Coating device and manufacturing method of object coated with coating material

Abstract

To provide a coating device which can change the coating width with high accuracy and a manufacturing method of an object coated with a coating material.SOLUTION: A coating device 1 comprises: a die head 10; and a reciprocating device 30 which has a motor 31 and a slider 33. The die head 10 includes a fixed die head 11 and a movable die head 15 that can move relative to the fixed die head 11. A discharge port 19 through which a coating material C is discharged is formed between the fixed die head 11 and the movable die head 15. An opening area of the discharge port 19 is variable with the movement of the movable die head 15. The movable die head 15 is attached to the slider 33 which is linearly reciprocated by the motor 31. The operation of the reciprocating device 30 allows the movable die head 15 to linearly reciprocate. A manufacturing method of an object coated with a coating material includes the steps of: arranging the coating object on a base; coating the coating material C discharged from the coating device 1 to the coating object; and taking out the coating object coated with the coating material C from the base.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a coating device and a method for manufacturing an object coated with a coating substance, and more particularly to a coating device capable of changing a coating width and a method for manufacturing an object coated with a coating substance. [Background technology]

[0002] For example, there is a coating device having a die head for coating a coating material such as an adhesive on a substrate. Such coating devices generally coat the coating material so as to form a rectangular coating film, but some coating devices are capable of changing the coating width so as to coat the coating material so as to form a coating film having a curved portion such as a circle. As a coating device with a variable coating width, there is one in which a slit-shaped nozzle is formed on the joint surface between a fixed die plate and a movable die plate, and the slit length is changed by sliding the movable die plate with a sliding mechanism (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-97000 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the coating device described in Patent Document 1 transmits the rotation of the motor to a screw shaft connected to the movable die plate via a gear train consisting of multiple gears, making it difficult to adjust the slit length to the intended length due to gear backlash, etc.

[0005] In view of the above-mentioned problems, the present disclosure relates to providing a coating device capable of changing the coating width with high precision and a method for manufacturing an object coated with a coating substance. [Means for solving the problem]

[0006] A coating device according to a first aspect of the present disclosure comprises a die head having a fixed die head and a movable die head movable relative to the fixed die head, wherein an outlet through which a coating substance is ejected is formed between the fixed die head and the movable die head, and the opening area of ​​the outlet can be changed by moving the movable die head, and a reciprocating device having a motor and a slider that moves back and forth linearly by operation of the motor, wherein the movable die head is attached to the slider, and the movable die head moves back and forth linearly by operation of the reciprocating device.

[0007] With this configuration, the amount of movement of the slider is directly reflected in the amount of movement of the movable die head, so that the movable die head can be moved quickly and with high accuracy.

[0008] In addition, a coating device according to a second aspect of the present disclosure may be the coating device according to the first aspect of the present disclosure, further comprising a pressing member that presses the movable die head toward the fixed die head.

[0009] With this configuration, it is possible to prevent the fixed die head and the movable die head from unintentionally separating from each other.

[0010] In addition, as a coating device according to a third aspect of the present disclosure, in the coating device according to the first aspect of the present disclosure, the pressing member may have a linear guide, and a rail of the linear guide may be fixed to the movable die head.

[0011] With this configuration, the movable die head can be moved along a predetermined trajectory relative to the pressing member.

[0012] In addition, as a coating device according to a fourth aspect of the present disclosure, in a coating device according to any one of the first to third aspects of the present disclosure, the fixed die head and the movable die head may have an engaging structure on their opposing surfaces.

[0013] With this configuration, the movable die head can be moved along a predetermined trajectory relative to the fixed die head.

[0014] Furthermore, as a coating device relating to a fifth aspect of the present disclosure, in a coating device relating to any one of the second to fourth aspects of the present disclosure, the fixed die head and the movable die head may have a temporary fixing mechanism that temporarily fixes the fixed die head and the movable die head, and the fixed die head and the pressing member may have a final fixing mechanism that fixes the fixed die head and the pressing member.

