Novel galvanometer laser welding tool

Abstract

The utility model discloses a novel galvanometer laser welding tool which comprises a supporting tool and a profiling light guide located and matched at the top of the supporting tool, a profiling cavity matched with the shape of the outer surface of a lampshade is formed in the bottom of the profiling light guide, and a locating groove matched with the shape of the outer contour of a shell is formed in the upper surface of the supporting tool. The edge of the lampshade is further provided with a welding rib used for being connected with the shell. Through the design of the welding tool, the process complexity of galvanometer laser welding is simplified, and accurate and efficient welding of lamps with large surface radians can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamp welding, in particular to a novel galvanometer laser welding tool. Background Art

[0002] At present, galvanometer laser welding is a commonly used welding method in the field of automotive lighting. Its working principle is to control the rapid deflection of the reflector through the swing motor in the galvanometer welding head, accurately guide the laser beam to the required welding area, so that the laser can quickly perform continuous spot welding and seam welding in different areas of the same plane (approximate plane). It has the advantages of high repetition accuracy, short response time, fast welding speed, more uniform heating of weld ribs, low stress, and less overflow.

[0003] In the prior art, the commonly used headlight welding device can refer to a four-axis galvanometer laser welding machine disclosed in CN217344004U. Although it can adjust the laser focal length of the laser galvanometer welding head by free movement in the three directions of X, Y, and Z axes, and cooperate with the R-axis rotating fixture to clamp the lamp for rotation, the welding direction of the laser galvanometer welding head is still vertically downward, so it is impossible to weld the surface of the lamp with a large curvature. Another reference can be made to a laser welding headlight system disclosed in CN110181821A. Although it can adjust the welding angle of the 3D galvanometer lens by horizontal and vertical linear modules, the frequent movement and adjustment of the 3D galvanometer lens will affect the repetitive accuracy of welding and increase the welding time. In summary, that is to say, the current solutions in the field of headlight welding cannot accurately achieve the welding of lamps with large surface curvatures, and do not have advantages in welding accuracy and work efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a novel galvanometer laser welding tool, which simplifies the process complexity of galvanometer laser welding through the design of the welding tool, and can achieve accurate and efficient welding of lamps with larger surface curvature.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A novel galvanometer laser welding tool comprises a supporting tool and a contoured light guide positioned and matched on the top of the supporting tool, wherein a contoured cavity adapted to the outer surface shape of a lampshade is provided at the bottom of the contoured light guide, a positioning groove adapted to the outer contour shape of a shell is provided on the upper surface of the supporting tool, and welding ribs for connecting to the shell are also provided on the edge of the lampshade.

[0007] Furthermore, the edge of the contoured light guide is provided with a plurality of positioning holes, and the edge of the supporting tooling is provided with a plurality of positioning posts corresponding to the positioning holes.

[0008] Furthermore, the top of the contoured light guide is flat and parallel to the bottom surface of the supporting tooling.

[0009] Furthermore, the contoured light guide and the lampshade are made of the same material, which is thermoplastic plastic.

[0010] Furthermore, the material of the contoured light guide is transparent PC or PMMA.

[0011] Furthermore, the laser-transmittable wavelength of the contoured light guide is 800nm-1100nm.

[0012] By adopting the above technical solution, the utility model has the following beneficial effects:

[0013] The utility model designs and uses a new type of galvanometer laser welding tool, specifically a contoured light guide suitable for positioning and covering the lampshade and a supporting tool suitable for positioning and placing the shell, to achieve the positioning and loading of lamps with larger surface curvatures, and through the light-transmitting materials of the contoured light guide and the lampshade, and the welding rib design between the lampshade and the shell, a conventional three-axis galvanometer laser welding machine can be used to achieve the welding of lamps with larger surface curvatures, and at the same time, there is no need to frequently change the position and welding angle of the galvanometer welding head, which simplifies the process complexity of galvanometer laser welding and improves welding accuracy and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure explosion of an embodiment of the utility model;

[0015] Figure 2 This is a schematic structural diagram of a contoured light guide according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the lampshade of an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the supporting tooling of an embodiment of the utility model;

[0018] Figure 5 This is an optical principle diagram of welding in the embodiment of the utility model;

[0019] Among them, 1. contoured light guide; 11. contoured cavity; 12. positioning hole; 2. lampshade; 21. welding rib; 3. shell; 4. supporting tooling; 41. positioning column; 42. positioning groove. DETAILED DESCRIPTION

[0020] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0021] like Figure 1-5As shown, in this embodiment, a new type of galvanometer laser welding tool is provided, which is mainly composed of a supporting tool 4 and a contour light guide 1. The supporting tool 4 is in a rectangular shape, and four positioning posts 41 are arranged on the top edge of the supporting tool 4. The contour light guide 1 is in a convex shape, and four positioning holes 12 adapted to the positioning posts 41 are opened on the edges of both sides of the contour light guide 1. The contour light guide 1 can be positioned and matched on the top of the supporting tool 4 through the insertion of the positioning holes 12 and the positioning posts 41.

