High-performance fiber automatic sample preparation device

Abstract

The utility model relates to an automatic sample preparation device for high-performance fiber, which comprises a box body, a hot-pressing die, a filament winding frame, a filament bundle adjusting component, a gum dipping tank and a control system, the hot-pressing die, the filament winding frame, the filament bundle adjusting component and the gum dipping tank are arranged in the box body, and the control system is arranged on the outer wall of the box body. The box body is electrically connected with the hot-pressing die, the filament winding frame and the filament bundle adjusting assembly, a filament penetrating hole is formed in the box body, a heat preservation layer is further arranged in the box body, the hot-pressing die comprises an upper hot-pressing die and a lower hot-pressing die, the upper hot-pressing die and the lower hot-pressing die can oppositely move to be completely attached, glue is contained in the glue dipping groove, and fibers penetrate through the filament penetrating hole to enter the box body. And the wire is fixed on the wire winding frame after being impregnated in the impregnation tank. The whole sample manufacturing process is operated through the control system, and the wire winding frame automatically winds and prepares the sample, so that the interference of human factors is reduced, and the uniformity and the stability of the sample are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of performance detection and evaluation of high-performance fiber composite materials, in particular to an automatic sample preparation device for high-performance fibers. Background Art

[0002] High-performance fiber composites mainly include carbon fiber, glass fiber, aramid fiber, alumina fiber, basalt fiber and other composite materials. Because of their excellent properties such as light weight, high strength, high stiffness, high heat resistance and high chemical corrosion resistance, they are widely used in important fields such as aerospace, rail transportation, automobile industry, new energy, health industry and infrastructure construction. They combine military and economic value and are one of the focuses of military development and economic competition among countries.

[0003] With the rapid development of various high-performance fibers and their composite materials industries, higher requirements have been put forward for the detection and evaluation methods of various high-performance fibers and their composite materials. The detection methods of various high-performance fibers and composite materials are gradually moving towards standardization, systematization and automation.

[0004] The interlaminar shear strength of high-performance fibers is an important indicator for measuring the surface treatment effect of high-performance fibers and the interfacial bonding performance of epoxy resins. It can provide a good guide for the downstream applications of high-performance fibers. Although the testing technology currently has industry standards and international standards as the inspection basis, sample preparation mostly relies on manual sampling. The operator's operating habits have a huge impact on the quality of sample preparation. The quality of two samples prepared by the same operator under the same conditions is also uneven, and the sample scrap rate is high during the production process.

[0005] Therefore, how to provide an automatic sample preparation device for fiber interlayer shear test samples to reduce the interference of human factors in manual sample preparation and improve the quality and stability of the samples is a technical problem to be solved by those skilled in the art. Utility Model Content

[0006] In order to solve the problem of poor quality of manually made high-performance fiber interlayer shear test specimens, the utility model provides a high-performance fiber automatic sample making device.

[0007] In order to achieve the purpose of the utility model, a high-performance fiber automatic sampling device is provided, including a box, a hot pressing mold, a wire winding frame, a wire bundle adjustment component, a dipping tank and a control system. The hot pressing mold, the wire winding frame, the wire bundle adjustment component and the dipping tank are arranged inside the box, and the control system is arranged on the outer wall of the box, and is electrically connected to the hot pressing mold, the wire winding frame and the wire bundle adjustment component. A wire threading hole is opened on the box, and an insulation layer is also arranged inside the box. The hot pressing mold includes a hot pressing upper mold and a hot pressing lower mold. The hot pressing upper mold and the hot pressing lower mold can move toward each other until they are fully fitted. There is glue in the dipping tank. The fiber passes through the wire threading hole into the box, is dipped in glue in the dipping tank, and is fixed on the wire winding frame.

[0008] In some of the specific embodiments, a circle counter and a tension sensor are also provided on the wire winding frame.

[0009] In some specific embodiments, the fiber bundle adjustment assembly includes a wire gathering clamp and a fiber bundle clamp. The wire gathering clamp is arranged on both sides of the wire winding frame to narrow the width of the fiber bundle. There are at least two groups of fiber bundle clamps, and each group of fiber bundle clamps is arranged on the same side of the hot pressing upper mold and the hot pressing lower mold, and is used to clamp and fix the fiber bundle when the mold is closed.

[0010] In some specific embodiments, the wire winding frame can be moved toward the hot pressing die to place the fiber bundle into the hot pressing die.

