Retractable film winding device

Abstract

The utility model discloses a contractile film winding device which comprises a mounting frame and a wind-up roll, a positioning seat is rotatably mounted on the mounting frame, a mounting seat is slidably mounted on the mounting frame, a roller is rotatably mounted on the mounting seat, a plurality of groups of annularly distributed breathable nets are embedded in the roller, the roller and the wind-up roll are correspondingly arranged, and the wind-up roll is arranged on the mounting seat. A first sliding rod is fixedly mounted on the mounting frame, the mounting base is slidably connected with the first sliding rod in a sleeving mode, the first sliding rod is sleeved with two sets of symmetrically-distributed first springs, and certain pressure is applied to a contractile film which is being wound on the winding roller through cooperation of the mounting base and the roller with the first sliding rod and the first springs; looseness of the contractile film is avoided under the condition that the winding tension is not large, meanwhile, the temperature of the surface of the contractile film is monitored in real time through an external temperature sensor and the like, certain cooling gas is introduced into the roller through the two sets of connecting pipes, and tensile deformation caused by high temperature in the film winding process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of thin film winding technology, specifically a shrinkable thin film winding device. Background Technology

[0002] Shrinkable films utilize the energy stored in the film when stretched longitudinally or laterally in a highly elastic state. They take advantage of the memory effect of thermoplastics on the shape before biaxial or uniaxial stretching, allowing them to recover their original shape when exposed to heat to achieve packaging purposes. The shrinkage of the film is determined by the degree of stretching it undergoes during the orientation process, and the heat shrinkage rate reflects its heat shrinkage performance. After production, shrinkable films require a winding device to complete the film winding.

[0003] In the prior art, excessively high temperature, insufficient cooling, or excessive winding tension during the shrink film winding process can all lead to stretching and deformation of the film, affecting the final product quality of the shrink film. On the other hand, low winding tension can cause the film to become loose during the winding process, affecting the film winding quality. Utility Model Content

[0004] The purpose of this invention is to provide a shrinkable film winding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shrinkable film winding device, comprising a mounting frame and a take-up roller. A positioning seat is rotatably mounted on the mounting frame, and a cover plate is fixedly mounted on the positioning seat. Three sets of annularly distributed locking rods are provided between the positioning seat and the cover plate. Three sets of annularly distributed locking grooves are provided on the take-up roller. The locking rods are movably engaged with the take-up roller through the locking grooves. A mounting base is slidably mounted on the mounting frame, and a roller is rotatably mounted on the mounting base. Multiple sets of annularly distributed breathable meshes are embedded on the roller. The roller and the take-up roller are correspondingly arranged. A first sliding rod is fixedly mounted on the mounting frame, and the mounting base and the first sliding rod are slidably sleeved. Two sets of symmetrically distributed first springs are sleeved on the first sliding rod. The two ends of the two sets of first springs are respectively fixedly connected to the mounting base and the mounting frame. A scraper is rotatably mounted on the mounting base, and the scraper is in contact with the surface of the roller. A movable seat corresponding to the scraper is slidably mounted on the mounting base, and a cleaning rubber plate is provided on the movable seat. The cleaning rubber plate is in contact with the scraper.

[0006] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed connecting pipes are fixedly installed on the mounting base, and the two ends of the roller are rotatably connected to the two sets of connecting pipes respectively. A driven wheel is sleeved on the roller, and a driving wheel is rotatably installed on the mounting base. A belt is provided on the mounting base, and the belt is connected to the driving wheel and the driven wheel respectively.

[0007] As a further preferred embodiment of this technical solution, a turntable is rotatably installed inside the positioning seat, a first gear is sleeved on the turntable, a first rack is slidably installed inside the positioning seat, the first rack meshes with the first gear, an annular tooth is fixedly installed on the turntable, and sliders are fixedly installed on each of the three sets of clamping rods. The cover plate has three sets of sliding grooves corresponding to the clamping rods, the sliders are slidably connected to the cover plate through the sliding grooves, and the sliders are meshed with the turntable through the annular teeth.

