A grinding device for sheet metal processing

Abstract

This utility model relates to the technical field of grinding devices, specifically disclosing a grinding device for sheet metal processing. It includes a wide-surface grinding mechanism for the sheet metal, a long-side grinding mechanism for the sheet metal on one side of the wide-surface grinding mechanism, and a sheet metal conveying mechanism at the end of the wide-surface grinding mechanism away from the long-side grinding mechanism. The wide-surface grinding mechanism of this design uses adjustable grinding rollers arranged symmetrically. The height of the lifting frame is precisely controlled by a cylinder, ensuring close contact between the grinding rollers and sheets of different thicknesses, guaranteeing uniform grinding pressure distribution. Simultaneously, the high-speed rotation of the grinding rollers driven by dual motors, combined with the continuous feeding of the conveyor belt, allows for fine grinding of the entire wide-surface area in one pass, avoiding the surface unevenness caused by uneven force in traditional manual grinding. For the long-side, a linkage structure between a threaded sleeve and a limiting rod allows the two grinding discs to adaptively adjust their spacing, precisely clamping the edge of the sheet metal and grinding it synchronously.

Description

Technical Field

[0001] This utility model relates to the field of grinding device technology, and specifically discloses a grinding device for plate processing. Background Technology

[0002] Sanding is an indispensable step in the processing of sheet materials, aiming to improve their surface quality, safety, and functionality. Whether it's metal, wood, plastic, or stone, sanding is a crucial step in ensuring the quality of the final product.

[0003] Sanding is a crucial step in the wood processing of boards. Through appropriate sanding methods and processes, the surface quality, safety, and functionality of boards can be significantly improved, ensuring the high quality and long lifespan of the final product. According to authorization announcement number CN219293479U, a board sanding machine is disclosed, relating to the field of wood processing. The machine frame has a lower support plate and an upper support plate. A rotating shaft is rotatably connected between the upper and lower support plates. Sanding blades are arranged in a circular array around the axis of the rotating shaft. A motor bracket is located on one side of the rotating shaft, and a drive motor is mounted on the motor bracket. The upper support plate has a first through hole for the drive motor to pass through and a second through hole for the upper end of the rotating shaft to pass through. The drive motor has a main gear, and a driven gear is located at the upper end of the rotating shaft. A fixed seat is located on the upper surface of the support plate, and an intermediate gear is rotatably mounted on the fixed seat. One end of the intermediate gear meshes with the main gear, and the other end meshes with the driven gear. Buffer devices are provided on opposite side walls of the machine frame, and the rotating shaft is positioned between the two buffer devices. The drive shaft rotates multiple grinding blades. As the wooden board passes between the two devices, the grinding blades grind the board quickly and efficiently, saving manpower.

[0004] Currently, after the boards are cut and pressed, a semi-finished board structure is formed. The surface of the board will be uneven. In particular, some of the unevenness is minor and can be removed and leveled manually, which is relatively time-consuming and labor-intensive. If the board itself is large and long, it is quite arduous to clean the top and bottom wide surfaces and long side edges with a handheld grinder. Furthermore, the unevenness of the board surface greatly reduces the adhesion of paint or other decorative layers. Moreover, the uneven areas will become more obvious after the decorative layers are attached, affecting the overall quality of the board. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a grinding device for processing sheet metal, which can perform large-area surface leveling when the sheet metal is large and long, and at the same time, can process the long side parts simultaneously, reduce the workload of workers, and improve the smoothness of the sheet metal surface.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grinding device for processing sheet metal, comprising a sheet metal wide-side grinding mechanism, a sheet metal long-side side grinding mechanism provided on one side of the sheet metal wide-side grinding mechanism, and a sheet metal conveying mechanism provided at the end of the sheet metal wide-side grinding mechanism away from the sheet metal long-side side grinding mechanism.

