Laser cutting and engraving device and method of using the same

Abstract

The present invention relates to the technical field of laser cutting and engraving, and discloses a laser cutting and engraving device and a method of using the same, including a conveyor belt, and also including a material unloading component, the material unloading component is arranged on the top of the conveyor belt, and the material unloading component is used to unload the material to be engraved; a first cleaning component, there are multiple first cleaning components, and the multiple first cleaning components are evenly arranged on the conveyor belt, and the first cleaning component is used to clean the side and bottom of the material; there are two limit plates, and the two limit plates are respectively fixedly installed on the opposite sides of the conveyor belt, and the two limit plates are provided with folding grooves, and both ends of each folding groove pass through the corresponding limit plates. The present invention can make the material to be engraved unloaded in sequence and continuously, and can fully clean the bottom and sides of the material before unloading, avoiding the unevenness of the material when placing and clamping, causing the problem of subsequent engraving quality defects, thereby improving the use effect of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting and engraving, and in particular to a laser cutting and engraving device and a use method thereof. Background Art

[0002] Laser cutting and engraving device is a device that uses a high-energy-density laser beam to cut and engrave materials. It combines laser technology, computer control technology, and mechanical engineering technology. It is efficient, precise, and flexible, and is widely used in various industrial and artistic fields.

[0003] For example, a plate laser engraving device disclosed in the patent with announcement number CN220943712U can engrave objects, but it does not have the function of completely cleaning the surface of the material before engraving, which may cause the material to be uneven when placed and have many burrs after laser engraving, thereby reducing the use effect. Therefore, it is urgent to design a laser cutting and engraving device. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a laser cutting and engraving device and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A laser cutting and engraving device, comprising a conveyor belt, and further comprising:

[0007] A laser cutting and engraving component is arranged on the conveyor belt and is used to engrave the material;

[0008] A material unloading component is arranged on the top of the conveyor belt and is used for unloading the material to be engraved;

[0009] A first cleaning component, wherein there are a plurality of first cleaning components, and the plurality of first cleaning components are evenly arranged on the conveyor belt, and the first cleaning component is used to clean the side and bottom of the material;

[0010] There are two limit plates, which are fixedly installed on the opposite sides of the conveyor belt. Both limit plates are provided with folding grooves, and both ends of each folding groove pass through the corresponding limit plate;

[0011] A second cleaning component, the second cleaning component is arranged on the conveyor belt, and the second cleaning component is used to clean the top of the material;

[0012] The placing and fixing component is arranged on the conveyor belt and is used for fixing the material after receiving it.

[0013] As a further technical solution of the present invention, the unloading component includes: a unloading hopper, which is vertically arranged above the conveyor belt, and mounting plates are fixedly installed on the opposite sides of the unloading hopper, and the ends of the two mounting plates are fixedly installed on the top of the conveyor belt, and a through horizontal groove is opened on the side of the unloading hopper, and the top and bottom of the unloading hopper are both open, and a through opening groove is opened at the bottom of the side of the unloading hopper, and two symmetrically arranged blocks are fixed at the bottom of the inner wall of the unloading hopper.

[0014] As a further technical solution of the present invention, the placement and fixing component includes: a material plate, a plurality of material plates, the plurality of material plates are evenly arranged on the surface of the conveyor belt, a connecting column is fixed on the side of each material plate close to the conveyor belt, and the end of each connecting column away from the material plate is fixedly installed on the surface of the conveyor belt, and baffles are horizontally fixedly installed above the opposite sides of the conveyor belt, and a first groove is opened on the top of each baffle.

[0015] As a further technical solution of the present invention, two symmetrically arranged L-shaped clamps are provided at the diagonals of the top of each material plate, and two symmetrically arranged third spring rods are fixed to the end of the surface of each material plate, and the telescopic ends of the corresponding third spring rods are fixedly installed on the outer sides of the corresponding L-shaped clamps, and push blocks are fixedly installed on the tops of the corresponding L-shaped clamps.

