A device for spot welding of cylinder section longitudinal seam and arc-initiating plate and cutting of arc-initiating plate

Abstract

The invention discloses a spot welding device for assembling a longitudinal seam of a cylinder section and an arc-extinguishing plate, and an arc-extinguishing plate cutting device, comprising a trolley and a trolley running track, the trolley is provided with a frame, and a cylinder section support and rotation mechanism, a cylinder section longitudinal seam closing mechanism and an arc-extinguishing plate cutting mechanism are installed on the frame; a vertical lifting column is provided at one end of the trolley running track, a vertical lifting slide is provided on the vertical lifting column, the vertical lifting slide can slide up and down on the vertical lifting column, and a cantilever structure is installed on the vertical lifting slide; an axial misalignment adjustment mechanism on both sides of the longitudinal seam of the cylinder section, a radial misalignment adjustment mechanism for the longitudinal seam of the cylinder section, an arc-extinguishing plate assembly mechanism, and a spot welding mechanism for the longitudinal seam of the cylinder section and the arc-extinguishing plate are installed on the cantilever structure. The device of the invention can automatically eliminate the gap of the longitudinal seam of the cylinder section, the longitudinal misalignment of the cylinder section and the radial misalignment of the cylinder section, and can automatically install the arc-extinguishing plates at both ends of the longitudinal seam, and automatically spot weld the longitudinal seam and the arc-extinguishing plate, and the entire working process is automatically completed by intelligent control.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure vessel manufacturing, and particularly relates to a spot welding device for assembling a longitudinal seam of a cylinder section and an arc striking and extinguishing plate, and an arc striking and extinguishing plate cutting device. Background Art

[0002] For thin-walled cylinder sections of pressure vessels, especially stainless steel cylinder sections, the longitudinal seams and circumferential seams are usually welded by plasma welding technology or deep-melting TIG (or K-TIG) welding technology. For welds with a wall thickness of less than 8mm, beveling welding is not required to achieve single-sided welding and double-sided forming. This advanced and efficient welding method has very high requirements for the assembly gap and misalignment of the longitudinal seams and circumferential seams, which cannot exceed 10% of the plate thickness. That is to say, for a cylinder section with a thickness of 8mm, the assembly gap and misalignment of the longitudinal seams and circumferential seams should be less than 0.8mm. The plate rolling machine is a key equipment for rolling the cylinder sections of pressure vessels. After the cylinder section is initially rolled, the longitudinal seam is prone to axial misalignment and radial misalignment. The usual practice is to roll the cylinder section from the plate It is taken out from the machine, and the assembly and spot welding of the longitudinal seam are completed by manual assembly and correction at the assembly site. The arc-starting and extinguishing plates are manually installed and spot-welded at both ends of the longitudinal seam, and then it is sent to the longitudinal seam welding station for plasma welding or deep-melting TIG (or K-TIG) welding. Another method is to install an axial side thrust device on the side of the plate rolling machine, and eliminate the axial misalignment of the cylinder segment by inching control of the side thrust amount. It is necessary to frequently check the misalignment with a ruler. For radial misalignment, no special means are used to eliminate it, and then it is fixed by manual spot welding. The arc-starting and extinguishing plates are manually installed and spot-welded at both ends of the longitudinal seam. The method of installing an axial side thrust device on the side of the plate rolling machine can only be used for cylinders with larger diameters, and is difficult to implement for cylinders with smaller diameters.

[0003] The above existing technologies are all relatively inefficient. The quality of longitudinal seam assembly depends on human factors. It is necessary to manually assemble the arc-initiating and extinguishing plates and fix them by manual spot welding, which restricts the roll bending machine and longitudinal seam plasma welding or deep-melting TIG (or K-TIG) welding to achieve a fully automated process. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects and to provide a spot welding device for assembling the longitudinal seam of the cylinder segment and the arc-extinguishing plate and a cutting device for the arc-extinguishing plate. The extrusion wheels on both sides of the cylinder segment are used to generate a closing external force to eliminate the gap in the longitudinal seam of the cylinder segment. The longitudinal misalignment of the cylinder segment is eliminated by the extrusion mechanism on both sides of the longitudinal seam. The radial misalignment of the cylinder segment is eliminated by the upper and lower clamping mechanisms on both sides of the longitudinal seam. The arc-extinguishing plates are automatically installed at both ends of the longitudinal seam. The welding robot automatically spot welds the longitudinal seam and the arc-extinguishing plate and automatically cuts the arc-extinguishing plate. The entire working process is automatically completed using intelligent control.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for spot welding of cylinder segment longitudinal seams and arc-extinguishing plates and arc-extinguishing plate cutting, comprising a trolley and a trolley running track, the trolley is provided with a frame, the frame is provided with a cylinder segment support and rotation mechanism, a cylinder segment longitudinal seam closing mechanism and an arc-extinguishing plate cutting mechanism;