[0007] Furthermore, the wide-surface grinding mechanism for the sheet metal includes a base, with a central frame positioned at the top center of the base. Cylinders are distributed at both the upper and lower ends of the inner wall of the central frame. Each cylinder contains a piston rod for extension and retraction. Lifting frames are located at the ends of two piston rods arranged in the same horizontal row. Positioning bearings are embedded on both sides of the lifting frames. A common positioning shaft runs through the inner ring wall of the two positioning bearings arranged on both sides. The surface of the positioning shaft is interference-fitted with the inner ring wall of the positioning bearing. A motor is located at the outer end of the positioning shaft. A driving shaft is located inside the motor. One end of the driving shaft is fixed to the end of the positioning shaft via a coupling. A grinding roller for rotating and smoothing is located inside the lifting frames.

[0008] Furthermore, a support platform one is provided on the side of the base near the central frame, and a support platform two is provided at the same end of the base on the support platform one. The upper surface of the support platform one and the upper surface of the support platform two are on the same horizontal plane.

[0009] Furthermore, the long side grinding mechanism of the plate includes an extension frame, one end of which is set on the end face of the central frame, and the lower end of the extension frame is symmetrically provided with support columns, the lower end of which is set on the upper end of the base.

[0010] Furthermore, the upper end of the extension frame is provided with a sleeve, and a shaft is rotatably installed inside the sleeve. A second motor is provided at the end of the shaft away from the sleeve. A second rotating shaft for driving is provided inside the second motor. The end of the second rotating shaft is fixedly connected to the end of the shaft through a coupling. The surface of the shaft is provided with an external thread. The external thread has two ends and is symmetrically distributed along the surface of the shaft. A threaded sleeve is installed on the surface of the external thread. A limit rod is provided at the lower end of the threaded sleeve. A limit hole is opened at the upper end of the extension frame. The two sides of the limit rod are slidably disposed with the inner side of the limit hole.

[0011] Furthermore, a motor three is provided below the limiting rod. The surface of the motor three is fixedly assembled with the end of the limiting rod through a coupling. The motor three has a rotating shaft three for driving inside, and a grinding disc is provided on the rotating shaft three.

[0012] Furthermore, the plate conveying mechanism includes side platforms, which are symmetrically distributed along the longitudinal central axis of the base, and the upper ends of the two side platforms distributed along the inner side are jointly equipped with the same feeding table.

[0013] Several sets of linkage components are set above the feeding platform. The linkage components include linkage bearings. The lower end of the outer ring wall of the linkage bearing is fixedly installed to the surface of the feeding platform through the bracket. The same linkage roller is installed through the interior of two linkage bearings distributed in the same transverse direction. The surface of the linkage roller is interference-fitted with the inner ring wall of the linkage bearing. A linkage belt roller is installed through the surface of the linkage roller.

[0014] Furthermore, a drive assembly is provided at the end of the feeding platform away from the central frame. The drive assembly includes a drive bearing. The lower end of the outer ring wall of the drive bearing is fixedly installed to the surface of the feeding platform through a bracket. The same drive roller shaft is installed through the interior of two drive bearings distributed on both sides. The surface of the drive roller shaft is interference-fitted with the inner ring wall of the drive bearing. A drive belt roller is installed through the surface of the drive roller shaft. The surface of the drive belt roller and the surface of several linkage belt rollers are connected by a conveyor belt.

[0015] Furthermore, a motor is provided at the outer end of the drive roller shaft, and a rotating shaft for driving is provided inside the motor. The end of the rotating shaft is fixedly connected to the end of the drive roller shaft through a coupling.

[0016] Furthermore, several cylinders are distributed on both sides of the feeding platform. Inside each cylinder is a piston rod for extension and retraction. The ends of the several piston rods distributed along one side are provided with the same limiting plate.

