Multi-station laser welding device and welding method for electric kettle

Abstract

The invention discloses a multi-station laser welding device and method for an electric kettle, and relates to the technical field of intelligent welding systems.The multi-station laser welding device comprises a machining table, the top of the machining table is fixedly connected with a station circular track, the interior of the station circular track is slidably connected with a station sliding block, and the top of the station sliding block is fixedly connected with a base; a multifunctional clamp is arranged on the base and comprises an inner supporting fit circular truncated cone, a through positioning hole is formed in the position, located at the center line, of the inner supporting fit circular truncated cone, and fit arc plates are connected to the outer side wall of the inner supporting fit circular truncated cone at equal intervals through hinges. The outer side wall, located between the multiple matched arc plates, of the inner supporting matched circular truncated cone is fixedly connected with a mounting ring. According to the multi-station laser welding device and method for the electric kettle, the multifunctional clamp is arranged, so that longitudinal seam welding, circular seam welding and local welding of a kettle body do not need to be replaced, convenience and high efficiency are achieved, and the overall efficiency of multi-station laser welding is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent welding systems, and particularly relates to a multi-station laser welding device for electric kettles and a welding method. BACKGROUND

[0002] The multi-station laser welding device drives multiple processing stations through one laser source, can significantly improve production efficiency, and is an important technical equipment in current industrial manufacturing. In the laser welding process of electric kettles, longitudinal seam welding of the kettle body, ring seam welding of the kettle body and the base, and spout welding are required. Therefore, the multi-station laser welding device is the most efficient for welding.

[0003] In the use process of the existing multi-station laser welding device, since the position of the electric kettle for welding each time is different, in order to ensure that there is no obstruction and no risk in the welding process, different clamps need to be used to clamp the kettle body. Before the kettle body is moved to each station for welding, different clamps need to be replaced. The repeated replacement of the clamps is easy to cause excessive extrusion damage to the kettle body. At the same time, a long time is required for the replacement of the clamps, which greatly reduces the multi-station laser welding efficiency. SUMMARY

[0004] The present application discloses a multi-station laser welding device for electric kettles, which aims to solve the technical problem that the existing multi-station laser welding device in the use process is different from the position of the electric kettle for welding each time, in order to ensure that there is no obstruction and no risk in the welding process, different clamps need to be used to clamp the kettle body. Before the kettle body is moved to each station for welding, different clamps need to be replaced. The repeated replacement of the clamps is easy to cause excessive extrusion damage to the kettle body. At the same time, a long time is required for the replacement of the clamps, which greatly reduces the multi-station laser welding efficiency.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: Multi-station laser welding device for electric kettle, including processing platform, the top of the processing platform is fixedly connected with a work station ring rail, and the inside of the work station ring rail is slidably connected with a work station sliding block, the top of the work station sliding block is fixedly connected with a base, and a multifunctional clamp is arranged on the base, the multifunctional clamp comprises an inner supporting matching circular table, a through positioning hole is formed in the inner supporting matching circular table at the center line, a plurality of matching arc plates are connected to the outer side wall of the inner supporting matching circular table at equal distances through hinges, an installation ring is fixedly connected to the outer side wall of the inner supporting matching circular table between the matching arc plates, a hydraulic cylinder one is connected to the outer side wall of each matching arc plate through a hinge in the direction of the installation ring, the output end of the hydraulic cylinder one is connected to the side wall of the adjacent matching arc plate through a hinge, a sliding groove is formed in the outer side wall of the inner supporting matching circular table near the end, an adjusting sliding block is slidably connected in each sliding groove, a hydraulic cylinder two is fixedly connected to each adjusting sliding block, an adjusting butt joint piece is fixedly connected to the output end of each hydraulic cylinder two, a telescopic sealing belt is fixedly connected to each adjusting butt joint piece, a reset spring rod is fixedly connected to one side of each adjusting sliding block inside the sliding groove, one end of the reset spring rod is fixedly connected to the inner wall of one side of the sliding groove, a gas guide hole is formed in the outer side wall of the inner supporting matching circular table in the upward direction at equal distances, and the gas guide hole is in communication with the positioning hole.

