Roll shape on-line repairing device based on direct drive structure

Abstract

This invention discloses an online roll shape repair device based on a direct-drive structure, relating to the field of roll repair technology. It includes two horizontally arranged work rolls, with both ends mounted on bearing seats. It also includes a linear motor with a grinding assembly mounted on it. The linear motor drives the grinding assembly to reciprocate along the length of the work rolls. The linear motor includes a fixed shaft and a moving shaft. The fixed shaft is parallel to the axis of the work rolls, and the moving shaft is sleeved on the fixed shaft. The moving shaft can reciprocate along the length of the fixed shaft but cannot rotate on the fixed shaft. The grinding assembly is mounted on the moving shaft to grind the roll surface of the work rolls. This invention directly mounts the online detection system on the rolls, enabling real-time monitoring of the roll status and reducing errors caused by changes in roll position. Compared to traditional motors, this invention significantly reduces the equipment's footprint by using a linear motor to drive the grinding wheel.

Description

Technical Field

[0001] This invention relates to the field of roll repair technology, and more particularly to an online roll shape repair device based on a direct-drive structure. Background Technology

[0002] Rolls are crucial components in the metal rolling process, primarily used to deform metal materials into desired shapes and thicknesses through continuous plastic deformation. Rolls are typically made of high-strength steel to withstand high pressure and friction. The condition of the rolls directly impacts product quality and production efficiency; therefore, maintaining their good condition is paramount. Traditional roll inspection and repair often rely on manual operation, which has many drawbacks, such as low inspection efficiency, large errors, high labor costs, low repair efficiency, and long downtime. These problems not only increase production costs but also reduce production line efficiency. While existing online inspection systems can improve inspection efficiency and monitor the condition of rolls in real time to detect potential faults and wear, they are typically installed on the roll stand. Changes in the position between the roll stand and the rolls can easily lead to inaccurate inspections. Furthermore, roll repair equipment usually uses traditional motors, which occupy a large area and limit the flexibility of equipment layout. To improve the intelligence and efficiency of roll repair, a new type of online roll shape repair equipment needs to be designed that can optimize space usage while ensuring high-precision inspection. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention adopts the following technical solution: an online roll shape repair device based on a direct-drive structure, comprising two horizontally arranged work rolls, the two ends of which are mounted on bearing seats, and a linear motor. A grinding assembly is mounted on the linear motor, which drives the grinding assembly to reciprocate along the length of the work rolls. The linear motor includes a fixed shaft and a moving shaft. The fixed shaft is parallel to the axis of the work rolls, and the moving shaft is sleeved on the fixed shaft. The moving shaft can reciprocate along the length of the fixed shaft, but cannot rotate on the fixed shaft. The grinding assembly is mounted on the moving shaft, which drives the grinding assembly to move, thereby grinding the surface of the work rolls.

[0004] Furthermore, the grinding assembly includes a rotary motor, which is fixedly mounted on a moving shaft. A grinding wheel is fixedly mounted on the output end of the rotary motor, and a grinding wheel protective cover is provided on the outer side of the grinding wheel.

[0005] Furthermore, the bearing housing is provided with a sliding groove, which is a rectangular sliding groove. A slider is slidably installed in the sliding groove. The slider is fixedly installed with the fixed shaft. The slider is also connected to a linear motion component. The linear motion component drives the slider to slide in the sliding groove, and the slider drives the fixed shaft to move, thereby bringing the grinding wheel and the work roller into contact.

[0006] Furthermore, the linear motion component includes a hydraulic cylinder, the extension rod of which is connected to a slider, thereby driving the slider to slide within a groove.

[0007] Furthermore, the linear motion assembly includes a slider, a slider and a slider 1 fixedly mounted, the slider being slidably mounted on a linear guide rail, and the slider being threadedly mounted to a lead screw. The rotation of the lead screw drives the slider to slide within the linear guide rail, thereby driving slider 1 to slide within a groove 1.

[0008] Furthermore, a second sliding groove is provided along the length direction of the fixed shaft. The second sliding groove is straight in shape, and its length is greater than the length of the working roller surface. A limit block is slidably installed inside the second sliding groove, and the limit block is fixedly installed on the moving shaft.

[0009] Furthermore, the bearing housing is also equipped with a grinding wheel dressing device, which is used to dress the grinding wheel.

[0010] Furthermore, it also includes an online inspection system, which detects the surface shape of the work roll. The online inspection system includes a positioning component and a linear detection module, with the linear detection module installed on the positioning component.

[0011] Furthermore, the positioning component includes a support base, which is disposed at both ends of the work roller. One end of the support base is coaxially disposed with the work roller and is sleeved on the work roller. The support base is provided with a limiting hole, and the bearing seat is also provided with a limiting hole. A limiting rod is installed in the limiting hole of the support base and the limiting hole of the bearing seat, and the limiting rod passes through the limiting hole of the bearing seat and the limiting hole of the support base. The limiting rod positions the support base and prevents the support base from rotating on the work roller. The support bases at both ends of the work roller are connected by a crossbeam.

