Graphene fiber sample table for X-ray small-angle scatterometer
By setting up a magnetic fixing assembly on the graphene fiber sample table, the problems of inconvenience in picking and placement of samples and adjustment of tension are solved, and the convenient fixation and straight holding of samples are achieved to ensure the accuracy of the test results.
Patent Information
- Application Number
- CN202421421244.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing graphene fiber sample table is inconvenient when picking up and putting graphene fiber samples, and the tension of the sample cannot be adjusted, which affects the accuracy of the test results.
The graphene fiber sample is fixed by using a magnetic suction fixing assembly, the sample is pressed and fixed by the magnetic suction action of the magnetic suction block and the magnet block, and the tension of the sample is adjusted by translating the magnetic suction block to maintain straightness.
It realizes convenient pick-up and placement of graphene fiber samples and adjusts tension, ensuring the accuracy of test results.
Smart Images
Figure CN223078219U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring the orientation degree of graphene fibers, in particular to a graphene fiber sample stage for an X-ray small-angle scattering instrument. Background Art
[0002] Graphene gel fibers play an irreplaceable role in the fields of aerospace, missiles, ships, etc. due to their excellent properties, and have also been widely used in civil fields such as sports, chemical industry, and transportation. The internal micro-hole defects and dynamic changes in the crystalline orientation values of graphene fibers cause the fibers to be prone to breakage, which limits the wide application of graphene fiber materials. Therefore, in-situ quantitative characterization of the internal hole defects of graphene fibers and dynamic changes in the crystalline orientation values are of great significance for detecting the performance of graphene fibers.
[0003] Currently, an X-ray small-angle scattering instrument is usually used to test graphene fibers, and the graphene fibers are fixed on a sample stage during the test. An existing graphene fiber sample stage (as shown in Figure 1 , Figure 2 ) includes a bracket 1. Rotatable sample fixing member bodies 2 are arranged at intervals on the bracket. A placement notch 3 is provided on the sample fixing member body. The bottom surface of the placement notch is set as a plane, and this plane is the sample fixing surface 4. A front transmission hole 5 for transmitting X-rays is provided on the sample fixing surface. A pressing piece 6 is arranged above the front transmission hole. A rear transmission hole 7 for transmitting X-rays is provided on the pressing piece. When in use, a graphene fiber sample 8 is placed on the sample fixing surface and located between the front transmission hole and the rear transmission hole. Then, the pressing piece is covered on the graphene fiber sample. Finally, the pressing piece is fastened to the sample fixing surface as a whole through a screw 9, so as to press and fix the graphene fiber sample between the front transmission hole and the rear transmission hole. The existing graphene fiber sample stage has the following defects: (1) The graphene fiber sample is pressed and fixed between the front transmission hole and the rear transmission hole through the cooperation of the pressing piece and the screw, which makes the taking and placing of the graphene fiber sample very inconvenient and the efficiency is low; (2) The graphene fiber sample is prone to bending, and after being fastened by the screw, the tension of the graphene fiber sample cannot be adjusted to keep it straight, which will affect the test results. Summary of the Utility Model
[0004] The utility model is to solve the above problems existing in the existing graphene fiber sample stage of the prior art, and provides a graphene fiber sample stage for an X-ray small-angle scattering instrument, which has a simple structure, is convenient to use, is convenient for taking and placing a graphene fiber sample, and can adjust the tension of the graphene fiber sample to keep it straight.
[0005] To achieve the above object, the present utility model adopts the following technical solutions: A graphene fiber sample stage for an X-ray small angle scattering instrument of the present utility model includes a bracket, and rotatable sample fixing member bodies are provided at intervals on the bracket. A placement notch is provided on the sample fixing member body, and a transmission hole for transmitting X-rays is provided at the bottom of the placement notch. Magnetically attracting fixing assemblies capable of fixing graphene fiber samples are symmetrically provided on the inner wall of the transmission hole. The magnetically attracting fastener includes a magnet block and a magnetically attracting pressing block. A placement groove is provided on the inner wall of the transmission hole, and the placement groove is open on one side close to the transmission hole. The magnet block is fixed at the bottom of the placement groove, and the upper surface of the magnet block forms a graphene fiber sample placement surface for placing the graphene fiber sample. The magnetically attracting pressing block is arranged in the placement groove and can be magnetically attracted to the magnet block. The present utility model improves the structure of the existing graphene fiber sample stage, and fixes the graphene fiber sample by setting the magnetically attracting fixing assembly; both ends of the graphene fiber sample are placed on the graphene fiber sample placement surface, and then the magnetically attracting pressing block is lowered. Through the magnetic attraction between the magnetically attracting pressing block and the magnet block, the graphene fiber sample can be pressed and fixed between the magnetically attracting pressing block and the magnet block, making the taking and placing of the graphene fiber sample very convenient; at the same time, the graphene fiber sample can also be pulled by translating the magnetically attracting pressing block under the action of friction, so that the bent graphene fiber sample is tightened and kept straight to ensure the accuracy of the test results; the magnetically attracting pressing block can be an iron block.
