A metal sorting device based on LIBS laser-induced technology

Abstract

The application relates to the technical field of metal sorting, and particularly discloses a metal sorting equipment based on a LIBS laser induction technology, a second conveying belt in a symmetrical state is rotationally installed at the middle part of the inner side of a mounting frame, a second U-shaped frame is arranged above the second conveying belt, and a grinding belt in a symmetrical state is slidably arranged in the second U-shaped frame; a laser cauterizer is slidably installed from the right side upper end to the inner side of the second U-shaped frame, and the laser cauterizer is located above the adjacent second grinding belt; an integrated structure of paint surface identification, pretreatment and accurate detection is constructed, a spectrometer and a thickness gauge can identify the paint surface state and the thickness of the metal surface in advance, the grinding belt realizes mechanical pretreatment of the paint surface, the laser cauterizer removes the residual paint surface in a targeted manner, and a laser measuring device completes subsequent accurate detection, the problems of incomplete paint surface removal and large spectral signal interference of traditional equipment are effectively solved, the element identification accuracy of the metal with paint is remarkably improved, and the sorting precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of metal sorting technology, and in particular to a metal sorting device based on LIBS laser-induced technology. Background Technology

[0002] In fields such as metal recycling, mineral processing, and coal-associated metal sorting, metal sorting equipment based on LIBS laser-induced technology has become a core piece of equipment in the industry due to its accurate element identification. However, existing equipment still has many technical pain points in practical applications, making it difficult to meet the requirements of efficient and high-precision sorting.

[0003] Metallic materials are often mixed with coal slag and coal powder, and the surface of the materials is easily covered with coal dust, paint, coatings or oxide layers of different thicknesses and types. Traditional equipment lacks a targeted pretreatment mechanism, which cannot identify the condition, thickness and coal dust adhesion of the paint surface in advance, easily causing ineffective waste of laser energy and low processing efficiency. In addition, it often uses a single laser ablation method, which easily leads to problems such as incomplete removal of paint surface and ineffective removal of coal dust, which seriously interferes with the spectral detection signal and greatly reduces the accuracy of element identification.

[0004] The detection and preprocessing stages lack coordinated design. The positions of the spectral detection, thickness measurement, and laser detection modules are mostly fixed, making it difficult to adapt to materials mixed with coal slag and metals of different shapes and sizes. The focusing accuracy is insufficient, which further limits the accuracy of element identification.

[0005] The sorting stage lacks a closed-loop control system encompassing pretreatment, testing, and sorting. There is a lack of effective compensation mechanisms for sorting errors caused by paint residue, coal dust interference, and differences in material morphology, making it difficult to meet the actual needs of high-purity metal sorting in terms of sorting accuracy.

[0006] Meanwhile, the feeding process of existing equipment lacks an effective material dispersion structure, and metal materials mixed with coal slag are prone to overlap and accumulation, which not only increases the difficulty of subsequent detection and sorting, but also easily forms detection blind spots, making it impossible to achieve effective separation of metal materials from coal slag and accurate sorting of metals. Summary of the Invention

[0007] The purpose of this invention is to provide a metal sorting device based on LIBS laser-induced technology to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a metal sorting device based on LIBS laser-induced technology, comprising an installation frame, a material sorting box being provided at the upper left end of the installation frame, a first U-shaped frame being fixedly installed at the upper end of the installation frame near the left side, and a spectrometer and a thickness gauge being slidably installed on the upper surface and inner side of the first U-shaped frame. A second conveyor belt in a symmetrical configuration is rotatably mounted on the inner center of the mounting frame. A second U-shaped frame is provided above the second conveyor belt, and a grinding belt in a symmetrical configuration is slidably arranged inside the second U-shaped frame. A laser ablation device is slidably mounted on the upper right side of the second U-shaped frame, and the laser ablation device is located above the adjacent second grinding belt. A third U-shaped frame is fixedly installed on the upper right side of the mounting frame. A second motor is fixedly installed at the center of the third U-shaped frame. An adjusting slide rod is fixedly installed on the output shaft of the second motor. A laser measuring device is provided at the lower end of the adjusting slide rod and inside the third U-shaped frame.

[0009] Preferably, a first connecting plate is fixedly installed on the lower left side of the mounting frame, a first motor is fixedly installed at the center of the upper left side of the first connecting plate, a first gear is fixedly installed on the front and rear output shafts of the first motor, a first chain is rotatably installed on the circumferential surface of the first gear, a first concave cam is rotatably installed on the other end of the inner side of the first chain, and the first concave cam is rotatably installed on the front and rear left sides of the mounting frame.

[0010] Preferably, a first slide rod is fixedly installed at the front and rear edges of the upper left side of the mounting frame, and a first slider is slidably installed on the upper circumferential surface of the first slide rod. A material sorting box is fixedly installed inside the first slider in the transverse direction. A first spring is fixedly installed at both the upper and lower ends of the first slider, and the end of the first spring away from the first slider is fixedly installed on the first slide rod.

