Half-pipe mechanical welding tool with track guiding device and welding method
By introducing trajectory guidance devices and welding gun fixing devices into the semi-pipe mechanical welding tooling, the problems of unstable quality and low efficiency of traditional manual argon arc welding process when welding cylinders and semi-pipe angle joints are solved, and a higher quality and efficiency welding effect is achieved.
Patent Information
- Application Number
- CN202510346019.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-05-06
AI Technical Summary
When welding the corner joints between the cylinder and the half-pipe, the traditional manual argon arc welding process has problems such as unstable welding quality, low operating efficiency, and easy to appear defects, which affects the mechanical properties and seal reliability of the welds.
The semi-pipe mechanical welding tool with a track guide device is adopted. Through the cylinder rotating device and the track guide device, the welding gun fixing device and the track guide device are relatively fixed. The welding gun moves with the track guide device, and the welding site always points to the root of the connection between the half-pipe and the cylinder.
It reduces the installation error interference between the half pipe and the cylinder, improves the welding quality and efficiency, reduces apparent defects, and improves the mechanical properties and seal reliability of the welds.
Smart Images
Figure CN119927364A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of welding technology, and in particular to a half-pipe mechanical welding tool and a welding method with a trajectory guiding device. Background Art
[0002] In the chemical production process, reactor equipment often adopts an external buckled half-tube structure to meet the heat transfer requirements. This structure effectively improves the heat transfer efficiency by increasing the heat transfer area, providing a guarantee for the stable operation of the reaction process. However, in the field of pressure vessel manufacturing, the welding process of the corner joint between the cylinder and the half-tube faces special technical requirements: a full penetration structure must be achieved, and the back weld cavity must be inspected for quality through an endoscope, which places strict requirements on the stability and consistency of the welding process.
[0003] The traditional manual argon arc welding process has significant limitations in practical applications: first, the welding quality is significantly affected by the fluctuation of the welder's skill level, which can easily lead to uneven weld quality; second, the process characteristics determine that arc starting and arc ending operations need to be performed frequently, which not only increases the number of welding joints, but also affects the work efficiency due to the limitation of welding wire length and the adjustment of welder's operating posture; third, it is easy to have surface defects such as undercut and uneven weld width, which directly affects the mechanical properties and sealing reliability of the weld. Summary of the invention
[0004] In order to solve or alleviate at least one of the technical problems mentioned in the background technology, the present application provides a half-pipe mechanical welding tool and a welding method with a trajectory guiding device.
[0005] The present application provides a half-pipe mechanical welding tool with a trajectory guide device, which is used for welding between a cylinder and a half-pipe. The half-pipe mechanical welding tool with a trajectory guide device includes:
[0006] a barrel rotating device capable of rotating the barrel around the central axis of the barrel, the barrel being provided with the helically extending half-tube;
[0007] A trajectory guide device, the trajectory guide device is configured to slide in the axial direction of the cylinder, the trajectory guide device comprises a half-pipe trajectory tracking block, the half-pipe trajectory tracking block is configured to fit the convex outer arc surface of the half-pipe, and after the cylinder rotates, the trajectory guide device can move along the axial direction under the constraint of the spiral extension structure of the half-pipe;
[0008] A welding gun fixing device is used to fix the welding gun, and the welding gun fixing device is configured to be fixed relative to the trajectory guide device, so that the welding gun can move with the trajectory guide device, and the welding site can always point to the root of the half pipe connected to the cylinder.
[0009] In at least one embodiment, at least one arc-shaped abutment portion is disposed on the half-pipe trajectory tracking block, and the arc-shaped abutment portion is butted against the outer arc surface of the half-pipe.
[0010] In at least one embodiment, the trajectory guiding device includes two half-pipe trajectory tracking blocks spaced apart from each other, and the two half-pipe trajectory tracking blocks are simultaneously docked at two positions of the outer curved surface of the half-pipe.
