Cleaning device for coating nozzle

Abstract

To enable coating liquid remaining in a discharge portion after applying the coating liquid to a surface of a coating target by discharging the coating liquid from a slit-shaped discharge port provided in the discharge portion provided in a manner of projecting in a substantially triangular shape along the longitudinal direction on the tip surface of a coating nozzle to be easily and cleanly removed with a simple cleaning member through a simple operation.SOLUTION: Positioning means for positioning a contact member at a position corresponding to a discharge portion is provided in a cleaning member 30 that includes the contact member 31 formed in a shape of a discharge portion 22 provided in a manner of projecting in a substantially triangular shape on a tip surface 21 of a coating nozzle 20. In a state where the contact member is positioned at the corresponding position of the discharge portion by the positioning means, the cleaning member is manually moved along the discharge portion provided in the longitudinal direction of the coating nozzle, the coating liquid remaining in the discharge portion of the coating nozzle is removed by the contact member.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a coating nozzle cleaning device that uses a coating nozzle having a slit-shaped outlet provided in an outlet portion that protrudes in a substantially triangular shape along the longitudinal direction from the tip surface of the coating nozzle, and that moves the coating nozzle in a direction perpendicular to the longitudinal direction to discharge a coating liquid from the slit-shaped outlet provided in the outlet portion of the coating nozzle to apply the coating liquid to the surface of the object to be coated, and then cleans the outlet portion of the coating nozzle.In particular, the present invention is characterized in that, after the coating liquid is discharged from the slit-shaped outlet provided in the outlet portion that protrudes in a substantially triangular shape along the longitudinal direction from the tip surface of the coating nozzle to apply the coating liquid to the surface of the object to be coated, the coating liquid remaining in the outlet portion provided with the slit-shaped outlet can be cleaned using a simple device and with a simple operation. [Background technology]

[0002] In the manufacture of various display panels and the like, a coating nozzle has conventionally been used in which a slit-shaped outlet is provided in an outlet section that protrudes in a roughly triangular shape along the longitudinal direction from the tip surface of the coating nozzle, and the coating nozzle is moved in a direction perpendicular to the longitudinal direction above an object to be coated that is set on a stage, thereby discharging the coating liquid from the slit-shaped outlet in the outlet section onto the surface of the object to be coated.

[0003] Here, when the coating liquid is applied to the surface of the object to be coated using the coating nozzle as described above, the coating liquid remains partially at the discharge portion of the coating nozzle, which has a slit-shaped discharge port.

[0004] Furthermore, when the coating liquid is applied to the surface of the next object to be coated using a coating nozzle with some coating liquid remaining in the discharge section of the coating nozzle having such a discharge port, there is a problem in that the coating liquid remaining in the discharge section of the coating nozzle causes streaky coating unevenness and irregular coating film thickness in the coating liquid applied to the surface of the next object to be coated.

[0005] Therefore, in order to remove the coating liquid remaining in the discharge portion of the coating nozzle as described above, Patent Documents 1 to 3 disclose a cleaning device provided at a separate position, in which a cleaning member provided with a contact member such as a blade shaped to correspond to the shape of the discharge portion of the coating nozzle is moved by a moving device such as a belt conveyor; the coating nozzle with the coating liquid remaining in the discharge portion is guided to the position of the cleaning device; and, with the cleaning member such as a blade in contact with the discharge portion of the coating nozzle with the coating liquid remaining, the cleaning member is moved by the moving device along the length of the coating nozzle, thereby removing the coating liquid remaining in the discharge portion of the coating nozzle.

