JPH0247063A - Device for automatic cleaning of blanket cylinder - Google Patents
Device for automatic cleaning of blanket cylinderInfo
- Publication number
- JPH0247063A JPH0247063A JP19818088A JP19818088A JPH0247063A JP H0247063 A JPH0247063 A JP H0247063A JP 19818088 A JP19818088 A JP 19818088A JP 19818088 A JP19818088 A JP 19818088A JP H0247063 A JPH0247063 A JP H0247063A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- cloth
- blanket cylinder
- lightness
- completion
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 96
- 238000007639 printing Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims description 16
- 238000007645 offset printing Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 abstract description 30
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、プランケット胴自動洗浄装置に係り、特に、
洗浄布、洗浄液および印刷用紙の無駄を削減するための
洗浄完了検出手段に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an automatic plunket cylinder cleaning device, and in particular,
The present invention relates to cleaning completion detection means for reducing wastage of cleaning cloth, cleaning liquid, and printing paper.
従来のブランケット胴洗浄装置においては、洗浄行程は
自動化されているが、洗浄結果をチエツクしていない。In conventional blanket cylinder cleaning devices, the cleaning process is automated, but the cleaning results are not checked.
すなわち、充分と推定される洗浄回数を予めセットして
おき、その回数に達したら洗浄を終了していた。That is, the number of times of washing that is estimated to be sufficient is set in advance, and when the number of times of washing is reached, the washing is finished.
そのため、汚れが完全には洗浄されないままで印刷を再
開したり、逆に汚れが充分落ちているにも下りねらず洗
浄を継続し、洗浄布、洗浄液および印刷用紙を無１駄に
送る問題があった。As a result, printing may be resumed before the dirt has been completely cleaned, or conversely, cleaning may continue even after the dirt has been sufficiently removed, resulting in the problem of wasting cleaning cloth, cleaning liquid, and printing paper. there were.
そこで、洗浄回数を数種類予め設定しておき、使用時に
印刷物の状態に応じて選択するプノ式等が提案されてい
る。Therefore, a Puno method has been proposed in which several types of cleaning times are set in advance and selected depending on the condition of the printed matter during use.
しかし、このような方式では、予測が外れて再度洗浄す
る必要が生ずる等の手数が掛かり、多めの回数を設定す
る傾向にあるところから、無、駄のない最適な洗浄を常
に実行できる全自動洗浄装置ではなかった。However, with this type of method, it is time-consuming as the predictions are wrong and it becomes necessary to clean again, and there is a tendency to set a large number of times. It wasn't a cleaning device.
本発明の目的は、洗浄の完了を正確に検出し洗浄布、洗
浄液および印刷用紙の無駄を大帳に削減できる洗浄完了
検出手段を備えたブランケット胴自動洗浄装置を提供す
ることである。SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic blanket cylinder cleaning device equipped with a cleaning completion detection means that can accurately detect the completion of cleaning and reduce wastage of cleaning cloth, cleaning liquid, and printing paper to a large extent.
本発明は、上記目的を達成するために、オフセット印刷
機のブランケット胴洗浄装置において、洗浄作業中に印
刷機中を走行するウェブ表面の明度の変化を非接触的に
検出する紙面明度センサとその明度が所定値に達したと
きに洗浄が完了したと判定する回路とを含み、洗浄ユニ
ットに洗浄終了指示信号を出力する洗浄完了検出手段を
偏えたブランケット胴自動洗浄装置を提案するものであ
る。In order to achieve the above object, the present invention provides a paper surface brightness sensor that non-contactly detects changes in the brightness of the surface of a web running in the printing press during cleaning work in a blanket cylinder cleaning device for an offset printing press. The present invention proposes an automatic blanket cylinder cleaning device that includes a circuit that determines that cleaning is complete when the brightness reaches a predetermined value, and that has a cleaning completion detection means that outputs a cleaning completion instruction signal to a cleaning unit.
ブランケット胴洗浄完了検出手段は、一般に、印刷用紙
の表面および裏面の両側について設ける。Blanket cylinder cleaning completion detection means are generally provided on both the front and back sides of the printing paper.
また、多色刷りの場合は、基本的には、最終印刷ユニッ
トの後に設ければ良いが、各色の印刷ユニット毎に設け
ることもできる。Furthermore, in the case of multi-color printing, basically it is sufficient to provide it after the final printing unit, but it is also possible to provide it for each color printing unit.
