Quantitative sampling device for cotton fiber detection

Abstract

The invention discloses a quantitative sampling device for cotton fiber detection, and particularly relates to the technical field of cotton fiber quality detection, the quantitative sampling device comprises a rack, and a control module, an extrusion module, a separation module, a metering module, a conveying module and a waste cotton box which are fixed on the rack; the extrusion module is used for compressing the fluffy cotton fibers; the separation module is used for separating part of the cotton fibers from the whole compressed cotton fibers; the metering module is used for weighing the separated cotton fibers, when the weight value meets the set weight, the conveying module is used for conveying the cotton fibers to a next detection device, and when the weight value does not meet the set weight, the conveying module is used for conveying the cotton fibers to a waste cotton box; the extrusion module, the separation module, the metering module and the conveying module are all in signal connection with the control module. The device can ensure the stability of the sampling amount, reduce the labor cost and personal errors, improve the detection precision and efficiency, and improve the overall efficiency and accuracy of cotton fiber detection.

Description

Technical Field

[0001] This invention relates to the field of cotton fiber quality testing technology, and in particular to a quantitative sampling device for cotton fiber testing. Background Technology

[0002] Cotton fiber testing is a crucial link in ensuring the efficient operation of the cotton industry chain. By scientifically measuring indicators such as fiber length, strength, fineness, maturity, and impurity content, it provides objective data for cotton purchasing, processing, and spinning, ensuring that raw material quality is precisely matched with production needs, reducing resource waste and cost losses. On the other hand, it promotes the implementation of the premium pricing mechanism, guiding cotton farmers to optimize planting structures and improve cotton quality, while helping textile enterprises produce higher-quality textiles, enhancing product market competitiveness, and ultimately achieving quality control and efficiency improvement across the entire chain from planting to end consumption.

[0003] Currently, cotton processing testing and sampling primarily rely on manual sampling and placement. This traditional manual method has significant drawbacks: firstly, it is inefficient and labor-intensive, making it difficult to meet the demands of large-scale processing; secondly, the accuracy and reliability of the test data are easily affected by subjective factors of the operators (such as inconsistent sample volume control), severely hindering the efficient and standardized development of the cotton industry. Since different sample volumes lead to different cotton testing conditions, the test data may fluctuate significantly, reducing accuracy. The scientific validity and reliability of the results directly affect cotton market pricing, trade settlement, and the stability of downstream textile processes. Therefore, the development of a quantitative sampling device for cotton fiber testing has become an urgent need for the industry. Summary of the Invention

[0004] The purpose of this invention is to provide a quantitative sampling device for cotton fiber detection, which solves the problems existing in the prior art, ensures the stability of the sampling amount, reduces labor costs and human error, improves detection accuracy and efficiency, and enhances the overall effectiveness and accuracy of cotton fiber detection.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a quantitative sampling device for cotton fiber detection, comprising a frame and a control module, a compression module, a separation module, a metering module, a conveying module, and a waste cotton bin fixed on the frame. The compression module is used to compress fluffy cotton fibers. The separation module is used to separate a portion of the cotton fibers from the compressed cotton fibers. The metering module is used to weigh the separated cotton fibers. When the weight value meets the set weight, the conveying module is used to convey the cotton fibers to the next detection device. When the weight value does not meet the set weight, the conveying module is used to convey the cotton fibers to the waste cotton bin. The compression module, the separation module, the metering module, and the conveying module are all signal-connected to the control module.

[0007] Preferably, the extrusion module includes a connecting pipe, a driving mechanism, an extrusion mechanism, a splitting pipe, and a supporting mechanism. The top opening of the connecting pipe is connected to and communicates with the extrusion mechanism, and the bottom opening of the connecting pipe is connected to and communicates with the top opening of the splitting pipe. Fluffy cotton fibers enter the connecting pipe through the side wall opening. The supporting mechanism includes a telescopic component and a supporting plate. The telescopic component is connected to the supporting plate and is used to extend or retract the supporting plate. The extended supporting plate can close the bottom opening of the splitting pipe. A vertical strip opening is provided on the side wall of the splitting pipe for inserting the splitting module. The driving mechanism is connected to the extrusion mechanism and is used to drive the extrusion mechanism to move toward the splitting pipe and extrude the fluffy cotton fibers in the connecting pipe onto the supporting plate.

