A winding device for BOPP film production

Abstract

This utility model relates to the field of BOPP film production technology, specifically a winding device for BOPP film production, including a winding table, an adjustment mechanism, and a winding change mechanism. The adjustment mechanism is installed on the top left side of the winding table, and the winding change mechanism is installed on the top right side of the winding table. The adjustment mechanism includes a lifting component and a limiting roller. The lifting component drives the limiting roller to rise and fall, thereby adjusting the film winding tension. The winding change mechanism includes a drive frame and a steering component. A rotatable steering component is installed at the center of the drive frame. The steering component drives two sets of rolls installed at the front end to rotate. The tension generated during film winding can be adjusted by controlling the height of the limiting roller through the lifting component. The film winding change is completed by rotating the rolls through the steering component in the winding change mechanism. Furthermore, with the cooperation of the bottom side cutting component, roll replacement can be performed without stopping the machine, further improving efficiency and reducing film loss.

Description

Technical Field

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

[0002] As downstream industries continue to raise their requirements for the quality of packaging materials, the production scale of BOPP film continues to expand, which puts forward higher standards for the precision, efficiency and stability of each process in the production process. Among them, the winding process is a key link in the later stage of BOPP film production, which directly affects the roll shape, surface quality and subsequent processing applicability of the finished film. Its technical level has an important impact on the capacity and product qualification rate of the entire production line.

[0003] For example, patent document CN220549783U discloses a high-stability BOPP film production winding device, including a base. The top of the base is provided with a right upright and a left upright. The right upright is located to the right of the left upright. An adjusting roller and a fixed roller are provided between the right upright and the left upright. The fixed roller is located on the front and rear sides of the adjusting roller. The fixed roller can be removed by pulling out the disassembly block in the groove. The adjusting roller can be separated between the mounting slots of the moving block by the mounting block, which facilitates the disassembly of the adjusting roller and the unwinding of the wound BOPP film, and facilitates the quick resolution of the winding problem. The addition of baffle two and baffle one can prevent the BOPP film from skewing and improve the winding stability.

[0004] However, existing devices mostly use single-point tension detection and hysteresis adjustment. When the film transmission speed fluctuates or the winding diameter gradually increases, the tension is prone to sudden rise or fall, causing the film to wrinkle, stretch, deform, or even break. In addition, the winding device is mostly a single-station or dual-station alternating structure. After a roll of film is wound up, the machine needs to be stopped and the finished roll needs to be manually disassembled, a new winding mandrel needs to be installed, and then the equipment needs to be restarted for tension calibration and film docking. During this period, the production line needs to suspend film production, which not only reduces the overall production efficiency, but also generates about 5-10 meters of waste film in the transition section, increasing the cost of raw material loss. Therefore, it is urgent to design a winding device for BOPP film production to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a winding device for BOPP film production, which solves the problem mentioned in the background art that existing devices mostly adopt single-point tension detection and hysteresis adjustment methods. When the film transmission speed fluctuates or the winding diameter gradually increases, the tension is prone to sudden rise or fall, resulting in wrinkles, stretching deformation or even breakage of the film. In addition, the winding devices are mostly single-station or dual-station alternating structures. After a roll of film is wound, the machine needs to be stopped and the finished roll needs to be manually disassembled and a new winding mandrel needs to be installed before the equipment is restarted for tension calibration and film docking. During this period, the production line needs to suspend film production, which not only reduces the overall production efficiency, but also generates about 5-10 meters of waste film in the transition section, increasing the cost of raw material loss.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a winding device for BOPP film production, comprising a winding table, an adjustment mechanism, and a winding changing mechanism. The adjustment mechanism is installed on the top left side of the winding table, and the winding changing mechanism is installed on the top right side of the winding table. The adjustment mechanism includes a lifting component and a limiting roller. The lifting component drives the limiting roller to rise and fall to adjust the film winding tension. The winding changing mechanism includes a drive frame and a steering component. A rotatable steering component is installed at the center of the drive frame. The steering component drives two sets of rolls installed at the front end to rotate. After the rolls rotate, a cutting component cuts them.