〔作用〕
一般に、ブランケット胴洗浄作業中は、洗浄液で軟化し
たブランケット胴表面のインク汚れの一部は、走行して
いるウェブに付着し、運び去られる。このウェブ表面の
明度はブランケット胴表面のｌｒ３れの度合に対応して
おり、洗浄の進行に伴いブランケット胴表面のｌりれが
減少するに従って、ウェブ表面の明度は上ってくる。[Operation] Generally, during the blanket cylinder cleaning operation, a portion of the ink stains on the surface of the blanket cylinder softened by the cleaning liquid adheres to the running web and is carried away. The brightness of the web surface corresponds to the degree of lr3 deviation on the surface of the blanket cylinder, and as the lr3 deviation of the blanket cylinder surface decreases as cleaning progresses, the brightness of the web surface increases.
そこで、本発明においては、洗浄時に走らせておくウェ
ブの’／Ｑれがなくなったことを非接触的にすなわち光
学的に明度の変化として検出するので、必要な洗浄回数
の推測や設定が不要になる。Therefore, in the present invention, the disappearance of the '/Q deviation of the web that is run during cleaning is detected non-contactly, that is, optically, as a change in brightness, so there is no need to estimate or set the required number of cleanings. Become.
また、汚れが少ないものも多いものも従来は同じ時間を
掛けて洗浄していたが、本発明では汚れの少ないものは
洗浄完了を早期に検出するから、洗浄作業を短時間で完
了し、次の印、刷準備に取り掛かれる。In addition, conventionally it took the same amount of time to clean both items with little dirt and items with a lot of dirt, but with the present invention, the completion of cleaning is detected early on for items with little dirt, so the cleaning work can be completed in a short time and the next time. Start printing and preparing for printing.
一方、汚れの多いものは、再洗浄作業を何度も繰り返し
指示することなく、確実に洗浄できる。On the other hand, heavily soiled items can be reliably cleaned without requiring repeated instructions for re-cleaning.
結果として、洗浄布、洗浄液および印刷用紙の無駄がｆ
１１滅し、本発明の簡単な装置の低い設置コストは短期
間に回収でき、その後は長期に互り、ランニングコスト
を大幅に下げられる。As a result, wastage of cleaning cloth, cleaning fluid and printing paper is f
The low installation costs of the simple device of the present invention can be recovered in a short period of time, and then in the long term, significantly reducing running costs.
次に、図面を参照して、本発明の一実施例を説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
第１図および第２図は、本発明によるブランケット胴洗
浄完了検出手段を備えたブランケット胴自動洗浄装置の
一実施例を示す斜視図および側断面図である。1 and 2 are a perspective view and a side sectional view showing an embodiment of an automatic blanket cylinder cleaning device equipped with a blanket cylinder cleaning completion detection means according to the present invention.
これらの図において、２は洗浄対象のブランケット胴、
４は洗浄ユニットの布供給ロール、６は布巻き取りロー
ル、８は両ロール間で送られる洗浄布、１０はこの洗浄
布８に洗浄液を供給するスプレーバ−１１２は洗浄時に
洗浄布８をブランケット胴２に押し付けるプレッシャパ
ラ１く、１４は布送りシリンダ、１６は布送りアーム、
１８は印刷用紙である。In these figures, 2 is the blanket cylinder to be cleaned;
4 is a cloth supply roll of the cleaning unit; 6 is a cloth take-up roll; 8 is a cleaning cloth sent between the two rolls; 10 is a spray bar that supplies cleaning liquid to the cleaning cloth 8; a spray bar 112 is used to transfer the cleaning cloth 8 to the blanket cylinder during cleaning; 1 is a pressure roller that presses on 2, 14 is a cloth feed cylinder, 16 is a cloth feed arm,
18 is printing paper.
本発明においては、このようなブランケット胴自動洗浄
装置の基本構成に対し、印刷用紙１８のほぼ中央付近の
楕円の検出エリア２２をのぞみ。In the present invention, an elliptical detection area 22 located approximately at the center of the printing paper 18 is focused on the basic configuration of such an automatic blanket cylinder cleaning device.
