A grinding device and method for increasing the roughness value of a roll surface

Abstract

The application discloses a kind of grinding device and method for improving the roughness of roll surface, comprising: articulated seat;Swing arm, with first working state and first idle state, one end of swing arm is hinged to articulated seat, the other end is equipped with grinding wheel and driving mechanism, grinding wheel is used to protrude swing arm with the side of roll surface contact;Driving mechanism is connected with grinding wheel to drive grinding wheel to rotate;Support arm, with first state and second state, one end of support arm is hinged to swing arm, and the other end is provided with action arm;When support arm is in first state, the side of grinding wheel for contacting with roll surface protrudes action arm;When support arm is in second state, the side of grinding wheel for contacting with roll surface does not protrude action arm, so that action arm can contact with roll surface.Grinding wheel rotation can improve the roughness of roll surface to Ra12.5 microns, meet the use requirement of rough rolling work roll in new roll mode, so as to reduce billet slip, improve the stability and efficiency of rolling process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot rolling plate rolling equipment, in particular to a grinding device and method for improving the roughness value of a roller surface. BACKGROUND

[0002] A hot rolling plate rolling production line is generally equipped with one or more rough rolling mills. Since the rough rolling mill has a large reduction, the rough rolling work roll under the new roll mode is too smooth and is prone to cause billet slip. According to experience, when the steel quantity passing through the upper and lower new rolls exceeds about 3000 tons, the roller slip condition basically disappears, and at this time, the roller surface roughness is detected to be about Ra12.5 microns. Therefore, it is a relatively ideal state to ensure that the surface roughness of the new roll before going online is Ra12.5 microns.

[0003] Generally, the surface roughness of the roller after grinding by a common grinding machine is generally below Ra2.0 microns, which cannot meet the surface roughness requirement of the rough rolling work roll. SUMMARY

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

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

[0006] A grinding device for improving the roughness value of a roller surface, comprising: a hinged seat; an oscillating arm having a first working state and a first idle state, one end of the oscillating arm being hinged to the hinged seat to realize switching between the first working state and the first idle state, the other end of the oscillating arm being provided with a grinding wheel and a driving mechanism, the grinding wheel being protruded from the oscillating arm on the side for contacting the roller surface; the driving mechanism being connected with the grinding wheel to drive the grinding wheel to rotate; a support arm having a first state and a second state, one end of the support arm being hinged to the oscillating arm to realize switching between the first state and the second state, the other end of the support arm being provided with an action arm; when the support arm is in the first state, the grinding wheel is protruded from the action arm on the side for contacting the roller surface; when the support arm is in the second state, the grinding wheel is not protruded from the action arm on the side for contacting the roller surface, so that the action arm can contact the roller surface.

[0007] Further, a support seat is further included, the support seat being provided with a support surface for the oscillating arm in the first idle state to lean on.

[0008] Further, the tension mechanism and the pull rod are provided, the pull rod is installed on the hinged seat or / and the supporting seat; the tension mechanism has a second working state and a second idle state; the bottom of the tension mechanism in the second working state and the second idle state is connected with the pull rod, the upper end of the tension mechanism in the second working state is connected with the swing arm or the supporting arm in the first working state, so that the swing arm is pulled tightly, and the grinding wheel is tightly contacted with the surface of the roller; the upper end of the tension mechanism in the second idle state is connected with the swing arm in the first idle state, so that the swing arm in the first idle state is leaned on the supporting surface.

[0009] Further, the pull rod has a third working state and a third idle state, the pull rod is movably arranged in the hinged seat and the supporting seat to realize the switching of 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 with the bottom of the tension mechanism in the second working state; when the pull rod is in the third idle state, the second connecting ring is connected with the bottom of the tension mechanism in the second idle state; at least part of the pull rod in the third working state and the third idle state is embedded in the hinged seat and the supporting seat.

[0010] Further, the tension mechanism comprises a base rod, a threaded cylinder 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 with the swing arm or the supporting arm in the first working state, the upper end of the threaded cylinder is threadedly connected with the screw rod, and the lower end is threadedly connected with the first threaded rod, so that the first threaded rod and the screw rod are close to or away from each other by rotating the threaded cylinder.

