Teflon film adhesive tape coating curing device

By using a multi-stage segmented curing system and infrared heating technology, the problems of uneven temperature and low efficiency in Teflon film tape coating curing devices have been solved, achieving efficient and uniform coating curing, and improving product quality and equipment durability.

CN224221856UActive Publication Date: 2026-05-12TAIZHOU CHENGUANG PLASTIC IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TAIZHOU CHENGUANG PLASTIC IND CO LTD
Filing Date
2025-04-24
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing Teflon film tape coating curing devices suffer from uneven temperature, low curing efficiency, and low production efficiency. In particular, for temperature-sensitive Teflon materials, this can easily lead to incomplete coating and surface defects.

Method used

The system employs a multi-stage segmented curing system, combining infrared heating technology and a reflux pipe design. By controlling the segmented temperature of the preheating chamber and the curing chamber, and combining infrared heaters and electric heating rods, it achieves uniform temperature distribution and efficient curing. The system also circulates hot air through the reflux pipe, reducing energy consumption.

Benefits of technology

It significantly improves curing efficiency, reduces coating defects, enhances coating quality and equipment durability, lowers production costs, and meets the needs of high-efficiency production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a Teflon film adhesive tape coating curing device which comprises a box body and a film adhesive tape body, and a first bearing plate, a second bearing plate and a third bearing plate are sequentially fixed in the box body from bottom to top. A heating curing cavity, a second preheating cavity and a first preheating cavity are formed in the positions, above the first bearing plate, the second bearing plate and the third bearing plate, in the box body correspondingly, a first backflow pipe and a second backflow pipe are evenly installed on the two sides of the box body correspondingly, and the two ends of the first backflow pipe extend into the heating curing cavity and the second preheating cavity correspondingly. The two ends of the second backflow pipe extend into the second preheating cavity and the first preheating cavity correspondingly. The multi-stage segmented curing system is adopted and comprises the first preheating cavity, the second preheating cavity and the heating curing cavity, different temperatures and curing time are adopted in all the segments, the temperature is gradually increased, the temperature of the thin film can be gradually increased, stress caused by temperature shock is reduced, the curing efficiency can be remarkably improved, and the production period can be shortened.
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Description

Technical Field

[0001] This utility model relates to the field of film tape processing technology, specifically a Teflon film tape coating curing device. Background Technology

[0002] In the production process of Teflon film tape, the curing of the coating is a crucial step, as its curing effect directly affects the quality and performance of the Teflon film tape.

[0003] Currently, existing Teflon film tape coating curing devices have several shortcomings in practical applications. Firstly, many traditional curing devices employ a single-stage curing method, curing the film tape at the same temperature. This method fails to adequately consider the varying temperature requirements of Teflon film tape at different stages, easily leading to significant stress in the film due to sudden temperature changes, thus affecting the film's physical properties and appearance quality. Simultaneously, single-temperature curing also struggles to achieve efficient curing processes, resulting in long curing times, low production efficiency, and an inability to meet ever-increasing production demands. Secondly, regarding heating methods, some traditional devices rely solely on conventional heating methods such as electric heating rods. Electric heating rods primarily transfer heat through conduction, which is insufficient for uniform heating of the film tape coating, easily causing temperature differences between the coating surface and interior. Especially for temperature-sensitive materials like Teflon, uneven heating can lead to incomplete coating curing, surface defects, and internal stress concentration, severely impacting the product quality of the Teflon film tape. Utility Model Content

[0004] The purpose of this invention is to provide a Teflon film tape coating curing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a Teflon film tape coating curing device, comprising a box and a film tape body, wherein a first support plate, a second support plate, and a third support plate are fixedly fixed inside the box from bottom to top, and a heating curing chamber, a second preheating chamber, and a first preheating chamber are respectively provided inside the box above the first support plate, the second support plate, and the third support plate; a heating roller is uniformly installed inside the groove at the top of the first support plate, and an electric heating rod is embedded inside the heating roller; an infrared heater is uniformly installed at the top of the heating curing chamber; a return pipe first and a return pipe second are uniformly installed on both sides of the box, and the two ends of the return pipe first extend into the interior of the heating curing chamber and the second preheating chamber, respectively, and the two ends of the return pipe second extend into the interior of the second preheating chamber and the first preheating chamber, respectively.

