JPS63242851A - Defective fold inspecting device - Google Patents
Defective fold inspecting deviceInfo
- Publication number
- JPS63242851A JPS63242851A JP7417287A JP7417287A JPS63242851A JP S63242851 A JPS63242851 A JP S63242851A JP 7417287 A JP7417287 A JP 7417287A JP 7417287 A JP7417287 A JP 7417287A JP S63242851 A JPS63242851 A JP S63242851A
- Authority
- JP
- Japan
- Prior art keywords
- folding
- signature
- edge
- folding machine
- fold
- 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
- 230000002950 deficient Effects 0.000 title abstract description 12
- 230000007547 defect Effects 0.000 claims description 23
- 238000007689 inspection Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 241001122767 Theaceae Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/18—Oscillating or reciprocating blade folders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/33—Modifying, selecting, changing orientation
- B65H2301/331—Skewing, correcting skew, i.e. changing slightly orientation of material
Landscapes
- Controlling Sheets Or Webs (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は輪転印刷機に連接する折機により所定のサイ
ズに折られた折丁の折不良、折精度を検出する折不良検
査装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a folding defect inspection device for detecting folding defects and folding accuracy of signatures folded to a predetermined size by a folding machine connected to a rotary printing press.
一般に、輪転印刷機には印刷が終了した巻取紙を各々所
定の仕様形態（大きさ、頁数、折力）に折るための三角
板、ロータリ折機、チョッパ折機がインラインで接続さ
れている。通常の折機は印刷機のサイズに合せてＡ判系
列とＢ判系列とに大別でき、それぞれ何種類かの折が作
り出せるようになっている。そして、折機は各々決めら
れた位置で折られるように調整されているが、用紙のテ
ンション不良とか印刷機の速度変化等により正しく決め
られた位置で折られない折丁が作られることがある。こ
の原因としては用紙のテンション変動により用紙の走行
状態が変動することや、咥と差込刃との関係において折
丁が平行に咥えられないこと等がある。In general, a rotary printing press is connected in-line with a triangular plate, a rotary folding machine, and a chopper folding machine for folding the web after printing into predetermined specifications (size, number of pages, fold strength). Ordinary folding machines can be roughly divided into A-size series and B-size series, depending on the size of the printing press, and each can produce several types of folds. Each folding machine is adjusted to fold at a predetermined position, but due to poor paper tension, changes in printing press speed, etc., some signatures may not be folded at the correct position. . The causes of this include fluctuations in the running state of the paper due to fluctuations in paper tension, and the fact that the signatures are not held parallel to each other due to the relationship between the mouth and the insert blade.
このため、印刷オペレータは折機から排出される折丁を
その都度検査する必要がある。しかしながら、連続して
折不良が発生するとは限らず直ちに発見できない場合が
あり、用紙のロスが防ぎにくかった。更に、折不良を発
見した場合、かなり以前の折丁にさかのぼって検査する
必要が出てきて時間の損失となる。特に、問題となるの
は、ロータリ折機により折られた折り位置のズレ、また
は曲がった不良折丁がたまに発生することであるが、原
因の第１としては用紙のテンション変動により用紙の走
行状態が変化する場合、原因の第２としては咥と差込刃
との関係により平行に咥えられなかった時等に折り不良
が発生する。For this reason, the printing operator must inspect the signatures each time they are discharged from the folding machine. However, folding defects do not necessarily occur continuously and may not be detected immediately, making it difficult to prevent paper loss. Furthermore, if a folding defect is discovered, it becomes necessary to go back and inspect the signatures from a long time ago, resulting in a loss of time. Particularly problematic is the occasional occurrence of misaligned folds or bent defective signatures when folded by a rotary folding machine, but the first cause is the paper running condition due to fluctuations in paper tension. The second cause is when the blade is not gripped parallel to the blade due to the relationship between the grip and the insertion blade, resulting in poor folding.
従来は、このように折不良が発生しても、人間の目によ
って検査をする以外になく、この検査は大変手間のかか
るもので、正確性にも問題があった。Conventionally, even when such folding defects occur, the only option is to inspect them with the human eye, and this inspection is very time-consuming and has problems with accuracy.
この発明は上述した事情に対処すべくなされたもので、
折丁の折位置のずれや曲りを自動的に、かつ正確に検出
できる簡単な構成の折不良検査装置を提供することをそ
の目的とする。This invention was made to deal with the above-mentioned circumstances,
It is an object of the present invention to provide a folding defect inspection device with a simple configuration capable of automatically and accurately detecting deviations and bends in folding positions of signatures.
