A triangular towel production line

Abstract

The utility model relates to one -time health care product production equipment field especially, and more particularly to a kind of function perfect, production stable, intelligent degree high's triangular bandage production line, including control system, wood pulp unwinding device, lower layer toilet paper unwinding device, first core body forming device, first transfer wheel, first negative pressure adsorption conveying device, upper layer toilet paper unwinding device, first flat cutting device, core body wrapping wheel device, core body net pressure device, core body slitting device, core body transfer device, upper negative pressure adsorption conveying device, lower negative pressure adsorption conveying device, bulking paper / Blue cotton unwinding device, bulking paper / Blue cotton flat cutting device, water-repellent non-woven fabric unwinding device, water-repellent non-woven fabric slitting device, hydrophilic non-woven fabric unwinding device, front and rear block non-woven fabric unwinding device, rubber band unwinding device, three-piece embossing device, second flat cutting device, second core body forming device, second transfer wheel, second negative pressure adsorption conveying device, flow guide groove embossing device, PE film unwinding device, week seal device.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene product production equipment, and in particular to a triangular towel production line. Background Technology

[0002] Triangular bandages, widely used in medical and hygiene care fields, are experiencing increasing market demand. Traditional triangular bandage production methods are mostly manual or semi-automated, resulting in low production efficiency, inconsistent product quality, and significant material waste. With the development of automation technology, the application of automated production lines in triangular bandage production is gradually becoming a trend. However, existing triangular bandage production lines still have many shortcomings in terms of functional integration, production stability, quality control, and level of intelligence. For example, in the process of simultaneous unwinding of multiple materials, it is difficult to achieve high-precision tension control, leading to material stretching or loosening, which affects product quality. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model provides a triangular scarf production line with complete functions, stable production, and a high degree of intelligence.

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

[0005] A triangular towel production line includes a control system, a wood pulp unwinding device, a lower layer toilet paper unwinding device, a first core forming device, a first transfer wheel, a first negative pressure adsorption conveying device, an upper layer toilet paper unwinding device, a first flat cutting device, a core wrapping wheel device, a core mesh pressing device, a core slitting device, a core transfer device, an upper negative pressure adsorption conveying device, a lower negative pressure adsorption conveying device, an expanded paper / blue cotton unwinding device, an expanded paper / blue cotton flat cutting device, a water-repellent nonwoven fabric unwinding device, a water-repellent nonwoven fabric slitting device, a hydrophilic nonwoven fabric unwinding device, and front and rear baffles. Nonwoven fabric unwinding device, elastic band unwinding device, three-piece embossing device, second flat cutting device, second core forming device, second transfer wheel, second negative pressure adsorption conveying device, guide groove embossing device, PE film unwinding device, perimeter sealing device, back paper unwinding device, third flat cutting device, perimeter cutting device, absorbent transfer device, absorbent folding device, wing paper unwinding device, fourth flat cutting device, cross-section changing device, wrapping unwinding device, composite device, wrapping folding device, easy-tear sticker unwinding device, fifth flat cutting device, small package edge sealing device, and small package slitting device;

[0006] Both the first core forming device and the second core forming device have a wood pulp feeding end and a superabsorbent polymer material feeding end. The wood pulp feeding ends of the first core forming device and the second core forming device are respectively connected to the wood pulp unwinding device.

[0007] The first core forming device is located at the output end of the lower toilet paper unwinding device. The first transfer wheel and the first negative pressure adsorption conveying device are located at the output end of the first core forming device, and the first transfer wheel is distributed on the upper side of the first negative pressure adsorption conveying device. The first flat cutting device is located at the output end of the upper toilet paper unwinding device. The core wrapping wheel device is located at the output end of the first flat cutting device and the first negative pressure adsorption conveying device. The core mesh pressing device is located at the output end of the core wrapping wheel device. The core slitting device is located at the output end of the core mesh pressing device. The core transfer device is located at the output end of the core slitting device.