[0006] In a preferred scheme, the top of the base is fixedly connected with two connecting frames, and the same rotating ring rail is fixedly connected to the ends of the two connecting frames, the inside of the rotating ring rail is slidably connected with two rotating sliding blocks, the same rotating frame rod is fixedly connected to the same side of the two rotating sliding blocks, the side of the rotating ring rail away from the rotating frame rod is fixedly connected with a motor plate, the side of the motor plate is fixedly connected with a reversible motor two, the output shaft of the reversible motor two is fixedly connected with a rotating shaft rod through a shaft coupling, and one end of the rotating shaft rod is fixedly connected to one side of the rotating frame rod.

[0007] In a preferred scheme, the rotating frame rod is fixedly connected with a reversible motor one at both ends, and the output shafts of the two reversible motors one are fixedly connected with reversible shafts through shaft couplings, the outer side walls of the two reversible shafts are fixedly connected with lower rotating frames, the side of the rotating frame rod facing the lower rotating frames is fixedly connected with a reinforcing ring rail, the inside of the reinforcing ring rail is slidably connected with two butt joints, and the butt joints are fixedly connected to one side of the adjacent lower rotating frames.

[0008] In a preferred scheme, the side of the lower rotating frame away from the rotating frame rod is provided with a through hole, two hydraulic cylinders three are fixedly connected to the side of the lower rotating frame outside the through hole, the output ends of the two hydraulic cylinders three are fixedly connected with the same end block, the side of the end block facing the lower rotating frame is fixedly connected with an inner hollow positioning column, and the inner hollow positioning column is inserted into the positioning hole of the inner supporting matching circular table.

[0009] In a preferred scheme, the top of the base is fixedly connected with a gas storage tank, and the base is fixedly connected with a pump seat near the top of the gas storage tank, the top of the pump seat is fixedly connected with a gas pump, the gas inlet end of the gas pump is connected with the inside of the gas storage tank through a pipeline, and the gas outlet end of the gas pump is fixedly connected with a communication pipe, and the opposite sides of the two inner hollow positioning columns are both connected with telescopic air pipes through bearings.

[0010] In a preferred scheme, the top of the base is fixedly connected with a gas storage tank, and the base is fixedly connected with a pump seat near the top of the gas storage tank, the top of the pump seat is fixedly connected with a gas pump, the gas inlet end of the gas pump is connected with the inside of the gas storage tank through a pipeline, and the gas outlet end of the gas pump is fixedly connected with a communication pipe, and the opposite sides of the two inner hollow positioning columns are both connected with telescopic air pipes through bearings.

[0011] In a preferred scheme, the top of the base is fixedly connected with a gas storage tank, and the base is fixedly connected with a pump seat near the top of the gas storage tank, the top of the pump seat is fixedly connected with a gas pump, the gas inlet end of the gas pump is connected with the inside of the gas storage tank through a pipeline, and the gas outlet end of the gas pump is fixedly connected with a communication pipe, and the opposite sides of the two inner hollow positioning columns are both connected with telescopic air pipes through bearings.

[0012] In a preferred scheme, the top of the base is fixedly connected with a gas storage tank, and the base is fixedly connected with a pump seat near the top of the gas storage tank, the top of the pump seat is fixedly connected with a gas pump, the gas inlet end of the gas pump is connected with the inside of the gas storage tank through a pipeline, and the gas outlet end of the gas pump is fixedly connected with a communication pipe, and the opposite sides of the two inner hollow positioning columns are both connected with telescopic air pipes through bearings.

[0013] In a preferred scheme, the top of the base is fixedly connected with a gas storage tank, and the base is fixedly connected with a pump seat near the top of the gas storage tank, the top of the pump seat is fixedly connected with a gas pump, the gas inlet end of the gas pump is connected with the inside of the gas storage tank through a pipeline, and the gas outlet end of the gas pump is fixedly connected with a communication pipe, and the opposite sides of the two inner hollow positioning columns are both connected with telescopic air pipes through bearings.

[0014] The method comprises the following steps: Step one: when the kettle body longitudinal seam welding operation is carried out, the bent kettle body is sleeved outside the inner support fitting circular table and fitting arc plate, the positive and negative rotation motor one drives two inner hollow positioning columns to rotate to the same height of the inner support fitting circular rod, then the hydraulic cylinder three drives the inner hollow positioning column to move to the positioning hole, the positioning of the kettle body is completed, the mechanical arm two drives the laser processing head to carry out the welding operation, the longitudinal seam welding is completed; Step two: the driving motor one drives the kettle body to move to the next station, the inner hollow positioning column at one end of the adjusting butt joint piece is separated from the inner support fitting circular table, the positive and negative rotation motor two drives the rotating frame rod to rotate by 60°, the kettle bottom ring seat is pressed on the adjusting butt joint piece, the reset spring rod is compressed, then the adjusting butt joint piece moves downward, the kettle bottom ring seat is butt jointed with the kettle body; Step three: the driving motor one is operated again to move the kettle body to the last station, the welding of the kettle spout and the kettle body is started, after the driving motor one drives the base to rotate by 180°, the welding operation on the three stations is completed, during the three times of welding, the air pump is started, the air pump inputs the protective gas in the gas storage tank into the inner hollow positioning column, and then into the positioning hole, flows into the inside of the kettle body through the gas guide hole, and provides back gas protection.

