WO2014079078A1 - 一种配向膜列印机喷头的清洁方法及装置 - Google Patents

一种配向膜列印机喷头的清洁方法及装置 Download PDF

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Publication number
WO2014079078A1
WO2014079078A1 PCT/CN2012/085370 CN2012085370W WO2014079078A1 WO 2014079078 A1 WO2014079078 A1 WO 2014079078A1 CN 2012085370 W CN2012085370 W CN 2012085370W WO 2014079078 A1 WO2014079078 A1 WO 2014079078A1
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WIPO (PCT)
Prior art keywords
nozzle
alignment film
film printer
solution
cleaning
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.)
Ceased
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PCT/CN2012/085370
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English (en)
French (fr)
Inventor
宋玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/807,364 priority Critical patent/US20140299157A1/en
Publication of WO2014079078A1 publication Critical patent/WO2014079078A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • B41J2/16532—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head by applying vacuum only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16552—Cleaning of print head nozzles using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16585—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles for paper-width or non-reciprocating print heads

Definitions

  • This invention relates to the field of alignment film printers, and more particularly to a cleaning method and apparatus for preventing an alignment film printer head from clogging an orifice by dry droplets. Background technique
  • alignment film printers have been widely used in the coating process of TFT-LCD alignment films (Polyimides).
  • the working principle is as follows: The nozzle of the alignment film printer continuously sprays with high-speed and high-density droplets, so that the droplets fall on the surface of the TFT array substrate or the CF color film substrate, and the surface of the film is diffused by surface tension. The filming effect is achieved. Specifically, dense and tiny orifices are distributed on the nozzles of the alignment film printer, and the PI (polyimide) droplets are extruded from the nozzle holes on the nozzles by voltage-controlled deformation of the piezoelectric ceramics. , complete the printing action.
  • the problems with this alignment film printer are:
  • the nozzle hole on the nozzle is very small, when the machine of the alignment film printer is in an inoperative state, the nozzle hole is blocked due to the dryness of the PI liquid. When the alignment film printer machine is working again, the blocked nozzle holes cannot continue to spray the PI droplets, resulting in defects in printing quality. In addition, the defective substrate is peeled off from the PI film and re-filmed, resulting in prolonged production time and waste of PI liquid.
  • the technical problem to be solved by the present invention is to provide a cleaning method for an alignment film printer head.
  • the method and the device can effectively prevent the clogging phenomenon caused by the dripping of the alignment film printer nozzle; while improving the printing quality of the alignment film and the product yield, the grafting rate of the alignment film printer can be further improved and reduced Cost of production.
  • a cleaning method for an alignment film printer nozzle for automatically cleaning a nozzle of an alignment film printer wherein the method includes the following steps: timing according to a certain movement path The nozzle of the alignment film printer sprays a solution for dissolving droplets solidified on the nozzle orifice, and the solution is sprayed on all nozzles of the alignment film printer;
  • a vacuum suction operation is performed according to the moving path for sucking away the solution liquid covered by the surface of the nozzle.
  • the droplet is a mash
  • the solution is an N-mercaptopyrrolidone solvent.
  • the step of spraying the solution to the nozzle of the alignment film printer at a certain movement path timing and the step of performing the vacuum suction operation according to the movement path are alternately performed.
  • the step of spraying the solution to the nozzle of the alignment film printer according to a certain movement path timing includes:
  • the first supply line for supplying the dissolved liquid is controlled to be turned on at regular intervals, and the first supply line is controlled to be closed after the dissolved liquid is sprayed over all of the heads of the alignment film printer.
  • the droplet is a mash
  • the solution is an N-mercaptopyrrolidone solvent.
  • the first supply line for supplying the dissolving liquid is controlled to be opened at a certain time, and when the dissolving liquid is sprayed on all the nozzles of the alignment film printing machine, the first control is turned off.
  • the step of supplying the piping alternates with the step of performing the vacuum suction operation in accordance with the moving path.
  • the step of performing a vacuum suction operation according to the moving path includes:
  • the control of the second supply line is controlled after the dissolution of the surface of the entire nozzle surface is aspirated.
  • the droplet is a sputum
  • the solution is an N-mercaptopyrrolidone solvent.
  • the first supply line for supplying the dissolving liquid is controlled to be opened at a certain time, and when the dissolving liquid is sprayed on all the nozzles of the alignment film printing machine, the first control is turned off.
  • a cleaning device for an alignment film printer nozzle which is used for automatically cleaning a nozzle of an alignment film printer, wherein: the cleaning nozzle is installed in Disposed under the nozzle of the alignment film printer to spray the solution to the nozzle of the alignment film printer according to a certain movement path, and the cleaning nozzle sprays the solution on the alignment film printer All nozzles;
  • a vacuum nozzle is disposed under the nozzle of the alignment film printer for sucking the solution liquid covered by the surface of the nozzle according to the moving path after the cleaning nozzle sprays the solution;
  • the cleaning nozzle is attached to the vacuum nozzle, and is set as a plurality of groups;
  • the cleaning nozzle and the vacuum nozzle can alternately move according to the moving path.
  • the method further includes: a first supply line connected to the cleaning nozzle for supplying the solution;
  • a second supply line connected to the vacuum nozzle for forming a vacuum inside; wherein a solenoid valve is disposed in each of the first supply line and the second supply line.
