A heat-conducting composite adhesive tape and a preparation device thereof

Abstract

The application relates to the technical field of adhesive tape preparation, and discloses a heat-conducting composite adhesive tape and a preparation device thereof, which comprises a rack, a feeding mechanism, a hot-pressing mechanism, a glue scraping mechanism, a hot air drying mechanism and a cooling and cutting mechanism; a sealing box is fixedly connected to the outer side of the rack; the feeding mechanism is arranged on the rack; the hot-pressing mechanism is arranged in the sealing box and is used for hot-pressing different functional layers and transporting and pressing a plurality of materials; the glue scraping mechanism is used for automatically removing residual glue; the inclined chute and the air blowing assembly are used for cooperatively collecting waste glue; the glue removal efficiency is high, the waste glue collection is complete, and the production line is compact; the device integrates the mechanisms used in multiple steps into one device, greatly reduces the land occupation of the production line, is convenient to maintain, the components in the glue scraping mechanism are linked, different operations are simultaneously performed, and the use requirement is met.

Description

Technical Field

[0001] This invention relates to the field of tape preparation technology, specifically to a thermally conductive composite tape and its preparation apparatus. Background Technology

[0002] The production process of thermally conductive composite tape typically involves multiple steps, including raw material processing, substrate preparation, feeding and coating, lamination and hot pressing, adhesive removal and drying, and cooling and cutting. In the adhesive removal process, existing technologies mainly rely on manual operation combined with simple machinery. Operators need to manually use scrapers to clean the residual adhesive on the surface and edges of the tape. This method has significant drawbacks: manual intervention not only leads to low operating efficiency but also makes it difficult to effectively collect the waste adhesive generated during the scraping process. Adhesive fragments are easily scattered in the work area, causing a dirty and messy workshop environment, increasing cleaning difficulty and time costs, and affecting production continuity. In addition, each production step is performed on independent equipment, resulting in a long production line layout, occupying a large amount of factory space, requiring extra turnover for material transfer between equipment, and resulting in high equipment investment and maintenance costs, making it difficult to meet the needs of efficient and economical large-scale production. These problems are particularly prominent in the manufacturing of thermally conductive composite tape, because the thermal conductivity requires strict surface cleanliness, and manual adhesive removal can easily introduce quality fluctuations, restricting product consistency and production efficiency improvement. Summary of the Invention

[0003] The purpose of this application is to provide a thermally conductive composite tape preparation device and a thermally conductive composite tape, which has the advantages of high automatic adhesive removal efficiency, thorough collection of waste adhesive, and compact production line.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A thermally conductive composite tape and its preparation apparatus, comprising:

[0006] The frame is fixedly connected to a sealed box on its outer side;

[0007] The feeding mechanism, which is mounted on the frame, is used for transporting and pressing various materials;

[0008] The hot pressing mechanism, which is set inside a sealed box, is used to hot press different functional layers together.

[0009] The adhesive scraping mechanism, located on one side of the hot pressing mechanism, is used to remove residual adhesive from the surface of the composite tape. The adhesive scraping mechanism includes a scraping table, a side scraping assembly, a vertical rotating rod, and a top scraper. The side scraping assembly is located on both sides inside the scraping table. The vertical rotating rod is rotatably connected to the outer top wall of the scraping table. The top scraper is fixedly connected to the outer wall of the vertical rotating rod. An inclined groove is provided on the bottom side of the side scraping assembly. A blowing assembly that is linked with the side scraping assembly is installed in the inclined groove. The vertical rotating rod is synchronously driven with the side scraping assembly. A belt is installed inside the scraping table, and the belt is connected to the side scraping assembly for transmission.

[0010] A hot air drying mechanism, located on one side of the adhesive scraping mechanism, is used for adhesive layer curing;

[0011] The cooling and cutting mechanism is located on one side of the hot air drying mechanism and is used to cool and cut the tape.

[0012] Furthermore, the feeding mechanism includes a feed reel, a guide roller, a coating roller, and a clamping roller assembly. Multiple feed reels are provided for winding different materials. The guide roller is rotatably connected to the frame. Multiple coating rollers are provided, all of which are rotatably connected to the frame. The clamping roller assembly is rotatably connected to the inner wall of the sealing box. Multiple clamping roller assemblies are provided. The hot pressing mechanism is located between two clamping roller assemblies. A cleaning component is provided between the feed reel and the coating roller for cleaning the material surface.

[0013] Furthermore, the cleaning assembly includes a fixed frame, a main piercing roller, a double clamping roller, and a tensioning wheel. The fixed frame is fixedly connected to the inner wall of the sealed box. The main piercing roller, the double clamping roller, and the tensioning wheel are all rotatably connected to the fixed frame. The double clamping roller includes two round rollers with protrusions on their surfaces. The material passes through the main piercing roller, the double clamping roller, and the tensioning wheel in sequence.

[0014] Furthermore, a guide box is provided on the side of the scraping table near the hot pressing mechanism. The top of the guide box is unfolded, and a collection tank is provided on its bottom side. A guide tube is fixedly connected between the guide box and the collection tank, and one end of the inclined chute is connected to the guide box.

[0015] Furthermore, the side scraping assembly includes a turntable and a side scraper; a motor is fixedly connected to the outer wall of the scraping table, the output shaft of the motor is fixedly connected to the turntable, multiple turntables are provided, symmetrically distributed on both sides of the belt, a connecting shaft is connected between two symmetrical turntables, the side scraper is detachably connected to the turntable, and the surface of the side scraper is in contact with the edge of the tape.

[0016] Furthermore, a drive rod is rotatably connected inside the glue scraping table, a second toothed pulley set is provided between the drive rod and the connecting shaft, multiple shafts are provided on the inner wall of the glue scraping table, and a first toothed pulley set is provided between the motor output shaft and the blowing assembly and the shafts.

[0017] Furthermore, the blower assembly includes a rotating shaft, a bevel gear set, and a fan. The rotating shaft is rotatably connected to the inner wall of the scraping table, the fan is fixedly connected to the rotating shaft, one bevel gear set is connected between the shaft and the rotating shaft, and another bevel gear set is connected between the shaft and the vertical rotating rod.

[0018] Furthermore, a pressing plate is detachably connected to the top of the glue scraping table.

[0019] A thermally conductive composite tape includes a thermally conductive composite tape body comprising a substrate, a modified acrylic adhesive layer, and an outer protective layer, wherein the substrate is disposed between two modified acrylic adhesive layers, and the outer protective layer covers the outer layer of the modified acrylic adhesive layer.

