Roller box structure of non-ferrous metal wide strip and foil stretch bending straightener

Abstract

A roll box structure of a non-ferrous metal wide strip and foil stretch-bending straightener comprises a working roll, a middle roll and a supporting roll which sequentially abut against and are rotationally arranged. A plurality of columns of permanent magnets are embedded in the outer circumference of the middle roller; the middle roll adsorbs the working roll and the supporting roll through a plurality of rows of permanent magnets, natural bending deformation of the working roll under the action of gravity is overcome, meanwhile, the overall rigidity of a roll system in the roll box of the stretch-bending straightening machine is improved, and therefore vibration of the working roll during high-speed rotation is avoided, and high-speed production of the stretch-bending straightening machine is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of nonferrous metal strip and foil production equipment, and in particular to a roller box structure of a nonferrous metal wide strip and foil bending and straightening machine. Background Art

[0002] After the finished products are rolled, non-ferrous metals such as aluminum and aluminum alloys, copper and copper alloys, magnesium and magnesium alloys, titanium and titanium alloys, nickel-based high-temperature alloys and expanded precision alloy strips and foils generally need to be straightened by a bending and straightening machine to remove internal stress and improve the quality of the plate shape. However, when domestic bending and straightening machines are used to produce related strips and foils, the thickness of the metal foils is getting thinner and the width is getting wider, so the working rolls of the bending and straightening machines are getting thinner and longer, becoming slender rods. When the bending and straightening machine is working, the working rolls located on the upper part of the metal foil cannot be supported because the middle rolls are located on the upper side. The working rolls of the slender rods will naturally bend and deform under the action of gravity, causing them to vibrate easily when rotating. When the working speed of the stretch straightening machine is slow, the vibration problem of the working roll is not obvious. However, as the working speed of the stretch straightening machine increases, the working roll will resonate, resulting in vibration marks on the surface of the metal foil and even causing frequent belt breakage accidents. This seriously restricts the working speed of the stretch straightening machine and becomes a technical problem that must be overcome for high-speed production of the stretch straightening machine. Summary of the invention

[0003] In order to overcome the deficiencies in the background technology, the present invention discloses a roller box structure of a non-ferrous metal wide strip and foil bending and straightening machine, which is used to solve the problem of working roller vibration when the bending and straightening machine works at high speed.

[0004] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical scheme: a roller box structure of a non-ferrous metal wide strip and foil stretching and straightening machine, comprising a working roller, an intermediate roller, and a supporting roller which are arranged to rotate in sequence; a plurality of rows of permanent magnets are inlaid on the outer circumference of the intermediate roller; the intermediate roller absorbs the working roller and the supporting roller through a plurality of rows of permanent magnets, thereby overcoming the natural bending deformation of the working roller under the action of gravity and solving the vibration of the working roller when rotating at high speed.

[0005] Furthermore, the permanent magnet is semicircular and magnetized in the circumferential direction; in the same row of permanent magnets, two permanent magnets are fixedly arranged in the annular groove of the middle roller with their N poles and S poles facing each other.

[0006] Preferably, the permanent magnet is tile-shaped and magnetized circumferentially; a number of permanent magnets are evenly distributed in each column of permanent magnets; in the same column of permanent magnets, two adjacent permanent magnets are fixed in the sink of the middle roller with their N poles and S poles facing each other.

[0007] Furthermore, two adjacent rows of permanent magnets are arranged in a staggered manner.

[0008] Furthermore, the permanent magnets are arranged in an odd number of rows; the first row of permanent magnets is arranged in the axial middle of the middle roller, and the remaining rows of permanent magnets are symmetrically arranged on both sides of the first row of permanent magnets along the axial direction of the middle roller.

[0009] Preferably, the permanent magnets are arranged in an even number of rows; and the permanent magnets are symmetrically arranged along the axis of the middle roller.

[0010] Furthermore, an adhesive is provided between the permanent magnet and the intermediate roller.

[0011] Furthermore, the outer circumferential surface of the permanent magnet is at the same height as the outer circumferential surface of the intermediate roller, or the outer circumferential surface of the permanent magnet is lower than the outer circumferential surface of the intermediate roller.

