JP2002273800A - Device for controlling cutting position of traveling sheet - Google Patents
Device for controlling cutting position of traveling sheetInfo
- Publication number
- JP2002273800A JP2002273800A JP2001074311A JP2001074311A JP2002273800A JP 2002273800 A JP2002273800 A JP 2002273800A JP 2001074311 A JP2001074311 A JP 2001074311A JP 2001074311 A JP2001074311 A JP 2001074311A JP 2002273800 A JP2002273800 A JP 2002273800A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- sheet
- width
- length
- traveling
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/007—Control means comprising cameras, vision or image processing systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Control Of Cutting Processes (AREA)
- Making Paper Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、走行シートを所
定の切断位置で長さ切断または幅切り切断する切断位置
制御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 cutting position control device for cutting a running sheet at a predetermined cutting position in length or width.
【０００２】[0002]
【従来の技術】高速で走行する段ボールシートや厚紙等
の走行シートを、所定の切断位置で長さ切断したり、幅
切り切断したりする際には、予め走行シートに走行方向
で所定の間隔を設けてピッチマークを付与したり、幅縁
部に沿って走行方向に延びるラインマークを付与したり
して、これらのマークを目安として長さ切断位置や幅切
り切断位置を制御することがある。2. Description of the Related Art When a traveling sheet such as a corrugated cardboard sheet or a cardboard that travels at a high speed is cut into a predetermined length at a predetermined cutting position or cut at a predetermined width, a predetermined interval in the traveling direction is applied to the traveling sheet. To provide a pitch mark or a line mark extending in the traveling direction along the width edge to control the length cutting position or the width cutting position using these marks as a guide. .
【０００３】例えば、図５に示すように、コルゲートマ
シンで製造される段ボールシート１の表ライナ紙２に、
予め印刷が施されたプレプリント原紙が用いられる場合
は、表ライナ紙２の長手方向（段ボールシート１の走行
方向）に、所定のピッチで印刷されたプレプリント模様
３の他に、プレプリント模様３のピッチに合わせて所定
の間隔で印刷された、長さ切断位置の目安とされるピッ
チマーク４と、一方の幅縁部に沿って印刷された、幅切
り切断位置の目安とされるラインマーク５が設けられて
いる。ラインマーク５は両方の幅縁部に印刷されること
もある。For example, as shown in FIG. 5, a front liner paper 2 of a corrugated cardboard sheet 1 manufactured by a corrugating machine includes:
When a preprinted base paper that has been printed in advance is used, in addition to the preprinted pattern 3 printed at a predetermined pitch in the longitudinal direction of the front liner paper 2 (the running direction of the corrugated cardboard sheet 1), 3. A pitch mark 4 printed at a predetermined interval in accordance with the pitch of No. 3 as a guide of the length cutting position, and a line printed along one width edge as a guide of the width cutting position A mark 5 is provided. Line marks 5 may be printed on both width edges.
【０００４】なお、前記プレプリント模様３が長手方向
にピッチや周期性を有さない連続的なものであり、長さ
切断が長さ寸法のみを確保すればよく、切断位置の制御
が不要な場合は、ラインマーク５のみが設けられる。ま
た、幅切り切断がされないか、幅切り切断精度があまり
要求されないときは、ピッチマーク４のみが設けられる
こともある。The preprint pattern 3 is a continuous pattern having no pitch or periodicity in the longitudinal direction, so that the length cutting need only secure the length dimension, and it is not necessary to control the cutting position. In this case, only the line mark 5 is provided. When the width cutting is not performed or when the width cutting accuracy is not so required, only the pitch mark 4 may be provided.
【０００５】図５に示したような段ボールシート１をコ
ルゲートマシンで製造する場合は、図４に示すように、
幅切り切断装置としてのスリッタ６と、長さ切断装置と
してのロータリカッタ７の上流側に、それぞれラインマ
ーク５を検出するセンサ８と、ピッチマーク４を検出す
るセンサ９を配置し、これらの各センサ８、９の出力に
基づいて、それぞれスリッタ６とロータリカッタ７の切
断位置を制御している。なお、コルゲートマシンでは、
表ライナ紙２は段ボールシート１の下面側に接着される
ので、前記各センサ８、９は、走行する段ボールシート
１の下面側に配置される。When a corrugated cardboard sheet 1 as shown in FIG. 5 is manufactured by a corrugating machine, as shown in FIG.
A sensor 8 for detecting a line mark 5 and a sensor 9 for detecting a pitch mark 4 are respectively arranged upstream of a slitter 6 as a width cutting device and a rotary cutter 7 as a length cutting device. The cutting positions of the slitter 6 and the rotary cutter 7 are controlled based on the outputs of the sensors 8 and 9 respectively. In addition, in the corrugated machine,
Since the front liner paper 2 is adhered to the lower surface side of the corrugated cardboard sheet 1, the sensors 8 and 9 are arranged on the lower surface side of the traveling corrugated cardboard sheet 1.
【０００６】前記スリッタ６の切断位置制御において
は、通常、予め設定された基準位置からのラインマーク
５の幅方向でのずれをセンサ８で検出し、このずれ量に
応じてスリッタ６の刃の幅方向位置を修正することが多
い。In the control of the cutting position of the slitter 6, a shift in the width direction of the line mark 5 from a preset reference position is usually detected by a sensor 8, and the blade of the slitter 6 is moved in accordance with the shift amount. Often the width position is corrected.
