Automobile body film pasting production device

Abstract

The invention belongs to the technical field of thin film production, and particularly relates to an automobile body film pasting production device which comprises a discharging roller used for discharging an unprocessed thin film; the material collecting roller is used for collecting the processed thin film; the motor is used for rotating the receiving roller; the spraying unit is used for spraying a thin film; the cutting unit is used for cutting the film; the discharging roller, the spraying unit, the cutting unit and the receiving roller are arranged in sequence; the air suction unit comprises an air cylinder and a driving mechanism, the air cylinder comprises an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are both provided with one-way valves, the air inlet pipe is matched with the material collecting roller, and the driving mechanism is used for driving the air cylinder to operate. According to the scheme, the problem that air easily enters the winding roller during winding is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of film production, and in particular relates to a device for producing automobile body film. Background Art

[0002] Automotive body films typically use polymer materials such as polyethylene (PE), polyvinyl chloride (PVC), and polyethylene terephthalate (PET) as their base material. These materials offer excellent flexibility, durability, and transparency. To enhance functionality and durability, the film may be coated with one or more layers of specialized materials, such as UV absorbers, infrared reflectors, and anti-scratch coatings. Different coating formulations offer varying levels of protection and visual impact.

[0003] At present, a stable film cutting machine with the announcement number CN213107135U is available on the market. It includes a column and a transmission base fixedly mounted on the top of the front of the base, an adhesive box and a reel box provided on the top of the column, a mobile base provided on the top of the transmission base, and a telescopic column and a robotic arm provided on the top of the mobile base. This stable film cutting machine has a simple structure and strong practicality. It is equipped with multiple groups of conveyor rollers to assist in the smooth and stable transportation of the film; a linear guide motor to assist the cutting plate and cutter to press the film stably and quickly cut the film; an adsorption pad to assist in sucking the cut film to be wound to prevent it from curling and sticking together; a robotic arm and a mobile base to assist the reel to collect the cut film in an orderly manner; an adhesive box to spray adhesive on the reel surface of the curled film to be processed, so that the device can quickly, automatically and stably cut and reel the film, combining film cutting and reeling into one, thereby greatly improving film processing efficiency and reducing costs.

[0004] But there is also a problem: the winding roller is easily mixed with air during winding, resulting in reduced winding quality. Summary of the Invention

[0005] This solution provides a vehicle body film production device to solve the problem that air easily enters the winding roller during winding.

[0006] This solution provides a vehicle body film production device, including: Unwinding roller: used to release unprocessed film; Receiving roller: used to collect the film after processing; Motor: used to rotate the receiving roller; Spraying unit: used for spraying thin film; Cutting unit: used for cutting film; The unwinding roller, the spraying unit, the cutting unit and the receiving roller are arranged in sequence; Suction unit: The suction unit includes a cylinder and a driving mechanism. The cylinder includes an air inlet pipe and an air outlet pipe. Both the air inlet pipe and the air outlet pipe are provided with a one-way valve. The air inlet pipe cooperates with the receiving roller. The driving mechanism is used to drive the cylinder to operate.

[0007] The principle of this solution is as follows: the motor starts, the take-up roller rotates, the unwinding roller releases the unprocessed film, and the film is fed into the spraying unit through a series of guide wheels. The spraying unit applies the necessary coating to the film to enhance its functionality and durability. The cutting unit cuts the film according to the preset size to ensure the uniform specifications of the final product. While the take-up roller is winding the film, the suction unit starts to work. The drive cylinder operates to generate negative pressure. Air that may enter during the winding process is extracted through the air inlet pipe. Due to the installation of a one-way valve, air can only enter through the air inlet pipe and cannot flow back. The extracted air is discharged out of the system through the air outlet pipe to prevent air from being trapped between the film layers.

[0008] The beneficial effects of this solution are: 1. The suction unit can effectively extract the air that enters during the winding process, significantly reducing the air trapped between film layers and improving the winding quality.

[0009] 2. Reducing air entrapment can prevent film deformation caused by air expansion or contraction, thereby extending the service life of the product.

[0010] Furthermore, it also includes a workbench, which is used to place the film, and the workbench is located below the spraying unit and the cutting unit.

[0011] After spraying, the film is laid flat on the workbench to ensure that the sprayed surface is fully dry and flat. When the cutting unit performs cutting operations above the workbench, the workbench provides rigid support for the film to prevent uneven cuts caused by sagging or shaking.

[0012] Furthermore, the air outlet pipe is located below the film, and the air outlet pipe cooperates with the cutting unit.

