A fiber material production apparatus and a woven structure thereof

Abstract

The utility model relates to composite material forming technical field especially, it is a kind of fiber material production equipment and the weaving structure that it has, including forming die, threading board group, oven and feeding structure, the forming die includes the introduction section, polymerization section and forming section that are sequentially arranged along the forming direction, first glue inlet and second glue inlet are provided on the forming die, first glue inlet, second glue inlet are connected with first feeding tank and second feeding tank respectively;Through first glue inlet and second glue inlet are connected independent first feeding tank and second feeding tank respectively;Realized the multi-material stage injection and layer by layer composite: introduction section guides fiber directional arrangement;Polymerization section is injected nylon matrix material by first glue inlet, and on-line polymerization reaction is completed with fiber simultaneously;Forming section is injected outer plastic layer material by second glue inlet, forms multilayer composite structure, solves the single-layer forming restriction of traditional equipment, supports continuous, accurate multilayer composite material preparation.

Description

Technical Field

[0001] This utility model relates to the field of composite material molding technology, and in particular to a fiber material production equipment and its weaving structure. Background Technology

[0002] With the continuous upgrading of industrial demands for lightweighting and high performance, traditional single materials are gradually revealing significant shortcomings in terms of mechanical properties, heat resistance, and dimensional stability. For example, while metal materials possess high strength, their high density and high processing energy consumption make it difficult to meet the urgent lightweighting needs of industries such as automotive and electronics. While ordinary engineering plastics are lightweight and easy to process, their mechanical strength, high-temperature resistance (typically below 150℃), and creep resistance are limited, making it difficult to support the manufacture of high-load or precision components. Against this backdrop, composite materials have become a key direction for overcoming these bottlenecks. However, traditional composite materials often employ physical mixing or simple lamination processes, resulting in problems such as uneven fiber dispersion and weak interfacial bonding, leading to limited performance improvements and complex, costly processes. Taking glass fiber reinforced nylon as an example, in traditional processes, the bonding between fibers and the matrix relies on post-processing bonding or injection molding, which is prone to performance degradation due to interfacial debonding, and it is difficult to achieve precise control of multi-layer composite structures.

[0003] To address these issues, the industry has been exploring innovative processes to achieve efficient bonding between fibers and the matrix in recent years. For example, online polymerization technology allows the fiber reinforcement phase and the matrix material to react simultaneously during the molding process, significantly improving the interfacial bonding strength.

[0004] However, the existing equipment has the following shortcomings:

[0005] First, the mold structure is simple, only supporting single injection or single-layer molding, making it difficult to achieve continuous production of multi-layer composite materials;

[0006] Secondly, insufficient temperature control precision leads to uneven polymerization reactions, affecting the consistency of material properties. Thirdly, inaccurate fiber guidance and tension control easily cause uneven fiber distribution or breakage. In addition, the separation of fiber pretreatment and molding processes in traditional processes can easily introduce environmental interference, further reducing the quality of the finished product.

[0007] Therefore, there is an urgent need for a production equipment with high integration, controllable process parameters, and the ability to efficiently form multi-layer composite structures. Utility Model Content

[0008] The main purpose of this invention is to provide a fiber material production equipment and its weaving structure, which aims to solve the problem that existing production equipment cannot adequately support the continuous and precise preparation of multilayer composite materials.

[0009] To achieve the above objectives, this utility model provides a fiber material production equipment, including a molding die, a threading plate assembly, an oven, and a feeding structure. The molding die includes an inlet section, a polymerization section, and a molding section arranged sequentially along the molding direction. The molding die is provided with a first glue inlet and a second glue inlet, and the first glue inlet and the second glue inlet are respectively connected to a first feeding tank and a second feeding tank.

[0010] Optionally, the threading plate assembly includes a plurality of threading sub-plates.

[0011] Optionally, the oven includes a plurality of heating plates, and the number of heating plates is not less than 3.

[0012] Optionally, a vacuum sleeve is provided between the oven and the threading plate assembly.

