JP2007145027A - Printing cylinder cleaning device - Google Patents

Printing cylinder cleaning device Download PDF

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JP2007145027A
JP2007145027A JP2007016970A JP2007016970A JP2007145027A JP 2007145027 A JP2007145027 A JP 2007145027A JP 2007016970 A JP2007016970 A JP 2007016970A JP 2007016970 A JP2007016970 A JP 2007016970A JP 2007145027 A JP2007145027 A JP 2007145027A
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cleaning
cleaning liquid
liquid supply
pressure chamber
cylinder
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Harumoto Tateishi
晴基 立石
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Nikka KK
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Nikka KK
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Abstract

<P>PROBLEM TO BE SOLVED: To eliminate cleaning unevenness by evenly jetting and supplying cleaning liquid to a contact part of a wiping cloth of a cleaning device for a printing cylinder in the length direction equivalent to the length of the printing cylinder. <P>SOLUTION: In the cleaning device for the printing cylinder, the cleaning liquid is discharged to cleaning-liquid supply nozzles provided in a cleaning-liquid supply tube 40 which introduces cleaning liquid from a cleaning-liquid supply means 33 so that a uniform cleaning-liquid dampening part is formed in a cleaning sheet along the direction of the length of the cylinder and is brought in press-contact onto the cylinder. The cleaning-liquid supply tube 40 is composed of a first pressure chamber which receives the cleaning liquid from the cleaning-liquid supply means 33 and a second pressure chamber provided with cleaning-liquid supply nozzles for blowing onto the cleaning sheet while receiving the cleaning liquid from the first pressure chamber. The cross-sectional area of the first pressure chamber where the cleaning liquid flows is smaller in the interior side than the entrance side, or the first pressure chamber and the second pressure chamber are interconnected by means of a plurality of holes. The total sectional area of the plurality of holes may be larger than the total sectional area of the cleaning-liquid supply nozzles. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は印刷シリンダ洗浄装置に係り、特に、ブランケット胴等の印刷シリンダの表面を払拭洗浄するのに好適な装置であって、シリンダとの接触により洗浄する払拭布など洗浄シートに洗浄液を噴射供給する洗浄液供給手段を改良した洗浄装置に関する。   The present invention relates to a printing cylinder cleaning device, and more particularly, a device suitable for wiping and cleaning the surface of a printing cylinder such as a blanket cylinder, and supplying a cleaning liquid to a cleaning sheet such as a wiping cloth that is cleaned by contact with the cylinder. The present invention relates to a cleaning apparatus having an improved cleaning liquid supply means.

オフセット印刷機のブランケット胴などの印刷機シリンダは、長時間使用していると紙粉やインキカスなどが付着して印刷物を汚す原因となる。このため、印刷機シリンダは、所定の印刷枚数ごとに洗浄するようにしている。印刷機シリンダの洗浄装置として、シリンダの表面に接離可能とした押圧部に不織布からなる洗浄シートを巻き掛け、洗浄液供給ノズルから接触部に洗浄液を噴射供給しつつ回転しているシリンダに押し付けることにより払拭洗浄するものが知られている。すなわち、洗浄液供給ノズルから洗浄液を吹きつけ、洗浄液を含浸させた不織布からなる洗浄シートを走行できるようにしておき、洗浄作業時に押圧部をシリンダ表面に接触移動させることにより押圧部のニップ圧と印刷シリンダの回転を利用して表面汚れを払拭除去する構造としたものが一般的である。   Printing cylinders such as a blanket cylinder of an offset printing machine may cause paper dust or ink residue to adhere to the printed matter when used for a long time. For this reason, the printing press cylinder is cleaned every predetermined number of printed sheets. As a printing machine cylinder cleaning device, a cleaning sheet made of non-woven fabric is wrapped around a pressing part that can be brought into and out of contact with the cylinder surface, and the cleaning liquid is sprayed from the cleaning liquid supply nozzle onto the contact part and pressed against the rotating cylinder. What is wiped and washed by is known. That is, the cleaning liquid is sprayed from the cleaning liquid supply nozzle so that a cleaning sheet made of a nonwoven fabric impregnated with the cleaning liquid can be run, and the nip pressure of the pressing portion and printing are performed by moving the pressing portion to the cylinder surface during the cleaning operation. A structure that wipes and removes surface dirt using rotation of a cylinder is generally used.

