A gluing and drying integrated device for adhesive tape production

Abstract

This invention discloses an integrated adhesive coating and drying device for tape production, relating to the technical field of tape production equipment. It includes a frame, an unwinding mechanism, an adhesive coating mechanism, a drying mechanism, and a rewinding mechanism. The drying mechanism is located downstream of the adhesive coating mechanism and includes multiple hot air systems, multiple drying channels, and multiple direction conversion components. The direction conversion components contact the adhesive backing surface of the substrate and can change the transmission direction of the substrate. The drying channels are connected in series, and the direction conversion components between adjacent drying channels enable the substrate to be redirected for transmission, thereby extending the drying path of the drying mechanism. The hot air systems are connected to their respective drying channels and are used to deliver hot air into the drying channels to dry the coated substrate. Each hot air system can provide an appropriate drying temperature according to the drying progress of the tape within the drying channel. This invention effectively reduces the equipment's footprint, effectively improves work efficiency, and effectively improves drying quality.

Description

Technical Field

[0001] This invention relates to the field of adhesive tape production equipment technology, and in particular to an integrated adhesive coating and drying device for adhesive tape production. Background Technology

[0002] In the tape production process, coating and drying are two crucial core steps that directly determine the tape's bonding performance, appearance quality, and production efficiency. In traditional production processes, the coating and drying processes are independent. The specific operation is as follows: first, adhesive is evenly coated onto the surface of substrates such as BOPP film, cloth, and paper on a dedicated coating machine; then, the semi-finished roll coated with adhesive is wound up and transferred manually or via conveyor equipment to a separate drying device or oven for drying. This separate production method has many drawbacks: First, the production process is not continuous, and the adhesive surface is easily scratched and contaminated during transfer, affecting the tape's appearance and bonding effect; second, manual transfer increases labor costs and has low efficiency, failing to meet the demands of high-speed production; third, the coating and drying equipment are placed independently, occupying a large area and requiring significant factory space; fourth, poor coordination between the drying and coating equipment can easily lead to adhesive leakage and accumulation during transfer, further affecting product quality, and the independent operation of these devices consumes more energy, increasing production costs.

[0003] To address the aforementioned transfer issues, existing technologies have developed continuous linear drying equipment that integrates the adhesive application and drying processes, enabling continuous conveying and drying of the substrate. However, this type of equipment still suffers from several insurmountable drawbacks: First, the drying path and equipment length are in a 1:1 ratio, resulting in an excessively large footprint. To meet the drying requirements of high-speed production lines or thicker adhesive coatings, a sufficiently long space is needed to install the equipment and ensure complete solvent evaporation, often leading to equipment lengths of 20 to 30 meters. This places stringent demands on the width and length of factory space, making it difficult for many small and medium-sized enterprises to adapt. Second, the use of a single constant-temperature drying mode presents a dilemma in temperature control: if the drying path is shortened by increasing the drying temperature, the adhesive surface will rapidly solidify, forming a hard shell that hinders further solvent evaporation, easily causing quality defects such as bubbles, pinholes, and cracks in the adhesive layer, severely affecting the bonding strength and smoothness of the tape. If the temperature is not increased, the drying path must be extended to ensure the drying effect, leading to increased drying time, which cannot match the pace of high-speed production, significantly reducing production efficiency and failing to meet the needs of large-scale production. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated adhesive coating and drying device for tape production, so as to solve the problems existing in the prior art, effectively reduce the equipment footprint, effectively improve work efficiency, and effectively improve drying quality.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides an integrated adhesive coating and drying device for tape production, comprising: a frame, an unwinding mechanism, an adhesive coating mechanism, a drying mechanism, and a rewinding mechanism. The unwinding mechanism is disposed within the frame and is used to release a roll of substrate to be coated with adhesive. The adhesive coating mechanism is disposed within the frame and downstream of the unwinding mechanism, and is used to apply adhesive to the surface of the substrate. The drying mechanism is disposed within the frame and downstream of the adhesive coating mechanism, and includes multiple hot air systems, multiple drying channels, and multiple direction conversion components. The direction conversion components contact the adhesive backing surface of the substrate and are capable of changing the direction of the adhesive backing surface. The material is transported in a specific direction, and the drying channels are connected in series. Adjacent drying channels are connected by a direction conversion component to change the direction of the substrate transport, thereby extending the drying path of the drying mechanism. The hot air system is connected to the corresponding drying channel and is used to deliver hot air into the drying channel to dry the coated substrate. Each hot air system can provide an appropriate drying temperature according to the drying process of the tape in the drying channel. The winding mechanism is installed on one side of the frame and is located downstream of the drying mechanism for winding the finished tape.