[0011] Further, the supporting arm is provided with a first connecting lug on the side away from the swing arm, and the swing arm is provided with a second connecting lug on the side away from the supporting arm, the first connecting lug is used for being connected with the upper end of the tension mechanism in the second working state, and the second connecting lug is used for being connected with the upper end of the tension mechanism in the second idle state.

[0012] Further, the state switching member is installed on the swing arm and used for switching the state of the supporting arm.

[0013] Further, the state switching member comprises a limiting disc, an adjusting screw rod and a rod head, the limiting disc is connected between the adjusting screw rod and the rod head; the swing arm is provided with a first through hole through which the adjusting screw rod passes, the swing arm is provided with a screw rod seat on the side away from the supporting arm, a limiting space for accommodating the limiting disc is formed between the screw rod seat and the swing arm, the screw rod seat is provided with a second through hole through which the rod head passes, and the thickness of the limiting disc is less than the thickness of the limiting space; the profiles of the first through hole and the second through hole are smaller than the limiting disc, the diameter of the adjusting screw rod is smaller than the first through hole, the diameter of the rod head is smaller than the second through hole, and the supporting arm is provided with a threaded hole threadedly connected with the adjusting screw rod.

[0014] Further, the head of the rod is connected with a hand wheel, the screw rod base is provided with a pin hole for inserting a limiting pin, and the limiting pin is used for limiting the rotation of the hand wheel.

[0015] The application also provides a grinding method for improving the roughness of a roll surface, comprising the following steps: S1, switching the support arm to the second state so that the side of the action arm used for contacting the roll surface does not protrude the action arm; S2, switching the swing arm from the first idle state to the first working state so that the action arm contacts the roll surface; S3, switching the support arm to the first state so that the side of the grinding wheel used for contacting the roll surface protrudes the action arm, and the surface of the grinding wheel contacts the roll surface; S4, driving the grinding wheel to rotate by the driving mechanism, and driving the roll to rotate by the roll driving mechanism; and S5, driving the frame to move along the roll axis together with the hinged seat, the swing arm and the support arm.

[0016] The application has the following beneficial effects:

[0017] The rotation of the grinding wheel can improve the roughness of the roll surface to Ra12.5 microns, meeting the use requirements of the rough rolling work roll in the new roll mode, thereby reducing the billet slip and improving the stability and efficiency of the rolling process. When processing is needed, the support arm can be switched to the second state so that the side of the grinding wheel used for contacting the roll 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 roll surface, avoiding damage caused by the collision between the grinding wheel and the roll surface. After the action arm contacts the roll surface, the support arm is switched to the first state, the side of the grinding wheel used for contacting the roll surface protrudes the action arm, the grinding wheel contacts the roll, and then the rotation of the grinding wheel can polish the roll surface, providing the roughness of the roll surface. The hinged design of the swing arm and the support arm can adapt to rolls of different sizes, has wide applicability, and can be applied to rough rolling mills of various hot rolling coil production lines.

[0018] In addition to the objects, features and advantages described above, the application has other objects, features and advantages. The application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of the application illustrated in the drawings are presented by way of example or for purpose of illustration and not limitation.

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

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

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

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

[0024] Figure 5 is the enlarged view of A of Figure 4

[0025] Figure 6 is the enlarged view of B of Figure 4

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

[0027] Figure 8 is the structure schematic diagram of the state switching piece.

[0028] Legend:

[0029] hinged seat 100, roller 101;

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

[0031] support arm 300, action arm 310, first connecting lug 320, threaded hole 330, avoiding 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] pull rod 600, first connecting ring 610, second connecting ring 620;

[0035] state switching piece 700, adjusting screw rod 710, limiting disc 720, rod head 730, hand wheel 731. DETAILED DESCRIPTION

[0036] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the application.

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] ​​It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications will also change accordingly.

