Test sample clamp for spectrograph

Abstract

The sample clamp comprises a box body, a test cavity is formed in the front end of the interior of the box body, the upper end of the test cavity is of an opening structure, two sliding grooves are formed in the upper portions of the two sides of the interior of the box body, the sliding grooves are communicated with the test cavity, the sliding grooves are symmetrically formed, moving plates are arranged in the sliding grooves, and the moving plates are connected with the test cavity. One end of the moving plate extends into the testing cavity, a rotating plate is arranged in one end of the moving plate, a driving motor is fixedly arranged at the upper end of the moving plate, an output shaft of the driving motor extends into the rotating plate and is fixedly connected with the rotating plate, and a second hydraulic telescopic device is fixedly arranged on one side of the rotating plate. By means of the structure, the problems that a clamping mechanism is not flexible enough to adjust, and a placing table is difficult to position are solved.

Description

Technical Field

[0001] This utility model relates to the field of spectrometer technology, specifically to a sample holder for testing spectrometers. Background Technology

[0002] A spectrometer is an instrument used to analyze the chemical and physical properties of substances. In spectroscopic analysis, a sample clamp is needed to hold the sample in place within the optical path for measurement. The sample clamp typically consists of a clamp body and a fixing device. The clamp body holds the sample, while the fixing device secures the clamp within the optical path. In use, first select a suitable clamp based on the sample's shape and size, then place the sample in the clamp and tighten it to ensure stability. Finally, fix the clamp within the spectrometer's optical path and adjust the sample's position and angle to meet the measurement requirements.

[0003] For example, Chinese patent CN211235497U, entitled "A Sample Holder for Transmission Testing of an Infrared Spectrometer," includes a base, a clamp, and a spring plate. The base is a rectangle with rounded corners and a circular hole. The hole has an outer circle and an inner circle, with the outer circle's diameter slightly larger than the inner circle's diameter, and the same as the sample plate's diameter. A ring-shaped platform, thinner than the base's thickness, is formed between the inner and outer circles to facilitate sample placement. The clamp and base are connected by a rotating shaft fixed to the base. The lower part of the rotating shaft is cylindrical, with a height slightly greater than the clamp's thickness, while the upper part is hemispherical or disc-shaped, and rotates with the shaft. The diameter of the small hole on the shaft-fitting fixture is slightly larger than the diameter of the rotating shaft, but smaller than the size of the upper part of the rotating shaft. This ensures that the fixture can rotate freely along the rotating shaft without falling off. The fixture has a circular hole with the same diameter as the inner circle of the circular hole on the base. When the fixture is closed, the inner circle of the circular hole on the fixture overlaps with the inner circle of the circular hole on the base, and the sample piece is located in the outer circle between the two circular holes without falling off. The spring plate is fixed to the base with screws. When the fixture is closed, the spring plate applies pressure to the fixture to fix it in place, thereby fixing the sample piece. All parts of the sample holder are made of stainless steel.

[0004] While the existing technologies can clamp and fix the sample, in practical use, the clamping mechanism is not flexible enough. It is usually fixed inside the housing, making it difficult to adjust to the appropriate position according to the sample size, thus reducing the adaptability of the clamping mechanism. On the other hand, the placement stage is difficult to position. It usually needs to be placed at the detection point, which makes it difficult to manually place the stage in the appropriate position, thus affecting the test results. Therefore, it does not meet the current needs. In response, we propose a sample clamp for spectrometer testing. Utility Model Content

[0005] The purpose of this invention is to provide a sample holder for testing a spectrometer, in order to solve the problems mentioned in the background art, such as the lack of flexibility in adjusting the clamping mechanism and the difficulty in positioning the placement stage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sample holder for a spectrometer, comprising a housing, a test cavity being provided at the front end of the housing, the upper end of the test cavity being an open structure, two sliding grooves being provided on the upper sides of both sides of the housing, the sliding grooves communicating with the test cavity and being symmetrically arranged, a movable plate being provided inside the sliding groove, one end of the movable plate extending into the test cavity, a rotating plate being provided inside one end of the movable plate, a drive motor being fixedly provided at the upper end of the movable plate, the output shaft of the drive motor extending into the interior of the rotating plate and being fixedly connected to the rotating plate, and a second hydraulic telescopic device being fixedly provided on one side of the rotating plate.