[0013] Optionally, the first feeding tank and the second feeding tank are respectively connected to the first reaction tank and the second reaction tank.

[0014] Optionally, the mold includes an inlet section, an aggregation section, and a molding section arranged sequentially along the molding direction.

[0015] Optionally, the first inlet is located on the polymerization section, and the second inlet is located on the molding section.

[0016] Optionally, the feeding structure includes a threading rack or a weaving device, wherein the weaving device is provided with a weaving structure.

[0017] A weaving structure includes a weaving disc, the weaving disc including a plurality of weaving heads rotatably disposed on the weaving disc.

[0018] Optionally, a plurality of the braiding heads are arranged in a circumferential array on the braiding disc, and the rotation directions of adjacent braiding heads are opposite.

[0019] This invention discloses a fiber material production device and its weaving structure. The device sequentially comprises an inlet section, a polymerization section, and a molding section along the molding direction, with a first inlet and a second inlet connecting independent first and second feeding tanks, respectively. This achieves multi-material staged injection and layer-by-layer composite: the inlet section guides the directional arrangement of fibers; the polymerization section injects nylon matrix material through the first inlet, simultaneously completing the online polymerization reaction with the fibers to enhance interfacial bonding; the molding section injects an external plasticizing layer material through the second inlet, forming a multi-layer composite structure. This overcomes the single-layer molding limitations of traditional equipment and supports continuous and precise preparation of multi-layer composite materials. Attached Figure Description

[0020] Figure 1 This is a partial structural schematic diagram of the production equipment of this utility model;

[0021] Figure 2 This is a schematic diagram of the feeding structure of the present invention, which is a wire threading rack;

[0022] Figure 3 This is a schematic diagram of the feeding structure of the present invention as a weaving device;

[0023] Figure 4 This is a top view of the woven structure;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the molding die.

[0025] Figure label:

[0026] 1- Molding mold, 2- Threading plate assembly, 3- Drying oven, 4- Feeding structure, 5- Vacuum sleeve; 11- Inlet section, 12- Polymerization section, 13- Molding section, 14- First glue inlet, 15- Second glue inlet, 16- First feeding tank, 17- Second feeding tank, 18- First reaction tank, 19- Second reaction tank; 21- Threading sub-plate; 41- Threading rack, 42- Weaving equipment; 421- Weaving tray, 422- Weaving head.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Example:

[0033] Please refer to the attached document as well. Figure 1 To be continued Figure 5 In this embodiment, a fiber material production device is provided, including a molding die 1, a threading plate group 2, an oven 3, and a feeding structure 4. The molding die 1 includes an inlet section 11, a polymerization section 12, and a molding section 13 arranged sequentially along the molding direction. The molding die 1 is provided with a first glue inlet 14 and a second glue inlet 15. The first glue inlet 14 and the second glue inlet 15 are respectively connected to a first feeding tank 16 and a second feeding tank 17.

[0034] It should be noted that existing equipment suffers from several drawbacks: the mold structure is too simple, supporting only single injection or single-layer molding, making it difficult to achieve continuous production of multi-layer composite materials; insufficient temperature control precision leads to uneven polymerization reaction, affecting the consistency of material properties; and inaccurate fiber guidance and tension control can easily cause uneven fiber distribution or breakage.

[0035] To address the aforementioned issues, this embodiment provides a fiber material production device. The device consists of an inlet section 11, a polymerization section 12, and a molding section 13 arranged sequentially along the molding direction, connected to independent first and second feeding tanks 16 and 17 via a first inlet 14 and a second inlet 15, respectively. This achieves multi-material staged injection and layer-by-layer composite: the inlet section 11 guides the directional arrangement of fibers; the polymerization section 12 injects nylon matrix material through the first inlet 14, simultaneously completing the online polymerization reaction with the fibers and enhancing interfacial bonding; the molding section 13 injects external plasticizing layer material through the second inlet 15, forming a multi-layer composite structure. This overcomes the single-layer molding limitations of traditional equipment and supports continuous and precise preparation of multi-layer composite materials.

