A protective film traction and cutting device

Abstract

The present invention discloses a protective film traction and cutting device, comprising a first frame, a second frame, a transition traction device, a tension holding device, and a cutting device arranged on the first frame from back to front, and an active traction device arranged between the first frame and the second frame, wherein the transition traction device is used to form a traction tension on the protective film; the active traction device is used to pull the protective film forward to unfold; the tension holding device is used to press the protective film before cutting to maintain the traction tension on the transition traction device; the cutting device is used to cut the protective film. The protective film traction and cutting device can be applied to protective film rolls of different widths, automatically cut the protective film rolls into packaging lengths of different sizes, so that the protective film can be packaged corresponding to different types of finished film rolls, thereby improving the automation level of finished film roll packaging, reducing the labor intensity of workers, and improving packaging efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of plastic film coil packaging, in particular to a protective film pulling and cutting device. Background Art

[0002] In the processing and production of plastic film, in order to protect the finished film roll from damage during transportation, a protective film, such as bubble film, is generally put on the outer surface of the finished film roll. Currently, it is mainly done by manually cutting a section of protective film and then wrapping the finished film roll. Due to the large production volume and the large changes in the diameter and width of the roll, manual cutting of the protective film is time-consuming and labor-intensive, and the work efficiency is low.

[0003] Therefore, there is an urgent need for a protective film traction and cutting device, which can unfold the protective film roll under the action of traction force and automatically cut the protective film into a predetermined size, thereby improving the packaging efficiency of the finished film roll and reducing the labor intensity of workers. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a protective film traction and cutting device, which aims to automatically cut the protective film into a predetermined size, thereby improving the packaging efficiency of the finished film roll and reducing the labor intensity of workers.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A protective film traction and cutting device comprises a first frame, a second frame, a transition traction device, a tension holding device, a cutting device arranged on the first frame from back to front, and an active traction device arranged between the first frame and the second frame, wherein the transition traction device is used to form traction tension on the protective film; the active traction device is used to pull the protective film forward to unfold; the tension holding device is used to press the protective film before cutting to maintain the traction tension on the transition traction device; and the cutting device is used to cut the protective film.

[0007] The transition traction device includes a first bracket, a first transition traction assembly, a second transition traction roller, and a tension roller assembly arranged on the first bracket in sequence from back to front. The first transition traction assembly includes a traction pressure roller and a first transition traction roller arranged on the upper side of the traction pressure roller. The tension roller assembly includes a tension roller, a tension detection sensor, and a tension adjustment device for driving the tension roller to swing.

[0008] The tension adjustment device includes two swing plates respectively arranged at both ends of the tension roller, two receiving seats arranged on the first bracket and respectively located on both sides of the tension roller, a connecting shaft rotatably connected to the two receiving seats, and a driving motor. The driving motor is connected to the connecting shaft through a transmission mechanism. The connecting shaft passes through the two swing plates and can drive the swing plates to swing.

[0009] A first slide electric cylinder is disposed transversely between the second transition traction roller and the first transition traction assembly, and a displacement sensor is disposed on the slide of the slide electric cylinder.

[0010] The tension holding device comprises a second bracket arranged on the first frame, a transition roller rotatably arranged on the second bracket, a pressing plate, and a tension pressing cylinder for driving the pressing plate to press the protective film onto the transition roller.

[0011] The cutting device includes a support rod arranged on the first frame, a second slide electric cylinder arranged at the lower side of the support rod, a cutting and clamping cylinder for driving the second slide electric cylinder to move up and down, a film cutting tool arranged at the bottom of the second slide electric cylinder and a clamping mechanism for clamping the protective film, and the second slide electric cylinder is used to drive the film cutting tool to move horizontally so that the film cutting tool cuts the protective film.

[0012] The clamping mechanism includes a clamping seat arranged below the second slide electric cylinder, a front guard plate and a rear guard plate respectively arranged on the front and rear sides of the second slide electric cylinder, and pressure strips correspondingly arranged on the front guard plate and the rear guard plate, and the pressure strips are used to clamp the protective film on the clamping seat.

