Welding forming device and method for exhaust assembly of waste incinerator

Abstract

This invention discloses a welding and forming device and method for a flue gas assembly of a waste incinerator. The invention relates to the technical field of welding and forming flue gas assemblies for waste incinerators. A main welding assembly for simultaneously welding and forming a first and a second annular weld scar is arranged between two fixed columns. A secondary welding assembly for welding and forming a third annular weld scar is arranged on the crossbeam of an arched frame. A driven gear A is rotatably mounted on the outside of a hollow fixed cylinder. A first connecting plate is tilted to the right and downward, with a first laser welding head fixed inside its extended end. A second connecting plate is tilted to the right and upward, with a second laser welding head fixed inside its extended end. A drive motor is fixed on the bottom surface of a lifting plate, and the output shaft of the drive motor is connected to the bottom end of the drive shaft. The beneficial effects of this invention are: greatly reducing the welding workload of workers and greatly improving the welding and forming efficiency of the flue gas assembly.

Description

Technical Field

[0001] This invention relates to the technical field of welding and forming flue gas components for waste incinerators, and in particular to a welding and forming apparatus and method for flue gas components for waste incinerators. Background Technology

[0002] Waste incinerators are used to burn municipal solid waste. The ash produced during the incineration process is discharged from the end of the grate of the waste incinerator, while the flue gas produced is discharged from the exhaust assembly located at the top of the waste incinerator to the downstream purification equipment.

[0003] A certain batch of waste incinerators are all equipped with a flue gas exhaust system, the structure of which is as follows: Figures 1-2 As shown, it includes a flange 1, a flue pipe 2 and a support. A countersunk hole 4 connected to its central hole 3 is provided on the top surface of the flange 1. The diameter of the countersunk hole 4 is equal to the outer diameter of the flue pipe 2. The lower end of the flue pipe 2 is inserted into the countersunk hole 4 of the flange 1, and a first annular weld scar 8 is welded at the contact point between the inner wall of the flange 1 and the inner wall of the flue pipe 2.

[0004] The support includes an inner annular ring 5 and an outer annular ring 6. Multiple steel bars 7 are evenly fixed between the outer annular ring 6 and the inner annular ring 5. The support is installed inside the exhaust pipe 2. A second annular weld scar 9 is welded to the lower edge of the outer annular ring 6 where it contacts the inner wall of the exhaust pipe 2. A third annular weld scar 10 is welded to the upper edge of the outer annular ring 6 where it contacts the inner wall of the exhaust pipe 2. The function of the support is to increase the mechanical strength of the exhaust pipe 2 to prevent the exhaust pipe 2 from deforming due to heat.

[0005] The method by which workers assemble a flue gas exhaust assembly on each waste incinerator is as follows: workers thread screws through the flange holes of the flue gas exhaust assembly's flange 1 and then connect it to the waste incinerator via threads to install the flue gas exhaust assembly onto the waste incinerator. When the waste incinerator is burning municipal solid waste, the generated flue gas sequentially passes through the central hole 3 of the flange 1 of the flue gas exhaust assembly, the lower port of the flue gas exhaust pipe 2, the area enclosed by the inner annular ring 5 and the outer annular ring 6 of the support component, and finally is discharged from the upper port of the flue gas exhaust pipe 2 to the downstream purification equipment.

[0006] Workers in the workshop use tooling fixtures in conjunction with laser welding equipment to weld and shape the smoke extraction assembly. The structure of the tooling fixtures is as follows: Figure 3 As shown, the tooling fixture includes a machine base 11 and a through slot 12 formed within the machine base 11. Threaded posts 13 are fixedly mounted on the top surface of the machine base 11 and on both the left and right sides of the through slot 12. Each threaded post 13 is threadedly connected to a pressure plate 14. The specific welding and forming method is as follows:

[0007] S1, the worker takes out a... Figures 4-5The flange 1 shown is placed flat on the top surface of the machine base 11 of the tooling fixture, as shown. Figure 6 As shown, ensure that the center hole 3 of the flange 1 is connected to the through slot 12 of the machine base 11;

[0008] S2, The worker takes out a... Figures 7-8 The exhaust pipe 2 shown is inserted from top to bottom into the countersunk hole 4 of the flange 1;

[0009] S3. The worker rotates the two pressure plates 14 of the fixture downwards so that both pressure plates 14 press against the top surface of the exhaust pipe 2, thereby fixing the exhaust pipe 2 and the flange 1 between the pressure plates 14 and the machine base 11. Figure 9 As shown; then the worker took out one as shown. Figures 10-11 The support component shown is then inserted into the exhaust pipe 2 from top to bottom, while holding the inner annular ring 5 of the support component firmly in place. Figure 12 As shown, at this time, flange 1, exhaust pipe 2 and support components are in the welding position;

[0010] S4. Weld flange 1 to exhaust pipe 2 together. The specific operating steps are as follows:

[0011] S41. The worker inserts the laser welding head of the welding equipment into the exhaust pipe 2 through the through groove 12, and aligns the laser welding head 15 with the contact point between the inner wall of the flange 1 and the inner wall of the exhaust pipe 2. Figure 13 As shown;

[0012] S42. The worker turns on the welding equipment, and the laser beam emitted by the laser welding head irradiates the contact point between the inner wall of flange 1 and the inner wall of exhaust pipe 2 to begin welding flange 1 and exhaust pipe 2 together.

[0013] S43. The worker rotates the laser welding head 15 around the axis of the exhaust pipe 2. After the laser welding head 15 rotates one full circle, a first annular weld scar 8 is formed at the contact point between the inner wall of the flange 1 and the inner wall of the exhaust pipe 2. Figure 13 As shown, this allows flange 1 to be welded to exhaust pipe 2.

[0014] S5. Weld the support components into the exhaust pipe 2. The specific operating steps are as follows:

[0015] S51. The worker aligns the laser welding head 15 with the lower edge of the outer annular ring 6 of the support component where it contacts the inner wall of the exhaust pipe 2. Figure 14As shown; then the welding equipment is turned on, and the laser beam emitted by the laser welding head irradiates the contact point between the lower edge of the outer annular ring 6 and the inner wall of the exhaust pipe 2, to begin welding the lower edge of the outer annular ring 6 to the inner wall of the exhaust pipe 2; then the worker rotates the laser welding head 15 around the axis of the outer annular ring 6. After the laser welding head 15 has rotated one full circle, a second annular weld scar 9 is formed at the contact point between the lower edge of the outer annular ring 6 of the support and the inner wall of the exhaust pipe 2, as shown. Figure 14 As shown;

[0016] S52. The worker inserts the laser welding head 15 of the welding equipment into the exhaust pipe 2 from the top port of the exhaust pipe 2, and aligns the laser welding head 15 with the contact point between the upper edge of the outer annular ring 6 of the support component and the inner wall of the exhaust pipe 2, such as... Figure 15 As shown; then the welding equipment is turned on, and the laser beam emitted by the laser welding head irradiates the contact point between the upper edge of the outer annular ring 6 and the inner wall of the exhaust pipe 2, to begin welding the upper edge of the outer annular ring 6 and the inner wall of the exhaust pipe 2 together; then the worker rotates the laser welding head 15 around the axis of the outer annular ring 6. After the laser welding head 15 has rotated one full circle, a third annular weld scar 10 is formed at the contact point between the upper edge of the outer annular ring 6 of the support and the inner wall of the exhaust pipe 2, as shown. Figure 15 As shown, this allows the support components to be welded into the smoke exhaust pipe 2, thus ultimately forming the first smoke exhaust assembly. The structure of this smoke exhaust assembly is as follows: Figures 1-2 As shown;

[0017] S6. Workers can repeat steps S1 to S5 multiple times to weld and form multiple smoke exhaust components.

