KR20100041466A - A cleaning device, a cleaning system and a cleaning method for removing foreign materials in a nozzle device - Google Patents

Abstract

PURPOSE: A cleaning apparatus for removing foreign materials of a nozzle device is provided to reduce repairing cost and replacing time of a nozzle by controlling damage to a discharging unit. CONSTITUTION: A cleaning apparatus for removing foreign materials of a nozzle device comprises a cleaning liquid vessel(266), a cleansing roller(262), a drive unit(263), and a plurality of pressing devices(290a,290b). The cleansing roller installs to the cleaning liquid vessel to be possible to rotate. The drive unit is connected to one side of the cleansing roller. The cleansing roller is driven. A plurality of pressing devices pressurizes the surface of the cleansing roller in the washing solution(264a). The foreign material spreads on the surface of the cleansing roller.

Description

A cleaning device, a cleaning system and a cleaning method for removing foreign materials in a nozzle device

The present invention relates to a cleaning device, a cleaning system, and a cleaning method for removing foreign matter from the nozzle device. More specifically, the present invention relates to fine foreign materials, residual ink, or residual coating liquid adhering to the discharge portion of the nozzle apparatus (hereinafter, referred to as "foreign substances" collectively referred to as "fine foreign materials, residual ink, and residual coating liquid"). Cleaning device for first cleaning using a cleaning roller and a cleaning liquid, and removing foreign materials remaining in the cleaning roller by using a plurality of pressing devices in a second manner to remove foreign matters from the nozzle device, which can significantly improve cleaning power. The present invention relates to a cleaning system and a cleaning method.

Generally, in order to manufacture an electronic circuit component or a flat panel display (FPD) such as a plasma display panel (PDP) or a liquid crystal display panel (LCD), for example, a photoresist (PR) liquid or Electrodes on a glass surface or on a work piece such as a printed circuit board (PCB) using metal pastes such as copper (Cu), silver (Ag), aluminum (Al), etc. ) Or patterns such as dots.

As a method for forming the above-described constant pattern, for example, a method of directly patterning a constant pattern on a workpiece using an inkjet head having a plane nozzle for ejecting ink droplets is used. In addition, another method for forming the above-described constant pattern includes a workpiece using, for example, a coating device having a nozzle dispenser or a slit die (or a slit nozzle) for applying a coating liquid onto the workpiece. The method of forming a coating liquid in a constant pattern on the image is used. In the following, if necessary, the flat nozzle, the nozzle dispenser and the slit die may be collectively referred to as a "nozzle apparatus".

1A is a schematic perspective view of a planar nozzle used in an inkjet printing apparatus according to the prior art.

Referring to FIG. 1A, a plurality of inkjet heads 120 may be used in the inkjet printing apparatus according to the prior art, and the plurality of inkjet heads 120 may be implemented in the form of nozzles each having a plurality of discharge ports. In particular, a planar nozzle in which a nozzle member having a plurality of ink ejection openings as a respective inkjet head 120 is a planar type is currently developed and used experimentally.

Referring back to FIG. 1A, the planar nozzle 120 according to the related art is composed of a nozzle unit 124 having a body portion 122 and a plurality of ink discharge ports 126. The flat nozzle 120 is mounted to the gantry 130 and used. In the prior art shown in FIG. 1A, the planar nozzle 120 is exemplarily shown mounted to the bottom of the gantry 130, but those skilled in the art will appreciate that the planar nozzle 120 is mounted to the side of the gantry 130. It will be appreciated that it may be used. In addition, although only one ink ejection opening 126 is shown in FIG. 1A, those skilled in the art will fully understand that a plurality of ink ejection openings 126 are formed along the longitudinal direction of the nozzle member 124.

