Rolling work roll with self-cleaning function and roll set assembly structure

Abstract

The application relates to the technical field of rolling work rolls, in particular to a rolling work roll with a self-cleaning function and a roll system assembly structure, which comprises a work roll, symmetrical bearing housings are assembled on the two sides of the work roll, connecting arms are fixedly connected to the front and rear ends of each bearing housing, a mounting rack is fixedly connected between the two connecting arms located at the front end, a plurality of mounting seats arranged at equal intervals are detachably connected to the top surface of the mounting rack, a flip cover is rotationally connected to the top surface of each mounting seat, a gas jet pipe is arranged between the mounting seat and the flip cover, a gas conveying pipe is communicated with the gas inlet end of the gas jet pipe through flanges, and a positioning groove is formed in the opposite surface of the mounting seat and the flip cover in cooperation, and the positioning groove is inlaid with the gas jet pipe and the gas conveying pipe. The application aims to solve the problem that the surface of a rolled piece is scratched due to the fact that the metal scraps on the surface of a work roll are not cleaned in time in the cold rolling process of a steel strip.

Description

Technical Field

[0001] This invention relates to the field of rolling mill roll technology, specifically to a rolling mill roll with self-cleaning function and a roll system assembly structure. Background Technology

[0002] In the rolling process of cold-rolled strip steel, the work roll is the component that directly contacts the strip steel. Its core function is to apply rolling force to cause plastic deformation of the strip steel, thereby reducing its thickness and adjusting its shape. In order to better act on the strip steel, the surface of the work roll is finely treated to ensure flatness and smoothness, thus ensuring the surface quality of the strip steel. The main function of the support roll below it is to provide effective support for the work roll. It uses its own rigidity to offset the impact of the rolling force on the work roll, reduce the bending deformation of the work roll, and avoid strip steel defects such as uneven thickness or wavy shape caused by the deformation of the work roll. This combination not only achieves precise rolling of the strip steel, but also ensures the high precision and good surface quality of cold-rolled strip steel. It is a key combination to ensure the rolling effect in the cold rolling process.

[0003] During the rolling process of cold-rolled strip steel, various debris easily adheres to the surface of the work rolls, such as residual iron oxide scale, metal particles in the rolling oil, other impurities, and alloy particles that fall off due to microscopic wear caused by friction and thermal stress during the rolling process. When the strip steel comes into contact with the work rolls, these debris are squeezed and adhered to the roll surface. If these debris are not removed in time, they will scratch the surface of the rolled piece during subsequent rolling processes, seriously affecting the product quality of cold-rolled strip steel. In the existing technology, manual periodic cleaning or external cleaning devices are usually used for cleaning, but manual cleaning is inefficient, labor-intensive, and cannot be cleaned in real time during the rolling process. Summary of the Invention

[0004] The purpose of this invention is to provide a rolling work roll and roll assembly structure with self-cleaning function to solve the problem of scratches on the surface of the rolled product caused by untimely cleaning of metal debris on the surface of the work roll during the cold rolling process of strip steel in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A self-cleaning rolling mill roll includes a rolling mill roll with symmetrical bearing seats on both sides. Each bearing seat is fixedly connected to a connecting arm at its front and rear ends. A mounting frame is fixedly connected between the two connecting arms at the front end. The top surface of the mounting frame is detachably connected to a plurality of equally spaced mounting seats. A flip cover is rotatably connected to the top surface of each mounting seat. An air jet pipe is installed between the mounting seat and the flip cover. The air inlet end of the air jet pipe is connected to an air supply pipe through a flange.

[0007] Preferably, the mounting base has a positioning groove on the opposite side of the flip cover, and the positioning groove is for the jet pipe and the air supply pipe to be embedded.

[0008] Preferably, a dust collection box is fixedly connected to the bottom end of the mounting bracket, and a door is rotatably connected to the front end of the dust collection box. The dust collection box is used to receive debris blown off by the air jet pipe.