[0008] The elastic band unwinding device is located at the output end of the front and rear nonwoven fabric unwinding device; the water-repellent nonwoven fabric slitting device is located at the output end of the water-repellent nonwoven fabric unwinding device; the three-piece embossing device is located at the output ends of the elastic band unwinding device, the water-repellent fabric slitting device, and the hydrophilic nonwoven fabric unwinding device; the expanded paper / blue cotton flat cutting device is located at the output end of the expanded paper / blue cotton unwinding device; the second flat cutting device is located at the output ends of the three-piece embossing device and the expanded paper / blue cotton flat cutting device; and the upper negative pressure adsorption conveying device is located at the output ends of the second flat cutting device and the core transfer device.

[0009] The lower negative pressure adsorption conveying device is located at the output end of the upper negative pressure adsorption conveying device. The second core forming device is located at the output end of the lower negative pressure adsorption conveying device. The second transfer wheel and the second negative pressure adsorption conveying device are located at the output end of the second core forming device, with the second transfer wheel distributed on the upper side of the second negative pressure adsorption conveying device. The guide groove embossing device is located at the output end of the second negative pressure adsorption conveying device. The peripheral sealing device is located at the output end of the guide groove embossing device and the PE film unwinding device. The third flat cutting device is located at the output end of the backing paper unwinding device. The peripheral cutting device is located at the output end of the third flat cutting device and the peripheral sealing device. The absorbent transfer device is located at the output end of the peripheral cutting device, the absorbent folding device is located at the output end of the absorbent transfer device, the fourth flat cutting device is located at the output end of the wing paper unwinding device, the cross-section changing device is located at the output end of the fourth flat cutting device and the absorbent folding device, the composite device is located at the output end of the cross-section changing device and the wrapping unwinding device, the wrapping folding device is located at the output end of the composite device, the fifth flat cutting device is located at the output end of the easy-tear label unwinding device, the small package sealing device is located at the output end of the fifth flat cutting device and the wrapping folding device, and the small package slitting device is located at the output end of the small package sealing device.

[0010] Furthermore, a scrap material separation device is provided between the absorbent transfer device and the absorbent folding device.

[0011] Furthermore, the control system includes a PLC main control module, which is connected via fieldbus to the servo drives of the wood pulp unwinding device, the lower layer toilet paper unwinding device, the upper layer toilet paper unwinding device, and the expanded paper / blue cotton unwinding device to achieve multi-axis synchronous unwinding speed control.

[0012] Furthermore, the control system is equipped with a visual inspection subsystem, which includes a CCD camera group disposed between the first flat cutting device and the core wrapping wheel device. The CCD camera group is used to collect core edge alignment data in real time and dynamically adjust the phase offset of the first transfer wheel through a closed-loop control algorithm, with an alignment error ≤0.2mm.

[0013] Furthermore, the control system includes a dual negative pressure adsorption collaborative control module. The dual negative pressure adsorption collaborative control module monitors the adsorption force difference between the upper negative pressure adsorption conveying device and the lower negative pressure adsorption conveying device in real time through a pressure sensor. When the difference exceeds a set threshold, it automatically triggers the variable frequency fan speed compensation to ensure the stability of core transfer.

[0014] Furthermore, the control system integrates a rubber band tension closed-loop control system, which includes a tension sensor and a PID controller located at the output end of the rubber band unwinding device. The constant tension output is continuously adjustable within the range of 0.1-5N by adjusting the current of the magnetic powder brake.

[0015] Furthermore, the control system is equipped with a fault prediction module, which uses an LSTM neural network model to predict polymer superabsorbent resin feeding blockage faults by collecting motor current, temperature and vibration spectrum data of the second core molding device.

[0016] Furthermore, the control system includes a multi-level speed matching module. The multi-level speed matching module collects the linear speed of the first core forming device and the second core forming device in real time through an encoder. When the speed difference exceeds 2%, the transmission ratio of the second transfer wheel is automatically adjusted to ensure that the production cycle of the two cores is synchronized.

[0017] Furthermore, the control system integrates a remote operation and maintenance interface, which supports the 5G communication protocol and allows remote modification of the ultrasonic welding parameters of the sealing device via a cloud server.

[0018] Furthermore, the control system is equipped with a quality traceability subsystem. The quality traceability subsystem assigns a unique ID to each triangular scarf product through RFID tags and associates it with the key process parameters of the first flat cutting device, the circumferential cutting device and the fifth flat cutting device in the production process, so as to realize full-process data traceability.