[0008] Preferably, the extrusion mechanism includes a piston cylinder, a piston, and a piston rod. The piston cylinder is connected to and communicates with the communicating pipe. One end of the piston rod is fixedly connected to the piston, and the other end of the piston rod is connected to the drive mechanism. The piston is slidably disposed in the piston cylinder, and the piston is in close contact with the inner surface of the piston cylinder.

[0009] Preferably, the supporting mechanism includes a fixed plate, a guide rail, a slider, the telescopic assembly, and the supporting plate. The fixed plate is fixedly connected to the frame, the guide rail is fixedly installed on the back of the fixed plate, the slider is slidably disposed on the guide rail, the supporting plate is fixedly connected to the slider, the telescopic assembly is a telescopic cylinder, the fixed end of the telescopic cylinder is fixedly connected to the bottom surface of the fixed plate, the free end of the telescopic cylinder is fixedly connected to the supporting plate, the axial direction of the telescopic cylinder is parallel to the guide rail, the fixed plate has a central hole, and the splitting pipe is placed in the central hole.

[0010] Preferably, the separation module is fixedly connected to the top surface of the fixed plate. The separation module includes a sliding cylinder, a vertical telescopic cylinder, a fixed pin plate, a movable pin plate, a pin assembly, and a separation limiting plate. The cylinder body of the sliding cylinder is fixedly connected to the fixed plate. The worktable of the sliding cylinder is fixedly connected to the fixed end of the vertical telescopic cylinder. The fixed pin plate is fixedly connected to the end of the vertical telescopic cylinder away from the sliding cylinder. The movable pin plate is fixedly connected to the free end of the vertical telescopic cylinder. The pin assembly includes a fixed pin row and a separation pin row arranged in parallel. The separation pin row is located below the fixed pin row. The fixed pin array is fixedly installed on the fixed pin plate, the separating pin array is fixedly installed on the movable pin plate, the separating limiting plate is fixedly connected to the bottom surface of the fixed plate, the separating limiting plate is located below the central hole, and a vertical strip-shaped separating groove is provided on the separating limiting plate. The sliding cylinder drives the vertical telescopic cylinder to move to the central hole, and at the same time, the pin array passes through the vertical strip-shaped opening of the splitting pipe and inserts into the compressed cotton fiber. The vertical telescopic cylinder drives the separating pin array to pass through the vertical strip-shaped opening and enter the vertical separating groove, while pulling some cotton fibers away from the splitting pipe.

[0011] Preferably, the number of separation modules is two, and the two separation modules are symmetrically arranged about the splitting pipe.

[0012] Preferably, the pin groups of the two separate modules are arranged alternately, one above the other.

[0013] Preferably, the metering module includes a metering housing, a tray, and a weighing sensor. The tray and the weighing sensor are placed inside the metering housing. The top of the metering housing has an opening for cotton fibers to enter. The weighing sensor is located below the tray. The tray is used to receive a portion of the cotton fibers separated from the compressed cotton fiber whole. The weighing sensor is used to collect the weight data of the cotton fibers on the tray.

[0014] Preferably, the conveying module includes a first conveying pipe, a second conveying pipe, a first suction fan, and a second suction fan. One end of the first conveying pipe is connected to and communicates with the metering housing, and the other end is used to connect to and communicate with the next detection device. One end of the second conveying pipe is connected to and communicates with the metering housing, and the other end is connected to and communicates with the waste cotton box. The first suction fan is connected to the first conveying pipe, and the second suction fan is connected to the second conveying pipe.

[0015] Preferably, the bottom of the frame is equipped with casters.

