A welding mechanism and operation method for bellows welding and processing

Abstract

The present invention relates to the field of bellows welding, and specifically to a welding mechanism and an operation method for bellows welding and processing, including a clamping mechanism for clamping corrugated steel; a brazing mechanism for welding corrugated steel by means of brazing. At both ends of the inner cavity of the brazing mechanism, tubes are symmetrically arranged, and the clamping mechanisms are symmetrically arranged at both ends of the tubes away from the brazing mechanism. The clamping mechanism includes an extension plate, and a bottom rail is fixedly connected to one end of the extension plate away from the brazing mechanism. A sliding disk is slidably fitted on the top of the bottom rail. For this welding mechanism and operation method for bellows welding and processing, the bottom of the clamping head is extruded by a triangular plate, and the clamped clamping head will move upward along the attaching rail. Eventually, the outer side of the clamping head will contact the inner wall of the tube, thereby squeezing the inner wall of the tube and correspondingly realizing the function of clamping.

Description

Technical Field

[0001] The present invention relates to the technical field of bellows welding, and specifically provides a welding mechanism and an operation method for bellows welding and processing. Background Technique

[0002] Brazing refers to a welding method in which a filler metal with a melting point lower than that of the workpiece and the workpiece are simultaneously heated to the melting temperature of the filler metal, and then the liquid filler metal is used to fill the gaps between the solid workpieces to connect the metals. During brazing, it is necessary to first remove the oxide film and oil stain on the contact surface of the base material to facilitate the capillary action after the filler metal melts, and increase the wettability and capillary fluidity of the filler metal. According to the different melting points of the filler metal, brazing is divided into hard brazing and soft brazing.

[0003] During the welding process of the bellows, due to uneven local heating, welding deformation will occur. During welding, the metal in the weld area expands due to heat, while the surrounding metal has a relatively low temperature. This temperature difference leads to different degrees of thermal expansion. When the weld cools, the metal shrinks, causing the bellows to deform. Summary of the Invention

[0004] The present invention aims to provide a welding mechanism and an operation method for bellows welding and processing to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A welding mechanism for bellows welding and processing includes a clamping mechanism for clamping the corrugated steel;

[0006] A brazing mechanism that uses brazing to weld the corrugated steel;

[0007] The two ends of the inner cavity of the brazing mechanism are symmetrically provided with pipe bodies, and the clamping mechanisms are symmetrically arranged at the two ends of the pipe bodies away from the brazing mechanism;

[0008] The clamping mechanism includes an extension plate. One end of the extension plate away from the brazing mechanism is fixedly connected to a bottom rail. A sliding plate is slidably fitted on the top of the bottom rail. A sticking rail is fixedly connected to the inner side of the sliding plate. A clamping head is slidably fitted inside the sticking rail. A triangular plate is press-fitted at the bottom of the clamping head. The triangular plate penetrates through the inner side of the sliding plate and extends to the outside. One end of the triangular plate away from the sliding plate is fixedly connected to a plate frame. A hole groove is provided on the outer side of the plate frame. An insertion rod is slidably fitted inside the hole groove;

[0009] One side of the plate frame away from the triangular plate is fixedly connected to an electric push rod. One end of the electric push rod away from the plate frame is fixedly connected to a folding plate. The folding plate is fixedly connected to the outer end face of the bottom rail.

[0010] Preferably, the brazing mechanism includes a vertical plate, with a first curved rod and a second curved rod respectively connected to the inner side of the vertical plate. The outer side of the first curved rod is fixedly connected to an extension plate, and the top of the second curved rod is fixedly connected to a driving assembly. The outer side of the vertical plate is fixedly connected to a horizontal rail, and a sliding bar is slidably fitted inside the horizontal rail. One end of the sliding bar away from the horizontal rail is fixedly connected to a semi-circular rail, and a brazing assembly is arranged at the central part of the semi-circular rail.

[0011] Preferably, the driving assembly includes a frame fixedly connected to the top of the second curved rod. A small motor is fixedly connected to the central part of the frame. A first leather belt and a first gear are respectively fixedly connected to the outer side of the output end of the small motor, and the bottom end of the first leather belt is fixedly connected to the brazing assembly.