[0012] Due to the adoption of the technical scheme as described above, the present invention has the following beneficial effects: a roller box structure of a non-ferrous metal foil drawing and straightening machine disclosed in the present invention includes a working roller, an intermediate roller, and a supporting roller which are arranged to rotate in sequence against each other; a plurality of rows of permanent magnets are inlaid on the outer circumference of the intermediate roller; the intermediate roller absorbs the working roller and the supporting roller through the plurality of rows of permanent magnets, thereby overcoming the natural bending deformation of the working roller under the action of gravity, and at the same time improving the overall stiffness of the roller system in the roller box of the drawing and straightening machine, thereby solving the vibration of the working roller when rotating at high speed, and realizing high-speed production of the drawing and straightening machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the multi-roller box bending straightening machine of Example 1; Figure 2 It is an enlarged schematic diagram of a part A of the multi-roller box bending straightening machine of the first embodiment; Figure 3 This is a schematic diagram of the appearance of the intermediate roller of the first embodiment; Figure 4 This is a schematic diagram of the structure decomposition of the intermediate roller of the first embodiment; Figure 5 This is a schematic diagram of the overall structure of a 23-roller tension and bending straightening machine of Example 2; Figure 6 It is an enlarged schematic diagram of a part B of the 23-roller tension and bending straightening machine of the second embodiment; Figure 7 This is a schematic diagram of the appearance of the intermediate roller of the second embodiment; Figure 8 This is a schematic diagram of the decomposition of the intermediate roller structure of the second embodiment.

[0014] In the figure: 1, lower roller box; 2, upper roller box; 2.1, working roller; 2.2, intermediate roller; 2.2.1, intermediate roller body; 2.2.1.1, intermediate roller ring groove; 2.2.1.2, intermediate roller sink groove; 2.2.2, semicircular ring permanent magnet; 2.2.3, tile-shaped permanent magnet; 2.3, supporting roller. DETAILED DESCRIPTION

[0015] The present invention can be explained in detail by the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. Embodiment 1:

[0016] See the instruction manual Figure 1-4 : Instruction manual attached Figure 1 The overall structure of a multi-roller box straightening machine is shown. In the straightening machine, three lower roller boxes 1 and two upper roller boxes 2 are arranged. The lower roller boxes 1 and the upper roller boxes 2 are arranged in a horizontal manner in an alternating manner. Figure 2 : Working rolls 2.1, intermediate rolls 2.2, and support rolls 2.3 are rotatably arranged in the lower roll box 1 and the upper roll box 2. The outer circumferences of the working rolls 2.1, the intermediate rolls 2.2, and the support rolls 2.3 are in contact with each other in sequence. The intermediate rolls 2.2 and the support rolls 2.3 provide support for the working rolls 2.1 to prevent the working rolls 2.1 from bending and deforming when subjected to radial forces during operation. In the upper roll box 2, since the intermediate rolls 2.2 and the support rolls 2.3 are located on the upper side of the working rolls 2.1, the intermediate rolls 2.2 and the support rolls 2.3 cannot provide support for the working rolls 2.1 in a natural state. Therefore, the working rolls 2.1 in the upper roll box 2 naturally bend downward under the action of gravity. shape; theoretically, during the working process of the tension bending straightening machine, after the tension of the metal foil overcomes the bending deformation of the working roll 2.1 in its natural state, the working roll 2.1 contacts the intermediate roll 2.2, and at this time the intermediate roll 2.2 and the support roll 2.3 provide support for the working roll 2.1; however, as the thickness of the metal foil becomes thinner and thinner, the tension during the tension bending straightening process becomes smaller and smaller, and the smaller tension can no longer completely overcome the bending deformation of the working roll 2.1, and the bent working roll 2.1 will vibrate during rotation. When the working roll 2.1 reaches resonance at high speed, there is a large amplitude, which will produce vibration marks on the surface of the metal foil, and even lead to frequent belt breakage accidents; See the instruction manual Figure 3 , 4:In this embodiment, the intermediate roller 2.2 in the upper roller box 2 includes an intermediate roller body 2.2.1 and a semicircular permanent magnet 2.2.2; three intermediate roller annular grooves 2.2.1.1 are arranged on the outer circumferential surface of the intermediate roller body 2.2.1, one of which is arranged in the axial middle of the intermediate roller body 2.2.1, and the other two intermediate roller annular grooves 2.2.1.1 are symmetrically arranged on both sides of the intermediate roller axial direction; each intermediate roller annular groove 2.2.1. 1 is provided with two semicircular ring-shaped permanent magnets 2.2.2, which are magnetized along the circumferential direction to form N poles and S poles at both ends of the radial direction; the semicircular ring-shaped permanent magnets 2.2.2 located in the same intermediate roller ring groove 2.2.1.1 are fixedly arranged in the intermediate roller ring groove 2.2.1.1 with the N pole and the S pole facing each other; the semicircular ring-shaped permanent magnets 2.2.2 in two adjacent intermediate roller ring grooves 2.2.1.1 are staggered by 90°; In order to further improve the connection strength between the semi-circular ring-shaped permanent magnet 2.2.2 and the intermediate roller body 2.2.1, an adhesive can be set in the intermediate roller ring groove 2.2.1.1. The adhesive still maintains a certain elasticity after curing, and the adhesive prevents the tile-shaped permanent magnet 2.2.3 from falling off when the intermediate roller 2.2 rotates at high speed; after the semi-circular ring-shaped permanent magnet 2.2.2 and the intermediate roller body 2.2.1 are assembled, the outer diameter of the intermediate roller body 2.2.1 is ensured to be equal to the outer diameter of the semi-circular ring-shaped permanent magnet 2.2.2 through grinding; the structural design of setting the adhesive and the outer cylindrical surface of the permanent magnet and the outer cylindrical surface of the intermediate roller at the same height can prevent the surface of the working roller 2.1 from being marked when the bending straightening machine works for a long time, and at the same time, when it is used for bending straightening of thick non-ferrous metal foil, the elasticity of the adhesive after curing can also be used to avoid the permanent magnet from being broken due to excessive force on the surface of the intermediate roller; In addition, a structural design can be adopted in which the outer circumference of the semi-circular permanent magnet 2.2.2 is 0.1-0.3 mm lower than the outer circumference of the intermediate roller body 2.2.1 after assembly, so as to prevent the permanent magnet from being broken due to excessive force on the surface of the intermediate roller when used for stretching, bending and straightening of thicker non-ferrous metal strips. This structural design can eliminate the grinding process after the semi-circular permanent magnet 2.2.2 and the intermediate roller body 2.2.1 are assembled.