従来、この種の洗浄装置は、洗浄対象のシリンダの胴長相当長さを有する押圧部の後方にロール状に巻かれた洗浄シートが装着される供給ロールと、巻取り用の巻取りロールとを配置し、供給ロールから繰り出された洗浄シートを押圧部に巻き掛けたのち、巻取りロールを間欠的に所定回転角度だけ回転させて洗浄シートを巻き取るようにしている。この胴長相当長さを有する洗浄シートには、洗浄液が洗浄液供給ノズルから吹きつけられる。この洗浄液供給ノズルは、図５（ｂ）に示すように、印刷機シリンダの胴長相当長さにわたって洗浄液が吹きつけられるように、細長い配管６１に形成され、かつ、複数の噴出口６３が所定の間隔毎Ｌａに明けられている。また、この細長い配管６１には、洗浄液と圧力空気との気液混合流体が送られている。   Conventionally, this type of cleaning apparatus includes a supply roll on which a cleaning sheet wound in a roll shape is mounted behind a pressing portion having a length corresponding to the cylinder length of a cylinder to be cleaned, a winding roll for winding The cleaning sheet fed from the supply roll is wound around the pressing portion, and then the winding roll is intermittently rotated by a predetermined rotation angle to wind up the cleaning sheet. The cleaning liquid is sprayed from the cleaning liquid supply nozzle onto the cleaning sheet having the length corresponding to the trunk length. As shown in FIG. 5B, the cleaning liquid supply nozzle is formed in an elongated pipe 61 so that the cleaning liquid is sprayed over a length corresponding to the cylinder length of the printing press cylinder. At every interval La. Further, a gas-liquid mixed fluid of cleaning liquid and pressure air is sent to the elongated pipe 61.

ところが、印刷機シリンダの胴長相当長さの洗浄シートに洗浄液を吹きつける細長い配管は複数の噴出口が所定の間隔毎に設けられているため、配管内では洗浄液の流れる速度（流速）がどの位置でも一定にならない。例えば、図５（ｂ）に示すように、配管の一端から洗浄液を圧縮エアーによって供給すると、配管の長手方向に沿って一定間隔をおいて形成された噴出口から噴射される洗浄液の分布が配管長さ方向で一定とならない。したがって、細長い配管に設けられた複数の噴出口から吹き出される流量Ｑが異なるため、洗浄シートが印刷機シリンダの胴長相当長さ方向で一様な濡れが得られず、印刷機シリンダの洗浄が胴長相当長さ方向で一様にならず印刷機シリンダに洗浄ムラが生ずるという問題がある。
実開平０１−１６５２３６号 However, since the slender pipe that blows the cleaning liquid on the cleaning sheet corresponding to the length of the cylinder of the printing press cylinder has a plurality of jet nozzles at predetermined intervals, the flow rate (flow velocity) of the cleaning liquid in the pipe is determined. The position is not constant. For example, as shown in FIG. 5B, when the cleaning liquid is supplied by compressed air from one end of the pipe, the distribution of the cleaning liquid sprayed from the spout formed at regular intervals along the longitudinal direction of the pipe It is not constant in the length direction. Accordingly, since the flow rate Q blown from a plurality of jet nozzles provided in the elongated pipe is different, the cleaning sheet cannot be uniformly wetted in the length direction corresponding to the cylinder length of the printing press cylinder, and the printing press cylinder is cleaned. However, there is a problem that unevenness in cleaning occurs in the cylinder of the printing press because it is not uniform in the length direction corresponding to the cylinder length.
Actual Kaihei 01-165236

本発明は上記従来の問題点に着目し、払拭布の接触部に洗浄液を印刷機シリンダの胴長相当長さ方向で一様に噴射供給する洗浄液供給ノズルが設けられた印刷シリンダ洗浄装置を提供することを目的としている。   The present invention provides a printing cylinder cleaning apparatus provided with a cleaning liquid supply nozzle that uniformly supplies a cleaning liquid to a contact portion of a wiping cloth in the length direction corresponding to the cylinder length of the printing press cylinder, paying attention to the above conventional problems. The purpose is to do.

