Laser welding optical fiber follow-up mechanism and equipment

Abstract

The utility model discloses a laser welding optical fiber follow-up mechanism and equipment, the optical fiber follow-up mechanism comprises a protective cover, an optical fiber fixing plate and a follow-up assembly, the top and one side of the protective cover are open; the follow-up assembly comprises a sliding rail arranged at the top of the protective cover, a sliding block connected to the sliding rail in a sliding mode, a mounting plate fixedly connected to the sliding block and a positioning plate arranged on the mounting plate, and the top of the optical fiber fixing plate is located in the protective cover and fixedly connected to the bottom of the mounting plate; the bottom end of the optical fiber fixing plate penetrates through an opening in the side portion of the protective cover to be connected with a welding head of welding equipment, a positioning hole is formed in the positioning plate, and an optical fiber penetrates through the positioning hole and passes through the optical fiber fixing plate to be connected with the welding head; the laser welding equipment comprises a welding head and an optical fiber follow-up mechanism. In the welding process, the optical fiber stably moves along with the welding head, and therefore the situation that the optical fiber is damaged due to abrasion is avoided.

Description

Technical Field

[0001] The utility model relates to the field of laser welding equipment, in particular to a laser welding optical fiber follower mechanism and equipment. Background Art

[0002] Laser welding refers to a welding method that uses a laser beam as a heat source. During welding, the high-power density laser beam emitted by the laser is concentrated into a focused beam to bombard the surface of the workpiece, generate heat energy, and melt the workpiece. Laser welding is one of the important aspects of the application of laser material processing technology. Due to the highly concentrated energy density of laser welding, the heating and cooling speeds during welding are extremely fast, the heat-affected zone is small, the welding stress and deformation are very small, and it is non-contact processing. It does not produce external force on the weldment and is suitable for welding difficult-to-access parts; lasers can be transmitted and transformed through optical inputs, are easy to cooperate with robots, and have a high degree of automation and production efficiency; the welding process is stable, the weld surface and internal quality are good, and the performance is high. Therefore, laser welding has been rapidly promoted.

[0003] Fiber laser refers to a laser that uses rare earth-doped glass fiber as a gain medium. It has a wide range of applications. At the same time, fiber lasers have a series of advantages such as good beam quality, low cost, high conversion efficiency, multiple output wavelengths, good temperature stability, and good compatibility. Therefore, fiber lasers are widely used in the field of laser welding. However, due to the small core of the optical fiber, friction will occur between the optical fiber and the plate during the movement of the welding head, which can easily cause damage or even breakage of the optical fiber, shortening the service life of the optical fiber and causing economic losses. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a laser welding optical fiber following mechanism and equipment, in which the optical fiber moves smoothly with the welding head during the welding process, thereby avoiding damage caused by optical fiber wear.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A laser welding optical fiber follower mechanism comprises a protective cover, an optical fiber fixing plate and a follower assembly, wherein the top and one side of the protective cover are both open, and the follower assembly comprises a slide rail arranged on the top of the protective cover, a slider slidably connected to the slide rail, a mounting plate fixedly connected to the slider, and a positioning plate arranged on the mounting plate, the top of the optical fiber fixing plate is located in the protective cover and fixedly connected to the bottom of the mounting plate, the bottom end of the optical fiber fixing plate passes through the opening on the side of the protective cover to be connected to the welding head of the welding equipment, and a positioning hole is arranged on the positioning plate, and the optical fiber passes through the positioning hole and is connected to the welding head via the optical fiber fixing plate.

[0007] As a further improvement of the above technical solution, the slide rails include two slide rails, which are arranged in parallel on both sides of the top of the protective cover, and the two slide rails are fixedly connected to the mounting plate through the slider.

[0008] As a further improvement of the above technical solution, a protective plate is connected to the side wall of the mounting plate, and the protective plate is used to cover the sliding block.

[0009] As a further improvement of the above technical solution, the positioning plate includes a first positioning plate and a second positioning plate, and the first positioning plate and the second positioning plate are both provided with a semicircular opening, and the two semicircular openings form the positioning hole.

[0010] As a further improvement of the above technical solution, a clearance opening is provided on the mounting plate, and the clearance opening is located below the positioning hole and a diameter of the clearance opening is larger than a diameter of the positioning hole.

[0011] As a further improvement of the above technical solution, the optical fiber fixing plate includes an arc-shaped guide plate and a welding head connecting plate, the top end of the arc-shaped guide plate is fixedly connected to the mounting plate, the welding head connecting plate is connected to the bottom end of the arc-shaped guide plate, and the welding head connecting plate is horizontally arranged and connected to the welding head.

[0012] As a further improvement of the above technical solution, a follow-up fixing plate is provided at the top end of the arc-shaped guide plate, and the follow-up fixing plate is fixedly connected to the mounting plate.

[0013] As a further improvement of the above technical solution, both side edges of the bottom of the arc-shaped guide plate and the welding head connecting plate are provided with convex edges.

