T-joint welding apparatus

Abstract

The present application relates to welding equipment technical field, specifically speaking is T joint welding equipment, including two supports and its in support one side's welding mechanism, four side positioning mechanisms all are installed with back blowing mechanism, four back blowing mechanisms all are installed with fixed mechanism, when welding workpiece 1 and workpiece 2, workpiece 1 is inserted into four side plates, the reserved mouth is set in the outside of the limiting seat, the limiting seat is convenient for the placement of workpiece 2, after workpiece 2 is placed on the limiting seat, the bottom of workpiece 2 and the outside of workpiece 1 are in contact, nitrogen is connected to the air inlet pipe of the four placing plate side walls during welding, the switch of the air inlet pipe is controlled by the controller, the work station being welded is connected to nitrogen, nitrogen is discharged to the air outlet groove through the air channel from multiple air outlets, the air outlet groove corresponds to the back side of workpiece 1 and workpiece 2, nitrogen can be back blown during welding, the welding position is cooled, nitrogen is evenly blown into the back of the weld, which plays a role in protecting the quality of the back of the weld.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to T-joint welding equipment. Background Technology

[0002] T-joint welding equipment generally uses argon arc welding, laser welding, and pneumatic welding machines. Argon arc welding machines generate an arc through a non-consumable tungsten electrode, combined with argon gas protection, to achieve high-quality T-joint welding. It is suitable for stainless steel, aluminum alloys, etc. When welding T-joints, special tooling is also required to fix the pipe and joint to avoid detachment and incomplete welding during the welding process.

[0003] However, currently, when welding T-joints using welding robots, the pipe is manually moved onto a placement plate. The top of the placement plate aligns with the inside of the pipe to support it. The T-joint is then placed outside the hole in the pipe. A limit seat is installed on the placement plate to support the T-joint and prevent displacement. Finally, a sealing cap with a stud is connected to the limit seat to secure the T-joint. The sealing cap needs to be tightened before welding the pipe to the T-joint. Loosening the sealing cap after completion is not only slow and cumbersome, but also makes the studs prone to stripping, preventing them from being tightened to secure the T-joint and affecting the stability of the welding. When welding pipes and T-joints with an argon arc welding machine, the temperature at the weld seam is high. The placement plate does not have a back-blowing mechanism to cool the back of the weld seam, resulting in high welding temperature and affecting welding quality. When welding T-joints and pipes, the pipe opening away from the side positioning mechanism is in an open state. During welding, air can easily enter from the pipe opening and mix with the nitrogen from the back-blowing mechanism, resulting in impure nitrogen and affecting the smoothness and brightness of the weld seam. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a T-joint welding device.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a T-joint welding device, including two supports and a welding mechanism disposed on one side of the supports, side positioning mechanisms are installed on both sides of the two supports, back blowing mechanisms are installed on the four side positioning mechanisms, fixing mechanisms are installed on the four back blowing mechanisms, and sealing mechanisms are installed on both sides of the two supports; the back blowing mechanism includes a side plate, a side plate is fixedly connected to the four side positioning mechanisms, a placement plate is installed on the side plate, an air inlet pipe is threaded to the side of the placement plate, an air passage is opened inside the four placement plates, the air passage is connected to the air inlet pipe, an air outlet is vertically opened on the four placement plates, an annular air outlet groove is opened on the surface of the four placement plates and communicates with the air outlet, and a limiting seat located inside the air outlet groove is welded on the four placement plates.

[0006] Specifically, the air passage has a ring structure, and the air outlets on the placement plate are arranged in a ring array with multiple outlets, and the air outlet grooves connected to the air outlets have a ring structure.

[0007] Specifically, the surfaces of the four placement plates are all arc-shaped, and the air intake pipe is located at the center of the side of the placement plate.

