Welding joint filling supporting device for stainless steel pipe fitting

Abstract

The invention relates to the technical field of welding seam filling, in particular to a welding seam filling supporting device for stainless steel pipe fittings, which comprises a supporting frame, a transverse rail is fixedly connected to the upper end of the supporting frame, a welding head is arranged at the front end of the transverse rail, and two groups of vertical rods are fixedly connected to the inner side of the supporting frame. L-shaped rods are fixedly connected to the opposite sides of the two vertical rods, fixing shafts are fixedly connected to the opposite sides of the two L-shaped rods, a sliding rail is fixedly connected between the two fixing shafts, and a limiting assembly used for jacking up a steel pipe is slidably connected to the upper end of the sliding rail. According to the automatic welding device for the stainless steel pipe, rotation and revolution can be conducted on the stainless steel pipe according to the welding requirement, seam filling can be conveniently conducted on the steel pipe, the fixing position of the steel pipe can be adjusted, and the welding quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of welding repair, in particular to a welding repair supporting device for a stainless steel pipe fitting. BACKGROUND

[0002] The new energy automobile refers to an automobile adopting unconventional vehicle fuel as a power source, combining advanced technologies of vehicle power control and driving, and forming an automobile with advanced technical principles and new technologies and structures. The new energy automobile includes a pure electric automobile, a range-extender electric automobile, a hybrid electric automobile, a fuel cell electric automobile and a hydrogen engine automobile. In the new energy battery industry, a stainless steel pipe is commonly used for manufacturing a battery shell, a support and a connecting piece and the like. Excellent mechanical properties and processing properties of the stainless steel pipe make it easy to be formed and welded in the production process, and meanwhile, the stainless steel pipe can provide sufficient strength and durability. The stainless steel repair welding process is a technology for repairing defects such as pores and cracks of a stainless steel part by using a welding method, and aims to restore the performance and appearance of the part. In the process of repairing the stainless steel pipe, the stainless steel pipe needs to be fixed, and the stainless steel pipe needs to be rotated in the process of repairing the stainless steel pipe, so as to achieve the purpose of repairing the stainless steel pipe. Therefore, the application provides the welding repair supporting device for the stainless steel pipe fitting. SUMMARY

[0003] The application aims to solve the problems in the background art and provides the welding repair supporting device for the stainless steel pipe fitting.

[0004] To achieve the above purpose, the application adopts the technical scheme that the welding repair supporting device for the stainless steel pipe fitting comprises a supporting frame, the upper end of the supporting frame is fixedly connected with a cross rail, the front end of the cross rail is provided with a welding head, the inner side of the supporting frame is fixedly connected with two groups of vertical rods, the opposite sides of the two groups of vertical rods are fixedly connected with L rods, the opposite sides of the two groups of L rods are fixedly connected with fixed shafts, the fixed shafts are fixedly connected with a sliding rail between the two groups of fixed shafts, the upper end of the sliding rail is slidably connected with a limiting assembly for lifting the steel pipe, and the outer sides of the two groups of fixed shafts are respectively provided with an adjusting assembly for adjusting the position of the steel pipe and a fixing assembly for stabilizing the steel pipe.

[0005] Preferably, the adjusting assembly includes a ring wheel rotatably connected to the outside of a fixed shaft. An internal gear is fixedly connected to the front end of the ring wheel, and an external gear is fixedly connected to the rear end of the ring wheel. A drive motor is fixedly connected to the upper end of a vertical rod near the ring wheel, and a drive gear is fixedly connected to the output end of the drive motor. The drive gear meshes with the external gear. A rotating wheel is rotatably connected to the outside of the fixed shaft near the ring wheel. Several sets of rotating grooves are formed on the outer side of the rotating wheel. A pressure rod is rotatably connected to the inner side of the rotating groove. A half-foot ring is fixedly connected to the lower end of the pressure rod. Several sets of half-foot rings can form an internal gear ring, which meshes with an internal gear.