[0012] Preferably, a second gear is meshed and driven on the outer side of the first gear. A driven shaft is fixedly connected to the central part of the second gear. A second leather belt is fixedly connected to the outer side of the driven shaft. One end of the driven shaft away from the second gear is press-fitted with a bearing, and the outer side of the bearing is press-fitted with a sleeve plate, and the sleeve plate is fixedly connected to the outer side of the small motor housing.

[0013] Preferably, the brazing assembly includes a curved slider. The top of the curved slider is fixedly connected to the first leather belt. Both sides of the curved slider are slidably fitted with the semi-circular rail. A brazing head is fixedly connected to the outer side of the curved slider. A first position adjustment assembly is arranged inside the curved slider, and one end of the first position adjustment assembly away from the curved slider is fixedly connected to a pushing assembly.

[0014] Preferably, one end of the pushing assembly away from the first position adjustment assembly is fixedly connected to a small pneumatic component. One end of the small pneumatic component away from the pushing assembly is fixedly connected to a variable-diameter rod. One end of the variable-diameter rod away from the small pneumatic component is fixedly connected to a connecting plate. An electric telescopic rod is fixedly connected to the inner side of the connecting plate, and one end of the electric telescopic rod away from the connecting plate is fixedly connected to the curved slider.

[0015] Preferably, the pushing assembly includes a communicating frame. One end of the communicating frame away from the first position adjustment assembly is fixedly connected to the small pneumatic component. A circular hole plate is fixedly connected to the central part of the communicating frame. Vertical grooves are formed on the surfaces of the circular hole plate and the communicating frame. A sliding plate is slidably fitted inside the vertical grooves. A clamping sleeve is fixedly connected to the outer side of the sliding plate, and a flow pipe is fixedly connected to the central part of the clamping sleeve.

[0016] Preferably, the first position adjustment component includes a fixed pipe fixedly connected to the inside of the curved slider. An insertion pipe is slidably fitted inside the fixed pipe. One end of the insertion pipe away from the curved slider is fixedly connected to the communication frame. A central rod is fixedly connected to the central part of the inner cavity of the insertion pipe. A hydraulic rod is fixedly connected to the inside of the insertion pipe. The bottom end of the hydraulic rod is fixedly connected to a rod sleeve. The rod sleeve is slidably fitted inside the insertion pipe. One end of the rod sleeve away from the hydraulic rod is fixedly connected to a receiving frame. A welding rod is arranged at the center of the top of the receiving frame. The top of the welding rod is press-fitted with a top limit plate, and the top limit plate is fixedly connected to the top of the inner cavity of the insertion pipe.

[0017] Preferably, a feed hole is formed at one end of the insertion pipe close to the curved slider. A limit ring is fixedly connected to the outside of the insertion pipe. A second position adjustment component is arranged inside the insertion pipe, and the outside of the second position adjustment component is fixedly connected to the slide plate.

[0018] An operation method for the welding process of bellows includes the following steps:

[0019] Step 1: Fit the parts of the two pipe bodies to be welded together and then place them at the center of the brazing mechanism. Then, push the sliding plate towards the pipe bodies, so that the sliding plate will move inward along the bottom rail and drive the attachment rail. A clamping head is slidably fitted inside the attachment rail. Therefore, the clamping head will extend into the inside of the other end of the pipe body. Then, start the electric push rod, so that the plate frame connected to its telescopic end will drive the triangular plate to insert into the inside of the sliding plate and extend to the other side. Then, the triangular plate will squeeze the bottom of the clamping head, and the clamped clamping head will move upward along the attachment rail. Finally, the outside of the clamping head will contact the inner wall of the pipe body and perform extrusion clamping treatment. There is a certain frictional force between the insertion rod and the hole grooves formed on the surface of the plate frame. Therefore, the insertion rod can be manually displaced in the hole grooves to perform insertion and limit treatment on the holes on different pipe bodies;

[0020] Step 2: By moving the sliding bar outward along the horizontal rail, the two semi-circular rails will move towards both sides, providing a larger placement space for the pipe body. After the two pipe bodies are fitted together, the two semi-circular rails are closed and closely attached to the fitted part of the two pipe bodies, preparing for the subsequent brazing process. By starting the small motor, the first leather belt connected to its output end will be wound, and at the same time, the brazing component connected to the bottom of the first leather belt will move upward along the semi-circular rail to adjust the position of the brazing component. In addition, a first gear is fixedly connected to the outer side of the output shaft of the small motor, and a second gear is meshed and driven on the outer side of the first gear. The center of the second gear is connected to the driven shaft, and the outer side of the driven shaft is connected to the second leather belt. At this time, the second leather belt will drive another brazing component to move upward along the other semi-circular rail, so as to weld the pipe body by using the symmetric welding method;

