Fiber laser pipe connecting machine

Abstract

The invention discloses an optical fiber laser pipe connecting machine, and relates to the technical field of laser cutting equipment, the optical fiber laser pipe connecting machine comprises a workpiece fixing assembly and a laser cutting assembly, the workpiece fixing assembly comprises a workbench, a rotating table is rotatably arranged on the workbench, and a positioning mechanism used for vertically positioning two workpieces is arranged on the rotating table; the laser cutting assembly comprises a mounting frame, a support is fixedly arranged on the side wall of the mounting frame, a reel wound with a welding wire is rotationally arranged on the support, a wheel carrier parallel to the plane where the mounting frame is located is rotationally arranged at the end, close to the reel, of the mounting frame, and two wire guide wheels are rotationally arranged on the wheel carrier. The laser cutting device swings left and right in the advancing direction in the laser cutting moving process, the swinging method laser cutting effect is achieved, the situation that energy of a laser head is excessively concentrated at a weld joint is avoided, the heat transfer amount of a tungsten needle to the weld joint is low, overburning is not likely to happen, and the risk of weld beading is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting equipment, and in particular to a fiber laser pipe cutting machine. Background Art

[0002] Fiber laser cutting machine is a laser cutting machine that uses a fiber laser generator as a light source. Fiber laser is a new type of fiber laser newly developed internationally that outputs a high-energy-density laser beam and focuses it on the surface of the workpiece, causing the area on the workpiece irradiated by the ultra-fine focal spot to instantly melt and vaporize. Automatic cutting is achieved by moving the spot irradiation position through a CNC mechanical system. Compared with bulky gas lasers and solid lasers, it has obvious advantages and has gradually developed into an important candidate in the fields of high-precision laser processing, laser radar systems, space technology, laser medicine, etc. Fiber laser cutting machine can do both plane cutting and bevel cutting, and its edges are neat and smooth. It is suitable for high-precision cutting of metal plates, etc. At the same time, with the addition of a robotic arm, it can perform three-dimensional cutting instead of the originally imported five-axis laser. It saves more space and gas consumption than ordinary carbon dioxide laser cutting machines, and has a high photoelectric conversion rate. It is a new energy-saving and environmentally friendly product, and it is also one of the world's leading technology products.

[0003] When a traditional pipe cutting machine performs vertical laser cutting on a workpiece, although the vertically arranged third and fourth cover plates play a positioning role so that the laser head and the weld are kept equidistant during laser cutting, the TIG laser head passes through the first and second cover plates and is always parallel to the weld during the laser cutting process. The energy is too concentrated during laser cutting, and unevenness is more likely to occur. It is difficult to ensure that the entire weld is defect-free and has uniform transparency. Weld nodules are prone to occur at the laser cutting site, affecting the quality and appearance of laser cutting. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the parallel weld laser cutting method in the prior art is prone to weld nodules and uneven weld transparency, which affects the quality and aesthetics of laser cutting, and to propose a fiber laser pipe cutting machine.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fiber laser pipe joining machine comprises a workpiece fixing assembly and a laser cutting assembly, wherein the workpiece fixing assembly comprises a worktable, a rotating table is rotatably arranged on the worktable, and a positioning mechanism for vertically positioning two workpieces is arranged on the rotating table;

[0007] The laser cutting assembly includes a mounting frame, a bracket is fixedly provided on the side wall of the mounting frame, a reel with a welding wire wound thereon is rotatably provided on the bracket, a wheel frame parallel to the plane where the mounting frame is located is rotatably provided on the mounting frame near one end of the reel, two wire wheels are rotatably provided on the wheel frame, an axis body perpendicular to the plane where the mounting frame is located is rotatably provided on the other end of the mounting frame, positioning wheels are fixedly provided at both ends of the axis body, a mounting rod is rotatably provided on the mounting frame, a laser head is fixedly installed at the middle position of the mounting rod, a reciprocating swinging mechanism is provided between the axis body and the mounting rod, and a handle is also hinged on the mounting frame, a push switch corresponding to the handle is provided on the mounting frame, and the push switch is electrically connected to the laser head.

