Aluminum plate jacking and centering device

Abstract

The utility model relates to the technical field of aluminum plate processing, in particular to an aluminum plate jacking and centering device which comprises a roller bed, a plurality of jacking mechanisms and centering mechanisms are arranged on the roller bed at intervals, and the jacking mechanisms and the centering mechanisms are located between two adjacent carrier rollers of the roller bed respectively. The jacking mechanism comprises a first supporting plate and jacking structures arranged at the top of the first supporting plate at intervals. Each jacking structure comprises a jacking assembly and a power assembly used for driving the jacking assembly to do lifting motion. The centering mechanism comprises a second supporting plate, a driving assembly, a transmission assembly and two centering assemblies opposite in movement direction, the driving assembly is arranged at the bottom of the second supporting plate, one centering assembly is connected with the driving assembly, the transmission assembly is arranged at the top of the second supporting plate, and the transmission assembly is in transmission connection with the two centering assemblies. The aluminum plate deviation correcting and centering device is convenient for correcting and centering aluminum plates which deviate on a roller bed, so that the phenomenon that the stacked aluminum plates are mutually staggered is avoided.

Description

Technical Field

[0001] This utility model relates to the field of aluminum plate processing technology, specifically to an aluminum plate lifting and centering device. Background Technology

[0002] Polishing refers to the process of reducing the surface roughness of a workpiece by using mechanical, chemical, or electrochemical methods to obtain a bright and smooth surface. Currently, polishing machines are commonly used in the processing of aluminum sheets to polish them. The polishing machine can improve the gloss of the aluminum sheet surface and remove defects such as dents, burrs, and wood streaks.

[0003] After being polished by a polishing machine, the aluminum sheets are conveyed to a roller bed, which then transports them to the palletizing process. The palletizing equipment uses suction cups to stack the aluminum sheets. However, in the existing technology, the aluminum sheets are prone to deviation during conveying on the roller bed. Once the aluminum sheets are conveyed to the palletizing equipment, it is difficult to correct and align the deviationd aluminum sheets, resulting in misalignment between the aluminum sheets stacked by the palletizing equipment, which is inconvenient for subsequent packaging. Summary of the Invention

[0004] This invention addresses the problems of inconvenience in correcting and centering misaligned aluminum plates on roller beds and the easy misalignment between stacked aluminum plates in existing technologies. It provides an aluminum plate lifting and centering device that facilitates the correction and centering of misaligned aluminum plates on roller beds. The device can lift and center aluminum plates before stacking them on the palletizing equipment, thereby preventing misalignment between stacked aluminum plates and facilitating packaging of the aluminum plates in the packaging process.

[0005] To achieve the above objectives, the technical solution of this utility model is: an aluminum plate lifting and centering device, comprising a roller bed, wherein multiple lifting mechanisms and centering mechanisms are spaced apart on the roller bed, and the lifting mechanisms and centering mechanisms are respectively located between two adjacent support rollers of the roller bed. After the aluminum plate is conveyed to the palletizing equipment on the roller bed, the lifting mechanism can lift the aluminum plate to facilitate the centering mechanism to correct and center the aluminum plate.

[0006] The lifting mechanism includes a support plate and lifting structures spaced apart on top of the support plate. The lifting structures include lifting components and a power component for driving the lifting components to move up and down. The power component can drive the lifting components to move up and down, so that the lifting components can lift or lower the aluminum plate. At the same time, the centering mechanism can correct and center the aluminum plate to facilitate its movement.

[0007] The alignment mechanism includes a second support plate, a drive assembly, a transmission assembly, and two alignment components moving in opposite directions. The drive assembly is located at the bottom of the second support plate, and one of the alignment components is connected to the drive assembly. The transmission assembly is located at the top of the second support plate and drives the two alignment components. The drive assembly can drive one of the alignment components to move, and under the action of the transmission assembly, the two alignment components move synchronously. When the two alignment components move, they can push the aluminum plate to move, achieving the effect of correcting and aligning the aluminum plate.