[0008] As a further preferred embodiment of this technical solution, a second gear is sleeved on the scraper, and a second rack is slidably installed in the mounting base, with the second rack meshing with the second gear.

[0009] As a further preferred embodiment of this technical solution, the mounting base is provided with a lead screw, the two ends of which pass through the mounting base and are rotatably connected to the mounting base through bearings, and the lead screw passes through the movable base and is threadedly connected to the movable base.

[0010] As a further preferred embodiment of this technical solution, the cleaning rubber plate is slidably connected to the movable seat via a stop block. A second slide rod is fixedly installed inside the movable seat. Two sets of symmetrically distributed second springs are sleeved on the second slide rod. The stop block is slidably sleeved with the second slide rod. The two ends of the two sets of second springs are fixedly connected to the stop block and the movable seat, respectively. A cam is rotatably installed inside the movable seat. The cam is fitted against the stop block.

[0011] This utility model provides a shrinkable film winding device, which has the following beneficial effects:

[0012] (1) This utility model uses the mounting base and roller, along with the first slide rod and the first spring, to apply a certain pressure to the shrinkable film being wound on the take-up roller. This prevents the shrinkable film from becoming loose when the winding tension is not too high. At the same time, an external temperature sensor monitors the temperature of the shrinkable film surface in real time, and a certain amount of cooling gas is introduced into the roller through two sets of connecting pipes. The gas passes through the breathable mesh and is applied to the shrinkable film that is being wound and is in contact with the roller surface, preventing the film from being stretched and deformed due to high temperature during the winding process. During the winding process, the roller rotates and the film is wound. The roller rotates on the mounting frame in the same direction as the film winding direction. The roller provides a certain degree of smoothing effect to the film, maintaining a smooth winding effect.

[0013] (2) This utility model uses the scraper and cleaning rubber plate to clean the impurities adhering to the roller surface, so as to avoid the damage to the film surface caused by particulate impurities adhering to the roller in contact with the film during the film winding process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the structural separation of the positioning seat and the winding roller of this utility model;

[0016] Figure 3 This is a schematic diagram showing the separation of the positioning seat and the locking rod of this utility model;

[0017] Figure 4 This is a schematic diagram showing the structural separation of the mounting base and the roller of this utility model;

[0018] Figure 5 This is a schematic diagram showing the structural separation of the mounting base and scraper of this utility model;

[0019] Figure 6 For the present utility model Figure 5 Enlarged structural diagram at point A;

[0020] Figure 7 This is a cross-sectional view of the roller of this utility model;