[0007] Preferably, a lead screw is provided inside the slide groove, and the front and rear ends of the lead screw are rotatably connected to the inner wall of the slide groove. The lead screw passes through the moving plate. A servo motor is provided inside the housing located on one side of the slide groove. The output shaft of the servo motor extends into the slide groove and is fixedly connected to the lead screw.

[0008] Preferably, a first hydraulic telescopic device is fixedly installed on both sides of the lower part of the box body, the telescopic end of the first hydraulic telescopic device extends into the interior of the test chamber, and a positioning plate is fixedly installed on one side of the telescopic end of the first hydraulic telescopic device.

[0009] Preferably, a mounting base is fixedly provided on one side of the telescopic end of the second hydraulic telescopic device, and a threaded rod is provided inside the mounting base. The lower end of the threaded rod extends to the bottom of the mounting base, and the threaded rod is connected to the mounting base by thread engagement.

[0010] Preferably, rubber pads are fixedly provided at the lower end of the threaded rod and on one side of the positioning plate.

[0011] Preferably, the test chamber is provided with a placement stage at the lower end between the positioning plates, the rubber pad on the positioning plate is in contact with the side wall of the placement stage, the sample is placed at the upper end of the placement stage, and the rubber pad at the lower end of the threaded rod is in contact with the sample.

[0012] Preferably, a fixing seat is fixedly provided at the rear ends of both sides of the upper end of the box body, and a box cover is provided between the fixing seats. The box cover is rotatably connected to the fixing seat and fits against the upper end of the box body. A handle is fixedly provided at the front end of the outer side of the box cover, and an observation window is fixedly provided inside the box cover. The observation window corresponds to the position of the test chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model can fix samples of different sizes by means of a lead screw and a rotating plate. When the clamping mechanism is adjusted, the sample has been placed on the placement table. At this time, the position of the clamping mechanism is adjusted according to the size of the sample. First, the servo motor is turned on, so that the output shaft of the servo motor drives the lead screw to rotate. The moving plate is driven to move in the slide groove through the thread on the outside of the lead screw until the moving plate is adjusted to a suitable position. At this time, the drive motor is turned on, and the output shaft of the drive motor drives the rotating plate and the second hydraulic telescopic device to rotate together until the mounting seat of the telescopic end of the second hydraulic telescopic device is rotated to a suitable position. At this time, the mounting seat is directly above the sample. Then, the subsequent operation is performed, thereby improving the adaptability of the clamping mechanism to samples of different sizes.

[0015] (2) This utility model can position the placement platform by means of the first hydraulic telescopic device and the positioning plate. Before testing, the position of the positioning plate is adjusted according to the size of the placement platform. The first hydraulic telescopic device is opened simultaneously to make the telescopic end of the first hydraulic telescopic device extend and retract. The telescopic end of the first hydraulic telescopic device drives the positioning plate to move inside the test chamber until the positioning plate is moved to the appropriate position. At this time, the placement platform is placed between the positioning plates. The first hydraulic telescopic device is opened again. The extension of the telescopic end of the first hydraulic telescopic device pushes the positioning plate closer to the placement platform until the rubber pad on the positioning plate contacts the placement platform and causes compression, thereby improving the accuracy of the placement position of the placement platform.

[0016] (3) This utility model can compress and fix the sample by means of a rubber pad and a threaded rod. When the sample is compressed and fixed, the position adjustment of the clamping mechanism has been completed. At this time, the threaded rod is rotated and moved downward inside the mounting base by the thread on the outside of the threaded rod. At the same time, the rubber pad at the lower end of the threaded rod moves downward together until the rubber pad contacts the sample. At this time, the threaded rod is rotated again so that the rubber pad at the lower end of the threaded rod compresses the sample, thereby improving the stability of the sample fixation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0018] Figure 2 This is a front view of the internal structure of this utility model;

[0019] Figure 3 This is a side view of the internal structure of this utility model;

[0020] Figure 4 This is a partial enlarged view of the clamping mechanism of this utility model.