【０００７】前記ロータリカッタ７の切断位置制御にお
いては、センサ９とロータリカッタ７との距離Ｌ、およ
びロータリカッタ７の設定回転速度ＶR と刃７ａの設定
角度θを予め記憶し、センサ９がピッチマーク４を検出
したときに、これらの記憶した各値と段ボールシート１
の走行速度ＶS とから、検出されたピッチマーク４がロ
ータリカッタ７の直下に到達するタイミングと、ロータ
リカッタ７の刃７ａが段ボールシート１を切断するタイ
ミングとを予測し、これらのタイミングが合致するよう
に、ロータリカッタ７の回転開始タイミングを制御して
いる。[0007] In the cutting position control of the rotary cutter 7, the distance between the sensor 9 and the rotary cutter 7 L, and the setting angle θ previously stored set rotational speed V R and the blade 7a of the rotary cutter 7, the sensor 9 When the pitch mark 4 is detected, these stored values and the corrugated board 1
From the traveling speed V S of the rotary cutter 7, the timing at which the detected pitch mark 4 reaches immediately below the rotary cutter 7 and the timing at which the blade 7a of the rotary cutter 7 cuts the corrugated cardboard sheet 1 are predicted. Thus, the rotation start timing of the rotary cutter 7 is controlled.
【０００８】[0008]
【発明が解決しようとする課題】上述した従来の走行シ
ートの幅切り切断や長さ切断における切断位置の制御で
は、以下の問題がある。The control of the cutting position in the width cutting and the length cutting of the conventional traveling sheet described above has the following problems.
【０００９】幅切り切断における切断位置の制御では、
走行シートの蛇行や斜行により、スリッタ直下の部位と
その上流側のセンサ配置部位とで、走行シートのライン
幅方向位置がずれることがあり、センサで検出されたラ
インマークが、必ずしもスリッタ直下で同じライン幅方
向位置を通過しない問題がある。In controlling the cutting position in the width cutting,
Due to the meandering or skew of the traveling sheet, the position of the traveling sheet in the line width direction may be shifted between a portion immediately below the slitter and a sensor arrangement portion on the upstream side thereof, and the line mark detected by the sensor is not necessarily located just below the slitter. There is a problem that they do not pass through the same line width direction position.
【００１０】長さ切断における切断位置の制御では、制
御系やロータリカッタ等の機械系の応答遅れ、わずかの
ライン速度の変動等により、ピッチマークの検出時に予
測した前記ロータリカッタの切断タイミングやピッチマ
ークの到達タイミングがずれる問題がある。また、ピッ
チマークを検出するセンサが、前記プレプリント模様や
印刷等の汚れを誤って検出し、ロータリカッタを誤作動
させる問題もある。In the control of the cutting position in the length cutting, due to a response delay of a mechanical system such as a control system and a rotary cutter, a slight change in line speed, etc., the cutting timing and pitch of the rotary cutter predicted at the time of detecting the pitch mark are detected. There is a problem that the arrival timing of the mark is shifted. Further, there is also a problem that a sensor for detecting a pitch mark erroneously detects dirt such as the preprinted pattern or the printing, and causes a rotary cutter to malfunction.
【００１１】ところが、従来は、走行シートの切断後に
切断位置の適否を確認して、その修正を行なうようなこ
とはなされていない。However, conventionally, it has not been performed to check the suitability of the cutting position after cutting the running sheet and to correct the cut position.
【００１２】そこで、この発明の課題は、走行シートを
所定の長さ切断位置や幅切り切断位置で精度よく切断す
ることである。An object of the present invention is to accurately cut a traveling sheet at a predetermined length cutting position or a width cutting position.
【００１３】[0013]
【課題を解決するための手段】上記の課題を解決するた
めに、この発明は、走行方向に所定の間隔を設けてピッ
チマークが付与された走行シートを、長さ切断装置によ
り切断する長さ切断位置を、前記ピッチマークを目安と
して制御する走行シートの切断位置制御装置において、
前記長さ切断装置の下流側の所定の位置に、長さ切断後
の走行シートの前記ピッチマーク付与面側を撮影する撮
影装置を配置し、この撮影装置の配置位置への長さ切断
後の走行シート先端部の到達を検知する検知手段と、前
記撮影装置で撮影される画像を処理する画像処理装置と
を設け、前記検知手段の出力に基づいて、前記撮影装置
により長さ切断後の走行シート先端部の前記ピッチマー
ク付与面側を撮影し、この撮影された画像から、前記走
行シート先端部のピッチマークと先端切断エッジとの走
行方向の位置関係を前記画像処理装置により求め、この
求められた位置関係に基づいて、前記長さ切断装置によ
る長さ切断位置を修正する構成を採用したものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method for cutting a traveling sheet provided with a pitch mark at a predetermined interval in a traveling direction by a length cutting device. In the cutting position control device of the traveling sheet, which controls the cutting position using the pitch mark as a guide,
At a predetermined position on the downstream side of the length cutting device, a photographing device for photographing the pitch mark providing surface side of the traveling sheet after the length cutting is arranged, and after the length cutting to the arrangement position of the photographing device. Detecting means for detecting the arrival of the leading end of the traveling sheet, and an image processing device for processing an image photographed by the photographing device are provided. Based on an output of the detecting device, traveling after cutting the length by the photographing device. The pitch mark-providing surface side of the leading end of the sheet is photographed, and from the photographed image, the positional relationship in the traveling direction between the pitch mark of the leading end of the running sheet and the leading edge cutting edge is determined by the image processing device. In this configuration, the length cutting position by the length cutting device is corrected based on the obtained positional relationship.
