Automatic laser welding machine

Abstract

The automatic laser welding machine comprises a workbench, pipe fitting feeding mechanisms are installed at the two ends of the top of the workbench, and each pipe fitting feeding mechanism comprises a storage part and a feeding part; a feeding carrying mechanism is installed at the top of the workbench and at the ends, close to each other, of the pipe fitting feeding mechanisms at the two ends. Laser welding mechanisms are mounted at the tops of the feeding carrying mechanisms on the two sides. An auxiliary welding mechanism is installed on the top of the workbench and located below the laser welding mechanism. The inner side of the workbench is located below the auxiliary welding mechanism and used for discharging, carrying and collecting. The whole welding process is high in automation degree, feeding and discharging of the pipe fittings are completed through a mechanical device, so that the labor intensity of workers is greatly reduced, workers can be protected, meanwhile, welding work is not affected during feeding and discharging of the pipe fittings, the welding efficiency is greatly improved, the product yield is high, the welding quality is good, the yield is high, and the production cost is low. And the welding process is high in consistency.

Description

Technical Field

[0001] The invention relates to the technical field of pipe laser welding, and in particular to an automatic laser welding machine. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It fuses two workpieces together using a laser beam. It is a new type of welding method that can achieve spot welding, butt welding, lap welding, seal welding, etc. It has a high aspect ratio, a small weld width, a small heat-affected zone, small deformation, fast welding speed, a smooth and beautiful weld, no post-welding treatment or only simple treatment, high weld quality, no pores, can be precisely controlled, has a small focused spot, high positioning accuracy, and is easy to automate.

[0003] In the laser welding of pipe fittings, the commonly used pipe laser welding machine generally includes a machine body, on which a laser welding mechanism and a pipe clamping mechanism are installed. The existing pipe laser welding machine generally clamps one end of the pipe fitting by a three-jaw chuck and drives the pipe fitting to rotate during the welding process.

[0004] In the workstation structure combined by the existing pipe laser welding machine, there are still welding equipment with fewer workstations, while the equipment with more workstations still needs to manually complete the loading, disassembly, and unloading of pipes. Therefore, during the welding process, extra time will be spent on the loading, installation, positioning, unloading, and unloading of pipes, which will lead to too long intervals between pipe welding work, and ultimately lead to too low welding efficiency and low yield of some traditional laser welding machines. In the process of manual installation of pipe fittings, the traditional clamping structure needs to be tightened by manpower to complete the clamping work, which makes the disassembly work more laborious and time-consuming. Finally, in the process of manual unloading of pipe fittings, the workers will directly contact the pipe fittings that have just been welded and have not been cooled. If they accidentally touch the welded part, there will be a risk of burns.

[0005] Based on this, technicians in this field have proposed an automated laser welding machine, which provides a new solution to the above technical problems. Summary of the invention

[0006] Based on this, it is necessary to provide an automated laser welding machine to address the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The automatic laser welding machine specifically includes a workbench, with pipe feeding mechanisms installed at both ends of the top of the workbench for loading and preparing pipes, and the pipe feeding mechanism includes a storage part and a feeding part; a loading and conveying mechanism is installed at the top of the workbench and at one end of the pipe feeding mechanisms at both ends close to each other, for loading and conveying pipes to be welded; laser welding mechanisms are installed on the tops of the feeding and conveying mechanisms on both sides for laser welding of pipes; an auxiliary welding mechanism is installed on the top of the workbench and below the laser welding mechanism; and an inner side of the workbench and below the auxiliary welding mechanism is used for unloading, conveying and collecting materials.

[0008] Preferably, the material storage part includes a loading box fixedly installed at one end of the top of the workbench, and adjustment plates are provided on both sides of the loading box. The ends of the adjustment plates on both sides that are away from each other are rotatably connected with adjusting screws, and the adjusting screws are threadedly connected to the loading box, and the adjustment plates are slidably connected to the loading box. A drop hopper is provided at the bottom of the ends of the loading boxes at both ends that are close to each other.

[0009] The lifting of the ...

[0010] Preferably, the loading and conveying mechanism includes a conveying mounting frame fixed on the top of the workbench and located at the end of the transition support block away from the loading box, a horizontal conveying cylinder is installed at one end of the conveying mounting frame, a conveying mounting plate is fixed at the output end of the horizontal conveying cylinder, the conveying mounting plate is slidably connected to the conveying mounting frame, vertical conveying cylinders are installed on the sides of the conveying mounting plates away from each other, and a loading and conveying air claw is installed on one side of the output end of the vertical conveying cylinder.

[0011] Preferably, the laser welding mechanism includes a horizontal displacement driving element mounted on the top of the transport mounting frames on both sides, a welding mounting frame 1 is installed on the output end of the horizontal displacement driving element, a vertical displacement driving element is installed on one side of the welding mounting frame 1 and located between the two transport mounting frames, a welding mounting frame 2 is installed on the output end of the vertical displacement driving element, and a laser welding head is installed on the welding mounting frame 2 for laser welding.

[0012] Preferably, the auxiliary welding mechanism includes a first-stage displacement cylinder relatively installed on both sides of the top of the workbench and located below the laser welding head, the output end of the first-stage displacement cylinder is fixedly connected to a displacement frame, and the displacement frame is slidably connected to the top of the workbench, wherein a rotation drive motor is installed on the displacement frame at one end, and a rotation drive rod is fixedly connected to the output end of the rotation drive motor, and a first positioning rod is rotatably connected to the displacement frame at the other end, and the first positioning rod is colinear with the central axis of the rotation drive rod, and a plurality of guide rods are fixed on the sides of the displacement frames close to each other, and a first mounting plate is slidably connected to the outer sides of the guide rods, and the outer sides of the guide rods and located at the corresponding A spring is sleeved between the first mounting plate and the displacement frame, and two ends of the spring are abutted against the corresponding first mounting plate and the displacement frame, a two-stage displacement cylinder is installed on one side of the first mounting plate, a second mounting plate is fixed to the output end of the two-stage displacement cylinder, the second mounting plate is slidably connected to the top of the workbench, and first connecting rods are fixed on both sides of one end of the second mounting plate close to the same side of the first mounting plate, a second connecting rod is sleeved on the outside of the first connecting rod, the first connecting rod and the second connecting rod are slidably connected, and the second connecting rod is fixed to the first mounting plate on the same side, and the ends of the first connecting rod and the second connecting rod that are away from each other are rotatably connected to a welding support roller.

