A device and method for detecting the interlacing degree of a fiber bundle

Abstract

The application relates to a detection device and method for the interlacing degree of a fiber bundle. The detection device comprises a support, a vibration roller set, a first clamping roller set and a scale arranged on the support. The vibration roller set can vibrate in a first direction, and the part of the fiber bundle between the feeding end and the discharging end of the vibration roller set can be flattened. The first clamping roller set is located at the discharging end of the vibration roller set, and the first clamping roller set can drive the fiber bundle to move along the first direction, so that the part of the fiber bundle flattened by the vibration roller set moves to the side of the first clamping roller set away from the vibration roller set and naturally droops to form a detection section. In the application, the disordered stacking (three-dimensional) is converted into the flattened (two-dimensional) phenomenon by the vibration roller set of the detection device to test, so that the detection result is more accurate and more intuitive. Moreover, the first clamping roller set can drive the flattened fiber bundle to move to naturally droop, automatic detection is realized, the detection consistency is guaranteed, and the detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber entanglement detection, and in particular to a fiber bundle entanglement detection device and method. BACKGROUND

[0002] Driven by the demand of various industries, the application range of carbon fiber prepreg is becoming more and more extensive. The fiber bundle spreading degree is an important factor affecting the performance of the prepreg. A large and uniform fiber bundle spreading width helps to prepare a fully impregnated, thinner and more uniform prepreg, so that the prepreg has stronger performance.

[0003] The entanglement of carbon fibers is an important parameter affecting the carbon fiber spreading performance. Therefore, it is very important to accurately test the fiber entanglement before the production of the prepreg. SUMMARY

[0004] To overcome the problems in the related art, the present application provides a fiber bundle entanglement detection device and method.

[0005] According to a first aspect of the present application, a fiber bundle entanglement detection device is provided, comprising:

[0006] a support;

[0007] a vibration roller group arranged on the support, the vibration roller group being capable of vibrating in a first direction, the first direction being parallel to the direction of the line connecting the feeding end and the discharging end of the vibration roller group, and the part of the fiber bundle between the feeding end and the discharging end of the vibration roller group being capable of being flattened;

[0008] a first clamping roller group connected to the support and located at the discharging end of the vibration roller group, the first clamping roller group being configured to drive the fiber bundle to move along the first direction, so that the flattened part of the fiber bundle moves to the side of the first clamping roller group away from the vibration roller group and naturally drops and forms a detection section;

[0009] a scale arranged below the first clamping roller group, and the scale increasing direction being parallel to the vertical direction, the scale being used to measure the sliding distance of the counterweight along the vertical direction on the detection section.

[0010] In some embodiments, the vibration roller group includes a first vibration roller, a second vibration roller and a third vibration roller, and along the first direction, the first vibration roller and the third vibration roller are arranged on the two sides of the second vibration roller;

[0011] The first vibration roller and the third vibration roller are different in height from the second vibration roller, and the first vibration roller and the third vibration roller have opposite movement directions from the second vibration roller when the vibration roller group is in a working state.

[0012] In some embodiments, the outer circumferential surface of the vibration roller of the vibration roller group is a rough surface.

[0013] In some embodiments, the detection device further comprises a second clamping roller group, which is arranged on the side of the ruler away from the first clamping roller group in the vertical direction.

[0014] In some embodiments, the first clamping roller group and the second clamping roller group are configured to be started and stopped simultaneously and have the same linear speed.

[0015] In some embodiments, the detection device further comprises:

[0016] A winding drum connected to the support and located at the feeding end of the vibration roller group.

[0017] A comb guide connected to the support and arranged between the winding drum and the feeding end of the vibration roller group.

[0018] A guide roller connected to the support and arranged between the comb guide and the feeding end of the vibration roller group.

[0019] According to a second aspect of the present application, a detection method for fiber bundle interlacing degree is provided, which uses the detection device for fiber bundle interlacing degree as described in the first aspect. The detection method comprises:

[0020] Providing a fiber bundle and passing the fiber bundle through the vibration roller group of the detection device.