[0007] A vertical lifting column is provided at one end of the trolley running track, and a vertical lifting slide is provided on the vertical lifting column. The vertical lifting slide can slide up and down on the vertical lifting column, and a cantilever structure is installed on the vertical lifting slide; the cantilever structure is equipped with an axial misalignment adjustment mechanism on both sides of the longitudinal seam of the cylinder section, a radial misalignment adjustment mechanism for the longitudinal seam of the cylinder section, an arc-strike-out plate assembly mechanism, and a spot welding mechanism for the longitudinal seam of the cylinder section and the arc-strike-out plate.

[0008] Furthermore, the cylinder segment support and rotation mechanism includes active rollers and a driving mechanism arranged on both sides of the frame, the driving mechanism is connected to the active rollers to drive the active rollers to rotate, and the cylinder segment is arranged above the two active rollers.

[0009] Furthermore, the cylinder section longitudinal seam closing mechanism includes extrusion wheels arranged on both sides of the frame and driven by a cylinder to close.

[0010] Furthermore, the arc-extinguishing plate cutting mechanism includes a horizontal driving mechanism arranged at both ends of the frame, an upper and lower driving mechanism is installed at the movable end of the horizontal driving mechanism, and a circular saw is installed at the movable end of the upper and lower driving mechanism.

[0011] Furthermore, a crossbeam is installed at the end of the cantilever structure, a sensor is installed under the crossbeam, a rectangular channel is provided on the crossbeam along the length direction, guide grooves are provided on the inner side walls on both sides of the channel along the length direction, and a cylinder mounting support is provided at each end of the guide groove, and the cylinder mounting support can slide in the guide groove;

[0012] The axial misalignment adjustment mechanism on both sides of the longitudinal seam of the barrel section includes two sets of extrusion mechanisms, which are arranged at both ends of the crossbeam. The extrusion mechanism includes an extrusion cylinder, and the front flange of the extrusion cylinder is connected to the cylinder supports located at both ends of the crossbeam. The extrusion cylinder rod of the extrusion cylinder is connected to one end of the cylinder mounting support. The extrusion cylinder drives the cylinder mounting support to slide in the guide groove close to the barrel section, and the plane at the other end of the cylinder mounting support squeezes the two ends of the barrel section to eliminate the axial misalignment on both sides of the longitudinal seam of the barrel section.

[0013] Furthermore, the radial misalignment adjustment mechanism of the longitudinal seam of the barrel section includes two sets of upper and lower clamping mechanisms, and the upper and lower clamping mechanisms include two clamping cylinders, an upper pressing plate, a lower pressing plate, a guide column and a guide sleeve;

[0014] The two clamping cylinders are respectively arranged at the upper and lower ends of the cylinder mounting support, the clamping cylinder rods of the two clamping cylinders are respectively connected to the upper pressure plate and the lower pressure plate, two guide columns are respectively installed on the upper pressure plate and the lower pressure plate, and a guide sleeve matching the guide column is installed on the cylinder mounting support. The contact parts of the upper pressure plate and the lower pressure plate with the barrel section adopt an arc surface structure, and the two clamping cylinders respectively drive the upper pressure plate and the lower pressure plate to move closer to each other, and squeeze the barrel section in the radial direction to eliminate the radial misalignment of the longitudinal seam of the barrel section.

[0015] Furthermore, the arc-initiating and extinguishing plate assembly mechanism is arranged on the lower surface of the lower pressure plate, and the arc-initiating and extinguishing plate assembly mechanism comprises a magazine-type arc-initiating and extinguishing plate storage bin, a cylinder lifting device, a guide cylinder and a guide movable cover plate;

[0016] The upper end surface and the lower end surface of the magazine-type arc-initiating and extinguishing plate storage bin are both provided with openings, and the arc-initiating and extinguishing plates are horizontally stacked in the magazine-type arc-initiating and extinguishing plate storage bin;

