Automatic welding equipment for corrugated pipe for transformer and welding method of automatic welding equipment

Abstract

The invention relates to automatic welding equipment for a corrugated pipe for a transformer and a welding method of the automatic welding equipment. The automatic welding equipment for the corrugated pipe for the transformer comprises a mounting frame, the mounting frame comprises a workbench, a containing frame used for containing the corrugated pipe is mounted on the top face of the workbench, two pushing claws used for clamping the corrugated pipe are arranged on the mounting frame, and a moving plate is slidably mounted on the mounting frame in the horizontal direction; a rotating plate is rotationally installed on the side face, close to the containing frame, of the moving plate, a plurality of clamping claws used for clamping the flange plate are arranged on the top face of the rotating plate, a rotating piece used for driving the rotating plate to rotate downwards is arranged on the moving plate, and the flange plate on the rotating plate can coaxially abut against the corrugated pipe on the containing frame; a welding assembly for welding the corrugated pipe and the flange plate is arranged on the mounting frame; according to the automatic welding equipment for the corrugated pipe for the transformer, the butt joint position of the flange plate and the corrugated pipe is accurate, the welding efficiency is high, and the stability and consistency of the welding quality are ensured.

Description

Technical Field

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

[0002] In the production process of modern transformers, bellows are one of the important accessories, usually used for oil tank sealing and pressure regulation of transformers. Since transformers experience temperature changes, pressure fluctuations and other factors during operation, the quality and sealing of bellows are crucial to the stable operation of transformers. Flanges are usually used to connect bellows to other parts of transformers, so the welding quality of bellows and flanges directly affects the sealing performance and overall reliability of transformers.

[0003] When welding the bellows to the flange, the bellows and the flange must be correctly butted together, and the butt position of the bellows must be accurate. In traditional operations, due to the lack of automation and precise positioning auxiliary tools, the bellows and the flange are often misaligned, resulting in poor welding results. Summary of the invention

[0004] The purpose of the present invention is to provide a transformer bellows automatic welding device with 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: A kind of automatic welding equipment for bellows for transformers, comprising a mounting frame, the mounting frame comprising a workbench, a placing frame for placing bellows is installed on the top surface of the workbench, two pushing claws for clamping the bellows are arranged on the mounting frame, a movable plate is slidingly installed on the mounting frame in the horizontal direction, a rotating plate is rotatably installed on the movable plate close to the side of the placing frame, a plurality of clamping claws for clamping flanges are arranged on the top surface of the rotating plate, a rotating part for driving the rotating plate to rotate downward is arranged on the movable plate, the flange on the rotating plate can be coaxially abutted with the bellows on the placing frame, and a welding assembly for welding the bellows and the flange is arranged on the mounting frame.

[0006] 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 circumferential sliding along 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 meshed with each other, and a welding gun is installed on the side of the sliding block away from the gear ring.

[0007] As a further optimization scheme of the present invention, the two pushing claws are respectively located at the upper and lower sides of the bellows, and the relative inner sides of the two pushing claws are provided with arc grooves, and the arc grooves can fit with the outer peripheral surface of the bellows, and two pushing rods are installed on the mounting frame along the 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; 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, a cylinder 1 is hinged to the bottom of the pushing rod, a pushing block is fixed to the end of the piston rod of the cylinder 1, 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; 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 side of the push plate close to the bellows is fixedly connected to the corresponding end of the push rod. Two vertically arranged guide rods are fixed on the mounting frame, and the push plate is sleeved on the outer periphery of the guide rod.

[0008] 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 in the mounting cylinder in sequence along the vertical direction. The bottom surface of the mounting cylinder is in contact with the top surface of the movable plate. A clearance groove for the flanges to pass through is provided on the bottom surface of the mounting cylinder. Several mounting grooves are provided on the bottom surface of the mounting cylinder. 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.

