阅读说明：本技术 一种弯曲度可调式展平辊 (Roll with adjustable crookedness ) 是由 蒋世伟 杨益 于 2020-12-21 设计创作，主要内容包括：本发明公开一种弯曲度可调式展平辊,包括辊芯、第一连接块、第二连接块、连接螺栓、第一固定装置、第二固定装置、轴承组、内套组和外套组,辊芯从自身的顶端开始沿轴向分割在一条直径上呈多层设置,且分割不到末端,第一连接块与辊芯的被分割出的最上层固定连接,第二连接块与辊芯的被分割出的最下层固定连接,第一连接块和第二连接块通过连接螺栓连接；轴承组包括多个轴承,内套组包括多个内套,外套组包括多个外套,外套内置内套和轴承,均套设在轴芯,轴承的两侧均设置有内套；第一固定装置为轴向转动装置,轴芯顶端设置在第一固定装置上,第二固定装置上具有调心轴承,轴芯的末端设置在调心轴承上。能够无极调节展平辊的弯曲且结构简单。(The invention discloses a curvature-adjustable flattening roller which comprises a roller core, a first connecting block, a second connecting block, a connecting bolt, a first fixing device, a second fixing device, a bearing group, an inner sleeve group and an outer sleeve group, wherein the roller core is divided on one diameter from the top end of the roller core along the axial direction and is arranged in a multilayer mode, the dividing cannot be carried out to the tail end, the first connecting block is fixedly connected with the divided uppermost layer of the roller core, the second connecting block is fixedly connected with the divided lowermost layer of the roller core, and the first connecting block is connected with the second connecting block through the connecting bolt; the bearing group comprises a plurality of bearings, the inner sleeve group comprises a plurality of inner sleeves, the outer sleeve group comprises a plurality of outer sleeves, the inner sleeves and the bearings are arranged in the outer sleeves and are sleeved on the shaft core, and the inner sleeves are arranged on two sides of the bearings; the first fixing device is an axial rotating device, the top end of the shaft core is arranged on the first fixing device, the second fixing device is provided with a self-aligning bearing, and the tail end of the shaft core is arranged on the self-aligning bearing. The bending of the flattening roll can be adjusted in a stepless manner, and the structure is simple.)

1. A curvature-adjustable flattening roll is characterized by comprising a roll core, a first connecting block, a second connecting block, a connecting bolt, a first fixing device, a second fixing device, a bearing group, an inner sleeve group and an outer sleeve group, wherein,

the roller core is divided into a plurality of layers on a diameter from the top end of the roller core along the axial direction, and a distance is arranged between the division end point and the tail end of the roller core,

the first connecting block is provided with a first connecting hole, one side of the first connecting block is provided with a first extending plate which is fixedly connected with the divided uppermost layer of the roller core,

a second connecting hole is formed in the second connecting block, a second extending plate is arranged on one side of the second connecting block and fixedly connected with the divided lowest layer of the roller core,

the connecting bolt penetrates through the first connecting hole and the second connecting hole to fixedly connect the first connecting block and the second connecting block;

the bearing set comprises a plurality of bearings, the inner sleeve set comprises a plurality of inner sleeves, the outer sleeve set comprises a plurality of outer sleeves,

the inner sleeve and the bearing are arranged in the outer sleeve, the inner sleeve and the bearing are sleeved on the shaft core, and the inner sleeve is arranged on two sides of the bearing;

the first fixing device is an axial rotating device, the top end of the shaft core is arranged on the first fixing device,

the second fixing device comprises a bearing seat and a self-aligning bearing arranged on the bearing seat, and the tail end of the shaft core is arranged on the self-aligning bearing.

2. The bow-adjustable flattening roll according to claim 1, characterized in that the first fixing means is a worm gear reducer.

3. The bow-adjustable nip roll according to claim 1, wherein the first connecting block and the second connecting block are located outside the first fixing device,

a first protective sleeve is sleeved on the first connecting block and the second connecting block,

the shaft core is sleeved with a pointing ring, and the pointing ring is fixed at the end part of the first protection sleeve and is positioned between the first protection sleeve and the first fixing device.

