High frequency heat sealing edge device for long-acting anti-ultraviolet puncture-proof tarpaulin processing

Abstract

The utility model relates to functional canopy edge sealing equipment technical field, including support pedestal, and the support pedestal is sequentially arranged with feeding and taking, tension adjustment, positioning deviation rectification, transfer, high frequency heat sealing host computer, secondary compression setting, cooling protection and electrical control unit. The device uses high frequency electric field to make canopy internal heat fusion, avoids surface layer ultraviolet resistant coating high temperature aging, adjusts electrode position, adapts to different width canopy, guarantees stable conveying, accurate edge sealing through tension control and deviation rectification structure, matches floating pressure and secondary rolling setting, improves edge sealing firmness, is equipped with water cooling, air cooling double heat dissipation structure, guarantees electrode stable operation and accelerates product cooling. The compact layout of each functional unit of complete machine, smooth process connection, high degree of automation effectively solve the traditional equipment processing defects, can satisfy the large-scale, high-quality edge sealing processing demand of the special canopy.

Description

Technical Field

[0001] This invention relates to the field of functional tarpaulin edge sealing equipment, specifically to a high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins. Background Technology

[0002] Long-lasting UV-resistant and puncture-proof tarpaulins are widely used in many fields such as outdoor warehousing, logistics covering, site fencing, and outdoor facility protection due to their excellent weather resistance and protective properties. Market demand continues to increase, and the industry's requirements for the quality of tarpaulin edge sealing, production efficiency, and retention of finished product performance are also constantly improving.

[0003] Currently, the industry generally uses traditional hot-press sealing equipment for edge sealing of this type of special tarpaulin. This equipment has a simple structural design, and the heat sealing method is mostly external contact heating, where heat is directly applied to the tarpaulin surface during operation. However, long-lasting UV-resistant and puncture-resistant tarpaulins have a special UV-resistant coating. High surface temperatures will directly cause the coating to age, fail, discolor, and peel, severely damaging the core performance of the tarpaulin.

[0004] Meanwhile, the heat-sealing electrodes of existing edge-sealing equipment are mostly fixed structures, which cannot be flexibly adjusted according to the width of the tarpaulin. Each machine can only process a single specification of product, resulting in poor equipment versatility. During the conveying stage, the tarpaulin lacks a refined tension adjustment and positioning correction structure, leading to frequent problems such as tension imbalance, fabric offset, and slippage during the conveying process. This directly causes edge-sealing position deviations, edge wrinkles, and makes it difficult to meet processing accuracy standards.

[0005] In edge sealing, traditional equipment only performs a single heat seal, resulting in limited bonding strength. During use, the sealed edges are prone to peeling and curling, significantly reducing product lifespan. High-frequency heat sealing equipment also commonly suffers from poor electrode heat dissipation; prolonged high temperatures can lead to electrode deformation and unstable equipment operation. Furthermore, the edge sealing relies on natural cooling after heat sealing, resulting in a long cooling cycle that restricts the overall production line's processing efficiency. Additionally, the processing area lacks protective structures, making it susceptible to external debris and airflow.

[0006] Furthermore, the existing equipment suffers from an unreasonable layout of its various process units, resulting in uneven fabric conveying and a tendency for axial movement of the fabric rolls during loading and unloading. Insufficient protection of mechanical transmission components also leads to a high failure rate. Moreover, most equipment has a low level of automation, requiring extensive manual operation for processes such as feeding, edge sealing, and winding, resulting in high labor intensity, poor production continuity, and an inability to adapt to current large-scale, automated production models.

[0007] The existing technology has the above-mentioned defects. Therefore, there is a need for a high-frequency heat sealing device that can protect the functional coating of tarpaulin, adapt to multiple product specifications, have high processing precision, strong edge sealing, good heat dissipation and cooling effect, and high degree of automation, so as to meet the needs of batch high-quality processing of long-lasting UV-resistant and puncture-resistant tarpaulins. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a high-frequency heat sealing edge-sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins. This device solves problems such as limited compatibility with existing tarpaulin edge-sealing equipment, easy damage to the UV-resistant coating due to external heating, easy conveying deviation and wrinkling, poor sealing accuracy, easy delamination and curling of edges during single heat sealing, poor electrode heat dissipation and slow cooling, unreasonable equipment layout, high failure rate, low degree of automation, and difficulty in meeting the needs of large-scale high-quality processing.

[0009] To achieve the above objectives, the present invention provides the following technical solution: A high-frequency heat sealing edge sealing device for processing long-lasting UV-resistant and puncture-proof tarpaulins includes a support platform, on which are respectively provided a loading and unloading unit, a tension adjustment unit, a positioning and correction unit, a transfer and conveying unit, a high-frequency heat sealing main unit, a secondary pressing and shaping unit, a cooling and protection unit, and an electrical control unit.

[0010] As an optimized solution, the high-frequency heat sealing host unit includes a high-frequency heat sealing box, which is a square box with an upward protrusion in the middle and openings at the lower end and both horizontal ends. The lower end of the high-frequency heat sealing box is fixed to the middle of the upper surface of the support base.

[0011] As an optimized solution, an output power supply module is fixed to the protruding part in the middle of the upper surface of the high-frequency heat sealing box, and a lifting seat is raised and lowered on the inner top surface of the high-frequency heat sealing box. A high-frequency oscillator is fixed in the middle of the upper surface of the lifting seat.

[0012] As an optimized solution, the lower surface of the lifting seat is fixed with eight horizontally extending upper electrodes. The eight upper electrodes are divided into two longitudinally symmetrical groups, with four upper electrodes in each group arranged at equal intervals. The output power supply module is connected to the eight upper electrodes and the high-frequency oscillator for power supply.

[0013] As an optimized solution, the high-frequency heat sealing host unit also includes two symmetrically arranged, longitudinally sliding insulating bases, each with a power supply base fixed on its upper surface and a transfer water storage tank fixed on its upper surface.

[0014] As an optimized solution, a horizontally extending lower electrode is fixed in the middle of the upper surface of the power supply base. The length of the lower electrode is the same as the length of the upper electrode, and the power supply base is connected to the lower electrode for power supply.

[0015] As an optimized solution, each of the lower electrodes is provided with a circulating water cooling pipe on each of its longitudinal sides, and both ends of each circulating water cooling pipe are bent downwards and fixedly connected to the intermediate water storage tank.

