A coating device

Abstract

The utility model belongs to the field of coating technology discloses a kind of coating devices. The coating device includes base, air float plate, displacement component, tool bit, detection piece and control component, air float plate is horizontally arranged above base, for supporting base material, displacement component is installed on base, the output end of displacement component is connected with tool bit, for driving tool bit linear reciprocating movement along the upper air float plate, detection piece is fixedly installed on base, and it is located the starting end side of air float plate, for detecting the contact pressure of tool bit to base material, the signal input end of control component is electrically connected with detection piece, the control output end of control component is electrically connected with displacement component, displacement component can drive tool bit to move up and down along the direction perpendicular to air float plate under the control of control component. To solve the problem of poor coating uniformity caused by inaccurate coating contact pressure detection and untimely adjustment in the prior art, improve coating uniformity and base material coating quality.

Description

Technical Field

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

[0002] Coating technology, as a key process in modern manufacturing, has important applications in fields such as new energy batteries, optical thin films, and flexible electronics. In lithium battery manufacturing, the uniformity of electrode coating directly affects the battery's energy density and cycle life; in the field of optical thin films, coating uniformity is related to the product's optical performance indicators.

[0003] Currently, common coating equipment typically uses displacement components to drive the cutting head for coating operations. However, in practical applications, operators often struggle to accurately control the actual contact pressure between the cutting head and the substrate. This leads to coating process parameter settings relying heavily on experience, hindering precise control. Particularly in the initial coating stage, the initial pressure state of the cutting head directly impacts the stability of the coating quality. Existing technologies sometimes attempt to estimate coating pressure indirectly, but these methods suffer from insufficient detection accuracy and slow response times. Utility Model Content

[0004] The purpose of this invention is to provide a coating device to solve the problem of poor coating uniformity caused by inaccurate detection and untimely adjustment of coating contact pressure in the prior art, thereby improving coating uniformity and substrate coating quality.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A coating apparatus includes a base, an air flotation plate, a displacement assembly, a cutting head, a detection element, and a control assembly. The air flotation plate is horizontally disposed above the base to support a substrate. The displacement assembly is mounted on the base, and its output end is connected to the cutting head to drive the cutting head to move linearly reciprocally above the air flotation plate. The detection element is fixedly mounted on the base and located on one side of the starting end of the air flotation plate to detect the contact pressure of the cutting head on the substrate. The signal input end of the control assembly is electrically connected to the detection element, and the control output end of the control assembly is electrically connected to the displacement assembly. Under the control of the control assembly, the displacement assembly can drive the cutting head to move up and down in a direction perpendicular to the air flotation plate.

[0007] As an alternative to the coating device, the air flotation plate is provided with a first air channel and a second air channel that are respectively connected to an external air source. The air outlets of the first air channel and the second air channel are both opened on the mounting surface of the air flotation plate opposite to the base. The first air channel is used to transmit positive pressure airflow, and the second air channel is used to transmit negative pressure airflow.

[0008] As an alternative to the coating apparatus, the detection element is a pressure sensor.

[0009] As an alternative to the coating apparatus, the displacement assembly includes a horizontal displacement mechanism connected to the base, which can be any one of a cylinder, an electric push rod, a linear slide rail, or a linear module.

[0010] As an alternative to the coating apparatus, the displacement assembly further includes a vertical displacement mechanism connected to the output end of the horizontal displacement mechanism. The output end of the vertical displacement mechanism is connected to the cutter head. The vertical displacement mechanism can be any one of a cylinder, an electric push rod, a linear slide rail, or a linear module.

[0011] As an alternative to the coating apparatus, the coating apparatus further includes a cleaning component located on one side of the starting end of the air flotation plate. The cleaning component includes a drive unit and a roller. The drive unit is fixedly connected to the base, and the output end of the drive unit is connected to the roller. The outer surface of the roller is coated with cleaning agent for cleaning the blade head.

[0012] As an alternative to the coating apparatus, the cleaning assembly also includes a scraper connected to the base and arranged along the axial direction of the roller, the scraper rolling against the outer surface of the roller.

[0013] As an alternative to the coating apparatus, the cleaning component also includes a receiving trough connected to the base and spaced apart from the roller, for receiving waste adhesive scraped off by the scraper.

[0014] As an alternative to the coating apparatus, the cleaning assembly also includes a liquid control tank mounted on the base and located between the detection element and the roller.

