PVC (polyvinyl chloride) film deviation rectifying roller

Abstract

The invention relates to a PVC (polyvinyl chloride) film deviation rectifying roller which comprises a supporting roller, two ends of the supporting roller are fixedly connected with supporting discs, and the supporting discs are fixed on a rack; the rotating roller is rotationally connected to the exterior of the supporting roller through a supporting ring, a driving disc is fixedly connected to one end of the rotating roller, and the driving disc is in transmission connection to a driving mechanism; the pushing ring mechanism comprises N groups of pushing rings which are arranged on the sliding sleeve of the supporting roller in a linear array mode, and the pushing rings are pushed through a pushing rod mechanism; the floating ring mechanism comprises a floating ring, the rotating roller is sleeved with the floating ring, and the floating ring and the pushing ring are fixed to each other; the outer side of the rotating roller is sleeved with the outer rubber sleeve, and the inner wall of the outer rubber sleeve is fixed to the floating rings; according to the invention, a multi-group movable floating ring structure is designed, and the floating ring structure drives the external rubber sleeve sleeved outside to carry out local stretching and extrusion, so that the overall movement of the PVC film or the transfer of the wrinkles of the PVC film is realized.

Description

Technical Field

[0001] This invention relates to the field of PVC film processing machinery technology, specifically to a PVC film alignment roller. Background Technology

[0002] The equipment used for processing PVC (polyvinyl chloride) film in the market and according to information mainly consists of a processing unit, an unwinding unit, and a winding unit. In order to ensure the flatness of the ends of the wound PVC film during the winding process, several sets of guide rollers are usually added in the process before the roll. Multiple sets of electronic eye correction systems are used to correct the film's deviation, resulting in a large final equipment size and high cost. Moreover, the traditional correction system only achieves correction by adjusting the axial position of the film guide rollers, but it cannot correct the deviation in the middle of the PVC film, or even the local wrinkles caused by the deviation in the middle. For example, in ZL202011577679.2, although it increases the swing freedom of the guide roller shaft compared to the existing technology, and adds the adjustment of the axis angle and position to the traditional axial adjustment, although this solution increases the dimension of correction, the surface of its guide roller is still a one-piece structure, and it still cannot correct or adjust the offset or wrinkles in the middle of the PVC film. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the technical problems in the prior art and provide a PVC film correction roller.

[0004] The technical solution adopted by this invention to solve its technical problem is: A PVC film alignment roller, comprising: The support roller has support plates fixedly connected to both ends, and the support plates are fixedly connected to the frame of the PVC film wrapping machine; a sliding sleeve is fitted onto the outer wall of the middle part of the support roller. The rotating roller has support rings at both ends of the support roller along its axial direction. The rotating roller is rotatably connected to the outside of the support roller through the support rings. A drive disk is fixedly connected to one end of the rotating roller. The drive disk is driven to the drive mechanism of the PVC film wrapping machine. The push ring mechanism includes N sets of push rings arranged in a linear array on the sliding sleeve of the support roller. Each push ring includes an inner push ring that is slidably connected to the sliding sleeve. An outer push ring is coaxially sleeved on the outer ring of the inner push ring. The outer push ring and the inner push ring are slidably connected by a sliding keyway mechanism whose axis is coaxial with the inner push ring. The outer push ring and the inner push ring are axially limited by the sliding keyway mechanism. The floating ring mechanism includes N sets of floating rings arranged in a linear array on the outside of the rotating roller. The floating rings are slidably connected to the outer wall of the rotating roller. Several guide groove mechanisms are arranged in a linear array on the wall of the rotating roller. Each set of guide groove mechanisms includes several guide grooves arranged in a ring array on the wall of the rotating roller. The guide grooves penetrate the rotating roller. Several sliders that are slidably connected to the guide grooves are arranged in a ring array on the inner ring of the floating ring. The floating ring is fixedly connected to the outer push ring through the sliders. The push rod mechanism and the push ring push mechanism include N sets of push rods. The push rods are arranged in a ring array in the cavity between the support roller and the rotating roller. The front end of each push rod is movably connected to each inner push ring through a ball head structure. Each push rod pushes the inner push ring movably connected to it to move axially by moving axially along the axis of the support roller. Each inner push ring is also arranged in a ring array with a first push rod hole for the push rod to pass through. The support ring is provided with a second push rod hole for the push rod to pass through. A push rod drive mechanism includes a linear push block, which is fixedly connected to the end of a push rod. The push rod is movably connected to the push end of a linear push mechanism fixed to the outer wall of a support roller. In addition, the outer rubber sleeve has an annular support protrusion at each end of the rotating roller. The outer rubber sleeve is fixed between the two sets of support protrusions. N sets of connecting mechanisms are arranged in a linear array on the inner wall of the outer rubber sleeve. Each set of connecting mechanisms includes two connecting protrusions. The connecting protrusions are fixed to the axial ends of the outer ring of the floating ring. Among them, the surface of the support roller that supports the floating rings and the adjacent floating rings is provided with a limiting ring for supporting the outer rubber sleeve.