[0006] Preferably, the inner side of the rotating groove is provided with two sets of connecting grooves, the inner side of the pressure rod is fixedly connected with a connecting shaft, the two ends of the connecting shaft are fixedly connected with connecting heads, the connecting heads are rotatably connected to the inner side of the connecting groove, and the outer side of the connecting heads is provided with spring pieces.

[0007] Preferably, a plurality of fixing members are fixedly connected to the outer side of the rotating wheel. The fixing members include a first sliding shell fixedly connected to the rotating wheel, a first sliding column slidably connected to the inner side of the first sliding shell, a fixed column rotatably connected to the upper end of the first sliding column, an extension column fixedly connected to the rear end of the fixed column, a driven gear fixedly connected to the rear end of the extension column, the driven gear meshing with the ring wheel, a second spring fixedly connected to the inner side of the first sliding shell, a limit ring fixedly connected to the upper end of the second spring, and the upper end of the limit ring fixedly connected to the first sliding column.

[0008] Preferably, a fixed shell is fixedly connected to the front end of the fixed column, a top plate is slidably connected to the inner side of the fixed shell, a first spring is fixedly connected to the rear end of the top plate, the rear end of the first spring is fixedly connected to the inner wall of the fixed shell, a rotating opening is provided on the outer side of the top plate, a limiting rod is rotatably connected to the inner side of the rotating opening, the limiting rod is L-shaped, a U-shaped plate is fixedly connected to the inner wall of the fixed shell, the limiting rod is rotatably connected to the inner side of the U-shaped plate, and a ball is rotatably connected to the bottom end of the limiting rod.

[0009] Preferably, the limiting component includes a track trolley slidably connected to the outside of the slide rail, a pressure cylinder rotatably connected to the rear end of the track trolley, the pressure cylinder engaging with the rotating wheel, two sets of first electric push rods fixedly connected to the upper end of the track trolley, a support shell fixedly connected to the upper end of the first electric push rods, rotating blocks fixedly connected to both sides of the support shell, and a clamping rod rotatably connected to the outer side of the rotating blocks.

[0010] Preferably, the bottom ends of the two sets of support shells are fixedly connected to a support plate, the upper end of the support plate is fixedly connected to a second electric push rod, the upper end of the second electric push rod is fixedly connected to a connecting rod, the front and rear ends of the connecting rod are fixedly connected to connecting plates, the connecting plates are slidably connected to the inner side of the support shell, the upper end of the connecting plate is fixedly connected to a support head, the upper end of the support head is fixedly connected to a pull plate, the two sides of the pull plate are rotatably connected to pull rods, a through groove is opened on one side of the clamping rod, and one end of the pull rod is rotatably connected to the inner side of the through groove.

[0011] Preferably, the fixing assembly includes a rotating cylinder rotatably connected to the outside of the fixing shaft, a third compound fixedly connected to the outside of the rotating cylinder, a fourth spring slidably connected to the inside of the third compound, a clamping cylinder fixedly connected to the upper end of the fourth spring, a positioning element for fixing the steel pipe provided on the outside of the clamping cylinder, a third sliding column fixedly connected to the inside of the third compound, and the third sliding column fixedly connected to the fourth spring.

[0012] Preferably, the positioning element includes a second sliding shell fixedly connected to the clamping cylinder, the second sliding shell extending to the inner side of the clamping cylinder, a second sliding column slidably connected to the inner side of the second sliding shell, a second ball bearing rotatably connected to the lower end of the second sliding shell, a third spring fixedly connected to the upper end of the second sliding column, the third spring being fixedly connected to the second sliding shell, and an arc plate fixedly connected to the outer side of the second sliding column, the other end of the arc plate abutting against the inner wall of the clamping cylinder.