[0013] The active traction device includes a third slide electric cylinder and a fourth slide electric cylinder which are symmetrically arranged. The third slide electric cylinder and the fourth slide electric cylinder both include a cylinder body, a transmission assembly arranged on the cylinder body, and a slide movable along the length extension direction of the cylinder body. The transmission assemblies of the two third slide electric cylinders and the fourth slide electric cylinder are connected by a driving device, which is used to drive the transmission assemblies of the third slide electric cylinder and the fourth slide electric cylinder to move synchronously. A support seat is provided on each slide, and an air clamping device for clamping the protective film is provided on the support seat.

[0014] The driving device comprises a servo motor and a dual-output shaft reducer transmission-connected to the servo motor, wherein both output ends of the dual-output shaft reducer are connected to corresponding transmission components through a universal coupling.

[0015] The support seat is an integrally arranged flat plate and folding plate, the flat plate is arranged horizontally, the folding plate is connected to the slide screw, and two or more air clamping devices are arranged on the upper end surface of each flat plate, and the air clamping device includes pneumatic clamping fingers and clamping pieces respectively arranged on the two clamping fingers of the pneumatic clamping fingers.

[0016] Beneficial effects:

[0017] The present invention provides a protective film traction and cutting device. Compared with the prior art, when working, the protective film is first introduced from the transition traction device; the air clamp device in the active traction device clamps the protective film, and the driving device drives the air clamp device to pull the protective film forward and unfold horizontally. When the air clamp device moves forward a predetermined distance (i.e., the packaging length), the driving device automatically stops working, and the piston rod of the tension clamping cylinder extends to enable the pressure plate to press the protective film and stop the transition roller. At the same time, the cutting device cuts the protective film. Then, the air clamp device is released, and the worker takes away the cut protective film. The driving device drives the air clamp device to move to a predetermined clamping point, clamps the protective film again, and the piston rod of the tension clamping cylinder is reset to drive the pressure plate to rise, and the cutting of the next protective film can be started. In addition, the first slide electric cylinder drives the non-contact laser displacement sensor to move horizontally, thereby detecting the edge positions on both sides of the protective film, and then calculating the width of the protective film, so that the user can quickly know the width of the protective film, save the time of manual measurement, and improve the wrapping efficiency of the finished film roll. It can be seen that the protective film traction and cutting device can be suitable for protective film rolls of different widths, and can automatically cut the protective film rolls into packaging lengths of different sizes, so that the protective film can be packaged corresponding to different types of finished film rolls, thereby improving the automation level of finished film roll packaging, reducing the labor intensity of workers, and improving packaging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the protective film traction and cutting device provided by the present invention.

[0019] Figure 2 A three-dimensional diagram of a transition traction device and a tension maintaining device in the protective film traction and cutting device provided by the present invention.

[0020] Figure 3 for Figure 2 A partial enlarged view of the middle M area.

[0021] Figure 4 A three-dimensional diagram of a cutting device in the protective film traction and cutting device provided by the present invention.

[0022] Figure 5 This is a left view of the cutting device in the protective film traction and cutting device provided by the present invention.

[0023] Figure 6 A three-dimensional diagram of the active traction device in the protective film traction and cutting device provided by the present invention.

[0024] Figure 7 for Figure 6 A partial enlarged view of the X area in the middle.

[0025] Figure 8 for Figure 6 A partial enlarged view of the middle P area. DETAILED DESCRIPTION

[0026] The present invention provides a protective film pulling and cutting device. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the scope of protection of the present invention.

[0027] Herein, the direction from the first rack A to the second rack B is “front”, and the direction opposite to the “front” is “rear”.

[0028] See also Figure 1-Figure 8 The present invention provides a protective film traction and cutting device, comprising a first frame A, a second frame B, a transition traction device 1, a tension holding device 2, a cutting device 3, which are arranged on the first frame from back to front, and an active traction device 4 arranged between the first frame A and the second frame B, wherein the transition traction device 1 is used to form a traction tension on the protective film; the active traction device 4 is used to pull the protective film forward to unfold; the tension holding device 2 is used to press the protective film before cutting to maintain the traction tension on the transition traction device; and the cutting device 3 is used to cut the protective film.

