JPH0364211B2 - - Google Patents
Info
- Publication number
- JPH0364211B2 JPH0364211B2 JP20009188A JP20009188A JPH0364211B2 JP H0364211 B2 JPH0364211 B2 JP H0364211B2 JP 20009188 A JP20009188 A JP 20009188A JP 20009188 A JP20009188 A JP 20009188A JP H0364211 B2 JPH0364211 B2 JP H0364211B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- flip
- die
- bending
- recess
- 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
- 238000005452 bending Methods 0.000 claims description 37
- 230000001154 acute effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は板材の端部を自由にしたまま、ラムの
下降方向に板材を折曲げる折曲げ型において、上
型部材の反力を利用して大きな力で板材を押えて
折曲げるようにした折曲げ型に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention utilizes the reaction force of the upper die member in a bending die that bends a plate in the downward direction of a ram while leaving the ends of the plate free. This relates to a bending die that presses and bends a plate material with great force.
［従来の技術］
従来の折曲げ型は、第８図に示すようにラムの
下端に取付けた可動上型１の前側にスプリング式
の板押え２を設けると共に、上型内に半円状で平
坦部分にＶ字状溝３を有する回転型４を配置して
いる。そして、ラムを下降させて回転型３の左側
の押え作用部４ａでワークＷを押え、さらにラム
を下降させて回転型４を右方向に回動させ、右側
の曲げ作用部４ｂでワークＷを下型ブロツク５の
凹部６に曲げ込んで縁曲げを行う構成となつてい
る。[Prior Art] As shown in Fig. 8, the conventional folding mold is equipped with a spring-type plate holder 2 on the front side of a movable upper mold 1 attached to the lower end of the ram, and a semicircular mold inside the upper mold. A rotary mold 4 having a V-shaped groove 3 is arranged in a flat part. Then, the ram is lowered to hold down the workpiece W with the presser action part 4a on the left side of the rotary mold 3, and the ram is further lowered to rotate the rotary mold 4 to the right, and the workpiece W is held with the bending action part 4b on the right side. The structure is such that the edge bending is performed by bending into the recess 6 of the lower die block 5.
［発明が解決しようとする課題］
ところで前記従来形の曲げ型は、上型に取付け
回転型４を反力によつて回動させ、回転型４先端
の曲げ作用部４ｂでワークＷを折曲げるものであ
るが、回転型４を回動さるためには、必然、回転
型４の曲げ作用部４ｂと、下型ブロツク５のコー
ナー５ａとの間に一定距離の逃げｌを設けなけれ
ばならない。[Problems to be Solved by the Invention] By the way, in the conventional bending die, the rotating die 4 attached to the upper die is rotated by reaction force, and the workpiece W is bent by the bending portion 4b at the tip of the rotating die 4. However, in order to rotate the rotary mold 4, it is necessary to provide a certain distance of relief 1 between the bending portion 4b of the rotary mold 4 and the corner 5a of the lower mold block 5.
従つて、ワークの折曲げ幅が前記逃げｌより狭
い場合には、回転型４を回動させても曲げ作用部
４ｂがワークに当接しないので、折曲げを行うこ
とができず、結局、折曲げは逃げｌより曲げ幅の
広い場合に限られるという難点がある。 Therefore, if the bending width of the workpiece is narrower than the clearance 1, even if the rotary die 4 is rotated, the bending portion 4b will not come into contact with the workpiece, so bending cannot be performed, and eventually There is a drawback that bending is limited to cases where the bending width is wider than the clearance l.
また、下型ブロツク５のコーナー５ａはワーク
の材質あるいは板厚によるスプリングバツクを考
慮して90度より僅かに鋭角に作られているが、折
曲げ完了後に型抜きをする場合、回転型の曲げ作
用部４ｂが前記コーナー５ａと干渉して、スムー
スに型抜きができないということがある。 In addition, the corner 5a of the lower die block 5 is made at an angle slightly more acute than 90 degrees in consideration of spring back caused by the material or plate thickness of the workpiece. There are cases where the action portion 4b interferes with the corner 5a, making it impossible to smoothly cut out the mold.
