Fiber winding impregnation debugging device and process

Abstract

The application provides a fiber winding and impregnation debugging device and process. The fiber winding and impregnation debugging device comprises an impregnation tank, an impregnation assembly, a feeding roller and a glue scraping assembly. The impregnation tank is filled with resin, and a weighing sensor for weighing the weight of the resin is arranged at the bottom. The impregnation assembly is arranged on one side of the impregnation tank. The impregnation assembly comprises an impregnation roller group extending into the impregnation tank, and the impregnation roller group can move in the up-down direction. An encoder is arranged on the feeding roller. The glue scraping assembly is arranged in the impregnation tank and located on the discharge side of the impregnation assembly. The glue scraping assembly comprises a rotating shaft and a glue scraping plate located above the rotating shaft, and a weight adjusting block is arranged at the top. The fiber winding and impregnation debugging device provided by the application can adjust the impregnation depth and the glue scraping intensity when different specifications of fiber bundles are impregnated, improve the impregnation quality of the fiber bundles, reduce the cost, and ensure the performance and quality of the composite material products.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fiber bundle impregnation, and particularly relates to a fiber winding impregnation debugging device and process. BACKGROUND

[0002] The fiber winding process refers to a process of winding fibers impregnated with resin glue liquid onto a core mold according to a certain rule, and then curing and demolding to become a composite material product. The fibers and the resin are mixed together to form a composite material.

[0003] Impregnation is an important link of the fiber winding process, and determines the impregnation degree, fiber strength and glue content of the wound fiber. The glue content has a great influence on the performance of the fiber material product. If the glue content is too high, the product strength is reduced, and glue flow is serious during molding and curing. If the glue content is too low, the product porosity increases, and the aging resistance and shear strength decrease. The impregnation depth and scraping force of different specifications (different materials or diameters) of fiber bundles during impregnation are different. The existing technology usually replaces different impregnation devices to ensure complete impregnation of the fiber bundle. Different fiber bundles correspond to different devices, which increases the cost. Moreover, the impregnation depth and scraping force are usually set according to existing experience, and cannot be adjusted according to actual use to adapt to the impregnation depth and scraping force of different specifications of fiber bundles, resulting in unstable performance and quality of the composite material product. SUMMARY

[0004] The embodiment of the application provides a fiber winding impregnation debugging device and process, and aims to solve the technical problems that different specifications of fibers need to replace different impregnation devices to ensure complete impregnation of the fiber bundle in the prior art, which increases the cost, and the impregnation depth and scraping force of different specifications of fiber bundles cannot be adjusted according to actual use to adapt to the impregnation depth and scraping force of different specifications of fiber bundles when different fiber bundles are conveyed, resulting in unstable performance and quality of the composite material product.

[0005] In the first aspect, to achieve the above object, the application adopts the technical scheme of a fiber winding impregnation debugging device, comprising:

[0006] An impregnation tank is provided, the impregnation tank is filled with resin, and a weighing sensor for weighing the weight of the resin is arranged at the bottom of the impregnation tank;

[0007] An impregnation assembly is arranged on one side of the impregnation tank, the impregnation assembly comprises an impregnation roller group extending into the impregnation tank, and a power mechanism for driving the impregnation roller group to move in the up-down direction;

[0008] A feeding roller is arranged on the feeding side of the impregnation assembly, and an encoder is arranged on the feeding roller;

[0009] A glue scraping assembly is arranged in the glue tank and located at the discharge side of the glue dipping assembly. The glue scraping assembly comprises a rotating shaft and a glue scraping plate located above the rotating shaft. The glue scraping plate has a freedom of moving in the up-down direction and is provided with a weight adjusting block at the top.

[0010] In combination with the first aspect, in a possible implementation manner, the glue dipping roller set comprises a plurality of first roller shafts which are distributed along a first preset path. The first preset path is parallel to the horizontal direction and perpendicular to the plate surface of the glue scraping plate. The axial directions of the plurality of first roller shafts are parallel to each other. Adjacent first roller shafts are distributed in an up-down staggered manner. At least one first roller shaft is immersed in the resin in the glue tank.

[0011] In combination with the first aspect, in a possible implementation manner, the glue dipping roller set further comprises two second roller shafts. The two second roller shafts are located at the discharge side of the plurality of first roller shafts and have outer circumferential surfaces which are in contact with each other. The two second roller shafts are used to extrude and remove the excess resin of the fiber bundle.

[0012] In combination with the first aspect, in a possible implementation manner, the power mechanism comprises:

[0013] A support is arranged on one side wall of the glue tank.

[0014] A lead screw is rotationally fitted to the support. The lead screw extends in the up-down direction.

[0015] A knob is fixedly arranged at the top end of the lead screw.

[0016] A sliding block is used to move along the axial direction of the lead screw in cooperation with the lead screw. The sliding block is fixedly connected to the glue dipping roller set.

[0017] In combination with the first aspect, in a possible implementation manner, a liquid level meter is arranged in the glue tank.

[0018] In combination with the first aspect, in a possible implementation manner, the fiber winding glue dipping debugging device comprises a heating assembly.

[0019] A tank is located below the glue tank. The tank contains water.

[0020] A second heater is fixedly connected to one side wall of the tank. The electric heating wire of the second heater extends into the tank.

[0021] A second temperature sensor is arranged in the tank.

[0022] The fiber winding impregnation and adjustment device provided by this invention, compared with the prior art, can transmit a test fiber bundle of a certain length through the feeding roller, impregnation assembly, and scraping assembly before the formal transmission of the fiber bundle. The feeding roller measures the length traveled by the test fiber bundle per unit time and rotates with the test fiber bundle, reducing the friction force during transmission. The weighing sensor calculates the weight of resin consumed by the test fiber bundle per unit time. By calculating the resin content in the test fiber bundle, the impregnation depth and scraping force of the test fiber bundle are adjusted according to the calculation results. This allows for the adjustment of appropriate impregnation depth and scraping force for fiber bundles of different specifications during impregnation, eliminating the need to change different impregnation equipment to ensure complete impregnation of the fiber bundle based on its specifications. This improves the impregnation quality of the fiber bundle, reduces costs, greatly optimizes the winding process, and ensures the performance and quality of composite material products.

