JPH0259348A - Web fouling prevention device - Google Patents
Web fouling prevention deviceInfo
- Publication number
- JPH0259348A JPH0259348A JP20952188A JP20952188A JPH0259348A JP H0259348 A JPH0259348 A JP H0259348A JP 20952188 A JP20952188 A JP 20952188A JP 20952188 A JP20952188 A JP 20952188A JP H0259348 A JPH0259348 A JP H0259348A
- Authority
- JP
- Japan
- Prior art keywords
- web
- vortex
- air
- air blowing
- ink solvent
- 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
- 230000002265 prevention Effects 0.000 title claims description 11
- 238000007664 blowing Methods 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 18
- 239000010410 layer Substances 0.000 abstract description 13
- 239000002344 surface layer Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 15
- 238000007639 printing Methods 0.000 description 11
- 239000000428 dust Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、ウェブの汚れ防止や付着物の除去を行なうウ
ェブ汚損防止装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a web stain prevention device for preventing web stains and removing deposits.
く背景技術と課題〉
オフセット輪転印刷機の一例を第３図に示す。ウェブ（
巻取紙）１は給紙装置２により送り出され、４台の印刷
ユニット３ａ、３ｂ。Background technology and issues> Figure 3 shows an example of a rotary offset printing press. web(
A roll of paper) 1 is sent out by a paper feeder 2, and is sent to four printing units 3a, 3b.
３ｃ、３ｄにより表裏面に印刷がなされ、ドライヤー４
に入ってウェブ１及びインキの乾燥がなされ、次いで冷
却装置５で冷却され、最後に折機６で折られて製品（印
刷物）とされる。Printing is done on the front and back sides by 3c and 3d, and dryer 4
The web 1 and the ink are dried, then cooled by a cooling device 5, and finally folded by a folding machine 6 to form a product (printed material).
ところで、このような印刷機におけるドライヤー４の出
口においては、乾燥したインキの溶剤が溶剤浮遊層（排
煙）となってウェブ１と共に連れ出される。このような
インキ溶剤がウェブ表層としである場合に、ウェブ１が
そのまま冷却装置５に入って、クーリゾグロール７に巻
き掛けられると、インキ溶剤が冷却により再凝縮されて
、ウェブ１の印刷面を汚損したり、クーリングロール７
を汚したりするなどの問題が起きる。By the way, at the outlet of the dryer 4 in such a printing press, the solvent of the dried ink becomes a suspended solvent layer (exhaust smoke) and is taken out together with the web 1. When such an ink solvent is used as the surface layer of the web, when the web 1 enters the cooling device 5 as it is and is wrapped around the Coolizoglol 7, the ink solvent is recondensed by cooling and the printed surface of the web 1 is or soil the cooling roll 7.
Problems such as contamination may occur.
最近では印刷機をより高速化することが図られているが
、高速化すると、ドライヤー４からウェブ１と共に引き
出されるインキ溶剤量が多くなって、上記汚損等がより
顕著となる。Recently, efforts have been made to increase the speed of printing presses, but as the speed increases, the amount of ink solvent drawn out from the dryer 4 along with the web 1 increases, making the above-mentioned staining etc. more noticeable.
ウェブ印刷面の汚れや不良は上記のような浮遊インキ溶
剤に起因するだけでなく、給紙の段階でウェブに紙粉や
その他のほこり等が付着している基台にも生ずる。Contamination and defects on the printing surface of the web are not only caused by the floating ink solvent as described above, but also occur on the base where paper powder and other dust adhere to the web during the paper feeding stage.
本発明は、このような技術的状況にかんがみ、ウェブの
汚れ防止、付着物の除去等を企図してなされたものであ
る。The present invention has been made in view of such technical circumstances, with the aim of preventing web stains, removing deposits, etc.
く課題を解決するための手段〉
上記課題を解決するため本発明では、ウェブの面にエア
を吹き付けてウェブの移動経路に湾曲部を形成するエア
吹き出し手段をウェブの表裏面側の少な（とも−下側に
設けると共に、ウェブの湾曲部にウェブの進行方向と逆
向きのエアを吹き付けて湾曲部に渦流を発生させる渦流
生起手段を湾曲部の近傍に設けてウェブ汚損防止装置を
構成したのである。Means for Solving the Problems> In order to solve the above problems, in the present invention, air blowing means for blowing air onto the surface of the web to form a curved portion in the moving path of the web is provided on the front and back sides of the web. - The web fouling prevention device is constructed by providing a vortex generation means on the lower side and near the curved portion of the web, which blows air in the opposite direction to the traveling direction of the web to generate a vortex in the curved portion. be.