[0011] In some specific embodiments, each set of fiber bundle clamps includes two clamping surfaces and two positioning screws, and the clamping surfaces have roughened surfaces.

[0012] In some specific embodiments, the hot pressing upper mold and the hot pressing lower mold are also provided with a temperature sensor, a pressure sensor and a displacement sensor.

[0013] In some specific embodiments, a creel is further included, which is disposed outside the box and is used to fix the high-performance fiber.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses an automatic sample preparation device for high-performance fiber interlayer shear test specimens. The control system operates the entire sample preparation process, and the wire winding frame automatically winds the sample, which reduces interference from human factors and improves the uniformity and stability of the sample. By arranging a thermal insulation layer on the inner wall of the box, automatic sample preparation in a closed environment is achieved, which can ensure the temperature stability of the sample preparation environment, avoid potential safety hazards during high-temperature transfer of the hot pressing mold, and reduce environmental interference with sample preparation. A glue dipping tank is also provided inside the device, which is convenient for gluing. The fiber bundles can be dipped in glue in advance to avoid uneven glue liquid on the sample due to manual gluing by the operator. Since the sample preparation process is carried out in the box, it can avoid the uncured glue liquid from falling during sample transfer, which makes it difficult to clean up.

[0016] The whole device is exquisitely designed and easy to operate. The interlaminar shear specimens are prepared by this device, which improves the stability of the specimens and the test efficiency, and the test results are reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of some specific embodiments of a high-performance fiber automatic sample preparation device of the utility model;

[0018] Figure 2 The utility model is a three-dimensional structural schematic diagram of a high-performance fiber automatic sample making device.

[0019] In the attached drawings, 10, control system; 20, hot pressing upper mold; 30, wire gathering clamp; 40, box; 50, wire winding frame; 60, glue dipping tank; 70, hot pressing lower mold; 80, fiber bundle clamp; 90, yarn frame. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axis", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "join", "hinge" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Reference Figure 1 and Figure 2 A high-performance fiber automatic sample preparation device includes a box body 40, a hot pressing mold, a wire winding frame 50, a wire bundle adjustment component, a glue dipping tank 60 and a control system 10. The hot pressing mold, the wire winding frame 50, the wire bundle adjustment component and the glue dipping tank 60 are all arranged inside the box body 40, and the control system 10 is arranged on the outer wall of the box body 40, and is electrically connected to the hot pressing mold, the wire winding frame 50 and the wire bundle adjustment component. The box body 40 is also provided with a wire threading hole, and a heat preservation layer is arranged inside the box body 40. The hot pressing mold includes a hot pressing upper mold 20 and a hot pressing lower mold 70, and the hot pressing upper mold 20 and the hot pressing lower mold 70 can move toward each other until they are fully fitted. There is glue in the glue dipping tank 60, and the fiber passes through the wire threading hole into the box body 40, is dipped in glue in the glue dipping tank 60, and is fixed on the wire winding frame 50.

[0026] In this embodiment, the hot pressing upper mold 20 is convex, and the hot pressing lower mold 70 is concave.

[0027] Specifically, the hot pressing upper mold 20 and the hot pressing lower mold 70 are arranged in parallel, and the hot pressing upper mold 20 is used for heating and pressurizing, and can move toward the hot pressing lower mold 70 to be completely fitted; the hot pressing lower mold 70 is used to place the fiber bundle sample and heat it up. The control system 10 can control the hot pressing upper mold 20 to move down and fit with the hot pressing lower mold 70, can control the hot pressing upper mold 20 and the hot pressing lower mold 70 to preheat and heat up, can control the wire winding frame 50 to rotate and wind the wire, and can control the wire bundle adjustment assembly to bundle the width of the fiber bundle, which is consistent with the width of the hot pressing lower mold 70.

[0028] In this embodiment, the operator only needs to set parameters such as the tension value and the number of winding turns of the wire winding frame 50 on the control system 10 to complete the entire process of preparing the high-performance fiber interlayer shear test specimen. The operation is simple and convenient, and the wire winding, glue dipping, mold closing, and curing processes are not interfered by human factors, thereby ensuring the consistency of the specimen and improving the accuracy and reliability of the test results.

[0029] In some of the specific embodiments, the wire winding frame 50 is also provided with a circle counter and a tension sensor.