[0008] Preferably, the positioning mechanism includes two symmetrically arranged clamping blocks slidably arranged on the rotating table, the rotating table is provided with two radially arranged sliding grooves, the clamping blocks are slidably connected to the sliding grooves, and a spring is arranged between the clamping blocks and the inner wall of the sliding groove.

[0009] Preferably, a convex-shaped card slot is provided on one side of the two clamping blocks facing each other, and the width of the card slot is consistent with the thickness of the workpiece.

[0010] Preferably, the guide wheel is arranged in a spindle shape, and an annular groove is provided on the outer edge of the guide wheel.

[0011] Preferably, the cross section of the annular groove is semicircular, and the inner wall of the annular groove is rough.

[0012] Preferably, the positioning wheel is arranged in a frustum shape, and the frustum inclination angle of the positioning wheel is 45°.

[0013] Preferably, the reciprocating swing mechanism includes a swing rod radially arranged on the mounting rod, a ball head is slidably arranged on the swing rod, two groups of eccentric disks are arranged on the shaft body, the two eccentric disks in the same group are fixedly connected by an eccentric column, the two eccentric columns are staggered 180° around the axis of the shaft body, a connecting rod is rotatably sleeved on the eccentric column, and a ball sleeve movably connected to the ball head is fixedly arranged on the top of the connecting rod.

[0014] Preferably, the laser head comprises a tungsten needle and an argon hood sleeved outside the tungsten needle, a gas inlet is provided on a side wall of the argon hood, an argon storage bottle is provided under the workbench, and the argon storage bottle is connected to the gas inlet via a conduit.

[0015] Preferably, a columnar cavity is opened in the argon hood, the air inlet is connected to the columnar cavity, the bottom end of the columnar cavity is connected to the exhaust end of the argon hood, a sealing block is sealingly and slidingly arranged in the columnar cavity, a spring 2 is arranged between the sealing block and the columnar cavity, and the sealing block is connected to the handle by a connecting rope.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The present invention provides a shaft body and a positioning wheel, and supports the positioning wheel and two vertical workpieces, which is conducive to positioning the laser head, so that the tungsten needle of the laser head is kept at a position equidistant from the weld for laser cutting, and in the process of the laser head moving along the weld, the rotation of the positioning wheel drives the shaft body to rotate, so that the shaft body drives the mounting rod for fixing the laser head to swing back and forth, and drives the laser head to swing left and right along the forward direction during the movement, forming the effect of swinging laser cutting, avoiding the laser head energy from being too concentrated at the weld, the tungsten needle has low heat transfer to the weld, is not prone to overburning, and reduces the risk of weld nodules, which is conducive to improving the uniformity of weld transparency and laser cutting quality during laser cutting, so that the weld forms a beautiful fish scale shape.

[0018] 2. The present invention sets a wire wheel and a reel. The wire wheel is parallel to the plane where the mounting frame is located. Therefore, the travel path of the wire wheel coincides with the weld. When in use, the welding wire is passed through the annular groove on the wire wheel. As the wire wheel moves, the welding wire wound on the reel will be pulled out synchronously, thereby realizing automatic replenishment of the welding wire and reducing the difficulty of operation. In addition, the two wire wheels can straighten the welding wire well, which is beneficial to the fitting of the welding wire and the weld, improving the quality of laser cutting, and simplifying the laser cutting steps.

[0019] 3. The present invention provides a columnar cavity and a sealing block, controls the position of the sealing block to change the opening and closing of the air inlet, connects the sealing block to the handle by a connecting rope, and in the process of holding the handle and pressing the push switch to start the laser head, the sealing block will first move up to allow argon to enter the air inlet, and only after the laser head is closed will the sealing block block the air inlet. The method of introducing argon in advance and delaying the cutoff of argon is beneficial to making the environment around the tungsten needle in a state of argon protection before the laser head is started, thereby reducing the occurrence of oxidation and blackening during laser cutting, reducing the generation of welding slag, and improving the quality of laser cutting. In addition, the user does not need to manually control the opening and closing of the argon storage bottle, which is simple and convenient to use and simplifies the operating steps of laser cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a fiber laser take-over machine proposed by the present invention;