【００１４】すなわち、長さ切断装置の下流側の所定の
位置に、走行シートのピッチマーク付与面側を撮影する
撮影装置を配置し、この撮影装置の配置位置への長さ切
断後の走行シート先端部の到達を検知して、走行シート
先端部のピッチマーク付与面側を切断の都度確実に撮影
し、この撮影画像から実際の先端切断エッジとピッチマ
ークとの走行方向の位置関係を画像処理装置により求
め、この求めた位置関係に基づいて長さ切断位置を修正
することにより、高精度で長さ切断位置を制御できるよ
うにした。That is, a photographing device for photographing the pitch mark providing surface side of the traveling sheet is arranged at a predetermined position on the downstream side of the length cutting device, and the traveling sheet after cutting the length to the position where the photographing device is arranged. The arrival of the leading edge is detected and the leading edge of the running sheet is reliably photographed each time the pitch mark-applied surface is cut. From this photographed image, the actual positional relationship between the leading edge cutting edge and the pitch mark in the traveling direction is image processed. The length cutting position can be controlled with high accuracy by obtaining the length cutting position based on the obtained positional relationship with the apparatus.
【００１５】また、この発明は、少なくとも一方の幅縁
部に沿って走行方向に延びるラインマークを付与された
走行シートを、長さ切断装置により所定の長さ寸法に長
さ切断し、この長さ切断する前に、幅切り切断装置によ
り切断する幅切り切断位置を、前記ラインマークを目安
として制御する走行シートの切断位置制御装置におい
て、前記長さ切断装置の下流側の所定の位置に、長さ切
断後の走行シートの前記少なくとも一方の幅縁部のライ
ンマーク付与面側を撮影する撮影装置を配置し、この撮
影装置の配置位置への長さ切断後の走行シートの到達を
検知する検知手段と、前記撮影装置で撮影される画像を
処理する画像処理装置とを設け、前記検知手段の出力に
基づいて、前記撮影装置により長さ切断後の走行シート
幅縁部の前記ラインマーク付与面側を撮影し、この撮影
された画像から、前記走行シート幅縁部のラインマーク
と幅切り切断エッジとの幅方向の位置関係を前記画像処
理装置により求め、この求められた位置関係に基づい
て、前記幅切り切断装置による幅切り切断位置を修正す
る構成も採用した。According to the present invention, a traveling sheet provided with a line mark extending in the traveling direction along at least one width edge is cut into a predetermined length by a length cutting device. Before cutting, the width cutting position to be cut by the width cutting device, in the traveling sheet cutting position control device that controls the line mark as a guide, at a predetermined position downstream of the length cutting device, A photographing device for photographing the side of the at least one width edge of the running sheet after the length cutting, on which the line mark is provided, is arranged, and the arrival of the running sheet after the length cutting to the position where the photographing device is arranged is detected. A detecting means, and an image processing device for processing an image photographed by the photographing device, wherein the line of the running seat width edge after the length is cut by the photographing device based on an output of the detecting device. From the photographed image, the positional relationship in the width direction between the line mark of the running seat width edge and the width cutting edge is determined by the image processing apparatus from the captured image. A configuration for correcting the width cutting position by the width cutting device based on the relationship is also employed.
【００１６】すなわち、長さ切断装置の下流側の所定の
位置に、走行シートのラインマーク付与面側の幅縁部を
撮影する撮影装置を配置し、この撮影装置の配置位置へ
の長さ切断後の走行シートの到達を検知して、走行シー
ト幅縁部のラインマーク付与面側を切断の都度確実に撮
影し、この撮影画像から実際の幅切り切断エッジとライ
ンマークとの幅方向の位置関係を画像処理装置により求
め、この求めた位置関係に基づいて幅切り切断位置を修
正することにより、高精度で幅切り切断位置を制御でき
るようにした。That is, a photographing device for photographing the width edge of the traveling sheet on the side of the line mark providing surface is arranged at a predetermined position on the downstream side of the length cutting device, and the length is cut to the position where the photographing device is arranged. Detecting the arrival of the traveling sheet later, the line mark-applied surface side of the width edge of the traveling sheet is reliably photographed each time cutting is performed, and the actual width-cutting edge and the position in the width direction of the line mark are obtained from this photographed image. The relationship is obtained by the image processing apparatus, and the width cutting position is corrected based on the obtained positional relationship, so that the width cutting position can be controlled with high accuracy.
【００１７】なお、前記長さ切断後の走行シートの撮影
装置配置位置への到達を検知する手段としては、撮影装
置配置位置でセンサ等により走行シート、またはその先
端部を直接検出する方法の他に、例えば、ライン上流側
の長さ切断装置の切断タイミング信号と、長さ切断装置
の下流側のライン速度とから、撮影装置配置位置への到
達タイミングを予測する方法等も採用することができ
る。Means for detecting the arrival of the running sheet after the length cutting at the position where the photographing device is arranged include a method of directly detecting the traveling sheet or the leading end thereof by a sensor or the like at the position where the photographing device is arranged. In addition, for example, a method of predicting the arrival timing to the photographing device arrangement position from the cutting timing signal of the length cutting device on the upstream side of the line and the line speed on the downstream side of the length cutting device can be adopted. .