[0017] A rectangular through hole is provided on the lower pressure plate, and the upper end surface of the magazine-type arc-extinguishing plate storage bin is inserted into the rectangular through hole. The cylinder lifting device is arranged below the magazine-type arc-extinguishing plate storage bin, and a top plate is provided at the movable end of the cylinder lifting device. The top plate is connected to the magazine-type arc-extinguishing plate storage bin and the arc-extinguishing plate therein, and the cylinder lifting device drives the magazine-type arc-extinguishing plate storage bin and the arc-extinguishing plate therein to move upward;

[0018] The guide cylinder is arranged on the lower surface of the lower pressure plate, and the guide cylinder drives the cartridge-type arc-initiating and extinguishing plate storage bin to move horizontally, so that the uppermost arc-initiating and extinguishing plate is closely attached to the end surface of the longitudinal seam of the cylinder section;

[0019] The guide movable cover plate is arranged on the upper pressure plate, and the guide movable cover plate can slide along the upper pressure plate. A groove is opened in the middle of the upper pressure plate to expose the longitudinal seam of the cylinder section; locking bolts are arranged on both sides of the guide movable cover plate, and a distance bolt is arranged in the middle. The guide movable cover plate is removed, and the magazine-type arc-extinguishing plate storage bin is inserted upward into the rectangular through hole on the lower pressure plate, the guide movable cover plate is reset and fixed with the locking bolt, and the distance bolt is adjusted to make the uppermost arc-extinguishing plate flush with the upper surface of the longitudinal seam of the cylinder section.

[0020] Furthermore, the spot welding mechanism for the longitudinal seam of the cylinder section and the arc striking and extinguishing plate comprises a welding robot, and the welding robot spot welds the longitudinal seam of the cylinder section and the arc striking and extinguishing plate through the groove opened in the middle of the upper pressing plate.

[0021] The beneficial effects of the present invention are:

[0022] 1. For thin-walled cylinder sections of different diameters, the equipment of the present invention can eliminate the gap in the longitudinal seam of the cylinder section through the extrusion wheels on both sides of the cylinder section, eliminate the longitudinal misalignment of the cylinder section through the extrusion mechanisms on both sides of the longitudinal seam, and eliminate the radial misalignment of the cylinder section through the upper and lower extrusion mechanisms on both sides of the longitudinal seam, thereby realizing the automatic correction of the longitudinal seam of the cylinder section; at the same time, it can also realize the automatic installation of arc-initiating and extinguishing plates at both ends of the longitudinal seam, and the welding robot can automatically spot weld the longitudinal seam and the arc-initiating and extinguishing plates. After the longitudinal seam welding of the cylinder section is completed, the arc-initiating and extinguishing plates at both ends of the cylinder section can be automatically cut. The equipment of the present invention is installed between the CNC plate rolling machine and the longitudinal seam welding, which can realize the automation of the process of initial rolling of the cylinder section - longitudinal seam assembly spot welding - arc-initiating and extinguishing plate assembly spot welding - longitudinal seam welding - cutting of the arc-initiating and extinguishing plates - cylinder section re-rolling, improve manufacturing efficiency, and save manufacturing costs.

[0023] 2. The equipment of the present invention has better spot welding quality for longitudinal seam assembly of cylinder sections than manual assembly quality, and provides a stable and reliable method to meet the requirements of plasma welding technology or deep-penetration TIG (or K-TIG) welding technology for longitudinal seam misalignment and gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a trolley in the equipment of the present invention and corresponding devices installed on the trolley;

[0026] Figure 3 It is a schematic diagram of the structure of the extrusion mechanism, the upper and lower clamping mechanisms and the arc-initiating and extinguishing plate assembly mechanism in the device of the present invention;

[0027] Figure 4 yes Figure 3 Partial detail drawing;

[0028] Figure 5 yes Figure 3 Schematic diagram of the working state structure of the middle extrusion mechanism and the upper and lower clamping mechanisms;

[0029] Figure 6 This is a structural diagram of the arc-initiating and arc-extinguishing plate being assembled on the cylinder section;

[0030] Figure 7 It is a schematic diagram of the structure of the magazine-type arc-initiating and arc-extinguishing plate storage bin in the equipment of the present invention;

