Coating assembly and coating device

Abstract

The utility model discloses a coating assembly and a coating device. The coating assembly comprises a coating die head and an adjusting assembly; the coating die head comprises an upper die head and a lower die head; a coating slit is formed between the upper die head and the lower die head; the adjusting assembly is arranged on the side surface of the coating die head; and the adjusting assembly is configured to drive the upper die head and / or the lower die head to translate so as to adjust the width of the coating slit. In the process of adjusting the width of the coating slit, the coating die head does not need to be disassembled, so that the operation complexity is reduced, and the adjustment is more convenient; and stepless adjustment can be achieved within a certain limit, the requirement for various thicknesses of a coating film layer can be met, and the applicability of the coating film layer of the coating assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of coating technology, and in particular to a coating component and a coating device. Background Art

[0002] A commonly used method for industrial large-area liquid phase continuous film formation is the slot coating method.

[0003] The coating die of the slot coating equipment is mostly composed of an upper die, a lower die and a gasket. The function of the gasket is to form a stable liquid outlet gap between the upper die and the lower die, and the width of the gap is the thickness of the gasket. When the gap thickness is adjusted by the gasket, the die and gasket need to be removed and replaced with gaskets of different thicknesses for adjustment, which is a complicated process. Utility Model Content

[0004] The present application provides a coating component and a coating device to reduce the complexity of the process of adjusting the gap width.

[0005] In order to solve the above technical problems, the first aspect of the present application provides a coating component, including a coating die and an adjustment component; the coating die includes an upper die and a lower die; a coating slit is formed between the upper die and the lower die; the adjustment component is arranged on the side of the coating die; the adjustment component is configured to drive the upper die and / or the lower die to translate and adjust the width of the coating slit.

[0006] The coating assembly provided by the present application does not need to be provided with a gasket, which saves the installation and debugging time of the gasket, saves the manpower maintenance cost, and also saves the cost of the gasket matched with the coating die head, which is conducive to reducing costs. The coating assembly provided by the present application, by adjusting the assembly, causes the upper die head and / or the lower die head to translate, realizes the adjustment of the spacing between the upper die head and the lower die head, and then realizes the adjustment of the width of the coating slit; during the width adjustment process of the coating slit, there is no need to disassemble the coating die head, which reduces the complexity of the operation and makes the adjustment more convenient. By adjusting the spacing between the upper die head and the lower die head to achieve the adjustment of the width of the coating slit, stepless adjustment can be achieved within a certain limit, which can meet the requirements of various thicknesses of the coating film layer, and improve the applicability of the coating film layer of the coating assembly.

[0007] In one embodiment, the adjustment assembly includes a guide rail and a slider, the slider is slidably connected to the guide rail, the slider is connected to the upper die head and / or the lower die head, and the guide rail extends linearly along the width direction of the coating slit. By setting the extension direction of the guide rail to be parallel to the width direction of the coating slit, the upper die head and / or the lower die head can move along the width direction of the coating slit, thereby achieving translation of the upper die head and / or the lower die head, and achieving adjustment of the width of the coating slit.

[0008] In one embodiment, the adjustment component also includes a driving member, which is connected to the lower die head and / or the upper die head, and is configured to drive the lower die head and / or the upper die head to translate, thereby automatically controlling the upper die head and / or the lower die head to translate, which can save manual disassembly and debugging costs and time costs, and is beneficial to improving the accuracy of width adjustment of the coating slit and increasing production efficiency.

[0009] In one embodiment, the adjustment component further includes a reducer; the drive member is connected to the lower die head through the reducer, and / or the drive member is connected to the upper die head through the reducer. By arranging a reducer on the transmission path of the drive member, the rotation speed is reduced and the torque is increased, the translation distance requirement of the upper die head or the lower die head is met, the adjustment accuracy is improved, and the width of the coating slit is infinitely adjusted, which can meet the requirements of various thicknesses of the coating film layer and improve the applicability of the coating component for coating the film layer.

[0010] In one embodiment, the adjustment assembly further includes a screw, which is connected to the driving member; the lower die head includes a main body and a protrusion disposed on the side of the main body, the side of the main body is flush with the side of the upper die head; the protrusion is provided with a through hole, the axis of the through hole is parallel to the width direction of the coating slit; the screw is disposed in the through hole. The rotary motion of the driving member is converted into the translational linear motion required by the upper die head or the lower die head through the screw.

[0011] In one embodiment, the driving member includes a servo motor, which can achieve higher positioning accuracy and repeatability.

[0012] In one embodiment, the servo motor is a linear motor with a positioning accuracy and a repeat positioning accuracy both less than or equal to 2 μm, achieving micron-level positioning accuracy and repeat positioning accuracy, which is conducive to realizing stepless adjustment of the width of the coating slit.

[0013] In one embodiment, the adjustment component further includes a connecting block; the connecting block is arranged on the side of the upper die head; the guide rail is fixed to the connecting block; the coating component further includes a limit block, the limit block is arranged on the top surface of the coating die head, and part of the limit block extends out of the side of the coating die head; the connecting block abuts against the part of the limit block extending out of the coating die head. The above design is performed by setting the limit block and the positional relationship between the connecting block and the limit block, so as to maintain the parallelism between the adjustment component and the upper die head and ensure that the movement of the upper die head and / or the lower die head is translational.

