Rewinding mechanism of rewinding machine and rewinding machine

Abstract

The present application relates to a rewinding mechanism and a rewinding machine, and relates to the field of rewinding machines. The rewinding mechanism includes a frame, two pressure plates, two drive plates, a drive assembly, and a rotating assembly. The two pressure plates are coaxially arranged, and the pressure plates have a conical surface that abuts against the inner edge of the end face of a paper tube. The end face of the pressure plate is fixed with a plurality of springs evenly arranged around the circumference, and the free end of the spring is provided with an embedded tooth. The outer circumferential surface of the drive plate is fixed with a protrusion, and the protrusion is located between two adjacent springs. The drive plate is coaxially fixed with a drive rod, and the drive rod slides axially with the pressure plate and is locked in rotation. The drive assembly has two stages of drive. When the drive assembly is driven in one stage, it will drive the pressure plate toward the other pressure plate. When the drive assembly is driven in the second stage, it will drive the drive rod and the drive plate to move axially. The outer edge of the end face of the drive plate abuts against the spring to force the spring to deform elastically, so that the embedded tooth is embedded in the inner wall of the paper tube. The rotating assembly is used to drive the pressure plate to rotate. The present application can improve the winding stability.

Description

Technical Field

[0001] The present application relates to the field of rewinding machines, and in particular to a rewinding mechanism and a rewinding machine. Background Art

[0002] The existing rewinding mechanisms of rewinding machines include air shaft type and pressure plate type. The air shaft type is detachably connected to the frame, and the air shaft passes through the paper tube. The air shaft is fixed to the paper tube after ventilation. The air shaft has strong support and positioning properties for the paper tube, and is suitable for rewinding large amounts of finished paper. However, the process of removing the finished paper from the air shaft is relatively cumbersome, affecting production efficiency.

[0003] The pressure plate type winding mechanism includes two support arms and two pressure plates. The pressure plate has a conical surface that abuts against the inner edge of the end face of the paper tube. The pressure plate is installed on the support arm. The support arm can drive the pressure plate to move so that the two pressure plates can clamp the paper tube or release the clamping of the paper tube. The advantage is that the displacement of the pressure plate can be mechanically controlled, and the positioning and release of the paper tube can be completed quickly, which is convenient for loading and unloading and has high production efficiency.

[0004] However, when the pressure plate is equipped with a driving source, the driving source can realize the tension control of the winding and improve the rewinding effect. The torque of the driving source is mainly transmitted through the abutting friction between the conical surface of the pressure plate and the inner edge of the end face of the paper tube. The abutting friction is mainly positively correlated with the clamping pressure and clamping area of ​​the pressure plate. The clamping area of ​​the paper tube is very small. Therefore, the greater the clamping pressure, the greater the upper limit of the torque of the paper tube. Especially for the rewinding of larger mass finished paper, the torque output to the paper tube needs to be greater, and the corresponding clamping pressure is also greater. However, large clamping pressure can easily cause the end face of the paper tube to be compressed and deformed, thereby affecting the winding state of the rewound paper on the paper tube and also causing a decrease in appearance. Summary of the Invention

[0005] In order to improve the stability of rolling up large-mass finished paper, the present application provides a rewinding mechanism and a rewinding machine.

[0006] The present application provides a rewinding mechanism for a rewinding machine, which adopts the following technical solution:

[0007] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0008] By adopting the above technical solution, during the rewinding operation, the paper tube is first placed between the two pressure plates, and the driving component performs a first-stage driving to drive the pressure plate to move toward the other pressure plate. The conical surfaces of the two pressure plates simultaneously abut against the inner edges of the end faces of the paper tube to achieve the positioning and preliminary clamping and fixation of the paper tube to ensure the coaxiality of the paper tube and the rotation axis of the pressure plate. Then the driving component performs a second-stage driving to drive the driving rod and the driving plate to move axially. The outer edge of the end face of the driving plate abuts against the spring to force the spring to elastically deform radially outward along the paper tube, so that the embedded teeth of the spring are embedded in the inner wall of the paper tube to achieve the fixation of the spring and the paper tube, thereby achieving the final clamping and fixation. Then the paper is wrapped around the outside of the paper tube, and the rotating component is used to drive the pressure plate to rotate. The torque of the pressure plate is transmitted to the paper tube through the spring and the embedded teeth, thereby driving the paper tube to rotate to complete the rewinding.

[0009] After the rewinding is completed, the rotating assembly stops the rotation of the pressure plate, and the driving assembly first retracts the driving rod and the driving plate. The driving plate releases the contact with the spring sheet, and the spring sheet recovers its deformation, so that the embedded teeth are separated from the inner wall of the paper tube. The driving assembly then drives the driving plate and the pressure plate to move away from the paper tube to release the positioning and clamping of the paper tube for easy unloading.

