Water conservancy gate automatic laser welding rotary table with buffering function

Abstract

The invention relates to the technical field of welding equipment, and discloses a water conservancy gate automatic laser welding rotary table with a buffering function, the water conservancy gate automatic laser welding rotary table comprises a welding table and a welding mechanism, a three-jaw chuck is arranged on the welding table, the three-jaw chuck is used for clamping water conservancy gate blades, and the welding mechanism comprises a shell and a laser welding head. A plurality of touch rods are arranged on the laser welding head in the circumferential direction. The welding mechanism further comprises a bearing assembly and a transmission assembly, the bearing assembly comprises a connecting shaft, the transmission assembly comprises a fixing seat arranged on the shell, a first lifting seat is arranged on the fixing seat in a sliding mode, and the first lifting seat is connected with the connecting shaft. According to the water conservancy gate automatic laser welding rotary table with the buffering function, the device which can adapt to the shape of the curved surface of a blade and achieve high-quality automatic surfacing operation is provided, and the problems that in the prior art, surfacing layers are uneven in quality and depend on manpower are solved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to an automatic laser welding turntable for hydraulic gates with a buffer function. Background Technology

[0002] Hydraulic gates are control facilities used to close and open water discharge channels. They can be used to intercept water flow, control water levels, regulate flow, and discharge silt and floating debris. Because the immense water pressure can cause significant impact on the gate, negatively affecting its sealing performance, hydraulic gates also possess a buffering function for the water flow. For example, the hydraulic gate with patent number CN222139942U uses multiple rotating rollers and blades to absorb some of the impact force of the water flow in the channel body, slowing down the water flow velocity and buffering the water flow, thus protecting the gate.

[0003] The manufacturing of hydraulic gate blades requires the use of welding technology. On the one hand, because hydraulic gate blades are subjected to the scouring and cavitation of high-speed sand-laden water flow for a long time, their surfaces (especially the water-facing side and edges) are extremely prone to wear and corrosion. In order to extend their service life, a layer of wear-resistant and corrosion-resistant alloy material (such as stainless steel hard alloy) is usually welded on these key parts. On the other hand, for large hydraulic gate blades, due to their huge size, they often need to be welded together from multiple steel plates. These welds are mostly long welds, curved welds, or even three-dimensional space welds.

[0004] In existing technologies, manual welding or large-scale specialized welding equipment are commonly used. Manual welding suffers from inconsistent quality and low efficiency, while large-scale specialized equipment cannot flexibly adapt to the complex curved shape of the blades, resulting in uneven weld overlay thickness and poor fusion. Summary of the Invention

[0005] This invention provides an automatic laser welding turntable for hydraulic gates with a buffer function. It has the beneficial effects of being able to adapt to the curved surface shape of the blades and realize high-quality automated surfacing welding operations. It solves the problems mentioned in the background art, where the prior art mostly uses manual welding or large-scale special surfacing welding equipment to weld hydraulic gate blades. Manual welding has unstable quality and low efficiency, while large-scale special equipment cannot flexibly adapt to the complex curved surface shape of the blades, resulting in uneven surfacing layer thickness and poor fusion.

[0006] The present invention provides the following technical solution: an automatic laser welding turntable for hydraulic gates with buffer function, including a welding table and a welding mechanism. The welding table is provided with a three-jaw chuck for clamping hydraulic gate blades. The welding mechanism includes a housing and a laser welding head, and the laser welding head is provided with several contact rods circumferentially. The welding mechanism further includes a bearing component and a transmission component. The bearing component includes a connecting shaft, and the transmission component includes a fixed seat disposed on the housing. A first lifting seat is slidably disposed on the fixed seat. The first lifting seat is connected to the connecting shaft. A spherical component is rotatably disposed inside the first lifting seat, and the laser welding head is connected to the spherical component. The angle of the laser welding head is adjusted by sliding the first lifting seat relative to the fixed seat and by rotating the spherical component relative to the first lifting seat.