[0009] A rolling mill roll assembly structure includes the rolling mill roll and a frame. A right side plate is fixedly connected to the right side of the frame, and a left side plate is detachably connected to the left side of the frame. A left positioning plate is fixedly connected to the right side of the left side plate, and a right positioning plate is fixedly connected to the left side of the right side plate.

[0010] Preferably, both the right positioning plate and the left positioning plate are provided with a first positioning groove for the connecting arm located at the front end to be inserted, and the inner side of the rear end of the frame is provided with a second positioning groove for the connecting arm located at the rear end to be inserted.

[0011] Preferably, both the left and right sides of the plate are movably fitted with limiting pins, and the two limiting pins are arranged symmetrically. The limiting pins are used to position the mounting base.

[0012] Preferably, the surfaces of the left and right side plates are provided with insertion holes for the limiting pin to pass through, and the surface of the connecting arm at the front end is provided with a through hole for the limiting pin to pass through. The limiting pin is used to position the mounting base by passing through the insertion holes and the through holes.

[0013] Preferably, the limiting pin includes a push-pull rod, an insert rod, and a limiting block. The push-pull rod has a U-shaped rod structure, with its two ends coaxially fixedly connected to the insert rod. The opposing surfaces of the two insert rods are fixedly connected to the limiting block. The front and rear surfaces of each mounting base are provided with limiting grooves for the limiting block to pass through.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By designing the jet pipe to efficiently blow away debris from the surface of the work roll, the debris is prevented from being carried into the rolling zone, which would cause defects such as scratches and indentations on the strip surface. This directly improves the surface quality of the rolled products. Its active cleaning function, with the pipe efficiently stripping away debris and combined with the negative pressure absorption of the dust collection box, allows for immediate collection, preventing debris from splashing and contaminating the equipment and workshop environment or injuring operators, thus reducing safety hazards.

[0016] 2. The jet pipe and the air delivery pipe are fixed by the mounting base and the flip-top positioning groove structure. When repairing or replacing a single jet pipe, only the corresponding flip-top needs to be opened for operation. There is no need to disassemble the entire pipeline. The maintenance is highly targeted. The mounting base is connected to the mounting bracket by the cross-shaped plug and the cross-shaped slot. With the help of the limit pin for positioning, the fixing can be released by simply pulling out the pin. The mounting base can be quickly separated, reducing downtime for maintenance and improving equipment uptime.

[0017] 3. The connecting arm is precisely positioned by the first positioning groove and the second positioning groove. The limiting pin is constrained by the insertion hole, the through hole and the limiting groove to ensure the stability of the position of the mounting base, the air pipe and other components, and to avoid the decrease in cleaning effect or collision with the equipment due to the displacement. In addition, the left side plate is designed to be detachable, which facilitates the overall assembly and debugging of the roller system.

[0018] 4. The number of air jets can be flexibly adjusted according to the length of the working roller to meet the cleaning needs of different specifications of working rollers. The overall structure has strong expandability and adaptability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the rolling mill roll of the present invention;

[0020] Figure 2 This is a diagram showing the connection state of the connecting arm, mounting base, flip cover, and dust collection box of the present invention.

[0021] Figure 3 This is a schematic diagram of the mounting bracket of the present invention;

[0022] Figure 4 This is a diagram showing the unfolded state of the flip cover of the present invention;

[0023] Figure 5 This is a schematic diagram of the roller assembly structure of the present invention;

[0024] Figure 6 This is a cross-sectional view of the roller assembly structure of the present invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0026] Figure 8 This is a schematic diagram of the structure of the limiting pin of the present invention;

[0027] Figure 9 For the present invention Figure 8 Enlarged view of point B in the middle;

[0028] Figure 10 This is a cross-sectional view of the left and right side plates of the present invention;

[0029] Figure 11 This is a vertical cross-sectional view of the roller assembly structure of the present invention.