[0016] As an optimized solution, the support pedestal is a horizontally grounded square base.

[0017] As an optimized solution, the loading and unloading unit includes a loading unfolding component and a unloading winding component. The loading unfolding component and the unloading winding component have the same structure and are symmetrically arranged at both ends of the upper surface of the support base.

[0018] As an optimized solution, the feeding and unfolding assembly includes two longitudinally symmetrical take-up and unfolding support frames. Each take-up and unfolding support frame has a triangular limiting frame fixed on its longitudinal inner sidewall. Three detachable limiting baffles are fixed between the two triangular limiting frames. A take-up and unfolding fabric roller is rotatably installed between the three limiting baffles.

[0019] As an optimized solution, a take-up drive motor is fixed on the longitudinal outer wall of each of the take-up support frames. The output shaft end of the take-up drive motor passes through the take-up support frame and the triangular limiting frame, and is detachably fixed to the side end face of the take-up fabric roller.

[0020] As an optimized solution, the upper surface of the support base is also fixed with two transversely symmetrical extended mounting frames. The extended mounting frames are U-shaped frames with their openings facing downwards, and the two extended mounting frames are located between the feeding unfolding assembly and the unloading winding assembly.

[0021] As an optimized solution, each of the extended mounting frames has a side-sealing cover plate fixed in the opening on the side near the take-up and release rollers, and a rotation clearance opening is provided at the transverse edge of the upper surface of the extended mounting frame on the side near the take-up and release rollers.

[0022] As an optimized solution, the tension adjustment unit is provided in two sets, and the two sets of tension adjustment units are respectively provided on the two extended mounting frames. Each set of tension adjustment units includes two symmetrical triangular support seats, which are respectively provided on the longitudinal sides of the rotation clearance opening and fixed on the upper surface of the extended mounting frame.

[0023] As an optimized solution, a triangular rotating plate is rotatably mounted on the longitudinal inner sidewall of each of the triangular support seats, and three centrally symmetrical tension adjustment rollers are rotatably mounted between two of the triangular rotating plates.

[0024] As an optimized solution, one of the triangular support bases has a rotation drive motor on its longitudinal side. The rotation drive motor is fixed on the upper surface of the extended mounting bracket, and the end of the output shaft of the rotation drive motor passes through the triangular support base and is fixed to the center of the side end face of the corresponding triangular rotating plate.

[0025] As an optimized solution, the high-frequency heat sealing box is located between the two extended mounting frames and one end is connected to one of the extended mounting frames. The upper end of the lateral opening of the high-frequency heat sealing box is higher than the transfer conveyor roller by a certain height.

[0026] As an optimized solution, four electrically controlled telescopic cylinders are fixed on the inner top surface of the high-frequency heat sealing box in pairs, and the telescopic ends of the four electrically controlled telescopic cylinders are fixed to the upper surface of the lifting seat.

[0027] As an optimized solution, the lifting seat is located directly below the output power supply module, and a corrugated sleeve is fixedly connected between the high-frequency oscillator and the output power supply module. The corrugated sleeve contains an output pipeline connecting the high-frequency oscillator and the output power supply module.

[0028] As an optimized solution, two transversely symmetrical longitudinal threaded rods are rotatably installed on each longitudinal inner wall of the high-frequency heat sealing box. The ends of the two longitudinally opposite threaded rods are rotatably connected, and the insulating base is slidably sleeved on the two transversely symmetrical longitudinal threaded rods and threadedly connected to them.

[0029] As an optimized solution, the lower surface of each upper electrode is machined with anti-slip teeth, and the upper surface of each lower electrode is also machined with the same anti-slip teeth.

[0030] As an optimized solution, each of the intermediate water storage tanks is provided with an inlet and outlet water tank below it, and each inlet and outlet water tank is connected to an external inlet and outlet water pipe. The end of the inlet and outlet water pipe passes through the longitudinal side wall of the high-frequency heat sealing box and extends to its outside. Each inlet and outlet water pipe is provided with an inlet and outlet water regulating valve in the middle section.

[0031] As an optimized solution, a hot and cold partition is fixed in the middle of the intermediate water storage tank, which divides the interior of the intermediate water storage tank into a horizontally symmetrical cold water supply area and a hot water return area.

[0032] As an optimized solution, the same hot and cold baffles are also fixed inside the inlet and outlet water tanks and the inlet and outlet water pipes.

[0033] As an optimized solution, a water supply pump and a return pump connected to the water supply tank are fixed on the horizontal sides of the upper surface of each of the inlet and outlet water tanks, respectively. A water supply pipe is fixed to the upper end of the water supply pump, and the end of the water supply pipe is fixedly connected to the intermediate water storage tank and communicates with the cold water supply area. A return pipe is fixed to the upper end of the return pump, and the end of the return pipe is fixedly connected to the intermediate water storage tank and communicates with the hot water return area.

[0034] As an optimized solution, the positioning and correction unit is provided in two sets and is respectively located on the two extended mounting brackets. The positioning and correction unit is located on one side of the tension adjustment unit.

[0035] As an optimized solution, each of the extended mounting brackets has a longitudinally extending sliding groove on its upper surface, and two electrically driven guide rails are fixed on the transverse inner walls on both sides of each sliding groove.

[0036] As an optimized solution, each set of positioning and correction units includes two longitudinally symmetrical electric slides, which are slidably mounted between two electric drive guide rails.

[0037] As an optimized solution, each of the electric slides is fixed with a lifting and telescopic cylinder on its upper surface, and the upper telescopic end of the lifting and telescopic cylinder has a side correction wheel rotating on it.

[0038] As an optimized solution, the transfer and conveying unit is provided in two sets and is respectively installed on the two extended mounting frames. The transfer and conveying unit is located on one side of the positioning and correction unit.

[0039] As an optimized solution, each set of the transfer and conveying units includes two longitudinally symmetrical transmission boxes, and several transfer and conveying rollers are rotatably installed between the two transmission boxes. The several transfer and conveying rollers are arranged at equal intervals in the transverse direction. The transmission box is equipped with a sprocket transmission mechanism that drives each transfer and conveying roller to rotate synchronously. During the processing, the tarpaulin alternately passes around each transfer and conveying roller.