[0016] The present invention achieves the following technical effects compared to the prior art:

[0017] This invention provides a quantitative sampling device for cotton fiber testing, comprising a frame and a control module, a compression module, a separation module, a metering module, a conveying module, and a waste cotton bin fixed on the frame. Through precise compression control by the compression module, the cotton fibers maintain a stable density and structure before separation, thus ensuring the controllability and consistency of the separated cotton fiber quantity by the separation module. Furthermore, the precise metering by the metering module and the intelligent sorting by the conveying module effectively guarantee the weight accuracy and representativeness of each sample. The overall structure is highly automated. Since the compression module, separation module, metering module, and conveying module are all connected to the control module, it not only improves the accuracy and efficiency of cotton fiber testing but also effectively solves the problems of cumbersome operation, poor consistency, and low efficiency in traditional manual sampling. It is suitable for the automated, standardized, and high-precision testing needs in the field of cotton fiber quality testing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in 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.

[0019] Figure 1 This is a schematic diagram of a quantitative sampling device used for cotton fiber detection.

[0020] Figure 2 This is a structural schematic diagram of the extrusion module and part of the separation module;

[0021] Figure 3 This is a schematic diagram of the extrusion structure;

[0022] Figure 4 This is a structural diagram of the supporting mechanism;

[0023] Figure 5 This is a schematic diagram of the structure of two separate modules;

[0024] Figure 6 This is a schematic diagram of the structure of a separate module;

[0025] Figure 7 This is a schematic diagram of the metering module.

[0026] In the diagram: 1-Frame; 2-Control module; 3-Extrusion module; 4-Separation module; 5-Metering module; 6-Conveying module; 7-Waste cotton box; 8-Fuma wheel; 9-Connecting pipe; 10-Drive mechanism; 11-Extrusion mechanism; 12-Piston cylinder; 13-Piston rod; 14-Piston; 15-Separation pipe; 16-Vertical strip opening; 17-Telescopic component; 18-Support plate; 19-Fixing plate; 20-Guide rail; 21-Slider; 22-Center hole; 23-Slide table cylinder; 24-Vertical telescopic cylinder; 25-Fixing pin plate; 26-Moving pin plate; 27-Fixing pin row; 28-Separation pin row; 29-Separation limit plate; 30-Vertical strip separation groove; 31-Tray; 32-Weighing sensor; 33-Upper pad; 34-Lower pad. Detailed Implementation

[0027] 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.

[0028] The purpose of this invention is to provide a quantitative sampling device for cotton fiber detection, which solves the problems existing in the prior art, ensures the stability of the sampling amount, reduces labor costs and human error, improves detection accuracy and efficiency, and enhances the overall effectiveness and accuracy of cotton fiber detection.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] This embodiment provides a quantitative sampling device for cotton fiber detection, such as... Figure 1As shown, the system includes a frame 1 and a control module 2, a compression module 3, a separation module 4, a metering module 5, a conveying module 6, and a waste cotton bin 7 fixed on the frame 1. The compression module 3 is used to compress the fluffy cotton fibers. The separation module 4 is used to separate some of the cotton fibers from the compressed cotton fibers. The metering module is used to weigh the separated cotton fibers. When the weight value meets the set weight, the conveying module 6 is used to convey the cotton fibers to the next detection device. When the weight value does not meet the set weight, the conveying module 6 is used to convey the cotton fibers to the waste cotton bin 7. The compression module 3, separation module 4, metering module 5, and conveying module 6 are all connected to the control module 2 via signals. The system includes a frame 1 and, fixed to the frame 1, a control module 2, a compression module 3, a separation module 4, a metering module 5, a conveying module 6, and a waste cotton bin 7. The compression module 3 uniformly compresses the fluffy cotton fibers, ensuring the consistency and controllability of the overall cotton fiber density, providing a foundation for subsequent precise separation. The separation module 4 separates some fibers from the compressed cotton fibers; because the initial compression ensures stable fiber density, the amount of separated cotton fibers remains constant. The metering module accurately weighs the separated cotton fibers, determining in real time whether their weight meets the set target value. The conveying module 6, based on the feedback from the metering module... The system uses a feed signal to intelligently allocate the flow of cotton fibers. When the fiber weight meets the set requirements, it is transported to the next testing stage; when the weight does not meet the requirements, it is automatically sent to the waste cotton box 7 to prevent unqualified samples from entering the testing process. The extrusion module 3, separation module 4, metering module 5, and conveying module 6 are all connected to the control module 2, realizing automated control and coordinated operation of the entire process. This not only significantly improves the accuracy and efficiency of cotton fiber testing, but also effectively solves the problems of cumbersome operation, poor consistency, and low efficiency in the traditional manual sampling process. It is suitable for the automated, standardized, and high-precision testing needs in the field of cotton fiber quality testing.