【００１８】前記撮影装置の撮影タイミングと同期し
て、前記走行シート先端部のピッチマーク付与面側、ま
たは前記走行シート幅縁部のラインマーク付与面側を照
射するストロボと、このストロボで照射される走行シー
トの先端部または幅縁部の背景として配置されるバック
プレートとを設け、このバックプレートを暗色のものと
することにより、ピッチマークやラインマークと各切断
エッジとを鮮明に撮影して、これらの位置関係をより正
確に求めることができる。In synchronism with the photographing timing of the photographing device, a strobe for irradiating a pitch mark providing surface side of the leading end of the running sheet or a line mark providing surface side of the running sheet width edge portion, and irradiating with the strobe. A back plate arranged as a background of the leading edge or the width edge of the running seat is provided, and by making this back plate a dark color, pitch marks and line marks and each cutting edge can be clearly photographed. , These positional relationships can be determined more accurately.
【００１９】[0019]
【発明の実施の形態】以下、図面に基づき、この発明の
実施形態を説明する。図１は、本発明に係る走行シート
の切断位置制御装置を採用した、コルゲートマシンで製
造される段ボールシート１を幅切り切断するスリッタ６
と、幅切りされた段ボールシート１を長さ切断するロー
タリカッタ７の部分を示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a slitter 6 for cutting a corrugated cardboard sheet 1 manufactured by a corrugating machine, which employs a traveling sheet cutting position control device according to the present invention.
2 shows a portion of the rotary cutter 7 for cutting the width of the corrugated cardboard sheet 1 in length.
【００２０】前記段ボールシート１は、図５に示したも
のと同様に、表ライナ紙２に予め印刷が施されたプレプ
リント原紙を用いたものであり、表ライナ紙２の長手方
向（段ボールシート１の走行方向）に、所定のピッチで
印刷されたプレプリント模様３の他に、プレプリント模
様３のピッチに合わせて所定の間隔で印刷された、長さ
切断位置の目安とされるピッチマーク４と、一方の幅縁
部に沿って印刷された、幅切り切断位置の目安とされる
ラインマーク５が設けられている。ピッチマーク４およ
びラインマーク５は、いずれも所定の幅Ｗ1 、Ｗ2 を有
する太線状に形成されている。As shown in FIG. 5, the corrugated cardboard sheet 1 is made of preprinted base paper in which the front liner paper 2 has been printed in advance, and the longitudinal direction of the front liner paper 2 (corrugated cardboard sheet). 1 running direction), in addition to the preprinted pattern 3 printed at a predetermined pitch, a pitch mark printed at a predetermined interval in accordance with the pitch of the preprinted pattern 3 and serving as a guide of the length cutting position. 4 and a line mark 5 which is printed along one width edge and serves as an indication of a width cutting position. Each of the pitch mark 4 and the line mark 5 is formed in a thick line shape having predetermined widths W 1 and W 2 .
【００２１】前記スリッタ６とロータリカッタ７の各上
流側には、図４に示したものと同様に、それぞれライン
マーク５を検出するセンサ８と、ピッチマーク４を検出
するセンサ９が、走行する段ボールシート１の下面側に
配置され、これらのセンサ８、９の出力と、ロータリカ
ッタ７の入側コンベア１０の搬送速度（段ボールシート
１の走行速度ＶS ）を検出する回転計１１の出力が、ス
リッタ６とロータリカッタ７の作動を制御するコントロ
ーラ１２に入力されるようになっている。また、コント
ローラ１２には、センサ９とロータリカッタ７との距離
Ｌ、およびロータリカッタ７の設定回転速度ＶR と刃７
ａの設定角度θも予め記憶されている。A sensor 8 for detecting a line mark 5 and a sensor 9 for detecting a pitch mark 4 run on the upstream side of the slitter 6 and the rotary cutter 7, respectively, as shown in FIG. The outputs of these sensors 8 and 9 and the output of a tachometer 11 for detecting the transport speed (running speed V S of the corrugated cardboard sheet 1) of the input side conveyor 10 of the rotary cutter 7 are arranged on the lower surface side of the corrugated cardboard sheet 1. , And the controller 12 that controls the operation of the slitter 6 and the rotary cutter 7. In addition, the controller 12, the sensor 9 and the distance between the rotary cutter 7 L, and setting the rotation speed V R and the blade 7 of the rotary cutter 7
The set angle θ of a is also stored in advance.
【００２２】前記コントローラ１２は、前述した従来技
術と同様に、センサ８で検出されるラインマーク５の幅
方向でのずれ量に応じて、スリッタ６の刃の幅方向位置
を制御するとともに、センサ９からのピッチマーク４の
検出信号を入力したときに、前記記憶されたセンサ９と
ロータリカッタ７との距離Ｌ、およびロータリカッタ７
の設定回転速度ＶR と刃７ａの設定角度θの各値と、回
転計１１から入力される段ボールシート１の走行速度Ｖ
S の値とから、検出されたピッチマーク４がロータリカ
ッタ７の直下に到達するタイミングと、ロータリカッタ
７の刃７ａが段ボールシート１を切断するタイミングと
を予測し、これらのタイミングが合致するように、ロー
タリカッタ７の回転開始タイミングを制御する。The controller 12 controls the position of the blade of the slitter 6 in the width direction in accordance with the amount of displacement of the line mark 5 in the width direction detected by the sensor 8 as in the prior art described above. When the detection signal of the pitch mark 4 is input from the sensor 9, the distance L between the stored sensor 9 and the rotary cutter 7 and the rotary cutter 7
Setting rotational speed V R and the values of set angle θ of the blade 7a, the running speed V of the cardboard sheet 1 inputted from tachometer 11
From the value of S , the timing at which the detected pitch mark 4 reaches immediately below the rotary cutter 7 and the timing at which the blade 7a of the rotary cutter 7 cuts the corrugated cardboard sheet 1 are predicted, and these timings are matched. Next, the rotation start timing of the rotary cutter 7 is controlled.