[0014] In one embodiment, the surface where the limit block contacts the coating die is defined as a first surface, and the surface where the limit block contacts the connecting block is defined as a second surface, and the first surface and the second surface belong to the same plane, maintaining the parallelism between the adjustment component and the upper die, ensuring that the movement of the upper die and / or the lower die is a translation.

[0015] In one embodiment, the lower die head includes a main body and a protrusion disposed on the side of the main body, and the side of the main body is flush with the side of the upper die head; the adjustment assembly also includes a connecting block, and the connecting block is disposed on the side of the upper die head; the connecting block includes a first sub-block, a second sub-block, and a third sub-block connected in sequence, and the first sub-block and the third sub-block are respectively disposed on opposite sides of the protrusion, the protrusion is spaced from the first sub-block, the protrusion abuts against the third sub-block, and the first sub-block is located on the side of the third sub-block away from the coating slit. By designing the positional relationship and the connection relationship between the upper die head, the connecting block, and the protrusion, the relative position between the upper die head and the lower die head is fixed.

[0016] In one embodiment, the coating assembly further includes a sealing assembly, which covers the gap on the side of the coating die to seal the side of the coating die, prevent the coating liquid from leaking from the side of the coating die, and maintain a good coating effect of the coating assembly.

[0017] In one embodiment, the sealing assembly includes a sealing ring and a sealing plate, wherein the sealing ring is arranged around the gap between the upper die head and the lower die head, and the sealing plate covers the sealing ring. The sealing ring has a certain deformation ability, and under the tight pressure of the sealing plate, the sealing ring shrinks as the upper die head and / or the lower die head translates, so as to keep the gap on the side between the upper die head and the lower die head within the space defined by the sealing ring, thereby sealing the gap on the side of the coating die head.

[0018] In one embodiment, the upper die head and the lower die head cooperate to form a liquid collecting chamber; along the flow path of the fluid, the liquid collecting chamber is located upstream of the coating slit; the maximum width of the liquid collecting chamber is greater than the width of the coating slit; optionally, the shape of the liquid collecting chamber is a smooth curve; optionally, the liquid collecting chamber is in a teardrop shape, so that the liquid flows out of the coating slit smoothly, making the liquid coating more uniform.

[0019] In one embodiment, the coating assembly further includes a width measuring instrument, which is disposed on one side of the coating die head; the width measuring instrument is configured to detect the width of the coating slit formed by the cooperation of the upper die head and the lower die head. By providing the width measuring instrument, the width of the coating slit can be automatically detected and detected in real time, and the result is fed back to the control component of the coating device. The control component controls the translation direction and translation amount of the upper die head and / or the lower die head driven by the adjustment component according to the detection result of the width measuring instrument, so that the width of the coating slit reaches the set value, realizing real-time monitoring and feedback control, saving the manpower and time cost of repeated disassembly and assembly, and reducing the error of repeated assembly.

[0020] In one embodiment, one adjusting component is respectively provided on opposite sides of the coating die head; and / or one width measuring instrument is respectively provided on opposite sides of the coating die head, so as to realize precise control of the adjusting components on opposite sides of the coating die head, and the width of the coating slits at opposite ends of the coating die head can be leveled by the measurement values ​​fed back from opposite sides of the coating die head, so as to keep the width of the coating slits at various locations along the length direction of the coating die head the same, and the thickness of the film layer coated by the coating component is uniform, so as to realize better coating effect.

[0021] In one embodiment, the upper die head and the lower die head cooperate to form a liquid collecting cavity; the orthographic projection of the detection light emitted by the width measuring instrument on the coating die head is misaligned with the liquid collecting cavity. By designing the setting position of the width measuring instrument as above, the accuracy of the detection result of the width measuring instrument is maintained.

[0022] In one embodiment, the coating component also includes a control component, and the width measuring instrument and the adjustment component are respectively connected to the control component; the control component is configured to receive the detection result of the width measuring instrument, and control the adjustment component to drive the translation direction and translation amount of the upper die head and / or the lower die head according to the detection result of the width measuring instrument, thereby realizing automatic adjustment of the width of the coating slit and reducing labor costs and time costs.

[0023] In one embodiment, the lower die head is provided with a liquid inlet, and the liquid collecting chamber is located on the fluid flow path between the liquid inlet and the coating slit. The coating liquid enters from the liquid inlet, flows out from the coating slit through the gap between the upper die head and the lower die head, and the liquid is coated on the surface of the workpiece, and the thickness of the coated film layer is uniform, achieving a better coating effect.

[0024] In order to solve the above technical problems, the second aspect of the present application provides a coating device, including any coating component described above, which has at least the same technical effect as the coating component.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 is a schematic diagram of the structure of a coating assembly provided in an embodiment of the present application;

[0028] Figure 2 yes Figure 1 The schematic diagram of the structure of the upper die head and the lower die head of the coating assembly shown;

[0029] Figure 3 yes Figure 1 A simplified structural diagram of the coordination among the guide rail, slider, upper die head and lower die head of the coating assembly shown;

[0030] Figure 4 yes Figure 2 A schematic diagram of the side view of the structure shown.

[0031] In the attached figure:

[0032] Coating die 1, coating slit 10, upper die 11, first subsection 111, second subsection 112, lower die 12, main body 121, protrusion 122, through hole 1221, liquid inlet 123, liquid collecting chamber 13;

[0033] Adjustment assembly 2, guide rail 21, slider 22, driving member 23, reducer 24, screw rod 25, connecting block 26, first sub-block 261, second sub-block 262, third sub-block 263, connecting plate 27;

[0034] Limit block 3, sealing assembly 4, sealing ring 41, sealing plate 42, width measuring instrument 5. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and effect of the present application clearer and more specific, the following will describe the embodiments of the technical solution of the present application in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two (including two groups), and "multiple pieces" refers to more than two (including two pieces), unless otherwise clearly and specifically defined.

