A stretch film winding correction device

Abstract

The application discloses a stretching film winding deviation rectifying device and belongs to the technical field of stretching film production. The device comprises an assembling plate, side plates fixedly arranged at the top of the assembling plate, and guide rollers rotatably arranged between the side plates. A deviation rectifying roller is arranged at the top of the assembling plate and is driven by external force to adjust the height at both ends of the deviation rectifying roller, so as to rectify the stretching film. The device is characterized in that the worm and the worm wheel are connected through meshing, the worm wheel is driven to rotate, the U-shaped frame is driven to rotate, the deviation rectifying roller is driven to rotate along with the rotation of the U-shaped frame, the deviation rectifying roller is horizontally rotated, the deviated stretching film is guided, the stretching film returns to the horizontal winding position, the problem that the deviation of the stretching film in different directions cannot be rectified by only smoothing the surface of the stretching film is solved, and the effect that the stretching film can be rectified in different angles is realized.

Description

Technical Field

[0001] This application relates to the field of stretch film production technology, and more specifically, to a web-correcting device for stretch film winding. Background Technology

[0002] During the stretch film wrapping process, due to factors such as film roll installation deviation, conveying speed fluctuation, and uneven film tension, the stretch film is prone to lateral or longitudinal offset, resulting in uneven wrapping, loose packaging, or even material waste.

[0003] In related technologies, the unevenness of the film roll surface can easily result from the film shifting during the winding process. To address this, for example, patent CN222373962U provides a correction device for stretch film winding. This device uses a drive motor, gears, and two racks to move the connecting block closer together, which in turn moves two sets of second rotating rollers to adjust the horizontal position of the stretch film. This prevents the film roll surface from becoming uneven due to the film shifting, ensuring that the stretch film adheres tightly and evenly to the surface of the packaged object during the packaging process, thereby improving the sealing and protective performance of the packaging. The tension of the stretch film can be adjusted by the interaction of an electric push rod, slide rail, sliding block, and adjusting rod to control the tension of the stretch film during the winding process.

[0004] Although the existing technical solution mentioned above moves and adjusts the position of the stretch film in the horizontal direction by using two sets of second rotating rollers to avoid unevenness of the film roll surface caused by the stretch film shifting, the stretch film will shift in different directions during the winding process. At this time, it is difficult to correct the shift of the stretch film in different directions by simply smoothing and tidying the surface of the stretch film.

[0005] In view of this, we propose a correction device for stretch film winding. Utility Model Content

[0006] The purpose of this application is to provide a correction device for stretch film winding, which can effectively solve the problem in the prior art that simply smoothing and tidying the surface of the stretch film cannot correct the deviation of the stretch film in different directions, and achieve the effect of correcting the stretch film at different angles.

[0007] This application provides a web-correcting device for stretch film winding, comprising:

[0008] An assembly plate, wherein side plates are fixedly provided on both sides of the top of the assembly plate, and guide rollers are rotatably provided between the two side plates;

[0009] The alignment roller is located on the top of the assembly plate. The two ends of the alignment roller are driven by external force to adjust the height, which is used to correct the deviation of the stretch film.

[0010] The U-shaped frame is rotatably mounted on the top of the assembly plate and is driven to rotate by external force to adjust the horizontal angle of the alignment roller.

[0011] The two ends of the U-shaped frame are correspondingly arranged with the two ends of the correction roller. Both ends of the U-shaped frame are fixedly equipped with electric push rods for driving the correction roller to rise and fall. The driving end of the electric push rod is movably connected to the two ends of the correction roller.

[0012] As an optional solution to the technical solution of this application, a worm gear is fixedly installed at the middle position of the bottom of the U-shaped frame, and a worm is engaged on the outer side of the worm gear. One end of the worm is fixedly connected to the drive end of the motor. The motor is fixedly installed inside the assembly frame, and the assembly frame is fixedly installed on the top surface of the assembly plate. The end of the worm away from the motor is rotatably installed on the side wall of the assembly frame.

[0013] As an optional solution to the technical solution of this application, the correction roller is rotatably disposed on the outside of the long rod, a telescopic protrusion is slidably disposed at one end of the long rod, and an adjustment block is fixedly disposed at the ends of the long rod and the telescopic protrusion that are far apart from each other.

[0014] Each adjusting block has a fixed rotating block at its bottom end. The inner ring of the rotating block is rotatably mounted with a fixed pin via a bearing. The fixed pin is fixedly mounted inside the limiting rotating block. The limiting rotating block is fixedly mounted at the drive end of the electric push rod. The electric push rod is fixedly mounted inside one end of the U-shaped frame.

