High-power high-speed laser scanning galvanometer

Abstract

The utility model relates to the technical field of scanning galvanometers, in particular to a high-power high-speed laser scanning galvanometer which comprises a body, a support connected to the side edge of the body and a protection structure fixed on the support. The end face of the upper layer plate and the end face of the lower layer plate are provided with through holes corresponding to body field lenses. The upper layer plate and the lower layer plate are adopted, the end faces of the upper layer plate and the lower layer plate are provided with penetrating through hole structures, the vertical structural design occupies small space, installation of the body is not affected, normal laser marking operation of the field lens can be guaranteed in the actual use process, the laser marking efficiency is improved, and the production cost is reduced. In a shutdown state, the through holes in the upper-layer plate and the lower-layer plate can be shielded and protected through the shielding assembly on the inner side, and the possibility that the field lens is subjected to external impact or foreign matters enter the field lens can be avoided, so that the field lens is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of scanning galvanometers, in particular to a high-power high-speed laser scanning galvanometer. Background Art

[0002] Briefly speaking, a galvanometer is a kind of scanning galvanometer used in the laser industry. Its professional name is a high-speed scanning galvanometer. Its working principle is a system that uses several rotatable mirrors controlled by a servo motor to control the propagation direction of the light beam. The motor is controlled by a computer to achieve focusing at different positions on the surface or inside of the workpiece.

[0003] Currently, the scenario of the galvanometer protrudes outside. In the prior art, some galvanometers also adopt a protection design to protect the field lens. For example, a laser galvanometer scanning system disclosed in "CN113433687A" of the Chinese patent announcement number slides a baffle to move linearly to the left, so that the sliding baffle is closed at the bottom of the fixed frame, so as to effectively protect the lower part of the field lens.

[0004] However, the existing horizontal movement structure has a large overall occupied space, thus restricting the installation requirements of the entire galvanometer. Secondly, such a protection structure design is relatively complex, and the assembly and maintenance costs are relatively high, so the applicability is general. Content of the Utility Model

[0005] The purpose of the utility model is to solve the shortcomings in the prior art that the existing horizontal movement structure has a large overall occupied space, thus restricting the installation requirements of the entire galvanometer, etc., and to propose a high-power high-speed laser scanning galvanometer.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a high-power high-speed laser scanning galvanometer, including a body, a bracket connected to the side of the body, and a protection structure fixed on the bracket. The protection structure includes an upper layer plate and a lower layer plate arranged at intervals. Through holes corresponding to the field lens of the body are opened on the end faces of the upper layer plate and the lower layer plate;

[0008] Wherein, a shielding component is further arranged between the upper layer plate and the lower layer plate, and the shielding component is used to close the through hole.

[0009] Further, the shielding component includes a plurality of fan-shaped plates rotatably connected to the lower layer plate, and the plurality of fan-shaped plates fit together to close the through hole;

[0010] A driving ring is also rotatably connected between the upper layer plate and the lower layer plate, and a connecting rod is pin-connected between the driving ring and the middle part of the fan-shaped plate.

[0011] Further, a plurality of guide posts are fixedly connected between the upper layer plate and the lower layer plate, and a plurality of guide grooves are formed on the end surface of the driving ring, and the guide posts slide in the guide grooves.

[0012] Further, a driving assembly is further included, and the driving assembly is installed on the bracket and is used to drive the driving ring to rotate.

[0013] Further, the driving assembly includes a motor fixed on the bracket, and a gear is fixed at the shaft end of the motor. A ring gear portion is arranged on the outer side of the driving ring, and the gear meshes with the ring gear portion for transmission.

[0014] Further, the bracket includes a first arm and two second arms connected to the lower end of the first arm, and the two second arms are respectively fixed to the upper layer plate and the lower layer plate.

