Laser welding equipment for hardware machining and welding method thereof

Abstract

The invention discloses laser welding equipment for hardware machining and a welding method thereof, and relates to the technical field of laser welding, the laser welding equipment comprises a machining case, a sliding rail mechanism is arranged at the bottom of the machining case, and a laser welding gun is arranged at the top of the inner wall of the machining case; a welding seam treatment mechanism used for cleaning welding seams of the hardware is arranged on one side of the laser welding gun, and a clamping mechanism used for clamping the hardware to be matched with the welding seam treatment mechanism for welding treatment is arranged at the upper end of the sliding rail mechanism. The secondary heating treatment of the supporting assembly can promote the rearrangement of a microstructure in a welding seam area, so that grains are refined, the microstructure is more compact, the mechanical property of a welding seam is improved, and the hardness and the wear resistance of the welding seam are improved; internal stress caused by non-uniform heating and cooling of materials in the welding process can be effectively relieved, the internal stress is reduced, the risk of weld joint cracking is reduced, and the overall stability and safety of the structure are improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to laser welding equipment for hardware processing and a welding method thereof. Background Art

[0002] Laser welding equipment for hardware processing is a highly automated and precise welding system, which is specially used to improve the quality and efficiency of hardware welding. The equipment integrates multiple functional components, including clamping mechanism, slide mechanism, laser welding gun, weld cleaning component, gas shielding component, support component and heat treatment component, ensuring that every link of the welding process is precisely controlled.

[0003] For example, the patent document with the publication number CN117300354B discloses a laser welding device for hardware processing, including a base cabinet, a work surface connected to the top of the base cabinet, a laser welding machine installed on the back side of the top of the work surface, positioning blocks for positioning the drain rack frame are symmetrically connected to the left and right sides of the top of the work surface, positioning plates are connected to the left and right sides of the top of the work surface, and receiving grooves for accommodating drain rack rods are evenly spaced from front to back on the top of the positioning plate, and a delivery mechanism is provided on the top of the work surface. Through the cooperation of the guide groove and the slide bar A, the support block can be moved to loosen the drain rack rods in the loading hopper during the backward movement of the loading hopper, so that the loading hopper can move backward to deliver the drain rack rods in it one by one into the receiving groove on the top of the positioning plate to dock with the drain rack frame, so that the loading of the rods can be completed quickly, thereby improving the processing efficiency.

[0004] During the laser welding of hardware, the presence of impurities such as dust and tiny particles at the welding point of the hardware will cause welding defects such as pores or cracks. In addition, the internal stress caused by uneven heating and cooling of the material during the welding process will lead to the risk of weld cracking, affecting the stability of the overall structure. Therefore, the present application provides a laser welding device and a welding method for hardware processing to meet the needs. Summary of the invention

[0005] The purpose of this application is to provide a laser welding device and a welding method for hardware processing, which can effectively solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a laser welding device for hardware processing, comprising a processing chassis, a slide rail mechanism is provided at the bottom of the processing chassis, a laser welding gun is provided at the top of the inner wall of the processing chassis, a weld processing mechanism for cleaning the weld of the hardware is provided on one side of the laser welding gun, and a clamping mechanism for clamping the hardware and cooperating with the weld processing mechanism for welding is provided at the upper end of the slide rail mechanism;

[0007] The weld processing mechanism includes a heat treatment component, a weld cleaning component, a gas protection component and a support component. The support component is arranged on one side of the laser welding gun. A gas protection component for distributing inert gas flow to prevent weld oxidation is arranged inside the support component. A heat treatment component for heat treating the weld point to eliminate the stress of the hardware is arranged at the bottom of the gas protection component. A weld cleaning component for cleaning the welding of the hardware is arranged inside the support component and located on one side of the laser welding gun.

[0008] The heat treatment component includes a jet hood and an inner flow tube. The jet hood is used for the flow of inert gas. The inner flow tube is located inside the jet hood. One end of the jet hood and the inner flow tube are respectively connected to a jet nozzle and an inner nozzle. The jet nozzle is in a convergent mouth shape.

