A distance adjusting device for a rolling mill

Abstract

The application provides a distance adjusting device for a rolling mill, which comprises a support frame, a support structure, an adjusting structure, a locking structure and two support seats. The support frame comprises a first frame, the support structure is installed inside the first frame, and the two support seats are slidingly installed on the support structure. The adjusting structure comprises a driving mechanism and a plurality of block groups, and the block groups are respectively clamped between the upper support seat and the top of the first frame, between the two support seats, and between the lower support seat and the bottom of the first frame. The driving mechanism is used to drive the block groups to move, the distance between the two support seats is changed by adjusting the embedding depth, and the clamping support of the top and bottom of the support seat is maintained. The locking structure is used to lock the adjusting structure. The position of the support seat is changed by embedding and pushing, so as to adjust the distance between the rolling mills, realize the effect of automatic distance adjustment, improve the efficiency and adjustment accuracy, and maintain the support of the main stress direction of the support seat by the embedding and pushing part.

Description

Technical Field

[0001] This invention relates to the field of rolling mill pitch adjustment structures, and more specifically, to a pitch adjustment device for rolling mills. Background Technology

[0002] Roll mills are the most widely used equipment in copper sheet and strip processing. They pass copper metal billets through the gap between a pair of rotating rolls, where the metal cross-section is reduced by the compression of the rolls, deforming it to the desired shape. In actual processing, the metal is gradually thinned through multi-stage rolling until the required thickness of the sheet or strip material is achieved.

[0003] Therefore, adjusting the gap between the rolls is a crucial step in meeting production and processing requirements. However, most current gap adjustment devices are manually operated, requiring repeated measurements and adjustments using plug gauges. This process is cumbersome, demands a high level of technical expertise from workers, and is time-consuming. For multi-stage rolling mills, multiple units need to be adjusted, making it even more complicated and increasing the probability of errors. Therefore, improvements are needed. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to propose a pitch adjustment device for a rolling mill, which changes the position of the support seat by embedding and pushing, thereby adjusting the pitch between the rolls, realizing the effect of automatic pitch adjustment, reducing manual intervention, improving efficiency and adjustment accuracy; and, the embedded and pushing part can also be used to maintain support for the main force direction of the support seat, preventing damage to the transmission structure and drive components.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This invention provides a pitch adjustment device for a rolling mill, comprising a support frame, a support structure, an adjustment structure, a locking structure, and two support seats; roller bearings are mounted on the support seats; the support frame includes a first frame, the support structure is installed inside the first frame, and the two support seats are slidably mounted on the support structure and elastically supported by springs; the adjustment structure includes a drive mechanism and multiple insert groups, the multiple insert groups being respectively engaged between the upper support seat and the top of the first frame, between the two support seats, and between the lower support seat and the bottom of the first frame; the drive mechanism is used to drive the insert groups to move, changing the distance between the two support seats by adjusting the embedding depth, and maintaining the engagement support for the top and bottom of the support seats; the locking structure is used to lock the adjustment structure to prevent the insert groups from moving after adjustment.

[0007] In a preferred embodiment of the present invention, the support structure includes multiple support rods arranged in a rectangular array, the support rods being vertically installed within a first frame; support plates are fixedly provided on both sides of the support base, and multiple first guide holes are provided on the support plates corresponding to the support rods, the support plates moving vertically along the support rods through the first guide holes; each support rod is fitted with a first spring, a second spring, and a third spring, the first spring being located between the top of the first frame and an adjacent support plate, the second spring being located between two support plates, and the third spring being located between the bottom of the first frame and an adjacent support plate.

[0008] In a preferred embodiment of the present invention, the top and bottom of the support base both protrude in a direction away from the center of the support base, forming two inclined fourth mating surfaces; the adjustment structure includes a first block group, a second block group, and a third block group. The first block group is engaged between the top of the first frame and the adjacent support base, the second block group is engaged between the two support bases, and the third block group is engaged between the bottom of the first frame and the adjacent support base. By adjusting the embedding depth of the second block group, the distance between the two support bases is changed, and the first block group and the third block group move in a matching manner to maintain stable support for the position of the support base away from the second block group.

