Welding tool for welding aluminum alloy fence and welding method thereof

Abstract

The invention discloses a welding tool for welding an aluminum alloy fence and a welding method of the welding tool, and relates to the technical field of plasma welding. Comprising two cross rods and a plurality of vertical rods which are placed on a welding rack, and an electric track is fixedly installed on the welding rack; comprising the following steps that S1, a transverse rod is placed on a supporting rod in a clamped mode, vertical rods are sequentially placed on supporting blocks in a clamped mode, and at the moment, the two ends of each vertical rod are tightly attached to the supporting rod. The device has the advantages that all-dimensional automatic operation of fence welding is achieved through cooperative control of the servo motor and the electric guide rail, the servo motor has more control modes during operation, the plasma welding gun can be driven to precisely ascend and descend in the vertical direction, the consistency of the welding depth is ensured, horizontal transverse far-away movement during fence taking and placing is ensured, and the welding efficiency is improved. And moreover, the automatic adjustment of the plasma welding gun relative to the angle of the same fence can be automatically completed while moving in the vertical direction, so that the welding operation is simpler and more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of plasma welding, and in particular to a welding tool for welding aluminum alloy fences and a welding method thereof. Background Art

[0002] During the production and preparation process of aluminum alloy fences, it is necessary to use a plasma welding gun to perform welding operations. Especially in some smaller factories, due to funding issues, handheld welding is mostly used. When manual welding is used, workers need to frequently adjust the welding gun angle and position. The welding quality depends on the operator's technical level. For this reason, we propose a welding tool for welding aluminum alloy fences to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems raised in the background technology and to propose a welding tool and a welding method for welding aluminum alloy fences.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A welding tool for welding aluminum alloy fences, comprising two horizontal bars and a plurality of vertical bars placed on a welding platform, wherein an electric track is fixedly mounted on the welding platform, a sliding frame is mounted on the electric track, a servo motor is fixedly mounted on the sliding frame, and a lifting plate is slidably mounted on the servo motor via a vertical moving member, a lifting frame is fixedly mounted on one side of the sliding frame, and a fixed plate is slidably mounted on the lifting frame; A rack 1 is installed on the fixed plate for upper limit sliding, and a damping sliding arrangement is provided between the lifting plate and the rack 1. A reciprocating screw 2 is installed on the lifting plate for damping rotation, and the reciprocating screw 2 is installed with a gear 2 meshing with the rack 1 through a one-way bearing 2; A plasma welding gun is installed between the lifting plate and the second reciprocating screw via an orientation changing component; A transverse position adjustment component is installed between the servo motor, the vertical moving component and the lifting frame.

[0005] A method for welding an aluminum alloy fence, using the welding tool for welding an aluminum alloy fence described above, comprises the following steps: S1: Place the horizontal rod on the support rod, and then place the vertical rod on the support block. At this time, both ends of the vertical rod are tightly fitted with the support rod. S2: the servo motor is started, the servo motor works to drive the driving shaft to rotate, the driving shaft rotates to drive the upper one-way bearing one to rotate, at this time, the lower one-way bearing one is in a rotatable state, the one-way bearing one drives the reciprocating screw one to rotate through the cooperation of the two gears one, the reciprocating screw one rotates to drive the fixed plate and the structure one mounted on the fixed plate to move up through the fixed frame, at this time, the plasma welding gun also moves up, and the plasma welding gun moves while welding, thereby completing welding on one side; S3: when the plasma welding gun moves to the upper side of the vertical rod, the plasma welding gun stops working, at this time, the rack one is at the highest position, and the lifting plate continues to move up to drive the gear two to rotate, at this time, the one-way bearing two is in a self-locking state, the gear two rotates to drive the rack two to move through the cooperation of the reciprocating screw two and the ball nut, and the rack two moves to drive the plasma welding gun to rotate by 180 degrees through the transmission gear; S4: the whole part is controlled to move through the electric track, and the plasma welding gun works in this process to weld the upper surface of the vertical rod and the contact part of the horizontal rod; S5: after moving to the appropriate position, the plasma welding gun is controlled to move down to complete welding on the other side edge; S6: the above operations are repeated to complete the local welding of the horizontal rod and the vertical rod, then the lower one-way bearing one is controlled to rotate, at this time, the shaft two is driven to rotate, the shaft two rotates to drive the reciprocating screw three to rotate through the cooperation of the two helical gears, and the reciprocating screw three rotates to drive the fixed plate and the lifting plate to move outward through the pushing frame, so that the whole part is pushed to the outside of the supporting rod, then the horizontal rod and the vertical rod are manually taken down to be turned over, and subsequently, only the welding on one side of the upper surface can be performed through the cooperation of the plasma welding gun and the electric track.