上記の目的達成のために、本発明に係る印刷シリンダ洗浄装置は、印刷機シリンダの胴長方向に沿って洗浄液供給管を設け、洗浄液供給手段からの洗浄液を受けて前記洗浄液供給管に設けられた洗浄液供給ノズルから洗浄液を噴霧する印刷シリンダ洗浄装置において、洗浄液供給管は、洗浄液供給手段からの洗浄液を受ける第１圧力室と、第１圧力室からの洗浄液を受けとり洗浄液を吹きつける洗浄液供給ノズルが設けられた第２圧力室からなるものである。この場合において、洗浄液が供給される第１圧力室の断面積は入口側より奥側が小さくなるように構成し、あるいは、第１圧力室と第２圧力室とが複数の穴により連絡するように構成することができる。   To achieve the above object, the printing cylinder cleaning apparatus according to the present invention is provided with a cleaning liquid supply pipe along the cylinder length direction of the printing press cylinder, and receives the cleaning liquid from the cleaning liquid supply means and is provided in the cleaning liquid supply pipe. In the printing cylinder cleaning apparatus that sprays the cleaning liquid from the cleaning liquid supply nozzle, the cleaning liquid supply pipe has a first pressure chamber that receives the cleaning liquid from the cleaning liquid supply means, and a cleaning liquid supply nozzle that receives the cleaning liquid from the first pressure chamber and sprays the cleaning liquid The second pressure chamber is provided. In this case, the cross-sectional area of the first pressure chamber to which the cleaning liquid is supplied is configured so that the back side is smaller than the inlet side, or the first pressure chamber and the second pressure chamber are connected by a plurality of holes. Can be configured.

また、第１圧力室と第２圧力室とが複数の穴により連絡するように構成しつつ、複数の穴の総面積が洗浄液供給ノズルの総面積よりも大きく設定する構成としてもよい。   Further, the first pressure chamber and the second pressure chamber may be configured to communicate with each other through a plurality of holes, and the total area of the plurality of holes may be set larger than the total area of the cleaning liquid supply nozzle.

上記構成によれば、洗浄液供給管の洗浄液供給手段からの洗浄液を受ける第１圧力室において入口側と奥側とに流速の差があり圧力に差が生じても、第２圧力室でその差がなくなり、印刷機シリンダの胴長相当長さ方向に並んだ洗浄液供給ノズルから一様に洗浄液が吹き出される。洗浄液が供給される第１圧力室の断面積は入口側より奥側が小さいものであり、第１圧力室において入口側と奥側とに流速の差が少なくなるとともに、第２圧力室でその差がなくなり、印刷機シリンダの胴長相当長さ方向に並んだ洗浄液供給ノズルから一様に洗浄液が吹き出される。また、この時は第２圧力室の容積が小さくても圧力の差を無くすことができる。第１圧力室と第２圧力室とが複数の穴により連絡されているため、第１圧力室の流速の波動が第２圧力室に伝わることがなくなる。第１圧力室と第２圧力室との複数の穴の総面積が洗浄液供給ノズルの総面積よりも大きいものであり、洗浄液供給ノズルから吹き出される洗浄液の流量よりも第１圧力室から供給される洗浄液の流量が多いため、第２圧力室の圧力が一定に保たれる。   According to the above configuration, even if there is a difference in flow velocity between the inlet side and the back side in the first pressure chamber that receives the cleaning liquid from the cleaning liquid supply means of the cleaning liquid supply pipe, and there is a difference in pressure, the difference in the second pressure chamber The cleaning liquid is uniformly ejected from the cleaning liquid supply nozzles arranged in the length direction corresponding to the cylinder length of the printing press cylinder. The cross-sectional area of the first pressure chamber to which the cleaning liquid is supplied is smaller on the back side than on the inlet side. In the first pressure chamber, the difference in flow velocity between the inlet side and the back side is reduced, and the difference in the second pressure chamber is The cleaning liquid is uniformly ejected from the cleaning liquid supply nozzles arranged in the length direction corresponding to the cylinder length of the printing press cylinder. At this time, even if the volume of the second pressure chamber is small, the pressure difference can be eliminated. Since the first pressure chamber and the second pressure chamber are connected by a plurality of holes, the flow velocity of the first pressure chamber is not transmitted to the second pressure chamber. The total area of the plurality of holes in the first pressure chamber and the second pressure chamber is larger than the total area of the cleaning liquid supply nozzle, and is supplied from the first pressure chamber more than the flow rate of the cleaning liquid blown from the cleaning liquid supply nozzle. Therefore, the pressure of the second pressure chamber is kept constant.