[0006] Adjustable telescopic rods are installed on the outer wall of the box at the connection between the heating curing chamber and the second preheating chamber, as well as at the connection between the second preheating chamber and the first preheating chamber, via U-shaped frames. The output end of each adjustable telescopic rod extends into the interior of the box and is connected to a support frame. Tensioning wheel one and tensioning wheel two are respectively installed at both ends of the support frame via rotating shafts.

[0007] Preferably, an inlet for the film tape body to enter is provided at the top of one end of the box, and an outlet for the film tape body to exit is provided at the bottom of the other end of the box, and an insulating outer protective layer is uniformly provided on the outside of the box.

[0008] Preferably, the heating roller shaft has an internal cavity for accommodating an electric heating rod, and the surface of the heating roller shaft is provided with a high-temperature resistant and anti-slip layer.

[0009] Preferably, the top of the second and third support plates are also provided with grooves, and guide rollers are uniformly arranged inside the grooves.

[0010] Preferably, a tension sensor is installed at the connection between the output end of each of the adjustable telescopic rods and the support frame.

[0011] Preferably, temperature sensors are installed inside the heating curing chamber, the second preheating chamber, and the first preheating chamber.

[0012] Preferably, both the first return pipe and the second return pipe are fitted with heat insulation sleeves.

[0013] Compared with existing technologies, this utility model of Teflon film tape coating curing device has significant technical advantages and positive effects, specifically in the following aspects:

[0014] 1. Multi-stage segmented curing system improves curing efficiency:

[0015] This device employs a multi-stage, segmented curing system, including a preheating chamber I, a preheating chamber II, and a heating and curing chamber. Each stage utilizes a different temperature and curing time, with gradual temperature increases. The first preheating chamber performs low-temperature preheating, the second preheating chamber performs medium-temperature uniform curing, and the final heating and curing chamber performs high-temperature rapid curing. This segmented curing design not only gradually increases the film temperature, reducing stress caused by sudden temperature changes, but also significantly improves curing efficiency and shortens the production cycle.

[0016] 2. Infrared radiation heating technology improves coating quality:

[0017] Inside the heating and curing chamber, in addition to traditional electric heating rods, infrared heaters are also uniformly installed. Infrared heating technology uses the thermal effect of infrared rays to heat the thin film coating quickly and uniformly. Infrared rays have good penetration into the coating, which helps to achieve uniform curing inside the coating, thereby significantly improving coating quality and reducing surface defects and internal stress.

[0018] 3. Optimized temperature distribution through reflux pipe design:

[0019] This device, through the design of reflux pipe one and reflux pipe two, utilizes the properties of hot air to ensure that the heated air flows uniformly from the heating and curing chamber to preheating chamber two and preheating chamber one. This design effectively avoids temperature dead zones, ensuring uniform temperature distribution throughout the curing process. This not only improves curing efficiency but also reduces energy consumption and lowers production costs.

[0020] 4. Energy-saving and environmentally friendly design concept:

[0021] The design of the return pipe allows for the recycling of hot air, reducing heat loss and thus lowering energy consumption. Furthermore, the external insulation layer further reduces heat loss, improving overall thermal efficiency and meeting energy-saving and environmentally friendly production requirements.

[0022] 5. Structural optimization improves ease of operation:

[0023] This device features an adjustable telescopic rod and tension wheel inside the housing, allowing for flexible adjustment to accommodate films of varying thicknesses. This prevents the tape from becoming loose or overstretched during curing, ensuring smooth operation of the film, maintaining tape flatness and coating uniformity, and enhancing operational convenience and equipment applicability.

[0024] 6. Intelligent monitoring ensures production stability:

[0025] Temperature sensors are installed inside the heating curing chamber, preheating chamber two, and preheating chamber one to monitor temperature changes in each section in real time, ensuring precise control of the curing process. Furthermore, a tension sensor installed at the connection between the adjusting telescopic rod and the support frame monitors the film tension in real time, preventing coating quality issues caused by excessive or insufficient tension, further ensuring production stability and product quality.

[0026] 7. High-temperature resistant and anti-slip design enhances equipment durability:

[0027] The heating roller shaft has an internal cavity for accommodating the electric heating rod, and its surface is covered with a high-temperature resistant and anti-slip layer. This design not only improves the heating efficiency of the heating roller shaft, but also enhances its durability and safety, reducing equipment damage and maintenance costs caused by high temperatures.