4. The bow-adjustable flattening roll according to claim 1, characterized in that a first baffle ring, a first baffle, a first copper sleeve, a first sealing baffle sleeve and a first copper ring are sequentially sleeved on a portion of the shaft core between the first fixing device and the outer sleeve,

one end of the first baffle ring is abutted against the first fixing device, the other end of the first baffle ring is abutted against the first baffle plate,

the pipe wall of the first sealing baffle sleeve is provided with a step, the first copper sleeve is arranged on the large-diameter part of the first sealing baffle sleeve, the small-diameter part of the first sealing baffle sleeve is sleeved with the outer sleeve, a first sealing ring is arranged between the outer sleeve and the outer sleeve, and the first copper ring is arranged on the small-diameter part of the first sealing baffle sleeve and abutted to the first sealing ring.

5. The bow-adjustable nip roll according to claim 1, wherein in the inner set,

the first inner sleeve positioned at the top end of the shaft core is a single sleeve body, the second inner sleeve positioned at the top end of the shaft core comprises a first sub-sleeve body and a second sub-sleeve body, the butt joint surface of the first sub-sleeve body and the second sub-sleeve body is an arc surface,

the first inner sleeve positioned at the tail end of the shaft core is a single sleeve body, the second inner sleeve positioned at the tail end of the shaft core comprises a third sub sleeve body and a fourth sub sleeve body, 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 positioned at the top end of the shaft core and the second inner sleeve positioned at the tail end of the shaft core are arranged in pairs.

6. The bow-adjustable flattening roll according to claim 1, characterized in that the second fixing means is provided with a top end extension pipe toward the top end of the shaft core,

a second baffle plate, a second copper sleeve, a second sealing baffle sleeve and a second copper ring are sequentially sleeved on the part of the shaft core, which is positioned between the second fixing device and the outer sleeve,

the top end extension pipe is abutted against the second baffle plate,

the pipe wall of the second sealing baffle sleeve is provided with a step, the second copper sleeve is sleeved on the large-diameter part of the second sealing baffle sleeve, the small-diameter part of the second sealing baffle sleeve is sleeved with the outer sleeve, a second sealing ring is arranged between the outer sleeve and the second copper sleeve, and the second copper ring is sleeved on the small-diameter part of the second sealing baffle sleeve and abutted to the second sealing ring.

7. The bow-adjustable flattening roll according to claim 6, characterized in that a pointing indicator is provided on the second apron.

8. The bow-adjustable flattening roll according to claim 1, characterized in that the second fixing means is provided with a tip extension pipe in a direction toward the tip of the shaft core,

the end part of the tail end of the shaft core is provided with an external thread,

the tail end of the shaft core is sequentially sleeved with a second protective sleeve, a third baffle, a second baffle ring, a wave-shaped spring piece, a protective cover and a fastening screw cap,

the third baffle plate, the second baffle ring and the wave-shaped spring piece are all arranged in the protective cover, the fastening screw cap is matched with the external thread,

the tail end extension pipe is abutted to the second protective sleeve, and the second protective sleeve is simultaneously abutted to the third separation blade and the protective cover.

9. The bow-adjustable flattening roll according to claim 1, characterized in that the roll core is divided axially from the top end thereof into three layers on one diameter,

the two dividing surfaces are arranged in parallel and perpendicular to the diameter.

10. The bow-adjustable flattening roll according to claim 1, wherein the first connecting block is a cylindrical body, the second connecting block is a semi-cylindrical body,

the second connecting block abuts against the first extending plate.

Technical Field

The invention relates to the technical field of heat treatment processing of aluminum alloy strips, in particular to a curvature-adjustable flattening roll.

Background

In the heat treatment processing production line of the aluminum alloy strip, the surface of the strip is often bent and uneven for some reasons, a flattening roller is often needed to stretch and flatten the strip, and the good flatness ensures the processing quality of the strip in the subsequent processing procedures.

However, the flatness and the curvature of most of the strips are different, so that the flatness of the strips cannot be guaranteed by most of the existing flattening rollers with single bending amount, and the adjusting mechanisms of a few adjustable flattening rollers are complex and have low reliability.

Therefore, how to provide a roll with adjustable bending degree to adjust the bending degree of the roll and have a simple structure is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a roll with adjustable bow, so as to adjust the bow of the roll and have a simple structure.

