A doctor blade coating mechanism

Abstract

A doctor blade coating mechanism includes: a doctor blade with upright plates at both ends; a liquid storage tank located on the forward direction side of the doctor blade; the length of the liquid storage tank matches the length of the doctor blade; a convex shaft is provided on the liquid storage tank, and a movable groove is provided on the upright plate corresponding to the position of the convex shaft, the convex shaft being movably disposed within the movable groove; a first telescopic unit is also provided on the upright plate, the outer wall of the first telescopic unit being fixed to the upright plate, and the telescopic rod of the first telescopic unit being connected to the convex shaft; when the first telescopic unit is in a first working state, the liquid storage tank is in contact with the doctor blade; when the first telescopic unit is in a second working state, there is a gap between the liquid storage tank and the doctor blade, and the coating liquid in the liquid storage tank flows from the gap to the surface of the substrate to be coated. This doctor blade coating mechanism makes the coating liquid application more uniform.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to a doctor blade coating mechanism. Background Technology

[0002] Existing sheet coating equipment typically uses a pipette to drop the coating liquid onto the edge of the doctor blade during the coating operation. However, this method suffers from uneven liquid distribution, especially with low-viscosity coating liquids, which can easily lead to uncontrollable flow of the coating liquid, resulting in uneven film thickness after coating.

[0003] How to solve the above-mentioned technical problems has become an urgent technical challenge for the industry. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a doctor blade coating mechanism that makes the coating liquid more evenly applied.

[0005] To achieve the above objectives, this application provides a doctor blade coating mechanism, comprising: A scraper, with upright plates at both ends; A liquid storage tank is located on the side of the scraper in the forward direction. The length of the liquid storage tank is matched with the length of the scraper. The liquid storage tank is equipped with a convex shaft, and the vertical plate is equipped with a movable groove corresponding to the position of the convex shaft. The convex shaft is movably set in the movable groove. The upright plate is also provided with a first telescopic unit. The outer wall of the first telescopic unit is fixed to the upright plate, and the telescopic rod of the first telescopic unit is connected to the convex shaft. When the first telescopic unit is in the first working state, the liquid storage tank is in contact with the scraper. When the first telescopic unit is in the second working state, there is a gap between the liquid storage tank and the scraper, and the coating liquid in the liquid storage tank flows from the gap to the surface of the substrate to be coated.

[0006] Preferably, there are two of each of the first telescopic unit and the upright plate, with one first telescopic unit and one upright plate matched at each end of the liquid storage tank.

[0007] Preferably, it further includes: The fixing block is used to connect the cam shaft and the telescopic rod.

[0008] Preferably, it further includes: A crossbeam, which connects the vertical plates at both ends; A second telescopic unit is provided on the crossbeam, and the second telescopic unit is connected to the scraper.

[0009] Preferably, the housing of the second telescopic unit is fixed on the crossbeam, and the telescopic rod of the second telescopic unit is connected to the scraper.

[0010] Preferably, a magnetic attraction part is provided between the second telescopic unit and the scraper.

[0011] Preferably, a coupling is also provided between the magnetic suction part and the second telescopic unit.

[0012] Preferably, the second telescopic unit includes multiple units.

[0013] Preferably, the lower edge of the liquid storage tank is not lower than the lower edge of the scraper.

[0014] Preferably, the liquid storage tank is made of Teflon.

[0015] The above technical solution can control the gap between the liquid storage tank and the surface of the scraper by controlling the first telescopic unit, thereby controlling the amount of coating liquid flowing to the substrate surface. This avoids the phenomenon of uneven film thickness caused by uncontrolled flow of coating liquid on the substrate surface. The design of the magnetic suction part makes the scraper disassembly more convenient, which is conducive to the replacement and cleaning of the scraper.

[0016] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the doctor blade coating mechanism according to an embodiment of this application; Figure 2 This is a three-dimensional structural diagram of the doctor blade coating mechanism from another perspective according to an embodiment of this application; Figure 3 This is a side view of a doctor blade coating mechanism according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure when the scraper and the liquid storage tank are in contact according to an embodiment of this application.

[0018] Figure label: 101-Vertical plate; 102-Horizontal beam; 103-Scraper; 104-Liquid storage tank; 105-Second telescopic unit; 106-Fixing block; 107-First telescopic unit; 108-Moving groove; 109-Magnetic suction part; 110-Coupling; 111-Protruding shaft. Detailed Implementation

[0019] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0021] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0022] It should be noted that the terms "first" and "second" may be used in this application only to distinguish different devices, components or parts, and are not used to define the order of functions performed by these devices, components or parts or their interdependence.

[0023] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "More" should be understood as two or more.