[0010] In summary, by setting up a drive disk, a drive assembly and a spring sheet, and utilizing the two-stage drive of the drive assembly, not only can the positioning and preliminary clamping and fixing of the paper tube be achieved, but the spring sheet can also be forced to elastically deform radially outward along the paper tube, so that the embedding teeth of the spring sheet are embedded in the inner wall of the paper tube to achieve the fixation of the spring sheet and the paper tube. By embedding, the fixing strength of the paper tube is improved, thereby improving the torque transmission effect of the pressure plate, and thus improving the stability of the winding of large-mass finished paper, while also reducing the degree of structural deformation of the paper tube and ensuring the winding state of the finished paper; and by setting the protrusion, the protrusion limits the spring sheet circumferentially, and the torque of the pressure plate can be transmitted to the paper tube through the spring sheet, and the torque of the pressure plate can also be transmitted to the spring sheet and the paper tube through the drive rod, the drive disk and the protrusion in turn, thereby greatly improving the torque transmission effect of the spring sheet, and thus improving the stability of the winding of large-mass finished paper.

[0011] Optionally, a supporting assembly is further included, which includes two movable seats, which slide and cooperate with the frame in a direction close to or away from the other movable seat. The movable seat is fixed with multiple triangular plates arranged side by side at intervals. The triangular plates of the two movable seats are staggered, and the inclined surfaces of the triangular plates are set as supporting surfaces.

[0012] By adopting the above technical solution, when placing the paper tube, the two movable seats move toward each other, and the supporting surfaces of the triangular plates of the two movable seats jointly support the outer peripheral surface of the paper tube to ensure that the axis of the paper tube is at a certain height position, that is, the axis of the paper tube is approximately coincident with the axis of the pressure plate, and then the pressure plate positions and clamps the paper tube. After positioning and clamping, the two movable seats move away from each other, so that the supporting surfaces of the triangular plates are separated from the outer peripheral surface of the paper tube, so as to avoid an increase in friction when the paper tube is subsequently rotated.

[0013] After rewinding is completed, the two moving seats move toward each other, and the supporting surfaces of the triangular plates of the two moving seats jointly support the outer circumference of the paper tube to reduce the interference of the weight of the paper tube on the retraction of the pressure plate and the spring piece, that is, the pressure plate and the spring piece can smoothly retract and separate from the paper tube, and then the two moving seats move away from each other, so that the supporting surface of the triangular plate is separated from the outer circumference of the paper tube, and the paper tube loses support. Under the action of gravity, the paper tube can fall to the collection area, which improves the unloading efficiency.

[0014] Optionally, the driving assembly includes a driving cylinder and a compression spring, the driving cylinder is mounted on the frame, the end of the driving rod is coaxially rotated with the end of the telescopic rod of the driving cylinder, the pressure plate is coaxially fixed with a driving cylinder, the rotating assembly is used to drive the driving cylinder to rotate, the driving rod is fixed with a first plate, the driving cylinder is fixed with a second plate, the second plate blocks the path of the first plate moving away from the pressure plate, and the compression spring is used to force the pressure plate to move relative to the driving rod in a direction toward the other pressure plate.

[0015] By adopting the above technical solution, when the driving cylinder performs a first-stage driving, the telescopic rod of the driving cylinder drives the driving rod forward a certain distance, and the forward force of the driving rod is applied to the driving cylinder and the pressure plate through the compression spring to drive the pressure plate forward, and the conical surfaces of the two pressure plates simultaneously abut the inner edges of the end faces of the paper tube, and at the same time the compression spring is elastically compressed, and the elastic force of the compression spring is applied to the pressure plate to increase the clamping force of the pressure plate on the paper tube; when the driving cylinder performs a second-stage driving, the telescopic rod of the driving cylinder drives the driving rod forward another distance. At this time, the pressure plate cannot continue to move axially due to the limitation of the paper tube, and the driving rod advances a certain distance relative to the pressure plate, so that the outer edge of the end face of the driving plate abuts against the spring sheet, forcing the spring sheet to elastically deform radially outward along the paper tube, so that the embedded teeth of the spring sheet are embedded in the inner wall of the paper tube, so as to achieve the fixation of the spring sheet and the paper tube, thereby achieving the final clamping fixation.

[0016] After the rewinding is completed, the rotating assembly stops the rotation of the pressure plate, and the driving cylinder first retracts the driving rod and the driving plate. The driving plate releases the contact with the spring sheet, and the spring sheet recovers its deformation, so that the embedded teeth are separated from the inner wall of the paper tube. The driving cylinder then drives the driving rod and the driving plate to retract a distance. Since the first plate body that moves with the driving rod abuts against the second plate body, it drives the second plate body, the driving cylinder and the pressure plate to retract, thereby releasing the positioning and clamping of the paper tube.

