Fiber laser

Abstract

The utility model discloses an optical fiber laser which comprises a bearing plate, a hollow first shell, a hollow second shell, a first reflection assembly, a light emitting assembly, a second reflection assembly and a focusing assembly. The first reflection assembly comprises a first adjusting plate, a support, a driving motor, a first reflection lens and three first screws, one end of each first screw penetrates through the side wall of the first shell to be in threaded connection with the first shell, one end of each first screw is connected to the first adjusting plate, and the other end of each first screw is located outside the first shell; the support is fixed to one side of the first adjusting plate, the first screw is screwed in and out under the action of external force to adjust the posture of the first adjusting plate and the support relative to the first shell, the end, extending into the first shell, of the driving motor is fixed to the support, and the driving motor is used for driving the first reflective lens to rotate. The stability of light emitting of the optical fiber laser can be improved.

Description

Technical Field

[0001] This application relates to the field of laser technology, specifically to a fiber laser. Background Technology

[0002] In recent years, fiber lasers have been increasingly widely used in metal welding and cutting. However, in some cutting and welding applications, unsatisfactory results still exist, such as inefficient cutting and spattering during welding. Furthermore, in cutting applications, the current beam energy distribution is not ideal for thick plate cutting efficiency and processes. Experiments have shown that large-spot laser beams are needed for perforation in thick plate cutting, while small-spot laser beams with concentrated energy are required for cutting. Therefore, there is an urgent need to develop laser technology with adjustable beam energy distribution in the cutting process. Domestic and international fiber laser manufacturers have successively launched ring-spot lasers with adjustable beam modes. These lasers use a two-in-one transmission fiber, where both the fiber core and the ring core can achieve total internal reflection for laser transmission. Two light source modules are connected to the fiber core and ring core of the two-in-one transmission fiber respectively through customized optical components. By setting the output power of the two light source modules, the power of the ring spot center and the circular spot can be adjusted to achieve spatter-free welding or other applications. However, the connection between the light source and the transmission fiber in the ring-spot laser is achieved through fiber optic fusion splicing, which carries a risk of burn-out and is inconvenient for maintenance. Existing technologies have relatively low stability in regulating the output of fiber lasers. Summary of the Invention

[0003] This application provides a fiber laser that can improve the stability of adjusting the output light of the fiber laser.

[0004] In a first aspect, the fiber laser provided in this application includes: a carrier plate, a hollow first housing, a hollow second housing, a first reflecting component, a light-emitting component, a second reflecting component, and a focusing component.

[0005] The first housing and the second housing are respectively fixed to both sides of the support plate, and the first reflective component, the light-emitting component, the second reflective component and the focusing component are sequentially disposed on the side wall of the first housing;

[0006] The first reflective assembly is located inside the first housing. The first reflective assembly includes a first adjusting plate, a bracket, a drive motor, a first reflective lens, and three first screws. One end of each first screw passes through the side wall of the first housing and is threaded into it. The other end of each first screw is connected to the first adjusting plate. The three first screws are arranged in a triangular pattern on the first adjusting plate. The other end of each first screw is located outside the first housing. The bracket is fixed to one side of the first adjusting plate. When subjected to external force, the first screws are screwed in and out to adjust the attitude of the first adjusting plate and the bracket relative to the first housing.

[0007] An opening is provided on the support plate. One end of the drive motor is located inside the second housing, and the other end of the drive motor extends into the first housing through the opening. The end of the drive motor extending into the first housing is fixed to the bracket. The output shaft of the drive motor extends into the first housing and is connected to the first reflective lens. The output shaft of the drive motor is perpendicular to the support plate. The drive motor is used to drive the first reflective lens to rotate.

[0008] The light-emitting component is used to emit and collimate laser light, the second reflective component is used to reflect the light emitted and collimated by the light-emitting component to the first reflective component, the first reflective lens in the first reflective component is used to reflect the light reflected by the second reflective component to the focusing component, and the focusing component is used to focus the laser light into the optical fiber.

