JP4981081B2 - Bending roll device - Google Patents

Bending roll device Download PDF

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JP4981081B2
JP4981081B2 JP2009057643A JP2009057643A JP4981081B2 JP 4981081 B2 JP4981081 B2 JP 4981081B2 JP 2009057643 A JP2009057643 A JP 2009057643A JP 2009057643 A JP2009057643 A JP 2009057643A JP 4981081 B2 JP4981081 B2 JP 4981081B2
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metal plate
roll
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bending
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JP2010207873A (en
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勝利 坪田
匡丞 森永
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Kurimoto Ltd
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本発明は、金属板を平行な上下の作業ロール間で長さ方向に往復させ、金属板の長さ方向に所要の曲げ曲率を付与するベンディングロール装置に関する。   The present invention relates to a bending roll device that reciprocates a metal plate in the length direction between parallel upper and lower work rolls to give a required bending curvature in the length direction of the metal plate.

所定の長さの金属板を、少なくとも一方が正逆回転駆動される上下の作業ロール間を長さ方向に往復パスさせ、金属板の下面を、上下の作業ロールとパス方向で離間する少なくとも１本の支持ロールで、曲げモーメントを負荷するように支持して、金属板の長さ方向に所要の曲げ曲率を付与するベンディングロール装置には、下作業ロールを上作業ロールの直下に配置し、これらの上下の作業ロールの両側に離間させて、金属板に曲げモーメントを負荷するように下面を支持する一対の支持ロールを平行に配置した４本ロール形式のものと（例えば、特許文献１参照）、往復パスする金属板の下側に、上作業ロールの両側に離間させて、一対の下ロールを平行に配置し、これらの一対の下ロールのうち、往復パスする金属板の進行方向に対して、進行方向手前側の下ロールを作業ロール、進行方向奥側の下ロールを支持ロールとして、金属板の往パスと復パスとで一対の下ロールを使い分けるようにした３本ロール形式のものとがある（例えば、特許文献２、３参照）。特許文献２に記載された３本ロール形式のものでは、上作業ロールをパス方向に移動可能とし、金属板の進行方向が変わるパス毎に、上作業ロールを作業ロールとなる下ロール側へ近づけるようにしている。   A metal plate having a predetermined length is reciprocated in a length direction between upper and lower work rolls, at least one of which is driven to rotate forward and backward, and the lower surface of the metal plate is separated from the upper and lower work rolls in the pass direction. In the bending roll device that supports the bending moment with the support roll of the book and gives the required bending curvature in the length direction of the metal plate, the lower work roll is arranged directly below the upper work roll, A four-roll type with a pair of support rolls arranged in parallel so as to be spaced apart on both sides of these upper and lower work rolls and to support the lower surface so as to apply a bending moment to the metal plate (see, for example, Patent Document 1) ), A pair of lower rolls are arranged in parallel on the lower side of the reciprocating metal plate, spaced apart on both sides of the upper work roll, and the metal plate that reciprocally passes among these pair of lower rolls Against The lower roll on the front side in the traveling direction is the work roll, the lower roll on the rear side in the traveling direction is the support roll, and a pair of lower rolls are used separately for the forward pass and the return pass of the metal plate. (For example, refer to Patent Documents 2 and 3). In the three-roll type described in Patent Document 2, the upper work roll can be moved in the pass direction, and the upper work roll is brought closer to the lower roll side serving as the work roll for each pass in which the traveling direction of the metal plate changes. I am doing so.

これらのベンディングロール装置では、往復パスする金属板の終端まで所要の曲げ曲率を付与するために、パス毎に金属板の終端まで上下の作業ロール間に送り込んでから、金属板の進行方向を反転させるようにしている。このとき、金属板の終端が上下の作業ロール間から外れると、加工中の金属板が下作業ロールと支持ロールとの間に落ち込み、スムーズな反転操作ができなくなるため、従来は、作業者が金属板の終端を監視しながら、寸動操作で金属板を終端まで送り込むようにしている。このため、生産効率が著しく低下する問題がある。   In these bending roll devices, in order to give the required bending curvature to the end of the metal plate that passes reciprocally, it is fed between the upper and lower work rolls to the end of the metal plate for each pass, and then the traveling direction of the metal plate is reversed. I try to let them. At this time, if the end of the metal plate is disengaged between the upper and lower work rolls, the metal plate being processed falls between the lower work roll and the support roll, and a smooth reversing operation cannot be performed. While monitoring the end of the metal plate, the metal plate is fed to the end by an inching operation. For this reason, there is a problem that the production efficiency is remarkably lowered.