[0030] Specifically, during the operation of the wire winding rack 50, the circle counter can count the number of wire winding circles, the tension sensor can obtain tension data, and transmit the data to the control system 10 for monitoring by the operator.

[0031] In some specific embodiments, the fiber bundle adjustment assembly includes a wire gathering clamp 30 and a fiber bundle clamp 80. The wire gathering clamp 30 is arranged on both sides of the wire winding frame 50 to gather the width of the fiber bundle. There are at least two groups of fiber bundle clamps 80, and each group of fiber bundle clamps 80 is respectively arranged on the same side of the hot pressing upper mold 20 and the hot pressing lower mold 70, and is used to clamp and fix the fiber bundle when the mold is closed.

[0032] In some specific embodiments, the wire winding frame 50 is capable of moving toward the hot pressing die 70 to place the fiber bundle into the hot pressing die 70 .

[0033] In some specific embodiments, each set of fiber bundle clamps 80 includes two clamping surfaces and two positioning screws, and the clamping surfaces are roughened surfaces.

[0034] Specifically, the control system 10 can control the wire clamp 30 to move downward with the hot pressing upper mold 20, and gather the fiber bundle to a specified width, which is consistent with the hot pressing lower mold 70. In this embodiment, there are two groups of fiber bundle clamps 80, each group of fiber bundle clamps 80 includes two clamping surfaces and two positioning screws, and the two clamping surfaces are respectively arranged on the same side of the hot pressing upper mold 20 and the hot pressing lower mold 70, and the two clamping surfaces can fit each other, and are used to clamp and fix the fiber bundle when the mold is closed.

[0035] In some specific embodiments, the hot pressing upper mold 20 and the hot pressing lower mold 70 are further provided with a temperature sensor, a pressure sensor and a displacement sensor.

[0036] Specifically, the temperature sensor, pressure sensor and displacement sensor can collect the temperature, pressure and displacement information of the hot pressing upper mold 20 and the hot pressing lower mold 70 in real time, and transmit the data to the control system 10. The operator can make different splines while ensuring consistency by adjusting the above parameters.

[0037] In some specific embodiments, a creel 90 is further included. The creel 90 is disposed outside the box 40 and is used to fix the high-performance fiber.

[0038] Specifically, the high-performance fiber is clamped and fixed on the yarn frame 90, and the starting end line of the high-performance fiber is drawn out, passes through the threading hole on the box body 40 to enter the inside of the box body 40, and is fixed on the wire winding frame 50 after being soaked in glue through the glue dipping tank 60. By setting the rotation speed of the wire winding frame 50 through the control system 10, the glue content of the sample can be quantitatively controlled. The rotation speed requirements for preparing different high-performance fiber samples are somewhat different, and the operator can determine it by himself during use. Start the wire winding frame 50, and after the high-performance fiber filaments are tightened, the wire winding frame 50 starts to rotate, and the high-performance fiber filaments rotate around the wire winding frame 50. Under the action of tension, more high-performance fiber filaments pass through the threading hole, pass through the glue dipping tank 60, and finally form a fiber bundle on the wire winding frame 50. When a fixed number of winding turns is reached, the wire winding frame 50 stops rotating. After the wire clamp 30 gathers the fiber bundle into a specific width, the wire winding frame 50 and the wire clamp 30 move downward as a whole, so that the gathered fiber bundle enters the hot pressing lower mold 70, and the fiber clamp 80 clamps the two ends of the fiber bundle to fix it. The wire winding frame 50 and the wire clamp 30 move backward and separate from the fiber bundle, and move upward as a whole to return to the initial position. Finally, the hot pressing upper mold 20 moves downward at a set pressure, fits with the hot pressing lower mold 70, compacts the fiber bundle, and heats up to solidify, forming a shear pattern.

[0039] In this embodiment, the entire sample preparation operation process is carried out inside the box 40, the sample preparation environment is relatively closed, the number of wire windings, wire winding tension, mold temperature and mold pressure are all controllable, and the operator only needs to operate on the control system 10 to complete the control of the entire sample preparation process. By using this device, the influence of human factors on sample preparation can be effectively reduced; the environment is closed and an insulation layer is provided inside the box 40, which can reduce the influence of environmental factors on sample preparation, improve the stability and consistency of the sample, and improve the accuracy and reliability of the test results.

[0040] The following is a detailed description of the process for preparing the high-performance fiber interlayer shear test specimen of this embodiment.

