WO2018014735A1 - Female moulding method for composite material workpiece - Google Patents

Female moulding method for composite material workpiece Download PDF

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Publication number
WO2018014735A1
WO2018014735A1 PCT/CN2017/092017 CN2017092017W WO2018014735A1 WO 2018014735 A1 WO2018014735 A1 WO 2018014735A1 CN 2017092017 W CN2017092017 W CN 2017092017W WO 2018014735 A1 WO2018014735 A1 WO 2018014735A1
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WO
WIPO (PCT)
Prior art keywords
female
composite material
material layer
composite
mold
Prior art date
Application number
PCT/CN2017/092017
Other languages
French (fr)
Chinese (zh)
Inventor
刘若鹏
王旭伟
Original Assignee
深圳光启高等理工研究院
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Publication of WO2018014735A1 publication Critical patent/WO2018014735A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing

Definitions

  • the present invention relates to a female mold forming method for a composite material part.
  • the female die-cutting process generally divides the article into two according to the symmetry line of the article, and then performs gelation and fixing.
  • Such parts have high strength requirements at the seams of the edges, and the parts processed by such a process cannot meet the requirements.
  • an object of the present invention is to provide a female mold forming method for a composite material member which reduces the difficulty of laying a female mold and greatly increases the strength of the workpiece.
  • the present invention provides a female mold forming method for a composite material, characterized in that it comprises the following steps: S10: dividing a female mold having a narrow inner cavity into a plurality of female modules; S20: at each female The composite material layer is interlaced on the module, and the paving area of the composite material layer is larger than the area of the female module; S30: clamping the plurality of female modules, and the protruding portions of the composite material layer from the plurality of female modules overlap each other; S40: The composite layer is cured to form a composite part.
  • the female mold is configured as a cone, and the plurality of female modules are configured to divide at least three female modules of the crucible along the generatrices of the cone.
  • the female mold is configured as a positive cone, and the female mold is evenly divided into a plurality of female modules along the generatrices of the positive cone.
  • the composite material is a prepreg or a resin material.
  • step S30 the portions of the adjacent two female modules on which the composite material layer protrudes overlap each other.
  • the overlapping portion of the composite material layer after lap overlap has a width of 15 mm to 20 mm.
  • step S40 the curing pressure ranges from 1 atmosphere to 5 atmospheres, and the curing temperature ranges from 100 ° C to 200 ° C.
  • step S20 staggering the composite material layer on each female module comprises the following steps: S201: interlacing the composite material layer in each female module to a predetermined number of layers; S202: The female module is vacuumed, vacuumed to pressurize the composite layer; S203: the vacuum bag is removed, and steps S201 to S202 are repeated until the composite layers are completely staggered.
  • the predetermined number of layers is 3-5 layers.
  • the pressure of the pressurization ranges from -100 bar to -95 bar, and the pressurization is continued for 5 min to 10 min.
  • the female mold is divided into a plurality of female modules according to the shape of the composite part.
  • step S40 a core mold is added to the female mold and the core mold is pressed against the composite material layer, and the core mold is pressed against the composite material layer by a pressurizing device, and then the composite is pressed using a hot press tank.
  • the material layer is cured to form a composite part.
  • the core mold is an expanded material
  • the invention solves the requirement that the inner cavity of some composite materials is narrow, and the outer surface is required to be used, and the female mold must be used to form the molded article by the female die-blocking process.
  • the layers of the same composite material are interlaced on each of the female modules, so that the portions of the composite material layer protruding from the plurality of female modules overlap each other, and the thickness of the composite material layer is uniform throughout.
  • the composite layer lap joint method of the present invention can reduce the difficulty of the female mold tiling, and the present invention can ensure the shape of the workpiece, compared to the spliced direct-bond curing solid mold-blocking method. In this case, the mechanical strength of the part is guaranteed.
  • FIG. 1 is a flow chart of a method of forming a female mold of a composite material of the present invention.
  • FIG. 2 is a flow chart of a method of interlacing a composite article of the present invention.
