Coating device

Abstract

A coating device (10) according to the present disclosure is provided with: a die (20) having a discharge port extending in a first horizontal direction (D1) for discharging a slurry (90) onto a substrate (80); and a plurality of functional units (31, 32) provided so as to be separated from each other in the first horizontal direction (D1). Each of the functional units (31, 32) can be switched between a fixing function for fixing the die (20) to the base and a deforming function for deforming the die (20) in a second horizontal direction (D2) orthogonal to the first horizontal direction (D1). Some of the functional units (31) are configured so as to exhibit a fixing function, and the remaining functional units (32) are configured so as to exhibit a deformation function. As a result, gap control can be easily performed.

Description

Technical Field

[0001] The present disclosure relates to a coating device. Background Art

[0002] Conventionally, a coating device for coating a coating liquid on a substrate has been known (for example, Patent Document 1). The coating device of Patent Document 1 includes: a stand; a die supported by the stand for coating the coating liquid on the substrate from a front lip; and a threaded member provided between the back surface portion of the die and the stand support portion facing it, and controlling the gap between the front lip and the substrate by changing the distance between the back surface portion of the die and the stand support portion. This gap control is performed to make the thickness of the coating film formed on the substrate uniform.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2004-321915 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] However, in the coating device of Patent Document 1, it is not easy to perform the above-described gap control. This is because, in this coating device, when performing gap control based on one threaded member, the gap at the arrangement portion of other threaded members (particularly, the threaded members adjacent to the one threaded member) is affected via the stand support portion. That is, the actions of the respective threaded members interfere with each other, and thus it is not easy to perform overall gap control over the entire front lip of the die. In such a situation, one of the objects of the present disclosure is to easily perform gap control.

[0008] Means for Solving the Problems

[0009] One aspect of the present disclosure relates to a coating device. The coating device includes: a die head having a discharge port extending in a first horizontal direction for discharging a slurry onto a substrate; and a plurality of functional units provided separately from each other in the first horizontal direction, each of the functional units being capable of switching to perform either a fixing function of fixing the die head to a base or a deforming function of deforming the die head in a second horizontal direction orthogonal to the first horizontal direction, a part of the functional units being configured to perform the fixing function, and the remaining functional units being configured to perform the deforming function.

[0010] Another aspect of the present disclosure relates to a coating device. The coating device includes: a die head having a discharge port extending in a first horizontal direction; at least one fixing unit mounted on the back surface of the die head and fixing the die head to a base; and at least one deforming unit mounted on the die head and disposed separately from the fixing unit in the first horizontal direction, the deforming unit being configured to deform the die head in a second horizontal direction orthogonal to the first horizontal direction.

[0011] Advantageous Effects of the Invention

[0012] According to the present disclosure, gap control can be easily performed.

[0013] The novel features of the present invention will be described in the appended claims. The present invention relates to both structure and content, and should be better understood in combination with other objects and features of the present application and through the following detailed description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view schematically showing the coating device according to Embodiment 1 and a substrate conveyed by a roller.

[0015] Figure 2 is an exploded perspective view of the coating device.

[0016] Figure 3 is a cross-sectional view of the coating device at a cross-section passing through the deformation functional unit.

[0017] Figure 4 is a top view showing the states before and after gap control. Before gap control, the central portion of the coating film of the slurry becomes relatively thick.

[0018] Figure 5 is a top view showing the states before and after gap control. Before gap control, the central portion of the coating film of the slurry becomes relatively thin.

[0019] Figure 6 is a top view showing the states before and after gap control. Before gap control, the coating film of the slurry becomes thicker as it goes from one end to the other end.

[0020] Figure 7 is a perspective view schematically showing the coating device according to Embodiment 2. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Hereinafter, embodiments of the coating device of the present disclosure will be described as examples. However, the present disclosure is not limited to the examples described below. In the following description, specific numerical values and materials are sometimes exemplified, but other numerical values and materials can also be applied as long as the effects of the present disclosure can be obtained.