[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0040] Amounts, ratios and other numerical values ​​are presented herein in a range format. It should be understood that such a range format is for convenience and brevity and should be flexibly interpreted to include not only the values ​​explicitly specified as range limits, but also all individual values ​​or sub-ranges encompassed within the range, as if each value and sub-range were explicitly specified.

[0041] If there is no special explanation, all steps of the present application can be performed sequentially, randomly, or in parallel, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially, or may be steps (a) and (b) performed simultaneously in parallel. For example, the method may also include step (c), indicating that step (c) may be added to the method in any order, for example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0042] A common method for coating each film layer in a solar cell is the slit coating method. For example, the method for forming a perovskite wet film is to place a perovskite precursor solution in a liquid reservoir, and through a control component, uniformly squeeze it from a slit coating head onto a substrate according to certain process parameters to form a continuous and uniform perovskite wet film.

[0043] The coating die of the existing slit coating equipment mostly uses an upper die, a lower die and a gasket assembly. The function of the gasket is to form a stable liquid outlet gap between the upper die and the lower die, and the width of the gap is the thickness of the gasket. When the gap thickness is adjusted by the gasket, the die and the gasket need to be removed and replaced with gaskets of different thicknesses for adjustment, which is a complicated process.

[0044] In view of this, the present application provides a coating assembly and a coating device to reduce the complexity of the process of adjusting the slit width. It should be noted that the coating assembly and the coating device provided by the present application are not only applicable to the film coating of solar cells, but also applicable to coating using the slit coating method.

[0045] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of the coating assembly provided in the embodiment of the present application, Figure 2 yes Figure 1 The schematic diagram of the structure of the upper die head and the lower die head of the coating component is shown.

[0046] The coating assembly includes a coating die 1 and an adjustment assembly 2. The coating die 1 includes an upper die 11 and a lower die 12, and a coating slit 10 is formed on one side between the upper die 11 and the lower die 12. The adjustment assembly 2 is arranged on the side of the coating die 1. The adjustment assembly 2 is configured to drive the upper die 11 and / or the lower die 12 to translate along the arrangement direction of the upper die 11 and the lower die 12 to adjust the width of the coating slit 10.

[0047] Among them, the coating die 1 is a structural member for forming the coating slit 10. The adjustment component 2 is a structural member for adjusting the width of the coating slit 10. Specifically, since the coating slit 10 is formed by one side between the upper die 11 and the lower die 12, the width of the coating slit 10 is related to the distance between the upper die 11 and the lower die 12, and the adjustment component 2 is configured to drive the upper die 11 and / or the lower die 12 to translate, adjust the distance between the upper die 11 and the lower die 12, and then adjust the width of the coating slit 10. It should be noted that the adjustment component 2 causes the upper die 11 and / or the lower die 12 to translate, thereby adjusting the width of the coating slit 10, and the width of the coating slit 10 is equal to the distance between the upper die 11 and the lower die 12.

[0048] Compared with the prior art that adjusts the thickness of the coating slit by replacing gaskets of different thicknesses, it is necessary to disassemble the die head and the gasket, and the thickness of the gasket has only a few fixed values, and the adjustment of the thickness of the coating slit also has only a few fixed values ​​to choose from. The coating assembly provided in the present application does not need to be provided with a gasket, which saves the installation and debugging time of the gasket, saves the manpower maintenance cost, and also saves the cost of the gasket matched with the coating die head 1, which is conducive to reducing costs. The coating assembly provided in the present application, through the adjustment component 2, causes the upper die head 11 and / or the lower die head 12 to translate, thereby adjusting the distance between the upper die head 11 and the lower die head 12, and then adjusting the width of the coating slit 10; during the width adjustment process of the coating slit 10, there is no need to disassemble the coating die head, which reduces the complexity of operation and makes the adjustment more convenient. The width of the coating slit 10 is adjusted by adjusting the distance between the upper die 11 and the lower die 12, and infinite adjustment can be achieved within a certain limit to meet the requirements of various thicknesses of the coating film layer, thereby improving the applicability of the coating assembly coating film layer.

[0049] It is understandable that the adjustment component 2 can drive the upper die head 11 to translate, or can drive the lower die head 12 to translate, or can drive the upper die head 11 and the lower die head 12 to translate at the same time, so as to adjust the distance between the upper die head 11 and the lower die head 12.

[0050] See also Figure 3 , Figure 3 yes Figure 1 The schematic diagram of the simple structure of the cooperation between the guide rail, slider, upper die head and lower die head of the coating assembly shown.

[0051] The adjustment component 2 includes a guide rail 21 and a slider 22. The slider 22 is slidably connected to the guide rail 21; that is, the slider 22 can slide back and forth along the guide rail 21. The slider 22 is connected to the lower die 12 and / or the upper die 11; the guide rail 21 extends linearly along the arrangement direction of the upper die 11 and the lower die 12; that is, the extension direction of the guide rail 21 is parallel to the arrangement direction of the upper die 11 and the lower die 12. It should be noted that the arrangement direction of the upper die 11 and the lower die 12 refers to the direction parallel to the width direction of the coating slit 10. The arrangement direction of the upper die 11 and the lower die 12 in the following content has the same meaning and will not be repeated. Among them, the guide rail 21 refers to a structural member that guides the sliding direction of the slider 22. The slider 22 refers to a structural member that slides along the extension direction of the guide rail 21.