[0009] As a further optimization scheme of the present invention, the top surface of the rotating plate is provided with an accommodating through 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 a rubber sheet is fixed to the side of the clamping block close to the flange; a cylinder three is fixed to the bottom surface of the rotating plate, a driving plate is fixed to the bottom end of the piston rod of the cylinder three, and a plurality of driving blocks are fixed to the top surface of the driving plate, and the plurality of driving blocks are arranged at equal intervals along the circumference of the driving plate, and a driving rod is hinged to the top end of the driving block, 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.

[0010] 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 member includes a cylinder four hinged between the two connecting plates, 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, 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.

[0011] 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, a slider is installed on the mounting plate through the sliding groove for sliding along the horizontal direction, the slider is fixedly connected to the side of the movable plate, a lead screw is rotatably installed in the sliding groove, the slider is sleeved on the outer periphery of the lead screw, the slider is threadedly matched with the lead screw, a motor 1 is fixed to the side of the mounting plate, and the output end of the motor 1 is coaxially fixedly connected to the lead screw.

[0012] As a further optimization scheme of the present invention, the placement rack includes two horizontally arranged placement rods, and vertically arranged support rods are respectively 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.

[0013] As a further optimization scheme of the present invention, the mounting frame includes a base, and two feeding rods are installed on the top surface of the base. Vertical rods are respectively fixed at both ends of the feeding rods, and the bottom ends of the vertical rods are fixedly connected to the base. The feeding rods include an inclined tilting rod and a horizontally arranged buffer rod. The inclined rod is located directly below the rotating plate, and the end of the inclined rod away from the buffer rod is inclined upward.

[0014] A transformer bellows welding method comprises the following steps: S1, place the bellows between the two placement rods, start the second cylinder, and the push plate drives the push rod to move toward the direction close to the bellows, so that the push claw abuts against the bellows; 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; S3, start the motor 1, move the moving plate toward the direction close to the bellows, make the bottom of the installation tube fit with the top surface of the moving plate, start the cylinder 4, rotate the rotating plate () downward, the flange and the bellows are coaxially arranged, start the motor 1 again, make the flange and the bellows abut coaxially, start the cylinder 1, the push claw drives the bellows to move toward the direction close to the ring, so that the bellows and the flange are tightly abutted; S4. Start motor 2, which drives the gear to rotate. The gear moves along the circumference of the ring through the gear ring, so that the sliding block moves on the guide rail and drives the welding gun to weld along the joint of the bellows and the flange.

[0015] 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 flange with the clamping claws to 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 easy to be misaligned, ensuring the stability and consistency of the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the bellows and the flange abutting against each other in the present invention; Figure 3 It is a structural schematic diagram of the welding assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the push rod and the push claw of the present invention; Figure 5 It is a schematic diagram of the structure of the mounting cylinder and the rotating plate of the present invention; Figure 6 It is a cross-sectional view of the cleaning rotating plate of the present invention.

[0017] In the figure: 1, mounting frame; 11, workbench; 12, placing frame; 121, placing rod; 122, supporting rod; 13, mounting plate; 131, slideway; 14, base; 15, unloading rod; 151, tilting rod; 152, buffer rod; 153, vertical rod; 2, pushing plate; 21, guide rod; 22, pushing rod; 221, long rod 1; 222, short rod 1; 223, connecting rod 1; 224, connecting rod 2; 225, fixing column; 23, connecting block; 24, pushing claw; 241, long rod 2; 242, short rod 2; 243, connecting rod 3; 244, connecting rod 4; 245, arc groove; 25, cylinder 1; 251, pushing block; 26, air cylinder 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, sliding block; 42, lead screw; 43, motor one; 5, rotating part; 51, cylinder four; 52, connecting plate; 53, hinge block one; 54, hinge block two; 55, hinge rod; 6, mounting tube; 61, giving way groove; 62, mounting groove; 63, elastic block; 7, welding assembly; 71, circular ring; 72, guide rail; 73, sliding block; 74, motor two; 75, gear; 76, gear ring; 77, welding gun. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here 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. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Reference Figure 1 and Figure 2 The automatic welding equipment for bellows for transformers includes a mounting frame 1, and the mounting frame 1 includes a workbench 11. A placement frame 12 for placing bellows is installed on the top surface of the workbench 11, and two pushing claws 24 for clamping the bellows are arranged on the mounting frame 1. A moving 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 moving plate 4 close to the placement frame 12. A plurality of clamping claws 32 for clamping flanges are arranged on the top surface of the rotating plate 3, and a rotating member 5 for driving the rotating plate 3 to rotate downward is arranged on the moving plate 4. The flange on the rotating plate 3 can be coaxially abutted with the bellows on the placement frame 12, and a welding assembly 7 for welding the bellows and the flange is arranged on the mounting frame 1.

