Roll system of a plate leveling machine with different roller diameters for integral beams

Abstract

The present invention relates to a roll system of an integral beam plate leveling machine with different roll diameters, which includes an upper roll system and a lower roll system. The upper roll system includes upper working rolls and upper supporting rolls, and the lower roll system includes lower supporting rolls and lower working rolls. The axes of the upper working rolls are located in the same plane. The diameters of the first upper working roll to the fourth upper working roll from the inlet gradually increase, and the diameters of the fourth upper working roll to the last upper working roll at the outlet are equal. The diameters of the lower working rolls are the same and their axes are in the same plane. Each upper working roll is in tangential contact with two upper supporting rolls, and the diameters of the upper supporting rolls are equal. The axial heights of the first upper supporting roll at the inlet and the second upper supporting roll at the inlet are equal, and the axial heights of the first upper supporting roll at the end of the outlet and the second upper supporting roll at the end of the outlet are equal. The beneficial effects of the present invention are as follows: it can achieve the step-by-step biting of the plate, obtain a greater biting and feeding force, achieve a greater bending amount of the plate, and improve the feeding and leveling effect of plates with a high yield limit and a large original flatness deviation.

Description

1. Technical field

[0002] The invention belongs to the technical field of metal sheet forming and processing equipment, and particularly relates to a roller system of a sheet metal leveling machine with integral beams and different roller diameters. (II) Background technology

[0004] The sheet metal leveling machine uses a continuously rotating working roller with a certain roller gap shape to drive the sheet metal to achieve a bending degree from large to small in the roller gap, so that the residual bending of the sheet metal after rebounding is consistent and close to zero to achieve the purpose of sheet metal leveling. The roller diameter of the integral beam sheet metal leveling machine can be made smaller, and the structure is compact, which is suitable for the leveling of thinner sheets. When leveling sheets with large original unevenness or large yield limit, a large bending amount needs to be achieved at the inlet to ensure that the sheet metal obtains a larger plastic deformation section in the thickness after the reverse bending to achieve sheet metal leveling. However, due to the small roller gap on the inlet side, the bite friction force provided by the working roller is less than the reverse thrust generated by the head of the workpiece hitting the roller, resulting in the inability to feed the sheet metal, making it difficult for the integral beam sheet metal leveling machine to level high yield limit sheets and sheets with large original unevenness. The existing patent application number is ZL201922365168.3, and the patent name is a patent for a sheet metal leveling machine with different roller spacing. It describes a monotonous sheet metal leveling machine with different roller spacing. Through the scientific and reasonable rearrangement design of the working roller system, the size of the whole machine is reduced, the safety factor of the straightening roller is reduced, the empty straightening area of ​​the leveling machine is reduced, and the straightening quality of the sheet metal is improved. However, the sheet metal leveling machine with different roller spacing described in this patent is a monotonous structure, each upper roller is equipped with a separate height adjustment device, the roller spacing cannot be very small, and the roller diameter is often large, which is not suitable for the leveling process of thin sheets. (III) Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, the present invention provides a roller system of a plate leveling machine with an integral beam and different roller diameters, which can be used for leveling thin plates with high yield limit and thin plates with relatively large original unevenness.

[0007] The present invention is achieved through the following technical solutions:

[0008] A roller system of an integral beam different-roller-diameter plate leveling machine comprises an upper roller system and a lower roller system, wherein the upper roller system comprises an upper working roller and an upper supporting roller, and the lower roller system comprises a lower supporting roller and a lower working roller, and is characterized in that: the axes of the upper working rollers are located in the same plane, the diameters increase successively from the first upper working roller at the entrance to the fourth upper working roller, the diameters from the fourth upper working roller to the end upper working roller at the exit are equal, the lower working rollers have the same diameters and their axes are located in the same plane, each upper working roller is in tangential contact with two upper supporting rollers, the upper supporting rollers have the same diameters, the first upper supporting roller at the entrance is equal to the second upper supporting roller at the entrance, and the first upper supporting roller at the end of the exit is equal to the second upper supporting roller at the end of the exit.