[0016] As a further technical solution of the present invention, the first cleaning component includes: a first spring rod, the fixed end of the first spring rod is fixedly installed on the top of the conveyor belt, the first spring rod is located between two adjacent material plates, the fixed end and the telescopic end of the first spring rod are connected by a spline sliding connection, a symmetrically arranged cross bar is horizontally fixed to the top of the telescopic end surface of the first spring rod, a U-shaped plate is fixedly installed on the top of the telescopic end of the first spring rod, a second motor is installed on the top of the horizontal side of the U-shaped plate, a first brush disc is installed on the output end of the second motor, a fixed disc is arranged below the first brush disc, the tops of the two vertical sides of the U-shaped plate are fixedly installed on the bottom of the fixed disc, and when the cross bar enters the folding groove, it slides between the cross bar and the folding groove.

[0017] As a further technical solution of the present invention, two arc-shaped plates evenly distributed in a ring shape are fixed on the top of the fixed disk, a second groove is opened on the arc-shaped plate, and two symmetrically arranged friction columns are also slidably placed on the top of the fixed disk. The top ends of the two friction columns pass through the first brush disk, and the top ends of the friction columns are friction surfaces.

[0018] As a further technical solution of the present invention, two arc-shaped strips evenly distributed in a ring shape are fixed on the surface of the first brush plate, the two arc-shaped strips are not connected, and two moving blocks are provided at the head and tail ends of the two arc-shaped strips, a third groove is provided at the top of each moving block, and a fourth groove is provided at the bottom of each moving block, a sponge is installed on the inner side of each moving block, a sliding groove is provided at the corresponding end of each arc-shaped strip, a sliding block is slidably provided at the end of each sliding groove, a fourth spring is installed inside the sliding groove, and the other end of each fourth spring is fixedly installed on the corresponding side of the sliding block, and two symmetrically arranged second spring rods are fixed on the top of the fixed plate, and the telescopic ends of the two second spring rods are respectively fixedly installed on the outside of the two moving blocks.

[0019] As a further technical solution of the present invention, the laser cutting and engraving assembly includes: a three-axis motion platform, the three-axis motion platform is installed on the conveyor belt, and a laser head is vertically installed at the output end of the three-axis motion platform.

[0020] As a further technical solution of the present invention, the second cleaning component includes: a U-shaped frame, the U-shaped frame is fixedly installed on the top of the conveyor belt, a first motor is installed on the top of the horizontal side of the U-shaped frame, a second brush plate is horizontally arranged below the horizontal side of the U-shaped frame, and the output shaft of the first motor is installed at the top center of the second brush plate.

[0021] A method for using a laser cutting and engraving device comprises the following steps:

[0022] S1: First, place the material to be engraved inside the lower hopper, then the lowest layer of material will be located at the transverse groove, start the conveyor belt and drive the first spring rod and the material plate to move together. It should be noted that the conveyor belt is an intermittent rotating conveyor belt. When the cross bar enters the folding groove, the telescopic end of the first spring rod can move downward. At this time, the first spring rod generates elastic force until the cross bar moves out of the folding groove. At this time, the first spring rod moves to the bottom of the lower hopper, and the elastic force generated by the first spring rod causes the first brush plate and the fixed plate and other connecting parts to move upward together, so as to achieve contact between the first brush plate and the material located at the transverse groove;

[0023] S2: Then start the second motor to drive the first brush plate to rotate. The rotation of the first brush plate drives the arc bar and the friction column to rotate. When the friction column contacts the groove on the arc plate, the friction column will move upward and abut against the bottom of the material. At this time, the rotation of the friction column will drive the material to rotate. When the friction column and the arc plate are separated, the friction column will move downward again to achieve the cleaning of the part blocked by the block. In addition, the rotation of the arc bar will contact the fourth groove on the moving block, further moving the moving block upward, and the rotation of the arc bar will also drive the fourth spring to move. Due to the hysteresis characteristic of the spring, The end of the slider will slide out of the chute. When the moving block moves upwards out of between the two arc-shaped bars, the slider will be located between the two arc-shaped bars to block the moving block from resetting. The upward movement of the moving block will limit the material located at the transverse groove, ensuring that the material will not move out of the transverse groove during cleaning. In addition, the side of the material can be wiped with a sponge to achieve stable cleaning of the bottom and side of the material. After the material is cleaned, the second motor stops working, and the tension generated by the fourth spring causes the slider to enter the chute, and the tension generated by the second spring rod causes the moving block to reset and no longer be located at the transverse groove.