[0015] As can be seen from the above, the multi-station laser welding device for electric kettle provided by the present application has the following advantages: when the kettle body longitudinal seam welding operation is carried out, the bent kettle body is sleeved outside the inner support fitting circular table and fitting arc plate, the positive and negative rotation motor one drives two inner hollow positioning columns to rotate to the same height of the inner support fitting circular rod, then the hydraulic cylinder three drives the inner hollow positioning column to move to the positioning hole, the positioning of the kettle body is completed, the kettle body longitudinal seam welding is started, when the kettle body and the base ring seam welding is carried out, the inner hollow positioning column at one end of the adjusting butt joint piece is separated from the inner support fitting circular table, the positive and negative rotation motor two drives the rotating frame rod to rotate by 60°, after the kettle body is moved to the next station, the base is pressed on the adjusting butt joint piece, the reset spring rod is compressed, then the adjusting butt joint piece moves downward, the base is butt jointed with the kettle body, the ring seam welding is started, after the kettle body and the base are butt jointed, the kettle body is moved to the next station for the welding of the kettle spout, after the electric heating kettle laser welding is completed, the adjusting hydraulic cylinder one and the adjusting hydraulic cylinder two drive the fitting arc plate and the adjusting butt joint piece to move to the inner support fitting circular table, so that the kettle body is removed conveniently, the existence of the multifunctional clamp makes the kettle body longitudinal seam welding, ring seam welding and local welding all without the replacement of the clamp, which is convenient and efficient, and further improves the overall efficiency of the multi-station laser welding. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure schematic diagram of the multi-station laser welding device for electric kettle provided by the present application.

[0017] Figure 2This is a top view of the overall structure of the multi-station laser welding device for electric kettles proposed in this invention.

[0018] Figure 3 This is a schematic diagram of the multi-functional fixture structure for a multi-station laser welding device for electric kettles proposed in this invention.

[0019] Figure 4 for Figure 3 The front view of the planar structure.

[0020] Figure 5 This is a schematic diagram of the combined structure of the inner support mating frustum, mating arc plate, and telescopic sealing strip of the multi-station laser welding device for electric kettles proposed in this invention.

[0021] Figure 6 for Figure 5 Cross-sectional view of the inner support fitting frustum structure.

[0022] Figure 7 This is a schematic diagram of the combined structure of the base, rotating ring rail, hollow positioning column and rotating frame rod of the multi-station laser welding device for electric kettles proposed in this invention.

[0023] Figure 8 This is a schematic diagram of the combined structure of the telescopic air pipe, the inner hollow positioning column, and the lower rotating frame of the multi-station laser welding device for electric kettles proposed in this invention.

[0024] Figure 9 This is a schematic diagram of the combined structure of the robotic arm and the multi-angle detection mechanism for the multi-station laser welding device for electric kettles proposed in this invention.

[0025] Figure 10 This is a schematic diagram of the multi-angle detection mechanism of the multi-station laser welding device for electric kettles proposed in this invention.