[0006] Preferably, an overhead groove is provided at the bottom of the placement notch. The overhead groove is an open groove, the transmission hole is arranged at the bottom of the overhead groove, and the placement groove is arranged on the side walls on both sides of the overhead groove. The overhead groove can make the graphene fiber sample overhead, reduce the friction between the graphene fiber sample and the sample fixing member body, so as to facilitate pulling the graphene fiber sample to tighten it and keep it in a straight state; at the same time, it can also avoid blocking the penetration of X-rays.
[0007] Preferably, the longitudinal section of the placement groove is in an "I" shape. The wider part at the upper part of the placement groove forms a limiting sliding groove for the magnetically attracting pressing block. The magnetically attracting pressing block is located in the limiting sliding groove for the magnetically attracting pressing block. The narrower part in the middle of the placement groove forms a graphene fiber sample positioning groove for placing the graphene fiber sample. The wider part at the lower part of the placement groove forms a magnet block installation groove. A pressing protrusion adapted to the graphene fiber sample positioning groove protrudes downward from the bottom surface of the magnetically attracting pressing block. The magnet block is fixed in the magnet block installation groove, and the pressing protrusion and the magnet block are magnetically attracted to press the graphene fiber sample located between the pressing protrusion and the magnet block. The limiting sliding groove for the magnetically attracting pressing block is used for placing the magnetically attracting pressing block, playing a positioning and guiding role; the graphene fiber sample positioning groove is used for placing the graphene fiber sample, playing a positioning role. The end of the graphene fiber sample is placed into the graphene fiber sample positioning groove and placed flat on the graphene fiber sample placement surface, and is pressed by the pressing protrusion.
[0008] Preferably, a dial is provided on the top surface of the magnetic attraction pressing block. The dial facilitates the picking up, placing and moving of the magnetic attraction pressing block.
[0009] Preferably, the bottom surface of the placing notch is a plane.
[0010] Preferably, a stepping motor is provided on the bracket. One end of the sample fixing member body is rotatably connected to the bracket, and the other end of the sample fixing member body is fixedly connected to the output end of the stepping motor.
[0011] Therefore, the utility model has the following beneficial effects:
[0012] (1) By providing a magnetic attraction fixing assembly to fix the graphene fiber sample, the picking up and placing of the graphene fiber sample are very convenient;
[0013] (2) The graphene fiber sample can be pulled by translating the magnetic attraction pressing block under the action of friction force, so that the bent graphene fiber sample is tensioned to keep it straight, so as to ensure the accuracy of the test result. Description of the Drawings
[0014] Figure 1 is the front view of an existing graphene fiber sample stage.
[0015] Figure 2 is Figure 1 the enlarged view at A in
[0016] Figure 3 is the front view of the graphene fiber sample stage of the utility model.
[0017] Figure 4 is Figure 3 the enlarged view at B in
[0018] Figure 5 is the front view of the sample fixing member body.
[0019] Figure 6 is Figure 5 the top view of
[0020] Figure 7 is Figure 6 the sectional view taken along the C-C direction.
[0021] Figure 8 is the front view of the magnetic attraction pressing block.
[0022] In the figure: support 1, sample fixing part body 2, placing notch 3, sample fixing surface 4, front transmission hole 5, pressing piece 6, rear transmission hole 7, graphene fiber sample 8, screw 9, transmission hole 10, magnet block 11, magnetic attraction pressing block 12, placing groove 13, graphene fiber sample placing surface 14, overhead groove 15, magnetic attraction pressing block limiting sliding groove 16, graphene fiber sample positioning groove 17, magnet block installation groove 18, pressing protrusion 19, dialing block 20, stepping motor 21. Specific implementation mode
[0023] The present utility model will be further described below in conjunction with the accompanying drawings and specific implementation modes.
