JPH06328134A - Method and press brake for bending metal plate - Google Patents
Method and press brake for bending metal plateInfo
- Publication number
- JPH06328134A JPH06328134A JP13351994A JP13351994A JPH06328134A JP H06328134 A JPH06328134 A JP H06328134A JP 13351994 A JP13351994 A JP 13351994A JP 13351994 A JP13351994 A JP 13351994A JP H06328134 A JPH06328134 A JP H06328134A
- Authority
- JP
- Japan
- Prior art keywords
- closing device
- fold
- bending
- press brake
- male
- 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
Classifications
-
- 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
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，雌型とこの雌型へ進入
可能で雄型ホルダに結合される雄型とを含む曲げ装置に
より金属板を曲げる方法に関する。この曲げ装置の雄型
ホルダは，雄型が雌型から離れている上の不動作位置か
ら，雄型が雌型へ進入する下の動作位置へ垂直に移動し
て，雄型と雌型との間に挿入される金属板を曲げる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for bending a metal plate by a bending device including a female die and a male die which is capable of entering the female die and connected to a male die holder. The male die holder of this bending device moves vertically from the inoperative position where the male die is separated from the female die to the operating position below where the male die enters the female die, and the male die and the female die are moved. Bend the metal plate that is inserted between.
【０００２】特に本発明は，金属板に折曲げ溝を設ける
方法に関する。それにより，折曲げ溝の外側溝壁部分に
続く金属板部分は，まず曲げ装置により曲げられて，鋭
角をなし，それからこの鋭角が平らに押圧される。In particular, the present invention relates to a method for forming a bent groove on a metal plate. Thereby, the metal plate part following the outer groove wall part of the folding groove is first bent by the bending device to form an acute angle and then this acute angle is pressed flat.
【０００３】[0003]
【従来の技術】このような方法は，例えば扉枠用金属板
ライニング等の製造に用いられ，それにより折曲げ溝は
密封条片を受入れる。この分野又は類似の応用分野で
は，異形断面金属板部材の寸法精度についての高度の要
求を満たさねばならない。公知の方法では，経済的な理
由から小さい製造設備において通常行われるように，特
に標準プレスブレーキを曲げ操作のために使用すると，
これらの要求に応ずることは非常に困難である。Such a method is used, for example, in the manufacture of metal linings for door frames, so that the fold groove receives the sealing strip. In this field or similar fields of application, the high demands on the dimensional accuracy of profiled sheet metal members must be met. In the known method, especially when a standard press brake is used for the bending operation, as is usually done in small manufacturing facilities for economic reasons,
Meeting these demands is very difficult.
【０００４】最初にあげた公知の方法では，鋭角曲げ部
を平らに押圧するのに使用される折り目閉じ装置が，雄
型ホルダの操作区域に固定されて，曲げ装置の雌型用基
礎部材としても役立つ。雌型自体は高さ位置を調節可能
で，押圧操作を行う時，雄型が直ちに折り目閉じ装置に
当るように，側方へ移動可能である。折曲げ溝を形成す
る場合，外側溝壁部分を形成する金属板区域の予備曲げ
のため，第２の曲げ装置が使用される。この第２の曲げ
装置の雄型は，使用されない場合，外方へ揺動される。
順次に操作される２つの曲げ装置の雌型は，雄型と共に
使用される雌型と一直線をなすため，曲げ線に対して直
角な方向に側方移動可能な共通のブロツク部材に設けら
れている。従つて雌型ブロツク部材用基礎部材として役
立つ折り目閉じ装置も移動可能である。折り目閉じ装置
は押圧ブロック部材とこの押圧ブロツク部材の下にある
載置板部材とを含み，この載置板部材は突出する折畳み
突起を備えており，この折畳み突起の厚さは形成すべき
折曲げ溝の幅に等しい。折畳み突起は載置板部材の上面
から下方へ段付けされて，押圧動作の終りに押圧ブロツ
ク部材と折畳み突起との間に間隙が生ずるようにしてい
る。この間隙の幅は，処理すべき金属板の厚さの２倍に
ほぼ等しい。押圧動作中に載置板は内側溝壁を形成する
金属板部分に載り，鋭角に曲げられかつ平らに押圧され
ることにより外側溝壁を形成すべき金属板部分は，押圧
ブロツク部材と折畳み突起との間の間隙へ進入する。In the first known method, the fold-closing device used to press the sharp bends flat is fixed in the operating area of the male holder and used as the female base member of the bending device. Is also useful. The height of the female mold is adjustable, and the male mold can be moved laterally so that the male mold immediately hits the fold closing device when the pressing operation is performed. When forming the folding groove, a second bending device is used for the pre-bending of the sheet metal area forming the outer groove wall portion. The male version of this second bending device is swung outwards when not in use.
The female dies of the two bending devices that are operated sequentially are aligned with the female dies used with the male dies, so that they are mounted on a common block member that can move laterally in a direction perpendicular to the bending line. There is. The crease closing device, which thus serves as a base member for the female block member, is also movable. The fold closing device includes a pressing block member and a mounting plate member below the pressing block member, and the mounting plate member is provided with a projecting folding projection, and the thickness of the folding projection is to be formed. Equal to the width of the bend groove. The folding projection is stepped downward from the upper surface of the mounting plate member so that a gap is created between the pressing block member and the folding projection at the end of the pressing operation. The width of this gap is approximately equal to twice the thickness of the metal plate to be treated. During the pressing operation, the mounting plate is placed on the metal plate portion forming the inner groove wall, and the metal plate portion which should form the outer groove wall by being bent at an acute angle and pressed flat is formed by the pressing block member and the folding protrusion. Enter the gap between and.
【０００５】予備曲げされた金属板部分を平らに押圧す
るこの方法は，上述した折り目閉じ装置の設計及び配置
により生ずるいくつかの欠点を持つている。折り目閉じ
装置と曲げ装置の雌型ブロツク部材との組合わせ構造及
び雄型の揺動可動な配置は，このような曲げ装置により
金属板に形成される曲げ角の精度に不利な影響を及ぼ
す。同じ理由から，雌型ブロツク部材を含む折り目閉じ
装置の移動装置により満たさねばならない要求は，位置
精度に関して非常に大きい。曲げ装置と折り目閉じ装置
とを組合わせる設計は，それに応じて複雑で費用がかか
る。雄型保持力を折り目閉じ装諭へ伝達する雄型の使用
も，この点で問題となる。公知の折り目閉じ装置の使用
に伴う別の欠点は，この折り目閉じ装置が押え部材の使
用なしに動作することである。曲げ装置にある載置板部
材は，その下にある金属板部分に自重だけで載り，押圧
動作の終りにのみブロツク部材により押圧力を受けるの
で，押え部材の機能を持つていない。このように，鋭角
曲げ部を所望の精度で平らに押圧することはできない。
このような折曲げ溝の形成は，寸法が変化し，所定の公
称値からずれる可能性がある。This method of pressing the pre-bent sheet metal part flat has some drawbacks caused by the design and arrangement of the fold closure device described above. The combination structure of the fold closing device and the female block member of the bending device and the swingable arrangement of the male mold adversely affect the accuracy of the bending angle formed on the metal plate by such a bending device. For the same reason, the requirements that must be met by the moving device of the fold closing device, including the female block member, are very great with regard to position accuracy. The design of the combination of the bending device and the fold closing device is correspondingly complicated and expensive. The use of a male die to transfer the male die retention force to the fold closing garment is also problematic in this respect. Another drawback with the use of the known fold closure device is that it operates without the use of a holding member. The placing plate member in the bending device does not have a function as a holding member because the placing plate member is placed on the metal plate portion thereunder only by its own weight and is pressed by the block member only at the end of the pressing operation. In this way, the acute-angled bent portion cannot be pressed flat with desired accuracy.
The formation of such a fold groove may change in size and deviate from a given nominal value.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は，前述
した欠点のない曲げ装置により金属板を曲げる方法を提
供することである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of bending a metal plate with a bending device which does not have the above mentioned drawbacks.
【０００７】本発明の別の目的は，本発明による曲げ方
法をもつと簡単かつ確実に実施するための曲げ装置を提
供することである。Another object of the invention is to provide a bending device for carrying out the bending method according to the invention which is simple and reliable to carry out.
【０００８】本発明の更に別の目的は，高い寸法精度を
持つ折曲げ溝を金属板に形成する方法及び装置を提供す
ることである。Yet another object of the present invention is to provide a method and apparatus for forming a bent groove with high dimensional accuracy in a metal plate.