[0011] Preferably, connecting wheels are fixedly installed on both the front and rear sides of the material refining box, and a first concave cam is fitted on the outer circumferential surface of each connecting wheel. A discharge plate is rotatably installed at the lower end of the material refining box. The upper surface of the third U-shaped frame is provided with a sliding groove, and a connecting slide rod is slidably installed inside the sliding groove. The upper end of the connecting slide rod extends into the interior of the adjusting slide rod, and the adjacent end of the adjusting slide rod is fixedly connected to the output shaft of the second motor. A laser measuring device is fixedly installed at the lower end of the connecting slide rod, and a third conveyor belt is rotatably installed below the laser measuring device and inside the mounting frame.

[0012] Preferably, a second gear is fixedly mounted on the outer side of the first gear, a second chain is rotatably mounted on the circumferential surface of the second gear, a third gear is rotatably mounted on the other end of the inner side of the second chain, a first rotating shaft in a symmetrical state is rotatably mounted on the inner left end of the mounting frame, the inner sides of the front and rear of the two third gears and the front and rear ends of the adjacent left first rotating shaft are fixedly connected, and a first conveyor belt is rotatably mounted on the outer circumferential surface of the two first rotating shafts.

[0013] Preferably, a fourth gear is fixedly installed on the outer side of each of the two first concave cams, a third chain is rotatably installed on the circumferential surface of the fourth gear, a second concave cam is rotatably installed on the other end of the inner side of the third chain, the second concave cam is rotatably installed on the upper left side of the mounting frame 1, and a limit frame is fixedly installed on the upper left side of the mounting frame.

[0014] Preferably, a second slide rod is slidably installed at both ends of the limiting frame and inside, and a vibrating screen is fixedly installed on the inner side of the two second slide rods. A third slide rod is slidably installed on both sides of the mounting frame. The inner right side of the third slide rod is in contact with the second slide rod. A second spring is fixedly installed on the outer circumferential surface of the left end of the third slide rod, and the right end of the second spring is fixedly installed on the L-shaped support rod of the mounting frame.

[0015] Preferably, a base plate is fixedly installed at the lower middle part of the mounting frame, a baffle is fixedly installed at the upper end of the base plate and inside the mounting frame, a diversion plate is fixedly installed on the left side of the baffle, a second conveyor belt is rotatably arranged on the inner side of the baffle, a telescopic pump is fixedly installed on the lower inner end face of the baffle, an installation rod is fixedly installed on the telescopic rods of the two telescopic pumps in the transverse direction, auxiliary rings are fixedly installed at equal intervals in the transverse direction on the inner side of the installation rod, and auxiliary rollers are rotatably installed from the inside to the outside of the auxiliary rings.

[0016] Preferably, a second U-shaped frame is fixedly installed at the upper end of the mounting frame, a suction head is slidably installed from the upper surface of the second U-shaped frame to the inside, a fan is fixedly installed on the upper surface of the second U-shaped frame, a conveying pipe is fixedly installed between the upper end of the fan and the upper end of the suction head, a waste bin is fixedly installed on the upper surface of the second U-shaped frame and on both sides of the fan, the fan and the waste bin are connected, and a laser ablation device is fixedly installed from the upper right side of the second U-shaped frame to the inside.

[0017] Preferably, a symmetrical first adjusting rod is rotatably mounted on the inner upper surface of the second U-shaped frame between two adjacent suction heads. An H-shaped double-headed groove rod is rotatably mounted on the lower ends of the two adjacent first adjusting rods. A dual-axis motor is provided on the inner side of the left and right H-shaped double-headed groove rods. Threaded rods are fixedly mounted on the output shafts at both ends of the dual-axis motors. The threaded rods are rotatably connected to the adjacent H-shaped double-headed groove rods. A second adjusting rod is rotatably mounted on the inner side of the lower end of each of the left and right H-shaped double-headed groove rods. A grinding belt is rotatably mounted on the inner side of the lower end of the second adjusting rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This equipment integrates paint and coal dust identification, mechanical pretreatment, laser fine treatment, and precise detection. Using a spectrometer and thickness gauge within the first U-shaped frame, the type, state, thickness, and coal dust adhesion of the paint on the metal surface can be identified in advance, classifying the paint grade and determining the difficulty of coal dust removal. Then, the grinding belt within the second U-shaped frame completes the mechanical pretreatment of the paint and the initial removal of coal dust. A laser ablation device specifically removes any remaining paint and stubborn coal dust after grinding. Finally, a laser measuring device within the third U-shaped frame performs precise detection of metal elements, forming a targeted process for handling complex impurities. This effectively solves the problems of incomplete paint removal and coal dust interference with spectral signals in traditional equipment, significantly improving the accuracy of element identification for painted metals mixed with coal slag, and ensuring metal sorting accuracy from the source of detection.

