Self-adaptive tension automatic winding drum trimming device

Abstract

The utility model relates to the related technical field of trimming devices, in particular to a self-adaptive tension automatic winding drum trimming device which comprises a support, and a trimming mechanism is arranged above a baffle. According to the self-adaptive tension automatic winding drum trimming device, when a material is unwound from the unwinding drum, a tension sensor monitors the tension of the material in real time, once deviation exists between the tension and a preset value, a signal is fed back to a control system, a first motor is started, a lifting block is driven by a threaded rod to move up and down in an adjusting groove, the height of a tension roller is adjusted, and accurate tension adjustment is achieved; when trimming is needed, a second motor drives a rotating shaft and a transmission shaft to rotate at a high speed and drives a trimming knife to cut the edge of the material, in the trimming process, a sliding block is matched with a sliding groove, the position of the trimming knife is finely adjusted according to the characteristics of the material, a positioning system composed of a spring, a clamping block and the like locks the position, an auxiliary roller supports and guides the material, and deviation and wrinkles are avoided. All parts of the trimming mechanism cooperate, efficient and accurate trimming is achieved, and materials with tidy edges are provided for the winding drum.

Description

Technical Field

[0001] This utility model relates to the technical field of trimming devices, and in particular to an adaptive tension automatic roll trimming device. Background Technology

[0002] Edge trimming devices are used to process the edges of various materials to meet specific quality and specification requirements. In industrial production, edge trimming devices are widely used across multiple industries. In the plastics industry, after plastic products are molded, their edges often have excess burrs and flash. Edge trimming devices precisely remove these excess parts through mechanical cutting, stamping, or laser processing, making the edges of plastic products smooth, neat, and conforming to product design standards. For example, in the production of plastic toys, edge trimming prevents children from being scratched by sharp edges during use. In the metal processing industry, after metal sheets are cut and stamped, the edges may have unevenness... For issues such as oxide layers, trimming devices can perform operations such as grinding and deburring on these edges, improving the appearance quality and subsequent processing performance of metal products. For example, in the production of automotive parts, precise trimming can ensure the assembly accuracy of parts. In the textile industry, after the production or cutting of fabric, the edges are prone to problems such as loose threads and unevenness. Trimming devices can treat the edges of fabrics through sewing, heat sealing, etc., to prevent the fabric from coming loose and to make the edges more beautiful and strong. In garment production, trimmed fabrics can be better sewn. Therefore, in order to improve production efficiency and automation, there is a particular need for an adaptive tension automatic roll trimming device.

[0003] However, the traditional trimming and winding process may require frequent manual intervention to adjust the tension and check the edge quality. This manual operation is not only inefficient, but also prone to human error. At the same time, inaccurate winding and trimming processes may lead to material waste. If the tension is not properly controlled, the material may wrinkle, tear, or other problems. Utility Model Content

[0004] The purpose of this invention is to provide an adaptive tension automatic roll trimming device to solve the problem of the existing adaptive tension automatic roll trimming device mentioned in the background art. However, the traditional trimming and winding process may require frequent manual intervention to adjust the tension and check the edge quality. This manual operation is not only inefficient, but also prone to human error. At the same time, inaccurate winding and trimming processes may lead to material waste. If the tension is not properly controlled, the material may wrinkle, tear, etc.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adaptive tension automatic roll trimming device, comprising a support, a support leg installed at the bottom of the support, a foot pad fixedly connected to the bottom of the support leg, a baffle fixedly connected to the inner side of the support, a unwinding roll installed on the inner side of the baffle, a tension adjusting mechanism provided on the inner side of the baffle, a pressure roller installed on the inner side of the baffle, a trimming mechanism provided above the baffle, and a take-up roll installed on the inner side of one end of the baffle;

[0006] The trimming mechanism includes a fixed base, a motor housing, a second motor, a rotating shaft, a transmission shaft, a trimming knife, a sliding groove, a slider, a telescopic groove, a spring, a limiting plate, a locking block, a positioning hole, and an auxiliary roller. A fixed base is fixedly connected to the top of the baffle, and a motor housing is also fixedly connected to the top of the baffle. A second motor is installed inside the motor housing. A rotating shaft is fixedly connected to the output end of the second motor. A transmission shaft is fixedly connected to one end of the rotating shaft. A trimming knife is installed above the transmission shaft. Sliding grooves are formed on both the upper and lower sides of the transmission shaft. A slider is fixedly connected to the inner side of the trimming knife. A telescopic groove is formed inside the slider. A spring is fixedly connected to one end of the telescopic groove. A limiting plate is fixedly connected to one end of the spring. A locking block is fixedly connected to one end of the limiting plate. A positioning hole is formed inside the sliding groove. An auxiliary roller is installed inside the fixed base.