【０００９】これらの目的を達するため本発明は，雌型
とこの雌型へ進入可能で雄型ホルダに結合される雄型と
を含む曲げ装置により金属板を曲げる方法を提供する。
まず金属板片が雄型と雌型との間へ挿入され，それから
雄型が雌型の方へ操作されて，特定の要求に従つて鋭角
を持つ少なくとも１つの曲げ部を含む複数の曲げ部を金
属板片に形成する。それから予備曲げされた金属板片が
雄型と雌型との間の空間から除去され，押え部材を持つ
可動折り目閉じ装置が一時的に雄型と雌型との間の空間
へ挿入される。最後に鋭角曲げ部を持つ金属板の部分が
折り目閉じ装置へ挿入され，雄型が折り目閉じ装置の方
へ操作されて，金属板片にある鋭角曲げ部を平らに押圧
する。To achieve these objects, the present invention provides a method for bending a metal plate by a bending device including a female die and a male die that is capable of entering the female die and coupled to a male die holder.
First, a piece of metal plate is inserted between the male and female molds, and then the male mold is manipulated towards the female molds to produce a plurality of bends including at least one bend with an acute angle according to the particular requirements. Is formed into a metal plate piece. The pre-bent metal plate piece is then removed from the space between the male and female dies, and the movable fold closure device with the retainer is temporarily inserted into the space between the male and female dies. Finally, the part of the metal plate with the sharp bend is inserted into the fold closing device and the male mold is operated towards the fold closing device to press the sharp bend on the piece of metal plate flat.
【００１０】こうして折り目閉じ装置を曲げ装置にほぼ
関係なく動作させることができる。即ち雌型のみが雄型
ホルダの押圧力を特にその上面にのみ受け，雌型の動作
縁及びフランジは押圧力を受けない。更に押え部材を持
つ折り目閉じ装置の使用は，折曲げ溝の形成中における
動作精度を増大する。In this way, the folding device can be operated substantially independently of the bending device. That is, only the female die receives the pressing force of the male die holder only on its upper surface, and the operating edge and the flange of the female die do not receive the pushing force. Furthermore, the use of a fold closure device with a holding member increases the accuracy of movement during the formation of the fold groove.
【００１１】金属板片にある鋭角曲げ部を含むすべての
曲げ部は，３点曲げの原理に従つて動作しかつ調節可能
な底を持つ雌型を含む１つの曲げ装置を使用して形成さ
れるのがよい。それにより従来技術におけるように押圧
のため外方へ揺動される別の雄型は必要でない。All bends, including acute bends in sheet metal pieces, are formed using one bender that operates according to the principle of three-point bending and that includes a female mold with an adjustable bottom. It is good to Thereby, no separate male mold is required to be swung outwards for pressing as in the prior art.
【００１２】更に本発明は，雌型と，この雌型へ進入可
能で雄型ホルダに結合される雄型と，金属板片にある鋭
角曲げ部を平らに押圧する折り目閉じ装置とを含む金属
板曲げ用プレスブレーキを提供する。The present invention further includes a metal mold including a female mold, a male mold that can be inserted into the female mold and is coupled to a male mold holder, and a fold closing device that flatly presses an acute-angled bent portion of the metal plate piece. A press brake for plate bending is provided.
【００１３】折り目閉じ装置は押え部材を含み，プレス
ブレーキの側方支持部材に移動可能に支持されている。
折り目閉じ装置は，曲げ動作中に曲げ装置の動作区域外
にある不動作位置から，折り目閉じ過程中に基礎部材と
して役立つ曲げ装置の雌型上にある動作位置へ可動であ
る。それにより折り目閉じ装置は，雄型ホルダの影響を
直接受ける。The fold closing device includes a pressing member and is movably supported by a side supporting member of the press brake.
The fold closing device is movable from an inoperative position outside the working area of the bending device during the bending operation to an operating position on the female mold of the bending device which serves as a foundation member during the fold closing process. As a result, the fold closing device is directly influenced by the male holder.
【００１４】好ましい実施例によれば，折り目閉じ装置
は雄型ホルダと共同作用するラム部材及びこのラム部材
の下にある折畳み突起とを含んでいる。折畳み突起の高
さは形成すべき折曲げ溝の幅に等しい。In accordance with a preferred embodiment, the fold closure device includes a ram member cooperating with the male holder and a fold protrusion beneath the ram member. The height of the folding protrusion is equal to the width of the folding groove to be formed.
【００１５】折り目閉じ装置は押え部材に固定的に結合
される支持棒を含み，ラム部材がこの支持棒上に垂直移
動可能に支持されている。The fold closing device includes a supporting rod fixedly connected to the pressing member, and the ram member is supported on the supporting rod so as to be vertically movable.
【００１６】簡単な構造的解決策では，押え部材と折り
目閉じ装置の支持棒とが，プレスブレーキの全動作幅に
わたつて延びる異形角形支持部材によつて構成される。In a simple structural solution, the holding member and the supporting rod of the fold-closing device are constituted by a profiled rectangular support member which extends over the entire working width of the press brake.
【００１７】プレスブレーキが折り目閉じ装置を水平方
向及び垂直方向に移動させるためこの折り目閉じ装置に
伝動結合される駆動手段を備えていると有利である。こ
の駆動手段は雄型と雌型との間の空間へ折り目閉じ装置
を挿入するのに使用されるので，位置精度に関してこの
駆動手段により満たすべき要求は，折り目閉じ装置及び
雌型ブロツク部材を同時に移動させるのに役立つ公知の
駆動手段におけるほど高くはない。本発明によるプレス
ブレーキの雌型は，折り目閉じ装置との共同作用のため
プレスブレーキに固定的に設けられ，この折り目閉じ装
置を外方揺動させる公知の手段はもはや必要でない。Advantageously, the press brake comprises drive means which are drivingly coupled to the fold closing device for moving the fold closing device in horizontal and vertical directions. Since this drive means is used to insert the fold closure device into the space between the male and female molds, the requirements to be met by this drive means for the position accuracy are that the fold closure device and the female block member are at the same time. Not as high as in known drive means that serve to move. The female mold of the press brake according to the invention is fixedly mounted on the press brake in cooperation with the fold closing device, and the known means for rocking the fold closing device outwards are no longer necessary.
【００１８】本発明の好ましい実施例では，駆動手段
は，折り目閉じ装置を垂直及び水平移動させるため，直
線駆動部材例えば液圧又は空気圧で操作される作動シリ
ンダ装置を含んでいる。それにより折り目閉じ装置を垂
直方向に移動させるため２つの作動シリンダ装置が設け
られて，プレスブレーキの全動作幅にわたつて延びかつ
水平移動可能な往復部材上に配置されるように，装置を
構成することができる。この場合折り目閉じ装置は，作
動シリンダ装置により操作される押し棒に結合されてい
る。更に折り目閉じ装置を水平方向に移動させるため，
少なくとも１つの固定作動シリンダ装置が設けられ，そ
のピストン棒が往復部材の中央に直接結合されている。In a preferred embodiment of the invention, the drive means comprises a linear drive member, such as a hydraulic or pneumatically actuated cylinder device, for moving the fold closure device vertically and horizontally. Two actuating cylinder devices are thereby provided for moving the fold closing device in the vertical direction, the device being arranged so as to be arranged on a reciprocating member which extends over the full working width of the press brake and which can be moved horizontally. can do. In this case, the fold closing device is connected to a push rod operated by an actuating cylinder device. Furthermore, in order to move the fold closing device horizontally,
At least one fixed working cylinder device is provided, the piston rod of which is directly connected to the center of the reciprocating member.
【００１９】折り目閉じ装置は，対応する直接駆動手段
の押し棒に弾性的に結合されているのがよい。この弾性
は，押え部材を，折り目閉じ装置の位置により規定され
る不動作位置から位置ぎめすべき金属板片へ押付けるの
を可能にする。この目的のために好ましい構成では，互
いに間隔をおいて平行に延びる２つの支持腕をそれぞれ
含む２つの支持枠に，折り目閉じ装置が懸架されてい
る。支持腕の端部はばね手段により互いに結合され，一
方のばね手段は水平方向に作用し，他方のばね手段は垂
直方向に作用する。一方の支持腕は往復部材上に設けら
れる作動シリンダ装置の押し棒に結合され，他方の支持
腕は折り目閉じ装置の支持棒に結合されている。The fold closing device may be elastically connected to the push rod of the corresponding direct drive means. This elasticity makes it possible to press the holding member from the inoperative position defined by the position of the fold closing device onto the metal plate piece to be positioned. In a preferred configuration for this purpose, the fold-closing device is suspended on two support frames, each of which comprises two support arms that extend parallel to one another at a distance. The ends of the support arms are connected to each other by spring means, one spring means acting horizontally and the other spring means acting vertically. One support arm is connected to the push rod of the actuating cylinder device provided on the reciprocating member, and the other support arm is connected to the support rod of the fold closing device.