[0009] The upper supporting rollers are arranged in a staggered manner and installed on the upper supporting roller seats.

[0010] The lower working rollers are in tangential contact with two lower supporting rollers. The axes of the lower supporting rollers are in the same plane, and the lower supporting rollers are arranged in a staggered manner and installed on the lower supporting roller seats.

[0011] The diameters of the lower supporting rollers are equal.

[0012] The diameter of the lower working rollers is equal to the diameter of the upper working rollers at the end of the outlet.

[0013] The beneficial effects of the present invention are as follows: Through the roll gap form with the entrance roll gap decreasing from large to small and the reduction gradually increasing, the sheet metal mainly bites at the entrance of the roll system, and the reduction is gradually increased during the biting process, so that the sheet metal reaches the required bending amount for deformation; it can realize the step-by-step biting of the sheet metal, obtain a greater biting and feeding force, realize a greater bending amount of the sheet metal, and improve the feeding and leveling effect of sheet metals with high yield limit and large original flatness. (IV) BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Att Figure 1 is a schematic structural diagram of the present invention;

[0017] Att Figure 2 is a schematic structural diagram of the prior art;

[0018] In the figure, 1 is the upper roll system, 2 is the lower roll system, 3 is the upper working roll, 4 is the upper supporting roll, 5 is the lower supporting roll, 6 is the lower working roll, 7 is the upper supporting roller seat, 8 is the lower supporting roller seat, and 9 is the sheet metal. (V) SPECIFIC EMBODIMENTS

[0020] The accompanying drawings are a specific embodiment of the present invention. This embodiment includes an upper roll system 1 and a lower roll system 2. The upper roll system 1 includes an upper working roll 3 and an upper supporting roll 4. The lower roll system 2 includes a lower supporting roll 5 and a lower working roll 6. The axes of the upper working rolls 3 are in the same plane. The diameters of the first upper working roll 3 to the fourth upper working roll 3 from the entrance increase in sequence, and the diameters of the fourth upper working roll 3 to the upper working roll 3 at the end of the outlet are equal. The diameters of the lower working rolls 6 are the same and their axes are in the same plane. Each upper working roll 3 is in tangential contact with two upper supporting rolls 4. The diameters of the upper supporting rolls 4 are equal. The axial center heights of the first upper supporting roll 4 and the second upper supporting roll 4 at the entrance are equal, and the axial center heights of the first upper supporting roll 4 and the second upper supporting roll 4 at the end of the outlet are equal. The upper supporting rolls 4 are arranged in a staggered manner and installed on the upper supporting roller seats 7. The lower working rolls 6 are in tangential contact with two lower supporting rolls 5. The axes of the lower supporting rolls 5 are in the same plane. The lower supporting rolls 5 are arranged in a staggered manner and installed on the lower supporting roller seats 8. The diameters of the lower supporting rolls 5 are equal. The diameter of the lower working rolls 6 is equal to the diameter of the upper working rolls 3 at the end of the outlet.