[0015] As an optional solution to the technical solution of this application, a telescopic groove is provided on the inner side of the long rod corresponding to the telescopic protrusion, and retaining rings are fixedly provided on both ends of the telescopic groove corresponding to the two ends of the correction roller.

[0016] As an optional solution to the technical solution of this application, the side plate is provided with an arc-shaped groove on the side near the correction roller, and the side plate near the U-shaped frame is provided with a connecting groove connected to the arc-shaped groove. The two ends of the U-shaped frame are located inside the side plate and are slidably disposed inside the arc-shaped groove.

[0017] As an optional solution to the technical solution of this application, two sets of support legs are fixedly installed at the bottom of the assembly plate, and two sets of guide rollers are symmetrically arranged between the side plates on both sides, with the two sets of guide rollers located on the front and rear sides of the correction roller respectively.

[0018] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0019] (1) This application uses a meshing connection between a worm and a worm wheel to drive the worm wheel to rotate, thereby driving the U-shaped frame to rotate. As the U-shaped frame rotates, it drives the correction roller to rotate. When the correction roller rotates horizontally, it guides the deviated stretch film and returns the stretch film to the horizontal winding position. Therefore, it effectively solves the problem that smoothing and finishing the surface of the stretch film is not enough to correct the deviation of the stretch film in different directions, and thus achieves the effect of correcting the stretch film at different angles.

[0020] (2) In this application, when the adjustment blocks on both sides are rotated during the rotation of the correction roller, the telescopic protrusion slides along the telescopic groove into the long rod and automatically adapts to the shortening of the distance between the long rod and the telescopic protrusion when the height difference occurs. At this time, the correction roller tilts due to the height difference. At the same time, the friction force of the stretch film in the offset direction increases and the friction force in the other direction decreases. The correction effect on the stretch film is further improved by changing the friction force. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a web-correcting device for stretch film winding disclosed in a preferred embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the arc-shaped groove in the stretch film winding correction device disclosed in a preferred embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the worm gear in the web-correcting device for stretch film winding disclosed in a preferred embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the bearing structure in the stretch film winding correction device disclosed in a preferred embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the expansion groove in a web-correcting device for stretch film winding disclosed in a preferred embodiment of this application;

[0026] The following are the labels in the diagram: 1. Assembly plate; 11. Side plate; 12. Guide roller; 13. Arc-shaped chute; 14. Connecting groove; 15. Support leg frame; 2. Correcting roller; 21. Long rod; 22. Telescopic groove; 23. Telescopic protrusion; 24. Adjusting block; 25. Rotating block; 26. Bearing; 27. Fixed pin; 28. Restricting rotating block; 29. ​​Electric push rod; 3. U-shaped frame; 31. Worm gear; 32. Assembly frame; 33. Motor; 34. Worm. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] Reference Figures 1-5 This application discloses a web-correcting device for stretch film winding, including an assembly plate 1, a web-correcting roller 2, a U-shaped frame 3, and an electric push rod 29. Side plates 11 are fixedly mounted on both sides of the top of the assembly plate 1, and a guide roller 12 is rotatably mounted between the side plates 11. The web-correcting roller 2 is mounted on the top of the assembly plate 1, and its two ends are driven by external force to adjust its height for correcting the web of the stretch film. The U-shaped frame 3 is rotatably mounted on the top of the assembly plate 1 and is driven by external force to rotate, adjusting the horizontal angle of the web-correcting roller 2. The two ends of the U-shaped frame 3 correspond to the two ends of the web-correcting roller 2. An electric push rod 29 for driving the web-correcting roller 2 to rise and fall is fixedly mounted on both ends of the U-shaped frame 3. The driving end of the electric push rod 29 is movably connected to both ends of the web-correcting roller 2. The bottom center of the U-shaped frame 3... A worm gear 31 is fixedly installed at the position, and a worm 34 is meshed on the outer side of the worm gear 31. One end of the worm 34 is fixedly connected to the drive end of the motor 33. The motor 33 is fixedly installed inside the assembly frame 32, and the assembly frame 32 is fixedly installed on the top surface of the assembly plate 1. The end of the worm 34 away from the motor 33 is rotatably installed on the side wall of the assembly frame 32. An arc-shaped groove 13 is opened on the side plate 11 near the correction roller 2. A connecting groove 14 is opened on the side plate 11 near the U-shaped frame 3. The two ends of the U-shaped frame 3 are located inside the side plate 11 and are slidably installed inside the arc-shaped groove 13. Two sets of support legs 15 are fixedly installed at the bottom of the assembly plate 1. Two sets of guide rollers 12 are symmetrically arranged between the two side plates 11. The two sets of guide rollers 12 are located on the front and rear sides of the correction roller 2, respectively.