[0020] The technical effects and advantages of this invention are as follows:

[0021] I. This invention automatically removes residual glue through a scraping mechanism and collects waste glue by using a chute and a blowing assembly, effectively solving the problems of low efficiency and glue spillage in manual glue removal. It has the advantages of high automatic glue removal efficiency, thorough collection of waste glue, and compact production line.

[0022] Second, by concentrating the mechanisms used in multiple steps into one device, this invention greatly reduces the floor space required for the production line and facilitates maintenance. The various components within the glue scraping mechanism are linked together and perform different operations simultaneously, thus meeting the usage requirements. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a thermally conductive composite tape preparation device proposed in this invention;

[0024] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a thermally conductive composite tape preparation device proposed in this invention;

[0025] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0027] Figure 5 This is a schematic diagram of the internal structure of the glue scraping table proposed in this invention;

[0028] Figure 6 This is a schematic diagram of a layered structure of a thermally conductive composite tape proposed in this invention.

[0029] In the picture:

[0030] 1. Frame; 11. Sealed box;

[0031] 2. Feeding mechanism; 21. Feed roll; 22. Guide wheel; 23. Cleaning assembly; 231. Fixing frame; 232. Main piercing roller; 233. Double clamping roller; 234. Tensioning wheel; 24. Glue coating roller; 25. Clamping roller assembly;

[0032] 3. Hot pressing mechanism;

[0033] 4. Scraping mechanism; 41. Scraping table; 411. Guide box; 412. Guide tube; 413. Collection tank; 414. Shaft; 42. Motor; 43. Side scraper assembly; 431. Turntable; 432. Side scraper; 433. Connecting shaft; 434. First toothed pulley set; 44. Vertical rotating rod; 45. Top scraper; 46. Belt; 461. Drive rotating rod; 462. Second toothed pulley set; 47. Pressing plate; 48. Inclined groove; 49. Blowing assembly; 491. Rotating shaft; 492. Bevel gear set; 493. Fan;

[0034] 5. Hot air drying mechanism;

[0035] 6. Cooling and cutting mechanism;

[0036] 7. Thermally conductive composite tape body; 71. Substrate; 72. Modified acrylic adhesive layer; 73. Outer protective layer. Detailed Implementation

[0037] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0038] This invention provides, for example Figures 1 to 6 As shown, a thermally conductive composite tape and its preparation apparatus include: a frame 1, on the outside of which a sealed box 11 is fixedly connected;

[0039] The feeding mechanism 2, which is mounted on the frame 1, is used for transporting and pressing various materials;

[0040] The hot pressing mechanism 3 is disposed inside the sealed box 11 and is used to hot press different functional layers together.

[0041] The adhesive scraping mechanism 4 is located on one side of the hot pressing mechanism 3 and is used to remove residual adhesive from the surface of the composite tape. The adhesive scraping mechanism 4 includes an adhesive scraping table 41, a side scraping assembly 43, a vertical rotating rod 44, and a top scraper 45. The side scraping assembly 43 is located on both sides inside the adhesive scraping table 41. The vertical rotating rod 44 is rotatably connected to the outer top wall of the adhesive scraping table 41. The top scraper 45 is fixedly connected to the outer wall of the vertical rotating rod 44. The bottom side of the side scraping assembly 43 is provided with a groove 48. A blowing assembly 49 that is linked with the side scraping assembly 43 is provided in the groove 48. The vertical rotating rod 44 is synchronously driven with the side scraping assembly 43. A belt 46 is provided inside the adhesive scraping table 41 and is connected to the side scraping assembly 43 in a driving connection.

[0042] Hot air drying mechanism 5 is located on one side of adhesive scraping mechanism 4 and is used for adhesive layer curing;

[0043] The cooling and cutting mechanism 6 is located on one side of the hot air drying mechanism 5 and is used to cool and cut the tape.

[0044] For ease of understanding, the following explains some key terms in this embodiment:

[0045] The frame 1 serves as the main support structure of the device, used to support and fix various functional mechanisms. The sealed box 11 is fixedly connected to the outside of the frame 1, providing a relatively closed working environment for the internal hot pressing mechanism 3, which helps to control the temperature and prevent contamination.

[0046] The feeding mechanism 2 is responsible for conveying various raw materials into the device and performing preliminary pressing to ensure continuous material supply and initial forming.

[0047] The hot pressing mechanism 3 is set inside the sealed box 11. Its main function is to perform composite hot pressing on different functional layers so that the multi-layer materials are firmly bonded together to form a semi-finished composite tape. It mainly uses a small hot press, and its model can be selectively installed according to production needs. The existing technology will not be described in detail.

[0048] The adhesive scraping mechanism 4 is one of the core parts of this device. It is used to remove excess adhesive from the surface and edges of the composite tape. The mechanism achieves precise adhesive removal from the tape through the coordinated action of the adhesive scraping table 41, the side scraping assembly 43, the vertical rotating rod 44 and the top scraper 45.

[0049] The scraper table 41 is a support platform for the scraper mechanism 4, and the composite tape passes over it. The side scraper assembly 43 and the top scraper 45 are components that directly contact the tape and perform the scraping action. The side scraper assembly 43 processes the edge of the tape, and the top scraper 45 processes the surface of the tape.

[0050] The inclined groove 48 is set on the bottom side of the side scraper assembly 43 to collect and remove waste glue from the side. The blower assembly 49 is linked with the side scraper assembly 43 to assist in the collection and cleaning of waste glue. The inclined groove 48 here can be a V-shaped groove.

[0051] The belt 46 is disposed inside the glue scraping table 41 and is used to drive or assist the transmission of the belt within the glue scraping mechanism 4.

[0052] The hot air drying mechanism 5 is located after the adhesive scraping mechanism 4 and is used to cure the adhesive layer after adhesive removal, thereby improving the stability and performance of the tape.

[0053] The cooling and cutting mechanism 6 is the final stage of the production line. It is responsible for cooling the cured tape and cutting it precisely according to the preset size to obtain the final product.

[0054] Specifically, this embodiment provides a thermally conductive composite tape preparation device. The frame 1 of the device can be constructed by welding or bolting metal profiles to form the skeleton of the entire device. The sealed box 11 can be a metal shell, which is fixed to the outside of the frame 1 by screws or welding to provide a controlled internal environment.

