Coating head and coating device equipped with same

Abstract

A coating head (10) for applying a coating liquid to a coating surface comprises: a discharge tool (21) for discharging the coating liquid; an angle adjustment plate (31) for adjusting the angle of the discharge tool (21) with respect to the coating surface in the discharge direction, the angle adjustment plate (31) being configured so as to be rotatable in a rotation direction along the plane of the angle adjustment plate (31) together with the discharge tool (21) and having a plurality of structure parts (35) provided at different positions in the rotation direction; and a positioning part (36) for positioning the angle of the discharge tool (21) by fixing the angle adjustment plate (31) in contact with at least one of the plurality of structure parts (35).

Description

Coating head and coating device equipped with same

[0001] The present invention relates to a coating head and a coating device including the same.

[0002] When it is necessary to apply a coating liquid locally and with high precision, a dispenser that discharges the coating liquid from the tip of a needle is used. For example, when bonding a quartz crystal oscillator element to a package in the manufacturing process of a quartz crystal oscillator, a dispenser is used to apply a conductive adhesive to the electrode surface. For example, in the manufacturing process of electronic components such as quartz crystal oscillators, which have been becoming increasingly miniaturized in recent years, further improvement in the positional accuracy of the coating is required for the coating devices used.

[0003] For example, Patent Document 1 discloses an adhesive application device that includes a parallel movement means for moving the application tool parallel to the application area, a vertical movement means for moving the application tool so that it has a vertical component relative to the application area, and an angle change means for changing the inclined angle of the application tool, wherein the angle change means is a stepping motor connected to approximately the center of gravity of the application tool in the longitudinal direction.

[0004] Japanese Patent Application Laid-Open No. 2006-175306

[0005] However, in the adhesive application device described in Patent Document 1, due to gear play in the stepping motor, etc., the angle of the application tool may fluctuate after the angle of the application tool is positioned, causing the application position to fluctuate.

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a coating head that can improve the positional accuracy of coating, and a coating device equipped with the same.

[0007] A coating head according to one aspect of the present invention is a coating head that applies a coating liquid to a coating surface, and includes: a discharge tool that discharges the coating liquid; an angle adjustment plate that adjusts the angle of the discharge direction of the discharge tool relative to the coating surface, the angle adjustment plate being configured to be rotatable together with the discharge tool in a rotational direction along the plane of the angle adjustment plate and having a plurality of structural parts provided at different positions in the rotational direction; and a positioning part that positions the angle of the discharge tool by contacting at least one of the plurality of structural parts and fixing the angle adjustment plate.

[0008] According to the present invention, it is possible to provide a coating head that can improve the positional accuracy of coating, and a coating device including the same.

[0009] Fig. 1 is a perspective view showing a coating device according to an embodiment of the present invention. Fig. 2 is a perspective view of a coating head. Fig. 3 is a front view of the coating head. Fig. 4 is a rear view of the coating head. Fig. 5 is a front view showing the coating head during angle adjustment. Fig. 6 is a rear view showing the coating head during angle adjustment. Fig. 7 is a rear view showing the coating head during angle adjustment. Fig. 8 is a diagram showing the relationship between a discharge tool whose angle has been adjusted and a coating surface.

[0010] The following describes embodiments of the present invention. In the following description of the drawings, the same or similar components are denoted by the same or similar reference numerals. The drawings are illustrative, and the dimensions and shapes of each part are schematic. The technical scope of the present invention should not be interpreted as being limited to the embodiments.

[0011] For the sake of convenience, each drawing is provided with an orthogonal coordinate system consisting of an X-axis, a Y-axis, and a Z-axis to explain the positional relationship, the movement direction, etc. The directions parallel to the X-axis, the Y-axis, and the Z-axis are defined as the X-axis direction, the Y-axis direction, and the Z-axis direction, respectively. For convenience, the positive Y-axis direction is defined as the front side, and the negative Y-axis direction is defined as the back side, but these designations do not limit the orientation of the coating device 1.

[0012] <Coating Apparatus> First, the configuration of a coating apparatus 1 according to one embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a perspective view showing a coating apparatus according to one embodiment of the present invention.

