A kind of winding device of automobile battery 3C protective film

Abstract

The utility model discloses a kind of winding devices of automobile battery 3C protective film, including bottom plate, both sides of the bottom plate are connected with side plate, one side of one of the side plate is connected with box, one side of one of the side plate is connected with auxiliary motor, one side of one of the side plate is connected with rotating rod, the rotating rod one end extends to the side of corresponding side plate, the outer wall of auxiliary motor output end and the outer wall one side of rotating rod are connected with gear, two the gear is driven by toothed belt, the rotating rod one end is connected with auxiliary roller, the auxiliary roller one end is rotatably connected with corresponding side plate, guiding roller is rotatably connected between two the side plate, the utility model is driven by the cooperative work of driving mechanism, pressing mechanism and material taking mechanism, realizes the quick automatic combination and separation of driving connection in winding process, the smooth and lossless grabbing transfer of full roll material roll, to achieve efficient, safe and reliable automatic uncoiling operation.

Description

Technical Field

[0001] This utility model relates to the field of battery 3C protective film processing technology, specifically a winding device for automotive battery 3C protective film. Background Technology

[0002] In modern manufacturing, especially in the fields of new energy vehicle batteries and consumer electronics (3C) products, a specialized thin film material called "battery 3C protective film" is widely used. This type of protective film is mainly used for insulating battery cells, isolating and protecting modules, and protecting the surface of critical components. Its performance directly affects the safety and reliability of the battery pack. This type of film is typically coated and slit in roll form, and must ultimately be wound into a tight, neat roll by a winding device to meet the requirements of subsequent automated mounting, storage, and transportation. Therefore, efficient and high-quality winding is an indispensable key process in the production of this high-value film.

[0003] In existing winding equipment, the winding roller is usually rigidly connected and locked to the drive motor spindle through couplings, keyways, and other structures to ensure the stability of transmitting large torques during winding. At the same time, the full roll of material itself is very heavy. After a roll of protective film is wound up, the operator must first manually release the drive locking mechanism before the heavy roll can be laboriously unloaded from the winding shaft and moved away. Similarly, when installing a new empty winding roller, it is also necessary to manually align it and push it to the designated position on the winding shaft before manually performing the locking operation. The whole process is cumbersome, time-consuming, physically demanding, and poses safety hazards. In addition, frequent manual intervention and heavy object handling also increase the risk of the film roll being bumped, scratched, or contaminated, which seriously restricts the roll changeover efficiency of the production line. Utility Model Content

[0004] The purpose of this invention is to provide a winding device for automotive battery 3C protective film to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A winding device for automotive battery 3C protective film includes a base plate, with side plates connected to both sides of the base plate. A housing is connected to one side of one of the side plates, an auxiliary motor is connected to one side of another side plate, and a rotating rod is connected to one side of yet another side plate. One end of the rotating rod extends through to the corresponding side plate. Gears are connected to the outer wall of the output end of the auxiliary motor and the outer wall of the rotating rod. The two gears are driven by a toothed belt. An auxiliary roller is connected to one end of the rotating rod, and one end of the auxiliary roller is rotatably connected to the corresponding side plate. Three sets of guide rollers are rotatably connected between the two side plates. A material support mechanism is connected to one side of each of the two side plates. The material support mechanism includes a support block and a support block. There are two sets of both the support block and the support block. One side of each of the two support blocks is connected to one side of each of the two side plates. Rotating wheels are tumblingly connected to both sides of the upper end of each of the two support blocks. A winding roller is connected to the inner wall of each of the multiple rotating wheels. A drive mechanism is connected to both sides of the outer wall of the winding roller. Each of the two drive mechanisms is connected to a clamping mechanism, and there are two sets of clamping mechanisms. A material taking mechanism is connected to one side of each of the two side plates below the winding roller.

[0006] Preferably, the support block and the support block are arranged in a U-shape. One side of each of the two support blocks is connected to one side of each of the two side plates. There are four sets of rotating wheels. Rotating grooves are opened on both sides of the upper end of each of the two support blocks, corresponding to the lower part of the upper rotating wheel. Each of the multiple rotating grooves is embedded with a roller. The upper ends of the multiple rollers are in rolling contact with the lower part of the corresponding rotating wheel. Two of the rotating wheels and the other two rotating wheels are connected to the outer walls of the winding roller. The winding roller is located on one side of the auxiliary roller.

