A kind of adhesive tape hot sensitive adhesive tape pasting disc roll production line

Abstract

The application discloses a kind of hot sensitive adhesive tape pasting disc roll production lines, it is related to the technical field of automobile sealing strip manufacturing and automatic production equipment. In existing production, related process is mostly completed by decentralized or semi-automatic equipment, generally only includes basic processes such as feeding, polishing and hot sensitive adhesive tape pasting, and the connection between each process is not close, and the overall automation level is low. The application integrates multiple originally dispersed processing units, and through the cooperation of storage buffer, online detection, automatic cutting, automatic docking, continuous connection of release paper and automatic disc rolling, not only improves the production efficiency, but also significantly enhances the continuity, stability and controllability of the production process.

Description

Technical Field

[0001] This invention relates to the field of automotive sealing strip manufacturing and automated production equipment technology, specifically a production line for bonding and rolling thermal adhesive tape. Background Technology

[0002] During the production of automotive sealing strips, heat-sensitive adhesive tape is typically applied to their surface to meet the requirements of subsequent assembly and sealing performance. Currently, these processes are mostly completed using decentralized or semi-automatic equipment, generally only including basic steps such as material feeding, grinding, and heat-sensitive tape application. The connections between these steps are not tight, resulting in a low overall level of automation.

[0003] Currently, the feeding and end-connection of adhesive strips largely rely on manual operation, using glue for joining. This not only results in uneven joints but also unstable connection strength, impacting production cycle time. Furthermore, the application of thermal tape often lacks effective monitoring of temperature, airflow, and tape tension, leading to fluctuations in bonding performance between different batches and making it difficult to guarantee consistency.

[0004] Regarding production continuity, the lack of an effective material storage and buffer structure means that the entire production line must be shut down when jointing or tape replacement is required, making continuous operation impossible and significantly limiting production efficiency. In quality control, many scenarios still rely on manual defect assessment, which is not only labor-intensive but also prone to missed or misjudged defects, and defective sections are difficult to remove promptly and accurately.

[0005] Meanwhile, after the adhesive strips are cut, it is difficult to achieve automatic reconnection in the existing process, especially since the release paper of the thermal tape cannot be kept continuous, resulting in the product often being output in single segments, which is not conducive to subsequent assembly or use. The material receiving process still mostly uses manual coiling, which is not only inefficient, but also the coiling quality is greatly affected by human factors and lacks stability.

[0006] Based on the above, it is necessary to improve the existing production method to enable continuous connection between each process and improve automation and production efficiency while ensuring product quality. Therefore, a production line for bonding and rolling thermal adhesive tape is needed. Summary of the Invention

[0007] The main objective of this invention is to provide a production line for bonding and rolling thermal adhesive tape, which can effectively solve the problems in the background art.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A production line for bonding thermal adhesive tape to coils, characterized by the following specific steps: S1. Feeding and connection at the beginning: The rubber strip is unwound and conveyed by an automatic unwinding feeding device, and the end of the rubber strip is connected by a front-end PE docking device. S2, Front-end material storage and buffer: The first material storage device stores the rubber strip to ensure the continuous operation of subsequent processes when the front end is connected; S3. Surface treatment: The surface of the rubber strip is polished and cleaned by a polishing and cleaning device; S4. Heat-sensitive tape application: The heat-sensitive tape is heated by the heat-sensitive tape application device and continuously applied to the surface of the tape. S5. Cooling and Shaping: The adhesive strip is rapidly cooled after the heat-sensitive tape has been applied using a cooling device; S6, Post-processing material storage and buffer: The pasted adhesive strips are stored through a second material storage device to adapt to changes in the cycle time of subsequent processes; S7. Defect handling and back-end connection: The defect of the rubber strip is detected by the defect detection and cutting device and the defective section is cut off and removed. Then, the cut rubber strip is reconnected by the back-end PE docking device. S8. Release paper connection and marking: The release paper of the thermal tape is connected by a peeling and hot-pressing device, and the connection position is marked by a coding device; S9. Traction and Coiling: The rubber strip is stably conveyed by the traction device and continuously wound up by the automatic coiling device.

