CN115825160A - Evaluation device and method for weavability of carbon fiber - Google Patents

Abstract

The invention discloses a device and a method for evaluating weavability of carbon fiber, which comprises a support frame, wherein the support frame is provided with a traction mechanism, a die opening and closing simulation mechanism, a beating-up simulation mechanism and a resistance recorder; the traction mechanism comprises two fixers respectively positioned at two ends of the support frame, the carbon fiber is connected with the two fixers, and the carbon fiber is electrically communicated with the two fixers; the opening and closing port simulation mechanism comprises a heald frame which is arranged in a lifting way, and carbon fibers between the two fixers penetrate through the heald frame; the beating-up simulation mechanism comprises a reed which reciprocates along the straight line where the carbon fiber is located, and the carbon fiber between the two fixers passes through the reed; the resistance recorder is connected with two fixers corresponding to the same carbon fiber in a closed circuit mode through a lead. The method has the advantages that the abrasion degree of the carbon fiber is measured in real time by monitoring the resistance value change of the carbon fiber in the friction process on line by utilizing the conductive characteristic of the carbon fiber, so that the weavability of the carbon fiber is quickly and accurately detected.

Description

Evaluation device and method for weavability of carbon fiber

Technical Field

The invention relates to the technical field of carbon fibers, in particular to a device and a method for evaluating weavability of carbon fibers.

Background

Carbon fibers are generally prepared by high-temperature carbonization of organic fibers, have many excellent properties such as high specific modulus, high specific strength, high temperature resistance, good conductivity and the like, and are widely applied to the fields of buildings, automobiles, aerospace and the like. The contact friction action between carbon fiber and between carbon fiber and reed is increased in the weaving process of carbon fiber, and the carbon fiber is very easy to damage or even break under the complex and continuous friction action. Along with the weaving process, the surface of the carbon fiber can gradually generate hairiness, and if the hairiness is too long, the carbon fiber can be entangled with each other, so that the opening is not clear. Meanwhile, the number of single fibers in the cross section of the carbon fiber yarn body can be reduced, the gap is increased, the yarn body structure can be loosened due to the slippage of the single fibers, and the consistency of the breakage and the extension of different single fibers is greatly reduced. These factors, which lead to the decrease of the wear resistance of the carbon fibers during weaving, also deteriorate the ability of the carbon fibers to withstand various external mechanical forces, so that the carbon fibers are more likely to break under subsequent friction and during periodic opening and beating-up movements on a loom, thereby seriously affecting the weavability of the carbon fibers. Therefore, the weaving performance of the carbon fiber is mainly determined by the wear resistance of the carbon fiber material and the contact friction condition during weaving.

Scholars have studied on the damage problem during the weaving of the carbon fiber, and some study mainly focus on the influence of the type, the surface state, the fabric structure parameters and the like of the carbon fiber on the abrasion condition of the carbon fiber; some have preliminarily discussed the mechanism of carbon fiber friction damage. Generally, the weavability of the carbon fiber is mainly studied by the methods of flat plate method, capstan method, etc., and in these methods, the friction mode between the carbon fibers and between the carbon fiber and the metal is greatly different from the actual state of the carbon fiber during weaving, for example, the carbon fiber is in a suspended state during weaving. The Yankee who is the university of Tianjin industry, and the like, studied the frictional wear behavior of carbon fibers in weaving, and simulated the frictional wear between carbon fiber bundles and reed blades during weaving. However, the simulation process is simple, the difference from the actual weaving condition is large, and only the abrasion experiment of single carbon fiber can be carried out; furthermore, the abrasion condition of the carbon fiber under different factors needs to be characterized by measuring the reduction degree of the mechanical property of the carbon fiber after an abrasion experiment is carried out. In the study on a method for measuring the weavability of warp yarns during weaving disclosed in CN2015104792485 on 23/12/2015, a method for measuring the fraying degree of warp yarns during weaving is disclosed. Under the condition of no weft insertion, after the loom normally carries out shedding, beating-up, reeling-up and let-off motions and stops, a marking pen is adopted to divide the test warp into 3 areas which are respectively raw yarns (A), the breaking strength, breaking elongation, wear resistance and hairiness of three sections of yarns are respectively tested through a warp stop yarn (B) and harness wires and reed yarns (C), and then the test data of all parts of the warp are compared and analyzed to determine the weavability of the yarn. However, the method has the disadvantages that shutdown and sectional detection are required, and the detection mode is generally to test a single carbon fiber, so that the efficiency is poor, such as mechanical property detection, hairiness image forming detection and the like.