く作 用〉
このウェブ汚損防止装置では、ウェブの移動経路に湾曲
部を作り、湾曲部に進行方向と逆向きのエアを吹き付け
て湾曲部に渦流を生じさせるようにしたので、ウェブ表
層のインキ溶剤層あるいは付着物は渦流に巻き込まれて
剥離除去される。Function: In this web stain prevention device, a curved section is created in the moving path of the web, and air is blown in the direction opposite to the traveling direction onto the curved section to create a vortex flow in the curved section, so that the ink on the surface layer of the web is The solvent layer or deposits are drawn into the vortex and peeled off.
く実 施 例〉
第１図には本発明の一実施例に係るつニブ汚損防止装置
をドライヤーと冷却装置との間に設けた状態の概略側面
を示しである。Embodiments FIG. 1 is a schematic side view of a state in which a nib fouling prevention device according to an embodiment of the present invention is provided between a dryer and a cooling device.
１１は当該ウェブ汚損防止装置のチャンバーで、ドライ
ヤー４（第３図参照）の出口側と冷却装置５の入口側と
の間に設けられている。このチャンバー１１の内部にウ
ェブ１が通される。Reference numeral 11 denotes a chamber of the web fouling prevention device, which is provided between the outlet side of the dryer 4 (see FIG. 3) and the inlet side of the cooling device 5. The web 1 is passed through the chamber 11.
チャンバー１１内においてウェブ１の表裏両側には、ウ
ェブ１の進行方向前後に位置をずらしてエア吹き出し手
段としてのつニブ向き変え用エア吹き出しバー１２，１
３が設けられている。ウェブ向き変え用エア吹き出しバ
ー１２．１３はウェブ１の幅方向に延び、ウェブ１の略
全幅を覆っており、それぞれウェブ１表裏面にエアを吹
き付は得ろように、つまり、下側のつニブ向き変え用エ
ア吹き出しバー１２にあってはその上側面に、上側のウ
ェブ向き変え用エア吹き出しバー１３にあってはその下
側面にそれぞれ多数のエア吹き出し孔（図示せず）が設
けられている。また、ウェブ向き変え用エア吹き出しバ
ー１２．１３は図示されていない圧縮エア供給源に接続
されている。したがって、圧縮エア供給源から供給され
るエアが、ウェブ向き変え用エア吹き出しバー１２．１
３のエア吹き出し孔から上向きにあるいは下向きに吹き
出されることにより、ウェブ１は押し上げられあるいは
押し下げられて湾曲される。つまり、ウェブ１の移動！
！路に上側に凸状の湾曲部１ｇと下側に凸状の湾曲部１
ｂとが形成されるのである。Inside the chamber 11, on both the front and back sides of the web 1, there are air blowing bars 12, 1 for changing the direction of the nib, which are shifted forward and backward in the traveling direction of the web 1 and serve as air blowing means.
3 is provided. The air blowing bars 12 and 13 for changing the direction of the web extend in the width direction of the web 1 and cover almost the entire width of the web 1, and are designed to blow air to the front and back surfaces of the web 1, that is, to blow air to the front and back surfaces of the web 1. A large number of air blowing holes (not shown) are provided on the upper side of the air blowing bar 12 for changing the direction of the nib, and on the lower side of the air blowing bar 13 for changing the upper web direction. There is. The air blowing bar 12.13 for web deflection is also connected to a compressed air supply source (not shown). Therefore, the air supplied from the compressed air supply source
By blowing air upward or downward from the air blowing holes 3, the web 1 is pushed up or down and curved. In other words, move web 1!
! A curved part 1g that is convex on the upper side and a curved part 1 that is convex on the lower side on the road.
b is formed.
チャンバー１１内において、ウェブ１の表裏両側で各湾
曲部１ａ、ｌｂの下流側には、渦流生起手段としての渦
流生起用エア吹き出しバー１４．１５が設けられている
。渦流生起用エア吹き出しバー１４．１５はウェブ１の
輻方向に延びて略全幅を覆い、かつそれぞれには湾曲部
１ａ、ｌｂに向くエア吹き出し孔（図示せず）が設けら
れている。また、これら渦流生起用エア吹き出しバー１
４．１５は図示されていない圧縮エア供給源に接続され
ている。In the chamber 11, air blowing bars 14 and 15 for generating a vortex flow are provided downstream of each of the curved portions 1a and 1b on both the front and back sides of the web 1, as vortex generation means. The vortex generating air blowing bars 14,15 extend in the radial direction of the web 1 and cover substantially the entire width thereof, and are each provided with air blowing holes (not shown) facing the curved portions 1a, lb. In addition, these vortex generation air blowing bars 1
4.15 is connected to a compressed air supply source, not shown.