[0021] Controlling the plurality of vibration rollers in the vibration roller group to vibrate at the same frequency for a preset time length to flatten a preset section of the fiber bundle.

[0022] Controlling the first clamping roller group to move the fiber bundle in a first direction, so that the preset section of the fiber bundle moves to the side of the first clamping roller group opposite to the vibration roller group and naturally drops, and the naturally dropped preset section forms a detection section.

[0023] Hanging a counterweight on the detection section and recording the sliding distance of the counterweight in the vertical direction.

[0024] Determining the interlacing degree of the fiber bundle based on an interlacing degree calculation model and the sliding distance of the counterweight.

[0025] In some embodiments, the hanging the weight on the detection section and recording the sliding distance of the weight in the vertical direction comprises:

[0026] Step one: hang the weight on the detection section at a position flush with the initial scale of the ruler, and record the sliding distance of the weight in the vertical direction;

[0027] Step two: remove the weight and hang the weight on the detection section again at a position flush with the height at which the weight stopped last time, and record the sliding distance of the weight in the vertical direction;

[0028] Repeat step two until a target number of sliding distances are obtained;

[0029] If the number of sliding distances recorded when the weight slides to the bottom end of the detection section is less than the target number, continue the sliding test by hanging the weight on the detection section at a position flush with the initial scale of the ruler until the target number of sliding distances are obtained.

[0030] In some embodiments, the entanglement calculation model comprises:

[0031]

[0032] Wherein, Q is the entanglement; L is the preset section length (unit: mm); i is the test number; Hi is the sliding distance in the i-th test; and n is the target number.

[0033] In some embodiments, the repeating step two until a target number of sliding distances are obtained comprises:

[0034] Repeat step two m times, remove part of the maximum sliding distances and part of the minimum sliding distances, and retain n sliding distances, where n < m.

[0035] The technical scheme provided by the embodiments of the present application can have the following beneficial effects: the vibration roller group of the detection device can convert the chaotic stacking (three-dimensional) into a flat (two-dimensional) phenomenon for testing, so that the detection result is more accurate and more intuitive; and the first clamping roller group can drive the flat fiber bundle to move naturally, realizing automatic detection, which is beneficial to ensure detection consistency and improve detection accuracy.

[0036] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0038] Figure 1 is a schematic view of a fiber bundle entanglement detection device according to an example embodiment.

[0039] Figure 2 is a schematic view of a fiber bundle entanglement detection device according to an example embodiment.

[0040] Figure 3 is a flowchart of a fiber bundle entanglement detection method according to an example embodiment.

[0041] REFERENCE NUMERALS:

[0042] 1. a support;

[0043] 2. a winding drum;

[0044] 3. a comb guide;

[0045] 4. a godet;

[0046] 5. a vibration roller set; 51. a first vibration roller; 52. a second vibration roller; 53. a third vibration roller;

[0047] 6. a first nip roller set;

[0048] 7. a second nip roller set;

[0049] 8. a scale;

[0050] 9. a counterweight;

[0051] 10. a take-up box;

[0052] 11. a fiber bundle. DETAILED DESCRIPTION

[0053] The example embodiments will be described in detail herein with reference to the attached drawings. The description of the example embodiments is intended to apply to all alternative embodiments, unless otherwise indicated. It is to be understood that the description of any example embodiment applies equally to like or similar components, parts and / or steps, which are identical or similar in design, function and / or configuration. The following detailed description is not intended to be understood in a selective context nor is it meant to be used to limit the scope of the example embodiments as described in the claims. The following detailed description is only intended to illustrate some aspects of the example embodiments in accordance with the present application as detailed in the appended claims.

