A slitting and rewinding machine film lifting device

Abstract

The utility model discloses a kind of slitting and switching roll mechanical film lifting devices, relate to film slitting and switching roll technical field, including operation platform, the outside fixed connection of operation platform has winding column, support frame and vertical plate, the outside of operation platform is provided with sliding slot, the inside sliding connection of sliding slot has sliding plate, the side fixed connection of sliding plate has lifting seat, the outside rotation connection of lifting seat has second conveying roller, the other side fixed connection of sliding plate has fixed plate, the inside sliding connection of operation platform has mounting plate, positioning mechanism is installed between fixed plate and mounting plate, rebound mechanism is installed between mounting plate and the inside of operation platform, tension sensing mechanism is installed between lifting seat and operation platform. The device uses bevel gear engagement self-locking to realize lifting seat arbitrary height instant positioning, simultaneously through tension spring deformation real-time detection film tension, replace manual adjustment, both cooperation ensures that film automatically keeps optimum tension when changing roll, significantly improves cutting accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of film splitting and rewinding technology, specifically to a mechanical film lifting device for splitting and rewinding. Background Technology

[0002] In industries such as film processing and packaging printing, the winding and switching of film materials on continuous production lines is a core process. With ever-increasing demands for production efficiency, the speed and precision of the film switching operation directly impact product quality and production capacity. After winding a roll of film, it needs to be lifted to a suitable height for cutting and transfer to a new roll. The key technical challenge is to quickly and stably complete this lifting action while precisely controlling the film tension to prevent slack or overstretching. Currently, automated and highly efficient film switching equipment has become a major direction for industry development.

[0003] Currently, existing mechanical film lifting devices in film slitting lines typically include a winding mechanism, a conveying roller, and a liftable film lifting component. After the film is fully wound, the operator lifts the film lifting component manually or mechanically to move the film away from the full roll position for cutting and roll changing operations. These devices are basically capable of completing the film lifting action.

[0004] However, the aforementioned existing technologies face significant challenges in application. First, the film lifting component struggles to achieve rapid and stable positioning at any height during the lifting process, typically requiring additional locking mechanisms or repeated adjustments, resulting in inconvenient operation and low efficiency. Second, the lack of real-time sensing and automatic control mechanisms for film tension during lifting makes the film prone to slack and sagging or accidental breakage due to improper tension, directly affecting cutting accuracy and the initial winding quality of new rolls. Operators often need to manually intervene in tension based on experience, increasing operational complexity and making it difficult to guarantee consistent process results. These issues hinder further improvements in the overall efficiency of roll switching and the stability of product quality.

[0005] Based on this, the present invention designs a mechanical film lifting device for switching rolls to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a mechanical film lifting device for switching rolls.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A film-lifting device for switching film rolls includes an operating table, a positioning mechanism, a rebound mechanism, and a tension sensing mechanism. The operating table is externally fixedly connected to a winding column, a support frame, and two sets of symmetrically arranged upright plates. The upright plates and the winding column are mounted on both sides of the support frame. A sliding groove is formed on the exterior of the operating table, and a sliding plate is slidably connected to the inner side of the groove. A lifting seat is fixedly connected to one side of the sliding plate, and two sets of closely spaced second conveying rollers are rotatably connected to the exterior of the lifting seat. A fixing plate is fixedly connected to the other side of the sliding plate. An mounting plate is slidably connected inside the operating table. The positioning mechanism is installed between the fixing plate and the mounting plate. The rebound mechanism is installed between the mounting plate and the inner side of the operating table. The tension sensing mechanism is installed between the lifting seat and the operating table.

[0009] Furthermore, a winding cylinder is sleeved and rotatably connected to the outside of the winding column, and a threaded groove is opened at the end of the winding column. A positioning sleeve is threadedly connected to the outside of the threaded groove, and the positioning sleeve is in contact with and slidably connected to the outside of the winding cylinder.

[0010] Furthermore, two sets of first conveying rollers that are close to each other are rotatably connected between the two sets of upright plates. A drive motor is fixedly connected to the outside of the operating table, and the output shaft of the drive motor is fixedly connected to the first conveying rollers. The lifting seat abuts against the upper side of the support frame. The winding drum, the two sets of first conveying rollers and the two sets of second conveying rollers are at the same height. Handles are fixedly connected to both sides of the lifting seat.

[0011] Furthermore, the positioning mechanism includes a first toothed plate and a second toothed plate. The first toothed plate is fixedly connected to one side of the fixed plate, and the second toothed plate is fixedly connected to one side of the mounting plate. The second toothed plate and the first toothed plate are engaged with each other. The serrations of the first toothed plate and the second toothed plate are both right-angled triangular shapes. When the first toothed plate has a downward tendency, the right-angled sides of the serrations of the first toothed plate and the second toothed plate abut against each other.