[0030] In the diagram: 1. Working roller; 2. Bearing housing; 3. Connecting arm; 4. Mounting bracket; 5. Cross slot; 6. Cross insert block; 7. Mounting base; 8. Positioning groove; 9. Air jet pipe; 10. Air supply pipe; 11. Flip cover; 12. Left positioning plate; 13. Top plate; 14. Push-pull rod; 15. Insert rod; 16. Limiting block; 17. Limiting groove; 18. Through hole; 19. Insertion hole; 20. Frame; 21. Right side plate; 22. Right positioning plate; 23. First positioning groove; 24. Second positioning groove; 25. Left side plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 4 The present invention provides a technical solution.

[0033] A self-cleaning rolling mill roll includes a rolling mill roll 1. Symmetrical bearing seats 2 are mounted on both sides of the rolling mill roll 1, and the rolling mill roll 1 is rotatably connected to the bearing seats 2. Each bearing seat 2 has a connecting arm 3 fixedly connected to its front and rear ends. A mounting frame 4 is fixedly connected between the two connecting arms 3 at the front end. Multiple equally spaced mounting bases 7 are detachably connected to the top surface of the mounting frame 4. A flip cover 11 is rotatably connected to the top surface of each mounting base 7. An air jet pipe 9 is installed between the mounting base 7 and the flip cover 11. The air jet pipe 9 includes an outlet end and an inlet end. The inlet end of the air jet pipe 9 is connected to a gas delivery pipe 10 through a flange. The gas delivery pipe 10 is connected to an air compressor. The gas delivery pipe 10 provides high-pressure gas through the air compressor. At the same time, a gas storage tank is provided to stabilize the gas pressure. The gas pressure is precisely controlled by a pressure regulating valve and a pressure sensor.

[0034] The mounting base 7 and the flip cover 11 have a positioning groove 8 on their opposite surfaces. The positioning groove 8 is for the jet pipe 9 and the air supply pipe 10 to be embedded. When the two are closed, the positioning groove 8 on the opposite surfaces can lock the jet pipe 9 and the air supply pipe 10 in place. After closing, it can also be locked with bolts as needed to prevent the flip cover 11 from being opened accidentally. The design of the mounting bracket 4, the detachable mounting base 7, the flip cover 11 and the positioning groove 8 facilitates the replacement and cleaning of the jet pipe 9 and reduces maintenance costs.

[0035] The jet pipes 9 are arranged on the inlet side of the work roll 1 to clean the surface of the work roll 1 before the strip enters the rolling zone. The number of jet pipes 9 is determined according to the length of the work roll 1. The jetting direction is at an angle of 15°-30° to the tangent of the surface of the work roll 1. During operation, the jetting equipment is started, and gas is sprayed from the outlet end of the jet pipe 9 through the gas delivery pipe 10 to the surface of the work roll 1 to remove the debris on its surface. By cleaning in advance on the inlet side, potential defects can be eliminated before they occur, and strip quality problems can be avoided from the source. This is the key to ensuring rolling quality. The number of jet pipes 9 can be determined according to the length of the work roll 1 and they are arranged at equal intervals to achieve cleaning of the entire roll surface without dead corners. This ensures that the entire width direction from the edge of the roll surface to the center is covered by high-pressure airflow, avoiding transverse defects in the strip caused by local uncleaning.

[0036] The installation steps for the jet pipe 9 and the air supply pipe 10 are as follows: First, flip open the cover 11 and insert the interconnected jet pipe 9 and air supply pipe 10 into the positioning groove 8 of the mounting base 7. Then, flip the cover 11 back on so that the connection between the two is inserted into the cavity formed by the positioning groove 8 of the mounting base 7 and the cover 11, thereby completing the positioning of the connection between the jet pipe 9 and the air supply pipe 10.

[0037] The lower end of the mounting base 7 is fixedly connected to a cross-shaped insert 6, and the top of the mounting bracket 4 is provided with a cross-shaped slot 5 for the cross-shaped insert 6 to be inserted.