[0007] Preferably, the support legs are located at the four corners of the bottom of the support, and the foot pads are provided in four identical sets, all distributed at the bottom of each set of support legs.

[0008] Preferably, the tension adjustment mechanism includes a tension sensor, an adjustment groove, a motor groove, a first motor, a threaded rod, a limit rod, a lifting block, and a tension roller. The tension sensor is installed on the inner side of the baffle, the adjustment groove is formed on the inner side of the baffle, the motor groove is formed above the adjustment groove, the first motor is installed inside the motor groove, the output end of the first motor is fixedly connected to the threaded rod, the limit rod is fixedly connected inside the adjustment groove, the lifting block is slidably connected to the surfaces of the threaded rod and the limit rod, and the tension roller is fixedly connected to the inner end of the lifting block.

[0009] Preferably, the adjusting groove is provided in two sets on the inner side of the baffle, one set of adjusting grooves is rotatably connected to a threaded rod, and the other set of adjusting grooves is fixedly connected to a limit rod.

[0010] Preferably, the lifting block slides up and down in the adjusting groove via a threaded rod, and the outer wall dimension of the lifting block matches the inner wall dimension of the adjusting groove.

[0011] Preferably, the rotating shaft is driven to rotate by a second motor, and multiple sets of trimming blades are arranged above the drive shaft.

[0012] Preferably, the position of the slider corresponds to the position of the slide groove, and the outer wall size of the slider matches the inner wall size of the slide groove. Multiple sets of positioning holes are equally spaced inside the slide groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This adaptive tension automatic roll trimming device, through the setting of a tension adjustment mechanism and a trimming mechanism, when the material is released from the unwinding drum and transmitted to the trimming mechanism via the tension roller, the tension sensor begins to monitor the tension of the material in real time. Once a deviation is detected between the actual tension of the material and the preset optimal tension value, the signal is quickly fed back to the control system, which then starts the first motor. The output end of the first motor drives the threaded rod to rotate. Since the lifting block is threadedly connected to the threaded rod and simultaneously slides on the limit rod, when the threaded rod rotates, the lifting block will move up and down linearly along the adjustment groove. If the material tension is too high... The first motor reverses, causing the threaded rod to lift the lifting block, thereby raising the position of the tension roller. This increases the relaxation of the material and correspondingly reduces the tension. Conversely, if the material tension is too low, the first motor rotates forward, driving the threaded rod to lower the lifting block, reducing the position of the tension roller and increasing the stretching of the material, thus increasing the tension. The limit rod plays a crucial guiding and limiting role in this process, ensuring stable and linear movement of the lifting block and preventing inaccurate tension adjustment due to swaying. Through this real-time and precise adjustment process, the tension adjustment mechanism keeps the material in an optimal tension state, ensuring stability during material transport and preventing problems such as wrinkles and breakage. When edge trimming is required... The second motor is powered on, outputting power to the rotating shaft. The rotating shaft drives the connected transmission shaft to rotate at high speed. At this time, the trimming knife mounted above the transmission shaft rotates at high speed, cutting and trimming the edges of the material conveyed from the unwinding drum via the pressure roller. During the trimming process, the slider on the inner side of the trimming knife closely cooperates with the groove on the transmission shaft, ensuring that the trimming knife can stably follow the rotation of the transmission shaft. At the same time, when there are slight differences in the thickness, hardness, etc. of the material edge, the slider can slide to a certain extent in the groove to adjust the position of the trimming knife, ensuring the accuracy and stability of the cutting. The telescopic groove, spring, limit plate, and locking block together constitute an adjustable positioning system. When the slider is in... When the slider slides to the appropriate position in the chute, the limiting plate pushes the locking block into the positioning hole opened inside the chute under the elastic force of the spring, fixing the slider in that position. This keeps the trimming knife in the optimal working position, preventing positional displacement caused by vibration or material fluctuation. The auxiliary roller inside the fixed seat plays a supporting and guiding role for the material. It works in conjunction with the trimming knife to ensure that the material is always in a stable conveying state during the cutting process, preventing the material from shifting or wrinkling due to uneven force, and ensuring the quality and accuracy of the trimming. The entire trimming mechanism completes the trimming of the material efficiently and accurately through the coordinated operation of its components, providing neatly edged material for the subsequent winding of the take-up drum. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the left side view of the appearance of this utility model;

