JPH0615364A - Bending die device for sheet material - Google Patents
Bending die device for sheet materialInfo
- Publication number
- JPH0615364A JPH0615364A JP17252792A JP17252792A JPH0615364A JP H0615364 A JPH0615364 A JP H0615364A JP 17252792 A JP17252792 A JP 17252792A JP 17252792 A JP17252792 A JP 17252792A JP H0615364 A JPH0615364 A JP H0615364A
- Authority
- JP
- Japan
- Prior art keywords
- bending
- punch
- retainer
- counter
- plate
- 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.)
- Granted
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、板材曲げ型装置に関
し、特にＵ形曲げ、ハット曲げを行う板材曲げ型装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material bending die apparatus, and more particularly to a plate material bending die apparatus for performing U-shaped bending and hat bending.
【０００２】[0002]
【従来の技術】板材の両側に同方向のＬ形折曲片を有す
るＵ形曲げ、ハット曲げは、従来一般に、凸形状の金型
と凹形状の金型とを用いたプレス型曲げにより行われて
いる。2. Description of the Related Art U-shaped bending and hat-shaped bending having L-shaped bent pieces in the same direction on both sides of a plate material are generally performed by press-type bending using a convex mold and a concave mold. It is being appreciated.
【０００３】[0003]
【発明が解決しようとする課題】プレス型曲げによるＵ
形曲げ、ハット曲げに於いては、板材の板厚が厚いと、
大きい折曲加工力が必要とし、また板材の板厚が厚い
と、折曲部に曲げ丸みが生じ、直角の折曲部が得られな
い。U by pressing die bending
In shape bending and hat bending, if the plate thickness of the plate material is thick,
A large bending force is required, and when the plate material has a large thickness, the bent portion is bent and rounded, and a right-angled bent portion cannot be obtained.
【０００４】本発明は、上述の如き問題点に着目してな
されたものであり、特にプッシュ式のＬ形折曲の組み合
わせにより、板材の板厚が厚くともさほど大きい折曲加
工力を必要とすることなく、また直角の折曲部が得られ
るべくＵ形曲げ、ハット曲げを行う板材曲げ型装置を提
供することを目的としている。The present invention has been made by paying attention to the above-mentioned problems, and in particular, a combination of push-type L-shaped bending requires a large bending force even if the plate is thick. It is an object of the present invention to provide a plate material bending die device that performs a U-shaped bending and a hat bending so that a bent portion at a right angle can be obtained without performing.
【０００５】[0005]
【課題を解決するための手段】上述の如き目的は、本発
明によれば、対向配置されるパンチリテーナおよびカウ
ンタリテーナと、前記パンチリテーナに前記カウンタリ
テーナとの対向方向に所定量のみ移動可能に取り付けら
れたパンチ部材と、前記カウンタリテーナに前記パンチ
リテーナとの対向方向に所定量のみ移動可能に且つ前記
パンチ部材と対向して取り付けられ前記パンチ部材と共
働して板材を挟み持つカウンタホルダと、前記パンチ部
材を前記カウンタホルダの側に第一のばね力により付勢
する第一のばね部材と、前記カウンタホルダを前記パン
チ部材の側に前記第一のばね力より小さい第二のばね力
により付勢する第二のばね部材とを有し、前記カウンタ
リテーナには前記カウンタホルダの前記第二のばね部材
のばね力に抗した前記カウンタリテーナに対する相対移
動により板材の両側に各々Ｌ形折曲を行う曲げ型部が前
記カウンタホルダの両側に各々設けられ、前記パンチリ
テーナには前記パンチ部材の前記第一のばね部材のばね
力に抗した前記パンチリテーナに対する相対移動により
前記板材の両側のＬ形折曲片を各々当該Ｌ形折曲片の延
在方向に加圧する折曲片加圧面部が設けられていること
を特徴とするＵ形曲げ用の板材曲げ型装置、或いは対向
配置されるパンチリテーナおよびカウンタリテーナと、
前記パンチリテーナに前記カウンタリテーナとの対向方
向に所定量のみ移動可能に取り付けられた第一パンチ部
材と、前記第一パンチ部材の先端側に前記カウンタリテ
ーナとの対向方向に所定量のみ移動可能に取り付けられ
た第二パンチ部材と、前記カウンタリテーナに前記パン
チリテーナとの対向方向に所定量のみ移動可能に且つ前
記第二パンチ部材と対向して取り付けられ前記第二パン
チ部材と共働して板材を挟み持つカウンタホルダと、前
記第一パンチ部材を前記カウンタホルダの側に第一のば
ね力により付勢する第一のばね部材と、前記第二パンチ
部材を前記カウンタホルダの側に第一のばね力より小さ
い第二のばね力により付勢する第二のばね部材と、前記
カウンタホルダをパンチ部材の側に前記第二のばね力よ
り小さい第三のばね力により付勢する第三のばね部材
と、前記カウンタホルダの両側に各々回動可能に取り付
けられ前記カウンタホルダの前記第三のばね部材のばね
力に抗した前記カウンタリテーナに対する相対移動に応
じて回動して板材の両側に各々第一のＬ形折曲を行う可
動曲げ型とを有し、前記パンチリテーナには前記可動曲
げ型と各々協働して前記板材の両側の前記第一のＬ形折
曲による第一Ｌ形折曲片の先端側に各々第二のＬ形折曲
を行う曲げ面部が設けられ、前記第一パンチ部材には前
記第二パンチ部材の前記第二のばね部材のばね力に抗し
た前記第一パンチ部材に対する相対移動により前記第一
Ｌ形折曲片を各々当該第一Ｌ形折曲片の延在方向に加圧
する折曲片加圧面部が設けられ、前記曲げ面部は前記第
一パンチ部材の前記第一のばね部材のばね力に抗した前
記パンチリテーナに対する相対移動により板材の両側の
前記第二のＬ形折曲による第二Ｌ形折曲片を各々当該第
二Ｌ形折曲片の板厚方向に加圧するよう構成されている
ことを特徴とするハット曲げ用の板材曲げ型装置によっ
て達成される。According to the present invention, it is possible to move a punch retainer and a counter retainer, which are arranged to face each other, and to move the punch retainer to the punch retainer by a predetermined amount in the facing direction of the counter retainer. A punch member attached to the counter retainer, a counter holder that is movable in the counter retainer in a direction opposite to the punch retainer by a predetermined amount, is attached to face the punch member, and holds a plate member in cooperation with the punch member. A first spring member for urging the punch member toward the counter holder by a first spring force, and a second spring force smaller than the first spring force for pressing the counter holder toward the punch member. A second spring member biased by the counter retainer, and the counter retainer resists the spring force of the second spring member of the counter holder. Bending dies that perform L-shaped bending on both sides of the plate member by relative movement with respect to the counter retainer are provided on both sides of the counter holder, and the punch retainer has a spring force of the first spring member of the punch member. And a bending piece pressing surface portion for pressing the L-shaped bending pieces on both sides of the plate material in the extending direction of the L-shaped bending pieces by relative movement against the punch retainer against each other. A plate bending apparatus for U-shaped bending, or a punch retainer and a counter retainer that are arranged to face each other,
A first punch member attached to the punch retainer so as to be movable by a predetermined amount in the direction opposite to the counter retainer, and a predetermined amount movable in the opposite direction to the counter retainer on the tip side of the first punch member. The second punch member attached to the counter retainer is movable in a direction opposite to the punch retainer by a predetermined amount and is attached to face the second punch member in cooperation with the second punch member. A counter holder that holds the first punch member, a first spring member that biases the first punch member toward the counter holder side with a first spring force, and a second punch member that faces the counter holder side toward the counter holder. A second spring member urged by a second spring force smaller than the spring force, and the counter holder on the side of the punch member and a third spring member smaller than the second spring force. A third spring member urged by a force, and rotatably attached to both sides of the counter holder according to relative movement of the counter holder with respect to the counter retainer against the spring force of the third spring member. A movable bending die that rotates to make a first L-shaped bend on both sides of the plate member is provided, and the punch retainer cooperates with the movable bending die to each of the first bending members on both sides of the plate member. Bending surface portions for performing second L-shaped bending are respectively provided on the tip side of the first L-shaped bent pieces by the L-shaped bending, and the first punch member has the second spring of the second punch member. Bending piece pressing surface portions are provided for pressing the first L-shaped bending pieces in the extending direction of the first L-shaped bending pieces by relative movement with respect to the first punch member against the spring force of the member. , The bending surface portion of the first spring member of the first punch member The second L-shaped bent piece by the second L-shaped bent on both sides of the plate material is pressed in the plate thickness direction of the second L-shaped bent piece by relative movement with respect to the punch retainer against the repulsive force. It is achieved by a plate bending die device for hat bending characterized in that it is constructed.
