Single-bar laser homogenizing device

Abstract

The utility model relates to the technical field of laser welding, in particular to a single-bar laser homogenizing device which comprises a fixed base and an irradiation device. The fixed base comprises a bottom plate, a dust cover and a supporting plate, the bottom plate is fixed to the corresponding position, the dust cover is fixedly connected with the bottom plate, the supporting plate is located in an inner cavity of the dust cover, and the dust cover is provided with a through groove; the multiple irradiation devices are installed on the supporting plate and are sequentially arranged in the length direction of the through groove. The irradiation device comprises a laser source, a fast axis lens and a slow axis lens, the laser source is fixedly connected with the supporting plate, the fast axis lens and the slow axis lens can be alternately arranged, and the laser source, the fast axis lens and / or the slow axis lens and the through groove are sequentially arranged. The laser welding device has the effects that laser can be better homogenized, and then welding operation can be better carried out.

Description

Technical Field

[0001] This application relates to the technical field of laser welding, and in particular to a single-bar laser homogenization device. Background Technology

[0002] Laser welding is widely used in light industry, chemical industry, food industry and other industries. Laser welding has many advantages. It has high energy density, small heat-affected zone, wide applicability, and can quickly heat and cool materials, thereby improving welding speed and efficiency. Laser welding has good weld morphology, stable dimensions, few defects, high weld strength and good comprehensive performance.

[0003] In related technologies, laser welding mainly uses DOE lenses to process the laser. Most lasers on the market use DOE lenses to achieve this. The collimated light source is diffused through the DOE lens and then focused by a focusing lens to achieve a linear light source, thereby making the laser more uniform and enabling subsequent welding operations.

[0004] Regarding the aforementioned technologies, due to limitations in lens specifications, the uniformity and spot length of lasers are generally restricted. The homogenization results obtained in this way are often not ideal, and the length is relatively limited, which in turn affects the welding effect. Utility Model Content

[0005] In order to better homogenize the laser and thus improve the welding operation, this application provides a single-bar laser homogenization device.

[0006] This application provides a single-bar laser homogenization device, which adopts the following technical solution:

[0007] A single-bar laser homogenization device, including a fixed base and an irradiation device;

[0008] The fixed base includes a base plate, a dust cover, and a support plate. The base plate is fixed in a corresponding position, the dust cover is fixedly connected to the base plate, the support plate is located in the inner cavity of the dust cover, and the dust cover is provided with a through groove.

[0009] The irradiation device is provided in multiple ways, and the multiple irradiation devices are installed on the support plate and arranged sequentially along the length direction of the through groove.

[0010] The irradiation device includes a laser source, a fast-axis lens, and a slow-axis lens. The laser source is fixedly connected to the support plate. The fast-axis lens and the slow-axis lens can be alternately arranged, and the laser source, the fast-axis lens, and / or the slow-axis lens and the through slot are arranged in sequence.

[0011] By adopting the above technical solution, the base plate provides support for the installation of the dust cover, the dust cover provides support for the installation of the support plate, and at the same time provides dust protection for the irradiation device. The support plate provides installation support for the irradiation device. The laser source acts as the source of light, and the laser is diffused or focused by fast-axis and slow-axis lenses. Multiple laser sources are integrated to make the final laser uniform and obtain a uniform linear spot, resulting in better welding effect.

[0012] Optionally, each of the irradiation devices is provided with an adjustment groove on the top wall of the support plate. The length direction of the adjustment groove is parallel to the irradiation direction of the laser, and the length direction of the adjustment groove is parallel to the irradiation direction of the laser source. Each fast-axis lens and / or slow-axis lens is equipped with a mounting device. The mounting device includes a mounting block. The fast-axis lens and / or slow-axis lens are mounted on the mounting block, and the mounting block can slide along the adjustment groove.

[0013] By adopting the above technical solution, the mounting block provides support for the installation of the fast-axis lens and the slow-axis lens. At the same time, the adjustment groove at the support plate limits the sliding direction of the mounting block, thereby enabling the adjustment of the position of the fast-axis lens and the slow-axis lens, thus obtaining a more uniform light spot and a better welding effect.

[0014] Optionally, the support plate has a placement groove at the end of the adjustment groove, and the inner cavity of the placement groove is provided with a sealing block, which is detachably connected to the support plate;

[0015] The mounting block can enter the inner cavity of the adjustment groove through the placement groove.