【００２０】大きい長さ例えば数ｍの長さの異形断面金
属板片を製造せねばならない場合，曲げ部及び雌型がそ
れぞれプレスブレーキの全動作幅に沿つて延びる単一の
部材から成つていると，金属板片が全長にわたつて均一
な押圧力を受けないおそれがある。このような場合，雄
型及び雌型を公知のように長さ方向にそれぞれ区分する
ことが考えられる。例えば雄型支持部材及び曲げ装置の
雄型及び折り目閉じ装置のラム部材は，互いに無関係に
操作可能な個別部分に区分することができる。更に雄型
ホルダの個別部分が，液圧クツシヨン装置によりプレス
ブレーキのラムに結合されていると有利である。その結
果曲げ装置は金属板片の全長に沿つて同じ曲げ角を生
じ，折り目閉じ装置は残留間隙なしに完全に閉じられ
る。If it is necessary to produce strips of deformed cross-section with a large length, for example of a few meters, the bend and the female mold each consist of a single member extending along the entire working width of the press brake. Therefore, the metal plate piece may not receive uniform pressing force over the entire length. In such a case, it is conceivable to separate the male type and the female type in the longitudinal direction as is known. For example, the male support member and the male member of the bending device and the ram member of the fold closing device can be separated into separate parts that can be operated independently of each other. Furthermore, it is advantageous if the individual parts of the male holder are connected to the ram of the press brake by means of a hydraulic cushioning device. As a result, the bending device produces the same bending angle along the entire length of the sheet metal piece, and the fold closing device is completely closed with no residual gap.
【００２１】最後に曲げ装置は，前述した鋭角曲げ部を
含む個別曲げ部を形成する際プレスブレーキの操作を容
易にするため，公知のように調節可能な底を持つ雌型を
含んでいる。Finally, the bending apparatus includes a female mold with an adjustable bottom, as is known, in order to facilitate the operation of the press brake when forming the individual bends, including the acute bends described above.
【００２２】[0022]
【実施例】添付図面を参照して，本発明による方法及び
プレスブレーキの実施例を以下に説明する。Embodiments of the method and the press brake according to the present invention will be described below with reference to the accompanying drawings.
【００２３】図１には，例えば扉枠用に使用される金属
板枠が断面図で示されている。２つの側方金属板部分２
及び３を互いに結合して扉開口を区側する中央金属板部
分１は，密封条片５を受入れる折曲げ溝４を持つてい
る。折曲げ溝４の内側溝壁６に対向する外側溝壁７は，
平らに押圧される鋭角曲げ部８を含む金属板部分により
構成されている。FIG. 1 is a sectional view of a metal plate frame used for a door frame, for example. Two side metal plate parts 2
The central metal plate part 1 which joins 3 and 3 together to define the door opening has a fold groove 4 for receiving a sealing strip 5. The outer groove wall 7 facing the inner groove wall 6 of the bent groove 4 is
It is composed of a metal plate portion including an acute-angled bent portion 8 that is pressed flat.
【００２４】図２〜４には，折曲げ溝４を形成するため
中央金属板部分１を曲げる段階が示され，個々の曲げ段
階の始めにおける金属板部分の形状が鎖線で示されてい
る。これらの曲げ段階を実施するため，特に側方部分２
及び３を形成する曲げ段階を実施するため，３点曲げの
原理に従つて動作する曲げ装置が使用され，この曲げ装
置は，雌型１０の深さを変化するため調節可能な底１１
を持つ雌型１０と，雄型ホルダ１２に固定されて雌型１
０へ進入可能な雄型１３とを含んでいる。このような曲
げ装置の構成及び動作は，例えば米国特許第４，９６
２，６５４明細書に示されている。2 to 4 show the steps of bending the central metal plate part 1 to form the fold grooves 4, and the shape of the metal plate part at the beginning of each bending step is shown in dashed lines. In order to carry out these bending steps, especially the lateral parts 2
In order to carry out the bending steps forming 3 and 3, a bending device, which operates according to the principle of three-point bending, is used, which bending device has an adjustable bottom 11 for changing the depth of the female mold 10.
Fixed to a male mold 12 and a female mold 10 having a female mold 1
And a male mold 13 that can enter 0. The construction and operation of such a bending device is described, for example, in US Pat.
2,654.
【００２５】図２による第１段階において，図２に成形
部品１ａとして示す最初は平らな金属板部分１が，図１
の位置Ａで９０゜より少し大きい角に曲げられる。それ
から図３に従つて，生ずる成形部品１ｂが図１の位置Ｂ
で鋭角曲げ部８となるように曲げられる結果，成形部品
１ｃが得られる。この成形部品１ｃが，最終曲げ動作に
おいて，図４に示すように図１の位置Ｃに直角曲げ部を
形成される。In the first stage according to FIG. 2, the initially flat metal plate part 1 shown in FIG.
At position A, the angle is slightly larger than 90 °. Then, according to FIG. 3, the resulting molded part 1b is located at position B in FIG.
As a result, the molded part 1c is obtained as a result of being bent to form the acute-angled bent portion 8. In the final bending operation of this molded part 1c, a right-angled bent portion is formed at the position C in FIG. 1 as shown in FIG.
【００２６】折り目閉じ装置２０は，図５によれば，角
形支持部材２２の一方の脚辺を構成する支持棒２１を含
み，この支持部材２２に垂直移動可能に取付けられるラ
ム部材２３は，図１７に詳細に示すように，雄型ホルダ
１２と共同作用する。角形支持部材２２の他の脚辺は，
ラム部材２３の下にある折畳み突起２５を備えた押え部
材２４により構成されている。押え部材２４は，動力を
伝達するばね手段によりラム部材２３に結合されてい
る。この実施例では，ばね手段は複数の弾性ばね体部材
２７から成るばね装置２６を含み，このばね装置２６
は，ラム部材２３の垂直に延びる盲穴２８に収容されて
いる。弾性ばね体部材２７の代りに，他のばね部材例え
ばコイルばねを使用できることは明らかである。弾性ば
ね部材２７は，ラム部材２３の底部分２９と，ラム部材
２３の盲穴２８内に摺動可能に支持されて押え部材２０
に作用する押圧部材３０との間に挟まれている。ばね装
置２６の予荷重は，押圧部材３０に固定されるボルト３
１とこのボルト３１上にねじはめられるナツト３２とに
よつて，所望の値に調節可能である。According to FIG. 5, the fold closing device 20 includes a support rod 21 which constitutes one leg of a rectangular support member 22, and a ram member 23 vertically movably attached to the support member 22 is shown in FIG. Cooperates with the male holder 12, as shown in detail at 17. The other leg of the rectangular support member 22 is
It is constituted by a holding member 24 having a folding projection 25 under the ram member 23. The pressing member 24 is connected to the ram member 23 by spring means for transmitting power. In this embodiment, the spring means comprises a spring device 26 consisting of a plurality of elastic spring body members 27.
Are housed in a vertically extending blind hole 28 in the ram member 23. Obviously, instead of the elastic spring body member 27, another spring member, for example a coil spring, can be used. The elastic spring member 27 is slidably supported in the bottom portion 29 of the ram member 23 and the blind hole 28 of the ram member 23 and is held by the pressing member 20.
It is sandwiched between the pressing member 30 and the pressing member 30. The spring device 26 is preloaded by the bolt 3 fixed to the pressing member 30.
It can be adjusted to the desired value by means of 1 and a nut 32 screwed onto this bolt 31.
