Microfilament sample preparation device and microfilament sample preparation method

Abstract

The invention provides a micro-filament sample preparation device and a micro-filament sample preparation method, and relates to the technical field of micro-filaments. The fine filament sample preparation device comprises a first winding piece, a second winding piece and a bearing assembly, the first winding piece and the second winding piece are arranged in a spaced mode in the first direction, and a first containing groove is formed in the side, back to the second winding piece, of the first winding piece in the first direction; a second containing groove is formed in the side, back to the first winding piece, of the second winding piece in the first direction, and the first containing groove and the second containing groove are both used for winding fine wires. The bearing assembly comprises a bearing face, the bearing face is perpendicular to the first direction, the bearing face is located on the side, back to the first winding piece, of the second winding piece, and the bearing face is used for bearing a sample cup. The device and the method can meet the requirements of sample preparation of microfilaments such as bonding wires and the like.

Description

Technical Field

[0001] The present application relates to the field of micro-filament technology, and in particular to a micro-filament sample preparation device and a micro-filament sample preparation method. Background Art

[0002] Microwire metallographic specimens and microstructure observation specimens are essential specimens used to observe microstructure, grain size and distribution and other microscopic features of microwires under an optical microscope or electron microscope. The preparation process can be divided into sampling, inlaying, grinding and polishing, cleaning, corrosion and other steps in sequence. The quality of the prepared specimens plays a vital role in the quality control and performance optimization of microwire products, as shown below.

[0003] By preparing microstructure observation samples, the internal structure of microfilaments can be intuitively observed, including characteristics such as grain size, shape, distribution, and grain boundaries; by comparing the microstructures of samples prepared in different batches or under different process conditions, the consistency and stability of microfilaments can be evaluated; after understanding the microstructure characteristics of microfilaments, their performance can be optimized. For example, by adjusting parameters such as material composition and heat treatment process, the grain morphology and distribution of microfilaments can be improved, thereby improving their mechanical properties, electrical conductivity or corrosion resistance.

[0004] As the diameter of micro-wires gradually decreases, the preparation of micro-wire samples becomes more difficult. The first difficulty is sampling. Since the diameter of commonly used micro-wires is basically around 20 microns, the wire diameter is too small to be fixed. During the sample mounting stage, due to the difficulty in clamping, it is difficult to ensure that the axial or radial section of the micro-wire is parallel to the grinding surface, and the randomness of the sample mounting is relatively large. During the grinding stage, due to the uncertainty of the sample position when the micro-wire is mounted, there is a greater risk of wearing out the area to be observed. In other words, the existing micro-wire sample preparation method is difficult to meet the needs of micro-wire sample preparation. Summary of the invention

[0005] In view of this, the present application provides a micro-filament sample preparation device and a micro-filament sample preparation method to solve the problem that the existing sample preparation method is difficult to meet the needs of sample preparation.

[0006] According to one aspect of the present application, a micro-filament sample preparation device is provided, the micro-filament sample preparation device comprising a first winding member, a second winding member and a supporting assembly, the first winding member and the second winding member are arranged at intervals along a first direction, a first receiving groove is formed on a side of the first winding member facing away from the second winding member in the first direction, a second receiving groove is formed on a side of the second winding member facing away from the first winding member in the first direction, and the first receiving groove and the second receiving groove are both used for winding micro-filaments;

[0007] The supporting assembly comprises a supporting surface, the supporting surface is perpendicular to the first direction, the supporting surface is located on a side of the second winding member facing away from the first winding member, and the supporting surface is used to support the sample cup.

[0008] Preferably, the sample cup comprises two open parts;

[0009] The supporting assembly includes two supporting members, the two supporting members correspond to two opening members respectively, the supporting members can support the corresponding opening members, and the two supporting members can approach or move away from each other in a second direction, and the second direction is perpendicular to the first direction.

[0010] Preferably, the supporting surface comprises two supporting parts;

[0011] The supporting member includes a supporting portion and a surrounding portion, the supporting portion is connected to the side of the surrounding portion facing away from the first winding member in the first direction, the supporting portion is located on the side of the supporting portion facing the first winding member in the first direction, and the two surrounding portions in the two supporting members can abut against each other.