[0013] Preferably, a downward pressure cylinder is installed on the side where the transport and installation plates on both sides are close to each other, and both sides of the bottom of the output end of the downward pressure cylinder are rotatably connected to limit rollers.

[0014] Preferably, a vertical material stripping displacement cylinder is installed on the second welding mounting frame and located on one side of the laser welding head, and a material stripping grabbing cylinder is installed on the output end of the vertical material stripping displacement cylinder.

[0015] Preferably, a material discharge port is provided on the workbench and below the laser welding head, a material discharge hopper is fixed on the inner side of the workbench and below the material discharge port, a material discharge mounting frame is fixedly installed on the inner side of the workbench and below the material discharge hopper, a material discharge displacement cylinder is installed at the bottom of the material discharge mounting frame, a material discharge displacement frame is slidably connected to the top of the material discharge mounting frame and below the material discharge hopper, the output end of the material discharge displacement cylinder is fixedly connected to the material discharge displacement frame, a plurality of groups of adjacently arranged material discharge support rollers are rotatably connected on the material discharge displacement frame and below the material discharge hopper, for supporting the welded pipe fittings, a material discharge push plate is fixed on the material discharge displacement frame and on one side of the material discharge support roller, and positioning air cylinders are installed on both sides of the material discharge displacement frame. Cylinder, the output end of the positioning cylinder is fixed with a second positioning rod, the second positioning rod is slidably connected with the unloading displacement frame, the second positioning rod is located above between the two adjacent unloading support rollers, and an unloading support plate is fixed on the top of the unloading mounting frame and on both sides of the inner side of the unloading displacement frame, the unloading displacement frame is slidably connected with the unloading support plate, a rising table is provided at one end of the top of the unloading support plate close to the unloading support roller, a descending table is provided at one end of the top of the unloading support plate away from the unloading support roller, a landing groove is provided on the end of the descending table away from the unloading support roller, a jacking cylinder is installed at the bottom of the unloading mounting frame and below the landing groove, and jacking rods are fixed on both sides of the output end of the jacking cylinder.

[0016] Preferably, the top of the unloading mounting frame is located at the unloading supporting plate and is rotatably connected to a unloading rail 1 at one end away from the unloading supporting roller, and the unloading rail 1 is rotatably connected to a plurality of stripping teeth at one end close to the jacking rod, and the stripping teeth are provided with a limiting foot at one end close to the unloading rail 1 for limiting the rotation of the stripping teeth. The bottom inner side of the workbench is rotatably connected to an adjusting cylinder, and the output end of the adjusting cylinder is rotatably connected to the unloading rail 1 for limiting the rotation of the stripping teeth.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention loads two pipe fittings to be welded through the pipe feeding mechanisms at both ends, transports the pipe fittings during loading through the feeding and transporting mechanisms, transports the pipe fittings to the auxiliary welding mechanism, and positions them through the auxiliary welding mechanism, so that the two pipe fittings to be welded are positioned under the laser welding head, and laser welding is performed on the pipe fittings through the laser welding mechanism. During welding, the pipe fittings are driven to rotate by the auxiliary welding mechanism to assist the welding work, and then the welded pipe fittings are unloaded and collected by the unloading mechanism. The entire welding process has a high degree of automation, and the loading and unloading of the pipe fittings are completed by mechanical devices, thereby greatly reducing the intensity of manual labor and being able to protect the staff. At the same time, the welding work is not affected when the pipe fittings are loaded and unloaded, thereby greatly improving the welding efficiency, and the product yield is high, and the welding quality is good, the yield rate is high, and the welding process consistency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme of the present invention, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the axial structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the axial structure of the pipe feeding mechanism of the present invention; Figure 5 It is a cross-sectional side view structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the cross-sectional axial structure of the present invention; Figure 7 It is a structural schematic diagram of the material loading and handling mechanism and the auxiliary welding mechanism of the present invention; Figure 8 It is a schematic diagram of the structures of the pipe feeding mechanism, feeding and transporting mechanism, laser welding mechanism and auxiliary welding mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the material loading and handling mechanism of the present invention; Fig.10 It is a structural schematic diagram of the laser welding mechanism of the present invention; Fig.11 The structure diagram of the auxiliary welding mechanism of the present invention is shown in FIG. Figure 1 ; Fig.12 The structure diagram of the auxiliary welding mechanism of the present invention is shown in FIG. Figure 2 ; Fig.13 It is a structural schematic diagram of the laser welding mechanism, the auxiliary welding mechanism and the blanking mechanism of the present invention; Fig.14 It is a structural schematic diagram of the auxiliary welding mechanism and the blanking mechanism of the present invention; Fig.15 It is a structural schematic diagram of the material unloading mechanism of the present invention; Fig.16 It is a structural schematic diagram of the feeding track 1, the feeding teeth and the limiting feet of the present invention.

