A welding tool for boiler production

Abstract

The invention discloses a boiler production welding tool, which belongs to the technical field of welding devices. The boiler production welding tool comprises a bottom shell, a positioning component is provided at the bottom of the bottom shell, a movable component is movably provided on the bottom shell, the movable component comprises a mounting plate movably arranged on the outer side of the bottom shell, two groups of clamping components for clamping metal pipes are movably provided on the outer side of the bottom shell, the clamping components comprise a placing frame and a connecting frame, the placing frame is arranged as a U-shaped frame with an opening facing upward, the connecting frame is arranged at the bottom of the placing frame, two groups of adjusting components are arranged on the mounting plate, and the adjusting components are connected to the corresponding connecting frames. The tool has the advantages of stable positioning, flexible adjustment, meeting the clamping requirements of metal pipes of different sizes at different positions, convenient operation, and simple and practical use.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to a welding tool for boiler production. Background Art

[0002] Welding is one of the main technological means in modern boiler manufacturing. Welding accounts for more than half of the entire manufacturing workload of the boiler body. Therefore, the quality of welding is often the main indicator of the quality of boiler manufacturing and has an important impact on the safety and reliability of boiler operation.

[0003] When the existing boiler production welding tooling is used, the device is usually fixed on the outer wall of the boiler and the metal pipe is clamped by two clamping jaws. However, due to the small size of the clamping jaws and the generally heavy weight of the metal pipe, only straight pipes can be simply clamped, and it is inconvenient to stably clamp metal straight pipes or curved pipes of different sizes, which may cause the metal pipe to be offset during the welding process. Moreover, only a single metal pipe can be clamped, and the coaxiality of the two metal pipes to be welded cannot be guaranteed, which seriously affects the welding effect.

[0004] Therefore, it is necessary to provide a boiler production welding tool to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide a boiler production welding tool to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A welding tool for boiler production, comprising a bottom shell, a positioning assembly is arranged at the bottom of the bottom shell, a movable assembly is movably arranged on the bottom shell, the movable assembly comprises a mounting plate movably arranged on the outer side of the bottom shell, two groups of clamping assemblies for clamping metal pipes are movably arranged on the outer side of the bottom shell, the clamping assembly comprises a placing frame and a connecting frame, the placing frame is arranged as a U-shaped frame with an opening facing upward, the connecting frame is arranged at the bottom of the placing frame, two groups of adjusting assemblies are arranged on the mounting plate, and the adjusting assemblies are connected to the corresponding connecting frames;

[0008] The adjusting assembly includes a mounting seat fixedly mounted on the mounting plate, a rotating cylinder is rotatably arranged on the mounting seat, a worm groove is arranged on the outer side of the rotating cylinder, a worm gear meshing with the worm gear groove is rotatably arranged on the mounting seat, the worm gear is connected to a second motor mounted on the mounting seat, a fixed support plate is fixedly mounted on the rotating cylinder, an end of the fixed support plate away from the rotating cylinder is hinged to one end of the connecting frame, a lifting seat is slidably arranged on the fixed support plate, a movable support plate is hinged between the outer end of the lifting seat and the end of the connecting frame away from the fixed support plate, and an adjusting module is arranged between the rotating cylinder and the fixed support plate.

[0009] The transmission gear of the present invention is a gear which is connected with the first end of the gear to the first clutch and the gear is connected with the transmission gear of the present invention to the gear of the first clutch.

[0010] As a further solution of the present invention, the positioning assembly includes a plurality of positioning suction cups circumferentially distributed on the outside of the bottom shell, the positioning suction cups are rotatably connected to an external bracket circumferentially distributed on the outer wall of the bottom shell, a vacuum pump is provided inside the bottom shell, and an air suction pipe that passes through the side wall of the bottom shell is connected between the vacuum pump and the corresponding positioning suction cups.

[0011] As a further scheme of the present invention, the movable component includes a rotating disk rotatably arranged on the top of the bottom shell, a bevel gear disk connected to the rotating disk movably provided in the bottom shell, an active bevel gear meshing with the bevel gear disk movably provided in the bottom shell, the active bevel gear is connected to the first motor installed on the bottom shell, a plurality of movable columns are slidably provided on the rotating disk, one end of the movable column is connected to the mounting disk, the other end of the movable column passes through the bevel gear disk and is connected to a connecting ring movably arranged inside the bottom shell, a plurality of clamping frames are circumferentially distributed on the outer side of the connecting ring, the clamping frame is slidably matched with the connecting ring, and an electric cylinder is connected between the clamping frame and the bottom of the bottom shell.