[0039] In addition, the descriptions involving "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0040] Please refer to Figure 1 and Figure 2 In a preferred embodiment of the present application, a grinding device for improving the roughness value of the roll surface is provided, which comprises a hinged 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, as shown in Figure 1 When the swing arm 200 is in the first working state, one end of the swing arm 200 is located above the roll 101. One end of the swing arm 200 is hinged to the hinged seat 100 to realize the switching between the first working state and the first idle state, and the other end is provided with a grinding wheel 210 and a driving mechanism 220. Specifically, the upper end of the hinged seat 100 is provided with a hinged lug, and one end of the swing arm 200 is hinged to the hinged lug through a hinge shaft. As shown in Figure 2 When the swing arm 200 is in the first idle state, the swing arm 200 is away from the roll 101. The side of the grinding wheel 210 used for contacting the roll surface protrudes out of the swing arm 200, as shown in Figure 1 When the swing arm 200 is in the first working state, the side of the grinding wheel 210 used for contacting the roll surface is the bottom side of the grinding wheel 210. The driving mechanism 220 is connected with 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 installed on the swing arm 200 through a rotating shaft, and the driving mechanism 220 drives the grinding wheel 210 to rotate to perform the roughening treatment on the surface of the roll 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 realize the switching between the first state and the second state, and the other end is provided with an action arm 310. As shown in Figure 1 and Figure 3As shown, the support arm 300 is in the first state, the side of the grinding wheel 210 used to contact the roll surface protrudes the action arm 310. As shown in Figure 4 and Figure 6 As shown, the support arm 300 is in the second state, the side of the grinding wheel 210 used to contact the roll surface does not protrude the action arm 310, so that the action arm 310 can contact the roll surface.

[0043] The rotation of the grinding wheel 210 can increase the roughness of the roll surface to Ra12.5 microns, which meets the use requirements of the rough rolling work roll in the new roll mode, thereby reducing the billet slip and improving the stability and efficiency of the rolling process. When processing is needed, 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 roll 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 roll surface, avoiding damage caused by the collision between the grinding wheel 210 and the roll surface. After the action arm 310 contacts the roll surface, the support arm 300 is switched to the first state, the side of the grinding wheel 210 used to contact the roll surface protrudes the action arm 310, the grinding wheel 210 contacts the roll, and then the rotation of the grinding wheel 210 can polish the roll surface to provide the roughness of the roll surface. The articulated design of the swing arm 200 and the support arm 300 can adapt to different sizes of rolls, has wide applicability, and can be applied to rough rolling mills of various hot rolling coil production lines.

[0044] Referring to Figure 1 and Figure 3 In some embodiments of the present application, a support seat 400 is further included, which is provided with a support surface 410 for the swing arm 200 in the first idle state to lean on. In order to improve the limiting of the swing arm 200 in the first idle state, a groove is provided on the upper end of the support seat 400 for the swing arm 200 in the first idle state to be embedded in, and 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 its idle state is stable.

[0045] Referring to Figure 1 In further embodiments of the present application, a tension mechanism 500 and a pull rod 600 are further included, and the pull rod 600 is installed on the articulated seat 100 and / or the support seat 400. In the present embodiment, in order to stabilize the force of the pull rod 600, the pull rod 600 is installed on the articulated seat 100 and the support seat 400. The tension mechanism 500 has a second working state and a second idle state; referring to Figure 1 and Figure 3 The bottom of the tension mechanism 500 in the second working state and the second idle state is connected with the pull rod 600. As shown in Figure 1As shown, the upper end of the tension mechanism 500 in the second working state is connected with the swing arm 200 or the supporting arm 300 in the first working state to apply a tension force 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 tension mechanism 500 in the second idle state is connected with the swing arm 200 in the first idle state to make the swing arm 200 in the first idle state lean against the supporting surface 410, so that the swing arm 200 is limited, and the swing arm 200 is prevented from rotating around the hinge to cause damage to the equipment or injury to the staff.

[0046] In further embodiments of the present application, the tension rod 600 includes a third working state and a third idle state, and the tension rod 600 is movably arranged in the hinge seat 100 and the supporting seat 400 to switch between the third working state and the third idle state. The tension rod 600 in the third working state and the third idle state has at least part of the structure embedded in the hinge seat 100 and the supporting seat 400, so that the tension rod 600 in the two states is more balanced in force, and local stress concentration is avoided. The tension rod 600 is provided with a first connecting ring 610 and a second connecting ring 620. The hinge seat 100 and the supporting seat 400 are provided with movable holes for the movement of the tension rod 600, and the inner walls of the movable holes are further provided with avoiding grooves for the movement of the first connecting ring 610 and the second connecting ring 620, so as to realize the horizontal movement of the tension rod 600, avoid structural interference, and simultaneously arrange the tension rod 600 in the movable holes of the hinge seat 100 and the supporting seat 400, which also plays a role in aligning the hinge seat 100 and the supporting seat 400.

