JP2017030290A - Viscosity controller - Google Patents

Viscosity controller Download PDF

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JP2017030290A
JP2017030290A JP2015154796A JP2015154796A JP2017030290A JP 2017030290 A JP2017030290 A JP 2017030290A JP 2015154796 A JP2015154796 A JP 2015154796A JP 2015154796 A JP2015154796 A JP 2015154796A JP 2017030290 A JP2017030290 A JP 2017030290A
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ink
cleaning
gas
viscosity
solvent
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JP6421093B2 (en
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豊 松岡
Yutaka Matsuoka
豊 松岡
尚樹 板垣
Naoki Itagaki
尚樹 板垣
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Viscon (japan) Corp
Viscon (shanghai) Printing Tech & Dev Co Ltd
Viscon (shanghai) Printing Technology & Development Co Ltd
Viscon Japan
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Viscon (japan) Corp
Viscon (shanghai) Printing Tech & Dev Co Ltd
Viscon (shanghai) Printing Technology & Development Co Ltd
Viscon Japan
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Priority to CN201620309510.1U priority patent/CN206485048U/en
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Abstract

PROBLEM TO BE SOLVED: To provide a technology to effectively clean an ink passage of a viscosity controller for adjusting the viscosity of ink supplied to a printing machine.SOLUTION: A viscosity controller includes: an ink circulation mechanism having a suction pipe for sucking ink, a discharge pipe for discharging the ink, a circulation pump for circulating the ink, and gas piping by which gas that is a driving source of the circulation pump is supplied; a solvent supply mechanism for detecting viscosity of the ink and supplying a diluting solvent for diluting the ink to the ink circulation mechanism; and a cleaning mechanism for supplying a cleaning solvent to a passage of the ink. The cleaning mechanism includes a cleaning nozzle for mixing gas to the cleaning solvent.SELECTED DRAWING: Figure 1

Description

本発明は、印刷機に供給するインキの粘度を調整する粘度コントローラに関する。   The present invention relates to a viscosity controller that adjusts the viscosity of ink supplied to a printing press.

特許文献１に、グラビア印刷機に供給するインキの粘度を調整する粘度コントローラが開示されている。この粘度コントローラは、インキを循環させるポンプと、インキの粘度を測定する測定経路を備えている。グラビア印刷機のインキ皿の余分なインキは、このポンプによって粘度コントローラに吸入され、測定経路によってその粘度が測定される。インキの粘度が高い場合には、粘度コントローラ内でインキに溶剤が加えられて、粘度が調整されたインキが再びグラビア印刷機のインキ皿に供給される。   Patent Document 1 discloses a viscosity controller that adjusts the viscosity of ink supplied to a gravure printing machine. The viscosity controller includes a pump for circulating the ink and a measurement path for measuring the viscosity of the ink. Excess ink in the gravure printing machine ink pan is drawn into the viscosity controller by this pump, and its viscosity is measured by the measurement path. When the viscosity of the ink is high, a solvent is added to the ink in the viscosity controller, and the ink whose viscosity is adjusted is supplied again to the ink pan of the gravure printing machine.

特開２０１５−１３２２７号公報Japanese Patent Laying-Open No. 2015-13227

グラビア印刷機で用いる印刷用のインキを交換する場合には、粘度コントローラ内のインキの通路の洗浄を行う必要がある。従来、このインキの通路の洗浄は、作業者が手作業でこの通路に溶剤を通過させることによって行われており、洗浄が不十分になる場合もあった。   When the printing ink used in the gravure printing machine is changed, it is necessary to clean the ink passage in the viscosity controller. Conventionally, the cleaning of the ink passage has been performed by an operator manually passing a solvent through the passage, and the cleaning may be insufficient.

本発明は、上記の実情に鑑みてなされたものであって、粘度コントローラ内のインキの通路の洗浄を効果的に実行可能な技術提供することを目的とする。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique capable of effectively performing the cleaning of the ink passage in the viscosity controller.