[0008] Specifically, the side positioning mechanism includes a fixed plate. Two fixed plates are fixedly connected to both sides of the two brackets by screws. The four side plates are fixedly connected to the four fixed plates respectively. The side plates are located above the center of the fixed plates. The side walls of the four fixed plates abut against the workpiece 1 sleeved on the outside of the side plates. The inner walls of the four workpiece 1 abut against the surfaces of the four placement plates respectively. The surfaces of the four workpiece 1 are provided with reserved openings. The four workpiece 1 are welded with workpiece 2 located at the reserved openings. The inner wall of the workpiece 2 fits against the outer wall of the limiting seat.

[0009] Specifically, the side positioning mechanism also includes magnetic suction columns and positioning holes. The side walls of the four fixed disks are each triangularly attached with three magnetic suction columns. The two ends of the four workpieces are each arranged in a ring array with multiple positioning holes. The magnetic suction columns are inserted into the positioning holes.

[0010] Specifically, the fixing mechanism includes a sliding shell. A hollow sliding shell is slidably connected to the center of each of the four limiting seats. A second driving component is installed at the bottom of each of the four side plates. The telescopic ends of the second driving components extend into the interior of the placement plate and are fixedly connected to the bottom of the sliding shell. A third driving component is installed inside each of the four sliding shells. A pressure seat is provided at the top of each of the four sliding shells. The telescopic end of the third driving component is fixedly connected to the bottom of the pressure seat. A fixing ring is welded to the top of each of the four sliding shells. Multiple sliding grooves are arranged in a circular array on each of the four fixing rings. Sliding blocks are slidably connected inside each of the multiple sliding grooves. Ring-shaped clamping grooves are formed on the side walls of the four fixing rings and the multiple sliding blocks. Ring springs are fitted inside each of the four clamping grooves. The corners of the ends of the multiple sliding blocks abut against the side walls of the pressure seat.

[0011] Specifically, the upper part of the side wall of the pressure seat is inclined, and the end cross-section of the slider has a U-shaped structure.

[0012] Specifically, the outer wall of the fixing ring is flush with the ends of the multiple sliders, and the diameter of the fixing ring is equal to the minimum diameter of the top of the limiting seat.

[0013] Specifically, the sealing mechanism includes crossbeams, with crossbeams horizontally welded to both sides of the two supports, and a drive component 1 installed at the end of each of the four crossbeams. A sealing plate is fixedly connected to the telescopic end of each of the four drive components 1, and the sealing plate is arranged opposite to the end of the workpiece 1.

[0014] Specifically, the welding mechanism includes a second mounting frame, which is located at the center of the outer side of the two supports. A welding robot is mounted on the second mounting frame. A first mounting frame is located on one side of the second mounting frame, which is equipped with an argon arc welding machine and an operating screen. The operating screen is electrically connected to the argon arc welding machine.

[0015] The beneficial effects of this invention are:

[0016] 1. The T-joint welding equipment of the present invention has side positioning mechanisms installed on both sides of the two supports, and each of the four side positioning mechanisms is equipped with a back-blowing mechanism. When welding workpiece one (pipe) and workpiece two (T-joint), workpiece one is inserted into the four side plates, and the reserved opening is sleeved on the outside of the limiting seat. The limiting seat facilitates the placement of workpiece two. After workpiece two is placed on the limiting seat, the bottom of workpiece two abuts against the outside of workpiece one, and at this time the end of workpiece one abuts against the fixed plate, thus completing the placement of workpiece one and workpiece two. During welding, the air inlet pipes of the four placement plates are connected to nitrogen. The controller controls the opening and closing of the air inlet pipes to connect the welding station to nitrogen. The nitrogen is discharged from multiple air outlets through the gas channel to the air outlet groove. The air outlet groove corresponds to the back side of workpiece one and workpiece two. During welding, nitrogen can be back-blown, which on the one hand cools the welding part, and on the other hand blows nitrogen evenly into the back of the weld, thus protecting the quality of the back of the weld.