[0012] Furthermore, the rebound mechanism includes a compression spring and a telescopic rod, which are fixedly connected between the mounting plate and the operating table. The compression spring and the telescopic rod are arranged in several groups and are vertically arranged. The compression spring is sleeved on the outside of the telescopic rod.

[0013] Furthermore, a pull rod is fixedly connected to one side of the mounting plate, and the pull rod is slidably connected to the outside of the operating table. There are two sets of pull rods arranged symmetrically, and the end of the pull rod protrudes outside the operating table and is fixedly connected to a connecting plate.

[0014] Furthermore, the tension sensing mechanism includes a tension sensor, a pull plate, and a tension spring. A connection port is provided on the lower side of the support frame, and a mounting groove is provided on the upper side of the operating table, with the mounting groove located directly below the connection port. The tension sensor is fixedly connected to the inner side of the mounting groove, the pull plate is fixedly connected to the outside of the top sensing plate of the tension sensor, one end of the tension spring is fixedly connected to the top of the pull plate, and the other end of the tension spring passes through the connection port and is fixedly connected to the bottom of the lifting seat.

[0015] Furthermore, a PLC processor is fixedly connected to the upper side of the operating console. The PLC processor is electrically connected to the drive motor, and the PLC processor is communicatively connected to the tension sensor.

[0016] Compared with the prior art, the advantages of this utility model are as follows: 1. The mechanical film lifting device for switching rolls can automatically compress the spring and immediately engage and lock with the right-angle side of the next tooth position during the lifting process through the inclined tooth meshing structure. It can obtain stable support at any height without additional locking steps, which significantly simplifies the operation and improves the positioning speed and reliability, ensuring accurate cutting position.

[0017] 2. This film lifting device for switching rolls synchronously stretches the tension spring through the lifting action. The change in tension is captured in real time by the sensor and converted into film tension data. The processor dynamically adjusts the tension based on this data to ensure that the film is always under the most suitable tension during the lifting and positioning process, avoiding slack or breakage, and ensuring the cutting quality and the initial smoothness of the new roll. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a mechanical film lifting device for switching rolls according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a partial side sectional view of the present invention;

[0022] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0023] Figure 5for Figure 3 Enlarged view of point C in the middle;

[0024] Figure 6 This is a second perspective view of the present invention;

[0025] Figure 7 for Figure 6 Enlarged view of point D in the middle;

[0026] Figure 8 for Figure 3 Enlarged view of point E in the middle.

[0027] The labels in the diagram represent:

[0028] 1. Control panel; 2. Winding column; 3. Winding drum; 4. Positioning sleeve; 5. Vertical plate; 6. First conveyor roller; 7. Drive motor; 8. Support frame; 9. Lifting seat; 10. Second conveyor roller; 11. Slide groove; 12. Slide plate; 13. Fixing plate; 14. First toothed plate; 15. Mounting plate; 16. Second toothed plate; 17. Compression spring; 18. Telescopic rod; 19. Pull rod; 20. Connecting plate; 21. Connection port; 22. Mounting groove; 23. Tension sensor; 24. Pull plate; 25. Tension spring; 26. PLC processor; 27. Handle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-8A film-lifting device for switching and rolling film includes an operating table 1, a positioning mechanism, a spring mechanism, and a tension sensing mechanism. The operating table 1 is externally fixedly connected to a winding column 2, a support frame 8, and two sets of symmetrically arranged vertical plates 5. The vertical plates 5 and the winding column 2 are installed on both sides of the support frame 8. A winding cylinder 3 is sleeved and rotatably connected to the outside of the winding column 2. The winding cylinder 3 is used to wind up film material. A threaded groove is opened at the end of the winding column 2, and a positioning sleeve 4 is threadedly connected to the outside of the threaded groove. The positioning sleeve 4 is used to limit the position of the winding cylinder 3, and is in contact with and slidably connected to the outside of the winding cylinder 3. Two sets of closely spaced first conveying rollers 6 are rotatably connected between the two sets of vertical plates 5. The first conveying rollers 6 are used to convey film material. A drive motor 7 is externally fixedly connected to the operating table 1. The drive motor 7 is used to drive the first conveying rollers 6 to rotate, and the output shaft of the drive motor 7 is fixedly connected to the first conveying rollers 6.

[0031] The operating table 1 has a slide groove 11 on its outside. A slide plate 12 is slidably connected to the inside of the slide groove 11. A lifting seat 9 is fixedly connected to one side of the slide plate 12. The lifting seat 9 is used to lift the film. The lifting seat 9 abuts against the upper side of the support frame 8. The winding drum 3, two sets of first conveying rollers 6 and two sets of second conveying rollers 10 are at the same height to ensure smooth film conveying. Handles 27 are fixedly connected to both sides of the lifting seat 9. The handles 27 make it easy for the operator to manually control the lifting seat 9 to lift. Two sets of second conveying rollers 10 that are close to each other are rotatably connected to the outside of the lifting seat 9. The second conveying rollers 10 are used to support the film during the lifting process. A fixing plate 13 is fixedly connected to the other side of the slide plate 12. An installation plate 15 is slidably connected to the inside of the operating table 1.