[0040] As an optimized solution, the high-frequency heat sealing host unit is provided with two sets of floating pressing mechanisms on its lateral sides. Each set of floating pressing mechanisms includes two longitudinally symmetrical swing bases, which are rotatably mounted on the longitudinal inner wall of the high-frequency heat sealing box.

[0041] As an optimized solution, a swing drive motor is fixed on the longitudinal outer wall of the high-frequency heat sealing box, facing the swing base. The output shaft end of the swing drive motor passes through the high-frequency heat sealing box and is fixed to the side end face of one of the swing bases.

[0042] As an optimized solution, each of the swing bases is fixed with a telescopic swing arm on its upper end face, and a rotating mounting seat is fixed to the upper telescopic end of the telescopic swing arm. A floating pressure roller is rotatably provided between two longitudinally opposite rotating mounting seats.

[0043] As an optimized solution, the secondary pressing and shaping unit includes two symmetrical shaping rollers, which are located on one side of the high-frequency heat sealing box and extend longitudinally.

[0044] As an optimized solution, two disc bases are fixed at both ends of the longitudinal direction of each shaping roller, and three centrally symmetrical side telescopic cylinders are fixed on the longitudinal inner wall of each disc base. Rolling shaping rings are fixed at the telescopic ends of the three side telescopic cylinders.

[0045] As an optimized solution, the cooling protection unit includes an air-cooled protective box, which is a square box with openings on both sides and the bottom. The air-cooled protective box is sandwiched between the high-frequency heat sealing box and the extended mounting frame, and the bottom end of the air-cooled protective box is fixed to the upper surface of the support base.

[0046] As an optimized solution, the air-cooled protective box has a cold air flow channel inside, and two symmetrical inclined air outlets are opened on the longitudinal inner wall of each side of the air-cooled protective box. The two inclined air outlets are at a 90° angle to each other and are connected to the cold air flow channel.

[0047] As an optimized solution, an air inlet box is fixed in the middle of the upper surface of the air-cooled protective box, a compressor fan is provided on the top of the air inlet box, a circular air inlet is opened in the middle of the upper surface of the air-cooled protective box, and an air inlet filter is fixed inside the air inlet.

[0048] As an optimized solution, two transversely symmetrical support rollers are rotatably installed between the longitudinal inner walls on both sides of the air-cooled protective box, and the support rollers are positioned between the two vertically symmetrical inclined air outlets in terms of height.

[0049] As an optimized solution, the electrical control unit includes a control host, which is fixed to the longitudinal outer wall of the high-frequency heat sealing box.

[0050] Compared with the prior art, the beneficial effects of the present invention are: 1. Highly adaptable, capable of meeting the processing needs of tarpaulins of different specifications. This equipment moves the insulating base via a longitudinal threaded rod, allowing for flexible adjustment of the lower electrode position to match different groups of upper electrodes. It can be applied to the edge sealing of long-lasting UV-resistant and puncture-proof tarpaulins of various widths, making it widely applicable. At the same time, the tensioning, correction, and pressing mechanisms are all flexibly adjustable, allowing for adjustment of the operating status according to the tarpaulin material and thickness, resulting in good processing compatibility.

[0051] 2. A reasonable heat-sealing process is adopted to effectively protect the functional coating of the tarpaulin. The high-frequency electric field internal heat melting method relies on the polarized friction of the tarpaulin itself to achieve edge sealing. The heat is conducted from the inside of the material to the outside, which is different from the traditional external heating mode. The high-frequency electric field internal heat melting method can completely avoid the problems of aging, failure, and discoloration of the anti-ultraviolet coating on the surface of the tarpaulin due to local high temperature, and fully preserve the original anti-ultraviolet and puncture-proof core properties of the tarpaulin, ensuring the quality of the finished product.

[0052] 3. Real-time tension and attitude control significantly improves machining accuracy. The tension adjustment unit switches the contact position of the tension rollers via a triangular rotating plate to adjust the tarpaulin conveying tension in real time. This prevents the tarpaulin from loosening and wrinkling, and also avoids excessive stretching that could damage the fabric and surface coating. Combined with the positioning and correction unit, it can promptly correct the lateral deviation of the tarpaulin, ensuring that the tarpaulin travels in a straight line throughout the process. The anti-slip serrations on the electrode surface further prevent the fabric from slipping during processing, ensuring that the sealing position is accurate and neat.

[0053] 4. Multiple pressing and shaping mechanisms ensure a sturdy and durable edge sealing structure. The high-frequency heat sealing box is equipped with a floating pressing mechanism, which can press down to make the tarpaulin and electrodes fit tightly together, improving the heat sealing effect. After heat sealing, a secondary pressing and shaping unit is added. The edge sealing area is rolled and shaped again by shaping rollers and adjustable rolling and shaping rings to compact the adhesive gaps. This effectively solves problems such as delamination, edge lifting, and warping after the edge sealing cools down, greatly improving the firmness and flatness of the edge sealing area and extending the service life of the tarpaulin.

[0054] 5. Utilizing both water and air cooling for temperature control ensures stable equipment operation while improving processing efficiency. Each lower electrode is equipped with an independent circulating water cooling structure, which continuously removes the working heat of the electrode through the partitioned water channel, avoiding high-temperature deformation and performance degradation of the electrode, and ensuring continuous and stable operation of high-frequency heat sealing; the cooling protection unit adopts an angled oblique air outlet structure, which quickly cools the sealing area that has just been heat sealed from multiple directions, accelerates material curing, shortens process intervals, and improves overall processing efficiency. At the same time, the air cooling structure can protect the processing area and reduce interference from the external environment.

[0055] 6. The reasonable structural layout ensures smooth equipment operation. All functional units of the machine are arranged sequentially along the tarpaulin conveying direction. The processes of loading and unloading, tensioning, correction, conveying, heat sealing, shaping, and cooling are connected and integrated. The intermediate conveyor roller group can smoothly transfer the tarpaulin, ensuring smooth material conveying throughout the process. The loading and unloading components are equipped with triangular limit frames and detachable limit baffles to axially limit the fabric roll and prevent the tarpaulin from moving during material unloading and rewinding. All transmission and rotation structures are well protected, resulting in a low equipment failure rate.