  • FIG. 3 is a schematic illustration of one embodiment of a composite article of the present invention.
  • FIG. 4 is a partial enlarged view of a composite material part of the present invention.
  • a negative molding method of a composite material comprising the following steps: S10: dividing a female mold having a narrow inner cavity into a plurality of female modules; S20: interlacing on each female module Laying the composite material layer, the paving area of the composite material layer is larger than the area of the female module; S30: clamping the plurality of female modules, and the portions of the composite material layer protruding from the plurality of female modules overlap each other; S40: pair of composite materials The layer is cured to form a composite article, wherein, in a preferred embodiment of the invention, the composite is a prepreg or a resin material.
  • the female mold is divided into a plurality of female modules according to the shape of the composite material, and is easy to be processed, and is used for solving the problem that the narrow inner shape of the inner cavity of the workpiece is special, and the human and the machine are difficult to process.
  • the female mold can be divided into several blocks depending on the shape of the workpiece. It can be understood that the female molded parts of the present invention are divided into two or more according to the need of the laying.
  • the composite material having a narrow inner cavity refers to a component having a relatively small inner cavity size compared with other components for a special component such as an aircraft vertical tail and an aircraft leading edge, and which is difficult to process.
  • the female mold is configured as a cone, and the plurality of female modules are configured as at least three female modules that are divided along the busbar of the cone,
  • the female mold is defined as a positive cone, the female mold is configured as a positive cone, and the female mold is evenly divided into a plurality of female modules along the generatrices of the positive cone.
  • a female mold 31, a composite material layer 32, a core mold 33, and a pressurizing device 34 are included.
  • the composite material layer 32 is laid in the female mold 31 by overlapping each other, by using the core mold 33 and adding
  • the pressing device 34 and the composite material layer 32 are pressure-tightened. Wherein, the pressing device 34 is mechanically pressurized
  • the staggered paving comprises the following steps: S201: interlacing the composite material layer in a female module to a predetermined number of layers; S202: performing a vacuum bag on the female module, A vacuum is applied to pressurize the composite layer; S203: the vacuum bag is removed, and steps S201 through S202 are repeated until all of the composite layers are staggered.
  • the predetermined number of layers is 3-5 layers, and the advantage of using the predetermined number of layers is that the laying of the predetermined number of layers of the composite layer can better ensure the compactness of the final composite layer.
  • step S202 a vacuum bag is placed on the female module, and a vacuum pump is used to evacuate, so that the internal pressure of the vacuum bag is less than the external pressure, so that the pressure inside the vacuum bag applies a pressure ranging from -100 bar to -95 bar. Pressurize and pressurize for 5 min to 10 min. Thereafter, the vacuum bag is removed and the interlaced composite layer of step S201 is continued until the composite layer is completely laid.
  • step S30 the plurality of female modules are completed in such a manner that the portions of the composite material layer protruding from the female module overlap each other. Close the mold.
  • FIG. 4 shown is a structure in which the composite layers 41 overlap each other.
  • the composite material layers 41 overlap on the two female modules of the female mold 31.
  • the width of the part is from 15 mm to 20 mm, which ensures that the thickness of each part of the composite material after curing is uniform, and the mechanical strength of the composite part is ensured.
  • the lap joint described above overlaps the composite material layers protruding on the adjacent two female modules.
  • the width of the overlapping portion is determined according to the material and shape of the female module, and the present invention is not limited thereto.
  • step S40 a mandrel is added to the female mold and the core mold is pressed against the composite material layer, and the core mold is pressed against the composite material layer by a pressurizing device, and then the composite material layer is subjected to the autoclave. Curing to form a composite part.
  • a mandrel is added to the female mold and abuts against the composite material layer, and the core mold is pressed against the composite material layer by a pressurizing device, and then heat is used.
  • Pressure tank to composite The layer is cured at a pressure ranging from 1 atmosphere to 5 atmospheres and a heating range of 100 ° C to 200 ° C.
  • the final product can then be tested for static and vibration tests to verify that the final damage value of the part is increased.