[0032] The positioning mechanism is installed between the fixed plate 13 and the mounting plate 15. The positioning mechanism includes a first toothed plate 14 and a second toothed plate 16. The first toothed plate 14 is fixedly connected to one side of the fixed plate 13, and the second toothed plate 16 is fixedly connected to one side of the mounting plate 15. The second toothed plate 16 and the first toothed plate 14 are engaged. The serrations of the first toothed plate 14 and the second toothed plate 16 are both right-angled triangular shapes. When the first toothed plate 14 has a downward tendency, the right-angled sides of the serrations of the first toothed plate 14 and the second toothed plate 16 abut against each other. The positioning of the lifting seat 9 is achieved through the engagement of the serrations.

[0033] The rebound mechanism is installed between the mounting plate 15 and the inner side of the operating table 1. The rebound mechanism includes a compression spring 17 and a telescopic rod 18. The compression spring 17 and the telescopic rod 18 are fixedly connected between the mounting plate 15 and the operating table 1. There are several sets of compression springs 17 and telescopic rods 18 arranged vertically. The compression spring 17 is sleeved on the outside of the telescopic rod 18. The compression spring 17 is used to provide the reset force. The telescopic rod 18 is used to limit the movement direction of the compression spring 17. A pull rod 19 is fixedly connected to one side of the mounting plate 15. The pull rod 19 is slidably connected to the outside of the operating table 1. There are two sets of pull rods 19 arranged symmetrically. The end of the pull rod 19 protrudes out of the operating table 1 and is fixedly connected to a connecting plate 20. By pulling the connecting plate 20, the pull rod 19 can be pulled to disengage the first toothed plate 14 from the second toothed plate 16, so that the lifting seat 9 can slide down and reset.

[0034] The tension sensing mechanism is installed between the lifting base 9 and the operating table 1. The tension sensing mechanism includes a tension sensor 23, a pull plate 24, and a tension spring 25. A connection port 21 is provided on the lower side of the support frame 8, and a mounting groove 22 is provided on the upper side of the operating table 1. The mounting groove 22 is located directly below the connection port 21. The tension sensor 23 is fixedly connected to the inner side of the mounting groove 22. The tension sensor 23 is used to detect the tension of the film. The pull plate 24 is fixedly connected to the outside of the top sensing plate of the tension sensor 23. One end of the tension spring 25 is fixedly connected to the top of the pull plate 24, and the other end of the tension spring 25 passes through the connection port 21 and is fixedly connected to the bottom of the lifting base 9. The tension spring 25 is used to transmit the displacement changes of the lifting base 9.

[0035] A PLC processor 26 is fixedly connected to the upper side of the control panel 1. The PLC processor 26 is used to control the operation of the entire device. The PLC processor 26 is electrically connected to the drive motor 7 and is communicatively connected to the tension sensor 23 to realize the real-time measurement of film tension.

[0036] In this embodiment, when the film-lifting device is working, the drive motor 7 starts and drives the two sets of first conveying rollers 6 to rotate, conveying the film to the winding drum 3 and winding it. When the film on the winding drum 3 reaches the full roll state, the drive motor 7 stops running. At this time, the operator holds the handles 27 on both sides of the lifting seat 9 and pulls it upward. The lifting seat 9 drives the slide plate 12 below it to move upward along the slide groove 11 on the operating table 1, thereby driving the fixed plate 13 and the first toothed plate 14 to move upward together.

[0037] During the upward movement, the inclined surface of the first toothed plate 14 presses against the inclined surface of the second toothed plate 16 that meshes with it, forcing the mounting plate 15 to slide a short distance into the operating table 1 against the elastic force of the compression spring 17, while compressing the compression spring 17. Once the first toothed plate 14 passes the current tooth position, the mounting plate 15 immediately resets under the elastic force of the compression spring 17, so that the right-angled edge of the second toothed plate 16 and the next set of teeth of the first toothed plate 14 re-engages. This meshing structure allows the lifting seat 9 to quickly and stably stop at any desired height position and achieve self-locking during the upward movement.