本発明は、印刷機に供給するインキの粘度を調整する粘度コントローラを提供する。該粘度コントローラは、前記インキを吸入する吸入管と該インキを吐出する吐出管と該インキを循環する循環ポンプと該循環ポンプの駆動源となる気体の供給がなされる気体配管とを有するインキ循環機構と、該インキの粘度を検知して該インキを希釈する希釈用溶剤を該インキ循環機構に供給する溶剤供給機構と、該インキの通路に洗浄用溶剤を供給する洗浄機構とを備える。該洗浄機構は、該洗浄用溶剤に気体を混在させる洗浄用ノズルを備える。   The present invention provides a viscosity controller that adjusts the viscosity of ink supplied to a printing press. The viscosity controller includes an intake pipe that sucks the ink, a discharge pipe that discharges the ink, a circulation pump that circulates the ink, and a gas pipe that supplies a gas serving as a drive source of the circulation pump. A mechanism, a solvent supply mechanism that supplies the ink circulation mechanism with a dilution solvent that detects the viscosity of the ink and dilutes the ink, and a cleaning mechanism that supplies the cleaning solvent to the ink passage. The cleaning mechanism includes a cleaning nozzle for mixing a gas with the cleaning solvent.

本発明の粘度コントローラは、インキの通路に洗浄用溶剤を供給する洗浄機構を備える。洗浄機構は、該洗浄用溶剤に気体を混在させる洗浄用ノズルを備える。洗浄用ノズルは、洗浄用溶剤に気体を混在させて洗浄用溶剤の洗浄効果を向上させることができる。本発明によれば、粘度コントローラ内のインキの通路の洗浄を効果的に実行することができる。   The viscosity controller of the present invention includes a cleaning mechanism for supplying a cleaning solvent to the ink passage. The cleaning mechanism includes a cleaning nozzle that mixes a gas with the cleaning solvent. The cleaning nozzle can improve the cleaning effect of the cleaning solvent by mixing a gas with the cleaning solvent. According to the present invention, cleaning of the ink passage in the viscosity controller can be executed effectively.

前記洗浄機構は、前記洗浄用溶剤を貯留する洗浄容器を複数備えていてもよい。複数の洗浄容器を備えていることによって、例えば、１つの洗浄容器内の洗浄用溶剤を用いて予洗い運転を行った後に、他の洗浄容器の洗浄用溶剤を用いて本洗い運転を行う等の段階的な洗浄運転が可能となり、粘度コントローラ内のインキの通路の洗浄をより効果的に実行することができる。   The cleaning mechanism may include a plurality of cleaning containers for storing the cleaning solvent. By providing a plurality of cleaning containers, for example, a pre-washing operation is performed using a cleaning solvent in one cleaning container, and then a main cleaning operation is performed using a cleaning solvent in another cleaning container. In this way, the ink passage in the viscosity controller can be washed more effectively.

前記洗浄用ノズルは、前記気体を噴出する気体噴孔と、該気体噴孔がある位置に前記吸入管の吸入口を保持する保持部とを備えていてもよい。気体噴孔から噴出される気体を効率よく吸入口に導入することができ、粘度コントローラ内のインキの通路の洗浄をより効果的に実行することができる。   The cleaning nozzle may include a gas nozzle that ejects the gas and a holding unit that holds the suction port of the suction pipe at a position where the gas nozzle is located. The gas ejected from the gas nozzle can be efficiently introduced into the suction port, and the ink passage in the viscosity controller can be more effectively performed.

前記洗浄用ノズルは、前記気体配管に連通していてもよい。インキを循環する循環ポンプの駆動源となる気体を供給するために気体配管を利用して、洗浄用溶剤に気体を混在させることができる。   The cleaning nozzle may communicate with the gas pipe. A gas can be mixed in the cleaning solvent by using a gas pipe to supply a gas that is a drive source of a circulation pump that circulates ink.

本発明の粘度コントローラは、さらに、前記洗浄用溶剤をインキの通路へ供給する際に、前記気体配管から前記洗浄用ノズルへ気体を間欠的に供給する制御機構を備えていてもよい。気体の供給を間欠的に行うことによって、粘度コントローラ内のインキの通路の洗浄をより効果的に実行することができる。   The viscosity controller of the present invention may further include a control mechanism that intermittently supplies gas from the gas pipe to the cleaning nozzle when supplying the cleaning solvent to the ink passage. By intermittently supplying the gas, cleaning of the ink passage in the viscosity controller can be performed more effectively.