[0038] The bottom of the mounting bracket 4 is fixedly connected to a dust collection box, and the front end of the dust collection box is rotatably connected to a door. The dust collection box is used to receive debris blown off by the jet pipe 9 to prevent splashing. When the dust collection box needs to be cleaned, the door can be opened for cleaning, which is convenient to use. To enhance this function, an industrial-grade negative pressure dust collection pump can be optionally installed on the dust collection box.

[0039] Please see Figures 1 to 11 This invention provides a technical solution: a rolling mill roll assembly structure, including a rolling mill roll and a frame 20. A right side plate 21 is fixedly connected to the right side of the frame 20, and a top plate 13 is fixedly connected to the top of the right side plate 21, and the top plate 13 is also fixedly connected to the top of the right side plate 21. A left side plate 25 is detachably connected to the left side of the frame 20, and the detachable connection can be made by bolts. The rolling mill roll 1 needs to be replaced regularly (e.g., after wear) or its internal components (e.g., bearings, cleaning devices) need to be repaired. The left side plate 25 is detachably connected by bolts, and the rolling mill roll 1 (including bearing seat 2, connecting arm 3, etc.) can be pulled out or inserted laterally from the left side after disassembly, which greatly shortens the downtime. A left positioning plate 12 is fixedly connected to the right side of the left side plate 25, and a right positioning plate 22 is fixedly connected to the left side of the right side plate 21.

[0040] A gap is reserved between the right positioning plate 22 and the frame 20 for the movement of the dust collection box, and a space is reserved between the left positioning plate 12 and the frame 20 for the movement of the dust collection box. Both the right positioning plate 22 and the left positioning plate 12 are provided with a first positioning groove 23 for the connecting arm 3 located at the front end to be inserted. A second positioning groove 24 is provided on the inner side of the rear end of the frame 20 for the connecting arm 3 located at the rear end to be inserted.

[0041] Both the left side plate 25 and the right side plate 21 are equipped with movably inserted limit pins. The two limit pins are arranged symmetrically and are used to position the mounting base 7. Both the left side plate 25 and the right side plate 21 are provided with insertion holes 19 for the limit pins to pass through. The front connecting arm 3 is provided with a through hole 18 for the limit pins to pass through. The limit pins are used to position the mounting base 7 by passing through the insertion holes 19 and the through holes 18.

[0042] The limiting pin includes a push-pull rod 14, an insertion rod 15, and a limiting block 16. The push-pull rod 14 has a U-shaped rod structure, with its two ends coaxially fixedly connected to the insertion rod 15. The limiting blocks 16 are fixedly connected to the opposing surfaces of the two insertion rods 15. Each mounting base 7 has a limiting groove 17 on its front and rear surfaces for the limiting block 16 to pass through. The push-pull rod 14 can be adapted to be fixed with bolts to the left side plate 25 and the right side plate 21. When a single jet pipe 9 needs to be repaired or replaced, first remove the fixing bolts of the push-pull rod 14, pull the push-pull rod 14 outward, and move the insertion rod 15 synchronously until the limiting block 16 is completely disengaged from the limiting groove 17 of the mounting base 7 to be disassembled. Then, stop moving. At this time, the positioning of the mounting base 7 is released. Pull the mounting base 7 upward to make the cross insertion block 6 disengage from the cross slot 5, and complete the disassembly of the mounting base 7. For ease of operation, the air supply pipe 10 can be adapted to be made of flexible hose material.

[0043] It also includes a support roller, which is located below the working roller 1 and provides support for the working roller 1.