[0018] However, although workers can weld out smoke exhaust components by using tooling fixtures and welding equipment, the following technical defects still exist in actual operation:

[0019] I. In step S3, the worker needs to manually rotate the two pressure plates 14 of the tooling fixture downwards to fix the exhaust pipe 2 and the flange 1 between the pressure plate 14 and the machine base 11, so that the flange 1 and the exhaust pipe 2 can be welded together by the welding equipment. The worker also needs to hold the inner ring 5 of the support component by hand at all times so that the flange 1, the exhaust pipe 2 and the support component are in the welding position. Both of these processes are completed manually by the worker, which not only increases the worker's welding workload, but also reduces the welding efficiency of the exhaust component.

[0020] II. In step S4, the worker needs to perform the first welding process to weld the first annular weld scar 8 at the contact point between the inner wall of the flange 1 and the inner wall of the exhaust pipe 2, so that the flange 1 can be welded onto the exhaust pipe 2. In step S5, the worker needs to perform the second welding process to weld the second annular weld scar 9 at the contact point between the lower edge of the outer annular ring 6 of the support and the inner wall of the exhaust pipe 2. Then, the worker needs to perform the third welding process to form the third annular weld scar 10 at the contact point between the upper edge of the outer annular ring 6 of the support and the inner wall of the exhaust pipe 2, so that the support can be welded into the exhaust pipe 2, and finally the first exhaust assembly can be welded into shape.

[0021] In other words, a total of three welding processes are required to weld a smoke exhaust assembly. This undoubtedly increases the number of welding processes, making it take a long time to weld a smoke exhaust assembly, thus reducing the welding efficiency of the smoke exhaust assembly.

[0022] Therefore, there is an urgent need for a welding forming device and method that can greatly reduce the welding workload of workers and greatly improve the welding forming efficiency of smoke exhaust components. Summary of the Invention

[0023] The purpose of this invention is to overcome the shortcomings of the prior art and provide a welding and forming device and method for the flue gas assembly of a waste incinerator.

[0024] The objective of this invention is achieved through the following technical solution: a welding and forming device for the flue gas assembly of a waste incinerator, comprising an arched frame fixed to the top surface of a pad, two lifting cylinders being provided on the crossbeam of the arched frame, the piston rods of the two lifting cylinders penetrating downward through the crossbeam of the arched frame, and a fixed column being connected to the extended end; a main welding assembly for simultaneously welding and forming a first annular weld scar and a second annular weld scar is provided between the two fixed columns; and a secondary welding assembly for welding and forming a third annular weld scar is provided on the crossbeam of the arched frame.

[0025] The main welding assembly includes a platform fixed between the bottom ends of two fixed columns, two guide columns fixed on the platform, and a positioning platform fixed between the upper ends of the two guide columns. The positioning platform has a positioning step hole. Two lifting cylinders are fixed on the top surface of the platform. Both lifting cylinders are located between the two guide columns. A lifting plate that is slidably installed on the guide columns is fixed between the piston rods of the two lifting cylinders.

[0026] A U-shaped component is fixed on the top surface of the lifting plate. A hollow fixed cylinder located directly below the positioning step hole is fixed inside the U-shaped component. A support plate and a cylinder body are sequentially fixed at the top of the hollow fixed cylinder. Strip-shaped pressure blocks are slidably installed inside the left and right side walls of the cylinder body. Support blocks are fixed on the strip-shaped pressure blocks. A spring is fixed between the support blocks and the inner wall of the cylinder body.

[0027] A driven gear A is rotatably mounted on the outside of the hollow fixed cylinder. An upwardly extending vertical plate is fixed on the top surface of the driven gear A. A first connecting plate and a second connecting plate are fixed on the right end face of the extension end of the vertical plate. The first connecting plate is tilted to the right and downward and a first laser welding head is fixed inside the extension end. The second connecting plate is tilted to the right and upward and a second laser welding head is fixed inside the extension end.

[0028] The lifting plate is rotatably mounted with a driven shaft and a driving shaft. A transmission assembly is provided between the driven shaft and the driving shaft. The driven shaft passes through the hollow fixed cylinder, the support plate, and the cylinder body sequentially along the axial direction, and a rectangular head is fixed on the extended end. A drive motor is fixed on the bottom surface of the lifting plate, and the output shaft of the drive motor is connected to the bottom end of the driving shaft.

[0029] The lifting plate has two guide holes that correspond to the two guide posts respectively, and the two guide posts slide in conjunction with the two guide holes respectively.

[0030] The diameter of the large hole in the positioning step is equal to the outer diameter of the flange; the outer diameter of the cylinder is equal to the inner diameter of the inner annular ring of the support component.

[0031] Radial holes are provided in the left and right side walls of the cylinder, and two strip-shaped pressure blocks are slidably installed in the two radial holes respectively.

[0032] The hollow fixed cylinder is fixed to the outside of a ball bearing, and the driven gear A is fixed to the outer ring of the ball bearing.

[0033] The transmission assembly includes a driven gear B fixed at the bottom end of the driven shaft, a driving gear A fixed on the driving shaft, and a driving gear B. The driving gear A meshes with the driven gear A, and the driving gear B meshes with the driven gear B.

[0034] The auxiliary welding assembly is located directly above the main welding assembly. The auxiliary welding assembly includes a rotating shaft rotatably installed in the arched frame beam and an adapter cylinder fixed to the bottom of the rotating shaft. A torsion spring is sleeved on the rotating shaft, and the upper and lower ends of the torsion spring are respectively fixed to the beam and the adapter cylinder. A rectangular blind groove is formed on the bottom surface of the adapter cylinder along its axial direction. The rectangular blind groove is located directly above the rectangular head. A conical surface is formed on the outer side of the lower end of the adapter cylinder. The conical surface is located directly above the rounded corners of the two strip-shaped pressure blocks.

[0035] The auxiliary welding assembly also includes two L-shaped clamping blocks fixed on the bottom surface of the arched frame beam and a third connecting plate fixed on the outer cylindrical surface of the adapter tube. The two L-shaped clamping blocks are located on the left and right sides of the adapter tube, respectively. The third connecting plate is tilted to the right and downward, and a third laser welding head is fixed inside the extended end.

[0036] The welding forming device also includes a controller, which is electrically connected to the lifting cylinder, the jacking cylinder, the drive motor and the welding equipment via signal lines. The welding equipment is electrically connected to the first laser welding head, the second laser welding head and the third laser welding head via signal lines.

[0037] A method for welding and forming a flue gas assembly for a waste incinerator, comprising the following steps:

[0038] S1. The worker takes out a support component and puts the inner annular ring of the support component on the outside of the cylinder of the main welding assembly from top to bottom. The inner annular ring is then placed flat on the top surface of the support plate. Since the outer diameter of the cylinder is equal to the inner diameter of the inner annular ring of the support component, the support component is positioned. At this time, the second laser welding head faces the outer edge of the outer annular ring of the support component.

