Laser welding light path

Abstract

The utility model discloses a light path structure, belongs to the technical field of laser welding, and particularly relates to a laser welding light path, which is mounted on an optical fiber, consists of a group of convex lenses, a group of reflectors and a plate lens, and specifically comprises a first convex lens, a second convex lens, a first reflector, a second reflector and the plate lens, the first convex lens is installed above the optical fiber and serves as a collimating lens to collimate light beams emitted by the optical fiber into parallel light beams. The first reflecting mirror is arranged above the first convex lens; the first reflecting mirror and the second reflecting mirror are arranged in opposite directions; the second convex lens is arranged on the left side of the second reflecting mirror; the two-dimensional laser welding device has the advantages that focusing light can move in a two-dimensional plane by the aid of fewer lenses and a simpler structure, the two-dimensional laser welding device is applicable to the field of laser welding, and two-dimensional track movement of focusing light spots can be realized by controlling movement of the two reflectors.

Description

Technical Field

[0001] This utility model discloses an optical path structure, belonging to the field of laser welding technology, specifically relating to a laser welding optical path. Background Technology

[0002] The optical path of laser welding involves adjusting the laser beam emitted by the laser to change the size, direction, and trajectory of the focused spot. The spot improves weld quality by stirring the molten pool, and the two-dimensional telescopic trajectory can adapt to higher weld quality requirements. Existing solutions use more than two sets of reflectors, making reflection angle adjustment cumbersome, installation difficult, and costly. Utility Model Content

[0003] Purpose of the utility model: To provide a laser welding optical path to solve the problems mentioned above.

[0004] Technical solution: A laser welding optical path, wherein the optical path is mounted on an optical fiber and consists of a set of convex lenses, a set of reflectors and a set of planar lenses, specifically including: a first convex lens, a second convex lens, a first reflector, a second reflector and a planar lens;

[0005] The first convex lens is mounted above the optical fiber and acts as a collimating lens to collimate the light beam emitted from the optical fiber into a parallel light beam.

[0006] The first reflecting mirror is positioned above the first convex lens;

[0007] The first reflector and the second reflector are arranged facing each other;

[0008] The second convex lens is located to the left of the second reflecting mirror;

[0009] The flat lens is positioned to the left of the second convex lens as a protective lens.

[0010] In a further embodiment, the parallel light beam emitted by the first convex lens illuminates the first reflector, and the incident angle of the parallel light beam at the first reflector is obtuse, reflecting the parallel light beam onto the second reflector, where the incident angle of the second reflector is acute.

[0011] In a further embodiment, the first reflector is fixed on the first galvanometer motor, and the second reflector is fixed on the second galvanometer motor. The first galvanometer motor and the second galvanometer motor respectively drive the first reflector and the second reflector to reciprocate, and the projections of the two oscillation axes on the same plane are perpendicular to each other.

[0012] In a further embodiment, the reflected light from the second mirror is focused into a high-energy-density point light after passing through the second convex lens; the planar trajectory of the focused light spot is remotely moved by the swinging of the first galvanometer motor and the second galvanometer motor.

[0013] In a further embodiment, the incident light and the outgoing light in the optical path form an obtuse angle.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] 1. The planar scanning of the focused spot is controlled by only two mirrors.

[0016] 2. The incident light and the outgoing light of the system form an obtuse angle.

[0017] 3. The simplest lens setup: one collimating lens, one focusing lens, and two reflecting mirrors.

[0018] 4. With fewer lenses and a simpler structure, focused light can move in a two-dimensional plane.

[0019] 5. Applicable to the field of laser welding, it has the function of focusing the light spot to move in a two-dimensional trajectory by controlling the movement of two reflectors. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is an isometric drawing of this utility model.

[0022] Reference numerals: 1. First convex lens; 2. First reflecting mirror; 3. Second reflecting mirror; 4. Second convex lens; 5. Planar lens; 6. First galvanometer motor; 7. Second galvanometer motor. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] A laser welding optical path includes: a first convex lens 1, a first reflector 2, a second reflector 3, a second convex lens 4, a flat lens 5, a first galvanometer motor 6, and a second galvanometer motor 7.

[0027] In one embodiment, such as Figures 1 to 2 As shown, the first convex lens 1 is above the optical fiber, and acts as a collimating lens to collimate the light beam emitted from the optical fiber into a parallel light beam.

[0028] In one embodiment, such as Figures 1 to 2 As shown, the first reflecting mirror 2 is positioned above the first convex lens 1, and the incident angle of the light beam on the first reflecting mirror 2 is obtuse. The parallel light is reflected onto the second reflecting mirror 3, and the incident angle of the second reflecting mirror 3 is acute.

[0029] In one embodiment, such as Figures 1 to 2 As shown, the second reflector 3 is arranged facing the first reflector 2.

[0030] In one embodiment, such as Figures 1 to 2 As shown, the first reflector 2 and the second reflector 3 are fixed on the first galvanometer motor 6 and the second galvanometer motor 7, respectively, and reciprocate. The projections of the two oscillation axes on the same plane are perpendicular to each other.

[0031] In one embodiment, such as Figures 1 to 2As shown, the second convex lens 4 is located to the left of the second reflecting mirror 3. The reflected light from the second reflecting mirror 3 is focused into a high-energy-density point light after passing through the second convex lens 4. The planar trajectory of the focused light spot is remotely moved by the swinging of the first galvanometer motor 6 and the second galvanometer motor 7.

[0032] In one embodiment, such as Figures 1 to 2 As shown, the flat lens 5 is positioned to the left of the second convex lens 4 as a protective lens.

[0033] In one embodiment, such as Figures 1 to 2 As shown, the incident light and the outgoing light of the optical path system form an obtuse angle.

[0034] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A laser welding optical path, characterized in that, The optical path is mounted on an optical fiber and consists of a set of convex lenses, a set of reflectors and a set of planar lenses, specifically including: a first convex lens, a second convex lens, a first reflector, a second reflector and a planar lens; The first convex lens is mounted above the optical fiber and acts as a collimating lens to collimate the light beam emitted from the optical fiber into a parallel light beam. The first reflecting mirror is positioned above the first convex lens; The first reflector and the second reflector are arranged facing each other; The second convex lens is located to the left of the second reflecting mirror; The flat lens is positioned to the left of the second convex lens as a protective lens.

2. The laser welding optical path according to claim 1, characterized in that, The parallel light beam emitted by the first convex lens illuminates the first reflector. The incident angle of the parallel light beam on the first reflector is obtuse, and the parallel light beam is reflected onto the second reflector. The incident angle of the second reflector is acute.

3. The laser welding optical path according to claim 1, characterized in that, The first reflector is fixed on the first galvanometer motor, and the second reflector is fixed on the second galvanometer motor. The first galvanometer motor and the second galvanometer motor respectively drive the first reflector and the second reflector to reciprocate, and the projections of the two oscillation axes on the same plane are perpendicular to each other.

4. The laser welding optical path according to claim 3, characterized in that, The reflected light from the second mirror is focused into a high-energy-density point light after passing through the second convex lens; the planar trajectory of the focused light spot is remotely moved by the swinging of the first galvanometer motor and the second galvanometer motor.

5. The laser welding optical path according to claim 1, characterized in that, The incident and outgoing light in the optical path form an obtuse angle.

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