High-precision butt welding aluminum-plastic composite pipe argon arc welding device

Abstract

The utility model provides a high-precision butt welding aluminum-plastic composite pipe argon arc welding device which comprises a three-axis moving platform, the three-axis moving platform is movably driven by a lead screw transmission assembly, an X-axis moving motor is driven in the X-axis direction, a first displacement sensor is fixed on a first bearing table, the X-axis moving motor is connected with the first displacement sensor, and a second displacement sensor is fixed on the first bearing table. A second displacement sensor is fixed on the second bearing table and connected with the Y-axis moving motor in the Y-axis direction, a third displacement sensor is fixed on the third bearing table and connected with the Z-axis moving motor in the Z-axis direction, and a tungsten electrode welding pipe assembly is fixed on the third bearing table and connected with the Z-axis moving motor. A tungsten electrode welding pipe is fixed on a welding pipe fixing frame in the tungsten electrode welding pipe assembly, and the third bearing table is connected with the welding pipe fixing frame. The argon arc welding device for the high-precision butt welding aluminum-plastic composite pipe is convenient to operate, and the welding process control precision is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to aluminium -plastic composite pipe processing technical field especially relates to a kind of high-precision butt welding aluminium-plastic composite pipe argon arc welding device. BACKGROUND

[0002] Butt welding aluminium-plastic composite pipe is based on high-strength special alloy aluminium strip butt welding (argon arc welding) aluminium pipe, and inner and outer layers use imported polyethylene resin of same material, aluminium pipe and resin are bonded with high-performance hot melt adhesive, and it is formed by step-by-step extrusion composite.

[0003] As pressure pipeline, its long-term hydrostatic curve shows that, when 95 DEG C, curve still does not appear inflection point, stress and strain do not appear attenuation phenomenon, indicating that composite pipe has obvious metal pipe characteristics.And the resin layer of inner and outer wall composite makes pipeline surface smooth and clean, non-corrosion, non-fouling, and pipeline safe use has reliable theoretical and experimental basis.

[0004] At present, the excellent pressure-bearing performance of butt welding aluminium-plastic composite pipe mainly comes from aluminium alloy layer, and the level of welding technology directly affects the performance and quality of pipe material.Through argon arc welding technology, the electric arc heat generated between tungsten electrode and aluminium alloy strip melts the welding position into a whole, and the relative position of tungsten needle and aluminium alloy strip is crucial during welding, and the current welding process control precision is low, and the deviation caused by vertical or horizontal distance has great influence on welding position. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a kind of high-precision butt welding aluminium-plastic composite pipe argon arc welding device to solve the problem of low welding process control precision and great influence of deviation caused by vertical or horizontal distance on welding position.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] The utility model provides a kind of high-precision butt welding aluminium plastic composite pipe argon arc welding device, including, tungsten electrode welding pipe assembly, the three-axis mobile platform is moved to tungsten electrode welding pipe X, Y, Z three directions, and the three-axis mobile platform is moved by screw rod transmission component transmission, X axis direction is driven by X axis moving motor and first bearing platform is fixed with first displacement sensor, the X axis moving motor is connected with the first displacement sensor, Y axis direction is driven by Y axis moving motor and second bearing platform is fixed with second displacement sensor, the Y axis moving motor is connected with the second displacement sensor, Z axis direction is driven by Z axis moving motor and third bearing platform is fixed with third displacement sensor, the Z axis moving motor is connected with the third displacement sensor, tungsten electrode welding pipe assembly is fixed on the third bearing platform, tungsten electrode welding pipe is fixed on the welding pipe fixing frame in tungsten electrode welding pipe assembly, the welding pipe fixing frame is connected on the third bearing platform.