[0047] As shown in FIG. 6, when the tension rod 600 is in the third working state, the first connecting ring 610 is connected with the bottom of the tension mechanism 500 in the second working state. Figure 1 As shown in FIG. 6, when the tension rod 600 is in the third working state, the first connecting ring 610 is connected with the bottom of the tension mechanism 500 in the second working state. Figure 3 As shown in FIG. 6, when the tension rod 600 is in the third idle state, the second connecting ring 620 is connected with the bottom of the tension mechanism 500 in the second idle state. In the third idle state, one end of the tension rod 600 is retracted into the hinge seat 100, so that it does not protrude from the side of the hinge seat 100 facing the roller 101, thereby avoiding interference with the space on the side of the hinge seat 100 facing the roller 101. By moving the tension rod 600 to adapt to the connection in different positions, the length of the tension rod 600 can be reduced, and the length of the tension rod 600 is prevented from being too long to cause structural interference or occupy more space, thereby affecting the compactness of the structure.

[0048] Referring to FIG. 6, Figure 3In further embodiments of the present application, the tension mechanism 500 comprises a base rod 510, a threaded cylinder 520 and a screw rod 530. The base rod 510 is provided with a first threaded rod 511 at the upper end, and is connected with the pull rod 600 at the lower end. Specifically, the lower end of the base rod 510 is hingedly connected with the first connecting ring 610 or the second connecting ring 620 through a connecting shaft. The screw rod 530 is connected with the swing arm 200 or the support arm 300 in the first working state at the upper end. The threaded cylinder 520 is threadedly connected with the screw rod 530 at the upper end, and is threadedly connected with the first threaded rod 511 at the lower end. By rotating the threaded cylinder 520, the first threaded rod 511 and the screw rod 530 can be moved closer to or away from each other. By rotating the threaded cylinder 520, the contact force between the grinding wheel 210 and the roller surface can be adjusted, so that the beating pressure value can be adjusted to meet the requirements and improve the adaptability of the device.

[0049] With reference to Figure 7 In further embodiments of the present application, the side of the support arm 300 away from the swing arm 200 is provided with a first connecting lug 320, and the side of the swing arm 200 away from the support arm 300 is provided with a second connecting lug 230. The first connecting lug 320 is used to be connected with the upper end of the tension mechanism 500 in the second working state, and the second connecting lug 230 is used to be connected with the upper end of the tension mechanism 500 in the second idle state. Specifically, the first connecting lug 320 is hingedly connected 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 lug 230 is hingedly connected with the upper end of the screw rod 530 of the tension mechanism 500 in the second idle state through a connecting shaft, which facilitates the position of the self-adaptive structure, so that structural interference does not occur when the length of the tension mechanism 500 is adjusted.

[0050] With reference to Figure 1 In further embodiments of the present application, a state switching member 700 is further included, which is installed on the swing arm 200 and is used to adjust the relative position of the support arm 300 and the swing arm 200, so as to switch the state of the support arm 300, i.e. to drive the support arm 300 to switch between the first state and the second state.

[0051] With reference to Figure 3 , Figure 4 and Figure 8In further embodiments of the present application, the state switching piece 700 comprises an adjusting screw 710, a limiting disc 720 and a rod head 730, the limiting disc 720 is connected between the adjusting screw 710 and the rod head 730, and the adjusting screw 710, the limiting disc 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 the side of the swing arm 200 facing away from the support arm 300 is provided with a screw seat 250, a limiting space 251 for accommodating the limiting disc 720 is formed between the swing arm 200 and the screw seat 250, 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 disc 720 is less than the thickness of the limiting space 251; the profiles of the first through hole 240 and the second through hole 252 are smaller than the limiting disc 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 for threadedly connecting with the adjusting screw 710. Since the thickness of the limiting disc 720 is less than the thickness of the limiting space 251, the profiles of the first through hole 240 and the second through hole 252 are smaller than the limiting disc 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, so that the limiting disc 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. As shown in FIGS. Figure 4 and Figure 5 When the adjusting screw 710 is screwed to drive the support arm 300 to switch to the first state, the adjusting screw 710, the limiting disc 720 and the rod head 730 can rotate along with the support arm 300 at the hinge to avoid structural interference.