この発明による折不良検査装置はロータリ折機から排出
されチョッパ折機へ搬送される折丁の両側の側端位置に
設けられた第１、第２エツジセンサ１００ 、１０１と
、折機が１折丁を作るのに同期して１つのメインタイミ
ング信号を発生する第１タイミング発生器２１０と、折
機の動作速度に同期してメインタイミング信号より高周
波数のサブタイミング信号を発生する第２タイミング発
生器２１１と、メインタイミング信号の１周期の間で前
記第１、第２エツジセンサが折丁の前端を検出してから
折丁の後端を検出するまでの時間間隔に応じて折丁の両
側の側端における搬送方向長さを検出する手段１３０
、１３１と、前記サブタイミング信号毎に折丁の両側の
側端エツジ位置を検出する手段１１０ 、 Ｉｌｌと、
検出された前記搬送方向長さと側端エツジ位置に応じて
折り不良を検査する手段１４０ 、１４１ 、１７０
、１７１ 、１６０ 、１８１ 、１８０ 。The folding defect inspection device according to the present invention includes first and second edge sensors 100 and 101 provided at the side edge positions on both sides of the signatures discharged from the rotary folding machine and conveyed to the chopper folding machine, and the folding machine detects one signature. A first timing generator 210 generates one main timing signal in synchronization with the folding machine, and a second timing generator 210 generates a sub-timing signal with a higher frequency than the main timing signal in synchronization with the operating speed of the folding machine. 211, and the sides on both sides of the signature according to the time interval from when the first and second edge sensors detect the front edge of the signature until they detect the rear edge of the signature during one period of the main timing signal. Means 130 for detecting the length in the conveying direction at the end
, 131; means 110, Ill for detecting the positions of the side edges of the signature for each of the sub-timing signals;
Means 140, 141, 170 for inspecting folding defects according to the detected length in the transport direction and the side edge position.
, 171 , 160 , 181 , 180 .
１８１とを具備する。181.
この発明による折不良検査装置によれば、折丁の両側の
側端のエツジ位置を複数箇所で検出するとともに、両側
の側端における搬送方向長さを検出し、これらを基準値
と比較することにより、折丁の折位置のずれや曲りを検
出できる。According to the folding defect inspection device according to the present invention, it is possible to detect the edge positions of both side edges of a signature at a plurality of locations, detect the lengths of both side edges in the conveyance direction, and compare these with a reference value. This makes it possible to detect deviations and bends in the folding position of signatures.
以下図面を参照してこの発明による折不良検査装置の一
実施例を説明する。第１図は第１実施例に係る折不良検
査装置が設けられた輪転印刷機の折機の構成を示す概略
図である。折機はロータリ折機とチョッパ折機とから構
成されている。４色目の印刷ユニットから排出された印
刷用紙（巻取り紙）は三角板１５、ニップローラ１６等
により絞られ、用紙の流れ方向における中心線を折目と
して２つ折にされる。An embodiment of the folding defect inspection apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing the configuration of a folding machine of a rotary printing press equipped with a folding defect inspection device according to a first embodiment. The folding machine consists of a rotary folding machine and a chopper folding machine. The printing paper (rolled paper) discharged from the fourth color printing unit is squeezed by a triangular plate 15, a nip roller 16, etc., and folded into two with the center line in the paper flow direction as a crease.
２つ折にされた用紙はロータリ折機に供給される。ロー
タリ折機は差込用１７、咥胴１８、受渡側１９からなる
折胴部を有する。差込用１７には差込用１７の回転に同
期して所定のタイミングで上下動し、差込用１７から突
出したり胴内に埋没したりする針２３が設けられている
。針２３は胴から突出した時に２つ折用紙の先端を刺し
、差込用１７の回転（図示矢印のように半時針方向）に
より２つ折用紙を差込用１７の周囲に巻き付ける。The paper folded into two is supplied to a rotary folding machine. The rotary folding machine has a folding body section consisting of an insertion body 17, a jaw cylinder 18, and a delivery side 19. The insert 17 is provided with a needle 23 that moves up and down at a predetermined timing in synchronization with the rotation of the insert 17, and that protrudes from the insert 17 or sinks into the body. When the needle 23 protrudes from the barrel, it pierces the tip of the two-fold paper, and the two-fold paper is wound around the insert 17 by rotation of the insert 17 (in the direction of the half-hour hand as shown by the arrow).
