Method for rotating reusable side guide plate wear-resistant sheet without groove after use

Abstract

The invention relates to a method for rotating a side guide plate wear-resisting piece capable of being reused for multiple times without grooves after use, and belongs to the field of side guide plate wear-resisting piece use technologies. Side guide plate body opening detection devices are arranged between the two outer sides of a side guide plate body and a hydraulic cylinder, and a rotation number detection device is arranged on a wear-resisting piece rotating device; a front strip steel passing detection sensor and a rear strip steel passing detection sensor are arranged at the front position and the rear position of a roller way upper side guide plate body respectively, and after strip steel passes and it is detected that the two side guide plate bodies are opened, a controller controls output teeth of a speed reducer or a motor to rotate, so that abrasion-resistant pieces rotate by the minimum angle, and the bottoms of abrasion-resistant grooves which pass multiple times are sequentially arranged; a regeneration plane is formed on the wear-resistant sheet, and the wear-resistant sheet can be continuously used on the basis and can be repeatedly used for multiple times, so that the use frequency of the wear-resistant sheet is prolonged, the service life of the wear-resistant sheet is prolonged, the replacement frequency of the wear-resistant sheet is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of side guide plate wear plate rotation method, especially in a kind of side guide plate wear plate rotation method with no groove can be reused after, belong to side guide plate wear plate using process field. BACKGROUND

[0002] Side guide plate body is usually installed on the conveying roller bed both sides upper position of finishing mill outlet to coiler inlet, Figure 10 is located the position diagram of side guide plate body above roller bed, the outer side of side guide plate body 11 is provided with hydraulic cylinder 14 respectively, two sides hydraulic cylinder 14 synchronous drive two sides side guide plate body 11 open to a certain position and close to strip steel 13 width position, the part shown in dotted line in the figure is the position 11a after opening side guide plate body, the inner side of side guide plate body 11 is provided with side guide plate 12, for guiding high-temperature strip steel 13 (temperature is about 600-650 DEG C) along the middle position of two sides side guide plate 12, under high-temperature condition, enter coiler, and the steel plate is rolled into whole volume, the outer side of two sides side guide plate body 11 is mainly used for adjusting the width between two sides side guide plate 12, satisfies the production of different width strip steel 13, in addition, when strip steel 13 enters between two sides side guide plate 12, hydraulic cylinder 14 pushes two sides side guide plate body 11 close to strip steel 13, and plays the guiding role to strip steel 13, for example, in the curling process of hot-rolled strip, side guide plate 12 is located on both sides of machine front conveying roller bed and machine conveying roller bed, cooperates two curling machines to be used alternately, realizes continuous production.

[0003] During the transmission of strip steel 13, intense friction will be generated between side guide plate 12 and strip steel 13, so that side guide plate 12 will be worn to form irregular grooves or be damaged, which will cause strip steel transmission to be unstable, jammed or even steel stacking accident, in order to prevent the occurrence of the situation, ensure the continuity and stability of production process, and prolong the service life of side guide plate, replaceable wear plate 16 is arranged on the inner side of side guide plate close to strip steel 13, to prolong the service life of side guide plate.

[0004] The material of wear plate is generally neoprene with high tensile strength, heat resistance, light resistance and aging resistance, non-crystalline metal ceramic that can withstand high-temperature metallurgical product intense sliding impact friction and wear under high-temperature condition of 600 DEG C-1000 DEG C, so that the service life of side guide plate is increased by more than 10-15 times.

[0005] In the prior art, there are two kinds of wear plate 16 setting methods, one is to set wear plate 16 on rotating shaft, wear plate 16 can rotate freely on rotating shaft, wear plate 16 rotates freely under the drive of strip steel 13, after a certain period of use, uneven surface is formed on the surface of wear plate 16, in this case, wear plate 16 needs to be replaced, the other is to rotate wear plate 17 at a certain large angle, Figure 11 is the use of the prior art situation diagram, wherein 17 is the strip 13 after one pass in the dotted line position wear plate 16 surface will form different direction of wear groove 17, wear plate 16 rotation several weeks after the replacement, otherwise the strip 13 will move along the existing wear groove 17, light will cause the strip 13 uneven on both sides, heavy will cause the steel and so on, even can cause shutdown. In order to avoid the occurrence of these problems, must replace the new wear plate 16.

