Vertical multi-roller double-side extrusion coating slurry pulling and coating device
The vertical multi-roller double-sided extrusion coating device solves the problems of coating bubbles and uneven thickness, achieving uniformity and density of the coating, and improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI YUTENG IND
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing biaxial slurry coating process, air bubbles are easily mixed into the coating, which weakens the adhesion, results in uneven coating thickness, and affects product quality and production efficiency.
A vertical multi-pair roller double-sided extrusion coating device is adopted. The air bubbles in the slurry are discharged by the extrusion action of the guide roller and the first pair of rollers. The uniformity of coating thickness and flatness are ensured by the cooperation of high chromium alloy and fluororubber rollers.
It effectively reduces bubbles in the coating, improves coating uniformity and density, enhances product reliability and service life, and shortens the production cycle.
Smart Images
Figure CN224167836U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of slurry coating technology and relates to a vertical multi-pair roller double-sided extrusion coating slurry coating device. Background Technology
[0002] In modern industrial production, surface coating processes for materials such as metal mesh, films, and paper are crucial for improving product performance and increasing added value. Among these, biaxial slurry coating is an important surface treatment technology due to its ability to significantly improve the surface properties of materials. However, despite its numerous advantages, existing technologies still face several challenges during the coating process, which severely restrict improvements in product quality and production efficiency.
[0003] During the coating process, air can easily get trapped in the slurry, forming bubbles. These bubbles leave voids after the coating cures, weakening the bond between the coating and the substrate and even causing the coating to peel off. Furthermore, it is difficult to control the uniformity of the coating thickness; this unevenness not only affects product performance but may also increase production costs and scrap rates.
[0004] In summary, there is an urgent need to develop a coating device that can improve the coating uniformity of the bi-stretch coating process and reduce the air content in the coating, so as to solve the problems existing in the current technology and improve production efficiency and quality. Utility Model Content
[0005] The purpose of this invention is to provide a vertical multi-roller double-sided extrusion coating device to solve the technical problems of air bubbles and poor thickness uniformity in the base coat coating obtained by the existing coating process.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] This utility model provides a vertical multi-pair roller double-sided extrusion coating device, including a magnetic powder brake, an unwinding mechanism, a slurry tank, and a coating tank. The slurry tank contains slurry, which is transported to the coating tank through a pipeline. A reversing roller is installed at the top of one side of the coating tank. The magnetic powder brake is connected to the unwinding mechanism and is used to transport the uncoated base strip to the coating tank through the reversing roller for coating. A guide roller is installed at the bottom of the coating tank. A second pair of rollers and a first pair of rollers are arranged sequentially above the guide rollers. Both the second pair of rollers and the first pair of rollers are located above the coating tank.
[0008] Furthermore, a coating thickness detection device is installed above the first pair of rollers.
[0009] Furthermore, a ball valve is installed at the bottom of one side of the slurry coating tank.
[0010] Furthermore, a baseband lap welding device is provided between the unwinding mechanism and the reversing roller for welding the baseband.
[0011] Furthermore, a tension detection device is provided between the baseband overlap welding device and the reversing roller to detect the transmission tension of the baseband.
[0012] Furthermore, a slurry supply pump is installed on the pipeline between the slurry tank and the slurry coating tank.
[0013] Furthermore, a flow regulating valve is installed on the pipeline between the slurry supply pump and the slurry coating tank.
[0014] Furthermore, a liquid level detection device is installed inside the slurry coating tank; both the liquid level detection device and the flow regulating valve are connected to the liquid level regulating device.
[0015] Furthermore, the first pair of rollers is a high-chromium alloy roller.
[0016] Furthermore, the second pair of rollers is a fluororubber roller.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] This invention discloses a vertical multi-pair roller double-sided extrusion coating device. The uncoated base strip is unwound and enters the coating tank via a reversing roller to obtain a coated base strip. Guide rollers then move vertically upwards, first being extruded by a second pair of rollers to fully fill the gaps in the wire mesh and expel air. The first pair of rollers then further compresses the slurry to ensure the coating thickness and flatness. The design of the coating tank allows for full contact between the slurry and the base strip, increasing the coating speed and shortening the production cycle. This invention reduces the formation of air bubbles in the coating, improves coating uniformity, and thus enhances the density and overall quality of the coating, increasing product reliability and service life.