２つ折用紙が所定の角度だけ差込用１７の周囲に巻き付
けられると、差込用１７に配置されている差込刃２０と
咥胴１８に配置されている咥２１による咥折の働きによ
り流れ方向に直交する所定の折目を中心として４つ折に
される。その後、針２３が差込用１７内に埋没し、咥２
１によって折られた部分を加えた状態で４つ折用紙は瞳
側１８側に搬送される。その時、咥胴１８が所定の角度
だけ回転すると、咥胴１８に配置しである断裁刃２４と
差込用１７の受台２５によって４つ折用紙を所定の長さ
に切断し、折丁ｐを作る。さらに、その後、咥胴１８が
所定の回転角度だけ回転すると、咥胴１８と受渡側１９
が咥胴１８に咥えられている折丁ｐを受渡側１９に配置
しである爪２２に咥変えをする。When the bifold paper is wrapped around the insert 17 at a predetermined angle, it is folded by the insert blade 20 disposed on the insert 17 and the jaw 21 disposed on the jaw cylinder 18, causing the sheet to flow. It is folded into four around a predetermined fold orthogonal to the direction. After that, the needle 23 is buried in the insert 17, and the mouth 2
The four-folded paper is conveyed to the pupil side 18 with the folded portion 1 added thereto. At that time, when the jaw cylinder 18 rotates by a predetermined angle, the four-fold paper is cut into a predetermined length by the cutting blade 24 arranged on the jaw cylinder 18 and the holder 25 of the insert 17, and the signature p is make. Furthermore, after that, when the jaw cylinder 18 rotates by a predetermined rotation angle, the jaw cylinder 18 and the delivery side 19
The signature p held in the mouth barrel 18 is placed on the delivery side 19 and transferred to the claw 22.
その後、チョッパ折機の搬送ベルト５へ導入すベきタイ
ミングで爪２２は折丁ｐを咥えた状態から開放する。こ
れにより、ロータリ折機により４つ折にされた折丁ｐは
チョッパ折機に供給される。Thereafter, the claw 22 releases the signature p from its grip at the timing when the signature p should be introduced into the conveyor belt 5 of the chopper folding machine. As a result, the signature p folded into four by the rotary folding machine is supplied to the chopper folding machine.
折丁ｐはチョッパ折機の搬送ベルト５にはさまれた状態
でチョッパ折機の前当て４に当るまで搬送される。搬送
ベルト５はローラ７．８．９により駆動される。折丁ｐ
は２本対向しているニップローラ３間に押込まれ、チョ
ッパブレード２によって用紙の流れと平行に折られ、８
つ折の折丁ｐ′が得られる。この折丁ｐ′はニップロー
ラ８の下に設けられた羽根車１２によって一部ずつ下方
の搬送ベルト１３に乗せられる。この様な動きによって
折丁ｐ′は折機によって連続的に作り出される。The signature p is conveyed while being sandwiched between the conveyor belts 5 of the chopper folding machine until it hits the front stopper 4 of the chopper folding machine. The conveyor belt 5 is driven by rollers 7.8.9. signature p
is pushed between two opposing nip rollers 3, folded by the chopper blade 2 parallel to the paper flow, and 8
A folded signature p' is obtained. This signature p' is placed one portion at a time on a lower conveyor belt 13 by an impeller 12 provided below the nip roller 8. Due to this movement, signatures p' are continuously produced by the folding machine.
この実施例では、ロータリ折機からチョッパ折機に供給
される４つ折の折丁ｐを検査することにより、ロータリ
折（咥折）の良／不良を検出するとともに、チョッパ折
の良／不良を予測検出する。In this example, by inspecting the four-fold signature p supplied from the rotary folding machine to the chopper folding machine, it is possible to detect whether the rotary folding (mouth folding) is good or bad, and also whether the chopper folding is good or bad. Predictive detection.
チョッパ折機のチョッパテーブル１の上方には第２図に
示すように、正常な４つ折の折丁ｐの搬送方向における
左側端位置、右側端位置にそれぞれエツジセンサｉｏｏ
、 ｉｏｔが設けられている。エツジセンサ１００
、１０１は搬送方向の中心線の左右に対称に設けられて
いる。エツジセンサ１００゜１０１はチョッパ折の前当
て４から正常な折丁ｐの搬送長さｈより多少手前に設け
られている。エツジセンサ１００ 、１０１の出力が検
査装置本体１０に供給される。なお、エツジセンサ１０
０ 、１０１はエツジ位置を測定できればよく、アレイ
センサ、ラインセンサ等の一次元センサ、またはエリア
センサ、撮像素子等の二次元センサでもよい。さらには
、光学センサ以外でもよい。また、光学センサの場合、
照明光は反射光でも透過光でもよい。なお、折丁の大き
さは仕様により異なるので、エツジセンサ１００ 、１
０１はその折機で扱う全ての折丁の側端を検出できるよ
うな位置に配置されている。Above the chopper table 1 of the chopper folding machine, as shown in FIG.