[0054] To solve the problems in the related art, the application provides a fiber bundle interlacing degree detection device and method, the detection device comprises a support, a vibration roller group, a first clamping roller group and a scale arranged on the support, the vibration roller group can vibrate in a first direction, the first direction is parallel to the connecting direction of the feeding end and the discharging end of the vibration roller group, the part of the fiber bundle between the feeding end and the discharging end of the vibration roller group can be flattened, the first clamping roller group is located at the discharging end of the vibration roller group, the first clamping roller group can drive the fiber bundle to move along the first direction, so that the flattened part of the fiber bundle moves to the side of the first clamping roller group away from the vibration roller group and naturally droops and forms a detection section, the scale is arranged below the first clamping roller group, and the scale growth direction is parallel to the vertical direction, and the scale is used for measuring the sliding distance of the counterweight along the vertical direction on the detection section. In the application, the vibration roller group of the detection device can convert the chaotic stacking (three-dimensional) into the flattened (two-dimensional) phenomenon for testing, so that the detection result is more accurate and more intuitive; and the first clamping roller group can drive the flattened fiber bundle to move naturally, realize automatic detection, facilitate to ensure the detection consistency and improve the detection accuracy.

[0055] According to the exemplary embodiments of the application, as shown in Figure 1 and Figure 2 , the application provides a fiber bundle interlacing degree detection device, the detection device comprises a support 1, a vibration roller group 5, a first clamping roller group 6 and a scale 8 arranged on the support 1, and the vibration roller group 5 and the first clamping roller group 6 can cooperate with each other to automatically perform interlacing degree detection.

[0056] As shown in Figure 1 and Figure 2 , the support 1 is a vertically placed plate, and the vibration roller group 5, the first clamping roller group 6 and the scale 8 are arranged on one side of the plate. The support 1 provided in the embodiment has a simple structure and does not need to be processed in shape, and has a low cost.

[0057] As shown in Figure 1 , the vibration roller group 5 is arranged on the support 1, and the vibration roller group 5 can vibrate in a first direction (x direction shown in Figure 1 ), and the first direction is parallel to the connecting direction of the feeding end and the discharging end of the vibration roller group 5. During operation, the fiber bundle 11 passes through the vibration roller group 5 from the feeding end to the discharging end of the vibration roller group 5 along the first direction, and the vibration roller group 5 can vibrate and flatten the part of the fiber bundle 11 between the feeding end and the discharging end, and the plurality of fiber filaments of the flattened fiber bundle 11 are laid along the axis direction (y direction shown in Figure 1 ) of the vibration roller of the vibration roller group 5, that is, there is no fiber filament stacking.

[0058] As shown in Figure 1As shown, the first clamping roller set 6 is arranged on the support 1 and located at the discharge end of the vibration roller set 5. During the flattening of the fiber bundle 11 by the vibration roller set 5, the first clamping roller set 6 can clamp and fix the part of the fiber bundle 11 extending into the discharge end along the first direction. After the fiber bundle 11 is flattened by the vibration roller set 5, the first clamping roller set 6 can clamp and drive the fiber bundle 11 to move along the first direction, so that the flattened part (a preset section) of the fiber bundle 11 moves to the side of the first clamping roller set 6 away from the vibration roller set 5, and the preset section of the fiber bundle 11 naturally drops to form a detection section, which is the part for detecting the interlacing degree. In one example, referring to Figure 1 , the first clamping roller set 6 includes two transmission rollers arranged in parallel. The two transmission rollers are arranged in the vertical direction and have a gap therebetween. The two transmission rollers can move closer to or away from each other. When the two transmission rollers move closer to each other and the gap is less than or equal to the diameter of the single fiber, the two transmission rollers can clamp the fiber bundle 11.

[0059] As can be seen, the vibration roller set 5 can flatten the fiber bundle 11 in a disorderly stacked state, and then the first clamping roller set 6 drives the flattened fiber bundle 11 to a naturally dropped state. The flattened part of the fiber bundle 11 is used for detecting the interlacing degree, which realizes the conversion from the disorderly stacked (three-dimensional) state to the flattened (two-dimensional) state for testing, so that the detection result is more accurate and intuitive.