[0019] 2. This invention relies on the linkage structure of the first gear, the first chain, and the first concave cam driven by the first motor, in conjunction with the elastic support assembly composed of the first slide rod, the first slider, and the first spring, to drive the material separation box to achieve up-and-down reciprocating vibration, completing the initial screening and dispersion of metal materials and coal slag. At the same time, the first motor synchronously drives the first conveyor belt to achieve orderly material transportation. This solves the problem of overlapping and accumulation of metal materials mixed with coal slag from the feeding stage. The combination of vibration separation and orderly transportation enables the initial separation of metal materials and coal slag, and the metal materials are evenly distributed on the conveyor belt. This avoids the formation of detection blind spots due to material accumulation, which leads to insufficient pretreatment. It provides a stable material state for subsequent paint surface coal dust treatment and spectral detection, and greatly improves the overall processing efficiency of the equipment.

[0020] 3. This equipment is suitable for complex working conditions of coal-associated metal separation, greatly improving operational stability and practicality. The dust and slag removal structure of the second U-shaped frame can adsorb paint residue, coal dust, and coal slag generated by grinding and laser ablation in real time, avoiding contamination of optical components. Combined with nitrogen protection, it can also prevent metal oxidation and extend the service life of the equipment. The combination of the telescopic pump and auxiliary roller shaft inside the baffle can be flexibly adjusted according to the size of the metal material mixed with coal slag, ensuring smooth conveying, avoiding coal slag jamming, and widening the material adaptability range. The laser measuring device achieves adaptive position adjustment through the linkage of the motor and the slide bar, which can specifically detect mixed coal slag metal materials of different shapes and positions, solving the problem of poor detection adaptability of traditional equipment and ensuring detection accuracy under complex working conditions.

[0021] 4. This equipment achieves efficient and continuous operation of coal-associated metal separation. The dual second conveyor belts, in conjunction with the grinding belt, can alternately complete grinding and slag removal and material conveying, ensuring continuous operation of the equipment. At the same time, it constructs a complete closed-loop operation of feeding dispersion, paint dust identification, graded treatment, precise detection and separation. The laser ablation stage, combined with plasma spectral monitoring, can identify the characteristic signals of paint surface and coal dust in real time and automatically stop the laser, achieving precise and energy-saving treatment of paint dust. It is suitable for high-purity separation needs in multiple fields such as metal recycling, mineral processing, and coal-associated metal separation. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a front view of the main structure of the present invention; Figure 2 This is a schematic diagram of the mounting frame of the present invention; Figure 3 This is a schematic diagram of the material sorting box and the first conveyor belt of the present invention; Figure 4 This is a schematic diagram of the material refining box of the present invention; Figure 5 This is a schematic diagram of the vibrating screen of the present invention; Figure 6 This is a schematic diagram of the mounting frame, the first U-shaped frame, and the second U-shaped frame of the present invention; Figure 7 This is a schematic diagram of the second conveyor belt and auxiliary roller of the present invention. Figure 8 This is a schematic diagram of the auxiliary roller shaft of the present invention; Figure 9 This is a side view of the second U-shaped frame of the present invention; Figure 10 This is a schematic diagram of the interior of the second U-shaped frame of the present invention; Figure 11 This is a schematic diagram of the grinding belt of the present invention; Figure 12 This is a schematic diagram of the third conveyor belt and the third U-shaped frame of the present invention.

[0024] Explanation of reference numerals in the attached figures: 1. Mounting frame; 2. First connecting plate; 3. First motor; 4. First gear; 5. First chain; 6. First concave cam; 7. First slide bar; 8. Material sorting box; 9. First slider; 10. First spring; 11. Connecting wheel; 12. Discharge plate; 13. Second gear; 14. Second chain; 15. Third gear; 16. First rotating shaft; 17. First conveyor belt; 18. Fourth gear; 19. Third chain; 20. Second concave cam; 21. Limiting frame; 22. Second slide bar; 23. Vibrating screen; 24. Third slide bar; 25. Second spring; 26. First U-shaped frame; 27. Spectrometer and thickness gauge; 28. Baffle; 29. ​​Diverter plate; 30. Second conveyor belt; 31. Base plate; 32. Telescopic pump; 33. Mounting rod; 34. Auxiliary ring; 35. Auxiliary roller; 36. Second U-shaped frame; 37. Suction head; 38. Conveying pipe; 39. Fan; 40. Waste bin; 41. Laser cauterizer; 42. First adjusting rod; 43. H-shaped double-headed grooved rod; 44. Dual-axis motor; 45. Threaded rod; 46. Second adjusting rod; 47. Grinding belt; 48. Third U-shaped frame; 49. Slide groove; 50. Second motor; 51. Adjusting slide bar; 52. Connecting slide bar; 53. Laser measuring instrument; 54. Third conveyor belt. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 12 The present invention provides a technical solution: A metal sorting device based on LIBS laser-induced technology includes a mounting frame 1. A first connecting plate 2 is fixedly mounted on the lower left side of the mounting frame 1. A first motor 3 is fixedly mounted on the upper left side of the first connecting plate 2. The first motor 3 is a dual-shaft motor, and first gears 4 are fixedly mounted on the output shafts at both ends of the first motor 3. First chains 5 are rotatably mounted on the circumference of the first gears 4. The first chains 5 and the first gears 4 are in a meshing state. Figure 4 As shown.