[0015] As an alternative to the coating apparatus, the bottom of the liquid control tank is provided with a drain port for discharging the cleaning agent dripping from the blade.

[0016] Beneficial effects:

[0017] This invention provides a coating device in which an air-float plate provides a stable support platform for the substrate, ensuring the flatness of the coating operation base. A detection element located at the coating start end accurately measures the initial contact pressure between the cutter head and the detection element before the coating operation begins. The control component adjusts the displacement component in real time based on the detection signal, ensuring the cutter head reaches the preset optimal working position. This structural design achieves precise calibration and pre-adjustment of the contact pressure before coating, effectively overcoming the problems of inaccurate initial contact pressure settings and reliance on manual adjustment in traditional coating devices. It ensures that the coating operation is in the optimal pressure state from the initial stage, providing a reliable process benchmark for subsequent continuous coating, thereby improving the overall stability of the coating process and the consistency of the product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the coating device provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the cleaning mechanism provided in an embodiment of the present invention.

[0020] In the picture:

[0021] 1. Base; 2. Air-float plate; 3. Displacement assembly; 4. Cutting head;

[0022] 5. Cleaning components; 51. Roller; 52. Scraper; 53. Receiving trough; 54. Liquid control trough; 55. Drain outlet. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] This embodiment provides a coating device, such as... Figure 1 and Figure 2 As shown, the coating apparatus includes a base 1, an air flotation plate 2, a displacement assembly 3, a cutter head 4, a detection element, and a control assembly. The air flotation plate 2 is horizontally positioned above the base 1 to support the substrate. The displacement assembly 3 is mounted on the base 1, and its output end is connected to the cutter head 4 to drive the cutter head 4 to move linearly back and forth above the air flotation plate 2. The detection element is fixedly mounted on the base 1 and located on one side of the starting end of the air flotation plate 2 to detect the contact pressure of the cutter head 4 on the substrate. The signal input end of the control assembly is electrically connected to the detection element, and the control output end of the control assembly is electrically connected to the displacement assembly 3. Under the control of the control assembly, the displacement assembly 3 can drive the cutter head 4 to move up and down in a direction perpendicular to the air flotation plate 2.

[0028] The air-float plate 2 provides a stable support platform for the substrate, ensuring the flatness of the base for coating operations. A detection element located at the coating start point accurately measures the initial contact pressure between the cutter head 4 and the detection element before coating begins. The control component adjusts the displacement component 3 in real time based on the detection signal, ensuring the cutter head 4 reaches the preset optimal working position. This structural design achieves precise calibration and pre-adjustment of the contact pressure before coating, effectively overcoming the problems of inaccurate initial pressure settings and reliance on manual adjustment in traditional coating devices. It ensures that the coating operation is in the optimal pressure state from the initial stage, providing a reliable process benchmark for subsequent continuous coating, thereby improving the overall stability of the coating process and the consistency of the product.

[0029] The control components include a controller, a signal processing unit, a displacement control interface module, a parameter storage and setting unit, and a power supply. During operation, the detection element transmits the pressure signal to the signal processing unit, which amplifies, filters, and converts the signal to digital before sending it to the controller. The controller compares the real-time pressure with the preset value, calculates and generates an adjustment command, which drives the displacement component 3 to adjust the position of the cutter head 4 through the displacement control interface module. The parameter storage and setting unit can set process parameters, and the power supply ensures a stable power supply, forming a closed-loop control to ensure stable coating pressure.

[0030] In this embodiment, the detection element is a pressure sensor. The pressure sensor utilizes its high precision and high sensitivity to accurately collect the contact pressure between the cutter head 4 and the detection element. After signal processing and transmission, the signal is fed back to the control component, which then quickly and accurately adjusts the displacement component 3 to ensure that the cutter head 4 is in the optimal working position. This significantly improves the contact pressure control accuracy and coating process stability, reduces coating quality defects caused by uneven contact pressure, and increases product yield.

[0031] The sensor can be a strain gauge pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, or a piezoresistive pressure sensor. A strain gauge pressure sensor measures pressure by changing the resistance value of a strain gauge through deformation. A piezoresistive pressure sensor, based on the piezoresistive effect, uses the change in resistance of a semiconductor material with pressure to achieve pressure detection. A capacitive pressure sensor relies on pressure to change the spacing or area of ​​the capacitor plates, resulting in a change in capacitance value to reflect the pressure magnitude. A piezoelectric pressure sensor uses the piezoelectric effect of a crystal material to convert pressure into an electric charge signal for measurement.