[0022] A coating device according to an embodiment of the present disclosure (hereinafter also referred to as coating device A) is a device for coating a substrate (for example, a current collector of a battery) with a slurry (for example, an electrode mixture slurry) to form a coating film. The coating device A includes a die head and a plurality of functional units.

[0023] The die head has an ejection port for ejecting the slurry onto the substrate. The ejection port extends in a first horizontal direction. The substrate may be in a strip shape (or a long sheet shape) and may be conveyed near the ejection port along its long side direction. The first horizontal direction may coincide with the width direction of the conveyed substrate. The surface of the substrate conveyed near the ejection port can be continuously coated with the slurry to form a coating film. The die head may be made of an iron-based material (for example, stainless steel).

[0024] The plurality of functional units are arranged separately from each other in the first horizontal direction. That is, the plurality of functional units are arranged independently of each other. Each functional unit can be switched to perform either a fixing function of fixing the die head to the base or a deforming function of deforming the die head in a second horizontal direction orthogonal to the first horizontal direction. A part of the functional units is configured to perform the fixing function. Thus, the die head is fixed to the base. It should be noted that the base may be made of an iron-based material (for example, stainless steel). The remaining functional units are configured to perform the deforming function. Thus, the portion of the die head corresponding to this functional unit deforms in the second horizontal direction, and accordingly, the ejection port also locally deforms in the second horizontal direction. In the portion of the ejection port that deforms in the second horizontal direction, the distance (hereinafter also referred to as the gap) between the substrate and the ejection port changes. That is, by using the functional unit that performs the deforming function (hereinafter also referred to as the deforming functional unit), the gap control of the coating device A can be performed. In addition, since the functional units are arranged independently of each other as described above, the deformation effect based on one deforming functional unit hardly affects the gap at the arranged portion of other functional units (especially other deforming functional units). Therefore, the gap control of the coating device A can be easily performed.

[0025] The die head may have an upper side block and a lower side block that are fixed to each other. The functional unit may be provided on at least one of the upper side block and the lower side block. In other words, the functional unit may be provided only on the upper side block, may be provided only on the lower side block, or may be provided on both the upper side block and the lower side block. In this way, the setting position of the functional unit can be flexibly set as needed.

[0026] The functional unit that performs the deforming function (deforming functional unit) can deform the die head by pressing the back surface of the die head. Here, the back surface of the die head refers to the surface on the side opposite to the ejection port. By pressing the back surface of the die head, the die head can be deformed in a simple manner.

[0027] Each functional unit may have a die base, which is fixed to the base and includes a longitudinal wall portion formed with a first threaded hole and a first long hole. The functional unit that performs the fixing function (hereinafter also referred to as the fixing functional unit) may also have a fixing screw that is screwed into a second threaded hole formed on the back of the die head via the first long hole. The functional unit that performs the deformation function (deformation functional unit) may also have a pressing screw that is screwed into the first threaded hole to press the back of the die head. The die base may also be screwed relative to the base. Alternatively, the longitudinal wall portion of the die base may have a first threaded hole formed in its central portion, and first long holes formed on both sides of the threaded hole. In the fixing functional unit, the fixing screw passes through the first long hole and is screwed into the second threaded hole, thereby allowing the position of each element to be offset in the long side direction of the first long hole. In the deformation functional unit, the pressing screw deforms the die head along the second horizontal direction by pressing the back of the die head.

[0028] The pressing screw may be a screw with very fine threads. Thus, the deformation of the die head relative to the rotation amount of the pressing screw is suppressed to be small, so that the gap control can be performed more accurately. It should be noted that the pressing screw may also be a screw with fine threads.

[0029] The functional unit may also have a plate disposed on the back of the die base and the die head. The pressing screw may press the back of the die head across the plate. Here, if the pressing screw directly presses the back of the die head, it is possible to damage the back of the die head. In contrast, the pressing screw of this structure presses the back of the die head indirectly across the plate, so it is not easy to damage the back of the die head. In addition, when the back of the die head is pressed across the plate, it is pressed over a larger area than when it is pressed by the front end of the pressing screw. Therefore, the deformation of the die head becomes gentle, and the size distribution of the gap in the first horizontal direction can be made gentle. Along with this, the thickness distribution of the coating film formed on the surface of the substrate becomes gentle. This is preferred from the viewpoint that the thickness of the coating film is not easy to form local concave-convex.

