Automatic welding equipment and welding method for transformer bellows

Abstract

The present invention relates to an automatic welding device for transformer bellows and a welding method thereof. The automatic welding device for transformer bellows comprises a mounting frame, the mounting frame comprises a workbench, a placement frame for placing the bellows is mounted on the top surface of the workbench, two pushing claws for clamping the bellows are provided on the mounting frame, a movable plate is mounted on the mounting frame for sliding in the horizontal direction, a rotating plate is mounted on the movable plate near the side of the placement frame, a plurality of clamping claws for clamping the flange are provided on the top surface of the rotating plate, a rotating member for driving the rotating plate to rotate downward is provided on the movable plate, the flange on the rotating plate can be coaxially abutted with the bellows on the placement frame, and a welding assembly for welding the bellows and the flange is provided on the mounting frame; the automatic welding device for transformer bellows ensures that the flange and the bellows are accurately butted against each other, has high welding efficiency, and ensures the stability and consistency of welding quality.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to automatic welding equipment for transformer bellows and a welding method thereof. Background Art

[0002] In modern transformer production, bellows are a crucial component, often used to seal the transformer's oil tank and regulate pressure. Because transformers experience temperature fluctuations and pressure fluctuations during operation, the quality and sealing properties of the bellows are crucial to their stable operation. Flanges are often used to connect the bellows to other transformer components, so the quality of the weld between the bellows and flange directly impacts the transformer's sealing performance and overall reliability.

[0003] When welding a bellows to a flange, the two must be properly butted together, and the correct position of the bellows must be ensured. Traditionally, due to a lack of automation and precise positioning tools, this often results in misalignment between the bellows and flange, leading to poor welding results. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic welding device for transformer bellows with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A kind of automatic welding equipment for bellows for transformers, including a mounting frame, the mounting frame including a workbench, a placement frame for placing the bellows installed on the top surface of the workbench, two pushing claws for clamping the bellows are provided on the mounting frame, a movable plate is installed on the mounting frame for sliding in the horizontal direction, a rotating plate is installed on the movable plate close to the side of the placement frame, a plurality of clamping claws for clamping the flange are provided on the top surface of the rotating plate, a rotating part for driving the rotating plate to rotate downward is provided on the movable plate, the flange on the rotating plate can be coaxially abutted with the bellows on the placement frame, and a welding assembly for welding the bellows and the flange is provided on the mounting frame.

[0007] As a further optimization scheme of the present invention, the welding assembly includes a circular ring fixed on the mounting frame, a guide rail is provided on the inner circumferential surface of the circular ring, a sliding block is installed on the guide rail for sliding along the circumference of the circular ring, a motor 2 is fixed on the side of the sliding block, a gear is coaxially fixed to the output end of the motor 2, a gear ring is fixed on the side of the circular ring, the gear and the gear ring are engaged with each other, and a welding gun is installed on the side of the sliding block away from the gear ring.

[0008] As a further optimization scheme of the present invention, the two pushing claws are respectively located on the upper and lower sides of the bellows, and the opposite inner sides of the two pushing claws are provided with arc-shaped grooves, and the arc-shaped grooves can fit with the outer circumferential surface of the bellows, and two pushing rods are installed on the mounting frame for vertical sliding, and the pushing rods correspond to the pushing claws one by one, and a connecting block is provided between the pushing rods and the corresponding pushing claws, and a long rod 1 and a short rod 1 are fixed to the side of the pushing rod close to the connecting block, a connecting rod 1 is hinged between the long rod 1 and the connecting block, and a connecting rod 2 is hinged between the short rod 1 and the connecting block, the length of the connecting rod 1 is the same as the length of the connecting rod 2, and the connecting rod 1 and the connecting rod 2 are parallel to each other;

[0009] A long rod 2 and a short rod 2 are fixed to the side of the pushing claw away from the bellows, a connecting rod 3 is hinged between the short rod 2 and the connecting block, a connecting rod 4 is hinged between the long rod 2 and the connecting block, the length of the connecting rod 3 is the same as the length of the connecting rod 4, the connecting rod 3 and the connecting rod 4 are parallel to each other, the end of the connecting rod 1 away from the long rod 1 is hinged to the end of the connecting rod 3 away from the short rod 2, the bottom of the pushing rod is hinged with a cylinder 1, the piston rod end of the cylinder 1 is fixed with a pushing block, a fixing column is installed on the side of the connecting rod 2, the pushing block is sleeved on the outer periphery of the fixing column, and the pushing block is rotatably connected to the fixing column;

