Angle-Precisely Adjustable Fourier Transform Infrared Spectrometer Sample Stage

Abstract

The present invention discloses a sample stage of a Fourier infrared spectrometer with precise adjustable angle, which specifically relates to the technical field of optical detection instruments, including a detection sample plate, a rotating shaft, a small gear and a synchronous vertical sample positioning mechanism; wherein the synchronous vertical sample positioning mechanism includes a large gear, a positioning support ring, a limit rotating ring, a linkage ring, a plurality of concave strips, a push rod, a sleeve push rod, a linkage rod and a sample positioning column, and also includes a placement precision detection mechanism and a horizontal sample precision positioning mechanism. The present invention has a synchronous vertical sample positioning mechanism, which can synchronously vertically position the detection sample according to a specified extrusion force through a plurality of sample positioning columns, thereby avoiding the problem of vertical offset and shaking between the detection sample and the first infrared light through hole, so that the Fourier infrared spectrometer has the advantage of greatly improving the accuracy of sample detection when detecting the sample, thereby solving the problem of poor detection accuracy when the Fourier infrared spectrometer detects the sample.

Description

Technical Field

[0001] The invention relates to the technical field of optical detection instruments, and more specifically to a sample stage of a Fourier infrared spectrometer with precise adjustable angle. Background Art

[0002] The angle-adjustable sample stage allows the experimenter to fine-tune the sample to ensure that the sample is in the best position during the measurement. This precision is crucial to obtaining accurate infrared spectral data, because even a slight position deviation may affect the absorption peak position and intensity of the spectrum, thereby affecting the accuracy of the analysis results.

[0003] In the existing public documents, the patent announcement number CN216560262U discloses a sample stage for measuring powder samples by Fourier transform infrared spectrometer tablet method, which allows infrared light to completely pass through the polytetrafluoroethylene component to reach the receiver without affecting the light path, and there is no need to worry about the influence of the polytetrafluoroethylene component on the test results during the test. The polytetrafluoroethylene sample groove is attached to the surface of the polytetrafluoroethylene component, which can be conveniently placed and taken out of the sheet sample, without worrying about the sheet sample falling and being damaged, and the influence of the tape movement on the test results, which increases the test rate and the credibility of the test results. However, this technology still has the following defects.

[0004] When the Fourier infrared spectrometer is performing detection, it is necessary to perform spectral detection on the sample on the sample stage by infrared light detection. After the sample is placed, it will move downward due to the action of gravity. This results in the sample stage being able to be placed at a specified angle, but it will generate a vertical offset force and vertical shaking. In addition, since the sample on the sample stage is not positioned laterally, it will also cause the sample on the sample stage to shift and shake laterally, making it difficult to perform vertical multi-point positioning detection on the sample at a specified angle, and it is also difficult to achieve precise lateral positioning of the sample at a specified angle. When the Fourier infrared spectrometer is detecting samples, the detection accuracy is poor. Therefore, an angle-precision adjustable Fourier infrared spectrometer sample stage is provided. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: a sample stage of a precisely adjustable angle Fourier infrared spectrometer, comprising a detection sample plate, the inner wall of the detection sample plate is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a pinion, and the outer wall of the pinion is provided with a synchronous vertical sample positioning mechanism; the synchronous vertical sample positioning mechanism comprises a large gear meshingly arranged on the outer wall of the pinion, one side of the large gear is rotatably connected to a positioning support ring, and the positioning support ring is fixedly connected to the detection sample plate, the other side of the large gear is rotatably connected to a limiting swivel, the inner wall of the large gear is fixedly connected to a linkage ring, the linkage ring is fixedly connected to the limiting swivel, and the detection sample plate and the positioning support ring are both rotatably connected to the linkage ring.

[0006] The inner wall of the linkage ring is fixedly connected with a plurality of concave strips, the inner wall of each concave strip is fixedly connected with a push rod, the outer wall of the push rod is rotatably connected with a sleeve push rod, the inner wall of the sleeve push rod and the position away from the push rod is rotatably connected with a linkage rod, the top of the linkage rod is fixedly installed with a sample positioning column, the outer wall of the sample positioning column is slidably connected with a guide sleeve strip, and the guide sleeve strip is fixedly connected to the detection sample plate; a first infrared light transmission hole is opened inside the guide sleeve strip, and a torque sensor is fixedly installed at one end of the rotating shaft; a placement precision detection mechanism is provided on one side of the torque sensor; and a horizontal sample precision positioning mechanism is installed on the top of the detection sample plate.

