Smoke dust self-purification laser welding device

Abstract

The invention discloses a smoke dust self-purification laser welding device and belongs to the field of laser welding, the smoke dust self-purification laser welding device comprises a workbench, a sliding supporting frame is arranged above the workbench, a laser welding head is arranged on the front face of the sliding supporting frame, a containing groove is formed in the upper portion of the workbench, and a blocking and protecting plate is slidably connected to the inner surface of the containing groove; smoke suction assemblies are arranged on the left side and the right side of the blocking and protecting plate and comprise lifting bases, the lifting bases are fixedly connected with the outer surface of the blocking and protecting plate, and electric push rods are fixedly connected to the upper portions of the lifting bases. Smoke generated during part welding is concentrated by arranging the blocking and protecting plate, the blocking and protecting plate is in a folded state in a normal state so that flatness of the workbench can be guaranteed, the smoke suction pipe can be driven to get close to the middle while the blocking and protecting plate is lifted through the smoke suction assembly till the smoke suction pipe is aligned with a hole in the blocking and protecting plate, and the effect of conveniently absorbing smoke is achieved.

Description

Technical Field

[0001] This application relates to the field of laser welding, and more particularly to a laser welding device with self-purifying fume and dust. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a laser beam with a high energy density as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. By controlling parameters such as the width, energy, peak power, and repetition frequency of laser pulses, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts.

[0003] The patent document with the publication number CN105364310A discloses a laser welding device with fume and dust purification function. The invention provides a laser welding device with self-purifying fume and dust, including a laser welding gun. A laser welding head is provided at the lower end of the laser welding gun. A workbench is provided below the laser welding head. A groove for placing the workpiece is provided on the workbench. Suction pipes are provided on the side walls on both sides of the groove.

[0004] In the above application document, the workpiece is placed in the groove to make the fume during welding more concentrated. However, the groove will limit the placement of the workpiece. The fixed setting of the groove makes it inconvenient to place large workpieces. It is not convenient to set a groove area to concentrate the fume when small parts need to be welded, and it is not convenient to adapt to different workpieces when absorbing fume. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a laser welding device with self-purifying fume and dust, which solves the problems raised in the above background art.

[0006] To achieve the above object, this application provides a laser welding device with self-purifying fume and dust, including a workbench. A sliding support frame is provided above the workbench. A laser welding head is provided on the front surface of the sliding support frame. A receiving groove is provided above the workbench, and a shielding plate is slidably connected to the inner surface of the receiving groove. Smoking components are provided on both the left and right sides of the shielding plate. The smoking components include lifting seats, which are fixedly connected to the outer surface of the shielding plate. Electric push rods are fixedly connected above the lifting seats, and the electric push rods are fixedly connected to the top of the inner surface of the sliding support frame. A limiting sleeve is fixedly connected above the workbench. A sliding frame is slidably connected to the inner surface of the limiting sleeve. A moving frame is fixedly connected to the left end of the sliding frame. An air suction pipe is fixedly connected above the moving frame. A spring is fixedly connected between the inner surface of the sliding frame and the limiting sleeve. A steel wire rope is connected between the inner surface of the sliding frame and the lifting seat by a rope. A roller is movably attached to the upper surface of the steel wire rope. The front and rear surfaces of the roller are rotatably connected to first support pieces, and the first support pieces are fixedly connected above the workbench.

[0007] Preferably, suction fans are fixedly installed on both the left and right sides of the workbench, and the suction fans are connected by pipelines to the suction air ducts.

[0008] Preferably, support legs are fixedly connected to the lower part of the workbench.