[0032] In the implementation of this embodiment, it is further preferred that, as follows: Figures 2-3As shown, the extrusion module 3 includes a connecting pipe 9, a driving mechanism 10, an extrusion mechanism 11, a splitting pipe 15, and a supporting mechanism. The top opening of the connecting pipe 9 is connected to and communicates with the extrusion mechanism 11, and the bottom opening of the connecting pipe 9 is connected to and communicates with the splitting pipe 15. Fluffy cotton fibers enter the connecting pipe 9 through the side wall opening of the connecting pipe 9. The supporting mechanism includes a telescopic component 17 and a supporting plate 18. The telescopic component 17 is connected to the supporting plate 18. The telescopic component 17 is used to drive the supporting plate 18 to extend or retract. The extended supporting plate 18 can close the bottom opening of the splitting pipe 15. A vertical strip opening 16 is provided on the side wall of the splitting pipe 15 for the insertion of the splitting module 4. The vertical strip opening 16 of the splitting pipe 15 communicates with the bottom opening of the splitting pipe 15. The driving mechanism 10 is connected to the extrusion mechanism 11. The driving mechanism 10 is used to drive the extrusion mechanism 11 to move toward the splitting pipe 15 and to extrude the fluffy cotton fibers in the connecting pipe 9 onto the supporting plate 18. Preferably, the drive mechanism 10 is a stepper motor, and the connecting pipe 9 is a three-way pipe. When the fluffy cotton fibers enter the connecting pipe 9 through the side wall opening, the telescopic component 17 drives the support plate 18 to extend and close the bottom opening of the splitting pipe 15. Then, the squeezing mechanism 11 pushes the cotton fibers to be tested downward into the splitting pipe 15. The squeezing mechanism 11 applies a stable and controllable squeezing force to the fluffy cotton fibers in the axial direction. The cotton fibers are gradually compressed in the limited space formed by the squeezing mechanism 11, the splitting pipe 15, and the support plate 18, thereby improving and homogenizing the overall density of the cotton, compressing the fluffy cotton fibers to the preset target density value, and ensuring that the density distribution of the cotton fibers is under control.

[0033] In a further preferred embodiment of this invention, the extrusion mechanism 11 includes a piston cylinder 12, a piston 14, and a piston rod 13. The piston cylinder 12 is connected to and communicates with the connecting pipe 9. One end of the piston rod 13 is fixedly connected to the piston 14, and the other end of the piston rod 13 is connected to the drive mechanism 10. The piston 14 is slidably disposed within the piston cylinder 12, and the piston 14 is in close contact with the inner surface of the piston cylinder 12. The piston 14 and the piston rod 13 move along the piston cylinder 12 to achieve precise compression of the cotton fibers and ensure precise control of the cotton fiber density. Further preferably, a sealing ring is provided on the piston 14, which allows the piston 14 to be in close contact with the inner surface of the piston cylinder 12, preventing cotton fibers from entering the piston cylinder 12, reducing cotton fiber loss, and improving the sealing performance of the extrusion module 3.

