Pvc tape with antistatic and fireproof functions, preparation method and preparation system

Abstract

The application relates to the technical field of adhesive tapes, and discloses a PVC adhesive tape with antistatic and fireproof functions, a preparation method and a preparation system. The PVC adhesive tape with antistatic and fireproof functions comprises a base material and an adhesive. The base material comprises 80-90 wt% of PVC, 0.5-2 wt% of an antistatic agent, 5-15 wt% of a fireproof agent, 2-8 wt% of a plasticizer and 1-3 wt% of a stabilizer. The coating amount of the adhesive is 10-30 g / m^2. The PVC adhesive tape with antistatic and fireproof functions has efficient antistatic, fireproof, plasticizing, stabilizing and adhesive functions, can meet various requirements in modern industry and daily life, and has great application value and market potential in consideration of environmental protection and safety in material selection.

Description

Technical Field

[0001] This invention relates to the field of adhesive tape technology, specifically to PVC adhesive tape with antistatic and fire-retardant functions, its preparation method, and its preparation system. Background Technology

[0002] PVC tape is widely used in electrical, communications, electronics, and other industrial fields, and its excellent insulation properties and ease of use have won it a large market share. However, with social progress and technological development, relying solely on traditional PVC tape can no longer meet the diverse needs of modern industry.

[0003] Static electricity and fire are two major risk factors that require special attention in modern industrial production. Static electricity can cause electronic equipment malfunctions or damage, and may even trigger fires; once a fire occurs, the losses and impacts are incalculable. Therefore, it is necessary to develop a new type of PVC tape that possesses both anti-static and fire-resistant properties to better address these risks. Summary of the Invention

[0004] The purpose of this invention is to provide PVC tape with antistatic and fire-retardant functions, its preparation method, and its preparation system. This technology can solve the problems existing in the prior art. The PVC tape with antistatic and fire-retardant functions has efficient antistatic, fire-retardant, plasticizing, stabilizing, and adhesive functions, which can meet the various needs of modern industry and daily life. At the same time, environmental protection and safety are also taken into consideration in the selection of materials, which has great application value and market potential.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to an antistatic and fire-retardant PVC tape, comprising a substrate and an adhesive; the substrate comprises 80-90% by weight PVC, 0.5-2% by weight antistatic agent, 5-15% by weight fire retardant, 2-8% by weight plasticizer, and 1-3% by weight stabilizer; the adhesive has a coating amount of 10-30 g / m².

[0007] The antistatic agent is a long-chain fatty acid salt, phosphate ester, or amine and its derivatives; the fire retardant is aluminum hydroxide, magnesium hydroxide, organophosphate, or bromide; the plasticizer is phthalate, acetate, or bio-based plasticizer; the stabilizer is organotin or calcium-zinc composite stabilizer; and the adhesive is natural rubber, synthetic rubber, or pressure-sensitive adhesive.

[0008] A method for preparing PVC tape with antistatic and fire-retardant properties includes the following steps:

[0009] ① Mix PVC resin, antistatic agent, fire retardant, plasticizer and stabilizer in a mixer according to the specified proportions;

[0010] ② Melt extrusion: Feed the mixed materials into the melt extruder; adjust the temperature of the extruder to the range of 160-190℃ to ensure that the PVC melts and is uniform, and extrudes to form a uniform PVC film;

[0011] ③ Cooling and shaping: The PVC film is cooled and shaped by cooling rollers; the temperature of the rollers is controlled at 25-35℃ to cool the film quickly;

[0012] ④ Adhesive application process: Use a coating machine and select a suitable adhesive for application; the amount of adhesive used is 10-30g / m^2;

[0013] ⑤ Drying: The PVC film passes through a drying tunnel at a temperature of 60-80℃, which dries the adhesive and bonds it tightly to the PVC film to form PVC tape.

[0014] ⑥ Winding and Cutting: The dried PVC tape is wound into a large roll using a tape winding device, and simultaneously cut into the required size using a tape cutting device.

[0015] ⑦ Testing: Use a surface resistivity meter to test the surface resistance of the tape; test the fire resistance of the tape through a standard combustion test.

[0016] ⑧ Packaging and Storage: Use plastic film to seal the tape rolls to ensure that the tape is not affected by the external environment during transportation and storage; store the tape in a dry, cool place and avoid direct sunlight.

[0017] The coating machine includes an intelligent pressure regulating device for the adhesive liquid, which comprises:

[0018] Adhesive container;

[0019] A pressure regulating mechanism, located inside the adhesive container, includes a pressure regulating valve, a pressure gauge, and a venting component. The pressure regulating valve is mounted on the top of the outer wall of the adhesive container, the pressure gauge is mounted on the top of the outer wall of the adhesive container, and the venting component is located inside the adhesive container.

[0020] A heating and stirring mechanism is located inside the adhesive container. The heating and stirring mechanism includes a heating element, a stirring element, a heating rod, a concentration detector, and a water inlet pipe. The heating element is located on the adhesive container, the stirring element is located inside the adhesive container, the heating rod is located on the stirring element, the concentration detector is installed at the bottom of the outer wall of the adhesive container, and the water inlet pipe is fixedly located at the top of the outer wall of the adhesive container.

[0021] The venting component includes a venting cylinder, a connecting cylinder, two vent holes, a pressure regulating component, an elastic component, and an alarm component. The connecting cylinder is fixedly embedded in the top of the inner wall of the glue tank, and the venting cylinder is fixedly installed on the top of the outer wall of the connecting cylinder. Each vent hole is opened on both sides of the outer wall of the venting cylinder. The pressure regulating component is located inside the venting cylinder, the elastic component is located on the pressure regulating component, and the alarm component is located inside the venting cylinder.

[0022] The pressure regulating assembly includes a threaded rod, a pressure plate, and two guide rods. The threaded rod is rotatably embedded in the top of the outer wall of the venting cylinder, and the pressure plate is threaded to the outer wall of the threaded rod. Each guide rod is fixedly set in the top of the inner wall of the venting cylinder, and each guide rod slides through the bottom of the outer wall of the pressure plate.

