Automatic metal pipe welding device and method thereof

Abstract

The application discloses a metal pipe automatic welding device and method, and belongs to the technical field of pipe processing. The device comprises a hollow support frame, an inclined storage assembly connected to one end of the top of the hollow support frame, an auxiliary discharging assembly slidingly attached to the lower end of the storage assembly and fixedly connected to the hollow support frame, a positioning welding assembly for positioning and welding of flanges and metal pipes, which is fixedly connected to the hollow support frame and located at the end of the auxiliary discharging assembly away from the storage assembly, a plurality of horizontal material guiding assemblies for horizontal material guiding, which are fixedly connected to the hollow support frame and located at the end of the positioning welding assembly away from the storage assembly, and an inner-outer welding assembly for welding of the inner and outer connecting portions of the flanges and the metal pipe end portions, which is fixedly connected to the hollow support frame and located at the end of the horizontal material guiding assembly away from the storage assembly. The application realizes automatic welding of metal pipes and flanges and improves the welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, and specifically to an automatic metal pipe welding device and method. Background Technology

[0002] Common transport pipelines are usually made up of a large number of steel pipes spliced ​​together, with flanges welded to both ends of each steel pipe.

[0003] For example, Chinese patent CN120286934A describes an automatic assembly and welding platform for steel pipes and flanges, belonging to the field of welding equipment. Its key technical features include: a machine base; a translation mechanism, consisting of two sets movably mounted on the machine base; a support mechanism fixed to the translation mechanism, comprising two sets of linear moving components arranged at an angle, each end of which is rotatably connected to a ball bearing. When the steel pipe is supported by the support mechanism, the peripheral wall of the steel pipe abuts against the ball bearing; a chuck fixed to the translation mechanism, comprising several jaws for clamping flanges; a drive mechanism one, detachably connected to the turntable inside the chuck via a worm gear reducer and a self-disassembly mechanism, used to drive the jaws on the chuck to move and loosen / tighten the flange; and a drive mechanism two, connected to the chuck body on the chuck via a worm gear reducer, used to drive the chuck to rotate. This invention enables rotary welding of flanges and steel pipes.

[0004] Although the above structure can initiate the welding of metal pipes and flanges, it can only weld one set of flanges at one end of the pipe. Welding at the other end of the pipe requires another operation, making the welding operation complicated. In addition, it cannot be automated, resulting in low overall welding efficiency.

[0005] Based on this, the present invention designs an automatic metal pipe welding device and method to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automatic metal pipe welding device and method.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automatic metal pipe welding device includes a hollow support frame;

[0009] The top end of the hollow support frame is connected to an inclined storage assembly;

[0010] The lower end of the material storage component has two sets of auxiliary feeding components for buffering the material feeding. The two sets of auxiliary feeding components are set opposite to each other, and the auxiliary feeding components are fixedly connected to the hollow support frame.

[0011] The hollow support frame is fixedly connected to a tack welding assembly for tack welding of flanges and metal pipes, and the tack welding assembly is located at the end of the auxiliary unloading assembly away from the storage assembly.

[0012] The hollow support frame is fixedly connected to multiple sets of horizontal material guiding assemblies for horizontal material guiding, and the horizontal material guiding assemblies are located at the end of the positioning welding assembly away from the material storage assembly;

[0013] The hollow support frame is fixedly connected with inner and outer welding assemblies for welding the inner and outer connections of flanges and metal pipe ends. The inner and outer welding assemblies are located at the end of the horizontal material guide assembly away from the material storage assembly, and the inner and outer welding assemblies are fixedly connected to the positioning welding assembly.

[0014] The hollow support frame is fixedly connected to multiple sets of discharge components for discharging material, and the discharge components are located at the ends of the inner and outer welding components that are far away from the storage components.

[0015] The hollow support frame is fixedly connected to a material pushing component for pushing materials. The material pushing component has three sets of drive ends, which are located at the lower end of the material storage component, directly below the positioning welding component, and directly below the inner and outer welding components, respectively.

[0016] Furthermore, the material storage assembly includes multiple sets of support legs and two sets of inclined L-shaped guide plates. The two sets of inclined L-shaped guide plates are arranged opposite each other. The multiple sets of support legs are divided into two equal parts, and each set of support legs is fixedly installed at equal intervals at the bottom of the inclined L-shaped guide plates. The support legs are fixedly connected to the top of the hollow support frame, and the inclined L-shaped guide plates are set at an angle.

[0017] Furthermore, the auxiliary feeding assembly includes a third hydraulic cylinder, a T-shaped plate, a first fixed seat, an arc-shaped plate, and a rotating plate. The top of the hollow support frame has a movable slot. The first fixed seat is fixedly installed inside the top of the hollow support frame. The bottom of the third hydraulic cylinder is rotatably connected to the first fixed seat, and the third hydraulic cylinder moves within the movable slot. The drive end of the third hydraulic cylinder is rotatably connected to one end of the rotating plate, and the other end of the rotating plate is fixedly connected to the arc-shaped plate. The middle part of the rotating plate is rotatably connected to the end of the T-shaped plate away from the material storage assembly. The T-shaped plate is fixedly installed on the top of the hollow support frame. The T-shaped plate is located on the outer side of the lower end of the material storage assembly, and the top of the T-shaped plate is flush with the top of the lower end of the material storage assembly. The arc-shaped plate moves within the positioning welding assembly.

[0018] Furthermore, the tack welding assembly includes a first welding assembly, multiple sets of rolling support assemblies, and two sets of flange feeding assemblies. The first welding assembly is connected to the inner and outer welding assemblies. The multiple sets of rolling support assemblies and the two sets of flange feeding assemblies are all fixedly connected to the hollow support frame. The multiple sets of rolling support assemblies are located between the two sets of flange feeding assemblies and are divided into two equal parts.

[0019] Furthermore, the first welding assembly includes a first welding torch and a first connecting frame, the first connecting frame being fixedly connected to the inner and outer welding assemblies, and the bottom of the first connecting frame being fixedly connected to the first welding torch.