[0006] Compared with the prior art, the present application has the following advantages: 1: through the cooperative control of the servo motor and the electric guide rail, omnibearing automatic operation of fence welding is realized, the servo motor has more control modes when running, can drive the plasma welding gun to precisely ascend in the vertical direction, ensures the consistency of welding depth and the horizontal transverse moving away of the fence when being taken and placed, facilitates the taking and placing operation of the fence workpiece, and can automatically complete the automatic adjustment of the relative angle of the plasma welding gun to the fence while moving in the vertical direction, so that the welding operation is more convenient.

[0007] 2: the plasma welding gun-vertical rod included angle can be flexibly adjusted according to the fence size and the welding seam position, and different welding requirements can be adapted.

[0008] 3: the horizontal transverse fast forward and backward has the advantage that the distance between the plasma welding gun and the fence can be adjusted before and after welding, the fence is convenient to take and place, and the precise welding operation is convenient to perform. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 2 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 1 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 3 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 1 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 4 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 3 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 5 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 4 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 6 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 5 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 7 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 4 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 8 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 7 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 9 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 7 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 10 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 9 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 11 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 10 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 12 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 9 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 13 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 12 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 14 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 13 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 15 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 14 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 16 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 1 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 17 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 15 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 18 A structural diagram of a welding tool for welding an aluminum alloy fence and a welding method thereof according to the present application; Figure 14Structure diagram between the fixed plate and the lifting frame and between the fixed frame and the lifting plate.

[0010] In the figure: 1, welding rack; 2, support rod; 3, support block; 4, cross rod; 5, vertical rod; 6, electric track; 7, sliding frame; 8, servo motor; 9, shaft two; 10, reciprocating screw one; 11, gear one; 12, fixed frame; 13, lifting frame; 14, fixed plate; 15, lifting plate; 16, rack one; 17, reciprocating screw two; 18, gear two; 19, rack two; 20, transmission gear; 21, angle adjusting seat; 22, plasma welding gun; 23, mounting frame; 24, reciprocating screw three; 25, helical gear; 26, pushing frame. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0012] Reference Figures 1-18The utility model provides a welding tool for welding aluminum alloy fence, including two cross bars 4 placed on the welding rack 1 and a plurality of vertical poles 5, the cross bar 4 and vertical pole 5 shown in the figure are welded to complete the fence, for the convenience of understanding, so it is named, the upper and lower poles of the fence are named as cross bar 4, and the middle is named as vertical pole 5, the welding rack 1 is composed of two plate bodies, and the two plate bodies are fixedly connected through a plurality of L-shaped rod frames, and the lower plate body can also be arranged, such as being arranged as double-layer, and the height between the two can be adjusted, and the height-adjustable mode is arranged as hydraulic telescopic mode, and the L-shaped rod frame for fixing on both sides can also be arranged with telescopic self-locking function, such as electric push rod, a plurality of supporting rods 2 and a plurality of supporting blocks 3 are fixedly installed on the lower plate body, the cross bar 4 is clamped on the corresponding supporting rod 2, and the vertical pole 5 is clamped on the corresponding supporting block 3, the supporting rod 2 and the supporting block 3 can be arranged in detachable fixed mode, so as to be suitable for welding fences of different sizes, further, a strip-shaped groove is formed on the side close to the two supporting rods 2, the supporting rod 2 is clamped on the strip-shaped groove during placement, the upper end of the supporting block 3 is provided with U-shaped opening, and the vertical pole 5 is conveniently arranged, further, the strip-shaped groove and the U-shaped opening can be arranged, and the purpose is to increase the stability during placement, such as arranging air bags on the inner walls of the strip-shaped groove and the U-shaped opening, the air bags are made of flexible material, when the cross bar 4 or the vertical pole 5 is placed and contacts, the gas under the air bag is extruded to both sides, so that the extrusion effect on both sides is improved, the elastic rubber gasket can also be arranged on both sides, and the stability during placement is improved directly by the elastic rubber gasket, the placement is the most simple, and the hard abutting or clamping function can also be arranged on the basis of the device, and the part is common in the prior art, and will not be described in detail.

