Equipment and method for measuring fibrillation degree of lyocell short fibers

Abstract

The invention provides equipment and a method for measuring the fibrillation degree of lyocell short fibers. The equipment comprises a machine body; the roller shaft is rotationally connected with the machine body; the driving mechanism is connected with the end part of the roller shaft; the bracket is connected with the machine body; the upper clamp is clamped at the upper end of the lyocell short fiber; the lower clamp is clamped at the lower end of the lyocell short fiber; the channel is arranged at the bottom of the operation window and is used for collecting the fallen lower clip; the photoelectric switches are distributed in the length direction of the channel; and the control unit is electrically connected with the driving mechanism, is used for recording the starting and stopping duration of the driving mechanism and recording the number of turns of rotation of the roll shaft, is also electrically connected with each photoelectric switch, and is used for recording the times of triggering the clamping and controlling the driving mechanism to be closed. According to the technical scheme, an experimenter only needs to clamp the upper clamp and the lower clamp at the two ends of the lyocell short fiber, fix the upper clamp and the support to each other and set experiment parameters through the control unit, and then the control unit can automatically obtain needed experiment data through starting of the driving mechanism.

Description

Technical Field

[0001] The present invention generally relates to the field of physical testing equipment, and in particular to an equipment and method for determining the fibrillation degree of lyocell staple fibers. Background Art

[0002] Lyocell fiber is a type of regenerated fiber. It is made from plant-derived wood pulp and is made into cellulose fiber through solvent spinning. It is then spun into textiles and enters the consumer market. Its products can be completely decomposed in the soil. The NMMO solvent used in production is non-toxic and pollution-free and can be recycled. The entire fiber production process is green and environmentally friendly, and the solvent recovery rate can reach more than 99%. Therefore, Lyocell fiber is called the "21st century green fiber."

[0003] The application number is: CN202110019436.5, which discloses a measuring device and method for the fibrillation degree of lyocell fiber, which includes a frame, a pressure roller is rotatably connected in the frame, and a motor for driving the pressure roller to rotate is arranged at one end of the pressure roller. When measuring the fibrillation degree of lyocell fiber, the white poplin cloth needs to be soaked in water and laid flat on the pressure roller, and then the test fiber is cut into 30cm long, one end is fixed on the frame, and the other end is loaded with 9.4g, the fiber is pressed against the roller surface white silk cloth, the motor is turned on, and the time for the fiber to break by friction is counted with a stopwatch.

[0004] This requires the experimenters to manually record the test data of each short fiber using a stopwatch, and the degree of automation in the process is not high. Summary of the invention

[0005] According to the present invention, in view of the problems existing in the prior art, a device for measuring the fibrillation degree of lyocell staple fibers is provided. The invention comprises: a machine body, one side of which is provided with an operation window; a roller shaft, which is horizontally located in the operation window, and whose two ends are rotatably connected to the machine body, and whose outer peripheral surface is fixed with a friction medium; a driving mechanism, which is located in the machine body and is mutually connected with the end of the roller shaft; a bracket, which is horizontally supported above the roller shaft and is mutually connected with the machine body; an upper clamp, which is clamped at the upper end of the lyocell staple fiber and fixed on the bracket; a lower clamp, which is clamped at the lower end of the lyocell staple fiber and makes the lyocell staple fiber stick to the surface of the friction medium; a channel, which is opened at the bottom of the operation window and is used to collect the dropped lower clamp; a plurality of photoelectric switches are provided and evenly distributed along the length direction of the channel, and the transmitting end of the switch points to the opposite side of the channel; a control unit, which is located in the machine body and is electrically connected to the driving mechanism, and is used to record the start and stop duration of the driving mechanism, and the number of rotations of the roller shaft, and is also electrically connected to each of the photoelectric switches, and is used to record the number of times the lower clamp is triggered and control the driving mechanism to be closed. With the above-mentioned technical features, the experimenter only needs to set the upper clamp and the lower clamp at the two ends of the lyocell staple fiber, fix the upper clamp and the bracket to each other, and set the experimental parameters through the control unit. Then, by starting the driving mechanism, the control unit can automatically obtain the required test data. Compared with the traditional manual recording, it not only saves manpower greatly, but also improves the measurement accuracy, reduces the test errors of manual recording, and greatly improves the final test efficiency by reducing the complicated manpower operations.