[0015] With this configuration, the fixed die head and the pressing member can be permanently fixed while the fixed die head and the movable die head are temporarily fixed, and even if the temporary fixation is subsequently released, the distance between the fixed die head and the movable die head can be appropriately maintained.

[0016] In addition, as a coating device according to a sixth aspect of the present disclosure, in a coating device according to any one of the first to fifth aspects of the present disclosure, the die head may have a resin shim provided between the fixed die head and the movable die head.

[0017] With this configuration, since the resin shim is provided, it is possible to reduce friction on the sliding surfaces between the fixed die head and the movable die head, and also to reduce leakage of the coating substance.

[0018] In addition, as a coating apparatus according to a seventh aspect of the present disclosure, in the coating apparatus according to the sixth aspect of the present disclosure, the shim may be formed of at least one material selected from the group consisting of PEEK, polyacetal, ultra-high molecular weight polyethylene, PBT, and PPS.

[0019] With this configuration, it is possible to improve the abrasion resistance and further reduce leakage of the coating material.

[0020] A method for manufacturing a coated object according to an eighth aspect of the present disclosure is a method for manufacturing a coated object having a coating substance applied thereto with a coating substance ejected by an application device according to any one of the first to seventh aspects of the present disclosure, and comprises the steps of placing the object to be coated with the coating substance on a receiving table, applying the coating substance ejected from the application device to the object to be coated placed on the receiving table, and removing the object to which the coating substance has been applied from the receiving table.

[0021] With this configuration, it is possible to rapidly manufacture a coating substance-coated object on which the coating substance is coated with high precision. Effect of the Invention

[0022] According to the present disclosure, the amount of movement of the slider is directly reflected in the amount of movement of the movable die head, so that the movable die head can be moved quickly and with high accuracy. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2A is an exploded perspective view of a coating device according to an embodiment, and FIG. 2B is a vertical sectional view of the coating device. [Diagram 2] FIG. 2A is a front view of a fixed die head provided in a coating apparatus according to one embodiment, and FIG. 2B is a front view of a movable die head provided in the coating apparatus according to one embodiment. [Diagram 3] 1A to 1C are plan views illustrating examples of how a coating substance is applied to a coated object. [Figure 4] 1 is a flowchart illustrating a method for manufacturing a coating substance-coated object according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment will be described with reference to the drawings. In the drawings, the same or similar reference numerals are used to designate the same or corresponding parts, and duplicated explanations will be omitted.

[0025] First, referring to FIG. 1(A) and FIG. 1(B), a coating device 1 according to an embodiment will be described. FIG. 1(A) is an exploded perspective view of the coating device 1, and FIG. 1(B) is a vertical cross-sectional view of the coating device 1. The coating device 1 is a device that coats a coating substance C and can change the coating width while coating the coating substance C. The coating substance C coated by the coating device 1 may be, for example, a resin such as an adhesive, and typically has a predetermined viscosity with fluidity while being coated, and the viscosity increases with the passage of time after coating, and finally loses fluidity and hardens. Hereinafter, the configuration of the coating device 1 will be described first. The coating device 1 includes a die head 10, a moving device 30, and a pressing member 50.

[0026] The die head 10 has a fixed die head 11, a movable die head 15, and a shim 21. The die head 10 has a slit-shaped discharge port 19 between the fixed die head 11 and the movable die head 15 by sandwiching the shim 21 between the fixed die head 11 and the movable die head 15. The discharge port 19 is an opening through which the coating material C is discharged, and is typically formed in the lower part of the die head 10. The die head 10 also has an inlet (not shown) through which the coating material C is supplied from the outside. The die head 10 is configured so that the opening area (length of the slit) of the discharge port 19 can be changed by moving the movable die head 15 relative to the fixed die head 11 along the surface where the two face each other. Hereinafter, for convenience of explanation, as shown in FIG. 1(A), the direction in which the movable die head 15 moves (width direction of the discharge port 19) may be referred to as the X direction, the direction in which the fixed die head 11 and the movable die head 15 overlap may be referred to as the Y direction, and the height direction of the die head 10 may be referred to as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0027] The fixed die head 11 is typically made of metal and formed in a roughly thick plate shape. The length of the fixed die head 11 in the X direction may be determined according to the size of the work (coating target) to which the coating material C is to be applied. The surface of the fixed die head 11 facing the movable die head 15 (hereinafter referred to as the "first opposing surface 12") is generally flat, and a plurality of bolt holes 13 (see FIG. 1(B)) are formed therein. The bolt holes 13 are holes into which cam follower bolts 25 (see FIG. 1(B)) are attached. In order to avoid complicating the drawing, the bolt holes 13 and the cam follower bolts 25 are omitted from FIG. 1(A). The cam follower bolts 25 attach the fixed shim 22 of the shim 21 to the fixed die head 11, and rotate with the movement of the movable die head 15 while the outer ring is in contact with the movable die head 15.