[0021] Figure 2 This is a structural schematic diagram of a positioning mechanism in a fiber laser pipe joining machine proposed by the present invention;

[0022] Figure 3 This is a structural schematic diagram of a laser cutting assembly in a fiber laser pipe joining machine proposed by the present invention;

[0023] Figure 4This is a schematic diagram of the structure of a laser cutting assembly in a fiber laser pipe joining machine proposed by the present invention from a bottom view;

[0024] Figure 5 A state diagram of the laser cutting process of a laser cutting component in a fiber laser pipe connecting machine proposed by the present invention;

[0025] Figure 6 A schematic structural diagram of the positional relationship between a fiber laser takeover machine shaft and a positioning wheel proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a reciprocating swing mechanism in a fiber laser pipe taking-over machine proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of a laser head in a fiber laser takeover machine proposed by the present invention.

[0028] In the figure: 1. workpiece fixing assembly; 2. laser cutting assembly; 3. workbench; 4. rotating table; 5. mounting frame; 6. wheel frame; 7. guide wheel; 8. shaft body; 9. positioning wheel; 10. laser head; 11. grip; 12. push switch; 13. clamping block; 14. spring one; 15. slot; 16. ring groove; 17. reel; 18. mounting rod; 19. swing rod; 20. eccentric disk; 21. eccentric column; 22. ball head; 23. connecting rod; 24. ball sleeve; 25. tungsten needle; 26. argon hood; 27. argon storage bottle; 28. sealing block; 29. ​​connecting rope; 30. spring two. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Reference Figure 1-2, a fiber laser pipe taking machine, including a workpiece fixing component 1 and a laser cutting component 2, the workpiece fixing component 1 can position and fix two pieces in a vertical state, facilitate vertical laser cutting between the workpieces, and maintain the positioning accuracy between the workpieces, the laser cutting component 2 can perform swinging laser cutting on the joint between the two workpieces, and simplify the operation process of laser cutting, reduce the difficulty of laser cutting, and improve the quality of laser cutting under the premise of ensuring the quality of laser cutting, the workpiece fixing component 1 includes a workbench 3, a rotating table 4 is rotatably arranged on the workbench 3, and the rotating table 4 can be rotated to change the direction of the rotating table 4, which is conducive to laser cutting processing of different angles on the workpiece on the rotating table 4, the side wall of the workbench 3 is threadedly connected with a threaded rod that is arranged through, and the threaded rod is against the side wall of the rotating table 4, after the adjustment of the rotating table 4 is completed, the threaded rod is rotated to make the threaded rod and the side wall of the rotating table 4 tightly against each other, so as to limit the rotation of the rotating table 4 and reduce the risk of deflection of the rotating table 4 during processing, and a positioning mechanism for vertically positioning the two workpieces is arranged on the rotating table 4, and the positioning mechanism can be used to vertically position the workpieces to be processed, so that the workpieces are in a mutually perpendicular state, which is conducive to the laser cutting process.

[0032] Reference Figure 2 The positioning mechanism includes two symmetrically arranged clamping blocks 13 slidably arranged on the rotating table 4. The rotating table 4 is provided with two radially arranged slide grooves. The clamping blocks 13 are slidably connected with the slide grooves. The clamping blocks 13 can slide in the slide grooves to change their positions. A spring 14 is arranged between the clamping blocks 13 and the inner wall of the slide groove. The two clamping blocks 13 tend to move toward each other through the elastic force of the spring 14. When in use, the two clamping blocks 13 are pulled toward the outer edge of the rotating table 4 to increase the distance between the two clamping blocks 13, and the workpiece is placed horizontally on the rotating table 4. Through the elastic force of spring 14, the clamping blocks 13 move toward each other to clamp and fix the workpiece. The two clamping blocks 13 are provided with a convex-shaped card slot 15 on the opposite sides. The width of the card slot 15 is consistent with the thickness of the workpiece. When the clamping blocks 13 clamp the workpiece, the workpiece is clamped into the horizontal section of the card slot 15 to complete the positioning of the workpiece. After the horizontal workpiece is positioned, the other workpiece is vertically inserted into the vertical section of the card slot 15, so that the two workpieces are in a mutually perpendicular and close state, which is convenient for laser cutting operations.