[0034] In the implementation of this embodiment, it is further preferred that, as follows: Figure 4As shown, the support mechanism includes a fixed plate 19, a guide rail 20, a slider 21, a telescopic assembly 17, and a support plate 18. The fixed plate 19 is fixedly connected to the frame 1. The guide rail 20 is fixedly installed on the back of the fixed plate 19. The slider 21 is slidably mounted on the guide rail 20. The support plate 18 is fixedly connected to the slider 21. The telescopic assembly 17 is a telescopic cylinder. The fixed end of the telescopic cylinder is fixedly connected to the bottom surface of the fixed plate 19, and the free end of the telescopic cylinder is fixedly connected to the support plate 18. The axis of the telescopic cylinder is parallel to the guide rail 20. The fixed plate 19 has a central hole 22, and the split pipe 15 is placed in the central hole 22. The support plate 18 is driven by the telescopic cylinder to smoothly extend or retract along the guide rail 20, thereby precisely adjusting the position of the support plate 18. The cooperation between the guide rail 20 and the slider 21 ensures the directional stability, high straightness, and no deviation of the support plate 18 during movement, improving the accuracy and reliability of the movement.

[0035] In the implementation of this embodiment, it is further preferred that, as follows: Figures 5-6As shown, the separation module 4 is fixedly connected to the top surface of the fixed plate 19. The separation module 4 includes a separation housing and a sliding cylinder 23, a vertical telescopic cylinder 24, a fixed pin plate 25, a movable pin plate 26, a pin assembly, and a separation limiting plate 29 placed inside the separation housing. The cylinder body of the sliding cylinder 23 is fixedly connected to the fixed plate 19. The worktable of the sliding cylinder 23 is fixedly connected to the cylinder of the vertical telescopic cylinder 24, and the cylinder of the vertical telescopic cylinder 24 is connected to the worktable of the sliding cylinder 23 through a reinforcing plate. The fixed pin plate 25 is fixedly connected to the end of the vertical telescopic cylinder 24 away from the sliding cylinder 23. The movable pin plate 26 is fixedly connected to the free end of the vertical telescopic cylinder 24. The pin assembly includes a fixed pin row 27 and a separation pin row 28 arranged in parallel. The separation pin row 28 has... Below the fixed pin row 27, which is fixedly mounted on the fixed pin plate 25, the separating pin row 28 is fixedly mounted on the movable pin plate 26. The separating limiting plate 29 is fixedly connected to the bottom surface of the fixed plate 19 and is located below the central hole 22. The separating limiting plate 29 has a vertical strip-shaped separating groove 30. The separating shell has a shell outlet on the side near the splitting pipe 15, allowing the pin assembly to extend. The sliding cylinder 23 drives the vertical telescopic cylinder 24 to move to the central hole 22, simultaneously causing the pin assembly to pass through the shell outlet and the vertical strip-shaped opening 16 of the splitting pipe 15 and insert into the compressed cotton fibers. The vertical telescopic cylinder 24 drives the separating pin row 28 through the vertical strip-shaped opening 16 into the vertical strip-shaped separating groove 30, while simultaneously pulling some cotton fibers away from the splitting pipe 15. Preferably, the pins are triangular needles, which have stronger penetrating power. After the compression module 3 completes the compression of the cotton fibers, the slide cylinder 23 drives the fixed pin row 27 and the separating pin row 28 to move synchronously toward the splitting pipe 15, inserting the pins into the compressed cotton fibers. Then, the telescopic component 17 drives the support plate 18 to retract, so that the pins can stably support the cotton fibers and prevent them from falling out of the splitting pipe 15. Next, the vertical telescopic cylinder 24 drives the separating pin row 28 to move downward, pulling out some fibers from the whole cotton fiber. Since the adjustment distance between the fixed pin row 27 and the separating pin row 28 is fixed, it ensures that the amount of cotton fibers pulled out each time is kept within the set value range. When the separating pin row 28 moves down to the vertical limit plate 29... When the strip separation groove is at position 30, the telescopic component 17 again drives the support plate 18 to extend outward. Then, the slide cylinder 23 drives the fixed pin row 27 and the separation pin row 28 to move away from the splitting pipe 15 as a whole, so that the fixed pin row 27 is separated from the cotton fibers in the pipe, and the separation pin row 28 is also separated from the separated cotton fibers under the limiting action of the separation limiting plate 29. At this time, the remaining cotton fibers in the splitting pipe 15 have become relatively loose due to the previous pulling action, and need to be compressed evenly again by the extrusion module 3 to ensure that the overall density is consistent. Finally, the separated part of the cotton fibers is transported to the metering module for accurate weighing, thereby realizing the quantitative separation of cotton fibers and the orderly connection of subsequent detection processes.