[0007] Preferably, a plurality of the concave strips are arranged in a circular ring with equal spacing, and the vertical cross-section of the linkage ring is in a circular ring shape; a plurality of the sample positioning columns are arranged in a circular ring with equal spacing. The sensing end of the torque sensor is fixedly connected to a first reduction motor, and a support block is fixedly connected to one side of the first reduction motor; the torque sensor is fixedly connected to a detection sample plate, and the support block is fixedly connected to the detection sample plate. A detection sample is slidably connected to one side of the first infrared light permeable hole; a concave rotating plate is fixedly connected to the bottom end of the detection sample plate, and a linkage shaft is fixedly connected to the inner wall of the concave rotating plate, one end of the linkage shaft is fixedly installed with a second reduction motor, and the other end of the linkage shaft is fixedly installed with an angle sensor; the outer wall of the linkage shaft is rotatably connected to a sleeve base near the middle position thereof, the second reduction motor and the angle sensor are both fixedly connected to the sleeve base, and a controller is fixedly installed on one side of the sleeve base.

[0008] When this technology is in use, the first reduction motor drives the sensing end of the torque sensor to rotate, and the sensing end of the torque sensor can drive the rotating shaft to rotate, and the small gear drives the large gear to rotate counterclockwise. The large gear drives the linkage ring to rotate vertically counterclockwise, and the linkage ring drives multiple concave bars to rotate vertically counterclockwise, so that the push rod approaches the position of the sample positioning column, so that the push rod drives one end of the sleeve push rod to rotate, and the other end of the sleeve push rod drives the linkage rod to move up, and the linkage rod drives the sample positioning column to move up. Multiple sample positioning columns slide synchronously from the inner wall of the guide sleeve strip, so that multiple sample positioning columns can approach the center point of the first infrared light permeable hole, so that multiple sample positioning columns begin to squeeze the test sample.

[0009] Preferably, the placement precision detection mechanism includes a positioning distance sensor arranged on one side of the torque force sensor; the positioning distance sensor is fixedly connected to the detection sample plate, a sliding frame fixedly connected to the detection sample plate is provided on one side of the positioning distance sensor, and a screw is rotatably connected to the inner wall of the sliding frame; a driving motor is fixedly installed on the top of the sliding frame, and the driving motor is used to drive the screw to rotate, and a threaded sleeve is threadedly connected to the outer wall of the screw, and the threaded sleeve is slidably connected to the sliding frame; a connecting column is fixedly installed on one side of the threaded sleeve, and a detection distance sensor is fixedly connected to the bottom end of the outer wall of the connecting column, and a proximity sensor is plugged into one end of the connecting column, and a sensing block is provided on one side of the proximity sensor, and the sensing block is fixedly connected to the detection sample plate. The output end of the driving motor is fixedly connected to the screw, and the outer wall of the threaded sleeve and the inner wall of the sliding frame are both smooth surfaces. The vertical cross-section of the sensing block is rectangular, and the right side of the positioning distance sensor is arranged parallel to the left side of the sensing block.

[0010] When this technology is in use, the drive motor drives the screw to rotate, the threaded sleeve drives the connecting column to move downward, and the connecting column drives the proximity sensor to move downward. When the proximity sensor can sense the sensing block, the detection distance sensor is immediately turned on by the controller. Until the connecting column moves downward to the position above the positioning distance sensor, the detection distance sensor can perform multi-point distance sensing on the detection sample at the first infrared light penetration hole position. When the distance value sensed by the detection distance sensor is the same as the distance value set by the controller, the detection sample at the first infrared light penetration hole position does not have an offset problem. At the same time, when the distance value sensed by the positioning distance sensor is the same as the distance set by the controller, the drive motor is turned off by the controller.