[0028] As is clear when also referring to the front view of the fixed die head 11 shown in FIG. 2(A), the cam follower bolts 25 are arranged at intervals in the X direction. In other words, the fixed die head 11 has a plurality of bolt holes 13 (see FIG. 1(B)) arranged at intervals in the X direction. In addition, a plurality of first temporary fixing holes 28 are formed in the first opposing surface 12. Each of the first temporary fixing holes 28 is formed between the bolt holes 13. Therefore, the first opposing surface 12 has the bolt holes 13 and the first temporary fixing holes 28 alternately formed at appropriate intervals on a virtual straight line extending in the X direction. The use of the first temporary fixing holes 28 will be described later. The bolt holes 13 and the first temporary fixing holes 28 are typically formed above half the height (distance in the Z direction) of the fixed die head 11, and in this embodiment, they are formed at a position about 1 / 3 below the top of the fixed die head 11. The fixed die head 11 is formed such that the thickness (distance in the Y direction) of the thick plate is greater than the depths of the bolt holes 13 and the first temporary fixing holes .

[0029] The movable die head 15 is typically made of metal and formed in a roughly thick plate shape. The side shape (shape in the YZ plane) of the movable die head 15 is typically formed symmetrically with respect to the side shape of the fixed die head 11 (line symmetry with the first opposing surface 12 as the axis of symmetry). The length of the movable die head 15 in the X direction is typically greater than the length of the fixed die head 11 in the X direction. The surface of the movable die head 15 facing the fixed die head 11 (hereinafter referred to as the "second opposing surface 16") is generally formed flat, and a bolt groove 17 is formed therein. The bolt groove 17 is a groove that accommodates a plurality of cam follower bolts 25 attached to the fixed die head 11.

[0030] As is clear when also referring to the front view of the movable die head 15 shown in FIG. 2(B), the bolt groove 17 is formed over the entire second opposing surface 16 in the X direction. The height (distance in the Z direction) of the bolt groove 17 is formed to a height equivalent to the diameter of the outer ring of the cam follower bolt 25. In addition, the bolt groove 17 is formed at a position corresponding to the cam follower bolt 25 when the first opposing surface 12 and the second opposing surface 16 are combined to form the die head 10. A plurality of second temporary fixing holes 29 are formed in the bolt groove 17 (at the bottom of the groove). The plurality of second temporary fixing holes 29 are typically formed at the same intervals as the first temporary fixing holes 28 (see FIG. 1(A)), but may also be formed at a position corresponding to the bolt hole 13. The second temporary fixing holes 29 penetrate to the back surface of the second opposing surface 16 in the movable die head 15. The use of the second temporary fixing holes 29 will be described later.

[0031] The multiple cam follower bolts 25 attached to the first opposing surface 12 and the bolt grooves 17 formed in the second opposing surface 16 correspond to an interlocking structure in which the cam follower bolts 25 are fitted into the bolt grooves 17. This interlocking structure contributes to guiding the direction in which the movable die head 15 moves relative to the fixed die head 11. In this embodiment, the interlocking structure is structured such that the movable die head 15 and the fixed die head 11 are relatively movable in the direction in which the bolt grooves 17 extend, i.e., in the direction in which the cam follower bolts 25 are arranged.

