Handheld laser welding device

Abstract

The utility model relates to the technical field of laser welding, in particular to a handheld laser welding device which comprises a welding gun, rolling wheels are arranged on the two opposite sides of the welding gun, during welding, the rolling wheels on the two sides of the welding gun roll on two plates correspondingly, and telescopic structures are directly arranged between the welding gun and the rolling wheels. And the telescopic structure can adjust the distance between the welding gun and the roller, and the effect of improving the welding quality is achieved.

Description

Technical Field

[0001] This application relates to the field of laser welding technology, and in particular to a handheld laser welding device. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that utilizes a high-energy-density laser beam as a heat source, and its application in laser material processing is crucial. In practical applications, it is primarily used for welding thin-walled materials. The welding process is heat conduction-based, meaning the laser radiation heats the workpiece surface, and the surface heat diffuses inward through heat conduction. By controlling parameters such as the laser pulse width, energy, peak power, and repetition frequency, the workpiece melts, forming a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts.

[0003] The existing technical solutions mentioned above have the following drawbacks: when welding plates, the weld seam usually needs to be welded into a straight line. However, when operators are welding, fatigue or technical problems may lead to poor welding results and affect the welding quality. Utility Model Content

[0004] This application provides a handheld laser welding device to improve welding quality.

[0005] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0006] A handheld laser welding device includes a welding gun with rollers on opposite sides. During welding, the rollers on both sides of the welding gun roll on two plates respectively. A telescopic structure is provided between the welding gun and the rollers, which can adjust the distance between the welding gun and the rollers.

[0007] By adopting the above solution, the roller presses on the plate during welding to fix it and prevent it from moving during the welding process. The roller also bears part of the weight of the welding gun, reducing the burden on the operator and decreasing the probability of operator fatigue leading to operational errors during long welding sessions. This makes it easier for the operator to operate the welding gun. In addition, the roller makes it easier for the operator to form a straight weld, resulting in better welding quality.

[0008] Optionally, the roller includes a central shaft, which is rotatably connected to a telescopic structure. The circumferential surface of the central shaft is provided with connecting rods arranged in a circular array, and a friction block is connected to the end of the connecting rod away from the central shaft. During welding, the friction block contacts the surface of the plate.

[0009] By adopting the above solution, compared with ordinary rollers, friction blocks can increase the contact area between the roller and the plate, making the roller roll more stably on the plate. Moreover, friction blocks are less likely to deviate during rolling, making it easier for operators to weld in a straight line.

[0010] Optionally, the friction block includes a connecting block connected to the connecting rod and a rubber pad for increasing the connection between the friction block and the plate.

[0011] By adopting the above scheme, rubber pads are added to increase the surface roughness of the friction block, thereby further increasing the friction between the friction block and the plate.

[0012] Optionally, the connection between the connecting rod and the friction block is a ball joint.

[0013] By adopting the above solution, the friction block can fit the plate more closely. In addition, when the included angle between the two plates to be welded is not 180 degrees, the friction block can still fit the plate, thereby limiting the plate.

[0014] Optionally, the telescopic structure includes an inner rod and an outer rod. One end of the outer rod has a groove, and the inner rod is inserted into the groove. The inner rod and the outer rod are slidably connected. A knob is rotatably connected to the end of the outer rod away from the groove. A threaded rod is fixedly connected to the knob. The threaded rod passes through the outer rod and into the groove, and is rotatably connected to the outer rod. A threaded hole is provided at the end of the inner rod that is inserted into the groove. The threaded rod is inserted into the threaded hole. The outer rod is connected to the welding gun, and the inner rod is connected to the roller.

[0015] By adopting the above solution, the operator can rotate the knob to drive the threaded rod to rotate, thereby causing the inner rod to slide in the groove, thus realizing the extension and retraction of the telescopic rod.

[0016] Optionally, the welding gun is equipped with a slide rail, a slider is slidably connected to the slide rail, and the outer rod is fixedly connected to the slider.

[0017] By adopting the above solution, the rollers can be easily installed and removed, making it easier to use the welding gun when welding plates.

[0018] Optionally, the slide rail is provided with a pin groove, and a locking pin and a pin spring are provided in the pin groove. One end of the pin spring is fixedly connected to the pin groove, and the other end of the pin spring is fixedly connected to one end of the locking pin. One end of the locking pin is inserted into the slide rail, and the end of the locking pin inserted into the slide rail is inclined, with the inclined surface facing the entrance of the slide rail.