[0008] Further, X axis direction is equipped with X axis moving component, X axis moving motor in the X axis moving component is connected with first screw rod by first coupling, the driving end of the first screw rod is fixed with first screw rod fixed axle seat by first bearing, the driven end of the first screw rod is fixed with second screw rod fixed axle seat by second bearing, first bearing platform is connected with first screw rod by first screw rod nut, the bottom of the first bearing platform is fixed with first sliding block, the first sliding block is symmetrically equipped with four with the horizontal axis and vertical axis of the first bearing platform, the first sliding block is slidably connected on X axis sliding rail, X axis sliding rail is fixed on the upper surface of X axis fixed platform symmetrically with the horizontal axis of X axis fixed platform, first displacement sensor is arranged on the side of the first bearing platform, first motor encoder is equipped on the X axis moving motor, and the first motor encoder is connected with the first displacement sensor.

[0009] Further, Y axis direction is equipped with Y axis moving component, Y axis moving motor in the Y axis moving component is connected with second screw rod by second coupling, the driving end of the second screw rod is fixed with third screw rod fixed axle seat by third bearing, the driven end of the second screw rod is fixed with fourth screw rod fixed axle seat by fourth bearing, second bearing platform is connected with second screw rod by second screw rod nut, the bottom of the second bearing platform is fixed with second sliding block, the second sliding block is symmetrically equipped with four with the horizontal axis and vertical axis of the second bearing platform, the second sliding block is slidably connected on Y axis sliding rail, Y axis sliding rail is fixed on the upper surface of Y axis fixed platform symmetrically with the central axis of Y axis fixed platform, second displacement sensor is arranged on the side of the second bearing platform, second motor encoder is equipped on the Y axis moving motor, and the second motor encoder is connected with the second displacement sensor, Y axis fixed platform bottom is connected with first bearing platform, and Y axis fixed platform is perpendicular to X axis fixed platform.

[0010] Further, the Z-axis direction is provided with a Z-axis moving assembly, a Z-axis moving motor in the Z-axis moving assembly is connected with a third screw rod through a third coupling, the driving end of the third screw rod is fixed with a fifth screw rod fixed shaft base through a fifth bearing, the driven end of the third screw rod is fixed with a sixth screw rod fixed shaft base through a sixth bearing, a third bearing table is connected with the third screw rod through a third screw rod nut, the bottom of the third bearing table is fixed with a third sliding block, the third sliding block is symmetrically provided with four third sliding blocks along the horizontal axis and the vertical axis of the third bearing table, the third sliding block is slidably connected with a Z-axis sliding guide, the Z-axis sliding guide is symmetrically fixed on the upper surface of a Z-axis fixed platform along the central axis of the Z-axis fixed platform, a third displacement sensor is arranged on the side of the third bearing table, a third motor encoder is arranged on the Z-axis moving motor, the third motor encoder is connected with the third displacement sensor, the bottom of the Z-axis fixed platform is connected with the second bearing table through a connecting fixed plate, the horizontal plate of the connecting fixed plate is fixed with the second bearing table, the vertical plate of the connecting fixed plate is connected with the bottom of the Z-axis fixed platform, and the Z-axis fixed platform is perpendicular to the Y-axis fixed platform and the X-axis fixed platform.

[0011] Further, the welding pipe fixing frame comprises a first welding fixing seat, a second welding fixing seat and a horizontal fixing plate, the first welding fixing seat is slidably fixed in the third bearing table, the horizontal fixing plate is connected with the first welding fixing seat and fixed with a tungsten electrode welding pipe on the top of the first welding fixing seat, a semicircular fixing plate is arranged on the horizontal fixing plate at the position where the tungsten electrode welding pipe is fixed, the semicircular fixing plate is connected with the tungsten electrode welding pipe through bolts on the two sides of the semicircular fixing plate and the semicircular combination on the top of the horizontal fixing plate, the lower part of the second welding fixing seat is fixed on the bottom of the third bearing table and connected with the first welding fixing seat through a moving screw rod, and a rotating handle is arranged on the top of the moving screw rod.

[0012] Further, the bottom of the first welding fixing seat of the welding pipe fixing frame is provided with a rectangular protrusion matched with a rectangular groove on the upper part of the third bearing table, and the upper surface of the third bearing table is provided with a scale.

[0013] Further, a plurality of waist holes are arranged on the Y-axis fixed platform, the X-axis fixed platform and the Z-axis fixed platform.