[0009] In a preferred embodiment of the present invention, the adjusting structure includes a first lead screw, a second lead screw, a third lead screw, a first block group, a second block group, a third block group, and a driving mechanism; the first lead screw, the second lead screw, and the third lead screw are mounted between the two side walls of the first frame via bearings; the first block group includes two first blocks, the second block group includes two second blocks, and the third block group includes two third blocks; the bottom of the first block is provided with an inclined first mating surface, the top and bottom of the second block are provided with inclined second mating surfaces, and the top of the third block is provided with a third mating surface; the two first blocks are respectively mounted on the two first slides of the first lead screw. The mating surface slides against the fourth mating surface at the top of the upper support; two second inserts are respectively installed on the two second slides of the second lead screw, and the second mating surface slides against the fourth mating surface of the two support seats; two third inserts are respectively installed on the two third slides of the third lead screw, and the third mating surface slides against the fourth mating surface at the bottom of the lower support seat; a second frame is fixedly provided at the bottom of the first frame, and a drive mechanism is installed in the second frame. The drive mechanism is used to drive the first lead screw, the second lead screw, and the third lead screw to rotate synchronously. The movement direction of the second insert is opposite to that of the first insert and the third insert, and always maintains the limitation on the top and bottom of the support seat.

[0010] In a preferred embodiment of the present invention, the first lead screw is provided with a first threaded section and a second threaded section with opposite patterns, and a first slide is installed on both the first threaded section and the second threaded section; the structure of the third lead screw is the same as that of the first lead screw; the second lead screw is provided with a third threaded section and a fourth threaded section with opposite patterns, the pattern of the third threaded section being opposite to that of the first threaded section, and the pattern of the fourth threaded section being opposite to that of the second threaded section; the same end of the first lead screw, the second lead screw, and the third lead screw is connected to the drive mechanism for transmission and rotates synchronously.

[0011] In a preferred embodiment of the present invention, the top and bottom of the support base are provided with slots, the middle of the slots protrudes in a direction away from the center of the support base, and the bottom of the slots is parallel to the fourth mating surface; the first mating surface, the second mating surface, and the third mating surface are all fixedly provided with blocks, the shape of the blocks is adapted to the shape of the slots, and slides against the bottom of the slots with the corresponding inserts.

[0012] In a preferred embodiment of the present invention, the position of the slot corresponds to the position of the first lead screw, the second lead screw, and the third lead screw, and the width of the slot is greater than the diameter of the first lead screw, the second lead screw, and the third lead screw.

[0013] In a preferred embodiment of the present invention, the top of the first insert and the bottom of the third insert are provided with grooves; the top and bottom of the first frame are provided with guide strips, the shape of the guide strips is adapted to the shape of the grooves, and the first insert and the third insert are slidably engaged on the corresponding guide strips.

[0014] In a preferred embodiment of the present invention, the locking structure is used to lock the first lead screw, the second lead screw, and the third lead screw.

[0015] In a preferred embodiment of the present invention, a third frame is fixedly provided on one side of the first frame, and a prismatic block is fixedly provided at the ends of the first, second, and third lead screws away from the drive connection end. The prismatic block is located inside the third frame. Multiple bayonets are provided on the frame wall of the third frame away from the first frame. The positions of the bayonets correspond to the positions of the prismatic blocks, and the bayonets are prismatic hole structures. The locking structure includes a linear slide, a pusher, and multiple universal sleeves. The pusher is located on the outside of the third frame, and the universal sleeves are installed on the pusher. The positions of the universal sleeves correspond to the positions of the bayonets, and the shape of the outer wall of the universal sleeves is adapted to the shape of the bayonets. The universal sleeves slide and lock at the bayonets. The linear slide is used to drive the pusher to move along the axial direction of the bayonets. When the universal sleeve is locked outside the prismatic block, the first, second, and third lead screws are locked.