[0019] By adopting the above scheme, when the slider slides into the slide rail, the slider contacts one end of the inclined surface of the locking pin and presses the locking pin into the pin groove until the slider is completely inside the slide rail. The pin spring rebounds and drives the locking pin back to the slide rail, thereby locking the slider in the slide rail and preventing the slider from sliding out of the groove.

[0020] Optionally, the slider is rotatably connected to a rotating shaft, which passes through the slider, and both ends of the rotating shaft are fixedly connected to two outer rods respectively.

[0021] By adopting the above solution, it becomes more convenient for operators to perform welding.

[0022] In summary, this application has the following technical effects:

[0023] 1. The addition of rollers allows operators to weld straight lines more smoothly when welding sheet metal, and makes the welding process easier for them.

[0024] 2. Rubber pads were added to increase the friction between the rollers and the sheet metal;

[0025] 3. By incorporating slide rails and sliders, the rollers can be disassembled and installed more easily. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application;

[0027] Figure 2 This is a partial structural diagram intended to emphasize the roller in this application;

[0028] Figure 3 This is a cross-sectional view intended to emphasize the internal structure of the telescopic structure in this application;

[0029] Figure 4 This application is intended to emphasize a portion of the structural diagram at the slide rail;

[0030] Figure 5 This application is intended to emphasize the partial structural cross-sectional view of the card pin.

[0031] In the diagram, 1. Welding gun; 2. Roller; 21. Central shaft; 22. Connecting rod; 23. Friction block; 231. Connecting block; 232. Rubber pad; 3. Telescopic structure; 31. Inner rod; 311. Threaded hole; 32. Outer rod; 321. Slide groove; 322. Knob; 323. Threaded rod; 4. Slide rail; 41. Pin groove; 42. Locking pin; 43. Pin spring; 44. Unlocking hole; 45. Unlocking rod; 5. Slider; 51. Rotating shaft. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 1A handheld laser welding device includes a welding gun 1 with rollers 2 on opposite sides. During welding, the rollers 2 on both sides of the welding gun 1 roll on two different plates. A telescopic structure 3 is directly connected between the welding gun 1 and the rollers 2, allowing adjustment of the distance between them. During welding, the rollers 2 press against the plates, fixing them in place and preventing movement. The rollers 2 also bear some of the weight of the welding gun 1, reducing the operator's workload and minimizing fatigue during prolonged welding, thus making operation of the welding gun 1 smoother. Furthermore, the rollers 2 make it easier for the operator to create a straight weld, resulting in better weld quality.

[0034] Reference Figure 1 and Figure 2 The roller 2 includes a central shaft 21, which is rotatably connected to the telescopic structure 3. Connecting rods 22 are arranged in a circular array on the circumferential surface of the central shaft 21, and a friction block 23 is connected to the end of each connecting rod 22 facing away from the central shaft 21. During welding, the friction block 23 contacts the surface of the plate. The friction block 23 includes a connecting block 231 connected to the connecting rod 22 and a rubber pad 232 for increasing the connection between the friction block 23 and the plate. The connection between the connecting rod 22 and the friction block 23 is a ball joint. Compared to a regular roller 2, the friction block 23 increases the contact area between the roller 2 and the plate, making the roller 2 roll more stably on the plate. Furthermore, the friction block 23 is less prone to deviation during rolling, making it easier for operators to weld in a straight line. The rubber pad 232 increases the surface roughness of the friction block 23, thereby further increasing the friction between the friction block 23 and the plate. In addition, when the included angle between the two plates to be welded is not 180 degrees, the connecting block 231 rotates around the ball hinge so that the friction block 23 can also fit against the plate, thereby limiting the plate.

[0035] Reference Figure 3 The telescopic structure 3 includes an inner rod 31 and an outer rod 32. One end of the outer rod 32 has a groove 321 into which the inner rod 31 is inserted, and the inner rod 31 and outer rod 32 are slidably connected. A knob 322 is rotatably connected to the end of the outer rod 32 facing away from the groove 321. A threaded rod 323 is fixedly connected to the knob 322. The threaded rod 323 is inserted into the outer rod 32 and into the groove 321, and is rotatably connected to the outer rod 32. A threaded hole 311 is provided at the end of the inner rod 31 that is inserted into the groove 321, and the threaded rod 323 is inserted into the threaded hole 311. The outer rod 32 is connected to the welding gun 1, and the inner rod 31 is connected to the roller 2. The operator can rotate the knob 322 to rotate the threaded rod 323, thereby causing the inner rod 31 to slide within the groove 321, thus achieving the extension and retraction of the telescopic rod.