[0015] A high-power high-speed laser scanning galvanometer proposed by the present utility model has the beneficial effects that: in the present utility model, by adopting the upper layer plate and the lower layer plate provided, through-hole structures penetrating through the end surfaces of both are arranged, and the up-and-down structure design occupies less space and does not affect the installation of the main body. During actual use, the normal laser marking operation of the field lens can be ensured. When in the shutdown state, the through holes on the upper layer plate and the lower layer plate can be shielded and protected by the shielding assembly inside, and each other can avoid the possibility of the field lens being impacted externally or foreign objects entering, thereby effectively realizing the protection of the field lens. The overall structure design is simple, and the assembly and maintenance are relatively convenient. Description of the Drawings

[0016] Figure 1 is a three-dimensional view of the present utility model;

[0017] Figure 2 is an exploded structural schematic diagram of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the protection structure of the present utility model.

[0019] In the figure: 1, main body; 11, field lens; 2, bracket; 21, first arm; 22, second arm; 3, protection structure; 31, upper layer plate; 32, lower layer plate; 33, through hole; 34, fan-shaped plate; 35, driving ring; 36, connecting rod; 37, guide post; 38, guide groove; 4, driving assembly; 41, motor; 42, gear; 43, ring gear portion. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Reference Figures 1-3 As an embodiment of the present utility model, it discloses a high-power high-speed laser scanning galvanometer. The scanning galvanometer includes a main body 1, a bracket 2 connected to the side of the main body 1, and a protective structure 3 fixed on the bracket 2. Specifically, the protective structure 3 includes an upper plate 31 and a lower plate 32 arranged at intervals. Through holes 33 corresponding to the field lens 11 of the main body 1 are formed on the end faces of the upper plate 31 and the lower plate 32. During operation, the laser beam of the field lens 11 shoots outwards along the through holes 33. Preferably, in this embodiment, the inner diameter of the through holes 33 is not less than the inner diameter of the lens ring of the field lens 11 to avoid blocking the light beam;

[0022] Wherein, a shielding component is further arranged between the upper plate 31 and the lower plate 32, and the shielding component is used to close the through holes 33.

[0023] In some embodiments, the shielding component in the present utility model includes a plurality of sector plates 34 rotatably connected to the lower plate 32. The plurality of sector plates 34 fit together to close the through holes 33. That is, in this embodiment, when the plurality of sector plates 34 rotate outwards, the through holes 33 can be opened to ensure the normal operation of the main body 1. After the operation is completed, the plurality of sector plates 34 rotate inwards, and the plurality of sector plates 34 fit together to realize the shielding and closing of the through holes 33, so as to protect the field lens 11 from being knocked and other problems;

[0024] A driving ring 35 is also rotatably connected between the upper plate 31 and the lower plate 32, and a connecting rod 36 is pin-connected between the driving ring 35 and the middle part of the sector plate 34.

[0025] On the basis of the above embodiment, a plurality of guide posts 37 are fixedly connected between the upper plate 31 and the lower plate 32 of the present utility model. The guide posts 37 are used to form a space between the upper plate 31 and the lower plate 32. The driving ring 35 is arranged in this space. A plurality of guide grooves 38 are formed on the end face of the driving ring 35, and the guide posts 37 slide in the guide grooves 38. That is, in this embodiment, through the guiding design of the guide posts 37 and the guide grooves 38, the rotation guiding and limiting of the driving ring 35 can be realized.

[0026] In addition, in order to realize the automatic control of the driving ring 35, a driving component 4 is further included in this embodiment. The driving component 4 is installed on the bracket 2 and is used to drive the driving ring 35 to rotate.

[0027] In a preferred embodiment, the drive assembly 4 in the present utility model includes a motor 41 fixed on the bracket 2, and a gear 42 is fixed at the shaft end of the motor 41. A ring gear portion 43 is provided on the outer side of the drive ring 35, and the gear 42 meshes with the ring gear portion 43 for transmission. Preferably, the ring gear portion 43 in this embodiment can be provided as a toothed ring.