[0055] The feeding mechanism 2 can be composed of a series of rollers and guide rails. The rollers are driven to rotate by a motor, and various materials such as rolled substrate and adhesive layer are continuously fed into the device. During the material conveying process, a pair of pressure rollers can perform preliminary pressing on the materials to ensure close contact between the layers of materials.

[0056] The hot pressing mechanism 3 is located inside the sealed box 11. It can be composed of a heating plate and a pressure roller. The heating plate provides the required heat through an electric heating element, while the pressure roller applies uniform pressure to the composite material, so that different functional layers can achieve a firm composite under high temperature and high pressure.

[0057] The scraping mechanism 4 is located on one side of the hot pressing mechanism 3 and is used to remove excess adhesive from the surface and edges of the composite tape. The scraping mechanism 4 includes a scraping table 41, a side scraping assembly 43, a vertical rotating rod 44, and a top scraper 45. The scraping table 41 can be a flat support platform for carrying and guiding the composite tape through. The side scraping assembly 43 can consist of two independent scrapers, which are respectively installed on both sides inside the scraping table 41. Their positions can be manually adjusted to accommodate tapes of different widths and are used to scrape off excess adhesive from the edges of the tape. The vertical rotating rod 44 can be mounted on the top outer wall of the scraping table 41 via a bearing seat, allowing it to rotate freely. The top scraper 45 can be a rectangular scraper blade, which is fixed to the outer wall of the vertical rotating rod 44 by bolts and is used to scrape off residual adhesive from the surface of the tape.

[0058] The bottom side of the side scraper assembly 43 may be provided with a sloping groove 48. The sloping groove 48 may be an inclined flow guide structure formed at the bottom of the scraper table 41 to guide the scraped waste glue. A blowing assembly 49 may be provided in the sloping groove 48. The blowing assembly 49 may be a small fan connected to the side scraper assembly 43 through a simple mechanical linkage or gear. When the side scraper assembly 43 is working, the blowing assembly 49 starts synchronously and generates airflow to blow the waste glue into the collection container.

[0059] The vertical rotating rod 44 and the side scraping assembly 43 can be synchronously driven by a gear set or chain drive mechanism to ensure that they move at a coordinated speed, thereby achieving coordinated scraping of the tape edge and surface. A belt 46 can be installed inside the scraping table 41. This belt 46 can be a conveyor belt used to carry and transport the tape. The belt 46 can be connected to the drive mechanism of the side scraping assembly 43 via simple gears or friction wheels to achieve linkage and ensure stable transmission of the tape in the scraping area.

[0060] The hot air drying mechanism 5 is located on one side of the adhesive scraping mechanism 4. It can consist of an electric heater and a fan. The heater generates hot air, and the fan blows the hot air evenly onto the surface of the tape to accelerate the evaporation of solvent in the adhesive layer, thereby achieving rapid curing of the adhesive layer.

[0061] The cooling and cutting mechanism 6 is located on one side of the hot air drying mechanism 5. It may include a cooling roller and a cutter. Cooling water or cold air can be introduced into the cooling roller to quickly cool down the cured tape. The cutter may be a fixed or rotating blade to precisely cut the tape laterally or longitudinally as it passes through, so as to obtain the final product of the required size.

[0062] In some embodiments described above in this application, a thermally conductive composite tape preparation apparatus is proposed, wherein the feeding mechanism 2 is used for transporting and pressing various materials. However, in the actual preparation of thermally conductive composite tape, the accurate transport and positioning of various materials, as well as the surface cleaning before coating, are crucial to ensuring the quality of the final product and production efficiency. If the materials are not effectively cleaned or accurately guided before entering the coating and hot pressing stages, it may lead to poor tape bonding, weak adhesion, or surface defects, thereby affecting the performance and yield of the thermally conductive composite tape.

[0063] In this regard, this application further proposes that the feeding mechanism 2 includes a feeding reel 21, a guide wheel 22, a coating roller 24, and a clamping roller group 25; multiple feeding reels 21 are provided for winding different materials; the guide wheel 22 is rotatably connected to the frame 1; multiple coating rollers 24 are provided, and all are rotatably connected to the frame 1; the clamping roller group 25 is rotatably connected to the inner wall of the sealing box 11, and multiple clamping roller groups 25 are provided; the hot pressing mechanism 3 is located between two clamping roller groups 25; a cleaning component 23 is provided between the feeding reel 21 and the coating roller 24 for cleaning the material surface.

[0064] Specifically, the feed roller 21 is a component used to carry and unwind the roll of material to be processed; it usually exists in the form of a spool, and the wound material is gradually fed out through rotation; multiple feed rollers 21 are set to adapt to the needs of various materials (such as substrate, release film, functional layer, etc.) in the preparation process of thermally conductive composite tape, ensuring that each layer of material can enter the subsequent processing stage synchronously or sequentially; each feed roller 21 can independently control its winding and unwinding speed and tension to ensure the smoothness and accuracy of material conveying; the guide roller 22 is usually a smooth cylindrical roller, and its main function is to guide the material to run smoothly on the preset path and prevent the material from deviating. Wrinkles or entanglements; guide wheels 22 are rotatably connected to the frame 1 to ensure smooth material sliding and reduce frictional resistance; by rationally arranging guide wheels 22, the direction and tension of material movement can be precisely controlled, providing a stable material flow for subsequent coating and lamination processes; the coating roller 24 is a key component for uniformly coating the adhesive onto the material surface; it typically has precise surface treatment and structural design to ensure the consistency and uniformity of the coating thickness; setting multiple coating rollers 24 allows for independent coating of different material layers or multi-layer coating of the same material layer to meet the requirements of different adhesive layer properties and thicknesses for thermal conductive composite tapes. The requirements are as follows: the coating roller 24 is rotatably connected to the frame 1, and the coating amount is precisely controlled by precisely controlling its rotation speed and contact pressure with the material; the clamping roller group 25 consists of one or more pairs of rollers, and its main function is to apply pressure during the material lamination process to make different material layers or coating layers fit tightly together; the clamping roller group 25 is rotatably connected to the inner wall of the sealing box 11 to ensure its stable operation inside the device; setting multiple clamping roller groups 25 can perform pre-pressing or auxiliary pressing before or after the material enters the hot pressing mechanism 3 to improve the uniformity and firmness of the lamination; by adjusting the gap and pressure of the clamping roller group 25, it can adapt to different thicknesses. The cleaning component 23 is located between the feed reel 21 and the coating roller 24. Its core function is to thoroughly clean the surface of the material before coating. This is because the material may adsorb dust, fibers or other impurities during storage and transportation. If these impurities are not removed, they will seriously affect the adhesion and uniformity of the adhesive layer, as well as the thermal conductivity and appearance quality of the final product. The cleaning component 23 can be implemented using a variety of technologies, such as brushing off surface particles with a brush roller, blowing off floating dust with a high-pressure airflow, or combining electrostatic elimination and dust collection devices to ensure the cleanliness of the material surface and lay the foundation for subsequent high-quality coating and lamination.