[0009] Among them, a nozzle sleeve is installed inside the inner nozzle, and the outer surface of the nozzle sleeve is provided with a plurality of spray holes distributed in a circular array, the inner wall of the air nozzle is provided with an air guide ring, and the air guide ring sleeve is arranged outside the nozzle sleeve, and the cross-section of the air guide ring is arc-shaped to cooperate with the air nozzle to accelerate the gas flow rate.

[0010] Among them, the support assembly includes a mounting plate, which is fixedly installed on one side of the laser welding gun, a mounting ring is provided at the bottom of the mounting plate, a round tube is provided at the bottom of the mounting ring, a laser generator is provided inside the mounting plate, and a placement rack is provided on one side of the laser generator.

[0011] Wherein, the weld cleaning assembly comprises a ventilation pipe, which is installed inside the mounting plate, and a flat pipe with a flat mouth for focusing wind force is arranged at one end of the ventilation pipe, and the flat pipe is aligned with the welding position of the hardware.

[0012] The gas protection assembly includes a laser tube and a gas hood, a sleeve is arranged inside the gas hood, a leak hole cover is arranged at the upper end of the sleeve, the leak hole cover is a perforated tube, the outer surface of the leak hole cover is provided with two spacers connected to the inner wall of the gas hood, and the sleeve is arranged on the outer surface of the laser tube.

[0013] Wherein, the gas cover is installed at the bottom of the mounting ring, and the leak hole cover is sleeved on the round tube at the bottom of the mounting ring.

[0014] Wherein, the outer surface of the gas hood is connected to the first gas pipe and the second gas pipe, and an inert gas pipe is arranged at the bottom of the gas hood.

[0015] The gas hood is installed on the upper end of the gas hood, and the inert gas pipe and the gas hood are respectively located on both sides of the laser tube, and the inert gas pipe is located between the laser welding gun and the laser tube.

[0016] Among them, the clamping mechanism includes a socket, which is fixedly installed on the upper end of the slide rail mechanism, and the bottom wall of the socket is provided with a plurality of through holes distributed in a circular array, the upper end of the socket is provided with an arc cone, the lower end of the socket is provided with a bottom ring cover, and the bottom of the bottom ring cover is connected to a suction pipe.

[0017] The present invention also provides a welding method of a laser welding device for hardware processing, and the specific welding method is as follows:

[0018] S1. When in use, clamp the hardware on the clamping mechanism, and the slide rail mechanism pushes the clamping mechanism to move to the bottom of the laser welding gun, and then the laser welding gun welds the hardware on the clamping mechanism;

[0019] S2. When the laser welding gun is used to weld hardware, the weld cleaning component can spray air in advance to clean the dust in the gap between the hardware, so that there are no impurities in the weld during the subsequent welding of the hardware. When welding hardware, the weld will oxidize due to its high temperature and rapid contact with the air, and the gas protection component can quickly spray inert gas to blow on the weld surface of the hardware, which can cool the weld and prevent the weld from oxidizing;

[0020] S3. After the weld is cooled by the gas shielding component, the support component is set to heat the weld again. The support component emits laser to heat the weld. The reheated weld is cooled by the heat treatment component after being heat treated by the support component. The heat treatment component can spray quenching liquid and inert gas on the surface of the hardware for cooling. By heat treating the weld of the hardware, the stress of the weld of the hardware can be eliminated.