[0013] Refer to Figures 1-18 The electric track 6 is fixedly installed on the welding rack 1, the sliding frame 7 is installed on the electric track 6, the sliding frame 7 can move in the electric track 6, the part is a mature technology, and only the schematic is shown in the figure, the electric guide rail shown in the figure is a "hui" type electric guide rail, and the electric guide rail system can realize closed loop motion track, and the basic structure and working principle are as follows: linear guide rail module: a plurality of linear electric sliding rails (such as belt / screw drive) are connected through corner modules (such as 90 DEG turner); driving mode: servo motor, stepper motor or DC motor is matched with synchronous belt / gear transmission; control system: PLC or motion controller programming realizes closed loop path control; the sliding frame 7 includes sliding frame rod and support block, two sliding frame rods are slidingly installed on the electric track 6, and the lower ends of the two sliding frame rods are fixedly installed with a support block, in order to further improve the stability during use, the sliding frame 7 can be slidingly arranged on the welding rack 1, and specifically, the sliding frame 7 is slidingly arranged on the upper plate body.

[0014] The sliding frame 7 is fixedly provided with a servo motor 8, specifically fixedly provided on the supporting block. The servo motor 8 is slidably provided with a lifting plate 15 through a vertical moving component. The lifting plate 15 comprises a long rod and a horizontal plate. The long rod is slidably provided on the upper end of the strip-shaped block I. The lower end of the long rod is fixedly provided with the horizontal plate. When needed, the servo motor 8 can control the vertical moving component to work, thereby driving the lifting plate 15 to move in the vertical direction. The purpose of this part is to drive the subsequent plasma welding gun 22 to move in the vertical direction, so as to complete the welding of the contact part between the two sides of the vertical rod 5 and the horizontal rod 4. The vertical moving component comprises a transmission assembly, a reciprocating screw I 10 and a fixed frame 12. The reciprocating screw I 10 is rotatably provided on the sliding frame 7. The transmission assembly is installed between the servo motor 8 and the reciprocating screw I 10. The fixed frame 12 is installed on the reciprocating screw I 10 through a ball nut. The fixed frame 12 comprises a lifting horizontal plate, a frame rod I and a strip-shaped block I. The lifting horizontal plate is installed on the reciprocating screw I 10 through a ball nut. The lifting horizontal plate is slidably arranged with the shaft II 9. The lifting horizontal plate is fixedly provided with the strip-shaped block I on one side through the frame rod I. The lower end of the strip-shaped block I is provided with a stepped sliding groove. The upper end of the lifting plate 15 is limitingly and slidably installed on the strip-shaped block I. The transmission assembly comprises a one-way bearing I and a gear I 11. The driving end of the servo motor 8 is rotatably penetrated through the sliding frame 7 and is provided with two one-way bearings I. The self-locking directions of the two one-way bearings I are opposite. One gear I 11 is fixedly installed on the upper one-way bearing I and the reciprocating screw I 10. The two gears I 11 are engaged. Further, a cover body can be fixedly provided on the sliding frame 7. The cover body is used for isolating and protecting the gear 11 from being directly exposed to the outside. The cover body is not shown in the figure. Further, the rotation between the reciprocating screw I 10 and the sliding frame 7 can be set as damping rotation, so as to improve the accuracy during the use of the whole device. At this time, a damping bearing can be arranged at the connection between the two.