No matter which method is adopted for carrying out the abrasion experiment, in order to research the weavability of the carbon fiber, after the abrasion experiment, the carbon fiber needs to be tested according to indexes such as mechanical properties and the like before and after abrasion, and then the abrasion degree of the carbon fiber is represented through comparison calculation, so that the method is complicated. For example, a brute force test can generally only be performed in a single experiment, and a large number of parallel experiments are often required to achieve accuracy of the experimental results. In addition, because these methods cannot perform online detection, that is, the wear condition of the carbon fiber cannot be monitored in real time when the carbon fiber is subjected to a wear test, and the wear condition of the carbon fiber needs to be observed through performance tests such as mechanics after the wear test is completed, the wear degree of the carbon fiber cannot be controlled in real time under different test conditions, the weavability of the carbon fiber cannot be measured accurately, and only rough evaluation can be performed through comparison of the performance before and after the wear of the carbon fiber. Therefore, it is urgently needed to develop a high-efficiency and accurate characterization method for the abrasion condition and weavability of the carbon fiber.

Disclosure of Invention

Based on the defects in the prior art, the application discloses an evaluation device and method for weavability of carbon fibers, which utilize the characteristic that carbon fibers can conduct electricity and measure the abrasion degree of the carbon fibers in real time by monitoring the resistance value change of the carbon fibers in the friction process on line, thereby realizing the rapid and accurate detection of weavability of the carbon fibers.

In order to achieve the above object, the present invention proposes the following technical solutions.

A carbon fiber weavability evaluation device is characterized by comprising a support frame, wherein a traction mechanism, an opening and closing die simulation mechanism, a beating-up simulation mechanism and a resistance recorder are arranged on the support frame;

the traction mechanism comprises two fixers respectively positioned at two ends of the support frame, the carbon fiber is connected with the two fixers, and the carbon fiber is electrically communicated with the two fixers;

the opening and closing port simulation mechanism comprises a heald frame which is arranged in a lifting mode, and carbon fibers between the two fixing devices penetrate through the heald frame;

the beating-up simulation mechanism comprises a reed which reciprocates along the straight line where the carbon fiber is located, and the carbon fiber between the two fixers passes through the reed;

and the resistance recorder is connected with two fixers corresponding to the same carbon fiber in a closed circuit mode through a lead.

The fixer at the two ends of the support frame realizes straightening of carbon fibers, the opening and closing die simulation mechanism and the beating-up simulation mechanism are used for simulating the friction condition during actual weaving, the resistance value of the carbon fibers can be measured in real time while the opening and closing die simulation mechanism and the beating-up simulation mechanism work, continuous online measurement is realized, and compared with the traditional mechanical detection or imaging observation of the flying feather condition, the efficiency is higher, and the detection result is more visual.

Preferably, the fixer comprises a base and a fastener on the base, the support frame and the base are made of insulating materials, and the fastener is made of conductive materials. The fastener is used for compressing tightly the carbon fiber and as the conductive connection of carbon fiber, realizes the reliable electrically conductive of carbon fiber.

As preferred, the base adopts rectangular shape structure, is equipped with the fastener that a plurality of interval set up on the base, and the shape of fastener is the cuboid, is equipped with the ear bolt on the fastener, is equipped with the screw hole of cooperation ear bolt on the base. When the fastener is in the ear bolt and the screw hole cooperation, the fastener is compressed tightly on the base to realize compressing tightly, convenient operation of carbon fiber.