[0030] The pressing screw may also press the central portion of the plate in the first horizontal direction. Thus, the force from the pressing screw can be transmitted roughly evenly over the entire contact area between the plate and the back of the die head. The central portion only needs to be an area including the midpoint of the plate in the first horizontal direction.

[0031] The Vickers hardness of the material constituting the plate may be higher than that of the material constituting the die head. For example, when the material constituting the die head is an iron-based material, it is considered that the material constituting the plate is a cemented carbide. Thus, when the plate is pressed with a pressing screw, damage to the plate can be avoided. It should be noted that the Vickers hardness can be measured, for example, by the measuring method specified in JIS 2244-1.

[0032] Alternatively, the plate may have a second long hole formed at a position overlapping the first long hole and having a dimension in the first horizontal direction longer than that of the first long hole. The fixing screw may also be screwed into the second threaded hole via the first long hole and the second long hole. In this structure, even if a positional shift of the plate occurs in the first horizontal direction, the edge portion of the second long hole is less likely to interfere with the fixing screw. Therefore, in the fixing functional unit, it is easy to allow the positional shift of the plate.

[0033] In the first horizontal direction, the size of the ejection port may be 90% or more of the size of the die head. With such a wide ejection port, it is possible to continuously coat the slurry on a wide substrate. However, the wider the width of the ejection port, the more likely it is for a deviation to occur in the gap in its width direction (the first horizontal direction), and the higher the necessity for gap control. In contrast, the coating apparatus A can easily perform gap control as described above, and thus is particularly useful when using a die head having a wide ejection port. It should be noted that the size of the ejection port is preferably 650 mm or more.

[0034] A coating apparatus (hereinafter also referred to as coating apparatus B) according to another embodiment of the present disclosure is an apparatus for coating a slurry (e.g., an electrode mixture slurry) on a substrate (e.g., a current collector of a battery) to form a coating film. The coating apparatus B includes a die head, at least one fixing unit, and at least one deforming unit.

[0035] The die head may be the same as the die head of the coating apparatus A.

[0036] At least one fixing unit is mounted on the back surface of the die head to fix the die head to the base. The fixing unit may be the same as the fixing functional unit of the coating apparatus A.

[0037] At least one deforming unit is mounted on the die head and is provided separately from the fixing unit in the first horizontal direction. That is, the deforming unit is provided independently of the fixing unit. The deforming unit is configured to deform the die head in a second horizontal direction orthogonal to the first horizontal direction. As a result, the portion of the die head corresponding to the deforming unit deforms in the second horizontal direction, and accordingly, the ejection port also locally deforms in the second horizontal direction. Since such a deforming unit is provided separately from the fixing unit, gap control can be easily performed as in the case of the coating apparatus A. The deforming unit may have a rod fixed to the die head. In the case where there are a plurality of deforming units, the respective deforming units may be provided separately from each other. The deforming unit may be disposed at a position outside the fixing unit in the first horizontal direction, or may be disposed at a position inside the fixing unit.

[0038] As described above, according to the present disclosure, by providing each unit independently of each other, interference between them can be suppressed, and gap control can be easily performed.

[0039] Hereinafter, an example of the coating device of the present disclosure will be specifically described with reference to the accompanying drawings. The constituent elements of the coating device in the example described below can be applied to the above-described constituent elements. The constituent elements of the coating device in the example described below can be changed based on the above description. In addition, the matters described below can also be applied to the above-described embodiments. Among the constituent elements of the coating device in the example described below, the constituent elements that are not essential for the coating device of the present disclosure can also be omitted. It should be noted that the figures shown below are schematic and do not accurately reflect the shapes and quantities of the actual components.