[0016] The beneficial effects of this invention are as follows:

[0017] The present invention provides a pitch adjustment device for a rolling mill, comprising a support frame, a support structure, an adjustment structure, a locking structure, and two support seats; a roller bearing is installed on the support seat to provide an installation position for the roll; the support frame includes a first frame, the support structure is installed inside the first frame, and the two support seats are slidably installed on the support structure and elastically supported by springs, providing basic support for the support seats and also providing basic conditions for movable adjustment;

[0018] The adjustment structure includes a drive mechanism and multiple insert groups. These insert groups are respectively positioned between the upper support seat and the top of the first frame, between two support seats, and between the lower support seat and the bottom of the first frame. The drive mechanism moves the insert groups, adjusting the insertion depth to change the distance between the two support seats while maintaining positioning support for the top and bottom of the support seats. By using a pegging support, the distance between the two support seats is changed, thus adjusting the distance between the rolls. The insert groups always maintain contact with the support seats, effectively dispersing the vertical force on the support seats and preventing it from concentrating on the transmission structure and drive components, thus preventing damage. Furthermore, the above actions are driven by the drive mechanism, achieving automatic distance adjustment, reducing manual intervention, and improving efficiency and adjustment accuracy.

[0019] The locking structure is used to lock the adjustment structure to prevent the block group from moving after it has been adjusted to the correct position. This ensures that the block group will not loosen during the subsequent rolling process and ensures uniform spacing. Attached Figure Description

[0020] Figure 1 This is a first-view perspective three-dimensional structural diagram of a roller mill pitch adjustment device provided in a specific embodiment of the present invention;

[0021] Figure 2 This is a second-view perspective three-dimensional structural diagram of a roller mill pitch adjustment device provided in a specific embodiment of the present invention;

[0022] Figure 3 This is a three-dimensional unfolded structural diagram of a roller mill adjusting device provided in a specific embodiment of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the support frame provided in a specific embodiment of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the support base provided in a specific embodiment of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the adjustment structure provided in a specific embodiment of the present invention;

[0026] Figure 7This is a three-dimensional structural diagram of the first insert provided in a specific embodiment of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the second insert provided in a specific embodiment of the present invention;

[0028] Figure 9 This is a three-dimensional structural diagram of the third insert provided in a specific embodiment of the present invention;

[0029] Figure 10 This is a three-dimensional structural diagram of the locking structure provided in a specific embodiment of the present invention.

[0030] In the picture:

[0031] 100. Support frame; 110. First frame; 111. First insertion hole; 112. Second insertion hole; 120. Second frame; 121. Second guide hole; 130. Third frame; 140. Guide strip; 150. Bayonet; 160. Cover plate;

[0032] 200. Support structure; 210. First spring; 220. Second spring; 230. Third spring; 240. Support rod;

[0033] 300. Adjustment structure; 310. First insert group; 311. First insert; 312. First mating surface; 320. Second insert group; 321. Second insert; 322. Second mating surface; 330. Third insert group; 331. Third insert; 332. Third mating surface; 340. First lead screw; 341. First threaded section; 342. Second threaded section; 350. Second lead screw; 351. Third threaded section; 352. Fourth threaded section; 360. Third lead screw; 370. Drive mechanism; 380. Locking block; 390. Prism block;

[0034] 400. Locking structure; 410. Linear slide; 420. Push frame; 430. Universal sleeve;

[0035] 500, Support base; 510, Support plate; 520, First guide hole; 530, Dating surface; 540, Slot; 600, Roller bearing. Detailed Implementation

[0036] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] like Figures 1 to 3As shown in the figure, a specific embodiment of the present invention discloses a gap adjustment device for a rolling mill, including a support frame 100, a support structure 200, an adjustment structure 300, a locking structure 400, and two support seats 500; a roller bearing 600 is installed on the support seat 500; the support frame 100 includes a first frame 110, the support structure 200 is installed inside the first frame 110, and the two support seats 500 are slidably installed on the support structure 200 and elastically supported by springs; the adjustment structure 300 includes a drive mechanism 370 and multiple insert groups, the multiple insert groups being respectively locked between the upper support seat and the top of the first frame, between the two support seats, and between the lower support seat and the bottom of the first frame; the drive mechanism is used to drive the insert groups to move, change the gap between the two support seats by adjusting the embedding depth, and maintain the locking support for the top and bottom of the support seats; the locking structure 400 is used to lock the adjustment structure 300 to prevent the insert groups from moving after being adjusted.

