supported on the upper surface of the movable holder 4 via a wear plate 6, and a guide rod 8 extending horizontally from the cam slide 7 slides on a heel bracket 9 fixed to the upper surface of the movable holder 4. Penetrate freely. The cam slide 7 is biased in a direction away from the die 5 by a return spring 10 which is contracted between the tip of the guide rod 8 penetrating the heel bracket 9 and the heel bracket 9. The cam slide 7 is provided with a punch 11 that bends the flange F of the workpiece W in cooperation with the die 5.
[0004]
On the other hand, to fix immovably to press the upper surface of the supported workpiece W on the workpiece supporting surface 1 1, 4 1 of the lower mold D L fixing holder 1 and the movable holder 4, the upper mold D U upper die A pad 14 supported on a lower surface of the holder 12 via a spring 13 is provided. Further, a cam driver 15 is fixed to the lower surface of the upper mold holder 12, and a wear plate 16 provided at an inclination is opposed to a wear plate 17 provided at an inclination on the cam slide 7. To do. A pin 18 is slidably fitted into a pin hole 14 1 penetrating the pad 14 in the vertical direction and is locked by a large-diameter head 18 1. The lower end of the pin 18 has a workpiece support surface 1 1 , 4 faces the upper surface of the end portion of the supported workpiece W on 1.
[0005]
And Thus, in a state in which to raise the upper mold D U was separated from the lower mold D L, after placing the workpiece W on the workpiece supporting surface 1 1, 4 1 of the lower die D L in unillustrated loader It is lowered toward the upper mold D U the lower die D L. When wear plate 16 of the cam driver 15 provided in the upper holder 12 with the lowering of the upper mold D U presses the wear plate 17 provided on the cam slide 7, the workpiece W and the cam slide 7 against the return spring 10 The flange F of the workpiece W is clamped between the punch 11 of the cam slide 7 and the die 5 of the movable holder 4 to perform hemming.
[0006]
Raising the upper mold D U after completion of the hemming working, the cam slide 7 away from the cam driver 15 is returned to its original position by the elastic force of the return spring 10. When the movable holder 4 is advanced toward the fixed holder 1 by the cylinder 3, the die 5 of the movable holder 4 is detached from the workpiece W, and the product can be taken out.
[0007]
Meanwhile, the workpiece W for a slight warp is present, it may end portion of the workpiece W that is supported on the workpiece support surface 1 1, 4 1 floats slightly from the workpiece support surface 1 1, 4 1. In this case, the pad 14 but in intimate contact with and presses the upper surface of the workpiece W to the workpiece support surface 1 1, 4 1, to increase the lowering speed of the upper mold D U in order to shorten the cycle time, lifted The work W may be displaced due to the impact of the pad 14 pressing the work W, and processing defects may occur.
[0008]
Therefore, in the conventional mold D described above, the lower end of the pin 18 slidably supported by the pad 14 is supported on the work W before the pad 14 comes into contact with the upper surface of the work W as the upper mold DU is lowered. The end of the workpiece W was pressed downward by its own weight of the pin 18 to prevent the workpiece 18 from lifting from the workpiece support surfaces 1 1 and 4 1 .
[0009]
[Problems to be solved by the invention]
However, since the lower end of the pin 18 is in direct contact with the upper surface of the workpiece W in the conventional device, the workpiece W may be damaged unless the weight and tip shape of the pin 18 are set delicately.
[0010]
The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to reliably prevent an end portion of a workpiece from being lifted from a workpiece support surface of a mold without damaging the workpiece during press processing using a mold. .
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 includes a lower mold having a workpiece support surface for supporting a plate-shaped workpiece, and an upper mold that moves up and down with respect to the lower mold and presses the workpiece. In a press die provided with a suction die, a suction member facing the lower surface near the end of the workpiece is disposed in a recess provided in the lower die, and the position and angle of the suction member can be adjusted to the lower die. supporting, connect the suction member in the negative pressure generating means and be adhered to the workpiece support surface of the lower mold to adsorb the workpiece by the suction member during pressing.
[0012]
According to the above configuration, even if there is a gap between the work supported by the work support surface of the lower mold and the lower mold, the end portion of the work by the suction member disposed in the recess provided in the lower mold By adsorbing the lower surface in the vicinity, the work can be brought into close contact with the work support surface of the lower mold to prevent processing defects , and the adsorbing member only adsorbs without pressing the work, thus damaging the work There is no fear.
[0013]
In particular, since the suction member is supported on the lower mold so that the position and angle with respect to the workpiece can be adjusted, the position and angle of the suction member with respect to the lower mold can be adjusted, and the work can be securely adhered to the lower mold. .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
1 to 4 show an embodiment of the present invention, FIG. 1 is an overall side view of a press die, FIG. 2 is an enlarged perspective view of an adsorption means, and FIG. 3 is an enlarged sectional view of a negative pressure generating means, FIG. 4 is an explanatory view of the operation.