本発明は前記従来形の難点を排除すべくなされ
たもので、その目的とするところはワークの曲げ
幅が狭い場合であつてもワークの縁曲げが可能
で、しかも型抜きがスムースな折曲げ型を提供す
ることにある。 The present invention was made in order to eliminate the drawbacks of the conventional type, and its purpose is to enable edge bending of the workpiece even when the bending width of the workpiece is narrow, and to enable smooth bending of the workpiece. The purpose is to provide a model.
［課題を解決するための手段］
本発明の折曲げ型は、上記目的を達成するため
にラムに取付けた固定上型及び固定上型を下方に
取付けられ、はね上げ機構によつて回転自在のは
ね上げ型とからなる上型組立体と、ベツド上面に
配置した下型組立体を有し、前記はね上げ型の前
面及び後面には、アングル形状のワーク押えと補
助型をそれぞれ向い合せて昇降自在に取付けると
共に、はね上げ型の下型と対接する位置には長手
方向に下向きに開口する断面円弧状の凹部を設
け、この凹部には略半円形状の回転型を、一方の
端縁が前記ワーク押えの上面に、他方が補助型の
上面にいずれも接するようにして回転自在に嵌装
支持させ、さらに前記はね上げ型には、円弧状凹
部に隣接して張出し部を突設し、一方、下型組立
体の一側には前記張出し部に当接して折曲げ反力
を支持するガイド部を形成し、かつガイド部の反
対側には、回動自在の回転下型を配置してなるも
のである。[Means for Solving the Problems] In order to achieve the above object, the folding mold of the present invention has a fixed upper mold attached to a ram, a flip-up mold that is attached below the fixed upper mold, and is rotatable by a flip-up mechanism. It has an upper mold assembly consisting of a mold and a lower mold assembly arranged on the upper surface of the bed, and an angle-shaped work holder and an auxiliary mold are attached to the front and rear surfaces of the flip-up mold, respectively, facing each other so as to be freely raised and lowered. At the same time, a recess with an arcuate cross section opening downward in the longitudinal direction is provided at a position facing the lower mold of the flip-up mold, and a substantially semicircular rotary mold is placed in this recess, with one edge of the work holder. The upper surface of the auxiliary mold is rotatably fitted and supported so that the other side is in contact with the upper surface of the auxiliary mold, and the flip-up mold has an overhanging part protruding adjacent to the arcuate recess, while the lower mold assembly A guide part is formed on one side of the solid body to support the bending reaction force by contacting the overhanging part, and a rotatable lower mold is arranged on the opposite side of the guide part. .
［実施例］
次いで本発明について、図示の実施例に基づき
具体的に説明する。[Examples] Next, the present invention will be specifically described based on illustrated examples.
第１図は本発明の折曲げ型の断面図であつて、
ラム１０の下端に上型組立体１１を取付け、ベツ
ド１２の上に下型本体１３を設ける。 FIG. 1 is a sectional view of the folding mold of the present invention,
An upper die assembly 11 is attached to the lower end of the ram 10, and a lower die body 13 is provided on the bed 12.
前記上型組立体１１は、ラム１０にボルト１４
で固定した固定上型１５と、この下方に回動自在
に取付けられたはね上げ型１６によつて構成され
ている。 The upper die assembly 11 has bolts 14 attached to the ram 10.
It is composed of a fixed upper die 15 which is fixed in place, and a flip-up die 16 which is rotatably attached below the fixed upper die 15.
はね上げ型１６は、ラム１０の後面両側に取付
けたブラケツト１７，１７間に軸支したシヤフト
１８にアーム１９をピン止め固定し、このアーム
１９の下端部１９ａにボルト２０を用いて取付け
られている。 The flip-up type 16 has an arm 19 pinned to a shaft 18 that is pivotally supported between brackets 17, 17 attached to both sides of the rear surface of the ram 10, and is attached to the lower end 19a of the arm 19 using a bolt 20. .