このような問題をなくして、金属板の反転位置を自動的に位置決めできるように、パス毎の金属板の終端を検知する手段が提案されている。特許文献１に記載された４本ロール形式のものでは、下作業ロールと各支持ロールの間に、それぞれ金属板の下面と当接して従動回転する入側計測ロールと出側計測ロールを配置し、これらの計測ロールに、金属板の送り量に応じたパルスを発生する回転パルス発生手段を設けて、この回転パルス発生手段の出力によって、各パスでの金属板の先端から後端までの送り量を連続的に計測し、金属板の終端を検知するようにしている。また、特許文献３に記載された３本ロール形式のものでは、一対の下ロールの送り時間を計時する送りタイマを設け、各パスで計時される下ロールの送り時間によって、金属板の終端を検知するようにしている。   Means for detecting the end of the metal plate for each pass have been proposed so that the reverse position of the metal plate can be automatically positioned without such a problem. In the four-roll type described in Patent Document 1, an inlet-side measuring roll and an outlet-side measuring roll that are driven to rotate in contact with the lower surface of the metal plate are arranged between the lower work roll and each support roll, respectively. These measurement rolls are provided with rotation pulse generating means for generating a pulse corresponding to the feed amount of the metal plate, and the feed from the front end to the rear end of the metal plate in each pass is determined by the output of the rotation pulse generating means. The amount is continuously measured to detect the end of the metal plate. In addition, in the three-roll type described in Patent Document 3, a feed timer for measuring the feed time of a pair of lower rolls is provided, and the end of the metal plate is determined by the feed time of the lower roll measured in each pass. I try to detect it.

特開平７−１８５６７１号公報JP-A-7-185671 特開昭６１−２２９４２４号公報JP-A 61-229424 特開２０００−２８８６３６号公報JP 2000-288636 A

特許文献１に記載されたように、金属板の下面と当接する計測ロールの回転パルスによって、金属板の先端から後端までの送り量を連続的に計測し、金属板の終端を間接的に検知する方法は、金属板の下面と当接して従動回転する計測ロールがスリップする恐れがあるとともに、上向の曲げ曲率を付与される金属板の下面に伸びが生じること、および計測ロールが磨耗して直径寸法が変化することから、計測される金属板の送り量に誤差が生じ、金属板の終端を精度よく検知できない問題がある。   As described in Patent Document 1, the feed amount from the front end to the rear end of the metal plate is continuously measured by the rotation pulse of the measurement roll that contacts the lower surface of the metal plate, and the end of the metal plate is indirectly measured. The detection method is that the measurement roll that rotates following contact with the lower surface of the metal plate may slip, the lower surface of the metal plate is given an upward bending curvature, and the measurement roll is worn. Since the diameter dimension changes, an error occurs in the measured feed amount of the metal plate, and there is a problem that the end of the metal plate cannot be detected with high accuracy.

また、特許文献３に記載されたように、下ロールの送り時間を計時する送りタイマを設けて、計時される下ロールの送り時間によって、金属板の終端を間接的に検知する方法は、送り時間を計時する下ロールを作業ロール側とすれば、金属板の下面とスリップする恐れはあまりないが、やはり、上向の曲げ曲率を付与される金属板の下面に伸びが生じることから、計時される送り時間に誤差が生じ、金属板の終端を精度よく検知できない問題がある。   Further, as described in Patent Document 3, a method is provided in which a feed timer for measuring the feed time of the lower roll is provided, and the end of the metal plate is indirectly detected based on the feed time of the lower roll measured. If the lower roll that measures time is on the work roll side, there is not much risk of slipping with the lower surface of the metal plate, but there will still be elongation on the lower surface of the metal plate that is given an upward bending curvature. There is a problem that an error occurs in the feed time and the end of the metal plate cannot be detected with high accuracy.