【０００６】[0006]
【作用】上述の如きＵ形曲げ用の板材曲げ型装置によれ
ば、パンチリテーナとカウンタリテーナとが互いに近付
く方向に相対変位することにより、先ずパンチ部材とカ
ウンタホルダとが共働して板材（板材主部）を挟み持
ち、次にカウンタホルダが第二のばね部材のばね力に抗
してカウンタリテーナに対して相対移動することにより
曲げ型部によって板材の両側に各々Ｌ形折曲が行われ
る。更にパンチリテーナとカウンタリテーナとが互いに
近付く方向に相対変位することにより、パンチ部材が第
一のばね部材のばね力に抗してパンチリテーナに対して
相対移動し、パンチリテーナの折曲片加圧面部が板材の
両側のＬ形折曲片を各々当該Ｌ形折曲片の延在方向に加
圧することにより、Ｌ形折曲片が延在方向に板厚分だけ
板材主部に対して変位し、直角の折曲部によるＵ形曲げ
が完了する。According to the plate bending apparatus for U-shaped bending as described above, the punch retainer and the counter retainer are relatively displaced in the direction in which they approach each other, so that the punch member and the counter holder work in cooperation with each other. The main part of the plate material is sandwiched, and then the counter holder moves relative to the counter retainer against the spring force of the second spring member, so that the bending dies bend the plate material to both sides of the plate material. Be seen. Further, the punch retainer and the counter retainer are relatively displaced in the direction of approaching each other, so that the punch member moves relatively to the punch retainer against the spring force of the first spring member, and the bent piece of the punch retainer is pressed. By pressing the L-shaped bent pieces whose surface portions are on both sides of the plate material in the extending direction of the L-shaped bent pieces, the L-shaped bent piece is displaced in the extending direction by the plate thickness with respect to the plate material main portion. Then, the U-shaped bending by the bent portion at a right angle is completed.
【０００７】またハット曲げ用の板材曲げ型装置によれ
ば、パンチリテーナとカウンタリテーナとが互いに近付
く方向に相対変位することにより、先ずパンチ部材とカ
ウンタホルダとが共働して板材（板材主部）を挟み持
ち、次にカウンタホルダが第三のばね部材のばね力に抗
してカウンタリテーナに対して相対移動することに応じ
て可動曲げ型が回動し、この可動曲げ型の回動により、
板材の両側に各々第一のＬ形折曲が行われると共に、こ
の可動曲げ型とパンチリテーナの曲げ面部とにより前記
第一のＬ形折曲による第一Ｌ形折曲片の先端側に各々第
二のＬ形折曲が行われる。更にパンチリテーナとカウン
タリテーナとが互いに近付く方向に相対変位することに
より、第二パンチ部材が第二のばね部材のばね力に抗し
て第一パンチ部材に対して相対移動し、第一パンチ部材
の折曲片加圧面部が板材の両側の第一Ｌ形折曲片を各々
これの延在方向に加圧することにより、第一Ｌ形折曲片
が延在方向に板厚分だけ板材主部に対して変位し、板材
主部と第一Ｌ形折曲片との折曲部が直角のものになる。
これより更にパンチリテーナとカウンタリテーナとが互
いに近付く方向に相対変位することにより、第一パンチ
部材が第一のばね部材のばね力に抗してパンチリテーナ
に対して相対移動し、パンチリテーナの曲げ面部が第二
Ｌ形折曲片を各々これの板厚方向に加圧することによ
り、第二Ｌ形折曲片が板厚方向に板厚分だけに第一Ｌ形
折曲片に対して変位し、第一Ｌ形折曲片と第二Ｌ形折曲
片との折曲部が直角のものになってハット曲げが完了す
る。Further, according to the plate bending apparatus for hat bending, the punch retainer and the counter retainer are relatively displaced in the direction in which they approach each other, so that the punch member and the counter holder first work together so that the plate member (the plate member main portion). ), And then the movable bending die rotates in response to the counter holder moving relative to the counter retainer against the spring force of the third spring member. ,
The first L-shaped bending is performed on both sides of the plate material, and the movable L-shaped bending die and the bending surface of the punch retainer are attached to the tip side of the first L-shaped bending piece by the first L-shaped bending. A second L-shaped bend is made. Further, the punch retainer and the counter retainer are relatively displaced in a direction of approaching each other, whereby the second punch member moves relatively to the first punch member against the spring force of the second spring member, and the first punch member. The bending piece pressing surfaces of the first L-shaped bending pieces press the first L-shaped bending pieces on both sides of the plate material in the extending direction of the first L-shaped bending pieces, so that the first L-shaped bending pieces extend in the extending direction by the plate thickness. The bent portion of the plate material main portion and the first L-shaped bent piece is displaced at a right angle.
By further relative displacement of the punch retainer and the counter retainer in the direction of approaching each other, the first punch member moves relative to the punch retainer against the spring force of the first spring member, and the punch retainer bends. The surface portion presses the second L-shaped bent piece in the plate thickness direction of each, so that the second L-shaped bent piece is displaced in the plate thickness direction by the plate thickness with respect to the first L-shaped bent piece. Then, the bent portion between the first L-shaped bent piece and the second L-shaped bent piece becomes a right angle, and the hat bending is completed.
【０００８】[0008]
【実施例】以下に本発明の実施例を図面を用いて詳細に
説明する。Embodiments of the present invention will be described in detail below with reference to the drawings.
【０００９】先ず本発明による板材曲げ型装置の説明に
先だって図８〜図１０を用いてプッシュ式のＬ形折曲の
手順について説明する。図８〜図１０に於いて、板材Ｐ
は折曲線部に微細な連結部Ｊを残して折曲線に沿って設
けられた折曲線スリットＳａにより板材主部Ｐａと折曲
片Ｐｂとに区画されている。また連結部Ｊの両側には折
曲線スリットＳａに直交する方向に板材Ｐの板厚にほぼ
等しい長さだけ折曲線スリットＳａより折曲片Ｐｂに延
在する連結部サイドスリットＳｂが形成されている。Prior to the description of the plate bending apparatus according to the present invention, the push-type L-shaped bending procedure will be described with reference to FIGS. 8 to 10, the plate material P
Is divided into a plate material main portion Pa and a bending piece Pb by a folding curve slit Sa provided along the folding curve while leaving a minute connecting portion J in the folding curve portion. Further, on both sides of the connecting portion J, connecting portion side slits Sb extending from the bending curve slit Sa to the bending piece Pb by a length substantially equal to the plate thickness of the plate material P are formed in a direction orthogonal to the bending curve slit Sa. There is.