[0020] The markings in the figure are as follows: 100, pipe feeding mechanism; 200, feeding and transporting mechanism; 300, laser welding mechanism; 400, auxiliary welding mechanism; 500, unloading mechanism; 600, workbench; 101, feeding box; 102, adjusting plate; 103, adjusting screw; 104, drop hopper; 105, ejector mounting frame; 106, ejector cylinder; 107, ejector rod; 108, first mounting frame; 109, unloading plate; 110, feeding hook plate; 111, transition support block; 112, limit cylinder 1; 113, limit piece 1 ; 114, limit cylinder 2; 115, limit plate 2; 116, connecting frame; 201, transport and installation frame; 202, horizontal transport cylinder; 203, transport and installation plate; 204, vertical transport cylinder; 205, loading and transport claw; 206, down-pressing cylinder; 207, limit roller; 301, horizontal displacement drive element; 302, welding installation frame 1; 303, vertical displacement drive element; 304, welding installation frame 2; 305, laser welding head; 306, vertical stripping displacement cylinder; 307, stripping gripper Take the cylinder; 401, the first displacement cylinder; 402, the displacement frame; 403, the rotation drive motor; 404, the rotation drive rod; 405, the first positioning rod; 406, the first mounting plate; 407, the spring; 408, the guide rod; 409, the second displacement cylinder; 410, the second mounting plate; 411, the first connecting rod; 412, the second connecting rod; 413, the welding support roller; 501, the unloading hopper; 502, the unloading mounting frame; 503, the unloading displacement cylinder; 504, the unloading displacement frame; 505, the unloading support Support roller; 506, unloading push plate; 507, positioning cylinder; 508, second positioning rod; 509, unloading support plate; 510, rising table; 511, descending table; 512, landing groove; 513, lifting cylinder; 514, lifting rod; 515, unloading track one; 516, adjusting cylinder; 517, material shifting tooth; 518, unloading track two; 519, collecting box; 520, unloading handling cylinder; 521, unloading lifting cylinder; 522, unloading air claw; 523, limit foot; 601, unloading port. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] Embodiment 1 Please refer to Figure 1-16 The present invention provides an automatic laser welding machine including a workbench 600. Pipe feeding mechanisms 100 are installed at both ends of the top of the workbench 600 for feeding and preparing pipes. The pipe feeding mechanism 100 includes a storage part and a feeding part. A feeding and transporting mechanism 200 is installed at one end of the pipe feeding mechanism 100 located at both ends of the top of the workbench 600 and close to each other, for feeding and transporting pipes to be welded. Laser welding mechanisms 300 are installed at the top of the feeding and transporting mechanisms 200 on both sides. Used for laser welding of pipe fittings; an auxiliary welding mechanism 400 is installed on the top of the workbench 600 and below the laser welding mechanism 300, which is used to position the pipe fittings to be welded, drive the pipe fittings to be welded to rotate, and loosen the pipe fittings after welding; the inner side of the workbench 600 and below the auxiliary welding mechanism 400 is used for unloading, transportation and collection. Specifically, the two pipe fittings to be welded are loaded through the pipe loading mechanisms 100 at both ends, and the pipe fittings are loaded and transported through the loading and transporting mechanism 200, and the pipe fittings are transported to the auxiliary welding mechanism 400, and are positioned by the auxiliary welding mechanism 400 so that the two pipe fittings are welded. A pipe to be welded is positioned under the laser welding head 305, and the pipe is laser welded by the laser welding mechanism 300. During welding, the pipe is driven to rotate by the auxiliary welding mechanism 400 to assist the welding work, and then the welded pipe is unloaded and collected by the unloading mechanism 500. The whole welding process has a high degree of automation, and the loading and unloading of the pipe are completed by mechanical devices, which greatly reduces the labor intensity and can protect the staff. At the same time, the welding work is not affected when the pipe is unloaded, which greatly improves the welding efficiency, has a high output rate, and has a good welding quality, a high yield rate, and a high consistency of the welding process.

[0023] Please refer to Figure 4-6The material storage part includes a loading box 101 fixedly installed at one end of the top of the workbench 600, and adjustment plates 102 are arranged on both sides of the loading box 101. The ends of the adjustment plates 102 on both sides that are away from each other are rotatably connected with adjustment screws 103. The adjustment screws 103 are threadedly connected to the loading box 101, and the adjustment plates 102 are slidably connected to the loading box 101. A drop hopper 104 is arranged at the bottom of the ends of the loading boxes 101 at both ends that are close to each other. When in use, the pipe fittings to be welded are pre-placed between the two adjustment plates 102 and positioned by the adjustment plates 102. In actual use, the two adjustment plates 102 should not press the pipe fittings tightly, and a moving gap should be left between the pipe fittings so that the pipe fittings can move under the action of their own weight. The setting of the section screw 103 makes the distance between the two adjustment plates 102 adjustable to accommodate welding between pipes of different lengths. In actual use, a rotating disk should be fixed to the end of the adjusting screw 103 away from the loading box 101. When the spacing between the adjusting plates 102 needs to be adjusted, the corresponding adjusting screw 103 can be driven to rotate by manually rotating the rotating disk, thereby driving the corresponding adjusting plate 102 to perform displacement movement to adjust the distance between the two adjusting plates 102. It should also be noted that in actual use, a guide shaft is fixed to the side of the adjusting plate 102 close to the adjusting screw 103, and the adjusting plate 102 is slidably connected to the loading box 101 via the guide shaft, and the movement of the adjusting plate 102 is guided by the guide shaft.