In order to achieve the purpose, the invention provides the following technical scheme:

a curvature-adjustable flattening roll comprises a roll core, a first connecting block, a second connecting block, a connecting bolt, a first fixing device, a second fixing device, a bearing set, an inner sleeve set and an outer sleeve set, wherein,

the roller core is divided into a plurality of layers on a diameter from the top end of the roller core along the axial direction, and a distance is arranged between the division end point and the tail end of the roller core,

the first connecting block is provided with a first connecting hole, one side of the first connecting block is provided with a first extending plate which is fixedly connected with the divided uppermost layer of the roller core,

a second connecting hole is formed in the second connecting block, a second extending plate is arranged on one side of the second connecting block and fixedly connected with the divided lowest layer of the roller core,

the connecting bolt penetrates through the first connecting hole and the second connecting hole to fixedly connect the first connecting block and the second connecting block;

the bearing set comprises a plurality of bearings, the inner sleeve set comprises a plurality of inner sleeves, the outer sleeve set comprises a plurality of outer sleeves,

the inner sleeve and the bearing are arranged in the outer sleeve, the inner sleeve and the bearing are sleeved on the shaft core, and the inner sleeve is arranged on two sides of the bearing;

the first fixing device is an axial rotating device, the top end of the shaft core is arranged on the first fixing device,

the second fixing device comprises a bearing seat and a self-aligning bearing arranged on the bearing seat, and the tail end of the shaft core is arranged on the self-aligning bearing.

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

Preferably, the first connecting block and the second connecting block are located outside the first fixing device,

a first protective sleeve is sleeved on the first connecting block and the second connecting block,

the shaft core is sleeved with a pointing ring, and the pointing ring is fixed at the end part of the first protection sleeve and is positioned between the first protection sleeve and the first fixing device.

Preferably, a first retaining ring, a first retaining plate, a first copper sleeve, a first sealing retaining sleeve and a first copper ring are sequentially sleeved on the part, located between the first fixing device and the outer sleeve, of the shaft core,

one end of the first baffle ring is abutted against the first fixing device, the other end of the first baffle ring is abutted against the first baffle plate,

the pipe wall of the first sealing baffle sleeve is provided with a step, the first copper sleeve is arranged on the large-diameter part of the first sealing baffle sleeve, the small-diameter part of the first sealing baffle sleeve is sleeved with the outer sleeve, a first sealing ring is arranged between the outer sleeve and the outer sleeve, and the first copper ring is arranged on the small-diameter part of the first sealing baffle sleeve and abutted to the first sealing ring.

Preferably, in the above inner set,

the first inner sleeve positioned at the top end of the shaft core is a single sleeve body, the second inner sleeve positioned at the top end of the shaft core comprises a first sub-sleeve body and a second sub-sleeve body, the butt joint surface of the first sub-sleeve body and the second sub-sleeve body is an arc surface,

the first inner sleeve positioned at the tail end of the shaft core is a single sleeve body, the second inner sleeve positioned at the tail end of the shaft core comprises a third sub sleeve body and a fourth sub sleeve body, 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 positioned at the top end of the shaft core and the second inner sleeve positioned at the tail end of the shaft core are arranged in pairs.

Preferably, the second fixing device is provided with a top end extension tube facing the top end of the shaft core,

a second baffle plate, a second copper sleeve, a second sealing baffle sleeve and a second copper ring are sequentially sleeved on the part of the shaft core, which is positioned between the second fixing device and the outer sleeve,

the top end extension pipe is abutted against the second baffle plate,

the pipe wall of the second sealing baffle sleeve is provided with a step, the second copper sleeve is sleeved on the large-diameter part of the second sealing baffle sleeve, the small-diameter part of the second sealing baffle sleeve is sleeved with the outer sleeve, a second sealing ring is arranged between the outer sleeve and the second copper sleeve, and the second copper ring is sleeved on the small-diameter part of the second sealing baffle sleeve and abutted to the second sealing ring.

Preferably, the second stop is provided with a pointing mark.

Preferably, the second fixing device is provided with a terminal extension tube toward the terminal of the shaft core,

the end part of the tail end of the shaft core is provided with an external thread,

the tail end of the shaft core is sequentially sleeved with a second protective sleeve, a third baffle, a second baffle ring, a wave-shaped spring piece, a protective cover and a fastening screw cap,

the third baffle plate, the second baffle ring and the wave-shaped spring piece are all arranged in the protective cover, the fastening screw cap is matched with the external thread,

the tail end extension pipe is abutted to the second protective sleeve, and the second protective sleeve is simultaneously abutted to the third separation blade and the protective cover.

