JP2020183083A - Plate cylinder phase difference measuring device and plate cylinder phase difference measuring method - Google Patents
Plate cylinder phase difference measuring device and plate cylinder phase difference measuring method Download PDFInfo
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Abstract
Description
本発明は、版胴位相差測定装置及び版胴位相差測定方法に関する。 The present invention relates to a plate cylinder phase difference measuring device and a plate cylinder phase difference measuring method.
多色印刷を行うウエブ印刷装置では、各色の印刷を行う印刷ユニットに回転可能に支持された版胴を、ウエブに対して位置合わせ（以下、見当合わせという。）し、それぞれの版胴の外周面に付着したインキを順次ウエブに転写して印刷する。 In a web printing device that performs multicolor printing, a plate cylinder rotatably supported by a printing unit that prints each color is aligned with the web (hereinafter referred to as registration), and the outer circumference of each plate cylinder is used. The ink adhering to the surface is sequentially transferred to the web for printing.
印刷ユニットに版胴を取り付けた際の初期の見当合わせは、各版胴間の長さ、版胴円周長、ウエブの伸び量等を考慮して、印刷ユニットに支持された版胴を、所定の回転位置（角度）に設定することにより行われる。また、版胴の回転位置設定は、版胴の外周面に形成された印刷絵柄の基準位置となるトンボマーク、カラコンマーク等の基準マークが所定の回転位置となるように、版胴を回転させ、位相を変えることにより行われる。 The initial registration when the plate cylinder is attached to the printing unit is to consider the length between each plate cylinder, the circumference of the plate cylinder, the amount of elongation of the web, etc., and to select the plate cylinder supported by the printing unit. It is performed by setting a predetermined rotation position (angle). To set the rotation position of the plate cylinder, the plate cylinder is rotated so that the reference marks such as the dragonfly mark and the colored contact lens mark, which are the reference positions of the printed pattern formed on the outer peripheral surface of the plate cylinder, become the predetermined rotation positions. , By changing the phase.
一般的に、印刷装置の印刷ユニットは、円筒状の版胴の中心軸方向両端部に形成された支持孔に支持軸（版胴軸）を挿入して、版胴を支持する。また、版胴の支持孔に形成されたキー溝に、支持軸のキーが嵌入することにより、支持軸と版胴との角度合わせが行われる。印刷装置は、版胴の回転動作を制御する制御部を備えており、例えば、支持軸に形成されたキーの回転位置を検出することにより、支持軸の回転角度を認識する。 Generally, a printing unit of a printing apparatus supports a plate cylinder by inserting support shafts (plate cylinder shafts) into support holes formed at both ends in the central axial direction of a cylindrical plate cylinder. Further, the angle between the support shaft and the plate cylinder is adjusted by fitting the key of the support shaft into the key groove formed in the support hole of the plate cylinder. The printing device includes a control unit that controls the rotation operation of the plate cylinder, and recognizes the rotation angle of the support shaft by detecting the rotation position of the key formed on the support shaft, for example.
また、印刷ユニットは、予めキーの回転位置を原点とするように調整されており、支持軸に取り付けられたロータリーエンコーダによって、支持軸の回転位置を検出する。したがって、キーが嵌入するキー溝の回転位置と、版胴に印された基準マークの回転位置との差（以下、版胴位相差という。）を印刷装置の制御部で補正することにより、基準マークの回転位置を制御する。 Further, the printing unit is adjusted in advance so that the rotation position of the key is the origin, and the rotation position of the support shaft is detected by the rotary encoder attached to the support shaft. Therefore, the difference between the rotation position of the key groove into which the key is inserted and the rotation position of the reference mark marked on the plate cylinder (hereinafter referred to as plate cylinder phase difference) is corrected by the control unit of the printing apparatus to perform the reference. Control the rotation position of the mark.