[0019] Furthermore, this utility model is equipped with a slurry pump, a flow regulating valve, a liquid level detection device, and a liquid level regulating device on the conveying pipeline of the slurry tank and the slurry coating tank. By detecting the liquid level in the slurry coating tank and adjusting the flow regulating valve, the liquid level in the slurry coating tank can be controlled at a reasonable height, ensuring the continuity and efficiency of the coating work, while also allowing the slurry to fully contact the baseband. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0022] The components are: 1. Magnetic powder brake; 2. Unwinding mechanism; 3. Base strip overlap welding device; 4. Tension detection device; 5. Slurry tank; 6. Slurry; 7. Slurry supply pump; 8. Flow regulating valve; 9. Liquid level detection device; 10. Liquid level regulating device; 11. Slurry coating base strip; 12. Coating thickness detection device; 13. First pair of rollers; 14. Second pair of rollers; 15. Guide roller; 16. Slurry coating tank; 17. Ball valve; 18. Reversing roller; 19. Uncoated base strip. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0026] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] The present invention will now be described in further detail with reference to the accompanying drawings:
[0030] See Figure 1This utility model discloses a vertical multi-pair roller double-sided extrusion coating device, characterized in that it includes a magnetic powder brake 1, an unwinding mechanism 2, a slurry tank 5, and a coating tank 16; the slurry tank 5 contains slurry 6, which is transported to the coating tank 16 through a pipeline; a reversing roller 18 is installed at the top of one side of the coating tank 16; the magnetic powder brake 1 is connected to the unwinding mechanism 2 and is used to transport the uncoated base strip 19 to the coating tank 16 for coating through the reversing roller 18; a guide roller 15 is installed at the bottom of the coating tank 16; above the guide roller 15, a second pair of rollers 14 and a first pair of rollers 13 are arranged sequentially from bottom to top; both the second pair of rollers 14 and the first pair of rollers 13 are located above the coating tank 16. In this embodiment, the uncoated baseband 19 is unwound by the self-unwinding mechanism 2 and enters the slurry coating tank 16 via the reversing roller 18 for coating, resulting in a slurry-coated baseband 11. The baseband then moves vertically upwards via the guide roller 15, first being squeezed by the second pair of rollers 14 to fully fill the gaps in the wire mesh and expel air from the slurry. Then, it is squeezed by the first pair of rollers 13 to ensure the thickness and flatness of the coating layer. Simultaneously, the design of the slurry coating tank 16 allows the slurry to fully contact the baseband, increasing the coating speed and further shortening the production cycle. This invention reduces the generation of air bubbles in the coating, improves the uniformity of the coating, thereby improving the density and overall quality of the coating, and enhancing the reliability and service life of the product.
[0031] In one feasible embodiment of this utility model, a coating thickness detection device 12 is installed above the first pair of rollers 13, which can measure the coating thickness and ensure the consistency of coating thickness and quality. A ball valve 17 is installed at the bottom of one side of the slurry coating tank 16.
[0032] In one feasible embodiment of this utility model, a base belt overlap welding device 3 is provided between the unwinding mechanism 2 and the reversing roller 18 for welding the base belt, ensuring the connection of the base belt interface for slurry coating, and ensuring continuous operation of the equipment. A tension detection device 4 is provided between the base belt overlap welding device 3 and the reversing roller 18 for detecting the transmission tension of the base belt. The unwinding and winding speed can be adjusted according to the transmission tension to ensure stable operation and stable slurry coating quality.
[0033] In one feasible embodiment of this utility model, a slurry pump 7 and a flow regulating valve 8 are sequentially installed on the pipeline between the slurry tank 5 and the slurry coating tank 16. A liquid level detection device 9 is installed inside the slurry coating tank 16; both the liquid level detection device 9 and the flow regulating valve 8 are connected to a liquid level regulating device 10. In this embodiment, by detecting the liquid level in the slurry coating tank 16 and adjusting the flow regulating valve 8, the liquid level in the slurry coating tank 16 can be controlled at a reasonable height, ensuring the continuity and efficiency of the coating work, while also allowing the slurry to fully contact the baseband. Specifically, the flow regulating valve 8 can preferably be a ZDLP-16C / P electric regulating valve; the liquid level detection device 9 can preferably be an MLS-750 liquid level sensor; and the liquid level regulating device 10 can preferably be a YR-GAD series regulator.