[0024] Please refer to Figure 4-6The feeding part includes a feeding mounting frame 105 fixed at the bottom of the workbench 600 and located below the blanking hopper 104, a feeding cylinder 106 is installed at the bottom of the feeding mounting frame 105, the output end of the feeding cylinder 106 passes through the feeding mounting frame 105 and is fixed with a connecting frame 116, the connecting frame 116 is slidably connected to the feeding mounting frame 105, and a feeding rod 107 is detachably installed at both ends of the connecting frame 116, the feeding rod 107 is slidably connected to the inner side of the blanking hopper 104, a first mounting frame 108 is fixedly installed on the top of the workbench 600 and located above the blanking hopper 104, a feeding hook plate 110 is rotatably connected on the first mounting frame 108 and located above the feeding rod 107, and a fixed connecting plate 110 is fixed on the first mounting frame 108 and located on both sides of the two feeding hook plates 110 A blanking plate 109 is connected, a transition support block 111 is installed on the top of the workbench 600 and at the end of the blanking plate 109, a limiting cylinder 112 is installed on the top of the workbench 600 and at the end of the transition support block 111 away from the blanking plate 109, and a limiting plate 113 is fixed on the output end of the limiting cylinder 112, and a limiting cylinder 114 is installed on the top of the workbench 600 and below between the blanking plates 109 on both sides, and a limiting plate 115 is fixed on the output end of the limiting cylinder 114. Specifically, the bottom of the loading box 101 is tilted toward the direction of the blanking hopper 104. When in use, the staff places multiple pipe fittings to be welded between the adjusting plates 102, and the pipe fittings near the top of the adjusting screw 103 will slide into the blanking hopper. When the pipe is needed to be loaded, the loading cylinder 106 starts to drive the connecting frame 116 to rise, thereby driving the loading rod 107 to rise, so that the pipe supported by the loading rod 107 is transported upward, and the loading hook plate 110 includes an upper rod and a lower hook, and the top of the hook is a downward inclined surface. When the pipe contacts the loading hook plate 110, it will first be pushed to the side. When the pipe moves to the top of the hook at the bottom of the loading hook plate 110, the loading hook plate 110 will perform a short reset rotation under the action of its own weight, so that the upper rod supports the pipe and the lower hook hooks the pipe. Then the loading cylinder 106 starts again to drive the loading rod 107 to descend. At this time, Under the action of 10, the ejector rod 107 will first separate from the pipe fitting, and then the pipe fitting will roll along the top inclined surface of the hook under its own weight and roll onto the unloading plate 109. At this time, the limit cylinder 114 will start to drive the limit plate 115 to rise and block the corresponding pipe fitting. This is the transition position for loading the pipe fittings. During loading, there is always a pipe fitting blocked here to wait for the next loading. When it is necessary to load the pipe fittings at the transition point, the limit cylinder 114 will start to drive the limit plate 115 to descend. At this time, the pipe fitting previously blocked by the limit plate 115 continues to roll down along the unloading plate 109 to the top of the transition support block 111. At the same time, the limit cylinder 112 will start to drive the limit plate 113 to rise to block the pipe fitting and position it for loading and transportation.

[0025] Please refer to Fig. 9 The loading and transporting mechanism 200 includes a transport mounting frame 201 fixed on the top of the workbench 600 and located at the end of the transition support block 111 away from the loading box 101. A horizontal transport cylinder 202 is installed at one end of the transport mounting frame 201. A transport mounting plate 203 is fixed to the output end of the horizontal transport cylinder 202. The transport mounting plate 203 is slidably connected to the transport mounting frame 201. A vertical transport cylinder 204 is installed on the side of the transport mounting plates 203 on both sides away from each other. A loading and transporting claw 205 is installed on one side of the output end of the vertical transport cylinder 204. Specifically, when it is necessary to move the pipe fittings located on the top of the transition support block 111, When loading and transporting, the horizontal transport cylinder 202 starts to drive the transport mounting plate 203 to move toward the transition support block 111. When the loading and transporting claw 205 moves to the top of the pipe fitting on the transition support block 111, the vertical transport cylinder 204 starts to drive the loading and transporting claw 205 to descend, and clamps the pipe fitting through the loading and transporting claw 205. Then the vertical transport cylinder 204 starts again to drive the loading and transporting claw 205 and the pipe fitting to rise. At the same time, the horizontal transport cylinder 202 starts to drive the loading and transporting claw 205 and the pipe fitting to move in the direction away from the transition support block 111 to the desired position.

[0026] Please refer to Fig.10 The laser welding mechanism 300 includes a horizontal displacement driving element 301 mounted on the top of the transport mounting frames 201 on both sides, a welding mounting frame 1 302 is mounted on the output end of the horizontal displacement driving element 301, a vertical displacement driving element 303 is mounted on one side of the welding mounting frame 1 302 and located between the two transport mounting frames 201, a welding mounting frame 2 304 is mounted on the output end of the vertical displacement driving element 303, a laser welding head 305 is mounted on the welding mounting frame 2 304 for laser welding, specifically, when welding is required, the pipe fittings can be welded by the laser welding head 305, the arrangement of the horizontal displacement driving element 301 and the vertical displacement driving element 303 facilitates the position adjustment of the laser welding head 305, the start of the horizontal displacement driving element 301 can drive the laser welding head 305 to adjust the displacement in the horizontal direction, the start of the welding mounting frame 2 304 can drive the laser welding head 305 to adjust the displacement in the vertical direction.

