A curvature-adjustable flattening roller

Abstract

The invention discloses a curvature-adjustable flattening roller, comprising a roller core, a first connecting block, a second connecting block, connecting bolts, a first fixing device, a second fixing device, a bearing group, an inner sleeve group and an outer sleeve group. The roller core is axially divided from the top of itself into multiple layers on a diameter, and the division does not reach the end. The first connecting block is fixedly connected to the uppermost layer of the roller core, and the second connecting block is fixedly connected to the lowermost layer of the roller core. The first connecting block and the second connecting block are connected by connecting bolts. The bearing group comprises a plurality of bearings, the inner sleeve group comprises a plurality of inner sleeves, and the outer sleeve group comprises a plurality of outer sleeves. The outer sleeves have inner sleeves and bearings, which are all sleeved on the shaft core, and the inner sleeves are arranged on both sides of the bearing. The first fixing device is an axial rotation device, the top of the shaft core is arranged on the first fixing device, the second fixing device has a self-aligning bearing, and the end of the shaft core is arranged on the self-aligning bearing. The curvature of the flattening roller can be infinitely adjusted and the structure is simple.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment of aluminum alloy strips, and in particular to a curvature-adjustable flattening roller. Background Art

[0002] In the aluminum alloy strip heat treatment processing production line, the strip surface is often bent and uneven due to some reasons, and flattening rollers are often required to stretch and flatten the strip. In the subsequent processing steps, good flatness ensures the processing quality of the strip.

[0003] However, the flatness and curvature of most strips are different. Therefore, most of the existing flattening rollers with a single curvature cannot guarantee the flatness of these strips, and the adjustment mechanisms of the few adjustable flattening rollers are complex and have low reliability.

[0004] Therefore, how to provide a curvature-adjustable flattening roller to adjust the curvature of the flattening roller with a simple structure is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a curvature-adjustable flattening roller, so as to adjust the curvature of the flattening roller and the flattening roller has a simple structure.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A curvature-adjustable flattening roller comprises a shaft core, a first connecting block, a second connecting block, connecting bolts, a first fixing device, a second fixing device, a bearing group, an inner sleeve group and an outer sleeve group, wherein:

[0008] The shaft core is divided axially from its top end into multiple layers on a diameter, and a spacing is provided between the end point of the division and the end of the shaft core.

[0009] The first connection block is provided with a first connection hole, and a first extension plate is provided on one side of the first connection block. The first extension plate is fixedly connected to the uppermost layer of the shaft core.

[0010] A second connection hole is formed on the second connection block, and a second extension plate is disposed on one side of the second connection block. The second extension plate is fixedly connected to the bottommost layer of the shaft core.

[0011] The connecting bolt passes through the first connecting hole and the second connecting hole to fix the first connecting block and the second connecting block;

[0012] The bearing group includes a plurality of bearings, the inner sleeve group includes a plurality of inner sleeves, and the outer sleeve group includes a plurality of outer sleeves.

[0013] The outer sleeve has the inner sleeve and the bearing built in it, the inner sleeve and the bearing are both sleeved on the shaft core, and the inner sleeves are arranged on both sides of the bearing;

[0014] The first fixing device is an axial rotation device, and the top end of the shaft core is arranged on the first fixing device.

[0015] The second fixing device includes a bearing seat and a self-aligning bearing arranged on the bearing seat, and the end of the shaft core is arranged on the self-aligning bearing.

[0016] Preferably, the first fixing device is a worm gear reducer.

[0017] Preferably, the first connecting block and the second connecting block are located outside the first fixing device.

[0018] The first connecting block and the second connecting block are covered with a first protective cover.

[0019] A pointing ring is sleeved on the shaft core, and the pointing ring is fixed to the end of the first protective sleeve and is located between the first protective sleeve and the first fixing device.

[0020] Preferably, the portion of the shaft core between the first fixing device and the outer sleeve assembly is sequentially sleeved with a first baffle ring, a first baffle sheet, a first copper sleeve, a first sealing baffle sleeve and a first copper ring.

[0021] One end of the first retaining ring abuts against the first fixing device, and the other end thereof abuts against the first retaining sheet.

[0022] The tube wall of the first sealing sleeve has a step, the first copper sleeve is sleeved on the large diameter part of the first sealing sleeve, the small diameter part of the first sealing sleeve is sleeved by the outer sleeve and a first sealing ring is arranged between the two, and the first copper ring is sleeved on the small diameter part of the first sealing sleeve and abuts against the first sealing ring.

