Roll grinding device

Abstract

The utility model relates to the field of aluminium alloy casting and rolling technology, especially relates to a roll grinding device, including grinding wheel and adjusting assembly, adjusting assembly sets up at the side of roll, grinding wheel sets up on adjusting assembly, adjusting assembly includes support frame body and adjusting pad piece, is provided with the sliding slot on adjusting pad piece, and the one end of adjusting pad piece is slidably connected in the sliding slot, is provided with the support channel on adjusting pad piece, and the radial direction of sliding slot sets up to roll, and the axial direction of support channel sets up to roll, and grinding wheel is slidably arranged in the support channel. In the utility model, the adjusting pad piece is moved along the radial sliding slot through the drive piece II, realizes the accurate control of the surface distance of grinding wheel and roll, the drive piece I drives the grinding wheel to slide along the axial support channel, and the protruding grinding of the different axial positions of roll is adapted, and the W type / M type thermal crown is accurately corrected in two dimensions, and the problem of uneven thickness of plate strip is solved thoroughly.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy casting and rolling technology, and in particular to a roll grinding device. Background Technology

[0002] Aluminum alloy casting and rolling technology occupies an important position in the production of aluminum sheet and strip due to its advantages such as short process, low energy consumption, and significant cost-effectiveness. Among them, the casting and rolling roll is a core component, and the roll surface profile accuracy directly determines the transverse thickness uniformity (i.e., sheet shape) of the cast and rolled billet.

[0003] In actual production, especially when producing wide (e.g., width greater than 1800mm) high-quality billets, the rolls are subjected to strong non-uniform thermal shock: there is a significant temperature difference between the middle and the edge of the roll body, which causes the rolls to produce uneven thermal expansion deformation, usually forming relative protrusions on the drive side and the operating side edge.

[0004] This change in thermal crown causes the actual profile of the roll to deviate from the ideal straight line or the preset parabolic curve, resulting in a regular "W" or "M" shaped distribution of the transverse thickness of the cast-rolled strip. This shape defect has a series of serious consequences: First, within the casting and rolling process, adjusting this defect will generate a large number of defective broken strips or small coils, significantly reducing the yield; Second, billets with shape defects will induce serious problems such as waviness and warping in subsequent cold rolling processes, which not only restricts rolling speed and affects production efficiency, but also leads to a decrease in the yield of downstream processes and frequent quality complaints. Utility Model Content

[0005] In view of the technical problems existing in the background art, the utility model provides a roll grinding device to grind the protruding parts of the roll in order to solve the plate shape defects caused by non-uniform thermal deformation and improve the overall technical level of aluminum alloy casting and rolling production.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: A roll grinding device includes a grinding wheel and an adjusting assembly. The adjusting assembly is disposed on one side of the roll, and the grinding wheel is disposed on the adjusting assembly. The adjusting assembly includes a support frame and an adjusting pad. The adjusting pad is provided with a sliding groove, one end of which is slidably connected to the sliding groove. The adjusting pad is provided with a supporting channel. The sliding groove is disposed in the radial direction of the roll, and the supporting channel is disposed in the axial direction of the roll. The grinding wheel is slidably disposed in the supporting channel.

[0007] Preferably, the adjustment assembly further includes a retractable drive component I, which is detachably mounted on the adjustment pad, and the retractable end of the drive component I is connected to the grinding wheel.

[0008] Preferably, one end of the adjusting pad is recessed and has a slot, and one end of the driving component I is detachably provided with a connecting plate, which is detachably connected to the slot.

[0009] Preferably, a first pad is fixedly provided at one end of the driving component I, and the first pad and the grinding wheel are detachably connected.

[0010] Preferably, the support frame is provided with a connecting groove, and a driving component II is detachably installed in the connecting groove. The connecting groove and the sliding groove are connected, and one end of the driving component II is connected to the adjusting pad.

[0011] Preferably, a second pad is fixedly provided at one end of the drive component II, and the second pad and the adjusting pad are detachably connected.