[0026] In the diagram: 1. Processing table; 2. Laser; 3. Laser processing head; 4. Multifunctional fixture; 401. Internal support mating truncated cone; 402. Mating arc plate; 403. Rotating ring rail; 404. Rotating support rod; 405. Forward and reverse motor one; 406. Telescopic sealing strip; 407. Telescopic air pipe; 408. Air tank; 409. Pump base; 410. Air pump; 411. Adjusting docking piece; 412. Mounting ring; 413. Hollow positioning column; 414. Lower rotating frame; 415. Hydraulic cylinder one; 416. Positioning hole; 417. Air guide hole; 418. Hydraulic cylinder two; 419. Return spring rod; 420. Adjusting slider; 421. Rotating slider; 422. Rotating shaft; 423. Forward and reverse motor two; 424. Motor plate; 425. Connecting frame; 4 26. Forward and reverse rotation shaft; 427. Docking block; 428. Connecting pipe; 429. Reinforced ring rail; 430. Hydraulic cylinder three; 431. End block; 5. Robotic arm one; 6. Wire plate; 7. Workstation ring rail; 8. Robotic arm two; 9. Drive motor one; 10. Connecting rod one; 11. Workstation slider; 12. Base; 13. Multi-angle detection mechanism; 1301. Adjusting slide rail; 1302. Detection camera; 1303. Telescopic sleeve; 1304. Rear frame; 1305. Shaft frame; 1306. Sliding block; 1307. Deflection shaft; 1308. Push cylinder; 1309. Hydraulic cylinder four; 1310. Base block; 1311. Drive motor two; 1312. Drive shaft; 1313. Connecting rod two; 1314. End frame; 14. Docking frame. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] The multi-station laser welding device for electric kettles disclosed in this invention is mainly applied to existing multi-station laser welding devices. In use, since the electric kettle is welded at different positions each time, different clamps are required to hold the kettle body in order to ensure that there is no obstruction and no risk during the welding process. Before moving it to each welding station, different clamps need to be changed. Repeated changes of clamps can easily cause excessive compression and damage to the kettle body. At the same time, the clamp replacement time is long, which greatly reduces the efficiency of multi-station laser welding.

[0029] Reference Figures 1-10A multi-station laser welding device for electric kettles includes a processing table 1. A station ring rail 7 is fixedly connected to the top of the processing table 1, and a station slider 11 is slidably connected inside the station ring rail 7. A base 12 is fixedly connected to the top of the station slider 11. A multi-functional clamp 4 is provided on the base 12. The multi-functional clamp 4 includes an inner support fitting frustum 401, and a through positioning hole 416 is opened at the center line of the inner support fitting frustum 401. Fitting arc plates 402 are connected at equal intervals to the outer walls of the inner support fitting frustum 401 via hinges. Mounting rings 412 are fixedly connected to the outer walls of the inner support fitting frustum 401 between multiple fitting arc plates 402. Hydraulic cylinders 415 are hinged to the outer walls of the mounting rings 412 facing each fitting arc plate 402. The output end is hinged to the side wall of the adjacent mating arc plate 402. The outer side wall of the inner supporting mating frustum 401 near the end has a sliding groove, and an adjusting slider 420 is slidably connected inside each sliding groove. A hydraulic cylinder 418 is fixedly connected to each adjusting slider 420. An adjusting docking piece 411 is fixedly connected to the output end of each hydraulic cylinder 418. A telescopic sealing strip 406 is fixedly connected to each adjusting docking piece 411. A return spring rod 419 is fixedly connected to one side of each adjusting slider 420 inside the sliding groove. One end of the return spring rod 419 is fixedly connected to the inner wall of one side of the sliding groove. Air guide holes 417 are equidistantly opened on the outer side wall of the inner supporting mating frustum 401 facing upward. The air guide holes 417 are connected to the positioning holes 416.

[0030] In specific application scenarios, when performing longitudinal seam welding on the kettle body, the bent kettle body is fitted over the inner support mating frustum 401 and the mating arc plate 402. The first reversible motor 405 is activated to rotate the two inner hollow positioning columns 413 to the same height as the inner support mating rod. Then, the third hydraulic cylinder 430 is adjusted to move the inner hollow positioning columns 413 into the positioning holes 416, completing the kettle body positioning and beginning longitudinal seam welding. When performing circumferential seam welding between the kettle body and the base 12, the inner hollow positioning column 413 located at one end of the adjusting docking piece 411 disengages from the inner support mating frustum 401. The second reversible motor 423 is activated to rotate the rotating frame rod 404 60°, moving the kettle body to the next work station. The base 12 is pressed onto the adjusting docking piece 411, and the reset spring rod 419 is compressed. The adjusting docking piece 411 then moves downward, and the base 12 and the kettle body are docked, starting the circumferential weld. After the kettle body and the base 12 are docked, the kettle body is moved to the next station for spout welding. After the electric heating kettle is laser welded, the adjusting hydraulic cylinder 1 415 and hydraulic cylinder 2 418 drive the mating arc plate 402 and the adjusting docking piece 411 to move towards the inner support mating frustum 401, thus facilitating the removal of the kettle body. The presence of the multi-functional fixture 4 means that the longitudinal weld, circumferential weld and partial weld of the kettle body do not require fixture replacement, which is convenient and efficient, thereby improving the overall efficiency of multi-station laser welding.