このような問題に対処するためには、金属板の終端をセンサで直接検出することが考えられるが、ベンディングロール装置では、曲げ加工の進行に伴って、上下の作業ロール間を往復パスする金属板の終端の移動軌跡がパス毎に異なることになるので、金属板の終端を検出するセンサを、パス毎の移動軌跡に応じて移動させるか、複数のセンサを配設する必要がある。また、曲げ加工される金属板の長さ寸法や曲げ曲率も各種異なるので、このようなセンサを配設する構成は、複雑で高価なものとなる。さらに、センサを、金属板の幅方向の内側で、金属板に接触させる接触式センサとしたり、金属板に近接させる非接触式センサとする場合は、金属板の移動軌跡のずれによって、これらのセンサを損傷する危険もある。   In order to deal with such problems, it is conceivable to detect the end of the metal plate directly with a sensor. However, in the bending roll apparatus, the metal that reciprocates between the upper and lower work rolls as the bending process proceeds. Since the movement trajectory at the end of the plate is different for each path, it is necessary to move a sensor for detecting the end of the metal plate according to the movement trajectory for each path or to provide a plurality of sensors. Moreover, since the length dimension and bending curvature of the metal plate to be bent are variously different, the configuration in which such a sensor is disposed is complicated and expensive. Furthermore, when the sensor is a contact type sensor that contacts the metal plate inside the width direction of the metal plate or a non-contact type sensor that approaches the metal plate, the displacement of the movement trajectory of the metal plate causes these There is also a risk of damaging the sensor.

そこで、本発明の課題は、簡単な構成で安全にパス毎の金属板の終端を直接検出し、金属板の反転位置を自動的に精度よく位置決めできるようにすることである。   Therefore, an object of the present invention is to directly detect the end of the metal plate for each path safely with a simple configuration, and to automatically and accurately position the reverse position of the metal plate.

上記の課題を解決するために、本発明は、所定の長さの金属板を、少なくとも一方が正逆回転駆動される上下の作業ロール間を、幅方向と直角方向の長さ方向に往復パスさせ、前記金属板の下面を、前記上下の作業ロールとパス方向で離間する少なくとも１本の支持ロールで、曲げモーメントを負荷するように支持して、前記金属板の長さ方向に所要の曲げ曲率を付与するベンディングロール装置において、前記往復パスする金属板の終端を検出する非接触式センサを、前記上下の作業ロール間への入口近傍で、前記金属板の幅方向の外側に配設した構成を採用した。   In order to solve the above-described problems, the present invention provides a reciprocating path in a length direction perpendicular to the width direction between upper and lower work rolls, at least one of which is driven to rotate forward and reverse, with a metal plate having a predetermined length. The lower surface of the metal plate is supported by at least one support roll spaced apart from the upper and lower work rolls in the pass direction so as to apply a bending moment, and the required bending in the length direction of the metal plate is performed. In a bending roll device that imparts curvature, a non-contact sensor that detects the end of the metal plate that reciprocally passes is disposed outside the metal plate in the width direction in the vicinity of the entrance between the upper and lower work rolls. Adopted the configuration.

すなわち、往復パスする金属板の終端を検出する非接触式センサを、上下の作業ロール間への入口近傍で、金属板の幅方向の外側に配設することにより、簡単な構成で安全にパス毎の金属板の終端を直接検出し、金属板の反転位置を自動的に精度よく位置決めできるようにした。   In other words, a non-contact sensor that detects the end of a reciprocating metal plate is disposed near the entrance between the upper and lower work rolls outside the metal plate in the width direction, so that it can be safely passed with a simple configuration. The end of each metal plate is directly detected, and the reverse position of the metal plate can be automatically and accurately positioned.

前記非接触式センサは、固体を透過しない光波、電波または音波のいずれかの波動を発信する発信端子と、この波動を受信する受信端子とを前記金属板の幅方向の外側に配設し、前記発信端子から前記金属板へ幅方向に上下斜めに前記波動を発信し、前記受信端子で前記波動を受信したときに、前記金属板の終端を検知するものとすることができる。   The non-contact sensor is provided with a transmitting terminal that transmits a wave of light waves, radio waves, or sound waves that do not pass through a solid, and a receiving terminal that receives the wave, outside the width direction of the metal plate, The wave may be transmitted from the transmitting terminal to the metal plate obliquely in the vertical direction in the width direction, and the end of the metal plate may be detected when the wave is received by the receiving terminal.

前記発信端子と受信端子を、前記金属板の幅方向の同一側に配設し、金属板の幅方向の反対側の外側に、前記発信端子から発信される波動を、前記受信端子に向けて反射する反射板を設けることにより、発信端子と受信端子への電源線や信号線を短くして配線を簡単に行うことができる。   The transmission terminal and the reception terminal are arranged on the same side in the width direction of the metal plate, and the wave transmitted from the transmission terminal is directed to the reception terminal on the outer side opposite to the width direction of the metal plate. By providing the reflecting plate to reflect, the power supply line and the signal line to the transmission terminal and the reception terminal can be shortened and wiring can be easily performed.