[0006] In order to further improve the service life of wear plate, can be reused many times, need to continue to wear plate in the setting method and use process research and development. SUMMARY

[0007] In order to further improve the service life of wear plate, many times to use wear plate, seek better wear plate setting method and use process, the present application provides a kind of repeated use without wear groove side guide plate wear plate use method, its purpose is: wear plate rotates 180 ° according to minimum rotation angle, a plane is formed on its outer surface, can continue to be reused within the allowable thickness range, so as to extend the number of use of wear plate, extend the service life of wear plate, reduce the replacement frequency of wear plate, improve production efficiency.

[0008] The technical scheme of the present application is: the rotation method of the side guide plate wear plate which can be reused many times without groove after use, the side guide plate wear plate rotation device comprises: side guide plate body arranged on both sides of strip roller, hydraulic cylinder connected to the outer side of the side guide plate body, wear plate rotation device comprising motor arranged in the side guide plate body, controller, a plurality of wear plate notches are arranged on the two side guide plates, wear plate shafts are arranged at the center positions in the notches, wear plates are arranged on the wear plate shafts, the plurality of wear plates on both sides are higher than the plane of the side guide plate in thickness, side guide plate body opening detection device is arranged between the outer side of the side guide plate body and the hydraulic cylinder, rotation number detection device is arranged on the wear plate rotation device, front strip passing detection sensor and rear strip passing detection sensor are arranged at the front and rear positions of the roller, the side guide plate body opening detection device, the rotation number detection device, the front strip passing detection sensor and the rear strip passing detection sensor are connected with the controller, and the specific control steps are as follows: 1), the strip passes between the two side guide plate bodies, the front strip passing detection sensor detects that the strip is about to enter between the two side guide plate bodies, and feeds back to the controller, the controller controls the side guide plate to approach the two sides of the strip under the driving of the hydraulic cylinder, the strip contacts the outer surfaces of the plurality of wear plates, and linear scratches are left on the outer surfaces of the plurality of wear plates, respectively; 2) After the strip steel passes between the two side guide bodies, the rear strip steel is detected by the rear strip steel passing detection sensor, the controller controls the hydraulic cylinder outside the side guide body to act, the hydraulic cylinder drives the side guide body to open synchronously to both sides, and the side guide body opening detection device detects the side guide body and feeds back to the controller; 3) The controller sends instructions to the rotating motor, and the wear-resistant sheet rotating device rotates a small angle according to the setting in the controller. The rotating angle is detected by the rotating number detection device, and the rotating angle is fed back to the controller when it is in place, 4) Repeat the actions of 1)-3) above, each time the maximum chord on the wear-resistant sheet is less than or equal to the thickness of the strip steel, and the minimum angle of rotation of the wear-resistant sheet is between 1°±0.5°. After multiple rotations, a regenerated plane lower than the original wear-resistant sheet thickness is formed on the outer periphery of the wear-resistant sheet shaft after rotating 180°. The regenerated plane can be reused, and the actions of 1)-3) above are repeated; 5) The actions of 1)-4) above can be repeated multiple times until the wear-resistant sheet surface approaches the side guide surface before replacing a new wear-resistant sheet; Further, a ratchet and pawl are provided between the wear-resistant sheet shaft and the wear-resistant sheet to prevent the wear-resistant sheet from reversing; Further, the back of the wear-resistant sheet is provided with a stabilizer for maintaining the perpendicularity of the wear-resistant sheet surface plane; Further, the side guide body opening detection device is a proximity switch, a limit switch, a pressure sensor, and a photoelectric sensor; Further, the front strip steel passing detection sensor is arranged at a position in front of the side guide body, and the rear strip steel passing detection sensor is arranged at a position at the end of the side guide body. The front strip steel passing detection sensor and the rear strip steel passing detection sensor are photoelectric sensors; Further, the wear-resistant sheet rotating device includes a motor and a speed reducer. The rotating number detection device is arranged on the speed reducer or the motor. The rotating number detection device detects or controls the rotating pulse number of the motor. The pulse number of the speed reducer is calculated according to the motor speed and the gear number of the speed reducer. The pulse number of the rotating angle is set in the controller; Further, the output of the wear-resistant sheet shaft is reduced three times, including the reduction of the speed reducer, the reduction between the output shaft of the speed reducer and the bevel gear, and the reduction between the output end of the worm and the input end worm gear of the wear-resistant sheet shaft; Further, the rotating number detection device arranged on the speed reducer is an electromagnetic proximity switch, and the rotating number detection device arranged on the motor is an encoder or a thickness gauge.