[0032] The movable die head 15 has a rail groove 18 formed on the back surface of the second opposing surface 16. The rail groove 18 is a groove into which a rail 56 of a linear guide 55, which is a component of the pressing member 50, is fitted. The rail groove 18 is for determining the position of the rail 56 with respect to the movable die head 15, so it is sufficient for the rail groove 18 to have a depth that allows the rail 56 to be fitted in without moving with respect to the movable die head 15. The rail groove 18 is typically formed to extend parallel to the bolt groove 17.

[0033] The shim 21 is typically a resin shim plate. In this embodiment, the shim 21 has a fixed shim 22 and a movable shim 23. The fixed shim 22 is attached to the first opposing surface 12 of the fixed die head 11. In this embodiment, the fixed shim 22 is a rectangular shape having the same shape as the first opposing surface 12, with the middle part of the side corresponding to the discharge port 19 side cut out. The fixed shim 22 is attached to the first opposing surface 12 by a cam follower bolt 25. The movable shim 23 is attached to the second opposing surface 16 of the movable die head 15. The movable shim 23 is formed to a size that fills a part of the cut-out part of the fixed shim 22, and is formed in an elongated rectangular shape in this embodiment. The fixed shim 22 and the movable shim 23 are sandwiched between the first opposing surface 12 and the second opposing surface 16 so as not to overlap each other, and function as the shim 21.

[0034] The shim 21 has a role of determining the size of the discharge port 19 of the die head 10. Typically, the thickness of the shim 21 is the thickness (distance in the Y direction) of the slit-shaped discharge port 19. Also, the distance between the fixed shim 22 and the movable shim 23 when the inside of the die head 10 is viewed from the discharge port 19 is the length (distance in the X direction) of the slit-shaped discharge port 19. The shim 21 is configured such that the distance between the fixed shim 22 and the movable shim 23 changes as the movable shim 23 moves in the X direction in conjunction with the movement of the movable die head 15, thereby changing the opening area of ​​the discharge port 19.

[0035] The shim 21 may be formed of an appropriate material in terms of wear resistance, dimensional accuracy (machining accuracy), sealing ability (sealing ability), chemical resistance, uniformity, and / or hardness. The shim 21 may be formed of at least one material selected from the group consisting of PEEK (polyether ether ketone), polyacetal, ultra-high molecular weight polyethylene, PBT (polybutylene terephthalate), and PPS (polyphenylene sulfide). In particular, when the above characteristics are taken into consideration comprehensively, it is optimal to form the shim 21 from PEEK, and the following materials may be adopted as the materials for the shim 21 in the order of priority listed below. However, when sealing ability is more important than dimensional accuracy, ultra-high molecular weight polyethylene may be prioritized over polyacetal, and when dimensional accuracy and sealing ability are more important than wear resistance, PBT or PPS may be prioritized over polyacetal or ultra-high molecular weight polyethylene. The shim 21 may be formed of Unilate (registered trademark) depending on the usage situation. The shim 21 is formed from the type of resin described above, thereby making it possible to prevent the fixed die head 11 and the movable die head 15, both of which are made of metal, from directly rubbing against each other.

[0036] The moving device 30 is a device that moves the movable die head 15 relative to the fixed die head 11. A single-axis robot is typically used as the moving device 30, but a linear motor or other device capable of linear movement may also be used. As shown in FIG. 1(A) (not shown in FIG. 1(B)), the moving device 30 has a motor 31, a ball screw 32, and a slider 33. In the moving device 30, the ball screw 32 rotates around its axis due to the operation of the motor 31, and the slider 33 inserted into the ball screw 32 moves along the axis of the ball screw 32 due to the rotation of the ball screw 32. The moving device 30 can move the slider back and forth linearly via the ball screw 32 by rotating the shaft of the electrically operated motor 31 in the forward or reverse direction, and corresponds to a reciprocating moving device.