[0029] See Figure 2 The transition traction device 1 includes a first bracket 11, a first transition traction assembly 12, a second transition traction roller 13, and a tension roller assembly, which are arranged on the first bracket from back to front. The first transition traction assembly 12 includes a traction pressure roller 12b and a first transition traction roller 12a arranged on the upper side of the traction pressure roller. The tension roller assembly includes a tension roller 15, a tension detection sensor 16, and a tension adjustment device 17 for driving the tension roller to swing. When working, the protective film is first introduced between the traction pressure roller 12b and the first transition traction roller 12a, and then passes through the second transition traction roller 13 and the tension roller 15 in sequence. When the active traction device 4 pulls the protective film forward to unfold, the tension detection sensor 16 detects the position change of the tension roller in real time. When the range of movement of the tension roller exceeds the preset range, the tension detection sensor feedback signal controls the tension adjustment device 17, thereby driving the tension roller 15 to swing, thereby achieving the effect of dynamically adjusting the traction tension of the protective film.

[0030] For further information, see Figure 3The tension adjustment device 17 includes two swing plates 17a respectively arranged at both ends of the tension roller, two receiving seats 17b arranged on the first bracket and respectively located on both sides of the tension roller, a connecting shaft 17c rotatably connected to the two receiving seats, and a driving motor 17d. The driving motor 17d is connected to the connecting shaft 17c through a transmission mechanism 18. The connecting shaft 17c passes through the two swing plates 17a and can drive the swing plates to swing. Here, the tension detection sensor 16 can detect the distance between the swing plate and its detection head when the protective film is actively pulled forward, and feedback a signal to the driving motor 17d. The driving motor drives the connecting shaft 17c to rotate through the transmission mechanism 18, thereby adjusting the swing plate 17a to swing, so that the protective film obtains a suitable pulling tension.

[0031] Preferably, the transmission mechanism 18 comprises a first pulley 18a provided at the output end of the driving motor and a second pulley 18b provided at one end of the connecting shaft, and the first pulley 18a is connected to the second pulley 18b by a belt 18c. Due to the high stability and low noise of the pulley transmission, the tension adjustment device can smoothly correct the deviation of the tension roller and improve the stability of the traction tension.

[0032] As a preferred option, please refer to Figure 2 A first slide electric cylinder 51 is disposed transversely between the second transition traction roller 13 and the first transition traction assembly 12, and a displacement sensor 52 is disposed on the slide of the slide electric cylinder. The displacement sensor 52 is preferably a non-contact laser displacement sensor, which is driven by the first slide electric cylinder to move transversely, thereby detecting the edge positions on both sides of the protective film, and then calculating the width of the protective film, so that the user can better know the width of the protective film and better wrap the finished film roll.

[0033] For details, please refer to Figure 6-Figure 8 The active traction device 4 includes a third slide electric cylinder 41 and a fourth slide electric cylinder 42 which are symmetrically arranged. The third slide electric cylinder and the fourth slide electric cylinder both include a cylinder body 43, a transmission assembly 44 arranged on the cylinder body, and a slide 45 which can move along the length extension direction of the cylinder body. The transmission assemblies of the two third slide electric cylinders 41 and the fourth slide electric cylinder 42 are connected by a driving device 46, and the driving device 46 is used to drive the transmission assemblies 44 of the third slide electric cylinder 41 and the fourth slide electric cylinder 42 to move synchronously; each slide is provided with a support seat 47, and the support seat is provided with an air clamping device 48 for clamping the protective film.

[0034] During operation, the driving device 46 drives the transmission components in the third slide electric cylinder 41 and the fourth slide electric cylinder 42 to move synchronously, so that the slides on the third slide electric cylinder 41 and the fourth slide electric cylinder 42 move toward the direction close to the protective film. After the slides reach the predetermined clamping point, the air clamp device 48 clamps the protective film, and the driving device reversely drives the transmission components in the third slide electric cylinder 41 and the fourth slide electric cylinder 42, so that the air clamp device 48 pulls the protective film forward and unfolds horizontally. When the slide moves forward a predetermined distance (i.e., the packaging length), the driving device 46 stops working. The third slide electric cylinder 41 and the fourth slide electric cylinder can smoothly drive the air clamp device to move forward and backward to achieve automatic traction of the protective film.