[0015] Figure 2 This is a schematic diagram of the right side view of the appearance of this utility model;

[0016] Figure 3 This is a schematic diagram of the tension adjustment mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the trimming mechanism of this utility model;

[0018] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0019] Figure 6 This utility model Figure 4 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Support; 2. Support leg; 3. Foot pad; 4. Baffle; 5. Unwinding drum; 6. Tension adjustment mechanism; 601. Tension sensor; 602. Adjustment groove; 603. Motor groove; 604. First motor; 605. Threaded rod; 606. Limiting rod; 607. Lifting block; 608. Tension roller; 7. Pressure roller; 8. Trimming mechanism; 801. Fixed base; 802. Motor housing; 803. Second motor; 804. Rotating shaft; 805. Transmission shaft; 806. Trimming knife; 807. Slide groove; 808. Slider; 809. Telescopic groove; 810. Spring; 811. Limiting plate; 812. Locking block; 813. Positioning hole; 814. Auxiliary roller; 9. Rewinding drum. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-6 This utility model provides a technical solution: an adaptive tension automatic roll trimming device, including a support 1, a support leg 2 installed at the bottom of the support 1, a foot pad 3 fixedly connected to the bottom of the support leg 2, a baffle 4 fixedly connected to the inner side of the support 1, a roll unwinding drum 5 installed on the inner side of the baffle 4, a tension adjusting mechanism 6 provided on the inner side of the baffle 4, a pressure roller 7 installed on the inner side of the baffle 4, a trimming mechanism 8 provided above the baffle 4, and a roll rewinding drum 9 installed on the inner side of one end of the baffle 4;

[0023] The trimming mechanism 8 includes a fixed base 801, a motor housing 802, a second motor 803, a rotating shaft 804, a transmission shaft 805, a trimming knife 806, a sliding groove 807, a slider 808, a telescopic groove 809, a spring 810, a limiting plate 811, a locking block 812, a positioning hole 813, and an auxiliary roller 814. The fixed base 801 is fixedly connected to the top of the baffle 4, and the motor housing 802 is also fixedly connected to the top of the baffle 4. The second motor 803 is installed inside the motor housing 802. The output end of the second motor 803 is fixedly connected to the rotating shaft 804, and one end of the rotating shaft 804 is fixedly connected to the transmission shaft 805. The trimming knife 806 is installed above the transmission shaft 805. The transmission shaft 805 has openings on both its upper and lower sides. The trimming mechanism 8 has a sliding groove 807. A slider 808 is fixedly connected to the inner side of the trimming blade 806. An extension groove 809 is provided inside the slider 808. A spring 810 is fixedly connected to one end of the extension groove 809. A limit plate 811 is fixedly connected to one end of the spring 810. A locking block 812 is fixedly connected to one end of the limit plate 811. A positioning hole 813 is provided inside the sliding groove 807. An auxiliary roller 814 is installed inside the fixed base 801. Through the trimming mechanism 8, the second motor 803 is energized and outputs power to the rotating shaft 804. The rotating shaft 804 drives the connected transmission shaft 805 to rotate at high speed. At this time, the trimming blade 806, mounted above the transmission shaft 805, rotates at high speed, trimming the blade from the ground. The material edge conveyed by the roller 5 and pressure roller 7 is cut and trimmed. During the trimming process, the slider 808 on the inner side of the trimming knife 806 closely cooperates with the groove 807 on the drive shaft 805 to ensure that the trimming knife 806 can stably follow the rotation of the drive shaft 805. At the same time, when there are slight differences in the thickness, hardness, etc. of the material edge, the slider 808 can slide to a certain extent in the groove 807 to adjust the position of the trimming knife 806, ensuring the accuracy and stability of the cutting. The telescopic groove 809, spring 810, limit plate 811 and locking block 812 together constitute an adjustable positioning system. When the slider 808 slides to the appropriate position in the groove 807, under the elastic force of the spring 810, The limiting plate 811 pushes the locking block 812 into the positioning hole 813 opened inside the slide groove 807, fixing the slider 808 in this position, so that the trimming knife 806 is kept in the optimal working position, avoiding positional displacement caused by vibration or material fluctuation. The auxiliary roller 814 inside the fixed seat 801 plays the role of auxiliary support and guiding the material. It works together with the trimming knife 806 to ensure that the material is always in a stable conveying state during the cutting process, preventing the material from shifting or wrinkling due to uneven force, and ensuring the quality and accuracy of the trimming. The entire trimming mechanism 8 completes the trimming of the material efficiently and accurately through the coordinated operation of each component, providing material with neat edges for the subsequent winding of the take-up drum 9.

