Welding forming device and method for smoke exhaust assembly of garbage incinerator

Abstract

The invention discloses a welding forming device and method for a smoke exhaust assembly of a garbage incinerator, and relates to the technical field of welding forming of the smoke exhaust assembly for the garbage incinerator. A main welding assembly used for welding forming of a first annular crator and a second annular crator at the same time is arranged between two fixing columns; an auxiliary welding assembly used for welding and forming a third annular crator is arranged on a cross beam of the arch-shaped frame. A driven gear A is rotationally installed outside the hollow fixing cylinder, the first connecting plate inclines rightwards and downwards, a first laser welding head is fixedly arranged in the extending end of the first connecting plate, and the second connecting plate inclines rightwards and upwards, and a second laser welding head is fixedly arranged in the extending end of the second connecting plate. A driving motor is fixedly arranged on the bottom surface of the jacking plate, and an output shaft of the driving motor is connected with the bottom end of the driving shaft. The welding device has the beneficial effects that the welding work intensity of workers is greatly relieved, and the welding forming efficiency of the smoke exhaust assembly is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding forming a smoke exhaust assembly for a waste incinerator, and particularly to a welding forming device and method of a smoke exhaust assembly for a waste incinerator. BACKGROUND

[0002] The waste incinerator is used for incinerating domestic waste, and the slag generated in the incineration process is discharged from the end of the grate of the waste incinerator. Meanwhile, the flue gas is discharged from the smoke exhaust assembly located at the top of the waste incinerator to the subsequent purification equipment.

[0003] Each batch of waste incinerators is equipped with a smoke exhaust assembly, and the structure of the smoke exhaust assembly is as shown in Figures 1-2 It comprises a flange plate 1, a smoke exhaust pipe 2 and a supporting piece. A counterbore 4 is formed in the top surface of the flange plate 1 and is in communication with a central hole 3. The diameter of the counterbore 4 is equal to the outer diameter of the smoke exhaust pipe 2. The lower end of the smoke exhaust pipe 2 is inserted into the counterbore 4 of the flange plate 1, and a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2. The supporting piece comprises an inner annular ring 5 and an outer annular ring 6. A plurality of steel bars 7 are uniformly arranged between the inner annular ring 5 and the outer annular ring 6. The supporting piece is arranged in the smoke exhaust pipe 2. The lower edge of the outer annular ring 6 of the supporting piece is in contact with the inner wall of the smoke exhaust pipe 2, and a second annular welding scar 9 is formed by welding. The upper edge of the outer annular ring 6 of the supporting piece is in contact with the inner wall of the smoke exhaust pipe 2, and a third annular welding scar 10 is formed by welding. The supporting piece increases the mechanical strength of the smoke exhaust pipe 2 to prevent the smoke exhaust pipe 2 from being deformed by heat.

[0004] The method for workers to assemble a smoke exhaust assembly on each waste incinerator is as follows: the worker passes a screw through a flange hole of the flange plate 1 of the smoke exhaust assembly, and then threadedly connects it with the waste incinerator to assemble the smoke exhaust assembly on the waste incinerator. When the waste incinerator incinerates domestic waste, the flue gas sequentially passes through the central hole 3 of the flange plate 1, the lower port of the smoke exhaust pipe 2, and the area surrounded by the inner annular ring 5 and the outer annular ring 6 of the supporting piece, and is finally discharged from the upper port of the smoke exhaust pipe 2 to the subsequent purification equipment.

[0005] The workers in the workshop use a tooling fixture to cooperate with a laser welding device to weld and form the smoke exhaust assembly. The structure of the tooling fixture is as shown in Figure 3 It comprises a machine table 11 and a through slot 12 formed in the machine table 11. Threaded columns 13 are fixed on the top surface of the machine table 11 on the left and right sides of the through slot 12. Pressure plates 14 are threadedly connected to the two threaded columns 13. The specific welding forming method is as follows: S1, the worker takes out a flange plate 1 as shown in Figures 4-5 and places it flat on the top surface of the machine table 11 of the tooling fixture, as shown inFigure 6 The center hole 3 of the flange plate 1 is communicated with the through slot 12 of the machine table 11, and the center hole 3 of the flange plate 1 is communicated with the through slot 12 of the machine table 11; S2, the worker takes out a smoke exhaust pipe 2 as shown, and inserts the lower end of the smoke exhaust pipe 2 into the counterbore 4 of the flange plate 1 from top to bottom; Figures 7-8 S3, the worker rotates the two pressing plates 14 of the tooling fixture downward, so that the two pressing plates 14 are uniformly pressed on the top surface of the smoke exhaust pipe 2, thereby fixing the smoke exhaust pipe 2 and the flange plate 1 in the tooling between the pressing plates 14 and the machine table 11, as shown; S4, the worker takes out a support piece as shown, and then puts the support piece into the smoke exhaust pipe 2 from top to bottom, and holds the inner annular ring 5 of the support piece with his hand all the time, as shown; Figure 9 S5, the worker rotates the laser welding head 15 around the axis of the outer annular ring 6 of the support piece, and when the laser welding head 15 rotates one circle in the circumferential direction, a second annular welding scar 9 is formed at the position where the lower edge of the outer annular ring 6 of the support piece is in contact with the inner wall of the smoke exhaust pipe 2, as shown; Figures 10-11 S6, the worker removes the support piece from the smoke exhaust pipe 2, and then removes the tooling fixture from the machine table 11, as shown; Figure 12 S7, the worker rotates the flange plate 1 around the axis of the flange plate 1, and when the flange plate 1 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; S8, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; S9, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; Figure 13 S10, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; S11, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; S12, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; Figure 13 S13, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; S14, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; S15, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; Figure 14 S16, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; Figure 14 S17, the worker rotates the laser welding head 15 around the axis of the flange plate 1, and when the laser welding head 15 rotates one circle in the circumferential direction, a first annular welding scar 8 is formed at the position where the inner wall of the flange plate 1 is in contact with the inner wall of the smoke exhaust pipe 2, as shown; S52, the worker inserts the laser welding head 15 of the welding equipment into the smoke exhaust pipe 2 from the top port of the smoke exhaust pipe 2, and aligns the laser welding head 15 with the upper edge of the outer annular ring 6 of the support member in contact with the inner wall of the smoke exhaust pipe 2, as shown in Figure 15 ; then turns on the welding equipment, and the laser beam emitted by the laser welding head is irradiated on the contact position between the upper edge of the outer annular ring 6 and the inner wall of the smoke exhaust pipe 2 to start welding the upper edge of the outer annular ring 6 and the inner wall of the smoke exhaust pipe 2 together; then the worker rotates the laser welding head 15 around the axis of the outer annular ring 6, and after one circumferential rotation of the laser welding head 15, a third annular welding scar 10 is formed by welding at the contact position between the upper edge of the outer annular ring 6 of the support member and the inner wall of the smoke exhaust pipe 2, as shown in Figure 15 , thereby realizing welding of the support member in the smoke exhaust pipe 2, and finally welding the first smoke exhaust assembly. Figures 1-2 S6, the worker repeats the steps S1-S5 multiple times to weld multiple smoke exhaust assemblies.

