A polishing device for laser processing of a plate

Abstract

The utility model discloses a kind of polishing devices for plate laser processing, it is related to plate polishing field, including left and right mounting frames, left mounting frame is equipped with the brush roll movable along its length direction, and brush roll contains roller core, three section hair-implanting layer and spring telescopic brush head in two installation gaps;Right mounting frame is equipped with receiving plate, and plate material with two rows of waist-shaped holes is placed on receiving plate, when working, adjust the height of brush roll and plate position after fixing plate material, start motor to make brush roll rotate, hair-implanting layer removes plate surface burr, telescopic brush head is self-adapting and inserted into waist-shaped hole to remove dead corner burr, and asynchronous motor drives brush roll reciprocating polishing.The device solves the problem that wire harness collecting groove waist-shaped hole edge dead corner burr is difficult to remove, and ensures the safety of energy storage system.

Description

Technical Field

[0001] This utility model relates to the field of plate grinding, and in particular to a grinding device for laser processing of plates. Background Technology

[0002] In the electrical system of energy storage containers, wire harness manifolds are typically installed to achieve orderly arrangement and protection of the wiring harnesses. These manifolds are usually made of sheet metal, with multiple elongated ventilation holes spaced apart on both sides to balance airflow between the manifold and the outside, preventing insulation aging caused by heat buildup during long-term operation.

[0003] The typical processing flow for wire harness manifolds is as follows: metal sheet blanking → laser cutting to create heat dissipation holes → grinding and deburring → bending and forming. During this process, the high temperature of the laser causes hardened slag (i.e., "burrs") to form at the edges of the holes. These burrs are mainly concentrated at the right-angle intersection of the hole wall and the plate surface, and in the transition zone between the arc end of the elongated hole and the plate surface. Furthermore, the root of the burrs is tightly bonded to the hole wall.

[0004] Existing grinding equipment has limitations in treating wire harness manifolds: Traditional equipment often uses omnidirectional brush rollers or sanding belts, whose core function is to polish the flat surface of the board. However, for the right-angle intersection of the hole wall and the board surface, and the transition area at the arc end of the heat dissipation hole, the integral brush bristles are in a continuous bundle structure, which is rigid and cannot deform independently. They can only brush over the surface of the hole opening, and it is difficult to penetrate into the narrow corners. They cannot effectively contact the root of the burr, nor can they cut the burrs that are close to the hole wall cleanly. Sanding belts are only suitable for polishing large flat surfaces and cannot cover such local small contour corners. In the end, the burrs at the corners of the hole edges cannot be completely removed, resulting in the problem of burr root residue.

[0005] Throughout the assembly and operation cycle, residual burrs are easily detached and formed into metal debris due to factors such as handling, fastening vibration, and system temperature cycling. These debris may remain in critical parts such as wire harness gaps and connector pins during the assembly stage, directly forming conductive bridges and causing local short circuits after power is applied. They may also accumulate continuously during operation and migrate with airflow, damaging the electrical clearance of the wire harness and eventually triggering leakage or short circuit faults, threatening the electrical safety of the energy storage system. Utility Model Content

[0006] To address the aforementioned problems, the purpose of this utility model is to provide a grinding device for laser processing of sheet metal, which solves the problem that existing grinding devices have difficulty removing the burrs at the root of the long waist-shaped heat dissipation holes on the edge of the wire harness collector groove.

[0007] The technical solution of this utility model is as follows: A grinding device for laser processing of sheet metal includes a mounting frame, comprising a left mounting frame and a right mounting frame, which are connected by a connecting column. A horizontally arranged brush roller is rotatably mounted on the left mounting frame and can move along the length of the left mounting frame. A receiving plate is provided on the right mounting frame, on which a sheet metal with oblong holes is placed. Two rows of elongated oblong holes are spaced apart along the width of the sheet metal, each row including multiple oblong holes spaced apart along the length of the sheet metal. The sheet metal extends along the moving direction of the brush roller, and the brush roller is positioned above the sheet metal. The brush roller includes a roller core, and three segments are spaced apart along the width of the sheet metal on the outer periphery of the roller core. The roller core has a bristle layer, with an installation gap between two adjacent bristle layers. Telescopic brush heads are installed in both installation gaps, spaced apart circumferentially along the roller core. The ends of the telescopic brush heads furthest from the roller core protrude from the outer surface of the bristle layer, and their diameter is smaller than the short side dimension of the waist-shaped holes. The position of a telescopic brush head within a single installation gap corresponds to a row of waist-shaped holes. Each telescopic brush head includes a connecting cylinder and a brush head. The brush head slides through the connecting cylinder, which contains a spring. One end of the spring abuts against the outer ring wall of the roller core, and the other end abuts against the end of the brush head closest to the roller core. A motor that moves synchronously with the brush roller is mounted on the mounting frame, and the motor's output shaft is connected to the brush roller via a transmission.