[0019] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This triangular scarf production line integrates numerous production links into one, from raw material unwinding to final product slitting and branch output. The orderly connection of each device reduces material transfer time and labor costs between different processes, significantly improving the continuity and efficiency of the overall production process. Furthermore, the production line is equipped with multiple core forming devices, flat cutting devices, and other key equipment. These devices can work in parallel at different stages, and through a reasonable layout and conveying devices, precise material transfer and collaborative processing are achieved, further increasing product output per unit time. Simultaneously, relying on a control system for automated regulation of the entire production line, the operating parameters of each device can be precisely controlled, ensuring that each production link proceeds stably according to the preset program and rhythm, avoiding errors and delays that may be caused by manual operation. The entire production line achieves a high degree of automated production, with most production links automatically completed by machines, reducing the number and intensity of manual operations. Operators only need to set and monitor parameters in the control system, realizing automated continuous production of various materials and processes, reducing human intervention, improving production efficiency and product quality stability, and simultaneously reducing production costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the triangular scarf production line in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the front half of the triangular scarf production line in this embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the rear half of the triangular scarf production line in an embodiment of this utility model;

[0023] Figure 4 This is a circuit module diagram of an embodiment of the present utility model. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] The embodiment of this utility model is as follows:

[0026] refer to Figures 1 to 4As shown, a triangular towel production line includes a control system 1, a wood pulp unwinding device 2, a lower layer toilet paper unwinding device 3, a first core forming device 4, a first transfer wheel 5, a first negative pressure adsorption conveying device 6, an upper layer toilet paper unwinding device 7, a first flat cutting device 8, a core wrapping wheel device 9, a core mesh pressing device 10, a core slitting device 11, a core transfer device 12, an upper negative pressure adsorption conveying device 13, a lower negative pressure adsorption conveying device 14, an expanded paper / blue cotton unwinding device 15, an expanded paper / blue cotton flat cutting device 16, a water-repellent nonwoven fabric unwinding device 17, a water-repellent nonwoven fabric slitting device 18, a hydrophilic nonwoven fabric unwinding device 19, a front and rear baffle nonwoven fabric unwinding device 20, and an elastic band unwinding device 21. 1. Three-piece embossing device; 22. Second flat cutting device; 23. Second core forming device; 24. Second transfer wheel; 25. Second negative pressure adsorption conveying device; 26. Guide groove embossing device; 27. PE film unwinding device; 28. Peripheral sealing device; 29. ​​Backing paper unwinding device; 30. Third flat cutting device; 31. Peripheral cutting device; 32. Absorbent transfer device; 33. Absorbent folding device; 34. Wing paper unwinding device; 35. Fourth flat cutting device; 36. Horizontal change device; 37. Wrapping unwinding device; 38. Composite device; 39. Wrapping folding device; 40. Easy-tear sticker unwinding device; 41. Fifth flat cutting device; 42. Small package edge sealing device; 43. Small package slitting device; 44. Dividing device; 45. and two output devices; 46.

[0027] Both the first core forming device 4 and the second core forming device 24 have a wood pulp feeding end and a superabsorbent polymer material feeding end. The wood pulp feeding ends of the first core forming device 4 and the second core forming device 24 are respectively connected to the wood pulp unwinding device 2.

[0028] The first core forming device 4 is located at the output end of the lower toilet paper unwinding device 3. The first transfer wheel 5 and the first negative pressure adsorption conveying device 6 are located at the output end of the first core forming device 4, and the first transfer wheel 5 is distributed on the upper side of the first negative pressure adsorption conveying device 6. The first flat cutting device 8 is located at the output end of the upper toilet paper unwinding device 7. The core wrapping wheel device 9 is located at the output end of the first flat cutting device 8 and the first negative pressure adsorption conveying device 6. The core mesh pressing device 10 is located at the output end of the core wrapping wheel device 9. The core slitting device 11 is located at the output end of the core mesh pressing device 10. The core transfer device 12 is located at the output end of the core slitting device 11.