[0024] S3: Then as the conveyor belt continues to work, the material plate will move to a position adjacent to the lower hopper, and the push block will enter the transverse groove. The further moving push block will push the material out of the transverse groove and drop it onto the material plate. Then the L-shaped clamp will contact the first groove on the baffle, so that the two L-shaped clamps will move to clamp the material. When the clamped material moves to the bottom of the second brush plate, the first motor is started to drive the second brush plate to rotate to clean the top of the material, further realizing comprehensive cleaning of the material and reducing burrs during laser cutting and engraving. Finally, as the conveyor belt rotates, the fixed material will move to the bottom of the laser head, and the three-axis motion platform will drive the laser head to engrave the material. The engraved material will separate the L-shaped clamp and the baffle as the conveyor belt rotates, and the pulling force generated by the third spring rod will keep the L-shaped clamp and the material away, completing the unloading of the engraved object.

[0025] The beneficial effects of the present invention are:

[0026] Firstly, the present invention can discharge the materials to be engraved in sequence and continuously through the arrangement of the first cleaning component and the material discharge component, and can fully clean the bottom and sides of the materials before discharge, thereby avoiding the problem of unevenness of the materials during placement and clamping, which causes subsequent engraving quality defects, thereby improving the use effect of the device;

[0027] Secondly, the present invention, through the arrangement of a laser cutting component, a material unloading component, a second cleaning component and a placement and fixing component, can clean the top of the material, and can automatically clamp and fix the material. It can also automatically unload the material after the engraving is completed, so as to realize continuous conveying and engraving of the material, thereby improving the engraving efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a laser cutting and engraving device proposed by the present invention;

[0029] Figure 2 This is a rear view structural schematic diagram of a laser cutting and engraving device proposed by the present invention;

[0030] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0031] Figure 4 This is a schematic diagram of the structure of a laser cutting and engraving device proposed by the present invention from a bottom view;

[0032] Figure 5 for Figure 4 A magnified schematic diagram of part B;

[0033] Figure 6 This is a schematic diagram of the structure of a laser cutting and engraving device proposed by the present invention after removing the hopper, U-shaped frame and three-axis motion platform;

[0034] Figure 7 for Figure 6 A magnified schematic diagram of part C;

[0035] Figure 8 A schematic diagram of a material plate and its connection structure of a laser cutting and engraving device proposed by the present invention;

[0036] Fig. 9 This is a schematic structural diagram of a laser cutting and engraving device proposed by the present invention after the first brush plate, the fixing plate, the U-shaped plate and the first spring rod are separated;

[0037] Fig.10 This is a schematic diagram of the cross-sectional structure of an arc-shaped strip of a laser cutting and engraving device proposed by the present invention.

[0038] In the figure: 1. conveyor belt; 2. three-axis motion platform; 3. laser head; 4. baffle; 5. U-shaped frame; 6. first motor; 7. lower hopper; 8. limit plate; 9. first brush plate; 10. folding groove; 11. first spring rod; 12. transverse groove; 13. material plate; 14. opening groove; 15. block; 16. second brush plate; 17. transverse rod; 18. arc strip; 19. moving block; 20. second spring rod; 21. friction column; 22. L-shaped clamp; 23. push block; 24. third spring rod; 25. U-shaped plate; 26. second motor; 27. fixed plate; 28. arc plate; 29. ​​sponge; 30. slide groove; 31. slider; 32. fourth spring. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Please see attached Figure 1 -Attached Fig.10 , a laser cutting and engraving device, comprising a conveyor belt 1, and also comprising: a laser cutting and engraving component, a material discharge component, a first cleaning component, a limiting plate 8, a second cleaning component and a placement and fixing component, the laser cutting and engraving component is arranged on the conveyor belt 1, the laser cutting and engraving component is used to engrave the material, the material discharge component is arranged on the top of the conveyor belt 1, the material discharge component is used to discharge the material to be engraved, there are multiple first cleaning components, multiple first cleaning components are evenly arranged on the conveyor belt 1, the first cleaning component is used to clean the side and bottom of the material, there are two limiting plates 8, the two limiting plates 8 are respectively fixedly installed on the opposite sides of the conveyor belt 1, the two limiting plates 8 are provided with folding grooves 10, and both ends of each folding groove 10 pass through the corresponding limiting plate 8, the second cleaning component is arranged on the conveyor belt 1, the second cleaning component is used to clean the top of the material, the placement and fixing component is arranged on the conveyor belt 1, and the placement and fixing component is used to receive and fix the material;

[0042] The above-mentioned method can comprehensively clean the material to be engraved, which not only ensures the flatness of the material after being fixed, but also reduces the generation of burrs during engraving.

