Grinding device and method for improving surface roughness value of roller

Abstract

The invention discloses a grinding device and method for improving the surface roughness value of a roller. The swing arm has a first working state and a first idle state, one end of the swing arm is hinged to the hinge seat, the other end is provided with a grinding wheel and a driving mechanism, and the side, used for making contact with the roller surface, of the grinding wheel protrudes out of the swing arm; the driving mechanism is connected with the grinding wheel to drive the grinding wheel to rotate; the supporting arm has a first state and a second state, one end of the supporting arm is hinged to the swing arm, and the other end is provided with an acting arm; when the supporting arm is in the first state, the side, making contact with the roller surface, of the grinding wheel protrudes out of the acting arm. When the supporting arm is in the second state, the side, making contact with the roller surface, of the grinding wheel does not protrude out of the acting arm so that the acting arm can make contact with the roller surface. The roughness of the surface of the roller can be improved to Ra12.5 micrometers through rotation of the grinding wheel, the use requirement of the rough rolling working roller in a new roller mode is met, and therefore steel billet slipping is reduced, and the stability and efficiency of the rolling process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of hot-rolled coil equipment, and in particular to a grinding device and method for improving the surface roughness value of a rolling roller. Background Art

[0002] Hot rolled coil production lines are generally equipped with more than one rough rolling mill. Due to the large amount of rough rolling mill, the rough rolling working rolls in the new roll mode are too smooth and easily cause the billet to slip. According to experience, when the amount of steel passing through the upper and lower new rolls exceeds about 3,000 tons, the roll slippage basically disappears, and the surface roughness of the detected roll is about Ra12.5 microns at this time. Therefore, it is ideal to ensure that the surface roughness of the new roll is Ra12.5 microns before it goes online.

[0003] Usually, the surface roughness of the roll after grinding by an ordinary grinder is generally below Ra2.0 microns, which cannot meet the surface roughness requirements of the rough rolling working roll. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a grinding device for improving the surface roughness value of a rolling mill roll.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A grinding device for improving the surface roughness value of a rolling mill roller comprises: an articulated seat; a swing arm having a first working state and a first idle state, one end of the swing arm being articulated to the articulated seat to realize switching between the first working state and the first idle state, and the other end being provided with a grinding wheel and a driving mechanism, the side of the grinding wheel used for contacting the surface of the rolling mill roller protruding from the swing arm; the driving mechanism being connected to the grinding wheel to drive the grinding wheel to rotate; a supporting arm having a first state and a second state, one end of the supporting arm being articulated to the swing arm to realize switching between the first state and the second state, and the other end being provided with an action arm; when the supporting arm is in the first state, the side of the grinding wheel used for contacting the surface of the rolling mill roller protruding from the action arm; when the supporting arm is in the second state, the side of the grinding wheel used for contacting the surface of the rolling mill roller does not protrude from the action arm, so that the action arm can contact the surface of the rolling mill roller.

[0007] Furthermore, it also includes a support seat, which is provided with a support surface for the swing arm in the first idle state to lean on.

[0008] Furthermore, it also includes a tensioning mechanism and a tensioning rod, wherein the tensioning rod is installed on a hinged seat and / or a supporting seat; the tensioning mechanism has a second working state and a second idle state; the bottom of the tensioning mechanism in the second working state and the second idle state are both connected to the tensioning rod, and the upper end of the tensioning mechanism in the second working state is connected to the swing arm or support arm in the first working state to apply a tensioning force to the swing arm so that the grinding wheel is in close contact with the surface of the roller; the upper end of the tensioning mechanism in the second idle state is connected to the swing arm in the first idle state so that the swing arm in the first idle state is tilted and leans on the support surface.

[0009] Furthermore, the pull rod includes a third working state and a third idle state, and the pull rod is movably inserted into the hinge seat and the support seat to realize the switching between the third working state and the third idle state; the pull rod is provided with a first connecting ring and a second connecting ring; when the pull rod is in the third working state, the first connecting ring is connected to the bottom of the pulling mechanism in the second working state; when the pull rod is in the third idle state, the second connecting ring is connected to the bottom of the pulling mechanism in the second idle state; the pull rod in the third working state and the third idle state has at least part of its structure embedded in the hinge seat and the support seat.