[0017] Optionally, the spring clip includes a fixed section, a first curved section, a first inclined section and a second inclined section that are integrally formed and connected in sequence. The fixed section is fixedly connected to the end face of the pressure plate. The shortest distance between the two symmetrical first inclined sections gradually decreases along the axial direction away from the pressure plate, and the shortest distance between the two symmetrical second inclined sections gradually increases along the axial direction away from the pressure plate. The end of the second inclined section is bent to form the embedded tooth; the inclined surface of the first inclined section is used for abutment against the outer edge of the end face of the drive plate, and the protrusion is located in the circumferential gap between the first inclined sections of the two adjacent spring clips.

[0018] By adopting the above technical solution, when the driving cylinder performs the second-stage driving, the telescopic rod of the driving cylinder drives the driving rod to move forward a distance, and the outer edge of the end surface of the driving disk abuts the inclined surface of the first inclined section of the spring piece, so as to force the spring pieces of the first inclined section and the second inclined section to elastically deform radially outward along the paper tube, so that the embedding teeth of the spring piece are embedded in the inner wall of the paper tube, so as to achieve the fixation of the spring piece and the paper tube, thereby achieving the final clamping fixation.

[0019] Optionally, a cylindrical convex rod is fixed to the convex block, and the first inclined section blocks the moving path of the convex rod as it retreats with the driving rod.

[0020] By adopting the above technical solution, when the driving cylinder drives the driving rod and the driving disk to retract, the driving disk releases the contact with the spring sheet, and the spring sheet recovers its deformation, so that the embedded tooth disengages from the inner wall of the paper tube. At the same time, the protruding rod retracts with the driving disk, and the protruding rod abuts against the first inclined section to drive the first inclined section to move radially inward along the paper tube, that is, to accelerate the resetting of the first inclined section, thereby improving the speed and stability of the embedded tooth disengaging from the paper tube.

[0021] Optionally, the spring piece includes a fixed section, a second curved section, a third inclined section, a third curved section, a fourth inclined section, and a horizontal section that are integrally connected in sequence. The fixed section is fixedly connected to the end face of the pressure plate, and the shortest distance between the two symmetrical third inclined sections gradually decreases axially away from the pressure plate. The inclined surface of the third inclined section is used for abutting the outer edge of the end face of the driving plate, and the fourth inclined section is parallel to the third inclined section. The end of the horizontal section is bent to form the embedded tooth; the protrusion is located in the circumferential gap between the third inclined sections of two adjacent spring pieces; the protrusion is fixed with a cylindrical protrusion rod, and the third inclined section blocks the moving path of the protrusion rod as the driving rod retreats, and the fourth inclined section blocks the moving path of the protrusion rod as the driving rod pushes forward.

[0022] By adopting the above technical solution, when the driving cylinder performs the second-stage driving, the telescopic rod of the driving cylinder drives the driving rod to move forward a certain distance, and the outer edge of the end face of the driving disk abuts against the inclined surface of the third inclined section of the spring piece, so as to force the third inclined section, the fourth inclined section and the horizontal section to elastically deform outward along the radial direction of the paper tube. At the same time, the protruding rod of the driving disk also abuts against the fourth inclined section of the spring piece, so as to force the fourth inclined section and the horizontal section to elastically deform outward along the radial direction of the paper tube. That is, the moving path of the horizontal section and the embedded tooth is affected by the driving in two inclined directions. The two driving moving paths are superimposed, so that the moving path direction of the embedded tooth is close to the radial direction of the paper tube, so as to increase the embedding depth and embedding stability of the embedded tooth, thereby improving the torque transmission effect.

[0023] Optionally, a slide cylinder is fixed to the frame, and the slide cylinder is coaxially arranged with the driving cylinder. An annular groove is provided on the end surface of the driving cylinder away from the pressure plate. The slide cylinder and the annular groove are axially slidingly matched, and the slide cylinder and the annular groove are rotationally matched.

[0024] Optionally, the rotating assembly includes a motor fixed to the frame, the output shaft of the motor is fixed with a first gear, a second gear is coaxially sleeved and fixed on the outside of the driving cylinder, the second gear is engaged with the first gear, and the axial length of the second gear is greater than or equal to the axial displacement stroke of the driving cylinder.

[0025] By adopting the above technical solution, it is ensured that when the driving cylinder moves axially with the driving assembly, the second gear remains in meshing state with the first gear, so as to facilitate stable transmission of the torque of the motor.