しかしながら、版胴の支持孔に形成されるキー溝の位置と、版胴の外周面上に印される基準マークの位置との間の角度である版胴位相差は、版胴ごとに異なる。したがって、印刷装置に取り付けられた版胴を回転させ、基準マークを所定の回転位置に設定して見当合わせを行うには、版胴ごとの版胴位相差を測定する必要がある。 However, the plate cylinder phase difference, which is the angle between the position of the key groove formed in the support hole of the plate cylinder and the position of the reference mark marked on the outer peripheral surface of the plate cylinder, differs for each plate cylinder. Therefore, in order to rotate the plate cylinder attached to the printing device, set the reference mark at a predetermined rotation position, and perform registration, it is necessary to measure the plate cylinder phase difference for each plate cylinder.
版胴位相差の測定は、例えば、版胴を印刷ユニットに取り付けた状態で、指針等を用いてトンボマークが所定の位置となるように位置合わせを行い、その時のキー溝の回転位置を０にプリセットして、版胴の角度情報をメモリに記憶させることによって行われる（特許文献１）。 For the measurement of the plate cylinder phase difference, for example, with the plate cylinder attached to the printing unit, the registration mark is aligned so as to be in a predetermined position using a pointer or the like, and the rotation position of the keyway at that time is set to 0. This is done by presetting to and storing the angle information of the plate cylinder in the memory (Patent Document 1).
特許文献１の印刷装置では、印刷に初めて使用される版胴を、印刷ユニットに取り付けた状態で版胴位相差を測定するので、切替時間、すなわち版胴交換時の印刷装置の停止時間が長くなり、生産効率が低下する。また、基準マークの回転位置を位置合わせする指針等の装置が、各印刷ユニットに必要となる。 In the printing apparatus of Patent Document 1, since the plate cylinder phase difference is measured with the plate cylinder used for printing for the first time attached to the printing unit, the switching time, that is, the stop time of the printing apparatus at the time of plate cylinder replacement is long. Therefore, the production efficiency is reduced. In addition, each printing unit requires a device such as a pointer for aligning the rotation position of the reference mark.
本発明は、上述の事情に鑑みてなされたものであり、製版完成時等、版胴を印刷ユニットに取り付ける前に、容易に版胴位相差を測定でき、この位相差を前もって印刷装置に入力し、記憶させることにより、版胴交換時の印刷装置の停止時間を短くすることができる版胴位相差測定装置及び版胴位相差測定方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and the plate cylinder phase difference can be easily measured before the plate cylinder is attached to the printing unit, such as when plate making is completed, and this phase difference is input to the printing apparatus in advance. It is an object of the present invention to provide a plate cylinder phase difference measuring device and a plate cylinder phase difference measuring method capable of shortening the stop time of the printing apparatus at the time of plate cylinder replacement by storing the printing apparatus.
上記目的を達成するため、この発明の第１の観点に係る版胴位相差測定装置は、
版胴を中心軸まわりに回転可能な状態で載置する載置台と、
前記版胴に印された、印刷絵柄の基準位置を示す基準マークを、所定の回転位置に調整する回転角度調整手段と、
前記版胴に形成され、前記版胴を印刷ユニットに位置決め固定するキー溝の回転位置と前記基準マークの回転位置との間の角度を測定する角度測定手段と、を備え、
前記角度測定手段は、
前記版胴の中心軸方向の一方の端部に形成された支持孔へ挿入される挿入部と、
前記挿入部に形成されており、前記キー溝に嵌入するキー部と、
前記角度測定手段の中心軸まわりの回転角度を測定する角度計と、を有する。
In order to achieve the above object, the plate cylinder phase difference measuring device according to the first aspect of the present invention is
A mounting table on which the plate cylinder is placed so that it can rotate around the central axis,
A rotation angle adjusting means for adjusting a reference mark indicating a reference position of a printed pattern, which is marked on the plate cylinder, to a predetermined rotation position.
An angle measuring means for measuring an angle between a rotation position of a key groove formed on the plate cylinder and positioning and fixing the plate cylinder to the printing unit and a rotation position of the reference mark is provided.
The angle measuring means is
An insertion portion inserted into a support hole formed at one end in the central axial direction of the plate cylinder, and an insertion portion.
A key portion formed in the insertion portion and fitted into the key groove,
It has an angle meter that measures the rotation angle around the central axis of the angle measuring means.