[0020] Furthermore, the rolling support assembly includes a first roller and a first support frame. The first support frame is fixedly installed on the top of the hollow support frame. The first support frame is divided into two equal parts and is arranged on the left and right. The first roller is rotatably connected to the first support frame, and the outer wall of the first roller is in close contact with the outer wall of the metal tube.

[0021] Furthermore, the flange loading assembly includes a first hydraulic cylinder, a moving plate, a guide rail assembly, a first fixed frame, a sliding column, a first connecting block, a chuck, a second connecting block, and a rotating shaft. The first hydraulic cylinder, the first fixed frame, and the guide rails of the guide rail assembly are all fixedly installed on the top of the hollow support frame. The drive end of the first hydraulic cylinder is fixedly connected to the moving plate, the moving plate is fixedly connected to the slider of the guide rail assembly, the upper end of the moving plate is rotatably connected to the rotating shaft, one end of the rotating shaft is fixedly connected to the second connecting block, the inner end of the second connecting block is fixedly connected to the chuck, the other end of the rotating shaft is fixedly connected to one end of the first connecting block, and the other end of the first connecting block, away from the side wall of the moving plate, is fixedly connected to the sliding column. The upper end of the first fixed frame is provided with a horizontal groove and a straight groove. The horizontal groove is located inside the straight groove, and the outer end of the horizontal groove communicates with the top of the straight groove. The end of the sliding column away from the first connecting block is in contact with the horizontal groove or the straight groove and slides in a sliding connection. When the chuck is in a horizontal state, the chuck is coaxially arranged with the metal pipe.

[0022] Furthermore, the inner and outer welding components include a set of rotating components, two sets of pressure roller assemblies, two sets of outer welding components, two sets of height adjustment components, two sets of inner welding components, and two sets of end calibration components. The set of rotating components and the two sets of height adjustment components are fixedly connected to the top of the hollow support frame. The two sets of height adjustment components are located at the front and rear ends of the set of rotating components. The two sets of outer welding components are connected to the two sets of height adjustment components one by one. The pressure roller assembly is fixedly installed on the inner wall of the outer welding component. The end calibration component is fixedly connected to the outer wall of the outer welding component. The inner welding component is fixedly connected to the side wall of the height adjustment component.

[0023] Furthermore, the material pushing assembly includes a second hydraulic cylinder, a second support frame, a straight plate, an inclined plate, and a straight baffle. The second hydraulic cylinder is fixedly installed at the bottom of the hollow support frame, and the second support frame is fixedly installed on the drive end of the second hydraulic cylinder. Six sets of rectangular arrays of straight plates are fixedly installed at the top of the second support frame. The straight plates pass through the top of the hollow support frame and are fixedly connected to the inclined plates. The end of the inclined plate near the material storage assembly is higher than the end of the material storage assembly away from the inclined plate. The inclined plate located directly below the material storage assembly is fixedly connected to the straight baffle away from the side wall of the inner and outer welding assemblies. The inclined plate below the positioning welding assembly is located between the first support frames on the left and right sides, and the inclined plate below the inner and outer welding assemblies is located directly below the inner and outer welding assemblies.

[0024] To better achieve the objectives of this invention, the present invention also provides a welding method using an automatic metal pipe welding device, comprising the following steps:

[0025] Step 1: The metal tubes are stored one by one in the inclined storage assembly;

[0026] Step 2: The flange is then installed onto both ends of the metal pipe inside the tack welding assembly. The inner and outer welding assemblies then perform rotational welding on the inner and outer connections between the tack welded metal pipe and the flange.

[0027] Step 3: The drive end of the pusher component moves upward. The drive end of the pusher component located below the inner and outer welding components pushes the metal tube welded inside the inner and outer welding components out of the inner and outer welding components and then discharges it from the discharge component. The drive end of the pusher component located directly below the positioning welding component pushes the metal tube of the positioning welding component upward through the horizontal guide component into the inner and outer welding components. The drive end of the pusher component located at the lower end of the storage component pushes the metal tube at the lower end of the storage component to the auxiliary unloading component. The auxiliary unloading component then puts the metal tube into the positioning welding component. The positioning welding component then installs the flange to both ends of the metal tube inside the positioning welding component.

[0028] Step 4: Repeat steps 2-3.

[0029] Compared with the prior art, the beneficial effects of this invention are as follows: metal tubes are stored one by one in an inclined storage assembly. The driving end of the pushing assembly moves upward. The driving end of the pushing assembly located below the inner and outer welding assemblies pushes the metal tubes welded in the inner and outer welding assemblies out of the inner and outer welding assemblies and then discharges them from the discharge assembly. The driving end of the pushing assembly located directly below the positioning welding assembly pushes the positioning welded metal tubes in the positioning welding assembly upward through the horizontal guiding assembly into the inner and outer welding assemblies. The driving end of the pushing assembly located at the lower end of the storage assembly pushes the metal tubes at the lower end of the storage assembly onto the auxiliary unloading assembly. The auxiliary unloading assembly then places the metal tubes into the positioning welding assembly. The positioning welding assembly then installs flanges onto both ends of the metal tubes in the positioning welding assembly. Next, the positioning welding assembly performs positioning welding on the flanges and metal tubes. The inner and outer welding assemblies perform rotational welding on the inner and outer connections of the positioning welded metal tubes and flanges, thereby realizing automated welding of metal tubes and flanges and improving welding efficiency. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0031] Figure 1A three-dimensional representation of an automatic metal pipe welding device according to the present invention. Figure 1 ;

[0032] Figure 2 This is a front view of an automatic metal pipe welding device according to the present invention;

[0033] Figure 3 This is a right view of an automatic metal pipe welding device according to the present invention;

[0034] Figure 4 A three-dimensional representation of an automatic metal pipe welding device according to the present invention. Figure 2 ;

[0035] Figure 5 A three-dimensional representation of an automatic metal pipe welding device according to the present invention. Figure 3 ;

[0036] Figure 6 A three-dimensional representation of an automatic metal pipe welding device according to the present invention. Figure 4 ;

[0037] Figure 7 A three-dimensional representation of an automatic metal pipe welding device according to the present invention. Figure 5 ;

[0038] Figure 8 For along Figure 3 A sectional view along the AA direction;

[0039] Figure 9 For along Figure 3 BB direction sectional view;

[0040] Figure 10 for Figure 3 Enlarged view of point C in the middle;

[0041] Figure 11 for Figure 5 Enlarged view of point D in the middle.