[0039] S2. The worker takes out a flange and inserts it from top to bottom into the large hole of the positioning step hole of the positioning platform of the main welding assembly, thereby positioning the flange. At this time, the countersunk hole and the center hole of the flange are connected to the small hole of the positioning step hole.

[0040] S3. The worker takes out a smoke exhaust pipe and inserts it into the countersunk hole of the flange from top to bottom, thus positioning the smoke exhaust pipe. At this time, the smoke exhaust pipe is directly above the support component, and the left and right side walls of the smoke exhaust pipe are directly below the two L-shaped clamping blocks of the secondary welding component.

[0041] S4. Lift the support component to the designated position inside the exhaust pipe: The piston rods of the two lifting cylinders of the main welding assembly extend upwards, and the piston rods drive the lifting plate to move upwards along the guide column. The lifting plate drives the drive shaft, driven shaft, hollow fixed cylinder, drive motor, transmission assembly, support plate, hollow fixed cylinder and rectangular head to move upwards synchronously.

[0042] The hollow fixed cylinder drives the driven gear A, the vertical plate, the first connecting plate, the first laser welding head, the second connecting plate, and the second laser welding head to move upward synchronously; the support plate drives the support component, the cylinder body, and the two strip-shaped pressure blocks to move upward synchronously. The support component passes through the small hole of the positioning step hole of the positioning table and the center hole of the flange in sequence, and finally enters the exhaust pipe.

[0043] When the piston rods of the two lifting cylinders are fully extended, the support is lifted to the designated position of the exhaust pipe. At this time, the upper and lower edges of the outer annular ring of the support are in contact with the inner wall of the exhaust pipe, and the first laser welding head is facing the inner wall of the flange and in contact with the inner wall of the exhaust pipe, while the second laser welding head is facing the lower edge of the outer annular ring of the support and in contact with the inner wall of the exhaust pipe.

[0044] S5. Control the piston rods of the two lifting cylinders to retract upwards. The piston rods drive the fixed column to move upwards. The fixed column drives the platform to move upwards. The platform drives the guide column, positioning table, lifting cylinder, lifting plate, drive shaft, driven shaft, U-shaped part, hollow fixed cylinder, drive motor, transmission assembly, support plate, hollow fixed cylinder and rectangular head to move upwards synchronously.

[0045] The positioning platform drives the flange and exhaust pipe to move upward synchronously; the hollow fixed cylinder drives the driven gear A, the second connecting plate and the second laser welding head to move upward synchronously; the support plate drives the support components, the cylinder and the two strip pressure blocks to move upward synchronously.

[0046] When the piston rods of the two lifting cylinders retract upwards a certain distance, the rectangular head is inserted into the rectangular blind groove of the adapter cylinder of the auxiliary welding assembly, and the rounded corners of the two strip-shaped pressure blocks are in contact with the conical surface of the adapter cylinder.

[0047] As the piston rods of the two lifting cylinders continue to retract upwards, the conical surface of the adapter cylinder presses down on the rounded corners of the two strip-shaped pressure blocks. After the two strip-shaped pressure blocks are pressed by the conical surface, they move along the radial direction of the cylinder towards the inner annular ring of the support component.

[0048] After the piston rods of the two lifting cylinders are fully retracted, the two strip-shaped pressure blocks fix the inner annular ring of the support component. At the same time, the flange and the exhaust pipe are fixed between the L-shaped pressure block and the positioning table by the tooling. Meanwhile, the third laser welding head is facing the upper edge of the outer annular ring of the support component and contacts the inner wall of the exhaust pipe. At this time, the flange, exhaust pipe and support component are in the welding position.

[0049] S6. Control the laser equipment to start. The laser beam emitted by the first laser welding head irradiates the contact point between the inner wall of the flange and the inner wall of the exhaust pipe to begin welding the flange and the exhaust pipe together. At the same time, the laser beam emitted by the second laser welding head irradiates the contact point between the lower edge of the outer annular ring of the support and the inner wall of the exhaust pipe to begin welding the lower edge of the outer annular ring to the inner wall of the exhaust pipe. At the same time, the laser beam emitted by the third laser welding head irradiates the contact point between the upper edge of the outer annular ring of the support and the inner wall of the exhaust pipe to begin welding the upper edge of the outer annular ring to the inner wall of the exhaust pipe.

[0050] S7. Start the drive motor of the main welding assembly. The drive motor drives the drive shaft to rotate. The drive shaft drives the drive gear A and drive gear B to rotate synchronously. The drive gear A drives the driven gear A to rotate around the axis of the hollow fixed cylinder. The driven gear A drives the vertical plate, the first connecting plate and the second connecting plate to rotate synchronously. The first connecting plate and the second connecting plate respectively drive the first laser welding head and the second laser welding head to rotate circumferentially around the axis of the exhaust pipe.

[0051] At the same time, the driving gear B drives the driven gear B to rotate around its own axis, the driven gear B drives the driven shaft to rotate, the driven shaft drives the rectangular head to rotate, the rectangular head drives the adapter cylinder of the auxiliary welding assembly to rotate synchronously, and the adapter cylinder drives the torsion spring to rotate synchronously during the process of torsion deformation, and the third connecting plate also drives the third laser welding head to rotate circumferentially around the axis of the exhaust pipe.

[0052] After the first laser welding head rotates one full circle, the first annular weld scar can be formed at the contact point between the inner wall of the flange and the inner wall of the exhaust pipe, thereby achieving the welding of the flange and the exhaust pipe together.

[0053] After the second laser welding head rotates one full circle, a second annular weld scar is formed at the contact point between the lower edge of the outer annular ring of the support component and the inner wall of the exhaust pipe. After the third laser welding head rotates one full circle, a third annular weld scar is formed at the contact point between the upper edge of the outer annular ring of the support component and the inner wall of the exhaust pipe. This allows the support component to be welded into the exhaust pipe, thus ultimately forming the first exhaust assembly.

[0054] S8. Remove the welded smoke exhaust assembly. The specific steps are as follows:

[0055] S81. Control the welding equipment to shut down, and then control the drive motor to shut down. Both the drive shaft and the driven shaft stop rotating, and the first laser welding head, the first laser welding head and the third laser welding head all stop rotating.

[0056] S82. Control the piston rods of the two lifting cylinders to extend downwards. The piston rods drive the platform to move downwards. The platform drives the lifting cylinder, lifting plate, positioning platform, cylinder, strip pressure block, rectangular head, and smoke exhaust assembly to move downwards synchronously. When the strip pressure block separates from the conical surface of the adapter cylinder, it returns to the inside of the cylinder under the elastic restoring force of the spring. When the rectangular head exits from the rectangular blind groove of the adapter cylinder, it returns to the initial state under the torsion of the torsion spring.

[0057] S83, the piston rod of the control lifting cylinder retracts downward, the piston rod drives the lifting plate to move downward, the lifting plate drives the drive shaft, driven shaft, hollow fixed cylinder and cylinder body to move downward, thereby causing the first laser welding head and the second laser welding head to move to the bottom of the exhaust pipe of the exhaust assembly;

[0058] S84. The worker removes the welded smoke exhaust assembly from the positioning table;

[0059] S9. Workers can repeat steps S1 to S8 multiple times to weld and form multiple smoke exhaust components.

[0060] The present invention has the following advantages: it greatly reduces the welding workload of workers and greatly improves the welding efficiency of the smoke exhaust assembly. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the smoke extraction assembly.