[0006] However, in the above-mentioned Patent Documents 1 to 3, it is necessary to set up the cleaning device in a separate location in advance, and the cleaning member equipped with a contact member such as a blade is moved by a moving device such as a belt conveyor, which results in a large-sized device, high equipment costs, making it unsuitable for experimental or small-scale production use, and also resulting in high running costs. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2021-41322 [Patent Document 2] Patent Publication No. 2021-115490 [Patent Document 3] Japanese Patent Application Publication No. 2018-187598 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0008] The present invention aims to solve the above-mentioned problems in a coating nozzle cleaning device that uses a coating nozzle having a slit-shaped outlet at an outlet portion that protrudes in a roughly triangular shape along the longitudinal direction from the tip surface of the coating nozzle, and moves the coating nozzle in a direction perpendicular to its longitudinal direction while discharging a coating liquid from the slit-shaped outlet at the outlet portion of the coating nozzle onto the surface of an object to be coated, applying the coating liquid to the surface of the object to be coated, and then cleaning the outlet portion of the coating nozzle.

[0009] In other words, the object of the present invention is to provide a cleaning device for a coating nozzle as described above, in which a coating liquid is discharged onto the surface of a workpiece from a slit-shaped discharge port provided in the discharge portion of the coating nozzle, and after the coating liquid has been applied to the surface of the workpiece, the coating liquid remaining in the discharge portion of the coating nozzle can be cleaned cleanly with a simple operation using a simple cleaning member. [Means for solving the problem]

[0010] In order to solve the above-mentioned problems, the coating nozzle cleaning device of the present invention uses a coating nozzle having a slit-shaped outlet provided in an outlet portion that protrudes in a substantially triangular shape along the longitudinal direction from the tip surface of the coating nozzle, and while moving the coating nozzle in a direction perpendicular to its longitudinal direction, the coating liquid is discharged from the slit-shaped outlet provided in the outlet portion of the coating nozzle to the surface of the object to be coated, and after applying the coating liquid to the surface of the object to be coated, the coating nozzle cleaning device cleans the outlet portion of the coating nozzle.In this coating nozzle cleaning device, a cleaning member provided with a contact member that corresponds to the shape of the outlet portion of the coating nozzle is provided with a positioning means that positions the contact member at a position that corresponds to the position of the outlet portion by the positioning means, and with the contact member positioned at the position that corresponds to the position of the outlet portion by the positioning means, the cleaning member is manually moved along the outlet portion provided in the longitudinal direction of the coating nozzle, and the coating liquid remaining in the outlet portion of the coating nozzle is removed by the contact member.

[0011] Furthermore, as in the cleaning device for a coating nozzle according to the present invention, a cleaning member provided with a contact member corresponding to the shape of the discharge portion of the coating nozzle is provided with a positioning means for positioning the contact member at a position corresponding to the position of the discharge portion, and with the contact member positioned at the position corresponding to the discharge portion by the positioning means, the cleaning member is manually moved along the discharge portion provided in the longitudinal direction of the coating nozzle, and the coating liquid remaining in the discharge portion of the coating nozzle is removed by the contact member.This makes it possible to make the device more compact, reduce equipment costs, and reduce running costs, compared to conventional devices in which a cleaning device is provided in a different position in advance and a cleaning member provided with a contact member such as a blade is moved by a moving device such as a belt conveyor.Furthermore, the contact member is set at an accurate position corresponding to the discharge portion of the coating nozzle, and the coating liquid remaining in the discharge portion of the coating nozzle is reliably removed by this contact member.

[0012] In the application nozzle cleaning device according to the present invention, the positioning means may include a holding member that allows the contact member to slide in a direction perpendicular to the longitudinal direction of the application nozzle. In this way, even if the position at which the cleaning member is set is shifted when the contact member provided on the cleaning member is set at the position of the discharge portion, the holding member causes the contact member to slide in a direction perpendicular to the longitudinal direction of the application nozzle, thereby correcting the position of the contact member and setting the contact member at an appropriate position corresponding to the position of the discharge portion.