[0010] Furthermore, the pulling mechanism includes a base rod, a threaded barrel and a screw rod, the upper end of the base rod is provided with a first threaded rod, the upper end of the screw rod is connected to the swing arm or support arm in the first working state, the upper end of the threaded barrel is threadedly connected to the screw rod, and the lower end is threadedly connected to the first threaded rod, and the first threaded rod and the screw rod can be moved closer to or farther away from each other by screwing the threaded barrel.

[0011] Furthermore, a first connecting ear is provided on the side of the support arm facing away from the swing arm, and a second connecting ear is provided on the side of the swing arm facing away from the support arm. The first connecting ear is used to connect to the upper end of the tension mechanism in the second working state, and the second connecting ear is used to connect to the upper end of the tension mechanism in the second idle state.

[0012] Furthermore, it also includes a state switching component, which is installed on the swing arm and is used to switch the state of the support arm.

[0013] Furthermore, the state switching component includes a limit plate, an adjusting screw and a rod head, the limit plate is connected between the adjusting screw and the rod head; the swing arm is provided with a first through hole for the adjusting screw to pass through, the side of the swing arm facing away from the support arm is provided with a screw seat, a limiting space for accommodating the limit plate is formed between the screw seat and the swing arm, the screw seat is provided with a second through hole for the rod head to pass through, the thickness of the limit plate is smaller than the thickness of the limiting space; the contours of the first through hole and the second through hole are smaller than the limit plate, the diameter of the adjusting screw is smaller than the first through hole, the diameter of the rod head is smaller than the second through hole, and the support arm is provided with a threaded hole threadedly connected to the adjusting screw.

[0014] Furthermore, the rod head is connected to a hand wheel, and the screw seat is provided with a pin hole for inserting a limit pin, and the limit pin is used to limit the rotation of the hand wheel.

[0015] The present invention also proposes a grinding method for improving the surface roughness value of a rolling mill roller, comprising the following steps: S1, switching the support arm to the second state so that the side of the working arm that contacts the surface of the rolling mill roller does not protrude from the working arm; S2, switching the swing arm from the first idle state to the first working state so that the working arm contacts the surface of the rolling mill roller; S3, switching the support arm to the first state so that the side of the grinding wheel that contacts the surface of the rolling mill roller protrudes from the working arm, and the surface of the grinding wheel contacts the surface of the rolling mill roller; S4, the driving mechanism drives the grinding wheel to rotate, and the rolling mill roller driving mechanism drives the rolling mill roller to rotate; S5, the frame drives the articulated seat, the swing arm and the support arm to move along the axis of the rolling mill roller.

[0016] The present invention has the following beneficial effects:

[0017] The rotation of the grinding wheel can increase the roughness of the roller surface to Ra12.5 microns, meeting the use requirements of the rough rolling working roll in the new roll mode, thereby reducing the slippage of the steel billet and improving the stability and efficiency of the rolling process. When processing is required, the support arm can be switched to the second state first, so that the side of the grinding wheel used to contact the roller surface does not protrude the action arm, so that when the swing arm is switched to the first working state, the action arm will collide with the roller surface to avoid damage caused by the collision and contact between the grinding wheel and the roller surface. After the action arm contacts the roller surface, the support arm is switched to the first state, and the side of the grinding wheel used to contact the roller surface protrudes the action arm, and the grinding wheel contacts the roll. Then the grinding wheel rotates to grind the roll surface and provide the roughness of the roll surface. The articulated design of the swing arm and the support arm enables it to adapt to rolls of different sizes and specifications, and has a wide range of applicability, and can be applied to rough rolling mills of various hot-rolled coil production lines.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the first state of the present invention;

[0021] Figure 2 is a side view of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall structure of the second state of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall structure of the third state of the present invention;

[0024] Figure 5 yes Figure 4 A magnified view of point A;

[0025] Figure 6 yes Figure 4 A magnified view of point B;

[0026] Figure 7 It is a schematic diagram of the structure of the swing arm and the support arm in the exploded state;

[0027] Figure 8 It is a structural diagram of the state switching component.