なお、チャンバ−１１自体はその上部で吸引源に接続さ
れている。また、チャンバー１１と吸引源との間にはイ
ンキ溶剤の回収除去装置などが設けられる。Note that the chamber 11 itself is connected to a suction source at its upper part. Furthermore, an ink solvent recovery and removal device is provided between the chamber 11 and the suction source.
前述のように、当該ウェブ汚損防止装置のチャンバー１
１内を通過するウェブ１は、ウェブ向き変え用エア吹き
出しバー１２．１３より表裏からエアが吹き付けられる
ことにより、湾曲部１ａ、ｌｂが形成された状態で浮揚
支持されて送られろ。湾曲部１ａ、ｌｂが形成されるこ
とにより、湾曲部１ａ、ｌｂにおいて、ウェブ１表裏面
に沿うインキ溶剤層（第２図中その流れを破線の矢印で
示しである）の最もウェブ１から遠い部分はウェブ１か
ら剥離される。As mentioned above, chamber 1 of the web fouling prevention device
The web 1 passing through the web 1 is blown with air from the front and back sides from the web direction changing air blowing bar 12.13, so that the web 1 is buoyed and sent with curved portions 1a and 1b formed. By forming the curved portions 1a and lb, the ink solvent layer along the front and back surfaces of the web 1 (its flow is indicated by the dashed arrow in FIG. 2) is farthest from the web 1 in the curved portions 1a and lb. The part is peeled off from the web 1.
渦流生起用エア吹き出しバー１４．１５からは湾曲部１
ａ、ｌｂに向けてウェブ進行方向とは逆向きにエアが吹
き付けられろ。このエア流（第２図中その流れを実線の
矢印で示しである）により、第１図中のＡ部拡大である
第２図に示すように、湾曲部１ａ、ｌｂに渦流Ｘが生じ
る。そして、この渦流によりウェブ１表層のインキ溶剤
層は破壊され剥離されろ。ウェブ１の裏面についても同
様の作用によりインキ溶剤層は剥離される。From the vortex generation air blowing bar 14.15, the curved part 1
Air is blown toward a and lb in the opposite direction to the web traveling direction. Due to this air flow (the flow is indicated by a solid arrow in FIG. 2), a vortex X is generated in the curved portions 1a and 1b, as shown in FIG. 2, which is an enlarged view of section A in FIG. 1. The ink solvent layer on the surface of the web 1 is destroyed and peeled off by this vortex. The ink solvent layer on the back side of the web 1 is also peeled off by the same action.
剥離されたインキ溶剤層は舞い上がり、チャンバー１１
内から吸引除去される。The peeled ink solvent layer flies up and enters the chamber 11.
It is removed by suction from within.
したがって、チャンバー１１を出るウェブ１の表裏には
インキ溶剤層はなく、冷却装置５によるウェブ１の冷却
過程においても、ウェブ１の汚損、クーリングロール７
の汚れなどは生じない。Therefore, there is no ink solvent layer on the front and back sides of the web 1 leaving the chamber 11, and even during the cooling process of the web 1 by the cooling device 5, the web 1 is not soiled, the cooling roll 7
No stains will occur.
この実施例では、渦流生起手段としてエア吹き出しバー
１４．１５を採用しているが、回転羽根の回転により渦
を生じさせるようにしてもよい。また、片面印刷の場合
には、ウェブ向き変え用エア吹き出しバー、渦流生起用
エア吹き出しバーは一方側にのｂ設ければ足りろ。In this embodiment, the air blowing bars 14, 15 are used as the vortex generating means, but the vortices may also be generated by rotation of rotating blades. Further, in the case of single-sided printing, it is sufficient to provide an air blowing bar for changing the direction of the web and an air blowing bar for generating a vortex on one side.
なお、上記実施例はウェブ汚損防止装置をドライヤー４
と冷却装置５との間に設けて、主にインキ溶剤層の剥離
に適用しているが、印刷ユニットの入口側に設けて、ウ
ェブ表裏面の紙粉やほこり等の除去にもそのまま適用で
きる。In addition, in the above embodiment, the web stain prevention device is installed in the dryer 4.