Preferably, the two heald frames with the same specification are arranged, the moving directions of the two heald frames are opposite, the opening and closing die simulation device further comprises a lifting sliding table, a lifting stepping motor and a lifting controller which are used for controlling the two heald frames are arranged on the lifting sliding table, and the heald frames are connected with the lifting stepping motor through a transmission mechanism. Two heald frames can move in opposite directions and back to back at a certain frequency through parameter setting control of the lifting controller, the moving speed and the moving time interval can be controlled, and the simulation of an opening and closing port during the weaving of the carbon fiber is realized.

Preferably, the beating-up simulation mechanism comprises a movable sliding table horizontally arranged along the support frame, the reed is arranged on the movable sliding block and is provided with a movable stepping motor and a movable controller, and the movable stepping motor is connected with the reed through a transmission mechanism. The reed can be driven to reciprocate by the movable stepping motor, the movement speed, the time and the like of the reed can be adjusted by the movable controller, and the beating-up motion of the reed during the simulation weaving is realized.

Preferably, the width of the reed and the width of the heald frame both correspond to the width of the base, a plurality of heddles are arranged on the heald frame, heald eyes are arranged in the middle of the healds, the reed comprises a plurality of reed blades arranged at intervals, and carbon fibers are arranged in gaps between the adjacent reed blades. When detecting, the carbon fiber passes the heddle eye on two adjacent heddles on two heald frames in proper order to pass the clearance between the adjacent reed, realize reliable switching bush and beat-up simulation, the device disclosed in this application can accomplish many carbon fibers and wear and resistance detection experiment simultaneously. In the prior art, the imaging detection and the mechanical property inspection of the carbon fiber can be generally finished by one piece at a time, and the application can finish a plurality of pieces simultaneously and has high detection efficiency.

Preferably, the number of the carbon fibers is 1 to 30, and different carbon fibers correspond to different heddle eyes respectively. The carbon fiber is independently arranged, a plurality of carbon fibers can be simultaneously measured, and the measurement efficiency is high.

Preferably, the metal clips on the resistance recorder are a positive electrode group and a negative electrode group respectively, the positive electrode group comprises a plurality of parallel positive electrode metal clips, and the negative electrode group comprises a plurality of parallel negative electrode metal clips. A plurality of carbon fibers can be connected in parallel, and parallel measurement of the plurality of carbon fibers is realized.

A method for evaluating weavability by the apparatus for evaluating weavability of carbon fibers, comprising the steps of:

A. the carbon fiber penetrates through the heald frame and the reed, two ends of the carbon fiber are respectively fixed on two fixing devices at two ends of the supporting frame, and the carbon fiber is straightened;

B. respectively connecting metal clips on the resistance recorder to fasteners at two ends of the same carbon fiber, forming a circuit loop through the carbon fiber, and measuring the resistance value of the carbon fiber in real time;

C. setting moving distance, speed and time interval parameters of the heald frame and the reed through a lifting controller and a moving controller;

D. and driving the heald frame and the reed to move, carrying out a carbon fiber friction test, and observing the resistance change of the carbon fiber, wherein the faster the resistance value is increased, the poorer the weavability of the carbon fiber is.

This application compares the resistance value that traditional technique had proposed through the carbon fiber for the first time and represents the friction degree that the carbon fiber received in the simulation weaving, realizes quick and accurate evaluation of carbon fiber weavability.

Preferably, two heald frames are provided, and in the step A, each carbon fiber alternately penetrates through the eyelets of the corresponding healds of the two heald frames. The simulation weaving situation is closer to the actual weaving situation, and the reliability of the test result is improved.

The invention has the beneficial effects that:

firstly, put forward for the first time and realize judging the weavability of carbon fiber through the measurement of carbon fiber resistance value in the friction test process, improve the efficiency of carbon fiber weavability evaluation.

And secondly, by utilizing the testing method developed by the experiment, the abrasion state of the carbon fiber is still controllable even under different experimental conditions by monitoring the resistance change of the carbon fiber in the friction test process in real time, and the abrasion degree of the carbon fiber is represented by utilizing the resistance value or the change value of the resistivity, so that the weavability of the carbon fiber can be accurately represented, and the influence degree of different experimental conditions on the weavability of the carbon fiber and the like can be discussed.