[0007] Preferably, the driving mechanism includes upper friction wheels, and there are two sets of upper friction wheels. The inner walls of the two upper friction wheels are respectively connected to the outer walls of the take-up roller. The upper friction wheel on the left is located between two of the rotating wheels, and the upper friction wheel on the right is located between the other two rotating wheels. The two upper friction wheels roll above the two support blocks respectively, and a take-up motor is connected to the upper part of one side of the two side plates.

[0008] Preferably, the output ends of the two winding motors extend through to one side of the corresponding side plate. A lower friction wheel is connected to one side of the outer wall of the output end of the winding motor. The upper ends of the two lower friction wheels are respectively located below the two support blocks. An opening is opened at the lower end of the two support blocks corresponding to the two lower friction wheels. The upper ends of the two lower friction wheels are respectively connected inside the two openings. The upper ends of the two lower friction wheels are respectively in contact with the lower ends of the two upper friction wheels.

[0009] Preferably, the pressing mechanism includes a pressing block, and each pressing block has a ball embedded at its lower end. The lower end of the ball is connected to the lower end of the upper friction wheel. An adjusting rod is connected to the middle of one side of the pressing block. The middle of one side of the adjusting rod is rotatably connected to one side of the side plate via a rotating shaft. An mounting block is connected to the upper end of the side plate above the adjusting rod.

[0010] Preferably, the mounting block is inverted in shape, and a first electric telescopic rod is connected to the upper end of the mounting block. The output end of the first electric telescopic rod extends through to the lower end of the mounting block, and the lower end of the first electric telescopic rod is rotatably connected to one side of the upper end of the adjusting rod through a rotating seat.

[0011] Preferably, the material handling mechanism includes two sets of movable slide rails. One side of each of the two movable slide rails is connected to the lower part of one side of each of the two side plates. A slider is slidably connected to the upper end of each of the two movable slide rails. A slide plate is connected to the upper end of each of the two sliders. A second electric telescopic rod is connected to both sides of the upper end of each slide plate. An insert plate is connected to the upper end of each of the two second electric telescopic rods. The insert plate is shaped like a U-shaped structure. Slots are provided on both sides of the upper end of each insert plate. The outer walls of the two take-up rollers are respectively located inside the two slots.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the rice crust cutting device, By coordinating the material support mechanism, drive mechanism, clamping mechanism, and material handling mechanism, during roll changing, only the retraction of the first electric telescopic rod needs to be controlled. The clamping force on the upper friction wheel can be instantly released through the lever principle adjustment rod, so that the drive connection of the take-up roller is automatically and quickly disengaged. Subsequently, the second electric telescopic rod of the material handling mechanism drives the insert plate to rise, using its U-shaped slot to accurately lift both ends of the take-up roller, and the moving slide rail drives it to move it smoothly out of the work station. The entire process does not require manual disassembly of any bolts, couplings, or other fasteners, nor does it require manual handling of heavy full rolls of material, which greatly reduces the labor intensity and safety risks of operators and significantly improves equipment utilization and production efficiency.

[0013] The clamping mechanism employs an electrically driven mechanical structure combined with the lever principle, which can apply controllable clamping force to the friction transmission components. This design enables rapid engagement and disengagement of the drive connection, ensures sufficient torque transmission during operation, and allows for instantaneous release of constraints during roll changes.

[0014] The drive mechanism employs a separate friction drive design, transmitting power through the contact of upper and lower friction wheels. This structure allows for quick disengagement of the drive connection, completely eliminating the disassembly steps required by traditional mechanical connectors and greatly simplifying roll changing operations.

[0015] The material handling mechanism achieves automatic gripping and transfer of a full roll through the coordinated movement of the slide rail and the telescopic rod. The design of the U-shaped insert plate and its slot can accurately lift the journal from both sides of the take-up roller, avoiding the risk of damage to the end face of the roll material by traditional clamps. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model; Figure 2 This is a schematic diagram of the connection structure between the rotating rod and the two side plates of the auxiliary roller box of this utility model; Figure 3 This is a schematic diagram of the connection structure of multiple guide rollers of this utility model; Figure 4This is a schematic diagram of the connection structure between the support block, the upper friction wheel, and the lower friction wheel of this utility model; Figure 5 This is a schematic diagram of the connection structure between the material taking mechanism and the winding roller of this utility model; Figure 6 This is a schematic diagram of the connection structure between the support block, the rotating wheel and the upper friction wheel of this utility model.

