A doctor blade coating mechanism

Abstract

A doctor blade coating mechanism comprises a wire bar, two ends of the wire bar are respectively connected with a vertical plate; a liquid blocking plate is arranged between the two vertical plates and is arranged on the side of the wire bar and is movable up and down; a liquid blocking plate adjusting unit is used for connecting the vertical plate and the liquid blocking plate, and is used for adjusting the gap size between the liquid blocking plate and the substrate; the length size of the liquid blocking plate matches the length size of the wire bar; a coating liquid containing area is arranged between the wire bar and the liquid blocking plate, and the coating liquid which leaks from the gap between the liquid blocking plate and the wire bar to the surface of the substrate is subjected to roll coating operation when the wire bar rotates. The doctor blade coating mechanism solves the problem that the existing structure has poor coating effect when facing low viscosity or poor leveling coating liquid.

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] A doctor blade coater is a coating device that removes excess coating liquid with a doctor blade to maintain a high degree of smoothness on the coating surface. However, existing doctor blade coaters have limited functionality and do not achieve ideal coating results when dealing with coating liquids with low viscosity or poor leveling properties.

[0003] Ensuring coating effectiveness even when using blade coating machines with low viscosity or poor leveling properties has become a pressing technical challenge in 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 solves the problem of poor coating effect when the existing structure is faced with coating liquid with low viscosity or poor leveling properties.

[0005] To achieve the above objectives, this utility model provides a doctor blade coating mechanism, comprising: A wire rod, with a vertical plate connected to each end of the wire rod; A baffle plate is installed between two vertical plates and can be moved up and down on the side of the line bar. The baffle adjustment unit is used to connect the vertical plate and the baffle, and is used to adjust the gap between the baffle and the substrate. The length of the baffle plate is matched with the length of the wire rod; A coating liquid receiving area is provided between the bar and the baffle plate. When the bar rotates, the coating liquid that seeps from the gap between the baffle plate and the bar onto the substrate surface is used for roller coating.

[0006] Preferably, the baffle adjustment unit includes: The first telescopic unit has its housing connected to the vertical plate and its telescopic rod connected to the baffle plate. The first telescopic unit is used to control the gap size between the liquid baffle and the substrate.

[0007] Preferably, it further includes: The bar extrusion pressure adjustment unit is mounted on the vertical plate and is used to adjust the extrusion pressure on the substrate during bar coating.

[0008] Preferably, limiting grooves are provided on the opposing sides of the two upright plates; The bar is movable up and down within the limiting groove; The bar extrusion pressure adjustment unit includes: The second telescopic unit, fixed to the upright plate, is used to adjust the pressure exerted on the substrate during bar coating. The bar is connected to the upright plate via bearings. The second telescopic unit adjusts the extrusion pressure on the substrate during bar coating by adjusting the extrusion pressure of the bearing.

[0009] Preferably, it further includes: A scraper is positioned between two upright plates. A scraper is used to scrape and coat the substrate after it has been coated with wire rod.

[0010] Preferably, a fixing plate is provided between the two upright plates, and a third telescopic unit is provided on the fixing plate; The third telescopic unit is connected to the scraper and is used to adjust the gap between the scraper and the substrate.

[0011] Preferably, the third telescopic unit is connected to the scraper via a magnetic attraction part.

[0012] Preferably, a coupling is also provided between the third telescopic unit and the magnetic suction part.

[0013] Preferably, the scraper and the baffle are positioned on opposite sides of the bar.

[0014] The above technical solution solves the problem of poor coating effect when the existing structure is used with coating liquids of low viscosity or poor leveling properties; the simultaneous setting of the doctor blade and the wire bar further ensures the coating effect and also makes it possible to deal with coating liquids of different viscosities, making it more adaptable; the magnetic structure makes it easier to disassemble and replace the doctor blade.

[0015] 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 this application. Attached Figure Description

[0016] 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 rear view of the doctor blade coating mechanism according to an embodiment of this application; Figure 4 This is a top view of the doctor blade coating mechanism according to an embodiment of this application; Figure 5 for Figure 4Sectional view at point AA'.