【００２７】折り目閉じ装置２０の作用場所には，ラム
部材２３と折畳み突起２５との間の間隙３３が設けられ
ている。図５に示す折り目閉じ装置２０の不動作位置に
おいて，間隙３３の幅は，予備曲げされてこの間隙３３
へ挿入される金属板部分１の鋭角曲げ部８の寸法に合わ
せるため，ナツト３２により調節可能である。折り目閉
じ装置２０が操作されると，間隙３３の幅が金属板部分
１の厚さの２倍に相当する値に減少される。他方折畳み
突起２５の高さは，形成すべき折曲げ溝４（図１）の幅
に等しい高さを持つている。更に折畳み突起２５は，鋭
角曲げ部８が完全に平らに押圧されるのを防止する凹所
３４を備えている。それにより折曲げ溝４はその開口の
方へ幅を減少している。この手段により，折曲げ溝３に
収容される密封条片５が確実に拘束される。A gap 33 between the ram member 23 and the folding projection 25 is provided at the place of operation of the fold closing device 20. In the inoperative position of the fold closing device 20 shown in FIG. 5, the width of the gap 33 is pre-bent and
It can be adjusted by nut 32 in order to match the dimensions of the acute-angled bend 8 of the metal plate part 1 to be inserted into. When the fold closing device 20 is operated, the width of the gap 33 is reduced to a value corresponding to twice the thickness of the metal plate part 1. On the other hand, the height of the folding protrusion 25 has a height equal to the width of the bending groove 4 (FIG. 1) to be formed. In addition, the folding projection 25 comprises a recess 34 which prevents the sharp bend 8 from being pressed completely flat. Thereby, the fold groove 4 has a reduced width towards its opening. By this means, the sealing strip 5 housed in the bent groove 3 is securely restrained.
【００２８】鋭角に曲げられた金属板部分１を平らに押
圧する折り目閉じ装置２０の動作を，連続する動作段階
が示されている図６〜１０について説明する。まず折り
目閉じ装置２０が，後述する移動手段により，曲げ装置
１０，１３の動作区域外にある不動作位置から，図６に
よる動作位置へもたらされ，この動作位置でラム部材２
３は推型１３のすぐ近くにあり，しかも押圧操作中に基
礎部材として役立つ雌型１０の上にあつて，雄型ホルダ
と直接係合可能である。The operation of the fold closing device 20 for flatly pressing the sharply bent metal plate part 1 will now be described with reference to FIGS. 6 to 10 in which successive operating steps are shown. First, the crease closing device 20 is brought into the operating position according to FIG. 6 from the inoperative position outside the operating area of the bending device 10, 13 by means of the moving means described below, in which operating position the ram member 2
3 is in the immediate vicinity of the thrust die 13 and is on the female die 10 which serves as a base member during the pressing operation and can be directly engaged with the male die holder.
【００２９】予備曲げされた金属板部分１即ち成形部品
１ｄが，適当な向きで折り目閉じ装置２０の方へ移動さ
れ，鋭角曲げ部８が図７に示すように間隙３３へ入れら
れると，折り目閉じ装置２０が金属板部分１と共に雌型
１０へ向かつて下降される。今や金属板部分１は，図８
に示すように折り目閉じ装置２０の自重により，押え部
材２０と雌型１０との間に挟まれる。When the pre-bent metal plate part 1 or molded part 1d is moved in the proper direction towards the fold closing device 20 and the sharp bend 8 is inserted into the gap 33 as shown in FIG. The closing device 20 is lowered together with the metal plate part 1 towards the female mold 10. The metal plate part 1 is now shown in FIG.
As shown in FIG. 7, the fold closing device 20 is sandwiched between the pressing member 20 and the female mold 10 by its own weight.
【００３０】それから雄型ホルダを下降させることによ
り，ばね装置２６の予荷重の作用で押え部材２０が金属
板部分１の個所４０へ押圧され，この個所４０が雌型１
０へ押圧されて，次の押圧動作のため金属板部分１が動
かないように固定される。この状態が図９に示されてい
る。雄型ホルダを更に下降させることにより，鋭角曲げ
部８を平らにする押圧が開始される。雄型ホルダにより
及ぼされる押圧力の増大により，図１０に示すように，
鋭角曲げ部８はラム部材２３と折畳み突起２５との間で
平らに押圧される。上述した押圧動作のすべての段階に
おいて，雄型１３は関与しない。この雄型１３は押圧動
作を妨げないので，雄型ホルダに固定したままにするこ
とができる。Then, by lowering the male holder, the pressing member 20 is pressed against the portion 40 of the metal plate portion 1 by the action of the preload of the spring device 26, and this portion 40 is inserted into the female die 1.
It is pressed to 0 and the metal plate part 1 is fixed so as not to move for the next pressing operation. This state is shown in FIG. By further lowering the male holder, the pressing for flattening the acute-angled bent portion 8 is started. Due to the increased pressing force exerted by the male holder, as shown in FIG.
The acute-angled bent portion 8 is pressed flat between the ram member 23 and the folding protrusion 25. The male mold 13 is not involved in all stages of the pressing operation described above. Since this male die 13 does not interfere with the pressing operation, it can be fixed to the male die holder.
【００３１】図１１〜１３には，２つの側方支持部材５
０及び５１を含むプレスブレーキの部分が示されてい
る。固定加工台が符号５２で示され，プレスブレーキの
垂直に移動可能なラムは符号５３で示されている。加工
台５２は雌型１０を取付けられる雌型ホルダ５４を持
ち，この雌型ホルダ５４は雌型１０の底１１（図２）を
調節する手段を含んでいる。このような調節手段は図面
には示してないが，公知であり，ここでは説明しない。
ラム５３には，図１９について説明する液圧クツシヨン
装置５５が結合されている。雄型１３を支持する雄型ホ
ルダは液圧クツシヨン装置５５に取付けられている。な
お図をわかり易くするため，上述した付属装置は図１２
及び１３には示してない。この例では，雄型ホルダ，雄
型１３，雌型１０及び折り目閉じ装置２０はプレスブレ
ーキの全有効幅にわたつて延びており，それによりこれ
らの素子は，図１６〜１９に関して後述するように，個
々の縦部分に区分されている。上述した雄型１３と同様
に区分されている雌型１０は，わかり易くするため一体
に示されている。11 to 13 show two lateral support members 5
The portion of the press brake including 0 and 51 is shown. The fixed worktable is shown at 52 and the vertically movable ram of the press brake is shown at 53. The working table 52 has a female die holder 54 to which the female die 10 is mounted, and the female die holder 54 includes means for adjusting the bottom 11 (FIG. 2) of the female die 10. Such adjusting means are not shown in the drawings, but are known and will not be described here.
The ram 53 is connected to a hydraulic cushioning device 55 described with reference to FIG. The male holder that supports the male die 13 is attached to the hydraulic cushion device 55. Note that the above-described accessory device is shown in FIG.
And 13 are not shown. In this example, the male holder, the male mold 13, the female mold 10 and the fold closure device 20 extend across the full effective width of the press brake, so that these elements are as described below with respect to FIGS. , It is divided into individual vertical parts. The female mold 10, which is divided similarly to the male mold 13 described above, is shown integrally for the sake of clarity.
【００３２】プレスブレーキの枠は，折り目閉じ装置２
０を水平方向及び垂直方向に移動させる移動手段を備え
ている。移動手段は，側方に設けられかつ同期して動作
せしめられる２つの駆動装置５８及び５９を含み，これ
らの駆動装置はそれぞれ２つの空気圧又は液圧作動シリ
ンダ装置６０及び６１を含んでいる。一方の作動シリン
ダ装置６０は折り目閉じ装置２０の垂直移動に役立ち，
他方の作動シリンダ装置６１は折り目閉じ装置２０の水
平移動に役立つ。作動シリンダ装置６０は，プレスブレ
ーキの幅全体にわたつて延びる往復部材６２上に直立し
て取付けられている。この往復部材６２は箱状断面管に
より構成される横材６３を含み，この横材の両端に設け
られるＬ形支持部材６４は滑り部材６５を備えている。
作動シリンダ装置６０は基板部材６６により横材６３に
それぞれ結合されている。側方支持部材５０及び５１に
結合される支持梁６７は滑りレール６８を備えている。
往復部材６２の滑り部材６５は滑りレール６８に沿つて
水平に移動可能である。作動シリンダ装置６０のピスト
ン棒６９は押し棒７１に結合される橋部材７０へ当り，
この押し棒７１は横材６３及び基板部材６６に長さ方向
移動可能に支持されている。支持枠７２は押し棒７１の
下端に固定され，折り目閉じ装置２０がこの支持枠７２
に弾性的に結合されている。支持枠７２の詳細は図１４
及び１５から明らかである。The frame of the press brake has a fold closing device 2
A moving means for moving 0 in the horizontal and vertical directions is provided. The moving means comprises two side-mounted and synchronously actuated drives 58 and 59, which respectively include two pneumatic or hydraulic actuated cylinder devices 60 and 61, respectively. One of the working cylinder devices 60 serves for the vertical movement of the fold closing device 20,
The other actuating cylinder device 61 serves for horizontal movement of the fold closing device 20. The working cylinder device 60 is mounted upright on a reciprocating member 62 which extends over the entire width of the press brake. The reciprocating member 62 includes a horizontal member 63 formed by a box-shaped cross-section tube, and L-shaped support members 64 provided at both ends of the horizontal member include sliding members 65.