[0006] However, although the worker can weld the smoke exhaust assembly by cooperation of the tooling fixture and the welding equipment, the following technical defects are still embodied in the actual operation: I, in step S3, the worker needs to manually rotate the two pressing plates 14 of the tooling fixture downward to fix the smoke exhaust pipe 2 and the flange plate 1 between the pressing plates 14 and the machine table 11, and then the welding equipment is used to weld the flange plate 1 and the smoke exhaust pipe 2 together; the worker also needs to hold the inner annular ring 5 of the support member with hands all the time to keep it from moving, and then the flange plate 1, the smoke exhaust pipe 2 and the support member are placed in the welding station; both of the two procedures are completed by manual operation of the worker, which not only increases the welding work intensity of the worker, but also reduces the welding forming efficiency of the smoke exhaust assembly.

[0007] II, in step S4, the worker needs to perform a first welding procedure to weld the first annular welding scar 8 at the contact position between the inner wall of the flange plate 1 and the inner wall of the smoke exhaust pipe 2, and then weld the flange plate 1 on the smoke exhaust pipe 2; in step S5, the worker needs to perform a second welding procedure to weld the second annular welding scar 9 at the contact position between the lower edge of the outer annular ring 6 of the support member and the inner wall of the smoke exhaust pipe 2; then a third welding procedure is performed to form the third annular welding scar 10 at the contact position between the upper edge of the outer annular ring 6 of the support member and the inner wall of the smoke exhaust pipe 2, and then the support member is welded in the smoke exhaust pipe 2, and finally the first smoke exhaust assembly is welded.

[0008] ​That is, three welding procedures need to be sequentially performed in total to weld and form a smoke exhaust assembly, which undoubtedly increases the welding procedures, causes a very long time to be consumed to weld and form a smoke exhaust assembly, and thus reduces the welding and forming efficiency of the smoke exhaust assembly.

[0009] Therefore, there is an urgent need for a welding and forming device and method which greatly reduce the welding work intensity of workers and greatly improve the welding and forming efficiency of a smoke exhaust assembly. SUMMARY

[0010] The present application aims to overcome the shortcomings of the prior art and provide a welding and forming device and method for a smoke exhaust assembly of a waste incinerator.

[0011] The present application is achieved by the following technical solutions: a welding and forming device for a smoke exhaust assembly of a waste incinerator, comprising an arcuate frame fixed on the top surface of a base plate, two lifting oil cylinders are arranged on the crossbeam of the arcuate frame, the piston rods of the two lifting oil cylinders are both downwardly penetrating through the crossbeam of the arcuate frame, and the extending ends of the piston rods are connected with two fixed columns, a main welding assembly for simultaneously welding and forming a first annular welding scar and a second annular welding scar is arranged between the two fixed columns, and a vice welding assembly for welding and forming a third annular welding scar is arranged on the crossbeam of the arcuate frame. The main welding assembly comprises a platform fixed between the bottom ends of the two fixed columns, two guide columns fixed on the platform, and a positioning table fixed between the upper end portions of the two guide columns, a positioning stepped hole is formed in the positioning table, the top surface of the platform is fixed with two jacking oil cylinders, the two jacking oil cylinders are both located between the two guide columns, and a jacking plate slidingly installed on the guide columns is fixed between the piston rods of the two jacking oil cylinders. A U-shaped piece is fixed on the top surface of the jacking plate, a hollow fixing cylinder located directly below the positioning stepped hole is fixed in the U-shaped piece, a support plate and a cylinder body are sequentially fixed on the top end of the hollow fixing cylinder, strip-shaped pressing blocks are slidingly installed in the left and right sidewalls of the cylinder body, support blocks are fixed on the strip-shaped pressing blocks, and springs are fixed between the support blocks and the inner wall of the cylinder body. A driven gear A is rotatably installed on the outside of the hollow fixing 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 surface of the extending end of the vertical plate, a first laser welding head is fixed in the extending end of the first connecting plate which is inclined downwardly to the right, and a second laser welding head is fixed in the extending end of the second connecting plate which is inclined upwardly to the right. A driven shaft and a driving shaft are rotatably installed in the jacking plate, a transmission assembly is arranged between the driven shaft and the driving shaft, the driven shaft sequentially penetrates through the hollow fixing cylinder, the support plate, and the cylinder body along the axial direction upwardly, and a rectangular head is fixed on the extending end of the driven shaft; a driving motor is fixed on the bottom surface of the jacking plate, and the output shaft of the driving motor is connected with the bottom end of the driving shaft.

[0012] Two guide holes corresponding to the two guide columns are formed in the jacking plate.

[0013] The diameter of the positioning step hole is equal to the outer diameter of the flange plate, and the outer diameter of the cylinder is equal to the inner diameter of the inner annular ring of the supporting piece.

[0014] Radial holes are formed in the left and right sidewalls of the cylinder, and two strip-shaped pressing blocks are slidingly installed in the two radial holes.

[0015] A ball bearing is fixedly arranged outside the hollow fixing cylinder, and the driven gear A is sleeved on the outer ring of the ball bearing.

[0016] The transmission assembly comprises a driven gear B fixedly arranged at the bottom end of the driven shaft, a driving gear A fixedly arranged on the driving shaft, and a driving gear B, the driving gear A is engaged with the driven gear A, and the driving gear B is engaged with the driven gear B.

[0017] The auxiliary welding assembly is located directly above the main welding assembly, and comprises a rotating shaft rotatably arranged in the arch-shaped frame beam, and a connecting cylinder fixedly arranged at the bottom of the rotating shaft, a torsional spring is sleeved on the rotating shaft, the upper and lower ends of the torsional spring are fixedly arranged on the beam and the connecting cylinder respectively, a rectangular blind groove is formed in the bottom surface of the connecting cylinder and extends along the axial direction of the connecting cylinder, the rectangular blind groove is located directly above the rectangular head, a conical surface is formed in the outer end of the bottom end of the connecting cylinder, and the conical surface is located directly above the rounded corners of the two strip-shaped pressing blocks. The auxiliary welding assembly further comprises two L-shaped pressing blocks fixedly arranged on the bottom surface of the arch-shaped frame beam, and a third connecting plate fixedly arranged on the outer cylindrical surface of the connecting cylinder, the two L-shaped pressing blocks are located on the left and right sides of the connecting cylinder, and the third connecting plate is inclined downward to the right and a third laser welding head is fixedly arranged in the extending end of the third connecting plate.

[0018] The welding forming device further comprises a controller electrically connected with the lifting cylinder, the jacking cylinder, the driving motor and the welding equipment through signal lines, and the welding equipment is electrically connected with the first laser welding head, the second laser welding head and the third laser welding head through signal lines.

