Car wrapping film production line

Abstract

This application discloses a car wrap film production line, comprising two unwinding devices, a laminating device, a cooling roller group, a traction roller group, a storage device, and a winding device arranged sequentially from upstream to downstream, as well as a tension control system. Floating swing roller mechanisms are installed on both unwinding devices and the storage device. The tension control system includes: a programmable controller, a communication module, an expansion module, a touch screen, multiple servo drivers, multiple tension sensors, multiple angular displacement sensors, and multiple proportional valves. The communication module is connected to the programmable controller, and the multiple servo drivers are connected to the communication module via network cables. The expansion module is connected to the programmable controller and the touch screen via network cables. The multiple tension sensors and multiple angular displacement sensors are respectively connected to the expansion module via network cables, and the multiple proportional valves are respectively connected to the expansion module via network cables. The tension control system of this application can meet the high-speed production requirements of car wrap film and can accurately control the precision of unwinding, conveying, and winding.

Description

Technical Field

[0001] This application relates to the field of automotive film production equipment technology, and in particular to an automotive film production line. Background Technology

[0002] Currently, existing car wrap film production lines on the market do not have tension sensors on their cooling rollers and traction rollers. The surface linear speed synchronization of different rollers is poor, the tightness of the car wrap film is difficult to adjust, production efficiency cannot be improved, the tension of the unwinding and winding system is unstable, and the lamination and winding effects cannot meet customer needs. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a car wrapping film production line.

[0004] To achieve the above objectives, this application adopts the following technical solution: a car wrap film production line, comprising two unwinding devices, a laminating device, a cooling roller group, a traction roller group, a storage device, and a winding device arranged sequentially from upstream to downstream, as well as a tension control system. Each of the two unwinding devices and the storage device is equipped with a floating swing roller mechanism. Each floating swing roller mechanism includes a swing arm that swings up and down, a swing gear that swings synchronously with the swing arm, and a low-friction cylinder connected to the swing arm. The tension control system includes: a programmable controller, a communication module, an expansion module, a touch screen, multiple servo drivers, multiple tension sensors, multiple angular displacement sensors, and multiple proportional valves. The communication module is connected to the programmable controller and has a first communication interface. Multiple servo drives are connected to the first communication interface via network cables; the programmable controller has a second communication interface, the expansion module has a third communication interface, a fourth communication interface, multiple analog output interfaces, and multiple analog input interfaces; the second communication interface is connected to the third communication interface via a network cable; the touch screen is connected to the fourth communication interface via a network cable; the multiple tension sensors and the multiple angular displacement sensors are respectively connected to the multiple analog input interfaces via network cables; the multiple proportional valves are respectively connected to the multiple analog output interfaces via network cables; each of the low-friction cylinders has a proportional valve installed at its air port, and each of the swing gears has an angular displacement sensor installed at its location.

[0005] In the above technical solution, a further preferred embodiment is that the expansion module includes a gateway, an analog input module, and an analog output module. The analog input module is connected to the gateway, and the analog output module is connected to the analog input module. The third communication interface and the fourth communication interface are located on the gateway, the plurality of analog input interfaces are located on the analog input module, and the plurality of analog output interfaces are located on the analog output module.

[0006] In the above technical solution, it is further preferred that each of the unwinding devices includes two alternating unwinding shafts and two unwinding motors, each of the unwinding motors is drivenly connected to one of the unwinding shafts, and each of the unwinding motors is electrically connected to one of the servo drivers.

[0007] In the above technical solution, a further preferred embodiment is that the composite equipment includes two calendering rollers and two calendering roller motors, each of the calendering roller motors is drivenly connected to one of the calendering rollers, and each of the calendering roller motors is electrically connected to one of the servo drivers.

[0008] In the above technical solution, a further preferred embodiment is that the cooling roller group includes a plurality of cooling rollers arranged at intervals along the front-back direction and a cooling roller motor for driving the plurality of cooling rollers to rotate synchronously, and the cooling roller motor is electrically connected to a servo driver.

[0009] In the above technical solution, it is further preferred that a plurality of conveying rollers are installed upstream of the cooling roller group and arranged at intervals along the front-back direction, and a tension sensor is installed on one of the conveying rollers.

[0010] In the above technical solution, a further preferred embodiment is that the traction roller group includes a lower traction roller, an upper traction roller that can move radially along the lower traction roller, and a traction motor that is drively connected to the lower traction roller, wherein the traction motor is electrically connected to a servo driver.

