Small sample clamping tool for spectrum

Abstract

The utility model provides a small sample clamping tool for a spectrum. The small sample clamping tool comprises a left frame, a right frame in threaded connection with the left frame and clamping mechanisms located in the left frame and the right frame, the clamping mechanism comprises two clamping blocks arranged oppositely, a sliding shaft and a pull rod, and the pull rod penetrates through the left frame or the right frame to be in threaded connection with the clamping blocks and is used for pulling the two clamping blocks to be away from each other oppositely; the clamping blocks are connected with the sliding shaft in a sliding mode, the other end of the sliding shaft is fixed, the outer surface of the sliding shaft is sleeved with an elastic spring, and the elastic spring provides force for clamping the two clamping blocks towards the middle. A bottom plate is arranged above the two clamping blocks, the bottom plate and the groove in the upper side of the left frame are arranged in an embedded mode, and an excitation hole is formed in the center of the bottom plate in a penetrating mode; according to the sample clamping mechanism for the spectrum, the clamping mechanism is arranged, so that a sample can be flexibly clamped, and meanwhile, the application range of the sample clamping mechanism for the spectrum is greatly widened; on the other hand, the light leakage phenomenon in the spectrum excitation process is prevented by additionally arranging the bottom plate, and the stability of the spectrum test is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of spectrum analysis technology, especially a small sample clamping tool for spectrum. BACKGROUND

[0002] When performing spectrum analysis, a testing machine is one of the indispensable equipment; it determines the absorption or emission characteristics of different wavelengths of light of a substance, thereby analyzing the composition and content of the substance; however, the traditional spectrum testing machine has some limitations when processing some special small-diameter samples.

[0003] The traditional spectrum testing machine is usually designed to process standard-sized samples; for small-diameter samples, especially samples with a diameter smaller than the conventional size, the testing machine may not have a corresponding adaptation mechanism, making it difficult to correctly place and fix the sample; at the same time, due to the lack of a dedicated tool, the operator may encounter many inconveniences when clamping these small-diameter samples, increasing the difficulty of operation.

[0004] In spectrum analysis, the excitation hole is a key part for introducing excitation light. For small-diameter samples, the alignment and sealing of the excitation hole are particularly important. If the excitation hole part is not handled properly, light leakage is likely to occur, which will directly affect the intensity and stability of the spectrum signal, and thus affect the final detection result.

[0005] Based on this, the existing spectrum testing machine does not have a dedicated custom tool for some special small-diameter samples, and there are still problems of inconvenient clamping of samples and easy light leakage at the excitation hole part. SUMMARY

[0006] In view of the defects and deficiencies in the prior art, the utility model provides a small sample clamping tool for spectrum, which realizes stable clamping, expands the application range of the clamping tool, and avoids light leakage; solves the problems of inconvenient clamping of small samples and easy light leakage at the excitation hole part.

[0007] The utility model discloses a small sample clamping tool for spectrum adopts the technical scheme of: including left frame, right frame with left frame screw connection and the clamping mechanism in left, right frame interior, the clamping mechanism includes two opposite setting clamping block, sliding axle and pull rod, and the pull rod is through left frame or right frame and clamping block screw connection for pulling two clamping blocks away from each other, clamping block and sliding axle sliding connection, the other end of sliding axle is fixed, and the outer surface of sliding axle is equipped with elastic spring, and the elastic spring provides the force of clamping to the middle for two clamping blocks, the top of two clamping blocks is equipped with bottom plate, and bottom plate and the recess of left frame upper side are embedded, and the center of bottom plate is equipped with excitation hole.