[0023] Preferably, in the above inner set,

[0024] The first inner sleeve located at the top of the shaft core is a single sleeve body, and the second inner sleeve located at the top of the shaft core includes a first sub-sleeve body and a second sub-sleeve body, and the butting surface of the first sub-sleeve body and the second sub-sleeve body is an arc surface.

[0025] The first inner sleeve located at the end of the shaft core is a single sleeve body, and the second inner sleeve located at the end of the shaft core includes a third sub-sleeve body and a fourth sub-sleeve body, and the butt joint surface of the third sub-sleeve body and the fourth sub-sleeve body is an arc surface.

[0026] The inner sleeves between the second inner sleeve at the top end of the shaft core and the second inner sleeve at the end end of the shaft core are arranged in pairs.

[0027] Preferably, the second fixing device is provided with a top extension tube in the direction toward the top of the shaft core.

[0028] The portion of the shaft core between the second fixing device and the outer sleeve assembly is sleeved with a second baffle, a second copper sleeve, a second sealing baffle sleeve and a second copper ring in sequence.

[0029] The top extension tube abuts against the second baffle,

[0030] The tube wall of the second sealing sleeve has a step, the second copper sleeve is sleeved on the large diameter part of the second sealing sleeve, the small diameter part of the second sealing sleeve is sleeved by the outer sleeve and a second sealing ring is arranged between the two, and the second copper ring is sleeved on the small diameter part of the second sealing sleeve and abuts against the second sealing ring.

[0031] Preferably, a directional mark is provided on the second baffle.

[0032] Preferably, the second fixing device is provided with an end extension tube in the direction toward the end of the shaft core.

[0033] The end of the shaft core is provided with an external thread.

[0034] The end of the shaft core is sequentially sleeved with a second protective sleeve, a third baffle, a second baffle ring, a wave spring sheet, a protective cover and a fastening nut.

[0035] The third baffle, the second baffle ring and the wave spring are all built into the protective cover, and the fastening nut cooperates with the external thread.

[0036] The terminal extension tube abuts against the second protective sleeve, and the second protective sleeve abuts against the third blocking piece and the protective cover at the same time.

[0037] Preferably, the shaft core is divided axially from its top end into three layers on one diameter.

[0038] The two dividing surfaces are arranged in parallel and perpendicular to the one diameter.

[0039] Preferably, the first connecting block is a cylinder, and the second connecting block is a semi-cylinder.

[0040] The second connecting block abuts against the first extending plate.

[0041] The curvature-adjustable flattening roller provided by the present invention can adjust the curvature of the flattening roller and has a simple structure. The curvature can be adjusted arbitrarily and is infinitely adjustable, which is beneficial for dealing with strips with different curvatures and flatnesses and improving their processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the structure of a curvature-adjustable flattening roller provided in an embodiment of the present invention;

[0044] Figure 2 A schematic diagram of the exploded structure of a curvature-adjustable flattening roller provided in an embodiment of the present invention;

[0045] Figure 3 A schematic diagram of the structure of a connecting bolt provided in an embodiment of the present invention;

[0046] Figure 4 A schematic structural diagram of a first protective cover provided by an embodiment of the present invention;

[0047] Figure 5 A schematic diagram of the structure of a pointing ring provided in an embodiment of the present invention;

[0048] Figure 6 A schematic diagram of the structure of a first sealing sleeve and a first sealing ring provided in an embodiment of the present invention;

[0049] Figure 7 A schematic diagram of the structure of a jacket at the top end of a shaft core provided by an embodiment of the present invention;

[0050] Figure 8 A schematic diagram of the exploded structure of a flexible spherical contact sleeve provided by an embodiment of the present invention;

[0051] Fig. 9 A schematic structural diagram of one side of the connection between the shaft core and the first fixing device provided in an embodiment of the present invention;

[0052] Fig.10 A schematic structural diagram of the other side of the connection between the shaft core and the first fixing device provided in an embodiment of the present invention;

[0053] Fig.11 A schematic structural diagram of one side of the connection between the shaft core and the second fixing device provided in an embodiment of the present invention;

[0054] Fig.12 A schematic structural diagram of the other side of the connection between the shaft core and the first fixing device provided in an embodiment of the present invention;

[0055] Fig.13 A schematic diagram of the structure of the shaft core provided by an embodiment of the present invention;

[0056] Fig.14 A schematic diagram of the structure of a first connection block provided in an embodiment of the present invention;

[0057] Fig.15 A schematic structural diagram of a second connection block provided in an embodiment of the present invention.