First, the whole structure of the press die D of a present Example is demonstrated based on FIG. In the present embodiment, members corresponding to those of the conventional example described with reference to FIG.
[0015]
The present embodiment is different from the conventional example in the configuration for suppressing the lifting of the end portion of the work W supported on the work support surfaces 1 1 and 4 1 . That is, the present embodiment is not provided with a pin 18 of the conventional example, in a recess 21 formed in the movable holder 4 of the lower mold D L instead, suction means for suction by the negative pressure of the lower surface of the workpiece W 22 Is placed.
[0016]
As is clear from FIG. 2, the suction means 22 includes a bracket 23 fixed to the wall surface of the movable holder 4 facing the recess 21, a first arm 24 fixed to the bracket 23 and extending in the horizontal direction, A second arm 26 connected to the first arm 24 via a connecting member 25 and extending in the vertical direction, and connected to the second arm 26 via a connecting member 27 and extending in a horizontal direction perpendicular to the first arm 24. A third arm 28, a cylindrical member 29 fixed to the tip of the third arm 28, and a suction cup 30 as an adsorbing member made of an elastic material provided at the upper end of the cylindrical member 29 are provided.
[0017]
Each of the connecting members 25 and 27 is formed by welding a pair of short cylindrical holding members 36 and 36 whose outer circumferences are partially opened with their axis angles shifted by 90 ° back to back. The first to third arms 24, 26, 28 are inserted and fastened with bolts 37, 37 to be fixed. Therefore, by adjusting the relative position and relative angle of the second arm 26 with respect to the first arm 24, and further adjusting the relative position and relative angle of the third arm 28 with respect to the second arm 26, the position and angle of the suction cup 30 can be adjusted. It can be arbitrarily changed to match the position and angle of the work support surfaces 1 1 and 4 1 .
[0018]
As is clear from FIG. 3, the air hose 31 extending from the lower end of the cylindrical member 29 is connected to negative pressure generating means 32 provided on the side surface of the movable holder 4. The negative pressure generating means 32 includes a bottomed cylindrical duct 33 connected to a high-pressure air source 34 and a negative end extending into the duct 33 with one end connected to the cylindrical member 29 via an air hose 31. The other end of the negative pressure pipe 35 is arranged on the axis of the duct 33 and opens toward the opening end of the duct 33. Thus, by ejecting high pressure air supplied from the high pressure air source 34 from the duct 33, negative pressure can be generated inside the negative pressure pipe 35, and suction force can be generated in the suction cup 30. Thus, by using the high-pressure air source 34 that can be easily used in a factory or the like, it is possible to easily generate a negative pressure without providing any special negative pressure generating means such as a negative pressure pump.
[0019]
Next, the operation of the embodiment of the present invention having the above-described configuration will be described.
[0020]
When moved away by raising the upper mold D U from the lower mold D L, high pressure air suction force is generated in the suction cup 30 is supplied to the high-pressure air source 34 from the negative pressure generating means 32. In this state, when the workpiece W is not shown loader is placed on the work support surface 1 1, 4 1 of the lower die D L, since the lower surface of the end portion of the workpiece W is attracted to the suction cup 30, the workpiece W even if no there is a slight distortion of the shape coincide workpiece support surface 1 1, 4 and exactly one shape, no gap in close contact with the lower surface of the end portion of the workpiece W to the workpiece support surface 1 1, 4 1 Can be made.
[0021]
When the upper mold D U is lowered toward the lower die D L in this state, presses the wear plate 17 which wear plate 16 of the cam driver 15 provided in the upper holder 12 is provided on the cam slide 7, the cam slide 7 Is slid toward the workpiece W against the return spring 10, whereby the flange F of the workpiece W is sandwiched between the punch 11 of the cam slide 7 and the die 5 of the fixed holder 1 to perform hemming ( (See FIG. 4). When hemming working is carried out, the pad 14 of the upper mold D U is pressing the upper surface of the workpiece W is fixed on the work support surface 1 1, 4 1, to prevent positional deviation of the workpiece W. When the machining of the upper mold D U is complete, the suction force of the suction cup 30 supply of high-pressure air is stopped from the high pressure air source 34 to the negative pressure generator 32 is released.
[0022]
Thus, before the pad 14 comes into contact with the upper surface of the workpiece W when the upper mold DU is lowered, the lower surface in the vicinity of the end portion of the workpiece W that is likely to be lifted is previously sucked by the suction cup 30 and the workpiece support surface 1 1. , 4 1 , it is possible to reliably prevent the work W pressed against the pad 14 from being displaced and causing machining defects. And since the suction cup 30 is comprised with the elastic material, there is no possibility of damaging the workpiece | work W at the time of the adsorption | suction.