[0023] The elastic component includes a first spring, a mounting plate, a connecting rod, a rubber block, and two limiting rods. One end of the first spring is fixedly disposed at the bottom of the outer wall of the pressure plate. The mounting plate is fixedly disposed at one end of the first spring. The connecting rod is fixedly disposed at the bottom of the outer wall of the mounting plate. The rubber block is fixedly disposed at the bottom of the outer wall of the connecting rod. Each limiting rod slides through the top of the outer wall of the mounting plate and is fixedly disposed on both sides of the inner wall of the venting cylinder. The rubber block is slidably embedded in the inner wall of the connecting cylinder.

[0024] The alarm assembly includes a fixed block, a connecting rod, a moving block, a moving shaft, a second spring, a touch block, and an alarm device. The fixed block is fixedly disposed on one side of the outer wall of the connecting rod near the bottom edge. The moving shaft is fixedly disposed on one side of the inner wall of the venting cylinder. The moving block slides through one side of the outer wall of the moving shaft. The connecting rod is installed between the fixed block and the moving block via a pivot. The second spring is fixedly disposed on one side of the outer wall of the moving block. The touch block is fixedly disposed at one end of the second spring. The alarm device is installed on one side of the inner wall of the venting cylinder.

[0025] The heating component includes a heating cylinder and an electric heating wire. The heating cylinder is fixedly sleeved on the outer wall of the adhesive container, and the electric heating wire is installed on the inner wall of the heating cylinder. The stirring component includes a mounting frame, a first stirring cylinder, a second stirring cylinder, and a driving assembly. The mounting frame is fixedly disposed on the top of the outer wall of the adhesive container. The first stirring cylinder is rotatably embedded in the center of the top of the outer wall of the adhesive container. The second stirring cylinder is rotatably embedded in the top of the outer wall of the mounting frame, and the second stirring cylinder rotatably penetrates through the inner wall of the first stirring cylinder. The driving assembly is disposed on the adhesive container, and the heating rod is installed on the inner wall of the second stirring cylinder.

[0026] The drive assembly includes a first bevel gear, a second bevel gear, a forward and reverse motor, and a third bevel gear. The forward and reverse motor is mounted on the top of the outer wall of the adhesive tank. The third bevel gear is fixedly sleeved on the output end of the forward and reverse motor. The first bevel gear is fixedly sleeved on the outer wall of the first stirring drum, and the second bevel gear is fixedly sleeved on the outer wall of the second stirring drum. Both the first and second bevel gears mesh with the third bevel gear. A liquid level sensor is installed on one side of the outer wall of the adhesive tank. A heat insulation layer is fixedly sleeved on the outer wall of the heating cylinder.

[0027] The present invention has the following beneficial effects:

[0028] 1. The antistatic and fire-retardant PVC tape of the present invention has the following effects:

[0029] Antistatic function: By adding 0.5-2% by weight of antistatic agent, this PVC tape can effectively reduce the surface resistance of the tape, thereby reducing the generation and accumulation of static electricity. Long-chain fatty acid salts, phosphate esters, or amines and their derivatives are selected as antistatic agents. These antistatic agents are widely available, readily accessible, and possess excellent antistatic properties, providing the tape with a durable and stable antistatic effect.

[0030] Fire retardant function: Adding 5-15% by weight of fire retardant gives the tape significant fire retardant properties, slowing the spread of fire and buying more time for fire control. Selected fire retardants such as aluminum hydroxide, magnesium hydroxide, organophosphates, or bromides not only provide excellent fire retardant properties but also have minimal impact on other physical properties of the tape.

[0031] Plasticizing and Stabilizing Functions: By adding 2-8% by weight of plasticizer, the tape's flexibility is improved, thereby increasing its service life and performance. Selected plasticizers such as phthalates, acetates, or bio-based plasticizers ensure that the tape not only provides excellent plasticizing effects but is also more environmentally friendly and safe. Adding 1-3% by weight of stabilizer, especially selected organotin or calcium-zinc composite stabilizers, ensures that the tape maintains its physical and chemical properties under prolonged use and exposure to various environmental conditions.

[0032] Adhesive properties: The adhesive coating amount used in the tape is 10-30 g / m^2. This coating amount ensures good adhesion of the tape, allowing it to be firmly bonded to various surfaces. The selected adhesive types, such as natural rubber, synthetic rubber, or pressure-sensitive adhesives, not only provide good adhesion but also ensure the safety and environmental friendliness of the tape.

[0033] In summary, PVC tape with antistatic and fire-retardant functions combines highly efficient antistatic, fire-retardant, plasticizing, stabilizing, and adhesive properties, which can meet various needs in modern industry and daily life. At the same time, environmental protection and safety are taken into account in the material selection, making it of great application value and market potential.

[0034] 2. The preparation method of the antistatic and fire-retardant PVC tape of the present invention has the following effects:

[0035] Uniform mixing: By mixing various additives in proportion in a mixer, the uniform distribution of each raw material in the PVC tape is ensured, thereby improving the overall performance of the tape.

[0036] Uniformity of melt extrusion: Adjusting the extruder temperature to ensure uniform melting of PVC can produce a uniform PVC film, thereby ensuring the flatness and consistency of the tape.

[0037] Rapid cooling and setting: Through specific temperature control, the PVC film is ensured to cool and set rapidly, maintaining its shape and preparing it for the next step of adhesive application.

[0038] Appropriate adhesive application: Select an appropriate amount of adhesive to ensure that the tape has good adhesion and durability, while avoiding waste caused by excessive adhesive application.

[0039] Drying ensures a tight bond: The drying tunnel ensures that the adhesive is completely dry and bonds tightly to the PVC film, improving the durability and lifespan of the tape.

[0040] Precise winding and cutting: The tape is wound by the winding device and cut as needed by the cutting device to ensure that the size of each roll of tape is accurate, making it convenient for users to select and use.

[0041] Comprehensive testing: The surface resistivity and fire resistance of the tape are tested to ensure that each batch of tape produced meets the specified standards, thereby increasing user confidence in the product.

[0042] Professional Packaging and Storage: We use professional packaging methods to ensure that the tape is not affected by the external environment during transportation and storage, thus extending the shelf life of the tape.

[0043] It is recommended to store the tape in a dry, cool place, avoiding direct sunlight, to further ensure the stability of the tape's physical and chemical properties.

[0044] In summary, this preparation method has been comprehensively and meticulously planned and optimized for the production process of PVC tape, aiming to provide a high-quality, stable, and high-performance antistatic and fire-retardant PVC tape.