[0010] Two cylinders 2 are fixed on the mounting frame, and a push plate is fixed to the end of the piston rod of the cylinder 2. The push plate corresponds to the push rod one by one, and the push plate is fixedly connected to the corresponding push rod end close to the side of the bellows. Two vertically arranged guide rods are fixed on the mounting frame, and the push plate is sleeved on the outer circumference of the guide rod.

[0011] As a further optimization scheme of the present invention, a mounting cylinder for placing flanges is fixed on the mounting frame, and several flanges are stacked vertically in sequence in the mounting cylinder. The bottom surface of the mounting cylinder is in contact with the top surface of the movable plate. The bottom surface of the mounting cylinder is provided with a makeshift groove for the flanges to pass through. The bottom surface of the mounting cylinder is provided with several mounting grooves, and the clamping claw can move in the mounting groove. An elastic block is fixed to the bottom of the mounting cylinder, and the elastic block is located on the side of the mounting cylinder close to the placement frame.

[0012] As a further optimization scheme of the present invention, the top surface of the rotating plate is provided with an accommodating groove for accommodating the clamping claw, and the clamping claw includes an elastic strip hinged to the bottom surface of the rotating plate and a clamping block fixed to the end of the elastic strip, and the clamping block is fixed with a rubber sheet on the side of the clamping block close to the flange; the bottom surface of the rotating plate is fixed with cylinder three, and the bottom end of the piston rod of cylinder three is fixed with a driving plate, and the top surface of the driving plate is fixed with several driving blocks, and several driving blocks are arranged at equal intervals along the circumference of the driving plate, and the top end of the driving block is hinged with a driving rod, and the driving rod corresponds to the elastic strip one by one, and the top end of the driving rod is hinged to the corresponding elastic strip.

[0013] As a further optimization scheme of the present invention, two connecting plates are fixed to the bottom surface of the movable plate, and the rotating part includes a cylinder four hinged between the two connecting plates, and a hinge block one is fixed to the end of the piston rod of the cylinder four, and a hinge block two is fixed to the bottom surface of the rotating plate, and a hinge rod is passed through the side surface of the hinge block two, and the hinge block is set on the outer periphery of the hinge rod, and the hinge block one is rotatably connected to the hinge rod.

[0014] As a further optimization scheme of the present invention, the mounting frame includes a vertically arranged mounting plate, a sliding groove is opened on the side of the mounting plate, and a slider is installed on the mounting plate through the sliding groove for sliding in the horizontal direction. The slider is fixedly connected to the side of the movable plate, and a screw is rotatably installed in the sliding groove. The slider is sleeved on the outer periphery of the screw, and the slider is engaged with the screw thread transmission. Motor 1 is fixed on the side of the mounting plate, and the output end of motor 1 is coaxially fixedly connected to the screw.

[0015] As a further optimization scheme of the present invention, the placement rack includes two horizontally arranged placement rods, and vertically arranged support rods are fixed at both ends of the placement rods. The bottom ends of the support rods are fixedly connected to the top surface of the workbench, and the placement rods can abut against the outer peripheral surface of the corrugated tube.

[0016] As a further optimization scheme of the present invention, the mounting frame includes a base, and two unloading rods are installed on the top surface of the base. Vertical rods are respectively fixed at both ends of the unloading rods, and the bottom ends of the vertical rods are fixedly connected to the base. The unloading rods include an inclined tilting rod and a horizontally arranged buffer rod. The inclined rod is located directly below the rotating plate, and the inclined rod is tilted upward at one end away from the buffer rod.