[0028] Legend:

[0029] Articulated seat 100, roller 101;

[0030] Swing arm 200, grinding wheel 210, driving mechanism 220, second connecting ear 230, first through hole 240, screw seat 250, limiting space 251, second through hole 252, limiting pin 253, opening slot 260;

[0031] Support arm 300, action arm 310, first connection ear 320, threaded hole 330, avoidance hole 340;

[0032] Support seat 400, support surface 410;

[0033] Tension mechanism 500, base rod 510, first threaded rod 511, threaded cylinder 520, screw rod 530;

[0034] A pull rod 600, a first connecting ring 610, and a second connecting ring 620;

[0035] State switching member 700 , adjusting screw 710 , limiting plate 720 , rod head 730 , and hand wheel 731 . DETAILED DESCRIPTION

[0036] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Please refer to Figure 1 and Figure 2 A grinding device for improving the surface roughness value of a rolling mill roller in a preferred embodiment of the present invention includes an articulated seat 100, a swing arm 200 and a support arm 300.

[0041] The swing arm 200 has a first working state and a first idle state. Figure 1 As shown, when the swing arm 200 is in the first working state, one end of the swing arm 200 is located above the roller 101. One end of the swing arm 200 is hinged to the hinge seat 100 to switch between the first working state and the first idle state, and the other end is equipped with a grinding wheel 210 and a driving mechanism 220. Specifically, a hinge ear is provided at the upper end of the hinge seat 100, and one end of the swing arm 200 is hinged to the hinge ear through a hinge shaft. Figure 2 As shown, at this time, the swing arm 200 is in the first idle state, and the swing arm 200 is away from the roller 101. The grinding wheel 210 is used to protrude from the swing arm 200 on one side in contact with the roller surface, such as Figure 1 As shown, when the swing arm 200 is in the first working state, the side of the grinding wheel 210 that contacts the surface of the roller is the bottom side of the grinding wheel 210. The driving mechanism 220 is connected to the grinding wheel 210 to drive the grinding wheel 210 to rotate, and the driving mechanism 220 can be a motor. The grinding wheel 210 is rotatably mounted on the swing arm 200 through a rotating shaft, and the driving mechanism 220 drives the grinding wheel 210 to rotate to roughen the surface of the roller 101.

[0042] The support arm 300 has a first state and a second state. One end of the support arm 300 is hinged to the swing arm 200 to achieve switching between the first state and the second state, and the other end is provided with an action arm 310. Figure 1 and Figure 3As shown, when the support arm 300 is in the first state, the side of the grinding wheel 210 that is in contact with the roller surface protrudes the working arm 310. Figure 4 and Figure 6 As shown, when the support arm 300 is in the second state, the side of the grinding wheel 210 that is used to contact the roller surface does not protrude the working arm 310, so that the working arm 310 can contact the roller surface.

[0043] The rotation of the grinding wheel 210 can increase the roughness of the roller surface to Ra12.5 microns, meeting the use requirements of the rough rolling working roller in the new roller mode, thereby reducing the slippage of the steel billet and improving the stability and efficiency of the rolling process. When processing is required, the support arm 300 can be switched to the second state first, so that the side of the grinding wheel 210 used to contact the roller surface does not protrude the action arm 310, so that when the swing arm is switched to the first working state, the action arm 310 will collide with the roller surface to avoid the grinding wheel 210 from colliding with the roller surface and being damaged. After the action arm 310 contacts the roller surface, the support arm 300 is switched to the first state, the side of the grinding wheel 210 used to contact the roller surface protrudes the action arm 310, the grinding wheel 210 contacts the roller, and then the grinding wheel 210 rotates to grind the roller surface to provide the roughness of the roller surface. The articulated design of the swing arm 200 and the support arm 300 enables it to adapt to rollers of different sizes and specifications, has a wide range of applicability, and can be applied to rough rolling mills of various hot-rolled coil production lines.

[0044] Reference Figure 1 and Figure 3 In some embodiments of the present invention, a support base 400 is further included. The support base 400 is provided with a support surface 410 for the swing arm 200 in the first idle state to lean against. In order to improve the position limitation of the swing arm 200 in the first idle state, a groove is provided at the upper end of the support base 400 for the swing arm 200 in the first idle state to be embedded. The support surface 410 is the bottom surface of the groove. The swing arm 200 in the first idle state is supported by the support surface 410, so that it is stable when idle.

