A teflon cloth processing coating machine

Abstract

This invention discloses a coating machine for Teflon fabric processing, belonging to the field of coating machine technology. It solves the technical problems of existing solutions, such as unstable tension control, poor centering performance, and a relatively loose overall structure. The machine includes a main base, on which an unwinding unit, a winding unit, a drying unit, a coating unit, and an adjusting unit are arranged on the upper wall. The unwinding and winding units are located at opposite ends of the upper wall of the main base, and the drying unit is located on the upper wall of the main base near the winding unit. This invention integrates unwinding, winding, coating, drying, adjusting, and temperature control functions into a single main base. The units work closely together, solving the problems of loose structure and large space occupation in existing equipment. The overall layout of the equipment is reasonable, operation is convenient, and maintenance costs are low. It also improves operational stability and coordination, making it suitable for large-scale, continuous Teflon fabric processing scenarios.

Description

Technical Field

[0001] This invention relates to the field of coating machine technology, specifically to a coating machine for processing Teflon cloth. Background Technology

[0002] Teflon-coated fabrics are widely used in aerospace, papermaking, food, and environmental protection fields due to their excellent high and low temperature resistance, anti-adhesion properties, and chemical stability. In the production and processing of Teflon fabrics, the coating process is a crucial step determining the quality of the finished product. Existing coating equipment generally suffers from the following technical problems when processing Teflon fabrics: The physical properties of the Teflon base fabric undergo slight changes during the coating process and high-temperature drying. Traditional equipment struggles to adjust the fabric tension accurately and in real time, easily leading to wrinkles or uneven coating thickness. Different batches of fabric vary in width; existing unwinding and rewinding mechanisms are cumbersome to adjust, making it difficult to ensure the fabric always runs along the machine's centerline, easily causing deviation. Existing coating machines often only focus on drying temperature, neglecting preheating before coating and rapid cooling after coating, which affects the penetration and curing quality of the Teflon agent on the base fabric. Initial feeding and fabric cleaning rely heavily on manual operation, resulting in low production efficiency and increasing the risk of introducing impurities.

[0003] Existing technical solutions have problems such as unstable tension control, inadequate alignment performance, and a relatively loose overall structure of the equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a coating machine for processing Teflon fabric, which solves the technical problems of existing solutions, such as the inability to stably control tension, poor centering performance, and a relatively loose overall equipment structure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coating machine for processing Teflon fabric, comprising a main base, wherein an unwinding unit, a winding unit, a drying unit, a coating unit, and an adjusting unit are provided on the upper wall of the main base; the unwinding unit and the winding unit are located at both ends of the upper wall of the main base; the drying unit is located on the upper wall of the main base near the winding unit; a mounting frame is fixedly installed on the upper wall of the main base; the coating unit is located on the upper wall of the mounting frame near the unwinding unit; and the adjusting unit is located on the upper wall of the main base. The unwinding unit is used to release the fabric, the winding unit is used to wind the fabric, and the adjusting unit is used to detect the fabric tension and calender the fabric to tighten it.

[0006] Preferably, both the unwinding unit and the rewinding unit are provided with a centering adjustment structure. The centering adjustment structure includes a guide rail, two end plates, and a drive frame. The guide rail is fixedly installed on the main base, and the two end plates are slidably installed on the guide rail. A drive motor is provided on one of the two end plates, and a drive frame is provided at the drive end of the drive motor. A roller is provided between the two end plates, and the drive frame and the roller are detachably connected. A drive unit is provided between the guide rail and the two end plates.

[0007] Preferably, the drive unit includes a bidirectional motor, the drive end of which is respectively connected to a threaded rod with opposite rotation direction, the lower end of the end plate is provided with a corresponding threaded hole, the end plate is threadedly connected to the threaded rod, the two end plates are symmetrically arranged and move in opposite directions.

