A coating trough

Abstract

The utility model discloses a kind of coating material grooves, it is characterized in that, including trough, coating roller and compression roller, coating roller lower part is immersed in trough, and be located below paint liquid level, coating roller upper part is higher than trough, compression roller is located above coating roller;Trough has four side walls in outer periphery, are two opposite long trough walls and two opposite short trough walls, long trough wall is set along the length direction of coating roller axis, one side long trough wall is provided with three feed ports, the other side long trough wall is provided with discharge port;Wherein one feed port is located in the middle position of long trough wall, other two feed ports are respectively close to the both ends of long trough wall.The utility model has from supply, filter to multiple links such as metering, synergistically optimizes, and uniformly improves the uniformity of coating quality, stability and the effect of cleanliness systematically.

Description

Technical Field

[0001] This utility model relates to the technical field of coating machines, and more specifically, to a coating material tank. Background Technology

[0002] A coating trough is typically a container-like structure used to store and supply coating material to a coating roller. Its basic components include a trough containing the coating material, a coating roller partially immersed in the trough, and a pressure roller that applies pressure to the substrate. During operation, the coating roller carries the coating material from the trough to its surface as it rotates, and then transfers the coating material onto the substrate at the pressure zone formed with the pressure roller.

[0003] Existing coating tank fluid designs have significant limitations. They typically employ a single feed inlet, making it difficult to establish a uniform and stable coating supply across a wide roller surface. Furthermore, replenishment is usually done by adding material after use, when the liquid level drops, without any circulation. The continuous evaporation of the coating solvent causes viscosity changes, resulting in a difference in coating concentration between the input and the material in the tank, further exacerbating the challenge of controlling the transverse uniformity of the coating. Therefore, a new solution is needed to address this problem. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a coating tank that has the effect of synergistic optimization of multiple links from feeding, filtering to metering, and systematically improves the uniformity, stability and cleanliness of coating quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a coating trough, comprising a trough, a coating roller, and a pressure roller, wherein the lower part of the coating roller is immersed in the trough and located below the coating liquid surface, the upper part of the coating roller is higher than the trough, and the pressure roller is located above the coating roller; the outer periphery of the trough has four side walls, namely two opposing long trough walls and two opposing short trough walls, the long trough walls are arranged along the length direction of the coating roller axis, one side of the long trough wall has three inlets, and the other side of the long trough wall has an outlet; one of the inlets is located in the middle of the long trough wall, and the other two inlets are located near the two ends of the long trough wall.

[0006] By adopting the above scheme, three feed ports (one in the middle and one at each end) are set on one side of the long feed trough wall along the axis of the coating roller, so as to achieve uniform distribution and stable supply of coating in the width direction of the feed trough. This effectively overcomes the problem of uneven coating distribution caused by the traditional single feed port and improves the lateral uniformity of coating. At the same time, a discharge port is set on the other side of the long feed trough wall, which together with the multiple feed ports forms an efficient coating path, which is conducive to maintaining the uniformity and stability of coating composition and viscosity.

[0007] The present invention is further provided that a baffle is provided in the material trough, and the baffle divides the material trough into a paint chamber and a waste chamber.

[0008] By adopting the above scheme, the physical separation of fresh coating and recycle coating is achieved, effectively avoiding the direct interference of bubbles, impurities or materials with local viscosity changes contained in the used coating on the uniform coating of the coating roller; the coating chamber can continuously provide a stable and clean coating supply to the coating roller, while the waste chamber is specifically responsible for collecting and temporarily storing the excess coating that flows back from the surface of the coating roller.

[0009] The present invention is further configured such that the top height of the baffle is lower than the top height of the trough, and the vertical height of the discharge port is lower than the top height of the baffle.

[0010] By adopting the above scheme, the low height design of the baffle allows the coating chamber to maintain a liquid level higher than that of the waste chamber, forming a directional liquid flow pointing towards the waste chamber, effectively preventing the backflow of pollutants.

[0011] The present invention is further configured such that a filter plate is slidably installed on the side of the baffle near the waste chamber for filtering the coating.

[0012] By adopting the above solution, dynamic filtration of the returned coating is achieved, which can effectively intercept and remove impurities such as fibers and gel particles carried in the coating returned from the coating roller, preventing them from affecting the coating surface quality when they re-enter the coating chamber. At the same time, the sliding installation method makes the disassembly, cleaning and maintenance of the filter plate extremely simple and can be completed quickly without interrupting production.

[0013] The present invention is further configured such that sliders are fixedly provided at both ends of the filter plate, the two sides of the baffle are fixedly connected to the walls of the short material troughs respectively, and vertical grooves are respectively opened on the opposite side of the two short material troughs. The sliders are embedded and confined in the corresponding grooves, and the filter plate can slide vertically along the grooves.