【００１０】この板材ＰのＬ形折曲に際しては、先ず図
９にされている如く、折曲線スリットＳａに沿って折曲
片Ｐｂを板材主部Ｐａに対してほぼ９０度折曲し、この
折曲完了後に図１０に示されている如く、折曲片Ｐｂを
当該折曲片Ｐｂの延在方向、換言すれば板材主部Ｐａの
板厚方向に押圧し、連結部Ｊを圧縮変形させつつ折曲片
Ｐｂを板材主部Ｐａの板厚分だけ板材主部Ｐａに対して
変位させ、板材主部Ｐａの端面部に折曲片Ｐｂが重り合
うようにする。When the plate P is bent in the L shape, first, as shown in FIG. 9, the bending piece Pb is bent along the bending curve slit Sa with respect to the plate main portion Pa by approximately 90 degrees. After the bending is completed, as shown in FIG. 10, the bending piece Pb is pressed in the extending direction of the bending piece Pb, in other words, in the plate thickness direction of the plate material main portion Pa, and the connecting portion J is compressed and deformed. Meanwhile, the bent piece Pb is displaced with respect to the plate material main portion Pa by the plate thickness of the plate material main portion Pa so that the bent piece Pb overlaps the end face portion of the plate material main portion Pa.
【００１１】図１〜図３は本発明によるＵ形曲げ用の板
材曲げ型装置の一実施例を示している。これらの図に於
いて、１はパンチリテーナを、３はカウンタリテーナを
各々示している。1 to 3 show one embodiment of a plate bending apparatus for U-shaped bending according to the present invention. In these figures, 1 is a punch retainer and 3 is a counter retainer.
【００１２】パンチリテーナ１はプレスブレーキの固定
の中間板５に締め金７により固定装着され、カウンタリ
テーナ３は締め板９により上下動可能な下部テーブル１
１に固定装着され、パンチリテーナ１とカウンタリテー
ナ３とは上下に対向配置されている。The punch retainer 1 is fixedly mounted on a fixed intermediate plate 5 of the press brake by a clamp 7, and the counter retainer 3 is vertically movable by a clamp plate 9 on a lower table 1.
The punch retainer 1 and the counter retainer 3 are fixedly mounted on the upper and lower sides of the counter 1.
【００１３】パンチリテーナ１にはスルーボルト１３に
よりパンチ部材１５がカウンタリテーナ３との対向方
向、即ち上下方向に所定量のみ移動可能に取り付けられ
ている。パンチ部材１５は、垂直な両ストレート側面１
７ａ、１７ｂと、水平方向に平らな下底面１７ｃとを有
している。A punch member 15 is attached to the punch retainer 1 by a through bolt 13 so as to be movable in a direction opposite to the counter retainer 3, that is, in a vertical direction by a predetermined amount. The punch member 15 has two straight vertical side surfaces 1.
It has 7a, 17b and a lower bottom surface 17c which is flat in the horizontal direction.
【００１４】パンチリテーナ１とパンチ部材１５の頂部
との間には圧縮コイルばね１９が所定の予荷重を与えら
れた状態にて装着されている。圧縮コイルばね１９はパ
ンチ部材１５をカウンタリテーナ３の側、即ち下方へ比
較的大きい第一のばね力をもって付勢している。A compression coil spring 19 is mounted between the punch retainer 1 and the top of the punch member 15 under a predetermined preload. The compression coil spring 19 biases the punch member 15 toward the counter retainer 3, that is, downward, with a relatively large first spring force.
【００１５】またパンチリテーナ１はパンチ部材１５の
両ストレート側面１７ａ、１７ｂの両側方に各々水平方
向に延在する下底面２１、２３を有しており、下底面２
１、２３は、図示の実施例に於いては二枚重ね同時Ｕ形
曲げのために、各々パンチ部材１５のストレート側面１
７ａ、１７ｂ側の二箇所に折曲片加圧面部２１ａ、２３
ａと２１ｂ、２３ｂとを板材Ｐの板厚分だけ段差をもっ
て構成されている。The punch retainer 1 has lower bottom surfaces 21 and 23 extending in the horizontal direction on both sides of both straight side surfaces 17a and 17b of the punch member 15, respectively.
1 and 23 are straight side surfaces 1 of the punch member 15 for double U-shaped bending in the illustrated embodiment.
Bending piece pressing surface portions 21a, 23 are provided at two locations on the 7a, 17b side.
a and 21b and 23b are formed with a step difference by the plate thickness of the plate material P.
【００１６】カウンタリテーナ３にはスルーボルト２５
によりカウンタホルダ２７がパンチリテーナ１との対向
方向、即ち上下方向に所定量のみ移動可能に且つパンチ
部材１５と対向して取り付けられている。カウンタホル
ダ２７はパンチ部材１５の下底面１７に対向する水平方
向に平らな上面２９を有している。The counter retainer 3 has a through bolt 25.
Thus, the counter holder 27 is attached so as to be movable in a direction facing the punch retainer 1, that is, in the vertical direction by a predetermined amount and facing the punch member 15. The counter holder 27 has a horizontally flat upper surface 29 facing the lower bottom surface 17 of the punch member 15.
【００１７】カウンタリテーナ３とカウンタホルダ２７
の底部との間には圧縮コイルばね３１が所定の予荷重を
与えられた状態にて装着されている。圧縮コイルばね３
１はカウンタホルダ２７をパンチリテーナ１の側、即ち
上方へ第一のばね力より小さい第二のばね力をもって付
勢している。Counter retainer 3 and counter holder 27
A compression coil spring 31 is mounted between the bottom of the compression coil spring 31 and the bottom of the compression coil spring 31 with a predetermined preload. Compression coil spring 3
1 urges the counter holder 27 toward the punch retainer 1, that is, upward, with a second spring force smaller than the first spring force.
【００１８】カウンタリテーナ３のカウンタホルダ２７
の配置部の両側には各々曲げ型部３３、３５が形成され
ている。曲げ型部３３、３５は図１に示されている如
く、最上昇位置にあるカウンタホルダ２７の上面２９と
整合する高さにまで上方に突出形成され、カウンタホル
ダ２７は両側の垂直方向の各ストレート側面２７ａ、２
７ｂにて曲げ型部３３、３５の垂直方向のストレート側
面３３ａ、３５ａと摺接している。このカウンタホルダ
２７のストレート側面２７ａ、２７ｂと曲げ型部３３、
３５のストレート側面３３ａ、３５ａとの摺接部は各々
パンチ部材１５のストレート側面１７ａ、１７ｂより二
枚分の板材Ｐの板厚分だけ外側方へ変位した位置に配置
されている。Counter holder 27 of counter retainer 3
Bending mold parts 33 and 35 are formed on both sides of the arrangement part of the above. As shown in FIG. 1, the bending mold portions 33 and 35 are formed so as to project upward to a height matching the upper surface 29 of the counter holder 27 at the highest position, and the counter holder 27 is provided on both sides in the vertical direction. Straight side surfaces 27a, 2
7b is in sliding contact with the straight side surfaces 33a, 35a of the bending mold parts 33, 35 in the vertical direction. The straight side surfaces 27a and 27b of the counter holder 27 and the bending mold 33,
The sliding contact portions of the straight side surfaces 33a and 35a of the plate 35 are arranged at positions displaced outward from the straight side surfaces 17a and 17b of the punch member 15 by the plate thickness of two plate materials P, respectively.
【００１９】次に上述の如き構成よりなるＵ形曲げ用の
板材曲げ型装置の動作について説明する。Next, the operation of the plate-shaped bending die apparatus for U-shaped bending having the above construction will be described.