[0011] Preferably, the transverse sample precise positioning mechanism comprises a sliding frame fixedly mounted on the top of the detection sample plate; the inner wall of the sliding frame is slidably connected with a sliding sleeve block, the bottom end of the sliding sleeve block is fixedly mounted with a positioning cover plate, the interior of the positioning cover plate is provided with a second infrared light permeable hole, the upper surface of the sliding frame is fixedly connected with a micro-electric cylinder; the output end of the micro-electric cylinder is fixedly mounted with a pressure sensor, and one side of the pressure sensor is fixedly connected with a pressure strip, and the pressure strip is fixedly connected to the sliding sleeve block. The outer wall of the sliding sleeve block and the inner wall of the sliding frame are both smooth surfaces, and the vertical cross-section of the second infrared light permeable hole is circular.

[0012] When this technology is in use, the micro-electric cylinder pushes the pressure sensor to move left, the pressure strip drives the sliding sleeve to move left, the sliding sleeve drives the positioning cover to move left, and the positioning cover drives the second infrared light penetration hole to squeeze on the right side of the test sample, so that the center point of the second infrared light penetration hole and the center point of the test sample maintain the same inclined line position. When the pressure value sensed by the pressure sensor is the same as the pressure value set by the controller, the micro-electric cylinder is closed by the controller.

[0013] Technical effects and advantages of the present invention:

[0014] 1. The present invention uses a synchronous vertical sample positioning mechanism, so that the angle of the test sample placed at the inner wall of the guide sleeve strip can be precisely adjusted. The first reduction motor drives the sensing end of the torque sensor to rotate, and the sensing end of the torque sensor can drive the rotating shaft to rotate, and the rotating shaft drives the pinion to rotate, and the linkage ring drives multiple concave strips to rotate vertically counterclockwise, and the push rod drives one end of the sleeve push rod to rotate, and the other end of the sleeve push rod drives the linkage rod to move upward, and the center point of the test sample begins to maintain the same inclined line position as the center point of the first infrared light penetration hole. The test sample can be precisely adjusted at a specified angle, and at the same time, the test sample is synchronously vertically positioned according to a specified extrusion force through multiple sample positioning columns to avoid the problem of vertical offset and shaking between the test sample and the first infrared light penetration hole, so that the Fourier infrared spectrometer greatly improves the sample detection accuracy when detecting the sample.

[0015] 2. The present invention adopts a precise detection mechanism. The driving motor drives the screw to rotate. The screw drives the threaded sleeve to move downward under the action of the thread transmission force. At the same time, the threaded sleeve drives the connecting column to move downward. When the proximity sensor can sense the sensing block, the detection distance sensor is immediately turned on by the controller until the connecting column moves downward to the position above the positioning distance sensor. The detection distance sensor can perform multi-point distance sensing on the detection sample at the first infrared light through hole position. When the distance data sensed by the detection distance sensor is the same as the distance value set by the controller, the detection sample at the first infrared light through hole position does not have a vertical offset problem. When the Fourier infrared spectrometer detects the sample, the sample detection accuracy is greatly improved.

[0016] 3. The present invention adopts a precise detection mechanism. The micro-electric cylinder pushes the pressure sensor to move left, the pressure strip drives the sliding sleeve to move left, the sliding sleeve slides left along the inner wall of the sliding frame, and the positioning cover drives the second infrared light through hole to be squeezed on the right side of the detection sample. The center point of the second infrared light through hole and the center point of the detection sample maintain the same inclined line position. When the pressure value sensed by the pressure sensor is the same as the pressure value set by the controller, the micro-electric cylinder is closed by the controller to avoid lateral offset and shaking between the detection sample and the first infrared light through hole. Therefore, when the Fourier infrared spectrometer detects the sample, the accuracy of sample detection is greatly improved.

[0017] The interaction of the above multiple effects first enables multiple sample positioning columns to synchronously vertically position the test sample according to the specified extrusion force, then enables the positioning cover to drive the second infrared light through hole to squeeze on the right side of the test sample, and finally enables the detection distance sensor to perform multi-point distance sensing on the test sample at the position of the first infrared light through hole to determine that there is no offset or shaking problem with the test sample. In summary, the vertical offset and shaking problems between the test sample and the first infrared light through hole, as well as the lateral offset and shaking problems, are avoided, and the Fourier infrared spectrometer greatly improves the accuracy of sample detection when detecting samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the sample stage of the angle-precision adjustable Fourier infrared spectrometer of the present invention.

[0019] Figure 2 It is a schematic diagram of the vertical cross-section structure of the sample stage of the angle-precision adjustable Fourier infrared spectrometer of the present invention.

