A winding apparatus for CPP film

Abstract

The utility model relates to a kind of winding equipment for CPP film, relate to film production technical field, including frame, motor being set on frame, winding roller for driving film winding driven by motor, double-layer compression roller for flattening film is set on frame, it is characterized by: frame is provided with edge curling flattening mechanism, edge curling flattening mechanism includes connecting sleeve, the ball abutting in connecting sleeve, the abutting plate for supporting film is set on frame, longitudinal telescopic component for driving ball to press film is set on abutting plate, and horizontal telescopic piece for driving ball horizontal movement is set between connecting sleeve and longitudinal telescopic component. The utility model can pass through edge curling flattening mechanism, before film enters double-layer compression roller, to the preliminary flattening and correction of edge curling portion, by pre-treatment edge curling, can prevent edge curling portion from being excessively extruded when entering compression roller, to avoid edge curling problem deterioration.

Description

Technical Field

[0001] This application relates to the field of film production technology, and in particular to a winding device for CPP film. Background Technology

[0002] CPP (cast polypropylene film) is a non-stretched, non-oriented flat extrusion film produced through a melt casting and rapid cooling process. It is mainly used in food packaging and daily necessities packaging. As a winding device for CPP film, it winds the film material continuously output from the production line from a flat state into a compact cylindrical roll. Through precise mechanical design and intelligent control, the flexible film material is transformed into a standardized industrial product, and its performance directly affects the quality and efficiency of subsequent processing.

[0003] In existing CPP film winding equipment, winding is the final critical step in the CPP film production process, and its quality directly affects the subsequent use of the film. However, existing winding equipment mainly relies on traditional flattening mechanisms to remove wrinkles from the film, that is, to remove wrinkles by passing the film through two pressure rollers. This method has limitations when dealing with edge curling problems. When the film has curled edges, the curled edges are subjected to greater extrusion and friction as they pass through the pressure rollers. This causes the curled edges to be further compacted, and may even make the curling more severe, forming deeper creases or curling. Edge curling problems can lead to uneven winding of the film during the winding process, thereby affecting the neatness and stability of the winding and increasing the difficulty of subsequent processing.

[0004] Therefore, it is necessary to propose a winding device for CPP film to solve the above problems. Utility Model Content

[0005] This application provides a winding device for CPP film. In order to improve the technical problem in the related technology that when the film has a curling problem, the edge of the film is subjected to greater extrusion and friction when passing through the pressure roller, which will cause the curled part to be further compacted, thereby affecting the neatness and stability of the winding.

[0006] This application provides a winding device for CPP film, including a frame, a motor mounted on the frame, a winding roller driven by the motor to drive the film winding, a double-layer pressure roller mounted on the frame for flattening the film, an edge-curling and flattening mechanism mounted on the frame, the edge-curling and flattening mechanism including a connecting sleeve, a ball bearing abutting within the connecting sleeve, an abutting plate mounted on the frame for supporting the film, a longitudinal telescopic component mounted on the abutting plate to drive the ball bearing to press the film, and a transverse telescopic component mounted between the connecting sleeve and the longitudinal telescopic component for driving the ball bearing to move horizontally.

[0007] The technical solutions described above in this application embodiment have at least the following technical effects: When a user uses a winding device to wind up a film, the film first passes through the edge-flattening mechanism on the abutment plate, enters the gap between the double-layer pressure rollers, and is finally wound onto the winding roller. The winding roller is driven by a motor to rotate and wind up the film. The longitudinal telescopic component is adjusted to press the film onto the abutment plate, and the transverse telescopic component drives the connecting sleeve to move horizontally, causing the balls inside the connecting sleeve to roll. During the transverse rolling of the balls, the balls generate traction force on the film in the transverse direction, flattening the edge of the film. This does not affect the film winding operation and can also prevent edge curling on the film horizontally. The edge-flattening mechanism on the abutment plate can perform preliminary flattening and correction of the edge before the film enters the double-layer pressure rollers. By pre-treating the edge, excessive compression of the edge when it enters the pressure rollers can be prevented, thus avoiding the deterioration of the edge curling problem. At the same time, during the process of the balls rotating to flatten the film, the movement range of the balls is always on the film, avoiding possible damage to the film during the pushing process.

[0008] In this embodiment, the longitudinal telescopic component includes a connecting frame disposed on the abutment plate, a guide rod disposed within the connecting frame, a guide block sleeved on the guide rod, and an abutment spring sleeved on the guide rod and abutting against the guide block. One end of the transverse telescopic member is disposed on the guide block.

[0009] With this technical solution, when the film needs to be pressed onto the abutment plate, the guide block is manually lifted upwards. The guide block compresses the abutment spring, and the guide block drives the lateral telescopic component to move upwards. After the film is placed under the ball bearing, the guide block is released, so that the guide block abuts the film under the action of the abutment spring. This can adapt to films of different thicknesses and prevent curling.