[0024] The blade coating mechanism of this application includes: Scraper 103, with vertical plates 101 at both ends; Liquid storage tank 104 is located on the forward direction side of scraper 103; The length of the liquid storage tank 104 matches the length of the scraper 103; The liquid storage tank 104 is provided with a convex shaft 111, and the vertical plate 101 is provided with a movable groove 108 corresponding to the position of the convex shaft 111. The convex shaft 111 is movably disposed in the movable groove 108. The upright plate 101 is also provided with a first telescopic unit 107. The outer wall of the first telescopic unit 107 is fixed on the upright plate 101, and the telescopic rod of the first telescopic unit 107 is connected to the convex shaft 111. When the first telescopic unit 107 is in the first working state, the liquid storage tank 104 is in contact with the scraper 103. When the first telescopic unit 107 is in the second working state, there is a gap between the liquid storage tank 104 and the scraper 103, and the coating liquid in the liquid storage tank 104 flows from the gap to the surface of the substrate to be coated.

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0026] Example 1 Figure 1 This is a three-dimensional structural diagram of the doctor blade coating mechanism according to an embodiment of this application. Figure 2 This is a three-dimensional structural diagram of the doctor blade coating mechanism from another perspective according to an embodiment of this application. Figure 3 This is a side view of the doctor blade coating mechanism according to an embodiment of this application. Figure 4 This is a schematic diagram of the structure when the scraper and the liquid storage tank are in contact according to an embodiment of this application, as shown below. Figure 1-4 As shown, the blade coating mechanism of this application embodiment includes two opposing vertical plates 101, which are parallel as needed.

[0027] In one exemplary embodiment, the two uprights 101 are symmetrical as needed.

[0028] In one exemplary embodiment, the lower surfaces of the two upright plates 101 are in the same plane and parallel to the coating surface of the substrate located below them.

[0029] In one exemplary embodiment, the blade coating mechanism of this application further includes a crossbeam 102.

[0030] In one exemplary embodiment, the crossbeam 102 connects two vertical plates 101, and the crossbeam 102 and the vertical plates 101 are perpendicular to each other as needed. Figure 1 and Figure 2 As shown.

[0031] In one exemplary embodiment, the crossbeam 102 is connected to a scraper 103, that is, the scraper 103 is disposed between two uprights 101.

[0032] In one exemplary embodiment, the scraper 103 may be made of metal, if necessary.

[0033] In one exemplary embodiment, a second telescopic unit 105 is provided on the crossbeam 102, and the second telescopic unit 105 is connected to the scraper 103; for example, the housing of the second telescopic unit 105 is fixed on the crossbeam 102, and the telescopic rod of the second telescopic unit 105 is connected to the scraper 103.

[0034] In one exemplary embodiment, the second telescopic unit 105 is used to control the gap size between the scraper 103 and the substrate.

[0035] In one exemplary embodiment, a magnetic suction part 109 is provided between the second telescopic unit 105 and the scraper 103. The design of the magnetic suction part 109 makes the scraper 103 easy to disassemble, which is conducive to the replacement and cleaning of the scraper 103.

[0036] In one exemplary embodiment, a coupling 110 is also provided between the magnetic suction part 109 and the second telescopic unit 105.

[0037] In one exemplary embodiment, the second telescopic unit 105 includes multiple units, for example, two units. Figure 1 and Figure 2 As shown.

[0038] In one exemplary embodiment, two second telescopic units 105 are positioned at both ends of the scraper 103 as needed. This design facilitates the adjustment of the consistency of the gap size between the scraper 103 blade and the substrate.

[0039] In one exemplary embodiment, the blade coating mechanism of this application further includes a liquid storage tank 104.

[0040] In one exemplary embodiment, a liquid reservoir 104 is used to store coating liquid, and the liquid reservoir 104 is disposed on the forward direction side of the scraper 103.

[0041] In one exemplary embodiment, the length of the liquid reservoir 104 matches the length of the scraper 103.

[0042] In one exemplary embodiment, the liquid storage tank 104 is provided with a convex shaft 111. For example, the convex shaft 111 is provided at the end of the liquid storage tank 104. As needed, convex shafts 111 can be provided at both ends of the liquid storage tank 104.

[0043] In an exemplary embodiment, the upright plate 101 is provided with a movable groove 108 at the position corresponding to the convex shaft 111. As needed, the movable groove 108 is an elliptical groove, and the maximum diameter of the movable groove 108 is parallel to the movement direction of the scraper 103.

[0044] In one exemplary embodiment, the convex shaft 111 is movably disposed within the movable groove 108.

[0045] In one exemplary embodiment, as needed, at least one convex shaft 111 is provided at both ends of the liquid storage tank 104.

