Angle steel welding robot
By using a dual positioning mechanism design, the robot achieves precise positioning and stable welding of angle steel, solving the problems of unstable positioning and insufficient adaptability in the existing angle steel welding process, and improving welding quality and equipment efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU TAICHANG TOWER MFG
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-08
AI Technical Summary
Existing angle steel welding robots lack an effective dynamic positioning mechanism when welding long angle steel, causing elastic deformation in the middle section due to welding thermal deformation and mechanical vibration. This affects the weld trajectory, causing it to deviate from the preset path. The cumulative deformation is particularly significant during multi-layer and multi-pass welding, affecting the forming quality. Furthermore, traditional positioning devices are difficult to quickly adjust to adapt to different specifications of angle steel.
The design employs a dual positioning mechanism, comprising a first positioning mechanism and a second positioning mechanism. These mechanisms, linked by guide rails and adjustable limit components, form a vertical angle, ensuring precise positioning of the angle steel and control of the welding angle. The first positioning mechanism provides axial positioning through synchronously moving positioning block groups, while the second positioning mechanism provides vertical constraint through rotational adjustment and magnetic chuck components, adapting to the welding requirements of angle steels of different specifications.
It achieves precise positioning and stable welding of angle steel, prevents processing deviation, improves the adaptability and operational safety of the equipment, and reduces positioning errors and operation time.
Smart Images
Figure CN224209324U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a welding device, and more particularly to an angle steel welding robot. Background Technology
[0002] Angle steel welding robots have been widely used in steel structure manufacturing, power transmission tower assembly, and mechanical equipment frame construction. In typical applications, operators place the angle steel workpiece to be welded on a horizontal work platform. The welding robot then uses a vision system to identify the weld position and controls a six-axis robotic arm to carry the welding torch along a preset path to perform the welding operation. Existing systems are typically equipped with pneumatic clamping devices to fix both ends of the angle steel, and laser tracking sensors correct the welding trajectory in real time. The welding process allows for adaptive adjustment of the welding torch angle, current, and voltage parameters. Some advanced equipment also integrates automatic loading and unloading mechanisms, forming a semi-continuous production line from workpiece transport to welding, significantly improving the efficiency of mass production of angle steel components.
[0003] However, current technology still has significant shortcomings in practical applications. Its core deficiency lies in the lack of an effective dynamic positioning mechanism on the work platform. When welding long angle steel, existing pneumatic clamps only provide point-like fixation at both ends of the workpiece. The middle section is prone to elastic deformation under the influence of welding heat deformation and mechanical vibration, causing the weld trajectory to deviate from the preset path. Especially during multi-layer, multi-pass welding, the cumulative deformation caused by repeated heat input can lead to millimeter-level displacement of the angle steel, directly affecting the uniformity of the weld penetration and the appearance quality of the butt weld. Furthermore, traditional positioning devices lack rapid adjustment functions for angle steel of different specifications. When changing workpieces, manual recalibration of the reference surface is required, reducing equipment utilization and increasing operational safety hazards. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an angle steel welding robot that offers more stable positioning of angle steel.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an angle steel welding robot, comprising a robot for welding angle steel and a platform for placing angle steel, wherein the platform is provided with a positioning device for positioning angle steel, the positioning device comprising a first positioning mechanism and a second positioning mechanism for positioning one angle steel respectively, wherein the first positioning mechanism and the second positioning mechanism enable the two angle steels to form a perpendicular angle between each other after positioning.
[0006] The beneficial effects of this invention are as follows: by setting two independent positioning mechanisms to form a synergistic effect of vertical angle, precise positioning and welding angle control of double angle steel can be achieved. The first positioning mechanism provides an axial positioning reference through a synchronously moving group of positioning blocks, while the second positioning mechanism provides vertical constraint through an adjustable limiting component. The cooperation of the two ensures that the welding angle has a stable geometric relationship in three-dimensional space. As a preferred embodiment, the first positioning mechanism can adopt a linkage slide table structure with guide grooves, and the two positioning blocks achieve synchronous symmetrical movement through gear and rack transmission, ensuring that the center lines of the two positioning blocks always coincide. The second positioning mechanism can adopt a slide rail assembly with a rotating adjustment disc, which precisely controls the offset angle of the limiting block through a dial, and achieves rapid setting of the vertical angle with the help of locking pins. This structural combination can prevent processing deviation and adapt to the welding requirements of angle steel of different specifications.