【００２０】カウンタホルダ２７の上面２９上に二枚の
板材Ｐ1 とＰ2 とを上下に重ねて配置する。この場合、
上側の板材Ｐ1 はパンチ部材１５のストレート側面１７
ａと１７ｂとの間の幅寸法に等しい間隔を於いて二つの
折曲線スリットＳａを形成され、また下側の板材Ｐ2 は
パンチ部材１５のストレート側面１７ａと１７ｂとの間
の幅寸法に板材Ｐ1 の板厚の２倍に相当する寸法を加え
た間隔を於いて二つの折曲線スリットＳａを形成され、
この板材Ｐ1 と板材Ｐ2 とは、図示されている如く、互
いに折曲線スリット間の中央合わせ状態状態にて、板材
Ｐ1 の各折曲線スリットＳａがパンチ部材１５のストレ
ート側面１７ａ、１７ｂの位置と各々整合するようにカ
ウンタホルダ２７の上面２９上に水平載置する。これに
より板材Ｐ1 、板材Ｐ2 の各々の両側の折曲片Ｐｂは曲
げ型部３３、３５上に位置するようになる。On the upper surface 29 of the counter holder 27, the two plate members P1 and P2 are arranged one above the other. in this case,
The upper plate P1 is a straight side surface 17 of the punch member 15.
Two folding curve slits Sa are formed at an interval equal to the width dimension between a and 17b, and the lower plate material P2 has a width dimension between the straight side surfaces 17a and 17b of the punch member 15 and is a plate material P1. Two folding curve slits Sa are formed at intervals with a dimension corresponding to twice the plate thickness of
As shown in the drawing, the plate material P1 and the plate material P2 are aligned with each other in the center of the bending curve slits. It is placed horizontally on the upper surface 29 of the counter holder 27 so as to be aligned. As a result, the bent pieces Pb on both sides of each of the plate material P1 and the plate material P2 come to be positioned on the bending die parts 33 and 35.
【００２１】次に上述の如きセット状態にて下部テーブ
ル１１を上昇移動させる。すると、板材Ｐ1 、Ｐ2 は、
カウンタリテーナ３と共にカウンタホルダ２７の上面２
９上に載置された状態にて上昇し、パンチ部材１５の下
底面１７ｃと当接するようになる。これにより板材Ｐ1
、Ｐ2 の各々の板材主部Ｐａが、図１に示されている
如く、重合状態にてカウンタホルダ２７の上面２９とパ
ンチ部材１５の下底面１７ｃとにより挟まれてこれらよ
りクランプされる。Next, the lower table 11 is moved upward in the set state as described above. Then, the plate materials P1 and P2 are
The upper surface 2 of the counter holder 27 together with the counter retainer 3
9 rises in a state of being placed on 9 and comes into contact with the lower bottom surface 17c of the punch member 15. As a result, the plate material P1
, P2, the plate member main portions Pa are sandwiched by the upper surface 29 of the counter holder 27 and the lower bottom surface 17c of the punch member 15 and clamped by them in the overlapping state, as shown in FIG.
【００２２】この状態より更に下部テーブル１１が上昇
することにより、カウンタホルダ２７は圧縮コイルばね
３１のばね力に抗してカウンタリテーナ３に対して降下
移動するようになり、このカウンタホルダ２７の降下に
応じて板材Ｐ1 、Ｐ2 の一方の側の各折曲片Ｐｂが曲げ
型部３３のストレート側面３３ａとパンチ部材１５のス
トレート側面１７ａとの間に、また板材Ｐ1 、Ｐ2 の他
方の側の各折曲片Ｐｂが曲げ型部３５のストレート側面
３５ａとパンチ部材１５のストレート側面１７ｂとの間
に各々入り込むようにして各折曲線スリットＳａに沿っ
て板材主部Ｐａに対し立ち上げ折曲されるようになる。By further raising the lower table 11 from this state, the counter holder 27 comes to move downward with respect to the counter retainer 3 against the spring force of the compression coil spring 31, and the counter holder 27 is lowered. Accordingly, the bent pieces Pb on one side of the plate materials P1 and P2 are provided between the straight side surface 33a of the bending die portion 33 and the straight side surface 17a of the punch member 15, and on the other side of the plate materials P1 and P2. The bent piece Pb is inserted between the straight side surface 35a of the bending die 35 and the straight side surface 17b of the punch member 15 and is bent up along the folding curve slit Sa with respect to the plate main portion Pa. Like
【００２３】図２に示されている如く、カウンタホルダ
２７が最降下位置まで降下すると、板材Ｐ1 、Ｐ2 の各
々の両側の折曲片Ｐｂは、板材主部Ｐａに対してほぼ９
０度折曲され、パンチ部材１５のストレート側面１７
ａ、１７ｂに沿って垂直に立ち上がることになる。As shown in FIG. 2, when the counter holder 27 is lowered to the lowest position, the bent pieces Pb on both sides of each of the plate members P1 and P2 are approximately 9 with respect to the plate member main portion Pa.
The straight side surface 17 of the punch member 15 is bent 0 degrees.
It will rise vertically along a and 17b.
【００２４】これより更に下部テーブル１１が上昇する
ことにより、板材Ｐ1 、Ｐ2 の各折曲片Ｐｂの上端面が
パンチリテーナ１の折曲片加圧面部２１ａ、２３ａと２
１ｂ、２３ｂと当接するようになる。そして更に下部テ
ーブル１１が上昇を続けることにより、パンチ部材１５
が圧縮コイルばね１９のばね力に抗してパンチリテーナ
１に対して上昇移動するようになり、この上昇移動によ
り各折曲片Ｐｂが折曲片加圧面部２１ａ、２３ａと２１
ｂ、２３ｂによって各折曲片Ｐｂの延在方向、即ち板材
主部Ｐａの板厚方向に下方へ相対的に押圧されるように
なる。As the lower table 11 is further raised, the upper end surfaces of the bent pieces Pb of the plate materials P1 and P2 are bent by the bent piece pressing surface portions 21a, 23a and 2 of the punch retainer 1.
It comes into contact with 1b and 23b. Then, as the lower table 11 continues to rise, the punch member 15
Moves upward with respect to the punch retainer 1 against the spring force of the compression coil spring 19, and by this upward movement, each bending piece Pb bends the bending piece pressing surface portions 21a, 23a and 21.
By b and 23b, the bending pieces Pb are relatively pressed downward in the extending direction, that is, in the plate thickness direction of the plate material main portion Pa.
【００２５】この押圧により、連結部Ｊ（図８〜図１０
参照）が圧縮変形しつつ、図３に示されている如く、各
折曲片Ｐｂが板材主部Ｐａの板厚分だけ板材主部Ｐａに
対して下方に変位し、板材主部Ｐａの両端面部に各々折
曲片Ｐｂが重り合うようになる。これにより板材Ｐ1 、
Ｐ2 のプッシュ式の両側Ｌ形折曲によるＵ形曲げが完了
する。By this pressing, the connecting portion J (FIGS. 8 to 10)
As shown in FIG. 3, each bent piece Pb is displaced downward with respect to the plate material main portion Pa by the plate thickness of the plate material main portion Pa as shown in FIG. The bent pieces Pb overlap each other on the surface portion. As a result, the plate material P1,
U-shaped bending is completed by the push-type L-shaped bending on both sides of P2.
【００２６】図４〜図７は本発明によるハット曲げ用の
板材曲げ型装置の実施例を示している。尚、図４〜図７
に於いて、図１〜図３に対応する部分は図１〜図３に付
した符号と同一の符号により示されている。4 to 7 show an embodiment of a plate bending die apparatus for hat bending according to the present invention. 4 to 7
1 to 3, parts corresponding to those in FIGS. 1 to 3 are denoted by the same reference numerals as those in FIGS.
