An automated laser welding machine

Abstract

The present invention discloses an automatic laser welding machine, which includes a workbench. At both ends of the top of the workbench, a pipe feeding mechanism is installed. The pipe feeding mechanism includes a material storage part and a feeding part; at one end of the top of the workbench where the pipe feeding mechanisms at both ends are close to each other, a feeding handling mechanism is installed; on the top of the feeding handling mechanisms on both sides, a laser welding mechanism is installed; below the laser welding mechanism on the top of the workbench, an auxiliary welding mechanism is installed; inside the workbench and below the auxiliary welding mechanism, it is used for discharging handling and collection. The whole welding process of the present invention has a high degree of automation. The loading and unloading of pipes are completed by mechanical devices, thus greatly reducing the labor intensity of workers, protecting the staff, and not affecting the welding work during the loading and unloading of pipes, greatly improving the welding efficiency, having a high production rate, better welding quality, high qualified rate, and high consistency in the welding process.

Description

Technical Field

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

[0002] Laser welding is an efficient and precise welding method that uses a laser beam with a high energy density as a heat source. By using the laser beam, two workpieces are fused together. It is a new type of welding method that can achieve spot welding, butt welding, lap welding, seal welding, etc. It has a high depth-to-width ratio, a small weld width, a small heat-affected zone, small deformation, a fast welding speed, a flat and beautiful weld, and requires no treatment or only simple treatment after welding. The weld quality is high, there are no pores, it can be precisely controlled, the focused light spot is small, the positioning accuracy is high, and it is easy to achieve automation.

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

[0004] In the combined station structure of the existing pipe fitting laser welding machine, there are still welding devices with fewer stations, and in the devices with more stations, manual work is still required for loading, disassembling, and unloading the pipe fittings. Therefore, extra time will be spent on loading, installing and positioning, and unloading and discharging the pipe fittings during the welding process, which will lead to too long an interval time for the pipe fitting welding work, and ultimately result in too low welding efficiency and low production rate of some traditional laser welding machines. Moreover, during the manual installation of the pipe fittings, the traditional clamping structure needs to be tightened manually to complete the clamping work, so the disassembly work is laborious and time-consuming. Finally, during the manual unloading of the pipe fittings, the worker will directly contact the pipe fittings that have just been welded and have not cooled. If accidentally touching the welded part, there will be a risk of scalding.

[0005] Based on this, those skilled in the art have proposed an automatic laser welding machine, providing a new solution to solve the above technical problems. Summary of the Invention

[0006] Based on this, it is necessary to provide an automatic laser welding machine for the problems raised in the above background art.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The described automated laser welding machine specifically includes a workbench. At both ends of the top of the workbench, a pipe feeding mechanism is installed for feeding and preparing pipes. The pipe feeding mechanism includes a material storage part and a feeding part. At one end of the top of the workbench and close to each other between the pipe feeding mechanisms at both ends, a feeding and handling mechanism is installed for feeding and handling the pipes to be welded. On the top of the feeding and handling mechanisms on both sides, a laser welding mechanism is installed for laser welding the pipes. Below the laser welding mechanism on the top of the workbench, an auxiliary welding mechanism is installed. Inside the workbench and below the auxiliary welding mechanism, it is used for discharging, handling, and collecting.

[0009] Preferably, the material storage part includes a feeding box fixedly installed at one end of the top of the workbench. On both sides inside the feeding box, adjusting plates are provided. At the ends of both sides of the adjusting plates away from each other, adjusting screws are rotatably connected. The adjusting screws are threadedly connected to the feeding box, and the adjusting plates are slidably connected to the feeding box. At the bottom of the ends of the feeding box close to each other, a blanking hopper is provided.

[0010] Preferably, the feeding part includes a top material mounting frame fixed at the bottom of the workbench and below the blanking hopper. A top material cylinder is installed at the bottom of the top material mounting frame. The output end of the top material cylinder penetrates the top material mounting frame and is fixed with a connecting frame. The connecting frame is slidably connected to the top material mounting frame. At both ends of the connecting frame, top material rods are detachably installed. The top material rods are slidably connected inside the blanking hopper. On the top of the workbench and above the blanking hopper, a first mounting frame is fixedly installed. On the first mounting frame and above the top material rods, a feeding hook plate is rotatably connected. On the first mounting frame and on both sides of the two feeding hook plates, blanking plates are fixedly connected. On the top of the workbench and at the end of the blanking plate, a transition support block is installed. On the top of the workbench and at one end of the transition support block away from the blanking plate, a limit cylinder one is installed. The output end of the limit cylinder one is fixed with a limit piece one. Below the workbench and between the blanking plates on both sides, a limit cylinder two is installed. The output end of the limit cylinder two is fixed with a limit piece two.

