JPS62179819A - Plate bending device - Google Patents

Abstract

PURPOSE:To perform the bending of a plate stock with less necessary power and stroke by moving the inner and outer dies relatively in the approaching and separating directions by pushing up the plate stock for the inner die by placing it on the rocker arm like outer die couple fitted to the sliding base of the above of a base stand. CONSTITUTION:A rocker arm like outer die 1 is fitted in a opposite couple on the sliding base 4 movably arranged in the right and left directions on a base stand 8. The plate stock 3 in the prescribed width size is placed on this outer die 1. The plate stock 3 is bent by moving the inner and outer dies 1, 4 relatively in the approaching and separating directions by pushing up the outer die 1 with a cylinder 7 for the upper part inner die 4. The plate stock 3 becomes in the prescribed box shape approximately by performing similar operation by changing to a smaller width inner die 4. The power and stroke are managed less by this rocker arm mechanism and the productivity is improved with a simple mechanism and actuation.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は例えば角形鋼管の成形加工等に利用する板曲げ
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plate bending device used for forming, for example, square steel pipes.

〔従来技術とその問題点〕[Prior art and its problems]

従来の大形厚肉角形鋼管の製造方法として、切板材を使
用し、４隅を４工程でプレス成形し、その後１シーム溶
接する製造方法があった。A conventional manufacturing method for large, thick-walled rectangular steel pipes involves using cut plates, press-forming the four corners in four steps, and then welding one seam.

この方法ではプレス機にて４隅を曲げ成形するため、曲
げ工程が複雑で、板材のハンドリングに時間がかかり生
産能力が低く、４辺の曲げ精度にもバラツキがあった。In this method, the four corners are bent using a press, so the bending process is complicated, the handling of the plate material takes time, the production capacity is low, and the bending accuracy on the four sides also varies.

又固定外金型を使用しているため、成形時にコーナー付
近でキズが発生し、後工程で手直しする場合があった。Furthermore, since a fixed external mold was used, scratches occurred near the corners during molding, which sometimes required rework in subsequent processes.

本発明は、前記の如き問題点を解決し、主として曲げ成
形時の板材ハンドリング及びプレス時間の短縮と、成形
時のキズ発生を防止し大形厚肉角形鋼管の生産能力向上
を目的とした新しい成形法である。The present invention solves the above-mentioned problems, and is a new method mainly aimed at shortening the handling and pressing time of sheet materials during bending, preventing scratches during forming, and improving the production capacity of large, thick-walled rectangular steel pipes. It is a molding method.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は基台８にロッカーアーム状に形成した外型１全
回動可能に軸設し、この外型１に相対向させ、内型２を
配設し、これら内および外型を相対的に接離方向へ移動
可能にしてなることを特徴とする板曲げ装置を提供する
ものである０ 〔作　　用〕 相対設した外型と内型の間に被加工材料を送り込み内型
、外型をどちらか一方あるいは両者を相対的に動かし接
近させ、ロッカーアーム状に形成した外型１の回動力に
より被加工材料を曲げ加工することができ、例えば角形
鋼管の成形が容易に可能となる。In the present invention, an outer mold 1 formed in the shape of a rocker arm is mounted on a base 8 so as to be fully rotatable, an inner mold 2 is arranged facing the outer mold 1, and these inner and outer molds are arranged relative to each other. [Function] A workpiece material is fed between an outer die and an inner die that are placed opposite each other, and the inner die and the outer die are moved. By moving one or both of them relatively to each other, the material to be processed can be bent by the rotational force of the outer die 1 formed in the shape of a rocker arm. For example, it becomes possible to easily form a square steel pipe.

本発明はロッカーアーム式の外型の開発により大きなプ
レス力が得られ、プレスストロークの減少、曲げ工程の
簡素化ができる。By developing a rocker arm type outer mold, the present invention can obtain a large pressing force, reduce the press stroke, and simplify the bending process.