[0028] In summary, this utility model of Teflon film tape coating curing device significantly improves curing efficiency, coating quality, and equipment durability through technological innovations in multiple aspects, including a multi-stage segmented curing system, infrared radiation heating technology, reflux pipe design, energy-saving and environmental protection concept, structural optimization, intelligent monitoring, and high-temperature resistant and anti-slip design. Simultaneously, it reduces energy consumption and production costs, representing a new development trend in Teflon film tape coating curing technology, with broad application prospects and significant economic benefits. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the external structure of the box body of this utility model;

[0031] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0032] Figure 4 This is a schematic diagram of the heating roller shaft distribution structure of this utility model;

[0033] Figure 5 This is a schematic diagram of the internal structure of the heating roller shaft of this utility model;

[0034] In the diagram: 1. Box body; 2. Temperature sensor; 3. Support plate two; 4. Heating roller shaft; 5. Support plate one; 6. Heating and curing chamber; 7. Thermal insulation outer protective layer; 8. Film tape body; 9. Support frame; 10. Tensioning wheel one; 11. Cavity; 12. High temperature resistant anti-slip layer; 13. Guide roller shaft; 14. Preheating chamber one; 15. Preheating chamber two; 16. Support plate three; 17. U-shaped frame; 18. Adjustable telescopic rod; 19. Tension sensor; 20. Tensioning wheel two; 21. Discharge port; 22. Inlet port; 23. Return pipe two; 24. Return pipe one; 25. Groove; 26. Electric heating rod; 27. Infrared heater. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] Please see Figure 1-5An embodiment of this utility model is provided: a Teflon film tape coating curing device, including a box body 1 and a film tape body 8. A feed port 22 for the film tape body 8 to enter is provided at the top of one end of the box body 1, and a discharge port 21 for the film tape body 8 to exit is provided at the bottom of the other end of the box body 1. A heat-insulating outer protective layer 7 is uniformly provided on the outside of the box body 1.

[0037] Inside the housing 1, from bottom to top, are fixed a first bearing plate 5, a second bearing plate 3, and a third bearing plate 16. Above the first bearing plate 5, the second bearing plate 3, and the third bearing plate 16, the housing 1 is respectively equipped with a heating and curing chamber 6, a second preheating chamber 15, and a first preheating chamber 14. Temperature sensors 2 are installed inside the heating and curing chamber 6, the second preheating chamber 15, and the first preheating chamber 14.

[0038] The housing 1 is made of high-quality stainless steel, which has good high temperature resistance and corrosion resistance. An inlet 22 is located at the top of one end of the housing 1 for the film tape body 8 to enter; an outlet 21 is located at the bottom of the other end for the film tape body 8 to exit. The design of the inlet 22 and outlet 21 ensures the smooth operation of the film tape body 8 within the device.

[0039] The outer side of the housing 1 is uniformly wrapped with an insulating outer layer 7, which is made of high-density insulating material, effectively reducing heat loss and improving the energy utilization efficiency of the device.

[0040] Inside the housing 1, from bottom to top, are fixed a first bearing plate 5, a second bearing plate 3, and a third bearing plate 16. The first bearing plate 5, the second bearing plate 3, and the third bearing plate 16 are all made of high-temperature resistant materials and can withstand long-term operation in high-temperature environments.

[0041] Support plate 5: Located at the bottom of box 1, it mainly serves to support the film tape body 8.

[0042] Bearing plate 2 3: Located above bearing plate 1 5, it serves as a central support.

[0043] Support plate 3 16: Located above support plate 2 3, it further supports the film tape body 8.

[0044] Inside the box 1 above the first bearing plate 5, the second bearing plate 3, and the third bearing plate 16, there are respectively a heating and curing chamber 6, a second preheating chamber 15, and a first preheating chamber 14.

[0045] Heating and curing chamber 6: Located at the bottom layer, it is mainly used for high-temperature curing of the film tape body 8. The heating and curing chamber 6 is equipped with a high-efficiency heating element, which can rapidly heat up and maintain a constant temperature.