[0009] The present application has the positive effect that: by setting the side guide plate body opening detection device, the wear-resistant piece rotating device can be started to rotate under the control of the controller after the two side guide plate bodies are opened; by setting the number of rotations detection device on the wear-resistant piece rotating device, the wear-resistant piece can be rotated according to the set pulse number in the controller, and automatically stopped when the rotation reaches the set pulse number, in particular, the maximum chord on the wear-resistant piece each time is less than or equal to the thickness of the strip steel, so that the wear marks between the adjacent strip steel and the wear-resistant piece are superimposed together, and finally the same depth wear mark is obtained, and after rotating 180°, the thickness wear mark will obtain a new plane outside the rotating shaft, which is beneficial to continue to use on the regenerated plane, and the new wear-resistant piece can be replaced before the regenerated plane approaches the plane where the side guide plate is located; by setting the front strip steel passing detection sensor above the roller way at the front end of the side guide plate body in the strip steel flowing direction, the arrival of the strip steel can be detected before the strip steel enters between the two side guide plates, which is beneficial to control the side guide plate body to approach the two sides of the strip steel; by setting the rear strip steel passing detection sensor above the roller way at the end of the side guide plate body in the strip steel flowing direction, the feedback to the controller can be realized after the strip steel passes the end of the side guide plate body, and under the control of the controller, the hydraulic cylinder drives the two side guide plate bodies to open; by the rotation of the wear-resistant piece rotating device, the rotation can be carried out according to the calculated minimum rotation angle; by three times of speed reduction of the output rotating speed of the wear-resistant piece rotating shaft, the opening and stopping of the small angle rotation can be realized, and the over-angle rotation caused by inertia can be prevented, and in the three times of speed reduction process, the direction can be changed at the same time, and finally the output end is extended to the inside of the side guide plate, and at the same time, a plurality of worm gears can be connected through the shaft coupling to synchronously drive a plurality of wear-resistant piece rotating shafts; by using the present application, a plurality of grooves on the wear-resistant piece can be connected into a regenerated plane, and as long as the thickness allows, the new plane can be repeatedly used for multiple times, which not only reduces the use amount of the wear-resistant piece, prolongs the service life of the wear-resistant piece, but also reduces the frequency of replacing the wear-resistant piece, greatly reduces the downtime, prolongs the operation efficiency of the equipment, improves the production capacity of the production line, and increases the production profit. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 Structure diagram of the inside of the single side guide plate body.

[0011] Figure 2 Structure diagram of a group of wear-resistant piece rotating devices on the outside of the single side guide plate body.

[0012] Figure 3 Structure diagram of the inside of the single side guide plate body.

[0013] Figure 4 Structure diagram of the inside of the single side guide plate body.

[0014] Figure 5 Structure diagram of the inside of the single side guide plate body. Figure 3 ​

[0015] Figure 6 Schematic diagram of ratchet and pawl structure arranged between wear-resistant sheet rotating shaft and wear-resistant sheet.

[0016] Figure 7 Schematic diagram of cross-sectional structure along Figure 1 B-B direction.

[0017] Figure 8 Schematic diagram of cross-sectional structure along Figure 4 C-C direction.

[0018] Figure 9 Schematic diagram of surface condition of wear-resistant sheet after use.