[0017] In the diagram: 1. Base plate; 2. Side plate; 3. Box body; 4. Auxiliary motor; 5. Rotating rod; 6. Gear; 7. Toothed belt; 8. Auxiliary roller; 9. Guide roller; 10. Support block; 11. Support block; 12. Support roller; 13. Rotating wheel; 14. Rewinding roller; 15. Rewinding motor; 16. Lower friction wheel; 17. Upper friction wheel; 18. Pressure block; 19. Adjusting rod; 20. First electric telescopic rod; 21. Moving slide rail; 22. Slide plate; 23. Second electric telescopic rod; 24. Insert plate; 25. Slot. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-6 This utility model provides a technical solution: a winding device for a 3C protective film for automotive batteries, comprising a base plate 1, side plates 2 connected to both sides of the base plate 1, a housing 3 connected to one side of one side plate 2, an auxiliary motor 4 connected to one side of another side plate 2, and a rotating rod 5 connected to one side of yet another side plate 2. One end of the rotating rod 5 extends through to the corresponding side plate 2. Gears 6 are connected to the outer wall of the output end of the auxiliary motor 4 and the outer wall of the rotating rod 5, and the two gears 6 are driven by a toothed belt 7. An auxiliary roller 8 is connected to one end of the rotating rod 5, and one end of the auxiliary roller 8 is rotatably connected to the corresponding side plate 2. The two side plates 2 are rotatably connected to each other. There are guide rollers 9, and there are three sets of guide rollers 9. A material support mechanism is connected to one side of the two side plates 2. The material support mechanism includes a support block 10 and a support block 11. There are two sets of support blocks 10 and two support blocks 11. One side of the two support blocks 10 is connected to one side of the two side plates 2 respectively. Rotating wheels 13 are rolledly connected to both sides of the upper end of the two support blocks 11. A winding roller 14 is connected to the inner wall of the multiple rotating wheels 13. A drive mechanism is connected to both sides of the outer wall of the winding roller 14. A pressing mechanism is connected above the two drive mechanisms. There are two sets of pressing mechanisms. A material picking mechanism is connected to one side of the two side plates 2 at the position below the winding roller 14. The base plate 1 provides a stable and reliable installation foundation and structural support for the entire device. The housing 3 encapsulates and protects electrical components such as control circuits and drivers. The auxiliary motor 4 provides power for the precise rotation of the auxiliary roller 8. The rotating rod 5 transmits the torque output by the auxiliary motor 4 and supports the auxiliary roller 8. The gear 6 forms a meshing assembly for synchronous transmission. The guide roller 9 guides and defines the transmission path of the protective film and prevents and eliminates wrinkles in the film during transmission. The material support mechanism supports and positions the take-up roller 14 and provides a low-friction support environment for its rotation. The support block 10 is used when the take-up roller 14 is not working or during roller changing. The process provides initial placement and positioning, while the support block 11 provides core load-bearing and rotational support during operation. The rotating wheel 13 can directly support the take-up roller 14 and provide flexible, low-resistance rolling support when it rotates. The take-up roller 14 is the core functional component that can directly wind and form the protective film roll. The pressing mechanism can provide controllable positive pressure to the upper friction wheel 17 to press the friction pair of the drive mechanism, ensuring the reliability of power transmission and enabling rapid separation during roll changing. After winding is completed, the material handling mechanism automatically or semi-automatically lifts and removes the fully loaded take-up roller 14 from the support position, achieving rapid unloading.

[0020] 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.