[0013] Before the film is sprayed and enters the cutting process, the suction unit activates. A cylinder extracts air from the take-up roller or near the worktable through an air inlet pipe, reducing air entrapment. When entering the cutting process, an air outlet pipe discharges the extracted air beneath the film, directing it toward the cutting area. This air blowing removes debris and dust near the cutting area while also helping to cool the cut edge and prevent overheating and deformation.

[0014] Furthermore, the air inlet pipe is provided with a multi-hole nozzle, and the air outlet pipe is provided with a single-hole nozzle.

[0015] When the suction unit is started, the porous nozzle draws air from near the surface of the film; the dispersed suction port formed by multiple small holes can form a uniform negative pressure area without directly contacting the film, thereby adsorbing the film and making it flat.

[0016] During the cutting process, the nozzle releases high-speed airflow to sweep away debris, stabilize the film or assist in cooling; the single-hole design can enhance the airflow speed and directionality, and is suitable for scenes requiring local strong wind force.

[0017] Furthermore, it also includes a pressing block and a transmission roller. The cutting unit includes a telescopic cylinder and a cutting knife. The pressing block is fixedly connected to the telescopic rod of the telescopic cylinder. The cutting knife is fixedly connected to the telescopic rod. The pressing block cooperates with the transmission roller. The transmission roller is rotatably connected to the workbench. The transmission roller is used to guide the film.

[0018] The film is fed from the unwinding rollers, passes through the spray unit, and then lies flat on the workbench, guided by drive rollers. When cutting is required, the telescopic cylinder activates, driving the telescopic rod downward. The pressing block first contacts the film surface, securing it to the workbench and preventing it from slipping or shifting during cutting. The cutting blade then activates and cuts the film. Because the film is stabilized by the pressing block, the cutting path is straighter and the edges are cleaner. Once cutting is complete, the telescopic cylinder retracts, simultaneously raising the pressing block and cutting blade. The drive rollers continue to rotate, conveying the cut portion to the next process or to the winding area.

[0019] The pressing block of this mechanism presses the film before cutting, effectively preventing deviation or burrs caused by film movement during cutting, and is especially suitable for high-speed production lines.

[0020] Furthermore, the driving mechanism includes a pinion, a large gear and a rack, the cylinder includes a cylinder body, a return spring and a piston, the cylinder body is arranged in a workbench, the piston is slidably and sealedly connected to the cylinder body, the rack is fixedly connected to the piston, the rack is meshed with the large gear, the large gear is meshed with the pinion, and the pinion is fixedly connected to the transmission roller coaxially; One end of the return spring is fixedly connected to the piston, and the other end is fixedly connected to the cylinder body. The cylinder body and the workbench are rotationally connected through a torque spring, and the piston cooperates with the torque spring.

[0021] The torque spring is located in the middle of the cylinder. In the initial state, the piston is located on the left side of the rotation. Under the action of the torque spring and the gravity of the piston, the cylinder is parallel to the workbench, so that the rack is engaged with the large gear.

[0022] When the motor starts, the take-up roller rotates, releasing the film on the unwinding roller. The film passes through the transmission roller, causing the transmission roller to rotate. The rotation of the transmission roller drives the small gear to rotate, and the rotation of the small gear drives the large gear to rotate. The rotation of the large gear drives the rack to move to the right, and the movement of the rack to the right drives the piston to the right. The right movement of the piston causes negative pressure in the cylinder, and the air intake pipe sucks air towards the take-up roller to reduce the air entering the take-up roller.

[0023] When the piston reaches the set position on the right side of the rotation, the total weight on the right side of the rotation is greater than the total weight on the left side and the force of the torque spring, and the cylinder body starts to rotate, causing the rack to disengage from the large gear, and the motor stops running.

[0024] The telescopic cylinder activates, driving the telescopic rod downward. The pressing block first contacts the film surface, securing it to the workbench to prevent slippage or shifting during cutting. Simultaneously, due to the loss of meshing between the rack and the large gear, the return spring begins to move the piston to the left. The exhaust pipe aligns with the cutting blade to release air, cooling it and removing dust.

[0025] When the piston moves to the left to the set position, the total weight on the left and the force of the torque spring are greater than the total weight on the right. At this time, the cylinder returns to its original position, and the rack contacts the large gear. At this time, the return spring is still pulling the piston to the left, causing the rack to move left. The rack's leftward movement drives the large gear to reverse, which in turn drives the small gear to reverse. The small gear's reverse rotation drives the transmission roller to reverse, which straightens the film. Finally, the piston returns to its initial position, and the cutting blade begins cutting.