[0012] Preferably, the microfilament sample preparation device further comprises a base and two sliding members, the two supporting members are respectively fixed on the two sliding members, and the sliding members are slidably connected to the base so that the sliding members can move on the base along the second direction.

[0013] Preferably, a sliding groove is formed on the base, the sliding groove extends along the second direction, and part of the sliding member is located in the sliding groove and can slide in the sliding groove.

[0014] Preferably, the microfilament sample preparation device comprises two support members, the two support members are arranged at intervals along a third direction, and the third direction is perpendicular to a plane defined by the first direction and the second direction;

[0015] The support member includes a first placement hole and a second placement hole, the first placement hole and the second placement hole are spaced apart along the first direction, the first winding member passes through two of the first placement holes, and the second winding member passes through two of the second placement holes.

[0016] Preferably, the diameter of the microfilament is d;

[0017] The dimension of the first receiving groove in the third direction is a, wherein 3d≤a≤5d;

[0018] The dimension of the second receiving groove in the third direction is b, wherein 3d≤b≤5d.

[0019] Preferably, a connecting hole is formed on the support member, the connecting hole extends along the first direction, the first placement hole is connected to the connecting hole, and the size of the first placement hole in the first direction is larger than the size of the first winding member in the first direction;

[0020] An elastic member is arranged in the connecting hole, and one end of the elastic member is in contact with the first winding member.

[0021] Preferably, two mounting holes are provided on the base, the two mounting holes are spaced apart along the third direction, and the two supporting members are respectively inserted into the two mounting holes.

[0022] Preferably, the sliding groove comprises a first groove portion and a second groove portion, the first groove portion and the second groove portion both extend along the second direction, and a dimension of the first groove portion in the third direction is smaller than a dimension of the second groove portion in the third direction;

[0023] The sliding member includes a first sliding portion and a second sliding portion, the first sliding portion has a smaller dimension in the third direction than the second sliding portion, the second sliding portion is disposed in the second groove portion, and a portion of the first sliding portion is located in the first groove portion.

[0024] According to another aspect of the present application, a microfilament sample preparation method is provided, the microfilament sample preparation method is applied to the above-mentioned microfilament sample preparation device, and the microfilament sample preparation method comprises:

[0025] S1, winding the microfilament on the first winding member and the second winding member through the first receiving groove and the second receiving groove, and the microfilament is wound multiple times;

[0026] S2, spirally winding the microfilament on a portion of the microfilament located between the first winding member and the second winding member with the first direction as an axial direction;

[0027] S3, placing the two opening parts of the sample cup on the two supporting parts respectively, and the two supporting parts approach each other along the second direction so that the two opening parts abut against each other;

[0028] S4, placing the sample cup on the supporting surface, injecting a mounting liquid into the sample cup, and allowing the mounting liquid to solidify to form an initial sample;

[0029] S5. Separating the initial sample from the sample cup, and grinding and polishing the initial sample to form an observation sample.

[0030] When using the microfilament sample preparation device of the present application to prepare a microfilament sample, firstly, the microfilament is wound on the first winding member and the second winding member through the first receiving groove and the second receiving groove, and the microfilament is wound multiple times; the microfilament is spirally wound on the portion of the microfilament located between the first winding member and the second winding member with the first direction as the axial direction; then the sample cup is placed on the supporting surface, and the embedding liquid is injected into the sample cup, and the embedding liquid solidifies to form an initial sample; finally, the initial sample is separated from the sample cup, and the initial sample is ground and polished to form an observation sample. The microfilament sample preparation device fixes the microfilament through the first receiving groove on the first winding member and the second receiving groove on the second winding member, which improves the convenience of fixing the microfilament sample. At the same time, by combining the first winding member and the second winding member with the above-mentioned winding method, the radial cross-section of the portion of the microfilament located between the first winding member and the second winding member is parallel to the top surface of the initial sample, and the portion of the microfilament located in the second receiving groove is coated with the embedding liquid, and the axial direction of the portion of the microfilament located in the second receiving groove is parallel to the bottom surface of the initial sample, thereby reducing the randomness of the embedding. Since the microfilament is fixed by the first winding member and the second winding member, the position of the microfilament can be determined, and the multi-turn winding method reduces the risk of wearing out the area to be observed. In this way, the microfilament sample preparation device of the present application is used to prepare samples of microfilaments such as bonding wires, thereby meeting the needs of microfilament sample preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram showing the three-dimensional structure of a microfilament sample preparation device according to an embodiment of the present invention;