[0012] Furthermore, the straight line detection module includes a transverse component, on which a laser displacement sensor is mounted. The transverse component is used to drive the laser displacement sensor to move horizontally, thereby detecting the shape of the work roller through the laser displacement sensor.

[0013] The advantages of this invention compared with the prior art are: (1) This invention directly installs the online detection system on the roll, which can monitor the roll status in real time, reduce the error caused by the change of roll position, and significantly improve the detection accuracy; (2) This invention uses a linear motor to drive the grinding wheel to move, which significantly reduces the equipment footprint compared with the traditional motor, making the equipment layout on the rolling site more flexible; (3) This invention has the function of automatic detection and repair, which reduces the need for manual intervention, improves the safety and reliability of operation, and can quickly repair the roll by precisely controlling the position and movement trajectory of the grinding wheel, shortening downtime and improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the online roll shape repair device based on the direct drive structure of the present invention.

[0015] Figure 2 This is a top view of the overall structure of the online roll shape repair device based on the direct drive structure of the present invention.

[0016] Figure 3 This is a partial structural diagram of the online roll shape repair device based on a direct-drive structure according to the present invention. Figure 1 .

[0017] Figure 4 This is a partial structural diagram of the online roll shape repair device based on a direct-drive structure according to the present invention. Figure 2 .

[0018] Figure 5 This is a partial structural diagram of the online roll shape repair device based on a direct-drive structure according to the present invention. Figure 3 .

[0019] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0020] Reference numerals in the attached drawings: 101-Bearing seat; 102-Slide groove one; 2-Working roller; 301-Slide block one; 302-Fixed shaft; 303-Grinding wheel protective cover; 304-Moving shaft; 305-Rotary motor; 306-Grinding wheel; 307-Limit block; 308-Slide groove two; 401-Support seat; 402-Crossbeam; 403-Slide block two; 404-Laser displacement sensor; 405-Limit rod; 406-Transverse guide rail; 5-Grinding wheel dressing device. Detailed Implementation

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] like Figures 1-6 The online roll shape repair equipment based on direct drive structure shown includes two horizontally arranged work rolls 2, which are arranged vertically. Both ends of each work roll 2 are mounted on bearing seats 101, which are mounted on a frame. The two work rolls 2 are connected to a power mechanism, which drives the two work rolls 2 to rotate and roll the workpiece. A linear motor is installed between the bearing seats 101 at both ends of each work roll 2. A grinding component is installed on the linear motor. The linear motor drives the grinding component to reciprocate along the length of the work roll 2, thereby grinding different positions on the surface of the work roll 2.

[0024] The linear motor includes a fixed shaft 302 and a moving shaft 304. The fixed shaft 302 is parallel to the axis of the working roller 2 and is rod-shaped. The moving shaft 304 is sleeved on the fixed shaft 302. A second groove 308 is provided along the length of the fixed shaft 302, located on the circumference of the fixed shaft. The second groove 308 is straight. The moving shaft 304 has an annular structure. A limit block 307 is provided on the inner ring of the moving shaft 304. The limit block 307 slides with the second groove 308, thereby allowing the moving shaft 304 to reciprocate along the length of the fixed shaft 302, while preventing the moving shaft 304 from rotating on the fixed shaft 302. The moving shaft 304 is equipped with a grinding assembly, which grinds the surface of the work roll 2. When the linear motor is started, the moving shaft 304 slides on the fixed shaft 302. The limiting block 307 slides in the slide groove 308 to prevent the moving shaft 304 from rotating. The moving shaft 304 drives the grinding assembly to move, and the grinding assembly grinds different positions of the work roll 2. By using a linear motor to drive the grinding assembly to move back and forth, compared with the traditional method of motors needing to be connected to mechanical structures to drive the grinding assembly to move back and forth, the footprint of the equipment is significantly reduced, making the layout of the equipment on the rolling site more flexible and convenient.

[0025] The bearing housing 101 is provided with a slide groove 102, which is a rectangular slide groove. A slider 301 is slidably installed in the slide groove 102. The slider 301 cannot be disengaged from the slide groove 102 (a baffle can be provided on the side of the slide groove 102 to prevent the slider 301 from disengaging). The slider 301 is fixedly installed with the fixed shaft 302. The slider 301 is also connected to the linear motion component. The linear motion component drives the slider 301 to slide in the slide groove 102, thereby bringing the grinding wheel 306 into contact with the work roller 2, so as to facilitate grinding of the work roller 2.