[0013] Furthermore, in the application nozzle cleaning device according to the present invention, the positioning means may be provided on both sides of the contact member, and the positioning members contact the tip surfaces of the application nozzle on both sides of the discharge portion of the application nozzle. In this way, even if the contact members provided on the cleaning member deviate from the set position when being set at the discharge portion, the position of the cleaning member can be corrected by bringing the positioning members on both sides of the contact member into contact with the tip surfaces of the application nozzle on both sides of the discharge portion of the application nozzle, and the contact members can be set at an appropriate position corresponding to the position of the discharge portion.

[0014] In addition, in the application nozzle cleaning device according to the present invention, magnetic members are disposed on the cleaning members on both sides of the contact member, and the magnetic members can magnetically attract the cleaning members on both sides of the contact member to both sides of the discharge portion of the application nozzle. In this way, the magnetic attraction of the magnetic members facilitates the operation of the positioning means to position the contact members at positions corresponding to the positions of the discharge portion, and when the cleaning members are manually moved along the discharge portion provided in the longitudinal direction of the application nozzle while maintaining the cleaning members in a state in which the contact members are positioned at the positions corresponding to the positions of the discharge portion, the state in which the contact members correspond to the positions of the discharge portion is maintained even during sliding of the cleaning members.

[0015] In addition, in the application nozzle cleaning device according to the present invention, a guide groove is provided on the side of the application nozzle along the longitudinal direction of the application nozzle, and a guide member having a positioning pin that engages with the guide groove is provided on the side of the cleaning member, and the cleaning member can be moved along the discharge portion provided in the longitudinal direction of the application nozzle with the positioning pin engaged with the guide groove. In this way, with the contact member positioned at an appropriate position corresponding to the discharge portion by the positioning means, the operation of manually moving the cleaning member along the discharge portion provided in the longitudinal direction of the application nozzle can be performed more simply, quickly, and accurately. Furthermore, since the device is handheld, it is easy to carry, does not require mechanical operation, and can be used immediately at any time.

[0016] In addition, in the application nozzle cleaning device according to the present invention, a contact member corresponding to the shape of the discharge portion of the application nozzle can be provided so as to be inclined in the direction in which the cleaning member moves along the longitudinal direction of the application nozzle. In this way, the cleaning member can be moved along the discharge portion provided in the longitudinal direction of the application nozzle, and the application liquid remaining in the discharge portion of the application nozzle can be easily and reliably removed by the contact member and discarded into a liquid receiver or the like.

[0017] Furthermore, in the application nozzle cleaning device according to the present invention, a coating liquid storage member that stores the coating liquid scraped from the discharge portion of the application nozzle by the contact member can be provided forward of the contact member in the direction in which the cleaning member moves along the longitudinal direction of the application nozzle. In this way, the cleaning member can be moved along the discharge portion provided in the longitudinal direction of the application nozzle, and the coating liquid remaining in the discharge portion of the application nozzle can be removed by the contact member and stored in the coating liquid storage member. [Effects of the Invention]

[0018] In the cleaning device for a coating nozzle of the present invention, a cleaning member provided with a contact member corresponding to the shape of the discharge portion of the coating nozzle as described above is provided with a positioning means for positioning the contact member at a position corresponding to the position of the discharge portion, and with the contact member positioned at the position corresponding to the discharge portion by the positioning means, the cleaning member is manually moved along the discharge portion provided in the longitudinal direction of the coating nozzle, and the coating liquid remaining in the discharge portion of the coating nozzle is removed by the contact member.This makes it possible to make the device more compact, reduce equipment costs, and reduce running costs, compared to conventional devices in which a cleaning device is provided in a separate position in advance and a cleaning member provided with a contact member such as a blade is moved by a moving device such as a belt conveyor.Furthermore, the contact member is set at an accurate position corresponding to the discharge portion of the coating nozzle, and the coating liquid remaining in the discharge portion of the coating nozzle is completely removed by the contact member.