[0021] In the diagram: 1. Mounting bracket; 2. Positioning seat; 3. Take-up roller; 4. Locking rod; 5. Locking groove; 6. Cover plate; 7. Slide groove; 8. Turntable; 9. First gear; 10. First rack; 11. Ring gear; 12. Slider; 13. Mounting seat; 14. First slide rod; 15. First spring; 16. Roller; 17. Ventilation mesh; 18. Driven wheel; 19. Drive wheel; 20. Belt; 21. Connecting pipe; 22. Scraper; 23. Second gear; 24. Second rack; 25. Moving seat; 26. Lead screw; 27. Cleaning rubber plate; 28. Abutment; 29. ​​Second slide rod; 30. Second spring; 31. Cam. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1-4As shown, in this embodiment, a shrinkable film winding device includes a mounting frame 1 and a take-up roller 3. A positioning seat 2 is rotatably mounted on the mounting frame 1, and a cover plate 6 is fixedly mounted on the positioning seat 2. Three sets of annularly distributed locking rods 4 are provided between the positioning seat 2 and the cover plate 6. Three sets of annularly distributed locking grooves 5 are provided on the take-up roller 3. The locking rods 4 are movably engaged with the take-up roller 3 through the locking grooves 5. A mounting base 13 is slidably mounted on the mounting frame 1, and a roller 16 is rotatably mounted on the mounting base 13. Multiple sets of annularly distributed breathable meshes 17 are embedded in the roller 16. The roller 16 is correspondingly arranged with the take-up roller 3. A first sliding rod 14 is fixedly mounted on the mounting frame 1, and the mounting base 13 is slidably sleeved with the first sliding rod 14. Two sets of symmetrically distributed first springs 15 are sleeved on the first sliding rod 14. The two ends of the two sets of first springs 15 are fixedly connected to the mounting base 13 and the mounting bracket 1, respectively. A scraper 22 is rotatably mounted on the mounting base 13, and the scraper 22 is in contact with the surface of the roller 16. A movable seat 25 corresponding to the scraper 22 is slidably mounted on the mounting base 13. A cleaning rubber plate 27 is provided on the movable seat 25, and the cleaning rubber plate 27 is in contact with the scraper 22. Two sets of symmetrically distributed connecting pipes 21 are fixedly mounted on the mounting base 13. The two ends of the roller 16 are rotatably connected to the two sets of connecting pipes 21, respectively. A driven wheel 18 is sleeved on the roller 16. A driving wheel 19 is rotatably mounted on the mounting base 13. A belt 20 is provided on the mounting base 13, and the belt 20 is connected to the driving wheel 19 and the driven wheel 18, respectively. A turntable is rotatably mounted inside the positioning seat 2. 8. A first gear 9 is fitted onto the turntable 8. A first rack 10 is slidably installed inside the positioning seat 2, and the first rack 10 meshes with the first gear 9. A ring gear 11 is fixedly installed on the turntable 8. A slider 12 is fixedly installed on each of the three sets of locking rods 4. Three sets of sliding grooves 7 are provided on the cover plate 6, corresponding to the locking rods 4. The slider 12 is slidably connected to the cover plate 6 through the sliding grooves 7, and the slider 12 is meshed with the turntable 8 through the ring gear 11. When the cylinder in the positioning seat 2 drives the first rack 10 to slide, it cooperates with the first gear 9 to make the turntable 8 drive the ring gear 11 to rotate. Under the limiting action of the sliding grooves 7, the distance between the three sets of sliders 12 and the locking rods 4 is adjusted, thereby realizing the quick installation or removal of the take-up roller 3. The solenoid valves corresponding to the cylinders are all open. The rotating joint connects to the power supply to avoid interference from connecting wires or other components affecting the rotation of the positioning seat 2. As the positioning seat 2 rotates on the mounting frame 1, it drives the take-up roller 3 to rotate, completing the winding of the shrink film. The motor in the mounting seat 13 drives the drive wheel 19 to rotate, which, in conjunction with the driven wheel 18 and belt 20, causes the roller 16 to rotate in the opposite direction to the shrink film winding direction. For example, if the take-up roller 3 rotates counterclockwise, the film winds to the right, causing the roller 16 to rotate counterclockwise to the left. During film winding, under the action of the first slide rod 14 and the first spring 15, the mounting seat 13 drives the roller 16 to adhere to the film during winding. The film gradually winds up and thickens on the take-up roller, further pressing down on the roller 16, causing the mounting seat 13 to compress the first spring 15 downwards.Meanwhile, an external temperature sensor monitors the temperature of the shrink film in real time. Low-temperature gas is introduced into the roller 16 via a connecting pipe 21 connected to an air pump. This low-temperature gas acts on the film surface through the breathable mesh 17, cooling the film during winding based on its temperature. This effectively prevents the film from being stretched and deformed during winding due to high winding tension or high film temperature, while also preventing the film from becoming loose due to insufficient tension.