[0009] Optionally, the bracket includes a base plate, two side plates, and a connecting plate. The connecting plate is connected to the first adjusting plate. The base plate is parallel to the bearing plate and is connected to the bottom of the connecting plate. The two side plates are erected on the edge of the base plate, and one side of each side plate is connected to the connecting plate. The output shaft of the drive motor passes through the base plate and is connected to the first reflective lens.

[0010] Optionally, the fiber laser includes a first fixing plate located outside the first housing, and the first screw passes through the first fixing plate and the first housing in sequence to connect with the first adjusting plate.

[0011] Optionally, the fiber laser includes a third housing, a first connecting portion is provided on the first fixing plate, the third housing is detachably connected to the first connecting portion, the third housing covers the first fixing plate, and the third housing is located outside the first housing.

[0012] Optionally, the sidewall of the second housing is provided with a plurality of heat dissipation holes.

[0013] Optionally, the third housing is bolted to the first connection portion.

[0014] Optionally, the second reflective assembly includes a second adjusting plate, a second reflective lens, and three second screws. The second reflective lens is disposed on the second adjusting plate. One end of the second screw passes through the side wall of the second housing and is threadedly connected to the second housing. One end of the second screw is connected to the second adjusting plate. The three second screws are distributed in a triangle on the second adjusting plate. The other end of the second screw is located outside the second housing. When the second screw is subjected to external force, it is screwed in and out to adjust the attitude of the second adjusting plate relative to the second housing.

[0015] Optionally, the fiber laser includes a second fixing plate located outside the second housing, and the second screw passes through the second fixing plate and the second housing in sequence to connect with the second adjusting plate.

[0016] Optionally, the fiber laser includes a fourth housing, a second connecting portion is provided on the second fixing plate, the fourth housing is detachably connected to the second connecting portion, the fourth housing covers the second fixing plate, and the fourth housing is located outside the second housing.

[0017] Optionally, the second reflective lens is a circular lens.

[0018] In this application, compared to related technologies, the fiber laser includes: a carrier plate, a hollow first shell, a hollow second shell, a first reflective component, a light-emitting component, a second reflective component, and a focusing component. The first shell and the second shell are respectively fixed to both sides of the carrier plate. The first reflective component, the light-emitting component, the second reflective component, and the focusing component are sequentially disposed on the side wall of the first shell. The first reflective component is located inside the first shell and includes a first adjusting plate, a bracket, a drive motor, a first reflective lens, and three first screws. One end of each first screw passes through the side wall of the first shell and is threaded to the first shell. The other end of each first screw is connected to the first adjusting plate. The three first screws are arranged in a triangle on the first adjusting plate. The other end of each first screw is located outside the first shell. The bracket is fixed. A first screw, fixed to one side of the first adjusting plate, is screwed in and out under external force to adjust the posture of the first adjusting plate and the bracket relative to the first housing. An opening is provided on the support plate. One end of the drive motor is located inside the second housing, and the other end of the drive motor extends into the first housing through the opening. The end of the drive motor extending into the first housing is fixed to the bracket. The output shaft of the drive motor extends into the first housing and is connected to the first reflective lens. The output shaft of the drive motor is perpendicular to the support plate. The drive motor is used to drive the first reflective lens to rotate. The light-emitting component is used to emit and collimate the laser. The second reflective component is used to reflect the light emitted and collimated by the light-emitting component to the first reflective component. The first reflective lens in the first reflective component is used to reflect the light reflected by the second reflective component to the focusing component. The focusing component is used to focus the laser into the optical fiber. This application adjusts the posture of the first adjustment plate and the bracket relative to the first housing by rotating the first screw, which screws in and out when subjected to external force, thereby changing the angle of the first reflective lens and initially adjusting the angle of the laser incident on the focusing component. In addition, the first reflective lens can be rotated by a drive motor to adjust the angle of the laser incident on the focusing component a second time, which can improve the stability of adjusting the light output of the fiber laser. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of one embodiment of the fiber laser provided in this application;

[0021] Figure 2 This is a top view schematic diagram of one embodiment of the fiber laser provided in this application;

[0022] Figure 3 This is a schematic diagram of the internal structure of a fiber laser provided in this application from a first-view perspective;

[0023] Figure 4 This is a schematic diagram of the internal structure of a fiber laser provided in this application from a second perspective.

