High-precision driving device for moving mirror of infrared conversion spectrometer

Abstract

The utility model relates to the technical field of high-precision driving device of moving mirror of infrared conversion spectrometer, disclose a kind of high-precision driving device of moving mirror of infrared conversion spectrometer, including base, the top of base is fixedly connected with fixed block, the top of fixed block is fixedly connected with voice coil motor, by setting U-shaped frame, limit block and limit column structure outside voice coil motor, realize the stable guidance of moving mirror reciprocating sliding, avoid the deviation of moving mirror, by setting the connecting frame and bidirectional screw adjusting mechanism driven by micro motor, can flexibly adjust the distance between mounting block, to adapt to different size moving mirror, improve assembly convenience, by the cooperation of elastic mechanism and rubber sheet, make rubber sheet contact with its at the end of U-shaped frame reciprocating micro-motion, to generate buffering effect to moving mirror end movement, effectively absorb the impact energy of moving mirror, neither affect the linear precision of spectrum, can also prolong the service life of moving mirror structure, improve the stability of determination and spectral analysis efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of high-precision driving devices for moving mirrors of spectrometers, specifically a high-precision driving device for moving mirrors of infrared conversion spectrometers. Background Technology

[0002] An infrared conversion spectrometer is a precision instrument that analyzes optical signals using the principle of interference. The accuracy of the reciprocating motion of the moving mirror directly affects the stability of the interference fringes and the resolution of the spectrum. During operation, the moving mirror needs to achieve extremely high displacement accuracy and repeatability; the smoothness and linearity of its motion are key factors in ensuring the quality of the interference signal.

[0003] Existing moving mirror drive structures mostly use voice coil motors for linear reciprocating drive. However, due to the lightweight, short stroke, and high frequency of the moving mirror, it is prone to impact vibration at the end of the reciprocating motion, resulting in mechanical jitter and nonlinear interference fringes, which in turn affects the measurement accuracy of the spectrum. In addition, traditional structures lack flexible adjustment mechanisms when installing the moving mirror, making it difficult to accommodate moving mirror components of different sizes, and maintenance and replacement are also relatively inconvenient.

[0004] Therefore, it is necessary to design a high-precision driving device for the moving mirror of an infrared conversion spectrometer to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision driving device for the moving mirror of an infrared conversion spectrometer, which solves the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision driving device for the moving mirror of an infrared conversion spectrometer, comprising a base, a fixing block fixedly connected to the top of the base, a voice coil motor fixedly connected to the top of the fixing block, a U-shaped frame fixedly connected to one side of the voice coil motor, two symmetrical grooves opened on the top of the base, and two symmetrical limiting blocks fixedly connected to the bottom end of the U-shaped frame, with limiting posts fixedly connected inside the two grooves, two symmetrical mounting blocks slidably arranged on the top of the U-shaped frame, each mounting block having threaded mounting holes, a fixing plate fixedly connected to the top of the base, a micro motor fixedly connected to one side of the fixing plate, a screw fixedly connected to the output shaft of the micro motor, a connecting frame threaded onto the outer surface of the screw, elastic mechanisms fixedly connected to both ends of the connecting frame, and a rubber sheet fixedly connected to one end of the elastic mechanism.

[0007] Preferably, the top of the U-shaped frame is provided with two symmetrical sliding grooves, and a bidirectional threaded rod is rotatably inserted into the interior of the two sliding grooves. Both ends of the bidirectional threaded rod are threaded with threaded sleeve blocks. The two mounting blocks are respectively fixed to the top of the two threaded sleeve blocks, and a knob is fixed to one end of the bidirectional threaded rod.

[0008] Preferably, the two limiting posts are slidably inserted into the interior of the two limiting blocks, and the two sides of the two limiting blocks are respectively attached to the two sides of the two grooves.

[0009] Preferably, the elastic mechanism includes a connecting cylinder, which is fixedly connected to one end of the connecting frame, and a spring is fixedly connected to one side of the inner cavity of the connecting cylinder. A pressure plate is fixedly connected to one end of the spring, and a post is fixedly connected to one side of the pressure plate. A rubber sheet is fixedly connected to one end of the post. The pressure plate is slidably disposed inside the connecting cylinder, and the outer surface of the pressure plate is in contact with the inner wall of the connecting cylinder.

[0010] Preferably, the connecting frame is U-shaped, and the bottom ends of both ends of the connecting frame are in contact with the top of the fixing block.

[0011] Preferably, both rubber sheets are slidably disposed on one side of the fixed block, and gaps are formed between the two rubber sheets and the U-shaped frame.