[0029] Before the stretch film passes through the device, the support frame 15 facilitates the adjustment of the device's position to adapt to different winding equipment. After placement, the stretch film is placed on the correction roller 2 between one side guide roller 12 and then passed between the other side guide roller 12 to be fixedly connected to the external winding equipment. The winding equipment is then started for winding. During the winding process, when the photoelectric sensor detects a winding deviation of the stretch film, it sends a signal to the control system. Upon receiving the signal, the control system issues a command to start the motor 33 to drive the worm gear 34 to rotate. The worm gear 34 is driven to rotate through the meshing connection between the worm 34 and the worm wheel 31, thereby driving the U-shaped frame 3 to rotate. At this time, the two sides of the U-shaped frame 3 rotate along the arc-shaped sliding groove 13, while the connecting groove 14 provides rotation space for the bottom of the U-shaped frame 3. As the U-shaped frame 3 rotates, it can drive the adjusting block 24 to rotate in the same way, thereby driving the correction roller 2 to rotate through the long rod 21 and the telescopic protrusion 23. When the correction roller 2 rotates horizontally, it guides the deviated stretch film and makes the stretch film return to the horizontal winding position.

[0030] Reference Figure 4 and Figure 5The correction roller 2 is rotatably mounted on the outside of the long rod 21. A telescopic protrusion 23 is slidably mounted on one end of the long rod 21. An adjusting block 24 is fixedly mounted on the ends of the long rod 21 and the telescopic protrusion 23 that are far apart from each other. A rotating block 25 is fixedly mounted on the bottom end of the adjusting block 24. A fixed pin 27 is rotatably mounted on the inner ring of the rotating block 25 through the bearing 26. The fixed pin 27 is fixedly mounted on the inner side of the limiting rotating block 28. The limiting rotating block 28 is fixedly mounted on the drive end of the electric push rod 29. The electric push rod 29 is fixedly mounted on the inner side of one end of the U-shaped frame 3. A telescopic groove 22 is opened on the inner side of the long rod 21 corresponding to the telescopic protrusion 23. A retaining ring is fixedly mounted on the outer side of the telescopic groove 22 corresponding to both ends of the correction roller 2.

[0031] During the rotation of the correction roller 2, the control system simultaneously sends a command to the electric push rod 29 on the side of the stretch film that is offset. At this time, the electric push rod 29 starts slowly, driving the limiting block 28 to slide upward. At this time, a height difference appears between the two limiting blocks 28. The adjusting block 24 on the raised side rotates at an angle towards the correction roller 2. During rotation, the bearing 26 provides high-precision control to maintain the stability of the adjusting block 24 during rotation. When a height difference appears between the two adjusting blocks 24, the telescopic protrusion 23 slides along the telescopic groove 22 into the long rod 21, automatically adapting to the shortening of the distance between the long rod 21 and the telescopic protrusion 23 when the height difference occurs. At this time, the correction roller 2 tilts due to the height difference. At the same time, the friction force on the stretch film in the offset direction increases, while the friction force in the other direction decreases. The change in friction force further improves the correction effect on the stretch film.