[0008] Furthermore, a horizontally arranged first mounting plate is slidably mounted on the end face of the left mounting bracket. Two vertical sliding rods are spaced apart on the first mounting plate. The ends of the sliding rods away from the left mounting bracket are connected by the horizontal section of an L-shaped fixing plate, and the vertical section of the L-shaped fixing plate is fixedly connected to the left mounting bracket. A first lead screw is provided between the two sliding rods. One end of the first lead screw is rotatably connected to the left mounting bracket, and the other end passes through the L-shaped fixing plate and is rotatably connected to the L-shaped fixing plate. A first rotating handle is provided at the end of the first lead screw. A vertical second mounting plate is provided on both sliding rods. The second mounting plate slides on the sliding rods through the cooperation of the lead screw nut and the first lead screw. The motor and the brush roller are spaced apart along the height of the second mounting plate and connected by a synchronous belt. The brush roller is located in the lower section away from the rotating handle.

[0009] Furthermore, two first guide rails are spaced apart along the width direction on the end face of the left mounting bracket. The first guide rails extend along the length direction of the left mounting bracket and the length of the first guide rail is greater than the length of the plate. A second lead screw is provided between the two first guide rails. The first mounting plate is slidably mounted on the first guide rail. The lower end face of the first mounting plate is provided with a sliding slider corresponding to the first guide rail, and a threaded lead screw nut is provided corresponding to the second lead screw. One end of the second lead screw is rotatably connected to the left mounting bracket, and the other end passes through the left mounting bracket and is connected to the output shaft of the asynchronous motor.

[0010] Furthermore, the right mounting bracket is provided with a plurality of second guide rails spaced apart along its length direction. The second guide rails all extend along the width direction of the right mounting bracket and are provided with the receiving plate. A second lead screw is provided between the plurality of second guide rails. One end of the second lead screw is rotatably connected to the right mounting bracket, and the other end passes through the right mounting bracket and is connected to a second rotating handle.

[0011] Furthermore, two symmetrically arranged mounting plates are provided on the end face of the receiving plate along its width direction. The mounting plates extend along the length direction of the receiving plate, and there is a gap between the two mounting plates. The width of the gap is adapted to the width of a hand to facilitate the handling of the material. The length of the mounting plate is less than the length of the receiving plate. The material is placed on the upper surface of the two mounting plates together. On the end face of the mounting plate, L-shaped limiting blocks are symmetrically arranged along its length direction. The four limiting blocks limit the four corners of the material. Elbow clamps are symmetrically arranged on the receiving plates at both ends of the material along its length direction.

[0012] Furthermore, the end face of the receiving plate is provided with convex grooves spaced apart along its width direction, the upper end face of the groove is open, the groove extends along the length direction of the receiving plate and is open at both ends; the lower end face of the toggle clamp is provided with a connecting block, and the lower end face of the connecting block away from the toggle clamp is provided with a convex protrusion adapted to the convex groove; the toggle clamp is disposed in the groove in the gap.

[0013] Furthermore, the inner ring wall of the connecting cylinder near the roller core is provided with internal threads, and the outer ring wall of the roller core is provided with mounting platforms corresponding to the connecting cylinder. The ring wall of the mounting platforms is provided with external threads, and the connecting cylinder is screwed and fixed to the roller core.

[0014] The beneficial effects of this utility model are as follows: 1. The brush roller of this utility model adopts the core structure of "segmented bristle layer + spring telescopic brush head". On the one hand, the three-segment bristle layer can remove floating slag and burrs on the board surface, meeting the basic grinding needs of the board surface; on the other hand, the telescopic brush head can adaptively extend and retract according to the contour of the waist-shaped hole wall under the action of spring force, and can penetrate into the dead corners that are difficult to reach by traditional devices, such as the right angle intersection between the hole wall and the board surface and the transition area of ​​the arc end, effectively contacting and removing the root of the burrs.