[0035] Preferably, see Figure 8 The driving device 46 includes a servo motor 46a and a dual-output shaft reducer 46b connected to the servo motor, and both output ends of the dual-output shaft reducer are connected to the corresponding transmission assembly 44 through a universal coupling 46c. The driving device has a compact structure, ensuring that the third sliding electric cylinder 41 and the fourth sliding electric cylinder 42 move synchronously, so that the traction force on both sides of the protective film is the same, and the protective film can be pulled forward smoothly and effectively. Since the universal coupling is used as a transmission component, even if the input shafts of the dual-output shaft reducer and the transmission assembly are not on the same axis, the two connected shafts can be continuously rotated when there is an axis angle, and torque and motion can be reliably transmitted.

[0036] Preferably, see Figure 7 The support seat 47 is an integrally arranged flat plate 47a and folding plate 47b. The flat plate is arranged horizontally, and the folding plate is connected to the slide screw. In order to further improve the clamping force on each side of the protective film, two or more air clamping devices 48 are arranged on the upper end surface of each flat plate. The air clamping device 48 includes a pneumatic clamping finger 48a and a clamping piece 48b respectively arranged on two clamping fingers of the pneumatic clamping finger. The clamping area can be increased by arranging the clamping piece and the tooth groove 48c on the clamping piece, thereby improving the clamping force and preventing the protective film from loosening due to insufficient clamping force during traction.

[0037] For details, please refer to Figure 2 The tension holding device 2 includes a second bracket 21 arranged on the first frame 1, a transition roller 22 rotatably arranged on the second bracket, a pressure plate 23, and a tension pressing cylinder 24 for driving the pressure plate to press the protective film onto the transition roller. When the active traction device 4 pulls the protective film forward to the required length, the piston rod of the tension pressing cylinder 24 extends to enable the pressure plate 23 to press the protective film and stop the transition roller 22. The structure is simple and the response speed is fast. The continuity of the traction tension of the protective film is maintained by the tension holding device to prevent the protective film from losing the traction tension of the protective film after cutting, thereby realizing the automatic cutting of the protective film in batches.

[0038] Preferably, the second bracket is further provided with a first guide mechanism 25, which includes a sleeve 25a provided on the upper surface of the second bracket, a guide shaft 25b vertically passing through the sleeve and the second bracket, and the lower end of the guide shaft is connected to the tension-stopping plate through a connecting block 25c. The guide shaft can guide the movement of the plate to ensure that the plate is always aligned with the transition roller, and can also limit the plate to prevent the piston rod of the cylinder from being deformed by the tangential force.

[0039] In this embodiment, two groups of the tension pressing cylinder 24 and the first guide mechanism 25 are provided. By providing two types of cylinders and guide mechanisms, the protective film can be pressed better to ensure the continuation of the traction tension.

[0040] For details, please refer to Figure 4-Figure 5 The cutting device 3 includes a support rod 31 arranged on the first frame 1, a second slide electric cylinder 32 arranged at the lower side of the support rod, a cutting and pressing cylinder 33 for driving the second slide electric cylinder to move up and down, a film cutting tool 34 arranged at the bottom of the second slide electric cylinder and a pressing mechanism for pressing the protective film, and the second slide electric cylinder 32 is used to drive the film cutting tool 34 to move horizontally so that the film cutting tool cuts the protective film. The film cutting tool 34 includes a knife seat 34a and a cutting knife 34b arranged on the knife seat, and the knife seat is fixedly installed on the slide 32a of the second slide electric cylinder.

[0041] Preferably, the clamping mechanism includes a clamping seat 35a arranged below the second slide electric cylinder, a front guard plate 35b and a rear guard plate 35c respectively arranged on the front and rear sides of the second slide electric cylinder, and a pressure strip 35d correspondingly arranged on the front guard plate and the rear guard plate, and the pressure strip is used to clamp the protective film on the clamping seat.

[0042] When working, the cutting and pressing cylinder 33 drives the second slide electric cylinder 32 to move vertically downward, so that the pressure bar presses the protective film on the upper end surface of the pressing seat 35a, and then the second slide electric cylinder 32 drives the film cutting tool 34 to move horizontally to cut the protective film; finally, the cutting and pressing cylinder starts the second slide electric cylinder to move vertically upward, waiting for the next cutting action. It can be seen that the protective film cutting device can quickly and effectively cut the protective film and improve the packaging efficiency of the finished film roll.