〔実施例〕〔Example〕

第１図、第２図によって本発明の一実施例を説明する。 An embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

図中１はロッカーアーム状に形成、した外型、２は内型
を示している。而して本例において内型２は固定的に設
置されており、ロッカーアーム状に形成された外型１は
基台８に水平移動自在に配置された摺動台４に回動可能
に軸設される。基台８は昇降台５を介し流体圧シリンダ
７に連設されている。摺動台４は被加工材料よシ角形鋼
管を作る場合、製品の大きさを変更するためのもので、
又本例ではロッカーアーム状の外型１をシリンダ７で昇
降させる機構としているが、内型２の方を昇降させても
よく、又外、内型１．２の両者を動かすことも可能であ
り、要は相対的な動きによりプレスできればよい。In the figure, 1 shows an outer mold formed into a rocker arm shape, and 2 shows an inner mold. In this example, the inner mold 2 is fixedly installed, and the outer mold 1 formed in the shape of a rocker arm is rotatably mounted on a sliding base 4 that is horizontally movable on a base 8. will be established. The base 8 is connected to the fluid pressure cylinder 7 via the lifting table 5. The sliding table 4 is used to change the size of the product when making square steel pipes from the workpiece material.
Further, in this example, the mechanism is such that the rocker arm-shaped outer mold 1 is raised and lowered by the cylinder 7, but the inner mold 2 may be raised and lowered, and it is also possible to move both the outer mold and the inner mold 1.2. Yes, the key is to be able to press using relative movement.

而して本実施例では第１図、第２図に示すように第１図
を上辺曲げを行なう第１工程のＰｔ１ｔとし、第２図を
下辺曲げの第２工程として角形鋼管の成形を例示してい
る。In this embodiment, as shown in FIGS. 1 and 2, FIG. 1 is Pt1t in the first step of bending the upper side, and FIG. 2 is the second step of bending the lower side, illustrating the forming of a square steel pipe. are doing.

本発明はロッカーアーム状の外型１と内型２の間に被加
工材料３を送り込み、流体圧シリンダ７の作動により昇
降台５、基台８および摺動台４を昇降させ、摺動台４に
軸設した外型１の回動と保持台６により被加工材料３を
曲げ角形鋼管に成形することができる。In the present invention, a workpiece material 3 is fed between a rocker arm-shaped outer mold 1 and an inner mold 2, and a lifting table 5, a base 8, and a sliding table 4 are raised and lowered by the operation of a fluid pressure cylinder 7, and the sliding table is moved up and down. The material to be processed 3 can be bent into a rectangular steel tube by the rotation of the outer mold 1 and the holding table 6, which are mounted on a shaft at 4.

〔発明の効果〕〔Effect of the invention〕

本発明は角形鋼管の成形においてロッカーアーム方式を
実施することにより大きなプレス力が得られ、プレスス
トロークの減少、曲げ工程の簡素化と、大形厚肉角形鋼
管の成形において特に生産性および生産能力の向上に効
果がある。The present invention achieves a large pressing force by implementing the rocker arm method in forming square steel pipes, reduces press stroke, simplifies the bending process, and improves productivity and production capacity, especially in forming large thick-walled square steel pipes. It is effective in improving

又本発明においては板状物から曲げを必要とする装置と
しても広〈実施できる。Further, the present invention can be widely implemented as a device that requires bending a plate-shaped object.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の実施例装置を示すものであり、第１０図
は上辺曲げを実施する装置の正面図、第２図は下辺曲げ
を実施する装置の正面図である。The drawings show an apparatus according to an embodiment of the present invention, and FIG. 10 is a front view of the apparatus for bending the upper side, and FIG. 2 is a front view of the apparatus for bending the lower side.

Claims (1)

【特許請求の範囲】[Claims] 基台にロッカーアーム状に形成した外型を回動可能に軸
設し、該外型に相対向させ内型を配設し、これら内、外
型を相対的に接離方向へ移動可能にしてなることを特徴
とする板曲げ装置。An outer mold formed in the shape of a rocker arm is rotatably mounted on a base, an inner mold is arranged opposite to the outer mold, and these inner and outer molds are movable relative to each other in directions of approaching and separating. A plate bending device that is characterized by the ability to bend.