  • the core mold is an expanded material
  • the autoclave is heated to expand the expanded material
  • the composite material layer between the core mold and the female mold is subjected to temperature conduction of the expanded material to be solidified.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A female moulding method for a composite material workpiece, comprising the following steps: S10: dividing a female mould (31) having a narrow inner cavity into a plurality of female mould blocks; S20: laying an interlacing composite material layer (32) on each female mould block, the laying area of the composite material layer (32) being greater than the area of the female mould block; S30: assembling the plurality of female mould blocks, the parts of the composite material layer (32) protruding from the plurality of female mould blocks mutually overlapping; and S40: curing the composite material layer (32) to form a composite material workpiece. Using the present moulding method reduces the difficulty of laying a female mould, and greatly improves the strength of the workpiece.

Description

复合材料制件的阴模成型方法  Feather molding method for composite parts
技术领域 Technical field
[0001] 本发明涉及一种复合材料制件的阴模成型方法。  [0001] The present invention relates to a female mold forming method for a composite material part.
背景技术  Background technique
[0002] 复合材料制件为了保证外形光滑平整往往采用阴模成型、 预浸料手工铺贴工艺 。 对于飞机垂尾、 飞机前缘等盒装复合材料制件外表面要求高并且有较高的力 学要求， 因此必须使用阴模铺贴成型的复合材料制件， 但因内腔狭小， 产生了 人工与机器都无法伸入腔内直接铺贴的困扰。 对于以上问题， 通过使用阴模分 块工艺来解决。  [0002] In order to ensure a smooth and flat shape, composite parts are often subjected to a die-forming and prepreg manual paving process. For the outer surface of boxed composite parts such as the vertical tail of the aircraft and the leading edge of the aircraft, the requirements of the outer surface of the boxed composite parts are high and have high mechanical requirements. Therefore, the composite parts made by the negative mold must be used, but the inner cavity is narrow and artificial. Both the machine and the machine can't reach into the cavity and directly lie. For the above problem, it is solved by using the female mode division process.
技术问题  technical problem
[0003] 在现有技术中， 阴模分块工艺通常按照制件的对称线将制件一分为二， 然后进 行胶化固接。 此种制件在边缘的接缝处强度要求较高， 此种工艺加工的制件无 法满足要求。  [0003] In the prior art, the female die-cutting process generally divides the article into two according to the symmetry line of the article, and then performs gelation and fixing. Such parts have high strength requirements at the seams of the edges, and the parts processed by such a process cannot meet the requirements.
[0004] 在现有技术中， 需要一种能够降低阴模铺贴的难度， 并且大幅度提高制件的强 度的阴模加工方法。  [0004] In the prior art, there is a need for a female mold processing method capable of reducing the difficulty of the female mold laying and greatly increasing the strength of the workpiece.
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0005] 针对相关技术中存在的问题， 本发明的目的在于提供一种降低阴模铺贴难度、 大幅提高制件强度的复合材料制件的阴模成型方法。  [0005] In view of the problems in the related art, an object of the present invention is to provide a female mold forming method for a composite material member which reduces the difficulty of laying a female mold and greatly increases the strength of the workpiece.
[0006] 本发明提供了一种复合材料制件的阴模成型方法， 其特征在于， 包括如下步骤 ： S10:将具有窄小内腔的阴模分成多个阴模块； S20:在每个阴模块上交错铺贴 复合材料层， 复合材料层的铺贴区域大于阴模块的面积； S30:对多个阴模块进 行合模， 复合材料层从多个阴模块突出的部分相互搭接； S40: 对复合材料层进 行固化， 以形成复合材料制件。  [0006] The present invention provides a female mold forming method for a composite material, characterized in that it comprises the following steps: S10: dividing a female mold having a narrow inner cavity into a plurality of female modules; S20: at each female The composite material layer is interlaced on the module, and the paving area of the composite material layer is larger than the area of the female module; S30: clamping the plurality of female modules, and the protruding portions of the composite material layer from the plurality of female modules overlap each other; S40: The composite layer is cured to form a composite part.