[0024] Figure 5 This is a top-view schematic diagram of the internal structure of an embodiment of the fiber laser provided in this application. Detailed Implementation

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0026] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0028] See Figure 1 The fiber laser 10 provided in this application includes: a carrier plate 115, a hollow first housing 111, a hollow second housing 112, a first reflective component 13, a light-emitting component 121, a second reflective component 14, and a focusing component 122.

[0029] The first housing 111 and the second housing 112 are respectively fixed to the two sides of the support plate 115. The first reflective component 13, the light-emitting component 121, the second reflective component 14 and the focusing component 122 are sequentially arranged on the side wall of the first housing 111.

[0030] The first reflective assembly 13 is located inside the first housing 111. The first reflective assembly 13 includes a first adjusting plate 134, a bracket 133, a drive motor 132, a first reflective lens 131, and three first screws 135. One end of the first screw 135 passes through the side wall of the first housing 111 and is threadedly connected to the first housing 111. The other end of the first screw 135 is connected to the first adjusting plate 134. The three first screws 135 are distributed in a triangle on the first adjusting plate 134. The other end of the first screw 135 is located outside the first housing 111. The bracket 133 is fixed to one side of the first adjusting plate 134. When the first screw 135 is subjected to external force, it is screwed in and out to adjust the posture of the first adjusting plate 134 and the bracket 133 relative to the first housing 111.

[0031] An opening is provided on the support plate 115. One end of the drive motor 132 is located inside the second housing 112, and the other end of the drive motor 132 extends into the first housing 111 through the opening. The end of the drive motor 132 extending into the first housing 111 is fixed to the bracket 133. The output shaft of the drive motor 132 extends into the first housing 111 and is connected to the first reflective lens 131. The output shaft of the drive motor 132 is perpendicular to the support plate 115. The drive motor 132 is used to drive the first reflective lens 131 to rotate.

[0032] The light-emitting component 121 is used to emit and collimate the laser, the second reflective component 14 is used to reflect the light emitted and collimated by the light-emitting component 121 to the first reflective component 13, the first reflective lens 131 in the first reflective component 13 is used to reflect the light reflected by the second reflective component 14 to the focusing component 122, and the focusing component 122 is used to focus the laser into the optical fiber.

[0033] In this embodiment, rotating the first screw 135 causes it to screw in and out under external force to adjust the posture of the first adjusting plate 134 and the bracket 133 relative to the first housing 111, thereby changing the angle of the first reflective lens 131 and adjusting the angle of the laser incident on the focusing assembly 122. Alternatively, a drive motor 132 can be used to drive the first reflective lens 131 to rotate, further adjusting the angle of the laser incident on the focusing assembly 122.

[0034] In this embodiment, the bracket 133 includes a base plate, two side plates, and a connecting plate. The connecting plate is connected to the first adjusting plate 134. The base plate is parallel to the bearing plate 115 and is connected to the bottom of the connecting plate. The two side plates are erected on the edge of the base plate, and one side of the side plate is connected to the connecting plate. The output shaft of the drive motor 132 passes through the base plate and is connected to the first reflective lens 131.

[0035] In this embodiment of the application, the fiber laser 10 includes a first fixing plate 151, which is located outside the first housing 111. A first screw 135 passes through the first fixing plate 151 and the first housing 111 in sequence and is connected to the first adjusting plate 134.