[0012] As a further solution of the present invention, the clamping assembly includes two clamping groups respectively arranged on the side walls of the placement frame, the clamping group includes two second rotating rods rotatably arranged on the side walls of the placement frame, side plates are respectively installed at both ends of the second rotating rods, the outer ends of the side plates are connected to clamping rollers that are movably abutted against the outer wall of the metal tube, and a fixing module that cooperates with the second rotating rod is provided on the connecting frame.

[0013] As a further solution of the present invention, the fixing module includes a bidirectional screw rotatably arranged inside the connecting frame, the bidirectional screw is connected to a third motor installed at the end of the connecting frame, both ends of the bidirectional screw are respectively threadedly connected to a sliding thread plate slidably arranged inside the connecting frame, both ends of the sliding thread plate are respectively installed with an L-shaped bent rod, the second rotating rod is symmetrically and spirally provided with a second spiral piece, the outer end of the L-shaped bent rod is connected to a movable seat that slides with the two second rotating rods on the corresponding side, and the movable seat slides with the second spiral piece.

[0014] As a further solution of the present invention, the slot depth of the first rotating rod is consistent with the slot depth of the first slot plate.

[0015] As a further solution of the present invention, four positioning suction cups are provided.

[0016] As a further solution of the present invention, the clamping roller is made of rubber.

[0017] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0018] 1. In the present invention, the device can be stably attached to the outer wall of the boiler through the positioning component, the metal pipe can be stably clamped through the clamping component, and the coaxial clamping of two metal pipes can be achieved, avoiding the problem that two metal pipes with different axes cannot be effectively welded. The state of the connection frame can be adjusted during the activity through the adjustment component, which can meet the clamping requirements of different positions of metal pipes of different shapes and sizes, thereby improving the applicability of the device;

[0019] 2. In the present invention, when the second chuck is engaged with the second slot plate and the first chuck is not engaged with the first slot plate, the position of the guide slide bar can be fixed, the fixed support plate drives the connection frame and the placement frame to rotate synchronously by being hinged with the connection frame, and the lifting seat pushes the other end of the connection frame upward and outward by being hinged with the movable support plate, so as to ensure that the connection frame always maintains a horizontal state during the activity, so as to facilitate the clamping of metal pipes at different positions;

[0020] 3. In the present invention, the clamping requirements of metal pipes with inconsistent sizes can be met through the cooperation of the movable component, the adjustment component and the clamping component. The adjustment component adjusts the positions of the placement frame and the connection frame so that the clamping component corresponds to the appropriate position on the metal pipe. The height of the clamping component can be adjusted through the movable component so that the clamping component contacts the metal pipe, thereby achieving the clamping processing of metal pipes with inconsistent sizes and facilitating the subsequent welding operation.

[0021] 4. In the present invention, when the first electromagnet and the second electromagnet are energized and approach each other, the guide slide bar moves into the cavity inside the rotating cylinder, the first chuck is engaged with the first slot plate, and the engagement between the second chuck and the second slot plate is released. The fixed support plate drives the movable support plate to rotate downward synchronously by being relatively fixed with the lifting seat, and the fixed support plate can drive the connecting frame to rotate downward around the rotating cylinder by cooperating with the movable support plate. At this time, there is an inclination angle between the rotating cylinder and the horizontal plane, so the rotation of the clamping assembly can be realized. The two sets of adjustment assemblies meet the clamping requirements of the two ends of the bent pipes at different angles by adjusting the angles of the corresponding clamping assemblies, thereby improving the practicality of the device.

[0022] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the boiler production welding tooling in the embodiment of the invention.

[0024] Figure 2 It is a cross-sectional view of a positioning component and a movable component in an embodiment of the invention.

[0025] Figure 3 It is an exploded view of the positioning components and the movable components in the embodiment of the invention.

[0026] Figure 4 It is a schematic structural diagram of the clamping assembly in an embodiment of the invention.

[0027] Figure 5 It is a cross-sectional view of a clamping assembly in an embodiment of the invention.

[0028] Figure 6 It is a first structural schematic diagram of the adjustment component in an embodiment of the invention.

[0029] Figure 7 It is a second structural schematic diagram of the adjustment component in the embodiment of the invention.