[0005] As a further improvement of the present invention, it also includes a push rod floating support mechanism, which includes a retaining ring fixed to the outer wall of the support roller facing the push rod driving mechanism. A first spring sleeved on the push rod is provided between the retaining ring and the support ring at one end of the support roller. A second spring sleeved on the push rod is provided between the linear push block and the retaining ring. The push rod floating support mechanism can enable each push rod to drive each floating ring back to its original position when the linear push mechanism is released.

[0006] As a further improvement of the present invention, the linear pushing mechanism includes a first pushing disk, which is rotatably connected to a support disk. A first driving ring is provided on the outer ring of the first pushing disk. The first driving ring is driven by a first adjusting motor fixed on the frame. A first extrusion ring is provided at one axial end of the first pushing disk. N / 2 sets of first pushing protrusions are arranged in a ring array on the surface of the first extrusion ring. The heights of the first pushing protrusions are arranged in an arithmetic gradient. A first contact ball is fixed at the end of the linear pushing block. The first contact ball contacts the first pushing protrusion. The pushing disk structure can drive each push rod to float sequentially by rotating itself, thereby realizing the sequential driving of the floating ring. Thus, wrinkles and stress can be transferred to both ends of the PVC film in the lateral direction by sequential traction and extrusion of the PVC film.

[0007] As a further improvement of the present invention, the linear pushing mechanism further includes a second pushing disk, the inner ring of which is rotatably connected to the outer ring of the first pushing disk; a second driving ring is provided on the outer ring of the second pushing disk, the second driving ring is driven by a second adjusting motor fixed on the frame, a second extrusion ring is provided at one axial end of the second pushing disk, and N / 2 sets of second pushing protrusions are arranged in a ring array on the surface of the second extrusion ring, the heights of the second pushing protrusions are arranged in an arithmetic gradient, a second contact ball is fixed on the end sidewall of the linear pushing block, the second extrusion ring extends to the arrangement position of the second contact ball, and the second pushing protrusion contacts the second contact ball; the second pushing disk can operate asynchronously with the first pushing disk, which can realize the synchronous traction and adjustment of multiple transverse folds of PVC film, thereby improving the processing efficiency of folds.

[0008] As a further improvement of the present invention, the linear push mechanism includes N sets of linear push motors fixed in a ring array to the support plate. The end of the linear push rod of the linear push motor is provided with a push ball block, and the push ball block contacts the end of the linear push block. The linear push motor can realize differentiated movement of each push rod, making the movement of the floating ring more precise and timely.

[0009] As a further improvement of the present invention, a limiting protrusion is provided in the axial center of the inner ring of the outer pushing ring. The inner pushing ring includes clamping rings that are combined with each other and are fixedly connected by bolts. A sliding groove for embedding the limiting protrusion is provided between the inner edges of the clamping rings. The limiting protrusion and the sliding groove form a sliding keyway mechanism. A sliding bushing for sliding contact with the sliding sleeve is arranged in the inner ring of the inner pushing ring. An annular clamping protrusion is provided on the outer ring of the sliding bushing. A clamping groove is provided between the outer edges of the clamping rings, and the clamping protrusion is fixed in the clamping groove. The inner pushing ring adopts a split structure, which allows the outer pushing ring and the sliding bushing to be easily separated from the inner pushing ring by disassembling the inner pushing ring, greatly facilitating maintenance.

[0010] As a further improvement of the present invention, at least two sets of fixing bolts are fixed through the floating ring, and the floating ring, the slider, and the outer push ring are fixedly connected by fixing bolts; the bolt fixing, disassembly and installation are more convenient.