[0011] In at least one embodiment, a plurality of universal balls extending along the arc line of the arc-shaped abutment portion are disposed on the inner side of the half-pipe trajectory tracking block, and the universal balls can be fitted to the outer arc surface.
[0012] In at least one embodiment, the trajectory guide device and the welding gun fixing device are configured to be able to change positions in a vertical direction.
[0013] In at least one embodiment, the relative positions of the trajectory guide device and the welding gun fixing device in the axial direction are configured to be controllably adjustable.
[0014] In at least one embodiment, the half-pipe mechanical welding tool with a trajectory guide device includes:
[0015] An axial guide rail, the trajectory guiding device is fixed to the axial guide rail;
[0016] A slider, which is slidably connected to the axial guide rail in the axial direction, and the slider is used to be fixed to a ground frame or a bracket;
[0017] A mounting plate, the mounting plate being fixed to the axial guide rail;
[0018] A position adjustment block is movably connected to the mounting plate in the axial direction, and the welding gun fixing device is fixed to the position adjustment block.
[0019] In at least one embodiment, the half-pipe mechanical welding tool with a trajectory guide device includes an arc voltage tracker, and the arc voltage tracker is configured to be fixed relative to the welding gun fixing device.
[0020] The welding method provided in the present application uses the half-pipe mechanical welding tool with a trajectory guiding device as described above.
[0021] In at least one embodiment, a welding method includes:
[0022] The half-pipe trajectory tracking block of the trajectory guiding device is made to fit with the outer arc surface of the half-pipe, and the welding gun is fixed to the welding gun fixing device;
[0023] Rotating the cylinder so that the trajectory guiding device moves along the axial direction under the constraint of the spiral extension structure of the half pipe;
[0024] While the trajectory guide device moves axially, the welding gun welds the root portion and the barrel.
[0025] The present application sets a trajectory guiding device in the welding tooling, and then connects a welding gun fixing device with the trajectory guiding device. The trajectory guiding device moves axially under the constraint of the spiral extension structure of the half-tube, and the welding gun can also move in a controlled manner, thereby reducing the interference of installation errors between the half-tube and the cylinder body and improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 A schematic diagram of a half-pipe mechanical welding tool with a trajectory guiding device according to an embodiment of the present application is shown.
[0027] Figure 2 Shows Figure 1 A partial enlarged view of the welding area of the welding tool.
[0028] Figure 3 Shows Figure 1 Side view of the barrel area of the welding fixture.
[0029] Description of Reference Numerals
[0030] 100 Barrel
[0031] 200 Half Pipe
[0032] 210 outer arc surface
[0033] 220 Root
[0034] 300 Cylinder Rotating Device
[0035] 310 Roller Stand
[0036] 320 Roller
[0037] 400 Track Guidance Device
[0038] 410 Half-pipe Tracking Block
[0039] 411 arc-shaped abutment portion
[0040] 420 Universal ball
[0041] 510 Axial Guide Rail
[0042] 520 Slider
[0043] 530 Mounting Plate
[0044] 540 Position adjustment block
[0045] 550 Ground Frame
[0046] 560 Vertical Direction Guide Rail
[0047] 600 Welding gun fixture
[0048] 610 welding gun
[0049] 620 Arc Voltage Tracker
[0050] 710 Wire Feed Reel
[0051] 720 Wire Feeder
[0052] 730 Wire Guide Tube DETAILED DESCRIPTION
[0053] The exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.
[0054] Taking the reactor as an example, there may be errors when the half-tube is installed on the cylinder, resulting in differences in the pitch (the distance between two adjacent arc surfaces in the axial direction). General machine welding (such as mechanical argon arc welding) tooling cannot determine the appropriate welding position based on this error. When using laser and other recognition systems to correct the welding position, on the one hand, it is difficult to accurately identify the half-tube because it is mostly made of stainless steel. On the other hand, in order to ensure safety and maximize accuracy, the processing site is usually required to be closed, the setting process is complicated, and the cost is high.