[0021] Step 3: By starting the electric telescopic rod, the connecting plate connected to its telescopic end will drive the variable-diameter rod to move towards the center. The other end of the variable-diameter rod is connected to the pushing component through a small pneumatic component, and the other end of the pushing component is connected to the first positioning component. Therefore, the first positioning component will pass through the curved slider and move towards the center, approaching the part where the two pipe bodies are fitted together. Before placing the pipe body, the welding rod needs to be inserted into the receiving rack through the feeding hole. Then, start the small pneumatic component, so that it will introduce the gas with impact into the flow pipe. Then, the gas will pass through the flow pipe and the ferrule into the insertion pipe in turn, and push the welding rod arranged on the receiving rack outward. At the same time, start the brazing head and generate a flame to melt the welding rod, and at the same time, perform brazing connection on the part where the two pipe bodies are fitted together

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The bottom of the clamping head is extruded by the triangular plate, and the clamped clamping head will move upward along the attaching rail. Finally, the outer side of the clamping head will contact the inner wall of the pipe body, so as to extrude the inner wall of the pipe body, and correspondingly realize the function of clamping treatment.

[0024] 2. By using the symmetric welding method to weld the pipe body, two welds are welded at opposite positions on the circumference of the pipe body. The deformation directions generated by the cooling and contraction of these two welds are opposite, so they balance each other to a certain extent and reduce the overall circumferential deformation.

[0025] 3. It is connected by a small pneumatic component to a pushing component, and the other end of the pushing component is connected by a first position adjustment component. Therefore, the first position adjustment component will move through the curved slider towards the center and approach the part where the two pipe bodies are in contact, so as to play a role in brazing both pipes with the same diameter and pipes with different diameters.

[0026] 4. The ferrule fixedly connected to the other end of the slide plate and the flow pipe will move towards the center together, so as to keep the flow pipe and the welding rod at the same height all the time, which is convenient for the impact gas to gradually push the welding rod outwards. At this moment, the welding rods will gather together, so as to play a role in fully welding the pipe body with a smaller weld seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the external structure of a welding mechanism for welding corrugated pipes according to the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of the clamping mechanism of the present invention.

[0029] Figure 3 It is a schematic cross-sectional view of the clamping mechanism of the present invention.

[0030] Figure 4 It is a schematic diagram of the structure of the brazing mechanism of the present invention.

[0031] Figure 5 It is a schematic diagram of the structure of the driving component of the present invention.

[0032] Figure 6 For the present invention Figure 5 An enlarged schematic diagram of the structure at A in the figure.

[0033] Figure 7 It is a schematic cross-sectional view of some components of the brazing mechanism of the present invention.

[0034] Figure 8 It is a schematic diagram of the structure of the brazing component of the present invention.

[0035] Figure 9 It is a schematic cross-sectional view of the pushing component of the present invention.

[0036] Figure 10 For the present invention Figure 9 An enlarged schematic diagram of the structure at B in the figure.

[0037] Figure 11 It is a schematic longitudinal cross-sectional view of the first position adjustment component of the present invention.

[0038] Figure 12 For the present invention Figure 11 An enlarged schematic diagram of the structure at C in the figure.

[0039] Figure 13 This is a schematic structural diagram of the first position adjustment component of the present invention.

[0040] Figure 14 This is a schematic internal structure diagram of the first position adjustment component of the present invention.