[0058] superior Figure 1-Figure 15 middle:

[0059] Connecting bolt 1, first protective sleeve 2, pointing ring 3, first fixing device 4, first baffle ring 5, first baffle plate 6, first copper sleeve 7, first sealing baffle plate 8, first copper ring 9, outer sleeve 10 at the top of the shaft core, first inner sleeve 11 at the top of the shaft core, flexible spherical contact sleeve 12, inner sleeve group 13, outer sleeve group 14, shaft core 15, second copper ring 16, second sealing ring 17, second sealing baffle plate 18, second copper sleeve 19, second baffle plate 20, second fixing device 21, second protective sleeve 22, third baffle plate 23, second baffle ring 24, wave spring sheet 25, protective cover 26, fastening nut 27, first sealing ring 28, first sub-sleeve body 29, second sub-sleeve body 30, first connecting block 31, second connecting block 32, first extension plate 33, second extension plate 34. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] Please refer to Figures 1 to 15 , Figure 1 A schematic diagram of the structure of a curvature-adjustable flattening roller provided in an embodiment of the present invention; Figure 2 A schematic diagram of the exploded structure of a curvature-adjustable flattening roller provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a connecting bolt provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a first protective cover provided by an embodiment of the present invention; Figure 5 A schematic diagram of the structure of a pointing ring provided in an embodiment of the present invention; Figure 6A schematic diagram of the structure of a first sealing sleeve and a first sealing ring provided in an embodiment of the present invention; Figure 7 A schematic diagram of the structure of a jacket at the top end of a shaft core provided by an embodiment of the present invention; Figure 8 A schematic diagram of the exploded structure of a flexible spherical contact sleeve provided by an embodiment of the present invention; Fig. 9 A schematic structural diagram of one side of the connection between the shaft core and the first fixing device provided in an embodiment of the present invention; Fig.10 A schematic structural diagram of the other side of the connection between the shaft core and the first fixing device provided in an embodiment of the present invention; Fig.11 A schematic structural diagram of one side of the connection between the shaft core and the second fixing device provided in an embodiment of the present invention; Fig.12 A schematic structural diagram of the other side of the connection between the shaft core and the first fixing device provided in an embodiment of the present invention; Fig.13 A schematic diagram of the structure of the shaft core provided by an embodiment of the present invention; Fig.14 A schematic diagram of the structure of a first connection block provided in an embodiment of the present invention; Fig.15 A schematic structural diagram of a second connection block provided in an embodiment of the present invention.

[0062] The curvature-adjustable flattening roller provided in the embodiment of the present invention comprises a shaft core 15, a first connecting block 31, a second connecting block 32, a connecting bolt 1, a first fixing device 4, a second fixing device 21, a bearing group, an inner sleeve group and an outer sleeve group, wherein:

[0063] The shaft core 15 is divided axially from its top end into multiple layers on a diameter, and there is a spacing between the end point of the division and the end of the shaft core 15. A first connection hole is provided on the first connection block 31, and a first extension plate 33 is provided on one side of the first connection block 31. The first extension plate 33 is fixedly connected to the uppermost layer of the shaft core 15. A second connection hole is provided on the second connection block 32, and a second extension plate 34 is provided on one side of the second connection block 32. The second extension plate 34 is fixedly connected to the lowermost layer of the shaft core 15. The connecting bolt 1 The first connecting block 31 and the second connecting block 32 are fixedly connected through the first connecting hole and the second connecting hole; the bearing group includes multiple bearings, the inner sleeve group 13 includes multiple inner sleeves, the outer sleeve group 14 includes multiple outer sleeves, the outer sleeves have inner sleeves and bearings inside, the inner sleeves and the bearings are both sleeved on the shaft core 15, and the inner sleeves are arranged on both sides of the bearing; the first fixing device 4 is an axial rotation device, the top end of the shaft core 15 is arranged on the first fixing device 4, the second fixing device 21 includes a bearing seat and a self-aligning bearing arranged on the bearing seat, and the end of the shaft core 15 is arranged on the self-aligning bearing.