[0017] 2. The T-joint welding equipment of the present invention has a fixing mechanism installed inside each of the four limiting seats. Before welding workpiece 1 and workpiece 2, workpiece 1 is placed on the placement plate with the reserved opening located outside the limiting seat. Workpiece 2 is then placed on the limiting seat. At this time, the drive component 3 inside the sliding shell is activated to retract its telescopic end, causing the pressure seat to descend. The side wall of the pressure seat is tilted, and it will gradually push multiple sliders inside the fixing ring to move outward simultaneously. At this time, the diameter of the multiple sliders after opening is larger than the diameter of the limiting seat. Then, the drive component 2 is activated to retract its telescopic end, causing the opened sliders to descend. Finally, the multiple sliders press down on workpiece 2 outside the limiting seat, achieving rapid fixing of workpiece 2 without the need for bolts and sealing caps to fix workpiece 2, saving time and avoiding unstable fixing caused by stud stripping. After welding is completed, drive component 2 and drive component 3 can open and reset simultaneously.

[0018] 3. The T-joint welding equipment of the present invention has sealing mechanisms installed on both sides of the two supports. After the workpiece is placed, the drive unit can be activated to extend its telescopic end and move the sealing plate toward the end opening of the workpiece. This squeezes the workpiece in the direction of the fixing plate, thereby fixing the workpiece laterally and increasing the internal sealing of the workpiece. This prevents air from entering during nitrogen backblowing, which affects the purity of nitrogen and reduces the smoothness and brightness of the weld. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure of the bracket, fixing plate and magnetic suction column of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure of the fixed disk, workpiece one, and workpiece two of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection structure of the fixing plate, side plate and limiting seat of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection structure of the limiting seat, sliding shell and pressure seat of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure of workpiece one, the reserved opening, and workpiece two according to the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure of the placement plate, the limiting seat, the air outlet groove and the air outlet of the present invention.

[0027] Figure 8 This is a schematic diagram of the connection structure of the sliding shell, the second driving component, and the third driving component of the present invention;

[0028] Figure 9 This is a schematic diagram of the connection structure of the air passage, air outlet and air inlet pipe of the present invention.

[0029] Figure 10 This is a schematic diagram of the connection structure of the fixing ring, slider, and annular spring of the present invention;

[0030] Figure 11 This is a schematic diagram of the connection structure of the slider and the groove of the present invention;

[0031] Figure 12 This is a schematic diagram of the connection structure between the slider and the annular spring of the present invention.