[0013] Compared with the prior art, the present invention provides a welding joint repair support device for stainless steel pipe fittings, which has the following advantages: 1. A welding joint support device for stainless steel pipe fittings, wherein the steel pipe can push the top plate to move inward, and the top plate can pull the limiting rod to rotate inside the U-shaped plate, so that the lower end of the limiting rod is pressed against the outside of the steel pipe, thus pressing the steel pipe tightly. The second sliding shell allows the steel pipe to be easily inserted into the inside of the clamp. The third spring can press the second sliding column to press the second ball against the outside of the steel pipe, ensuring the stability of the steel pipe during the welding process.

[0014] 2. This stainless steel pipe fitting welding joint support device can move the pressure cylinder via a track trolley. The pressure cylinder can press the pressure rod tightly against the inner side of the rotating groove, causing multiple sets of half-foot rings to close. The rotation of the drive gear can drive the outer gear to rotate on the outside of the fixed shaft, which in turn drives the ring wheel to rotate. The inner gear drives the closed half-foot rings to rotate, and the rotating wheel drives the fixed part to rotate, thereby causing the steel pipe to revolve. The spring can drive the connecting groove to rotate, and the connecting shaft drives the pressure rod to rotate, causing the half-foot rings to open.

[0015] 3. This stainless steel pipe fitting welding joint support device utilizes a first electric push rod to move the support shell upwards, causing the steel pipe to be inserted between two sets of pull plates. The pull plates then push the steel pipe upwards, causing the steel pipe to move the fixed column upwards. This causes the driven gear to mesh with the inner toothed block of the ring wheel. The rotation of the ring wheel drives the fixed column to rotate, which in turn drives the fixed shell to rotate, causing the steel pipe to rotate. Adjusting the position of the welding head at the upper end of the horizontal rail allows for joint filling of the steel pipe. A second electric push rod moves the connecting rod downwards, and the support head pulls the pull plates downwards. This, in turn, uses two sets of pull rods to pull the two sets of through slots to rotate, clamping the steel pipe and further fixing it for easier joint filling. Adjusting the position of the track trolley allows for adjustment of the clamping position of the steel pipe, further ensuring the quality of joint filling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the exploded structure of the present invention; Figure 4 Cross-section of the present invention Figure 1 ; Figure 5 Cross-section of the present invention Figure 2 ; Figure 6 This is a partial structural diagram of the present invention. Figure 2 ; Figure 7 For the present invention Figure 5 Enlarged structural diagram of section A; Figure 8 This is a cross-sectional view of the fastener of the present invention; Figure 9 This is a schematic diagram of the limiting component structure of the present invention; Figure 10 This is a schematic diagram of the limiting component of the present invention; Figure 11 This is a schematic diagram of the fixed component structure of the present invention; Figure 12 This is a cross-sectional view of the fixed component of the present invention; Figure 13 This is a schematic diagram of the structure of the fixing component of the present invention. Figure 1 ; Figure 14 This is a schematic diagram of the structure of the fixing component of the present invention. Figure 2 .

[0017] In the diagram: 1. Support frame; 2. Horizontal rail; 3. Welded head; 4. Vertical rod; 5. L-shaped rod; 6. Fixed shaft; 7. Slide rail; 8. Adjustment assembly; 81. Ring wheel; 82. Internal gear; 83. External gear; 84. Drive motor; 85. Drive gear; 86. Rotating wheel; 87. Pressure rod; 88. Half-foot ring; 89. Fixing component; 891. First sliding shell; 892. First sliding column; 893. Fixed column; 894. Fixed shell; 895. Extension column; 896. Driven gear; 897. Top plate; 898. First spring; 899. Rotary opening; 8910. Limiting rod; 8911. U-shaped plate; 8912. Rolling ball; 8913. Limiting ring; 8914. Second spring; 810. Connecting shaft; 811. 812. Connecting groove; 813. Connecting head; 814. Spring piece; 815. Rotary groove; 9. Limiting assembly; 91. Track trolley; 92. Pressure cylinder; 93. First electric push rod; 94. Support shell; 95. Rotating block; 96. Clamping rod; 97. Support plate; 98. Second electric push rod; 99. Connecting rod; 910. Connecting piece; 911. Support head; 912. Pull piece; 913. Pull rod; 914. Through groove; 10. Fixing assembly; 101. Rotary cylinder; 102. Clamping cylinder; 103. Positioning component; 1031. Second sliding shell; 1032. Second sliding column; 1033. Third spring; 1034. Second ball bearing; 1035. Arc piece; 104. Third compound; 105. Third sliding column; 106. Fourth spring. Detailed Implementation