[0038] The aforementioned roller mill pitch adjustment device includes a support frame, a support structure, an adjustment structure, a locking structure, and two support seats; the support seats are equipped with roller bearings to provide mounting positions for the rolls; the support frame includes a first frame, the support structure is installed inside the first frame, and the two support seats are slidably installed on the support structure and elastically supported by springs, providing basic support for the support seats and also providing basic conditions for movable adjustment;

[0039] The adjustment structure includes a drive mechanism and multiple insert groups. These insert groups are respectively positioned between the upper support seat and the top of the first frame, between two support seats, and between the lower support seat and the bottom of the first frame. The drive mechanism moves the insert groups, adjusting the insertion depth to change the distance between the two support seats while maintaining positioning support for the top and bottom of the support seats. By using a pegging support, the distance between the two support seats is changed, thus adjusting the distance between the rolls. The insert groups always maintain contact with the support seats, effectively dispersing the vertical force on the support seats and preventing it from concentrating on the transmission structure and drive components, thus preventing damage. Furthermore, the above actions are driven by the drive mechanism, achieving automatic distance adjustment, reducing manual intervention, and improving efficiency and adjustment accuracy.

[0040] The locking structure is used to lock the adjustment structure to prevent the block group from moving after it has been adjusted to the correct position. This ensures that the block group will not loosen during the subsequent rolling process and ensures uniform spacing.

[0041] Furthermore, the support base is provided with holes for installing roller bearings. The roller bearings are fixedly installed on the support base by bolts, and the structure is detachable, so that the roller bearings can be replaced and used to adapt to the installation of different rolls, and also facilitate maintenance and replacement.

[0042] Furthermore, such as Figure 2 .、 Figure 3 As shown, the support structure 200 includes multiple support rods 240 arranged in a rectangular array, and the support rods 240 are vertically installed within the first frame 110; as Figure 5 As shown, support plates 510 are fixedly provided on both sides of the support base 500. Multiple first guide holes 520 are opened on the support plates 510 corresponding to the support rods 240. The support plates move vertically along the support rods through the first guide holes. Each support rod 240 is fitted with a first spring 210, a second spring 220, and a third spring 230. The first spring 210 is located between the top of the first frame 110 and the adjacent support plate 510, the second spring 220 is located between the two support plates 510, and the third spring 230 is located between the bottom of the first frame 110 and the adjacent support plate 510. The support base is supported at multiple points by the first spring, the second spring, and the third spring, so that the support base is in a basic support state. Moreover, the first spring, the second spring, and the third spring are all in a compressed state, which can provide elastic force in both directions. With the action of multiple insert groups, they can play a certain role in assisting to strengthen the support base.

[0043] Furthermore, such as Figure 4 As shown, the bottom of the first frame 110 is provided with a plurality of first insertion holes 111, the bottom of which is sealed, and the top is provided with a plurality of second insertion holes 112, which penetrate the upper and lower walls of the top of the first frame. A support rod is inserted between the first insertion holes and the second insertion holes, and the top of the support rod is flush with the top outer wall of the first frame. A cover plate 160 is installed on the top outer wall of the first frame 110. The cover plate blocks and seals the top of the second insertion holes and restricts and presses the top of the support rod, so that the support rod is a detachable component, which facilitates the assembly of other structural components.

[0044] Furthermore, limiting grooves are fixedly provided on both sides of the top outer wall of the first frame, and the two ends of the pressure plate extend into the limiting grooves and are fixed by bolts, which further strengthens the restriction of the pressure plate and enhances the force on the pressure plate, preventing the pressure plate from easily loosening or deviating.