[0032] In the diagram: 1. Bracket; 2. Welding mechanism; 201. Mounting bracket one; 202. Control panel; 203. Argon arc welding machine; 204. Mounting bracket two; 205. Welding robot; 3. Side positioning mechanism; 301. Fixed plate; 302. Magnetic suction column; 303. Workpiece one; 304. Workpiece two; 305. Positioning hole; 306. Reserved opening; 4. Sealing mechanism; 401. Crossbeam; 402. Drive component one; 40 3. Sealing plate; 5. Fixing mechanism; 501. Fixing ring; 502. Pressure seat; 503. Driving component two; 504. Slider; 505. Sliding shell; 506. Driving component three; 507. Clamping groove; 508. Ring spring; 509. Slide groove; 6. Back blowing mechanism; 601. Side plate; 602. Placement plate; 603. Air passage; 604. Air outlet; 605. Air inlet pipe; 606. Limiting seat; 607. Air outlet groove. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1-12As shown, the T-joint welding equipment of the present invention includes two supports 1 and a welding mechanism 2 disposed on one side of the supports 1. Side positioning mechanisms 3 are installed on both sides of the two supports 1. Back-blowing mechanisms 6 are installed on each of the four side positioning mechanisms 3. Fixing mechanisms 5 are installed on each of the four back-blowing mechanisms 6. Sealing mechanisms 4 are installed on both sides of the two supports 1. The back-blowing mechanism 6 includes a side plate 601. A side plate 601 is fixedly connected to each of the four side positioning mechanisms 3. A placement plate 602 is installed on the side plate 601. An air inlet pipe 605 is threadedly connected to the side of each placement plate 602. Each of the four placement plates 602 has an air passage 603 inside, which is connected to an air inlet pipe 605. Each of the four placement plates 602 has a vertically formed air outlet 604. Each of the four placement plates 602 has an annular air outlet groove 607 on its surface, which communicates with the air outlet 604. Each of the four placement plates 602 has a limiting seat 606 welded inside the air outlet groove 607. The air passage 603 is annular, and the air outlets 604 on the placement plates 602 are arranged in a circular array, with the air outlet grooves 607 communicating with the air outlets 604 also being annular. The surface of plate 602 is arc-shaped, and the air intake pipe 605 is located at the center of the side of the plate 602. The side positioning mechanism 3 includes a fixing plate 301. Two fixing plates 301 are fixedly connected to both sides of the two brackets 1 by screws. The four side plates 601 are fixedly connected to the four fixing plates 301 respectively. The side plates 601 are located above the center of the fixing plates 301. The side walls of the four fixing plates 301 abut against the workpieces 303 sleeved on the outside of the side plates 601. The inner walls of the four workpieces 303 abut against the surfaces of the four plates 602 respectively. Each surface has a reserved opening 306. Each of the four workpieces 303 has a workpiece 304 located at the reserved opening 306 welded on it. The inner wall of the workpiece 304 fits against the outer wall of the limiting seat 606. The welding mechanism 2 includes a mounting frame 204. The mounting frame 204 is located at the center of the outer side of the two supports 1. A welding robot 205 is mounted on the mounting frame 204. A mounting frame 201 is located on one side of the mounting frame 204. An argon arc welding machine 203 and an operation screen 202 are mounted on the mounting frame 201. The operation screen 202 is electrically connected to the argon arc welding machine 203.After workpiece 1 303 and workpiece 2 304 are fixed, workpiece 1 303 is located outside the side plate 601, which will not affect the placement of workpiece 1 303. The interior of workpiece 1 303 is in contact with the top of the placement plate 602. During welding, the air inlet pipes 605 on the four side walls of the placement plate 602 are connected to nitrogen. The controller controls the opening and closing of the air inlet pipes 605 to connect the welding station to nitrogen. The nitrogen is discharged from the gas passage 603 through multiple gas outlets 604 to the gas outlet groove 607. The gas outlet groove 607 corresponds to the back side of workpiece 1 303 and workpiece 2 304. During welding, nitrogen can be back-blown, which cools the welding area and evenly blows nitrogen into the back of the weld to protect the quality of the back of the weld. During welding, the parameters of the argon arc welding machine 203 are controlled by the operation screen 202, and the welding position of the welding head is controlled by the welding robot 205.