[0014] Compared with the prior art, the argon arc welding device for high-precision butt welding of aluminum plastic composite pipes has the following advantages:

[0015] (1) The three-axis moving platform in the utility model can realize high-precision positioning and ensure the accurate position of the tungsten electrode in the welding process. Through the accurate control of the XYZ three directions, the displacement sensor can monitor the three-axis moving position of the moving platform in real time, provide high-precision feedback, ensure the accuracy of the motor movement, combine the real-time observable position of the tungsten electrode, timely discover and correct the deviation, and reduce the influence of human factors.

[0016] The utility model discloses a tungsten electrode is fixed on the welding pipe fixed frame, promotes tungsten electrode and aluminum alloy band position precision, can real -time determination welding pipe fixed frame's position through the scale and carries out accurate record, the combination three -axis mobile platform can make tungsten electrode and aluminum alloy band position precision greatly promote, realize the convenient operation, and welding process control precision obtains the substantial promotion, thereby promotes the product performance stability of aluminum plastic composite pipe. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the description and are incorporated in and constitute a part of this description. The embodiments of the utility model, and their description, are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0018] In the drawings:

[0019] Fig. 1 It is the high -precision butt joint welding aluminum plastic composite pipe argon arc welding device's axle side schematic view that the utility model embodiment is described;

[0020] Fig. 2 It is the high -precision butt joint welding aluminum plastic composite pipe argon arc welding device's main view schematic view that the utility model embodiment is described.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 1, X -axis fixed platform, 2, X -axis sliding guide, 3, X -axis moving motor, 4, first coupling, 5, first screw, 6, second screw fixed axle seat, 7, first screw fixed axle seat, 8, Y -axis fixed platform, 9, Y -axis sliding guide, 10, fourth screw fixed axle seat, 11, first sliding block, 12, first bearing table, 13, second screw, 14, second bearing table, 15, connecting fixed plate, 16, Z -axis moving motor, 17, fifth screw fixed axle seat, 18, third screw, 19, Z -axis fixed platform, 20, Z -axis sliding guide, 21, third sliding block, 22, third bearing table, 23, Y -axis moving motor, 24, sixth screw fixed axle seat, 25, third screw fixed axle seat, 26, welding pipe fixed frame, 27, tungsten electrode welding pipe, 28, second sliding block, 29, first welding fixed seat, 30, second welding fixed seat. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0024] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0025] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0026] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0027] Referring to Figs. 1-2 As shown in the figure, the embodiment provides a high-precision butt welding aluminum plastic composite pipe argon arc welding device, which comprises a three-axis moving platform and a tungsten electrode welding pipe assembly. The three-axis moving platform moves the tungsten electrode welding pipe in X, Y and Z directions, and the three-axis moving platform is moved by a screw rod transmission assembly. The X-axis direction is driven by an X-axis moving motor 3, and a first displacement sensor is fixed on a first load-bearing table 12. The X-axis moving motor 3 is connected with the first displacement sensor. The Y-axis direction is driven by a Y-axis moving motor 23, and a second displacement sensor is fixed on a second load-bearing table 14. The Y-axis moving motor 23 is connected with the second displacement sensor. The Z-axis direction is driven by a Z-axis moving motor 16, and a third displacement sensor is fixed on a third load-bearing table 22. The Z-axis moving motor 16 is connected with the third displacement sensor. The tungsten electrode welding pipe assembly is fixed on the third load-bearing table 22. A tungsten electrode welding pipe 27 is fixed on a welding pipe fixing frame 26 in the tungsten electrode welding pipe assembly. The welding pipe fixing frame 26 is connected to the third load-bearing table 22.

[0028] Specifically, in this embodiment, the X-axis direction is provided with an X-axis moving assembly, an X-axis moving motor 3 in the X-axis moving assembly is connected with a first lead screw 5 through a first coupling 4, a driving end of the first lead screw 5 is fixed with a first lead screw fixed shaft seat 7 through a first bearing, a driven end of the first lead screw 5 is fixed with a second lead screw fixed shaft seat 6 through a second bearing, a first load-bearing table 12 is connected with the first lead screw 5 through a first lead screw nut, a bottom of the first load-bearing table 12 is fixed with a first sliding block 11, the first sliding block 11 is symmetrically provided with four first sliding blocks 11 along a horizontal axis and a vertical axis of the first load-bearing table 12, the first sliding block 11 is slidingly connected with an X-axis sliding guide rail 2, the X-axis sliding guide rail 2 is symmetrically fixed on a top surface of an X-axis fixed platform 1 along a horizontal axis of the X-axis fixed platform 1, a first displacement sensor is arranged on a side of the first load-bearing table 12, a first motor encoder is arranged on the X-axis moving motor 3, and the first motor encoder is connected with the first displacement sensor.