[0017] Figure label: 101-Upright plate; 102-Baffle plate; 103-Plug; 104-First fixing part; 105-First telescopic unit; 106-Limiting groove; 107-Scraper; 108-Third telescopic unit; 109-Fixing plate; 110-Second fixing part; 111-Second telescopic unit; 112-Plug fixing screw; 113-Magnetic suction part; 114-Coupling; 115-Bearing. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] The blade coating mechanism of this application includes: A rod 103, with a vertical plate 101 connected to each end of the rod 103; A baffle plate 102 is disposed between two vertical plates 101 and is movable up and down on the side of the line bar 103. A liquid baffle adjustment unit is used to connect the vertical plate 101 and the liquid baffle 102. The liquid baffle adjustment unit is used to adjust the gap size between the liquid baffle 102 and the substrate. The length of the baffle plate 102 matches the length of the wire rod 103; A coating liquid receiving area is provided between the wire rod 103 and the liquid baffle 102. When the wire rod 103 rotates, the coating liquid that seeps from the gap between the liquid baffle 102 and the wire rod 103 onto the surface of the substrate is used for roller coating.

[0024] 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.

[0025] 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 rear view of the doctor blade coating mechanism according to an embodiment of this application. Figure 4 This is a top view of the doctor blade coating mechanism according to an embodiment of this application. Figure 5 for Figure 4 Sectional view at point AA', as shown Figure 1-5 As shown, the blade coating mechanism of this application embodiment includes two opposing vertical plates 101, which are parallel as needed.

[0026] In one exemplary embodiment, the two uprights 101 are symmetrical as needed.

[0027] In one exemplary embodiment, the lower surfaces of the two upright plates 101 are on the same plane, and a limiting groove 106 is provided on the opposite side of the two upright plates 101, which can be understood as a limiting groove 106 being provided on the inner side of the upright plates 101.

[0028] In one exemplary embodiment, the limiting groove 106 is used to place the rod 103, which can be understood as the rod 103 having a vertical plate 101 connected to each end.

[0029] In one exemplary embodiment, the rod 103 is movably disposed within the limiting groove 106; it can be understood that after the two upright plates 101 are fixed, the rod 103 is placed through the limiting groove 106 on the inner side of the two upright plates 101, such as... Figure 1 As shown.

[0030] In one exemplary embodiment, the shaft of the bar 103 is fixed to the upright plate 101, for example, the bar 103 is fixed to the upright plate 101 by a bearing 115; the bar 103 performs coating operations on the substrate when rotating.

[0031] In one exemplary embodiment, the blade coating mechanism of this application further includes a liquid baffle 102.

[0032] In one exemplary embodiment, the baffle plate 102 is disposed between two vertical plates 101 and is movable up and down on the side of the line bar 103.

[0033] In one exemplary embodiment, the liquid baffle 102 forms an inclined angle with the bottom edge of the upright plate 101 or with the coating surface of the substrate. Typically, the upper end of the liquid baffle 102 is inclined in the forward direction of the coating operation, so that the coating liquid on the liquid baffle 102 flows towards the bar 103. This can be understood as the liquid baffle 102 and the coating surface of the substrate being non-perpendicular. Figure 1 As shown, this design is to facilitate the application of coating liquid through the baffle plate 102 onto the substrate surface.

[0034] In one exemplary embodiment, a coating liquid receiving area is provided between the wire rod 103 and the liquid baffle 102. When the wire rod 103 rotates, the coating liquid adhering to the surface of the wire rod 103 is applied to the substrate. It can be understood that the liquid baffle 102 is used to restrict the outflow of coating liquid in the coating liquid receiving area, so that when the wire rod 103 rotates, the coating liquid adhering to the wire rod 103 is applied to the substrate by roller.

[0035] In one exemplary embodiment, the doctor blade coating mechanism of this application further includes a liquid baffle adjustment unit.

[0036] In one exemplary embodiment, the baffle adjustment unit is used to adjust the gap size between the baffle 102 and the substrate.

[0037] In one exemplary embodiment, a baffle plate adjustment unit is used to connect the upright plate 101 and the baffle plate 102.

[0038] In one exemplary embodiment, the baffle adjustment unit includes a first telescopic unit 105.

[0039] In one exemplary embodiment, the first telescopic unit 105 is fixed on the upright plate 101 and connected to the liquid baffle 102; for example, the housing of the first telescopic unit 105 is fixed on the upright plate 101, and the telescopic rod of the first telescopic unit 105 is connected to the liquid baffle 102.