[0011] As a further improvement of the present invention, an annular first clamping groove is provided on the outer ring of the supporting protrusion, and a second clamping groove is provided at each of the two axial ends of each floating ring. A fixing protrusion is integrally arranged on the inner wall of each of the two axial ends of the outer rubber sleeve, and the fixing protrusion is embedded in the first clamping groove; the connecting protrusion is embedded in the second clamping groove; the outer rubber sleeve is fixed by the interlocking structure of the groove and the protrusion, which makes it easy to disassemble and fix the outer rubber sleeve, and does not require additional bolts through the outer rubber sleeve, thus increasing the flatness of the surface of the outer rubber sleeve.

[0012] As a further improvement of the present invention, the outer wall surface of the outer sleeve is provided with a friction part corresponding to the position between the connecting protrusions, and the outer sleeve surface of the friction part is densely covered with granular protrusions; the granular protrusions can bring extrusion marks to the surface of the PVC film and at the same time increase the friction between the PVC film to a certain extent, so as to ensure the pushing efficiency of the PVC film.

[0013] The beneficial effects of this invention are: This invention designs a structure consisting of multiple movable floating rings. These floating rings drive an external rubber sleeve to undergo localized stretching and compression. During stretching, the friction on the sleeve's surface allows for localized axial traction of wrinkled or stress-uneven PVC film. Simultaneously, the coordinated movement of the other floating rings distributes larger wrinkles in the PVC film into smaller wrinkles caused by minor compression from the external rubber sleeve, or distributes stress to minor protrusions created by the minor compression of the external rubber sleeve. Ultimately, these minor wrinkles can be eliminated by the remaining guide rollers of the PVC film winding equipment through stretching, or the wrinkles or stress can be transferred to both ends of the PVC film through localized traction deformation of the external rubber sleeve for final release. This solves the technical problem of adjusting central wrinkles or stress concentration, which is impossible with traditional PVC film winding equipment. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 This is a structural schematic diagram of Example 2; Figure 3 This is a schematic diagram of the structure of the first drive plate; Figure 4 This is a schematic diagram of the second drive plate; Figure 5 This is a schematic diagram of process 1; Figure 6 This is a schematic diagram of process 2; Figure 7 This is a schematic diagram of process 3; In the diagram: 1. Support roller; 2. Rotating roller; 3. Support disc; 4. Outer push ring; 5. Limiting protrusion; 6. Clamping ring; 7. Sliding bushing; 8. Clamping protrusion; 9. First push rod hole; 10. Slider; 11. Guide groove; 12. Push ring; 13. Second clamping groove; 14. Connecting protrusion; 15. Friction part; 16. Outer rubber sleeve; 17. Supporting protrusion; 18. First clamping groove; 19. Drive disc; 20. Limiting ring; 21. Ball head structure; 22. Push rod; 23. 24. Support ring; 25. Retaining ring; 26. Linear push block; 27. First spring; 28. Second spring; 29. ​​First push ring; 30. First drive ring; 31. First push protrusion; 32. First contact ball block; 33. Second drive ring; 34. Second compression ring; 35. Second push protrusion; 36. Second contact ball block; 37. Linear push motor; 38. Linear push rod; 39. Push ball block; 40. Pleated portion; 41. Outer rubber sleeve protrusion; 42. PVC film. Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention. Example