[0017] A method for welding a transformer bellows comprises the following steps:

[0018] S1. Place the bellows between the two placement rods, start cylinder 2, and the push plate drives the push rod to move toward the direction close to the bellows, so that the push claw contacts the bellows;

[0019] S2, start cylinder 3, which drives the driving plate to move upward, so that the clamping block fits tightly against the outer periphery of the flange;

[0020] S3. Start motor 1, and the movable plate moves toward the direction close to the bellows, so that the bottom of the mounting cylinder is in contact with the top surface of the movable plate. Start cylinder 4, and the rotating plate rotates downward. The flange and the bellows are coaxially arranged. Start motor 1 again, so that the flange and the bellows are coaxially abutted. Start cylinder 1, and the pushing claw drives the bellows toward the direction close to the ring, so that the bellows and the flange are in close contact.

[0021] S4. Start motor 2, which drives the gear to rotate. The gear moves along the circumference of the ring through the gear ring, causing the sliding block to move on the guide rail and drive the welding gun to weld along the seam between the bellows and the flange.

[0022] The beneficial effects of the present invention are: placing the bellows on the placement rack, pushing the claws to clamp and limit the bellows, placing the flange on the rotating plate, clamping the clamping claws to clamp and limit the flange, and then rotating the rotating plate downward so that the flange and the bellows are coaxially arranged, and then moving the movable plate toward the direction close to the bellows so that the flange and the bellows are coaxially abutted, so that the docking position of the flange and the bellows is accurate, and the bellows is welded using a welding assembly, the welding efficiency is high, and the flange and the bellows are not easily misaligned, ensuring the stability and consistency of the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the bellows and flange abutment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the welding assembly of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the push rod and the push claw of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the mounting cylinder and the rotating plate of the present invention;

[0028] Figure 6 It is a cross-sectional view of the cleaning rotating plate of the present invention.

[0029] In the figure: 1. Mounting frame; 11. Workbench; 12. Placement frame; 121. Placement rod; 122. Support rod; 13. Mounting plate; 131. Slide; 14. Base; 15. Unloading rod; 151. Tilt rod; 152. Buffer rod; 153. Vertical rod; 2. Push plate; 21. Guide rod; 22. Push rod; 221. Long rod 1; 222. Short rod 1; 223. Connecting rod 1; 224. Connecting rod 2; 225. Fixed column; 23. Connecting block; 24. Push claw; 241. Long rod 2; 242. Short rod 2; 243. Connecting rod 3; 244. Connecting rod 4; 245. Arc groove; 25. Cylinder 1; 251. Push block; 26. Cylinder two; 3. Rotating plate; 31. Accommodating groove; 32. Clamping claw; 321. Elastic strip; 322. Clamping block; 323. Rubber sheet; 33. Cylinder three; 34. Driving plate; 35. Driving block; 36. Driving rod; 4. Moving plate; 41. Slider; 42. Lead screw; 43. Motor one; 5. Rotating part; 51. Cylinder four; 52. Connecting plate; 53. Articulated block one; 54. Articulated block two; 55. Articulated rod; 6. Mounting tube; 61. Make way groove; 62. Mounting groove; 63. Elastic block; 7. Welding assembly; 71. Ring; 72. Guide rail; 73. Sliding block; 74. Motor two; 75. Gear; 76. Gear ring; 77. Welding gun. DETAILED DESCRIPTION

[0030] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Reference Figure 1 and Figure 2 The automatic welding equipment for transformer bellows includes a mounting frame 1, which includes a workbench 11. A placement frame 12 for placing the bellows is installed on the top surface of the workbench 11. Two pushing claws 24 for clamping the bellows are provided on the mounting frame 1. A movable plate 4 is slidably installed in the horizontal direction on the mounting frame 1, and a rotating plate 3 is rotatably installed on the side of the movable plate 4 close to the placement frame 12. The top surface of the rotating plate 3 is provided with a plurality of clamping claws 32 for clamping the flange, and the movable plate 4 is provided with a rotating member 5 for driving the rotating plate 3 to rotate downward. The flange on the rotating plate 3 can be coaxially abutted with the bellows on the placement frame 12, and the mounting frame 1 is provided with a welding assembly 7 for welding the bellows and the flange.

[0032] Place the bellows on the placement rack 12, push the claws 24 to clamp and limit the bellows, place the flange on the rotating plate 3, clamp the flange with the clamping claws 32, and then rotate the rotating plate 3 downward so that the flange and the bellows are coaxially arranged, and then move the movable plate 4 toward the direction close to the bellows so that the flange and the bellows are coaxially abutted, so that the docking position of the flange and the bellows is accurate, and use the welding assembly 7 to weld the bellows, the welding efficiency is high, and the flange and the bellows are not easily misaligned, ensuring the stability and consistency of the welding quality.