[0033] Figure 2 A schematic plan view showing the structure of a micro-filament sample preparation device according to an embodiment of the present invention;

[0034] Figure 3 Show Figure 2 A cross-sectional view of the microfilament sample preparation device obtained by cutting along A-A';

[0035] Figure 4 A diagram showing the relative positions of the microfilament, the first winding member, the second winding member and the sample cup after the microfilament winding is completed;

[0036] Figure 5 A schematic diagram of the top surface of the observed sample is shown;

[0037] Figure 6 A schematic diagram of the bottom surface of the observed sample is shown.

[0038] Icons: 1-first winding member; 11-first accommodating groove; 2-second winding member; 21-second accommodating groove; 3-supporting assembly; 31-supporting member; 311-supporting portion; 312-enclosing portion; 3121-recess; 4-base; 41-sliding groove; 5-sliding member; 51-connecting portion; 52-first sliding portion; 53-second sliding portion; 6-supporting member; 61-first mounting hole; 62-connecting hole; 7-elastic member; 81-fine filament; 82-sample cup; 9-inlay portion; S1-supporting surface; S11-supporting portion; L1-first direction; L2-second direction; L3-third direction. DETAILED DESCRIPTION

[0039] The following will be combined Figures 1 to 4 The microfilament sample preparation device of the present application is described. Figures 1 to 4 In the embodiment, the first direction L1, the second direction L2 and the third direction L3 are perpendicular to each other.

[0040] like Figures 1 to 3 As shown, the micro-filament sample preparation device includes a first winding member 1, a second winding member 2 and a supporting assembly 3. The first winding member 1 and the second winding member 2 are arranged at intervals along the first direction L1. The first winding member 1 is formed with a first accommodating groove 11 on a side of the first winding member 1 facing away from the second winding member 2 in the first direction L1, and the second winding member 2 is formed with a second accommodating groove 21 on a side of the first winding member 2 facing away from the first winding member 1 in the first direction L1. The first accommodating groove 11 and the second accommodating groove 21 are both used for winding the micro-filament 81; the supporting assembly 3 includes a supporting surface S1, the supporting surface S1 is perpendicular to the first direction L1, the supporting surface S1 is located on a side of the second winding member 2 facing away from the first winding member 1, and the supporting surface S1 is used to support the sample cup 82.

[0041] When using the microfilament sample preparation device of the present application to prepare a microfilament 81 sample, firstly, the microfilament 81 is wound on the first winding member 1 and the second winding member 2 through the first receiving groove 11 and the second receiving groove 21, and the microfilament 81 is wound multiple times; then, the microfilament 81 is spirally wound on the part of the microfilament 81 located between the first winding member 1 and the second winding member 2 with the first direction L1 as the axial direction, and then the sample cup 82 is placed on the supporting surface S1, and the embedding liquid is injected into the sample cup 82. The embedding liquid solidifies to form an initial sample, and the initial sample includes an embedding portion 9 formed by the solidification of the embedding liquid and a microfilament 81 embedded in the embedding portion 9; finally, the initial sample is separated from the sample cup 82, and the initial sample is ground and polished to form an observation sample. The microfilament sample preparation device fixes the microfilament 81 through the first receiving groove 11 on the first winding member 1 and the second receiving groove 21 on the second winding member 2, thereby improving the convenience of fixing the microfilament 81 sample. At the same time, by cooperating the first winding member 1 and the second winding member 2 with the above-mentioned winding method, the radial cross section of the part of the microfilament 81 located between the first winding member 1 and the second winding member 2 is parallel to the top surface of the initial sample, and the part of the microfilament 81 located in the second receiving groove 21 is coated with the embedding liquid, and the axial direction of the part of the microfilament 81 located in the second receiving groove 21 is parallel to the bottom surface of the initial sample, thereby reducing the randomness of the embedding. Since the microfilament 81 is fixed by the first winding member 1 and the second winding member 2, the position of the microfilament 81 can be determined, and the multi-turn winding method reduces the risk of wearing out the area to be observed. In this way, the microfilament 81 sample is prepared by the microfilament sample preparation device of the present application, thereby meeting the needs of microfilament 81 sample preparation.