[0045] The inner diameter of the spring is matched with the diameter of the support rod, and the spring slides along the support rod; both ends of the guide hole are provided with grooves, and the top and bottom of the first frame are provided with protruding rings on the outside of the corresponding insertion holes. The end of the spring is placed inside the groove or protruding ring for further restriction to prevent the spring from deviating.

[0046] Furthermore, such as Figures 5 to 9As shown, the top and bottom of the support 500 both protrude in a direction away from the center of the support, forming two inclined fourth mating surfaces 530; the adjustment structure 300 includes a first insert group 310, a second insert group 320, and a third insert group 330. The first insert group 310 is engaged between the top of the first frame 110 and the adjacent support 500, the second insert group 320 is engaged between the two support 500s, and the third insert group 330 is engaged between the bottom of the first frame 110 and the adjacent support 500. By adjusting the embedding depth of the second insert group 320, the distance between the two support 500s is changed, and the first insert group... Group 310 and the third insert group 330 move in tandem to maintain stable support for the support base away from the position of the second insert group. When the second insert group moves, the force can be distributed through the inclined mating surface to provide vertical thrust to the support base, allowing the support base to move in the vertical direction and thus achieve the required spacing adjustment. The matching movement of the first and second insert groups does not affect the vertical movement of the support base, and can also lock and limit the end of the support base away from the second insert group, effectively preventing the support base from deviating and keeping it stably maintained in the required position, thereby maintaining the required spacing gap.

[0047] Furthermore, such as Figure 6As shown, the adjustment structure 300 includes a first lead screw 340, a second lead screw 350, a third lead screw 360, a first block group 310, a second block group 320, a third block group 330, and a drive mechanism 370. The first lead screw 340, the second lead screw 350, and the third lead screw 360 are mounted between the two side walls of the first frame 110 via bearings. The first block group 310 includes two first blocks 311, the second block group 320 includes two second blocks 321, and the third block group 330 includes two third blocks 331. The bottom of the first block 311 is provided with an inclined first mating surface 312, the top and bottom of the second block 321 are provided with inclined second mating surfaces 322, and the top of the third block 331 is provided with a third mating surface 332. The two first blocks 311 are respectively mounted on the two first slides of the first lead screw 340. The second mating surface 312 slides against the fourth mating surface 530 at the top of the upper support 500; the two second inserts 321 are respectively installed on the two second slides of the second lead screw 350, and the second mating surface 322 slides against the adjacent fourth mating surfaces 530 of the two support 500; the two third inserts 331 are respectively installed on the two third slides of the third lead screw 360, and the third mating surface 332 slides against the fourth mating surface 530 at the bottom of the lower support 500; the bottom of the first frame 110 is fixedly provided with a second frame 120, and the drive mechanism 370 is installed in the second frame 120. The drive mechanism 370 is used to drive the first lead screw 340, the second lead screw 350, and the third lead screw 360 to rotate synchronously. The movement direction of the second insert 321 is opposite to that of the first insert 311 and the third insert 331, and always maintains the limitation on the top and bottom of the support.

[0048] When the second insert moves toward the center of the second lead screw, the contact range between the second mating surface and the fourth mating surface gradually increases, and the space occupied also gradually expands, thereby causing the support to move away from the center and the distance between the two support seats increases. Meanwhile, the first and third inserts move away from the center of the support seat, and the contact range between the first and fourth mating surfaces and the basic range between the third and fourth mating surfaces gradually decreases, but they always maintain the state of contact support. This can both expand the distance between the two support seats and ensure the obstruction and limitation of the top of the upper support seat and the bottom of the lower support.

[0049] As the second insert moves toward the center of the second lead screw, the contact area between the second and fourth mating surfaces gradually decreases, and the space occupied also gradually decreases, causing the support seats to move closer together and reducing the distance between the two support seats. Meanwhile, the first and third inserts move toward the center of the support seats, and the contact area between the first and fourth mating surfaces and the base area between the third and fourth mating surfaces gradually increase, expanding the space occupied. This not only reduces the distance between the two support seats but also ensures the obstruction and limitation of the top of the upper support seat and the bottom of the lower support seat.