[0040] <<Embodiment 1>>

[0041] Embodiment 1 of the present disclosure will be described. The coating device 10 in this embodiment is a device for coating a slurry on a substrate to form a coating film. As Figures 1 to 3 shown, the coating device 10 includes a die head 20 and a plurality of functional units 31, 32. As will be described later, the die head 20 is fixed to the base 50 by a part of the functional units 31. The base 50 has a base body 51 with a fixed position and at least one (two in this example) base plates 52 fixed to the base body 51.

[0042] The die head 20 has an upper side block 21 and a lower side block 22 fixed to each other, and a gasket 23 installed between them. The upper side block 21 and the lower side block 22 each have a front lip 21a, 22a, and a discharge port 24 extending in the first horizontal direction D1 is formed between the front lips 21a, 22a of the two. In the first horizontal direction D1, the size of the discharge port 24 is 90% or more of the size of the die head 20.

[0043] A manifold 25 for supplying the slurry 90 from a slurry supply unit (not shown) and a communication path 26 for communicating the manifold 25 with the discharge port 24 are formed inside the die head 20. The vertical dimension of the communication path 26 is defined by the thickness dimension of the gasket 23. In the die head 20, the slurry 90 supplied from the slurry supply unit accumulates in the manifold 25 and then is ejected from the discharge port 24 to the belt-shaped substrate 80 conveyed by the utilization roller 70 through the communication path 26. Thus, a coating film of the slurry 90 can be continuously formed on the surface of the substrate 80.

[0044] A plurality (four in this example) of functional units 31, 32 are separately arranged on the lower side block 22 in the first horizontal direction D1. Each of the functional units 31, 32 can be switched to perform either a fixing function of fixing the die head 20 to the base 50 or a deforming function of deforming the die head 20 in a second horizontal direction D2 orthogonal to the first horizontal direction D1 (i.e., the facing direction of the die head 20 and the substrate 80). A part of the functional units 31 (two central functional units 31 in the illustrated example) are configured to perform the fixing function. The remaining functional units 32 (two outer functional units 32 in the illustrated example) are configured to perform the deforming function.

[0045] The functional unit 31 that performs the fixing function (hereinafter also referred to as the fixing functional unit 31) includes a die base 33, at least one (one in this example) plate 36, and at least one (two in this example) fixing screw 37.

[0046] The die base 33 has: a longitudinal wall portion 34 formed with at least one (one in this example) first threaded hole 34a and at least one (two in this example) first elongated hole 34b; and a transverse plate portion 35 integrally formed with the longitudinal wall portion 34. The die base 33 may be threadedly fixed to the base plate 52 of the base 50 via a through hole (not shown) formed in the transverse plate portion 35. It should be noted that a first keyway 35a is formed on the lower surface of the transverse plate portion 35. In addition, on the upper surface of the base plate 52, a second keyway 52a is formed at a position opposed to the first keyway 35a (omitted from the illustration in Figure 2 ). By inserting the key 60 into the first keyway 35a and the second keyway 52a, the die base 33 can be positioned relative to the base 50.

[0047] The plate 36 is disposed between the longitudinal wall portion 34 of the die base 33 and the back surface of the die head 20. The Vickers hardness of the material constituting the plate 36 is higher than that of the material constituting the die head 20. The plate 36 has a second elongated hole 36a formed at a position overlapping with the first elongated hole 34b of the die base 33. In the first horizontal direction D1, the size of the second elongated hole 36a is longer than that of the first elongated hole 34b.

[0048] Each fixing screw 37 is screwed through the first elongated hole 34b and the second elongated hole 36a into a second threaded hole 27 formed on the back surface of the die head 20. Thus, the die head 20 can be fixed to the base 50 via the fixing functional unit 31.

[0049] The functional unit 32 that performs the deforming function (hereinafter also referred to as the deforming functional unit 32) includes: a die base 33, at least one (one in this example) plate 36, and at least one (one in this example) pressing screw 38.

[0050] The mold base 33 and the plate 36 are the same as the mold base 33 and the plate 36 that fix the functional unit 31 .

