JPH04344245A - Keyless inking device - Google Patents
Keyless inking deviceInfo
- Publication number
- JPH04344245A JPH04344245A JP3117626A JP11762691A JPH04344245A JP H04344245 A JPH04344245 A JP H04344245A JP 3117626 A JP3117626 A JP 3117626A JP 11762691 A JP11762691 A JP 11762691A JP H04344245 A JPH04344245 A JP H04344245A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- ink
- doctor
- delivery
- slip
- 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.)
- Withdrawn
Links
- 230000002093 peripheral effect Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は輪転印刷機のキーレスイ
ンキング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 keyless inking device for a rotary printing press.
【０００２】0002
【従来の技術】図３に新聞輪転印刷機の両面墨刷ユニツ
ト（以下印刷ユニツト）に設けられたキーレスインキン
グ装置と駆動装置とを示す。キーレスインキング装置２
０は、インキ溜１、このインキ溜１のインキを圧送する
インキポンプ２、インキポンプ２よりのインキをインキ
元ローラ５に噴射するインキノズル３、インキ元ローラ
５の噴射されたインキを掻取り均一被膜にするドクター
４、超低速にて回転しているインキ元ローラ５、このイ
ンキ元ローラ５と当接し印刷ユニツトの版胴１１の周速
ｖと同じ速度にて回転している受渡しローラ６、この受
渡しローラ６と当接し周速ｖにて回転しているドクター
ローラ７、ドクターローラ７と版胴１１に当接し、版胴
１１にインキを供給するインキ着ローラ８と９、および
版胴１１の版の画線部に一部インキを取去られたインキ
着ローラ８と９上のインキ（履歴インキ）をドクターロ
ーラ７に転移させた後、掻き取るドクター１０、より構
成されていて、インキ元ローラ５のインキは実線矢印の
供給経路を通ってインキ着ローラ８と９に供給され、イ
ンキ着ローラ８と９の履歴インキは破線矢印の履歴経路
を通ってインキ元ローラ５に戻される。2. Description of the Related Art FIG. 3 shows a keyless inking device and a drive device provided in a double-sided ink printing unit (hereinafter referred to as printing unit) of a newspaper rotary printing machine. Keyless inking device 2
0 is an ink reservoir 1, an ink pump 2 that pumps ink from this ink reservoir 1, an ink nozzle 3 that sprays ink from the ink pump 2 onto an ink source roller 5, and an ink that scrapes off the ink jetted from the ink source roller 5. A doctor 4 that forms a uniform coating, an ink source roller 5 that rotates at an extremely low speed, and a delivery roller 6 that contacts this ink source roller 5 and rotates at the same speed as the circumferential speed v of the plate cylinder 11 of the printing unit. , a doctor roller 7 that is in contact with the delivery roller 6 and rotating at a circumferential speed v, ink forming rollers 8 and 9 that are in contact with the doctor roller 7 and the plate cylinder 11 and supplies ink to the plate cylinder 11, and a plate cylinder. The ink on the ink forming rollers 8 and 9 (history ink) from which part of the ink has been removed in the printing area of the printing plate No. 11 is transferred to the doctor roller 7 and then scraped off by the doctor 10. The ink on the ink source roller 5 is supplied to the ink form rollers 8 and 9 through the supply path indicated by the solid line arrow, and the history ink on the ink form rollers 8 and 9 is returned to the ink source roller 5 through the history path shown by the broken line arrow. .
【０００３】また図２に示すように、一例として版胴１
１の周速ｖを１０ｍ／ｓとすると、受渡しローラ６およ
びインキ元ローラ５の周速はそれぞれ１０ｍ／ｓおよび
０．０２５ｍ／ｓとなっている。したがってインキ元ロ
ーラ５と受渡しローラ６との間ではスリツプによりイン
キ転移が行われている。一方、図３の印刷ユニツトにお
いて、版胴１１の歯車は、メインモータ１３にて駆動さ
れるラインシヤフト１４、駆動歯車箱１５、縦軸１６及
び一対の傘歯車１７を介して駆動されていて、ブランケ
ツト胴１２、キーレスインキング装置２０のドクターロ
ーラ７、受渡しローラ６は、版胴１１の歯車よりギヤー
トレーンを介して駆動されている。また反対側のブラン
ケツト胴１２′、版胴１１′及びキーレスインキング装
置２０′もメインモータ１３、ラインシヤフト１４を介
して同様に駆動される版胴１１′よりギヤートレーンを
介して駆動される。Further, as shown in FIG. 2, as an example, a plate cylinder 1
If the circumferential speed v of the ink roller 1 is 10 m/s, the circumferential speeds of the transfer roller 6 and ink source roller 5 are 10 m/s and 0.025 m/s, respectively. Therefore, ink transfer is performed between the ink source roller 5 and the transfer roller 6 by the slip. On the other hand, in the printing unit of FIG. 3, the gears of the plate cylinder 11 are driven via a line shaft 14 driven by a main motor 13, a drive gear box 15, a vertical shaft 16, and a pair of bevel gears 17. The blanket cylinder 12, the doctor roller 7 of the keyless inking device 20, and the delivery roller 6 are driven by gears of the plate cylinder 11 via a gear train. Further, the blanket cylinder 12', the plate cylinder 11', and the keyless inking device 20' on the opposite side are also driven by the plate cylinder 11', which is similarly driven via the main motor 13 and line shaft 14, via a gear train.