[0020] Figure 3 It is a schematic diagram of the partial structure of the connection between the rotating shaft and the detection sample plate of the present invention.

[0021] Figure 4 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0022] Figure 5 It is a schematic diagram of the local structure of the vertical section of the connection between the linkage rod and the sample positioning column of the present invention.

[0023] Figure 6 The figure is a schematic diagram of the side view structure of the sample stage of the angle-precision adjustable Fourier infrared spectrometer of the present invention.

[0024] Figure 7 It is a schematic diagram of the partial structure of the connection between the detection sample plate and the support block of the present invention.

[0025] Figure 8It is a schematic diagram of the partial structure of the connection between the detection sample plate and the concave rotating plate of the present invention when viewed from above.

[0026] Fig. 9 It is a schematic diagram of the partial structure of the connection between the detection sample plate and the positioning distance sensor of the present invention.

[0027] Fig.10 It is a schematic diagram of the top view of the precise detection mechanism of the present invention.

[0028] Fig.11 It is a schematic diagram of the partial structure of the connection between the sliding sleeve block and the positioning cover plate of the present invention.

[0029] The accompanying drawings are marked as follows: 1. test sample plate; 2. rotating shaft; 3. small gear; 4. large gear; 5. positioning support ring; 6. limit rotating ring; 7. linkage ring; 8. concave strip; 9. push rod; 10. sleeve push rod; 11. linkage rod; 12. sample positioning column; 13. guide sleeve strip; 14. first infrared light permeable hole; 15. torque sensor; 16. first reduction motor; 17. support block; 18. test sample; 19. concave rotating plate; 20. linkage shaft; 21. second Reduction motor; 22. Angle sensor; 23. Socket base; 24. Controller; 25. Positioning distance sensor; 26. Slide frame; 27. Screw; 28. Threaded sleeve; 29. ​​Drive motor; 30. Connecting column; 31. Detection distance sensor; 32. Proximity sensor; 33. Induction block; 34. Slide frame; 35. Slide sleeve; 36. Positioning cover; 37. Second infrared light hole; 38. Micro electric cylinder; 39. Pressure sensor; 40. Pressure strip. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] As attached Figure 1 - Attachment Fig.11 The angle-precision adjustable Fourier infrared spectrometer sample stage shown in the figure is provided with a synchronous vertical sample positioning mechanism, a precise detection mechanism, and a lateral sample precise positioning mechanism. The arrangement of each mechanism can avoid the vertical offset and shaking problem between the detection sample 18 and the first infrared light transparent hole 14, as well as the lateral offset and shaking problem. When the Fourier infrared spectrometer detects samples, the sample detection accuracy is greatly improved. The specific structural arrangement of each mechanism is as follows.

[0032] In this embodiment, as shown in the attached Figure 1 - Attachment Figure 6 As shown, the outer wall of the pinion 3 is provided with a synchronous vertical sample positioning mechanism; the synchronous vertical sample positioning mechanism includes a large gear 4 which is meshingly transmitted and arranged on the outer wall of the pinion 3, one side of the large gear 4 is rotatably connected with a positioning support ring 5, and the positioning support ring 5 is fixedly connected to the detection sample plate 1, and the other side of the large gear 4 is rotatably connected with a limited rotating ring 6, the inner wall of the large gear 4 is fixedly connected with a linkage ring 7, the linkage ring 7 is fixedly connected to the limited rotating ring 6, and the detection sample plate 1 and the positioning support ring 5 are both rotatably connected to the linkage ring 7.

[0033] The inner wall of the linkage ring 7 is fixedly connected with a plurality of concave strips 8, the inner wall of each concave strip 8 is fixedly connected with a push rod 9, the outer wall of the push rod 9 is rotatably connected with a sleeve push rod 10, the inner wall of the sleeve push rod 10 and the position away from the push rod 9 is rotatably connected with a linkage rod 11, the top of the linkage rod 11 is fixedly installed with a sample positioning column 12, the outer wall of the sample positioning column 12 is slidably connected with a guide sleeve strip 13, and the guide sleeve strip 13 is fixedly connected to the detection sample plate 1; a first infrared light transmission hole 14 is opened inside the guide sleeve strip 13, and a torque sensor 15 is fixedly installed at one end of the rotating shaft 2; a placement precision detection mechanism is provided on one side of the torque sensor 15; and a horizontal sample precision positioning mechanism is installed on the top of the detection sample plate 1.