[0016] By adopting the above technical solution, the placement groove is designed to facilitate the operator in placing the installation block into the adjustment groove and allowing it to slide along the groove. The sealing block can block the placement groove, thereby preventing the installation block from sliding out of the adjustment groove.

[0017] Optionally, the mounting block has a vertical groove and a horizontal groove. The horizontal groove is located at the bottom of the vertical groove and the vertical groove and the horizontal groove are connected. The inner cavity of the vertical groove is provided with a wedge-shaped block. The wedge-shaped block slides back and forth along the vertical groove. Both ends of the horizontal groove are provided with positioning rods. The positioning rods pass through the horizontal groove and slide back and forth along the horizontal groove. One end of the positioning rod abuts against the wedge-shaped block, and the other end abuts against the side wall of the adjusting groove.

[0018] By adopting the above technical solution, the vertical groove provides support for the installation and sliding of the abutment block. The abutment block slides downward along the vertical groove, and the opposite end of the positioning rod abuts against the side wall of the wedge-shaped block. When the abutment block slides vertically, it drives the positioning rod to slide along the horizontal groove. The wedge-shaped block is an isosceles triangular block. When the operator presses down on the wedge-shaped block, the positioning rod slides towards each other, separating from the side wall of the adjustment groove, making it easier for the operator to adjust the position of the installation block. When the appropriate position is reached, the operator releases the wedge-shaped block, which then slides upward and moves the positioning rod away from each other, thereby fixing the installation block in the corresponding position of the adjustment groove.

[0019] Optionally, the top wall of the mounting block is provided with a lifting groove, the inner cavity of the lifting groove is provided with a fixing frame, the fixing frame slides along the lifting groove, and the inner cavity of the fixing frame is evenly distributed with multiple Y-shaped support frames, the support frames are fixedly connected to the fixing frame, and each end of the support frame is provided with a telescopic rod and a positioning wheel, one end of the telescopic rod is rotatably connected to the fixing frame, and the other end is rotatably connected to the positioning wheel.

[0020] By adopting the above technical solution, the lifting groove can provide support for the installation and sliding of the fixed frame. The fixed frame has multiple support frames inside, which provide support for the installation of the positioning wheel. The telescopic rod can adjust the distance between the positioning wheel and the support frame. The telescopic rod and the support frame are rotatably connected, thereby enabling fast-axis lenses and slow-axis lenses of different thicknesses to be installed on the support frame.

[0021] Optionally, the mounting device includes a lifting assembly, which includes an adjusting bolt and a wedge block. The adjusting bolt is threadedly connected to the mounting block, and the adjusting bolt is rotatably connected to the wedge block. The wedge block abuts against the bottom wall of the fixing frame.

[0022] By adopting the above technical solution, in the lifting assembly, the wedge block abuts against the fixed frame, and the adjusting bolt and the mounting block are threadedly connected, so that when the operator rotates the adjusting bolt, the wedge block slides horizontally and abuts against the bottom of the fixed frame, thereby driving the fixed frame to slide vertically.

[0023] Optionally, the wedge block is a right-angled triangular block, with one right-angled side abutting against the bottom wall of the lifting groove, and the other right-angled side threadedly connected to the adjusting bolt.

[0024] By adopting the above technical solution, the inclined side of the wedge block abuts against the bottom wall of the fixed frame, thereby driving the fixed frame to slide in the vertical direction, which in turn drives the fast-axis lens and the slow-axis lens to slide in the vertical direction, making it convenient to adjust the height of the lens.

[0025] Optionally, the surface of the positioning wheel is made of an elastic material.

[0026] By adopting the above technical solution, the surface of the positioning wheel is made of elastic material, which ensures that the surface of the elastic wheel will not damage the surfaces of the fast-axis lens and the slow-axis lens.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By setting up an irradiation device, the laser emitted by the laser source is integrated through fast-axis and slow-axis lenses to obtain a homogenized laser, which enables better welding operations;

[0029] 2. By setting adjustment slots, the positions of the fast-axis lens and the slow-axis lens can be easily adjusted, thereby enabling better homogenization of the laser.

[0030] 3. By setting up an installation device, it is easy to install the fast-axis lens and the slow-axis lens on the top wall of the mounting block. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the irradiation device.

[0033] Figure 3 This is a first-view cross-sectional view of the mounting block;

[0034] Figure 4 This is a schematic diagram of the second-view cross-section of the mounting block.