[0013] The coating device 1 includes a coating head 10 and a drive unit 50 .

[0014] The coating head 10 is a dispenser that applies a coating liquid to a coating surface. As an example, the coating surface is the surface of a package electrode of a quartz crystal resonator, and the coating liquid is a conductive adhesive that electrically connects the package electrode of the quartz crystal resonator and the quartz crystal resonator element. However, the coating surface and the coating liquid are not limited to those described above.

[0015] The drive unit 50 is an orthogonal robot that moves the coating head 10 in the X-axis, Y-axis, and Z-axis directions. The drive unit 50 has a Z-axis actuator 51, a Y-axis actuator 52, and an X-axis actuator 53. The Z-axis actuator 51 moves the coating head 10 along the Z-axis direction. The Z-axis actuator 51 moves the coating head 10, for example, in a direction perpendicular to the coating surface. The Y-axis actuator 52 moves the coating head 10 and the Z-axis actuator 51 along the Y-axis direction. The X-axis actuator 53 moves the coating head 10, the Z-axis actuator 51, and the Y-axis actuator 52 along the Z-axis direction. The drive unit 50 independently controls the movement of the coating head 10 in each of the X-axis, Y-axis, and Z-axis directions. For example, the drive unit 50 controls the Y-axis actuator 52 and the X-axis actuator 53 to move the coating head 10 directly above the coating surface, and controls the Z-axis actuator 51 to move the coating head 10 closer to or farther away from the coating surface. The Z-axis actuator 51 is an example of a first moving unit that moves the coating head 10 in a direction intersecting the coating surface. The Y-axis actuator 52 is an example of a second moving unit that moves the coating head 10 in a direction along the coating surface. The X-axis actuator 53 is an example of a third moving unit that moves the coating head 10 in a direction along the coating surface that intersects the movement direction of the second moving unit.

[0016] Next, the configuration of the coating head 100 will be described with reference to Figures 2 to 4. Figure 2 is a perspective view of the coating head. Figure 3 is a front view of the coating head. Figure 4 is a rear view of the coating head.

[0017] The application head 10 includes a discharge unit 20 , an angle adjustment unit 30 , and a base plate 40 .

[0018] The discharge unit 20 is a mechanism for discharging the coating liquid, and includes a needle 21, a syringe 22, a needle guide 23, a syringe holder 24, and a distance measurement sensor 25.

[0019] The needle 21 is a cylindrical member through which the coating liquid can pass, and has a base end provided on the positive Z-axis direction side and a tip end 21P provided on the negative Z-axis direction side. In the needle 21, the base end corresponds to an inlet for the coating liquid, and the tip end 21P corresponds to an outlet for the coating liquid. The needle 21 is an example of an ejection tool that ejects the coating liquid from the tip end 21P. The shape of the tip end 21P of the needle 21 is, for example, tapered, with the outer diameter decreasing as it approaches the tip surface facing the coating surface. The taper angle of the tapered tip end 21P is, for example, approximately 20 degrees. Note that the shape of the tip end 21P of the needle 21 is not limited thereto, and may be tapered with a suitable taper angle, or may be straight, with a constant outer diameter regardless of the distance from the tip surface.

[0020] In this embodiment, the discharge tool is a needle 21 having a point-like discharge hole for discharging the coating liquid, but the discharge tool is not limited to this. For example, the discharge tool may have a linear discharge hole. The shape of the discharge hole of the discharge tool may be polygonal, circular, elliptical, or a combination thereof.

[0021] The syringe 22 is a cylindrical member having a diameter larger than that of the needle 21, and has a base end provided on the positive side of the Z axis and a tip end provided on the negative side of the Z axis. The base end of the needle 21 is connected to the tip end of the syringe 22. The syringe 22 is an example of a reservoir that stores the coating liquid to be supplied to the discharge tool 21, and is also an example of a pressurizer that pressurizes the stored coating liquid and supplies it to the needle 21. The amount and speed of the coating liquid discharged from the needle 21 are controlled by the syringe 22.