[0034] In this embodiment, as shown in the attached Figure 7 - Attachment Figure 8 As shown, the sensing end of the torque sensor 15 is fixedly connected to the first reduction motor 16, and a support block 17 is fixedly connected to one side of the first reduction motor 16; the torque sensor 15 is fixedly connected to the detection sample plate 1, and the support block 17 is fixedly connected to the detection sample plate 1, so that the detection sample plate 1 supports the support block 17, and the support block 17 provides supporting force for the first reduction motor 16, so that the first reduction motor 16 drives the sensing end of the torque sensor 15 to rotate.

[0035] A test sample 18 is slidably connected to one side of the first infrared light through hole 14; a concave rotating plate 19 is fixedly connected to the bottom end of the test sample plate 1, and a linkage shaft 20 is fixedly connected to the inner wall of the concave rotating plate 19, and a second reduction motor 21 is fixedly installed on one end of the linkage shaft 20, and an angle sensor 22 is fixedly installed on the other end of the linkage shaft 20; a sleeve base 23 is rotatably connected to the outer wall of the linkage shaft 20 and near the middle position thereof, and the second reduction motor 21 and the angle sensor 22 are both fixedly connected to the sleeve base 23, and a controller 24 is fixedly installed on one side of the sleeve base 23, so as to place the test sample 18 at the position of the first infrared light through hole 14, and at the same time, the test sample 18 is located at the inner wall position of the guide sleeve strip 13. Then, the second reduction motor 21 is started by the controller 24 to drive the linkage shaft 20 to rotate. The linkage shaft 20 rotates inside the socket base 23. At the same time, the socket base 23 supports the second reduction motor 21, and the socket base 23 supports the angle sensor 22. In this way, the linkage shaft 20 drives the concave rotating plate 19 to rotate, and the concave rotating plate 19 drives the detection sample plate 1 to rotate, so that the detection sample 18 placed on the inner wall of the guide sleeve 13 can be precisely adjusted in angle.

[0036] In this embodiment, as shown in the attached Figure 7 - Attachment Fig. 9 As shown, the placement precision detection mechanism includes a positioning distance sensor 25 arranged on one side of the torque sensor 15; the positioning distance sensor 25 is fixedly connected to the detection sample plate 1, and one side of the positioning distance sensor 25 is provided with a sliding frame 26 fixedly connected to the detection sample plate 1, and the inner wall of the sliding frame 26 is rotatably connected to a screw rod 27; a driving motor 29 is fixedly installed on the top of the sliding frame 26, and the driving motor 29 is used to drive the screw rod 27 to rotate, and the outer wall of the screw rod 27 is threadedly connected to a threaded sleeve block 28, and the threaded sleeve block 28 and the sliding frame 26 are slidably connected.

[0037] A connecting column 30 is fixedly installed on one side of the threaded sleeve 28, and a detection distance sensor 31 is fixedly connected to the bottom end of the outer wall of the connecting column 30. A proximity sensor 32 is plugged into one end of the connecting column 30, and a sensing block 33 is provided on one side of the proximity sensor 32. The sensing block 33 is fixedly connected to the detection sample plate 1. The output end of the driving motor 29 is fixedly connected to the screw 27, and the outer wall of the threaded sleeve 28 and the inner wall of the sliding frame 26 are both smooth surfaces. The vertical cross-section of the sensing block 33 is rectangular, and the right side surface of the positioning distance sensor 25 is parallel to the left side surface of the sensing block 33.

[0038] In this embodiment, as shown in the attached Fig.10 - Attachment Fig.11As shown, the transverse sample precise positioning mechanism includes a sliding frame 34 fixedly mounted on the top of the detection sample plate 1; the inner wall of the sliding frame 34 is slidably connected with a sliding sleeve 35, the bottom end of the sliding sleeve 35 is fixedly mounted with a positioning cover plate 36, the interior of the positioning cover plate 36 is provided with a second infrared light through hole 37, and the upper surface of the sliding frame 34 is fixedly connected with a micro electric cylinder 38; the output end of the micro electric cylinder 38 is fixedly mounted with a pressure sensor 39, and one side of the pressure sensor 39 is fixedly connected with a pressure strip 40, and the pressure strip 40 is fixedly connected to the sliding sleeve 35. The outer wall of the sliding sleeve 35 and the inner wall of the sliding frame 34 are both smooth surfaces, the vertical cross-section of the second infrared light through hole 37 is circular, the cross-section of the pressure strip 40 is L-shaped, and the pressure strip 40 is slidably connected to the sliding frame 34.