[0006] In some embodiments, the bracket is provided with a plurality of wedge-shaped grooves for clamping the upper clamp at intervals along the length direction of the bracket, and a clearance channel connected with the wedge-shaped groove for accommodating the lyocell staple fibers. Thus, the wedge-shaped groove clamps the upper clamp, and the wedge-shaped structure fits the upper clamp more closely, so that the force on the upper clamp is more stable. With the rotation of the roller shaft, a downward force is applied to the lyocell staple fibers, so that the upper clamp fits more closely with the inner wall of the wedge-shaped groove. The greater the force, the greater the force of the two clamping arms of the upper clamp toward the middle, thereby improving the stability of fixing the lyocell staple fibers.

[0007] In some embodiments, a plug hole is provided on the bottom wall of the wedge-shaped groove, and a limiter is inserted in the plug hole. The limiter is inserted in the gap of the upper clamp to limit the separation of the upper clamp from the wedge-shaped groove. Therefore, the detachable connection between the limiter and the plug hole will not hinder the fixation of the upper clamp and the bracket. Moreover, through the installation of the limiter, after the lyocell staple fibers are worn and broken, the limiter limits the separation of the upper clamp from the wedge-shaped groove, thereby reducing the separation of the upper clamp from the bracket, triggering the photoelectric switch, and thus affecting the accuracy of the final experimental detection.

[0008] In some embodiments, after the stopper and the insertion hole are plugged into each other, they do not contact each other with the upper clamp. Therefore, as the force of the lyocell staple fibers on the upper clamp increases, the upper clamp and the inner wall of the wedge-shaped groove are more closely fitted, thereby increasing the stability of the upper clamp fixing the lyocell staple fibers. The stopper and the upper clamp do not contact each other, which, on the one hand, limits the separation of the upper clamp and the wedge-shaped groove, and on the other hand, ensures the close fit between the upper clamp and the inner wall of the wedge-shaped groove, and does not hinder the deformation caused by the fit between the upper clamp and the inner wall of the wedge-shaped groove, thereby ensuring the stability of the force on the upper clamp.

[0009] In some embodiments, a plurality of partitions are vertically arranged inside the channel to form a plurality of grids of equal width inside the channel, and the photoelectric switch is fixed on one side of the grid, thereby increasing the stability of the photoelectric switch triggered by the lower clip falling and improving the accuracy of the final detection.

[0010] In some embodiments, a guide rod is horizontally arranged above each partition, and one end of the guide rod is fixed to one side of the channel. Thus, the guide rod limits the swing of the lyocell staple fiber under force, thereby limiting the direction in which the lower clamp falls, ensuring the stability of the lower clamp triggering the photoelectric switch, and also facilitating the experimenter to judge and control the length of the lyocell staple fiber, so as to avoid the lower clamp being far away from the photoelectric switch, thereby increasing the experimental error.

[0011] In some embodiments, a gap is left between the other end of the guide rod and the channel side wall, so that if the broken lyocell staple fibers are wound around the guide rod, the gap at one end of the guide rod facilitates the removal of the lyocell staple fibers, thereby improving the removal efficiency.

[0012] In some embodiments, a ring plate is coaxially disposed at each end of the roller shaft, the ring plate is rotatably connected to the machine body, the ends of the bracket are fixed to the ring plates on both sides, and a rotation reading is marked on one ring plate. Thus, by rotating the ring plate, not only the posture of the bracket can be controlled, so that the upper clamp and the bottom wall of the wedge groove are more closely fitted, and the retention is more stable; but also the range of the Lyocell staple fiber and the outer peripheral surface of the roller shaft can be adjusted to achieve the parameters required by the experiment.