[0041] In the figure: 1. Clamping mechanism; 2. Brazing mechanism; 3. Pipe body; 11. Extension plate; 12. Bottom rail; 13. Slide plate; 14. Rail attachment; 15. Clamping head; 16. Triangular plate; 17. Plate frame; 18. Hole groove; 19. Insertion rod; 10. Electric push rod; 101. Folding plate; 21. Vertical plate; 22. First curved rod; 23. Second curved rod; 24. Driving assembly; 25. Cross rail; 26. Slide connection strip; 27. Semi-circular rail; 28. Brazing assembly; 241. Frame; 242. Small motor; 243. First leather belt; 244. First gear; 245. Second gear; 246. Driven shaft; 247. Second leather belt; 248. Bearing; 249. Sleeve plate; 281. Curved slider; 282. Brazing head; 283. First position adjustment component; 284. Pushing assembly; 285. Small pneumatic component; 286. Variable diameter rod; 287. Connecting plate; 288. Electric telescopic rod; 2841. Connecting frame; 2842. Round hole plate; 2843. Vertical groove; 2844. Slide plate; 2845. Clamping sleeve; 2846. Flow pipe; 2831. Fixed pipe; 2832. Insertion pipe; 2833. Central rod; 2834. Hydraulic rod; 2835. Rod sleeve; 2836. Bearing frame; 2837. Welding rod; 2838. Feeding hole; 2839. Limit ring; 2830. Second position adjustment component; 8301. Top limit plate. Specific embodiments

[0042] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following described embodiments or technical features can form a new embodiment. It should be known that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1 to 14 , the present invention provides a technical solution: as Figure 1 , Figure 2 and Figure 3 shown, including a clamping mechanism 1, which is used for clamping corrugated steel;

[0044] A brazing mechanism 2, which uses brazing means to weld corrugated steel;

[0045] At both ends of the inner cavity of the brazing mechanism 2, pipe bodies 3 are symmetrically arranged, and the clamping mechanisms 1 are symmetrically arranged at both ends of the pipe bodies 3 far from the brazing mechanism 2.

[0046] Among them, the clamping mechanism 1 includes an extension plate 11. One end of the extension plate 11 far from the brazing mechanism 2 is fixedly connected with a bottom rail 12. A sliding disk 13 is slidably fitted on the top of the bottom rail 12. An attaching rail 14 is fixedly connected to the inner side of the sliding disk 13. A clamping head 15 is slidably fitted inside the attaching rail 14. A triangular plate 16 is extrusion-fitted to the bottom of the clamping head 15. The triangular plate 16 penetrates through the inner side of the sliding disk 13 and extends to its outside. One end of the triangular plate 16 far from the sliding disk 13 is fixedly connected with a plate frame 17. A hole groove 18 is formed on the outer side of the plate frame 17. An inserting rod 19 is slidably fitted inside the hole groove 18. There is a certain frictional force between the inserting rod 19 and the hole groove 18 formed on the surface of the plate frame 17. Therefore, the inserting rod 19 can be manually displaced in the hole groove 18, so as to play a role in inserting and limiting the holes on different pipe bodies 3, and at the same time play a role in initially clamping the pipe body 3. One side of the plate frame 17 far from the triangular plate 16 is fixedly connected with an electric push rod 10. One end of the electric push rod 10 far from the plate frame 17 is fixedly connected with a folding plate 101. The folding plate 101 is fixedly connected to the outer end face of the bottom rail 12. By fitting the parts of the two pipe bodies 3 to be welded together and then placing them at the central part of the brazing mechanism 2, then pushing the sliding disk 13 in the direction of the pipe body 3, the sliding disk 13 will move along the bottom rail 12 and drive the attaching rail 14 to move into the inside of the pipe body 3. Since the clamping head 15 is slidably fitted inside the attaching rail 14, the clamping head 15 will extend into the inside of the other end of the pipe body 3. Then start the electric push rod 10. The electric push rod 10 can be manual or electric. The plate frame 17 connected to its telescopic end will drive the triangular plate 16 to insert into the inner side of the sliding disk 13 and extend to the other side. Then the triangular plate 16 will squeeze the bottom of the clamping head 15, and the clamped clamping head 15 will move upward along the attaching rail 14. Finally, the outer side of the clamping head 15 will contact the inner wall of the pipe body 3, so as to squeeze the inner wall of the pipe body 3 and correspondingly realize the clamping function.

[0047] Such as Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown in the figure, the brazing mechanism 2 includes a vertical plate 21. Inside the vertical plate 21, a first curved rod 22 and a second curved rod 23 are respectively connected. The outside of the first curved rod 22 is fixedly connected to the extension plate 11. The top of the second curved rod 23 is fixedly connected to a driving assembly 24. The outside of the vertical plate 21 is fixedly connected to a horizontal rail 25. A sliding strip 26 is slidably fitted inside the horizontal rail 25. One end of the sliding strip 26 away from the horizontal rail 25 is fixedly connected to a semi-circular rail 27. A brazing assembly 28 is arranged at the central part of the semi-circular rail 27. By moving the sliding strip 26 along the horizontal rail 25 outwards, the two semi-circular rails 27 will move towards both sides, giving the pipe body 3 a larger placement space. After the two pipe bodies 3 are fitted together, the two semi-circular rails 27 are then closed and closely attached to the part where the two pipe bodies 3 are fitted, preparing for the subsequent brazing treatment.