[0056] 7. High degree of automation and easy operation The entire system is centrally controlled by an electrical control unit, with all components such as motors, cylinders, water pumps, fans, and regulating valves operating in a coordinated and automated manner. From tarpaulin feeding and processing to finished product winding, the entire process is continuous. Only parameter adjustments and mechanism alignment based on processing requirements are needed before operation; subsequent manual intervention is minimal, reducing labor intensity and making it suitable for large-scale continuous production. Attached Figure Description

[0057] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0058] Figure 1 This is a schematic diagram of the overall external structure of the present invention in the main viewing direction; Figure 2 This is a schematic diagram of the overall external structure of the present invention from a top-down perspective; Figure 3 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction; Figure 4 This is an isometric schematic diagram of the three-dimensional structure of the present invention; Figure 5 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA in the middle; Figure 6 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the middle BB line; Figure 7 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the CC line; Figure 8 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the DD line in the middle; Figure 9 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the EE line; Figure 10 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the FF line; Figure 11 For the present invention along Figure 3 A half-section diagram of the three-dimensional structure cut along the GG line.

[0059] In the diagram: 1-Supporting platform, 2-Retracting support frame, 3-Triangular limit frame, 4-Limiting baffle, 5-Retracting cloth roller, 6-Retracting drive motor, 7-Extended mounting frame, 8-Side sealing cover, 9-Rotation clearance opening, 10-Triangular support seat, 11-Triangular rotating plate, 12-Tension adjusting roller, 13-Rotation drive motor, 14-Sliding groove, 15-Electric drive guide rail, 16-Electric slide, 17-Lifting telescopic cylinder, 18-Side correction wheel, 19-Transmission box, 20-Transfer conveyor roller, 21-High frequency heat sealing box, 22-Control host, 23-Output power supply module, 24-Lifting seat, 25-High frequency oscillator, 26-Corrugated sleeve, 27-Electrically controlled telescopic cylinder, 28-Upper electrode, 29-Insulating base, 30-Longitudinal threaded rod, 31-Power supply base, 32 - Transfer water storage tank, 33- Lower electrode, 34- Circulating water cooling pipe, 35- Inlet / outlet water tank, 36- Inlet / outlet water pipe, 37- Inlet / outlet water regulating valve, 38- Upper water pump, 39- Return pump, 40- Upper water pipe, 41- Return pipe, 42- Swing base, 43- Swing drive motor, 44- Telescopic swing arm, 45- Rotary mounting seat, 46- Floating pressure roller, 47- Shaping pressure roller, 48- Disc base, 49- Side telescopic cylinder, 50- Rolling shaping ring, 51- Lifting slide, 52- Lifting slide, 53- Rolling drive motor, 54- Lifting control module, 55- Vertical threaded rod, 56- Air-cooled protective box, 57- Cold air channel, 58- Angled air outlet, 59- Air inlet box, 60- Compressor fan, 61- Air inlet, 62- Air inlet filter, 63- Support roller. Detailed Implementation

[0060] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0061] like Figures 1 to 11 As shown, a high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-proof tarpaulin includes a support base 1, which is a horizontally grounded square base. The support base 1 is equipped with a loading and unloading unit, a tension adjustment unit, a positioning and correction unit, a transfer and conveying unit, a high-frequency heat sealing main unit, a secondary pressing and shaping unit, a cooling and protection unit, and an electrical control unit.

[0062] The loading and unloading unit includes a loading unfolding component and a unloading winding component. The loading unfolding component and the unloading winding component have the same structure and are symmetrically arranged at both ends of the upper surface of the support base 1.

[0063] The feeding and unfolding assembly includes two longitudinally symmetrical take-up and unfolding support frames 2. Each take-up and unfolding support frame 2 has a triangular limiting frame 3 fixed on its longitudinal inner side wall. Three detachable limiting baffles 4 are fixed between the two triangular limiting frames 3. Take-up and unfolding fabric rollers 5 are rotatably installed between the three limiting baffles 4.

[0064] Each take-up and release support frame 2 has a take-up and release drive motor 6 fixed on its longitudinal outer side wall. The output shaft end of the take-up and release drive motor 6 passes through the take-up and release support frame 2 and the triangular limit frame 3, and is detachably fixed to the side end face of the take-up and release fabric roller 5.

[0065] Two horizontally symmetrical extended mounting frames 7 are also fixed on the upper surface of the support base 1. The extended mounting frames 7 are U-shaped frames with the opening facing downwards. The two extended mounting frames 7 are located between the feeding unfolding component and the unloading winding component.

[0066] Each extended mounting frame 7 has a side sealing cover plate 8 fixed in the opening on the side near the take-up and release roller 5, and a rotation clearance opening 9 is provided at the transverse edge of the upper surface of the extended mounting frame 7 near the take-up and release roller 5.

[0067] Two sets of tension adjustment units are provided, and the two sets of tension adjustment units are respectively located on two extension mounting frames 7. Each set of tension adjustment units includes two symmetrical triangular support seats 10. The two triangular support seats 10 are located on the longitudinal sides of the rotation clearance opening 9 and fixed on the upper surface of the extension mounting frame 7.

[0068] Each triangular support 10 has a triangular rotating plate 11 rotatably mounted on its longitudinal inner sidewall, and three centrally symmetrical tension adjusting rollers 12 are rotatably mounted between two triangular rotating plates 11.

[0069] One of the triangular support bases 10 has a rotation drive motor 13 on its longitudinal side. The rotation drive motor 13 is fixed on the upper surface of the extended mounting bracket 7. The end of the output shaft of the rotation drive motor 13 passes through the triangular support base 10 and is fixed to the center of the side end face of the corresponding triangular rotating plate 11.

[0070] During operation, the tarpaulin passes through the middle of the three tension adjustment rollers 12. The rotation of the drive motor 13 drives the triangular rotating plate 11 to rotate, so that the different tension adjustment rollers 12 come into contact with the upper or lower surface of the tarpaulin, thereby achieving tension adjustment.

[0071] The positioning and correction unit is provided in two sets and is respectively installed on two extended mounting brackets 7. The positioning and correction unit is located on the lateral side of the tension adjustment unit.

[0072] Each extended mounting bracket 7 has a longitudinally extending sliding groove 14 on its upper surface, and two electrically driven guide rails 15 are fixed on the transverse inner walls on both sides of each sliding groove 14.