[0065] Through the above technical solution, the feeding mechanism 2 is refined into multiple functional components including a feed reel 21, a guide roller 22, a coating roller 24, and a clamping roller group 25, forming a well-structured and functionally coordinated material conveying and processing system. The multiple feed reels 21 enable the device to flexibly handle various types of materials, meeting the needs of multi-layer composite tape structures. The guide roller 22 ensures the precise path and stable tension of the material during conveying, effectively preventing material deviation or wrinkling. The multiple coating rollers 24 can achieve precise and uniform coating according to the requirements of different material layers or adhesive layers. Glue application; multiple sets of clamping rollers 25 perform pre-pressing or auxiliary pressing before and after the hot pressing mechanism 3, further improving the tightness and uniformity of the composite; more importantly, a cleaning component 23 is set between the feeding roller 21 and the glue application roller 24, which can effectively remove surface impurities before the material is glued, avoiding problems such as poor adhesion of the glue layer and composite defects caused by unclean materials from the source; overall, the design of the feeding mechanism 2 significantly improves the accuracy, cleanliness and composite quality of material handling during the preparation of thermal conductive composite tape, thereby ensuring the performance stability and production efficiency of the final product.

[0066] In some embodiments of this application, a cleaning component 23 is provided in the feeding mechanism 2 for cleaning the material surface. However, in the preparation process of thermally conductive composite tape, the cleanliness of the material surface directly affects the quality of subsequent coating and lamination. If the cleaning is not thorough, the adhesive layer may not adhere firmly or bubbles may be generated, thereby affecting the performance and yield of the thermally conductive composite tape. Therefore, a more efficient cleaning method that does not damage the material is needed.

[0067] In response, this application further proposes a cleaning component 23 including a fixed frame 231, a main piercing roller 232, a double clamping roller 233, and a tensioning wheel 234. The fixed frame 231 is fixedly connected to the inner wall of the sealed box 11, providing a stable mounting base and support for the main piercing roller 232, the double clamping roller 233, and the tensioning wheel 234, ensuring that these rollers can rotate precisely and work collaboratively. The main piercing roller 232, the double clamping roller 233, and the tensioning wheel 234 are all rotatably connected to the fixed frame 231, ensuring their smooth operation during the cleaning process. The double clamping roller 233 includes two circular rollers with raised surfaces. These raised surfaces can be fine bristles, tiny conical or cylindrical protrusions, which effectively loosen and scrape off larger particles or dust adhering to the material surface through contact and friction. The material passes sequentially through the main piercing roller 232, the double clamping roller 233, and the tensioning wheel 234, forming a multi-stage, progressive cleaning process.

[0068] Specifically, the material first contacts the main barb roller 232, whose surface is typically covered with small protrusions or bristles for initial physical scraping of the material surface to remove larger dust particles and loose impurities. Next, the material enters the double clamping roller 233, which consists of two cylindrical rollers with raised surfaces. Through clamping and squeezing action, combined with the raised surfaces, the material surface is cleaned more deeply, effectively removing fine particles and stubborn stains that the main barb roller 232 failed to completely remove. Finally, the material passes through the tensioning wheel 234, which is typically a smooth cylindrical roller. Its main function is to maintain appropriate tension on the material during the cleaning process, preventing the material from loosening or overstretching, thus ensuring uniform cleaning results and preventing deformation or damage to the material during cleaning.

[0069] Through the above technical solution, the cleaning component 23 adopts a multi-stage cleaning design. First, the main piercing roller 232 performs preliminary physical scraping on the material surface, effectively removing larger floating dust and loose impurities, preventing them from entering subsequent stages and causing contamination or damage. Subsequently, the material enters the double clamping roller 233, whose surface has raised round rollers that can finely rub and squeeze the material, further removing fine particles and stubborn stains that the main piercing roller 232 could not completely remove, significantly improving the cleanliness of the material surface. Finally, the tensioning roller 234 ensures that the material maintains stable tension during the cleaning process, preventing material deformation or uneven cleaning. This progressive cleaning process not only improves cleaning efficiency and thoroughness, but also effectively avoids excessive wear on the material surface, providing a highly clean substrate surface for the subsequent coating operation of the coating roller 24. Therefore, it can significantly improve the adhesion between the modified acrylic adhesive layer 72 and the substrate 71, reduce the generation of bubbles and defects, thereby ensuring the thermal conductivity and service life of the thermally conductive composite tape, and improving the overall quality and production efficiency of the product.

[0070] In the preparation process of thermally conductive composite tape, the scraping mechanism 4 is used to remove the adhesive residue on the surface of the composite tape. However, during the scraping process, the scraped adhesive often falls into the equipment, which may not only cause equipment pollution and affect the cleanliness of subsequent production, but also make it inconvenient to recycle and dispose of waste adhesive, increasing production costs and environmental burden.

[0071] In response, this application further proposes an improved scraping mechanism, wherein a guide box 411 is provided on the side of the scraping table 41 near the hot pressing mechanism 3, the top of the guide box 411 is unfolded, and a collection tank 413 is provided on its bottom side. A conduit 412 is fixedly connected between the guide box 411 and the collection tank 413, and one end of the inclined groove 48 is connected to the guide box 411.

[0072] Specifically, the guide box 411 is a container for collecting residual adhesive scraped from the surface of the composite tape. It is located on the side of the scraper table 41 near the hot pressing mechanism 3, that is, near the entrance of the tape into the scraping area, to ensure that the residual adhesive can be guided to the collection path as soon as it is scraped off. The guide box 411 is usually made of corrosion-resistant and easy-to-clean materials (such as stainless steel, engineering plastics, etc.), and its shape and size should match the structure of the scraper table 41 and the running path of the tape. Its top unfolding design is designed to maximize the reception of adhesive scraped off the surface of the tape and prevent it from splashing or scattering.