[0029] The elastic band unwinding device 21 is located at the output end of the front and rear nonwoven fabric unwinding device 20; the water-repellent nonwoven fabric slitting device 18 is located at the output end of the water-repellent nonwoven fabric unwinding device 17; the three-piece embossing device 22 is located at the output ends of the elastic band unwinding device 21, the water-repellent fabric slitting device 18, and the hydrophilic nonwoven fabric unwinding device 19; the expanded paper / blue cotton flat cutting device 16 is located at the output end of the expanded paper / blue cotton unwinding device 15; the second flat cutting device 23 is located at the output ends of the three-piece embossing device 22 and the expanded paper / blue cotton flat cutting device 16; and the upper negative pressure adsorption conveying device 13 is located at the output ends of the second flat cutting device 23 and the core transfer device 12.

[0030] The lower negative pressure adsorption conveying device 14 is located at the output end of the upper negative pressure adsorption conveying device 13. The second core forming device 24 is located at the output end of the lower negative pressure adsorption conveying device 14. The second transfer wheel 25 and the second negative pressure adsorption conveying device 26 are located at the output end of the second core forming device 24, with the second transfer wheel 25 distributed on the upper side of the second negative pressure adsorption conveying device 26. The guide groove embossing device 27 is located at the output end of the second negative pressure adsorption conveying device 26. The peripheral sealing device 29 is located at the output end of the guide groove embossing device 27 and the PE film unwinding device 28. The third flat cutting device 31 is located at the output end of the backing paper unwinding device 30. The peripheral cutting device 32 is located at the output end of the third flat cutting device 31 and the peripheral sealing device 29. The absorbent transfer device 33 is located at the output end of the peripheral cutting device 32. The absorbent folding device 34 is located at the output end of the absorbent transfer device 13. The output end of the take-up transfer device 33; the fourth flat cutting device 36 is located at the output end of the wing paper unwinding device 35; the cross-changing device 37 is located at the output end of the fourth flat cutting device 36 and the absorbent folding device 34; the composite device 39 is located at the output end of the cross-changing device 37 and the wrapping unwinding device 38; the wrapping folding device 40 is located at the output end of the composite device 39; the fifth flat cutting device 42 is located at the output end of the easy-tear adhesive unwinding device 41; the small package sealing device 43 is located at the output end of the fifth flat cutting device 42 and the wrapping folding device 40; the small package slitting device 44 is located at the output end of the small package sealing device 43; the branching device 45 has one input port and two output ports; the input port of the branching device 45 is located at the output end of the small package slitting device 44; and the two output devices 46 are located at the two output ports of the branching device 45.

[0031] This triangular scarf production line integrates numerous production stages, from raw material unwinding to final product slitting and distribution. The interconnected devices reduce material transfer time and labor costs between different processes, significantly improving the overall production flow's continuity and efficiency. The production line includes multiple core forming and flat-cutting devices, which can operate in parallel at different stages. Through a rational layout and conveying system, precise material transfer and collaborative processing are achieved, further increasing product output per unit time. The control system automates the entire production line, precisely controlling the operating parameters of each device to ensure stable operation according to preset procedures and rhythms. This avoids errors and delays that may occur with manual operation. The entire production line achieves a high degree of automation, with most production stages completed automatically by machines, reducing manual operation and its intensity. Operators only need to set and monitor parameters in the control system, enabling automated continuous production of various materials and processes. This reduces human intervention, improves production efficiency and product quality stability, and lowers production costs.

[0032] Furthermore, during the production process, both the first core forming device 4 and the second core forming device 24 are equipped with wood pulp feeding ends and superabsorbent polymer material feeding ends, enabling precise control of the mixing ratio of the two raw materials and the forming process, ensuring the quality and performance stability of the core. Simultaneously, the core wrapping wheel device 9, core mesh pressing device 10, and core cutting device 11 in the production line perform fine processing on the core, ensuring that the shape, size, and structure of the core meet design requirements, improving the product's absorbency and user comfort. Multiple flat cutting devices precisely cut different materials, ensuring the dimensional accuracy of each part of the product. The perimeter sealing device and perimeter cutting device perform peripheral sealing and cutting of the product, ensuring neat edges and good sealing. In addition, the small package sealing device 43 and small package cutting device 44 seal and cut the final product, further ensuring the product's appearance quality and packaging integrity, providing consumers with high-quality triangular scarves.