[0023] Secondly, embodiments of the present invention also provide a fiber winding impregnation and adjustment process, which, using the aforementioned fiber winding impregnation and adjustment device, includes the following steps:

[0024] S10: Inject the resin into the impregnation tank until the resin level reaches a preset height, then start the second heater to heat the resin to a preset temperature;

[0025] S20: Load the test fiber bundle into the fiber winding impregnation and adjustment device;

[0026] S30: Measure the length L traversed by the test fiber bundle within the time period t, and calculate the volume V1 of the test fiber bundle corresponding to the length using Formula 1.

[0027] V1=(L*m1) / ρ1

[0028] Where m1 is the unit weight of the test fiber bundle, and ρ1 is the density of the test fiber bundle before impregnation.

[0029] S40: Calculate the mass difference M of the impregnation tank during the time period t, and calculate the resin volume V2 corresponding to the mass M using Formula 2:

[0030] V2=M / ρ2

[0031] Wherein, ρ2 is the density of the resin;

[0032] S50: Calculate the fiber volume fraction S using Formula 3.

[0033] S = V1 / (V1 + V2)

[0034] S60: When the fiber volume fraction S calculated in step S50 is greater than a preset value S 预设, reducing the number of weight blocks on the top of the glue scraping plate; the fiber volume fraction S calculated in the step S40 is less than a preset value S 预设 , increasing the number of weight blocks on the top of the glue scraping plate;

[0035] S70: repeating the steps S30-S60 until the fiber volume fraction S=S 预设 .

[0036] In combination with the second aspect, in a possible implementation manner, the length L is obtained through the following steps:

[0037] The encoder obtains the number of rotations n of the feeding roller;

[0038] The length L is calculated through Formula Four:

[0039] L=n*l

[0040] Wherein, l is the circumference of the feeding roller.

[0041] In combination with the second aspect, in a possible implementation manner, the mass difference M is obtained through the following steps:

[0042] The weighing sensor obtains the initial weight W0 of the resin in the glue dipping tank before the test fiber bundle is conveyed;

[0043] The test fiber bundle is conveyed to start dipping, and the weighing sensor obtains the weight W1 of the resin in the glue dipping tank at this time after the test fiber bundle is dipped for the time period t;

[0044] The mass difference M in the time period t is calculated through Formula Five:

[0045] M=W0-W1.

[0046] In combination with the second aspect, in a possible implementation manner, the fiber volume fraction S 预设 ranges from 64% to 68%. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 A perspective structural schematic diagram of the fiber winding and dipping debugging device provided by the embodiment of the present application;

[0048] Figure 2 A perspective structural schematic diagram of the glue dipping tank adopted by the embodiment of the present application;

[0049] Figure 3 A front view structural schematic diagram of the glue dipping tank adopted by the embodiment of the present application;

[0050] Figure 4 A Figure 3 A sectional view structural schematic diagram along the line A-A;

[0051] Figure 5 A perspective view of a heating assembly used in the embodiment of the present application;

[0052] Figure 6 A process flow diagram of the fiber winding and impregnation debugging process of the present application.

[0053] Legend of reference signs:

[0054] 10 - cabinet; 11 - operation table; 12 - impregnation tank; 13 - weighing sensor; 14 - liquid level meter; 15 - guide wheel; 16 - filament separation groove; 17 - opening; 171 - baffle; 18 - first heater; 19 - first temperature sensor;

[0055] 20 - impregnation assembly; 21 - impregnation roller group; 22 - first roller shaft; 23 - second roller shaft;

[0056] 30 - feeding roller; 31 - encoder;

[0057] 40 - scraping assembly; 41 - rotating shaft; 42 - scraping plate; 43 - weight adjusting block;

[0058] 50 - power mechanism; 51 - support; 52 - lead screw; 53 - knob; 54 - sliding block; 541 - through hole; 542 - sliding groove; 55 - sliding rod; 56 - locking mechanism; 561 - clamping block; 562 - adjusting rod;

[0059] 60 - glue supplementing assembly; 61 - storage tank; 62 - liquid supply pipe; 63 - power pump;

[0060] 70 - heating assembly; 71 - box body; 72 - second heater; 73 - second temperature sensor; 74 - valve. DETAILED DESCRIPTION

[0061] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0062] Please refer to Figures 1 to 6The present application is described below. The fiber winding resin impregnation debugging device comprises a resin impregnation tank 12, a resin impregnation assembly 20, a feeding roller 30 and a resin scraping assembly 40. The resin impregnation tank 12 contains resin, and is provided with a weighing sensor 13 at the bottom for weighing the resin. The resin impregnation assembly 20 is located on one side of the resin impregnation tank 12, and comprises a resin impregnation roller set 21 extending into the resin impregnation tank 12, and a power mechanism 50 for driving the resin impregnation roller set 21 to move in the up-down direction. The feeding roller 30 is arranged on the feeding side of the resin impregnation assembly 20, and is provided with an encoder 31. The resin scraping assembly 40 is arranged in the resin impregnation tank 12 and located on the discharging side of the resin impregnation assembly 20, and comprises a rotating shaft 41 and a resin scraping plate 42 located above the rotating shaft 41. The resin scraping plate 42 has the freedom to move in the up-down direction, and is provided with a weight adjusting block 43 at the top.

[0063] It should be noted that the resin impregnation depth of fiber bundles of different specifications (different diameters and different materials) is different. The height of the resin impregnation roller set 21 is adjusted for fiber bundles of different specifications, so as to change the resin impregnation depth of the fiber bundles, so that the fiber bundles of different specifications are fully impregnated. For fiber bundles of special materials, they do not need resin impregnation treatment during winding. At this time, the power mechanism 50 is operated to move the resin impregnation assembly 20 upward and remove the weight adjusting block 43 on the resin scraping plate 42. The weight adjusting block 43 can be a weight.