[0008] Furthermore, the power assembly includes a lifting cylinder and a lifting plate. A mounting groove is provided on the top of the support plate, and the lifting cylinder is fixedly installed within the mounting groove. The telescopic end of the lifting cylinder is connected to the lifting plate. The mounting groove provides an installation position for the lifting cylinder, and the telescopic end of the lifting cylinder can drive the lifting plate to move up and down.

[0009] Furthermore, the lifting assembly includes a fixed shaft and a deep groove ball bearing. The deep groove ball bearing is installed at both ends of the fixed shaft, and a fixed plate is symmetrically arranged in the middle of the fixed shaft. The fixed plate is positioned on top of the lifting plate. While the lifting plate is moving up and down, it can drive the lifting assembly to move up and down as well, thereby achieving the effect of the deep groove ball bearings of the lifting assembly lifting the aluminum plate. Simultaneously, the deep groove ball bearings facilitate the movement of the aluminum plate, allowing the centering mechanism to correct and center any misaligned aluminum plates.

[0010] Furthermore, the transmission assembly includes a gearbox, a gear shaft, and a cylindrical gear. Support side plates are provided on both sides of the middle portion of the second support plate. The gearbox is located on top of the second support plate and the support side plates. The gear shaft is vertically positioned on top of the second support plate and inside the gearbox. A deep groove ball bearing is provided at the upper end of the gear shaft, and the cylindrical gear is rotatably connected to the gear shaft via the deep groove ball bearing. A gearbox cover is provided on top of the gearbox. The second support plate provides support for the centering mechanism, the support side plates serve to mount the gearbox, and the deep groove ball bearing facilitates the rotation of the cylindrical gear on the gear shaft.

[0011] Furthermore, the centering assembly includes a cylindrical rack, a centering wheel bracket, a double-row deep groove ball bearing, and two self-lubricating copper sleeves. One end of the cylindrical rack passes through the gearbox and meshes with the cylindrical gear. The two self-lubricating copper sleeves are slidably fitted onto the cylindrical rack, and are respectively disposed on the two side plates of the gearbox. The cylindrical racks of the two centering assemblies can run synchronously under the action of the cylindrical gear. The self-lubricating copper sleeves guide the movement of the cylindrical rack while also facilitating its movement.

[0012] Furthermore, the centering wheel bracket has an "L"-shaped structure. A round nut is fixedly installed at the lower end of the vertical part of the centering wheel bracket, and an external thread is provided at the other end of the cylindrical rack. The round nut is threadedly connected to the cylindrical rack. A centering pin is provided at the horizontal part of the centering wheel bracket, and a double-row deep groove ball bearing is sleeved on the centering pin. The movement of the cylindrical rack drives the centering wheel bracket to move synchronously, and the centering wheel bracket drives the double-row deep groove ball bearing to move. The double-row deep groove ball bearing pushes the aluminum plate to achieve the effect of correcting and centering the aluminum plate.

[0013] Furthermore, the drive assembly includes a centering cylinder and a U-shaped seat. A strip plate is symmetrically arranged at the bottom of the second support plate, and a T-shaped seat is arranged at the bottom of the strip plate. The centering cylinder is positioned between two of the T-shaped seats, and the telescopic end of the centering cylinder is connected to the U-shaped seat. The T-shaped seat serves to mount the centering cylinder, and the telescopic end of the centering cylinder can drive the U-shaped seat to move back and forth.

[0014] Furthermore, one of the cylindrical racks has a hinge bracket on its outer side and a sliding groove on its inner side. The hinge bracket has an "L" shape, and its horizontal part is hinged to a U-shaped seat. A slider is fixedly installed inside the self-lubricating copper sleeve fitted on the cylindrical rack, and the slider is slidably disposed in the sliding groove. Through the cooperation between the hinge bracket and the U-shaped seat, the extension and retraction of the telescopic end of the central cylinder can drive the cylindrical rack to move. Through the cooperation between the slider and the sliding groove, the movement of the cylindrical rack is limited and guided.