[0073] Each positioning and correction unit includes two longitudinally symmetrical electric slides 16, which are slidably mounted between two electrically driven guide rails 15.

[0074] Each electric slide block 16 has a lifting telescopic cylinder 17 fixed on its upper surface, and a side correction wheel 18 rotates at the upper telescopic end of the lifting telescopic cylinder 17.

[0075] Two sets of transfer and conveying units are provided and are respectively installed on two extended mounting frames 7. The transfer and conveying units are located on one side of the positioning and correction unit.

[0076] Each transfer conveyor unit includes two longitudinally symmetrical transmission boxes 19. Several transfer conveyor rollers 20 are rotatably installed between the two transmission boxes 19. The transfer conveyor rollers 20 are arranged at equal intervals in the transverse direction. The transmission box 19 is equipped with a sprocket transmission mechanism that drives each transfer conveyor roller 20 to rotate synchronously. During the processing, the tarpaulin alternately passes around each transfer conveyor roller 20.

[0077] The high-frequency heat sealing main unit includes a high-frequency heat sealing box 21, which is a square box with an upward protrusion in the middle. The high-frequency heat sealing box 21 has openings at its lower end and both horizontal ends. The lower end of the high-frequency heat sealing box 21 is fixed to the middle of the upper surface of the support base 1. The high-frequency heat sealing box 21 is located between two extended mounting frames 7 and one end is connected to one of the extended mounting frames 7. The upper end of the horizontal opening of the high-frequency heat sealing box 21 is higher than the transfer conveyor roller 20 by a certain height.

[0078] The electrical control unit includes a control host 22, which is fixed on the longitudinal outer wall of the high-frequency heat sealing box 21.

[0079] The high-frequency heat sealing box 21 has an output power supply module 23 fixedly mounted on the raised part in the middle of its upper surface. The high-frequency heat sealing box 21 has a lifting seat 24 that is raised and lowered inside. The lifting seat 24 is located directly below the output power supply module 23. The high-frequency oscillator 25 is fixedly mounted on the middle of the upper surface of the lifting seat 24. A corrugated sleeve 26 is fixedly connected between the high-frequency oscillator 25 and the output power supply module 23. The corrugated sleeve 26 has an output pipeline connecting the high-frequency oscillator 25 and the output power supply module 23 inside.

[0080] Four electrically controlled telescopic cylinders 27 are fixed on the inner top surface of the high-frequency heat sealing box 21 in pairs. The telescopic ends of the four electrically controlled telescopic cylinders 27 are fixed to the upper surface of the lifting seat 24.

[0081] The lower surface of the lifting seat 24 is fixed with eight horizontally extending upper electrodes 28. The eight upper electrodes 28 are divided into two longitudinally symmetrical groups, with four upper electrodes 28 in each group arranged at equal intervals. The output power supply module 23 is connected to the eight upper electrodes 28 respectively for power supply.

[0082] The high-frequency heat sealing main unit also includes two longitudinally symmetrical insulating bases 29, which are square bases.

[0083] Two transversely symmetrical longitudinal threaded rods 30 are rotatably installed on each longitudinal inner wall of the high-frequency heat sealing box 21. The ends of the two longitudinally opposite threaded rods 30 are rotatably connected. The insulating base 29 is slidably sleeved on the two transversely symmetrical longitudinal threaded rods 30 and threadedly connected to them. The four longitudinal threaded rods 30 can be controlled to rotate individually by the control host 22.

[0084] Each insulating base 29 has a power supply base 31 fixed on its upper surface, and a transfer water storage tank 32 fixed on its upper surface.

[0085] A horizontally extending lower electrode 33 is fixed in the middle of the upper surface of the power supply base 31. The length of the lower electrode 33 is the same as the length of the upper electrode 28. The power supply base 31 is connected to the lower electrode 33 for power supply.

[0086] By controlling the rotation of the longitudinal threaded rod 30, the insulating base 29 is moved longitudinally to adjust its position, so that the lower electrode 33 can be matched with different upper electrodes 28, thereby adapting to the edge sealing heat sealing of tarpaulins of different widths.

[0087] A high-frequency electric field can be generated between the upper electrode 28 and the lower electrode 33. The high-frequency electric field is used to polarize and generate heat through friction of the polymer molecules inside the tarpaulin, which melts uniformly from the inside out. This is different from external heating and avoids local high-temperature aging of the surface anti-UV coating.

[0088] Each lower electrode 33 has a circulating water cooling pipe 34 on each of its longitudinal sides. Both ends of each circulating water cooling pipe 34 are bent downwards and fixedly connected to the intermediate water storage tank 32. A hot and cold baffle is fixed in the middle of the intermediate water storage tank 32. The hot and cold baffle divides the interior of the intermediate water storage tank 32 into a horizontally symmetrical cold water supply area and a hot water return area.

[0089] Each intermediate water storage tank 32 is provided with an inlet / outlet water tank 35 below it. Each inlet / outlet water tank 35 is connected to an inlet / outlet water pipe 36. The end of the inlet / outlet water pipe 36 passes through the longitudinal side wall of the high-frequency heat sealing box 21 and extends to its outside. Each inlet / outlet water pipe 36 is provided with an inlet / outlet water regulating valve 37 in the middle section.

[0090] The same hot and cold baffles are also fixed inside the inlet and outlet water tanks 35 and the inlet and outlet water pipes 36.

[0091] Each inlet / outlet water tank 35 has a water supply pump 38 and a return pump 39 fixed on the horizontal sides of its upper surface, respectively. The water supply pump 38 has a water supply pipe 40 fixed at its upper end, and the end of the water supply pipe 40 is fixedly connected to the intermediate water storage tank 32 and connected to the cold water supply area. The return pump 39 has a return pipe 41 fixed at its upper end, and the end of the return pipe 41 is fixedly connected to the intermediate water storage tank 32 and connected to the hot water return area.

[0092] Each upper electrode 28 has anti-slip teeth machined on its lower surface, and each lower electrode 33 has the same anti-slip teeth machined on its upper surface.

[0093] Two sets of floating pressing mechanisms are provided on the horizontal sides of the high-frequency heat sealing main unit. Each set of floating pressing mechanisms includes two longitudinally symmetrical swing bases 42, which are rotatably installed on the longitudinal inner wall of the high-frequency heat sealing box 21.