[0033] Reference Figure 1 The placement rack 12 includes two horizontal placement rods 121, each with a vertical support rod 122 fixed to its ends. The bottom ends of the support rods 122 are fixedly connected to the top surface of the workbench 11. The placement rods 121 can abut against the outer circumference of the corrugated tube. When the corrugated tube is placed between the two placement rods 121, the outer circumference of the corrugated tube abuts against the placement rods 121, keeping the corrugated tube in a horizontal position and providing stable support for subsequent welding operations.

[0034] Reference Figure 1 The mounting frame 1 includes a base 14, and two blanking rods 15 are installed on the top surface of the base 14. Vertical rods 153 are fixed to both ends of the blanking rod 15, and the bottom ends of the vertical rods 153 are fixedly connected to the base 14. The blanking rod 15 includes an inclined tilting rod 151 and a horizontally arranged buffer rod 152. The inclined rod 151 is located directly below the rotating plate 3, and the end of the inclined rod 151 away from the buffer rod 152 is inclined upward. The welded bellows and flange fall on the blanking rod 15, and the bellows and flange move to the buffer rod 152 through the inclined rod 151 under the action of their own gravity.

[0035] Reference Figure 2 and Figure 3 The welding assembly 7 includes a circular ring 71 fixed on the mounting frame 1, and a guide rail 72 is provided on the inner circumference of the circular ring 71. A sliding block 73 is installed on the guide rail 72 to slide along the circumference of the circular ring 71, and a motor 2 74 is fixed to the side of the sliding block 73. A gear 75 is coaxially fixed to the output end of the motor 2 74, and a ring gear 76 is fixed to the side of the circular ring 71. The gear 75 and the ring gear 76 are engaged with each other. A welding gun 77 is installed on the side of the sliding block 73 away from the ring gear 76. When the motor 2 74 is started, the motor 2 74 drives the gear 75 to rotate, and the gear 75 moves along the circumference of the circular ring 71 through the ring gear 76, so that the sliding block 73 rotates on the guide rail 72, so that the welding gun 77 can weld the corrugated pipe.

[0036] Reference Figure 2 and Figure 4Two push claws 24 are located on the upper and lower sides of the bellows, respectively. Arc-shaped grooves 245 are provided on the opposing inner sides of the two push claws 24, which are capable of fitting against the outer circumference of the bellows. Two push rods 22 are vertically slidably mounted on the mounting frame 1. The push rods 22 correspond to the push claws 24 one by one, and a connecting block 23 is provided between the push rods 22 and the corresponding push claws 24.

[0037] Reference Figure 4 A long rod 1 221 and a short rod 1 222 are fixed to the side of the push rod 22 near the connecting block 23. A connecting rod 1 223 is hingedly connected between the long rod 1 221 and the connecting block 23, and a connecting rod 2 224 is hingedly connected between the short rod 1 222 and the connecting block 23. The length of the connecting rod 1 223 is the same as that of the connecting rod 224, and the connecting rods 1 223 and 224 are parallel to each other. A long rod 241 and a short rod 242 are fixed to the side of the push claw 24 away from the bellows. A connecting rod 3 243 is hingedly connected between the short rod 242 and the connecting block 23, and a connecting rod 4 244 is hingedly connected between the long rod 241 and the connecting block 23. The length of the third connecting rod 243 is the same as that of the fourth connecting rod 244. The third connecting rod 243 and the fourth connecting rod 244 are parallel to each other. The end of the first connecting rod 223 away from the long rod 1 221 is hinged to the end of the third connecting rod 243 away from the short rod 242.