The working cylinder devices 60 are respectively connected to the cross members 63 by the base member 66. The support beam 67 connected to the lateral support members 50 and 51 comprises a slide rail 68.
The slide member 65 of the reciprocating member 62 is horizontally movable along the slide rail 68. The piston rod 69 of the working cylinder device 60 hits the bridge member 70 connected to the push rod 71,
The push rod 71 is supported by the horizontal member 63 and the substrate member 66 so as to be movable in the length direction. The support frame 72 is fixed to the lower end of the push rod 71, and the fold-closing device 20 allows the support frame 72 to
Is elastically coupled to. The details of the support frame 72 are shown in FIG.
And 15 are clear.
【００３３】往復部材６２を水平移動させる作動シリン
ダ装置６１は，図１１及び１３に示すように，ソケツト
部材７３により，箱状断面管から成る横材７４に結合さ
れている。この横材７４はプレスブレーキの側方支持部
材５０及び５１に固定されている。作動シリンダ装置６
１のピストン棒７５は往復部材６２に直接結合されてい
る。場合によつては，往復部材６２にその長さの中央で
係合するただ１つの作動シリンダ装置６１を設けても充
分である。As shown in FIGS. 11 and 13, the working cylinder device 61 for horizontally moving the reciprocating member 62 is connected by a socket member 73 to a cross member 74 having a box-shaped cross section tube. The cross member 74 is fixed to the side support members 50 and 51 of the press brake. Working cylinder device 6
The one piston rod 75 is directly connected to the reciprocating member 62. In some cases, it is sufficient to provide the reciprocating member 62 with only one actuating cylinder device 61 which engages at the center of its length.
【００３４】折り目閉じ装置２０を動作位置に位置ぎめ
するため，調節可能なストツパ部材を設けることができ
る。この実施例では，水平移動経路に沿う位置ぎめは，
作動シリンダ装置６１のピストン棒７５の最終位置によ
つて行われる。垂直に延びる移動経路に沿う折り目閉じ
装置２０の位置ぎめのために，共同作用する２つのスト
ツパ部材，即ち橋部材７０に取付けられるストツパ部材
８４と，基板部材６６上に直立して取付けられる作動シ
リンダ装置８６のピストン棒８５とが設けられているAn adjustable stop member may be provided to position the fold closure device 20 in the operative position. In this embodiment, the positioning along the horizontal movement path is
This is done by the final position of the piston rod 75 of the working cylinder device 61. Two cooperating stopper members, a stopper member 84 mounted on the bridge member 70 and an actuating cylinder mounted upright on the base member 66, for positioning the fold closing device 20 along a vertically extending path of travel. A piston rod 85 of the device 86 is provided
【００３５】図１４及び１５は支持枠７２の１つを示
し，この支持粋７２は，折り目閉じ装置２０を，作動シ
リンダ装置６０により操作される垂直移動可能な押し棒
７１に弾性的に結合する（図１１〜１３）。各支持枠７
２は，上下に間隔をおいて互いに平行に延びる２つの支
持腕９０及び９１を含んでいる。上部支持腕９０は押し
棒７１の端面にねじ９２で固定され，折り目閉じ装置２
０（図５）の支持棒２１は下部支持腕９１にねじ９３で
固定されている。支持腕９０，９１の両端はばね手段９
４及び９５により互いに結合され，そのうち一方のばね
手段９４は水平方向に作用し，他方のばね手段９５は垂
直方向に作用する。FIGS. 14 and 15 show one of the support frames 72 which elastically connect the fold closing device 20 to a vertically movable push rod 71 operated by an actuating cylinder device 60. (FIGS. 11-13). Each support frame 7
The reference numeral 2 includes two support arms 90 and 91 which extend vertically and are parallel to each other. The upper support arm 90 is fixed to the end surface of the push rod 71 with a screw 92, and the fold closing device 2
The support rod 21 of 0 (FIG. 5) is fixed to the lower support arm 91 with a screw 93. Both ends of the support arms 90 and 91 are spring means 9
4 and 95 are connected to one another, of which one spring means 94 acts horizontally and the other spring means 95 acts vertically.
【００３６】ばね手段９４は，２つの側方ピストン９８
及び９９の間に挟まれる押圧ばね９７を収容するばね支
持体９６を含んでいる。これらのピストンへ及ぼされる
押圧力は，支持腕９０にそれぞれ結合される支持部材１
０２及び１０３へそれぞれねじ込まれる２つの調節ねじ
１００及び１０１により吸収される。ばね支持体９６は
２つの支柱１０４に載り，ねじ１０５により下部支持腕
９１へ支柱１０４と共に結合されている。上部支持腕９
０の端部１０６は他の部分より幅狭く，２つの支柱１０
４の間に延びている。更にばね支持体９６と支持腕９０
との間には，付加的な支持部材として役立つ球面ワツシ
ヤ１０７が設けられている。ばね手段９５の構造もばね
手段９４の構造に類似しており，そのばね支持体１１０
は上部支持腕９０の穴内に固定され，調節ねじ１１１及
び１１２は支持部材１１３及び下部支持腕９１にそれぞ
れはまつている。The spring means 94 comprises two lateral pistons 98
And 99 for containing a spring support 96 that houses a biasing spring 97. The pressing force exerted on these pistons is applied to the support member 1 connected to the support arm 90, respectively.
It is absorbed by two adjusting screws 100 and 101 which are screwed into 02 and 103 respectively. The spring support 96 rests on two stanchions 104 and is connected with the stanchions 104 to the lower support arm 91 by screws 105. Upper support arm 9
The end 106 of 0 is narrower than the other parts, and the two columns 10
It extends between four. Further, the spring support 96 and the support arm 90
Between them and a spherical washer 107 is provided which serves as an additional support member. The structure of the spring means 95 is also similar to that of the spring means 94, and its spring support 110
Is fixed in the hole of the upper support arm 90, and the adjusting screws 111 and 112 are respectively engaged with the support member 113 and the lower support arm 91.
【００３７】図１６〜１８は，図１１〜１３によるプレ
スブレーキに組込まれる折り目閉じ装置２０を示してい
る。16 to 18 show a fold closing device 20 incorporated in the press brake according to FIGS. 11 to 13.
【００３８】折り目閉じ装置２０の主要素子である異形
角形支持部材２２は，プレスブレーキの全動作幅にわた
つて延び，２つの支持枠７２の支持腕９１に結合されて
いる。しかしプレスブレーキの幅方向において支持部材
２２とほぼ同じ長さを持つラム部材２３は，互いに無関
係に動作する同じ長さの複数の部分１２０に区分されて
いる。ラム部材２３の各ラム部材部分１２０は，ばね装
置２６の作用を受ける２つの押圧部材３０を含んでい
る。各ラム部材部分１２０は垂直移動可能に角形支持部
材２２の支持棒２１に結合されている。この目的のため
ねじ１２１がラム部材部分１２０の中央に固定され，支
持棒２１に設けられて垂直に延びる長穴１２２を貫通し
ている。支持棒２１を固定するため，球面ワツシヤ１２
４を含むターンバツクル１２３が設けられている。The deformed rectangular support member 22, which is the main element of the fold closing device 20, extends over the entire working width of the press brake and is connected to the support arms 91 of the two support frames 72. However, the ram member 23 having substantially the same length as the support member 22 in the width direction of the press brake is divided into a plurality of portions 120 of the same length that operate independently of each other. Each ram member portion 120 of the ram member 23 includes two biasing members 30 under the action of the spring device 26. Each ram member portion 120 is vertically movably connected to the support rod 21 of the rectangular support member 22. For this purpose, a screw 121 is fixed in the center of the ram member part 120 and passes through a vertically extending slot 122 in the support rod 21. The spherical washer 12 is used to fix the support rod 21.
A turn bag 123 including 4 is provided.