[0043] Please see attached Figure 1 -Attached Figure 5In a preferred embodiment, the material discharge assembly includes: a lower hopper 7, the lower hopper 7 is vertically arranged above the conveyor belt 1, the opposite sides of the lower hopper 7 are fixedly installed with mounting plates, the ends of the two mounting plates are fixedly installed on the top of the conveyor belt 1, a through transverse groove 12 is opened on the side of the lower hopper 7, the top and bottom of the lower hopper 7 are open, a through opening groove 14 is opened at the bottom of the side of the lower hopper 7, and two symmetrically arranged stoppers 15 are fixed at the bottom of the inner wall of the lower hopper 7;

[0044] Specifically, the material to be engraved is placed inside the lower hopper 7, and the material at the bottom layer will be located at the transverse groove 12, which is convenient for subsequent cleaning of the material and the discharge of the material by the push block 23.

[0045] Please see attached Figure 4 -Attached Fig.10 In a preferred embodiment, the placement and fixing assembly includes: a material plate 13, a plurality of material plates 13, and the plurality of material plates 13 are evenly arranged on the surface of the conveyor belt 1, and a connecting column is fixed on the side of each material plate 13 close to the conveyor belt 1, and the end of each connecting column away from the material plate 13 is fixedly installed on the surface of the conveyor belt 1, and baffles 4 are horizontally fixedly installed above the opposite sides of the conveyor belt 1, and a first groove is opened on the top of each baffle 4, and two symmetrically arranged L-shaped clamps 22 are provided at the diagonal positions of the top of each material plate 13, and two symmetrically arranged third spring rods 24 are fixed on the end of the surface of each material plate 13, and the telescopic ends of the corresponding third spring rods 24 are fixedly installed on the outer sides of the corresponding L-shaped clamps 22, and the tops of the corresponding L-shaped clamps 22 are fixedly installed with push blocks 23;

[0046] Furthermore, the L-shaped clamping plate 22 will contact the first groove on the baffle 4, so that the two L-shaped clamping plates 22 will move to clamp the material, thereby ensuring stability during engraving.

[0047] Please see attached Figure 1 -Attached Fig.10In a preferred embodiment, the first cleaning component includes: a first spring rod 11, the fixed end of the first spring rod 11 is fixedly installed on the top of the conveyor belt 1, the first spring rod 11 is located between two adjacent material plates 13, the fixed end and the telescopic end of the first spring rod 11 are connected by spline sliding, and a symmetrically arranged cross bar 17 is horizontally fixed to the top of the telescopic end surface of the first spring rod 11, a U-shaped plate 25 is fixedly installed on the top of the telescopic end of the first spring rod 11, a second motor 26 is installed on the top of the horizontal side of the U-shaped plate 25, and a first brush disc 9 is installed on the output end of the second motor 26, and a fixed disc 27 is arranged below the first brush disc 9, and the tops of the two vertical sides of the U-shaped plate 25 are fixedly installed on the bottom of the fixed disc 27, when the cross bar 17 enters the inside of the folding groove 10, the cross bar 17 slides between the folding groove 10, and two annularly evenly distributed arc plates 28 are fixed on the top of the fixed disc 27, and a second groove is opened on the arc plate 28, and the fixed disc Two symmetrically arranged friction columns 21 are also slidably placed on the top of 27, and the top ends of the two friction columns 21 pass through the first brush plate 9. The top ends of the friction columns 21 are friction surfaces. Two circular arc strips 18 are fixed on the surface of the first brush plate 9, and the two arc strips 18 are not connected. Two moving blocks 19 are arranged at the head and tail ends of the two arc strips 18, and a third groove is opened at the top of each moving block 19, and a fourth groove is opened at the bottom of each moving block 19. A sponge 29 is installed on the inner side of each moving block 19, and a slide groove 30 is opened at the corresponding end of each arc strip 18. A slider 31 is slidably arranged at the end of each slide groove 30, and a fourth spring 32 is installed inside the slide groove 30. The other end of each fourth spring 32 is fixedly installed on the side of the corresponding slider 31. Two symmetrically arranged second spring rods 20 are fixed on the top of the fixed plate 27, and the telescopic ends of the two second spring rods 20 are respectively fixedly installed on the outer sides of the two moving blocks 19;

[0048] Preferably, the upward movement of the moving block 19 will limit the material located at the transverse groove 12, ensuring that the material will not move out of the transverse groove 12 during cleaning. In addition, the side of the material can be wiped by the sponge 29 to achieve stable cleaning of the bottom and sides of the material.