実施例の粘度コントローラの概略図。The schematic of the viscosity controller of an Example. 粘度コントローラの洗浄用ノズルの正面図。The front view of the nozzle for washing | cleaning of a viscosity controller. 粘度コントローラの洗浄用ノズルの側面図。The side view of the nozzle for washing | cleaning of a viscosity controller. 洗浄容器に設置した洗浄用ノズルの概略図。Schematic of the nozzle for washing installed in the washing container.

本実施例では、グラビア印刷機に供給するインキの粘度を調整する粘度コントローラ１を例示して説明する。図１は、粘度コントローラ１と、印刷機の一部とを図示している。印刷機は、印刷用のインキを貯留するインキ皿２０１と、版胴であるシリンダ２１０と、圧胴であるシリンダ２１２とを備えている。シリンダ２１０とシリンダ２１２との間にシート状の印刷対象物２１４を通過させることによって、インキ皿２０１のインキを印刷対象物２１４に印刷することができる。インキ皿２０１には、粘度コントローラ１からインキが供給され、余剰のインキはインキ皿２０１から排出されてサブタンク２０２に貯留される。粘度コントローラ１は、サブタンク２０２からインキを吸入し、必要に応じてインキに希釈用溶剤を追加してその粘度を調整して、再びインキ皿２０１に供給する。   In this embodiment, a viscosity controller 1 that adjusts the viscosity of ink supplied to the gravure printing machine will be described as an example. FIG. 1 illustrates a viscosity controller 1 and part of a printing press. The printing machine includes an ink tray 201 that stores printing ink, a cylinder 210 that is a plate cylinder, and a cylinder 212 that is an impression cylinder. By passing the sheet-like print object 214 between the cylinder 210 and the cylinder 212, the ink in the ink tray 201 can be printed on the print object 214. Ink is supplied from the viscosity controller 1 to the ink tray 201, and excess ink is discharged from the ink tray 201 and stored in the sub tank 202. The viscosity controller 1 sucks ink from the subtank 202, adds a dilution solvent to the ink as necessary, adjusts the viscosity thereof, and supplies the ink to the ink tray 201 again.

粘度コントローラ１は、インキ循環機構１１と、溶剤供給機構１３と、洗浄機構１５と、制御機構１７とを備える。インキ循環機構１１は、サブタンク２０２からインキを吸入する吸入管１１０と、インキ皿２０１にインキを吐出する吐出管１１２と、インキを循環する循環ポンプ１１４とを含む。インキ循環機構１１全体がインキの通路となる。吸入管１１０と吐出管１１２は、循環ポンプ１１４を介して接続されている。循環ポンプ１１４を駆動させることによって、吸入管１１０からインキが吸入され、このインキは循環ポンプ１１４を通過して吐出管１１２からインキ皿２０１に吐出される。循環ポンプ１１４は、エア駆動式のダイアフラムポンプであり、循環ポンプ１１４に接続された気体配管１１６から供給される気体によって駆動される。本実施例では、気体配管１１６は圧縮空気を供給するエア配管であり、気体配管１１６に設置されたレギュレータ１８０によって所定圧力に調整された空気が粘度コントローラ１に供給される。粘度コントローラ１は制御パネル１７０を備えており、作業者は、制御パネル１７０上で通常運転と洗浄運転（本実施例では、予洗い運転と本洗い運転とを含む）とを切り替えることができる。   The viscosity controller 1 includes an ink circulation mechanism 11, a solvent supply mechanism 13, a cleaning mechanism 15, and a control mechanism 17. The ink circulation mechanism 11 includes a suction pipe 110 that sucks ink from the sub tank 202, a discharge pipe 112 that discharges ink to the ink tray 201, and a circulation pump 114 that circulates ink. The entire ink circulation mechanism 11 serves as an ink passage. The suction pipe 110 and the discharge pipe 112 are connected via a circulation pump 114. By driving the circulation pump 114, ink is sucked from the suction pipe 110, and the ink passes through the circulation pump 114 and is discharged from the discharge pipe 112 to the ink tray 201. The circulation pump 114 is an air-driven diaphragm pump, and is driven by gas supplied from a gas pipe 116 connected to the circulation pump 114. In the present embodiment, the gas pipe 116 is an air pipe that supplies compressed air, and air adjusted to a predetermined pressure by a regulator 180 installed in the gas pipe 116 is supplied to the viscosity controller 1. The viscosity controller 1 includes a control panel 170, and an operator can switch between a normal operation and a cleaning operation (including a pre-washing operation and a main-washing operation in this embodiment) on the control panel 170.