[0011] Preferably, the feeding and handling mechanism includes a handling mounting frame fixed at the top of the workbench and at one end of the transition support block away from the feeding box. A horizontal handling cylinder is installed at one end of the handling mounting frame. The output end of the horizontal handling cylinder is fixed with a handling mounting plate. The handling mounting plate is slidably connected to the handling mounting frame. On the sides of the handling mounting plates away from each other, vertical handling cylinders are installed. On one side of the output end of the vertical handling cylinder, a feeding handling gripper is installed.

[0012] Preferably, the laser welding mechanism includes a horizontal displacement driving element mounted on the top of the handling and mounting frames on both sides. A first welding mounting frame is installed at the output end of the horizontal displacement driving element. A vertical displacement driving element is installed on one side of the first welding mounting frame and between the two handling and mounting frames. A second welding mounting frame is installed at the output end of the vertical displacement driving element. A laser welding head is installed on the second welding mounting frame for laser welding.

[0013] Preferably, the auxiliary welding mechanism includes first-stage displacement cylinders oppositely installed on both sides of the top of the workbench and below the laser welding head. The output end of the first-stage displacement cylinder is fixedly connected with a displacement frame. The displacement frame is slidably connected to the top of the workbench. A rotary driving motor is installed on the displacement frame at one end. The output end of the rotary driving motor is fixedly connected with a rotary driving rod. A first positioning rod is rotatably connected to the displacement frame at the other end. The central axes of the first positioning rod and the rotary driving rod are collinear. A plurality of guide rods are fixed on the mutually approaching sides of the two displacement frames. A first mounting plate is slidably connected to the outer sides of the plurality of guide rods. A spring is sleeved on the outer side of the guide rod and between the corresponding first mounting plate and the displacement frame. The two ends of the spring abut against the corresponding first mounting plate and the displacement frame. A second-stage displacement cylinder is installed on one side of the first mounting plate. The output end of the second-stage displacement cylinder is fixed with a second mounting plate. The second mounting plate is slidably connected to the top of the workbench. First connecting rods are fixed on both sides of one end of the second mounting plate close to the first mounting plate on the same side. A second connecting rod is sleeved on the outer side of the first connecting rod. The first connecting rod and the second connecting rod are slidably connected. The second connecting rod is fixed on the first mounting plate on the same side. Welding support rollers are rotatably connected to the mutually remote ends of the first connecting rod and the second connecting rod.

[0014] Preferably, pressing cylinders are installed on the mutually approaching sides of the two handling and mounting plates. Limiting rollers are rotatably connected to both sides of the bottom of the output end of the pressing cylinder.

[0015] Preferably, a vertical blanking displacement cylinder is installed on the second welding mounting frame and on one side of the laser welding head. A blanking grasping cylinder is installed at the output end of the vertical blanking displacement cylinder.

[0016] Preferably, a blanking opening is formed in the workbench and below the laser welding head. A blanking hopper is fixed inside the workbench and below the blanking opening. A blanking mounting frame is fixedly installed inside the workbench and below the blanking hopper. A blanking displacement cylinder is installed at the bottom of the blanking mounting frame. A blanking displacement frame is slidably connected above the blanking hopper and at the top of the blanking mounting frame. The output end of the blanking displacement cylinder is fixedly connected to the blanking displacement frame. A plurality of adjacent blanking support rollers are rotatably connected to the blanking displacement frame and below the blanking hopper for supporting the welded pipe fittings. A blanking push plate is fixed to the blanking displacement frame and on one side of the blanking support rollers. Positioning cylinders are installed on both sides of the blanking displacement frame. The output end of the positioning cylinder is fixed with a second positioning rod. The second positioning rod is slidably connected to the blanking displacement frame and above the space between two adjacent blanking support rollers. Blanking support plates are fixed to the top of the blanking mounting frame and on both sides inside the blanking displacement frame. The blanking displacement frame is slidably connected to the blanking support plates. At one end of the blanking support plate close to the blanking support rollers, there is a rising tabletop. At one end of the blanking support plate far from the blanking support rollers, there is a descending tabletop. A positioning groove is provided at one end of the descending tabletop far from the blanking support rollers. A jacking cylinder is installed at the bottom of the blanking mounting frame and below the positioning groove. Jacking rods are fixed on both sides of the output end of the jacking cylinder.