[0036] In this embodiment of the application, the fiber laser 10 includes a third housing 113, a first connecting portion is provided on the first fixing plate 151, the third housing 113 is detachably connected to the first connecting portion, the third housing 113 covers the first fixing plate 151, and the third housing 113 is located outside the first housing 111.

[0037] In this embodiment of the application, the sidewall of the second housing 112 is provided with a plurality of heat dissipation holes 116.

[0038] In this embodiment, the third housing 113 is bolted to the first connecting part.

[0039] In this embodiment, the second reflective assembly 14 includes a second adjusting plate 144, a second reflective lens 141, and three second screws 145. The second reflective lens 141 is disposed on the second adjusting plate 144. One end of the second screw 145 passes through the side wall of the second housing 112 and is threadedly connected to the second housing 112. The other end of the second screw 145 is connected to the second adjusting plate 144. The three second screws 145 are distributed in a triangle on the second adjusting plate 144. The other end of the second screw 145 is located outside the second housing 112. When subjected to external force, the second screws 145 are screwed in and out to adjust the attitude of the second adjusting plate 144 relative to the second housing 112.

[0040] In this embodiment of the application, the fiber laser 10 includes a second fixing plate 152, which is located outside the second housing 112. A second screw 145 passes through the second fixing plate 152 and the second housing 112 in sequence and is connected to the second adjusting plate 144.

[0041] In this embodiment of the application, the fiber laser 10 includes a fourth housing 114, a second connecting portion is provided on the second fixing plate 152, the fourth housing 114 is detachably connected to the second connecting portion, the fourth housing 114 covers the second fixing plate 152, and the fourth housing 114 is located outside the second housing 112.

[0042] In this embodiment, the second reflective lens 141 is a circular lens.

[0043] Compared to related technologies, the fiber laser of this application includes: a carrier plate, a hollow first housing, a hollow second housing, a first reflecting component, a light-emitting component, a second reflecting component, and a focusing component. The first housing and the second housing are respectively fixed to both sides of the carrier plate. The first reflecting component, the light-emitting component, the second reflecting component, and the focusing component are sequentially disposed on the side wall of the first housing. The first reflecting component is located inside the first housing and includes a first adjusting plate, a bracket, a drive motor, a first reflecting mirror, and three first screws. One end of each first screw passes through the side wall of the first housing and is threaded to the first housing. The other end of each first screw is connected to the first adjusting plate. The three first screws are arranged in a triangle on the first adjusting plate. The other end of each first screw is located outside the first housing. The bracket is fixed to the first housing. On one side of an adjustment plate, a first screw is screwed in and out under external force to adjust the posture of the first adjustment plate and the bracket relative to the first housing. An opening is provided on the support plate. One end of the drive motor is located inside the second housing, and the other end of the drive motor extends into the first housing through the opening. The end of the drive motor extending into the first housing is fixed to the bracket. The output shaft of the drive motor extends into the first housing and is connected to the first reflective lens. The output shaft of the drive motor is perpendicular to the support plate. The drive motor is used to drive the first reflective lens to rotate. The light-emitting component is used to emit and collimate the laser. The second reflective component is used to reflect the light emitted and collimated by the light-emitting component to the first reflective component. The first reflective lens in the first reflective component is used to reflect the light reflected by the second reflective component to the focusing component. The focusing component is used to focus the laser into the optical fiber. This application adjusts the posture of the first adjustment plate and the bracket relative to the first housing by rotating the first screw, which screws in and out when subjected to external force, thereby changing the angle of the first reflective lens and initially adjusting the angle of the laser incident on the focusing component. In addition, the first reflective lens can be rotated by a drive motor to adjust the angle of the laser incident on the focusing component a second time, which can improve the stability of adjusting the light output of the fiber laser.

[0044] The fiber laser provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0045] It should be noted that when the above embodiments of this application are applied to specific products or technologies, and user-related data is involved, user permission or consent is required, and the collection, use and processing of related data must comply with relevant laws, regulations and standards.