[0039] The working principle of the sample stage of the angle-precision adjustable Fourier infrared spectrometer in this embodiment is as follows:

[0040] Step 1: When the angle is precisely adjusted, the controller 24 is first powered by the battery inside, and the socket base 23 is placed in the detection area of ​​the Fourier infrared spectrometer. The second reduction motor 21 is started by the controller 24, and the second reduction motor 21 drives the linkage shaft 20 to rotate. The linkage shaft 20 rotates inside the socket base 23, and the socket base 23 supports the second reduction motor 21, and the socket base 23 supports the angle sensor 22. The linkage shaft 20 drives the concave rotating plate 19 to rotate, and the concave rotating plate 19 drives the detection sample plate 1 to rotate, so that the detection sample plate 1 drives the guide sleeve 13 to rotate, so that the detection sample 18 placed at the inner wall of the guide sleeve 13 can be precisely adjusted in angle. The linkage shaft 20 is angle-sensed by the angle sensor 22. When the angle value sensed by the angle sensor 22 is the same as the angle value set by the controller 24, the second reduction motor 21 is turned off by the controller 24.

[0041] Step 2: When positioning the sample vertically synchronously, the torque sensor 15 is started through the controller 24, and the sample plate 1 is detected to support the support block 17. The support block 17 provides support force for the first reduction motor 16, so that the first reduction motor 16 drives the sensing end of the torque sensor 15 to rotate, and detects that the sample plate 1 supports the torque sensor 15, thereby increasing the stability of the torque sensor 15. The sensing end of the torque sensor 15 can drive the rotating shaft 2 to rotate, the rotating shaft 2 drives the small gear 3 to rotate, and the small gear 3 drives the large gear 4 to rotate counterclockwise. At the same time, the large gear 4 rotates vertically counterclockwise on the positioning support ring 5, and the large gear 4 drives the linkage ring 7 to rotate vertically counterclockwise, and at the same time, the large gear 4 rotates vertically counterclockwise on the limit rotating ring 6, and at the same time, the linkage ring 7 rotates vertically counterclockwise on the inner wall of the positioning support ring 5.

[0042] At the same time, the linkage ring 7 drives the multiple concave strips 8 to rotate vertically counterclockwise, and the concave strips 8 drive the push rod 9 to rotate vertically counterclockwise, so that the push rod 9 approaches the position of the sample positioning column 12, so that the push rod 9 drives one end of the sleeve push rod 10 to rotate, and the other end of the sleeve push rod 10 drives the linkage rod 11 to move up, and the linkage rod 11 drives the sample positioning column 12 to move up. The sample positioning column 12 moves up along the inner wall of the guide sleeve strip 13, and the multiple sample positioning columns 12 slide synchronously from the inner wall of the guide sleeve strip 13, so that the multiple sample positioning columns 12 can approach the center point of the first infrared light penetration hole 14, so that the multiple sample positioning columns 12 begin to squeeze the test sample 18, so that the center point of the test sample 18 begins to maintain the same inclined line position with the center point of the first infrared light penetration hole 14, so that the test sample 18 can be synchronously positioned vertically by the multiple sample positioning columns 12. When the torque value sensed by the torque sensor 15 is the same as the torque value set by the controller 24 , the first reduction motor 16 is turned off by the controller 24 .

[0043] Step 3: When the sample is precisely positioned horizontally, the micro-electric cylinder 38 is started through the controller 24, and the micro-electric cylinder 38 pushes the pressure sensor 39 to move left, and the pressure sensor 39 drives the pressure strip 40 to move left, and the pressure strip 40 drives the sliding sleeve 35 to move left, and the sliding sleeve 35 slides left along the inner wall of the sliding frame 34. At the same time, the sliding sleeve 35 drives the positioning cover plate 36 to move left, and the detection sample plate 1 supports the sliding frame 34 to increase the stability of the sliding frame 34. In this way, the positioning cover plate 36 drives the second infrared light permeable hole 37 to squeeze on the right side of the detection sample 18, so that the center point of the second infrared light permeable hole 37 and the center point of the detection sample 18 maintain the same inclined line position. The squeezing force is sensed by the pressure sensor 39. When the pressure value sensed by the pressure sensor 39 is the same as the pressure value set by the controller 24, the micro-electric cylinder 38 is closed by the controller 24.