[0006] Preferably, the plurality of drying channels include a first drying channel, a second drying channel, and a third drying channel arranged in a vertical stack and connected in series. The plurality of direction conversion components include a first direction conversion roller, a second direction conversion roller, a third direction conversion roller, a fourth direction conversion roller, and a fifth direction conversion roller. The first drying channel is located downstream of the coating mechanism. The first direction conversion roller is located at the end of the first drying channel, and the second direction conversion roller is located at the beginning of the second drying channel to turn the substrate in the first drying channel into the second drying channel. The third direction conversion roller is located at the end of the second drying channel, and the fourth direction conversion roller is located at the beginning of the third drying channel to turn the substrate in the second drying channel into the third drying channel. The transmission path from the third direction conversion roller to the fourth direction conversion roller is located on the side of the unwinding mechanism away from the first drying channel. The fifth direction conversion roller is located at the end of the third drying channel and is used to guide the dried substrate to the winding mechanism.

[0007] Preferably, the hot air system forms a first drying zone with a first heating temperature in the first drying channel, a second drying zone with a second heating temperature in the second drying channel, and a third drying zone with a third heating temperature in the third drying channel. The first heating temperature is 50℃~70℃, the second heating temperature is 80℃~120℃, and the third heating temperature is 30℃~50℃, so that the first drying zone, the second drying zone, and the third drying zone connected in series form a gradient drying curve with the temperature first rising and then falling.

[0008] Preferably, the surfaces of the first direction conversion roller, the second direction conversion roller, the third direction conversion roller, the fourth direction conversion roller, and the fifth direction conversion roller are provided with a Teflon coating or a ceramic coating.

[0009] Preferably, the first direction conversion roller, the second direction conversion roller, the third direction conversion roller, the fourth direction conversion roller, and the fifth direction conversion roller are all connected to independent drive motors, and the linear speed of the drive motors is the same as the transmission speed of the substrate.

[0010] Preferably, the hot air system includes a heating fan, an air inlet duct, an air outlet duct, and a temperature sensor. The air outlet of the heating fan is connected to the air inlet of the drying channel through the air inlet duct. One end of the air outlet duct is connected to the air outlet of the drying channel, and the other end extends to the air inlet of the heating fan. The temperature sensor is installed inside the drying channel to monitor the temperature inside the channel in real time and feeds the temperature signal back to the control system of the heating fan. The control system adjusts the heating power of the heating fan according to the feedback signal so that the temperature inside the corresponding drying channel is within a set range.

[0011] Preferably, it also includes a fresh air duct, a control valve, and an exhaust gas purifier. One end of the fresh air duct is connected to the external environment, and the other end is connected to the air inlet of the heating fan. The control valve is used to adjust the opening degree of the fresh air duct. An air filter is also installed on the fresh air duct to filter impurities and dust in the incoming fresh air. The exhaust gas purifier is installed on the air outlet duct to purify the volatile organic waste gas generated during the drying process.

[0012] Preferably, the glue coating mechanism includes a glue tank, a glue coating roller, and a metering roller. The glue tank is located directly above the glue coating roller, and the bottom of the glue tank has a glue outlet extending along the axial direction of the glue coating roller. A gap is left between the outer surface of the glue coating roller and the glue outlet. The glue in the glue tank automatically flows to the surface of the glue coating roller under the action of gravity. The lower part of the glue coating roller contacts the substrate to transfer the glue to the surface of the substrate. The metering roller is arranged adjacent to and parallel to the glue coating roller, and the substrate passes through the gap between the metering roller and the glue coating roller.

[0013] Preferably, the unwinding mechanism includes an unwinding shaft, a magnetic powder brake, and a tension sensor. The unwinding shaft is used to mount the substrate roll. The magnetic powder brake is connected to the unwinding shaft and is used to provide unwinding resistance to maintain constant tension of the substrate. The tension sensor is located on the substrate transmission path between the unwinding mechanism and the coating mechanism and is used to monitor the tension value of the substrate in real time and feed the signal back to the controller of the magnetic powder brake. The controller of the magnetic powder brake adjusts the braking torque of the magnetic powder brake according to the feedback signal.