【０００４】0004
【発明が解決しようとする課題】キーレスインキング装
置を有する印刷ユニツトの全消費動力を１００％とする
と、インキ元ローラ５と受渡しローラ６との間でのスリ
ツプによるインキ転移に消費される動力（スリツプ動力
）は約３０％と高い割合を占めている。よってスリツプ
動力を少なくすることが印刷ユニツトの全消費動力を減
少するのに大いに役立つ。[Problems to be Solved by the Invention] If the total power consumption of a printing unit having a keyless inking device is 100%, the power consumed for ink transfer due to slip between the ink source roller 5 and the delivery roller 6 ( Slip power) accounts for a high proportion of approximately 30%. Therefore, reducing the slip power goes a long way in reducing the total power consumption of the printing unit.
【０００５】本発明は全消費動力を減少させたキーレス
インキング装置を有する輪転印刷機の印刷ユニツトを提
供することを目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a printing unit for a rotary printing press having a keyless inking device with reduced total power consumption.
【０００６】[0006]
【課題を解決するための手段】キーレスインキング装置
を有する印刷ユニツトの全消費動力を減少させるには、
スリツプ動力を減少させねばならない。このため（１）
従来のインキ元ローラと受渡しローラとの間で行われて
いる１段のスリツプによるインキ転移を、インキ元ロー
ラと受渡しローラとの間、および受渡しローラとドクタ
ーローラとの間にて行う２段のスリツプによるインキ転
移とする。
（２）この場合受渡しローラの周速をドクターローラの
周速ｖの１／２とする。SUMMARY OF THE INVENTION To reduce the total power consumption of a printing unit having a keyless inking device,
Slip power must be reduced. For this reason (1)
The conventional one-stage slip ink transfer between the ink source roller and the delivery roller has been replaced with a two-stage slip between the ink source roller and the delivery roller, and between the delivery roller and the doctor roller. Ink transfer by slip. (2) In this case, the peripheral speed of the delivery roller is set to 1/2 of the peripheral speed v of the doctor roller.
【０００７】[0007]
【作用】スリツプ動力をＰ、ローラ間の当接面積をＡ、
両ローラ間の速度差をΔｖとすると、Ｐ∝Ａ・（Δｖ）
２ 従って上式をもとに動力低減効果及び最大効果を生
む速度差について試算する。
Ｐ０ ：従来のスリツプ動力
Ｐ１ ：本発明の受渡しローラとインキ元ローラ間のス
リツプ動力
Ｐ２ ：本発明の受渡しローラとドクターローラ間のス
リツプ動力
ｘ：版胴に対する受渡しローラの速度比ΔＰ：動力低減
量
今、版胴周速を１０ｍ／ｓ、インキ元ローラ周速を０．
０２５ｍ／ｓとする時[Effect] Slip power is P, contact area between rollers is A,
If the speed difference between both rollers is Δv, then P∝A・(Δv)
2. Therefore, based on the above formula, the speed difference that produces the power reduction effect and the maximum effect will be estimated. P0: Conventional slip power P1: Slip power between the delivery roller and ink source roller of the present invention P2: Slip power between the delivery roller and doctor roller of the present invention x: Speed ratio of the delivery roller to the plate cylinder ΔP: Power reduction amount Now, the plate cylinder circumferential speed is 10 m/s, and the ink source roller circumferential speed is 0.
025m/s
【０００８】[0008]
【数１】
速度比ｘと動力低減率ΔＰ／Ｐ０ の関係を図４に示す
。
この結果、ｘ＝２、つまり受渡しローラの周速を版胴の
１／２にする条件が最大の効果を示すことがわかる。[Equation 1] The relationship between the speed ratio x and the power reduction rate ΔP/P0 is shown in FIG. As a result, it can be seen that x=2, that is, the condition in which the peripheral speed of the delivery roller is set to 1/2 that of the plate cylinder exhibits the greatest effect.