[0044] Step 4: During precise detection, the driving motor 29 is started by the controller 24, and the driving motor 29 drives the screw 27 to rotate, and the screw 27 drives the threaded sleeve 28 to move downward under the action of the thread transmission force, and at the same time, the threaded sleeve 28 drives the connecting column 30 to move downward, and the threaded sleeve 28 can slide down along the inner wall of the slide frame 26. At the same time, the connecting column 30 drives the proximity sensor 32 to move downward, and when the proximity sensor 32 can sense the sensing block 33, the detection distance sensor 31 is immediately turned on by the controller 24.

[0045] In this way, the detection distance sensor 31 can perform distance sensing on the left side of the detection sample 18, until the connecting column 30 moves downward to the position above the positioning distance sensor 25, and then the positioning distance sensor 25 performs distance sensing on the connecting column 30, so that the detection distance sensor 31 can perform multi-point distance sensing on the detection sample 18 at the position of the first infrared light through hole 14. When the distance value sensed by the detection distance sensor 31 is the same as the distance value set by the controller 24, the detection sample 18 at the position of the first infrared light through hole 14 does not have an offset problem. At the same time, when the distance value sensed by the positioning distance sensor 25 is the same as the distance set by the controller 24, the driving motor 29 is turned off by the controller 24, and the connecting column 30 is located below the first infrared light through hole 14, and the connecting column 30 will not block the first infrared light through hole 14. Then, the first infrared light through hole 14 is detected and irradiated by the Fourier infrared spectrometer, so that the spectrum detection operation can be realized on the detection sample 18.

[0046] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sample stage for a Fourier infrared spectrometer with precise angle adjustment, comprising a detection sample plate (1), the inner wall of the detection sample plate (1) being rotatably connected to a rotating shaft (2), and the outer wall of the rotating shaft (2) being fixedly connected to a pinion gear (3), characterized in that: The outer wall of the pinion (3) is provided with a synchronous vertical sample positioning mechanism; The synchronous vertical sample positioning mechanism comprises a large gear (4) meshingly arranged on the outer wall of the small gear (3); one side of the large gear (4) is rotatably connected to a positioning support ring (5), and the positioning support ring (5) is fixedly connected to the detection sample plate (1); the other side of the large gear (4) is rotatably connected to a limited rotation ring (6); the inner wall of the large gear (4) is fixedly connected to a linkage ring (7), and the linkage ring (7) is fixedly connected to the limited rotation ring (6); the detection sample plate (1) and the positioning support ring (5) are both rotatably connected to the linkage ring (7); The inner wall of the linkage ring (7) is fixedly connected to a plurality of concave strips (8), the inner wall of each concave strip (8) is fixedly connected to a push rod (9), the outer wall of the push rod (9) is rotatably connected to a sleeve push rod (10), the inner wall of the sleeve push rod (10) is rotatably connected to a linkage rod (11) at a position away from the push rod (9), a sample positioning column (12) is fixedly mounted on the top of the linkage rod (11), the outer wall of the sample positioning column (12) is slidably connected to a guide sleeve strip (13), and the guide sleeve strip (13) is fixedly connected to the detection sample plate (1); A first infrared light permeable hole (14) is provided inside the guide sleeve (13), and a torque sensor (15) is fixedly mounted on one end of the rotating shaft (2); A precise detection mechanism is provided on one side of the torque sensor (15); A transverse sample precision positioning mechanism is installed on the top of the detection sample plate (1).

2. The angle-precision adjustable Fourier transform infrared spectrometer sample stage according to claim 1, characterized in that: The plurality of concave strips (8) are arranged in a circular ring at equal intervals, and the vertical cross-section of the linkage ring (7) is in the shape of a circular ring; The plurality of sample positioning columns (12) are arranged in a circular shape and are equidistantly distributed.