[0017] When the multi-roller box straightening machine of this embodiment is working, the intermediate roller 2.2 located in the upper roller box 2 attracts the working roller 2.1 and the supporting roller 2.3 through three rows of semicircular ring-shaped permanent magnets 2.2.2. The intermediate roller 2.2 and the supporting roller 2.3 are used to overcome the natural bending deformation of the working roller 2.1 in the upper roller box 2 under the action of gravity. At the same time, the working roller 2.1, the intermediate roller 2.2 and the supporting roller 2.3 in the upper roller box 2 have higher overall stiffness, thereby solving the vibration problem of the working roller when rotating at high speed, and realizing high-speed production of the straightening machine. Embodiment 2:

[0018] See the instruction manual Figure 5-8 : Instruction manual attached Figure 5 , 6 The overall structure of a 23-roller straightening machine and an enlarged schematic diagram of a local A structure are shown; in the 23-roller straightening machine, a lower roll box 1 and an upper roll box 2 are provided; working rolls 2.1, intermediate rolls 2.2, and support rolls 2.3 are rotatably provided in the lower roll box 1 and the upper roll box 2 (the number of working rolls 2.1 in the lower roll box 1 is 12, and the number of working rolls 2.1 in the upper roll box 2 is 11), and the outer circumferences of the working rolls 2.1, intermediate rolls 2.2, and support rolls 2.3 are in contact with each other in sequence; See the instruction manual Figure 7 , 8 In this embodiment, the intermediate roller 2.2 in the upper roller box 2 includes an intermediate roller body 2.2.1 and a tile-shaped permanent magnet 2.2.3; four rows of intermediate roller sinking grooves 2.2.1.2 are arranged on the outer circumferential surface of the intermediate roller body 2.2.1, and the four rows of intermediate roller sinking grooves 2.2.1.2 are symmetrically arranged along the axis of the intermediate roller body 2.2.1; each row of intermediate roller sinking grooves 2.2.1.2 is provided with four, which are evenly distributed around the axis of the intermediate roller body 2.2.1 and are not connected to each other; each intermediate roller sinking groove A tile-shaped permanent magnet 2.2.3 is arranged in the slot 2.2.1.2. The tile-shaped permanent magnet 2.2.3 is magnetized along the circumferential direction to form an N pole and an S pole at both ends of the radial direction. Two adjacent tile-shaped permanent magnets 2.2.3 in the same row of intermediate roller sinking slots 2.2.1.2 are fixedly arranged in the intermediate roller ring slot 2.2.1.1 with the N pole and the S pole facing each other. The tile-shaped permanent magnets 2.2.3 in the intermediate roller sinking slots 2.2.1.2 in two adjacent rows are staggered by 45 degrees. In order to further improve the connection strength between the tile-shaped permanent magnet 2.2.3 and the intermediate roller body 2.2.1, an adhesive may be provided in the intermediate roller sink 2.2.1.2 to prevent the tile-shaped permanent magnet 2.2.3 from falling off when the intermediate roller 2.2 rotates at high speed; In this embodiment, after the tile-shaped permanent magnet 2.2.3 and the intermediate roller body 2.2.1 are assembled, grinding is performed to ensure that the outer diameter of the intermediate roller body 2.2.1 is equal to the outer diameter of the tile-shaped permanent magnet 2.2.3. The structural design in which the outer cylindrical surface of the permanent magnet and the outer cylindrical surface of the intermediate roller are at the same height is used for the bending and straightening of thinner non-ferrous metal foils to prevent marks from being generated on the surface of the working roller 2.1 when the bending and straightening machine works for a long time.