[0049] Please see attached Figure 1 -Attached Figure 2 In a preferred embodiment, the laser cutting and engraving assembly includes: a three-axis motion platform 2, the three-axis motion platform 2 is installed on the conveyor belt 1, and a laser head 3 is vertically installed at the output end of the three-axis motion platform 2;

[0050] Specifically, the fixed material will move to the bottom of the laser head 3, and the three-axis motion platform 2 will drive the laser head 3 to engrave the material.

[0051] Please see attached Figure 1 -Attached Figure 6In a preferred embodiment, the second cleaning assembly includes: a U-shaped frame 5, the U-shaped frame 5 is fixedly mounted on the top of the conveyor belt 1, a first motor 6 is mounted on the top of the horizontal side of the U-shaped frame 5, a second brush plate 16 is horizontally arranged below the horizontal side of the U-shaped frame 5, and the output shaft of the first motor 6 is mounted at the top center of the second brush plate 16;

[0052] Furthermore, when the clamped material moves to the bottom of the second brush plate 16, the first motor 6 is started to drive the second brush plate 16 to rotate so as to clean the top of the material.

[0053] Working principle of the present invention:

[0054] First, place the material to be engraved inside the lower hopper 7, then the material at the bottom layer will be located at the transverse groove 12, start the conveyor belt 1 and drive the first spring rod 11 and the material plate 13 to move together. It should be noted that the conveyor belt 1 is an intermittent rotating conveyor belt 1. When the cross bar 17 enters the folding groove 10, the telescopic end of the first spring rod 11 can move downward. At this time, the first spring rod 11 generates elastic force until the cross bar 17 moves out of the folding groove 10. At this time, the first spring rod 11 moves to the bottom of the lower hopper 7, and the elastic force generated by the first spring rod 11 causes the first brush plate 9 and the fixed plate 27 and other connecting parts to move upward together, so as to achieve contact between the first brush plate 9 and the material located at the transverse groove 12;

[0055] Then, the second motor 26 is started to drive the first brush plate 9 to rotate. The rotation of the first brush plate 9 drives the arcuate bar 18 and the friction column 21 to rotate. When the friction column 21 contacts the groove on the arc plate 28, the friction column 21 will move upward and abut against the bottom of the material. At this time, the rotation of the friction column 21 will drive the material to rotate. When the friction column 21 and the arc plate 28 are separated, the friction column 21 will move downward again, so that the part blocked by the block 15 can also be cleaned. In addition, the rotation of the arcuate bar 18 will contact the fourth groove on the moving block 19, which can further move the moving block 19 upward. The rotation of the arcuate bar 18 will also drive the fourth spring 32 to move. Since the spring has the hysteresis characteristic, the slide The end of the block 31 will slide out of the chute 30. When the moving block 19 moves upward and out of between the two arc-shaped bars 18, the slider 31 will be located between the two arc-shaped bars 18 to block the moving block 19 from resetting. The moving block 19 moves upward and limits the material located at the transverse groove 12, ensuring that the material will not move out of the transverse groove 12 during cleaning. In addition, the side of the material can be wiped by the sponge 29 to achieve stable cleaning of the bottom and side of the material. When the material is cleaned, the second motor 26 stops working, and the tension generated by the fourth spring 32 causes the slider 31 to enter the chute 30, and the tension generated by the second spring rod 20 causes the moving block 19 to reset and no longer be located at the transverse groove 12.

