Laser welding equipment for pipeline welding

Abstract

The invention relates to the technical field of laser welding, and discloses laser welding equipment for pipeline welding, which comprises a workbench, a fixing mechanism is mounted on one side of the outer wall of the workbench and used for fixing to-be-welded pipelines with different diameters, and a cooling mechanism is mounted at one end of the interior of the fixing mechanism and used for cooling the to-be-welded pipelines with different diameters. The cooling mechanism is used for rapidly cooling a welded pipeline, and the output end of the cooling mechanism communicates with an air curtain mechanism which is used for forming air curtain protection for equipment. A unique gear-rack transmission design is adopted by the fixing mechanism, motor driving is matched, an operation instruction can be quickly responded, and when facing to-be-welded pipelines with different diameters, a plurality of racks work cooperatively to form an annular clamping structure to adapt to the outline of the pipelines, and it is ensured that the pipelines are kept stable in the whole welding process. And the internal rubber material buffers the clamping force, the pipeline is prevented from being damaged, displacement deviation in the welding process is effectively prevented, and a solid foundation is laid for subsequent welding operation.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, in particular to laser welding equipment for pipeline welding. Background Art

[0002] In the process of industrial development, pipeline welding has always been an indispensable key process in many fields, and is widely used in industries such as petrochemicals, natural gas transportation, urban water supply and drainage, and electricity. Although traditional pipeline welding methods, such as manual arc welding and gas shielded welding, have played an important role in a certain historical period, their drawbacks have become increasingly prominent as the times progress.

[0003] Manual arc welding is highly dependent on the welder's operating skills and experience. The welding quality varies greatly, the appearance and internal quality of the weld fluctuate greatly, and defects such as pores, slag inclusions, and incomplete penetration are prone to occur. Moreover, its welding speed is slow and inefficient, and in large-scale pipeline projects, it consumes a lot of manpower, material resources and time costs. In addition, welders are exposed to strong light, high temperature and harmful smoke for a long time, which poses a high risk to occupational health.

[0004] Although gas shielded welding has improved welding quality to a certain extent, by isolating the air with shielding gas and reducing weld oxidation, the equipment is relatively complex and the operation is difficult. It requires high precision control of welding parameters and can cause welding problems if you are not careful. In addition, the cost of consumables is high, and the continuous supply of shielding gas increases operating costs.

[0005] At the same time, modern industry has brought new challenges to the quality, efficiency and intelligence of pipeline welding. In the field of petrochemicals, high-pressure and high-temperature pipelines require welds with extremely high strength and density, and no defects are allowed, otherwise serious leakage accidents will occur; natural gas transmission pipelines need to be welded efficiently and quickly to meet the needs of long-distance laying and reduce construction delays; urban water supply and drainage pipelines are frequently constructed, and there is an urgent need for fast and reliable welding technology that can adapt to complex construction sites. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a laser welding device for pipeline welding, which solves the problem of high occupational health risks caused by welders being exposed to strong light, high temperature and harmful smoke for a long time.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser welding device for pipeline welding, comprising a workbench, a fixing mechanism is installed on one side of the outer wall of the workbench, which is used to fix pipelines of different diameters to be welded, a cooling mechanism is installed on one end inside the fixing mechanism, which is used to quickly cool the pipeline after welding, and the output end of the cooling mechanism is connected to an air curtain mechanism, which is used to form an air curtain protection for the equipment.

[0008] Preferably, the fixing mechanism includes a support frame, which is installed on one side of the outer wall of the workbench, and the support frame is rotatably connected to a gear frame inside. A limit frame is installed on one side of the outer wall of the support frame, and a rack is slidably connected to the inside of the limit frame. The top of the support frame is fixedly connected to a connecting column, an extension rod is installed on one end of the connecting column, and one end of the short column is fixedly connected to the bottom of the extension rod, and a motor is installed on the other end of the short column, and the output end of the motor is fixedly connected to a driving wheel.