[0027] The first chain 5, after being taut, has its inner side rotated and engaged with the first concave cam 6. The first concave cam 6 is rotatably mounted at both ends of the left side of the mounting frame 1, such as... Figure 4 and Figure 2 As shown.

[0028] Secondly, first sliding rods 7 are fixedly installed at the front and rear edges of the upper left side of the mounting frame 1. The upper half of the first sliding rod 7 has a slightly smaller diameter, and a first slider 9 is slidably installed on its circumference. First springs 10 are fixedly installed on the upper and lower sides of the first slider 9 and between the middle and top of the first sliding rod 7, where the diameter is slightly larger. A material dispersing box 8 is fixedly installed on the inner side of the four first sliders 9 in the horizontal direction. Figure 3 As shown, connecting wheels 11 are fixedly installed on both the front and rear sides of the material mixing box 8. The connecting wheels 11 and the first concave cam 6 are in a close contact state, as shown. Figure 1 As shown, a discharge plate 12 is rotatably installed at the lower end of the material separation box 8 (it should be noted that the discharge plate 12 can only rotate within a small range of angles and will not become vertical).

[0029] Therefore, during use, the first motor 3 is started, and the output shaft of the first motor 3 drives the first gears 4 at both ends to rotate synchronously. The first gears 4 drive the first concave cam 6 to rotate through the meshing first chain 5.

[0030] Because the connecting wheel 11 is in close contact with the first concave cam 6, the protruding part of the first concave cam 6 will push the connecting wheel 11, causing the material sorting box 8 to slide upward along the first slide bar 7 with the first slider 9. At this time, the first spring 10 on the upper side of the first slider 9 is compressed. When the concave part of the first concave cam 6 rotates to the connecting wheel 11, the elastic force of the first spring 10 on the lower side of the first slider 9 is released, pushing the first slider 9 to reset downward, so that the material sorting box 8 generates stable up-and-down reciprocating vibration. Under this vibration, the metal material to be sorted in the material sorting box 8 will be evenly loosened on the discharge plate 12, avoiding material accumulation and clumping, providing a uniformly distributed material state for subsequent LIBS laser-induced spectral detection and precise sorting, ensuring the accuracy and efficiency of the sorting process.

[0031] Next, a second gear 13 is fixedly installed on the outer surface of both the front and rear first gears 4. A second chain 14 is rotated and meshed on the circumference of the second gear 13. The other end of the taut inner side of the second chain 14 rotates and meshes with a third gear 15, as follows. Figure 4 As shown.

[0032] Then, two first rotating shafts 16 with a certain distance between them are rotatably installed on the inner left end of the mounting frame 1. A first conveyor belt 17 is rotatably installed on the outer circumferential surface of the first rotating shafts 16. The front and rear ends of the first rotating shaft 16 on the left side are fixedly connected to the inner side of the third gear 15. Figure 4 As shown.

[0033] Therefore, during use, when the output shaft of the first motor 3 drives the first gear 4 to rotate, the second gears 13 on both the front and rear sides rotate synchronously with the first gear 4. The second gears 13 drive the third gear 15 to rotate through the second chain 14. Since the third gear 15 is fixedly connected to the first rotating shaft 16 on the left, the rotation of the third gear 15 will drive the first rotating shaft 16 on the left to rotate, thereby causing the first conveyor belt 17 between the two first rotating shafts 16 to start circulating. The operation of the first conveyor belt 17 can stably transport the metal material to be sorted to the feeding end of the subsequent device. In conjunction with the up-and-down reciprocating vibration of the material sorting box 8, the continuous feeding and loosening of the material is realized, further ensuring that the subsequent LIBS laser-induced spectral detection stage can continuously obtain uniformly distributed material and improve the overall continuous operation capability of the equipment.

[0034] Additionally, a fourth gear 18 is fixedly mounted on the outer side of the first concave cam 6. A third chain 19 is rotatably mounted and meshes with the circumferential surface of the fourth gear 18. After the third chain 19 is taut, its inner other end rotates and meshes with a second concave cam 20. The second concave cam 20 is rotatably mounted on the upper left side of the mounting frame 1. Figure 4 As shown, an L-shaped support rod is fixedly installed on the upper left side of the mounting frame 1. A third slide rod 24 is slidably installed from the left to the right side of the upper end of the support rod. The left end of the third slide rod 24 has a slightly larger diameter, and a second spring 25 is fixedly installed between it and the left side of the upper end of the support rod. Next, a limiting frame 21 is fixedly installed on the upper left side of the mounting frame 1. Second slide rods 22 are slidably installed from both ends of the limiting frame 21 to its interior. An inclined vibrating screen 23 is fixedly installed on the inner side of both the front and rear second slide rods 22. The outer sides of both the front and rear second slide rods 22 are in contact with the inner right side of the adjacent third slide rod 24. It should be noted that a portion of the right end of the third slide rod 24 is cut off, making the inner right side of the third slide rod 24 inclined. Figure 5 As shown.