[0051] The pressing screw 38 is composed of a screw with an extremely fine thread. The pressing screw 38 is screwed into the first threaded hole 34a, and presses the back side of the die head 20 by pressing the central part in the first horizontal direction D1 of the plate 36. Specifically, by screwing the pressing screw 38 into the first threaded hole 34a (by moving the pressing screw 38 toward the ejection port 24), the back side of the die head 20 is pressed through the plate 36, thereby the portion of the die head 20 where the deformation function unit 32 is arranged is deformed toward the substrate 80 side, and with this deformation, the gap at this portion (that is, the distance between the substrate 80 and the ejection port 24) becomes smaller. On the other hand, by moving the pressing screw 38 in the opposite direction, the deformation of the portion of the die head 20 where the deformation function unit 32 is arranged can be reduced before the pressing force by the pressing screw 38 is released, thereby increasing the gap at this portion.

[0052] Next, refer to Figures 4 to 6 An example of a method for making the thickness of the coating film of the slurry 90 uniform using the coating device 10 of the present embodiment will be described when the thickness of the coating film is non-uniform. The thickness of the coating film can be measured by a thickness measuring device (not shown).

[0053] Figure 4 2 is a diagram showing the state before and after the gap is controlled by the deformation of the die head 20. Before the gap is controlled, the central part of the coating film of the slurry 90 becomes relatively thick. In this case, the two functional units 32 on the central side of the four functional units 31 and 32 are switched to the deforming functional units 32, and the two functional units 31 on the outer side are switched to the fixed functional units 31. In addition, by pressing the back side of the die head 20 with the pressing screws 38 of each deforming functional unit 32, the shape of the front lip 21a and 22a is made straight. As a result, the gap is uniformed as a whole, and the thickness of the coating film of the slurry 90 can also be uniformed.

[0054] Figure 5 2 is a diagram showing the state before and after the gap is controlled by deformation of the die head 20. Before the gap is controlled, the central part of the coating film of the slurry 90 is relatively thin. In this case, the two outer functional units 32 of the four functional units 31 and 32 are switched to the deforming functional units 32, and the two functional units 31 on the central side are switched to the fixed functional units 31. In addition, by pressing the back of the die head 20 with the pressing screws 38 of each deforming functional unit 32, the shape of the front lip 21a and 22a is made straight. As a result, the gap is uniformed as a whole, and the thickness of the coating film of the slurry 90 can also be uniformed.

[0055] Figure 6FIG. 0 is a diagram showing the states before and after controlling the gap by deforming the die 20. Before the gap control, the coating film of the slurry 90 becomes thicker as it goes from one end ( Figure 6 the left end in FIG. 0) toward the other end. In this case, three of the four functional units 32 on the other end side among the four functional units 31 and 32 are switched to the deformation functional units 32, and one functional unit 31 on the one end side is switched to the fixed functional unit 31. Then, by pressing the back surface of the die 20 with the pressing screws 38 of the respective deformation functional units 32, the shapes of the front end lips 21a and 22a are made straight. As a result, the gap is made uniform as a whole, and the thickness of the coating film of the slurry 90 can also be made uniform.

[0056] <<Embodiment 2>>

[0057] Embodiment 2 of the present disclosure will be described. The coating apparatus 10 of the present embodiment is different from the above-described Embodiment 1 in that it includes a fixing unit 41 and a deforming unit 42. Hereinafter, the points different from the above-described Embodiment 1 will be mainly described.

[0058] As Figure 7 shown, the coating apparatus 10 of the present embodiment includes at least one (two in this example) fixing unit 41 and at least one (two in this example) deforming unit 42.

[0059] The fixing unit 41 has the same structure as the fixing functional unit 31 of the above-described Embodiment 1. The fixing unit 41 is attached to the back surface of the die 20 by fixing screws 37 to fix the die 20 to the base 50. It should be noted that Figure 7 FIG. 18 shows only the base plate 52 of the base 50.

