A method for detecting rapid rebound of compressed seed cotton

Abstract

This invention discloses a method for detecting the rapid rebound of compressed cotton in agricultural machinery, characterized by comprising at least the following steps: <1> Programming: Start the universal materials testing bench program and design the corresponding test plan; <2> Installation: Install the indenter and compression test bench onto the universal material test bench; <3> Locking: When electromagnets A and B are energized, the compression chamber closes and locks, overcoming the spring force during the process; <4> Place a light-shielding plate: Place a light-shielding plate at the bottom of the compression chamber; <5> Filling with seed cotton: Fill the compression chamber evenly with seed cotton, and make sure the height of the seed cotton is level with the height of the compression chamber; <6> Place the light-shielding strip: Place the light-shielding strip on the compression chamber; <7> Compression: The seed cotton was compressed using a universal material testing bench; <8> Recovery and Testing: After compression, the pressure head is raised to measure the rebound of the seed cotton. The overall structure is simple, compact, and easy to operate, solving the problem of accurately measuring the instantaneous rebound of seed cotton after compression.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, and in particular to a method for detecting the rapid rebound of compressed cotton seeds. Background Technology

[0002] Existing airborne baling devices have problems with reliability and stability after completing the baling operation, such as film cracking, scattering, or even failure to form the desired shape. The reason for this is a lack of understanding of the basic scientific issues such as the mechanical properties and resilience of seed cotton during the compression process.

[0003] Currently, there are few patents and literature related to the detection of material rebound characteristics, and there is a complete lack of patents and literature related to the detection of seed cotton rebound characteristics. Although it is possible to manually remove the seed cotton after compression and then test its rebound, it is impossible to measure the rapid rebound within the short period between the end of compression and the removal of the material. The rapid rebound within this short period has a significant impact on the quality of subsequent seed cotton wrapping. Furthermore, when the seed cotton is removed, the contact and friction between the compressed seed cotton and the chamber and the human hand will affect the shape and displacement of the material itself, leading to inaccurate measurements and errors. Therefore, there is an urgent need for a rapid detection method for the material rebound process that can automatically spring open, so as to facilitate the study of the mechanical and rebound characteristics of seed cotton during compression, and thus provide reasonable methods and basis for the design and improvement of cotton baling mechanisms and the formation mechanism of seed cotton.

[0004] Based on this, the present invention designs a rapid rebound detection method for seed cotton compression, which is used to study the mechanical properties of seed cotton compression and rebound process, so as to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to disclose a method for detecting the rapid rebound of compressed seed cotton, so as to solve the problems mentioned in the background art.

[0006] A method for detecting rapid rebound after compression of seed cotton, characterized by comprising at least the following steps:

[0007] Programming: Start the universal materials testing bench program and design the corresponding test plan;

[0008] Installation: Install the indenter and compression test bench onto the universal material test bench;

[0009] Locking: When electromagnets A and B are energized, the compression chamber closes and locks, overcoming the spring force during the process;

[0010] Place a light-shielding plate: Place a light-shielding plate at the bottom of the compression chamber;

[0011] Filling with seed cotton: Fill the compression chamber evenly with seed cotton, and make sure the height of the seed cotton is level with the height of the compression chamber;

[0012] Place the light-shielding strip: Place the light-shielding strip on the compression chamber;

[0013] Compression: The seed cotton was compressed using a universal material testing bench;

[0014] Follow-up Inspection: After compression, the pressure head is lifted to measure the rebound of the seed cotton after compression;