[0046] Preheating chamber 2 15: Located above the heating and curing chamber 6, it is mainly used to perform a second preheating treatment on the film tape body 8 to ensure that its temperature rises gradually and avoid coating quality problems caused by sudden temperature changes.

[0047] Preheating chamber 14: Located above preheating chamber 2 15, it is mainly used to perform the first preheating treatment on the film tape body 8 so that it initially reaches the appropriate processing temperature.

[0048] Temperature sensors 2 are installed inside the heating and curing chamber 6, the second preheating chamber 15, and the first preheating chamber 14. The temperature sensors 2 are high-precision sensors that can monitor the temperature changes in each chamber in real time and transmit the data to the control system for precise temperature control.

[0049] Heating rollers 4 are evenly installed inside the groove 25 at the top of the bearing plate 5, and electric heating rods 26 are embedded inside the heating rollers 4. The heating rollers 4 have a cavity 11 for accommodating the electric heating rods 26, and a high-temperature resistant anti-slip layer 12 is provided on the surface of the heating rollers 4.

[0050] The top of the second bearing plate 3 and the third bearing plate 16 are also provided with grooves 25, and guide rollers 13 are evenly arranged inside the grooves 25.

[0051] Infrared heaters 27 are evenly installed at the top of the heating and curing chamber 6. Return pipe 1 24 and return pipe 23 are evenly installed on both sides of the box body 1. The two ends of return pipe 1 24 extend into the heating and curing chamber 6 and the preheating chamber 2 15, respectively, and the two ends of return pipe 23 extend into the preheating chamber 2 15 and the preheating chamber 14, respectively.

[0052] Both reflux pipe 1 24 and reflux pipe 2 23 are fitted with heat insulation sleeves on their outer sides.

[0053] Support plate 5: Located at the top of the device, its top has a groove 25. Heating rollers 4 are evenly installed inside the groove 25. Electric heating rods 26 are embedded inside the heating rollers 4 to provide heating. The heating rollers 4 have cavities 11 inside to accommodate the electric heating rods 26, ensuring that the electric heating rods 26 can be stably placed and function. In addition, the surface of the heating rollers 4 is provided with a high-temperature resistant anti-slip layer 12 to increase friction and prevent the material from sliding during heating.

[0054] Bearing plate 2 (3) and bearing plate 3 (16): Located in different parts of the device, each bearing plate has a groove 25 on its top. Guide rollers 13 are evenly arranged inside the grooves 25 to guide the movement of materials.

[0055] Infrared heaters 27 are uniformly installed at the top of the heating and curing chamber 6 to heat and cure the material. The arrangement of the infrared heaters 27 ensures uniform heat distribution and improves heating efficiency.

[0056] Return pipe 24: Installed on both sides of the chamber 1, with both ends extending into the interior of the heating and curing chamber 6 and the preheating chamber 15, respectively. The outside of the return pipe 24 is fitted with an insulation sleeve to reduce heat loss.

[0057] Return pipe 23: Also installed on both sides of housing 1, with both ends extending into the interior of preheating chamber 2 15 and preheating chamber 1 14 respectively. The outside of return pipe 23 is also covered with an insulation sleeve to ensure that heat is effectively maintained during the transmission process.

[0058] Heating roller 4: The design of its internal cavity 11 ensures that the electric heating rods 26 are evenly distributed, providing a stable heating effect. The material selection of the high-temperature resistant anti-slip layer 12 is crucial, and high-temperature resistant rubber or ceramic materials are usually used to ensure that good anti-slip performance is maintained in high-temperature environments.

[0059] Infrared heater 27: It adopts high-efficiency infrared heating elements and is arranged in a uniform manner to ensure that the material is heated evenly and avoid local overheating or underheating.

[0060] Adjustable telescopic rods 18 are installed on the outer wall of the box 1 at the connection between the heating curing chamber 6 and the preheating chamber 2 15, as well as the connection between the preheating chamber 2 15 and the preheating chamber 1 14, via U-shaped frames 17. The output end of each adjustable telescopic rod 18 extends into the interior of the box 1 and is connected to a support frame 9. Tensioning wheels 1 10 and 2 20 are respectively installed at both ends of the support frame 9 via rotating shafts.

[0061] A tension sensor 19 is installed at the connection between the output end of each telescopic rod 18 and the support frame 9.