[0015] The beneficial effects of this utility model through the above technical solution are as follows:

[0016] This utility model has a reasonable structure and good performance. It can lift and center the aluminum plates on the roller bed before the palletizing equipment stacks the aluminum plates, so as to correct the aluminum plates that have deviated on the roller bed and center them, thereby avoiding the phenomenon of misalignment of the aluminum plates stacked by the palletizing equipment, so as to facilitate the subsequent packaging process of the aluminum plates.

[0017] The support plate of this utility model provides support for the lifting structure. The lifting cylinder of the lifting structure drives the lifting plate to move up and down, so that the lifting plate moves up and down while driving the lifting assembly to move up and down, so that the lifting assembly can lift or lower the aluminum plate, so that the centering mechanism can perform the correction and centering operation on the aluminum plate. When the centering mechanism corrects and centers the aluminum plate, the deep groove ball bearing of the lifting assembly facilitates the movement of the aluminum plate, so as to facilitate the correction and centering of the aluminum plate.

[0018] The drive assembly of the centering mechanism of this utility model drives the cylindrical rack of one of the centering assemblies to move through a hinged bracket. Under the action of the cylindrical gear of the transmission assembly, the cylindrical racks of the two centering assemblies can run synchronously. The centering wheel brackets on the two cylindrical racks can move closer or further away from each other, and drive the two double-row deep groove ball bearings to move closer or further away from each other. When the two double-row deep groove ball bearings move closer to each other, they push the aluminum plate, thereby achieving the effect of correcting and centering the aluminum plate and avoiding misalignment when the palletizing equipment stacks the aluminum plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an aluminum plate lifting and centering device according to this utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of an aluminum plate lifting and centering device according to this utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the lifting mechanism of this utility model. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the lifting mechanism of this utility model. Figure 2 ;

[0023] Figure 5 This is a schematic diagram of the centering mechanism of this utility model. Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the centering mechanism of this utility model. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the centering mechanism of this utility model. Figure 3 ;

[0026] Figure 8 This is a schematic diagram of the centering mechanism of this utility model. Figure 4 ;

[0027] Figure 9 yes Figure 6 A magnified structural diagram of point A in the middle.

[0028] The attached diagram is labeled as follows: 1 is the roller bed, 2 is support plate one, 3 is the mounting groove, 4 is the lifting cylinder, 5 is the lifting plate, 6 is the fixed shaft, 7 is the deep groove ball bearing one, 8 is the fixed plate, 9 is the support plate two, 10 is the support side plate, 11 is the gear box, 12 is the gear box cover, 13 is the gear shaft, 14 is the deep groove ball bearing two, 15 is the cylindrical gear, 16 is the self-lubricating copper sleeve, 17 is the cylindrical rack, 18 is the centering wheel bracket, 19 is the centering pin, 20 is the double row deep groove ball bearing, 21 is the round nut, 22 is the slider, 23 is the slide groove, 24 is the strip plate, 25 is the T-shaped seat, 26 is the centering cylinder, 27 is the U-shaped seat, and 28 is the hinge bracket. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] like Figures 1-9 As shown, an aluminum plate lifting and centering device includes a roller bed 1. Multiple lifting mechanisms and centering mechanisms are spaced apart on the roller bed 1, located between adjacent support rollers. In this embodiment, there are six lifting mechanisms and five centering mechanisms. After polishing, the aluminum plate is conveyed onto the roller bed 1. After the roller bed 1 conveys the aluminum plate to the palletizing equipment, multiple lifting mechanisms simultaneously lift the aluminum plate. Once lifted, the aluminum plate is easily centered by the centering mechanisms. After the lifting mechanisms lift the aluminum plate on the roller bed 1, multiple centering mechanisms operate synchronously to correct and center any misaligned aluminum plates on the roller bed 1.