[0035] Specifically, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the side positioning mechanism 3 also includes magnetic suction columns 302 and positioning holes 305. Three magnetic suction columns 302 are adsorbed onto the side walls of each of the four fixed plates 301 in a triangular shape. Multiple positioning holes 305 are arranged in a circular array at both ends of each of the four workpieces 303, and the magnetic suction columns 302 are inserted into the positioning holes 305. The fixing mechanism 5 includes sliding shells 505. Hollow sliding shells 505 are slidably connected to the center of each of the four limiting seats 606. A second driving component 503 is installed at the bottom of each of the four side plates 601. The telescopic ends of the second driving components 503 extend into the interior of the placement plate 602, and are fixedly connected to the bottom of the sliding shell 505. A third driving component 506 is installed inside each of the four sliding shells 505, and a pressure seat is provided at the top of each of the four sliding shells 505. 502, the telescopic end of the driving component 3 506 is fixedly connected to the bottom of the pressure seat 502. The top of each of the four sliding shells 505 is welded with a fixing ring 501. Each of the four fixing rings 501 has multiple sliding grooves 509 arranged in a ring array. Each of the multiple sliding grooves 509 has a slider 504 slidably connected inside. The side walls of the four fixing rings 501 and the multiple sliders 504 have ring-shaped clamping grooves 507. Each of the four clamping grooves 507 has a ring spring 508 sleeved inside. The corners of the ends of the multiple sliders 504 abut against the side walls of the pressure seat 502. The upper part of the side wall of the pressure seat 502 is inclined, and the end cross-section of the sliders 504 has a U-shaped structure. The outer wall of the fixing ring 501 is flush with the ends of the multiple sliders 504, and the diameter of the fixing ring 501 is equal to the minimum diameter of the top of the limiting seat 606.Before welding workpiece 303 and workpiece 304, place workpiece 303 on the placement plate 602 and fit the reserved opening 306 onto the outside of the limiting seat 606. Fit workpiece 304 onto the limiting seat 606 and insert the magnetic suction column 302 into the positioning hole 305, so that the magnetic suction column 302 is attracted to the fixing plate 301, thus completing the initial positioning of workpiece 303. It is essential to place workpiece 303 on the placement plate 602 before welding the magnetic suction column 304. The magnetic suction column 302 adheres to the fixed plate 301, preventing the magnetic suction column 302 from obstructing the placement of workpiece 303. The same applies when removing workpiece 303. Next, the driving component 3 506 inside the sliding shell 505 is activated. The driving component 3 506 is a cylinder, which retracts its telescopic end to drive the pressure seat 502 down. Because the side wall of the pressure seat 502 is inclined and abuts against the ends of multiple sliders 504, the pressure seat 502 will gradually push the multiple sliders inside the fixed ring 501. Simultaneously, sliders 504 move outwards. At this time, drive component 2 503 is in the extended state. Drive component 2 503 is also a cylinder. When multiple sliders 504 are open, their diameter is larger than the diameter of the limiting seat 606. Then, drive component 2 503 is activated, causing its telescopic end to retract and drive the opened sliders 504 to descend. Finally, multiple sliders 504 press down on workpiece 2 304 outside the limiting seat 606, achieving rapid fixation of workpiece 2 304 without the need for bolts and sealing caps, saving time and avoiding unstable fixation caused by stud stripping. After welding, drive component 2 503 and drive component 3 506 can simultaneously open and reset. Multiple sliders 504 retract into the fixing ring 501. Pulling out the magnetic suction column 302 inside the positioning hole 305 will not affect the removal of workpiece 1 303. Pulling workpiece 1 303 upwards will remove workpiece 2 304 from the limiting seat 606, completing the removal of the welded workpiece 1 303 and workpiece 2 304.

[0036] Specifically, refer to Figure 1 , Figure 2 and Figure 3 As shown, the sealing mechanism 4 includes a crossbeam 401. Both sides of the two supports 1 are horizontally welded with crossbeams 401. The ends of the four crossbeams 401 are each equipped with a drive component 402. The telescopic ends of the four drive components 402 are fixedly connected with sealing plates 403. The sealing plates 403 are arranged opposite to the ends of the workpiece 303. When welding the workpiece 303 and the workpiece 304, nitrogen is discharged from the air inlet pipe 605. At this time, the drive component 402 can be pre-activated to extend its telescopic end and move the sealing plate 403 toward the end opening of the workpiece 303. This compresses the workpiece 303 in the direction of the fixing plate 301, thereby fixing the workpiece 303 laterally and increasing the internal sealing of the workpiece 303. This prevents air from entering during nitrogen backblowing, which affects the purity of the nitrogen and reduces the smoothness and brightness of the weld.