[0009] Preferably, in step S4, the thermal tape bonding device includes a hot air heating unit and an infrared heating unit. The hot air heating unit is used to locally heat the area where the adhesive strip and the thermal tape are bonded, and the infrared heating unit is used to preheat the surface of the adhesive strip.

[0010] Preferably, in step S4, the thermal tape application device is equipped with a temperature detection unit, an airflow monitoring unit, and a tension control unit to monitor and adjust the temperature, airflow, and tape tension during the thermal tape application process.

[0011] Preferably, in steps S2 and S6, both the first and second storage devices adopt a floating storage structure and use sensors to detect the storage amount in order to achieve automatic switching between storage release and storage recovery.

[0012] Preferably, in step S7, the defect detection and cutting device identifies adhesive strip defects or tape offsets through a visual detection unit or a sensor detection unit, and outputs a control signal to drive the cutting mechanism to cut off the defective segment.

[0013] Preferably, in step S7, the cut adhesive strips are reconnected using a PE film to restore the continuous conveying state of the adhesive strips.

[0014] Preferably, in step S9, the automatic winding device includes a receiving mechanism and a transverse winding mechanism. The transverse winding mechanism is used to control the reciprocating movement and arrangement of the adhesive strip on the barrel to achieve uniform winding of the adhesive strip.

[0015] Preferably, the device is characterized by comprising, in sequence along the production direction, an automatic unwinding and feeding device, a first storage device, a grinding and cleaning device, a thermal tape pasting device, a cooling device, a second storage device, a defect detection and cutting device, a rear PE joining device, a peeling and heat-bonding device, a coding device, a traction device, and an automatic winding device, and a front PE joining device is also provided in front of the automatic unwinding and feeding device; the thermal tape pasting device is used to heat the adhesive strip and complete the continuous bonding of the thermal tape; the defect detection and cutting device is used to detect and cut defective sections; the peeling and heat-bonding device is used to connect the release paper; and the automatic winding device is used to continuously wind the finished adhesive strip. All devices are linked through a control system to achieve continuous pasting and continuous winding production of the adhesive strip.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By integrating multiple previously dispersed processing units into a single system and employing technologies such as material buffering, online detection, automatic cutting, automatic docking, continuous release paper connection, and automatic winding, production efficiency is not only improved but also significantly enhanced in terms of continuity, stability, and controllability. Simultaneously, this production line reduces reliance on manual experience and operation, minimizing the impact of human factors on product quality. It also reduces the number of on-site operators and their workload, demonstrating significant industrial application value and potential for widespread adoption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the steps of the present invention; Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Example Please see Figure 1 The present invention provides the following technical solution: A production line for bonding thermal adhesive tape to coils, characterized by the following specific steps: S1. Feeding and connection at the beginning: The rubber strip is unwound and conveyed by an automatic unwinding feeding device, and the end of the rubber strip is connected by a front-end PE docking device. S2, Front-end material storage and buffer: The first material storage device stores the rubber strip to ensure the continuous operation of subsequent processes when the front end is connected; S3. Surface treatment: The surface of the rubber strip is polished and cleaned by a polishing and cleaning device; S4. Heat-sensitive tape application: The heat-sensitive tape is heated by the heat-sensitive tape application device and continuously applied to the surface of the tape. S5. Cooling and Shaping: The adhesive strip is rapidly cooled after the heat-sensitive tape has been applied using a cooling device; S6, Post-processing material storage and buffer: The pasted adhesive strips are stored through a second material storage device to adapt to changes in the cycle time of subsequent processes; S7. Defect handling and back-end connection: The defect of the rubber strip is detected by the defect detection and cutting device and the defective section is cut off and removed. Then, the cut rubber strip is reconnected by the back-end PE docking device. S8. Release paper connection and marking: The release paper of the thermal tape is connected by a peeling and hot-pressing device, and the connection position is marked by a coding device; S9. Traction and Coiling: The rubber strip is stably conveyed by the traction device and continuously wound up by the automatic coiling device.