[0021] In the diagram: 1. Box body; 2. Box cover; 3. Fixing base; 4. Handle; 5. Observation window; 6. Test chamber; 7. First hydraulic telescopic device; 8. Positioning plate; 9. Rubber pad; 10. Moving plate; 11. Drive motor; 12. Rotating plate; 13. Second hydraulic telescopic device; 14. Mounting base; 15. Threaded rod; 16. Placement stage; 17. Sample; 18. Slide groove; 19. Servo motor; 20. Lead screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a sample holder for a spectrometer, comprising a housing 1, a test cavity 6 at the front end of the housing 1, the upper end of the test cavity 6 being an open structure, a placement stage 16 at the lower end of the test cavity 6 located between positioning plates 8, a rubber pad 9 on the positioning plate 8 contacting the side wall of the placement stage 16, a sample 17 at the upper end of the placement stage 16, a rubber pad 9 at the lower end of the threaded rod 15 contacting the sample 17, a fixing seat 3 fixedly installed at the rear ends of both sides of the upper end of the housing 1, a housing cover 2 between the fixing seats 3, the housing cover 2 being rotatably connected to the fixing seats 3, and the housing cover 2 fitting against the upper end of the housing 1, a handle 4 fixedly installed at the front end of the outer side of the housing cover 2, and an observation window 5 fixedly installed inside the housing cover 2, the observation window 5 corresponding to the position of the test cavity 6.

[0024] Please see Figure 1 , Figure 2 and Figure 4 Two sliding grooves 18 are provided on the upper sides of both sides of the housing 1. The sliding grooves 18 are connected to the test chamber 6 and are symmetrically arranged. A movable plate 10 is provided inside the sliding groove 18. One end of the movable plate 10 extends into the test chamber 6. A rotating plate 12 is provided inside one end of the movable plate 10. A drive motor 11 is fixedly installed at the upper end of the movable plate 10. The output shaft of the drive motor 11 extends into the interior of the rotating plate 12 and is fixedly connected to the rotating plate 12. A second hydraulic telescopic device 13 is fixedly installed on one side of the rotating plate 12. A lead screw 20 is provided inside the sliding groove 18. The front and rear ends of the lead screw 20 are rotatably connected to the inner wall of the sliding groove 18 and the lead screw 20 passes through the movable plate 10. A servo motor 19 is provided inside the housing 1 on one side of the sliding groove 18. The output shaft of the servo motor 19 extends into the interior of the sliding groove 18 and is fixedly connected to the lead screw 20, so as to facilitate the adjustment of the position of the mounting base 14 by means of the servo motor 19 and the second hydraulic telescopic device 13.

[0025] Please see Figure 2 and Figure 4Both sides of the lower part of the box 1 are fixedly provided with a first hydraulic telescopic device 7. The telescopic end of the first hydraulic telescopic device 7 extends into the interior of the test chamber 6. A positioning plate 8 is fixedly provided on one side of the telescopic end of the first hydraulic telescopic device 7 to facilitate the positioning of the placement platform 16.

[0026] Please see Figure 3 and Figure 4 A mounting base 14 is fixedly installed on one side of the telescopic end of the second hydraulic telescopic device 13. A threaded rod 15 is installed inside the mounting base 14. The lower end of the threaded rod 15 extends to the bottom of the mounting base 14, and the threaded rod 15 is connected to the mounting base 14 by threaded engagement. Rubber pads 9 are fixedly installed on both the lower end of the threaded rod 15 and one side of the positioning plate 8, so that the sample 17 can be squeezed and fixed by the threaded rod 15, thereby enabling the threaded rod 15 to fix samples 17 of different thicknesses.