[0042] The labels in the diagram represent:

[0043] 1. Hollow support frame 2. Positioning welding assembly 21. First hydraulic cylinder 22. Moving plate 23. Guide rail assembly 24. First fixed frame 25. Straight groove 26. Horizontal groove 27. Sliding column 28. First connecting block 29. Chuck 210. First welding torch 211. First connecting frame 212. First roller 213. First support frame 214. Second connecting block 215. Rotating shaft 3. Material storage assembly 31. Support leg 32. Inclined L-shaped guide plate 4. Pushing assembly 41. Second hydraulic cylinder 42. Second support frame 43. Straight plate 44. Inclined plate 45. Straight baffle 5. Auxiliary unloading assembly 51. Third hydraulic cylinder 52. T-shaped plate 53. First fixed seat 54. Movable groove 55. Arc-shaped plate 56. Rotating plate 6. Horizontal material guiding assembly 61. First support plate 62. Horizontal plate 7. Inner and outer welding assembly 71. First guide rod 72. First cylinder 73. Third support frame 74. Horizontal movable plate 75. First mounting straight plate 76. Second welding gun 77. Pressure roller 78. Pressure roller mounting frame 79. Side plate 710. Second cylinder 711. Motor 712. Second guide rod 713. Third welding gun 714. Second mounting straight plate 715. First transmission assembly 716. First horizontal shaft 717. Second transmission assembly 718. Second horizontal shaft 719. Fourth support frame 720. Second roller 721. L-shaped plate 722. Positioning side plate 723. Inclined chute 8. Discharge assembly 81. Second support plate 82. Inclined guide plate. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0046] Example 1: In some examples, please refer to Figures 1-11 An automatic metal pipe welding device includes a hollow support frame 1;

[0047] The hollow support frame 1 has an inclined storage component 3 connected to one end of its top.

[0048] Two sets of auxiliary feeding components 5 for buffering feeding are attached to and slidably at the lower end of the material storage component 3. The two sets of auxiliary feeding components 5 are set opposite to each other, and the auxiliary feeding components 5 are fixedly connected to the hollow support frame 1.

[0049] The hollow support frame 1 is fixedly connected to a tack welding assembly 2 for tack welding of flanges and metal pipes, and the tack welding assembly 2 is located at the end of the auxiliary feeding assembly 5 away from the storage assembly 3.

[0050] The hollow support frame 1 is fixedly connected to multiple sets of horizontal material guiding components 6 for horizontal material guiding, and the horizontal material guiding components 6 are located at the end of the positioning welding component 2 away from the material storage component 3;

[0051] The hollow support frame 1 is fixedly connected to an inner and outer welding assembly 7 for welding the inner and outer connections of the flange and the end of the metal pipe. The inner and outer welding assembly 7 is located at the end of the horizontal material guide assembly 6 away from the material storage assembly 3, and the inner and outer welding assembly 7 is fixedly connected to the positioning welding assembly 2.

[0052] The hollow support frame 1 is fixedly connected to multiple sets of discharge components 8 for discharging materials, and the discharge components 8 are located at the end of the inner and outer welding components 7 away from the material storage components 3.

[0053] The hollow support frame 1 is fixedly connected to a material pushing component 4 for pushing materials. The material pushing component 4 has three sets of driving ends, which are located at the lower end of the material storage component 3, directly below the positioning welding component 2, and directly below the inner and outer welding components 7, respectively.

[0054] Metal tubes are stored one by one in the inclined storage assembly 3. The drive end of the pusher assembly 4 moves upward. The drive end of the pusher assembly 4, located below the inner and outer welding assembly 7, pushes the metal tubes welded in the inner and outer welding assembly 7 out of the inner and outer welding assembly 7 and then discharges them from the discharge assembly 8. The drive end of the pusher assembly 4, located directly below the positioning welding assembly 2, pushes the metal tubes positioned in the positioning welding assembly 2 upward through the horizontal guide assembly 6 into the inner and outer welding assembly 7. The drive end of the pusher assembly 4, located at the lower end of the storage assembly 3, pushes the metal tubes at the lower end of the storage assembly 3 onto the auxiliary unloading assembly 5. The auxiliary unloading assembly 5 then places the metal tubes into the positioning welding assembly 2. The positioning welding assembly 2 then installs flanges onto both ends of the metal tubes in the positioning welding assembly 2. Next, the positioning welding assembly 2 performs positioning welding on the flanges and metal tubes. The inner and outer welding assembly 7 performs rotational welding on the inner and outer connections of the positioning welded metal tubes and flanges, realizing automated welding of metal tubes and flanges and improving welding efficiency.

[0055] Please see Figures 1-2The material storage component 3 includes multiple sets of support legs 31 and two sets of inclined L-shaped guide plates 32. The two sets of inclined L-shaped guide plates 32 are arranged opposite each other. The multiple sets of support legs 31 are divided into two equal parts, and each set of support legs 31 is fixedly installed at equal intervals at the bottom of the inclined L-shaped guide plate 32. The support legs 31 are fixedly connected to the top of the hollow support frame 1, and the inclined L-shaped guide plate 32 is set at an angle.

[0056] When the metal tube is placed in the inclined L-shaped guide plate 32 of the storage assembly 3, the metal tube inside the inclined L-shaped guide plate 32 tends to move towards the lower end of the inclined L-shaped guide plate 32 due to the inclined setting of the inclined L-shaped guide plate 32, which makes it easy for the metal tube to move towards the lower end of the inclined L-shaped guide plate 32 one by one.