[0026] The present application provides a rewinding machine, which adopts the following technical solution:

[0027] A rewinding machine comprises a rewinding mechanism.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] By providing a driving disk, a driving assembly and a spring sheet, and utilizing the two-stage drive of the driving assembly, not only can the positioning and preliminary clamping and fixing of the paper roll be achieved, but the spring sheet can also be forced to elastically deform radially outward along the paper roll, so that the embedding teeth of the spring sheet are embedded in the inner wall of the paper roll to achieve the fixation of the spring sheet and the paper roll. By embedding, the fixing strength of the paper roll is improved, thereby improving the torque transmission effect of the pressure plate, and thus improving the stability of the winding of large-mass finished paper. Moreover, by providing the protrusion, the protrusion limits the circumferential position of the spring sheet, and the torque of the pressure plate can be transmitted to the paper roll through the spring sheet, and the torque of the pressure plate can also be transmitted to the spring sheet and the paper roll in turn through the driving rod, the driving disk and the protrusion, thereby greatly improving the torque transmission effect of the spring sheet, thereby improving the stability of the winding of large-mass finished paper, and at the same time reducing the structural deformation of the paper roll and ensuring the winding state of the finished paper.

[0030] Through the abutment of the outer edge of the end face of the driving disk and the abutment of the protruding rod of the driving disk, the movement path of the horizontal section and the embedded tooth is affected by the driving in two inclined directions. The two driving movement paths are superimposed, so that the movement path direction of the embedded tooth is close to the radial direction of the paper tube, so as to increase the embedding depth and embedding stability of the embedded tooth, thereby improving the torque transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of Example 1.

[0032] Figure 2 This is a schematic diagram of the supporting assembly of Example 1.

[0033] Figure 3 It is a cross-sectional view of the overall structure of Example 1.

[0034] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0035] Figure 5 It is a partial cross-sectional view of Example 1 for showing the positional relationship between the drive disk and the spring.

[0036] Figure 6 Schematic diagram of the pressure plate of Example 1.

[0037] Figure 7 It is a schematic diagram of the pressure plate and the driving plate of Example 1.

[0038] Figure 8 This is a schematic diagram of the change in Example 1 for illustrating the elastic deformation process of the spring.

[0039] Figure 9 It is a partial cross-sectional view of Example 2 for showing the positional relationship between the drive disk and the spring.

[0040] Figure 10 It is a schematic diagram of the pressure plate and the drive plate of Example 2.

[0041] Figure 11 It is a partial cross-sectional view of Example 3 for showing the positional relationship between the drive disk and the spring.

[0042] Figure 12 This is a schematic diagram of the change in Example 3 for illustrating the elastic deformation process of the spring.

[0043] Explanation of reference numerals: 1, pressure plate; 2, driving plate; 3, spring; 5, driving cylinder; 100, paper tube; 101, support plate; 102, connecting arm; 103, slide rail; 104, moving seat; 105, triangle plate; 106, slide cylinder; 107, motor; 108, first gear; 109, second gear; 11, cone; 12, driving cylinder; 13, ring groove; 14, keyway; 140, perforation ; 15. Second plate body; 16. Third plate body; 21. Drive rod; 22. Key block; 23. First plate body; 24. Compression spring; 25. Protrusion; 26. Protruding rod; 30. First curved segment; 31. Fixed segment; 32. First inclined segment; 33. Second inclined segment; 34. Embedded tooth; 35. Second curved segment; 36. Third inclined segment; 37. Third curved segment; 38. Fourth inclined segment; 39. Horizontal segment. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1 -Attached Figure 12 This application is described in further detail.

[0045] Example 1, Example 1 discloses a rewinding mechanism of a rewinding machine, such as Figure 1 、 Figure 2 、 Figure 3 As shown, the rewinding mechanism of the rewinder includes a frame, two pressure plates 1, two drive plates 2, a drive assembly, a rotating assembly and a supporting assembly, wherein the frame includes two support plates 101 and two connecting arms 102, the support plates 101 are vertically arranged, the two support plates 101 are oppositely arranged, the connecting arms 102 are horizontally arranged, and the two ends of the connecting arms 102 are fixedly connected to the two support plates 101 respectively.

[0046] The supporting assembly initially supports the paper roll 100 so that the axis of the paper roll 100 and the axis of the pressure plate 1 are approximately coincident, so that the pressure plate 1 can position and clamp the paper roll 100. Secondly, after rewinding is completed, the supporting assembly can also support the finished paper so that the pressure plate 1 can release the positioning clamping.