[0064] Optionally, four weighing sensors 13 can be arranged at the four corners of the resin impregnation tank 12. The four weighing sensors 13 measure the weight of the resin in the resin impregnation tank 12 together. After the weighing is completed, the average value of the data measured by the four weighing sensors 13 is obtained, and then the consumption of the resin is obtained, so that the data measured by the weighing sensor 13 is more accurate.

[0065] The fiber winding impregnation debugging device provided by the application has the following advantages: before the formal transmission of the fiber bundle, a length of test fiber bundle is transmitted through the feeding roller 30, the impregnation assembly 20 and the scraping assembly 40; the feeding roller 30 measures the length of the test fiber bundle passing through in unit time and rotates with the test fiber bundle, thereby reducing the friction when the test fiber bundle is transmitted; the weighing sensor 13 calculates the weight of the resin consumed by the test fiber bundle in unit time, and according to the length of the test fiber bundle passing through in unit time and the weight of the resin consumed by the test fiber bundle in unit time, the content of the resin in the test fiber bundle is calculated; according to the calculation result, the impregnation depth of the test fiber bundle and the scraping intensity are adjusted, so that the content of the resin in the test fiber bundle meets the requirements; then the fiber bundle is formally transmitted, so that different specifications of fiber bundles can be adjusted to appropriate impregnation depth and scraping intensity when impregnated, and different impregnation equipment does not need to be replaced according to the different specifications of the fiber bundles to be impregnated to ensure that the fiber bundle is completely impregnated, improve the impregnation quality of the fiber bundle, reduce the cost, greatly optimize the winding process, ensure the performance and quality of the composite material product, and different fiber bundles can be adjusted to the impregnation depth and scraping intensity according to the actual situation to ensure the use requirements of different specifications of fiber bundles.

[0066] The fiber winding impregnation debugging device provided by the application has the following advantages: before the formal transmission of the fiber bundle, a length of test fiber bundle is transmitted through the feeding roller 30, the impregnation assembly 20 and the scraping assembly 40; the feeding roller 30 measures the length of the test fiber bundle passing through in unit time and rotates with the test fiber bundle, thereby reducing the friction when the test fiber bundle is transmitted; the weighing sensor 13 calculates the weight of the resin consumed by the test fiber bundle in unit time, and according to the length of the test fiber bundle passing through in unit time and the weight of the resin consumed by the test fiber bundle in unit time, the content of the resin in the test fiber bundle is calculated; according to the calculation result, the impregnation depth of the test fiber bundle and the scraping intensity are adjusted, so that the content of the resin in the test fiber bundle meets the requirements; then the fiber bundle is formally transmitted, so that different specifications of fiber bundles can be adjusted to appropriate impregnation depth and scraping intensity when impregnated, and different impregnation equipment does not need to be replaced according to the different specifications of the fiber bundles to be impregnated to ensure that the fiber bundle is completely impregnated, improve the impregnation quality of the fiber bundle, reduce the cost, greatly optimize the winding process, ensure the performance and quality of the composite material product, and different fiber bundles can be adjusted to the impregnation depth and scraping intensity according to the actual situation to ensure the use requirements of different specifications of fiber bundles.

[0067] It should be noted that the feeding roller 30 and the impregnation assembly 20 are further provided with a guide wheel 15, and the outer periphery of the guide wheel 15 is recessed to form a plurality of split grooves 16, which are sequentially arranged along the axial direction of the guide wheel 15 (as shown in Figure 1 and Figure 2 The guide wheel 15 is provided with a plurality of split grooves 16 for placing single fiber bundles, which can maintain a certain distance between adjacent fiber bundles when multiple fiber bundles are impregnated at the same time, prevent mutual entanglement between adjacent fiber bundles, and affect complete impregnation. In addition, it is not convenient to remove excess resin from the fiber bundle during scraping, and the fiber bundle needs to be wound after impregnation, and the mutual entanglement of the fiber bundles will affect the winding quality during the winding process.

[0068] Specifically, the guide wheel 15 can be connected to the side wall of the impregnation tank 12 through a fixed shaft, and the guide wheel 15 is rotatably connected to the fixed shaft, which can reduce the friction between the fiber bundle and the guide wheel 15 during conveying.

[0069] Specifically, the fiber winding impregnation debugging device further comprises a cabinet 10, and the impregnation tank 12 and the feeding roller 30 are located in the cabinet 10. The feeding roller 30 is arranged in the cabinet 10 and located on the feeding side of the impregnation assembly 20. The cabinet 10 is provided with openings 17 (as shown in Figure 1 for the fiber bundle to pass through.

[0070] In some embodiments, an improved embodiment of the fiber winding impregnation debugging device can adopt the structure as shown in Figure 2 The impregnation roller group 21 comprises a plurality of first roller shafts 22 spaced along a first preset path, and the first preset path is parallel to the horizontal direction and perpendicular to the surface of the scraping plate 42. The axial directions of the plurality of first roller shafts 22 are parallel to each other, and adjacent first roller shafts 22 are arranged in an upper and lower staggered manner. At least one first roller shaft 22 is immersed in the resin in the impregnation tank 12. By arranging adjacent first roller shafts 22 in an upper and lower staggered manner, the fiber bundle is moved forward for impregnation by winding around the plurality of first roller shafts 22, so that the outer surface of the fiber bundle can be immersed in the resin, thereby ensuring the impregnation quality of the fiber bundle.

[0071] Specifically, the number of first roller shafts 22 can be five, and the fiber bundle passes from the bottom of the first first roller shaft 22, from the top of the second first roller shaft 22, from the bottom of the third first roller shaft 22, from the top of the fourth first roller shaft 22, and from the bottom of the fifth first roller shaft 22. By this form, the fiber bundle can be immersed in the resin multiple times during conveying, thereby ensuring the impregnation quality of the fiber bundle.