[0036] In some embodiments, the gradient preheating range is 150°C to 250°C.

[0037] In this embodiment, the threading plate assembly 2 includes several threading sub-plates 21. The threading plate assembly 2 is composed of several threading sub-plates 21, which accurately distribute fibers through multi-level guide holes to avoid tangling or uneven tension; the feeding structure 4 is compatible with the threading rack 41 and the weaving equipment 42, and can select direct threading or pre-woven fiber reinforcement according to needs, improving process flexibility; this design solves problems such as uneven fiber distribution and breakage, and ensures the consistency of the mechanical properties of the composite material.

[0038] In this embodiment, the oven 3 includes several heating plates, and the number of heating plates is not less than 3. The oven 3 is equipped with no less than 3 heating plates to achieve gradient preheating of the fiber material, ensuring material drying and optimizing the activity of subsequent polymerization reaction; a vacuum sleeve 5 is set between the oven 3 and the threading plate group 2 to isolate environmental moisture and dust, maintain the dryness and temperature stability of the fiber transport process, and solve the negative impact of environmental factors on fiber performance in traditional processes.

[0039] In this embodiment, a vacuum sleeve 5 is provided between the oven 3 and the threading plate assembly 2.

[0040] Understandably, the vacuum sleeve 5, through its sealed structure, isolates external moisture and dust from entering the transmission channel, solving the problem of fiber moisture absorption caused by exposure to the workshop environment after preheating in the oven 3 in traditional processes. This avoids defects such as reduced polymerization efficiency and weakened interfacial bonding caused by fiber moisture absorption, ensuring the stability of material performance. Secondly, dynamic heat preservation and temperature balance are achieved by using the low thermal conductivity of the vacuum layer to reduce heat loss. Combined with the fiber transmission process after gradient heating in the oven 3, the fiber temperature is maintained within the set range, solving the problems of fiber shrinkage, uneven tension, or breakage caused by sudden temperature drops, ensuring the uniformity of the fiber's physical state.

[0041] In this embodiment, the first feeding tank 16 and the second feeding tank 17 are respectively connected to the first reaction tank 18 and the second reaction tank 19.

[0042] The first feeding tank 16 and the second feeding tank 17 are respectively connected to the independent first reaction tank 18 and the second reaction tank 19 to ensure the independent proportion and stable supply of different materials. By controlling the vacuum dehydration, catalyst addition and temperature parameters of the reaction tank, the efficiency and consistency of the material polymerization reaction are ensured, and the performance defects caused by uneven mixing or fluctuation of reaction conditions in traditional processes are avoided.

[0043] In this embodiment, the mold includes an inlet section 11, a polymerization section 12, and a molding section 13 arranged sequentially along the molding direction. The first inlet 14 is disposed on the polymerization section 12, and the second inlet 15 is disposed on the molding section 13.

[0044] Understandably, the inlet section 11, through the synergistic effect of multi-level guide holes and threading plate group 2, precisely orients and arranges the fiber reinforcement, thus solving the problems of stress concentration and uneven interface bonding caused by the disordered distribution of fibers in traditional molds.

[0045] Specifically, the polymerization section 12 integrates the first glue inlet 14 and the gradient heating plate. By injecting caprolactam raw material online and triggering a catalytic polymerization reaction, a nylon matrix is ​​generated in situ on the fiber surface, realizing the chemical bonding between the fiber and the matrix. The interfacial shear strength is increased to more than 60MPa, overcoming the delamination defects caused by physical bonding in traditional lamination processes. The molding section 13 is equipped with a second glue inlet 15 and an outer plasticizing layer wrapping the cavity. Through secondary injection molding, thermoplastic plasticizing material is uniformly coated on the surface of the composite core layer to form a dense protective layer. This solves the cracking risk caused by the difference in thermal expansion coefficient of multilayer composite materials, improves weather resistance by more than 50%, and at the same time gives the material surface smoothness and corrosion resistance.