[0018] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0019] Please see Figure 1 - Figure 14 A welding joint support device for stainless steel pipe fittings includes a support frame 1. A horizontal rail 2 is fixedly connected to the upper end of the support frame 1. A welding head 3 is provided at the front end of the horizontal rail 2. Two sets of vertical rods 4 are fixedly connected to the inner side of the support frame 1. An L-shaped rod 5 is fixedly connected to the opposite side of each of the two sets of vertical rods 4. A fixed shaft 6 is fixedly connected to the opposite side of each of the two sets of L-shaped rods 5. A slide rail 7 is fixedly connected between the two sets of fixed shafts 6. A limiting component 9 for lifting the steel pipe is slidably connected to the upper end of the slide rail 7. An adjusting component 8 for adjusting the position of the steel pipe and a fixing component 10 for ensuring the stability of the steel pipe are respectively provided on the outer side of the two sets of fixed shafts 6.

[0020] In this embodiment, the adjustment component 8 includes a ring wheel 81 rotatably connected to the outside of the fixed shaft 6. An internal gear 82 is fixedly connected to the front end of the ring wheel 81, and an external gear 83 is fixedly connected to the rear end of the ring wheel 81. A drive motor 84 is fixedly connected to the upper end of the vertical rod 4 near the ring wheel 81. A drive gear 85 is fixedly connected to the output end of the drive motor 84. The drive gear 85 meshes with the external gear 83. A rotating wheel 86 is rotatably connected to the outside of the fixed shaft 6 near the ring wheel 81. Several sets of rotating grooves 814 are opened on the outside of the rotating wheel 86. A pressure rod 87 is rotatably connected to the inner side of the rotating groove 814. A half-foot ring 88 is fixedly connected to the lower end of the pressure rod 87. Several sets of half-foot rings 88 can form an internal gear ring, which meshes with the internal gear 82.

[0021] Specifically, the pressure rod 87 is pressed against the inner side of the rotating groove 814, causing multiple sets of half-foot rings 88 to close. By rotating the drive gear 85, the outer gear 83 can be driven to rotate on the outside of the fixed shaft 6, which in turn drives the ring wheel 81 to rotate, causing the inner gear 82 to drive the closed half-foot rings 88 to rotate. Then, the rotating wheel 86 drives the fixing part 89 to rotate, thereby driving the steel pipe to revolve.

[0022] In this embodiment, two sets of connecting grooves 811 are provided on the inner side of the rotating groove 814, a connecting shaft 810 is fixedly connected to the inner side of the pressure rod 87, and a connector 812 is fixedly connected to both ends of the connecting shaft 810. The connector 812 is rotatably connected to the inner side of the connecting groove 811, and a spring piece 813 is provided on the outer side of the connector 812.

[0023] Specifically, the spring piece 813 can drive the connecting groove 811 to rotate, and then the connecting shaft 810 can drive the pressure rod 87 to rotate, causing the half-foot ring 88 to open.