  • the PLC controller controls the solenoid valve that opens the first supply line according to a certain time interval, and controls the shutdown of the first supply after the dissolved liquid is sprayed on all the nozzles of the alignment film printer
  • the solenoid valve of the pipeline controls the solenoid valve that opens the first supply line according to a certain time interval, and controls the shutdown of the first supply after the dissolved liquid is sprayed on all the nozzles of the alignment film printer
  • the solenoid valve of the pipeline controls the solenoid valve that opens the first supply line according to a certain time interval, and controls the shutdown of the first supply after the dissolved liquid is sprayed on all the nozzles of the alignment film printer
  • the PLC controller is further connected to a solenoid valve of the second supply line; the PLC controller is configured to control, in the PLC controller, to close the first supply line After the solenoid valve, the solenoid valve of the second supply line is controlled to open, and the vacuum nozzle sucks the dissolved liquid on the surface of the nozzle through the negative pressure in the second supply line.
  • a cleaning device for an alignment film printer nozzle which is used for automatically cleaning a nozzle of an alignment film printer, wherein: the cleaning nozzle is installed in Disposed under the nozzle of the alignment film printer to spray the solution to the nozzle of the alignment film printer according to a certain movement path, and the cleaning nozzle sprays the solution on the alignment film printer All nozzles;
  • a vacuum nozzle is disposed under the nozzle of the alignment film printer for sucking the solution liquid covered by the surface of the nozzle according to the moving path after the cleaning nozzle sprays the solution.
  • the method further includes: a first supply line connected to the cleaning nozzle for supplying the solution;
  • a second supply line connected to the vacuum nozzle for forming a vacuum inside; wherein a solenoid valve is disposed in each of the first supply line and the second supply line.
  • the PLC controller controls the solenoid valve that opens the first supply line according to a certain time interval, and controls the shutdown of the first supply after the dissolved liquid is sprayed on all the nozzles of the alignment film printer
  • the solenoid valve of the pipeline controls the solenoid valve that opens the first supply line according to a certain time interval, and controls the shutdown of the first supply after the dissolved liquid is sprayed on all the nozzles of the alignment film printer
  • the solenoid valve of the pipeline controls the solenoid valve that opens the first supply line according to a certain time interval, and controls the shutdown of the first supply after the dissolved liquid is sprayed on all the nozzles of the alignment film printer
  • the PLC controller is further connected to a solenoid valve of the second supply line; the PLC controller is configured to control open after the PLC controller controls to close the solenoid valve of the first supply line a solenoid valve of the second supply line, the vacuum nozzle sucking a solution of the surface of the nozzle through a negative pressure in the second supply line.
  • the cleaning nozzle is attached to the vacuum nozzle, and is set to be in multiple groups.
  • the cleaning nozzle and the vacuum nozzle can alternately move according to the moving path.
  • the cleaning method and device for the alignment film printer head provided by the invention have the following beneficial effects: dissolving the solidified PI liquid on the nozzle by spraying the dissolving liquid, and using the vacuum to absorb the residual PI liquid or the dissolving liquid to the nozzle Further cleaning can effectively prevent the clogging of the alignment film printer nozzle due to dry dripping. While improving the quality of the alignment film and the yield of the product, The grafting rate of the alignment film printer can be further improved, and the production cost can be further reduced.
  • FIG. 1 is a schematic flow chart showing a cleaning method of an alignment film printer head according to an embodiment of the present invention.
  • Fig. 2 is a schematic flow chart showing the cleaning method of the nozzle of the alignment film printer according to the embodiment of the present invention.
  • FIG. 3 is a block diagram showing the structure of a cleaning device for an alignment film printer head according to an embodiment of the present invention.
  • Fig. 4 is a view showing the positional distribution of the cleaning nozzle and the vacuum nozzle of the nozzle cleaning device of the alignment film printer according to the embodiment of the present invention.
  • Fig. 5 is a plan view showing the cleaning of the head by the nozzle cleaning device of the alignment film printer according to the embodiment of the present invention.
  • Fig. 6 is a plan view showing the moving path of the cleaning head and the vacuum nozzle of the nozzle cleaning device of the alignment film printer according to the embodiment of the present invention. detailed description
  • the cleaning method of the alignment film printer head of the embodiment of the present invention includes the following steps:
  • Step S10 spraying a solution solution to the nozzle of the alignment film printer according to a certain movement path timing to dissolve the droplets solidified on the nozzle orifice, and the solution spray is sprayed on the alignment film printer. All on the sprinkler.
  • Step S20 performing a vacuum suction operation according to the moving path for sucking away the dissolved liquid covered by the surface of the nozzle.
  • the dropping liquid sprayed from the nozzle hole of the alignment film printer head is PI liquid
  • the PI liquid is easy to dry or solidify, causing the nozzle hole to be blocked
  • the purpose of spraying the solution liquid is to dissolve the dried or solidified PI liquid.
  • the solution is an N-mercaptopyrrole solvent, and since it is a main component of the solvent in the PI solution, it can dissolve the dried or solidified PI solution.
  • the dispensing nozzle of the alignment film printer is sprayed with other drops, the corresponding solution can be used for dissolution to prevent or eliminate the clogging of the nozzle.
  • FIG. 2 it is a schematic flowchart of a method for cleaning a nozzle of an alignment film printer according to an embodiment of the present invention. Step S10 includes the following steps:
  • Step S101 controlling to open the first supply line for supplying the dissolved liquid at regular intervals.
  • the time refers to the time span of spraying the solution twice, which can be made according to the actual situation, and can refer to the cycle of the dryness of the drip and the length of dissolution of the drip.
  • periodic cycle control enables fully automated cleaning operations, saving on maintenance costs for labor, equipment, and more.
  • Step S102 according to a certain moving path, the solution is sprayed on all the nozzles of the alignment film printer.
  • the moving path can be set according to the actual use requirements, and the function of spraying the spraying point of the spraying solution can cover all the nozzles of the alignment film printing machine, so that the cleaning effect is more obvious.
  • the spraying point of the dissolving liquid can achieve coverage of all the spray heads by the spraying range, for example, the moving trajectory has a shape of a rectangle or a circle.
