Sample clamp of X-ray diffractometer

Abstract

The utility model relates to the technical field of diffraction testing, and discloses a sample clamp of an X-ray diffractometer, which comprises a carrying table and a base, an adjusting mechanism is arranged on the base, and a clamping mechanism is arranged on the carrying table. The four clamping blocks are manually expanded outwards, a to-be-tested sample is placed on the object placing table, then the pressing block is loosened, the springs are not extruded any more to drive the four clamping blocks to start to contract, and the sample is flexibly clamped, so that the sample clamp can be used for fixing the irregular or tiny sample; the application range and the sample testing efficiency of the clamp are improved; a screw rod is rotated by rotating a rotating sleeve, so that the screw rod moves in a supporting screw cylinder in a threaded manner, and a connecting screw cylinder moves in a threaded manner under the action of a thread, so that a carrying table can lift and move under the limiting and guiding of a limiting rod, the height of a sample clamp is flexibly adjusted, and the distance between a sample and an X-ray source is conveniently adjusted; the sample testing precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diffraction testing, in particular to a sample fixture of an X-ray diffractometer. Background Art

[0002] X-ray diffraction (XRD) is an important method for studying the crystal structure of materials and is widely used in materials science, geology, chemistry and other fields. When performing XRD analysis, the sample needs to be placed firmly on the sample stage of the diffractometer to ensure the accuracy of the test results.

[0003] The sample fixture of the X-ray diffractometer is one of the indispensable structures for testing as a carrier for holding the sample. The sample fixture imposes restrictions on the sample to a certain extent, such as the shape, size, surface quality, etc. of the sample. Due to the restrictions of the sample fixture, the sample needs to be processed to a certain extent.

[0004] However, the sample fixtures of X-ray diffractometers currently used can often only adapt to samples of specific shapes and sizes. It is difficult to fix irregular or tiny samples, and the required operations are complicated, which affects the test efficiency. Therefore, it is necessary to provide a sample fixture for X-ray diffractometer. Utility Model Content

[0005] The utility model aims to provide a sample fixture for an X-ray diffractometer to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sample fixture for an X-ray diffractometer, comprising a stage and a base, the base is provided with an adjustment mechanism, and the stage is provided with a clamping mechanism; the adjustment mechanism comprises a supporting screw barrel and a connecting screw barrel, a screw is provided between the supporting screw barrel and the connecting screw barrel, the two ends of the screw are respectively connected with the internal threads of the supporting screw barrel and the connecting screw barrel, and the middle end of the screw is fixed with a rotating sleeve; the clamping mechanism comprises a clamping block, a movable cavity is provided in the stage, a wedge-shaped groove is provided on the stage, and the The wedge-shaped groove is provided with a sliding groove connected with the movable cavity, and the bottom end of the clamping block is fixedly provided with a wedge block, and the wedge block is slidably connected with the wedge groove, and the bottom end of the wedge block is fixedly provided with a wedge-shaped slider, and the wedge slider is slidably connected with the sliding groove, and a sliding rod is fixedly provided in the wedge groove, and a spring is sleeved on the sliding rod, and the wedge block is slidably connected with the sliding rod, and a trapezoidal block is slidably connected in the movable cavity, and a wedge-shaped connecting block is fixedly provided at the bottom end of the trapezoidal block, and a sliding groove connected with the movable cavity is provided at one end of the carrier, and a wedge-shaped push rod is slidably connected in the sliding groove.

[0007] Preferably, the supporting screw barrel is fixedly arranged on the base, the connecting screw barrel is fixedly arranged on the bottom end of the carrier, and the fixing sleeve on the rotating sleeve is provided with an anti-slip sleeve.

[0008] Preferably, a limit rod is fixedly provided on the base, a limit block is provided on the top end of the limit rod, the limit rod slides through the carrier and is fixedly connected to the limit block.

[0009] Preferably, the spring is fixedly arranged between the wedge-shaped groove and the wedge-shaped block, the top end of the trapezoidal block is extrusion-slidingly connected to the wedge-shaped slider, and the wedge-shaped push rod is extrusion-slidingly connected to the bottom end of the trapezoidal block.

[0010] Preferably, both ends of the wedge-shaped push rod are fixedly provided with limit sliding blocks, the sliding groove is provided with a limit groove adapted to the limit sliding block, and the limit sliding block is slidably connected to the limit groove.

[0011] Preferably, one end of the wedge-shaped push rod extends to the outer end of the sliding groove, and a pressing block is fixedly provided on one end of the wedge-shaped push rod away from the sliding groove.

[0012] Preferably, a storage platform is fixedly provided on the carrier, and the storage platform is located between four clamping blocks.

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

[0014] 1) The sample fixture of the X-ray diffractometer manually expands the four clamping blocks outward to place the sample to be tested on the storage table, and then releases the pressing block, the spring is no longer squeezed and begins to rebound, so that the four clamping blocks begin to contract and flexibly clamp the sample, so that the sample fixture can fix irregular or tiny samples, thereby improving the application range of the fixture and the sample testing efficiency.