[0007] As an optional solution of the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the welding table is provided with a screw conveyor device, the screw conveyor device is provided with a movable seat, the housing is provided on the movable seat, and the movable seat is controlled to move along the axial direction of the hydraulic gate blade by the screw conveyor device. The welding platform is also equipped with a first motor, and a pulley is provided on the output shaft of the first motor. The pulley is connected to the three-jaw chuck via a transmission belt, and the rotation of the hydraulic gate blades is controlled by the first motor.

[0008] As an optional solution for the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the bearing component further includes a second motor disposed on the housing, a turntable disposed on the output shaft of the second motor, and the connecting shaft slidably connected to the first lifting seat.

[0009] As an optional solution of the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, wherein: the first lifting seat is elastically connected to the fixed seat through a first spring, and the spherical component is elastically connected to the first lifting seat through a second spring; The spherical component is provided with a limiting block, and the first lifting seat is provided with a limiting groove, and the limiting block is slidably connected in the limiting groove.

[0010] As an optional solution for the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the welding mechanism further includes an airflow protection component. The airflow protection component includes a cylinder disposed on the housing, and a plurality of arc-shaped plates are slidably disposed on the cylinder. Each of the arc-shaped plates is provided with an air outlet, and the arc-shaped plates are elastically connected to the cylinder by a plurality of third springs.

[0011] As an optional solution for the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the airflow protection component further includes a cavity opened inside the cylinder, the cavity being connected to several air outlets, and a micro air pump being provided on the cylinder, the micro air pump being connected to the cavity through a connecting pipe.

[0012] As an optional solution for the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the welding mechanism further includes a lifting assembly, which includes a second lifting seat slidably disposed on the housing, a connecting shaft disposed on the second lifting seat, a guide block disposed on the second lifting seat, a guide groove being provided on the turntable, and the guide block being slidably connected within the guide groove.

[0013] As an optional solution for the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the guide groove includes a first arc segment and a second arc segment, the height of the first arc segment is lower than that of the second arc segment, and the beginning and end of the first arc segment and the second arc segment are connected to each other.

[0014] As an optional solution for the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the welding mechanism further includes a flow regulating component. The flow regulating component is used to regulate the airflow size of a plurality of air outlets. The flow regulating component includes a valve plate slidably disposed inside the cylinder. A lifting ring is slidably disposed on the cylinder. A connecting ring is disposed on the laser welding head. The connecting ring is rotatably connected to the lifting ring.

[0015] As an optional solution for the automatic laser welding turntable for hydraulic gates with buffer function described in this invention, the flow regulation component further includes a rotating rod rotatably mounted on the cylinder, a connecting rod on the rotating rod, and sliding rods at both ends of the connecting rod. The lifting ring and the valve plate are each provided with a connecting seat, and each of the two connecting seats has a sliding groove. The two sliding rods are slidably connected to the two sliding grooves respectively.

[0016] The present invention has the following beneficial effects: 1. This automatic laser welding turntable for hydraulic gates with a buffer function, through multiple contact rods set around the laser welding head and an adaptive suspension mechanism composed of a spherical component, a lifting seat, and springs, achieves real-time dynamic contouring of the complex curved surface of the hydraulic gate blades by the laser welding head. This ensures that the laser beam remains perpendicular to the local surface of the workpiece and maintains a constant focal length, solving the process problems of uneven weld bead, insufficient penetration, and poor fusion caused by improper angles and distances during automated welding on curved surfaces, significantly improving the quality and consistency of the weld layer.

[0017] 2. The automatic laser welding turntable for hydraulic gates with buffer function has multiple independently lifting arc plates that work with springs to form a conformal sealed air curtain around the welding torch, which greatly improves the utilization rate of the protective gas.

[0018] 3. This automatic laser welding turntable for hydraulic gates with buffer function can automatically adjust the opening of the gas valve plate through a mechanical linkage mechanism when the welding head rises and falls due to the undulation of the workpiece surface. This enables intelligent increase or decrease of the protective gas flow, ensuring effective gas protection for the molten pool at different welding heights, enhancing the stability of the welding process and suppressing oxidation defects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the welding mechanism in this invention.

[0021] Figure 3 This is a cross-sectional view of the welding mechanism in this invention.

[0022] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0024] Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure at point C.

[0025] Figure 7 This is an exploded structural diagram of the transmission component in this invention.