[0008] Preferably, a temperature regulating unit is provided on the main base, the temperature regulating unit includes a preheating roller and a cooling roller, a column is fixedly installed on the main base, the preheating roller and the cooling roller are respectively rotatably installed between the columns, the preheating roller is installed on one side of the unwinding unit, the cooling roller is located on one side of the winding unit, a refrigeration unit is provided on the main base, the heat pipe of the refrigeration unit is connected to one end of the preheating roller, the cold pipe of the refrigeration unit is connected to one end of the cooling roller, and a ventilation cavity is opened in the cooling roller and the preheating roller, the ventilation cavity is used to introduce cold air or hot air to change the surface temperature of the cooling roller and the preheating roller.

[0009] Preferably, the coating unit includes a paint tank and a spray head. The paint tank is fixedly installed on the mounting frame, and the spray head is fixedly installed at the lower end of the paint tank. The spray head is arranged in an array to uniformly spray paint droplets onto the surface of the material cloth. A support frame is fixedly installed on the upper wall of the main base, and a support roller is fixedly installed on the support frame. The support roller is used to cooperate with the drying unit to straighten the cloth. A paint recovery basin is provided on the main base.

[0010] Preferably, the drying unit includes a drying box, which is disposed on the upper wall of the main base. The upper end of the drying box is an arc-shaped plate, and an exhaust hole is provided at the upper end of the drying box. An air supply fan is provided inside the drying box, and an air inlet is provided on the side wall of the drying box. A heating resistance wire is provided inside the upper end of the drying box.

[0011] Preferably, the adjustment unit includes a pair of swing arms, which are rotatably mounted on the upper wall of the mounting frame. Detection pressure rollers are rotatably mounted on the lower ends of the pair of swing arms, and counterweight rollers are rotatably mounted on the upper ends of the pair of swing arms. Tension sensors are provided on the detection pressure rollers. When the swing arms swing to the pressing state, the detection pressure rollers are pressed and connected to the preheating roller and the cooling roller respectively.

[0012] Preferably, a linkage hydraulic cylinder is rotatably mounted on the upper end of one of the swing arms, and the telescopic end of the linkage hydraulic cylinder is rotatably connected to the upper end of the other swing arm.

[0013] Preferably, a swing plate is rotatably mounted on the swing arm, and a cleaning rod is provided at the front end of the swing plate.

[0014] Preferably, a feeding motor is provided on the main base, and an auxiliary rod is fixedly installed on the drive end of the feeding motor. A feeding shaft is provided at one end of the auxiliary rod. The feeding shaft is used to connect to the starting end of the fabric and feed the fabric from the unwinding unit into the winding unit.

[0015] Beneficial effects:

[0016] 1. This invention uses a bidirectional motor to drive threaded rods with opposite rotation directions, causing the end plates of the unwinding and rewinding units to move synchronously and symmetrically. It can automatically adapt to Teflon cloth of different widths, ensuring that the cloth always runs along the machine centerline during long-distance transmission. This completely solves the problems of poor centering performance and easy deviation of traditional equipment, significantly improves the regularity of the coating edge, and ensures the dimensional consistency of the finished cloth.

[0017] 2. The adjustment unit collects fabric tension data in real time through a tension sensor integrated into the pressure roller. Combined with the balancing effect of the counterweight roller and the synchronous drive of the linkage hydraulic cylinder, it achieves dynamic closed-loop adjustment of fabric tension. Regardless of whether the fabric is in the coating, drying, or conveying stage, it can maintain constant tension, effectively avoiding fabric wrinkles, stretching deformation, or breakage, and solving the core technical pain point of existing equipment's inability to stably control tension.

[0018] 3. An innovative temperature control unit consisting of a preheating roller and a cooling roller is set up. Before coating, the surface activity of the Teflon cloth is enhanced by the preheating roller, which improves the penetration and adhesion of the coating. After coating and drying, the cooling roller quickly cools down and cures the coating. This not only shortens the coating forming cycle, but also significantly improves the bonding strength between the coating and the base fabric. It avoids coating peeling and cracking caused by lack of temperature control, and ensures the weather resistance and service life of the finished product.