[0029] Specifically, in this embodiment, the Y-axis direction is provided with a Y-axis moving assembly, a Y-axis moving motor 23 in the Y-axis moving assembly is connected with a second lead screw 13 through a second coupling, a driving end of the second lead screw 13 is fixed with a third lead screw fixed shaft seat 25 through a third bearing, a driven end of the second lead screw 13 is fixed with a fourth lead screw fixed shaft seat 10 through a fourth bearing, a second load-bearing table 14 is connected with the second lead screw 13 through a second lead screw nut, a bottom of the second load-bearing table 14 is fixed with a second sliding block 28, the second sliding block 28 is symmetrically provided with four second sliding blocks 28 along a horizontal axis and a vertical axis of the second load-bearing table 14, the second sliding block 28 is slidingly connected with a Y-axis sliding guide rail 9, the Y-axis sliding guide rail 9 is symmetrically fixed on a top surface of a Y-axis fixed platform 8 along a central axis of the Y-axis fixed platform 8, a second displacement sensor is arranged on a side of the second load-bearing table 14, a second motor encoder is arranged on the Y-axis moving motor 23, the second motor encoder is connected with the second displacement sensor, a bottom of the Y-axis fixed platform 8 is connected with the first load-bearing table 12, and the Y-axis fixed platform 8 is perpendicular to the X-axis fixed platform 1.

[0030] Specifically, in this embodiment, the Z-axis direction is provided with a Z-axis moving assembly. A Z-axis moving motor 16 in the Z-axis moving assembly is connected with a third screw rod 18 through a third coupling. The driving end of the third screw rod 18 is fixed with a fifth screw rod fixed shaft seat 17 through a fifth bearing. The driven end of the third screw rod 18 is fixed with a sixth screw rod fixed shaft seat 24 through a sixth bearing. A third load bearing table 22 is connected with the third screw rod 18 through a third screw rod nut. The third load bearing table 22 is fixed with a third sliding block 21 at the bottom. The third sliding block 21 is symmetrically provided with four third sliding blocks 21 along the horizontal axis and the vertical axis of the third load bearing table 22. The third sliding block 21 is slidingly connected with a Z-axis sliding guide rail 20. The Z-axis sliding guide rail 20 is symmetrically fixed on the upper surface of a Z-axis fixed platform 19 along the central axis of the Z-axis fixed platform 19. A third displacement sensor is arranged on the side of the third load bearing table 22. A third motor encoder is arranged on the Z-axis moving motor 16 and connected with the third displacement sensor. The bottom of the Z-axis fixed platform 19 is connected with the second load bearing table 14 through a connecting fixed plate 15. The horizontal plate of the connecting fixed plate 15 is fixed with the second load bearing table 14. The vertical plate of the connecting fixed plate 15 is connected with the bottom of the Z-axis fixed platform 19. The Z-axis fixed platform 19 is perpendicular to the Y-axis fixed platform 8 and the X-axis fixed platform 1.

[0031] Specifically, in this embodiment, the welding pipe fixing frame 26 includes a first welding fixed seat 29, a second welding fixed seat 30 and a horizontal fixed plate. The first welding fixed seat 29 is slidingly fixed in the third load bearing table 22. The horizontal fixed plate is connected with the first welding fixed seat 29 and fixed with a tungsten electrode welding pipe 27 at the top of the first welding fixed seat 29. A semicircular fixed plate is arranged at the position where the tungsten electrode welding pipe 27 is fixed on the horizontal fixed plate. The semicircular fixed plate is connected with the semicircular fixed plate on the top of the horizontal fixed plate through bolts to fix the tungsten electrode welding pipe 27. The lower part of the second welding fixed seat 30 is fixed on the bottom of the third load bearing table 22 and connected with the first welding fixed seat 29 through a moving screw rod. A rotating handle is arranged on the top of the moving screw rod.