[0008] Specific, the right frame is equipped with third positioning hole on both sides, the third positioning hole is connected with the first threaded hole for fixing the left and right frame;

[0009] Specific, the left and right frame is equipped with first positioning hole and second positioning hole on the opposite plane;

[0010] Specific, one end of the sliding shaft is connected with the first positioning hole, and the other end is connected with the clamping block through the sliding hole;

[0011] Specific, the upper side of the two clamping blocks is equipped with dovetail groove, and the dovetail groove is detachably connected with the clamping block;

[0012] Specific, the clamping block is located between the two clamping blocks, and the clamping arc surface is in contact with the sample;

[0013] Specific, the pull rod includes a hand wheel located outside the two frames, a threaded end passing through the second positioning hole and connected with the third threaded hole;

[0014] Specific, the hole diameter of the excitation hole of the bottom plate is equal to the diameter of the sample;

[0015] Specific, the bottom plate is connected with the second threaded hole in the groove.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The utility model discloses a clamping mechanism can be realized to the flexible clamping of sample, wherein the clamping block is convenient to replace, can adapt to the small size of special-shaped sample, greatly improves the application scope of the sample clamping mechanism for spectrum, on the other hand, the utility model discloses a bottom cover plate (i.e. bottom plate) is added to prevent the light leakage phenomenon during the spectrum excitation, and the bottom plate is positioned to the sample first, avoids the offset of the sample, improves the stability of the spectrum test. ACCURACY OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the inside of the small sample clamping tool for spectrum of the utility model;

[0019] Figure 2 It is the structure schematic diagram of the whole of the small sample clamping tool for spectrum of the utility model;

[0020] Figure 3 It is the structure schematic diagram of the left frame and the right frame of the utility model;

[0021] Figure 4 It is the structure enlarged view of the clamping block of the utility model;

[0022] Figure 5 It is the structure enlarged view of the bottom plate of the utility model;

[0023] Figure 6 is the structure enlarged view of the pull rod.

[0024] In the figure: 1-left frame, 11-first positioning hole, 12-second positioning hole, 13-first threaded hole, 14-second threaded hole, 2-right frame, 21-third positioning hole, 3-clamping block, 31-dovetail groove, 32-third threaded hole, 33-sliding hole, 4-sliding shaft, 5-elastic spring, 6-clamping block, 61-clamping camber, 7-pull rod, 71-hand wheel, 72-threaded end, 8-bottom plate, 81-activation hole, 9-first nut. DETAILED DESCRIPTION

[0025] In order to better understand the technical means and effect of the utility model, the following will be combined with the preferred embodiments to further illustrate the utility model. The following preferred embodiments are based on the technology of the utility model, and detailed implementation modes and operation steps are given, but the protection scope of the utility model is not limited to the following examples.

[0026] In order to better understand the content of the utility model, the direction is indicated and limited here: with Figure 3 As the limited reference, the longer frame is the left side, that is, the left frame, and the shorter frame is the right side, that is, the right frame. In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "setting", "opening", "installing", "connecting" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. It can be directly connected, or it can be indirectly connected. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Please refer to Figures 1-6The utility model discloses a small sample clamping tool for spectrum includes left, right frame and the clamping mechanism of frame inside, specifically, left frame 1 is connected with right frame 2 screw thread, and the plane of two frames is symmetrically provided with first positioning hole 11 and second positioning hole 12, the clamping mechanism includes sliding axle 4, pull rod 7 and two oppositely arranged clamping blocks 3, the upper side of two clamping blocks 3 is opposite recessed with dovetail groove 31, and dovetail groove 31 is cooperated with the clamping block 6 between two clamping blocks, and the clamping arc surface of clamping block is contacted and clamped with sample, one end of sliding axle 4 is connected with first positioning hole 11 interference, and the other end passes through sliding hole and is slidably connected with clamping block, and the outer surface of sliding axle 4 is equipped with elastic spring 5, and elastic spring 5 is extruded, and provides the force of clamping to the middle for clamping block 3, so that the sample is clamped, and pull rod 7 includes hand wheel 71 located outside the frame and threaded end 72 passing through second positioning hole 12 and being connected with third threaded hole cooperation, and pull rod 7 can pull two clamping blocks to approach or move away, and then put in sample, and after loosening pull rod 7, under the action of elastic spring 5, the sample is fixed.

[0028] In order to avoid the light leakage phenomenon in the spectrum excitation process, a bottom plate 8 is additionally arranged above the two clamping blocks, the bottom plate 8 is embedded in the groove on the upper side of the left frame, and is fixed in cooperation with the second threaded hole 14 in the groove; the center of the bottom plate is provided with an excitation hole 81 for positioning the sample.