[0007] 根据本发明， 阴模构造为锥体， 多个阴模块构造为沿着锥体的母线分割幵的至 少三个阴模块。 [0008] 根据本发明， 阴模构造为正圆锥体， 阴模沿着正圆锥体的母线均匀分割成多个 阴模块。 In accordance with the present invention, the female mold is configured as a cone, and the plurality of female modules are configured to divide at least three female modules of the crucible along the generatrices of the cone. According to the invention, the female mold is configured as a positive cone, and the female mold is evenly divided into a plurality of female modules along the generatrices of the positive cone.
[0009] 根据本发明， 复合材料为预浸料或者树脂材料。  According to the invention, the composite material is a prepreg or a resin material.
[0010] 根据本发明， 在步骤 S30中， 相邻的两个阴模块上复合材料层突出的部分相互 交叉重叠。  [0010] According to the present invention, in step S30, the portions of the adjacent two female modules on which the composite material layer protrudes overlap each other.
[0011] 根据本发明， 复合材料层搭接后重叠部分的宽度为 15mm-20mm。  [0011] According to the present invention, the overlapping portion of the composite material layer after lap overlap has a width of 15 mm to 20 mm.
[0012] 根据本发明， 在步骤 S40中， 固化吋加压范围为 1个大气压至 5个大气压， 固化 吋加温范围为 100°C至 200°C。  [0012] According to the present invention, in step S40, the curing pressure ranges from 1 atmosphere to 5 atmospheres, and the curing temperature ranges from 100 ° C to 200 ° C.
[0013] 根据本发明， 在 S20步骤中， 在每个阴模块上交错铺贴复合材料层包括如下步 骤： S201 : 在每个阴模块中交错铺贴复合材料层至预定层数； S202: 对阴模块 打真空袋， 抽真空， 以对复合材料层加压； S203:去除真空袋， 并重复步骤 S201 至步骤 S202， 直至复合材料层全部交错铺贴完成。 [0013] According to the present invention, in step S20, staggering the composite material layer on each female module comprises the following steps: S201: interlacing the composite material layer in each female module to a predetermined number of layers; S202: The female module is vacuumed, vacuumed to pressurize the composite layer; S203: the vacuum bag is removed, and steps S201 to S202 are repeated until the composite layers are completely staggered.
[0014] 根据本发明， 在 S201步骤中， 预定层数为 3-5层。 According to the present invention, in the step S201, the predetermined number of layers is 3-5 layers.
[0015] 根据本发明， 在 S202步骤中， 加压的压力范围为 -lOObar至 -95bar， 并且加压持 续 5min至 10min。  [0015] According to the present invention, in the step S202, the pressure of the pressurization ranges from -100 bar to -95 bar, and the pressurization is continued for 5 min to 10 min.
[0016] 根据本发明， 根据复合材料制件的形状， 将阴模分成多个阴模块。  [0016] According to the invention, the female mold is divided into a plurality of female modules according to the shape of the composite part.