[0019] 4. The coating unit adopts an array-type spray head design to ensure that the paint droplets are evenly distributed on the fabric surface. Combined with the straightening effect of the support roller, it achieves precise control of the coating thickness. The added paint recovery basin can efficiently collect excess paint during the spraying process, realize material recycling, reduce material waste, and significantly reduce material costs in the production process.

[0020] 5. The drying oven adopts an arc-shaped top cover and a forced convection hot air design. The air supply fan and heating resistance wire work together to ensure that the fabric is heated evenly, and the drying efficiency is significantly improved compared with traditional equipment. The exhaust vent at the top can promptly discharge the waste gas and water vapor generated during drying, which not only avoids water vapor residue affecting the coating quality, but also maintains a clean production environment, taking into account both production efficiency and environmental protection requirements.

[0021] 6. The auxiliary rod driven by the material motor and the feeding shaft realize the automation of the initial fabric feeding, which greatly shortens the production preparation time and reduces the intensity of manual operation; the cleaning rod on the swing arm can remove floating dust and impurities on the fabric surface online, avoiding the inefficiency and impurity introduction problems caused by manual cleaning, and further ensuring the purity of the coating and the qualified rate of finished products.

[0022] In summary, this invention integrates unwinding, winding, coating, drying, adjustment, and temperature control functions into a single main base. The units work closely together, solving the problems of loose structure and large space occupation in existing equipment. The overall layout of the equipment is reasonable, easy to operate, and has low maintenance costs. At the same time, it improves operational stability and coordination, making it suitable for large-scale, continuous Teflon fabric processing scenarios. It has strong practical value and promising prospects for promotion. Attached Figure Description

[0023] Figure 1 This is a first three-dimensional structural schematic diagram of a coating machine for processing Teflon cloth according to the present invention.

[0024] Figure 2 This is a second three-dimensional structural schematic diagram of a coating machine for processing Teflon cloth according to the present invention.

[0025] Figure 3 This is a schematic diagram of the main structure of a coating machine for processing Teflon cloth according to the present invention.

[0026] Figure 4 This is a side view of the coating machine for processing Teflon cloth according to the present invention.

[0027] Figure 5 This is a schematic diagram of the front cross-sectional structure of a coating machine for processing Teflon cloth according to the present invention.

[0028] Figure 6 This is a top view cross-sectional structural diagram of a coating machine for processing Teflon cloth according to the present invention.

[0029] Figure 7 This is a sectional view of the coating machine for processing Teflon cloth according to the present invention.

[0030] In the diagram: 1. Main base; 2. Mounting frame; 3. Guide rail; 4. End plate; 5. Drive frame; 6. Drive motor; 8. Roller; 9. Bidirectional motor; 10. Threaded rod; 11. Preheating roller; 12. Cooling roller; 13. Column; 14. Refrigeration unit; 15. Ventilation chamber; 16. Paint tank; 17. Spray head; 18. Support frame; 19. Support roller; 20. Paint recovery basin; 21. Drying box; 22. Exhaust port; 23. Air supply fan; 24. Air inlet; 25. Heating resistance wire; 26. Swing arm; 27. Detection pressure roller; 28. Counterweight roller; 29. ​​Linked hydraulic cylinder; 30. Swing plate; 31. Cleaning rod; 32. Feeding motor; 33. Auxiliary rod; 34. Feeding shaft. Detailed Implementation

[0031] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Detailed description follows.

[0032] Please see Figures 1-7 The present invention provides a technical solution: a coating machine for processing Teflon cloth, comprising a main base 1, wherein an unwinding unit, a winding unit, a drying unit, a coating unit and an adjusting unit are provided on the upper wall of the main base 1, the unwinding unit and the winding unit are located at both ends of the upper wall of the main base 1, the drying unit is located on the upper wall of the main base 1 near the winding unit, a mounting frame 2 is fixedly installed on the upper wall of the main base 1, the coating unit is located on the upper wall of the mounting frame 2 near the unwinding unit, and the adjusting unit is located on the upper wall of the main base 1. The unwinding unit is used to release the cloth, the winding unit is used to wind the cloth, and the adjusting unit is used to detect the cloth tension and calender and tighten the cloth.