[0052] Referring to FIG. 7, the side of the swing arm 200 facing the support arm 300 is provided with an open slot 260 for the support arm 300 to be embedded in, as shown in FIG. Figure 3 When the support arm 300 is embedded in the open slot 260, the grinding wheel 210 protrudes out of the support arm 300. Figure 7As shown, the action arm 310 is provided with a relief hole 340 for the grinding wheel 210 to move in, so that the action arm 310 can rotate and avoid the grinding wheel 210, avoiding structural interference. When the support arm 300 is in the second state, the grinding wheel 210 is completely in the relief hole 340, so that the side of the grinding wheel 210 used to contact the roll surface does not protrude from the action arm 310, so that the action arm 310 can contact the roll surface, and at this time the grinding wheel 210 is hidden in the relief hole 340 and will not contact and collide with the roll surface.

[0053] Referring to Figure 5 In further embodiments of the present application, the rod head 730 is connected with a hand wheel 731, so as to facilitate the operation of rotating and adjusting the screw rod 710. The screw rod seat 250 is provided with a pin hole for inserting a limiting pin 253, and the limiting pin 253 is used to limit the rotation of the hand wheel 731. When it is not necessary to adjust the relative position of the support arm 300 and the swing arm 200, the limiting pin 253 can be inserted into the pin hole to limit the rotation of the hand wheel 731, so as to ensure the stability of the state of the support arm 300.

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

[0055] S1, switch the support arm 300 to the second state, so that the side of the grinding wheel 210 used to contact the roll surface does not protrude from the action arm 310. In the initial state, as shown, 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 with the second connecting lug 230 of the swing arm 200, the lower end is connected with the second connecting ring 620, and the swing arm 200 is in the first idle state; then operate the state switching piece 700 to adjust the relative position of the support arm 300 and the swing arm 200, so as to switch 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 roll surface. Specifically, before step S2, the tension mechanism 500 needs to be removed, and the swing arm 200 is manually or by operating a mechanical arm to rotate and switch the hinged part of the swing arm 200 to the first working state, so that the position of the swing arm 200 installed with the grinding wheel 210 moves 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, avoiding the grinding wheel 210 from being damaged due to collision with the roll 101 when the swing arm 200 rotates. The grinding wheel 210 is generally strong and easy to damage, while the action arm 310 is usually made of steel and is not easy to damage.

[0057] S3, switch the support arm 300 to the first state, so that the side of the grinding wheel 210 used to contact the roll surface protrudes the action arm 310, and the surface of the grinding wheel 210 contacts the roll surface. Specifically, operate the state switching piece 700, adjust the relative position of the support arm 300 and the swing arm 200, so as to switch the support arm 300 to the first state, so that the grinding wheel 210 protrudes the action arm 310 of the support arm 300, so that the grinding wheel 210 contacts the roll 101. Then also need to move the pull rod 600 to the third working state, connect the lower end of the tension mechanism 500 with the first connecting ring 610, connect the upper end with the first connecting lug 320 of the support arm 300, and adjust the length of the tension mechanism 500 to adjust the contact force of the grinding wheel 210 and the roll 101.

[0058] S4, the driving mechanism 220 drives the grinding wheel 210 to rotate, and the roll driving mechanism drives the roll to rotate, so as to realize the circumferential roughening.

[0059] S5, the frame drives the hinged seat 100, the swing arm 200 and the support arm 300 to move along the roll axis. It can be understood that the hinged seat 100 and the support seat 400 are fixedly installed on the frame of the grinding machine, and the frame moves along the roll axis, which can drive the hinged seat 100, the support seat 400, the swing arm 200 and the support arm 300 to move together, so as to comprehensively roughen the roll 101.