[0062] Figure 2 for Figure 1 Main section diagram;

[0063] Figure 3 This is a structural diagram of a tooling fixture in the prior art;

[0064] Figure 4 This is a schematic diagram of the flange structure;

[0065] Figure 5 for Figure 4 Main section diagram;

[0066] Figure 6 A schematic diagram showing how to place a flange flat on the top surface of a tooling fixture.

[0067] Figure 7 This is a schematic diagram of the smoke exhaust pipe.

[0068] Figure 8 for Figure 7 Main section diagram;

[0069] Figure 9 A schematic diagram showing how the exhaust pipe and flange are tooled and fixed between the pressure plate and the machine base;

[0070] Figure 10 This is a structural schematic diagram of the support component;

[0071] Figure 11 for Figure 10 Main section diagram;

[0072] Figure 12 A schematic diagram showing the insertion of the support component into the exhaust pipe and the holding of the inner ring of the support component in place by hand;

[0073] Figure 13 This is a schematic diagram showing the laser welding head aligned with the contact point between the inner wall of the flange and the inner wall of the exhaust pipe.

[0074] Figure 14 A schematic diagram showing the alignment of the laser welding head with the contact point between the lower edge of the outer annular ring of the support component and the inner wall of the exhaust pipe;

[0075] Figure 15 A diagram showing the point where the laser welding head contacts the upper edge of the outer annular ring of the support component and the inner wall of the exhaust pipe.

[0076] Figure 16 This is a schematic diagram of the structure of the present invention;

[0077] Figure 17 for Figure 16 M-direction schematic diagram;

[0078] Figure 18 for Figure 16 A schematic diagram of the partial cross-section;

[0079] Figure 19 for Figure 18 A magnified view of part I;

[0080] Figure 20 This is a schematic diagram of the main welding assembly of the present invention;

[0081] Figure 21 for Figure 20 P-direction schematic diagram;

[0082] Figure 22 for Figure 20 A schematic diagram of the partial cross-section;

[0083] Figure 23 This is a schematic diagram showing the connection between the driven shaft and the rectangular head;

[0084] Figure 24 This is a schematic diagram of the connection of the adapter cylinder shaft;

[0085] Figure 25 for Figure 24 Main section diagram;

[0086] Figure 26 A schematic diagram showing the inner annular ring of the support component being fitted onto the outside of the cylinder from top to bottom;

[0087] Figure 27 for Figure 26 A magnified view of part II;

[0088] Figure 28 This is a schematic diagram showing how to insert the flange into the large hole of the positioning step hole from top to bottom;

[0089] Figure 29 This is a schematic diagram showing the insertion of the exhaust pipe into the countersunk hole of the flange from top to bottom.

[0090] Figure 30 This is a schematic diagram showing how the support structure is lifted to the designated position on the exhaust pipe.

[0091] Figure 31 for Figure 30 A magnified view of part III;

[0092] Figure 32 A schematic diagram showing the rectangular head being inserted into the rectangular blind groove of the adapter tube of the secondary welding assembly;

[0093] Figure 33 for Figure 32 A magnified view of part IV;

[0094] Figure 34 A schematic diagram showing how two strip-shaped pressure blocks fix the inner annular ring of the support component.

[0095] Figure 35 A schematic diagram showing how the first annular weld scar is formed at the contact point between the inner wall of the flange and the inner wall of the exhaust pipe.

[0096] Figure 36 A diagram illustrating the removal of the smoke extraction assembly;

[0097] In the picture:

[0098] 1-Flange, 2-Exhaust pipe, 3-Center hole, 4-Counterhead, 5-Inner annular ring, 6-Outer annular ring, 7-Steel bar, 8-First annular weld scar, 9-Second annular weld scar, 10-Third annular weld scar;

[0099] 11-Machine base, 12-Through groove, 13-Threaded column, 14-Pressure plate, 15-Laser welding head;

[0100] 16-Plate, 17-Arch frame, 18-Lifting cylinder, 19-Fixed column, 20-Platform, 21-Guide column, 22-Positioning platform, 23-Positioning step hole, 24-Lifting cylinder, 25-Lifting plate;

[0101] 26-U-shaped part, 27-hollow fixed cylinder, 28-support plate, 29-cylinder body, 30-strip pressure block, 31-spring, 32-driven gear A, 33-vertical plate, 34-first connecting plate, 35-second connecting plate, 36-first laser welding head, 37-second laser welding head;

[0102] 38-Driven shaft, 39-Driven shaft, 40-Rectangular head, 41-Drive motor, 42-Driven gear B, 43-Driven gear A, 44-Driven gear B;

[0103] 45-Spindle, 46-Adapter cylinder, 47-Torsion spring, 48-Rectangular blind groove, 49-Conical surface, 50-L-shaped clamping block, 51-Third connecting plate, 52-Third laser welding head. Detailed Implementation

[0104] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0105] like Figures 16-25As shown, a welding and forming device for the exhaust assembly of a waste incinerator includes an arched frame 17 fixed to the top surface of a pad 16. Two lifting cylinders 18 are provided on the crossbeam of the arched frame 17. The piston rods of the two lifting cylinders 18 extend downward through the crossbeam of the arched frame 17, and a fixed column 19 is connected to the extended end. A main welding assembly for simultaneously welding and forming a first annular weld scar 8 and a second annular weld scar 9 is provided between the two fixed columns 19. A secondary welding assembly for welding and forming a third annular weld scar 10 is provided on the crossbeam of the arched frame 17.

[0106] The main welding assembly includes a platform 20 fixed between the bottom ends of two fixed columns 19, two guide columns 21 fixed on the platform 20, and a positioning platform 22 fixed between the upper ends of the two guide columns 21. The positioning platform 22 has a positioning step hole 23. Two lifting cylinders 24 are fixed on the top surface of the platform 20. Both lifting cylinders 24 are located between the two guide columns 21. A lifting plate 25 slidably mounted on the guide column 21 is fixed between the piston rods of the two lifting cylinders 24. The diameter of the large hole of the positioning step hole 23 is equal to the outer diameter of the flange 1. The outer diameter of the cylinder 29 is equal to the inner diameter of the inner annular ring 5 of the support member.

[0107] A U-shaped component 26 is fixedly provided on the top surface of the lifting plate 25. A hollow fixed cylinder 27 located directly below the positioning step hole 23 is fixedly provided inside the U-shaped component 26. A support plate 28 and a cylinder 29 are sequentially fixed at the top of the hollow fixed cylinder 27. Strip-shaped pressure blocks 30 are slidably installed inside the left and right side walls of the cylinder 29. Support blocks are fixed on the strip-shaped pressure blocks 30. A spring 31 is fixed between the support blocks and the inner wall of the cylinder 29.

[0108] A driven gear A32 is rotatably mounted on the outside of the hollow fixed cylinder 27. An upwardly extending vertical plate 33 is fixed on the top surface of the driven gear A32. A first connecting plate 34 and a second connecting plate 35 are fixed on the right end face of the extension end of the vertical plate 33. The first connecting plate 34 is inclined to the right and downward and a first laser welding head 36 is fixed inside the extension end. The second connecting plate 35 is inclined to the right and upward and a second laser welding head 37 is fixed inside the extension end. A ball bearing is fixed on the outside of the hollow fixed cylinder 27, and the driven gear A32 is sleeved and fixed on the outer ring of the ball bearing.