[0037] In use, before welding workpiece 303 and workpiece 304, workpiece 303 is placed on the placement plate 602, and the pre-reserved opening 306 is fitted onto the outside of the limiting seat 606. Workpiece 304 is then fitted onto the limiting seat 606, and the magnetic suction column 302 is inserted into the positioning hole 305, attracting the magnetic suction column 302 to the fixing plate 301, thus completing the initial positioning of workpiece 303. It is essential to place workpiece 303 on the placement plate 602 first. After 02, the magnetic suction column 302 is attracted to the fixed plate 301 to avoid the magnetic suction column 302 blocking the placement of workpiece 303. The same applies when removing workpiece 303. Then, the driving component 3 506 inside the sliding shell 505 is activated. The driving component 3 506 is a cylinder, which causes its telescopic end to retract, driving the pressure seat 502 to descend. Since the side wall of the pressure seat 502 is inclined and the side wall of the pressure seat 502 abuts against the ends of multiple sliders 504, the pressure seat 502 will gradually push the fixed ring 5 Multiple sliders 504 inside 01 move outwards simultaneously. At this time, the second driving component 503 is in the extended state. The second driving component 503 is also a cylinder. When the multiple sliders 504 are opened, their diameter is larger than the diameter of the limit seat 606. Then, the second driving component 503 is activated, and its telescopic end retracts, causing the opened sliders 504 to descend. Finally, the multiple sliders 504 press down on the workpiece 304 outside the limit seat 606, achieving quick fixation of the workpiece 304. No bolts are needed to fix the workpiece 304 with the sealing cap, saving time and avoiding unstable fixation caused by stripped studs. After welding, the second driving component 503 and the third driving component 506 can open and reset simultaneously. The multiple sliders 504 retract into the interior of the fixing ring 501. Pulling out the magnetic suction column 302 inside the positioning hole 305 will not affect the pull-out of the workpiece 303. Pulling the workpiece 303 upwards will pull the workpiece 304 out of the limit seat 606, completing the removal of the welded workpiece 303 and workpiece 304.

[0038] After fixing workpiece 1 303 and workpiece 2 304, workpiece 1 303 is located outside the side plate 601, which will not affect the placement of workpiece 1 303. The inside of workpiece 1 303 is in contact with the top of the placement plate 602. During welding, the air inlet pipes 605 on the side walls of the four placement plates 602 are connected to nitrogen. The switch of the air inlet pipes 605 is controlled by the controller to connect the welding station to nitrogen. Nitrogen is discharged from multiple air outlets 604 through the air passage 603 to the air outlet groove 607. The air outlet groove 607 corresponds to the back side of workpiece 1 303 and workpiece 2 304. Nitrogen can be back-blown during welding. On the one hand, it cools the welding part. On the other hand, nitrogen is blown evenly into the back of the weld to protect the quality of the back of the weld. During welding, the parameters of the argon arc welding machine 203 are controlled by the operation screen 202, and the welding position of the welding head is controlled by the welding robot 205.