[0032] In summary, the stretch film winding correction device disclosed in this application, when in use, allows for easy adjustment of the device's position via the support frame 15 before the stretch film passes through it, facilitating compatibility with different winding equipment. After placement, the stretch film is placed on the correction roller 2 between one side guide roller 12 and then through the other side guide roller 12 to be fixedly connected to the external winding equipment. The winding equipment is then started for winding. During the winding process, when the photoelectric sensor detects a winding deviation of the stretch film (this detection process and principle are existing technology and will not be elaborated here), it sends a signal to the control system. Upon receiving the signal, the control system issues a command to start the motor 33 to drive the worm gear 34 to rotate. Through the meshing connection between the worm gear 34 and the worm wheel 31, the worm wheel 31 is driven to rotate, thereby driving the U-shaped frame 3 to rotate. At this time, the two sides of the U-shaped frame 3 rotate along the arc-shaped sliding groove 13, while the connecting groove 14 provides rotation space for the bottom of the U-shaped frame 3. As the U-shaped frame 3 rotates, the adjusting block 24 rotates in the same manner, thereby achieving the desired winding position. Rod 21 and telescopic cam 23 drive the correction roller 2 to rotate. When the correction roller 2 rotates horizontally, it guides the offset stretch film, causing it to return to the horizontal winding position. During the rotation of the correction roller 2, the control system simultaneously sends a command to the electric push rod 29 on the offset side of the stretch film. At this time, the electric push rod 29 starts slowly, driving the limiting block 28 to slide upward. At this time, a height difference appears between the two limiting blocks 28. The adjusting block 24 on the raised side rotates at an angle closer to the correction roller 2. During rotation, the bearing 26 provides high-precision control to maintain the stability of the adjusting block 24 during rotation. When a height difference appears between the two adjusting blocks 24, the telescopic cam 23 slides along the telescopic groove 22 into the long rod 21, automatically adapting to the shortening of the distance between the long rod 21 and the telescopic cam 23 when the height difference occurs. At this time, the correction roller 2 tilts due to the height difference. At the same time, the friction force on the offset stretch film increases, while the friction force on the other side decreases. The change in friction further improves the correction effect on the stretch film.

Claims

1. A web-aligning device for stretch film winding, characterized in that, Include: Assembly plate (1), with side plates (11) fixedly provided on both sides of the top of the assembly plate (1), and guide rollers (12) rotatably provided between the two side plates (11). The straightening roller (2) is set on the top of the assembly plate (1). The two ends of the straightening roller (2) are driven by external force to adjust the height, which is used to straighten the stretch film. The U-shaped frame (3) is rotatably mounted on the top of the assembly plate (1) and is driven to rotate by external force to adjust the horizontal angle of the correction roller (2); The two ends of the U-shaped frame (3) are correspondingly arranged with the two ends of the correction roller (2). Both ends of the U-shaped frame (3) are fixedly provided with electric push rods (29) for driving the correction roller (2) to rise and fall. The driving end of the electric push rod (29) is movably connected to the two ends of the correction roller (2).

2. The web-aligning device for stretch film winding according to claim 1, characterized in that: A worm gear (31) is fixedly installed at the middle position of the bottom of the U-shaped frame (3). A worm (34) is meshed on the outside of the worm gear (31). One end of the worm (34) is fixedly connected to the drive end of the motor (33). The motor (33) is fixedly installed inside the assembly frame (32). The assembly frame (32) is fixedly installed on the top surface of the assembly plate (1). The end of the worm (34) away from the motor (33) is rotatably installed on the side wall of the assembly frame (32).

3. The web-aligning device for stretch film winding according to claim 1, characterized in that: The correction roller (2) is rotatably mounted on the outside of the long rod (21). A telescopic protrusion (23) is slidably mounted on one end of the long rod (21). An adjustment block (24) is fixedly mounted on the ends of the long rod (21) and the telescopic protrusion (23) that are far apart from each other. Each of the adjusting blocks (24) has a fixed rotating block (25) at its bottom. The inner ring of the rotating block (25) is rotatably provided with a fixed pin (27) via a bearing (26). The fixed pin (27) is fixedly provided inside the limiting rotating block (28). The limiting rotating block (28) is fixedly provided at the driving end of the electric push rod (29). The electric push rod (29) is fixedly provided inside one end of the U-shaped frame (3).

4. The web-aligning device for stretch film winding according to claim 3, characterized in that: The inner side of the long rod (21) is provided with a telescopic groove (22) corresponding to the telescopic protrusion (23), and the outer side of the telescopic groove (22) is provided with retaining rings at both ends of the correction roller (2).

5. The web-correcting device for stretch film winding according to claim 1, characterized in that: The side plate (11) has an arc-shaped groove (13) on the side near the correction roller (2), and the side plate (11) near the U-shaped frame (3) has a connecting groove (14) connected to the arc-shaped groove (13). The two ends of the U-shaped frame (3) are located inside the side plate (11) and are slidably arranged inside the arc-shaped groove (13).

6. The web-aligning device for stretch film winding according to claim 1, characterized in that: The bottom of the assembly plate (1) is fixedly provided with two sets of support legs (15), and two sets of guide rollers (12) are symmetrically arranged between the side plates (11) on both sides. The two sets of guide rollers (12) are located on the front and rear sides of the correction roller (2) respectively.

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