[0035] Reference numerals: 1. Fixed base; 11. Base plate; 12. Dust cover; 13. Positioning bolt; 14. Through groove; 15. Support plate; 16. Adjustment groove; 17. Placement groove; 18. Sealing block; 2. Irradiation device; 21. Laser source; 22. Fast axis lens; 23. Slow axis lens; 3. Installation device; 31. Installation block; 311. Vertical groove; 312. Horizontal groove; 313. Lifting groove; 32. Positioning assembly; 321. Abutment rod; 322. Abutment block; 323. Elastic element; 324. Spring; 325. Limiting block; 326. Positioning rod; 33. Lifting assembly; 331. Adjustment bolt; 332. Wedge block; 333. Fixed frame; 34. Limiting assembly; 341. Support frame; 342. Telescopic rod; 343. Positioning wheel. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0037] This application discloses a single-bar laser homogenization device.

[0038] Reference Figure 1 As shown in Figure 2, the single-bar laser homogenization device includes a fixed base 1, an irradiation device 2, and an installation device 3.

[0039] Reference Figure 1 The fixed base 1 includes a base plate 11 and a dust cover 12. In this embodiment, the base plate 11 is preferably a rectangular plate and is horizontally arranged. Multiple positioning holes are vertically penetrating both ends of the top wall of the base plate 11 along its length. The line connecting the positioning holes on the same side is perpendicular to the length of the base plate 11. Positioning bolts 13 are provided inside the positioning holes and are fixedly connected to the worktable. In this embodiment, the dust cover 12 is preferably a downward-opening central control cover, and is fixedly connected to the base plate 11 by screws.

[0040] Reference Figure 1 The side wall of the dust cover 12 has a through hole running horizontally through it. The inner cavity of the through hole is equipped with a cooling fan. The outer shell of the cooling fan is fixedly connected to the dust cover 12 by screws.

[0041] Reference Figure 1 The dust cover 12 has a horizontal through groove 14 on its side wall parallel to the length direction of the base plate 11, and the length direction of the through groove 14 is parallel to the length direction of the base plate 11.

[0042] Reference Figure 1 and Figure 2 The inner cavity of the dust cover 12 is provided with a support plate 15. The support plate 15 is horizontally arranged and located below the through groove 14. In this embodiment, the support plate 15 is preferably a rectangular plate, and the side wall of the support plate 15 is attached to the inner wall of the dust cover 12. The support plate 15 is fixedly connected to the dust cover 12 by screws.

[0043] Reference Figure 2 The irradiation device 2 is installed on the top wall of the support plate 15. In this embodiment, there are multiple sets of irradiation devices 2, and the irradiation devices 2 are arranged sequentially along the length of the support plate 15.

[0044] Reference Figure 1 and Figure 2 The irradiation device 2 includes a laser source 21, which is located at the end of the support plate 15 away from the through groove 14. The laser light generated by the laser source 21 is horizontal and perpendicular to the length direction of the through groove 14. The housing of the laser source 21 is fixedly connected to the top wall of the support plate 15 by screws.

[0045] Reference Figure 2The irradiation device 2 also includes a fast axis direction lens, which consists of two fast axis lenses 22 arranged sequentially along the irradiation direction of the laser. The fast axis lens 22 can expand the fast axis beam. In this embodiment, the divergence angle of the fast axis lens 22 is 5°.

[0046] Reference Figure 2 The irradiation device 2 also includes a slow-axis square lens, which is composed of two slow-axis lenses 23. The two slow-axis lenses 23 are arranged sequentially along the irradiation direction of the laser. In this embodiment, the slow-axis lens 23 is a cylindrical lens, and the slow-axis lens 23 can compress the laser beam. The divergence angle of the slow-axis lens 23 is approximately 32°.

[0047] Reference Figure 2 The fast-axis lens 22 and the slow-axis lens 23 can be used alternately or in series.

[0048] Reference Figure 2 Each irradiation device 2 has an adjustment groove 16 on the top wall of the support plate 15. In this embodiment, the adjustment groove 16 is preferably a T-shaped groove. The support plate 15 has a placement groove 17 at one end of each adjustment groove 16 near the through groove 14. The placement groove 17 and the inner cavity of the adjustment groove 16 are connected. The inner cavity of the placement groove 17 is provided with a sealing block 18. The sealing block 18 is detachably connected to the support plate 15 by means of screw fixing.