[0045] Reference Figure 1 In a further embodiment of the present invention, a tension mechanism 500 and a pull rod 600 are further included, and the pull rod 600 is installed on the hinge seat 100 and / or the support seat 400. In this embodiment, in order to stabilize the force on the pull rod 600, the pull rod 600 is installed on the hinge seat 100 and the support seat 400. The tension mechanism 500 has a second working state and a second idle state; refer to Figure 1 and Figure 3 The bottom of the pulling mechanism 500 in the second working state and the second idle state is connected to the pull rod 600. Figure 1As shown, the upper end of the tension mechanism 500 in the second working state is connected to the swing arm 200 or the support arm 300 in the first working state to apply tension to the swing arm 200 so that the grinding wheel 210 is in close contact with the surface of the roller. Figure 3 As shown, the upper end of the pulling mechanism 500 in the second idle state is connected to the swing arm 200 in the first idle state, so that the swing arm 200 in the first idle state is tilted and leans on the support surface 410, thereby limiting the swing arm 200 and preventing the swing arm 200 from rotating around the hinge at will to cause damage to the equipment or accidental injury to workers.

[0046] In a further embodiment of the present invention, the pull rod 600 includes a third working state and a third idle state, and the pull rod 600 is movably arranged in the hinge seat 100 and the support seat 400 to realize the switching between the third working state and the third idle state. At least part of the structure of the pull rod 600 in the third working state and the third idle state is embedded in the hinge seat 100 and the support seat 400, so that the force of the pull rod 600 in the two states is more balanced and local stress concentration is avoided. The pull rod 600 is provided with a first connecting ring 610 and a second connecting ring 620. The hinge seat 100 and the support seat 400 are both provided with a movable hole for the pull rod 600 to move, and the inner wall of the movable hole is also provided with an avoidance groove for the first connecting ring 610 and the second connecting ring 620 to move, so as to realize the horizontal movement of the pull rod 600 and avoid structural interference, and the pull rod 600 is simultaneously arranged in the movable holes of the hinge seat 100 and the support seat 400, which also plays an alignment role for the hinge seat 100 and the support seat 400.

[0047] like Figure 1 As shown, when the pull rod 600 is in the third working state, the first connecting ring 610 is connected to the bottom of the pulling mechanism 500 in the second working state. Figure 3 As shown, when the pull rod 600 is in the third idle state, the second connecting ring 620 is connected to the bottom of the tension mechanism 500 in the second idle state. In the third idle state, one end of the pull rod 600 is retracted into the articulated seat 100 so that it does not protrude from the side of the articulated seat 100 facing the tying roller 101, thereby preventing the space on the side of the articulated seat 100 facing the tying roller 101 from being interfered with. By moving the pull rod 600 to adapt it to connections at different positions, the length of the pull rod 600 can be reduced to avoid its excessive length causing structural interference or occupying more space, affecting the compactness of the structure.

[0048] Reference Figure 3In a further embodiment of the present invention, the tension mechanism 500 includes a base rod 510, a threaded barrel 520 and a screw rod 530. The upper end of the base rod 510 is provided with a first threaded rod 511, and the lower end of the base rod 510 is connected to the pull rod 600. Specifically, the lower end of the base rod 510 can be hinged to the first connecting ring 610 or the second connecting ring 620 through a connecting shaft. The upper end of the screw rod 530 is connected to the swing arm 200 or the support arm 300 in the first working state, the upper end of the threaded barrel 520 is threadedly connected to the screw rod 530, and the lower end is threadedly connected to the first threaded rod 511. By screwing the threaded barrel 520, the first threaded rod 511 and the screw rod 530 can be moved closer to or farther from each other. By screwing the threaded barrel 520, the contact force between the grinding wheel 210 and the roller surface can be adjusted, thereby adjusting the roughening pressure value to adjust to the required requirements and improve the adaptability of the device.

[0049] Reference Figure 7 In a further embodiment of the present invention, a first connecting ear 320 is provided on the side of the support arm 300 facing away from the swing arm 200, and a second connecting ear 230 is provided on the side of the swing arm 200 facing away from the support arm 300. The first connecting ear 320 is used to connect with the upper end of the tension mechanism 500 in the second working state, and the second connecting ear 230 is used to connect with the upper end of the tension mechanism 500 in the second idle state. Specifically, the first connecting ear 320 is used to be hinged with the upper end of the screw rod 530 of the tension mechanism 500 in the second working state through a connecting shaft. The second connecting ear 230 is used to be hinged with the upper end of the screw rod 530 of the tension mechanism 500 in the second idle state through a connecting shaft, and the hinge facilitates the position of the adaptive structure, so that no structural interference will occur when the tension mechanism 500 adjusts its length.