[0019] As a result, in the coating nozzle cleaning device of the present invention, after coating the surface of the object to be coated with the coating liquid, the coating liquid remaining in the discharge section of the coating nozzle can be cleaned away easily using a simple cleaning member. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic plan view showing a state in which a coating nozzle is moved over a coating object set on a stage while a coating liquid is applied to the surface of the coating object in a coating nozzle cleaning device according to one embodiment of the present invention. [Figure 2] This is a schematic cross-sectional view showing the state in which, in the coating nozzle cleaning device of the above embodiment, after coating the surface of the object to be coated with coating liquid, the coating nozzle is guided above a liquid receiving container provided on a step that is lower than the stage. [Figure 3] FIG. 3 is a schematic plan view showing a cleaning member used in the cleaning device for the application nozzle according to the embodiment. [Figure 4]3 is a schematic cross-sectional view in a direction intersecting the traveling direction, showing the internal structure of a holding member in a cleaning member used in the cleaning device for the application nozzle according to the embodiment. FIG. [Figure 5] 4 is a schematic cross-sectional view in the running direction showing the internal structure of a holding member of a cleaning member used in the cleaning device for the application nozzle according to the embodiment. FIG. [Figure 6] FIG. 10 is a schematic explanatory diagram showing the state in which the cleaning device for a coating nozzle according to the embodiment is positioned under the coating nozzle after the coating liquid has been applied to the surface of the object to be coated. [Figure 7] FIG. 7 is a schematic cross-sectional explanatory view showing a state in which the cleaning device for the application nozzle according to the embodiment is raised from the state shown in FIG. 6 so that the contact member of the cleaning member is brought into contact with the discharge portion of the application nozzle. [Figure 8] FIG. 8 is a schematic cross-sectional view illustrating a state in which, in the coating nozzle cleaning device according to the embodiment, the contact member of the cleaning member is brought into contact with the discharge portion of the coating nozzle as shown in FIG. 7, and the cleaning member is manually moved from one end to the other end in the longitudinal direction of the discharge portion of the coating nozzle to scrape off the coating liquid remaining around the discharge portion of the coating nozzle from the contact member. [Figure 9] 1A, 1B, and 1C are schematic plan, front, and side views, respectively, showing a state in which a coating liquid storage member for storing coating liquid scraped from the discharge portion of the coating nozzle by a contact member is provided forward of the contact member in the movement direction of the cleaning member in the coating nozzle cleaning device according to the embodiment described above, where FIG. 1A is a schematic plan view, FIG. 1B is a schematic front view, and FIG. 1C is a schematic side view. [Figure 10] In a modified example of the cleaning device for the application nozzle according to the above embodiment, an additional plate is attached to one side of the application nozzle along the longitudinal direction, and this additional plate is provided with a guide groove for guiding the cleaning member along the longitudinal direction of the application nozzle, where (A) is a schematic cross-sectional explanatory view and (B) is a schematic side view. [Figure 11]This is a schematic front view showing a modified example of the cleaning device for the application nozzle according to the above embodiment, in which a guide member is provided on the base plate of the cleaning member on the opposite side of the holding member, and a positioning pin is provided on this guide member to engage with a guide groove provided on the application nozzle. [Figure 12] FIG. 10 is a schematic cross-sectional view illustrating a state in which a positioning pin provided on a guide member of a cleaning member is guided into and engaged with a guide groove provided on an additional plate of the application nozzle, thereby bringing a contact member of the cleaning member into contact with the discharge portion of the application nozzle, in a modified example of a cleaning device for a coating nozzle according to the above embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

[0021] Hereinafter, a coating nozzle cleaning device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the coating nozzle cleaning device according to the present invention is not limited to the embodiment shown below, and can be appropriately modified and implemented within the scope of the invention.

[0022] In this embodiment, as shown in Figures 1 and 2, a workpiece W such as a glass plate is set on a stage 11, and the tip surface 21 of the coating nozzle 20 is positioned opposite the workpiece W set in this manner, and the coating nozzle 20 is guided above the workpiece W, and then moved in a direction perpendicular to its longitudinal direction.