前記波動は、指向性が高く、長距離でも減衰しないレーザ光が好適である。   The wave is preferably a laser beam having high directivity and not attenuated over a long distance.

前記上下の作業ロールの少なくとも一方に、回転パルスを発生するパルスエンコーダを取り付け、このパルスエンコーダの出力に基づいて、前記金属板の先端からの送り長さを演算し、演算された送り長さが、前記非接触式センサで金属板の終端が検出されるよりも前の所定の長さとなったときに、前記金属板の送り速度を減速することにより、非接触式センサで金属板の終端を検出したときに、金属板の反転位置をより精度よく位置決めすることができる。   A pulse encoder that generates a rotation pulse is attached to at least one of the upper and lower work rolls, and a feed length from the tip of the metal plate is calculated based on the output of the pulse encoder. When the end of the metal plate reaches a predetermined length before the end of the metal plate is detected by the non-contact sensor, the end of the metal plate is detected by the non-contact sensor by decelerating the feed speed of the metal plate. When detected, the reverse position of the metal plate can be positioned more accurately.

前記ベンディングロール装置は、前記往復パスする金属板の上側に１本の上作業ロールを配置し、金属板の下側に、前記上作業ロールの両側に離間させて、一対の下ロールを平行に配置し、これらの一対の下ロールのうち、前記往復パスする金属板の進行方向に対して、進行方向手前側の下ロールを前記作業ロール、進行方向奥側の下ロールを前記支持ロールとして、往パスと復パスとで一対の下ロールを使い分けるようにした３本ロール形式のものとすることができる。   In the bending roll device, a single upper work roll is disposed above the reciprocating metal plate, and is separated from both sides of the upper work roll on the lower side of the metal plate so that a pair of lower rolls are parallel to each other. Arranged, among these pair of lower rolls, with respect to the traveling direction of the metal plate that reciprocally passes, the lower roll on the front side in the traveling direction is the work roll, and the lower roll on the rear side in the traveling direction is the support roll, A three-roll type can be used in which a pair of lower rolls are selectively used for the forward path and the backward path.

本発明のベンディングロール装置は、往復パスする金属板の終端を検出する非接触式センサを、上下の作業ロール間への入口近傍で、金属板の幅方向の外側に配設したので、簡単な構成で安全にパス毎の金属板の終端を直接検出し、金属板の反転位置を自動的に精度よく位置決めすることができる。   In the bending roll device of the present invention, the non-contact type sensor for detecting the end of the metal plate that reciprocally passes is disposed outside the metal plate in the width direction in the vicinity of the entrance between the upper and lower work rolls. With the configuration, the end of the metal plate for each path can be detected directly and the reversing position of the metal plate can be automatically and accurately positioned.

ベンディングロール装置の実施形態を示す側面図Side view showing an embodiment of a bending roll apparatus 図１のII−II線の矢視方向の正面図Front view of arrow II-II direction in FIG.

以下、図面に基づき、本発明の実施形態を説明する。このベンディングロール装置は、図１に示すように、往復パスする所定の長さの金属板Ａの上側に上作業ロール１を配置し、金属板Ａの下側に、上作業ロール１の両側に離間させて、一対の下ロール２ａ、２ｂを平行に配置し、これらの一対の下ロール２ａ、２ｂのうち、金属板Ａの進行方向に対して、進行方向手前側の下ロール２ａを作業ロール、進行方向奥側の下ロール２ｂを、金属板Ａの下面を曲げモーメントを付加するように支持する支持ロールとして、往パスと復パスとで一対の下ロール２ａ、２ｂを使い分けるようにして、金属板Ａの長さ方向に所要の曲げ曲率を付与する３本ロール形式のものである。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this bending roll apparatus, as shown in FIG. 1, an upper work roll 1 is disposed on the upper side of a metal plate A having a predetermined length that makes a reciprocating pass, and on the lower side of the metal plate A, on both sides of the upper work roll 1. A pair of lower rolls 2a, 2b are arranged in parallel with each other, and among these pair of lower rolls 2a, 2b, the lower roll 2a on the front side in the traveling direction with respect to the traveling direction of the metal plate A is a work roll. As the support roll for supporting the lower roll 2b on the rear side in the traveling direction so as to add a bending moment to the lower surface of the metal plate A, the pair of lower rolls 2a and 2b are selectively used in the forward pass and the return pass, This is a three-roll type that gives a required bending curvature in the length direction of the metal plate A.