[0009] Preferably, a spraying assembly is arranged above the shielding plate. The spraying assembly includes a support plate, the support plate is fixedly connected to the left side of the sliding support frame, a sponge pad is fixedly connected to the left side of the support plate, a second support piece is fixedly connected to the left side of the support plate, a water inlet pipe penetrates and is rotatably connected to the front of the second support piece, a pipeline rotary joint is fixedly connected to the rear end of the water inlet pipe, a spray head is fixedly connected to the right side of the water inlet pipe, a second gear is fixedly connected to the front of the water inlet pipe, a first gear meshes with the lower part of the second gear, the first gear is rotatably connected to the front of the second support piece, a second hydraulic chamber is fixedly connected to the left side of the sliding support frame, a second hydraulic rod is slidably connected to the inner surface of the second hydraulic chamber, the upper end of the second hydraulic rod is fixedly connected to a connecting block, a rack is fixedly connected to the rear of the connecting block, the rack is slidably connected to the left side of the sliding support frame, and the rack meshes with the right side of the first gear.

[0010] Preferably, the spraying assembly further includes a mounting plate, the mounting plate is hinged to the right side of the workbench, a first hydraulic chamber is fixedly connected above the mounting plate, the first hydraulic chamber is connected by pipelines to the second hydraulic chamber, a first hydraulic rod is slidably connected to the inner surface of the first hydraulic chamber, the upper end of the first hydraulic rod is hinged to a connecting piece, and the connecting piece is fixedly connected to the right end of the sliding frame.

[0011] Preferably, a water squeezing assembly is arranged below the water inlet pipe. The water squeezing assembly includes a squeezing block, the squeezing block is fixedly connected above the water inlet pipe, a water receiving groove is fixedly connected to the left side of the sliding support frame, and a water guiding block is fixedly connected below the support plate.

[0012] Preferably, the water squeezing assembly further includes a water storage tank, the water storage tank is fixedly connected to the rear of the workbench, and a water delivery pipe is connected by pipelines between the rear end of the water storage tank and the water receiving groove.

[0013] Preferably, a valve is fixedly connected below the water storage tank.

[0014] The advantages of the present application are as follows: 1. In the present application, by arranging a shielding plate to concentrate the fumes during part welding, the shielding plate is in a retracted state under normal conditions to ensure the flatness of the workbench. When the smoking assembly raises the shielding plate, it will also drive the suction air duct to move closer to the middle until it aligns with the holes on the shielding plate, which has the effect of facilitating the absorption of fumes.

[0015] 2. In the present application, a spray component is provided to cool and remove dust from the welded parts. The nozzles in the spray component are covered by sponge blocks under normal conditions to protect the nozzles. When the suction component drives the suction pipe to move closer to the middle, it also drives the nozzles to rotate towards the parts on the workbench, which has the effect of facilitating the cooling and dust removal of the parts.

[0016] 3. When the nozzles rotate in the present application, they also drive the water squeezing component to squeeze the sponge blocks, thereby squeezing out and collecting the water in the sponge blocks, which has the effect of facilitating the recycling of the excess water seeping out during the use of the nozzles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application, making other features, objectives, and advantages of the present application more obvious. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a bottom view of the overall structure of the present invention; Figure 3 is a left view of the overall structure of the present invention; Figure 4 is a schematic diagram of the shielding state of the overall structure of the present invention; Figure 5 is a top view of the shielding state of the overall structure of the present invention; Figure 6 is of the present invention Figure 1 a magnified schematic diagram of the structure at A in; Figure 7 is of the present invention Figure 3 a magnified schematic diagram of the structure at B in; Figure 8 is of the present invention Figure 3 a magnified schematic diagram of the structure at C in.

[0018] In the above figures, 1. Workbench; 2. Sliding support frame; 3. Laser welding head; 4. Smoking component; 401. First support piece; 402. Lifting seat; 403. Electric push rod; 404. Limit sleeve; 405. Sliding frame; 406. Moving frame; 407. Suction air pipe; 408. Spring; 409. Steel wire rope; 410. Roller; 5. Guard plate; 6. Suction fan; 7. Support leg; 8. Spraying component; 801. Support plate; 802. Sponge pad; 803. Second support piece; 804. Water inlet pipe; 805. Sprinkler head; 806. Second gear; 807. First gear; 808. Second hydraulic chamber; 809. Second hydraulic rod; 810. Connecting block; 811. Rack; 812. Pipe rotary joint; 813. Mounting plate; 814. First hydraulic chamber; 815. First hydraulic rod; 816. Connecting piece; 9. Water squeezing component; 901. Extrusion block; 902. Water receiving tank; 903. Water guiding block; 904. Water storage tank; 905. Water delivery pipe; 10. Valve. Detailed implementation manner

[0019] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0020] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0022] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the terms "installed", "set up", "provided with", "connected", "linked", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments.