【０００９】[0009]
【実施例】図１に本発明による印刷ユニツトのキーレス
インキング装置のドクターローラ７、受渡しローラ６お
よびインキ元ローラ５の周速（前述例）とドクターロー
ラ７と受渡しローラ６の実線矢印で示す供給側と破線矢
印で示す履歴側のインキの被膜の厚みを示す。[Example] Fig. 1 shows the circumferential speeds of the doctor roller 7, delivery roller 6 and ink source roller 5 of the keyless inking device of the printing unit according to the present invention (the above example) and the solid line arrows of the doctor roller 7 and the delivery roller 6. The thickness of the ink film on the supply side and the history side indicated by the dashed arrow is shown.
【００１０】印刷ユニツトとこの印刷ユニツトのインキ
ング装置２０、および駆動装置は図３と同一である。但
し受渡しローラ６は版胴１１、周速ｖの１／２の周速に
て回転する。よって前述の周速例に従って各ローラの速
度を表示すると、インキ元ローラ５は０．０２５ｍ／ｓ
、受渡しローラ６は５ｍ／ｓ、及びドクターローラ７は
１０ｍ／ｓとなる。インキ元ローラ５と受渡しローラ６
間、および受渡しローラ６とドクターローラ７間におけ
る２段スリツプによるスリツプ動力は、前記作用の項で
算出したように、従来の１段スリツプによるスリツプ動
力の半分となっている（印刷ユニツト全消費動力では約
１５％減）。The printing unit and its inking device 20 and drive are the same as in FIG. However, the delivery roller 6 rotates at a circumferential speed that is 1/2 of the circumferential speed v of the plate cylinder 11. Therefore, if the speed of each roller is displayed according to the above-mentioned circumferential speed example, the ink source roller 5 is 0.025 m/s.
, the transfer roller 6 has a speed of 5 m/s, and the doctor roller 7 has a speed of 10 m/s. Ink source roller 5 and delivery roller 6
As calculated in the section above, the slip power generated by the two-stage slip between the transfer roller 6 and the doctor roller 7 is half the slip power generated by the conventional single-stage slip (the total power consumed by the printing unit). (approximately 15% reduction).
【００１１】次に、ドクターローラ７の供給側のインキ
膜厚は４μ（ドクタ１０にて掻取られたあとの履歴側の
インキ膜厚は３μになるようにしてある）とするために
、従来は、図２の受渡しローラ６の供給側のインキ膜厚
が５μになるようにインキ元ローラ５よりのインキ供給
量をドクタ４等にて調整している。このようにすると、
ドクターローラ７の供給側及び受渡しローラ６の履歴側
に、それぞれ４μづつの被膜が転移する（等量転位理論
による）。一方、本発明の図１では、ドクターローラ７
の供給側のインキ膜厚を４μにするために、受渡しロー
ラ６の供給側のインキ膜厚は１０μになるようにインキ
元ローラ５よりのインキ供給量を前述の方法で調整する
。この場合受渡しローラ６の履歴側のインキ膜厚ｔは８
μとなる（等量転位法で３ｖ＋１０×１／２ｖ＝４ｖ＋
ｔ×１／２ｖによってｔ＝８）。この８μの膜厚により
履歴側のローラの軸方向の履歴むら（凹凸）は従来の受
渡しローラ６の履歴側のインキ膜厚４μに比し、著しく
減少する。尚、ドクターローラ７の供給側のインキ膜厚
が４〜５μの時良好な印刷が行われる。Next, in order to set the ink film thickness on the supply side of the doctor roller 7 to 4μ (the ink film thickness on the history side after being scraped off by the doctor 10 is 3μ), the conventional The ink supply amount from the ink source roller 5 is adjusted by a doctor 4 or the like so that the ink film thickness on the supply side of the delivery roller 6 in FIG. 2 is 5 μm. In this way,
A film of 4 microns is transferred to each of the supply side of the doctor roller 7 and the history side of the delivery roller 6 (according to the theory of equal displacement). On the other hand, in FIG. 1 of the present invention, the doctor roller 7
In order to make the ink film thickness on the supply side of the transfer roller 6 4μ, the amount of ink supplied from the ink source roller 5 is adjusted by the method described above so that the ink film thickness on the supply side of the transfer roller 6 becomes 10μ. In this case, the ink film thickness t on the history side of the delivery roller 6 is 8
μ (3v+10×1/2v=4v+ using the isoquantal dislocation method)
t=8 by t×1/2v). With this film thickness of 8μ, the history unevenness (unevenness) in the axial direction of the roller on the history side is significantly reduced compared to the ink film thickness of 4μ on the history side of the conventional transfer roller 6. Note that good printing is achieved when the ink film thickness on the supply side of the doctor roller 7 is 4 to 5 microns.