[0014] Preferably, the winding mechanism includes a connecting frame, a winding shaft, and a drive motor. The connecting frame is fixedly connected to one side of the frame. The winding shaft is rotatably mounted on the connecting frame. The drive motor is mounted on the connecting frame. The output shaft of the drive motor is connected to one end of the winding shaft via a coupling to drive the winding shaft to rotate and achieve the winding of the finished tape.

[0015] The present invention achieves the following technical effects compared to the prior art: This invention provides an integrated coating and drying device for tape production. By integrating an unwinding mechanism, a coating mechanism, a drying mechanism, and a winding mechanism within a frame, it achieves fully automated continuous operation of the substrate from unwinding, coating, drying to winding. This effectively avoids problems such as scratches on the adhesive surface, contamination, and adhesive flow and accumulation caused by transfer in traditional separate production, and significantly improves product quality.

[0016] Furthermore, the drying mechanism adopts a design that uses multiple drying channels connected in series and uses a direction conversion component to achieve substrate turning and transmission. In particular, the multiple drying channels are stacked in the vertical direction, which greatly reduces the space occupied by the equipment in the horizontal direction and solves the problem of excessive floor space of continuous linear drying equipment, making the equipment more adaptable to the actual situation of limited factory space in small and medium-sized enterprises.

[0017] Furthermore, each drying channel is equipped with an independent hot air system, which can provide an appropriate drying temperature according to the drying process, forming a gradient drying curve with the temperature rising first and then falling. This avoids the problem of surface curing and crusting of the adhesive layer caused by a single high temperature, and ensures that the solvent can fully evaporate within a shorter drying path, effectively improving drying quality and production efficiency.

[0018] This invention achieves significant progress in reducing floor space, improving work efficiency, and enhancing drying quality through a combination of structural optimization and intelligent control, demonstrating strong practical value and promising prospects for widespread application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in 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.

[0020] Figure 1 A schematic diagram of the integrated adhesive coating and drying device for tape production provided by the present invention; Figure 2 A cross-sectional view of the integrated adhesive coating and drying apparatus for tape production provided by the present invention; Figure 3 A side view of the integrated adhesive coating and drying apparatus for tape production provided by the present invention; Figure 4 for Figure 3 Sectional view at point AA; In the diagram: 1. Frame; 2. Unwinding mechanism; 3. Glue coating mechanism; 4. Drying mechanism; 401. First drying channel; 402. Second drying channel; 403. Third drying channel; 404. First direction conversion roller; 405. Second direction conversion roller; 406. Third direction conversion roller; 407. Fourth direction conversion roller; 408. Fifth direction conversion roller; 409. Heating fan; 410. Air inlet duct; 411. Air outlet duct; 412. Temperature sensor; 413. Fresh air duct; 414. Exhaust gas purifier; 5. Rewinding mechanism; 6. Adhesive tape. Detailed Implementation

[0021] 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.

[0022] The purpose of this invention is to provide an integrated adhesive coating and drying device for tape production, so as to solve the problems existing in the prior art, effectively reduce the equipment footprint, effectively improve work efficiency, and effectively improve drying quality.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] This invention provides an integrated adhesive coating and drying device for tape production, such as... Figures 1-4As shown, the system includes: a frame 1, an unwinding mechanism 2, an adhesive coating mechanism 3, a drying mechanism 4, and a rewinding mechanism 5. The unwinding mechanism 2 is located within the frame 1 and is used to release the substrate roll to be coated with adhesive. The adhesive coating mechanism 3 is located within the frame 1 and downstream of the unwinding mechanism 2, and is used to apply adhesive to the surface of the substrate. The drying mechanism 4 is located within the frame 1 and downstream of the adhesive coating mechanism 3. The drying mechanism 4 includes multiple hot air systems, multiple drying channels, and multiple direction conversion components. The direction conversion components contact the adhesive backing surface of the substrate and can change the transport direction of the substrate. The drying channels are arranged in series. The drying channels are connected by a direction converter to redirect and transfer the substrate, thus extending the drying path of the drying mechanism 4. Hot air systems are connected to the corresponding drying channels to deliver hot air into them for drying the coated substrate. Each hot air system can provide an appropriate drying temperature based on the drying progress of the tape 6 within the drying channel. The winding mechanism 5 is installed on one side of the frame 1 and downstream of the drying mechanism 4, used to wind up the finished tape 6. This overall structural design achieves integrated operation of unwinding, coating, drying, and winding in tape 6 production, improving production efficiency. By setting up multiple drying channels, direction converters, and an adjustable temperature hot air system, extending the drying path, and providing appropriate temperatures according to the drying progress, the drying effect and tape 6 quality are improved.