[0028] That is, during operation, by connecting the motor 41 to an external power supply, the motor 41 drives the gear 42 to rotate. Through the cooperation of the gear 42 and the ring gear portion 43, the rotation of the drive ring 35 can be driven. Thus, when the drive ring 35 rotates, it drives the connecting rod 36 to move, and the sector plate 34 is controlled to rotate by the traction of the connecting rod 36. Driven by the drive ring 35, multiple sector plates 34 can rotate synchronously to ensure the consistency of actions.

[0029] It should be noted that in the embodiment of the present utility model, the bracket 2 includes a first arm 21 and two second arms 22 connected to the lower end of the first arm 21. Preferably, the first arm 21 in this embodiment is provided as a U-shaped structure and is fixed to the outer shell of the body 1 through fasteners such as bolts. The two second arms 22 are horizontally installed on the lower layer of the first arm 21. Each second arm 22 includes two cross bars, and the two second arms 22 are respectively fixed to the upper layer plate 31 and the lower layer plate 32. By using the method of fixing the second arms 22 to the upper layer plate 31 and the lower layer plate 32, the relative driving rotation ability of the drive ring 35 can be ensured. Further, the motor 41 in this embodiment is fixed on the upper second arm 22.

[0030] In summary, in the present utility model, by adopting the upper layer plate 31 and the lower layer plate 32 with through holes 33 formed in a penetrating manner on their end faces, during actual use, the normal laser marking operation of the field lens 11 can be ensured. When in the shutdown state, the through holes 33 on the upper layer plate 31 and the lower layer plate 32 can be shielded and protected by the inner shielding assembly, thereby avoiding the possibility of the field lens 11 being impacted externally or foreign objects entering, and effectively realizing the protection of the field lens 11. The overall structural design is simple and highly practical.

[0031] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A high-power high-speed laser scanning galvanometer, comprising a main body (1), a bracket (2) connected to the side of the main body (1), and a protective structure (3) fixed on the bracket (2), characterized in that: The protection structure (3) includes an upper plate (31) and a lower plate (32) which are arranged at intervals. Through holes (33) corresponding to the field lens (11) of the body (1) are formed in the end faces of the upper plate (31) and the lower plate (32). Wherein, a shielding component is further arranged between the upper plate (31) and the lower plate (32), and the shielding component is used to close the through holes (33).

2. The high-power high-speed laser scanning galvanometer according to claim 1, wherein: The shielding component includes a plurality of sector plates (34) rotatably connected to the lower plate (32), and the plurality of sector plates (34) fit together to close the through holes (33). A driving ring (35) is further rotatably connected between the upper plate (31) and the lower plate (32), and a connecting rod (36) is pin-connected between the driving ring (35) and the middle parts of the sector plates (34).

3. A high-power high-speed laser scanning galvanometer according to claim 2, characterized in that: A plurality of guide posts (37) are fixedly connected between the upper plate (31) and the lower plate (32). A plurality of guide grooves (38) are formed in the end face of the driving ring (35), and the guide posts (37) slide in the guide grooves (38).

4. A high-power high-speed laser scanning galvanometer according to claim 2, characterized in that: It further includes a driving component (4). The driving component (4) is installed on the bracket (2) and is used to drive the driving ring (35) to rotate.

5. A high-power high-speed laser scanning galvanometer according to claim 4, characterized in that: The driving component (4) includes a motor (41) fixed on the bracket (2). A gear (42) is fixed at the shaft end of the motor (41). A ring gear part (43) is arranged on the outer side of the driving ring (35), and the gear (42) is in meshing transmission with the ring gear part (43).

6. A high-power high-speed laser scanning galvanometer according to any one of claims 1-5, characterized in that: The bracket (2) includes a first arm (21) and two second arms (22) connected to the lower end of the first arm (21). The two second arms (22) are respectively fixed to the upper plate (31) and the lower plate (32).

Images