印刷用紙１８表面の明度の変化を光学的に検出する紙面
明度センサ２０と、その出力により前記明度が所定値に
達したときに洗浄が完了したと判定する洗浄完了判定回
路２４とを設けである。A paper surface brightness sensor 20 that optically detects changes in the brightness of the surface of the printing paper 18, and a cleaning completion determination circuit 24 that determines that cleaning is complete when the brightness reaches a predetermined value based on the output thereof are provided. .
紙面明度センサ２０としては、フォトダイオ−１り、フ
ォ１−トランジスタ、ＣＣＤ等の種々の光導電素子を使
用できる。As the paper surface brightness sensor 20, various photoconductive elements such as a photodiode, a phototransistor, and a CCD can be used.
一般に、種々の幅の印刷用紙を送る場合、ブランケット
胴２の左右中心を基準に送ることから、紙面明度センサ
２０の検出エリア２２はブランケット胴２左右中心の延
長線付近に設定することが望ましい。Generally, when feeding printing paper of various widths, it is desirable to set the detection area 22 of the paper surface brightness sensor 20 near the extension line of the horizontal center of the blanket cylinder 2, since the paper is fed based on the horizontal center of the blanket cylinder 2.
また、洗浄完了判定回路２４は、例えば１図示のように
、コンパレータ２４Ａ〜２４Ｄと、検出レベル設定器２
４Ｅと、Ａ Ｎ Ｄ回路２４Ｆ−ＩＩとで構成する。上
側紙面明度センサ２ＯＡとＢからの信号を取り込むコン
パレータ２４ＡとＢは、検出レベル設定器２４． Ｅに
より紙面の地色に応じて設定された洗浄完了紙面明度の
基準レベルと前記紙面明度センサ２ＯＡおよびＢからの
信号とを比較し、この信号が前記基準レベルを越えたと
きに上側ブランケット胴２の洗浄が完了したとそれぞれ
判定する。ＡＮＤ回路２４Ｆは、それぞれのコンパレー
タ２４ＡとＢが完了を判定したときに、上側ブランケッ
ト胴２の全面に互り洗浄が完了したことを判定する。下
側の印刷面についてのコンパレータ２４ＣおよびＤとＡ
ＮＤ回路２４Ｇの動作も同様であり、下側ブランケット
胴２の洗浄完了を判定する。ＡＮＤ回路２４ＦとＧから
の信号は、さらに、ＡＮＤ回路２４Ｉ（に印加され、上
下両側のブランケット胴２の洗浄が完了したことを判定
する。Further, the cleaning completion determination circuit 24 includes comparators 24A to 24D and a detection level setter 2, as shown in FIG.
4E and an AND circuit 24F-II. Comparators 24A and 24B, which take in signals from the upper paper brightness sensors 2OA and 2OA, are connected to detection level setters 24. The reference level of the washed paper surface brightness set according to the ground color of the paper surface by E is compared with the signal from the paper surface brightness sensors 2OA and B, and when this signal exceeds the reference level, the upper blanket cylinder 2 It is determined that cleaning has been completed. The AND circuit 24F determines that the entire surface of the upper blanket cylinder 2 has been completely cleaned when the respective comparators 24A and 24B determine that cleaning has been completed. Comparators 24C and D and A for the lower printing side
The operation of the ND circuit 24G is similar, and determines whether the lower blanket cylinder 2 has been cleaned. The signals from the AND circuits 24F and 24G are further applied to an AND circuit 24I to determine that cleaning of the upper and lower blanket cylinders 2 is complete.
さて、このような構成の本発明ブランケット胴自動洗浄
装置の動作を、第３図により、説明する。Now, the operation of the automatic blanket cylinder cleaning apparatus of the present invention having such a configuration will be explained with reference to FIG.
図示しないコントロールパネルからの指示によりブラン
ケット胴洗浄を起動すると、（Ａ）に示すように、スプ
レーバー１０から洗浄液を洗浄布８に散布する。When blanket cylinder cleaning is started in accordance with an instruction from a control panel (not shown), cleaning liquid is sprayed onto the cleaning cloth 8 from the spray bar 10, as shown in (A).
