A welding device for flange production

Abstract

The application belongs to the technical field of flange production and processing, and particularly relates to a welding equipment for flange production, which comprises a welding mechanism, a feeding conveying mechanism and a discharging conveying mechanism, the feeding conveying mechanism comprises a flange neck conveying mechanism, a flange plate conveying mechanism and a feeding clamping mechanism, the flange neck conveying mechanism and the flange plate conveying mechanism each comprise a conveying assembly and a centering and ejecting assembly, the feeding clamping mechanism comprises a linear slide rail assembly and a rotary clamping assembly, the rotary clamping assembly is in sliding connection with the linear slide rail assembly, and the welding mechanism comprises a welding platform, a welding gun and a degree of freedom adjusting assembly; the welding equipment can solve the problems of poor adaptability, insufficient clamping stability, low welding precision, low automation degree and low production efficiency of the existing welding equipment for flange production, realize feeding, stable clamping, automatic uniform-speed welding and continuous discharging of flange plates of different specifications, and improve the flange welding quality and batch production efficiency.

Description

Technical Field

[0001] This invention relates to the field of flange manufacturing and processing technology, specifically to a welding equipment for flange production. Background Technology

[0002] A flange generally consists of a flange plate and a flange neck. During the flange manufacturing process, the flange plate and flange neck need to be welded together. Current welding equipment has a simple structural design and limited functionality. Most of it can only achieve simple positioning and clamping, and cannot adaptively adapt and fix flange plates of different specifications. The clamping stability is poor, and the flange plate is prone to slight displacement and shaking during the welding process, which further affects the welding accuracy. Existing welding operations mostly employ manual hand-held welding torches or simple welding fixtures. Manual welding demands extremely high operator skill and is prone to problems such as uneven weld width, weld misalignment, and inconsistent penetration depth, resulting in poor flange weld quality and a high defect rate. Furthermore, manual welding is labor-intensive and inefficient, failing to meet the demands of modern flange mass production. Welding with simple fixtures struggles to achieve automated, uniform welding, has poor control over the welding trajectory, and is prone to defects such as incomplete welds, missed welds, and weld beads. These defects not only reduce the quality of flange products but also significantly shorten the lifespan of flange fittings and increase production costs for enterprises.

[0003] Therefore, there is an urgent need to design a new type of welding equipment for flange production to solve the problems existing in the above-mentioned technologies. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a welding equipment for flange production. This equipment solves the problems of poor adaptability, insufficient clamping stability, low welding accuracy, low automation, and low production efficiency of existing flange production welding equipment. It enables continuous feeding, stable clamping, automatic uniform speed welding, and unloading of flanges of different specifications, thereby improving flange welding quality and batch production efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A welding device for flange production includes a welding platform and a welding torch, the welding torch being mounted on a degree-of-freedom adjustment assembly; the welding platform includes a base and an operating table rotatably connected to the base, a chuck being rotatably mounted on the operating table, a rotary motor being fixedly connected to the inner bottom wall of the base, the output end of the rotary motor being fixedly connected to the chuck, a clamping mechanism being provided on one side of the chuck, a transmission screw being fixedly connected inside the operating table, the two ends of the transmission screw being rotatably connected to the two ends of the base respectively, a stepper motor being fixedly connected to the inner wall of one side of the base, the output end of the stepper motor being connected to a transmission assembly, the transmission assembly being drively connected to one end of the transmission screw.

[0006] As a further improvement, the clamping mechanism includes a rotating sleeve fixedly connected to the operating table, a support frame fixedly connected to the bottom of the operating table, an electric push rod fixedly connected to the support frame, a rotating rod rotatably disposed inside the rotating sleeve, the bottom of the rotating rod being fixedly connected to the output end of the electric push rod, a pin being provided on the rotating rod, an arc-shaped groove being provided on the rotating sleeve, the pin being slidably connected to the arc-shaped groove, a connecting plate being fixedly connected to the top end of the rotating rod, and a clamping block being connected to the end of the connecting plate away from the rotating rod.

[0007] As a further improvement, a sliding rod is fixedly connected to the top of the clamping block. The sliding rod passes through the connecting plate upward and is slidably connected to the connecting plate. A spring is sleeved on the sliding rod. The two ends of the spring abut against the top of the clamping block and the bottom of the connecting plate, respectively. A limiting ring is provided at the top of the sliding rod. A limiting ring is fixedly connected to the top of the end of the connecting plate away from the rotating rod. The outer diameter of the limiting ring is larger than the inner diameter of the limiting ring.

[0008] As a further improvement, a feeding conveying mechanism is also included, which includes a flange neck conveying mechanism, a flange conveying mechanism, and a feeding clamping mechanism. The flange neck conveying mechanism and the flange conveying mechanism each include a feeding conveying component and a centering ejection component. The feeding clamping mechanism includes a linear slide rail component and a rotary clamping component, and the rotary clamping component is slidably connected to the linear slide rail component.

