Polyimide composite material sample extraction structure and operation method thereof

Abstract

The invention discloses a polyimide composite material sample extraction structure and an operation method thereof, and relates to the field of sample extraction.The polyimide composite material sample extraction structure comprises a base and a vertical plate installed above the rear end of the base through bolts, a movable platform is arranged at the upper end of the base, a sample box is arranged at the upper end of the movable platform, and a lifting platform is installed at the front end of the vertical plate; a sample extraction mechanism is arranged at the middle end of the lifting platform. According to the polyimide composite material sample extraction structure and the operation method thereof, when the polyimide composite material sample extraction structure is used, a hydraulic rod at the bottom of a base is started, a lifting platform in threaded connection with the surface of the hydraulic rod can be driven along with rotation of a threaded rod, and a limiting rod penetrates through the rear end of the lifting platform; the movable block slides towards the inner side of the lifting platform under the limitation of the cylinders at the front end and the rear end and drives the movable clamping rod and the collecting cover, so that the collecting cover clamps and collects polyimide composite material particles in the sample box, and convenient sampling is realized.

Description

Technical Field

[0001] This invention relates to the field of sample extraction technology, specifically to a polyimide composite material sample extraction structure and its operation method. Background Technology

[0002] A polyimide composite material sample extraction structure is a device for extracting materials for subsequent detection. It typically involves selecting a portion of the material for extraction of polyimide composite particles, and then selecting a portion of the material from the polyimide composite particles for subsequent analysis.

[0003] In the existing technology, when sampling polyimide composite materials, it is inconvenient to sample polyimide composite powder at different depths, which can easily lead to inaccurate judgment.

[0004] To overcome the above shortcomings, a prior art Chinese patent (publication number CN118168858A) discloses a polyimide sample separation and extraction component, including a sampling box containing a product box, a support frame on one side of the sampling box, and a conveying module on the upper side of the support frame; a connecting frame installed on the upper side of the sampling box and the support frame; a driving module installed on the upper side of the connecting frame, with an adjacent sampling module and a separation module installed at the bottom of the driving module; during sampling, the separation module first contacts the polyimide powder in the product box, processing a sampling area in the polyimide powder; when sampling accumulated polyimide powder, the separation module first vibrates and disperses the accumulated polyimide powder to form a sampling area, which facilitates the sampling frame to embed deeper into the polyimide powder during sampling, thus facilitating sampling of polyimide powder from different production periods, thereby improving the quality of sampling and testing.

[0005] To overcome the above shortcomings, a prior art Chinese patent (publication number CN214793859U) discloses a polyimide film strip test sampler, including a handle, a bracket, a blade holder, and blades. The bracket is connected to the handle, and the blade holder is connected to the bracket via a long bolt and a fixing nut. The long bolt passes through the blade holder and the bracket. The blades are detachably connected to the blade holder, and there are more than one blade. By setting the combination structure of the blades and the blade holder, the relatively tough polyimide film can be quickly divided into strips, improving the sampling efficiency of polyimide film and preventing burrs from being generated at the film edge, resulting in high sampling quality. The combination structure of the blade disc and the movable rod allows for the selection of different numbers of blades and the dividing distance, making it suitable for different sampling scenarios. The handheld handle is used for rolling, ensuring safe sampling and efficient dividing.

[0006] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation. For example, when sampling polyimide composite particles, it is inconvenient to sample particles at different depths. Furthermore, during sampling, as the sampling end descends, the storage box of polyimide composite particles experiences significant pressure, which can easily lead to the destruction of the polyimide composite particles and affect their subsequent use. Summary of the Invention

[0007] The purpose of this invention is to provide a polyimide composite material sample extraction structure and its operation method, in order to solve the problems mentioned in the background art, such as the inconvenience of sampling particles at different depths when sampling polyimide composite material particles, and the fact that the storage box of polyimide composite material particles is subjected to greater pressure as the sampling end descends, which can easily lead to the destruction of polyimide composite material particles and affect subsequent use.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a polyimide composite material sample extraction structure, comprising a base and a vertical plate bolted to the rear end of the base, a movable platform being provided at the upper end of the base, and a sample box being provided at the upper end of the movable platform, a lifting platform being installed at the front end of the vertical plate, and a sample extraction mechanism being provided at the middle end of the lifting platform, the sample extraction mechanism being aligned with the interior of the sample box, side plates being fixedly installed at the left and right ends of the lifting platform, and an auxiliary depth extraction mechanism being installed inside the side plates, the auxiliary depth extraction mechanism performing deep extraction of the polyimide composite material.