【００３９】ラム部材２３を個別ラム部材部分１２０に
区分する場合，ラム部材部分１２０が動作幅の範囲で同
じ長さを持つている必要はない。特に動作幅を延ばす場
合，即ち処理すべき金属板が非常に長い場合，プレスブ
レーキの中央にあるラム部材部分１２０は，両端にある
ラム部材部分１２０より長くてもよい。When the ram member 23 is divided into individual ram member portions 120, it is not necessary that the ram member portions 120 have the same length within the range of operating width. The ram member part 120 in the center of the press brake may be longer than the ram member parts 120 at both ends, especially if the working width is to be extended, ie if the metal plate to be treated is very long.
【００４０】雄型ホルダ１２及び雄型１３（図１１）
は，ラム部材２３と同じように，互いに無関係に動作す
る同じ数の縦部分に区分されるのがよい。それにより雄
型ホルダ１２の個別縦部分は，米国特許第５，０９７，
６９４号明細書に示されているような液圧クツシヨン装
置によつて，プレスブレーキのラム５３に結合すること
ができる。Male holder 12 and male 13 (FIG. 11)
Like the ram member 23, it should be divided into the same number of longitudinal sections that operate independently of each other. Accordingly, the individual vertical portion of the male holder 12 has a structure similar to that of US Pat. No. 5,097,
It can be connected to the ram 53 of the press brake by means of a hydraulic cushioning device as shown in 694.
【００４１】前記米国特許明細書に示されている種類の
液圧クツシヨン装置が図１９に概略的に示されている。
符号５５で示す液圧クツシヨン装置は，ねじ１３２によ
り互いに結合される２つの縦部材１３０及び１３１から
構成されている。上部縦部材１３０は，縦方向に列をな
して配置される複数のねじ１３３によつて，プレスブレ
ーキのラム５３に結合されている。A hydraulic cushioning device of the type shown in the aforementioned US patent is shown schematically in FIG.
The hydraulic cushion device, designated by the numeral 55, comprises two longitudinal members 130 and 131 which are connected to each other by screws 132. The upper vertical member 130 is connected to the ram 53 of the press brake by a plurality of screws 133 arranged in rows in the vertical direction.
【００４２】液圧クツシヨン装置５５の上部縦部材１３
０は，この液圧クツシヨン装置５５の２つの縦部材１３
０及び１３１の間に縁を締付けられる膜１３６により覆
われる中空室又は空所１３５を備えている。この空所１
３５は液圧クツシヨンを構成する圧力液体１３７を収容
し，かつ管路１３８を経て圧力源に，また圧力液体用戻
り管路（図示せず）に接続されている。このような構成
は公知であり，これ以上の説明を省く。Upper vertical member 13 of hydraulic cushion device 55
0 is the two vertical members 13 of the hydraulic cushion device 55.
Between 0 and 131 there is a cavity or cavity 135 covered by a membrane 136 which is clamped at the edges. This void 1
Reference numeral 35 contains a pressure liquid 137 which constitutes a hydraulic cushion, and is connected to a pressure source via a line 138 and to a pressure liquid return line (not shown). Such a configuration is known and will not be described further.
【００４３】液圧クツシヨン装置５５の下部縦部材１３
１はその底面に縦溝１４０を持ち，この縦溝１４０へ挿
入される雄型ホルダ１２は，既に述べたように個別縦部
分１４１から成り，それにより雄型１３の対応する縦部
分１４２が各雄型ホルダ部分１４１に結合されている。
各雄型ホルダ部分１４１に少なくとも２つのピストン板
１４３が付属して，液圧クツシヨンを区画する膜１３６
と共同作用する。長さ方向に案内されるこれらのピスト
ン板１４３のピストン棒１４４は，対応する雄型ホルダ
部分１４１の上面に載つている。Lower vertical member 13 of hydraulic cushion device 55
1 has a vertical groove 140 on its bottom surface, and the male holder 12 inserted into this vertical groove 140 consists of individual vertical portions 141, as already mentioned, whereby the corresponding vertical portions 142 of the male mold 13 are each It is coupled to the male holder portion 141.
At least two piston plates 143 are attached to each male holder part 141 to define a membrane 136 for partitioning the hydraulic cushion.
Synergize with. The piston rods 144 of these piston plates 143, which are guided lengthwise, rest on the upper surface of the corresponding male holder part 141.
【００４４】雄型ホルダ部分１４１は，水平移動可能な
係合部材１４５により液圧クツシヨン装置５５内に保持
され，即ち雄型ホルダ部分１４１の脱落が防止される。
各雄型ホルダ部分１４１に対して２つの係合部材１４５
を設けるのがよい。各係合部材１４５は，雄型ホルダ部
分１４１の互いに反対の側にある２つの係合溝１４７の
１つに係合する斜面係合部分１４６を含み，この係合部
分１４６はばね１４８により係合位置に保持される。ば
ね１４８の後側は，液圧クツシヨン装置５５の下部縦部
材１３１に結合される板部材１４９に支持されている。
更に係合部材１４５にあるフランジ１５０を介して，手
によるか又は機械的に操作される補助手段により，ばね
１４８の力に抗して係合部材１４５を引戻すことができ
る。こうして雄型ホルダ部分１４１を液圧クツシヨン装
置５５から取除くために，係合部材１４５が係合溝１４
７から外される。The male holder portion 141 is held in the hydraulic cushioning device 55 by the horizontally movable engaging member 145, that is, the male holder portion 141 is prevented from falling off.
Two engaging members 145 for each male holder portion 141
Should be provided. Each engagement member 145 includes a bevel engagement portion 146 that engages one of two engagement grooves 147 on opposite sides of the male holder portion 141, which engagement portion 146 is engaged by a spring 148. It is held at the combined position. The rear side of the spring 148 is supported by a plate member 149 coupled to the lower vertical member 131 of the hydraulic cushioning device 55.
Furthermore, via the flange 150 on the engagement member 145, the engagement member 145 can be pulled back against the force of the spring 148, either by hand or by mechanically operated auxiliary means. Thus, in order to remove the male holder portion 141 from the hydraulic cushioning device 55, the engaging member 145 is engaged with the engaging groove 14
Removed from 7.
【００４５】液圧クツシヨン装置５５へ挿入すべき雄型
ホルダ１２及び雄型１３の縦部分１４１及び１４２の
数，及びラム部材２３の縦部分１２０の数は，実際の曲
げ長さに関係している。The number of vertical portions 141 and 142 of the male holder 12 and the male die 13 and the number of vertical portions 120 of the ram member 23 to be inserted into the hydraulic cushioning device 55 are related to the actual bending length. There is.
【００４６】曲げ又は押圧動作中に外部から雄型ホルダ
部分１４１へ及ぼされる変形力が，液圧クツシヨンを構
成する圧力液体１３７の押圧力より大きくなると，この
雄型ホルダ部分１４１が液圧クツシヨン装置５５内へ移
動され，それにより係合部材１４５が後退し，ピストン
棒１４４を介して雄型ホルダ部分１４１により駆動され
て板部材１４３が，膜１３６を介して，圧力液体１３７
を収容する空所１３５へ進入する。板部材１４３の進入
深さは，金属板の全長にわたる均一な加工を保証するた
め，適当な電気−機械制御手段により調節することがで
きる。加工動作の終りにラム５３が引戻され，空所１３
７へ進入した工具部分も同時に初期位置へ戻される。When the deformation force exerted on the male holder portion 141 from the outside during the bending or pressing operation becomes larger than the pressing force of the pressure liquid 137 constituting the hydraulic cushion, the male holder portion 141 is forced to move by the hydraulic cushion device. 55, which causes the engaging member 145 to retract and is driven by the male holder portion 141 via the piston rod 144 to move the plate member 143 through the membrane 136 and through the pressure liquid 137.
Enter the vacant space 135 that accommodates. The depth of penetration of the plate member 143 can be adjusted by suitable electro-mechanical control means to ensure uniform processing over the entire length of the metal plate. At the end of the machining operation, the ram 53 is pulled back and the vacant space 13
The tool portion that has entered 7 is also returned to the initial position at the same time.
【図１】密封条片を受入れる折曲げ溝を含む扉枠の金属
板ライニングの断面図である。1 is a cross-sectional view of a metal plate lining of a door frame including a folding groove that receives a sealing strip.
【図２】図２は折曲げ溝を形成するため金属板を曲げる
第１段階における曲げ工具の垂直断面図である。FIG. 2 is a vertical sectional view of a bending tool in a first step of bending a metal plate to form a bending groove.