[0031] Among them: 1-trolley, 2-trolley running track, 3-vertical lifting column, 4-vertical lifting slide, 5-cantilever structure, 6-operating platform, 7-safety fence, 8-ladder, 9-beam, 10-guide groove, 11-extrusion mechanism, 12-cylinder mounting support, 13-extrusion cylinder, 14-extrusion cylinder rod, 15-cylinder support, 16-clamping cylinder, 17-clamping cylinder rod, 18-upper pressure plate, 19-lower pressure plate, 20-guide column, 21-fixed distance backing, 22- Magazine-type arc-starting and extinguishing plate storage bin, 23-cylinder lifting device, 24-guide cylinder, 25-guide movable cover plate, 26-locking bolt, 27-distance bolt, 28-welding robot, 29-cylinder section, 30-arc-starting and extinguishing plate, 31-cylinder section longitudinal seam, 32-boss, 33-upper and lower clamping mechanism, 34-guide sleeve, 35-frame, 36-active roller, 37-driving mechanism, 38-extrusion wheel, 39-circular saw, 40-upper and lower driving mechanism, 41-horizontal driving mechanism. DETAILED DESCRIPTION

[0032] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments. The present invention can be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and the concept of the present invention will be fully conveyed to those skilled in the art, and the present invention will only be limited by the claims.

[0033] like Figure 1-7 As shown, a device for spot welding of cylinder section longitudinal seams and arc-strike and extinguishing plate assembly and arc-strike and extinguishing plate cutting comprises a trolley 1 and a trolley running track 2. Two rows of active rollers are arranged at the bottom of the trolley 1, and the trolley 1 runs on the trolley running track 2.

[0034] A frame 35 is provided on the trolley 1, and a cylinder segment supporting and rotating mechanism, a cylinder segment longitudinal seaming and closing mechanism, and an arc striking and extinguishing plate cutting mechanism are installed on the frame 35.

[0035] A base is provided at one end of the trolley running track 2, on which a vertical lifting column 3 is provided, on which a vertical lifting slide 4 is provided, and the vertical lifting slide 4 can slide up and down on the vertical lifting column 3.

[0036] As an implementation mode of the present invention, the vertical lifting slide 4 uses a motor and a reducer to drive the screw nut to drive the slide plate on the vertical lifting slide 4 to move up and down on the surface of the vertical lifting column 3.

[0037] As another embodiment of the present invention, the vertical lifting slide 4 uses a motor and a reducer to drive the gear rack to drive the slide plate on the vertical lifting slide 4 to move up and down on the surface of the vertical lifting column 3.

[0038] A cantilever structure 5 and an operating platform 6 are installed on the slide of the vertical lifting slide 4. The cantilever structure 5 is equipped with an axial misalignment adjustment mechanism on both sides of the longitudinal seam of the cylinder section, a radial misalignment adjustment mechanism for the longitudinal seam of the cylinder section, and an arc-initiating plate assembly mechanism. The cantilever structure 5 or the operating platform 6 is equipped with a spot welding mechanism for the longitudinal seam of the cylinder section and the arc-initiating plate. A safety fence 7 is arranged around the operating platform 6, and a ladder 8 is installed on the vertical lifting column 3. The setting of the operating platform 6 and the ladder 8 facilitates the operator to perform maintenance when the equipment fails.

[0039] The device of the present invention also includes a control system, which is electrically connected to each actuator and is used to control the start and stop of the driving device on each actuator.

[0040] In the present application, the barrel segment support and rotation mechanism includes active rollers 36 and a driving mechanism 37 arranged on both sides of the frame 35. The driving mechanism 37 is connected to the active rollers 36 to drive the active rollers 36 to rotate. The barrel segment 29 is arranged above the two active rollers 36. The active rollers 36 play the role of supporting the barrel segment 29 and driving the barrel segment 29 to rotate. When the barrel segment longitudinal seam 31 is closed, the axial misalignment adjustment on both sides, the radial misalignment adjustment, the arc-initiating plate 30 assembly, and the barrel segment longitudinal seam 31 and the arc-initiating plate 30 are spot-welded, the driving mechanism 37 drives the active rollers 36 to rotate, drives the barrel segment 29 to rotate, and rotates the barrel segment longitudinal seam 31 of the barrel segment 29 to the top. When the arc-initiating plate 30 is cut, the driving mechanism 37 drives the active rollers 36 to rotate, drives the barrel segment 29 to rotate, and rotates the barrel segment longitudinal seam 31 of the barrel segment 29 to the bottom.

[0041] In the present application, the cylinder segment longitudinal seam closing mechanism includes extrusion wheels 38 arranged on both sides of the frame 35 and driven by the cylinder to close. The frame 35 is provided with an extrusion wheel mounting bracket and a cylinder mounting bracket, the extrusion wheel mounting bracket is rotatably connected to the frame 35, the fixed end of the cylinder is arranged on the cylinder mounting bracket, the movable end is arranged on the extrusion wheel mounting bracket, and the extrusion wheel 38 is arranged on the extrusion wheel 38. The cylinder drives the two extrusion wheel mounting brackets to close each other, thereby extruding the cylinder segment 29 and closing the longitudinal seam 31 of the cylinder segment.

