A slitting device for plastic film production

Abstract

This invention relates to a slitting device for plastic film production, applicable to the field of plastic film production technology. The device includes a body, a slitting mechanism, a temperature control mechanism, and a slitting intelligent controller. The slitting mechanism includes a main drive unit mounted on an interval adjustment seat, a cutting disc mounted on the output shaft of the main drive unit, a protective cover mounted on the outside of the cutting disc, and control covers respectively fitted onto both ends of the protective cover. The temperature control mechanism includes a temperature control cylinder, a return pipe connected to the input end of the temperature control cylinder, a cooling pipe connected to the output end of the temperature control cylinder, and a cooling component mounted on the temperature control cylinder. The slitting intelligent controller is equipped with an analysis module, a heat dissipation module, and a cooling module. Using the above structure, the slitting intelligent controller adjusts the heat dissipation effect on the cutting disc in real time according to the temperature state of the cutting disc, and cools the inner cavity of the temperature control cylinder through the cooling component, enhancing the heat dissipation effect on the cutting disc and recycling the cold air to save energy.

Description

Technical Field

[0001] This invention relates to a slitting device, and more particularly to a slitting device for plastic film production applied in the field of plastic film production technology. Background Technology

[0002] Film slitting machines can precisely cut large rolls of film to meet specific needs, enabling customized film production to improve subsequent production efficiency and optimize film material utilization. Film slitting machines play a crucial role in packaging, printing, electronics, and other fields, and are an indispensable tool in modern industrial production.

[0003] Chinese patent application CN117207279A discloses a slitting machine for film processing, including a support base and a servo motor. A transmission chain connects the outer sides of the drive sprocket and the driven sprocket, and the drive sprocket and the driven sprocket are connected by the transmission chain. A rotation locking component is provided between the support base and the servo motor. A spacing adjustment component is provided inside the support base, and a cutter grinding component is provided on the front of the spacing adjustment component. A crank rod drives the rotating drum to rotate. Because the limiting rod is located within the U-shaped frame, it restricts the movement path of the rotating drum, causing the U-shaped frame to deflect back and forth. This causes the U-shaped frame to sequentially lock the fixed column, driving the wheel to rotate, which in turn drives the rotating roller to rotate synchronously. Then, through the ball bearings along the trajectory of the equidistant arc groove, the equidistant slide plate slides along the slide bar, thereby adjusting the spacing between the cutters. This changes the width of the film strip, thus achieving the effect of adjusting the cutter spacing and changing the roll width.

[0004] When the above solution is implemented, films of different widths are cut by adjusting the spacing between the cutters. In order to improve production efficiency, wider films are produced and wound onto a longer roll. Then, customized slitting is carried out according to customer needs. In the existing technology, when the cutter cuts the wound film, the cutter will generate heat due to friction with the film during the cutting process. The heat on the cutter will gradually accumulate, causing the edges of the cut film to melt and stick together, affecting the quality of the cut film. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when the cutter cuts the wound film, the cutter will generate heat due to friction with the film during the cutting process. The heat on the cutter will gradually accumulate, causing the edges of the cut film to melt and stick together, affecting the quality of the cut film.

[0006] To address the above problems, the present invention provides a slitting device for plastic film production, comprising:

[0007] The machine body has a drive roller rotatably connected to it, and a sliding block is slidably connected to the bottom of the machine body. Multiple interval adjustment seats are slidably connected to the upper end of the sliding block.

[0008] The slitting mechanism includes a slitting mechanism installed on each interval adjustment seat. The slitting mechanism includes a main drive unit installed with the interval adjustment seat, a cutting disc installed on the output shaft of the main drive unit, a protective cover installed on the outside of the cutting disc, and control covers respectively fitted on both ends of the protective cover. The main drive unit is used to drive the cutting disc to rotate. A control mechanism is provided between the two control covers. The control mechanism is used to drive the two control covers to move circumferentially along the protective cover. A temperature sensor corresponding to the cutting disc is installed on the inner wall of the protective cover.