[0060] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A grinding device for increasing the roughness value of a roll surface, characterized in that, The utility model relates to a grinding device for roller surface, comprising: a hinged seat (100); a swing arm (200) having a first working state and a first idle state, one end of the swing arm (200) being hinged to the hinged seat (100) to realize switching of the first working state and the first idle state, the other end of the swing arm (200) being provided with a grinding wheel (210) and a driving mechanism (220), the grinding wheel (210) being protruded from the swing arm (200) on the side for contacting the surface of the roller, the driving mechanism (220) being connected to the grinding wheel (210) to drive the grinding wheel (210) to rotate; a support arm (300) having a first state and a second state, one end of the support arm (300) being hinged to the swing arm (200) to realize switching of the first state and the second state, the other end of the support arm (300) being provided with an action arm (310); when the support arm (300) is in the first state, the grinding wheel (210) is protruded from the action arm (310) on the side for contacting the surface of the roller, and the swing arm (200) is provided with an open slot (260) on the side facing the support arm (300) to embed the support arm (300); when the support arm (300) is in the second state, the grinding wheel (210) is not protruded from the action arm (310) on the side for contacting the surface of the roller, so that the action arm (310) can contact the surface of the roller; the action arm (310) is provided with a clearance hole (340) for the grinding wheel (210) to move; a state switching member (700) is further included, the state switching member (700) being installed on the swing arm (200) to switch the state of the support arm (300); the state switching member (700) comprises an adjusting screw (710), a limiting disc (720) and a rod head (730), the limiting disc (720) being connected to the middle of 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, the swing arm (200) being provided with a screw seat (250) on the side away from the support arm (300), a limiting space (251) for accommodating the limiting disc (720) being formed between the screw seat (250) and the swing arm (200), the screw seat (250) being provided with a second through hole (252) for the rod head (730) to pass through, the thickness of the limiting disc (720) being smaller than the thickness of the limiting space (251); the profiles of the first through hole (240) and the second through hole (252) are smaller than the limiting disc (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 with the adjusting screw (710).

2. The grinding device for increasing the roll surface roughness value according to claim 1, characterized in that, a support seat (400) is further included, the support seat (400) being provided with a support surface (410) for the swing arm (200) in the first idle state to lean on.

3. The roll surface roughness value increasing grinding device according to claim 2, characterized in that, Further comprising a tension mechanism (500) and a tension rod (600), the tension rod (600) is installed on the hinged 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 with the tension rod (600), the upper end of the tension mechanism (500) in the second working state is connected with the swing arm (200) or the support arm (300) in the first working state, so as to apply a tension force 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 with the swing arm (200) in the first idle state, so that the swing arm (200) in the first idle state is inclined and relies on the support surface (410).

4. The roll surface roughness value increasing grinding device according to claim 3, characterized in that, The tension rod (600) comprises a third working state and a third idle state, the tension rod (600) is movably arranged in the hinged seat (100) and the support seat (400) to realize switching between the third working state and the third idle state; the tension rod (600) is provided with a first connecting ring (610) and a second connecting ring (620); when the tension rod (600) is in the third working state, the first connecting ring (610) is connected with the bottom of the tension mechanism (500) in the second working state; when the tension rod (600) is in the third idle state, the second connecting ring (620) is connected with the bottom of the tension mechanism (500) in the second idle state; at least part of the structure of the tension rod (600) in the third working state and the third idle state is embedded in the hinged seat (100) and the support seat (400).

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

6. The roll surface roughness value increasing grinding device according to claim 3, characterized in that, The side of the support arm (300) away from the swing arm (200) is provided with a first connecting lug (320), and the side of the swing arm (200) away from the support arm (300) is provided with a second connecting lug (230); the first connecting lug (320) is used for connecting with the upper end of the tension mechanism (500) in the second working state, and the second connecting lug (230) is used for connecting with the upper end of the tension mechanism (500) in the second idle state.

7. The roll surface roughness value increasing grinding device according to claim 1, characterized in that, The lever head (730) is connected with a hand wheel (731), the screw rod seat (250) is provided with a pin hole for inserting a limiting pin (253), and the limiting pin (253) is used for limiting the rotation of the hand wheel (731).

8. A grinding method for increasing the surface roughness value of a roll, implemented by means of the grinding device for increasing the surface roughness value of a roll according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: S1, switch the support arm (300) to the second state, so that the side of the grinding wheel (210) used to contact the roll surface does not protrude the action arm (310); S2, switch the swing arm (200) from the first idle state to the first working state, so that the action arm (310) contacts the roll surface; S3, switch the support arm (300) to the first state, so that the side of the grinding wheel (210) used to contact the roll surface protrudes the action arm (310), and the surface of the grinding wheel (210) contacts the roll surface; S4, the driving mechanism (220) drives the grinding wheel (210) to rotate, and the roll driving mechanism drives the roll to rotate; S5, the frame drives the articulated seat (100), the swing arm (200) and the support arm (300) to move along the roll axis.

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