[0042] In the present application, the arc-initiating and extinguishing plate cutting mechanism includes a horizontal driving mechanism 41 arranged at both ends of the frame 35, the movable end of the horizontal driving mechanism 41 is installed with an up-and-down driving mechanism 40, and the movable end of the up-and-down driving mechanism 40 is installed with a circular saw 39.

[0043] Furthermore, the horizontal driving mechanism 41 and the up-down driving mechanism 40 are also provided with a guide component to guide the movement of the horizontal driving mechanism 41 and the up-down driving mechanism 40 .

[0044] The vertical driving mechanism 40 is also equipped with a fixed distance support 21. The horizontal driving mechanism 41 at both ends of the frame drives the vertical driving mechanism 40, the circular saw 39 and the fixed distance support 21 to approach the two ends of the barrel section 29 until the fixed distance support 21 squeezes the two ends of the barrel section 29, and then the vertical driving mechanism 40 is started to drive the circular saw 39 to move downward, and the arc-initiating and extinguishing plates 30 at both ends of the barrel section 29 are cut under the guidance of the fixed distance support 21, and the cutting of the arc-initiating and extinguishing plates 30 is completed.

[0045] In the present application, a crossbeam 9 is installed at the end of the cantilever structure 5, a sensor is installed below the middle of the crossbeam 9, a rectangular channel is provided on the crossbeam 9 along the length direction, and guide grooves 10 are provided on the inner side walls on both sides of the channel along the length direction.

[0046] As an embodiment of the present invention, the cross beam 9 is composed of two long steel plate structures, the middle and both ends of the cross beam 9 are connected to form a rigid body, and the guide groove 10 is arranged on the inner side of the two long steel plates of the cross beam 9.

[0047] A cylinder mounting support 12 is respectively provided at both ends of the guide groove 10 , and the cylinder mounting support 12 can slide in the guide groove 10 .

[0048] The axial misalignment adjustment mechanism on both sides of the longitudinal seam of the barrel section includes two sets of extrusion mechanisms 11, which are arranged at both ends of the cross beam 9. The extrusion mechanism 11 includes an extrusion cylinder 13. Cylinder supports 15 are installed at both ends of the cross beam 9. The front flange of the extrusion cylinder 13 is connected to the cylinder support 15. The extrusion cylinder rod 14 of the extrusion cylinder 13 is connected to one end of the cylinder mounting support 12. The extrusion cylinder 13 drives the cylinder mounting support 12 to slide in the guide groove 10 close to the barrel section 29. The plane at the other end of the cylinder mounting support 12 squeezes the two ends of the barrel section 29 to eliminate the axial misalignment on both sides of the longitudinal seam of the barrel section.

[0049] In the present application, the radial misalignment adjustment mechanism of the longitudinal seam of the cylinder section includes two sets of upper and lower clamping mechanisms 33 , and the upper and lower clamping mechanisms 33 include two clamping cylinders 16 , an upper pressing plate 18 and a lower pressing plate 19 .

[0050] The two clamping cylinders 16 are respectively arranged at the upper and lower ends of the cylinder mounting support 12 , and the clamping cylinder rods 17 of the two clamping cylinders 16 are respectively connected to the upper pressing plate 18 and the lower pressing plate 19 .

[0051] As an embodiment of the present invention, two guide posts 20 are respectively installed on the upper pressing plate 18 and the lower pressing plate 19 , and a guide sleeve 34 matching with the guide posts 20 is installed on the cylinder mounting support 12 .

[0052] The contact parts of the upper pressing plate 18 and the lower pressing plate 19 with the cylinder segment 29 adopt arc surface structure, which matches the arc surface of the cylinder segment 29. The two clamping cylinders 16 drive the upper pressing plate 18 and the lower pressing plate 19 to move closer to each other, and squeeze the cylinder segment 29 in the radial direction to eliminate the radial misalignment of the longitudinal seam of the cylinder segment.

[0053] As an embodiment of the present invention, the cylinder mounting support 12 is a rectangular structure with five end faces, and its upper and lower end faces are used to install the clamping cylinder 16. The two end faces in contact with the guide groove 10 on the crossbeam 9 are provided with a boss 32 that cooperates with the guide groove 10, and the end face located on the outside is used to install the extrusion cylinder 13.