[0022] Specifically, in step S4, the thermal tape bonding device includes a hot air heating unit and an infrared heating unit. The hot air heating unit is used to locally heat the area where the adhesive strip and the thermal tape are bonded, and the infrared heating unit is used to preheat the surface of the adhesive strip.

[0023] Specifically, in step S4, the thermal tape application device is equipped with a temperature detection unit, an airflow monitoring unit, and a tension control unit to monitor and adjust the temperature, airflow, and tape tension during the thermal tape application process.

[0024] Specifically, in steps S2 and S6, both the first and second storage devices adopt a floating storage structure and use sensors to detect the storage amount in order to achieve automatic switching between storage release and storage recovery.

[0025] Specifically, in step S7, the defect detection and cutting device identifies adhesive strip defects or tape offsets through a visual detection unit or a sensor detection unit, and outputs a control signal to drive the cutting mechanism to cut off the defective segment.

[0026] Specifically, in step S7, the cut adhesive strips are reconnected using a PE film to restore the continuous conveying of the adhesive strips.

[0027] Specifically, in step S9, the automatic winding device includes a receiving mechanism and a transverse winding mechanism. The transverse winding mechanism is used to control the reciprocating movement and arrangement of the adhesive strip on the barrel to achieve uniform winding of the adhesive strip.

[0028] Specifically, the device is characterized by comprising, sequentially arranged along the production direction, an automatic unwinding and feeding device, a first storage device, a grinding and cleaning device, a thermal tape pasting device, a cooling device, a second storage device, a defect detection and cutting device, a rear PE docking device, a peeling and heat-bonding device, a coding device, a traction device, and an automatic winding device, with a front PE docking device located in front of the automatic unwinding and feeding device; the thermal tape pasting device is used to heat the adhesive strip and complete the continuous bonding of the thermal tape; the defect detection and cutting device is used to detect and cut defective sections; the peeling and heat-bonding device is used to connect the release paper; and the automatic winding device is used to continuously wind the finished adhesive strip. All devices are linked through a control system to achieve continuous pasting and continuous winding production of the adhesive strip.

[0029] In this embodiment, the entire production line is arranged at the same reference center height (1050±50mm). Along the production direction, from right to left, the following devices are sequentially installed: a front-end PE docking device, an automatic unwinding and feeding device, a first material storage device, a grinding and cleaning device, a thermal tape pasting device, a cooling device, a second material storage device, a defect detection and cutting device, a rear-end PE docking device, an auxiliary peeling and heat sealing device, a coding device, a servo traction device, and an automatic winding device. All devices are linked and controlled by a PLC centralized control system. The control circuit uses DC24V, and the power supply is a three-phase five-wire AC380V 50Hz system. The total power of the entire line is approximately 48KW, and the air source pressure is not less than 0.7MPa, making it suitable for indoor operation. The entire line is equipped with a multi-point photoelectric speed regulation mechanism and an encoder feedback system to achieve synchronous speed control across the entire line, with a production speed of 25-30m / min.

[0030] A mobile PE joining device is installed at the front end of the production line to connect the first ends of the coiled adhesive strips. This device features an integrated frame structure with adjustable feet at the bottom, a center height controlled at 1050±25mm, and is equipped with two-hand button operation and safety protection devices. The PE joining device includes a film release mechanism, an electrothermal cutting mechanism, a pneumatic clamping mechanism, an infrared heating system, and a mold clamping system. The mold adopts a two-cavity structure, allowing for simultaneous joining of symmetrical left and right pieces. The PE film is supplied via a non-powered damping release method, and is punched and positioned by a cylinder drive. Infrared heating then melts and bonds the end face of the adhesive strip to the PE film, and finally, pneumatic pressing completes the joining. A single cycle time does not exceed 30 seconds. After joining, the adhesive strips enter an automatic unwinding and feeding device, which uses a gear-driven structure and is equipped with traction rollers and guide rollers for stable unwinding. The feeding speed range is 0 to 25 m / min, with an adjustment accuracy of 0.1 m / min. It has a forward and reverse rotation switching function, and is equipped with a material breakage detection alarm and a rubber strip torsion direction recognition function to ensure stable material supply.