[0047] like Figure 2 As shown, the supporting assembly includes two movable seats 104, and the movable seats 104 slide and cooperate with the frame in a direction close to or away from the other movable seat 104. Specifically, a slide rail 103 is fixed between the two connecting arms 102, and the slide rail 103 is horizontally and vertically arranged with the connecting arms 102. The two movable seats 104 slide and cooperate with the slide rail 103. The movement drive of the movable seat 104 can be driven by manpower, or a linear drive structure such as a cylinder or an electric cylinder can be added to the frame as a power source for the movable seat 104.

[0048] The side of the movable seat 104 is fixed with multiple triangular plates 105 arranged side by side and spaced apart along the length direction of the connecting arm 102. The triangular plates 105 are arranged vertically. The triangular plates 105 of the two movable seats 104 are staggered, and the inclined surfaces of the triangular plates 105 are set as supporting surfaces, and the supporting surfaces are set upwards.

[0049] like Figure 3 、 Figure 4 As shown, the two pressure plates 1 are coaxially arranged, and the pressure plate 1 has a conical surface 11 that abuts against the inner edge of the end face of the paper tube 100. A driving cylinder 12 is coaxially fixed to the disk surface of the pressure plate 1 away from the other pressure plate 1, and a slide cylinder 106 is fixed to the support plate 101. The slide cylinder 106 and the driving cylinder 12 are coaxially arranged, and an annular groove 13 is provided on the end face of the driving cylinder 12 away from the pressure plate 1. The slide cylinder 106 and the annular groove 13 are axially slidingly matched, and the slide cylinder 106 and the annular groove 13 are rotationally matched.

[0050] The rotating assembly is used to drive the pressure plate 1 to rotate, specifically, Figure 1 、 Figure 4 The rotating assembly includes a motor 107 fixed to the support plate 101, the output shaft of the motor 107 is fixed with a first gear 108, and a second gear 109 is coaxially sleeved and fixed on the outside of the driving cylinder 12. The second gear 109 is engaged with the first gear 108, and the axial length of the second gear 109 is greater than or equal to the axial displacement stroke of the driving cylinder 12.

[0051] like Figure 5 、 Figure 6As shown, a plurality of circumferentially evenly distributed spring pieces 3 are fixed to the end face of the pressure plate 1, and the spring pieces 3 include a fixed section 31, a first curved section 30, a first inclined section 32 and a second inclined section 33 which are integrally formed in sequence. The fixed section 31 is fixedly connected to the end face of the pressure plate 1 by bolts. The shortest distance between the two first inclined sections 32 symmetrical with respect to the axis center of the pressure plate 1 gradually decreases axially away from the pressure plate 1, and the shortest distance between the two second inclined sections 33 symmetrical with respect to the axis center of the pressure plate 1 gradually increases axially away from the pressure plate 1, and the end of the second inclined section 33 is bent to form an embedded tooth 34.

[0052] like Figure 4 、 Figure 6 As shown, the driving disc 2 is coaxially fixed with a driving rod 21, and the driving rod 21 slides axially with the pressure plate 1 and is locked in rotation. Specifically, a through hole 140 is passed through the center of the pressure plate 1, and the driving rod 21 passes through the through hole 140. The inner wall of the through hole 140 is provided with a keyway 14, and a key block 22 is fixed to the outer wall of the driving rod 21. The key block 22 slides in cooperation with the keyway 14, so that the torque of the pressure plate 1 can be transmitted to the driving rod 21 and the driving disc 2 through the key block 22 and the keyway 14, and the driving rod 21 can slide axially relative to the pressure plate 1.

[0053] like Figure 5 、 Figure 7 As shown, the outer edge of the end face of the driving disc 2 abuts against the inclined surface of the first inclined section 32 , and a protrusion 25 is fixed to the outer peripheral surface of the driving disc 2 . The protrusion 25 is located in the circumferential gap between the first inclined sections 32 of two adjacent elastic sheets 3 .

[0054] The drive assembly has two-stage drive. When the drive assembly is driven in the first stage, it will drive the pressure plate 1 to move toward the other pressure plate 1. When the drive assembly is driven in the second stage, it will drive the drive rod 21 and the drive plate 2 to move axially, so that the outer edge of the end surface of the drive plate 2 abuts against the spring plate 3 to force the spring plate 3 to elastically deform, so that the embedded teeth 34 are embedded in the inner wall of the paper tube 100.