[0050] It should be noted that the first, second, and third inserts will not detach from the support base during the movement process, to prevent subsequent support and adjustment from being impossible.

[0051] Furthermore, the first, second, and third inserts are all provided with holes for mounting the lead screw slide, so that the holes are as close as possible to the force center of the insert, so as to drive the insert to move smoothly and also to strengthen the force transmission between the lead screw and the insert.

[0052] Furthermore, such as Figure 6 As shown, the first lead screw 340 has a first threaded section 341 and a second threaded section 342 with opposite patterns, and a first slide is installed on both the first and second threaded sections; the structure of the third lead screw 360 is the same as that of the first lead screw 340; the second lead screw 350 has a third threaded section 351 and a fourth threaded section 352 with opposite patterns, the pattern of the third threaded section 351 being opposite to that of the first threaded section 341, and the pattern of the fourth threaded section 352 being opposite to that of the second threaded section 342; the same end of the first, second, and third lead screws is connected to the drive mechanism for transmission and rotates synchronously; by using threaded sections with partially opposite patterns, the slides can be driven to move in different directions while rotating in the same direction, ensuring that multiple inserts move synchronously.

[0053] Furthermore, the drive mechanism includes a motor, a gearbox, and a synchronous belt. Pulleys are fixedly mounted on the ends of the first, second, and third lead screws and on the output shaft of the gearbox. The multiple pulleys are connected by synchronous belt transmission. The input shaft of the gearbox and the output shaft of the motor are connected by a coupling. Both the gearbox and the motor are bolted into the second frame. By synchronously driving multiple lead screws with the motor, power consumption can be reduced, and coordinated movement between the various blocks can be ensured, allowing for smooth adjustment of the support base.

[0054] Furthermore, such as Figures 5 to 9As shown, the top and bottom of the support base 500 are provided with slots 540. The middle part of the slot 540 protrudes away from the center of the support base 500, and the bottom of the slot 540 is parallel to the fourth mating surface 530. The first mating surface 312, the second mating surface 322, and the third mating surface 332 are all fixedly provided with blocks 380. The shape of the blocks 380 is adapted to the shape of the slots 540, and they slide against the bottom of the slots with the corresponding inserts. By setting the slots and blocks, the sliding fit between the support base and the inserts can be further strengthened, and the support effect can be enhanced. In addition, the mutual limiting effect can also be achieved in the axial direction of the support base. Based on the cooperation between the support base and the support rod, the support base can only move along the direction of the support rod, and the inserts can only move along the direction of the lead screw. The cooperation of the slots and blocks can further transfer and disperse the force, preventing the structural components from being damaged by concentrated force.

[0055] Furthermore, the position of the slot 540 corresponds to the positions of the first lead screw 340, the second lead screw 350, and the third lead screw 360, and the slot width of the slot 510 is greater than the rod diameter of the first lead screw 340, the second lead screw 350, and the third lead screw 360; to prevent interference and collision between the slot and the lead screw, and to prevent collision damage to the lead screw.

[0056] Furthermore, the top of the first insert 311 and the bottom of the third insert 331 are provided with sliding grooves; the top and bottom of the first frame 110 are bolted with guide bars 140, the shape of the guide bars 140 is adapted to the shape of the sliding groove, and the first insert 311 and the third insert 331 are slidably locked on the corresponding guide bars 140; the movement of the first insert and the third insert is further limited, and their force support in the width direction of the guide bar is enhanced, thereby strengthening the force on the support seat in this direction; the sliding groove is a T-shaped groove or dovetail groove structure, which does not affect normal sliding and can also effectively prevent disengagement, thereby ensuring that the first insert and the third insert only move along the length direction of the guide bar and will not deviate in the width direction. Through the cooperation of the locking block and the locking groove, the support seat is further limited, preventing deviation in this direction and reducing the force on the support rod in this direction.

[0057] Furthermore, the locking structure 400 is used to lock the first lead screw 340, the second lead screw 350, and the third lead screw 360. Locking the first lead screw, the second lead screw, and the third lead screw prevents them from rotating, which means that the corresponding first insert, second insert, and third insert cannot move, thereby achieving the limitation and locking of the support seat.