[0012] Preferably, the support frame is provided with a plurality of support rods, which are located at the sliding groove position. The adjusting pad is provided with a slot through which the support rods extend, and the adjusting pad can slide along the direction of the support rods.

[0013] This utility model has the following advantages and beneficial effects: In this utility model: I. Dual-dimensional precise adjustment to correct roll surface defects: Driven by drive component II, the adjusting pad moves along the radial slide groove to achieve precise control of the distance between the grinding wheel and the roll surface. Driven by drive component I, the grinding wheel slides along the axial support groove to adapt to the grinding of protrusions at different axial positions of the roll. The dual-dimensional collaboration can accurately correct "W"-shaped / M-shaped thermal protrusion and completely solve the problem of uneven thickness of sheet and strip materials.

[0014] II. Easy to assemble and disassemble, and highly adaptable: The main structure is connected in a detachable manner, the grinding wheel can be quickly replaced, and it can be adapted to rolls of different diameters. At the same time, it does not require large-scale modification of the rolling mill and can be adapted to the upgrade of existing production lines. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the position of a roll grinding device proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a roll grinding device proposed in this utility model; Figure 3 This is a structural diagram of the support frame of a roll grinding device proposed in this utility model; Figure 4 Exploded view of the grinding wheel, adjusting pad and drive component I of the roll grinding device proposed in this utility model; Figure 5 This is another structural view of the roll grinding device proposed in this utility model; Figure 6 for Figure 5 A magnified view of a portion of the image.

[0016] Reference numerals: 1-Adjusting component, 11-Support frame, 111-Slide groove, 112-Connecting groove, 113-Support rod, 12-Adjusting pad, 121-Support channel, 122-Card slot, 123-Slot, 2-Grinding wheel, 2-Distance detector, 13-Drive component I, 31-Connecting plate, 32-First pad, 4-Drive component II, 41-Second pad, 5-Roller, 6-Telescopic rod, 61-Sleeve, 62-Adjusting cap, 63-Threaded rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] Example A roll grinding device is mainly used for repair grinding of the protrusions caused by thermal deformation of the roll 5 of an aluminum alloy casting and rolling mill.

[0020] like Figures 1-6 As shown, a roll grinding device includes a grinding wheel 2 and an adjustment component 1. The adjustment component 1 is installed on the outside of the rolling mill via its support frame 11, located on one side of the roll 5 that needs to be ground. The adjustment assembly 1 includes a support frame 11, an adjustment pad 12, and a drive component 13. The main body of the support frame 11 is welded or cast from plates and rods, providing the main structural rigidity. The use of plates and rods in the support frame 11 creates a large number of cavities inside, reducing the overall weight of the grinding device. A telescopic rod 6 is provided in the middle of the support frame 11. The telescopic rod 6 includes a sleeve 61, an adjustment cap 62, and a threaded rod 63. The threaded rod 63 is located inside the sleeve 61 and can slide within the sleeve 61. One end of the adjustment cap 62 is rotatably connected to the sleeve 61. The threaded rod 63 passes through the middle of the adjustment cap 62. A thread that mates with the threaded rod 63 is provided inside the adjustment cap 62. When the adjustment cap 62 is rotated, the threaded rod 63 can slide along the direction of the sleeve 61. The telescopic rod 6 realizes the height adjustment of the support frame 11.

[0021] like Figures 1-6 As shown, a groove 111 is provided at the upper end of the support frame 11 along the radial direction of the roll 5. One end of the adjusting pad 12 extends into the groove 111, and both sides of the adjusting pad 12 are in contact with the groove 111, allowing it to slide along the direction of the groove 111. Two parallel cylindrical support rods 113 are also fixedly installed on the support frame 11. The support rods 113 are located inside the groove 111 and are parallel to the groove 111. A slot 123 is provided through the adjusting pad, and the support rods 113 extend into the slot 123, providing precise guidance and auxiliary support for the radial movement of the adjusting pad 12. A connecting groove 112 is recessed on the support frame 11. 2. A drive component II4, a micro-motion cylinder, is fixedly welded to one side of the slide groove 111 and communicates with it. A second pad 41 is fixedly welded to the telescopic shaft end of the drive component II4. The second pad 41 and the adjusting pad 12 are detachably connected by bolts. Specifically, the adjusting pad 12 has a threaded hole, and the second pad 41 has an opening. When the drive component II4 is connected to the connecting groove 112 and the adjusting pad 12 is connected to the slide groove 111, the threaded hole and the opening of the second pad 41 are aligned. A bolt is screwed into the opening, extending into the threaded hole, thus connecting the drive component II4 and the adjusting pad 12. When the telescopic end of the drive component II4 extends or retracts, it can drive the adjusting pad 12 to move along the direction of the slide groove 111.