[0017] like Figure 1 A PVC film alignment roller, comprising: The support roller is located at the center of the structure. The two ends of the support roller are fixedly connected to the support plate through the flange structure. The support plate is fixedly connected to the frame of the PVC film wrapping machine through the flange structure. A brass sliding sleeve is sleeved on the outer wall of the middle part of the support roller. Two limit sleeves are also sleeved at both ends of the support roller through interference fit. The sliding sleeve is fixed to the surface of the support roller through the limit sleeves. The rotating roller has support rings at both ends of the support roller. The rotating roller is rotatably connected to the outside of the support roller through the bearings on the outer ring of the support ring. A drive disk is fixedly connected to one end of the rotating roller. The drive disk is driven by the drive mechanism of the PVC film wrapping machine. The drive disk drives the rotating roller to rotate under the drive of the drive motor. like Figure 1 The mechanism includes N sets of pushing rings arranged in a linear array on the sliding sleeve of the support roller. Each pushing ring includes an inner pushing ring slidably connected to the sliding sleeve. An outer pushing ring is coaxially sleeved on the outer ring of the inner pushing ring. The outer pushing ring and the inner pushing ring are slidably connected by a sliding keyway mechanism with their axes coaxial with the inner pushing ring. The outer pushing ring and the inner pushing ring are axially limited by the sliding keyway mechanism. A limiting protrusion is provided in the axial center of the inner ring of the outer pushing ring. The inner pushing ring includes clamping rings that are combined with each other and are fixedly connected by bolts. A sliding groove for embedding the limiting protrusion is provided between the inner edges of the clamping rings. The limiting protrusion and the sliding groove constitute the sliding keyway mechanism. A sliding bushing for sliding contact with the sliding sleeve is arranged on the inner ring of the inner pushing ring. An annular clamping protrusion is provided on the outer ring of the sliding bushing. A clamping groove is provided between the outer edges of the clamping rings, and the clamping protrusion is fixed in the clamping groove. like Figure 1 The floating ring mechanism includes N sets of floating rings arranged in a linear array on the outside of the rotating roller. The floating rings are slidably connected to the outer wall of the rotating roller. Several guide groove mechanisms are arranged in a linear array on the wall of the rotating roller. Each set of guide groove mechanisms includes several guide grooves arranged in a ring array on the wall of the rotating roller. The guide grooves penetrate the rotating roller. Several sliders are arranged in a ring array on the inner ring of the floating ring and are slidably connected to the guide grooves. The floating ring is fixedly connected to the outer push ring through the sliders. At least two sets of fixing bolts are fixedly fixed through the floating ring. The floating ring, sliders, and outer push ring are fixedly connected through the fixing bolts. like Figure 1 The push rod mechanism and the push ring pushing mechanism include N sets of push rods. The push rods are arranged in a ring array in the cavity between the support roller and the rotating roller. The front end of each push rod is movably connected to each inner push ring through a ball head structure. Each push rod moves axially along the axis of the support roller, pushing the inner push ring connected to it to move axially. Each inner push ring is also arranged in a ring array with a first push rod hole for passing through the push rod. The support ring is provided with a second push rod hole for passing through the push rod. A push rod floating support mechanism is provided on the limiting sleeve at one end of the support roller. The push rod floating support mechanism includes a retaining ring fixed to the outer wall of the support roller facing the push rod driving mechanism. A first spring is provided between the retaining ring and the support ring at one end of the support roller and is sleeved on the push rod. A second spring is provided between the linear push block and the retaining ring and is sleeved on the push rod. like Figure 1 , Figure 2 and Figure 3 A push rod drive mechanism includes a linear push block, which is fixedly connected to the end of a push rod. The end of the push rod is pushed by the linear push mechanism. For example... Figure 1 and Figure 2 The linear push mechanism includes a first push disk rotatably connected to a support disk. A first drive ring is arranged around the outer ring of the first push disk, driven by a first adjusting motor fixed to the frame. A first compression ring is located at one axial end of the first push disk. N / 2 groups of first push protrusions are arranged in a ring array on the surface of the first compression ring, with their heights arranged in an arithmetic gradient. A first contact ball is fixed at the end of the linear push block, contacting the first push protrusions. Figure 1 and Figure 3 The linear push mechanism also includes a second push disk, the inner ring of which is rotatably connected to the outer ring of the first push disk; a second drive ring is provided on the outer ring of the second push disk, which is driven by a second adjusting motor fixed on the frame; a second extrusion ring is provided at one axial end of the second push disk; N / 2 sets of second push protrusions are arranged in annular array on the surface of the second extrusion ring, and the heights of the second push protrusions are arranged in an arithmetic gradient; a second contact ball is fixed on the end side wall of the linear push block; the second extrusion ring extends to the position of the second contact ball, and the second push protrusion contacts the second contact ball; Furthermore, the outer rubber sleeve has an annular support protrusion at each end of the rotating roller. One set of support protrusions is integral with the rotating roller, while the other set is fixed to the surface of the rotating roller by bolts. The outer rubber sleeve is fixed between the two sets of support protrusions. An annular first clamping groove is provided on the outer ring of the support protrusion. A fixing protrusion is integrally arranged on the inner wall of each of the two axial ends of the outer rubber sleeve, and the fixing protrusion is embedded in the first clamping groove. N sets of connecting mechanisms are arranged in a linear array on the inner wall of the outer rubber sleeve corresponding to the positions between the fixing protrusions. Each set of connecting mechanisms includes two connecting protrusions. A second clamping groove is provided at each of the two axial ends of each floating ring. The connecting protrusion is embedded in the second clamping groove to fix it to the floating ring. The outer wall of the outer rubber sleeve is provided with a friction part corresponding to the positions between the connecting protrusions. The outer rubber sleeve surface of the friction part is densely covered with granular protrusions. Among them, the surface of the support roller that supports the floating rings and the adjacent floating rings is provided with a limiting ring for supporting the outer rubber sleeve.