[0062] At the connection points between the heating and curing chamber 6 and the second preheating chamber 15, and between the second preheating chamber 15 and the first preheating chamber 14, adjustable telescopic rods 18 are installed on the outer wall of the housing 1 via U-shaped frames 17. The design of the U-shaped frames 17 allows the adjustable telescopic rods 18 to be securely fixed to the outer wall of the housing 1, while also facilitating the adjustment of the telescopic rods 18's extension and retraction.

[0063] The output end of each adjusting telescopic rod 18 extends into the interior of the housing 1 and connects to the support frame 9. The design of the adjusting telescopic rod 18 allows it to extend and retract within a certain range, thereby achieving precise adjustment of the position of the support frame 9. The extension and retraction of the adjusting telescopic rod 18 can be performed through an external control device, ensuring convenient and accurate operation.

[0064] Tensioner 10 and tensioner 20 are mounted on both ends of the support frame 9 via rotating shafts. The tensioner 10 and tensioner 20 are designed to maintain tension, ensuring that slack or slippage does not occur during operation. The rotating shafts allow the tensioner 10 and tensioner 20 to rotate flexibly to adapt to different needs.

[0065] A tension sensor 19 is installed at the connection point between the output end of each telescopic rod 18 and the support frame 9. The tension sensor 19 is used to monitor the magnitude of the tension applied to the support frame 9 by the telescopic rod 18 in real time and transmit the monitoring data to the control system. Through the feedback from the tension sensor 19, the control system can precisely control the extension and retraction of the telescopic rod 18 to ensure that the position of the support frame 9 is always in the optimal state.

[0066] When this application embodiment is used,

[0067] Feeding the film tape body: The Teflon film tape body 8 to be cured is introduced into the device through the feed port 22 at one end of the housing 1. The film tape body 8 passes sequentially through the guide roller shaft 13 in the top groove 25 of the support plate 3 16 in the preheating chamber 1, the guide roller shaft 13 in the top groove 25 of the support plate 2 3 in the preheating chamber 2, and finally reaches the heating roller shaft 4 in the top groove 25 of the support plate 5 in the heating and curing chamber 6. During the feeding process of the film tape body 8, the adjusting telescopic rod 18 is in the initial state, and the tensioning roller 10 and tensioning roller 20 maintain a certain initial tension on the film tape body 8 to ensure that the film tape body 8 remains flat during the transmission process and does not become loose or wrinkled.

[0068] Preheating treatment:

[0069] First preheating (preheating chamber 14): After the film tape body 8 enters the preheating chamber 14, it moves under the guidance of the guide roller shaft 13. The temperature sensor 2 in this chamber monitors the temperature in real time and feeds the data back to the control system. The control system controls the relevant heating elements (if any) to work according to the set target temperature, so that the preheating chamber 14 is kept at a suitable low temperature, and the film tape body 8 is preheated to reach a suitable processing temperature in preparation for subsequent curing.

[0070] Second preheating (preheating chamber two 15): The film tape body 8, which has been preheated in preheating chamber one 14, continues to move forward and enters preheating chamber two 15. Guided by the guide roller shaft 13, it moves in real time. The temperature sensor 2 inside preheating chamber two 15 monitors the temperature in real time, and the control system controls the heating element to maintain a medium temperature in the chamber, further preheating the film tape body 8 and ensuring that its temperature rises gradually to avoid coating quality problems caused by sudden temperature changes.

[0071] Heating and curing process: The preheated film tape body 8 enters the heating and curing chamber 6 and is placed on the heating roller 4. The electric heating rod 26 operates, conducting heat to the film tape body 8 through the heating roller 4. Simultaneously, the infrared heater 27 at the top of the heating and curing chamber 6 emits infrared rays, using infrared radiation heating technology to rapidly and uniformly heat the coating of the film tape body 8. During this process, the temperature sensor 2 inside the heating and curing chamber 6 monitors the temperature in real time and feeds the data back to the control system. The control system adjusts the power of the electric heating rod 26 and the infrared heater 27 in real time according to the set target temperature to maintain a constant temperature inside the heating and curing chamber 6, allowing the coating of the film tape body 8 to cure rapidly and uniformly at high temperature.