[0038] Reference Figure 4 The bottom of the push rod 22 is hingedly connected to a cylinder 1 25, and a push block 251 is fixed to the end of the piston rod of cylinder 1 25. A fixed column 225 is installed on the side of the connecting rod 224, and the push block 251 is mounted on the outer periphery of the fixed column 225. The push block 251 is rotatably connected to the fixed column 225. Two cylinders 26 are fixed to the mounting frame 1, and a push plate 2 is fixed to the end of the piston rod of cylinder 26. The push plates 2 correspond to the push rods 22 one by one, and the side of the push plate 2 near the corrugated pipe is fixedly connected to the corresponding end of the push rod 22. Two vertically arranged guide rods 21 are fixed to the mounting frame 1, and the push plates 2 are mounted on the outer periphery of the guide rods 21.

[0039] Move the bellows on the placement rod 121 between the two pushing claws 24, start cylinder 2 26, and the push plate 2 drives the push rod 22 to move toward the direction close to the bellows, so that the pushing claw 24 is in contact with the bellows, and the arc groove 245 of the pushing claw 24 fits with the outer circumferential surface of the bellows to ensure that the bellows is firmly clamped, and then start cylinder 1 25. Cylinder 1 25 drives connecting rod 2 224 to rotate, and connecting rod 2 224 drives the pushing claw 24 to move toward the direction close to the ring 71 through the connecting block 23 and connecting rod 3 243, so that the bellows can be tightly contacted with the flange.

[0040] Reference Figure 5A mounting tube 6 for receiving flanges is fixed to the mounting frame 1. Several flanges are stacked vertically within the mounting tube 6, with the bottom surface of the mounting tube 6 abutting against the top surface of the movable plate 4. The bottom surface of the mounting tube 6 defines a clearance slot 61 for the flanges to pass through. The bottom surface of the mounting tube 6 also defines several mounting slots 62, within which the clamping claws 32 can move. A resilient block 63 is fixed to the bottom of the mounting tube 6, located on the side of the mounting tube 6 closest to the mounting frame 12.

[0041] The flange in the mounting tube 6 falls on the top surface of the rotating plate 3 under the action of its own gravity. After the clamping claws 32 clamp the flange on the top surface of the rotating plate 3, the movable plate 4 drives the rotating plate 3 to move toward the direction close to the bellows. The flange is separated from the mounting sleeve through the clearance groove 61, and the flange in the mounting tube 6 falls on the top surface of the movable plate 4.

[0042] Reference Figure 6 The top surface of the rotating plate 3 is provided with a receiving slot 31 for accommodating a clamping claw 32. The clamping claw 32 includes an elastic strip 321 hinged to the bottom surface of the rotating plate 3 and a clamping block 322 fixed to the end of the elastic strip 321. A rubber sheet 323 is fixed to the side of the clamping block 322 near the flange. A cylinder 33 is fixed to the bottom surface of the rotating plate 3, and a driving plate 34 is fixed to the bottom end of the piston rod of the cylinder 33. A plurality of driving blocks 35 are fixed to the top surface of the driving plate 34. The plurality of driving blocks 35 are arranged at equal intervals along the circumference of the driving plate 34. A driving rod 36 is hinged to the top end of the driving block 35. The driving rod 36 corresponds to the elastic strip 321 one by one, and the top end of the driving rod 36 is hinged to the corresponding elastic strip 321.

[0043] Start cylinder three 33, which drives the drive plate 34 to move upward. The drive plate 34 drives the elastic strip 321 to move through the drive block 35 and the drive rod 36, so that the clamping block 322 abuts against the outer periphery of the flange, and several clamping blocks 322 clamp the flange.

[0044] Reference Figure 5 Two connecting plates 52 are fixed to the bottom of the movable plate 4. The rotating member 5 includes a cylinder 4 51 hinged between the two connecting plates 52. A hinge block 1 53 is fixed to the end of the piston rod of cylinder 4 51. A hinge block 2 54 is fixed to the bottom of the rotating plate 3. A hinge rod 55 is inserted through the side of hinge block 2 54. Hinge block 1 53 is sleeved around the outer periphery of hinge rod 55 and is rotatably connected to hinge block 1 53. After the clamping block 322 clamps the flange, the cylinder 4 51 is activated, causing its piston rod to retract, thereby driving the rotating plate 3 downward, placing the flange coaxially with the bellows.