[0009] The temperature control mechanism is set up in correspondence with the cutting mechanism. The temperature control mechanism includes a temperature control cylinder, a return pipe connected to the input end of the temperature control cylinder, a cooling pipe connected to the output end of the temperature control cylinder, and a cooling component installed on the temperature control cylinder. A circulating air pump is installed on the cooling pipe. The output end of the cooling pipe is connected to the inside of one of the control hoods, and the input end of the return pipe is connected to the inside of the other control hood.

[0010] The slitting intelligent controller is installed on the machine body. The slitting intelligent controller is equipped with an analysis module, a heat dissipation module, and a cooling module. The analysis module is electrically connected to the heat dissipation module, the cooling module, and the temperature sensor. The heat dissipation module is electrically connected to the control mechanism. The cooling module is electrically connected to the circulating air pump and the cooling components.

[0011] In the aforementioned slitting device for plastic film production, the heat dissipation effect on the cutting disc is adjusted in real time by the slitting intelligent controller according to the temperature status of the cutting disc. The cooling component cools the inner cavity of the temperature control cylinder, enhancing the heat dissipation effect on the cutting disc and recycling the cold air to save energy.

[0012] As a further improvement of this application, an open limit switch is provided on the side of the control cover away from the drive roller and installed with the protective cover, and a closed limit switch is provided on the side of the control cover close to the drive roller and installed with the interval adjustment seat. The analysis module is electrically connected to the open limit switch and the closed limit switch respectively.

[0013] As a further improvement of this application, the control mechanism includes a control drive component installed with the interval adjustment seat and a drive gear ring rotatably connected to the protective cover. The output end of the control drive component is linked with the drive gear ring through a gear set to drive the drive gear ring to rotate. Arc-shaped rack one and arc-shaped rack two are respectively provided on both sides of the drive gear ring. Arc-shaped rack one is fixed to the outer wall of one of the control covers, and arc-shaped rack two is fixed to the outer wall of the other control cover. The heat dissipation module is electrically connected to the control drive component.

[0014] As a further improvement of this application, the return pipe and temperature sensor are installed on the corresponding control cover at one end near the drive roller, and sealing rings are fixedly installed on the outer rings of both ends of the protective cover.

[0015] As another improvement of this application, a vent pipe is connected to one end of the temperature control cylinder near the return pipe, a solenoid valve is installed on the vent pipe, a temperature sensor is installed inside the temperature control cylinder, the cooling module is electrically connected to the solenoid valve, and the analysis module is electrically connected to the temperature sensor.

[0016] As a further improvement to this application, a piston plate is slidably connected to the inner cavity of the temperature control cylinder, a balance tube is connected to the middle of the piston plate, a second solenoid valve is installed on the balance tube, a second temperature sensor is installed on the side of the piston plate near the return tube, an elastic element is installed between the piston plate and the inner wall of the temperature control cylinder near the return tube, and the cooling module is electrically connected to the second solenoid valve.

[0017] As a further improvement to this application, an upper limit switch is installed on the inner wall of the temperature control cylinder near the end of the return pipe, and a lower limit switch is installed on the inner wall of the temperature control cylinder near the end of the cooling pipe. The cooling module is electrically connected to the upper limit switch and the lower limit switch respectively.

[0018] As another improvement of this application, thermally conductive silicone grease is provided between the cooling end of the cooling component and the side wall of the temperature control cylinder, and both the inner and outer walls of the temperature control cylinder are covered with an insulation layer.

[0019] In summary, it enables the control mechanism to move the two control covers further apart, increasing the exposed area of ​​the cutting disc. It utilizes ambient temperature to cool the cutting disc, saving energy. When the disc generates significant heat, the intelligent slitting controller adjusts the heat dissipation effect on the cutting disc. The cooling module controls the cooling components and circulating air pump to cool the air inside the temperature control cylinder and circulate the cooled air to the cutting disc, increasing the cooling effect. Simultaneously, the heat dissipation module controls the control mechanism, which moves the two control covers closer together, reducing the exposed area of ​​the cutting disc, increasing the contact time between the cold air and the cutting disc, improving temperature control, reducing heat generation, and improving the quality of the slit film. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the first and second embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the cutting mechanism and temperature control mechanism in the first and second embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the control cover after it is fully deployed according to the first and second embodiments of this application.

