Device and method for detecting interlacing degree of fiber bundles

Abstract

The invention relates to a fiber bundle interlacing degree detection device and method.The detection device comprises a support, a vibration roller set, a first clamping roller set and a scale, the vibration roller set, the first clamping roller set and the scale are arranged on the support, the vibration roller set can vibrate in the first direction, and the part, located between the feeding end and the discharging end of the vibration roller set, of a fiber bundle can be flattened; the first clamping roller set is located at the discharging end of the vibration roller set and can drive the fiber bundle to move in the first direction, so that the part, flattened by the vibration roller set, of the fiber bundle moves to the side, away from the vibration roller set, of the first clamping roller set and naturally droops, and a detection section is formed. According to the invention, the vibration roller group of the detection device can convert a disordered stacking (three-dimensional) phenomenon into a flattening (two-dimensional) phenomenon for testing, so that the detection result is more accurate and more visual; and moreover, the first clamping roller group can drive the flattened fiber bundle to move until the flattened fiber bundle naturally droops, so that automatic detection is realized, the detection consistency is favorably ensured, and the detection accuracy is improved.

Description

Technical Field

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

[0002] Driven by the demands of various industries, the application scope of carbon fiber prepreg is becoming more and more extensive. The degree of fiber bundle expansion is an important factor affecting the performance of prepreg. A large fiber bundle expansion width and uniform dispersion are helpful to prepare fully impregnated, thinner and more uniform prepreg, so that the prepreg has stronger performance.

[0003] The degree of entanglement of carbon fiber is an important parameter that affects the yarn spreading performance of carbon fiber. It is very important to accurately test the degree of entanglement of fibers before prepreg production. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present application provides a device and method for detecting the degree of entanglement of fiber bundles.

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

[0006] Bracket;

[0007] A vibration roller group is arranged on the bracket, 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, and the portion of the fiber bundle located between the feeding end and the discharging end of the vibration roller group can be flattened;

[0008] A first clamping roller group, connected to the bracket and located at the discharge end of the vibrating roller group, the first clamping roller group being configured to drive the fiber bundle to move along the first direction, so that the portion of the fiber bundle flattened by the vibrating roller group moves to a side of the first clamping roller group away from the vibrating roller group and droops naturally to form a detection section;

[0009] A ruler is arranged below the first clamping roller group, and the scale growth direction of the ruler is parallel to the vertical direction. The ruler is used to measure the sliding distance of the counterweight block on the detection section along the vertical direction.

[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 respectively arranged on both sides of the second vibration roller;

[0011] The first vibration roller and the third vibration roller are at different heights from the second vibration roller. When the vibration roller group is in working state, the first vibration roller and the third vibration roller have opposite movement directions to the second vibration roller.

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

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

[0014] In some embodiments, the first clamping roller set and the second clamping roller set are configured to start and stop at the same time and have the same rotational linear speed.

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

[0016] A wire winding drum connected to the bracket and located at a feeding end of the vibration roller group;

[0017] A comb-tooth yarn guide, connected to the bracket and arranged between the winding drum and the feeding end of the vibration roller group;

[0018] The yarn guide roller is connected to the bracket and is arranged between the comb-tooth yarn guide and the feeding end of the vibration roller group.

[0019] According to a second aspect of the present application, a method for detecting the degree of entanglement of a fiber bundle is provided, which is applied to the device for detecting the degree of entanglement of a fiber bundle as described in the first aspect, and the detection method comprises:

[0020] Providing a fiber bundle and passing the fiber bundle through a vibrating roller set of a detection device;

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

[0022] Controlling the first clamping roller group to drive the fiber bundle to move along the first direction, so that the preset section of the fiber bundle moves to the side of the first clamping roller group facing away from the vibration roller group and droops naturally, and the naturally drooping preset section forms a detection section;

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

[0024] The degree of entanglement of the fiber bundles is determined based on an entanglement degree calculation model and a sliding distance of the counterweight.