[0020] 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 easy to be misaligned, ensuring the stability and consistency of the welding quality.

[0021] Reference Figure 1 The placement rack 12 includes two horizontal placement rods 121, and vertical 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. The placement rods 121 can abut against the outer circumference of the corrugated pipe. The corrugated pipe is placed between the two placement rods 121, and the outer circumference of the corrugated pipe abuts against the placement rods 121, so that the corrugated rods remain in a horizontally arranged state, providing stable support for subsequent welding operations.

[0022] Reference Figure 1 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 rod 15, and the bottom ends of the vertical rods 153 are fixedly connected to the base 14. The feed rod 15 includes an inclined 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. The welded bellows and flange fall on the feed 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.

[0023] 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 slidably installed on the guide rail 72 along the circumferential direction of the circular ring 71, and a second motor 74 is fixed on the side of the sliding block 73. A gear 75 is coaxially fixed to the output end of the second motor 74, and a ring gear 76 is fixed on the side of the circular ring 71, and the gear 75 and the ring gear 76 are meshed 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 second motor 74 is started, the second motor 74 drives the gear 75 to rotate, and the gear 75 moves along the circumferential direction 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.

[0024] Reference Figure 2 and Figure 4The two push claws 24 are respectively located at the upper and lower sides of the bellows, and the opposite inner sides of the two push claws 24 are provided with arc grooves 245, and the arc grooves 245 can fit with the outer peripheral surface of the bellows. Two push rods 22 are vertically slidably installed on the mounting frame 1, and 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.

[0025] Reference Figure 4 A long rod 1 221 and a short rod 1 222 are fixed to the side of the push rod 22 close to the connection block 23, a connecting rod 1 223 is hinged between the long rod 1 221 and the connection block 23, and a connecting rod 2 224 is hinged between the short rod 1 222 and the connection block 23. The length of the connecting rod 1 223 is the same as the length of the connecting rod 224, and the connecting rod 1 223 and the connecting rod 2 224 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 corrugated tube. A connecting rod 3 243 is hinged between the short rod 242 and the connection block 23, and a connecting rod 4 244 is hinged between the long rod 241 and the connection block 23. The length of the connecting rod three 243 is the same as that of the connecting rod four 244 , and the connecting rod three 243 and the connecting rod four 244 are parallel to each other. The end of the connecting rod one 223 away from the long rod one 221 is hinged to the end of the connecting rod three 243 away from the short rod two 242 .

[0026] Reference Figure 4 , the bottom of the push rod 22 is hinged with a cylinder 1 25, and a push block 251 is fixed to the end of the piston rod of the cylinder 1 25. A fixed column 225 is installed on the side of the connecting rod 224, and the push block 251 is sleeved on the outer periphery of the fixed column 225, and the push 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, and the side of the push plate 2 close to the corrugated pipe is fixedly connected to the corresponding end of the push rod 22. 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.

[0027] Move the bellows on the placement rod 121 to 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 push claw 24 is in contact with the bellows, and the arc groove 245 of the push claw 24 is in contact with the outer peripheral 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 and the flange are in close contact.

[0028] Reference Figure 5A mounting tube 6 for placing flanges is fixed on the mounting frame 1. Several flanges are stacked vertically in the mounting tube 6. The bottom surface of the mounting tube 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 tube 6. Several mounting grooves 62 are provided on the bottom surface of the mounting tube 6. The clamping claw 32 can move in the mounting grooves 62. An elastic block 63 is fixed at the bottom of the mounting tube 6. The elastic block 63 is located on the side of the mounting tube 6 close to the placement frame 12.