[0030] Figure 8 It is a first cross-sectional view of the adjustment assembly in the embodiment of the invention.

[0031] Fig. 9 It is a second cross-sectional view of the adjustment assembly in the embodiment of the invention.

[0032] Figure numerals: 1, bottom shell; 101, outer bracket; 102, air vent; 2, positioning assembly; 201, positioning suction cup; 202, suction pipe; 203, vacuum pump; 3, movable assembly; 301, first motor; 302, active bevel gear; 303, rotating disk; 304, bevel gear disk; 305, mounting disk; 306, movable column; 307, connecting ring; 308, card frame; 309, electric cylinder; 4, adjustment assembly; 401, mounting seat; 402, second motor; 403, worm; 404, rotating cylinder; 4041, worm wheel groove; 405, fixed support plate; 406, lifting seat; 407, movable support plate; 408, through groove; 4 09. The first rotating rod; 410. The spiral piece; 411. The first transmission bevel gear; 412. The second transmission bevel gear; 413. The guide slide rod; 414. The first chuck; 415. The second chuck; 416. The first slot plate; 417. The first electromagnet; 418. The second electromagnet; 419. The second slot plate; 420. The connecting plate; 5. The clamping assembly; 501. The placement frame; 502. The connecting frame; 503. The third motor; 504. The bidirectional screw; 505. The sliding thread plate; 506. The L-shaped bending rod; 507. The moving seat; 508. The second rotating rod; 509. The second spiral piece; 510. The side plate; 511. The clamping roller; 6. The metal pipe. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] In one embodiment of the present invention, see Figure 1-Figure 3 A boiler production welding tool comprises a bottom shell 1, a positioning component 2 is provided at the bottom of the bottom shell 1, a movable component 3 is movably provided on the bottom shell 1, the movable component 3 comprises a mounting plate 305 movably provided on the outer side of the bottom shell 1, two groups of clamping components 5 for clamping metal pipes 6 are movably provided on the outer side of the bottom shell 1, the clamping components 5 comprise a placing frame 501 and a connecting frame 502, the placing frame 501 is configured as a U-shaped frame with an opening facing upward, the connecting frame 502 is arranged at the bottom of the placing frame 501, two groups of adjusting components 4 are provided on the mounting plate 305, and the adjusting components 4 are connected to the corresponding connecting frames 502.

[0036] In this embodiment, the device can be stably attached to the outer wall of the boiler through the positioning component 2, the position and direction of the adjustment component 4 and the clamping component 5 can be adjusted through the movable component 3, the metal pipe 6 can be stably clamped through the clamping component 5, and the metal pipes 6 of different shapes and sizes can be clamped through the cooperation of the adjustment component 4 and the clamping component 5, which facilitates efficient and stable welding between the boiler and the metal pipe 6 and between two metal pipes 6, thereby improving the practicality of the device;

[0037] The outer side of the bottom shell 1 is provided with a plurality of air holes 102 , through which the air holes 102 facilitate the circulation of the gas inside the bottom shell 1 .

[0038] In one embodiment of the present invention, see Figure 1-Figure 4 , Figure 6-Figure 9 The adjusting assembly 4 comprises a mounting seat 401 fixedly mounted on the mounting plate 305, a rotating cylinder 404 is rotatably arranged on the mounting seat 401, a worm groove 4041 is arranged on the outer side of the rotating cylinder 404, a worm 403 meshing with the worm groove 4041 is rotatably arranged on the mounting seat 401, the worm 403 is connected to a second motor 402 mounted on the mounting seat 401, a fixed support plate 405 is fixedly mounted on the rotating cylinder 404, one end of the fixed support plate 405 away from the rotating cylinder 404 is hinged to one end of the connecting frame 502, a lifting seat 406 is slidably arranged on the fixed support plate 405, a movable support plate 407 is hinged between the outer end of the lifting seat 406 and one end of the connecting frame 502 away from the fixed support plate 405, and an adjusting module is arranged between the rotating cylinder 404 and the fixed support plate 405;