[0025] Example 1: Refer to Figures 1-8, this embodiment provides a laser welding device with self-purifying fumes, including a workbench 1. The workbench 1, the sliding support frame 2, and the laser welding head 3 form the main body of the laser welding equipment, which is prior art. Above the workbench 1, there is a sliding support frame 2. The sliding support frame 2 is used to drive the laser welding head 3 to move in the X-axis and Y-axis directions, which is prior art. On the front side of the sliding support frame 2, there is a laser welding head 3. The laser welding head 3 is used for laser welding and can move up and down, which is prior art. Above the workbench 1, there is a receiving groove, and a shielding plate 5 is slidably connected to the inner surface of the receiving groove. The shape of the receiving groove is a square shape. Through holes corresponding to the suction air pipes 407 are provided on the left and right sides of the shielding plate 5 to facilitate the suction of the fumes accumulated inside the shielding plate 5 by the suction air pipes 407. Notch openings are provided on the front and back sides of the shielding plate 5 to facilitate the placement of long-strip parts on the workbench 1. Smoking assemblies 4 are provided on the left and right sides of the shielding plate 5. The number of the smoking assemblies 4 is two groups, and the two groups of smoking assemblies 4 are symmetrically arranged on the left and right sides of the shielding plate 5 respectively. The smoking assembly 4 includes a lifting seat 402. Above the workbench 1, there is a groove for placing the lifting seat 402. The lifting seat 402 is fixedly connected to the outer surface of the shielding plate 5. An electric push rod 403 is fixedly connected above the lifting seat 402. The electric push rod 403 is in an extended state under normal conditions. The electric push rod 403 is fixedly connected to the top inner surface of the sliding support frame 2. Above the workbench 1, two limiting sleeves 404 are fixedly connected. A sliding frame 405 is slidably connected to the inner surface of the limiting sleeve 404. The shape of the sliding frame 405 is U-shaped. A moving frame 406 is fixedly connected to the left end of the sliding frame 405. The moving frame 406 includes a base and a support rod, which are used to support the suction air pipe 407. A suction air pipe 407 is fixedly connected above the moving frame 406. The number of the suction air pipes 407 and the moving frames 406 is two. The position of the suction air pipe 407 corresponds to the through holes on the shielding plate 5. A spring 408 is fixedly connected between the inner surface of the sliding frame 405 and the limiting sleeve 404. A steel wire rope 409 is connected between the inner surface of the sliding frame 405 and the lifting seat 402 by a rope. A roller 410 is movably attached to the upper part of the steel wire rope 409. The outer ring of the roller 410 is in an inwardly concave structure, which is used for limiting the steel wire rope 409. The front and back sides of the roller 410 are rotatably connected to a first support piece 401, and the first support piece 401 is fixedly connected above the workbench 1. Suction fans 6 are fixedly installed on the left and right sides of the workbench 1. The suction fans 6 are used for suction. The suction fans 6 are connected to the suction air pipes 407 through pipelines. When the suction fans 6 are started, they can suck air through the suction air pipes 407. Support legs 7 are fixedly connected below the workbench 1. The number of the support legs 7 is four, which are respectively arranged at the four corners below the workbench 1.