[0023] Figure 4 For this application Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a schematic diagram of the control cover after it is closed according to the first and second embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the control principle of the splitting intelligent controller according to the first embodiment of this application;

[0026] Figure 7 This is a cross-sectional schematic diagram of the temperature control cylinder cooling the cutting disc according to the first and second embodiments of this application;

[0027] Figure 8 This is a schematic diagram showing the piston plate moving downwards after the second solenoid valve is closed in the first and second embodiments of this application.

[0028] Figure 9 This is a schematic diagram showing the piston plate moving upward after the solenoid valve 2 is opened in the first and second embodiments of this application.

[0029] Figure 10 This is a schematic diagram of the control principle of the splitting intelligent controller according to the second embodiment of this application.

[0030] Explanation of the labels in the diagram:

[0031] 1. Machine body; 2. Slitting intelligent controller; 3. Drive roller; 4. Slitting travel block; 5. Interval adjustment seat; 6. Slitting mechanism; 7. Temperature control mechanism; 8. Main drive component; 9. Cutting disc; 10. Protective cover; 11. Control cover; 12. Control mechanism; 13. Open limit switch; 14. Closed limit switch; 15. Cooling pipe; 16. Return pipe; 17. Temperature sensor one; 18. Temperature control cylinder; 19. Circulating air pump; 20. Cooling component; 21. Vent pipe; 22. Solenoid valve one; 23. Arc rack one; 24. Arc rack two; 25. Drive gear ring; 26. Control drive component; 27. Piston plate; 28. Balance pipe; 29. ​​Solenoid valve two; 30. Temperature sensor two; 31. Upper limit switch; 32. Elastic component; 33. Lower limit switch. Detailed Implementation

[0032] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0033] First implementation method:

[0034] Figures 1-6A slitting device for plastic film production is shown, including a body 1, a slitting mechanism 6, a temperature control mechanism 7, and a slitting intelligent controller 2. A drive roller 3 is rotatably connected to the body 1, and a slitting travel block 4 is laterally slidably connected to the bottom of the body 1. Multiple interval adjustment seats 5 are longitudinally slidably connected to the upper end of the slitting travel block 4. The entire wound film is placed on the drive roller 3 and driven to rotate by the drive roller 3. A slitting mechanism 6 is installed on each interval adjustment seat 5. By controlling the distance between adjacent interval adjustment seats 5, the distance between adjacent slitting mechanisms 6 is adjusted, thereby adjusting the width of the slitting film. By controlling the movement of the slitting travel block 4 toward the drive roller 3, the slitting mechanism 6 is controlled to slitting the film, thereby improving the slitting efficiency.

[0035] It is worth mentioning that you should refer to Figure 2-Figure 5 The slitting mechanism 6 includes a main drive unit 8 mounted with the interval adjustment seat 5, a cutting disc 9 mounted on the output shaft of the main drive unit 8, a protective cover 10 mounted on the outside of the cutting disc 9, and control covers 11 respectively fitted at both ends of the protective cover 10. The main drive unit 8 is used to drive the cutting disc 9 to rotate. A control mechanism 12 is provided between the two control covers 11. The control mechanism 12 is used to drive the two control covers 11 to move around the protective cover 10. The two control covers 11 are driven to move closer or further away. A temperature sensor 17 corresponding to the cutting disc 9 is installed on the inner wall of the protective cover 10. The temperature sensor 17 detects the temperature of the cutting disc 9 during slitting and adjusts the position of the control cover 11 as needed to adjust the exposed area of ​​the cutting disc 9, thereby adjusting the heat dissipation effect of the cutting disc 9 according to the heat generated.