Preferably, the roll core is divided into three layers on a diameter along the axial direction from the top end of the roll core,

the two dividing surfaces are arranged in parallel and perpendicular to the diameter.

Preferably, the first connecting block is a cylinder, the second connecting block is a semi-cylinder,

the second connecting block abuts against the first extending plate.

The curvature-adjustable flattening roll provided by the invention can be used for adjusting the curvature of the flattening roll, is simple in structure, can be adjusted at will, is stepless, is beneficial to dealing with strips with different curvatures and flatness, and improves the processing quality of the strips.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a bow-adjustable flattening roll according to an embodiment of the present invention;

FIG. 2 is an exploded view of a roll with adjustable bow according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a connecting bolt according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a first protective sheath according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a pointing ring according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a first seal spacer and a first seal ring according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of an outer sleeve at the tip end of a shaft core according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an exploded view of a bendable spherical contact sleeve according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of one side of a joint between a shaft core and a first fixing device according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of the other side of the joint of the shaft core and the first fixing device according to the embodiment of the present invention;

FIG. 11 is a schematic structural view of one side of a joint between a shaft core and a second fixing device according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of the other side of the joint of the shaft core and the first fixing device according to the embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a shaft core provided in an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a first connection block according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a second connection block according to an embodiment of the present invention.

In the above fig. 1-15:

the connecting bolt comprises a connecting bolt 1, a first protective sleeve 2, a pointing ring 3, a first fixing device 4, a first baffle ring 5, a first baffle 6, a first copper sleeve 7, a first sealing baffle sleeve 8, a first copper ring 9, an outer sleeve 10 at the top end of a shaft core, a first inner sleeve 11 at the top end of the shaft core, a bendable spherical contact sleeve 12, an inner sleeve group 13, an outer sleeve group 14, a shaft core 15, a second copper ring 16, a second sealing ring 17, a second sealing baffle sleeve 18, a second copper sleeve 19, a second baffle 20, a second fixing device 21, a second protective sleeve 22, a third baffle 23, a second baffle ring 24, a wave-shaped spring piece 25, a protective cover 26, a fastening nut 27, a first sealing ring 28, a first sub-sleeve body 29, a second sub-sleeve body 30, a first connecting block 31, a second connecting block 32, a first extending plate 33 and a second extending plate 34.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 15, fig. 1 is a schematic structural view of a bow-adjustable flattening roll according to an embodiment of the present invention; FIG. 2 is an exploded view of a roll with adjustable bow according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of a connecting bolt according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of a first protective sheath according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a pointing ring according to an embodiment of the present invention; FIG. 6 is a schematic diagram of a first seal spacer and a first seal ring according to an embodiment of the present invention; FIG. 7 is a schematic structural view of an outer sleeve at the tip end of a shaft core according to an embodiment of the present invention; FIG. 8 is a schematic diagram of an exploded view of a bendable spherical contact sleeve according to an embodiment of the present invention; FIG. 9 is a schematic structural view of one side of a joint between a shaft core and a first fixing device according to an embodiment of the present invention; FIG. 10 is a schematic structural view of the other side of the joint of the shaft core and the first fixing device according to the embodiment of the present invention; FIG. 11 is a schematic structural view of one side of a joint between a shaft core and a second fixing device according to an embodiment of the present invention; FIG. 12 is a schematic structural view of the other side of the joint of the shaft core and the first fixing device according to the embodiment of the present invention; FIG. 13 is a schematic structural diagram of a shaft core provided in an embodiment of the present invention; fig. 14 is a schematic structural diagram of a first connection block according to an embodiment of the present invention; fig. 15 is a schematic structural diagram of a second connection block according to an embodiment of the present invention.