[0024] Furthermore, the support legs 2 are located at the four corners of the bottom of the support 1, and the foot pads 3 are provided in four identical sets, all distributed at the bottom of each set of support legs 2. The foot pads 3 play many important roles in the entire adaptive tension automatic roll trimming device. First, the foot pads 3 can effectively increase the contact area between the device and the ground, thereby dispersing the pressure generated by the device itself and during operation, preventing damage to the ground due to pressure concentration. Especially on some relatively fragile ground materials, such as wooden floors or soft cement floors, this function of the foot pads 3 can play a very good protective role.

[0025] Furthermore, the tension adjustment mechanism 6 includes a tension sensor 601, an adjustment groove 602, a motor groove 603, a first motor 604, a threaded rod 605, a limit rod 606, a lifting block 607, and a tension roller 608. The tension sensor 601 is installed on the inner side of the baffle 4, and the adjustment groove 602 is formed on the inner side of the baffle 4. The motor groove 603 is formed above the adjustment groove 602, and the first motor 604 is installed inside the motor groove 603. The output end of the first motor 604 is fixedly connected to the threaded rod 605, and the limit rod 606 is fixedly connected inside the adjustment groove 602. Lifting blocks 607 are slidably connected to the surfaces of both the threaded rod 605 and the limiting rod 606. A tension roller 608 is fixedly connected to the inner end of the lifting block 607. Through the tension adjustment mechanism 6, when material is released from the unwinding drum 5 and transmitted to the trimming mechanism 8 via the tension roller 608, the tension sensor 601 begins to monitor the material's tension in real time. Once a deviation is detected between the actual tension of the material and the preset optimal tension value, the signal is quickly fed back to the control system. The control system then starts the first motor 604, whose output drives the threaded rod 605 to... Rotation occurs because the lifting block 607 is threadedly connected to the threaded rod 605 and simultaneously slides on the limiting rod 606. When the threaded rod 605 rotates, the lifting block 607 moves vertically up and down along the adjusting groove 602. If the material tension is too high, the first motor 604 reverses, causing the threaded rod 605 to drive the lifting block 607 upward, thereby raising the position of the tension roller 608. This increases the relaxation of the material and reduces the tension accordingly. Conversely, if the material tension is too low, the first motor 604 rotates forward, and the threaded rod 605 drives the lifting block 607 downward, lowering the position of the tension roller 608 and thus reducing the tension on the material. The increased stretching leads to increased tension. The limiting rod 606 plays a crucial guiding and limiting role in this process, ensuring the stable and linear movement of the lifting block 607 and preventing inaccurate tension adjustment due to shaking. Through this real-time and precise adjustment process, the tension adjustment mechanism 6 keeps the material in the optimal tension state at all times. This not only ensures the stability of the material during the transmission process and prevents problems such as wrinkles and breakage, but also provides a stable material input for the trimming mechanism 8, ensuring the high-quality completion of the trimming work and creating favorable conditions for the smooth winding of the subsequent winding drum 9.

[0026] Furthermore, two sets of adjustment grooves 602 are provided on the inner side of the baffle 4. One set of adjustment grooves 602 is rotatably connected to a threaded rod 605, and the other set of adjustment grooves 602 is fixedly connected to a limit rod 606. Through the setting of adjustment grooves 602, a stable and efficient adjustment framework is constructed for the tension adjustment mechanism 6. The two sets of adjustment grooves 602 cooperate with each other, so that the threaded rod 605 and the limit rod 606 can be reasonably arranged, providing precise guidance for the movement of the lifting block 607. When the first motor 604 drives the threaded rod 605 to rotate, the adjustment groove 602 where the limit rod 606 is located can effectively limit the movement trajectory of the lifting block 607, preventing it from deviating or shaking during the adjustment process, ensuring that the tension roller 608 can adjust its height smoothly and accurately, thereby achieving precise control of material tension.