[0021] In summary, the technical effects and advantages of the present invention are as follows:

[0022] 1. The secondary heating treatment of the support assembly in the present invention can cause the microstructure of the weld area to rearrange, so that the grains are refined, the structure is more compact, the mechanical properties of the weld are improved, and its hardness and wear resistance are increased. In addition, through appropriate heat treatment, the internal stress caused by uneven heating and cooling of the material during welding can be effectively alleviated, reducing the internal stress and reducing the risk of weld cracking, thereby improving the overall stability and safety of the structure. The microstructure of the weld area can be fixed through the rapid cooling process of the heat treatment assembly to prevent performance degradation caused by long-term exposure to high temperatures. In addition, the use of quenching liquid and inert gas can ensure the uniformity of the cooling process, further stabilize the physical and chemical properties of the weld, and the weld can be improved in surface finish and reduce or eliminate surface defects after heat treatment.

[0023] 2. The weld cleaning assembly of the present invention can effectively remove impurities such as dust and tiny particles from the welding of hardware by spraying airflow, thereby improving the quality of welding. Because the presence of impurities may cause welding defects, such as pores or cracks, a clean welding surface can ensure better fusion between metal materials, thereby improving the strength and durability of the welded joint. During the welding process, metals at high temperatures are very easy to react with oxygen in the air to form oxides, which affects the welding quality and material properties. The gas shielding assembly sprays inert gas to cover the weld surface to isolate the air, effectively prevent weld oxidation, and maintain the purity of the welding area. Inert gas also has good thermal conductivity, which can help the weld area to cool quickly and evenly, avoiding thermal stress concentration caused by uneven cooling speed, thereby reducing the risk of deformation and cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a first three-dimensional structural schematic diagram of laser welding equipment for hardware processing;

[0026] Figure 2 It is a second three-dimensional structural schematic diagram of the laser welding equipment for hardware processing;

[0027] Figure 3 This is a cross-sectional view of the three-dimensional connection structure of the laser welding equipment used for hardware processing;

[0028] Figure 4 This is a schematic diagram of the partial three-dimensional connection structure of laser welding equipment for hardware processing;

[0029] Figure 5 A schematic diagram of the stereoscopic connection structure of a laser welding gun and a weld processing mechanism from a first-person perspective;

[0030] Figure 6 A schematic diagram of a second-view stereoscopic connection structure of a weld processing mechanism and a laser welding gun;

[0031] Figure 7 A schematic diagram of the first-person perspective stereoscopic connection structure of a laser welding gun and a weld cleaning assembly;

[0032] Figure 8 A schematic diagram of a second-view stereoscopic connection structure of a laser welding gun and a weld cleaning assembly;

[0033] Fig. 9It is a schematic diagram of the three-dimensional connection structure of the weld cleaning assembly;

[0034] Fig.10 A schematic diagram of a three-dimensional connection structure of a weld processing mechanism from a first-person perspective;

[0035] Fig.11 A schematic diagram of a three-dimensional connection structure of a weld processing mechanism from a second viewing angle;

[0036] Fig.12 It is a schematic diagram of the three-dimensional connection structure of the heat treatment component and the support component;

[0037] Fig.13 It is a schematic diagram of the three-dimensional connection structure of the gas protection component and the heat treatment component;

[0038] Fig.14 It is a schematic diagram of the three-dimensional connection structure of the support assembly;

[0039] Fig.15 It is a schematic diagram of the three-dimensional connection structure of the heat treatment component and the gas protection component;

[0040] Fig.16 It is a cross-sectional view of the three-dimensional connection structure of the gas protection component;

[0041] Fig.17 It is a schematic diagram of the three-dimensional connection structure of the gas protection component;

[0042] Fig.18 It is a schematic diagram of the three-dimensional connection structure of the gas protection component and the heat treatment component;

[0043] Fig.19 It is a cross-sectional view of the three-dimensional connection structure of the heat treatment component;

[0044] Fig. 20 It is a cross-sectional view of a local three-dimensional connection structure of a heat treatment component;

[0045] Fig.21 It is a schematic diagram of the three-dimensional connection structure of the slide rail mechanism and the clamping mechanism;

[0046] Fig. 22 It is a cross-sectional view of the three-dimensional connection structure of the clamping mechanism.