[0043] Preferably, the support rod 31 is also connected to the second slide electric cylinder 32 through a second guide mechanism 36, and the second guide mechanism 36 includes a sleeve 36a arranged on the upper surface of the support rod, a guide shaft 36b vertically passing through the sleeve and the support rod, and the lower end of the guide shaft is connected to the second slide electric cylinder through a connecting block 36c. The guide shaft can guide the movement of the second slide electric cylinder to ensure that the second slide electric cylinder is always aligned with the clamping seat, and can also limit the second slide electric cylinder to prevent the piston rod of the cutting clamping cylinder from being deformed by the tangential force.

[0044] In this embodiment, two groups of the cutting and pressing cylinder 33 and the second guide mechanism 36 are provided. By providing two types of cylinders and guide mechanisms, the protective film can be pressed better to ensure a better cutting effect.

[0045] Specifically, the two pressure strips 35d are arranged between the front guard plate 35b and the rear guard plate 35c, and each pressure strip 35d is bolted to the front guard plate 35b or the rear guard plate 35c through a mounting strip 37. The height of the lower end surface of each pressure strip is lower than the height of the lower end surface of the guard plate, ensuring that the guard plate does not contact the pressing seat 35a.

[0046] Preferably, see Figure 4 A maintenance opening 38 is provided at one end of the front guard plate, and a flap 39a matching the shape of the maintenance opening is provided corresponding to the maintenance opening, and the flap is connected to the front guard plate 35b through a hinge 39b. The flap and the front guard plate are also connected through a lock 39c. In normal operation, the lock is closed and the flap covers the maintenance opening; when the cutter needs to be replaced or maintained, the lock is opened and the flap is rotated outward to maintain the cutter, thereby ensuring the effective cutting performance of the cutter.

[0047] In this article, the first slide electric cylinder 51, the second slide electric cylinder 32, the third slide electric cylinder 41, and the fourth slide electric cylinder 42 are preferably synchronous belt slide electric cylinders, that is, the transmission components of the third slide electric cylinder and the fourth slide electric cylinder are synchronous belt transmission mechanisms. The synchronous belt slide electric cylinder is a prior art, and its structure and working principle are not described here. The synchronous belt electric cylinder can be purchased from the market, such as the synchronous belt electric cylinder provided by Shenzhen Ant Factory. The third slide electric cylinder and the fourth slide electric cylinder in the active traction device 4 are installed on the second frame 2 through the third bracket 49; during assembly, the third slide electric cylinder and the fourth slide electric cylinder need to remove the original drive motor and be synchronously driven by the above-mentioned drive device.

[0048] The working principle is briefly described below. When working, the protective film is first introduced between the traction pressure roller 12b and the first transition traction roller 12a, and then passes through the second transition traction roller 13, the tension roller 15, and the transition roller 22 in sequence. The driving device 46 drives the transmission components in the third slide electric cylinder 41 and the fourth slide electric cylinder 42 to move synchronously, so that the slides on the third slide electric cylinder 41 and the fourth slide electric cylinder 42 move toward the direction close to the protective film. After the slides reach the predetermined clamping point, the pneumatic clamping finger 48a of the air clamp device drives the clamping piece 48b to clamp the protective film. The driving device reversely drives the transmission components in the third slide electric cylinder 41 and the fourth slide electric cylinder 42, so that the air clamp device 48 pulls the protective film forward and unfolds horizontally. When the air clamp device moves forward a predetermined distance (i.e., the packaging length), the driving device 46 automatically stops working, and the piston rod of the tension clamping cylinder 33 extends to enable the pressing plate 23 to press the protective film and stop the transition roller 22. At the same time, the cutting and clamping cylinder 33 drives the second slide electric cylinder 32 to move vertically downward, so that the pressure strip 35d presses the protective film on the upper end surface of the clamping seat 35a, and then the second slide electric cylinder 32 drives the film cutting tool 34 to move horizontally to cut the protective film. Then the cutting and clamping cylinder 33 drives the second slide electric cylinder 32 to rise vertically. Next, the pneumatic clamping fingers of the air clamp device are released, and the worker takes away the cut protective film. The drive device 46 drives the air clamp device 48 to move to the predetermined clamping point, clamps the protective film again, and the piston rod of the tension clamping cylinder 24 is reset to drive the pressure plate 23 to rise, and the cutting of the next protective film can begin. In addition, the first slide electric cylinder 51 drives the non-contact laser displacement sensor 52 to move horizontally, thereby detecting the edge position on both sides of the protective film, and then calculating the width of the protective film, so that the user can quickly know the width of the protective film, saving the time of manual measurement, and improving the wrapping efficiency of the finished film roll. It can be seen that the protective film traction and flattening device can be suitable for protective film rolls of different widths, and can automatically cut the protective film rolls into packaging lengths of different sizes, so that the protective film can be packaged corresponding to different types of finished film rolls, thereby improving the automation level of finished film roll packaging, reducing the labor intensity of workers, and improving packaging efficiency.