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

[0026] Hanging the counterweight at a position of the detection section flush with the initial scale of the ruler, and recording the sliding distance of the counterweight in the vertical direction;

[0027] Remove the counterweight and re-hang it on the detection section, the hanging position is flush with the height when the counterweight stopped sliding last time, and record the distance the counterweight slides in the vertical direction;

[0028] Repeat the previous operation until you obtain the target number of sliding distances;

[0029] Among them, if the sliding distance recorded when the counterweight slides to the bottom of the detection section is less than the target number, the counterweight is hung at a position of the detection section flush with the initial scale of the ruler to continue the sliding test until multiple sliding distances of the target number are obtained.

[0030] In some embodiments, the interconnectedness calculation model includes:

[0031]

[0032] Wherein, Q is the degree of intersection; L is the preset segment length (unit: mm); i is the test number; Hi is the sliding distance in the i-th test; and n is the number of targets.

[0033] In some embodiments, repeating the previous operation until a target amount of sliding distance is obtained includes:

[0034] Repeat the above operation m times, remove some of the maximum sliding distances and some of the minimum sliding distances, and retain n sliding distances, n<m.

[0035] The technical solution provided by the embodiments of the present application may include the following beneficial effects: by using a vibration roller group in the detection device, the disordered stacking (three-dimensional) can be converted into a 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 to natural droop, thereby realizing automated detection, which is beneficial to ensuring detection consistency and improving detection accuracy.

[0036] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0038] Figure 1 It is a schematic diagram of a device for detecting the degree of entanglement of fiber bundles according to an exemplary embodiment.

[0039] Figure 2 It is a schematic diagram of a device for detecting the degree of entanglement of fiber bundles according to an exemplary embodiment.

[0040] Figure 3 The figure is a flow chart of a method for detecting the degree of intertwining of fiber bundles according to an exemplary embodiment.

[0041] Reference numerals:

[0042] 1. Bracket;

[0043] 2. Wire winding drum;

[0044] 3. Comb tooth yarn guide;

[0045] 4. Godet roller;

[0046] 5. Vibrating roller group; 51. First vibrating roller; 52. Second vibrating roller; 53. Third vibrating roller;

[0047] 6. The first clamping roller group;

[0048] 7. Second clamping roller set;

[0049] 8. Ruler;

[0050] 9. Counterweight;

[0051] 10. Wire collection box;

[0052] 11. Fiber bundles. DETAILED DESCRIPTION

[0053] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0054] In order to solve the problems existing in the related art, the present application provides a device and method for detecting the degree of entanglement of a fiber bundle, the detection device includes a bracket, and a vibrating roller group, a first clamping roller group and a ruler arranged on the bracket, the vibrating roller group can vibrate in a first direction, the first direction is parallel to the connection direction of the feeding end and the discharging end of the vibrating roller group, the part of the fiber bundle located between the feeding end and the discharging end of the vibrating roller group can be flattened, the first clamping roller group is located at the discharging end of the vibrating roller group, the first clamping roller group can drive the fiber bundle to move along the first direction, so that the part of the fiber bundle flattened by the vibrating roller group moves to the side of the first clamping roller group away from the vibrating roller group and naturally droops to form a detection section, the ruler is arranged below the first clamping roller group, and the scale growth direction of the ruler is parallel to the vertical direction, the ruler is used to measure the sliding distance of the counterweight block on the detection section along the vertical direction. In the present application, the vibration roller group in the detection device can convert the disordered stacking (three-dimensional) into a flattened (two-dimensional) phenomenon for testing, so that the detection result is more accurate and intuitive; and the first clamping roller group can drive the flattened fiber bundle to move to natural droop, realizing automated detection, which is conducive to ensuring detection consistency and improving detection accuracy.

[0055] According to an exemplary embodiment of the present application, Figure 1 and Figure 2 As shown, an embodiment of the present application provides a device for detecting the degree of entanglement of fiber bundles. The detection device includes a bracket 1, and a vibration roller group 5, a first clamping roller group 6 and a scale 8 arranged on the bracket 1. The vibration roller group 5 and the first clamping roller group 6 can cooperate with each other to automatically perform entanglement detection.

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

[0057] like Figure 1 As shown, the vibration roller set 5 is arranged on the bracket 1, and the vibration roller set 5 can be in a first direction ( Figure 1 The first direction is parallel to the connecting line direction of the feeding end and the discharging end of the vibration roller group 5. During the operation, the fiber bundle 11 passes through the vibration roller group 5 from the feeding end of the vibration roller group 5 along the first direction, and passes out from the discharging end of the vibration roller group 5. The vibration roller group 5 can vibrate and flatten the portion of the fiber bundle 11 between the feeding end and the discharging end. The multiple fiber filaments in the flattened fiber bundle 11 are moved along the axis direction ( Figure 1 The y direction (as shown in FIG) is flat, that is, there is no overlapping of fiber filaments.