[0025] In a preferred embodiment, the multiple drying channels include a first drying channel 401, a second drying channel 402, and a third drying channel 403 arranged vertically and connected in series. Multiple direction conversion components include a first direction conversion roller 404, a second direction conversion roller 405, a third direction conversion roller 406, a fourth direction conversion roller 407, and a fifth direction conversion roller 408. The first drying channel 401 is located downstream of the coating mechanism 3, the first direction conversion roller 404 is located at the end of the first drying channel 401, and the second direction conversion roller 405 is located at the beginning of the second drying channel 402, so as to convert the adhesive in the first drying channel 401... The substrate is redirected and introduced into the second drying channel 402; a third direction conversion roller 406 is located at the end of the second drying channel 402, and a fourth direction conversion roller 407 is located at the beginning of the third drying channel 403, to redirect the substrate from the second drying channel 402 into the third drying channel 403. The transmission path from the third direction conversion roller 406 to the fourth direction conversion roller 407 is located on the side of the unwinding mechanism 2 away from the first drying channel 401; a fifth direction conversion roller 408 is located at the end of the third drying channel 403, used to guide the dried substrate to the winding mechanism 5. The drying channels are arranged vertically in a stacked manner, effectively utilizing space and making the equipment structure more compact. By using multiple direction conversion rollers to achieve the redirection and transmission of the substrate between different drying channels, the drying path is extended, allowing the tape 6 to be fully dried in a limited space, improving drying efficiency and uniformity.

[0026] In a preferred embodiment, the drying channel can be a spiral path surrounding the unwinding mechanism 2 and the coating mechanism 3. By designing the drying path as a spirally expanding structure, the drying paths can be superimposed in the height direction of the equipment, further reducing the flat floor area of ​​the equipment. At the same time, it ensures that the substrate maintains stable tension and transmission speed during spiral transmission, avoiding substrate wrinkles or stretching deformation caused by complex paths.

[0027] In a preferred embodiment, the hot air system forms a first drying zone with a first heating temperature in the first drying channel 401, a second drying zone with a second heating temperature in the second drying channel 402, and a third drying zone with a third heating temperature in the third drying channel 403. The first heating temperature is 50℃~70℃, the second heating temperature is 80℃~120℃, and the third heating temperature is 30℃~50℃. This creates a gradient drying curve where the first, second, and third drying zones, connected in series, first rise and then fall in temperature. The gradient drying curve design conforms to the physical characteristics of drying tape 6. At 50-70℃, the low-boiling-point solvent (such as ethyl acetate, boiling point 77℃) in the adhesive layer begins to evaporate gently and uniformly. This temperature is lower than the temperature at which the solvent boils violently, preventing the adhesive layer surface from rapidly solidifying into a dense hard shell due to instantaneous high temperature, thus maintaining the unobstructed micropores within the adhesive layer. Furthermore, the substrates such as BOPP and PET are gently preheated from room temperature to 50-70℃, eliminating internal moisture and stress, allowing them to enter the high-temperature zone in a stable state and preventing drastic shrinkage or curling caused by excessive temperature differences. Upon entering the 80-120℃ range, all solvents in the adhesive layer (including high-boiling-point toluene, 110℃) reach or exceed their boiling points, beginning to evaporate rapidly and violently. For adhesive layers with a thickness of 20-50μm, at 120℃, the solvent residue can be reduced to below 0.1% (the national standard acceptable level) in just a few seconds, which is crucial for achieving high-speed production. After high-temperature baking at 80-120℃, significant thermal shrinkage stress accumulates inside the substrate (especially BOPP film). Immediately entering the 30-50℃ cooling zone causes the substrate molecular chains to freeze and return to their original positions, effectively releasing the thermal stress. This directly avoids problems such as warping, edge curling, and uneven end faces in the rolls of adhesive tape after winding. The surface temperature of the adhesive layer is rapidly reduced from 120℃ to below 50℃, causing it to lose its viscous flowability. This prevents adjacent adhesive layers from sticking together or overflowing due to high temperature and pressure during winding, ensuring that the finished roll material can be unwound and used smoothly.