[0109] A driven shaft 38 and a driving shaft 39 are rotatably mounted inside the lifting plate 25. A transmission assembly is provided between the driven shaft 38 and the driving shaft 39. The driven shaft 38 passes through the hollow fixed cylinder 27, the support plate 28, and the cylinder 29 sequentially along the axial direction, and a rectangular head 40 is fixed on its extended end. A drive motor 41 is fixed on the bottom surface of the lifting plate 25, and the output shaft of the drive motor 41 is connected to the bottom end of the driving shaft 39. The transmission assembly includes a driven gear B42 fixed at the bottom end of the driven shaft 38, and a driving gear A43 and a driving gear B44 fixed on the driving shaft 39. The driving gear A43 meshes with the driven gear A32, and the driving gear B44 meshes with the driven gear B42.

[0110] The lifting plate 25 has two guide holes corresponding to the two guide posts 21, and the two guide posts 21 are slidably engaged with the two guide holes. Radial holes are provided on both the left and right side walls of the cylinder 29, and two strip-shaped pressure blocks 30 are slidably installed in the two radial holes.

[0111] The auxiliary welding assembly is located directly above the main welding assembly. The auxiliary welding assembly includes a rotating shaft 45 rotatably installed in the crossbeam of the arch frame 17 and an adapter cylinder 46 fixed to the bottom of the rotating shaft 45. A torsion spring 47 is sleeved on the rotating shaft 45. The upper and lower ends of the torsion spring 47 are fixed to the crossbeam and the adapter cylinder 46, respectively. A rectangular blind groove 48 is formed on the bottom surface of the adapter cylinder 46 along its axial direction. The rectangular blind groove 48 is located directly above the rectangular head 40. A tapered surface 49 is formed on the outer side of the lower end of the adapter cylinder 46. The tapered surface 49 is located directly above the rounded corners of the two strip-shaped pressure blocks 30.

[0112] The auxiliary welding assembly also includes two L-shaped clamping blocks 50 fixed on the bottom surface of the crossbeam of the arch frame 17 and a third connecting plate 51 fixed on the outer column surface of the adapter cylinder 46. The two L-shaped clamping blocks 50 are located on the left and right sides of the adapter cylinder 46, respectively. The third connecting plate 51 is tilted to the right and downward, and a third laser welding head 52 is fixed inside the extended end.

[0113] The welding forming device also includes a controller, which is electrically connected to the lifting cylinder 18, the lifting cylinder 24, the drive motor 41 and the welding equipment via signal lines. The welding equipment is electrically connected to the first laser welding head 36, the second laser welding head 37 and the third laser welding head 52 via signal lines. The controller can control the extension or retraction of the piston rods of the lifting cylinder 18 and the lifting cylinder 24, and can also control the start of the welding equipment.

[0114] A method for welding and forming a flue gas assembly for a waste incinerator, comprising the following steps:

[0115] S1, the worker takes out a... Figures 10-11The support member shown is fitted with its inner annular ring 5 from top to bottom onto the outside of the main welded assembly's cylinder 29, as shown. Figures 26-27 As shown, the inner annular ring 5 is placed flat on the top surface of the support plate 28. Since the outer diameter of the cylinder 29 is equal to the inner diameter of the inner annular ring 5 of the support, the support is positioned. At this time, the second laser welding head 37 faces the outer edge of the outer annular ring 6 of the support.

[0116] S2, The worker takes out a... Figures 4-5 As shown, flange 1 is inserted from top to bottom into the large hole of the positioning step hole 23 of the positioning platform 22 of the main welding assembly, as shown. Figure 28 As shown, this achieves the positioning of flange 1. At this time, the countersunk hole 4 and the center hole 3 of flange 1 are connected to the small hole of the positioning step hole 23.

[0117] S3, The worker takes out a... Figures 7-8 As shown, the exhaust pipe 2 is inserted from top to bottom into the countersunk hole 4 of the flange 1, as shown. Figure 29 As shown, this achieves the positioning of the exhaust pipe 2. At this time, the exhaust pipe 2 is located directly above the support, and the left and right side walls of the exhaust pipe 2 are respectively directly below the two L-shaped clamping blocks 50 of the auxiliary welding assembly.

[0118] S4. Lift the support component to the designated position inside the exhaust pipe 2: The piston rods of the two lifting cylinders 24 of the main welding assembly extend upwards, and the piston rods drive the lifting plate 25 to move upwards along the guide column 21. The lifting plate 25 drives the drive shaft 39, driven shaft 38, hollow fixed cylinder 27, drive motor 41, transmission assembly, support plate 28, hollow fixed cylinder 27 and rectangular head 40 to move upwards synchronously.

[0119] The hollow fixed cylinder 27 drives the driven gear A32, the vertical plate 33, the first connecting plate 34, the first laser welding head 36, the second connecting plate 35, and the second laser welding head 37 to move upward synchronously; the support plate 28 drives the support member, the cylinder 29, and the two strip-shaped pressure blocks 30 to move upward synchronously. The support member passes through the small hole of the positioning step hole 23 of the positioning table 22 and the center hole 3 of the flange 1 in sequence, and finally enters the exhaust pipe 2.

[0120] When the piston rods of the two lifting cylinders 24 are fully extended, the support component is lifted to the designated position on the exhaust pipe 2, such as... Figures 30-31 As shown, at this time, the upper and lower edges of the outer annular ring 6 of the support component are in contact with the inner wall of the exhaust pipe 2, and the first laser welding head 36 faces the point where the inner wall of the flange 1 contacts the inner wall of the exhaust pipe 2, and the second laser welding head 37 faces the point where the lower edge of the outer annular ring 6 of the support component contacts the inner wall of the exhaust pipe 2, as shown. Figure 31 As shown;

[0121] S5. Control the piston rods of the two lifting cylinders 18 to retract upwards. The piston rods drive the fixed column 19 to move upwards. The fixed column 19 drives the platform 20 to move upwards. The platform 20 drives the guide column 21, positioning table 22, lifting cylinder 24, lifting plate 25, drive shaft 39, driven shaft 38, U-shaped part 26, hollow fixed cylinder 27, drive motor 41, transmission assembly, support plate 28, hollow fixed cylinder 27 and rectangular head 40 to move upwards synchronously.

[0122] Among them, the positioning platform 22 drives the flange 1 and the exhaust pipe 2 to move upward synchronously; the hollow fixed cylinder 27 drives the driven gear A32, the second connecting plate 35 and the second laser welding head 37 to move upward synchronously; and the support plate 28 drives the support component, the cylinder 29 and the two strip pressure blocks 30 to move upward synchronously.

[0123] After the piston rods of the two lifting cylinders 18 retract upward a certain distance, the rectangular head 40 is inserted into the rectangular blind groove 48 of the adapter cylinder 46 of the auxiliary welding assembly, such as Figures 32-33 As shown, the rounded corners of both strip-shaped pressure blocks 30 are in contact with the conical surface 49 of the adapter cylinder 46;

[0124] As the piston rods of the two lifting cylinders 18 continue to retract upwards, the conical surface 49 of the adapter cylinder 46 presses down on the rounded corners of the two strip-shaped pressure blocks 30. When the two strip-shaped pressure blocks 30 are pressed by the conical surface 49, the two strip-shaped pressure blocks 30 move along the radial direction of the cylinder 29 toward the inner annular ring 5 of the support.