[0009] Preferably, the cooling mechanism includes a water cooling box, which is installed on one side of the outer wall of the workbench. An automatic pump is installed on one side of the outer wall of the water cooling box. The input end of the automatic pump is connected to the water cooling box, and the output end of the automatic pump is connected to one end of a cooling pipe, and the other end of the cooling pipe is connected to a water cooling ring.

[0010] Preferably, the air curtain mechanism comprises a gas supply pump, which is installed on one side of the outer wall of the workbench, the protective gas is input into the input end of the gas supply pump, and one end of the nozzle is installed at the output end of the gas supply pump.

[0011] Preferably, the gear rack is meshed with the driving wheel, and the driving wheel is meshed with the rack.

[0012] Preferably, a connecting ring is installed at one end of the rack, and a rubber material is provided inside the connecting ring.

[0013] Preferably, the water cooling ring is made of a soft material and is installed on one side of the outer wall of the connecting ring.

[0014] Preferably, the other end of the nozzle is connected to a curtain frame.

[0015] Preferably, a water level monitor is installed inside the water cooling box.

[0016] The present invention provides a laser welding device for pipeline welding, which has the following beneficial effects: 1. The fixing mechanism of the present invention adopts a unique gear-rack transmission design, which can respond to operation instructions quickly with the motor drive. When facing pipes of different diameters to be welded, multiple racks work together to form an annular clamping structure to adapt to the pipe contour and ensure that the pipe remains stable and motionless during the welding process. The internal rubber material not only buffers the clamping force to avoid damage to the pipe, but also increases the friction, effectively preventing displacement deviation during welding, and laying a solid foundation for subsequent welding operations.

[0017] 2. The present invention mainly uses water cooling. The water cooling box, automatic pump, cooling pipe and water cooling ring constitute an efficient cooling system. After welding is completed, the automatic pump can start quickly to accurately deliver cooling water to the water cooling ring close to the pipeline. The soft material of the water cooling ring fits tightly to the outer wall of the pipeline, with a large contact area and high heat transfer efficiency. It can quickly take away the heat of the weld and promote the rapid cooling and solidification of the weld. This not only reduces the damage of thermal stress to the weld joint and effectively reduces the risk of cracks, but also shortens the cycle of the entire welding process and improves production efficiency.

[0018] 3. The air curtain mechanism of the present invention plays a key protective role in the welding process. The gas supply pump pressurizes and delivers the inert gas, which is sprayed out through the nozzle to form a stable air curtain at the curtain frame, covering the welding area and key parts of the equipment, and blocking the invasion of impurities such as metal vapor and spatter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of the laser welding device of the present invention; Figure 2 is a schematic diagram of the laser welding equipment in the present invention; Figure 3 This is a diagram showing the laser welding equipment in the present invention; Figure 4 An exploded view of the laser welding device of the present invention; Figure 5 is a schematic diagram of the fixing mechanism in the present invention; Figure 6 for Figure 5 A in the enlarged view; Figure 7 It is an exploded view of the fixing mechanism in the present invention; Figure 8 for Figure 7 Enlarged view of point B in .

[0020] Among them, 1. workbench; 2. fixing mechanism; 201. support frame; 202. gear frame; 203. limit frame; 204. rack; 205. connecting column; 206. extension rod; 207. short column; 208. motor; 209. driving wheel; 210. connecting ring; 3. cooling mechanism; 301. water cooling box; 302. automatic pump; 303. cooling pipe; 304. water cooling ring; 305. water level monitor; 4. air curtain mechanism; 401. gas supply pump; 402. nozzle; 403. curtain frame. DETAILED DESCRIPTION

[0021] 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.