[0033] By integrating unwinding, coating, drying, winding, and adjustment units on the main base 1, a complete continuous Teflon fabric production line is constructed. The unwinding unit and winding unit are responsible for material input and finished product collection, respectively. The coating unit is positioned at the front end through the mounting frame 2 to ensure that the fabric is coated with the agent before entering the drying process. The adjustment unit ensures that the fabric remains flat and has constant tension during the entire line operation by real-time detection and calendering of the fabric tension, preventing wrinkles or breakage.

[0034] In some embodiments, both the unwinding unit and the rewinding unit are provided with a centering adjustment structure. The centering adjustment structure includes a guide rail 3, two end plates 4, and a drive frame 5. The guide rail 3 is fixedly installed on the main base 1, and the two end plates 4 are slidably installed on the guide rail 3. A drive motor 6 is provided on one of the two end plates 4, and the drive frame 5 is provided at the drive end of the drive motor 6. A roller 8 is provided between the two end plates 4, and the drive frame 5 and the roller 8 are detachably connected. A drive unit is provided between the guide rail 3 and the two end plates 4. The centering adjustment structure achieves adaptation to rollers 8 of different widths of fabric through the cooperation of the guide rail 3 and the sliding end plates 4. The drive motor 6 drives the roller 8 to rotate through the drive frame 5 to achieve active unwinding or rewinding. The drive unit controls the precise displacement of the two end plates 4 on the guide rail 3 to ensure that the center line of the fabric always coincides with the center line of the machine processing, thereby avoiding the fabric from deviating during the coating process.

[0035] In some embodiments, the drive unit includes a bidirectional motor 9, the drive end of which is connected to a threaded rod 10 with opposite directions of rotation. The lower end of the end plate 4 is provided with a corresponding threaded hole, and the end plate 4 is threadedly connected to the threaded rod 10. The two end plates 4 are symmetrically arranged with opposite directions of movement. The bidirectional motor 9 drives the threaded rods 10 with opposite directions of rotation, and the screw and nut transmission principle is used to make the left and right end plates 4 move in a mirror symmetrical manner. This structure only requires a single power source to realize the synchronous inward tightening or outward expansion of the two end plates 4, which improves the centering efficiency and ensures the mechanical symmetry accuracy of the centering operation.

[0036] In some embodiments, a temperature regulating unit is provided on the main base 1. The temperature regulating unit includes a preheating roller 11 and a cooling roller 12. A column 13 is fixedly installed on the main base 1. The preheating roller 11 and the cooling roller 12 are rotatably installed between the columns 13. The preheating roller 11 is installed on one side of the unwinding unit, and the cooling roller 12 is installed on one side of the winding unit. A refrigeration unit 14 is provided on the main base 1. The heat pipe of the refrigeration unit 14 is connected to one end of the preheating roller 11, and the cold pipe of the refrigeration unit 14 is connected to one end of the cooling roller 12. Ventilation chambers 15 are opened in the cooling roller 12 and the preheating roller 11. The air chamber 15 is used to introduce cold or hot air to change the surface temperature of the cooling roller 12 and the preheating roller 11, which are electric rollers. The temperature control unit uses the heat and cold energy circulation of the refrigeration unit 14 to heat and cool the preheating roller 11 and the cooling roller 12 respectively. The preheating roller 11 raises the surface temperature of the fabric through the hot air in the air chamber 15, enhancing the penetration and adhesion of the Teflon coating. The cooling roller 12 rapidly cools and cures the fabric after drying. The active rotation of the electric roller can reduce the frictional resistance of the material during the traction process.