また、前記回転角度調整手段は、
前記載置台に載置された前記版胴の中心軸に対して鉛直上方からレーザ光を照射する、
こととしてもよい。
Further, the rotation angle adjusting means is
A laser beam is radiated from vertically above the central axis of the plate cylinder placed on the above-mentioned stand.
It may be that.
また、前記角度計は、
前記キー溝の回転位置と前記基準マークの回転位置との相対角度を測定可能である、
こととしてもよい。
In addition, the angle meter
The relative angle between the rotation position of the keyway and the rotation position of the reference mark can be measured.
It may be that.
この発明の第２の観点に係る版胴位相差測定方法は、
版胴を中心軸まわりに回転可能な状態で載置し、
前記版胴に印された、印刷絵柄の基準位置を示す基準マークを、所定の回転位置に調整し、
前記版胴に形成され、前記版胴を印刷ユニットに位置決め固定するキー溝の回転位置と前記基準マークの回転位置との間の角度を測定する角度測定手段を、前記版胴を前記印刷ユニットに支持させるの支持孔に挿入して、前記キー溝の回転角度と前記基準マークの回転位置との間の角度を測定する。
The plate cylinder phase difference measuring method according to the second aspect of the present invention is
Place the plate cylinder in a rotatable state around the central axis,
The reference mark on the plate cylinder, which indicates the reference position of the printed pattern, is adjusted to a predetermined rotation position.
An angle measuring means for measuring an angle between the rotation position of the key groove formed on the plate cylinder and positioning and fixing the plate cylinder to the printing unit and the rotation position of the reference mark is provided to the printing unit. It is inserted into the support hole to be supported, and the angle between the rotation angle of the keyway and the rotation position of the reference mark is measured.
本発明によれば、版胴を印刷ユニットに取り付ける前に、容易に版胴位相差を測定できるので、版胴交換時の印刷装置の停止時間を短くし、生産効率を向上させることが可能である。 According to the present invention, since the plate cylinder phase difference can be easily measured before the plate cylinder is attached to the printing unit, it is possible to shorten the stop time of the printing apparatus at the time of plate cylinder replacement and improve the production efficiency. is there.
以下、図を参照しつつ、本発明の実施の形態に係る版胴位相差測定装置及び版胴位相差測定方法について説明する。 Hereinafter, the plate cylinder phase difference measuring device and the plate cylinder phase difference measuring method according to the embodiment of the present invention will be described with reference to the drawings.
本実施の形態に係る版胴位相差測定装置１は、図１及び図２に示すように、載置台１１、回転角度調整手段１２、角度測定手段１３を備える。 As shown in FIGS. 1 and 2, the plate cylinder phase difference measuring device 1 according to the present embodiment includes a mounting table 11, a rotation angle adjusting means 12, and an angle measuring means 13.
載置台１１は、版胴３０を載置する基台であり、ベースプレート１１ａ、保持ブロック１１ｂを備える。ベースプレート１１ａは矩形板状の部材であり、主面が上下方向となるように配置される。 The mounting table 11 is a base on which the plate cylinder 30 is placed, and includes a base plate 11a and a holding block 11b. The base plate 11a is a rectangular plate-shaped member, and is arranged so that the main surface is in the vertical direction.
保持ブロック１１ｂは、版胴３０の中心軸が水平方向となるように、載置台１１上に載置された版胴３０を保持する。保持ブロック１１ｂは、例えば図２に示すように、三角柱状の部材の一側面がベースプレート１１ａの上面に接するように、ベースプレート１１ａに取り付けられており、２つの保持ブロック１１ｂの斜面部が対向するように配置されている。 The holding block 11b holds the plate cylinder 30 mounted on the mounting table 11 so that the central axis of the plate cylinder 30 is in the horizontal direction. As shown in FIG. 2, the holding block 11b is attached to the base plate 11a so that one side surface of the triangular columnar member is in contact with the upper surface of the base plate 11a so that the slope portions of the two holding blocks 11b face each other. It is located in.