[0017] Preferably, a blanking track one is rotatably connected to the top of the blanking mounting frame and at the end of the blanking support plate far from the blanking support rollers. A plurality of material pushing teeth are rotatably connected to one end of the blanking track one close to the jacking rod. A limiting foot is provided at one end of the material pushing tooth close to the blanking track one for limiting the rotation of the material pushing tooth. An adjusting cylinder is rotatably connected to the inner bottom of the workbench. The output end of the adjusting cylinder is rotatably connected to the blanking track one. A blanking track two is installed inside the workbench and at the end of the blanking track one far from the jacking rod. A collection box is placed inside the workbench and at the end of the blanking track two far from the blanking track one. A blanking handling cylinder is installed inside the workbench and above the space between the blanking track two and the collection box. A blanking lifting cylinder is installed at the output end of the blanking handling cylinder. A blanking gripper is installed at the output end of the blanking lifting cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention feeds two pipe fittings to be welded through the pipe fitting feeding mechanisms at both ends, transports the pipe fittings during feeding through the feeding and handling mechanism, transports the pipe fittings onto the auxiliary welding mechanism, and positions them through the auxiliary welding mechanism, so that the two pipe fittings to be welded are positioned below the laser welding head. The pipe fittings are laser welded through the laser welding mechanism. During welding, the auxiliary welding mechanism drives the pipe fittings to rotate to assist the welding work. Subsequently, the welded pipe fittings are discharged and collected through the discharging mechanism. The entire welding process has a high degree of automation. The feeding and discharging of the pipe fittings are completed by mechanical devices, thus greatly reducing the manual labor intensity, protecting the staff, and not affecting the welding work during the feeding and discharging of the pipe fittings, greatly improving the welding efficiency, having a high production rate, good welding quality, high yield rate, and high consistency in the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the solutions in the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is an axonometric structure diagram of the present invention;

[0022] Figure 2 is a top view structure diagram of the present invention;

[0023] Figure 3 is a side view structure diagram of the present invention;

[0024] Figure 4 is an axonometric structure diagram of the pipe fitting feeding mechanism of the present invention;

[0025] Figure 5 is a sectional side view structure diagram of the present invention;

[0026] Figure 6 is a sectional axonometric structure diagram of the present invention;

[0027] Figure 7 is a structure diagram of the feeding and handling mechanism and the auxiliary welding mechanism of the present invention;

[0028] Figure 8 is a structure diagram of the pipe fitting feeding mechanism, the feeding and handling mechanism, the laser welding mechanism, and the auxiliary welding mechanism of the present invention;

[0029] Figure 9 is a structure diagram of the feeding and handling mechanism of the present invention;

[0030] Figure 10Schematic structural diagram of the laser welding mechanism of the present invention;

[0031] Figure 11 Schematic structure of the auxiliary welding mechanism of the present invention Figure 1 ;

[0032] Figure 12 Schematic structure of the auxiliary welding mechanism of the present invention Figure 2 ;

[0033] Figure 13 Schematic structural diagram of the laser welding mechanism, auxiliary welding mechanism and blanking mechanism of the present invention;

[0034] Figure 14 Schematic structural diagram of the auxiliary welding mechanism and blanking mechanism of the present invention;

[0035] Figure 15 Schematic structural diagram of the blanking mechanism of the present invention;

[0036] Figure 16 Schematic structural diagram of the first blanking track, material pushing teeth and limit feet of the present invention.

[0037] The markings in the figure are explained as follows:

[0038] 100, Pipe Fitting Loading Mechanism; 200, Loading and Handling Mechanism; 300, Laser Welding Mechanism; 400, Auxiliary Welding Mechanism; 500, Unloading Mechanism; 600, Workbench; 101, Loading Box; 102, Adjusting Plate; 103, Adjusting Screw; 104, Hopper; 105, Ejector Mounting Frame; 106, Ejector Cylinder; 107, Ejector Rod; 108, First Mounting Frame; 109, Unloading Plate; 110, Loading Hook Plate; 111, Transition Support Block; 112, Limit Cylinder 1; 113, Limit Plate 1; 114, Limit Cylinder 2; 115, Limit Plate 2; 116, Connecting Frame; 201, Handling Mounting Frame; 202, Horizontal Handling Cylinder; 203, Handling Mounting Plate; 204, Vertical Handling Cylinder; 205, Loading Handling Claw; 206, Pressing Cylinder; 207, Limit Roller; 301, Horizontal Displacement Driving Element; 302, Welding Mounting Frame 1; 303, Vertical Displacement Driving Element; 304, Welding Mounting Frame 2; 305, Laser Welding Head; 306, Vertical Unloading Displacement Cylinder; 307, Unloading Grabbing Cylinder; 401, First-stage Displacement Cylinder; 402, Displacement Frame; 403, Rotary Driving Motor; 404, Rotary Driving Rod; 405, First Positioning Rod; 406, First Mounting Plate; 407, Spring; 408, Guide Rod; 409, Second-stage Displacement Cylinder; 410, Second Mounting Plate; 411, First Connecting Rod; 412, Second Connecting Rod; 413, Welding Support Roller; 501, Unloading Hopper; 502, Unloading Mounting Frame; 503, Unloading Displacement Cylinder; 504, Unloading Displacement Frame; 505, Unloading Support Roller; 506, Unloading Pushing Plate; 507, Positioning Cylinder; 508, Second Positioning Rod; 509, Unloading Support Plate; 510, Rising Table; 511, Lowering Table; 512, Landing Groove; 513, Lifting Cylinder; 514, Lifting Rod; 515, Unloading Track 1; 516, Adjusting Cylinder; 517, Pushing Teeth; 518, Unloading Track 2; 519, Collection Box; 520, Unloading Handling Cylinder; 521, Unloading Lifting Cylinder; 522, Unloading Claw; 523, Limit Foot; 601, Unloading Port. Detailed Embodiment

[0039] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1

[0041] Please refer to Figure 1-16, an automatic laser welding machine provided by the present invention includes a workbench 600. At both ends of the top of the workbench 600, a pipe feeding mechanism 100 is installed for feeding and preparing pipes. The pipe feeding mechanism 100 includes a storage part and a feeding part; at one end of the top of the workbench 600 and close to each other between the pipe feeding mechanisms 100 at both ends, a feeding handling mechanism 200 is installed for feeding and handling the pipes to be welded; on the top of the feeding handling mechanisms 200 on both sides, a laser welding mechanism 300 is installed for laser welding the pipes; at the top of the workbench 600 and below the laser welding mechanism 300, an auxiliary welding mechanism 400 is installed for positioning the pipes to be welded, driving the pipes to be welded to rotate, and for loosening the pipes after welding is completed; inside the workbench 600 and below the auxiliary welding mechanism 400, it is used for discharging, handling and collecting. Specifically, two pipes to be welded are fed by the pipe feeding mechanisms 100 at both ends. When the pipes are fed by the feeding handling mechanism 200, the pipes are transported to the auxiliary welding mechanism 400, and the auxiliary welding mechanism 400 positions them, so that the two pipes to be welded are positioned below the laser welding head 305. The pipes are laser welded by the laser welding mechanism 300. During welding, the auxiliary welding mechanism 400 drives the pipes to rotate to assist the welding work. Subsequently, the welded pipes are discharged and collected by the discharging mechanism 500. The entire welding process has a high degree of automation. The feeding and discharging of the pipes are completed by mechanical devices, thus greatly reducing the labor intensity of workers, protecting the staff, and not affecting the welding work during the feeding and discharging of the pipes, greatly improving the welding efficiency, having a high production rate, good welding quality, high yield rate, and high consistency in the welding process.

[0042] Please refer to Figure 4-6, the storage part includes a loading box 101 fixedly installed at one end of the top of the workbench 600. On both sides inside the loading box 101, there are adjusting plates 102. At the mutually remote ends of the two adjusting plates 102, there is a rotatably connected adjusting screw 103. The adjusting screw 103 is threadedly connected to the loading box 101, and the adjusting plate 102 is slidably connected to the loading box 101. At the bottom of the mutually close ends of the two loading boxes 101, there is a blanking hopper 104. During use, the pipe fittings to be welded are pre-placed between the two adjusting plates 102 and positioned by the adjusting plates 102. In actual use, the two adjusting plates 102 should not tightly press the pipe fittings, but there should be a moving gap between them and the pipe fittings, so that the pipe fittings can move under their own weight. The setting of the adjusting screw 103 enables the distance between the two adjusting plates 102 to be adjusted to adapt to the welding between pipe fittings of different lengths. In actual use, a rotating disk should be fixed at the end of the adjusting screw 103 away from the loading box 101. When it is necessary to adjust the distance between the adjusting plates 102, manually rotating the rotating disk can drive the corresponding adjusting screw 103 to rotate, thereby driving the corresponding adjusting plate 102 to perform a displacement movement to adjust the distance between the two adjusting plates 102. Additionally, it should be noted that in actual use, a guiding shaft is fixed on 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 through the guiding shaft, and the movement of the adjusting plate 102 is guided by the guiding shaft.