[0036] In a further preferred embodiment of this invention, the number of separation modules 4 is two, symmetrically arranged about the splitting pipe 15, with the pin groups of the two separation modules 4 staggered vertically. When the two pin groups are symmetrically inserted into the cotton fibers, they form a stable clamping effect on the cotton fibers. When the two fixed pin groups 27 symmetrically support the fibers, the overall force is uniform, which helps to maintain the relative integrity of the fibers during the pulling process. When the two separation pin groups 28 pull out part of the cotton fibers downwards, local loosening, fiber clump displacement, or entanglement will not occur due to uneven force on one side. This helps to achieve a more stable and controllable amount of cotton fibers separated each time, improving the accuracy and repeatability of quantitative separation.

[0037] In the implementation of this embodiment, it is further preferred that, as follows: Figure 7 As shown, the metering module includes a metering housing, a tray 31, and a weighing sensor 32. The tray 31 and the weighing sensor 32 are placed inside the metering housing. An opening is provided at the top of the metering housing to allow cotton fibers to enter. The weighing sensor 32 is installed between an upper pad 33 and a lower pad 34 and is precisely positioned and connected via mounting holes and fixing bolts. The upper pad 33 is installed above the tray 31. The tray 31 is used to receive a portion of the cotton fibers separated from the compressed cotton fiber assembly. The weighing sensor 32 is used to collect the weight data of the cotton fibers on the tray 31. The precise weighing of the separated fibers by the metering module provides crucial data support for the subsequent control of the accuracy and consistency of the amount of separated fibers each time.

[0038] In a further preferred embodiment of this invention, the conveying module 6 includes a first conveying pipe, a second conveying pipe, a first suction fan, and a second suction fan. One end of the first conveying pipe is connected to and communicates with the metering housing, and the other end is connected to and communicates with the next detection device. One end of the second conveying pipe is connected to and communicates with the metering housing, and the other end is connected to and communicates with the waste cotton box 7. The first suction fan is connected to the first conveying pipe, and the second suction fan is connected to the second conveying pipe. The conveying module 6 automatically diverts cotton fibers according to the weight detection results, ensuring that only cotton fibers that meet the set weight enter the subsequent process, thereby improving detection efficiency and accuracy.

[0039] In a further preferred embodiment of this invention, four casters 8 are installed at the bottom of the frame 1, enabling the device to be easily moved and positioned in different working environments, ensuring operational flexibility and equipment stability.

[0040] In a further preferred embodiment of this invention, the control module 2 consists of a touch screen, operation buttons, and a PLC control unit. The touch screen is mounted above the frame 1 for easy operation and observation. The PLC control unit, as the core control hub, can precisely control the coordinated operation of each functional module. The PLC control unit can collect the weight data of the metering module in real time and upload it to the cotton sample weight real-time reading software installed on the industrial control computer to achieve visualized monitoring of the detection data. At the same time, the module integrates operation buttons such as start, reset, stop, and emergency stop, as well as power indicator lights, providing operators with an intuitive safety control interface to ensure the operational safety and status visibility of the entire quantitative sampling device throughout the entire process of startup, operation, and abnormal handling.

[0041] Example 2

[0042] This embodiment provides a method for using the quantitative sampling device for cotton fiber detection as described in Embodiment 1.