[0011] In the above technical solution, it is further preferred that a plurality of traction transition rollers are installed on the front side of the lower traction roller at intervals along the front-back direction, and a tension sensor is installed at one of the traction transition rollers.

[0012] In the above technical solution, a further preferred embodiment is that the storage device includes a plurality of storage rollers arranged alternately up and down along the front-back direction and a storage motor for driving the plurality of storage rollers to rotate synchronously, wherein the storage motor is electrically connected to a servo driver.

[0013] In the above technical solution, a further preferred embodiment is that the winding device includes two winding shafts that wind alternately, two winding motors, and a tension roller located in front of the two winding shafts. Each winding motor is drivenly connected to one of the winding shafts and electrically connected to one of the servo drivers. A tension sensor is installed at the tension roller.

[0014] Compared with the prior art, this application achieves the following beneficial effects: The tension control system of this application can meet the high-speed production of car wrap film and solve the problem of difficulty in synchronizing the speeds of different rollers. It can accurately control the unwinding accuracy, conveying accuracy and rewinding accuracy in the production line, and ensure that the car wrap film of the entire production line is unwound, conveyed and rewound with low tension while producing at high speed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a car wrap film production line provided in an embodiment of this application; Figure 2 for Figure 1 A top view of the car wrapping film production line in China; Figure 3 for Figure 1 A schematic diagram of a floating roller mechanism; Figure 4 This is a schematic diagram of the tension control system of a car wrap film production line provided in an embodiment of this application.

[0016] The components include: 100. Car wrap film production line; 10. Unwinding equipment; 1. Unwinding shaft; 2. Unwinding motor; 20. Laminating equipment; 3. Calendering roller; 4. Calendering roller motor; 30. Cooling roller assembly; 5. Cooling roller; 6. Cooling roller motor; 40. Traction roller assembly; 7. Lower traction roller; 8. Upper traction roller; 9. Traction motor; 18. Traction transition roller; 50. Storage equipment; 11. Storage roller; 12. Storage motor; 60. Rewinding equipment; 13. Rewinding shaft; 14. Rewinding motor; 19. Tension roller; 70. Tension control system; 21. Programmable controller; 210. Second communication interface; 22. Communication module; 220. First communication interface; 23. Expansion module; 231. Gateway; 2311. Third communication interface; 2312. Fourth communication interface; 232. Analog input module; 233. Analog output module. 24. Touch screen; 25. First unwinding servo driver; 26. Second unwinding servo driver; 27. Third unwinding servo driver; 28. Fourth unwinding servo driver; 29. ​​First calendering servo driver; 31. Second calendering servo driver; 32. Cooling roller servo driver; 33. Traction servo driver; 34. Material storage servo driver; 35. First take-up servo driver; 36. Second take-up servo driver; 37. Cooling roller tension sensor; 38. Traction roller tension sensor; 39. Take-up tension sensor; 41. First unwinding angular displacement sensor; 42. Second unwinding angular displacement sensor; 43. Material storage angular displacement sensor; 44. First proportional valve; 45. Second proportional valve; 46. Third proportional valve; 80. Floating swing roller mechanism; 15. Swing arm; 16. Swing gear; 17. Low-friction cylinder. Detailed Implementation

[0017] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0018] This application provides a car wrap film production line, such as... Figure 1 , 2As shown, the car wrap film production line 100 includes two unwinding devices 10, a laminating device 20, a cooling roller group 30, a traction roller group 40, a storage device 50, a winding device 60, and a tension control system 70, arranged sequentially from upstream to downstream. The two unwinding devices 10 unwind the car wrap film and the laminating film, respectively. The car wrap film and the laminating film converge at the laminating device 20 and are laminated into a double-layer car wrap film. The double-layer car wrap film passes sequentially from front to back through the cooling roller group 30, the traction roller group 40, and the unloading device 50 before being wound onto the winding device 60. During the production of the double-layer car wrap film, it is necessary to ensure that the two layers of film are flat and unstretched before lamination, and also to ensure that the laminated double-layer car wrap film is flat and unstretched after lamination. The tension control system 70 needs to accurately control the tension of each layer of film during the conveying process while ensuring high-speed production of the car wrap film production line, ensuring constant tension production.