[0022] The needle 21 is inserted into and held in the needle guide 23. The needle guide 23 is an example of a discharge tool holder that holds a discharge tool. The needle guide 23 is connected to an angle adjustment plate 31 (described later) and positions the needle 21 relative to the angle adjustment plate 31. In other words, the needle guide 23 keeps the position of the tip 21P of the needle 21 constant relative to the angle adjustment plate 31. When viewed from the front as shown in FIG. 3 , the base end of the needle 21 and the tip end of the syringe 22 are located inside the needle guide 23, and the tip 21P of the needle 21 protrudes from the needle guide 23 in the negative Z-axis direction.

[0023] The syringe holder 24 holds the syringe 22. The syringe holder 24 is an example of a reservoir holder that holds a reservoir. The syringe holder 24 is connected to an angle adjustment plate 31 (described later) and positions the syringe 22 relative to the angle adjustment plate 31. The syringe holder 24 has a U-shaped recess into which the syringe 22 fits, and the syringe 22 is fixed by narrowing this U-shaped recess.

[0024] The distance measurement sensor 25 measures the height of the needle 21. That is, the distance measurement sensor 25 measures the distance in the Z-axis direction between the tip 21P of the needle 21 and the application surface. The Z-axis actuator 51 is driven based on the measurement result of the distance measurement sensor 25, and the height of the needle 21 is controlled. The distance measurement sensor 25 is, for example, a laser path meter.

[0025] The angle adjustment unit 30 is a mechanism for adjusting the angle of the discharge unit 20. The angle adjustment unit 30 includes an angle adjustment plate 31, a guide pin 33A, guide bolts 33B and 33C, and a reference plate .

[0026] The angle adjustment plate 31 is a mechanism for adjusting the angle of the discharge direction of the coating liquid from the needle 21 relative to the coating surface. The angle adjustment plate 31 has a pair of main surfaces 31a, 31b extending along the ZX plane and facing each other in the Y-axis direction. The main surface 31a is provided on the front side, and the main surface 31b is provided on the back side. The main surfaces 31a, 31b include planes parallel to the ZX plane. The needle guide 23 and the syringe holder 24 are connected to the main surface 31a of the angle adjustment plate 31. In other words, the needle 21 and the syringe 22 are connected to the main surface 31a of the angle adjustment plate 31 via the needle guide 23 and the syringe holder 24, and the discharge unit 20 operates in conjunction with the angle adjustment plate 31. The main surface 31a of the angle adjustment plate 31 is slidably connected to the main surface on the front side of the base plate 40.

[0027] The angle adjustment plate 31, together with the discharge unit 20 connected to the main surface 31a, is configured to be rotatable in a rotational direction along a plane (ZX plane) included in the main surfaces 31a and 31b of the angle adjustment plate 31. In other words, the angle adjustment plate 31 and the needle 21 are configured to be rotatable within the ZX plane. The angle adjustment plate 31 rotates around the Y axis passing through the tip 21P of the needle 21 (hereinafter referred to as the "rotation center"). The discharge unit 20, which is linked to the angle adjustment plate 31, rotates within the ZX plane around the tip 21P as the rotation center, just like the angle adjustment plate 31. In other words, the angle of the needle 21 is adjusted around the tip 21P (hereinafter referred to as the "angle center CP").

[0028] The angular center CP of the needle 21, which is also the rotation center of the angle adjustment plate 31 and the discharge unit 20, is, for example, the center of the tip surface of the tip portion 21P that faces the application surface. The center of the tip surface of the tip portion 21P is the center of the discharge hole of the needle 21. Note that the angular center CP may be the edge of the discharge hole where the tip surface of the cylindrical tip portion 21P connects to the inner surface. The angular center CP may also be the end of the tip surface of the tip portion 21P. The end of the tip surface of the cylindrical tip portion 21P is the corner where the tip surface of the cylindrical tip portion 21P connects to the outer surface.

[0029] 2 and 3, the angle adjustment plate 31 is provided with guide slits 32A, 32B, and 32C. The guide slits 32A, 32B, and 32C penetrate the angle adjustment plate 31 in the Y-axis direction and open to both the main surface 31a and the main surface 31b. The guide slits 32A, 32B, and 32C are provided in the shape of concentric arcs centered on an angular center CP. The guide slit 32B is located on the angular center CP side of the guide slit 32A, and the guide slit 32C is located on the angular center CP side of the guide slit 32B.