The bow-adjustable flattening roll provided by the embodiment of the invention comprises a roll 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,

the roller core 15 is divided into a plurality of layers on a diameter from the top end of the roller core 15 along the axial direction, a distance is reserved between the dividing end point and the tail end of the roller core 15, a first connecting hole is formed in the first connecting block 31, a first extending plate 33 is arranged on one side of the first connecting block 31, the first extending plate 33 is fixedly connected with the divided uppermost layer of the roller core 15, a second connecting hole is formed in the second connecting block 32, a second extending plate 34 is arranged on one side of the second connecting block 32, the second extending plate 34 is fixedly connected with the divided lowermost layer of the roller core 15, and the connecting bolt 1 penetrates through the first connecting hole and the second connecting hole to fixedly connect the first connecting block 31 and the second connecting block 32; the bearing set comprises a plurality of bearings, the inner sleeve set 13 comprises a plurality of inner sleeves, the outer sleeve set 14 comprises a plurality of outer sleeves, the inner sleeves and the bearings are arranged in the outer sleeves, the inner sleeves and the bearings are sleeved on the shaft core 15, and the inner sleeves are arranged on two sides of the bearings; first fixing device 4 is axial rotating device, and the top setting of axle core 15 is on first fixing device 4, and second fixing device 21 includes the bearing frame and sets up the self-aligning bearing on the bearing frame, and the terminal setting of axle core 15 is on self-aligning bearing.

The curvature-adjustable flattening roll provided by the invention can be used for adjusting the curvature of the flattening roll, is simple in structure, can be adjusted at will, is stepless, is beneficial to dealing with strips with different curvatures and flatness, and improves the processing quality of the strips.

According to the roll with adjustable bending degree, the roll core 15 is divided into a plurality of layers on one diameter from the top end of the roll core along the axial direction, the roll core is not completely divided into a plurality of layers, a distance is reserved between the division end point and the tail end of the roll core 15, namely, most of the roll core 15 is divided into a plurality of layers, and the rest part of the roll core is still an integral cylinder. The stepless bending can be realized, and the stepless adjustment of the bending direction and the curvature can be realized.

Wherein, first fixing device 4 is turbine worm speed reducer, rotates through turbine worm speed reducer and makes axle core 15 rotatory, can adjust crooked direction, is favorable to the extension of nip roll to be evened up. The self-aligning bearing in the second fixture 21 can accommodate the bending inclination of the shaft core 15.

Specifically, the roll core 15 is divided into three layers on one diameter from the top end thereof along the axial direction, and the two divided surfaces are arranged in parallel and perpendicular to one diameter. The first connecting block 31 is a cylinder, the second connecting block 32 is a semi-cylinder, and the second connecting block 32 abuts against the first extending plate 33. The first connecting block 31 is fixedly connected with the uppermost layer, the second connecting block 32 is fixedly connected with the lowermost layer, and the layer in the middle plays a supporting role, so that the flexibility can be adjusted at will, and stepless adjustment is realized.

Wherein, the screwing action of the connecting bolt 1 leads the two outer ends of the three split shaft cores 15 to be subjected to the same mutual acting force and opposite directions, and under the action of the force, the shaft cores 15 realize bending by matching with the action of the outer sleeve.

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 protecting sleeve 2 is sleeved on the first connecting block 31 and the second connecting block 32, the pointing ring 3 is sleeved on the shaft core 15, and the pointing ring 3 is fixed at the end of the first protecting sleeve 2 and located between the first protecting sleeve 2 and the first fixing device 4. The pointing ring 3 can identify the bending direction of the shaft core 15.

In order to further optimize the above scheme, a first blocking ring 5, a first blocking piece 6, a first copper sleeve 7, a first sealing blocking sleeve 8 and a first copper ring 9 are sequentially sleeved on a part, located between the first fixing device 4 and the outer sleeve group 14, of the shaft core 15, one end of the first blocking ring 5 abuts against the first fixing device 4, the other end of the first blocking ring abuts against the first blocking piece 6, the pipe wall of the first sealing blocking sleeve 8 is provided with a step, the first copper sleeve 7 is sleeved on a large-diameter part of the first sealing blocking sleeve 8, a small-diameter part of the first sealing blocking sleeve 8 is sleeved by the outer sleeve, a first sealing ring 28 is arranged between the small-diameter part of the first sealing blocking sleeve 8 and the first sealing ring 28, and the first copper ring 9 is sleeved on the small-diameter part of the first sealing blocking sleeve 8 and abuts.