[0028] In a preferred embodiment, the surfaces of the first direction conversion roller 404, the second direction conversion roller 405, the third direction conversion roller 406, the fourth direction conversion roller 407, and the fifth direction conversion roller 408 are provided with a Teflon coating or a ceramic coating. The Teflon coating or ceramic coating has a low coefficient of friction and good chemical stability, which can reduce friction with the adhesive backing surface, prevent the adhesive from adhering to the roller surface, ensure the smooth transmission of the substrate, and avoid surface damage and quality problems of the tape 6 caused by friction and adhesion.

[0029] In a preferred embodiment, the first direction conversion roller 404, the second direction conversion roller 405, the third direction conversion roller 406, the fourth direction conversion roller 407, and the fifth direction conversion roller 408 are all connected to independent drive motors. The linear speed of the drive motors is the same as the transmission speed of the substrate. The independent drive motors can precisely control the rotation speed of each direction conversion roller, making its linear speed consistent with the transmission speed of the substrate. This ensures that the substrate remains stable during the turning and transmission process, avoiding problems such as wrinkles and uneven stretching, and ensuring the flatness and quality of the tape 6. At the same time, by setting the first direction conversion roller 404, the second direction conversion roller 405, the third direction conversion roller 406, the fourth direction conversion roller 407, and the fifth direction conversion roller 408, the adhesive surface of the tape 6 can always face the inside of the drying channel during the drying process, avoiding contact with the direction conversion rollers and the transmission guide rollers, which would cause damage or contamination to the adhesive surface. This design ensures that the adhesive surface is fully exposed to hot air during the drying process, while the direction-changing roller supports the backing adhesive surface, maintaining stable transmission of the substrate and further improving the uniformity of drying and the surface quality of the tape 6.

[0030] In a preferred embodiment, the hot air system includes a heating fan 409, an air inlet duct 410, an air outlet duct 411, and a temperature sensor 412. The air outlet of the heating fan 409 is connected to the air inlet of the drying channel via the air inlet duct 410. One end of the air outlet duct 411 is connected to the air outlet of the drying channel, and the other end extends to the air inlet of the heating fan 409. The temperature sensor 412 is installed inside the drying channel to monitor the temperature inside the channel in real time and feeds the temperature signal back to the control system of the heating fan 409. The control system adjusts the heating power of the heating fan 409 according to the feedback signal to keep the temperature in the corresponding drying channel within a set range. This design achieves real-time monitoring and precise control of the temperature inside the drying channel. Through the feedback information from the temperature sensor 412, the control system of the heating fan 409 can adjust the heating power in a timely manner to ensure that the temperature in each drying channel is stable within the set range, thereby ensuring the consistency and stability of the drying effect and improving product quality.

[0031] In a preferred embodiment, the system further includes a fresh air duct 413, a control valve, and an exhaust gas purifier 414. One end of the fresh air duct 413 is connected to the external environment, and the other end is connected to the air inlet of the heating fan 409. The control valve is used to adjust the opening degree of the fresh air duct 413. An air filter is also installed on the fresh air duct 413 to filter impurities and dust in the incoming fresh air. The exhaust gas purifier 414 is installed on the outlet duct 411 to purify the volatile organic waste gas generated during the drying process. The fresh air duct 413 and the control valve can adjust the amount of fresh air entering the heating fan 409, which helps to maintain the freshness and dryness of the air in the drying channel. The air filter filters impurities and dust, preventing them from contaminating the tape 6. The exhaust gas purifier 414 purifies the volatile organic waste gas, meeting environmental protection requirements and reducing environmental pollution.