[0026] Figure 8 This is a schematic diagram of the arc-shaped plate in this invention.

[0027] Figure 9 This is an exploded view of the flow regulation component in this invention.

[0028] Figure 10 This is an exploded structural diagram of the load-bearing component and the lifting component in this invention.

[0029] In the diagram: 100, welding table; 110, three-jaw chuck; 120, hydraulic gate blade; 130, screw conveyor; 140, moving seat; 150, first motor; 160, pulley; 170, transmission belt; 200, welding mechanism; 210, housing; 220, laser welding head; 230, contact rod; 240, load-bearing component; 241, connecting shaft; 242, second motor; 243, turntable; 250, transmission component; 251, fixed seat; 252, first lifting seat; 253, spherical component; 254, first spring; 255, second spring; 256, limiting groove; 257. Limiting block; 260. Airflow protection component; 261. Cylinder; 262. Arc plate; 263. Air outlet; 264. Third spring; 265. Cavity; 266. Miniature air pump; 267. Connecting pipe; 270. Lifting component; 271. Second lifting seat; 272. Guide block; 273. Guide groove; 2731. First arc segment; 2732. Second arc segment; 280. Flow regulating component; 281. Valve plate; 282. Lifting ring; 283. Connecting ring; 284. Rotating rod; 285. Connecting rod; 286. Connecting seat; 287. Slide rod; 288. Slide groove. Detailed Implementation

[0030] 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.

[0031] Example 1 Please see Figures 1-10 An automatic laser welding turntable for hydraulic gates with a buffer function includes a welding table 100 and a welding mechanism 200. The welding table 100 is equipped with a three-jaw chuck 110 for holding hydraulic gate blades 120. The welding mechanism 200 includes a housing 210 and a laser welding head 220. The laser welding head 220 is circumferentially equipped with several contact rods 230.

[0032] The welding mechanism 200 also includes a bearing component 240 and a transmission component 250. The bearing component 240 includes a connecting shaft 241. The transmission component 250 includes a fixed seat 251 disposed on the housing 210. A first lifting seat 252 is slidably disposed on the fixed seat 251. The first lifting seat 252 is connected to the connecting shaft 241. A spherical component 253 is rotatably disposed inside the first lifting seat 252. The laser welding head 220 is connected to the spherical component 253.

[0033] The angle of the laser welding head 220 is adjusted by sliding the first lifting seat 252 relative to the fixed seat 251 and by rotating the spherical part 253 relative to the first lifting seat 252.

[0034] A screw conveyor 130 is provided on the welding table 100, and a movable seat 140 is provided on the screw conveyor 130. The housing 210 is located on the movable seat 140. The movable seat 140 is controlled to move along the axis of the hydraulic gate blade 120 by the screw conveyor 130.

[0035] The welding table 100 is also equipped with a first motor 150. The output shaft of the first motor 150 is equipped with a pulley 160. The pulley 160 is connected to the three-jaw chuck 110 through a transmission belt 170. The first motor 150 controls the rotation of the hydraulic gate blade 120.

[0036] The support assembly 240 also includes a second motor 242 disposed on the housing 210, and the output shaft of the second motor 242 is provided with a turntable 243 and a connecting shaft 241 that is slidably connected to the first lifting seat 252.

[0037] The first lifting seat 252 is elastically connected to the fixed seat 251 via the first spring 254, and the spherical part 253 is elastically connected to the first lifting seat 252 via the second spring 255.

[0038] A limiting block 257 is provided on the spherical part 253, and a limiting groove 256 is opened in the first lifting seat 252. The limiting block 257 is slidably connected in the limiting groove 256.

[0039] In this embodiment, the hydraulic gate blade 120 is used for the buffering function of the hydraulic gate. Several hydraulic gate blades 120 are circumferentially mounted on a shaft to form a complete blade surface.

[0040] During welding, the three-jaw chuck 110 can drive the three jaws to fix the hydraulic gate blade 120 by electric or pneumatic means. According to the principles of fluid mechanics, in order to improve the buffering function of the hydraulic gate against water flow, the surface of the hydraulic gate blade 120 is designed with a complex arc shape, and the curvature is different at different points on both sides of the surface. Traditional automatic laser welding equipment is difficult to flexibly adapt to the complex curved shape of the blade, which will lead to uneven weld overlay thickness and poor fusion.