【００２７】このハット曲げ用の板材曲げ型装置に於い
ては、パンチリテーナ１にはスルーボルト４１により第
一パンチ部材４３がカウンタリテーナ３との対向方向、
即ち上下方向に所定量のみ移動可能に取り付けられてい
る。パンチリテーナ１と第一パンチ部材４３の頂部との
間には圧縮コイルばね４５が所定の予荷重を与えられた
状態にて装着されている。圧縮コイルばね４５は第一パ
ンチ部材４３をカウンタリテーナ３の側、即ち下方へ比
較的大きい第一のばね力をもって付勢している。In the plate bending apparatus for hat bending, the punch retainer 1 is provided with the through bolts 41 so that the first punch member 43 faces the counter retainer 3.
That is, it is mounted so as to be movable in the vertical direction by a predetermined amount. A compression coil spring 45 is mounted between the punch retainer 1 and the top of the first punch member 43 in a state where a predetermined preload is applied. The compression coil spring 45 biases the first punch member 43 toward the counter retainer 3, that is, downward, with a relatively large first spring force.
【００２８】第一パンチ部材４３にはスルーボルト４７
により第二パンチ部材４９がカウンタリテーナ３との対
向方向、即ち上下方向に所定量のみ移動可能に取り付け
られている。第一パンチ部材４３と第二パンチ部材４９
の頂部との間には圧縮コイルばね５３が所定の予荷重を
与えられた状態にて装着されている。圧縮コイルばね５
３はパンチ部材１５をカウンタリテーナ３の側、即ち下
方へ前記第一のばね力より小さい第二のばね力をもって
付勢している。A through bolt 47 is attached to the first punch member 43.
Thus, the second punch member 49 is attached so as to be movable by a predetermined amount in the direction facing the counter retainer 3, that is, in the vertical direction. First punch member 43 and second punch member 49
A compression coil spring 53 is mounted between the top and the top of the shaft under a predetermined preload. Compression coil spring 5
3 urges the punch member 15 toward the counter retainer 3, that is, downward, with a second spring force smaller than the first spring force.
【００２９】第二パンチ部材４９は垂直な両ストレート
側面５１ａ、５１ｂと水平方向に平らな下底面５１ｃと
を有しており、ストレート側面５１ａと５１ｂとの間
隔、換言すれば第二パンチ部材４９の幅が第一パンチ部
材４３の幅より板材Ｐの板厚の２倍に相当する寸法だけ
小さいことにより、第一パンチ部材４３は第二パンチ部
材４９の支持部の両側にストレート側面５１ａ、５１ｂ
の各々に対応して板材Ｐの板厚分の幅寸法の折曲片加圧
面部４３ａ、４３ｂが設けられいる。尚、この折曲片加
圧面部４３ａ、４３ｂの部分には各々、板材Ｐの連結部
Ｊ（図８〜図１０参照）を受け入れるための窪み部４３
ｃが形成されている。The second punch member 49 has both vertical straight side surfaces 51a and 51b and a horizontally flat lower bottom surface 51c. The distance between the straight side surfaces 51a and 51b, in other words, the second punch member 49. Is smaller than the width of the first punch member 43 by a dimension corresponding to twice the plate thickness of the plate material P, the first punch member 43 has straight side surfaces 51a, 51b on both sides of the supporting portion of the second punch member 49.
The bent piece pressing surface portions 43a and 43b each having a width corresponding to the plate thickness of the plate material P are provided corresponding to each of the above. The bent piece pressing surface portions 43a and 43b each have a recess 43 for receiving the connecting portion J of the plate P (see FIGS. 8 to 10).
c is formed.
【００３０】またパンチリテーナ１は第一パンチ部材４
３の支持部の両側に各々水平方向に延在する下底面２
１、２３を有しており、下底面２１、２３は、この実施
例に於いては曲げ面部をなしている。尚、これより以
降、下底面２１、２３は曲げ面部２１、２３と称する。Further, the punch retainer 1 includes the first punch member 4
Lower bottom surfaces 2 extending horizontally on both sides of the support portion 3
1 and 23, and the lower bottom surfaces 21 and 23 are bent surface portions in this embodiment. From this point onward, the lower bottom surfaces 21 and 23 are referred to as bending surface portions 21 and 23.
【００３１】カウンタホルダ２７の両側部には各々枢軸
５５、５７より可動曲げ型５９、６１が各々上下方向に
回動可能に装着されている。可動曲げ型５９、６１は、
カウンタホルダ２７が図４に示されている如き初期位置
にあるときにはカウンタリテーナ３の両側の側部型回動
案内部６３、６５上に乗って水平姿勢を保ち、カウンタ
ホルダ２７が圧縮コイルばね３１のばね力に抗してカウ
ンタリテーナ３に対して降下移動することに応じて、図
５に示されている如く、側部型回動案内部６３、６５と
の当接関係により立ち上がり回動して垂直に立ち上がる
ようになっている。可動曲げ型５９、６１は図５に示さ
れている如く、垂直に立ち上がった時に曲げ面部２１、
２３と対向する先端面部６７、６９を有している。On both sides of the counter holder 27, movable bending dies 59 and 61 are mounted by pivots 55 and 57 respectively so as to be vertically rotatable. The movable bending molds 59 and 61 are
When the counter holder 27 is at the initial position as shown in FIG. 4, the counter holder 27 rides on the side-type rotation guide portions 63 and 65 on both sides of the counter retainer 3 to maintain a horizontal posture, and the counter holder 27 is compressed by the compression coil spring 31. In response to the descending movement with respect to the counter retainer 3 against the spring force of the, as shown in FIG. It stands up vertically. As shown in FIG. 5, the movable bending dies 59 and 61 have bending surface portions 21 and
It has the front end surface portions 67 and 69 facing 23.
【００３２】尚、圧縮コイルばね３１のばね力は、圧縮
コイルばね５３の第二のばね力より小さい第三のばね力
とされている。The compression coil spring 31 has a third spring force which is smaller than the second spring force of the compression coil spring 53.
【００３３】次に上述の如き構成よりなるハット曲げ用
の板材曲げ型装置の動作について説明する。Next, the operation of the plate bending mold apparatus for hat bending having the above-mentioned structure will be described.
【００３４】カウンタホルダ２７の上面２９上に板材Ｐ
を配置する。この場合、板材Ｐは第二パンチ部材４９の
ストレート側面５１ａと５１ｂとの間の幅寸法に等しい
間隔を於いて二つの第一折曲線スリットＳａ1 を形成さ
れ、また各第一折曲線スリットＳａ1 より下所定量外側
方へ変位した位置に第二折曲線スリットＳａ2 を形成さ
れ、この板材Ｐは板材Ｐの各第一折曲線スリットＳａ1
がパンチ部材４９のストレート側面５１ａ、５１ｂの位
置と各々整合するようにカウンタホルダ２７の上面２９
および水平状態の可動曲げ型５９、６１上に水平載置す
る。On the upper surface 29 of the counter holder 27, the plate material P
To place. In this case, the plate material P is formed with two first folding curve slits Sa1 at an interval equal to the width dimension between the straight side surfaces 51a and 51b of the second punch member 49, and each first folding curve slit Sa1 A second folding curve slit Sa2 is formed at a position displaced downward by a predetermined amount, and the plate material P is formed by each first folding curve slit Sa1 of the plate material P.
The upper surface 29 of the counter holder 27 so that each of them aligns with the positions of the straight side surfaces 51a and 51b of the punch member 49.
And horizontally placed on the movable bending dies 59 and 61 in the horizontal state.