前記上作業ロール１は、上下方向とパス方向に移動可能とされ、パスの進行に伴う金属板Ａの曲げ曲率の増加に伴って下方へ移動されるとともに、往パスと復パスとで作業ロールとなる下ロール２ａ、２ｂ側へ近づけるように、パス方向に移動される。   The upper work roll 1 is movable in the vertical direction and the pass direction, and is moved downward as the bending curvature of the metal plate A increases with the progress of the pass. Is moved in the path direction so as to approach the lower rolls 2a and 2b.

前記一対の下ロール２ａ、２ｂは、往パスと復パスとに応じて正逆方向に回転駆動される。図１は、金属板Ａが右方へ進行する往パスの状態を示し、上作業ロール１は作業ロールとなる左側の下ロール２ａに近づけられ、一対の下ロール２ａ、２ｂは、時計回りの正転方向に回転駆動されている。図示は省略するが、復パスのときは、上作業ロール１が右側の下ロール２ｂに近づけられ、一対の下ロール２ａ、２ｂは、反時計回りの逆転方向に回転駆動される。   The pair of lower rolls 2a and 2b are rotationally driven in forward and reverse directions according to the forward path and the backward path. FIG. 1 shows a state of a forward path in which the metal plate A travels to the right. The upper work roll 1 is brought close to the left lower roll 2a serving as the work roll, and the pair of lower rolls 2a and 2b are rotated clockwise. It is driven to rotate in the forward direction. Although illustration is omitted, during the reverse pass, the upper work roll 1 is brought closer to the lower roll 2b on the right side, and the pair of lower rolls 2a, 2b are rotationally driven in the counterclockwise reverse direction.

前記一対の下ロール２ａ、２ｂには、回転パルスを発生するパルスエンコーダ３が取り付けられており、各パルスエンコーダ３の出力はコントローラ４に入力され、各パスでの金属板Ａの先端からの送り長さＬが演算されるようになっている。コントローラ４には、曲げ加工される金属板Ａの長さ寸法Ｌ０が予め記憶されており、演算された金属板Ａの送り長さＬが、長さ寸法Ｌ０の９０〜９５％を越えると、後述する非接触式センサ６で金属板Ａの終端が検出される前に、下ロール２ａ、２ｂの回転速度を減速する。なお、金属板Ａの長さ寸法Ｌ０は、曲げ加工の進行に伴って少し変化するが、これと比較される演算された金属板Ａの送り長さは、金属板Ａの終端が検出される前に余裕を持って減速タイミングを決めるためのものであるので、この長さ寸法Ｌ０の変化は問題とならない。 The pair of lower rolls 2a and 2b is provided with a pulse encoder 3 for generating a rotation pulse. The output of each pulse encoder 3 is input to the controller 4 and fed from the front end of the metal plate A in each pass. The length L is calculated. The controller 4 stores in advance the length dimension L 0 of the metal plate A to be bent, and the calculated feed length L of the metal sheet A exceeds 90 to 95% of the length dimension L 0. And the rotational speed of the lower rolls 2a and 2b is decelerated before the end of the metal plate A is detected by the non-contact sensor 6 described later. Incidentally, the length L 0 of the metal plate A is slightly varied with the progress of bending, the feed length of the computed metal plate A is compared with this, it is detected the end of the metal plate A since it is intended to determine the deceleration timing with a margin before that, the change in the length dimension L 0 is not a problem.

また、このベンディングロール装置は、上作業ロール１の入口側と出口側で起伏可能とされ、曲げ曲率を付与された金属板Ａの外側面をローラ５ａで支持する成品支持装置５も設けられている。図１では、右側の成品支持装置５が起立されて、出口側で金属板Ａの外側面を支持している。曲げ曲率が大きくなったときは、両方の成品支持装置５を起立させて、金属板Ａの外側面を入口側と出口側の両側で支持することもある。なお、成品支持装置５は、金属板Ａの内側面を支持するものとすることもできる。   The bending roll device is also provided with a product support device 5 which can be raised and lowered on the inlet side and the outlet side of the upper work roll 1 and supports the outer surface of the metal plate A to which the bending curvature is given by a roller 5a. Yes. In FIG. 1, the product support device 5 on the right side is erected to support the outer surface of the metal plate A on the outlet side. When the bending curvature increases, both product support devices 5 may be erected to support the outer surface of the metal plate A on both the inlet side and the outlet side. In addition, the product support apparatus 5 can also support the inner surface of the metal plate A.