[0036] In addition, the temperature control mechanism 7 is correspondingly arranged with the cutting mechanism 6. The temperature control mechanism 7 includes a temperature control cylinder 18, a return pipe 16 connected to the input end of the temperature control cylinder 18, a cooling pipe 15 connected to the output end of the temperature control cylinder 18, and a cooling component 20 installed on the temperature control cylinder 18. The cooling component 20 is preferably a semiconductor cooling chip. A circulating air pump 19 is installed on the cooling pipe 15. The output end of the cooling pipe 15 is connected to the inside of one of the control covers 11, and the input end of the return pipe 16 is connected to the other... The inner side of a control cover 11 is connected, and the cooling air is introduced into the cutting disc 9 through the temperature control mechanism 7 to dissipate heat from the cutting disc 9. The cooling component 20 cools the inner cavity of the temperature control cylinder 18. The circulating air pump 19 is controlled to operate, and the cold air in the inner cavity of the temperature control cylinder 18 is introduced into the cutting disc 9 through the cooling pipe 15. The cold air is also recovered into the temperature control cylinder 18 through the return pipe 16 on the other end of the control cover 11 for recycling, which improves the cooling effect on the cutting disc 9 and saves energy.

[0037] In this embodiment, the slitting intelligent controller 2 is installed on the machine body 1. The slitting intelligent controller 2 is equipped with an analysis module, a heat dissipation module, and a cooling module. The analysis module is electrically connected to the heat dissipation module, the cooling module, and the temperature sensor 17. The heat dissipation module is electrically connected to the control mechanism 12. The cooling module is electrically connected to the circulating air pump 19 and the cooling component 20. When the cutting disc 9 is driven by the main drive component 8 to slit the film, the temperature sensor 17 sends the detected working temperature data of the cutting disc 9 to the analysis module in real time. When the analysis module determines that the temperature of the cutting disc 9 is gradually rising, it sends a heat dissipation signal to the heat dissipation module. The heat dissipation module controls the control mechanism 12 to work. The control mechanism 12 controls the two control covers 11 to move away, increasing the exposed area of ​​the cutting disc 9, and using the ambient temperature to cool the cutting disc 9. When the temperature rise of the cutting disc 9 reaches the temperature threshold (the analysis module has a preset upper limit for the temperature of the cutting disc 9 when using ambient cooling), the analysis module sends a cooling signal to the cooling module. The cooling module increases the cooling effect on the cutting disc 9. The cooling module controls the cooling component 20 and the circulating air pump 19 to work, cooling the air in the inner cavity of the temperature control cylinder 18, and circulating the cooling air to the cutting disc 9 through the circulating air pump 19, thus increasing the cooling effect on the cutting disc 9. At the same time, the analysis module sends a control signal to the heat dissipation module, which controls the control mechanism 12 to work. The control mechanism 12 controls the two control covers 11 to move closer together, reducing the exposed area of ​​the cutting disc 9, increasing the contact time between the cold air and the cutting disc 9, improving the temperature control effect on the cutting disc 9, reducing the heat generation of the cutting disc 9, and improving the quality of the film after slitting.

[0038] It is worth mentioning that an open limit switch 13, which is installed with the protective cover 10, is provided on the side of the control cover 11 away from the drive roller 3, and a closed limit switch 14, which is installed with the interval adjustment seat 5, is provided on the side of the control cover 11 closer to the drive roller 3. The analysis module is electrically connected to the open limit switch 13 and the closed limit switch 14 respectively. The cooling module controls the operation of the control mechanism 12, and the control mechanism 12 controls the movement of the control cover 11. When the control cover 11 comes into contact with the open limit switch 13, the cooling module receives the position signal from the open limit switch 13. The analysis module determines that the control cover 11 has reached the upper limit of expansion and needs to be cooled by the cooling module. The analysis module sends a cooling signal to the cooling module and a control signal to the heat dissipation module. The heat dissipation module controls the operation of the control mechanism 12. The control mechanism 12 controls the two control covers 11 to move closer together, reducing the exposed area of ​​the cutting disc 9. When the control cover 11 moves to contact the limit switch 14, the analysis module determines that the control cover 11 has closed in place. The analysis module controls the control mechanism 12 to stop working through the heat dissipation module, which facilitates the positioning of the control cover 11 and the judgment of the heat dissipation effect on the cutting disc 9, so as to facilitate the timely start of the corresponding heat dissipation work. The return pipe 16 and the temperature sensor 17 are installed on the corresponding control cover 11 at one end near the drive roller 3. The cooling air discharged through the cooling pipe 15 can fully contact the cutting disc 9 and be recycled through the return pipe 16. The outer rings of both ends of the protective cover 10 are fixedly installed with sealing rings to reduce the leakage of cooling air and increase the cooling effect on the cutting disc 9.