[0047] In the figure: 1, processing box; 2, slide rail mechanism; 3, clamping mechanism; 31, ring arc cone; 32, holder; 33, through hole; 34, bottom ring cover; 35, suction pipe; 4, laser welding gun; 5, weld processing mechanism; 51, heat treatment component; 511, jet cover; 512, inner flow pipe; 513, jet nozzle; 514, inner nozzle; 515, nozzle sleeve; 516, spray hole; 517, air guide ring; 52 , weld cleaning assembly; 521, ventilation pipe; 522, flat tube; 53, gas protection assembly; 530, laser tube; 531, inert gas pipe; 532, gas hood; 533, sleeve; 534, first gas pipe; 535, second gas pipe; 536, leak hole cover; 537, spacer; 54, support assembly; 541, mounting plate; 542, mounting ring; 543, laser generator; 544, placement rack. DETAILED DESCRIPTION

[0048] 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.

[0049] Example 1, Reference Figures 1 to 22 A laser welding device for hardware processing shown in the figure comprises a processing chassis 1, a slide rail mechanism 2 is arranged at the bottom of the processing chassis 1, a laser welding gun 4 is arranged at the top of the inner wall of the processing chassis 1, a weld processing mechanism 5 for cleaning the weld of the hardware is arranged on one side of the laser welding gun 4, and a clamping mechanism 3 for clamping the hardware and cooperating with the weld processing mechanism 5 for welding is arranged at the upper end of the slide rail mechanism 2;

[0050] The weld processing mechanism 5 includes a heat treatment component 51, a weld cleaning component 52, a gas protection component 53 and a support component 54. The support component 54 is arranged on one side of the laser welding gun 4. The support component 54 is provided with a gas protection component 53 for distributing an inert gas flow to prevent the weld from being oxidized. The bottom of the gas protection component 53 is provided with a heat treatment component 51 for heat treating the weld point to eliminate the stress of the hardware. The support component 54 is provided with a weld cleaning component 52 for cleaning the welding of the hardware on one side of the laser welding gun 4.

[0051] It is worth noting that during use, the hardware is first fixed on the clamping mechanism 3, and then the slide rail mechanism 2 moves the clamping mechanism 3 together with the hardware to just below the laser welding gun 4, ready for welding. During this process, the weld cleaning component 52 sprays air into the gap of the hardware in advance to effectively remove internal dust and ensure that the welding area is clean and free of impurities. As the laser welding gun 4 starts the welding operation, in order to prevent the weld from oxidizing due to high temperature contact with air, the gas protection component 53 immediately releases inert gas to cover the weld surface, which not only achieves rapid cooling but also effectively prevents oxidation.

[0052] Among them, the weld cleaning component 52 can effectively remove impurities such as dust and tiny particles from the welding points of hardware by jetting airflow, thereby improving the quality of welding. Because the presence of impurities may cause welding defects such as pores or cracks, a clean welding surface can ensure better fusion between metal materials, thereby improving the strength and durability of the welded joint.

[0053] During the welding process, metal at high temperature can easily react with oxygen in the air to form oxides, which affects the welding quality and material properties. The gas shielding component 53 sprays inert gas to cover the weld surface to isolate the air, effectively prevent weld oxidation, and maintain the purity of the welding area.

[0054] In addition, inert gas has good thermal conductivity, which can help the weld area cool quickly and evenly, avoiding thermal stress concentration caused by uneven cooling speed, thereby reducing the risk of deformation and cracks.

[0055] When welding is completed, in order to further improve the quality of the weld, the support component 54 uses a laser to perform secondary heating treatment on the cooled weld, aiming to improve the weld structure and reduce internal stress; then, the heat treatment component 51 takes effect and rapidly cools the weld by spraying quenching liquid and inert gas. This process not only helps to stabilize the weld performance, but also significantly reduces the residual stress in the weld area, thereby achieving the purpose of optimizing the welding quality of hardware.