これにより、保持ブロック１１ｂは、Ｖブロックのように、対向する斜面部に版胴３０を載置することができる。したがって、様々な径の版胴３０を載置台１１上に載置することができる。また、図１に示すように、載置する版胴３０の中心軸方向に、対向する一対の保持ブロック１１ｂを複数配置することにより、版胴３０をより安定して載置することができる。 As a result, the holding block 11b can mount the plate cylinder 30 on the opposite slope portion like the V block. Therefore, plate cylinders 30 having various diameters can be placed on the mounting table 11. Further, as shown in FIG. 1, by arranging a plurality of pairing holding blocks 11b facing each other in the central axis direction of the plate cylinder 30 to be mounted, the plate cylinder 30 can be mounted more stably.
上記の例では、保持ブロック１１ｂの形状は三角柱状であることとしたが、特に限定されず、版胴３０を回転可能に載置できるものであればよい。例えば、版胴３０の載置方向と平行に回転可能に設置されたコロであってもよく、ベースプレート１１ａに立設する位置決めピンであってもよい。保持ブロック１１ｂに代えて、ベースプレート１１ａ上面に設置されたコロで版胴３０を支持する場合、版胴３０を容易に回転させることができる。 In the above example, the shape of the holding block 11b is triangular and columnar, but the shape is not particularly limited as long as the plate cylinder 30 can be rotatably placed. For example, it may be a roller rotatably installed in parallel with the mounting direction of the plate cylinder 30, or it may be a positioning pin erected on the base plate 11a. When the plate cylinder 30 is supported by rollers installed on the upper surface of the base plate 11a instead of the holding block 11b, the plate cylinder 30 can be easily rotated.
回転角度調整手段１２は、載置台１１に載置された版胴３０を版胴３０の中心軸まわりに回転させて、版胴３０の外周面に印された、印刷絵柄の基準位置を示す基準マークを所定の回転位置（角度）に調整するためのガイドである。本実施の形態に係る回転角度調整手段１２は、保持ブロック１１ｂの上方に配置されたレーザ照射装置である。 The rotation angle adjusting means 12 rotates the plate cylinder 30 mounted on the mounting table 11 around the central axis of the plate cylinder 30 to indicate a reference position of a printed pattern marked on the outer peripheral surface of the plate cylinder 30. This is a guide for adjusting the mark to a predetermined rotation position (angle). The rotation angle adjusting means 12 according to the present embodiment is a laser irradiation device arranged above the holding block 11b.
回転角度調整手段１２は、載置台１１に配置された、対向する一対の保持ブロック１１ｂの中間位置を通るように、直線状のレーザ光を照射する。具体的には、一対の保持ブロック１１ｂの中間位置となるベースプレート１１ａ上に、目安となる直線が印されている。そして目安となる直線と、回転角度調整手段１２から照射されるレーザ光とが一致するように、レーザ光の照射角度等が予め調整されている。 The rotation angle adjusting means 12 irradiates a linear laser beam so as to pass through an intermediate position between a pair of holding blocks 11b arranged on the mounting table 11. Specifically, a straight line as a guide is marked on the base plate 11a, which is an intermediate position between the pair of holding blocks 11b. Then, the irradiation angle of the laser beam and the like are adjusted in advance so that the straight line as a guide and the laser beam emitted from the rotation angle adjusting means 12 match.
したがって、載置台１１上に載置された版胴３０の中心軸の直上にレーザ光を照射することができる。これにより、図３に示すように、版胴３０の基準マークが、照射されたレーザ光と重なるように、版胴３０を中心軸まわりに回転させて、基準マークが最上部の位置となるように、版胴３０の回転角度を調整することができる。 Therefore, it is possible to irradiate the laser beam directly above the central axis of the plate cylinder 30 mounted on the mounting table 11. As a result, as shown in FIG. 3, the plate cylinder 30 is rotated around the central axis so that the reference mark of the plate cylinder 30 overlaps with the irradiated laser beam so that the reference mark is at the uppermost position. In addition, the rotation angle of the plate cylinder 30 can be adjusted.