[0060] The deforming unit 42 is provided separately from the fixing unit 41 in the first horizontal direction D1. The deforming unit 42 of the present embodiment is disposed at a position outside the fixing unit 41, but is not limited thereto. The deforming unit 42 has a rod 42a fixed to the upper side block 21 of the die 20. The rod 42a can be moved in the second horizontal direction D2 by a moving unit (not shown). By moving the rod 42a in the second horizontal direction D2, the portion of the die 20 where the rod 42a is disposed is deformed in the second horizontal direction D2. As a result, the desired gap control can be easily achieved. It should be noted that the rod 42a may be fixed to any part of the upper side block 21 or the lower side block 22.

[0061] <<Supplementary Note>>

[0062] Through the description of the above embodiments, the following technology is disclosed.

[0063] <<Technology 1>>

[0064] A coating apparatus, comprising:

[0065] A die head having a discharge port extending in a first horizontal direction for discharging a slurry onto a substrate; and

[0066] A plurality of functional units arranged separately from each other in the first horizontal direction,

[0067] each of the functional units being capable of switching to perform either a fixing function of fixing the die head to a base or a deforming function of deforming the die head in a second horizontal direction orthogonal to the first horizontal direction,

[0068] a part of the functional units being configured to perform the fixing function,

[0069] and the remaining functional units being configured to perform the deforming function.

[0070] (Technique 2)

[0071] The coating apparatus according to Technique 1, wherein

[0072] the die head has an upper side block and a lower side block that are fixed to each other,

[0073] and the functional units are provided on at least one of the upper side block and the lower side block.

[0074] (Technique 3)

[0075] The coating apparatus according to Technique 1 or 2, wherein

[0076] the functional units that perform the deforming function deform the die head by pressing the back surface of the die head.

[0077] (Technique 4)

[0078] The coating apparatus according to any one of Techniques 1 to 3, wherein

[0079] each of the functional units has a die holder fixed to the base and including a longitudinal wall portion formed with a first threaded hole and a first elongated hole,

[0080] the functional units that perform the fixing function further have fixing screws that are screwed through the first elongated hole into second threaded holes formed in the back surface of the die head,

[0081] and the functional units that perform the deforming function further have pressing screws that are screwed into the first threaded hole to press the back surface of the die head.

[0082] (Technique 5)

[0083] The coating apparatus according to Technique 4, wherein

[0084] The pressing screw is a screw with very fine threads.

[0085] (Technique 6)

[0086] The coating device according to technology 4 or 5, wherein:

[0087] The functional unit also has a plate disposed between the die base and the back side of the die head,

[0088] The pressing screw presses the back surface of the die head via the plate.

[0089] (Technique 7)

[0090] The coating device according to technique 6, wherein:

[0091] The pressing screw presses a central portion of the plate in the first horizontal direction.

[0092] (Technique 8)

[0093] The coating device according to technology 6 or 7, wherein:

[0094] The plate is made of a material having a higher Vickers hardness than the die.

[0095] (Technique 9)

[0096] A coating device according to any one of techniques 6 to 8, wherein:

[0097] The plate has a second long hole, the second long hole is formed at a position overlapping with the first long hole, and the dimension of the second long hole in the first horizontal direction is longer than that of the first long hole,

[0098] The fixing screw is screwed into the second threaded hole through the first long hole and the second long hole.

[0099] (Technology 10)

[0100] A coating device according to any one of techniques 1 to 9, wherein:

[0101] In the first horizontal direction, the size of the ejection port is greater than or equal to 90% of the size of the die head.

[0102] (Technology 11)

[0103] A coating device, comprising:

[0104] a die head having a nozzle extending in a first horizontal direction;

[0105] at least one fixing unit, which is installed on the back side of the die head and fixes the die head to a base; and

[0106] At least one deformation unit, which is installed on the die head and is disposed separately from the fixing unit in the first horizontal direction.

[0107] The deformation unit is configured to deform the die head in a second horizontal direction orthogonal to the first horizontal direction.