[0022] Please see attached Figure 1 - Attachment Figure 8 The embodiment of the present invention provides a laser welding device for pipeline welding, comprising a workbench 1, a fixing mechanism 2 is installed on one side of the outer wall of the workbench 1, which is used to fix pipelines of different diameters to be welded, a cooling mechanism 3 is installed on one end of the inner part of the fixing mechanism 2, which is used to quickly cool the pipeline after welding, and an output end of the cooling mechanism 3 is connected to an air curtain mechanism 4, which is used to form an air curtain protection for the equipment; The fixing mechanism 2 includes a support frame 201, which is mounted on one side of the outer wall of the workbench 1. The support frame 201 is rotatably connected to a gear frame 202 inside. A limit frame 203 is mounted on one side of the outer wall of the support frame 201. A rack 204 is slidably connected inside the limit frame 203. A connecting column 205 is fixedly connected to the top of the support frame 201. An extension rod 206 is mounted on one end of the connecting column 205. One end of the short column 207 is fixedly connected to the bottom of the extension rod 206. A motor 208 is mounted on the other end of the short column 207. The output end of the motor 208 is fixedly connected to a driving wheel 209. The gear rack 202 is meshed with the driving wheel 209 , and the driving wheel 209 is meshed with the rack 204 .

[0023] A connecting ring 210 is installed at one end of the rack 204, and a rubber material is provided inside the connecting ring 210; Specifically, when it is necessary to fix the pipe to be welded, the motor 208 is started, and the motor 208 drives the driving wheel 209 to rotate. Since the gear frame 202 is meshed with the driving wheel 209, the rotation of the driving wheel 209 will drive the gear frame 202 to rotate synchronously inside the support frame 201. At the same time, the driving wheel 209 is meshed with the rack 204. During the rotation of the gear frame 202, the rack 204 will make a linear sliding motion under the restriction of the limit frame 203, thereby realizing linear displacement. Multiple racks 204 are linearly displaced at the same time, forming an annular clamping structure with the center point of the gear frame 202 as the center. The connecting ring 210 moves with the rack 204. The rubber material inside it can play a role in buffering and increasing friction, and can adapt to the outer surface contour of pipes of different diameters, fit the pipe tightly, and ensure that the pipe will not be displaced during the welding process, providing a stable foundation for subsequent precise welding.

[0024] The cooling mechanism 3 includes a water cooling box 301, which is installed on one side of the outer wall of the workbench 1. An automatic pump 302 is installed on one side of the outer wall of the water cooling box 301. The input end of the automatic pump 302 is connected to the water cooling box 301, and the output end of the automatic pump 302 is connected to one end of a cooling pipe 303, and the other end of the cooling pipe 303 is connected to a water cooling ring 304. Specifically, after welding is completed, in order to quickly cool the high-temperature welding parts, cooling water is pre-stored in the water cooling box 301, and the automatic pump 302 is started, which draws the cooling water in the water cooling box 301 and transports it to the water cooling ring 304 through the cooling pipe 303. The water cooling ring 304, due to its soft material, can fit tightly on the outer wall of the pipe fixed by the connecting ring 210, increase the contact area with the pipe, and improve the cooling efficiency. The cooling water circulates in the water cooling ring 304, taking away the heat on the pipe, accelerating the cooling and solidification of the weld, which helps to improve the quality of the welded joint, reduce the influence of thermal stress on the weld, and avoid defects such as cracks.

[0025] The air curtain mechanism 4 includes a gas supply pump 401, which is installed on one side of the outer wall of the workbench 1. The input end of the gas supply pump 401 is input with protective gas, and the output end of the gas supply pump 401 is installed with one end of the nozzle 402; Specifically, during the welding process, the gas supply pump 401 works continuously to pressurize the input inert gas and deliver it to the nozzle 402. The nozzle 402 sprays the gas evenly, and the gas forms a stable gas curtain at the curtain frame 403 connected to the other end of the nozzle 402. This gas curtain covers the welding area and key parts of the equipment, such as in front of optical elements and electrical components, and effectively blocks impurities such as metal vapor and spatter generated during the welding process to prevent them from adhering to the equipment and causing damage, thereby ensuring the normal operation of the equipment and extending the service life of the equipment. At the same time, it is also beneficial to maintain the cleanliness of the welding area and ensure the welding quality.

[0026] The water cooling ring 304 is made of soft material and is installed on one side of the outer wall of the connecting ring 210 .

[0027] The other end of the nozzle 402 is connected to the curtain frame 403 .