以上説明したように、本発明によれば、洗浄液供給管は、管内部を隔壁により仕切って洗浄液供給手段からの洗浄液を受ける第１圧力室と洗浄液を吹きつける洗浄液供給ノズルが設けられた第２圧力室とに区画形成し、前記第１圧力室と第２圧力室は前記隔壁板に設けた複数の穴により連通してなる構成としているので、圧力室同士を繋ぐ通路の管路抵抗がなく、かつ、洗浄液供給管の洗浄液供給手段からの洗浄液は第２圧力室で圧力差がなくなり、印刷機シリンダの胴長相当長さ方向に並んだ洗浄液供給ノズルから洗浄液が一様に吹き出されるので、印刷機シリンダの表面をムラなく洗浄作用を行う。これにより綺麗な印刷ができるという効果が得られる。また、第１圧力室の断面積が入口側より奥側を小さくしたので入口側と奥側とに流速の差が少なくなり、第２圧力室の容積を小さくしても圧力の差を無くすことができる。また、第１圧力室に対して第２圧力室を設けるとともに、第１圧力室と第２圧力室とを複数の穴により連絡し、また、複数の穴の総面積を洗浄液供給ノズルの総面積よりも大きいものとしたため、第２圧力室から吹き出される洗浄液は、簡単な構成により胴長相当長さ方向で一様に吹き出されるという効果が得られる。   As described above, according to the present invention, the cleaning liquid supply pipe is provided with the first pressure chamber that receives the cleaning liquid from the cleaning liquid supply means by partitioning the inside of the pipe with the partition and the cleaning liquid supply nozzle that blows the cleaning liquid. Since the first pressure chamber and the second pressure chamber are configured to communicate with each other through a plurality of holes provided in the partition plate, there is no pipe resistance of a passage connecting the pressure chambers. In addition, the cleaning liquid from the cleaning liquid supply means of the cleaning liquid supply pipe has no pressure difference in the second pressure chamber, and the cleaning liquid is uniformly blown from the cleaning liquid supply nozzles arranged in the length direction corresponding to the cylinder length of the printing press cylinder. The surface of the printing press cylinder is cleaned evenly. As a result, it is possible to obtain an effect that beautiful printing can be performed. Further, since the cross-sectional area of the first pressure chamber is smaller on the back side than the inlet side, the difference in flow velocity between the inlet side and the back side is reduced, and even if the volume of the second pressure chamber is reduced, the pressure difference is eliminated. Can do. In addition, a second pressure chamber is provided for the first pressure chamber, the first pressure chamber and the second pressure chamber are connected by a plurality of holes, and the total area of the plurality of holes is the total area of the cleaning liquid supply nozzle. Therefore, the cleaning liquid blown out from the second pressure chamber can be blown out uniformly in the length direction corresponding to the trunk length with a simple configuration.