[0125] After the piston rods of the two lifting cylinders 18 are fully retracted, the two strip-shaped pressure blocks 30 fix the inner annular ring 5 of the support component in place. Figure 34 As shown, at the same time, flange 1 and exhaust pipe 2 are fixed between L-shaped clamping block 50 and positioning table 22 by tooling. Meanwhile, the third laser welding head 52 is facing the upper edge of the outer annular ring 6 of the support and is in contact with the inner wall of exhaust pipe 2. At this time, flange 1, exhaust pipe 2 and support are in the welding position.

[0126] S6. Control the laser equipment to start. The laser beam emitted by the first laser welding head 36 irradiates the contact point between the inner wall of the flange 1 and the inner wall of the exhaust pipe 2 to begin welding the flange 1 and the exhaust pipe 2 together. At the same time, the laser beam emitted by the second laser welding head 37 irradiates the contact point between the lower edge of the outer annular ring 6 of the support member and the inner wall of the exhaust pipe 2 to begin welding the lower edge of the outer annular ring 6 and the inner wall of the exhaust pipe 2 together. At the same time, the laser beam emitted by the third laser welding head 52 irradiates the contact point between the upper edge of the outer annular ring 6 of the support member and the inner wall of the exhaust pipe 2 to begin welding the upper edge of the outer annular ring 6 and the inner wall of the exhaust pipe 2 together.

[0127] S7. The drive motor 41 of the main welding assembly is started, and the drive motor 41 drives the drive shaft 39 to rotate. The rotation direction of the drive shaft 39 is as follows: Figure 35 As shown by the solid arrow, the drive shaft 39 drives the drive gear A43 and drive gear B44 to rotate synchronously. The drive gear A43 drives the driven gear A32 to rotate around the axis of the hollow fixed cylinder 27. The driven gear A32 drives the vertical plate 33, the first connecting plate 34 and the second connecting plate 35 to rotate synchronously. The first connecting plate 34 and the second connecting plate 35 respectively drive the first laser welding head 36 and the second laser welding head 37 to rotate circumferentially around the axis of the exhaust pipe 2.

[0128] Simultaneously, the driving gear B44 drives the driven gear B42 to rotate around its own axis, and the driven gear B42 drives the driven shaft 38 to rotate. The direction of rotation of the driven shaft 38 is as follows: Figure 35 As shown by the hollow arrow, the driven shaft 38 drives the rectangular head 40 to rotate, and the rectangular head 40 drives the adapter cylinder 46 of the sub-welding assembly to rotate synchronously. The rotation direction of the adapter cylinder 46 is as follows. Figure 35 As shown by the hollow arrow, during the process of the torsion spring 47 being twisted and deformed, the adapter cylinder 46 also drives the third connecting plate 51 to rotate synchronously. The third connecting plate 51 drives the third laser welding head 52 to rotate circumferentially around the axis of the exhaust pipe 2.

[0129] After the first laser welding head rotates 36 degrees, a first annular weld scar 8 can be formed at the contact point between the inner wall of flange 1 and the inner wall of exhaust pipe 2, as shown below. Figure 35 As shown, this allows flange 1 to be welded to exhaust pipe 2.

[0130] After the second laser welding head 37 rotates one full circle, a second annular weld scar 9 can be formed at the contact point between the lower edge of the outer annular ring 6 of the support component and the inner wall of the exhaust pipe 2. Figure 35 As shown; after the third laser welding head 52 rotates one revolution, a third annular weld scar 10 can be formed at the contact point between the upper edge of the outer annular ring 6 of the support component and the inner wall of the exhaust pipe 2, as shown. Figure 35 As shown, this allows the support components to be welded into the smoke exhaust pipe 2, thus ultimately forming the first smoke exhaust assembly. The structure of this smoke exhaust assembly is as follows: Figures 1-2 As shown;

[0131] As can be seen from step S7, the worker only needs to control the start of the drive motor 41 to weld the first annular weld scar 8 at the contact point between the inner wall of the flange 1 and the inner wall of the exhaust pipe 2, so as to weld the flange 1 and the exhaust pipe 2 together; at the same time, the second annular weld scar 9 is welded at the contact point between the lower edge of the outer annular ring 6 of the support and the inner wall of the exhaust pipe 2, and the third annular weld scar 10 is welded at the contact point between the upper edge of the outer annular ring 6 of the support and the inner wall of the exhaust pipe 2, so as to weld the support inside the exhaust pipe 2, thereby welding the exhaust assembly.

[0132] Therefore, it can be seen that this welding forming device is superior to... Figures 3-15 The method shown eliminates the need for workers to perform three welding processes sequentially to weld the first annular weld scar 8, the second annular weld scar 9, and the third annular weld scar 10, and then weld a smoke exhaust assembly. This welding and forming device eliminates most of the welding processes, enabling the smoke exhaust assembly to be welded and formed in a short time, thereby greatly improving the welding and forming efficiency of the smoke exhaust assembly.

[0133] S8. Remove the welded smoke exhaust assembly. The specific steps are as follows:

[0134] S81, control the welding equipment to shut down, then control the drive motor 41 to shut down, the drive shaft 39 and the driven shaft 38 both stop rotating, and the first laser welding head 36, the first laser welding head 36 and the third laser welding head 52 all stop rotating;

[0135] S82. The piston rods of the two lifting cylinders 18 extend downwards, driving the platform 20 to move downwards. The platform 20 drives the lifting cylinder 24, lifting plate 25, positioning platform 22, cylinder 29, strip-shaped pressure block 30, rectangular head 40 and smoke exhaust assembly to move downwards synchronously. When the strip-shaped pressure block 30 separates from the conical surface 49 of the adapter cylinder 46, it returns to the cylinder 29 under the elastic restoring force of the spring 31. When the rectangular head 40 exits from the rectangular blind groove 48 of the adapter cylinder 46, it returns to the initial state under the torque of the torsion spring 47.

[0136] S83, the piston rod of the control lifting cylinder 24 retracts downward, the piston rod drives the lifting plate 25 to move downward, the lifting plate 25 drives the drive shaft 39, driven shaft 38, hollow fixed cylinder 27 and cylinder 29 to move downward, thereby causing the first laser welding head 36 and the second laser welding head 37 to move to the bottom of the exhaust pipe 2 of the exhaust assembly.

[0137] S84. The worker removes the welded smoke exhaust assembly from the positioning table 22, in the following direction: Figure 36 As indicated by the middle arrow;

[0138] S9. Workers can repeat steps S1 to S8 multiple times to weld and form multiple smoke exhaust components.

[0139] Furthermore, as can be seen from step S5, by controlling the piston rod of the lifting cylinder 18 to retract upward, the inner annular ring 5 of the support component can be fixed by the two strip-shaped pressure blocks 30. At the same time, the flange 1 and the exhaust pipe 2 are tooled and fixed between the L-shaped pressure block 50 and the positioning table 22, so that the flange 1, the exhaust pipe 2 and the support component are quickly and automatically placed in the welding position.

[0140] Therefore, it can be seen that this welding forming device is superior to... Figures 3-15 The method shown eliminates the need for workers to manually rotate the two pressure plates 14 downwards to fix the exhaust pipe 2 and flange 1 between the pressure plates 14 and the machine base 11. It also eliminates the need for workers to hold the inner annular ring 5 of the support component in place to ensure that the flange 1, exhaust pipe 2 and support component are in the welding position. This not only greatly reduces the welding workload of workers, but also greatly improves the welding efficiency of the exhaust assembly.