, IoT is provided. Edge sensor 100
, 101 are provided symmetrically on the left and right sides of the center line in the transport direction. The edge sensor 100.degree. 101 is provided slightly before the conveyance length h of the normal signature p from the front stop 4 for chopper folding. The outputs of the edge sensors 100 and 101 are supplied to the inspection device main body 10. In addition, edge sensor 10
0 and 101 need only be able to measure edge positions, and may be one-dimensional sensors such as array sensors or line sensors, or two-dimensional sensors such as area sensors or image sensors. Furthermore, it may be other than an optical sensor. Also, in the case of optical sensors,
The illumination light may be reflected light or transmitted light. Note that the size of the signature differs depending on the specifications, so the edge sensor 100, 1
01 is placed at a position where it can detect the side edges of all signatures handled by the folding machine.
この実施例による折不良の検査動作を説明する。The inspection operation for folding defects according to this embodiment will be explained.
先ず、第３図、第４図を参照して原理を説明する。First, the principle will be explained with reference to FIGS. 3 and 4.
検査装置本体ｌＯは、折丁ｐが咥折終了後に搬送ベルト
５によってチョッパ折用の前当て４まで搬送される間に
、第３図に示すように、検査装置本体１０は後述するタ
イミング信号に基づいてエツジセンサ１００ 、１０１
からの画像信号ａＯ、ａｌ 、−。As shown in FIG. 3, the inspection device main body 10 receives a timing signal, which will be described later, while the signature p is conveyed by the conveyor belt 5 to the front cover 4 for chopper folding after the folding is completed. Edge sensor 100, 101 based on
The image signal aO,al,−.
ａｎ ； ｂＯ、ｂｌ 、 ・・、ｂｌをｎ回（数千回
）取込む。これにより、左右の側端エツジ位置（ｎ箇所
）と、両側端における搬送方向長さｈｌ、ｈ２を測定す
る。そして、各折丁についての測定値を基準値と比較す
ることにより次のように折不良が検査される。an; import bO, bl, ..., bl n times (several thousand times). As a result, the left and right side edge positions (n locations) and the lengths hl and h2 in the conveyance direction at both side edges are measured. Then, by comparing the measured value for each signature with a reference value, defective folding is inspected as follows.
第４図（ａ）は正常な折丁を示し、この場合の値が基準
値となる。同図（ｂ）は咥折の折目ｋが平行にずれた場
合、同図（ｃ）は咥折の折目ｋが曲がった場合、同図（
ｄ）はチョッパ折の折目Ｃが平行にずれる場合、同図（
ｅ）はチョッパ折の折目Ｃが曲がる場合、同図（ｆ）は
角折れが生じる場合の折丁を示す。第４図（ｂ）、（、
ｃ）に示すような咥折が不良の場合や、同図（ｅ）に示
すようなチョッパ折の折目が曲がる場合は、折丁ｐの搬
送方向の長さが基準長さと異なる。そのため、折丁ｐの
搬送方向の長さを測定し、それを基準値と比較すること
により、折不良を検出できる。同様に、角折れの場合も
、側端エツジにおける搬送方向の長さから検出できる。FIG. 4(a) shows a normal signature, and the value in this case becomes the reference value. The same figure (b) shows the case where the fold k of the mouth fold is shifted in parallel, and the figure (c) shows the case where the fold k of the mouth fold is bent (
d) is the same figure (
Figure e) shows a folded sheet in which the fold C of the chopper fold is bent, and Figure (f) shows a folded sheet in which a corner fold occurs. Figure 4(b), (,
If the folding is defective as shown in c), or if the chopper fold is bent as shown in FIG. Therefore, defective folding can be detected by measuring the length of the signature p in the conveying direction and comparing it with a reference value. Similarly, corner bends can also be detected from the length of the side edges in the conveyance direction.
また、第４図（ｄ）。Also, FIG. 4(d).
（ｅ）に示すようなチョッパ折が不良の場合や、同図（
ｃ）に示すような咥折の折目ｋが斜めにずれた場合は、
折丁ｐの側端エツジ位置が正常な場合の位置と異なる。If the chopper fold is defective as shown in (e) or
If the fold k of the mouth fold is shifted diagonally as shown in c),
The side edge position of signature p is different from the position when it is normal.
そのため、折丁ｐの側端エツジ位置を測定し、それを正
常な位置と比較することにより、折不良を検出できる。Therefore, by measuring the position of the side edge of the signature p and comparing it with a normal position, a folding defect can be detected.