[0039] The adjusting module includes a through slot 408 arranged on the fixed support plate 405, a first rotating rod 409 is rotatably arranged in the through slot 408, a spiral piece 410 is spirally arranged on the outer side of the first rotating rod 409 and is slidably matched with the lifting seat 406, a cavity is arranged inside the rotating cylinder 404, a first transmission bevel gear 411 connected to the first rotating rod 409 is movably arranged in the cavity, a second transmission bevel gear 412 coaxial with the rotating axis of the rotating cylinder 404 is movably arranged in the cavity, the second transmission bevel gear 412 is rotatably matched with the rotating cylinder 404 and meshed with the first transmission bevel gear 411, a guide slide rod 412 is slidably arranged in the second transmission bevel gear 412 13. The two ends of the guide slide bar 413 are respectively provided with a first chuck 414 and a second chuck 415. One end of the rotating cylinder 404 is fixedly provided with a first slot plate 416 movably engaged with the first chuck 414. The end of the first chuck 414 away from the guide slide bar 413 is provided with a first electromagnet 417. The outer end of the first slot plate 416 is provided with a second electromagnet 418 corresponding to the first electromagnet 417. The outer side of the end of the mounting seat 401 away from the first slot plate 416 is provided with a second slot plate 419 movably engaged with the second chuck 415. The outer side wall of the second slot plate 419 is connected to the mounting seat 401 through a connecting plate 420.

[0040] In this embodiment, in the initial state, the fixed support plate 405 is in a vertical state, the connecting frame 502 is in a horizontal state, the height of the lifting seat 406 is fixed, the first electromagnet 417 and the second electromagnet 418 are energized and move away from each other, at this time, the second chuck 415 is engaged with the second card slot plate 419, and the first chuck 414 is not engaged with the first card slot plate 416, so that the position of the guide slide bar 413 can be fixed. Since the guide slide bar 413 and the second transmission bevel gear 412 are in sliding cooperation, the position of the second transmission bevel gear 412 is fixed and will not rotate;

[0041] When the metal tube 6 is a straight tube with the same size, the metal tube 6 can be clamped by the clamping assembly 5. When the distance between the metal tube 6 and the boiler changes, the second motor 402 drives the worm 403 to rotate. The worm 403 engages with the worm wheel groove 4041 and the rotating cylinder 404 and the mounting seat 401 rotate in coordination to drive the rotating cylinder 404 to rotate downward. The rotating cylinder 404 drives the fixed support plate 405 to rotate downward. The fixed support plate 405 drives the connecting frame 502 and the placement frame 501 to rotate synchronously by being hinged with the connecting frame 502. At the same time, since the position of the second transmission bevel gear 412 is fixed, the fixed support plate 405 drives the first transmission bevel gear 412 to rotate synchronously by driving the first rotating rod 409 The gear 411 rotates synchronously, and the first transmission bevel gear 411 drives the first rotating rod 409 to rotate by meshing with the second transmission bevel gear 412. The first rotating rod 409 drives the spiral piece 410 to rotate synchronously, and the spiral piece 410 and the lifting seat 406 slide in cooperation, and the fixed support plate 405 and the lifting seat 406 slide in cooperation to drive the lifting seat 406 away from the mounting seat 401. The lifting seat 406 pushes the other end of the connecting frame 502 upward and outward by being hinged with the movable support plate 407, so as to ensure that the connecting frame 502 always maintains a horizontal state during the activity. At this time, the metal pipe 6 can be clamped by the clamping assembly 5, so as to realize the clamping of the metal pipe 6 at different positions.

[0042] In addition, through the cooperation of the movable component 3, the adjustment component 4 and the clamping component 5, the clamping requirements of the metal pipe 6 with inconsistent sizes can be met. Specifically, the adjustment component 4 adjusts the positions of the placement frame 501 and the connection frame 502 so that the clamping component 5 corresponds to the appropriate position on the metal pipe 6. Through the movable component 3, the height of the clamping component 5 can be adjusted so that the clamping component 5 contacts the metal pipe 6, thereby achieving the clamping processing of the metal pipe 6 with inconsistent sizes, which is convenient for the subsequent welding operation.