[0031] After automatic unwinding, the adhesive strip enters the first storage device. This storage device adopts a floating storage structure, consisting of a fixed wheel set and a moving wheel set. The moving wheel set is driven by a Siemens servo motor and synchronous belt to rise and fall along a linear guide rail, realizing the adjustment of the storage amount. The storage path forms a LOOP structure with upper and lower floating wheels, and an infrared distance sensor is installed on the outside to detect the storage amount in real time. The storage capacity is approximately 85m³. During normal production, the storage rack is in a high position. When the front end is performing PE bonding or during a short pause, the storage rack descends to release the stored material, thereby ensuring the continuous operation of the subsequent heat-sensitive bonding process. The inlet traction uses a nylon drive wheel covered with damping material, and the friction is enhanced by cylinder clamping. The maximum traction speed can reach 50m / min. The outlet end uses an upper and lower conveyor belt structure to achieve stable output.

[0032] The rubber strip enters the grinding and cleaning device, which consists of two grinding units and one cleaning unit, for a total of three units. The grinding motor is a high-speed spindle motor with an adjustable speed range of 60–6000 rpm. The grinding mechanism supports X / Y / Z three-way adjustment, with the Z-axis rotation adjustable from 0–30° to accommodate rubber strips of different cross-sectional shapes. The rubber strip is fixed by a positioning mold and pressed down by a cylinder to ensure stable grinding. The cleaning unit uses a bristle brush and a centrifugal fan (airflow approximately 2800 m³ / h). 3 The equipment performs dust removal (at a rate of / h) and collects the dust centrally using a dry dust extraction system. The entire unit is equipped with an acrylic protective cover and safety warning devices, preventing dust from escaping during grinding and ensuring a safe working environment.

[0033] After processing, the adhesive strips enter the thermal tape bonding device. This device is the core equipment of the entire production line, mainly including an infrared preheating unit, a hot air heating unit, a tape feeding system, a pressing mechanism, and a tension control system. The infrared preheating unit uses two sets of 1.5kW IR heaters, which concentrate heat onto the surface of the adhesive strip through reflectors, ensuring a stable surface temperature of over 60℃. The temperature is monitored in real time by an infrared thermometer. The hot air heating unit uses a hot air gun with a maximum temperature of 800℃. The air outlet is arc-shaped and adjustable in three directions (XYZ), allowing the hot air to be precisely applied to the bonding area between the adhesive strip and the tape, ensuring full activation of the adhesive layer. The tape feeding system adopts a double-roll feeding + storage structure with a storage length of approximately 15m and is equipped with a pneumatic pressing mechanism. During tape replacement, storage compensation allows for non-stop operation. The tape tension is controlled in a closed loop using an automatic tension controller and a three-pulley sensor structure, and also includes a material breakage detection function. The pressing mechanism uses copper pressure rollers, internally cooled by circulating water. The roller position is adjustable in the YZ direction (0-10mm), and the pressing force is controlled by adjusting the air pressure to ensure bonding quality. The equipment also includes an airflow monitoring unit (flow meter 40-600SCHF), a pressure detection unit, and a temperature control module, enabling coordinated control of multiple parameters such as temperature, airflow, and tension. Furthermore, a vision inspection system is installed in the pasting area to monitor tape deviation in real time, outputting a signal and alarm when the deviation exceeds the limit.

[0034] After application, the adhesive strip enters the cooling device. The cooling device is a fully enclosed cooling tank structure, approximately 3 meters long, made of 304 stainless steel. The cooling tank has an inner and outer double-layer structure; the inner tank serves as a cold air channel, supplied by a 3-horsepower refrigeration unit and circulated within the inner tank by a circulating fan. The effective length of the cooling section is approximately 2–2.5 meters, with guide rollers installed approximately every 600 mm inside. The top of the cooling tank is equipped with a flip-top door and an observation window, and a non-contact temperature detection device is installed at the outlet to monitor the outlet temperature of the adhesive strip, ensuring the adhesive layer has fully cured.

[0035] After cooling, the rubber strips enter the second storage device, which has a structure basically the same as the first storage device, but with a storage capacity of approximately 144m³. When the downstream equipment (such as cutting or winding) is paused, the storage rack rises to store the material; when the downstream equipment resumes operation, the storage rack descends to release the stored material, thus achieving cycle time matching between the upstream and downstream processes.