[0015] The rapid rebound detection device used in the above method is as follows: it includes a pressure head, a compression chamber, a universal material testing platform, laser displacement sensor A, laser displacement sensor B, laser displacement sensor C, a high-speed camera, and a base plate positioning shaft and positioning pins. The pressure head is fixed to the universal material testing platform via a threaded connection on the pressure head. A light-shielding plate is provided inside the compression chamber. The compression chamber consists of a front compression chamber and a rear compression chamber. Electromagnet A is fixed to the front compression chamber via an electromagnet mounting bracket A, and electromagnet B is fixed to the front compression chamber via an electromagnet mounting bracket B. A pin positioning device is provided on the compression chamber. The compression chamber is connected to the slider rail A via a connecting block and bolt A, and the compression chamber is connected to the slider rail B via a connecting block and bolt A. The slider rail A and slider rail B are connected to the compression bottom surface via bolt B. The compression bottom surface is equipped with a locator, a straight groove A, a straight groove B, and a positioning hole. The compression bottom surface is positioned to the base plate positioning shaft via the positioning hole and then fixedly connected by bolts C. The compression bottom surface is also fixedly connected to the universal material testing platform via the base plate positioning shaft. The front compression chamber has a test groove A, and the rear compression chamber has a test groove B. Light-shielding strips are placed on test grooves A and B. Laser displacement sensor A is mounted on a bracket A welded to the lower part of the compression bottom surface, laser displacement sensor B is mounted on a bracket B welded to the lower part of the compression bottom surface, and laser displacement sensor C is mounted on a bracket C on the left side of the compression chamber. The high-speed camera is located on the right side of the compression chamber. A spring limiting device is provided on the front compression chamber, and a spring support rod is provided on the rear compression chamber, with a spring mounted on the spring support rod.

[0016] Preferably, electromagnet A and electromagnet B are provided on the front compression chamber, and slider rail A and slider rail B are provided below the compression chamber. Slider rail A and slider rail B are fixedly installed on the compression bottom surface by bolt B, and a positioner is provided on the compression bottom surface.

[0017] Preferably, the compression bottom surface is provided with straight groove A and straight groove B, and support A and support B are provided below the compression bottom surface. The laser displacement sensor A is installed on support A, and the laser displacement sensor B is installed on support B.

[0018] Preferably, the compression chamber is provided with a light-shielding plate, and the laser displacement sensor C is mounted on the bracket C on the left side of the compression chamber, with the light-shielding plate and the laser displacement sensor C cooperating with each other.

[0019] Preferably, the high-speed camera is installed on the right side of the compression chamber to realize real-time recording of the cotton seed's rebound process after compression.

[0020] Preferably, the pressure head is connected to the universal material testing platform via a thread, and the compression bottom surface is also connected to the universal material testing platform via a thread. The pressure head, compression chamber, and compression bottom surface work together to complete coaxial compression.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention uses an electromagnet to lock the front and rear compression chambers. When the electromagnet is de-energized, the front and rear compression chambers are rapidly pushed apart by spring force along slider tracks A and B and then positioned. Simultaneously, a laser displacement sensor and a high-speed camera are used to record the displacement changes of the cotton seed rebound process in real time. The overall structure is simple, the size is small, and the operation is convenient, solving the problem of inaccurate measurement of the instantaneous rebound of cotton seed after compression.

[0023] The test bench designed in this invention is fixedly connected to the universal material test bench. The indenter, compression chamber, and compression bottom surface work together to complete the coaxial compression work, which can realize the comparison and measurement of the rebound characteristics after completing various compression mechanical property tests. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a flowchart illustrating the operation of the present invention.

[0026] Figure 2 This is a schematic diagram of the overall framework of the present invention;

[0027] Figure 3 This is a side view of the structure of the present invention in the locked state;

[0028] Figure 4 This is a side view of the structure of the present invention in its pop-out state;

[0029] Figure 5 This is a schematic diagram of the half-section side view structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the invention in its pop-up state (right view).

[0031] Figure 7 This is a top view structural diagram of the present invention in its pop-up state.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1-Universal material testing platform, 2-Indenter, 3-Compression chamber, 4-High-speed camera, 5-Compression bottom surface, 6-Laser displacement sensor B, 7-Base plate positioning shaft, 8-Laser displacement sensor C, 9-Electromagnet A, 10-Light shielding strip, 11-Rear compression chamber, 12-Straight groove B, 13-Electromagnet B, 14-Spring support rod, 15-Spring, 16-Bracket C, 17-Spring limiting device, 18-Electromagnet fixing frame B, 19-Connecting block, 2 0-Positioner, 21-Slider track B, 22-Front compression chamber, 23-Test slot A, 24-Straight slot A, 25-Slider track A, 26-Bolt B, 27-Bolt A, 28-Electromagnet mounting bracket A, 29-Laser displacement sensor B, 30-Bolt C, 31-Laser displacement sensor A, 32-Bracket B, 33-Bracket A, 34-Pin positioning device, 35-Test slot B, 36-Light shield, 37-Positioning pin, 38-Positioning hole. Detailed Implementation

[0034] The following will refer to the appendices in the embodiments of the present invention. Figure 1-7 The technical solutions in the embodiments of the present invention will be clearly and completely described. 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.