[0009] Furthermore, a hydraulic rod is fixedly installed at the bottom of the base, and the output end of the hydraulic rod is connected to the bottom of the movable platform.

[0010] Furthermore, a drive motor is fixedly installed at the upper end of the vertical plate, and a threaded rod is fixedly installed at the output end of the drive motor. The threaded rod is rotatably connected to the interior of the vertical plate, and the surface of the threaded rod is threadedly connected to the rear end of the lifting platform. A limit rod is installed through the rear end of the lifting platform, and the upper and lower ends of the limit rod are fixedly installed on the inner wall of the vertical plate.

[0011] Furthermore, the sample extraction mechanism is equipped with an electric push rod, the lower end of which is fixedly installed on the upper end of the lifting platform, and a pull plate is fixedly installed on the output end of the electric push rod, and the pull plate is L-shaped.

[0012] Furthermore, a coupling plate is fixedly installed at the lower end of the pull plate, and a guide rod is installed through the inside of the coupling plate. The lower end of the guide rod is fixedly installed at the upper end of the lifting platform. Adjusting plates are rotatably installed at the left and right ends of the coupling plate, and the lower end of the adjusting plates is rotatably installed at the upper end of the movable block. The front and rear ends of the movable block are provided with cylinders, and the cylinders are slidably connected to the inside of the lifting platform. A movable clamping rod is fixedly installed at the lower end of the movable block, and a collection cover is fixedly installed at the lower end of the movable clamping rod.

[0013] Furthermore, the auxiliary depth extraction mechanism is provided with a crossbar, the middle end of which is installed through the bottom of the side plate, and a contact plate is fixedly installed on the outer side of the crossbar. Toothed blocks are fixedly installed at equal intervals on the side of the vertical plate, and the ends of the toothed blocks are inclined, with the toothed blocks corresponding to the rear end of the contact plate.

[0014] Furthermore, a docking plate is fixedly installed on the inner side of the crossbar, and ball bearings are rotatably installed at equal intervals inside the docking plate, with the ball bearings corresponding to the side of the sample box. A pressure spring is sleeved on the surface of the crossbar, and the left and right sides of the pressure spring are installed on the inner walls of the side plate and the docking plate.

[0015] Furthermore, a traction rope is fixedly installed at the middle end of the pull plate, and three reversing wheels are fitted at the middle end of the traction rope. A positioning block is fixedly installed at the end of the traction rope, and a sliding rod is fixedly installed at the lower end of the positioning block. The surface of the sliding rod is slidably connected to the interior of the side plate.

[0016] Furthermore, racks are provided on both sides of the positioning block, and gears are meshed on the outer side of the positioning block. The upper and lower ends of the gears are rotatably installed inside the side plate, and an abutment frame is meshed on the outer side of the gears. An anti-slip pad is provided at the end of the abutment frame, and the abutment frame corresponds to the sample box.

[0017] Furthermore, the method for extracting the structure of a polyimide composite material sample is characterized by comprising the following steps: S1: When using this polyimide composite material sample extraction structure, start the hydraulic rod at the bottom of the base. After the coupling plate is pulled upward, it slides along the guide rod and can slide to the inside of the lifting platform, thereby driving the moving clamp and collection cover. This allows the collection cover to collect and grip the polyimide composite material particles inside the sample box for convenient collection. S2: As the lifting platform descends to extract samples, the side plates on both sides of the lifting platform move synchronously and reverse the docking plate. The docking plate taps the sample box through the ball bearings installed on the side, which prevents the polyimide composite sample particles inside the collection hood from being crushed due to excessive hardness. This assists in the subsequent collection of polyimide composite sample particles and can protect the polyimide composite sample particles and reduce the risk of sample damage. S3: After the moving clamp and collection hood extend into the sample box, when the pull plate is activated to rise for sample extraction, the pull plate pulls the traction rope. After being pulled, the traction rope, guided by the reversing wheel, can pull the positioning block. When the positioning block is pulled and moves in the opposite direction, it abuts against the sample box. This makes the extraction of polyimide composite material sample particles by the moving clamp and collection box more stable and improves the stability of the extraction.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. When using this polyimide composite material sample extraction structure, activate the hydraulic rod at the bottom of the base. As the threaded rod rotates, it drives the lifting platform that is threaded to its surface. A limit rod is installed through the rear end of the lifting platform, which can constrain the lifting platform and enable it to smoothly adjust its height. After the lifting platform is adjusted to the appropriate height, the movable clamping rod at its bottom is embedded inside the sample box. Then, the adjusting plate on both sides is pulled by the coupling plate. The adjusting plate pulls the movable block that is rotatably connected at the bottom. Under the limit of the front and rear cylindrical sections, the movable block slides inward to the lifting platform, and drives the movable clamping rod and the collection cover. This allows the collection cover to clamp and collect the polyimide composite material particles in the sample box, thereby achieving convenient sampling.