[0055] The present application provides a half-pipe mechanical welding tool (hereinafter sometimes referred to as "welding tool") and a welding method with a trajectory guide device. For example, the welding tool and the welding method can be used for mechanical argon arc welding of a fillet joint between a half-pipe 200 and a cylinder 100 of a reactor. The half-pipe 200 can be spirally extended on the cylinder 100.
[0056] See also Figure 1 , Figure 2 , Figure 3 The welding tool may include a barrel rotating device 300 , a trajectory guiding device 400 and a welding gun fixing device 600 .
[0057] See also Figure 3 The drum rotating device 300 can rotate the drum 100 around the central axis of the drum 100. The drum rotating device 300 may include a plurality of pairs of roller frames 310, the drum 100 is supported on rollers 320 of the roller frames 310, and the rollers 320 themselves can be driven to rotate by a motor, and then the rollers 320 drive the drum 100 to rotate around the axis of the drum 100 through friction.
[0058] See also Figure 2 The trajectory guide device 400 is configured to slide in the axial direction (the specific implementation method will be described later). The trajectory guide device 400 includes a half-pipe trajectory tracking block 410, which is attached to the outer arc surface 210 of the half-pipe 200 protruding toward the outside of the cylinder 100. After the cylinder 100 rotates, the trajectory guide device 400 can move in the axial direction under the constraint of the spiral extension structure of the half-pipe 200. Here, the cross section of the half-pipe 200 can be semicircular or C-shaped.
[0059] The welding gun fixture 600 is used to fix the welding gun 610. The welding gun fixture 600 is configured to be relatively fixed with the trajectory guide device 400, so that the welding gun 610 can move with the trajectory guide device 400, and the welding position can always point to the root 220 of the half pipe 200 connected to the cylinder 100. Exemplarily, the welding position and the trajectory guide device 400 can be staggered (for example, staggered in the circumferential direction) to avoid interference.
[0060] Therefore, the present application sets a trajectory guiding device in the welding tooling, and then installs the welding gun fixing device and the trajectory guiding device. The trajectory guiding device moves axially under the constraint of the spiral extension structure of the half-tube, and the welding gun can also move in a controlled manner, thereby reducing the interference of installation errors between the half-tube and the cylinder body and improving the welding quality.
[0061] In one embodiment, see Figure 2 At least one arc-shaped abutting portion 411 is disposed on the half-pipe trajectory tracking block 410 , and the arc-shaped abutting portion 411 is butted against an outer arc surface 210 of the half-pipe 200 .
[0062] Of course, when welding half pipes 200 of different sizes, half pipe trajectory tracking blocks 410 having arc-shaped abutment portions 411 of corresponding sizes can be replaced to increase the adaptability of the welding tool. The present application does not limit the specific shape of the half pipe trajectory tracking block 410.
[0063] In one embodiment, see Figure 2 The trajectory guide device 400 may include two spaced-apart half-pipe trajectory tracking blocks 410, which are simultaneously connected to two positions (e.g., two positions in the circumferential direction) of the outer arc surface 210 of the half-pipe 200. The connecting line of the two positions is substantially perpendicular to the axial direction and the vertical direction.
[0064] In one embodiment, see Figure 2A plurality of universal balls 420 (for example, three universal balls 420 arranged along the arc line) extending along the arc line of the arc-shaped abutment portion 411 are arranged on the inner side of the half-pipe trajectory tracking block 410. The universal balls 420 can fit the outer arc surface 210, so that the relative movement of the outer arc surface 210 and the half-pipe trajectory tracking block 410 and the axial movement of the trajectory guiding device 400 are smoother.
[0065] In one embodiment, see Figure 2 The relative positions of the trajectory guide device 400 and the welding gun fixing device 600 in the axial direction are set to be controllably adjustable. Thus, the welding gun position can be finely adjusted, and the angle of the welding gun can be adjusted to meet more welding requirements.