[0035] Therefore, during use, when the first concave cam 6 rotates, the fourth gear 18 rotates synchronously. Through the transmission action of the third chain 19, the second concave cam 20 also begins to rotate. During the rotation of the second concave cam 20, its protruding part periodically abuts against the left end of the third slide rod 24, forcing the third slide rod 24 to slide to the right against the elastic force of the second spring 25. Since the inner side of the right end of the third slide rod 24 is inclined, when it slides to the right, it pushes the two second slide rods 22 to move outward, thereby driving the vibrating screen 23 to reciprocate in the front and rear directions within the limiting frame 21. When the protruding part of the second concave cam 20 leaves the left end of the third slide rod 24, the third slide rod 24 slides to the left under the return pull of the second spring 25. After the second slide rod 22 loses its thrust, it will also return to its original position due to the inertia of the vibrating screen 23. This cycle repeats continuously, resulting in a continuous and stable vibration effect from the vibrating screen 23. This allows for efficient screening of the metal materials falling onto it, separating metal particles of different sizes or densities, further optimizing the equipment's sorting performance, and ensuring the accuracy of subsequent metal sorting processes.

[0036] Then, a first U-shaped frame 26 is fixedly installed at the upper end of the mounting frame 1 near the middle. Symmetrical through-holes are opened from the upper surface of the first U-shaped frame 26 to its interior. A spectrometer and a thickness gauge 27 are slidably installed inside the through-holes. Figure 6 As shown, the spectrometer and thickness gauge 27 are located at the right end of the first conveyor belt 17, so the first conveyor belt 17 allows the metal material to pass through the spectrometer and thickness gauge 27 for detection.

[0037] Therefore, during use, when the first conveyor belt 17 transports the pre-screened metal material to the right end, the material will sequentially pass through the detection areas of the spectrometer and thickness gauge 27. The spectrometer and thickness gauge 27 are two devices combined into one unit. The operating principle of the spectrometer and thickness gauge 27 is as follows: the spectral sensor and the laser thickness gauge work synchronously; the infrared sensor identifies the paint surface type; and the laser thickness gauge measures the paint surface thickness, classifying it into four levels: no paint, thin paint, thick paint, and extra-thick paint.

[0038] Then, a base plate 31 is fixedly installed on the lower middle surface of the mounting frame 1. Baffles 28 are fixedly installed on the upper surface of the base plate 31, at the front and rear edges and the middle position of the inner side of the mounting frame 1. A single drainage plate 29 is fixedly installed on the inner left side of each of the front and rear baffles 28, and a V-shaped drainage plate 29 is fixedly installed on the outer left side of the middle baffle 28. Figure 6 and Figure 7As shown, a second conveyor belt 30 is rotatably installed on the inner sides of the front and rear baffles 28 and the middle baffle 28. Then, telescopic pumps 32 are fixedly installed on the inner sides of the front and rear baffles 28 and the inner sides of the middle baffle 28 near their edges. Mounting rods 33 are rotatably installed on the telescopic rods of the two transverse telescopic pumps 32. The left side of the mounting rods 33 is in an outward-expanding state. Furthermore, auxiliary rings 34 are fixedly installed on the inner sides of the mounting rods 33. Auxiliary rollers 35 are rotatably installed on the inner side of the auxiliary rings 34 up to both ends. The lower end of the auxiliary rollers 35 has a ring-shaped recess. Figure 8 As shown, after engaging with the auxiliary ring 34, there will be no metal jamming. Also, the heights of the multiple transverse auxiliary rollers 35 are inconsistent, as shown... Figure 7 As shown, the auxiliary rollers 35 closer to the guide plate 29 are higher, while the auxiliary rollers 35 further away from the guide plate 29 gradually become shorter, mainly to facilitate subsequent grinding operations. Therefore, the tops of the multiple auxiliary rollers 35 further away from the guide plate 29 are flush with the top surface of the mounting rod 33.

[0039] Therefore, during use, when the metal material is introduced by the second conveyor belt 30 and the guide plate 29 or V-shaped guide plate 29, it will first come into contact with the higher auxiliary roller 35. As the height of the auxiliary roller 35 gradually decreases from the side close to the guide plate 29 to the other side, the material will slide smoothly away from the guide plate 29 under its own gravity and the rotation of the auxiliary roller 35.