[0064] The curvature-adjustable flattening roller provided by the present invention can adjust the curvature of the flattening roller and has a simple structure. The curvature can be adjusted arbitrarily and is infinitely adjustable, which is beneficial for dealing with strips with different curvatures and flatnesses and improving their processing quality.

[0065] The curvature-adjustable flattening roller provided by the present invention has a shaft core 15 which is divided axially from its top end into multiple layers on a diameter, but is not completely divided into multiple layers, but there is a gap between the end point of the division and the end of the shaft core 15, that is, most of the shaft core 15 is divided into multiple layers, and the remaining small part is still a whole cylinder. It can achieve infinite bending and infinite adjustment of the bending direction and curvature.

[0066] The first fixing device 4 is a worm gear reducer, which rotates the shaft core 15 to adjust the bending direction, which is beneficial to the extension and flattening of the flattening roller. The self-aligning bearing in the second fixing device 21 can adapt to the bending and tilting of the shaft core 15.

[0067] Specifically, the shaft core 15 is divided axially from its top end into three layers on a diameter, and two dividing surfaces are arranged in parallel and perpendicular to the diameter. The first connecting block 31 is a cylinder, and the second connecting block 32 is a semi-cylinder, and the second connecting block 32 abuts against the first extension plate 33. Then the first connecting block 31 is fixedly connected to the uppermost layer, and the second connecting block 32 is fixedly connected to the lowermost layer. The layer in the middle plays a supporting role, so that the curvature can be adjusted arbitrarily, which is stepless adjustment.

[0068] The tightening action of the connecting bolt 1 causes the two outer ends of the three-piece core 15 to be subjected to interaction forces of equal magnitude and opposite directions, and under the action of this force, in cooperation with the action of the outer sleeve, the core 15 is bent.

[0069] In order to further optimize the above solution, the first connecting block 31 and the second connecting block 32 are located outside the first fixing device 4, the first connecting block 31 and the second connecting block 32 are sleeved with the first protective sleeve 2, and the shaft core 15 is sleeved with a pointing ring 3, which is fixed at the end of the first protective sleeve 2 and located between the first protective sleeve 2 and the first fixing device 4. The pointing ring 3 can mark the bending direction of the shaft core 15.

[0070] In order to further optimize the above scheme, the part of the shaft core 15 located between the first fixing device 4 and the outer sleeve group 14 is sequentially sleeved with a first baffle ring 5, a first baffle plate 6, a first copper sleeve 7, a first sealing baffle sleeve 8 and a first copper ring 9, one end of the first baffle ring 5 abuts the first fixing device 4, and the other end thereof abuts the first baffle plate 6. The tube wall of the first sealing baffle sleeve 8 has a step, the first copper sleeve 7 is sleeved on the large diameter part of the first sealing baffle sleeve 8, the small diameter part of the first sealing baffle sleeve 8 is sleeved by the outer sleeve and a first sealing ring 28 is arranged between the two, and the first copper ring 9 is sleeved on the small diameter part of the first sealing baffle sleeve 8 and abuts against the first sealing ring 28.

[0071] In order to further optimize the above scheme, the second fixing device 21 is provided with a top extension tube in the direction toward the top of the shaft core 15, and the part of the shaft core 15 located between the second fixing device 21 and the outer sleeve group 14 is sequentially sleeved with a second baffle 20, a second copper sleeve 19, a second sealing baffle sleeve 18 and a second copper ring 16, the top extension tube abuts the second baffle 20, the tube wall of the second sealing baffle sleeve 18 has a step, the second copper sleeve 19 is sleeved on the large diameter part of the second sealing baffle sleeve 18, the small diameter part of the second sealing baffle sleeve 18 is sleeved by the outer sleeve and a second sealing ring 17 is arranged between the two, and the second copper ring 19 is sleeved on the small diameter part of the second sealing baffle sleeve 18 and abuts the second sealing ring 17.

[0072] The second baffle 20 is provided with a directional mark, such as an arrow mark, which can mark the bending direction of the shaft core 15 .

[0073] In order to further optimize the above scheme, the second fixing device 21 is provided with an end extension tube in the direction of the end of the shaft core 15, the end of the shaft core 15 is provided with an external thread, and the end of the shaft core 15 is sequentially sleeved with a second protective sleeve 22, a third baffle 23, a second baffle ring 24, a wave spring sheet 25, a protective cover 26 and a fastening nut 27, the third baffle 23, the second baffle ring 24 and the wave spring sheet 25 are all built in the protective cover 26, the fastening nut 27 cooperates with the external thread, the end extension tube abuts against the second protective sleeve 22, and the second protective sleeve 22 abuts against the third baffle 23 and the protective cover 26 at the same time. Among them, when the shaft core 15 is bent, there will be axial movement, and the wave spring sheet 25 can play a buffering role.