  • the prescribed movement path is set to facilitate the reciprocating spray action and the full range of coverage spray effects.
  • Step S103 controlling to close the first supply line. After the spraying operation is completed by the above-described moving path spraying point, the supply line can be closed, and the process proceeds to step S104, where the solution dissolves the mash which solidifies on the head.
  • Step S20 includes the following steps:
  • Step S201 controlling to open a second supply line for forming a vacuum inside during a certain period of time when the first supply line is controlled to be closed, wherein the end of the second supply line is connected with a vacuum nozzle and a negative pressure passing therethrough The solution of the surface of the nozzle is sucked away.
  • effective control of time can save the solution and improve the cleaning efficiency.
  • time can be controlled using a PLC device.
  • step S202 the PI liquid, the dissolving liquid or the reaction liquid or the like remaining on the surface of the head is sucked by vacuum suction, and the nozzle of the alignment film printer can be deeply cleaned.
  • the vacuum suction method also moves in accordance with the movement trajectory specified above.
  • the moving path of the suction vacuum is consistent with the spraying path of the dissolved liquid, and the negative pressure in the second supply line can absorb the liquid such as sputum, dissolved solution or reaction liquid remaining on the surface of all the nozzles. Achieve cleaning.
  • step S203 the process proceeds to step S203, and the second supply line is controlled to be closed.
  • each of the alignment film printers has an average of 3 times per day due to the drying of the PI liquid, which causes the nozzle holes to be blocked. It takes 0.5 hours to pass through the blocked nozzle holes each time, and wastes about 500 g of PI solution.
  • the annual grafting time of the alignment film printer can be 2190 hours, and the calculation formula is: 3*4*0.5*365;
  • the annual cost reduction due to the saving of PI liquid is about 20 million yuan.
  • the calculation formula is: 3*4*500*4*365.
  • the invention also discloses a cleaning device for an alignment film printing machine, which is used for automatically cleaning the nozzle of the alignment film printer.
  • FIG. 3 it is a structural block diagram of a cleaning device for the nozzle of the alignment film printer according to an embodiment of the present invention. It includes:
  • the cleaning nozzle 11 is installed below the alignment film printer head 2 (as shown in Fig. 4).
  • the heads 2 in this embodiment are provided in plurality and are arranged in a regular arrangement.
  • FIG. 5 it is a schematic diagram of cleaning the nozzle by the nozzle cleaning device of the alignment film printer according to an embodiment of the present invention.
  • the spray heads 2 for spraying the PI liquid are arranged in four rows and arranged in a staggered angle, and each of the spray heads 2 is provided with a plurality of spray holes 21.
  • a plurality of cleaning nozzles 11 are provided, and this embodiment is arranged in two rows of upper and lower rows, for a total of ten.
  • the distance between the two cleaning nozzles 11 is a certain distance.
  • the cleaning nozzle 11 is configured to spray the solution to the nozzle 2 of the alignment film printer at a certain movement path A, and the solution is sprayed on all the nozzles 2 of the alignment film printer.
  • the solution is a N-mercaptopyrrolidone solvent, and since the N-mercaptopyrrole solvent is a main component of the solvent in the PI solution, it can dissolve the dried or solidified PI solution. .
  • the cleaning device further includes a first supply line 111 connected to the cleaning nozzle for supplying a solution, and a solenoid valve 112 is disposed in the first supply line 111, and the battery valve 112 is connected to a PLC controller 13. among them:
  • the PLC controller 13 controls the opening of the solenoid valve 112 of the first supply line 111 at a certain time interval. At this time, each of the cleaning heads 11 can move according to the rectangular moving path A as shown in FIG. 5 and FIG. A plurality of spray points 110 are provided. Spray point 110 sprays the solution onto the moving path A and its adjacent area.
  • the moving path A refers to the movement track of the entire cleaning nozzle 11, which can be set according to the actual use, and the function is to enable the spraying range of the spraying point 110 of the dissolved liquid to cover all the nozzles of the alignment film printing machine. Make the effect of cleaning more obvious.
  • the dissolved liquid sprayed thereon can cover all the nozzles 2 of the alignment film printer.
  • the PLC controller 13 controls the solenoid valve 112 of the first supply line 111 to be closed, and the dissolved solution dissolves the sputum solidified on the nozzle.
  • the cleaning device further includes: a vacuum nozzle 12 disposed below the alignment film printer head 2.
  • the vacuum nozzle 12 in this embodiment is attached to the cleaning head 11 so that it can be moved by the same movement path A under the control of the same device, and the structure can be improved to improve the utilization rate.
  • the movement path of the vacuum suction nozzle 12 is the same as the movement path A of the cleaning head 11, and it is capable of sucking liquid such as PI liquid, dissolved liquid or reaction liquid remaining on the surface of all the nozzles, thereby achieving cleaning.
  • the cleaning device further includes a second supply line 121 connected to the vacuum nozzle 12 for forming a vacuum inside, and a solenoid valve 122 is disposed in the second supply line 121, and the battery valve 122 is also similar to the PLC controller 13 described above. connection. among them:
  • the PLC controller 13 controls to open the battery valve 122 in the second supply line 121 for a certain period of time during which the solenoid valve 112 in the first supply line 111 is closed, and connects the vacuum nozzle at the end of the second supply line 121. 12
  • the solution of the surface of the head 2 is sucked away by the negative pressure therein.
  • each of the vacuum nozzles 12 can be moved according to the rectangular moving path A as shown in FIG. 5 and FIG. 6, and the plurality of suction holes 120 provided thereon can absorb the residual path range of the moving path A and its adjacent area. Liquid.
  • the PLC controller 13 controls to turn off the second The solenoid valve 122 in the line 121 is supplied.