[0043] When the fluffy cotton fibers enter the connecting pipe 9, the control mechanism automatically executes a preset procedure to quantitatively separate the cotton fibers: First, the control mechanism controls the telescopic cylinder to drive the support plate 18 to extend, sealing the bottom opening of the splitting pipe 15. Then, it controls the stepper motor to drive the piston rod 13 to move downward in the piston cylinder 12, so that the fluffy cotton fibers are gradually compressed to the preset target density in the sealed space formed by the piston 14, the splitting pipe 15, and the support plate 18, completing a precise compression. After compression, the control mechanism immediately controls the slide cylinder 23 to drive the fixed pin row 27 and the separation pin row 28 to simultaneously insert into the compressed cotton fibers. Then, it controls the telescopic component 17 to drive the support plate 18 to retract, facilitating subsequent separation actions. Immediately afterwards, the control mechanism activates the vertical telescopic cylinder 24 to drive the separation pin row 28 to move downward. A portion of the cotton fiber is pulled out from the whole. When the separating pin row 28 moves down to the position of the vertical strip separating groove 30 on the separating limiting plate 29, the telescopic component 17 drives the support plate 18 to extend outward again to close the bottom of the pipe. At the same time, the slide cylinder 23 drives the fixed pin row 27 and the separating pin row 28 to move away from the splitting pipe 15, so that the fixed pin row 27 is separated from the fiber in the pipe, and the separating pin row 28 is also separated from the pulled-out fiber under the limiting action of the separating limiting plate 29, thus completing a precise separation. At this time, the separated cotton fiber is then transported to the metering module for precise weighing. The conveying module 6 automatically diverts the fibers according to the weighing results. Fibers that meet the set weight enter the subsequent testing process, while fibers that do not meet the set weight are sent to the waste cotton box 7 to complete a quantitative sampling operation. Next, the remaining cotton fibers in the splitting pipe 15 will repeat the above squeezing and separation steps, and perform secondary or even multiple squeezing and separation until the entire quantitative separation process is completed, ensuring that the weight of each separated cotton fiber is controlled within the target range, and achieving precise quantitative processing of cotton fibers.

[0044] For example, if the total weight of the cotton fiber to be processed is 50g, and the target amount to be separated each time is set to be about 10g, then the quantitative sampling device used for cotton fiber detection needs to perform no more than three compression and separation operations on the cotton fiber. That is, each time the cotton fiber is compressed to the target density by the compression module, the slide cylinder 23 drives the needle row to insert into the fiber, and then the separation needle row 28 pulls out about 10g of fiber. After three cycles, the quantitative separation of 50g of cotton fiber is finally completed, ensuring that the weight of the separated fiber is controlled within the set range to meet the precise requirements of the fiber quantity in subsequent testing or process steps.

[0045] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A quantitative sampling device for cotton fiber detection, characterized in that: The system includes a frame and a control module, a compression module, a separation module, a metering module, a conveying module, and a waste cotton bin fixed on the frame. The compression module is used to compress fluffy cotton fibers. The separation module is used to separate some cotton fibers from the compressed cotton fibers. The metering module is used to weigh the separated cotton fibers. When the weight value meets the set weight, the conveying module is used to convey the cotton fibers to the next detection device. When the weight value does not meet the set weight, the conveying module is used to convey the cotton fibers to the waste cotton bin. The compression module, the separation module, the metering module, and the conveying module are all signal-connected to the control module.

2. The quantitative sampling device for cotton fiber detection according to claim 1, characterized in that: The extrusion module includes a connecting pipe, a driving mechanism, an extrusion mechanism, a splitting pipe, and a supporting mechanism. The top opening of the connecting pipe is connected to and communicates with the extrusion mechanism, and the bottom opening of the connecting pipe is connected to and communicates with the top opening of the splitting pipe. Fluffy cotton fibers enter the connecting pipe through the side wall opening. The supporting mechanism includes a telescopic component and a supporting plate. The telescopic component is connected to the supporting plate and is used to extend or retract the supporting plate. The extended supporting plate can close the bottom opening of the splitting pipe. The side wall of the splitting pipe has a vertical strip opening for inserting the splitting module. The driving mechanism is connected to the extrusion mechanism and is used to drive the extrusion mechanism to move toward the splitting pipe and extrude the fluffy cotton fibers in the connecting pipe onto the supporting plate.