[0026] The linear motion assembly includes a hydraulic cylinder, which is mounted on a bearing housing 101 and is horizontally positioned. The extension rod of the hydraulic cylinder is connected to a slider 301. When the hydraulic cylinder is activated, the extension rod of the hydraulic cylinder drives the slider 301 to slide within the slide groove 102. The slider 301 drives the linear motor and the grinding assembly to move, thereby adjusting the distance between the grinding assembly and the work roller 2.

[0027] The grinding assembly includes a rotary motor 305 and a grinding wheel 306. The rotary motor 305 is fixedly mounted on the moving shaft 304, and the grinding wheel 306 is fixedly mounted on the output end of the rotary motor 305. The axis of the grinding wheel 306 is parallel to the axis of the work roller 2. When the rotary motor 305 is started, the output end of the rotary motor 305 drives the grinding wheel 306 to rotate, and the surface of the work roller 2 is ground by the grinding wheel 306.

[0028] A grinding wheel protective cover 303 is provided on the outer side of the grinding wheel 306, and the grinding wheel protective cover 303 is fixedly installed on the moving shaft 304; by providing the grinding wheel protective cover 303, grinding debris is prevented from flying everywhere.

[0029] A grinding wheel dressing device 5 is provided on the bearing housing 101, and the grinding wheel 306 is dressed by the grinding wheel dressing device 5.

[0030] An online detection system is installed on the work roll 2 to detect the surface shape of the work roll 2.

[0031] The online inspection system includes a positioning component and a linear detection module. The positioning component is installed on the work roll 2, and the linear detection module is set on the positioning component.

[0032] The positioning assembly includes a support base 401, a crossbeam 402, and a limiting rod 405. The support base 401 is disposed at both ends of the work roll 2, with one end of the support base 401 coaxially arranged with the work roll 2 and sleeved on the work roll 2. The support bases 401 at both ends of the work roll 2 are connected together by the crossbeam 402, which is parallel to the roll. The support base 401 is provided with a limiting hole, and the bearing seat 101 is also provided with a limiting hole. The limiting rod 405 is installed in the limiting hole of the bearing seat 101 and the support base 401. Within the limiting hole of bearing seat 1, the limiting rod 405 positions the support seat 401 to prevent it from rotating on the work roller 2. By directly mounting the support seat 401 onto the work roller 2, even if the position of bearing seat 101 changes, the distance between the crossbeam 402 on the support seat 401 and the work roller 2 remains constant. This keeps the distance between the linear detection module on the crossbeam 402 and the work roller 2 constant, reducing errors caused by changes in the position of bearing seat 101 and significantly improving detection accuracy.

[0033] The linear detection module includes a transverse component and a laser displacement sensor 404. The transverse component is mounted on the crossbeam 402, and the laser displacement sensor 404 is mounted on the transverse component. The transverse component is used to drive the laser displacement sensor 404 to move along the length direction of the work roll 2, thereby detecting the roll surface of the work roll 2 through the laser displacement sensor 404. The specific detection process is as follows: the laser displacement sensor 404 emits a laser, which hits the surface of the work roll 2 and is received by the receiver. Based on the laser propagation speed and time, the shape of the work roll 2 and the coordinates of the position to be ground can be calculated.

[0034] The transverse movement assembly includes a transverse movement motor, a transverse movement screw, a second slider 403, and a transverse movement guide rail 406. The transverse movement motor is fixedly mounted on the crossbeam 402. The output shaft of the transverse movement motor and the transverse movement screw are fixedly mounted. The transverse movement screw and the crossbeam 402 are arranged parallel to each other. The transverse movement screw and the second slider 403 are threadedly mounted. A laser displacement sensor 404 is fixedly mounted on the second slider 403. The second slider 403 is slidably mounted on the transverse movement guide rail 406. The transverse movement guide rail 406 is fixedly mounted on the crossbeam 402. When the transverse movement motor is started, the output shaft of the transverse movement motor drives the transverse movement screw to rotate. The transverse movement screw drives the second slider 403 to slide on the transverse movement guide rail 406. The second slider 403 drives the laser displacement sensor 404 to move along the length direction of the work roller 2. At the same time, in coordination with the rotation of the work roller 2, the entire roller surface of the work roller 2 is detected.