【図３】金属板を曲げる第２段階における曲げ工具の垂
直断面図である。FIG. 3 is a vertical sectional view of a bending tool in a second stage of bending a metal plate.
【図４】金属板を曲げる第３段階における曲げ工具の垂
直断面図である。FIG. 4 is a vertical sectional view of a bending tool in a third stage of bending a metal plate.
【図５】鋭角曲げ部を平らに押圧する折り目閉じ装置の
垂直断面図である。FIG. 5 is a vertical cross-sectional view of a fold closing device that flatly presses an acute-angled bent portion.
【図６】鋭角曲げ部を平らに押圧する第１段階における
折り目閉じ装置の垂直断面図である。FIG. 6 is a vertical cross-sectional view of the fold closing device in the first stage of pressing the acute-angled bent portion flat.
【図７】鋭角曲げ部を平らに押圧する第２段階における
折り目閉じ装置の垂直断面図である。FIG. 7 is a vertical cross-sectional view of the fold closing device in the second step of pressing the acute-angled bent portion evenly.
【図８】鋭角曲げ部を平らに押圧する第３段階における
折り目閉じ装置の垂直断面図である。FIG. 8 is a vertical cross-sectional view of the fold closing device in the third step of pressing the acute-angled bent portion flat.
【図９】鋭角曲げ部を平らに押圧する第４段階における
折り目閉じ装置の垂直断面図である。FIG. 9 is a vertical cross-sectional view of the fold closing device in the fourth step of pressing the acute-angled bent portion flat.
【図１０】鋭角曲げ部を平らに押圧する第５段階におけ
る折り目閉じ装置の垂直断面図である。FIG. 10 is a vertical cross-sectional view of the fold closing device in the fifth step of flatly pressing the acute-angled bent portion.
【図１１】折り目閉じ装置用駆動手段を持つプレスブレ
ーキの概略垂直断面図である。FIG. 11 is a schematic vertical sectional view of a press brake having a driving means for a fold line closing device.
【図１２】プレスブレーキの駆動手段の一部切欠き正面
図である。FIG. 12 is a partially cutaway front view of the drive means of the press brake.
【図１３】プレスブレーキの駆動手段の一部切欠き平面
図である。FIG. 13 is a partially cutaway plan view of the drive means of the press brake.
【図１４】図１３のＡ−Ａ線に沿う折り目閉じ装置用支
持枠の拡大断面図である。14 is an enlarged cross-sectional view of the fold closing device support frame taken along the line AA in FIG.
【図１５】図１４のＢ−Ｂ線に沿う断面図である。15 is a cross-sectional view taken along the line BB of FIG.
【図１６】図１１〜１３による折り目閉じ装置の拡大正
面図である。FIG. 16 is an enlarged front view of the fold closing device according to FIGS.
【図１７】図１６のＣ−Ｃ線に沿う断面図である。17 is a sectional view taken along the line CC of FIG.
【図１８】図１６のＤ−Ｄ線に沿う断面図である。18 is a sectional view taken along the line DD of FIG.
【図１９】雄型ホルダを支持する液圧クツシヨン装置の
垂直断面図である。FIG. 19 is a vertical sectional view of a hydraulic cushioning device supporting a male holder.
１ 金属板 ４ 折曲げ溝 ８ 鋭角曲げ部 １０ 雌型 １１ 底 １２ 雄型ホルダ １３ 雄型 ２０ 折り目閉じ装置 ２４ 押え部材 DESCRIPTION OF SYMBOLS 1 Metal plate 4 Bending groove 8 Acute angle bending part 10 Female type 11 Bottom 12 Male type holder 13 Male type 20 Fold closing device 24 Holding member
Claims (15)
に結合される雄型とを含む曲げ装置により金属板を曲げ
る方法において，金属板片を前記雄型と前記雌型との間
へ挿入し，前記雄型を前記雌型の方へ操作して，特定の
要求に従つて少なくとも１つの鋭角曲げ部を含む複数の
曲げ部を前記金属板片に形成し，予備曲げされた前記金
属板片を前記雄型と前記雌型との間の空間から除去し，
押え部材を持つ可動折り目閉じ装置を前記雄型と前記雌
型との間の空間へ一時的に挿入し，前記鋭角曲げ部を持
つ金属板片の部分を前記折り目閉じ装置へ挿入し，前記
雄型を前記折り目閉じ装置の方へ操作して，前記金属板
片にある前記鋭角曲げ部を平らに押圧することを特徴と
する，金属板を曲げる方法。1. A method of bending a metal plate by a bending device including a female die and a male die which is capable of entering the female die and coupled to a male die holder, wherein a metal plate piece is provided between the male die and the female die. Inserted between and manipulating the male mold towards the female mold to form a plurality of bends in the metal plate piece, including at least one acute angle bend, according to specific requirements, and pre-bent Removing the metal plate piece from the space between the male mold and the female mold,
The movable fold closing device having a holding member is temporarily inserted into the space between the male mold and the female mold, and the portion of the metal plate piece having the acute-angled bent portion is inserted into the fold closing device. A method for bending a metal plate, comprising operating a mold toward the crease closing device to flatly press the acute-angled bent portion of the metal plate piece.
べての前記曲げ部を，３点曲げの原理に従つて動作しか
つ調節可能な底を持つ雌型を備えた曲げ装置により形成
することを特徴とする，請求項１に記載の方法。2. All said bending parts, including said acute-angled bending parts, of said metal plate piece are formed by a bending device which operates according to the principle of three-point bending and which has a female die with an adjustable bottom. The method according to claim 1, characterized in that
ダに結合される雄型と，前記金属板片にある鋭角曲げ部
を平らに押圧する折り目閉じ装置とを有するものにおい
て，前記折り目閉じ装置か押え部材を含み，かつプレス
ブレーキの側方支持部材に可動に支持され，曲げ動作中
に曲げ装置の動作区域外にある不動作位置から動作位置
へ前記折り目閉じ装置が移動可能であり，この動作位置
で前記折り目閉じ装置が，折り目閉じ過程中に基礎部材
として役立つ曲げ装置の前記雌型の上に位置せしめら
れ，それにより前記折り目閉じ装置が雄型ホルダの作用
を直接受けることを特徴とする，金属板を曲げるための
プレスブレーキ。3. A mold having a female mold, a male mold that can be inserted into the female mold and is coupled to a male mold holder, and a fold closing device that flatly presses an acute-angled bent portion of the metal plate piece, The fold closing device is movable from an inoperative position outside a working area of the bending device to an operating position during bending operation, including the fold closing device or a pressing member and movably supported by a lateral support member of the press brake. And in this operating position the fold closing device is positioned above the female mold of the bending device which serves as a base member during the fold closing process, whereby the fold closing device is directly affected by the male holder. A press brake for bending a metal plate, which is characterized in that
と共同作用するラム部材と，このラム部材の下にある折
畳み突起とを含み，この折畳み突起の高さが形成すべき
折曲げ溝の幅に一致し，前記折畳み突起が前記押え部材
に一体に形成され，この押え部材が動力伝達ばね手段に
より前記ラム部材に結合されていることを特徴とする，
請求項３に記載のプレスブレーキ。4. The fold closure device includes a ram member cooperating with the male holder and a fold protrusion beneath the ram member, the height of the fold protrusion of the fold groove to be formed. The width of the folding protrusion is integrally formed with the pressing member, and the pressing member is connected to the ram member by a power transmission spring means.
The press brake according to claim 3.
定的に結合される支持棒を含み，前記ラム部材が垂直移
動可能に前記支持棒に支持されていることを特徴とす
る，請求項４に記載のプレスブレーキ。5. The fold closing device includes a support rod fixedly coupled to the pressing member, and the ram member is vertically movably supported by the support rod. Press brake described in.
記部材とが，プレスブレーキの全動作幅にわたつて延び
る角形支持部材により構成されていることを特徴とす
る，請求項５に記載のプレスブレーキ。6. The press according to claim 5, wherein the pressing member and the member of the fold closing device are constituted by a rectangular support member extending over the entire operating width of the press brake. brake.
の折り目閉じ装置を水平方向及び垂直方向に移動させる
駆動手段が設けられていることを特徴とする，請求項３
に記載のプレスブレーキ。7. A drive means is provided, which is drivingly coupled to the fold closing device to move the fold closing device in a horizontal direction and a vertical direction.
Press brake described in.