[0010] In this embodiment, the lateral telescopic component is a pneumatic cylinder or a hydraulic cylinder.

[0011] This technical solution enables the cylinders and hydraulic cylinders to provide precise linear motion control, ensuring the horizontal movement accuracy of the connecting sleeve. This is crucial for the anti-rolling operation of the film, as even slight positional deviations can lead to roll-up problems.

[0012] In this embodiment, the frame is further provided with a compensating cleaning component, which includes a fixed shaft fixed on the frame, a rotating shaft disposed on the fixed shaft and rotating around the fixed shaft, a cleaning roller disposed on the rotating shaft at one end away from the fixed shaft, and an elastic telescopic component disposed at one end on the frame and the other end on the rotating shaft.

[0013] This technical solution involves a cleaning roller driven by a rotating shaft to compensate for film damage during the film's winding process on the take-up roller. As the diameter of the film on the take-up roller increases, an elastic telescopic component extends to compensate for and flatten the film while simultaneously winding it up. By introducing the elastic telescopic component and the cleaning roller, both compensating cleaning and flattening of the film can be achieved, thereby improving the film's winding quality and overall performance. This design not only maintains the film's cleanliness and flatness but also adapts to different winding diameters, reducing film damage and improving production efficiency.

[0014] In this embodiment, the elastic telescopic component includes a fixed sleeve rotatably mounted on the frame, a telescopic rod telescopically mounted within the fixed sleeve, and a telescopic spring sleeved on the fixed sleeve and the telescopic rod.

[0015] This technical solution allows the telescopic rod to extend and retract within a fixed sleeve, providing precise linear motion control.

[0016] In this embodiment, a connecting roller is provided on the frame, and a tension sensor for controlling the rotation speed of the motor is connected to one end of the connecting roller.

[0017] This technical solution involves the film, after exiting the pressure roller, first passing through a connecting roller and then onto a take-up roller. The film tension is transmitted via the connecting roller to a tension sensor, which forms a closed-loop feedback system with the motor control system. When the sensor detects a change in tension, it immediately feeds back to the motor control system. The motor adjusts its speed based on the feedback signal to maintain constant tension. This closed-loop control method enables high-precision tension adjustment, ensuring consistent film quality.

[0018] In this embodiment, the ball is made of hollow silicone rubber material.

[0019] This technical solution utilizes the excellent elasticity of silicone rubber material, and the hollow structure further enhances its flexibility. The ball provides a gentle contact during rolling, avoiding rigid impact on the film and reducing the risk of film damage. The hollow structure significantly reduces the weight of the ball, thereby reducing its inertial force during rolling. This helps improve the ball's response speed, enabling it to adapt to changes in the film's position more quickly and achieve more precise horizontal anti-rolling operation. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of a CPP film winding device provided in an embodiment of this application. Figure 1 ;

[0021] Figure 2A three-dimensional structural diagram of a CPP film winding device provided in an embodiment of this application. Figure 2 ;

[0022] Figure 3 A three-dimensional structural schematic diagram of the take-out frame of a CPP film winding device provided in an embodiment of this application;

[0023] Figure 4 A three-dimensional structural diagram of the edge-rolling and flattening mechanism provided in an embodiment of this application;

[0024] Figure 5 This is a cross-sectional structural diagram of the connecting sleeve provided in an embodiment of this application.

[0025] The following are the labeling elements in the figure:

[0026] 1. Frame; 11. Motor; 12. Take-up roller; 13. Pressure roller; 2. Edge curling and flattening mechanism; 21. Connecting sleeve; 22. Ball bearing; 23. Abutment plate; 24. Longitudinal telescopic assembly; 241. Connecting frame; 242. Guide rod; 243. Guide block; 244. Abutment spring; 25. Lateral telescopic component; 3. Compensating cleaning component; 31. Fixed shaft; 32. Rotating shaft; 33. Cleaning roller; 34. Elastic telescopic component; 341. Fixed sleeve; 342. Telescopic rod; 343. Telescopic spring; 4. Connecting roller; 41. Tension sensor. Detailed Implementation

[0027] In existing CPP film winding equipment, winding is the final critical step in the CPP film production process, and its quality directly affects the subsequent use of the film. However, existing winding equipment mainly relies on traditional flattening mechanisms to remove wrinkles from the film, that is, to remove wrinkles by passing the film through two pressure rollers. This method has limitations when dealing with edge curling problems. When the film has curled edges, the curled edges are subjected to greater extrusion and friction as they pass through the pressure rollers. This causes the curled edges to be further compacted, and may even make the curling more severe, forming deeper creases or curling. Edge curling problems can lead to uneven winding of the film during the winding process, thereby affecting the neatness and stability of the winding and increasing the difficulty of subsequent processing.