[0017] The working principle and beneficial effects of this solution are as follows: 1. The wide-surface grinding mechanism of this solution adopts adjustable grinding rollers arranged symmetrically on the upper and lower sides. The height of the lifting frame is precisely controlled by the cylinder, so that the grinding rollers are closely fitted with plates of different thicknesses, ensuring uniform distribution of grinding pressure. At the same time, the grinding rollers driven by dual motors rotate at high speed, and with the continuous feeding of the conveyor belt, fine grinding of the entire wide surface area can be completed in one go, avoiding the problem of uneven surface caused by uneven force in traditional manual grinding. For the long side, through the linkage structure of the threaded sleeve and the limiting rod, the two grinding discs can adaptively adjust the distance, accurately clamp the edge of the plate and grind it synchronously, solving the problem of needing to grind in sections due to the arm span limitation during manual operation, and significantly improving the continuity and accuracy of long side grinding.

[0018] 2. As described in 1, the conveying mechanism uses a motor-driven belt conveyor, and the linkage roller group ensures the smooth movement of the board. Workers only need to place the raw materials to complete the subsequent processing, avoiding the physical labor of handling heavy boards. The long-side grinding mechanism controls the movement of the limit rod in opposite directions by the forward and reverse rotation of motor two, without the need for manual adjustment of the fixture position. The lifting frame for wide-side grinding is automatically adjusted by a cylinder, eliminating the tedious step of manually calibrating the height. In addition, the combination design of the limit plate and cylinder two can dynamically correct the position of the board during the conveying process to prevent grinding defects caused by deviation.

[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the distribution of the various mechanisms in the embodiment;

[0021] Figure 2 This is a front view of the overall structure of the embodiment;

[0022] Figure 3 This is a side view of the overall structure of the embodiment;

[0023] Figure 4 This is a partially enlarged schematic diagram of the central frame portion of the embodiment;

[0024] Figure 5 This is an enlarged schematic diagram of point A in the embodiment;

[0025] Figure 6 This is a top view of the conveyor belt distribution in an embodiment.

[0026] The following are marked in the attached diagram: 1. Wide surface grinding mechanism for sheet metal; 2. Long side grinding mechanism for sheet metal; 3. Sheet metal conveying mechanism; 10. Base; 11. Center frame; 12. Cylinder 1; 13. Lifting frame; 14. Positioning bearing; 15. Positioning shaft; 16. Grinding roller; 17. Motor 1; 1001. Support platform 1; 1002. Support platform 2; 20. Extension frame; 21. Support column; 22. Rod sleeve; 23. Shaft. 24. Motor II; 25. External thread; 26. Threaded sleeve; 27. Limiting hole; 28. Limiting rod; 29. ​​Motor III; 210. Grinding disc; 30. Side platform; 31. Feeding table; 32. Linkage bearing; 33. Linkage roller shaft; 34. Linkage belt roller; 35. Drive bearing; 36. Drive roller shaft; 37. Drive belt roller; 38. Conveyor belt; 39. Motor IV; 3001. Cylinder II; 3002. Limiting plate. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation methods:

[0028] Example

[0029] like Figures 1 to 6As shown, a grinding device for processing sheet metal is disclosed, including a sheet metal wide-side grinding mechanism 1, a sheet metal long-side side grinding mechanism 2 is provided on one side of the sheet metal wide-side grinding mechanism 1, and a sheet metal conveying mechanism 3 is provided at the end of the sheet metal wide-side grinding mechanism 1 away from the sheet metal long-side side grinding mechanism 2.