[0014] By adopting the above solution, operators can flexibly adjust the immersion depth of the filter plate in the coating according to the actual viscosity and impurity content of the coating, thereby controlling the effective filtration area. This ensures excellent filtration effect while avoiding increased flow resistance due to excessive filtration area. The vertical sliding structure facilitates quick lifting, disassembly, and cleaning of the filter plate, simplifying the maintenance process.

[0015] The present invention is further configured such that: a plurality of protrusions 2 are fixedly connected to the side of the filter plate facing the baffle, and each protrusion 2 is evenly arranged along the width direction of the filter plate; a plurality of protrusions 1 are fixedly connected to the side of the baffle facing the filter plate, and each protrusion 1 is evenly arranged along the width direction of the baffle; the shapes of the protrusions 1 and 2 are adapted to each other, and the protrusions 1 and 2 are interlocked to form a filter gap in the protrusions 1 and 2.

[0016] By adopting the above solution, the coating can be filtered, effectively trapping and removing tiny gel particles, fibers and other impurities, thus improving the purity of the coating. At the same time, the slit filtration mechanism effectively increases the filtration specific surface area, ensuring high-efficiency interception while effectively reducing flow resistance.

[0017] The present invention is further configured such that the cross-sections of the first protrusion and the second protrusion are both isosceles trapezoidal and are mutually compatible.

[0018] By adopting the above scheme, when installing the filter plate, the hypotenuse of the isosceles trapezoid can play a self-guiding role, ensuring that protrusion one and protrusion two are quickly aligned, effectively avoiding installation difficulties or uneven gaps caused by misalignment; after mating, its parallel two sides can form a stable and uniform slit gap, which not only ensures the consistency of the filtration effect, but also improves assembly efficiency and reliability.

[0019] The present invention is further configured such that the first protrusion has a continuous strip-like structure in the vertical direction, and the second protrusion is divided into several segments distributed at intervals in the vertical direction.

[0020] By adopting the above scheme, when the second protrusion makes a small reciprocating motion under the drive, the relative shearing action between each independent module will be generated, thereby automatically scraping and removing the gel particles and skin impurities attached to both sides of the filter gap. This dynamic self-cleaning mechanism can effectively prevent the filter gap from being blocked due to the accumulation of impurities.

[0021] The present invention is further configured such that a limiting roller is installed between the coating roller and the baffle, the axis of the limiting roller is parallel to the axis of the coating roller, and an adjustable slit is formed between the roller surface of the limiting roller and the coating roller.

[0022] By adopting the above solution, the thickness of the coating on the coating roller surface can be controlled and uniformly scraped by adjusting the slit distance between the limiting roller and the coating roller, ensuring that the coating is transferred to the substrate in a thin and uniform state; effectively avoiding the problems of dripping, splashing or uneven coating texture caused by excessive coating thickness, ensuring coating quality while optimizing coating utilization.

[0023] In summary, this utility model has the following beneficial effects:

[0024] 1. By setting three feed ports on the wall of the long feed trough along the axis of the coating roller, the coating material is uniformly and stably supplied on the wide roller surface, which effectively improves the problem of uneven transverse coating caused by the traditional single feed port.

[0025] 2. By setting a filter plate that can slide vertically on the side of the baffle and has special isosceles trapezoidal protrusions, dynamic precision filtration and self-cleaning functions for the coating are realized, effectively intercepting impurities and preventing the filter gaps from clogging.

[0026] 3. A limiting roller is added between the coating roller and the baffle. The amount of coating on the coating roller surface is precisely controlled by an adjustable slit to prevent dripping and uneven thickness caused by excessive coating. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of a coating tank in this embodiment 1;

[0028] Figure 2 This is a perspective view of a coating tank in Embodiment 1.

[0029] Figure 3 This is a cross-sectional view of a coating tank in Embodiment 2.

[0030] Figure 4 This is a top-view sectional view of the filter plate and baffle.

[0031] Figure 5 This is a 3D view of the filter plate and baffle.

[0032] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0033] Reference numerals: 1. Material tank; 101. Coating chamber; 102. Waste chamber; 103. Baffle; 104. Short material tank wall; 105. Long material tank wall; 106. Slide chute; 107. Coating liquid surface; 108. Protrusion 1; 2. Coating roller; 3. Pressure roller; 4. Inlet; 5. Outlet; 6. Coating; 7. Filter plate; 71. Slider; 72. Protrusion 2; 73. Filter gap; 8. Limiting roller. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1

[0036] This embodiment discloses a coating tank, referring to... Figures 1-2 As shown, the coating system includes a trough 1, a coating roller 2, and a pressure roller 3. The lower part of the coating roller 2 is immersed in the trough 1 and is located below the paint surface 107. The upper part of the coating roller 2 is higher than the trough 1, and the pressure roller 3 is located above the coating roller 2. In the actual coating process, the substrate 6 passes through the pressure zone between the coating roller 2 and the pressure roller 3. Pressure is applied by the pressure roller 3, while the coating roller 2 is responsible for uniformly coating the paint in the trough 1 onto the surface of the substrate 6.