角度測定手段１３は、版胴３０に形成され、版胴３０を印刷ユニットに位置決め固定するキー溝３０ａの回転位置と基準マークの回転位置との間の角度である版胴位相差を測定するものであり、図４に示すように、挿入部１３ａ、キー部１３ｂ、角度計１３ｃを備える。ここで、キー溝３０ａの回転位置とは、キー溝３０ａの幅方向中心の回転角度である。 The angle measuring means 13 measures the plate cylinder phase difference, which is an angle between the rotation position of the key groove 30a formed on the plate cylinder 30 and positioning and fixing the plate cylinder 30 to the printing unit and the rotation position of the reference mark. As shown in FIG. 4, the insertion portion 13a, the key portion 13b, and the angle meter 13c are provided. Here, the rotation position of the key groove 30a is a rotation angle at the center of the key groove 30a in the width direction.
挿入部１３ａは、円柱状の角度測定手段１３の一方の端部に形成されたテーパ部であり、図５に示すように、版胴３０の中心軸方向端部に形成された、版胴３０を印刷ユニットに支持させる支持孔に挿入される。支持孔には、テーパ部３０ｂが形成されており、挿入された角度測定手段１３と版胴３０とが同一中心軸となるように固定される。 The insertion portion 13a is a tapered portion formed at one end of the columnar angle measuring means 13, and as shown in FIG. 5, the plate cylinder 30 is formed at the central axial end of the plate cylinder 30. Is inserted into the support hole that supports the printing unit. A tapered portion 30b is formed in the support hole, and the inserted angle measuring means 13 and the plate cylinder 30 are fixed so as to have the same central axis.
キー部１３ｂは、テーパ部である挿入部１３ａに形成されたキーであり、図５に示すように、版胴３０のテーパ部３０ｂに形成されたキー溝３０ａに嵌入して、角度測定手段１３の版胴３０に対する回転位置を位置決めする。 The key portion 13b is a key formed in the insertion portion 13a which is a tapered portion, and is fitted into the key groove 30a formed in the tapered portion 30b of the plate cylinder 30 as shown in FIG. 5, and the angle measuring means 13 Position the rotation position with respect to the plate cylinder 30.
角度計１３ｃは、角度測定手段１３の挿入部１３ａと反対側の端部に配置された角度測定器であり、測定位置の鉛直方向に対する傾きを示す。角度計１３ｃは、例えば、一般的なデジタル角度計（シンワ測定株式会社、デジタルアングルメーター ミニ マグネット付 ７６４４７）であり、キー部１３ｂの中心、より具体的には、キー部１３ｂの幅方向中心が、角度計１３ｃの測定位置となるように、配置されている。 The angle meter 13c is an angle measuring instrument arranged at an end portion of the angle measuring means 13 opposite to the insertion portion 13a, and indicates an inclination of the measuring position with respect to the vertical direction. The angle meter 13c is, for example, a general digital angle meter (Shinwa Rules Co., Ltd., digital angle meter with mini magnet 76447), and the center of the key portion 13b, more specifically, the center in the width direction of the key portion 13b. , It is arranged so as to be the measurement position of the angle meter 13c.
これにより、角度測定手段１３の測定位置であるキー部１３ｂの中心軸まわりの回転角度を測定することができる。 Thereby, the rotation angle around the central axis of the key portion 13b, which is the measurement position of the angle measuring means 13, can be measured.
続いて、本実施の形態に係る版胴位相差測定装置１を用いた版胴位相差測定方法について説明する。 Subsequently, a plate cylinder phase difference measuring method using the plate cylinder phase difference measuring device 1 according to the present embodiment will be described.
まず、版胴位相差の測定対象となる版胴３０を、版胴位相差測定装置１の載置台１１に載置する。載置台１１に配置されている保持ブロック１１ｂにより、版胴３０は、中心軸が略水平方向となるように載置される。 First, the plate cylinder 30 for which the plate cylinder phase difference is to be measured is placed on the mounting table 11 of the plate cylinder phase difference measuring device 1. The plate cylinder 30 is placed so that the central axis is substantially horizontal by the holding block 11b arranged on the mounting table 11.
