Laser welding optical waveguide assembly

Abstract

The utility model belongs to the technical field of laser welding, and particularly relates to a laser welding optical waveguide assembly which comprises a seat body, an optical fiber fixing block and an optical waveguide device, the optical fiber fixing block and the optical waveguide device are arranged on the seat body, the optical fiber fixing block is configured to be an annular body, the outer wall of the annular body is evenly connected with optical fiber legs, and the inner wall of the annular body is connected with the optical waveguide device. The optical fiber leg is communicated with the optical waveguide device, and the optical waveguide device is used for being clamped on a workpiece to be welded; laser is transmitted to the optical waveguide device through the optical fiber leg, and the laser is reflected by the optical waveguide device and then irradiates a to-be-welded workpiece, so that laser welding of the to-be-welded workpiece is achieved; the laser beam transmitted by the optical fiber leg is focused through the optical waveguide device, the purpose of uniform laser transmission is achieved, the focused laser is transmitted to the surface of the workpiece to be welded, light energy is absorbed, two welding faces are mutually fused after the focused laser is in a molten state, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser welding, and in particular relates to a laser welding optical waveguide component. Background Art

[0002] Hydrogen energy has become an important solution to energy problems due to its wide source, no pollution, and high calorific value. With the development of fuel cell technology, the application of hydrogen energy in vehicles has been further expanded. Hydrogen fuel cell vehicles are considered to be the future development direction, and hydrogen energy and electric energy will dominate future vehicle energy.

[0003] As a key component for storing hydrogen, hydrogen storage bottles are usually made of pure steel, steel liner fiber winding, aluminum liner fiber winding and plastic liner fiber winding. The internal structure usually includes metal hydrogen storage, metal liner annular winding composite hydrogen storage, metal liner annular and longitudinal winding hydrogen storage, spiral winding hydrogen storage and full composite plastic liner hydrogen storage. Therefore, the material and internal structure are crucial for storing sealed hydrogen. The existing hydrogen storage bottle structure processing process is complicated and usually needs to be completed by injection molding.

[0004] Since the hydrogen storage bottle is formed by welding two half-bottle bodies, the welding positions of the hydrogen storage bottle are arranged circumferentially around the hydrogen storage bottle. In order to ensure that the welding positions can be fully welded by the laser, the laser needs to be transmitted. The existing laser transmission components cannot meet the welding requirements of the bottle structure.

[0005] Based on this, it is necessary to improve the defects in the prior art to overcome the shortcomings in practical applications. Utility Model Content

[0006] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the purposes of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the purposes of the present invention is to provide a laser welding optical waveguide component that meets one or more of the above-mentioned needs.

[0007] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a laser welding optical waveguide component, comprising a seat body, an optical fiber fixing block and an optical waveguide device arranged on the seat body, wherein the optical fiber fixing block is configured as an annular body, the outer wall of the annular body is evenly connected to the optical fiber legs, the inner wall of the annular body is connected to the optical waveguide device, the optical fiber legs are communicated with the optical waveguide device, and the optical waveguide device is used to clamp a workpiece to be welded; laser light is transmitted to the optical waveguide device through the optical fiber legs, and the laser light is irradiated to the workpiece to be welded after being reflected by the optical waveguide, so as to realize laser welding of the workpiece to be welded.

[0009] As a preferred solution, the optical waveguide comprises a first reflection block and a second reflection block arranged in parallel, and a reflection channel is configured between the first reflection block and the second reflection block.

[0010] As a preferred solution, the optical fiber fixing block penetrates and connects the optical fiber legs, and the optical fiber legs are used to transmit laser light to the reflection channel.

[0011] As a preferred solution, the inner walls of the first reflecting block and the second reflecting block are configured as reflecting surfaces, and the polishing roughness of the reflecting surfaces is Ra0.025-Ra0.05.

[0012] As a preferred solution, the distance between the first reflecting block and the second reflecting block is adjustable.

[0013] As a preferred solution, locking blocks are respectively provided on both sides of the optical waveguide, and the locking blocks are locked in cooperation with the optical fiber fixing blocks.

[0014] As a preferred solution, a certain distance is maintained between the optical fiber fixing block and the seat body in the radial direction.