[0056] Then, as the conveyor belt 1 continues to work, the material plate 13 will move to a position adjacent to the lower hopper 7, and the push block 23 will enter the transverse groove 12. The further moved push block 23 will push the material out of the transverse groove 12 and drop it onto the material plate 13. Then the L-shaped clamping plate 22 will contact the first groove on the baffle 4, so that the two L-shaped clamping plates 22 will move to clamp the material. When the clamped material moves to the bottom of the second brush plate 16, the first motor 6 is started to drive the second brush plate 16 to rotate to clean the top of the material, thereby further achieving full cleaning of the material. The surface is cleaned to reduce burrs during laser cutting and engraving. Finally, with the rotation of the conveyor belt 1, the fixed material will move to the bottom of the laser head 3, and the three-axis motion platform 2 will drive the laser head 3 to engrave the material. As the conveyor belt 1 rotates, the engraved material will separate the L-shaped clamping plate 22 and the baffle 4, and the tension generated by the third spring rod 24 will separate the L-shaped clamping plate 22 and the material, completing the unloading of the engraved object. In summary, the material can be engraved continuously in batches by reciprocating in sequence, thereby improving the use effect of the equipment.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser cutting and engraving device, comprising a conveyor belt, characterized in that: Also includes: A laser cutting and engraving assembly, wherein the laser cutting and engraving assembly is arranged on the conveyor belt and is used to engrave materials; A material unloading component, which is arranged on the top of the conveyor belt and is used for unloading materials to be engraved; A first cleaning component, wherein there are a plurality of the first cleaning components, and the plurality of the first cleaning components are evenly arranged on the conveyor belt, and the first cleaning component is used to clean the side and bottom of the material; There are two limit plates, which are fixedly mounted on opposite sides of the conveyor belt respectively. Both limit plates are provided with folding grooves, and both ends of each folding groove pass through the corresponding limit plate; A second cleaning component, the second cleaning component is arranged on the conveyor belt, and the second cleaning component is used to clean the top of the material; A placing and fixing component, wherein the placing and fixing component is arranged on the conveyor belt and is used to fix the material after receiving it; The material unloading component comprises: a material unloading hopper, which is vertically arranged above the conveyor belt, and mounting plates are fixedly installed on opposite sides of the material unloading hopper, and the ends of the two mounting plates are fixedly installed on the top of the conveyor belt, and a through transverse groove is provided on the side of the material unloading hopper, and the top and bottom of the material unloading hopper are both open, and a through opening groove is provided on the bottom of the side of the material unloading hopper, and two symmetrically arranged stoppers are fixed on the bottom of the inner wall of the material unloading hopper, and the placement and fixing component comprises: a material plate, and there are multiple material plates, and multiple material plates are evenly arranged on the surface of the conveyor belt, and each of the material plates is fixed with a connecting column on the side close to the conveyor belt, and each of the connecting columns is fixedly installed on the surface of the conveyor belt at the end away from the material plate, and baffles are horizontally fixedly installed above the opposite sides of the conveyor belt, and each of the baffles has a first groove on the top, and two symmetrically arranged L-shaped clamps are provided at the diagonal positions of the top of each material plate, and each of the Two symmetrically arranged third spring rods are fixed to the end portions of the surface of the material plates, and the telescopic ends of the corresponding third spring rods are fixedly installed on the outer sides of the corresponding L-shaped clamps, and the corresponding tops of the L-shaped clamps are fixedly installed with push blocks. The first cleaning assembly comprises: a first spring rod, the fixed end of the first spring rod is fixedly installed on the top of the conveyor belt, the first spring rod is located between two adjacent material plates, the fixed end and the telescopic end of the first spring rod are slidably connected by a spline, a symmetrically arranged cross bar is horizontally fixed to the top of the telescopic end surface of the first spring rod, a U-shaped plate is fixedly installed on the top of the telescopic end of the first spring rod, a second motor is installed on the top of the horizontal side of the U-shaped plate, a first brush disc is installed on the output end of the second motor, a fixed disc is arranged below the first brush disc, and the tops of the two vertical sides of the U-shaped plate are fixedly installed on the bottom of the fixed disc, and when the cross bar enters the folding groove, it slides between the cross bar and the folding groove.

2. A laser cutting and engraving device according to claim 1, characterized in that: Two circularly evenly distributed arc plates are fixed on the top of the fixed plate, a second groove is opened on the arc plate, and two symmetrically arranged friction columns are also slidably placed on the top of the fixed plate. The top ends of the two friction columns pass through the first brush plate, and the top ends of the friction columns are friction surfaces.