[0038] Simultaneously, the upward movement of the lifting seat 9 stretches the tension spring 25 at its bottom. The tension spring 25 transmits the tension to the tension sensor 23 fixed in the mounting groove 22 through the pull plate 24. The tension sensor 23 senses the tension data in real time and transmits the data to the PLC processor 26 through the communication line. The PLC processor 26 processes this tension data and converts it into tension data to ensure that the film maintains the most suitable tension state during the lifting process. After positioning, the lifting seat 9 places the second conveying roller 10 at a suitable height, which facilitates the film cutting operation between the second conveying roller 10 and the fully wound winding drum 3. Finally, by unscrewing the positioning sleeve 4 at the end of the winding column 2, the fully wound winding drum 3 can be removed for replacement.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mechanical film lifting device for switching rolls, comprising an operating table (1), characterized in that: It also includes a positioning mechanism, a rebound mechanism and a tension sensing mechanism. The operation table (1) is fixedly connected to a winding column (2), a support frame (8) and two sets of symmetrically arranged upright plates (5). The upright plates (5) and the winding column (2) are installed on both sides of the support frame (8). The operation table (1) is provided with a sliding groove (11). The sliding groove (11) is slidably connected to a sliding plate (12). One side of the sliding plate (12) is fixedly connected to a lifting seat (9). The lifting seat (9) is rotatably connected to two sets of closely spaced second conveying rollers (10). The other side of the sliding plate (12) is fixedly connected to a fixing plate (13). The operation table (1) is slidably connected to an installation plate (15). The positioning mechanism is installed between the fixing plate (13) and the installation plate (15). The rebound mechanism is installed between the installation plate (15) and the inner side of the operation table (1). The tension sensing mechanism is installed between the lifting seat (9) and the operation table (1).

2. The mechanical film lifting device for switching rolls according to claim 1, characterized in that, The winding column (2) is sleeved on the outside and rotatably connected to the winding cylinder (3). The end of the winding column (2) is provided with a threaded groove, and the threaded groove is threadedly connected to the outside of the threaded groove with a positioning sleeve (4). The positioning sleeve (4) is attached to the outside of the winding cylinder (3) and slidably connected to it.

3. The mechanical film lifting device for switching rolls according to claim 2, characterized in that, Two sets of first conveying rollers (6) are rotatably connected between the two sets of upright plates (5). A drive motor (7) is fixedly connected to the outside of the operating table (1), and the output shaft of the drive motor (7) is fixedly connected to the first conveying roller (6). The lifting seat (9) abuts against the upper side of the support frame (8). The winding drum (3), the two sets of first conveying rollers (6) and the two sets of second conveying rollers (10) are at the same height. Handles (27) are fixedly connected to both sides of the lifting seat (9).

4. The mechanical film lifting device for switching rolls according to claim 1, characterized in that, The positioning mechanism includes a first toothed plate (14) and a second toothed plate (16). The first toothed plate (14) is fixedly connected to one side of the fixed plate (13), and the second toothed plate (16) is fixedly connected to one side of the mounting plate (15). The second toothed plate (16) meshes with the first toothed plate (14). The serrations of the first toothed plate (14) and the second toothed plate (16) are both right-angled triangular shapes. When the first toothed plate (14) has a downward tendency, the right-angled sides of the serrations of the first toothed plate (14) and the second toothed plate (16) abut against each other.

5. The mechanical film lifting device for switching rolls according to claim 1, characterized in that, The rebound mechanism includes a compression spring (17) and a telescopic rod (18). The compression spring (17) and the telescopic rod (18) are fixedly connected between the mounting plate (15) and the operating table (1). The number of compression springs (17) and telescopic rods (18) is several sets and arranged vertically. The compression spring (17) is sleeved on the outside of the telescopic rod (18).

6. The mechanical film lifting device for switching rolls according to claim 1, characterized in that, A pull rod (19) is fixedly connected to one side of the mounting plate (15), and the pull rod (19) is slidably connected to the outside of the operating table (1). There are two sets of pull rods (19) arranged symmetrically. The end of the pull rod (19) protrudes out of the operating table (1) and is fixedly connected to a connecting plate (20).

7. The mechanical film lifting device for switching rolls according to claim 3, characterized in that, The tension sensing mechanism includes a tension sensor (23), a pull plate (24), and a tension spring (25). A connection port (21) is provided on the lower side of the support frame (8), and a mounting groove (22) is provided on the upper side of the operating table (1). The mounting groove (22) is located directly below the connection port (21). The tension sensor (23) is fixedly connected to the inner side of the mounting groove (22). The pull plate (24) is fixedly connected to the outside of the top sensing plate of the tension sensor (23). One end of the tension spring (25) is fixedly connected to the top of the pull plate (24), and the other end of the tension spring (25) passes through the connection port (21) and is fixedly connected to the bottom of the lifting seat (9).

8. The mechanical film lifting device for switching rolls according to claim 7, characterized in that, A PLC processor (26) is fixedly connected to the upper side of the operating console (1). The PLC processor (26) is electrically connected to the drive motor (7), and the PLC processor (26) is communicatively connected to the tension sensor (23).

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