[0043] When the metal tube 6 is set as a curved tube, the first electromagnet 417 and the second electromagnet 418 are energized and approach each other, the guide slide bar 413 moves into the cavity inside the rotating cylinder 404, the first chuck 414 is engaged with the first slot plate 416, and the engagement between the second chuck 415 and the second slot plate 419 is released. At this time, the second transmission bevel gear 412 and the rotating cylinder 404 are in a synchronous state, and the second motor 402 drives the worm 403 to rotate. The worm 403 is engaged with the worm wheel groove 4041 and the rotating cylinder 404 and the mounting seat 401 rotate to drive the rotating cylinder 404 to rotate downward. The rotating cylinder 404 drives the fixed support plate 405 to rotate downward. The fixed support plate 405 drives the connecting frame 502 and the placement frame 501 to rotate synchronously by being hinged with the connecting frame 502. At the same time, due to the second The transmission bevel gear 412 and the rotating cylinder 404 are in a synchronous state, and there is no relative rotation between the second transmission bevel gear 412 and the first transmission bevel gear 411. At this time, the first rotating rod 409 does not rotate, and the distance between the lifting seat 406 and the rotating cylinder 404 can be fixed. The fixed support plate 405 drives the movable support plate 407 to rotate downward synchronously by being relatively fixed with the lifting seat 406. The fixed support plate 405 can drive the connecting frame 502 to rotate downward around the rotating cylinder 404 by cooperating with the movable support plate 407. At this time, there is an inclination angle between the rotating cylinder 404 and the horizontal plane, which can realize the rotation of the clamping assembly 5. The two sets of adjustment assemblies 4 meet the clamping requirements of the two ends of the elbow at different angles by adjusting the angles of the corresponding clamping assemblies 5, thereby improving the practicality of the device.

[0044] The slot depth of the first rotating rod 409 is consistent with the slot depth of the first slot plate 416 , which can ensure that the relative rotation of the first transmission bevel gear 411 will not interfere with each other.

[0045] In one embodiment of the present invention, see Figure 1-Figure 3 The positioning assembly 2 includes a plurality of positioning suction cups 201 circumferentially distributed on the outside of the bottom shell 1. The positioning suction cups 201 are rotatably connected to an external bracket 101 circumferentially distributed on the outer wall of the bottom shell 1. A vacuum pump 203 is provided inside the bottom shell 1. An air suction pipe 202 that passes through the side wall of the bottom shell 1 is connected between the vacuum pump 203 and the corresponding positioning suction cups 201.

[0046] In this embodiment, when in use, a plurality of positioning suction cups 201 are attached to the outer wall of the boiler, the vacuum pump 203 is powered on and the air in the space enclosed by the positioning suction cups 201 and the outer wall of the boiler is extracted through the suction pipe 202, the air pressure in the space enclosed by the positioning suction cups 201 and the outer wall of the boiler is reduced, and the device can be stably fixed on the outer wall of the boiler through the pressure difference, which is convenient for subsequent welding processing;

[0047] There are four positioning suction cups 201 to facilitate multi-point contact between the device and the boiler and improve the stability of the device.

[0048] In one embodiment of the present invention, see Figure 1-Figure 3 The movable component 3 includes a rotating disk 303 rotatably arranged on the top of the bottom shell 1, a bevel gear disk 304 connected to the rotating disk 303 is movably provided in the bottom shell 1, an active bevel gear 302 meshing with the bevel gear disk 304 is movably provided in the bottom shell 1, and the active bevel gear 302 is connected to the first motor 301 installed on the bottom shell 1. A plurality of movable columns 306 are slidably provided on the rotating disk 303, one end of the movable column 306 is connected to the mounting disk 305, and the other end of the movable column 306 penetrates the bevel gear disk 304 and is connected to a connecting ring 307 movably arranged inside the bottom shell 1, and a plurality of card frames 308 are distributed circumferentially on the outer side of the connecting ring 307, and the card frame 308 is slidably matched with the connecting ring 307, and an electric cylinder 309 is connected between the card frame 308 and the bottom of the bottom shell 1.

[0049] In this embodiment, the first motor 301 drives the active bevel gear 302 to rotate, the active bevel gear 302 drives the rotating disk 303 to rotate by meshing with the bevel gear disk 304 and the rotating disk 303 and the bottom shell 1 rotating in cooperation, the rotating disk 303 drives the mounting disk 305 to rotate synchronously by sliding cooperation with the movable column 306, the mounting disk 305 drives the clamping assembly 5 to rotate synchronously by connecting with the adjusting assembly 4, and the metal pipe 6 in different directions can be clamped;

[0050] Furthermore, after the metal tube 6 is clamped by the clamping assembly 5, when the position of the metal tube 6 at this time is spaced apart from the required welding position along the axial direction of the movable column 306, the electric cylinder 309 extends and drives the clamping frame 308 to move upward synchronously, and the clamping frame 308 pushes the connecting ring 307 to move upward synchronously by sliding with the connecting ring 307, and the connecting ring 307 pushes the mounting plate 305 to move upward synchronously by connecting with the movable column 306, and the mounting plate 305 pushes the clamping assembly 5 and the metal tube 6 to move synchronously by connecting with the adjusting assembly 4, so as to facilitate the adjustment of the position of the metal tube 6;

[0051] Through the cooperation of the movable component 3 and the adjusting component 4, the position of the metal tube 6 is adjusted in multiple ways, so as to facilitate efficient and accurate welding between the metal tube 6 and the boiler wall and between two metal tubes 6.