[0031] The lifting mechanism includes a support plate 2 and lifting structures spaced apart on the top of the support plate 2. Each lifting structure includes a lifting assembly and a power assembly for driving the lifting assembly to move up and down. In this embodiment, both ends of the support plate 2 are fixedly connected to the roller bed 1. The support plate 2 provides fixed support for the lifting structures. Two lifting structures are symmetrically installed on the top of the support plate 2. The power assembly serves as the power source to drive the lifting assembly to move up and down, thereby lifting or lowering the aluminum plate.

[0032] The alignment mechanism includes a support plate 9, a drive assembly, a transmission assembly, and two alignment components moving in opposite directions. The drive assembly is located at the bottom of the support plate 9, and one of the alignment components is connected to the drive assembly. The transmission assembly is located at the top of the support plate 9 and drives the two alignment components. In this embodiment, the drive assembly drives one of the alignment components to move, and the transmission assembly enables the two alignment components to move synchronously and in opposite directions, thereby achieving the effect of centering and correcting the aluminum plate.

[0033] The power assembly includes a lifting cylinder 4 and a lifting plate 5. The top of the support plate 2 has a mounting groove 3, and the lifting cylinder 4 is fixedly installed within the mounting groove 3. The telescopic end of the lifting cylinder 4 is connected to the lifting plate 5. In this embodiment, the support plate 2 has a hollow internal structure, and a square hole is opened at the bottom of the support plate 2. This hole allows the lifting cylinder 4 to be connected to an air source via a pipe, providing power to the lifting cylinder 4. The mounting groove 3 provides an installation position for the lifting cylinder 4. The lifting cylinder 4 is vertically installed inside the mounting groove 3. When the lifting cylinder 4 is opened, its telescopic end drives the lifting plate 5 to move up and down.

[0034] The lifting assembly includes a fixed shaft 6 and deep groove ball bearings 7. Both ends of the fixed shaft 6 are equipped with the deep groove ball bearings 7, and a fixed plate 8 is symmetrically arranged in the middle of the fixed shaft 6. The fixed plate 8 is positioned on top of the lifting plate 5. In this embodiment, after the extension end of the lifting cylinder 4 lifts the lifting plate 5, the lifting plate 5 lifts the deep groove ball bearings 7 via the fixed shaft 6. The deep groove ball bearings 7 lift the aluminum plate, facilitating the alignment mechanism's correction and alignment of the aluminum plate. During the alignment mechanism's correction and alignment of the aluminum plate, the deep groove ball bearings 7 also facilitate the lateral movement of the aluminum plate. The fixed plate 8 is welded and fixed to the fixed shaft 6, and bolted to the top of the lifting plate 5. The height of the top of the deep groove ball bearings 7 is lower than the height of the top of the rollers on the roller bed 1, to avoid the deep groove ball bearings 7 affecting the conveying of the aluminum plate on the roller bed 1.

[0035] The transmission assembly includes a gear box 11, a gear shaft 13, and a cylindrical gear 15. Support side plates 10 are provided on both sides of the middle part of the support plate 2 9. The gear box 11 is located on the top of the support plate 2 9 and the support side plates 10. The gear shaft 13 is vertically arranged on the top of the support plate 2 9 and located inside the gear box 11. A deep groove ball bearing 2 14 is provided at the upper end of the gear shaft 13. The cylindrical gear 15 is rotatably connected to the gear shaft 13 through the deep groove ball bearing 2 14. A gear box cover 12 is provided on the top of the gear box 11. In this embodiment, the support side plate 10 is welded and fixed to the support plate 2 9, and the gear box 11 is bolted to the top of the support side plate 10. The support side plate 10 and the support plate 2 9 support the gear box 11. The gear box 11 and the gear box cover 12 protect the cylindrical gear 15. The gear box cover 12 is bolted to the top of the gear box 11. The top of the gear shaft 13 is also bolted to the gear cover. The gear cover presses and fixes the cylindrical gear 15 to prevent the cylindrical gear 15 from detaching from the gear shaft 13.