3. The angle-precision adjustable Fourier transform infrared spectrometer sample stage according to claim 1, characterized in that: The sensing end of the torque sensor (15) is fixedly connected to a first reduction motor (16), and one side of the first reduction motor (16) is fixedly connected to a support block (17); The torque force sensor (15) is fixedly connected to the detection sample plate (1), and the support block (17) is fixedly connected to the detection sample plate (1).

4. The angle-precision adjustable Fourier transform infrared spectrometer sample stage according to claim 1, characterized in that: A detection sample (18) is slidably connected to one side of the first infrared light transparent hole (14); The bottom end of the detection sample plate (1) is fixedly connected to a concave rotating plate (19), the inner wall of the concave rotating plate (19) is fixedly connected to a linkage shaft (20), one end of the linkage shaft (20) is fixedly mounted with a second reduction motor (21), and the other end of the linkage shaft (20) is fixedly mounted with an angle sensor (22); A sleeve base (23) is rotatably connected to the outer wall of the linkage shaft (20) near its middle position, the second reduction motor (21) and the angle sensor (22) are both fixedly connected to the sleeve base (23), and a controller (24) is fixedly mounted on one side of the sleeve base (23).

5. The angle-precision adjustable Fourier infrared spectrometer sample stage according to claim 1, characterized in that: The precise placement detection mechanism comprises a positioning distance sensor (25) arranged on one side of the torque sensor (15); The positioning distance sensor (25) is fixedly connected to the detection sample plate (1); a sliding frame (26) fixedly connected to the detection sample plate (1) is provided on one side of the positioning distance sensor (25); and a screw rod (27) is rotatably connected to the inner wall of the sliding frame (26); A driving motor (29) is fixedly mounted on the top of the sliding frame (26), and the driving motor (29) is used to drive the screw rod (27) to rotate. The outer wall of the screw rod (27) is threadedly connected with a threaded sleeve (28), and the threaded sleeve (28) is slidably connected to the sliding frame (26); A connecting column (30) is fixedly mounted on one side of the threaded sleeve block (28); a detection distance sensor (31) is fixedly connected to the bottom end of the outer wall of the connecting column (30); a proximity sensor (32) is plugged into one end of the connecting column (30); a sensing block (33) is provided on one side of the proximity sensor (32); and the sensing block (33) is fixedly connected to the detection sample plate (1).

6. The angle-precision adjustable Fourier transform infrared spectrometer sample stage according to claim 5, characterized in that: The output end of the driving motor (29) is fixedly connected to the screw rod (27), and the outer wall of the threaded sleeve (28) and the inner wall of the sliding frame (26) are both smooth surfaces.

7. The angle-precision adjustable Fourier infrared spectrometer sample stage according to claim 5, characterized in that: The vertical cross-section of the sensing block (33) is rectangular, and the right side surface of the positioning distance sensor (25) and the left side surface of the sensing block (33) are arranged in parallel.

8. The angle-precision adjustable Fourier transform infrared spectrometer sample stage according to claim 1, characterized in that: The transverse sample precise positioning mechanism comprises a sliding frame (34) fixedly mounted on the top of the detection sample plate (1); The inner wall of the sliding frame (34) is slidably connected to a sliding sleeve (35), a positioning cover plate (36) is fixedly mounted on the bottom end of the sliding sleeve (35), a second infrared light permeable hole (37) is formed inside the positioning cover plate (36), and a micro electric cylinder (38) is fixedly connected to the upper surface of the sliding frame (34); A pressure sensor (39) is fixedly mounted on the output end of the micro electric cylinder (38), and a pressure strip (40) is fixedly connected to one side of the pressure sensor (39), and the pressure strip (40) is fixedly connected to the sliding sleeve block (35).

9. The angle-precision adjustable Fourier infrared spectrometer sample stage according to claim 8, characterized in that: The outer wall of the sliding sleeve (35) and the inner wall of the sliding frame (34) are both smooth surfaces, and the vertical cross-section of the second infrared light transmission hole (37) is circular.

10. The angle-precision adjustable Fourier infrared spectrometer sample stage according to claim 8, characterized in that: The cross-sectional shape of the pressure strip (40) is L-shaped, and the pressure strip (40) is slidably connected to the sliding frame (34).

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