[0035] Example 1: A method for detecting rapid rebound after compression of seed cotton, characterized by including at least the following steps:

[0036] Program design: Start the Universal Material Test Bench (1) program and design the corresponding test scheme;

[0037] Installation: Install the pressure head (2) and the compression test bench on the universal material test bench (1);

[0038] Locking: Electromagnet A (9) and electromagnet B (13) are energized, and compression chamber (3) is closed and locked, during which the elastic force of spring (15) is overcome;

[0039] Place a light-shielding plate (36): Place a light-shielding plate (36) at the bottom of the compression chamber (3);

[0040] Filling with seed cotton: Fill the compression chamber (3) evenly with seed cotton, and fill the compression chamber (3) with seed cotton at the same height as the compression chamber (3);

[0041] Place the light-shielding strip (10): Place the light-shielding strip (10) on the compression chamber (3);

[0042] Compression: The seed cotton was compressed using a universal material testing bench (1);

[0043] Reply and test: After compression, the pressure head (2) is lifted to measure the rebound of the seed cotton after compression;

[0044] The rapid rebound detection device used in the above method is as follows: including a pressure head (2), a compression chamber (3), a universal material testing platform (1), a laser displacement sensor A (31), a laser displacement sensor B (6), a laser displacement sensor C (8), a high-speed camera (4), a base plate positioning shaft (7), and a positioning pin (37). The pressure head (2) and the universal material testing platform (1) are fixed by a threaded connection on the pressure head (2). The compression chamber (3) is equipped with a light shield (36). The compression chamber (3) consists of a front compression chamber (22) and a rear compression chamber (11). The front compression chamber... (22) An electromagnet A (9) is fixed on the front compression chamber (22) by an electromagnet fixing bracket A (28). An electromagnet B (13) is fixed on the front compression chamber (22) by an electromagnet fixing bracket B (18). A pin positioning device (34) is provided on the compression chamber (3). The compression chamber (3) is connected to the slider rail A (25) by a bolt A (27) through a connecting block (19). The compression chamber (3) is connected to the slider rail B (21) by a bolt A (27) through a connecting block (19). The slider rail A (25), the slider rail B (21) and the compression bottom surface (5) are connected by a bolt B (26). The compression bottom surface (5) is provided with a locator (20), a straight groove A (24), a straight groove B (12), and a positioning hole (38). The compression bottom surface (5) and the base plate positioning shaft (7) are positioned through the positioning hole (38) and then fixedly connected by bolts C (30). The compression bottom surface (5) and the universal material test bench (1) are connected and fixed through the base plate positioning shaft (7). The front compression chamber (22) is provided with a test groove A (23), and the rear compression chamber (11) is provided with a test groove B (35). A light-shielding strip (10) is placed on the test groove A (23) and the test groove B (35). The optical displacement sensor A (31) is mounted on the bracket A (33) welded below the compression bottom surface (5), the laser displacement sensor B (6) is mounted on the bracket B (32) welded below the compression bottom surface (5), the laser displacement sensor C (8) is mounted on the bracket C (16) on the left side of the compression chamber (3), and the high-speed camera (4) is located on the right side of the compression chamber (3); a spring limiting device (17) is provided on the front compression chamber (22), a spring support rod (14) is provided on the rear compression chamber (11), and a spring (15) is installed on the spring support rod (14).

[0045] The compression chamber (3) consists of a front compression chamber (22) and a rear compression chamber (11). Electromagnets A (9) and B (13) are fixed on the front compression chamber (22) by electromagnet fixing bracket A (28) and electromagnet fixing bracket B (18), respectively. When energized, electromagnets A (9) and B (13) generate magnetic force at the same time, so that the front compression chamber (22) and the rear compression chamber (11) are locked.