[0009] As a further improvement, the centering ejection assembly includes a fixed plate fixedly connected to the conveying assembly. An ejection cylinder is fixedly connected to the bottom of the fixed plate. The output end of the ejection cylinder passes through the fixed plate and is fixedly connected to a lifting platform. A fixed block is fixedly installed at the top center of the lifting platform. A rocker arm is rotatably connected to the top center of the fixed block. A first clamping plate and a second clamping plate are respectively hinged to both ends of the rocker arm. A horizontal push cylinder is fixedly connected to the lower side wall of the fixed block. The output end of the horizontal push cylinder passes through the fixed block and is fixedly connected to the lower part of the first clamping plate. Both ends of the top of the first clamping plate and the second clamping plate are provided with ejector claws. A position sensor is provided on the conveying assembly.

[0010] As a further improvement, the rotary clamping assembly includes a first clamping fixing plate slidably connected to the linear slide rail assembly. A rotary cylinder is fixedly connected to the bottom of the first clamping fixing plate, and a rotary disk is fixedly connected to the output end of the rotary cylinder. A second clamping fixing plate is fixedly connected to the bottom of the rotary disk. Flange jaws and flange neck jaws are respectively provided at both ends of the second clamping fixing plate. The flange jaws and flange neck jaws are arranged perpendicular to each other. An L-shaped fixing plate is provided on the first clamping fixing plate, and an ultrasonic testing probe is provided at one end of the L-shaped fixing plate.

[0011] As a further improvement, both the linear guide rail assembly and the degree-of-freedom adjustment assembly are three-axis linear modules. The three-axis linear module includes an X-axis guide rail, a Y-axis guide rail, and a Z-axis guide rail. An X-axis electric cylinder, a Y-axis electric cylinder, and a Z-axis electric cylinder are respectively fixedly connected to one end of the X-axis guide rail, the X-axis electric cylinder is fixedly connected to an X-axis slider that is slidably connected to the X-axis guide rail, the Y-axis guide rail is fixedly connected to the X-axis slider, the Y-axis electric cylinder is fixedly connected to a Y-axis slider that is slidably connected to the Y-axis guide rail, the Z-axis guide rail is fixedly connected to the Y-axis slider, and a Z-axis electric cylinder is fixedly connected to the top end of the Z-axis guide rail. The Z-axis electric cylinder is fixedly connected to a Z-axis slider that is slidably connected to the Z-axis guide rail.

[0012] As a further improvement, a welding frame is slidably connected to the Z-axis guide rail of the degree-of-freedom adjustment assembly, the welding torch is fixedly connected to the welding frame, a seventh electric cylinder is fixedly connected to the welding frame, the output shaft of the seventh electric cylinder is fixedly connected to a first support plate, the output shaft of the seventh electric cylinder is slidably connected to the welding frame, support rods are symmetrically fixedly connected to the side of the first support plate away from the seventh electric cylinder, a second support plate is fixedly connected to the end of the two support rods away from the first support plate, and an arc-shaped preheating ring is fixedly connected to the side of the second support plate away from the support rods.

[0013] As a further improvement, the discharge conveying mechanism is located on one side of the welding platform. The discharge conveying mechanism includes a discharge conveying component and an insulation box. The discharge conveying component is located inside the insulation box, and the inner wall of the insulation box is provided with an air duct.