[0026] When the above device is in specific use, first place the workpiece on the workbench 1, and then adjust the position of the laser welding head 3 by sliding the support frame 2 to facilitate laser welding of the workpiece. At this time, start the suction fan 6 so that it sucks the fumes generated during laser welding of the workpiece through the suction pipe 407. When welding small or long-shaped workpieces, first place the workpiece on the baffle 5 on the workbench 1 or at the notch on the baffle 5. At this time, start the electric push rod 403 to make it contract. The contraction of the electric push rod 403 will drive the lifting seat 402 to rise. The rise of the lifting seat 402 will pull the baffle 5 up from the workbench 1 to cover the area of the workpiece that needs to be welded. At this time, while the workpiece is being laser welded by the laser welding head 3, the baffle 5 will ensure that the fumes are relatively concentrated. At the same time, as the lifting seat 402 rises, the steel wire rope 409 will be pulled. The steel wire rope 409 will pull the sliding frame 405 towards the workpiece under the limitation of the roller 410 and the first support piece 401. At this time, the sliding frame 405 will slide towards the workpiece in the limit sleeve 404 and compress the spring 408. The sliding of the sliding frame 405 towards the workpiece will drive the moving frame 406 to move the suction pipe 407 towards the workpiece, making the suction pipe 407 closer to the workpiece. When the baffle 5 rises to the highest position, the suction pipe 407 will be close to and aligned with the through hole on the baffle 5, so as to facilitate approaching the welding area of the smaller workpiece to absorb the fumes. When taking out the workpiece, the electric push rod 403 is extended and reset to drive the lifting seat 402 to descend, so that the baffle 5 retracts into the workbench 1. At this time, as the lifting seat 402 descends, the steel wire rope 409 will be relaxed, and the compressed spring 408 will be elastically reset and drive the sliding frame 405 and the moving frame 406 to move the suction pipe 407 away from the workpiece, thereby expanding the tabletop above the workbench 1 and ensuring the flatness above the workbench 1 to facilitate taking and cleaning the workpiece on the tabletop.

[0027] Embodiment 2: Refer to Figures 2-8, a spray assembly 8 is provided above the shielding plate 5. The number of the spray assemblies 8 is two groups, which are symmetrically arranged on the left and right sides of the inner surface of the sliding support frame 2 respectively. The spray assembly 8 includes a support plate 801, and the support plate 801 is fixedly connected to the left side of the sliding support frame 2. A sponge pad 802 is fixedly connected to the left side of the support plate 801, and the sponge pad 802 covers the nozzle 805. A second support piece 803 is fixedly connected to the left side of the support plate 801. The number of the second support pieces 803 is two. The second support piece 803 located in the front is larger than the second support piece 803 located in the rear. A water inlet pipe 804 penetrates through and is rotatably connected to the front surface of the second support piece 803. A pipe rotary joint 812 is fixedly connected to the rear end of the water inlet pipe 804. The pipe rotary joint 812 is used to connect a water pipe to an external water source. A nozzle 805 is fixedly connected to the right side of the water inlet pipe 804. The nozzle 805 is in contact with the sponge pad 802 under normal conditions. A second gear 806 is fixedly connected to the front surface of the water inlet pipe 804. A first gear 807 is meshed below the second gear 806. The first gear 807 is rotatably connected to the front surface of the second support piece 803. A second hydraulic chamber 808 is fixedly connected to the left side of the sliding support frame 2. A second hydraulic rod 809 is slidably connected to the inner surface of the second hydraulic chamber 808. The second hydraulic rod 809 and the second hydraulic chamber 808 are slidably connected through a piston. The piston is arranged at the lower end of the second hydraulic rod 809. A connecting block 810 is fixedly connected to the upper end of the second hydraulic rod 809. A rack 811 is fixedly connected to the rear of the connecting block 810. The rack 811 is slidably connected to the left side of the sliding support frame 2. A slide rail is arranged on the sliding support frame 2 for the rack 811 to slide up and down. The rack 811 is meshed with the right side of the first gear 807, and the rack 811 does not contact the second gear 806. The spray assembly 8 further includes a mounting plate 813. The mounting plate 813 is hinged to the right side of the workbench 1, and the mounting plate 813 can swing for angle adjustment. A first hydraulic chamber 814 is fixedly connected above the mounting plate 813. A liquid is arranged in the first hydraulic chamber 814. The first hydraulic chamber 814 and the second hydraulic chamber 808 are connected by pipelines. The first hydraulic chamber 814 and the second hydraulic chamber 808 are connected and communicated through a hose. A first hydraulic rod 815 is slidably connected to the inner surface of the first hydraulic chamber 814. The first hydraulic rod 815 and the first hydraulic chamber 814 are slidably connected through a piston. The piston is arranged at the lower end of the first hydraulic rod 815. A connecting piece 816 is hinged to the upper end of the first hydraulic rod 815. The connecting piece 816 is fixedly connected to the right end of the sliding frame 405.