[0030] The guide pin 33A is connected to the base plate 40 and inserted through the guide slit 32A. The guide bolt 33B has a tip connected to the base plate 40, a threaded portion inserted through the guide slit 32B, and a head located on the main surface 31a side of the angle adjustment plate 31. The guide bolt 33C has a tip connected to the base plate 40, a threaded portion inserted through the guide slit 32C, and a head located on the main surface 31a side of the angle adjustment plate 31. The diameter of the head of the guide bolt 33B is larger than the width of the guide slit 32B, and the diameter of the head of the guide bolt 33C is larger than the width of the guide slit 32C. The guide pin 33A moves relatively along the guide slit 32A, allowing the angle adjustment plate 31 to rotate in a rotational direction about the angular center CP of the angle adjustment plate 31, while suppressing movement of the angle adjustment plate 31 in a direction intersecting the rotational direction. Similarly, the guide bolt 33B moves relatively along the guide slit 32B, and the guide bolt 33C moves relatively along the guide slit 32C.

[0031] The clearance between guide pin 33A and guide slit 32A is smaller than the clearance between the threaded portion of guide bolt 33B and guide slit 32B, and is smaller than the clearance between the threaded portion of guide bolt 33C and guide slit 32C. By making the clearance of guide slit 32A, which is farthest from the angle center CP among guide slits 32A, 32B, and 32C the smallest, it is possible to suppress rattling during rotation of angle adjustment plate 31.

[0032] As shown in FIG. 4 , a plurality of grooves 35 are provided on the main surface 31b of the angle adjustment plate 31. The plurality of grooves 35 are an example of a plurality of structural portions provided at different positions in the rotation direction of the angle adjustment plate 31. Each of the plurality of grooves 35 is provided linearly in a direction intersecting the rotation direction of the angle adjustment plate 31. The groove 35 is tapered with inclined surfaces whose opening width increases in the opening direction, and is a V-shaped recess in which the inclined surfaces are connected at the bottom. The plurality of grooves 35 are aligned radially in the rotation direction of the angle adjustment plate 31. The spacing between the plurality of grooves 35 represents the resolution for adjusting the angle of the needle 21. For example, the plurality of grooves 35 are provided so that the angle of the needle 21 can be adjusted in 1-degree increments within an angle range of 0 degrees to 10 degrees.

[0033] In this embodiment, the plurality of structural portions are grooves 35 arranged linearly, but the present invention is not limited to this as long as the plurality of structural portions are configured to be able to contact the positioning portion. For example, the plurality of structural portions may be grooves arranged in a linear, curved, dotted, planar, or a combination thereof. Furthermore, the plurality of structural portions may be protrusions protruding from the plane (ZX plane) of the main surface 31b, or through holes penetrating the angle adjustment plate 31 along the Y-axis direction.

[0034] Furthermore, the angle range and angle resolution for adjusting the angle of the needle 21 are not limited to those described above. For example, the multiple grooves 35 may be provided so that the angle of the needle 21 can be adjusted in an angle range of -10 degrees or more and 0 degrees or less, or so that the angle can be adjusted in an angle range of -10 degrees or more and 10 degrees or less, or so that the angle can be adjusted in an angle range of 0 degrees or more and 20 degrees or less. The multiple grooves 35 may be provided so that the angle of the needle 21 can be adjusted in increments of 0.5 degrees, or so that the angle can be adjusted in increments of 2 degrees.

[0035] The reference plate 36 is a thin plate-like member that can move along the Y-axis direction and enter one of the grooves 35. When the reference plate 36 enters one of the grooves 35, it contacts both the inclined surface on one side of the angle adjustment plate 31 in the rotation direction and the inclined surface on the other side. This allows the reference plate 36 to limit the rotation of the angle adjustment plate 31 in both directions. The reference plate 36 is connected to the base plate 40 so as to be switchable between a movable state and a fixed state. For example, the reference plate 36 is connected to the base plate 40 by a screw. The screw is loosened to move the reference plate 36, and is tightened to fix the reference plate 36 to the base plate 40. The reference plate 36 is an example of a positioning unit that positions the angle of the discharge tool by contacting at least one of the structural units to fix the angle adjustment plate 31.