[0029] 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.

[0030] Reference Figure 6 The top surface of the rotating plate 3 is provided with a receiving slot 31 for accommodating the 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 close to 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, and 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 of the driving block 35, 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.

[0031] Start cylinder three 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 abuts against the outer periphery of the flange, and several clamping blocks 322 clamp the flange.

[0032] Reference Figure 5 Two connecting plates 52 are fixed to the bottom of the moving plate 4, and the rotating member 5 includes a cylinder 4 51 hinged between the two connecting plates 52, and a hinge block 1 53 is fixed to the end of the piston rod of the cylinder 4 51. A hinge block 2 54 is fixed to the bottom of the rotating plate 3, and a hinge rod 55 is penetrated through the side of the hinge block 2 54. The hinge block 1 53 is sleeved on the outer periphery of the hinge rod 55, and the hinge block 1 53 is rotatably connected to the hinge rod 55. After the clamping block 322 clamps the flange, the cylinder 4 51 is started, and the piston rod of the cylinder 4 51 contracts, thereby driving the rotating plate 3 to rotate downward, so that the flange is coaxially arranged with the bellows.

[0033] 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 which 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 on the side of the mounting plate 13, and the output end of the motor 43 is coaxially fixedly connected with 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.

[0034] 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 push 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, thereby ensuring the stability and consistency of the welding quality.

[0035] A transformer bellows welding method comprises the following steps: S1. Place the bellows between the two placement rods 121, ensure that the outer circumference of the bellows abuts against the placement rods 121, keep the bellows in a horizontal state, start the 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, and the arc groove 245 of the push claw 24 fits tightly against the outer circumference of the bellows, thereby firmly clamping the bellows; S2, start the cylinder 33, the cylinder 33 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 is closely fitted with the outer periphery of the flange, thereby firmly clamping the flange; S3, start the motor 43, the motor 43 drives the lead screw 42 to rotate, the lead screw 42 drives the movable plate 4 to move toward the direction close to the bellows through the slider 41, so that the bottom of the installation tube 6 fits with the top surface of the movable plate 4, start the cylinder 4 51, the piston rod of the cylinder 4 51 contracts, drives the rotating plate 3 to rotate downward, so that the flange and the bellows are coaxially arranged, start the motor 43 again, so that the flange and the bellows are coaxially abutted, ensure that the docking position of the flange and the bellows is accurate, start the cylinder 1 25, the cylinder 1 25 drives the connecting rod 224 to rotate, the connecting rod 224 drives the pushing claw 24 to move toward the direction close to the ring 71 through the connecting block 23 and the connecting rod 3 243, so that the bellows and the flange are tightly abutted; S5, 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 of the bellows and the flange; 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.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An automatic welding device for transformer bellows, characterized in that: 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 arranged on the mounting frame (1), a movable plate (4) is slidably installed in the horizontal direction on the mounting frame (1), a rotating plate (3) is rotatably installed on the side of the movable plate (4) close to the placement frame (12), a plurality of clamping claws (32) for clamping a flange are arranged on the top surface of the rotating plate (3), a rotating member (5) for driving the rotating plate (3) to rotate downward is arranged on the movable plate (4), 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 arranged on the mounting frame (1).