[0057] Please see Figure 1 , Figure 9 The auxiliary feeding assembly 5 includes a third hydraulic cylinder 51, a T-shaped plate 52, a first fixed seat 53, an arc-shaped plate 55, and a rotating plate 56. The top of the hollow support frame 1 has a movable groove 54. The first fixed seat 53 is fixedly installed inside the top of the hollow support frame 1. The bottom of the third hydraulic cylinder 51 is rotatably connected to the first fixed seat 53, and the third hydraulic cylinder 51 moves within the movable groove 54. The driving end of the third hydraulic cylinder 51 is rotatably connected to one end of the rotating plate 56, and the other end of the rotating plate 56 is fixedly connected to the arc-shaped plate 55. The middle part of the rotating plate 56 is rotatably connected to the end of the T-shaped plate 52 away from the material storage assembly 3. The T-shaped plate 52 is fixedly installed on the top of the hollow support frame 1. The T-shaped plate 52 is located on the outer side of the lower end of the material storage assembly 3, and the top of the T-shaped plate 52 is flush with the top of the lower end of the material storage assembly 3. The arc-shaped plate 55 moves within the positioning welding assembly 2.

[0058] The end of the T-shaped plate 52 near the inclined L-shaped guide plate 32 is in contact with the inclined L-shaped guide plate 32.

[0059] The arc-shaped plate 55 and the rotating plate 56 are located inside the T-shaped plate 52;

[0060] The drive end of the third hydraulic cylinder 51 of the auxiliary feeding component 5 is retracted. The third hydraulic cylinder 51 drives the rotating plate 56 to rotate. The end of the rotating plate 56 near the storage component 3 rotates to a position lower than the top of the T-shaped plate 52. The end of the rotating plate 56 away from the storage component 3 is higher than the top of the T-shaped plate 52. The drive end of the pushing component 4 at the lower end of the storage component 3 pushes the metal tube at the lower end of the storage component 3 upward. The upward-pushed metal tube moves to the T-shaped plate 52 of the auxiliary feeding component 5 and then rotates into the arc plate 55. The drive end of the third hydraulic cylinder 51 extends. The third hydraulic cylinder 51 drives the rotating plate 56 near the end of the storage component 3 to rotate to a position higher than the top of the T-shaped plate 52. The rotating plate 56 drives the arc plate 55 to rotate downward. The arc plate 55 places the metal tube supported by the arc plate 55 onto the positioning welding component 2. When the metal tube falls into the positioning welding component 2, the metal tube has no power, which can prevent the metal tube from rolling out of the positioning welding component 2 and facilitate the stable delivery of the metal tube in the storage component 3 to the positioning welding component 2.

[0061] Please see Figure 1 , Figure 4 , Figure 5 and Figure 11 The positioning welding assembly 2 includes a first welding assembly, multiple sets of rolling support assemblies and two sets of flange feeding assemblies. The first welding assembly is connected to the inner and outer welding assemblies 7. The multiple sets of rolling support assemblies and the two sets of flange feeding assemblies are all fixedly connected to the hollow support frame 1. The multiple sets of rolling support assemblies are located between the two sets of flange feeding assemblies. The multiple sets of rolling support assemblies are divided into two equal parts.

[0062] The first welding assembly includes a first welding torch 210 and a first connecting frame 211. The first connecting frame 211 is fixedly connected to the inner and outer welding assemblies 7, and the bottom of the first connecting frame 211 is fixedly connected to the first welding torch 210.

[0063] The rolling support assembly includes a first roller 212 and a first support frame 213. The first support frame 213 is fixedly installed on the top of the hollow support frame 1. The first support frame 213 is divided into two equal parts and is arranged on the left and right. The first roller 212 is rotatably connected to the first support frame 213. The outer wall of the first roller 212 is in close contact with the outer wall of the metal tube.

[0064] The flange loading assembly includes a first hydraulic cylinder 21, a moving plate 22, a guide rail assembly 23, a first fixed frame 24, a sliding column 27, a first connecting block 28, a chuck 29, a second connecting block 214, and a rotating shaft 215. The guide rails of the first hydraulic cylinder 21, the first fixed frame 24, and the guide rail assembly 23 are all fixedly installed on the top of the hollow support frame 1. The drive end of the first hydraulic cylinder 21 is fixedly connected to the moving plate 22, and the moving plate 22 is fixedly connected to the slider of the guide rail assembly 23. The upper end of the moving plate 22 is rotatably connected to the rotating shaft 215, and one end of the rotating shaft 215 is connected to the second connecting block 214. 4. Fixed connection: The inner end of the second connecting block 214 is fixedly connected to the chuck 29. The other end of the rotating shaft 215 is fixedly connected to one end of the first connecting block 28. The other end of the first connecting block 28, away from the side wall of the moving plate 22, is fixedly connected to the sliding column 27. The upper end of the first fixed frame 24 is provided with a horizontal groove 26 and a straight groove 25. The horizontal groove 26 is located inside the straight groove 25. The outer end of the horizontal groove 26 is connected to the top of the straight groove 25. The end of the sliding column 27 away from the first connecting block 28 is in contact with the horizontal groove 26 or the straight groove 25 and is slidably connected. When the chuck 29 is in a horizontal state, the chuck 29 is coaxially set with the metal tube.