[0030] The wide-surface sanding mechanism 1 for sheet metal includes a base 10, which is rectangular in structure. A central frame 11 is located at the top center of the base 10. The lower end of the central frame 11 is fixed to the surface of the base 10 with screws. The central frame 11 has a U-shaped structure. Cylinders 12 are distributed at both the upper and lower ends of the inner wall of the central frame 11. The cylinders 12 are symmetrically distributed along the longitudinal axis of the central frame 11. One end of the cylinder 12 is fixed to the inner wall of the central frame 11 with screws. A piston rod for extension and retraction is installed inside the cylinder 12. Lifting frames 13 are installed at the ends of the two piston rods distributed in the same horizontal row. One side of the lifting frame 13 is fixed to the end of the piston rod with screws. The lifting frame 13 has a U-shaped structure. Positioning bearings 14 are embedded on both sides of the lifting frame 13. The outer ring wall of the positioning bearing 14 is fixed to the connection position of the lifting frame 13 with screws. The same positioning shaft 15 is installed through the inner ring wall of the two positioning bearings 14 distributed on both sides. The surface of the positioning shaft 15 is connected to the inner ring wall of the positioning bearing 14. The ring wall is interference-fitted. A motor 17 is mounted on the outer end of the positioning shaft 15. The outer wall of the motor 17 is fixedly mounted to the surface of the lifting frame 13 via a bracket. A drive shaft 1 is located inside the motor 17. One end of the drive shaft 1 is fixed to the end of the positioning shaft 15 via a coupling. A grinding roller 16 for rotating and smoothing is located inside the lifting frame 13. The interior of the grinding roller 16 penetrates the positioning shaft 15, and the connection between the grinding roller 16 and the positioning shaft 15 is fixed with screws. When the wide surface of the board needs to be sanded, the height of the lifting frame 13 can be adjusted by extending and retracting the piston rod of cylinder 12 according to the thickness of the board. This allows the sanding roller 16 to come into contact with the wide surface of the board. As the board is continuously conveyed forward, the power of motor 17 is turned on, so that the rotating shaft of motor 17 can be driven and drive the positioning shaft 15 to move in linkage. The positioning shaft 15 can then rotate the sanding roller 16, which can achieve the smoothing and polishing of the wide surface of the board.

[0031] A support platform 1001 is provided on one side of the base 10 near the center frame 11. The lower end of the support platform 1001 is fixed to the surface of the base 10 with screws. The support platform 1001 can provide the first stage support for the feeding process after the upper and lower grinding rollers 16 grind the wide surface of the plate. A support platform 2 1002 is provided on the same end of the base 10 at the support platform 1001. The lower end of the support platform 2 1002 is fixed to the surface of the base 10 with screws. The support platform 2 1002 can provide the second stage support when the support platform 1001 provides transition support after feeding the plate, ensuring the stability of the feeding process after the plate is ground, and facilitating the worker to receive the material from the discharge end. The upper surface of the support platform 1001 and the upper surface of the support platform 2 1002 are on the same horizontal plane, and also on the same horizontal plane as the upper surface of the conveyor belt 38.

[0032] The long side grinding mechanism 2 of the board includes an extension frame 20. One end of the extension frame 20 is set on the end face of the center frame 11. The connection between the extension frame 20 and the center frame 11 is fixed by screws. The lower end of the extension frame 20 is symmetrically provided with support columns 21. The lower end of the support columns 21 is set on the upper end of the base 10. The two ends of the support columns 21 are respectively fixed to the bottom of the extension frame 20 and the surface of the base 10 by screws. The support columns 21 can ensure the stable support of the extension frame 20.