[0042] Preferably, the number of winding turns of the microfilament 81 is greater than or equal to 20 turns.

[0043] Optionally, the micro-wire may be a micro-metal wire with a diameter less than 50 micrometers, such as a bonding wire.

[0044] Further, the diameter of the fine filament 81 is d; the dimension of the first receiving groove 11 in the third direction L3 is a, where 3d≤a≤5d; the dimension of the second receiving groove 21 in the third direction L3 is b, where 3d≤b≤5d, so that the first receiving groove 11 and the second receiving groove 21 can meet the winding requirements of the fine filament 81. Preferably, the dimension of the first receiving groove 11 in the third direction L3 and the dimension of the second receiving groove 21 in the third direction L3 are 0.1 mm.

[0045] Optionally, the first winding member 1 and the second winding member 2 are rod-shaped structures, and the first winding member 1 and the second winding member 2 can be made of materials such as metal, rubber or plastic.

[0046] In addition, the sample cup 82 includes two open parts, and the shapes of the two open parts are similar to those of the support member 31. When the two open parts are in contact, a cylindrical structure with an opening at the upper end can be formed, and the embedding liquid can be injected into the sample cup 82 through the opening at the upper end. The sample cup 82 can be made of rubber material to facilitate separation of the sample cup 82 from the initial sample. At the same time, the sample cup 82 cooperates with the support component 3 to prepare the sample, which can extend the service life of the support component 3.

[0047] like Figure 1 and Figure 2 As shown, the support assembly 3 includes two support members 31, and the two support members 31 correspond to the two open members respectively. The support members 31 support the corresponding open members, and the two support members 31 can approach or move away from each other in the second direction L2, thereby driving the two open members of the sample cup 82 to approach or move away from each other in the second direction L2. In this way, when the microfilament 81 is wound, the two support members 31 are separated to avoid the support members 31 and the open members from interfering with the winding of the microfilament 81. After the winding of the microfilament 81 is completed, the two support members 31 abut against each other, so that the two open members abut against each other, so that the embedding liquid can be injected into the sample cup 82, thereby completing the embedding of the sample.

[0048] It should be noted that when the embedding liquid is injected into the sample cup 82, the liquid level of the embedding liquid needs to be high enough to allow the embedding liquid to immerse the portion of the microfilament 81 wound on the microfilament 81 between the first winding member 1 and the second winding member 2 into the embedding liquid, so as to ensure that the portion of the microfilament 81 wound on the microfilament 81 between the first winding member 1 and the second winding member 2 is covered by the embedding portion 9 formed by the solidification of the embedding liquid.

[0049] Furthermore, if Figure 1 As shown, the supporting surface S1 includes two supporting parts S11, and the supporting member 31 includes a supporting portion 311 and a surrounding portion 312. The supporting portion 311 can be a semicircular plate, and the surrounding portion 312 can be an arc-shaped plate. The supporting portion 311 and the surrounding portion 312 are opposite to the side of the first winding member 1 in the first direction L1 ( Figure 1 The supporting portion S11 is located on the side of the supporting portion 311 facing the first winding member 1 in the first direction L1, that is, the supporting portion S11 is located on the surface of the supporting portion 311 facing the first winding member 1, and the two surfaces of the two supporting portions 311 facing the first winding member 1 constitute the supporting surface S1. The two surrounding portions 312 in the two supporting members 31 can abut. When preparing the microfilament 81 sample, the two open members are supported on the two supporting portions 311 respectively, and the two surrounding portions 312 abut against each other, and the two open members abut against each other, so as to facilitate the injection of the embedding liquid.

[0050] Optionally, the two supporting portions 311 may abut against each other or have a certain gap. Preferably, there is a certain gap between the two supporting portions 311 to facilitate removing the sample cup 82 from the supporting assembly.

[0051] In addition, two notches 3121 are formed on the surrounding part 312, and the notches 3121 on the two surrounding parts 312 correspond to each other. When the two surrounding parts 312 abut, the notch 3121 on one surrounding part 312 and the corresponding notch 3121 on the other surrounding part 312 enclose a circular space. The two surrounding parts 312 enclose two circular spaces for the second winding member 2 to pass through. Two notches are formed on the open part of the sample cup 82, and the notches on the two open parts correspond to each other. When the two open parts abut, the notch on one open part and the corresponding notch on the other open part enclose a circular space. The two open parts enclose two circular spaces for the second winding member 2 to pass through.