[0013] In some embodiments, a display screen is also included, which is electrically connected to the control unit and is used to display the rotation speed of the drive mechanism, the number of rotations of the roller shaft, the number of triggering of the photoelectric switch, and the time taken from the start of the drive mechanism to each triggering of the photoelectric switch. In this way, the experimenter can set the experimental parameters and understand the experimental process, making the data more intuitive and specific.

[0014] A method for determining the fibrillation degree of lyocell staple fibers comprises the following steps: Preparation: soak the white silk cloth in water, spread it on the outer circumference of the roller, and fix it to the roller; Selecting materials: selecting lyocell staple fibers of equal length, and the number of lyocell staple fibers is at least 25, so that after the upper end of the lyocell staple fibers is fixed to the bracket, the lower end of the lyocell staple fibers exceeds the guide rod and does not trigger the photoelectric switch; The fixing frame is configured to clamp the upper clamp and the lower clamp at the two ends of the lyocell staple fiber respectively, and the upper clamp is clamped in the wedge-shaped groove of the bracket, and the upper clamp is stably fixed in the wedge-shaped groove of the bracket by plugging the limiter into the plug hole; the lower clamp falls naturally and is located on one side of a guide rod; Positioning, rotating the ring plate, driving the bracket to rotate, adjusting the contact area between each lyocell staple fiber and the white silk cloth; Setting parameters, setting the rotation speed of the driving mechanism, and the amount of lyocell staple fibers; Start and calculate, start the driving mechanism, record the number of rotations of the roller shaft, and the number of triggering times and time of the photoelectric switch triggered by the lower clamp falling. When the number of lower clamp falling times reaches the set number of Lyocell staple fibers, control the driving mechanism to stop, and analyze the degree of fibrillation of the Lyocell staple fibers through the internal algorithm of the control unit.

[0015] It can be seen from the above steps that, with the equipment for determining the fibrillation degree of lyocell staple fibers, the experimenter only needs to fix the material on the frame, set the necessary test parameters, and start the driving mechanism through the control unit. The rest of the work is evenly performed by the equipment itself, which greatly improves the efficiency of the detection without the need for human intervention, and also directly improves the precision and accuracy of the detection.

[0016] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure schematic diagram of a device for measuring the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown; Figure 2 A schematic diagram of a method for fixing lyocell staple fibers in a device for determining the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown; Figure 3 A schematic diagram of a support structure in a device for measuring the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown; Figure 4 A schematic diagram of the bottom structure of an operating window in a device for measuring the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown; Figure 5A schematic flow chart of a method for determining the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown.

[0018] Explanation of symbols 1. Machine body; 11. Display screen; 12. Operation window; 13. Roller; 14. Ring plate; 15. Passage; 16. Opening; 2. Bracket; 21. Wedge-shaped groove; 22. Make way passage; 23. Socket; 3. Upper clamp; 4. Lower clamp; 5. Limiting piece; 51. Connecting part; 52. Limiting part; 6. Partition; 61. Grille; 7. Photoelectric switch; 8. Guide rod. DETAILED DESCRIPTION

[0019] Hereinafter, preferred embodiments (or implementation modes) of the present invention will be described in detail with reference to the accompanying drawings.