[0019] Figure 10 Position structure top view of roller way, side guide body and hydraulic cylinder thereof.

[0020] Figure 11 Schematic diagram of use condition of prior art.

[0021] Explanation of reference numerals: 10-roller way, 11-side guide body, 11a-position of side guide body after opening, 12-side guide, 13-strip steel, 14-hydraulic cylinder, 15-side guide body opening detection device, 16-wear-resistant sheet, 17-wear groove, 18-position above roller way, 19-strip steel passing detection sensor, 20-wear-resistant sheet rotating device, 21-motor, 22-reducer, 23-reducer output shaft bevel gear, 24-worm input shaft bevel gear, 25-worm, 26-worm wheel, 27-wear-resistant sheet rotating shaft, 28-rotation number detection device, 29-coupling, 30-stabilizer, 31-stabilizing bolt, 32-locking nut, 33-side guide body inner plate, 34-regeneration plane, 41-ratchet, 42-pawl, 43-slope surface, 44-fixing pin. DETAILED DESCRIPTION

[0022] The technical solution of the present application will be described in detail below with reference to the accompanying drawings.

[0023] The technical solution of the present application is a wear-resistant sheet rotating method for a side guide with no groove after use and capable of being reused multiple times, Figure 1 is a schematic diagram of inner side structure of a single side guide body, Figure 2 is a schematic diagram of a wear-resistant sheet rotating device structure of a single side guide body outer side, Figure 3 is a schematic diagram of a wear-resistant sheet rotating device of a side guide body inner part, Figure 4It is a top view structural schematic diagram of a single-sided side guide plate body, and the side guide plate wear-resistant sheet rotating device comprises: a side guide plate body 11 arranged on both sides of a strip steel roller 10, a hydraulic cylinder 14 connected to both outer sides of the side guide plate body 11, a wear-resistant sheet rotating device 20 arranged in the side guide plate body 11 and comprising a motor 21, and a controller, a plurality of wear-resistant sheet notches are arranged on the strip steel side guide plate 12 on both sides, a wear-resistant sheet rotating shaft 27 is arranged at a central position in each notch, a wear-resistant sheet 16 is arranged on the wear-resistant sheet rotating shaft 27, the plurality of wear-resistant sheets 16 on both sides are respectively higher than the plane of the side guide plate 12 in thickness, a side guide plate body opening detection device 15 is arranged between both outer sides of the side guide plate body 11 and the hydraulic cylinder 14, a rotating number detection device 28 is arranged on the wear-resistant sheet rotating device 20, a front strip steel passing detection sensor and a rear strip steel passing detection sensor 19 are arranged at front and rear positions of the side guide plate body 11 on the roller 10, the side guide plate body opening detection device 15, the rotating number detection device 28, the front strip steel passing detection sensor and the rear strip steel passing detection sensor 19 are connected with the controller, and the specific control steps are as follows: 1), when the strip steel 13 passes between the two side guide plate bodies 11, the front strip steel passing detection sensor detects that the strip steel is about to enter between the two side guide plate bodies 11, and feeds back to the controller, the controller controls the side guide plate to approach the two sides of the strip steel 13 under the driving of the hydraulic cylinder 14, the strip steel 13 contacts the outer surfaces of the plurality of wear-resistant sheets 16, and linear scratches are respectively left on the outer surfaces of the plurality of wear-resistant sheets 16; 2), after the strip steel 13 passes between the two side guide plate bodies 11, the rear strip steel passing detection sensor 19 detects, the controller controls the hydraulic cylinder 14 on the outer side of the side guide plate body 11 to act, the hydraulic cylinder 14 drives the side guide plate body 11 to synchronously open to both sides, respectively, the side guide plate body opening detection device 15 detects that the side guide plate body 11 is opened, and feeds back to the controller; 3), the controller sends an instruction to the rotating motor, the wear-resistant sheet rotating device rotates a small angle according to the setting in the controller, the rotating angle is detected by the rotating number detection device 28, and the rotating angle feeds back to the controller after reaching the position, 4), Figure 9 It is a schematic diagram of the surface condition of the wear-resistant sheet after use, the above-mentioned actions 1)-3) are repeated, the maximum chord on the wear-resistant sheet 16 is less than or equal to the thickness of the strip steel 13 each time, the minimum rotating angle of the wear-resistant sheet 16 is between 1°±0.5°, after a plurality of rotations, a regenerated plane lower than the thickness of the original wear-resistant sheet 16 is formed on the outer periphery of the wear-resistant sheet rotating shaft 27 after rotating 180°, the height difference between the regenerated plane height and the thickness of the original wear-resistant sheet 16 is H, the regenerated plane can be reused, and the above-mentioned actions 1)-3) are continuously repeated; 5), the above-mentioned actions 1)-4) can be repeated for multiple times, until the wear-resistant sheet 16 is replaced with a new one before the surface of the wear-resistant sheet approaches the surface of the side guide plate.