[0018] When N / 2 is not an integer, the decimal part is rounded to the nearest integer.

[0019] For specific usage, please refer to... Figure 1 as well as Figure 5-7 The PVC film is wound around the outer sleeve of the rotating roller at a certain winding angle. In the default state, the main drive motor will drive the drive disk to rotate through the belt drive mechanism. When the drive disk rotates, it will drive the rotating roller to rotate synchronously. When the rotating roller rotates, the inner and outer push rings of the push ring mechanism will slide around the shaft through the sliding keyway mechanism. At this point, the PVC film may develop some wrinkles due to the next process step or the misalignment of the guide rollers, such as... Figure 5-7If the wrinkled portion continues to be rolled and wound, it will eventually form wrinkles and defects on some parts of the PVC film due to the compression caused by the overlapping of the winding, affecting the final product quality of the PVC film. Therefore, at this time, the first and second adjusting motors can be used to drive the first and second pushing disks to rotate respectively. When the first and second pushing disks rotate in sequence, taking the first pushing disk as an example, the first pushing protrusion at the front end of the center of the first pushing disk will squeeze the first contact ball block, and the first contact ball block will push the corresponding push rod to move axially. The front end of the corresponding push rod will push the inner pushing ring of the corresponding pushing ring mechanism relative to the ball head structure. The sliding bushing moves axially, and the inner pushing ring drives the corresponding outer pushing ring to move through the sliding keyway mechanism. The outer pushing ring, in turn, drives the corresponding floating ring to move through the sliding of the slider in the wire groove. Because the first pushing protrusions at the front end of the entire first pushing disk are arranged in an arithmetic gradient, each floating ring will move sequentially along one end of the axial direction of the rotating roller according to a certain order and the rotation direction of the first pushing disk. During this sequential movement, the spacing between adjacent floating rings and the moving distance of the floating rings will change with the height of the first pushing protrusion in contact with the push rod. At this time, the outer rubber sleeve protrusion caused by the opposing movement between adjacent floating rings will also... As the floating rings move, they move axially from one end of the outer rubber sleeve to the other. By default, the smaller the gap between the floating rings, the larger the protrusion of the outer rubber sleeve between the floating rings. The floating ring corresponding to the push rod that is not in contact with the first push protrusion will not float, so the gap between this push ring and its adjacent floating ring will increase. The outer rubber sleeve at this position will be pulled. Overall, the protruding part and the pulling part of the outer rubber sleeve will continuously occur in a wave-like pattern on the surface of the support roller as the first or second push disc rotates. The largest protrusion of the outer rubber sleeve will also occur adjacent to the floating ring connected to the longest first push protrusion. The bulge on one side and the pull of the outer sleeve on the other side will also be generated by the connecting ears of the other floating rings and the corresponding first push bulge. In summary, when the wrinkle is located between two floating rings, the wrinkle can be pulled by increasing the spacing between the floating rings, making the wrinkle flat. The deformation caused by the wrinkle pulling can be compensated by reducing the spacing of the outer floating rings. That is to say, the wrinkle can be transferred by the continuous deformation of the outer sleeve. After repeating the process, the wrinkle can be transferred to both ends of the rotating roller by the continuous pulling and bulging of the outer sleeve, and finally the wrinkle in the middle of the PVC film is eliminated.When there are many wrinkles, or when there are wrinkles at both ends of the PVC film, in order to prevent one or more large wrinkles from moving towards one end and causing the PVC film to shift or deform excessively, the first and second push disks can be driven simultaneously to generate two sets of maximum protrusions on the outer sleeves. The first and second push disks can be driven in opposite directions, and the rotation direction and rotation angle of the first and second push disks can be adjusted to achieve opposite movement of the two sets of maximum protrusions. This will decompose the wrinkles into two smaller wrinkles with opposite transmission directions, which will move towards both ends of the rotating roller. Then, the guide roller at the rear end or the axially moving correction roller can be adjusted to ensure the flatness of the PVC film and the accuracy of the winding. Example