Claims

1. A fiber laser, characterized in that, The fiber laser includes: a carrier plate, a hollow first shell, a hollow second shell, a first reflective component, a light-emitting component, a second reflective component, and a focusing component. The first housing and the second housing are respectively fixed to both sides of the support plate, and the first reflective component, the light-emitting component, the second reflective component and the focusing component are sequentially disposed on the side wall of the first housing; The first reflective assembly is located inside the first housing. The first reflective assembly includes a first adjusting plate, a bracket, a drive motor, a first reflective lens, and three first screws. One end of each first screw passes through the side wall of the first housing and is threaded into it. The other end of each first screw is connected to the first adjusting plate. The three first screws are arranged in a triangular pattern on the first adjusting plate. The other end of each first screw is located outside the first housing. The bracket is fixed to one side of the first adjusting plate. When subjected to external force, the first screws are screwed in and out to adjust the attitude of the first adjusting plate and the bracket relative to the first housing. An opening is provided on the support plate. One end of the drive motor is located inside the second housing, and the other end of the drive motor extends into the first housing through the opening. The end of the drive motor extending into the first housing is fixed to the bracket. The output shaft of the drive motor extends into the first housing and is connected to the first reflective lens. The output shaft of the drive motor is perpendicular to the support plate. The drive motor is used to drive the first reflective lens to rotate. The light-emitting component is used to emit and collimate laser light, the second reflective component is used to reflect the light emitted and collimated by the light-emitting component to the first reflective component, the first reflective lens in the first reflective component is used to reflect the light reflected by the second reflective component to the focusing component, and the focusing component is used to focus the laser light into the optical fiber.

2. The fiber laser according to claim 1, characterized in that, The bracket includes a base plate, two side plates, and a connecting plate. The connecting plate is connected to the first adjusting plate. The base plate is parallel to the bearing plate and is connected to the bottom of the connecting plate. The two side plates are erected on the edge of the base plate, and one side of each side plate is connected to the connecting plate. The output shaft of the drive motor passes through the base plate and is connected to the first reflective lens.

3. The fiber laser according to claim 2, characterized in that, The fiber laser includes a first fixing plate located outside the first housing, and a first screw passing through the first fixing plate and the first housing in sequence to connect to the first adjusting plate.

4. The fiber laser according to claim 3, characterized in that, The fiber laser includes a third housing, a first connecting portion is provided on the first fixing plate, the third housing is detachably connected to the first connecting portion, the third housing covers the first fixing plate, and the third housing is located outside the first housing.

5. The fiber laser according to claim 4, characterized in that, The side wall of the second housing is provided with multiple heat dissipation holes.

6. The fiber laser according to claim 5, characterized in that, The third housing is bolted to the first connection part.

7. The fiber laser according to claim 6, characterized in that, The second reflective assembly includes a second adjusting plate, a second reflective lens, and three second screws. The second reflective lens is disposed on the second adjusting plate. One end of the second screw passes through the side wall of the second housing and is threadedly connected to the second housing. One end of the second screw is connected to the second adjusting plate. The three second screws are distributed in a triangle on the second adjusting plate. The other end of the second screw is located outside the second housing. When the second screw is subjected to external force, it is screwed in and out to adjust the attitude of the second adjusting plate relative to the second housing.

8. The fiber laser according to claim 7, characterized in that, The fiber laser includes a second fixing plate located outside the second housing, and a second screw passing through the second fixing plate and the second housing in sequence to connect to the second adjusting plate.

9. The fiber laser according to claim 8, characterized in that, The fiber laser includes a fourth housing, a second connecting portion is provided on the second fixing plate, the fourth housing is detachably connected to the second connecting portion, the fourth housing covers the second fixing plate, and the fourth housing is located outside the second housing.

10. The fiber laser according to claim 9, characterized in that, The second reflective lens is a circular lens.

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