[0027] Working principle: Before testing, adjust the position of the positioning plate 8 according to the size of the placement stage 16. Simultaneously activate the first hydraulic telescopic device 7, causing its telescopic end to extend and retract. This extension and retraction of the first hydraulic telescopic device 7 moves the positioning plate 8 within the test chamber 6 until it reaches the appropriate position. Then, place the placement stage 16 between the positioning plates 8 and activate the first hydraulic telescopic device 7 again. This extension of the first hydraulic telescopic device 7 pushes the positioning plate 8 closer to the placement stage 16 until the rubber pad 9 on the positioning plate 8 contacts and compresses the placement stage 16. At this point, adjust the position of the clamping mechanism according to the size of the sample 17. Activate the servo motor 19, causing its output shaft to drive the wire... Rotating the rod 20 drives the moving plate 10 to move in the slide groove 18 through the external thread of the lead screw 20 until the moving plate 10 is adjusted to a suitable position. At this time, the drive motor 11 is turned on, and the output shaft of the drive motor 11 drives the rotating plate 12 and the second hydraulic telescopic device 13 to rotate together until the mounting seat 14 at the telescopic end of the second hydraulic telescopic device 13 is rotated to a suitable position. At this time, the mounting seat 14 is directly above the sample 17. Then, the threaded rod 15 is rotated, and the thread on the outside of the threaded rod 15 moves downward inside the mounting seat 14. At the same time, the rubber pad 9 at the lower end of the threaded rod 15 moves downward together until the rubber pad 9 contacts the sample 17. Then, the threaded rod 15 is rotated again, so that the rubber pad 9 at the lower end of the threaded rod 15 compresses the sample 17.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sample holder for testing a spectrometer, comprising a housing (1), characterized in that: The front end of the box (1) is provided with a test chamber (6). The upper end of the test chamber (6) is an open structure. There are two sliding grooves (18) on the upper sides of both sides of the box (1). The sliding grooves (18) are connected to the test chamber (6) and are symmetrically arranged. A movable plate (10) is provided inside the sliding groove (18). One end of the movable plate (10) extends into the test chamber (6). A rotating plate (12) is provided inside one end of the movable plate (10). A drive motor (11) is fixedly provided at the upper end of the movable plate (10). The output shaft of the drive motor (11) extends into the interior of the rotating plate (12) and is fixedly connected to the rotating plate (12). A second hydraulic telescopic device (13) is fixedly provided on one side of the rotating plate (12).

2. The sample holder for testing a spectrometer according to claim 1, characterized in that: The slide (18) is equipped with a lead screw (20), the front and rear ends of which are rotatably connected to the inner wall of the slide (18), and the lead screw (20) passes through the moving plate (10). The housing (1) located on one side of the slide (18) is equipped with a servo motor (19), the output shaft of which extends into the slide (18) and is fixedly connected to the lead screw (20).

3. A sample holder for testing a spectrometer according to claim 2, characterized in that: The lower sides of the box (1) are fixedly provided with a first hydraulic telescopic device (7), the telescopic end of the first hydraulic telescopic device (7) extends into the interior of the test chamber (6), and a positioning plate (8) is fixedly provided on one side of the telescopic end of the first hydraulic telescopic device (7).

4. A sample holder for testing a spectrometer according to claim 3, characterized in that: The second hydraulic telescopic device (13) has a mounting base (14) fixedly installed on one side of its telescopic end. The mounting base (14) has a threaded rod (15) inside. The lower end of the threaded rod (15) extends to the bottom of the mounting base (14), and the threaded rod (15) and the mounting base (14) are connected by threaded engagement.

5. A sample holder for testing a spectrometer according to claim 4, characterized in that: Rubber pads (9) are fixedly installed at the lower end of the threaded rod (15) and on one side of the positioning plate (8).

6. A sample holder for testing a spectrometer according to claim 5, characterized in that: The test chamber (6) is located between the positioning plates (8) and a placement platform (16) is provided at its lower end. The rubber pad (9) on the positioning plate (8) is in contact with the side wall of the placement platform (16). The sample (17) is provided at the upper end of the placement platform (16), and the rubber pad (9) at the lower end of the threaded rod (15) is in contact with the sample (17).

7. A sample holder for testing a spectrometer according to claim 6, characterized in that: The upper ends of the box (1) are fixedly provided with fixed seats (3) on both sides. A box cover (2) is provided between the fixed seats (3). The box cover (2) is rotatably connected to the fixed seats (3) and the box cover (2) is attached to the upper end of the box (1). A handle (4) is fixedly provided at the front end of the box cover (2). An observation window (5) is fixedly provided inside the box cover (2). The observation window (5) corresponds to the position of the test chamber (6).

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