溶剤供給機構１３は、インキ希釈用の希釈用溶剤を貯留する溶剤タンク１３０と、溶剤タンク１３０と吸入管１１０とを接続する溶剤供給路１３２と、溶剤供給路１３２に設けられた電磁弁１３４と、粘度検知機構１３６とを備える。粘度検知機構１３６は、循環ポンプ１１４の作動圧力の脈動数を検知して電磁弁１３４の開閉を制御する圧力スイッチである。循環ポンプ１１４はダイアフラムポンプであり、循環ポンプ１１４を通過するインキの粘度が高くなると、循環ポンプ１１４の吸入・吐出負荷が大きくなり、粘度検知機構１３６が検知する循環ポンプ１１４の脈動数が小さくなる。粘度検知機構１３６は、検知した循環ポンプ１１４の脈動数が予め設定された所定の脈動数以上の場合には電磁弁１３４を閉とし、検知した循環ポンプ１１４の脈動数が予め設定された所定の脈動数未満の場合には電磁弁１３４を開とする。インキの粘度が高くなって循環ポンプ１１４の脈動数が小さくなり電磁弁１３４が開の状態になると、溶剤タンク１３０から希釈用溶剤が吸入管１１０に流入する。これによって、循環ポンプ１１４に流入するインキが希釈されて、その粘度が低下し、循環ポンプ１１４の脈動数が所定の脈動数以上となると、粘度検知機構１３６によって電磁弁１３４が閉じられる。作業者が制御パネル１７０によって通常運転を選択すると、インキ循環機構１１によって、印刷機と粘度コントローラ１との間でインキが循環し、溶剤供給機構１３によって、粘度コントローラ１から印刷機に供給されるインキの粘度が一定に維持される。   The solvent supply mechanism 13 includes a solvent tank 130 that stores a dilution solvent for diluting ink, a solvent supply path 132 that connects the solvent tank 130 and the suction pipe 110, and an electromagnetic valve 134 that is provided in the solvent supply path 132. And a viscosity detection mechanism 136. The viscosity detection mechanism 136 is a pressure switch that detects the number of pulsations of the operating pressure of the circulation pump 114 and controls opening and closing of the electromagnetic valve 134. The circulation pump 114 is a diaphragm pump. When the viscosity of the ink passing through the circulation pump 114 increases, the suction / discharge load of the circulation pump 114 increases, and the number of pulsations of the circulation pump 114 detected by the viscosity detection mechanism 136 decreases. . The viscosity detection mechanism 136 closes the electromagnetic valve 134 when the detected pulsation number of the circulation pump 114 is equal to or higher than a predetermined pulsation number set in advance, and the detected pulsation number of the circulation pump 114 is set at a predetermined value. When the number is less than the number of pulsations, the electromagnetic valve 134 is opened. When the viscosity of the ink increases, the pulsation number of the circulation pump 114 decreases, and the electromagnetic valve 134 is opened, the diluting solvent flows into the suction pipe 110 from the solvent tank 130. As a result, the ink flowing into the circulation pump 114 is diluted to reduce its viscosity, and when the pulsation number of the circulation pump 114 exceeds a predetermined pulsation number, the viscosity detection mechanism 136 closes the electromagnetic valve 134. When the operator selects normal operation by the control panel 170, the ink circulation mechanism 11 circulates ink between the printing press and the viscosity controller 1, and the solvent supply mechanism 13 supplies the ink from the viscosity controller 1 to the printing press. The viscosity of the ink is kept constant.