【００３５】次に上述の如きセット状態にて下部テーブ
ル１１を上昇移動させる。すると、板材Ｐは、カウンタ
リテーナ３と共にカウンタホルダ２７の上面２９上に載
置された状態にて上昇し、第一パンチ部材４９の下底面
５１ｃと当接するようになる。これにより板材Ｐの板材
主部Ｐａが、図４に示されている如く、カウンタホルダ
２７の上面２９と第一パンチ部材４９の下底面５１ｃと
により挟まれてこれらよりクランプされる。Next, the lower table 11 is moved upward in the set state as described above. Then, the plate member P ascends while being placed on the upper surface 29 of the counter holder 27 together with the counter retainer 3, and comes into contact with the lower bottom surface 51c of the first punch member 49. As a result, the plate material main portion Pa of the plate material P is sandwiched between the upper surface 29 of the counter holder 27 and the lower bottom surface 51c of the first punch member 49 and clamped by these, as shown in FIG.
【００３６】この状態より更に下部テーブル１１が上昇
することにより、カウンタホルダ２７は圧縮コイルばね
３１のばね力に抗してカウンタリテーナ３に対し降下移
動するようになり、このカウンタホルダ２７の降下に応
じて可動曲げ型５９、６１が各々側部型回動案内部６
３、６５との当接関係により立ち上がり回動する。この
可動曲げ型５９、６１の回動により、板材Ｐの両側が各
々第一折曲線スリットＳａ1 を折曲線として折り曲が
り、この折曲が進むことにより板材Ｐの両側先端がパン
チリテーナ１に当接し、パンチリテーナ１の曲げ面部２
１、２３と可動曲げ型５９、６１の先端面部６７、６９
とにより板材Ｐの両側先端が各々第二折曲線スリットＳ
ａ2 を折曲線として折り曲がる。When the lower table 11 is further raised from this state, the counter holder 27 is moved downward with respect to the counter retainer 3 against the spring force of the compression coil spring 31, and the counter holder 27 is lowered. Accordingly, the movable bending dies 59 and 61 are respectively the side die rotation guide portions 6
It rises and rotates due to the abutting relationship with 3, 65. By the rotation of the movable bending dies 59 and 61, both sides of the plate material P are bent with the first bending curve slit Sa1 as a folding curve, and as the bending progresses, both ends of the plate material P come into contact with the punch retainer 1. , Bending surface part 2 of punch retainer 1
1, 23 and the tip end surface portions 67, 69 of the movable bending dies 59, 61
The second folding curve slits S are formed at both ends of the plate P by
Bend with a2 as the fold line.
【００３７】図５に示されている如く、カウンタホルダ
２７が降下限度位置まで降下して可動曲げ型５９、６１
が垂直な最終立ち上り位置に位置すると、板材Ｐの両側
の第一折曲線スリットＳａ1 を折曲線とした第一のＬ形
折曲による各第一Ｌ形折曲片Ｐｂ1 は可動曲げ型５９、
６１と第二パンチ部材４９のストレート側面５１ａ、５
１ｂとに挟まれて起立して第一のＬ形折曲を完了し、そ
の各起立先端面が第一パンチ部材４３の折曲片加圧面部
４３ａ、４３ｂに対接するようになる。As shown in FIG. 5, the counter holder 27 is lowered to the lower limit position and the movable bending dies 59 and 61 are moved.
Are positioned in the vertical final rising position, each first L-shaped bending piece Pb1 by the first L-shaped bending with the first bending curve slit Sa1 on both sides of the plate P as a bending curve is moved by the movable bending die 59,
61 and straight side surfaces 51a, 5 of the second punch member 49
The first L-shaped bending is completed by being erected by being sandwiched between the first punch member 1b and the bending piece pressing surface portions 43a and 43b of the first punch member 43.
【００３８】これより更に下部テーブル１１が上昇する
ことにより、第二パンチ部材４９が圧縮コイルばね５３
のばね力に抗して第一パンチ部材４３に対し上昇移動す
るようになり、この上昇移動により各第一Ｌ形折曲片Ｐ
ｂ1 が折曲片加圧面部４３ａ、４３ｂによって各第一Ｌ
形折曲片Ｐｂ1 の延在方向、即ち板材主部Ｐａの板厚方
向に下方へ相対的に押圧されるようになる。As the lower table 11 is further raised, the second punch member 49 is compressed by the compression coil spring 53.
Of the first L-shaped bent piece P due to the upward movement of the first punch member 43 against the spring force of the first punch member 43.
b1 is each of the first L by the bending piece pressing surface portions 43a and 43b.
The bending piece Pb1 is relatively pressed downward in the extending direction, that is, in the plate thickness direction of the plate material main portion Pa.
【００３９】この押圧により、第一折曲線スリットＳａ
1 部分の連結部Ｊ（図８〜図１０参照）が圧縮変形しつ
つ、図６に示されている如く、各第一Ｌ形折曲片Ｐｂ1
が板材主部Ｐａの板厚分だけ板材主部Ｐａに対して下方
に変位し、板材主部Ｐａの両端面部に各々第一Ｌ形折曲
片Ｐｂ1 が重り合うようになる。またこの時には第二折
曲線スリットＳａ2 を折曲線とした第二のＬ形折曲によ
る各第二Ｌ形折曲片Ｐｂ2 がパンチリテーナ１の曲げ面
部２１、２３と可動曲げ型５９、６１の先端面部６７、
６９とに挟まれて水平片となり、第二のＬ形折曲が完了
する。By this pressing, the first bending curve slit Sa
As shown in FIG. 6, each first connecting portion J (see FIGS. 8 to 10) is compressed and deformed, and each first L-shaped bent piece Pb1 is formed.
Is displaced downward with respect to the plate material main portion Pa by the plate thickness of the plate material main portion Pa, and the first L-shaped bent pieces Pb1 are overlapped on both end surface portions of the plate material main portion Pa. Further, at this time, each second L-shaped bending piece Pb2 by the second L-shaped bending with the second bending curve slit Sa2 as a bending curve is formed by the bending surface portions 21 and 23 of the punch retainer 1 and the tips of the movable bending dies 59 and 61. Face 67,
It is sandwiched by 69 and becomes a horizontal piece, and the second L-shaped bending is completed.
【００４０】これより更に下部テーブル１１が上昇する
ことにより、第二パンチ部材４９が圧縮コイルばね５３
のばね力に抗して第一パンチ部材４３に対し上昇移動す
るようになり、この上昇移動により各第一Ｌ形折曲片Ｐ
ｂ1 が折曲片加圧面部４３ａ、４３ｂによって各第一Ｌ
形折曲片Ｐｂ1 の延在方向、即ち板材主部Ｐａの板厚方
向に下方へ相対的に押圧されるようになる。When the lower table 11 is further raised, the second punch member 49 is compressed by the compression coil spring 53.
Of the first L-shaped bent piece P due to the upward movement of the first punch member 43 against the spring force of the first punch member 43.
b1 is each of the first L by the bending piece pressing surface portions 43a and 43b.
The bending piece Pb1 is relatively pressed downward in the extending direction, that is, in the plate thickness direction of the plate material main portion Pa.
【００４１】この押圧により、連結部Ｊ（図８〜図１０
参照）が圧縮変形しつつ、図６に示されている如く、各
第一Ｌ形折曲片Ｐｂ1 が板材主部Ｐａの板厚分だけ板材
主部Ｐａに対して下方に変位し、板材主部Ｐａの両端面
部に各々第一Ｌ形折曲片Ｐｂ1 が重り合うようになる。By this pressing, the connecting portion J (see FIGS. 8 to 10)
As shown in FIG. 6, each first L-shaped bent piece Pb1 is displaced downward relative to the plate material main portion Pa by the plate thickness of the plate material main portion Pa as shown in FIG. The first L-shaped bent pieces Pb1 overlap with each other on both end portions of the portion Pa.