Although it is installed between the printer and the cooling device 5 and is mainly used to remove the ink solvent layer, it can also be installed on the inlet side of the printing unit and can also be used to remove paper powder, dust, etc. from the front and back surfaces of the web. .
〈発明の効果〉
本発明に係るウェブ汚損防止装置によれば、ウェブにエ
アの吹き付けにより湾曲部を作り、この湾曲部に渦流を
生じさせるようにしたので、ウェブ表面のインキｉ容剤
層、紙粉、はこり等の除去が確実になされろようになり
、印刷面の汚損等の不良を招くことがなくなり、また、
冷却装置のクーリングロールの汚れ等も回避できる。更
に、以上のように不具合を回避できることから、印刷機
の高速化も可能となる。<Effects of the Invention> According to the web stain prevention device according to the present invention, a curved portion is created on the web by blowing air, and a vortex is generated in this curved portion, so that the ink i-container layer on the surface of the web, Paper dust, clumps, etc. can be removed reliably, preventing defects such as stains on the printed surface, and
It is also possible to avoid dirt on the cooling roll of the cooling device. Furthermore, since the problems described above can be avoided, it is also possible to increase the speed of the printing press.
第１図は本発明の一実施例に係るウェブ汚損防止装置を
ドライヤーと冷却装置との間に設けた状態の概略側面図
、第２図は第１図中のＡ部の拡大図、第３図はオフセッ
ト輪転印刷機の一例の概略側面図である。
図 面 中、
１（よウェブ、
２は給紙装置、
３ａ、３ｂ、３ｃ、３ｄは印刷ユニット、４はドライヤ
ー
５は冷却装置、
６は折機、
７はクーリングロール、
１１はチャンバー
１２．１３はつニブ向き変え用エア吹き出しバー
１４．１５は渦流生起用エア吹き出しバーＸは渦流であ
る。
特 許 出 願 人
小森印刷機械株式会社
代 理 人FIG. 1 is a schematic side view of a web stain prevention device according to an embodiment of the present invention installed between a dryer and a cooling device, FIG. 2 is an enlarged view of section A in FIG. 1, and FIG. The figure is a schematic side view of an example of an offset rotary printing press. In the drawing, 1 is a web, 2 is a paper feeding device, 3a, 3b, 3c, 3d are printing units, 4 is a dryer 5 is a cooling device, 6 is a folding machine, 7 is a cooling roll, 11 is a chamber 12.13 The air blowing bars 14 and 15 for changing the direction of the nib are vortex-generating air blowing bars X. Patent applicant: Komori Printing Machinery Co., Ltd. Agent
Claims (1)
部を形成するエア吹き出し手段をウェブの表裏面側の少
なくとも一方側に設けると共に、ウェブの湾曲部にウェ
ブの進行方向と逆向きのエアを吹き付けて湾曲部に渦流
を発生させる渦流生起手段を湾曲部の近傍に設けてなる
ことを特徴とするウェブ汚損防止装置。Air blowing means for blowing air onto the surface of the web to form a curved portion in the moving path of the web is provided on at least one side of the front and back surfaces of the web, and air is supplied to the curved portion of the web in a direction opposite to the traveling direction of the web. A web stain prevention device comprising a vortex generating means for generating a vortex in the curved portion by spraying the fluid in the vicinity of the curved portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20952188A JPH0259348A (en) | 1988-08-25 | 1988-08-25 | Web fouling prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20952188A JPH0259348A (en) | 1988-08-25 | 1988-08-25 | Web fouling prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0259348A true JPH0259348A (en) | 1990-02-28 |
Family
ID=16574168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20952188A Pending JPH0259348A (en) | 1988-08-25 | 1988-08-25 | Web fouling prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0259348A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995015854A1 (en) * | 1993-12-11 | 1995-06-15 | Eltex-Elektrostatik Gmbh | Device and process for producing printed sheets |
| JP2002210919A (en) * | 2001-01-15 | 2002-07-31 | Sato Corp | Removing method and device for paper powder in printing press |
-
1988
- 1988-08-25 JP JP20952188A patent/JPH0259348A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995015854A1 (en) * | 1993-12-11 | 1995-06-15 | Eltex-Elektrostatik Gmbh | Device and process for producing printed sheets |
| JP2002210919A (en) * | 2001-01-15 | 2002-07-31 | Sato Corp | Removing method and device for paper powder in printing press |
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