[0041] The screw conveyor 130 can be driven by a motor to rotate the screw, and the screw drives the screw nut to move along the length of the hydraulic gate blade 120. The movable seat 140 is installed on the screw nut.

[0042] After the equipment is started, the first motor 150 drives the three-jaw chuck 110 and the blade 120 to rotate slowly via belt drive. At the same time, the lead screw conveyor 130 is activated, driving the moving seat 140 and the entire welding mechanism 200 to move along the axis of the blade 120. The combination of these two movements causes the laser welding head 220 to form a preset welding path relative to the blade surface.

[0043] As welding progresses, the circumferentially arranged contact rods 230 of the laser welding head 220 will contact the surface of the blade 120 before the welding process begins. Because the blade surface is a complex curved surface, the contact height of each contact rod 230 is different. This uneven contact force is transmitted to all components of the welding mechanism 200, achieving the following effect.

[0044] Angle Adaptive: When the local curved surface forces the laser welding head 220 to lift to one side, the spherical part 253 will rotate relative to the first lifting seat 252, thereby automatically adjusting the pitch angle and yaw angle of the laser welding head 220 so that the laser beam is always perpendicular to the local surface of the workpiece.

[0045] Height buffer: When the entire laser welding head 220 is lifted up due to the curved surface, the first lifting seat 252 will compress the first spring 254 and slide upward relative to the fixed seat 251, providing a buffer stroke for the Z-axis.

[0046] Constant pressure suspension: The first spring 254 and the second spring 255 work together to ensure that the laser welding head 220 can always be "suspended" on the blade surface with a constant slight pressure after adaptive adjustment, maintaining the optimal laser focusing distance (defocusing amount). The limiting block 257 and the limiting groove 256 prevent the spherical part 253 from rotating excessively and detaching.

[0047] Through adaptive adjustment, the stability of the weld pool and the consistency of the weld bead formation are ensured, fundamentally solving the process problems caused by improper angles and distances when automatically welding on curved surfaces.

[0048] It should be noted that the three-jaw chuck 110 and the lead screw conveyor 130 are conventional technical means, and their specific structures and working principles will not be described in detail.

[0049] Example 2 Please see Figures 3-9 The welding mechanism 200 also includes an airflow protection component 260, which includes a cylinder 261 disposed on the housing 210. Several arc-shaped plates 262 are slidably disposed on the cylinder 261. Each of the arc-shaped plates 262 has an air outlet 263. The arc-shaped plates 262 are elastically connected to the cylinder 261 by several third springs 264.

[0050] The airflow protection component 260 also includes a cavity 265 opened in the cylinder 261. The cavity 265 is connected to a number of air outlets 263. A micro air pump 266 is provided on the cylinder 261. The micro air pump 266 is connected to the cavity 265 through a connecting pipe 267.

[0051] In this embodiment: the metal vapor and shielding gas generated during the laser welding process are ionized under the action of the laser, thereby forming plasma above the weld. Plasma absorbs, refracts, and scatters the laser beam; therefore, the plasma above the weld weakens the laser energy reaching the workpiece and affects the focusing effect of the beam, which is detrimental to welding.

[0052] By incorporating an airflow protection component 260, this device can blow air to the side of the laser welding head 220 to remove or weaken the plasma.

[0053] First, the micro air pump 266 injects protective gas (such as argon) into the cavity 265 through the connecting pipe 267, and then enters each air outlet 263 from the cavity 265. The tail of the air outlet 263 is sloping downward, and the airflow will be sprayed from the tail end of the air outlet 263 onto the surface of the hydraulic gate blade 120.

[0054] Furthermore, several arc-shaped plates 262 form a ring. Each arc-shaped plate 262 can be raised and lowered independently. When an arc-shaped plate 262 contacts the surface of the hydraulic gate blade 120, it compresses the third spring 264 to cause it to rise or fall. The multiple arc-shaped plates 262 arranged in a circle can control the airflow within the welding range of the laser welding head 220 as much as possible, thereby improving utilization.