[0028] A water level monitor 305 is installed inside the water cooling box 301; Specifically, the water level monitor 305 monitors the water level in the water cooling box 301 in real time. During the welding process, if the cooling water level drops due to evaporation, leakage, etc., once the water level is lower than the set safety threshold, the water level monitor 305 will immediately send out an alarm signal to remind the operator to replenish the cooling water in time to avoid the automatic pump 302 from idling and being damaged due to lack of water, or the poor cooling effect affecting the welding quality. Through this real-time monitoring and early warning mechanism, the stable operation of the cooling system is guaranteed, and the reliable operation of the entire welding equipment is guaranteed.

[0029] Working principle: The embodiment of the present invention provides a laser welding device for pipeline welding, which is specifically as follows: when it is necessary to fix pipelines to be welded with different diameters, the motor 208 in the fixing mechanism 2 is started, and the motor 208 drives the driving wheel 209 to rotate. Since the gear frame 202 is meshed with the driving wheel 209, the rotation of the driving wheel 209 will drive the gear frame 202 to rotate synchronously inside the support frame 201. At the same time, the driving wheel 209 is meshed with the rack 204. During the rotation of the gear frame 202, the rack 204 will perform a linear sliding motion under the restriction of the limit frame 203. Multiple racks 204 will linearly displace at the same time, thereby forming an annular clamping structure centered on the center point of the gear frame 202. The connecting ring 210 moves with the rack 204, and the inner The rubber material on the inside can play a role in buffering and increasing friction, and can adapt to the outer surface contours of pipes of different diameters and fit tightly to the pipes, thereby ensuring that the pipes will not be displaced during the welding process, providing a stable foundation for subsequent precise welding. After the welding is completed, the cooling mechanism 3 begins to play a role, and cooling water is pre-stored in the water cooling box 301. The automatic pump 302 is started to extract the cooling water in the water cooling box 301 and transport it to the water cooling ring 304 through the cooling pipe 303. The water cooling ring 304, with its soft material, fits tightly to the outer wall of the pipe fixed by the connecting ring 210, increases the contact area with the pipe, and improves the cooling efficiency. The cooling water circulates in the water cooling ring 304, takes away the heat on the pipe, accelerates the cooling and solidification of the weld, and helps to improve The quality of the welding joint is improved, the influence of thermal stress on the weld is reduced, and defects such as cracks are avoided. During the welding process, the air curtain mechanism 4 operates continuously, and the gas supply pump 401 pressurizes the input inert gas and delivers it to the nozzle 402. The nozzle 402 then sprays the gas evenly, and the gas forms a stable air curtain at the curtain frame 403 connected to the other end of the nozzle 402. The air curtain covers the welding area and key parts of the equipment, such as the front of optical elements and electrical components, and effectively blocks impurities such as metal vapor and spatter generated during the welding process to prevent them from adhering to the equipment and causing damage, thereby ensuring the normal operation of the equipment and extending the service life of the equipment. At the same time, it is also beneficial to maintain the cleanliness of the welding area and ensure the quality of welding. In addition, the internal installation of the water cooling box 301 A water level monitor 305 is installed, which can monitor the water level in the water cooling box 301 in real time. During the welding operation, if the cooling water drops due to evaporation, leakage, etc., once the water level is lower than the set safety threshold, the water level monitor 305 will immediately send out an alarm signal to remind the operator to replenish cooling water in time to avoid idling damage of the automatic pump 302 due to lack of water, or poor cooling effect affecting the welding quality. Through this real-time monitoring and early warning mechanism, the stable operation of the cooling system is guaranteed, and then the reliable operation of the entire welding equipment is guaranteed. The fixing mechanism 2 of the present invention adopts a unique gear-rack 204 transmission design, which cooperates with the motor 208 drive and can quickly respond to operating instructions. When facing pipes to be welded with different diameters,Multiple racks 204 work together to form an annular clamping structure that adapts to the contour of the pipeline and ensures that the pipeline remains stable and motionless throughout the welding process. The internal rubber material not only buffers the clamping force to avoid damaging the pipeline, but also increases the friction, effectively preventing displacement deviation during welding, laying a solid foundation for subsequent welding operations, and mainly using water cooling. The water cooling box 301, automatic pump 302, cooling pipe 303 and water cooling ring 304 form an efficient cooling system. After welding is completed, the automatic pump 302 can start quickly and accurately deliver cooling water to the water cooling ring 304 that is close to the pipeline. The soft material of the water cooling ring 304 fits tightly to the outer wall of the pipeline and has a large contact area with the ground. , the heat transfer efficiency is high, the heat of the weld is quickly taken away, and the weld is quickly cooled and solidified, which not only reduces the damage of thermal stress to the weld joint and effectively reduces the risk of cracks, but also shortens the cycle of the entire welding process and improves production efficiency. In addition, the air curtain mechanism 4 plays a key protective role in the welding process. The gas supply pump 401 pressurizes and transports the inert gas, and after being ejected through the nozzle 402, a stable air curtain is formed at the curtain frame 403, covering the welding area and key parts of the equipment, and preventing the invasion of impurities such as metal vapor and spatter. ,