前記はね上げ型１６の折曲げ線に沿う長手方向
には円弧状の凹部２１が形成されると共に、この
凹部２１に隣接して、後述する下型本体１３に形
成した凹所２２の垂直ガイド部２２ａに接するよ
うにして張出し部２３が突出形成されている。 An arc-shaped recess 21 is formed in the longitudinal direction along the bending line of the flip-up mold 16, and adjacent to this recess 21, a vertical guide portion 22a of a recess 22 formed in the lower mold body 13, which will be described later. An overhanging portion 23 is formed to protrude so as to be in contact with.
前記円弧状凹部２１は、第２図に示すように下
方に向けて開口しており、この凹部２１にはほぼ
半円形状で、平坦部にＶ状溝２４が形成された回
転型２５が嵌装されている。すなわち、第３図に
示すように回転型２５の両端面にビス２６を用い
てガイド板２７を取付け、ガイド板２７の上端に
形成した弧状フツク２８をはね上げ型１６の凹部
２１の外周に形成した弧状溝２９に係合させ、回
転型２５が角度回動可能となるよう支持してい
る。 The arc-shaped recess 21 opens downward as shown in FIG. 2, and a rotary mold 25 having a substantially semicircular shape and a V-shaped groove 24 formed in the flat part is fitted into the recess 21. equipped. That is, as shown in FIG. 3, a guide plate 27 was attached to both end surfaces of the rotary mold 25 using screws 26, and an arcuate hook 28 formed at the upper end of the guide plate 27 was formed on the outer periphery of the recess 21 of the flip-up mold 16. It is engaged with the arcuate groove 29 and supports the rotary mold 25 so as to be rotatable in angle.
さらに、はね上げ型１６の前後面には、第２図
に示すようにアングル状のワーク押え３０と補助
型３１が互いに向き合うように取付けられてい
る。 Furthermore, an angled work holder 30 and an auxiliary mold 31 are attached to the front and rear surfaces of the flip-up mold 16 so as to face each other, as shown in FIG.
前記ワーク押え３０はウエブ部分に形成した長
孔３２からはね上げ型１６に向けてストツパピン
３３を挿入し、フランジ部分に形成されたワーク
押え部３０ａの上面に凹部２１に配置した回転型
２５のワーク押え作用部２５ａが当接するように
取付けられている。 The work holder 30 has a stopper pin 33 inserted toward the flip-up die 16 from a long hole 32 formed in the web portion, and a work holder of the rotary die 25 arranged in the recess 21 on the upper surface of the work holder 30a formed in the flange portion. It is attached so that the action part 25a is in contact with it.
一方、補助型３１ははね上げ型１６の両側壁に
立設したピン３４，３４と、補助型３１の曲げ部
３１ａの両側に固定したピン３５，３５間に縮設
したスプリング３６によつて、常時上昇傾向を付
与され、回転型の曲げ作用部２５ｂが補助型の曲
げ部３１ａの内面に当接した状態で取付けられて
いる。 On the other hand, the auxiliary mold 31 is constantly operated by a spring 36 contracted between pins 34, 34 installed upright on both sides of the flip-up mold 16 and pins 35, 35 fixed on both sides of the bent portion 31a of the auxiliary mold 31. The rotating bending portion 25b is attached with an upward tendency in contact with the inner surface of the auxiliary bending portion 31a.
上記構成のはね上げ型１６は、シヤフト１８に
取付けたはね上げ機構３７によつて、ラム１０の
後面にはね上げることができるようになつてい
る。すなわち、シヤフト１８端部にレバー３７を
ピン止め固定し、このレバー３７の先端には、シ
リンダーcyのピストンロツド３８先端をピン３
９を用いて取付け、前記ロツド３８が退縮した
時、はね上げ型１６がシヤフト１８と共に回動
し、ラム１０の後面側にはね上げ収納されるので
ある。 The flip-up die 16 configured as described above can be flipped up onto the rear surface of the ram 10 by a flip-up mechanism 37 attached to the shaft 18. That is, a lever 37 is pinned and fixed to the end of the shaft 18, and the tip of the piston rod 38 of the cylinder cy is connected to the pin 3 at the tip of the lever 37.
When the rod 38 is retracted, the flip-up die 16 rotates together with the shaft 18 and is flipped up and stored on the rear side of the ram 10.