【００４２】これより更に下部テーブル１１が上昇する
ことにより、第一パンチ部材４３が圧縮コイルばね４５
のばね力に抗してパンチリテーナ１に対し上昇移動する
ようになり、この上昇移動により各第二Ｌ形折曲片Ｐｂ
2 がパンチリテーナ１の曲げ面部２１、２３によって各
第一Ｌ形折曲片Ｐｂ1 の延在方向、即ち第二Ｌ形折曲片
Ｐｂ2 の板厚方向に下方へ相対的に押圧されるようにな
る。As the lower table 11 is further raised, the first punch member 43 is compressed by the compression coil spring 45.
Of the second L-shaped bent piece Pb due to the upward movement of the punch retainer 1 against the spring force of the punch retainer 1.
2 is relatively pressed downward by the bending surface portions 21 and 23 of the punch retainer 1 in the extending direction of each first L-shaped bent piece Pb1, that is, in the plate thickness direction of the second L-shaped bent piece Pb2. Become.
【００４３】この押圧により、第二折曲線スリットＳａ
2 部分の連結部Ｊ（図８〜図１０参照）が圧縮変形しつ
つ、図７に示されている如く、各第二Ｌ形折曲片Ｐｂ2
が、自身の板厚分だけ第一Ｌ形折曲片Ｐｂ1 に対して下
方に変位し、各第一Ｌ形折曲片Ｐｂ1 の側面に重り合う
ようになる。これにより直角折曲によるハット曲げが完
了する。By this pressing, the second folding curve slit Sa
As shown in FIG. 7, the second connecting portion J (see FIGS. 8 to 10) is compressed and deformed, and each second L-shaped bent piece Pb2 is formed.
Is displaced downward with respect to the first L-shaped bent pieces Pb1 by an amount corresponding to its own plate thickness and overlaps the side surface of each first L-shaped bent piece Pb1. This completes the hat bending by the right-angled bending.
【００４４】以上に於ては、本発明を特定の実施例につ
いて詳細に説明したが、本発明は、これらに限定される
ものではなく、本発明の範囲内にて種々の実施例が可能
であることは当業者にとって明らかであろう。In the above, the present invention has been described in detail with reference to specific embodiments, but the present invention is not limited to these, and various embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.
【００４５】[0045]
【発明の効果】以上の説明から理解される如く、本発明
による板材曲げ型装置によれば、パンチリテーナとカウ
ンタリテーナとが互いに近付く方向に相対変位すること
により、先ずパンチ部材とカウンタホルダとが共働して
板材（板材主部）を挟み持ち、次にカウンタホルダが第
二のばね部材のばね力に抗してカウンタリテーナに対し
て相対移動することにより曲げ型部、或いは可動曲げ型
によって板材の両側に各々Ｌ形折曲が行われ、これより
更にパンチリテーナとカウンタリテーナとが互いに近付
く方向に相対変位することにより、パンチ部材が第一の
ばね部材のばね力に抗してパンチリテーナに対して相対
移動し、パンチリテーナの折曲片加圧面部が板材の両側
のＬ形折曲片を各々当該Ｌ形折曲片の延在方向に加圧す
ることにより、Ｌ形折曲片が延在方向に板厚分だけ板材
主部に対して変位し、直角の折曲部によるＵ形曲げが行
われるから、板材の板厚が厚くともさほど大きい折曲加
工力を必要とすることなくＵ形曲げ、ハット曲げが行わ
れるようになり、また板材の板厚が厚くとも直角の折曲
部が得られるようになる。As can be understood from the above description, according to the plate bending apparatus of the present invention, the punch retainer and the counter retainer are relatively displaced in the direction of approaching each other, so that the punch member and the counter holder are first displaced. Hold the plate material (plate material main part) in cooperation with each other, and then the counter holder moves relative to the counter retainer against the spring force of the second spring member, so that the bending die part or the movable bending die is used. L-shaped bending is performed on both sides of the plate material, and the punch retainer and the counter retainer are further displaced relative to each other in the direction toward each other, whereby the punch member resists the spring force of the first spring member. Relative to each other, and the bent piece pressing surface portions of the punch retainer press the L-shaped bent pieces on both sides of the plate material in the extending direction of the L-shaped bent pieces. The bending piece is displaced in the extending direction by the thickness of the plate with respect to the plate main part, and the U-shaped bending is performed by the bent part at a right angle, so a large bending force is required even if the plate is thick Without this, U-shaped bending and hat bending can be performed, and a bent portion at a right angle can be obtained even if the plate material is thick.
【図１】本発明によるＵ形曲げ用の板材曲げ型装置の一
実施例を板材クランプ状態について示す縦断面図であ
る。FIG. 1 is a longitudinal sectional view showing an example of a plate material bending die apparatus for U-shaped bending according to the present invention in a plate material clamped state.
【図２】本発明によるＵ形曲げ用の板材曲げ型装置の一
実施例を折曲第一段階完了状態について示す縦断面図で
ある。FIG. 2 is a vertical cross-sectional view showing an example of a plate material bending die apparatus for U-shaped bending according to the present invention in a state where the bending first stage is completed.
【図３】本発明によるＵ形曲げ用の板材曲げ型装置の一
実施例を折曲第二段階完了状態について示す縦断面図で
ある。FIG. 3 is a vertical cross-sectional view showing an example of a plate bending apparatus for U-shaped bending according to the present invention in a state where the second stage of bending is completed.
【図４】本発明によるハット曲げ用の板材曲げ型装置の
一実施例を板材クランプ状態について示す縦断面図であ
る。FIG. 4 is a vertical cross-sectional view showing an embodiment of a plate bending apparatus for hat bending according to the present invention in a plate clamped state.
【図５】本発明によるハット曲げ用の板材曲げ型装置の
一実施例を折曲第一段階完了状態について示す縦断面図
である。FIG. 5 is a vertical cross-sectional view showing an example of a plate bending apparatus for hat bending according to the present invention in a state where the bending first stage is completed.
【図６】本発明によるハット曲げ用の板材曲げ型装置の
一実施例を折曲第二段階完了状態について示す縦断面図
である。FIG. 6 is a vertical cross-sectional view showing an example of a plate bending apparatus for hat bending according to the present invention in a state where the second stage of bending is completed.
【図７】本発明によるハット曲げ用の板材曲げ型装置の
一実施例を折曲第三段階完了状態について示す縦断面図
である。FIG. 7 is a vertical cross-sectional view showing an example of a plate bending apparatus for hat bending according to the present invention in a state where the bending third stage is completed.
【図８】プッシュ式のＬ形折曲に於ける板材の初期形状
を示す斜視図である。FIG. 8 is a perspective view showing an initial shape of a plate material in the push-type L-shaped bending.
【図９】プッシュ式のＬ形折曲に於ける板材の折曲第一
段階を示す斜視図である。FIG. 9 is a perspective view showing a first stage of bending the plate material in the push-type L-shaped bending.
【図１０】プッシュ式のＬ形折曲に於ける板材の折曲第
二段階を示す斜視図である。FIG. 10 is a perspective view showing a second stage of bending the plate material in the push-type L-shaped bending.