[0012] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0013] This invention achieves stable guidance for the reciprocating sliding of the moving mirror by setting a U-shaped frame, limiting blocks, and limiting columns outside the voice coil motor, thus preventing the moving mirror from shifting. By setting a connecting frame driven by a micro motor and a bidirectional threaded adjustment mechanism, the spacing of the mounting blocks can be flexibly adjusted to accommodate moving mirrors of different sizes, improving assembly convenience. Through the cooperation of the elastic mechanism and the rubber sheet, the rubber sheet contacts the end of the U-shaped frame during its reciprocating micro-movement, thereby buffering the movement of the moving mirror end and effectively absorbing the impact energy of the moving mirror. This not only does not affect the linearity accuracy of the spectrum but also extends the service life of the moving mirror structure, improving the stability of the measurement and the efficiency of spectral analysis. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an exploded view of the base structure of this utility model;

[0016] Figure 3 This is an exploded view of the connecting cylinder structure of this utility model;

[0017] In the diagram: 1. Base; 2. Voice coil motor; 3. Micro motor; 4. Fixing plate; 5. Connecting frame; 6. Screw; 7. U-shaped frame; 8. Knob; 9. Mounting block; 10. Sliding groove; 11. Groove; 12. Connecting cylinder; 13. Insert post; 14. Rubber sheet; 15. Two-way threaded rod; 16. Threaded sleeve block; 17. Limiting block; 18. Limiting post; 19. Spring; 20. Pressure plate; 21. Fixing block. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Obviously, many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Please see Figure 1-3 This utility model provides a high-precision driving device for the moving mirror of an infrared conversion spectrometer, including a base 1. A fixing block 21 is fixedly connected to the top of the base 1, and a voice coil motor 2 is fixedly connected to the top of the fixing block 21. A U-shaped frame 7 is fixedly connected to one side of the voice coil motor 2. Two symmetrical grooves 11 are opened on the top of the base 1, and two symmetrical limiting blocks 17 are fixedly connected to the bottom end of the U-shaped frame 7. Limiting posts 18 are fixedly connected inside the two grooves 11. Two symmetrical mounting blocks 9 are slidably arranged on the top of the U-shaped frame 7. Each mounting block 9 has a threaded mounting hole. A fixing plate 4 is fixedly connected to the top of the base 1. A micro motor 3 is fixedly connected to one side of the fixing plate 4. A screw 6 is fixedly connected to the output shaft of the micro motor 3. A connecting frame 5 is threadedly sleeved on the outer surface of the screw 6. Each end is fixed with an elastic mechanism, and one end of the elastic mechanism is fixed with a rubber sheet 14. By sliding and adjusting the two mounting blocks 9, moving mirrors of different sizes can be installed. When the voice coil motor 2 is turned on, the moving mirror will reciprocate slightly on the U-shaped frame 7. The limiting blocks 17 at the bottom of the two U-shaped frames 7 prevent the moving mirror from shifting. At the same time, the two limiting posts 18 further prevent the moving mirror from shifting. By turning on the micro motor 3, the position of the two connecting cylinders 12 and the two rubber sheets 14 can be adjusted by sliding the connecting frame 5. The two rubber sheets 14 contact the U-shaped frame 7 at the end of the reciprocating slight movement of the U-shaped frame 7, thereby buffering the impact force of the moving mirror. This does not affect the spectral linearity, improves the service life of the device, and improves the efficiency of spectral measurement.

[0021] To facilitate the adjustment of the distance between the two mounting blocks 9 for the installation of moving mirrors of different sizes, the top of the U-shaped frame 7 is provided with two symmetrical sliding grooves 10. A bidirectional threaded rod 15 is rotatably inserted into the interior of the two sliding grooves 10. Both ends of the bidirectional threaded rod 15 are threaded with threaded sleeve blocks 16. The two mounting blocks 9 are respectively fixed to the top of the two threaded sleeve blocks 16. A knob 8 is fixed to one end of the bidirectional threaded rod 15.

[0022] Furthermore, in conjunction with the two limiting blocks 17, the stability of the reciprocating micro-motion of the moving mirror is improved. The two limiting posts 18 are respectively slidably inserted into the interior of the two limiting blocks 17, and the two sides of the two limiting blocks 17 are respectively attached to the two sides of the two grooves 11.