[0019] 2. When the lifting platform descends to extract samples, its side plates move down synchronously, and the contact plates at the bottom of the side plates move accordingly. With the help of the elastic force of the pressure springs, they push the docking plate in the opposite direction. The docking plate taps the sample box through the ball bearings installed on the side, causing the sample box to loosen slightly when the moving clamp and collection cover are inserted, making it easier for them to fit together. This design can avoid damage during compression due to the excessively dense accumulation of polyimide composite sample particles, which helps subsequent sampling operations and reduces the risk of sample damage during collection.

[0020] 3. After the moving clamp and collection hood extend into the sample box, the pull plate is activated to rise and extract the sample. The pull plate pulls the rope, which, guided by the reversing wheel, pulls the positioning block. After being pulled, the positioning block moves along the guide rail at its bottom. The guide rail passes through the side plate to provide motion constraint and simultaneously pushes the abutment frame to move in the opposite direction of the positioning block. During the movement, the abutment frame abuts against the side wall of the sample box, thus providing stable support when the moving clamp and collection hood extract polyimide composite material sample particles, improving the overall stability of the extraction process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below.

[0023] Figure 3 This is a rear-view stereoscopic structural diagram of the present invention.

[0024] Figure 4 This is a schematic diagram of the extended three-dimensional structure of the present invention.

[0025] Figure 5 This is a cross-sectional three-dimensional structural diagram of the movable block of the present invention.

[0026] Figure 6 This is a top-view three-dimensional structural diagram of the adjustment plate of the present invention.

[0027] Figure 7 This is a cross-sectional three-dimensional structural diagram of the crossbar of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the pressure spring of the present invention.

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the traction rope of the present invention.

[0030] Figure 10 This is a schematic diagram of the meshing structure of the positioning block, gear, and abutment frame of the present invention.

[0031] Figure 11 This is a cross-sectional three-dimensional structural diagram of the slide bar of the present invention.

[0032] In the diagram: 1. Base; 2. Vertical plate; 3. Hydraulic rod; 4. Movable platform; 5. Sample box; 6. Drive motor; 7. Threaded rod; 8. Lifting platform; 9. Limit rod; 10. Electric push rod; 11. Pull plate; 12. Coupling plate; 13. Adjusting plate; 14. Movable block; 15. Moving clamp rod; 16. Collection cover; 17. Guide rod; 18. Side plate; 19. Contact plate; 20. Crossbar; 21. Connecting plate; 22. Ball bearing; 23. Pressure spring; 24. Tooth block; 25. Traction rope; 26. Reversing wheel; 27. Positioning block; 28. Gear; 29. ​​Abutment frame; 30. Slide rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: As Figures 1-6The technical solution shown is a polyimide composite material sample extraction structure. To solve the problem of inconvenient collection of polyimide composite material sample particles, the structure discloses: a base 1 and a vertical plate 2 bolted to the rear end of the base 1; a movable platform 4 is provided at the upper end of the base 1, and a sample box 5 is provided at the upper end of the movable platform 4; a lifting platform 8 is installed at the front end of the vertical plate 2, and a sample extraction mechanism is provided at the middle end of the lifting platform 8, with the sample extraction mechanism aligned with the interior of the sample box 5; a hydraulic rod 3 is fixedly installed at the bottom of the base 1, and the output end of the hydraulic rod 3 is connected to the bottom of the movable platform 4; a drive motor 6 is fixedly installed at the upper end of the vertical plate 2, and a threaded rod 7 is fixedly installed at the output end of the drive motor 6, and the threaded rod 7 is rotatably connected to the interior of the vertical plate 2; the surface of the threaded rod 7 is threadedly connected to the rear end of the lifting platform 8, and the rear end of the lifting platform 8 extends through... A limiting rod 9 is installed, and the upper and lower ends of the limiting rod 9 are fixedly installed on the inner wall of the vertical plate 2. The sample extraction mechanism is equipped with an electric push rod 10, and the lower end of the electric push rod 10 is fixedly installed on the upper end of the lifting platform 8. A pull plate 11 is fixedly installed at the output end of the electric push rod 10. The pull plate 11 is L-shaped. A coupling plate 12 is fixedly installed at the lower end of the pull plate 11. A guide rod 17 is installed through the inside of the coupling plate 12. The lower end of the guide rod 17 is fixedly installed on the upper end of the lifting platform 8. Adjusting plates 13 are rotatably installed on the left and right ends of the coupling plate 12. The lower end of the adjusting plate 13 is rotatably installed on the upper end of the movable block 14. The front and rear ends of the movable block 14 are provided with cylinders, and the cylinders are slidably connected to the inside of the lifting platform 8. A movable clamping rod 15 is fixedly installed at the lower end of the movable block 14. A collection cover 16 is fixedly installed at the lower end of the movable clamping rod 15.

