JPH04270659A - Dampening arrangement in rotary press - Google Patents
Dampening arrangement in rotary pressInfo
- Publication number
- JPH04270659A JPH04270659A JP3033060A JP3306091A JPH04270659A JP H04270659 A JPH04270659 A JP H04270659A JP 3033060 A JP3033060 A JP 3033060A JP 3306091 A JP3306091 A JP 3306091A JP H04270659 A JPH04270659 A JP H04270659A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- water
- dampening water
- dampening
- needle
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000007921 spray Substances 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Rotary Presses (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、例えば新聞紙用オフセ
ット輪転印刷機の湿し水供給装置におけるスプレー式湿
し装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray type dampening device used in a dampening water supply device for, for example, a newspaper offset rotary printing press.
【０００２】0002
【従来の技術】図５にスプレー式湿し装置の配置図を示
す。湿し水タンク１４内の湿し水２０は、制御装置１７
により版面に必要な水量に調整され、スプレーバー３０
の先端に装着された複数のノズル３１により噴射される
。ノズル３１より噴射した湿し水は、巾方向に揺動でき
る水往復ローラ５に付着し、水着けローラ６を介して、
版胴１に装着されている版２へと転移し、版面上に水膜
を形成して、非画線部へインキが付着するのを防止する
。2. Description of the Related Art FIG. 5 shows a layout of a spray type dampening device. The dampening water 20 in the dampening water tank 14 is controlled by the control device 17.
The amount of water required for the printing plate is adjusted by the spray bar 30.
It is sprayed by a plurality of nozzles 31 attached to the tip of the. The dampening water sprayed from the nozzle 31 adheres to the water reciprocating roller 5 that can swing in the width direction, passes through the dampening roller 6, and
The ink transfers to the plate 2 mounted on the plate cylinder 1, forms a water film on the plate surface, and prevents ink from adhering to non-image areas.
【０００３】スプレーの方式には、種々あるか、例えば
実開昭６３−９７５４２ 号公報に示されるものでは、
図６に示すごとく、噴霧ノズル手段４１と、該ノズル手
段４１にパイプ４２により連結した貯水槽４３と、輪転
機印刷速度検知手段からの電気信号により電一空変換し
て、該貯水槽４３内の気圧を制御するための圧力制御手
段４４とから成り立っている。この方式は、輪転機印刷
速度に対応した電気信号により、該貯水槽４３の気圧を
制御して、噴霧ノズル手段からの供給水量を制御するも
のである。図６において、４６は噴霧用空気源、４７は
ニードル弁４５のＯＮ・ＯＦＦ制御をする制御手段であ
る。[0003] There are various spraying methods. For example, the method shown in Japanese Utility Model Application No. 63-97542 is
As shown in FIG. 6, a spray nozzle means 41, a water storage tank 43 connected to the nozzle means 41 through a pipe 42, and an electric signal from a rotary press printing speed detection means are used to convert electricity into air. It consists of a pressure control means 44 for controlling atmospheric pressure. In this method, the air pressure of the water storage tank 43 is controlled by an electric signal corresponding to the printing speed of the rotary press, and the amount of water supplied from the spray nozzle means is controlled. In FIG. 6, 46 is an air source for spraying, and 47 is a control means for controlling ON/OFF of the needle valve 45.
【０００４】0004
【発明が解決しようとする課題】前述の従来技術による
と、オフセット輪転機の印刷速度に対応して最適量の湿
し水を供給することが困難であり、これが印刷物の品質
に悪影響を与える等の問題点がある。本発明は上記の問
題点を解決した湿し水供給装置を提供することを目的と
するものである。[Problems to be Solved by the Invention] According to the above-mentioned prior art, it is difficult to supply an optimal amount of dampening water in accordance with the printing speed of the rotary offset press, and this adversely affects the quality of printed matter. There is a problem with this. An object of the present invention is to provide a dampening water supply device that solves the above problems.
【０００５】[0005]
【課題を解決するための手段】図１に湿すように、減圧
弁１６を介して圧縮空気を湿し水タンク１４に導入して
、湿し水１８の水圧を一定に保持する。このようにして
一定の水圧に保持された湿し水１８をノズル２０から水
往復ローラ５に対して、同ノズル２０内に導入された噴
霧用圧縮空気により噴霧する。[Means for Solving the Problems] As shown in FIG. 1, compressed air is introduced into the dampening water tank 14 through a pressure reducing valve 16 to maintain the water pressure of the dampening water 18 constant. The dampening water 18 thus maintained at a constant water pressure is sprayed from the nozzle 20 onto the water reciprocating roller 5 by compressed air for spray introduced into the nozzle 20 .