[0066] More specifically, the welding tool may include an axial guide rail 510 and a slider 520. The track guide device 400 is fixed to the axial guide rail 510. The slider 520 is slidably connected to the axial guide rail 510 in the axial direction, and the slider 520 is used to be fixed to the ground frame 550 or other brackets. In this way, the requirement of the track guide device 400 sliding in the axial direction can be achieved.
[0067] The welding tool may further include a mounting plate 530 and a position adjustment block 540. The mounting plate 530 is fixed to the axial guide rail 510. The position adjustment block 540 is movably connected to the mounting plate 530 in the axial direction, and the welding gun fixture 600 is fixed to the position adjustment block 540. Thus, the trajectory guide device 400 and the welding gun fixture 600 can be kept relatively fixed and the spacing can be finely adjusted.
[0068] Exemplarily, a screw structure may be provided on the position adjustment block 540 , and the moving distance of the position adjustment block 540 on the mounting plate 530 may be controlled by the screw.
[0069] In one embodiment, see Figure 2 The track guide device 400 and the welding gun fixing device 600 are configured to be able to change their positions in the vertical direction. Thus, by adjusting the height of the track guide device 400 and the welding gun fixing device 600, cylinders 100 and half pipes 200 of different sizes can be adapted.
[0070] For example, a screw structure may be provided on the axial guide rail 510 to achieve movement in the vertical direction. A vertical direction guide rail 560 may be provided to constrain the movement track of the axial guide rail 510 .
[0071] In one embodiment, see Figure 2The welding tool may include an arc voltage tracker 620, which is configured to be fixed relative to the welding gun fixture 600. The arc voltage tracker 620 dynamically adjusts the height of the welding gun 610 by real-time monitoring of the arc voltage, so that the distance between the welding gun 610 and the welding pool remains unchanged, so that the root 220 weld can be fully penetrated and the consistency of the welding process is maintained.
[0072] In one embodiment, see Figure 2 The welding tool may further include a wire feeding reel 710, a wire feeding machine 720 and a wire feeding tube 730. The welding wire may be stored in the wire feeding reel 710, and when the wire feeding machine 720 plays a traction role and the wire feeding tube 730 plays a guiding role, the welding wire may be transported from the wire feeding reel 710 to the welding site.
[0073] The welding method provided in the present application can use the aforementioned half-pipe mechanical welding tool with a trajectory guiding device.
[0074] More specifically, the welding method may include:
[0075] The half-pipe trajectory tracking block 410 of the trajectory guiding device 400 is made to fit with the outer arc surface 210 of the half-pipe 200 , and the welding gun 610 is fixed to the welding gun fixing device 600 .
[0076] The cylinder 100 is rotated so that the trajectory guide device 400 moves in the axial direction under the constraint of the spiral extension structure of the half pipe 200 .
[0077] While the trajectory guide device 400 moves axially, the welding gun 610 welds the root portion 220 and the barrel 100 .
[0078] The welding method provided in the present application is based on the original manual argon arc welding or manual arc welding, and can adapt to the mechanized welding of corner joint welds of cylinders 100 and half pipes 200 of different diameters by manufacturing welding track tooling.
[0079] This welding method can more accurately control the welding arc and the feeding of the welding wire, making the appearance of the weld more uniform, neat, and smooth, with better forming quality, reducing the problems of undercut and uneven weld width that may occur in manual argon arc welding or manual arc welding, and further improving the overall performance of the reactor. This welding method can continuously perform welding operations, greatly improving welding efficiency.
[0080] The equipment is relatively simple to operate and can be used after a short period of training, which lowers the technical threshold for operators.