[0058] like Figure 1As shown, the first clamping roller group 6 is arranged on the bracket 1 and is located at the discharge end of the vibration roller group 5. In the process of the vibration roller group 5 flattening the fiber bundle 11, the first clamping roller group 6 can clamp and fix the portion of the fiber bundle 11 extending into the discharge end along the first direction. After the vibration roller group 5 flattens the fiber bundle 11, the first clamping roller group 6 can clamp and drive the fiber bundle 11 to move along the first direction, so that the portion of the fiber bundle 11 flattened by the vibration roller group 5 (the preset section) moves to the side of the first clamping roller group 6 away from the vibration roller group 5, and the preset section of the fiber bundle 11 naturally droops to form a detection section, which is also the portion used for entanglement detection. In one example, refer to Figure 1 The first clamping roller group 6 includes two transmission rollers arranged in parallel. The two transmission rollers are arranged in a vertical direction and there is a certain gap between the two transmission rollers. The two transmission rollers can approach or move away from each other. When the two transmission rollers approach each other so that the gap is less than or equal to the diameter of a single fiber filament, the two transmission rollers can clamp the fiber bundle 11.

[0059] As can be seen from the above, the vibration roller group 5 can flatten the randomly stacked fiber bundles 11, and then the first clamping roller group 6 drives the flattened fiber bundles 11 to a natural drooping state, and the flattened part of the fiber bundle 11 is used to detect the degree of entanglement, thereby realizing the conversion of the randomly stacked (three-dimensional) into the flattened (two-dimensional) phenomenon for testing, making the test results more accurate and intuitive.

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

[0061] In this embodiment, the vibration roller group 5 in the detection device can convert the disordered stacking (three-dimensional) into a flattened (two-dimensional) phenomenon for testing, so that the detection result is more accurate and intuitive; and the first clamping roller group 6 can drive the flattened fiber bundle 11 to move to natural droop, thereby realizing automated detection, which is beneficial to ensure detection consistency and improve detection accuracy.

[0062] In an exemplary embodiment, Figure 1 and Figure 2As shown, this embodiment provides a device for detecting the degree of entanglement of a fiber bundle, the detection device includes a bracket 1, and a vibration roller group 5, a first clamping roller group 6 and a scale 8 arranged on the bracket 1, the vibration roller group 5 can vibrate in a first direction, the first direction is parallel to the connection direction of the feeding end and the discharging end of the vibration roller group 5, the portion of the fiber bundle 11 located between the feeding end and the discharging end of the vibration roller group 5 can be flattened, the first clamping roller group 6 is located at the discharging end of the vibration 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 vibration roller group 5 moves to the side of the first clamping roller group 6 away from the vibration roller group 5 and naturally droops to form a detection section, the scale 8 is arranged 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 block 9 on the detection section along the vertical direction.

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

[0064] like Figure 1 As shown, in this embodiment, three vibration rollers are set as an example for exemplary description. The three vibration rollers include a first vibration roller 51, a second vibration roller 52 and a third vibration roller 53. Figure 1 The first vibration roller 51 and the third vibration roller 53 are respectively arranged on both sides of the second vibration roller 52. When the vibration roller group 5 is in the vibration process, at the same time, the movement direction of the second vibration roller 52 is opposite to the movement direction of the first vibration roller 51 and the third vibration roller 53.

[0065] In some embodiments, in order to improve the flattening efficiency of the vibration roller group 5, the second vibration roller 52 is different from the first vibration roller 51 and the third vibration roller 53 located on both sides, and the height of the first vibration roller 51 and the third vibration roller 53 can be the same or different, without too much limitation. For example, taking the first vibration roller 51 and the third vibration roller 53 as an example of being flush with each other and the second vibration roller 52 as a lower height than the first vibration roller 51 and the third vibration roller 53, the fiber bundle 11 enters the vibration roller group 5 from the feeding end, and passes through the top of the first vibration roller 51, the bottom of the second vibration roller 52 and the top of the third vibration roller 53 in an M shape, and then reaches the outlet end.