[0036] The positioning portion is not limited to a thin plate-shaped member, and the shape of the positioning portion is determined according to the shape of the structural portion. For example, if the structural portion is circular, the positioning portion may be circular and fit into the structural portion. The positioning portion may contact two or more structural portions instead of one structural portion to position the angle of the discharge tool. By fixing the angle adjustment plate by contacting two or more structural portions with the positioning portion, rattle of the angle adjustment plate can be reduced, and the accuracy of positioning the angle of the discharge tool by the positioning portion can be improved.

[0037] The base plate 40 connects the application head 10 to the drive unit 50. The back surface of the base plate 40 is connected to the Z-axis actuator 51, and the front surface of the base plate 40 is connected to the angle adjustment plate 31. In other words, the angle adjustment unit 30 is connected to the Z-axis actuator 51 via the base plate 40, and the discharge unit 20 is connected to the base plate 40 via the angle adjustment unit 30.

[0038] <Coating Method> Next, a coating method using the coating device 1 according to one embodiment of the present invention will be described with reference to Fig. 5 to Fig. 8. Fig. 5 is a front view showing the coating head during angle adjustment. Fig. 6 is a rear view showing the coating head during angle adjustment. Fig. 7 is a rear view showing the coating head during angle adjustment. Fig. 8 is a diagram showing the relationship between the discharge tool whose angle has been adjusted and the coating surface.

[0039] First, as shown in Fig. 5, the angle adjustment plate 31 is rotated by a desired rotation angle θ around the angle center CP. While the angle adjustment plate 31 is being rotated, the reference plate 36 is pulled toward the rear side and separated from the angle adjustment plate 31, as shown in Fig. 6.

[0040] 7, the reference plate 36 is moved to the front side and inserted into the groove 35, and the screws for fixing the reference plate 36 to the base plate 40 are tightened. This fixes the angle adjustment plate 31 to the base plate 40, and the angle of the needle 21 of the discharge unit 20 is positioned.

[0041] Next, as shown in FIG. 8 , the tip 21P of the needle 21 is brought close to the electrode surface SF of the electrode E provided inside the concave package PK. Specifically, the Z-axis actuator 51 is driven to lower the application head 10. At this time, the needle 21 is tilted from the Z axis by a rotation angle θ with the tip 21P as the angular center CP. The package PK has a bottom wall portion BT having upper and lower surfaces extending in the XY plane, and a side wall portion SD extending from the outer edge of the bottom wall portion BT in the positive direction of the Z axis. The electrode E is provided on the upper surface of the bottom wall portion BT near the side wall portion SD. Because the needle 21 is tilted away from the side wall portion SD with the tip 21P as the angular center, the needle 21 can be brought close to the electrode surface SF without colliding with the side wall portion SD. At this time, the needle 21 moves in a direction perpendicular to the electrode surface SF and approaches the electrode surface SF.

[0042] 8, a conductive adhesive AD is discharged from the tip 21P of the needle 21 brought close to the electrode surface SF of the electrode E. The conductive adhesive AD is applied to the vicinity of the side wall portion SD of the electrode surface SF. Finally, the needle 21 is moved in a direction perpendicular to the electrode surface SF to separate it from the electrode surface SF.

[0043] As described above, the coating head 10 according to one aspect of the present invention includes the needle 21 that discharges the coating liquid, the angle adjustment plate 31 that adjusts the angle of the discharge direction of the needle 21 relative to the coating surface, and the reference plate 36 that positions the angle of the needle 21. The angle adjustment plate 31 is configured to be rotatable together with the needle 21 in a rotational direction along the plane of the angle adjustment plate 31, and has a plurality of grooves 35 provided at different positions in the rotational direction. The reference plate 36 contacts at least one of the plurality of grooves 35 to fix the angle adjustment plate 31.

[0044] According to this aspect, even when an obstacle is present near the application surface, such as when applying the application liquid to an inner corner of a recess, the angle of the needle 21 can be adjusted to bring the needle 21 close to the application surface while avoiding contact between the obstacle and the needle 21. In other words, it is possible to suppress restriction of the application position to avoid contact between the needle 21 and the obstacle, and fluctuation of the application position due to contact of the needle 21 with the obstacle. It is also possible to suppress damage to the needle 21 due to collision between the obstacle and the needle 21.