[0043] Please refer to Figure 4-6, the feeding section includes a blanking mounting frame 105 fixed to the bottom of the workbench 600 and located below the blanking hopper 104. A blanking cylinder 106 is installed at the bottom of the blanking mounting frame 105. The output end of the blanking cylinder 106 penetrates through the blanking mounting frame 105 and is fixed with a connecting frame 116. The connecting frame 116 is slidably connected to the blanking mounting frame 105. Blanking rods 107 are detachably installed at both ends of the connecting frame 116. The blanking rods 107 are slidably connected inside the blanking hopper 104. A first mounting frame 108 is fixedly installed on the top of the workbench 600 and above the blanking hopper 104. A feeding hook plate 110 is rotatably connected above the blanking rods 107 on the first mounting frame 108. Blanking plates 109 are fixedly connected on both sides of the two feeding hook plates 110 on the first mounting frame 108. A transition support block 111 is installed at the end of the blanking plate 109 on the top of the workbench 600. A first limit cylinder 112 is installed at one end of the transition support block 111 away from the blanking plate 109 on the top of the workbench 600. A first limit piece 113 is fixed to the output end of the first limit cylinder 112. A second limit cylinder 114 is installed below the workbench 600 and between the blanking plates 109 on both sides. A second limit piece 115 is fixed to the output end of the second limit cylinder 114. Specifically, the bottom of the feeding box 101 is inclined towards the blanking hopper 104. During use, the staff places multiple pipe fittings to be welded between the adjusting plates 102. The pipe fittings near the top of the adjusting screw 103 will slide into the blanking hopper 104 and be supported by the blanking rods 107. When pipe fittings need to be fed, the blanking cylinder 106 is activated to drive the connecting frame 116 to rise, thereby driving the blanking rods 107 to rise to convey the pipe fittings supported by the blanking rods 107 upward. The feeding hook plate 110 includes a rod portion above and a hook portion below. The top of the hook portion is an inclined surface that slopes downward. When the pipe fitting contacts the feeding hook plate 110, it will first push it to the side. When the pipe fitting moves above the hook portion at the bottom of the feeding hook plate 110, under the action of its own weight, the feeding hook plate 110 will rotate a small distance in the reset direction, so that the rod portion above it holds the pipe fitting, and the hook portion below hooks the pipe fitting. Then the blanking cylinder 106 is activated again to drive the blanking rods 107 to descend. At this time, under the action of the feeding hook plate 110, the blanking rods 107 will first separate from the pipe fittings, and then the pipe fittings will roll along the top inclined surface of the hook portion under their own weight and roll onto the blanking plate 109. At this time, the second limit cylinder 114 will be activated to drive the second limit piece 115 to rise to block the corresponding pipe fitting. This is the transition position for feeding the pipe fittings. During feeding, there is always a pipe fitting blocked here for the next feeding. When the pipe fitting at the transition needs to be fed, the second limit cylinder 114 is activated to drive the second limit piece 115 to descend. At this time, the pipe fitting previously blocked by the second limit piece 115 continues to roll downward along the blanking plate 109 to the top of the transition support block 111. At the same time, the first limit cylinder 112 is activated to drive the first limit piece 113 to rise to block the pipe fitting for positioning for feeding and handling.

[0044] Please refer to Figure 9 , the loading and handling mechanism 200 includes a handling mounting frame 201 fixed to the top of the workbench 600 and located at one end of the transition support block 111 away from the loading box 101. One end of the handling mounting frame 201 is equipped with a horizontal handling cylinder 202, and the output end of the horizontal handling cylinder 202 is fixed with a handling mounting plate 203. The handling mounting plate 203 is slidably connected to the handling mounting frame 201. On the mutually remote sides of the handling mounting plates 203 on both sides, a vertical handling cylinder 204 is installed, and on one side of the output end of the vertical handling cylinder 204, a loading handling gripper 205 is installed. Specifically, when it is necessary to load and handle the pipe fittings located on the top of the transition support block 111, the horizontal handling cylinder 202 is activated to drive the handling mounting plate 203 to move, making it move towards the transition support block 111. When the loading handling gripper 205 moves to the top of the pipe fittings on the transition support block 111, the vertical handling cylinder 204 is activated to drive the loading handling gripper 205 to descend, and the pipe fittings are clamped by the loading handling gripper 205. Subsequently, the vertical handling cylinder 204 is activated again to drive the loading handling gripper 205 and the pipe fittings to rise, and at the same time, the horizontal handling cylinder 202 is activated to drive the loading handling gripper 205 and the pipe fittings to move away from the transition support block 111 to the required position.