【０００６】ノズル２０からの湿し水の噴霧に際して、
Ｍ／Ｃ速度に対応した湿し水量の調整を、ノズル１０内
に内蔵された先端先細のニードルの位置をかえることに
より行う。Ｍ／Ｃ速度が検出できる回転計１３等の電気
信号により回転角をかえるステップモータ等により、ネ
ジこみの原理でニードル弁を水平方向に動かす。ニード
ル弁の先細先端が、水噴出口の中を移動することにより
、流出面積を可変とし、噴霧量を調節する。When spraying dampening water from the nozzle 20,
The amount of dampening water is adjusted in accordance with the M/C speed by changing the position of a needle with a tapered tip built into the nozzle 10. The needle valve is moved horizontally on the screw-in principle by a step motor or the like whose rotation angle is changed by an electric signal from a tachometer 13 or the like that can detect the M/C speed. The tapered tip of the needle valve moves within the water spout to vary the outflow area and adjust the amount of spray.
【０００７】[0007]
【作用】常にＭ／Ｃ速度と対応して、連続的に湿し水の
供給量をかえることができる。[Function] The supply amount of dampening water can be changed continuously in accordance with the M/C speed.
【０００８】[0008]
【実施例】本発明の実施例を図１乃至図４について説明
する。図において、１は版胴、２は版、３は圧胴、４は
インキ着けローラ、５は水往復ローラ、６は水着けロー
ラ、１０はノズル、１１は回転装置、１１ａ、１１ｂは
シャフト、１１ｃは回転キャップ、１２は回転計、１３
は制御装置、１４は湿し水タンク、１５はイオン交換装
置又は純水装置、１６，１７は減圧弁、１８は湿し水、
２０はニードル、２１はノズル本体、２２は水流路、２
３はＯリング、２４は押え治具、２５ａは湿し水供給口
、２５ｂは圧縮空気供給口、２６はノズル本体２１及び
回転装置１１の支持部材、２７は回転キャップ１１ｃと
押え治具２４を螺合するネジ、２８はシャフト１１ａと
シャフト１１ｂを一体的に回転するように連結するスラ
イドカプリングである。Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 4. In the figure, 1 is a plate cylinder, 2 is a plate, 3 is an impression cylinder, 4 is an ink forming roller, 5 is a water reciprocating roller, 6 is a water forming roller, 10 is a nozzle, 11 is a rotating device, 11a, 11b are shafts, 11c is a rotating cap, 12 is a tachometer, 13
is a control device, 14 is a dampening water tank, 15 is an ion exchange device or a pure water device, 16 and 17 are pressure reducing valves, 18 is a dampening water,
20 is a needle, 21 is a nozzle body, 22 is a water flow path, 2
3 is an O-ring, 24 is a holding jig, 25a is a dampening water supply port, 25b is a compressed air supply port, 26 is a support member for the nozzle body 21 and the rotating device 11, and 27 is a rotating cap 11c and a holding jig 24. The threaded screw 28 is a slide coupling that connects the shaft 11a and the shaft 11b so that they rotate together.
【０００９】図１は輪転機湿し装置の全体構成を湿すも
ので、版胴１に装着されている版２、該版胴に接触して
隣接した水着けローラ６、及び水着けローラ６に接触し
て隣接し巾方向の揺動が可能な水往復ローラ５等を具え
る。版２に必要な湿し水１８は、イオン交換装置又は純
水装置１５を経て水質中の硬度成分を低減させて湿し水
タンク１４に導かれる。湿し水タンク１４には、圧縮空
気を減圧弁１６により減圧して一定の圧力に保持された
空気圧がかかっており、この圧力が駆動圧となって湿し
水１８がノズル１０へ供給される。尚、インキは、本図
では示していないインキ供給装置より、インキ着けロー
ラ４への供給されて、版へ供給される。FIG. 1 shows the overall structure of a rotary press dampening device, which includes a plate 2 mounted on a plate cylinder 1, a dampening roller 6 adjacent to and in contact with the printing cylinder, and a dampening roller 6. It is provided with a water reciprocating roller 5, etc., which is in contact with and adjacent to the roller and can swing in the width direction. The dampening water 18 necessary for the plate 2 is led to the dampening water tank 14 through an ion exchange device or a pure water device 15 to reduce hardness components in the water. The dampening water tank 14 has air pressure maintained at a constant pressure by reducing the pressure of compressed air with a pressure reducing valve 16, and this pressure becomes the driving pressure to supply the dampening water 18 to the nozzle 10. . Incidentally, ink is supplied to the ink form roller 4 from an ink supply device not shown in this figure, and then supplied to the plate.