[0032] In a preferred embodiment, the glue coating mechanism 3 includes a glue tank, a glue coating roller, and a metering roller. The glue tank is positioned directly above the glue coating roller, and its bottom has a glue outlet extending axially along the glue coating roller. A gap exists between the outer surface of the glue coating roller and the glue outlet. The glue in the glue tank flows automatically to the surface of the glue coating roller under gravity. The lower part of the glue coating roller contacts the substrate, transferring the glue to the substrate surface. The metering roller is arranged parallel to the glue coating roller, allowing the substrate to pass through the gap between them. This glue coating mechanism 3 utilizes gravity for glue supply, resulting in a simple structure and stable glue supply. The cooperation between the metering roller and the glue coating roller enables precise control of the glue application amount, ensuring the uniformity of the glue application on the tape 6 and thus improving the quality of the tape 6.

[0033] In a preferred embodiment, the unwinding mechanism 2 includes an unwinding shaft, a magnetic powder brake, and a tension sensor. The unwinding shaft is used to mount the substrate roll. The magnetic powder brake is connected to the unwinding shaft and provides unwinding resistance to maintain constant tension of the substrate. The tension sensor is located on the substrate transmission path between the unwinding mechanism 2 and the coating mechanism 3. It is used to monitor the tension value of the substrate in real time and feed the signal back to the controller of the magnetic powder brake. The controller of the magnetic powder brake adjusts the braking torque of the magnetic powder brake according to the feedback signal. The unwinding mechanism 2 monitors the substrate tension in real time through the tension sensor, and the magnetic powder brake adjusts the braking torque according to the feedback signal to maintain constant tension of the substrate during the unwinding process. This prevents the substrate from wrinkling, stretching deformation, or other problems caused by uneven tension, ensuring the smooth progress of subsequent coating and drying processes and improving product quality.

[0034] In a preferred embodiment, the winding mechanism 5 includes a connecting frame, a winding shaft, and a drive motor. The connecting frame is fixedly connected to one side of the frame 1, the winding shaft is rotatably mounted on the connecting frame, and the drive motor is mounted on the connecting frame. The output shaft of the drive motor is connected to one end of the winding shaft via a coupling to drive the winding shaft to rotate and achieve the winding of the finished tape 6. This winding mechanism 5 has a simple structure, and the drive motor drives the winding shaft to rotate via the coupling, which can stably achieve the winding operation of the finished tape 6, ensure the smooth progress of the winding process, and guarantee the continuity of the entire production process.

[0035] Example 2 This embodiment provides a method for using the integrated adhesive coating and drying device for tape production as described in Embodiment 1: 1. Preparation stage: Install the substrate roll: Install the substrate roll to be coated onto the unwinding shaft of the unwinding mechanism 2.

[0036] Equipment inspection: Confirm that all components are securely installed, and that all sensors, controllers and other equipment are operating normally. Check whether the hot air system, exhaust gas purifier 414 and other functions are normal, and whether the fresh air duct 413, control valve and air filter are working properly.

[0037] Add adhesive: Add an appropriate amount of adhesive to the adhesive tank of the adhesive applicator 3.

[0038] 2. Unwinding stage: Start unwinding mechanism 2: When unwinding mechanism 2 is activated, the magnetic powder brake begins to operate, providing unwinding resistance to the unwinding shaft. Simultaneously, the tension sensor monitors the tension value of the substrate in real time and feeds the signal back to the controller of the magnetic powder brake.

[0039] Adjusting the unwinding tension: The controller of the magnetic powder brake automatically adjusts the braking torque of the magnetic powder brake according to the feedback signal to ensure that the substrate maintains a constant tension during the unwinding process and is smoothly transmitted to the coating mechanism 3.

[0040] 3. Adhesive application stage: Adhesive transfer: Under the influence of gravity, the adhesive in the adhesive tank flows automatically from the outlet extending axially along the coating roller from the bottom of the tank to the surface of the coating roller. The lower part of the coating roller contacts the substrate, transferring the adhesive to the substrate surface.

[0041] Controlling the amount of adhesive applied: The substrate passes through the gap between the metering roller and the adhesive roller. The metering roller and the adhesive roller work together to precisely control the amount of adhesive applied, ensuring that the adhesive is applied evenly to the surface of the substrate.

[0042] 4. Drying stage: Entering the first drying channel 401: The substrate after applying the adhesive enters the first drying channel 401. The hot air system delivers hot air at a temperature of 50℃-70℃ into the first drying channel 401 to preheat and dry the substrate, initially removing some of the moisture and solvent from the adhesive.