[0034] In one feasible embodiment of this invention, the first pair of rollers 13 is preferably a high-chromium alloy roller. High-chromium alloys possess excellent strength and toughness. During the extrusion coating process, the rollers need to withstand significant pressure and stress to ensure that the slurry adheres evenly to the substrate. The high strength of the high-chromium alloy rollers allows them to stably withstand these pressures without easily deforming or being damaged, thus ensuring the stability and consistency of the coating process. The second pair of rollers 14 is preferably a fluororubber roller. Fluororubber has excellent flexibility and elasticity. The second pair of rollers 14 mainly serves to further compact and homogenize the coating during the coating process. Using fluororubber rollers, their flexibility can better adapt to the surface shape of the substrate and the thickness variations of the coating, allowing for more uniform pressure application during extrusion, resulting in a denser and smoother coating, reducing surface defects such as bubbles and pinholes, thereby significantly optimizing the coating quality.
[0035] The working process / working principle of this utility model is as follows:
[0036] The base strip 11 of the slurry coating material is conveyed to the slurry coating tank 16 by the unwinding mechanism 2 for coating. The slurry 6 stored in the slurry tank 5 is a micron-sized stainless steel slurry, which is stirred during the process. The stirring cycle is 40 minutes, the viscosity of the stirred slurry is 1500 mp.s, and the solid content is 65%. The base strip 11 of the slurry coating material is coated in the slurry coating tank 16. The coated base strip is conveyed to the fluororubber rollers (second rollers 14) by the guide rollers 15 to extrude the gas in the slurry coating. At the same time, the roller pressure fills the voids in the stainless steel with slurry, ensuring that the coating slurry is dense, uniform and without voids. Then it passes through the high chromium alloy rollers (first rollers 13). The high chromium alloy rollers have high hardness and wear resistance, and are suitable for working environments that withstand high pressure and require high precision processing. Finally, the slurry coating material base strip 11 with a coating thickness of 0.65±0.05mm is output.
[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A vertical multi-roller double-sided extrusion coating device, characterized in that, The system includes a magnetic powder brake (1), an unwinding mechanism (2), a slurry tank (5), and a slurry coating tank (16). The slurry tank (5) contains slurry (6), which is transported to the slurry coating tank (16) through a pipeline. A reversing roller (18) is installed at the top of one side of the slurry coating tank (16). The magnetic powder brake (1) is connected to the unwinding mechanism (2) and is used to transport the uncoated base tape (19) to the slurry coating tank (16) for coating through the reversing roller (18). A guide roller (15) is installed at the bottom of the slurry coating tank (16). A second pair of rollers (14) and a first pair of rollers (13) are arranged in sequence above the guide rollers (15). The second pair of rollers (14) and the first pair of rollers (13) are both located above the slurry coating tank (16).
2. The vertical multi-roller double-sided extrusion coating device according to claim 1, characterized in that, A coating thickness detection device (12) is installed above the first pair of rollers (13).
3. The vertical multi-roller double-sided extrusion coating device according to claim 1, characterized in that, A ball valve (17) is installed at the bottom of one side of the slurry coating tank (16).
4. The vertical multi-roller double-sided extrusion coating device according to claim 1, characterized in that, A baseband lap welding device (3) is provided between the unwinding mechanism (2) and the reversing roller (18) for welding the baseband.
5. A vertical multi-roller double-sided extrusion coating device according to claim 4, characterized in that, A tension detection device (4) is provided between the baseband lap welding device (3) and the reversing roller (18) to detect the transmission tension of the baseband.
6. A vertical multi-roller double-sided extrusion coating device according to claim 1, characterized in that, A slurry pump (7) is installed on the pipeline between the slurry tank (5) and the slurry coating tank (16).
7. A vertical multi-roller double-sided extrusion coating device according to claim 6, characterized in that, A flow regulating valve (8) is installed on the pipeline between the slurry pump (7) and the slurry coating tank (16).
8. A vertical multi-roller double-sided extrusion coating device according to claim 7, characterized in that, The slurry coating tank (16) is equipped with a liquid level detection device (9); the liquid level detection device (9) and the flow regulating valve (8) are both connected to the liquid level regulating device (10).
9. A vertical multi-roller double-sided extrusion coating device according to claim 1, characterized in that, The first pair of rollers (13) is a high-chromium alloy pair of rollers.
10. A vertical multi-roller double-sided extrusion coating device according to claim 1, characterized in that, The second pair of rollers (14) is a fluororubber pair of rollers.