【００１０】一方、圧縮空気は減圧弁１７を介して一定
の圧力に保持され、噴霧用圧縮空気としてノズル１０に
供給される。次に、図２，図３を参照してノズル１０の
構造を具体的に説明する。先細状のニードル２０が、同
ニードル２０と同様に先端側ほど先細の水流路２２中に
挿入される。このニードル２０の基端は回転キャップ１
１ｃに固定される。フレーム等に支持部材２６で固定さ
れたステップモータ等の回転装置１１のシャフト１１ａ
と回転キャップ１１ｃのシャフト１１ｂの間は、ギヤカ
ップリングのようなこれ等のシャフト１１ａ，１１ｂの
軸方向移動を許容するカップリング２８により連結され
る。回転キャップ１１ｃは、内面に施したネジ２７によ
り、外面にネジ２７を有するＯリング押え治具２４と連
結している。このＯリング押え治具２４は、Ｏリング２
３を押えると共にフレーム等に支持部材２６により固定
されたノズル本体２１と溶接等によりつながっている。
このような装置において、制御装置１３からの例えば回
転数又は回転角相当の信号に応じて、回転装置１１が回
ると、その回転シャフト１１ａにより回転キャップ１１
ｃが回る。On the other hand, the compressed air is maintained at a constant pressure via a pressure reducing valve 17 and is supplied to the nozzle 10 as compressed air for spraying. Next, the structure of the nozzle 10 will be specifically explained with reference to FIGS. 2 and 3. A tapered needle 20 is inserted into a water flow path 22 which, like the needle 20, is tapered toward the distal end. The base end of this needle 20 is connected to the rotating cap 1.
It is fixed at 1c. A shaft 11a of a rotating device 11 such as a step motor fixed to a frame etc. with a support member 26
and the shaft 11b of the rotary cap 11c are connected by a coupling 28, such as a gear coupling, which allows the shafts 11a, 11b to move in the axial direction. The rotary cap 11c is connected to an O-ring holding jig 24 having a screw 27 on the outer surface by a screw 27 provided on the inner surface. This O-ring holding jig 24 is a
3 and is connected by welding or the like to a nozzle body 21 which is fixed to a frame or the like by a support member 26. In such a device, when the rotating device 11 rotates in response to a signal corresponding to the number of rotations or rotation angle from the control device 13, the rotating shaft 11a rotates the rotating cap 11.
c turns.
【００１１】回転キャップ１１ｃの回転により、フレー
ム固定されたＯリング押え治具２４に対して、回転キャ
ップ１１ｃは図２の左右方向に移動することとなる。従
って回転キャップ１１ｃに連結したニードル２０は、回
転キャップ１１ｃの動きに応じて左右方向に動くことが
できる。従って、水流路２２先端部の流路断面積が変化
し、噴出水量が調節される。このようにして、湿し水供
給量をＭ／Ｃ速度に応じて連続的変化させることができ
る。As the rotary cap 11c rotates, the rotary cap 11c moves in the left-right direction in FIG. 2 with respect to the O-ring holding jig 24 fixed to the frame. Therefore, the needle 20 connected to the rotary cap 11c can move in the left-right direction according to the movement of the rotary cap 11c. Therefore, the cross-sectional area of the water flow path 22 at its tip changes, and the amount of water ejected is adjusted. In this way, the amount of dampening water supplied can be continuously changed according to the M/C speed.
【００１２】実用に際しては、このようなノズルを水往
復ローラ５の巾方向に沿って複数個設置する必要があり
、その具体例を図３に示す。In practical use, it is necessary to install a plurality of such nozzles along the width direction of the water reciprocating roller 5, and a specific example thereof is shown in FIG.
【００１３】[0013]
【発明の効果】本発明は、輪転印刷機におけるスプレー
を用いた湿し水供給装置において、ニードルを内蔵し湿
し水と圧縮空気の供給を受けてスプレーを形成するノズ
ルと、前記ニードルを軸方向に移動させてノズルからの
噴出水量を調節するニードル駆動機構と、印刷機の回転
速度の検出器と、回転速度から必要湿し水量を求めニー
ドル駆動機構を動かす制御装置とを具え、印刷機の回転
速度に応じた量の湿し水を前記ノズルから噴出するよう
にしたことにより、次の効果を有する。輪転印刷機の印
刷速度に対応して湿し水の供給量が連続的に変化するの
で、印刷品質が向上する。Effects of the Invention The present invention provides a dampening water supply device using a spray for a rotary printing press, which includes a nozzle that has a built-in needle and receives dampening water and compressed air to form a spray, and a nozzle that has a built-in needle that forms a spray by receiving dampening water and compressed air. The printing machine is equipped with a needle drive mechanism that adjusts the amount of water ejected from the nozzle by moving it in the direction, a detector for the rotation speed of the printing press, and a control device that determines the required amount of dampening water from the rotation speed and moves the needle drive mechanism. By spouting dampening water from the nozzle in an amount corresponding to the rotational speed of the nozzle, the following effects can be obtained. Printing quality is improved because the amount of dampening water supplied changes continuously in response to the printing speed of the rotary printing press.