[0019] When the 23-roller straightening machine of this embodiment is working, the intermediate roller 2.2 located in the upper roller box 2 attracts the working roller 2.1 and the supporting roller 2.3 through four rows of tile-shaped permanent magnets 2.2.3. The intermediate roller 2.2 and the supporting roller 2.3 are used to overcome the natural bending deformation of the working roller 2.1 in the upper roller box 2 under the action of gravity. At the same time, the working roller 2.1, the intermediate roller 2.2 and the supporting roller 2.3 in the upper roller box 2 have higher overall stiffness, thereby solving the vibration problem of the working roller during high-speed rotation and realizing high-speed production of the straightening machine.

[0020] The various technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, it should be understood that the present invention is intended to protect all changes and improvements of all embodiments within the scope of the present concept and invention.

[0021] Parts of the present invention not described in detail are prior art.

Claims

1. A roller box structure for a non-ferrous metal wide strip and foil bending and straightening machine, comprising a working roller, an intermediate roller, and a supporting roller which are arranged to rotate in sequence; the characteristics are: Several rows of permanent magnets are embedded on the outer circumference of the intermediate roller; the intermediate roller adsorbs the working roller and the supporting roller through several rows of permanent magnets, overcomes the natural bending deformation of the working roller under the action of gravity, and solves the vibration of the working roller when it rotates at high speed.

2. The roller box structure of the non-ferrous metal wide strip and foil bending and straightening machine according to claim 1 is characterized by: The permanent magnet is in a semicircular ring shape and is magnetized along the circumferential direction; in the same row of permanent magnets, two permanent magnets are fixedly arranged in the annular groove of the middle roller with the N poles and the S poles facing each other.

3. The roller box structure of the non-ferrous metal wide strip and foil bending and straightening machine according to claim 1 is characterized by: The permanent magnets are tile-shaped and magnetized circumferentially; a number of permanent magnets are evenly distributed in each column; in the same column, two adjacent permanent magnets are fixed in the sink of the middle roller with their N poles and S poles facing each other.

4. The roller box structure of the non-ferrous metal wide strip and foil bending and straightening machine according to claim 2 or 3 is characterized in that: Two adjacent rows of permanent magnets are arranged in a staggered manner.

5. The roller box structure of the non-ferrous metal wide strip and foil bending and straightening machine according to claim 4 is characterized by: The permanent magnets are arranged in odd number of rows; the first row of permanent magnets is arranged in the axial middle of the middle roller, and the remaining rows of permanent magnets are symmetrically arranged on both sides of the first row of permanent magnets along the axial direction of the middle roller.

6. The roller box structure of the non-ferrous metal wide strip and foil bending and straightening machine according to claim 4 is characterized by: The permanent magnets are arranged in an even number of rows; the permanent magnets are symmetrically arranged along the axis of the middle roller.

7. The roller box structure of the non-ferrous metal wide strip and foil bending and straightening machine according to claim 1 is characterized by: An adhesive is arranged between the permanent magnet and the intermediate roller.

8. The roller box structure of the nonferrous metal wide strip and foil bending and straightening machine according to any one of claims 1 to 7, characterized in that: The outer circumferential surface of the permanent magnet is at the same height as the outer circumferential surface of the intermediate roller, or the outer circumferential surface of the permanent magnet is lower than the outer circumferential surface of the intermediate roller.

Images