[0019] Each unwinding device 10 includes two alternating unwinding shafts 1 and two unwinding motors 2. Each unwinding motor 2 is driven by one unwinding shaft 1 to drive the corresponding unwinding shaft 1 to rotate around its own axis. The laminating device 20 includes two calendering rollers 3 and two calendering roller motors 4. Each calendering roller motor 4 is driven by one calendering roller 3 to drive the corresponding calendering roller 3 to rotate around its own axis. The cooling roller group 30 includes a plurality of cooling rollers 5 arranged at intervals in the front-back direction and a cooling roller motor 6 for driving the plurality of cooling rollers 5 to rotate synchronously. The traction roller assembly 40 includes a lower traction roller 7, an upper traction roller 8 capable of radially moving along the lower traction roller 7, and a traction motor 9 connected to the lower traction roller 7. The upper traction roller 8 is close to the lower traction roller 7 to press the double-layer car wrap film onto the lower traction roller 7. The traction motor 9 drives the lower traction roller 7 to rotate around its own axis, providing a front-to-back traction force for the double-layer car wrap film between the upper traction roller 8 and the lower traction roller 7. Multiple traction transition rollers 18 are installed on the front side of the lower traction roller 7 at intervals along the front-to-back direction. The storage device 50 includes multiple storage rollers 11 alternately arranged up and down along the front-to-back direction and a storage motor 12 for driving the multiple storage rollers 11 to rotate synchronously. The multiple storage rollers 11 are divided into upper and lower roller groups. The upper roller group can move up and down in the up-to-down direction. The rising upper roller group increases the movement path of the double-layer car wrap film in the storage device 50 to achieve the purpose of storage. The descending upper roller group reduces the movement path of the double-layer car wrap film in the storage device 50 to achieve the purpose of discharging. The winding device 60 includes two winding shafts 13 that alternately wind up and two winding motors 14. Each winding motor 14 is connected to a winding shaft 13 to drive the corresponding winding shaft 13 to rotate around its own axis. A tension roller 19 is also provided on the front side of the two winding shafts 13.

[0020] like Figure 1-3As shown, in order to improve the unwinding accuracy of the two unwinding devices 10 and the control accuracy of the tension of the double-layer coating film at the storage device 50, floating swing roller mechanisms 80 are installed on both unwinding devices 10 and storage device 50. Each floating swing roller mechanism 80 includes a swing arm 15 that swings up and down, a swing gear 16 that swings synchronously with the swing arm 15, and a low-friction cylinder 17 connected to the swing arm 15. The low-friction cylinder 17 is used to drive the swing arm 15 to swing up and down, thereby adjusting the tightness of the film passing through the floating swing roller mechanism 80.

[0021] like Figure 4 As shown, the tension control system 70 includes: a programmable controller 21, a communication module 22, an expansion module 23, a touch screen 24, a first unwinding servo driver 25, a second unwinding servo driver 26, a third unwinding servo driver 27, a fourth unwinding servo driver 28, a first calendering servo driver 29, a second calendering servo driver 31, a cooling roller servo driver 32, a traction servo driver 33, a storage servo driver 34, a first winding servo driver 35, a second winding servo driver 36, a cooling roller tension sensor 37, a traction roller tension sensor 38, a winding tension sensor 39, a first unwinding angular displacement sensor 41, a second unwinding angular displacement sensor 42, a storage angular displacement sensor 43, a first proportional valve 44, a second proportional valve 45, and a third proportional valve 46.

[0022] The communication module 22 is connected to the programmable controller 21 and has a first communication interface 220. The first communication interface 220 is connected to the first unwinding servo driver 25, the second unwinding servo driver 26, the third unwinding servo driver 27, the fourth unwinding servo driver 28, the first calendering servo driver 29, the second calendering servo driver 31, the cooling roller servo driver 32, the traction servo driver 33, the storage servo driver 34, the first winding servo driver 35, and the second winding servo driver 36 via a network cable.

[0023] The expansion module 23 includes a gateway 231, an analog input module 232, and an analog output module 233. The analog input module 232 is connected to the gateway 231, and the analog output module 233 is connected to the analog input module 232. The gateway 231 has a third communication interface 2311 and a fourth communication interface 2312. The analog input module 232 has multiple analog input interfaces, and the analog output module 233 has multiple analog output interfaces.