[0094] A swing drive motor 43 is fixed on the longitudinal outer wall of the high-frequency heat sealing box 21, directly opposite the swing base 42. The output shaft of the swing drive motor 43 passes through the high-frequency heat sealing box 21 and is fixed to the side end face of one of the swing bases 42.

[0095] Each swing base 42 has a telescopic swing arm 44 fixed to its upper end face. The upper telescopic end of the telescopic swing arm 44 is fixed with a rotating mounting seat 45. A floating pressure roller 46 is rotatably provided between two longitudinally opposite rotating mounting seats 45.

[0096] The secondary pressing and shaping unit includes two symmetrical shaping rollers 47, which are located on one side of the high-frequency heat sealing box 21 and extend longitudinally.

[0097] Each shaping roller 47 has two circular bases 48 fixed at its longitudinal ends. Each circular base 48 has three centrally symmetrical side telescopic cylinders 49 fixed on its longitudinal inner wall. The telescopic ends of the three side telescopic cylinders 49 are fixed with rolling shaping rings 50.

[0098] Two vertically symmetrical lifting slides 51 are opened on each longitudinal outer wall of the high-frequency heat sealing box 21. A lifting slide 52 is slidably installed in each lifting slide 51. A rolling drive motor 53 is fixed on the longitudinal outer wall of each lifting slide 52. The end of the output shaft of the rolling drive motor 53 passes through the lifting slide 52 and is fixed to the center of the side end face of the disc base 48.

[0099] Each longitudinal outer wall of the high-frequency heat sealing box 21 is fixed with a lifting control module 54, which is located between two lifting slides 51.

[0100] The lifting control module 54 is externally connected to four vertical threaded rods 55. The four vertical threaded rods 55 are symmetrically arranged in pairs and located on the upper and lower sides of the lifting control module 54. The two vertical threaded rods 55 located on the same side pass through and are threadedly connected to the lifting slide 52.

[0101] The cooling protection unit includes an air-cooled protective box 56, which is a square box with openings on both sides and the bottom. The air-cooled protective box 56 is sandwiched between the high-frequency heat sealing box 21 and the extension mounting bracket 7. The bottom of the air-cooled protective box 56 is fixed to the upper surface of the support base 1.

[0102] The air-cooled protective box 56 has a cold air flow channel 57 inside. Two symmetrical inclined air outlets 58 are opened on the longitudinal inner wall of each side of the air-cooled protective box 56. The two inclined air outlets 58 are at a 90° angle to each other and are connected to the cold air flow channel 57.

[0103] An air inlet box 59 is fixed in the middle of the upper surface of the air-cooled protective box 56. A compressor fan 60 is provided on the top of the air inlet box 59. A circular air inlet 61 is opened in the middle of the upper surface of the air-cooled protective box 56. An air inlet filter 62 is fixed inside the air inlet 61.

[0104] Two transversely symmetrical support rollers 63 are rotatably installed between the longitudinal inner walls on both sides of the air-cooled protective box 56. The support rollers 63 are positioned between the two vertically symmetrical oblique air outlets 58.

[0105] When using this invention: The entire equipment relies on the support base 1 to complete the coordinated operation of various mechanisms. The tarpaulin is fed from one end, and then goes through tension adjustment, correction, conveying, heat sealing, secondary shaping, and cooling, and finally completes the winding. The entire process is uniformly controlled by the electrical control unit.

[0106] Before starting the operation, rotate the longitudinal threaded rod 30 according to the width of the tarpaulin to be processed, so that the lower electrode 33 is precisely aligned with the upper electrode 28 of the corresponding group, and the edge sealing processing size is matched; at the same time, adjust each motor, cylinder, water pump, fan and valve, set the operating parameters, and prepare for heat sealing.

[0107] First, start the loading and unloading unit. The unloading drive motor 6 of the loading and unloading assembly at one end drives the unloading and unloading cloth roller 5 to rotate, smoothly unrolling and sending out the rolled tarpaulin. The triangular limit frame 3 and the limit baffle 4 limit the cloth roll axially to prevent the tarpaulin from shifting to the left or right. The unloading and winding assembly at the other end is in standby mode and will be responsible for winding up the finished tarpaulin later.

[0108] After the tarpaulin is delivered, it enters the tension adjustment unit area, passing between three tension adjustment rollers 12. The rotating drive motor 13 drives the triangular rotating plate 11 to deflect, switching between different tension adjustment rollers 12 to make them contact the upper and lower surfaces of the tarpaulin, adjusting the running tension of the tarpaulin in real time, ensuring that the tension is appropriate during the conveying process, and avoiding loosening, wrinkles or excessive stretching that could damage the UV-resistant coating on the surface of the tarpaulin.

[0109] The tarpaulin then moves to the positioning and correction unit. The electric drive guide rail 15 drives the electric slide block 16 to move longitudinally along the sliding groove 14. In conjunction with the lifting telescopic cylinder 17, the height of the side correction wheel 18 is adjusted. The two side correction wheels 18 are limited and guided from the side of the tarpaulin to correct the lateral offset of the tarpaulin in time, ensuring that the tarpaulin moves in a straight line, laying the foundation for subsequent precise edge sealing.

[0110] After the tarpaulin has been corrected, it enters the transfer and conveying unit. The sprocket transmission mechanism inside the transmission box 19 drives each set of transfer and conveying rollers 20 to operate synchronously. The tarpaulin alternately passes around each transfer and conveying roller 20 and is smoothly transferred to the high-frequency heat sealing main unit, further stabilizing the posture of the tarpaulin.

[0111] The tarpaulin enters the core processing area of ​​the high-frequency heat sealing main unit. The electrically controlled telescopic cylinder 27 pushes the lifting seat 24 downward, bringing the upper electrode 28 closer to the lower electrode 33. The output power supply module 23 supplies power to the high-frequency oscillator 25 through the internal pipeline of the corrugated sleeve 26, forming a high-frequency electric field between the upper and lower electrodes. Under the action of the electric field, the polymer material of the tarpaulin is internally polarized and generates heat through friction, melting uniformly from the inside out to achieve edge sealing heat sealing. The anti-ultraviolet coating on the surface of the tarpaulin will not be damaged by the external high temperature throughout the process. The anti-slip serrations on the electrode surface can increase the friction force and prevent the tarpaulin from sliding and the edge sealing from misaligning.