[0028] Based on this, in order to improve the technical problem in the related technology that when the film curls, the edge of the rolled-up film is subjected to greater squeezing and friction when passing through the pressure roller, which will cause the curled part to be further compacted, thus affecting the neatness and stability of the winding, the embodiments of this application provide the following solution.

[0029] Please refer to the following: Figures 1 to 5This application provides a winding device for CPP film. The winding device for CPP film includes a frame 1, a motor 11 mounted on the frame 1, a winding roller 12 driven by the motor 11 for winding the film, and a double-layer pressure roller 13 mounted on the frame 1 for flattening the film. The device is characterized in that: the frame 1 is provided with an edge-curling and flattening mechanism 2, which includes a connecting sleeve 21, a ball bearing 22 abutting inside the connecting sleeve 21, an abutting plate 23 mounted on the frame 1 for supporting the film, a longitudinal telescopic component 24 mounted on the abutting plate 23 for pressing the film with the ball bearing 22, and a transverse telescopic component 25 mounted between the connecting sleeve 21 and the longitudinal telescopic component 24 for moving the ball bearing 22 horizontally.

[0030] This application provides a winding device for CPP film. During the winding process, the user first passes the film through the edge-flattening mechanism 2 on the abutment plate 23, then into the gap between the double-layer pressure rollers 13, and finally winds it onto the winding roller 12. The motor 11 drives the winding roller 12 to rotate and wind the film. The longitudinal telescopic component 24 is adjusted to press the film firmly onto the abutment plate 23. The transverse telescopic component 25 drives the connecting sleeve 21 to move horizontally, causing the balls 22 inside the connecting sleeve 21 to roll. This does not affect the film winding operation and also provides horizontal anti-edge-curling operation. The edge-flattening mechanism 2 on the abutment plate 23 can preliminarily flatten and correct the curled edge before the film enters the double-layer pressure rollers 13. By pre-treating the curled edge, excessive compression can be prevented when it enters the pressure rollers 13, thus avoiding the worsening of the curling problem. Thus, the improved design can adapt to films of different thicknesses and materials through the dynamic adjustment of longitudinal and transverse telescopic components. By introducing improvements such as the edge-curling and flattening mechanism 2 on the abutment plate 23 and the transverse telescopic component 25 into the winding equipment, edge-curling problems can be effectively prevented, the flatness and quality of the film can be improved, film damage can be reduced, production efficiency can be increased, and film quality control can be enhanced.

[0031] In this embodiment, the longitudinal telescopic component 24 includes a connecting frame 241 disposed on the abutment plate 23, a guide rod 242 disposed in the connecting frame 241, a guide block 243 sleeved on the guide rod 242, and an abutment spring 244 sleeved on the guide rod 242 and abutting against the guide block 243. One end of the transverse telescopic component 25 is disposed on the guide block 243.

[0032] With this configuration, when the film needs to be pressed onto the abutment plate 23, manually lifting the guide block 243 compresses the abutment spring 244. The guide block 243 then moves the lateral telescopic member 25 upwards, placing the film under the ball bearing 22. Releasing the guide block 243 allows it to abut the film under the action of the abutment spring 244, accommodating films of different thicknesses and preventing edge curling. By manually lifting the guide block 243, the operator can make precise adjustments based on the actual state and position of the film. This manual adjustment method ensures that the film is accurately positioned under the ball bearing 22 before entering the pressure roller 13, avoiding winding problems caused by positional deviations.

[0033] In this embodiment, the lateral telescopic member 25 is a cylinder or a hydraulic cylinder.

[0034] With this configuration, the pneumatic and hydraulic cylinders can provide precise linear motion control, ensuring the horizontal movement accuracy of the connecting sleeve 21. This is crucial for the anti-rolling operation of the film, as even slight positional deviations can lead to roll-up problems.

[0035] In this embodiment, the frame 1 is also provided with a compensating cleaning component 3. The compensating cleaning component 3 includes a fixed shaft 31 fixed on the frame 1, a rotating shaft 32 disposed on the fixed shaft 31 and rotating around the fixed shaft 31, a cleaning roller 33 disposed on the rotating shaft 32 at one end away from the fixed shaft 31, and an elastic telescopic component 34 disposed at one end on the frame 1 and the other end on the rotating shaft 32.