[0039] It is worth mentioning that you should refer to Figure 3 and Figure 4 The control mechanism 12 includes a control drive 26 installed with the interval adjustment seat 5 and a drive gear ring 25 rotatably connected to the protective cover 10. The output end of the control drive 26 is linked with the drive gear ring 25 through a gear set to drive the drive gear ring 25 to rotate. Arc-shaped rack 1 23 and arc-shaped rack 24 are respectively provided on both sides of the drive gear ring 25. Arc-shaped rack 1 23 is fixed to the outer wall of one of the control covers 11, and arc-shaped rack 24 is fixed to the outer wall of the other control cover 11. The heat dissipation module is electrically connected to the control drive 26 and controls the operation of the control drive 26 through the heat dissipation module. The control drive 26 drives the drive gear ring 25 to rotate, thereby controlling the arc-shaped rack 24 and arc-shaped rack 1 23 to move away from or towards each other, thereby controlling the corresponding two control covers 11 to move closer or further away, and controlling their coverage area on the cutting disc 9.

[0040] Second implementation method:

[0041] Figure 2 and Figures 7-10The illustrated slitting device for plastic film production differs from the first embodiment in that a vent pipe 21 is connected to one end of the temperature control cylinder 18 near the return pipe 16. A solenoid valve 22 is installed on the vent pipe 21, and a temperature sensor 30 is installed inside the temperature control cylinder 18. The cooling module is electrically connected to the solenoid valve 22, and the analysis module is electrically connected to the temperature sensor 30. When the analysis module sends a cooling signal to the cooling module, the cooling module first controls the solenoid valve 22 to open, allowing outside gas to be introduced into the temperature control cylinder 18 through the vent pipe 21. The circulating air pump 19 then rapidly blows the ambient temperature gas onto the cutting disc 9 to cool it down. Meanwhile, the analysis module uses temperature sensor 2 30 to determine whether the temperature inside the temperature control cylinder 18 is higher than the preset value (the analysis module has a preset upper limit value for the temperature inside the temperature control cylinder 18). When it is determined that the temperature is higher than the preset value, it is determined that the gas discharged from the temperature control cylinder 18 cannot effectively cool the cutting disc 9. At this time, the analysis module will control the cooling module to increase the cooling effect. The cooling module controls the solenoid valve 1 22 to close and the cooling component 20 to work. The cooling component 20 actively reduces the gas temperature inside the temperature control cylinder 18. At the same time, the low-temperature gas discharged into the cutting disc 9 is recycled back to the temperature control cylinder 18 through the return pipe 16 for reuse, reducing energy consumption and improving the cooling effect.