[0032] In this embodiment, the air flotation plate 2 is provided with a first air channel and a second air channel respectively connected to an external air source. The air outlets of the first and second air channels are both located on the mounting surfaces of the air flotation plate 2 opposite to the base 1. The first air channel is used to transmit positive pressure airflow, and the second air channel is used to transmit negative pressure airflow. The first air channel in the air flotation plate 2 ejects positive pressure airflow, forming a suspended air film between the air flotation plate 2 and the substrate, keeping the substrate in a non-contact suspended state and avoiding damage and deformation to the substrate surface. The second air channel generates negative pressure airflow, which, together with the weight of the substrate, applies a downward pulling force to the suspended substrate. This pulling force and the positive pressure support form a dynamic balance, stably constraining the substrate at a fixed height above the air flotation plate 2, preventing it from shifting or shaking due to external interference. The synergistic effect of both ensures the stability of the substrate suspension and counteracts the reaction force generated by the blade 4 during coating, maintaining a stable distance between the blade 4 and the substrate, thereby significantly improving coating accuracy and uniformity. It can also be compatible with substrates of different materials and thicknesses by adjusting the pressure ratio.

[0033] In this embodiment, the displacement component 3 includes a horizontal displacement mechanism connected to the base 1. The horizontal displacement mechanism can be any one of a cylinder, an electric push rod, a linear guide rail, or a linear module. The cylinder uses compressed air as a power source and features fast response, large thrust, simple structure, and convenient maintenance. During the coating process, it can quickly drive the cutter head 4 to reciprocate. The electric push rod, through a motor driving a lead screw and nut mechanism, converts rotational motion into linear motion, enabling precise displacement control and speed adjustment. It provides stable thrust, smooth movement, and high positioning accuracy, ensuring the accurate positioning of the cutter head 4 during coating and effectively improving the uniformity and consistency of the coating. The linear guide rail features a low coefficient of friction, high rigidity, and strong load-bearing capacity. When used in conjunction with a motor, it provides stable and smooth guidance for the horizontal movement of the cutter head 4, reducing swaying and deviation during movement and ensuring that the cutter head 4 moves precisely along a straight line during coating, thereby improving coating quality. The linear module integrates a drive motor, transmission mechanism, and linear guide rail, and is a highly modular linear motion device. It combines the precise control of electric linear actuators with the high-precision guiding performance of linear guides, featuring high speed, high precision, and high load capacity, enabling the cutter head to achieve fast and accurate linear reciprocating motion.

[0034] In this embodiment, the displacement assembly 3 further includes a vertical displacement mechanism, which is connected to the output end of the horizontal displacement mechanism. The output end of the vertical displacement mechanism is connected to the cutter head 4. The vertical displacement mechanism can be any one of a cylinder, an electric push rod, a linear guide rail, or a linear module. The vertical displacement mechanism works in conjunction with the horizontal displacement mechanism to provide multi-dimensional motion control capabilities for the cutter head 4. When a cylinder, electric push rod, linear guide rail, or linear module is selected for the vertical displacement mechanism, each component utilizes its characteristics to ensure the accuracy of the coating process. Driven by compressed air, the cylinder enables rapid lifting and lowering, quickly adjusting the height of the cutter head 4 before and after coating to improve work efficiency. Air pressure regulation allows for flexible control of the contact pressure between the cutter head 4 and the substrate. The electric push rod, driven by a motor, achieves high-precision position control and stable thrust output, ensuring the vertical positioning accuracy of the cutter head 4 and precisely adjusting the distance between it and the substrate to meet the process requirements of different coating thicknesses. The linear guide rail, characterized by low friction and high rigidity, provides stable support and guidance for the vertical movement of the cutter head 4, reducing swaying, improving the stability of the cutter head 4's movement, and ensuring uniform pressure during coating. The linear module integrates drive and guidance functions, combining high precision, high speed, and high load capacity. It enables rapid and precise vertical displacement of the cutter head 4, adapting to cutter heads of different weights. Furthermore, programming allows for complex motion trajectory control, enhancing the flexibility and adaptability of the coating process. Multiple options adapt to different production scenarios, collectively ensuring the stability and accuracy of the cutter head 4's vertical movement, thereby improving coating quality and process stability.