Drawings

FIG. 1 is a schematic view of the structure of an evaluation apparatus disclosed in the present invention.

Fig. 2 is a schematic structural view of a holder according to a first embodiment of the present invention.

Figure 3 is a diagrammatic illustration of the construction of a heddle frame according to the invention.

Fig. 4 is a schematic structural view of the opening/closing die simulation mechanism of the present invention.

Fig. 5 is a schematic structural view of a holder according to a second embodiment of the present invention.

FIG. 6 is a top view of the fastener and attachment block of FIG. 5 in engagement.

In the figure: the base 21 fastener 22 of the traction mechanism 2 of the support frame 1 opens and closes the heald frame 31 lifting slide table 32 lifting slide block 33 lifting slide block 34 double-thread lead screw 35 heald 36 heald eye 37 steel reed 4 moving slide table 41 moving slide block 42 moving slide block 43 moving lead screw 44 resistance recorder 5 carbon fiber 6 conductive block 7 positioning column 8 arc convex section 9 operation ear 10 connecting block 11 positioning groove 12 upper baffle plate 13 lower baffle plate 14.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

In the case of the example 1, the following examples are given,

as shown in fig. 1 to 4, an apparatus for evaluating weavability of carbon fiber comprises a support frame 1, and a traction mechanism 2, an opening and closing die simulation mechanism 3, a beating-up simulation mechanism and a resistance recorder 5 are provided on the support frame 1.

The traction mechanism 2 comprises two fixers respectively positioned at two ends of the support frame 1, each fixer comprises a base 21 and a fastener 22 on the base 21, the support frame 1 and the base 21 are made of insulating materials, the fasteners 22 are made of conductive materials, and the carbon fibers 6 are connected with the two fixers; the base 21 adopts a strip-shaped structure, and the lower end of the base 21 is fixedly connected with the support frame 1. Be equipped with the fastener 22 that a plurality of interval set up on the base 21, be equipped with the conducting block 7 of making by conducting material that corresponds with fastener 22 on the base 21, fastener 22's shape is the cuboid, is equipped with ear bolt 23 on the fastener 22, is equipped with the screw hole that the ear bolt 23 was taken in the cooperation on the base 21. The fastening piece 22 is provided with a through hole corresponding to the lug bolt 23, the lug bolt 23 penetrates through the through hole and then is connected with the threaded hole at the lower end, the lug bolt 23 is provided with a locking nut in a threaded connection mode, and after the lug bolt 23 is connected and locked with the threaded hole through the locking nut, the locking nut compresses the fastening piece 22 onto the conductive block 7, so that the fastening piece 22 and the carbon fiber are reliably conducted. The fastener is provided with a chamfer on the lower edge of the vertical carbon fiber. The screw hole is equipped with equidistant spaced a plurality of that is the straight line and arranges on base 21 upside, and the screw hole corresponds with the quantity of fastener 22. In practical application, each fastener 22 can be connected with one carbon fiber 6, and in order to ensure the reliability of the connection of the fastener 22 to the carbon fiber 6, the carbon fiber 6 can be wound on the fastener 22 for several circles and then the fastener 22 can be locked; the tension of the carbon fibers can be achieved by hanging the tension weight at two ends of the carbon fibers, and different carbon fibers can have the same tension force through the tension weight, so that the accuracy of evaluation on the weavability of the carbon fibers is improved.