以下に、本発明に係る印刷シリンダ洗浄装置の具体的な実施形態を図面を参照して詳細に説明する。
まず、印刷シリンダ洗浄装置の全体構成を図４を参照して説明する。洗浄装置１０は洗浄対象のブランケット胴１２に対向して配置されており、これは一対の側板１４と、この側板間に渡しかけられた断面Ｈ形のステー１６とを有している。ステー１６はブランケット胴１２に対向し押圧部１８が取り付けられるメインステー部２０と、上下一対の洗浄シートガイドステー部２２とからなっている。ステー１６の後方には洗浄シート２４の供給ロール２６と巻取ロール２８とが配置され、洗浄シート２４は供給ロール２６から繰り出され、図中上部ガイドステー部２２Ｕから押圧部１８を経由して、下部ガイドステー部２２Ｄを経て後方の巻取ロール２８にて巻取られるようになっている。洗浄シート２４の巻取は、供給ロール２６に制動を掛けながら、巻取ロール２８を間欠回転駆動することにより行われ、そのための機構が側板１４に設備されている（図示せず）。また、前記ステー１６の内部における押圧部１８の側板１４の側方（図中上部）には洗浄液供給装置３０の洗浄液供給ノズル４６が配置され、洗浄シート２４に対して洗浄液を適宜噴射供給するようにしている。これにより、間欠的に送り出される洗浄シート２４は洗浄液で湿潤状態にされながら押圧部１８の先端部に達し、そのとき装置フレームを前進させてブランケット胴１２の表面に押圧部１８を接触させることにより、洗浄作用をなすのである。 Hereinafter, specific embodiments of a printing cylinder cleaning apparatus according to the present invention will be described in detail with reference to the drawings.
First, the overall configuration of the printing cylinder cleaning device will be described with reference to FIG. The cleaning device 10 is disposed to face a blanket cylinder 12 to be cleaned, and has a pair of side plates 14 and a stay 16 having an H-shaped cross section passed between the side plates. The stay 16 includes a main stay portion 20 that faces the blanket cylinder 12 and to which a pressing portion 18 is attached, and a pair of upper and lower cleaning sheet guide stay portions 22. A supply roll 26 and a take-up roll 28 for the cleaning sheet 24 are arranged behind the stay 16. The cleaning sheet 24 is fed out from the supply roll 26, and passes through the pressing portion 18 from the upper guide stay portion 22 U in the drawing. Winding is performed by a rear winding roll 28 through a lower guide stay portion 22D. The cleaning sheet 24 is taken up by intermittently driving the take-up roll 28 while braking the supply roll 26, and a mechanism for this is provided on the side plate 14 (not shown). Further, a cleaning liquid supply nozzle 46 of the cleaning liquid supply device 30 is disposed on the side of the side plate 14 of the pressing portion 18 inside the stay 16 (upper part in the drawing) so that the cleaning liquid is appropriately jetted and supplied to the cleaning sheet 24. I have to. Thereby, the cleaning sheet 24 delivered intermittently reaches the tip of the pressing portion 18 while being wetted with the cleaning liquid, and at that time, the device frame is advanced to bring the pressing portion 18 into contact with the surface of the blanket cylinder 12. It performs a cleaning action.

このような印刷シリンダ洗浄装置１０において、本発明の特徴的構成となっている洗浄液供給装置３０を図１に示す。洗浄液供給装置３０は、洗浄剤を蓄える溶剤タンク３１と、溶剤タンク３１から溶剤用第１チェック弁３２を介して吸入する定容積型の洗浄液供給手段３３と、定容積型の洗浄液供給手段３３を駆動するポンプ用電磁弁３４と、洗浄液供給手段３３からの洗浄剤を溶剤用第２チェック弁３５を介して受ける洗浄液供給管４０と、図示しない空気源からの圧縮空気を空気用チェック弁３６を介して洗浄液供給管４０に供給する圧縮空気用電磁弁３７とからなる。洗浄剤と圧縮空気とは空気用チェック弁３６と溶剤用第２チェック弁３５の後で合流されて洗浄液として洗浄液供給管４０に供給される。   In such a printing cylinder cleaning apparatus 10, a cleaning liquid supply apparatus 30 which is a characteristic configuration of the present invention is shown in FIG. The cleaning liquid supply device 30 includes a solvent tank 31 that stores a cleaning agent, a constant volume cleaning liquid supply means 33 that sucks from the solvent tank 31 through a first check valve 32 for solvent, and a constant volume cleaning liquid supply means 33. A pump solenoid valve 34 to be driven, a cleaning liquid supply pipe 40 that receives the cleaning agent from the cleaning liquid supply means 33 through the second check valve 35 for solvent, and an air check valve 36 that receives compressed air from an air source (not shown). And a compressed air solenoid valve 37 to be supplied to the cleaning liquid supply pipe 40. The cleaning agent and the compressed air are merged after the air check valve 36 and the second solvent check valve 35 and supplied to the cleaning liquid supply pipe 40 as a cleaning liquid.