[0035] like Figure 2 As shown, the coating apparatus also includes a cleaning component 5, located on one side of the starting end of the air flotation plate 2. The cleaning component 5 includes a drive unit and a roller 51. The drive unit is fixedly connected to the base 1, and its output end is connected to the roller 51. The outer surface of the roller 51 is coated with cleaning agent for cleaning the cutter head 4. The cleaning component 5, located at the starting end of the air flotation plate 2 and consisting of the drive unit and the roller 51, provides a reliable guarantee for the efficient and stable operation of the coating apparatus. The drive unit is fixed to the base 1 and drives the roller 51 to rotate via power output, ensuring that the outer surface of the roller 51, coated with cleaning agent, continuously contacts the cutter head 4. Before or after each coating operation, the cutter head 4 moves to the position of the cleaning component 5. As the roller 51 rotates, the cleaning agent quickly dissolves any residual paint and impurities on the cutter head 4, preventing hardening and drying. The continuously rotating roller 51 can comprehensively cover the surface of the cutter head 4, achieving thorough cleaning and preventing residual substances from affecting the subsequent coating accuracy and pressure control of the cutter head 4. The drive component uses a servo motor, which has high speed control accuracy, precise positioning and start / stop, and fast response speed.

[0036] In this embodiment, the outer surface of the roller 51 is covered with a sponge or absorbent fiber material to absorb the cleaning agent. The sponge has a porous structure, strong absorbency, and can store sufficient cleaning agent. Its soft texture also prevents scratching the blade head 4. The absorbent fiber material (such as polyester fiber, nylon fiber, etc.) can quickly absorb and transfer the cleaning agent through capillary action, while also possessing a certain degree of abrasion resistance, maintaining stable performance over long-term use. Both materials ensure that the cleaning agent is evenly distributed on the surface of the roller 51. When in contact with the blade head 4, the rolling motion effectively dissolves and removes residual paint, achieving efficient cleaning. Furthermore, the absorbent fiber material can enhance its penetration into the gaps of the blade head 4 through a woven structure design (such as a dense mesh), improving the cleaning effect; while the elasticity of the sponge allows it to better conform to the contours of the blade head 4, ensuring thorough cleaning. Both materials are easily disassembled and replaced, facilitating maintenance and adjustment of cleaning strategies to meet the cleaning needs of different types of paint.

[0037] like Figure 2 As shown, the cleaning assembly 5 also includes a scraper 52, which is connected to the base 1 and arranged along the axial direction of the roller 51. The scraper 52 rolls and abuts against the outer surface of the roller 51. After the roller 51 absorbs the residual paint from the blade 4, the scraper 52, with its sharp edge or elastic contact, can effectively peel off the solid or high-viscosity paint from the surface of the roller 51, preventing its accumulation from affecting the subsequent cleaning effect. At the same time, the rolling contact relationship between the scraper 52 and the roller 51 ensures a smooth and continuous scraping process, avoiding damage or vibration to the roller 51 caused by rigid contact. When the roller 51 rotates, the axial arrangement of the scraper 52 allows it to cover the entire cleaning area, forming a comprehensive scraping path. Combined with the dissolving effect of the cleaning agent, residual substances can be thoroughly removed and directed to a collection area (such as a waste liquid tank).

[0038] like Figure 2 As shown, the cleaning component 5 also includes a receiving trough 53, which is connected to the base 1 and spaced apart from the roller 51. It is used to collect waste adhesive scraped off by the scraper 52. When the scraper 52 scrapes off the residual waste adhesive from the surface of the roller 51, the receiving trough 53 accurately catches the falling waste adhesive, preventing it from scattering onto the air flotation plate 2, the base 1, or other components, thus preventing equipment contamination due to waste adhesive accumulation and affecting the normal operation of the coating device. Simultaneously, the receiving trough 53 can centrally collect waste adhesive, facilitating regular cleaning by staff, reducing cleaning frequency, and improving production efficiency.