[0108] The present invention has been described with respect to the current preferred embodiments, but such disclosure should not be construed in a limiting manner. Various modifications and changes will be apparent to those skilled in the art in the technical field to which the present invention pertains from reading the above disclosure. Therefore, the appended technical solutions should be construed as including all modifications and changes without departing from the true spirit and scope of the present invention.

[0109] Industrial applicability

[0110] The present disclosure can be used in coating devices.

[0111] Explanation of reference numerals:

[0112] 10: Coating device

[0113] 20: Die head

[0114] 21: Upper side block

[0115] 21a: Front lip

[0116] 22: Lower side block

[0117] 22a: Front lip

[0118] 23: Spacer

[0119] 24: Spray outlet

[0120] 25: Manifold

[0121] 26: Communication path

[0122] 27: Second threaded hole

[0123] 31: Fixing functional unit (functional unit)

[0124] 32: Deformation functional unit (functional unit)

[0125] 33: Die base

[0126] 34: Longitudinal wall portion

[0127] 34a: First threaded hole

[0128] 34b: First elongated hole

[0129] 35: Transverse plate portion

[0130] 35a: First keyway

[0131] 36: Plate

[0132] 36a: Second long hole

[0133] 37: Fixing screw

[0134] 38: Pressing screw

[0135] 41: Fixing unit

[0136] 42: Deformation unit

[0137] 42a: Rod

[0138] 50: Base

[0139] 51: Base body

[0140] 52: Base plate

[0141] 52a: Second keyway

[0142] 60: Key

[0143] 70: Roller

[0144] 80: Base material

[0145] 90: Slurry

[0146] D1: First horizontal direction

[0147] D2: Second horizontal direction.

Claims

1. A coating device comprising: a die head having a nozzle extending in a first horizontal direction for spraying the slurry toward the substrate; and a plurality of functional units, which are arranged separately from each other in the first horizontal direction, Each of the functional units can be switched to play any one of a fixing function of fixing the die head to the base and a deformation function of deforming the die head along a second horizontal direction orthogonal to the first horizontal direction. A portion of the functional units is configured to perform the fixed function. The remaining functional units are configured to perform the deformation function.

2. The coating device according to claim 1, wherein: The die head has an upper side block and a lower side block fixed to each other. The functional unit is disposed in at least one of the upper block and the lower block.

3. The coating device according to claim 1 or 2, wherein: The functional unit that performs the deformation function deforms the die head by pressing the back surface of the die head.

4. The coating device according to claim 1 or 2, wherein: Each of the functional units has a mold base, which is fixed to the base and includes a longitudinal wall portion having a first threaded hole and a first long hole. The functional unit that performs the fixing function further includes a fixing screw, and the fixing screw is screwed into a second threaded hole formed on the back side of the die head through the first long hole. The functional unit that performs the deformation function further includes a pressing screw that is screwed into the first threaded hole to press the back surface of the die head.

5. The coating device according to claim 4, wherein: The pressing screw is a screw with very fine threads.

6. The coating device according to claim 4, wherein: The functional unit also has a plate disposed between the die base and the back side of the die head, The pressing screw presses the back surface of the die head via the plate.

7. The coating device according to claim 6, wherein: The pressing screw presses a central portion of the plate in the first horizontal direction.

8. The coating device according to claim 6, wherein: The plate is made of a material having a higher Vickers hardness than the die.

9. The coating device according to claim 6, wherein: The plate has a second long hole, the second long hole is formed at a position overlapping with the first long hole, and the dimension of the second long hole in the first horizontal direction is longer than that of the first long hole, The fixing screw is screwed into the second threaded hole through the first long hole and the second long hole.

10. The coating device according to claim 1 or 2, wherein: In the first horizontal direction, the size of the ejection port is greater than or equal to 90% of the size of the die head.

11. A coating device comprising: a die head having a nozzle extending in a first horizontal direction; at least one fixing unit, which is installed on the back side of the die head and fixes the die head to a base; and at least one deformation unit, which is mounted on the die head and is disposed separately from the fixing unit in the first horizontal direction, The deformation unit is configured to deform the die head along a second horizontal direction orthogonal to the first horizontal direction.

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