[0060] The detection device provided in the embodiment can use the hooking needle method to detect the interlacing degree. As shown in Figure 1 and Figure 2 , the scale 8 of the detection device is arranged below the first clamping roller set 6, and the growth direction of the scale 8 is parallel to the vertical direction (z direction shown in Figure 1 ). During the detection, the counterweight 9 with the hooking needle is hung on the detection section, so that the counterweight 9 and the hooking needle naturally slide down under the action of gravity, and the interlacing degree can be determined based on the sliding distance. In one example, the counterweight 9 can be a weight with a mass of 1g-10g. The mass of the weight can be adaptively rotated according to the specification of the fiber bundle 11, which will not be described herein.

[0061] In the embodiment, the vibration roller set 5 of the detection device can convert the disorderly stacked (three-dimensional) state to the flattened (two-dimensional) state for testing, so that the detection result is more accurate and intuitive. In addition, the first clamping roller set 6 can drive the flattened fiber bundle 11 to move to a naturally dropped state, realize automatic detection, and be beneficial to ensuring the detection consistency and improving the detection accuracy.

[0062] In one example embodiment, as shown in Figure 1 and Figure 2As shown, this embodiment provides a fiber bundle interlacing degree detection device. The detection device includes a support 1, and a vibrating roller group 5, a first clamping roller group 6, and a scale 8 disposed on the support 1. The vibrating roller group 5 can vibrate in a first direction, which is parallel to the line connecting the feeding end and the discharging end of the vibrating roller group 5. The portion of the fiber bundle 11 located between the feeding end and the discharging end of the vibrating roller group 5 can be flattened. The first clamping roller group 6 is located at the discharging end of the vibrating roller group 5. The first clamping roller group 6 can drive the fiber bundle 11 to move along the first direction, so that the portion of the fiber bundle 11 flattened by the vibrating roller group 5 moves to the side of the first clamping roller group 6 away from the vibrating roller group 5 and hangs down naturally to form a detection section. The scale 8 is disposed below the first clamping roller group 6, and the scale growth direction of the scale 8 is parallel to the vertical direction. The scale 8 is used to measure the sliding distance of the counterweight 9 on the detection section along the vertical direction.

[0063] The vibrating roller group 5 includes at least three vibrating rollers to effectively flatten the fiber bundle 11.

[0064] like Figure 1 As shown, this embodiment uses three vibrating rollers as an example for illustrative purposes. The three vibrating rollers include a first vibrating roller 51, a second vibrating roller 52, and a third vibrating roller 53, which move along the first direction ( Figure 1 (As shown in the x-direction), the first vibrating roller 51 and the third vibrating roller 53 are respectively disposed on both sides of the second vibrating roller 52. Wherein, when the vibrating roller group 5 is vibrating, at the same moment, the movement direction of the second vibrating roller 52 is opposite to the movement direction of the first vibrating roller 51 and the third vibrating roller 53.

[0065] In some embodiments, to improve the flattening efficiency of the vibrating roller group 5, the second vibrating roller 52 is at a different height than the first vibrating roller 51 and the third vibrating roller 53 located on both sides. The heights of the first vibrating roller 51 and the third vibrating roller 53 can be the same or different, without being overly limited in this regard. For example, taking the first vibrating roller 51 and the third vibrating roller 53 at the same height, and the second vibrating roller 52 at a lower height than the first vibrating roller 51 and the third vibrating roller 53, the fiber bundle 11 enters the vibrating roller group 5 from the feeding end, and passes in an M-shape successively above the first vibrating roller 51, below the second vibrating roller 52, and above the third vibrating roller 53, and then reaches the outlet end.

[0066] In other embodiments (not shown in the figures), the first, second, and third vibrating rollers are configured to have a large diameter, so that the fiber bundle can be M-shaped without setting the height of the vibrating rollers, thus ensuring high flattening efficiency.