次に、（Ｂ）に示すように、洗浄布８を第１図の布送り
シリンダ１４および布送りアーム１６等により送り、ブ
ランケット胴２との対向部に位置させる。Next, as shown in (B), the cleaning cloth 8 is fed by the cloth feeding cylinder 14 and the cloth feeding arm 16 shown in FIG.
ここで、洗浄液で湿った洗浄布８を、プレッシャパッド
１２により、ブランケット胴２に押し付け、洗浄を開始
する。このときに、洗浄完了検出手段を作動させ、紙面
明度センサ２０により、印刷用紙１８の明度の変化を検
出する。最初は１、ブランケット胴２の表面がインクで
汚れているので、印刷用紙１８の表面の明度が低いが、
洗浄が進むにつれて明度が上がり、ついにはきれいにな
ったことを示す基準レベルに達する。Here, the cleaning cloth 8 moistened with the cleaning liquid is pressed against the blanket cylinder 2 by the pressure pad 12 to start cleaning. At this time, the cleaning completion detection means is activated, and the paper surface brightness sensor 20 detects a change in the brightness of the printing paper 18. Initially, 1. Since the surface of the blanket cylinder 2 is dirty with ink, the brightness of the surface of the printing paper 18 is low;
As the cleaning progresses, the brightness increases until it reaches a standard level indicating that it is clean.
そこで、ＡＮＤ回路２４ Ｈから洗浄終了指示信号が出
力され、プレッシャパッド１２が洗浄布８の押し付けを
やめるとともに、（Ｄ）のように、洗浄布８を所定量巻
き取り、次回の洗浄に僅える。Therefore, a cleaning end instruction signal is output from the AND circuit 24H, and the pressure pad 12 stops pressing the cleaning cloth 8, and as shown in (D), the cleaning cloth 8 is wound up by a predetermined amount and the cleaning cloth 8 is retracted for the next cleaning. .
上記実施例では、上下両側のプランケット胴２の洗浄完
了を検出していたが、一方のブランケット胴２の洗浄完
了のみを検出する方式とすることもできる。In the above embodiment, the completion of cleaning of both the upper and lower blanket cylinders 2 is detected, but it is also possible to adopt a method of detecting the completion of cleaning of only one blanket cylinder 2.
また、多色刷りの場合は、最終ブランケット胴２の後に
洗浄完了検出手段を設ければ１本発明の目的は達成され
るが、各色の印刷ユニット毎に設けると、各段の洗浄布
および洗浄液の消費量を最小に押さえることが可能であ
る。In addition, in the case of multi-color printing, the object of the present invention can be achieved by providing a cleaning completion detection means after the final blanket cylinder 2, but if it is provided for each printing unit of each color, the cleaning cloth and cleaning liquid of each stage will be It is possible to keep consumption to a minimum.
さらに、ウェブ１８の明度の変化を検出する代わりに、
ブランケット胴２表面そのものの変化を検出しても良い
。Furthermore, instead of detecting changes in the brightness of the web 18,
Changes in the surface of the blanket cylinder 2 itself may also be detected.
本発明によれば、洗浄の完了を迅速かつ正確に自動検出
できるので、洗浄布、洗、今夜および印刷用、砥の無駄
が激減する。According to the present invention, since the completion of cleaning can be automatically detected quickly and accurately, the waste of cleaning cloths, washing cloths, cleaning cloths, printing materials, and abrasives is drastically reduced.
また、本発明の洗浄完了検出手段の構成は単純であるか
ら、その低い設置コストは短期間に回収でき、その後は
長期に互り、ランニンクコストを大幅に下げられる。Further, since the cleaning completion detection means of the present invention has a simple configuration, its low installation cost can be recovered in a short period of time, and thereafter, the running cost can be significantly reduced over a long period of time.