[0045] 3. The intelligent pressure regulating device for adhesive liquid of the present invention has the following beneficial effects:

[0046] Improved production safety: A pressure regulating valve precisely sets the internal pressure of the adhesive tank, ensuring pressure stability. A pressure gauge displays the real-time pressure, allowing operators to monitor the tank's pressure status. A venting mechanism ensures a constant internal pressure, significantly reducing the risk of explosion due to excessive pressure and preventing potential safety hazards.

[0047] Ensuring Adhesive Coating Quality: The heating and stirring mechanism ensures uniform heating and stirring of the adhesive solution, guaranteeing its stability and uniformity. This prevents the adhesive from concentrating or solidifying due to prolonged storage or external temperature changes, thus ensuring continuous and stable adhesive application. It effectively addresses the effects of temperature and moisture evaporation on the adhesive, preventing damage to coating quality or machine downtime.

[0048] In summary, this invention not only greatly enhances the safety of the production process and ensures the safety of operators, but also effectively maintains the stability and high quality of adhesive coating, bringing significant benefits to tape production.

[0049] 4. The tape cutting device of the present invention has the following effects:

[0050] High efficiency: The outer ring of the cutter wheel features a micro-serrated structure, which improves cutting efficiency and quality. Simultaneously, through fine-tuning of the cutter wheel using linear piezoelectric ceramics, the wheel can perform eccentric movement during cutting, further enhancing the cutting effect and reducing friction between the cutter wheel and the conveyor belt, thus extending the wheel's lifespan.

[0051] Optimized cutting process: The coordinated action of the second motor and the electric actuator enables the cutter wheel to rotate at high speed on the surface of the tape roll, and it can adaptively adjust the cutting position to cope with changes in the diameter of the tape roll. This efficient drive method and flexible position adjustment improve the cutting efficiency of the device.

[0052] Intelligent control: The entire device operates automatically under the control of the controller, greatly reducing the possibility of human error and improving the stability and cutting quality of the device. At the same time, the intelligent control of the controller significantly improves the device's working efficiency.

[0053] The tape winding device is designed to address multiple needs, including tape winding, tension adjustment, magnetic fixation, and safety protection. Its design aims to ensure stable tape winding, efficient production, and operational safety. High precision and adaptive cutting: The device utilizes torque piezoelectric ceramics and linear piezoelectric ceramics, using their piezoelectric effect to convert mechanical motion into electrical signals, thereby achieving precise control of the cutter wheel position and movement. Specifically, the torque piezoelectric ceramic monitors changes in the tape roll diameter and generates a corresponding voltage. This voltage is received and analyzed by the controller and then used to drive the electric push rod and cutter wheel for precise cutting. This mechatronic design effectively improves cutting accuracy and adaptability. Furthermore, the tape cutting device features high efficiency, high precision, and adaptive cutting characteristics, and is easy to operate, effectively reducing production costs and generating significant economic benefits. Compared to cutting after all tape is wound, cutting during the tape winding process not only improves cutting accuracy and efficiency but also reduces mechanical wear and safety risks, thereby improving the stability and reliability of the entire production process. Compared to cutting before winding, cutting during the tape winding process can reduce the difficulty of tape handling, reduce tape waste, simplify operation steps, and thus improve production efficiency while ensuring cutting accuracy. Attached Figure Description

[0054] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a first-view perspective perspective view of the intelligent pressure regulating device for adhesive liquid of the present invention.

[0056] Figure 2 This is a second-view perspective perspective view of the intelligent pressure regulating device for adhesive liquid of the present invention;

[0057] Figure 3 This is a third-view perspective view of the intelligent pressure regulating device for adhesive liquid of the present invention.

[0058] Figure 4 This is a cross-sectional view of the adhesive tank in the intelligent pressure regulating device for adhesives of the present invention.

[0059] Figure 5 This is a cross-sectional view of the venting cylinder of the intelligent pressure regulating device for adhesive liquid of the present invention;

[0060] Figure 6 This is a partial structural schematic diagram of the intelligent pressure regulating device for adhesive liquid of the present invention;

[0061] Figure 7This is a cross-sectional view of the first stirring cylinder of the intelligent pressure regulating device for adhesive liquid of the present invention;

[0062] Figure 8 This is a partial exploded view of the intelligent pressure regulating device for adhesive liquid of the present invention;

[0063] Figure 9 For the present invention Figure 2 Enlarged view of point A in the middle;

[0064] Figure 10 For the present invention Figure 5 Enlarged view of point A in the middle;

[0065] Figure 11 This is a schematic diagram of the overall structure of the tape cutting device of the present invention;

[0066] Figure 12 This is a schematic diagram of the structure inside the piezoelectric inductor of the tape cutting device of the present invention;

[0067] Figure 13 This is a schematic diagram of the cutter wheel of the tape cutting device of the present invention.

[0068] The attached diagram lists the components represented by each number as follows:

[0069] In the diagram: 1. Adhesive container; 2. Pressure regulating mechanism; 201. Pressure regulating valve; 202. Pressure gauge; 203. Vent cylinder; 204. Alarm device; 205. Connecting cylinder; 206. Vent hole; 207. Threaded rod; 208. Pressure plate; 209. Guide rod; 210. First spring; 211. Mounting plate; 212. Connecting rod; 213. Rubber block; 214. Limiting rod; 215. Fixing block; 216. Connecting rod; 217. Moving block; 218. Moving shaft; 219. Second spring; 220. Contact block; 3. Heating and stirring mechanism; 301. Heating rod; 302. Concentration detector; 303. Heating cylinder; 304. Electric heating wire; 305. Mounting bracket; 30 6. First stirring drum; 307. Second stirring drum; 308. First bevel gear; 309. Second bevel gear; 310. Forward and reverse motor; 311. Third bevel gear; 312. Water inlet pipe; 4. Liquid level sensor; 5. Heat insulation layer; 21. Tape reel; 22. Tape thickness recognition mechanism; 221. Passive wheel; 222. First support rod frame; 223. Piezoelectric inductor; 224. Horizontal shaft; 23. Cutting mechanism; 230. Second support rod frame; 231. First bottom shaft; 232. Second bottom shaft; 233. Cutter wheel; 234. Long shaft; 235. Second motor; 236. Crossbar; 237. Electric actuator; 238. Linear piezoelectric ceramic; 239. Torque piezoelectric ceramic. Detailed Implementation

[0070] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0071] Example 1: The present invention is a PVC tape with antistatic and fire-retardant functions, comprising a substrate and an adhesive; the substrate comprises 80-90% by weight PVC, 0.5-2% by weight antistatic agent, 5-15% by weight fire retardant, 2-8% by weight plasticizer, and 1-3% by weight stabilizer; the coating amount of the adhesive is 10-30 g / m^2.