[0046] The pin positioning device (34) on the front compression chamber (22) and the rear compression chamber (11) cooperates with the positioning pin (37) to ensure that the front compression chamber (22) and the rear compression chamber (11) are in the correct position when locked under the magnetic force of electromagnet A (9) and electromagnet B (13). At this time, the compression chamber (3) is coaxial with the pressure head (2) and forms a cylindrical compression chamber (3) in the middle.

[0047] A spring limiting device (17) is provided on the front compression chamber (22), and a spring support rod (14) is provided on the rear compression chamber (11). A spring (15) is installed on the spring support rod (14). When the power is off, the magnetic force of electromagnet A (9) and electromagnet B (13) disappears at the same time. Under the thrust of the spring (15), the front compression chamber (22) and the rear compression chamber (11) can quickly spring open 150 mm to both sides along the slider track A (25) and the slider track B (21) and then be positioned by the positioner (20).

[0048] The compression chamber (3) is provided with test slot A (23) and test slot B (35). A light-shielding strip (10) is placed on test slot A (23) and test slot B (35). After the front compression chamber (22) and the rear compression chamber (11) are rapidly pushed apart to the sides along the slider track A (25) and slider track B (21) respectively, the laser displacement sensor A (31) and laser displacement sensor B (6) simultaneously emit lasers. The lasers pass through the straight slot A (24) and straight slot B (12) respectively and touch the light-shielding strip (10) to record the position. Displacement data; The compression chamber (3) is equipped with a light shield (36). After the front compression chamber (22) and the rear compression chamber (11) are rapidly opened to both sides along the track A and the slider track B (21), the laser displacement sensor C (8) emits a laser and touches the light shield (36) to record displacement data. The laser displacement sensor A (31) and the laser displacement sensor B (6) can detect the axial displacement during the springback process of the cotton after compression, and the laser displacement sensor C (8) can detect the radial displacement during the springback process of the cotton after compression.

[0049] The high-speed camera (4) is set on the right side of the compression chamber (3). After the front compression chamber (22) and the rear compression chamber (11) quickly spring open to both sides along the slider track A (25) and the slider track B (21), the high-speed camera (4) begins to take pictures in real time to record the pixel changes during the rebound of the seed cotton, so as to obtain the rebound situation of the seed cotton after compression in the future.

[0050] One specific application of this embodiment is: before using the present invention, start the universal material test bench (1) program, design the corresponding test plan, and the preliminary software preparation work is completed.

[0051] When using this invention, the pressure head (2) is installed on the universal material test bench (1). The compression bottom surface (5) and the base plate positioning shaft (7) are positioned through the positioning hole (38) and then fixedly connected by bolt C (30). Then, the compression bottom surface (5) and the universal material test bench (1) are connected and fixed through the base plate positioning shaft (7). Electromagnets A (9) and B (13) are energized, and electromagnets A (9) and B (13) generate magnetic force at the same time. Then, the front compression chamber (22) and the rear compression chamber (11) are manually pushed to the positioning pin. The compression chamber (3) is positioned at position (37). The front compression chamber (22) and the rear compression chamber (11) are locked under the magnetic force of electromagnet A (9) and electromagnet B (13). When locked, the pin positioning device (34) on the front compression chamber (22) and the rear compression chamber (11) cooperate with the positioning pin (37) to ensure that the front compression chamber (22) and the rear compression chamber (11) are aligned. At this time, the compression chamber (3) is coaxial with the pressure head (2) and forms a cylindrical compression chamber (3) in the middle.

[0052] First, place the light-shielding sheet (36) at the bottom of the compression chamber (3), aligning it horizontally with the laser displacement sensor C (8). Ensure that the laser emitted by the laser displacement sensor C (8) hits the light-shielding sheet (36) in a straight line. Then, feed the seed cotton evenly into the compression chamber (3) until the height of the seed cotton is level with the height of the compression chamber (3). Place the light-shielding strip (10) in the center on the seed cotton. The position of the light-shielding strip (10) must be on the straight line formed by the test groove A (23) and the test groove B (35). Ensure that the light-shielding strip (10) can move downwards along the test groove A (23) and the test groove B (35) with the seed cotton during the subsequent seed cotton compression process.