[0032] Specifically, in this embodiment, the bottom of the first welding fixed seat 29 of the welding pipe fixing frame 26 is provided with a rectangular protrusion matched with a rectangular groove on the upper part of the third load bearing table 22. The upper surface of the third load bearing table 22 is provided with a scale.

[0033] Specifically, in this embodiment, a plurality of waist holes are arranged on the Y-axis fixed platform, the X-axis fixed platform 1 and the Z-axis fixed platform 19.

[0034] The three-axis moving platform can realize high-precision positioning, ensures the position of the tungsten electrode in the welding process is accurate. Through the accurate control of XYZ three directions, the displacement sensor can monitor the three-axis moving position of the moving platform in real time, provide high-precision feedback, ensure the accuracy of the motor movement, combined with the real-time observable position of the tungsten electrode, find and correct the deviation in time, reduce the influence of human factors. The tungsten electrode is fixed on the welding pipe fixing frame, the position precision of the tungsten electrode and the aluminum alloy strip is improved, the position of the welding pipe fixing frame can be determined in real time through the scale and recorded accurately, combined with the three-axis moving platform, the position precision of the tungsten electrode and the aluminum alloy strip can be greatly improved, the operation convenience is realized, the welding process control precision is greatly improved, and the product performance stability of the aluminum-plastic composite pipe is improved.

[0035] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-precision butt-welding aluminum-plastic composite pipe argon arc welding device, characterized in that, The application relates to a tungsten electrode welding pipe assembly and a three-axis moving platform, wherein the three-axis moving platform moves the tungsten electrode welding pipe in X, Y and Z directions, and the three-axis moving platform is moved by a screw transmission assembly; the X-axis moving motor (3) drives the X-axis direction, and a first displacement sensor is fixed on a first bearing table (12); the X-axis moving motor (3) is connected with the first displacement sensor; the Y-axis moving motor (23) drives the Y-axis direction, and a second displacement sensor is fixed on a second bearing table (14); the Y-axis moving motor (23) is connected with the second displacement sensor; the Z-axis moving motor (16) drives the Z-axis direction, and a third displacement sensor is fixed on a third bearing table (22); the Z-axis moving motor (16) is connected with the third displacement sensor; the third bearing table (22) is fixed with the tungsten electrode welding pipe assembly; the tungsten electrode welding pipe (27) is fixed on the welding pipe fixing frame (26) in the tungsten electrode welding pipe assembly; and the third bearing table (22) is connected with the welding pipe fixing frame (26).

2. The high-precision butt-welded aluminum-plastic composite pipe argon arc welding device according to claim 1, characterized in that, The X-axis moving assembly is arranged in the X-axis direction; the X-axis moving motor (3) is connected with the first screw rod (5) through the first shaft coupling (4); the driving end of the first screw rod (5) is fixed with the first screw rod fixed shaft base (7) through the first bearing; the driven end of the first screw rod (5) is fixed with the second screw rod fixed shaft base (6) through the second bearing; the first bearing table (12) is connected with the first screw rod (5) through the first screw rod nut; the first bearing table (12) is fixed with the first sliding block (11) at the bottom; the first sliding block (11) is symmetrically arranged with the horizontal axis and the vertical axis of the first bearing table (12); the first sliding block (11) is slidably connected with the X-axis sliding guide (2); the X-axis sliding guide (2) is symmetrically fixed on the upper surface of the X-axis fixed platform (1) with the horizontal axis of the X-axis fixed platform (1); the first displacement sensor is arranged on the side of the first bearing table (12); the first motor encoder is arranged on the X-axis moving motor (3); and the first motor encoder is connected with the first displacement sensor.