[0007] Furthermore, the first positioning mechanism includes two first positioning blocks that are slidably disposed on the platform. Each of the two first positioning blocks is provided with a first limiting hole for the insertion of an angle steel. The two first positioning blocks are connected by a guide rail so that the center lines of the two first positioning blocks always coincide.
[0008] The beneficial effects of this technical solution are as follows: the guide rail linkage structure enables the synchronous and symmetrical movement of the two positioning blocks, ensuring the alignment accuracy of the axes of the two angle steels. As a preferred method, the guide rail can be a double-row ball linear guide, with its ball retainer connected to the bottom of the positioning block via a flange. Limit buffer pads are installed at both ends of the guide rail, ensuring smooth sliding and preventing over-impact damage. The centerline of the guide rail forms a spatial perpendicular relationship with the axis of the limit hole, ensuring that the angle steel naturally forms the target angle after insertion through the three-point positioning principle. Compared to independently moving positioning blocks, this rigid connection method reduces positioning errors.
[0009] Furthermore, the guide rail is positioned above the limiting hole.
[0010] The beneficial effects of this technical solution are as follows: placing the guide rail above the limiting hole avoids interference between the guide rail and the angle steel being welded during the welding process, and prevents the accumulation of welding spatter from affecting the sliding accuracy, while also optimizing the equipment's spatial layout. As a preferred method, the guide rail mounting bracket adopts a cantilever structure, with its supporting columns forming triangular reinforcing ribs with the platform sidewall, ensuring structural rigidity while providing sufficient space for welding operations below. The guide rail cover is made of high-temperature resistant ceramic-coated steel plate, capable of withstanding the instantaneous high temperatures during welding and protecting the internal ball bearings from thermal deformation.
[0011] Furthermore, the first positioning block is provided with a first slider, a first positioning bolt and a positioning hole that cooperates with the first positioning bolt. The side and upper surfaces of the platform are respectively provided with a first positioning groove for the first positioning bolt to slide in and a first sliding groove for the first slider to move in. The first positioning bolt and the positioning hole cooperate to prevent the first positioning block from sliding along the first sliding groove.
[0012] The beneficial effects of this technical solution are as follows: the dual-channel positioning system achieves multi-degree-of-freedom constraints on the positioning block. As a preferred method, the positioning bolt adopts a trapezoidal thread design, with its pitch matching the width of the groove. When the bolt is screwed into the positioning hole, the conical end simultaneously presses against the sidewall and bottom surface of the groove, forming a stable three-point contact locking state. The groove is embedded with a PTFE wear-resistant bushing, which reduces the coefficient of friction and absorbs impact vibrations during positioning.
[0013] Furthermore, the first positioning block includes a first base and a first top cover that are hinged together. After the two are assembled, a first locking hole is formed on the opposite side of the hinge. The first positioning block also includes a first locking bolt inserted into the first locking hole. The first locking bolt is used to prevent the first base and the first top cover from opening and closing.
[0014] The beneficial effects of this technical solution are as follows: the split-structure design improves the efficiency of angle steel loading and unloading. As a preferred method, the hinge shaft adopts a quick-release pin structure, with a spring clip at one end of the pin for quick assembly and disassembly; the inner wall of the first locking hole is machined with a spiral guide groove, and when the locking bolt is screwed in, the tapered head at its end generates a radial expansion force along the guide groove, creating a pre-tightening force on the mating surface between the base and the top cover, ensuring clamping stability. This structure can shorten the loading and unloading time while ensuring locking force.
[0015] Furthermore, the second positioning mechanism includes a second positioning block, on which a second slider is provided, and on the upper surface of the platform a second sliding groove for the second slider to move within it; a limit block is slidably provided inside the second positioning block, and a second limit hole for an angle steel to pass through is provided on the limit block; a second positioning groove and a second positioning bolt that cooperate with it are provided on the upper surface of the second positioning block, and the second positioning bolt abuts against the limit block to prevent the limit block from sliding.
[0016] The beneficial effects of this technical solution are as follows: the adjustable limiting structure enables dynamic adjustment of the welding angle. As a preferred method, a dovetail-shaped guide key is provided at the bottom of the limiting block, which cooperates with the guide groove in the second positioning block to ensure the accuracy of the sliding trajectory; the end of the locking bolt uses a hemispherical indenter, which, in conjunction with the V-shaped indentation on the surface of the limiting block, produces a point-contact locking effect, ensuring locking reliability while avoiding deformation caused by excessive tightening. A laser-graded scale is provided in the slide groove, working in conjunction with the pointer markings on the limiting block, to facilitate precise positioning by the operator.