[0033] An extension frame 20 has a sleeve 22 at its upper end. The lower end of the outer ring wall of the sleeve 22 is fixedly assembled to the surface of the extension frame 20 via a bracket. A shaft 23 is rotatably mounted inside the sleeve 22. A motor 24 is located at the end of the shaft 23 away from the sleeve 22. A drive shaft 24 is located inside the motor 24. The end of the drive shaft 24 is fixedly connected to the end of the shaft 23 via a coupling. The surface of the shaft 23 has an external thread 25, which has two ends and is symmetrically distributed along the surface of the shaft 23. A threaded sleeve 26 is threaded onto the surface of the external thread 25. A limit rod 28 is located at the lower end of the threaded sleeve 26. The limit rod 28 is a square rod structure. The connection position between the limit rod 28 and the threaded sleeve 26 is through... The upper end of the extension frame 20 is fixed with screws and has a limit hole 27. The two sides of the limit rod 28 are slidably set with the inner side of the limit hole 27. When the limit rod 28 needs to be driven, the power supply of the motor 24 is turned on. The motor 24 is connected to a forward and reverse switch through wires. The forward and reverse switch can operate the motor 24 in both directions and make the shaft 2 rotate in both directions. At this time, the shaft 2 can drive the shaft 23 to move together and make the external thread 25 rotate together, thereby driving the threaded sleeve 26 to move. By sliding the limit rod 28 itself on the inner side of the limit hole 27, and with the two external threads 25 symmetrically distributed, the two limit rods 28 can move closer or further away from each other at the same time, and ensure the stability of their horizontal movement.

[0034] A motor 29 is located below the limiting rod 28. The surface of the motor 29 is fixedly assembled to the end of the limiting rod 28 via a coupling. Inside the motor 29 is a rotating shaft 210 for driving. The grinding disc 210 is mounted on the rotating shaft 29. The connection between the grinding disc 210 and the rotating shaft 210 is reinforced by a reinforcing block. By simultaneously moving the two limiting rods 28 in opposite directions or away from each other, the two motors 29 can move synchronously, allowing the two grinding discs 210 to move synchronously, adjusting their spacing, and performing grinding on the board. After the wide-side sander is sent out, it directly contacts the long side of the board to achieve synchronous sanding, which can further improve the overall sanding efficiency of the board. For the short side of the board, the worker can directly hold the sander and sand within the range of his arm span. However, for the long side, which is beyond the range of arm span, the worker needs to run back and forth, which is time-consuming and laborious, and is also prone to uneven sanding. Therefore, by using the sanding roller 16 and sanding disc 210 to mechanically process the edges or surfaces that the worker cannot sand in one go, the accuracy and efficiency of the sanding can be improved.

[0035] The sheet material conveying mechanism 3 includes side platforms 30, which are symmetrically distributed along the longitudinal central axis of the base 10. The lower end of the side platforms 30 is fixedly installed to the upper end of the base 10 by screws. The upper ends of the two side platforms 30 distributed along the inner side are jointly installed with the same feeding table 31. Several linkage components are arranged above the feeding table 31. The linkage components include linkage bearings 32. The lower end of the outer ring wall of the linkage bearing 32 is fixedly installed to the surface of the feeding table 31 by a bracket. The two linkage bearings 32 distributed along the same transverse direction are connected by the same linkage roller 33. The surface of the linkage roller shaft 33 is interference-fitted with the inner ring wall of the linkage bearing 32. A linkage belt roller 34 is provided through the surface of the linkage roller shaft 33. The connection position between the linkage belt roller 34 and the linkage roller shaft 33 is fixed by screws. A drive assembly is also provided at the end of the feeding table 31 away from the center frame 11. The drive assembly includes a drive bearing 35. The lower end of the outer ring wall of the drive bearing 35 is fixedly installed to the surface of the feeding table 31 by a bracket. The same drive roller shaft 36 is provided through the interior of two drive bearings 35 distributed on both sides. The surface of the drive roller shaft 36 is interference-fitted with the inner ring wall of the drive bearing 32. The inner ring wall of bearing 35 is interference-fitted. A drive belt roller 37 is provided through the surface of the drive roller shaft 36. The connection between the drive belt roller 37 and the drive roller shaft 36 is fixed by screws. The surface of the drive belt roller 37 and the surfaces of several linkage belt rollers 34 are connected by a conveyor belt 38. A motor 39 is provided at the outer end of the drive roller shaft 36. The outer wall of the motor 39 is fixedly installed to the side of the feeding table 31 by a bracket. The motor 39 has a drive shaft 4 inside. The end of the drive shaft 4 is fixedly connected to the end of the drive roller shaft 36 by a coupling. When conveying the material during the grinding process, the power supply of motor 4 39 is turned on, which drives the rotating shaft 4 and makes the drive roller 36 rotate together, thereby driving the belt roller 37 to rotate and driving the conveyor belt 38. Through the cooperation of several linkage rollers 34, the conveyor belt 38 can be rotated stably. The material is placed on the conveyor belt 38, and the material can be moved forward stably. The material itself is long and large, and its weight is relatively heavy. There is no need to add an upper and lower positioning mechanism during grinding, and the upper and lower position of the material can be kept stable during the grinding process.