[0007] Preferably, the lifting component includes a fixed frame and a fixed plate. A trapezoidal slide rail is provided inward on the front side of the fixed frame. A fixed plate is installed at the top of the fixed frame. A first servo motor is installed at the front end of the fixed plate. The bottom end of the first servo motor drives a threaded rod to rotate within the trapezoidal slide rail. A threaded cylinder is sleeved at the center of the threaded rod.

[0008] Preferably, the surface of the limiting roller is coated with an electrostatic adsorption material, the rear end of the limiting roller is fixed to the front end of the slider, the slider moves up and down in the trapezoidal slide rail, and a wire spool is installed at the center of the slider.

[0009] Preferably, the drive frame includes a limiting plate and a fixed bearing. The fixed bearing is installed at the center of the limiting plate, and the main drive shaft is installed at the center of the fixed bearing. The rear end of the main drive shaft is driven by a second servo motor.

[0010] Preferably, the steering component includes a U-shaped frame and a rotating plate. The rear end of the U-shaped frame is fixed to the front end of the main drive shaft, and the rotating plate is fixed to the front end of the U-shaped frame. Limit bearings are fixed on both sides of the center of the rotating plate. A transmission shaft is installed at the center of the two sets of limit bearings. The rear ends of the two sets of transmission shafts are driven by a third servo motor, and the front ends of the two sets of transmission shafts have inwardly formed circular grooves.

[0011] Preferably, the roll includes a rotating shaft and a paper tube, the rear end of the rotating shaft is inserted into the front end of the drive shaft, the paper tube is sleeved on the outside of the rotating shaft, and adhesive strips are bonded to both the upper and lower ends of the paper tube.

[0012] Preferably, the cutting component includes a hydraulic cylinder and a C-shaped block. The top of the hydraulic cylinder is fixedly provided with the C-shaped block. Multiple sets of springs are fixedly provided on the bottom side of the inside of the C-shaped block. The tops of the multiple sets of springs are connected to the bottom of the connecting block. A semi-circular support plate is fixedly provided on the top of the connecting block. The inner wall of the semi-circular support plate is attached to the bottom side of the paper tube. A strip blade is obliquely installed on the right side of the semi-circular support plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This type of BOPP film production winding device can control the tension of the film during winding by adjusting the height of the limit roller through the lifting component. The film winding can be changed by rotating the roll through the steering component in the roll changing mechanism. Then, with the cooperation of the bottom side cutting component, the roll can be changed without stopping the machine, which further improves efficiency and reduces film loss.

[0015] This is a winding device for BOPP film production. The outer wall of the limiting roller is coated with a coating that can absorb static electricity, which can effectively prevent wrinkles and other problems after winding, thus improving the winding quality. The adhesive strips bonded to the bottom of the paper tube facilitate quick bonding of the film, thereby improving the winding efficiency. The structure is simple, convenient and fast. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the present utility model;

[0017] Figure 2 This is a side view of the present invention;

[0018] Figure 3 This is a top view of the adjustment mechanism of this utility model;

[0019] Figure 4 This is a side sectional view of the roll changing mechanism of this utility model;

[0020] Figure 5 This is a frontal cross-sectional view of the cut and rolled component of this utility model.

[0021] In the diagram: 1. Rewinding table; 2. Adjustment mechanism; 21. Lifting component; 211. Fixed frame; 212. Trapezoidal slide rail; 213. Fixed plate; 214. First servo motor; 215. Threaded rod; 216. Tube; 22. Limiting roller; 221. Slider; 3. Roll changing mechanism; 31. Drive frame; 311. Limiting plate; 312. Fixed bearing; 313. Main drive shaft; 314. Second servo motor; 32. Steering component; 321. U-shaped frame; 322. Rotating plate; 323. Limiting bearing; 324. Transmission shaft; 325. Third servo motor; 326. Circular groove; 4. Tube; 41. Rotating shaft; 42. Paper tube; 43. Adhesive strip; 5. Cutting component; 51. Hydraulic cylinder; 52. C-shaped block; 53. Spring; 54. Connecting block; 55. Semi-arc support plate; 56. Strip blade. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 One embodiment provided by this utility model:

[0024] A winding device for BOPP film production includes a winding table 1, an adjustment mechanism 2, and a winding change mechanism 3. The adjustment mechanism 2 is installed on the top left side of the winding table 1, and the winding change mechanism 3 is installed on the top right side of the winding table 1. The adjustment mechanism 2 includes a lifting component 21 and a limiting roller 22. The lifting component 21 drives the limiting roller 22 to rise and fall, thereby adjusting the film winding tension. The winding change mechanism 3 includes a drive frame 31 and a steering component 32. The rotatable steering component 32 is installed at the center of the drive frame 31. The steering component 32 drives two sets of rolls 4 installed at the front end to flip. After the rolls 4 flip, the cutting component 5 cuts them.