In order to further optimize the above scheme, a top end extension pipe is arranged in the direction of the top end of the second fixing device 21 facing the top end of the shaft core 15, a second baffle 20, a second copper sleeve 19, a second sealing baffle sleeve 18 and a second copper ring 16 are sequentially sleeved on the portion, located between the second fixing device 21 and the outer sleeve group 14, of the shaft core 15, the top end extension pipe abuts against the second baffle 20, the pipe wall of the second sealing baffle sleeve 18 is provided with a step, the second copper sleeve 19 is sleeved on the large-diameter portion of the second sealing baffle sleeve 18, the small-diameter portion of the second sealing baffle sleeve 18 is sleeved by the outer sleeve, a second sealing ring 17 is arranged between the second sealing baffle sleeve 18 and the second copper ring 19 is sleeved on the small-diameter portion of the second sealing baffle sleeve 18 and abuts against the second sealing ring 17.

Wherein, the second baffle 20 is provided with a pointing sign. For example, an arrow indicates that the bending direction of the shaft core 15 can be identified.

In order to further optimize the above scheme, the second fixing device 21 is provided with a terminal extension pipe in the direction toward the terminal of the shaft core 15, the terminal end of the shaft core 15 is provided with external threads, the terminal 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 piece 25, a protective cover 26 and a fastening nut 27, the third baffle 23, the second baffle ring 24 and the wave spring piece 25 are all built in the protective cover 26, the fastening nut 27 is matched with the external threads, the terminal extension pipe is abutted to the second protective sleeve 22, and the second protective sleeve 22 is abutted to the third baffle 23 and the protective cover 26. Wherein the wave spring piece 25 can play a role of buffering when the shaft core 15 is bent and moves in the axial direction.

The roll with adjustable bending degree provided by the invention comprises a bearing set, an inner sleeve set 13 and an outer sleeve set 14, wherein the bearing set comprises a plurality of bearings, the inner sleeve set comprises a plurality of inner sleeves, and the outer sleeve set comprises a plurality of outer sleeves which are matched with each other for use. In specific implementation, except for the outer sleeve 10 at the top end of the shaft core and the outer sleeves at the tail ends, namely the two outer sleeves which are the outermost sleeves, a bearing is arranged in the middle of the inner hole of each of the other outer sleeves (such as the part indicated by the reference number 14 in fig. 2), the bearing can be a deep groove ball bearing, one inner sleeve is arranged in the inner hole of each outer sleeve on each side of the bearing, and two adjacent outer sleeves actually have two inner sleeves which are called a pair of inner sleeves. A small gap is formed between every two adjacent outer sleeves, so that the outer sleeves are bent after the shaft cores 15 are bent.

In the inner sleeve set, the first inner sleeve 11 positioned at the top end of the shaft core 15 is a single sleeve body, the first inner sleeve positioned at the tail end of the shaft core 15 is a single sleeve body, namely, two outermost outer sleeves are internally provided with two bearings, and a single inner sleeve is arranged between the two bearings. The second inner sleeve positioned at the top end of the shaft core 15 is a bendable spherical contact sleeve 12 and comprises a first sub-sleeve body 29 and a second sub-sleeve body 30, 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 positioned at the tail end of the shaft core 15 is a bendable spherical contact sleeve and comprises a third sub-sleeve body and a fourth sub-sleeve body, the butt joint surface of the third sub-sleeve body and the fourth sub-sleeve body is an arc surface,

the inner sleeves located between the second inner sleeve at the tip end of the shaft core 15 and the second inner sleeve at the tip end of the shaft core 15 are provided in pairs, that is, the above-mentioned eleven pairs of inner sleeves.

The curvature-adjustable flattening roller provided by the embodiment of the invention has the advantages of good operability and maintainability, low failure rate, simple structure, easiness in assembly and maintenance, long service life, simplicity in maintenance, wide popularization and practical value and universality.

In specific implementation, the flattening roll with adjustable bending degree provided by the embodiment of the invention has the advantages that the shaft core of the flattening roll is divided into three parts after a 45# steel is tempered. The outer sleeve is a thin steel sleeve.

The curvature-adjustable flattening roll provided by the embodiment of the invention can solve the problems that most of flattening rolls are single in curvature fixation, and the adjusting mechanisms of a small number of adjustable flattening rolls are complex and low in reliability. The bending roll with adjustable bending degree can extend and flatten the strips with different bending degrees, and the processing quality of the strips is improved.

The curvature adjustable flattening roll provided by the embodiment of the invention can enable the curvature of the flattening roll to be any. The processing method is beneficial to processing the strip with different bending degree and flatness, and the processing quality of the strip is improved. The reliability of extension leveling can be guaranteed, and the working efficiency of flattening is improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.