[0065] When the chuck 29 of the flange loading assembly of the tack welding assembly 2 opens, the first hydraulic cylinder 21 drives the moving plate 22 to move outward. Under the action of the guide rail assembly 23, the moving plate 22 moves along the guide rail assembly 23. The moving plate 22 drives the rotating shaft 215 to move, the rotating shaft 215 drives the first connecting block 28 to move, the first connecting block 28 drives the sliding column 27 to move, and the sliding column 27 moves outward along the transverse groove 26. The chuck 29 remains horizontal, and the chuck 29 separates from the flange of the tack welded metal pipe. The moving plate 22 continues to move, and the sliding column 27 moves into the straight groove 25. The straight groove 25 guides the sliding column 27 downward. The sliding column 27 drives the first connecting block 28 to rotate downwards, the first connecting block 28 drives the rotating shaft 215 to rotate, the rotating shaft 215 drives the second connecting block 214 to rotate upwards, and the second connecting block 214 drives the chuck 29 to rotate upwards to a vertical position, placing the flange into the chuck 29, which then fixes the flange. The drive end of the pusher assembly 4, located directly below the positioning welding assembly 2, pushes the metal tube for positioning welding inside the positioning welding assembly 2 upwards through the horizontal guide assembly 6 into the inner and outer welding assembly 7. Then, the arc plate 55 places the metal tube supported by the arc plate 55 onto the first roller 21 of the rolling support assembly of the positioning welding assembly 2. On the 2nd, multiple sets of first rollers 212 support the metal tube. The first hydraulic cylinder 21 drives the moving plate 22 to move inward. Under the action of the guide rail assembly 23, the moving plate 22 moves along the guide rail assembly 23. The moving plate 22 drives the rotating shaft 215 to move. The rotating shaft 215 drives the first connecting block 28 to move. The first connecting block 28 drives the sliding column 27 to move. The sliding column 27 moves upward along the straight groove 25. The sliding column 27 drives the first connecting block 28 to rotate upward. The first connecting block 28 drives the rotating shaft 215 to rotate. The rotating shaft 215 drives the second connecting block 214 to rotate downward. The second connecting block 214 drives the chuck 29 to rotate downward. Rotating to a horizontal position, the sliding column 27 continues to move along the transverse groove 26, and the chuck 29 remains horizontal and moves towards the metal tube. The chuck 29 drives the flange to move until it contacts the end of the metal tube. The chuck 29 is coaxially set with the metal tube, which facilitates flange loading. Then, the inner and outer welding assembly 7 drives the first connecting frame 211 of the first welding assembly to move downward. The first connecting frame 211 drives the first welding gun 210 to move downward. The first welding gun 210 moves to the set position and is started. The first welding gun 210 performs spot welding and positioning treatment on the metal tube and the flange, realizing the positioning welding of the flange and the metal tube without manual processing, which is convenient for practical use.

[0066] Please see Figure 1 , Figure 8 The horizontal guide assembly 6 includes a first support plate 61 and a horizontal plate 62. The horizontal plate 62 is fixedly installed on the top of the hollow support frame 1, and the first support plate 61 is fixedly installed on the top of the horizontal plate 62. The first support plate 61 is horizontally set, and the top of the first support plate 61 is flush with the top of the second roller 720.

[0067] The drive end of the pusher assembly 4 located directly below the positioning welding assembly 2 pushes the metal tube in the first support frame 213 upward. After the metal tube in the first support frame 213 is separated from the first roller 212, it enters the inner and outer welding assembly 7 through the first support plate 61.

[0068] Please see Figures 1-7 , Figure 10 The inner and outer welding assembly 7 includes a set of rotating assemblies, two sets of pressure roller assemblies, two sets of outer welding assemblies, two sets of height adjustment assemblies, two sets of inner welding assemblies, and two sets of end calibration assemblies. The set of rotating assemblies and the two sets of height adjustment assemblies are fixedly connected to the top of the hollow support frame 1. The two sets of height adjustment assemblies are located at the front and rear ends of the set of rotating assemblies. The two sets of outer welding assemblies are connected to the two sets of height adjustment assemblies one-to-one. The pressure roller assembly is fixedly installed on the inner wall of the outer welding assembly. The end calibration assembly is fixedly connected to the outer wall of the outer welding assembly. The inner welding assembly is fixedly connected to the side wall of the height adjustment assembly.

[0069] The rotating assembly includes a motor 711, a first transmission assembly 715, a first horizontal shaft 716, a second transmission assembly 717, a second horizontal shaft 718, a fourth support frame 719, and a second roller 720. One set of motors 711 and multiple sets of fourth support frames 719 are fixedly installed on the top of the hollow support frame 1. The multiple sets of fourth support frames 719 are divided into two parts and arranged left and right. Each set of fourth support frames 719 is rotatably connected to the first horizontal shaft 716. The two sets of first horizontal shafts 716 are connected to each other through the first transmission assembly 715. One set of first horizontal shafts 716 is fixedly connected to the drive end of the motor 711. Multiple sets of second transmission assemblies 717 are connected to the first horizontal shaft 716. The second transmission assembly 717 is connected to the second horizontal shaft 718. The second horizontal shaft 718 is fixedly connected to the second roller 720. The second roller 720 is arranged one-to-one with the fourth support frame 719. The second roller 720 and the fourth support frame 719 are rotatably connected.

[0070] The second transmission assembly 717 and the first transmission assembly 715 adopt synchronous belt transmission assemblies;

[0071] The height adjustment assembly includes a first guide rod 71, a first cylinder 72, a third support frame 73, and a horizontal movable plate 74. The third support frame 73 is fixedly installed on the top of the hollow support frame 1. The first cylinder 72 is fixedly installed on the top of the third support frame 73. The horizontal movable plate 74 is fixedly installed on the drive end of the first cylinder 72. The top of the horizontal movable plate 74 is fixedly connected to the first guide rod 71. The top of the first guide rod 71 is limited and slidably connected to the top of the third support frame 73. An external welding assembly is fixedly connected to one end of the horizontal movable plate 74.

[0072] The other end of the horizontal movable plate 74 is fixedly connected to the first connecting frame 211.

[0073] The external welding assembly includes a first mounting plate 75 and a second welding gun 76. The first mounting plate 75 is fixedly mounted on one end of the horizontal movable plate 74, the second welding gun 76 is fixedly mounted on the bottom of the first mounting plate 75, the pressure roller assembly is fixedly mounted on the inner wall of the first mounting plate 75, and the end calibration assembly is fixedly connected to the outer wall of the first mounting plate 75.