[0036] The centering assembly includes a cylindrical rack 17, a centering wheel bracket 18, a double-row deep groove ball bearing 20, and two self-lubricating copper sleeves 16. One end of the cylindrical rack 17 passes through the gear box 11 and meshes with the cylindrical gear 15. The two self-lubricating copper sleeves 16 are slidably sleeved on the cylindrical rack 17 and are respectively disposed on the two side plates of the gear box 11. In this embodiment, both side plates of the gearbox 11 have through holes for the cylindrical rack 17 to pass through. Self-lubricating copper sleeves 16 are bolted to the through holes. One self-lubricating copper sleeve 16 is bolted to the outside of the side plate of the gearbox 11 and extends into the inside of the gearbox 11. The other self-lubricating copper sleeve 16 is bolted to the inside of the side plate of the gearbox 11. The self-lubricating copper sleeve 16 facilitates the lateral movement of the cylindrical rack 17 and also plays a role in limiting and guiding the movement of the cylindrical rack 17. Through the meshing of the cylindrical racks 17 of the two centering components with the cylindrical gears 15, when one cylindrical rack 17 moves, it drives the other cylindrical rack 17 to rotate synchronously. The two cylindrical racks 17 move in opposite directions, realizing the centering effect of the centering components to correct and center the aluminum plate.

[0037] The centering wheel bracket 18 has an "L" shaped structure. A round nut 21 is fixedly installed at the lower end of the vertical part of the centering wheel bracket 18. The other end of the cylindrical rack 17 is provided with an external thread. The round nut 21 is threadedly connected to the cylindrical rack 17. A centering pin 19 is provided on the horizontal part of the centering wheel bracket 18. The double-row deep groove ball bearing 20 is sleeved on the centering pin 19. In this embodiment, the height of the upper surface of the horizontal part of the centering wheel bracket 18 is lower than the height of the top of the roller of the roller bed 1. The purpose is to avoid the centering wheel bracket 18 affecting the conveying of the aluminum plate when the aluminum plate is conveyed on the roller bed 1. The round nut 21 is welded and fixed to the vertical part of the centering wheel bracket 18. The centering wheel bracket 18 is installed at the end of the cylindrical rack 17 away from the gear box 11 by the round nut 21. The centering pin 18 is vertically fixed to the horizontal part of the centering wheel bracket 18. When the two cylindrical racks 17 move and the centering wheel brackets 18 at the ends of the two cylindrical racks 17 approach each other, the double row deep groove ball bearing 20 contacts the side of the aluminum plate. The two cylindrical racks 17 continue to move, and the double row deep groove ball bearing 20 pushes the lifted aluminum plate. After the double row deep groove ball bearings 20 of the two centering components are in contact with the side of the aluminum plate, the correction and centering operation of the aluminum plate is completed.

[0038] The drive assembly includes a centering cylinder 26 and a U-shaped seat 27. A strip plate 24 is symmetrically arranged at the bottom of the second support plate 9, and a T-shaped seat 25 is arranged at the bottom of the strip plate 24. The centering cylinder 26 is positioned between two of the T-shaped seats 25, and its telescopic end is connected to the U-shaped seat 27. In this embodiment, the strip plate 24 is welded and fixed to the bottom of the second support plate 9, and the T-shaped seats 25 are bolted to the bottom of the strip plate 24. The two ends of the centering cylinder 26 are bolted to the two T-shaped seats 25 respectively.