The ink used for the above-mentioned plane nozzle 120 is typically various kinds of photoresist (PR) liquids or metal pastes (hereinafter collectively referred to as "inks"). In addition, the plurality of ink ejecting openings 126 of the planar nozzle 120 each have a narrow diameter of approximately 50 to 100 µm. Therefore, when ink is continuously supplied and used in the planar nozzle 120 or when used intermittently due to an idle time, the solvent contained in the ink is volatilized, and the residual ink 128 is discharged through the ink discharge port 126. The ink ejection opening 126 may be deformed by solidifying or curing at the edge of the < RTI ID = 0.0 > In addition, the size of the ink ejection opening 126 may be changed even when fine foreign materials 128 such as dust adhere to the ink ejection opening 126. In this case, a problem arises in that ink droplets of uniform size are hardly formed from the ink discharge port 126 or difficult to maintain a constant viscosity. Particularly, in the planar nozzle 120, when the ink is resumed after the use of the ink is stopped, the ink is completely solidified or cured so that the remaining ink and the fine foreign matter 128 completely block the ink discharge port 126 so that the ink cannot be discharged. There is a problem that the flat nozzle 120 is broken or repaired.

Figure 1b is a perspective view schematically showing a nozzle apparatus according to the prior art.

Referring to FIG. 1B, the nozzle apparatus 120 according to the related art includes a first lip 122 and a second lip 124 provided to face the first lip 122. A chamber 128 provided between the first lip 122 and the second lip 124 to store a plating liquid; And a plurality of liquid-liquid discharge ports 126 or slits 126 (hereinafter, referred to as a plurality of liquid-liquid discharge ports 126 or slits 126 for discharging the liquid stored in the chamber 128). It includes). The upper or one side of the first lip 122 and / or the second lip 124 is provided with a liquid supply port (not shown) through which the liquid flows from the liquid supply device (not shown).

Figure 1c is a perspective view showing in detail the nozzle portion and the foreign matter attached thereto of the nozzle device according to the prior art shown in Figure 1b.

Referring to FIGS. 1B and 1C, the nozzle apparatus 120 supplies the coating liquid, so that the foreign material 128 remains in the nozzle unit 126 (a plurality of nozzle holes 126 are shown in FIG. 1C). do. When the coating liquid is subsequently supplied without removing the foreign matter 128, it is difficult to supply a certain amount of the coating liquid by the foreign material 128, or the coating liquid flows along the residual coating liquid direction, thereby supplying the coating liquid at a desired position. If this is not done, or in severe cases, the nozzle unit 126 may be blocked, such that the supply of the coating liquid may be impossible.

1A to 1C described above, the plurality of ink ejection openings 126 of the planar nozzle 120 or the nozzle portion 126 of the nozzle apparatus 120 (hereinafter, the plurality of ink ejection openings 126). ) And the nozzle unit 126 collectively are used to clean the foreign matter 128 of the "discharge unit 126".

One cleaning method is a method in which a user manually cleans the discharge part 126 of the nozzle device 120. When using such a manual cleaning method, there is a disadvantage that the foreign matter 128 attached to the discharge part 126 having a fine size is not sufficiently cleaned.

Another cleaning method is to clean using a cleaning field using a cleaning roller as shown in FIG. 1D. This cleaning method was filed in the Korean Patent Application No. 10-2003-0088618 (Applicant: LG Philips LCD Co., Ltd.) on December 3, 2003, entitled "Nozzle Cleaning Device", and issued on June 13, 2005. As disclosed in Korean Patent Publication No. 10-2005-0055410 (hereinafter referred to as "public patent '410").