[0024] In this embodiment, a number of fixing members 89 are fixedly connected to the outer side of the rotating wheel 86. The fixing members 89 include a first sliding shell 891 fixedly connected to the rotating wheel 86, a first sliding column 892 slidably connected to the inner side of the first sliding shell 891, a fixing column 893 rotatably connected to the upper end of the first sliding column 892, an extension column 895 fixedly connected to the rear end of the fixing column 893, a driven gear 896 fixedly connected to the rear end of the extension column 895, the driven gear 896 meshing with the ring wheel 81, a second spring 8914 fixedly connected to the inner side of the first sliding shell 891, a limit ring 8913 fixedly connected to the upper end of the second spring 8914, and the upper end of the limit ring 8913 fixedly connected to the first sliding column 892.

[0025] Specifically, the driven gear 896 meshes with the inner tooth block of the ring wheel 81. The rotation of the ring wheel 81 can drive the fixed column 893 to rotate, which in turn drives the fixed shell 894 to rotate, which in turn drives the steel pipe to rotate. The second spring 8914 can pull the first sliding column 892 down, which facilitates the separation of the driven gear 896 from the ring wheel 81.

[0026] In this embodiment, a fixed shell 894 is fixedly connected to the front end of the fixed column 893, a top plate 897 is slidably connected to the inner side of the fixed shell 894, a first spring 898 is fixedly connected to the rear end of the top plate 897, the rear end of the first spring 898 is fixedly connected to the inner wall of the fixed shell 894, a turning port 899 is opened on the outer side of the top plate 897, a limiting rod 8910 is rotatably connected to the inner side of the turning port 899, the limiting rod 8910 is L-shaped, a U-shaped plate 8911 is fixedly connected to the inner wall of the fixed shell 894, the limiting rod 8910 is rotatably connected to the inner side of the U-shaped plate 8911, and a ball 8912 is rotatably connected to the bottom end of the limiting rod 8910.

[0027] Specifically, the steel pipe can push the top plate 897 to move inward, and the top plate 897 can pull the limiting rod 8910 to rotate inside the U-shaped plate 8911, so that the lower end of the limiting rod 8910 presses against the outside of the steel pipe, thus fixing the stainless steel pipe.

[0028] In this embodiment, the limiting component 9 includes a track trolley 91 slidably connected to the outside of the slide rail 7. A pressure cylinder 92 is rotatably connected to the rear end of the track trolley 91. The pressure cylinder 92 is engaged with the rotating wheel 86. Two sets of first electric push rods 93 are fixedly connected to the upper end of the track trolley 91. A support shell 94 is fixedly connected to the upper end of the first electric push rod 93. Rotating blocks 95 are fixedly connected to both sides of the support shell 94. A clamping rod 96 is rotatably connected to the outer side of the rotating block 95.

[0029] Specifically, the track trolley 91 can drive the pressure cylinder 92 to move, and the pressure cylinder 92 can press the pressure rod 87 into the inner side of the rotating groove 814. The first electric push rod 93 pushes the support shell 94 to move upward, so that the steel pipe is inserted between the two sets of pull plates 912. The pull plates 912 push the steel pipe upward, so that the driven gear 896 meshes with the inner tooth block of the ring wheel 81.

[0030] In this embodiment, the bottom ends of the two sets of support shells 94 are fixedly connected to a support plate 97. The upper end of the support plate 97 is fixedly connected to a second electric push rod 98. The upper end of the second electric push rod 98 is fixedly connected to a connecting rod 99. The front and rear ends of the connecting rod 99 are fixedly connected to connecting pieces 910. The connecting pieces 910 are slidably connected to the inner side of the support shell 94. The upper end of the connecting pieces 910 is fixedly connected to a support head 911. The upper end of the support head 911 is fixedly connected to a pull piece 912. Pull rods 913 are rotatably connected to both sides of the pull piece 912. A through groove 914 is opened on one side of the clamping rod 96. One end of the pull rod 913 is rotatably connected to the inner side of the through groove 914.