[0052] In the embodiments of the present application, Figure 1 , Figure 2 and Figure 3 As shown, the micro-filament sample preparation device also includes a base 4 and two sliding members 5. The two supporting members 31 are respectively fixed on the two sliding members 5. The sliding members 5 are slidably connected to the base 4 so that the sliding member 5 can move along the second direction L2 on the base 4, thereby driving the two supporting members 31 to move along the second direction L2.

[0053] Furthermore, a sliding groove 41 is formed on the base 4 , and the sliding groove 41 extends along the second direction L2 . Part of the sliding member 5 is located in the sliding groove 41 and can slide in the sliding groove 41 , so that the two supporting members 31 can abut or separate.

[0054] In addition, both ends of the sliding groove 41 in the second direction L2 are open, so that the sliding member 5 can be removed from the base 4 .

[0055] Preferably, the sliding member 5 includes a connecting portion 51, a first sliding portion 52 and a second sliding portion 53. The connecting portion 51, the first sliding portion 52 and the second sliding portion 53 may all be rectangular parallelepiped structures. The connecting portion 51 extends along the second direction L2, the first sliding portion 52 extends along the first direction L1, one end of the connecting portion 51 is connected to the middle of the first sliding portion 52, the other end of the connecting portion 51 is connected to the surrounding portion 312 of the supporting member 31, the second sliding portion 53 is connected to the bottom of the first sliding portion 52, and the size of the second sliding portion 53 in the third direction L3 is larger than the size of the first sliding portion 52 in the third direction L3. The sliding groove 41 includes a first groove portion and a second groove portion that are connected, the first groove portion and the second groove portion both extend along the second direction L2, the size of the first groove portion in the third direction L3 is smaller than the size of the second groove portion in the third direction L3, and the second groove portion is located at the lower side of the first groove portion. The second sliding portion 53 is arranged in the second groove portion, and part of the first sliding portion 52 is located in the first groove portion, so that the sliding member 5 can move along the second direction L2.

[0056] Optionally, the form of sliding connection between the sliding member 5 and the base 4 is not limited thereto. For example, the base 4 may be provided with a protrusion extending along the second direction L2, and a groove is formed at the bottom of the sliding member 5, and part of the protrusion is located in the groove.

[0057] In the embodiments of the present application, Figure 1 and Figure 3 As shown, the microfilament sample preparation device includes two support members 6, the two support members 6 are arranged at intervals along the third direction L3, the base 4 is provided with two mounting holes, the two mounting holes are arranged at intervals along the third direction L3, and the two support members 6 are respectively inserted into the two mounting holes. In this way, the support members 6 are fixed by plugging, which can facilitate the installation of the support members 6 on the base 4 or removal from the base 4.

[0058] Furthermore, the support member 6 includes a first placement hole 61 and a second placement hole, and the first placement hole 61 and the second placement hole are arranged at intervals along the first direction L1. The first winding member 1 passes through the two first placement holes 61, and the second winding member 2 passes through the two second placement holes, thereby realizing the installation of the first winding member 1 and the second winding member 2 through the two support members 6.

[0059] like Figure 3As shown, a connection hole 62 is provided on the support member 6, and the connection hole 62 extends along the first direction L1. The first placement hole 61 is connected to the connection hole 62, and the size of the first placement hole 61 in the first direction L1 is larger than the size of the first winding member 1 in the first direction L1; an elastic member 7 is provided in the connection hole 62, and the elastic member 7 abuts against the first winding member 1. After the microfilament 81 is wound on the first winding member 1 and the second winding member 2 through the first receiving groove 11 and the second receiving groove 21, when the microfilament 81 is wound on the part of the microfilament 81 located between the first winding member 1 and the second winding member 2, the part of the microfilament 81 located between the first winding member 1 and the second winding member 2 gathers, the first winding member 1 moves toward the second winding member 2, and the two elastic members 7 are compressed. In this way, by providing the elastic member 7, the microfilament 81 can be kept in a taut state without being broken.