[0019] A welding forming method of a smoke exhaust assembly of a waste incinerator, which comprises the following steps: S1, the worker takes out a supporting piece, and sleeves the inner annular ring of the supporting piece from top to bottom on the outside of the cylinder of the main welding assembly, and places the inner annular ring on the top surface of the supporting plate, since the outer diameter of the cylinder is equal to the inner diameter of the inner annular ring of the supporting piece, the positioning of the supporting piece is realized, at this time, the second laser welding head faces the outer edge of the outer annular ring of the supporting piece. S2, the worker takes out a flange, inserts the flange into the large hole of the positioning table step hole of the main welding assembly from top to bottom, thereby realizing the positioning of the flange, at this time, the counterbore and the center hole of the flange are in communication with the small hole of the positioning table step hole; S3, the worker takes out a smoke exhaust pipe, inserts the smoke exhaust pipe into the counterbore of the flange from top to bottom, thereby realizing the positioning of the smoke exhaust pipe, at this time, the smoke exhaust pipe is located directly above the supporting piece, and the left and right side walls of the smoke exhaust pipe are located directly below the two L-shaped pressing blocks of the auxiliary welding assembly; S4, the supporting piece is lifted to a specified position in the smoke exhaust pipe: the piston rods of the two lifting oil cylinders of the main welding assembly are stretched upwards, the piston rods drive the lifting plate to move upwards along the guide column, the lifting plate drives the driving shaft, the driven shaft, the hollow fixing cylinder, the driving motor, the transmission assembly, the support plate, the hollow fixing cylinder and the rectangular head to move upwards synchronously; Wherein, the hollow fixing 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 upwards synchronously; wherein, the support plate drives the supporting piece, the cylinder and the two strip-shaped pressing blocks to move upwards synchronously, the supporting piece passes through the small hole of the positioning table step hole of the positioning table, the center hole of the flange in turn, and finally enters the smoke exhaust pipe; When the piston rods of the two lifting oil cylinders are completely stretched out, the supporting piece is lifted to a specified position in the smoke exhaust pipe, at this time, the upper and lower edges of the outer annular ring of the supporting piece are in contact with the inner wall of the smoke exhaust pipe, and the first laser welding head is in contact with the inner wall of the smoke exhaust pipe at the position where the inner wall of the flange is located, and the second laser welding head is in contact with the inner wall of the smoke exhaust pipe at the position where the lower edge of the outer annular ring of the supporting piece is located; S5, control the piston rods of the two lifting oil 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, the positioning table, the lifting oil cylinder, the lifting plate, the driving shaft, the driven shaft, the U-shaped piece, the hollow fixing cylinder, the driving motor, the transmission assembly, the support plate, the hollow fixing cylinder and the rectangular head to move upwards synchronously; Wherein, the positioning table drives the flange and the smoke exhaust pipe to move upwards synchronously; wherein, the hollow fixing cylinder drives the driven gear A, the second connecting plate and the second laser welding head to move upwards synchronously; wherein, the support plate drives the supporting piece, the cylinder and the two strip-shaped pressing blocks to move upwards synchronously; When the piston rods of the two lifting oil cylinders are retracted upwards by a 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 pressing blocks are in contact with the tapered surface of the adapter cylinder; With the continuous retraction of the piston rods of the two lifting oil cylinders, the tapered surface of the adapter cylinder extrudes the rounded corners of the two strip-shaped pressing blocks downwards, when the two strip-shaped pressing blocks are extruded by the tapered surface, the two strip-shaped pressing blocks move along the radial direction of the cylinder towards the inner annular ring of the supporting piece; When the piston rods of the two lifting oil cylinders are fully retracted, the two strip-shaped pressing blocks fix the inner annular ring of the support piece, at the same time, the flange plate and the smoke exhaust pipe are fixed by the tool between the L-shaped pressing block and the positioning table, at the same time, the third laser welding head is in contact with the inner wall of the smoke exhaust pipe at the upper edge of the outer annular ring of the support piece, at this time, the flange plate, the smoke exhaust pipe and the support piece are in the welding position; S6, control the laser equipment to start, the laser beam emitted by the first laser welding head is irradiated on the inner wall of the flange plate and the inner wall of the smoke exhaust pipe, so as to start welding the flange plate and the smoke exhaust pipe together; at the same time, the laser beam emitted by the second laser welding head is irradiated on the lower edge of the outer annular ring of the support piece and the inner wall of the smoke exhaust pipe, so as to start welding the lower edge of the outer annular ring and the inner wall of the smoke exhaust pipe together; at the same time, the laser beam emitted by the third laser welding head is irradiated on the upper edge of the outer annular ring of the support piece and the inner wall of the smoke exhaust pipe, so as to start welding the upper edge of the outer annular ring and the inner wall of the smoke exhaust pipe together; S7, control the driving motor of the main welding assembly to start, the driving motor drives the driving shaft to rotate, the driving shaft drives the driving gear A and the driving gear B to rotate synchronously, the driving 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 drive the first laser welding head and the second laser welding head to rotate around the axis of the smoke exhaust pipe respectively; 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, the adapter cylinder drives the third connecting plate to rotate synchronously in the process of deforming the torsion spring, and the third connecting plate drives the third laser welding head to rotate around the axis of the smoke exhaust pipe; When the first laser welding head rotates one circle, a first annular welding scar is formed at the position where the inner wall of the flange plate and the inner wall of the smoke exhaust pipe are in contact, and the flange plate and the smoke exhaust pipe are welded together. When the second laser welding head rotates one circle, a second annular welding scar is formed at the position where the lower edge of the outer annular ring of the support piece and the inner wall of the smoke exhaust pipe are in contact; when the third laser welding head rotates one circle, a third annular welding scar is formed at the position where the upper edge of the outer annular ring of the support piece and the inner wall of the smoke exhaust pipe are in contact, and the support piece is welded in the smoke exhaust pipe, thereby finally forming a first smoke exhaust assembly; S8, the welded smoke exhaust assembly is taken away, and the specific operation steps are as follows: S81, control the welding equipment to be closed, and then control the driving motor to be closed, the driving shaft and the driven shaft stop rotating, and the first laser welding head, the first laser welding head and the third laser welding head stop rotating; S82, the piston rod of the two lifting oil cylinders is controlled to extend downward, the piston rod drives the platform to move downward, the platform drives the jacking oil cylinder, the jacking plate, the positioning table, the barrel, the strip-shaped pressing block, the rectangular head and the smoke exhaust assembly to move downward synchronously, wherein, after the strip-shaped pressing block is separated from the conical surface of the adapter barrel, the strip-shaped pressing block is reset to the inside of the barrel under the elastic restoring force of the spring; wherein, after the rectangular head is withdrawn from the rectangular blind groove of the adapter barrel, the adapter barrel is reset to the initial state under the torsional force of the torsional spring; S83, the piston rod of the jacking oil cylinder is controlled to retract downward, the piston rod drives the jacking plate to move downward, the jacking plate drives the driving shaft, the driven shaft, the hollow fixed barrel and the barrel to move downward, and then the first laser welding head and the second laser welding head are both moved to the lower side of the smoke exhaust pipe of the smoke exhaust assembly; S84, the worker takes the welded and formed smoke exhaust assembly from the positioning table; S9, the worker repeats the operation of steps S1-S8 multiple times, so that multiple smoke exhaust assemblies are welded and formed.