このような原理に基づいた検出を行なう検査装置本体ｌ
Ｏの回路図を第５図に示す。折不良の検査は全ての折丁
ｐについて行なうため、エツジセンサ１００ 、１０１
は折機の最高速度に充分対応できる速度で常に動作して
いて、画像信号ＡＯ，Ａｔを出力している。ここでは、
エツジセンサ１００゜１０１はラインセンサであるとす
る。The main body of the inspection device that performs detection based on this principle
A circuit diagram of O is shown in FIG. In order to inspect all signatures p for folding errors, edge sensors 100 and 101 are used.
always operates at a speed sufficient to correspond to the maximum speed of the folding machine, and outputs image signals AO and At. here,
It is assumed that the edge sensors 100 and 101 are line sensors.
折丁ｐの先端がエツジセンサ１００ 、１０１に到達す
る直前に、メイン信号発生器２１０からメインタイミン
グ信号ＪＯが１つ発生される。その後、サブ信号発生器
２１１からメインタイミング信号Ｊ０よりも高い周波数
のサブタイミング信号Ｊｌが発生される。メイン信号発
生器２１０は１折丁につき１つのメインタイミング信号
ＪＯを発生するために１折丁につき１回転するローラ（
例えばローラ１６）に取付けられ、このローラの１回転
毎に１つメインタイミング信号ＪＯが発生される。サブ
タイミング信号Ｊｌは折機の速度に同期した等時間間隔
のパルスである。One main timing signal JO is generated from the main signal generator 210 immediately before the leading edge of the signature p reaches the edge sensors 100 and 101. Thereafter, the sub-signal generator 211 generates a sub-timing signal Jl having a higher frequency than the main timing signal J0. The main signal generator 210 includes a roller (
For example, it is attached to a roller 16), and one main timing signal JO is generated for each rotation of this roller. The sub-timing signal Jl is a pulse at equal time intervals synchronized with the speed of the folding machine.
エツジセンサ１００ 、１０１から出力された画像信号
ＡＯ，Ａｔがそれぞれエツジ位置検出部１１０゜１１１
に供給される。エツジ位置検出部ｔｔｏ 、 ｔｔｉは
サブタイミング信号Ｊ１画供給される毎に各画素毎の画
像信号ＡＯ，Ａｔを閾値と比較することにより、側端エ
ツジ位置を検出する。Image signals AO and At outputted from edge sensors 100 and 101 are sent to edge position detection units 110 and 111, respectively.
supplied to The edge position detection units tto and tti detect the side edge positions by comparing the image signals AO and At of each pixel with a threshold value every time one sub-timing signal J is supplied.
エツジ位置検出部１１０ 、１１１から発生されたエツ
ジ位置信号ＢＯ，Ｂｌは比較部１４０ 、１４１にそれ
ぞれ供給されるとともに、搬送方向長さ検出部１３０
、１３１にもそれぞれ供給される。搬送方向長さ検出部
１３０ 、１３１はエツジ位置信号ＢＯ，Ｂｌが供給さ
れている期間、サブタイミング信号Ｊｌを計数すること
により、折丁の搬送方向長さを検出する。搬送方向長さ
検出部１３０ 、１３１から発生された長さ信号ＦＯ，
Ｆｌは比較部１７０ 、１７１にそれぞれ供給される。The edge position signals BO and Bl generated from the edge position detection sections 110 and 111 are supplied to comparison sections 140 and 141, respectively, and the length detection section 130 in the transport direction
, 131, respectively. The conveyance direction length detection units 130 and 131 detect the length of the signature in the conveyance direction by counting the sub-timing signal Jl while the edge position signals BO and Bl are being supplied. Length signals FO, generated from conveyance direction length detection units 130 and 131,
Fl is supplied to comparators 170 and 171, respectively.
サブタイミング信号Ｊ１毎にエツジ位置検出部１１０
、 ｉｌｌから出力されるエツジ位置信号ＢＯ。Edge position detection unit 110 for each sub-timing signal J1
, the edge position signal BO output from ill.
Ｂ１はそれぞれ比較部１４０ 、１４１で第１基準値記
憶部２２０より出力された第１基準信号に１と比較され
、差に応じた信号が発生される。第１基準信号に１は折
丁の側端エツジ位置に対応した信号であり、折丁の大き
さに応じて設定される。比較部１４０ 、１４１の出力
ＤＯ，Ｄｉは判別部ｔｅａ 、 ｔｅｔに供給され°る
。B1 is compared with 1 by the first reference signal outputted from the first reference value storage section 220 in the comparators 140 and 141, respectively, and a signal corresponding to the difference is generated. The first reference signal 1 is a signal corresponding to the side edge position of the signature, and is set depending on the size of the signature. The outputs DO and Di of the comparators 140 and 141 are supplied to the discriminators tea and tet.
搬送方向長さ検出部１３０ 、１３１の出力ＦＯ。Output FO of conveyance direction length detection units 130 and 131.
