Rectangular steel correction device and method

Abstract

The invention relates to the technical field of profile roll bending forming, and provides a rectangular steel correction device and method, the rectangular steel correction device is used for correcting trapezoidal defective products appearing during rectangular steel forming, the rectangular steel correction device comprises two vertical roll sets used for extruding the waists of the trapezoidal defective products, and each vertical roll set comprises two correction rolls arranged in the vertical direction; the two correction rollers are connected with adjusting mechanisms which are used for adjusting the axis distance of the corresponding correction rollers in the two vertical roller sets according to the up-down width of the waist of the trapezoidal defective product. According to the method, correction of the trapezoidal inferior-quality products does not need to repeat the manufacturing process, correction time is shortened, correction of the trapezoidal inferior-quality products does not need to occupy a cold bending unit for normal production, influence on production efficiency is avoided, and the method can adapt to the trapezoidal inferior-quality products with different deformation degrees.

Description

Technical Field

[0001] The invention relates to the technical field of profile roll bending, and in particular to a rectangular steel correction device and method. Background Art

[0002] Rectangular steel is a commonly used profile. Due to its excellent properties such as structural stability, high rigidity and light weight, it is widely used in various fields such as construction, bridges, and machinery manufacturing.

[0003] Rectangular steel is mainly manufactured by continuous roll bending. During the forming process, due to process parameters such as roller position, pressure reduction, and roll bending speed, the cross-section of the rectangular steel may be deformed into a trapezoidal structure with a small top and a large bottom (or a large top and a small bottom) (hereinafter referred to as trapezoidal defective products). When this happens, since there is no special correction device, the current correction method is to re-correct each process parameter and then re-process the trapezoidal defective products according to the process flow, which is time-consuming and affects production efficiency. Summary of the invention

[0004] The object of the present invention is to provide a rectangular steel correction device and method to solve the above-mentioned defects of the existing correction method.

[0005] The present invention is achieved through the following technical solutions:

[0006] A rectangular steel correction device is used to correct trapezoidal defective products that appear when rectangular steel is formed, including two vertical roller groups for squeezing the waist of the trapezoidal defective products, each vertical roller group includes two correction rollers arranged in the up and down directions, and the two correction rollers are both connected with an adjustment mechanism for adjusting the axial distance between the corresponding correction rollers in the two vertical roller groups according to the up and down width of the waist of the trapezoidal defective products.

[0007] Optionally, the adjustment mechanism comprises:

[0008] A slide, on which a pin is fixedly arranged, and a correction roller is rotatably arranged on the pin;

[0009] An installation box, in which the slide is slidably disposed; and

[0010] The driving assembly is connected to the slide and is used to drive the slide to slide in the installation box.

[0011] Optionally, the driving assembly comprises:

[0012] A sliding screw rod, one end of which is fixedly connected to the slide;

[0013] A worm wheel is rotatably disposed in the mounting box and its center is threadably engaged with the sliding lead screw; and

[0014] The worm is rotatably arranged in the mounting box and meshes with the turbine so that the rotation of the worm drives the worm wheel to rotate.

[0015] Optionally, one end of the pin is fixedly connected to the slide, and the other end of the pin extends out of the installation box. The correction roller is rotatably arranged at the end of the pin extending out of the installation box so that one end of the correction roller is exposed outside the installation box, and the outer ends of the two correction rollers are against each other.

[0016] Optionally, the installation box is connected to a lifting mechanism for driving it to move up and down.

[0017] Optionally, the lifting mechanism includes two adjusting screws that can rotate synchronously, the adjusting screws are arranged on both sides of the installation box, and the installation boxes of the adjustment mechanisms corresponding to the two correction rollers are both threadedly matched with the adjusting screws, and the threads at the upper and lower ends of the adjusting screws have opposite rotation directions.

[0018] The present invention also provides a rectangular steel correction method, which uses any of the rectangular steel correction devices described above to adjust the axial distance between the corresponding correction rollers in the two vertical roller groups according to the upper and lower widths of the waist of the trapezoidal defective product, so that after the trapezoidal defective product is rolled by the rectangular steel correction device, the cross-section of the trapezoidal defective product can be corrected into a rectangular structure.