洗浄機構１５は、洗浄用溶剤を貯留する洗浄容器１５１，１５２と、洗浄用ノズル１６とを備える。洗浄用溶剤は、希釈用溶剤と同じ溶剤を用いることが好ましい。洗浄用ノズル１６は、洗浄容器１５２内に配置して使用される。洗浄用ノズル１６は、分岐管１５６を介して気体配管１１６に接続されている。洗浄用ノズル１６は、循環ポンプ１１４の駆動源となる気体配管１１６から供給される圧縮空気を利用して、洗浄容器１５２内に貯留された洗浄用溶剤内に空気を噴出し、空気が混在する洗浄用溶剤とすることができる。分岐管１５６には電磁弁１８２が設置されている。制御機構１７は、電磁弁１８２を制御して洗浄用ノズル１６への空気の供給を制御する。   The cleaning mechanism 15 includes cleaning containers 151 and 152 that store a cleaning solvent, and a cleaning nozzle 16. The cleaning solvent is preferably the same solvent as the dilution solvent. The cleaning nozzle 16 is used by being disposed in the cleaning container 152. The cleaning nozzle 16 is connected to the gas pipe 116 via the branch pipe 156. The cleaning nozzle 16 uses compressed air supplied from a gas pipe 116 serving as a drive source of the circulation pump 114 and jets air into the cleaning solvent stored in the cleaning container 152, so that the air is mixed. It can be used as a solvent for cleaning. The branch pipe 156 is provided with an electromagnetic valve 182. The control mechanism 17 controls the electromagnetic valve 182 to control the supply of air to the cleaning nozzle 16.

図２，３に示すように、洗浄用ノズル１６は、接続部１６０と、気体噴出部１６１と、支持板１６３、１６７とを備えている。気体噴出部１６１は、ｚ方向に伸びる直方体状の部材であり、ｚ軸の正方向の先端において接続部１６０を介して分岐管１５６に接続されている。気体噴出部１６１の前面側（ｙ軸の負方向側）に支持板１６３が固定されており、背面側（ｙ軸の正方向側）に支持板１６７が固定されている。支持板１６３は、ｙ方向に貫通する気体噴孔１６４と、ｙ方向が開放した四角形状の筒体である第１保持部１６５と、第１保持部１６５からｚ軸の負方向に伸びる平板状の第２保持部１６６とを備えている。破線で示すように、気体噴出部１６１のｚ軸の負方向の端部は、気体噴孔１６４の背面側に位置している。分岐管１５６から接続部１６０を介して気体噴出部１６１内に供給された空気は、気体噴出部１６１内を通過し、気体噴孔１６４から噴出される。図２に示す気体噴孔１６４の周囲を取り囲む円形の破線１１０ｂは、吸入口１１０ａを支持板１６３上に載置したときの吸入口１１０ａの内径部分の位置を示しており、吸入口１１０ａは、第２保持部１６６によって、この気体噴孔１６４の開口を覆う位置に保持される。支持板１６７は、支持板１６３のｚ軸の正方向の端部近傍において気体噴出部１６１の背面側（ｙ軸の正方向側）に固定されており、気体噴出部１６１の背面側に突出している。   As shown in FIGS. 2 and 3, the cleaning nozzle 16 includes a connection portion 160, a gas ejection portion 161, and support plates 163 and 167. The gas ejection portion 161 is a rectangular parallelepiped member extending in the z direction, and is connected to the branch pipe 156 via the connection portion 160 at the tip end in the positive direction of the z axis. The support plate 163 is fixed to the front side (the negative direction side of the y axis) of the gas ejection portion 161, and the support plate 167 is fixed to the back side (the positive direction side of the y axis). The support plate 163 includes a gas injection hole 164 that penetrates in the y direction, a first holding portion 165 that is a quadrangular cylindrical body that is open in the y direction, and a flat plate shape that extends from the first holding portion 165 in the negative z-axis direction. 2nd holding | maintenance part 166 is provided. As indicated by the broken line, the end of the gas ejection portion 161 in the negative direction of the z axis is located on the back side of the gas ejection hole 164. The air supplied from the branch pipe 156 into the gas ejection part 161 through the connection part 160 passes through the gas ejection part 161 and is ejected from the gas ejection hole 164. A circular broken line 110b surrounding the gas injection hole 164 shown in FIG. 2 indicates the position of the inner diameter portion of the suction port 110a when the suction port 110a is placed on the support plate 163. The second holding part 166 holds the gas nozzle hole 164 at a position covering the opening. The support plate 167 is fixed to the back side of the gas ejection part 161 (the positive direction side of the y axis) in the vicinity of the end of the support plate 163 in the positive direction of the z axis, and protrudes to the back side of the gas ejection part 161. Yes.