[0029] In the sample installation process in the utility model, the sample should be inserted into the excitation hole 81 of the bottom plate first, then the sample is placed upside down, and then the clamping mechanism is used to clamp and fix the sample; the utility model first positions the sample and then pulls the device to clamp, which can effectively prevent the sample from shifting.

[0030] Further, the third positioning hole 21 is provided on both sides of the right frame 2, the first threaded hole 13 is provided on the left frame 1 at the connection with the right frame, the first threaded hole 13 cooperates with the third positioning hole 21 to realize the fixed connection of the left and right frames, and the screw passing through the third positioning hole is limited by the first nut 9.

[0031] As Figure 3 , the second positioning hole 12 is located between the two first positioning holes 11; the utility model does not limit the number of first positioning holes and second positioning holes, and can achieve the purpose of stable clamping of the sample.

[0032] In the utility model, the aperture of the excitation hole 81 of the bottom plate is equal to the diameter of the sample, which prevents the light leakage phenomenon in the spectrum excitation process; correspondingly, in other embodiments, the size of the laser hole can be adaptively changed according to the size of the sample, that is, the bottom plate can be replaced according to different laser holes.

[0033] In other embodiments of the utility model, the clamping block 6 is detachably connected, can make adaptive replacement according to the shape and size of sample, its clamping camber can be replaced with plane, sawtooth surface, bending surface etc., convenient to apply to small sample of special shape.

[0034] The utility model can have other forms of embodiment according to above device, and do not enumerate one by one again. Therefore, any skilled person in the art, without departing from the technical scheme range of the utility model, according to the technical essence of the utility model, any simple modification, equivalent change and modification of above embodiment, all still belong to the range of the technical scheme of the utility model.

Claims

1. A small sample holder for spectroscopy, characterized in that, The utility model provides a left frame (1), right frame (2) and clamping mechanism in left, right frame screw connection with left frame, it includes two opposite clamping block (3), sliding shaft (4) and pull rod (7), pull rod (7) is threaded with clamping block and passes through left frame or right frame, the clamping block is slidably connected with sliding shaft (4), the other end of sliding shaft is fixed, and the outer surface of sliding shaft is equipped with elastic spring (5), and elastic spring provides the force that two clamping blocks (3) are clamped to the middle, the top of two clamping blocks is equipped with bottom plate (8), bottom plate (8) is embedded with recess groove and is set up on the upper side of left frame, and the center of bottom plate is equipped with exciting hole (81).

2. A small sample holder for spectroscopy as claimed in claim 1, characterized in that The both sides of right frame (2) are equipped with third positioning hole (21), and third positioning hole (21) is connected with first threaded hole (13) to fix left and right frames.

3. A small sample holder for spectroscopy as claimed in claim 1, characterized in that The opposite plane of left and right frames is symmetrically equipped with first positioning hole (11) and second positioning hole (12).

4. A small sample holder for spectroscopy as claimed in claim 3, characterized in that The one end of sliding shaft (4) is interference connected with first positioning hole (11), and the other end is slidably connected with clamping block through sliding hole (33).

5. A small sample holder for spectroscopy as claimed in claim 1, characterized in that The upper side of two clamping blocks (3) is oppositely concave and equipped with dovetail groove (31), and dovetail groove (31) is detachably connected with clamping block (6).

6. A small sample holder for spectroscopy as claimed in claim 5, characterized in that Clamping block (6) is located between two clamping blocks, and the clamping arc surface contacts and clamps the sample.

7. A small sample holder for spectroscopy as claimed in claim 3, characterized in that Pull rod (7) includes hand wheel (71) outside two frames and threaded end (72) through second positioning hole (12) and connected with third threaded hole (32).

8. A small sample holder for spectroscopy as claimed in claim 1, characterized in that The aperture of exciting hole (81) of bottom plate is equal to the diameter of sample.

9. A small sample holder for spectroscopy as claimed in claim 1, characterized in that Bottom plate (8) is screw connected with second threaded hole (14) in recess groove.

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