[0023] The coating nozzle 20 has a discharge portion 22 protruding in a substantially triangular shape along its longitudinal direction on its tip surface 21, and the coating liquid x contained in a storage portion 23 inside the coating nozzle 20 is discharged from a slit-shaped discharge port 24 provided in the discharge portion 22 onto the surface of the workpiece W while the coating nozzle 20 is moved in a direction perpendicular to its longitudinal direction as described above to apply the coating liquid x to the surface of the workpiece W. After the coating liquid x has been applied to the surface of the workpiece W in this manner, the coating nozzle 20 is moved onto a step 12 that is lower than the stage 11 and guided onto a liquid receiving container 13 provided on this step 12. Although not shown, the coating liquid x is supplied, for example, by connecting a storage tank that stores the coating liquid x to the coating nozzle 20 with piping or the like, providing a coating liquid shut-off valve between the storage tank and the coating nozzle 20, and opening and closing the coating liquid shut-off valve. Furthermore, during coating, although not shown, an air supply port is provided in the coating nozzle 20, and piping or the like is connected to it, and an air shutoff valve is provided between the air supply source and the coating nozzle 20, and the coating liquid x is pressurized by opening and closing the air shutoff valve, and the coating liquid x is applied to the coating object W.

[0024] Here, when the coating nozzle 20 is moved while discharging the coating liquid x onto the surface of the workpiece W from the slit-shaped discharge port 24 provided in the discharge portion 22 of the tip surface 21 of the coating nozzle 20 as described above, and the coating liquid x is applied to the entire surface of the workpiece W, as shown in Figure 2, some of the coating liquid x discharged from the discharge port 24 remains attached to the periphery of the discharge portion 22 of the coating nozzle 20.When the coating liquid x is applied to the surface of the next workpiece W using the coating nozzle 20 in this state, the coating liquid x remaining around the periphery of the discharge portion 22 of the coating nozzle 20 causes streaky coating unevenness and irregular coating film thickness in the coating liquid x applied to the surface of the next workpiece W.

[0025] In this embodiment, a cleaning member 30 is used, which is provided with a contact member 31 cut into an approximately triangular shape corresponding to the shape of the discharge portion 22 of the coating nozzle 20, and the contact member 31 of this cleaning member 30 is used to remove the coating liquid x adhering to the periphery of the discharge portion 22 of the coating nozzle 20.

[0026] Here, in this embodiment, when the contact member 31 cut into an approximately triangular shape corresponding to the shape of the discharge portion 22 of the application nozzle 20 is provided on the cleaning member 30 as described above, the contact member 31 is provided so as to be inclined toward the discharge portion 22 of the application nozzle 20.

[0027] In addition, in this embodiment, when the coating liquid x adhering to the periphery of the discharge portion 22 of the coating nozzle 20 is removed by the contact member 31 provided on the cleaning member 30 as described above, a positioning means is provided to position the contact member 31 at a position corresponding to the position of the discharge portion 22 of the coating nozzle 20.

[0028] In this embodiment, when the positioning means is used to position the contact member 31 at a position corresponding to the position of the discharge portion 22 of the application nozzle 20 as described above, the contact member 31 is held on a holding member 32, as shown in Figures 3 to 5, and the mating portion 32a provided on the inner surface of the holding member 32 is slidably fitted into a rail member 34 attached to a base plate 33, so that the contact member 31 can be slid by the holding member 32 in a direction perpendicular to the longitudinal direction of the application nozzle 20.

[0029] In addition, positioning members 35 protrude from the holding member 32 so as to protrude on both sides of the contact member 31, and a first contact portion 35a is provided on the upper end surfaces of the paired positioning members 35, which contacts the tip surface 21 of the application nozzle 20 on both sides of the discharge portion 22, and a second contact portion 35b is provided on the opposing upper ends of the paired positioning members 35, which contacts the starting end of the discharge portion 22 of the application nozzle 20.Furthermore, a magnet member 36 is provided below the first contact portion 35a of each positioning member 35 provided so as to protrude on both sides of the contact member 31, and the magnet member 36 provided below each first contact portion 35a in this manner magnetically attracts the upper end surface of each positioning member 35 to the tip surface 21 of the application nozzle 20 on both sides of the discharge portion 22.

