Purging device for reducing pressing-in of iron oxide at shearing edge part of steel plate

Abstract

The invention discloses a purging device for reducing pressing-in of iron oxide at the shearing edge of a steel plate, and relates to the technical field of steel plate shearing machining. The compressed air injection assembly is fixedly mounted on the mounting seat, the compressed air injection assembly comprises a main pipe body and a branch pipe fixedly mounted on the main pipe body, one end of the main pipe body is communicated with an air source end, the other end of the main pipe body is closed, the branch pipe is communicated with the main pipe body, and the compressed air injection assembly is fixedly mounted on the main pipe body. The air outlet ends of the branch pipes all face the steel plate located in the pinch roll. According to the method, the oxide scale on the edge of the steel plate is removed through blowing, the phenomenon that the oxide scale is pressed into the edge of the steel plate due to pressure application of the pinch roll in the steel plate shearing production process is prevented, and the oxide scale pressed into the edge of the surface is remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate shearing processing, in particular to a purging device for reducing the pressure of iron oxide on the sheared edge of a steel plate. Background Art

[0002] In the production process of steel plates, due to the influence of factors such as the alloy composition, rolling and cooling process of the steel plates, surface oxide scale is often produced, which will cause the oxide scale to be pressed into the surface of the steel plate under the mechanical force of the steel plate production and processing equipment, resulting in surface quality problems such as pits and indentations. This not only seriously affects the delivery quality of the steel plate, but also is extremely detrimental to the performance and applicability of the steel plate.

[0003] At present, domestic steel enterprises focus more on the control of scale oxide on rolling descaling and cooling, and control the generation of scale oxide by changing the parameters of rolling temperature and descaling pass, but lack sufficient attention to the generation and indentation of secondary scale oxide in the subsequent process, especially in the steel plate shearing process. Among them, the scale oxide indentation generated in the shearing process is mainly caused by the edge indentation and pits caused by the use of pinch rollers to transport the steel plate. In addition, since the scale oxide indentation generated in the shearing process is shallow, it is usually solved by grinding after delivery. Although it meets the delivery surface grade standard, it is not only cumbersome to operate, but also seriously affects work efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a purging device for reducing the pressure of iron oxide on the sheared edge of a steel plate.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: A purging device for reducing the pressure of iron oxide on the shear edge of a steel plate, comprising: A mounting seat, fixedly mounted on the side of the pinch roller; A compressed air injection assembly is fixedly mounted on the mounting seat, and comprises a main pipe and a branch pipe fixedly mounted on the main pipe. One end of the main pipe is connected to the air source end, and the other end of the main pipe is closed. The branch pipe is connected to the main pipe, and the air outlet ends of the branch pipes are both directed toward the steel plate located in the clamping roller.

[0006] As a preferred solution of the purging device for reducing the pressure of iron oxide on the sheared edge of the steel plate described in the present invention, the mounting seat includes a fixing plate fixedly mounted on the clamping roller coupling guard and a mounting bracket fixedly mounted on the fixing plate, and the main pipe is fixedly mounted on the mounting bracket.

[0007] As a preferred solution of the purging device for reducing the intrusion of iron oxide into the sheared edge of the steel plate according to the present invention, the axis of the main pipe is parallel to the axis of the pinch roller.

[0008] As a preferred solution of the purging device for reducing the iron oxide pressure at the shear edge of the steel plate of the present invention, a plurality of branch pipes are installed on each of the main pipes, and the branch pipes are arranged in sequence and at equal distances along the axial direction of the main pipe.

[0009] As a preferred solution of the purging device for reducing the pressure of iron oxide on the sheared edge of the steel plate according to the present invention, the spacing between two adjacent branch pipes is 100 mm.

[0010] As a preferred solution of the purging device for reducing the intrusion of iron oxide into the sheared edge of the steel plate according to the present invention, the diameter of the main pipe is 45 mm, and the diameter of the branch pipe is 10 mm.

[0011] As a preferred solution of the purging device for reducing the intrusion of iron oxide into the sheared edge of the steel plate according to the present invention, the length of the main pipe is 550 mm.

[0012] The beneficial effects of the present invention are: (1) The present invention removes the iron oxide scale on the edge of the steel plate by blowing, thereby preventing the iron oxide scale from being pressed into the edge of the steel plate due to the pressure applied by the pinch roller during the steel plate shearing production process, thereby significantly reducing the iron oxide scale pressed into the surface edge.

[0013] (2) The present invention uses a thin steel block to weld a lifting arm on the I-beam support, which can prevent the compressed air injection assembly from falling off the mounting bracket due to the reverse force of the injected compressed air.

[0014] (3) In the present invention, the compressed air injection assembly is fixedly mounted on the pinch roller via a mounting seat. When the upper pinch roller is driven to rise and fall by the pinch roller hydraulic drive cylinder, the compressed air injection assembly fixedly mounted on the pinch roller coupling guard will also move up and down with the rise and fall of the pinch roller, thereby enabling the purging device to adapt to steel plates of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0016] Figure 1 A schematic diagram of the structure of a purging device provided by the present invention for reducing the pressure of iron oxide on the sheared edge of a steel plate; Figure 2 A schematic diagram of the installation of a purging device provided by the present invention for reducing the intrusion of iron oxide into the sheared edge of a steel plate; Figure 3 A schematic diagram of the use of the purging device provided by the present invention for reducing the intrusion of iron oxide into the sheared edge of a steel plate; Wherein: 100, mounting seat; 110, fixing plate; 120, mounting bracket; 200, compressed air injection assembly; 210, main pipe; 220, branch pipe; 300, pinch roller; 310, coupling shield; 320, hydraulic drive cylinder. DETAILED DESCRIPTION

[0017] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific implementation modes and in combination with the accompanying drawings.