[0037] In some embodiments, the coating unit includes a paint tank 16 and a spray head 17. The paint tank 16 is fixedly mounted on the mounting frame 2, and the spray head 17 is fixedly mounted on the lower end of the paint tank 16. The spray heads 17 are arranged in an array to uniformly spray paint droplets onto the surface of the material cloth. A support frame 18 is fixedly mounted on the upper wall of the main base 1, and a support roller 19 is fixedly mounted on the support frame 18. The support roller 19 is used to cooperate with the drying unit to straighten the cloth. A paint recovery basin 20 is provided on the main base 1. The coating unit adopts an array spray head 17 design, which supplies paint through the paint tank 16 to uniformly distribute paint droplets on the surface of the cloth. The support roller 19 cooperates with the drying unit to form a stable physical support plane to ensure a constant spraying distance. The paint recovery basin 20 can collect excess liquid generated during the spraying process, realize the recycling of materials, and keep the environment clean.

[0038] In some embodiments, the drying unit includes a drying chamber 21, which is disposed on the upper wall of the main base 1. The upper end of the drying chamber 21 is an arc-shaped plate, and an exhaust port 22 is provided at the upper end of the drying chamber 21. An air supply fan 23 is provided inside the drying chamber 21, and an air inlet 24 is opened on the side wall of the drying chamber 21. A heating resistance wire 25 is provided inside the upper end of the drying chamber 21. The drying chamber 21 generates heat through the built-in heating resistance wire 25, and the air supply fan 23 guides the hot air to force convection in the chamber. The arc-shaped upper cover plate helps airflow circulation, and the exhaust port 22 is used to discharge the waste gas and water vapor generated during the drying of the coating. This structure heats the Teflon coating evenly with hot air, so that the Teflon coating can quickly form a film and dry on the surface of the fabric.

[0039] In some embodiments, the adjustment unit includes a pair of swing arms 26, which are rotatably mounted on the upper wall of the mounting frame 2. Detection pressure rollers 27 are rotatably mounted on the lower ends of the pair of swing arms 26, and counterweight rollers 28 are rotatably mounted on the upper ends of the pair of swing arms 26. Tension sensors are provided on the detection pressure rollers 27. When the swing arms 26 swing to the pressing state, the detection pressure rollers 27 are pressed and connected to the preheating roller 11 and the cooling roller 12 respectively. The structure of the swing arms 26 of the adjustment unit is balanced by the counterweight rollers 28. The detection pressure rollers 27 at the lower end integrate tension sensors, which can acquire the linear tension data of the fabric in real time. When the swing arms 26 press against the preheating roller 11 or the cooling roller 12, a friction transmission pair is formed, which not only increases the wrap angle of the fabric to stabilize the tension, but also provides a precise feedback signal for the control system to adjust the operating speed of the frequency converter.

[0040] In some embodiments, a linkage hydraulic cylinder 29 is rotatably mounted on the upper end of one swing arm 26, and the telescopic end of the linkage hydraulic cylinder 29 is rotatably connected to the upper end of another swing arm 26; the linkage hydraulic cylinder 29 is connected between the two swing arms 26, and through the telescopic action of the hydraulic rod, it synchronously drives a pair of swing arms 26 to perform opening and closing movements; this design ensures that the pressure applied at the two detection positions is consistent, simplifies the control logic, and improves the mechanical response speed.

[0041] In some embodiments, a swing plate 30 is rotatably mounted on the swing arm 26, and a cleaning rod 31 is provided at the front end of the swing plate 30. The swing plate 30 is an electric plate. The electric swing plate 30 and the cleaning rod 31 mounted on the swing arm 26 can remove floating dust or impurities attached to the surface during the fabric processing. Through the reciprocating motion of the swing plate 30, the cleaning rod 31 can effectively clean the surface of the fabric and prevent impurities from entering the coating unit, which may cause the finished product to have a grainy texture or coating defects.

[0042] In some embodiments, a feeding motor 32 is provided on the main base 1, and an auxiliary rod 33 is fixedly installed on the driving end of the feeding motor 32. A feeding shaft 34 is provided at one end of the auxiliary rod 33. The feeding shaft 34 is used to connect the starting end of the fabric and feed the fabric from the unwinding unit to the winding unit. The feeding motor 32 drives the auxiliary rod 33 and the feeding shaft 34 to perform the fabric guiding function during the initial start-up phase of the equipment. This structure can automatically pull the front end of the fabric from the unwinding point and pass through each processing unit until it reaches the winding shaft, reducing the difficulty and safety risks of manual fabric threading and improving the automation level of the production preparation stage.