[0036] Several cylinders 3001 are distributed on both sides of the feeding table 31. The cylinders 3001 have piston rods for extension and retraction inside. The ends of the piston rods distributed along one side are provided with the same limiting plate 3002. The limiting plate 3002 is fixed to the corresponding piston rod ends by screws. The lower end of the cylinders 3001 is fixedly installed to the side wall of the feeding table 31 by a bracket. The limiting plates 3002 distributed along both sides can limit the position of the plate on both sides and slide in contact during the grinding and conveying of the plate, so as to prevent large positional deviation when the plate enters the position of the grinding roller 16 for grinding the upper and lower wide surfaces.

[0037] In practice

[0038] The grinding mechanism 1 of this scheme mainly uses grinding rollers 16 arranged symmetrically to grind the upper and lower wide surfaces of the board at the same time. Its core driving component is cylinder 12. The height of the lifting frame 13 is adjusted by the extension and retraction of the piston rod so that the grinding rollers 16 can be closely attached to the surface of the board with different thicknesses. Motor 17 drives the positioning shaft 15 to rotate, which drives the grinding rollers 16 to rotate at high speed to achieve grinding of the wide surface of the board. The board is continuously fed into the grinding area by the conveyor belt 38. Under the combined action of the upper and lower grinding rollers, the flatness and smoothness of the wide surface are ensured. Support platform 1001 and support platform 2 1002 support the board in stages after grinding to ensure the stability of the output.

[0039] The long side grinding mechanism 2 of the board material synchronously grinds the long side of the board material through symmetrically arranged grinding discs 210. Motor 24 drives the shaft 23 to rotate, and the external thread 25 drives the threaded sleeve 26 to move horizontally, so that the limit rod 28 slides along the limit hole 27. The distance between the two grinding discs 210 is adjusted to adapt to boards of different widths. Motor 3 29 drives the grinding disc 210 to rotate and grind the long side of the board material in the conveyor, which solves the problems of low efficiency and unevenness when manually grinding the long side.

[0040] The sheet material conveying mechanism 3 achieves continuous feeding of the sheet material via the conveyor belt 38. The motor 4 39 drives the drive roller shaft 36 to rotate, which in turn drives the drive belt roller 37 and the conveyor belt 38 to move. The linkage roller 34 assists in maintaining the smooth operation of the conveyor belt. The cylinder 2 3001 pushes the limit plate 3002 to clamp the sheet material from both sides to prevent it from shifting during the grinding process. The uniform movement of the conveyor belt 38 ensures that the sheet material passes smoothly through the wide and side grinding areas without the need for additional positioning devices.

[0041] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A grinding device for processing sheet metal, characterized in that: It includes a wide-side sanding mechanism for the board, a long-side sanding mechanism for the board is provided on one side of the wide-side sanding mechanism, and a board conveying mechanism is provided at the end of the wide-side sanding mechanism away from the long-side sanding mechanism.