[0027] Please refer to Figure 11-12The auxiliary welding mechanism 400 includes a first-stage displacement cylinder 401 relatively installed on both sides of the top of the workbench 600 and located below the laser welding head 305. The output end of the first-stage displacement cylinder 401 is fixedly connected to a displacement frame 402, and the displacement frame 402 is slidably connected to the top of the workbench 600. A rotation drive motor 403 is installed on the displacement frame 402 at one end, and a rotation drive rod 404 is fixedly connected to the output end of the rotation drive motor 403. A first positioning rod 405 is rotatably connected to the displacement frame 402 at the other end. The first positioning rod 405 is colinear with the central axis of the rotation drive rod 404. A plurality of guide rods 408 are fixed on the side of the displacement frames 402 on both sides close to each other, and the outer sides of the plurality of guide rods 408 are slidably connected to the first installation The guide rod 408 has a spring 407 sleeved on the outside and located between the corresponding first mounting plate 406 and the displacement frame 402. Both ends of the spring 407 are in contact with the corresponding first mounting plate 406 and the displacement frame 402. A secondary displacement cylinder 409 is installed on one side of the first mounting plate 406. A second mounting plate 410 is fixed to the output end of the secondary displacement cylinder 409. The second mounting plate 410 is slidably connected to the top of the workbench 600. The second mounting plate 410 is close to the first mounting plate 406 on the same side. The second connecting rod 411 is fixed on both sides of one end. The second connecting rod 412 is sleeved on the outside of the first connecting rod 411. The first connecting rod 411 is slidably connected to the second connecting rod 412. The second connecting rod 412 is fixed to the first mounting plate 406 on the same side. On the plate 406, the ends of the first connecting rod 411 and the second connecting rod 412 that are away from each other are rotatably connected to the welding support roller 413. Specifically, when loading, the horizontal transport cylinders 202 on both sides transport the loading and transporting claws 205 that grab the pipe fittings to the top of the welding support roller 413, and then the vertical transport cylinder 204 is started to drive the pipe fittings to descend, and the pipe fittings are placed between the corresponding grouped welding support rollers 413. Then the vertical transport cylinder 204 is started to drive the loading and transporting claws 205 to release the pipe fittings and then rise, and then the first-level displacement cylinder 401 is started to drive the displacement frames 402 on both sides to move in a direction close to each other, and at the same time, the two second-level displacement cylinders 409 are started to drive the second mounting plates 410 on both sides to move in a direction away from each other. , so that the pipe extends out of the second mounting plate 410. When the second mounting plate 410 moves, the rotating drive rods 404 and the first positioning rods 405 on both sides will press against the corresponding pipes to limit them to a certain extent, so that the first-stage displacement cylinder 401 drives the pipes on the welding support rollers 413 on both sides to approach and abut against each other. At the same time, the first-stage displacement cylinder 401 continues to drive the displacement frame 402 to move. At this time, since the two pipes abut against each other, the displacement frame 402 will press the two pipes to make the welding parts better connected. At the same time, when the displacement frame 402 continues to move, due to the setting of the guide rods 408 and the second-stage displacement cylinder 409, the displacement frames 402 on both sides and the first mounting plate 406 will be relatively displaced to reduce the distance between the two.At this time, the first positioning rod 405 and the rotating driving rod 404 will press against the two ends of the welding pipe fitting, and then the pipe fitting can be welded by the laser welding head 305. At the same time, the rotating driving motor 403 starts to drive the rotating driving rod 404 to rotate, and then drives the pipe fitting to rotate, so as to weld the pipe fitting around one circumference.

[0028] Embodiment 2 Please refer to Fig. 9 In the above-mentioned embodiment 1, when the two pipe fittings are pressed and connected, since the pipe fittings to be welded are only subjected to the pressing force from both ends, the uneven joint may cause them to be slightly warped or offset, which may affect the welding effect. Therefore, in this embodiment, based on the embodiment 1, the side of the transport and mounting plates 203 on both sides that are close to each other is equipped with a downward pressure cylinder 206, and the bottom of the output end of the downward pressure cylinder 206 is rotatably connected to the limiting rollers 207 on both sides. When the pipe fittings on both sides abut against each other under the action of the first-level displacement cylinder 401, the downward pressure cylinder 206 starts to drive the limiting rollers 207 to descend, and the pipe fittings are pressed in the radial direction through the limiting rollers 207, so that the two pipe fittings are better positioned for docking, thereby improving the welding effect.

[0029] Please refer to Fig.10 A vertical stripping displacement cylinder 306 is installed on the second welding mounting frame 304 and on one side of the laser welding head 305, and a stripping grabbing cylinder 307 is installed on the output end of the vertical stripping displacement cylinder 306. When welding is completed, the vertical stripping displacement cylinder 306 is started to drive the stripping grabbing cylinder 307 to descend, and the welded pipe is clamped by the stripping grabbing cylinder 307. Then the first-stage displacement cylinder 401 is started to drive the rotating drive rod 404 and the first positioning rod 405 to disengage from the inner side of the pipe, thereby completing the loosening of the pipe.

[0030] Please refer to Figure 13-15A material discharge port 601 is provided on the workbench 600 and below the laser welding head 305, a material discharge hopper 501 is fixedly provided on the inner side of the workbench 600 and below the material discharge port 601, a material discharge mounting frame 502 is fixedly provided on the inner side of the workbench 600 and below the material discharge hopper 501, a material discharge displacement cylinder 503 is provided at the bottom of the material discharge mounting frame 502, a material discharge displacement frame 504 is slidably connected to the top of the material discharge mounting frame 502 and below the material discharge hopper 501, an output end of the material discharge displacement cylinder 503 is fixedly connected to the material discharge displacement frame 504, a plurality of adjacent material discharge support rollers 505 are rotatably connected to the material discharge displacement frame 504 and below the material discharge hopper 501, and are used to support the welded pipe fittings, and the material discharge displacement cylinder 503 is provided on the top of the material discharge mounting frame 502 and below the material discharge hopper 501, and is ... A material unloading push plate 506 is fixed on the frame 504 and located on one side of the material unloading support roller 505, positioning cylinders 507 are installed on both sides of the material unloading displacement frame 504, and a second positioning rod 508 is fixed to the output end of the positioning cylinder 507, and the second positioning rod 508 is slidably connected to the material unloading displacement frame 504, and the second positioning rod 508 is located above between two adjacent material unloading support rollers 505. A material unloading support plate 509 is fixed on the top of the material unloading mounting frame 502 and located on both sides of the inner side of the material unloading displacement frame 504, and the material unloading displacement frame 504 is slidably connected to the material unloading support plate 509, and a rising table 510 is provided on the top of the material unloading support plate 509 close to the material unloading support roller 505, and the top of the material unloading support plate 509 is away from the material unloading support roller 505. One end of the material stripping frame 502 is provided with a descending table 511, and the end of the descending table 511 away from the material stripping support roller 505 is provided with a landing groove 512. A lifting cylinder 513 is installed at the bottom of the material stripping mounting frame 502 and below the landing groove 512. Lifting rods 514 are fixed on both sides of the output end of the lifting cylinder 513. Specifically, when the pipe fitting is welded and separated from the rotating drive rod 404 and the first positioning rod 405, the vertical material stripping displacement cylinder 306 drives the material stripping grabbing cylinder 307 to descend, and the material stripping grabbing cylinder 307 releases the pipe fitting, so that it falls into the material stripping hopper 501 and falls onto the top of the material stripping support roller 505 through the material stripping hopper 501. Subsequently, the positioning cylinders 507 on both sides are started to drive the second positioning rods 508 to approach each other, and The pipe fitting is positioned and centered by the second positioning rod 508, and then the unloading displacement cylinder 503 is started to drive the unloading displacement frame 504 to move. When the unloading displacement frame 504 moves, the pipe fitting and the unloading support plate 509 move relative to each other. During the movement, the pipe fitting first contacts the rising table 510, and at the same time, the rising table 510 produces a certain resistance to it. At this time, the unloading displacement frame 504 continues to move, and the pipe fitting rises along the rising table 510 and separates from the unloading support roller 505 under the push of the unloading push plate 506. Then the unloading displacement frame 504 continues to move, and the pipe fitting moves from the rising table 510 to the descending table 511, and rolls down along the descending table 511 to the inside of the landing groove 512 to complete the initial unloading.