[0024] like Figure 5 , Figure 6 and Figure 7 As shown, a second gear 23 is sleeved on the scraper 22, and a second rack 24 is slidably installed in the mounting base 13. The second rack 24 meshes with the second gear 23. A lead screw 26 is provided in the mounting base 13. The two ends of the lead screw 26 pass through the mounting base 13 and are rotatably connected to the mounting base 13 through bearings. The lead screw 26 passes through the movable base 25 and is threadedly connected to the movable base 25. The cleaning rubber plate 27 is slidably connected to the movable base 25 through the abutment 28. A second slide rod 29 is fixedly installed in the movable base 25. Two sets of symmetrically distributed second springs 30 are sleeved on the second slide rod 29. The abutment 28 is slidably sleeved with the second slide rod 29. The two ends of the two sets of second springs 30 are fixedly connected to the abutment 28 and the movable base 25, respectively. A cam 31 is rotatably installed in the movable base 25. The cam 31 is set to fit against the abutment 28. The roller 1 During rotation, the scraper 22 is scraped against the roller 16, and the impurities adhering to the roller 16 are transferred to the scraper 22, thus cleaning the roller 16 and preventing the impurities adhering to the roller 16 from causing problems such as scratching the film. Then, the cylinder in the mounting base 13 is activated to drive the sliding of the second rack 24, which, together with the second gear 23, realizes the rotation of the scraper 22, so that the side of the scraper 22 with the impurities adhering to it is in contact with the moving base 25 and the cleaning rubber plate 27. When the motor in the mounting base 13 drives the lead screw 26 to rotate, the moving base 25 drives the cleaning rubber plate 27 to slide in the mounting base 13, and the motor in the moving base 25 drives the cam 31 to rotate, which, together with the second slide rod 29 and the second spring 30, makes the abutment 28 drive the cleaning rubber plate 27 to vibrate on the moving base 25, thus completing the cleaning of impurities on the scraper 22.

[0025] This utility model provides a shrinkable film winding device, the specific working principle of which is as follows: When the cylinder in the positioning seat 2 drives the first rack 10 to slide, it cooperates with the first gear 9 to make the turntable 8 drive the ring gear 11 to rotate. Under the limiting action of the slide groove 7, the distance between the three sets of sliders 12 and the locking rod 4 is adjusted, thereby realizing the quick installation or removal of the take-up roller 3. The solenoid valves corresponding to the cylinder are all connected to the power supply through rotary joints to avoid the influence of connecting wires on the rotation of the positioning seat 2. During the rotation of the positioning seat 2 on the mounting frame 1, it drives the take-up roller 3 to rotate, completing the winding of the shrinkable film. The winding process begins when the motor in the mounting base 13 drives the drive wheel 19 to rotate. This, in conjunction with the driven wheel 18 and belt 20, causes the roller 16 to rotate in the opposite direction to the shrink film winding direction. For example, if the winding roller 3 rotates counterclockwise, the film winds to the right, causing the roller 16 to rotate counterclockwise to the left. During the film winding process, under the action of the first slide rod 14 and the first spring 15, the mounting base 13 drives the roller 16 to adhere to the film during the winding process. The film gradually winds up and thickens on the winding roller, which in turn presses the roller 16 downwards, causing the mounting base 13 to compress the first spring 15 downwards. Simultaneously, an external temperature sensor monitors the shrink film in real time. The temperature of the film is controlled by introducing low-temperature gas into the roller 16 via a connection pipe 21 to an air pump. This low-temperature gas acts on the film surface through the breathable mesh 17, cooling the film during winding according to its temperature. This effectively prevents the film from being stretched and deformed during winding due to high winding tension or high film temperature, while also preventing loosening caused by insufficient tension. As the roller 16 rotates, it scrapes against the scraper 22, transferring impurities adhering to the roller 16 to the scraper 22, thus cleaning the roller 16 and preventing impurities from affecting the film. This causes problems such as scraping. Then, the cylinder in the mounting base 13 drives the second rack 24 to slide, which, together with the second gear 23, makes the scraper 22 rotate. This makes the side of the scraper 22 with the adhering impurities fit into the moving seat 25 and the cleaning rubber plate 27. When the motor in the mounting base 13 drives the lead screw 26 to rotate, the moving seat 25 drives the cleaning rubber plate 27 to slide in the mounting base 13. The motor in the moving seat 25 drives the cam 31 to rotate, which, together with the second slide rod 29 and the second spring 30, makes the abutment 28 drive the cleaning rubber plate 27 to vibrate on the moving seat 25, thus completing the cleaning of impurities on the scraper 22.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shrinkable film winding device, comprising a mounting frame (1) and a take-up roller (3), characterized in that: A positioning seat (2) is rotatably mounted on the mounting frame (1), and a cover plate (6) is fixedly mounted on the positioning seat (2). Three sets of annularly distributed locking rods (4) are provided between the positioning seat (2) and the cover plate (6). Three sets of annularly distributed locking grooves (5) are provided on the take-up roller (3). The locking rods (4) are movably engaged with the take-up roller (3) through the locking grooves (5). A mounting base (13) is slidably mounted on the mounting frame (1), and a roller (16) is rotatably mounted on the mounting base (13). Multiple sets of annularly distributed breathable meshes (17) are embedded in the roller (16). The roller (16) is correspondingly arranged with the take-up roller (3). The mounting frame (1) is fixedly mounted with... The mounting base (13) is slidably sleeved with the first slide rod (14), and two sets of symmetrically distributed first springs (15) are sleeved on the first slide rod (14). The two ends of the two sets of first springs (15) are fixedly connected to the mounting base (13) and the mounting frame (1), respectively. A scraper (22) is rotatably mounted on the mounting base (13). The scraper (22) is in contact with the surface of the roller (16). A movable seat (25) corresponding to the scraper (22) is slidably mounted on the mounting base (13). A cleaning rubber plate (27) is provided on the movable seat (25). The cleaning rubber plate (27) is in contact with the scraper (22).