3. The high-precision butt-welded aluminum plastic composite pipe argon arc welding device according to claim 1, characterized in that, Y axis direction is equipped with Y axis moving assembly, Y axis moving motor (23) is connected with second screw rod (13) through second coupling in Y axis moving assembly, driving end of second screw rod (13) is fixed with third screw rod fixed axle seat (25) through third bearing, driven end of second screw rod (13) is fixed with fourth screw rod fixed axle seat (10) through fourth bearing, second bearing table (14) is connected with second screw rod (13) through second screw rod nut, the bottom of second bearing table (14) is fixed with second sliding block (28), the second sliding block (28) is symmetrically provided with four with the horizontal axis and vertical axis of second bearing table (14), the second sliding block (28) is slidably connected on Y axis sliding guide (9), Y axis sliding guide (9) is symmetrically fixed on the upper surface of Y axis fixed platform (8) with the central axis of Y axis fixed platform (8), second displacement sensor is arranged on the side of second bearing table (14), second motor encoder is arranged on Y axis moving motor (23), and the second motor encoder is connected with the second displacement sensor, the bottom of Y axis fixed platform (8) is connected with first bearing table (12), and Y axis fixed platform (8) is perpendicular to X axis fixed platform (1).

4. The high-precision butt-welded aluminum-plastic composite pipe argon arc welding device according to claim 1, characterized in that, Z axis direction is equipped with Z axis moving assembly, Z axis moving motor (16) is connected with third screw rod (18) through third coupling in Z axis moving assembly, driving end of third screw rod (18) is fixed with fifth screw rod fixed axle seat (17) through fifth bearing, driven end of third screw rod (18) is fixed with sixth screw rod fixed axle seat (24) through sixth bearing, third bearing table (22) is connected with third screw rod (18) through third screw rod nut, the bottom of third bearing table (22) is fixed with third sliding block (21), the third sliding block (21) is symmetrically provided with four with the horizontal axis and vertical axis of third bearing table (22), the third sliding block (21) is slidably connected on Z axis sliding guide (20), Z axis sliding guide (20) is symmetrically fixed on the upper surface of Z axis fixed platform (19) with the central axis of Z axis fixed platform (19), third displacement sensor is arranged on the side of third bearing table (22), third motor encoder is arranged on Z axis moving motor (16), and the third motor encoder is connected with the third displacement sensor, the bottom of Z axis fixed platform (19) is connected with second bearing table (14) through connecting fixed plate (15), the horizontal plate of connecting fixed plate (15) is fixed with second bearing table (14), the vertical plate of connecting fixed plate (15) is connected with the bottom of Z axis fixed platform (19), and Z axis fixed platform (19) is perpendicular to Y axis fixed platform (8) and X axis fixed platform (1).

5. The high-precision butt-welded aluminum plastic composite pipe argon arc welding device according to claim 1, characterized in that, The welding pipe fixing frame (26) comprises a first welding fixing seat (29), a second welding fixing seat (30) and a horizontal fixing plate, the first welding fixing seat (29) is slidably fixed in the third bearing table (22), the horizontal fixing plate is connected with the first welding fixing seat (29) and the tungsten electrode welding pipe (27) is fixed on the top of the first welding fixing seat (29), a semicircular fixing plate is arranged on the horizontal fixing plate at the position where the tungsten electrode welding pipe (27) is fixed, the semicircular fixing plate is connected with the top of the horizontal fixing plate through bolts to fix the tungsten electrode welding pipe (27), the lower part of the second welding fixing seat (30) is fixed on the bottom of the third bearing table (22) and is connected with the first welding fixing seat (29) through a moving screw, and a rotating handle is arranged on the top of the moving screw.

6. The high-precision butt-welded aluminum plastic composite pipe argon arc welding device according to claim 5, characterized in that, The bottom of the first welding fixing seat (29) of the welding pipe fixing frame (26) is provided with a rectangular protrusion matched with a rectangular groove on the upper part of the third bearing table (22), and the upper surface of the third bearing table (22) is provided with a scale.

7. The high-precision butt-welded aluminum plastic composite pipe argon arc welding device according to claim 1, characterized in that, A plurality of waist holes are arranged on the Y-axis fixed platform (8), the X-axis fixed platform (1) and the Z-axis fixed platform (19).

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