  • the PLC controller 13 controls the time for opening the solenoid valve 112 in the first supply line 111 to alternate with the time for controlling the opening of the solenoid valve 122 in the second supply line 121, that is, spraying the solution and vacuuming the operation.
  • the steps are alternated, which can provide more adequate cleaning time.
  • the cleaning device of the embodiment improves the grafting rate of the alignment film printer, and the cost saving effect is estimated as follows: Before the above cleaning device is used, each alignment film printer has an average of 3 times per day due to sputum drying. The nozzle is blocked, and it takes 0.5 hours to pass through the blocked nozzle every time, and about 500 g of mash is wasted.
  • the unit price of PI liquid is four yuan per gram. After the mass production, four alignment film prints are required to work simultaneously. On this basis, the grafting time of the alignment film printer can be increased by 2190 hours per year (calculation formula) : 3*4*0.5*365 );
  • the cleaning method and device for implementing the alignment film printer of the present invention have the following beneficial effects: the PU liquid which is solidified on the nozzle is dissolved by spraying the solution, and the nozzle is further subjected to vacuum absorption of the residual PI liquid or the solution.
  • the cleaning can effectively prevent the clogging of the alignment film printer nozzle due to dry dripping. While improving the quality of the alignment film and the yield of the product, the grafting rate of the alignment film printer can be further improved, and the production cost can be further reduced.

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  • Liquid Crystal (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Ink Jet (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

一种配向膜列印机喷头的清洁方法，用于自动清理配向膜列印机的喷头，包括以下步骤：按照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶解液，用以溶解凝固在喷头喷孔上的液滴，所述溶解液喷洒覆盖在所述配向膜列印机的全部喷头上；按照所述移动路径进行吸真空操作，用以吸走所述喷头表面覆盖的溶解液。一种配向膜列印机喷头的清洁装置。所述配向膜列印机喷头的清洁方法及装置，能够有效防止配向膜列印机喷头因滴液干涸导致的堵塞现象；在提升配向膜印刷品质，产品良率的同时，可进一步提升配向膜列印机的嫁动率，并降低生产成本。

Description

一种配向膜列印机喷头的清洁方法及装置 本申请要求于 2012 年 11 月 22 日提交中国专利局、 申请号为 201210477207.9 、 发明名称为 "一种配向膜列印机喷头的清洁方法及装置" 的中国专利申请的优先权， 上述专利的全部内容通过引用结合在本申请中。 技术领域
本发明涉及配向膜列印机领域， 尤其涉及一种用于防止配向膜列印机喷 头因液滴干涸而堵塞喷孔的清洁方法及装置。 背景技术