[0030] In this embodiment, when the coating liquid x adhering to the periphery of the discharge portion 22 of the coating nozzle 20 is removed by the contact member 31 provided on the cleaning member 30 as described above, as shown in FIG. 6, the worker holds the cleaning member 30 in his hand and positions it below the coating nozzle 20 after applying the coating liquid x to the surface of the workpiece W and moving it, and then, as shown in FIG. 7, holds the base plate 33 and raises the cleaning member 30 so that the contact member 31 of the cleaning member 30 comes into contact with the discharge portion 22 of the coating nozzle 20.

[0031] In this way, even if the positions of the contact member 31 of the cleaning member 30 and the discharge portion 22 of the application nozzle 20 are misaligned in a direction perpendicular to the longitudinal direction of the application nozzle 20, a force acts on the V-shaped valley portion of the contact member 31 to follow the triangular tip of the discharge portion 22, and the holding member 32 that holds the contact member 31 naturally moves in a direction perpendicular to the longitudinal direction of the application nozzle 20 along the rail member 34 attached on the base plate 33, and is guided to an accurate position, and the first contact portion on the upper end surface of each positioning member 35 protruding on both sides of the contact member 31 35a contacts the tip surface 21 of the application nozzle 20 on both sides of the discharge portion 22, and the second contact portion 35b at the upper end of the paired positioning members 35 facing each other contacts the starting end of the discharge portion 22 of the application nozzle 20, and in this state, the upper end surface of each positioning member 35 is magnetically attracted to the tip surface 21 of the application nozzle 20 on both sides of the discharge portion 22 by each magnet member 36 provided below the first contact portion 35a of each positioning member 35, so that the contact member 31 of the cleaning member 30 is maintained in a position where it is in appropriate contact with the discharge portion 22 of the application nozzle 20.

[0032] In this embodiment, as described above, the contact member 31 of the cleaning member 30 is appropriately brought into contact with the discharge portion 22 of the coating nozzle 20, and as shown in Figure 8, the contact member 31 is inclined in a direction that moves the contact member 31 along the longitudinal direction of the coating nozzle 20, and the contact member 31 is brought into contact with one longitudinal end side of the discharge portion 22 of the coating nozzle 20.In this state, the base plate 33 is held by hand and the cleaning member 30 is moved from one longitudinal end side to the other end side of the discharge portion 22 of the coating nozzle 20, so that the coating liquid x remaining around the discharge portion 22 of the coating nozzle 20 is scraped off by the contact member 31 and collected in the liquid receiving container 13 provided on the step portion 12 that is lower than the stage 11.

[0033] In this embodiment, as described above, the contact member 31 of the cleaning member 30 is positioned at a position corresponding to the discharge portion 22 of the coating nozzle 20, and then the cleaning member 30 is manually moved along the discharge portion 22 provided in the longitudinal direction of the coating nozzle 20, and the contact member 31 removes the coating liquid x remaining around the discharge portion 22 of the coating nozzle 20.As a result, the device is smaller in size, has lower equipment costs, and reduces running costs compared to conventional devices.

[0034] Furthermore, in this embodiment, as described above, the coating liquid x remaining around the discharge portion 22 of the coating nozzle 20 is scraped off by the contact member 31 provided on the cleaning member 30 and collected in the liquid receiving container 13. However, the method for collecting the coating liquid x scraped off by the contact member 31 is not limited, and various methods can be adopted.