[0045] Reference Figure 5 and Figure 6The mounting frame 1 includes a vertically arranged mounting plate 13, and a slide groove 131 is provided on the side of the mounting plate 13. The mounting plate 13 is provided with a slider 41 that slides horizontally through the slide groove 131, and the slider 41 is fixedly connected to the side of the movable plate 4. A lead screw 42 is rotatably installed in the slide groove 131, and the slider 41 is sleeved on the outer periphery of the lead screw 42, and the slider 41 and the lead screw 42 are threadedly matched. A motor 43 is fixed to the side of the mounting plate 13, and the output end of the motor 43 is coaxially fixedly connected to the lead screw 42. When the motor 43 is started, the motor 43 drives the lead screw 42 to rotate, and the lead screw 42 drives the rotating plate 3 to move toward the direction close to the bellows, so that the flange is coaxially abutted with the bellows.

[0046] The implementation principle of the automatic welding equipment for bellows for transformers in the embodiment of the present application is as follows: the bellows is placed on the placement rack 12, the pushing claws 24 are used to clamp and limit the bellows, the flange is placed on the rotating plate 3, the clamping claws 32 are used to clamp and limit the flange, and then the rotating plate 3 is rotated downward so that the flange and the bellows are coaxially arranged, and then the movable plate 4 is moved toward the direction close to the bellows so that the flange and the bellows are coaxially abutted, so that the docking position of the flange and the bellows is accurate, and the bellows is welded using the welding assembly 7, the welding efficiency is high, and the flange and the bellows are not easily misaligned, ensuring the stability and consistency of the welding quality.

[0047] A method for welding a transformer bellows comprises the following steps:

[0048] S1. Place the bellows between the two placement rods 121, ensuring that the outer circumference of the bellows abuts against the placement rods 121 and the bellows remains horizontal. Activate cylinder 26, and the push plate 2 drives the push rod 22 to move toward the bellows, so that the push claw 24 abuts against the bellows, and the arc-shaped groove 245 of the push claw 24 fits tightly against the outer circumference of the bellows, thereby firmly clamping the bellows.

[0049] S2. Start the third cylinder 33, which drives the driving plate 34 to move upward. The driving plate 34 drives the elastic strip 321 to move through the driving block 35 and the driving rod 36, so that the clamping block 322 fits tightly with the outer periphery of the flange, thereby firmly clamping the flange.

[0050] S3, start motor 1 43, motor 1 43 drives screw 42 to rotate, screw 42 drives movable plate 4 to move toward the direction close to bellows through slider 41, so that the bottom of mounting cylinder 6 fits with the top surface of movable plate 4, start cylinder 4 51, the piston rod of cylinder 4 51 contracts, drives rotating plate 3 to rotate downward, so that flange and bellows are coaxially arranged, start motor 1 43 again, so that flange and bellows abut coaxially, ensure that the docking position of flange and bellows is accurate, start cylinder 1 25, cylinder 1 25 drives connecting rod 2 224 to rotate, connecting rod 2 224 drives pushing claw 24 to move toward the direction close to circular ring 71 through connecting block 23 and connecting rod 3 243, so that bellows and flange are tightly abutted;

[0051] S5. Start the second motor 74, which drives the gear 75 to rotate. The gear 75 moves along the circumference of the ring 71 through the ring gear 76, so that the sliding block 73 moves on the guide rail 72 and drives the welding gun 77 to weld along the seam between the bellows and the flange.

[0052] S6. After welding is completed, the movable plate 4 drives the rotating plate 3 and the flange to return to the initial position, and the clamping claw 32 is released. The welded bellows and flange fall on the tilting rod 151, and move to the buffer rod 152 under the action of their own gravity through the tilting rod 151, completing the unloading process.