[0036] With this configuration, during the film winding process on the take-up roller 12, the cleaning roller 33, driven by the rotating shaft 32, performs compensatory cleaning on the film on the take-up roller 12. As the diameter of the film being wound on the take-up roller 12 increases, the elastic telescopic member 34 extends to compensate and flatten the film while simultaneously winding it up. By introducing the elastic telescopic member 34 and the cleaning roller 33, compensatory cleaning and flattening of the film can be achieved, thereby improving the winding quality and overall performance of the film. This design not only maintains the cleanliness and flatness of the film but also adapts to different winding diameters, reducing film damage and improving production efficiency.

[0037] In this embodiment, the elastic telescopic member 34 includes a fixed sleeve 341 rotatably mounted on the frame 1, a telescopic rod 342 telescopically mounted within the fixed sleeve 341, and a telescopic spring 343 sleeved on the fixed sleeve 341 and the telescopic rod 342.

[0038] With this configuration, the telescopic rod 342 can extend and retract within the fixed sleeve 341, providing precise linear motion control. The telescopic spring 343, fitted onto the fixed sleeve 341 and the telescopic rod 342, can provide dynamic clamping force according to changes in film tension and winding diameter. As the winding diameter increases, the spring will correspondingly extend or compress to adapt to changes in film length, ensuring a consistent flattening effect.

[0039] In this embodiment, a connecting roller 4 is provided on the frame 1, and a tension sensor 41 for controlling the rotation speed of the motor 11 is connected to one end of the connecting roller 4.

[0040] With this configuration, after the film exits from the pressure roller 13, it first passes through the connecting roller 4 and is then transferred to the winding roller 12. The tension of the film is transmitted to the tension sensor 41 via the connecting roller 4. The tension sensor 41 can monitor the tension changes of the film in real time during the winding process. By accurately measuring the tension of the film, any tension fluctuations can be detected and corrected in a timely manner, ensuring that the film maintains a constant tension throughout the winding process.

[0041] In this embodiment, the ball 22 is made of hollow silicone rubber material.

[0042] With this design, the silicone rubber material has excellent elasticity, and the hollow structure further enhances its flexibility. The ball 22 can provide a gentle contact during rolling, avoiding rigid impact on the film and reducing the risk of film damage. The hollow structure significantly reduces the weight of the ball 22, thereby reducing its inertial force during rolling. This helps to improve the response speed of the ball 22, enabling it to adapt to changes in the film's position more quickly and achieve more precise horizontal anti-rolling operation.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A winding device for CPP film, comprising a frame (1), a motor (11) mounted on the frame (1), a winding roller (12) driven by the motor (11) for driving film winding, and a double-layer pressure roller (13) mounted on the frame (1) for flattening the film, characterized in that: The frame (1) is provided with an edge-rolling and flattening mechanism (2), which includes a connecting sleeve (21), a ball bearing (22) abutting inside the connecting sleeve (21), an abutting plate (23) on the frame (1) for supporting the film, a longitudinal telescopic component (24) on the abutting plate (23) for pressing the film with the ball bearing (22), and a transverse telescopic component (25) between the connecting sleeve (21) and the longitudinal telescopic component (24) for moving the ball bearing (22) horizontally.

2. The winding device for CPP film according to claim 1, characterized in that: The longitudinal telescopic component (24) includes a connecting frame (241) disposed on the abutment plate (23), a guide rod (242) disposed in the connecting frame (241), a guide block (243) sleeved on the guide rod (242), and an abutment spring (244) sleeved on the guide rod (242) and abutting against the guide block (243). One end of the transverse telescopic component (25) is disposed on the guide block (243).

3. The winding device for CPP film according to claim 1, characterized in that: The lateral telescopic component (25) is a cylinder or a hydraulic cylinder.

4. A winding device for CPP film according to claim 1, 2, or 3, characterized in that: The frame (1) is also provided with a compensating cleaning component (3), which includes a fixed shaft (31) fixed on the frame (1), a rotating shaft (32) mounted on the fixed shaft (31) and rotating around the fixed shaft (31) as the center, a cleaning roller (33) mounted on the rotating shaft (32) at one end away from the fixed shaft (31), and an elastic telescopic component (34) with one end mounted on the frame (1) and the other end mounted on the rotating shaft (32).

5. A winding device for CPP film according to claim 4, characterized in that: The elastic telescopic component (34) includes a fixed sleeve (341) rotatably mounted on the frame (1), a telescopic rod (342) telescopically mounted inside the fixed sleeve (341), and a telescopic spring (343) sleeved on the fixed sleeve (341) and the telescopic rod (342).

6. A winding device for CPP film according to claim 1, 2, or 3, characterized in that: A connecting roller (4) is provided on the frame (1), and a tension sensor (41) for controlling the rotation speed of the motor (11) is connected to one end of the connecting roller (4).

7. A winding device for CPP film according to claim 1, characterized in that: The ball (22) is made of hollow silicone rubber material.

Images