[0073] The collection tank 413 is a container used to centrally store the residual adhesive collected from the guide box 411. It is usually located on the bottom side of the guide box 411 and connected to the guide box 411 through the conduit 412 to form a closed collection system, which facilitates the subsequent unified treatment or recycling of waste adhesive. The collection tank 413 can be a detachable container for regular emptying and maintenance. Its material should also consider corrosion resistance and sealing performance to prevent adhesive leakage or volatilization. The capacity of the collection tank 413 can be designed according to the production line output and adhesive scraping amount to reduce the frequency of emptying.

[0074] The conduit 412 is a channel connecting the guide box 411 and the collection tank 413, used to transport the residual adhesive collected in the guide box 411 to the collection tank 413; the conduit 412 is usually a pipe-like structure, and its inner wall should be smooth to reduce the adhesion and blockage of the adhesive during the transportation process; the diameter and inclination angle of the conduit 412 should be designed to ensure that the adhesive can flow smoothly into the collection tank 413 by gravity or other auxiliary means (such as airflow); the conduit 412 is fixedly connected to the guide box 411 and the collection tank 413 to ensure the firmness and sealing of the connection.

[0075] The inclined groove 48 is a structure on the bottom side of the side scraping component 43 in the scraping mechanism 4 used to guide the scraped adhesive. One end of it is connected to the guide box 411, which aims to directly guide the adhesive scraped by the side scraping component 43 into the guide box 411, thereby collecting all the scraped residual adhesive. The connection design of the inclined groove 48 ensures that the waste adhesive generated during the scraping process can be effectively collected. The outlet end of the inclined groove 48 is precisely aligned and connected with the inlet end of the guide box 411 to form a seamless transition area to prevent the adhesive from overflowing during the transfer process. This connection method can be achieved by welding, bolt fixing or snap-fit ​​connection to ensure the stability and sealing of the connection.

[0076] Through the above technical solution, the scraping table 41, guide box 411, collection tank 413, conduit 412, and inclined chute 48 are integrated and connected to form an efficient and comprehensive residual adhesive collection system. During the scraping process, whether it is the adhesive scraped by the side scraping component 43 or the residual adhesive that may be generated in other parts, it can be effectively guided by the inclined chute 48 and guide box 411, and smoothly flow into the collection tank 413 for centralized storage through the conduit 412. This significantly avoids the scraped adhesive from scattering inside the sealed box 11, thereby greatly reducing the risk of pollution inside the equipment and ensuring the cleanliness of the production environment. At the same time, the centralized collection of waste adhesive also greatly simplifies the subsequent recycling process, helps to reduce production costs, reduces the impact on the environment, and improves the automation level and environmental performance of the entire preparation device.

[0077] In response, this application further proposes a thermally conductive composite tape preparation device. When the side scraping component 43 in the scraping mechanism 4 removes residual adhesive from the edge of the composite tape, it may face problems such as uneven scraping effect, rapid scraper wear, and difficulty in adapting to different tape specifications. This may result in poor cleanliness of the tape edge, affecting subsequent processes and the quality of the final product.

[0078] To address the aforementioned issues, this application further proposes that the side scraping assembly includes a turntable 431 and a side scraper 432; a motor 42 is fixedly connected to the outer wall of the scraping table 41, the output shaft of the motor 42 is fixedly connected to the turntable 431, multiple turntables 431 are provided, symmetrically distributed on both sides of the belt 46, a connecting shaft 433 connects two symmetrical turntables 431, the side scraper 432 is detachably connected to the turntable 431, and the surface of the side scraper 432 is in contact with the edge of the tape.

[0079] Specifically, the turntable 431, as the core driving component of the side scraping assembly 43, primarily functions to support and drive the side scraper 432 to rotate. The turntable 431 can be designed as a circular, elliptical, or other geometrically shaped disc structure, and its material can be selected from high-strength, wear-resistant metals or engineering plastics to ensure stability and durability under high-speed rotation and scraping pressure. The side scraper 432 is a functional component that directly contacts the edge of the composite tape to remove excess adhesive. The material of the side scraper 432 can be selected according to the characteristics of the tape being processed and the adhesive's viscosity; for example, it can be made of wear-resistant rubber, polyurethane, Teflon, or specific alloy materials. Its shape can be designed as a straight edge, an arc, or a blade with a specific angle to optimize the scraping effect and reduce damage to the tape. Motor 42 is the actuator that provides rotational power to the side scraping assembly 43. Motor 42 can be an AC motor, DC motor, stepper motor, or servo motor, the specific choice depending on the required speed, torque accuracy, and control requirements. Motor 42 is fixed to the outer wall of the scraping table 41 by bolts, welding, or other reliable connection methods to ensure its stability and accurate power output during operation. The output shaft of motor 42 is fixedly connected to the turntable 431. This fixed connection ensures that the rotational power generated by motor 42 can be directly and efficiently transmitted to the turntable 431, enabling the turntable 431 to rotate precisely according to the preset speed and direction. The fixed connection can be achieved through key connections, expansion sleeve connections, threaded connections, or integrated designs to prevent… To prevent relative slippage and ensure transmission rigidity, multiple turntables 431 are symmetrically distributed on both sides of the belt 46 to achieve synchronous and uniform scraping of adhesive on both sides of the composite tape. This configuration ensures that excess adhesive on both sides of the tape is removed simultaneously and with similar force, avoiding uneven tape stress or differences in scraping effect caused by scraping on one side. A connecting shaft 433 connects the two symmetrical turntables 431, which mechanically connects the two symmetrically distributed turntables 431, thereby ensuring that they can rotate synchronously. Through the connecting shaft 433, the movement of one turntable 431 can drive the other turntable 431 to perform the same movement, ensuring the coordination and consistency of the scraping action, and further improving the uniformity and stability of scraping. The side scraper 432 and the turntables 431 are connected. The detachable connection method of 31, such as through screws, clips, pins, or quick-release mechanisms, greatly improves the ease of maintenance and adaptability of the device. When the side scraper 432 needs to be replaced due to wear, a new scraper can be quickly disassembled and installed, reducing downtime. At the same time, this design also facilitates the replacement of side scrapers 432 of different sizes or materials according to different tape widths, thicknesses, or adhesive characteristics, thereby optimizing the scraping effect. The close fit between the surface of the side scraper 432 and the edge of the composite tape is the key to achieving effective scraping. This fit can be achieved through precise mechanical design, selection of flexible scraper materials, or appropriate pressure adjustment mechanisms, ensuring that the scraper can effectively scrape off the overflowing adhesive from the edge of the tape while avoiding damage to the tape itself.