[0040] In an exemplary embodiment, the first telescopic unit 105 is used to control the gap size between the liquid baffle 102 and the substrate. When the gap between the liquid baffle 102 and the substrate is large, more and faster liquid seeps into the substrate surface from the liquid containing the coating liquid. When the gap between the liquid baffle 102 and the substrate is small, less and slower liquid seeps into the substrate surface from the liquid containing the coating liquid. It can be understood that the liquid baffle 102 is used to limit the speed at which the coating liquid spreads in the forward direction on the substrate surface. Because many coating liquids evaporate very quickly, if not limited, the coating liquid will leave traces on the edge of the substrate surface after evaporation, thus affecting product quality. After being limited by the liquid baffle 102, the phenomenon of the coating liquid leaving traces on the substrate surface after free flow, evaporation and drying is avoided.

[0041] In one exemplary embodiment, the bar 103 roll-coates the coating liquid that leaks from the gap between the baffle plate 102 and the bar 103 onto the substrate surface.

[0042] In an exemplary embodiment, the coating liquid may enter the surface of the substrate directly through the baffle plate 102, or it may enter the surface of the substrate after the coating liquid comes into contact with both the baffle plate 102 and the wire rod 103. It can be understood that before the coating liquid enters the surface of the substrate, the wire rod 103 may or may not be in contact with the coating liquid. The wire rod 103 mainly performs roller coating operations on the coating liquid on the surface of the substrate.

[0043] In an exemplary embodiment, as needed, the first telescopic unit 105 is fixed to the upright plate 101 by the first fixing part 104. The first telescopic unit 105 is, for example, a rotary telescopic component, and a first telescopic unit 105 is provided at both ends of the baffle plate 102.

[0044] In one exemplary embodiment, the first telescopic unit 105 is provided at both ends of the liquid baffle 102 to ensure that the gap between the bottom of the liquid baffle 102 and the surface of the substrate is consistent, thereby ensuring that the amount of coating liquid on the surface of the substrate is consistent.

[0045] In one exemplary embodiment, the length of the baffle 102 is matched with the length of the bar 103, for example, the length of the baffle 102 is sufficient for the coating operation of the bar 103 on the substrate surface.

[0046] In one exemplary embodiment, when the liquid baffle 102 is performing a coating operation, the gap between the lower edge of the liquid baffle 102 and the wire bar 103 is between 5 and 10 mm.

[0047] In one exemplary embodiment, the doctor blade coating mechanism of this application further includes a bar extrusion pressure adjustment unit.

[0048] In one exemplary embodiment, the bar extrusion pressure adjustment unit is disposed on the upright plate 101 to adjust the extrusion pressure of the bar 103 on the substrate during coating; because the bar 103 ensures that there is a downward extrusion pressure when the substrate is coated, the bar 103 maintains consistent contact with the substrate surface.

[0049] In one exemplary embodiment, the bar extrusion pressure adjusting unit includes: a second telescopic unit 111, such as... Figure 3 As shown, there are two second telescopic units 111, that is, each upright plate 101 is matched with one second telescopic unit 111.

[0050] In one exemplary embodiment, the second telescopic unit 111 is fixed to the upright plate 101 and is used to adjust the extrusion pressure on the substrate during coating of the wire rod 103.

[0051] In one exemplary embodiment, the second telescopic unit 111 is fixed to the upright plate 101 by the second fixing part 110. The second telescopic unit 111 is disposed on the second fixing part 110, which is disposed above the rod 103.

[0052] In one exemplary embodiment, the second telescopic unit 111 contacts the outer side of the bearing 115. Since the bearing 115 is sleeved on the shaft of the bar 103, when the second telescopic unit 111 presses downward on the outer side of the bearing 115, the bar 103 is less likely to jump up during roller coating, resulting in uneven coating on the substrate surface, thus ensuring the consistency of the coating liquid amount on the substrate surface.

[0053] In one exemplary embodiment, the second telescopic unit 111 may be a nut screw, as needed.

[0054] In one exemplary embodiment, as needed, a wire rod fixing screw 112 is connected to the shaft of the wire rod 103. The wire rod fixing screw is used to extend the shaft of the wire rod 103. A bearing 115 is also sleeved on the wire rod fixing screw 112. The second telescopic unit 111 can control the downward pressing force of the wire rod 103 by pressing the bearing 115 on the wire rod fixing screw 112 downward. That is, the second telescopic unit 111 can adjust the pressing force of the wire rod 103 on the substrate when coating by adjusting the pressing force of the bearing 115.

[0055] In one exemplary embodiment, the blade coating mechanism of this application further includes a blade 107.

[0056] In one exemplary embodiment, a scraper 107 is disposed between two upright plates 101, and the scraper 107 and the baffle plate 102 are arranged on both sides of the line bar 103 as needed.