[0020] The present invention provides a device and method for measuring the fibrillation degree of lyocell staple fibers. The device comprises a machine body 1, a roller shaft 13 is horizontally arranged on one side of the machine body 1, a driving mechanism for driving the roller shaft 13 to rotate around its axis is also arranged in the machine body 1, a bracket 2 is horizontally arranged on the roller shaft 13, and the upper end of the lyocell staple fibers can be fixed, the middle part of the lyocell staple fibers is attached to the friction medium outside the roller shaft 13, and the lower end of the lyocell staple fibers is clamped with a lower clamp 4, and the machine body 1 is provided with a photoelectric switch 7 on the path where the lower clamp 4 falls, and the driving mechanism is electrically connected to a control power supply uniformly arranged in the machine body 1, so that the time recorded by the lower clamp 4 triggering the photoelectric switch 7 can be realized by the number of rotations of the roller shaft 13, the rotation speed, and the friction fracture of the lyocell staple fibers, and then the test steps of preparation, material selection, frame fixing, positioning, parameter setting, startup and calculation are matched, so that the fibrillation degree of the lyocell staple fibers can be automatically measured, which not only improves the measurement efficiency, but also improves the measurement accuracy.

[0021] Reference below Figure 1-Figure 5 An apparatus and method for determining the fibrillation degree of lyocell staple fibers according to the present invention are described.

[0022] Figure 1 The overall structure diagram of a device for measuring the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown. Figure 1As shown, a device for determining the fibrillation degree of lyocell staple fibers provided in this embodiment includes a body 1, a display screen 11 is provided on the front side of the body 1, an operation window 12 is provided on the body 1 below the display screen 11, a roller 13 is horizontally provided in the operation window 12, and both ends of the roller 13 are rotatably connected to the body 1, and a driving mechanism for driving the roller 13 to rotate around its central axis is also provided inside the body 1, and the driving mechanism can be a driving motor, and the output shaft of the driving motor drives the roller 13 to rotate; or it can be a connection method between the driving motor and the reducer, so as to intelligently control the rotation speed of the roller 13, and the driving mechanism is a prior art in this field, which will not be described here. In actual work, the outside of the roller 13 also needs to be fixed with a friction medium, and the friction medium is generally a soaked white silk cloth, which is spread on the outer wall of the roller 13 and fixed to the roller 13.

[0023] A ring plate 14 is sleeved on each end of the roller shaft 13. The ring plate 14 rotates coaxially with the roller shaft 13, and the ring plate 14 is close to the side wall of the machine body 1 on the corresponding side and is connected to the machine body 1 for rotation. A bracket 2 is horizontally arranged between the two ring plates 14. The bracket 2 is rod-shaped, and its two ends are respectively fixed on the side wall of the ring plate 14, so that the relative position of the bracket 2 and the roller shaft 13 can be adjusted by rotating the ring plate 14 and the machine body 1. Angle scale lines are also arranged on the circumference of one side of the ring plate 14 to facilitate the experimenter to adjust the experimental parameters.

[0024] Figure 2 FIG. 1 is a schematic diagram showing a method for fixing lyocell staple fibers in a device for determining the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention. Figure 2 As shown, the upper end of the lyocell staple fiber is clamped with an upper clamp 3, and the lower end is clamped with a lower clamp 4. The upper clamp 3 and the lower clamp 4 have the same structure, so as to facilitate the operation of the experimenter and improve the operation efficiency of the experimenter. When the upper clamp 3 is fixed, the lower clamp 4 can be used as a counterweight to keep the lyocell staple fiber in a straight state.

[0025] Figure 3 The schematic diagram of the structure of the support 2 in the device for measuring the fibrillation degree of lyocell staple fibers provided by the embodiment of the present invention is shown. Figure 3 As shown, the bracket 2 is provided with a wedge-shaped groove 21 for clamping the upper clamp 3. In order to reduce the error of the experiment and improve the accuracy of the experiment, a plurality of wedge-shaped grooves 21 are equidistantly arranged along the length direction of the bracket 2. In this embodiment, the number of wedge-shaped grooves 21 is 30 as an example; the upper and lower ends of each wedge-shaped groove 21 are both provided with an opening 16 to facilitate the placement of the upper clamp 3; and the bracket 2 is provided with a clearance channel 22 at the bottom of each wedge-shaped groove 21 to allow the lyocell staple fibers to pass through.