続いて、図１及び図２に示すように、載置台１１に載置された版胴３０の外周面上に、円柱形頂点指示水準器ＣＬを設置する。そして、円柱形頂点指示水準器ＣＬを用いて、版胴３０が水平に設置されていることを確認する。版胴３０が水平に載置されていない場合、ベースプレート１１ａの四隅に配置されたアジャスタ１１ｃを用いて、載置台１１の角度を調整して版胴３０を水平にする。これにより、版胴位相差をより精度よく測定することができる。 Subsequently, as shown in FIGS. 1 and 2, a cylindrical vertex level indicator CL is installed on the outer peripheral surface of the plate cylinder 30 mounted on the mounting table 11. Then, it is confirmed that the plate cylinder 30 is installed horizontally by using the cylindrical vertex level indicator CL. When the plate cylinder 30 is not placed horizontally, the plate cylinder 30 is made horizontal by adjusting the angle of the mounting table 11 by using the adjusters 11c arranged at the four corners of the base plate 11a. As a result, the plate cylinder phase difference can be measured more accurately.
続いて、回転角度調整手段１２のレーザ照射装置の電源を投入して版胴３０にレーザ光を照射する。回転角度調整手段１２からのレーザ光は、鉛直上方から版胴３０の中心軸へ照射されるように予め調整されているので、レーザ光は、版胴３０の頂部の直線上に照射される。 Subsequently, the power of the laser irradiation device of the rotation angle adjusting means 12 is turned on to irradiate the plate cylinder 30 with the laser beam. Since the laser beam from the rotation angle adjusting means 12 is adjusted in advance so as to be emitted from vertically above the central axis of the plate cylinder 30, the laser light is emitted on a straight line on the top of the plate cylinder 30.
版胴３０は、版胴３０の外周面に印された基準マークが、直線状のレーザ光に重なるように手動で回転される。これにより、版胴３０は、基準マークが鉛直上方の位置になるように、位置決めされる。 The plate cylinder 30 is manually rotated so that the reference mark marked on the outer peripheral surface of the plate cylinder 30 overlaps with the linear laser beam. As a result, the plate cylinder 30 is positioned so that the reference mark is located vertically above.
続いて、角度測定手段１３が、版胴３０の一方の端部に形成されたキー溝３０ａを有するテーパ部３０ｂに挿入される。この時、角度測定手段１３は、角度測定手段１３の測定位置となるキー部１３ｂが版胴３０のキー溝３０ａに嵌入する回転位置で、版胴３０へ挿入される。 Subsequently, the angle measuring means 13 is inserted into the tapered portion 30b having the key groove 30a formed at one end of the plate cylinder 30. At this time, the angle measuring means 13 is inserted into the plate cylinder 30 at a rotational position where the key portion 13b, which is the measurement position of the angle measuring means 13, fits into the key groove 30a of the plate cylinder 30.
図６に示すように、角度測定手段１３の角度計１３ｃは、キー溝３０ａの回転位置と同じ、キー部１３ｂの回転位置である角度を示す。したがって、角度計１３ｃの示す角度を読みとることにより、版胴３０の版胴位相差、すなわち、版胴３０を印刷ユニットに位置決め固定するキー溝３０ａの回転位置と基準マークの回転位置との間の角度を測定することができる。 As shown in FIG. 6, the angle meter 13c of the angle measuring means 13 indicates an angle which is the same as the rotation position of the key groove 30a and the rotation position of the key portion 13b. Therefore, by reading the angle indicated by the angle meter 13c, the plate cylinder phase difference of the plate cylinder 30, that is, between the rotation position of the key groove 30a for positioning and fixing the plate cylinder 30 to the printing unit and the rotation position of the reference mark. The angle can be measured.
版胴位相差が測定された版胴３０を印刷ユニットに取り付ける際、印刷装置の制御部に測定済みの版胴位相差を入力することにより、制御部は、検出可能なキーの回転位置と、入力された版胴位相差とに基づいて版胴３０を回転させて、見当合わせをすることができる。 When the plate cylinder 30 on which the plate cylinder phase difference has been measured is attached to the printing unit, the measured plate cylinder phase difference is input to the control unit of the printing apparatus, so that the control unit can detect the rotation position of the key and the rotation position of the key. The plate cylinder 30 can be rotated based on the input plate cylinder phase difference to make a register.