[0036] The adhesive strip enters the defect detection and cutting device. This device includes a vision inspection unit or color mark sensor to detect defects, tape misalignment, and other abnormalities. The equipment is equipped with an infeed fixture table with a guiding device and sensors in three directions to ensure stable tape movement. Upon detection of a defect, the control system drives a cylinder-driven punching mechanism to cut the strip. The punching mechanism uses an upper and lower belt clamping conveyor structure, with the upper belt pressed by a cylinder. The cutting is pneumatic, resulting in a clean cut that facilitates subsequent PE splicing. After punching, the platform flips, allowing the defective section to be discharged via the waste conveyor belt below. After defect cutting, the adhesive strip is reconnected via a rear-end PE splicing device, using the same connection method as the front end. Continuous recovery conveying is achieved through heating and pressing.

[0037] A peeling and heat-sealing device is installed to connect the release paper of the adhesive tape. This device uses a copper pressing structure, achieving release paper bonding through heating and pressure, and also features an automatic cutting function. The length of the peeling film output is adjustable (20-50mm), and parameters such as temperature and pressing time can be set as needed. A coding device is installed at this station to mark the joint position, including the location of defective sections or connection point information, facilitating subsequent identification.

[0038] The adhesive strips are stably conveyed via a servo belt traction device, which employs servo drive control for precise speed matching. Finally, they enter an automatic winding device, which includes a take-up mechanism, a tension control system, and a transverse winding mechanism. The transverse winding mechanism, through reciprocating motion, ensures the adhesive strips are evenly distributed on the drum, preventing crossing, wrinkles, and deformation. During winding, the tension control system maintains constant tension, achieving high-quality large-roll take-up.

[0039] The entire production line utilizes a Siemens PLC + touchscreen control system, employing sensors, encoders, and vision systems to achieve data acquisition and coordinated control. Through the coordinated operation of the front and rear material storage devices, the thermal bonding process can continue without stopping during roll changing, splicing, and cutting operations, enabling continuous production with single roll lengths reaching the kilometer level. Simultaneously, monitoring multiple parameters such as temperature, airflow, tension, offset, and defect detection ensures stable product quality and data traceability.

[0040] Through the aforementioned structural setup and process coordination, this production line integrates various processes such as front-end PE splicing, automatic unwinding, front-end material storage, grinding and cleaning, thermal tape bonding, cooling and shaping, rear-end material storage, defect detection and cutting, rear-end PE splicing, release paper connection, inkjet marking, traction conveying, and automatic coiling. This transforms previously fragmented processing steps requiring multiple personnel into a continuous, automated production process. Compared to existing production methods consisting of only a few standalone machines for feeding, grinding, and thermal bonding, this production line eliminates frequent shutdowns when changing adhesive strips, handling joints, cutting defective sections, and changing receiving stations, significantly improving the continuous operation capability and output efficiency per unit time.

[0041] This production line is equipped with material storage devices at both the front and rear ends, allowing for the completion of front-end splicing operations and back-end anomaly handling and cycle time fluctuation processing while the material is stored in a buffer state. This means that while upstream connection is being performed, or downstream defective section removal or rewinding is being done, critical processes such as thermal tape application can continue to operate, avoiding repeated start-stop cycles in the thermal tape application process. Because the thermal tape application process requires high continuity in temperature, speed, and bonding condition, reducing the number of start-stop cycles not only improves production efficiency but also helps maintain stable process parameters, thereby improving the consistency of the finished product. Especially for longer adhesive strip products, this production line can achieve kilometer-level continuous production and coil delivery, a feat difficult to achieve with traditional segmented production methods.

[0042] This production line improves the adhesion conditions of the adhesive strip surface by adding a sanding and cleaning process before the adhesive strip enters the thermal tape bonding process. After sanding, surface impurities, oxide layers, or minor contaminants that hinder adhesion are effectively removed. Combined with subsequent cleaning, this allows for a more thorough bond between the thermal tape and the adhesive strip. This not only improves the adhesion strength of the tape but also helps reduce quality problems such as localized lifting, bubbling, and incomplete adhesion after bonding. For subsequent product assembly and use, it also improves the stability and reliability of the sealing structure.