3. The quantitative sampling device for cotton fiber detection according to claim 2, characterized in that: The extrusion mechanism includes a piston cylinder, a piston, and a piston rod. The piston cylinder is connected to and communicates with the connecting pipe. One end of the piston rod is fixedly connected to the piston, and the other end of the piston rod is connected to the drive mechanism. The piston is slidably disposed inside the piston cylinder, and the piston is in close contact with the inner side of the piston cylinder.

4. The quantitative sampling device for cotton fiber detection according to claim 2, characterized in that: The supporting mechanism includes a fixed plate, a guide rail, a slider, the telescopic assembly, and the supporting plate. The fixed plate is fixedly connected to the frame. The guide rail is fixedly installed on the back of the fixed plate. The slider is slidably disposed on the guide rail. The supporting plate is fixedly connected to the slider. The telescopic assembly is a telescopic cylinder. The fixed end of the telescopic cylinder is fixedly connected to the bottom surface of the fixed plate, and the free end of the telescopic cylinder is fixedly connected to the supporting plate. The axial direction of the telescopic cylinder is parallel to the guide rail. The fixed plate has a central hole, and the splitting pipe is placed in the central hole.

5. The quantitative sampling device for cotton fiber detection according to claim 4, characterized in that: The separation module is fixedly connected to the top surface of the fixed plate. The separation module includes a sliding cylinder, a vertical telescopic cylinder, a fixed pin plate, a movable pin plate, a pin assembly, and a separation limiting plate. The cylinder body of the sliding cylinder is fixedly connected to the fixed plate. The worktable of the sliding cylinder is fixedly connected to the fixed end of the vertical telescopic cylinder. The fixed pin plate is fixedly connected to the end of the vertical telescopic cylinder away from the sliding cylinder. The movable pin plate is fixedly connected to the free end of the vertical telescopic cylinder. The pin assembly includes a parallel fixed pin row and a separation pin row, with the separation pin row located below the fixed pin row. The fixed pin array is fixedly installed on the fixed pin plate, the separating pin array is fixedly installed on the movable pin plate, the separating limiting plate is fixedly connected to the bottom surface of the fixed plate, the separating limiting plate is located below the central hole, and a vertical strip-shaped separating groove is provided on the separating limiting plate. The sliding cylinder drives the vertical telescopic cylinder to move to the central hole, and at the same time, the pin array passes through the vertical strip-shaped opening of the splitting pipe and inserts into the compressed cotton fiber. The vertical telescopic cylinder drives the separating pin array to pass through the vertical strip-shaped opening and enter the vertical separating groove, while pulling some cotton fiber away from the splitting pipe.

6. The quantitative sampling device for cotton fiber detection according to claim 5, characterized in that: The number of separation modules is two, and the two separation modules are symmetrically arranged about the splitting pipe.

7. The quantitative sampling device for cotton fiber detection according to claim 6, characterized in that: The pin groups of the two separate modules are arranged alternately, one above the other.

8. The quantitative sampling device for cotton fiber detection according to claim 1, characterized in that: The metering module includes a metering housing, a tray, and a weighing sensor. The tray and the weighing sensor are placed inside the metering housing. The top of the metering housing has an opening for cotton fibers to enter. The weighing sensor is located below the tray. The tray is used to receive a portion of the cotton fibers separated from the compressed cotton fibers. The weighing sensor is used to collect the weight data of the cotton fibers on the tray.

9. The quantitative sampling device for cotton fiber detection according to claim 8, characterized in that: The conveying module includes a first conveying pipe, a second conveying pipe, a first suction fan, and a second suction fan. One end of the first conveying pipe is connected to and communicates with the metering housing, and the other end is used to connect to and communicate with the next detection device. One end of the second conveying pipe is connected to and communicates with the metering housing, and the other end is connected to and communicates with the waste cotton box. The first suction fan is connected to the first conveying pipe, and the second suction fan is connected to the second conveying pipe.

10. The quantitative sampling device for cotton fiber detection according to claim 1, characterized in that: The bottom of the frame is fitted with casters.

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