また、版胴３０の識別番号と測定された版胴位相差との組み合わせ情報を、印刷装置の制御部、印刷装置がネットワークを介して接続されたサーバの記憶装置等に、予め記憶させておくことにより、繰り返し、版胴３０を交換して使用する場合であっても、効率的に切替作業を行うことができる。 Further, the combination information of the identification number of the plate cylinder 30 and the measured plate cylinder phase difference is stored in advance in the control unit of the printing device, the storage device of the server to which the printing device is connected via the network, and the like. As a result, even when the plate cylinder 30 is repeatedly used by exchanging the plate cylinder 30, the switching operation can be efficiently performed.
以上、詳細に説明したように、本実施の形態に係る版胴位相差測定装置１及びこれを用いた版胴位相差測定方法では、版胴３０を印刷ユニットに取り付ける前に、容易に版胴位相差を測定できるので、版胴交換時の印刷装置の停止時間を短くし、生産効率を向上させることが可能である。 As described in detail above, in the plate cylinder phase difference measuring device 1 and the plate cylinder phase difference measuring method using the plate cylinder phase difference measuring device 1 according to the present embodiment, the plate cylinder 30 can be easily attached to the printing unit before the plate cylinder 30 is attached to the printing unit. Since the phase difference can be measured, it is possible to shorten the downtime of the printing apparatus when replacing the plate cylinder and improve the production efficiency.
また、印刷ユニットに版胴３０を取り付けた状態で版胴位相差を測定する場合、基準マークの回転位置を設定するための指針等を各印刷ユニットに取り付ける必要がある。すなわち、版胴位相差測定の基準が、印刷ユニットごとに異なる。これにより、各印刷ユニットで印刷位置がばらつくおそれがある。しかしながら、本実施の形態に係る版胴位相差測定装置１及びこれを用いた版胴位相差測定方法では、各印刷ユニットに取り付ける版胴３０について、共通の基準で版胴位相差を測定することができるので、各印刷ユニットの見当合わせの精度を高めることが可能である。 Further, when measuring the plate cylinder phase difference with the plate cylinder 30 attached to the printing unit, it is necessary to attach a pointer or the like for setting the rotation position of the reference mark to each printing unit. That is, the standard for measuring the plate cylinder phase difference differs for each printing unit. As a result, the printing position may vary in each printing unit. However, in the plate cylinder phase difference measuring device 1 and the plate cylinder phase difference measuring method using the plate cylinder phase difference measuring device 1 according to the present embodiment, the plate cylinder phase difference is measured by a common standard for the plate cylinder 30 attached to each printing unit. Therefore, it is possible to improve the accuracy of registering each printing unit.
本実施の形態に係る回転角度調整手段１２は、レーザ照射装置であることとしたが、これに限られず、版胴３０の基準マークを所定の位置に調整可能な構成であればよい。 The rotation angle adjusting means 12 according to the present embodiment is a laser irradiation device, but the present invention is not limited to this, as long as the reference mark of the plate cylinder 30 can be adjusted to a predetermined position.
また、本実施の形態では、基準マークは、版胴３０の外周面上に印されていることとしたが、これに限られない。例えば、中心軸方向の一方の端面に印されていることとしてもよい。この場合、回転角度調整手段１２は、基準マークが印された端面の上下方向にレーザ光を照射する等、基準マークが鉛直上方に位置するようにガイド可能なものであればよい。 Further, in the present embodiment, the reference mark is marked on the outer peripheral surface of the plate cylinder 30, but the present invention is not limited to this. For example, it may be marked on one end face in the central axis direction. In this case, the rotation angle adjusting means 12 may be capable of guiding the reference mark so that it is located vertically above, such as by irradiating a laser beam in the vertical direction of the end face marked with the reference mark.
また、本実施の形態では、回転角度調整手段１２を用いて、基準マークの回転位置を鉛直上方に調整することとしたが、これに限られず、基準マークを、測定基準となる任意の回転位置に調整することとしてもよい。この場合、キー溝３０ａの回転位置と基準マークの回転位置との相対角度を測定可能な角度計１３ｃを用いて、版胴位相差を測定すればよい。 Further, in the present embodiment, the rotation angle adjusting means 12 is used to adjust the rotation position of the reference mark vertically upward, but the present invention is not limited to this, and the reference mark can be used as an arbitrary rotation position as a measurement reference. It may be adjusted to. In this case, the plate cylinder phase difference may be measured by using an angle meter 13c capable of measuring the relative angle between the rotation position of the key groove 30a and the rotation position of the reference mark.