[0074] The curvature adjustable flattening roller provided by the present invention comprises a plurality of bearings in the bearing group, a plurality of inner sleeves in the inner sleeve group 13, and a plurality of outer sleeves in the outer sleeve group 14, which are used in cooperation with each other. In specific implementation, except for the outer sleeve 10 at the top of the shaft core and the outer sleeve at the end, that is, the two outer sleeves at the outermost side, each of the remaining outer sleeves (such as Figure 2 A bearing is arranged in the middle of the inner hole of the outer sleeve (the part indicated by the middle label 14), and the bearing can be a deep groove ball bearing. In the inner hole of the outer sleeve, an inner sleeve is arranged on each side of the bearing. Two adjacent outer sleeves actually have two inner sleeves, which are called a pair of inner sleeves. The curvature adjustable flattening roller provided by the present invention has a total of fourteen outer sleeves. Except for the two outermost ones, the remaining twelve outer sleeves (such as Figure 2 The part indicated by the number 14) is equipped with twelve bearings and eleven pairs of inner sleeves (such as Figure 2 There is a small gap between two adjacent outer sleeves, which is conducive to the bending of the outer sleeve after the shaft core 15 is bent.

[0075] In the inner sleeve assembly, the first inner sleeve 11 located at the top of the shaft core 15 is a single sleeve body, and the first inner sleeve located at the end of the shaft core 15 is a single sleeve body, that is, the two outer sleeves closest to the outside have two bearings built in, and there is a single inner sleeve between the two bearings. The second inner sleeve located at the top of the shaft core 15 is a flexible spherical contact sleeve 12, including a first sub-sleeve body 29 and a second sub-sleeve body 30, and the butt joint surface of the first sub-sleeve body 29 and the second sub-sleeve body 30 is an arc surface. The second inner sleeve located at the end of the shaft core 15 is a flexible spherical contact sleeve, including a third sub-sleeve body and a fourth sub-sleeve body, and the butt joint surface of the third sub-sleeve body and the fourth sub-sleeve body is an arc surface.

[0076] The inner sleeves between the second inner sleeve at the top of the shaft core 15 and the second inner sleeve at the bottom of the shaft core 15 are arranged in pairs, namely the eleven pairs of inner sleeves mentioned above.

[0077] The curvature-adjustable flattening roller provided in the embodiment of the present invention has good operability and maintainability, low failure rate, simple structure, easy assembly and maintenance, long service life, simple maintenance, and has wide popularization, practical value and versatility.

[0078] In specific implementation, the curvature adjustable flattening roller provided in the embodiment of the present invention has a flattening roller shaft core which is made of a 45# steel that has been quenched and tempered and then divided into three parts. The outer sleeve is a thin steel sleeve.

[0079] The curvature-adjustable flattening roller provided in the embodiment of the present invention can solve the problem that most flattening rollers have a fixed curvature and a small number of adjustable flattening rollers have a complex adjustment mechanism and low reliability. The curvature-adjustable bending roller designed can stretch and flatten strips with different curvatures, which will improve the processing quality of the strips.

[0080] The curvature-adjustable flattening roller provided in the embodiment of the present invention can make the curvature of the flattening roller arbitrary, which is helpful for processing strips with different curvatures and flatnesses and improving their processing quality. It can ensure the reliability of stretching and flattening and improve the working efficiency of flattening.