2. The polishing apparatus for processing a plate material according to claim 1, characterized by: The wide-surface grinding mechanism for sheet metal includes a base, with a central frame positioned at the top center of the base. Cylinders are distributed at both the upper and lower ends of the inner wall of the central frame. Each cylinder contains a piston rod for extension and retraction. Lifting frames are located at the ends of two piston rods arranged in the same horizontal row. Positioning bearings are embedded on both sides of the lifting frames. A common positioning shaft runs through the inner ring wall of the two positioning bearings, with the surface of the positioning shaft interference-fitted to the inner ring wall of the positioning bearing. A motor is located at the outer end of the positioning shaft, with a driving shaft inside. One end of the driving shaft is fixed to the end of the positioning shaft via a coupling. A grinding roller for rotating and smoothing is located inside the lifting frames.

3. The polishing apparatus for processing a plate material according to claim 2, characterized by: A support platform one is provided on the side of the base near the center frame, and a support platform two is provided at the same end of the base on the support platform one. The upper surface of the support platform one and the upper surface of the support platform two are on the same horizontal plane.

4. The grinding device for plate processing according to claim 3, characterized in that: The long side grinding mechanism of the plate includes an extension frame. One end of the extension frame is set on the end face of the central frame, and the lower end of the extension frame is symmetrically distributed with support columns. The lower end of the support columns is set on the upper end of the base.

5. A grinding device for processing sheet metal according to claim 4, characterized in that: The upper end of the extension frame is provided with a sleeve, and a shaft is rotatably installed inside the sleeve. A second motor is provided at the end of the shaft away from the sleeve. A second rotating shaft for driving is provided inside the second motor. The end of the second rotating shaft is fixedly connected to the end of the shaft through a coupling. The surface of the shaft is provided with external threads. The external threads are provided at both ends and are symmetrically distributed along the surface of the shaft. A threaded sleeve is installed on the surface of the external threads. A limit rod is provided at the lower end of the threaded sleeve. A limit hole is opened at the upper end of the extension frame. The two sides of the limit rod are slidably disposed with the inner side of the limit hole.

6. A grinding device for processing sheet metal according to claim 5, characterized in that: A motor is located below the limiting rod. The surface of the motor is fixedly assembled to the end of the limiting rod via a coupling. The motor has a drive shaft inside, and a grinding disc is mounted on the shaft.

7. A grinding device for sheet metal processing according to claim 6, characterized in that: The plate conveying mechanism includes side platforms, which are symmetrically distributed along the longitudinal central axis of the base. The upper ends of the two side platforms distributed along the inner side of the base are jointly equipped with the same feeding platform. Several sets of linkage components are set above the feeding platform. The linkage components include linkage bearings. The lower end of the outer ring wall of the linkage bearing is fixedly installed to the surface of the feeding platform through the bracket. The same linkage roller is installed through the interior of two linkage bearings distributed in the same transverse direction. The surface of the linkage roller is interference-fitted with the inner ring wall of the linkage bearing. A linkage belt roller is installed through the surface of the linkage roller.

8. A grinding device for processing sheet metal according to claim 7, characterized in that: A drive assembly is also provided at one end of the feeding platform away from the central frame. The drive assembly includes a drive bearing. The lower end of the outer ring wall of the drive bearing is fixedly installed to the surface of the feeding platform through a bracket. The same drive roller shaft is installed through the interior of two drive bearings distributed on both sides. The surface of the drive roller shaft is interference-fitted with the inner ring wall of the drive bearing. A drive belt roller is installed through the surface of the drive roller shaft. The surface of the drive belt roller and the surface of several linkage belt rollers are connected by a conveyor belt.

9. A grinding device for processing sheet metal according to claim 8, characterized in that: The outer end of the drive roller shaft is equipped with a motor four, and the motor four is equipped with a rotating shaft four for driving. The end of the rotating shaft four is fixedly connected to the end of the drive roller shaft through a coupling.

10. A grinding device for processing sheet metal according to claim 9, characterized in that: Several cylinders are distributed on both sides of the feeding platform. Inside each cylinder is a piston rod for extension and retraction. The ends of the several piston rods distributed along one side are provided with the same limiting plate.

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