[0049] Reference Figure 2 and Figure 3 Each fast-axis lens 22 and slow-axis lens 23 is equipped with a mounting device 3. The mounting device 3 includes a mounting block 31, which is located in the inner cavity of the adjustment groove 16. The mounting block 31 can pass through the placement groove 17 and enter the inner cavity of the adjustment groove 16, and can slide along the inner cavity of the adjustment groove 16. The top wall of the mounting block 31 has a vertical groove 311 in the vertical direction, and the side wall of the mounting block 31 has a horizontal groove 312 in the horizontal direction. The inner cavities of the vertical groove 311 and the horizontal groove 312 are connected.

[0050] Reference Figure 2 and Figure 3 Each mounting block 31 is equipped with a positioning component 32, which includes an abutment rod 321, an abutment block 322, and an elastic element 323. The abutment rod 321, the abutment block 322, and the elastic element 323 are arranged sequentially in the vertical direction. The abutment rod 321 passes through the vertical groove 311 and slides along the vertical groove 311. In this embodiment, the abutment block 322 is preferably an isosceles triangular block, and the abutment block 322 is vertically arranged. The abutment block 322 is fixedly connected to the abutment rod 321 by welding. One end of the elastic element 323 is fixedly connected to the abutment block 322 by screws, and the other end is fixedly connected to the mounting block 31 by screws.

[0051] Reference Figure 2 and Figure 3 The positioning assembly 32 also includes two locking components, which are located at both ends of the transverse groove 312. The mounting block 31 has limiting grooves at both ends of the transverse groove 312, with the length direction of the limiting grooves parallel to the length direction of the transverse groove 312, and the transverse groove 312 and the limiting grooves communicating with each other. Each locking component includes a spring 324, a limiting block 325, and a positioning rod 326. The limiting block 325 and spring 324 are located in the limiting grooves and can slide along them. One end of the spring 324 is fixedly connected to the limiting block 325 by a screw, and the other end is fixedly connected to the mounting block 31 by a screw. The positioning rod 326 passes through the transverse groove 312 and can slide along it. The end of the positioning rod 326 abuts against the side wall of the abutment block 322, and the positioning rod 326 is fixedly connected to the limiting block 325 by welding.

[0052] Reference Figure 2 and Figure 4 A lifting assembly 33 is provided at the mounting block 31. The lifting assembly 33 includes an adjusting bolt 331 and a wedge block 332. The top wall of the mounting block 31 is provided with a lifting groove 313 in the vertical direction. The side wall of the mounting block 31 is provided with a receiving groove and a threaded hole. One end of the receiving groove is connected to the lifting groove 313, and the other end is connected to the threaded hole. In this embodiment, the wedge block 332 is a right-angled triangular block. One right-angled side is attached to the bottom wall of the receiving groove, and the other right-angled side is rotatably connected to the adjusting bolt 331 passing through the threaded hole by means of a bearing connection.

[0053] Reference Figure 2 and Figure 4 The lifting assembly 33 also includes a fixing frame 333. In this embodiment, the fixing frame 333 is preferably a U-shaped plate with the opening facing upward. A vertical rod is fixedly connected to the bottom of the fixing frame 333. The fixing frame 333 passes through the lifting groove 313, and the bottom wall of the vertical rod abuts against the side wall of the wedge block 332.

[0054] Reference Figure 2 and Figure 4 The installation device 3 also includes multiple limiting components 34, which are respectively installed in the vertical section of the inner cavity of the fixing frame 333. Each limiting component 34 includes a support frame 341. In this embodiment, the support frame 341 is preferably a V-shaped frame. The support frame 341 is fixedly connected to the fixing frame 333 by screws. Both ends of the support frame 341 are provided with telescopic rods 342 and positioning wheels 343. One end of the telescopic rod 342 is rotatably connected to the support frame 341 through a hinge seat, and the other end is rotatably connected to the positioning wheel 343 through a rotating component. In this embodiment, the surface of the positioning wheel 343 is made of a flexible material.

[0055] The implementation principle of the single-bar laser homogenization device in this application embodiment is as follows: the operator installs multiple laser sources 21 on the top wall of the support plate 15 and adjusts the distance between the laser source 21, the fast-axis lens 22 and the slow-axis lens 23 to obtain homogenized laser, thereby improving the welding effect.