[0026] Each wedge-shaped groove 21 is provided with an insertion hole 23 on its bottom wall. The insertion hole 23 is provided in the gap area closed by the upper clamp 3. When the upper clamp 3 is inserted into the wedge-shaped groove 21, a rod-shaped stopper 5 can be inserted into the insertion hole 23. The stopper 5 includes a plug-in portion 51 plugged into the insertion hole 23 and a stopper 52 located at the tail of the plug-in portion 51. The size of the stopper 52 is larger than that of the plug-in portion 51, which is not only convenient for manual operation, but also limits the sliding of the upper clamp 3 on the stopper 52. Therefore, after the lyocell staple fibers are worn and broken, the reverse elastic force of the lyocell staple fibers is applied to the upper clamp 3, which easily causes the upper clamp 3 to separate from the wedge-shaped groove 21. Therefore, the stopper 5 can steadily fix the upper clamp 3 inside the wedge-shaped groove 21. Moreover, when the stopper 5 and the insertion hole 23 are plugged into each other, the stopper 5 does not contact the upper clamp 3 itself. The upper clamp 3 is subjected to the downward force exerted by the lyocell staple fibers, so that the upper clamp 3 is closely attached to the inner wall of the wedge-shaped groove 21, and also slightly deformed. The two clamping arms are more tightly clamped under the guidance of the side wall of the wedge-shaped groove 21, and the clamp 4 itself has a tendency to move toward the clearance channel 22. The stopper 5 does not contact the upper clamp 3 itself, which ensures the normal deformation space of the upper clamp 3, thereby limiting the separation of the upper clamp 3 from the bracket 2, and also ensures the stability of the upper clamp 3 clamping and fixing the lyocell staple fibers. Moreover, as the ring plate 14 controls the rotation of the bracket 2, the degree of attachment between the upper clamp 3 and the wedge-shaped groove 21 can also be adjusted, thereby improving the stability of the retention of the upper clamp 3 and the wedge-shaped groove 21.

[0027] Figure 4 The bottom structure diagram of the operating window 12 in the device for measuring the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown. Figure 4 As shown, a strip-shaped channel 15 is provided at the bottom of the operation window 12 along the length direction of the roller shaft 13, and a plurality of mutually parallel partitions 6 are vertically arranged in the channel 15, and adjacent partitions 6 are arranged at intervals, and the two ends of the partitions 6 are respectively fixedly connected to the inner walls of the two sides of the channel 15, so that a plurality of equally large grids 61 are formed in the channel 15, and each grid 61 is located directly below the wedge-shaped groove 21, thereby limiting the area where the lower clip 4 falls. A photoelectric switch 7 is fixed on one side of each grid 61, and the emission end of the photoelectric switch 7 faces the other side of the grid 61, thereby ensuring the accuracy of the triggering of the photoelectric switch 7.

[0028] In order to reduce the possibility of the lower clamp 4 being stuck at the port of the grid 61, a guide rod 8 is horizontally arranged above each partition 6, one end of the guide rod 8 is fixed to the inner wall of the channel 15, and the other end of the guide rod 8 is spaced apart from the other side of the channel 15. When the upper clamp 3 and the bracket 2 are fixed to each other, the lower clamp 4 is located in the area between the adjacent guide rods 8. As the roller 13 rotates, the guide rod 8 limits the swing amplitude of the lower clamp 4, thereby ensuring that each lower clamp 4 is located in the corresponding area of ​​the port of the grid 61. When the lyocell staple fiber is broken, the lower clamp 4 falls and triggers the photoelectric switch 7. If the lyocell staple fiber is wound around the guide rod 8, since there is a gap between one end of the guide rod 8 and the side wall of the channel 15, the wound lyocell staple fiber can be separated from the guide rod 8, thereby improving the removal efficiency of the lyocell staple fiber.

[0029] refer to Figure 1 As shown, the front side of the body 1 is also provided with an opening 16 which is interconnected with the channel 15 , so that after the lower clip 4 falls into the channel 15 , it will fall from the opening 16 to the front side of the body 1 , so as to be collected and recycled.