[0043] The working principle is as follows: First, the Teflon fabric roller 8 to be processed is placed between the two end plates 4 of the unwinding unit; the feeding motor 32 is started, driving the auxiliary rod 33 and the feeding shaft 34 to move the starting end of the fabric through the preheating roller 11, coating unit, drying unit, and cooling roller 12 in sequence, and finally fixed on the winding shaft of the winding unit to complete the initial path laying of the material; the upper end of the remaining components is designed with a semi-circular outline to facilitate the straightening of the fabric, and only one swing is needed. According to the width of the fabric, the bidirectional motor 9 in the centering adjustment structure is started; the bidirectional motor 9 drives the threaded rod 10 with opposite rotation direction to rotate, so that the left and right end plates 4 of the unwinding unit and the winding unit move synchronously inward or outward along the guide rail 3;

[0044] After the end plate 4 secures the roller 8, ensure that the center line of the fabric coincides with the center line of the machine's main shaft to prevent axial deviation during operation; operate the linkage hydraulic cylinder 29 to retract or extend, driving the two sets of swing arms 26 on the mounting frame 2 to swing downward; the detection pressure roller 27 located at the lower end of the swing arm 26 presses against the preheating roller 11 and the cooling roller 12 respectively, so that the fabric wraps around the pressure roller in a corner shape; simultaneously start the swing plate 30 to make the cleaning rod 31 fit against the fabric surface, preparing for subsequent online cleaning;

[0045] The refrigeration unit 14 is turned on, and hot air is supplied to the ventilation chamber 15 of the preheating roller 11 through the heat pipe, while cold air is supplied to the ventilation chamber 15 of the cooling roller 12 through the cold pipe. The surface of the preheating roller 11 is heated to the preset process temperature to improve the physical activity of the Teflon cloth surface. The cooling roller 12 lowers the surface temperature to provide a cold source for the rapid curing of the subsequent coating. The main drive unit is started, and the cloth begins to move at a uniform speed. The coating unit's paint tank 16 supplies material to the array spray head 17, which evenly sprays Teflon coating droplets onto the cloth surface supported by the support roller 19. Excess paint falls into the paint recycling basin 20; the fabric enters the drying chamber 21, where the heating resistance wire 25 and the air supply fan 23 work together to generate hot air, drying the coating at high temperature to form a film; during operation, the tension sensor detects the radial pressure on the pressure roller 27 in real time and feeds the data back to the control system; if the tension fluctuates, the control system automatically adjusts the speed ratio of the unwinding, drive roller and winding motor, and maintains the fabric flat and constant tension through the mechanical compensation of the adjustment unit; after the fabric is cooled and shaped by the cooling roller 12, it is neatly wound up by the winding unit;