[0066] In other embodiments (not shown in the drawings), the first vibration roller, the second vibration roller and the third vibration roller are set to have larger diameters, and the fiber bundle can be M-shaped without setting the height of the vibration roller to ensure higher flattening efficiency.

[0067] The vibration 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 achieved by, for example, setting a heating device between adjacent vibration rollers; setting a heating device inside the vibration roller of the vibration roller group 5; filling the vibration roller with heat transfer oil, etc. In one example, the surface temperature of the vibration roller of the vibration roller group 5 is 100°C to 120°C.

[0068] Among them, Figure 1 As shown, the outer peripheral surface of the vibration roller is a rough surface to enhance the flattening efficiency. In one example, the vibration roller can be made of a metal material, and the surface friction coefficient of the vibration roller is 0.1-0.8.

[0069] Among them, Figure 1 As shown, the fiber bundle entanglement degree detection device also includes a second clamping roller group 7, which is arranged in the vertical direction ( Figure 1 The second clamping roller group 7 is arranged 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 at the same time by the first clamping roller group 6 and the second clamping roller group 7, it can effectively ensure that the detection section is in a vertical state, reduce the shaking of the detection unit and cause inaccurate results, and help improve the detection accuracy.

[0070] In some embodiments, the first clamping roller set 6 and the second clamping roller set 7 can be started and stopped at the same time, and the transmission line speed is the same to ensure that the detection section is in a vertical state and in a stretched state.

[0071] Among them, Figure 1 As shown, the device for detecting the degree of intertwining of fiber bundles further includes a winding drum 2, a comb-tooth yarn guide 3 and a wire guide roller 4, which are arranged along the first direction and are all located at the feeding end of the vibration roller group 5. The winding drum 2 is provided with a fiber bundle 11 to be flattened and tested. After the fiber bundle 11 is withdrawn from the winding drum 2, it passes through the comb-tooth yarn guide 3 and the wire guide roller 4, and then enters the vibration roller group 5 for flattening. The surface of the comb-tooth yarn guide 3 has a plurality of comb teeth arranged at intervals, and the comb-tooth yarn guide 3 can perform preliminary yarn separation on the fiber bundle 11 and can prevent the fiber bundle 11 from falling off along the y direction, and the wire guide roller 4 can provide support for the fiber bundle 11.

[0072] In some embodiments, Figure 1 As shown, the device for detecting the degree of entanglement of fiber bundles further includes a wire collecting box 10, and the wire collecting box 10 is used to collect the tested fiber bundles 11 to meet the continuous and automatic detection requirements of the detection device.

[0073] According to an exemplary embodiment of the present application, this embodiment provides a method for detecting the degree of fiber bundle entanglement, and the detection method can be applied to the detection device provided in any of the aforementioned embodiments of the present application, such as Figure 3 As shown, the detection method comprises the following steps:

[0074] Step S110, providing a fiber bundle, and passing the fiber bundle through a vibrating roller group of a detection device.

[0075] In this step, the fiber bundle on the winding drum can be unwound, and the free end of the fiber bundle can be passed through the comb-tooth yarn guide and the wire guide roller in sequence, and then passed into the vibration roller group from the feeding end of the vibration roller group and out from the discharge end of the vibration roller group, and the first clamping roller group is controlled to fix the free end of the fiber bundle.

[0076] Step S120, controlling the multiple vibration rollers in the vibration roller group to vibrate at the same frequency for a preset time period to flatten the preset section of the fiber bundle.

[0077] In this step, the vibration roller group is controlled to start, and multiple vibration rollers in the vibration roller group vibrate at the same frequency for a preset time to flatten a preset section of the fiber bundle, which is the portion between the feeding end and the discharging end of the vibration roller group.

[0078] In one example, the vibration frequency of the vibration roller group is 25 Hz to 35 Hz, and the vibration duration is 25 min to 35 min.

[0079] Step S130, controlling the first clamping roller group to drive the fiber bundle to move along the first direction, so that a preset section of the fiber bundle moves to the side of the first clamping roller group facing away from the vibration roller group and droops naturally, and the naturally drooping preset section forms a detection section.