[0052] In one embodiment, the slider 22 is connected to the lower die head 12 and / or the upper die head 11 by bolt connection, adhesive connection, welding, etc. to achieve the connection between the slider 22 and the lower die head 12 and / or the upper die head 11.

[0053] In one embodiment, the guide rail 21 is fixed to other structural components of a coating device having a coating assembly provided in an embodiment of the present application.

[0054] In one embodiment, the guide rail 21 is fixed to the ground via another structural member.

[0055] In one embodiment, the slider 22 is connected to the lower die 12, and the guide rail 21 is connected to the upper die 11, so as to save the space occupied by the coating assembly. By setting the extension direction of the guide rail 21 to be parallel to the width direction of the coating slit 10, the upper die 11 connected to the guide rail 21 and / or the lower die 12 connected to the slider 22 can move along the width direction of the coating slit 10, so as to achieve the translation of the upper die 11 and / or the lower die 12, and to achieve the adjustment of the width of the coating slit 10. Specifically, the upper die head 11 may move toward or away from the lower die head 12, and the guide rail 21 connected to the upper die head 11 slides on the slider 22, and the slider 22 guides the movement of the guide rail 21, and the guide rail 21 moves in a straight line; the lower die head 12 may move toward or away from the upper die head 11, and the slider 22 connected to the lower die head 12 slides on the guide rail 21, and the guide rail 21 guides the movement of the slider 22, and the slider 22 moves in a straight line; the upper die head 11 and the lower die head 12 may move toward or away from each other at the same time, and relative sliding occurs between the guide rail 21 and the slider 22, and the slider 22 guides the movement of the guide rail 21, and the guide rail 21 guides the movement of the slider 22, and the slider 22 and the guide rail 21 both move in a straight line. Optionally, the guide rail 21 and the upper die head 11 may be connected by bolts, adhesives, welding, etc. to achieve the connection between the guide rail 21 and the upper die head 11.

[0056] In one embodiment, the guide rail 21 may be connected to the lower die 12, and the slider 22 may be connected to the upper die 11. By setting the extension direction of the guide rail 21 to be parallel to the width direction of the coating slit 10, the lower die 12 connected to the guide rail 21 and / or the upper die 11 connected to the slider 22 may be moved along the width direction of the coating slit 10, so as to achieve the translation of the upper die 11 and / or the lower die 12, and to achieve the adjustment of the width of the coating slit. For the specific setting method, please refer to the above-mentioned embodiment "the slider 22 is connected to the lower die 12, and the guide rail 21 is connected to the upper die 11", and the position of the slider 22 and the guide rail 21 can be swapped. Optionally, the guide rail 21 and the lower die 12 are connected by bolts, adhesives, welding, etc. to achieve the connection between the guide rail 21 and the lower die 12.

[0057] In one embodiment, the slider 22 includes at least a first slider and a second slider, the first slider is connected to the upper die 11, and the second slider is connected to the lower die 12. By setting the extension direction of the guide rail 21 to be parallel to the width direction of the coating slit 10, the upper die 11 connected to the first slider and / or the lower die 12 connected to the second slider can move along the width direction of the coating slit 10, so as to adjust the width of the coating slit 10, wherein the guide rail 21 can be set at any position that does not affect the movement of the upper die 11 and the lower die 12. Specifically, the upper die 11 can move in a direction close to or away from the lower die 12, or the lower die 12 can move in a direction close to or away from the upper die 11, or the upper die 11 and the lower die 12 can move in a direction close to each other or move in a direction away from each other at the same time.

[0058] It should be noted that the adjustment component 2 is not limited to the guide rail 21 and the slider 22 , and it only needs to be able to drive the upper die head 11 and / or the lower die head 12 to move in translation.

[0059] In one embodiment, the upper die 11 and / or the lower die 12 are translated manually.

[0060] In one embodiment, the upper die head 11 and / or the lower die head 12 are automatically controlled to move horizontally, which can save the cost and time of manual disassembly and debugging, and is conducive to improving the accuracy of adjusting the width of the coating slit 10 and increasing production efficiency. Figure 1 As shown, the adjustment assembly 2 further includes a driving member 23, which is connected to the upper die head 11 and / or the lower die head 12, and is configured to drive the upper die head 11 and / or the lower die head 12 to translate along the arrangement direction of the upper die head 11 and the lower die head 12, so as to automatically control the translation of the upper die head 11 and / or the lower die head 12. The driving member 23 refers to a structural member that drives the upper die head 11 and / or the lower die head 12 to automatically translate.

[0061] Optionally, the driving member 23 is connected to the upper die head 11, and the driving member 23 drives the upper die head 11 to translate along the arrangement direction of the upper die head 11 and the lower die head 12, so as to adjust the width of the coating slit 10. Optionally, the driving member 23 is connected to the lower die head 12, and the driving member 23 drives the lower die head 12 to translate along the arrangement direction of the upper die head 11 and the lower die head 12, so as to adjust the width of the coating slit 10. Optionally, one driving member 23 is connected to the upper die head 11, and one driving member 23 is connected to the lower die head 12, and the driving member 23 connected to the upper die head 11 and the driving member 23 connected to the lower die head 12 simultaneously drive the upper die head 11 and the lower die head 12 to translate in a direction close to each other or away from each other, so as to adjust the width of the coating slit 10.