[0043] In the thermal tape bonding process, this production line employs a combination of hot air heating and infrared heating units. On one hand, infrared preheating ensures the adhesive strip surface reaches a suitable temperature; on the other hand, hot air focuses on heating the bonding area between the adhesive strip and the thermal tape, thereby improving the activation and bonding effect of the thermal tape. Simultaneously, by incorporating temperature detection, airflow monitoring, and tension control units, key process parameters can be monitored and adjusted during bonding. This avoids the inconsistent bonding strength issues caused by unstable hot air intensity, insufficient preheating, or tape tension fluctuations found in existing technologies. This makes the bonding quality of the thermal tape easier to control and facilitates the generation of recordable, traceable, and deliverable process data, improving the overall process management level of the production line.

[0044] This production line is equipped with a cooling device after the heat-sensitive tape is applied, which rapidly cools and sets the newly applied tape. This allows the hot tape and tape to stabilize quickly, preventing displacement, deformation, or poor adhesion during conveying, storage, or winding due to residual heat. Especially in production scenarios requiring continuous winding of long lengths, rapid cooling provides a more stable product condition for subsequent traction, storage, and winding, thereby improving the continuity of the entire production line and the final winding quality.

[0045] In terms of product quality control, this production line integrates defect detection and cutting mechanisms within a continuous production line. Visual inspection units or sensor units identify tape defects and misalignments online, and the cutting mechanism automatically controls the precise removal of defective sections based on the identification results. Compared to existing methods that rely on manual visual inspection for defect identification, this production line reduces the instability caused by missed inspections, misjudgments, and human fatigue, minimizing the risk of defective products continuing to flow into subsequent processes. Furthermore, because defective sections are removed promptly online, it prevents the introduction of obviously defective areas into the entire roll of product, thereby improving the overall quality of the delivered roll.

[0046] After defective sections are cut, this production line reconnects the adhesive strips via a rear-end PE splicing device, restoring the broken strips to a continuous conveying state. This not only solves the problem of product interruption and difficulty in continuous winding after cutting in traditional production, but also enables online defect removal and continuous production to be achieved simultaneously. Furthermore, this production line uses an assisted peeling and heat-sealing device to connect the release paper of the heat-sensitive tape, ensuring that the release paper remains continuous at the joint. For end users, this continuous connection structure is more conducive to subsequent unwinding, use, and assembly of the product, and also facilitates delivery in whole rolls rather than in fragmented single sections, thereby improving the product's ease of use and commercialization.

[0047] By installing inkjet marking devices at the back end, this production line can also mark joint locations, processing locations, or specific process nodes. This allows for rapid identification of the corresponding location during subsequent inspection, warehousing, transportation, and customer use, improving traceability and manageability. Especially during quality analysis, process review, or after-sales troubleshooting, inkjet marking provides a more intuitive basis for problem localization, further improving product management efficiency.

[0048] In the material receiving stage, this production line uses an automatic winding device to replace traditional manual winding. A transverse winding mechanism controls the reciprocating movement and arrangement of the adhesive strips on the material cylinder, ensuring the strips are evenly wound along a predetermined trajectory. Compared to manual winding, automatic winding significantly improves receiving efficiency, reduces labor intensity, and minimizes problems such as stacking skew, compression deformation, and inconsistent winding tightness caused by uneven manual operation. The more consistent winding quality also benefits subsequent transportation, storage, and customer use. For long-length continuous products, automatic winding offers particularly significant advantages, effectively reducing labor costs and increasing overall line capacity.

