Laser filler wire welding device and filler wire welding method
By introducing multiple motors and arm mechanisms into the laser wire fill welding device, the automatic angle and height adjustment of the welding body is achieved, which solves the problem that existing devices cannot automatically adjust the welding angle, and improves the adaptability and flexibility of the welding device , ensure welding quality.
Patent Information
- Application Number
- CN202411686144.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-24
- Publication Date
- 2025-02-18
AI Technical Summary
The existing laser wire fill welding devices cannot automatically adjust the welding angle through the control system, resulting in frequent manual adjustments, which reduces the adaptability and flexibility of the welding device.
By introducing multiple motors and arm mechanisms into the laser wire fill welding device, automatic angle and height adjustment of the welding body is achieved, ensuring that the welding head can be automatically aligned with the welding area.
Automatic adjustment of welding angle and height is realized, the adaptability and flexibility of the welding device is improved, workpieces of different shapes and angles can be better handled, and welding quality can be improved.
Smart Images
Figure CN119457515A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of laser welding, in particular to a laser wire-filling welding device and a wire-filling welding method. Background Art
[0002] Welding is a processing method that heats two or more workpieces to the melting temperature so that they are combined with each other to form a whole. In welding, one or more filler materials (such as welding rods, welding wires or welding powder) are usually used to fill the weld or the gap between the filler materials to enhance the strength and stability of the welded joint. Welding is often used to connect materials such as metals and plastics. It is one of the very common processes in the manufacturing industry. According to the different heating methods and filler materials, welding can be divided into many types. Laser wire welding device is a device that uses laser as a heat source and welds by adding metal filler materials. The working principle of the laser wire welding device is to focus the laser beam on the welding area and introduce the metal filler material into the welding area at the same time. The filler material and the workpiece surface are melted by the thermal action of the laser, thereby achieving welding. Compared with traditional welding methods, laser wire welding has the advantages of small heat input, stable molten pool formation, fast welding speed, and high weld quality. It is suitable for welding and repairing various metal materials.
[0003] However, the existing laser wire welding device cannot automatically adjust the welding angle through the control system. The workpieces to be welded may have different geometric shapes and angles. The welding head cannot automatically adjust the angle, which will result in the need to frequently manually adjust the angle of the welding head when processing these workpieces of different shapes, resulting in the problem of low adaptability and flexibility of the welding device. Summary of the invention
[0004] In view of the shortcomings of the prior art, the present invention provides a laser wire-filling welding device and a wire-filling welding method, which solves the problem that the existing laser wire-filling welding device cannot automatically adjust the welding angle through the control system, resulting in the need to frequently manually adjust the angle of the welding head, resulting in low adaptability and flexibility of the welding device.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser wire-filling welding device, comprising a base, the upper surface of the base is rotatably connected to a first connecting shell, the outer wall of the first connecting shell is fixedly connected to a first motor, the inner wall of the first connecting shell is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a first arm, the outer wall of the first arm is rotatably connected to the outer wall of the first connecting shell, the outer wall of the first arm is rotatably connected to the second connecting shell, the outer wall of the second connecting shell is fixedly connected to a third motor, the outer wall of the second connecting shell is fixedly connected to a second arm, and the inner wall of the second arm is provided with a welding body.
[0006] Preferably, a wire-filling welding method of a laser wire-filling welding device comprises the following steps:
[0007] Step 1: Preparation: Determine the metal workpiece to be welded, clean and treat the welding surface to ensure that it is clean and smooth, and remove grease and oxides to improve welding quality and reliability. Select appropriate filler materials and welding wires that are similar or compatible with the workpiece material according to the material and requirements of the welding workpiece;
[0008] Step 2: Welding preparation: Load the welding wire into the wire filling system and control the welding head to automatically align it with the welding area;
[0009] Step 3: Laser beam focusing: At the beginning of the welding process, the laser welding machine focuses the laser beam to the welding area. By precisely adjusting the focal length and focal position of the laser beam, it ensures that the laser can accurately irradiate the position of the welding joint and form a high-energy-density heat source in the welding area.