[0067] The vibrating roller group 5 has a heating function, and the combination of vibration and heating can achieve a better flattening effect. The heating function can be implemented in ways such as: installing a heating device between adjacent vibrating rollers; installing a heating device inside the vibrating rollers of the vibrating roller group 5; or filling the vibrating rollers with heat-conducting oil. In one example, the surface temperature of the vibrating rollers in the vibrating roller group 5 is 100℃~120℃.

[0068] Among them, such as Figure 1 As shown, the outer circumferential surface of the vibratory roller is roughened to enhance flattening efficiency. In one example, the vibratory roller may be made of a metallic material, and the surface friction coefficient of the vibratory roller is 0.1 to 0.8.

[0069] Among them, such as Figure 1 As shown, the fiber bundle interlacing degree detection device also includes a second clamping roller group 7, along the vertical direction ( Figure 1 (as shown in the z direction), the second clamping roller group 7 is located on the side of the scale 8 away from the first clamping roller group 6. During the test, the second clamping roller group 7 can clamp the lower position of the detection section of the fixed fiber bundle 11. By clamping the detection section simultaneously with the first clamping roller group 6 and the second clamping roller group 7, it can be effectively ensured that the detection section is in a vertical state, reducing the inaccuracy caused by the shaking of the detection unit, and helping to improve the detection accuracy.

[0070] In some embodiments, the first clamping roller group 6 and the second clamping roller group 7 can start and stop simultaneously, and the transmission linear speed is the same, so as to ensure that the detection section is in a vertical state and in a tensile state.

[0071] Among them, such as Figure 1 As shown, the fiber bundle interlacing degree detection device also includes a winding bobbin 2, a comb-tooth yarn guide 3, and a guide roller 4. The winding bobbin 2, the comb-tooth yarn guide 3, and the guide roller 4 are arranged along the first direction and are all located at the feeding end of the vibrating roller group 5. The fiber bundle 11 to be flattened and detected is wound on the winding bobbin 2. After the fiber bundle 11 is unwound from the winding bobbin 2, it passes through the comb-tooth yarn guide 3 and the guide roller 4, and then enters the vibrating roller group 5 for flattening. The surface of the comb-tooth yarn guide 3 has multiple comb teeth arranged at intervals. The comb-tooth yarn guide 3 can perform preliminary yarn separation of the fiber bundle 11 and can prevent the fiber bundle 11 from falling off along the y-direction. The guide roller 4 can provide support for the fiber bundle 11.

[0072] In some embodiments, such as Figure 3 As shown, the fiber bundle interlacing degree detection device also includes a take-up box 10, which is used to collect the tested fiber bundles 11 to meet the continuous and automated detection requirements of the detection device.

[0073] According to an exemplary embodiment of this application, this embodiment provides a method for detecting the interlacing degree of fiber bundles. The detection method can employ the detection device provided in any of the foregoing embodiments of this application, such as...Figure 1 The detection method comprises the following steps as shown in the figure:

[0074] In step S110, a fiber bundle is provided and passed through the vibration roller set of the detection device.

[0075] In this step, the fiber bundle on the bobbin can be unwound, the free end of the fiber bundle is sequentially passed through the comb guide and the guide roller, and then passed into the vibration roller set from the feeding end of the vibration roller set and passed out from the discharging end of the vibration roller set, and the first clamping roller set is controlled to fix the free end of the fiber bundle.

[0076] In step S120, the plurality of vibration rollers in the vibration roller set are controlled to vibrate at the same frequency for a preset time length to flatten a preset section of the fiber bundle.

[0077] In this step, the vibration roller set is started, and the plurality of vibration rollers in the vibration roller set vibrate at the same frequency for a preset time length to flatten a preset section of the fiber bundle, and the preset section of the fiber bundle is between the feeding end and the discharging end of the vibration roller set.

[0078] In one example, the vibration frequency of the vibration roller set is 25Hz-35Hz, and the vibration time length is 25min-35min.