[0045] Please refer to Figure 10 , the laser welding mechanism 300 includes a horizontal displacement driving element 301 erected on the top of the handling mounting frames 201 on both sides. A welding mounting frame one 302 is installed on the output end of the horizontal displacement driving element 301. A vertical displacement driving element 303 is installed on one side of the welding mounting frame one 302 and between the two handling mounting frames 201. A welding mounting frame two 304 is installed on the output end of the vertical displacement driving element 303, and a laser welding head 305 is installed on the welding mounting frame two 304 for laser welding. Specifically, when welding is required, the pipe fittings can be welded through the laser welding head 305. The settings of the horizontal displacement driving element 301 and the vertical displacement driving element 303 facilitate the position adjustment of the laser welding head 305. The activation of the horizontal displacement driving element 301 can drive the laser welding head 305 to perform displacement adjustment in the horizontal direction, and the activation of the welding mounting frame two 304 can drive the laser welding head 305 to perform displacement adjustment in the vertical direction.

[0046] 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.

[0047] Embodiment 2

[0048] Please refer to Figure 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.

[0049] Please refer to Figure 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.

[0050] Please refer to Figure 13-15, a blanking opening 601 is provided on the workbench 600 and below the laser welding head 305. A blanking hopper 501 is fixed inside the workbench 600 and below the blanking opening 601. A blanking mounting frame 502 is fixedly installed inside the workbench 600 and below the blanking hopper 501. A blanking displacement cylinder 503 is installed at the bottom of the blanking mounting frame 502. A blanking displacement frame 504 is slidably connected to the top of the blanking mounting frame 502 and below the blanking hopper 501. The output end of the blanking displacement cylinder 503 is fixedly connected to the blanking displacement frame 504. A plurality of adjacent blanking support rollers 505 are rotatably connected to the blanking displacement frame 504 and below the blanking hopper 501, which are used to support the welded pipe fittings. A blanking push plate 506 is fixed to the blanking displacement frame 504 and on one side of the blanking support rollers 505. Positioning cylinders 507 are installed on both sides of the blanking displacement frame 504. The output end of the positioning cylinder 507 is fixed with a second positioning rod 508. The second positioning rod 508 is slidably connected to the blanking displacement frame 504. The second positioning rod 508 is located above the space between two adjacent blanking support rollers 505. Blanking support plates 509 are fixed to the top of the blanking mounting frame 502 and on both sides inside the blanking displacement frame 504. The blanking displacement frame 504 is slidably connected to the blanking support plates 509. At one end of the top of the blanking support plate 509 close to the blanking support rollers 505, there is a rising table surface 510. At one end of the top of the blanking support plate 509 far from the blanking support rollers 505, there is a descending table surface 511. At one end of the descending table surface 511 far from the blanking support rollers 505, there is a positioning groove 512. A jacking cylinder 513 is installed at the bottom of the blanking mounting frame 502 and below the positioning groove 512. Jacking rods 514 are fixed to both sides of the output end of the jacking cylinder 513. Specifically, when the pipe fitting is welded and separated from the rotary drive rod 404 and the first positioning rod 405, the vertical blanking displacement cylinder 306 drives the blanking grabbing cylinder 307 to descend, and the blanking grabbing cylinder 307 releases the pipe fitting, allowing it to fall into the blanking hopper 501 and then through the blanking hopper 501 onto the top of the blanking support rollers 505. Subsequently, the positioning cylinders 507 on both sides are activated to drive the second positioning rods 508 to approach each other, and the pipe fitting is positioned and centered by the second positioning rods 508. Then, the blanking displacement cylinder 503 is activated to drive the blanking displacement frame 504 to move. When the blanking displacement frame 504 moves, the pipe fitting and the blanking support plate 509 move relative to each other. During the movement, the pipe fitting first contacts the rising table surface 510, and at the same time, the rising table surface 510 generates a certain resistance to it. At this time, the blanking displacement frame 504 continues to move. Under the push of the blanking push plate 506, the pipe fitting rises along the rising table surface 510 and disengages from the blanking support rollers 505. Subsequently, the blanking displacement frame 504 continues to move. The pipe fitting moves from the rising table surface 510 to the descending table surface 511 and rolls down along the descending table surface 511 into the positioning groove 512 to complete the preliminary blanking.