[0037] The outer periphery of the material trough 1 has four side walls, namely two opposing long material trough walls 105 and two opposing short material trough walls 104. The long material trough walls 105 are arranged along the length direction of the axis of the coating roller 1.

[0038] To further optimize the uniformity of coating supply, the material trough 1 has three feed ports 4 on one side of the long material trough wall 105 along the axis of the coating roller 1. One feed port 4 is located in the middle of the long material trough wall 105, and the other two feed ports 4 are arranged near the two ends of the long material trough wall 105. The other side of the long material trough wall 105 has a discharge port 5 to discharge the coating. Because the concentration and viscosity of the solution in the upper part changes due to solvent evaporation, it is necessary to discharge this part of the coating to maintain the uniformity of the overall coating concentration and viscosity. The vertical height of the discharge port 5 is specially designed and should not be set too low. Its position should be about one centimeter below the top of the material trough 1.

[0039] By setting three feed ports 4 on one side of the long feed trough wall 105 along the axial direction of the coating roller 1 (one in the middle and one at each end), the coating material is uniformly distributed and stably supplied in the width direction of the feed trough. This effectively overcomes the problem of uneven coating distribution caused by traditional single feed ports. In particular, it can compensate for changes in composition and viscosity caused by solvent evaporation, thereby improving the lateral uniformity of coating.

[0040] Meanwhile, by setting the appropriate height of the discharge port 5, a stable and suitable paint level 107 can be maintained in the trough 1, allowing the coating roller 1 to evenly and fully pick up the paint in the immersion area. This avoids insufficient paint application due to excessively high or low paint levels. The combination of multi-point feeding and appropriate discharge design creates a smooth and efficient paint flow within the trough 1, facilitating the timely removal of used paint and replenishment with fresh paint. This effectively prevents localized paint stagnation, sedimentation, skinning, or viscosity changes, thereby improving the overall uniformity and stability of the coating quality.

[0041] Example 2

[0042] This embodiment discloses a coating tank, which is based on Embodiment 1 and further refers to... Figures 3-6 Please provide a detailed explanation.

[0043] In this embodiment, a baffle 103 is provided in the material tank 1, which divides the material tank 1 into a paint chamber 101 and a waste chamber 102. The top height of the baffle 103 is lower than the top height of the material tank 1, so that the paint liquid level 107 in the paint chamber 101 is higher than the paint liquid level 107 in the waste chamber 102, and higher than the feed inlet 4, forming a liquid level difference that is conducive to the directional flow of paint.

[0044] The height of the discharge port 5 is also specifically designed. The vertical height of the discharge port 5 is lower than the top height of the baffle 103, and the vertical height is higher than the liquid level in the waste chamber 102.

[0045] Reference Figure 3 As shown, a limiting roller 8 is installed between the coating roller 2 and the baffle 103. The axis of the limiting roller 8 is arranged parallel to the axis of the coating roller 2. An adjustable slit structure is formed between the roller surface of the limiting roller 8 and the coating roller 2. By moving the axis of the limiting roller 8 laterally, the distance between the roller surface of the limiting roller 8 and the coating roller 2 can be changed, thereby controlling the thickness of the coating on the surface of the coating roller 2 and scraping off excess coating on the surface of the coating roller 2, thus avoiding uneven coating or dripping caused by excessive coating adhesion.

[0046] A filter plate 7 is slidably installed on the side of the baffle 103 near the waste chamber 102. Several protrusions 72 are fixedly connected to the side of the filter plate 7 facing the baffle 103. Correspondingly, several protrusions 108 are fixedly connected to the side of the baffle 103 facing the filter plate 7. The protrusions 72 are evenly distributed along the width of the filter plate 7. The shapes of the protrusions 108 and 72 are mutually compatible, and they interlock to form filter gaps 73. This allows the coating to flow through the filter gaps 73 and effectively traps impurities such as gel particles and fiber clusters in the coating, achieving dynamic filtration of the coating. The width of the filter gaps 73 is generally less than 1 mm, preferably less than 0.5 mm, thereby achieving a stable flow-blocking filtration effect and separating large particles of impurities.

[0047] The upper edge of the filter plate 7 is higher than the upper side of the baffle 103, and the lower edge is higher than the lower side of the baffle 103, so that a gap is formed between the lower edge of the filter plate 7 and the bottom of the material trough 1.