1D, the nozzle cleaning apparatus according to the related art includes a cleaning roller 162 for cleaning the nozzle 154 of the spinless coater 152; A port 166 containing a cleaning liquid 164a for cleaning the cleaning roller 162; A cover portion 167 having an opening to insert the spinless nozzle 154 and installed to cover the port 166; A cleaning liquid supply nozzle 168 for supplying the cleaning liquid 164a to the port 166; A brush 180 for cleaning the cleaning roller 162; A drying unit 170 for drying the cleaning liquid 164 on the cleaning roller 162; And a discharge part 190 for discharging the contaminated cleaning liquid 164a to the outside. The cleaning roller 162 directly contacts the spinless nozzle 154 to remove the photoresist 156 remaining in the spinless nozzle 154. To this end, the cleaning roller 162 rotates in the direction of the arrow to flow the photoresist 156 injected from the spinless nozzle 154 in the direction of the arrow. At this time, the center of rotation of the cleaning roller 162 is located below the surface of the cleaning liquid 164a and is approximately 2/3 locked in the three semen 164a. The port 166 contains a cleaning liquid 164a for cleaning the cleaning roller 162 contaminated by the contaminants removed from the spinless nozzle 154. The cover part 167 prevents the evaporated cleaning steam 164b from escaping to the outside when the cleaning liquid 164a contained in the port 166 evaporates. The cleaning steam 164b accumulated by the cover part 167 prevents the spinless nozzle 154 from drying. Accordingly, it is possible to prevent the inlet of the spinless nozzle 154 from being blocked by the photoresist 156. The cleaning liquid supply nozzle 168 supplies the cleaning liquid 164a from the outside so that the cleaning liquid 164a contained in the port 166 is kept constant. The brush 180 cleans the pot resist 156 remaining in the cleaning roller 162 in conjunction with the cleaning roller 162. The brush 180 is installed adjacent to the cleaning roller 162 to rotate the pot resist 156 remaining in the cleaning roller 162 while rotating in the opposite direction to the cleaning roller 180 by interlocking with the cleaning roller 162. Remove Accordingly, the contaminants remaining around the cleaning roller 162 can be removed. In addition, the drying unit 170 applies heat to the cleaning roller 162 or sprays air or the like to dry the cleaning liquid 164a remaining in the cleaned cleaning roller 162. The discharge unit 190 serves to discharge the contaminated cleaning liquid 164a to the outside at predetermined time intervals while cleaning the cleaning roller 162. Reference numerals used in FIG. 1D used the same reference numerals as those shown in FIG. 4 of Publication 410.

The nozzle cleaning apparatus disclosed in the aforementioned Patent No. 410 uses a drying unit 170 for drying the cleaning liquid 164 on the cleaning roller 162. Therefore, when the cleaning roller 162 comes into contact with the spinless nozzle 154, the photoresist 156 remaining in the spinless nozzle 154 is not washed, but scraped off, so that the resist 156 is not completely removed. can not do it.

In addition, in the nozzle cleaning apparatus disclosed in Patent Publication No. 410, when the pot resist 156 is cured, the dry cleaning roller 162 is in contact with the spinless nozzle 154, and the slits of the nozzle 154 Not shown). In this case, since the application of the resist 156 having a predetermined thickness is impossible, the slit (not shown) of the nozzle 154 needs to be repaired or the nozzle 154 itself needs to be replaced.

Further, the nozzle cleaning apparatus disclosed in published patent '410 discloses using the brush 180 to remove the pot resist 156 remaining in the cleaning roller 162. However, when using the brush 180 has a problem that it is impossible to completely remove the remaining pot resist 156 due to insufficient cleaning power. In addition, the length of the spinless nozzle 154 and the cleaning roller 162 in the longitudinal direction should also increase as the PDP or LCD becomes larger. Therefore, the length of the brush 180 in the longitudinal direction should also increase proportionally. In this case, since the brush 180 must be used in the cleaning liquid, a problem arises that it becomes difficult to rotate the brush 180 of the increased length in the cleaning liquid 164a.

In addition, when the brush 180 rotates in the cleaning liquid, the contaminated cleaning liquid 164a may float in the port 166, thereby increasing the possibility of contaminating the surface of the cleaning roller 162. As a result, there arises a problem that the cleaning power of the cleaning roller 162 is lowered.

In addition, the nozzle cleaning apparatus disclosed in Publication 410 is a device for cleaning the nozzle 154 of the spinless coating machine 152, in which case the nozzle 154 corresponds to a slit nozzle. Therefore, for example, the cleaning roller 162 in a dry state may be a plurality of ink discharge ports 126 of the planar nozzle 120 shown in FIG. 1A or a plurality of liquid solution discharge ports 126 of the nozzle dispenser 120 shown in FIG. 1B. ), The foreign matter 128 may be injected into the plurality of ink ejection openings 126 or the plurality of plating liquid ejection openings 126 and may cause clogging. That is, the nozzle cleaning apparatus disclosed in Publication 410 is substantially impossible to apply to the planar nozzle 120 shown in FIG. 1A and the nozzle dispenser 120 shown in FIG. 1B.