[0014] As a further improvement, both the feeding conveyor assembly and the discharging conveyor assembly include a conveyor frame. The two ends of the conveyor frame are respectively provided with a driving roller and a driven roller. A servo motor is provided on one side wall of the conveyor frame. The output shaft of the servo motor is fixedly connected to the driving roller. The conveyor frame is also provided with multiple auxiliary rollers, which are located between the driving roller and the driven roller. The driving roller, the driven roller and the auxiliary rollers are connected by a chain drive.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The flange neck conveying mechanism, flange plate conveying mechanism and rotary clamping assembly equipped in this invention can simultaneously complete the loading operation of two parts to be welded (flange neck and flange plate), which is highly efficient and low in cost; it can adaptively adjust the centering clamping according to different flange specifications, which is highly versatile and can adapt to the welding processing needs of various flange models, thus solving the problem of poor adaptability of traditional equipment. 2. The centering and ejection assembly of this invention is equipped with a centering positioning function. When the part to be welded is ejected, it automatically centers and aligns, achieving high-precision positioning, which facilitates the transfer and clamping of the part to be welded and effectively improves the positioning accuracy of the part to be welded. 3. The welding platform equipped with this invention has an adjustable operating table angle, which, together with the degree of freedom adjustment component of the welding mechanism, can realize small-angle adjustment of the welding platform up and down, and precise multi-dimensional adjustment of the welding gun body up and down, left and right, and forward and backward. It can accurately align with the flange weld position, and with uniform rotation, achieve uniform and continuous welding of the circumferential weld, realize wave welding, effectively avoid welding defects such as false welding, missed welding, weld beads, and uneven weld, greatly improve the flange welding forming quality, and reduce the product defect rate. 4. The chuck and clamping mechanism equipped in this invention work together to ensure that the flange and flange neck can rotate freely along the axial direction, avoid stress caused by rotation during the welding process, and avoid welding misalignment. At the same time, mechanical limiting ensures high coaxiality accuracy of the flange and flange neck after welding. 5. This invention is equipped with a discharge conveying mechanism and an insulation box. The discharge conveying mechanism can realize the automatic conveying and unloading of the finished flange after welding. The insulation box is designed to slowly cool the finished flange after welding, so as to avoid cracks caused by a sudden drop in temperature of the flange (especially carbon steel flange) after welding in winter when the workshop is too cold. In winter or before welding thick-walled parts, preheating is carried out by a preheating coil to avoid cracks caused by excessive temperature difference during welding. 6. This invention adopts an integrated electronic control system, eliminating the need for manual operation of the welding torch, effectively reducing labor intensity, simplifying the welding process, and significantly improving flange welding efficiency. It can meet the needs of large-scale, standardized, and high-precision industrial production of flanges, effectively reducing enterprise production costs, and is more practical and economical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the welding equipment for flange production shown in this invention; Figure 2 This is a schematic diagram of the feeding and clamping mechanism shown in the present invention; Figure 3 This is a schematic diagram of the structure of the rotary clamping assembly shown in this invention; Figure 4 This is a schematic diagram of the structure of the feeding and conveying assembly shown in this invention; Figure 5 This is a perspective view of the centering and ejection assembly shown in this invention; Figure 6 This is a front view of the centering and ejection component shown in this invention; Figure 7 This is a perspective view of the welding platform shown in this invention; Figure 8 This is a front view of the welding platform shown in this invention; Figure 9 This is a schematic diagram showing the connection of the base, transmission screw, and stepper motor according to the present invention. Figure 10 This is a schematic diagram of the pressing mechanism shown in this invention; Figure 11 As shown in the invention Figure 10 Enlarged structural diagram of section A in the middle; Figure 12 This is a schematic diagram of the structure of the degree-of-freedom adjustment component shown in this invention; Figure 13 This is a schematic diagram showing the connection of the welding torch, welding frame, and preheating coil as illustrated in this invention. Figure 14 This is a schematic diagram of the material discharge conveying mechanism shown in this invention; The numbers on the map are: 1. Welding mechanism; 11. Welding platform; 12. Welding torch; 13. Degree of freedom adjustment assembly; 14. Clamping mechanism; 15. Welding frame; 110. Transmission screw; 111. Base; 112. Operating table; 113. Chuck; 114. Rotary motor; 115. Support frame; 116. Stepper motor; 117. Transmission assembly; 131. Third fixed frame; 132. Fourth guide rail; 133. Fourth electric cylinder; 134. Third slider; 135. Fifth guide rail; 136. Fifth electric cylinder; 137. Fourth slider; 138. Sixth guide rail; 139. Sixth electric cylinder; 141. Rotating sleeve; 142. Rotating rod; 143. Electric push rod; 144. Connecting plate; 145. Slide rod; 146. Clamping block; 147. Spring; 148. Limiting ring; 149. Limiting ring; 1411. Arc groove; 1421. Pin; 151. Seventh electric cylinder; 152. First support plate; 153. Support rod; 154. Second support plate; 155. Arc preheating ring; 2. Feeding conveyor mechanism; 21. Flange neck conveyor mechanism; 22. Flange conveyor mechanism; 23. Feeding clamping mechanism; 24. Rotary clamping assembly; 25. 26. Feeding and conveying assembly; 231. Centering and ejection assembly; 232. First fixed frame; 233. First guide rail; 234. First slider; 235. Second guide rail; 236. Second electric cylinder; 237. Second slider; 238. Third guide rail; 239. Third electric cylinder; 241. First clamping and fixing plate; 242. Rotary cylinder; 243. Rotary disk; 244. Second clamping and fixing plate; 245. Flange jaw; 246. Flange neck jaw; 247. L-shaped fixing plate; 251. First conveyor frame; 252. First drive roller; 253. First driven roller; 254. First motor; 255. First auxiliary roller; 256. Position sensor; 260. Top claw; 261. Fixed plate; 262. Ejection cylinder; 263. Lifting platform; 264. Rocker arm; 265. First clamping plate; 266. Second clamping plate; 267. Fixed block; 268. Guide rod; 269. Horizontal push cylinder; 3. Discharge conveying mechanism; 31. Second conveyor frame; 32. Second driving roller; 33. Second driven roller; 34. Second motor; 35. Second auxiliary roller; 36. Insulation box; 4. Ultrasonic detection probe. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1-14As shown, a welding equipment for flange production includes a welding mechanism 1, a feeding conveying mechanism 2, and a discharging conveying mechanism 3. The feeding conveying mechanism 2 includes a flange neck conveying mechanism 21, a flange plate conveying mechanism 22, and a feeding clamping mechanism 23. Both the flange neck conveying mechanism 21 and the flange plate conveying mechanism 22 include a feeding conveying assembly 25 and a centering ejection assembly 26.