[0055] Specifically, Figure 4 、 Figure 8 As shown, the driving assembly includes a driving cylinder 5 and a compression spring 24. The driving cylinder 5 is installed on the support plate 101, and the end of the driving rod 21 is coaxially rotated with the end of the telescopic rod of the driving cylinder 5; the driving rod 21 is fixed with an annular first plate body 23, and the driving cylinder 12 is fixed with an annular second plate body 15 and an annular third plate body 16. The second plate body 15 and the third plate body 16 are respectively located on both sides of the axial direction of the first plate body 23, wherein the second plate body 15 blocks the path of the first plate body 23 moving away from the pressure plate 1; the two ends of the compression spring 24 are respectively abutted on the opposite surfaces of the first plate body 23 and the third plate body 16, and the elastic force of the compression spring 24 is used to force the pressure plate 1 to move relative to the driving rod 21 in the direction toward the other pressure plate 1.

[0056] The implementation principle of Example 1 is as follows: when placing the paper tube 100, the two movable seats 104 move toward each other, and the supporting surfaces of the triangular plates 105 of the two movable seats 104 jointly support the outer peripheral surface of the paper tube 100 to ensure that the axis of the paper tube 100 is at a certain height position, that is, the axis of the paper tube 100 is approximately coincident with the axis of the pressure plate 1, and then the driving cylinder 5 is driven for a period of time, and the telescopic rod of the driving cylinder 5 drives the driving rod 21 to advance a certain distance. The forward force of the driving rod 21 is applied to the driving cylinder 12 and the pressure plate 1 through the compression spring 24 to drive the pressure plate 1 forward, and the conical surfaces 11 of the two pressure plates 1 simultaneously abut against the inner edge of the end surface of the paper tube 100 to achieve the positioning of the paper tube 100. And preliminary clamping and fixing to ensure the coaxiality of the rotation axis of the paper tube 100 and the pressure plate 1, at the same time the compression spring 24 is elastically compressed, and the elastic force of the compression spring 24 is applied to the pressure plate 1 to increase the clamping force of the pressure plate 1 on the paper tube 100; then the driving cylinder 5 is driven to perform two-stage driving, and the telescopic rod of the driving cylinder 5 drives the driving rod 21 to move forward a distance. At this time, the pressure plate 1 cannot continue to move axially due to the limitation of the paper tube 100, and the driving rod 21 and the driving plate 2 move forward a distance relative to the pressure plate 1. The outer edge of the end face of the driving plate 2 abuts against the inclined surface of the first inclined section 32 of the spring piece 3, so as to force the first inclined section 32 and the second inclined section 33 of the spring piece 3 to elastically deform outward along the radial direction of the paper tube 100 (see Figure 8 ), so that the embedding teeth 34 of the spring piece 3 are embedded in the inner wall of the paper tube 100, so as to achieve the fixation of the spring piece 3 and the paper tube 100, thereby achieving the final clamping and fixing.

[0057] By embedding, the fixing strength of the paper tube 100 is improved, thereby improving the torque transmission effect of the pressure plate 1 and further improving the stability of the large-scale finished paper winding. At the same time, the structural deformation of the paper tube 100 is reduced and the shape of the finished paper is ensured to be stable.

[0058] After positioning and clamping, the two movable seats 104 move away from each other, so that the supporting surface of the triangular plate 105 is separated from the outer peripheral surface of the paper tube 100, so as to avoid an increase in friction when the paper tube 100 is subsequently rotated.

[0059] Then the paper is wrapped around the outside of the paper tube 100, and the motor 107 drives the driving tube 12 and the pressure plate 1 to rotate through gear transmission. The torque of the pressure plate 1 is transmitted to the paper tube 100 through the spring piece 3 and the embedded teeth 34, thereby driving the paper tube 100 to rotate. At the same time, since the protrusion 25 limits the circumferential position of the spring piece 3, the torque of the pressure plate 1 can be transmitted to the spring piece 3 and the paper tube 100 through the driving rod 21, the driving plate 2 and the protrusion 25 in turn, thereby greatly improving the torque transmission effect of the spring piece 3, thereby improving the stability of the winding of large-mass finished paper; the paper tube 100 rotates to complete the rewinding.

[0060] After the rewinding is completed, the rotating assembly stops the rotation of the pressure plate 1, and the two movable seats 104 move toward each other. The supporting surfaces of the triangular plates 105 of the two movable seats 104 jointly support the outer peripheral surface of the paper tube 100 to reduce the interference of the deadweight of the paper tube 100 on the retreat of the pressure plate 1 and the spring 3; the driving cylinder 5 first retracts the driving rod 21 and the driving disk 2, and the driving disk 2 releases the contact with the spring 3, and the spring 3 restores its deformation, so that the embedded teeth 34 are separated from the inner wall of the paper tube 100, and the driving cylinder 5 then drives the driving rod 21 and the driving disk 2 to retreat a distance. Since the first plate body 23 moving with the driving rod 21 abuts on the second plate body 15, it drives the second plate body 15, the driving cylinder 12 and the pressure plate 1 to retreat away from the paper tube 100, thereby releasing the positioning and clamping of the paper tube 100.