[0079] In step S130, the first clamping roller set is controlled to drive the fiber bundle to move in the first direction, so that the preset section of the fiber bundle moves to the side of the first clamping roller set facing away from the vibration roller set and naturally droops, and the naturally drooped preset section forms a detection section.

[0080] In this step, the first clamping roller set can clamp and fix the fiber bundle and drive the fiber bundle to move in the first direction, so that the preset section of the fiber bundle moves to the side of the first clamping roller set facing away from the vibration roller set and naturally droops, and the naturally drooped preset section forms a detection section, and the detection section is used for detecting the interlacing degree by the hooking method.

[0081] In this step, in some embodiments, the vibration roller set can be closed after vibrating for a preset time length, and then the first clamping roller set is controlled to start and drive the fiber bundle to move in the first direction. In other embodiments, the first clamping roller set can drive the fiber bundle to move in the first direction during the vibration of the vibration roller set, and the speed at which the first clamping roller set drives the fiber bundle to move is 0.9m-1.1m.

[0082] In step S140, a counterweight is hung on the detection section, and the sliding distance of the counterweight in the vertical direction is recorded.

[0083] In this step, the counterweight with a hook can be hooked on the detection section, and the operator releases the counterweight to make the counterweight slide in the vertical direction based on its own gravity, and the sliding distance of the counterweight is determined by the readings of the hanging position and the stopping position of the counterweight on the scale.

[0084] It should be noted that in order to improve the accuracy of the entanglement detection, multiple detection tests are usually required. For the same fiber bundle, the counterweight can be hung at different positions of the preset section for free falling test to record multiple sets of falling distances.

[0085] Step S150, determining the entanglement of the fiber bundle based on the entanglement calculation model and the falling distance of the counterweight.

[0086] In this step, multiple sets of falling distances can be recorded, and the numerical value of the falling distance can be input into the entanglement calculation model to calculate the entanglement of the fiber bundle. The entanglement calculation model can be a preset mathematical formula, which will be described in detail below.

[0087] In this embodiment, the test is performed by converting the chaotic stacking (three-dimensional) into a flattened (two-dimensional) phenomenon, so that the detection result is more accurate and more intuitive. Moreover, the first clamping roller set can drive the flattened fiber bundle to move naturally, realize automatic detection, and be beneficial to guarantee the detection consistency and improve the detection accuracy.

[0088] In some embodiments, the present embodiment is a further description of step S140 in the above-mentioned embodiments. The counterweight is hung on the detection section, and the falling distance of the counterweight along the vertical direction is recorded, including the following steps:

[0089] Step S141, hanging the counterweight on the detection section at a position flush with the initial scale of the ruler, and recording the falling distance of the counterweight along the vertical direction.

[0090] In this step, the first recorded falling distance can be recorded as H1.

[0091] Step S142, removing the counterweight and re-hanging the counterweight on the detection section at a position flush with the height when the counterweight stopped falling last time, and recording the falling distance of the counterweight along the vertical direction.

[0092] In this step, the second recorded falling distance can be recorded as H2.

[0093] Step S143, repeating the above step S142 until a target number of multiple falling distances are obtained.

[0094] In this step, through repeated operation, the falling distances H3, H4, H5… can be obtained in turn.

[0095] If the number of falling distances recorded when the counterweight falls to the bottom end of the detection section is less than the target number, the counterweight is hung on the detection section at a position flush with the initial scale of the ruler for further falling test until a target number of multiple falling distances are obtained.

[0096] In this embodiment, by taking the last sliding end point as the next sliding starting point, the entire detection section can be continuously entangled degree detection, so that the detection result can better reflect the overall entangled degree of the detection section, and the detection result is accurate. In addition, when the sliding reaches the bottom end of the detection section, the counterweight can be hung at the position of the detection section which is flush with the initial scale of the ruler for detection. Such operation facilitates the control of variables in multiple tests, and compared with random hanging or stopping detection, it can control variables, and is beneficial to improve the reliability and accuracy of the detection result.