Therefore, there is a need for a new cleaning apparatus and a cleaning method that can sufficiently clean the foreign matter 128 of the discharge portion 126 of the nozzle apparatus 120 and can be used not only for slit nozzles but also for flat nozzles and nozzle dispensers.

The present invention is to solve the above-mentioned problems of the prior art, the first to clean the foreign matter adhering to the discharge portion of the nozzle apparatus using the cleaning roller and the cleaning liquid, and to use the plurality of pressing devices for the foreign matter remaining on the cleaning roller. It is to provide a cleaning device, a cleaning system and a cleaning method for removing the foreign matter of the nozzle device that can be significantly improved by removing.

According to a first aspect of the present invention, there is provided a cleaning apparatus for removing foreign matters from a nozzle apparatus, comprising: a cleaning liquid container containing a cleaning liquid; A cleaning roller rotatably mounted to the cleaning liquid container; A driving device connected to one side of the cleaning roller and driving the cleaning roller; And a plurality of pressing devices for pressurizing the surface of the cleaning roller in the cleaning liquid, wherein the foreign matter is transferred to the surface of the cleaning roller to be first removed by the cleaning liquid, and remains on the surface of the cleaning roller. The foreign material is characterized in that the secondary removal by the pressing force of the plurality of pressing devices.

According to a second aspect of the present invention, there is provided a cleaning system for removing foreign matters from a nozzle apparatus, comprising: a cleaning liquid container containing a cleaning liquid; A cleaning roller rotatably mounted to the cleaning liquid container; A driving device connected to one side of the cleaning roller and driving the cleaning roller; A plurality of pressing devices for pressing the surface of the cleaning roller; A cleaning liquid supply unit supplying the cleaning liquid to the cleaning liquid container through a supply line; And a cleaning liquid collection unit for collecting the contaminated cleaning liquid discharged from the cleaning liquid container through the discharge line, wherein the foreign matter is transferred to the surface of the cleaning roller and firstly removed by the cleaning liquid, The foreign matter remaining is characterized in that the secondary removal by the pressing force of the plurality of pressing devices.

According to a third aspect of the present invention, there is provided a cleaning method for removing foreign matter from a nozzle device, the method comprising: a) providing a discharge portion of the nozzle device to be in contact with a surface of a cleaning roller; b) rotating the cleaning roller to transfer the foreign matter attached to the discharge part to the surface of the cleaning roller; c) first diluting the transferred foreign matter with a cleaning liquid provided in the cleaning liquid container equipped with the cleaning roller; And d) secondly removing the foreign matter remaining on the surface of the cleaning roller by using a plurality of pressing devices for pressing the surface of the cleaning roller in the cleaning liquid.

In the present invention, the following effects are achieved.

1. Since foreign matter is removed first and second, the cleaning power is remarkably improved compared to the prior art.

2. Even if the cleaning roller is elastic and comes into contact with the discharge portion of the nozzle device, the possibility of damage to the discharge portion is significantly reduced. Therefore, the time and cost of repairing or replacing the nozzle apparatus are significantly reduced.

3. Even if the length of the cleaning roller lengthwise increases due to the large area of the PDP or LCD, the foreign material is easily removed by the plurality of pressing devices.

4. The cleaning apparatus and cleaning system according to the present invention can be used for both flat nozzles, nozzle dispensers and slit nozzles.

Further advantages of the present invention can be clearly understood from the following description with reference to the accompanying drawings, in which like or similar reference numerals denote like elements.

Hereinafter, the present invention will be described with reference to embodiments and drawings of the present invention.

Figure 2a is a perspective view of the cleaning device and the cleaning system for removing the foreign matter of the nozzle device according to an embodiment of the present invention, Figure 2b is a detailed cross-sectional view of the pressing device shown in Figure 2a.