次に、図２および図３で洗浄液供給管４０について説明する。図２は洗浄液供給管４０の側面断面図、図３は図２のＺ視図である。
洗浄液供給管４０は、空気用チェック弁３６と溶剤用第２チェック弁３５の後で合流されて洗浄液を受ける第１圧力室４２と、第１圧力室４２に併設され、第１圧力室からの洗浄液を受ける第２圧力室４４と、第２圧力室４４に設けられ洗浄シート２４に吹きつける洗浄液供給ノズル４６からなる。前記第１圧力室４２と第２圧力室４４とは洗浄液供給管４０の内部を隔壁４１により仕切って区画形成されている。洗浄液が中を流れる第１圧力室４２の奥側の断面積Ａｏは、入口側の断面積Ａｉよりも小さいものである。第１圧力室４２と第２圧力室４４とは複数の穴４８により連絡されている。また、この複数の穴４８の総面積Ｓａ（１個の穴の面積×穴の個数）は洗浄液供給ノズル４６の総面積Ｓｎよりも大きく明けられている。図３に示すように、本実施例では、第１圧力室４２は断面形状が長方形で、第２圧力室４４は断面形状が半円形で形成されているが、長方形と長方形との組合せ、あるいは、長方形と円形との組合せ等、図示に囚われることなく用いられる。 Next, the cleaning liquid supply pipe 40 will be described with reference to FIGS. 2 is a side sectional view of the cleaning liquid supply pipe 40, and FIG. 3 is a Z view of FIG.
The cleaning liquid supply pipe 40 is joined to the first pressure chamber 42, which is joined after the air check valve 36 and the second solvent check valve 35 and receives the cleaning liquid, and is connected to the first pressure chamber 42 from the first pressure chamber 42. A second pressure chamber 44 that receives the cleaning liquid, and a cleaning liquid supply nozzle 46 that is provided in the second pressure chamber 44 and blows against the cleaning sheet 24. The first pressure chamber 42 and the second pressure chamber 44 are defined by partitioning the inside of the cleaning liquid supply pipe 40 by a partition wall 41. The cross-sectional area Ao on the back side of the first pressure chamber 42 through which the cleaning liquid flows is smaller than the cross-sectional area Ai on the inlet side. The first pressure chamber 42 and the second pressure chamber 44 are connected to each other through a plurality of holes 48. The total area Sa (the area of one hole × the number of holes) of the plurality of holes 48 is larger than the total area Sn of the cleaning liquid supply nozzle 46. As shown in FIG. 3, in the present embodiment, the first pressure chamber 42 has a rectangular cross-sectional shape, and the second pressure chamber 44 has a semi-circular cross-sectional shape. The combination of a rectangle and a circle is used without being trapped in the figure.

上記構成により、次に作用について説明する。洗浄シート２４に対して洗浄液を噴射供給する指令が図示しないコントローラからポンプ用電磁弁３４および圧縮空気用電磁弁３７に出力される。ポンプ用電磁弁３４はコントローラからの指令により切り換わり、図示しない空気源からの圧縮空気を洗浄液供給手段３３に送る。洗浄液供給手段３３は、洗浄剤を溶剤用第２チェック弁３５を介して洗浄液供給管４０に送る。このとき、同時に圧縮空気用電磁弁３７がコントローラからの指令により切り換わり、図示しない空気源からの圧縮空気を空気用チェック弁３６を介して洗浄液供給管４０に送る。このとき、洗浄剤と圧縮空気とは合流されて洗浄液として洗浄液供給管４０の第１圧力室４２に供給される。   Next, the operation of the above configuration will be described. A command for supplying the cleaning liquid to the cleaning sheet 24 is output from a controller (not shown) to the pump solenoid valve 34 and the compressed air solenoid valve 37. The pump solenoid valve 34 is switched by a command from the controller, and sends compressed air from an air source (not shown) to the cleaning liquid supply means 33. The cleaning liquid supply means 33 sends the cleaning agent to the cleaning liquid supply pipe 40 via the second check valve for solvent 35. At the same time, the compressed air electromagnetic valve 37 is switched by a command from the controller, and compressed air from an air source (not shown) is sent to the cleaning liquid supply pipe 40 via the air check valve 36. At this time, the cleaning agent and the compressed air are merged and supplied to the first pressure chamber 42 of the cleaning liquid supply pipe 40 as a cleaning liquid.