[0042] In this embodiment, please refer to Figures 7-9 To ensure that the gas entering the inner cavity of the temperature control cylinder 18 is fully cooled before being discharged to the cutting disc 9 through the cooling pipe 15, a piston plate 27 is slidably connected to the inner cavity of the temperature control cylinder 18. A balance pipe 28 is connected to the middle of the piston plate 27, and a second solenoid valve 29 is installed on the balance pipe 28. A second temperature sensor 30 is installed on the side of the piston plate 27 near the return pipe 16. An elastic element 32 is installed between the piston plate 27 and the inner wall of the temperature control cylinder 18 near the return pipe 16. The elastic element 32 is preferably an elastic rope, spring, or other elastic material. The cooling module is electrically connected to the second solenoid valve 29. Next, the inner cavity of the temperature control cylinder 18 is separated by the piston plate 27, dividing it into a cooling working chamber of the cooling component 20 and a heat preservation chamber that has already been cooled. The connection between the two chambers is controlled by opening and closing the solenoid valve 29. An upper limit switch 31 is installed on the inner wall of the temperature control cylinder 18 near the return pipe 16, and a lower limit switch 33 is installed on the inner wall of the temperature control cylinder 18 near the cooling pipe 15. The cooling module is electrically connected to the upper limit switch 31 and the lower limit switch 33 respectively. When the cutting disc 9 is cooled by ambient gas, such as Figure 7 As shown, the cooling module controls the opening of solenoid valve 22 and solenoid valve 29, allowing outside gas to enter the temperature control cylinder 18 through the vent pipe 21 and be discharged through the balance pipe 28 and cooling pipe 15 to cool the cutting disc 9; when the cooling component 20 is needed to increase the cooling effect, such as Figure 8As shown, the cooling module controls the vent pipe 21 and solenoid valve 29 to close. At this time, the circulating air pump 19 works to draw the gas from the bottom of the piston plate 27 to the cutting disk 9, while simultaneously causing the piston plate 27 to gradually descend. The gas flows into the top of the piston plate 27 through the return pipe 16, and the cooling component 20 continuously cools it. When the piston plate 27 moves down to contact the lower limit switch 33, the cooling module determines that the gas at the bottom of the piston plate 27 has been almost completely discharged and controls solenoid valve 29 to open. Figure 9 As shown, the elastic force of the elastic element 32 controls the piston plate 27 to move upward and reset. At this time, the gas at the top of the piston plate 27, which has been cooled by the cooling component 20, enters the bottom of the piston plate 27 through the balance pipe 28, quickly transferring the cooled gas to the bottom of the piston plate 27. When the piston plate 27 moves upward and contacts the upper limit switch 31, the cooling module determines that the gas at the top of the piston plate 27 has been discharged into the bottom of the piston plate 27, and controls the solenoid valve 29 to close, repeatedly cooling the gas in the top cavity of the piston plate 27. This fully cools the gas and transfers it to the bottom of the piston plate 27, and then discharges it through the cooling pipe 15 to cool the cutting disc 9. This fully cools the gas entering the temperature control cylinder 18 before cooling the cutting disc 9, improving the cooling effect on the cutting disc 9.

[0043] Preferably, thermally conductive silicone grease is provided between the cooling end of the cooling component 20 and the side wall of the temperature control cylinder 18 to quickly introduce the low temperature generated by the cooling component 20 into the inner cavity of the temperature control cylinder 18, thereby improving the cooling effect on the gas inside the temperature control cylinder 18. Both the inner and outer walls of the temperature control cylinder 18 are covered with a heat insulation layer to better preserve the low-temperature gas inside the temperature control cylinder 18.