[0033] The laser cutting assembly 2 includes a mounting frame 5, which includes a cross bar and two vertical bars. The two vertical bars are connected by a cross bar, which is convenient for the operator to hold the cross bar for operation. A bracket is fixedly arranged on the side wall of the mounting frame 5, and a reel 17 with a welding wire wound thereon is rotatably arranged on the bracket. The welding wire adopts a flexible welding wire, which can be deformed freely according to the force, which is conducive to laser cutting in the gap between the two workpieces. A wheel frame 6 parallel to the plane where the mounting frame 5 is located is rotatably arranged near one end of the reel 17 of the mounting frame 5. A torsion spring is arranged between the rotating shaft of the wheel frame 6 and the mounting frame 5. Through the rotation of the wheel frame 6, the wheel frame 6 can move along the contour of the workpiece joint. , so that the wheel frame 6 is more fitted to the weld, and two wire wheels 7 are rotatably arranged on the wheel frame 6. The two wire wheels 7 can guide and position the welding wire, simplify the laser cutting steps, and reduce the difficulty of laser cutting. In addition, by setting two wire wheels 7, when in use, the welding wire passes through the lower edges of the two wire wheels 7 in turn, and the welding wire is pressed on the joint of the workpiece through the wire wheels 7. As the wire wheels 7 roll, the welding wire is drawn out from the reel 17, thereby realizing automatic wire filling in the laser cutting process. Compared with the traditional laser cutting method of holding the laser head in one hand and the welding wire in the other hand, the efficiency is higher, the laser cutting deviation is smaller, and the feeding of the welding wire is more uniform, so the laser cutting quality can be effectively improved.

[0034] Reference Figure 3-4 The wire wheel 7 is arranged in a spindle shape, so the wire wheel 7 is thick in the middle and thin at the edge, and the edge of the wire wheel 7 is pressed into the weld at a vertical angle. An annular groove 16 is provided on the outer edge of the wire wheel 7. The cross-section of the annular groove 16 is arranged in a semicircular shape, which is conducive to the engagement of the annular groove 16 with the welding wire. The welding wire is positioned by the annular groove 16 to reduce the risk of the welding wire and the wire wheel 7 being separated. The inner wall of the annular groove 16 is arranged in a rough shape, which is conducive to increasing the friction between the wire wheel 7 and the welding wire, so that the wire wheel 7 can press the welding wire well, and the processed welding wire is drawn out from the reel 17 to achieve wire output.

[0035] Reference Figure 3-5 At the other end of the mounting frame 5, an axis 8 perpendicular to the plane where the mounting frame 5 is located is rotatably provided. Positioning wheels 9 are fixedly provided at both ends of the axis 8. The two positioning wheels 9 are respectively against the side walls of the two workpieces to be laser cut. The positioning wheels 9 and the guide wheel 7 cooperate to form a three-point support, so that the laser cutting assembly 2 can stably operate at the vertical angular position of the two workpieces.

[0036] Reference Figure 6 The positioning wheel 9 is arranged in a cone shape, and the cone inclination angle of the positioning wheel 9 is 45°. During vertical laser cutting, the angle between the two workpieces is 90°. Therefore, the circumference of the positioning wheel 9 can fit with the surface of the workpiece, which is beneficial to improve the stability of the positioning wheel 9.