[0019] The feeding and clamping mechanism 23 includes a linear slide rail assembly and a rotary clamping assembly 24. The linear slide rail assembly is a three-axis linear module, specifically including a first fixed frame 231. A first guide rail 232 (X-axis guide rail) is fixedly connected to the top of the first fixed frame 231. A first electric cylinder 233 (X-axis electric cylinder) is fixedly connected to one end of the first guide rail 232. A first slider 234 (X-axis slider) is fixedly connected to the output end of the first electric cylinder 233. The first slider 234 is slidably connected to the first guide rail 232. A second guide rail 235 (Y-axis) is fixedly connected to the top of the first slider 234. The guide rail 235 has a second electric cylinder 236 (Y-axis electric cylinder) fixedly connected to one end of the second guide rail 235. The output end of the second electric cylinder 236 is fixedly connected to the second slider 237 (Y-axis slider). The second slider 237 is slidably connected to the second guide rail 235. A third guide rail 238 (Z-axis guide rail) is fixedly connected to one side of the second slider 237. A third electric cylinder 239 (Z-axis electric cylinder) is fixedly connected to the top end of the third guide rail 238. The output end of the third electric cylinder 239 is fixedly connected to the rotary clamping assembly 24. The rotary clamping assembly 24 is slidably connected to the third guide rail 238.

[0020] The rotary clamping assembly 24 includes a first clamping fixing plate 241, which is slidably connected to a third slide rail 238. A rotary cylinder 242 is fixedly connected to the bottom of the first clamping fixing plate 241, and a rotary disk 243 is fixedly connected to the output end of the rotary cylinder 242. A second clamping fixing plate 244 is fixedly connected to the bottom of the rotary disk 243. Flange jaws 245 and flange neck jaws 246 are respectively provided at both ends of the second clamping fixing plate 244. The flange jaws 245 and flange neck jaws 246 are arranged perpendicularly to each other. The flange neck clamp 246 can be either pneumatic or electric. The flange clamp 245 and flange neck clamp 246 can be set according to the shape and curvature of the flange and flange neck, respectively, so as to better match the flange and flange neck to be welded and improve the clamping stability. The first clamping fixing plate 241 is provided with an L-shaped fixing plate 247. One end of the L-shaped fixing plate 247 is provided with an ultrasonic testing probe 4. The ultrasonic testing probe 4 can be used to detect whether the flange and flange neck are properly connected, and whether there are welding defects such as incomplete welding, missing welding, and weld beads during the inspection process, so as to further ensure the quality of the finished product after welding.

[0021] The feeding and conveying assembly 25 includes a first conveying frame 251. A first driving roller 252 and a first driven roller 253 are rotatably mounted at both ends of the first conveying frame 251. A first motor 254 is mounted on one side wall of the first conveying frame 251. The output shaft of the first motor 254 is fixedly connected to the first driving roller 252. The first conveying frame 251 also rotatably mounts a plurality of first auxiliary rollers 255, which are located between the first driving roller 252 and the first driven roller 253. The roller 253 and the first auxiliary roller 255 are connected by a chain drive. That is, both ends of the first driving roller 252, the first driven roller 253 and the first auxiliary roller 255 are fixedly connected to sprockets. Each sprocket is meshed with a chain. The first motor 254 drives the first driving roller 252 to rotate. Through the cooperation of the sprockets and the chain, the first driven roller 253 and multiple first auxiliary rollers 255 are driven to rotate. This allows the flange or flange neck on the feeding conveying assembly 25 to be transported to the designated position, which is convenient for the rotating clamping assembly 24 to clamp and feed the material.