[0053] After raising and lowering the pressure head (2) to the same level as the compression chamber (3), start the program. The universal material test bench (1) begins to record the "force-displacement-time" changes of the pressure head (2) throughout the process. The pressure head (2) cooperates with the compression chamber (3) to complete the corresponding seed cotton compression test. After the compression is completed, the pressure head (2) quickly resets. At this time, press the switch, and the electromagnets A (9) and B (13) are de-energized and the magnetic force disappears. The magnetic force of the electromagnets A (9) and B (13) disappears at the same time. Under the action of the spring (15), the front compression chamber (22) and the rear compression chamber (11) can quickly spring open 150mm to both sides along the slider track A (25) and the slider track B (21) and then be positioned by the positioner (20).

[0054] Simultaneously, laser displacement sensor A (31), laser displacement sensor B (6), laser displacement sensor C (8), and high-speed camera (4) are activated. Laser displacement sensor A (31), mounted on bracket A (33), emits a laser. The laser passes through the straight groove A (24), touches the light-blocking strip (10), and returns displacement data. Laser displacement sensor B (6), mounted on bracket B (32), emits a laser. The laser passes through the straight groove B (12), touches the light-blocking strip (10), and returns displacement data, thus realizing the detection of axial displacement during the cotton rebound process. Laser displacement sensor C (8), mounted on bracket C (16), emits a laser. The laser touches the light-blocking plate (36) and records displacement data, thus realizing the detection of radial displacement during the cotton rebound process. High-speed camera (4) takes pictures in real time to record the pixel changes during the cotton rebound process, obtaining an all-round cotton rebound situation. After the rebound is completed, the compressed cotton is taken out, which is considered to be the complete end of one test.

[0055] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for detecting the rapid rebound of compressed seed cotton, characterized in that: At least the following steps are included: Program design: Start the Universal Material Test Bench (1) program and design the corresponding test scheme; Installation: Install the pressure head (2) and the compression test bench on the universal material test bench (1); Locking: Electromagnet A (9) and electromagnet B (13) are energized, and compression chamber (3) is closed and locked, during which the elastic force of spring (15) is overcome; Place a light-shielding plate (36): Place a light-shielding plate (36) at the bottom of the compression chamber (3); Filling with seed cotton: Fill the compression chamber (3) evenly with seed cotton, and fill the compression chamber (3) with seed cotton at the same height as the compression chamber (3); Place the light-shielding strip (10): Place the light-shielding strip (10) on the compression chamber (3); Compression: The seed cotton was compressed using a universal material testing bench (1); Reply and test: After compression, the pressure head (2) is lifted to measure the rebound of the seed cotton after compression; The rapid rebound detection device used in the above method is as follows: including a pressure head (2), a compression chamber (3), a universal material testing platform (1), a laser displacement sensor A (31), a laser displacement sensor B (6), a laser displacement sensor C (8), a high-speed camera (4), a base plate positioning shaft (7), and a positioning pin (37). The pressure head (2) and the universal material testing platform (1) are fixed by a threaded connection on the pressure head (2). The compression chamber (3) is equipped with a light shield (36). The compression chamber (3) consists of a front compression chamber (22) and a rear compression chamber (11). The front compression chamber... (22) An electromagnet A (9) is fixed on the front compression chamber (22) by an electromagnet fixing bracket A (28). An electromagnet B (13) is fixed on the front compression chamber (22) by an electromagnet fixing bracket B (18). A pin positioning device (34) is provided on the compression chamber (3). The compression chamber (3) is connected to the slider rail A (25) by a bolt A (27) through a connecting block (19). The compression chamber (3) is connected to the slider rail B (21) by a bolt A (27) through a connecting block (19). The slider rail A (25), the slider rail B (21) and the compression bottom surface (5) are connected by a bolt B (26). The compression bottom surface (5) is provided with a locator (20), a straight groove A (24), a straight groove B (12), and a positioning hole (38). The compression bottom surface (5) and the base plate positioning shaft (7) are positioned through the positioning hole (38) and then fixedly connected by bolts C (30). The compression bottom surface (5) and the universal material test bench (1) are connected and fixed through the base plate positioning shaft (7). The front compression chamber (22) is provided with a test groove A (23), and the rear compression chamber (11) is provided with a test groove B (35). A light-shielding strip (10) is placed on the test groove A (23) and the test groove B (35). The optical displacement sensor A (31) is mounted on the bracket A (33) welded below the compression bottom surface (5), the laser displacement sensor B (6) is mounted on the bracket B (32) welded below the compression bottom surface (5), the laser displacement sensor C (8) is mounted on the bracket C (16) on the left side of the compression chamber (3), and the high-speed camera (4) is located on the right side of the compression chamber (3); a spring limiting device (17) is provided on the front compression chamber (22), a spring support rod (14) is provided on the rear compression chamber (11), and a spring (15) is installed on the spring support rod (14).