[0050] Reference Figure 1 In a further embodiment of the present invention, a state switching member 700 is further included. The state switching member 700 is installed on the swing arm 200 and is used to adjust the relative positions of the support arm 300 and the swing arm 200, thereby switching the state of the support arm 300, that is, driving the support arm 300 to switch between the first state and the second state.

[0051] Reference Figure 3 , Figure 4 and Figure 8In a further embodiment of the present invention, the state switching member 700 includes an adjusting screw 710, a limiting plate 720 and a rod head 730, the limiting plate 720 is connected between the adjusting screw 710 and the rod head 730, and the adjusting screw 710, the limiting plate 720 and the rod head 730 are coaxially arranged. The swing arm 200 is provided with a first through hole 240 for the adjusting screw 710 to pass through, and a screw seat 250 is provided on the side of the swing arm 200 facing away from the support arm 300. A limiting space 251 for accommodating the limiting plate 720 is formed between the screw seat 250 and the swing arm 200, and the screw seat 250 is provided with a second through hole 252 for the rod head 730 to pass through, and the thickness of the limiting plate 720 is smaller than the thickness of the limiting space 251; the contours of the first through hole 240 and the second through hole 252 are smaller than the limiting plate 720, the diameter of the adjusting screw 710 is smaller than the first through hole 240, the diameter of the rod head 730 is smaller than the second through hole 252, and the support arm 300 is provided with a threaded hole 330 threadedly connected to the adjusting screw 710. Since the thickness of the limiting plate 720 is smaller than the thickness of the limiting space 251, the contours of the first through hole 240 and the second through hole 252 are smaller than the limiting plate 720, the diameter of the adjusting screw 710 is smaller than the first through hole 240, and the diameter of the rod head 730 is smaller than the second through hole 252, the limiting plate 720 can be slightly swung in the limiting space 251, the adjusting screw 710 can be swung in the first through hole 240, and the rod head 730 can be slightly swung in the second through hole 252. Figure 4 and Figure 5 As shown, at this time, the adjusting screw 710 is screwed to drive the support arm 300 to switch to the first state, and the adjusting screw 710, the limiting plate 720 and the rod head 730 can rotate along the hinge with the support arm 300 to avoid structural interference. The limiting space 251 limits the movement of the limiting plate 720, so that when the support arm 300 is in the first state, the limiting plate 720 is in contact with the screw seat 250, and when the support arm 300 is in the second state, the limiting plate 720 is in contact with the swing arm 200, so as to avoid the limiting plate 720 moving to drive the support arm 300 to move and cause the support arm 300 to switch its state.

[0052] Referring to FIG. 7 , the swing arm 200 is provided with an opening slot 260 on one side facing the support arm 300 for the support arm 300 to be inserted into. Figure 3 As shown, at this time, the support arm 300 is embedded in the opening groove 260, so that the grinding wheel 210 protrudes from the support arm 300. Figure 7As shown, the action arm 310 is provided with an avoidance hole 340 for the grinding wheel 210 to move, so that the action arm 310 can avoid the grinding wheel 210 when rotating and moving, avoiding structural interference. When the support arm 300 is in the second state, the grinding wheel 210 is completely in the avoidance hole 340, so that the side of the grinding wheel 210 that is used to contact the roller surface does not protrude from the action arm 310, so that the action arm 310 can contact the roller surface. At this time, the grinding wheel 210 is hidden in the avoidance hole 340 and will not contact or collide with the roller surface.

[0053] Reference Figure 5 In a further embodiment of the present invention, the rod head 730 is connected to a hand wheel 731, so as to facilitate the operation of screwing the adjusting screw 710. The screw seat 250 is provided with a pin hole for inserting a limit pin 253, and the limit pin 253 is used to limit the rotation of the hand wheel 731. When the relative position of the support arm 300 and the swing arm 200 does not need to be adjusted, the limit pin 253 can be inserted into the pin hole to limit the rotation of the hand wheel 731, thereby ensuring the stability of the state of the support arm 300.

[0054] A grinding method for improving the surface roughness value of a rolling mill roll comprises steps S1, S2, S3, S4 and S5.