[0035] Example 2

[0036] The linear motion assembly includes a slider, a linear guide rail, a lead screw, and a motor. The slider and slider-301 are fixedly installed, and the slider is slidably installed on the linear guide rail. The linear guide rail is horizontally set and fixedly installed on the bearing seat 101. The slider is also threadedly installed on the lead screw, and the lead screw and the output shaft of the motor are fixedly installed. When the motor is started, the motor drives the lead screw to rotate, and the lead screw drives the slider to slide within the linear guide rail. The slider drives slider-301 to move, thereby driving the linear motor on slider-301 to move. The linear motor drives the grinding wheel 306 to move, thereby adjusting the distance between the grinding wheel 306 and the work roller 2, and grinding the work roller 2. The remaining structure of this embodiment is exactly the same as that of embodiment 1, and will not be described again here.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A roll shape online repair device based on a direct-drive structure, characterized in that, It includes two horizontally arranged work rollers (2), which are arranged vertically. Both ends of each work roller (2) are mounted on bearing seats (101), which are mounted on the frame. The two work rollers (2) are connected to the power mechanism. A linear motor is provided between the bearing seats (101) at both ends of each work roller (2). A grinding component is provided on the linear motor. The linear motor is used to drive the grinding component to reciprocate along the length direction of the work roller (2). The linear motor includes a fixed shaft (302) and a moving shaft (304). The fixed shaft (302) is parallel to the axis of the working roller (2). The fixed shaft (302) is in the shape of a round rod. The moving shaft (304) is a ring structure. The moving shaft (304) is sleeved on the fixed shaft (302). The moving shaft (304) can reciprocate along the length direction of the fixed shaft (302). The moving shaft (304) cannot rotate on the fixed shaft (302). A grinding component is provided on the moving shaft (304). The grinding component is moved by the moving shaft (304) to grind the roller surface of the working roller (2). The fixed shaft (302) is provided with a second slide groove (308) along its length. The second slide groove (308) is straight in shape and its length is greater than the length of the working roller (2). A limit block (307) is slidably installed in the second slide groove (308). The limit block (307) is fixedly installed on the moving shaft (304). The limit block (307) is provided on the inner ring of the moving shaft (304). The grinding assembly includes a rotary motor (305). The rotary motor (305) is fixedly installed on the moving shaft (304). A grinding wheel (306) is fixedly installed on the output end of the rotary motor (305). A grinding wheel protective cover (303) is provided on the outer side of the grinding wheel (306). The bearing housing (101) is provided with a sliding groove (102), which is a rectangular sliding groove. A slider (301) is slidably installed in the sliding groove (102). The slider (301) is fixedly installed with the fixed shaft (302). The slider (301) is also connected to a linear motion component. The linear motion component drives the slider (301) to slide in the sliding groove (102). The slider (301) drives the fixed shaft (302) to move, thereby making the grinding wheel (306) and the work roller (2) fit together. The axis of the grinding wheel (306) is parallel to the axis of the work roller (2). It also includes an online detection system to detect the surface shape of the work roll (2). The online detection system includes a positioning component and a linear detection module. The positioning component is equipped with a linear detection module. The positioning component includes a support base (401). The support base (401) is located at both ends of the work roll (2). One end of the support base (401) is coaxially arranged with the work roll (2) and the support base (401) is sleeved on the work roll (2). The support base (401) is provided with a limit hole, and the bearing seat (101) is also provided with a limit hole. Limiting devices are installed in the limit holes of the support base (401) and the bearing seat (101). The rod (405) and the limiting rod (405) pass through the limiting hole of the bearing seat (101) and the limiting hole of the support seat (401). The limiting rod (405) positions the support seat (401) to prevent the support seat (401) from rotating on the work roller (2). The support seats (401) at both ends of the work roller (2) are connected by a crossbeam (402). The linear detection module includes a transverse component. A laser displacement sensor (404) is provided on the transverse component. The transverse component is used to drive the laser displacement sensor (404) to move horizontally, so as to detect the shape of the work roller (2) through the laser displacement sensor (404). The transverse assembly includes a transverse motor, a transverse lead screw, a second slider (403), and a transverse guide rail (406). The transverse motor is fixedly mounted on the crossbeam (402). The output shaft of the transverse motor and the transverse lead screw are fixedly mounted. The transverse lead screw and the crossbeam (402) are arranged in parallel. The transverse lead screw and the second slider (403) are threadedly mounted. A laser displacement sensor (404) is fixedly mounted on the second slider (403). The second slider (403) is slidably mounted on the transverse guide rail (406). The transverse guide rail (406) is fixedly mounted on the crossbeam (402).

2. The online roll shape repair equipment based on a direct-drive structure as described in claim 1, characterized in that, The linear motion component includes a hydraulic cylinder, the extension rod of which is connected to a slider (301), thereby driving the slider (301) to slide within the groove (102).

3. The online roll shape repair equipment based on a direct-drive structure as described in claim 1, characterized in that, The linear motion assembly includes a slider, a slider and a slider one (301) fixedly installed, the slider is slidably installed on the linear guide rail, the slider is also threadedly installed with a lead screw, the slider is driven to slide in the linear guide rail by the rotation of the lead screw, thereby driving the slider one (301) to slide in the slide groove one (102).

4. The online roll shape repair equipment based on a direct-drive structure as described in claim 1, characterized in that, The bearing housing (101) is also provided with a grinding wheel dressing device (5), which is used to dress the grinding wheel (306).

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