[0046] In this embodiment, the feeding structure 4 includes a threading rack 41 or a weaving device 42, and the weaving device 42 is provided with a weaving structure.

[0047] Understandably, the fiber threading rack 41, through multi-level guide holes and modular threading sub-plate 21, directionally arranges the fiber reinforcing filaments, solving the problems of uneven distribution, easy entanglement, or uncontrolled tension caused by the free release of fibers in traditional processes, ensuring that the fiber volume fraction deviation is controlled within ±1.5%, and improving the tensile strength of the material by 35%-50%.

[0048] The weaving equipment 42 achieves three-dimensional weaving of fibers through the weaving disc 421 and the circumferential array of weaving heads 422, giving the fiber reinforcement higher shear resistance and delamination resistance, breaking through the limitations of traditional unidirectional fiber composite materials with significant anisotropy and easy cracking along the fiber direction, and is especially suitable for automotive chassis parts or aerospace structural parts that bear multi-directional loads.

[0049] Example 2:

[0050] A weaving structure includes a weaving disc 421, the weaving disc 421 including a plurality of weaving heads 422 rotatably disposed on the weaving disc 421.

[0051] In this embodiment, a plurality of the braiding heads 422 are arranged in a circumferential array on the braiding disc 421, and the rotation directions of adjacent braiding heads 422 are opposite.

[0052] Understandably, the several braiding heads 422 arranged in a circular array on the braiding disc 421 achieve high-precision three-dimensional interlacing of fiber reinforcing filaments through the torque cancellation effect generated by the reverse rotation. This solves the problems of fiber twisting, uneven tension, and weakened interlayer bonding caused by the unidirectional rotation of traditional unidirectional braiding machines, making it particularly suitable for complex load scenarios. Fiber distribution optimization and interface strengthening: the reverse-rotating braiding heads 422, through periodic cross motion, make the fibers evenly distributed in the radial and circumferential directions of the braiding disc 421, while increasing the contact area and mechanical interlocking effect between the fibers and the matrix material. The interfacial shear strength exceeds 55MPa, which is more than 50% higher than that of the traditional unidirectional layup process, effectively suppressing delamination failure of composite materials caused by interfacial debonding.

[0053] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fiber material production equipment, characterized in that, It includes a molding die, a threading plate assembly, an oven, and a feeding structure. The molding die includes an inlet section, a polymerization section, and a molding section arranged sequentially along the molding direction. The molding die is provided with a first glue inlet and a second glue inlet, and the first glue inlet and the second glue inlet are respectively connected to a first feeding tank and a second feeding tank.

2. The fiber material production equipment as described in claim 1, characterized in that, The threading plate assembly includes several threading sub-plates.

3. The fiber material production equipment as described in claim 1, characterized in that, The oven includes several heating plates, and the number of heating plates is not less than 3.

4. The fiber material production equipment as described in claim 1, characterized in that, A vacuum sleeve is provided between the oven and the threading plate assembly.

5. The fiber material production equipment as described in claim 1, characterized in that, The first feeding tank and the second feeding tank are respectively connected to the first reaction tank and the second reaction tank.

6. The fiber material production equipment as described in claim 1, characterized in that, The mold includes an inlet section, an aggregation section, and a molding section arranged sequentially along the molding direction.

7. The fiber material production equipment as described in claim 6, characterized in that, The first glue inlet is located on the polymerization section, and the second glue inlet is located on the molding section.

8. The fiber material production equipment as described in claim 1, characterized in that, The feeding structure includes a threading rack or a weaving device, and the weaving device is equipped with a weaving structure.

9. A braided structure, characterized in that, According to the fiber material production equipment of claim 8, the weaving structure includes a weaving disc, and the weaving disc includes a plurality of weaving heads rotatably disposed on the weaving disc.

10. A braided structure as described in claim 9, characterized in that, Several of the braiding heads are arranged in a circumferential array on the braiding disc, and the rotation directions of adjacent braiding heads are opposite.

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