[0031] Please refer to Figure 13-15, the top of the unloading mounting frame 502 and located at the unloading support plate 509 away from the unloading support roller 505 is rotatably connected with a unloading track 515, and the unloading track 515 is rotatably connected with a plurality of material-shifting teeth 517 at one end close to the lifting rod 514. The material-shifting teeth 517 are provided with a limiting foot 523 at one end close to the unloading track 515, which is used to limit the rotation of the material-shifting teeth 517. The bottom of the inner side of the workbench 600 is rotatably connected with an adjusting cylinder 516, and the output end of the adjusting cylinder 516 is rotatably connected with the unloading track 515. The inner side of the workbench 600 and located at the end of the unloading track 515 away from the lifting rod 514 is equipped with an unloading track 2 518 A collecting box 519 is placed on the inner side of the workbench 600 and located at the end of the unloading track 518 away from the unloading track 1 515. A unloading and transporting cylinder 520 is installed on the top of the inner side of the workbench 600 and located between the unloading track 518 and the collecting box 519. A unloading and transporting cylinder 520 is installed on the output end of the unloading and transporting cylinder 520. A unloading and lifting cylinder 521 is installed on the output end of the unloading and lifting cylinder 521. A unloading claw 522 is installed on the output end of the unloading and lifting cylinder 521. Specifically, when the pipe fitting moves to the inner side of the landing groove 512, the lifting cylinder 513 is started to drive the lifting rod 514 to rise, and the pipe fitting inside the landing groove 512 is lifted up by the lifting rod 514. During the lifting process, the pipe fitting first contacts the material-dipping tooth 517. Under the action of the pipe fitting, the material-dipping tooth 517 rotates upward, thereby not affecting the upward movement of the pipe fitting. When the pipe fitting moves above the material-dipping tooth 517, the lifting cylinder 513 is started again to drive the lifting rod 514 and the pipe fitting to descend. At this time, the material-dipping tooth 517 is reset under its own weight, and after the reset, the limit foot 523 abuts against the unloading track 515 so that the material-dipping tooth 517 can no longer rotate downward to position it. At this time, when the lifting rod 514 is descending with the pipe fitting, the material-dipping tooth 517 will block the pipe fitting so that it is gradually separated from the lifting rod 514. When the pipe fitting and the lifting rod 514 are separated, the material-dipping tooth 517 will stop the pipe fitting from the lifting rod 514. When completely separated, the pipe fittings will roll along the unloading track 1 515 to the top of the unloading track 2 518, and roll along the unloading track 2 518 to the bottom position to be grasped, and then the unloading transport cylinder 520 is started to drive the unloading lifting cylinder 521 and the unloading claw 522 to move to the top of the pipe fittings on the top of the unloading track 2 518, and then the unloading lifting cylinder 521 is started to drive the unloading claw 522 to descend and grab the pipe fittings on the unloading track 2 518 through the unloading claw 522, and then the unloading transport cylinder 520, the unloading lifting cylinder 521, and the unloading claw 522 are started again to place the pipe fittings in order on the inside of the collection box 519 for unified collection.