１ パンチリテーナ ３ カウンタリテーナ １５ パンチ部材 １９ 圧縮コイルばね ２１ａ、２１ｂ 折曲片加圧面部 ２３ａ、２３ｂ 折曲片加圧面部材 ２７ カウンタホルダ ３１ 圧縮コイルばね ３３、３５ 曲げ型部 ４３ 第一パンチ部材 ４５ 圧縮コイルばね ４９ 第二パンチ部材 ５３ 圧縮コイルばね ５９、６１ 可動曲げ型 1 Punch Retainer 3 Counter Retainer 15 Punch Member 19 Compression Coil Spring 21a, 21b Bending Piece Pressing Surface 23a, 23b Bending Piece Pressing Surface Member 27 Counter Holder 31 Compression Coil Spring 33, 35 Bending Die 43 43 First Punching Member 45 Compression coil spring 49 Second punch member 53 Compression coil spring 59, 61 Movable bending die
Claims (2)
ウンタリテーナと、前記パンチリテーナに前記カウンタ
リテーナとの対向方向に所定量のみ移動可能に取り付け
られたパンチ部材と、前記カウンタリテーナに前記パン
チリテーナとの対向方向に所定量のみ移動可能に且つ前
記パンチ部材と対向して取り付けられ前記パンチ部材と
共働して板材を挟み持つカウンタホルダと、前記パンチ
部材を前記カウンタホルダの側に第一のばね力により付
勢する第一のばね部材と、前記カウンタホルダを前記パ
ンチ部材の側に前記第一のばね力より小さい第二のばね
力により付勢する第二のばね部材とを有し、前記カウン
タリテーナには前記カウンタホルダの前記第二のばね部
材のばね力に抗した前記カウンタリテーナに対する相対
移動により板材の両側に各々Ｌ形折曲を行う曲げ型部が
前記カウンタホルダの両側に各々設けられ、前記パンチ
リテーナには前記パンチ部材の前記第一のばね部材のば
ね力に抗した前記パンチリテーナに対する相対移動によ
り前記板材の両側のＬ形折曲片を各々当該Ｌ形折曲片の
延在方向に加圧する折曲片加圧面部が設けられているこ
とを特徴とする板材曲げ型装置。1. A punch retainer and a counter retainer arranged to face each other; a punch member attached to the punch retainer so as to be movable by a predetermined amount in a direction opposite to the counter retainer; and a punch retainer attached to the counter retainer. A counter holder that is movable only by a predetermined amount in the opposite direction and that is mounted so as to face the punch member and that sandwiches a plate member in cooperation with the punch member; and a first spring force that moves the punch member toward the counter holder. A second spring member for urging the counter holder toward the punch member with a second spring force smaller than the first spring force, The retainer is moved relative to the counter retainer against the spring force of the second spring member by the counter holder to move both plate members. Bending dies that perform L-shaped bending are provided on both sides of the counter holder, and the punch retainer is moved relative to the punch retainer against the spring force of the first spring member. The plate bending apparatus is characterized in that bent plate pressing surfaces for pressing the L-shaped bent pieces on both sides of the plate in the extending direction of the L-shaped bent pieces are provided.
ウンタリテーナと、前記パンチリテーナに前記カウンタ
リテーナとの対向方向に所定量のみ移動可能に取り付け
られた第一パンチ部材と、前記第一パンチ部材の先端側
に前記カウンタリテーナとの対向方向に所定量のみ移動
可能に取り付けられた第二パンチ部材と、前記カウンタ
リテーナに前記パンチリテーナとの対向方向に所定量の
み移動可能に且つ前記第二パンチ部材と対向して取り付
けられ前記第二パンチ部材と共働して板材を挟み持つカ
ウンタホルダと、前記第一パンチ部材を前記カウンタホ
ルダの側に第一のばね力により付勢する第一のばね部材
と、前記第二パンチ部材を前記カウンタホルダの側に第
一のばね力より小さい第二のばね力により付勢する第二
のばね部材と、前記カウンタホルダをパンチ部材の側に
前記第二のばね力より小さい第三のばね力により付勢す
る第三のばね部材と、前記カウンタホルダの両側に各々
回動可能に取り付けられ前記カウンタホルダの前記第三
のばね部材のばね力に抗した前記カウンタリテーナに対
する相対移動に応じて回動して板材の両側に各々第一の
Ｌ形折曲を行う可動曲げ型とを有し、前記パンチリテー
ナには前記可動曲げ型と各々協働して前記板材の両側の
前記第一のＬ形折曲による第一Ｌ形折曲片の先端側に各
々第二のＬ形折曲を行う曲げ面部が設けられ、前記第一
パンチ部材には前記第二パンチ部材の前記第二のばね部
材のばね力に抗した前記第一パンチ部材に対する相対移
動により前記第一Ｌ形折曲片を各々当該第一Ｌ形折曲片
の延在方向に加圧する折曲片加圧面部が設けられ、前記
曲げ面部は前記第一パンチ部材の前記第一のばね部材の
ばね力に抗した前記パンチリテーナに対する相対移動に
より板材の両側の前記第二のＬ形折曲による第二Ｌ形折
曲片を各々当該第二Ｌ形折曲片の板厚方向に加圧するよ
う構成されていることを特徴とする板材曲げ型装置。2. A punch retainer and a counter retainer arranged to face each other, a first punch member attached to the punch retainer so as to be movable by a predetermined amount in a direction opposite to the counter retainer, and a tip of the first punch member. A second punch member attached to a side of the counter retainer so as to be movable by a predetermined amount in a direction opposite to the counter retainer; and a second punch member movable to the counter retainer by a predetermined amount in a direction opposite to the punch retainer. A counter holder which is attached to face each other and holds a plate member in cooperation with the second punch member; and a first spring member which biases the first punch member toward the counter holder by a first spring force. A second spring member for urging the second punch member toward the counter holder by a second spring force smaller than a first spring force; A third spring member for urging the counter holder toward the punch member by a third spring force smaller than the second spring force, and rotatably mounted on both sides of the counter holder, respectively. The punch retainer includes a movable bending die that rotates in response to a relative movement of the third spring member against the spring force with respect to the counter retainer to perform the first L-shaped bend on each side of the plate member. Is provided with a bending surface portion for performing a second L-shaped bending on each tip side of the first L-shaped bending pieces by the first L-shaped bending on both sides of the plate member in cooperation with the movable bending die. The first L-shaped bent pieces are respectively attached to the first punch member by relative movement of the second punch member with respect to the first punch member against the spring force of the second spring member. Bending piece pressing surface that presses in the extending direction of the bending piece The bending surface portion is provided with a second L-shaped fold by the second L-shaped bending on both sides of the plate member by relative movement of the first punch member with respect to the punch retainer against the spring force of the first spring member. A plate bending apparatus, wherein each bending piece is configured to be pressed in the plate thickness direction of the second L-shaped bending piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17252792A JP3300036B2 (en) | 1992-06-30 | 1992-06-30 | Plate bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17252792A JP3300036B2 (en) | 1992-06-30 | 1992-06-30 | Plate bending machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0615364A true JPH0615364A (en) | 1994-01-25 |
| JP3300036B2 JP3300036B2 (en) | 2002-07-08 |
Family
ID=15943582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17252792A Expired - Fee Related JP3300036B2 (en) | 1992-06-30 | 1992-06-30 | Plate bending machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3300036B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007015569A (en) * | 2005-07-08 | 2007-01-25 | Nakahara:Kk | Filter member |
| CN104475582A (en) * | 2014-12-18 | 2015-04-01 | 安徽力源数控刃模具制造有限公司 | Bending lower die for bending machine and manufacturing method for bending lower die |
| CN114346020A (en) * | 2022-01-17 | 2022-04-15 | 广州铮高精密机械有限公司 | Short circuit ring bending tool and method for shaded pole motor |
-
1992
- 1992-06-30 JP JP17252792A patent/JP3300036B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007015569A (en) * | 2005-07-08 | 2007-01-25 | Nakahara:Kk | Filter member |
| JP4642575B2 (en) * | 2005-07-08 | 2011-03-02 | 株式会社ナカハラ | Filter member |
| CN104475582A (en) * | 2014-12-18 | 2015-04-01 | 安徽力源数控刃模具制造有限公司 | Bending lower die for bending machine and manufacturing method for bending lower die |
| CN114346020A (en) * | 2022-01-17 | 2022-04-15 | 广州铮高精密机械有限公司 | Short circuit ring bending tool and method for shaded pole motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3300036B2 (en) | 2002-07-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |