A device for improving the replacement efficiency of take-up and unwinding air expansion rollers.

Abstract

This invention discloses a device for improving the replacement efficiency of take-up and unwinding air rollers, relating to the technical field of air roller replacement equipment. The device includes a mounting frame, a sliding frame, a clamping mechanism, a first roller, a second roller, an arc-shaped flexible plate, a first rack, a first gear, and a pull rope. In this invention, the first and second rollers are mounted on the mounting frame, and the clamping mechanism on the sliding frame holds one end of the take-up and unwinding roller, causing the take-up and unwinding roller to slide on the first and second rollers. By adding the first and second rollers, the take-up and unwinding roller can slide on the mounting frame, greatly saving labor and time, improving production efficiency, and enhancing safety. Guided by the fixed ring and guide ring, the pull rope tightens the arc-shaped flexible plate, making the surface of the arc-shaped flexible plate and the end surface of the take-up and unwinding air roller more tightly wrapped, thereby ensuring better clamping stability of the clamping mechanism for the take-up and unwinding air roller.

Description

Technical Field

[0001] This invention relates to the field of air roller replacement equipment technology, specifically to a device for improving the replacement efficiency of air rollers during take-up and unwinding. Background Technology

[0002] In the thin film vacuum roll coating production process, the unwinding and winding actions are driven by a motor to rotate an air shaft. The air shaft clamps the film roll core to transmit the motor's rotation. At the end of each coating process, it is necessary to replace the unwound original film or the wound finished film roll, and the air shaft needs to be transferred from one film roll to another.

[0003] Patent (CN206767214U) discloses an air shaft replacement device, including a set screw, a base, a wheel, an axle, a hydraulic cylinder base, screw I, a hydraulic rod, a hydraulic cylinder, a lower tray, an air shaft mandrel, an upper tray, screw II, and an air shaft. This device can reduce the physical exertion of operators and improve replacement efficiency when replacing air shafts. The set screw is connected to the base, the wheel to the axle, the axle to the base, the hydraulic cylinder base to the base via screw I, and the hydraulic cylinder base is located at the upper end of the base. The hydraulic rod is connected to the hydraulic cylinder, the hydraulic rod to the lower tray, the hydraulic cylinder to screw I, the lower tray to the upper tray via screw II, and the air shaft mandrel to the air shaft.

[0004] In the air shaft replacement device described in the aforementioned patent document, the two ends of the air shaft are placed between two lower trays and an upper tray, respectively. When replacing the take-up and untake-up air shaft, the take-up and untake-up rollers need to be pulled out, lifted up, and inserted into another film roll. Since the air shaft is relatively heavy, this operation is extremely inconvenient, inefficient, and unsafe. Summary of the Invention

[0005] The purpose of this invention is to provide a device for improving the efficiency of changing take-up and unwinding air expansion rollers, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for improving the replacement efficiency of take-up and unwinding air expansion rollers, comprising a mounting frame and a sliding frame, wherein the sliding frame is slidably disposed on the top of the mounting frame, and a clamping mechanism is provided at the bottom of the outer wall of the sliding frame; a plurality of first rollers rotatably connected are inclinedly disposed on one side of the inner wall of the mounting frame, and a plurality of second rollers rotatably connected are inclinedly disposed on the other side of the inner wall of the mounting frame.

[0007] Furthermore, a support plate is horizontally provided at the bottom inner side of the mounting bracket, and the bottoms of the first roller and the second roller are rotatably connected to the support plate respectively. The first roller and the second roller are symmetrically arranged on both sides of the outer wall of the support plate.

[0008] Furthermore, the clamping mechanism includes a first arc-shaped clamping frame and a second arc-shaped clamping frame. The first arc-shaped clamping frame is positioned above the second arc-shaped clamping frame. The bottom of the second arc-shaped clamping frame is provided with a slidably connected support rod. The top of the support plate is provided with a slide rail that matches the support rod. The inner sides of the first and second arc-shaped clamping frames are symmetrically provided with movably connected arc-shaped flexible plates. The outer wall of the arc-shaped flexible plate is provided with a plurality of springs. One end of each spring is fixedly connected to the inner wall of the first and second arc-shaped clamping frames. A support strip is provided at the center of the outer wall of the arc-shaped flexible plate. The inner walls of the first and second arc-shaped clamping frames are provided with buffer grooves that match the support bars. The outer walls of the support bars are symmetrically provided with first racks on both sides. The inner walls of the buffer grooves are rotatably provided with first gears that mesh with the first racks. The outer walls of the first gears are provided with take-up rollers. The outer walls of the arc-shaped flexible plates are symmetrically provided with pull ropes on both sides. One end of the pull rope is connected to the take-up roller. The clamping mechanism is provided with a servo electric cylinder above the first arc-shaped clamping frame. The output end of the servo electric cylinder is fixedly connected to the top of the first arc-shaped clamping frame. The outer walls of the arc-shaped flexible plates are provided with several flexible blocks on the side away from the spring.

[0009] Furthermore, the inner walls of the first and second arc-shaped clamping frames are provided with mounting grooves that match the springs. Both the first and second arc-shaped clamping frames are semi-circular arc structures, and the first and second arc-shaped clamping frames are of equal size.

[0010] Furthermore, both ends of the outer wall of the arc-shaped flexible plate are provided with fixing rings, and the outer wall of the arc-shaped flexible plate is provided with several guide rings that match the pull rope.

[0011] Furthermore, each of the first and second arc-shaped clamping frames has a second rack on an adjacent side of its outer wall. Each of the first and second arc-shaped clamping frames has a through groove that matches the second rack. A second gear that meshes with the second rack is rotatably provided on one side of the outer wall of the through groove. Each of the first and second arc-shaped clamping frames has a third gear that meshes with the second gear on its inner wall. A support shaft is sleeved at the center of the inner wall of the third gear. An eccentric wheel is sleeved on the outer wall of the support shaft. An movable groove that matches the eccentric wheel is provided on the outer side of the arc-shaped flexible plate on the inner wall of the first and second arc-shaped clamping frames.

[0012] Furthermore, adjacent second racks are staggered and oriented in opposite directions, and the second racks and through slots on the first arc-shaped clamping frame are staggered.

[0013] Furthermore, the inner walls of the first arc-shaped clamping frame and the second arc-shaped clamping frame are respectively provided with mounting cavities that match the second gear and the third gear. The mounting cavities are connected to the through groove, and the movable groove is isolated from the mounting cavities.

[0014] Furthermore, the outer walls of the first and second arc-shaped clamping frames are fitted with ratchet wheels that are slidably connected to the outside of the support shaft. The outer wall of the support shaft is rotatably provided with a pawl that matches the ratchet wheel. The pawl and the support shaft are connected by a torsion spring.

[0015] Furthermore, the outer wall of the ratchet is provided with a plurality of slide bars, the outer walls of the first arc-shaped clamping frame and the second arc-shaped clamping frame are provided with through holes that match the ratchet, the outer walls of the through holes are provided with slide grooves that match the slide bars, and an elastic band is provided between the outer walls of the two ratchets on the same side.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] 1. This invention, by setting up an mounting frame, a sliding frame, a clamping mechanism, a first roller, a second roller, an arc-shaped flexible plate, a first rack, a first gear, and a pull rope, allows the first and second rollers to be mounted on the mounting frame. The clamping mechanism on the sliding frame holds one end of the take-up and unwinding roller, causing the take-up and unwinding roller to slide on the first and second rollers. By adding the first and second rollers, the take-up and unwinding roller can slide on the mounting frame, greatly saving labor and time, improving production efficiency, and enhancing safety. When the end of the take-up and unwinding air-expanding roller is placed between the first and second arc-shaped clamping frames, the end of the take-up and unwinding air-expanding roller presses down on the second arc-shaped clamping frame, and the arc-shaped flexible plate and the end of the take-up and unwinding air-expanding roller are tightly pressed together. The arc-shaped flexible plate, in conjunction with the take-up and unwinding roller, creates a sliding mechanism that allows the take-up and unwinding roller to slide on the first and second rollers. When the end of the air-expanding roller is tightened, the support bar on the curved flexible plate moves inward toward the buffer groove, the spring is compressed, and the first rack moves with the support bar. The first rack meshes with the first gear, and the linear motion of the first rack drives the first gear to rotate. The first gear drives the take-up roller to rotate, and the take-up roller drives the pull rope to wrap around the take-up roller. The pull rope tightens, and under the guidance of the fixed ring and the guide ring, the pull rope tightens the curved flexible plate, making the surface of the curved flexible plate and the end surface of the take-up and unwinding air-expanding roller more tightly wrapped. The contact between the surface of the curved flexible plate and the end surface of the take-up and unwinding air-expanding roller is more stable, thereby ensuring better clamping stability of the clamping mechanism on the take-up and unwinding air-expanding roller, and thus improving the stability and safety of the take-up and unwinding air-expanding roller sliding on the first roller and the second roller.

[0018] 2. In this invention, by setting a second rack, a through groove, a second gear, a third gear, an eccentric wheel, a ratchet, and a pawl, when the first arc-shaped clamping frame moves up and down, the second rack on the first arc-shaped clamping frame slides along the inner side of the through groove of the second arc-shaped clamping frame, and the second rack on the second arc-shaped clamping frame slides along the inner side of the through groove of the first arc-shaped clamping frame. When the second rack slides along the through groove, the second rack drives the second gear to rotate, the second gear drives the third gear to rotate, the third gear drives the support shaft to rotate, and the support shaft drives the eccentric wheel to rotate. The eccentric wheel extends from inside the active groove. When the arc-shaped flexible plate clamps the end face of the take-up and unwinding air expansion roller, the eccentric wheel presses the arc-shaped flexible plate tightly, ensuring the safety and stability of the arc-shaped flexible plate and preventing the arc-shaped flexible plate from shifting, thus ensuring the safety and stability of the take-up and unwinding air expansion roller. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a front view of the clamping mechanism of the present invention;

[0022] Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a front sectional view of the clamping mechanism of the present invention;

[0024] Figure 5 This is the present invention. Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is the present invention. Figure 4 Enlarged view of point C in the middle;

[0026] Figure 7 This is a front sectional view of another location of the clamping mechanism of the present invention;

[0027] Figure 8 This is a schematic diagram of the connection between the support shaft and the ratchet of the present invention;

[0028] In the diagram: 1. Mounting frame; 2. Sliding frame; 3. Clamping mechanism; 4. First roller; 5. Second roller; 6. Support plate; 7. First arc-shaped clamping frame; 8. Second arc-shaped clamping frame; 9. Support rod; 10. Slide rail; 11. Arc-shaped flexible plate; 12. Spring; 13. Support bar; 14. Buffer groove; 15. First rack; 16. First gear; 17. Take-up roller; 18. Pull rope; 19. Servo cylinder; 20. Mounting groove; 21. Fixing ring; 22. Guide ring; 23. Second rack; 24. Through groove; 25. Second gear; 26. Third gear; 27. Support shaft; 28. Eccentric wheel; 29. ​​Movable groove; 30. Mounting cavity; 31. Ratchet; 32. Pawl; 33. Elastic band; 34. Flexible block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-5The device shown is for improving the efficiency of changing take-up and unwinding air expansion rollers. It includes a mounting frame 1 and a sliding frame 2. The sliding frame 2 is slidably mounted on the top of the mounting frame 1. A clamping mechanism 3 is provided at the bottom of the outer wall of the sliding frame 2. A plurality of first rollers 4 are rotatably connected to one side of the inner wall of the mounting frame 1, and a plurality of second rollers 5 are rotatably connected to the other side of the inner wall of the mounting frame 1. A support plate 6 is horizontally provided at the bottom of the inner side of the mounting frame 1. The bottoms of the first rollers 4 and second rollers 5 are rotatably connected to the support plate 6, and the first rollers 4 and second rollers 5 are symmetrically arranged on both sides of the outer wall of the support plate 6. The clamping mechanism 3 includes a first arc-shaped clamping frame 7 and a second arc-shaped clamping frame 8. The first arc-shaped clamping frame 7 is located above the second arc-shaped clamping frame 8. A support rod 9 is slidably connected to the bottom of the second arc-shaped clamping frame 8. A slide rail 10 matching the support rod 9 is provided at the top of the support plate 6. A movable sliding rail 10 is symmetrically arranged on the inner sides of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8. An arc-shaped flexible plate 11 is dynamically connected. The outer wall of the arc-shaped flexible plate 11 is provided with several springs 12. One end of each spring 12 is fixedly connected to the inner wall of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8, respectively. A support bar 13 is provided at the center of the outer wall of the arc-shaped flexible plate 11. The inner walls of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 are provided with buffer grooves 14 that match the support bar 13. The outer walls of the support bar 13 are symmetrically provided with first racks 15. The inner walls of the buffer grooves 14 are rotatably provided with first gears 16 that mesh with the first racks 15. The outer walls of the first gears 16 are provided with take-up rollers 17. The outer walls of the arc-shaped flexible plate 11 are symmetrically provided with pull ropes 18. One end of each pull rope 18 is connected to the take-up rollers 17. The clamping mechanism 3 is provided with a servo electric cylinder 19 above the first arc-shaped clamping frame 7. The output end of the servo electric cylinder 19 is fixedly connected to the top of the first arc-shaped clamping frame 7. The outer wall of the arc-shaped flexible plate 11 away from the springs 12 is provided with several flexible blocks 34.

[0031] The inner walls of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 are provided with mounting grooves 20 that match the spring 12. The mounting grooves 20 provide space for the spring 12 to be installed and to extend. The first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 are both semi-circular arc structures. The first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 are of equal size. The semi-circular arc structure design makes it easier for the clamping mechanism 3 to clamp the take-up and unwinding air expansion rollers. The outer walls of the arc-shaped flexible plate 11 are provided with fixing rings 21 at both ends. The outer walls of the arc-shaped flexible plate 11 are provided with several guide rings 22 that match the pull rope 18. The fixing rings 21 fix the ends of the pull rope 18, and the guide rings 22 guide the pull rope 18.

[0032] The specific implementation method is as follows: In use, by setting up a mounting frame 1, a sliding frame 2, a clamping mechanism 3, a first roller 4, a second roller 5, an arc-shaped flexible plate 11, a first rack 15, a first gear 16, and a pull rope 18, the first roller 4 and the second roller 5 are installed on the mounting frame 1. The clamping mechanism 3 on the sliding frame 2 holds one end of the take-up and unwinding roller and slides it, driving the take-up and unwinding roller to slide on the first roller 4 and the second roller 5. By adding the first roller 4 and the second roller 5, the take-up and unwinding roller can slide on the mounting frame 1, which greatly saves labor and time, improves production efficiency, and improves safety.

[0033] When the clamping mechanism 3 is working, the servo cylinder 19 is adjusted to extend and retract, and the servo cylinder 19 drives the first arc-shaped clamping frame 7 to move up and down. As the first arc-shaped clamping frame 7 moves up and down, the arc-shaped flexible plate 11 moves up and down with the first arc-shaped clamping frame 7. When the arc-shaped flexible plate 11 contacts the end surface of the take-up and unwinding air expansion roller, the arc-shaped flexible plate 11 presses down along the end surface of the take-up and unwinding air expansion roller. When the end of the take-up and unwinding air expansion roller is placed between the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8, the end of the take-up and unwinding air expansion roller presses down on the second arc-shaped clamping frame 8, and the arc-shaped flexible plate 11 and the end of the take-up and unwinding air expansion roller are tightly attached and pressed together. When the arc-shaped flexible plate 11 is pressed together with the end of the take-up and unwinding air expansion roller, the support bar 13 on the arc-shaped flexible plate 11 moves inward toward the buffer groove 14, the spring 12 is compressed, and the first rack 15 moves with the support bar 13. The first rack 15 and the first gear 16 mesh, and the linear movement of the first rack 15 drives the first gear 16. The wheel 16 rotates, and the first gear 16 drives the take-up roller 17 to rotate. The take-up roller 17 drives the pull rope 18 to wrap around the take-up roller 17. The pull rope 18 tightens, and under the guidance of the fixed ring 21 and the guide ring 22, the pull rope 18 tightens the arc-shaped flexible plate 11, making the surface of the arc-shaped flexible plate 11 and the end surface of the take-up and unwinding air expansion roller more tightly wrapped. The contact between the surface of the arc-shaped flexible plate 11 and the end surface of the take-up and unwinding air expansion roller is more stable, thereby ensuring better clamping stability of the clamping mechanism 3 on the take-up and unwinding air expansion roller, and thus improving the stability and safety of the take-up and unwinding air expansion roller sliding on the first roller 4 and the second roller 5. When the sliding frame 2 drives the take-up and unwinding air expansion roller to move, the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 clamp the end of the take-up and unwinding air expansion roller. The first arc-shaped clamping frame 7 moves with the sliding frame 2, and the second arc-shaped clamping frame 8 moves under the support of the support rod 9. The support rod 9 slides along the slide rail 10.

[0034] When the clamping mechanism 3 is separated from the end of the take-up and unwinding air expansion roller, the adjusting servo cylinder 19 retracts, the servo cylinder 19 drives the first arc-shaped clamping frame 7 to rise, the support bar 13 slides along the outside of the buffer groove 14, the spring 12 rebounds, the pull rope 18 relaxes, and the arc-shaped flexible plate 11 resets.

[0035] This invention starts with the disassembly of the air shaft replacement process and develops a replacement tool that avoids the manual handling process, saves manpower, improves efficiency, and reduces safety hazards; this invention can be used with a support platform for height adjustment.

[0036] like Figures 4-8 The device shown is for improving the efficiency of changing take-up and unwinding air expansion rollers. A second rack 23 is provided on an adjacent side of the outer wall of both the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8. A through groove 24 matching the second rack 23 is provided on the outer wall of both the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8. A second gear 25 meshing with the second rack 23 is rotatably provided on one side of the outer wall of the through groove 24. A third gear 26 meshing with the second gear 25 is rotatably provided on the inner wall of both the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8. A support shaft 27 is sleeved at the center of the inner wall of the third gear 26, and an eccentric wheel 28 is sleeved on the outer wall of the support shaft 27. The first arc-shaped... The inner walls of the clamping frame 7 and the second arc-shaped clamping frame 8 are provided with movable grooves 29 that match the eccentric wheel 28 on the outer side of the arc-shaped flexible plate 11; the outer walls of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 are fitted with ratchet 31 that is slidably connected to the outer side of the support shaft 27; the outer wall of the support shaft 27 is provided with rotatable pawls 32 that match the ratchet 31; the pawls 32 and the support shaft 27 are connected by a torsion spring; the outer wall of the ratchet 31 is provided with a plurality of slide bars; the outer walls of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 are provided with through holes that match the ratchet 31; the outer walls of the through holes are provided with slide grooves that match the slide bars; and an elastic band 33 is provided between the outer walls of the two ratchet 31 located on the same side.

[0037] The two adjacent second racks 23 are staggered and face opposite directions. The second racks 23 and the through slots 24 on the first arc-shaped clamping frame 7 are staggered. The second racks 23 are distributed crosswise on the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 to avoid the second racks 23 from adversely affecting the lifting and lowering movement of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8. The inner walls of the first arc-shaped clamping frame 7 and the second arc-shaped clamping frame 8 are respectively provided with mounting cavities 30 that match the second gear 25 and the third gear 26. The mounting cavities 30 are connected to the through slots 24, and the second gear 25 and the third gear 26 can rotate simultaneously inside the mounting cavities 30. The movable slot 29 is isolated from the mounting cavity 30 to ensure the safety of the movement of the eccentric wheel 28.

[0038] The specific implementation method is as follows: In use, by setting the second rack 23, through groove 24, second gear 25, third gear 26, eccentric wheel 28, ratchet 31, and pawl 32, when the first arc-shaped clamping frame 7 moves up and down, the second rack 23 on the first arc-shaped clamping frame 7 slides along the inner side of the through groove 24 of the second arc-shaped clamping frame 8, and the second rack 23 on the second arc-shaped clamping frame 8 slides along the inner side of the through groove 24 of the first arc-shaped clamping frame 7. When the second rack 23 slides along the through groove 24, the second rack 23 drives the second gear 25 to rotate, the second gear 25 drives the third gear 26 to rotate, the third gear 26 drives the support shaft 27 to rotate, and the support shaft 27 drives the eccentric wheel 28 to rotate. The eccentric wheel 28 extends out from the movable groove 29. When the arc-shaped flexible plate 11 clamps the end face of the take-up and unwinding air expansion roller, the eccentric wheel 28 presses the arc-shaped flexible plate 11 tightly. To ensure the safety and stability of the curved flexible plate 11 and prevent its displacement, as well as the safety and stability of the take-up and unwinding air expansion rollers; the ratchet 31 is sleeved on the outside of the support shaft 27. In this invention, it is configured such that when the second rack 23 is inserted along the through groove 24, the ratchet 31 and the pawl 32 cooperate to ensure the normal rotation of the support shaft 27. When the second rack 23 is pulled out along the through groove 24, the ratchet 31 and the pawl 32 lock together, and the support shaft 27 cannot rotate. At this time, the second rack 23 cannot be pulled out of the through groove 24, and the eccentric wheel 28 is also locked. When it is necessary to adjust the separation of the first curved clamping frame 7 and the second curved clamping frame, the elastic band 33 is pulled outward first. The elastic band 33 pulls the ratchet 31 outward, and the ratchet 31 and the pawl 32 are separated and in a misaligned state, without contact. Then, the servo electric cylinder 19 is adjusted to retract.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for improving the replacement efficiency of take-up and unwinding air expansion rollers, comprising a mounting frame (1) and a sliding frame (2), characterized in that: The sliding frame (2) is slidably mounted on the top of the mounting frame (1). A clamping mechanism (3) is provided at the bottom of the outer wall of the sliding frame (2). Several first rollers (4) are rotatably connected on one side of the inner wall of the mounting frame (1), and several second rollers (5) are rotatably connected on the other side of the inner wall of the mounting frame (1). A support plate (6) is horizontally provided at the bottom of the inner side of the mounting frame (1). The bottoms of the first rollers (4) and the second rollers (5) are rotatably connected to the support plate (6). Symmetrically arranged on both sides of the outer wall of the support plate (6); the clamping mechanism (3) includes a first arc-shaped clamping frame (7) and a second arc-shaped clamping frame (8), the first arc-shaped clamping frame (7) is located above the second arc-shaped clamping frame (8), the bottom of the second arc-shaped clamping frame (8) is provided with a sliding support rod (9), the top of the support plate (6) is provided with a slide rail (10) that matches the support rod (9), and the inner sides of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are symmetrically provided with movably connected arc-shaped flexible plates (11), the arc-shaped flexible plates (11) are... The outer wall of the flexible plate (11) is provided with several springs (12). One end of each spring (12) is fixedly connected to the inner wall of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8). A support strip (13) is provided at the center of the outer wall of the arc-shaped flexible plate (11). The inner walls of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are provided with buffer grooves (14) that match the support strips (13). The outer walls of the support strips (13) are symmetrically provided with first racks (15). The inner walls of the buffer grooves (14) are rotatably provided with racks (15) that match the first racks (15). The first gear (16) meshes with the first gear (16), and the outer wall of the first gear (16) is provided with a take-up roller (17). The outer walls of the arc-shaped flexible plate (11) are symmetrically provided with pull ropes (18). One end of the pull rope (18) is connected to the take-up roller (17). The clamping mechanism (3) is provided with a servo electric cylinder (19) above the first arc-shaped clamping frame (7). The output end of the servo electric cylinder (19) is fixedly connected to the top of the first arc-shaped clamping frame (7). The outer wall of the arc-shaped flexible plate (11) is provided with several flexible blocks (34) on the side away from the spring (12).The first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are each provided with a second rack (23) on an adjacent side of their outer walls. The outer walls of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are each provided with a through groove (24) matching the second rack (23). A second gear (25) meshing with the second rack (23) is rotatably provided on one side of the outer wall of the through groove (24). The inner walls of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are each provided with a third gear (26) meshing with the second gear (25). A support shaft (27) is sleeved at the center of the inner wall of the third gear (26). An eccentric wheel (28) is sleeved on the outer wall of the support shaft (27). The inner walls of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are provided with a movable groove (29) matching the eccentric wheel (28) on the outer side of the arc-shaped flexible plate (11).

2. The device for improving the replacement efficiency of take-up and unwinding air expansion rollers according to claim 1, characterized in that: The inner walls of the first arc-shaped clamp (7) and the second arc-shaped clamp (8) are provided with mounting grooves (20) that match the spring (12). The first arc-shaped clamp (7) and the second arc-shaped clamp (8) are both semi-circular arc structures. The first arc-shaped clamp (7) and the second arc-shaped clamp (8) are of equal size.

3. The device for improving the replacement efficiency of take-up and unwinding air expansion rollers according to claim 1, characterized in that: The outer walls of the arc-shaped flexible plate (11) are provided with fixing rings (21) at both ends, and the outer walls of the arc-shaped flexible plate (11) are provided with a number of guide rings (22) that match the pull rope (18).

4. The device for improving the replacement efficiency of take-up and unwinding air expansion rollers according to claim 1, characterized in that: The two adjacent second racks (23) are staggered and the two adjacent second racks (23) face opposite directions. The second racks (23) and the through slots (24) on the first arc-shaped clamp (7) are staggered.

5. The device for improving the replacement efficiency of the take-up and unwinding air expansion rollers according to claim 1, characterized in that: The inner walls of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are respectively provided with mounting cavities (30) that match the second gear (25) and the third gear (26). The mounting cavity (30) is connected to the through groove (24), and the movable groove (29) is isolated from the mounting cavity (30).

6. The device for improving the replacement efficiency of take-up and unwinding air expansion rollers according to claim 1, characterized in that: The outer walls of the first arc-shaped clamping frame (7) and the second arc-shaped clamping frame (8) are fitted with ratchet (31) that is slidably connected to the outside of the support shaft (27). The outer wall of the support shaft (27) is rotatably provided with a pawl (32) that matches the ratchet (31). The pawl (32) and the support shaft (27) are connected by a torsion spring.

7. The device for improving the replacement efficiency of the take-up and unwinding air expansion rollers according to claim 6, characterized in that: The ratchet (31) has several slide bars on its outer wall. The first arc-shaped clamp (7) and the second arc-shaped clamp (8) have through holes that match the ratchet (31) on their outer walls. The outer walls of the through holes have slide grooves that match the slide bars. An elastic band (33) is provided between the outer walls of the two ratchet (31) located on the same side.

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