[0052] In one embodiment of the present invention, see Figure 1-Figure 5The clamping assembly 5 includes two clamping groups respectively arranged on the side walls of the placement frame 501, and the clamping groups include two second rotating rods 508 rotatably arranged on the side walls of the placement frame 501, and the two ends of the second rotating rods 508 are respectively installed with side plates 510, and the outer ends of the side plates 510 are connected to clamping rollers 511 that are movably abutted against the outer wall of the metal tube 6, and the connecting frame 502 is provided with a fixing module that matches the second rotating rods 508;

[0053] The fixing module includes a bidirectional screw 504 rotatably arranged inside the connecting frame 502, the bidirectional screw 504 is connected to a third motor 503 installed at the end of the connecting frame 502, both ends of the bidirectional screw 504 are respectively threadedly connected to a sliding thread plate 505 slidably arranged inside the connecting frame 502, both ends of the sliding thread plate 505 are respectively installed with an L-shaped bent rod 506, the second rotating rod 508 is symmetrically and spirally provided with a second spiral piece 509, the outer end of the L-shaped bent rod 506 is connected to a moving seat 507 that slidably cooperates with the two second rotating rods 508 on the corresponding side, and the moving seat 507 slidably cooperates with the second spiral piece 509.

[0054] In this embodiment, in the initial state, the symmetrically arranged sliding thread plates 505 are away from each other, and the clamping rollers 511 on the same side are away from each other. At this time, the distance between the clamping groups on both sides is the largest, which facilitates the placement of the metal tube 6 between the two clamping groups.

[0055] By adjusting the cooperation of the component 4 and the clamping component 5, the placement frame 501 can be moved to the corresponding position of the metal tube 6. When the metal tube 6 needs to be clamped, the third motor 503 drives the bidirectional screw 504 to rotate clockwise. The bidirectional screw 504 drives the symmetrically arranged sliding thread plates 505 to approach each other by threaded connection with the sliding thread plate 505 and the sliding thread plate 505 and the connecting frame 502 slidingly cooperate. The sliding thread plate 505 drives the symmetrically arranged moving seats 507 to approach each other. The moving seats 507 are threaded with the second spiral sheet 509. The second rotating rods 508 are driven to rotate toward the middle of the placing frame 501 by the cooperation and the rotation cooperation between the second rotating rods 508 and the placing frame 501. The second rotating rods 508 drive the clamping rollers 511 to rotate synchronously by connecting with the side plates 510. The symmetrically arranged clamping rollers 511 abut against the outer wall of the metal tube 6 by approaching each other, so as to achieve symmetrical clamping of the metal tube 6. At the same time, the coaxial clamping of the two metal tubes 6 can be achieved by the symmetrically arranged clamping rollers 511, so as to avoid the problem that the two metal tubes 6 with different axes cannot be effectively welded.