次に下型組立体１１について説明する。 Next, the lower die assembly 11 will be explained.
下型組立体１１はベツド１２上面に配置され、
上型組立体１１を構成するはね上げ型１６の後面
側に取付けた補助型３１の下面に位置する個所に
は、前記のとおり凹所２２が形成され、この凹所
２２の後端側には上型組立体１１に設けた張出し
部２３をガイドし、かつ折曲げ反力を支持するた
めの垂直ガイド部２２ａが設けられている。 The lower mold assembly 11 is arranged on the upper surface of the bed 12,
As described above, the recess 22 is formed at the lower surface of the auxiliary mold 31 attached to the rear side of the flip-up mold 16 that constitutes the upper mold assembly 11, and the rear end of this recess 22 has an upper A vertical guide portion 22a is provided for guiding the overhang portion 23 provided on the mold assembly 11 and supporting the bending reaction force.
さらに、下型組立体１１の前記凹所２２を挟ん
で、ガイド部の反対側には、回転下型４０が取付
けられている。この回転下型４０はコーナ部４０
ａがスプリングバツクを考慮して90度より僅かに
鋭角に作られており、このコーナ部４０ａが第２
図に示すようにはね上げ型１６の下面取付けたワ
ーク押え３０の先端部のほぼ直下に位置するよう
にしてピン４１を用いて、回動可能となるよう配
置されている。また前記回転下型４０の上面先端
部には、固定上型１５によつて折曲げを行う際に
用いる溝４２が設けられており、この溝４２を用
いる時には、下型組立体１１をシリンダー装置
CY2を用いてベツド１２上を摺動させ、前記溝４
２が固定上型１５の直下に位置するように調整す
る。 Furthermore, a rotary lower mold 40 is attached to the opposite side of the guide portion across the recess 22 of the lower mold assembly 11. This rotating lower die 40 has a corner portion 40
The corner 40a is made at a slightly more acute angle than 90 degrees in consideration of spring back, and this corner 40a
As shown in the figure, it is arranged so as to be rotatable using a pin 41 so as to be located almost directly below the tip of the work holder 30 attached to the lower surface of the flip-up mold 16. Further, a groove 42 is provided at the top end of the rotary lower die 40 to be used when bending is performed by the fixed upper die 15. When using this groove 42, the lower die assembly 11 is connected to a cylinder device.
CY 2 is used to slide the bed 12 onto the groove 4.
2 is positioned directly below the fixed upper mold 15.
次に上記構成を有する折曲げ機の作用について
説明する。まず、第１図に示すように上型組立体
１１のはね上げ型１６を用いた折曲げについて説
明すると、ワークＷを下型本体１３の回転下型４
０上に載せ、バツク側の突当て型（図示省略）に
より、折曲げ位置からの突出距離を規制したの
ち、ラム１０を降下させる。ラム１０の下端には
ブラケツト１７及びアーム１９によつてはね上型
１６が固定され、このはね上げ型１６の前面側に
は、ワーク押え３０が取付けられているので、ラ
ム１０の降下によりワーク押え３０の下面がワー
クＷに当接し、ワークＷを回転下型４０上に押え
込む。引続きラム１０と下降させると、はね上げ
型１６の凹部２１の嵌装した回転型２５はラム１
０の加圧力と、ワーク押え作用部２５ａに生じる
反力によつて第４図に示すように時計方向に回動
し、回転型２５の曲げ作用部２５ｂによつて補助
型３１の曲げ部３１ａがスプリング３６に抗し
て、下方に摺動しワークＷを押え込み、下型本体
１３に形成した凹所２２内で、ワークＷの縁を折
曲げる。下型本体１３に取付けた回転下型４０の
コーナ部４０ａは、図示のようにスプリングバツ
クを考慮して90度より、僅かに鋭角に作られてい
るので、ワークＷは正確に直角曲げすることが可
能であるばかりか、折曲げ中にはね上げ型１６の
端部に突出させた張出し部２３が下型本体１３に
形成した凹所２２の垂直ガイド部２２ａに接して
回転型２５を正しく回動下降させ、折曲げ反力を
支持する。 Next, the operation of the bending machine having the above configuration will be explained. First, as shown in FIG. 1, bending using the flip-up die 16 of the upper die assembly 11 will be explained.