[0054] In the present application, the arc-initiating and extinguishing plate assembly mechanism is arranged on the lower surface of the lower pressure plate 19, and the arc-initiating and extinguishing plate assembly mechanism includes a bullet-type arc-initiating and extinguishing plate storage bin 22, a cylinder lifting device 23, a guide cylinder 24 and a guide movable cover plate 25.

[0055] The upper end surface and the lower end surface of the magazine-type arc-initiating and extinguishing plate storage bin 22 are both provided with openings, and the arc-initiating and extinguishing plates are horizontally stacked in the magazine-type arc-initiating and extinguishing plate storage bin 22.

[0056] A rectangular through hole is provided on the lower pressure plate 19, and the upper end surface of the magazine-type arc-extinguishing plate storage bin 22 is inserted into the rectangular through hole. A magazine accommodating structure is also provided below the rectangular through hole. The magazine-type arc-extinguishing plate storage bin 22 is arranged in the magazine accommodating structure, and openings are also provided at corresponding positions of the upper end surface and the lower end surface of the magazine accommodating structure.

[0057] The cylinder lifting device 23 is arranged below the magazine structure, and a top plate is provided at the movable end of the cylinder lifting device 23, which is connected to the magazine-type arc-extinguishing plate storage bin 22 and the arc-extinguishing plate therein. The top plate pushes the magazine-type arc-extinguishing plate storage bin 22 and the arc-extinguishing plate 30 therein upward through the groove on the magazine-type arc-extinguishing plate storage bin 22 and the magazine structure.

[0058] A guide cylinder mounting support is provided on the lower surface of the lower pressing plate 19, and a guide cylinder 24 is provided on the guide cylinder mounting support on the lower surface of the lower pressing plate 19. A push plate is installed on the movable end of the guide cylinder 24, and a magazine structure is installed on the push plate of the guide cylinder 24. The guide cylinder 24 drives and accommodates the magazine structure and the magazine type arc striking and extinguishing plate storage bin 22 to move horizontally, so that the uppermost arc striking and extinguishing plate 30 is closely attached to the end surface of the longitudinal seam 31 of the barrel section.

[0059] The guide movable cover plate 25 is arranged on the upper pressing plate 18, and the guide movable cover plate 25 can slide along the upper pressing plate 18. A groove is opened in the middle of the upper pressing plate 18 to expose the longitudinal seam of the cylinder section. Locking bolts 26 are arranged on both sides of the guide movable cover plate 25, and a distance bolt 27 is arranged in the middle. After removing the guide movable cover plate 25, the magazine-type arc-initiating and extinguishing plate storage bin 22 can be inserted upward into the rectangular through hole on the lower pressing plate 19, and the guide movable cover plate 25 is reset and fixed with the locking bolt 26. The distance bolt 27 is adjusted to make the uppermost arc-initiating and extinguishing plate 30 flush with the upper surface of the longitudinal seam 31 of the cylinder section. The arc-initiating and extinguishing plates 30 of the same plate thickness can be placed in the same magazine-type arc-initiating and extinguishing plate storage bin 22, and can be quickly replaced and adjusted as needed.

[0060] In the present application, the spot welding mechanism for the longitudinal seam of the cylinder section and the arc-extinguishing plate includes a welding robot 28, which is installed above the operating platform 6 and the cantilever mechanism 5. The welding robot 28 spot welds the longitudinal seam of the cylinder section 31 and the arc-extinguishing plate 30 through the groove opened in the middle of the upper pressure plate 18.

[0061] Working process: After the trolley 1 carries the cylinder segment 29 into the working position, the active roller 36 on the trolley 1 is started to rotate the opening of the cylinder longitudinal seam 31 to the top, and the vertical lifting slide 4 is started to move downward, driving the crossbeam 9 to move downward until the crossbeam 9 contacts the cylinder segment 29 and the sensor sends a signal to stop moving downward. When the crossbeam 9 reaches the working position, the cylinder-driven extrusion wheel 38 is started to make the cylinder segment longitudinal seam 31 generate a closing external force to eliminate the gap.

[0062] The extrusion cylinders 13 in the extrusion mechanisms 11 on both sides are started, so that the planes on the cylinder mounting supports 12 at both ends of the barrel section 29 simultaneously squeeze the two ends of the barrel section longitudinal seam 31 to eliminate the axial misalignment on both sides of the barrel section longitudinal seam 31.

[0063] The clamping cylinders 16 in the upper and lower clamping mechanisms 33 on both sides are started to close the upper and lower pressing plates 18 and 19 and clamp the two ends of the longitudinal seam 31 of the barrel section to eliminate the radial misalignment of the longitudinal seam 31 of the barrel section.