[0039] Finally, when welding workpiece 303 and workpiece 304, nitrogen gas is discharged from the air inlet pipe 605. At this time, the drive component 402 can be activated in advance to extend its telescopic end and move the sealing plate 403 toward the end opening of workpiece 303. This will squeeze the fixed plate 301 in the direction of workpiece 303, thereby fixing workpiece 303 laterally and increasing the sealing of the inside of workpiece 303. This will prevent air from entering during nitrogen backblowing, which would affect the purity of nitrogen and reduce the smoothness and brightness of the weld.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A T-joint welding equipment, characterized in that, It includes two brackets (1) and a welding mechanism (2) located on one side of the brackets (1). Side positioning mechanisms (3) are installed on both sides of the two brackets (1). Back blowing mechanisms (6) are installed on the four side positioning mechanisms (3). Fixing mechanisms (5) are installed on the four back blowing mechanisms (6). Sealing mechanisms (4) are installed on both sides of the two brackets (1). The back-blowing mechanism (6) includes a side plate (601), on which a placement plate (602) is mounted. An air inlet pipe (605) is threadedly connected to the side of each of the four placement plates (602). An air passage (603) is opened inside each of the four placement plates (602). The air passage (603) is connected to the air inlet pipe (605). An air outlet (604) is vertically opened on each of the four placement plates (602). An air outlet groove (607) with an annular structure is opened on the surface of each of the four placement plates (602) and is connected to the air outlet (604). A limiting seat (606) located inside the air outlet groove (607) is welded on each of the four placement plates (602). The side positioning mechanism (3) includes a fixed plate (301). Each of the two brackets (1) is fixedly connected to a fixed plate (301) by screws. The four side plates (601) are fixedly connected to the four fixed plates (301) respectively. The side plates (601) are located above the center of the fixed plate (301). The side walls of the four fixed plates (301) abut against the workpiece one (303) sleeved on the outside of the side plate (601). The inner walls of the four workpiece one (303) abut against the surface of the four placement plates (602) respectively. The surface of the four workpiece one (303) is provided with a reserved opening (306). The four workpiece one (303) are welded with a workpiece two (304) located at the reserved opening (306). The inner wall of the workpiece two (304) fits against the outer wall of the limiting seat (606). The side positioning mechanism (3) also includes magnetic suction columns (302) and positioning holes (305). The side walls of the four fixed disks (301) are each adsorbed with three magnetic suction columns (302) arranged in a triangular pattern. The two ends of the four workpieces (303) are each provided with multiple positioning holes (305) arranged in a ring array. The magnetic suction columns (302) are inserted into the interior of the positioning holes (305). The fixing mechanism (5) includes a sliding shell (505). A hollow sliding shell (505) is slidably connected to the center of each of the four limiting seats (606). A second driving component (503) is installed at the bottom of each of the four side plates (601). The telescopic ends of the four second driving components (503) extend into the interior of the placement plate (602), and the telescopic ends of the second driving components (503) are fixedly connected to the bottom of the sliding shell (505). A third driving component (506) is installed inside each of the four sliding shells (505). A pressure seat (502) is provided at the top of each of the four sliding shells (505). The telescopic end of 06 is fixedly connected to the bottom of the pressure seat (502). The top of each of the four sliding shells (505) is welded with a fixing ring (501). Each of the four fixing rings (501) has multiple sliding grooves (509) arranged in a ring array. Each of the multiple sliding grooves (509) has a slider (504) slidably connected inside. The side walls of the four fixing rings (501) and the multiple sliders (504) have ring-shaped clamping grooves (507). Each of the multiple clamping grooves (507) has a ring spring (508) sleeved inside. The corners of the ends of the multiple sliders (504) abut against the side walls of the pressure seat (502).

2. The T-joint welding equipment according to claim 1, characterized in that: The air passage (603) has a ring structure, and the air outlets (604) on the placement plate (602) are arranged in a ring array with multiple outlets, and the air outlet groove (607) connected to the air outlets (604) has a ring structure.

3. The T-joint welding equipment according to claim 1, characterized in that: The surfaces of the four placement plates (602) are all arc-shaped, and the air inlet pipe (605) is located at the center of the side of the placement plate (602).

4. The T-joint welding equipment according to claim 1, characterized in that: The upper part of the side wall of the pressure seat (502) is inclined, and the end section of the slider (504) has a U-shaped structure.

5. The T-joint welding equipment according to claim 1, characterized in that: The outer wall of the fixing ring (501) is flush with the ends of the plurality of sliders (504), and the diameter of the fixing ring (501) is equal to the minimum diameter of the top of the limiting seat (606).

6. The T-joint welding equipment according to claim 1, characterized in that: The sealing mechanism (4) includes a crossbeam (401), and the two supports (1) are horizontally welded with crossbeams (401) on both sides. The ends of the four crossbeams (401) are each equipped with a drive component (402), and the telescopic ends of the four drive components (402) are fixedly connected with sealing plates (403). The sealing plates (403) are arranged opposite to the ends of the workpiece (303).

7. The T-joint welding equipment according to claim 1, characterized in that: The welding mechanism (2) includes a second mounting frame (204). The second mounting frame (204) is located at the center of the outer side of the two supports (1). A welding robot (205) is mounted on the second mounting frame (204). A first mounting frame (201) is located on one side of the second mounting frame (204). An argon arc welding machine (203) and an operation screen (202) are mounted on the first mounting frame (201). The operation screen (202) is electrically connected to the argon arc welding machine (203).

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