[0020] The present application has the following advantages: greatly reducing the welding work intensity of workers, and greatly improving the welding and forming efficiency of the smoke exhaust assembly. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic view of the smoke exhaust assembly; Figure 2 FIG. 3 is a main cross-sectional schematic view of the smoke exhaust assembly; Figure 1 Figure 3 FIG. 6 is a structural schematic view of the existing tool clamp; Figure 4 FIG. 9 is a structural schematic view of the flange plate; Figure 5 FIG. 12 is a main cross-sectional schematic view of the flange plate; Figure 4 FIG. 15 is a schematic view of the flange plate being placed flat on the top surface of the machine table of the tool clamp; Figure 6 FIG. 18 is a structural schematic view of the smoke exhaust pipe; Figure 7 FIG. 21 is a main cross-sectional schematic view of the smoke exhaust pipe; Figure 8 Figure 7 FIG. 24 is a schematic view of the smoke exhaust pipe and the flange plate being fixed by the tool between the pressing plate and the machine table; Figure 9 FIG. 27 is a structural schematic view of the supporting piece; Figure 10 FIG. 30 is a main cross-sectional schematic view of the supporting piece; Figure 11 FIG. 33 is a schematic view of the supporting piece being put into the smoke exhaust pipe and the inner annular ring of the supporting piece being held by hand; Figure 10 Figure 12 ​​​​Figure 13 Schematic diagram for aligning the laser welding joint to the position where the inner wall of the flange plate and the inner wall of the smoke exhaust pipe are in contact; Figure 14 Schematic diagram for aligning the laser welding joint to the position where the lower edge of the outer annular ring of the support piece and the inner wall of the smoke exhaust pipe are in contact; Figure 15 Schematic diagram for aligning the laser welding joint to the position where the upper edge of the outer annular ring of the support piece and the inner wall of the smoke exhaust pipe are in contact; Figure 16 Schematic diagram of the structure of the present application; Figure 17 Schematic diagram of the structure of the present application; Figure 16 Schematic diagram of the structure of the present application; Figure 18 Schematic diagram of the structure of the present application; Figure 16 Schematic diagram of the structure of the present application; Figure 19 Schematic diagram of the structure of the present application; Figure 18 Schematic diagram of the structure of the present application; Figure 20 Schematic diagram of the structure of the present application; Figure 21 Schematic diagram of the structure of the present application; Figure 20 Schematic diagram of the structure of the present application; Figure 22 Schematic diagram of the structure of the present application; Figure 20 Schematic diagram of the structure of the present application; Figure 23 Schematic diagram of the structure of the present application; Figure 24 Schematic diagram of the structure of the present application; Figure 25 Schematic diagram of the structure of the present application; Figure 24 Schematic diagram of the structure of the present application; Figure 26 Schematic diagram of the structure of the present application; Figure 27 Schematic diagram of the structure of the present application; Figure 26 Schematic diagram of the structure of the present application; Figure 28 Schematic diagram of the structure of the present application; Figure 29 Schematic diagram of the structure of the present application; Figure 30 Schematic diagram of the structure of the present application; Figure 31 Schematic diagram of the structure of the present application; Figure 30 Schematic diagram of the structure of the present application; Figure 32 Schematic diagram of the structure of the present application; Figure 33 Schematic diagram of the structure of the present application;Figure 32 a local enlarged view of the IV part of the figure; Figure 34 a schematic view of fixing the inner annular ring of the supporting member by two strip-shaped pressing blocks; Figure 35 a schematic view of welding and forming the first annular welding scar at the contact position between the inner wall of the flange plate and the inner wall of the smoke exhaust pipe; Figure 36 a schematic view of taking out the smoke exhaust assembly; in the figure: 1-flange plate, 2-smoke exhaust pipe, 3-center hole, 4-counterbore, 5-inner annular ring, 6-outer annular ring, 7-steel strip, 8-first annular welding scar, 9-second annular welding scar, 10-third annular welding scar; 11-machine table, 12-through slot, 13-threaded column, 14-pressing plate, 15-laser welding head; 16-packing plate, 17-arched frame, 18-lifting oil cylinder, 19-fixing column, 20-platform, 21-guide column, 22-positioning table, 23-positioning step hole, 24-jacking oil cylinder, 25-jacking plate; 26-U-shaped piece, 27-hollow fixing cylinder, 28-supporting plate, 29-cylinder body, 30-strip-shaped pressing block, 31-spring, 32-driven gear A, 33-stand plate, 34-first connecting plate, 35-second connecting plate, 36-first laser welding head, 37-second laser welding head; 38-driven shaft, 39-driving shaft, 40-rectangular head, 41-driving motor, 42-driven gear B, 43-driving gear A, 44-driving gear B; 45-rotating shaft, 46-adapting cylinder, 47-torsional spring, 48-rectangular blind slot, 49-conical surface, 50-L-shaped pressing block, 51-third connecting plate, 52-third laser welding head. DETAILED DESCRIPTION

[0022] The present application will be further described below in conjunction with the accompanying drawings, and the protection scope of the present application is not limited to the following description: As Figures 16-25 shown in the figure, a welding and forming device for a smoke exhaust assembly of a waste incinerator, which comprises an arched frame 17 fixed on the top surface of a packing plate 16, two lifting oil cylinders 18 are arranged on the crossbeam of the arched frame 17, the piston rods of the two lifting oil cylinders 18 both downwardly penetrate the crossbeam of the arched frame 17 and are connected with fixing columns 19 at the extending ends, a main welding assembly for simultaneously welding and forming a first annular welding scar 8 and a second annular welding scar 9 is arranged between the two fixing columns 19, and a vice welding assembly for welding and forming a third annular welding scar 10 is arranged on the crossbeam of the arched frame 17; The main welding assembly comprises a platform 20 fixed between the bottom ends of the two fixed columns 19, two guide columns 21 fixed on the platform 20, a positioning table 22 fixed between the upper ends of the two guide columns 21, a positioning table step hole 23 is formed in the positioning table 22, two jacking oil cylinders 24 are fixed on the top surface of the platform 20, the two jacking oil cylinders 24 are located between the two guide columns 21, and a jacking plate 25 slidingly installed on the guide column 21 is fixed between the piston rods of the two jacking oil cylinders 24; the diameter of the large hole of the positioning table step hole 23 is equal to the outer diameter of the flange plate 1; and the outer diameter of the cylinder 29 is equal to the inner diameter of the inner annular ring 5 of the supporting piece.