[0045] Furthermore, the angle precision of the needle 21 is higher than in a configuration in which the angle of the needle 21 is adjusted by a stepping motor or the like. For example, in a configuration in which the angle of the needle 21 is adjusted by a stepping motor or the like, the angle of the needle 21 may fluctuate by the amount of gear play even after positioning. In contrast, in this embodiment, the angle of the needle 21 is positioned by physical contact between the multiple grooves 35 of the angle adjustment plate 31 and the reference plate 36, so there is almost no play compared to a stepping motor or the like, and fluctuations in the angle of the needle 21 after positioning are small. Therefore, the position precision of application can be improved.

[0046] Furthermore, the angle adjustment unit 30 including the groove portion 35 and the reference plate 36 is smaller than a stepping motor or the like, and therefore can prevent the application head 10 from becoming larger due to the angle adjustment function. The angle adjustment unit 30 is lighter than a stepping motor or the like, and therefore can prevent the application head 10 from becoming misaligned due to the weight of the application head 10. The angle adjustment unit 30 has a simpler structure than a stepping motor or the like, and therefore can improve the maintainability of the application head 10.

[0047] In one aspect of the above, the angle adjusting plate 31 and the needle 21 are configured to be rotatable around the tip 21P of the needle 21 from which the coating liquid is ejected.

[0048] According to this aspect, since the position of the tip 21P of the needle 21 is small when adjusting the angle of the needle 21, it is possible to suppress a decrease in the monitoring accuracy and position control accuracy of the tip 21P due to fluctuations in the position of the tip 21P after the angle adjustment.

[0049] In one aspect of the above, each of the multiple grooves 35 is a groove provided in a straight line extending in a direction intersecting the rotation direction, and the reference plate 36 is configured to be insertable into the inside of the groove 35.

[0050] According to this embodiment, the groove 35 and the reference plate 36 come into contact over a wide area in a direction intersecting the rotation direction. Since displacement in a direction intersecting the contact surface is limited, the extension of the contact surface in a direction intersecting the rotation direction effectively limits fluctuations in the rotation direction of the angle adjustment plate 31. Therefore, fluctuations in the angle adjustment plate 31 after positioning can be further suppressed.

[0051] In one aspect of the above, the plurality of grooves 35 are tapered, each having an inclined surface whose opening width increases in the opening direction.

[0052] According to this aspect, the reference plate 36 contacts both the inclined surface on one side of the groove 35 in the rotation direction of the angle adjustment plate 31 and the inclined surface on the other side. This allows the reference plate 36 to limit the rotation of the angle adjustment plate 31 in both directions in the rotation direction. This further suppresses fluctuations in the angle adjustment plate 31 after positioning.

[0053] In one aspect of the above, the coating device 1 includes a Z-axis actuator 51 that moves the coating head 10 in a direction perpendicular to the coating surface.

[0054] According to this embodiment, the needle 21 can be moved toward or away from the application surface using only the Z-axis actuator 51. Therefore, the accuracy of control over the position of the tip 21P of the needle 21 can be improved compared to a configuration in which the needle is moved along the angular direction of the needle.

[0055] Some or all of the embodiments of the present invention will be described below, but the present invention is not limited to the following descriptions.

[0056] [Note 1] A coating head that coats a coating liquid onto a coating surface, comprising: a discharge tool that discharges the coating liquid; an angle adjustment plate that adjusts the angle of the discharge direction of the discharge tool relative to the coating surface, the angle adjustment plate being configured to be rotatable together with the discharge tool in a rotational direction along the plane of the angle adjustment plate and having a plurality of structural parts provided at different positions in the rotational direction; and a positioning part that positions the angle of the discharge tool by contacting at least one of the plurality of structural parts to fix the angle adjustment plate.

[0057] [Supplementary Note 2] The coating head according to [Supplementary Note 1], wherein the angle adjustment plate and the discharge tool are configured to be rotatable in a rotational direction around a tip of the discharge tool from which the coating liquid is discharged.