[0031] Specifically, the second electric push rod 98 can drive the connecting rod 99 to move down, and the support head 911 can pull the pull plate 912 to move down. Then, the two sets of pull rods 913 can pull the two sets of through grooves 914 to rotate, clamping the steel pipe and further fixing it to facilitate the patching of the steel pipe. By adjusting the position of the track trolley 91, the clamping position of the steel pipe can be adjusted to further ensure the quality of the patching of the steel pipe.

[0032] In this embodiment, the fixing assembly 10 includes a rotating cylinder 101 rotatably connected to the outside of the fixing shaft 6. A third compound 104 is fixedly connected to the outside of the rotating cylinder 101. A fourth spring 106 is slidably connected to the inside of the third compound 104. A clamping cylinder 102 is fixedly connected to the upper end of the fourth spring 106. A positioning member 103 for fixing the steel pipe is provided on the outside of the clamping cylinder 102. A third sliding column 105 is fixedly connected to the inside of the third compound 104. The third sliding column 105 is fixedly connected to the fourth spring 106.

[0033] Specifically, the third sliding column 105 can pull the fourth spring 106 down, which in turn pulls the clamp 102 down, so that the steel pipe returns to its original position.

[0034] In this embodiment, the positioning member 103 includes a second sliding shell 1031 fixedly connected to the clamping cylinder 102. The second sliding shell 1031 extends to the inner side of the clamping cylinder 102. A second sliding column 1032 is slidably connected to the inner side of the second sliding shell 1031. A second ball bearing 1034 is rotatably connected to the lower end of the second sliding shell 1031. A third spring 1033 is fixedly connected to the upper end of the second sliding column 1032. The third spring 1033 is fixedly connected to the second sliding shell 1031. An arc plate 1035 is fixedly connected to the outer side of the second sliding column 1032. The other end of the arc plate 1035 abuts against the inner wall of the clamping cylinder 102.

[0035] Specifically, the second sliding shell 1031 facilitates the insertion of the steel pipe into the inner side of the clamp 102, and the third spring 1033 can press the second sliding column 1032 to press the second ball 1034 tightly against the outside of the steel pipe, ensuring the stability of the steel pipe during the welding process.

[0036] It should be noted that during use, the stainless steel tube is inserted through the inside of the clamp 102, with the other end of the tube inserted into the inside of the fixing shell 894 and pressed against the top plate 897. As the tube penetrates deeper, the top plate 897 moves the limiting rod 8910, causing it to rotate inside the U-shaped plate 8911. This causes the lower end of the limiting rod 8910 to press against the outside of the tube, thus clamping it. Simultaneously, the first spring 898 retracts, and the second sliding shell 1031 facilitates the insertion of the tube into the inside of the clamp 102. The three springs 1033 can press the second sliding column 1032 to press the second ball 1034 tightly against the outside of the steel pipe, ensuring the stability of the steel pipe during welding. The starting trolley 91 slides on the slide rail 7, so that the pressure cylinder 92 is sleeved on the outside of the rotating wheel 86, pressing the pressure rod 87 tightly against the inside of the rotating groove 814. At this time, the half-foot ring 88 will close. The starting drive motor 84 drives the drive gear 85 to rotate, which can drive the outer gear 83 to rotate on the outside of the fixed shaft 6, thereby driving the ring wheel 81 to rotate, so that the inner gear 82 drives the closed half-foot ring 88 to rotate. Then, the rotating wheel 86 drives the fixed part 89 to rotate, thereby causing the steel pipe to revolve. The track trolley 91 is activated to disengage the pressure cylinder 92 from the rotating wheel 86. At this time, the spring piece 813 will drive the connecting groove 811 to rotate, which in turn drives the pressure rod 87 to rotate, causing the half-foot ring 88 to open. The first electric push rod 93 is activated to push the support shell 94 upward, so that the steel pipe is inserted between the two sets of pull pieces 912. The pull pieces 912 push the steel pipe upward, which will drive the fixed column 893 to move upward, so that the driven gear 896 meshes with the inner tooth block of the ring wheel 81. At the same time, the first sliding column 892 will pull the second spring 8914 to open. At this time, the ring wheel 81 rotates, which can drive the fixed column 893 to rotate, and then drive the fixed shell 894 to rotate, which in turn drives the steel pipe to rotate. Adjusting the position of the welding head 3 at the upper end of the horizontal rail 2 can fill the gap in the steel pipe. The second electric push rod 98 is started to drive the connecting rod 99 to move down. The support head 911 pulls the pull plate 912 to move down, and then the two sets of pull rods 913 pull the two sets of through grooves 914 to rotate, clamping the steel pipe and further fixing the steel pipe, which facilitates the filling of the gap in the steel pipe.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding patch support device for stainless steel pipe fittings, comprising a support frame (1), characterized in that, The upper end of the support frame (1) is fixedly connected with a cross rail (2), the front end of the cross rail (2) is provided with a welding head (3), the inner side of the support frame (1) is fixedly connected with two groups of vertical rods (4), the opposite sides of the two groups of vertical rods (4) are fixedly connected with L-shaped rods (5), the opposite sides of the two groups of L-shaped rods (5) are fixedly connected with fixed shafts (6), the two groups of fixed shafts (6) are fixedly connected with slide rails (7), the upper end of the slide rail (7) is slidably connected with a limiting assembly (9) for lifting the steel pipe, the outer sides of the two groups of fixed shafts (6) are respectively provided with an adjusting assembly (8) for adjusting the position of the steel pipe and a fixing assembly (10) for ensuring the stability of the steel pipe.