【００２３】図２に示すように、この実施形態では、ロ
ータリカッタ７の出側コンベア１３の下流側に、長さ切
断後の段ボールシート１ａのピッチマーク４とラインマ
ーク５が印刷された下面側の先端幅縁部を撮影する撮影
装置としてのＣＣＤ（ChargeCoupled Device)カメラ１
４と、このカメラ１４で撮影される先端幅縁部を照射す
るストロボ１５とが、搬送ラインの下方に設けられ、そ
の搬送ライン上方に、段ボールシート１ａの先端部の到
達を検知するセンサ１６と、前記撮影される先端幅縁部
の背景とされる黒色のバックプレート１７とが設けられ
ている。As shown in FIG. 2, in this embodiment, on the downstream side of the outlet conveyor 13 of the rotary cutter 7, the lower surface side of the corrugated cardboard sheet 1a after the length cutting on which the pitch marks 4 and the line marks 5 are printed. (ChargeCoupled Device) camera 1 as a photographing device for photographing the width edge of the tip
4 and a strobe 15 for irradiating the edge of the leading edge captured by the camera 14 are provided below the transport line, and a sensor 16 for detecting the arrival of the distal end of the corrugated cardboard sheet 1a above the transport line. A black back plate 17 is provided as a background of the leading edge edge portion to be photographed.
【００２４】前記カメラ１４、ストロボ１５およびセン
サ１６は、画像処理装置を備えたコンピュータ１８と接
続され、カメラ１４とストロボ１５は、センサ１６の検
出信号に基づいて、コンピュータ１８により互いに同期
して作動される。コンピュータ１８は前記コントローラ
１２とも接続され、後述するように、カメラ１４の撮影
画像を処理して、その処理結果に基づいて、スリッタ６
の幅切り切断位置を修正する制御量と、ロータリカッタ
７の作動タイミングを修正する制御量とをコントローラ
１２に送信するようになっている。また、コンピュータ
１８には、後述するように、長さ切断位置と幅切り切断
位置の各許容範囲も設定されている。The camera 14, the strobe 15 and the sensor 16 are connected to a computer 18 having an image processing device. The camera 14 and the strobe 15 are operated in synchronism with each other by the computer 18 based on a detection signal of the sensor 16. Is done. The computer 18 is also connected to the controller 12 and processes an image captured by the camera 14 as described later.
The control amount for correcting the width cutting position and the control amount for correcting the operation timing of the rotary cutter 7 are transmitted to the controller 12. As will be described later, the computer 18 also sets respective allowable ranges of the length cutting position and the width cutting position.
【００２５】図３に示すように、カメラ１４で撮影され
た段ボールシート１ａの先端幅縁部の画像は、段ボール
シート１ａの印刷がない部分が最も明るく、次いでピッ
チマーク４とラインマーク５が印刷された部分が明る
く、バックプレート１７の部分が最も暗い。この明暗を
有する画像は、前記コンピュータ１８の画像処理装置に
より、段ボールシート１ａの走行方向（Ｘ方向）と幅方
向（Ｙ方向）とについて、それぞれ明るい段ボールシー
ト１ａ側からの外向きと、暗いバックプレート１７側か
らの内向きとで、異なる２つの部位で走査される。As shown in FIG. 3, the image of the leading edge of the corrugated cardboard sheet 1a taken by the camera 14 has the brightest portion where the corrugated cardboard sheet 1a is not printed, and then the pitch mark 4 and the line mark 5 are printed. The brightened portion is bright, and the portion of the back plate 17 is darkest. The image having the light and darkness is, by the image processing device of the computer 18, the outward direction from the bright cardboard sheet 1a side and the dark background in the running direction (X direction) and the width direction (Y direction) of the cardboard sheet 1a. The scanning is performed at two different portions in the inward direction from the plate 17 side.
【００２６】前記画像のＸ方向では、外向きの走査でピ
ッチマーク４内側幅端の座標位置Ｘ 1 が、ピッチマーク
４のない部位の内向きの走査で先端切断エッジの座標位
置Ｘ 2 が求められ、これらの座標位置の差Ｘ1 −Ｘ2 が
算出される。また、画像のＹ方向では、外向きの走査で
ラインマーク５内側幅端の座標位置Ｙ1 が、内向きの走
査で幅切り切断エッジの座標位置Ｙ2 が求められ、これ
らの座標位置の差Ｙ1−Ｙ2 が算出される。なお、前記
内向きと外向きの走査は、同じ部位で行なってもよい。In the X direction of the image, the pi
Coordinate position X of inner edge of touch mark 4 1But the pitch mark
Coordinate position of cutting edge at the inward scan of the part without 4
X TwoIs obtained, and the difference X between these coordinate positions is obtained.1-XTwoBut
Is calculated. Also, in the Y direction of the image,
Coordinate position Y of inner end of line mark 51But running inward
Position Y of width cutting edgeTwoIs required, this
Difference Y between these coordinate positions1-YTwoIs calculated. The above
The inward and outward scans may be performed at the same site.