[0112] During heat treatment, the circulating water cooling system operates synchronously: the upper water pump 38 draws cold water from the inlet and outlet water tanks 35, and delivers it to each circulating water cooling pipe 34 through the cold water supply area of ​​the intermediate storage tank 32 to continuously cool the lower electrode 33 during operation; the hot water after absorbing heat flows back to the hot water return area of ​​the intermediate storage tank 32, and is then sent back to the inlet and outlet water tanks 35 by the return pump 39. The hot and cold baffles separate the water path to ensure stable water cooling circulation and prevent the high temperature of the electrode from affecting the processing quality.

[0113] At the same time, the floating pressing mechanism on both sides is activated, the swing drive motor 43 drives the swing base 42 and the telescopic swing arm 44 to move, and the floating pressure roller 46 lightly presses the tarpaulin to make the tarpaulin and the electrode fit tightly together, improving the heat sealing performance.

[0114] The heat-sealed tarpaulin continues to be conveyed forward into the secondary pressing and shaping unit. The lifting control module 54 drives the vertical threaded rod 55 to rotate, which in turn drives the lifting slide 52 to rise and fall along the lifting slide 51, thereby adjusting the distance between the two sets of shaping pressure rollers 47. The rolling drive motor 53 drives the disc base 48 and the rolling shaping ring 50 to rotate. The side telescopic cylinder 49 finely adjusts the radial position of the rolling shaping ring 50. The two sets of shaping pressure rollers 47 arranged symmetrically above and below cooperate with the rolling shaping ring 50 to roll and compact and shape the newly heat-sealed edge again, making the edge bonding stronger and the shape more regular, preventing the problem of glue separation and edge lifting after cooling.

[0115] After the tarpaulin is shaped, it enters the air-cooled protective box 56 of the cooling and protection unit. The compressed air 60 draws in outside air, which is filtered by the air inlet filter 62 and enters the cold air channel 57 through the air inlet 61. Then it is blown out by two sets of oblique air outlets 58 at a 90° angle, which quickly cool the edge sealing area of ​​the tarpaulin from the top and bottom. The support roller 63 supports the tarpaulin to ensure that the tarpaulin moves smoothly during the air cooling process and accelerates the curing and shaping of the material at the edge sealing area.

[0116] Finally, the finished tarpaulin, after undergoing a complete set of processing steps, is subjected to secondary finishing by the positioning and correction unit and tension adjustment unit on the other side before being wound up. The winding and unwinding rollers 5 of the feeding and winding assembly at the other end then complete the winding process. The entire equipment continuously cycles through these processes to complete the high-frequency heat sealing of the tarpaulin. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and all should be covered within the scope of the claims and specification of the present invention.

Claims

1. A high-frequency heat-sealing edge-sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins, characterized in that: The system includes a support platform, on which are respectively provided a loading and unloading unit, a tension adjustment unit, a positioning and correction unit, a transfer and conveying unit, a high-frequency heat sealing main unit, a secondary pressing and shaping unit, a cooling and protection unit, and an electrical control unit. The high-frequency heat sealing main unit includes a high-frequency heat sealing box, which is a square box with an upward protrusion in the middle and openings at the lower end and both horizontal ends. The lower end of the high-frequency heat sealing box is fixed to the middle of the upper surface of the support base. The high-frequency heat sealing box has an output power supply module fixed to the protruding part in the middle of the upper surface. The high-frequency heat sealing box has a lifting seat that is raised and lowered on the inner top surface. The high-frequency oscillator is fixed in the middle of the upper surface of the lifting seat. The lower surface of the lifting seat is fixed with eight horizontally extending upper electrodes. The eight upper electrodes are divided into two longitudinally symmetrical groups, with four upper electrodes in each group arranged at equal intervals. The output power supply module is connected to the eight upper electrodes and the high-frequency oscillator for power supply. The high-frequency heat sealing host unit also includes two symmetrically arranged, longitudinally sliding insulating bases. A power supply base is fixed on the upper surface of each insulating base, and a transfer water storage tank is fixed on the upper surface of each insulating base. A horizontally extending lower electrode is fixed in the middle of the upper surface of the power supply base. The length of the lower electrode is the same as the length of the upper electrode. The power supply base is connected to the lower electrode for power supply. Each of the lower electrodes has a circulating water cooling pipe on each of its longitudinal sides, and both ends of each circulating water cooling pipe are bent downwards and fixedly connected to the intermediate water storage tank.

2. The high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 1, characterized in that: The support platform is a horizontally grounded square base; The loading and unloading unit includes a loading unfolding component and a unloading winding component. The loading unfolding component and the unloading winding component have the same structure and are symmetrically arranged at both ends of the upper surface of the support base. The feeding and unfolding assembly includes two longitudinally symmetrical take-up and unfolding support frames. Each take-up and unfolding support frame has a triangular limiting frame fixed on its longitudinal inner sidewall. Three detachable limiting baffles are fixed between the two triangular limiting frames. A take-up and unfolding fabric roller is rotatably installed between the three limiting baffles. Each of the take-up and release support frames is fixed with a take-up and release drive motor on its longitudinal outer side wall. The output shaft end of the take-up and release drive motor passes through the take-up and release support frame and the triangular limiting frame, and is detachably fixed to the side end face of the take-up and release fabric roller.

3. The high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 2, characterized in that: The upper surface of the support base is also fixed with two transversely symmetrical extended mounting frames. The extended mounting frames are U-shaped frames with their openings facing downwards. The two extended mounting frames are located between the feeding unfolding assembly and the unloading winding assembly. Each of the extended mounting frames has a side-sealing cover plate fixed in the opening on the side near the take-up and release rollers, and a rotation clearance opening is provided at the transverse edge of the upper surface of the extended mounting frame on the side near the take-up and release rollers. The tension adjustment unit is provided in two sets, and the two sets of tension adjustment units are respectively provided on the two extension mounting frames. Each set of tension adjustment units includes two symmetrical triangular support seats. The two triangular support seats are respectively provided on the longitudinal sides of the rotation clearance opening and fixed on the upper surface of the extension mounting frame. Each of the triangular support bases has a triangular rotating plate rotatably mounted on its longitudinal inner sidewall, and three centrally symmetrical tension adjusting rollers are rotatably mounted between two of the triangular rotating plates. One of the triangular support bases has a rotation drive motor on its longitudinal side. The rotation drive motor is fixed to the upper surface of the extended mounting bracket. The end of the output shaft of the rotation drive motor passes through the triangular support base and is fixed to the center of the side end face of the corresponding triangular rotating plate.