[0025] As a further feature of this invention, the lifting component 21 includes a fixed frame 211 and a fixed plate 213. A trapezoidal slide rail 212 is provided inward on the front side of the fixed frame 211. The fixed plate 213 is installed at the top of the fixed frame 211. A first servo motor 214 is installed at the front end of the fixed plate 213. The bottom end of the first servo motor 214 drives the threaded rod 215 to rotate within the trapezoidal slide rail 212. A threaded cylinder 216 is sleeved at the center of the threaded rod 215, which can drive the limiting roller to lift and lower for easy tension adjustment.

[0026] Furthermore, the surface of the limiting roller 22 is coated with an anti-static material, and the rear end of the limiting roller 22 is fixed to the front end of the slider 221. The slider 221 moves up and down within the trapezoidal slide rail 212, and the yarn spool 216 is installed at the center of the slider 221. Through the above design, static electricity can be absorbed to improve the winding quality.

[0027] As a further improvement of this utility model, the drive frame 31 includes a limiting plate 311 and a fixed bearing 312. The fixed bearing 312 is installed at the center of the limiting plate 311, and the main drive shaft 313 is installed at the center of the fixed bearing 312. The rear end of the main drive shaft 313 is driven by a second servo motor 314. The steering component 32 includes a U-shaped frame 321 and a rotating plate 322. The rear end of the U-shaped frame 321 is fixed to the front end of the main drive shaft 313, and the rotating plate 322 is fixed to the front end of the U-shaped frame 321. Limiting bearings 323 are fixed on both sides of the center of the rotating plate 322. The transmission shaft 324 is installed at the center of the two sets of limiting bearings 323. The rear ends of the two sets of transmission shafts 324 are driven by a third servo motor 325. The front ends of the two sets of transmission shafts 324 are provided with inward circular grooves 326. This device facilitates quick replacement of the drum and improves winding efficiency.

[0028] Furthermore, the roll 4 includes a rotating shaft 41 and a paper tube 42. The rear end of the rotating shaft 41 is inserted into the front end of the drive shaft 324. The paper tube 42 is sleeved on the outside of the rotating shaft 41. Adhesive strips 43 are bonded to both the upper and lower ends of the paper tube 42 to facilitate the bonding of film and improve the stability of winding.

[0029] Furthermore, the cutting component 5 includes a hydraulic cylinder 51 and a C-shaped block 52. The top of the hydraulic cylinder 51 is fixed with the C-shaped block 52. Multiple sets of springs 53 are fixed inside the bottom side of the C-shaped block 52. The tops of the multiple sets of springs 53 are connected to the bottom of the connecting block 54. A semi-circular support plate 55 is fixed at the top of the connecting block 54. The inner wall of the semi-circular support plate 55 is attached to the bottom side of the paper tube 42. A strip blade 56 is installed obliquely on the right side of the semi-circular support plate 55 to facilitate film cutting and facilitate the operation of the roll changing mechanism.