[0031] Specifically, during the welding process of the kettle body, the air pump 410 is started. The air pump 410 inputs the protective gas in the air storage tank 408 into the inner hollow positioning column 413, and then into the positioning hole 416. It flows into the interior of the kettle body through the air guide hole 417. The various telescopic sealing strips 406 on the mating piece 411 are adjusted to improve the internal sealing of the kettle body, thereby reducing the escape rate of the protective gas and improving the back protection effect of the kettle body during the welding process.

[0032] Reference Figures 1-8 In a preferred embodiment, two connecting brackets 425 are fixedly connected to the top of the base 12, and the ends of the two connecting brackets 425 are fixedly connected to the same rotating ring rail 403. Two rotating sliders 421 are slidably connected inside the rotating ring rail 403. The same rotating rod 404 is fixedly connected to the same side of the two rotating sliders 421. A motor plate 424 is fixedly connected to the side of the rotating ring rail 403 away from the rotating rod 404. A second forward and reverse motor 423 is fixedly connected to one side of the motor plate 424. The output shaft of the second forward and reverse motor 423 is fixedly connected to a rotating shaft 422 through a coupling. One end of the rotating shaft 422 is fixedly connected to one side of the rotating rod 404.

[0033] Reference Figure 3 , Figure 7 and Figure 8 In a preferred embodiment, a forward and reverse motor 405 is fixedly connected to both ends of the rotating frame 404, and the output shafts of the two forward and reverse motors 405 are fixedly connected to a forward and reverse shaft 426 via a coupling. A lower rotating frame 414 is fixedly connected to the outer wall of the two forward and reverse shafts 426. A reinforcing ring rail 429 is fixedly connected to the side of the rotating frame 404 facing the lower rotating frame 414. Two mating blocks 427 are slidably connected inside the reinforcing ring rail 429, and the mating blocks 427 are fixedly connected to one side of the adjacent lower rotating frame 414.

[0034] Reference Figure 7 and Figure 8 In a preferred embodiment, the lower rotating frame 414 has a through hole on the side away from the rotating frame rod 404, and two hydraulic cylinders 430 are fixedly connected to the side of the lower rotating frame 414 outside the through hole. The output ends of the two hydraulic cylinders 430 are fixedly connected to the same end block 431. A hollow positioning post 413 is fixedly connected to the side of the end block 431 facing the lower rotating frame 414. The hollow positioning post 413 is inserted into the positioning hole 416 of the inner support fitting truncated cone 401.

[0035] Reference Figure 3 and Figure 7In a preferred embodiment, a gas storage tank 408 is fixedly connected to the top of the base 12, and a pump base 409 is fixedly connected to the top of the base 12 near the top of the gas storage tank 408. An air pump 410 is fixedly connected to the top of the pump base 409. The air inlet of the air pump 410 is connected to the inside of the gas storage tank 408 through a pipe, and the air outlet of the air pump 410 is fixedly connected to a connecting pipe 428. The two hollow positioning columns 413 are connected to telescopic air pipes 407 on opposite sides through bearings. The two ends of the connecting pipe 428 are respectively connected to the inside of the two telescopic air pipes 407 through flanges.

[0036] Reference Figure 1 , Figure 2 and Figure 3 In a preferred embodiment, the processing table 1 has a motor slot at the top of the center position of the station ring rail 7, and a drive motor 9 is fixedly connected inside the motor slot. The output shaft of the drive motor 9 is fixedly connected to a connecting rod 10 through a coupling, and one end of the connecting rod 10 is fixedly connected to the outer wall of the station slider 11.

[0037] Reference Figure 1 and Figure 2 In a preferred embodiment, the processing table 1 is provided with robotic arms 2 at equal intervals at the top of the workstation ring rail 7, and the control port of each robotic arm 2 is connected to a laser processing head 3. A laser 2 is fixedly connected to the top of the processing table 1, and the same line plate 6 is fixedly connected to the top of the processing table 1 at the laser 2 and the three robotic arms 2 8.