図４に示すように、洗浄用ノズル１６は、支持板１６３側が上方となるように洗浄容器１５２に斜めに立てかけるように配置される。支持板１６７は、洗浄容器１５２のへりに係合し、気体噴孔１６４が洗浄用溶剤中に浸漬されるように洗浄用ノズル１６を支持する。   As shown in FIG. 4, the cleaning nozzle 16 is disposed so as to lean against the cleaning container 152 so that the support plate 163 side is upward. The support plate 167 engages with the edge of the cleaning container 152 and supports the cleaning nozzle 16 so that the gas nozzle hole 164 is immersed in the cleaning solvent.

印刷機のインキの交換時には、まず、粘度コントローラ１のインキの通路の予洗い運転を実行する。粘度コントローラ１の吸入口１１０ａを洗浄容器１５１の洗浄用溶剤に浸漬し、粘度コントローラ１の吐出口１１２ａを洗浄容器１５１内に向けて載置する。この状態で、作業者が制御パネル１７０を操作して予洗い運転を選択すると、制御機構１７は、循環ポンプ１１４を所定の時間だけ駆動する。これによって、洗浄容器１５１の洗浄用溶剤は、吸入口１１０ａから吸入されてインキ循環機構１１のインキの通路を循環し、吐出口１１２ａから洗浄容器１５１内に吐出される。   When replacing the ink in the printing press, first, a pre-washing operation of the ink passage of the viscosity controller 1 is executed. The suction port 110 a of the viscosity controller 1 is immersed in the cleaning solvent of the cleaning container 151, and the discharge port 112 a of the viscosity controller 1 is placed in the cleaning container 151. In this state, when the operator operates the control panel 170 to select the prewash operation, the control mechanism 17 drives the circulation pump 114 for a predetermined time. Accordingly, the cleaning solvent in the cleaning container 151 is sucked from the suction port 110a, circulates through the ink passage of the ink circulation mechanism 11, and is discharged into the cleaning container 151 from the discharge port 112a.