[0021] The support block 10 and the support block 11 are arranged in a U-shape. One side of each support block 11 is connected to one side of each of the two side plates 2. There are four sets of rotating wheels 13. Rotating grooves are opened on both sides of the upper end of each of the two support blocks 11, corresponding to the lower part of the upper rotating wheel 13. Rollers 12 are embedded in the multiple rotating grooves. The upper ends of the multiple rollers 12 roll in contact with the lower part of the corresponding rotating wheel 13. Two of the rotating wheels 13 and two other rotating wheels 13 are connected to both sides of the outer wall of the take-up roller 14. The take-up roller 14 is located on one side of the auxiliary roller 8. The driving mechanism includes upper friction wheels 17. There are two sets of upper friction wheels 17. The inner walls of the two upper friction wheels 17 are connected to both sides of the outer wall of the take-up roller 14. The upper friction wheel 17 on the left side is connected to the lower part of the upper friction wheel 14. Friction wheel 17 is located between two rotating wheels 13, and the upper friction wheel 17 on the right is located between the other two rotating wheels 13. The two upper friction wheels 17 roll above the two support blocks 11 respectively. The upper part of one side of the two side plates 2 is connected to a winding motor 15. The output ends of the two winding motors 15 extend through to the corresponding side plate 2. The outer wall of the output end of the winding motor 15 is connected to a lower friction wheel 16. The upper ends of the two lower friction wheels 16 are located below the two support blocks 11 respectively. The lower ends of the two support blocks 11 are opened at the corresponding positions of the two lower friction wheels 16. The upper ends of the two lower friction wheels 16 are connected inside the two openings respectively. The upper ends of the two lower friction wheels 16 are in contact with the lower ends of the two upper friction wheels 17 respectively. The support block 10 and the support block 11 can stably cover and support the take-up roller 14 from the side and below, while providing sufficient guidance and accommodation space for the installation and rolling of the rotating wheel 13 and the take-up roller 14. The rotating wheel 13 is symmetrically arranged at both ends of the take-up roller 14 to jointly distribute and bear the increasing weight of the roll during the winding process, ensuring the stability of the rotation axis of the take-up roller 14. The rotating groove provides precise positioning for the embedded installation of the idler roller 12. The idler roller 12 directly supports the rotating wheel 13 from below and effectively transfers the radial load it receives to the support block 11. At the same time, it can rotate freely to further reduce rotational resistance. The upper friction wheel 17 serves as a driven wheel, used to receive torque from the take-up motor 15 and directly drive the take-up roller 14 to rotate. The take-up motor 15 provides precise and controllable rotational power for the take-up action. The lower friction wheel 16 acts as the driving wheel, and its rotational motion directly drives the upper friction wheel 17 through friction. The opening ensures that the top of the lower friction wheel 16 and the upper friction wheel 17 form an effective contact surface when rotating. When the pressing mechanism applies pressure, sufficient friction is generated between the two to smoothly transmit the torque of the take-up motor 15 to the take-up roller 14.

[0022] The clamping mechanism includes a pressure block 18, with balls embedded at the lower end of each pressure block 18. The lower end of each ball is connected to the lower end of the upper friction wheel 17. An adjusting rod 19 is connected to the middle of one side of the pressure block 18. The middle of one side of the adjusting rod 19 is rotatably connected to one side of the side plate 2 via a rotating shaft. A mounting block is connected to the upper end of the side plate 2 above the adjusting rod 19. The mounting block is in the shape of an inverted L-shape. A first electric telescopic rod 20 is connected to the upper end of the mounting block. The output end of the first electric telescopic rod 20 extends through to the lower end of the mounting block. The lower end of the first electric telescopic rod 20 is rotatably connected to one side of the upper end of the adjusting rod 19 via a rotating seat. The pressure block 18, as an actuator that applies pressure directly downwards, transmits controllable downward pressure to the upper friction wheel 17 below. The ball converts the sliding friction between the pressure block 18 and the upper friction wheel 17 into rolling friction, thereby providing stable downward pressure while allowing the upper friction wheel 17 to rotate freely with low resistance below it, avoiding scratching the wheel surface and reducing power loss. The mounting block provides a stable and fixed mounting base for the first electric telescopic rod 20.

[0023] The material handling mechanism includes two sets of movable slide rails 21. One side of each of the two movable slide rails 21 is connected to the lower part of one side of each of the two side plates 2. The upper ends of the two movable slide rails 21 are slidably connected to sliders. The upper ends of the two sliders are connected to slide plates 22. The upper ends of the slide plates 22 are connected to the two sides of the upper end of the slide plates 22. The upper ends of the two second electric telescopic rods 23 are connected to insert plates 24. The insert plates 24 are U-shaped. The upper ends of the insert plates 24 are provided with slots 25 on both sides. The outer walls of the two take-up rollers 14 are located inside the two slots 25 respectively. The movable slide rail 21 provides precise linear guidance for the material picking action, ensuring that the fully loaded take-up roller 14 can be smoothly and horizontally moved into and out of the take-up station. The second electric telescopic rod 23 serves as the vertical drive source of the material picking mechanism, driving the insert plate 24 to perform precise lifting and lowering actions to lift and lower the take-up roller 14. The insert plate 24 can effectively cover and stabilize the take-up roller 14, can extend from below the take-up roller 14, and after rising, it uses its inner side to restrict the lateral movement of the take-up roller 14 to achieve a stable grip. The slot 25 precisely accommodates and supports the journals or specific flanges at both ends of the take-up roller 14, providing a reliable force point for the transfer process and preventing the take-up roller 14 from rolling or slipping during movement.