[0053] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An automatic welding device for transformer bellows, characterized by: The invention comprises a mounting frame (1), wherein the mounting frame (1) comprises a workbench (11), a placement frame (12) for placing a corrugated pipe is installed on the top surface of the workbench (11), two pushing claws (24) for clamping the corrugated pipe are provided on the mounting frame (1), a movable plate (4) is installed on the mounting frame (1) for sliding in the horizontal direction, a rotating plate (3) is installed on the movable plate (4) close to the side of the placement frame (12), a top surface of the rotating plate (3) is provided with a plurality of clamping claws (32) for clamping a flange, a rotating member (5) is provided on the movable plate (4) for driving the rotating plate (3) to rotate downward, the flange on the rotating plate (3) can be coaxially abutted with the corrugated pipe on the placement frame (12), and a welding assembly (7) for welding the corrugated pipe and the flange is provided on the mounting frame (1); A mounting cylinder (6) for placing flanges is fixed on the mounting frame (1), and a plurality of flanges are stacked vertically in sequence in the mounting cylinder (6). The bottom surface of the mounting cylinder (6) is in contact with the top surface of the movable plate (4). A clearance groove (61) for the flanges to pass through is provided on the bottom surface of the mounting cylinder (6). A plurality of mounting grooves (62) are provided on the bottom surface of the mounting cylinder (6). The clamping claw (32) can move in the mounting groove (62). An elastic block (63) is fixed to the bottom of the mounting cylinder (6), and the elastic block (63) is located on the side of the mounting cylinder (6) close to the placement frame (12).

2. The automatic welding equipment for transformer bellows according to claim 1, characterized in that: The welding assembly (7) includes a circular ring (71) fixed on the mounting frame (1), a guide rail (72) is provided on the inner circumference of the circular ring (71), a sliding block (73) is installed on the guide rail (72) so as to slide along the circumference of the circular ring (71), a motor 2 (74) is fixed on the side of the sliding block (73), a gear (75) is coaxially fixed to the output end of the motor 2 (74), a gear ring (76) is fixed on the side of the circular ring (71), the gear (75) and the gear ring (76) are meshed with each other, and a welding gun (77) is installed on the side of the sliding block (73) away from the gear ring (76).

3. The automatic welding equipment for transformer bellows according to claim 1, characterized in that: The two pushing claws (24) are respectively located on the upper and lower sides of the corrugated tube, and arc grooves (245) are provided on the relative inner sides of the two pushing claws (24), and the arc grooves (245) can fit with the outer peripheral surface of the corrugated tube. Two pushing rods (22) are vertically slidably installed on the mounting frame (1), and the pushing rods (22) correspond to the pushing claws (24) one by one. A connecting block (23) is provided between the pushing rods (22) and the corresponding pushing claws (24). A long rod (221) and a short rod (222) are fixed to the side of the push rod (22) close to the connecting block (23); a connecting rod (223) is hinged between the long rod (221) and the connecting block (23); a connecting rod (224) is hinged between the short rod (222) and the connecting block (23); the length of the connecting rod (223) is the same as the length of the connecting rod (224); and the connecting rod (223) and the connecting rod (224) are parallel to each other; A second long rod (241) and a second short rod (242) are fixed to the side of the pushing claw (24) away from the bellows. A third connecting rod (243) is hinged between the second short rod (242) and the connecting block (23). A fourth connecting rod (244) is hinged between the second long rod (241) and the connecting block (23). The length of the third connecting rod (243) is the same as that of the fourth connecting rod (244). The third connecting rod (243) and the fourth connecting rod (244) are parallel to each other. The first connecting rod (223) is hinged to the connecting block (23). The end away from the long rod 1 (221) is hinged to the end of the connecting rod 3 (243) away from the short rod 2 (242), the bottom of the pushing rod (22) is hinged with a cylinder 1 (25), the piston rod end of the cylinder 1 (25) is fixed with a pushing block (251), the side of the connecting rod 2 (224) is installed with a fixed column (225), the pushing block (251) is sleeved on the outer periphery of the fixed column (225), and the pushing block (251) is rotatably connected to the fixed column (225); Two cylinders (26) are fixed on the mounting frame (1), and a push plate (2) is fixed to the end of the piston rod of the cylinder (26). The push plate (2) corresponds to the push rod (22) one by one. The push plate (2) is fixedly connected to the end of the corresponding push rod (22) near the side of the bellows. Two vertically arranged guide rods (21) are fixed on the mounting frame (1), and the push plate (2) is sleeved on the outer periphery of the guide rod (21).