[0062] Optionally, the drive member 23 includes a servo motor. A servo motor refers to a structural member that can convert a voltage signal into a torque and a speed to drive a control object. The rotor speed of the servo motor is controlled by an input signal and can respond quickly. In automatic control, it is used as an actuator and has the characteristics of a small electromechanical time constant and high linearity. It can convert the received electrical signal into an angular displacement or angular velocity output on the motor shaft. The drive member 23 is set as a servo motor, which can achieve high positioning accuracy and repeatability. Among them, the positioning accuracy refers to the degree of closeness between the actual value of the width of the coating slit 10 adjusted by the drive member 23 and the target value of the width of the coating slit 10. Repeatability refers to the degree of overlap of multiple positioning. Further optionally, the drive member 23 includes a precision servo motor, specifically a linear motor with a positioning accuracy and repeatability of less than or equal to 2μm, which can achieve micron-level positioning accuracy and repeatability, which is conducive to the stepless adjustment of the width of the coating slit 10.

[0063] In one embodiment, if Figure 1 As shown, the adjustment component 2 also includes a driving member 23 and a reducer 24; the driving member 23 is connected to the lower die head 12 through the reducer 24, and / or the driving member 23 is connected to the upper die head 11 through the reducer 24. The reducer 24 refers to an independent closed transmission device between the driving member 23 and the upper die head 11 or the lower die head 12, which is used to reduce the rotation speed and increase the torque. By arranging the reducer 24 on the transmission path of the driving member 23, the rotation speed and the torque are reduced, the translation distance requirements of the upper die head 11 or the lower die head 12 are met, and it is beneficial to improve the adjustment accuracy, and it is beneficial to realize the stepless adjustment of the width of the coating slit 10, which can meet the requirements of various thicknesses of the coating film layer, and improve the applicability of the coating assembly coating film layer. It should be noted that the reducer 24 is an optional structure, and whether to set the reducer 24 is selected according to the needs.

[0064] Optionally, the driving member 23 is connected to the upper die head 11 through a reducer 24, and the driving member 23 drives the upper die head 11 to translate along the arrangement direction of the upper die head 11 and the lower die head 12, so as to adjust the width of the coating slit 10. Optionally, the driving member 23 is connected to the lower die head 12 through a reducer 24, and the driving member 23 drives the lower die head 12 to translate along the arrangement direction of the upper die head 11 and the lower die head 12, so as to adjust the width of the coating slit 10. Optionally, one driving member 23 is connected to the upper die head 11 through a reducer 24, and one driving member 23 is connected to the lower die head 12 through a reducer 24, and the two driving members 23 translate by driving the upper die head 11 and the lower die head 12 to move toward or away from each other at the same time, so as to adjust the width of the coating slit 10.

[0065] In one embodiment, if Figure 1 As shown, the adjustment component 2 also includes a screw 25. One end of the screw 25 is connected to the driving member 23, and the other end of the screw is connected to the upper die head 11 or the lower die head 12. The screw 25 refers to a structural member that converts the rotational motion of the driving member 23 into a linear motion required by the upper die head 11 or the lower die head 12 for translation. It should be noted that when the adjustment component 2 includes a reducer 24, the driving member 23 and the reducer 24 are connected to the upper die head 11 or the lower die head 12 through the screw 25.

[0066] Taking the connection between the driving member 23 and the lower die head 12 as an example, the specific connection method between the screw rod connected to the driving member 23 and the lower die head 12 is described in detail.

[0067] like Figure 2 As shown, the lower die head 12 includes a body portion 121 and a protrusion 122 provided on the side of the body portion 121. The side of the body portion 121 is flush with the side of the upper die head 11, and the protrusion 122 protrudes from the side of the upper die head 11. Optionally, the body portion 121 and the protrusion 122 are integrally formed. Optionally, the body portion 121 and the protrusion 122 are fixedly connected by adhesive, welding or bolts. Optionally, the slider 22 is fixed to the surface of the protrusion 122 close to the coating slit 10.

[0068] The protrusion 122 is provided with a through hole 1221. The through hole 1221 extends from a first surface of the protrusion 122 to a second surface of the protrusion 122 opposite to the first surface, and the through hole 1221 penetrates the protrusion 122. The axis of the through hole 1221 is parallel to the arrangement direction of the upper die head 11 and the lower die head 12. Figure 2 Combination Figure 1 , the screw rod 25 is arranged in the through hole 1221. It can be understood that the hole wall of the through hole 1221 is provided with threads, and the threads on the hole wall of the through hole 1221 are matched with the threads on the screw rod 25 to realize the movement of the lower die head 12 as the screw rod 25 rotates, that is, the lower die head 12 is driven by the driving member 23 to move.

[0069] By arranging the screw rod 25 in the through hole 1221 of the lower die head 12 , the lower die head 12 can be driven to move, and at the same time, the relative position relationship between the upper die head 11 and the lower die head 12 is maintained during the movement of the lower die head 12 , thereby realizing the translation of the lower die head 12 .