[0056] When adjusting the positions of the fast-axis lens 22 and the slow-axis lens 23, the operator first presses down on the abutment block 322, causing the positioning rod 326 to slide closer together, thus placing the mounting block 31 in the appropriate position in the adjustment groove 16. Then, the abutment block 322 is released, causing the positioning rod 326 to move further apart and abut against the support plate 15, thus fixing the mounting block 31. Rotating the adjusting bolt 331 causes the wedge block 332 to slide, which in turn causes the fixing frame 333 to slide vertically. The position of the positioning wheel 343 is then adjusted using the telescopic rod 342, thus completing the installation of the fast-axis lens 22 and the slow-axis lens 23 and homogenizing the laser beam.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A single-bar laser homogenization device, characterized in that: It includes a fixed base (1) and an irradiation device (2); The fixed base (1) includes a base plate (11), a dust cover (12) and a support plate (15). The base plate (11) is fixed in a corresponding position. The dust cover (12) is fixedly connected to the base plate (11). The support plate (15) is located in the inner cavity of the dust cover (12). The dust cover (12) is provided with a through groove (14). The irradiation device (2) is provided in multiple ways, and the multiple irradiation devices (2) are installed on the support plate (15) and arranged sequentially along the length direction of the through groove (14); The irradiation device (2) includes a laser source (21), a fast-axis lens (22), and a slow-axis lens (23). The laser source (21) is fixedly connected to the support plate (15). The fast-axis lens (22) and the slow-axis lens (23) can be alternately arranged, and the laser source (21), the fast-axis lens (22), and / or the slow-axis lens (23) and the through slot (14) are arranged in sequence.

2. The single-bar laser homogenization device according to claim 1, characterized in that: Each of the irradiation devices (2) has an adjustment groove (16) on the top wall of the support plate (15). The length direction of the adjustment groove (16) is parallel to the irradiation direction of the laser, and the length direction of the adjustment groove (16) is parallel to the irradiation direction of the laser source (21). Each of the fast-axis lens (22) and / or the slow-axis lens (23) is equipped with a mounting device (3). The mounting device (3) includes a mounting block (31). The fast-axis lens (22) and / or the slow-axis lens (23) are mounted on the mounting block (31). The mounting block (31) can slide along the adjustment groove (16).

3. The single-bar laser homogenization device according to claim 2, characterized in that: The support plate (15) has a placement groove (17) at the end of the adjustment groove (16), and the inner cavity of the placement groove (17) is provided with a sealing block (18), which is detachably connected to the support plate (15). The mounting block (31) can enter the inner cavity of the adjustment groove (16) through the placement groove (17).

4. The single-bar laser homogenization device according to claim 3, characterized in that: The mounting block (31) is provided with a vertical groove (311) and a horizontal groove (312). The horizontal groove (312) is located at the bottom of the vertical groove (311), and the vertical groove (311) and the horizontal groove (312) are connected. The inner cavity of the vertical groove (311) is provided with a wedge-shaped block (332). The wedge-shaped block (332) slides back and forth along the vertical groove (311). Both ends of the horizontal groove (312) are provided with positioning rods (326). The positioning rods (326) pass through the horizontal groove (312) and slide back and forth along the horizontal groove (312). One end of the positioning rod (326) abuts against the wedge-shaped block (332), and the other end abuts against the side wall of the adjusting groove (16).

5. The single-bar laser homogenization device according to claim 4, characterized in that: The top wall of the mounting block (31) is provided with a lifting groove (313). The inner cavity of the lifting groove (313) is provided with a fixing frame (333). The fixing frame (333) slides along the lifting groove (313). The inner cavity of the fixing frame (333) is evenly distributed with multiple Y-shaped support frames (341). The support frame (341) is fixedly connected to the fixing frame (333). Each end of the support frame (341) is provided with a telescopic rod (342) and a positioning wheel (343). One end of the telescopic rod (342) is rotatably connected to the fixing frame (333), and the other end is rotatably connected to the positioning wheel (343).

6. The single-bar laser homogenization device according to claim 5, characterized in that: The mounting device (3) includes a lifting assembly (33), which includes an adjusting bolt (331) and a wedge block (332). The adjusting bolt (331) is threadedly connected to the mounting block (31), and the adjusting bolt (331) is rotatably connected to the wedge block (332). The wedge block (332) abuts against the bottom wall of the fixing frame (333).

7. The single-bar laser homogenization device according to claim 6, characterized in that: The wedge block (332) is a right-angled triangular block. One right-angled side of the wedge block (332) abuts against the bottom wall of the lifting groove (313), and the other right-angled side is threadedly connected to the adjusting bolt (331).

8. The single-bar laser homogenization device according to claim 5, characterized in that: The surface of the positioning wheel (343) is made of an elastic material.

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