[0064] The arc striking and extinguishing plate assembly mechanism is started to complete the automatic assembly of the arc striking and extinguishing plate 30 .

[0065] The welding robot 28 is started to spot weld the longitudinal seam 31 of the cylinder section and the arc striking and extinguishing plate 30, and the relevant mechanisms are reset and withdrawn in sequence. The transfer mechanism sends the cylinder section 29 to the longitudinal seam welding station for longitudinal seam welding.

[0066] After the longitudinal seam welding of the cylinder segment 29 is completed, the transfer mechanism sends the cylinder segment 29 back to the trolley 1. After the trolley 1 carries the cylinder segment 29 into the working position, the active roller 36 on the trolley 1 is started to rotate the arc-initiating and extinguishing plates 30 at both ends of the longitudinal seam 31 of the cylinder segment to the lowest position. The horizontal drive mechanism 41 located at both ends of the frame 35 is started to drive the upper and lower drive mechanisms 40 and the circular saw 39 to approach both ends of the cylinder body until the fixed-distance backing 21 squeezes both ends of the cylinder segment 29. The upper and lower drive mechanisms 40 are started to drive the circular saw 39 to move downward, and the arc-initiating and extinguishing plates 30 at both ends of the cylinder segment 29 are cut under the guidance of the fixed-distance backing 21. After the cutting is completed, each mechanism is reset, and the cylinder segment 29 is sent to the plate rolling machine by the transfer mechanism for rewinding of the cylinder segment 29. The diameter, length, wall thickness and quantity of the cylinder segment 29 can be input in advance, and the entire working process can be completed in an automatic control mode.