[0080] By introducing a side scraping assembly 43 consisting of a turntable 431 driven by a motor 42 and a detachable side scraper 432, this device can achieve precise and efficient removal of excess adhesive from the edges of the composite tape. The motor 42 drives the turntable 431 to rotate, causing the side scraper 432 to dynamically contact the tape edge. Compared with static scraping, this rotating scraping method can provide more uniform scraping pressure and less local wear, thereby extending the service life of the side scraper 432. The symmetrically distributed turntables 431 move synchronously through the connecting shaft 433, ensuring the consistency of scraping on both sides of the tape and effectively avoiding quality problems caused by uneven scraping. In addition, the detachable connection design of the side scraper 432 allows operators to quickly replace or adjust the scraper according to the characteristics of different tapes or the wear condition of the scraper, greatly improving the adaptability and maintenance efficiency of the equipment, and ultimately improving the preparation quality and production efficiency of the thermally conductive composite tape.

[0081] In some embodiments of this application, the adhesive scraping mechanism 4 works in concert with the adhesive scraping table 41, the side scraping assembly 43, the vertical rotating rod 44, the top scraper 45, and the belt 46 to remove residual adhesive from the surface of the composite tape. However, in actual operation, how to ensure that the belt 46, the side scraping assembly 43, the blowing assembly 49, and the vertical rotating rod 44 inside the adhesive scraping table 41 can achieve efficient, precise, and synchronous transmission to ensure the stability and consistency of the adhesive scraping and cleaning process is a technical problem that needs to be solved.

[0082] In this regard, this application further proposes that a drive rod 461 is rotatably connected inside the scraping table 41. This drive rod 461, as an intermediate link in power transmission, is typically a solid or hollow metal rod, smoothly rotatably connected to the scraping table 41 via bearings or other means, responsible for transmitting power to the belt 46 or other components requiring drive. A second toothed pulley set 462 is provided between the drive rod 461 and the connecting shaft 433. This toothed pulley set consists of at least two toothed pulleys and a toothed belt, with a precise transmission ratio, no slippage, and high transmission efficiency, ensuring that the rotational motion of the drive rod 461 is accurately transmitted to the connecting shaft 433, thereby driving the side... The scraping assembly 43; meanwhile, the inner wall of the scraping table 41 is provided with multiple shafts 414, which serve as support and transmission shafts for installing and supporting other transmission components, such as toothed pulleys and gears, providing a basis for subsequent power distribution and transmission; in addition, a first toothed pulley set 434 is provided between the output shaft of the motor 42 and the blowing assembly 49 and the shafts 414. This toothed pulley set is also composed of toothed pulleys and toothed belts, and its function is to distribute and transmit the power of the motor 42 to the blowing assembly 49 and the shafts 414, thereby realizing the synchronous or proportional transmission of the blowing assembly 49 and the shafts 414, and ensuring the coordination of scraping and blowing actions.

[0083] Through the above technical solution, this application constructs an integrated mechanical transmission system; the power of the motor 42 is efficiently and accurately distributed to the blowing assembly 49 and the shaft 414 through the first toothed pulley set 434, ensuring the timeliness of the blowing operation; at the same time, the drive rod 461 is connected to the belt 46 for transmission, and the power is accurately transmitted to the connecting shaft 433 of the side scraping assembly 43 through the second toothed pulley set 462; this design enables the belt 46, the side scraping assembly 43, the blowing assembly 49 and the vertical rod 44 (indirectly driven through the shaft 414) inside the scraping mechanism 4 to achieve highly synchronized and coordinated movement; the use of the toothed pulley set ensures the accuracy and slip-free transmission, thereby significantly improving the stability, uniformity and efficiency of the scraping and cleaning process, effectively avoiding the problem of incomplete scraping or tape damage caused by asynchronous transmission, and ultimately improving the preparation quality of the thermally conductive composite tape.

[0084] In some embodiments of this application, the scraping mechanism 4 cleans the adhesive residue on the surface of the composite tape using the blowing assembly 49. However, in actual operation, how to ensure that the blowing assembly 49 can work efficiently and accurately with the scraping action and provide a stable airflow to thoroughly remove the scraped adhesive while simplifying the transmission structure is a technical problem that needs further optimization.

[0085] In this regard, the present application further proposes that the blower assembly 49 includes a rotating shaft 491, a bevel gear set 492 and a fan 493. The rotating shaft 491 is rotatably connected to the inner wall of the scraping table 41, the fan 493 is fixedly connected to the rotating shaft 491, one bevel gear set 492 is connected between the shaft 414 and the rotating shaft 491, and another bevel gear set 492 is connected between the shaft 414 and the vertical rotating rod 44.

[0086] Specifically, the rotating shaft 491, serving as the rotational support for the fan 493, is typically rotatably connected to the inner wall of the scraping table 41 via bearings to ensure smooth rotation and low friction. The fan 493 is fixedly connected to the rotating shaft 491, ensuring that the rotation of the shaft 491 can be fully transmitted to the fan 493, thereby generating a stable airflow. The blade design of the fan 493 can be optimized according to the required airflow and air pressure to efficiently blow away the scraped colloid in the inclined groove 48. The bevel gear set 492 is a highly efficient transmission mechanism capable of realizing the movement between intersecting shafts. Force transmission; In this scheme, a bevel gear set 492 is cleverly connected between the shaft 414 and the rotating shaft 491, transmitting the rotational power of the shaft 414 to the rotating shaft 491, thereby driving the fan 493 to work; At the same time, another bevel gear set 492 is connected between the shaft 414 and the vertical rotating rod 44, so that the power of the shaft 414 can also be transmitted to the vertical rotating rod 44; Since the vertical rotating rod 44 and the side scraper assembly 43 are synchronously driven, this design ensures that the blowing assembly 49 and the side scraper assembly 43 achieve precise mechanical linkage.