[0010] Step 4: Wire feeding: At the same time, the wire is fed to the welding area through the wire filling system. The wire filling system controls the feeding speed and position of the wire to ensure that the wire contacts and melts the workpiece surface at the appropriate time and position. During the entire welding process, the welding speed needs to be precisely controlled to ensure the welding quality and the formation of the weld. Too fast a welding speed may result in an inadequate weld, while too slow a welding speed may cause overheating and deformation of the welding area. The welding speed should be adjusted to achieve the best welding effect.
[0011] Step 5: Molten pool formation: When the laser beam and welding wire act on the welding area at the same time, the welding wire and the workpiece surface melt at the same time to form a molten pool. The molten pool is a local melting area generated by a high-temperature heat source, in which the material of the welding wire and the workpiece surface material mix and melt to form a liquid metal pool;
[0012] Step 6: Welding wire filling: The welding wire in the molten pool is gradually delivered and filled into the weld to complete the welding process. The speed and amount of the filling wire need to be precisely controlled according to the size and requirements of the weld to ensure that the weld is fully filled and of good quality.
[0013] Step 7: Welding completion and quality inspection: After welding is completed, stop the laser welding and wire filling system, perform a visual inspection of the weld joint to ensure that the weld is uniform and has no obvious defects, use X-rays and ultrasonic waves to check the weld quality, measure the weld size and shape to ensure that it meets the design requirements, perform post-welding processing, remove welding residues, and polish the surface to improve welding quality and aesthetics.
[0014] Preferably, in step two, the first motor is first turned on. When the first motor starts running, it will drive the first connecting shell to rotate. When the first connecting shell starts to rotate, its lower surface will rotate on the upper surface of the base to adjust the left and right welding angles of the welding body. When the left and right welding angles are adjusted, the second motor is turned on. When the second motor starts running, it will drive the first arm at its output end to rotate. When the first arm is driven by the second motor to rotate, its outer wall will rotate on the outer wall of the first connecting shell. When the first arm rotates, it will drive the welding body to adjust its upper and lower welding angles. When the upper and lower welding angles of the welding body are adjusted, the third motor is turned on. When the third motor starts running, it will drive the second connecting shell to rotate. When the outer wall of the second connecting shell rotates on the outer wall of the first arm, it will drive the second arm of its outer wall to rotate. When the second arm is driven by the second connecting shell to rotate, it will drive the welding body on its inner wall to adjust its height up and down. The automatic adjustment of the angle and height can achieve the effect of aligning the welding head with the welding area.
[0015] Preferably, in step three, the wire preheating temperature is adjusted to be set between 150-300° C. to ensure smooth wire feeding and reduce gas impurities, and the laser power is usually set between 500 watts and 2000 watts for medium-thick metal workpieces.
[0016] Preferably, in step three, the laser beam diameter is set between 0.2 mm and 0.5 mm for finer welding diameters, the focal length is set between 100-200 mm to ensure that the laser welding head maintains an appropriate distance from the welding area, and the scanning speed is adjusted between 0.1-1 m / s.
[0017] Preferably, in step 4, the filling speed is set between 5 mm / s and 20 mm / s for a medium diameter welding wire.
[0018] Preferably, in step 4, the welding speed is set between 10 mm / s and 30 mm / s for a metal workpiece of medium thickness.
[0019] The present invention provides a laser wire-filling welding device and a wire-filling welding method.
[0020] Beneficial effects:
[0021] 1. The present invention drives the first connecting shell to rotate through the first motor, and the first connecting shell rotates on the upper surface of the base to adjust the left and right welding angles of the welding body. The second motor is turned on to drive the first support arm to rotate. When the first support arm rotates, it will drive the welding body to adjust its upper and lower welding angles, so as to achieve the effect of better controlling the angle and incident angle of the laser beam and the welding area by adjusting the angle of the welding head, optimizing the energy transfer and molten pool formation in the welding process, and improving the welding quality.