[0037] A mounting rod 18 is rotatably provided on the mounting frame 5. The mounting rod 18 is provided between two vertical rods and is parallel to the horizontal rod. A laser head 10 is fixedly installed at the middle position of the mounting rod 18. The laser head 10 and the mounting rod 18 are fastened by bolts. The distance between the laser head 10 and the weld can be adjusted by loosening and tightening the bolts. A reciprocating swing mechanism is provided between the shaft body 8 and the mounting rod 18. When the shaft body 8 rotates, the mounting rod 18 is driven to rotate back and forth repeatedly within a certain angle range through the reciprocating swing mechanism. The laser head 10 can rotate with the rotation of the mounting rod 18, thereby realizing a laser cutting method of swinging laser cutting and improving the laser cutting effect.

[0038] Reference Figure 6-7 The reciprocating swing mechanism includes a swing rod 19 radially arranged on the mounting rod 18. The swing of the swing rod 19 drives the mounting rod 18 to rotate. A ball head 22 is slidably arranged on the swing rod 19. Two groups of eccentric disks 20 are arranged on the shaft body 8. The two groups of eccentric disks 20 are symmetrically arranged on both sides of the mounting frame 5. The two eccentric disks 20 of the same group are fixedly connected by an eccentric column 21. A connecting rod 23 is rotatably sleeved on the eccentric column 21. A ball sleeve 24 movably connected to the ball head 22 is fixedly arranged on the top of the connecting rod 23. When the shaft body 8 rotates, the eccentric column 21 is driven to do eccentric movement. The swing rod 19 is driven to swing up and down through the cooperation of the ball sleeve 24 and the ball head 22, so that the laser head 10 swings along the forward direction to achieve swing laser cutting. The two eccentric columns 21 are staggered 180° around the axial direction of the shaft body 8, so that when the swing rod 19 swings, the two connecting rods 23 can change with the state of the swing rod 19. Through the cooperation of the ball head 22 and the ball sleeve 24 and the axial sliding of the ball head 22 on the swing rod 19, the displacement deviation generated when the connecting rod 23 drives the swing rod 19 to swing can be compensated.

[0039] During the specific implementation, the guide wheel 7 and the positioning wheel 9 are pressed against the workpiece to stably support the laser head 10 above the weld, and the welding wire is pulled out from the reel 17 and passes through the lower edges of the two guide wheels 7 in turn, and the welding wire is pressed through the annular groove 16 to make the welding wire fit the weld. The end of the welding wire is located at the lower end of the laser head 10, and the mounting frame 5 is pushed along the direction of the weld. The guide wheel 7 rotates, presses the welding wire, and draws the welding wire out of the reel 17, so that the welding wire always keeps a synchronized state with the laser head 10, realizes automatic wire drawing, and reduces the laser cutting operation. The difficulty of the positioning wheel 9 is that the shaft body 8 rotates, the eccentric column 21 makes an eccentric movement, the connecting rod 23 moves up and down, and the swing rod 19 is driven to swing up and down through the cooperation of the ball sleeve 24 and the ball head 22, so that the laser head 10 makes a swinging motion along the forward direction, and the swinging laser cutting is realized, so that the energy of the laser head 10 is avoided from being too concentrated at the weld, the heat input to the weld is low, it is not easy to overburn, and the risk of weld nodules is reduced, which is conducive to improving the uniformity of the weld transparency and the laser cutting quality during laser cutting, so that the weld forms a beautiful fish scale shape

[0040] A handle 11 is also hinged on the mounting frame 5, and a push switch 12 corresponding to the handle 11 is arranged on the mounting frame 5. When the handle 11 is squeezed, the handle 11 presses the push switch 12 to activate the push switch 12. The push switch 12 is electrically connected to the laser head 10. When the push switch 12 is activated, the laser head 10 starts to work and laser cuts the workpiece.

[0041] Reference Figure 8 The laser head 10 includes a tungsten needle 25 and an argon hood 26 sleeved on the outside of the tungsten needle 25. The tungsten needle 25 generates heat under the action of electric current to melt the welding wire to achieve the purpose of laser cutting. The argon hood 26 can gather and output argon gas. Argon gas is used as a protective gas to discharge the air around the laser cutting point of the tungsten needle 25, thereby reducing the risk of oxidation of the welding point during laser cutting, reducing the situation of oxidation and blackening during laser cutting, and reducing the generation of welding slag, which is beneficial to improving the quality of laser cutting. An air inlet is provided on the side wall of the argon hood 26, and an argon storage bottle 27 is provided under the workbench 3. The argon storage bottle 27 is connected to the air inlet through a conduit. The argon storage bottle 27 is a pressure bottle, and argon gas can be input from the air inlet into the argon hood 26 through a conduit to protect laser cutting.