[0040] At this time, the telescopic pump 32 can flexibly adjust the unfolding angle of the mounting rod 33 according to the size and shape of the metal material, so as to ensure that the auxiliary roller 35 in the auxiliary ring 34 can fit tightly against the material surface and avoid deviation or jamming.

[0041] As the material moves to the area where the height of the auxiliary roller 35 is flush with the top of the mounting rod 33, the material conveying is in the subsequent grinding station.

[0042] During this process, the annular recess at the lower end of the auxiliary roller 35 and the matching design of the auxiliary ring 34 effectively prevent metal materials from getting stuck in the gaps during sliding, ensuring the smoothness of the entire conveying process. At the same time, the rotation of the auxiliary roller 35 can also perform preliminary sorting on the surface of the material, laying a good foundation for subsequent precision grinding operations. After the material has completely left the area of ​​the auxiliary roller 35, the telescopic pump 32 can reset the mounting rod 33, waiting for the introduction of the next batch of material, realizing continuous material conveying and pre-processing operations.

[0043] A second U-shaped frame 36 is fixedly installed near the middle of the upper end of the mounting frame 1. Suction heads 37 are fixedly installed from the upper surface to the interior of the second U-shaped frame 36. A blower 39 is fixedly installed at the top center of the second U-shaped frame 36. Conveying pipes 38 are fixedly installed between the two ends of the blower 39 and the four suction heads 37 on the left and right sides. Furthermore, waste bins 40 are fixedly installed at the front and rear of the upper end of the second U-shaped frame 36. The waste bins 40 and the blower 39 are in a through-flow state. Figure 9 As shown.

[0044] Subsequently, a first adjusting rod 42 is rotatably mounted on the upper inner surface of the second U-shaped frame 36, located inside the two adjacent suction heads 37. Four first adjusting rods 42 form a group. An H-shaped double-headed grooved rod 43 is rotatably mounted on the lower ends of the front and rear first adjusting rods 42. A dual-axis motor 44 is mounted inside the left and right H-shaped double-headed grooved rods 43. Threaded rods 45 are fixedly mounted on the output shafts at both ends of the dual-axis motor 44. It should be noted that the top of the dual-axis motor 44 is fixedly connected to the second U-shaped frame 36 to ensure the operation of the dual-axis motor 44, while the threaded rods 45 and the adjacent H-shaped double-headed grooved rods 43 are rotatably connected by threads. A second adjusting rod 46 is rotatably mounted on the lower end of each of the two H-shaped double-headed groove rods 43 on the left and right sides. A rotating shaft is provided on the inner side of the lower end of the second adjusting rod 46, and a grinding belt 47 is rotatably mounted on the circumferential surface of the two rotating shafts on the left and right sides. It should be noted that a driving device is provided on the inner side of each of the two adjacent second adjusting rods 46 on the left side to drive the rotating shaft to rotate, and the rotation of the rotating shaft drives the grinding belt 47 to rotate. It should be noted that the grinding belt 47 is located inside the two adjacent suction heads 37. Furthermore, a through-hole is opened on the upper right side of the second U-shaped frame 36 near the edge, and a laser ablation device 41 is slidably mounted inside the through-hole. Figure 9 As shown, the laser ablation device 41 is used to destroy the bonding surface between the paint and the metal with a low-energy, high-repetition-frequency laser, and to remove residual paint with a medium-energy laser.

[0045] Therefore, during use, when the metal workpiece is conveyed by the conveying mechanism to the corresponding position below the second U-shaped frame 36.

[0046] When the dual-axis motor 44 starts, the output shafts at both ends drive the threaded rod 45 to rotate synchronously. Since the threaded rod 45 is threadedly connected to the H-shaped double-headed groove rod 43 and the top of the dual-axis motor 44 is fixed, the two sets of H-shaped double-headed groove rods 43 on the left and right sides will move towards or away from each other along the axial direction of the threaded rod 45. Through the rotation linkage of the first adjusting rod 42 and the second adjusting rod 46, the vertical height and horizontal spacing of the grinding belt 47 are adjusted so that it fits tightly against the surface of the metal workpiece.

[0047] At this time, the drive device inside the second adjusting rod 46 adjacent to each other on the left is activated, which drives the rotating shaft to rotate, thereby driving the polishing belt 47 to rotate at high speed to polish the painted metal surface and remove impurities.

[0048] At the same time, the blower 39 starts to generate negative pressure, which is transmitted to the four suction heads 37 through the conveying pipe 38. The suction heads 37 quickly suck up the metal shavings, paint powder waste and other materials generated during the grinding process.

[0049] Then, a low-energy, high-repetition-frequency laser is used to continuously irradiate the painted area on the workpiece surface. The laser energy is used to destroy the interface between the paint and the metal substrate, causing the paint to peel off initially. Then, the laser mode is switched to medium energy to precisely remove the remaining paint on the workpiece surface, ensuring that the metal surface is basically exposed.