[0023] A U-shaped piece 26 is fixed on the top surface of the jacking plate 25, a hollow fixing cylinder 27 located directly below the positioning table step hole 23 is fixed in the U-shaped piece 26, a support plate 28 and a cylinder 29 are sequentially fixed on the top end of the hollow fixing cylinder 27, a strip-shaped pressing block 30 is slidingly installed in the left and right side walls of the cylinder 29, a supporting block is fixed on the strip-shaped pressing block 30, and a spring 31 is fixed between the supporting block and the inner wall of the cylinder 29. A driven gear A 32 is rotatably installed on the outside of the hollow fixing cylinder 27, 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 surface of the extending end of the vertical plate 33, a first laser welding head 36 is fixed in the extending end of the first connecting plate 34 which is inclined to the right and downward, and a second laser welding head 37 is fixed in the extending end of the second connecting plate 35 which is inclined to the right and upward; a ball bearing is fixed on the outside of the hollow fixing cylinder 27, and the driven gear A 32 is fixed on the outer ring of the ball bearing.

[0024] A driven shaft 38 and a driving shaft 39 are rotatably installed in the jacking plate 25, a transmission assembly is arranged between the driven shaft 38 and the driving shaft 39, the driven shaft 38 sequentially penetrates the hollow fixing cylinder 27, the support plate 28 and the cylinder 29 in the axial direction upwardly, and a rectangular head 40 is fixed on the extending end of the driven shaft 38; a driving motor 41 is fixed on the bottom surface of the jacking plate 25, and the output shaft of the driving motor 41 is connected with the bottom end of the driving shaft 39. The transmission assembly comprises a driven gear B 42 fixed on 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, the driving gear A 43 is engaged with the driven gear A 32, and the driving gear B 44 is engaged with the driven gear B 42.

[0025] Two guide holes corresponding to the two guide columns 21 are formed in the jacking plate 25, and the two guide columns 21 are slidingly matched with the two guide holes. Radial holes are formed in the left and right side walls of the cylinder 29, and the two strip-shaped pressing blocks 30 are slidingly installed in the two radial holes.

[0026] 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 respectively fixed to the crossbeam and the adapter cylinder 46. 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. 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.

[0027] 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.

[0028] A method for welding and forming a flue gas assembly for a waste incinerator, comprising the following steps: S1, the worker takes out a... Figures 10-11 The 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. 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. 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. S4, lifting the support piece to a specified position in the smoke exhaust pipe 2: the piston rods of the two lifting cylinders 24 of the main welding assembly are extended upwards, the piston rods drive the lifting plate 25 to move upwards along the guide column 21, the lifting plate 25 drives the driving shaft 39, the driven shaft 38, the hollow fixing cylinder 27, the driving motor 41, the transmission assembly, the support plate 28, the hollow fixing cylinder 27 and the rectangular head 40 to move upwards synchronously; Wherein, the hollow fixing 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 upwards synchronously; wherein, the support plate 28 drives the support piece, the cylinder body 29 and the two strip-shaped pressing blocks 30 to move upwards synchronously, the support piece passes through the small holes of the positioning step holes 23 of the positioning table 22 and the center hole 3 of the flange plate 1 in sequence and finally enters the smoke exhaust pipe 2; When the piston rods of the two lifting cylinders 24 are fully extended, the support piece is lifted to a specified position in the smoke exhaust pipe 2, as shown in Figures 30-31 At this time, the upper and lower edges of the outer annular ring 6 of the support piece are in contact with the inner wall of the smoke exhaust pipe 2, and the first laser welding head 36 is in contact with the inner wall of the smoke exhaust pipe 2 at the position where the inner wall of the flange plate 1 is located, and the second laser welding head 37 is in contact with the inner wall of the smoke exhaust pipe 2 at the position where the lower edge of the outer annular ring 6 of the support piece is located, as shown in Figure 31 ; S5, control the piston rods of the two lifting cylinders 18 to retract upwards, the piston rods drive the fixing column 19 to move upwards, the fixing column 19 drives the platform 20 to move upwards, the platform 20 drives the guide column 21, the positioning table 22, the lifting cylinder 24, the lifting plate 25, the driving shaft 39, the driven shaft 38, the U-shaped piece 26, the hollow fixing cylinder 27, the driving motor 41, the transmission assembly, the support plate 28, the hollow fixing cylinder 27 and the rectangular head 40 to move upwards synchronously; Wherein, the positioning table 22 drives the flange plate 1 and the smoke exhaust pipe 2 to move upwards synchronously; wherein, the hollow fixing cylinder 27 drives the driven gear A32, the second connecting plate 35 and the second laser welding head 37 to move upwards synchronously; wherein, the support plate 28 drives the support piece, the cylinder body 29 and the two strip-shaped pressing blocks 30 to move upwards synchronously; When the piston rods of the two lifting cylinders 18 are retracted upwards by a distance, the rectangular head 40 is inserted into the rectangular blind groove 48 of the adapter cylinder 46 of the auxiliary welding assembly, as shown in Figures 32-33 The rounded corners of the two strip-shaped pressing blocks 30 are in contact with the tapered surface 49 of the adapter cylinder 46; With the continuous retraction of the piston rods of the two lifting cylinders 18 upwards, the tapered surface 49 of the adapter cylinder 46 extrudes the rounded corners of the two strip-shaped pressing blocks 30 downwards, when the two strip-shaped pressing blocks 30 are extruded by the tapered surface 49, the two strip-shaped pressing blocks 30 move along the radial direction of the cylinder body 29 towards the inner annular ring 5 of the support piece; When the piston rods of the two lifting oil cylinders 18 are fully retracted, the two strip-shaped pressing blocks 30 fix the inner annular ring 5 of the support, as shown in Figure 34 At the same time, the flange plate 1 and the smoke pipe 2 are fixed by the tool between the L-shaped pressing block 50 and the positioning table 22, and the third laser welding head 52 is in contact with the inner wall of the smoke pipe 2 at the upper edge of the outer annular ring 6 of the support, at this time, the flange plate 1, the smoke pipe 2 and the support are in the welding position; S6, control the laser equipment to start, the laser beam emitted by the first laser welding head 36 is irradiated on the inner wall of the flange plate 1 and the inner wall of the smoke pipe 2, so as to start welding the flange plate 1 and the smoke pipe 2 together; at the same time, the laser beam emitted by the second laser welding head 37 is irradiated on the lower edge of the outer annular ring 6 of the support and the inner wall of the smoke pipe 2, so as to start welding the lower edge of the outer annular ring 6 and the inner wall of the smoke pipe 2 together; at the same time, the laser beam emitted by the third laser welding head 52 is irradiated on the upper edge of the outer annular ring 6 of the support and the inner wall of the smoke pipe 2, so as to start welding the upper edge of the outer annular ring 6 and the inner wall of the smoke pipe 2 together; S7, control the driving motor 41 of the main welding assembly to start, the driving motor 41 drives the driving shaft 39 to rotate, the rotating direction of the driving shaft 39 is shown by the solid arrow in Figure 35 the middle, the driving shaft 39 drives the driving gear A 43 and the driving gear B 44 to rotate synchronously, the driving 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, and the first connecting plate 34 and the second connecting plate 35 drive the first laser welding head 36 and the second laser welding head 37 to rotate around the axis of the smoke pipe 2, respectively; At the same time, the driving gear B 44 drives the driven gear B 42 to rotate around its own axis, and the driven gear B 42 drives the driven shaft 38 to rotate, the rotating direction of the driven shaft 38 is shown by the hollow arrow in Figure 35 the middle, the driven shaft 38 drives the rectangular head 40 to rotate, and the rectangular head 40 drives the adapter cylinder 46 of the auxiliary welding assembly to rotate synchronously, the rotating direction of the adapter cylinder 46 is shown by the hollow arrow in Figure 35 the middle, the adapter cylinder 46 drives the third connecting plate 51 to rotate synchronously in the process of deforming the torsional spring 47, and the third connecting plate 51 drives the third laser welding head 52 to rotate around the axis of the smoke pipe 2; When the first laser welding head 36 rotates one circle, the first annular welding scar 8 is formed on the inner wall of the flange plate 1 and the inner wall of the smoke pipe 2, as shown in Figure 35 , and the flange plate 1 is welded together with the smoke pipe 2; When the second laser welding head 37 rotates one circle, the second annular welding scar 9 is formed at the lower edge of the outer ring 6 of the support member and the inner wall of the smoke exhaust pipe 2, as shown in Figure 35 When the third laser welding head 52 rotates one circle, the third annular welding scar 10 is formed at the upper edge of the outer ring 6 of the support member and the inner wall of the smoke exhaust pipe 2, as shown in Figure 35 Thus, the support member is welded in the smoke exhaust pipe 2, and the first smoke exhaust assembly is formed. Figures 1-2 As can be seen from step S7, the worker only needs to control the driving motor 41 to start, and the first annular welding scar 8 is formed at the inner wall of the flange plate 1 and the inner wall of the smoke exhaust pipe 2, so as to weld the smoke exhaust pipe 2 together. At the same time, the second annular welding scar 9 is formed at the lower edge of the outer ring 6 of the support member and the inner wall of the smoke exhaust pipe 2, and the third annular welding scar 10 is formed at the upper edge of the outer ring 6 of the support member and the inner wall of the smoke exhaust pipe 2, so as to weld the support member in the smoke exhaust pipe 2, and the smoke exhaust assembly is formed.