[0055] S1, the support arm 300 is switched to the second state so that the side of the grinding wheel 210 that contacts the roller surface does not protrude from the working arm 310. Figure 3 As shown, at this time, the pull rod 600 is in the third idle state, the tension mechanism 500 is in the second idle state, the support arm 300 is in the first state, the upper end of the tension mechanism 500 is connected to the second connecting ear 230 of the swing arm 200, and the lower end is connected to the second connecting ring 620, and the swing arm 200 is in the first idle state; then the state switching member 700 is operated to adjust the relative positions of the support arm 300 and the swing arm 200, thereby switching the support arm 300 to the second state.

[0056] S2, switch the swing arm 200 from the first idle state to the first working state, so that the action arm 310 contacts the surface of the roller. Specifically, before step S2, the tension mechanism 500 needs to be removed first, and the swing arm 200 is manually or operated by the mechanical arm to rotate the hinge of the hinge seat 100 and switch it to the first working state, so that the position of the swing arm 200 where the grinding wheel 210 is installed moves to above the roll 101. Since the support arm 300 is in the second state at this time, the grinding wheel 210 will not contact the roll 101, and the action arm 310 will contact the roll 101, so as to avoid the grinding wheel 210 rotating with the swing arm 200 and colliding with the roll 101 and causing damage. The grinding wheel 210 has average strength and is easily damaged, while the action arm 310 is usually made of steel and is not easily damaged.

[0057] S3, switch the support arm 300 to the first state, so that the side of the grinding wheel 210 used to contact the roller surface protrudes the action arm 310, and the surface of the grinding wheel 210 contacts the roller surface. Specifically, the operating state switching member 700 is adjusted to adjust the relative position of the support arm 300 and the swing arm 200, so that the support arm 300 is switched to the first state, so that the grinding wheel 210 protrudes from the action arm 310 of the support arm 300, so that the grinding wheel 210 contacts the roller 101. Then, the pull rod 600 needs to be moved to the third working state, the lower end of the tension mechanism 500 is connected to the first connecting ring 610, and the upper end is connected to the first connecting ear 320 of the support arm 300, and the length of the tension mechanism 500 is adjusted to adjust the contact force of the grinding wheel 210 with the roller 101.

[0058] S4, the driving mechanism 220 drives the grinding wheel 210 to rotate, and the roller driving mechanism drives the roller to rotate, thereby achieving circumferential roughening.

[0059] S5, the frame drives the articulated seat 100, the swing arm 200 and the support arm 300 to move along the axis of the roller. It can be understood that the articulated seat 100 and the support seat 400 are fixedly mounted on the frame of the grinder, and the frame moves along the axis of the roller, which can drive the articulated seat 100, the support seat 400, the swing arm 200 and the support arm 300 to move together, so as to perform comprehensive roughening on the roller 101.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grinding device for improving the surface roughness value of a roll, characterized in that: include: Articulated seat (100); A swing arm (200) has a first working state and a first idle state. One end of the swing arm (200) is hinged to a hinge seat (100) to switch between the first working state and the first idle state. A grinding wheel (210) and a driving mechanism (220) are installed at the other end. The grinding wheel (210) is used to protrude from the swing arm (200) on one side in contact with the surface of the rolling roller. The driving mechanism (220) is connected to the grinding wheel (210) to drive the grinding wheel (210) to rotate. The support arm (300) has a first state and a second state. One end of the support arm (300) is hinged to the swing arm (200) to realize switching between the first state and the second state, and the other end is provided with an action arm (310). When the support arm (300) is in the first state, the side of the grinding wheel (210) used to contact the surface of the rolling roller protrudes the action arm (310); when the support arm (300) is in the second state, the side of the grinding wheel (210) used to contact the surface of the rolling roller does not protrude the action arm (310), so that the action arm (310) can contact the surface of the rolling roller.

2. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 1, characterized in that: It also includes a support seat (400), wherein the support seat (400) is provided with a support surface (410) for the swing arm (200) in the first idle state to lean against.

3. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 2, characterized in that: It also includes a tension mechanism (500) and a pull rod (600), wherein the pull rod (600) is installed on the hinge seat (100) or / and the support seat (400); the tension mechanism (500) has a second working state and a second idle state; the bottom of the tension mechanism (500) in the second working state and the second idle state is connected to the pull rod (600), and the upper end of the tension mechanism (500) in the second working state is connected to the swing arm (200) or the support arm (300) in the first working state to apply tension to the swing arm (200) so that the grinding wheel (210) is in close contact with the surface of the roller; the upper end of the tension mechanism (500) in the second idle state is connected to the swing arm (200) in the first idle state so that the swing arm (200) in the first idle state is tilted and leans on the support surface (410).

4. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 3, characterized in that: The pull rod (600) includes a third working state and a third idle state. The pull rod (600) is movably arranged in the hinge seat (100) and the support seat (400) to realize the switching between the third working state and the third idle state. The pull rod (600) is provided with a first connecting ring (610) and a second connecting ring (620). When the pull rod (600) is in the third working state, the first connecting ring (610) is connected to the bottom of the tension mechanism (500) in the second working state. When the pull rod (600) is in the third idle state, the second connecting ring (620) is connected to the bottom of the tension mechanism (500) in the second idle state. In both the third working state and the third idle state, at least part of the structure of the pull rod (600) is embedded in the hinge seat (100) and the support seat (400).

5. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 3, characterized in that: The pulling mechanism (500) comprises a base rod (510), a threaded barrel (520) and a screw rod (530); the lower end of the base rod (510) is connected to the pulling rod (600); the upper end of the base rod (510) is provided with a first threaded rod (511); the upper end of the screw rod (530) is connected to a swing arm (200) or a support arm (300) in a first working state; the upper end of the threaded barrel (520) is threadedly connected to the screw rod (530); the lower end is threadedly connected to the first threaded rod (511); the first threaded rod (511) and the screw rod (530) can be moved closer to or farther away from each other by screwing the threaded barrel (520).

6. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 3, characterized in that: A first connecting ear (320) is provided on the side of the support arm (300) facing away from the swing arm (200), and a second connecting ear (230) is provided on the side of the swing arm (200) facing away from the support arm (300). The first connecting ear (320) is used to connect to the upper end of the pulling mechanism (500) in a second working state, and the second connecting ear (230) is used to connect to the upper end of the pulling mechanism (500) in a second idle state.

7. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 1, characterized in that: It also includes a state switching member (700), which is installed on the swing arm (200) and is used to switch the state of the support arm (300).

8. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 7, characterized in that: The state switching member (700) comprises an adjusting screw (710), a limiting plate (720) and a rod head (730), wherein the limiting plate (720) is connected between the adjusting screw (710) and the rod head (730); the swing arm (200) is provided with a first through hole (240) for the adjusting screw (710) to pass through, and a screw seat (250) is provided on a side of the swing arm (200) facing away from the support arm (300), and a limiting space (250) for accommodating the limiting plate (720) is formed between the screw seat (250) and the swing arm (200). 1), the screw seat (250) is provided with a second through hole (252) for the rod head (730) to pass through, the thickness of the limiting plate (720) is smaller than the thickness of the limiting space (251); the contours of the first through hole (240) and the second through hole (252) are smaller than the limiting plate (720), the diameter of the adjusting screw (710) is smaller than the first through hole (240), the diameter of the rod head (730) is smaller than the second through hole (252), and the support arm (300) is provided with a threaded hole (330) threadedly connected to the adjusting screw (710).

9. The grinding device for improving the surface roughness value of a rolling mill roll according to claim 8, characterized in that: The rod head (730) is connected to a hand wheel (731), and the screw seat (250) is provided with a pin hole for inserting a limit pin (253), and the limit pin (253) is used to limit the rotation of the hand wheel (731).

10. A grinding method for improving the surface roughness value of a roll, characterized in that: The steps include: S1, switching the support arm (300) to a second state so that the side of the grinding wheel (210) in contact with the surface of the roller does not protrude from the working arm (310); S2, switching the swing arm (200) from a first idle state to a first working state, so that the action arm (310) contacts the surface of the roller; S3, switching the support arm (300) to a first state, so that the side of the grinding wheel (210) that is in contact with the surface of the rolling roller protrudes from the action arm (310), and the surface of the grinding wheel (210) is in contact with the surface of the rolling roller; S4, the driving mechanism (220) drives the grinding wheel (210) to rotate, and the roller driving mechanism drives the roller to rotate; S5, the frame drives the articulated seat (100), the swing arm (200) and the support arm (300) to move along the axis of the roller.

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