[0081] The above is a preferred embodiment of the present application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A half-pipe mechanical welding tool with a trajectory guiding device, used for welding between a cylinder (100) and a half-pipe (200), characterized in that: include: A barrel rotating device (300) capable of rotating the barrel (100) around the central axis of the barrel (100), wherein the barrel (100) is provided with the helically extending half pipe (200); A trajectory guide device (400), the trajectory guide device (400) being configured to be able to slide in the axial direction of the cylinder (100), the trajectory guide device (400) comprising a half-pipe trajectory tracking block (410), the half-pipe trajectory tracking block (410) being configured to fit the convex outer arc surface (210) of the half-pipe (200), and after the cylinder (100) rotates, the trajectory guide device (400) can move along the axial direction under the constraint of the spiral extension structure of the half-pipe (200); A welding gun fixing device (600) is used to fix a welding gun (610), and the welding gun fixing device (600) is configured to be fixed relative to the trajectory guide device (400), so that the welding gun (610) can move with the trajectory guide device (400), and the welding position can always point to the root (220) of the half pipe (200) connected to the cylinder (100).
2. The half-pipe mechanical welding tool with a trajectory guiding device according to claim 1 is characterized in that: At least one arc-shaped abutment portion (411) is provided on the half-pipe trajectory tracking block (410), and the arc-shaped abutment portion (411) is butted against the outer arc surface (210) of the half-pipe (200).
3. The half-pipe mechanical welding tool with a trajectory guiding device according to claim 2 is characterized in that: The trajectory guiding device (400) comprises two spaced-apart half-pipe trajectory tracking blocks (410), and the two half-pipe trajectory tracking blocks (410) are simultaneously docked at two positions of the outer arc surface (210) of the half-pipe (200).
4. The half-pipe mechanical welding tool with a trajectory guiding device according to claim 2 or 3, characterized in that: A plurality of universal balls (420) extending along the arc line of the arc-shaped abutment portion (411) are arranged on the inner side of the half-pipe trajectory tracking block (410), and the universal balls (420) can be fitted to the outer arc surface (210).
5. The half-pipe mechanical welding tool with a trajectory guiding device according to claim 1 is characterized in that: The trajectory guide device (400) and the welding gun fixing device (600) are configured to be able to change their positions in a vertical direction.
6. The half-pipe mechanical welding tool with a trajectory guiding device according to claim 1 is characterized in that: The relative positions of the trajectory guide device (400) and the welding gun fixing device (600) in the axial direction are arranged to be controllably adjustable.
7. The half-pipe mechanical welding tool with a trajectory guiding device according to claim 6 is characterized in that: The half-pipe mechanical welding tool with a trajectory guiding device comprises: An axial guide rail (510), the trajectory guiding device (400) being fixed to the axial guide rail (510); A slider (520) which is slidably connected to the axial guide rail (510) in the axial direction, and the slider (520) is used to be fixed to a ground frame (550) or a bracket; A mounting plate (530), wherein the mounting plate (530) is fixed to the axial guide rail (510); A position adjustment block (540) is movably connected to the mounting plate (530) in the axial direction, and the welding gun fixing device (600) is fixed to the position adjustment block (540).
8. The half-pipe mechanical welding tool with a trajectory guiding device according to claim 1 is characterized in that: The half-pipe mechanical welding tool with a trajectory guiding device comprises an arc voltage tracker (620), and the arc voltage tracker (620) is configured to be fixed relative to the welding gun fixing device (600).
9. A welding method, characterized in that: A half-pipe mechanical welding tool with a trajectory guide device according to any one of claims 1 to 8 is used.
10. The welding method according to claim 9, characterized in that: include: The half-pipe trajectory tracking block (410) of the trajectory guiding device (400) is made to fit the outer arc surface (210) of the half-pipe (200), and the welding gun (610) is fixed to the welding gun fixing device (600); Rotating the cylinder (100) so that the trajectory guiding device (400) moves along the axial direction under the constraint of the spiral extension structure of the half pipe (200); While the trajectory guide device (400) moves axially, the welding gun (610) welds the root portion (220) and the barrel (100).