[0033] Furthermore, a scrap separation device 47 is provided between the absorbent transfer device 33 and the absorbent folding device 34. During the process of the absorbent being transferred from the transfer device to the folding device, the scrap separation device can separate the scrap generated during the production process, preventing the scrap from being mixed into the final product, ensuring that the quality and specifications of the product meet the requirements, effectively removing the scrap during the production process, improving the purity and quality of the product, reducing subsequent processing steps, and lowering production costs.

[0034] In this embodiment, the control system 1 includes a PLC main control module 101. The PLC main control module 101 is connected to the servo drives of the wood pulp unwinding device 2, the lower layer toilet paper unwinding device 3, the upper layer toilet paper unwinding device 7, and the expanded paper / blue cotton unwinding device 15 via a fieldbus to achieve multi-axis synchronous unwinding speed control. The PLC main control module 101 adopts a distributed control strategy, and collects tension sensor data of each unwinding device in real time via a fieldbus (such as Profibus-DP). According to the preset tension control algorithm (such as fuzzy PID control algorithm), it calculates the control signals required by each servo drive, adjusts the unwinding speed, and keeps the unwinding tension near the set value. The tension fluctuation range is controlled within ±0.5N. By realizing multi-axis synchronous unwinding speed control through the PLC main control module 101 and the fieldbus, the unwinding tension can be precisely controlled, avoiding material breakage or deformation due to excessive tension fluctuation, and ensuring the stability of the production process and the uniformity of product quality.

[0035] In this embodiment, the control system 1 is equipped with a visual inspection subsystem 102. The visual inspection subsystem 102 includes a CCD camera group 112 disposed between the first flat cutting device 8 and the core wrapping wheel device 9. This CCD camera group is used to acquire core edge alignment data in real time and dynamically adjust the phase offset of the first transfer wheel 5 through a closed-loop control algorithm, ensuring an alignment error ≤ 0.2 mm. The CCD camera group acquires core edge images at a frequency of 30 frames per second, extracts core edge features through image processing algorithms (such as edge detection algorithms), and calculates core edge alignment data. The closed-loop control algorithm calculates the phase offset adjustment value of the first transfer wheel based on the deviation between the alignment data and the set value using a proportional-integral control strategy, keeping the alignment error within ±0.2 mm. The visual inspection subsystem 102 can monitor the core edge alignment in real time and dynamically adjust the phase offset of the first transfer wheel 5 through closed-loop control, effectively improving the core wrapping accuracy and ensuring the product's appearance quality and performance stability.

[0036] In this embodiment, the control system 1 includes a dual negative pressure adsorption collaborative control module 103. The dual negative pressure adsorption collaborative control module 103 monitors the adsorption force difference between the upper negative pressure adsorption conveying device 13 and the lower negative pressure adsorption conveying device 14 in real time via a pressure sensor 113. When the difference exceeds a set threshold, it automatically triggers variable frequency fan speed compensation to ensure core transfer stability. The pressure sensor 113 collects adsorption force data from the upper and lower negative pressure adsorption conveying devices in real time, and the dual negative pressure adsorption collaborative control module 103 calculates the adsorption force difference between the two. When the difference exceeds a set threshold (e.g., ±5Pa), the variable frequency fan speed is adjusted according to a preset control algorithm (e.g., incremental PID control algorithm) to restore the adsorption force difference to the normal range, ensuring core transfer stability. The dual negative pressure adsorption collaborative control module 103 can monitor and adjust the adsorption force of the upper and lower negative pressure adsorption conveying devices in real time, avoiding core displacement or falling during transfer due to adsorption force differences, thus improving the reliability of the production process and product quality.

[0037] In this embodiment, the control system 1 integrates a rubber band tension closed-loop control system 104. The rubber band tension closed-loop control system 104 includes a tension sensor 114 and a PID controller 124 located at the output end of the rubber band unwinding device 21. By adjusting the current of the magnetic powder brake, a continuously adjustable constant tension output within the range of 0.1-5N is achieved. The tension sensor 114 collects the tension data of the rubber band in real time. The PID controller 115 calculates the required current adjustment value for the magnetic powder brake based on the deviation between the tension setpoint and the actual measured value using a PID control algorithm. By adjusting the current of the magnetic powder brake, the rubber band tension is continuously adjustable within the range of 0.1-5N, with a tension control accuracy of ±0.05N. The rubber band tension closed-loop control system 104 can accurately control the tension of the rubber band, ensuring the stability and consistency of the rubber band during the production process and improving the elasticity and performance of the product.