[0060] Preferably, the elastic member 7 is a spring.

[0061] Optionally, the connection hole 62 may extend to a position between the first placement hole 61 and the second placement hole, in which case one end of the elastic member 7 abuts against the first winding member 1, and the other end of the elastic member 7 abuts against the bottom wall of the extension hole 62. The connection hole 62 may also extend to the second placement hole, so that the first placement hole 61 is connected to the second placement hole through the connection hole 62, in which case both ends of the elastic member 7 abut against the first winding member 1 and the second winding member 2, respectively.

[0062] According to another aspect of the present application, a microfilament sample preparation method is provided. The microfilament sample preparation method is applied to the above-mentioned microfilament sample preparation device. The microfilament sample preparation method includes:

[0063] S1, winding the fine wire 81 on the first winding member 1 and the second winding member 2 through the first receiving groove 11 and the second receiving groove 21, and the number of winding turns of the fine wire 81 is greater than or equal to 20 turns;

[0064] S2, spirally winding the fine wire 81 on the portion of the fine wire 81 located between the first winding member 1 and the second winding member 2 with the first direction L1 as the axial direction;

[0065] S3, placing the two open parts of the sample cup 82 on the two supporting parts 31 respectively, and the two supporting parts 31 approach each other along the second direction L2 so that the two open parts abut against each other;

[0066] S4, injecting the embedding liquid into the sample cup 82, and the embedding liquid solidifies to form an initial sample;

[0067] S5. Separate the initial sample from the sample cup 82, and grind and polish the initial sample to form an observation sample.

[0068] In step S1, the head end of the microfilament 81 can be fixed on the end of the support member 6, and then the microfilament 81 is wound on the first winding member 1 and the second winding member 2 through the first receiving groove 11 and the second receiving groove 21, and the microfilament 81 is wound multiple times to complete the longitudinal winding. Preferably, the number of windings of the microfilament 81 is greater than or equal to 20.

[0069] In step S2, the microfilament 81 is spirally wound with the first direction L1 as the axial direction at the part of the microfilament 81 between the first winding member 1 and the second winding member 2, so that the part of the microfilament 81 between the first winding member 1 and the second winding member 2 is gathered together for easy observation after sample preparation. Under the action of the two elastic members 7, the first winding member 1 will move, and the microfilament 81 will not be broken while maintaining a taut state. After completing the lateral winding, the tail end of the microfilament 81 can also be fixed on the support member 6.

[0070] In step S3, the two open parts of the sample cup 82 are placed on the two supporting parts 31 respectively, and the two supporting parts 31 and the two open parts are driven to move by the two sliding parts 5 so that the two open parts abut against each other, so as to inject the embedding liquid into the sample cup 82;

[0071] In step S4 , an embedding liquid is injected into the sample cup 82 , and the embedding liquid solidifies to form an initial sample. The initial sample includes an embedding portion 9 formed by the solidification of the embedding liquid and the fine filaments 81 embedded in the embedding portion 9 .

[0072] In step S5, the part of the microfilament 81 located above the initial sample is first cut off, and then the two supporting members 31 are driven to separate by the two sliding members 5, and the initial sample is separated from the sample cup 82. Then, the two supporting members 6 are separated from the base 4, and the supporting member 6 is separated from the first winding member 1 and the second winding member 2. At this time, only the part of the second winding member 2 is located inside the initial sample. Since the radial cross section of the part of the microfilament 81 located between the first winding member 1 and the second winding member 2 is parallel to the top surface of the initial sample, the radial cross section of the microfilament 81 corresponds to the upper side of the initial sample. At this time, a large number of radial cross sections of the microfilament 81 gathered together can be observed on the top surface of the initial sample, and since the part of the microfilament 81 located between the first winding member 1 and the second winding member 2 is perpendicular to the top surface of the initial sample, the position distribution of the microfilament 81 on the sample surface will not be affected in the subsequent grinding and polishing process. Due to the existence of the second receiving groove 21, the axial direction of the part of the microfilament 81 located in the second receiving groove 21 is parallel to the bottom surface of the initial sample, which makes the axial cross section of the microfilament 81 parallel to the bottom surface of the initial sample. Through the subsequent grinding and polishing process, the axial cross section of the microfilament 81 can appear at the bottom of the initial sample. After the bottom of the initial sample is ground and polished, an observation sample is formed, such as Figure 5 and Figure 6As shown, the top surface of the observation sample corresponds to the radial section, and the bottom surface of the observation sample corresponds to the axial section. The preparation of the radial section and the axial section samples of the micro-filament 81 can be achieved through a single preparation process.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A microfilament sample preparation device, characterized in that: The microfilament sample preparation device comprises a first winding member, a second winding member and a supporting assembly, wherein the first winding member and the second winding member are spaced apart along a first direction, a first receiving groove is formed on a side of the first winding member facing away from the second winding member in the first direction, and a second receiving groove is formed on a side of the second winding member facing away from the first winding member in the first direction, and both the first receiving groove and the second receiving groove are used for winding microfilaments; The supporting assembly comprises a supporting surface, the supporting surface is perpendicular to the first direction, the supporting surface is located on a side of the second winding member facing away from the first winding member, and the supporting surface is used to support the sample cup.