The opening and closing port simulation mechanism 3 comprises a heald frame 31 arranged in a lifting way, and the carbon fiber 6 between two fixers passes through the heald frame 31; the heald frames 31 are provided with two heald frames 31 with the same specification, the two heald frames 31 are arranged in parallel, the motion directions of the two heald frames 31 are kept opposite, the opening and closing die simulation device further comprises a lifting sliding table 32, a lifting stepping motor 33 and a lifting controller which are used for controlling the two heald frames 31 are arranged on the lifting sliding table 32, and the heald frames 31 and the lifting stepping motor 33 are connected through a transmission mechanism. The vertical setting of lift slip table 32, the both sides of lift slip table 32 are equipped with elevator slide 34 respectively, and the interior rotation of lift slip table 32 is equipped with double-end lead screw 35, and two elevator slide 34 are located double-end lead screw 35's both ends respectively, and when lift step motor 33 drive double-end lead screw 35 rotated, two elevator slide 34 were driven to do relative or back of the body motion, heald frame 31 and elevator slide 34 fixed connection simultaneously. In order to improve the lifting stability of the heald frames 31, two sides of the two heald frames 31 are respectively provided with a lifting sliding table 32 and a lifting stepping motor 33, the lifting stepping motors 33 on the two sides run synchronously, and the lifting sliding blocks 34 on the two sides are connected into a whole. A plurality of heddles 36 are arranged on the heald frame 31. An upper baffle 13 and a lower baffle 14 are respectively arranged at the upper end and the lower end in the heald frame, an upper chute and a lower chute are respectively arranged on the upper baffle and the lower baffle, two ends of a heddle respectively penetrate through the upper chute and the lower chute, an upper sliding strip corresponding to the upper side of the upper baffle 13 is fixedly connected with the upper end of the heddle, a lower sliding strip corresponding to the lower side of the lower baffle 14 is fixedly connected with the lower end of the heddle, the transverse size of the upper sliding strip is larger than the width of the upper chute, the transverse size of the lower sliding strip is larger than the width of the lower chute, the upper sliding strip and the lower sliding strip straighten the heddle, and the heddle can realize position adjustment along with the sliding of the upper sliding strip and the lower sliding strip. The heddle 36 is provided with heddle eyes 37 in the middle, the number of the carbon fibers 6 is 1 to 30, and different carbon fibers 6 correspond to different heddle eyes 37 respectively. The lifting controller is used to set the speed, distance, time interval, etc. of the up-and-down movement of the heald frame 31.

The beating-up simulation mechanism comprises a reed 4 which reciprocates along the straight line where the carbon fiber 6 is located, and the carbon fiber 6 between the two fixers passes through the reed 4; the reed 4 comprises a plurality of reed blades arranged at intervals. Carbon fibers 6 are arranged in the gaps between adjacent reed wires. The width of the reed 4 and the width of the heald frame 31 both correspond to the width of the base 21. The beating-up simulation mechanism comprises a movable sliding table 41 horizontally arranged along the support frame 1, the reed 4 is provided with a movable stepping motor 42 and a movable controller, and the movable stepping motor 42 is connected with the reed 4 through a transmission mechanism. The reed 4 is arranged on the movable sliding table 41, the movable sliding block 43 is arranged on the movable sliding table 41 in a sliding mode, and the reed 4 is fixedly connected with the movable sliding block 43. The movable slider 43 is matched with a movable lead screw 44 through internal transmission threads, the movable lead screw 44 is rotatably arranged on the movable sliding table 41, and the movable lead screw 44 can controllably rotate through the movable stepping motor 42. The mobile controller is used for setting the speed, distance, time interval and the like of the left and right movement of the reed 4.

The resistance recorder 5 is connected with the fasteners 22 on the two holders corresponding to the same carbon fiber 6 in a closed circuit through a lead. The metal clips on the resistance recorder 5 are respectively a positive electrode group and a negative electrode group, the positive electrode group comprises a plurality of positive electrode metal clips which are connected in parallel, and the negative electrode group comprises a plurality of negative electrode metal clips which are connected in parallel. The positive metal clips correspond to the negative metal clips one by one. The metal clip adopts an alligator clip structure, and is clamped on a conductive block made of a conductive material. In order to improve the connection reliability of the metal clamp and the conductive block, the side face of the conductive block can be provided with a striped surface matched with the tooth shape of the metal clamp, so that the connection reliability of the metal clamp and the conductive block can be ensured, the contact area between the conductive block and the metal clamp can be increased through the striped surface, the connection resistance is reduced, and the accuracy of a measurement result is further improved.