[0022] The ejection assembly 26 includes a fixed plate 261, an ejection cylinder 262, a lifting platform 263, a rocker arm 264, a first clamping plate 265, and a second clamping plate 266. The fixed plate 261 is fixedly connected to the bottom of the first conveyor frame 251. The ejection cylinder 262 is fixedly connected to the bottom of the fixed plate 261. The output end of the ejection cylinder 262 passes through the fixed plate 261 and is fixedly connected to the lifting platform 263. The output end of the ejection cylinder 262 is slidably connected to the fixed plate 261. A fixed block 267 is fixedly installed in the middle of the top of the lifting platform 263. Two guide rods 268 are symmetrically fixedly connected through the upper middle part of the fixed block 267. The first clamping plate 265 and the second clamping plate 266 are both slidably connected to the two guide rods 268. The first clamping plate 265 and the second clamping plate 266 are respectively located at... On both sides of the fixed block 267, rocker arms 264 are rotatably connected to the top middle of the fixed block 267. The two ends of the rocker arms 264 are respectively hinged to a first connecting rod and a second connecting rod. The other end of the first connecting rod is hinged to the first clamping plate 265, and the other end of the second connecting rod is hinged to the second clamping plate 266. A flat-push cylinder 269 is fixedly connected to the lower side wall of the fixed block 267. The output end of the flat-push cylinder 269 passes through the fixed block 267 and is fixedly connected to the lower part of the first clamping plate 265. The output end of the flat-push cylinder 269 is slidably connected to the fixed block 267. The top ends of the first clamping plate 265 and the second clamping plate 266 are provided with top claws 260. There is a gap between two adjacent first auxiliary rollers 255. The top claws 260 are located below the gap. A position sensor 256 is provided on the first conveyor frame 251. When the position sensor 256 detects that the part to be welded (flange or flange neck) is in place, the flat push cylinder 269 pushes the first clamping plate 265 to the right. Under the synchronous action of the rocker arm 264 and the first and second connecting rods on both sides, the second clamping plate 266 moves to the left, positioning the part to be welded in the center. The ejection cylinder 262 pushes the lifting platform 263 to move upward, ejecting the part to be welded, which facilitates the transfer of the rotating clamping assembly 24.

[0023] The welding mechanism 1 includes a welding platform 11, a welding torch 12, and a degree-of-freedom adjustment assembly 13.

[0024] The welding platform 11 includes a base 111 and an operating table 112. A chuck 113 is rotatably mounted on the operating table 112. The chuck 113 is preferably a three-jaw electric chuck. A rotary motor 114 and a support frame 115 are fixedly connected to the bottom of the base 111. A coupling is connected to the output end of the rotary motor 114. The coupling is fixedly connected to the chuck 113. A transmission screw 110 is fixedly connected inside the operating table 112. Both ends of the transmission screw 110 pass through both ends of the operating table 112 and are rotatably connected to both ends of the base 111, respectively. A stepper motor 116 is fixedly connected to the inner wall of one side of the base 111. A reducer is connected to the output end of the stepper motor 116 through a coupling. A transmission assembly 117 is connected to the output end of the reducer. The transmission assembly 117 includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley is fixedly connected to the output end of the reducer. The driven pulley is fixedly connected to one end of the transmission screw 110. The transmission belt is sleeved on the driving pulley and the driven pulley. The stepper motor 116, transmission assembly 117 and transmission screw 110 can be used to adjust the operating table 112 up and down by a small angle, so that the welding torch 12 can be accurately aligned with the flange weld position.

[0025] A clamping mechanism 14 is provided on one side of the chuck 113. The clamping mechanism 14 includes a rotating sleeve 141 and a rotating rod 142. The rotating sleeve 141 is fixedly connected to the operating table 112. An electric push rod 143 is fixedly connected to the support frame 115. The rotating rod 142 is rotatably disposed inside the rotating sleeve 141. The bottom of the rotating rod 142 is fixedly connected to the output end of the electric push rod 143. A pin 1421 is fixedly connected to the rotating rod 142. An arc-shaped groove 1411 is provided on the rotating sleeve 141. The pin 1421 is slidably connected to the arc-shaped groove 1411. The rotating rod 142... A connecting plate 144 is fixedly connected to the top of the connecting plate 144. A sliding rod 145 is slidably connected to the end of the connecting plate 144 away from the rotating rod 142. A pressing block 146 is fixedly connected to the bottom end of the sliding rod 145. A spring 147 is sleeved on the sliding rod 145. The two ends of the spring 147 abut against the top of the pressing block 146 and the bottom of the connecting plate 144, respectively. A limiting ring 148 is provided at the top of the sliding rod 145. A limiting ring 149 is fixedly connected to the top of the end of the connecting plate 144 away from the rotating rod 142. The outer diameter of the limiting ring 148 is larger than the inner diameter of the limiting ring 149. The electric push rod 143 can drive the rotating rod 142 to move up and down. During the up and down movement of the rotating rod 142, since the pin 1421 is restricted in the arc groove 1411 of the rotating sleeve 141, the rotating rod 142 rotates relative to the rotating sleeve 141 within a certain range, thereby driving the clamping block 146 to rotate, which facilitates the feeding or clamping of the flange neck. The spring 147 can play a certain buffering role to avoid damage to the flange neck when the clamping block 146 applies pressure to the flange neck.