[0048] The driving assembly 24 includes a frame 241 which is fixedly connected to the top of the second curved rod 23. A small motor 242 is fixedly connected to the central part of the frame 241. A first leather belt 243 and a first gear 244 are respectively fixedly connected to the outside of the output end of the small motor 242. The bottom end of the first leather belt 243 is fixedly connected to the brazing assembly 28. A second gear 245 is meshed and driven on the outside of the first gear 244. A driven shaft 246 is fixedly connected to the central part of the second gear 245. A second leather belt 247 is fixedly connected to the outside of the driven shaft 246. By starting the small motor 242, the first leather belt 243 connected to its output end will be wound up. At the same time, the brazing assembly 28 connected to the bottom end of the first leather belt 243 will move upwards along the semi-circular rail 27, thus playing a role in moving and adjusting the position of the brazing assembly 28. In addition, the brazing assembly 28 will rotate around the center point of the semi-circular rail 27 with the center point of the semi-circular rail 27 as the center. In addition, a first gear 244 is also fixedly connected to the outside of the output shaft of the small motor 242, and a second gear 245 is meshed and driven on the outside of the first gear 244. The central part of the second gear 245 is connected to the driven shaft 246, and the outside of the driven shaft 246 is connected to the second leather belt 247. At this time, the second leather belt 247 will drive another brazing assembly 28 to move upwards along the other semi-circular rail 27. The pipe body 3 is welded by using the symmetric welding method. By welding two welds at opposite positions on the circumference of the pipe body 3, the deformation directions generated when these two welds cool and shrink are opposite, so they balance each other to a certain extent and reduce the overall circumferential deformation. One end of the driven shaft 246 away from the second gear 245 is press-fitted with a bearing 248, and the outside of the bearing 248 is press-fitted with a sleeve plate 249. The sleeve plate 249 is fixedly connected to the outside of the housing of the small motor 242.

[0049] As Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、Figure 12 , Figure 13 and Figure 14 As shown in Figure 12 , Figure 13 and Figure 14 , the brazing assembly 28 includes a curved slider 281. The top of the curved slider 281 is fixedly connected to the first leather strip 243. Both sides of the curved slider 281 are slidably adapted to the semi-circular rail 27. The outer side of the curved slider 281 is fixedly connected to a brazing head 282. The inside of the curved slider 281 is provided with a first position adjustment assembly 283. One end of the first position adjustment assembly 283 away from the curved slider 281 is fixedly connected to a pushing assembly 284. One end of the pushing assembly 284 away from the first position adjustment assembly 283 is fixedly connected to a small pneumatic component 285. One end of the small pneumatic component 285 away from the pushing assembly 284 is fixedly connected to a variable diameter rod 286. One end of the variable diameter rod 286 away from the small pneumatic component 285 is fixedly connected to a connecting plate 287. The inner side of the connecting plate 287 is fixedly connected to a power telescopic rod 288. One end of the power telescopic rod 288 away from the connecting plate 287 is fixedly connected to the curved slider 281. By starting the power telescopic rod 288, the connecting plate 287 connected to its telescopic end will drive the variable diameter rod 286 to move towards the center. The other end of the variable diameter rod 286 is connected to the pushing assembly 284 through the small pneumatic component 285, and the other end of the pushing assembly 284 is connected through the first position adjustment assembly 283. Therefore, the first position adjustment assembly 283 will pass through the curved slider 281 and move towards the center, and approach the part where the two pipe bodies 3 are in contact, so as to play a role in brazing the pipe bodies 3 with the same diameter and the pipe bodies 3 with different diameters.