[0041] First, a release agent is evenly coated on the hot pressing upper mold 20 and the hot pressing lower mold 70 , the preheating temperature and preheating time are set, and a proper amount of glue is weighed and prepared, and placed in the glue dipping tank 60 .

[0042] The high-performance fiber to be tested is fixedly hung on the yarn frame 90, and the high-performance fiber passes through the threading hole reserved on the box body 40, passes through the dipping tank 60 and is fixed on the winding frame 50. At this time, the hot pressing upper mold 20 and the hot pressing lower mold 70 are both in a preheated state.

[0043] After inputting the high-performance fiber linear density and bulk density values ​​into the control system 10, the control system 10 calculates the required number of winding turns, which is determined by the number of carbon fiber roots, and the calculation method is: n = 1000*f*b*h / (d / D), where: n is the number of carbon fiber roots; f is the fiber content in the sample; b is the sample thickness, mm; h is the sample width, mm; d is the fiber linear density, g / km; D ​​is the fiber bulk density, g / cm 3 .

[0044] Then the wire winding frame 50 is controlled to wind the wire. After the wire winding frame 50 finishes working, the control system 10 receives the feedback signal of the circle counter and starts to control the wire gathering clamp 30 to gather the fiber bundle after the resin dipping into a specific width, and the width depends on the width of the groove of the hot pressing mold 70.

[0045] The wire winding frame 50 and the wire gathering clamp 30 move downward as a whole under the control of the control system 10, so that the gathered high-performance fiber bundle enters the groove of the hot pressing mold 70. The control system 10 receives the feedback signal of the displacement sensor, controls the fiber bundle clamp 80 to clamp the two ends of the fiber bundle, and the wire winding frame 50 and the wire gathering clamp 30 are retracted to the initial state.

[0046] The hot pressing upper mold 20 moves downward under the control of the control system 10 to compact the impregnated fiber bundle with a set pressure.

[0047] Finally, the control system 10 controls the hot pressing upper mold 20 and the hot pressing lower mold 70 to start heating up to solidify the interlaminar shear specimen.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "a specific embodiment" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention based on the technical solution and the concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-performance fiber automatic sample preparation device, characterized in that: include: Box, hot pressing mold, wire winding rack, wire tow adjustment assembly, glue dipping tank and control system; The hot pressing die, the wire winding frame, the wire bundle adjustment assembly and the glue dipping tank are arranged inside the box; the control system is arranged on the outer wall of the box and is electrically connected to the hot pressing die, the wire winding frame and the wire bundle adjustment assembly; The box body is provided with a thread threading hole, and a heat-insulating layer is also provided inside the box body; The hot pressing mold comprises a hot pressing upper mold and a hot pressing lower mold, and the hot pressing upper mold and the hot pressing lower mold can move toward each other until they are completely fitted; There is glue liquid in the glue dipping tank; The fiber passes through the threading hole and enters the box body, is dipped in glue in the glue dipping tank, and is fixed on the wire winding frame.

2. The high-performance fiber automatic sample preparation device according to claim 1, wherein: The wire winding frame is also provided with a circle counter and a tension sensor.

3. The high-performance fiber automatic sample preparation device according to claim 1, wherein: The fiber bundle adjustment assembly includes a wire gathering clamp and a fiber bundle clamp. The wire gathering clamp is arranged on both sides of the wire winding frame to gather the width of the fiber bundle. The fiber bundle clamp is at least two groups, and each group of the fiber bundle clamps is respectively arranged on the same side of the hot pressing upper mold and the hot pressing lower mold, and is used to clamp and fix the fiber bundle when the mold is closed.

4. The high-performance fiber automatic sample preparation device according to claim 3, wherein: The wire winding frame can move toward the hot pressing mold to place the fiber bundle into the hot pressing mold.

5. The high-performance fiber automatic sample preparation device according to claim 3, wherein: Each group of fiber bundle clamps comprises two clamping surfaces and two positioning screws, and the clamping surfaces are rough-treated surfaces.

6. The high-performance fiber automatic sample preparation device according to claim 1, wherein: The hot pressing upper mold and the hot pressing lower mold are also provided with a temperature sensor, a pressure sensor and a displacement sensor.

7. The high-performance fiber automatic sample preparation device according to claim 1, wherein: It also includes a yarn rack, which is arranged outside the box and is used to fix the high-performance fiber.

Images