[0022] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, a support groove 121 is provided at the upper end of the adjusting pad 12, and the support groove 121 is oriented towards the axial direction of the roll 5. The grinding wheel 2 is disposed in the support groove 121. The grinding wheel 2 is a resin-bonded diamond grinding wheel and is equipped with a motor to drive the grinding wheel 2 to rotate. The grinding wheel 2 is supported in the support groove 121 and can move along the direction of the support groove 121. The driving component I3 is disposed at the upper end of the adjusting pad 12. One end of the adjusting pad 12 is recessed and has a groove 122. One end (non-telescopic end) of I3 is detachably provided with a connecting plate 31. One end of the connecting plate 31 extends into the slot 122. One end of the driving component I3 is provided with a threaded hole. The slot 122 of the adjusting pad 12 is also provided with a threaded hole. Several openings are provided on the connecting plate 31. One set of openings is aligned with the threaded hole on the driving component I3, and another set of openings is aligned with the threaded hole on the adjusting pad 12. Bolts are installed on the connecting plate 31 respectively. The driving component I3 and the adjusting pad 12 are connected by the connecting plate 31.

[0023] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the driving component I3 is a telescopic cylinder. A first pad 32 is fixedly welded to the shaft end of the driving component I3. The first pad 32 and the grinding wheel 2 are detachably connected. Specifically, the grinding wheel 2 has a threaded hole, and the first pad 32 has an opening. The threaded hole and the opening of the first pad 32 are aligned. A bolt is screwed into the opening, extending into the threaded hole, thus connecting the driving component I3 and the grinding wheel 2. When the shaft end of the driving component I3 extends or retracts, it drives the grinding wheel 2 to slide along the direction of the support groove 121 within the support groove 121.

[0024] like Figures 1-6 As shown, when the drive component I3 is working, it drives the grinding wheel 2 to slide axially along the support groove 121 to adjust the grinding position. When the drive component II4 is working, it drives the adjusting pad 12 to slide radially along the slide groove 111, thereby adjusting the distance (grinding depth) between the grinding wheel 2 and the roller 5. Since the grinding depth is often at the millimeter level, the drive component II4 is made of a micro-motion cylinder with a short and precise extension stroke. When the grinding wheel 2 and the roller 5 are in contact, when the grinding wheel 2 is working, the drive component II4 will push the adjusting pad 12 to move, so that the grinding wheel 2 grinds in the radial direction of the roller 5.

[0025] like Figure 1 , 2 As shown in Figures 4 and 5, a distance detector 21 is installed on the motor support of the grinding wheel 2. The distance detector 21 emits infrared light, which is reflected after illuminating the object. The reflected light is received by the sensor, and then the time difference between the emission and reception is received using image processing. After processing by the signal processor, the distance to the object is calculated. The receiver of the distance detector 21 is located outside the grinding device. When adjusting the contact distance between the grinding wheel 2 and the roller 5, the distance detector 21 can clearly understand the positional relationship between the grinding wheel 2 and the roller 5. At the same time, during the grinding of the grinding wheel 2, the distance detector 21 continuously detects the feed of the grinding wheel 2 to avoid over-grinding.

[0026] If the roll 5 contour detection device detects a protrusion in one of the rolls 5, the height of the telescopic rod 6 is adjusted so that the grinding wheel 2 is aligned with the axis of the protruding roll 5. If both rolls 5 have protrusions, after grinding one roll 5, the height of the telescopic rod 6 is adjusted so that the grinding wheel 2 is aligned with the axis of the other protruding roll 5 for processing, thus achieving grinding of both rolls 5.