[0019] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0020] 1. The present invention proposes a method that can be specifically used to correct the situation where trapezoidal defective products appear during the forming of rectangular steel products, so that the correction of trapezoidal defective products does not need to repeat the manufacturing process, reducing the correction time, and the correction of trapezoidal defective products does not need to occupy the cold bending unit of normal production, avoiding affecting the production efficiency.

[0021] 2. In the present invention, each correction roller in the two vertical roller groups is connected with an adjustment mechanism, which can adjust the axial distance of the corresponding correction rollers in the two vertical roller groups according to the upper and lower widths of the waist of the trapezoidal defective products, thereby adapting to trapezoidal defective products with different deformation degrees. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of a trapezoidal defective product;

[0023] Figure 2 It is the main sectional view of the vertical roller assembly;

[0024] Figure 3 for Figure 1 AA section view;

[0025] Figure 4 It is the left view of the vertical roller group;

[0026] Figure numerals: 100 - vertical roller group, 101 - correction roller, 102 - slide, 103 - installation box, 104 - sliding screw, 105 - worm wheel, 106 - worm, 107 - pin shaft, 108 - adjustment screw, 200 - trapezoidal defective product. DETAILED DESCRIPTION

[0027] Example 1

[0028] The present embodiment provides a rectangular steel correction device for correcting trapezoidal defective products 200 that appear when rectangular steel is formed, so that the correction of the trapezoidal defective products 200 does not require re-manufacturing process, thus reducing the correction time, and the correction of the trapezoidal defective products 200 does not require occupying the normal production cold bending unit, thus avoiding affecting production efficiency.

[0029] The correction device includes two vertical roller groups 100 for squeezing the waist of the trapezoidal defective product 200. Each vertical roller group 100 includes two correction rollers 101 arranged in the up and down directions. The two correction rollers 101 are both connected with an adjustment mechanism, which can adjust the axial distance between the corresponding correction rollers 101 in the two vertical roller groups 100 according to the up and down width of the waist of the trapezoidal defective product 200, so as to adapt to different deformation degrees.

[0030] As an option, the adjustment mechanism of this embodiment includes a slide 102, an installation box 103 and a drive assembly. The slide 102 can be slidably arranged in the installation box 103. A pin shaft 107 is fixedly arranged on the slide 102. The correction roller 101 is rotatably arranged on the pin shaft 107. The drive assembly is connected to the slide 102 and is used for driving the slide 102 to slide in the installation box 103, so as to adjust the position of the correction roller 101.

[0031] Furthermore, the driving assembly of this embodiment includes a sliding screw 104, a worm wheel 105 and a worm 106. One end of the sliding screw 104 is fixedly connected to the slide 102. The worm wheel 105 is rotatably arranged in the installation box 103 and the center is matched with the sliding screw 104 through a thread. The worm 106 is rotatably arranged in the installation box 103 and meshes with the turbine. In practical applications, the worm 106 should be connected to a power element (such as a motor) to drive its rotation, or it can be driven manually. It should be understood that the slide 102 is slidably arranged in the installation box 103, and the slide 102 cannot rotate. After the sliding screw 104 is fixedly connected to the slide 102, the sliding screw 104 cannot rotate and can only move axially. In this way, when the worm 106 rotates, it drives the worm wheel 105 to rotate, and the rotation of the turbine drives the sliding screw 104 to move axially, thereby driving the slide 102 to slide, thereby realizing the position adjustment of the correction roller 101.

[0032] It is worth noting that the drive assembly of this embodiment adopts a combination structure of a worm wheel 105, a worm 106 and a sliding screw 104, which can correct the self-locking property of the roller 101 after the position adjustment, and has high reliability. In other embodiments, the drive assembly can of course also adopt other structures that can make the slide 102 slide.

[0033] In this embodiment, one end of the pin 107 is fixedly connected to the carriage 102. To ensure the stability of the connection structure, at least two places on the carriage 102 are in contact with the pin 107, or the contact length is lengthened; the other end of the pin 107 extends out of the installation box 103, and the correction roller 101 is rotatably arranged at the end of the pin 107 extending out of the installation box 103, so that one end of the correction roller 101 is exposed outside the installation box 103, and the outer ends of the two correction rollers 101 are against each other. In actual application, the two correction rollers 101 and their corresponding adjustment structures are symmetrically arranged about a plane perpendicular to the axis of the correction roller 101, and the outer ends of the two correction rollers 101 are against each other, so that the two correction rollers 101 have zero gap in the axial direction.