図１および図２に示すように、前記一対の下ロール２ａ、２ｂの外側近傍には、上作業ロール１と作業ロールとなる下ロール２ａ、２ｂ間への入口近傍で、往復パスする金属板Ａの終端を検出する非接触式センサ６が、金属板Ａの幅方向の外側に配設されている。この非接触式センサ６は、金属板Ａの幅方向の外側の同一側に配設され、レーザ光Ｂを発信する発信端子６ａおよびレーザ光Ｂを受信する受信端子６ｂと、これらと反対側の幅方向の外側に配設され、発信端子６ａから発信されたレーザ光Ｂを受信端子６ｂに向けて反射させる反射板６ｃとからなる。   As shown in FIGS. 1 and 2, in the vicinity of the outside of the pair of lower rolls 2a and 2b, a metal plate that makes a reciprocating pass near the entrance between the upper work roll 1 and the lower rolls 2a and 2b to be work rolls. A non-contact sensor 6 that detects the end of A is disposed outside the metal plate A in the width direction. This non-contact type sensor 6 is disposed on the same outer side in the width direction of the metal plate A, and has a transmitting terminal 6a for transmitting the laser beam B and a receiving terminal 6b for receiving the laser beam B, and the opposite side thereof. The reflector 6c is disposed outside in the width direction and reflects the laser beam B transmitted from the transmitting terminal 6a toward the receiving terminal 6b.

前記発信端子６ａと受信端子６ｂは、金属板Ａの幅方向に斜め下向きに反射板６ｃへ向けて、同じ取り付け部材７ａに互いに近接させて取り付けられ、取り付け部材７ｂに取り付けられた反射板６ｃは、レーザ光Ｂの反射角を見込んで、金属板Ａの幅方向に斜め上向きに発信端子６ａと受信端子６ｂへ向けられている。したがって、発信端子６ａから発信されたレーザ光Ｂが受信端子６ｂで受信されたときに、金属板Ａの終端が検知される。受信端子６ｂは前記コントローラ４に接続され、コントローラ４は受信端子６ｂの検出出力が入力されたときに、減速していた各下ロール２ａ、２ｂの回転を停止し、こののち、金属板Ａの進行方向を反転させるように、各下ロール２ａ、２ｂを逆転駆動する。   The transmission terminal 6a and the reception terminal 6b are attached to the same attachment member 7a so as to face the reflection plate 6c obliquely downward in the width direction of the metal plate A, and the reflection plate 6c attached to the attachment member 7b is In view of the reflection angle of the laser beam B, the metal plate A is directed obliquely upward in the width direction of the metal plate A toward the transmission terminal 6a and the reception terminal 6b. Therefore, when the laser beam B transmitted from the transmitting terminal 6a is received by the receiving terminal 6b, the end of the metal plate A is detected. The receiving terminal 6b is connected to the controller 4, and the controller 4 stops the rotation of the lower rolls 2a and 2b that have been decelerated when the detection output of the receiving terminal 6b is input. The lower rolls 2a and 2b are driven in reverse so as to reverse the traveling direction.

上述した実施形態では、１本の上作業ロールと一対の下ロールを備えた３本ロール形式のものとしたが、本発明に係るベンディングロール装置は、上下の作業ロールの両側に、金属板の下面を支持する一対の支持ロールを配置した４本ロール形式のものにも採用することができる。   In the above-described embodiment, a three-roll type including one upper work roll and a pair of lower rolls is used. However, the bending roll device according to the present invention has metal plates on both sides of the upper and lower work rolls. The present invention can also be applied to a four-roll type in which a pair of support rolls that support the lower surface is disposed.