[0036] Reference Figure 4 and Figure 5 The welding gun 1 is equipped with a slide rail 4, and a slider 5 is slidably connected to the slide rail 4. A rotating shaft 51 is rotatably connected to the slider 5, passing through the slider 5. Both ends of the rotating shaft 51 are fixedly connected to two outer rods 32, which are also fixedly connected to the slider 5. A pin groove 41 is formed inside the slide rail 4, containing a locking pin 42 and a pin spring 43. One end of the pin spring 43 is fixedly connected to the pin groove 41, and the other end is fixedly connected to one end of the locking pin 42. One end of the locking pin 42 is inserted into the slide rail 4, and the inserted end of the locking pin 42 is inclined, with the inclined surface facing the entrance of the slide rail 4. An unlocking hole 44 is formed on the side of the pin groove 41, and an unlocking rod 45 is slidably connected to the unlocking hole 44. One end of the unlocking rod 45 is connected to the locking pin 42. When slider 5 slides into slide rail 4, slider 5 contacts one end of the inclined surface of locking pin 42, pressing locking pin 42 into pin groove 41 until slider 5 is fully inside slide rail 4. Then, pin spring 43 rebounds, causing locking pin 42 to spring back into slide rail 4, thus locking slider 5 inside slide rail 4 and preventing slider 5 from sliding out of slide groove 321. When slider 5 needs to be removed, simply move unlocking lever 45 to allow locking pin 42 to slide into pin groove 41, and slider 5 can be slid out.

[0037] The specific implementation principle of this application is as follows: When welding plates are required, the two plates are aligned, the welding gun is aimed at the weld seam, and the two rollers 2 are pressed on the two plates respectively. During the welding process, the rollers 2 roll along the plates, thereby restricting the rolling of the plates and preventing the plates from moving during the welding process. The rollers 2 also share the weight of the welding gun, making the welding easier for the operator. The rollers 2 enable the operator to weld straight lines more smoothly.

[0038] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A handheld laser welding device, characterized in that: The welding gun (1) is provided with rollers (2) on opposite sides. During welding, the rollers (2) on both sides of the welding gun (1) roll on two plates respectively. A telescopic structure (3) is provided between the welding gun (1) and the rollers (2). The telescopic structure (3) can adjust the distance between the welding gun (1) and the rollers (2).

2. The handheld laser welding device according to claim 1, characterized in that: The roller (2) includes a central shaft (21), which is rotatably connected to the telescopic structure (3). The circumferential surface of the central shaft (21) is provided with connecting rods (22) arranged in a circular array, and a friction block (23) is connected to one end of the connecting rod (22) away from the central shaft (21). During welding, the friction block (23) contacts the surface of the plate.

3. The handheld laser welding device according to claim 2, characterized in that: The friction block (23) includes a connecting block (231) connected to the connecting rod (22) and a rubber pad (232) for increasing the connection between the friction block (23) and the plate.

4. A handheld laser welding device according to claim 2, characterized in that: The connection between the connecting rod (22) and the friction block (23) is a ball joint.

5. A handheld laser welding device according to claim 1, characterized in that: The telescopic structure (3) includes an inner rod (31) and an outer rod (32). One end of the outer rod (32) is provided with a groove (321). The inner rod (31) is inserted into the groove (321), and the inner rod (31) and the outer rod (32) are slidably connected. A knob (322) is rotatably connected to the end of the outer rod (32) away from the groove (321). The knob (322) is fixedly connected to a threaded rod (323). The threaded rod (323) passes through the outer rod (32) and into the groove (321), and the threaded rod (323) is rotatably connected to the outer rod (32). A threaded hole (311) is provided at the end of the inner rod (31) that is inserted into the groove (321). The threaded rod (323) is inserted into the threaded hole (311). The outer rod (32) is connected to the welding gun (1), and the inner rod (31) is connected to the roller (2).

6. A handheld laser welding device according to claim 5, characterized in that: The welding gun (1) is equipped with a slide rail (4), and a slider (5) is slidably connected to the slide rail (4). The outer rod (32) is fixedly connected to the slider (5).

7. A handheld laser welding device according to claim 6, characterized in that: The slide rail (4) has a pin groove (41) inside, and a locking pin (42) and a pin spring (43) are provided in the pin groove (41). One end of the pin spring (43) is fixedly connected in the pin groove (41), and the other end of the pin spring (43) is fixedly connected to one end of the locking pin (42). One end of the locking pin (42) is inserted into the slide rail (4), and the end of the locking pin (42) inserted into the slide rail (4) is inclined, with the inclined surface facing the entrance of the slide rail (4).

8. A handheld laser welding device according to claim 6, characterized in that: The slider (5) is rotatably connected to a rotating shaft (51), which passes through the slider (5) and is fixedly connected to two outer rods (32) at both ends.

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