[0072] In some embodiments, an improved embodiment of the fiber winding impregnation debugging device can adopt the structure as shown in Figure 2 Referring to Figure 2The resin impregnation roller set 21 further comprises two second roller shafts 23 located at the discharge side of the first roller shafts 22 and having outer circumferential surfaces abutting each other, and used for extruding and removing the excess resin from the fiber bundle. The outer circumferential surfaces of the two second roller shafts 23 abut each other and are located at the discharge side of the first roller shafts 22. The fiber bundle is in a wave shape around the first roller shafts 22 and is uniformly conveyed along the first preset path at a constant speed. The resin content in the fiber bundle cannot be too much due to the manufacturing requirements of the composite material formed by the resin and the fiber bundle. After the fiber bundle is impregnated with resin, the excess resin on the outer periphery of the fiber bundle can be preliminarily extruded and removed through the gap between the two second roller shafts 23, so as to ensure the impregnation quality of the composite material.

[0073] In some embodiments, an improved embodiment of the fiber winding resin impregnation device can adopt the structure as shown in Figure 2 and Figure 3 . Referring to Figure 2 and Figure 3 , the power mechanism 50 comprises a bracket 51, a lead screw 52, a knob 53 and a sliding block 54. The bracket 51 is arranged on one side wall of the resin impregnation tank 12. The lead screw 52 is rotationally connected to the bracket 51 and extends in the up-down direction. The knob 53 is fixedly arranged at the top end of the lead screw 52. The sliding block 54 is arranged in cooperation with the lead screw 52 for moving along the axial direction of the lead screw 52, and is fixedly connected to the resin impregnation roller set 21. The sliding block 54 moves along the axial direction of the lead screw 52 in cooperation with the lead screw 52. The sliding block 54 can slide along the axial direction of the lead screw 52 by rotating the knob 53, thereby rotating the lead screw 52, so as to change the height of the resin impregnation roller set 21, and further adjust the resin impregnation depth of the fiber bundle, thereby reducing the labor intensity. By adjusting the resin impregnation depth, different specifications of the fiber bundle can be adjusted to the suitable resin impregnation depth during resin impregnation, thereby improving the resin impregnation quality of the fiber bundle.

[0074] Optionally, the resin impregnation roller set 21 can be rotationally connected to the sliding block 54, and the resin impregnation roller set 21 can rotate together with the fiber bundle, so as to reduce the friction force when conveying the fiber bundle.

[0075] Specifically, the bracket 51 further comprises a sliding rod 55, the axial direction of the sliding rod 55 is parallel to the lead screw 52, the sliding block 54 is provided with a through hole 541 in sliding cooperation with the sliding rod 55, and the sliding block 54 is provided with a sliding groove 542. The power mechanism 50 further comprises a locking mechanism 56, which comprises two clamping blocks 561 and an adjusting rod 562. The two clamping blocks 561 are respectively arranged in sliding cooperation with the sliding grooves 542, and the two clamping blocks 561 are arranged in cooperation for clamping the sliding rod 55. The adjusting rod 562 is connected to the two clamping blocks 561, and is used for driving the two clamping blocks 561 to approach each other to clamp the sliding rod 55 (as shown in Figure 2 , FIG. and Figure 4The slider 54 is in sliding fit with the slide rod 55, and rotating the screw rod 52 causes the slider 54 to move along the axial direction of the screw rod 52, and in the moving process, the slider 54 also slides along the slide rod 55, thereby improving the stability of the slider 54 in the process of sliding up and down along the screw rod 52; the two clamping blocks 561 are respectively located on the two sides of the slide rod 55, and after rotating the screw rod 52 to move the slider 54 to the required position and determining the impregnation depth of the fiber bundle, the adjusting rod 562 is rotated to cause the two clamping blocks 561 to approach each other until the clamping blocks are clamped on the outer periphery of the slide rod 55, thereby achieving locking and preventing the impregnation roller set 21 from sliding downward due to gravity, and further fixing the height of the impregnation roller set 21 to ensure that the fiber bundle is smoothly impregnated.

[0076] Optionally, the two clamping blocks 561 are respectively provided with arc surfaces suitable for the outer peripheral surface of the slide rod 55, which increases the contact surface with the slide rod 55 and improves the stability of the two clamping blocks 561 in cooperation with clamping the slide rod 55.

[0077] Optionally, the two clamping blocks 561 are respectively provided with reverse threads, and the adjusting rod 562 is a screw rod or a screw rod connection, and by rotating the adjusting rod 562, the distance between the two clamping blocks 561 is controlled, so that the two clamping blocks 561 approach each other to lock the slide rod 55, or separate from each other to loosen the slide rod 55.

[0078] In some embodiments, an improved embodiment of the fiber winding impregnation debugging device can adopt a structure as shown in Figure 1 . Referring to Figure 1 , the impregnation tank 12 is provided with a liquid level meter 12. When the resin in the impregnation tank 12 reaches the lowest liquid level, an alarm can be issued and automatic resin supplementing is performed to make the liquid level of the resin in the impregnation tank 12 reach the qualified height. Compared with the form of manually observing the height of the resin in the impregnation tank 12 and supplementing the resin, the labor intensity of the workers is effectively reduced, the work efficiency is improved, and the timely resin supplementing by the workers can be prevented, thereby ensuring the normal operation of the fiber winding impregnation debugging device.

[0079] It should be noted that the fiber winding impregnation debugging device further includes a resin supplementing assembly 60 (as shown in Figure 1 ). The resin supplementing assembly 60 includes a storage tank 61 and a liquid supply pipe 62. The storage tank 61 is arranged in the cabinet 10 and located below the operation table 11. The storage tank 61 is used to contain resin. The two ends of the liquid supply pipe 62 are respectively connected to the impregnation tank 12 and the storage tank 61. The liquid supply pipe 62 is provided with a power pump 63. The liquid level meter 14 and the power pump 63 are in communication connection. When the height of the resin in the impregnation tank 12 reaches the lowest liquid level, the liquid level meter 14 controls the power pump 63 to start, and the power pump 63 supplements the resin in the storage tank 61 into the impregnation tank 12, thereby completing automatic resin supplementing and effectively reducing the labor intensity of the workers.