In addition, in order to realize the circuit intercommunication of resistance record appearance and conducting block, can also adopt the form of bolt, the bolt includes conducting segment and insulating cladding section, the conducting segment and the resistance record appearance circuit connection of bolt, set up the jack of cooperation bolt on the conducting block, through holding insulating cladding section, can insert the conducting segment in the jack, realize the reliable circuit connection of resistance record appearance and conducting block, and the area of contact of bolt form is big, and resistance is little, be favorable to improving measuring result's accuracy.

In the case of the example 2, the following examples are given,

the utility model provides an evaluation device of carbon fiber weavability, embodiment 2 only lies in the fixer different with embodiment 1, as shown in fig. 5 and fig. 6, embodiment 2 also includes base 21 and fastener 22, the shape of fastener 22 is cylindrical, the lower extreme outside of fastener 22 is equipped with the reference column 8 that the bisymmetry set up, base 21 is last to be fixed to be equipped with connecting block 11 that electrically conductive material made, the border of connecting block 11 upwards an organic whole is equipped with arc protruding section 9, the downside one end of arc protruding section 9 is equipped with the constant head tank 12 that corresponds reference column 8, the shape of constant head tank 12 is "L" shape, the upper end of fastener 22 is fixed to be equipped with operation ear 10, rotation operation ear 10, the reliable compressing tightly of arc protruding section to the fastener is realized after the reference column stretches into the constant head tank bottom. Compared with the bolt tightening mode in the embodiment 1, the fastener 22 of the embodiment has the advantages of less rotation amount, rapidness in place, and certain pressure on the carbon fiber after in place, so that the detection result is more reliable when the carbon fiber with the same specification is tested.

In the case of the example 3, the following examples are given,

the weavability evaluation method based on the evaluation device for the weavability of the carbon fiber comprises the following steps:

A. the carbon fiber 6 penetrates through the heald frame 31 and the reed 4, two ends of the carbon fiber 6 are respectively fixed on two fixing devices at two ends of the support frame 1, and two ends of the carbon fiber 6 are straightened; the heald frames 31 are provided with two, and each carbon fiber 6 alternately passes through eyelets 37 of the two heald frames 31 corresponding to the healds 36.

B. Respectively connecting metal clips on the resistance recorder 5 to fasteners 22 at two ends of the same carbon fiber 6, forming a circuit loop through the carbon fiber 6, and measuring the resistance value of the carbon fiber 6 in real time;

C. the moving distance, speed and time interval parameters of the heald frame 31 and the reed 4 are set through a lifting controller and a moving controller;

D. the heald frame 31 and the reed 4 are driven to move, a carbon fiber 6 friction test is performed, and the resistance change of the carbon fiber 6 is observed, and under the same condition, the weavability of the carbon fiber 6 is worse as the resistance value increases faster.

The evaluation device and the method developed by the invention can simulate the opening and closing movement and the beating-up movement in the carbon fiber weaving process. In the simulated shedding motion, friction loss occurs between the carbon fibers and the heddle eyes 37, and also weaving friction loss occurs between the carbon fibers in different heald frames 31; in the simulated beating-up motion, a wear phenomenon also occurs between the carbon fibers and the reed blades. These wear phenomena are very similar to the wear behavior of carbon fibers in the actual weaving process, and are very suitable for researching the weavability of the carbon fibers. The evaluation device and the evaluation method developed by the invention are used for detecting the resistance value and the change condition of the carbon fiber through the resistance recorder 5 during the abrasion test in the carbon fiber simulation weaving process, namely reflecting the abrasion condition of the carbon fiber by using the resistance change condition of the carbon fiber. The method can realize real-time online monitoring of the abrasion condition of the carbon fiber during an abrasion experiment, so that the abrasion condition and weavability of the carbon fiber can be more efficiently and accurately researched. The evaluation device and the evaluation method developed by the invention can simultaneously monitor the resistance change conditions of single carbon fiber, partial carbon fiber or all carbon fibers in real time according to different connection positions of the resistance recorder 5, thereby more accurately and comprehensively detecting the wear condition and weavability of the carbon fibers.