[0022] 2. The present invention starts the third motor to drive the second connecting shell to rotate, and when the second connecting shell rotates, it drives the second arm to rotate. When the second arm rotates, it drives the welding body to adjust the height up and down. Workpieces of different materials and thicknesses need to be welded at different welding focus positions, so that the height of the welding head can be adjusted and the position of the welding focus can be adjusted according to specific needs to achieve the best welding effect.
[0023] 3. By utilizing the characteristics of the laser beam, the laser wire-filling welding device of the present invention can realize precise control of welding parameters: laser power, scanning speed, and filling speed, thereby achieving the effect of obtaining high-quality welds. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A perspective view of the present invention;
[0025] Figure 2 The figure is a flow chart of the welding method of the present invention.
[0026] Among them, 1. base; 2. first connecting shell; 3. first motor; 4. second motor; 5. first arm; 6. second connecting shell; 7. third motor; 8. second arm; 9. welding body. DETAILED DESCRIPTION
[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0028] Embodiment 1:
[0029] like Figure 1 - Figure 2 As shown, an embodiment of the present invention provides a laser wire-filling welding device, including a base 1, the upper surface of the base 1 is rotatably connected to a first connecting shell 2, the outer wall of the first connecting shell 2 is fixedly connected to a first motor 3, the inner wall of the first connecting shell 2 is fixedly connected to a second motor 4, the output end of the second motor 4 is fixedly connected to a first arm 5, the outer wall of the first arm 5 is rotatably connected to the outer wall of the first connecting shell 2, the outer wall of the first arm 5 is rotatably connected to a second connecting shell 6, the outer wall of the second connecting shell 6 is fixedly connected to a third motor 7, the outer wall of the second connecting shell 6 is fixedly connected to a second arm 8, and the inner wall of the second arm 8 is provided with a welding body 9.
[0030] A wire-filling welding method of a laser wire-filling welding device comprises the following steps:
[0031] Step 1: Preparation: Determine the metal workpiece to be welded, clean and treat the welding surface to ensure that it is clean and smooth, and remove grease and oxides to improve welding quality and reliability. Select appropriate filler materials and welding wires that are similar or compatible with the workpiece material according to the material and requirements of the welding workpiece;
[0032] Step 2: Welding preparation: Load the welding wire into the wire filling system and control the welding head to automatically align it with the welding area;
[0033] Step 3: Laser beam focusing: At the beginning of the welding process, the laser welding machine focuses the laser beam to the welding area. By precisely adjusting the focal length and focal position of the laser beam, it ensures that the laser can accurately irradiate the position of the welding joint and form a high-energy-density heat source in the welding area.
[0034] Step 4: Wire feeding: At the same time, the wire is fed to the welding area through the wire filling system. The wire filling system controls the feeding speed and position of the wire to ensure that the wire contacts and melts the workpiece surface at the appropriate time and position. During the entire welding process, the welding speed needs to be precisely controlled to ensure the welding quality and the formation of the weld. Too fast a welding speed may result in an inadequate weld, while too slow a welding speed may cause overheating and deformation of the welding area. The welding speed should be adjusted to achieve the best welding effect.
[0035] Step 5: Molten pool formation: When the laser beam and welding wire act on the welding area at the same time, the welding wire and the workpiece surface melt at the same time to form a molten pool. The molten pool is a local melting area generated by a high-temperature heat source, in which the material of the welding wire and the workpiece surface material mix and melt to form a liquid metal pool;
[0036] Step 6: Welding wire filling: The welding wire in the molten pool is gradually delivered and filled into the weld to complete the welding process. The speed and amount of the filling wire need to be precisely controlled according to the size and requirements of the weld to ensure that the weld is fully filled and of good quality.