[0061] Then the two movable seats 104 move away from each other, so that the supporting surface of the triangular plate 105 is separated from the outer peripheral surface of the paper tube 100. The paper tube 100 loses its support and can fall to the collection area under the action of gravity, thereby improving the unloading efficiency.

[0062] Example 1 also discloses a rewinding machine, including the above-mentioned rewinding machine winding mechanism.

[0063] Example 2, Example 2 is different from Example 1 in that Figure 9 、 Figure 10 As shown, the convex block 25 is fixed with a cylindrical convex rod 26 , and the first inclined section 32 blocks the moving path of the convex rod 26 as it retreats along with the driving rod 21 .

[0064] When the driving cylinder 5 drives the driving rod 21 and the driving disk 2 to retract, the driving disk 2 releases its contact with the spring plate 3, and the spring plate 3 recovers its deformation, so that the embedded teeth 34 are separated from the inner wall of the paper tube 100. At the same time, the protruding rod 26 retreats with the driving disk 2, and the protruding rod 26 abuts against the first inclined section 32 to drive the first inclined section 32 to move radially inward along the paper tube 100, that is, to accelerate the resetting of the first inclined section 32, thereby improving the speed and stability of the embedded teeth 34 separating from the paper tube 100.

[0065] Example 3, Example 3 is different from Example 1 in that Figure 11 、 Figure 12 As shown, the spring piece 3 includes a fixed section 31, a second curved section 35, a third inclined section 36, a third curved section 37, a fourth inclined section 38 and a horizontal section 39 which are integrally formed and connected in sequence, wherein the fixed section 31 is fixedly connected to the end face of the pressure plate 1 by bolts, and the shortest distance between the two third inclined sections 36 symmetrical with the axis center of the pressure plate 1 gradually decreases axially away from the pressure plate 1, the inclined surface of the third inclined section 36 is used for abutting the outer edge of the end face of the drive plate 2, the fourth inclined section 38 is parallel to the third inclined section 36, and the end of the horizontal section 39 is bent to form an embedded tooth 34.

[0066] The protrusion 25 is located in the circumferential gap between the third inclined sections 36 of two adjacent spring pieces 3; the protrusion 25 is fixed with a cylindrical protrusion rod 26, the third inclined section 36 blocks the moving path of the protrusion rod 26 as it retreats with the driving rod 21, and the fourth inclined section 38 blocks the moving path of the protrusion rod 26 as it pushes forward with the driving rod 21.

[0067] In the initial state, the fourth inclined section 38 is parallel to the third inclined section 36. When the driving cylinder 5 is driven in the second stage, the telescopic rod of the driving cylinder 5 drives the driving rod 21 to move forward a distance. The outer edge of the end surface of the driving disk 2 abuts the inclined surface of the third inclined section 36 of the spring plate 3, forcing the third inclined section 36, the fourth inclined section 38 and the horizontal section 39 to elastically deform outwardly and tilted radially along the paper tube 100. At the same time, the protruding rod 26 of the driving disk 2 also abuts the fourth inclined section 38 of the spring plate 3, forcing the fourth inclined section 38 and the horizontal section 39 to elastically deform outwardly and tilted radially along the paper tube 100 (at this time, the fourth inclined section 38 is not parallel to the third inclined section 36). That is, the movement path of the horizontal section 39 and the embedded tooth 34 is affected by the driving in two inclined directions. The two driven movement paths are superimposed, so that the movement path direction of the embedded tooth 34 is close to the radial direction of the paper tube 100, thereby increasing the embedding depth and embedding stability of the embedded tooth 34, thereby improving the torque transmission effect.

[0068] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rewinding mechanism of a rewinding machine, characterized in that: The invention comprises a frame, two pressure plates (1), two driving plates (2), a driving assembly and a rotating assembly, wherein the two pressure plates (1) are coaxially arranged, the pressure plates (1) have a conical surface (11) abutting against the inner edge of the end surface of the paper tube (100), the end surface of the pressure plate (1) is fixed with a plurality of spring pieces (3) evenly arranged around the circumference, the free ends of the spring pieces (3) are provided with embedded teeth (34), the outer circumferential surface of the driving plate (2) is fixed with a protrusion (25), the protrusion (25) is located between two adjacent spring pieces (3), and the driving plate (2) is coaxially fixed with a driving rod (21). The driving rod (21) and the pressure plate (1) are axially slidable and anti-rotationally engaged; the driving assembly has two-stage driving, and when the driving assembly is driven in the first stage, it will drive the pressure plate (1) to move toward the other pressure plate (1); when the driving assembly is driven in the second stage, it will drive the driving rod (21) and the driving plate (2) to move axially, and the outer edge of the end face of the driving plate (2) abuts against the spring sheet (3) to force the spring sheet (3) to deform elastically, so that the embedded teeth (34) are embedded in the inner wall of the paper tube (100); the rotating assembly is used to drive the pressure plate (1) to rotate.