[0057] In one exemplary embodiment, the scraper 107 is used to scrape the substrate after it has been coated by the wire rod 103; it can be understood that, as needed, the substrate surface is roller coated by the wire rod 103 and then the coating liquid on the substrate surface is scraped by the scraper 107.

[0058] In one exemplary embodiment, a fixing plate 109 is provided between two upright plates 101, and a scraper 107 is fixed on the fixing plate 109.

[0059] In one exemplary embodiment, a third telescopic unit 108 is provided on the fixing plate 109. The third telescopic unit 108 is connected to the scraper 107 and is used to adjust the gap size between the scraper 107 and the substrate.

[0060] In one exemplary embodiment, the third telescopic unit 108 is, for example, a micrometer, and a micrometer is provided at both ends of the scraper 107 as needed; that is, the micrometer is rotated to adjust the gap size between the scraper 107 and the upper surface of the substrate.

[0061] In one exemplary embodiment, the third telescopic unit 108 is connected to the scraper 107 via a magnetic attraction part 113.

[0062] In one exemplary embodiment, a coupling 114 is further provided between the third telescopic unit 108 and the magnetic suction part 113.

[0063] In an exemplary embodiment, when the doctor blade coating mechanism of this application is used, the doctor blade coating mechanism is first placed on the surface of the substrate to be coated, and then the coating liquid is placed in the coating liquid receiving area, that is, the coating liquid is placed between the wire bar 103 and the liquid baffle 102; the wire bar 103 performs roller coating operation on the coating liquid that has leaked onto the substrate surface by moving forward; when the doctor blade 107 is needed, the gap size between the doctor blade 107 and the substrate surface is controlled to scrape the coating liquid on the substrate surface.

[0064] In an exemplary embodiment, when the doctor blade 107 and the wire bar 103 need to work simultaneously, the gap between the doctor blade 107 and the substrate surface is smaller than the gap between the wire bar 103 and the substrate surface.

[0065] 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 bar, wherein each end of the bar is connected to a vertical plate; A liquid baffle is disposed between the two vertical plates and is movable up and down on the side of the wire rod. A liquid baffle adjustment unit is used to connect the vertical plate and the liquid baffle, and the liquid baffle adjustment unit is used to adjust the gap size between the liquid baffle and the substrate; The length of the baffle plate is matched with the length of the wire rod; A coating liquid receiving area is provided between the bar and the baffle plate. When the bar rotates, the coating liquid that leaks from the gap between the baffle plate and the bar onto the surface of the substrate is used for roller coating.

2. The doctor blade coating mechanism according to claim 1, wherein The baffle adjustment unit includes: The first telescopic unit has a housing connected to the upright plate and a telescopic rod connected to the baffle plate. The first telescopic unit is used to control the gap size between the liquid baffle and the substrate.

3. The doctor blade coating mechanism of claim 1, wherein, It also includes: A bar extrusion pressure adjustment unit is disposed on the vertical plate and is used to adjust the extrusion pressure on the substrate during bar coating.

4. The doctor blade coating mechanism according to claim 3, wherein Both of the two upright plates are provided with limiting grooves on their opposing sides; The bar is movable up and down within the limiting groove; The bar extrusion pressure adjustment unit includes: The second telescopic unit, fixed to the upright plate, is used to adjust the extrusion pressure on the substrate during the bar coating process.

5. The doctor blade coating mechanism according to claim 4, wherein The bar is connected to the vertical plate via a bearing; The second telescopic unit adjusts the extrusion pressure on the substrate during bar coating by adjusting the extrusion pressure on the bearing.

6. The doctor blade coating mechanism of claim 1, wherein, It also includes: A scraper, wherein the scraper is disposed between the two upright plates; The scraper is used to scrape and coat the substrate after it has been coated with the wire rod.

7. The doctor blade coating mechanism according to claim 6, characterized in that, A fixing plate is provided between the two upright plates, and a third telescopic unit is provided on the fixing plate; The third telescopic unit is connected to the scraper and is used to adjust the gap between the scraper and the substrate.

8. The doctor blade coating mechanism according to claim 7, characterized in that, The third telescopic unit is connected to the scraper via a magnetic attraction part.

9. The doctor blade coating mechanism of claim 8, wherein, A coupling is also provided between the third telescopic unit and the magnetic suction part.

10. The doctor blade coating mechanism of claim 6, wherein, The scraper and the baffle are located on opposite sides of the wire rod.

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