[0067] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A spot welding device for the assembly of longitudinal seams of cylinder sections and arc-initiating and arc-extinguishing plates, as well as an arc-initiating and arc-extinguishing plate cutting device, characterized in that: It comprises a trolley (1) and a trolley running track (2); the trolley (1) is provided with a frame (35); the frame (35) is equipped with a cylinder segment support and rotation mechanism, a cylinder segment longitudinal seaming and closing mechanism, and an arc-initiating and extinguishing plate cutting mechanism; A vertical lifting column (3) is provided at one end of the trolley running track (2), a vertical lifting slide (4) is provided on the vertical lifting column (3), the vertical lifting slide (4) can slide up and down on the vertical lifting column (3), and a cantilever structure (5) is installed on the vertical lifting slide (4); the cantilever structure (5) is equipped with an axial misalignment adjustment mechanism on both sides of the longitudinal seam of the cylinder section, a radial misalignment adjustment mechanism for the longitudinal seam of the cylinder section, an arc-initiating and extinguishing plate assembly mechanism, and a spot welding mechanism for the longitudinal seam of the cylinder section and the arc-initiating and extinguishing plate; A crossbeam (9) is installed at the end of the cantilever structure (5), a sensor is installed below the crossbeam (9), a rectangular channel is provided on the crossbeam (9) along the length direction, guide grooves (10) are provided on the inner side walls on both sides of the channel along the length direction, and a cylinder mounting support (12) is provided at each end of the guide groove (10), and the cylinder mounting support (12) can slide in the guide groove (10); The axial misalignment adjustment mechanism on both sides of the longitudinal seam of the cylinder section comprises two sets of extrusion mechanisms (11), the extrusion mechanisms (11) are arranged at both ends of the cross beam (9), the extrusion mechanisms (11) comprise an extrusion cylinder (13), the front flange of the extrusion cylinder (13) is connected to the cylinder support (15) located at both ends of the cross beam (9), the extrusion cylinder rod (14) of the extrusion cylinder (13) is connected to one end of the cylinder mounting support (12), the extrusion cylinder (13) drives the cylinder mounting support (12) to slide in the guide groove (10) close to the cylinder section (29), and the plane at the other end of the cylinder mounting support (12) squeezes the two ends of the cylinder section (29) to eliminate the axial misalignment on both sides of the longitudinal seam of the cylinder section; The radial misalignment adjustment mechanism of the longitudinal seam of the cylinder section comprises two sets of upper and lower clamping mechanisms (33), and the upper and lower clamping mechanisms (33) comprise two clamping cylinders (16), an upper pressing plate (18), a lower pressing plate (19), a guide column (20) and a guide sleeve (34); The two clamping cylinders (16) are respectively arranged at the upper and lower ends of the cylinder mounting support (12); the clamping cylinder rods (17) of the two clamping cylinders (16) are respectively connected to the upper pressure plate (18) and the lower pressure plate (19); two guide columns (20) are respectively installed on the upper pressure plate (18) and the lower pressure plate (19); a guide sleeve (34) matched with the guide column (20) is installed on the cylinder mounting support (12); the contact parts of the upper pressure plate (18) and the lower pressure plate (19) with the barrel section (29) adopt an arc surface structure; the two clamping cylinders (16) respectively drive the upper pressure plate (18) and the lower pressure plate (19) to move closer to each other, and squeeze the barrel section (29) in the radial direction to eliminate the radial misalignment of the barrel section longitudinal seam; The arc striking and extinguishing plate assembly mechanism is arranged on the lower surface of the lower pressure plate (19), and the arc striking and extinguishing plate assembly mechanism comprises a magazine-type arc striking and extinguishing plate storage bin (22), a cylinder lifting device (23), a guide cylinder (24) and a guide movable cover plate (25); The upper end surface and the lower end surface of the magazine-type arc-initiating and extinguishing plate storage bin (22) are both provided with openings, and the arc-initiating and extinguishing plates are horizontally stacked in the magazine-type arc-initiating and extinguishing plate storage bin (22); The lower pressure plate (19) is provided with a rectangular through hole, the upper end surface of the magazine-type arc-extinguishing plate storage bin (22) is inserted into the rectangular through hole, the cylinder lifting device (23) is arranged below the magazine-type arc-extinguishing plate storage bin (22), the movable end of the cylinder lifting device (23) is provided with a top plate, the top plate is connected to the magazine-type arc-extinguishing plate storage bin (22) and the arc-extinguishing plate therein, and the cylinder lifting device (23) drives the magazine-type arc-extinguishing plate storage bin (22) and the arc-extinguishing plate therein to move upward; The guide cylinder (24) is arranged on the lower surface of the lower pressure plate (19), and the guide cylinder (24) drives the magazine-type arc-initiating and extinguishing plate storage bin (22) to move horizontally, so that the uppermost arc-initiating and extinguishing plate is closely attached to the end surface of the longitudinal seam of the cylinder section; The guide movable cover plate (25) is arranged on the upper pressure plate (18), and the guide movable cover plate (25) can slide along the upper pressure plate (18). A groove is provided in the middle of the upper pressure plate (18) to expose the longitudinal seam of the cylinder section; locking bolts (26) are provided on both sides of the guide movable cover plate (25), and a distance bolt (27) is provided in the middle. The guide movable cover plate (25) is removed, and the magazine-type arc-extinguishing plate storage bin (22) is inserted upward into the rectangular through hole on the lower pressure plate (19), the guide movable cover plate (25) is reset and fixed with the locking bolt (26), and the distance bolt (27) is adjusted to make the uppermost arc-extinguishing plate flush with the upper surface of the longitudinal seam of the cylinder section; The cylinder section longitudinal stitching closing mechanism comprises extrusion wheels (38) arranged on both sides of the frame (35) and driven by a cylinder to close.

2. According to claim 1, a spot welding device for the assembly of the longitudinal seam of the cylinder section and the arc-initiating and extinguishing plate and the arc-initiating and extinguishing plate cutting device, characterized in that: The cylinder segment support and rotation mechanism comprises active rollers (36) and a driving mechanism (37) arranged on both sides of the frame (35); the driving mechanism (37) is connected to the active rollers (36) to drive the active rollers (36) to rotate; and the cylinder segment (29) is arranged above the two active rollers (36).

3. The equipment for spot welding of cylinder section longitudinal seams and arc-initiating and arc-outitiating plates and cutting of arc-initiating and arc-outitiating plates according to claim 1, characterized in that: The arc-extinguishing plate cutting mechanism comprises a horizontal driving mechanism (41) arranged at both ends of the frame (35), an up-and-down driving mechanism (40) is installed at the movable end of the horizontal driving mechanism (41), and a circular saw (39) is installed at the movable end of the up-and-down driving mechanism (40).

4. The equipment for spot welding of cylinder longitudinal seams and arc-initiating and arc-outitiating plates and cutting of arc-initiating and arc-outitiating plates according to claim 1, characterized in that: A groove is provided in the middle of the upper pressing plate (18) to expose the longitudinal seam of the cylinder section. The spot welding mechanism of the longitudinal seam of the cylinder section and the arc striking and extinguishing plate comprises a welding robot (28). The welding robot (28) spot welds the longitudinal seam of the cylinder section and the arc striking and extinguishing plate through the groove provided in the middle of the upper pressing plate (18).

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