[0038] Reference Figure 1 , Figure 2 and Figure 9 In a preferred embodiment, the processing table 1 is provided with a robotic arm 5 at the top between each pair of adjacent robotic arms 8, and the control port of each robotic arm 5 is connected to a docking frame 14. The docking frame 14 is provided with a multi-angle detection mechanism 13, which includes an adjusting slide rail 1301. The adjusting slide rail 1301 is fixedly connected to the docking frame 14. A rear frame 1304 is fixedly connected to the side of the adjusting slide rail 1301 facing the docking frame 14. A drive motor 1311 is fixedly connected to one side of the rear frame 1304. The output shaft of the drive motor 1311 is fixedly connected to a drive shaft 1312 through a coupling. A connecting rod 1313 is fixedly connected to the outer wall of the drive shaft 1312. A sliding block 1306 is fixedly connected to the end of the connecting rod 1313. The sliding block 1306 is slidably connected to the inside of the adjusting slide rail 1301.

[0039] Specifically, after a single welding of the kettle body is completed, the robotic arm 5 moves the multi-angle inspection mechanism 13 to the weld seam of the kettle body and takes pictures of the weld seam of the kettle body through the inspection camera 1302 to ensure that any defects that occur after each welding of the kettle body can be recorded and dealt with immediately.

[0040] It should be noted that the welds on the pot body are either long strips or rings. Therefore, when inspecting welds of different shapes, the drive motor 1311 is started to rotate the inspection camera 1302, the hydraulic cylinder 1309 is adjusted to adjust the angle of the inspection camera 1302, and the push cylinder 1308 is adjusted to move the inspection camera 1302 a long distance, so that it can be used to inspect different welds.

[0041] Reference Figure 9 and Figure 10 In a preferred embodiment, a shaft bracket 1305 is fixedly connected to one side of the sliding block 1306, and a shaft groove is opened on the shaft bracket 1305. The inner walls of both sides of the shaft groove are connected to a deflection shaft 1307 through bearings. A telescopic sleeve plate 1303 is fixedly connected to the outer wall of the deflection shaft 1307. An end frame 1314 is fixedly connected to the end of the telescopic sleeve plate 1303 away from the adjusting slide rail 1301. A detection camera 1302 is fixedly connected to the bottom of the end frame 1314. A push cylinder 1308 is fixedly connected to the side of the shaft bracket 1305 away from the detection camera 1302. The output end of the push cylinder 1308 is fixedly connected to one side of the end frame 1314. A bottom block 1310 is fixedly connected to the side of the shaft bracket 1305 below the telescopic sleeve plate 1303. A hydraulic cylinder 1309 is connected to one side of the bottom block 1310 through a hinge. The output end of the hydraulic cylinder 1309 is connected to the bottom of the telescopic sleeve plate 1303 through a hinge.

[0042] A multi-station laser welding method for electric kettles, using the multi-station laser welding apparatus for electric kettles as described above, includes the following steps: Step 1: When performing the longitudinal seam welding operation of the pot body, the bent pot body is placed on the inner support fitting round frustum 401 and fitting arc plate 402. The forward and reverse motor 405 is started to drive the two inner hollow positioning columns 413 to rotate to the same height as the inner support fitting round rod. Then, the hydraulic cylinder 430 is adjusted to drive the inner hollow positioning column 413 to move into the positioning hole 416 to complete the positioning of the pot body. The robotic arm 8 drives the laser processing head 3 to perform the welding operation, and the longitudinal seam welding is completed. Step 2: Start the drive motor 9 to move the kettle body to the next station. The hollow positioning column 413 at one end of the adjusting docking plate 411 disengages from the inner support mating truncated cone 401. Start the forward and reverse motor 423 to rotate the rotating frame rod 404 60°, pressing the kettle bottom ring seat onto the adjusting docking plate 411. The reset spring rod 419 is compressed, and the adjusting docking plate 411 moves downward, completing the docking between the kettle bottom ring seat and the kettle body. Step 3: Drive motor 9 runs again, moving the kettle body to the last station to begin welding the spout to the kettle body. After drive motor 9 rotates the base 12 180°, it completes the welding operations at the three stations. During the three welding processes, air pump 410 is started. Air pump 410 inputs the protective gas from the air tank 408 into the inner hollow positioning column 413, which then enters the positioning hole 416 and flows into the interior of the kettle body through the air guide hole 417 to provide back air protection.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-station laser welding device for electric kettles, comprising a processing table (1), characterized in that, The top of the processing table (1) is fixedly connected to a station ring rail (7), and a station slider (11) is slidably connected inside the station ring rail (7). The top of the station slider (11) is fixedly connected to a base (12), and a multi-functional fixture (4) is provided on the base (12). The multi-functional fixture (4) includes an inner support fitting truncated cone (401), and the inner support fitting truncated cone (401) has a through positioning hole (416) at the center line. The outer side wall of the inner support fitting truncated cone (401) is equidistantly connected to fitting arc plates (402) by hinges. The outer side wall of the inner support fitting truncated cone (401) between multiple fitting arc plates (402) is fixedly connected to an installation ring (412). The outer side wall of the installation ring (412) facing each fitting arc plate (402) is connected to a hydraulic cylinder (415) by hinges. The output end of the hydraulic cylinder (415) is connected to the hydraulic cylinder (415) by a hinge. The hinge is connected to the side wall of the adjacent mating arc plate (402). The outer side wall of the inner support mating truncated cone (401) near the end has a sliding groove. Each sliding groove is slidably connected to an adjusting slider (420). Each adjusting slider (420) is fixedly connected to a hydraulic cylinder (418). Each hydraulic cylinder (418) is fixedly connected to an adjusting docking piece (411) at its output end. Each adjusting docking piece (411) is fixedly connected to a telescopic sealing strip (406). Each adjusting slider (420) is fixedly connected to a return spring rod (419) on one side inside the sliding groove. One end of the return spring rod (419) is fixedly connected to the inner wall of one side of the sliding groove. The outer side wall of the inner support mating truncated cone (401) facing upward has air guide holes (417) at equal intervals. The air guide holes (417) are connected to the positioning holes (416).