[0080] It should be noted that the resin is composed of two components, which are referred to as component A and component B. The two components react when mixed together, so two storage tanks 61 are required to store component A and component B respectively. When the resin needs to be replenished, the two components are extracted according to the proportion and replenished into the impregnation tank 12 (as shown in Figure 1 ).

[0081] Optionally, when the liquid level of the replenished resin exceeds the qualified height, the replenishment of the resin is stopped.

[0082] In some embodiments, a modified embodiment of the fiber winding impregnation debugging device can adopt the structure as shown in Figure 1 and Figure 5 . Referring to Figure 1 and Figure 5 , the fiber winding impregnation debugging device includes a heating assembly 70, which includes a box 71, a second heater 72, and a second temperature sensor 73. The box 71 is located below the impregnation tank 12 and contains water. The second heater 72 is fixedly connected to one side wall of the box 71, and the heating wire of the second heater 72 extends into the box 71. The second temperature sensor 73 is arranged in the box 71. When the resin is injected into the impregnation tank 12, the second heater 72 heats the water in the box 71, and the water vapor generated by the heated water then heats the resin in the impregnation tank 12 above the box 71, thereby maintaining the resin at a suitable temperature and improving the flowability of the resin, so that the fiber bundle can fully absorb the resin and improve the impregnation efficiency of the fiber bundle. The second temperature sensor 73 can monitor the temperature in the box 71 at all times. If the temperature in the box 71 is too low, the second heater 62 is controlled to start heating to ensure the impregnation process of the fiber bundle.

[0083] Optionally, the second heater 62 is a heating couple, and multiple heating couples can be arranged on the side wall of the box 71 to improve the heating efficiency. The second temperature sensor 73 is a water temperature sensor.

[0084] In specific implementation, the second temperature sensor 73 and the second heater 72 are respectively communicatively connected to the control system. Before the test fiber bundle is conveyed, a preset temperature is set on the control system to control the second heater 72 to heat.

[0085] It should be noted that the bottom of the box 71 is provided with a valve 74 (as shown in Figure 5 ), which can be connected to a water supply pipe to replenish water when the water in the box 71 is insufficient, or the valve 17 can be opened to drain the water in the box 71 after the resin no longer needs to be heated. A groove can be formed on the side wall of the box 71, and a glass sheet is arranged at the position of the groove to observe the amount of water in the box 71.

[0086] Specifically, a first heater 18 is provided on the side wall of the cabinet 10, and a first temperature sensor 19 is also provided inside the cabinet 10 (e.g., Figure 1 (As shown). The first heater 18 heats the space inside the cabinet 10, making the temperature inside the cabinet 10 the same as the temperature of the resin in the impregnation tank 12. This allows the fiber bundles to better absorb the resin, improving the impregnation effect. When the fiber bundles are impregnated and then scraped, because the temperature inside the cabinet 10 is the same as the temperature of the resin, the resin on the outer periphery of the fiber bundles does not solidify due to the low external temperature, making it easier for the scraping assembly 40 to remove the resin from the fiber bundles. The first temperature sensor 19 constantly monitors the temperature inside the cabinet 10. If the temperature inside the cabinet 10 is too low, it controls the first heater 18 to start heating to ensure the impregnation process of the fiber bundles.

[0087] Optionally, the first heater 18 is an electric heater.

[0088] Optionally, multiple baffles 171 can be provided at the opening 17, connected to the cabinet 10 via threaded connectors. Fiber bundles pass through the gap between two adjacent baffles 171. Different specifications of fiber bundles have different tension levels, therefore the transmission height of different fiber bundles also varies. The position of the baffles 171 is adjusted according to the transmitted fiber bundles to ensure that the test fiber bundles can pass through the opening 17 normally. The remaining gaps in the opening 17 are connected by baffles 171 to prevent excessive temperature loss inside the cabinet 10 (e.g., ...). Figure 1 (As shown).

[0089] Based on the same inventive concept, this application also provides a fiber winding impregnation and adjustment process, which uses the above-mentioned fiber winding impregnation and adjustment device and includes the following steps:

[0090] S10: Inject the resin into the impregnation tank 12. When the resin level reaches the preset height, start the second heater 15 to heat the resin to the preset temperature.

[0091] S20: Load the test fiber bundle into the fiber winding impregnation and adjustment device;

[0092] S30: Measure the length L traveled by the test fiber bundle within the time period t, and calculate the corresponding fiber bundle volume V1 using Formula 1.

[0093] V1=(L*m1) / ρ1

[0094] Where m1 is the unit weight of the test fiber bundle, and ρ1 is the density of the test fiber bundle before impregnation.

[0095] S40: Calculate the mass difference M within the impregnation tank 12 over time period t, and calculate the resin volume V2 corresponding to mass M using formula 2:

[0096] V2=M / ρ2

[0097] wherein p2 is the density of the resin;

[0098] S50: Calculate the fiber volume fraction S by Formula Three:

[0099] S = V1 / (V1+V2)

[0100] S60: When the fiber volume fraction S calculated in the S50 step is greater than the preset value S 预设 , reduce the number of weight blocks 43 on the top of the glue scraping plate 42; when the fiber volume fraction S calculated in the S40 step is less than the preset value S 预设 , increase the number of weight blocks 43 on the top of the glue scraping plate 42;

[0101] S70: Repeat the steps S30-S60 until the fiber volume fraction S = S 预设 .

[0102] It should be noted that the time period t can be 15s, and the data acquisition can be controlled by a PLC controller, which collects data every 15s (the adjacent two times can be continuous collection or collection after a period of time), collects the length of the fiber tows and the consumption of the resin within 15s, and calculates the volume V1 of the test fiber tows and the volume V2 of the resin, respectively, and then calculates the fiber volume fraction, and compares it with the preset value S 预设 , and if it is unqualified, an alarm is issued; as an example, the time period t of each step in the fiber winding impregnation debugging process of the application is 15s.