[0097] In some embodiments, the entangled degree calculation model formula is as follows:

[0098]

[0099] Wherein, Q-entangled degree; L-preset section length (unit: mm); i-test number; Hi-sliding distance in the ith test; n-target number.

[0100] In some embodiments, step S143, repeat the above operation until the target number of sliding distances is obtained, including: repeating the above step S142 m times, removing part of the maximum sliding distance and part of the minimum sliding distance, and retaining n sliding distances, n is less than m.

[0101] In one example, the length of the detection section is 1000mm, the test is 50 times, and 10 maximum and minimum sliding distance data are removed to obtain the target number of sliding distances equal to 30. In this embodiment, by screening the data, the situation that the detection result is inaccurate due to accidental error can be reduced, which is beneficial to improve the detection accuracy.

[0102] For example, the distances of the first 50 times of sliding of the counterweight are 58mm, 59mm, 76mm, 39mm, 55mm, 64mm, 49mm, 89mm, 49mm, 55mm, 94mm, 38mm, 34mm, 46mm, 29mm, 65mm, 42mm, 38mm, 49mm, 42mm, 28mm, 59mm, 56mm, 38mm, 64mm, 77mm, 49mm, 38mm, 41mm, 58mm, 34mm, 36mm, 35mm, 59mm, 76mm, 48mm, 42mm, 94mm, 86mm, 54mm, 32mm, 59mm, 64mm, 48mm, 67mm, 45mm, 29mm, 57mm, 34mm, 97mm.

[0103] Based on the entangled degree calculation model and the retained 30 test distances, Q=19.81 can be calculated.

[0104] In order to further improve the detection accuracy, the detection section can be tested in multiple rounds, and then the interlacing degrees obtained in the multiple rounds are averaged to obtain the final interlacing degree of the detection section. In an optional embodiment, the multiple rounds of testing can be performed at different width positions of the detection section as the hanging positions of the weight member.

[0105] For example, the fiber bundle width (the y direction shown in FIG. 1) is W, the first round of testing can hang the weight member at 1 / 4 (see FIG. 2) and calculate the interlacing degree Q1, the second round of testing can hang at 1 / 2 (not shown in the figure) and calculate the interlacing degree Q2, the third round can hang at 3 / 4 (not shown in the figure) and calculate the interlacing degree Q3, and the interlacing degree of the detection section is the average of Q1, Q2 and Q3. Figure 2 ​ For example, the fiber bundle width (the y direction shown in FIG. 1) is W, the first round of testing can hang the weight member at 1 / 4 (see FIG. 2) and calculate the interlacing degree Q1, the second round of testing can hang at 1 / 2 (not shown in the figure) and calculate the interlacing degree Q2, the third round can hang at 3 / 4 (not shown in the figure) and calculate the interlacing degree Q3, and the interlacing degree of the detection section is the average of Q1, Q2 and Q3.

[0106] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0107] It is to be understood that the application is not limited to the precise construction described in the specification and shown in the drawings, and various modifications and changes can be effected therein by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims appended hereto.​​