Ｆｌは比較部１７０ 、１７１で第２基準値記憶部２２
１より出力された第２基準信号に２と比較され、差に応
じた信号が発生される。第２基準信号に２は折丁の搬送
方向長さに対応した信号であり、折丁の大きさに応じて
設定される。比較部１７０ 、１７１の出力ＨＯ，Ｈ１
は判別部１８０ 、１８１に供給される。Fl is stored in the second reference value storage unit 22 in the comparison units 170 and 171.
The second reference signal outputted from 1 is compared with 2, and a signal corresponding to the difference is generated. The second reference signal 2 is a signal corresponding to the length of the signature in the conveyance direction, and is set according to the size of the signature. Outputs HO and H1 of comparators 170 and 171
are supplied to the determination units 180 and 181.
判別部１ＢＱ 、 ｌｅｔ 、 １．８０ 、１８１は
各測定値と基準値との差が所定の許容値以下かどうかに
より折りが正常か不良かを判定し、折不良の場合は折不
良信号！０．Ｉｔ、１２．１３を表示部２００に供給す
る。この許容値は可変であり、折丁の折品質に対する要
求や検査の精度等により自由に設定できる。表示部２０
０はこれにより折不良を警告する。The determining unit 1BQ, let, 1.80, 181 determines whether the fold is normal or defective depending on whether the difference between each measured value and the reference value is less than a predetermined tolerance value, and in the case of defective folding, a defective fold signal! 0. It, 12.13 is supplied to the display section 200. This tolerance value is variable and can be freely set depending on the requirements for folding quality of signatures, inspection accuracy, etc. Display section 20
0 warns about folding errors.
ここで、エツジセンサ１００ 、１０１による側端エツ
ジ位置のａｐｌ定は多数（ｎ）箇所で行われているので
、側端の傾きも検出でき確実な検査が可能である。もし
、１ケ所のみしか検出しないとチョッパ折のずれは検出
できるが、チョッパ折または咥析の曲がりは検出できな
い場合もある。何故ならば、このようなチョッパ折また
は咥折の曲がりの場合は、測定をしているエツジの位置
が偶然に正常な折丁の位置と等しくなることがあるから
である。しかしながら、この実施例によればチョッパ折
のずれとともにチョッパ折または咥折の曲がりも確実に
検出できる。Here, since the apl determination of the side edge position by the edge sensors 100 and 101 is performed at a large number (n) locations, the inclination of the side edge can also be detected and reliable inspection is possible. If only one location is detected, a shift in the chopper fold can be detected, but a chopper fold or a bend in the jaw analysis may not be detected. This is because, in the case of chopper folding or lip folding, the position of the edge being measured may coincidentally be the same as the position of a normal signature. However, according to this embodiment, it is possible to reliably detect the deviation of chopper folds as well as the bending of chopper folds or mouth folds.
さらに、単に前端、後端エツジの位置を基準位置と比較
するのではなく、前後端エツジ位置の間隔（搬送方向長
さ）を求め、これを基準長さと比較しているのは、折丁
は静止しているのではなく移動しているので、前端エツ
ジと後端エツジの検出のタイミングのずれがあり、差を
取ることによりこれを補償できるからである。Furthermore, rather than simply comparing the front and rear edge positions with the reference position, the distance between the front and rear edge positions (length in the transport direction) is determined and this is compared with the reference length. This is because, since it is not stationary but moving, there is a timing difference between the detection of the leading edge and the trailing edge, and this can be compensated for by taking the difference.
なお、表示部２００での折不良の警告表示はチョッパ折
不良、咥折不良の場合でそれぞれ別の警告を発生しても
よい。また、警告態様としては表示に限らずブザー音や
ランプ点灯による報知でもよいし、さらに、警告のみな
らず不良の種類や発生回数に応じた情報信号を発生し、
折機の調整制御部にフィードバックして折機の自動調整
を行なわしたり、あるいは不良折丁にスプレーを吹付け
、不良折丁が誤って使用されないようにしてもよい。Note that the display unit 200 may display different warnings for folding defects in the case of chopper folding defects and in the case of jaw folding defects. In addition, the warning format is not limited to display, but may also include a buzzer sound or lamp lighting.Furthermore, in addition to warnings, information signals can be generated depending on the type of defect and the number of times it has occurred.
The folding machine may be automatically adjusted by feeding back to the adjustment control section of the folding machine, or a spray may be sprayed on the defective signatures to prevent them from being used by mistake.