[0015] Referring to Figures 1-18 One side of the sliding frame 7 is fixedly provided with a lifting frame 13. The lifting frame 13 is slidably provided with a fixed plate 14. The lifting frame 13 comprises a frame rod II and a strip-shaped block II. One side of the supporting block is fixedly provided with a strip-shaped block II through the frame rod II. The lower end of the strip-shaped block II is also provided with a stepped sliding groove. The upper end of the fixed plate 14 is limitingly and slidably installed on the strip-shaped block II. The rack one 16 is slidingly installed on the fixed plate 14 (one side of the vertical plate in the fixed plate 14 is provided with a stepped sliding groove, one side of the rack one 16 is fixedly installed with a stepped sliding block matched with the stepped sliding groove on the vertical plate, the stepped sliding groove here has a limiting effect. When this part moves up, the rack one 16 will move up synchronously under the damping effect; when it is in contact with the top wall of the stepped sliding groove, the hard blocking force is greater than the damping force, and then when the lifting plate 15 continues to move, the rack one 16 will not rotate, at this time the gear two 18 will rotate under the action of the one-way bearing two);The damping sliding between the lifting plate 15 and the rack one 16 is provided (the horizontal plate in the lifting plate 15 is fixedly installed with a damping sliding block, and the damping sliding block is provided in a stepped manner, one side of the rack one 16 is provided with a stepped groove matched with the damping sliding block);A reciprocating screw two 17 is rotatably installed on the lifting plate 15, and the reciprocating screw two 17 is installed with a gear two 18 engaged with the rack one 16 through a one-way bearing two.

[0016] Referring to Figures 1-18, the plasma welding gun 22 is installed between the lifting plate 15 and the reciprocating screw two 17 through the azimuth changing member; the plasma welding is a high-energy density welding process, which uses a compressed arc (plasma arc) to melt metal, including a plasma welding gun (generates and controls a plasma arc, which is the core component of the system), a power supply system (provides direct current or pulse current to maintain a stable plasma arc), a cooling system (water cooling or air cooling to prevent the welding gun from overheating), a gas control system (provides plasma gas Ar, H2, He, etc. and shielding gas Ar, CO2, etc.), a monitoring and feedback system (arc voltage, current, gas flow monitoring to ensure welding quality), which is a mature technology. Only the plasma welding gun 22 is controlled in the figure, and the remaining existing parts are not drawn; the azimuth changing member can drive the plasma welding gun 22 to move in the vertical direction during work, and also produces the required azimuth changing effect during movement, which is convenient for changing the azimuth after welding on one side of the vertical rod 5 (the final result is to rotate 180° symmetrically), and is convenient for welding on the other side; the azimuth changing member includes a rack two 19, a mounting rod frame, a vertical shaft, a transmission gear 20, and an angle adjusting seat 21. The mounting rod frame is fixedly installed on the lifting plate 15 and is composed of a circular block and a connecting rod, and the connecting rod is fixedly connected with the circular block and the lifting plate 15. The vertical shaft is rotatably installed on the mounting rod frame, and the transmission gear 20 is fixedly installed on the vertical shaft. The vertical shaft is rotatably installed on the circular block. The lower end of the vertical shaft is provided in a spherical shape, and the angle adjusting seat 21 is rotatably installed at the lower end of the vertical shaft. The plasma welding gun 22 is fixedly connected with the angle adjusting seat 21. The setting here is convenient for adjusting the included angle between the lower end of the plasma welding gun 22 and the welding position as required. The damping rotation here can be selected as friction resistance. For example, the friction resistance during rotation is increased between the two, so that the deflection does not occur in the normal use state, and the adjustment can be made only when a larger external force (such as manual rotation) is applied. At this time, the larger external force can be manually applied, or other driving modes can be set.

[0017] Referring to Figures 1-18, the end of the reciprocating screw rod two 17 away from the gear two 18 is provided with a reciprocating thread, a vertical rod is installed on the reciprocating thread through a ball nut, the lower end of the vertical rod is fixedly installed with a rack two 19 engaged with the transmission gear 20; a transverse positioning member is installed between the servo motor 8 and the vertical moving member and the lifting frame 13; the transverse positioning member is used to make the structure arranged below the fixed frame 12 and the lifting frame 13 move in the horizontal direction when needed, and then move to one side of the fence, so as to facilitate the taking of the fence; the transverse positioning member comprises a shaft two 9, a mounting bracket 23, a reciprocating screw rod three 24, a bevel gear 25 and a pushing frame 26, the mounting bracket 23 is fixedly installed on the lifting frame 13, the reciprocating screw rod three 24 is rotatably installed on the mounting bracket 23, the shaft two 9 is installed on the lower one-way bearing one, and the fixed frame 12 slides through the shaft two 9, one bevel gear 25 is fixedly installed on the reciprocating screw rod three 24 and the shaft two 9, and the two bevel gears 25 are engaged, the end of the reciprocating screw rod three 24 is provided with a reciprocating thread, the pushing frame 26 is installed on the reciprocating screw rod three 24 through a ball nut, and the pushing frame 26 is matched with the fixed plate 14 and the lifting plate 15; the pushing frame 26 comprises a disc, a cross rod and a clamping seat, the pushing frame 26 is installed on the ball nut, two cross rods are fixedly installed on the side of the pushing frame 26 away from the bevel gear 25, one clamping seat is fixedly installed at the end of each cross rod, and the clamping seat is provided with an open end, and the upper ends of the fixed plate 14 and the lifting plate 15 respectively slide through the corresponding clamping seat.