[0080] In this step, the first clamping roller group can clamp and fix the fiber bundle and drive the fiber bundle to move along the first direction, so that the preset section of the fiber bundle moves to the side of the first clamping roller group facing away from the vibration roller group and droops naturally. The naturally drooping preset section forms a detection section, which is the part used to detect the degree of entanglement by the crochet method.

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

[0082] Step S140: hang the counterweight on the detection section and record the sliding distance of the counterweight in the vertical direction.

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

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

[0085] Step S150: determining the degree of entanglement of the fiber bundles based on the entanglement degree calculation model and the sliding distance of the counterweight.

[0086] In this step, multiple groups of sliding distances can be recorded, and the values ​​of the sliding distances can be input into the intertwining degree calculation model to calculate the intertwining degree of the fiber bundles. The intertwining degree calculation model can be a preset mathematical formula, which will be described in detail later.

[0087] In this embodiment, by converting the disordered stacking (three-dimensional) into a flattened (two-dimensional) phenomenon for testing, the detection result is made more accurate and intuitive; and the first clamping roller group can drive the flattened fiber bundle to move to natural droop, thereby realizing automated detection, which is beneficial to ensure detection consistency and improve detection accuracy.

[0088] In some embodiments, this embodiment is a further explanation of step S140 in the above embodiment, wherein the counterweight is hung on the detection section, and the sliding distance of the counterweight along the vertical direction is recorded, including the following steps:

[0089] Step S141, hang the counterweight at a position of the detection section that is flush with the initial scale of the ruler, and record the sliding distance of the counterweight in the vertical direction.

[0090] In this step, the sliding distance recorded for the first time may be recorded as H1.

[0091] Step S142, remove the counterweight and re-hang it on the detection section, the hanging position is flush with the height when the counterweight stopped sliding last time, and the distance the counterweight slides in the vertical direction is recorded.

[0092] In this step, the sliding distance recorded for the second time may be recorded as H2.

[0093] Step S143, repeat the previous operation until a target number of sliding distances are obtained.

[0094] In this step, by repeating the operation, the sliding distances H3, H4, H5, ... can be obtained in sequence.

[0095] Among them, if the sliding distance recorded when the counterweight slides to the bottom of the detection section is less than the target number, the counterweight is hung at a position of the detection section flush with the initial scale of the ruler to continue the sliding test until multiple sliding distances of the target number are obtained.

[0096] In this embodiment, by using the end point of the last slide as the starting point of the next slide, the entire detection section can be tested for intersection without interruption, so that the test result can better reflect the overall intersection of the detection section, and the test result has high accuracy. In addition, when the slide reaches the bottom of the detection section, the counterweight can be re-hung at a position flush with the initial scale of the ruler for testing. Such operation is convenient for controlling variables in multiple groups of tests. Compared with arbitrary hanging or stopping the test, the variables can be controlled, which is conducive to improving the credibility and accuracy of the test results.

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

[0098]

[0099] Wherein, Q is the degree of intersection; L is the preset segment length (unit: mm); i is the test number; Hi is the sliding distance in the i-th test; and n is the number of targets.

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

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

[0102] For example, the distances of the counterweight sliding down for the first 50 times 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, and 97mm.

[0103] Based on the intersection degree calculation model and the 30 retained speed measurement distances, it can be calculated that Q=19.81.

[0104] To further improve the detection accuracy, the detection section can be tested multiple times, and then the intersections obtained from the multiple tests can be averaged to obtain the final intersection of the detection section. In an optional embodiment, multiple tests can be performed at different width positions of the detection section as the hanging positions of the counterweight.