[0042] Reference Figure 8 A columnar cavity is provided in the argon hood 26, the air inlet is connected to the columnar cavity, the bottom end of the columnar cavity is connected to the exhaust end of the argon hood 26, the columnar cavity serves as a transition chamber for argon input, when argon is input, it first enters the columnar cavity, a sealing block 28 is provided in the columnar cavity for sealing and sliding, when the sealing block 28 moves to the top of the air inlet, argon is input into the columnar cavity and discharged from the exhaust end of the argon hood 26, for laser cutting protection, when the sealing block 28 is located below the air inlet, the sealing block 28 isolates the exhaust end of the argon hood 26 from the columnar cavity, so that the argon cannot be discharged, a spring 30 is provided between the sealing block 28 and the columnar cavity, the sealing block 28 is connected to the handle 11 by a connecting rope 29, and when the handle 1 is pinched, the sealing block 28 is connected to the handle 11 by a connecting rope 29. 1, the sealing block 28 is first moved upward by the connecting rope 29 to lengthen the spring 2 30, so that the argon gas is discharged and then the push switch 12 is triggered. When the handle 11 is released, the spring 2 30 contracts and the handle 11 is pulled open, first disconnecting the push switch 12, and as the sealing block 28 is reset, the argon gas is blocked. The argon gas protection is introduced in advance and the argon gas is cut off later, which is beneficial for the environment around the tungsten needle 25 to be in a state of argon protection before the laser head 10 is started, thereby reducing the oxidation blackening during laser cutting, reducing the generation of welding slag, and improving the quality of laser cutting. In addition, the user does not need to manually control the opening and closing of the argon storage bottle 27, which is simple and convenient to use and simplifies the operating steps of laser cutting.

[0043] The specific working principle of the present invention is as follows:

[0044] When in use, the guide wheel 7 and the positioning wheel 9 are pressed against the workpiece, so that the laser head 10 is stably supported above the weld, the welding wire is wound on the reel 17, one end of the welding wire is passed through the lower edge of the guide wheel 7, so that the end of the welding wire is located below the tungsten needle 25 of the laser head 10, and the welding wire is pressed through the annular groove 16 to fit the welding wire at the weld;

[0045] The handle 11 is pinched and the sealing block 28 is moved upward through the connecting rope 29, and the spring 2 30 is stretched to discharge the argon gas. Then, the handle 11 presses the push switch 12 to start the laser head 10 and perform laser cutting.

[0046] The mounting frame 5 is pushed along the direction of the weld, and the guide wheel 7 rotates, which presses the welding wire and draws the welding wire from the reel 17, so that the welding wire always keeps the state of synchronization with the laser head 10. The positioning wheel 9 rotates to drive the shaft body 8 to rotate, drive the eccentric column 21 to make an eccentric movement, drive the connecting rod 23 to move up and down, and drive the swing rod 19 to swing up and down through the cooperation of the ball sleeve 24 and the ball head 22, so that the laser head 10 makes a swinging motion along the forward direction, and realizes swinging laser cutting;