[0043] Turning to the second drying channel 402: At the end of the first drying channel 401, the first direction conversion roller 404 changes the transport direction of the substrate and introduces it into the second drying channel 402. The second direction conversion roller 405 is located at the beginning of the second drying channel 402 to ensure smooth entry of the substrate.

[0044] Second stage drying: In the second drying channel 402, the hot air system provides hot air at 80℃-120℃ to accelerate the drying process of the adhesive and further solidify the adhesive.

[0045] Turning to the third drying channel 403: The substrate is turned from the end of the second drying channel 402 via the third direction conversion roller 406, and transferred to the fourth direction conversion roller 407, entering the third drying channel 403. This transmission path is located on the side of the unwinding mechanism 2 away from the first drying channel 401, and the reasonable use of space can avoid contact between the conveyor roller and the adhesive surface of the tape 6.

[0046] Final drying and cooling: In the third drying channel 403, the hot air system provides hot air at 30℃-50℃ to perform final drying and cooling treatment on the tape 6, so that the tape 6 reaches the ideal dry state and stable temperature, thereby improving the quality of the tape 6.

[0047] Drying temperature regulation: During the drying process, the temperature sensor 412 in each drying channel monitors the temperature in the channel in real time and feeds the signal back to the control system of the heating fan 409 of the hot air system. The control system adjusts the heating power of the heating fan 409 according to the feedback signal to ensure that the temperature in each drying channel is always within the set range.

[0048] 5. Roll-up stage: Guided winding: The dried substrate is guided by the fifth direction conversion roller 408 and transferred to the winding mechanism 5.

[0049] Start the winding mechanism 5: The drive motor of the winding mechanism 5 drives the winding shaft to rotate through the coupling, and winds up the finished tape 6.

[0050] 6. Environmental protection measures: Fresh air introduction: Fresh air duct 413 introduces fresh outside air into the air inlet of the heating fan 409. The control valve adjusts the opening degree of the fresh air duct 413 to control the fresh air volume. Air filter filters impurities and dust in the fresh air to ensure that the air entering the drying channel is clean.

[0051] Waste gas purification: The volatile organic waste gas generated during the drying process enters the waste gas purifier 414 through the exhaust duct 411 for purification treatment, and is discharged after meeting the standards, reducing pollution to the environment.

[0052] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An integrated adhesive coating and drying device for tape production, characterized in that: include: frame; An unwinding mechanism, which is disposed within the frame, is used to release the substrate roll to be coated with adhesive; An adhesive coating mechanism, which is located within the frame and downstream of the unwinding mechanism, is used to apply adhesive to the surface of the substrate. A drying mechanism is disposed within a frame and downstream of the adhesive coating mechanism. The drying mechanism includes multiple hot air systems, multiple drying channels, and multiple direction conversion components. The direction conversion components contact the adhesive backing surface of the substrate and can change the transmission direction of the substrate. The drying channels are arranged in series. Adjacent drying channels are connected by the direction conversion components to achieve the reversal of substrate transmission, thereby extending the drying path of the drying mechanism. The hot air systems are respectively connected to the corresponding drying channels and are used to deliver hot air into the drying channels to dry the adhesive-coated substrate. Each hot air system can provide an appropriate drying temperature according to the drying progress of the tape in the drying channel. A winding mechanism is installed on one side of the frame and located downstream of the drying mechanism for winding up the finished tape.

2. The integrated adhesive coating and drying device for tape production according to claim 1, characterized in that: The plurality of drying channels include a first drying channel, a second drying channel, and a third drying channel arranged in a vertical stack and connected in series. The plurality of direction conversion components include a first direction conversion roller, a second direction conversion roller, a third direction conversion roller, a fourth direction conversion roller, and a fifth direction conversion roller. The first drying channel is located downstream of the adhesive coating mechanism. The first direction conversion roller is located at the end of the first drying channel. The second direction conversion roller is located at the beginning of the second drying channel to turn the substrate of the first drying channel into the second drying channel. The third direction conversion roller is located at the end of the second drying channel, and the fourth direction conversion roller is located at the beginning of the third drying channel to turn the substrate of the second drying channel into the third drying channel. The transmission path from the third direction conversion roller to the fourth direction conversion roller is located on the side of the unwinding mechanism away from the first drying channel. The fifth direction conversion roller is located at the end of the third drying channel to guide the dried substrate to the winding mechanism.