目前，配向膜列印机已广泛应用于 TFT-LCD的取向膜 (Polyimide)的涂布 工程中。 其作用原理是： 配向膜列印机的喷头以高速且高密度的液滴进行连 续喷洒， 使液滴落在 TFT阵列基板或 CF彩膜基板表面上， 经过表面张力的 扩散作用使膜面整平达到成膜效果。 具体地， 在配向膜列印机的喷头上分布 着密集而又微小的喷孔， 通过电压控制压电陶瓷的形变， 将 PI (聚酰亚胺） 液滴从喷头上的喷孔中挤出，完成印刷动作。该配向膜列印机存在的问题是：
1、 由于喷头上的喷孔很微小， 当配向膜列印机的机台处于未工作的状 态时， 会因为 PI液的干涸导致喷孔堵塞。 而当配向膜列印机机台再次工作 时， 堵塞的喷孔就会无法继续喷洒 PI液滴， 造成印刷品质缺陷。 此外， 有 缺陷的基板会被剥离 PI膜并重新制膜，造成制作时间的延长及 PI液的浪费。
2、 同时， 再次工作时需要对堵塞的喷孔进行改善作业， 浪费生产时间 和 PI液， 降低配向膜列印机机台的稼动率。
故， 有必要提供一种配向膜列印机喷头的清洁方法及装置， 以解决现有 技术所存在的问题。 发明内容
本发明所要解决的技术问题在于，提供一种配向膜列印机喷头的清洁方 法及装置， 能够有效防止配向膜列印机喷头因滴液干涸导致的堵塞现象； 在 提升配向膜印刷品质， 产品良率的同时， 可进一步提升配向膜列印机的嫁动 率， 并降低生产成本。
为了解决上述技术问题， 本发明采用的技术方案： 一种配向膜列印机喷 头的清洁方法， 用于自动清理配向膜列印机的喷头， 其中， 包括以下步骤： 按照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶解液， 用以 溶解凝固在喷头喷孔上的液滴， 所述溶解液喷洒覆盖在所述配向膜列印机的 全部喷头上；
按照所述移动路径进行吸真空操作， 用以吸走所述喷头表面覆盖的溶解 液。
其中， 所述液滴为 ΡΓ液；
所述溶解液为 N-曱基吡咯烷酮溶剂。
其中，所述按照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶 解液的步骤与所述按照所述移动路径进行吸真空操作的步骤交替进行。
其中，所述按照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶 解液的步骤包括：
每隔一定的时间控制打开用以供给溶解液的第一供给管路， 当所述溶解 液喷洒覆盖在所述配向膜列印机的全部喷头上后，控制关闭所述第一供给管 路。
其中， 所述液滴为 ΡΓ液；
所述溶解液为 N-曱基吡咯烷酮溶剂。
其中， 所述每隔一定的时间控制打开用以供给溶解液的第一供给管路， 当所述溶解液喷洒覆盖在所述配向膜列印机的全部喷头上后，控制关闭所述 第一供给管路的步骤与所述按照所述移动路径进行吸真空操作的步骤交替 进行。
其中， 所述按照所述移动路径进行吸真空操作的步骤包括：
在控制关闭所述第一供给管路的一定时间内，控制打开内部形成有真空 的第二供给管路，所述第二供给管路的末端连接有真空吸嘴并通过其中的负 压吸走所述喷头表面的溶解液； 当吸走所述全部喷头表面的溶解液后， 控制关闭所述第二供给管路。 其中， 所述液滴为 ΡΓ液；
所述溶解液为 N-曱基吡咯烷酮溶剂。
其中， 所述每隔一定的时间控制打开用以供给溶解液的第一供给管路， 当所述溶解液喷洒覆盖在所述配向膜列印机的全部喷头上后，控制关闭所述 第一供给管路的步骤与所述在控制关闭所述第一供给管路的一定时间内，控 制打开内部形成有真空的第二供给管路， 所述第二供给管路的末端连接有真 空吸嘴并通过其中的负压吸走所述喷头表面的溶解液， 当吸走所述全部喷头 表面的溶解液后， 控制关闭所述第二供给管路的步骤交替进行。
为解决上述技术问题， 本发明采用的另一种技术方案： 一种配向膜列印 机喷头的清洁装置， 用于自动清理配向膜列印机的喷头， 其中， 包括： 清洗喷头， 装设在配向膜列印机喷头的下方， 用以按照一定的移动路径 定时向所述配向膜列印机的喷头喷洒溶解液， 所述清洗喷头将所述溶解液喷 洒在所述配向膜列印机的全部喷头上；
真空吸嘴， 装设在所述配向膜列印机喷头的下方， 用以在所述清洗喷头 喷洒所述溶解液后， 按照所述移动路径将所述喷头表面覆盖的溶解液吸走； 所述清洗喷头与所述真空吸嘴贴合在一起， 设为多组；
所述清洗喷头及所述真空吸嘴可按照所述移动路径进行交替运动。 其中， 还包括： 与所述清洗喷头相连接用以供给所述溶解液的第一供给 管路；
与所述真空吸嘴相连接用以在内部形成真空的第二供给管路； 其中， 在所述第一供给管路和所述第二供给管路中分别设置电磁阀。
其中， 还包括与所述第一供给管路的电磁阀相连接的 PLC控制器； 其 中，
所述 PLC控制器按照一定的时间间隔控制打开所述第一供给管路的电 磁阀， 当所述溶解液喷洒在所述配向膜列印机的全部喷头上后， 控制关闭所 述第一供给管路的电磁阀。
其中， 所述 PLC控制器还与所述第二供给管路的电磁阀相连接； 所述 PLC控制器用以在所述 PLC控制器控制关闭所述第一供给管路的 电磁阀后， 控制打开所述第二供给管路的电磁阀， 所述真空吸嘴通过所述第 二供给管路中的负压吸走所述喷头表面的溶解液。
为解决上述技术问题， 本发明采用的另一种技术方案： 一种配向膜列印 机喷头的清洁装置， 用于自动清理配向膜列印机的喷头， 其中， 包括： 清洗喷头， 装设在配向膜列印机喷头的下方， 用以按照一定的移动路径 定时向所述配向膜列印机的喷头喷洒溶解液， 所述清洗喷头将所述溶解液喷 洒在所述配向膜列印机的全部喷头上；
真空吸嘴， 装设在所述配向膜列印机喷头的下方， 用以在所述清洗喷头 喷洒所述溶解液后， 按照所述移动路径将所述喷头表面覆盖的溶解液吸走。
其中， 还包括： 与所述清洗喷头相连接用以供给所述溶解液的第一供给 管路；