[0039] One of the cylindrical racks 17 has a hinge bracket 28 on its outer side and a sliding groove 23 on its inner side. The hinge bracket 28 has an "L" shape and its horizontal part is hinged to the U-shaped seat 27. A slider 22 is fixedly installed on the inner side of the self-lubricating copper sleeve 16 sleeved on the cylindrical rack 17. The slider 22 is slidably installed in the sliding groove 23. In this embodiment, the hinge bracket 28 is bolted to the outside of the cylindrical rack 17. When the centering cylinder 26 is opened, the telescopic end of the centering cylinder 26 drives the U-shaped seat 27 to telescopically move, which in turn drives the hinge bracket 28 to telescopically move, and the hinge bracket 28 drives one of the cylindrical racks 17 to move. When the telescopic end of the centering cylinder 26 retracts, it drives the hinge bracket 28 towards the gear box 11 via the U-shaped seat 27. At this time, the double-row deep groove ball bearings 20 of the two centering components move closer to each other to perform the alignment and centering operation on the aluminum plate. When the telescopic end of the centering cylinder 26 extends, it drives the hinge bracket 28 away from the gear box 11 via the U-shaped seat 27. At this time, the double-row deep groove ball bearings 20 of the two centering components move away from each other, completing the alignment and centering operation on the aluminum plate.

[0040] The working principle of this utility model is as follows: After the aluminum plate is polished, it is conveyed to the roller bed. After the roller bed conveys the aluminum plate to the stacking equipment, the lifting cylinders 4 of multiple lifting mechanisms are started at the same time. The telescopic end of the lifting cylinder 4 extends and drives the lifting plate 5 to rise. The lifting plate 5 lifts the deep groove ball bearing 7 upward through the fixed shaft 6. The deep groove ball bearing 7 contacts the bottom of the aluminum plate and lifts the aluminum plate upward.

[0041] After the aluminum plate is lifted upwards by the lifting mechanism, the centering cylinders 26 of multiple centering mechanisms are activated simultaneously. The telescopic ends of the centering cylinders 26 retract, which in turn drive the U-shaped seat 27 to retract. The U-shaped seat 27 drives the hinged bracket 28 to move, and the hinged bracket 28 drives one of the cylindrical racks 17 to move. Through the meshing of the cylindrical rack 17 and the cylindrical gear 15, the two cylindrical racks 17 move synchronously and in opposite directions. The centering wheel brackets 18 at the ends of 17 move closer to each other, and the two centering wheel brackets 18 drive the double-row deep groove ball bearings 20 to move closer to each other. Then, one of the double-row deep groove ball bearings 20 first contacts the side of the aluminum plate. The two cylindrical racks 17 continue to move, and the double-row deep groove ball bearings 20 push the lifted aluminum plate. The aluminum plate moves on the deep groove ball bearing 7. After the double-row deep groove ball bearings 20 of the two centering components have both contacted the side of the aluminum plate, the correction and centering operation of the aluminum plate is completed. Then, the telescopic end of the centering cylinder 26 extends, and the centering wheel brackets 18 at the ends of the two cylindrical racks 17 move away from each other. The two centering wheel brackets 18 drive the double-row deep groove ball bearings 20 to move away from each other. After the two double-row deep groove ball bearings 20 are reset, the centering cylinder 26 is closed. Then, the telescopic end of the lifting cylinder 4 retracts and drives the lifting plate 5 to descend. The lifting plate 5 drives the deep groove ball bearing 7 to descend through the fixed shaft 6. The deep groove ball bearing 7 drives the aluminum plate to descend and makes the aluminum plate fall back onto the roller bed 1, completing the correction and centering operation of the aluminum plate. Then, wait for the stacking equipment to pick up the aluminum plate for stacking operation.

[0042] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.