[0046] When the winding diameter reaches the set value or a single roll is finished, stop the machine and reverse the centering adjustment structure to loosen end plate 4 and remove the finished Teflon cloth roll.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A coating machine for processing Teflon cloth, comprising a main base (1), characterized in that, The upper wall of the main base (1) is provided with an unwinding unit, a winding unit, a drying unit, a coating unit and an adjusting unit. The unwinding unit and the winding unit are located at both ends of the upper wall of the main base (1). The drying unit is located on the upper wall of the main base (1) near the winding unit. A mounting frame (2) is fixedly installed on the upper wall of the main base (1). The coating unit is located on the upper wall of the mounting frame (2) near the unwinding unit. The adjusting unit is located on the upper wall of the main base (1). The unwinding unit is used to release the fabric. The winding unit is used to roll up the fabric. The adjusting unit is used to detect the fabric tension and roll and tighten the fabric. A temperature control unit is provided on the main base (1). The temperature control unit includes a preheating roller (11) and a cooling roller (12). A column (13) is fixedly installed on the main base (1). The preheating roller (11) and the cooling roller (12) are rotatably installed between the column (13). The preheating roller (11) is installed on one side of the unwinding unit, and the cooling roller (12) is installed on one side of the winding unit. A refrigeration unit (14) is provided on the main base (1). The heat pipe of the refrigeration unit (14) is connected to one end of the preheating roller (11), and the cold pipe of the refrigeration unit (14) is connected to one end of the cooling roller (12). A ventilation cavity (15) is opened in the cooling roller (12) and the preheating roller (11). The ventilation cavity (15) is used to send in cold air or hot air to change the surface temperature of the cooling roller (12) and the preheating roller (11). The adjustment unit includes a pair of swing arms (26), which are rotatably mounted on the upper wall of the mounting frame (2). The lower ends of the pair of swing arms (26) are respectively rotatably mounted with detection pressure rollers (27), and the upper ends of the pair of swing arms (26) are respectively rotatably mounted with counterweight rollers (28). The detection pressure rollers (27) are equipped with tension sensors. When the swing arms (26) swing to the pressing state, the detection pressure rollers (27) are respectively pressed and connected with the preheating roller (11) and the cooling roller (12). A linkage hydraulic cylinder (29) is rotatably mounted on the upper end of one of the swing arms (26), and the telescopic end of the linkage hydraulic cylinder (29) is rotatably connected to the upper end of the other swing arm (26).

2. The Teflon cloth processing coating machine according to claim 1, characterized by, Both the unwinding unit and the winding unit are equipped with a centering adjustment structure. The centering adjustment structure includes a guide rail (3), two end plates (4) and a drive frame (5). The guide rail (3) is fixedly installed on the main base (1). The two end plates (4) are slidably installed on the guide rail (3). One of the two end plates (4) is equipped with a drive motor (6). The drive end of the drive motor (6) is equipped with a drive frame (5). A roller (8) is provided between the two end plates (4). The drive frame (5) and the roller (8) are detachably connected. A drive unit is provided between the guide rail (3) and the two end plates (4).

3. The Teflon cloth processing coating machine according to claim 2, characterized by The drive unit includes a bidirectional motor (9), and the drive end of the bidirectional motor (9) is respectively connected to a threaded rod (10) with opposite rotation directions. The lower end of the end plate (4) is provided with a corresponding threaded hole. The end plate (4) is threadedly connected to the threaded rod (10). The two end plates (4) are symmetrically arranged and move in opposite directions.

4. The Teflon cloth processing coating machine according to claim 3, characterized by The coating unit includes a paint tank (16) and a spray head (17). The paint tank (16) is fixedly installed on the mounting frame (2). The spray head (17) is fixedly installed at the lower end of the paint tank (16). The spray heads (17) are arranged in an array to uniformly spray paint droplets onto the surface of the material cloth. A support frame (18) is fixedly installed on the upper wall of the main base (1). A support roller (19) is fixedly installed on the support frame (18). The support roller (19) is used to cooperate with the drying unit to straighten the cloth. A paint recovery basin (20) is provided on the main base (1).

5. A coating machine for processing Teflon cloth according to claim 4, characterized in that, The drying unit includes a drying box (21), which is located on the upper wall of the main base (1). The upper end of the drying box (21) is an arc-shaped plate. An exhaust hole (22) is provided at the upper end of the drying box (21). An air supply fan (23) is provided inside the drying box (21). An air inlet hole (24) is opened on the side wall of the drying box (21). A heating resistance wire (25) is provided inside the upper end of the drying box (21).

6. A coating machine for processing Teflon cloth according to claim 5, characterized in that, A swing plate (30) is rotatably mounted on the swing arm (26), and a cleaning rod (31) is provided at the front end of the swing plate (30).

7. A coating machine for processing Teflon cloth according to claim 6, characterized in that, The main base (1) is provided with a feeding motor (32), and an auxiliary rod (33) is fixedly installed on the driving end of the feeding motor (32). One end of the auxiliary rod (33) is provided with a feeding shaft (34), which is used to connect the starting end of the fabric and feed the fabric from the unwinding unit into the winding unit.

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