[0022] The lamp product is generally composed of a lampshade 2 and a housing 3 welded together. The surface of the lampshade 2 in this embodiment is the case where the arc is relatively large. In order to position and load the lamp, a profiling cavity 11 is provided at the bottom center of the profiling light guide 1. The shape of the profiling cavity 11 completely matches the outer surface shape of the lampshade 2. A positioning groove 42 is also provided at the center of the upper surface of the supporting tool 4. The shape of the positioning groove 42 matches the outer contour shape of the housing 3. At the same time, a welding rib 21 for connecting the housing 3 is also provided at the edge of the lampshade 2. In this way, when welding, the shell 3 can be first placed on the supporting fixture 4 and limited by the positioning groove 42, and then the lampshade 2 can be placed on the top of the shell 3 for assembly, and then the contoured light guide 1 can be placed on the supporting fixture 4, and the positioning and matching can be achieved by plugging the positioning hole 12 with the positioning column 41, and the outer surface of the lampshade 2 can be tightly limited by relying on the contoured cavity 11, and finally the laser is vertically incident on the welding rib 21 above the contoured light guide 1 through the galvanometer lens. The laser passes through the contoured light guide 1 and is incident on the surface of the lampshade 2. A small part of the laser is reflected, and most of the laser is transmitted into the lampshade 2, irradiated at the welding rib 21, and irradiated on the shell 3 that is in contact with the welding rib 21 through the welding rib 21. Heat accumulates, the welding rib 21 melts, and the lampshade 2 and the shell 3 are bonded together. After the welding is completed, the contoured light guide 1 is removed, and the welded lampshade 2 and the shell 3 can be taken out.

[0023] In order to ensure the alignment of the galvanometer lens, the top of the contoured light guide 1 in this embodiment is flat and parallel to the bottom surface of the supporting fixture 4, so that it is easier to align when the laser is incident vertically, ensuring the accuracy of welding.

[0024] It is worth mentioning that in this embodiment, the material of the contoured light guide 1 and the lampshade 2 is the same and both are thermoplastic plastics, specifically transparent PC or PMMA, and the laser wavelength that can be transmitted by the contoured light guide 1 and the lampshade 2 is 800nm, which can ensure the success of laser incident welding.

[0025] Through the above design, it can be seen that this embodiment uses a new type of galvanometer laser welding tooling, specifically through a contoured light guide 1 suitable for positioning and covering the lampshade 2 and a supporting tooling 4 suitable for positioning and placing the shell 3, to achieve the positioning and loading of lamps with larger surface curvatures, and through the transparent materials of the contoured light guide 1 and the lampshade 2, and the design of the welding ribs 21 between the lampshade 2 and the shell 3, a conventional three-axis galvanometer laser welding machine can be used to achieve the welding of lamps with larger surface curvatures, and at the same time, there is no need to frequently change the position and welding angle of the galvanometer welding head, which simplifies the process complexity of the galvanometer laser welding and improves the welding accuracy and welding efficiency.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The above specific embodiments further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of galvanometer laser welding tool, characterized by: The invention comprises a supporting fixture (4) and a contoured light guide (1) positioned and matched on the top of the supporting fixture (4); the bottom of the contoured light guide (1) is provided with a contoured cavity (11) adapted to the outer surface shape of a lampshade (2); the upper surface of the supporting fixture (4) is provided with a positioning groove (42) adapted to the outer contour shape of a shell (3); and the edge of the lampshade (2) is also provided with a welding rib (21) for connecting to the shell (3).

2. The novel galvanometer laser welding tool according to claim 1 is characterized in that: The edge of the contoured light guide (1) is provided with a plurality of positioning holes (12), and the edge of the supporting tooling (4) is provided with a plurality of positioning posts (41) corresponding to the positioning holes (12).

3. The novel galvanometer laser welding tool according to claim 1 is characterized in that: The top of the contoured light guide (1) is a plane and is parallel to the bottom surface of the supporting tooling (4).

4. The novel galvanometer laser welding tool according to claim 1 is characterized in that: The contoured light guide (1) and the lampshade (2) are made of the same material, both of which are thermoplastic plastics.

5. The novel galvanometer laser welding tool according to claim 4 is characterized in that: The material of the contoured light guide (1) is transparent PC or PMMA.

6. The novel galvanometer laser welding tool according to claim 5 is characterized in that: The laser-transmittable wavelength of the contoured light guide (1) is 800nm-1100nm.

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