[0038] In this embodiment, the control system 1 is equipped with a fault prediction module 105. The fault prediction module 105 collects motor current, temperature, and vibration spectrum data of the second core molding device 24 and uses an LSTM neural network model to predict superabsorbent polymer (SAP) feeding blockage faults. The fault prediction module collects motor current, temperature, and vibration spectrum data of the second core molding device 24 in real time through sensors. The collected data is input into a pre-trained LSTM neural network model. The LSTM neural network model learns and analyzes historical data to predict the probability of SAP feeding blockage faults. When the predicted probability exceeds a set threshold (e.g., 80%), a fault warning is issued. The fault prediction module can predict SAP feeding blockage faults in advance, take timely measures for repair and handling, avoid production interruptions and equipment damage, and reduce maintenance costs and production losses.

[0039] In this embodiment, the control system 1 includes a multi-level speed matching module 106. The multi-level speed matching module 106 collects the linear velocities of the first core forming device 4 and the second core forming device 24 in real time via an encoder 116. When the speed difference exceeds 2%, it automatically adjusts the transmission ratio of the second transfer wheel 25 to ensure synchronized production cycles for both cores. The encoder collects the linear velocity data of the first core forming device 4 and the second core forming device 24 in real time, and the multi-level speed matching module calculates the speed difference between them. When the speed difference exceeds 2%, it calculates the required transmission ratio adjustment value for the second transfer wheel 25 according to a preset speed matching algorithm (such as a speed compensation algorithm based on transmission ratio adjustment). By adjusting the transmission ratio of the second transfer wheel 25, the production cycles for both cores are synchronized. The multi-level speed matching module can monitor and adjust the linear velocities of the first core forming device 4 and the second core forming device 24 in real time, ensuring synchronized production cycles for both cores, avoiding product quality problems caused by speed differences, and improving production efficiency and product consistency.

[0040] In this embodiment, the control system 1 integrates a remote operation and maintenance interface 107. The remote operation and maintenance interface 107 supports the 5G communication protocol, allowing remote modification of the ultrasonic welding parameters of the sealing device 29 via a cloud server. The remote operation and maintenance interface 107 establishes a connection with the cloud server via the 5G communication protocol, uploading the current ultrasonic welding parameters of the sealing device 29 to the cloud server. Operators can send modification commands through the cloud server. After receiving the command, the remote operation and maintenance interface 107 modifies the ultrasonic welding parameters of the sealing device 29. During the modification process, data encryption and verification algorithms ensure the security and accuracy of data transmission. The remote operation and maintenance interface 107 supports the 5G communication protocol, enabling remote modification of the ultrasonic welding parameters of the sealing device 29, facilitating remote debugging and maintenance by operators, and improving the maintainability and production efficiency of the equipment.

[0041] In this embodiment, the control system 1 is equipped with a quality traceability subsystem 108. This subsystem assigns a unique ID to each triangular scarf product using RFID tags and associates it with key process parameters of the first flat-cutting device 8, the peripheral-cutting device 32, and the fifth flat-cutting device 42 during production, achieving full-process data traceability. At the initial stage of production for each triangular scarf product, the subsystem assigns a unique ID to the product using an RFID reader. During production, sensors and a data acquisition system collect key process parameters (such as cutting size and cutting speed) of the first flat-cutting device 8, the peripheral-cutting device 32, and the fifth flat-cutting device 42 in real time, and associate these parameters with the product ID for storage. When product quality information needs to be queried, the product ID is obtained by reading the RFID tag on the product, and then the relevant process parameters and production information are retrieved from the database. Through RFID tags and database management, the quality traceability subsystem 108 achieves full-process production data traceability for each triangular scarf product, which helps to quickly locate and resolve quality problems and improves the efficiency and level of product quality management.