[0039] like Figure 2As shown, the cleaning assembly 5 also includes a liquid control tank 54, which is installed on the base 1 and located between the detection piece and the roller 51. After the cutter head 4 has finished cleaning, the displacement assembly 3 moves it above the liquid control tank 54. At this time, the liquid control tank 54 can effectively catch the residual cleaning agent dripping from the surface of the cutter head 4, preventing liquid from dripping onto the air flotation plate 2 or the detection piece and affecting the operation of the equipment. When the cutter head 4 is naturally drying above the liquid control tank 54, the presence of the liquid control tank 54 can prevent the cleaning agent from splashing or accumulating everywhere, keeping the working area clean. At the same time, by collecting the dripping liquid through the liquid control tank 54, it can prevent residual cleaning agent from forming droplets on the surface of the cutter head 4, preventing uneven coating thickness or impurities from appearing during coating due to liquid mixing with the coating. In addition, the liquid control tank 54 provides a dedicated drying space for the cutter head 4. Combined with natural air drying, it ensures that the cutter head 4 is in a dry and clean state before coating, thereby improving the accuracy of the coating process and product quality, reducing coating abnormalities caused by moisture, and ensuring the continuity and reliability of the production process.

[0040] like Figure 2 As shown, the bottom of the liquid control tank 54 is equipped with a drain port 55, which is used to drain the cleaning agent dripping from the blade 4. When the blade 4 is naturally dried above the liquid control tank 54, the dripping cleaning agent collects in the tank, and the drain port 55 can discharge the waste liquid in time, avoiding excessive accumulation of liquid in the tank and overflow, preventing contamination of components such as the air flotation plate 2 and the base 1, and ensuring a clean coating operation environment.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A coating apparatus, characterized in that, The system includes a base (1), an air flotation plate (2), a displacement assembly (3), a cutter head (4), a detection component, and a control assembly. The air flotation plate (2) is horizontally positioned above the base (1) to support the substrate. The displacement assembly (3) is mounted on the base (1), and its output end is connected to the cutter head (4) to drive the cutter head (4) to move linearly back and forth above the air flotation plate (2). The detection component is fixedly mounted on the base (1) and located on one side of the starting end of the air flotation plate (2) to detect the contact pressure of the cutter head (4) on the substrate. The signal input end of the control assembly is electrically connected to the detection component, and the control output end of the control assembly is electrically connected to the displacement assembly (3). Under the control of the control assembly, the displacement assembly (3) can drive the cutter head (4) to move up and down in a direction perpendicular to the air flotation plate (2).

2. The coating apparatus according to claim 1, characterized in that, The air flotation plate (2) is provided with a first air passage and a second air passage that are respectively connected to an external air source. The air outlets of the first air passage and the second air passage are both opened on the mounting surface of the air flotation plate (2) opposite to the base (1). The first air passage is used to transmit positive pressure airflow, and the second air passage is used to transmit negative pressure airflow.

3. The coating apparatus according to claim 1, characterized in that, The detection component is a pressure sensor.

4. The coating apparatus according to claim 1, characterized in that, The displacement component (3) includes a horizontal displacement mechanism, which is connected to the base (1). The horizontal displacement mechanism is any one of a cylinder, an electric push rod, a linear slide rail, or a linear module.

5. The coating apparatus according to claim 4, characterized in that, The displacement component (3) further includes a vertical displacement mechanism, which is connected to the output end of the horizontal displacement mechanism. The output end of the vertical displacement mechanism is connected to the cutter head (4). The vertical displacement mechanism is any one of a cylinder, an electric push rod, a linear slide rail, or a linear module.

6. The coating apparatus according to any one of claims 1-5, characterized in that, The coating device further includes a cleaning component (5), which is located on one side of the starting end of the air flotation plate (2). The cleaning component (5) includes a drive and a roller (51). The drive is fixedly connected to the base (1), and the output end of the drive is connected to the roller (51). The outer surface of the roller (51) is adsorbed with cleaning agent for cleaning the blade (4).

7. The coating apparatus according to claim 6, characterized in that, The cleaning component (5) also includes a scraper (52), which is connected to the base (1) and arranged along the axial direction of the roller (51). The scraper (52) rolls against the outer surface of the roller (51).

8. The coating apparatus according to claim 7, characterized in that, The cleaning component (5) also includes a receiving trough (53), which is connected to the base (1) and spaced apart from the roller (51) to receive the waste glue scraped off by the scraper (52).

9. The coating apparatus according to claim 6, characterized in that, The cleaning component (5) also includes a liquid control tank (54), which is installed on the base (1) and located between the detection element and the roller (51).

10. The coating apparatus according to claim 9, characterized in that, The bottom of the liquid control tank (54) is provided with a drain port (55), which is used to discharge the cleaning agent dripping from the blade (4).

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