[0050] It should be noted that during the ablation process, the plasma spectral monitoring device identifies the characteristic peaks of the paint surface in real time. When the characteristic peaks disappear, the laser automatically stops. At the same time, the negative pressure dust extraction and nitrogen protective cover work simultaneously to remove paint mist and isolate the air, thus avoiding light path contamination and metal oxidation.

[0051] Furthermore, the speed of the two second conveyor belts 30 can be adjusted according to the working conditions.

[0052] Then, a third U-shaped frame 48 is fixedly installed on the upper right side of the mounting frame 1. A second motor 50 is fixedly installed at the center of the third U-shaped frame 48, and sliding grooves 49 are opened from the upper end surface of both sides to the inside. A symmetrical adjusting slide rod 51 is fixedly installed on the output shaft of the second motor 50. A connecting slide rod 52 is slidably installed inside the adjusting slide rod 51. Limiting blocks are used at the upper and lower ends of the connecting slide rod 52 where the height of the adjusting slide rod 51 is the same, so that the connecting slide rod 52 is always located inside the adjusting slide rod 51. Figure 12 As shown.

[0053] Then, a laser measuring device 53 is fixedly installed inside the third U-shaped frame 48 at the lower end of the connecting slide rod 52. Next, a third conveyor belt 54 is rotatably installed on the inner right side of the mounting frame 1 and below the third U-shaped frame 48. It should be noted that the right end of the first conveyor belt 17 is located above the second conveyor belt 30, and the second conveyor belt 30 and the third conveyor belt 54 are also located above the second conveyor belt 30, so as to ensure the metal conveying operation. Therefore, during the operation, after the second conveyor belt 30 has undergone grinding and scorching operations, the corresponding second motor 50 is started. Then, the adjusting slide rod 51 carries the connecting slide rod 52, and the connecting slide rod 52 carries the laser measuring device 53 to detect the metal after the operation. Through the cooperation of the second motor 50, the adjusting slide rod 51 and the connecting slide rod 52, the corresponding laser measuring device 53 can perform targeted operations on the metal.

[0054] Therefore, during use, the polished and scorched metal is inspected by the subsequent laser measuring device 53. Qualified products are picked up and taken away by the subsequent robotic arm, while unqualified products are transported to the corresponding collection box by the subsequent device.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal sorting device based on LIBS laser-induced technology, characterized in that: The installation includes a mounting frame (1), a material sorting box (8) is provided on the upper left side of the mounting frame (1), and a first U-shaped frame (26) is fixedly installed on the upper end of the mounting frame (1) near the left side. A spectrometer and a thickness gauge (27) in a symmetrical state are slidably installed on the upper surface of the first U-shaped frame (26) to the inner side. A second conveyor belt (30) in a symmetrical state is rotatably installed on the inner middle of the mounting frame (1). A second U-shaped frame (36) is provided above the second conveyor belt (30). A grinding belt (47) in a symmetrical state is slidably arranged inside the second U-shaped frame (36). A laser burner (41) is slidably mounted on the upper right side of the second U-shaped frame (36) and the laser burner (41) is located above the adjacent second grinding belt (47). A third U-shaped frame (48) is fixedly installed on the upper right side of the mounting frame (1). A second motor (50) is fixedly installed at the center of the third U-shaped frame (48). An adjusting slide rod (51) is fixedly installed on the output shaft of the second motor (50). A laser measuring device (53) is provided at the lower end of the adjusting slide rod (51) and on the inner side of the third U-shaped frame (48).

2. The metal sorting device based on LIBS laser-induced technology according to claim 1, characterized in that: A first connecting plate (2) is fixedly installed on the lower left side of the mounting frame (1). A first motor (3) is fixedly installed at the center of the upper left side of the first connecting plate (2). A first gear (4) is fixedly installed on the front and rear output shafts of the first motor (3). A first chain (5) is rotatably installed on the circumferential surface of the first gear (4). A first concave cam (6) is rotatably installed on the other end of the inner side of the first chain (5). The first concave cam (6) is rotatably installed on the front and rear sides of the left side of the mounting frame (1).

3. The metal sorting device based on LIBS laser-induced technology according to claim 1, characterized in that: The mounting frame (1) has a first slide rod (7) fixedly installed at the front and rear edges of the upper left side. The first slide rod (7) has a first slider (9) slidably installed on the upper circumferential surface of the first slide rod (7). The material sorting box (8) is fixedly installed inside the first slider (9) in the horizontal front and rear directions. The first spring (10) is fixedly installed at both the upper and lower ends of the first slider (9). The end of the first spring (10) away from the first slider (9) is fixedly installed on the first slide rod (7).