[0042] In this embodiment, the control system 1 includes an energy efficiency optimization module 109. This module analyzes the power factor of the flow channel embossing device 27 and the composite device 39, and dynamically adjusts the inverter output frequency to reduce the overall energy consumption of the production line by 8%-12%. The energy efficiency optimization module 109 collects power factor data of the flow channel embossing device 27 and the composite device 39 in real time using a power analyzer. Based on a preset energy efficiency optimization algorithm (such as an inverter frequency control algorithm based on power factor adjustment), it calculates the required output frequency adjustment value for the inverter. By dynamically adjusting the inverter output frequency, the equipment operates at the optimal power factor, reducing energy consumption. Actual testing shows that the overall energy consumption of the production line can be reduced by 8%-12%. The energy efficiency optimization module can dynamically adjust the inverter output frequency according to the power factor of the equipment, achieving energy-saving operation of the production line, reducing production costs, and improving the economic benefits of the enterprise.

[0043] In this embodiment, the control system 1 integrates a safety interlock protection system 201. When material blockage is detected at the output end of the branching device 45, the safety interlock protection system 201 automatically triggers an emergency stop of the absorber folding device 33 and activates an audible and visual alarm device, with a response time ≤200ms. The safety interlock protection system 201 monitors the material status at the output end of the branching device in real time through sensors. When material blockage is detected, the sensor transmits a signal to the control system 1. Within 200ms of receiving the signal, the control system 1 automatically triggers an emergency stop of the absorber folding device 33 through control elements such as relays, and simultaneously activates the audible and visual alarm device to remind operators to handle the fault promptly. The safety interlock protection system 201 can react quickly when material blockage is detected at the output end of the branching device 45, automatically triggering an emergency stop of the absorber folding device 33 and activating an alarm, effectively preventing equipment damage and production accidents, and ensuring the safety and stability of the production process.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0046] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A triangular scarf production line, characterized in that: Includes a control system, a wood pulp unwinding device, a lower layer toilet paper unwinding device, a first core forming device, a first transfer wheel, a first negative pressure adsorption conveying device, an upper layer toilet paper unwinding device, a first flat cutting device, a core wrapping wheel device, a core wire pressing device, a core slitting device, a core transfer device, an upper negative pressure adsorption conveying device, a lower negative pressure adsorption conveying device, an expanded paper / blue cotton unwinding device, an expanded paper / blue cotton flat cutting device, a water-repellent nonwoven fabric unwinding device, a water-repellent nonwoven fabric slitting device, a hydrophilic nonwoven fabric unwinding device, and front and rear nonwoven fabric unwinding devices. The device includes: a roll-up device, an elastic unwinding device, a three-piece embossing device, a second flat-cutting device, a second core forming device, a second transfer wheel, a second negative pressure adsorption conveying device, a guide groove embossing device, a PE film unwinding device, a perimeter sealing device, a backing paper unwinding device, a third flat-cutting device, a perimeter cutting device, an absorbent transfer device, an absorbent folding device, a wing paper unwinding device, a fourth flat-cutting device, a cross-section changing device, a wrapping unwinding device, a laminating device, a wrapping folding device, an easy-tear sticker unwinding device, a fifth flat-cutting device, a small package sealing device, and a small package slitting device. Both the first core forming device and the second core forming device have a wood pulp feeding end and a superabsorbent polymer material feeding end. The wood pulp feeding ends of the first core forming device and the second core forming device are respectively connected to the wood pulp unwinding device. The first core forming device is located at the output end of the lower toilet paper unwinding device. The first transfer wheel and the first negative pressure adsorption conveying device are located at the output end of the first core forming device, and the first transfer wheel is distributed on the upper side of the first negative pressure adsorption conveying device. The first flat cutting device is located at the output end of the upper toilet paper unwinding device. The core wrapping wheel device is located at the output end of the first flat cutting device and the first negative pressure adsorption conveying device. The core mesh pressing device is located at the output end of the core wrapping wheel device. The core slitting device is located at the output end of the core mesh pressing device. The core transfer device is located at the output end of the core slitting device. The elastic band unwinding device is located at the output end of the front and rear nonwoven fabric unwinding device; the water-repellent nonwoven fabric slitting device is located at the output end of the water-repellent nonwoven fabric unwinding device; the three-piece embossing device is located at the output ends of the elastic band unwinding device, the water-repellent fabric slitting device, and the hydrophilic nonwoven fabric unwinding device; the expanded paper / blue cotton flat cutting device is located at the output end of the expanded paper / blue cotton unwinding device; the second flat cutting device is located at the output ends of the three-piece embossing device and the expanded paper / blue cotton flat cutting device; and the upper negative pressure adsorption conveying device is located at the output ends of the second flat cutting device and the core transfer device. The lower negative pressure adsorption conveying device is located at the output end of the upper negative pressure adsorption conveying device. The second core forming device is located at the output end of the lower negative pressure adsorption conveying device. The second transfer wheel and the second negative pressure adsorption conveying device are located at the output end of the second core forming device, with the second transfer wheel distributed on the upper side of the second negative pressure adsorption conveying device. The guide groove embossing device is located at the output end of the second negative pressure adsorption conveying device. The peripheral sealing device is located at the output end of the guide groove embossing device and the PE film unwinding device. The third flat cutting device is located at the output end of the backing paper unwinding device. The peripheral cutting device is located at the output end of the third flat cutting device and the peripheral sealing device. The absorbent transfer device is located at the output end of the peripheral cutting device, the absorbent folding device is located at the output end of the absorbent transfer device, the fourth flat cutting device is located at the output end of the wing paper unwinding device, the cross-section changing device is located at the output end of the fourth flat cutting device and the absorbent folding device, the composite device is located at the output end of the cross-section changing device and the wrapping unwinding device, the wrapping folding device is located at the output end of the composite device, the fifth flat cutting device is located at the output end of the easy-tear label unwinding device, the small package sealing device is located at the output end of the fifth flat cutting device and the wrapping folding device, and the small package slitting device is located at the output end of the small package sealing device.