[0037] The moving device 30 is fixed to a position adjustment plate 88 to which the fixed die head 11 is fixed, and the motor 31 and the ball screw 32 are not moved relative to the position adjustment plate 88. In the moving device 30, the slider 33 is connected to the movable die head 15 via a mounting fixture 35. With this configuration, the movable die head 15 moves linearly back and forth in conjunction with the linear reciprocating movement of the slider 33. In this embodiment, since a single-axis robot is used as the moving device 30, backlash that occurs when the slider 33 is moved by combining gears as in the conventional case can be suppressed when changing the moving direction of the slider 33, and highly accurate positioning can be achieved.

[0038] The pressing member 50 is a member that presses the movable die head 15 toward the fixed die head 11. The pressing member 50 is provided so as to enclose the movable die head 15 from the opposite side of the fixed die head 11, and is fixed to the fixed die head 11. When the pressing member 50 presses the movable die head 15 toward the fixed die head 11, the pressing member 50 presses the movable die head 15 so that the movable die head 15 can move relative to the fixed die head 11. The distance of the pressing member 50 in the X direction is smaller than the distance of the fixed die head 11 in the X direction, and the portions through which the first temporary fixing hole 28 and the second temporary fixing hole 29 pass appear on the left and right outer sides of the pressing member 50 in the X direction. The pressing member 50 has a cover 51 and a linear guide 55. In FIG. 1(A), the cover 51 and the linear guide 55 are shown separately for understanding the configuration, but in reality, the linear guide 55 is fixed to the cover 51.

[0039] In this embodiment, the cover 51 has a vertical cover 52 and a horizontal cover 53. The vertical cover 52 is disposed opposite to the surface of the movable die head 15 on which the rail groove 18 is formed. A linear guide 55 is attached to the vertical cover 52. The vertical cover 52 presses the movable die head 15 toward the fixed die head 11 (in the Y direction) via the linear guide 55. The horizontal cover 53 is disposed so as to cover the upper part of the die head 10. The horizontal cover 53 extends from the upper part of the vertical cover 52, beyond the upper part of the movable die head 15, to the upper part of the fixed die head 11. The horizontal cover 53 has a plurality of elongated holes 54 for passing bolts (not shown) at the position of the upper part of the fixed die head 11 in a state in which the pressing member 50 is attached. The horizontal cover 53 is fixed to the fixed die head 11 by the bolts passing through the elongated holes 54. Therefore, a screw hole for fastening the bolt for fixing the pressing member 50 is formed on the upper surface of the fixed die head 11. In this embodiment, the vertical cover 52 and the horizontal cover 53 are formed separately and joined by bolts, but they may be formed as one unit.

[0040] The linear guide 55 is a member provided to smoothly move the movable die head 15 relative to the fixed die head 11 while pressing the movable die head 15 toward the fixed die head 11 by the cover 51. The linear guide 55 has a rail 56 and a carriage 57. The rail 56 is a member for guiding the movement of the carriage 57 and is formed in a straight line. The carriage 57 has a ball spline inside and can move on the rail 56 with a low load. In this embodiment, the rail 56 is fixed to the rail groove 18 of the movable die head 15, and the carriage 57 is fixed to the vertical cover 52. The movable die head 15 is supported by a plurality of cam follower bolts 25 on the second opposing surface 16 and supported by the rail 56 on the opposite surface, so that it can move stably and smoothly relative to the fixed die head 11.

[0041] In this embodiment, the coating apparatus 1 configured as described above includes a single-axis robot 81 separate from the moving device 30 so that the entire die head 10 can also move back and forth in a straight line. The slider of the single-axis robot 81 is connected to a position adjustment plate 88 to which the fixed die head 11 is fixed via a connecting member 85. The position adjustment plate 88 is connected to a stand 83 to which the single-axis robot 81 is fixed by a linear guide having a configuration similar to that of the linear guide 55.