[0056] The clamping roller 511 is made of rubber, which can increase the friction between the clamping roller 511 and the outer wall of the metal tube 6 and avoid the problem of slippage of the metal tube 6 during the welding process.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler production welding tool, including a bottom shell, characterized in that: A positioning assembly is provided at the bottom of the bottom shell, and a movable assembly is movably provided on the bottom shell, the movable assembly includes a mounting plate movably provided on the outside of the bottom shell, and two groups of clamping assemblies for clamping metal pipes are movably provided on the outside of the bottom shell, and the clamping assembly includes a placement frame and a connection frame, and the connection frame is provided at the bottom of the placement frame, and two groups of adjustment assemblies are provided on the mounting plate, and the adjustment assemblies are connected to the corresponding connection frames; The adjusting assembly includes a mounting seat fixedly mounted on the mounting plate, a rotating cylinder is rotatably arranged on the mounting seat, a worm groove is arranged on the outer side of the rotating cylinder, a worm engaged with the worm groove is rotatably arranged on the mounting seat, the worm is connected to a second motor mounted on the mounting seat, a fixed support plate is fixedly mounted on the rotating cylinder, an end of the fixed support plate away from the rotating cylinder is hinged to an end of the connecting frame, a lifting seat is slidably arranged on the fixed support plate, a movable support plate is hinged between the outer end of the lifting seat and an end of the connecting frame away from the fixed support plate, and an adjusting module is arranged between the rotating cylinder and the fixed support plate; The adjusting module includes a through slot arranged on the fixed support plate, the through slot being rotatably provided with a first rotating rod, the outer side of the first rotating rod being spirally provided with a spiral sheet that is slidably matched with the lifting seat, the rotating cylinder is provided with a cavity, a first transmission bevel gear connected to the first rotating rod is movably provided in the cavity, a second transmission bevel gear coaxial with the rotating shaft of the rotating cylinder is movably provided in the cavity, the second transmission bevel gear is movably provided in the cavity, and a guide sliding rod is slidably provided in the second transmission bevel gear that is coaxial with the rotating shaft of the rotating cylinder and rotatably matches with the rotating cylinder and meshes with the first transmission bevel gear. Two ends of the guide sliding rod are respectively provided with the first chuck and the second chuck at each end of the rotating cylinder, a first slot plate that is movably connected to the first chuck is fixedly provided at one end of the rotating cylinder, a first electromagnet is provided at an end of the first chuck away from the guide sliding rod, a second electromagnet corresponding to the first electromagnet is provided at the outer end of the first slot plate, and a second slot plate that is movably connected to the second chuck is provided on the outer side of the end of the mounting seat away from the first slot plate, and an outer side wall of the second slot plate is connected to the mounting seat through a connecting plate. The depth of the slot of the first rotating rod is consistent with the depth of the slot of the first slot plate.

2. The boiler production welding tool according to claim 1 is characterized in that: The positioning assembly includes a plurality of positioning suction cups circumferentially distributed on the outside of the bottom shell. The positioning suction cups are rotatably connected to external brackets circumferentially distributed on the outer wall of the bottom shell. A vacuum pump is provided inside the bottom shell. An air suction pipe that runs through the side wall of the bottom shell is connected between the vacuum pump and the corresponding positioning suction cups.

3. The boiler production welding tool according to claim 1 is characterized in that: The movable component includes a rotating disk rotatably arranged on the top of the bottom shell, a bevel gear disk connected to the rotating disk movably provided in the bottom shell, an active bevel gear meshing with the bevel gear disk movably provided in the bottom shell, the active bevel gear is connected to the first motor installed on the bottom shell, a plurality of movable columns are slidably arranged on the rotating disk, one end of the movable column is connected to the mounting disk, the other end of the movable column passes through the bevel gear disk and is connected to a connecting ring movably arranged inside the bottom shell, a plurality of card frames are circumferentially distributed on the outer side of the connecting ring, the card frame is slidably matched with the connecting ring, and an electric cylinder is connected between the card frame and the bottom of the bottom shell.

4. The boiler production welding tool according to claim 1, characterized in that: The clamping assembly includes two clamping groups respectively arranged on the side walls of the placement frame, the clamping group includes two second rotating rods rotatably arranged on the side walls of the placement frame, side plates are respectively installed at both ends of the second rotating rods, the outer ends of the side plates are connected to clamping rollers that are movably abutted against the outer wall of the metal tube, and a fixing module that cooperates with the second rotating rod is provided on the connecting frame.

5. The boiler production welding tool according to claim 4, characterized in that: The fixing module includes a bidirectional screw rotatably arranged inside the connecting frame, the bidirectional screw is connected to a third motor installed at the end of the connecting frame, both ends of the bidirectional screw are respectively threadedly connected to a sliding thread plate slidably arranged inside the connecting frame, both ends of the sliding thread plate are respectively installed with an L-shaped bent rod, a second spiral piece is symmetrically and spirally arranged on the second rotating rod, the outer end of the L-shaped bent rod is connected to a moving seat that slides with the two second rotating rods on the corresponding side, and the moving seat slides with the second spiral piece.

6. The boiler production welding tool according to claim 2, characterized in that: There are four positioning suction cups.

7. The boiler production welding tool according to claim 5, characterized in that: The clamping rollers are made of rubber.

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