[0072] The antistatic agent is a long-chain fatty acid salt, phosphate ester, or amine and its derivatives; the fire retardant is aluminum hydroxide, magnesium hydroxide, organophosphate, or bromide; the plasticizer is phthalate, acetate, or bio-based plasticizer; the stabilizer is organotin or calcium-zinc composite stabilizer; and the adhesive is natural rubber, synthetic rubber, or pressure-sensitive adhesive.

[0073] A method for preparing PVC tape with antistatic and fire-retardant properties includes the following steps:

[0074] ① Mix PVC resin, antistatic agent, fire retardant, plasticizer and stabilizer in a mixer according to the specified proportions;

[0075] ② Melt extrusion: Feed the mixed materials into the melt extruder; adjust the temperature of the extruder to the range of 160-190℃ to ensure that the PVC melts and is uniform, and extrudes to form a uniform PVC film;

[0076] ③ Cooling and shaping: The PVC film is cooled and shaped by cooling rollers; the temperature of the rollers is controlled at 25-35℃ to cool the film quickly;

[0077] ④ Adhesive application process: Use a coating machine and select a suitable adhesive for application; the amount of adhesive used is 10-30g / m^2;

[0078] ⑤ Drying: The PVC film passes through a drying tunnel at a temperature of 60-80℃, which dries the adhesive and bonds it tightly to the PVC film to form PVC tape.

[0079] ⑥ Winding and Cutting: The dried PVC tape is wound into a large roll using a tape winding device, and simultaneously cut into the required size using a tape cutting device.

[0080] ⑦ Testing: Use a surface resistivity meter to test the surface resistance of the tape; test the fire resistance of the tape through a standard combustion test.

[0081] ⑧ Packaging and Storage: Use plastic film to seal the tape rolls to ensure that the tape is not affected by the external environment during transportation and storage; store the tape in a dry, cool place and avoid direct sunlight.

[0082] The parameters selected within the above formulation range were used as experimental parameters, and the obtained experimental data are summarized as follows:

[0083]

[0084] The test results show that the PVC tape of the present invention has better antistatic, fireproof and structural strength than conventional formulas.

[0085] Example 2: Please refer to Figures 1-10 As shown, the coating machine includes an intelligent pressure regulating device for the adhesive liquid, which includes:

[0086] Adhesive container 1;

[0087] Pressure regulating mechanism 2, located inside adhesive tank 1, includes a pressure regulating valve 201, a pressure display gauge 202, and a venting component. The pressure regulating valve 201 is installed on the top of the outer wall of adhesive tank 1, the pressure display gauge 202 is installed on the top of the outer wall of adhesive tank 1, and the venting component is located inside adhesive tank 1.

[0088] The heating and stirring mechanism 3 is located inside the glue tank 1. The heating and stirring mechanism 3 includes a heating component, a stirring component, a heating rod 301, a concentration detector 302, and a water inlet pipe 312. The heating component is located on the glue tank 1, the stirring component is located inside the glue tank 1, the heating rod 301 is located on the stirring component, the concentration detector 302 is installed at the bottom of the outer wall of the glue tank 1, and the water inlet pipe 312 is fixedly installed at the top of the outer wall of the glue tank 1.

[0089] In this implementation scheme: Adhesive tank 1 is used to hold the adhesive from the professional tape manufacturing coating machine. A pressure regulating valve 201 adjusts the internal pressure of adhesive tank 1 to a suitable value. A pressure display 202 displays the real-time pressure value of adhesive tank 1. A venting device ensures a constant internal pressure, preventing high pressure that could lead to explosion and safety hazards. A controller is connected to the pressure regulating valve 201 to set the required internal pressure. A heating and stirring mechanism 3 heats and stirs the adhesive in adhesive tank 1 to prevent the adhesive from deteriorating if left in the tank for extended periods. Water concentration is affected by external temperature and evaporation, causing the glue concentration to gradually increase, which affects the glue coating quality of the glue applicator or causes the glue to solidify, making it impossible for the glue applicator to apply glue. The glue in the glue tank 1 is heated by the heating element and heating rod 301. The glue in the glue tank 1 is stirred by the stirring element to increase the glue fluidity. The glue concentration is detected by the concentration detector 302 to prevent the glue concentration from failing to meet the glue applicator's application requirements. One end of the water inlet pipe 312 is connected to the water pump and external water source to facilitate the addition of water to the glue tank 1 to dilute the glue and prevent the glue concentration from increasing and affecting the glue coating quality of the glue applicator.

[0090] Specifically, the venting component includes a venting cylinder 203, a connecting cylinder 205, two vent holes 206, a pressure regulating component, an elastic component, and an alarm component. The connecting cylinder 205 is fixedly embedded in the top of the inner wall of the glue tank 1, and the venting cylinder 203 is fixedly installed on the top of the outer wall of the connecting cylinder 205. Each vent hole 206 is opened on both sides of the outer wall of the venting cylinder 203. The pressure regulating component is located inside the venting cylinder 203, the elastic component is located on the pressure regulating component, and the alarm component is located inside the venting cylinder 203.

[0091] In this implementation plan: the venting cylinder 203 and the connecting cylinder 205 are integrated and used for the installation and placement of the pressure regulating component, the elastic component and the alarm component. The gas inside the glue tank 1 is discharged through the vent hole 206. The elastic component is adjusted according to the required gas pressure value inside the glue tank 1 through the pressure regulating component. The alarm component can also sound an alarm while venting the gas, reminding the staff to pay attention to the gas pressure inside the glue tank 1 to prevent abnormal gas pressure and potential safety hazards.

[0092] Specifically, the pressure regulating assembly includes a threaded rod 207, a pressure plate 208, and two guide rods 209. The threaded rod 207 is rotatably embedded in the top of the outer wall of the venting cylinder 203, and the pressure plate 208 is threadedly connected to the outer wall of the threaded rod 207. Each guide rod 209 is fixedly set in the top of the inner wall of the venting cylinder 203, and each guide rod 209 slides through the bottom of the outer wall of the pressure plate 208.