[0070] Continue reading Figure 2 , the upper die head 11 is formed with a mounting groove (not marked in the figure), and the lower die head 12 is arranged in the mounting groove. Specifically, the upper die head 11 includes a first division 111 and a second division 112 which are arranged perpendicular to each other, and a mounting groove is defined between the first division 111 and the second division 112. The lower die head 12 cooperates with the first division 111 to form a coating slit 10. The surface of the lower die head 12 facing away from the coating slit 10 is in contact with the second division 112. The surface of the second division 112 facing away from the coating slit 10 is defined as the top surface of the upper die head 11. Optionally, the first division 111 and the second division 112 are integrally formed. Optionally, the first division 111 and the second division 112 are fixedly connected by means of adhesive, welding or bolts.

[0071] Figure 1 Combination Figure 2 The adjustment assembly 2 further includes a connection block 26, which is disposed on the side of the upper die head 11. Optionally, the connection block 26 is fixedly connected to the upper die head 11 (for example, bolted or welded) to achieve the fixation of the relative position of the connection block 26 and the upper die head 11. Optionally, the guide rail 21 is fixed to the connection block 26, and the guide rail 21 is fixed to the upper die head 11 through the connection block 26.

[0072] The connecting block 26 includes a first sub-block 261, a second sub-block 262 and a third sub-block 263 which are connected in sequence. Optionally, the first sub-block 261, the second sub-block 262 and the third sub-block 263 are fixedly connected to the upper die head 11 respectively.

[0073] The first sub-block 261 and the third sub-block 263 are respectively arranged on opposite sides of the protrusion 122. The protrusion 122 is spaced apart from the first sub-block 261. The protrusion 122 abuts against the third sub-block 263. The first sub-block 261 is located on the side of the third sub-block 263 away from the coating slit 10. The third sub-block 263 limits the position of the protrusion 122, that is, the third sub-block 263 limits the lower die 12. By designing the positional relationship and connection relationship between the upper die 11, the connecting block 26, and the protrusion 122, the relative position between the upper die 11 and the lower die 12 is fixed, specifically, the upper and lower positions of the upper die 11 and the lower die 12 are relatively fixed.

[0074] The adjustment assembly 2 further includes a connecting plate 27. The connecting plate 27 is connected to the connecting block 26. The screw rod 25 is connected to the driving member 23 through the connecting plate 27; in this case, the connecting plate 27 is a structural member used to fix the driving member 23. When the adjustment assembly 2 includes a reducer 24, the screw rod 25 is connected to the reducer 24 and the driving member 23 through the connecting plate 27; in this case, the connecting plate 27 is a structural member used to fix the reducer 24.

[0075] The coating assembly also includes a limit block 3, which is arranged on the top surface of the coating die 1, and part of the limit block 3 extends out of the side of the coating die 1. The connecting block 26 abuts against the part of the limit block 3 extending out of the coating die 1. Wherein, due to the positional relationship between the upper die 11 and the lower die 12, the top surface of the coating die 1 refers to the top surface of the upper die 11. The above design is performed by setting the limit block 3 and the positional relationship between the connecting block 26 and the limit block 3, maintaining the parallelism of the adjustment assembly 2 and the upper die 11, and ensuring that the movement of the upper die 11 and / or the lower die 12 is a translation.

[0076] Optionally, the surface of the stopper 3 in contact with the coating die 1 is defined as the first surface, and the surface of the stopper 3 in contact with the connecting block 26 is defined as the second surface, and the first surface and the second surface belong to the same plane, so that the surface of the connecting block 26 away from the coating slit 10 is flush with the top surface of the coating die 1, and the parallelism between the adjustment component 2 and the upper die 11 is maintained, ensuring that the movement of the upper die 11 and / or the lower die 12 is translational. Exemplarily, the stopper 3 is a plate-like structure. In a specific embodiment, the stopper 3 is a rectangular parallelepiped structure.

[0077] Optionally, the limit block 3 is fixedly connected (for example, bolted) to the upper die head 11 of the coating die head 1 and the first sub-block 261 of the connecting block 26, respectively, to fix the relative position between the limit block 3 and the coating die head 1 and the adjustment component 2, and maintain the parallelism between the adjustment component 2 and the upper die head 11.

[0078] The coating assembly also includes a sealing assembly 4. The sealing assembly 4 covers the gap on the side of the coating die 1. The sealing assembly 4 is a structural member used to seal the gap on the side of the coating die 1. The sealing assembly 4 covers the gap formed between the side of the upper die 11 and the side of the lower die 12 to seal the side of the coating die 1, prevent the coating liquid from leaking from the side of the coating die 1, and maintain the coating assembly with a good coating effect. The sealing assemblies 4 are respectively provided on the sides of the opposite sides of the coating die 1.

[0079] Specifically, the sealing assembly 4 includes a sealing ring 41 and a sealing plate 42. The sealing ring 41 is arranged around the gap between the upper die head 11 and the lower die head 12. The sealing plate 42 is arranged to cover the sealing ring 41. The sealing ring 41 has a certain deformation ability. Under the tight pressure of the sealing plate 42, the sealing ring 41 shrinks as the upper die head 11 and / or the lower die head 12 translates, and the gap on the side between the upper die head 11 and the lower die head 12 is kept within the space defined by the sealing ring 41, thereby sealing the gap on the side of the coating die head 1.

[0080] Optionally, the edge of the orthographic projection of the sealing plate 42 on the coating die head 1 exceeds the edge of the coating die head 1, and a good sealing effect can be achieved before and after the width of the coating slit 10 is adjusted.

[0081] Optionally, the sealing plate 42 is disposed between the connecting block 26 and the coating die head 1 , and the connecting block 26 has a certain extrusion and fixing effect on the sealing plate 42 , further strengthening the sealing of the gap on the side of the coating die head 1 .