[0027] Working principle: The thermal crown data of roll 5 is obtained by a roll 5 contour detection device (such as a laser diameter gauge) to determine the axial position and radial crown amount of the protruding part. The grinding device is placed outside the mill. The distance detector 21 is used to detect the distance between the grinding wheel 2 and roll 5 and the position of the detection device is adjusted so that the surfaces of the grinding wheel 2 and roll 5 are in contact. The drive component I3 is started, which drives the grinding wheel 2 to slide along the support groove 121 to the axial position of the first protruding part. The positioning is stopped, and the grinding wheel 2 is driven to work. The drive component II4 is started, which drives the adjusting pad. Block 12 moves along the slide groove 111 toward the roller 5. The grinding wheel 2 gradually contacts the surface of the roller 5 and grinds to a set depth (the roller 5 rotates at low speed during the grinding process). After the first protrusion is ground, the drive component II 4 drives the adjusting pad 12 to retract, and the drive component I 3 drives the grinding wheel 2 to move to the next protrusion. The above grinding steps are repeated until all protrusions are corrected. After grinding is completed, the power is turned off, and the drive component I 3 and drive component II 4 retract to the initial position. If the grinding wheel 2 is severely worn, it can be replaced by removing the bolts of the first pad 32.

[0028] In the prior art, the higher temperature on the drive side of the roll 5 during operation will cause local thermal expansion and protrusion. During the rolling process, the cast and rolled plate will become thinner and form a warped edge when it encounters the protrusion. In this invention, a small depression is ground out at the protrusion in advance. After the roll 5 expands thermally, the depression is lifted, so that the original protrusion is offset and the roll 5 is in a complete cylindrical shape.

[0029] By precisely adjusting the radial and axial dimensions, the thermal crown of roll 5 is efficiently corrected. Micro-precise local grinding is performed at specific locations. By precisely removing local high points of roll 5 (such as the warped area on the drive side), roll 5 forms an ideal profile after thermal expansion, solving the "W"-shaped / "M"-shaped thickness defects of strip and sheet materials. It is suitable for wide aluminum alloy casting and rolling production lines, providing high-quality billets for subsequent processes and significantly improving production efficiency and yield.

[0030] The above content is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A roll grinding device, characterized in that: The device includes a grinding wheel and an adjusting assembly. The adjusting assembly is located on one side of the roll, and the grinding wheel is mounted on the adjusting assembly. The adjusting assembly includes a support frame and an adjusting pad. The support frame has a sliding groove, and one end of the adjusting pad is slidably connected to the sliding groove. The adjusting pad has a supporting channel. The sliding groove is arranged in the radial direction of the roll, and the supporting channel is arranged in the axial direction of the roll. The grinding wheel is slidably mounted in the supporting channel.

2. The roll grinding device according to claim 1, characterized in that: The adjustment assembly also includes a retractable drive component I, which is detachably mounted on the adjustment pad, and the telescopic end of the drive component I is connected to the grinding wheel.

3. The roll grinding device according to claim 2, characterized in that: One end of the adjusting pad is recessed and has a slot, and one end of the driving component I is detachably provided with a connecting plate, which is detachably connected to the slot.

4. The roll grinding device according to claim 3, characterized in that: One end of the driving component I is fixedly provided with a first pad, and the first pad and the grinding wheel are detachably connected.

5. The roll grinding device according to claim 1, characterized in that: The support frame is provided with a connecting groove, and a driving component II is provided in the connecting groove. The connecting groove and the sliding groove are connected, and one end of the driving component II is connected to the adjusting pad.

6. A roll grinding apparatus according to claim 5, characterized in that: One end of the driving component II is fixedly provided with a second pad, and the second pad and the adjusting pad are detachably connected.

7. A roll grinding apparatus according to claim 6, characterized in that: The support frame is provided with a number of support rods, which are located at the sliding groove positions. The adjusting pad is provided with a slot through which the support rods extend, and the adjusting pad can slide along the direction of the support rods.

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