Claims

1. A welding and forming device for the flue gas assembly of a waste incinerator, comprising an arched frame (17) fixed to the top surface of a pad (16), wherein two lifting cylinders (18) are provided on the crossbeam of the arched frame (17), the piston rods of the two lifting cylinders (18) both penetrate downward through the crossbeam of the arched frame (17), and a fixed column (19) is connected to the extended end, characterized in that: A main welding assembly for simultaneously welding and forming the first annular weld scar (8) and the second annular weld scar (9) is provided between the two fixed columns (19), and a secondary welding assembly for welding and forming the third annular weld scar (10) is provided on the crossbeam of the arch frame (17). The main welding assembly includes a platform (20) fixed between the bottom ends of two fixed columns (19), two guide columns (21) fixed on the platform (20), and a positioning platform (22) fixed between the upper ends of the two guide columns (21). The positioning platform (22) has a positioning step hole (23). Two lifting cylinders (24) are fixed on the top surface of the platform (20). The two lifting cylinders (24) are located between the two guide columns (21). A lifting plate (25) that is slidably installed on the guide column (21) is fixed between the piston rods of the two lifting cylinders (24). A U-shaped piece (26) is fixed on the top surface of the lifting plate (25). A hollow fixed cylinder (27) located directly below the positioning step hole (23) is fixed inside the U-shaped piece (26). A support plate (28) and a cylinder (29) are fixed sequentially at the top of the hollow fixed cylinder (27). Strip-shaped pressure blocks (30) are slidably installed on the left and right side walls of the cylinder (29). A support block is fixed on the strip-shaped pressure block 30. A spring (31) is fixed between the support block and the inner wall of the cylinder (29). The hollow fixed cylinder (27) is rotatably mounted with a driven gear A (32). An upwardly extending vertical plate (33) is fixed on the top surface of the driven gear A (32). A first connecting plate (34) and a second connecting plate (35) are fixed on the right end face of the extension end of the vertical plate (33). The first connecting plate (34) is inclined to the right and downward and a first laser welding head (36) is fixed inside the extension end. The second connecting plate (35) is inclined to the right and upward and a second laser welding head (37) is fixed inside the extension end. A driven shaft (38) and a driving shaft (39) are rotatably installed inside the lifting plate (25). A transmission assembly is provided between the driven shaft (38) and the driving shaft (39). The driven shaft (38) passes through the hollow fixed cylinder (27), the support plate (28), and the cylinder (29) sequentially along the axial direction, and a rectangular head (40) is fixed on the extended end. A drive motor (41) is fixed on the bottom surface of the lifting plate (25), and the output shaft of the drive motor (41) is connected to the bottom end of the driving shaft (39). The auxiliary welding assembly is located directly above the main welding assembly. The auxiliary welding assembly includes a rotating shaft (45) rotatably installed in the crossbeam of the arch frame (17) and a transition cylinder (46) fixed at the bottom of the rotating shaft (45). A torsion spring (47) is sleeved on the rotating shaft (45). The upper and lower ends of the torsion spring (47) are fixed on the crossbeam and the transition cylinder (46) respectively. A rectangular blind groove (48) is provided on the bottom surface of the transition cylinder (46) along its axial direction. The rectangular blind groove (48) is located directly above the rectangular head (40). A conical surface (49) is provided on the outer side of the lower end of the transition cylinder (46). The conical surface (49) is located directly above the rounded corners of the two strip pressure blocks (30). The auxiliary welding assembly also includes two L-shaped clamping blocks (50) fixed on the bottom surface of the crossbeam of the arch frame (17) and a third connecting plate (51) fixed on the outer column surface of the adapter cylinder (46). The two L-shaped clamping blocks (50) are located on the left and right sides of the adapter cylinder (46) respectively. The third connecting plate (51) is tilted to the right and downward and a third laser welding head (52) is fixed inside the extended end.

2. The welding and forming device for the flue gas assembly of a waste incinerator according to claim 1, characterized in that: The lifting plate (25) has two guide holes that correspond to the two guide posts (21) respectively, and the two guide posts (21) slide in cooperation with the two guide holes respectively.

3. The welding and forming device for the flue gas assembly of a waste incinerator according to claim 2, characterized in that: The diameter of the large hole of the positioning step hole (23) is equal to the outer diameter of the flange (1); the outer diameter of the cylinder (29) is equal to the inner diameter of the inner annular ring (5) of the support.

4. The welding and forming device for the flue gas assembly of a waste incinerator according to claim 3, characterized in that: Radial holes are provided in the left and right side walls of the cylinder (29), and two strip-shaped pressure blocks (30) are slidably installed in the two radial holes respectively.

5. The welding and forming device for the flue gas assembly of a waste incinerator according to claim 4, characterized in that: The hollow fixed cylinder (27) is fixed with a ball bearing on its outside, and the driven gear A (32) is fixed on the outer ring of the ball bearing.

6. The welding and forming device for the flue gas assembly of a waste incinerator according to claim 5, characterized in that: The transmission assembly includes a driven gear B (42) fixed at the bottom end of the driven shaft (38), a driving gear A (43) and a driving gear B (44) fixed on the driving shaft (39), wherein the driving gear A (43) meshes with the driven gear A (32) and the driving gear B (44) meshes with the driven gear B (42).

7. The welding and forming device for the flue gas assembly of a waste incinerator according to claim 6, characterized in that: The welding forming device also includes a controller, which is electrically connected to the lifting cylinder (18), the jacking cylinder (24), the drive motor (41) and the welding equipment via signal lines. The welding equipment is electrically connected to the first laser welding head (36), the second laser welding head (37) and the third laser welding head (52) via signal lines.