[0082] The coating assembly further includes a width measuring instrument 5, which is disposed on one side of the coating die 1. The width measuring instrument 5 is configured to detect the width of the coating slit 10 formed by the upper die 11 and the lower die 12.

[0083] The coating component also includes a control component (not shown), and the width measuring meter 5 and the adjustment component 2 are respectively connected to the control component; the control component is configured to receive the detection result of the width measuring meter 5, and control the adjustment component 2 to drive the translation direction and translation amount of the upper die head 11 and / or the lower die head 12 according to the detection result of the width measuring meter 5.

[0084] By setting the width measuring instrument 5, the width of the coating slit 10 can be automatically detected and detected in real time, and the control component can be fed back. The control component controls the adjustment component 2 to drive the translation of the upper die head 11 and / or the lower die head 12 according to the detection result of the width measuring instrument 5, so that the width of the coating slit 10 reaches the set value, and the real-time monitoring and feedback control are realized, which saves the manpower and time cost of repeated disassembly and assembly, and can also reduce the error of repeated assembly. By adding the width measuring instrument 5, if the width of the coating slit 10 adjusted by the adjustment component 2 deviates, the adjustment component 2 is controlled to adjust according to the detection result of the width measuring instrument 5 and the set value of the coating slit 10, so as to reduce the error and improve the adjustment accuracy and reliability. It should be noted that the width measuring instrument 5 is an optional structure, and whether the width measuring instrument 5 needs to be set is selected according to the specific needs.

[0085] The adjustment component 2 cooperates with the width measuring instrument 5 to automatically adjust the width of the coating slit 10 to a set value, saving debugging time for manual disassembly and assembly of the coating die head 1. It has a simple structure and high control accuracy, which is conducive to improving production efficiency.

[0086] In one embodiment, the width measuring instrument 5 is disposed on the side of the coating die 1; specifically, the width measuring instrument 5 is disposed corresponding to the gap on the side of the coating die 1 to detect the width of the gap on the side of the coating die 1. The width of the gap on the side of the coating die 1 is the same as the width of the coating slit 10 of the coating die 1, so the width of the coating slit 10 can be known by detecting the width of the gap on the side of the coating die 1.

[0087] In one embodiment, the width measuring instrument 5 is fixed to other structural components of a coating device having a coating assembly provided by an embodiment of the present application, and can detect a width greater than the coating slit 10 .

[0088] In one embodiment, the width measuring instrument 5 can measure the width of the gap by laser interferometry. Exemplarily, the width measuring instrument 5 can be a laser displacement sensor.

[0089] When the coating assembly includes a width measuring instrument 5, the width measuring instrument 5 can be fixed to the sealing plate 42. The sealing assembly 4 does not completely cover the gap on the side of the coating die 1, and the sealing assembly 4 reserves a small gap on the side of the coating die 1 close to the coating slit 10 for the width measuring instrument 5 to detect.

[0090] In one embodiment, an adjustment component 2 is respectively provided on opposite sides of the coating die 1 to keep the movement of the upper die 11 and / or the lower die 12 as translation along the length direction of the coating die 1, and the translation amount of the upper die 11 and / or the lower die 12 at each location is the same, so that the width of the coating slit 10 at each location along the length direction of the coating die 1 is kept the same, and the thickness of the film layer coated by the coating component is uniform, thereby achieving a better coating effect.

[0091] And / or, a width measuring instrument 5 is respectively provided on the opposite sides of the coating die 1, which is conducive to the precise control of the adjustment components 2 on the opposite sides of the coating die 1, and the width of the coating slit 10 at the opposite ends of the coating die 1 can be leveled according to the measurement values ​​fed back from the opposite sides of the coating die 1, so as to keep the width of the coating slit 10 at various locations along the length direction of the coating die 1 the same, and the thickness of the film layer coated by the coating component is uniform, thereby achieving a better coating effect.

[0092] Continue reading Figure 2 The lower die head 12 is provided with a liquid inlet 123, and the coating liquid enters from the liquid inlet 123, flows out from the coating slit 10 through the gap between the upper die head 11 and the lower die head 12, and the liquid is coated on the surface of the workpiece.

[0093] See also Figure 4 , Figure 4 yes Figure 2 A schematic diagram of the side view of the structure shown.

[0094] The upper die head 11 and the lower die head 12 cooperate to form a liquid collecting chamber 13, which is located on the fluid flow path between the liquid inlet 123 and the coating slit 10. In other words, along the flow path of the fluid, the liquid collecting chamber 13 is located upstream of the coating slit 10. The maximum width of the liquid collecting chamber 13 is greater than the width of the coating slit 10. The liquid collecting chamber 13 is in the shape of a smooth curve, so that the liquid flows out of the coating slit 10 smoothly, which can make the coating of the liquid more uniform. Optionally, the liquid collecting chamber 13 is in the shape of a water drop.

[0095] The orthographic projection of the detection light emitted by the width measuring instrument 5 on the coating die head 1 is misaligned with the liquid collecting chamber 13. Since the size of the liquid collecting chamber 13 along the width direction of the coating slit 10 is larger than the width of the coating slit 10, the accuracy of the detection result of the width measuring instrument 5 is improved by misaligning the orthographic projection of the detection light emitted by the width measuring instrument 5 on the coating die head 1 with the liquid collecting chamber 13.