１ 版胴位相差測定装置、１１ 載置台、１１ａ ベースプレート、１１ｂ 保持ブロック、１１ｃ アジャスタ、１２ 回転角度調整手段、１３ 角度測定手段、１３ａ 挿入部、１３ｂ キー部、１３ｃ 角度計、３０ 版胴、３０ａ キー溝、３０ｂ テーパ部、ＣＬ 円柱形頂点指示水準器 1 Plate cylinder phase difference measuring device, 11 mounting table, 11a base plate, 11b holding block, 11c adjuster, 12 rotation angle adjusting means, 13 angle measuring means, 13a insertion part, 13b key part, 13c angle meter, 30 plate cylinder, 30a Keyway, 30b taper, CL cylindrical vertex level
Claims (4)
前記版胴に印された、印刷絵柄の基準位置を示す基準マークを、所定の回転位置に調整する回転角度調整手段と、
前記版胴に形成され、前記版胴を印刷ユニットに位置決め固定するキー溝の回転位置と前記基準マークの回転位置との間の角度を測定する角度測定手段と、を備え、
前記角度測定手段は、
前記版胴の中心軸方向の一方の端部に形成された支持孔へ挿入される挿入部と、
前記挿入部に形成されており、前記キー溝に嵌入するキー部と、
前記角度測定手段の中心軸まわりの回転角度を測定する角度計と、を有する、
ことを特徴とする版胴位相差測定装置。 A mounting table on which the plate cylinder is placed so that it can rotate around the central axis,
A rotation angle adjusting means for adjusting a reference mark indicating a reference position of a printed pattern, which is marked on the plate cylinder, to a predetermined rotation position.
An angle measuring means for measuring an angle between a rotation position of a key groove formed on the plate cylinder and positioning and fixing the plate cylinder to the printing unit and a rotation position of the reference mark is provided.
The angle measuring means is
An insertion portion inserted into a support hole formed at one end in the central axial direction of the plate cylinder, and an insertion portion.
A key portion formed in the insertion portion and fitted into the key groove,
It has an angle meter that measures the rotation angle around the central axis of the angle measuring means.
A plate cylinder phase difference measuring device characterized by this.
前記載置台に載置された前記版胴の中心軸に対して鉛直上方からレーザ光を照射する、
ことを特徴とする請求項１に記載の版胴位相差測定装置。 The rotation angle adjusting means is
A laser beam is radiated from vertically above the central axis of the plate cylinder placed on the above-mentioned stand.
The plate cylinder phase difference measuring device according to claim 1.
前記キー溝の回転位置と前記基準マークの回転位置との相対角度を測定可能である、
ことを特徴とする請求項１又は２に記載の版胴位相差測定装置。 The angle meter
The relative angle between the rotation position of the keyway and the rotation position of the reference mark can be measured.
The plate cylinder phase difference measuring device according to claim 1 or 2.
前記版胴に印された、印刷絵柄の基準位置を示す基準マークを、所定の回転位置に調整し、
前記版胴に形成され、前記版胴を印刷ユニットに位置決め固定するキー溝の回転位置と前記基準マークの回転位置との間の角度を測定する角度測定手段を、前記版胴を前記印刷ユニットに支持させるの支持孔に挿入して、前記キー溝の回転角度と前記基準マークの回転位置との間の角度を測定する、
ことを特徴とする版胴位相差測定方法。 Place the plate cylinder in a rotatable state around the central axis,
The reference mark indicating the reference position of the printed pattern, which is marked on the plate cylinder, is adjusted to a predetermined rotation position.
An angle measuring means for measuring an angle between the rotation position of the key groove formed on the plate cylinder and positioning and fixing the plate cylinder to the printing unit and the rotation position of the reference mark is provided to the printing unit. Insert it into the support hole to be supported and measure the angle between the rotation angle of the keyway and the rotation position of the reference mark.
A plate cylinder phase difference measuring method characterized by this.
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