[0037] Step 7: Welding completion and quality inspection: After welding is completed, stop the laser welding and wire filling system, perform a visual inspection of the weld joint to ensure that the weld is uniform and has no obvious defects, use X-rays and ultrasonic waves to check the weld quality, measure the weld size and shape to ensure that it meets the design requirements, perform post-welding processing, remove welding residues, and polish the surface to improve welding quality and aesthetics.
[0038] In step 2, first start the first motor 3. When the first motor 3 starts running, it will drive the first connecting shell 2 to rotate. When the first connecting shell 2 starts to rotate, its lower surface will rotate on the upper surface of the base 1 to adjust the left and right welding angles of the welding body 9. After the left and right welding angles are adjusted, the second motor 4 is turned on. When the second motor 4 starts running, it will drive the first arm 5 at its output end to rotate. When the first arm 5 is driven by the second motor 4 to rotate, its outer wall will rotate on the outer wall of the first connecting shell 2. When the first arm 5 rotates, it will drive the welding body 9 to adjust its upper and lower welding angles. When the upper and lower welding angles of the welding body 9 are adjusted, the third motor 7 is turned on. When the third motor 7 starts running, it will drive the second connecting shell 6 to rotate. When the outer wall of the second connecting shell 6 rotates on the outer wall of the first arm 5, it will drive the second arm 8 of its outer wall to rotate. When the second arm 8 is driven by the second connecting shell 6 to rotate, it will drive the welding body 9 on its inner wall to adjust its height up and down. The automatic adjustment of the angle and height can achieve the effect of aligning the welding head with the welding area.
[0039] In step three, the wire preheating temperature is adjusted to between 150-300°C to ensure smooth wire feeding and reduce gas impurities. The laser power is usually set between 500 watts and 2000 watts for medium-thick metal workpieces.
[0040] In step three, the laser beam diameter is set between 0.2 mm and 0.5 mm for finer welding diameters, the focal length is set between 100-200 mm to ensure that the laser welding head maintains an appropriate distance from the welding area, and the scanning speed is adjusted between 0.1-1 m / s.
[0041] In step 4, the filling speed is set between 5 mm / s and 20 mm / s for medium diameter welding wire.
[0042] In step 4, the welding speed is set between 10 mm / s and 30 mm / s for medium-thick metal workpieces.
[0043] Table 1: Welding device parameter setting table
[0044]
[0045]
[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A laser wire welding device, comprising a base (1), characterized in that: The upper surface of the base (1) is rotatably connected to a first connecting shell (2), the outer wall of the first connecting shell (2) is fixedly connected to a first motor (3), the inner wall of the first connecting shell (2) is fixedly connected to a second motor (4), the output end of the second motor (4) is fixedly connected to a first support arm (5), the outer wall of the first support arm (5) is rotatably connected to the outer wall of the first connecting shell (2), the outer wall of the first support arm (5) is rotatably connected to a second connecting shell (6), the outer wall of the second connecting shell (6) is fixedly connected to a third motor (7), the outer wall of the second connecting shell (6) is fixedly connected to a second support arm (8), and the inner wall of the second support arm (8) is provided with a welding body (9).