[0024] Working principle: The operator or automatic feeding mechanism places the empty take-up roller 14 between the four sets of rotating wheels 13 on the upper end of the two support blocks 11. The rotating wheels 13 can roll freely on the support blocks 11, while the idler rollers 12 provide stable rolling support for the rotating wheels 13 from below, together forming a low-friction support track.

[0025] Once the take-up roller 14 is in place, the upper friction wheels 17 on both sides of its outer wall are positioned directly above the opening of the support block 11. The take-up motor 15 is started, and its output drives the lower friction wheel 16 to rotate. Subsequently, the two sets of pressing mechanisms are controlled to operate: the first electric telescopic rod 20 retracts, pushing the adjusting rod 19 to rotate upwards with its hinge point with the side plate 2 as the axis, thereby forcing the pressure block 18 to move downwards. The balls at the lower end of the pressure block 18 steadily press the upper friction wheel 17 against the lower friction wheel 16. By adjusting the stroke of the first electric telescopic rod 20, the positive pressure between the upper friction wheel 17 and the lower friction wheel 16 can be precisely controlled. Under sufficient positive pressure, the rotational power of the lower friction wheel 16 is efficiently transmitted to the upper friction wheel 17 through friction, thereby driving the take-up roller 14 to start rotating.

[0026] The battery 3C protective film is drawn from the upstream equipment, passes through three sets of guide rollers 9 for flattening and path guidance, and then passes through the auxiliary roller 8. The auxiliary motor 4 drives the rotating rod 5 and the auxiliary roller 8 to rotate at a linear speed matching the main winding speed through the gear 6 and toothed belt 7, which plays a final tensioning and stabilizing role on the film. The film is finally wound on the rotating winding roller 14 with a set tension to form a neat roll. During the entire winding process, the low-resistance support system composed of the rotating wheel 13 and the support roller 12 ensures that the winding roller 14 can still rotate smoothly when bearing increasingly larger roll weights.

[0027] When the winding reaches the predetermined length or diameter, the winding motor 15 is stopped first. Then, the first electric telescopic rod 20 is controlled to retract, and the pressure block 18 is pulled up by the adjusting rod 19, thereby releasing the pressure on the upper friction wheel 17 and allowing the staff to disconnect the battery 3C protection film.

[0028] Next, the material handling mechanism starts working: the two second electric telescopic rods 23 rise synchronously, pushing the insert plate 24 upward, so that the slots 25 on both sides of it are precisely inserted into and support the underside of the journals at both ends of the take-up roller 14. Then, the slide plate 22 slides laterally on the moving slide rail 21, smoothly moving the entire take-up roller 14 carrying the full roll of material out of the station between the two support blocks 11 and placing it above the two support blocks 10. After the full roll is transported away, a new empty take-up roller 14 can be placed in the station. Repeat the above steps to start a new round of take-up and achieve rapid roll change.

Claims

1. A winding device for automotive battery 3C protective film, comprising a base plate (1), characterized in that: The base plate (1) is connected to two side plates (2) on both sides. One side plate (2) is connected to a box body (3) on one side. One side plate (2) is connected to an auxiliary motor (4) on one side. One side plate (2) is connected to a rotating rod (5) on one side. One end of the rotating rod (5) extends through to the corresponding side plate (2). The outer wall of the output end of the auxiliary motor (4) and the outer wall of the rotating rod (5) are both connected to gears (6). The two gears (6) are driven by a toothed belt (7). One end of the rotating rod (5) is connected to an auxiliary roller (8). One end of the auxiliary roller (8) is rotatably connected to the corresponding side plate (2). The two side plates (2) are rotatably connected to a guide roller (9). There are three sets of guide rollers (9). The two side plates (2) are connected to a material support mechanism on one side. The material support mechanism includes a support block (10) and a support block (11). There are two sets of both the support block (10) and the support block (11). One side of each of the two support blocks (10) is connected to one side of each of the two side plates (2). Rotating wheels (13) are rolled on both sides of the upper end of each of the two support blocks (11). A winding roller (14) is connected to the inner wall of the multiple rotating wheels (13). A drive mechanism is connected to both sides of the outer wall of the winding roller (14). A pressing mechanism is connected above each of the two drive mechanisms. There are two sets of pressing mechanisms. A material taking mechanism is connected to one side of each of the two side plates (2) below the winding roller (14).