[0015] 2) The sample fixture of the X-ray diffractometer rotates the screw by rotating the rotating sleeve, so that the screw moves threadedly in the supporting screw barrel, and the connecting screw barrel moves threadedly under the action of the thread, so that the carrier can be raised and lowered under the limit guide of the limit rod, thereby realizing flexible adjustment of the height of the sample fixture, facilitating adjustment of the distance between the sample and the X-ray source, and improving the sample test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the sample fixture of the utility model;

[0017] Figure 2 It is a three-dimensional structural cross-sectional view of the adjustment mechanism of the utility model;

[0018] Figure 3 It is a top view of the three-dimensional structure of the carrier of the utility model;

[0019] Figure 4 It is a three-dimensional structural cross-sectional view of the platform of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the clamping mechanism of the utility model.

[0021] In the figure: 1. carrier; 2. base; 3. adjustment mechanism; 301. support screw barrel; 302. connecting screw barrel; 303. screw rod; 304. rotating sleeve; 305. anti-slip sleeve; 306. limit rod; 307. limit block; 4. clamping mechanism; 401. storage table; 402. wedge groove; 403. slide groove; 404. movable cavity; 405. trapezoidal block; 406. wedge-shaped slider; 407. wedge-shaped block; 408. clamping block; 409. slide rod; 410. spring; 411. wedge-shaped connecting block; 412. wedge-shaped push rod; 413. limit slider; 414. pressing block; 415. slide groove; 416. limit groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] Combination Figure 1-Figure 5 A sample fixture of an X-ray diffractometer includes a stage 1 and a base 2, an adjusting mechanism 3 is arranged on the base 2, and a clamping mechanism 4 is arranged on the stage 1.

[0025] See also Figure 2 It is further obtained that the adjustment mechanism 3 includes a supporting screw barrel 301 and a connecting screw barrel 302, a screw rod 303 is arranged between the supporting screw barrel 301 and the connecting screw barrel 302, the two ends of the screw rod 303 are respectively connected with the internal threads of the supporting screw barrel 301 and the connecting screw barrel 302, and the middle end of the screw rod 303 is fixedly sleeved with a rotating sleeve 304; the supporting screw barrel 301 is fixedly set on the base 2, the connecting screw barrel 302 is fixedly set at the bottom of the carrier 1, the rotating sleeve 304 is fixedly sleeved with an anti-slip sleeve 305, a limiting rod 306 is fixedly set on the base 2, a limiting block 307 is set at the top of the limiting rod 306, the limiting rod 306 slides through the carrier 1, and is fixedly connected with the limiting block 307.

[0026] Specifically, the screw 303 is rotated by rotating the rotating sleeve 304, so that the screw 303 is threadedly moved in the supporting screw barrel 301, and the connecting screw barrel 302 is threadedly moved under the action of the thread, so that the carrier 1 can be raised and lowered under the limit guide of the limit rod 306, thereby realizing flexible adjustment of the height of the sample fixture, facilitating adjustment of the distance between the sample and the X-ray source, and improving the sample testing accuracy.

[0027] See also Figure 3-Figure 5 , it is further obtained that the clamping mechanism 4 includes a clamping block 408, an active cavity 404 is provided in the carrier 1, a wedge-shaped groove 402 is provided on the carrier 1, a slide groove 403 connected to the active cavity 404 is provided in the wedge groove 402, a wedge block 407 is fixedly provided at the bottom end of the clamping block 408, the wedge block 407 is slidably connected to the wedge groove 402, a wedge slider 406 is fixedly provided at the bottom end of the wedge block 407, the wedge slider 406 is slidably connected to the slide groove 403, a slide rod 409 is fixedly provided in the wedge groove 402, a spring 410 is sleeved on the slide rod 409, the wedge block 407 is slidably connected to the slide rod 409, a trapezoidal block 405 is slidably connected in the active cavity 404, a wedge-shaped connecting block 411 is fixedly provided at the bottom end of the trapezoidal block 405, and one end of the carrier 1 is provided with a wedge connecting block 411 connected to the active cavity 404 The sliding groove 415 is connected to the sliding groove 415, and a wedge-shaped push rod 412 is slidably connected in the sliding groove 415; the spring 410 is fixedly arranged between the wedge-shaped groove 402 and the wedge-shaped block 407, the top of the trapezoidal block 405 is squeezed and slidably connected with the wedge-shaped slider 406, the wedge-shaped push rod 412 is squeezed and slidably connected with the bottom end of the trapezoidal block 405, both ends of the wedge-shaped push rod 412 are fixedly provided with a limit slider 413, a limit groove 416 adapted to the limit slider 413 is opened in the sliding groove 415, the limit slider 413 is slidably connected with the limit groove 416, one end of the wedge-shaped push rod 412 extends to the outer end of the sliding groove 415, and a pressing block 414 is fixedly arranged on the end of the wedge-shaped push rod 412 away from the sliding groove 415, and a storage platform 401 is fixedly arranged on the carrier 1, and the storage platform 401 is located between the four clamping blocks 408.