[0020] In this embodiment, the push rod drive mechanism is driven by several linear drive motors, specifically, as follows: Figure 2 , Figure 5-7 The linear drive mechanism includes N sets of linear drive motors fixed in a ring array to the support plate. The end of the linear drive rod of the linear drive motor is provided with a push ball block, and the push ball block contacts the end of the linear drive block. like Figure 5 If the PVC film wrinkles, a partial linear drive motor can be used to move a local floating ring, pulling the outer sleeve at the wrinkled location, or the wrinkles can be... Figure 5 When positioned at the floating ring location, the floating rings on either side of the corresponding floating ring can be moved in opposite directions to stretch and transform the wrinkles at that location into something like... Figure 6 The external sleeve protrusion shown is caused by one of the adjacent floating rings moving due to tension, while the other floating ring remains stationary. The distance between the two sets decreases, causing the external sleeve between the two sets of floating rings to be compressed and bulge outwards. This process is then repeated, driving the floating ring on the side of the fold to move again, moving the fold from the corresponding external sleeve protrusion to the external sleeve protrusion between the adjacent floating ring and the support protrusion. During the fold movement, the local stress in the PVC film is also released, so... Figure 7The wrinkles gradually decrease as they are transmitted towards the lateral sides of the PVC film, i.e., the axial ends of the rotating roller. Finally, they are released through the lateral ends of the PVC film. Because the surface compressive stress between the PVC film and the lateral ends of the rotating roller is relatively small, the friction is also small. Therefore, the surface of the PVC film will slide against the outer sleeves at both ends of the rotating roller, thus releasing the wrinkles. At the same time, all the floating rings can be pushed towards one end, causing the PVC film to move as a whole towards the axial end of the rotating roller, achieving fine adjustment of the PVC film offset. The friction part set on the surface of the outer sleeve can further ensure the friction between the PVC film and the surface of the outer sleeve, ensuring that the movement of the floating rings at the corresponding positions can stably drive the movement of the local PVC film, ensuring overall efficiency, and preventing movement failure due to insufficient friction.

[0021] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A PVC film alignment roller, characterized in that, include: Support rollers, with support plates fixedly connected to both ends of the support rollers, and the support plates fixedly connected to the frame of the PVC film wrapping machine; A sliding sleeve is fitted onto the outer wall of the middle part of the support roller; The rotating roller has support rings at both ends of the support roller along its axial direction. The rotating roller is rotatably connected to the outside of the support roller through the support rings. A drive disk is fixedly connected to one end of the rotating roller. The drive disk is driven to the drive mechanism of the PVC film wrapping machine. The push ring mechanism includes N sets of push rings arranged in a linear array on the sliding sleeve of the support roller. Each push ring includes an inner push ring that is slidably connected to the sliding sleeve. An outer push ring is coaxially sleeved on the outer ring of the inner push ring. The outer push ring and the inner push ring are slidably connected by a sliding keyway mechanism whose axis is coaxial with the inner push ring. The outer push ring and the inner push ring are axially limited by the sliding keyway mechanism. The floating ring mechanism includes N sets of floating rings arranged in a linear array on the outside of the rotating roller. The floating rings are slidably connected to the outer wall of the rotating roller. Several guide groove mechanisms are arranged in a linear array on the wall of the rotating roller. Each set of guide groove mechanisms includes several guide grooves arranged in a ring array on the wall of the rotating roller. The guide grooves penetrate the rotating roller. Several sliders that are slidably connected to the guide grooves are arranged in a ring array on the inner ring of the floating ring. The floating ring is fixedly connected to the outer push ring through the sliders. The push rod mechanism and the push ring push mechanism include N sets of push rods. The push rods are arranged in a ring array in the cavity between the support roller and the rotating roller. The front end of each push rod is movably connected to each inner push ring through a ball head structure. Each push rod pushes the inner push ring movably connected to it to move axially by moving axially along the axis of the support roller. Each inner push ring is also arranged in a ring array with a first push rod hole for the push rod to pass through. The support ring is provided with a second push rod hole for the push rod to pass through. A push rod drive mechanism includes a linear push block, which is fixedly connected to the end of a push rod. The push rod is movably connected to the push end of a linear push mechanism fixed to the outer wall of a support roller. In addition, the outer rubber sleeve has an annular support protrusion at each end of the rotating roller. The outer rubber sleeve is fixed between the two sets of support protrusions. N sets of connecting mechanisms are arranged in a linear array on the inner wall of the outer rubber sleeve. Each set of connecting mechanisms includes two connecting protrusions. The connecting protrusions are fixed to the axial ends of the outer ring of the floating ring. Among them, the surface of the support roller that supports the floating rings and the adjacent floating rings is provided with a limiting ring for supporting the outer rubber sleeve.