[0024] The cooling roller tension sensor 37, traction roller tension sensor 38, winding tension sensor 39, first unwinding angular displacement sensor 41, second unwinding angular displacement sensor 42, and storage angular displacement sensor 43 are connected to multiple analog input interfaces via network cables. The first proportional valve 44, second proportional valve 45, and third proportional valve 46 are connected to multiple analog output interfaces via network cables.

[0025] The programmable controller 21 has a second communication interface 210, which is connected to a third communication interface 2311 via a network cable. The touch screen 24 is connected to a fourth communication interface 2312 via a network cable.

[0026] like Figure 1 , 2 As shown in Figure 4, the first unwinding servo driver 25 and the second unwinding servo driver 26 are electrically connected to the two unwinding motors 2 of one unwinding device 10, respectively; the third unwinding servo driver 27 and the fourth unwinding servo driver 28 are electrically connected to the two unwinding motors 2 of another unwinding device 10, respectively; the first calendering servo driver 29 and the second calendering servo driver 31 are electrically connected to the two calendering roller motors 4 of the composite device 20, respectively; the cooling roller servo driver 32 is electrically connected to the cooling roller motor 6; the traction servo driver 33 is electrically connected to the traction motor 9; the storage servo driver 34 is electrically connected to the storage motor 12; and the first winding servo driver 35 and the second winding servo driver 36 are electrically connected to the two winding motors 14 of the winding device 60, respectively.

[0027] like Figure 1 , 3 As shown in Figure 4, the first unwinding angular displacement sensor 41 is installed at the swing gear 16 of the floating swing roller mechanism 80 corresponding to an unwinding device 10. The first proportional valve 44 and the first unwinding angular displacement sensor 41 act on the same floating swing roller mechanism 80, and are installed at the air port of the low-friction cylinder 17 of the floating swing roller mechanism 80 to control the air intake. The first unwinding angular displacement sensor 41 detects the tension of the film released by an unwinding device 10 and transmits it to the programmable controller. The programmable controller 21 controls the operation of the corresponding first proportional valve 44 and the first unwinding servo driver 25 or the second unwinding servo driver 26 according to its detection result, so that the unwinding device 10 adjusts the tightness of the released film to ensure constant tension unwinding.

[0028] The second unwinding angular displacement sensor 42 is installed at the swing gear 16 of the floating swing roller mechanism 80 corresponding to the other unwinding device 10. The second proportional valve 45 and the second unwinding angular displacement sensor 42 act on the same floating swing roller mechanism 80, and are installed at the air port of the low-friction cylinder 17 of the floating swing roller mechanism 80 to control the air intake. The second unwinding angular displacement sensor 42 detects the tension of the film released by the other unwinding device 10 and transmits it to the programmable controller. The programmable controller 21 controls the operation of the corresponding second proportional valve 45 and the third unwinding servo driver 27 or the fourth unwinding servo driver 28 according to its detection result, so that the unwinding device 10 adjusts the tightness of the released film to ensure constant tension unwinding.

[0029] like Figure 1 , 4 As shown, several conveyor rollers arranged at intervals along the front-to-back direction are installed upstream of the cooling roller group 30. A cooling roller tension sensor 37 is installed at one of the conveyor rollers to detect the tension of the film passing over that conveyor roller. A traction roller tension sensor 38 is installed at one of the traction transition rollers 18 to detect the tension of the film passing over that traction transition roller 18. The cooling roller tension sensor 37 and the traction roller tension sensor 38 respectively transmit the tension of the passing film to the programmable controller 21. The programmable controller 21 controls the operation of each servo drive according to the detection results of each sensor, so that the two calendering rollers 3, multiple cooling rollers 5, lower traction roller 7, and the unwinding shafts 1 of the two unwinding devices 10 rotate synchronously at the same linear speed, avoiding speed mismatch that could cause failure of the two-layer film lamination, and effectively improving the production yield and product quality.

[0030] like Figure 1 , 3 As shown in Figure 4, the storage angular displacement sensor 43 is installed at the swing gear 16 of the floating swing roller mechanism 80 corresponding to the storage device 50, and the third proportional valve 46 is installed at the air port of the low-friction cylinder 17 of the floating swing roller mechanism 80 corresponding to the storage device 50 to control the air intake. The storage angular displacement sensor 43 detects the tension of the film conveyed to the storage device 50 and transmits the detection result to the programmable controller 21. The programmable controller 21 controls the operation of the third proportional valve 46 and the storage servo driver 34 according to its detection result, so that the storage device 50 can ensure stable film tension during storage and discharging.