4. The automatic welding equipment for transformer bellows according to claim 1, characterized in that: The top surface of the rotating plate (3) is provided with a receiving slot (31) for receiving the clamping claw (32), and the clamping claw (32) comprises an elastic strip (321) hinged to the bottom surface of the rotating plate (3) and a clamping block (322) fixed to the end of the elastic strip (321), and a rubber sheet (323) is fixed to the side of the clamping block (322) close to the flange; the bottom surface of the rotating plate (3) is fixed with a cylinder three (33), and the cylinder three ( A driving plate (34) is fixed to the bottom end of the piston rod of the driving plate (33), and a plurality of driving blocks (35) are fixed to the top surface of the driving plate (34). The plurality of driving blocks (35) are arranged at equal intervals along the circumference of the driving plate (34). The top end of the driving block (35) is hinged with a driving rod (36), and the driving rod (36) corresponds to the elastic strip (321) one by one. The top end of the driving rod (36) is hinged to the corresponding elastic strip (321).

5. The automatic welding equipment for transformer bellows according to claim 4, characterized in that: Two connecting plates (52) are fixed to the bottom surface of the movable plate (4), and the rotating member (5) includes a cylinder four (51) hinged between the two connecting plates (52), and a hinge block one (53) is fixed to the end of the piston rod of the cylinder four (51). A hinge block two (54) is fixed to the bottom surface of the rotating plate (3), and a hinge rod (55) is passed through the side surface of the hinge block two (54). The hinge block one (53) is sleeved on the outer periphery of the hinge rod (55), and the hinge block one (53) is rotatably connected to the hinge rod (55).

6. The automatic welding equipment for transformer bellows according to claim 4, characterized in that: The mounting frame (1) includes a vertically arranged mounting plate (13), a side surface of the mounting plate (13) is provided with a slide groove (131), the mounting plate (13) is slidably mounted with a slider (41) in a horizontal direction through the slide groove (131), the slider (41) is fixedly connected to the side surface of the movable plate (4), a lead screw (42) is rotatably mounted in the slide groove (131), the slider (41) is sleeved on the outer periphery of the lead screw (42), the slider (41) and the lead screw (42) are threadedly matched, a motor (43) is fixed to the side surface of the mounting plate (13), and the output end of the motor (43) is coaxially fixedly connected to the lead screw (42).

7. The automatic welding equipment for transformer bellows according to claim 1, characterized in that: The placement rack (12) includes two horizontally arranged placement rods (121), and vertically arranged support rods (122) are fixed to both ends of the placement rods (121). The bottom ends of the support rods (122) are fixedly connected to the top surface of the workbench (11), and the placement rods (121) can abut against the outer peripheral surface of the corrugated pipe.

8. The automatic welding equipment for transformer bellows according to claim 1, characterized in that: The mounting frame (1) includes a base (14), and two feed rods (15) are installed on the top surface of the base (14). Vertical rods (153) are fixed to both ends of the feed rods (15), and the bottom ends of the vertical rods (153) are fixedly connected to the base (14). The feed rods (15) include an inclined tilting rod (151) and a horizontally arranged buffer rod (152). The inclined rod (151) is located directly below the rotating plate (3), and one end of the inclined rod (151) away from the buffer rod (152) is inclined upward.

9. A transformer bellows welding method, based on the transformer bellows automatic welding equipment according to any one of claims 6 to 8, characterized in that: The steps include: S1. Place the bellows between the two placement rods (121), start the second cylinder (26), and the push plate (2) drives the push rod (22) to move toward the direction close to the bellows, so that the push claw (24) abuts against the bellows; S2, start the cylinder three (33), the cylinder three (33) drives the driving plate (34) to move upward, so that the clamping block (322) is closely fitted with the outer periphery of the flange; S3, start the motor 1 (43), move the movable plate (4) toward the direction close to the bellows, so that the bottom of the mounting cylinder (6) is in contact with the top surface of the movable plate (4), start the cylinder 4 (51), rotate the rotating plate (3) downward, the flange and the bellows are coaxially arranged, start the motor 1 (43) again, so that the flange and the bellows are coaxially abutted, start the cylinder 1 (25), push the claw (24) to drive the bellows toward the direction close to the ring (71), so that the bellows and the flange are in close contact; S4, start the second motor (74), the second motor (74) drives the gear (75) to rotate, the gear (75) moves along the circumference of the ring (71) through the gear ring (76), so that the sliding block (73) moves on the guide rail (72) and drives the welding gun (77) to weld along the seam between the bellows and the flange.

Images