[0024] Figure 5 is the cross-sectional structure diagram along the A-A direction of Figure 3 the position relationship between the stabilizer and the wear plate 16 and the side guide plate body inner plate 33, the back of the wear plate 16 is provided with a stabilizer for maintaining the verticality of the wear plate surface; the position of the stabilizer in the side guide plate body 11, the stabilizer is arranged on the side guide plate body inner plate 33 inside the side guide plate 12, a plurality of screw holes are arranged on the side guide plate body inner plate 33 below the wear plate rotating shaft 27 at the rear side of each wear plate 16, a plurality of stabilizing bolts 31 are respectively screwed on the plurality of screw holes, and a locking nut 32 is screwed on the stabilizing bolt 31 on the other side of the side guide plate body inner plate 33, in order to prevent the wear plate 16 from tilting outward under the impact of the strip steel 13, the gap between the end of the stabilizing bolt 31 and the back of the wear plate 16 is locked by the locking nut 32, and the gap is set to 0.3mm in this embodiment.

[0025] Figure 6 is a schematic diagram of the ratchet and pawl structure arranged between the wear plate rotating shaft and the wear plate, Figure 7 is the cross-sectional structure diagram along the B-B direction of Figure 1 , Figure 7 which shows the position of the ratchet and pawl on the wear plate, the ratchet and pawl arranged between the wear plate rotating shaft 27 and the wear plate 16 can prevent the wear plate 16 from reversing.

[0026] The side guide plate body opening detection device 15 is a proximity switch, a limit switch, a pressure sensor, and a photoelectric sensor, and in this embodiment, a proximity switch is used. For specific position, refer to Figure 10 .

[0027] The front strip passing detection sensor is arranged at the front position of the side guide plate body 11, and the rear strip passing detection sensor 19 is arranged at the end position of the side guide plate body 11, the front strip passing detection sensor and the rear strip passing detection sensor 19 are photoelectric sensors, and the front strip passing detection sensor and the rear strip passing detection sensor 19 are traditional photoelectric switches.

[0028] Referring to Figure 2 , Figure 3 , the wear plate rotating device 20 includes a motor 21 and a speed reducer 22, Figure 8 is the cross-sectional structure diagram along the C-C direction of Figure 4 , Figure 8Shown in the figure is the positional relationship between the rotation detection device 28 and the reducer teeth. The rotation detection device 28 is arranged on the reducer 22 or the motor 21. The rotation detection device 28 detects the number of rotation pulses of the motor 21 or the reducer 22. The number of pulses of the motor 21 or the reducer 22 is the number of pulses per 1° calculated based on the motor speed and the number of reducer gears. The number of pulses of the rotation angle is set in the controller. The gear tooth number detection sensor detects the number of rotation pulses through the number of teeth of the reducer. After the set number of pulses is completed, the motor automatically stops rotating. There is a 3mm gap between the gear tooth number detection sensor and the gear.

[0029] In this embodiment, the gear speed detection sensor is arranged on the reducer, and the rotation angle of each wear-resistant plate set in the controller is: the number of pulses obtained by dividing the number of pulses of the wear-resistant plate rotating one circle after three speed changes by 360 (one circle). The speed detection device 28 arranged outside the gear of the reducer will control the rotation angle. In this embodiment, the speed detection device 28 is an electromagnetic proximity switch. In addition, the rotation angle can also be controlled by using a thickness gauge or an encoder arranged on the servo motor.