[0047] After the laser cutting is completed, the handle 11 is released, the spring 2 30 contracts, the handle 11 is pulled open, the push switch 12 is disconnected first, and as the sealing block 28 is reset, the argon gas is blocked. The argon gas protection is introduced in advance and the argon gas is cut off later, which is beneficial for the environment around the tungsten needle 25 to be in an argon protection state before the laser head 10 is started, thereby reducing the oxidation blackening during laser cutting and reducing the generation of welding slag.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fiber laser pipe joining machine, comprising a workpiece fixing component (1) and a laser cutting component (2), characterized in that: The workpiece fixing assembly (1) comprises a workbench (3), a rotating table (4) is rotatably arranged on the workbench (3), and a positioning mechanism for vertically positioning two workpieces is arranged on the rotating table (4); The laser cutting assembly (2) comprises a mounting frame (5), a bracket being fixedly arranged on a side wall of the mounting frame (5), a reel (17) around which a welding wire is wound being rotatably arranged on the bracket, a wheel frame (6) being rotatably arranged at one end of the mounting frame (5) close to the reel (17) and being parallel to the plane where the mounting frame (5) is located, two wire wheels (7) being rotatably arranged on the wheel frame (6), and a shaft body (8) being rotatably arranged at the other end of the mounting frame (5) and being perpendicular to the plane where the mounting frame (5) is located, the shaft body (8) being rotatably arranged. ) are fixedly provided with positioning wheels (9) at both ends, a mounting rod (18) is rotatably provided on the mounting frame (5), a laser head (10) is fixedly installed at the middle position of the mounting rod (18), a reciprocating swing mechanism is provided between the shaft (8) and the mounting rod (18), a handle (11) is hingedly connected to the mounting frame (5), a push-type switch (12) corresponding to the handle (11) is provided on the mounting frame (5), and the push-type switch (12) is electrically connected to the laser head (10).

2. The optical fiber laser pipe taking over machine according to claim 1, characterized in that: The positioning mechanism comprises two symmetrically arranged clamping blocks (13) slidably arranged on the rotating table (4), the rotating table (4) is provided with two radially arranged sliding grooves, the clamping blocks (13) are slidably connected to the sliding grooves, and a spring (14) is arranged between the clamping blocks (13) and the inner wall of the sliding groove.

3. The optical fiber laser pipe taking over machine according to claim 2, characterized in that: A convex-shaped clamping groove (15) is provided on one side of the two clamping blocks (13) facing each other, and the width of the clamping groove (15) is consistent with the thickness of the workpiece.

4. The optical fiber laser pipe taking over machine according to claim 1, characterized in that: The guide wheel (7) is arranged in a spindle shape, and an annular groove (16) is provided on the outer edge of the guide wheel (7).

5. The optical fiber laser pipe taking over machine according to claim 4, characterized in that: The cross section of the annular groove (16) is semicircular, and the inner wall of the annular groove (16) is rough.

6. The optical fiber laser pipe taking over machine according to claim 1, characterized in that: The positioning wheel (9) is arranged in a frustum shape, and the frustum inclination angle of the positioning wheel (9) is 45°.

7. The optical fiber laser pipe connecting machine according to claim 1, characterized in that: The reciprocating swing mechanism comprises a swing rod (19) radially arranged on the mounting rod (18), a ball head (22) being slidably arranged on the swing rod (19), two groups of eccentric disks (20) being arranged on the shaft body (8), two eccentric disks (20) of the same group being fixedly connected via an eccentric column (21), the two eccentric columns (21) being arranged 180 degrees offset around the axis of the shaft body (8), a connecting rod (23) being rotatably sleeved on the eccentric column (21), and a ball sleeve (24) being fixedly arranged at the top end of the connecting rod (23) and being movably connected to the ball head (22).

8. The optical fiber laser pipe connecting machine according to claim 1, characterized in that: The laser head (10) comprises a tungsten needle (25) and an argon gas hood (26) sleeved outside the tungsten needle (25); a gas inlet is provided on a side wall of the argon gas hood (26); an argon gas storage bottle (27) is provided below the workbench (3); and the argon gas storage bottle (27) is connected to the gas inlet via a conduit.

9. The optical fiber laser pipe taking over machine according to claim 8, characterized in that: A columnar cavity is provided in the argon hood (26), the air inlet is connected to the columnar cavity, the bottom end of the columnar cavity is connected to the exhaust end of the argon hood (26), a sealing block (28) is provided in the columnar cavity for sealing and sliding, a spring 2 (30) is provided between the sealing block (28) and the columnar cavity, and the sealing block (28) is connected to the handle (11) via a connecting rope (29).

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