[0015] 2. This utility model has multi-dimensional adaptability and adjustment capabilities. The left mounting frame drives the second mounting plate through the first lead screw to move the brush roller up and down, which can adjust the distance between the brush roller and the board. The right mounting frame drives the receiving plate to move horizontally along the width direction through the second lead screw, which can make the two rows of waist-shaped holes on the board align with the telescopic brush head of the brush roller.

[0016] 3. This utility model uses an asynchronous motor to drive the brush roller to reciprocate along the length of the board, forming a double grinding trajectory of "forward grinding + reverse grinding". This not only enhances the removal effect of dead corner burrs in the waist-shaped hole and avoids omissions in single grinding, but also ensures uniform grinding of the entire length of the board surface through the continuous rotation of the brush roller. It takes into account both the flatness of the surface grinding and the thoroughness of the grinding inside the hole, thus improving the overall grinding quality. Attached Figure Description

[0017] Figure 1 This is a left view of the present invention (with a sheet metal).

[0018] Figure 2 This is a right view of the present invention (with a sheet metal).

[0019] Figure 3 This is a schematic diagram of the left mounting bracket structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the assembly of the motor and brush roller in this utility model.

[0021] Figure 5 This is a schematic diagram showing the disassembly of the roller brush of this utility model.

[0022] Figure 6 This is a schematic diagram of the right mounting bracket structure of this utility model (without sheet metal).

[0023] Figure 7 This utility model Figure 6 Enlarged diagram of point A in the middle.

[0024] Figure 8 This is a disassembly diagram of the right mounting bracket of this utility model.

[0025] Reference numerals in the attached drawings: 1. Left mounting bracket; 1-1. L-shaped fixing plate; 1-2. First rotating handle; 1-3. First guide rail; 1-4. First mounting plate; 2. Right mounting bracket; 2-1. Second guide rail; 2-2. Second rotating handle; 2-3. Placement plate; 2-3.1. Limiting block; 2-4. Elbow clamp; 3. Brush roller; 3-1. Roller core; 3-2. Bristle layer; 3-3. Telescopic brush head; 3-3.1. Connecting cylinder; 3-3.2. Brush head; 3-3.3. Spring; 4. Receiving plate; 4-1. Groove; 5. Plate; 6. Motor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] like Figures 1 to 8As shown, a grinding device for laser processing of sheet metal includes mounting frames 1 and 2. The mounting frames 1 and 2 include a left mounting frame 1 and a right mounting frame 2, which are connected by a connecting rod. A horizontally arranged brush roller 3 is rotatably mounted on the left mounting frame 1 and can move along the length direction of the left mounting frame 1. A receiving plate 4 is provided on the right mounting frame 2, and a sheet metal 5 with oblong holes is placed on the receiving plate 4. Two rows of elongated oblong holes are arranged at intervals along the width direction of the sheet metal 5. Each row of oblong holes includes multiple oblong holes arranged at intervals along the length direction of the sheet metal 5. The sheet metal 5 extends along the moving direction of the brush roller 3, and the brush roller 3 is provided above the sheet metal 5. The brush roller 3 includes a roller core 3-1, and three sections of flocked layers 3-2 are arranged at intervals along the width direction of the sheet metal 5 on the outer periphery of the roller core 3-1. An installation is formed between two adjacent sections of flocked layers 3-2. The two installation gaps are each equipped with telescopic brush heads 3-3, which are distributed circumferentially along the roller core 3-1. The ends of the telescopic brush heads 3-3 away from the roller core 3-1 protrude from the outer surface of the tufted layer 3-2, and their diameter is smaller than the short side dimension of the waist-shaped hole. The position of the telescopic brush head 3-3 in a single installation gap corresponds to a row of waist-shaped holes. Each telescopic brush head 3-3 includes a connecting cylinder 3-3.1 and a brush head 3-3.2. The brush head 3-3.2 slides through the connecting cylinder 3-3.1. A spring 3-3.3 is provided inside the connecting cylinder 3-3.1. One end of the spring 3-3.3 abuts against the outer ring wall of the roller core 3-1, and the other end abuts against the end of the brush head 3-3.2 near the roller core 3-1. The mounting frames 1 and 2 are equipped with motors 6 that move synchronously with the brush roller 3. The output shaft of the motor 6 is connected to the brush roller 3 for transmission.