[0035] For example, as shown in Figures 9(A) to 9(C), a coating liquid storage member 37 that stores the coating liquid x scraped off from the discharge portion 22 of the coating nozzle 20 by the contact member 31 can be provided forward of the contact member 31 in the movement direction of the cleaning member 30.

[0036] In this way, the coating liquid x scraped from the discharge portion 22 of the coating nozzle 20 by the contact member 31 inclined in the direction of movement along the longitudinal direction of the coating nozzle 20 as described above is recovered and stored in the storage portion 37a of the coating liquid storage member 37, which is provided forward of the contact member 31 in the direction of movement of the cleaning member 30.

[0037] Next, in the embodiment, when the coating liquid x remaining around the discharge portion 22 of the coating nozzle 20 is scraped off by the contact member 31 as described above, a modified example will be described with reference to FIGS. 10(A), (B) to 12 in which the cleaning member 30 is moved quickly and without shaking when the cleaning member 30 is moved from one end side of the discharge portion 22 of the coating nozzle 20 to the other end side in the longitudinal direction of the discharge portion 22 of the coating nozzle 20 by holding the base plate 33 by hand while the contact member 31 is in appropriate contact with the discharge portion 22 of the coating nozzle 20.

[0038] In the above-mentioned modified example, as shown in Figures 10(A) and (B), an additional plate 26 is attached to one side surface 25 along the longitudinal direction of the application nozzle 20, and this additional plate 26 is provided with a guide groove 27 for guiding the cleaning member 30 along the longitudinal direction of the application nozzle 20.

[0039] On the other hand, in the cleaning member 30, as shown in FIG. 11, a guide member 38 is provided at the end of the base plate 33 opposite the holding member 32, and this guide member 38 is provided with a positioning pin 38a that engages with the guide groove 27 provided in the additional plate 26 attached to the side surface 25 of the application nozzle 20.

[0040] Furthermore, in the guide groove 27 provided in the additional plate 26, as shown in Figure 10 (B), an introduction groove portion 27a is provided at one longitudinal end side of the application nozzle 20 to guide the positioning pin 38a provided on the guide member 38 of the cleaning member 30 into the guide groove 27, while an extraction groove portion 27b is provided at the other longitudinal end side of the application nozzle 20 to remove the positioning pin 38a from inside the guide groove 27.

[0041] In this modified example, the positioning pin 38a provided on the guide member 38 of the cleaning member 30 is guided into and engaged with the guide groove 27 through the introduction groove portion 27a at one end side of the guide groove 27 provided in the additional plate 26 attached to the side surface 25 of the application nozzle 20, and the cleaning member 30 is moved along the guide groove 27 while being pressed against the additional plate 26 by hand.

[0042] In this way, as shown in FIG. 12, similar to the above embodiment, the contact member 31 of the cleaning member 30 is maintained in a position where it is in proper contact with the discharge portion 22 of the application nozzle 20, eliminating vibrations caused by hand shake while moving the cleaning member 30, thereby extending the life of the resin contact member 31 and enabling the cleaning member 30 to be moved quickly and straight along the linear guide groove 27.

[0043] Then, the positioning pin 38a provided on the guide member 38 of the cleaning member 30 is engaged with the guide groove 27 provided on the additional plate 26 attached to the side surface 25 of the application nozzle 20, and while the contact member 31 of the cleaning member 30 is in appropriate contact with the discharge portion 22 of the application nozzle 20 and regulated by the guide groove 27, the cleaning member 30 is moved along the discharge portion 22 provided in the longitudinal direction of the application nozzle 20, so that the contact member 31 removes the coating liquid x remaining in the discharge portion 22 of the application nozzle 20.

[0044] In this way, when the cleaning member 30 is manually moved along the discharge portion 22 provided longitudinally on the application nozzle 20 with the contact member 31 of the cleaning member 30 in appropriate contact with the discharge portion 22 of the application nozzle 20, the cleaning member 30 is prevented from rattling, the operation of moving the cleaning member 30 along the discharge portion 22 of the application nozzle 20 can be performed simply and accurately, and the operation of removing the coating liquid x remaining in the discharge portion 22 of the application nozzle 20 by the contact member 31 can be performed more simply and accurately.