[0058] Furthermore, such as Figure 4 , Figure 6As shown, a third frame 130 is fixedly provided on one side of the first frame 110. A prism block 390 is fixedly provided at the ends of the first lead screw 340, the second lead screw 350, and the third lead screw 360 away from the drive connection end. The prism block 390 is located inside the third frame 130. Multiple bayonets 150 are provided on the frame wall of the third frame 130 away from the first frame 110. The position of the bayonets 150 corresponds to the position of the prism block 390. The bayonets are prism hole structures.

[0059] like Figure 10 As shown, the locking structure 400 includes a linear slide 410, a pusher 420, and multiple universal sleeves 430. The pusher is located outside the third frame, and the universal sleeves 430 are mounted on the pusher 420. The positions of the universal sleeves correspond to the positions of the bayonets, and the outer wall shape of the universal sleeves 430 is adapted to the shape of the bayonet 150. The universal sleeves 430 slide and engage at the bayonet 150. The linear slide is used to drive the pusher to move along the axial direction of the bayonet. When the universal sleeves 430 are engaged outside the prismatic block 390, the first lead screw 340, the second lead screw 350, and the third lead screw 360 are locked. The prismatic block can be fitted into any angle of rotation, and the universal sleeve can be inserted into the bayonet. The universal sleeve cannot rotate, which in turn prevents the lead screw from rotating, thus locking the insert and positioning and locking the support. Furthermore, the above structure can transfer the force on the lead screw to the universal sleeve and the support frame, effectively reducing the concentrated force on the lead screw and drive mechanism and preventing deformation and damage to the structural instrument. The overall locking structure is driven by a linear slide, which can achieve smooth movement. The linear slide and the universal sleeve are common structural instruments that can be purchased and used on the market. The specific structure will not be described in detail.

[0060] Furthermore, the linear slide is installed inside the second frame, and the bottom of the pusher is bent towards the inside of the second frame. The second frame 120 and the third frame 130 are provided with a second guide hole 121. The bent part of the pusher passes through the second guide hole through the frame wall of the second frame and slides along the second guide hole. The bent end of the pusher is fixedly installed on the slider of the linear slide by bolts. The end of the universal sleeve is fixed to the pusher by at least two bolts to ensure that the position of the universal sleeve will not change and to ensure that the universal sleeve and the bayonet are slidably engaged.

[0061] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A pitch adjustment device for a rolling mill, characterized in that: Includes a support frame, support structure, adjustment structure, locking structure, and two support bases; The support base is equipped with roller bearings; The support frame includes a first frame, a support structure installed inside the first frame, and two support seats slidably installed on the support structure and elastically supported by springs. The adjustment structure includes a drive mechanism and multiple insert groups. The multiple insert groups are respectively locked between the upper support and the top of the first frame, between the two support seats, and between the lower support and the bottom of the first frame. The drive mechanism is used to drive the insert groups to move, change the distance between the two support seats by adjusting the embedding depth, and maintain the locking support for the top and bottom of the support seats. The locking structure is used to lock the adjustment structure to prevent the block group from moving after it has been adjusted to the correct position; The support structure includes multiple support rods arranged in a rectangular array, which are vertically installed within the first frame; Support plates are fixedly provided on both sides of the support base. Multiple first guide holes are opened on the support plates corresponding to the support rods. The support plates can move vertically along the support rods through the first guide holes. Each support rod is fitted with a first spring, a second spring, and a third spring. The first spring is located between the top of the first frame and the adjacent support plate, the second spring is located between the two support plates, and the third spring is located between the bottom of the first frame and the adjacent support plate. The top and bottom of the support both protrude in a direction away from the center of the support, forming two inclined fourth mating surfaces; The adjustment structure includes a first block group, a second block group, and a third block group. The first block group is engaged between the top of the first frame and the adjacent support, the second block group is engaged between the two support, and the third block group is engaged between the bottom of the first frame and the adjacent support. By adjusting the embedding depth of the second block group, the distance between the two support is changed, and the first and third block groups move in a matching manner to maintain stable support for the support at the position away from the second block group.