[0027] Furthermore, the lifting block 607 slides up and down within the adjusting groove 602 via the threaded rod 605. The outer wall dimensions of the lifting block 607 match the inner wall dimensions of the adjusting groove 602. Through the arrangement of the adjusting groove 602, the threaded rod 605, and the lifting block 607, highly precise tension adjustment is achieved. The closely fitting dimensions ensure the stability and accuracy of the lifting block 607 when sliding within the adjusting groove 602, avoiding motion deviations caused by excessive gaps. The precise conversion between the rotation of the threaded rod 605 and the linear motion of the lifting block 607 allows the tension roller 608 to respond quickly and accurately to changes in material tension. Whether dealing with small fluctuations or large changes in material tension, this structure ensures the timeliness and reliability of tension adjustment, providing a solid guarantee for the stable operation of the entire trimming device.

[0028] Furthermore, the rotating shaft 804 drives the transmission shaft 805 to rotate via the second motor 803. Multiple sets of trimming blades 806 are arranged above the transmission shaft 805. The arrangement of the trimming blades 806 significantly improves the efficiency and quality of the trimming work. Multiple sets of trimming blades 806 work simultaneously, enabling the cutting and trimming of multiple parts of the material at one time, greatly shortening the processing time and improving production efficiency. Moreover, even if one set of trimming blades 806 wears out or malfunctions during the trimming process, the other sets can continue to work, ensuring the continuity of the trimming work. At the same time, the arrangement of multiple sets of trimming blades 806 can also flexibly adjust the number and position of the trimming blades involved in the work according to different material widths and trimming requirements, achieving efficient trimming of materials of various specifications.

[0029] Furthermore, the position of the slider 808 corresponds to the position of the groove 807, and the outer wall size of the slider 808 matches the inner wall size of the groove 807. Multiple sets of positioning holes 813 are equally spaced inside the groove 807. Through the arrangement of the groove 807, slider 808, and positioning holes 813, the trimming knife 806 is given a high degree of flexibility and adjustability. The tight fit of the slider 808 in the groove 807 allows the trimming knife 806 to rotate stably and at high speed on the drive shaft 805. At the same time, according to the characteristics of the material and the trimming requirements, the slider 808 can slide to different positions in the groove 807. By embedding the locking block 812 into the positioning holes 813 at different positions, the position of the trimming knife 806 can be precisely locked. In this way, the trimming knife 806 can quickly adapt to materials of different thicknesses and hardnesses, adjust to the optimal cutting angle and position, ensure the accuracy and stability of the trimming work, and meet the diverse trimming operation requirements.