[0035] When using this polyimide composite material sample extraction structure, the hydraulic rod 3 at the bottom of the base 1 is activated. Activation of the hydraulic rod 3 pushes the movable platform 4, which moves forward. The sample box 5, containing polyimide composite material particles, can then be placed on top of the movable platform 4. As the hydraulic rod 3 retracts, the movable platform 4 causes the sample box 5 to retract into the bottom of the lifting platform 8. At this point, the drive motor 6 at the top of the vertical plate 2 is activated. Activation of the drive motor 6 drives the threaded rod 7, which in turn drives the threaded lifting platform 8. A limit rod 9 is installed at the rear end of the lifting platform 8, limiting its movement and allowing it to move forward. The height of the lifting platform 8 can be adjusted. After the height of the lifting platform 8 is adjusted, the bottom moving clamp 15 of the lifting platform 8 is embedded inside the sample box 5. At this time, by activating the electric push rod 10, the electric push rod 10 pushes the pull plate 11, causing the pull plate 11 to rise and drive the coupling plate 12. After the coupling plate 12 is pulled upward, it slides along the guide rod 17, and the coupling plate 12 pulls the adjusting plate 13 that is rotatably installed on both sides. The adjusting plate 13 pulls the movable block 14 that is rotatably installed at the bottom. Under the cylindrical limit of its front and rear ends, the movable block 14 can slide inward to the lifting platform 8, and drive the moving clamp 15 and the collection cover 16, so that the collection cover 16 can collect and clamp the polyimide composite material particles inside the sample box 5 for convenient collection.

[0036] Example 2: Figures 1-8 The technical solution shown, based on Embodiment 1, in order to solve the problem that if the polyimide composite material particles are too tightly packed, it can easily affect the depth of the embedded sampling end, discloses the following: Side plates 18 are fixedly installed at both ends of the lifting platform 8, and an auxiliary depth extraction mechanism is installed inside the side plates 18. The auxiliary depth extraction mechanism performs deep extraction of the polyimide composite material. The auxiliary depth extraction mechanism is provided with a crossbar 20, and the middle end of the crossbar 20 is installed through the bottom of the side plate 18. A contact plate 19 is fixedly installed on the outer side of the crossbar 20. Tooth blocks 24 are fixedly installed at equal intervals on the side of the vertical plate 2, and the ends of the tooth blocks 24 are inclined. The tooth blocks 24 correspond to the rear end of the contact plate 19. A docking plate 21 is fixedly installed on the inner side of the crossbar 20, and ball bearings 22 are rotatably installed at equal intervals inside the docking plate 21. The ball bearings 22 correspond to the side of the sample box 5. A pressure spring 23 is sleeved on the surface of the crossbar 20, and the left and right sides of the pressure spring 23 are installed on the inner walls of the side plate 18 and the docking plate 21.