2. The multi-station laser welding device for electric kettles according to claim 1, characterized in that, The top of the base (12) is fixedly connected to two connecting frames (425), and the ends of the two connecting frames (425) are fixedly connected to the same rotating ring rail (403). The rotating ring rail (403) is slidably connected to two rotating sliders (421). The same rotating rod (404) is fixedly connected to the same side of the two rotating sliders (421). The side of the rotating ring rail (403) away from the rotating rod (404) is fixedly connected to a motor plate (424). The side of the motor plate (424) is fixedly connected to a second forward and reverse motor (423). The output shaft of the second forward and reverse motor (423) is fixedly connected to a rotating shaft (422) through a coupling. One end of the rotating shaft (422) is fixedly connected to one side of the rotating rod (404).

3. The multi-station laser welding device for electric kettles according to claim 2, characterized in that, The rotating frame (404) is fixedly connected to two reversible motors (405) at both ends, and the output shafts of the two reversible motors (405) are fixedly connected to reversible shafts (426) via couplings. The outer walls of the two reversible shafts (426) are fixedly connected to lower rotating frames (414). A reinforcing ring rail (429) is fixedly connected to the side of the rotating frame (404) facing the lower rotating frame (414). Two mating blocks (427) are slidably connected inside the reinforcing ring rail (429). The mating blocks (427) are fixedly connected to one side of the adjacent lower rotating frame (414).

4. The multi-station laser welding device for electric kettles according to claim 3, characterized in that, The lower rotating frame (414) has a through hole on the side away from the rotating frame rod (404), and two hydraulic cylinders (430) are fixedly connected to the side of the lower rotating frame (414) outside the through hole. The output ends of the two hydraulic cylinders (430) are fixedly connected to the same end block (431). The side of the end block (431) facing the lower rotating frame (414) is fixedly connected to an inner hollow positioning column (413). The inner hollow positioning column (413) is inserted into the positioning hole (416) of the inner support fitting truncated cone (401).

5. The multi-station laser welding device for electric kettles according to claim 4, characterized in that, A gas storage tank (408) is fixedly connected to the top of the base (12), and a pump seat (409) is fixedly connected to the top of the base (12) near the top of the gas storage tank (408). An air pump (410) is fixedly connected to the top of the pump seat (409). The air inlet of the air pump (410) is connected to the inside of the gas storage tank (408) through a pipe. The air delivery end of the air pump (410) is fixedly connected to a connecting pipe (428). The two hollow positioning columns (413) are connected to telescopic air pipes (407) on opposite sides through bearings. The two ends of the connecting pipe (428) are respectively connected to the inside of the two telescopic air pipes (407) through flanges.

6. The multi-station laser welding device for electric kettles according to claim 5, characterized in that, The processing table (1) has a motor slot at the top of the center position of the work station ring rail (7), and a drive motor (9) is fixedly connected inside the motor slot. The output shaft of the drive motor (9) is fixedly connected to a connecting rod (10) through a coupling. One end of the connecting rod (10) is fixedly connected to the outer wall of the work station slider (11).