2A, the cleaning apparatus 200 according to an embodiment of the present invention includes a cleaning liquid container 266 containing a cleaning liquid 264a; A cleaning roller 262 rotatably mounted to the cleaning liquid container 266; A driving device 263 connected to one side of the cleaning roller 262 and driving the cleaning roller 262; And a plurality of pressing devices 290a and 290b for pressing the surface of the cleaning roller 262 in the cleaning liquid 264a. In addition, the cleaning system 201 according to an embodiment of the present invention includes a cleaning liquid container 266 containing a cleaning liquid 264a; A cleaning roller 262 rotatably mounted to the cleaning liquid container 266; A driving device 263 connected to one side of the cleaning roller 262 and driving the cleaning roller 262; A plurality of pressing devices (290a, 290b) for pressing the surface of the cleaning roller (262) in the cleaning liquid (264a); A cleaning liquid supply unit (268) for supplying the cleaning liquid (264a) through the supply line (269) into the cleaning liquid container (266); And a cleaning liquid collection unit 280 that collects the contaminated cleaning liquid 164a discharged from the cleaning liquid container 266 through the discharge line 282. Furthermore, the cleaning apparatus 200 and the cleaning system 201 according to one embodiment of the present invention are covers (not shown) mounted on the upper portion of the cleaning liquid container 266 such that the cleaning liquid 264a is not scattered. Corresponding to the cover 167 of 1d), in which case, the discharge part 126 of the nozzle apparatus 120 shown in FIGS. 1A to 1C may have an upper portion of the cleaning roller 262. It is obvious to have an opening that allows contact with the face. In addition, in the embodiment of FIG. 2A, the plurality of pressing devices 290a and 290b are exemplarily illustrated as two first and second pressing devices 290a and 290b, but those skilled in the art may, for example, have three or more pressing devices. It will be appreciated that a pressing device can be used.

Meanwhile, referring to FIGS. 2A and 2B, the plurality of pressing devices 290a and 290b illustrated in FIG. 2A may include pressing plates 294 for contacting and pressing the surfaces of the cleaning rollers 262, respectively; A support member 295 on which the pressing plate 294 is supported; A shaft 296 connected to the support member 295 through the cleaning liquid container 266; And a shaft drive member 298 for driving the shaft 296 to make a linear motion. The shaft 296 and shaft drive member 298 shown in FIG. 2A correspond to the first presser drive member 292a and the second presser drive member 292b in FIG. 2A, respectively.

In the cleaning apparatus 200 and the cleaning system 201 according to the embodiment of the present invention shown in FIGS. 2A and 2B described above, the cleaning roller 262 may be used as the nozzle apparatus 120 of FIGS. 1A to 1C. The foreign matter 128 is first removed in contact with the discharge part 126 and the foreign matter 128 remaining on the surface of the cleaning roller 262 is secondarily removed by the pressing force of the plurality of pressing devices 290a and 290b. Characterized in that. To this end, the cleaning roller 262 and the pressing plate 295 are preferably made of a material having elasticity, respectively. More specifically, according to one embodiment of the present invention, the cleaning roller 262 is preferably made of any one of, for example, synthetic sponge, microfiber, vinyl acetate, and synthetic rubber material. In addition, the press plate 295 is preferably made of any one of PVC, plastic, soft rubber, hard rubber, silicone, epoxy resin, urethane, and synthetic resin.

In addition, in the above-described embodiment of FIG. 2B, the first pressing device 290a of the plurality of pressing devices 290a and 290b is provided to contact the surface of the cleaning roller 262 in the horizontal direction, and the second pressing device 290b is provided to contact the surface of the cleaning roller 262 in a vertical direction. However, one skilled in the art can fully understand that, for example, the second pressing device 290b may be provided to horizontally contact the surface of the cleaning roller 262 at a position opposite the first pressing device 290a. will be.

In addition, in the above-described embodiment of FIG. 2B, the shaft drive member 298 is illustrated as being implemented as a cam driven by a motor (eg, a gear motor, a servo motor, a stepping motor, an induction motor, etc.). Although illustrated in the related art, those skilled in the art will appreciate that the shaft drive member 298 may be implemented with a cylinder driven by the above-described motors (eg, gear motors, servo motors, stepping motors, induction motors, etc.). I can understand enough. Further, the plurality of pressing devices 290a and 290b shown in FIG. 2A may directly drive the shaft 296 in a manual manner without using the shaft driving member 298, respectively.