与所述真空吸嘴相连接用以在内部形成真空的第二供给管路； 其中， 在所述第一供给管路和所述第二供给管路中分别设置电磁阀。
其中， 还包括与所述第一供给管路的电磁阀相连接的 PLC控制器； 其 中，
所述 PLC控制器按照一定的时间间隔控制打开所述第一供给管路的电 磁阀， 当所述溶解液喷洒在所述配向膜列印机的全部喷头上后， 控制关闭所 述第一供给管路的电磁阀。
其中， 所述 PLC控制器还与所述第二供给管路的电磁阀相连接； 所述 PLC控制器用以在所述 PLC控制器控制关闭所述第一供给管路的 电磁阀后， 控制打开所述第二供给管路的电磁阀， 所述真空吸嘴通过所述第 二供给管路中的负压吸走所述喷头表面的溶解液。
其中， 所述清洗喷头与所述真空吸嘴贴合在一起， 设为多组。
其中， 所述清洗喷头及所述真空吸嘴可按照所述移动路径进行交替运 动。
本发明所提供的配向膜列印机喷头的清洁方法及装置， 具有如下有益效 果： 通过喷洒溶解液对喷头上凝固的 PI液进行溶解， 并使用真空吸取残留 PI液或溶解液的方式对喷头进行进一步的清洁，可有效防止配向膜列印机喷 头因滴液干涸导致的堵塞现象。 在提升配向膜印刷品质， 产品良率的同时， 可以进一步提升配向膜列印机的嫁动率， 并使生产成本进一步降低。 附图说明
图 1是本发明实施例的配向膜列印机喷头的清洁方法的流程概图。 图 2是本发明实施例的配向膜列印机喷头的清洁方法的具体流程示意 图。
图 3是本发明实施例的配向膜列印机喷头的清洁装置的结构框图。 图 4是本发明实施例的配向膜列印机喷头清洁装置的清洗喷头和真空吸 嘴的位置分布示意图。
图 5是本发明实施例的配向膜列印机喷头清洁装置对喷头进行清洗的平 面示意图。
图 6是本发明实施例的配向膜列印机喷头清洁装置的清洗喷头和真空吸 嘴移动路径的平面示意图。 具体实施方式
下面参考附图对本发明的优选实施例进行描述。
如图 1所示，本发明实施例的配向膜列印机喷头的清洁方法包括以下步 骤：
步骤 S10, 按照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶 解液， 用以溶解凝固在喷头喷孔上的液滴， 所述溶解液喷洒覆盖在所述配向 膜列印机的全部喷头上。
步骤 S20, 按照所述移动路径进行吸真空操作， 用以吸走所述喷头表面 覆盖的溶解液。
其中， 由于配向膜列印机喷头的喷孔喷出的滴液为 PI液， 而 PI液极易 干涸或凝固导致喷孔堵塞， 喷洒溶解液的目的是对干涸或凝固的 PI液进行 溶解。 本实施例中， 溶解液为 N-曱基吡咯綻酮溶剂， 由于其为 PI液中溶剂 的主要组分， 可以对干涸或凝固的 PI液起到溶解的作用。 当然， 若配向膜 列印机喷头喷洒的为其他滴液， 可使用相应的溶解液进行溶解， 起到防止或 消除喷头堵塞的作用不变。 如图 2所示， 为本发明实施例的配向膜列印机喷头清洁方法的具体流程 示意图， 步骤 S10包括如下步骤：
步骤 S101 , 每隔一定的时间控制打开用以供给溶解液的第一供给管路。 具体实施时， 该时间是指两次喷洒溶解液的时间跨度， 其可以根据实际情况 进行制定， 可以参考滴液干涸的周期以及对干涸滴液进行溶解时间长短。 实 施周期性循环控制可以实现全自动化的清洁作业， 节省人力、 设备等的维护 成本。
步骤 S102, 按照一定的移动路径， 溶解液喷洒覆盖在配向膜列印机的 全部喷头上。 移动路径可以根据实际使用需要进行设定， 其作用是使喷洒溶 解液的喷洒点的喷洒范围能够覆盖在配向膜列印机的全部喷头上，使清理的 效果更明显。
本实施例中， 按照一定的轨迹进行喷洒运动时， 溶解液的喷洒点可实现 其喷洒范围对全部喷头的覆盖， 例如， 所述移动轨迹呈矩形或圆形等形状。 设置规定的移动路径， 便于实施往复的喷洒作用， 以及全范围覆盖喷洒的作 用。
步骤 S103, 控制关闭第一供给管路。 当按上述的移动路径喷洒点完成 喷洒作业后， 便可对供给管路进行关闭， 转入步骤 S104, 溶解液将凝固在 喷头上的 ΡΓ液溶解。
步骤 S20包括以下步骤：
步骤 S201 , 在控制关闭第一供给管路的一定时间内， 控制打开用于在 内部形成有真空的第二供给管路， 第二供给管路的末端连接有真空吸嘴并通 过其中的负压吸走所述喷头表面的溶解液。 该步骤中通过对时间的有效管 控， 能够起到节约溶解液， 并提升清洁效率的作用。 实施时， 可以使用 PLC 设备对时间进行管控。
步骤 S202, 使用真空吸取的方式对喷头表面残留的 PI液、溶解液或反 应液等进行吸取， 其能够对配向膜列印机的喷头进行深度清洁。 实施时， 真 空吸取的方式也按照上述规定的移动轨迹进行运动。 本实施例中， 吸取真空 的运动路径与溶解液的喷洒路径一致，通过所述第二供给管路中的负压可以 吸走全部喷头表面上残留的 ΡΓ液、 溶解液或反应液等液体， 实现清洁。 步骤 S202完成后， 转入步骤 S203, 控制关闭第二供给管路。
其中， 通过该清洁方式提升配向膜列印机的嫁动率， 对成本的节约效果 估算如下。 例如， 在未采用如上清洗方式前， 每台配向膜列印机平均每天有 3次因 PI液干涸而导致喷孔堵塞，每次对堵塞的喷孔进行疏通作用通过需要 0.5小时， 并浪费大约 500g的 PI液。
假设 PI液的单价为每克四元， 量产后需要有四台配向膜列印同时进行 工作
, 在此基础上， 每年可实现提升配向膜列印机的嫁动时间为 2190小时， 计 算公式： 3*4*0.5*365;
每年因节省 PI 液而降低的成本约为二千万元， 计算公式： 3*4*500*4*365。
本发明还公开了一种配向膜列印机的清洗装置， 用于自动清理配向膜列 印机的喷头， 参见图 3, 为本发明实施例配向膜列印机喷头的清洁装置的结 构框图， 其包括：