次に、洗浄用ノズル１６を用いて洗浄容器１５２に気体を供給しながら、粘度コントローラ１のインキの通路の本洗浄を行う。吸入口１１０ａを洗浄容器１５１から取り出して、図４に示すように、洗浄容器１５２の洗浄用溶剤に浸漬し、吐出口１１２ａを洗浄容器１５２内に向けて載置する。吐出口１１２ａと吐出管１１２とを接続するコネクタ部分の一部を第１保持部１６５の筒体に嵌め込むように載置することによって、吐出口１１２ａを洗浄容器１５２内に向けて載置することができる。吸入口１１０ａは、気体噴孔１６４を覆う位置に載置される。第２保持部１６６によって吸入口１１０ａの位置がずれることが抑制され、吸入口１１０ａは気体噴孔１６４の開口を覆う位置に保持される。この状態で、作業者が制御パネル１７０によって本洗い運転を選択すると、制御機構１７は、電磁弁１８２を制御しながら、循環ポンプ１１４を所定の時間だけ駆動する。制御機構１７は、電磁弁１８２を所定の時間ごとに開閉し、洗浄用ノズル１６に間欠的に空気を供給する。例えば、５秒間ごとに、電磁弁１８２の開状態と閉状態とを切り替える制御を所定の時間繰り返す。これによって、洗浄容器１５２の洗浄用溶剤には、間欠的に空気が供給される。吸入口１１０ａは、第２保持部１６６によって気体噴孔１６４を覆う位置に保持されているため、洗浄用ノズル１６の気体噴孔１６４から供給された空気が混在する洗浄用溶剤が効率よく吸入口１１０ａから吸入される。空気が混在する洗浄用溶剤が効率よく粘度コントローラ１のインキの通路を循環し、吐出口１１２ａから洗浄容器１５２内に吐出される。また、洗浄用ノズル１６からの空気の供給を間欠的に行うため、洗浄中の洗浄用溶剤の流れに変化が生じ、インキの通路をより効果的に洗浄することができる。 Next, the main cleaning of the ink passage of the viscosity controller 1 is performed while supplying gas to the cleaning container 152 using the cleaning nozzle 16. The suction port 110a is taken out from the cleaning container 151 and immersed in the cleaning solvent in the cleaning container 152, and the discharge port 112a is placed in the cleaning container 152 as shown in FIG. A part of the connector that connects the discharge port 112a and the discharge pipe 112 is placed so as to be fitted into the cylindrical body of the first holding portion 165, so that the discharge port 112a is placed in the cleaning container 152. be able to. The suction port 110 a is placed at a position covering the gas injection hole 164. The second holding portion 166 suppresses the position of the suction port 110a from shifting, and the suction port 110a is held at a position that covers the opening of the gas injection hole 164. In this state, when the operator selects the main washing operation by the control panel 170, the control mechanism 17 drives the circulation pump 114 for a predetermined time while controlling the electromagnetic valve 182. The control mechanism 17 opens and closes the electromagnetic valve 182 every predetermined time, and intermittently supplies air to the cleaning nozzle 16. For example, the control for switching between the open state and the closed state of the electromagnetic valve 182 is repeated for a predetermined time every 5 seconds. As a result, air is intermittently supplied to the cleaning solvent in the cleaning container 152. Since the suction port 110a is held at a position that covers the gas nozzle hole 164 by the second holding part 166, the cleaning solvent mixed with the air supplied from the gas nozzle hole 164 of the cleaning nozzle 16 is efficiently used as the suction port. Inhaled from 110a. The cleaning solvent mixed with air efficiently circulates in the ink passage of the viscosity controller 1 and is discharged into the cleaning container 152 from the discharge port 112a. In addition, since the air is intermittently supplied from the cleaning nozzle 16, the flow of the cleaning solvent during the cleaning changes, and the ink passage can be cleaned more effectively.

上記のとおり、本実施例の粘度コントローラ１では、洗浄用ノズル１６は、循環ポンプ１１４の駆動源となる気体を供給する気体配管１１６に分岐管１５６を介して接続されており、洗浄用溶剤に空気を噴出して混在させ、洗浄用溶剤の洗浄効果を向上させることができる。粘度コントローラ１によれば、循環ポンプ１１４の駆動源となる気体を供給する気体配管１１６を利用して洗浄用溶剤の洗浄能力を高めて、粘度コントローラ１のインキの通路を効果的に洗浄することができる。   As described above, in the viscosity controller 1 of the present embodiment, the cleaning nozzle 16 is connected to the gas pipe 116 that supplies the gas serving as the drive source of the circulation pump 114 via the branch pipe 156, and is used as the cleaning solvent. Air can be ejected and mixed to improve the cleaning effect of the cleaning solvent. According to the viscosity controller 1, the ink piping of the viscosity controller 1 is effectively cleaned by using the gas pipe 116 that supplies the gas that is the driving source of the circulation pump 114 to enhance the cleaning ability of the cleaning solvent. Can do.