[0049] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A protective film traction and cutting device, characterized in that: The invention comprises a first frame, a second frame, a transition traction device, a tension holding device, a cutting device, and an active traction device arranged between the first frame and the second frame in sequence from back to front; the transition traction device is used to form a traction tension on the protective film; the active traction device is used to pull the protective film to unfold forward; the tension holding device is used to press the protective film before cutting to maintain the traction tension on the transition traction device; the cutting device is used to cut the protective film; the transition traction device comprises a first bracket, a first transition traction assembly, a second transition traction roller, and a tension roller assembly arranged on the first bracket in sequence from back to front; the first transition traction assembly comprises a traction pressure roller and a first transition traction roller arranged on the upper side of the traction pressure roller, the tension roller assembly comprises a tension roller, a tension detection sensor, and a tension adjustment device for driving the tension roller to swing; the tension holding device comprises a second bracket arranged on the first frame, a transition roller rotatably arranged on the second bracket, a pressure plate, and a tension adjusting device for driving the tension roller to swing The movable pressure plate presses the protective film against the tension pressing cylinder on the transition roller; the cutting device includes a support rod arranged on the first frame, a second slide electric cylinder arranged at the lower side of the support rod, a cutting pressing cylinder for driving the second slide electric cylinder to move up and down, a film cutting tool arranged at the bottom of the second slide electric cylinder and a pressing mechanism for pressing the protective film, the second slide electric cylinder is used to drive the film cutting tool to move laterally so that the film cutting tool cuts the protective film; the active traction device includes a symmetrically arranged third slide electric cylinder and a fourth slide electric cylinder, the third slide electric cylinder and the fourth slide electric cylinder both include a cylinder body, a transmission assembly arranged on the cylinder body, and a slide movable along the length extension direction of the cylinder body, the transmission assemblies of the two third slide electric cylinders and the fourth slide electric cylinder are connected by a driving device, and the driving device is used to drive the transmission assemblies of the third slide electric cylinder and the fourth slide electric cylinder to move synchronously; each slide is provided with a support seat, and the support seat is provided with an air clamping device for clamping the protective film.

2. The protective film pulling and cutting device according to claim 1, characterized in that: The tension adjustment device includes two swing plates respectively arranged at the two ends of the tension roller, two receiving seats arranged on the first bracket and respectively located on both sides of the tension roller, a connecting shaft rotatably connected to the two receiving seats, and a driving motor; the driving motor is connected to the connecting shaft through a transmission mechanism, and the connecting shaft passes through the two swing plates and can drive the swing plates to swing.

3. The protective film pulling and cutting device according to claim 1, characterized in that: A first slide electric cylinder is disposed transversely between the second transition traction roller and the first transition traction assembly, and a displacement sensor is disposed on the slide of the slide electric cylinder.

4. The protective film pulling and cutting device according to claim 1, characterized in that: The clamping mechanism includes a clamping seat arranged below the second slide electric cylinder, a front guard plate and a rear guard plate respectively arranged on the front and rear sides of the second slide electric cylinder, and pressure strips correspondingly arranged on the front guard plate and the rear guard plate, and the pressure strips are used to clamp the protective film on the clamping seat.

5. The protective film pulling and cutting device according to claim 1, characterized in that: The driving device comprises a servo motor and a dual-output shaft reducer transmission-connected to the servo motor, wherein both output ends of the dual-output shaft reducer are connected to corresponding transmission components through a universal coupling.

6. The protective film pulling and cutting device according to claim 1, characterized in that: The support seat is an integrally arranged flat plate and folding plate, the flat plate is arranged horizontally, the folding plate is connected to the slide screw, and two or more air clamping devices are arranged on the upper end surface of each flat plate, and the air clamping device includes pneumatic clamping fingers and clamping pieces respectively arranged on the two clamping fingers of the pneumatic clamping fingers.

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