[0028] Specifically, the four clamping blocks 408 are manually expanded outward, the sample to be tested is placed on the storage table 401, and then the pressing block 414 is released, and the spring 410 is no longer squeezed and begins to rebound, so that the four clamping blocks 408 begin to contract and flexibly clamp the sample, so that the sample clamp can fix irregular or tiny samples, thereby improving the application range of the clamp and the sample testing efficiency.

[0029] In actual operation, the sample clamp can be adjusted to a height as required. When adjusting, the screw rod 303 is rotated by rotating the rotating sleeve 304, and the connecting screw barrel 302 can move under the action of the thread, so that the carrier 1 can be lifted and lowered under the limit guide of the limit rod 306, thereby realizing the height adjustment of the sample clamp.

[0030] Before clamping the sample, first press the pressing block 414 to make the wedge-shaped push rod 412 slide and squeeze the wedge-shaped connecting block 411. The wedge-shaped connecting block 411 drives the trapezoidal block 405 to be lifted by the wedge-shaped push rod 412. The trapezoidal block 405 slides upward and squeezes the four wedge-shaped sliders 406, so that the four wedge-shaped sliders 406 are squeezed and drive the wedge block 407 to slide along the slide bar 409. The spring 410 is squeezed and compressed, so that the four clamping blocks 408 expand outward. Then, the sample to be tested is placed on the placement table 401 on the carrier 1. After placement, release the pressing block 414, and the spring 410 is no longer squeezed and begins to rebound, so that the four clamping blocks 408 begin to shrink and flexibly clamp the sample.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sample holder for an X-ray diffractometer, comprising a stage (1) and a base (2), characterized in that: The base (2) is provided with an adjustment mechanism (3), and the carrier (1) is provided with a clamping mechanism (4); The adjusting mechanism (3) comprises a supporting screw barrel (301) and a connecting screw barrel (302), a screw rod (303) is arranged between the supporting screw barrel (301) and the connecting screw barrel (302), two ends of the screw rod (303) are respectively connected to the internal threads of the supporting screw barrel (301) and the connecting screw barrel (302), and a rotating sleeve (304) is arranged at the middle end of the screw rod (303); The clamping mechanism (4) comprises a clamping block (408), a movable cavity (404) is provided in the carrier (1), a wedge-shaped groove (402) is provided on the carrier (1), a slide groove (403) connected to the movable cavity (404) is provided in the wedge-shaped groove (402), a wedge-shaped block (407) is fixedly provided at the bottom end of the clamping block (408), the wedge-shaped block (407) is slidably connected to the wedge-shaped groove (402), a wedge-shaped slider (406) is fixedly provided at the bottom end of the wedge-shaped block (407), the wedge-shaped slider (406) is slidably connected to the slide groove (403), and the wedge-shaped slider (406) is slidably connected to the slide groove (403). 03) sliding connection, a sliding rod (409) is fixedly arranged in the wedge-shaped groove (402), a spring (410) is sleeved on the sliding rod (409), the wedge block (407) is slidingly connected to the sliding rod (409), a trapezoidal block (405) is slidingly connected in the movable cavity (404), a wedge-shaped connecting block (411) is fixedly arranged at the bottom end of the trapezoidal block (405), a sliding groove (415) connected to the movable cavity (404) is opened at one end of the carrier (1), and a wedge-shaped push rod (412) is slidingly connected in the sliding groove (415).

2. The sample holder for an X-ray diffractometer according to claim 1, characterized in that: The supporting screw barrel (301) is fixedly arranged on the base (2), the connecting screw barrel (302) is fixedly arranged on the bottom end of the carrier (1), and an anti-slip sleeve (305) is fixedly arranged on the rotating sleeve (304).

3. The sample holder for an X-ray diffractometer according to claim 1, characterized in that: A limiting rod (306) is fixedly arranged on the base (2), a limiting block (307) is arranged at the top end of the limiting rod (306), and the limiting rod (306) slides through the carrier (1) and is fixedly connected to the limiting block (307).

4. The sample holder for an X-ray diffractometer according to claim 1, characterized in that: The spring (410) is fixedly arranged between the wedge-shaped groove (402) and the wedge-shaped block (407), the top end of the trapezoidal block (405) is extrusion-slidingly connected to the wedge-shaped slider (406), and the wedge-shaped push rod (412) is extrusion-slidingly connected to the bottom end of the trapezoidal block (405).

5. The sample holder for an X-ray diffractometer according to claim 1, characterized in that: Limiting slide blocks (413) are fixedly provided at both ends of the wedge-shaped push rod (412), and limiting grooves (416) adapted to the limiting slide blocks (413) are provided in the sliding grooves (415), and the limiting slide blocks (413) are slidably connected to the limiting grooves (416).

6. The sample holder for an X-ray diffractometer according to claim 1, characterized in that: One end of the wedge-shaped push rod (412) extends to the outer end of the sliding groove (415), and a pressing block (414) is fixedly provided on one end of the wedge-shaped push rod (412) away from the sliding groove (415).

7. The sample holder for an X-ray diffractometer according to claim 1, characterized in that: A storage platform (401) is fixedly arranged on the carrier (1), and the storage platform (401) is located between four clamping blocks (408).

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