3. The laser cutting and engraving device according to claim 2, characterized in that: Two arc-shaped strips evenly distributed in a ring shape are fixed on the surface of the first brush plate, and the two arc-shaped strips are not connected. Two moving blocks are provided at the head and tail ends of the two arc-shaped strips, and a third groove is provided at the top of each moving block, and a fourth groove is provided at the bottom of each moving block. A sponge is installed on the inner side of each moving block, and a slide groove is provided at the corresponding end of each arc-shaped strip, and a slider is slidably provided at the end of each slide groove. A fourth spring is installed inside the slide groove, and the other end of each fourth spring is fixedly installed on the corresponding side of the slider. Two symmetrically arranged second spring rods are fixed on the top of the fixed plate, and the telescopic ends of the two second spring rods are respectively fixedly installed on the outside of the two moving blocks.

4. The laser cutting and engraving device according to claim 3, characterized in that: The laser cutting and engraving assembly comprises: a three-axis motion platform, the three-axis motion platform is installed on the conveyor belt, and a laser head is vertically installed at the output end of the three-axis motion platform.

5. The laser cutting and engraving device according to claim 4, characterized in that: The second cleaning assembly includes: a U-shaped frame, which is fixedly installed on the top of the conveyor belt, a first motor is installed on the top of the horizontal side of the U-shaped frame, a second brush plate is horizontally arranged below the horizontal side of the U-shaped frame, and the output shaft of the first motor is installed at the center of the top of the second brush plate.

6. The method for using the laser cutting and engraving device according to claim 5, characterized in that: The following steps are involved: S1: First, place the material to be engraved inside the lower hopper, then the material at the bottom layer will be located at the transverse groove, start the conveyor belt and drive the first spring rod and the material plate to move together, the conveyor belt is an intermittent rotating conveyor belt, when the cross bar enters the folding groove, the telescopic end of the first spring rod can move downward, then the first spring rod generates elastic force until the cross bar moves out of the folding groove, at which time the first spring rod moves to the bottom of the lower hopper, and the elastic force generated by the first spring rod causes the first brush plate and the fixed plate to move upward together, so that the first brush plate contacts the material located at the transverse groove; S2: Then start the second motor to drive the first brush plate to rotate. The rotation of the first brush plate drives the arc-shaped bar and the friction column to rotate. When the friction column contacts the groove on the arc plate, the friction column will move upward and abut against the bottom of the material. At this time, the rotation of the friction column will drive the material to rotate. When the friction column and the arc plate are separated, the friction column will move downward again to achieve the cleaning of the part blocked by the block. In addition, the rotation of the arc-shaped bar will contact the fourth groove on the moving block, so that the moving block can move upward, and the rotation of the arc-shaped bar will also drive the fourth spring to move. Since the spring has the hysteresis characteristic, the slide The end of the block will slide out of the chute. When the moving block moves upwards out of between the two arc-shaped bars, the slider will be located between the two arc-shaped bars to block the moving block from resetting. The upward movement of the moving block will limit the material located at the transverse groove, ensuring that the material will not move out of the transverse groove during cleaning. In addition, the side of the material can be wiped with a sponge to achieve stable cleaning of the bottom and side of the material. When the material is cleaned, the second motor stops working, and the tension generated by the fourth spring causes the slider to enter the chute, while the tension generated by the second spring rod causes the moving block to reset and no longer be located at the transverse groove. S3: Then as the conveyor belt continues to work, the material plate will move to a position adjacent to the lower hopper, and the push block will enter the transverse groove. The further moving push block will push the material out of the transverse groove and drop it onto the material plate. Then the L-shaped clamp will contact the first groove on the baffle, so that the two L-shaped clamps will move to clamp the material. When the clamped material moves to the bottom of the second brush plate, the first motor is started to drive the second brush plate to rotate to clean the top of the material, thereby achieving comprehensive cleaning of the material and reducing burrs during laser cutting and engraving. Finally, as the conveyor belt rotates, the fixed material will move to the bottom of the laser head, and the three-axis motion platform will drive the laser head to engrave the material. The engraved material will separate the L-shaped clamp and the baffle as the conveyor belt rotates, and the pulling force generated by the third spring rod will keep the L-shaped clamp and the material away, completing the unloading of the engraved object.

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