[0030] Reference Figure 2 、 Figure 3 The output of the wear-resistant plate shaft is decelerated three times, including deceleration by the reducer, secondary deceleration between the reducer output shaft bevel gear 23 and the worm input shaft bevel gear 24, and tertiary deceleration between the worm 25 and the worm wheel 26.

[0031] The present invention has the following positive effects: by setting the side guide plate main body opening detection device 15, after the side guide plate main bodies 11 on both sides are opened, the wear-resistant plate rotating device 20 can be started to rotate under the control of the controller; by setting the number of revolution detection device 28 on the wear-resistant plate rotating device 20, it can rotate according to the number of pulses set in the controller, and automatically stop when the rotation reaches the set number of pulses, especially by making the maximum chord on the wear-resistant plate 16 each time less than or equal to the thickness of the strip steel 13, the wear marks between the adjacent strip steel 13 and the wear-resistant plate 16 can be superimposed together, and finally the same depth of wear can be achieved. After the groove 17 rotates 180 degrees, the thickness wear mark will obtain a regeneration plane 34 on the outside of the rotating shaft, which is conducive to continued use on the regeneration plane 34. A new wear-resistant sheet 16 can be replaced before the regeneration plane 34 approaches the plane where the side guide plate 12 is located; by arranging a front strip passing detection sensor above the roller 10 at the front end of the side guide plate body 11 in the flow direction of the strip 13, the arrival of the strip 13 can be detected before the strip 13 enters between the side guide plates 12 on both sides, which is conducive to controlling the side guide plate body 11 to approach the two sides of the strip 13. A strip passing detection sensor 19 is set above or on both sides of the roller 10 at the end of the main body 11, which can feed back to the controller after the strip 13 passes through the end of the side guide plate main body 11. Under the control of the controller, the hydraulic cylinder 14 is used to drive the side guide plate main bodies 11 on both sides to open; by rotating the wear-resistant plate rotating device 20, it can be rotated according to the calculated minimum rotation angle; by decelerating the output speed of the wear-resistant plate shaft 27 three times, it is beneficial to start and stop small-angle rotation, and can prevent over-angle rotation caused by inertia. During the three deceleration processes, the direction can be changed at the same time, and finally The output end is extended to the inner side of the side guide plate 12. At the same time, multiple worm gears 25 are set by using the coupling 29 to synchronously drive multiple wear-resistant plate shafts 27. By utilizing the present invention, multiple grooves on the wear-resistant plate 16 can be connected into a regeneration plane 34. As long as the thickness allows, it can be repeatedly used on the regeneration plane 34. This not only reduces the usage of the wear-resistant plate 16 and extends the service life of the wear-resistant plate 16, but also reduces the frequency of replacing the wear-resistant plate 16, greatly reduces downtime, extends the operating efficiency of the equipment, and can improve the output of the production line and increase production profits.