[0093] In this implementation scheme: the rotation of the threaded rod 207 causes the pressure plate 208 to move on the guide rod 209, adjusting the position of the pressure plate 208 and applying pressure to the first spring 210 to meet the required internal air pressure value of the glue tank 1, avoiding the glue tank 1's internal air pressure being too low or too high, thus failing to meet the required internal air pressure value. The guide rod 209 guides and limits the movement of the pressure plate 208.

[0094] Specifically, the elastic component includes a first spring 210, a mounting plate 211, a connecting rod 212, a rubber block 213, and two limiting rods 214. One end of the first spring 210 is fixedly disposed at the bottom of the outer wall of the pressure plate 208. The mounting plate 211 is fixedly disposed at one end of the first spring 210. The connecting rod 212 is fixedly disposed at the bottom of the outer wall of the mounting plate 211. The rubber block 213 is fixedly disposed at the bottom of the outer wall of the connecting rod 212. Each limiting rod 214 slides through the top of the outer wall of the mounting plate 211 and is fixedly disposed on both sides of the inner wall of the venting cylinder 203. The rubber block 213 is slidably embedded in the inner wall of the connecting cylinder 205.

[0095] In this implementation scheme: the downward movement of the pressure plate 208 compresses the first spring 210, increasing the pressure of the first spring 210 on the mounting plate 211. The mounting plate 211, the connecting rod 212, and the rubber block 213 are fixed together. The first spring 210 allows the rubber block 213 to block the inner wall of the connecting cylinder 205 near the top edge to prevent gas from escaping from the glue tank 1. When the gas pressure inside the glue tank 1 is too high, the rubber block 213 will be pushed out of the connecting cylinder 205. The gas inside the glue tank 1 will be discharged through the two vent holes 206 on the vent cylinder 203. The two limiting rods 214 guide and limit the movement of the mounting plate 211.

[0096] Specifically, the alarm assembly includes a fixed block 215, a connecting rod 216, a moving block 217, a moving shaft 218, a second spring 219, a touch block 220, and an alarm device 204. The fixed block 215 is fixedly disposed on one side of the outer wall of the connecting rod 212 near the bottom edge. The moving shaft 218 is fixedly disposed on one side of the inner wall of the venting cylinder 203. The moving block 217 slides through one side of the outer wall of the moving shaft 218. The connecting rod 216 is installed between the fixed block 215 and the moving block 217 via a pivot. The second spring 219 is fixedly disposed on one side of the outer wall of the moving block 217. The touch block 220 is fixedly disposed on one end of the second spring 219. The alarm device 204 is installed on one side of the inner wall of the venting cylinder 203.

[0097] In this implementation scheme: as the connecting rod 212 moves upward, it can drive the fixed block 215 to move upward, so that one end of the connecting rod 216 drives the moving block 217 to move on the moving shaft 218, and drives the contact block 220 on the second spring 219 to contact the alarm device 204, thereby emitting an alarm sound to remind the staff to pay attention to the air pressure in the glue tank 1, so as to prevent abnormal air pressure during exhaust and potential safety hazards. The contact block 220 and the moving shaft 218 slide together.

[0098] Specifically, the heating components include a heating cylinder 303 and an electric heating wire 304. The heating cylinder 303 is fixedly sleeved on the outer wall of the glue container 1, and the electric heating wire 304 is installed on the inner wall of the heating cylinder 303.

[0099] In this embodiment: When the electric heating wire 304 is energized, it can heat the outer wall of the glue container 1, so that the heat is transferred to the glue to prevent the glue from solidifying. The electric heating wire 304 is wound around the outer wall of the glue container 1 to make the outer wall of the glue container 1 heated evenly. The heating cylinder 303 is used for the installation and placement of the electric heating wire 304.

[0100] Specifically, the stirring components include a mounting bracket 305, a first stirring drum 306, a second stirring drum 307, and a drive assembly. The mounting bracket 305 is fixedly mounted on the top of the outer wall of the adhesive tank 1. The first stirring drum 306 is rotatably embedded in the center of the top of the outer wall of the adhesive tank 1. The second stirring drum 307 is rotatably embedded in the top of the outer wall of the mounting bracket 305, and the second stirring drum 307 rotatably passes through the inner wall of the first stirring drum 306. The drive assembly is mounted on the adhesive tank 1, and the heating rod 301 is mounted on the inner wall of the second stirring drum 307.

[0101] In this embodiment: the mounting bracket 305 is used for the installation and placement of the second mixing drum 307. The drive assembly can drive the first mixing drum 306 and the second mixing drum 307 to rotate in opposite directions, thereby improving the efficiency of mixing. Since the heating rod 301 is located inside the second mixing drum 307 and the second mixing drum 307 passes through the first mixing drum 306, it can further heat the glue during mixing, making the glue heated more evenly.

[0102] Specifically, the drive assembly includes a first bevel gear 308, a second bevel gear 309, a forward / reverse motor 310, and a third bevel gear 311. The forward / reverse motor 310 is mounted on the top of the outer wall of the adhesive tank 1. The third bevel gear 311 is fixedly sleeved on the output end of the forward / reverse motor 310. The first bevel gear 308 is fixedly sleeved on the outer wall of the first stirring drum 306. The second bevel gear 309 is fixedly sleeved on the outer wall of the second stirring drum 307. Both the first bevel gear 308 and the second bevel gear 309 mesh with the third bevel gear 311.

[0103] In this implementation scheme: When the forward and reverse motor 310 is powered on, it drives the third bevel gear 311 to rotate, which can simultaneously drive the first bevel gear 308 and the second bevel gear 309 to rotate. The first bevel gear 308 drives the first stirring drum 306 to rotate inside the glue tank 1, and the second bevel gear 309 drives the second stirring drum 307 to rotate on the mounting bracket 305. The first stirring drum 306 and the second stirring drum 307 rotate in opposite directions.

[0104] Specifically, a liquid level sensor 4 is installed on one side of the outer wall of the glue tank 1.