2. The triangular scarf production line according to claim 1, characterized in that: A scrap material separation device is provided between the absorbent transfer device and the absorbent folding device.

3. The triangular scarf production line according to claim 2, characterized in that: The control system includes a PLC main control module, which is connected via fieldbus to the servo drives of the wood pulp unwinding device, the lower layer toilet paper unwinding device, the upper layer toilet paper unwinding device, and the expanded paper / blue cotton unwinding device to achieve multi-axis synchronous unwinding speed control.

4. The triangular scarf production line according to claim 3, characterized in that: The control system is equipped with a visual inspection subsystem, which includes a CCD camera group set between the first flat cutting device and the core wrapping wheel device. The camera group is used to collect core edge alignment data in real time and dynamically adjust the phase offset of the first transfer wheel through a closed-loop control algorithm, with an alignment error ≤0.2mm.

5. The triangular scarf production line according to claim 4, characterized in that: The control system includes a dual negative pressure adsorption collaborative control module. The dual negative pressure adsorption collaborative control module monitors the adsorption force difference between the upper negative pressure adsorption conveying device and the lower negative pressure adsorption conveying device in real time through a pressure sensor. When the difference exceeds a set threshold, the variable frequency fan speed compensation is automatically triggered to ensure the stability of the core transfer.

6. The triangular scarf production line according to any one of claims 3 to 5, characterized in that: The control system integrates a rubber band tension closed-loop control system, which includes a tension sensor and a PID controller installed at the output end of the rubber band unwinding device. The system achieves a continuously adjustable constant tension output within the range of 0.1-5N by adjusting the current of the magnetic powder brake.

7. The triangular scarf production line according to claim 6, characterized in that: The control system is equipped with a fault prediction module. The fault prediction module collects motor current, temperature and vibration spectrum data of the second core molding device and uses an LSTM neural network model to predict the blockage fault of the superabsorbent polymer feed.

8. The triangular scarf production line according to claim 7, characterized in that: The control system includes a multi-level speed matching module. The multi-level speed matching module collects the linear speed of the first core forming device and the second core forming device in real time through an encoder. When the speed difference exceeds 2%, the transmission ratio of the second transfer wheel is automatically adjusted to ensure that the production cycle of the two cores is synchronized.

9. The triangular scarf production line according to claim 8, characterized in that: The control system integrates a remote operation and maintenance interface, which supports the 5G communication protocol and allows remote modification of the ultrasonic welding parameters of the sealing device via a cloud server.

10. The triangular scarf production line according to claim 9, characterized in that: The control system is equipped with a quality traceability subsystem. The quality traceability subsystem assigns a unique ID to each triangular scarf product through RFID tags and associates it with the key process parameters of the first flat cutting device, the circumferential cutting device and the fifth flat cutting device in the production process, so as to realize full-process data traceability.

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