【図１】本発明の実施例を示す全体構成図である。FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.
【図２】図１におけるノズル部分の詳細断面図である。FIG. 2 is a detailed sectional view of the nozzle portion in FIG. 1;
【図３】図２のＡ−Ａ矢視図である。FIG. 3 is a view taken along the line AA in FIG. 2;
【図４】水往復ローラに対するノズルの配列を示す平面
図である。FIG. 4 is a plan view showing the arrangement of nozzles on a water reciprocating roller.
【図５】従来装置の全体構成図である。FIG. 5 is an overall configuration diagram of a conventional device.
【図６】従来のスプレー用ノズル部分の概略図である。FIG. 6 is a schematic diagram of a conventional spray nozzle portion.
１ 版胴 ３ 圧胴 ５ 水往復ローラ １０ ノズル １１ 回転装置 １２ 回転計 １３ 制御装置 1 Plate cylinder 3 Impression cylinder 5 Water reciprocating roller 10 Nozzle 11 Rotating device 12 Tachometer 13 Control device
Claims (1)
湿し水供給装置において、ニードルを内蔵し湿し水と圧
縮空気の供給を受けてスプレーを形成するノズルと、前
記ニードルを軸方向に移動させてノズルからの噴出水量
を調節するニードル駆動機構と、印刷機の回転速度の検
出器と、回転速度から必要湿し水量を求めニードル駆動
機構を動かす制御装置とを具え、印刷機の回転速度に応
じた量の湿し水を前記ノズルから噴出するようにしたこ
とを特徴とする輪転機の湿し装置。1. A dampening water supply device using a spray for a rotary printing press, comprising: a nozzle having a built-in needle that receives dampening water and compressed air to form a spray; and a nozzle that forms a spray by moving the needle in an axial direction. It is equipped with a needle drive mechanism that adjusts the amount of water ejected from the nozzle, a detector for the rotation speed of the printing press, and a control device that determines the required amount of dampening water from the rotation speed and moves the needle drive mechanism. A dampening device for a rotary press, characterized in that a corresponding amount of dampening water is ejected from the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3033060A JPH04270659A (en) | 1991-02-27 | 1991-02-27 | Dampening arrangement in rotary press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3033060A JPH04270659A (en) | 1991-02-27 | 1991-02-27 | Dampening arrangement in rotary press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04270659A true JPH04270659A (en) | 1992-09-28 |
Family
ID=12376203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3033060A Pending JPH04270659A (en) | 1991-02-27 | 1991-02-27 | Dampening arrangement in rotary press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04270659A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0705688A1 (en) * | 1994-09-19 | 1996-04-10 | Rockwell International Corporation | Dampening system for a printing press |
| JP2007313788A (en) * | 2006-05-26 | 2007-12-06 | Sunrise Company Ltd | On-spec water manufacturing device for offset printing |
| JP2009179058A (en) * | 2008-01-29 | 2009-08-13 | Heidelberger Druckmas Ag | Apparatus and method for preparing dampening water for offset printing press |
| JP2013035284A (en) * | 2011-08-05 | 2013-02-21 | Palo Alto Research Center Inc | Method for direct application of dampening fluid for variable data lithographic apparatus |
| JP2013035286A (en) * | 2011-08-05 | 2013-02-21 | Palo Alto Research Center Inc | Direct application of dampening fluid for variable data lithographic apparatus |
-
1991
- 1991-02-27 JP JP3033060A patent/JPH04270659A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0705688A1 (en) * | 1994-09-19 | 1996-04-10 | Rockwell International Corporation | Dampening system for a printing press |
| JP2007313788A (en) * | 2006-05-26 | 2007-12-06 | Sunrise Company Ltd | On-spec water manufacturing device for offset printing |
| JP4552150B2 (en) * | 2006-05-26 | 2010-09-29 | 株式会社サンライズカンパニー | Proper water production system for offset printing |
| JP2009179058A (en) * | 2008-01-29 | 2009-08-13 | Heidelberger Druckmas Ag | Apparatus and method for preparing dampening water for offset printing press |
| JP2013035284A (en) * | 2011-08-05 | 2013-02-21 | Palo Alto Research Center Inc | Method for direct application of dampening fluid for variable data lithographic apparatus |
| JP2013035286A (en) * | 2011-08-05 | 2013-02-21 | Palo Alto Research Center Inc | Direct application of dampening fluid for variable data lithographic apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19981222 |