[0026] Those skilled in the art can adjust the size of the cylinder, the specifications of the torque spring and the weight of the piston to determine how often cutting is performed according to different occasions and needs.

[0027] The benefits of this mechanism are as follows: 1. Since the take-up roller actively rotates to move the film, when it stops, the unwinding roller will rotate again by a certain angle due to inertia, causing the film to become loose. This solution uses the pressing block to contact the drive roller to press the film, and then the drive roller reverses to tighten the film at the pressing point, ensuring that the film remains flat during cutting.

[0028] 2. The transmission roller rotates driven by the film, and then drives the small gear, large gear and rack to move, thereby realizing the movement of the cylinder piston. When the motor stops, the cylinder can automatically stop inhaling, realizing automation.

[0029] 3. This solution realizes the automatic disconnection and engagement of the rack by the movement of the piston on the left and right sides of the cylinder body. At the same time, only the last small part of the rack's return movement is engaged with the large gear, achieving a tightening effect.

[0030] Furthermore, it also includes a pressure sensor, which is fixedly connected to the workbench, electrically connected to the motor, and matched with the cylinder body.

[0031] When the cylinder body rotates, it will touch the pressure sensor, and at this time the pressure sensor will control the motor to stop running. When the cylinder body does not touch the pressure sensor, the pressure sensor will control the motor to delay starting.

[0032] Furthermore, it also includes a static eliminator, which is fixedly connected to the air inlet pipe and is used to eliminate static electricity on the film.

[0033] The static eliminator effectively neutralizes static electricity on the film surface, preventing dust particles from contaminating the film surface due to static adsorption, and improving the appearance quality of the final product.

[0034] Furthermore, the device also includes a fixed plate, which is fixedly connected to the workbench and positioned above the workbench. The telescopic cylinder is fixedly connected to the fixed plate. The fixed plate serves as an intermediate connector, installed above the workbench and securely connected to the workbench. It provides a sturdy mounting base for the telescopic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a state diagram of a car body film production device during spraying. Figure 2 This is a state diagram of a car body film production device during cutting. Figure 3 This is an enlarged view of a car body film production device.

[0036] The figures in the specification include: 1. workbench; 2. placement chamber; 3. material collection roller; 4. film; 5. laser cutting mechanism; 6. pressing block; 7. telescopic cylinder; 8. fixing plate; 9. multi-hole nozzle; 10. single-hole nozzle; 11. transmission roller; 12. small gear; 13. large gear; 14. exhaust pipe; 15. intake pipe; 16. pressure sensor; 17. push rod; 18. reset spring; 19. cylinder; 20. rack; 21. piston. DETAILED DESCRIPTION

[0037] As attached Figure 1 As shown: This solution provides a car body film production device, including a feed roller, a workbench 1, a spraying unit, a cutting unit and a receiving roller 3. The feed roller, the spraying unit, the cutting unit and the receiving roller 3 are placed in sequence from left to right. The feed roller and the receiving roller 3 are located on the same horizontal line, and the workbench 1 is slightly higher than the feed roller and the receiving roller 3.

[0038] The fixed plate 8 is fixedly connected to the workbench 1 and is located above the workbench 1. The film 4 passes from the unwinding roller through the workbench 1 to the receiving roller 3. The spraying unit and the cutting unit are located on the fixed plate 8.

[0039] The cutting unit includes a telescopic cylinder 7, a cutting knife and a pressing block 6. The telescopic cylinder 7 is fixed on a fixed plate 8. The cutting knife is a laser cutting mechanism 5. The push rod 17 of the telescopic cylinder 7 is fixedly connected to the laser cutting mechanism 5. The pressing block 6 is also fixedly connected to the push rod 17. The pressing block 6 is a U-shaped block that can press the film 4 on the left and right sides of the cutting knife. There are two transmission rollers 11 corresponding to the lower part of the pressing block 6.

[0040] like Figure 1 、 Figure 3 As shown: The transmission rollers 11 are disposed within the placement cavity 2 of the workbench 1. The workbench 1 is provided with through holes so that the transmission rollers 11 can contact the film 4 on the workbench 1. The two transmission rollers 11 are located on the same horizontal line and are provided with coaxial pinions 12. The pinions 12 mesh with large gears 13. The large gears 13 are rotatably connected to the workbench 1 and mesh with the rack 20.