[0032] The working principle of an automatic laser welding machine provided by the present invention is: When using the laser welding machine, the staff first places a plurality of pipes to be welded between the adjustment plates 102. When the pipes need to be loaded, the ejection cylinder 106 is started to drive the ejection rod 107 to rise, so that the pipes supported by the ejection rod 107 are transported upward, and then rolled onto the unloading plate 109 under the action of the loading hook plate 110 and rolled down along the unloading plate 109 to the top of the transition support block 111. At the same time, the limit cylinder 112 is started to drive the limit plate 113 to rise to block the pipes and position them for loading and transportation; Then the horizontal transport cylinder 202 is started to drive the transport mounting plate 203 to move toward the transition support block 111. When the loading and transporting claw 205 moves to the top of the pipe on the transition support block 111, the vertical transport cylinder 204 is started to drive the loading and transporting claw 205 to descend, and clamp the pipe by the loading and transporting claw 205. Then the vertical transport cylinder 204 is started again to drive the pipe to move above the welding support roller 413. Then the vertical transport cylinder 204 is started to drive the pipe to descend and place the pipe between the corresponding grouped welding support rollers 413. Then the first-stage displacement cylinder 4 01 starts to drive the displacement racks 402 on both sides to move towards each other, and at the same time, the two secondary displacement cylinders 409 start to drive the second mounting plates 410 on both sides to move away from each other so that the pipes on the welding support rollers 413 are close to each other and abut against each other, and at the same time, the downward pressure cylinder 206 starts to drive the limiting roller 207 to descend, and the pipe is pressed in the radial direction by the limiting roller 207, and then the pipe can be welded by the laser welding head 305, and at the same time, the rotary drive motor 403 starts to drive the rotary drive rod 404 to rotate, thereby driving the pipe to rotate, so as to weld one circle of the pipe; After the pipe is welded and separated from the rotating drive rod 404 and the first positioning rod 405, the vertical stripping displacement cylinder 306 drives the stripping grabbing cylinder 307 to descend, and the stripping grabbing cylinder 307 releases the pipe, causing it to fall into the discharge hopper 501, and then falls to the top of the discharge support roller 505 through the discharge hopper 501, and then the positioning cylinders 507 on both sides are started to drive the second positioning rod 508 to approach each other, and the pipe is positioned and centered by the second positioning rod 508, and then the material removal displacement cylinder 503 is started to drive the material removal displacement frame 504 to move, so that the pipe is pushed by the material removal push plate 506 to rise along the rising table 510 and separate from the material removal support roller 505, and then the material removal displacement frame 504 continues to move, and the pipe moves from the rising table 510 to the descending table 511, and rolls down along the descending table 511 to the inner side of the landing groove 512, and then the lifting cylinder 513 is started to drive the lifting rod 51 4 rises, and the pipe fitting inside the positioning groove 512 is lifted up by the lifting rod 514, so that it moves to the top of the material-picking tooth 517. At this time, the material-picking tooth 517 is reset under its own weight, and the lifting cylinder 513 is started again to drive the lifting rod 514 and the pipe fitting to descend. The material-picking tooth 517 will block the pipe fitting and gradually separate it from the lifting rod 514. The pipe fitting will roll along the unloading track 1 515 to the position to be grabbed at the bottom of the unloading track 2 518, and then the unloading and moving The transport cylinder 520 is started to drive the unloading lifting cylinder 521 and the unloading air claw 522 to move to the top of the pipe fittings at the top of the unloading track 518, and then the unloading lifting cylinder 521 is started to drive the unloading air claw 522 to descend and grab the pipe fittings on the unloading track 518 through the unloading air claw 522, and then the unloading transport cylinder 520, the unloading lifting cylinder 521, and the unloading air claw 522 are started again to place the pipe fittings in order into the inner side of the collection box 519 for unified collection.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. An automated laser welding machine, characterized in that: The invention comprises a workbench (600), wherein pipe feeding mechanisms (100) are installed at both ends of the top of the workbench (600) for feeding and preparing pipes, and the pipe feeding mechanism (100) comprises a material storage portion and a feeding portion; a feeding and transporting mechanism (200) is installed at the top of the workbench (600) and at one end of the pipe feeding mechanism (100) located at both ends close to each other, for feeding and transporting pipes to be welded; laser welding mechanisms (300) are installed at the top of the feeding and transporting mechanisms (200) on both sides, for laser welding pipes; an auxiliary welding mechanism (400) is installed at the top of the workbench (600) and below the laser welding mechanism (300); and an inner side of the workbench (600) and below the auxiliary welding mechanism (400) is used for unloading, transporting and collecting materials.

2. The automatic laser welding machine according to claim 1, characterized in that: The material storage section comprises a loading box (101) fixedly mounted on one end of the top of the workbench (600), adjustment plates (102) are provided on both sides of the loading box (101), and the ends of the adjustment plates (102) on both sides that are away from each other are rotatably connected with adjustment screws (103), the adjustment screws (103) are threadedly connected to the loading box (101), the adjustment plates (102) are slidably connected to the loading box (101), and the bottoms of the ends of the loading boxes (101) at both ends that are close to each other are provided with drop hoppers (104).

3. The automatic laser welding machine according to claim 2, characterized in that: The loading part comprises a feeding mounting frame (105) fixed to the bottom of the workbench (600) and located below the blanking hopper (104); a feeding cylinder (106) is installed at the bottom of the feeding mounting frame (105); an output end of the feeding cylinder (106) passes through the feeding mounting frame (105) and is fixed with a connecting frame (116); the connecting frame (116) is slidably connected to the feeding mounting frame (105); feeding rods (107) are detachably installed at both ends of the connecting frame (116); the feeding rods (107) are slidably connected to the inner side of the blanking hopper (104); a first mounting frame (108) is fixedly installed on the top of the workbench (600) and located above the blanking hopper (104); the first mounting frame (108) is located on the feeding rod A loading hook plate (110) is rotatably connected to the top of the workbench (107); a loading plate (109) is fixedly connected to the first mounting frame (108) and located on both sides of the two loading hook plates (110); a transition support block (111) is installed on the top of the workbench (600) and located at the end of the loading plate (109); a limiting cylinder one (112) is installed on the top of the workbench (600) and located at the end of the transition support block (111) away from the loading plate (109); a limiting plate one (113) is fixed to the output end of the limiting cylinder one (112); a limiting cylinder two (114) is installed on the top of the workbench (600) and located below between the loading plates (109) on both sides; a limiting plate two (115) is fixed to the output end of the limiting cylinder two (114).

4. The automatic laser welding machine according to claim 3, characterized in that: The loading and transporting mechanism (200) comprises a transport mounting frame (201) fixed on the top of the workbench (600) and located at an end of the transition support block (111) away from the loading box (101); a horizontal transport cylinder (202) is mounted on one end of the transport mounting frame (201); a transport mounting plate (203) is fixed to the output end of the horizontal transport cylinder (202); the transport mounting plate (203) is slidably connected to the transport mounting frame (201); vertical transport cylinders (204) are mounted on the sides of the transport mounting plates (203) away from each other; a loading and transporting air claw (205) is mounted on one side of the output end of the vertical transport cylinder (204).