[0037] As the lifting platform 8 descends to extract samples, the side plates 18 on both sides of the lifting platform 8 move synchronously, and the contact plates 19 at the bottom of the side plates 18 move synchronously. When the contact plates 19 move, the protruding end of the contact plates 19 contacts the equally spaced toothed blocks 24. Due to the protruding shape of the toothed blocks 24, the contact plates 19 are pulled outwards by the contact with the contact plates 19, causing the contact plates 19 to pull the crossbar 20. The crossbar 20 pulls the docking plate 21. When the contact plates 19 are located between the two toothed blocks 24, the pressure spring 23 pushes the docking plate 21 in the opposite direction. The docking plate 21 strikes the sample box 5 through the ball bearings 22 installed on the side, so that the sample box 5 can loosely fit the moving clamp 15 and the collection cover 16 when they are inserted. This prevents the polyimide composite sample particles inside the collection cover 16 from being crushed due to excessive hardness and avoids damage. This helps to collect the polyimide composite sample particles in the future and protects the polyimide composite sample particles, reducing the risk of sample damage.

[0038] Example 3: Figures 1-11 The technical solution shown, based on Embodiment 2, discloses the following to address the issue of poor sampling stability: a traction rope 25 is fixedly installed at the middle of the pull plate 11, and three reversing wheels 26 are fitted at the middle of the traction rope 25. A positioning block 27 is fixedly installed at the end of the traction rope 25, and a sliding rod 30 is fixedly installed at the lower end of the positioning block 27. The surface of the sliding rod 30 is slidably connected to the interior of the side plate 18. Racks are provided on both sides of the positioning block 27, and gears 28 are meshed on the outer side of the positioning block 27. The upper and lower ends of the gears 28 are rotatably installed inside the side plate 18. An abutment frame 29 is meshed on the outer side of the gears 28, and an anti-slip pad is provided at the end of the abutment frame 29, which corresponds to the sample box 5.

[0039] After the moving clamp 15 and the collection cover 16 are inserted into the sample box 5, when the pull plate 11 is raised to extract the sample, the pull plate 11 pulls the traction rope 25. After being pulled, the traction rope 25, guided by the reversing wheel 26, can pull the positioning block 27. After the positioning block 27 is pulled, it is guided by the slide rod 30 at the bottom of the positioning block 27. The slide rod 30 passes through the side plate 18 and guides the movement of the positioning block 27. When the positioning block 27 is pulled, the rack-like structure on the side of the positioning block 27 drives the meshing gear 28. The gear 28 rotates inside the side plate 18. The rotating gear 28 drives the meshing abutment frame 29 on the outside. The abutment frame 29 moves in the opposite direction of the positioning block 27. When it moves in the opposite direction of the positioning block 27, it abuts against the sample box 5. This makes the extraction of polyimide composite material sample particles by the moving clamp 15 and the collection box more stable and improves the stability of the extraction.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyimide composite material sample extraction structure, comprising a base (1) and a vertical plate (2) bolted to the rear end of the base (1), characterized in that: The upper end of the base (1) is provided with an active platform (4), and the upper end of the active platform (4) is provided with a sample box (5). The front end of the vertical plate (2) is provided with a lifting platform (8), and the middle end of the lifting platform (8) is provided with a sample extraction mechanism, which is aligned with the inside of the sample box (5). The left and right ends of the lifting platform (8) are fixedly installed with side plates (18), and the inside of the side plates (18) is provided with an auxiliary deep extraction mechanism, which performs deep extraction on the polyimide composite material.

2. The polyimide composite material sample extraction structure according to claim 1, characterized in that: A hydraulic rod (3) is fixedly installed at the bottom of the base (1), and the output end of the hydraulic rod (3) is connected to the bottom of the movable platform (4).

3. The polyimide composite material sample extraction structure according to claim 2, characterized in that: A drive motor (6) is fixedly installed at the upper end of the vertical plate (2), and a threaded rod (7) is fixedly installed at the output end of the drive motor (6). The threaded rod (7) is rotatably connected to the interior of the vertical plate (2), and the surface of the threaded rod (7) is threadedly connected to the rear end of the lifting platform (8). A limit rod (9) is installed through the rear end of the lifting platform (8), and the upper and lower ends of the limit rod (9) are fixedly installed on the inner wall of the vertical plate (2).