[0015] As a preferred solution, the optical fiber fixing block is evenly provided with locking holes, and top screws are installed in the locking holes, and each of the top screws is respectively abutted against the corresponding optical fiber leg.

[0016] As a preferred solution, the optical waveguide and the optical fiber fixing block are configured as an integrated structure.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a laser welding optical waveguide component, which focuses the laser beam transmitted by the optical fiber leg through an optical waveguide to achieve the purpose of uniform laser transmission, transmits the focused laser to the surface of the workpiece to be welded and absorbs the light energy, and after reaching a molten state, an external holding force is used to make the two welding surfaces fuse with each other, and a weld is formed after cooling, so that laser welding is beneficial to improving the welding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of a laser welding optical waveguide assembly according to an embodiment of the utility model;

[0021] Figure 2is a top view of a laser welded optical waveguide assembly according to an embodiment of the utility model;

[0022] Figure 3 is a schematic diagram of a laser welding optical waveguide assembly from another perspective of an embodiment of the utility model;

[0023] Figure 4 yes Figure 3 CC cross-section diagram in;

[0024] Figure 5 yes Figure 3 DD cross-section diagram in;

[0025] Figure 6 yes Figure 3 EE cross-section diagram in;

[0026] Figure 7 A schematic diagram of the laser welding state of an embodiment of the utility model;

[0027] In the figure: 1 seat body, 2 optical fiber fixing block, 21 optical fiber leg, 22 locking hole, 3 optical waveguide, 31 first reflection block, 32 second reflection block, 33 locking block, 34 reflection channel, 41 first bottle body, 42 second bottle body. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0029] In the description of the embodiments of the present application, the terms "upper", "lower", "front", "rear", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", etc. are only used to distinguish in the description and have no special meaning.

[0030] According to some embodiments of the present application, Figures 1 to 7As shown, a laser welding optical waveguide assembly is provided, comprising a seat body 1 and an optical fiber fixing block 2 and an optical waveguide 3 arranged on the seat body 1, wherein the optical fiber fixing block 2 is configured as an annular body, the outer wall of the annular body is evenly connected to the optical fiber legs 21, the inner wall of the annular body is connected to the optical waveguide 3, the optical fiber legs 21 are connected to the optical waveguide 3, and the optical waveguide 3 is used to clamp the workpiece to be welded; the laser is transmitted to the optical waveguide 3 through the optical fiber legs 21, and the laser is irradiated to the workpiece to be welded after being reflected by the optical waveguide 3, so as to realize laser welding of the workpiece to be welded.

[0031] In some embodiments of the present application, the optical waveguide 3 includes a first reflection block 31 and a second reflection block 32 arranged in parallel, and a reflection channel 34 is configured between the first reflection block 31 and the second reflection block 32. The first reflection block 31 and the second reflection block 32 are both annular bodies, and the outer circumference of the annular body is sequentially arranged to pass through several optical fiber legs 21. The optical fiber legs 21 are used to transmit laser to the reflection channel 34, and the laser is transmitted to the welding position of the workpiece to be welded through the reflection channel 34, thereby realizing laser welding of the welding position.

[0032] Furthermore, the inner walls of the first reflector block 31 and the second reflector block 2 are configured as reflective surfaces, and the roughness of the reflective surfaces is Ra0.025 to Ra0.05. The reflective surfaces of the first reflector block 31 and the second reflector block 32 are polished during processing, which helps to improve the reflection accuracy of the laser, ensure the laser transmission efficiency during the laser welding process, and avoid energy loss.

[0033] Furthermore, the distance between the first reflecting block 31 and the second reflecting block 32 is adjustable, and the distance between the first reflecting block 31 and the second reflecting block 32 is adjusted to adapt to welds of different widths of the workpieces to be welded.

[0034] In some embodiments of the present application, locking blocks 33 are respectively provided on both sides of the optical waveguide 3, and the locking blocks 33 are locked with the optical fiber fixing block 2. On the one hand, the optical waveguide can be fixed to the optical fiber fixing block, and on the other hand, it is conducive to adjustment according to the width of the reflection channel to meet the requirements of welds of different widths.