[0028] When the above-mentioned equipment is used, when the sliding frame 405 slides in the limit sleeve 404 toward the workpiece, it will drive the connecting piece 816 to move toward the workbench 1. At this time, as the connecting piece 816 moves toward the workbench 1, it will drive the first hydraulic rod 815, the first hydraulic chamber 814 and the mounting plate 813 to move from the inclined direction to the vertical direction. The first hydraulic rod 815 will also retract into the first hydraulic chamber 814 during the movement. The first hydraulic rod 815 will push the liquid in the first hydraulic chamber 814 to inject it into the second hydraulic chamber 808, thereby pushing the second hydraulic rod 809 in the second hydraulic chamber 808 to rise. The rising of the second hydraulic rod 809 will drive the connecting block 810 to rise. The rise will drive the rack 811 to slide upward, and the rack 811 will drive the first gear 807 to rotate counterclockwise. The counterclockwise rotation of the first gear 807 will drive the second gear 806 to rotate clockwise. The clockwise rotation of the second gear 806 will drive the water inlet pipe 804 and the nozzle 805 to rotate clockwise. The nozzle 805 is normally covered by the sponge pad 802 for protection and dust prevention. The clockwise rotation of the water inlet pipe 804 and the nozzle 805 will move the nozzle 805 away from the sponge pad 802 and point to the workpiece above the workbench 1. At this time, the water pipe is connected to the external water source through the pipe rotary joint 812 so that the nozzle 805 can spray water mist onto the workbench 1 and the workpiece above it to facilitate cooling and dust removal.

[0029] Example 3: See Figures 3-7 A water squeezing assembly 9 is provided below the water inlet pipe 804, and the water squeezing assembly 9 includes a squeezing block 901, and an arc-shaped protrusion is provided above the squeezing block 901, which is used to squeeze toward the sponge pad 802 to squeeze out the water in the sponge pad 802. The squeezing block 901 is fixedly connected to the top of the water inlet pipe 804, and a water receiving trough 902 is fixedly connected to the left side of the sliding support frame 2. The water receiving trough 902 is inclined and tilted backward. The water receiving trough 902 is provided below the sponge pad 802, and is used to receive the water squeezed out of the sponge pad 802. A water guide block 903 is fixedly connected below the support plate 801, and the water guide block 903 is triangular in shape. The water squeezing assembly 9 also includes a water tank 904, which is fixedly connected to the rear of the workbench 1. A water pipe 905 is connected between the water tank 904 and the rear end of the water receiving trough 902. The water pipe 905 is used to transport the water in the water receiving trough 902 to the water tank 904. A valve 10 is fixedly connected below the water tank 904, and the valve 10 is used to release the water in the water tank 904.