[0081] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A curvature-adjustable flattening roller, characterized in that: It includes a shaft core, a first connecting block, a second connecting block, connecting bolts, a first fixing device, a second fixing device, a bearing group, an inner sleeve group and an outer sleeve group, wherein: The shaft core is divided axially from its top end into three layers on a diameter, two dividing surfaces are arranged in parallel and perpendicular to the diameter, and there is a distance between the end point of the division and the end of the shaft core, and the middle layer plays a supporting role; The first connection block is a cylinder with a first connection hole formed thereon. A first extension plate is disposed on one side of the first connection block. The first extension plate is fixedly connected to the uppermost layer of the shaft core. A second connection hole is provided on the second connection block, a second extension plate is provided on one side of the second connection block, the second extension plate is fixedly connected to the bottommost layer of the shaft core, and the second connection block is a semi-cylinder that abuts against the first extension plate; The connecting bolt passes through the first connecting hole and the second connecting hole to fix the first connecting block and the second connecting block, and the tightening action of the connecting bolt causes the two outer ends of the three-piece cut shaft core to be subjected to interaction forces of equal magnitude and opposite directions; The bearing group includes a plurality of bearings, the inner sleeve group includes a plurality of inner sleeves, and the outer sleeve group includes a plurality of outer sleeves. The outer sleeve has the inner sleeve and the bearing built in it, the inner sleeve and the bearing are both sleeved on the shaft core, and the inner sleeves are arranged on both sides of the bearing; The first fixing device is an axial rotation device, and the top end of the shaft core is arranged on the first fixing device. The second fixing device includes a bearing seat and a self-aligning bearing arranged on the bearing seat, and the end of the shaft core is arranged on the self-aligning bearing.

2. The curvature-adjustable flattening roller according to claim 1, characterized in that: The first fixing device is a worm gear reducer.

3. The curvature-adjustable flattening roller according to claim 1, characterized in that: The first connecting block and the second connecting block are located outside the first fixing device. The first connecting block and the second connecting block are covered with a first protective cover. A pointing ring is sleeved on the shaft core, and the pointing ring is fixed to the end of the first protective sleeve and is located between the first protective sleeve and the first fixing device.

4. The curvature-adjustable flattening roller according to claim 1, characterized in that: The portion of the shaft core between the first fixing device and the outer sleeve assembly is sleeved with a first stop ring, a first stop sheet, a first copper sleeve, a first sealing stop sleeve and a first copper ring in sequence. One end of the first retaining ring abuts against the first fixing device, and the other end thereof abuts against the first retaining sheet. The tube wall of the first sealing sleeve has a step, the first copper sleeve is sleeved on the large diameter part of the first sealing sleeve, the small diameter part of the first sealing sleeve is sleeved by the outer sleeve and a first sealing ring is arranged between the two, and the first copper ring is sleeved on the small diameter part of the first sealing sleeve and abuts against the first sealing ring.

5. The curvature-adjustable flattening roller according to claim 1, characterized in that: In the inner set, The first inner sleeve located at the top of the shaft core is a single sleeve body, and the second inner sleeve located at the top of the shaft core includes a first sub-sleeve body and a second sub-sleeve body, and the butting surface of the first sub-sleeve body and the second sub-sleeve body is an arc surface. The first inner sleeve located at the end of the shaft core is a single sleeve body, and the second inner sleeve located at the end of the shaft core includes a third sub-sleeve body and a fourth sub-sleeve body, and the butt joint surface of the third sub-sleeve body and the fourth sub-sleeve body is an arc surface. The inner sleeves between the second inner sleeve at the top end of the shaft core and the second inner sleeve at the end end of the shaft core are arranged in pairs.

6. The curvature-adjustable flattening roller according to claim 1, characterized in that: The second fixing device is provided with a top extension tube in the direction toward the top of the shaft core. The portion of the shaft core between the second fixing device and the outer sleeve assembly is sleeved with a second baffle, a second copper sleeve, a second sealing baffle sleeve and a second copper ring in sequence. The top extension tube abuts against the second baffle, The tube wall of the second sealing sleeve has a step, the second copper sleeve is sleeved on the large diameter part of the second sealing sleeve, the small diameter part of the second sealing sleeve is sleeved by the outer sleeve and a second sealing ring is arranged between the two, and the second copper ring is sleeved on the small diameter part of the second sealing sleeve and abuts against the second sealing ring.

7. The curvature-adjustable flattening roller according to claim 6, characterized in that: The second baffle is provided with a pointing mark.

8. The curvature-adjustable flattening roller according to claim 1, characterized in that: The second fixing device is provided with an end extension tube in the direction toward the end of the shaft core. The end of the shaft core is provided with an external thread. The end of the shaft core is sequentially sleeved with a second protective sleeve, a third baffle, a second baffle ring, a wave spring sheet, a protective cover and a fastening nut. The third baffle, the second baffle ring and the wave spring are all built into the protective cover, and the fastening nut cooperates with the external thread. The terminal extension tube abuts against the second protective sleeve, and the second protective sleeve abuts against the third blocking piece and the protective cover at the same time.

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