[0048] Reference Figure 5As shown, protrusion 108 has a continuous strip-like structure in the vertical direction, while protrusion 2 72 is divided into several segments distributed at intervals in the vertical direction. The small reciprocating motion of protrusion 2 72 in the vertical direction can remove impurities attached to the surface. When protrusion 2 72 makes a small reciprocating motion under drive, a relative shearing action is generated between the independent modules, which can automatically scrape off and remove gel particles and crust impurities attached to both sides of the filter gap 73. This dynamic self-cleaning mechanism can effectively prevent the filter gap 73 from being blocked due to the accumulation of impurities and extend the continuous operation cycle.

[0049] Both protrusion 108 and protrusion 2 72 have isosceles trapezoidal cross-sections and are compatible with each other. When installing the filter plate 7, the hypotenuse of the isosceles trapezoid acts as a guide, ensuring that protrusion 108 and protrusion 2 72 are quickly aligned, effectively avoiding installation difficulties or uneven gaps caused by misalignment. After mating, their parallel sides form a stable and uniform filter gap 73, which not only ensures the consistency of the filtration effect but also improves assembly efficiency and reliability.

[0050] Reference Figure 4 As shown, sliders 71 are fixedly installed at both ends of the filter plate 7, and the two sides of the baffle 103 are fixedly connected to the short material trough wall 104 respectively. Vertical grooves 106 are opened on the opposite side of the two short material trough walls 104 respectively. The sliders 71 are embedded and confined in the corresponding grooves 106, and the filter plate 7 can slide vertically along the grooves.

[0051] Operators can flexibly adjust the immersion depth of filter plate 7 in the coating according to the actual viscosity and impurity content of the coating, thereby controlling the effective filtration area. This ensures excellent filtration effect while avoiding increased flow resistance due to excessive filtration area. The vertical sliding structure facilitates quick lifting, disassembly, and cleaning of filter plate 7, simplifying the maintenance process.

[0052] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A coating tank, characterized in that, It includes a material tank (1), a coating roller (2) and a pressure roller (3). The lower part of the coating roller (2) is immersed in the material tank (1) and is located below the coating liquid surface (107). The upper part of the coating roller (2) is higher than the material tank (1). The pressure roller (3) is located above the coating roller (2). The material trough (1) has four side walls on its outer periphery, namely two opposite long material trough walls (105) and two opposite short material trough walls (104). The long material trough walls (105) are arranged along the length direction of the coating roller (2) axis. One side of the long material trough wall (105) has three inlets (4) and the other side of the long material trough wall (105) has an outlet (5). One of the feed inlets (4) is located in the middle of the long material trough wall (105), and the other two feed inlets (4) are located near the two ends of the long material trough wall (105).

2. The coating tank according to claim 1, characterized in that, The material tank (1) is provided with a baffle (103), which divides the material tank (1) into a paint chamber (101) and a waste chamber (102).

3. A coating tank according to claim 2, characterized in that, The top height of the baffle (103) is lower than the top height of the trough (1), and the vertical height of the outlet (5) is lower than the top height of the baffle (103).

4. A coating tank according to claim 2, characterized in that, A filter plate (7) is slidably installed on the side of the baffle (103) near the waste chamber (102) for filtering the coating.

5. A coating tank according to claim 4, characterized in that, The filter plate (7) is fixedly provided with sliders (71) at both ends. The baffle (103) is fixedly connected to the short material trough wall (104) on both sides. The two short material trough walls (104) are respectively provided with vertical sliding grooves (106) on opposite sides. The sliders (71) are embedded and confined in the corresponding sliding grooves (106). The filter plate (7) can slide along the sliding groove in the vertical direction.

6. A coating tank according to claim 5, characterized in that, The filter plate (7) is fixedly connected to a plurality of protrusions 2 (72) on the side facing the baffle (103), and each protrusion 2 (72) is evenly arranged along the width direction of the filter plate (7); the baffle (103) is fixedly connected to a plurality of protrusions 1 (108) on the side facing the filter plate (7), and each protrusion 1 (108) is evenly arranged along the width direction of the baffle (103); the shapes of the protrusions 1 (108) and protrusions 2 (72) are adapted to each other, and the protrusions 1 (108) and protrusions 2 (72) are interlocked to form a filter gap (73) in the protrusions 1 (108) and protrusions 2 (72).

7. A coating tank according to claim 6, characterized in that, The cross-sections of both the first protrusion (108) and the second protrusion (72) are isosceles trapezoidal and are compatible with each other.

8. A coating tank according to claim 6, characterized in that, The first protrusion (108) has a continuous strip structure in the vertical direction, and the second protrusion (72) is divided into several segments with intervals in the vertical direction.

9. A coating tank according to claim 1, characterized in that, A limiting roller (8) is installed between the coating roller (2) and the baffle (103). The axis of the limiting roller (8) is parallel to the axis of the coating roller (2), and an adjustable slit is formed between the roller surface of the limiting roller (8) and the coating roller (2).

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