7. The multi-station laser welding device for electric kettles according to claim 6, characterized in that, The processing table (1) is provided with mechanical arms two (8) at equal distances at the top of the work station ring rail (7), and the control port of each mechanical arm two (8) is connected to a laser processing head (3). A laser (2) is fixedly connected to the top of the processing table (1), and the same line plate (6) is fixedly connected to the top of the processing table (1) at the laser (2) and the three mechanical arms two (8).

8. The multi-station laser welding device for electric kettles according to claim 7, characterized in that, The processing table (1) is located at the top between each pair of adjacent robotic arms (8) and is equipped with a robotic arm (5). The control port of each robotic arm (5) is connected to a docking frame (14). The docking frame (14) is equipped with a multi-angle detection mechanism (13). The multi-angle detection mechanism (13) includes an adjusting slide rail (1301). The adjusting slide rail (1301) is fixedly connected to the docking frame (14). The side of the adjusting slide rail (1301) facing the docking frame (14) is fixedly connected to a rear frame (1304). The side of the rear frame (1304) is fixedly connected to a drive motor (1311). The output shaft of the drive motor (1311) is fixedly connected to a drive shaft (1312) through a coupling. The outer wall of the drive shaft (1312) is fixedly connected to a connecting rod (1313). The end of the connecting rod (1313) is fixedly connected to a sliding block (1306). The sliding block (1306) is slidably connected to the inside of the adjusting slide rail (1301).

9. The multi-station laser welding device for electric kettles according to claim 8, characterized in that, A shaft bracket (1305) is fixedly connected to one side of the sliding block (1306), and a shaft groove is opened on the shaft bracket (1305). A deflection shaft (1307) is connected to the inner walls of both sides of the shaft groove through bearings. A telescopic sleeve plate (1303) is fixedly connected to the outer wall of the deflection shaft (1307). An end frame (1314) is fixedly connected to the end of the telescopic sleeve plate (1303) away from the adjusting slide rail (1301). A detection camera (1302) is fixedly connected to the bottom of the end frame (1314). The shaft bracket (1306) is fixedly connected to the bottom wall of the end frame (1306). 305) A push cylinder (1308) is fixedly connected to the side away from the detection camera (1302). The output end of the push cylinder (1308) is fixedly connected to one side of the end frame (1314). A base block (1310) is fixedly connected to the side of the shaft frame (1305) located below the telescopic sleeve plate (1303). A hydraulic cylinder four (1309) is connected to one side of the base block (1310) through a hinge. The output end of the hydraulic cylinder four (1309) is connected to the bottom of the telescopic sleeve plate (1303) through a hinge.

10. A multi-station laser welding method for electric kettles, using the multi-station laser welding apparatus for electric kettles as described in claim 9, characterized in that... Includes the following steps: Step 1: When performing the longitudinal seam welding operation of the pot body, the bent pot body is placed outside the inner support fitting round platform (401) and fitting arc plate (402). The forward and reverse motor 1 (405) is started to drive the two inner hollow positioning columns (413) to rotate to the same height as the inner support fitting round rod. Then, the hydraulic cylinder 3 (430) is adjusted to drive the inner hollow positioning column (413) to move into the positioning hole (416) to complete the positioning of the pot body. The robotic arm 2 (8) drives the laser processing head (3) to perform the welding operation, and the longitudinal seam welding is completed. Step 2: Start the drive motor 1 (9) to move the pot body to the next station. The inner hollow positioning column (413) located at one end of the adjusting docking plate (411) disengages from the inner support matching truncated cone (401). Start the forward and reverse motor 2 (423) to drive the rotating frame rod (404) to rotate 60°, press the bottom ring seat of the pot onto the adjusting docking plate (411), and the reset spring rod (419) is compressed. Then the adjusting docking plate (411) moves downward, and the bottom ring seat of the pot and the pot body are docked. Step 3: Drive motor 1 (9) runs again, moving the kettle body to the last station and starting the welding process between the spout and the kettle body. When drive motor 1 (9) drives the base (12) to rotate 180°, it completes the welding operation at the three stations. During the three welding processes, the air pump (410) is started. The air pump (410) inputs the protective gas in the air tank (408) into the hollow positioning column (413), and then into the positioning hole (416). It flows into the interior of the kettle body through the air guide hole (417) to provide back air protection.

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