[0050] The pushing assembly 284 includes a communication frame 2841. One end of the communication frame 2841 away from the first position adjustment assembly 283 is fixedly connected to the small pneumatic component 285. The central part of the communication frame 2841 is fixedly connected to a round hole plate 2842. Vertical grooves 2843 are formed on the surfaces of the round hole plate 2842 and the communication frame 2841. A slide plate 2844 is slidably adapted to the inside of the vertical groove 2843. The outer side of the slide plate 2844 is fixedly connected to a ferrule 2845. The central part of the ferrule 2845 is fixedly connected to a flow pipe 2846. Before placing the pipe body 3, the welding rod 2837 needs to be inserted into the receiving frame 2836 through the feeding hole 2838. Then start the small pneumatic component 285, so that it will introduce the impact gas into the flow pipe 2846. Then the gas will pass through the flow pipe 2846 and the ferrule 2845 in sequence and enter the insertion pipe 2832, and push the welding rod 2837 arranged on the receiving frame 2836 outwards. At the same time, start the brazing head 282 and generate a tongue of fire to melt the welding rod 2837, so as to play a role in brazing and connecting the part where the two pipe bodies 3 are in contact. The above three welding rods 2837 are melted and welded separately, so the pipe body 3 with a larger weld can be welded.

[0051] The first position adjustment component 283 includes a fixed pipe 2831 which is fixedly connected inside the curved slider 281. A plug-in pipe 2832 is slidably fitted inside the fixed pipe 2831. One end of the plug-in pipe 2832 away from the curved slider 281 is fixedly connected to the communication frame 2841. A central rod 2833 is fixedly connected to the central part of the inner cavity of the plug-in pipe 2832. A hydraulic rod 2834 is fixedly connected inside the plug-in pipe 2832. The bottom end of the hydraulic rod 2834 is fixedly connected to a rod sleeve 2835. The rod sleeve 2835 is slidably fitted inside the plug-in pipe 2832. One end of the rod sleeve 2835 away from the hydraulic rod 2834 is fixedly connected to a bearing frame 2836. A welding rod 2837 is arranged at the center of the top of the bearing frame 2836. The top of the welding rod 2837 is extrusion-fitted with a top limit plate 8301 which is fixedly connected to the top of the inner cavity of the plug-in pipe 2832. A material inlet hole 2838 is opened at one end of the plug-in pipe 2832 close to the curved slider 281. A limit ring 2839 is fixedly connected to the outside of the plug-in pipe 2832. A second position adjustment component 2830 is arranged inside the plug-in pipe 2832. The outside of the second position adjustment component 2830 is fixedly connected to the slide plate 2844. Additionally, the hydraulic rod 2834 can be activated, so that the rod sleeve 2835 connected to its telescopic end will drive the bearing frame 2836 to move towards the center. At the same time, the welding rod 2837 arranged on the bearing frame 2836 will move towards the center accordingly. There is a certain frictional force between the welding rod 2837 and the bearing frame 2836, so the two welding rods 2837 on both sides cannot fall off. Then, the hydraulic rod 2834 inside the second position adjustment component 2830 is activated. The outside of this hydraulic rod 2834 is not only connected to another rod sleeve 2835 but also connected to the slide plate 2844. Therefore, the ferrule 2845 fixedly connected to the other end of the slide plate 2844 and the flow pipe 2846 will move towards the center together, so as to keep the flow pipe 2846 and the welding rod 2837 at the same height all the time, which is convenient for the impact gas to make the welding rod 2837 gradually extend outwards. At this moment, the welding rods 2837 will gather together, so as to fully weld the pipe body 3 with a smaller weld seam. In addition, the top limit plate 8301 plays a role in limiting the welding rod 2837 during the upward reset process.

[0052] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Those of ordinary skill in the art, starting from the above concepts and without creative labor, can make various changes, all of which fall within the scope of protection of the present invention.