2. The method for detecting rapid rebound of compressed seed cotton according to claim 1, characterized in that: Electromagnet A (9) and electromagnet B (13) are provided on the front compression chamber (22). Sliding rail A (25) and sliding rail B (21) are provided below the compression chamber (3). Sliding rail A (25) and sliding rail B (21) are fixedly installed on the compression bottom surface (5) by bolt B (26). Positioner (20) is provided on the compression bottom surface (5). When energized, electromagnet A (9) and electromagnet B (13) lock the compression chamber (3) to complete the compression. After compression, electromagnets A (9) and B (13) are de-energized, and their magnetic force disappears. Under the action of the spring, the front compression chamber (22) and the rear compression chamber (11) work together with the slider rails A (25) and B (21) to make the front compression chamber (22) and the rear compression chamber (11) quickly spring open 150 mm to both sides along the slider rails A (25) and B (21) respectively, and then be positioned by the positioner (20).

3. The method for detecting rapid rebound after compression of seed cotton according to claim 1, characterized in that: The compression bottom surface (5) is provided with straight groove A (24) and straight groove B (12). The compression bottom surface (5) is provided with support A (33) and support B (32). The laser displacement sensor A (31) is installed on support A (33) and the laser displacement sensor B (6) is installed on support B (32). After the front compression chamber (22) and the rear compression chamber (11) are rapidly opened to both sides along the slider track A (25) and the slider track B (21) respectively, the laser displacement sensor A (31) installed on support A (33) emits a laser. The laser passes through straight groove A (24) and touches the light-blocking strip (10) before returning displacement data. The laser displacement sensor B (6) installed on support B (32) emits a laser. The laser passes through straight groove B (12) and touches the light-blocking strip (10) before returning displacement data, thus realizing the detection of axial displacement during the rebound of seed cotton.

4. The method for detecting rapid rebound after compression of seed cotton according to claim 1, characterized in that: The compression chamber (3) is equipped with a light-shielding plate (36). The laser displacement sensor C (8) is installed on the bracket C (16) on the left side of the compression chamber (3). The light-shielding plate (36) and the laser displacement sensor C (8) cooperate with each other. After the front compression chamber (22) and the rear compression chamber (11) are rapidly pushed apart to both sides along the slider track A (25) and the slider track B (21) respectively, the laser displacement sensor C (8) installed on the bracket C (16) emits a laser. After the laser touches the light-shielding plate (36), it records the displacement data, thereby realizing the detection of radial displacement during the rebound of the seed cotton.

5. The method for detecting rapid rebound after compression of seed cotton according to claim 1, characterized in that: The high-speed camera (4) is set on the right side of the compression chamber (3). After the front compression chamber (22) and the rear compression chamber (11) are quickly pushed apart to both sides along the slider track A (25) and slider track B (21) respectively, the high-speed camera (4) begins to take pictures and record the pixel changes during the rebound of the compressed cotton in real time, so as to realize the all-round recording of the rebound of the cotton.

6. The method for detecting rapid rebound after compression of seed cotton according to claim 1, characterized in that: The pressure head (2) and the compression bottom surface (5) are fixedly connected to the universal material test bench (1). The pressure head (2), the compression chamber (3), and the compression bottom surface (5) work together to complete the coaxial compression work. The computer can control the compression process and compare and measure the rebound characteristics after completing various mechanical property tests.

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