[0072] Temperature Distribution Optimization: Due to the high temperature inside the heating and curing chamber 6, hot air flows from the heating and curing chamber 6 to the preheating chamber 15 through return pipe 24, providing some heat to the preheating chamber 15 and achieving rational heat utilization. Simultaneously, the hot air in the preheating chamber 15 flows to the preheating chamber 14 through return pipe 23, further providing heat to the preheating chamber 14. The insulation sleeves on the outside of return pipes 24 and 23 effectively reduce heat loss during transmission, ensuring that hot air can flow effectively between the chambers, optimizing the temperature distribution within the device, avoiding temperature dead zones, and improving curing efficiency and quality.

[0073] Tension Adjustment: Throughout the entire transmission and curing process of the film tape body 8, the tension sensor 19 monitors in real time the tension applied to the support frame 9 by the adjusting telescopic rod 18 and transmits the data to the control system. When the tension of the film tape body 8 changes (e.g., due to temperature changes, film characteristics, etc.), the control system automatically adjusts the extension / retraction of the adjusting telescopic rod 18 based on the data fed back by the tension sensor 19. By adjusting the extension / retraction of the telescopic rod 18, the support frame 9 is moved, thereby adjusting the positions of tension roller 10 and tension roller 20, and adjusting the tension of the film tape body 8 in real time to ensure that it maintains a suitable tension throughout the curing process without slack or slippage.

[0074] Discharge: The Teflon film tape body 8, which has undergone heat curing treatment, is discharged from the discharge port 21 at the other end of the box 1 and enters the subsequent processing or packaging stage.

[0075] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0076] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0077] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0078] 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 Teflon film tape coating curing device, comprising a housing (1) and a film tape body (8), characterized in that: Inside the box (1), from bottom to top, are fixed a first bearing plate (5), a second bearing plate (3), and a third bearing plate (16). Above the first bearing plate (5), the second bearing plate (3), and the third bearing plate (16), the box (1) is respectively provided with a heating and curing chamber (6), a second preheating chamber (15), and a first preheating chamber (14). Heating rollers (4) are evenly installed inside the groove (25) at the top of the first bearing plate (5). An electric heating rod (26) is embedded, and an infrared heater (27) is uniformly installed at the top of the interior of the heating and curing chamber (6). A return pipe one (24) and a return pipe two (23) are uniformly installed on both sides of the box body (1). The two ends of the return pipe one (24) extend into the interior of the heating and curing chamber (6) and the preheating chamber two (15), respectively, and the two ends of the return pipe two (23) extend into the interior of the preheating chamber two (15) and the preheating chamber one (14), respectively. On the outer wall of the box (1) at the connection between the heating curing chamber (6) and the second preheating chamber (15) and the first preheating chamber (14), there are adjustable telescopic rods (18) installed by U-shaped frames (17). The output end of each of the adjustable telescopic rods (18) extends into the interior of the box (1) and is connected to a support frame (9). Tensioning wheel one (10) and tensioning wheel two (20) are respectively installed at both ends of the support frame (9) through a rotating shaft.

2. The Teflon film tape coating curing device according to claim 1, characterized in that: The box (1) has an inlet (22) at the top of one end for the film tape body (8) to enter, and an outlet (21) at the bottom of the other end for the film tape body (8) to exit. The outer side of the box (1) is uniformly provided with a heat-insulating outer protective layer (7).

3. The Teflon film tape coating curing device according to claim 1, characterized in that: The heating roller shaft (4) has a cavity (11) inside for accommodating the electric heating rod (26), and the surface of the heating roller shaft (4) is provided with a high-temperature resistant anti-slip layer (12).

4. The Teflon film tape coating curing device according to claim 1, characterized in that: The top of the second (3) and the third (16) bearing plates are also provided with grooves (25), and guide roller shafts (13) are uniformly arranged inside the grooves (25).

5. The Teflon film tape coating curing device according to claim 1, characterized in that: A tension sensor (19) is installed at the connection between the output end of each of the aforementioned telescopic rods (18) and the support frame (9).

6. The Teflon film tape coating curing device according to claim 1, characterized in that: Temperature sensors (2) are installed inside the heating curing chamber (6), the second preheating chamber (15), and the first preheating chamber (14).

7. The Teflon film tape coating curing device according to claim 1, characterized in that: Both the first return pipe (24) and the second return pipe (23) are covered with heat insulation sleeves.