[0074] The pressure roller assembly includes a pressure roller 77 and a pressure roller mounting frame 78. The pressure roller mounting frame 78 is fixedly installed on the inner wall of the first mounting plate 75, and the pressure roller 77 is rotatably installed on the bottom of the pressure roller mounting frame 78.

[0075] The end calibration assembly includes an L-shaped plate 721 and a positioning side plate 722. The L-shaped plate 721 is fixedly installed on the outer wall of the first mounting plate 75. The bottom of the L-shaped plate 721 is fixedly connected to the positioning side plate 722. The inner wall of the positioning side plate 722 is provided with a slanted groove 723. The distance between the inner walls of the positioning side plates 722 of the two sets of end calibration assemblies is the distance between the outer walls of the two sets of flanges of the metal pipe. The distance between the two sets of L-shaped plates 721 is greater than the distance between the outer walls of the two sets of flanges of the metal pipe. When the pressure roller 77 contacts the top of the metal pipe, the positioning side plate 722 does not contact the pipe.

[0076] The internal welding assembly includes a side plate 79, a second cylinder 710, a second guide rod 712, a third welding torch 713, and a second mounting plate 714. The side plate 79 is fixedly installed on the side wall of the third support frame 73. The outer wall of the side plate 79 is fixedly connected to the second cylinder 710. The second cylinder 710 is fixedly connected to the second mounting plate 714. The upper end of the second mounting plate 714 is fixedly connected to the second guide rod 712. The second guide rod 712 is slidably connected to the sliding hole opened in the side plate 79. The lower end of the inner wall of the second mounting plate 714 is fixedly connected to the third welding torch 713.

[0077] After the welding of the third welding gun 713 and the second welding gun 76 is completed, the first cylinder 72 of the height adjustment component drives the horizontal movable plate 74 to move upward. The horizontal movable plate 74 drives the first mounting plate 75 of the outer welding component to move upward. The first mounting plate 75 drives the pressure roller 77 of the pressure roller assembly, the second welding gun 76 and the positioning side plate 722 of the end calibration assembly to move upward to the uppermost position. The second cylinder 710 of the inner welding component drives the second mounting plate 714 to move outward. The second mounting plate 714 drives the third welding gun 713 to move outward to the outermost position. The driving end of the pusher assembly 4 located below the inner and outer welding components 7 pushes the metal tube welded in the inner and outer welding components 7 out of the second roller 720 of the inner and outer welding components 7 and then discharges it from the discharge assembly 8.

[0078] The drive end of the pusher assembly 4 located directly below the positioning welding assembly 2 pushes the metal tube being positioned and welded inside the positioning welding assembly 2 upward through the horizontal guide assembly 6 into the second roller 720.

[0079] The first cylinder 72 of the height adjustment assembly drives the horizontal movable plate 74 to move downwards. The horizontal movable plate 74 drives the first mounting plate 75 of the outer welding assembly to move downwards. The first mounting plate 75 drives the pressure roller 77 of the pressure roller assembly, the second welding gun 76, and the positioning side plate 722 of the end calibration assembly to move downwards. The L-shaped plate 721 drives the positioning side plate 722 to contact the flange side wall first. The two sets of positioning side plates 722 guide and limit the two ends of the pipe, so that the metal pipe is in the set position, which is conducive to the position to be welded. The positioning side plate 722 continues to move downwards until it separates from the inner edge of the top of the flange. At this time, the pressure roller 77 moves downwards to contact the top of the metal pipe, and the welding end of the second welding gun 76 is facing the outer weld. The second cylinder 710 of the inner welding assembly drives the second mounting plate 714 to move inwards. The second mounting plate 714 drives the third welding gun 713 to move inwards to the inner weld position.

[0080] The second welding torch 76, the third welding torch 713, and the motor 711 are started. The motor 711 drives a set of first horizontal shafts 716 to rotate, which in turn drives another set of first horizontal shafts 716 to rotate via the first transmission assembly 715. The first horizontal shafts 716 drive the second horizontal shafts 718 to rotate via the second transmission assembly 717. The second horizontal shafts 718 drive the second rollers 720 to rotate. All the second rollers 720 rotate in the same direction. All the second rollers 720 and the two sets of pressure rollers 77 work together to drive the metal pipe to rotate. The rotating metal pipe drives the flange to rotate. The second welding torch 76 performs external welding on the flange and the outer connection of the metal pipe, and the third welding torch 713 performs internal welding on the flange and the inner connection of the metal pipe, thus realizing the welding of the flange and the inner and outer connections of the metal pipe and achieving automated welding.

[0081] Please see Figure 1 , Figure 8 The discharge assembly 8 includes a second support plate 81 and an inclined guide plate 82. The second support plate 81 is fixedly installed on the other end of the top of the hollow support frame 1. The inclined guide plate 82 is fixedly installed on the top of the second support plate 81. The end of the inclined guide plate 82 near the storage assembly 3 is lower than the top of the second roller 720 near the other end of the hollow support frame 1, and the end of the inclined guide plate 82 near the storage assembly 3 is located at the inner edge of the second roller 720 near the other end of the hollow support frame 1.

[0082] The drive end of the pusher assembly 4 located below the inner and outer welding assembly 7 pushes the metal tube welded inside the inner and outer welding assembly 7 out of the second roller 720 of the inner and outer welding assembly 7, and then out through the inclined guide plate 82.

[0083] Please see Figure 1 , Figure 8The feeding assembly 4 includes a second hydraulic cylinder 41, a second support frame 42, a straight plate 43, an inclined plate 44, and a straight baffle 45. The second hydraulic cylinder 41 is fixedly installed at the bottom of the hollow support frame 1. The second support frame 42 is fixedly installed on the drive end of the second hydraulic cylinder 41. Six sets of straight plates 43 are fixedly installed in a rectangular array at the top of the second support frame 42. The straight plates 43 penetrate the top of the hollow support frame 1 and are fixedly connected to the inclined plates 44. The end of the inclined plate 44 near the storage assembly 3 is higher than the end of the storage assembly 3 away from the inclined plate 44. The inclined plate 44 located directly below the storage assembly 3 is fixedly connected to the straight baffle 45 away from the side wall of the inner and outer welding assembly 7. The inclined plate 44 below the positioning welding assembly 2 is located between the first support frames 213 on the left and right sides. The inclined plate 44 below the inner and outer welding assembly 7 is located between the fourth support frames 719 on the left and right sides.