[0014] As a further improvement of the above technical solution, two accordion covers are provided at the open portion of the top of the protective cover, and the two accordion covers are located on both sides of the mounting plate and connected to the ends of the mounting plate.

[0015] The utility model also provides the following technical solutions:

[0016] A laser welding device comprises a welding head and the optical fiber follower mechanism in the above technical solution.

[0017] The beneficial effect of the utility model is that since the mounting plate is arranged on the protective cover through the slide rail slider, during the welding process, when the welding head moves, the optical fiber fixing plate and the mounting plate will move accordingly, and the optical fiber is installed on the optical fiber fixing plate, that is, the optical fiber moves smoothly with the welding head, and no friction is generated between the optical fiber and the positioning hole, thereby avoiding damage caused by wear of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the assembly of a laser welding optical fiber follower mechanism in an embodiment of the utility model;

[0020] Figure 2 This is a structural disassembly diagram of a laser welding optical fiber follower mechanism in an embodiment of the utility model;

[0021] Figure 3 It is a bottom view of a laser welding optical fiber follower mechanism in an embodiment of the utility model;

[0022] Figure 4 It is a top view of a laser welding optical fiber follower mechanism in an embodiment of the utility model;

[0023] Figure 5 yes Figure 4 Section view along AA.

[0024] Figure numerals: 1. Protective cover; 2. Optical fiber fixing plate; 21. Welding head connecting plate; 22. Arc guide plate; 23. Follow-up fixing plate; 24. Protruding edge; 3. Follow-up assembly; 31. Slide rail; 32. Slider; 33. Protective plate; 34. Mounting plate; 35. Avoidance; 36. Positioning plate; 37. Positioning hole; 38. Organ cover mounting plate; 4. Organ cover. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that according to the specific implementation situation, a better connection structure can be formed by adding or reducing connection accessories. For example, fixed connection / fixed installation can be selected according to the needs of screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods. For example, detachable connection can be selected according to the needs of screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods. The various technical features in the creation of the utility model can be combined interactively without conflicting with each other.

[0026] Reference Figure 1-Figure 5The embodiment of the utility model discloses a laser welding optical fiber follower mechanism, including a protective cover 1, an optical fiber fixing plate 2 and a follower assembly 3. The top and one side of the protective cover 1 are both open to facilitate the routing of the optical fiber. Specifically, the follower assembly 3 includes a slide rail 31, a slider 32, a mounting plate 34 and a positioning plate 36. There are two slide rails 31, and the two slide rails 31 are arranged in parallel on both sides of the top of the protective cover 1. Each slide rail 31 is slidably connected to two sliders 32. The bottom sides of the mounting plate 34 are fixedly connected to the sliders 32 on the two slide rails 31, so that the mounting plate 34 can slide smoothly and stably on the top of the protective cover 1. The top of the optical fiber fixing plate 2 is located in the protective cover 1 and is fixedly connected to the bottom of the mounting plate 34. The bottom end of the optical fiber fixing plate 2 passes through the opening on the side of the protective cover 1 to be connected to the welding head of the welding equipment. The positioning plate 36 is arranged on the mounting plate 34 and a positioning hole 37 is arranged on the positioning plate 36. An avoidance opening 35 is arranged on the mounting plate 34. The optical fiber passes through the positioning hole 37 and the avoidance opening 35 and is connected to the welding head via the optical fiber fixing plate 2. Therefore, when the welding head moves, the optical fiber fixing plate 2, the mounting plate 34 and the positioning plate 36 will move synchronously therewith, that is, the optical fiber will move smoothly with the welding head, and no friction will be generated between the optical fiber and the positioning hole 37, thereby avoiding damage caused by wear of the optical fiber and improving the service life of the optical fiber.

[0027] In this embodiment, refer to Figure 1 and Figure 2 The side wall of the mounting plate 34 is connected with an L-shaped protective plate 33, and the protective plate 33 can cover the slider 32, so as to protect the slider 32 from sliding on the slide rail 31 and ensure the smoothness of sliding between the slider 32 and the slide rail 31.

[0028] In this embodiment, refer to Figure 2 and Figure 3 The positioning plate 36 includes a first positioning plate and a second positioning plate. The first positioning plate and the second positioning plate are both provided with a semicircular opening. The two semicircular openings form the positioning hole 37. The positioning plate 36 adopts a detachable structure to facilitate the installation of the optical fiber.

[0029] Furthermore, the avoidance opening 35 is located below the positioning hole 37 and the diameter of the avoidance opening 35 is larger than the diameter of the positioning hole 37, so as to prevent the installation plate 34 from interfering with the moving path of the optical fiber and facilitate the installation of the optical fiber.