Claims

1. An aluminum plate lifting and centering device, comprising a roller bed (1), characterized in that, The roller bed (1) is provided with a plurality of lifting mechanisms and centering mechanisms at intervals, and the lifting mechanisms and centering mechanisms are respectively located between two adjacent idler rollers of the roller bed (1); The lifting mechanism includes a support plate (2) and a lifting structure spaced apart on the top of the support plate (2). The lifting structure includes a lifting component and a power component for driving the lifting component to perform lifting and lowering movements. The centering mechanism includes a second support plate (9), a drive assembly, a transmission assembly, and two centering assemblies with opposite directions of movement. The drive assembly is located at the bottom of the second support plate (9), and one of the centering assemblies is connected to the drive assembly. The transmission assembly is located at the top of the second support plate (9), and the transmission assembly drives and connects the two centering assemblies.

2. The aluminum plate lifting and centering device according to claim 1, characterized in that, The power assembly includes a lifting cylinder (4) and a lifting plate (5). The top of the support plate (2) is provided with an installation groove (3). The lifting cylinder (4) is fixedly installed in the installation groove (3). The telescopic end of the lifting cylinder (4) is connected to the lifting plate (5).

3. The aluminum plate lifting and centering device according to claim 2, characterized in that, The lifting assembly includes a fixed shaft (6) and a deep groove ball bearing (7). The deep groove ball bearing (7) is provided at both ends of the fixed shaft (6). A fixing plate (8) is symmetrically provided in the middle of the fixed shaft (6). The fixing plate (8) is located on the top of the lifting plate (5).

4. The aluminum plate lifting and centering device according to claim 1, characterized in that, The transmission assembly includes a gear box (11), a gear shaft (13), and a cylindrical gear (15). Support side plates (10) are provided on both sides of the middle part of the second support plate (9). The gear box (11) is located on the top of the second support plate (9) and the support side plates (10). The gear shaft (13) is vertically arranged on the top of the second support plate (9) and located inside the gear box (11). A deep groove ball bearing (14) is provided at the upper end of the gear shaft (13). The cylindrical gear (15) is rotatably connected to the gear shaft (13) through the deep groove ball bearing (14). A gear box cover (12) is provided on the top of the gear box (11).

5. The aluminum plate lifting and centering device according to claim 4, characterized in that, The centering assembly includes a cylindrical rack (17), a centering wheel bracket (18), a double-row deep groove ball bearing (20), and two self-lubricating copper sleeves (16). One end of the cylindrical rack (17) passes through the gear box (11) and meshes with the cylindrical gear (15). The two self-lubricating copper sleeves (16) are slidably sleeved on the cylindrical rack (17) and are respectively disposed on the two side plates of the gear box (11).

6. The aluminum plate lifting and centering device according to claim 5, characterized in that, The centering wheel bracket (18) has an "L" shaped structure. A round nut (21) is fixedly installed at the lower end of the vertical part of the centering wheel bracket (18). The other end of the cylindrical rack (17) is provided with an external thread. The round nut (21) is threadedly connected to the cylindrical rack (17). A centering pin (19) is provided on the horizontal part of the centering wheel bracket (18). The double-row deep groove ball bearing (20) is sleeved on the centering pin (19).

7. The aluminum plate lifting and centering device according to claim 5, characterized in that, The drive assembly includes a centering cylinder (26) and a U-shaped seat (27). A strip plate (24) is symmetrically arranged at the bottom of the second support plate (9). A T-shaped seat (25) is arranged at the bottom of the strip plate (24). The centering cylinder (26) is arranged between the two T-shaped seats (25). The telescopic end of the centering cylinder (26) is connected to the U-shaped seat (27).

8. The aluminum plate lifting and centering device according to claim 7, characterized in that, One of the cylindrical racks (17) has a hinge bracket (28) on its outer side and a sliding groove (23) on its inner side. The hinge bracket (28) has an "L" shaped structure. The horizontal part of the hinge bracket (28) is hinged to the U-shaped seat (27). A slider (22) is fixedly provided on the inner side of the self-lubricating copper sleeve (16) sleeved on the cylindrical rack (17). The slider (22) is slidably disposed in the sliding groove (23).

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