4. A metal sorting device based on LIBS laser-induced technology according to claim 1, characterized in that: Connecting wheels (11) are fixedly installed on both the front and rear sides of the material sorting box (8). A first concave cam (6) is attached to the outer circumferential surface of the connecting wheel (11). A discharge plate (12) is rotatably installed at the lower end of the material sorting box (8). The upper surface of the third U-shaped frame (48) is provided with a sliding groove (49) extending into the interior. A connecting slide rod (52) is slidably installed inside the sliding groove (49). The upper end of the connecting slide rod (52) extends into the interior of the adjusting slide rod (51), and the adjacent end of the adjusting slide rod (51) is fixedly connected to the output shaft of the second motor (50). A laser measuring device (53) is fixedly installed at the lower end of the connecting slide rod (52). A third conveyor belt (54) is rotatably installed below the laser measuring device (53) and inside the mounting frame (1).

5. A metal sorting device based on LIBS laser-induced technology according to claim 2, characterized in that: A second gear (13) is fixedly installed on the outer side of the first gear (4). A second chain (14) is rotatably installed on the circumferential surface of the second gear (13). A third gear (15) is rotatably installed on the other end of the inner side of the second chain (14). A first rotating shaft (16) in a symmetrical state is rotatably installed on the inner left end of the mounting frame (1). The inner sides of the two third gears (15) and the front and rear ends of the adjacent left first rotating shaft (16) are fixedly connected. A first conveyor belt (17) is rotatably installed on the outer circumferential surface of the two first rotating shafts (16) on the left and right.

6. A metal sorting device based on LIBS laser-induced technology according to claim 5, characterized in that: A fourth gear (18) is fixedly installed on the outer side of both the first concave cams (6) at the front and rear. A third chain (19) is rotatably installed on the circumferential surface of the fourth gear (18). A second concave cam (20) is rotatably installed on the other end of the inner side of the third chain (19). The second concave cam (20) is rotatably installed on the upper left side of the mounting frame (1). A limit frame (21) is fixedly installed on the upper left side of the mounting frame (1).

7. A metal sorting device based on LIBS laser-induced technology according to claim 6, characterized in that: The front and rear ends of the limiting frame (21) are slidably installed with second slide rods (22) to the inside. The inner sides of the two second slide rods (22) are fixedly installed with a vibrating screen (23). The front and rear sides of the mounting frame (1) are slidably installed with third slide rods (24). The inner right side of the third slide rod (24) is in contact with the second slide rod (22). The outer circumferential surface of the left end of the third slide rod (24) is fixedly installed with a second spring (25). The right end of the second spring (25) is fixedly installed on the L-shaped support rod of the mounting frame (1).

8. A metal sorting device based on LIBS laser-induced technology according to claim 1, characterized in that: A base plate (31) is fixedly installed at the lower middle part of the mounting frame (1). A baffle (28) is fixedly installed at the upper end of the base plate (31) and on the inner side of the mounting frame (1). A diversion plate (29) is fixedly installed on the left side of the baffle (28). A second conveyor belt (30) is rotatably installed on the inner side of the baffle (28). A telescopic pump (32) is fixedly installed on the lower inner side of the baffle (28). An installation rod (33) is fixedly installed on the telescopic rods of the two telescopic pumps (32) in the transverse direction. An auxiliary ring (34) is fixedly installed on the inner side of the installation rod (33) at equal intervals in the transverse direction. An auxiliary roller (35) is rotatably installed from the inside to the outside of the auxiliary ring (34).

9. A metal sorting device based on LIBS laser-induced technology according to claim 1, characterized in that: A second U-shaped frame (36) is fixedly installed at the upper end of the mounting frame (1). A suction head (37) is slidably installed from the upper end face of the second U-shaped frame (36) to the inside. A fan (39) is fixedly installed on the upper end face of the second U-shaped frame (36). A conveying pipe (38) is fixedly installed between the upper end of the fan (39) and the suction head (37). A waste bin (40) is fixedly installed on the upper end face of the second U-shaped frame (36) and on both sides of the fan (39). The fan (39) and the waste bin (40) are connected. A laser burner (41) is fixedly installed from the upper right side of the second U-shaped frame (36) to the inside.

10. A metal sorting device based on LIBS laser-induced technology according to claim 9, characterized in that: The upper inner surface of the second U-shaped frame (36) and located between two adjacent suction heads (37) are rotatably mounted with a first adjusting rod (42) in a symmetrical state. The lower ends of the two adjacent first adjusting rods (42) are rotatably mounted with H-shaped double-headed groove rods (43). The inner sides of the left and right H-shaped double-headed groove rods (43) are provided with a dual-axis motor (44). The output shafts at both ends of the dual-axis motor (44) are fixedly mounted with threaded rods (45). The threaded rods (45) and the adjacent H-shaped double-headed groove rods (43) are rotatably connected by threads. The inner sides of the lower ends of the left and right H-shaped double-headed groove rods (43) are rotatably mounted with a second adjusting rod (46). The inner sides of the lower ends of the second adjusting rods (46) are rotatably mounted with a grinding belt (47).

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