[0096] In a specific embodiment, an adjustment component 2 and a width measuring instrument 5 are respectively provided on opposite sides of the coating die head 1. The guide rail 21 of the adjustment component 2 is connected to the upper die head 11, and the slider 22 is connected to the lower die head 12; the adjustment component 2 includes a driving member 23, which is connected to the lower die head 12 through a reducer 24, and the driving member 23 is configured to drive the lower die head 12 to translate in a direction close to or away from the upper die head 11, so as to adjust the width of the coating slit 10 of the coating die head 1.

[0097] The present application also provides a coating device, which includes the coating assembly described in the above embodiment and has at least the same technical effect as the coating assembly. The structure and function of the coating device other than the coating assembly can be referred to in the prior art and will not be described in detail.

[0098] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A coating component, characterized in that: include: A coating die head comprises an upper die head and a lower die head; a coating slit is formed between the upper die head and the lower die head; An adjusting component is disposed on a side of the coating die head; the adjusting component is configured to drive the upper die head and / or the lower die head to translate to adjust the width of the coating slit.

2. The coating assembly according to claim 1, characterized in that: The adjustment assembly includes a guide rail and a slider, the slider is slidably connected to the guide rail, the slider is connected to the lower die head and / or the upper die head, and the guide rail extends linearly along the width direction of the coating slit.

3. The coating assembly according to claim 1 or 2, characterized in that: The adjustment assembly further includes a driving member, which is connected to the lower die head and / or the upper die head, and is configured to drive the lower die head and / or the upper die head to translate.

4. The coating assembly according to claim 3, characterized in that: The adjustment assembly further includes a reducer; the driving member is connected to the lower die head via the reducer, and / or the driving member is connected to the upper die head via the reducer.

5. The coating assembly according to claim 3, characterized in that: The adjustment assembly further includes a screw rod, and the screw rod is connected to the driving member; The lower die head includes a main body and a protrusion arranged on the side of the main body, the side of the main body is flush with the side of the upper die head; the protrusion is provided with a through hole, the axis of the through hole is parallel to the width direction of the coating slit; the screw rod is arranged in the through hole.

6. The coating assembly according to claim 3, characterized in that: The driving member includes a servo motor.

7. The coating assembly according to claim 6, characterized in that: The servo motor is a linear motor with a positioning accuracy and a repeat positioning accuracy both less than or equal to 2 μm.

8. The coating assembly according to claim 2, characterized in that: The adjustment assembly further includes a connecting block; the connecting block is arranged on the side of the upper die head; the guide rail is fixed to the connecting block; The coating assembly further comprises a limit block, which is arranged on the top surface of the coating die head, and part of the limit block extends out of the side surface of the coating die head; the connecting block abuts against the part of the limit block extending out of the coating die head.

9. The coating assembly according to claim 1, characterized in that: The lower die head comprises a main body and a protrusion arranged on a side of the main body, and the side of the main body is flush with the side of the upper die head; The adjustment component also includes a connecting block, which is arranged on the side of the upper die head; the connecting block includes a first sub-block, a second sub-block and a third sub-block which are connected in sequence, the first sub-block and the third sub-block are respectively arranged on two opposite sides of the protrusion, the protrusion is spaced apart from the first sub-block, the protrusion is abutted against the third sub-block, and the first sub-block is located on the side of the third sub-block away from the coating slit.

10. The coating assembly according to claim 1, characterized in that: The coating assembly further comprises a sealing assembly, which covers the gap on the side of the coating die head.

11. The coating assembly according to claim 10, characterized in that: The sealing assembly comprises a sealing ring and a sealing plate. The sealing ring is arranged around the gap between the upper die head and the lower die head, and the sealing plate covers the sealing ring.

12. The coating assembly according to claim 1, characterized in that: The upper die head cooperates with the lower die head to form a liquid collecting chamber; along the flow path of the fluid, the liquid collecting chamber is located upstream of the coating slit; and the maximum width of the liquid collecting chamber is greater than the width of the coating slit.

13. The coating assembly according to claim 12, characterized in that: The shape of the liquid collecting chamber is a smooth curve.

14. The coating assembly according to claim 12, characterized in that: The liquid collecting chamber is in a water drop shape.

15. The coating assembly according to claim 1, characterized in that: The coating assembly further comprises a width measuring instrument disposed on one side of the coating die head; the width measuring instrument is configured to detect the width of a coating slit formed by the cooperation of the upper die head and the lower die head.

16. The coating assembly according to claim 15, characterized in that: The coating die head is provided with an adjustment component on opposite sides thereof; And / or, one width measuring instrument is provided on opposite sides of the coating die head respectively.

17. The coating assembly according to claim 15, characterized in that: The upper die head cooperates with the lower die head to form a liquid collecting cavity; The orthographic projection of the detection light emitted by the width measuring instrument on the coating die head is misaligned with the liquid collecting chamber.

18. The coating assembly according to claim 15, characterized in that: The coating component also includes a control component, and the width measuring instrument and the adjustment component are respectively connected to the control component; the control component is configured to receive the detection result of the width measuring instrument, and control the adjustment component to drive the translation direction and translation amount of the upper die head and / or the lower die head according to the detection result of the width measuring instrument.

19. The coating assembly according to claim 12, characterized in that: The lower die head is provided with a liquid inlet, and the liquid collecting chamber is located on the fluid flow path between the liquid inlet and the coating slit.

20. A coating device, characterized in that: Comprising the coating component according to any one of claims 1 to 19.

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