洗浄液供給管４０の第１圧力室４２に入った洗浄液は、第１圧力室４２の入口側から第１圧力室４２と第２圧力室４４との複数の穴４８を経て順次第２圧力室４４に洗浄液を供給しながら奥側に流れる。このとき、第１圧力室４２は奥側の断面積Ａｏが入口側の断面積Ａｉよりも小さいため、ほぼ一定の流速で入口側から奥側に流れる。したがって、第１圧力室４２での圧力差が生ずることがなくなり、ほぼ一定の同じ流量を複数の穴４８から第２圧力室４４に洗浄液を供給することができる。第２圧力室４４に入った洗浄液は、一定の圧力となり洗浄液供給ノズル４６から洗浄シート２４に吹きつけられる。このとき、洗浄液供給ノズル４６から洗浄シート２４に吹きつけても、複数の穴４８の総面積Ｓａが洗浄液供給ノズル４６の総面積Ｓｎよりも大きく明けられているため、第２圧力室４４の圧力が低下、変動することがない。このように、洗浄液供給ノズル４６から印刷機シリンダの胴長相当長さ方向で一様に吹き出された洗浄液は洗浄シート２４に対して一様に吹き掛けられ、洗浄シート２４は湿潤状態にされながら押圧部１８の先端部に達し、ブランケット胴１２の表面を一様に洗浄ムラなく洗浄作用をなすのである。   The cleaning liquid that has entered the first pressure chamber 42 of the cleaning liquid supply pipe 40 sequentially passes through the plurality of holes 48 in the first pressure chamber 42 and the second pressure chamber 44 from the inlet side of the first pressure chamber 42. It flows to the back side while supplying the cleaning liquid. At this time, since the cross-sectional area Ao on the back side is smaller than the cross-sectional area Ai on the inlet side, the first pressure chamber 42 flows from the inlet side to the back side at a substantially constant flow rate. Accordingly, a pressure difference in the first pressure chamber 42 does not occur, and the cleaning liquid can be supplied from the plurality of holes 48 to the second pressure chamber 44 at a substantially constant same flow rate. The cleaning liquid that has entered the second pressure chamber 44 has a constant pressure and is sprayed from the cleaning liquid supply nozzle 46 onto the cleaning sheet 24. At this time, even when sprayed from the cleaning liquid supply nozzle 46 to the cleaning sheet 24, the total area Sa of the plurality of holes 48 is made larger than the total area Sn of the cleaning liquid supply nozzle 46. Will not drop or fluctuate. Thus, the cleaning liquid uniformly blown from the cleaning liquid supply nozzle 46 in the length direction corresponding to the cylinder length of the printing press cylinder is sprayed uniformly on the cleaning sheet 24, and the cleaning sheet 24 is kept in a wet state. It reaches the front end of the pressing portion 18 and uniformly cleans the surface of the blanket cylinder 12 without cleaning unevenness.

本発明の印刷シリンダ洗浄装置の全体システム構成図である。1 is an overall system configuration diagram of a printing cylinder cleaning device of the present invention. 本発明の要部となる洗浄液供給管の側面断面図である。It is side surface sectional drawing of the washing | cleaning liquid supply pipe | tube used as the principal part of this invention. 図２のＺ視図である。FIG. 3 is a Z view of FIG. 2. 実施例の洗浄装置の全体概要構成を示す側面断面図である。It is side surface sectional drawing which shows the whole schematic structure of the washing | cleaning apparatus of an Example. 従来の洗浄液供給管を説明する図側面断面図であり、図５（ａ）は圧力線図を、また、図５（ｂ）は洗浄液供給管の側面断面図である。FIGS. 5A and 5B are side cross-sectional views illustrating a conventional cleaning liquid supply pipe, FIG. 5A is a pressure diagram, and FIG. 5B is a side cross-sectional view of the cleaning liquid supply pipe.