[0105] In this implementation scheme: The liquid level sensor 4 is used to measure the liquid level of the adhesive inside the adhesive container 1. The liquid level sensor 4, pressure regulating valve 201, air pressure display 202, heating rod 301, concentration detector 302, alarm device 204, electric heating wire 304 and forward and reverse motor 310 are powered by an external power source and should be electrically connected to the external power source. The internal circuit principle and structure are common knowledge to those skilled in the art and will not be described in detail here. The model can be selected according to the actual use.

[0106] Specifically, the outer wall of the heating cylinder 303 is fixedly fitted with a heat insulation layer 5.

[0107] In this implementation plan: the material of the heat insulation layer 5 is heat insulation cotton, which plays a role in heat insulation to prevent heat loss from the inside of the heating cylinder 303.

[0108] In use, first energize the heating wire 304 and heating rod 301 to heat the glue inside the glue container 1. Then, start the forward and reverse motor 310 to drive the third bevel gear 311 to rotate, which simultaneously drives the first bevel gear 308 and the second bevel gear 309 to rotate. The first bevel gear 308 drives the first stirring drum 306 to rotate inside the glue container 1, and the second bevel gear 309 drives the second stirring drum 307 to rotate on the mounting bracket 305, thus stirring the glue and increasing its fluidity. The glue concentration is detected by the concentration detector 302 to prevent the glue concentration from failing to meet the application requirements of the glue applicator. When the glue concentration is too high, water is added to the glue tank 1 through the water inlet pipe 312 to dilute the glue. The pressure regulating valve 201 adjusts the air pressure inside the glue tank 1. At the same time, the screw rod 207 rotates, causing the pressure plate 208 to move on the guide rod 209. Adjusting the position of the pressure plate 208 applies pressure to the first spring 210 to meet the air pressure requirements inside the glue tank 1. To meet pressure requirements, the pressure display 202 shows the real-time pressure inside the adhesive container 1. When the internal pressure of the adhesive container 1 exceeds the set pressure value, the rubber block 213 will be pushed out of the connecting cylinder 205, causing the mounting plate 211 and connecting rod 212 to move on the limit rod 214. The gas inside the adhesive container 1 will be discharged through the two vent holes 206 on the vent cylinder 203 to prevent excessive internal pressure from causing an explosion. Simultaneously, the connecting rod 212 moves upwards... This can drive the fixed block 215 to move upward, causing one end of the connecting rod 216 to drive the moving block 217 to move on the moving shaft 218, and causing the contact block 220 on the second spring 219 to contact the alarm device 204, thereby emitting an alarm sound to remind the staff to pay attention to the air pressure in the glue tank 1, so as to prevent abnormal air pressure during exhaust. When the air pressure inside the glue tank 1 reaches the set air pressure value, the rubber block 213 will block the connecting cylinder 205 under the action of the first spring 210.

[0109] Example 3: Please refer to Figures 11-13 As shown, the present invention further improves the tape cutting device by combining it with the tape winding device, so that each layer of tape is cut just as it is finished being wound.

[0110] The tape cutting device includes a tape thickness identification mechanism 22 and a cutting mechanism 23 disposed on one side of the tape roll 21 away from the winding and adhesion position. The tape thickness identification mechanism 22 includes a driven wheel 221, a first support rod 222, and a piezoelectric sensor 223. The upper end of the first support rod 222 is rotatably connected to and supports the driven wheel 221, and the lower end is fixedly connected to a horizontal shaft 224. Both ends of the horizontal shaft 224 extend into the piezoelectric sensor 223, and the driven wheel 221 is always pressed against the surface of the tape roll 21 by a torsion spring sleeved outside the horizontal shaft 224. A torque piezoelectric ceramic 239 is disposed inside the piezoelectric sensor 223. When the horizontal shaft 224 rotates, it drives the torque piezoelectric ceramic 239 to twist and deform, generating a piezoelectric effect. The magnitude of the generated voltage corresponds to the angle of rotation of the horizontal shaft 224. The cutting mechanism 23 includes a first support rod 222 parallel to the tape roll 21. The system comprises a base shaft 231 and a second base shaft 232; multiple second support rods 230 with their lower ends rotatably mounted on the first base shaft 231, and their upper ends respectively supporting a cutter wheel 233 and rotatably connected to the cutter wheel 233; a long shaft 234 of a parallel tape reel 21 passes through the center of each cutter wheel 233, driving each cutter wheel 233 to rotate; the long shaft 234 is driven to rotate by a second motor 235; a crossbar 236 of a parallel tape reel 21 is fixedly connected to the middle of each second support rod 230; several electric push rods 237 have their upper ends rotatably connected to the crossbar 236 and their lower ends rotatably connected to the second base shaft 232, driving each cutter wheel 233 to rotate around the first base shaft 231; the extension and retraction stroke of the electric push rods 237 is controlled by a controller, which receives and analyzes the voltage data of the torque piezoelectric ceramic 239 to control the rotation of the second support rods 230 to the same angle as the first support rod 222.

[0111] In this embodiment: the first support rod 222 and the second support rod 230 have the same length; the extension line of the first bottom shaft 231 coincides with the horizontal shaft 224; the diameter of the cutter wheel 233 is the same as the diameter of the driven wheel 221. The inner diameter of the cutter wheel 233 is larger than the diameter of the long shaft 234. The inner wall of the cutter wheel 233 is fixedly connected to the outer circumference of the long shaft 234 by an odd number of linear piezoelectric ceramics 238 evenly distributed around the outer circumference of the long shaft 234 (greater than or equal to three); each linear piezoelectric ceramic 238 can expand and contract radially along the outer circumference of the long shaft 234 when voltage is applied; the voltage applied to the linear piezoelectric ceramics 238 is controlled by a controller; the outer ring of the cutter wheel 233 has a micro-serrated structure. Both the torque piezoelectric ceramic 239 and the linear piezoelectric ceramic 238 include multiple linearly stacked torque piezoelectric ceramic units or linear piezoelectric ceramic units; the controller controls the extension or shortening of each linear piezoelectric ceramic 238 to drive the cutter wheel 233 to superimpose an eccentric motion trajectory at a preset position during rotation.

[0112] In this implementation plan, the cutting process of the tape cutting device is as follows:

[0113] ① When the tape is wound on the long strip of tape core, the diameter of the tape roll 21 gradually increases. During this process, the surface of the tape roll 21 pushes the passive wheel 221 to move outward, which drives the first support rod frame 222 to rotate outward. The first support rod frame 222 drives the horizontal shaft 224 to rotate, thereby driving the torque piezoelectric ceramic 239 to twist and generate voltage.