[0084] When material needs to be pushed, the second hydraulic cylinder 41 drives the second support frame 42 to move upward, the second support frame 42 drives the straight plate 43 to move upward, the straight plate 43 drives the inclined plate 44 to move upward, the inclined plate 44 below the storage assembly 3 pushes the metal tube in the storage assembly 3 into the auxiliary unloading assembly 5, the inclined plate 44 below the inner and outer welding assembly 7 pushes the metal tube between the second rollers 720 and the metal tube between the first support frame 213, making it easier to push the metal tube to move. When the inclined plate 44 below the storage assembly 3 moves upward, it drives the straight baffle 45 to move upward. The straight baffle 45 moves upward to prevent other metal tubes from falling below the inclined plate 44 below the storage assembly 3, ensuring that the inclined plate 44 below the storage assembly 3 moves downward normally.

[0085] Example 2: Figures 1-11 As shown, in a preferred embodiment of the present invention, a welding method using an automatic metal pipe welding device includes the following steps:

[0086] Step 1: The metal tubes are stored one by one in the inclined storage assembly 3;

[0087] Step 2: The flange is then installed onto both ends of the metal pipe inside the locating welding assembly 2. The inner and outer welding assembly 7 performs rotational welding on the inner and outer connections of the locating welded metal pipe and flange.

[0088] Step 3: The drive end of the pusher assembly 4 moves upward. The drive end of the pusher assembly 4, located below the inner and outer welding assembly 7, pushes the metal tube welded inside the inner and outer welding assembly 7 out of the inner and outer welding assembly 7 and then discharges it from the discharge assembly 8. The drive end of the pusher assembly 4, located directly below the positioning welding assembly 2, pushes the metal tube of the positioning welding assembly 2 upward through the horizontal guide assembly 6 into the inner and outer welding assembly 7. The drive end of the pusher assembly 4, located at the lower end of the storage assembly 3, pushes the metal tube at the lower end of the storage assembly 3 onto the auxiliary unloading assembly 5. The auxiliary unloading assembly 5 then places the metal tube into the positioning welding assembly 2. The positioning welding assembly 2 then installs the flanges to both ends of the metal tube inside the positioning welding assembly 2.

[0089] Step 4: Repeat steps 2-3.

[0090] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic metal pipe welding device, comprising a hollow support frame (1), characterized in that: The hollow support frame (1) has an inclined storage component (3) connected to one end of its top. The lower end of the material storage component (3) is fitted with two sets of auxiliary feeding components (5) for buffering feeding. The two sets of auxiliary feeding components (5) are set opposite to each other, and the auxiliary feeding components (5) are fixedly connected to the hollow support frame (1). The hollow support frame (1) is fixedly connected to a tack welding assembly (2) for tack welding of flanges and metal pipes, and the tack welding assembly (2) is located at the end of the auxiliary feeding assembly (5) away from the storage assembly (3); The hollow support frame (1) is fixedly connected to multiple sets of horizontal material guiding assemblies (6) for horizontal material guiding, and the horizontal material guiding assembly (6) is located at the end of the positioning welding assembly (2) away from the material storage assembly (3); The hollow support frame (1) is fixedly connected to an inner and outer welding assembly (7) for welding the inner and outer connections of the flange and the metal pipe end. The inner and outer welding assembly (7) is located at the end of the horizontal material guide assembly (6) away from the material storage assembly (3), and the inner and outer welding assembly (7) is fixedly connected to the positioning welding assembly (2). The hollow support frame (1) is fixedly connected to multiple sets of discharge components (8) for discharging materials, and the discharge components (8) are located at the end of the inner and outer welding components (7) away from the storage components (3); The hollow support frame (1) is fixedly connected to a material pushing component (4) for pushing materials. The material pushing component (4) has three sets of driving ends, which are located at the lower end of the material storage component (3), directly below the positioning welding component (2), and directly below the inner and outer welding components (7), respectively. The material storage assembly (3) includes multiple sets of support legs (31) and two sets of inclined L-shaped guide plates (32). The two sets of inclined L-shaped guide plates (32) are set opposite to each other. The multiple sets of support legs (31) are divided into two equal parts, and each set of support legs (31) is fixedly installed at equal intervals at the bottom of the inclined L-shaped guide plate (32). The support legs (31) are fixedly connected to the top of the hollow support frame (1), and the inclined L-shaped guide plate (32) is set at an angle. The auxiliary feeding assembly (5) includes a third hydraulic cylinder (51), a T-shaped plate (52), a first fixed seat (53), an arc-shaped plate (55), and a rotating plate (56). The hollow support frame (1) has a movable slot (54) at the top. The first fixed seat (53) is fixedly installed inside the top of the hollow support frame (1). The bottom of the third hydraulic cylinder (51) is rotatably connected to the first fixed seat (53), and the third hydraulic cylinder (51) moves within the movable slot (54). The driving end of the third hydraulic cylinder (51) is connected to the rotating plate. One end of the rotating plate (56) is rotatably connected, and the other end of the rotating plate (56) is fixedly connected to the arc plate (55). The middle part of the rotating plate (56) is rotatably connected to the end of the T-shaped plate (52) away from the material storage assembly (3). The T-shaped plate (52) is fixedly installed on the top of the hollow support frame (1). The T-shaped plate (52) is located on the outside of the lower end of the material storage assembly (3). The top of the T-shaped plate (52) is flush with the top of the lower end of the material storage assembly (3). The arc plate (55) moves within the positioning welding assembly (2).