[0026] The degree-of-freedom adjustment component 13 is a three-axis linear module, specifically including a third fixed frame 131. A fourth guide rail 132 (X-axis guide rail) is fixedly connected to the top of the third fixed frame 131. A fourth electric cylinder 133 (X-axis electric cylinder) is fixedly connected to one end of the fourth guide rail 132. A third slider 134 (X-axis slider) is fixedly connected to the output end of the fourth electric cylinder 133. The third slider 134 is slidably connected to the fourth guide rail 132. A fifth guide rail 135 (Y-axis guide rail) is fixedly connected to the top of the third slider 134. A fifth electric cylinder 136 is fixedly connected to one end of the fifth guide rail 135. (Y-axis electric cylinder), the output end of the fifth electric cylinder 136 is fixedly connected to the fourth slider 137 (Y-axis slider), the fourth slider 137 is slidably connected to the fifth guide rail 135, the side of the fourth slider 137 is fixedly connected to the sixth guide rail 138 (Z-axis guide rail), the top of the sixth guide rail 138 is fixedly connected to the sixth electric cylinder 139 (Z-axis electric cylinder), the output end of the sixth electric cylinder 139 is fixedly connected to the fifth slider (Z-axis slider), the fifth slider is slidably connected to the sixth guide rail 138, the welding frame 15 is fixedly connected to the fifth slider, and the welding torch 12 is fixedly connected to the welding frame 15. Through the three-axis degree of freedom adjustment of the fourth guide rail 132, the fifth guide rail 135 and the sixth guide rail 138, the welding torch 12 can be precisely adjusted in multiple dimensions (up and down, left and right, forward and backward). With the uniform rotation of the chuck 113, uniform and continuous welding of the annular weld can be achieved, realizing wave welding, effectively avoiding welding defects such as incomplete welding, missed welding, weld beads, and uneven weld, greatly improving the welding forming quality of the flange and reducing the product defect rate.

[0027] A seventh electric cylinder 151 is fixedly connected to the welding frame 15. The output shaft of the seventh electric cylinder 151 is fixedly connected to a first support plate 152. The output shaft of the seventh electric cylinder 151 is slidably connected to the welding frame 15. Support rods 153 are symmetrically fixedly connected to the side of the first support plate 152 away from the seventh electric cylinder 151. A second support plate 154 is fixedly connected to the end of the two support rods 153 away from the first support plate 152. An arc-shaped preheating ring 155 is fixedly connected to the side of the second support plate 154 away from the support rods 153. In winter or when the temperature is low, the flange and flange neck joint can be preheated by the arc-shaped preheating ring 155 before welding to avoid cracks during welding due to excessive temperature difference.

[0028] The discharge conveying mechanism 3 is located on one side of the welding platform 11. The discharge conveying mechanism 3 includes a discharge conveying component and an insulation box 36. The discharge conveying component is partially located inside the insulation box 36. The discharge conveying component includes a second conveying frame 31. A second driving roller 32 and a second driven roller 33 are rotatably mounted at both ends of the second conveying frame 31. A second motor 34 is mounted on one side wall of the second conveying frame 31. The output shaft of the second motor 34 is fixedly connected to the second driving roller 32. The second conveying frame 31 also rotatably mounts multiple second auxiliary rollers 35. The second driving roller 32, the second driven roller 33, and the second auxiliary rollers 35 are connected by a chain drive. Both ends of the 3rd and second auxiliary rollers 35 are fixedly connected to sprockets, and each sprocket is meshed with a chain. The discharge conveying mechanism 3 is equipped with an insulation box 36, and the insulation box 36 is equipped with an air duct. The rotating clamping assembly 24 clamps the finished flange welded on the welding platform onto the second conveying frame 31. The second motor 34 drives the second active roller 32 to rotate, and through the cooperation of the sprocket and the chain, drives the second driven roller 33 and multiple second auxiliary rollers 35 to rotate, so as to facilitate the delivery of the welded finished flange into the insulation box 36. The temperature of the air duct in the insulation box 36 is adjustable, so that the air blown out of the air duct slowly cools the welded finished flange, avoiding the flange from cracking due to a sudden drop in temperature.