[0049] From the perspective of the overall line effect, this production line, by systematically integrating multiple previously scattered processing units and coordinating technologies such as material buffering, online detection, automatic cutting, automatic docking, continuous release paper connection, and automatic coiling, not only improves production efficiency but also significantly enhances the continuity, stability, and controllability of the production process. Simultaneously, this production line reduces reliance on human experience and manual operation, minimizing the impact of human factors on product quality, and also reduces the number of on-site operators and their labor intensity. Therefore, it possesses significant industrial application value and potential for widespread adoption. The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A production line for bonding and rolling thermal adhesive tape, characterized in that: The specific steps are as follows: S1. Feeding and connection at the beginning: The rubber strip is unwound and conveyed by an automatic unwinding feeding device, and the end of the rubber strip is connected by a front-end PE docking device. S2, Front-end material storage and buffer: The first material storage device stores the rubber strip to ensure the continuous operation of subsequent processes when the front end is connected; S3. Surface treatment: The surface of the rubber strip is polished and cleaned by a polishing and cleaning device; S4. Heat-sensitive tape application: The heat-sensitive tape is heated by the heat-sensitive tape application device and continuously applied to the surface of the tape. S5. Cooling and Shaping: The adhesive strip is rapidly cooled after the heat-sensitive tape has been applied using a cooling device; S6, Post-processing material storage and buffer: The pasted adhesive strips are stored through a second material storage device to adapt to changes in the cycle time of subsequent processes; S7. Defect handling and back-end connection: The defect of the rubber strip is detected by the defect detection and cutting device and the defective section is cut off and removed. Then, the cut rubber strip is reconnected by the back-end PE docking device. S8. Release paper connection and marking: The release paper of the thermal tape is connected by a peeling and hot-pressing device, and the connection position is marked by a coding device; S9. Traction and Coiling: The rubber strip is stably conveyed by the traction device and continuously wound up by the automatic coiling device.

2. The adhesive strip and thermal tape bonding and rolling production line according to claim 1, characterized in that: In step S4, the thermal tape bonding device includes a hot air heating unit and an infrared heating unit. The hot air heating unit is used to locally heat the area where the adhesive strip and the thermal tape are bonded, and the infrared heating unit is used to preheat the surface of the adhesive strip.

3. The adhesive strip and thermal tape bonding and rolling production line according to claim 1, characterized in that: In step S4, the thermal tape application device is equipped with a temperature detection unit, an airflow monitoring unit, and a tension control unit to monitor and adjust the temperature, airflow, and tape tension during the thermal tape application process.

4. The adhesive strip and thermal tape bonding and rolling production line according to claim 1, characterized in that: In steps S2 and S6, both the first and second storage devices adopt a floating storage structure and use sensors to detect the storage amount in order to achieve automatic switching between storage release and storage recovery.

5. The adhesive strip and thermal tape bonding and rolling production line according to claim 1, characterized in that: In step S7, the defect detection and cutting device identifies adhesive strip defects or tape offsets through a vision detection unit or a sensor detection unit, and outputs a control signal to drive the cutting mechanism to cut off the defective segment.

6. The adhesive strip and thermal tape bonding and rolling production line according to claim 1, characterized in that: In step S7, the cut adhesive strips are reconnected using a PE film to restore the continuous conveying of the adhesive strips.

7. The adhesive strip and thermal tape bonding and rolling production line according to claim 1, characterized in that: In step S9, the automatic winding device includes a receiving mechanism and a transverse winding mechanism. The transverse winding mechanism is used to control the reciprocating movement and arrangement of the adhesive strip on the barrel to achieve uniform winding of the adhesive strip.

8. The adhesive strip and thermal tape bonding and rolling production line according to claim 1, characterized in that: The system includes an automatic unwinding and feeding device, a first storage device, a grinding and cleaning device, a thermal tape pasting device, a cooling device, a second storage device, a defect detection and cutting device, a rear PE splicing device, a peeling and heat-bonding device, a coding device, a traction device, and an automatic winding device arranged sequentially along the production direction. A front PE splicing device is also provided in front of the automatic unwinding and feeding device. The thermal tape pasting device is used to heat the adhesive strip and complete the continuous bonding of the thermal tape. The defect detection and cutting device is used to detect and cut defective sections. The peeling and heat-bonding device is used to connect the release paper. The automatic winding device is used to continuously wind up the finished adhesive strip. All devices are linked through a control system to achieve continuous pasting and continuous winding production of the adhesive strip.

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