2. The microfilament sample preparation device according to claim 1, characterized in that: The sample cup includes two open parts; The supporting assembly includes two supporting members, the two supporting members correspond to the two opening members respectively, the supporting members can support the corresponding opening members, and the two supporting members can approach or move away from each other in a second direction, and the second direction is perpendicular to the first direction.

3. The microfilament sample preparation device according to claim 2, characterized in that: The supporting surface includes two supporting parts; The supporting member includes a supporting portion and a surrounding portion, the supporting portion is connected to a side of the surrounding portion facing the second winding member in the first direction, the supporting portion is located on a side of the supporting portion facing the first winding member in the first direction, and two surrounding portions in the two supporting members can abut against each other.

4. The microfilament sample preparation device according to claim 2, characterized in that: The microfilament sample preparation device also includes a base and two sliding members, the two supporting members are respectively fixed on the two sliding members, and the sliding members are slidably connected to the base so that the sliding members can move on the base along the second direction.

5. The microfilament sample preparation device according to claim 4, characterized in that: A sliding groove is formed on the base, and the sliding groove extends along the second direction. Part of the sliding member is located in the sliding groove and can slide in the sliding groove.

6. The microfilament sample preparation device according to claim 5, characterized in that: The microfilament sample preparation device comprises two support members, the two support members are arranged at intervals along a third direction, and the third direction is perpendicular to a plane defined by the first direction and the second direction; The support member includes a first placement hole and a second placement hole, the first placement hole and the second placement hole are spaced apart along the first direction, the first winding member passes through two of the first placement holes, and the second winding member passes through two of the second placement holes.

7. The microfilament sample preparation device according to claim 6, characterized in that: The diameter of the microfilament is d; The dimension of the first receiving groove in the third direction is a, wherein 3d≤a≤5d; The dimension of the second receiving groove in the third direction is b, wherein 3d≤b≤5d.

8. The microfilament sample preparation device according to claim 6, characterized in that: The support member is provided with a connection hole, the connection hole extends along the first direction, the first placement hole is connected to the connection hole, and the size of the first placement hole in the first direction is larger than the size of the first winding member in the first direction; An elastic member is arranged in the connecting hole, and the elastic member abuts against the first winding member.

9. The microfilament sample preparation device according to claim 6, characterized in that: The base is provided with two mounting holes, the two mounting holes are spaced apart along the third direction, and the two supporting members are respectively inserted into the two mounting holes.

10. A method for preparing a microfilament sample, characterized in that: The microfilament sample preparation method is applied to the microfilament sample preparation device according to any one of claims 2 to 9, and the microfilament sample preparation method comprises: S1, winding the microfilament on the first winding member and the second winding member through the first receiving groove and the second receiving groove, and the microfilament is wound multiple times; S2, spirally winding the microfilament on a portion of the microfilament located between the first winding member and the second winding member with the first direction as an axial direction; S3, placing the two opening parts of the sample cup on the two supporting parts respectively, and the two supporting parts approach each other along the second direction so that the two opening parts abut against each other; S4, injecting a mounting solution into the sample cup, and the mounting solution solidifies to form an initial sample; S5. Separating the initial sample from the sample cup, and grinding and polishing the initial sample to form an observation sample.

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