[0017] Furthermore, magnetic suction elements are respectively provided on the corresponding end faces of the first positioning block and the second positioning block. The two magnetic suction elements cooperate to prevent relative displacement between the first positioning block and the second positioning block during the welding process.
[0018] The beneficial effects of this technical solution are as follows: the magnetically assisted positioning system enhances the overall rigidity of the positioning mechanism. As a preferred method, the magnetic attractant employs an array of neodymium iron boron magnets with alternating polarities, forming a closed magnetic circuit upon contact and generating a uniform attraction force. The magnet surface is plated with an anti-corrosion nickel layer, and a rubber buffer ring is placed around it, which can prevent the attraction of metal debris and absorb impacts.
[0019] Furthermore, the second positioning block includes a second base and a second top cover that are hinged together. After the two are assembled, a second locking hole is formed on the opposite side of the hinge. The second positioning block also includes a second locking bolt inserted into the second locking hole. The second locking bolt is used to prevent the second base and the second top cover from opening and closing.
[0020] The beneficial effect of this technical solution is that the split structure design improves the efficiency of loading and unloading angle steel. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0022] Figure 2 This is a schematic diagram of the first positioning mechanism according to an embodiment of the present utility model;
[0023] Figure 3 This is a schematic diagram of the second positioning mechanism in an embodiment of the present utility model;
[0024] Figure 4 This is a front view of an embodiment of the present utility model. Detailed Implementation
[0025] This utility model embodiment provides an angle steel welding robot, such as... Figure 1-4As shown: This includes a robot 6 for welding angle steel and a platform 1 for placing the angle steel. The platform 1 is equipped with a positioning device 2 for positioning the angle steel. The positioning device 2 includes a first positioning mechanism 3 and a second positioning mechanism 4 for positioning one angle steel, respectively. The first positioning mechanism 3 and the second positioning mechanism 4 make the two angle steels form a perpendicular angle between each other after positioning.
[0026] The first positioning mechanism 3 includes two first positioning blocks 31 that are slidably disposed on the platform 1. Each of the two first positioning blocks 31 is provided with a first limiting hole 311 for inserting an angle steel. The two first positioning blocks 31 are connected by a guide rail 32, which is disposed above the first limiting hole 311 so that the center lines of the two first positioning blocks 31 always coincide. The first positioning block 31 is provided with a first slider 312, a first positioning bolt 313, and a positioning hole 314 that mates with the first positioning bolt 313. The side and upper surfaces of the platform 1 are respectively provided with a first positioning groove 11 for the first positioning bolt 313 to slide within it and a first sliding groove 12 for the first slider 312 to move within it. The first positioning bolt 313 and the positioning hole 314 cooperate to prevent the first positioning block 31 from sliding along the first sliding groove 12. The first positioning block 31 includes a first base 315 and a first top cover 316 that are hinged together. After the two are assembled, a first locking hole (not shown in the figure) is formed on the opposite side of the hinge. The first positioning block 31 also includes a first locking bolt 318 inserted into the first locking hole (not shown in the figure). The first locking bolt 318 is used to prevent the first base 315 and the first top cover 316 from opening and closing.
[0027] The second positioning mechanism 4 includes a second positioning block 41, on which a second slider 411 is provided. The upper surface of the platform 1 is provided with a second sliding groove 13 for the second slider 411 to move within it. A limit block 42 is slidably disposed within the second positioning block 41. The limit block 42 has a second limiting hole 421 for the angle steel to pass through. The upper surface of the second positioning block 41 is provided with a second positioning groove 412 and a corresponding second positioning bolt 413. The second positioning bolt 413 abuts against the limit block 42 to prevent the limit block 42 from sliding. Magnetic suction elements 5 are respectively provided on the corresponding end faces of the first positioning block 31 and the second positioning block 41. The two magnetic suction elements 5 cooperate to prevent relative displacement between the first positioning block 31 and the second positioning block 41 during the welding process. The second positioning block 41 includes a second base 414 and a second top cover 415 that are hinged together. After the two are assembled, a second locking hole (not shown in the figure) is formed on the opposite side of the hinge. The second positioning block 41 also includes a second locking bolt 417 inserted into the second locking hole (not shown in the figure). The second locking bolt 417 is used to prevent the second base 414 and the second top cover 415 from opening and closing.