[0028] Furthermore, a horizontally arranged first mounting plate 1-4 is slidably provided on the end face of the left mounting bracket 1. Two vertical sliding rods are spaced apart on the first mounting plate 1-4. The ends of the sliding rods away from the left mounting bracket 1 are connected by the horizontal section of the L-shaped fixing plate 1-1. The vertical section of the L-shaped fixing plate 1-1 is fixedly connected to the left mounting bracket 1. A first lead screw is provided between the two sliding rods. One end of the first lead screw is rotatably connected to the left mounting bracket 1, and the other end passes through the L-shaped fixing plate 1-1 and is rotatably connected to the L-shaped fixing plate 1-1. A first rotating handle 1-2 is provided at the end. A vertical second mounting plate is provided on both sliding rods. The second mounting plate slides on the sliding rods through the cooperation of the lead screw nut and the first lead screw. A motor 6 and a brush roller 3 connected by a synchronous belt are spaced apart along the height of the second mounting plate. The brush roller 3 is located in the lower section away from the first rotating handle 1-2.

[0029] Furthermore, two first guide rails 1-3 are spaced apart along the width direction on the end face of the left mounting bracket 1. The first guide rails 1-3 extend along the length direction of the left mounting bracket 1 and the length of the first guide rails 1-3 is greater than the length of the plate 5. A second lead screw is provided between the two first guide rails 1-3. A first mounting plate 1-4 is slidably mounted on the first guide rails 1-3. A sliding slider is provided on the lower end face of the first mounting plate 1-4 corresponding to the first guide rails 1-3. A threaded lead screw nut is provided on the second lead screw. One end of the second lead screw is rotatably connected to the left mounting bracket 1, and the other end passes through the left mounting bracket 1 and is connected to the output shaft of the asynchronous motor.

[0030] Furthermore, the right mounting bracket 2 is provided with a plurality of second guide rails 2-1 at intervals along its length direction. The second guide rails 2-1 all extend along the width direction of the right mounting bracket 2 and are provided with a support plate 4. A second lead screw is provided between the plurality of second guide rails 2-1. One end of the second lead screw is rotatably connected to the right mounting bracket 2, and the other end passes through the right mounting bracket 2 and is connected to a second rotating handle 2-2.

[0031] Furthermore, two symmetrically arranged mounting plates 2-3 are provided on the end face of the receiving plate 4 along its width direction. The mounting plates 2-3 extend along the length direction of the receiving plate 4, and there is a gap between the two mounting plates 2-3. The width of the gap is adapted to the width of the hand to facilitate the handling of the plate 5. The length of the mounting plate 2-3 is less than the length of the receiving plate 4. The plate 5 is placed on the upper end face of the two mounting plates 2-3. On the end face of the mounting plate 2-3, L-shaped limiting blocks 2-3.1 are symmetrically arranged along its length direction. The four limiting blocks 2-3.1 limit the four corners of the plate 5. Elbow clamps 2-4 are symmetrically arranged on the receiving plates 4 at both ends of the plate 5 along its length direction.

[0032] Furthermore, the end face of the receiving plate 4 is provided with convex grooves 4-1 spaced along its width direction. The upper end face of the grooves 4-1 is open, and the grooves 4-1 extend along the length direction of the receiving plate 4 and are open at both ends. The lower end face of the toggle clamp 2-4 is provided with a connecting block. The lower end face of the connecting block away from the toggle clamp 2-4 is provided with a convex protrusion that matches the convex grooves 4-1. The toggle clamp 2-4 is located in the grooves 4-1 in the gap.

[0033] Furthermore, the inner ring wall of the connecting cylinder 3-3.1 near the end of the roller core 3-1 is provided with internal threads, and the outer ring wall of the roller core 3-1 is provided with mounting platforms corresponding to the connecting cylinder 3-3.1. The ring wall of the mounting platforms is provided with external threads, and the connecting cylinder 3-3.1 is screwed and fixed to the roller core 3-1.

[0034] Working principle of this utility model: 1. Plate Placement and Fixing: Place the metal plate 5 with two rows of oblong holes to be ground on the receiving plate 4 of the right mounting bracket 2, so that the edge of the plate 5 is in contact with the inner wall of the mounting plate 2-3. At the same time, the four L-shaped limiting blocks 2-3.1 on the mounting plate 2-3 are used to initially position the four corners of the plate 5, restricting the lateral and longitudinal movement of the plate 5 during the grinding process. Slide the elbow clamp 2-4 in the gap of the receiving plate 4 (by sliding the convex protrusion at the lower end of the connecting block with the convex groove 4-1 of the receiving plate 4), so that the pressure head of the elbow clamp 2-4 is aligned with the two ends of the length direction of the plate 5. Press the handle of the elbow clamp 2-4, and the self-locking characteristic of the elbow mechanism will tightly press the plate 5 onto the mounting plate 2-3 to prevent the plate 5 from shifting due to vibration during grinding.