[0044] The specific assembly procedure is as follows: First, install the work roller 1. Then, insert the front connecting arm 3 into the first positioning groove 23 and the rear connecting arm 3 into the second positioning groove 24. Next, detachably connect the left side plate 25 to the left side of the frame 20 using bolts, completing the closed positioning of both sides of the frame 20 and achieving the positioning of the work roller 1 and connecting arm 3. Then, install the mounting base 7 onto the mounting frame 4 in sequence. Align the cross-shaped insert 6 at the lower end of the mounting base 7 with the cross-shaped slot 5 at the top of the mounting frame 4, inserting it to achieve initial fixation of the mounting base 7. Finally, flip and open the flip cover 11 of the mounting base 7. Insert the interconnected jet pipe 9 and air supply pipe 10 into the positioning groove 8 of the mounting base 7, flip and close the flip cover 11 so that the connection between the jet pipe 9 and the air supply pipe 10 is embedded into the cavity formed by the positioning groove 8 of the mounting base 7 and the flip cover 11, thus completing the positioning of the pipe. Finally, insert the limiting pin from the insertion hole 19 so that the limiting pin passes through the through hole 18 of the connecting arm 3 and the limiting block 16 passes through the limiting groove 17 on the front and rear surfaces of each mounting base 7 in sequence to fix the mounting base 7. Finally, fix the push-pull rod 14 with bolts, and the overall assembly is completed.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rolling mill roll with self-cleaning function, comprising a rolling mill roll (1), characterized in that: The working roller (1) is equipped with symmetrical bearing seats (2) on both sides. Each bearing seat (2) is fixedly connected to a connecting arm (3) at both ends. A mounting frame (4) is fixedly connected between the two connecting arms (3) at the front end. Multiple mounting seats (7) are detachably connected to the top surface of the mounting frame (4). A flip cover (11) is rotatably connected to the top surface of each mounting seat (7). An air jet pipe (9) is installed between the mounting seat (7) and the flip cover (11). An air supply pipe (10) is connected to the air inlet end of the air jet pipe (9) through a flange.

2. A rolling mill roll with self-cleaning function according to claim 1, characterized in that, The mounting base (7) and the flip cover (11) have a positioning groove (8) on their opposite sides, which is used for the jet pipe (9) and the air supply pipe (10) to be embedded.

3. A rolling mill roll with self-cleaning function according to claim 1, characterized in that, The bottom end of the mounting bracket (4) is fixedly connected to a dust collection box, and the front end of the dust collection box is rotatably connected to a box door. The dust collection box is used to receive debris blown off by the jet pipe (9).

4. A rolling mill roll system assembly structure, characterized in that, Includes the rolling work roll and frame (20) as described in claim 1, wherein a right side plate (21) is fixedly connected to the right side of the frame (20), a left side plate (25) is detachably connected to the left side of the frame (20), a left positioning plate (12) is fixedly connected to the right side of the left side plate (25), and a right positioning plate (22) is fixedly connected to the left side of the right side plate (21).

5. The rolling mill roll system assembly structure according to claim 4, characterized in that, The right positioning plate (22) and the left positioning plate (12) are both provided with a first positioning groove (23) for the connecting arm (3) located at the front end to be inserted, and the inner side of the rear end of the frame (20) is provided with a second positioning groove (24) for the connecting arm (3) located at the rear end to be inserted.

6. The rolling mill roll system assembly structure according to claim 4, characterized in that, The left side plate (25) and the right side plate (21) are both equipped with movably inserted limiting pins. The two limiting pins are arranged symmetrically and are used to position the mounting base (7).

7. The rolling mill roll system assembly structure according to claim 6, characterized in that, The surfaces of the left side plate (25) and the right side plate (21) are provided with insertion holes (19) for the limit pin to pass through, and the surface of the connecting arm (3) at the front end is provided with a through hole (18) for the limit pin to pass through. The limit pin is used to position the mounting base (7) by passing through the insertion holes (19) and the through holes (18).

8. The rolling mill roll system assembly structure according to claim 6, characterized in that, The limiting pin includes a push-pull rod (14), a plug rod (15) and a limiting block (16). The push-pull rod (14) is a U-shaped rod structure, with the plug rod (15) fixedly connected to its two ends on the same axis. The limiting blocks (16) are fixedly connected to the opposite surfaces of the two plug rods (15). The front and rear surfaces of each mounting base (7) are provided with limiting grooves (17) through which the limiting blocks (16) pass.

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