[0030] Working Principle: When the entire adaptive tension automatic roll trimming device is powered on, the unwinding drum 5 starts operating first, slowly releasing the rolled material to be processed. Under its own gravity and subsequent traction, the material enters the area controlled by the tension adjustment mechanism 6. The tension sensor 601 acts like a sensitive "sensor," constantly monitoring the tension of the material. Once the tension deviates from the preset value, the control system responds immediately, directing the first motor 604 to operate. Through the cooperation of the threaded rod 605 and the lifting block 607, the height of the tension roller 608 is precisely adjusted, achieving real-time dynamic control of the material tension. This ensures that the material is always delivered to the trimming mechanism 8 with the optimal tension. After the material successfully passes through the tension adjustment mechanism, it arrives at the trimming mechanism 8. At this time, the second motor 803 drives the rotating shaft 804 and the transmission shaft 805 to rotate at high speed, driving multiple sets of trimming blades 806 to rotate rapidly, efficiently cutting and trimming the edges of the material. During the cutting process, the slider 808 and the groove 807 work closely together, finely adjusting the trimming blades 806 according to the material characteristics. At position 6, the locking block 812 and positioning hole 813 work together to lock and ensure the cutting position of the trimming knife 806 is stable and accurate. The auxiliary roller 814 supports and guides the material, ensuring its stability during cutting, avoiding wrinkles and deviation, and cutting a neat edge. The trimmed material is then conveyed to the take-up drum 9 with the assistance of the pressure roller 7. The take-up drum 9 rotates continuously, tightly and neatly winding the trimmed material. Throughout the process, the foot pads 3 ensure the stable placement of the equipment, preventing ground damage and equipment displacement. All mechanisms and components work closely together and coordinate to complete the trimming and winding of various materials in one go, from unwinding the material, tension adjustment, trimming to winding, which greatly improves production efficiency and product quality and meets the stringent requirements for material processing in different industrial production scenarios. The first motor 604 is model Y315S-2 and the second motor 803 is model Y315S-2. This completes the use of an adaptive tension automatic roll trimming device.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic self-tensioning reel trimming device, comprising a support (1), characterized in that: The bottom of the support (1) is provided with a supporting leg (2), the bottom of the supporting leg (2) is fixedly connected with a foot pad (3), the inner side of the support (1) is fixedly connected with a baffle (4), the inner side of the baffle (4) is provided with a unwinding drum (5), the inner side of the baffle (4) is provided with a tension adjusting mechanism (6), the inner side of the baffle (4) is provided with a compression roller (7), the upper side of the baffle (4) is provided with an edge trimming mechanism (8), and the inner side of one end of the baffle (4) is provided with a winding drum (9). The edge trimming mechanism (8) comprises a fixing seat (801), a motor shell (802), a second motor (803), a rotating shaft (804), a transmission shaft (805), an edge trimming knife (806), a sliding groove (807), a sliding block (808), an expansion slot (809), a spring (810), a limiting plate (811), a clamping block (812), a positioning hole (813) and an auxiliary roller (814), the upper side of the baffle (4) is fixedly connected with the fixing seat (801), the upper side of the baffle (4) is fixedly connected with the motor shell (802), the inside of the motor shell (802) is provided with the second motor (803), the output end of the second motor (803) is fixedly connected with the rotating shaft (804), one end of the rotating shaft (804) is fixedly connected with the transmission shaft (805), the upper side of the transmission shaft (805) is provided with the edge trimming knife (806), the upper and lower sides of the transmission shaft (805) are both provided with the sliding groove (807), the inner side of the edge trimming knife (806) is fixedly connected with the sliding block (808), the inside of the sliding block (808) is provided with the expansion slot (809), one end of the inside of the expansion slot (809) is fixedly connected with the spring (810), one end of the spring (810) is fixedly connected with the limiting plate (811), one end of the limiting plate (811) is fixedly connected with the clamping block (812), the inner side of the sliding groove (807) is provided with the positioning hole (813), and the inside of the fixing seat (801) is provided with the auxiliary roller (814).

2. An automatic self-tensioning reel edging device according to claim 1, characterized in that: The supporting leg (2) is arranged at the four corners of the bottom of the support (1), the foot pad (3) is provided with four groups of the same, and is distributed at the bottom of each supporting leg (2).

3. An automatic self-tensioning reel edging device according to claim 1, characterized in that: The tension adjusting mechanism (6) comprises a tension sensor (601), an adjusting groove (602), a motor groove (603), a first motor (604), a threaded rod (605), a limiting rod (606), a lifting block (607) and a tension roller (608), the inner side of the baffle (4) is provided with the tension sensor (601), the inner side of the baffle (4) is provided with the adjusting groove (602), the upper portion of the adjusting groove (602) is provided with the motor groove (603), the inner portion of the motor groove (603) is provided with the first motor (604), the output end of the first motor (604) is fixedly connected with the threaded rod (605), the inner portion of the adjusting groove (602) is fixedly connected with the limiting rod (606), the surfaces of the threaded rod (605) and the limiting rod (606) are slidably connected with the lifting block (607), and the inner end of the lifting block (607) is fixedly connected with the tension roller (608).

4. An automatic self-tensioning reel edging device according to claim 3, wherein: The inner portions of two groups of the adjusting grooves (602) are provided on the inner side of the baffle (4), one group of the adjusting grooves (602) is rotatably connected with the threaded rod (605), and the other group of the adjusting grooves (602) is fixedly connected with the limiting rod (606).

5. An automatic self-tensioning reel edging device according to claim 3, wherein: The lifting block (607) slides up and down in the adjusting groove (602) through the threaded rod (605), and the outer wall size of the lifting block (607) is consistent with the inner wall size of the adjusting groove (602).

6. An automatic self-tensioning reel edging device according to claim 1, wherein: The rotating shaft (804) drives the transmission shaft (805) to rotate through the second motor (803), and the trimming cutter (806) is provided with a plurality of groups above the transmission shaft (805).

7. An automatic self-tensioning reel edging device according to claim 1, wherein: The position of the sliding block (808) corresponds to the position of the sliding groove (807), and the outer wall size of the sliding block (808) is consistent with the inner wall size of the sliding groove (807), and a plurality of groups of positioning holes (813) are equidistantly arranged in the inner portion of the sliding groove (807).

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