[0105] For example, the fiber bundle width ( Figure 1 In the first round of testing, the counterweight can be hung at 1 / 4 (see Figure 2 ) and calculate the degree of intersection Q1, the second round of testing can be hung at 1 / 2 (not shown in the figure) and calculate the degree of intersection Q2, the third round can be hung at 3 / 4 (not shown in the figure) and calculate the degree of intersection Q3, the intersection degree of the detection segment

[0106] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The description and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0107] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A device for detecting the degree of entanglement of fiber bundles, characterized in that: include: Bracket; A vibration roller group is arranged on the bracket, 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, and the portion of the fiber bundle located between the feeding end and the discharging end of the vibration roller group can be flattened; A first clamping roller group, connected to the bracket and located at the discharge end of the vibrating roller group, the first clamping roller group being configured to drive the fiber bundle to move along the first direction, so that the portion of the fiber bundle flattened by the vibrating roller group moves to a side of the first clamping roller group away from the vibrating roller group and droops naturally to form a detection section; A ruler is arranged below the first clamping roller group, and the scale growth direction of the ruler is parallel to the vertical direction. The ruler is used to measure the sliding distance of the counterweight block on the detection section along the vertical direction.

2. The device for detecting the degree of entanglement of fiber bundles according to claim 1, characterized in that: 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 respectively arranged on both sides of the second vibration roller; The first vibration roller and the third vibration roller are at different heights from the second vibration roller. When the vibration roller group is in working state, the first vibration roller and the third vibration roller have opposite movement directions to the second vibration roller.

3. The device for detecting the degree of entanglement of fiber bundles according to claim 1 or 2, characterized in that: The outer peripheral surface of the vibration roller of the vibration roller group is a rough surface.

4. The device for detecting the degree of entanglement of fiber bundles according to claim 1, characterized in that: The detection device further comprises a second clamping roller group, and along the vertical direction, the second clamping roller group is arranged on a side of the scale away from the first clamping roller group.

5. The device for detecting the degree of entanglement of fiber bundles according to claim 4, characterized in that: The first clamping roller group and the second clamping roller group are configured to start and stop at the same time and have the same rotational linear speed.

6. The device for detecting the degree of entanglement of fiber bundles according to claim 1, characterized in that: The detection device also includes: A wire winding drum connected to the bracket and located at a feeding end of the vibration roller group; A comb-tooth yarn guide, connected to the bracket and arranged between the winding drum and the feeding end of the vibration roller group; The yarn guide roller is connected to the bracket and is arranged between the comb-tooth yarn guide and the feeding end of the vibration roller group.

7. A method for detecting the degree of entanglement of fiber bundles, characterized in that: The device for detecting the degree of intertwining of fiber bundles as claimed in any one of claims 1 to 6, wherein the detection method comprises: Providing a fiber bundle and passing the fiber bundle through a vibrating roller set of a detection device; Controlling a plurality of vibration rollers in the vibration roller group to vibrate at the same frequency for a preset time period to flatten a preset section of the fiber bundle; Controlling the first clamping roller group to drive the fiber bundle to move along the first direction, so that the preset section of the fiber bundle moves to the side of the first clamping roller group facing away from the vibration roller group and droops naturally, and the naturally drooping preset section forms a detection section; Hanging a counterweight on the detection section, and recording a sliding distance of the counterweight in a vertical direction; The degree of entanglement of the fiber bundles is determined based on an entanglement degree calculation model and a sliding distance of the counterweight.

8. The method for detecting the degree of entanglement of fiber bundles according to claim 7, characterized in that: The step of hanging the counterweight on the detection section and recording the sliding distance of the counterweight in the vertical direction comprises: Hanging the counterweight at a position of the detection section flush with the initial scale of the ruler, and recording the sliding distance of the counterweight in the vertical direction; Remove the counterweight and re-hang it on the detection section, the hanging position is flush with the height when the counterweight stopped sliding last time, and record the distance the counterweight slides in the vertical direction; Repeat the previous operation until you obtain the target number of sliding distances; Among them, if the sliding distance recorded when the counterweight slides to the bottom of the detection section is less than the target number, the counterweight is hung at a position of the detection section flush with the initial scale of the ruler to continue the sliding test until multiple sliding distances of the target number are obtained.

9. The method for detecting the degree of entanglement of fiber bundles according to claim 8, characterized in that: The interconnectedness calculation model includes: Wherein, Q is the degree of intersection; L is the preset segment length (unit: mm); i is the test number; Hi is the sliding distance in the i-th test; and n is the number of targets.

10. The method for detecting the degree of entanglement of fiber bundles according to claim 8 or 9, characterized in that: Repeating the above operation until the target sliding distance is obtained includes: Repeat the above operation m times, remove some of the maximum sliding distances and some of the minimum sliding distances, and retain n sliding distances, n<m.

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