2. The winding device for a 3C protective film for automotive batteries according to claim 1, characterized in that: The support block (10) and the support block (11) are arranged in a U-shape. One side of each of the two support blocks (11) is connected to one side of each of the two side plates (2). There are four sets of rotating wheels (13). Rotating grooves are opened on both sides of the upper end of each of the two support blocks (11) corresponding to the lower part of the rotating wheel (13). Rollers (12) are embedded in the multiple rotating grooves. The upper ends of the multiple rollers (12) are in rolling contact with the lower part of the corresponding rotating wheel (13). Two of the rotating wheels (13) and the other two rotating wheels (13) are connected to the outer sides of the winding roller (14). The winding roller (14) is located on one side of the auxiliary roller (8).

3. The winding device for a 3C protective film for automotive batteries according to claim 1, characterized in that: The drive mechanism includes an upper friction wheel (17), and there are two sets of upper friction wheels (17). The inner walls of the two upper friction wheels (17) are respectively connected to the outer walls of the take-up roller (14). The upper friction wheel (17) on the left is located between two rotating wheels (13), and the upper friction wheel (17) on the right is located between the other two rotating wheels (13). The two upper friction wheels (17) roll above the two support blocks (11) respectively. A take-up motor (15) is connected to the upper part of one side of the two side plates (2).

4. The winding device for a 3C protective film for automotive batteries according to claim 3, characterized in that: The output ends of the two winding motors (15) extend through to one side of the corresponding side plate (2). The outer wall of the output end of the winding motor (15) is connected to a lower friction wheel (16). The upper ends of the two lower friction wheels (16) are respectively located below the two support blocks (11). The lower ends of the two support blocks (11) are respectively provided with openings at the two lower friction wheels (16). The upper ends of the two lower friction wheels (16) are respectively connected inside the two openings. The upper ends of the two lower friction wheels (16) are respectively in contact with the lower ends of the two upper friction wheels (17).

5. The winding device for a 3C protective film for automotive batteries according to claim 1, characterized in that: The pressing mechanism includes a pressing block (18), and each pressing block (18) has a ball embedded at its lower end. The lower end of the ball is connected to the lower end of the upper friction wheel (17). An adjusting rod (19) is connected to the middle of one side of the pressing block (18). The middle of one side of the adjusting rod (19) is rotatably connected to one side of the side plate (2) via a rotating shaft. An mounting block is connected to the upper end of the side plate (2) above the adjusting rod (19).

6. The winding device for a 3C protective film for automotive batteries according to claim 5, characterized in that: The mounting block is in the shape of an inverted L-shape. The upper end of the mounting block is connected to a first electric telescopic rod (20). The output end of the first electric telescopic rod (20) extends through to the lower end of the mounting block. The lower end of the first electric telescopic rod (20) is rotatably connected to one side of the upper end of the adjusting rod (19) through a rotating seat.

7. The winding device for a 3C protective film for automotive batteries according to claim 1, characterized in that: The material handling mechanism includes a movable slide rail (21), and there are two sets of movable slide rails (21). One side of the two movable slide rails (21) is connected to the lower part of one side of the two side plates (2). The upper ends of the two movable slide rails (21) are slidably connected to sliders. The upper ends of the two sliders are connected to slide plates (22). The upper ends of the slide plates (22) are connected to the two sides of the upper end of the slide plates (22). The upper ends of the two second electric telescopic rods (23) are connected to insert plates (24). The insert plates (24) are U-shaped. The upper ends of the insert plates (24) are provided with slots (25). The outer walls of the two take-up rollers (14) are located inside the two slots (25).

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