8. A method for welding and forming a flue gas assembly of a waste incinerator, using the welding and forming device for a flue gas assembly of a waste incinerator as described in claim 7, characterized in that: It includes the following steps: S1. The worker takes out a support component and puts the inner annular ring (5) of the support component on the outside of the cylinder (29) of the main welding assembly from top to bottom. The inner annular ring (5) is placed flat on the top surface of the support plate (28). Since the outer diameter of the cylinder (29) is equal to the inner diameter of the inner annular ring (5) of the support component, the support component is positioned. At this time, the second laser welding head (37) faces the outer edge of the outer annular ring (6) of the support component. S2. The worker takes out a flange (1) and inserts the flange (1) from top to bottom into the large hole of the positioning step hole (23) of the positioning table (22) of the main welding assembly, thereby positioning the flange (1). At this time, the countersunk hole (4) and the center hole (3) of the flange (1) are connected to the small hole of the positioning step hole (23). S3. The worker takes out a smoke exhaust pipe (2) and inserts the smoke exhaust pipe (2) from top to bottom into the countersunk hole (4) of the flange (1), thereby positioning the smoke exhaust pipe (2). At this time, the smoke exhaust pipe (2) is located directly above the support, and the left and right side walls of the smoke exhaust pipe (2) are directly below the two L-shaped clamping blocks (50) of the auxiliary welding assembly. S4. Lift the support component to the designated position inside the exhaust pipe (2): The piston rods of the two lifting cylinders (24) of the main welding assembly extend upwards, and the piston rods drive the lifting plate (25) to move upwards along the guide column (21). The lifting plate (25) drives the drive shaft (39), driven shaft (38), hollow fixed cylinder (27), drive motor (41), transmission assembly, support plate (28), hollow fixed cylinder (27) and rectangular head (40) to move upwards synchronously. Among them, the hollow fixed cylinder (27) drives the driven gear A (32), the vertical plate (33), the first connecting plate (34), the first laser welding head (36), the second connecting plate (35), and the second laser welding head (37) to move upward synchronously; among them, the support plate (28) drives the support, the cylinder (29), and the two strip pressure blocks (30) to move upward synchronously. The support passes through the small hole of the positioning step hole (23) of the positioning table (22), the center hole (3) of the flange (1), and finally enters the exhaust pipe (2); When the piston rods of the two lifting cylinders (24) are fully extended, the support is lifted to the designated position of the exhaust pipe (2). At this time, the upper and lower edges of the outer annular ring (6) of the support are in contact with the inner wall of the exhaust pipe (2), and the first laser welding head (36) is facing the inner wall of the flange (1) in contact with the inner wall of the exhaust pipe (2), and the second laser welding head (37) is facing the lower edge of the outer annular ring (6) of the support in contact with the inner wall of the exhaust pipe (2). S5. Control the piston rods of the two lifting cylinders (18) to retract upwards. The piston rods drive the fixed column (19) to move upwards. The fixed column (19) drives the platform (20) to move upwards. The platform (20) drives the guide column (21), positioning table (22), lifting cylinder (24), lifting plate (25), drive shaft (39), driven shaft (38), U-shaped part (26), hollow fixed cylinder (27), drive motor (41), transmission assembly, support plate (28), hollow fixed cylinder (27) and rectangular head (40) to move upwards synchronously. Among them, the positioning platform (22) drives the flange (1) and the exhaust pipe (2) to move upward synchronously; among them, the hollow fixed cylinder (27) drives the driven gear A (32), the second connecting plate (35) and the second laser welding head (37) to move upward synchronously; among them, the support plate (28) drives the support, the cylinder (29) and the two strip pressure blocks (30) to move upward synchronously. When the piston rods of the two lifting cylinders (18) retract upward a certain distance, the rectangular head (40) is inserted into the rectangular blind groove (48) of the adapter cylinder (46) of the auxiliary welding assembly, and the rounded corners of the two strip pressure blocks (30) are in contact with the conical surface (49) of the adapter cylinder (46); As the piston rods of the two lifting cylinders (18) continue to retract upwards, the conical surface (49) of the adapter cylinder (46) presses down on the rounded corners of the two strip blocks (30). When the two strip blocks (30) are pressed by the conical surface (49), the two strip blocks (30) move along the radial direction of the cylinder (29) toward the inner annular ring (5) of the support. When the piston rods of the two lifting cylinders (18) are fully retracted, the two strip-shaped pressure blocks (30) fix the inner annular ring (5) of the support component. At the same time, the flange (1) and the exhaust pipe (2) are fixed by the tooling between the L-shaped pressure block (50) and the positioning table (22). Meanwhile, the third laser welding head (52) is facing the upper edge of the outer annular ring (6) of the support component and the inner wall of the exhaust pipe (2). At this time, the flange (1), the exhaust pipe (2) and the support component are in the welding position. S6. The laser equipment is started. The laser beam emitted by the first laser welding head (36) irradiates the contact point between the inner wall of the flange (1) and the inner wall of the exhaust pipe (2) to begin welding the flange (1) and the exhaust pipe (2) together. At the same time, the laser beam emitted by the second laser welding head (37) irradiates the contact point between the lower edge of the outer ring (6) of the support and the inner wall of the exhaust pipe (2) to begin welding the lower edge of the outer ring (6) and the inner wall of the exhaust pipe (2) together. At the same time, the laser beam emitted by the third laser welding head (52) irradiates the contact point between the upper edge of the outer ring (6) of the support and the inner wall of the exhaust pipe (2) to begin welding the upper edge of the outer ring (6) and the inner wall of the exhaust pipe (2) together. S7. The drive motor (41) of the main welding assembly is started. The drive motor (41) drives the drive shaft (39) to rotate. The drive shaft (39) drives the drive gear A (43) and drive gear B (44) to rotate synchronously. The drive gear A (43) drives the driven gear A (32) to rotate around the axis of the hollow fixed cylinder (27). The driven gear A (32) drives the vertical plate (33), the first connecting plate (34) and the second connecting plate (35) to rotate synchronously. The first connecting plate (34) and the second connecting plate (35) respectively drive the first laser welding head (36) and the second laser welding head (37) to rotate circumferentially around the axis of the exhaust pipe (2). At the same time, the driving gear B (44) drives the driven gear B (42) to rotate around its own axis, the driven gear B (42) drives the driven shaft (38) to rotate, the driven shaft (38) drives the rectangular head (40) to rotate, the rectangular head (40) drives the adapter cylinder (46) of the auxiliary welding assembly to rotate synchronously, and the adapter cylinder (46) drives the third connecting plate (51) to rotate synchronously during the process of causing the torsion spring (47) to twist and deform, and the third connecting plate (51) drives the third laser welding head (52) to rotate circumferentially around the axis of the exhaust pipe (2); After the first laser welding head (36) rotates around once, the first annular weld scar (8) can be formed at the contact point between the inner wall of the flange (1) and the inner wall of the exhaust pipe (2), thereby realizing the welding of the flange (1) and the exhaust pipe (2) together. When the second laser welding head (37) rotates around once, a second annular weld scar (9) can be formed at the contact point between the lower edge of the outer annular ring (6) of the support and the inner wall of the exhaust pipe (2); when the third laser welding head (52) rotates around once, a third annular weld scar (10) can be formed at the contact point between the upper edge of the outer annular ring (6) of the support and the inner wall of the exhaust pipe (2), thereby realizing the welding of the support inside the exhaust pipe (2), and finally welding the first exhaust component; S8. Remove the welded smoke exhaust assembly. The specific steps are as follows: S81, control the welding equipment to shut down, and then control the drive motor (41) to shut down. The drive shaft (39) and the driven shaft (38) both stop rotating, and the first laser welding head (36), the first laser welding head (36) and the third laser welding head (52) all stop rotating. S82. Control the piston rods of the two lifting cylinders (18) to extend downwards. The piston rods drive the platform (20) to move downwards. The platform (20) drives the lifting cylinder (24), lifting plate (25), positioning platform (22), cylinder (29), strip pressure block (30), rectangular head (40) and smoke exhaust assembly to move downwards synchronously. When the strip pressure block (30) separates from the conical surface (49) of the adapter cylinder (46), the strip pressure block (30) returns to the inside of the cylinder (29) under the elastic restoring force of the spring (31). When the rectangular head (40) exits from the rectangular blind groove (48) of the adapter cylinder (46), the adapter cylinder (46) returns to the initial state under the torque of the torsion spring (47). S83, the piston rod of the control lifting cylinder (24) retracts downward, the piston rod drives the lifting plate (25) to move downward, the lifting plate (25) drives the drive shaft (39), driven shaft (38), hollow fixed cylinder (27) and cylinder (29) to move downward, thereby causing the first laser welding head (36) and the second laser welding head (37) to move to the bottom of the exhaust pipe (2) of the exhaust assembly; S84. The worker removes the welded smoke exhaust assembly from the positioning table (22); S9. Workers can repeat steps S1 to S8 multiple times to weld and form multiple smoke exhaust components.

Images