清洗喷头 11 , 装设在配向膜列印机喷头 2的下方 （如图 4所示）。 本实 施例中的喷头 2设置为多个， 且进行规则排布。 如图 5所示， 为本发明实施 例配向膜列印机喷头清洁装置对喷头进行清洗的示意图。 用于喷洒 PI液的 喷头 2设置为四排， 且交错一定的角度整齐排列， 每个喷头 2上均布置有多 个喷孔 21。
清洗喷头 11设置多个， 本实施例设置为上下两排排布， 共计十个。 相 邻两个清洗喷头 11之间隔有一定的距离。
清洗喷头 11用以按照一定的移动路径 A定时向配向膜列印机的喷头 2 喷洒溶解液， 溶解液喷洒在配向膜列印机的全部喷头 2上。 其中， 由于配向 膜列印机喷头的喷孔喷出的滴液为 ΡΓ液， 而 PI液极易干涸或凝固导致喷孔 堵塞， 喷洒溶解液的目的是对干涸或凝固的 PI液进行溶解。 本实施例中， 溶解液为 N-曱基吡咯綻酮溶剂， 由于 N-曱基吡咯綻酮溶剂为 PI液中溶剂的 主要组分， 因此可以对干涸或凝固的 PI液起到溶解的作用。 若配向膜列印 机喷头喷洒的为其他滴液， 可使用相应的溶解液进行溶解， 同样能够起到防 止或消除喷头堵塞的作用。 进一步的， 清洗装置还包括与所述清洗喷头相连用以供给溶解液的第一 供给管路 111 ,在第一供给管路 111中设置电磁阀 112, 电池阀 112与一 PLC 控制器 13连接。 其中：
PLC控制器 13按照一定的时间间隔控制打开第一供给管路 111的电磁 阀 112, 此时， 每一个清洗喷头 11可按照如图 5、 图 6所示长方形的移动路 径 A进行运动， 其上设置多个喷洒点 110。 喷洒点 110可将溶解液喷洒在移 动路径 A及其相邻的区域范围上。 其中， 移动路径 A指整个清洗喷头 11的 运动轨迹， 其可以根据实际使用需要进行设定， 其作用是使溶解液的喷洒点 110的喷洒范围能够覆盖在配向膜列印机的全部喷头上， 使清理的效果更明 显。
本实施例中， 图 5中的十个清洗喷头 11按逆时针方向移动一周时， 其 所喷洒出的溶解液能够覆盖配向膜列印机的全部喷头 2上。喷洒完成后， PLC 控制器 13控制关闭第一供给管路 111的电磁阀 112,溶解液对凝固在喷头上 的 ΡΓ液进行溶解。
清洗装置还包括： 真空吸嘴 12, 装设在配向膜列印机喷头 2的下方。 本 实施例中的真空吸嘴 12与上述清洗喷头 11贴合在一起， 使其能够在同一设 备的控制下按相同的移动路径 A进行移动， 筒化结构， 提升利用率。
本实施例中，真空吸嘴 12的运动路径与清洗喷头 11的运动路径 A—致， 其能够对全部喷头表面残留的 PI液、 溶解液或反应液等液体进行吸取， 实 现清洁。
进一步的， 清洗装置还包括与真空吸嘴 12相连用以在内部形成真空的 第二供给管路 121 , 在第二供给管路 121中设置电磁阀 122, 电池阀 122同 样与上述 PLC控制器 13连接。 其中：
PLC控制器 13在控制关闭第一供给管路 111中的电磁阀 112的一定时 间内，控制打开第二供给管路 121中的电池阀 122,连接在第二供给管路 121 末端的真空吸嘴 12通过其中的负压吸走喷头 2表面的溶解液。 此时， 每一 个真空吸嘴 12可按照如图 5、 图 6所示长方形的移动路径 A进行运动， 其 上设置的多个吸孔 120可吸走移动路径 A及其相邻区域范围上残留的液体。 当真空吸嘴 12吸走全部喷头 2表面的液体后， PLC控制器 13控制关闭第二 供给管路 121中的电磁阀 122。
优选的， PLC控制器 13控制开启第一供给管路 111中的电磁阀 112的 时间与控制开启第二供给管路 121中的电磁阀 122的时间交替进行，也就是 喷洒溶解液和吸真空操作的步骤为交替进行， 其可以提供更充分的清洗时 间。
本实施例的清洗装置提升配向膜列印机的嫁动率，对成本的节约效果估 算如下： 在未采用如上清洗装置前， 每台配向膜列印机平均每天有 3 次因 ΡΓ液干涸而导致喷孔堵塞， 每次对堵塞的喷孔进行疏通作用通过需要 0.5小 时， 并浪费大约 500g的 ΡΓ液。
假设 PI液的单价为每克四元， 量产后需要有四台配向膜列印同时进行 工作， 在此基础上， 每年可实现提升配向膜列印机的嫁动时间为 2190小时 (计算公式: 3*4*0.5*365 );
每年因节省 PI 液而降低的成本约为二千万元 （计算公式： 3*4*500*4*365 )„
实施本发明的配向膜列印机的清洗方法及装置， 具有如下有益效果， 通 过喷洒溶解液对喷头上凝固的 PI液进行溶解， 并使用真空吸取残留 PI液或 溶解液的方式对喷头进行进一步的清洁， 可有效防止配向膜列印机喷头因滴 液干涸导致的堵塞现象。 在提升配向膜印刷品质， 产品良率的同时， 可以进 一步提升配向膜列印机的嫁动率， 并使生产成本进一步降低。
以上所揭露的仅为本发明较佳实施例而已， 当然不能以此来限定本发明 之权利范围， 因此等同变化， 仍属本发明所涵盖的范围。

Claims

权 利 要 求
1、 一种配向膜列印机喷头的清洁方法， 用于自动清理配向膜列印机的 喷头， 其中， 包括以下步骤：
按照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶解液， 用以 溶解凝固在喷头喷孔上的液滴， 所述溶解液喷洒覆盖在所述配向膜列印机的 全部喷头上；
按照所述移动路径进行吸真空操作， 用以吸走所述喷头表面覆盖的溶解 液。
2、 如权利要求 1所述的配向膜列印机喷头的清洁方法， 其中， 所述液 滴为 PI液；
所述溶解液为 N-曱基吡咯烷酮溶剂。