[0021] Adopt the roll system of the integral beam and different-roller-diameter sheet flattening machine of the present invention. In the lower roll system 2, all the lower working rolls 6 have the same diameter, and their axes are in the same working plane. The upper generatrices of all the lower working rolls 6 are in the same plane, forming the lower part of the roll gap that constitutes the sheet flattening roll gap. Each lower working roll 6 is in tangential contact with two lower supporting rolls 5 on the same lower supporting roll seat 8 to provide a supporting force for the lower working roll 6. The axes of all the lower supporting rolls 5 are in the same plane. The lower supporting rolls 5 are staggeredly arranged and installed on the lower supporting roll seats 8, and the number of lower supporting rolls 5 on each lower supporting roll seat 8 is one more than the number of lower working rolls 6. In the upper roll system 1, the axes of all the upper working rolls 3 are in the same plane. The diameter of the first upper working roll 3 at the inlet is smaller than that of the second upper working roll 3 at the inlet. The diameter of the second upper working roll 3 at the inlet is smaller than that of the third upper working roll 3 at the inlet. The diameter of the third upper working roll 3 at the inlet is smaller than that of the fourth upper working roll 3 at the inlet. The diameters of the fourth upper working roll 3 at the inlet to the first upper working roll 3 at the outlet end are the same and are the same as the diameters of all the lower working rolls 6. The lower generatrices of the first upper working roll 3, the second upper working roll 3, the third upper working roll 3, and the fourth upper working roll 3 at the inlet form a roll gap with the lower part of the roll gap, where the roll gap gradually decreases from large to small and the downward pressure gradually increases, achieving a greater bending amount of the sheet, and solving the problem that sheets with a high yield limit and large original flatness cannot achieve large reduction feeding. The lower generatrices of the remaining upper working rolls 3 form a straightening roll gap with the lower plane of the roll gap, reducing the difference in the residual bending degree after springback and making it tend to be consistent, achieving the flattening effect. Each upper working roll 3 is in tangential contact with two upper supporting rolls 4 on the same upper supporting roll seat 7. All the upper supporting rolls 4 have the same diameter, and the axial center positions of the two outermost upper supporting rolls 4 are respectively at the same height as the axial center heights of the second upper supporting rolls 4 at both ends. The upper supporting rolls 4 are staggeredly arranged and installed on the upper supporting roll seats 7, and the number of upper supporting rolls 4 on each upper supporting roll seat 7 is one more than the number of upper working rolls 3. The first four upper working rolls 3 achieve the gradual superposition of the sheet biting and feeding forces, obtaining a greater biting and feeding force, thereby achieving a greater bending amount of the sheet and realizing the feeding process of sheets with a higher yield limit. Similarly, for sheets with a large original flatness, it is difficult to feed using the roll gap form of traditional models. Applying the roll gap structure of the present invention, the feeding method of gradually increasing the reduction amount and superposing the feeding force is more convenient for realizing the feeding process of sheets that require a large bending amount.

[0022] Such as Figure 1As shown, when the lower generatrices of the first upper work roll 3, the second upper work roll 3, the third upper work roll 3, and the fourth upper work roll 3 at the entrance are in the same plane, a plane is formed, which is now called working plane one; an angle C is formed between working plane one and the plane where the lower part of the roll gap is located. The lower generatrices of the fourth upper work roll 3, the fifth upper work roll 3, the sixth upper work roll 3 to the last upper work roll 3 at the entrance form a plane called working plane two; an angle B is formed between working plane two and the plane where the lower part of the roll gap is located. A certain included angle is formed between working plane one and working plane two, and this included angle is an obtuse angle less than 180°, and the entire straightening plate roll gap forms a V-shaped roll gap.

Claims

1. A roll system of a plate leveling machine with different roll diameters for integral beams, comprising an upper roll system (1) and a lower roll system (2). The upper roll system (1) includes upper working rolls (3) and upper supporting rolls (4), and the lower roll system (2) includes lower supporting rolls (5) and lower working rolls (6). It is characterized in that: The axes of the upper working rolls (3) are located in the same plane. The diameters of the upper working rolls (3) increase successively from the first upper working roll (3) at the entrance to the fourth upper working roll (3). The diameters of the upper working rolls (3) from the fourth upper working roll (3) to the last upper working roll (3) at the exit are equal. The diameters of the lower working rolls (6) are the same and their axes are in the same plane. Each upper working roll (3) is in tangential contact with two upper supporting rolls (4). The diameters of the upper supporting rolls (4) are equal. The axial heights of the first upper supporting roll (4) at the entrance and the second upper supporting roll (4) at the entrance are equal. The axial heights of the first upper supporting roll (4) at the exit end and the second upper supporting roll (4) at the exit end are equal. The upper supporting rolls (4) are arranged staggeredly on the upper supporting roll seats (7). The lower working rolls (6) are in tangential contact with two lower supporting rolls (5). The axes of the lower supporting rolls (5) are in the same plane. The lower supporting rolls (5) are arranged staggeredly on the lower supporting roll seats (8). The diameters of the lower supporting rolls (5) are equal. The diameter of the lower working roll (6) is equal to the diameter of the last upper working roll (3) at the exit end.

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