[0042] In order to apply the coating material C with high accuracy, the coating device 1 should be appropriately constructed when assembling. The procedure for appropriately constructing the coating device will be described below. Prior to the description of the following construction procedure, the following is performed. A fixed shim 22 is attached to the first opposing surface 12 of the fixed die head 11 using a cam follower bolt 25. A movable shim 23 is attached to the second opposing surface 16 of the movable die head 15. The attachment tool 35 attached to the moving device 30 and the movable die head 15 are separated. The moving device 30 separated from the movable die head 15 is separated from the position adjustment plate 88 in FIG. 1(A) for the sake of convenience of explanation, but is actually fixed to the position adjustment plate 88. The description of the construction procedure will begin from this state.

[0043] From the above state, the movable die head 15 is aligned with the fixed die head 11, and the pressing member 50 is positioned so as to cover the fixed die head 11 and the movable die head 15. After the pressing member 50 is positioned, a bolt is passed through the long hole 54 of the horizontal cover 53, and the bolt is screwed into a screw hole formed on the upper surface of the fixed die head 11 for temporary tightening. The temporary tightening here means that the bolt is tightened while leaving a space for the movable die head 15 to move relative to the fixed die head 11. At this time, the movable die head 15 is supported by the cam follower bolt 25 attached to the fixed die head 11 and the rail 56 of the pressing member 50, so that it will not fall off.

[0044] After the pressing member 50 is temporarily fixed to the fixed die head 11, a bolt is passed through the second temporary fixing hole 29 (see FIG. 2(B)) from the side of the surface on which the rail groove 18 of the movable die head 15 is formed, and then screwed into the first temporary fixing hole 28 (see FIG. 2(A)) formed in the fixed die head 11. The bolt screwed into the first temporary fixing hole 28 through the second temporary fixing hole 29 is screwed into the outside of the left and right sides of the pressing member 50, and is intended to be removed later, so it can be said to be temporary fixation. The temporary fixation here is performed by firmly fixing the first opposing surface 12 and the second opposing surface 16 so that they are in close contact with each other via the shim 21. This temporary fixation can prevent a gap from being generated between the first opposing surface 12 and / or the second opposing surface 16 and the shim 21, and can prevent the coating material C from unintentionally leaking from the die head 10. In this embodiment, first temporary fixing hole 28, second temporary fixing hole 29, and a bolt that is screwed into first temporary fixing hole 28 through second temporary fixing hole 29 correspond to the temporary fixing mechanism.

[0045] After the fixed die head 11 and the movable die head 15 are temporarily fixed, the bolt passing through the long hole 54 is further screwed into the screw hole on the upper surface of the fixed die head 11 while the pressing member 50 is pressed toward the movable die head 15 and in close contact with it. In this way, the pressing member 50 is firmly fixed to the fixed die head 11. The fixing performed here is maintained even during operation of the coating device 1, and can be said to be a permanent fixation. In this embodiment, the long hole 54, the screw hole formed on the upper surface of the fixed die head 11, and the bolt screwed into the screw hole formed on the upper surface of the fixed die head 11 through the long hole 54 correspond to the permanent fixation mechanism. After the pressing member 50 is permanently fixed to the fixed die head 11, the bolt screwed into the first temporary fixation hole 28 through the second temporary fixation hole 29 is removed. As a result, the movable die head 15 becomes movable in the X direction relative to the fixed die head 11 while being maintained in an appropriate position relative to the fixed die head 11.

[0046] As shown in FIG. 3, the coating device 1 (only the die head 10 is shown in FIG. 3 for convenience) is typically disposed above a receiving table 99 on which a workpiece W as a coating target to which the coating substance C is applied is placed, with the discharge port 19 (see FIG. 1(B)) facing downward. Then, the coating substance C is discharged from the discharge port 19 at an appropriate position, while the receiving table 99 on which the workpiece W is placed is moved in the Y direction (moved from the bottom to the top of the paper in FIG. 3 in this embodiment), so that the coating substance C is applied to the workpiece W. While the coating substance C is being discharged toward the workpiece W, the movable die head 15 is moved relative to the fixed die head 11 by the moving device 30, so that the width (length in the X direction) of the coating substance C applied to the workpiece W can be changed. In addition, the single-axis robot 81 moves the entire die head 10 in the X direction, so that the position at which the coating substance C is applied to the workpiece W can be changed.