2. The PVC film alignment roller as described in claim 1, characterized in that: It also includes a push rod floating support mechanism, which includes a retaining ring fixed to the outer wall of the support roller facing the push rod drive mechanism, a first spring sleeved on the push rod between the retaining ring and the support ring at one end of the support roller, and a second spring sleeved on the push rod between the linear push block and the retaining ring.

3. A PVC film alignment roller as described in claim 2, characterized in that: The linear pushing mechanism includes a first pushing disk, which is rotatably connected to a support disk. A first driving ring is provided on the outer ring of the first pushing disk. The first driving ring is driven by a first adjusting motor fixed on the frame. A first extrusion ring is provided at one axial end of the first pushing disk. N / 2 sets of first pushing protrusions are arranged in a ring array on the surface of the first extrusion ring. The heights of the first pushing protrusions are arranged in an arithmetic gradient. A first contact ball is fixed at the end of the linear pushing block. The first contact ball contacts the first pushing protrusion.

4. A PVC film alignment roller as described in claim 3, characterized in that: The linear pushing mechanism further includes a second pushing disk, the inner ring of which is rotatably connected to the outer ring of the first pushing disk; a second driving ring is provided on the outer ring of the second pushing disk, the second driving ring is driven by a second adjusting motor fixed on the frame, a second extrusion ring is provided at one axial end of the second pushing disk, and N / 2 sets of second pushing protrusions are arranged in a ring array on the surface of the second extrusion ring, the heights of the second pushing protrusions are arranged in an arithmetic gradient, a second contact ball is fixed on the end side wall of the linear pushing block, the second extrusion ring extends to the arrangement position of the second contact ball, and the second pushing protrusion contacts the second contact ball.

5. A PVC film alignment roller as described in claim 2, characterized in that: The linear drive mechanism includes N sets of linear drive motors fixed in a ring array to the support plate. The end of the linear drive rod of the linear drive motor is provided with a push ball block, and the push ball block contacts the end of the linear drive block.

6. A PVC film alignment roller as described in claim 1, characterized in that: The inner ring of the outer pushing ring has a limiting protrusion at its axial center. The inner pushing ring includes clamping rings that are assembled together and are fixedly connected by bolts. A sliding groove for embedding the limiting protrusion is provided between the inner edges of the clamping rings. The limiting protrusion and the sliding groove form a sliding keyway mechanism. A sliding bushing for sliding contact with the sliding sleeve is arranged on the inner ring of the inner pushing ring. An annular clamping protrusion is provided on the outer ring of the sliding bushing. A clamping groove is provided between the outer edges of the clamping rings, and the clamping protrusion is fixed in the clamping groove.

7. A PVC film alignment roller as described in claim 1, characterized in that: in At least two sets of fixing bolts are fixed through the floating ring, and the floating ring, the slider, and the outer push ring are fixedly connected by the fixing bolts.

8. A PVC film alignment roller as described in claim 1, characterized in that: The outer ring of the support protrusion is provided with a first annular clamping groove, and a second clamping groove is provided at both ends of the axial direction of each floating ring. A fixing protrusion is integrally arranged on the inner wall of both ends of the outer rubber sleeve, and the fixing protrusion is embedded in the first clamping groove; the connecting protrusion is embedded in the second clamping groove.

9. A PVC film alignment roller as described in claim 1, characterized in that: The outer wall of the outer rubber sleeve is provided with a friction part corresponding to the position between the connecting protrusions, and the surface of the outer rubber sleeve of the friction part is densely covered with granular protrusions.

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