[0103] The fiber winding impregnation debugging process provided by the application has the following specific implementation process: the resin is injected into the tank, and the liquid level of the resin reaches a preset height; the second heater 15 is started to heat the resin in the impregnation tank 12 to a preset temperature; after reaching the preset temperature, the test fiber tows are manually passed through the feeding roller 30, the impregnation assembly 20 and the glue scraping assembly 40, and then the test fiber tows are connected to the equipment for winding the fiber tows; the test fiber tows are started to be conveyed; the feeding roller 30 rotates with the test fiber tows; the encoder 31 measures the number of revolutions of the feeding roller 30 within 15s; the length L of the test fiber tows within 15s is calculated by the circumference of the feeding roller 30, and the information is transmitted to the PLC controller; the volume V1 of the test fiber tows within 15s is calculated by Formula One by inputting the unit weight m1 of the test fiber tows and the density p1 of the test fiber tows before impregnation; then the test fiber tows pass through the impregnation assembly 20 and the excess resin is removed by the glue scraping assembly 40; the mass difference M of the resin in the impregnation tank 12 within 15s is measured by the weighing sensor 13, and the data is transmitted to the PLC controller; the volume V2 of the resin corresponding to the mass M is calculated by Formula Two by inputting the density p2 of the resin; and the fiber volume fraction S is calculated by Formula Three and compared with the preset value S预设 In comparison, if unqualified, an alarm is sent out, the glue scraping intensity can be changed by increasing or decreasing the number of weight blocks 43 on the top of the glue scraping plate 42, the weight of the resin removed by the test fiber bundle passing through the glue scraping plate 42 is changed, the removed resin flows into the impregnation tank 12, and then the resin consumption of the test fiber bundle 15s is changed, the PLC controller continues to collect and calculates the fiber volume fraction after 15s, and compares with the preset value S 预设 In comparison, if unqualified, continue to adjust until the fiber volume fraction S = the preset value S 预设 After the test is completed, the position of the impregnation roller group 21 and the number of weight blocks 43 on the glue scraping plate 42 at this time are recorded, the formal transmission of the fiber bundle is started, and the fiber volume fraction is continuously calculated during the transmission process. If unqualified is found during the transmission process, continue to adjust, so that the resin content in the fiber bundle always remains at an appropriate value.

[0104] Optionally, the impregnation depth and the glue scraping intensity of different specifications of fiber bundles are different, and the impregnation depth and the glue scraping intensity corresponding to different specifications of fiber bundles can be recorded, so that when the next time the fiber bundle of this specification needs to be transmitted, the impregnation depth and the glue scraping intensity can be directly adjusted according to the recorded values, and the work efficiency is improved.

[0105] It should be noted that after the test fiber bundle is adjusted, a fiber bundle of the same specification as the test fiber bundle can be selected for wet winding process; or another specification of fiber bundle can be tested, at this time a length of the fiber bundle can be taken as a test fiber bundle for testing, or a length of the front end of the fiber bundle can be used as a test fiber bundle for testing. Because the length of the fiber bundle passing through during the test process accounts for a small proportion of the overall length, the unqualified fiber volume fraction of the test fiber bundle does not affect the overall strength of the composite product formed after the fiber bundle is impregnated, so the remaining fiber bundle can be transported after the adjustment is completed.

[0106] During the calculation of the fiber volume fraction, when the weight of the weight blocks 43 on the glue scraping plate 42 alone is not enough to adjust in place, the height of the test impregnation roller group 21 can be adjusted to assist the adjustment;

[0107] The fiber winding impregnation debugging process provided by the present application can use a test fiber bundle of a certain distance before the formal transmission of the fiber bundle, calculate the fiber volume fraction, adjust the specific positions of the impregnation assembly 20 and the glue scraping assembly 40 according to the fiber volume fraction, and start the formal transmission. During the formal transmission of the fiber bundle, the fiber volume fraction is monitored and calculated at any time, and if unqualified, an alarm is sent out to remind manual adjustment, and the controllability during the fiber winding impregnation process is improved.

[0108] In some embodiments, an improved embodiment of the above fiber winding impregnation debugging process is as follows.

[0109] The length L is obtained by the following steps:

[0110] The encoder 31 obtains the number of rotations n of the feeding roller 30;

[0111] The length L is calculated by Formula Four:

[0112] L = n * l

[0113] wherein l is the circumference of the feeding roller 30.

[0114] The encoder 31 can obtain the number of rotations of the feeding roller 30 in the time period t, which can ensure the accuracy of the data and reduce the labor intensity compared with manually recording the number of rotations of the feeding roller 30 in the time period t.

[0115] In some embodiments, an improved embodiment of the above-described fiber winding and sizing process is as follows.

[0116] The mass difference M is obtained by the following steps:

[0117] The weighing sensor 13 obtains the initial weight W0 of the resin in the sizing tank 12 before the test fiber bundle is conveyed;

[0118] The test fiber bundle is conveyed to start sizing, and the weighing sensor 13 obtains the weight W1 of the resin in the sizing tank 12 after the test fiber bundle is sized for a time period t;

[0119] The mass difference M in the time period t is calculated by Formula Five:

[0120] M = W0 - W1.

[0121] In a specific implementation, after the resin in the tank is injected, the weight W0 of the resin at this time is recorded, and then the test fiber bundle is conveyed, the test fiber bundle passes into the sizing tank 12 and starts sizing, and the resin in the sizing tank 12 is consumed during the sizing process; for example, the initial weight of the resin is W0 = 400 g, and the weight of the resin in the sizing tank 12 is W1 = 390 g after the interval time period t, and the difference between W0 and W1 is 10 g, which is the weight of the resin consumed in the test fiber bundle time period t.

[0122] It should be noted that W1 represents the weight of the resin in the sizing tank 12 at the time of measurement; and W0 represents the weight of the resin in the sizing tank 12 at the time of the last measurement.