[0029] The working process of the device of the present invention is as follows: The flange is placed on the flange conveying mechanism 21. When the position sensor detects that the flange has been conveyed to the designated position, the horizontal thrust cylinder 269 is activated. The horizontal thrust cylinder 269 pushes the first clamping plate 265 to the right. Under the synchronous action of the rocker arm 264 and the first and second connecting rods on both sides, the second clamping plate 266 moves to the left, clamping the flange and centering it. The ejection cylinder 262 is activated, pushing the lifting platform 263 upward to eject the flange. The first electric cylinder 233, the second electric cylinder 236, and the third electric cylinder 267 then move upward. Electric cylinder 239 operates in sequence, causing the rotary clamping assembly 24 to move to the position of the flange. The rotary cylinder 242 is activated, causing the flange clamp 245 to rotate to the flange position. The flange clamp 245 operates to grab the flange. The first electric cylinder 233, the second electric cylinder 236, and the third electric cylinder 239 operate again, causing the flange clamp 245 to move the flange above the chuck 113. The flange clamp 245 operates again, placing the flange in the chuck 114. The jaws of the chuck 113 fix the flange. The flange neck is placed on the flange neck conveying mechanism 21. When the position sensor 256 detects that the flange neck has been conveyed to the designated position, the horizontal thrust cylinder 269 is activated. The horizontal thrust cylinder 269 pushes the first clamping plate 265 to the right. Under the synchronous action of the rocker arm 264 and the first and second connecting rods on both sides, the second clamping plate 266 moves to the left, clamping the flange neck and centering it. The ejection cylinder 262 is activated, pushing the lifting platform 263 upward to eject the flange neck. The first electric cylinder 23... 3. The second electric cylinder 236 and the third electric cylinder 239 act in succession, causing the rotary clamping assembly 24 to move to the position of the flange neck. The rotary cylinder 242 is activated, causing the flange neck gripper 246 to rotate to the position of the flange neck. The flange neck gripper 246 acts to grab the flange neck. The first electric cylinder 233, the second electric cylinder 236 and the third electric cylinder 239 act again, causing the flange neck gripper 246 to move the flange neck to above the flange. The flange neck gripper 246 acts again to align the flange neck with the flange. The electric push rod 143 is activated, and its telescopic rod drives the rotating rod 142 to move downward. At the same time, the rotating rod 142 rotates within the rotating sleeve 141, causing the clamping block 146 to clamp the flange neck. The fourth electric cylinder 133, the fifth electric cylinder 136, and the sixth electric cylinder 139 are activated in sequence, driving the welding torch 12 to align with the flange and flange neck. The rotary motor 114 is activated, and the rotary motor 114 drives the chuck 113 to rotate, so that the welding torch 12 can continuously weld the weld. During the welding process, the sixth electric cylinder 139 can drive the welding torch 12 to move up and down within a small range, thereby achieving wave welding and further improving the welding quality. During the welding process, the stepper motor 116 can also be activated as needed, so that the stepper motor 116 drives the transmission screw 110 to rotate. The transmission screw 110 drives the operating table 112 to adjust up and down by a small angle, so that the welding torch 12 can accurately align with the weld position for welding. After welding is completed, the telescopic rod of the electric push rod 143 extends, driving the rotating rod 142 to move upward. At the same time, the rotating rod 142 rotates inside the rotating sleeve, driving the clamping block 146 away from the flange neck, releasing the pressure on the flange neck. The first electric cylinder 233, the second electric cylinder 236 and the third electric cylinder 239 are activated, causing the flange neck gripper 246 to move above the welded finished flange. The flange neck gripper 246 is activated, grabbing the finished flange and placing it on the second conveyor frame 31. The second motor 34 drives the second active roller 32, the second driven roller 33 and the second auxiliary roller 35 to rotate, conveying the finished flange into the insulation box 36 for slow cooling. After slow cooling, it continues to be conveyed to the designated position.

[0030] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for flange production, comprising a welding platform and a welding torch, characterized in that, The welding torch is mounted on the degree-of-freedom adjustment assembly; the welding platform includes a base and an operating table rotatably connected to the base, a chuck is rotatably mounted on the operating table, a rotary motor is fixedly connected to the inner bottom wall of the base, the output end of the rotary motor is fixedly connected to the chuck, a clamping mechanism is provided on one side of the chuck, a transmission screw is fixedly connected inside the operating table, the two ends of the transmission screw are rotatably connected to the two ends of the base respectively, a stepper motor is fixedly connected to the inner wall of one side of the base, the output end of the stepper motor is connected to a transmission assembly, and the transmission assembly is drivenly connected to one end of the transmission screw.

2. The welding equipment for flange production according to claim 1, characterized in that, The clamping mechanism includes a rotating sleeve fixedly connected to the operating table, a support frame fixedly connected to the bottom of the operating table, an electric push rod fixedly connected to the support frame, a rotating rod rotatably disposed inside the rotating sleeve, the bottom of the rotating rod being fixedly connected to the output end of the electric push rod, a pin being provided on the rotating rod, an arc groove being provided on the rotating sleeve, the pin being slidably connected to the arc groove, a connecting plate being fixedly connected to the top end of the rotating rod, and a clamping block being connected to the end of the connecting plate away from the rotating rod.

3. The welding equipment for flange production according to claim 2, characterized in that, A sliding rod is fixedly connected to the top of the clamping block. The sliding rod passes through the connecting plate and is slidably connected to the connecting plate. A spring is sleeved on the sliding rod. The two ends of the spring abut against the top of the clamping block and the bottom of the connecting plate, respectively. A limiting ring is provided at the top of the sliding rod. A limiting ring is fixedly connected to the top of the end of the connecting plate away from the rotating rod. The outer diameter of the limiting ring is larger than the inner diameter of the limiting ring.