[0030] When the above-mentioned device is in specific use, a part of the water sprayed by the nozzle 805 will remain in the water inlet pipe 804 and on the outer surface of the nozzle 805. When the nozzle 805 stops working and is retracted again to the state covered by the sponge pad 802, these water droplets will be absorbed by the sponge pad 802. At this time, when the water inlet pipe 804 and the nozzle 805 rotate clockwise, they will also drive the extrusion block 901 to rotate clockwise. The clockwise rotation of the extrusion block 901 will squeeze the sponge pad 802 from top to bottom, thereby squeezing out the water in the sponge pad 802. The squeezed water will drip downwards and fall onto the water guide block 903 and be guided by it to flow into the water receiving tank 902. The inclined setting of the water receiving tank 902 will cause the water flowing into the water receiving tank 902 to flow backward and enter the water storage tank 904 through the water delivery pipe 905, so as to collect and store the excess water for recycling and utilization.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A smoke self-purifying laser welding device, comprising a workbench, a sliding support frame is arranged above the workbench, and a laser welding head is arranged on the front of the sliding support frame, characterized in that: A accommodating groove is provided above the workbench and a baffle plate is slidably connected to the inner surface of the accommodating groove, and a smoking assembly is arranged on the left and right sides of the baffle plate. The smoking assembly includes a lifting seat, the lifting seat is fixedly connected to the outer surface of the baffle plate, an electric push rod is fixedly connected to the top of the lifting seat, and the electric push rod is fixedly connected to the top of the inner surface of the sliding support frame. A limiting sleeve is fixedly connected to the top of the workbench, and a sliding frame is slidably connected to the inner surface of the limiting sleeve. The left end of the sliding frame is fixedly connected to the moving frame, and a suction pipe is fixedly connected to the top of the moving frame, a spring is fixedly connected between the inner surface of the sliding frame and the limiting sleeve, a steel wire rope is connected by a rope between the inner surface of the sliding frame and the lifting seat, and a roller is movably fitted above the steel wire rope, and the roller is rotatably connected to a first supporting piece on both front and rear sides, and the first supporting piece is fixedly connected to the top of the workbench.

2. The smoke self-purification laser welding device according to claim 1, characterized in that: Suction fans are fixedly installed on the left and right sides of the workbench, and the suction fans are connected to the suction pipes through pipelines.

3. The smoke self-purification laser welding device according to claim 1, characterized in that: Support legs are fixedly connected below the workbench.

4. The smoke self-purification laser welding device according to claim 1, characterized in that: A spray assembly is arranged above the guard plate, and the spray assembly includes a support plate, the support plate is fixedly connected to the left side of the sliding support frame, a sponge pad is fixedly connected to the left side of the support plate, a second support sheet is fixedly connected to the left side of the support plate, a water inlet pipe is penetrated through the front side of the second support sheet and is rotatably connected, a pipe rotating joint is fixedly connected to the rear end of the water inlet pipe, a spray head is fixedly connected to the right side of the water inlet pipe, a second gear is fixedly connected to the front side of the water inlet pipe, a first gear is meshed below the second gear, the first gear is rotatably connected to the front side of the second support sheet, a second hydraulic bin is fixedly connected to the left side of the sliding support frame, a second hydraulic rod is slidably connected to the inner surface of the second hydraulic bin, a connecting block is fixedly connected to the upper end of the second hydraulic rod, a rack is fixedly connected to the rear of the connecting block, the rack is slidably connected to the left side of the sliding support frame, and the rack is meshed with the right side of the first gear.

5. The smoke self-purification laser welding device according to claim 4, characterized in that: The spray assembly also includes a mounting plate, which is hinged to the right side of the workbench, a first hydraulic tank is fixedly connected above the mounting plate, the first hydraulic tank and the second hydraulic tank are connected by pipelines, a first hydraulic rod is slidably connected to the inner surface of the first hydraulic tank, a connecting plate is hinged at the upper end of the first hydraulic rod, and the connecting plate is fixedly connected to the right end of the sliding frame.

6. The smoke self-purifying laser welding device according to claim 4, characterized in that: A water squeezing assembly is arranged below the water inlet pipe, and the water squeezing assembly includes a squeezing block, and the squeezing block is fixedly connected to the top of the water inlet pipe. A water receiving trough is fixedly connected to the left side of the sliding support frame, and a water guide block is fixedly connected to the bottom of the support plate.

7. The smoke self-purifying laser welding device according to claim 6, characterized in that: The water squeezing assembly also includes a water storage tank, which is fixedly connected to the rear of the workbench, and a water delivery pipe is connected to the pipeline between the water storage tank and the rear end of the water receiving trough.

8. The smoke self-purifying laser welding device according to claim 7, characterized in that: A valve is fixedly connected below the water storage tank.

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