4. The high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 3, characterized in that: The high-frequency heat sealing box is located between the two extended mounting frames and one end is connected to one of the extended mounting frames; Four electrically controlled telescopic cylinders are fixed on the inner top surface of the high-frequency heat sealing box in pairs, and the telescopic ends of the four electrically controlled telescopic cylinders are fixed to the upper surface of the lifting seat. The lifting seat is located directly below the output power supply module. A corrugated sleeve is fixedly connected between the high-frequency oscillator and the output power supply module. The corrugated sleeve contains an output pipeline connecting the high-frequency oscillator and the output power supply module. Two transversely symmetrical longitudinal threaded rods are rotatably installed on each longitudinal inner wall of the high-frequency heat sealing box. The ends of the two longitudinally opposite threaded rods are rotatably connected. The insulating base is slidably sleeved on the two transversely symmetrical longitudinal threaded rods and threadedly connected to them. The lower surface of each upper electrode is machined with anti-slip teeth, and the upper surface of each lower electrode is also machined with the same anti-slip teeth.

5. The high-frequency heat-sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 4, characterized in that: Each of the aforementioned intermediate water storage tanks is provided with an inlet and outlet water tank below it, and each of the aforementioned inlet and outlet water tanks is connected to an external inlet and outlet water pipe. The end of the inlet and outlet water pipe passes through the longitudinal side wall of the high-frequency heat sealing box and extends to its outside. Each of the aforementioned inlet and outlet water pipes is provided with an inlet and outlet water regulating valve in the middle section. A hot and cold partition is fixed in the middle of the intermediate water storage tank, which divides the interior of the intermediate water storage tank into a horizontally symmetrical cold water supply area and a hot water return area. The same hot and cold insulation plates are also fixed inside the inlet and outlet water tanks and the inlet and outlet water pipes, respectively. Each of the inlet and outlet water tanks has a water supply pump and a return pump fixed on its upper surface on both sides. The water supply pump has a water supply pipe fixed at its upper end, and the end of the water supply pipe is fixedly connected to the intermediate water storage tank and communicates with the cold water supply area. The return pump has a return pipe fixed at its upper end, and the end of the return pipe is fixedly connected to the intermediate water storage tank and communicates with the hot water return area.

6. The high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 5, characterized in that: The positioning and correction unit is provided in two sets and is respectively installed on the two extended mounting brackets. The positioning and correction unit is located on one side of the tension adjustment unit. Each of the extended mounting brackets has a longitudinally extending sliding groove on its upper surface, and two electrically driven guide rails are fixed on the transverse inner walls on both sides of each sliding groove. Each of the positioning and correction units includes two longitudinally symmetrical electric slides, which are slidably mounted between the two electric drive guide rails. Each of the electric slide blocks is fixed with a lifting and telescopic cylinder on its upper surface, and the upper telescopic end of the lifting and telescopic cylinder is equipped with a side correction wheel. The transfer and conveying unit is provided in two sets and is respectively installed on the two extended mounting frames. The transfer and conveying unit is located on one side of the positioning and correction unit. Each of the aforementioned transfer and conveying units includes two longitudinally symmetrical transmission boxes. Several transfer and conveying rollers are rotatably installed between the two transmission boxes. The several transfer and conveying rollers are arranged at equal intervals in the transverse direction. The transmission box is equipped with a sprocket transmission mechanism that drives each transfer and conveying roller to rotate synchronously. During the processing, the tarpaulin alternately passes around each transfer and conveying roller. The upper end of the lateral opening of the high-frequency heat sealing box is higher than the intermediate conveyor roller by a certain height.

7. The high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulin according to claim 6, characterized in that: The high-frequency heat sealing main unit is provided with two sets of floating pressing mechanisms on its lateral sides. Each set of floating pressing mechanisms includes two longitudinally symmetrical swing bases, which are rotatably mounted on the longitudinal inner wall of the high-frequency heat sealing box. A swing drive motor is fixed on the longitudinal outer wall of the high-frequency heat sealing box, directly opposite the swing base. The output shaft end of the swing drive motor passes through the high-frequency heat sealing box and is fixed to the side end face of one of the swing bases. Each of the swing bases is fixed with a telescopic swing arm on its upper end face. The upper telescopic end of the telescopic swing arm is fixed with a rotating mounting seat. A floating pressure roller is rotatably provided between two longitudinally opposite rotating mounting seats.

8. The high-frequency heat-sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 7, characterized in that: The secondary pressing and shaping unit includes two symmetrical shaping rollers, which are located on one side of the high-frequency heat sealing box and extend longitudinally. Each of the shaping rollers has two circular bases fixed at its longitudinal ends. Each of the circular bases has three centrally symmetrical side telescopic cylinders fixed on its longitudinal inner wall. The telescopic ends of the three side telescopic cylinders are fixed with rolling shaping rings.

9. The high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 8, characterized in that: The cooling protection unit includes an air-cooled protective box, which is a square box with openings on both sides and the bottom. The air-cooled protective box is sandwiched between the high-frequency heat sealing box and the extension mounting frame, and the bottom of the air-cooled protective box is fixed to the upper surface of the support base. The air-cooled protective box has a cold air flow channel inside. Two symmetrical inclined air outlets are opened on the longitudinal inner wall of each side of the air-cooled protective box. The two inclined air outlets are at a 90° angle to each other and are connected to the cold air flow channel. An air inlet box is fixed in the middle of the upper surface of the air-cooled protective box. A compressor fan is provided on the top of the air inlet box. A circular air inlet is opened in the middle of the upper surface of the air-cooled protective box. An air inlet filter is fixed inside the air inlet. Two transversely symmetrical support rollers are rotatably installed between the longitudinal inner walls on both sides of the air-cooled protective box. The support rollers are positioned between the two vertically symmetrical inclined air outlets.

10. The high-frequency heat sealing device for processing long-lasting UV-resistant and puncture-resistant tarpaulins according to claim 9, characterized in that: The electrical control unit includes a control host, which is fixed on the longitudinal outer wall of the high-frequency heat sealing box.

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