[0035] 2. Adjustment of brush roller and board position: ① Adjustment of brush roller height: Rotate the first rotary handle 1-2 on the left mounting frame 1 to drive the first lead screw to rotate; under the threaded engagement of the first lead screw and the second mounting plate and the guidance of the two sliding rods, the second mounting plate rises and falls vertically, synchronously driving the motor 6 and brush roller 3 on it to move up and down: until the lower outer surface of the brush roller 3 is in contact with the plane of the board 5; ② Adjustment of board position: Rotate the second rotary handle 2-2 on the right mounting frame 2 to drive the second lead screw to rotate; under the engagement of the second lead screw and the lead screw nut of the receiving plate 4 and the guidance of the second guide rail 2-1, the receiving plate 4 moves horizontally along the width direction of the right mounting frame 2 until the two rows of waist-shaped holes of the board 5 are aligned with the telescopic brush head 3-3 of the brush roller 3 on the left mounting frame 1.

[0036] 3. Start Grinding: Start the motor 6, which is connected to the brush roller 3 via a synchronous belt. The output shaft of the motor 6 drives the brush roller 3 to rotate at high speed around the axis of the roller core 3-1 via the synchronous belt. At this time, the three-section bristle layer 3-2 of the brush roller 3 and the telescopic brush head 3-3 in the two installation gaps rotate synchronously with the roller core 3-1. During the rotation, the flexible bristles of the three-section bristle layer 3-2 are in close contact with the plane of the board 5. Through the friction of the bristles, the floating slag and flat burrs on the surface of the board 5 after laser processing are removed. The brush head 3-3.2 is made of flexible material and is pushed outward. Because the diameter of the brush head 3-3.2 is smaller than the short side size of the oblong hole, it can be smoothly inserted into the oblong hole. During the rotation, the brush head 3-3.2 not only adheres to the hole wall but also rubs against it. The brush head can also conform to the right-angle intersection and the root of the arc end of the waist-shaped hole under the adaptive action of the spring 3-3.3, cutting and removing burrs in dead corners that are difficult to reach by traditional devices. When the brush head 3-3.2 rotates away from the waist-shaped hole area with the roller core 3-1, the plate 5 generates reverse pressure on the brush head 3-3.2, compressing the spring 3-3.3 to retract the brush head 3-3.2 into the installation gap. Because the brush head 3-3.2 is made of flexible material and is elastically constrained by the spring 3-3.3 in the connecting cylinder 3-3.1, when it passes through the waist-shaped hole and contacts the mounting plate 2-3, it will adapt to slight deformation and retract naturally with the compression of the spring 3-3.3, without scratching the surface of the mounting plate 2-3 or pushing the mounting plate 2-3 to move.

[0037] 4. Reciprocating Reinforcement: While the brush roller 3 continues to rotate and polish, the asynchronous motor continuously drives the second lead screw to rotate, causing the first mounting plate 1-4 and the brush roller 3 to move at a constant speed along the length of the left mounting frame 1. After the brush roller 3 moves to the end of the plate 5 and completes the first forward polishing, the asynchronous motor flips and drives the brush roller 3 to move in the opposite direction to perform a second reverse polishing on the plate 5 (to enhance the removal effect of dead corner burrs in the holes and avoid omissions in a single polishing). During this process, the three-section bristle layer 3-2 of the brush roller 3 continuously polishes the entire length of the plate 5 surface, while the telescopic brush head 3-3 in the two mounting gaps is fed with the brush roller 3 and sequentially performs a "deep-polish-retract" cyclic treatment on each hole of the two rows of waist-shaped holes in the plate 5.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A grinding device for laser processing of sheet metal, comprising a mounting frame, the mounting frame including a left mounting frame and a right mounting frame, characterized in that, The left mounting bracket is rotatably equipped with a horizontally arranged brush roller, which can move along the length of the left mounting bracket. The right mounting bracket is equipped with a receiving plate, on which a plate with an oblong hole is placed. The plate extends along the moving direction of the brush roller, and the brush roller is located above the plate. The brush roller includes a roller core, and multiple tufted layers are spaced apart along the width direction of the plate on the outer periphery of the roller core. An installation gap is formed between two adjacent tufted layers. Telescopic brush heads are provided in each installation gap. The telescopic brush heads are spaced apart along the circumference of the roller core. The end of the telescopic brush head away from the roller core protrudes from the outer surface of the tufted layer and its diameter is smaller than the short side dimension of the waist-shaped hole. Each telescopic brush head includes a connecting cylinder and a brush head. The brush head slides through the connecting cylinder. A spring is provided inside the connecting cylinder. One end of the spring abuts against the outer ring wall of the roller core, and the other end abuts against the end of the brush head near the roller core. The mounting frame is equipped with a motor that moves synchronously with the brush roller, and the output shaft of the motor is connected to the brush roller drive.