Claims

1. A welding mechanism for bellows welding, characterized in that: include: A clamping mechanism (1), the clamping mechanism (1) being used for clamping corrugated steel; A brazing mechanism (2), wherein the brazing mechanism (2) uses brazing to perform a welding process on the corrugated steel; Tube bodies (3) are symmetrically arranged at both ends of the inner cavity of the brazing mechanism (2), and the clamping mechanism (1) is symmetrically arranged at both ends of the tube body (3) away from the brazing mechanism (2); The clamping mechanism (1) comprises an extension plate (11), one end of the extension plate (11) away from the brazing mechanism (2) is fixedly connected to a bottom rail (12), the top of the bottom rail (12) is slidably adapted with a sliding plate (13), the inner side of the sliding plate (13) is fixedly connected to a rail (14), the inner side of the rail (14) is slidably adapted with a clamping head (15), the bottom of the clamping head (15) is extruded and adapted with a triangular plate (16), the triangular plate (16) is inserted into the inner side of the sliding plate (13) and extends to the outer side thereof, the end of the triangular plate (16) away from the sliding plate (13) is fixedly connected to a plate frame (17), the outer side of the plate frame (17) is provided with a hole groove (18), and the inner side of the hole groove (18) is slidably adapted with an insertion rod (19); An electric push rod (10) is fixedly connected to one side of the plate frame (17) away from the triangular plate (16), and a folding plate (101) is fixedly connected to one end of the electric push rod (10) away from the plate frame (17), and the folding plate (101) is fixedly connected to the outer end surface of the bottom rail (12); The brazing mechanism (2) comprises a vertical plate (21), the inner side of the vertical plate (21) is respectively connected to a first curved rod (22) and a second curved rod (23), the outer side of the first curved rod (22) is fixedly connected to the extension plate (11), the top of the second curved rod (23) is fixedly connected to a driving assembly (24), the outer side of the vertical plate (21) is fixedly connected to a cross rail (25), the interior of the cross rail (25) is slidably adapted to be provided with a sliding bar (26), the end of the sliding bar (26) away from the cross rail (25) is fixedly connected to a semi-circular rail (27), and a brazing assembly (28) is provided at the center of the semi-circular rail (27); The driving assembly (24) comprises a frame (241), wherein the frame (241) is fixedly connected to the top of the second crank rod (23), a small motor (242) is fixedly connected to the center of the frame (241), and a first leather strip (243) and a first gear (244) are fixedly connected to the outer side of the output end of the small motor (242), wherein the bottom end of the first leather strip (243) is fixedly connected to the brazing assembly (28); The outer side of the first gear (244) is meshed with the second gear (245), the center of the second gear (245) is fixedly connected to a driven shaft (246), the outer side of the driven shaft (246) is fixedly connected to a second leather strip (247), the end of the driven shaft (246) away from the second gear (245) is extruded and adapted with a bearing (248), the outer side of the bearing (248) is extruded and adapted with a sleeve plate (249), and the sleeve plate (249) is fixedly connected to the outer side of the housing of the small motor (242); The brazing assembly (28) includes a curved slider (281), the top of which is fixedly connected to a No. 1 leather strip (243), both sides of which are slidably adapted to the semi-annular rail (27), a brazing head (282) is fixedly connected to the outer side of the curved slider (281), a No. 1 positioning assembly (283) is disposed inside the curved slider (281), and a pushing assembly (284) is fixedly connected to one end of the No. 1 positioning assembly (283) away from the curved slider (281).

2. The welding mechanism for bellows welding according to claim 1, characterized in that: One end of the pushing component (284) away from the first adjustment component (283) is fixedly connected to a small pneumatic component (285), one end of the small pneumatic component (285) away from the pushing component (284) is fixedly connected to a reducing rod (286), one end of the reducing rod (286) away from the small pneumatic component (285) is fixedly connected to a connecting plate (287), an inner side of the connecting plate (287) is fixedly connected to an electric telescopic rod (288), and one end of the electric telescopic rod (288) away from the connecting plate (287) is fixedly connected to a curved slider (281).

3. The welding mechanism for bellows welding according to claim 2, characterized in that: The pushing component (284) comprises a connecting frame (2841), one end of the connecting frame (2841) away from the first adjusting component (283) is fixedly connected to the small pneumatic component (285), a circular hole plate (2842) is fixedly connected to the central part of the connecting frame (2841), the surfaces of the circular hole plate (2842) and the connecting frame (2841) are both provided with vertical grooves (2843), the interior of the vertical groove (2843) is slidably adapted with a slide plate (2844), the outer side of the slide plate (2844) is fixedly connected to a sleeve (2845), and the central part of the sleeve (2845) is fixedly connected to a circulation tube (2846).