[0018] Referring to Figures 1-18 A welding method of a welded aluminum alloy fence, using the welding tool for welding an aluminum alloy fence described above, comprising the following steps: S1: the cross rod 4 is clamped and placed on the support rod 2, and the vertical rod 5 is clamped and placed on the support block 3 in turn, at this time, the two ends of the vertical rod 5 are tightly fitted with the support rod 2 respectively; S2: turn on the servo motor 8, the servo motor 8 works to drive the driving shaft to rotate, the driving shaft rotates to first drive the upper one-way bearing one to rotate, at this time, the lower one-way bearing one is in a rotatable state, the one-way bearing one drives the reciprocating screw rod one 10 to rotate through the cooperation of the two gear one 11, the reciprocating screw rod one 10 rotates to drive the fixed plate 14 and the structure one installed on the fixed plate 14 to move up through the fixed frame 12, at this time, the plasma welding gun 22 also moves up, and the movement makes the plasma welding gun 22 weld at the same time, and then the welding on one side is completed; S3: when the plasma welding gun 22 moves to the upper side of the vertical rod 5, the plasma welding gun 22 stops working, at this time, the rack one 16 is at the highest position, and the lifting plate 15 continues to move up to make the gear two 18 rotate, at this time, the one-way bearing two is in a self-locking state, the gear two 18 rotates to drive the rack two 19 to move through the cooperation of the reciprocating screw rod two 17 and the ball nut, the rack two 19 moves to drive the plasma welding gun 22 to rotate 180° through the transmission gear 20; S4: the whole part is moved by the electric track 6, and the plasma welding gun 22 works to weld the part of the upper surface of the vertical rod 5 in contact with the horizontal rod 4; S5: after moving to the appropriate position, the plasma welding gun 22 is controlled to move downward to complete the welding of the other side edge; S6: the above operation is repeated to complete the partial welding of the horizontal rod 4 and the vertical rod 5, and then the lower one-way bearing is controlled to rotate, at this time, the shaft 2 9 is rotated, the shaft 2 9 is rotated through the cooperation of the two bevel gears 25 to drive the reciprocating screw 3 4 to rotate, the reciprocating screw 3 4 is rotated through the pushing frame 26 to drive the fixed plate 1 4 and the lifting plate 1 5 to move outward, so that the whole part is pushed to the outside of the support rod 2, then the horizontal rod 4 and the vertical rod 5 are manually taken down to be turned over, and then the plasma welding gun 22 and the electric track 6 are used to weld only the upper surface on one side.

[0019] Further, the above-mentioned fixed connection should be understood in a broad sense unless otherwise specified and limited, for example, it can be welding, or gluing, or integrally formed, and other conventional means familiar to those skilled in the art.

[0020] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A welding tool for welding aluminum alloy fences, comprising two horizontal bars (4) and a plurality of vertical bars (5) placed on a welding stand (1), characterized in that: An electric track (6) is fixedly mounted on the welding platform (1), a sliding frame (7) is mounted on the electric track (6), a servo motor (8) is fixedly mounted on the sliding frame (7), a lifting plate (15) is slidably mounted on the servo motor (8) via a vertical moving member, a lifting frame (13) is fixedly mounted on one side of the sliding frame (7), and a fixed plate (14) is slidably mounted on the lifting frame (13); The fixed plate (14) is provided with a rack (16) for upper limit sliding, and a damping sliding arrangement is provided between the lifting plate (15) and the rack (16). A reciprocating screw (17) is provided on the lifting plate (15) for damping rotation, and the reciprocating screw (17) is provided with a gear (18) meshing with the rack (16) via a one-way bearing (2). A plasma welding gun (22) is installed between the lifting plate (15) and the second reciprocating screw (17) via an orientation-changing member; A transverse positioning component is installed between the servo motor (8), the vertical moving component, and the lifting frame (13).