【００２７】コンピュータ１８には、長さ切断位置と幅
切り切断位置の各基準位置と各許容範囲とが、前記ピッ
チマーク４とラインマーク５の各幅Ｗ1 、Ｗ2 に対し
て、それぞれ以下のように設定されている。なお、画像
のＸ−Ｙ座標は、いずれも段ボールシート１ａの内側方
向を正方向としている。The computer 18 determines that each reference position and each allowable range of the length cutting position and the width cutting position are as follows with respect to the widths W 1 and W 2 of the pitch mark 4 and the line mark 5, respectively. It is set as follows. Note that the XY coordinates of the image all have the inside direction of the cardboard sheet 1a as the positive direction.
【００２８】 長さ切断位置の基準位置 ：Ｘ1 −Ｘ2 ＝０．５Ｗ1 （１） 幅切り切断位置の基準位置：Ｙ1 −Ｙ2 ＝１．０Ｗ2 （２） 長さ切断位置の許容範囲 ：０．２Ｗ1 ≦ Ｘ1 −Ｘ2 ≦０．８Ｗ1 （３） 幅切り切断位置の許容範囲：０．５Ｗ2 ≦ Ｙ1 −Ｙ2 ≦１．５Ｗ2 （４） コンピュータ１８は、前記座標位置の差Ｘ1 −Ｘ2 、Ｙ
1 −Ｙ2 が、（３）式または（４）式の許容範囲を外れ
たときにのみ、（１）式または（２）式の基準位置との
ずれを求め、このずれ量を前記コントローラ１２に制御
量として送信する。なお、許容範囲を設けず、各切断位
置の基準位置からのずれに応じて、そのまま制御量をコ
ントローラ１２に送信してもよい。Reference position of length cutting position: X 1 −X 2 = 0.5 W 1 (1) Reference position of width cutting position: Y 1 −Y 2 = 1.0 W 2 (2) Length cutting position Allowable range: 0.2W 1 ≦ X 1 −X 2 ≦ 0.8W 1 (3) Allowable range of width cutting position: 0.5W 2 ≦ Y 1 −Y 2 ≦ 1.5W 2 (4) Computer 18 , The difference between the coordinate positions X 1 −X 2 , Y
Only when 1− Y 2 is outside the permissible range of the expression (3) or (4), the deviation from the reference position of the expression (1) or (2) is obtained. Is transmitted as the control amount. It should be noted that the control amount may be transmitted to the controller 12 as it is, according to the deviation of each cutting position from the reference position without providing an allowable range.
【００２９】コントローラ１２は、送信された制御量が
長さ切断位置に対するものであるときは、その制御量に
応じてロータリカッタ７の作動タイミングを修正し、制
御量が幅切り切断位置に対するものであるときは、その
制御量に応じてスリッタ６の幅切り切断位置を修正し
て、それぞれの基準位置で正確に切断するように制御す
る。なお、許容範囲を連続して所定回数外れたときにの
み、各切断位置を修正するようにしてもよい。When the transmitted control amount is for the length cutting position, the controller 12 corrects the operation timing of the rotary cutter 7 according to the control amount, and the control amount is for the width cutting position. In some cases, the width cutting position of the slitter 6 is corrected according to the control amount, and control is performed so as to cut accurately at each reference position. It should be noted that each cutting position may be corrected only when the allowable range is continuously deviated by a predetermined number of times.
【００３０】上述した実施形態では、ピッチマークとラ
インマークを所定幅を有する太線状のものとし、これら
のマークと各切断エッジの位置関係を求めるための画像
処理を、画像をＸ方向（走行シートの走行方向）とＹ方
向（走行シートの幅方向）とに走査する方法で行なった
が、ピッチマークとラインマークは、実施形態のような
太線状のものに限定されることはなく、これらと切断エ
ッジとの位置関係を求めるための画像処理方法について
も、例えば、マークの面積を測定する方法等、適宜各マ
ークの形態に応じて選択することができる。In the above-described embodiment, the pitch mark and the line mark are formed in a thick line shape having a predetermined width, and the image processing for obtaining the positional relationship between these marks and each cutting edge is performed in the X direction (the running sheet). Scan direction and the Y direction (width direction of the running sheet), but the pitch mark and the line mark are not limited to the thick line shape as in the embodiment. The image processing method for obtaining the positional relationship with the cutting edge can be appropriately selected according to the form of each mark, such as a method of measuring the area of the mark.
【００３１】また、この実施形態では、切断後の走行シ
ートの先端部と幅縁部とを、一つの撮影装置で先端幅縁
部として一緒の画面に撮影したが、別々の撮影装置で先
端部と幅縁部とを別の画面に撮影してもよい。In this embodiment, the leading end and the width edge of the cut running sheet are photographed on the same screen as the leading end width edge by one photographing device. And the width edge may be photographed on different screens.