On the other hand, in the case of the first pressing device 290a, the linear motion is a linear motion in the left and right direction, and in the case of the second pressing device 290b, the linear motion is a linear motion in the vertical direction. However, for example, when a third auxiliary pressing device (not shown) is provided in the oblique direction on the right side of the second pressing device 290b, the linear movement of the third auxiliary pressing device (not shown) is in the inclined direction. Will be a linear motion. In addition, when a third auxiliary pressing device (not shown) is provided to press the surface of the cleaning roller 262 outside the cleaning liquid 264a, the third auxiliary pressing device (not shown) may be the cleaning roller 262. ) May have a function of squeezing a part of the cleaning liquid 264a (hereinafter referred to as a "squeeze function"). In the third auxiliary pressing device (not shown) having a squeeze function of the cleaning liquid 264a, the cleaning liquid 264a absorbed by the cleaning roller 262 is used in the nozzle apparatus 120 shown in FIGS. 1A to 1C. Too much of the discharge portion 126 is provided to prevent the discharge portion 126 from being contaminated with the cleaning liquid 264a.

Hereinafter, each component and operation of the cleaning apparatus according to an embodiment of the present invention will be described in detail.

Referring again to FIGS. 2A and 2B, the cleaning apparatus 200 and the cleaning system 201 according to one embodiment of the present invention each include a cleaning liquid container 266 containing the cleaning liquid 264a. The cleaning roller 262 is rotatably mounted along the longitudinal direction of the cleaning liquid container 266. The rotational operation of the cleaning roller 262 is controlled by the drive member 263. The driving member 263 may be implemented as a motor such as, for example, a gear motor, a servo motor, a stepping motor, an induction motor, or the like. The cleaning liquid supply unit 268 supplies the cleaning liquid 164a through the supply line 269 into the cleaning liquid container 266. The cleaning roller 262 is positioned so that a portion of the lower part is submerged into the cleaning liquid 164a into the cleaning liquid container 266. In this case, if the cleaning roller 262 is too deeply immersed in the cleaning liquid 164a, the rotational operation becomes difficult. Further, if the cleaning roller 262 is too shallowly immersed in the cleaning liquid 164a, the cleaning roller 262 by the cleaning liquid 164a is used. Dilution is not sufficient. Therefore, the part where the cleaning roller 262 is immersed in the cleaning liquid 164a is preferably about 1/2 to 2/3 based on the radius of the cleaning roller 262, for example.

On the other hand, when the driving member 263 is driven while the discharge part 126 of the nozzle apparatus 120 shown in FIGS. 1A to 1C is in contact with the upper surface of the cleaning roller 262 shown in FIG. The foreign matter 128 having the roller 262 attached to the discharge portion 126 of the nozzle device 120 is transferred to the surface of the cleaning roller 262. Thereafter, the foreign matter 128 transferred on the surface of the cleaning roller 262 is diluted in the cleaning liquid 264a to be primarily removed on the surface of the cleaning roller 262. Thereafter, the foreign matter 128 remaining on the surface of the cleaning roller 262 is urged by the plurality of pressing devices 290a and 290b to be completely removed secondarily from the surface of the cleaning roller 262. To this end, the shaft drive member 298 drives the shaft 296 to make a linear motion. More specifically, for example, by rotating the cam 298 shown in FIG. 2B by a motor (not shown) to move the shaft 296 to the right, the support member 295 and the pressure plate which are connected to the shaft 296 are connected. Reference numeral 294 also moves to the right to press the surface of the cleaning roller 262. The foreign matter 128 remaining on the surface of the cleaning roller 262 by the pressing force of the pressing plate 294 is completely removed from the surface of the cleaning roller 262. Thereafter, the cleaning roller 262 from which the foreign matter 128 has been completely removed continues to rotate to contact the discharge portion 126 of the nozzle device 120 again. Thereafter, the foreign matter 128 remaining in the discharge portion 126 of the nozzle device 120 is subsequently transferred to the surface of the cleaning roller 262. In this manner, the foreign matter 128 attached to the discharge part 126 of the nozzle device 120 is first removed by the cleaning liquid 264a in a dilution manner, and is applied to the pressing force by the plurality of pressing devices 290a and 290b. By secondary removal. Then, when the cleaning by the cleaning roller 262 (i.e., removing foreign matter) is completed, the cleaning liquid 164a contaminated by the foreign matter 128 is collected from the cleaning liquid container 266 through the discharge line 282. Discharged to unit 280.