4. The polyimide composite material sample extraction structure according to claim 3, characterized in that: The sample extraction mechanism is equipped with an electric push rod (10), and the lower end of the electric push rod (10) is fixedly installed on the upper end of the lifting platform (8). The output end of the electric push rod (10) is fixedly installed with a pull plate (11), and the pull plate (11) is L-shaped.

5. The polyimide composite material sample extraction structure according to claim 4, characterized in that: A coupling plate (12) is fixedly installed at the lower end of the pull plate (11), and a guide rod (17) is installed through the inside of the coupling plate (12). The lower end of the guide rod (17) is fixedly installed at the upper end of the lifting platform (8). An adjusting plate (13) is rotatably installed at the left and right ends of the coupling plate (12), and the lower end of the adjusting plate (13) is rotatably installed at the upper end of the movable block (14). A cylinder is provided at the front and rear ends of the movable block (14), and the cylinder is slidably connected to the inside of the lifting platform (8). A movable clamping rod (15) is fixedly installed at the lower end of the movable block (14), and a collection cover (16) is fixedly installed at the lower end of the movable clamping rod (15).

6. The polyimide composite material sample extraction structure according to claim 1, characterized in that: The auxiliary depth extraction mechanism is provided with a crossbar (20), and the middle end of the crossbar (20) is installed through the bottom of the side plate (18). A contact plate (19) is fixedly installed on the outer side of the crossbar (20). Tooth blocks (24) are fixedly installed at equal intervals on the side of the vertical plate (2). The ends of the tooth blocks (24) are inclined, and the tooth blocks (24) correspond to the rear end of the contact plate (19).

7. The polyimide composite material sample extraction structure according to claim 6, characterized in that: A docking plate (21) is fixedly installed on the inner side of the crossbar (20), and ball bearings (22) are rotatably installed at equal intervals inside the docking plate (21). The ball bearings (22) correspond to the side of the sample box (5). A pressure spring (23) is sleeved on the surface of the crossbar (20), and the left and right sides of the pressure spring (23) are installed on the inner walls of the side plate (18) and the docking plate (21).

8. The polyimide composite material sample extraction structure according to claim 5, characterized in that: A traction rope (25) is fixedly installed at the middle end of the pull plate (11), and three reversing wheels (26) are attached to the middle end of the traction rope (25). A positioning block (27) is fixedly installed at the end of the traction rope (25), and a slide rod (30) is fixedly installed at the lower end of the positioning block (27). The surface of the slide rod (30) is slidably connected to the interior of the side plate (18).

9. The polyimide composite material sample extraction structure according to claim 8, characterized in that: The positioning block (27) is provided with racks on both sides, and gears (28) are meshed on the outer side of the positioning block (27). The upper and lower ends of the gears (28) are rotatably installed inside the side plate (18). Abutment frame (29) is meshed on the outer side of the gears (28). Anti-slip pads are provided at the ends of the abutment frame (29), and the abutment frame (29) corresponds to the sample box (5).

10. The method for extracting the structure of a polyimide composite material sample according to claim 1, characterized in that, It also includes the following specific steps: S1: When using this polyimide composite material sample extraction structure, start the hydraulic rod (3) at the bottom of the base (1). After the coupling plate (12) is pulled upward, it slides along the guide rod (17) and can slide to the inside of the lifting platform (8), and drive the moving clamp (15) and the collection cover (16) so that the collection cover (16) can collect and clamp the polyimide composite material particles inside the sample box (5) for convenient collection. S2: As the lifting platform (8) descends to extract samples, the side plates (18) on both sides of the lifting platform (8) move synchronously and reverse the docking plate (21). The docking plate (21) knocks the sample box (5) through the ball bearings (22) installed on the side, which prevents the polyimide composite sample particles inside the collection cover (16) from being crushed due to excessive hardness. This helps to collect the polyimide composite sample particles in the subsequent process and can protect the polyimide composite sample particles and reduce the risk of sample damage. S3: After the moving clamp (15) and the collection cover (16) are inserted into the sample box (5), when the pull plate (11) is raised to extract the sample, the pull plate (11) pulls the traction rope (25). After the traction rope (25) is pulled, it can pull the positioning block (27) under the guidance of the reversing wheel (26). After the positioning block (27) is pulled, it moves in the opposite direction of the positioning block (27) and abuts against the sample box (5). This makes the extraction of polyimide composite material sample particles by the moving clamp (15) and the collection box more stable and improves the stability of the extraction.

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