第１図は本発明によるプランケラ１〜胴洗浄完了検出手
段を備えたプランケット胴自動洗浄装置の一実施例を示
す斜視図、第２図はその側断面図、第３図は洗浄手順の
説明図である。
２・・プランケン１〜胴、 ４・・布供給ロール、６
布巻き取りロール、８・・洗浄布、１０ ・スプレー
バ−５１２・・プレッシャパット。
１４・・・布送りシリンダ、１６・・・布送りアーム、
１８・・ウェブ、 ２ｏ山紙面明度センサ、２
２・・・検出エリア、 ２４・・・洗浄完了判定回
路、２４Ａ−Ｄ・・・コンパレータ、
２４Ｅ・・検出レベル設定器、
２４Ｆ−Ｈ・・・ＡＮＤ回路。FIG. 1 is a perspective view showing an embodiment of an automatic plunger barrel cleaning device equipped with a plunger 1 to barrel cleaning completion detection means according to the present invention, FIG. 2 is a side sectional view thereof, and FIG. 3 is an explanation of the cleaning procedure. It is a diagram. 2. Planken 1 to body, 4. Cloth supply roll, 6
Cloth winding roll, 8..Cleaning cloth, 10.Spray bar 512..Pressure pad. 14... Cloth feed cylinder, 16... Cloth feed arm,
18... Web, 2o mountain paper surface brightness sensor, 2
2...Detection area, 24...Cleaning completion determination circuit, 24A-D...Comparator, 24E...Detection level setter, 24F-H...AND circuit.
Claims (1)
て、 洗浄作業中に印刷機中を走行する印刷用紙（ウェブ）表
面の明度の変化を非接触的に検出する紙面明度センサと
前記明度が所定値に達したときに前記洗浄が完了したと
判定する回路とを含み、洗浄ユニットに洗浄終了指示信
号を出力する洗浄完了検出手段を備えたことを特徴とす
るブランケット胴自動洗浄装置。[Scope of Claims] 1. A blanket cylinder cleaning device for an offset printing press, comprising: a paper surface brightness sensor that non-contact detects changes in the brightness of the surface of printing paper (web) running in the printing press during cleaning work; An automatic blanket cylinder cleaning device comprising a circuit for determining that the cleaning is completed when the brightness reaches a predetermined value, and cleaning completion detection means for outputting a cleaning completion instruction signal to a cleaning unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19818088A JPH0247063A (en) | 1988-08-09 | 1988-08-09 | Device for automatic cleaning of blanket cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19818088A JPH0247063A (en) | 1988-08-09 | 1988-08-09 | Device for automatic cleaning of blanket cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0247063A true JPH0247063A (en) | 1990-02-16 |
Family
ID=16386809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19818088A Pending JPH0247063A (en) | 1988-08-09 | 1988-08-09 | Device for automatic cleaning of blanket cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247063A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098734A (en) * | 2005-10-03 | 2007-04-19 | Baldwin Japan Ltd | Blanket cleaning method |
| JP2012506784A (en) * | 2008-10-26 | 2012-03-22 | ミヒャエル・カスパー | Apparatus and method for cleaning a rubber blanket on a blanket cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4968809A (en) * | 1972-11-01 | 1974-07-03 | ||
| JPS62140845A (en) * | 1985-12-13 | 1987-06-24 | Fujisawa Pharmaceut Co Ltd | Roll stain detector in locking printer |
| JPS62149449A (en) * | 1985-12-25 | 1987-07-03 | Tokyo Kikai Seisakusho:Kk | Guide roller cleaning and its device for rotary press |
| JPS62256657A (en) * | 1986-04-30 | 1987-11-09 | Nikka Kk | Method for washing guide roller of rotary press |
| JPS6333941B2 (en) * | 1979-10-31 | 1988-07-07 | Sumitomo Metal Ind |
-
1988
- 1988-08-09 JP JP19818088A patent/JPH0247063A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4968809A (en) * | 1972-11-01 | 1974-07-03 | ||
| JPS6333941B2 (en) * | 1979-10-31 | 1988-07-07 | Sumitomo Metal Ind | |
| JPS62140845A (en) * | 1985-12-13 | 1987-06-24 | Fujisawa Pharmaceut Co Ltd | Roll stain detector in locking printer |
| JPS62149449A (en) * | 1985-12-25 | 1987-07-03 | Tokyo Kikai Seisakusho:Kk | Guide roller cleaning and its device for rotary press |
| JPS62256657A (en) * | 1986-04-30 | 1987-11-09 | Nikka Kk | Method for washing guide roller of rotary press |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098734A (en) * | 2005-10-03 | 2007-04-19 | Baldwin Japan Ltd | Blanket cleaning method |
| JP2012506784A (en) * | 2008-10-26 | 2012-03-22 | ミヒャエル・カスパー | Apparatus and method for cleaning a rubber blanket on a blanket cylinder |
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