Ａ 金属板
Ｂ レーザ光
１ 上作業ロール
２ａ、２ｂ 下ロール
３ パルスエンコーダ
４ コントローラ
５ 成品支持装置
５ａ ローラ
６ 非接触式センサ
６ａ 発信端子
６ｂ 受信端子
６ｃ 反射板
７ａ、７ｂ 取り付け部材 A Metal plate B Laser light 1 Upper work roll 2a, 2b Lower roll 3 Pulse encoder 4 Controller 5 Product support device 5a Roller 6 Non-contact type sensor 6a Transmission terminal 6b Reception terminal 6c Reflection plates 7a, 7b Mounting member

Claims (2)

所定の長さの金属板を、少なくとも一方が正逆回転駆動される上下の作業ロール間を、幅方向と直角方向の長さ方向に往復パスさせ、前記金属板の下面を、前記上下の作業ロールとパス方向で離間する少なくとも１本の支持ロールで、曲げモーメントを負荷するように支持して、前記金属板の長さ方向に所要の曲げ曲率を付与するベンディングロール装置において、
前記往復パスする金属板の往パス時の終端と復パス時の終端をパス毎に検出する非接触式センサを、往パス時の前記上下の作業ロール間への入口近傍と復パス時の前記上下の作業ロール間への入口近傍で、前記金属板の幅方向の外側に配設し、前記上作業ロールの出口側で金属板の外側面をローラで支持する成品支持装置を設け、
前記非接触式センサを、固体を透過しない光波、電波または音波のいずれかの波動を発信する発信端子と、この波動を受信する受信端子とを前記金属板の幅方向の外側に配設し、前記発信端子から前記金属板へ幅方向に上下斜めに前記波動を発信し、前記受信端子で前記波動を受信したときに、前記金属板の終端を検知するものとし、
前記上下の作業ロールの少なくとも一方に、回転パルスを発生するパルスエンコーダを取り付け、このパルスエンコーダの出力に基づいて、前記金属板の先端からの送り長さを演算し、演算された送り長さが、前記非接触式センサで金属板の終端が検出されるよりも前の所定の長さとなったときに、前記金属板の送り速度を減速するようにしたことを特徴とするベンディングロール装置。 A metal plate having a predetermined length is reciprocated between upper and lower work rolls, at least one of which is driven to rotate forward and backward, in a length direction perpendicular to the width direction, and the lower surface of the metal plate is moved to the upper and lower work rolls. In a bending roll apparatus that supports a bending moment by applying at least one support roll spaced apart from the roll in the pass direction to give a required bending curvature in the length direction of the metal plate,
A non-contact type sensor that detects the end of the reciprocating metal plate at the time of the forward pass and the end of the return pass for each pass , the vicinity of the entrance between the upper and lower work rolls at the time of the forward pass and the above-mentioned at the time of the return pass In the vicinity of the entrance between the upper and lower work rolls , disposed on the outside in the width direction of the metal plate, and provided with a product support device that supports the outer surface of the metal plate with a roller on the outlet side of the upper work roll,
The non-contact type sensor is disposed on the outside in the width direction of the metal plate with a transmitting terminal that transmits a wave of light waves, radio waves, or sound waves that do not pass through a solid, and a receiving terminal that receives the wave, The wave is transmitted from the transmitting terminal to the metal plate obliquely in the width direction, and when the wave is received by the receiving terminal, the end of the metal plate is detected,
A pulse encoder that generates a rotation pulse is attached to at least one of the upper and lower work rolls, and a feed length from the tip of the metal plate is calculated based on the output of the pulse encoder. The bending roll device is characterized in that the feed rate of the metal plate is decelerated when a predetermined length is reached before the end of the metal plate is detected by the non-contact sensor. 前記ベンディングロール装置を、前記往復パスする金属板の上側に１本の上作業ロールを配置し、金属板の下側に、前記上作業ロールの両側に離間させて、一対の下ロールを平行に配置し、これらの一対の下ロールのうち、前記往復パスする金属板の進行方向に対して、進行方向手前側の下ロールを前記作業ロール、進行方向奥側の下ロールを前記支持ロールとして、往パスと復パスとで一対の下ロールを使い分けるようにした３本ロール形式のものとした請求項１に記載のベンディングロール装置。
In the bending roll device, one upper work roll is disposed on the upper side of the reciprocating metal plate, and is separated from both sides of the upper work roll on the lower side of the metal plate so that a pair of lower rolls are parallel to each other. Arranged, among these pair of lower rolls, with respect to the traveling direction of the metal plate that reciprocates, the lower roll on the front side in the traveling direction is the work roll, the lower roll on the rear side in the traveling direction is the support roll 2. The bending roll apparatus according to claim 1, wherein the bending roll apparatus is of a three-roll type in which a pair of lower rolls are selectively used for a forward pass and a return pass.
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