After placing the ram 10 on the ram 10 and regulating the protrusion distance from the bending position using a back-side abutting die (not shown), the ram 10 is lowered. A spring-up mold 16 is fixed to the lower end of the ram 10 by a bracket 17 and an arm 19, and a work holder 30 is attached to the front side of the spring-up mold 16, so that when the ram 10 is lowered, the work holder is The lower surface of the rotary mold 30 contacts the workpiece W and presses the workpiece W onto the rotary lower die 40. When the ram 10 is continued to be lowered, the rotary mold 25 fitted in the recess 21 of the flip-up mold 16 moves the ram 1
As shown in FIG. 4, the bending portion 31a of the auxiliary mold 31 is rotated clockwise as shown in FIG. slides downward against the spring 36 to press down the workpiece W, and bends the edge of the workpiece W within the recess 22 formed in the lower mold body 13. The corner portion 40a of the rotary lower mold 40 attached to the lower mold body 13 is made at a slightly more acute angle than 90 degrees in consideration of spring back as shown in the figure, so the workpiece W can be accurately bent at right angles. Not only is this possible, but during bending, the overhanging part 23 protruding from the end of the flip-up mold 16 comes into contact with the vertical guide part 22a of the recess 22 formed in the lower mold body 13, so that the rotary mold 25 can be rotated correctly. It is lowered to support the bending reaction force.
一方、折曲げ終了後、ラム１０を上昇させる
と、補助型２４はスプリング３６によつて上方に
引上げられると共に、回転型２５を正常状態に復
帰させ、ワーク押え３０、補助型３１及び回転型
２５を取付けたはね上げ型１６はオープンハイト
の位置まで上昇し、型抜きが完了する。この際ワ
ークＷの板厚との関係において、補助型３１の曲
げ部３１ａが回転下型４０のコーナ部４０ａと干
渉することがあるが、回転下型４０は下型組立体
１３上にピン４１を用いて取付けられているの
で、第５図に示すようにピン４１を回動軸として
回転下型４０が上方に回動し、スムースな型抜き
を行うことが可能である。 On the other hand, when the ram 10 is raised after the bending is completed, the auxiliary mold 24 is pulled upward by the spring 36, and the rotary mold 25 is returned to its normal state. The flip-up mold 16 with the attached mold 16 rises to the open height position, and mold cutting is completed. At this time, in relation to the thickness of the workpiece W, the bent portion 31a of the auxiliary die 31 may interfere with the corner portion 40a of the rotating lower die 40. As shown in FIG. 5, the rotary lower die 40 rotates upward about the pin 41, allowing smooth die cutting.
次に固定上型１５を用いた折曲げについて説明
する。まず、シリンダーcy1のピストンロツド３
８を退縮させて、レバー３７を上方に回動させる
とシヤフト１８が回動し、このシヤフト１８にピ
ン止め固定したアーム１９及びこのアーム１９に
取付けたはね上げ型１６がラム１０の後面側には
ね上げ回動し、はね上げ型１６は、第６図に示す
ようにラム１０の後面側にはね上げ状態で支持固
定される。ついで、ベツド１２上に配置された下
型本体１３をシリンダ装置cy2を用いて移動させ、
下型本体１３に取付けた回転下型４０の溝４２が
固定上型１５の先端作用部１５ａの直下に位置す
るようにセツトする。そして、ワークＷを回転下
型４０上に載せ、バツク側の突当て型（図示省
略）により折曲げ位置からの突出距離を規制した
のち、ラム１０を降下させるとラム１０に取付け
た固定上型１５の先端作用部１５ａがワークＷを
回転下型４０の溝４２に押圧し、前記溝４２内で
ワークＷを折曲げる。折曲げが完了した後、ラム
１０を上昇させると固定上型１５はオープンハイ
トの位置まで上昇する。 Next, bending using the fixed upper die 15 will be explained. First, piston rod 3 of cylinder cy 1
When the lever 8 is retracted and the lever 37 is rotated upward, the shaft 18 is rotated, and the arm 19 pinned to the shaft 18 and the flip-up die 16 attached to this arm 19 are flipped up to the rear side of the ram 10. The flip-up die 16 is supported and fixed on the rear side of the ram 10 in a flipped-up state, as shown in FIG. Next, the lower mold body 13 placed on the bed 12 is moved using the cylinder device cy 2 ,
The rotary lower mold 40 attached to the lower mold main body 13 is set so that the groove 42 is located directly below the tip acting portion 15a of the fixed upper mold 15. Then, the workpiece W is placed on the rotating lower mold 40, and the protrusion distance from the bending position is regulated by the abutting mold on the back side (not shown), and then the ram 10 is lowered and the fixed upper mold attached to the ram 10 is fixed. The tip acting portion 15a of 15 presses the workpiece W against the groove 42 of the rotary lower mold 40, and bends the workpiece W within the groove 42. After the bending is completed, when the ram 10 is raised, the fixed upper mold 15 is raised to the open height position.