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for pipeline welding, comprising a workbench (1), characterized in that: A fixing mechanism (2) is installed on one side of the outer wall of the workbench (1) for fixing pipes to be welded of different diameters. A cooling mechanism (3) is installed on one end of the interior of the fixing mechanism (2) for quickly cooling the pipes after welding. The output end of the cooling mechanism (3) is connected to an air curtain mechanism (4) for forming an air curtain protection for the equipment.

2. The laser welding equipment for pipeline welding according to claim 1 is characterized in that: The fixing mechanism (2) comprises a support frame (201), the support frame (201) being mounted on one side of an outer wall of the workbench (1), the support frame (201) being rotatably connected to a gear frame (202) inside, a limit frame (203) being mounted on one side of an outer wall of the support frame (201), the limit frame (203) being slidably connected to a rack (204) inside, a connecting column (205) being fixedly connected to the top of the support frame (201), an extension rod (206) being mounted on one end of the connecting column (205), one end of a short column (207) being fixedly connected to the bottom of the extension rod (206), a motor (208) being mounted on the other end of the short column (207), and an output end of the motor (208) being fixedly connected to a driving wheel (209).

3. The laser welding equipment for pipeline welding according to claim 2 is characterized in that: The cooling mechanism (3) comprises a water cooling box (301), the water cooling box (301) being mounted on one side of an outer wall of the workbench (1), an automatic pump (302) being mounted on one side of the outer wall of the water cooling box (301), an input end of the automatic pump (302) being connected to the water cooling box (301), an output end of the automatic pump (302) being connected to one end of a cooling pipe (303), and the other end of the cooling pipe (303) being connected to a water cooling ring (304).

4. The laser welding equipment for pipeline welding according to claim 1 is characterized in that: The air curtain mechanism (4) comprises a gas supply pump (401), the gas supply pump (401) being mounted on one side of the outer wall of the workbench (1), the protective gas being input into the input end of the gas supply pump (401), and one end of a nozzle (402) being mounted on the output end of the gas supply pump (401).

5. The laser welding equipment for pipeline welding according to claim 2 is characterized in that: The gear rack (202) is meshed with the driving wheel (209), and the driving wheel (209) is meshed with the rack (204).

6. The laser welding equipment for pipeline welding according to claim 3 is characterized in that: A connecting ring (210) is installed at one end of the rack (204), and a rubber material is provided inside the connecting ring (210).

7. The laser welding equipment for pipeline welding according to claim 6 is characterized in that: The water cooling ring (304) is made of a soft material and is installed on one side of the outer wall of the connecting ring (210).

8. The laser welding equipment for pipeline welding according to claim 4 is characterized in that: The other end of the nozzle (402) is connected to a curtain frame (403).

9. The laser welding equipment for pipeline welding according to claim 3 is characterized in that: A water level monitor (305) is installed inside the water cooling box (301).

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