[0056] Among them, the secondary heating treatment of the support component 54 can promote the rearrangement of the microstructure in the weld area, make the grains refined, the structure denser, improve the mechanical properties of the weld, increase its hardness and wear resistance, and through proper heat treatment, it can effectively alleviate the internal stress caused by uneven heating and cooling of the material during welding, reduce internal stress, reduce the risk of weld cracking, and improve the overall stability and safety of the structure.

[0057] Furthermore, the rapid cooling process of the heat treatment component 51 can fix the microstructure of the weld area and prevent performance degradation caused by long-term exposure to high temperatures. In addition, the use of quenching liquid and inert gas can ensure the uniformity of the cooling process and further stabilize the physical and chemical properties of the weld. Moreover, the weld can be improved in surface finish and reduce or eliminate surface defects after heat treatment.

[0058] Embodiment 2: Based on the weld processing mechanism 5 proposed in Embodiment 1, this embodiment provides a further technical solution of a weld cleaning component 52 and a gas protection component 53.

[0059] pass Figures 5 to 9 The weld cleaning assembly 52 shown includes a ventilation pipe 521, which is installed inside the mounting plate 541, and a flat pipe 522 with a flat mouth that focuses wind force is provided at one end of the ventilation pipe 521, and the flat pipe 522 is aligned with the welding position of the hardware.

[0060] One end of the ventilation pipe 521 is connected to an external air pump, and the compressed air is sent into the ventilation pipe 521 through the air pump. The flat tube 522 is located below the laser welding gun 4, and can focus the air ejected from the ventilation pipe 521 and blow it precisely at the joint of the hardware to be welded, so as to realize the process of welding immediately after cleaning and ensure the cleanliness of the surface of the hardware before welding.

[0061] refer to Figures 15 to 17 The gas protection assembly 53 shown includes a laser tube 530 and a gas hood 532. A sleeve 533 is arranged inside the gas hood 532. A leak cover 536 is arranged at the upper end of the sleeve 533. The leak cover 536 is a perforated tube. The outer surface of the leak cover 536 is provided with two spacers 537 connected to the inner wall of the gas hood 532, and the sleeve 533 is sleeved on the outer surface of the laser tube 530.

[0062] The gas hood 532 is installed at the bottom of the mounting ring 542 , and the leak hole cover 536 is sleeved on the round tube at the bottom of the mounting ring 542 . The outer surface of the gas hood 532 is connected to the first gas pipe 534 and the second gas pipe 535 , and an inert gas pipe 531 is provided at the bottom of the gas hood 532 .

[0063] The inert gas pipe 531 is in a flat shape, and the design of the inert gas pipe 531 enables the inert gas ejected from the inert gas pipe 531 to be focused and then sprayed onto the surface of the weld.

[0064] The gas hood 532 is installed on the upper end of the gas hood 511 , and the inert gas pipe 531 and the gas hood 511 are respectively located on both sides of the laser tube 530 , and the inert gas pipe 531 is located between the laser welding gun 4 and the laser tube 530 .

[0065] It is worth noting that when the laser welding gun 4 is welding the hardware, the second air pipe 535 and the first air pipe 534 both spray inert gas into the gas hood 532. The interior of the gas hood 532 is divided into two independent spaces by the partition 537, the laser tube 530 and the sleeve 533. The inert gas sprayed from the first air pipe 534 first enters the gas hood 532 and then flows into the heat treatment component 51; while the inert gas sprayed from the second air pipe 535 passes through the gas hood 532 and is discharged through the inert gas pipe 531.

[0066] The inert gas pipe 531 is arranged between the laser welding gun 4 and the laser tube 530. When the laser welding gun 4 completes welding, the inert gas pipe 531 quickly sprays out inert gas to quickly cool the weld, effectively preventing the uncooled weld from coming into contact with the air and oxidizing, thereby ensuring the cleanliness and protection of the welding area and improving the welding quality and stability.