[0035] Since the optical fiber leg needs to be connected to the laser generator through the optical fiber bundle, in order to ensure smooth disassembly and assembly between the optical fiber bundle and the optical fiber leg and avoid interference, some space is reserved between the seat body 1 and the optical fiber fixing block 2 in the height direction, and a certain distance is set between the optical fiber fixing block 2 and the seat body 1 in the radial direction. The distance is greater than the length of the optical fiber leg to ensure that the optical fiber bundle can be avoided directly under the optical fiber fixing block 2, thereby ensuring laser transmission between the optical fiber bundle and the optical fiber leg.

[0036] In some embodiments of the present application, the optical fiber fixing block 2 is evenly provided with locking holes 22, and a top screw (not shown in the figure) is installed in the locking hole 22. The top screw cooperates with the locking hole thread, and each top screw is respectively abutted against the corresponding optical fiber leg 21 to lock and limit the optical fiber leg 21 to ensure that several optical fiber legs evenly arranged along the outer circumference of the optical fiber fixing block are facing the reflection channel.

[0037] Furthermore, a locking hole 22 is provided on the side wall of the optical fiber fixing block 2, and the locking hole 22 is arranged perpendicular to the optical fiber leg 21. A top screw is installed in the locking hole 22, and the top screw is connected to the optical fiber leg 21 and is used to tighten and limit the optical fiber leg 21 to facilitate the installation and removal of the optical fiber leg 21.

[0038] In some specific embodiments, the optical waveguide 3 and the optical fiber fixing block 2 are configured as an integral structure, which can be an integrally formed part or an integral part connected together by welding; in other embodiments, each part can also be configured as a part rigidly connected by a connecting structure such as bolts. The integral structural part can reduce wear and material loss on the connection surface.

[0039] like Figure 7 As shown, the laser S transmitted by the optical fiber leg 21 irradiates into the reflection channel 34, and after being continuously reflected by the first reflection block 31 and the second reflection block 32, the laser S irradiates the connection position of the first bottle body 41 and the second bottle body 42, thereby realizing laser welding.

[0040] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] The above description is only a detailed description of the preferred embodiments and principles of the present application. For ordinary technicians in this field, there will be changes in the specific implementation methods based on the ideas provided by the present application, and these changes should also be regarded as the scope of protection of the present application.

Claims

1. A laser welding optical waveguide assembly, characterized in that: The invention comprises a seat body, an optical fiber fixing block and an optical waveguide arranged on the seat body, wherein the optical fiber fixing block is configured as an annular body, the outer wall of the annular body is evenly connected to the optical fiber legs, the inner wall of the annular body is connected to the optical waveguide, the optical fiber legs are communicated with the optical waveguide, and the optical waveguide is used to clamp the workpiece to be welded; the laser is transmitted to the optical waveguide through the optical fiber legs, and the laser is irradiated to the workpiece to be welded after being reflected by the optical waveguide, so as to realize laser welding of the workpiece to be welded.

2. A laser welding optical waveguide assembly according to claim 1, characterized in that: The optical waveguide comprises a first reflecting block and a second reflecting block arranged in parallel, and a reflecting channel is configured between the first reflecting block and the second reflecting block.

3. A laser welding optical waveguide assembly according to claim 2, characterized in that: The optical fiber fixing block penetrates and connects the optical fiber legs, and the optical fiber legs are used to transmit laser to the reflection channel.

4. The laser welding optical waveguide assembly according to claim 2, characterized in that: The inner walls of the first reflecting block and the second reflecting block are configured as reflecting surfaces, and the polishing roughness of the reflecting surfaces is Ra0.025-Ra0.

05.

5. The laser welding optical waveguide assembly according to claim 2, characterized in that: The distance between the first reflecting block and the second reflecting block is adjustable.

6. The laser welding optical waveguide assembly according to claim 1, characterized in that: Locking blocks are respectively arranged on both sides of the optical waveguide, and the locking blocks are locked and matched with the optical fiber fixing blocks.

7. The laser welding optical waveguide assembly according to claim 1, characterized in that: A certain distance is maintained between the optical fiber fixing block and the seat body in the radial direction.

8. The laser welding optical waveguide assembly according to claim 1, characterized in that: The optical fiber fixing block is evenly provided with locking holes, and top screws are installed in the locking holes. Each of the top screws is respectively in contact with the corresponding optical fiber leg.

9. The laser welding optical waveguide assembly according to claim 1, characterized in that: The optical waveguide and the optical fiber fixing block are configured as an integrated structure.

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