The cleaning apparatus 200 and the cleaning system 201 according to the embodiment of the present invention described above, unlike the prior art, the planar nozzle 120, the nozzle dispenser 120, and the slit illustrated in FIGS. 1A to 1C, respectively, are illustrated. It is apparent that all of the nozzles 120 can be used.

3 is a flowchart illustrating a cleaning method for removing foreign matter from the nozzle apparatus according to an embodiment of the present invention.

1 to 3, in the cleaning method 300 for removing the foreign matter of the nozzle apparatus according to an embodiment of the present invention, a) the discharge part 126 of the nozzle apparatus 120 includes a cleaning roller 262. Providing 310 in contact with the surface of the substrate; b) rotating (320) the cleaning roller (262) to transfer the foreign matter (128) attached to the discharge portion (126) to the surface of the cleaning roller (262); c) primary dilution (330) of the transferred foreign matter (128) by a cleaning liquid (264a) provided in the cleaning liquid container (266) equipped with the cleaning roller (262); And d) the foreign matter 128 remaining on the surface of the cleaning roller 262 using a plurality of pressing devices 290a and 290b for pressurizing the surface of the cleaning roller 262 in the cleaning liquid 264a. And removing 340 secondly.

In addition, the cleaning method 300 for removing the foreign matter of the nozzle apparatus according to an embodiment of the present invention is e) a third auxiliary for pressing the surface of the cleaning roller 262 from the outside of the cleaning liquid 264a The method may further include squeezing a portion 350 of the cleaning liquid 264a absorbed by the cleaning roller 262 using a pressing device (not shown).

As described above, in the cleaning apparatus 200, the cleaning system 201, and the cleaning method 300 according to an embodiment of the present invention, foreign matter is completely removed, and the cleaning power is remarkably improved as compared with the prior art.

Various modifications may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims. It is not. Accordingly, the scope of the present invention should not be limited by the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.

1A is a schematic perspective view of a planar nozzle used in an inkjet printing apparatus according to the prior art.

Figure 1b is a schematic perspective view of a nozzle apparatus according to the prior art.

Figure 1c is a view showing a detailed perspective view of the nozzle portion and the foreign matter attached thereto of the nozzle device according to the prior art shown in Figure 1b.

Figure 1d is a view showing a nozzle cleaning apparatus according to the prior art.

2A is a view illustrating a perspective view of a cleaning device and a cleaning system for removing foreign matter from a nozzle device according to an embodiment of the present invention.

FIG. 2B is a detailed cross-sectional view of the pressing device shown in FIG. 2A.

FIG. 2B is a cross-sectional view illustrating a state in which a cleaning block is in contact with a nozzle member of the apparatus for cleaning a flat nozzle according to the exemplary embodiment of FIG. 2A.

3 is a flowchart illustrating a cleaning method for removing foreign matter from the nozzle apparatus according to an embodiment of the present invention.

Claims (18)