[0067] Among them, the inert gas pipe 531 is arranged between the laser welding gun 4 and the laser tube 530, which can quickly spray inert gas after welding is completed, quickly and evenly cool the weld, reduce the width of the heat-affected zone, reduce the risk of welding deformation and cracks, and the uniform cooling process reduces the internal stress generated during welding and reduces the possibility of weld cracking.

[0068] Embodiment 3: Based on the weld processing mechanism 5 proposed in Embodiment 1, this embodiment provides a further technical solution for the heat treatment component 51, the support component 54 and the clamping mechanism 3.

[0069] The support assembly 54 includes a mounting plate 541, which is fixedly mounted on one side of the laser welding gun 4. A mounting ring 542 is provided at the bottom of the mounting plate 541, a round tube is provided at the bottom of the mounting ring 542, a laser generator 543 is provided inside the mounting plate 541, and a placement rack 544 is provided on one side of the laser generator 543.

[0070] It is worth noting that after the hardware is welded by the laser welding gun 4, the laser generator 543 will adjust the irradiation power of the laser according to the same principle as the laser welding gun 4 to perform heat treatment on the weld of the hardware. The laser first irradiates the surface of the weld through the laser tube 530, and the laser tube 530 passes through the gas hood 532. When the laser passes through the laser tube 530 and causes its surface to heat up, the inert gas inside the gas hood 532 can cool the surface of the laser tube 530, ensuring the stable operation of the laser tube 530 and improving the effect of the heat treatment.

[0071] The heat treatment component 51 includes a jet hood 511 and an inner flow tube 512. The jet hood 511 is used for the flow of inert gas. The inner flow tube 512 is located inside the jet hood 511. One end of the jet hood 511 and the inner flow tube 512 are respectively connected to a jet nozzle 513 and an inner nozzle 514. The jet nozzle 513 is in a convergent shape.

[0072] One end of the inner flow tube 512 passes through the gas hood 532 , and the inner flow tube 512 is connected to an external pump. The pump squeezes the quenching liquid into the inner flow tube 512 and then sprays it out through the spray hole 516 on the nozzle sleeve 515 .

[0073] A nozzle sleeve 515 is installed inside the inner nozzle 514, and a plurality of spray holes 516 distributed in a circular array are provided on the outer surface of the nozzle sleeve 515. An air guide ring 517 is provided on the inner wall of the air nozzle 513, and the air guide ring 517 is sleeved on the outside of the nozzle sleeve 515. The cross-section of the air guide ring 517 is arc-shaped to cooperate with the air nozzle 513 to accelerate the gas flow rate.

[0074] It is worth noting that after the weld of the hardware is heat treated, the inert gas in the jet cover 511 is ejected through the jet nozzle 513, and the quenching liquid in the inner flow tube 512 is ejected from the jet hole 516 through the nozzle sleeve 515. The design of the jet hole 516 allows the ejected quenching liquid to be scattered, rather than being ejected directly through the nozzle sleeve 515. The purpose of this design is to allow the quenching liquid to be blocked by the air guide ring 517 when ejecting, thereby forming a dispersion effect.

[0075] At the same time, the inert gas inside the air nozzle 513 is focused by the shape of its convergence port and ejected quickly. These focused inert gases mix the quenching liquid ejected from the nozzle 516 and eject them together onto the surface of the weld. The design of the nozzle 516 to diffuse and spray in all directions ensures that the inert gas and the quenching liquid can be quickly mixed, so that the mixed quenching liquid is evenly sprayed on the surface of the weld, effectively eliminating the stress on the surface of the hardware and improving the stability and quality of the weld.

[0076] Among them, the rapid mixing of inert gas and quenching liquid ensures that the quenching liquid can be evenly sprayed on the weld surface, achieving uniform cooling of the weld, reducing the width of the heat-affected zone, and reducing the risk of welding deformation and cracks. The protective effect of the inert gas can effectively isolate the weld from contact with the air, prevent the weld from oxidizing during the cooling process, and maintain the purity and strength of the weld. The uniform cooling process reduces the internal stress generated during the welding process, reduces the possibility of weld cracking, and improves the stability of the overall structure.