[0087] Through the above technical solution, the structure of the blowing assembly 49 is defined as including a rotating shaft 491, a bevel gear set 492, and a fan 493. The bevel gear set 492 realizes the precise mechanical linkage between the blowing assembly 49 and the side scraping assembly 43 and the vertical rotating rod 44 in the scraping mechanism 4. This linkage mechanism ensures that while the side scraping assembly 43 is performing scraping operations, the fan 493 can start synchronously and generate a stable airflow, effectively and promptly blowing away the scraped adhesive from the inclined groove 48, thereby avoiding the problem of adhesive accumulating in the inclined groove 48 or re-contaminating the tape surface. In addition, the introduction of the bevel gear set 492 makes it possible to achieve multi-axial power transmission in a limited space, simplifies the transmission structure, improves the compactness and reliability of the device, and significantly improves the efficiency and cleanliness of the scraping process.

[0088] In some of the embodiments described above in this application, when scraping off the adhesive residue on the surface of the composite tape, if the tape is not effectively pressed and fixed on the scraping table 41, the scraping process may be unstable, affecting the uniformity of the scraping effect, or even causing the tape to shake or shift. In addition, the maintenance and cleaning of the scraping mechanism 4 may also be inconvenient.

[0089] In this regard, this application further proposes that a pressing plate 47 is detachably connected to the top of the glue scraping table 41.

[0090] Specifically, the pressing plate 47 is a plate-like structure whose main function is to apply stable downward pressure to the composite tape moving on the scraper table 41, ensuring the tape remains stable during scraping and preventing warping, shaking, or displacement under scraping force, thereby improving the accuracy and uniformity of scraping. The pressing plate 47 can be made of wear-resistant and corrosion-resistant materials, such as stainless steel, polymer materials (such as polytetrafluoroethylene), or specially treated metal plates. Its bottom surface can be designed to be smooth or have microstructures to reduce frictional damage to the tape while providing sufficient pressing force. The dimensions of the pressing plate 47 should cover the scraping area and be able to adapt to the production needs of tapes of different widths. "Detachable connection" refers to the connection between the pressing plate 47 and the scraper table 41 via a... The non-permanent connection method allows for convenient installation, disassembly, or replacement when needed. For example, the pressing plate 47 can be fixed to the top of the scraping table 41 with bolts and nuts, and the bolts can be unscrewed for disassembly. Alternatively, a quick-release buckle or locking device can be designed, allowing the pressing plate 47 to be fixed and released through simple operations (such as pressing or rotating). Magnetic or sliding rail connections can also be used to provide a more convenient installation and disassembly method. This detachable connection design greatly facilitates the cleaning, maintenance, or replacement of the pressing plate 47 itself, and also makes it easier to inspect, adjust, or repair the scraping components inside the scraping table 41 (such as the side scraping component 43, top scraper 45, etc.), thereby shortening downtime and improving equipment maintenance efficiency.

[0091] Through the above technical solution, a detachable pressing plate 47 is provided on the top of the scraping table 41, which can apply a stable pressing effect to the composite tape undergoing scraping, making it tightly adhere to the scraping table 41. This effectively prevents the tape from shaking, warping, or shifting due to uneven force or tension changes during the scraping process, thereby significantly improving the stability and uniformity of scraping and ensuring the complete removal of residual adhesive from the tape surface. At the same time, the detachable design of the pressing plate 47 greatly facilitates the daily cleaning, maintenance, and replacement of the scraping components inside the scraping table 41, effectively shortening equipment downtime and improving equipment maintenance efficiency and overall production efficiency.

[0092] Reference Figures 1-6 This application further proposes a thermally conductive composite tape, wherein the thermally conductive composite tape body 7 includes a substrate 71, a modified acrylic adhesive layer 72 and an outer protective layer 73, the substrate 71 is disposed between two modified acrylic adhesive layers 72, and the outer protective layer 73 covers the outer layer of the modified acrylic adhesive layer 72.

[0093] The thermally conductive composite tape body 7 is the final product prepared in this application. Its core function is to achieve efficient heat conduction and provide reliable adhesion and protection. Through the composite of multiple layers of materials, the body 7 aims to meet the growing demand for thermal management materials in fields such as electronic devices and new energy vehicles.

[0094] The substrate 71 serves as the skeleton of the thermally conductive composite tape body 7, mainly providing mechanical support and structural stability. Its material can be a film with good dimensional stability, high temperature resistance and certain thermal conductivity, such as polyimide (PI) film, glass fiber cloth, polyester (PET) film or ultra-high molecular weight polyethylene (UHMWPE) film. The selection of the substrate 71 directly affects the overall strength, flexibility and performance of the tape in extreme environments.

[0095] Modified acrylic adhesive layer 72 is a key component for achieving thermal conductivity and adhesion. This adhesive layer is modified by introducing thermally conductive fillers into traditional acrylic adhesive to significantly improve its thermal conductivity. Commonly used thermally conductive fillers include, but are not limited to, alumina, boron nitride, zinc oxide, silicon carbide, graphene, and carbon nanotubes. These fillers are uniformly dispersed in the acrylic adhesive matrix in the form of micron or nano-sized particles to form thermally conductive pathways. At the same time, the acrylic adhesive itself has excellent adhesion, weather resistance, and aging resistance, ensuring that the tape can maintain stable adhesion during long-term use.

[0096] The outer protective layer 73 is located on the outermost side of the thermally conductive composite tape body 7. Its main function is to provide physical protection for the internal modified acrylic adhesive layer 72, preventing it from being contaminated, scratched, or oxidized during storage, transportation, and use. In addition, the outer protective layer 73 can also provide additional insulation, moisture protection, or abrasion resistance. Common materials include polyester (PET) film, polypropylene (PP) film, polyethylene (PE) film, or fluoroplastic film. Sometimes, films with release properties are also used to facilitate subsequent applications of the tape.

[0097] The substrate 71 is disposed between two modified acrylic adhesive layers 72, forming a "sandwich" structure. This symmetrical sandwich design helps to disperse stress and improve the overall strength and tear resistance of the tape. At the same time, the two modified acrylic adhesive layers 72 can provide double-sided adhesion and thermal conductivity, making the tape more flexible in application, allowing it to bond two surfaces and conduct heat at the same time.

[0098] The outer protective layer 73 covers the outer layer of the modified acrylic adhesive layer 72, further enhancing the protective performance of the tape. Before the tape is used, this protective layer can effectively isolate the external environment and prevent dust, moisture and other contaminants from penetrating the modified acrylic adhesive layer 72, thereby maintaining the cleanliness and adhesive activity of the adhesive layer surface. In some applications, the outer protective layer 73 can also be used as a release film, which is peeled off during use to expose the adhesive modified acrylic adhesive layer 72.