5. The automatic laser welding machine according to claim 4, characterized in that: The laser welding mechanism (300) comprises a horizontal displacement driving element (301) mounted on the top of the transport mounting frames (201) on both sides, a welding mounting frame 1 (302) being mounted on the output end of the horizontal displacement driving element (301), a vertical displacement driving element (303) being mounted on one side of the welding mounting frame 1 (302) and located between the two transport mounting frames (201), a welding mounting frame 2 (304) being mounted on the output end of the vertical displacement driving element (303), and a laser welding head (305) being mounted on the welding mounting frame 2 (304) for laser welding.

6. The automatic laser welding machine according to claim 5, characterized in that: The auxiliary welding mechanism (400) comprises a first-stage displacement cylinder (401) relatively mounted on both sides of the top of the workbench (600) and located below the laser welding head (305); the output end of the first-stage displacement cylinder (401) is fixedly connected to a displacement frame (402); the displacement frame (402) is slidably connected to the top of the workbench (600); a rotation drive motor (403) is mounted on the displacement frame (402) at one end; the output end of the rotation drive motor (403) is fixedly connected to a rotation drive rod (404); a first positioning rod (405) is rotatably connected to the displacement frame (402) at the other end; the first positioning rod (405) and the central axis of the rotation drive rod (404) are colinear; a plurality of guide rods (408) are fixed to the sides of the displacement frames (402) on both sides close to each other; a first mounting plate (406) is slidably connected to the outer sides of the plurality of guide rods (408); the outer sides of the guide rods (408) and the corresponding first mounting plates (406) are located on the outer sides of the guide rods (408) ) and the displacement frame (402), a spring (407) is sleeved between the two ends of the spring (407) and the corresponding first mounting plate (406) and the displacement frame (402), a two-stage displacement cylinder (409) is installed on one side of the first mounting plate (406), a second mounting plate (410) is fixed to the output end of the two-stage displacement cylinder (409), the second mounting plate (410) is slidably connected to the top of the workbench (600), first connecting rods (411) are fixed on both sides of one end of the second mounting plate (410) close to the first mounting plate (406) on the same side, a second connecting rod (412) is sleeved on the outside of the first connecting rod (411), the first connecting rod (411) and the second connecting rod (412) are slidably connected, the second connecting rod (412) is fixed on the first mounting plate (406) on the same side, and the ends of the first connecting rod (411) and the second connecting rod (412) that are away from each other are rotatably connected to a welding support roller (413).

7. The automatic laser welding machine according to claim 6, characterized in that: A downward pressure cylinder (206) is installed on the side of the transport installation plates (203) on both sides close to each other, and both sides of the bottom of the output end of the downward pressure cylinder (206) are rotatably connected to limit rollers (207).

8. The automatic laser welding machine according to claim 7, characterized in that: A vertical material stripping displacement cylinder (306) is installed on the second welding mounting frame (304) and located on one side of the laser welding head (305), and a material stripping grabbing cylinder (307) is installed on the output end of the vertical material stripping displacement cylinder (306).

9. The automatic laser welding machine according to claim 8, characterized in that: A material discharge port (601) is provided on the workbench (600) and below the laser welding head (305); a material discharge hopper (501) is fixedly provided on the inner side of the workbench (600) and below the material discharge port (601); a material discharge mounting frame (502) is fixedly provided on the inner side of the workbench (600) and below the material discharge hopper (501); a material discharge displacement cylinder (503) is installed at the bottom of the material discharge mounting frame (502); a sliding connection cylinder (503) is provided at the top of the material discharge mounting frame (502) and below the material discharge hopper (501). The material displacing frame (504) is connected to the material displacing cylinder (503), and the output end of the material displacing cylinder (503) is fixedly connected to the material displacing frame (504). A plurality of adjacent material displacing support rollers (505) are rotatably connected on the material displacing frame (504) and located below the material displacing hopper (501), and are used to support the welded pipe fittings. A material displacing push plate (506) is fixed on the material displacing frame (504) and located on one side of the material displacing support rollers (505). Positioning cylinders (507) are installed on both sides of the material displacing frame (504). A second positioning rod (508) is fixed to the output end of the positioning cylinder (507), and the second positioning rod (508) is slidably connected to the material removal displacement frame (504). The second positioning rod (508) is located above between two adjacent material removal support rollers (505). Material removal support plates (509) are fixed to the top of the material removal mounting frame (502) and on both sides of the inner side of the material removal displacement frame (504). The material removal displacement frame (504) is slidably connected to the material removal support plates (509). The material removal support plates (509) A rising table (510) is provided at one end of the top close to the material unloading support roller (505), a descending table (511) is provided at one end of the top of the material unloading support plate (509) away from the material unloading support roller (505), a landing groove (512) is provided at one end of the descending table (511) away from the material unloading support roller (505), a lifting cylinder (513) is installed at the bottom of the material unloading mounting frame (502) and below the landing groove (512), and lifting rods (514) are fixed on both sides of the output end of the lifting cylinder (513).

10. The automatic laser welding machine according to claim 9, characterized in that: The top of the unloading mounting frame (502) and located at the end of the unloading support plate (509) away from the unloading support roller (505) is rotatably connected to a unloading track (515); the end of the unloading track (515) close to the lifting rod (514) is rotatably connected to a plurality of material shifting teeth (517); the end of the material shifting teeth (517) close to the unloading track (515) is provided with a limiting foot (523) for limiting the rotation of the material shifting teeth (517); the inner bottom of the workbench (600) is rotatably connected to an adjusting cylinder (516); the output end of the adjusting cylinder (516) is rotatably connected to the unloading track (515); the workbench A second unloading track (518) is installed on the inner side of (600) and located at one end of the unloading track one (515) away from the lifting rod (514); a collecting box (519) is placed on the inner side of the workbench (600) and located at one end of the unloading track two (518) away from the unloading track one (515); a unloading transport cylinder (520) is installed on the top of the inner side of the workbench (600) and located above the unloading track two (518) and the collecting box (519); a unloading lifting cylinder (521) is installed on the output end of the unloading lifting cylinder (520); and a unloading air claw (522) is installed on the output end of the unloading lifting cylinder (521).

Images