4. The welding mechanism for bellows welding according to claim 3, characterized in that: The first positioning assembly (283) comprises a fixed tube (2831), the fixed tube (2831) being fixedly connected to the interior of the curved slider (281), the interior of the fixed tube (2831) being slidably adapted to be provided with a plug-in tube (2832), one end of the plug-in tube (2832) being away from the curved slider (281) being fixedly connected to a connecting frame (2841), a center rod (2833) being fixedly connected to the center portion of the inner cavity of the plug-in tube (2832), and a hydraulic rod (2834) being fixedly connected to the interior of the plug-in tube (2832), The bottom end of the hydraulic rod (2834) is fixedly connected to a rod sleeve (2835), and the rod sleeve (2835) is slidably adapted inside the plug-in tube (2832). The end of the rod sleeve (2835) away from the hydraulic rod (2834) is fixedly connected to a receiving frame (2836), and a welding rod (2837) is arranged at the center of the top of the receiving frame (2836). The top of the welding rod (2837) is extruded and adapted with a top limit plate (8301), and the top limit plate (8301) is fixedly connected to the top of the inner cavity of the plug-in tube (2832).

5. The welding mechanism for bellows welding according to claim 4, characterized in that: An inlet hole (2838) is provided at one end of the plug-in tube (2832) close to the curved slider (281); a limit ring (2839) is fixedly connected to the outer side of the plug-in tube (2832); a second position adjustment component (2830) is provided inside the plug-in tube (2832); and the outer side of the second position adjustment component (2830) is fixedly connected to the slide plate (2844).

6. An operating method for bellows welding, used in the welding mechanism for bellows welding according to claim 5, characterized in that: The following steps are involved: Step 1: The parts of the two tube bodies (3) to be welded are fitted together and then placed in the center of the brazing mechanism (2), and then the sliding plate (13) is pushed toward the tube body (3), so that the sliding plate (13) moves inward along the bottom rail (12) and with the rail (14), wherein the internal sliding of the rail (14) is adapted to have a clamping head (15), so that the clamping head (15) extends into the other end of the tube body (3), and then the electric push rod (10) is started, so that the plate frame (17) connected to the telescopic end thereof is inserted into the sliding plate (13) with the triangular plate (16). ) and extends to the other side thereof, and then the triangular plate (16) will squeeze the bottom of the clamping head (15), and the squeezed clamping head (15) will move upward along the track (14), and finally the outer side of the clamping head (15) will contact the inner wall of the tube body (3) and squeeze and clamp it. There is a certain friction between the insertion rod (19) and the hole groove (18) opened on the surface of the plate frame (17), so the insertion rod (19) is manually displaced in the hole groove (18) to achieve the insertion and limiting treatment of the holes on different tube bodies (3); Step 2: By moving the sliding strip (26) outward along the horizontal rail (25), the two semi-circular rails (27) will move toward both sides to provide a larger placement space for the tube body (3). When the two tube bodies (3) are fitted together, the two semi-circular rails (27) are closed and tightly attached to the part where the two tube bodies (3) are fitted together to prepare for the subsequent brazing process. By starting the small motor (242), the No. 1 leather strip (243) connected to its output end will be rolled up, and at the same time, the brazing assembly (28) connected to the bottom end of the No. 1 leather strip (243) will move upward along the semi-circular rail (27). The orientation of the brazing assembly (28) is moved and adjusted. In addition, a first gear (244) is fixedly connected to the outer side of the output shaft of the small motor (242), and a second gear (245) is meshed and driven on the outer side of the first gear (244). The center of the second gear (245) is connected to the driven shaft (246), and the outer side of the driven shaft (246) is connected to the second belt (247). At this time, the second belt (247) will move another brazing assembly (28) upward along another semi-circular track (27), so that the tube body (3) is welded by a symmetrical welding method. Step 3: By starting the electric telescopic rod (288), the connecting plate (287) connected to the telescopic end thereof will move the diameter-changing rod (286) toward the center, and the other end of the diameter-changing rod (286) is connected to the pushing assembly (284) through the small gas pressure piece (285), and the other end of the pushing assembly (284) is connected through the first adjustment assembly (283), so the first adjustment assembly (283) will pass through the curved slider (281) and move toward the center and approach the part where the two tubes (3) are in contact. Before placing the tube (3), the welding rod (2837) needs to be placed. ) extends into the receiving frame (2836) through the feed hole (2838), and then the small air pressure piece (285) is started, so that it will pass the gas with impact into the circulation pipe (2846), and then the gas will enter the plug-in pipe (2832) through the circulation pipe (2846) and the ferrule (2845) in sequence, and push the welding rod (2837) set on the receiving frame (2836) outward. At the same time, the brazing head (282) is started again, and a flame is generated to melt the welding rod (2837), and at the same time, the parts where the two tube bodies (3) are in contact with each other are brazed and connected.

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