[0029] Therefore, compared with the method shown in Figures 3-15 , the worker does not need to sequentially perform three welding procedures to form the first annular welding scar 8, the second annular welding scar 9 and the third annular welding scar 10, and then form a smoke exhaust assembly. The welding forming device of the present application eliminates most of the welding procedures, realizes the welding forming of a smoke exhaust assembly in a short time, and greatly improves the welding forming efficiency of the smoke exhaust assembly.

[0030] S8, the formed smoke exhaust assembly is taken away, and the specific operation steps are as follows: S81, the welding equipment is controlled to be closed, and then the driving motor 41 is controlled to be closed, and the driving shaft 39 and the driven shaft 38 are stopped rotating, and the first laser welding head 36, the second laser welding head 37 and the third laser welding head 52 are stopped rotating; S82, the piston rods of the two lifting oil cylinders 18 are controlled to be extended downward, the piston rods drive the platform 20 to move downward, and the platform 20 drives the lifting cylinder 24, the lifting plate 25, the positioning table 22, the cylinder 29, the strip-shaped pressing block 30, the rectangular head 40 and the smoke exhaust assembly to move downward synchronously. When the strip-shaped pressing block 30 is separated from the conical surface 49 of the adapter cylinder 46, the strip-shaped pressing block 30 is reset to the inside of the cylinder 29 under the elastic restoring force of the spring 31. When the rectangular head 40 is withdrawn from the rectangular blind groove 48 of the adapter cylinder 46, the adapter cylinder 46 is reset to the initial state under the torsional force of the torsional spring 47. ​S83, control the piston rod of the jacking oil cylinder 24 to retract downward, the piston rod drives the jacking plate 25 to move downward, the jacking plate 25 drives the driving shaft 39, the driven shaft 38, the hollow fixing cylinder 27 and the cylinder body 29 to move downward, thereby making the first laser welding joint 36 and the second laser welding joint 37 move to the lower side of the smoke exhaust pipe 2 of the smoke exhaust assembly; S84, the worker takes the smoke exhaust assembly welded and formed from the positioning table 22 away, the taking direction is as shown by the arrow in the middle; Figure 36 S9, the worker repeats the operation of steps S1-S8 multiple times, so as to weld and form multiple smoke exhaust assemblies.

[0031] In addition, as can be seen from step S5, only the upward retraction action of the piston rod of the lifting oil cylinder 18 is controlled, the inner annular ring 5 of the support piece is fixed by the two strip-shaped pressing blocks 30, and at the same time, the flange plate 1 and the smoke exhaust pipe 2 are both fixed between the L-shaped pressing block 50 and the positioning table 22, so that the flange plate 1, the smoke exhaust pipe 2 and the support piece are quickly and automatically in the welding station.

[0032] Therefore, compared with the method shown in Figures 3-15 , the present welding forming device does not need the worker to manually rotate the two pressing plates 14 downward to fix the smoke exhaust pipe 2 and the flange plate 1 between the pressing plates 14 and the machine table 11, nor does it need the worker to always hold the inner annular ring 5 of the support piece with his hands to make the flange plate 1, the smoke exhaust pipe 2 and the support piece in the welding station, which not only greatly reduces the welding work intensity of the worker, but also greatly improves the welding forming efficiency of the smoke exhaust assembly.​