4. The welding equipment for flange production according to any one of claims 1-3, characterized in that, It also includes a feeding and conveying mechanism, which includes a flange neck conveying mechanism, a flange conveying mechanism, and a feeding clamping mechanism. The flange neck conveying mechanism and the flange conveying mechanism each include a feeding and conveying assembly and a centering and ejection assembly. The feeding clamping mechanism includes a linear slide rail assembly and a rotary clamping assembly, and the rotary clamping assembly is slidably connected to the linear slide rail assembly.

5. The welding equipment for flange production according to claim 4, characterized in that, The centering ejection assembly includes a fixed plate fixedly connected to the conveying assembly. An ejection cylinder is fixedly connected to the bottom of the fixed plate. The output end of the ejection cylinder passes through the fixed plate and is fixedly connected to a lifting platform. A fixed block is fixedly installed at the top center of the lifting platform. A rocker arm is rotatably connected to the top center of the fixed block. A first clamping plate and a second clamping plate are respectively hinged to both ends of the rocker arm. A horizontal push cylinder is fixedly connected to the lower side wall of the fixed block. The output end of the horizontal push cylinder passes through the fixed block and is fixedly connected to the lower part of the first clamping plate. Both ends of the top of the first clamping plate and the second clamping plate are provided with ejector claws. A position sensor is provided on the conveying assembly.

6. The welding equipment for flange production according to claim 4, characterized in that, The rotary clamping assembly includes a first clamping fixing plate slidably connected to the linear slide rail assembly. A rotary cylinder is fixedly connected to the bottom of the first clamping fixing plate. A rotary disk is fixedly connected to the output end of the rotary cylinder. A second clamping fixing plate is fixedly connected to the bottom of the rotary disk. Flange jaws and flange neck jaws are respectively provided at both ends of the second clamping fixing plate. The flange jaws and flange neck jaws are arranged perpendicular to each other. An L-shaped fixing plate is provided on the first clamping fixing plate. An ultrasonic testing probe is provided at one end of the L-shaped fixing plate.

7. The welding equipment for flange production according to claim 4, characterized in that, Both the linear guide rail assembly and the degree-of-freedom adjustment assembly are three-axis linear modules. The three-axis linear module includes an X-axis guide rail, a Y-axis guide rail, and a Z-axis guide rail. An X-axis electric cylinder, a Y-axis electric cylinder, and a Z-axis electric cylinder are respectively fixedly connected to one end of the X-axis guide rail, the X-axis electric cylinder is fixedly connected to an X-axis slider that is slidably connected to the X-axis guide rail, the Y-axis guide rail is fixedly connected to the X-axis slider, the Y-axis electric cylinder is fixedly connected to a Y-axis slider that is slidably connected to the Y-axis guide rail, the Z-axis guide rail is fixedly connected to the Y-axis slider, and a Z-axis electric cylinder is fixedly connected to the top end of the Z-axis guide rail. The Z-axis electric cylinder is fixedly connected to a Z-axis slider that is slidably connected to the Z-axis guide rail.

8. The welding equipment for flange production according to claim 7, characterized in that, A welding frame is slidably connected to the Z-axis guide rail of the degree-of-freedom adjustment component. The welding torch is fixedly connected to the welding frame. A seventh electric cylinder is fixedly connected to the welding frame. A first support plate is fixedly connected to the output shaft of the seventh electric cylinder. The output shaft of the seventh electric cylinder is slidably connected to the welding frame. Support rods are symmetrically fixedly connected to the side of the first support plate away from the seventh electric cylinder. A second support plate is fixedly connected to the end of the two support rods away from the first support plate. An arc-shaped preheating ring is fixedly connected to the side of the second support plate away from the support rods.

9. The welding equipment for flange production according to claim 4, characterized in that, The material discharge conveying mechanism is located on one side of the welding platform. The material discharge conveying mechanism includes a material discharge conveying component and an insulation box. The material discharge conveying component is located inside the insulation box, and the inner wall of the insulation box is provided with an air duct.

10. The welding equipment for flange production according to claim 9, characterized in that, Both the feeding conveyor assembly and the discharging conveyor assembly include a conveyor frame. The two ends of the conveyor frame are respectively provided with a driving roller and a driven roller. A servo motor is provided on one side wall of the conveyor frame. The output shaft of the servo motor is fixedly connected to the driving roller. The conveyor frame is also provided with multiple auxiliary rollers. The multiple auxiliary rollers are located between the driving roller and the driven roller. The driving roller, the driven roller and the auxiliary rollers are connected by a chain drive.

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