[0055] Example 3 Please see Figures 3-10 The welding mechanism 200 also includes a lifting assembly 270, which includes a second lifting seat 271 slidably disposed on the housing 210, a connecting shaft 241 disposed on the second lifting seat 271, a guide block 272 disposed on the second lifting seat 271, a guide groove 273 provided on the turntable 243, and the guide block 272 slidably connected in the guide groove 273.

[0056] The guide groove 273 includes a first arc-shaped segment 2731 and a second arc-shaped segment 2732. The height of the first arc-shaped segment 2731 is lower than that of the second arc-shaped segment 2732. The first arc-shaped segment 2731 and the second arc-shaped segment 2732 are connected end to end.

[0057] In this embodiment: the second motor 242 drives the turntable 243 to rotate. As the turntable 243 rotates, the guide block 272 slides from the second arc segment 2732 to the first arc segment 2731, causing the guide block 272 and the second lifting seat 271 to descend. When the guide block 272 slides from the first arc segment 2731 to the second arc segment 2732, the guide block 272 and the second lifting seat 271 rise. The second lifting seat 271 drives the connecting shaft 241 to rise and fall.

[0058] Before welding begins, the operator or vision system can control the motor 242 to drive the laser welding head 220 to move up and down, find the optimal laser focus position and lock it.

[0059] Adaptive fine-tuning: During the welding process, when encountering minor bumps or depressions, the first spring 254, the second spring 255, and the spherical component 253 enable the laser welding head 220 to quickly and slightly buffer and adapt its angle. Meanwhile, the height of the entire laser welding head 220 is kept stable by the motor 242, thereby ensuring that the defocusing amount remains basically unchanged.

[0060] Example 4 Please see Figures 3-9 The welding mechanism 200 also includes a flow regulating component 280, which is used to regulate the airflow size of a plurality of air outlets 263. The flow regulating component 280 includes a valve plate 281 slidably disposed in a cylinder 261, a lifting ring 282 slidably disposed on the cylinder 261, and a connecting ring 283 disposed on the laser welding head 220, which is rotatably connected to the lifting ring 282.

[0061] The flow regulating assembly 280 also includes a rotating rod 284 rotatably mounted on the cylinder 261. A connecting rod 285 is provided on the rotating rod 284. Slide rods 287 are provided at both ends of the connecting rod 285. Connecting seats 286 are provided on the lifting ring 282 and the valve plate 281. Slide grooves 288 are provided on both connecting seats 286. The two slide rods 287 are slidably connected to the two slide grooves 288 respectively.

[0062] In this embodiment: when the laser welding head 220 is close to the normal welding plane, the standard flow rate of shielding gas can effectively cover the molten pool and prevent oxidation. When welding to the reinforcing ribs on the blade, the worn protrusions, or the weld joint, the laser welding head 220 will be "lifted" higher due to contact with the rod 230. At this time, the distance between the weld point and the vent 263 increases, and the standard gas flow will diffuse, resulting in a weakened protective effect. Therefore, it is necessary to increase the gas flow rate and velocity to ensure that the molten pool can still be effectively covered and a good protective effect can be maintained even with the increased distance.

[0063] like Figure 6As shown, taking the flow regulation assembly 280 located on the right as an example, when the laser welding head 220 rises due to contact with the protrusion, it will drive the connecting ring 283 and the lifting ring 282 to rise. The connecting seat 286 on the lifting ring 282 rises, causing the left slide rod 287 to slide to the left relative to the connecting seat 286. At this time, the connecting rod 285 and the rotating rod 284 rotate clockwise, and the right slide rod 287 slides to the right relative to the connecting seat 286, causing the right connecting seat 286 and the valve plate 281 to fall. The fall of the valve plate 281 increases the channel area between the cavity 265 and the right air outlet 263, thereby increasing the flow rate.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic laser welding turntable for hydraulic gates with a buffer function, comprising a welding table (100) and a welding mechanism (200), characterized in that: The welding table (100) is provided with a three-jaw chuck (110), which is used to clamp the hydraulic gate blade (120). The welding mechanism (200) includes a housing (210) and a laser welding head (220). The laser welding head (220) is provided with several contact rods (230) in the circumferential direction. The welding mechanism (200) further includes a bearing component (240) and a transmission component (250). The bearing component (240) includes a connecting shaft (241). The transmission component (250) includes a fixed seat (251) disposed on the housing (210). A first lifting seat (252) is slidably disposed on the fixed seat (251). The first lifting seat (252) is connected to the connecting shaft (241). A spherical component (253) is rotatably disposed inside the first lifting seat (252). The laser welding head (220) is connected to the spherical component (253). The angle of the laser welding head (220) is adjusted by sliding the first lifting seat (252) relative to the fixed seat (251) and by rotating the spherical part (253) relative to the first lifting seat (252).

2. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 1, characterized in that: The welding table (100) is provided with a screw conveyor (130), and the screw conveyor (130) is provided with a movable seat (140). The housing (210) is provided on the movable seat (140). The movable seat (140) is controlled by the screw conveyor (130) to move along the axial direction of the hydraulic gate blade (120). The welding table (100) is also equipped with a first motor (150), and a pulley (160) is provided on the output shaft of the first motor (150). The pulley (160) is connected to the three-jaw chuck (110) through a transmission belt (170), and the first motor (150) controls the rotation of the hydraulic gate blade (120).

3. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 1, characterized in that: The bearing assembly (240) also includes a second motor (242) disposed on the housing (210), and a turntable (243) is disposed on the output shaft of the second motor (242). The connecting shaft (241) is slidably connected to the first lifting seat (252).

4. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 1, characterized in that: The first lifting seat (252) is elastically connected to the fixed seat (251) via a first spring (254), and the spherical part (253) is elastically connected to the first lifting seat (252) via a second spring (255). The spherical component (253) is provided with a limiting block (257), and the first lifting seat (252) is provided with a limiting groove (256). The limiting block (257) is slidably connected to the limiting groove (256).

5. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 1, characterized in that: The welding mechanism (200) further includes an airflow protection component (260), which includes a cylinder (261) disposed on the housing (210). A plurality of arc-shaped plates (262) are slidably disposed on the cylinder (261), and each of the arc-shaped plates (262) is provided with an air outlet (263). The arc-shaped plates (262) are elastically connected to the cylinder (261) by a plurality of third springs (264).

6. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 5, characterized in that: The airflow protection component (260) also includes a cavity (265) opened in the cylinder (261), the cavity (265) is connected to a plurality of air outlets (263), and a micro air pump (266) is provided on the cylinder (261), the micro air pump (266) is connected to the cavity (265) through a connecting pipe (267).

7. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 3, characterized in that: The welding mechanism (200) further includes a lifting assembly (270), which includes a second lifting seat (271) slidably disposed on the housing (210), a connecting shaft (241) disposed on the second lifting seat (271), a guide block (272) disposed on the second lifting seat (271), and a guide groove (273) provided on the turntable (243), and the guide block (272) slidably connected in the guide groove (273).

8. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 7, characterized in that: The guide groove (273) includes a first arc segment (2731) and a second arc segment (2732). The height of the first arc segment (2731) is lower than that of the second arc segment (2732). The first arc segment (2731) and the second arc segment (2732) are connected end to end.

9. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 6, characterized in that: The welding mechanism (200) further includes a flow regulating component (280), which is used to regulate the airflow of a plurality of the air outlets (263). The flow regulating component (280) includes a valve plate (281) slidably disposed in the cylinder (261). A lifting ring (282) is slidably disposed on the cylinder (261). A connecting ring (283) is disposed on the laser welding head (220). The connecting ring (283) is rotatably connected to the lifting ring (282).

10. The automatic laser welding turntable for hydraulic gates with buffer function according to claim 9, characterized in that: The flow regulating component (280) further includes a rotating rod (284) rotatably mounted on the cylinder (261). A connecting rod (285) is provided on the rotating rod (284). Slide rods (287) are provided at both ends of the connecting rod (285). A connecting seat (286) is provided on both the lifting ring (282) and the valve plate (281). A sliding groove (288) is provided on both connecting seats (286). The two slide rods (287) are slidably connected in the two sliding grooves (288).

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