Claims (10)

1. An evaluation device for the weavability of carbon fiber is characterized by comprising a support frame, wherein a traction mechanism, an opening and closing die simulation mechanism, a beating-up simulation mechanism and a resistance recorder are arranged on the support frame;

the traction mechanism comprises two fixers respectively positioned at two ends of the support frame, the carbon fiber is connected with the two fixers, and the carbon fiber is electrically communicated with the two fixers;

the opening and closing simulation mechanism comprises a heald frame which is arranged in a lifting way, and carbon fibers between the two fixers penetrate through the heald frame;

the beating-up simulation mechanism comprises a reed which reciprocates along the straight line where the carbon fiber is located, and the carbon fiber between the two fixers passes through the reed;

and the resistance recorder is connected with the two fixers corresponding to the same carbon fiber in a closed circuit manner through a lead.

2. The apparatus for evaluating weavability of carbon fiber as claimed in claim 1, wherein said holder includes a base and a fastening member on said base, said holder and said base being made of an insulating material, and said fastening member being made of a conductive material.

3. The apparatus for evaluating weavability of carbon fiber according to claim 2, wherein said base is a strip, a plurality of spaced fasteners are disposed on said base, said fasteners are rectangular, said fasteners are provided with lug bolts, said base is provided with threaded holes for receiving said lug bolts, and said base is provided with conductive blocks corresponding to said fasteners.

4. The apparatus according to claim 1, wherein the heald frames have two heald frames of the same size, the two heald frames have opposite directions of movement, the opening and closing simulation apparatus further comprises a lifting slide table, the lifting slide table is provided with a lifting stepping motor and a lifting controller for controlling the two heald frames, and the heald frames and the lifting stepping motor are connected by a transmission mechanism.

5. The apparatus of claim 1, wherein the beating-up simulating mechanism includes a moving slide horizontally disposed along the support frame, the reed is disposed on the moving slide, the reed is equipped with a moving stepping motor and a moving controller, and the moving stepping motor and the reed are connected by a transmission mechanism.

6. The apparatus of claim 1, wherein the reed and the heald frame have a width corresponding to the width of the base, a plurality of healds are provided on the heald frame, a heald eye is provided in the middle of the heald, the reed includes a plurality of spaced reed wires, and the carbon fibers are disposed in the gaps between adjacent reed wires.

7. The apparatus for evaluating weavability of carbon fibers according to claim 4 or 5, wherein the number of the carbon fibers is 1 to 30, and different carbon fibers correspond to different heddle eyes.

8. The apparatus for evaluating weavability of carbon fiber according to claim 1, wherein said metal clips of said resistance recorder are respectively a positive electrode group and a negative electrode group, said positive electrode group including a plurality of parallel positive electrode metal clips, said negative electrode group including a plurality of parallel negative electrode metal clips.

9. A method for evaluating weavability based on the apparatus for evaluating weavability of carbon fibers according to any one of claims 1 to 8, comprising the steps of:

A. the carbon fiber penetrates through the heald frame and the reed, two ends of the carbon fiber are respectively fixed on two fixing devices at two ends of the supporting frame, and the carbon fiber is straightened;

B. respectively connecting metal clips on the resistance recorder to fasteners at two ends of the same carbon fiber, forming a circuit loop through the carbon fiber, and measuring the resistance value of the carbon fiber in real time;

C. setting moving distance, speed and time interval parameters of the heald frame and the reed through a lifting controller and a moving controller;

D. and driving the heald frame and the reed to move, carrying out a carbon fiber friction test, and observing the resistance change of the carbon fiber, wherein the faster the resistance value is increased, the poorer the weavability of the carbon fiber is.

10. The apparatus for evaluating weavability of carbon fiber according to claim 9, wherein said heald frames are provided in two, and in step a, each carbon fiber is alternately inserted through eyelets of corresponding heddles of the two heald frames.

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