符号の説明Explanation of symbols

１０………洗浄装置、１２………ブランケット胴（シリンダ）、１４………側板、１６………ステー、１８、１８Ａ、１８Ｂ、１８Ｃ、１８Ｄ、１８Ｅ………押圧部、２０………メインステー部、２４………洗浄シート、２６………供給ロール、２８………巻取ロール、３０………洗浄液供給装置、３１………溶剤タンク、３３………洗浄液供給手段、３４………ポンプ用電磁弁、３７………圧縮空気用電磁弁、４０………洗浄液供給管、４２………第１圧力室、４４………第２圧力室、４６………洗浄液供給ノズル、４８………複数の穴。   DESCRIPTION OF SYMBOLS 10 ......... Cleaning device, 12 ......... Blanket cylinder (cylinder), 14 ......... Side plate, 16 ......... Stay, 18, 18A, 18B, 18C, 18D, 18E ......... Pressing part, 20 ......... Main stay section 24... Cleaning sheet 26... Supply roll 28... Take-up roll 30... Cleaning liquid supply device 31 Solvent tank 33 ... Cleaning liquid supply means 34 ......... Pump solenoid valve, 37 ......... Compressed air solenoid valve, 40 ......... Cleaning liquid supply pipe, 42 ......... First pressure chamber, 44 ......... Second pressure chamber, 46 ......... Cleaning liquid supply Nozzle, 48 ......... Multiple holes.

Claims (4)

印刷機シリンダの胴長方向に沿って洗浄液供給管を設け、洗浄液供給手段からの洗浄液を受けて前記洗浄液供給管に設けられた洗浄液供給ノズルから洗浄液を噴霧する印刷シリンダ洗浄装置において、
洗浄液供給管は、管内部を隔壁により仕切って洗浄液供給手段からの洗浄液を受ける第１圧力室と洗浄液を吹きつける洗浄液供給ノズルが設けられた第２圧力室とに区画形成し、前記第１圧力室と第２圧力室は前記隔壁板に設けた複数の穴により連通してなることを特徴とする印刷シリンダ洗浄装置。 In the printing cylinder cleaning apparatus that provides the cleaning liquid supply pipe along the cylinder length direction of the printing press cylinder, receives the cleaning liquid from the cleaning liquid supply means, and sprays the cleaning liquid from the cleaning liquid supply nozzle provided in the cleaning liquid supply pipe.
The cleaning liquid supply pipe is partitioned into a first pressure chamber that receives the cleaning liquid from the cleaning liquid supply means and a second pressure chamber that is provided with a cleaning liquid supply nozzle that blows the cleaning liquid. The printing cylinder cleaning apparatus, wherein the chamber and the second pressure chamber communicate with each other through a plurality of holes provided in the partition plate. 洗浄液が供給される第１圧力室の断面積は入口側より奥側が小さいことを特徴とする請求項１記載の印刷シリンダ洗浄装置。   2. The printing cylinder cleaning apparatus according to claim 1, wherein the first pressure chamber to which the cleaning liquid is supplied has a cross-sectional area smaller on the back side than on the inlet side. 請求項１記載の印刷シリンダ洗浄装置において、第１圧力室と第２圧力室とが複数の穴により連絡されていることを特徴とする印刷シリンダ洗浄装置。   2. A printing cylinder cleaning apparatus according to claim 1, wherein the first pressure chamber and the second pressure chamber are connected to each other through a plurality of holes. 請求項３記載の印刷シリンダ洗浄装置において、複数の穴の総面積が洗浄液供給ノズルの総面積よりも大きいことを特徴とする印刷シリンダ洗浄装置。   4. The printing cylinder cleaning apparatus according to claim 3, wherein the total area of the plurality of holes is larger than the total area of the cleaning liquid supply nozzle.
JP2007016970A 2007-01-26 2007-01-26 Printing cylinder cleaning device Withdrawn JP2007145027A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015523244A (en) * 2012-05-31 2015-08-13 エルジー・ケム・リミテッド Reverse offset printing apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015523244A (en) * 2012-05-31 2015-08-13 エルジー・ケム・リミテッド Reverse offset printing apparatus and method
US10212820B2 (en) 2012-05-31 2019-02-19 Lg Chem, Ltd. Apparatus and method for reverse offset printing

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