[0058] [Appendix 3] The coating head according to [Appendix 1] or [Appendix 2], wherein each of the plurality of structural parts is a groove part provided linearly extending in a direction intersecting the rotation direction, and the positioning part is configured to be insertable into the inside of the groove part.

[0059] [Supplementary Note 4] The coating head according to [Supplementary Note 3], wherein the plurality of grooves are tapered with inclined surfaces whose opening widths increase in the opening direction.

[0060] [Appendix 5] The coating head according to any one of [Appendix 1] to [Appendix 4], further comprising: a reservoir that stores the coating liquid to be supplied to the discharge tool; a discharge tool holding section that holds the discharge tool; and a reservoir holding section that holds the reservoir, wherein the discharge tool holding section and the reservoir holding section are attached to the angle adjustment plate.

[0061] [Appendix 6] A coating device comprising: a coating head according to any one of [Appendix 1] to [Appendix 5]; a first moving unit that moves the coating head in a direction intersecting with the coating surface; a second moving unit that moves the coating head in a direction along the coating surface; and a third moving unit that moves the coating head in a direction along the coating surface and intersecting with the movement direction of the second moving unit.

[0062] As described above, according to one aspect of the present invention, it is possible to provide a coating head that can improve the positional accuracy of coating, and a coating device including the same.

[0063] The application head may further include an encoder that detects the angle of the dispensing tool. For example, the application head may further include a read head that is provided on the base plate and reads the plurality of structures provided on the angle adjustment plate as an encoder scale. The application head may also include an encoder scale provided on the angle adjustment plate, separate from the plurality of structures.

[0064] The above-described embodiments are intended to facilitate understanding of the present invention and are not intended to limit the present invention. The elements of the embodiments, as well as their arrangement, materials, conditions, shapes, sizes, etc., are not limited to those illustrated and can be modified as appropriate. Furthermore, configurations shown in different embodiments can be partially substituted or combined with each other.

[0065] DESCRIPTION OF SYMBOLS 1... Coating device 10... Coating head 20... Discharge unit 21... Needle 21P... Tip portion CP... Angle center 22... Syringe 23... Needle guide 24... Syringe holder 25... Distance measurement sensor 30... Angle adjustment unit 31... Angle adjustment plate 32A, 32B, 32C... Guide slit 33A... Guide pin 33B, 33C... Guide bolt 35... Groove portion 36... Reference plate 40... Base plate 50... Drive unit 51... Z-axis actuator 52... Y-axis actuator 53... X-axis actuator

Claims

1. A coating head for coating a coating liquid onto a coating surface, comprising: a discharge tool for discharging the coating liquid; an angle adjustment plate for adjusting the angle of the discharge direction of the discharge tool relative to the coating surface, the angle adjustment plate being configured to be rotatable together with the discharge tool in a rotational direction along the plane of the angle adjustment plate and having a plurality of structural parts provided at different positions in the rotational direction; and a positioning part for positioning the angle of the discharge tool by contacting at least one of the plurality of structural parts to fix the angle adjustment plate.

2. The coating head according to claim 1, wherein the angle adjustment plate and the discharge tool are configured to be rotatable in the rotation direction around the tip of the discharge tool from which the coating liquid is discharged.

3. The coating head described in claim 1, wherein each of the plurality of structural portions is a groove portion provided in a straight line extending in a direction intersecting the rotation direction, and the positioning portion is configured to be insertable into the interior of the groove portion.

4. The coating head according to claim 3, wherein the plurality of grooves are tapered with an inclined surface whose opening width increases in the opening direction.

5. The coating head described in claim 1, further comprising: a reservoir for storing the coating liquid to be supplied to the discharge tool; a discharge tool holding part for holding the discharge tool; and a reservoir holding part for holding the reservoir, wherein the discharge tool holding part and the reservoir holding part are attached to the angle adjustment plate.

6. A coating device comprising: a coating head as described in any one of claims 1 to 5; a first moving unit that moves the coating head in a direction perpendicular to the coating surface; a second moving unit that moves the coating head in a direction along the coating surface; and a third moving unit that moves the coating head in a direction along the coating surface that intersects with the movement direction of the second moving unit.

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