2. The automatic metal pipe welding device according to claim 1, characterized in that, The locating welding assembly (2) includes a first welding assembly, multiple sets of rolling support assemblies and two sets of flange feeding assemblies. The first welding assembly is connected to the inner and outer welding assemblies (7). The multiple sets of rolling support assemblies and the two sets of flange feeding assemblies are all fixedly connected to the hollow support frame (1). The multiple sets of rolling support assemblies are located between the two sets of flange feeding assemblies. The multiple sets of rolling support assemblies are divided into two equal parts.

3. The automatic metal pipe welding device according to claim 2, characterized in that, The first welding assembly includes a first welding torch (210) and a first connecting frame (211). The first connecting frame (211) is fixedly connected to the inner and outer welding assemblies (7), and the bottom of the first connecting frame (211) is fixedly connected to the first welding torch (210).

4. The automatic metal pipe welding device according to claim 3, characterized in that, The rolling support assembly includes a first roller (212) and a first support frame (213). The first support frame (213) is fixedly installed on the top of the hollow support frame (1). The first support frame (213) is divided into two equal parts and is set on the left and right. The first roller (212) is rotatably connected to the first support frame (213). The outer wall of the first roller (212) is in contact with the outer wall of the metal tube.

5. The automatic metal pipe welding device according to claim 4, characterized in that, The flange loading assembly includes a first hydraulic cylinder (21), a moving plate (22), a guide rail assembly (23), a first fixed frame (24), a sliding column (27), a first connecting block (28), a chuck (29), a second connecting block (214), and a rotating shaft (215). The guide rails of the first hydraulic cylinder (21), the first fixed frame (24), and the guide rail assembly (23) are all fixedly installed on the top of the hollow support frame (1). The driving end of the first hydraulic cylinder (21) is fixedly connected to the moving plate (22), the moving plate (22) is fixedly connected to the slider of the guide rail assembly (23), the upper end of the moving plate (22) is rotatably connected to the rotating shaft (215), and one end of the rotating shaft (215) is connected to the second connecting block (215). 4) Fixed connection: The inner end of the second connecting block (214) is fixedly connected to the chuck (29), the other end of the rotating shaft (215) is fixedly connected to one end of the first connecting block (28), the other end of the first connecting block (28) is fixedly connected to the sliding column (27) on the side wall away from the moving plate (22), the upper end of the first fixed frame (24) is provided with a horizontal groove (26) and a straight groove (25), the horizontal groove (26) is located inside the straight groove (25), the outer end of the horizontal groove (26) is connected to the top of the straight groove (25), the end of the sliding column (27) away from the first connecting block (28) is in contact with the horizontal groove (26) or the straight groove (25) and is slidably connected, and the chuck (29) is coaxially set with the metal tube when the chuck (29) is in a horizontal state.

6. The automatic metal pipe welding device according to claim 5, characterized in that, The inner and outer welding assembly (7) includes a set of rotating components, two sets of pressure roller assemblies, two sets of outer welding assemblies, two sets of height adjustment assemblies, two sets of inner welding assemblies and two sets of end calibration assemblies. The set of rotating components and the two sets of height adjustment assemblies are fixedly connected to the top of the hollow support frame (1). The two sets of height adjustment assemblies are located at the front and rear ends of the set of rotating components. The two sets of outer welding assemblies are connected to the two sets of height adjustment assemblies one by one. The pressure roller assembly is fixedly installed on the inner wall of the outer welding assembly. The end calibration assembly is fixedly connected to the outer wall of the outer welding assembly. The inner welding assembly is fixedly connected to the side wall of the height adjustment assembly.

7. The automatic metal pipe welding device according to claim 6, characterized in that, The pushing assembly (4) includes a second hydraulic cylinder (41), a second support frame (42), a straight plate (43), an inclined plate (44), and a straight baffle (45). The second hydraulic cylinder (41) is fixedly installed at the bottom of the hollow support frame (1), and the second support frame (42) is fixedly installed on the driving end of the second hydraulic cylinder (41). A rectangular array of six straight plates (43) is fixedly installed on the top of the second support frame (42). The straight plates (43) penetrate the top of the hollow support frame (1) and the inclined plate (45). 4) Fixed connection, the end of the inclined plate (44) near the storage component (3) is higher than the end of the storage component (3) away from the inclined plate (44), the inclined plate (44) located directly below the storage component (3) is fixedly connected to the straight baffle (45) away from the side wall of the inner and outer welding component (7), the inclined plate (44) below the positioning welding component (2) is located between the first support frame (213) on the left and right sides, and the inclined plate (44) below the inner and outer welding component (7) is located directly below the inner and outer welding component (7).

8. A welding method, utilizing the automatic metal pipe welding device according to claim 7, characterized in that, Includes the following steps: Step 1: The metal tubes are stored one by one in the inclined storage assembly (3); Step 2: Position welding assembly (2) Then install the flange to both ends of the metal pipe inside the positioning welding assembly (2), and perform rotation welding on the inner and outer connection of the metal pipe and flange after positioning welding; Step 3: The drive end of the pusher assembly (4) moves upward. The drive end of the pusher assembly (4) located below the inner and outer welding assembly (7) pushes the metal tube welded inside the inner and outer welding assembly (7) out of the inner and outer welding assembly (7) and then discharges it from the discharge assembly (8). The drive end of the pusher assembly (4) located directly below the positioning welding assembly (2) pushes the metal tube of the positioning welding assembly (2) upward through the horizontal guide assembly (6) into the inner and outer welding assembly (7). The drive end of the pusher assembly (4) located at the lower end of the storage assembly (3) pushes the metal tube at the lower end of the storage assembly (3) onto the auxiliary unloading assembly (5). The auxiliary unloading assembly (5) then puts the metal tube into the positioning welding assembly (2). The positioning welding assembly (2) then installs the flanges to both ends of the metal tube inside the positioning welding assembly (2). Step 4: Repeat steps 2-3.

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