なお、洗浄運転中においては、実施例で説明したように洗浄用ノズル１６に間欠的に空気を供給してもよいし、常に供給してもよい。また、電磁弁１８２に替えて流量調整弁を用いる等によって、洗浄運転中に空気の供給量を変化させるようにしてもよい。また、実施例では、洗浄用溶剤を貯留する洗浄容器１５１，１５２を２個設置する場合を例示して説明したが、３個以上設置してもよい。また、複数の粘度コントローラを用いる場合には、洗浄機構１５は、複数の粘度コントローラで共有されるものであってもよい。この場合、１つの洗浄機構１５によって複数の粘度コントローラのインキの通路を同時に並行して洗浄するようにしてもよいし、別々に順次洗浄するようにしてもよい。   During the cleaning operation, air may be intermittently supplied to the cleaning nozzle 16 as described in the embodiment or may be always supplied. Further, the air supply amount may be changed during the cleaning operation by using a flow rate adjusting valve instead of the electromagnetic valve 182. In the embodiment, the case where two cleaning containers 151 and 152 for storing the cleaning solvent are illustrated and described, but three or more cleaning containers may be installed. When a plurality of viscosity controllers are used, the cleaning mechanism 15 may be shared by a plurality of viscosity controllers. In this case, the ink paths of a plurality of viscosity controllers may be simultaneously cleaned in parallel by one cleaning mechanism 15, or may be sequentially cleaned separately.

１ 粘度コントローラ
１１ インキ循環機構
１３ 溶剤供給機構
１５ 洗浄機構
１６ 洗浄用ノズル
１７ 制御機構
１１０ 吸入管
１１０ａ 吸入口
１１２ 吐出管
１１２ａ 吐出口
１１４ 循環ポンプ
１１６ 気体配管
１５１，１５２ 洗浄容器
１６５ 第１保持部
１６６ 第２保持部 DESCRIPTION OF SYMBOLS 1 Viscosity controller 11 Ink circulation mechanism 13 Solvent supply mechanism 15 Cleaning mechanism 16 Cleaning nozzle 17 Control mechanism 110 Suction pipe 110a Suction port 112 Discharge pipe 112a Discharge port 114 Circulation pump 116 Gas piping 151, 152 Cleaning container 165 First holding part 166 Second holding part

Claims (5)

印刷機に供給するインキの粘度を調整する粘度コントローラであって、
前記インキを吸入する吸入管と該インキを吐出する吐出管と該インキを循環する循環ポンプと該循環ポンプの駆動源となる気体の供給がなされる気体配管とを有するインキ循環機構と、
該インキの粘度を検知して該インキを希釈する希釈用溶剤を該インキ循環機構に供給する溶剤供給機構と、
該インキの通路に洗浄用溶剤を供給する洗浄機構とを備え、
該洗浄機構は、該洗浄用溶剤に気体を混在させる洗浄用ノズルを備える粘度コントローラ。 A viscosity controller that adjusts the viscosity of the ink supplied to the printing press,
An ink circulation mechanism having a suction pipe for sucking the ink, a discharge pipe for discharging the ink, a circulation pump for circulating the ink, and a gas pipe for supplying a gas as a drive source of the circulation pump;
A solvent supply mechanism for detecting the viscosity of the ink and supplying a dilution solvent for diluting the ink to the ink circulation mechanism;
A cleaning mechanism for supplying a cleaning solvent to the ink passage;
The cleaning mechanism is a viscosity controller including a cleaning nozzle for mixing a gas with the cleaning solvent. 前記洗浄機構は、前記洗浄用溶剤を貯留する洗浄容器を複数備えている請求項１に記載の粘度コントローラ。   The viscosity controller according to claim 1, wherein the cleaning mechanism includes a plurality of cleaning containers for storing the cleaning solvent. 前記洗浄用ノズルは、前記気体を噴出する気体噴孔と、該気体噴孔がある位置に前記吸入管の吸入口を保持する保持部とを備える請求項１または２に記載の粘度コントローラ。   The viscosity controller according to claim 1, wherein the cleaning nozzle includes a gas nozzle that ejects the gas, and a holding unit that holds the suction port of the suction pipe at a position where the gas nozzle is located. 前記洗浄用ノズルは、前記気体配管に連通している請求項１〜３のいずれかに記載の粘度コントローラ。   The viscosity controller according to claim 1, wherein the cleaning nozzle communicates with the gas pipe. さらに、前記洗浄用溶剤をインキの通路へ供給する際に、前記気体配管から前記洗浄用ノズルへ気体を間欠的に供給する制御機構を備える請求項４に記載の粘度コントローラ。   The viscosity controller according to claim 4, further comprising a control mechanism that intermittently supplies gas from the gas pipe to the cleaning nozzle when supplying the cleaning solvent to the ink passage.
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