[0123] In some embodiments, an improved embodiment of the above-described fiber winding and sizing process is as follows. The fiber volume fraction S ranges from 64% to 68%.

[0124] If the value of the fiber volume fraction S is too large, it indicates that the content of the resin in the test fiber bundle is too low, the porosity of the fiber product is increased, and the anti-aging and shear strength are decreased; if the value of the fiber volume fraction S is too small, it indicates that the content of the resin in the test fiber bundle is too high, the strength of the fiber product is reduced, and too much resin flows out during the winding forming and curing of the fiber product, causing waste of the resin; by limiting the range of the fiber volume fraction, the content of the resin in the test fiber bundle is ensured to be in a proper range, and the quality and performance of the composite product formed by the test fiber bundle and the resin are ensured.

[0125] It should be noted that the preset height of the liquid level of the resin is 55cm-70cm.

[0126] By limiting the height of the resin in the impregnation tank 12, when the test fiber bundle passes through the impregnation tank 12 for impregnation, the test fiber bundle can be completely immersed in the tank body, so that the test fiber bundle is filled with resin, and the quality of the composite product is ensured.

[0127] Specifically, the larger the diameter of the fiber bundle of the same specification, the more resin is absorbed during impregnation, so the preset height of the resin needs to be higher at this time.

[0128] Optionally, when the liquid level meter 14 detects that the height of the liquid level of the resin is lower than the preset height, information is transmitted to the PLC controller, the PLC controller performs glue supplementing, and the amount of resin supplementing is transmitted to the PLC controller, which will be calculated in the next calculation of the fiber volume fraction, so that the fiber volume fraction can be correctly calculated.

[0129] It should be noted that the preset temperature of the resin is 35℃-45℃.

[0130] If the heating temperature of the resin is too high, thermal decomposition of the resin will occur, affecting the service life of the resin; if the heating temperature of the resin is too low, the flowability of the resin will be affected, resulting in that the test fiber bundle cannot absorb enough resin during impregnation; by limiting the preset temperature of the resin, the flowability of the resin is effectively improved, the test fiber bundle can fully absorb the resin, the impregnation effect of the test fiber bundle is improved, and the resin can fully play its role.

[0131] It should be noted that the temperature in the cabinet body 10 is the same as the preset temperature of the resin, which is also 35℃-45℃.

[0132] Optionally, when the preset temperature of the resin is 40℃, the temperature in the cabinet 10 is also 40℃.

[0133] Specifically, the process flow of the fiber winding impregnation debugging process of the present application is as follows Figure 6As shown, after the resin is injected into the impregnation tank 12, the PLC controller controls the second heater 72 to heat the water in the box 71, and then heats the resin in the impregnation tank 12, and controls the second temperature sensor 73 to detect the temperature in the box 71, and when the temperature is detected to reach a suitable temperature, a signal is transmitted to the PLC controller, and the PLC controller controls the second heater 72 to stop heating; while the PLC controller controls the second heater 72 to heat, the PLC controller controls the first heater 18 to heat the space in the cabinet 10, and controls the first temperature sensor 19 to detect the temperature in the cabinet 10, and transmits a signal to the PLC controller, and when the PLC controller detects that the temperature in the cabinet 10 and the temperature of the resin are the same, the PLC controller controls the first heater 18 to stop heating; start conveying the test fiber, the PLC controller collects data and transmits a signal to the encoder 31 and the weighing sensor 13, the encoder 31 records the number of turns n of the test fiber bundle in time t, and transmits information to the PLC controller; the PLC controller controls the weighing sensor 13 to measure the weight of the resin in the impregnation tank 12, and transmits information to the PLC controller; the PLC controller controls the liquid level meter 14 to detect the liquid level of the resin, and when the liquid level of the resin is lower than the preset height, the information is transmitted to the PLC controller, and the PLC controller performs glue supplementing, and the amount of resin supplementing is transmitted to the PLC controller.

[0134] A specific embodiment of the embodiment of the present application is:

[0135] (1) Inject the resin into the impregnation tank 12, so that the liquid level of the resin reaches 10cm-20cm, start the second heater 72 to make the temperature of the resin reach 40℃, and start the first heater 18 to make the temperature in the cabinet 10 also reach 40℃;

[0136] (2) Put the test fiber bundle into the fiber winding impregnation debugging device, and connect the test fiber bundle with the equipment for winding the fiber bundle, and then start the PLC controller to collect data (the test fiber bundle can be a section before the formal fiber bundle, or a section taken separately);

[0137] (3) Convey the test fiber bundle, the test fiber bundle drives the feeding roller 30 to rotate, the encoder 31 calculates the number of turns n of the feeding roller 15s, and calculates the length L of the test fiber bundle in 15s through formula three: L=n*l, and transmits the information of the length L to the PLC controller;

[0138] (4) test fiber bundle into the impregnation tank 12, through the impregnation assembly 30 begins to impregnate, and through the glue scraping assembly 40 to remove the test fiber bundle excess resin, weighing sensor 13 measures the weight of the resin in the impregnation tank 12, through formula five: M = W0-W1 to calculate the mass difference M of the resin in the impregnation tank 15s, through formula two: V2 = M / ρ2, to calculate the volume V2 of the resin, the volume V2 information is transmitted to the PLC controller;

[0139] (5) the PLC controller according to the length L transmitted, through formula one: V1 = (L*m1) / ρ1 to calculate the volume V1 of the test fiber bundle in 15s, then through formula three: S = V1 / (V1+V2) to calculate the fiber volume fraction S of the test fiber bundle in 15s, and with the preset value S 预设 comparison, S 预设 64% ~ 68%;

[0140] (6) if the calculated fiber volume fraction S is greater than the preset value S 预设 , reduce the number of weight blocks 43 on the top of the glue scraping plate 42; the calculated fiber volume fraction S is less than the preset value S 预设 , increase the number of weight blocks 43 on the top of the glue scraping plate 42;

[0141] (7) the PLC controller collects data every 15s and continuously collects, repeats the above steps (3) and (6), until the fiber volume fraction S = S 预设 , and record the height of the impregnation roller group 21 and the number of weight blocks 43 on the glue scraping plate 42 at this time;

[0142] (8) formal transmission of fiber bundle, and in the transmission process, the PLC controller continues to detect the fiber volume fraction of the fiber bundle, if not S 预设 , then issue a warning to remind the worker to adjust;

[0143] (9), in the transmission process, the liquid level meter 14 detects that the resin liquid level is lower than the preset height, transmits the information to the PLC controller, the PLC controller performs glue supplementing, and the resin supplementing amount is transmitted to the PLC controller, which will be accounted for in the next calculation of the fiber volume fraction, to ensure that the fiber volume fraction can be correctly calculated.