[0030] A control unit is also provided in the body 1. The control unit can be a single chip microcomputer or a computer. The control unit is electrically connected to the driving mechanism and can be used to control the output power of the driving mechanism, adjust the rotation speed of the roller 13, and record the number of rotations of the rotating shaft; it is also electrically connected to each photoelectric switch 7 and is used to record the number of times the photoelectric switch 7 is triggered, and the time taken from the start of the driving mechanism to the triggering of the photoelectric switch 7, so as to input the algorithm integrated in the control unit to calculate the degree of fibrillation of the lyocell staple fibers; the control unit is also electrically connected to the display screen 11 and is used to display the rotation speed of the driving mechanism, the number of rotations of the roller 13, the number of times the photoelectric switch 7 is triggered, and the time taken from the start of the driving mechanism to the triggering of each photoelectric switch 7, so that the experimenter can intuitively input parameters and intuitively read data.

[0031] Figure 5 The schematic diagram of the process of determining the fibrillation degree of lyocell staple fibers provided by an embodiment of the present invention is shown. Figure 5 As shown, a method for determining the fibrillation degree of lyocell staple fibers comprises the following steps: S1: Preparation, soaking the white silk cloth in water, spreading it on the outer circumference of the roller 13, and fixing the soaked white silk cloth and the roller 13 to each other; S2: Selecting materials, selecting lyocell staple fibers of equal length, and the number of lyocell staple fibers is at least 25, so that the length of the lyocell staple fibers is such that after the upper end of the lyocell staple fibers is fixed to the bracket 2, the lower end of the lyocell staple fibers exceeds the guide rod 8 and does not trigger the photoelectric switch 7; S3: Fixing the frame, the upper clamp 3 and the lower clamp 4 are respectively clamped at the two ends of the lyocell staple fiber, and the upper clamp 3 is clamped in the wedge-shaped groove 21 of the bracket 2, and the upper clamp 3 is stably fixed in the wedge-shaped groove 21 of the bracket 2 by plugging the stopper 5 into the plug hole 23; the lower clamp 4 falls naturally and is located in the space between the adjacent guide rods 8; S4: Positioning, rotating the ring plate 14, driving the bracket 2 to rotate, and adjusting the contact range between each lyocell staple fiber and the white silk cloth; S5: Setting parameters, setting the rotation speed of the driving mechanism, and the number of times the photoelectric switch 7 is triggered to stop the driving mechanism from working; S6: Start and calculate, start the driving mechanism, record the number of rotations of the roller 13, and the number of triggering times and time of the photoelectric switch 7 triggered by the lower clamp 4 falling. When the number of times the lower clamp 4 falls reaches the preset number of triggering times of the photoelectric switch 7, the driving mechanism automatically stops and analyzes the degree of fibrillation of the Lyocell staple fibers through the internal algorithm of the control unit.

[0032] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for measuring the fibrillation degree of lyocell staple fibers, characterized in that: include: The machine body (1) has an operation window (12) on one side; A roller shaft (13) is horizontally located in the operating window (12), with both ends being rotatably connected to the machine body (1), and a friction medium being fixed on its outer peripheral surface; A driving mechanism, which is located in the machine body (1) and is connected to the end of the roller shaft (13); A support (2) is horizontally supported above the roller shaft (13) and is connected to the machine body (1); An upper clamp (3) is clamped on the upper end of the lyocell staple fibers and fixed on the support (2); A lower clamp (4) is clamped at the lower end of the lyocell staple fibers and allows the lyocell staple fibers to be attached to the surface of the friction medium; A channel (15) is provided at the bottom of the operating window (12) and is used to collect the fallen lower clip (4); A plurality of photoelectric switches (7) are provided and evenly distributed along the length direction of the channel (15), and the emission ends of the photoelectric switches (7) point to the opposite side of the channel (15); A control unit is located in the machine body (1) and is electrically connected to the drive mechanism, and is used to record the duration of the start and stop of the drive mechanism, and the number of revolutions of the roller shaft (13). It is also electrically connected to each of the photoelectric switches (7) and is used to record the number of times the lower clamp (4) is triggered and to control the drive mechanism to shut down.

2. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 1, characterized in that: The support (2) is provided with a plurality of wedge-shaped grooves (21) for clamping the upper clamp (3) at intervals along the length direction of the support (2), and a clearance channel (22) connected to the wedge-shaped grooves (21) for accommodating lyocell staple fibers.

3. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 2, characterized in that: An insertion hole (23) is provided on the bottom wall of the wedge-shaped groove (21), a limiting member (5) is inserted into the insertion hole (23), and the limiting member (5) is inserted into the gap of the upper clamp (3) to limit the separation of the upper clamp (3) from the wedge-shaped groove (21).

4. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 3, characterized in that: After the limiting member (5) and the insertion hole (23) are plugged into each other, they do not contact the upper clamp (3).

5. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 1, characterized in that: A plurality of partitions (6) are vertically arranged inside the channel (15), so that a plurality of grids (61) of equal width are formed inside the channel (15), and the photoelectric switch (7) is fixed on one side of the grid (61).

6. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 5, characterized in that: A guide rod (8) is horizontally arranged above each partition (6), and one end of the guide rod (8) is fixed to one side of the channel (15).

7. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 6, characterized in that: A gap is left between the other end of the guide rod (8) and the side wall of the channel (15).

8. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 1, characterized in that: A ring plate (14) is coaxially arranged at each end of the roller shaft (13), and the ring plate (14) is rotatably connected to the machine body (1). The ends of the bracket (2) are fixed to the ring plates (14) on both sides, and a rotation reading is marked on one side of the ring plate (14).

9. The device for measuring the fibrillation degree of lyocell staple fibers according to claim 1, characterized in that: It also comprises a display screen (11) which is electrically connected to the control unit and is used to display the rotation speed of the driving mechanism, the number of rotations of the roller (13), the number of triggering of the photoelectric switch (7), and the time taken from the start of the driving mechanism to the triggering of each photoelectric switch (7).

10. A method for measuring the fibrillation degree of lyocell staple fibers, using the device for measuring the fibrillation degree of lyocell staple fibers according to any one of claims 1 to 8, characterized in that: The steps include: Preparation: soaking the white silk cloth in water, spreading it on the outer peripheral surface of the roller (13), and fixing it to the roller (13); Selecting materials, selecting lyocell staple fibers of equal length, and at least 25 lyocell staple fibers, so that the length of the lyocell staple fibers is such that after the upper ends of the lyocell staple fibers are fixed to the bracket (2), the lower ends of the lyocell staple fibers exceed the guide rod (8) and do not trigger the photoelectric switch (7); The fixing frame is configured to clamp the upper clamp (3) and the lower clamp (4) at the two ends of the lyocell staple fibers respectively, and the upper clamp (3) is clamped in the wedge-shaped groove (21) of the bracket (2), and the upper clamp (3) is fixed in the wedge-shaped groove (21) of the bracket (2) by plugging the stopper (5) into the plug hole (23); the lower clamp (4) falls naturally and is located on one side of a guide rod (8); Positioning, rotating the ring plate (14), driving the bracket (2) to rotate, and adjusting the contact area between each lyocell staple fiber and the white silk cloth; Setting parameters, setting the rotation speed of the driving mechanism, and the amount of lyocell staple fibers; Start and calculate, start the driving mechanism, record the number of rotations of the roller (13), and the number of triggering times and time used by the photoelectric switch (7) triggered by the lower clamp (4) falling, and when the number of times the lower clamp (4) falls reaches the set number of Lyocell staple fibers, control the driving mechanism to stop, and analyze the degree of fibrillation of the Lyocell staple fibers through the internal algorithm of the control unit.

Images