2. The grinding device for laser processing of sheet metal according to claim 1, characterized in that, A first mounting plate arranged horizontally is slidably provided on the end face of the left mounting bracket. Two vertical sliding rods are spaced apart on the first mounting plate. The ends of the sliding rods away from the left mounting bracket are connected by the horizontal section of an L-shaped fixing plate. The vertical section of the L-shaped fixing plate is fixedly connected to the left mounting bracket. A first lead screw is provided between the two sliding rods. One end of the first lead screw is rotatably connected to the left mounting bracket, and the other end passes through the L-shaped fixing plate and is rotatably connected to the L-shaped fixing plate. A first rotating handle is provided at the end. Both sliding rods are provided with a vertical second mounting plate, which slides on the sliding rods through the cooperation of a screw nut and a first screw. The second mounting plate is provided with the motor and brush roller connected by a timing belt at intervals along its height, with the brush roller located in the lower section away from the rotating handle.

3. The grinding device for laser processing of sheet metal according to claim 2, characterized in that, Two first guide rails are spaced apart along the width direction on the end face of the left mounting bracket. The first guide rails extend along the length direction of the left mounting bracket and the length of the first guide rails is greater than the length of the plate. A second lead screw is provided between the two first guide rails. The first mounting plate is slidably mounted on the first guide rails. The lower end of the first mounting plate is provided with a sliding slider corresponding to the first guide rail, and a threaded screw nut is provided corresponding to the second screw. One end of the second screw is rotatably connected to the left mounting bracket, and the other end passes through the left mounting bracket and is connected to the output shaft of the asynchronous motor.

4. The grinding device for laser processing of sheet metal according to claim 1, characterized in that, The right mounting bracket is provided with a plurality of second guide rails spaced apart along its length direction. The second guide rails all extend along the width direction of the right mounting bracket and are provided with the receiving plate. A second lead screw is provided between the plurality of second guide rails. One end of the second lead screw is rotatably connected to the right mounting bracket, and the other end passes through the right mounting bracket and is connected to a second rotating handle.

5. The grinding device for laser processing of sheet metal according to claim 1, characterized in that, Two symmetrically arranged mounting plates are provided on the end face of the receiving plate along its width direction. The mounting plates extend along the length direction of the receiving plate and there is a gap between the two mounting plates. The length of the mounting plates is less than the length of the receiving plate. The material is placed on the upper surface of the two mounting plates together. On the end face of the mounting plate, L-shaped limiting blocks are symmetrically arranged along its length, and the four limiting blocks limit the four corners of the plate.

6. The grinding apparatus for laser processing of sheet metal according to claim 1 or 5, characterized in that, The plate has symmetrical elbow clamps on the receiving plates at both ends along its length.

7. The grinding apparatus for laser processing of sheet metal according to claim 6, characterized in that, The receiving plate has a plurality of convex grooves spaced apart along its width direction on its end face, and the grooves extend along the length direction of the receiving plate. The lower end face of the toggle clamp is provided with a connecting block, and the lower end face of the connecting block away from the toggle clamp is provided with a convex protrusion that matches the convex groove. The elbow joint is clamped in the groove of the gap.

8. The grinding device for laser processing of sheet metal according to claim 1, characterized in that, The inner ring wall of the connecting cylinder near the roller core is provided with internal threads, and the outer ring wall of the roller core is provided with mounting platforms corresponding to the connecting cylinder. The ring wall of the mounting platforms is provided with external threads, and the connecting cylinder is screwed and fixed to the roller core.

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