［発明の効果］
本発明は上記のとおり、はね上げ型内に回転型
を取付けると共に、前後端部にアングル状のワー
ク押えと補助型を昇降自在に、しかも前記回転型
のワーク押え作用部及び曲げ作用部がワーク押え
が補助型材の上面に接するようにして取付けたの
で、ワークの曲げ幅が狭い場合であつても、ワー
クの縁曲げを行うことができる。[Effects of the Invention] As described above, the present invention has a rotary mold installed in a flip-up mold, an angled work holder and an auxiliary mold at the front and rear ends that can be raised and lowered, and a work holder acting part and a bending mold of the rotary mold. Since the action part is attached so that the workpiece holder is in contact with the upper surface of the auxiliary profile, the workpiece can be edge bent even if the bending width of the workpiece is narrow.
さらに、下型組立体に回転下型を配置したの
で、折曲げが完了し、はね上げ型を上昇させて型
抜きをする場合、はね上げ型と回転下型が干渉し
ても、回転下型が上向きに回転してスムースな型
抜きが可能であつて、無理な型抜きによつて生じ
る上型のズレ、破損を防止することができる。 Furthermore, since the rotating lower die is placed in the lower die assembly, when the folding die is completed and the flip-up die is raised to perform die cutting, even if the flip-up die and the rotating lower die interfere, the rotating lower die will face upward. The upper die can be rotated smoothly to perform smooth die cutting, and it is possible to prevent the upper die from shifting or being damaged due to forced die cutting.
第１図は本発明の折曲げ型の縦側断面図、第２
図は回転型部分の断面図、第３図は折曲げ状態を
示す図、第４図ははね上げ型をはね上げ収納した
状態を示す図、第５図は固定上型を用いた折曲状
態を示す図、第６図ははね上げ型をラム後側には
ね上げた状態を示す断面図、第７図は同上により
ワークを折曲げた状態を示す断面図、第８図は従
来形を示す図である。
１０……ラム、１１……上型組立体、１２……
ベツド、１３……下型本体、１４，２０……ボル
ト、１５……固定上型、１６……はね上げ型、１
７……ブラケツト、１８……シヤフト、１９……
アーム、２１……凹部、２２……凹所、２２ａ…
…垂直ガイド部、２３……張出し部、２４……Ｖ
状溝、２５……回転型、２５ａ……ワーク押え作
用部、２５ｂ……曲げ作用部、２６……ビス、２
７……ガイド板、２８……弧状フツク、２９……
弧状溝、３０……ワーク押え、３０ａ……ワーク
押え部、３１……補助型、３２……長孔、３３…
…ストツパピン、３４，３５，３９，４１……ピ
ン、３６……スプリング、３７……レバー、３８
……ピストンロツド、４０……回転下型、４０…
…コーナ部、４２……溝、Ｗ……ワーク、CY1，
CY2……シリンダー装置。
Fig. 1 is a longitudinal sectional view of the folding mold of the present invention, Fig.