[0114] ② The controller receives and analyzes the voltage generated by the torque piezoelectric ceramic 239 to obtain the rotation angle of the first support rod 222, and controls each electric push rod 237 to shorten synchronously, so that the second support rod 230 rotates outward by the same angle;

[0115] ③ During this process, the second motor 235 drives each cutter wheel 233 to rotate and cut the tape that has just been wound up and adhered to the tape roll 21 through the long shaft 234. The tape is cut shortly after being wound up.

[0116] ④ During the cutting process, along the rotation direction of the cutter wheel 233, just before reaching the contact point between the tape and the outer ring of the cutter wheel 233, the controller controls the linear piezoelectric ceramic 238 on the side closer to the tape winding bar 21 to extend, and the linear piezoelectric ceramic 238 on the side farther from the tape winding bar 21 to shorten. This causes the center of the cutter wheel 233 to deviate from the center of its major axis 234 and move towards the tape winding bar 21. This allows the cutter wheel 233 to have a trajectory of translation towards the tape winding bar 21 superimposed on its rotational trajectory, facilitating the cutting of the cutter wheel 233. 3. The serrated structure of the outer ring pierces into the tape; when the cutting part is about to leave the contact point, the controller reverses the control of the linear piezoelectric ceramic 238, and the center of the cutter wheel 233 deviates from the center of the long axis 234 and moves away from the tape reel 21. This makes the cutter wheel 233 superimposed on the rotation trajectory with the trajectory of translation away from the tape reel 21, which facilitates the serrated structure of the outer ring of the cutter wheel 233 to get out of the tape and reduces the friction between the cutter wheel 233 and the tape. Repeating this process can continuously and efficiently cut the tape.

[0117] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for preparing PVC tape with antistatic and fire-retardant functions, characterized in that: The antistatic and fire-retardant PVC tape comprises a substrate and an adhesive; the substrate comprises 80-90% by weight PVC, 0.5-2% by weight antistatic agent, 5-15% by weight fire retardant, 2-8% by weight plasticizer, and 1-3% by weight stabilizer; the adhesive has a coating amount of 10-30 g / m². The preparation method includes the following steps: ① Mix PVC resin, antistatic agent, fire retardant, plasticizer and stabilizer in a mixer according to the specified proportions; ② Melt extrusion: Feed the mixed materials into the melt extruder; adjust the temperature of the extruder to the range of 160-190℃ to ensure that the PVC melts and is uniform, and extrudes to form a uniform PVC film; ③ Cooling and shaping: The PVC film is cooled and shaped by cooling rollers; the temperature of the rollers is controlled at 25-35℃ to cool the film quickly; ④ Adhesive application process: Use a coating machine and select a suitable adhesive for application; the amount of adhesive used is 10-30g / m^2; ⑤ Drying: The PVC film passes through a drying tunnel at a temperature of 60-80℃, which dries the adhesive and bonds it tightly to the PVC film to form PVC tape. ⑥ Winding and Cutting: The dried PVC tape is wound into a large roll using a tape winding device, and simultaneously cut into the required size using a tape cutting device. ⑦ Testing: Use a surface resistivity meter to test the surface resistivity of the tape; test the fire resistance of the tape through a standard combustion test; ⑧ Packaging and Storage: Use plastic film to seal the tape rolls to ensure that the tape is not affected by the external environment during transportation and storage; store the tape in a dry, cool place and avoid direct sunlight; The coating machine includes an intelligent pressure regulating device for adhesive liquid, which comprises: Adhesive container (1); A pressure regulating mechanism (2) is located inside the adhesive tank (1). The pressure regulating mechanism (2) includes a pressure regulating valve (201), a pressure display gauge (202), and a venting component. The pressure regulating valve (201) is installed on the top of the outer wall of the adhesive tank (1), the pressure display gauge (202) is installed on the top of the outer wall of the adhesive tank (1), and the venting component is located inside the adhesive tank (1). A heating and stirring mechanism (3) is provided inside the glue tank (1). The heating and stirring mechanism (3) includes a heating component, a stirring component, a heating rod (301), a concentration detector (302), and a water inlet pipe (312). The heating component is provided on the glue tank (1), the stirring component is provided inside the glue tank (1), the heating rod (301) is provided on the stirring component, the concentration detector (302) is installed at the bottom of the outer wall of the glue tank (1), and the water inlet pipe (312) is fixedly provided at the top of the outer wall of the glue tank (1). The heating component includes a heating cylinder (303) and an electric heating wire (304). The heating cylinder (303) is fixedly sleeved on the outer wall of the glue tank (1), and the electric heating wire (304) is installed on the inner wall of the heating cylinder (303). The stirring component includes a mounting frame (305), a first stirring cylinder (306), a second stirring cylinder (307), and a driving assembly. The mounting frame (305) is fixedly disposed on the top of the outer wall of the glue tank (1). The first stirring cylinder (306) is rotatably embedded in the center of the top of the outer wall of the glue tank (1). The second stirring cylinder (307) is rotatably embedded in the top of the outer wall of the mounting frame (305), and the second stirring cylinder (307) rotatably penetrates the inner wall of the first stirring cylinder (306). The driving assembly is disposed on the glue tank (1), and the heating rod (301) is installed on the inner wall of the second stirring cylinder (307). The tape cutting device includes a tape thickness identification mechanism (22) and a cutting mechanism (23) disposed on one side of the tape roll (21) away from the winding and adhesion position; the tape thickness identification mechanism (22) includes a driven wheel (221), a first support rod (222), and a piezoelectric sensor (223); the upper end of the first support rod (222) is rotatably connected to and supports the driven wheel (221), and the lower end is fixedly connected to a horizontal shaft (224); the two ends of the horizontal shaft (224) are... Do not insert into the piezoelectric inductor (223), and the passive wheel (221) is always pressed against the surface of the tape roll (21) by a torsion spring sleeved on the outside of the horizontal shaft (224); a torque piezoelectric ceramic (239) is provided inside the piezoelectric inductor (223), and when the horizontal shaft (224) rotates, it drives the torque piezoelectric ceramic (239) to twist and deform to generate a piezoelectric effect, and the magnitude of the generated voltage corresponds to the angle of rotation of the horizontal shaft (224); the cutting mechanism (23) includes a first bottom parallel to the tape roll (21). Shaft (231) and second bottom shaft (232); multiple second support rods (230) are rotatably sleeved on the first bottom shaft (231) at their lower ends, and support a cutter wheel (233) at their upper ends respectively and are rotatably connected to the cutter wheel (233); the long shaft (234) of a parallel tape reel (21) passes through the center of each cutter wheel (233) and drives each cutter wheel (233) to rotate; the long shaft (234) is driven to rotate by a second motor (235); the crossbar (236) of a parallel tape reel (21) is simultaneously It is fixedly connected to the middle of each second support rod (230); the upper end of several electric push rods (237) is rotatably connected to the crossbar (236), and the lower end is rotatably connected to the second bottom shaft (232), driving each cutter wheel (233) to rotate around the first bottom shaft (231); the extension and retraction stroke of the electric push rods (237) is controlled by the controller, which receives and analyzes the voltage data of the torque piezoelectric ceramic (239) to control the second support rod (230) to rotate at the same angle as the first support rod (222); The first support rod (222) and the second support rod (230) are of the same length; the extension line of the first bottom shaft (231) coincides with the horizontal shaft (224); the diameter of the cutter wheel (233) is the same as the diameter of the driven wheel (221). The inner diameter of the cutter wheel (233) is larger than the diameter of the long shaft (234). The inner wall of the cutter wheel (233) is fixedly connected to the outer circumference of the long shaft (234) by an odd number of linear piezoelectric ceramics (238) evenly distributed around the outer circumference of the long shaft (234) with a number greater than or equal to three; each linear piezoelectric ceramic (238) can expand and contract radially along the outer circumference of the long shaft (234) when a voltage is applied; the voltage applied to the linear piezoelectric ceramics (238) is controlled by a controller; the outer ring of the cutter wheel (233) has a micro-serrated structure. Both the torque piezoelectric ceramic (239) and the linear piezoelectric ceramic (238) include multiple linearly superimposed torque piezoelectric ceramic units or linear piezoelectric ceramic units; the controller controls the extension or shortening of each linear piezoelectric ceramic (238) to drive the cutter wheel (233) to superimpose an eccentric motion trajectory at a preset position during rotation; The antistatic agent is a long-chain fatty acid salt, phosphate ester, or amine and its derivatives; the fire retardant is aluminum hydroxide, magnesium hydroxide, organophosphate, or bromide; the plasticizer is phthalate, acetate, or bio-based plasticizer; the stabilizer is organotin or calcium-zinc composite stabilizer; and the adhesive is natural rubber, synthetic rubber, or pressure-sensitive adhesive.