[0051] Please refer to Figure 13-15, at the top of the blanking mounting frame 502 and located at one end of the blanking support plate 509 away from the blanking support roller 505, a blanking track 515 is rotatably connected. At one end of the blanking track 515 close to the lifting rod 514, a number of material pushing teeth 517 are rotatably connected. At one end of the material pushing teeth 517 close to the blanking track 515, a limiting foot 523 is provided for limiting the rotation of the material pushing teeth 517. At the inner bottom of the workbench 600, an adjusting cylinder 516 is rotatably connected. The output end of the adjusting cylinder 516 is rotatably connected to the blanking track 515. Inside the workbench 600 and at one end of the blanking track 515 away from the lifting rod 514, a blanking track 518 is installed. Inside the workbench 600 and at one end of the blanking track 518 away from the blanking track 515, a collection box 519 is placed. Above the space between the blanking track 518 and the collection box 519 at the inner top of the workbench 600, a blanking transfer cylinder 520 is installed. On the output end of the blanking transfer cylinder 520, a blanking lifting cylinder 521 is installed. On the output end of the blanking lifting cylinder 521, a blanking gripper 522 is installed. Specifically, when the pipe fitting moves to the inside of the positioning groove 512, the lifting cylinder 513 starts to drive the lifting rod 514 to rise, and the pipe fitting inside the positioning groove 512 is lifted by the lifting rod 514. During the process of the pipe fitting being lifted by the lifting rod 514, the pipe fitting first contacts the material pushing teeth 517. Under the action of the pipe fitting, the material pushing teeth 517 rotate upward, so as not to affect the upward movement of the pipe fitting. When the pipe fitting moves above the material pushing teeth 517, the lifting cylinder 513 starts again to drive the lifting rod 514 and the pipe fitting to descend. At this time, the material pushing teeth 517 reset under their own weight, and after resetting, the limiting foot 523 abuts against the blanking track 515 so that the material pushing teeth 517 cannot rotate downward anymore to position it. At this time, when the lifting rod 514 drives the pipe fitting to descend, the material pushing teeth 517 will block the pipe fitting and make it gradually separate from the lifting rod 514. When the pipe fitting is completely separated from the lifting rod 514, the pipe fitting will roll along the blanking track 515 to above the blanking track 518 and roll along the blanking track 518 to the position to be grabbed at the bottom. Subsequently, the blanking transfer cylinder 520 starts to drive the blanking lifting cylinder 521 and the blanking gripper 522 to move above the pipe fitting at the top of the blanking track 518. Subsequently, the blanking lifting cylinder 521 starts to drive the blanking gripper 522 to descend and grabs the pipe fitting on the blanking track 518 through the blanking gripper 522. Subsequently, the blanking transfer cylinder 520, the blanking lifting cylinder 521, and the blanking gripper 522 start again to place the pipe fittings into the collection box 519 in sequence for unified collection.

[0052] The working principle of an automatic laser welding machine provided by the present invention is as follows:

[0053] When using this laser welding machine, first, the staff place multiple pipe fittings to be welded between the adjusting plates 102. When feeding the pipe fittings, the ejector cylinder 106 starts to drive the ejector rod 107 to rise, so as to convey the pipe fittings supported by the ejector rod 107 upward. Subsequently, under the action of the feeding hook plate 110, they roll onto the blanking plate 109 and roll down along the blanking plate 109 to the top of the transition support block 111. At the same time, the limit cylinder 112 starts to drive the limit piece 113 to rise to block the pipe fittings and position them for feeding and handling;

[0054] Subsequently, the horizontal transfer cylinder 202 starts to drive the transfer mounting plate 203 to move, making it move towards the transition support block 111. When the feeding transfer gripper 205 moves to the top of the pipe fittings on the transition support block 111, the vertical transfer cylinder 204 starts to drive the feeding transfer gripper 205 to descend, and the pipe fittings are clamped by the feeding transfer gripper 205. Subsequently, the vertical transfer cylinder 204 starts again to drive the pipe fittings to move above the welding support rollers 413. Then the vertical transfer cylinder 204 starts to drive the pipe fittings to descend, and the pipe fittings are placed between the corresponding group of welding support rollers 413. Subsequently, the first-stage displacement cylinder 401 starts to drive the displacement frames 402 on both sides to move towards each other, and at the same time, the two second-stage displacement cylinders 409 start to drive the second mounting plates 410 on both sides to move away from each other, so that the pipe fittings on the welding support rollers 413 approach and abut each other. At the same time, the pressing cylinder 206 starts to drive the limit roller 207 to descend, and the pipe fittings are pressed in the radial direction by the limit roller 207. Subsequently, the pipe fittings can be welded by the laser welding head 305. At the same time, the rotation drive motor 403 starts to drive the rotation drive rod 404 to rotate, thereby driving the pipe fittings to rotate, so as to weld the entire circumference of the pipe fittings;