The figure is a sectional view of the rotary mold part, Figure 3 is a diagram showing the folded state, Figure 4 is a diagram showing the flip-up mold in a folded-up state, and Figure 5 is a diagram showing the folded state using the fixed upper mold. 6 is a sectional view showing a state in which the flip-up die is flipped up to the rear side of the ram, FIG. 7 is a sectional view showing a state in which the workpiece is bent by the same method as above, and FIG. 8 is a view showing a conventional type. 10... Ram, 11... Upper mold assembly, 12...
Bed, 13...Lower mold body, 14, 20...Bolt, 15...Fixed upper mold, 16...Flip-up mold, 1
7...Bracket, 18...Shaft, 19...
Arm, 21... recess, 22... recess, 22a...
...Vertical guide part, 23... Overhang part, 24... V
Shape groove, 25... Rotating type, 25a... Work holding action part, 25b... Bending action part, 26... Screw, 2
7... Guide plate, 28... Arc-shaped hook, 29...
Arc-shaped groove, 30... Work holder, 30a... Work holder, 31... Auxiliary mold, 32... Long hole, 33...
...Stopper pin, 34, 35, 39, 41...Pin, 36...Spring, 37...Lever, 38
...Piston rod, 40...Rotating lower mold, 40...
...Corner part, 42...Groove, W...Work, CY 1 ,
CY 2 ...Cylinder device.
Claims (1)
上型の下方に取付けられ、はね上げ機構によつて
回動自在のはね上げ型とからなる上型組立体と、
ベツド上面に配置した下型組立体を有し、 前記はね上げ型の前面及び後面には、アングル
形状のワーク押えと補助型をそれぞれ向い合せて
昇降自在に取付けると共に、はね上げ型の下型と
対接する位置には長手方向に下向きに開口する断
面円弧状の凹部を設け、この凹部には略半円形状
の回転型を、一方の端縁が前記ワーク押えの上面
に、他方が補助型の上面にいづれも接するように
して回動自在に嵌装支持させ、さらに前記はね上
げ型には円弧状凹部に隣接して張出し部を突設
し、一方、下型組立体の一側には前記張出部に当
接して折曲げ反力を支持するガイド部が形成さ
れ、かつガイド部の反対側には、回動自在の回転
下型を配置してなる折曲型。[Scope of Claims] 1. An upper mold assembly consisting of a fixed upper mold attached to a folding mold ram and a flip-up mold attached below the fixed upper mold and rotatable by a flip-up mechanism;
It has a lower mold assembly placed on the upper surface of the bed, and an angle-shaped work holder and an auxiliary mold are respectively attached to the front and rear surfaces of the flip-up mold so as to face each other and can be raised and lowered, and are in contact with the lower mold of the flip-up mold. A recess with an arcuate cross section opening downward in the longitudinal direction is provided at the position, and a roughly semicircular rotary mold is placed in this recess, one edge of which is placed on the top surface of the workpiece holder, and the other edge is placed on the top surface of the auxiliary mold. Both are rotatably fitted and supported so as to be in contact with each other, and furthermore, the flip-up mold has an overhang protruding adjacent to the arcuate recess, while the overhang is on one side of the lower mold assembly. A bending die in which a guide part is formed to support the bending reaction force by contacting the guide part, and a rotatable lower die is disposed on the opposite side of the guide part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20009188A JPH02175025A (en) | 1988-08-12 | 1988-08-12 | Bending die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20009188A JPH02175025A (en) | 1988-08-12 | 1988-08-12 | Bending die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02175025A JPH02175025A (en) | 1990-07-06 |
| JPH0364211B2 true JPH0364211B2 (en) | 1991-10-04 |
Family
ID=16418704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20009188A Granted JPH02175025A (en) | 1988-08-12 | 1988-08-12 | Bending die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02175025A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002009897A1 (en) * | 2000-07-31 | 2002-02-07 | D & D Manufacturing, Inc. | Press die assembly and method of using same |
| JP3832416B2 (en) * | 2002-02-21 | 2006-10-11 | 村田機械株式会社 | Plate processing machine with bending function |
-
1988
- 1988-08-12 JP JP20009188A patent/JPH02175025A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02175025A (en) | 1990-07-06 |
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| LAPS | Cancellation because of no payment of annual fees |