2. The welding tool for welding aluminum alloy fence according to claim 1, characterized in that: The welding stand (1) is composed of two plates, and the two plates are fixedly connected by a plurality of L-shaped rods; Two support rods (2) and a plurality of support blocks (3) are fixedly mounted on the plate body located below, and the horizontal rods (4) are engaged with the corresponding support rods (2), and the vertical rods (5) are engaged with the corresponding support blocks (3).

3. The welding tool for welding aluminum alloy fence according to claim 2, characterized in that: The vertical moving member includes a transmission assembly, a reciprocating screw rod (10), and a fixed frame (12); the reciprocating screw rod (10) is rotatably mounted on the sliding frame (7); a transmission assembly is mounted between the servo motor (8) and the reciprocating screw rod (10); and the fixed frame (12) is mounted on the reciprocating screw rod (10) via a ball nut.

4. The welding tool for welding aluminum alloy fences according to claim 3, characterized in that: The transmission assembly includes a one-way bearing and a gear (11). The driving end of the servo motor (8) rotates through the sliding frame (7) and is installed with two one-way bearings. The two one-way bearings are self-locking in opposite directions. The one-way bearing located above and the reciprocating screw (10) are both fixedly installed with a gear (11), and the two gears (11) are meshed with each other.

5. The welding tool for welding aluminum alloy fences according to claim 4, characterized in that: The orientation changing component comprises a second rack (19), a mounting rod, a vertical shaft, a transmission gear (20), and an angle adjustment seat (21); the mounting rod is fixedly mounted on the lifting plate (15); the vertical shaft is rotatably mounted on the mounting rod; the transmission gear (20) is fixedly mounted on the vertical shaft; the lower end of the vertical shaft is spherically arranged; the angle adjustment seat (21) is damped and rotatably mounted on the lower end of the vertical shaft; and the plasma welding gun (22) is fixedly connected to the angle adjustment seat (21); The reciprocating screw rod 2 (17) has a reciprocating thread at one end away from the gear 2 (18), a vertical rod is mounted on the reciprocating thread via a ball nut, and a rack rod 2 (19) is fixedly mounted at the lower end of the vertical rod and meshed with the transmission gear (20); The mounting rod frame is composed of a round block and a connecting rod, and the connecting rod is fixedly connected to the round block and the lifting plate (15), and the vertical axis is rotatably mounted on the round block.

6. The welding tool for welding aluminum alloy fences according to claim 5, characterized in that: The lateral positioning component includes shaft 2 (9), a mounting frame (23), a reciprocating screw 3 (24), a bevel gear (25), and a pushing frame (26). The mounting frame (23) is fixedly mounted on the lifting frame (13), and the reciprocating screw 3 (24) is rotatably mounted on the mounting frame (23). Shaft 2 (9) is mounted on the one-way bearing 1 located below, and the fixed frame (12) slides through shaft 2 (9). A bevel gear (25) is fixedly mounted on both the shaft 2 (9) and the reciprocating screw 3 (24), and the two bevel gears (25) are meshed with each other. A reciprocating thread is provided at one end of the reciprocating screw 3 (24). The pushing frame (26) is mounted on the reciprocating screw 3 (24) through a ball nut, and the pushing frame (26) cooperates with the fixed plate (14) and the lifting plate (15).

7. The welding tool for welding aluminum alloy fences according to claim 6, characterized in that: The pushing frame (26) includes a disc, a cross bar, and a snap-fit ​​seat. The pushing frame (26) is mounted on the ball nut. Two cross bars are fixedly mounted on the side of the pushing frame (26) away from the bevel gear (25). One end of each of the two cross bars is fixedly mounted with a snap-fit ​​seat, and the snap-fit ​​seat is open at one end. The upper ends of the fixed plate (14) and the lifting plate (15) slide through the corresponding snap-fit ​​seats respectively.