[0041] The cylinder 19 includes a cylinder body, a return spring 18 and a piston 21. The rack 20 is fixedly connected to the piston 21. The middle part of the cylinder body is rotatably connected to the workbench 1 through a torque spring. The piston 21 is slidably and sealedly connected to the cylinder body. One end of the return spring 18 is fixedly connected to the cylinder body, and the other end is fixedly connected to the piston 21. The rotation angle of the cylinder 19 is 0-40° (0° refers to Figure 1 Parallel state, 40° refers to Figure 2 Tilt state) The cylinder body is equipped with an air inlet pipe 15 and an air outlet pipe 14, both of which are equipped with one-way valves (the air inlet pipe 15 can only take in air, and the air outlet pipe 14 can only take out air). The right end of the air inlet pipe 15 is equipped with a multi-hole nozzle 9, which is aligned with the contact point between the film 4 and the receiving roller 3. The right end of the air inlet pipe 15 is fixed to the right side of the workbench 1. The air outlet pipe 14 is equipped with a single-hole nozzle 10, which is located between the two drive rollers 11 and is aligned with the film 4 and the laser cutting mechanism 5 above. The air outlet pipe 14 is fixed to the workbench 1.

[0042] Pressure sensor 16 is fixedly connected to cavity 2 of workbench 1. It is located below the cylinder body and contacts it when the cylinder body rotates. In this solution, pressure sensor 16, the spray unit, telescopic cylinder 7, and the motor are all controlled by a controller. Those skilled in the art can adjust the cylinder body size, torque spring specifications, and piston 21 weight to determine the cutting frequency based on specific applications and requirements.

[0043] As attached Figure 1-3 As shown: During operation, the operator secures the film 4 from the unwinding roller to the take-up roller 3 via the workbench 1. The controller then activates the spray unit and motor. The motor rotates, driving the take-up roller 3, causing the film 4 to move on the workbench 1 while the spray unit begins spraying. Initially, the piston 21 is located to the left of the rotation point. The cylinder is parallel to the workbench 1 due to the torque of the torque spring and the weight of the piston 21, causing the rack 20 to mesh with the large gear 13. (See attached diagram.) Figure 1 shown).

[0044] As film 4 moves on workbench 1, drive roller 11 rotates, which in turn drives pinion 12, which in turn drives gear 13, which in turn drives rack 20 to the right, causing piston 21 to move rightward. Negative pressure is generated in the cylinder, and air intake pipe 15 draws air toward the receiving roller 3, reducing the amount of air that enters the receiving roller 3.

[0045] When the piston 21 reaches the set position on the right side of the rotation, the total weight on the right side of the rotation is greater than the total weight on the left side and the force of the torque spring, the cylinder body starts to rotate, causing the rack 20 to be disengaged from the large gear 13, and the cylinder body hits the pressure sensor 16, which sends an electrical signal, and the controller controls the motor and the spray unit to stop running (as shown in the attached figure). Figure 2 shown).

[0046] The controller activates telescopic cylinder 7, driving the telescopic rod downward. Pressing block 6 first contacts the surface of film 4, securing it to workbench 1 to prevent slippage or shifting during cutting. Simultaneously, due to the loss of meshing between rack 20 and gear 13, return spring 18 begins to move piston 21 leftward. Exhaust pipe 14 aligns with laser cutting mechanism 5 to release air, cooling it and removing dust.

[0047] When the piston 21 moves to the left to the set position, the total weight on the left and the force of the torque spring are greater than the total weight on the right. At this time, the cylinder returns to its original position, and the rack 20 contacts the large gear 13. At this time, the return spring 18 is still moving the piston 21 to the left, causing the rack 20 to move left. The leftward movement of the rack 20 drives the large gear 13 to reverse, and the reversal of the large gear 13 drives the reversal of the small gear 12. The reversal of the small gear 12 drives the reversal of the transmission roller 11. The reversal of the transmission roller 11 straightens the film 4. Finally, the piston 21 returns to its initial state, and the laser cutting mechanism 5 emits the laser to cut.

[0048] After the cutting is completed, the controller controls the push rod 17 of the telescopic cylinder 7 to move upward, so that the pressing block 6 and the laser cutting mechanism 5 move upward. After the operator replaces the receiving roller 3, the motor and the spraying unit are delayed to start, and this is repeated.

[0049] The beneficial effects of this solution are: 1. The suction unit can effectively extract the air that enters during the winding process, significantly reducing the air trapped between the four layers of film and improving the winding quality.