【００３２】[0032]
【発明の効果】以上のように、この発明の走行シートの
切断位置制御装置は、長さ切断装置の下流側の所定の位
置に、走行シートのピッチマーク付与面側を撮影する撮
影装置を配置し、この撮影装置の配置位置への長さ切断
後の走行シート先端部の到達を検知して、走行シート先
端部のピッチマーク付与面側を切断の都度確実に撮影
し、この撮影画像から実際の先端切断エッジとピッチマ
ークとの走行方向の位置関係を画像処理装置により求
め、この求めた位置関係に基づいて長さ切断位置を修正
するようにしたので、走行シートを高精度で長さ切断す
ることができる。As described above, the traveling sheet cutting position control device of the present invention has the photographing device for photographing the pitch mark applying surface side of the traveling sheet at a predetermined position downstream of the length cutting device. Then, by detecting the arrival of the leading end of the traveling sheet after cutting the length to the position where the photographing device is arranged, the leading end of the traveling sheet is reliably photographed every time the pitch mark-applied surface is cut. The positional relationship between the leading edge of the cutting edge and the pitch mark in the traveling direction is determined by the image processing device, and the length cutting position is corrected based on the determined positional relationship. can do.
【００３３】また、この発明は、長さ切断装置の下流側
の所定の位置に、走行シート幅縁部のラインマーク付与
面側を撮影する撮影装置を配置し、この撮影装置の配置
位置への長さ切断後の走行シートの到達を検知して、走
行シート幅縁部のラインマーク付与面側を切断の都度確
実に撮影し、この撮影画像から実際の幅切り切断エッジ
とラインマークとの幅方向の位置関係を画像処理装置に
より求め、この求めた位置関係に基づいて幅切り切断位
置を修正するようにしたので、走行シートを高精度で幅
切り切断することができる。Further, according to the present invention, a photographing device for photographing the line mark providing surface side of the running sheet width edge is arranged at a predetermined position on the downstream side of the length cutting device, and the photographing device is moved to the position where the photographing device is arranged. Detecting the arrival of the traveling sheet after cutting the length, reliably taking a photograph of the line mark-applied surface side of the traveling sheet width edge every time cutting, and from this photographed image, the actual width of the cutting edge and the width of the line mark Since the positional relationship in the direction is obtained by the image processing apparatus, and the width cutting position is corrected based on the obtained positional relationship, the running sheet can be cut with high precision.
【００３４】さらに、前記撮影装置の撮影タイミングと
同期して、走行シート先端部のピッチマーク付与面側、
または幅縁部のラインマーク付与面側を照射するストロ
ボと、このストロボで照射される走行シートの先端部ま
たは幅縁部の背景として配置されるバックプレートとを
設け、このバックプレートを暗色のものとすることによ
り、ピッチマークやラインマークと各切断エッジとを鮮
明に撮影して、これらの位置関係をより正確に求め、前
記長さ切断や幅切り切断の切断位置の精度をさらに高め
ることができる。Further, in synchronism with the photographing timing of the photographing device, the leading end of the running seat is provided with a pitch mark on the side thereof.
Alternatively, a strobe for irradiating the line mark providing surface side of the width edge and a back plate disposed as a background of the leading end portion or the width edge of the traveling sheet irradiated with the strobe are provided, and the back plate is dark. By doing so, the pitch mark or line mark and each cutting edge are clearly photographed, the positional relationship between them is more accurately obtained, and the accuracy of the cutting position of the length cutting or the width cutting is further improved. it can.
【図１】本発明に係る走行シートの切断位置制御装置を
採用したコルゲートマシンのスリッタとロータリカッタ
の部分を示す概略正面図FIG. 1 is a schematic front view showing a slitter and a rotary cutter of a corrugating machine employing a traveling sheet cutting position control device according to the present invention.
【図２】図１の要部拡大正面図FIG. 2 is an enlarged front view of a main part of FIG.
【図３】図２のカメラで撮影された画像を示す平面図FIG. 3 is a plan view showing an image taken by the camera of FIG. 2;
【図４】従来のコルゲートマシンのスリッタとロータリ
カッタの部分を示す概略正面図FIG. 4 is a schematic front view showing a slitter and a rotary cutter of a conventional corrugating machine.