3. The integrated adhesive coating and drying device for tape production according to claim 2, characterized in that: The hot air system forms a first drying zone with a first heating temperature in the first drying channel, a second drying zone with a second heating temperature in the second drying channel, and a third drying zone with a third heating temperature in the third drying channel. The first heating temperature is 50℃~70℃, the second heating temperature is 80℃~120℃, and the third heating temperature is 30℃~50℃, so that the first drying zone, the second drying zone, and the third drying zone connected in series form a gradient drying curve with the temperature first rising and then falling.

4. The integrated adhesive coating and drying device for tape production according to claim 3, characterized in that: The surfaces of the first direction conversion roller, the second direction conversion roller, the third direction conversion roller, the fourth direction conversion roller, and the fifth direction conversion roller are provided with a Teflon coating or a ceramic coating.

5. The integrated adhesive coating and drying device for tape production according to claim 4, characterized in that: The first direction conversion roller, the second direction conversion roller, the third direction conversion roller, the fourth direction conversion roller, and the fifth direction conversion roller are all connected to independent drive motors, and the linear speed of the drive motors is the same as the transmission speed of the substrate.

6. The integrated adhesive coating and drying device for tape production according to claim 1, characterized in that: The hot air system includes a heating fan, an air inlet duct, an air outlet duct, and a temperature sensor. The air outlet of the heating fan is connected to the air inlet of the drying channel through the air inlet duct. One end of the air outlet duct is connected to the air outlet of the drying channel, and the other end extends to the air inlet of the heating fan. The temperature sensor is installed inside the drying channel to monitor the temperature inside the channel in real time and feeds the temperature signal back to the control system of the heating fan. The control system adjusts the heating power of the heating fan according to the feedback signal so that the temperature inside the corresponding drying channel is within a set range.

7. The integrated adhesive coating and drying device for tape production according to claim 6, characterized in that: It also includes a fresh air duct, a control valve, and an exhaust gas purifier. One end of the fresh air duct is connected to the external environment, and the other end is connected to the air inlet of the heating fan. The control valve is used to adjust the opening degree of the fresh air duct. An air filter is also installed on the fresh air duct to filter impurities and dust in the incoming fresh air. The exhaust gas purifier is installed on the air outlet duct to purify the volatile organic waste gas generated during the drying process.

8. The integrated adhesive coating and drying device for tape production according to claim 1, characterized in that: The glue coating mechanism includes a glue tank, a glue coating roller, and a metering roller. The glue tank is located directly above the glue coating roller. The bottom of the glue tank has a glue outlet extending along the axial direction of the glue coating roller. A gap is left between the outer surface of the glue coating roller and the glue outlet. The glue in the glue tank automatically flows to the surface of the glue coating roller under the action of gravity. The lower part of the glue coating roller contacts the substrate to transfer the glue to the surface of the substrate. The metering roller is arranged adjacent to and parallel to the glue coating roller, and the substrate passes through the gap between the metering roller and the glue coating roller.

9. The integrated adhesive coating and drying device for tape production according to claim 1, characterized in that: The unwinding mechanism includes an unwinding shaft, a magnetic powder brake, and a tension sensor. The unwinding shaft is used to mount the substrate roll. The magnetic powder brake is connected to the unwinding shaft and is used to provide unwinding resistance to maintain constant tension of the substrate. The tension sensor is set on the substrate transmission path between the unwinding mechanism and the coating mechanism and is used to monitor the tension value of the substrate in real time and feed the signal back to the controller of the magnetic powder brake. The controller of the magnetic powder brake adjusts the braking torque of the magnetic powder brake according to the feedback signal.

10. The integrated adhesive coating and drying device for tape production according to claim 1, characterized in that: The winding mechanism includes a connecting frame, a winding shaft, and a drive motor. The connecting frame is fixedly connected to one side of the frame. The winding shaft is rotatably mounted on the connecting frame. The drive motor is mounted on the connecting frame. The output shaft of the drive motor is connected to one end of the winding shaft via a coupling to drive the winding shaft to rotate and achieve the winding of the finished tape.

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