[0077] The clamping mechanism 3 includes a base 32, which is fixedly mounted on the upper end of the slide rail mechanism 2. The bottom wall of the base 32 is provided with a plurality of through holes 33 distributed in a circular array. The upper end of the base 32 is provided with an arc cone 31, the lower end of the base 32 is provided with a bottom ring cover 34, and the bottom of the bottom ring cover 34 is connected to a suction pipe 35.

[0078] It is worth noting that when laser welding is performed on hardware, the hardware is first fixed on the holder 32. After the mixed gas and liquid ejected by the air nozzle 513 and the nozzle sleeve 515 are sprayed on the surface of the hardware, in order to prevent part of the gas and liquid from diffusing, the diffused gas and liquid are sucked through the through hole 33 through the suction pipe 35 and the bottom ring cover 34. The conical disk design of the annular arc cone 31 can assist the suction pipe 35 to collect the diffused gas and liquid more effectively, thereby ensuring the cleanliness of the welding area and improving the welding quality and efficiency.

[0079] The present invention also provides a welding method of a laser welding device for hardware processing, and the specific welding method is as follows:

[0080] S1. When in use, the hardware is clamped on the clamping mechanism 3, and the slide rail mechanism 2 pushes the clamping mechanism 3 to move to the bottom of the laser welding gun 4, and then the laser welding gun 4 welds the hardware on the clamping mechanism 3;

[0081] S2. When the laser welding gun 4 is used to weld hardware, the weld cleaning component 52 can spray air in advance to clean the dust in the gap between the hardware, so that no impurities are mixed in the weld during the subsequent welding of the hardware. When the laser welding gun 4 is welding the hardware, the weld will oxidize due to its high temperature and rapid contact with the air, and the gas protection component 53 can quickly spray inert gas to blow on the weld surface of the hardware, which can cool the weld and prevent the weld from oxidizing;

[0082] S3. After the weld is cooled by the gas protection component 53, the support component 54 is set to heat the weld again. The support component 54 emits a laser to heat the weld. After the weld is heat treated by the support component 54, the weld that is heated again is cooled by the heat treatment component 51. The heat treatment component 51 can spray quenching liquid and inert gas on the surface of the hardware for cooling. By heat treating the weld of the hardware, the stress of the weld of the hardware can be eliminated.

[0083] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser welding device for hardware processing, comprising a processing chassis (1), wherein a slide rail mechanism (2) is provided at the bottom of the processing chassis (1), characterized in that: A laser welding gun (4) is arranged at the top of the inner wall of the processing machine box (1); a weld processing mechanism (5) for cleaning the weld of hardware is arranged on one side of the laser welding gun (4); and a clamping mechanism (3) for clamping the hardware and cooperating with the weld processing mechanism (5) for welding is arranged at the upper end of the slide rail mechanism (2); The weld processing mechanism (5) comprises a heat treatment component (51), a weld cleaning component (52), a gas protection component (53) and a support component (54); the support component (54) is arranged on one side of the laser welding gun (4); a gas protection component (53) for distributing an inert gas flow to prevent weld oxidation is arranged inside the support component (54); a heat treatment component (51) for heat treating weld points to eliminate stress on hardware is arranged at the bottom of the gas protection component (53); a weld cleaning component (52) for cleaning the weld of hardware is arranged inside the support component (54) and located on one side of the laser welding gun (4); The heat treatment component (51) comprises a jet hood (511) and an inner flow tube (512), wherein the jet hood (511) is used for the flow of inert gas, and the inner flow tube (512) is located inside the jet hood (511), and one end of the jet hood (511) and the inner flow tube (512) are respectively connected to a jet nozzle (513) and an inner nozzle (514), and the jet nozzle (513) is in a convergent mouth shape.