[0045] In the above-described modified example, an additional plate 26 is attached to one side surface 25 along the longitudinal direction of the application nozzle 20, and a guide groove 27 is provided in this additional plate 26 to guide the cleaning member 30 along the longitudinal direction of the application nozzle 20. However, the present invention is not limited to this, and although not shown, the above-described guide groove 27 can also be provided directly on one side surface 25 along the longitudinal direction of the application nozzle 20. [Explanation of symbols]

[0046] 11: Stage 12 :Double part 13: Liquid receiving container 20: Application nozzle 21:Tip surface 22:Discharge part 23: Storage unit 24:Discharge port 25: Side 26: Additional plate 27: Guide groove 27a: Introduction groove 27b: Leading out groove 30: Cleaning materials 31: Contact member 32: Holding member 32a: Fitting part 33: Base plate 34: Rail member 35: Positioning member 35a: 1st contact part 35b: 2nd contact part 36: Magnet member 37: Coating fluid storage member 37a: Storage section 38: Guide member 38a: Locating pin W: Coating object x: Coating liquid

Claims

1. 1. A coating nozzle cleaning device that uses a coating nozzle having a slit-shaped discharge port provided in a discharge portion that protrudes in a substantially triangular shape along the longitudinal direction of the tip surface of the coating nozzle, and that discharges a coating liquid from the slit-shaped discharge port provided in the discharge portion of the coating nozzle while moving the coating nozzle in a direction perpendicular to the longitudinal direction of the coating nozzle, thereby coating the coating liquid on the surface of the object to be coated, and then cleans the discharge portion of the coating nozzle. The coating nozzle cleaning device is characterized in that: a cleaning member provided with a contact member that corresponds to the shape of the discharge portion of the coating nozzle is provided with a positioning means that positions the contact member at a position that corresponds to the position of the discharge portion by the positioning means; and with the contact member positioned at the position that corresponds to the position of the discharge portion by the positioning means, the cleaning member is manually moved along the discharge portion provided in the longitudinal direction of the coating nozzle, and the coating liquid remaining in the discharge portion of the coating nozzle is removed by the contact member.

2. 2. The coating nozzle cleaning device according to claim 1, wherein the positioning means comprises a holding member that enables the contact member to slide in a direction perpendicular to the longitudinal direction of the coating nozzle.

3. 2. The coating nozzle cleaning device according to claim 1, wherein the positioning means comprises positioning members that contact the tip surfaces of the coating nozzle on both sides of the discharge portion of the coating nozzle, and are provided on both sides of the contact member.

4. 4. The cleaning device for a coating nozzle according to claim 1, wherein magnetic members are disposed on the cleaning members on both sides of the contact member, and the magnetic members magnetically attract the cleaning members on both sides of the contact member to both sides of the discharge portion of the coating nozzle.

5. 4. The coating nozzle cleaning device according to claim 1, wherein a guide groove is provided on a side surface of the coating nozzle along the longitudinal direction of the coating nozzle, and a guide member having a positioning pin that engages with the guide groove is provided on the side surface of the cleaning member, and the cleaning member is moved along the discharge portion provided in the longitudinal direction of the coating nozzle with the positioning pin engaged with the guide groove.

6. 4. The coating nozzle cleaning device according to claim 1, wherein a contact member corresponding to the shape of the discharge portion of the coating nozzle is inclined in a direction in which the cleaning member moves along the longitudinal direction of the coating nozzle.

7. 4. The coating nozzle cleaning device according to claim 1, wherein a coating liquid storage member that stores the coating liquid scraped off from the discharge portion of the coating nozzle by the contact member is provided forward of the contact member in the direction in which the cleaning member moves along the longitudinal direction of the coating nozzle.

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