[0018] The present application provides a purging device for reducing the pressure of iron oxide on the shear edge of a steel plate, see Figure 1 The device includes a mounting base 100 and a compressed air injection assembly 200 fixedly mounted on the mounting base 100. The compressed air injection assembly 200 can inject compressed gas onto the surface of the steel plate to remove the iron oxide scale on the edge of the steel plate.

[0019] See also Figure 2 , the mounting seat 100 is fixedly mounted on the side of the pinch roller 300. Specifically, the mounting seat 100 includes a fixing plate 110 fixedly mounted on the coupling shield 310 of the pinch roller 300 and a mounting bracket 120 fixedly mounted on the fixing plate 110. In this embodiment, the fixing plate 110 is fixedly welded to the coupling shield 310 of the pinch roller 300, and the mounting bracket 120 is fixedly welded to the fixing plate 110.

[0020] The compressed air injection assembly 200 includes a main body 210 and a plurality of branch pipes 220 fixedly mounted on the main body 210. The main body 210 is fixedly mounted on the mounting bracket 120, and the axis of the main body 210 is parallel to the axis of the adjacent pinch roller 300. One end of the main body 210 is connected to the air source end of the compressed air, and the other end is closed. The air inlet ends of all the branch pipes 220 are connected to the main body 210, and the air outlet ends of all the branch pipes 220 are facing the steel plate in the pinch roller 300.

[0021] See also Figure 3, all branch pipes 220 are arranged in sequence and at equal distances along the axis direction of the main body 210. The compressed air source end delivers the compressed air into the main body 210 and sprays it onto the surface of the steel plate through the branch pipes 220. The compressed air sprayed onto the surface of the steel plate can effectively cover the area in contact with the edge of the steel plate when the pinch roller 300 is pressed down, and blow away the iron oxide scale on the edge of the steel plate, preventing the iron oxide scale from being pressed into the edge of the steel plate due to the pressure applied by the pinch roller 300 during the steel plate shearing production process, and significantly reducing the iron oxide scale pressed into the edge of the surface.

[0022] In this embodiment, the diameter of the main pipe 210 is 45 mm, the length of the main pipe 210 is 550 mm, the diameter of the branch pipe 220 is 10 mm, and the distance between two adjacent branch pipes 220 is 100 mm.

[0023] Preferably, the mounting bracket 120 is specifically an I-beam bracket, and a thin steel block is welded on the I-beam bracket to form a lifting arm for preventing the compressed air injection assembly 200 from falling off the mounting bracket 120 due to the reverse force of the injection of compressed air.

[0024] When the steel plate is sheared, the pinch roller 300 will move with the change of the thickness of the steel plate. Specifically, the position of the lower pinch roller 300 is fixed, and the upper pinch roller 300 will be driven by the hydraulic drive cylinder 320 of the pinch roller 300 to rise and fall. At this time, the compressed air injection assembly 200 fixedly installed on the coupling shield 310 of the pinch roller 300 will also move up and down with the rise and fall of the pinch roller 300, so that the purge device can adapt to steel plates of different thicknesses.

[0025] Therefore, the technical solution of the present application removes the scale on the edge of the steel plate by blowing, thereby preventing the scale from being pressed into the edge of the steel plate due to the pressure applied by the pinch roller 300 during the steel plate shearing production process, thereby significantly reducing the scale from being pressed into the edge of the surface. According to statistics, the proportion of edge press-in and press-pit defects of 12-46mm steel plates sheared is reduced by 96% compared to the original, and the surface quality of the steel plate is significantly improved.

[0026] In addition to the above embodiments, the present invention may also have other implementation modes; any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A purging device for reducing the intrusion of iron oxide into the shear edge of a steel plate, characterized in that: include: A mounting seat (100) fixedly mounted on a side of the pinch roller (300); A compressed air injection assembly (200) is fixedly mounted on the mounting seat (100), and comprises a main body (210) and a branch pipe (220) fixedly mounted on the main body (210), one end of the main body (210) is connected to an air source end, the other end of the main body (210) is closed, the branch pipe (220) is connected to the main body (210), and the air outlet ends of the branch pipes (220) are both oriented toward the steel plate located in the clamping roller (300).

2. The purging device for reducing the iron oxide pressure at the shear edge of the steel plate according to claim 1, characterized in that: The mounting seat (100) comprises a fixing plate (110) fixedly mounted on a coupling shield (310) of a pinch roller (300) and a mounting bracket (120) fixedly mounted on the fixing plate (110), and the main pipe (210) is fixedly mounted on the mounting bracket (120).

3. The purging device for reducing the iron oxide pressure at the shear edge of the steel plate according to claim 1, characterized in that: The axis of the main body (210) is parallel to the axis of the pinch roller (300).

4. The purging device for reducing the iron oxide pressure at the shear edge of the steel plate according to claim 3 is characterized in that: A plurality of branch pipes (220) are installed on each of the main pipe bodies (210), and the plurality of branch pipes (220) are arranged in sequence and at equal intervals along the axial direction of the main pipe body (210).

5. The purging device for reducing the iron oxide pressure at the shear edge of the steel plate according to claim 4, characterized in that: The distance between two adjacent branch pipes (220) is 100 mm.

6. The purging device for reducing the iron oxide pressure in the shear edge of the steel plate according to claim 1, characterized in that: The diameter of the main pipe (210) is 45 mm, and the diameter of the branch pipe (220) is 10 mm.

7. The purging device for reducing the iron oxide pressure at the shear edge of the steel plate according to claim 1, characterized in that: The length of the main pipe (210) is 550 mm.

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