Claims

1. A welding forming device for a smoke exhaust assembly of a waste incinerator, comprising an arched frame (17) fixed on the top surface of a base plate (16), two lifting oil cylinders (18) are arranged on the crossbeam of the arched frame (17), the piston rods of the two lifting oil cylinders (18) both downwardly penetrate the crossbeam of the arched frame (17) and the extending ends are connected with fixing columns (19), characterized in that: a main welding assembly for simultaneously welding and forming a first annular welding scar (8) and a second annular welding scar (9) is arranged between the two fixing columns (19), and a vice welding assembly for welding and forming a third annular welding scar (10) is arranged on the crossbeam of the arched frame (17); the main welding assembly comprises a platform (20) fixed between the bottom ends of the two fixing columns (19), two guide columns (21) fixed on the platform (20), and a positioning table (22) fixed between the upper end portions of the two guide columns (21), the positioning table (22) is provided with a positioning stepped hole (23) therein, the top surface of the platform (20) is fixed with two jacking oil cylinders (24), the two jacking oil cylinders (24) are both located between the two guide columns (21), and the piston rods of the two jacking oil cylinders (24) are fixed with a jacking plate (25) which is slidingly installed on the guide columns (21); the top surface of the jacking plate (25) is fixed with a U-shaped piece (26), the U-shaped piece (26) is fixed with a hollow fixing cylinder (27) located directly below the positioning stepped hole (23) therein, the top end of the hollow fixing cylinder (27) is sequentially fixed with a supporting plate (28) and a cylinder body (29), the left and right sidewalls of the cylinder body (29) are both slidingly installed with strip-shaped pressing blocks (30), the strip-shaped pressing blocks (30) are fixed with supporting blocks, and the supporting blocks and the inner wall of the cylinder body (29) are fixed with springs (31); the outer portion of the hollow fixing cylinder (27) is rotatably installed with a driven gear A (32), the top surface of the driven gear A (32) is fixed with an upwardly extending vertical plate (33), the right end surface of the extending end of the vertical plate (33) is fixed with a first connecting plate (34) and a second connecting plate (35), the first connecting plate (34) is inclined downwardly to the right and the extending end thereof is fixed with a first laser welding head (36), and the second connecting plate (35) is inclined upwardly to the right and the extending end thereof is fixed with a second laser welding head (37); the jacking plate (25) is rotatably installed with a driven shaft (38) and a driving shaft (39), a transmission assembly is arranged between the driven shaft (38) and the driving shaft (39), the driven shaft (38) sequentially penetrates the hollow fixing cylinder (27), the supporting plate (28) and the cylinder body (29) along the axial direction and upwardly, and the extending end of the driven shaft (38) is fixed with a rectangular head (40); the bottom surface of the jacking plate (25) is fixed with a driving motor (41), and the output shaft of the driving motor (41) is connected with the bottom end of the driving shaft (39). two guide holes corresponding to the two guide columns (21) are formed in the jacking plate (25), and the two guide columns (21) are slidingly matched with the two guide holes.

2. The welding forming device of the exhaust smoke assembly of the waste incinerator according to claim 1, characterized in that: ​ 3. The welding forming device of the exhaust smoke assembly of the 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 plate (1); the outer diameter of the cylinder (29) is equal to the inner diameter of the inner annular ring (5) of the supporting piece.

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

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

6. A welding forming device for a smoke exhaust assembly of a waste incinerator according to claim 5, characterized in that: The transmission assembly comprises a driven gear B (42) fixedly installed at the bottom end of the driven shaft (38), a driving gear A (43) and a driving gear B (44) fixedly installed on the driving shaft (39), the driving gear A (43) is engaged with the driven gear A (32), and the driving gear B (44) is engaged with the driven gear B (42).

7. A welding forming device for a smoke exhaust assembly of a waste incinerator according to claim 6, characterized in that: The auxiliary welding assembly is located directly above the main welding assembly, and comprises a rotating shaft (45) rotatably installed in the beam of the arch-shaped frame (17), and a transfer cylinder (46) fixedly installed at the bottom of the rotating shaft (45), a torsional spring (47) is sleeved on the rotating shaft (45), the upper and lower ends of the torsional spring (47) are fixedly installed on the beam and the transfer cylinder (46) respectively, a rectangular blind groove (48) is formed in the bottom surface of the transfer cylinder (46) and extends along the axial direction of the transfer cylinder (46), the rectangular blind groove (48) is located directly above the rectangular head (40), and a conical surface (49) is formed in the outer portion of the lower end of the transfer cylinder (46), and the conical surface (49) is located directly above the rounded corners of the two strip-shaped pressing blocks (30). The auxiliary welding assembly further comprises two L-shaped pressing blocks (50) fixedly installed on the bottom surface of the beam of the arch-shaped frame (17), and a third connecting plate (51) fixedly installed on the outer cylindrical surface of the transfer cylinder (46), the two L-shaped pressing blocks (50) are respectively located on the left and right sides of the transfer cylinder (46), and the third connecting plate (51) is inclined downward to the right and is internally provided with a third laser welding head (52) at the extending end.

8. The welding forming device of the exhaust smoke assembly of the waste incinerator according to claim 7, characterized in that: The welding forming device further comprises a controller, the controller is electrically connected with the lifting oil cylinder (18), the jacking oil cylinder (24), the driving motor (41) and the welding equipment through signal lines, and the welding equipment is electrically connected with the first laser welding head (36), the second laser welding head (37) and the third laser welding head (52) through signal lines.