2. The rewinding mechanism of the rewinding machine according to claim 1, characterized in that: The invention also includes a supporting assembly, wherein the supporting assembly includes two movable seats (104), the movable seats (104) and the frame slide together in a direction close to or away from the other movable seat (104), the movable seats (104) are fixed with a plurality of triangular plates (105) arranged side by side at intervals, the triangular plates (105) of the two movable seats (104) are staggered, and the inclined surfaces of the triangular plates (105) are set as supporting surfaces.

3. The rewinding mechanism of the rewinding machine according to claim 1 or 2, characterized in that: The driving assembly includes a driving cylinder (5) and a compression spring (24), the driving cylinder (5) is installed on the frame, the end of the driving rod (21) is coaxially rotated with the end of the telescopic rod of the driving cylinder (5), the pressure plate (1) is coaxially fixed with a driving cylinder (12), the rotating assembly is used to drive the driving cylinder (12) to rotate, the driving rod (21) is fixed with a first plate (23), the driving cylinder (12) is fixed with a second plate (15), the second plate (15) blocks the path of the first plate (23) moving away from the pressure plate (1), and the compression spring (24) is used to force the pressure plate (1) to move relative to the driving rod (21) in a direction toward the other pressure plate (1).

4. The rewinding mechanism of the rewinding machine according to claim 3, characterized in that: The spring piece (3) comprises a fixed section (31), a first curved section (30), a first inclined section (32) and a second inclined section (33) which are integrally formed and connected in sequence. The fixed section (31) is fixedly connected to the end face of the pressure plate (1). The shortest distance between the two symmetrical first inclined sections (32) gradually decreases along the axial direction away from the pressure plate (1), and the shortest distance between the two symmetrical second inclined sections (33) gradually increases along the axial direction away from the pressure plate (1). The end of the second inclined section (33) is bent to form the embedded tooth (34); the inclined surface of the first inclined section (32) is used for abutting the outer edge of the end face of the drive plate (2), and the protrusion (25) is located in the circumferential gap between the first inclined sections (32) of the two adjacent spring pieces (3).

5. The rewinding mechanism of the rewinding machine according to claim 4, characterized in that: A cylindrical convex rod (26) is fixed to the convex block (25), and the first inclined section (32) blocks the moving path of the convex rod (26) as it retreats along with the driving rod (21).

6. The rewinding mechanism of the rewinding machine according to claim 3, characterized in that: The spring piece (3) comprises a fixed section (31), a second curved section (35), a third inclined section (36), a third curved section (37), a fourth inclined section (38) and a horizontal section (39) which are integrally formed and connected in sequence. The fixed section (31) is fixedly connected to the end face of the pressure plate (1). The shortest distance between the two symmetrical third inclined sections (36) gradually decreases away from the pressure plate (1) along the axial direction. The inclined surface of the third inclined section (36) is used for abutting the outer edge of the end face of the driving plate (2). The fourth inclined section (38) is parallel to the first inclined section (31). In the third inclined section (36), the end of the horizontal section (39) is bent to form the embedded tooth (34); the protrusion (25) is located in the circumferential gap between the third inclined sections (36) of two adjacent spring pieces (3); the protrusion (25) is fixed with a cylindrical protrusion (26); the third inclined section (36) blocks the protrusion (26) on the moving path when it retreats along with the driving rod (21), and the fourth inclined section (38) blocks the protrusion (26) on the moving path when it pushes forward along with the driving rod (21).

7. The rewinding mechanism of the rewinding machine according to claim 3, characterized in that: The frame is fixed with a slide cylinder (106), which is coaxially arranged with the driving cylinder (12). The end surface of the driving cylinder (12) away from the pressure plate (1) is provided with an annular groove (13), and the slide cylinder (106) and the annular groove (13) are axially slidingly matched, and the slide cylinder (106) and the annular groove (13) are rotationally matched.

8. The rewinding mechanism of the rewinding machine according to claim 3, characterized in that: The rotating assembly comprises a motor (107) fixed to the frame, a first gear (108) being fixed to the output shaft of the motor (107), a second gear (109) being coaxially sleeved and fixed on the outer side of the driving cylinder (12), the second gear (109) being meshed with the first gear (108), and an axial length of the second gear (109) being greater than or equal to the axial displacement stroke of the driving cylinder (12).

9. A rewinding machine, characterized in that: It includes the rewinding mechanism of the rewinding machine according to claim 1.

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