[0099] Through the above technical solution, the specific lamination structure of the thermally conductive composite tape body 7 can significantly improve its comprehensive performance. The substrate 71 is sandwiched between two layers of modified acrylic adhesive 72, which not only provides the tape with the necessary mechanical strength and dimensional stability, effectively preventing the tape from deforming under stress or temperature changes, but also gives the tape double-sided thermal conductivity and adhesion capabilities, greatly expanding its application range. The modified acrylic adhesive 72, by introducing thermally conductive fillers, ensures that heat can be efficiently conducted from the heat source to the heat sink, thereby effectively solving the thermal management problems in fields such as electronic devices. Meanwhile, the excellent bonding properties of acrylic adhesive ensure a strong bond between the tape and the bonded object. The outer protective layer 73 provides comprehensive physical and chemical protection for the internal modified acrylic adhesive layer 72, effectively preventing the adhesive layer from being contaminated, scratched, or corroded by the environment during storage, transportation, and use, thereby extending the service life of the tape and maintaining its initial performance. Overall, this structural design enables the thermally conductive composite tape to exhibit excellent performance in terms of thermal conductivity, bonding strength, structural stability, and environmental adaptability, meeting the demand for high-performance thermal management materials.

[0100] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A device for preparing thermally conductive composite tape, characterized in that, include: The frame (1) has a sealed box (11) fixedly connected to its outer side; The feeding mechanism (2), which is set on the frame (1), is used for the transportation and pressing of various materials; The hot pressing mechanism (3) is located inside the sealed box (11) and is used to hot press different functional layers together. The adhesive scraping mechanism (4) is located on one side of the hot pressing mechanism (3) and is used to remove the adhesive residue on the surface of the composite tape. The adhesive scraping mechanism (4) includes an adhesive scraping table (41), a side scraping assembly (43), a vertical rotating rod (44), and a top scraper (45). The side scraping assembly (43) is located on both sides inside the adhesive scraping table (41). The vertical rotating rod (44) is rotatably connected to the outer top wall of the adhesive scraping table (41). The top scraper (45) is fixedly connected to the outer wall of the vertical rotating rod (44). The bottom side of the side scraping assembly (43) is provided with a sloping groove (48). A blowing assembly (49) that is linked with the side scraping assembly (43) is provided in the sloping groove (48). The vertical rotating rod (44) is synchronously driven with the side scraping assembly (43). A belt (46) is provided in the adhesive scraping table (41). The belt (46) is connected to the side scraping assembly (43) in a driving connection. Hot air drying mechanism (5), which is located on one side of adhesive scraping mechanism (4), is used for adhesive layer curing; The cooling and cutting mechanism (6) is located on one side of the hot air drying mechanism (5) and is used to cool and cut the tape.

2. The thermally conductive composite tape preparation device according to claim 1, characterized in that, The feeding mechanism (2) includes a feed reel (21), a guide wheel (22), a glue-applying roller (24), and a clamping roller assembly (25). Multiple feed reels (21) are provided for winding different materials. The guide wheel (22) is rotatably connected to the frame (1). Multiple glue-applying rollers (24) are provided and are rotatably connected to the frame (1). The clamping roller group (25) is rotatably connected to the inner wall of the sealing box (11). Multiple clamping roller groups (25) are provided. The hot pressing mechanism (3) is located between two clamping roller groups (25). A cleaning component (23) is provided between the feed reel (21) and the glue-applying roller (24) for cleaning the material surface.

3. The apparatus for preparing thermally conductive composite tape according to claim 2, characterized in that, The cleaning component (23) includes a fixed frame (231), a main piercing roller (232), a double clamping roller (233), and a tensioning wheel (234). The fixed frame (231) is fixedly connected to the inner wall of the sealed box (11). The main piercing roller (232), the double clamping roller (233), and the tensioning wheel (234) are all rotatably connected to the fixed frame (231). The double clamping roller (233) includes two round rollers with protrusions on their surfaces. The material passes through the main piercing roller (232), the double clamping roller (233), and the tensioning wheel (234) in sequence.

4. The apparatus for preparing thermally conductive composite tape according to claim 1, characterized in that, The scraping table (41) is provided with a guide box (411) on the side near the hot pressing mechanism (3). The top of the guide box (411) is unfolded, and a collection tank (413) is provided on its bottom side. A conduit (412) is fixedly connected between the guide box (411) and the collection tank (413). One end of the inclined groove (48) is connected to the guide box (411).

5. The apparatus for preparing a thermally conductive composite tape according to claim 1, characterized in that, The side scraping assembly includes a turntable (431) and a side scraper (432). A motor (42) is fixedly connected to the outer wall of the glue scraping table (41). The output shaft of the motor (42) is fixedly connected to the turntable (431). Multiple turntables (431) are provided and symmetrically distributed on both sides of the belt (46). A connecting shaft (433) is connected between two symmetrical turntables (431). The side scraper (432) is detachably connected to the turntable (431), and the surface of the side scraper (432) is in contact with the edge of the tape.

6. The apparatus for preparing a thermally conductive composite tape according to claim 1, characterized in that, The scraping table (41) is rotatably connected to a drive rod (461). A second toothed pulley set (462) is provided between the drive rod (461) and the connecting shaft (433). Multiple shafts (414) are provided on the inner wall of the scraping table (41). A first toothed pulley set (434) is provided between the output shaft of the motor (42) and the blowing assembly (49) and the shafts (414).

7. The apparatus for preparing a thermally conductive composite tape according to claim 6, characterized in that, The blower assembly (49) includes a rotating shaft (491), a bevel gear set (492), and a fan (493). The rotating shaft (491) is rotatably connected to the inner wall of the scraper table (41), and the fan (493) is fixedly connected to the rotating shaft (491). One bevel gear set (492) is connected between the shaft (414) and the rotating shaft (491), and the other bevel gear set (492) is connected between the shaft (414) and the vertical rotating rod (44).

8. The apparatus for preparing thermally conductive composite tape according to claim 1, characterized in that, The top of the glue scraping table (41) is detachably connected to a pressing plate (47).

9. A thermally conductive composite tape manufactured using claim 1, characterized in that, The thermally conductive composite tape body (7) includes a substrate (71), a modified acrylic adhesive layer (72), and an outer protective layer (73). The substrate (71) is disposed between two modified acrylic adhesive layers (72), and the outer protective layer (73) covers the outer layer of the modified acrylic adhesive layer (72).

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