2. The adjusting device for a rolling mill according to claim 1, characterized in that: The adjustment structure includes a first lead screw, a second lead screw, a third lead screw, a first block group, a second block group, a third block group, and a drive mechanism; The first lead screw, the second lead screw, and the third lead screw are installed between the two side walls of the first frame through bearings. The first block group includes two first blocks, the second block group includes two second blocks, and the third block group includes two third blocks. The bottom of the first block is provided with an inclined first mating surface, the top and bottom of the second block are provided with inclined second mating surfaces, and the top of the third block is provided with a third mating surface. Two first inserts are respectively installed on the two first slides of the first lead screw, and the first mating surface slides against the fourth mating surface at the top of the upper support seat; Two second inserts are respectively installed on the two second slides of the second lead screw, and the second mating surface slides against the fourth mating surface of the two support seats; Two third inserts are respectively installed on the two third slides of the third lead screw, and the third mating surface slides against the fourth mating surface at the bottom of the support base below; The bottom of the first frame is fixedly provided with a second frame, and the drive mechanism is installed in the second frame. The drive mechanism is used to drive the first lead screw, the second lead screw and the third lead screw to rotate synchronously. The movement direction of the second insert is opposite to that of the first insert and the third insert, and always maintains the limitation on the top and bottom of the support seat.

3. The adjusting device for a rolling mill according to claim 2, characterized in that: The first lead screw has a first threaded section and a second threaded section with opposite patterns, and a first slide is installed on both the first threaded section and the second threaded section; the structure of the third lead screw is the same as that of the first lead screw. The second lead screw is provided with a third thread section and a fourth thread section with opposite patterns. The pattern of the third thread section is opposite to that of the first thread section, and the pattern of the fourth thread section is opposite to that of the second thread section. The first, second, and third lead screws are connected at the same end to the drive mechanism and rotate synchronously.

4. The adjusting device for a rolling mill according to claim 3, characterized in that: The top and bottom of the support base are provided with slots, the middle of the slots protrudes away from the center of the support base, and the bottom of the slots is parallel to the fourth mating surface. A locking block is fixedly provided on the first mating surface, the second mating surface, and the third mating surface. The shape of the locking block is adapted to the shape of the slot, and slides against the bottom of the slot with the corresponding insert.

5. The adjusting device for a rolling mill according to claim 4, characterized in that: The position of the slot corresponds to the position of the first lead screw, the second lead screw, and the third lead screw, and the width of the slot is greater than the diameter of the first lead screw, the second lead screw, and the third lead screw.

6. The adjusting device for a rolling mill according to claim 5, characterized in that: The top of the first insert and the bottom of the third insert are both provided with grooves; Guide bars are installed at the top and bottom of the first frame. The shape of the guide bars matches the shape of the slide groove. The first and third inserts are slidably engaged on the corresponding guide bars.

7. The adjusting device for a rolling mill according to claim 6, characterized in that: The locking structure is used to lock the first lead screw, the second lead screw, and the third lead screw.

8. The adjusting device for a rolling mill according to claim 7, characterized in that: A third frame is fixedly provided on one side of the first frame. A prism block is fixedly provided at the ends of the first lead screw, the second lead screw, and the third lead screw away from the drive connection end. The prism block is located inside the third frame. Multiple bayonets are provided on the frame wall of the third frame away from the first frame. The positions of the bayonets correspond to the positions of the prism blocks. The bayonets are prism hole structures. The locking structure includes a linear slide, a pusher, and multiple universal sleeves. The pusher is located on the outside of the third frame, and the universal sleeves are mounted on the pusher. The position of the universal sleeve corresponds to the position of the bayonet. The outer wall shape of the universal sleeve is adapted to the shape of the bayonet. The universal sleeve slides and locks into the bayonet. The linear slide is used to drive the pusher to move along the axis of the bayonet. When the universal sleeve is locked onto the outside of the prism block, it locks the first lead screw, the second lead screw, and the third lead screw.

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