[0050] 2. Reducing air entrapment can prevent deformation of the film 4 caused by air expansion or contraction, thereby extending the service life of the product.

[0051] 3. The air blowing from the air outlet pipe 14 can remove the debris and dust near the cutting area, and at the same time help cool the cutting edge to prevent overheating and deformation.

[0052] 4. In this solution, after the pressing block 6 contacts the transmission roller 11 to press the film 4, the transmission roller 11 is reversed to tighten the film 4 at the pressing position, ensuring that the film 4 is in a flat state during cutting, thereby avoiding the unevenness of the film 4 during cutting, which leads to a decrease in cutting quality.

[0053] 5. The transmission roller 11 rotates driven by the film 4, and then drives the small gear 12, the large gear 13 and the rack 20 to move, thereby realizing the movement of the piston 21 of the cylinder 19. When the motor stops, the cylinder 19 can automatically stop inhaling, realizing automation.

[0054] 6. This solution realizes the automatic disconnection and engagement of the rack 20 by the movement of the piston 21 on the left and right sides of the cylinder body rotation. At the same time, only the last small part of the rack 20 moving back is engaged with the large gear 13, achieving a tightening effect.

[0055] The above is only an embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A vehicle body film production device, comprising: Feed roller: used to discharge the unprocessed film (4); Receiving roller (3): used to collect the processed film (4); Motor: used to rotate the receiving roller (3); Spraying unit: for spraying thin film (4); Cutting unit: for cutting film (4); The unwinding roller, the spraying unit, the cutting unit and the receiving roller (3) are arranged in sequence; It is characterized by further comprising: Suction unit: The suction unit includes a cylinder (19) and a driving mechanism. The cylinder (19) includes an air inlet pipe (15) and an air outlet pipe (14). Both the air inlet pipe (15) and the air outlet pipe (14) are provided with a one-way valve. The air inlet pipe (15) cooperates with the receiving roller (3). The driving mechanism is used to drive the cylinder (19) to operate.

2. The automobile body film production device according to claim 1, characterized in that: It also includes a workbench (1), which is used to place the film (4), and the workbench (1) is located below the spraying unit and the cutting unit.

3. The automobile body film production device according to claim 2, characterized in that: The air outlet pipe (14) is located below the film (4), and the air outlet pipe (14) cooperates with the cutting unit.

4. The automobile body film production device according to claim 3, characterized in that: The air inlet pipe (15) is provided with a multi-hole nozzle (9), and the air outlet pipe (14) is provided with a single-hole nozzle (10).

5. The automobile body film production device according to claim 2, characterized in that: It also includes a pressing block (6) and a transmission roller (11), and the cutting unit includes a telescopic cylinder (7) and a cutting knife. The pressing block (6) is fixedly connected to the telescopic rod of the telescopic cylinder (7), and the cutting knife is fixedly connected to the telescopic rod. The pressing block (6) cooperates with the transmission roller (11), and the transmission roller (11) is rotatably connected to the workbench (1). The transmission roller (11) is used to guide the film (4).

6. The automobile body film production device according to claim 5, characterized in that: The driving mechanism comprises a pinion (12), a large gear (13) and a rack (20); the cylinder (19) comprises a cylinder body, a return spring (18) and a piston (21); the cylinder body is arranged in the workbench (1); the piston (21) is slidingly and sealingly connected to the cylinder body; the rack (20) is fixedly connected to the piston (21); the rack (20) is meshed with the large gear (13); the large gear (13) is meshed with the pinion (12); and the pinion (12) is coaxially and fixedly connected to the transmission roller (11); One end of the return spring (18) is fixedly connected to the piston (21), and the other end is fixedly connected to the cylinder body. The cylinder body and the workbench (1) are rotationally connected via a torque spring, and the piston (21) cooperates with the torque spring.

7. The automobile body film production device according to claim 6, characterized in that: It also includes a pressure sensor (16), the pressure sensor (16) is fixedly connected to the workbench (1), the pressure sensor (16) is electrically connected to the motor, and the pressure sensor (16) is matched with the cylinder body.

8. The automobile body film production device according to claim 1, characterized in that: It also includes a static eliminator, which is fixedly connected to the air inlet pipe (15) and is used to eliminate static electricity on the film (4).

9. The automobile body film production device according to claim 5, characterized in that: It also includes a fixed plate (8), the fixed plate (8) is fixedly connected to the workbench (1), and the fixed plate (8) is located above the workbench (1), and the telescopic cylinder (7) is fixedly connected to the fixed plate (8).

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