[0034] On the basis of the above, since it is sometimes necessary to correct the upper and lower ends of the trapezoidal defective product 200, the present embodiment has been improved on the basis of the above. Specifically, the installation box 103 is connected with a lifting mechanism for driving it to move up and down. As an option, the lifting mechanism of this embodiment includes two adjusting screws 108 that can rotate synchronously. The adjusting screws 108 are arranged on both sides of the installation box 103, and the two correction rollers 101 corresponding to the installation boxes 103 of the adjustment mechanism are both threadedly matched with the adjusting screws 108. In actual applications, both ends of the adjusting screw 108 are rotatably connected to the frame (not shown in the figure), and the two adjusting screws 108 are connected through a transmission structure (not shown in the figure, such as sprocket drive, belt drive, etc.) to achieve synchronous rotation, and one of the adjusting screws 108 is connected to a power element (not shown in the figure, such as a motor) to drive it to rotate. Since the threads of the upper and lower ends of the adjusting screw 108 rotate in opposite directions, when the adjusting screw 108 rotates, the two mounting boxes 103 in the same vertical roller group 100 can be moved up and down, so that the two correction rollers 101 are separated from each other along the axial direction, thereby only rolling the upper and lower ends of the trapezoidal defective product 200.

[0035] Example 2

[0036] This embodiment provides a rectangular steel correction method, using the rectangular steel correction device provided in the first embodiment, according to the upper and lower widths of the waist of the trapezoidal defective product 200, the axial distance between the corresponding correction rollers 101 in the two vertical roller groups 100 is adjusted, so that after the trapezoidal defective product 200 is rolled by the rectangular steel correction device, the cross section of the trapezoidal defective product 200 can be corrected into a rectangular structure. It should be understood that in actual applications, the upper and lower edges of the trapezoidal defective product 200 are limited in position by guide rollers (or limit rollers). In addition, multiple rectangular steel correction devices can be set in actual applications, that is, multiple trapezoidal defective products 200 can be corrected by multiple deformations.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rectangular steel correction device, used to correct trapezoidal defective products that appear when rectangular steel is formed, characterized in that: It includes two vertical roller groups for extruding the waist of trapezoidal defective products. Each vertical roller group includes two correction rollers arranged in the up and down directions. The two correction rollers are connected with an adjustment mechanism for adjusting the axial distance between the corresponding correction rollers in the two vertical roller groups according to the up and down width of the waist of the trapezoidal defective products.

2. The rectangular steel material correction device according to claim 1, characterized in that: The regulating mechanism comprises: A slide, on which a pin is fixedly arranged, and a correction roller is rotatably arranged on the pin; An installation box, in which the slide is slidably disposed; and The driving assembly is connected to the slide and is used to drive the slide to slide in the installation box.

3. The rectangular steel material correction device according to claim 2, characterized in that: The drive assembly comprises: A sliding screw rod, one end of which is fixedly connected to the slide; A worm wheel is rotatably disposed in the mounting box and its center is threadably engaged with the sliding lead screw; and The worm is rotatably arranged in the mounting box and meshes with the turbine so that the rotation of the worm drives the worm wheel to rotate.

4. The rectangular steel material correction device according to claim 2, characterized in that: One end of the pin is fixedly connected to the slide, and the other end of the pin extends out of the installation box. The correction roller is rotatably arranged on the end of the pin extending out of the installation box so that one end of the correction roller is exposed outside the installation box, and the outer ends of the two correction rollers are against each other.

5. The rectangular steel material correction device according to any one of claims 2 to 4, characterized in that: The installation box is connected with a lifting mechanism for driving it to move up and down.

6. The rectangular steel material correction device according to claim 5, characterized in that: The lifting mechanism includes two adjusting screws that can rotate synchronously. The adjusting screws are arranged on both sides of the installation box. The installation boxes of the two correction rollers corresponding to the adjustment mechanism are both threadedly matched with the adjusting screws, and the threads at the upper and lower ends of the adjusting screws rotate in opposite directions.

7. A rectangular steel correction method, using the rectangular steel correction device according to any one of claims 1 to 6, characterized in that: According to the upper and lower widths of the waist of the trapezoidal defective products, the axial distance between the corresponding correction rollers in the two vertical roller groups is adjusted, so that the cross-section of the trapezoidal defective products can be corrected into a rectangular structure after being rolled by the rectangular steel correction device.

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