[0030] In this embodiment, refer to Figure 2-Figure 5The optical fiber fixing plate 2 includes an arc-shaped guide plate 22 and a welding head connecting plate 21. The top of the arc-shaped guide plate 22 is fixedly connected to the mounting plate 34. The welding head connecting plate 21 is connected to the bottom of the arc-shaped guide plate 22. The welding head connecting plate 21 is horizontally arranged and connected to the welding head. The optical fiber is installed along the arc-shaped guide plate 22, thereby avoiding large-angle bending of the optical fiber and preventing the optical fiber from being damaged by bending.

[0031] Furthermore, a follow-up fixing plate 23 is provided at the top of the arc-shaped guide plate 22 , and the follow-up fixing plate 23 is fixedly connected to the mounting plate 34 by screws. The follow-up fixing plate 23 is horizontally arranged to facilitate the installation of the optical fiber fixing plate 2 and the mounting plate 34 .

[0032] In this embodiment, refer to Figure 5 The arc-shaped guide plate 22 and the bottom side edges of the welding head connecting plate 21 are provided with convex edges 24, so that the bottom of the optical fiber fixing plate 2 forms a groove shape, ensuring that the optical fiber is located on the optical fiber fixing plate 2 and does not interfere with other line routings.

[0033] In this embodiment, refer to Figure 1-Figure 5 Two accordion covers 4 are provided at the opening at the top of the protective cover 1, and the two accordion covers 4 are located on both sides of the mounting plate 34. An accordion cover mounting plate 38 is provided on both sides of the mounting plate 34 close to the accordion cover 4. One end of the accordion cover 4 is connected to the accordion cover mounting plate 38 by screws, and the other end of the accordion cover 4 is connected to the protective cover 1. The opening at the top of the protective cover 1 is blocked by the accordion cover 4 to prevent debris from entering the protective cover 1.

[0034] An embodiment of the utility model also discloses a laser welding device, including a frame, a welding head and an optical fiber follower mechanism, wherein a protective cover 1 of the optical fiber follower mechanism is installed on the frame, and an optical fiber fixing plate 2 of the optical fiber follower mechanism is fixedly connected to the welding head, so that the optical fiber moves synchronously with the welding head, thereby avoiding damage caused by wear of the optical fiber.

[0035] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A laser welding optical fiber follower mechanism, characterized in that: It includes a protective cover, an optical fiber fixing plate and a follow-up component. The top and one side of the protective cover are both open. The follow-up component includes a slide rail arranged on the top of the protective cover, a slider slidably connected to the slide rail, a mounting plate fixedly connected to the slider, and a positioning plate arranged on the mounting plate. The top of the optical fiber fixing plate is located in the protective cover and fixedly connected to the bottom of the mounting plate. The bottom end of the optical fiber fixing plate passes through the opening on the side of the protective cover and is connected to the welding head of the welding equipment. A positioning hole is arranged on the positioning plate. The optical fiber passes through the positioning hole and is connected to the welding head via the optical fiber fixing plate.

2. A laser welding optical fiber follower mechanism according to claim 1, characterized in that: The slide rails include two slide rails, which are arranged in parallel on both sides of the top of the protective cover, and the two slide rails are fixedly connected to the mounting plate through the sliders.

3. A laser welding optical fiber follower mechanism according to claim 2, characterized in that: The side wall of the mounting plate is connected with a protective plate, and the protective plate is used to cover the sliding block.

4. The laser welding optical fiber follower mechanism according to claim 1, characterized in that: The positioning plate includes a first positioning plate and a second positioning plate. The first positioning plate and the second positioning plate are both provided with a semicircular opening, and the two semicircular openings form the positioning hole.

5. A laser welding optical fiber follower mechanism according to claim 4, characterized in that: The mounting plate is provided with an avoidance opening, the avoidance opening is located below the positioning hole and the diameter of the avoidance opening is greater than the diameter of the positioning hole.

6. The laser welding optical fiber follower mechanism according to claim 1, characterized in that: The optical fiber fixing plate includes an arc-shaped guide plate and a welding head connecting plate, the top end of the arc-shaped guide plate is fixedly connected to the mounting plate, the welding head connecting plate is connected to the bottom end of the arc-shaped guide plate, and the welding head connecting plate is horizontally arranged and connected to the welding head.

7. A laser welding optical fiber follower mechanism according to claim 6, characterized in that: A follow-up fixing plate is arranged at the top end of the arc-shaped guide plate, and the follow-up fixing plate is fixedly connected to the mounting plate.

8. The laser welding optical fiber follower mechanism according to claim 6, characterized in that: The edges on both sides of the bottom of the arc-shaped guide plate and the welding head connecting plate are both provided with convex edges.

9. The laser welding optical fiber follower mechanism according to claim 1, characterized in that: Two accordion covers are arranged at the open portion of the top of the protection cover. The two accordion covers are located at two sides of the mounting plate and are connected to the ends of the mounting plate.

10. A laser welding device, characterized in that: It comprises a welding head and the optical fiber following mechanism as described in any one of claims 1 to 9.

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