In the cleaning device for removing the foreign matter of the nozzle device, A cleaning liquid container containing a cleaning liquid; A cleaning roller rotatably mounted to the cleaning liquid container; A driving device connected to one side of the cleaning roller and driving the cleaning roller; And A plurality of pressing device for pressing the surface of the cleaning roller in the cleaning liquid Including, The foreign matter is transferred to the surface of the cleaning roller is first removed by the cleaning liquid, The foreign matter remaining on the surface of the cleaning roller is secondarily removed by the pressing force of the plurality of pressing devices. Cleaning device. The method of claim 1, The cleaning apparatus further comprises a cover mounted on the upper portion of the cleaning liquid container so that the cleaning liquid does not scatter. The method of claim 1, And the cleaning device further comprises an auxiliary pressing device provided to press the surface of the cleaning roller outside of the cleaning liquid. The method of claim 1, Each of the plurality of pressing devices is A pressing plate contacting and pressing the surface of the cleaning roller; A support member on which the pressing plate is supported; A shaft connected to the support member through the cleaning liquid container; And A shaft drive member for driving the shaft in a linear motion Containing Cleaning device. The method of claim 3, The auxiliary pressing device A pressing plate contacting and pressing the surface of the cleaning roller; A support member on which the pressing plate is supported; A shaft connected to the support member through the cleaning liquid container; And A shaft drive member for driving the shaft in a linear motion Containing Cleaning device. The method according to claim 4 or 5, And a cam or cylinder driven by the motor. The method according to any one of claims 1 to 5, The cleaning roller is made of any one of synthetic sponge, microfiber, vinyl acetate, and synthetic rubber material, The pressing plate is made of any one of PVC, plastic, soft rubber, hard rubber, silicone, epoxy resin, urethane, and synthetic resin materials. Cleaning device. The method according to any one of claims 1 to 5, And the nozzle apparatus is any one of a flat nozzle, a nozzle dispenser, and a slit die. In the cleaning system for removing the foreign matter of the nozzle device, A cleaning liquid container containing a cleaning liquid; A cleaning roller rotatably mounted to the cleaning liquid container; A driving device connected to one side of the cleaning roller and driving the cleaning roller; A plurality of pressing devices for pressing the surface of the cleaning roller; A cleaning liquid supply unit supplying the cleaning liquid to the cleaning liquid container through a supply line; And Cleaning liquid collection unit for collecting the contaminated cleaning liquid discharged from the cleaning liquid container through the discharge line Including, The foreign matter is transferred to the surface of the cleaning roller is first removed by the cleaning liquid, The foreign matter remaining on the surface of the cleaning roller is secondarily removed by the pressing force of the plurality of pressing devices. Cleaning system. The method of claim 9, The cleaning system further comprises a cover mounted on top of the cleaning liquid container so that the cleaning liquid does not scatter. The method of claim 9, And the cleaning system further comprises an auxiliary pressing device provided to press the surface of the cleaning roller outside of the cleaning liquid. The method of claim 9, Each of the plurality of pressing devices is A pressing plate contacting and pressing the surface of the cleaning roller; A support member on which the pressing plate is supported; A shaft connected to the support member through the cleaning liquid container; And A shaft drive member for driving the shaft in a linear motion Containing Cleaning system. The method of claim 11, The auxiliary pressing device A pressing plate contacting and pressing the surface of the cleaning roller; A support member on which the pressing plate is supported; A shaft connected to the support member through the cleaning liquid container; And A shaft drive member for driving the shaft in a linear motion Containing Cleaning system. The method according to claim 12 or 13, And a cam or cylinder driven by the shaft drive member to the motor. The method according to any one of claims 9 to 13, The cleaning roller is made of any one of synthetic sponge, microfiber, vinyl acetate, and synthetic rubber material, The pressing plate is made of any one of PVC, plastic, soft rubber, hard rubber, silicone, epoxy resin, urethane, and synthetic resin materials. Cleaning system. The method according to any one of claims 9 to 13, And said nozzle arrangement is one of a flat nozzle, a nozzle dispenser, and a slit die. In the cleaning method for removing the foreign matter of the nozzle device, a) providing the discharge portion of the nozzle device to be in contact with the surface of the cleaning roller; b) rotating the cleaning roller to transfer the foreign matter attached to the discharge part to the surface of the cleaning roller; c) first diluting the transferred foreign matter with a cleaning liquid provided in the cleaning liquid container equipped with the cleaning roller; And d) secondly removing the foreign matter remaining on the surface of the cleaning roller by using a plurality of pressing devices for pressurizing the surface of the cleaning roller in the cleaning liquid; Cleaning method comprising a. The method of claim 17, The cleaning method further comprises e) squeezing a portion of the cleaning liquid absorbed by the cleaning roller using an auxiliary pressing device for pressurizing the surface of the cleaning roller outside of the cleaning liquid. Way.

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