2. A welding bead support device for stainless steel pipe fittings according to claim 1, characterized in that: The adjusting assembly (8) comprises a ring wheel (81) rotatably connected to the outer side of the fixed shaft (6), the front end of the ring wheel (81) is fixedly connected with an internal gear (82), the rear end of the ring wheel (81) is fixedly connected with an external gear (83), the upper end of the vertical rod (4) close to the ring wheel (81) is fixedly connected with a drive motor (84), the output end of the drive motor (84) is fixedly connected with a drive gear (85), the drive gear (85) is engaged with the external gear (83), the outer side of the fixed shaft (6) close to the ring wheel (81) is rotatably connected with a rotating wheel (86), a plurality of groups of rotating grooves (814) are formed in the outer side of the rotating wheel (86), the inner side of the rotating groove (814) is rotatably connected with a pressing rod (87), the lower end of the pressing rod (87) is fixedly connected with a half-inch ring (88), a plurality of groups of half-inch rings (88) can form an internal gear ring, and the internal gear ring is engaged with the internal gear (82).

3. A welding bead support device for stainless steel pipe fittings according to claim 2, characterized in that: A plurality of groups of connecting grooves (811) are formed in the inner side of the rotating groove (814), the inner side of the pressing rod (87) is fixedly connected with a connecting shaft (810), the two ends of the connecting shaft (810) are fixedly connected with connecting heads (812), the connecting heads (812) are rotatably connected to the inner side of the connecting grooves (811), and the outer side of the connecting head (812) is provided with a spring piece (813).

4. A welding bead support device for stainless steel pipe fittings according to claim 3, characterized in that: A plurality of groups of fixing members (89) are fixedly connected to the outer side of the rotating wheel (86), the fixing member (89) comprises a first sliding shell (891) fixedly connected with the rotating wheel (86), the inner side of the first sliding shell (891) is slidably connected with a first sliding column (892), the upper end of the first sliding column (892) is rotatably connected with a fixed column (893), the rear end of the fixed column (893) is fixedly connected with an extension column (895), the rear end of the extension column (895) is fixedly connected with a driven gear (896), the driven gear (896) is engaged with the ring wheel (81), the inner side of the first sliding shell (891) is fixedly connected with a second spring (8914), the upper end of the second spring (8914) is fixedly connected with a limiting ring (8913), and the upper end of the limiting ring (8913) is fixedly connected with the first sliding column (892).