このように、この実施例によればロータリ折機から排出
されチョッパ折機へ搬送される折丁の両側の側端のエツ
ジ位置を複数回検出するとともに、両側の側端における
搬送方向長さを検出し、これらを基準値と比較すること
により、折丁の折位置のずれや曲りを確実に検出できる
。In this way, according to this embodiment, the edge positions of both side edges of the signatures discharged from the rotary folding machine and conveyed to the chopper folding machine are detected multiple times, and the lengths in the conveying direction at both side edges are detected. By detecting these and comparing them with reference values, it is possible to reliably detect deviations and bends in the folding positions of signatures.
なお、この発明は上述した実施例に限定されず、各部の
詳細な構成等は種々変更可能である。例えば、基準値と
しては、あらかじめ計算により求めた値を用いたが、正
常な折丁の測定値を用いてもよい。Note that the present invention is not limited to the embodiments described above, and the detailed configuration of each part can be variously changed. For example, although a value calculated in advance is used as the reference value, a measured value of a normal signature may also be used.
以上説明したようにこの発明によれば、簡単な構成で各
種の折不良を精度良く検出でき、印刷物の品質の安定、
損紙の減少等に貢献できる折不良検査装置を提供できる
。As explained above, according to the present invention, various folding defects can be detected with high precision with a simple configuration, and the quality of printed matter can be stabilized.
It is possible to provide a folding defect inspection device that can contribute to reducing paper waste.
第１図はこの発明による折不良検査装置の一実施例が設
けられた輪転印刷機の折機の構成を示す概略図、第２図
はこの実施例におけるエツジセンサの配置を示す平面図
、第３図はこの実施例におけるエツジセンサの視野を示
す図、第４図（ａ）〜（ｆ）は折不良の種々の形態を示
す図、第５図はこの実施例の検査装置本体の回路構成を
示すブロック図である。
１・・・チョッパテーブル、２・・・チョッパブレード
、５・・・搬送ベルト、１０・・・検査装置本体、１５
・・・三角板、１７・・・差込み胴、１８・・・瞳側、
１９・・・受渡し胴、１００゜１０１・・・エツジセン
サ、１１０ 、１１１・・・エツジ位置検出部、１３０
、１３１・・・搬送方向長さ検出部、１４０゜１４１
、１７０ 、１７１・・・比較部、１８０ 、１６１
、１８０ 。
１８１・・・判定部、２００・・・表示部、２１０−・
・・メインタイミング信号発生器、２１１・・・サブタ
イミング信号発生器、２２０ 、２２１・・・基準値記
憶部。
出願人代理人 弁理士 鈴江武彦
第２図FIG. 1 is a schematic diagram showing the configuration of a folding machine of a rotary printing press equipped with an embodiment of the folding defect inspection device according to the present invention, FIG. 2 is a plan view showing the arrangement of edge sensors in this embodiment, and FIG. The figure shows the field of view of the edge sensor in this example, Figures 4 (a) to (f) show various forms of folding defects, and Figure 5 shows the circuit configuration of the inspection device main body in this example. It is a block diagram. DESCRIPTION OF SYMBOLS 1...Chopper table, 2...Chopper blade, 5...Transport belt, 10...Inspection device main body, 15
...triangular plate, 17...insertion body, 18...pupil side,
19... Delivery cylinder, 100° 101... Edge sensor, 110, 111... Edge position detection section, 130
, 131... Conveyance direction length detection unit, 140°141
, 170 , 171 ... comparison section, 180 , 161
, 180. 181... Judgment unit, 200... Display unit, 210-.