Claims

1. A method for rotating side guide wear-resistant sheets that can be reused multiple times without grooves after use. The side guide wear-resistant sheet rotation and utilization device comprises: side guide body arranged on both sides of the strip roller, hydraulic cylinders connected to the two outer sides of the side guide body, a wear-resistant sheet rotation device including a motor and a controller arranged in the side guide body, multiple wear-resistant sheet notches are opened on the strip steel side guides on both sides, wear-resistant sheet rotating shafts are respectively arranged at the center positions of the notches, and wear-resistant sheets are arranged on the wear-resistant sheet rotating shafts. The multiple wear-resistant sheets on both sides are respectively higher in thickness than the plane of the side guides on which they are located. The characteristics are as follows: A side guide plate main body opening detection device is provided between the two outer sides of the side guide plate main body and the hydraulic cylinder, a rotation detection device is provided on the wear-resistant plate rotating device, and a front strip steel passing detection sensor and a rear strip steel passing detection sensor are respectively provided at the front and rear positions of the side guide plate main body on the roller. The side guide plate main body opening detection device, the rotation detection device and the strip steel passing detection sensor are respectively connected to the controller. The specific control steps are as follows: 1) Before the strip passes between the two side guide plates, the front strip passes through the detection sensor to detect that the strip is about to enter between the two side guide plates, and the feedback is sent to the controller. The controller controls the side guide plates to move closer to the two sides of the strip under the drive of the hydraulic cylinder. The strip contacts the outer surfaces of multiple wear-resistant plates, leaving linear wear marks on the outer surfaces of multiple wear-resistant plates. 2) After the strip passes between the two side guide bodies, it is detected by the subsequent strip passing detection sensor. The controller controls the hydraulic cylinders on the outside of the side guide bodies to operate. The hydraulic cylinders drive the side guide bodies to open to both sides synchronously. After the side guide body opening detection device detects the side guide body opening, it feedbacks to the controller. 3) The controller sends a command to the rotating motor, and the wear-resistant plate rotating device rotates in a small angle according to the wear-resistant plate rotation set in the controller. The rotation angle is detected by the speed detection device and fed back to the controller after the rotation angle is in place; 4) Repeat the above steps 1)-3), with the maximum chord on the wear-resistant sheet being less than or equal to the thickness of the strip steel each time, and the minimum rotation angle of the wear-resistant sheet being between 1°±0.5°. After multiple rotations, the wear-resistant sheet surface on the outer periphery of the wear-resistant sheet shaft forms a regenerated plane that is lower than the thickness of the original wear-resistant sheet after rotating 180°. The regenerated plane can be reused, and the above steps 1)-3) are repeated. 5) The above steps 1)-4) can be repeated several times until the surface of the wear-resistant sheet approaches the surface of the side guide plate and a new wear-resistant sheet is replaced.

2. The method for rotating the side guide wear-resistant sheet without grooves and capable of being reused multiple times according to claim 1, characterized in that: A ratchet and a pawl are provided between the wear-resistant plate rotating shaft and the wear-resistant plate to prevent the wear-resistant plate from rotating backwards.

3. The method for rotating the side guide wear-resistant sheet without grooves and capable of being reused multiple times according to claim 1, characterized in that: The back of the wear-resistant sheet is provided with a stabilizer for maintaining the surface of the wear-resistant sheet vertical.

4. The method for rotating the side guide wear-resistant sheet without grooves and capable of being reused multiple times according to claim 1, characterized in that: The side guide plate main body opening detection device is a proximity switch, a limit switch, a pressure sensor, and a photoelectric sensor.

5. The method for rotating the side guide wear-resistant sheet without grooves and capable of being reused multiple times according to claim 1, characterized in that: The front strip steel passing detection sensor is arranged at the front position of the side guide plate body, and the rear strip steel passing detection sensor is arranged at the end position of the side guide plate body. The front strip steel passing detection sensor and the rear strip steel passing detection sensor are photoelectric sensors.

6. The method for rotating the side guide wear-resistant sheet without grooves and capable of being reused multiple times according to claim 1, characterized in that: The wear-resistant plate rotation device includes a motor and a reducer. The speed detection device is arranged on the reducer or the motor. The speed detection device detects the number of rotation pulses of the motor or the reducer, calculates the number of pulses of 1° according to the motor speed or the number of gears of the reducer, and sets the number of pulses of the rotation angle in the controller.

7. The method for rotating the side guide wear-resistant sheet without grooves and capable of being reused multiple times according to claim 1, characterized in that: The output transmission of the wear-resistant plate shaft is decelerated three times, including deceleration by a reducer, deceleration by a bevel gear between the output shaft of the reducer and the worm, and deceleration between the output end of the worm and the worm wheel at the input end of the wear-resistant plate shaft.

8. The method for rotating the side guide wear-resistant sheet without grooves and capable of being reused multiple times according to claim 6, characterized in that: The speed detection device arranged on the reducer is an electromagnetic proximity switch, and the speed detection device arranged on the motor is an encoder or a thickness gauge.

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