[0023]
Since the hemming upper mold D U complete rises cam slide 7 away from the cam driver 15 is returned to the original position by the elastic force of the return spring 10, the movable holder 4 to the stationary holder 1 in the cylinder 3 By moving forward, the die 5 of the movable holder 4 can be detached from the workpiece W and the product can be taken out.
[0024]
As mentioned above, although the Example of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.
[0025]
For example, although the press die D for hemming is exemplified in the embodiments, the present invention can be applied to any press die other than for hemming. In the embodiment, the negative pressure generating means 32 generates the negative pressure with the high pressure air from the high pressure air source 34. However, the negative pressure may be generated directly using a negative pressure pump or the like. Further, the number of the suction means 22 is not limited to one, and the number is arbitrary.
[0026]
【The invention's effect】
As described above, according to the present invention, even if there is a gap between the work supported on the work support surface of the lower mold and the lower mold, the suction member disposed in the recess provided in the lower mold. By adsorbing the lower surface near the edge of the workpiece, the workpiece can be brought into close contact with the lower workpiece support surface to prevent processing defects , and the adsorption member only adsorbs without pressing the workpiece. There is no risk of damaging the workpiece.
[0027]
In particular, since the adsorption member is supported on the lower mold so that the position and angle relative to the workpiece can be adjusted, the position and angle of the adsorption member with respect to the lower mold can be adjusted, and the workpiece can be securely adhered to the lower mold. .
[Brief description of the drawings]
1 is an overall side view of a press mold. FIG. 2 is an enlarged perspective view of an adsorption means. FIG. 3 is an enlarged cross-sectional view of a negative pressure generating means. FIG. 4 is an explanatory diagram of action. Overall side view of the [Description of symbols]
21 Recess 30 Suction cup (adsorption member)
32 Negative pressure generating means D L Lower mold D U Upper mold W Workpiece

Claims (1)

板状のワーク（Ｗ）を支持するワーク支持面（１1 ，４1 ）を有する下型（ＤL ）と、この下型（ＤL ）に対して昇降してワーク（Ｗ）をプレス加工する上型（ＤU ）とを備えたプレス金型において、
下型（ＤL ）に設けた凹部（２１）内に、ワーク（Ｗ）の端部近傍の下面に対向する吸着部材（３０）を配置すると共に、その吸着部材（３０）を下型（Ｄ L ）に位置及び角度を各々調整可能として支持し、
その吸着部材（３０）を負圧発生手段（３２）に接続し、プレス加工時に吸着部材（３０）でワーク（Ｗ）を吸着して下型（ＤL ）のワーク支持面（１1 ，４1 ）に密着させることを特徴とする、プレス金型におけるワークの位置決め装置。 A lower die (D L ) having a workpiece support surface (1 1 , 4 1 ) for supporting a plate-like workpiece (W), and the workpiece (W) is pressed by moving up and down relative to the lower die (D L ). In a press die having an upper die (D U )
The lower die recess formed in (D L) (21) inside, along with arranging the workpiece end suction member (30) that faces the lower surface in the vicinity of (W), the adsorption member (30) and lower mold (D L ) supports the position and angle as adjustable respectively,
The suction member (30) is connected to the negative pressure generating means (32), and the workpiece (W) is sucked by the suction member (30) during the press working to support the workpiece support surface ( 11 , 4) of the lower die (D L ). characterized in that for adhering to 1), the positioning device of a work in the press die.
JP29712098A 1998-10-19 1998-10-19 Work positioning device in press mold Expired - Fee Related JP3676592B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29712098A JP3676592B2 (en) 1998-10-19 1998-10-19 Work positioning device in press mold

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DE102006059963A1 (en) * 2006-12-19 2008-06-26 GM Global Technology Operations, Inc., Detroit Crimping bed, flanging device and method for flanging workpieces
JP2012045571A (en) * 2010-08-26 2012-03-08 Suzuki Motor Corp Press molding die structure and method of press molding workpiece
FR2986981B1 (en) * 2012-02-22 2014-03-28 Peugeot Citroen Automobiles Sa DEVICE FOR FOLDING SEVERAL LEGS CARRIED BY A PIECE
CN106216470B (en) * 2016-08-08 2017-10-31 浙江炜驰机械集团有限公司 Hole flanging turns over the one-shot forming apparatus of sharp edge with straight flange in a kind of part
CN111438243B (en) * 2019-12-10 2022-03-29 北京汽车集团越野车有限公司 Horizontal flanging die mechanism

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