[0030] Working principle: During use, the operator first pulls the produced film conveyor end to the bottom of the paper tube 42 installed on the left side of the right-end steering component 32. After the film is bonded by the adhesive strip 43 on the bottom side of the paper tube 42, the first servo motor 214 is powered on to drive the threaded rod 215 to rotate. The rotation of the threaded rod 215 drives the yarn tube 216 and the slider 221 to rise. The rise of the slider 221 drives the limit roller 22 to rise, thereby increasing the film tension. Then, the third servo motor 325 on the left side is started to drive the transmission shaft 324 to rotate. The rotation of the transmission shaft 324 drives the front end... The paper tube 42 can be wound up by rotating the shaft 41 and the paper tube 42. When the paper tube 42 is wound up to a suitable thickness, the second servo motor 314 can be started to drive the main drive shaft 313 to rotate 180 degrees counterclockwise. During the rotation, the right-side roll 4 can contact the conveyed film for bonding. At the same time as the roll is flipped, the hydraulic cylinder 51 is started to push the connecting block 54 and the semi-arc support plate 55 to support the bottom side of the paper tube 42. At the same time, the strip blade 56 on the side of the semi-arc support plate 55 cuts the film. Then the right-side rolled roll 4 can be taken out after the third servo motor 325 is stopped. The above is the entire working principle of this utility model.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A winding device for BOPP film production, comprising a winding table (1), an adjustment mechanism (2), and a winding changing mechanism (3), characterized in that: An adjustment mechanism (2) is installed on the top left side of the winding table (1), and a roll changing mechanism (3) is installed on the top right side of the winding table (1). The adjustment mechanism (2) includes a lifting component (21) and a limiting roller (22). The lifting component (21) drives the limiting roller (22) to rise and fall, thereby adjusting the film winding tension. The roll changing mechanism (3) includes a drive frame (31) and a steering component (32). A rotatable steering component (32) is installed at the center of the drive frame (31). The steering component (32) drives the two sets of rolls (4) installed at the front end to flip. After the rolls (4) flip, the roll cutting component (5) cuts them.

2. The winding device for BOPP film production according to claim 1, characterized in that: The lifting component (21) includes a fixed frame (211) and a fixed plate (213). A trapezoidal slide rail (212) is opened inward on the front side of the fixed frame (211). The fixed plate (213) is installed at the top of the fixed frame (211). A first servo motor (214) is installed at the front end of the fixed plate (213). The bottom end of the first servo motor (214) drives a threaded rod (215) to rotate in the trapezoidal slide rail (212). A threaded cylinder (216) is sleeved at the center of the threaded rod (215).

3. The winding device for BOPP film production according to claim 1, characterized in that: The surface of the limiting roller (22) is coated with an electrostatic adsorption material. The rear end of the limiting roller (22) is fixed to the front end of the slider (221). The slider (221) moves up and down in the trapezoidal slide rail (212). A wire spool (216) is installed at the center of the slider (221).

4. A winding device for BOPP film production according to claim 1, characterized in that: The drive frame (31) includes a limiting plate (311) and a fixed bearing (312). The fixed bearing (312) is installed at the center of the limiting plate (311), and a main drive shaft (313) is installed at the center of the fixed bearing (312). The rear end of the main drive shaft (313) is driven by a second servo motor (314).

5. A winding device for BOPP film production according to claim 1, characterized in that: The steering component (32) includes a U-shaped frame (321) and a rotating plate (322). The rear end of the U-shaped frame (321) is fixed to the front end of the main drive shaft (313). The rotating plate (322) is fixed to the front end of the U-shaped frame (321). Limit bearings (323) are fixed on both sides of the center of the rotating plate (322). A transmission shaft (324) is installed at the center of the two sets of limit bearings (323). The rear ends of the two sets of transmission shafts (324) are driven by a third servo motor (325). The front ends of the two sets of transmission shafts (324) are opened with inward circular grooves (326).

6. A winding device for BOPP film production according to claim 1, characterized in that: The roll (4) includes a rotating shaft (41) and a paper tube (42). The rear end of the rotating shaft (41) is inserted into the front end of the drive shaft (324). The paper tube (42) is sleeved on the outside of the rotating shaft (41). Adhesive strips (43) are bonded to both the upper and lower ends of the paper tube (42).

7. A winding device for BOPP film production according to claim 1, characterized in that: The cutting and rolling component (5) includes a hydraulic cylinder (51) and a C-shaped block (52). The top of the hydraulic cylinder (51) is fixed with the C-shaped block (52). Multiple sets of springs (53) are fixed on the bottom side of the inside of the C-shaped block (52). The top of the multiple sets of springs (53) are connected to the bottom of the connecting block (54). A semi-arc support plate (55) is fixed on the top of the connecting block (54). The inner wall of the semi-arc support plate (55) is attached to the bottom side of the paper tube (42). A strip blade (56) is installed obliquely on the right side of the semi-arc support plate (55).

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