[0031] like Figure 1 , 2As shown in Figure 4, the winding tension sensor 39 is installed at the tension roller 19 to detect the tension of the film passing around the tension roller 19. The winding tension sensor 39 transmits the detection result to the programmable controller 21, which controls the first winding servo driver 35 or the second winding servo driver 36 to work based on its detection structure, so that the winding device 60 ensures tension winding.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A car wrap film production line, comprising two unwinding machines, a laminating machine, a cooling roller group, a traction roller group, a material storage device, a winding machine, and a tension control system arranged sequentially from upstream to downstream, characterized in that, The two unwinding devices and the storage device are each equipped with a floating swing roller mechanism. Each floating swing roller mechanism includes a swing arm that swings up and down, a swing gear that swings synchronously with the swing arm, and a low-friction cylinder connected to the swing arm. The tension control system includes: a programmable controller, a communication module, an expansion module, a touch screen, multiple servo drivers, multiple tension sensors, multiple angular displacement sensors, and multiple proportional valves. The communication module is connected to the programmable controller and has a first communication interface. The multiple servo drivers are connected to the first communication interface via a network cable. The programmable controller has a second communication interface. The expansion module has a third communication interface, a fourth communication interface, multiple analog output interfaces, and multiple analog input interfaces. The second communication interface is connected to the third communication interface via a network cable. The touch screen is connected to the fourth communication interface via a network cable. The multiple tension sensors and the multiple angular displacement sensors are respectively connected to the multiple analog input interfaces via network cables. The multiple proportional valves are respectively connected to the multiple analog output interfaces via network cables. Each low-friction cylinder has a proportional valve installed at its air port, and each swing gear has an angular displacement sensor installed at its position.

2. The car wrap film production line according to claim 1, characterized in that, The expansion module includes a gateway, an analog input module, and an analog output module. The analog input module is connected to the gateway, and the analog output module is connected to the analog input module. The third communication interface and the fourth communication interface are located on the gateway, the multiple analog input interfaces are located on the analog input module, and the multiple analog output interfaces are located on the analog output module.

3. The car wrap film production line according to claim 1, characterized in that, Each of the unwinding devices includes two alternating unwinding shafts and two unwinding motors. Each unwinding motor is drivenly connected to one of the unwinding shafts, and each unwinding motor is electrically connected to one of the servo drives.

4. The car wrap film production line according to claim 1, characterized in that, The composite equipment includes two calendering rollers and two calendering roller motors. Each calendering roller motor is connected to one of the calendering rollers via a drive, and each calendering roller motor is electrically connected to one of the servo drivers.

5. The car wrap film production line according to claim 1, characterized in that, The cooling roller assembly includes a plurality of cooling rollers spaced apart in the front-to-back direction and a cooling roller motor for driving the plurality of cooling rollers to rotate synchronously. The cooling roller motor is electrically connected to a servo driver.

6. The car wrap film production line according to claim 5, characterized in that, The upstream of the cooling roller assembly is equipped with several conveying rollers arranged at intervals along the front-to-back direction, and one of the conveying rollers is equipped with a tension sensor.

7. The car wrap film production line according to claim 1, characterized in that, The traction roller assembly includes a lower traction roller, an upper traction roller that can move radially along the lower traction roller, and a traction motor that is drivenly connected to the lower traction roller. The traction motor is electrically connected to a servo driver.

8. The car wrapping film production line according to claim 7, characterized in that, The lower traction roller is equipped with a plurality of traction transition rollers arranged at intervals along the front-rear direction, and a tension sensor is installed at one of the traction transition rollers.

9. The car wrap film production line according to claim 1, characterized in that, The storage device includes multiple storage rollers arranged alternately up and down in a front-to-back direction and a storage motor for driving the multiple storage rollers to rotate synchronously. The storage motor is electrically connected to a servo driver.

10. The car wrap film production line according to claim 1, characterized in that, The winding device includes two winding shafts that wind alternately, two winding motors, and a tension roller located in front of the two winding shafts. Each winding motor is drivenly connected to one of the winding shafts and electrically connected to one of the servo drivers. A tension sensor is installed at the tension roller.

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