[0047] Next, referring to FIG. 4, a method for manufacturing a coated substance-coated object (hereinafter referred to as a "coated workpiece CW") in which a workpiece W is coated with a coating substance C will be described. FIG. 4 is a flow chart illustrating the steps for manufacturing the coated workpiece CW. The coated workpiece CW described here is manufactured using the coating apparatus 1 described above. The following description of the method for manufacturing the coated workpiece CW also includes a description of the operation of the coating apparatus 1. In the following description, when referring to the configuration of the coating apparatus 1, reference will be made to FIGS. 1(A) to 3 as appropriate. The operation of the coating apparatus 1 in the following description is typically performed by a control device (not shown).

[0048] When the production of the coated workpiece CW is started, the workpiece W to be coated with the coating substance C is placed on the receiving table 99 (S1). The workpiece W may be placed on the receiving table 99 by a robot hand (not shown) or an operator. If the receiving table 99 is provided with a fixing means (not shown), after the workpiece W is placed on the receiving table 99, the fixing means (not shown) may be used to fix the workpiece W so that it does not move relative to the receiving table 99.

[0049] When the workpiece W is placed on the receiving table 99, the receiving table 99 starts moving in the Y direction, and the coating material C is discharged from the discharge port 19 of the die head 10 at an appropriate time, and the coating material C discharged from the discharge port 19 is applied to the workpiece W (S2). As described above, while the coating material C is being discharged toward the workpiece W, the movable die head 15 and / or the entire die head 10 are moved back and forth in the X direction, so that the width of the coating material C applied to the workpiece W and the coating position relative to the workpiece W can be appropriately changed. This makes it possible to form a film of the coating material C of various shapes, such as a circle, an ellipse, a triangle, a quadrangle including a rectangle or a trapezoid, a polygon such as a pentagon, etc., on the workpiece W. At this time, the movable die head 15 is moved by the moving device 30 using a single-axis robot, and the entire die head 10 is moved by the single-axis robot 81, so that it can be moved quickly with high precision. Therefore, if the distance is short, the coating width (distance in the X direction) can be changed instantly, and the coating substance C can be coated in a shape having steps that are nearly at right angles, such as the film of coating substance C shown in Fig. 3. In addition, since the shim 21 is made of a resin such as PEEK, damage caused by friction to the first opposing surface 12 and the second opposing surface 16 that slide against the shim 21 can be reduced, and leakage of the coating substance C from the sliding surfaces can be reduced. When the coating of the coating substance C to the workpiece W is completed, a coated workpiece CW is produced.

[0050] Once the coated workpiece CW has been generated, it is removed from the receiving table 99 (S3). Removal of the coated workpiece CW from the receiving table 99 may be performed by a robot hand (not shown) or by an operator. At this time, if the workpiece W is fixed to the receiving table 99 by a fixing means (not shown), the fixing means (not shown) is removed before the workpiece W is removed. This completes the production of one coated workpiece CW. Once the production of one coated workpiece CW is complete, it is determined whether there is another workpiece W to be coated with the coating substance C (S4). If there is a next workpiece W, the process returns to the step (S1) of placing the workpiece W on the receiving table 99, and the above-mentioned procedure is repeated thereafter. If there is no next workpiece W, the production of the coated workpiece CW is completed.