[0144] The above only describes the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fiber winding impregnation and adjustment device, characterized in that, The application relates to a fiber winding resin impregnation debugging device. The fiber winding resin impregnation debugging device comprises a resin impregnation tank, a resin impregnation assembly, a feeding roller, a scraping assembly and a power mechanism. The resin impregnation tank is filled with resin and is provided with a weighing sensor at the bottom for weighing the resin. The resin impregnation assembly is arranged on one side of the resin impregnation tank and comprises resin impregnation roller groups extending into the resin impregnation tank and a power mechanism for driving the resin impregnation roller groups to move in the up-down direction. The feeding roller is arranged on the feeding side of the resin impregnation assembly and is provided with an encoder. The scraping assembly is arranged in the resin impregnation tank and is located on the discharging side of the resin impregnation assembly.

2. The fiber-winding impregnation debugging apparatus of claim 1, wherein, The scraping assembly comprises a rotating shaft and a scraping plate located above the rotating shaft.

3. The fiber-winding impregnation debugging apparatus of claim 2, wherein, The scraping plate has the freedom of moving in the up-down direction and is provided with weight adjusting blocks at the top.

4. The fiber-winding impregnation debugging apparatus of claim 1, wherein, The number of the weight adjusting blocks can be adjusted. The detection data of the weighing sensor and the encoder are used to calculate the content of the resin in the test fiber bundle to determine whether the resin content of the test fiber bundle meets the requirements. The height of the resin impregnation roller groups is adjusted by the power mechanism to change the resin impregnation depth of the test fiber bundle. Or / and, the number of the weight adjusting blocks on the scraping plate is adjusted to adjust the content of the resin in the test fiber bundle. The resin impregnation roller groups comprise a plurality of first roller shafts distributed along a first preset path.

5. The fiber-winding impregnation debugging apparatus of claim 1, wherein, The first preset path is parallel to the horizontal direction and perpendicular to the plate surface of the scraping plate.

6. The fiber-winding impregnation debugging apparatus of claim 1, wherein, The axial directions of the plurality of first roller shafts are parallel to each other. The adjacent first roller shafts are arranged in the up-down staggered mode. At least one first roller shaft is immersed in the resin in the resin impregnation tank. The resin impregnation roller groups further comprise two second roller shafts.

7. A fibre-winding impregnation commissioning process, characterised in that, The two second roller shafts are located on the discharging side of the plurality of first roller shafts and are in surface contact with each other. The two second roller shafts are used for extruding and removing the excess resin of the fiber bundle. The power mechanism comprises a support arranged on one side wall of the resin impregnation tank, a screw rod rotationally fitted in the support and extending in the up-down direction, a knob fixedly arranged at the top end of the screw rod, a sliding block matched with the screw rod for moving along the axial direction of the screw rod and fixedly connected with the resin impregnation roller groups. A liquid level meter is arranged in the resin impregnation tank. The fiber winding resin impregnation debugging device comprises a heating assembly. The heating assembly comprises a box arranged below the resin impregnation tank, water filled in the box, a second heater fixedly connected with one side wall of the box and having electric heating wires extending into the box and a second temperature sensor arranged in the box. The fiber winding resin impregnation debugging device comprises the following steps. S10: resin is injected into the resin impregnation tank, the liquid level of the resin reaches a preset height, the second heater is started to heat the resin to a preset temperature; S20: a test fiber bundle is loaded into the fiber winding resin impregnation debugging device; S30: the length L walked by the test fiber bundle in a time period t is measured, the volume V1 of the test fiber bundle corresponding to the length is calculated through a formula one: V1= (L*m1) / p1 Wherein, m1 is the unit weight of the test fiber bundle, p1 is the density of the test fiber bundle before resin impregnation; S40: the mass difference M of the resin impregnation tank in the time period t is calculated, the volume V2 of the resin corresponding to the mass M is calculated through a formula two: V2=M / p2 wherein p2 is the density of the resin; S50: calculating the fiber volume fraction S by Formula Three: S = V1 / (V1+V2) S60: when the fiber volume fraction S calculated in the S50 step is greater than a preset value S 预设 , the number of weight blocks on the top of the kiss roll is decreased; the fiber volume fraction S calculated in the S40 step is less than a preset value S 预设 , the number of weight blocks on the top of the kiss roll is increased; S70: repeating the steps S30-S60 until the fiber volume fraction S=S 预设 .

8. The fiber-winding impregnation setup process of claim 7, wherein, The obtaining of the length L comprises the steps of: The encoder obtains the rotation number n of the feeding roller; The length L is calculated by Formula Four: L = n*l Wherein l is the circumference of the feeding roller.

9. The fiber-winding impregnation setup process of claim 7, wherein, The obtaining of the mass difference M comprises the steps of: The weighing sensor acquires the initial weight W0 of the resin in the impregnation tank before the test fiber bundle is conveyed; After the test fiber bundle is conveyed to start impregnation, the weighing sensor acquires the weight W1 of the resin in the impregnation tank at this time after the test fiber bundle is impregnated for the time period t; The mass difference M in the time period t is calculated by Formula Five: M = W0-W1.

10. The fiber-winding impregnation setup process of claim 7, wherein, The fiber volume fraction S 预设 ranges from 64% to 68%.

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