Claims

1. A device for detecting the degree of fiber bundle interweaving, characterized in that, include: support; A vibrating roller assembly is disposed on the support. The vibrating roller assembly is capable of vibrating in a first direction, which is parallel to the line connecting the feeding end and the discharging end of the vibrating roller assembly, so that the portion of the fiber bundle located between the feeding end and the discharging end of the vibrating roller assembly can be flattened. The vibrating roller assembly includes a first vibrating roller, a second vibrating roller, and a third vibrating roller. Along the first direction, the first vibrating roller and the third vibrating roller are respectively disposed on both sides of the second vibrating roller. When the vibrating roller assembly is in working condition, the first vibrating roller and the third vibrating roller have opposite directions of movement to the second vibrating roller. The first clamping roller group is connected to the bracket and located at the discharge end of the vibrating roller group. The first clamping roller group is configured to drive the fiber bundle to move along the first direction, so that the portion of the fiber bundle that is flattened by the vibrating roller group moves to the side of the first clamping roller group away from the vibrating roller group and hangs down naturally to form a detection section. The first clamping roller group includes two parallel drive rollers. The two drive rollers are arranged in a vertical direction and there is a gap between the two drive rollers. The two drive rollers can move closer to each other or further away. When the two drive rollers move closer to each other and the gap is less than or equal to the diameter of a single fiber, the two drive rollers clamp the fiber bundle. A scale is positioned below the first clamping roller group, and the scale increments are parallel to the vertical direction. The scale is used to measure the sliding distance of the counterweight on the detection section along the vertical direction. The second clamping roller group is located along the vertical direction on the side of the scale away from the first clamping roller group.

2. The fiber bundle interlacing degree detection device according to claim 1, characterized in that, The first and third vibrating rollers are at different heights than the second vibrating roller.

3. The fiber bundle interlacing degree detection device according to claim 1 or 2, characterized in that, The outer circumferential surface of the vibrating rollers in the vibrating roller assembly is a rough surface.

4. The fiber bundle interlacing degree detection device according to claim 1, characterized in that, The first clamping roller group and the second clamping roller group are configured to start and stop simultaneously and have the same linear rotation speed.

5. The fiber bundle interlacing degree detection device according to claim 1, characterized in that, The detection device further includes: A wire winding spool is connected to the bracket and located at the feeding end of the vibrating roller assembly; A comb-tooth yarn guide is connected to the bracket and is located between the winding bobbin and the feeding end of the vibrating roller assembly; The guide roller is connected to the bracket and is located between the comb-tooth yarn guide and the feeding end of the vibrating roller group.

6. A method for detecting the interlacing degree of fiber bundles, characterized in that, The detection method using the fiber bundle interlacing degree detection device as described in any one of claims 1-5 includes: Provide a fiber bundle and pass the fiber bundle through the vibrating roller assembly of the detection device; Multiple vibrating rollers in the vibrating roller group are controlled to vibrate at the same frequency for a preset duration in order to flatten a preset segment of the fiber bundle; The first clamping roller group is controlled to drive the fiber bundle to move along the first direction, so that the preset segment of the fiber bundle moves to the side of the first clamping roller group opposite to the vibrating roller group and hangs down naturally. The preset segment that hangs down naturally forms a detection segment. The counterweight is hung on the detection section, and the vertical sliding distance of the counterweight is recorded. The degree of interweaving of the fiber bundle is determined based on the interweaving degree calculation model and the slip distance of the counterweight.

7. The method for detecting fiber bundle interlacing degree according to claim 6, characterized in that, The step of hanging the counterweight on the detection section and recording the vertical sliding distance of the counterweight includes: Step 1: Hang the counterweight on the detection section at a position flush with the initial scale mark, and record the vertical sliding distance of the counterweight. Step 2: Remove the counterweight and reattach it to the detection section. The reattachment position should be level with the height of the counterweight when it last stopped sliding down. Record the distance the counterweight slides down vertically. Repeat step two above until the target number of sliding distances are obtained; If the number of times the counterweight falls to the bottom of the detection section is less than the target number, the counterweight is hung on the detection section at a position flush with the initial scale of the ruler to continue the fall test until the target number of multiple fall distances are obtained.

8. The method for detecting fiber bundle interlacing degree according to claim 7, characterized in that, The intersection degree calculation model includes: Where Q is the degree of intersection; L is the preset segment length in mm; i is the test number; Hi is the slip distance in the i-th test in mm; and n is the number of targets.

9. The method for detecting fiber bundle interlacing degree according to claim 7 or 8, characterized in that, The process of repeating step two above until the target number of sliding distances is obtained includes: Repeat step two above m times, removing some of the maximum and minimum sliding distances, and retaining n sliding distances, where n < m.

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