[0051] As described above, according to the coating device 1 of this embodiment, the moving device 30 using a single-axis robot directly moves the movable die head 15, so that the movable die head 15 can be moved quickly with high accuracy. As a result, the coating material C of various shapes can be applied to the workpiece W as intended, and fine adjustment of the width is possible even for a workpiece W with a narrow frame, for example. In addition, since the fixed die head 11 and the movable die head 15 are held by the pressing member 50 having the linear guide 55, the movable die head 15 can be moved on a predetermined trajectory while suppressing unintentional separation from the fixed die head 11. In addition, the fixed die head 11 and the movable die head 15 have a fitting structure in which the cam follower bolt 25 fits into the bolt groove 17, so that the movable die head 15 can be moved stably and smoothly. In addition, the fixed shim 22 can be removed from the fixed die head 11 simply by removing the pressing member 50 from the die head 10, separating the movable die head 15 from the fixed die head 11, and removing the cam follower bolt 25 from the fixed die head 11. This allows the fixed shim 22 to be easily cleaned or replaced. In addition, by assembling the coating device 1 using the first temporary fixing hole 28 formed in the fixed die head 11 and the second temporary fixing hole 29 formed in the movable die head 15, the movable die head 15 can be appropriately aligned in parallel with the fixed die head 11. This allows the die head 10 to be constructed so as to be capable of coating the coating material C with high precision.

[0052] In the above description, the die head 10 has the shim 21, but if omitting the shim 21 does not have any adverse effect, the shim 21 may be omitted. In this case, the discharge port 19 may be formed directly in the fixed die head 11 and / or the fixed die head 11. However, it is preferable to have the shim 21 because the shim 21 can improve abrasion resistance and reduce leakage of the coating material.

[0053] In the above description, the coating substance C is applied to the workpiece W by moving the receiving table 99 on which the workpiece W is placed in the Y direction relative to the coating device 1. However, the coating device 1 may be moved in the Y direction instead of the receiving table 99, or both the coating device 1 and the receiving table 99 may be moved.

[0054] In the above explanation, the coating device and the method for manufacturing an object coated with a coating substance according to an embodiment of the present invention have been explained as examples using Figures 1(A) to 4. However, the configuration, structure, number, arrangement, shape, material, etc. of each part are not limited to the above specific examples, and any suitable selection adopted by a person skilled in the art is also included within the scope of the present invention as long as it includes the gist of the present invention. [Explanation of symbols]

[0055] 1 Coating equipment 10 Die Head 11 Fixed die head 15 Movable die head 17 Bolt groove (fitting structure) 19 Discharge port 21. Shim 25 Cam follower bolt (fitting structure) 28 First temporary fixing hole (temporary fixing mechanism) 29 Second temporary fixing hole (temporary fixing mechanism) 30 Moving device (reciprocating moving device) 31 Motor 33 Slider 50 Holding member 54 Long hole (main fixing mechanism) 55 Linear guide 56 Rail C. Coating Substances CW Coated workpiece (object coated with coating material) W Work (object to be coated)

Claims

1. A die head having a fixed die head and a movable die head movable relative to the fixed die head, wherein an outlet through which a coating material is discharged is formed between the fixed die head and the movable die head, and an opening area of ​​the outlet can be changed by moving the movable die head; a reciprocating device having a motor and a slider that reciprocates linearly by operation of the motor; The movable die head is attached to the slider, and the movable die head is linearly reciprocated by the operation of the reciprocating device. Coating equipment.

2. A pressing member is provided to press the movable die head against the fixed die head. The coating device of claim 1 .

3. The pressing member has a linear guide, The rail of the linear guide is fixed to the movable die head. The coating device according to claim 2 .

4. The fixed die head and the movable die head have fitting structures on their opposing surfaces. The coating device of claim 1 .

5. The fixed die head and the movable die head have a temporary fixing mechanism that temporarily fixes the fixed die head and the movable die head, The fixed die head and the pressing member have a main fixing mechanism for fixing the fixed die head and the pressing member. The coating device according to claim 2 .

6. The die head has a resin shim provided between the fixed die head and the movable die head. The coating device of claim 1 .

7. The shim is formed of at least one material selected from the group consisting of PEEK, polyacetal, ultra-high molecular weight polyethylene, PBT, and PPS. The coating device according to claim 6.

8. A method for producing a coating substance-coated object in which a coating substance discharged by the coating device according to any one of claims 1 to 7 is coated on a coating object, comprising the steps of: placing the object to be coated with the coating substance on a receiving table; applying the coating substance discharged from the coating device to the coating target placed on the receiving table; and removing the object to be coated with the coating substance from the receiving tray. A method for producing an object coated with a coating material.

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