5. A welding bead support device for stainless steel pipe fittings according to claim 4, characterized in that: The front end of the fixed column (893) is fixedly connected with a fixed shell (894), the inner side of the fixed shell (894) is slidably connected with a top disc (897), the rear end of the top disc (897) is fixedly connected with a first spring (898), the rear end of the first spring (898) is fixedly connected with the inner wall of the fixed shell (894), the outer side of the top disc (897) is provided with a rotating opening (899), the inner side of the rotating opening (899) is rotatably connected with a limiting rod (8910), the limiting rod (8910) is L-shaped, the inner wall of the fixed shell (894) is fixedly connected with a U-shaped plate (8911), the limiting rod (8910) is rotatably connected to the inner side of the U-shaped plate (8911), and the bottom end of the limiting rod (8910) is rotatably connected with a rolling ball (8912).

6. A welding bead support device for stainless steel pipe fittings according to claim 1, characterized in that: The limiting assembly (9) comprises a track trolley (91) slidably connected to the outer side of the sliding rail (7), the rear end of the track trolley (91) is rotatably connected with a pressing cylinder (92), the pressing cylinder (92) is matched with the rotating wheel (86), the upper end of the track trolley (91) is fixedly connected with two groups of first electric push rods (93), the upper end of the first electric push rod (93) is fixedly connected with a supporting shell (94), the two sides of the supporting shell (94) are fixedly connected with rotating blocks (95), and the outer side of the rotating block (95) is rotatably connected with clamping rods (96).

7. A welding bead support device for stainless steel pipe fittings according to claim 6, characterized in that: The bottom ends of the two groups of supporting shells (94) are fixedly connected with a supporting plate (97), the upper end of the supporting plate (97) is fixedly connected with a second electric push rod (98), the upper end of the second electric push rod (98) is fixedly connected with a connecting rod (99), the front and rear ends of the connecting rod (99) are fixedly connected with connecting pieces (910), the connecting pieces (910) are slidably connected to the inner side of the supporting shell (94), the upper end of the connecting piece (910) is fixedly connected with a supporting head (911), the upper end of the supporting head (911) is fixedly connected with a pull tab (912), the two sides of the pull tab (912) are rotatably connected with pull rods (913), the one side of the clamping rod (96) is provided with a through groove (914), and one end of the pull rod (913) is rotatably connected to the inner side of the through groove (914).

8. A welding bead support device for stainless steel pipe fittings according to claim 1, characterized in that: The fixing assembly (10) comprises a rotating cylinder (101) rotatably connected to the outer side of the fixed shaft (6), the outer side of the rotating cylinder (101) is fixedly connected with a third combination (104), the inner side of the third combination (104) is slidably connected with a fourth spring (106), the upper end of the fourth spring (106) is fixedly connected with a clamping cylinder (102), the outer side of the clamping cylinder (102) is provided with a positioning piece (103) for fixing a steel pipe, the inner side of the third combination (104) is fixedly connected with a third sliding column (105), and the third sliding column (105) is fixedly connected with the fourth spring (106).

9. A welding bead support device for stainless steel pipe fittings according to claim 8, characterized in that: The positioning piece (103) comprises a second sliding shell (1031) fixedly connected with the clamp cylinder (102), the second sliding shell (1031) extends to the inner side of the clamp cylinder (102), the inner side of the second sliding shell (1031) is slidingly connected with a second sliding column (1032), the lower end of the second sliding shell (1031) is rotatably connected with a second ball (1034), the upper end of the second sliding column (1032) is fixedly connected with a third spring (1033), the third spring (1033) is fixedly connected with the second sliding shell (1031), and the outer side of the second sliding column (1032) is fixedly connected with an arc piece (1035), one end of the arc piece (1035) abuts against the inner wall of the clamp cylinder (102).

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