2. The method for preparing the antistatic and fire-retardant PVC tape as described in claim 1, characterized in that, The venting component includes a venting cylinder (203), a connecting cylinder (205), two vent holes (206), a pressure regulating component, an elastic component, and an alarm component. The connecting cylinder (205) is fixedly embedded in the top of the inner wall of the glue tank (1). The venting cylinder (203) is fixedly set on the top of the outer wall of the connecting cylinder (205). Each vent hole (206) is opened on both sides of the outer wall of the venting cylinder (203). The pressure regulating component is located inside the venting cylinder (203). The elastic component is located on the pressure regulating component. The alarm component is located inside the venting cylinder (203).

3. The method for preparing the antistatic and fire-retardant PVC tape as described in claim 2, characterized in that, The pressure regulating assembly includes a threaded rod (207), a pressure plate (208), and two guide rods (209). The threaded rod (207) is rotatably embedded in the top of the outer wall of the venting cylinder (203). The pressure plate (208) is threadedly connected to the outer wall of the threaded rod (207). Each guide rod (209) is fixedly set in the top of the inner wall of the venting cylinder (203), and each guide rod (209) slides through the bottom of the outer wall of the pressure plate (208).

4. The method for preparing the antistatic and fire-retardant PVC tape as described in claim 2, characterized in that, The elastic component includes a first spring (210), a mounting plate (211), a connecting rod (212), a rubber block (213), and two limiting rods (214). One end of the first spring (210) is fixedly disposed at the bottom of the outer wall of the pressure plate (208). The mounting plate (211) is fixedly disposed at one end of the first spring (210). The connecting rod (212) is fixedly disposed at the bottom of the outer wall of the mounting plate (211). The rubber block (213) is fixedly disposed at the bottom of the outer wall of the connecting rod (212). Each limiting rod (214) slides through the top of the outer wall of the mounting plate (211), and each limiting rod (214) is fixedly disposed on both sides of the inner wall of the venting cylinder (203). The rubber block (213) slides into the inner wall of the connecting cylinder (205).

5. The method for preparing the antistatic and fire-retardant PVC tape as described in claim 2, characterized in that, The alarm assembly includes a fixed block (215), a connecting rod (216), a moving block (217), a moving shaft (218), a second spring (219), a touch block (220), and an alarm device (204). The fixed block (215) is fixedly disposed on one side of the outer wall of the connecting rod (212) near the bottom edge. The moving shaft (218) is fixedly disposed on one side of the inner wall of the venting cylinder (203). The moving block (217) slides through one side of the outer wall of the moving shaft (218). The connecting rod (216) is installed between the fixed block (215) and the moving block (217) via a rotating shaft. The second spring (219) is fixedly disposed on one side of the outer wall of the moving block (217). The touch block (220) is fixedly disposed at one end of the second spring (219). The alarm device (204) is installed on one side of the inner wall of the venting cylinder (203).

6. The method for preparing the antistatic and fire-retardant PVC tape as described in claim 1, characterized in that, The drive assembly includes a first bevel gear (308), a second bevel gear (309), a forward and reverse motor (310), and a third bevel gear (311). The forward and reverse motor (310) is installed on the top of the outer wall of the glue tank (1). The third bevel gear (311) is fixedly sleeved on the output end of the forward and reverse motor (310). The first bevel gear (308) is fixedly sleeved on the outer wall of the first stirring drum (306). The second bevel gear (309) is fixedly sleeved on the outer wall of the second stirring drum (307). The first bevel gear (308) and the second bevel gear (309) are both meshed with the third bevel gear (311). A liquid level sensor (4) is installed on one side of the outer wall of the glue tank (1). A heat insulation layer (5) is fixedly sleeved on the outer wall of the heating cylinder (303).

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