[0044] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A slitting device for plastic film production, characterized in that, include: A machine body (1) is rotatably connected to a drive roller (3). A slidable cutting block (4) is laterally connected to the bottom of the machine body (1). A plurality of interval adjustment seats (5) are longitudinally connected to the upper end of the slidable cutting block (4). A slidable cutting mechanism (6) is installed on each interval adjustment seat (5). The slidable cutting mechanism (6) includes a main drive component (8) installed with the interval adjustment seat (5) and a cutting disc (9) installed on the output shaft of the main drive component (8). A protective cover (10) is installed on the outside of the cutting disc (9), and control covers (11) are respectively fitted on both ends of the protective cover (10). The main drive component (8) is used to drive the cutting disc (9) to rotate. A control mechanism (12) is provided between the two control covers (11). The control mechanism (12) is used to drive the two control covers (11) to move around the protective cover (10) in the circumference. A temperature sensor (17) corresponding to the cutting disc (9) is installed on the inner wall of the protective cover (10); temperature control mechanism (7) The temperature control mechanism (7) is correspondingly arranged with the cutting mechanism (6). The temperature control mechanism (7) includes a temperature control cylinder (18), a return pipe (16) connected to the input end of the temperature control cylinder (18), a cooling pipe (15) connected to the output end of the temperature control cylinder (18), and a cooling component (20) installed on the temperature control cylinder (18). A circulating air pump (19) is installed on the cooling pipe (15). The output end of the cooling pipe (15) is connected to the inside of one of the control covers (11). The input end of the return pipe (16) is connected to the inside of another control cover (11); the split intelligent controller (2) is installed on the body (1), and the split intelligent controller (2) is provided with an analysis module, a heat dissipation module and a cooling module. The analysis module is electrically connected to the heat dissipation module, the cooling module and the temperature sensor (17) respectively. The heat dissipation module is electrically connected to the control mechanism (12). The cooling module is electrically connected to the circulating air pump (19) and the cooling component (20) respectively. An open limit switch (13) is provided on the side of the control cover (11) away from the drive roller (3) and is installed with the protective cover (10). A closed limit switch (14) is provided on the side of the control cover (11) close to the drive roller (3) and is installed with the interval adjustment seat (5). The analysis module is electrically connected to the open limit switch (13) and the closed limit switch (14) respectively.

2. The slitting device for plastic film production according to claim 1, characterized in that: The control mechanism (12) includes a control drive (26) installed with the interval adjustment seat (5) and a drive gear ring (25) rotatably connected to the protective cover (10). The output end of the control drive (26) is linked with the drive gear ring (25) through a gear set to drive the drive gear ring (25) to rotate. The two sides of the drive gear ring (25) are respectively provided with an arc-shaped rack one (23) and an arc-shaped rack two (24). The arc-shaped rack one (23) is fixed to the outer wall of one of the control covers (11), and the arc-shaped rack two (24) is fixed to the outer wall of the other control cover (11). The heat dissipation module is electrically connected to the control drive (26).

3. A slitting device for plastic film production according to claim 1, characterized in that: The return pipe (16) and temperature sensor (17) are installed on the corresponding control cover (11) at one end near the drive roller (3), and sealing rings are fixedly installed on both ends of the protective cover (10).

4. A slitting device for plastic film production according to claim 1, characterized in that: The temperature control cylinder (18) is connected to a vent pipe (21) at one end near the return pipe (16). A solenoid valve (22) is installed on the vent pipe (21). A temperature sensor (30) is installed in the inner cavity of the temperature control cylinder (18). The cooling module is electrically connected to the solenoid valve (22), and the analysis module is electrically connected to the temperature sensor (30).

5. A slitting device for plastic film production according to claim 4, characterized in that: A piston plate (27) is slidably connected to the inner cavity of the temperature control cylinder (18). A balance tube (28) is connected to the middle of the piston plate (27). A solenoid valve (29) is installed on the balance tube (28). A temperature sensor (30) is installed on the side of the piston plate (27) near the return pipe (16). An elastic element (32) is installed between the piston plate (27) and the inner wall of the temperature control cylinder (18) near the return pipe (16). The cooling module is electrically connected to the solenoid valve (29).

6. A slitting device for plastic film production according to claim 5, characterized in that: An upper limit switch (31) is installed on the inner wall of the temperature control cylinder (18) near the return pipe (16), and a lower limit switch (33) is installed on the inner wall of the temperature control cylinder (18) near the cooling pipe (15). The cooling module is electrically connected to the upper limit switch (31) and the lower limit switch (33) respectively.

7. A slitting device for plastic film production according to claim 1, characterized in that: Thermal grease is provided between the cooling end of the cooling component (20) and the side wall of the temperature control cylinder (18), and the inner and outer walls of the temperature control cylinder (18) are covered with a heat insulation layer.

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