【図５】図１および図４のコルゲートマシンで製造され
る段ボールシートを示す平面図FIG. 5 is a plan view showing a cardboard sheet manufactured by the corrugating machine of FIGS. 1 and 4;
１、１ａ 段ボールシート ２ 表ライナ紙 ３ プレプリント模様 ４ ピッチマーク ５ ラインマーク ６ スリッタ ７ ロータリカッタ ７ａ 刃 ８、９ センサ １０ コンベア １１ 回転計 １２ コントローラ １３ コンベア １４ カメラ １５ ストロボ １６ センサ １７ バックプレート １８ コンピュータ DESCRIPTION OF SYMBOLS 1, 1a Corrugated cardboard sheet 2 Front liner paper 3 Preprint pattern 4 Pitch mark 5 Line mark 6 Slitter 7 Rotary cutter 7a Blade 8, 9 Sensor 10 Conveyor 11 Tachometer 12 Controller 13 Conveyor 14 Camera 15 Strobe 16 Backplate 18 Computer
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3C024 FF02 3E075 AA23 BA82 CA01 DA03 DA05 DA14 DA15 DA32 DB02 DB04 DB13 DB14 FA04 FA13 GA02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3C024 FF02 3E075 AA23 BA82 CA01 DA03 DA05 DA14 DA15 DA32 DB02 DB04 DB13 DB14 FA04 FA13 GA02
Claims (3)
ークが付与された走行シートを、長さ切断装置により切
断する長さ切断位置を、前記ピッチマークを目安として
制御する走行シートの切断位置制御装置において、前記
長さ切断装置の下流側の所定の位置に、長さ切断後の走
行シートの前記ピッチマーク付与面側を撮影する撮影装
置を配置し、この撮影装置の配置位置への長さ切断後の
走行シート先端部の到達を検知する検知手段と、前記撮
影装置で撮影される画像を処理する画像処理装置とを設
け、前記検知手段の出力に基づいて、前記撮影装置によ
り長さ切断後の走行シート先端部の前記ピッチマーク付
与面側を撮影し、この撮影された画像から、前記走行シ
ート先端部のピッチマークと先端切断エッジとの走行方
向の位置関係を前記画像処理装置により求め、この求め
られた位置関係に基づいて、前記長さ切断装置による長
さ切断位置を修正するようにしたことを特徴とする走行
シートの切断位置制御装置。1. A traveling sheet cutting position for controlling a length cutting position of a traveling sheet provided with a pitch mark at a predetermined interval in a traveling direction by a length cutting device using the pitch mark as a guide. In the control device, at a predetermined position on the downstream side of the length cutting device, a photographing device for photographing the pitch mark providing surface side of the traveling sheet after the length cutting is arranged, and the photographing device is disposed at the position where the photographing device is arranged. Detecting means for detecting the arrival of the leading end of the running sheet after cutting, and an image processing device for processing an image photographed by the photographing device are provided, and the length of the photographing device is determined based on the output of the detecting device. The pitch mark imparting surface side of the leading end of the traveling sheet after cutting is photographed, and from this photographed image, the positional relationship in the traveling direction between the pitch mark of the leading end of the traveling sheet and the leading edge cutting edge is determined. A running sheet cutting position control device, wherein the length cutting position is corrected by the length cutting device based on the obtained positional relationship by an image processing device.
向に延びるラインマークを付与された走行シートを、長
さ切断装置により所定の長さ寸法に長さ切断し、この長
さ切断する前に、幅切り切断装置により切断する幅切り
切断位置を、前記ラインマークを目安として制御する走
行シートの切断位置制御装置において、前記長さ切断装
置の下流側の所定の位置に、長さ切断後の走行シートの
前記少なくとも一方の幅縁部のラインマーク付与面側を
撮影する撮影装置を配置し、この撮影装置の配置位置へ
の長さ切断後の走行シートの到達を検知する検知手段
と、前記撮影装置で撮影される画像を処理する画像処理
装置とを設け、前記検知手段の出力に基づいて、前記撮
影装置により長さ切断後の走行シート幅縁部の前記ライ
ンマーク付与面側を撮影し、この撮影された画像から、
前記走行シート幅縁部のラインマークと幅切り切断エッ
ジとの幅方向の位置関係を前記画像処理装置により求
め、この求められた位置関係に基づいて、前記幅切り切
断装置による幅切り切断位置を修正するようにしたこと
を特徴とする走行シートの切断位置制御装置。2. A traveling sheet provided with a line mark extending in a traveling direction along at least one width edge is cut into a predetermined length by a length cutting device, and before the length cutting. In a running sheet cutting position control device that controls the width cutting position to be cut by the width cutting device, using the line mark as a guide, at a predetermined position on the downstream side of the length cutting device, Detecting means for arranging a photographing device for photographing the line mark providing surface side of the at least one width edge of the traveling sheet of the traveling sheet, and detecting arrival of the traveling sheet after cutting the length to the arrangement position of the photographing device, An image processing device for processing an image photographed by the photographing device, and taking an image of the line mark providing surface side of the running sheet width edge after the length cutting by the photographing device based on an output of the detecting means. Shadow and from this captured image,
The positional relationship in the width direction between the line mark of the running sheet width edge and the width cutting edge is obtained by the image processing device, and based on the obtained positional relationship, the width cutting position by the width cutting device is determined. A travel sheet cutting position control device, characterized in that it is modified.
て、前記走行シート先端部のピッチマーク付与面側、ま
たは前記走行シート幅縁部のラインマーク付与面側を照
射するストロボと、このストロボで照射される走行シー
トの先端部または幅縁部の背景として配置されるバック
プレートとを設け、このバックプレートを暗色のものと
した請求項１または２に記載の走行シートの切断位置制
御装置。3. A strobe that irradiates a pitch mark-applied surface side of the leading end of the traveling sheet or a line mark-applied surface side of the traveling sheet width edge in synchronization with a photographing timing of the photographing device. The travel sheet cutting position control device according to claim 1 or 2, further comprising a back plate disposed as a background of a front end portion or a width edge portion of the travel sheet to be irradiated, wherein the back plate has a dark color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001074311A JP3560922B2 (en) | 2001-03-15 | 2001-03-15 | Traveling sheet cutting position control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001074311A JP3560922B2 (en) | 2001-03-15 | 2001-03-15 | Traveling sheet cutting position control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002273800A true JP2002273800A (en) | 2002-09-25 |
| JP3560922B2 JP3560922B2 (en) | 2004-09-02 |
Family
ID=18931602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001074311A Expired - Lifetime JP3560922B2 (en) | 2001-03-15 | 2001-03-15 | Traveling sheet cutting position control device |
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| JP2005297101A (en) * | 2004-04-08 | 2005-10-27 | Rengo Co Ltd | Cutting position detecting device of traveling sheet |
| JP2005349485A (en) * | 2004-06-08 | 2005-12-22 | Daisan Shigyo Kk | Cutting device and wrapper manufacturing method |
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