2. A wire-filling welding method of a laser wire-filling welding device, according to the laser wire-filling welding device of claim 1, characterized in that: The following steps are involved: Step 1: Preparation: Determine the metal workpiece to be welded, clean and treat the welding surface to ensure that it is clean and smooth, and remove grease and oxides to improve welding quality and reliability. Select appropriate filler materials and welding wires that are similar or compatible with the workpiece material according to the material and requirements of the welding workpiece; Step 2: Welding preparation: Load the welding wire into the wire filling system and control the welding head to automatically align it with the welding area; Step 3: Laser beam focusing: At the beginning of the welding process, the laser welding machine focuses the laser beam to the welding area. By precisely adjusting the focal length and focal position of the laser beam, it ensures that the laser can accurately irradiate the position of the welding joint and form a high-energy-density heat source in the welding area. Step 4: Wire feeding: At the same time, the wire is fed to the welding area through the wire filling system. The wire filling system controls the feeding speed and position of the wire to ensure that the wire contacts and melts the workpiece surface at the appropriate time and position. During the entire welding process, the welding speed needs to be precisely controlled to ensure the welding quality and the formation of the weld. Too fast a welding speed may result in an inadequate weld, while too slow a welding speed may cause overheating and deformation of the welding area. The welding speed should be adjusted to achieve the best welding effect. Step 5: Molten pool formation: When the laser beam and welding wire act on the welding area at the same time, the welding wire and the workpiece surface melt at the same time to form a molten pool. The molten pool is a local melting area generated by a high-temperature heat source, in which the material of the welding wire and the workpiece surface material mix and melt to form a liquid metal pool; Step 6: Welding wire filling: The welding wire in the molten pool is gradually delivered and filled into the weld to complete the welding process. The speed and amount of the filling wire need to be precisely controlled according to the size and requirements of the weld to ensure that the weld is fully filled and of good quality. Step 7: Welding completion and quality inspection: After welding is completed, stop the laser welding and wire filling system, perform a visual inspection of the weld joint to ensure that the weld is uniform and has no obvious defects, use X-rays and ultrasonic waves to check the weld quality, measure the weld size and shape to ensure that it meets the design requirements, perform post-welding processing, remove welding residues, and polish the surface to improve welding quality and aesthetics.
3. A wire-filling welding method for a laser wire-filling welding device according to claim 2, characterized in that: In step 2, the first motor (3) is first turned on. When the first motor (3) starts to run, it drives the first connecting shell (2) to rotate. When the first connecting shell (2) starts to rotate, its lower surface rotates on the upper surface of the base (1) to adjust the left and right welding angles of the welding body (9). When the left and right welding angles are adjusted, the second motor (4) is turned on. When the second motor (4) starts to run, it drives the first arm (5) at its output end to rotate. When the first arm (5) is driven by the second motor (4) to rotate, its outer wall rotates on the outer wall of the first connecting shell (2). When the first arm (5) is rotated, When rotating, the welding body (9) is driven to adjust its upper and lower welding angles. When the upper and lower welding angles of the welding body (9) are adjusted, the third motor (7) is turned on. When the third motor (7) starts to run, it drives the second connecting shell (6) to rotate. When the outer wall of the second connecting shell (6) rotates on the outer wall of the first arm (5), it drives the second arm (8) of its outer wall to rotate. When the second arm (8) is driven by the second connecting shell (6) to rotate, it drives the welding body (9) on its inner wall to adjust its height up and down. The automatic adjustment of the angle and height can achieve the effect of aligning the welding head with the welding area.
4. The wire-filling welding method of a laser wire-filling welding device according to claim 2, characterized in that: In step three, the wire preheating temperature is adjusted to between 150-300°C to ensure smooth wire feeding and reduce gas impurities. The laser power is usually set between 500 watts and 2000 watts for medium-thick metal workpieces.
5. The filler wire welding method of the laser filler wire welding device according to claim 2, characterized in that: In step three, the laser beam diameter is set between 0.2 mm and 0.5 mm for finer welding diameters, the focal length is set between 100-200 mm to ensure that the laser welding head maintains an appropriate distance from the welding area, and the scanning speed is adjusted between 0.1-1 m / s.
6. The wire-filling welding method of a laser wire-filling welding device according to claim 2, characterized in that: In step 4, the filling speed is set between 5 mm / s and 20 mm / s for medium diameter welding wire.
7. The wire-filling welding method of a laser wire-filling welding device according to claim 2, characterized in that: In step 4, the welding speed is set between 10 mm / s and 30 mm / s for medium-thick metal workpieces.