直及び水平に移動させる直線駆動部材を含んでいること
を特徴とする，請求項７に記載のプレスブレーキ。8. The press brake according to claim 7, wherein the driving means includes a linear driving member that moves the fold closing device vertically and horizontally.
作される作動シリンダ装置を含んでいることを特徴とす
る，請求項８に記載のプレスブレーキ。9. The press brake according to claim 8, wherein the linear drive member includes an actuating cylinder device which is hydraulically or pneumatically operated.
させる２つの作動シリンダ装置が設けられ，これらの作
動シリンダ装置が，プレスブレーキの全動作幅にわたつ
て延びかつ水平方向に移動可動な往復部材上にあり，前
記折り目閉じ装置が前記作動シリンダ装置により操作さ
れる押し棒に結合され，前記折り目閉じ装置を水平方向
に移動させる少なくとも１つの固定作動シリンダ装置が
設けられ，この作動シリンダ装置のピストン棒が前記往
復部材に直接結合されていることを特徴とする，請求項
９に記載のプレスブレーキ。10. A reciprocating member which is provided with two working cylinder devices for moving the fold closing device in a vertical direction, the working cylinder devices extending over the entire working width of the press brake and movable in the horizontal direction. There is at least one fixed working cylinder device, which is above and in which the fold closing device is connected to a push rod operated by the working cylinder device, for moving the fold closing device in a horizontal direction, the piston of the working cylinder device being provided. The press brake according to claim 9, wherein a rod is directly connected to the reciprocating member.
性的に結合されていることを特徴とする，請求項１０に
記載のプレスブレーキ。11. The press brake according to claim 10, wherein the fold closing device is elastically coupled to the push rod.
おいて互いに平行に延びる２つの支持腕をそれぞれ含む
２つの支持枠に懸架され，前記支持腕の端部がばね手段
により互いに結合され，これらばね手段の一方が水平方
向に作用し，ばね手段の他方が垂直方向に作用し，それ
により前記支持腕の１つが，前記住復部材上に設けられ
る作動シリンダ装置の押し棒に結合され，他の支持腕が
前記折り目閉じ装置の支持棒に結合されていることを特
徴とする，請求項５又は１１に記載のプレスブレーキ。12. The fold closing device is suspended on two support frames, each of which includes two support arms extending in parallel at a specific distance from each other, and ends of the support arms are connected to each other by spring means. One of these spring means acts horizontally and the other of the spring means acts vertically, whereby one of said support arms is connected to a push rod of an actuating cylinder device provided on said restoring member. The press brake according to claim 5 or 11, characterized in that another support arm is connected to the support rod of the fold closing device.
雄型及び前記折り目閉じ装置のラム部材が，互いに独立
に操作可能な個別部分に分けられていることを特徴とす
る，請求項３に記載のプレスブレーキ。13. The male supporting member, the male mold of the bending device and the ram member of the fold closing device are divided into individual parts which can be operated independently of each other. The described press brake.
ツシヨン装置によりプレスブレーキのラムに結合されて
いることを特徴とする，請求項３に記載のプレスブレー
キ。14. Press brake according to claim 3, characterized in that the individual parts of the male holder are connected to the ram of the press brake by means of a hydraulic cushioning device.
型を含んでいることを特徴とする，請求項３に記載のプ
レスブレーキ。15. Press brake according to claim 3, characterized in that the bending device comprises a female mold with an adjustable bottom.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19934315706 DE4315706C2 (en) | 1993-05-13 | 1993-05-13 | Press brakes to form fold grooves on sheet metal profiles |
| DE4315706.8 | 1993-10-15 | ||
| DE4335174.3 | 1993-10-15 | ||
| DE19934335174 DE4335174A1 (en) | 1993-10-15 | 1993-10-15 | Process for bending metal sheets, and bending-off press for carrying out the process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06328134A true JPH06328134A (en) | 1994-11-29 |
Family
ID=25925822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13351994A Pending JPH06328134A (en) | 1993-05-13 | 1994-05-12 | Method and press brake for bending metal plate |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0624411A1 (en) |
| JP (1) | JPH06328134A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056887A (en) * | 2014-06-28 | 2014-09-24 | 永济新时速电机电器有限责任公司 | Auxiliary workbench device for molding sheet metal part |
| CN107008781A (en) * | 2017-05-22 | 2017-08-04 | 中国五冶集团有限公司 | A kind of grounding flat steel bending apparatus and bending method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4425992C2 (en) * | 1994-07-22 | 1996-11-28 | Roland Man Druckmasch | Machine cover for a printing press |
| AT505656B1 (en) | 2008-02-19 | 2009-03-15 | Trumpf Maschinen Austria Gmbh | FOLDING DEVICE FOR A BENDING PEG, IN PARTICULAR BUTTING PRESSURE |
| DE102012206657A1 (en) * | 2012-04-23 | 2013-03-21 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Method for introducing a deformation into a plate-like workpiece |
| CN106363048A (en) * | 2016-11-17 | 2017-02-01 | 江苏赛拉弗光伏***有限公司 | Solder strip pre-bending mechanism for solar cell panel |
| CN108115008A (en) * | 2016-11-28 | 2018-06-05 | 苏州慧博精密钣金有限公司 | Folding kills side technique |
| CN107931457B (en) * | 2017-11-24 | 2023-10-17 | 安徽鲲鹏装备模具制造有限公司 | Synchronous riveting equipment for side edges and end edges of refrigerator inner containers |
| CN108284164B (en) * | 2018-02-13 | 2023-10-17 | 安徽鲲鹏装备模具制造有限公司 | Roller type refrigerator liner double-short-side corner line step-by-step riveting mechanism |
| CN108838250A (en) * | 2018-08-13 | 2018-11-20 | 南京邮电大学 | A kind of bending and flanging integrated molding device suitable for flat sheet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3034559A (en) * | 1960-02-23 | 1962-05-15 | John W Mcdougall Company Inc | Dies for bending sheet metal |
| US4805438A (en) * | 1987-03-05 | 1989-02-21 | Metal Building Components Incorporated | Hemming die fixture for metal presses |
| AT392023B (en) * | 1988-11-21 | 1991-01-10 | Haemmerle Ag | METHOD FOR BENDING SHEET PIECES |
-
1994
- 1994-04-25 EP EP94810227A patent/EP0624411A1/en not_active Withdrawn
- 1994-05-12 JP JP13351994A patent/JPH06328134A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056887A (en) * | 2014-06-28 | 2014-09-24 | 永济新时速电机电器有限责任公司 | Auxiliary workbench device for molding sheet metal part |
| CN107008781A (en) * | 2017-05-22 | 2017-08-04 | 中国五冶集团有限公司 | A kind of grounding flat steel bending apparatus and bending method |
| CN107008781B (en) * | 2017-05-22 | 2018-07-03 | 中国五冶集团有限公司 | A kind of grounding flat steel bending apparatus and bending method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0624411A1 (en) | 1994-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH06328134A (en) | Method and press brake for bending metal plate | |
| JP2000051971A (en) | Hemming device, and hemming method | |
| RU2037353C1 (en) | Device for sheet presswork | |
| US4082026A (en) | Portable press | |
| EP0137486A2 (en) | Apparatus for bending metal plate in widthwise direction | |
| JPS58148029A (en) | Cam die | |
| JPH11267768A (en) | Press die | |
| JP3099035B2 (en) | Press forming machine | |
| JP3121691B2 (en) | Press mold | |
| US3832881A (en) | Workpiece translation mechanism | |
| JPH05123755A (en) | Method and device for u-shape bending | |
| RU1821264C (en) | Press tool for manufacture of products with bent-in edges | |
| JPH031084B2 (en) | ||
| JPS583769B2 (en) | Press product removal device | |
| CN219025599U (en) | Punching device for sheet metal machining | |
| CN211866268U (en) | Single-column hydraulic press for bending and forming door stop of subway door | |
| SU1442293A1 (en) | Die for bending unit blanks from a sheet | |
| SU733773A1 (en) | Press for straightening metallic constructions | |
| SU1189538A1 (en) | Die for bending piece billets | |
| JPS59147719A (en) | Method and apparatus for edge bending | |
| RU2036054C1 (en) | Apparatus for blanking angular parts | |
| JPS6032901Y2 (en) | bending device | |
| JPS60203327A (en) | Compound pressing die | |
| SU1660799A1 (en) | Apparatus for manufacturing continuous form pieces | |
| SU801940A1 (en) | Die for working piece billets |