【００１２】0012
【発明の効果】本発明は、輪転印刷機のキーレスインキ
ング装置において、インキ元ローラ、受渡しローラ及び
ドクターローラの周速度をインキ元ローラ＜受渡しロー
ラ＜ドクターローラとしたことにより、次の効果を有す
る。Effects of the Invention The present invention provides the following effects by setting the circumferential speeds of the ink source roller, delivery roller, and doctor roller to be ink source roller < delivery roller < doctor roller in a keyless inking device of a rotary printing press. have
【００１３】ドクターローラと受渡しローラ、および受
渡しローラとインキ元ローラの間で、これらローラ間の
速度差によって生ずるスリツプにより、インキ転移が２
回発生し、スリツプ動力が低減され、印刷ユニツトの全
消費動力も減少する。また受渡しローラの周速をドクタ
ーローラの周速の１／２とすると、スリツプ動力は最小
（半減）となる。更に上述の２段スリツプによるインキ
転移により、受渡しローラの履歴側の膜厚を厚くするこ
とが出来、このローラの軸方向における履歴むらを著し
く減少することが可能となる。[0013] Between the doctor roller and the transfer roller, and between the transfer roller and the ink source roller, the ink transfer is caused by the slip caused by the speed difference between these rollers.
times, the slip power is reduced and the total power consumption of the printing unit is also reduced. Further, if the peripheral speed of the delivery roller is set to 1/2 of the peripheral speed of the doctor roller, the slip power becomes minimum (halved). Further, due to the ink transfer by the two-stage slip described above, the film thickness on the hysteresis side of the transfer roller can be increased, and it becomes possible to significantly reduce hysteresis unevenness in the axial direction of this roller.
【図１】本発明によるキーレスインキング装置における
各ローラの周速およびインキ膜厚を示す側面図である。FIG. 1 is a side view showing the circumferential speed and ink film thickness of each roller in a keyless inking device according to the present invention.
【図２】従来のキーレスインキング装置における各ロー
ラの周速およびインキ膜厚を示す側面図である。FIG. 2 is a side view showing the peripheral speed and ink film thickness of each roller in a conventional keyless inking device.
【図３】印刷ユニツト（両面墨刷ユニツト）のキーレス
インキング装置と駆動装置を示す側面図である。FIG. 3 is a side view showing the keyless inking device and drive device of the printing unit (double-sided black printing unit).
【図４】版胴に対する受渡しローラの速度比ｘと動力低
減率ΔＰ／Ｐ０ との関係を示す線図である。FIG. 4 is a diagram showing the relationship between the speed ratio x of the delivery roller to the plate cylinder and the power reduction rate ΔP/P0.
５ インキ元ローラ ６ 受渡しローラ ７ ドクターローラ 5 Ink source roller 6 Delivery roller 7 Doctor Laura
Claims (1)
インキ元ローラ、受渡しローラ及びドクターローラの周
速度をインキ元ローラ＜受渡しローラ＜ドクターローラ
としたことを特徴とするキーレスインキング装置。[Claim 1] In a printing unit of a rotary printing press,
A keyless inking device characterized in that the circumferential speeds of the ink source roller, the delivery roller, and the doctor roller are such that the ink source roller < the delivery roller < the doctor roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3117626A JPH04344245A (en) | 1991-05-22 | 1991-05-22 | Keyless inking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3117626A JPH04344245A (en) | 1991-05-22 | 1991-05-22 | Keyless inking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04344245A true JPH04344245A (en) | 1992-11-30 |
Family
ID=14716393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3117626A Withdrawn JPH04344245A (en) | 1991-05-22 | 1991-05-22 | Keyless inking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04344245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997025210A1 (en) * | 1996-01-11 | 1997-07-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Ink feeder of printing press and ink scraper |
-
1991
- 1991-05-22 JP JP3117626A patent/JPH04344245A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997025210A1 (en) * | 1996-01-11 | 1997-07-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Ink feeder of printing press and ink scraper |
| US5979319A (en) * | 1996-01-11 | 1999-11-09 | Mitsubishi Jukogo Kabushiki Kaisha | Ink feeder of a printing press and ink scraper with separated ink guide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980806 |