[0046] In one exemplary embodiment, the upright plate 101 is further provided with a first telescopic unit 107, for example, the first telescopic unit 107 is provided on the outside of the upright plate 101.

[0047] In one exemplary embodiment, the outer wall of the first telescopic unit 107 is fixed to the upright plate 101, and the telescopic rod of the first telescopic unit 107 is connected to the convex shaft 111; as needed, the telescopic rod of the first telescopic unit 107 is fixed to the fixing block 106, and the fixing block 106 is in turn fixedly connected to the convex shaft 111, such as... Figure 1 , Figure 2 as well as Figure 3 As shown.

[0048] In an exemplary embodiment, when the first telescopic unit 107 is in a first working state, the liquid storage tank 104 is in contact with the scraper 103; when the first telescopic unit 107 is in a second working state, there is a gap between the liquid storage tank 104 and the scraper 103, and the coating liquid in the liquid storage tank 104 flows from the gap to the surface of the substrate to be coated; it can be understood that when the liquid storage tank 104 and the scraper 103 are in contact, the coating liquid in the liquid storage tank 104 will not flow out; when the liquid storage tank 104 moves away from the scraper 103, a gap is formed between the liquid storage tank 104 and the scraper 103, and the coating liquid in the liquid storage tank 104 will flow out from the gap, and the coating liquid flows along the surface of the scraper 103 to the surface of the substrate to be coated.

[0049] In one exemplary embodiment, the first working state of the first telescopic unit 107 may be an extended state, and the second working state of the first telescopic unit 107 may be a retracted state, as needed.

[0050] In one exemplary embodiment, both the first telescopic unit 107 and the upright plate 101 are two in number, and each end of the liquid storage tank 104 is matched with a first telescopic unit 107 and an upright plate 101; it can be understood that the two upright plates 101 are symmetrical, and the positions of the components on the upright plates 101 are also corresponding.

[0051] In one exemplary embodiment, the first telescopic unit 107 may be a cylinder if necessary.

[0052] In one exemplary embodiment, in order to prevent the liquid storage tank 104 from damaging the scraper 103 during movement, the liquid storage tank 104 can be made of Teflon material; of course, the liquid storage tank 104 can also be made of other materials, and a Teflon coating can be plated on the surface of the liquid storage tank 104.

[0053] In one exemplary embodiment, the lower edge of the liquid storage tank 104 is not lower than the lower edge of the scraper 103, and the position of the blade of the scraper 103 is usually selected at the lower edge height of the liquid storage tank as needed.

[0054] It will be understood by those skilled in the art that the above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A doctor blade coating mechanism characterized by, include: A scraper, wherein the scraper has upright plates at both ends; A liquid storage tank is disposed on the forward direction side of the scraper; The length of the liquid storage tank is matched with the length of the scraper. The liquid storage tank is provided with a convex shaft, and the vertical plate is provided with a movable groove corresponding to the position of the convex shaft. The convex shaft is movably disposed in the movable groove. The upright plate is also provided with a first telescopic unit, the outer wall of the first telescopic unit is fixed on the upright plate, and the telescopic rod of the first telescopic unit is connected to the convex shaft; When the first telescopic unit is in the first working state, the liquid storage tank is in contact with the scraper; When the first telescopic unit is in the second working state, there is a gap between the liquid storage tank and the scraper, and the coating liquid in the liquid storage tank flows from the gap to the surface of the substrate to be coated.

2. The doctor blade coating mechanism according to claim 1, wherein Both the first telescopic unit and the upright plate are included in two, and each end of the liquid storage tank is matched with a first telescopic unit and an upright plate.

3. The doctor blade coating mechanism of claim 1, wherein, It also includes: A fixing block is used to connect the convex shaft and the telescopic rod.

4. The doctor blade coating mechanism of claim 1, wherein, It also includes: A crossbeam, which connects the vertical plates at both ends; The crossbeam is equipped with a second telescopic unit, which is connected to the scraper.

5. The doctor blade coating mechanism according to claim 4, wherein The housing of the second telescopic unit is fixed to the crossbeam, and the telescopic rod of the second telescopic unit is connected to the scraper.

6. The doctor blade coating mechanism according to claim 5, wherein A magnetic attraction part is provided between the second telescopic unit and the scraper.

7. The doctor blade coating mechanism according to claim 6, wherein A coupling is also provided between the magnetic suction part and the second telescopic unit.

8. The doctor blade coating mechanism of claim 4, wherein, The second telescopic unit includes multiple units.

9. The doctor blade coating mechanism of claim 1, wherein, The lower edge of the liquid storage tank is not lower than the lower edge of the scraper.

10. The doctor blade coating mechanism of claim 1, wherein, The liquid storage tank is made of Teflon.

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