[0028] Working principle: In use, according to the size of the angle steel to be welded, first slide the first positioning block 31 on the platform 1, and the first slider 312 moves within the first slide groove 12 to adjust the distance between the two first positioning blocks 31. After adjustment, insert the first positioning bolt 313 through the first positioning groove 11 into the positioning hole 314 to fix the position of the first positioning block 31. Insert an angle steel into the first limiting hole 311 of the two first positioning blocks 31, and then assemble the first base 315 and the first top cover 316. Insert the first locking bolt 318 into the first locking hole (not shown in the figure) to lock the first positioning block 31 and fix the angle steel. Next, slide the second positioning block 41, and move the second slider 411 within the second slide groove 13 to adjust the position of the second positioning block 41. Then slide the limiting block 42 within the second positioning block 41 to align the second limiting hole 421 with the appropriate position. Secure the limiting block 42 with the second positioning bolt 413. Another angle steel is inserted into the second limiting hole 421 of the limiting block 42. Then, the second base 414 and the second top cover 415 are assembled, and the second locking bolt 417 is inserted into the second locking hole (not shown in the figure) to lock the second positioning block 41 and fix the angle steel. Since the magnetic suction pieces 5 on the corresponding end faces of the first positioning block 31 and the second positioning block 41 attract each other, the two angle steels maintain a perpendicular angle. At this time, the robot 6 can weld the two angle steels. After welding is completed, the first locking bolt 318 and the second locking bolt 417 are unlocked in sequence, the first top cover 316 and the second top cover 415 are opened, and the welded angle steel is taken out.
[0029] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.
Claims
1. An angle steel welding robot, comprising a robot for welding angle steel and a platform for placing the angle steel, wherein the platform is provided with a positioning device for positioning the angle steel, characterized in that: The positioning device includes a first positioning mechanism and a second positioning mechanism for positioning an angle steel, which enable the two angle steels to form a perpendicular angle between each other after positioning.
2. The angle steel welding robot according to claim 1, characterized in that: The first positioning mechanism includes two first positioning blocks that are slidably mounted on the platform. Each of the two first positioning blocks is provided with a first limiting hole for the insertion of an angle steel. The two first positioning blocks are connected by a guide rail so that the center lines of the two first positioning blocks always coincide.
3. The angle steel welding robot according to claim 2, characterized in that: The guide rail is positioned above the limiting hole.
4. The angle steel welding robot according to claim 2, characterized in that: The first positioning block is provided with a first slider, a first positioning bolt and a positioning hole that cooperates with the first positioning bolt. The side and upper surfaces of the platform are respectively provided with a first positioning groove for the first positioning bolt to slide in and a first sliding groove for the first slider to move in. The first positioning bolt and the positioning hole cooperate to prevent the first positioning block from sliding along the first sliding groove.
5. The angle steel welding robot according to any one of claims 2-4, characterized in that: The first positioning block includes a first base and a first top cover that are hinged together. After the two are assembled, a first locking hole is formed on the opposite side of the hinge. The first positioning block also includes a first locking bolt inserted into the first locking hole. The first locking bolt is used to prevent the first base and the first top cover from opening and closing.
6. The angle steel welding robot according to claim 2, characterized in that: The second positioning mechanism includes a second positioning block, on which a second slider is provided. The upper surface of the platform is provided with a second sliding groove for the second slider to move within it. A limit block is slidably provided inside the second positioning block. The limit block is provided with a second limiting hole for an angle steel to pass through. The upper surface of the second positioning block is provided with a second positioning groove and a second positioning bolt that cooperates with it. The second positioning bolt abuts against the limit block to prevent the limit block from sliding.
7. The angle steel welding robot according to claim 6, characterized in that: Magnetic suction elements are respectively provided on the corresponding end faces of the first positioning block and the second positioning block. The two magnetic suction elements cooperate to prevent relative displacement between the first positioning block and the second positioning block during the welding process.
8. The angle steel welding robot according to claim 6, characterized in that: The second positioning block includes a second base and a second top cover that are hinged together. After the two are assembled, a second locking hole is formed on the opposite side of the hinge. The second positioning block also includes a second locking bolt inserted into the second locking hole. The second locking bolt is used to prevent the second base and the second top cover from opening and closing.