8. The welding tool for welding aluminum alloy fences according to claim 7, characterized in that: The sliding frame (7) includes a sliding frame rod and a support block. Two sliding frame rods are slidably mounted on the electric track (6), and a support block is fixedly mounted on the lower ends of the two sliding frame rods. The servo motor (8) is fixedly mounted on the support block. The fixed frame (12) includes a lifting horizontal plate, a frame rod, and a strip block. The lifting horizontal plate is installed on the reciprocating screw (10) through a ball nut, and the lifting horizontal plate and the shaft (9) are slidably arranged. One side of the lifting horizontal plate is fixedly installed with a strip block through the frame rod, and a stepped slide groove is opened at the lower end of the strip block, and the upper end of the lifting plate (15) is limitedly slidably installed on the strip block. The lifting frame (13) includes a second frame rod and a second strip block. A second strip block is fixedly mounted on one side of the support block via the second frame rod, and a stepped slide is also provided at the lower end of the second strip block. The upper end of the fixed plate (14) is limitedly slidably mounted on the second strip block. The fixed plate (14) includes a short rod and a vertical plate. The upper limit sliding portion of the second strip block is provided with a short rod. The lower end of the short rod is fixedly provided with a vertical plate, and a step slide groove is also provided on one side of the vertical plate. A step slide block that matches the rack (16) is fixedly provided on one side of the rack. The lifting plate (15) includes a long rod and a horizontal plate. The upper limit sliding portion of the strip block is provided with a long rod. The lower end of the long rod is fixedly provided with a horizontal plate. A damping slider is fixedly provided on the horizontal plate. The damping slider is arranged in a stepped shape. A stepped groove matching the rack (16) is provided on one side.

9. A method for welding an aluminum alloy fence, using the welding tool for welding an aluminum alloy fence according to claim 8, characterized in that: The following steps are involved: S1: The horizontal rod (4) is clamped and placed on the support rod (2), and the vertical rod (5) is clamped and placed on the support block (3) in sequence, at which point both ends of the vertical rod (5) are tightly fitted with the support rod (2); S2: Turn on the servo motor (8), the servo motor (8) works to drive the drive shaft to rotate, the drive shaft first drives the upper one-way bearing to rotate, at this time the lower one-way bearing is in a rotatable state, the one-way bearing drives the reciprocating screw (10) to rotate through the cooperation of the two gears (11), the reciprocating screw (10) rotates through the fixed frame (12) to drive the fixed plate (14) and the structure installed on the fixed plate (14) to move upward, at this time the plasma welding gun (22) will also move upward, and the movement will cause the plasma welding gun (22) to weld, thereby completing the welding on one side; S3: When the plasma welding gun (22) moves to the top of the vertical rod (5), the plasma welding gun (22) stops working. At this time, the rack 1 (16) is at the highest point. The lifting plate (15) continues to move upward to cause the gear 2 (18) to rotate. At this time, the one-way bearing 2 is in a self-locking state. The rotation of the gear 2 (18) drives the rack 2 (19) to move through the cooperation of the reciprocating screw 2 (17) and the ball nut. The rack 2 (19) moves through the transmission gear (20) to drive the plasma welding gun (22) to rotate 180 degrees. S4: The entire portion is controlled to move by the electric track (6), and during this process, the plasma welding gun (22) works to weld the contact portion between the upper surface of the vertical rod (5) and the horizontal rod (4); S5: After moving to a suitable position, the plasma welding gun (22) is controlled to move downward to complete welding on the other side; S6: Repeat the above operation to complete the partial welding of the horizontal bar (4) and the vertical bar (5), and then control the rotation of the one-way bearing 1 below, which will drive the shaft 2 (9) to rotate. The rotation of the shaft 2 (9) drives the reciprocating screw 3 (24) to rotate through the cooperation of the two bevel gears (25). The rotation of the reciprocating screw 3 (24) drives the fixed plate (14) and the lifting plate (15) to move outward through the pushing frame (26), so that the entire part is pushed to the outside of the support bar (2), and then the horizontal bar (4) and the vertical bar (5) are manually removed and turned over. Subsequently, the plasma welding gun (22) is used in cooperation with the electric track (6) to weld only one side of the upper surface.

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