2. The shrinkable film winding device according to claim 1, characterized in that: Two sets of symmetrically distributed connecting pipes (21) are fixedly installed on the mounting base (13). The two ends of the roller (16) are rotatably connected to the two sets of connecting pipes (21) respectively. A driven wheel (18) is sleeved on the roller (16). A driving wheel (19) is rotatably installed on the mounting base (13). A belt (20) is provided on the mounting base (13). The belt (20) is connected to the driving wheel (19) and the driven wheel (18) respectively.

3. The shrinkable film winding device according to claim 1, characterized in that: A turntable (8) is rotatably installed inside the positioning seat (2). A first gear (9) is sleeved on the turntable (8). A first rack (10) is slidably installed inside the positioning seat (2). The first rack (10) meshes with the first gear (9). A ring tooth (11) is fixedly installed on the turntable (8). A slider (12) is fixedly installed on each of the three sets of clamps (4). Three sets of sliding grooves (7) corresponding to the clamps (4) are opened on the cover plate (6). The slider (12) is slidably connected to the cover plate (6) through the sliding grooves (7). The slider (12) meshes with the turntable (8) through the ring tooth (11).

4. The shrinkable film winding device according to claim 1, characterized in that: A second gear (23) is sleeved on the scraper (22), and a second rack (24) is slidably installed in the mounting base (13). The second rack (24) meshes with the second gear (23).

5. A shrinkable film winding device according to claim 1, characterized in that: The mounting base (13) is provided with a lead screw (26). The two ends of the lead screw (26) pass through the mounting base (13) and are rotatably connected to the mounting base (13) through bearings. The lead screw (26) passes through the movable seat (25) and is threadedly connected to the movable seat (25).

6. The shrinkable film winding device according to claim 1, characterized in that: The cleaning rubber plate (27) is slidably connected to the movable seat (25) via the abutment (28). A second slide rod (29) is fixedly installed inside the movable seat (25). Two sets of symmetrically distributed second springs (30) are sleeved on the second slide rod (29). The abutment (28) is slidably sleeved with the second slide rod (29). The two ends of the two sets of second springs (30) are fixedly connected to the abutment (28) and the movable seat (25) respectively. A cam (31) is rotatably installed inside the movable seat (25). The cam (31) is fitted against the abutment (28).

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