[0024] As Figure 3 shown, a graphene fiber sample stage for an X-ray small-angle scattering instrument includes a support 1. A sample fixing part body 2 is installed at intervals on the support. A stepping motor 21 is fixed on the support. One end of the sample fixing part body is rotationally connected to the support, and the other end of the sample fixing part body is fixedly connected to the output end of the stepping motor. A placing notch 3 is provided on the sample fixing part body. The bottom surface of the placing notch is a plane. An overhead groove 15 is provided at the bottom of the placing notch. The overhead groove is an open groove. A plurality of transmission holes 10 for transmitting X-rays are provided at intervals on the bottom of the overhead groove (as Figure 4 shown). Magnetic attraction fixing components capable of fixing the graphene fiber sample 8 are symmetrically provided on the inner walls of the transmission holes. The magnetic attraction fasteners include a magnet block 11 and a magnetic attraction pressing block 12. Placing grooves 13 are symmetrically provided on the side walls on both sides of the overhead groove. One side of the placing groove close to the transmission hole is open. The longitudinal section of the placing groove is in an "I" shape (as Figure 5 , Figure 6 , Figure 7 shown). The wider part at the upper part of the placing groove forms a magnetic attraction pressing block limiting sliding groove 16. The magnetic attraction pressing block is located in the magnetic attraction pressing block limiting sliding groove. A dialing block 20 is fixed on the top surface of the magnetic attraction pressing block. The narrower part in the middle of the placing groove forms a graphene fiber sample positioning groove 17 for placing the graphene fiber sample. The wider part at the lower part of the placing groove forms a magnet block installation groove 19. A pressing protrusion 19 adapted to the graphene fiber sample positioning groove protrudes downward from the bottom surface of the magnetic attraction pressing block (as Figure 8 shown). The magnet block is fixed in the magnet block installation groove. The upper surface of the magnet block forms a graphene fiber sample placing surface 14 for placing the graphene fiber sample. The pressing protrusion and the magnet block are magnetically attracted to press the graphene fiber sample located between the pressing protrusion and the magnet block.
[0025] The usage method of the present utility model is as follows: First, rotate the main body of the sample fixing member until the bottom surface of the placing notch faces upward and is horizontal, then place the two ends of the graphene fiber sample into the graphene fiber sample positioning groove and rest on the graphene fiber sample placing surface. Finally, place the magnetic attraction pressing block into the magnetic attraction pressing block limiting sliding groove, so that under the magnetic attraction of the pressing protrusion and the magnet block, the graphene fiber sample is pressed and fixed between the pressing protrusion and the magnet block. The graphene fiber sample is then fixed above the transmission hole. If the graphene fiber sample is bent, the graphene fiber sample can be tensioned by translating the magnetic attraction pressing block, so that the graphene fiber sample can be kept straight.
[0026] The above-described embodiments are only a preferred solution of the present utility model, and do not impose any form of limitation on the present utility model. There are other variants and modifications without exceeding the technical solutions described in the claims.
Claims
1. A graphene fiber sample stage for a small-angle X-ray scattering instrument, comprising a bracket (1), on which a rotatable sample fixing member body (2) is provided at intervals, a placement notch (3) is provided on the sample fixing member body, and a transmission hole (10) for transmitting X-rays is provided at the bottom of the placement notch, and is characterized in that, A magnetic fixing component capable of fixing a graphene fiber sample (8) is symmetrically arranged on the inner wall of the transmission hole, the magnetic fastener comprising a magnet block (11) and a magnetic clamping block (12), a placement groove (13) is arranged on the inner wall of the transmission hole, the placement groove is open on one side close to the transmission hole, the magnet block is fixed at the bottom of the placement groove, the upper surface of the magnet block forms a graphene fiber sample placement surface (14) for placing the graphene fiber sample, and the magnetic clamping block is arranged in the placement groove and can be magnetically attracted to the magnet block.
2. The graphene fiber sample stage for an X-ray small angle scattering instrument according to claim 1, characterized in that, An overhead slot (15) is provided at the bottom of the placement notch. The overhead slot is an open slot. The transmission hole is arranged at the slot bottom of the overhead slot. The placement slots are arranged on the side walls on both sides of the overhead slot.
3. The graphene fiber sample stage for an X-ray small angle scattering instrument according to claim 2, wherein The longitudinal section of the placement groove is in the shape of an "I" character, the wider portion of the upper portion of the placement groove forms a magnetic suction clamping block limiting slide groove (16), the magnetic suction clamping block is located in the magnetic suction clamping block limiting slide groove, the narrower portion in the middle of the placement groove forms a graphene fiber sample positioning groove (17) for placing the graphene fiber sample, the wider portion of the lower portion of the placement groove forms a magnet block mounting groove (18), the bottom surface of the magnetic suction clamping block protrudes downward to form a clamping protrusion (19) adapted to the graphene fiber sample positioning groove, the magnet block is fixed in the magnet block mounting groove, the clamping protrusion and the magnet block are magnetically attracted to each other to clamp the graphene fiber sample located between the clamping protrusion and the magnet block.
4. A graphene fiber sample stage for an X-ray small-angle scattering instrument according to claim 1 or 2 or 3, characterized in that, A shifting block (20) is provided on the top surface of the magnetic suction pressing block.
5. The graphene fiber sample stage for an X-ray small angle scattering instrument according to claim 1, wherein The bottom surface where the notch is placed is set to a flat surface.
6. The graphene fiber sample stage for an X-ray small-angle scattering instrument according to claim 1, wherein, A stepping motor (21) is arranged on the bracket, one end of the sample fixing body is rotatably connected to the bracket, and the other end of the sample fixing body is fixedly connected to the output end of the stepping motor.