2. The laser welding equipment for hardware processing according to claim 1 is characterized in that: A nozzle sleeve (515) is installed inside the inner nozzle (514), and a plurality of spray holes (516) distributed in a ring array are provided on the outer surface of the nozzle sleeve (515). An air guide ring (517) is provided on the inner wall of the air nozzle (513), and the air guide ring (517) is sleeved on the outside of the nozzle sleeve (515). The cross section of the air guide ring (517) is arc-shaped and cooperates with the air nozzle (513) to accelerate the gas flow rate.

3. The laser welding equipment for hardware processing according to claim 1 is characterized in that: The support assembly (54) comprises a mounting plate (541), wherein the mounting plate (541) is fixedly mounted on one side of the laser welding gun (4), a mounting ring (542) is arranged at the bottom of the mounting plate (541), a round tube is arranged at the bottom of the mounting ring (542), a laser generator (543) is arranged inside the mounting plate (541), and a placement rack (544) is arranged on one side of the laser generator (543).

4. The laser welding equipment for hardware processing according to claim 1 is characterized in that: The weld cleaning assembly (52) comprises a ventilation pipe (521), which is installed inside the mounting plate (541), and a flat pipe (522) with a flat mouth for focusing wind force is provided at one end of the ventilation pipe (521), and the flat pipe (522) is aligned with the welding position of the hardware.

5. The laser welding equipment for hardware processing according to claim 1 is characterized in that: The gas protection component (53) comprises a laser tube (530) and a gas hood (532). A sleeve (533) is arranged inside the gas hood (532). A leak hole cover (536) is arranged at the upper end of the sleeve (533). The leak hole cover (536) is in the shape of a perforated tube. Two spacers (537) connected to the inner wall of the gas hood (532) are arranged on the outer surface of the leak hole cover (536). The sleeve (533) is sleeved on the outer surface of the laser tube (530).

6. The laser welding equipment for hardware processing according to claim 5 is characterized in that: The gas cover (532) is installed at the bottom of the mounting ring (542), and the leak hole cover (536) is sleeved on the round tube at the bottom of the mounting ring (542).

7. The laser welding equipment for hardware processing according to claim 6 is characterized in that: The outer surface of the gas hood (532) is connected to the first gas pipe (534) and the second gas pipe (535), and an inert gas pipe (531) is arranged at the bottom of the gas hood (532).

8. The laser welding equipment for hardware processing according to claim 7 is characterized in that: The gas hood (532) is installed at the upper end of the gas hood (511), and the inert gas pipe (531) and the gas hood (511) are respectively located on both sides of the laser tube (530), and the inert gas pipe (531) is located between the laser welding gun (4) and the laser tube (530).

9. The laser welding equipment for hardware processing according to claim 1, characterized in that: The clamping mechanism (3) comprises a clamping seat (32), the clamping seat (32) is fixedly mounted on the upper end of the slide rail mechanism (2), a bottom wall of the clamping seat (32) is provided with a plurality of through holes (33) distributed in a ring array, an arc cone (31) is arranged at the upper end of the clamping seat (32), a bottom ring cover (34) is arranged at the lower end of the clamping seat (32), and a suction pipe (35) is connected to the bottom of the bottom ring cover (34).

10. A welding method of a laser welding device for hardware processing according to any one of claims 1 to 9, characterized in that: The specific welding methods are as follows: S1. When in use, the hardware is clamped on the clamping mechanism (3), the slide rail mechanism (2) pushes the clamping mechanism (3) to move to the bottom of the laser welding gun (4), and then the laser welding gun (4) welds the hardware on the clamping mechanism (3); S2. When the laser welding gun (4) is welding, the weld cleaning component (52) can clean the dust on the surface of the hardware in advance, and the set gas protection component (53) sprays inert gas to prevent the weld from oxidation; S3. When welding hardware, after the weld is treated by the gas protection component (53), the heat treatment component (51) cooperates with the support component (54) to heat treat the weld to eliminate the stress of the weld of the hardware.

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