9. A welding forming method of the exhaust component of the waste incinerator, using the welding forming device of the exhaust component of the waste incinerator according to claim 8, characterized in that: It comprises the following steps: S1, the worker takes out a supporting piece, and sleeves the inner annular ring (5) of the supporting piece from top to bottom on the outside of the cylinder (29) of the main welding assembly, and places the inner annular ring (5) on the top surface of the supporting plate (28), since the outer diameter of the cylinder (29) is equal to the inner diameter of the inner annular ring (5) of the supporting piece, the supporting piece is positioned, at this time, the second laser welding head (37) faces the outer edge of the outer annular ring (6) of the supporting piece; S2, the worker takes out a flange plate (1), inserts the flange plate (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, so as to realize the positioning of the flange plate (1), at this time, the counterbore (4) and the center hole (3) of the flange plate (1) are in communication with the small holes of the positioning step hole (23); S3, the worker takes out a smoke exhaust pipe (2), inserts the smoke exhaust pipe (2) into the counterbore (4) of the flange plate (1) from top to bottom, thereby realizing the positioning of the smoke exhaust pipe (2), at this time, the smoke exhaust pipe (2) is located directly above the supporting piece, and the left and right side walls of the smoke exhaust pipe (2) are respectively located directly below the two L-shaped pressing blocks (50) of the auxiliary welding assembly; S4, the supporting piece is jacked to the designated position in the smoke exhaust pipe (2): the piston rods of the two jacking oil cylinders (24) of the main welding assembly are controlled to extend upward, the piston rods drive the jacking plate (25) to move upward along the guide column (21), the jacking plate (25) drives the driving shaft (39), the driven shaft (38), the hollow fixing cylinder (27), the driving motor (41), the transmission assembly, the support plate (28), the hollow fixing cylinder (27) and the rectangular head (40) to move upward synchronously; Wherein, the hollow fixing 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; wherein, the support plate (28) drives the supporting piece, the cylinder body (29) and the two strip-shaped pressing blocks (30) to move upward synchronously, the supporting piece sequentially passes through the small hole of the positioning step hole (23) of the positioning table (22), the center hole (3) of the flange plate (1) and finally enters the smoke exhaust pipe (2); When the piston rods of the two jacking oil cylinders (24) are fully extended, the supporting piece is jacked to the designated position in the smoke exhaust pipe (2), at this time, the upper and lower edges of the outer annular ring (6) of the supporting piece are in contact with the inner wall of the smoke exhaust pipe (2), and the first laser welding head (36) is in contact with the inner wall of the smoke exhaust pipe (2) at the position where the inner wall of the flange plate (1) is located, and the second laser welding head (37) is in contact with the inner wall of the smoke exhaust pipe (2) at the position where the lower edge of the outer annular ring (6) of the supporting piece is located; S5, the piston rods of the two lifting oil cylinders (18) are controlled to retract upward, the piston rods drive the fixing column (19) to move upward, the fixing column (19) drives the platform (20) to move upward, the platform (20) drives the guide column (21), the positioning table (22), the jacking oil cylinder (24), the jacking plate (25), the driving shaft (39), the driven shaft (38), the U-shaped piece (26), the hollow fixing cylinder (27), the driving motor (41), the transmission assembly, the support plate (28), the hollow fixing cylinder (27) and the rectangular head (40) to move upward synchronously; Wherein, the positioning table (22) drives the flange plate (1) and the smoke exhaust pipe (2) to move upward synchronously; wherein, the hollow fixing cylinder (27) drives the driven gear A (32), the second connecting plate (35) and the second laser welding head (37) to move upward synchronously; wherein, the support plate (28) drives the supporting piece, the cylinder body (29) and the two strip-shaped pressing blocks (30) to move upward synchronously; When the piston rods of the two lifting oil cylinders (18) are retracted upward by a distance, the rectangular head (40) is inserted into the rectangular blind hole (48) of the adapter sleeve (46) of the auxiliary welding assembly, and the rounded corners of the two strip-shaped pressing blocks (30) are in contact with the tapered surface (49) of the adapter sleeve (46); With the continuous upward retraction of the piston rods of the two lifting oil cylinders (18), the tapered surface (49) of the adapter sleeve (46) extrudes the rounded corners of the two strip-shaped pressing blocks (30) downward, and when the two strip-shaped pressing blocks (30) are extruded by the tapered surface (49), the two strip-shaped pressing blocks (30) move along the radial direction of the cylinder body (29) towards the inner annular ring (5) of the support piece; When the piston rods of the two lifting oil cylinders (18) are fully retracted, the two strip-shaped pressing blocks (30) fix the inner annular ring (5) of the support piece, at the same time, the flange plate (1) and the smoke pipe (2) are fixed between the L-shaped pressing block (50) and the positioning table (22) by the tooling, and at the same time, the third laser welding head (52) is in contact with the inner wall of the smoke pipe (2) at the position where the upper edge of the outer annular ring (6) of the support piece is located, at this time, the flange plate (1), the smoke pipe (2) and the support piece are in the welding station; S6, control the laser equipment to start, the laser beam emitted by the first laser welding head (36) is irradiated on the position where the inner wall of the flange plate (1) is in contact with the inner wall of the smoke pipe (2), so as to start welding the flange plate (1) and the smoke pipe (2) together; at the same time, the laser beam emitted by the second laser welding head (37) is irradiated on the position where the lower edge of the outer annular ring (6) of the support piece is in contact with the inner wall of the smoke pipe (2), so as to start welding the lower edge of the outer annular ring (6) and the inner wall of the smoke pipe (2) together; at the same time, the laser beam emitted by the third laser welding head (52) is irradiated on the position where the upper edge of the outer annular ring (6) of the support piece is in contact with the inner wall of the smoke pipe (2), so as to start welding the upper edge of the outer annular ring (6) and the inner wall of the smoke pipe (2) together; S7, control the driving motor (41) of the main welding assembly to start, the driving motor (41) drives the driving shaft (39) to rotate, the driving shaft (39) drives the driving gear A (43) and the driving gear B (44) to rotate synchronously, the driving gear A (43) drives the driven gear A (32) to rotate around the axis of the hollow fixed sleeve (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, and the first connecting plate (34) and the second connecting plate (35) drive the first laser welding head (36) and the second laser welding head (37) to rotate around the axis of the smoke pipe (2) respectively; Meanwhile, 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, the adapter cylinder (46) also drives the third connecting plate (51) to rotate synchronously in the process of deforming the torsion spring (47), the third connecting plate (51) drives the third laser welding head (52) to rotate around the axis of the smoke exhaust pipe (2) in the circumferential direction; When the first laser welding head (36) rotates one circle in the circumferential direction, the first annular welding scar (8) is formed at the contact position between the inner wall of the flange plate (1) and the inner wall of the smoke exhaust pipe (2), thereby realizing the welding of the flange plate (1) and the smoke exhaust pipe (2); When the second laser welding head (37) rotates one circle in the circumferential direction, the second annular welding scar (9) is formed at the contact position between the lower edge of the outer annular ring (6) of the support piece and the inner wall of the smoke exhaust pipe (2); when the third laser welding head (52) rotates one circle in the circumferential direction, the third annular welding scar (10) is formed at the contact position between the upper edge of the outer annular ring (6) of the support piece and the inner wall of the smoke exhaust pipe (2), thereby realizing the welding of the support piece in the smoke exhaust pipe (2), and finally forming the first smoke exhaust assembly; S8, the welded and formed smoke exhaust assembly is taken away, and the specific operation steps are as follows: S81, control the welding equipment to be closed, and then control the driving motor (41) to be closed, so that the driving shaft (39) and the driven shaft (38) stop rotating, and the first laser welding head (36), the first laser welding head (36) and the third laser welding head (52) stop rotating; S82, control the piston rod of the two lifting oil cylinders (18) to extend downward, so that the piston rod drives the platform (20) to move downward, the platform (20) drives the jacking oil cylinder (24), the jacking plate (25), the positioning table (22), the cylinder body (29), the strip-shaped pressing block (30), the rectangular head (40) and the smoke exhaust assembly to move downward synchronously, wherein when the strip-shaped pressing block (30) is separated from the conical surface (49) of the adapter cylinder (46), the strip-shaped pressing block (30) is reset to the inside of the cylinder body (29) under the elastic restoring force of the spring (31); wherein when the rectangular head (40) is withdrawn from the rectangular blind groove (48) of the adapter cylinder (46), the adapter cylinder (46) is reset to the initial state under the torsion of the torsion spring (47); S83, control the piston rod of the jacking oil cylinder (24) to retract downward, so that the piston rod drives the jacking plate (25) to move downward, the jacking plate (25) drives the driving shaft (39), the driven shaft (38), the hollow fixed cylinder (27) and the cylinder body (29) to move downward, and then the first laser welding head (36) and the second laser welding head (37) are moved below the smoke exhaust pipe (2) of the smoke exhaust assembly; S84, the worker takes the welded and formed smoke exhaust assembly from the positioning table (22); S9, the worker repeats the operation of steps S1-S8 multiple times, and multiple smoke exhaust assemblies can be welded and formed.

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