[0023] Furthermore, in order to utilize the elasticity of the two rubber sheets 14 to buffer the micro-impact of the U-shaped frame 7, the elastic mechanism includes a connecting cylinder 12, which is fixed to one end of the connecting frame 5. A spring 19 is fixed to one side of the inner cavity of the connecting cylinder 12, a pressure plate 20 is fixed to one end of the spring 19, and a post 13 is fixed to one side of the pressure plate 20. The rubber sheet 14 is fixed to one end of the post 13. The pressure plate 20 is slidably disposed inside the connecting cylinder 12, and the outer surface of the pressure plate 20 is in contact with the inner wall of the connecting cylinder 12.

[0024] To facilitate the horizontal sliding adjustment of the two connecting cylinders 12, the connecting frame 5 is U-shaped, and the bottom of both ends of the connecting frame 5 are in contact with the top of the fixing block 21.

[0025] In order to provide sliding space for the two rubber sheets 14, both rubber sheets 14 are slidably disposed on the outside of one side of the fixed block 21, and gaps are formed between the two rubber sheets 14 and the U-shaped frame 7.

[0026] In use, the distance between the two mounting blocks 9 is adjusted by rotating the knob 8 to install the required moving mirror, which is convenient for disassembly and assembly. During operation, the micro motor 3 is turned on according to the required reciprocating amplitude of the moving mirror. The position of the two rubber sheets 14 is adjusted by sliding the connecting frame 5, thereby buffering the sliding end of the U-shaped frame 7. The stability of the reciprocating micro-motion of the moving mirror is improved by the two limiting blocks 17 and the two limiting posts 18, thereby improving the overall measurement efficiency and accuracy.

[0027] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0028] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0029] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A high-precision driving device for the moving mirror of an infrared conversion spectrometer, comprising a base (1), characterized in that: A fixing block (21) is fixedly connected to the top of the base (1), and a voice coil motor (2) is fixedly connected to the top of the fixing block (21). A U-shaped frame (7) is fixedly connected to one side of the voice coil motor (2). Two symmetrical grooves (11) are opened on the top of the base (1), and two symmetrical limiting blocks (17) are fixedly connected to the bottom of the U-shaped frame (7). Limiting posts (18) are fixedly connected inside the two grooves (11). A sliding part is provided on the top of the U-shaped frame (7). Two symmetrical mounting blocks (9) are provided, each with a threaded mounting hole. A fixing plate (4) is fixed to the top of the base (1). A micro motor (3) is fixed to one side of the fixing plate (4). A screw (6) is fixed to the output shaft of the micro motor (3). A connecting frame (5) is threaded onto the outer surface of the screw (6). Both ends of the connecting frame (5) are fixed with elastic mechanisms. A rubber sheet (14) is fixed to one end of the elastic mechanism.

2. The high-precision driving device for the moving mirror of an infrared conversion spectrometer according to claim 1, characterized in that: The top of the U-shaped frame (7) is provided with two symmetrical sliding grooves (10). A bidirectional threaded rod (15) is rotatably inserted into the two sliding grooves (10). Both ends of the bidirectional threaded rod (15) are threaded with threaded sleeve blocks (16). The two mounting blocks (9) are respectively fixed to the top of the two threaded sleeve blocks (16). A knob (8) is fixed to one end of the bidirectional threaded rod (15).

3. The high-precision driving device for the moving mirror of an infrared conversion spectrometer according to claim 1, characterized in that: The two limiting posts (18) are slidably inserted into the interior of the two limiting blocks (17), and the two sides of the two limiting blocks (17) are respectively attached to the two sides of the two grooves (11).

4. The high-precision driving device for the moving mirror of an infrared conversion spectrometer according to claim 1, characterized in that: The elastic mechanism includes a connecting cylinder (12), which is fixed to one end of the connecting frame (5). A spring (19) is fixed to one side of the inner cavity of the connecting cylinder (12). A pressure plate (20) is fixed to one end of the spring (19). A post (13) is fixed to one side of the pressure plate (20). A rubber sheet (14) is fixed to one end of the post (13). The pressure plate (20) is slidably disposed inside the connecting cylinder (12), and the outer surface of the pressure plate (20) is in contact with the inner wall of the connecting cylinder (12).

5. The high-precision driving device for the moving mirror of an infrared conversion spectrometer according to claim 4, characterized in that: The connecting frame (5) is U-shaped, and the bottom of both ends of the connecting frame (5) are in contact with the top of the fixing block (21).

6. The high-precision driving device for the moving mirror of an infrared conversion spectrometer according to claim 1, characterized in that: Both rubber sheets (14) are slidably disposed on one side of the fixed block (21), and gaps are formed between the two rubber sheets (14) and the U-shaped frame (7).

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