. . . Main timing signal generator, 211 . . . Sub timing signal generator, 220, 221 . . . Reference value storage unit. Applicant's agent Patent attorney Takehiko Suzue Figure 2
Claims (1)
丁の両側の側端位置に設けられた第１、第２エッジセン
サと、折機が１折丁を作るのに同期して１つのメインタ
イミング信号を発生する第１タイミング発生器と、折機
の動作速度に同期してメインタイミング信号より高周波
数のサブタイミング信号を発生する第２タイミング発生
器と、メインタイミング信号の１周期の間で前記第１、
第２エッジセンサが折丁の前端を検出してから折丁の後
端を検出するまでの時間間隔に応じて折丁の両側の側端
における搬送方向長さを検出する手段と、前記サブタイ
ミング信号毎に折丁の両側の側端エッジ位置を検出する
手段と、検出された前記搬送方向長さと側端エッジ位置
に応じて折り不良を検査する手段とを具備する折不良検
査装置。First and second edge sensors are installed at the side edges on both sides of the signatures discharged from the rotary folding machine and conveyed to the chopper folding machine, and one main edge sensor is installed in synchronization with the folding machine to make one signature. A first timing generator that generates a timing signal; a second timing generator that generates a sub-timing signal with a higher frequency than the main timing signal in synchronization with the operating speed of the folding machine; Said first,
means for detecting lengths in the conveying direction at both side edges of the signature according to a time interval from when the second edge sensor detects the leading edge of the signature to when the second edge sensor detects the trailing edge of the signature; and the sub-timing. A folding defect inspection device comprising: means for detecting side edge positions on both sides of a signature for each signal; and means for inspecting folding defects according to the detected length in the transport direction and side edge positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7417287A JPH0790945B2 (en) | 1987-03-30 | 1987-03-30 | Fold defect inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7417287A JPH0790945B2 (en) | 1987-03-30 | 1987-03-30 | Fold defect inspection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63242851A true JPS63242851A (en) | 1988-10-07 |
| JPH0790945B2 JPH0790945B2 (en) | 1995-10-04 |
Family
ID=13539471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7417287A Expired - Fee Related JPH0790945B2 (en) | 1987-03-30 | 1987-03-30 | Fold defect inspection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0790945B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342465A (en) * | 1989-07-10 | 1991-02-22 | Ricoh Co Ltd | Sheet folding quality judging device |
| JPH03272971A (en) * | 1990-03-20 | 1991-12-04 | Toshiba Mach Co Ltd | Chopper folding device |
| JPH0466158U (en) * | 1990-10-08 | 1992-06-10 | ||
| US5427366A (en) * | 1993-03-10 | 1995-06-27 | Kabushiki Kaisha Toshiba | Sheet feeding apparatus having adjustable gate rollers for correcting sheet skew |
| JPH09301628A (en) * | 1996-05-16 | 1997-11-25 | Mitsubishi Heavy Ind Ltd | Method and device for carrying sheet or the like for folder |
| US5918877A (en) * | 1995-06-16 | 1999-07-06 | Fujitsu Limited | Cut sheet feeding device having a function of detecting a skew of the sheet to be fed |
| JP2009091157A (en) * | 2007-09-20 | 2009-04-30 | Komori Corp | Device for and method of controlling strip-shaped material printing press |
| JP2009286538A (en) * | 2008-05-28 | 2009-12-10 | Komori Corp | Device for monitoring sheet-like object of device for conveying sheet-like object |
| EP2039638A3 (en) * | 2007-09-20 | 2010-03-17 | Komori Corporation | Control method and apparatus for strip-shaped material printing press |
| JP2011076087A (en) * | 2009-09-29 | 2011-04-14 | Xerox Corp | High resolution linear image sensing using multi-row low resolution image sensor |
-
1987
- 1987-03-30 JP JP7417287A patent/JPH0790945B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342465A (en) * | 1989-07-10 | 1991-02-22 | Ricoh Co Ltd | Sheet folding quality judging device |
| JPH03272971A (en) * | 1990-03-20 | 1991-12-04 | Toshiba Mach Co Ltd | Chopper folding device |
| JPH0466158U (en) * | 1990-10-08 | 1992-06-10 | ||
| US5427366A (en) * | 1993-03-10 | 1995-06-27 | Kabushiki Kaisha Toshiba | Sheet feeding apparatus having adjustable gate rollers for correcting sheet skew |
| US5443257A (en) * | 1993-03-10 | 1995-08-22 | Kabushiki Kaisha Toshiba | Sheet processing apparatus |
| US5918877A (en) * | 1995-06-16 | 1999-07-06 | Fujitsu Limited | Cut sheet feeding device having a function of detecting a skew of the sheet to be fed |
| JPH09301628A (en) * | 1996-05-16 | 1997-11-25 | Mitsubishi Heavy Ind Ltd | Method and device for carrying sheet or the like for folder |
| US5989175A (en) * | 1996-05-16 | 1999-11-23 | Mitsubishi Jukogyo Kabushiki Kaisha | Method and apparatus for conveying sheet etc. for a folding machine |
| JP2009091157A (en) * | 2007-09-20 | 2009-04-30 | Komori Corp | Device for and method of controlling strip-shaped material printing press |
| EP2039638A3 (en) * | 2007-09-20 | 2010-03-17 | Komori Corporation | Control method and apparatus for strip-shaped material printing press |
| EP3406553A1 (en) * | 2007-09-20 | 2018-11-28 | Komori Corporation | Control method and apparatus for strip-shaped material printing press |
| JP2009286538A (en) * | 2008-05-28 | 2009-12-10 | Komori Corp | Device for monitoring sheet-like object of device for conveying sheet-like object |
| JP2011076087A (en) * | 2009-09-29 | 2011-04-14 | Xerox Corp | High resolution linear image sensing using multi-row low resolution image sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0790945B2 (en) | 1995-10-04 |
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