[0055] After the pipe fitting is welded and separated from the rotary drive rod 404 and the first positioning rod 405, the vertical unloading displacement cylinder 306 drives the unloading grasping cylinder 307 to descend, and the unloading grasping cylinder 307 releases the pipe fitting, causing it to fall into the blanking hopper 501 and then into the top of the blanking support roller 505 through the blanking hopper 501. Subsequently, the positioning cylinders 507 on both sides are activated to drive the second positioning rods 508 to approach each other, and the pipe fitting is positioned and centered by the second positioning rods 508. Then, the blanking displacement cylinder 503 is activated to drive the blanking displacement frame 504 to move, causing the pipe fitting to rise along the rising table surface 510 under the push of the blanking push plate 506 and separate from the blanking support roller 505. Subsequently, the blanking displacement frame 504 continues to move, and the pipe fitting moves from the rising table surface 510 to the descending table surface 511 and rolls down along the descending table surface 511 to the inside of the positioning groove 512. Then, the lifting cylinder 513 is activated to drive the lifting rod 514 to rise, and the pipe fitting inside the positioning groove 512 is lifted by the lifting rod 514. After it moves above the dialing teeth 517, at this time, the dialing teeth 517 reset under their own weight. The lifting cylinder 513 is activated again to drive the lifting rod 514 and the pipe fitting to descend, and the dialing teeth 517 will block the pipe fitting to gradually separate it from the lifting rod 514. The pipe fitting will roll along the blanking track one 515 to the position to be grasped at the bottom of the blanking track two 518. Subsequently, the blanking handling cylinder 520 is activated to drive the blanking lifting cylinder 521 and the blanking claw 522 to move above the pipe fitting at the top of the blanking track two 518. Then, the blanking lifting cylinder 521 is activated to drive the blanking claw 522 to descend and grasp the pipe fitting on the blanking track two 518 through the blanking claw 522. Subsequently, the blanking handling cylinder 520, the blanking lifting cylinder 521, and the blanking claw 522 are activated again to place the pipe fittings into the inside of the collection box 519 in sequence for unified collection.

[0056] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all of them. The preferred embodiments of the present invention are shown 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 disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure made by using the content of the specification and drawings of the present invention, directly or indirectly applied in other related technical fields, is equally within the scope of the 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); a unloading mechanism (500) is provided on the inner side of the workbench (600) and below the auxiliary welding mechanism (400), for unloading, transporting and collecting materials; 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), 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); 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).

2. The automatic laser welding machine according to claim 1, 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).

3. The automatic laser welding machine according to claim 2, 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.

4. The automatic laser welding machine according to claim 3, 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).

5. The automatic laser welding machine according to claim 4, 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).

6. The automatic laser welding machine according to claim 5, 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).

7. The automatic laser welding machine according to claim 6, characterized in that: A material discharge port (601) is provided on the workbench (600) and below the laser welding head (305); the material discharge mechanism (500) comprises a material discharge hopper (501) fixed on the inner side of the workbench (600) and below the material discharge port (601); a material discharge mounting frame (502) is fixedly installed 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); and a material discharge displacement cylinder (503) is installed at the top of the material discharge mounting frame (502) and below the material discharge hopper. A material unloading displacement frame (504) is slidably connected to the lower part of the material unloading displacement frame (501); the output end of the material unloading displacement cylinder (503) is fixedly connected to the material unloading displacement frame (504); a plurality of groups of adjacent material unloading support rollers (505) are rotatably connected on the material unloading displacement frame (504) and located below the material unloading hopper (501) to support the welded pipe fittings; a material unloading push plate (506) is fixed on the material unloading displacement frame (504) and located on one side of the material unloading support roller (505); positioning cylinders ( 507), a second positioning rod (508) is fixed to the output end of the positioning cylinder (507), the second positioning rod (508) is slidably connected to the blanking displacement frame (504), the second positioning rod (508) is located above between two adjacent blanking support rollers (505), a blanking support plate (509) is fixed to the top of the blanking mounting frame (502) and on both sides of the inner side of the blanking displacement frame (504), the blanking displacement frame (504) is slidably connected to the blanking support plate (509), the blanking support plate (509) A rising table (510) is provided at one end of the top of the material unloading support plate (509) 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).

8. The automatic laser welding machine according to claim 7, 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).

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