3、 如权利要求 2所述的配向膜列印机喷头的清洁方法， 其中， 所述按 照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶解液的步骤与所 述按照所述移动路径进行吸真空操作的步骤交替进行。
4、 如权利要求 1所述的配向膜列印机喷头的清洁方法， 其中， 所述按 照一定的移动路径定时向所述配向膜列印机的喷头喷洒溶解液的步骤包括： 每隔一定的时间控制打开用以供给溶解液的第一供给管路， 当所述溶解 液喷洒覆盖在所述配向膜列印机的全部喷头上后，控制关闭所述第一供给管 路。
5、 如权利要求 4所述的配向膜列印机喷头的清洁方法， 其中， 所述液 滴为 PI液；
所述溶解液为 N-曱基吡咯烷酮溶剂。
6、 如权利要求 4所述的配向膜列印机喷头的清洁方法， 其中， 所述每 隔一定的时间控制打开用以供给溶解液的第一供给管路， 当所述溶解液喷洒 覆盖在所述配向膜列印机的全部喷头上后，控制关闭所述第一供给管路的步 骤与所述按照所述移动路径进行吸真空操作的步骤交替进行。
7、 如权利要求 4所述的配向膜列印机喷头的清洁方法， 其中， 所述按 照所述移动路径进行吸真空操作的步骤包括：
在控制关闭所述第一供给管路的一定时间内，控制打开内部形成有真空 的第二供给管路，所述第二供给管路的末端连接有真空吸嘴并通过其中的负 压吸走所述喷头表面的溶解液；
当吸走所述全部喷头表面的溶解液后， 控制关闭所述第二供给管路。
8、 如权利要求 7所述的配向膜列印机喷头的清洁方法， 其中， 所述液 滴为 PI液；
所述溶解液为 N-曱基吡咯烷酮溶剂。
9、 如权利要求 7所述的配向膜列印机喷头的清洁方法， 其中， 所述每 隔一定的时间控制打开用以供给溶解液的第一供给管路， 当所述溶解液喷洒 覆盖在所述配向膜列印机的全部喷头上后，控制关闭所述第一供给管路的步 骤与所述在控制关闭所述第一供给管路的一定时间内，控制打开内部形成有 真空的第二供给管路， 所述第二供给管路的末端连接有真空吸嘴并通过其中 的负压吸走所述喷头表面的溶解液， 当吸走所述全部喷头表面的溶解液后， 控制关闭所述第二供给管路的步骤交替进行。
10、 一种配向膜列印机喷头的清洁装置， 用于自动清理配向膜列印机的 喷头， 其中， 包括：
清洗喷头， 装设在配向膜列印机喷头的下方， 用以按照一定的移动路径 定时向所述配向膜列印机的喷头喷洒溶解液， 所述清洗喷头将所述溶解液喷 洒在所述配向膜列印机的全部喷头上；
真空吸嘴， 装设在所述配向膜列印机喷头的下方， 用以在所述清洗喷头 喷洒所述溶解液后， 按照所述移动路径将所述喷头表面覆盖的溶解液吸走； 所述清洗喷头与所述真空吸嘴贴合在一起， 设为多组；
所述清洗喷头及所述真空吸嘴可按照所述移动路径进行交替运动。
11、 如权利要求 10所述的配向膜列印机喷头的清洁装置， 其中， 还包 括： 与所述清洗喷头相连接用以供给所述溶解液的第一供给管路；
与所述真空吸嘴相连接用以在内部形成真空的第二供给管路； 其中， 在所述第一供给管路和所述第二供给管路中分别设置电磁阀。
12、 如权利要求 11所述的配向膜列印机喷头的清洁装置， 其中， 还包 括与所述第一供给管路的电磁阀相连接的 PLC控制器； 其中，
所述 PLC控制器按照一定的时间间隔控制打开所述第一供给管路的电 磁阀， 当所述溶解液喷洒在所述配向膜列印机的全部喷头上后， 控制关闭所 述第一供给管路的电磁阀。
13、 如权利要求 12所述的配向膜列印机喷头的清洁装置， 其中， 所述 PLC控制器还与所述第二供给管路的电磁阀相连接；
所述 PLC控制器用以在所述 PLC控制器控制关闭所述第一供给管路的 电磁阀后， 控制打开所述第二供给管路的电磁阀， 所述真空吸嘴通过所述第 二供给管路中的负压吸走所述喷头表面的溶解液。
14、 一种配向膜列印机喷头的清洁装置， 用于自动清理配向膜列印机的 喷头， 其中， 包括：
清洗喷头， 装设在配向膜列印机喷头的下方， 用以按照一定的移动路径 定时向所述配向膜列印机的喷头喷洒溶解液， 所述清洗喷头将所述溶解液喷 洒在所述配向膜列印机的全部喷头上；
真空吸嘴， 装设在所述配向膜列印机喷头的下方， 用以在所述清洗喷头 喷洒所述溶解液后， 按照所述移动路径将所述喷头表面覆盖的溶解液吸走。
15、 如权利要求 14所述的配向膜列印机喷头的清洁装置， 其中， 还包 括： 与所述清洗喷头相连接用以供给所述溶解液的第一供给管路；
与所述真空吸嘴相连接用以在内部形成真空的第二供给管路； 其中， 在所述第一供给管路和所述第二供给管路中分别设置电磁阀。
16、 如权利要求 15所述的配向膜列印机喷头的清洁装置， 其中， 还包 括与所述第一供给管路的电磁阀相连接的 PLC控制器； 其中，
所述 PLC控制器按照一定的时间间隔控制打开所述第一供给管路的电 磁阀， 当所述溶解液喷洒在所述配向膜列印机的全部喷头上后， 控制关闭所 述第一供给管路的电磁阀。
17、 如权利要求 16所述的配向膜列印机喷头的清洁装置， 其中， 所述 PLC控制器还与所述第二供给管路的电磁阀相连接；
所述 PLC控制器用以在所述 PLC控制器控制关闭所述第一供给管路的 电磁阀后， 控制打开所述第二供给管路的电磁阀， 所述真空吸嘴通过所述第 二供给管路中的负压吸走所述喷头表面的溶解液。
18、 如权利要求 17所述的配向膜列印机喷头的清洁装置， 其中， 所述 清洗喷头与所述真空吸嘴贴合在一起， 设为多组。
19、 如权利要求 17所述的配向膜列印机喷头的清洁装置， 其中， 所述 清洗喷头及所述真空吸嘴可按照所述移动路径进行交替运动。
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