2. The automatic welding equipment for transformer bellows according to claim 1 is characterized in that: The welding assembly (7) comprises a circular ring (71) fixed on the mounting frame (1), a guide rail (72) being arranged on the inner circumferential surface of the circular ring (71), a sliding block (73) being slidably mounted on the guide rail (72) along the circumferential direction of the circular ring (71), a second motor (74) being fixed on the side of the sliding block (73), a gear (75) being coaxially fixed on the output end of the second motor (74), a gear ring (76) being fixed on the side of the circular ring (71), the gear (75) and the gear ring (76) being meshed with each other, and a welding gun (77) being mounted 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 is characterized in that: The two pushing claws (24) are respectively located at the upper and lower sides of the corrugated tube, and arc grooves (245) are arranged on the opposite 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 arranged between the pushing rods (22) and the corresponding pushing claws (24). A long rod 1 (221) and a short rod 1 (222) are fixed to the side of the push rod (22) close to the connecting block (23); a connecting rod 1 (223) is hinged between the long rod 1 (221) and the connecting block (23); a connecting rod 2 (224) is hinged between the short rod 1 (222) and the connecting block (23); the length of the connecting rod 1 (223) is the same as the length of the connecting rod 2 (224); and the connecting rod 1 (223) and the connecting rod 2 (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 corrugated tube, 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 the length of the fourth connecting rod (244), the third connecting rod (243) and the fourth connecting rod (244) are parallel to each other, and the first connecting rod (223) is hinged to the connecting block (23). The end away from the long rod one (221) is hinged with the end of the connecting rod three (243) away from the short rod two (242); the bottom of the push rod (22) is hinged with a cylinder one (25); the piston rod end of the cylinder one (25) is fixed with a push block (251); a fixed column (225) is installed on the side of the connecting rod two (224); the push block (251) is sleeved on the outer periphery of the fixed column (225); and the push 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 on the end of the piston rod of the cylinder (26). The push plate (2) corresponds to the push rod (22) one by one. The side of the push plate (2) close to the bellows is fixedly connected to the corresponding end of the push rod (22). 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 is characterized in that: A mounting tube (6) for placing flanges is fixed on the mounting frame (1), and a plurality of flanges are stacked in sequence in the vertical direction in the mounting tube (6). The bottom surface of the mounting tube (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 tube (6). A plurality of mounting grooves (62) are provided on the bottom surface of the mounting tube (6). The clamping claw (32) can move in the mounting groove (62). An elastic block (63) is fixed at the bottom of the mounting tube (6). The elastic block (63) is located on the side of the mounting tube (6) close to the placement frame (12).

5. The automatic welding equipment for transformer bellows according to claim 4 is characterized in that: The top surface of the rotating plate (3) is provided with a receiving groove (31) for receiving the clamping claw (32); 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); a rubber sheet (323) is fixed to the side of the clamping block (322) close to the flange; a cylinder (33) is fixed to the bottom surface of the rotating plate (3); the cylinder (33) A driving plate (34) is fixed to the bottom end of the piston rod of the driving plate (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).

6. The automatic welding equipment for transformer bellows according to claim 5 is 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), and 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), and 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).

7. The automatic welding equipment for transformer bellows according to claim 5 is characterized in that: The mounting frame (1) comprises a vertically arranged mounting plate (13), a side surface of the mounting plate (13) is provided with a slide groove (131), a slider (41) is mounted on the mounting plate (13) through the slide groove (131) so as to slide in a horizontal direction, 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 1 (43) is fixed on the side surface of the mounting plate (13), and an output end of the motor 1 (43) is coaxially fixedly connected to the lead screw (42).

8. The automatic welding equipment for transformer bellows according to claim 1 is characterized in that: The placement rack (12) comprises two horizontally arranged placement rods (121), both ends of the placement rods (121) are respectively fixed with vertically arranged support rods (122), 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.

9. The automatic welding equipment for transformer bellows according to claim 1 is characterized in that: The mounting frame (1) comprises a base (14), and two material discharge rods (15) are installed on the top surface of the base (14). Vertical rods (153) are respectively fixed at both ends of the material discharge rods (15), and the bottom ends of the vertical rods (153) are fixedly connected to the base (14). The material discharge rods (15) comprise 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.

10. A transformer bellows welding method, based on the transformer bellows automatic welding equipment according to any one of claims 7 to 9, characterized in that: The steps include: S1, placing the bellows between the two placement rods (121), starting 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), the movable plate (4) moves toward the direction close to the bellows, so that the bottom of the installation tube (6) fits with the top surface of the movable plate (4), start the cylinder 4 (51), the rotating plate (3) rotates 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), the push claw (24) drives the bellows to move toward the direction close to the ring (71), so that the bellows and the flange are tightly abutted; S4, starting 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.

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