[0017] 根据本发明， 在步骤 S40执行为， 在阴模中加入芯模并将芯模抵靠复合材料层 ， 并通过加压装置将芯模压紧复合材料层， 然后使用热压罐对复合材料层进行 固化， 以形成复合材料制件。 根据本发明， 芯模为膨胀材料 [0017] According to the present invention, in step S40, a core mold is added to the female mold and the core mold is pressed against the composite material layer, and the core mold is pressed against the composite material layer by a pressurizing device, and then the composite is pressed using a hot press tank. The material layer is cured to form a composite part. According to the invention, the core mold is an expanded material
发明的有益效果  Advantageous effects of the invention
有益效果  Beneficial effect
[0018] 本发明的有益技术效果在于： [0018] Advantageous technical effects of the present invention are:
[0019] 本发明通过阴模分块工艺， 解决了某些复合材料制件内腔窄小， 因外表面要求 高而必须使用阴模铺贴成型制件的要求。 同吋复合材料层交错铺贴在每个阴模 块上， 使复合材料层从多个阴模块突出的部分相互搭接， 复合材料层各处的厚 度均匀一致。 此外， 相比于拼接的直接胶接固化的阴模分块方式成型的制件， 使用本发明的复合材料层搭接方式能够降低阴模铺贴的难度， 本发明能够在保 证制件外形的情况下， 保证制件的机械强度。 对附图的简要说明 [0019] The invention solves the requirement that the inner cavity of some composite materials is narrow, and the outer surface is required to be used, and the female mold must be used to form the molded article by the female die-blocking process. The layers of the same composite material are interlaced on each of the female modules, so that the portions of the composite material layer protruding from the plurality of female modules overlap each other, and the thickness of the composite material layer is uniform throughout. In addition, the composite layer lap joint method of the present invention can reduce the difficulty of the female mold tiling, and the present invention can ensure the shape of the workpiece, compared to the spliced direct-bond curing solid mold-blocking method. In this case, the mechanical strength of the part is guaranteed. Brief description of the drawing
附图说明  DRAWINGS
[0020] 图 1是本发明的复合材料制件的阴模成型方法的流程图。  1 is a flow chart of a method of forming a female mold of a composite material of the present invention.
[0021] 图 2是本发明的复合材料制件的交错铺贴方法的流程图。 [0021] FIG. 2 is a flow chart of a method of interlacing a composite article of the present invention.
[0022] 图 3是本发明的复合材料制件的一个实施例的示意图。 [0022] FIG. 3 is a schematic illustration of one embodiment of a composite article of the present invention.
[0023] 图 4是本发明的复合材料制件的局部放大图。 4 is a partial enlarged view of a composite material part of the present invention.
本发明的实施方式 Embodiments of the invention
[0024] 参考附图公幵示出的实施例。 然而， 应当理解， 所公幵的实施例仅为可以以各 种和替代形式显示的实施例。 附图未必按比例绘制， 并且可能放大或缩小一些 特征来显示特定部件的细节。 所公幵的具体结构和功能性细节不应解释为限制 ， 而是作为用于教导本领域技术人员如何实践本公幵的代表性基础。  [0024] Embodiments shown with reference to the drawings are disclosed. However, it is to be understood that the embodiments disclosed are merely examples that may be shown in various and alternative forms. The figures are not necessarily to scale, and some of the The specific structural and functional details disclosed are not to be construed as limiting, but as a representative basis for teaching those skilled in the art how to practice the present disclosure.
[0025] 图 1示出了一种复合材料制件的阴模成型方法， 包括如下步骤： S10:将具有窄 小内腔的阴模分成多个阴模块； S20:在每个阴模块上交错铺贴复合材料层， 复 合材料层的铺贴区域大于阴模块的面积； S30:对多个阴模块进行合模， 复合材 料层从多个阴模块突出的部分相互搭接； S40: 对复合材料层进行固化， 以形成 复合材料制件， 其中， 在本发明的优选实施例中， 复合材料为预浸料或者树脂 材料。 在 S10步骤中， 阴模根据复合材料制件的形状， 加工容易程度分成多个阴 模块， 用于解决制件内腔窄小形状特殊、 人与机器都不易加工的问题。 在现有 技术中通常一分为二， 但是在本发明中， 阴模可以根据制件形状的不同分成若 干块。 可以理解的是， 本发明阴模制件按照铺贴需要， 分为两块以上。 其中， 具有窄小内腔的复合材料制件指的是， 对于飞机垂尾和飞机前缘等特殊部件， 其内腔尺寸相比于其它部件的尺寸相对较小， 加工难度较大的部件。  1 shows a negative molding method of a composite material, comprising the following steps: S10: dividing a female mold having a narrow inner cavity into a plurality of female modules; S20: interlacing on each female module Laying the composite material layer, the paving area of the composite material layer is larger than the area of the female module; S30: clamping the plurality of female modules, and the portions of the composite material layer protruding from the plurality of female modules overlap each other; S40: pair of composite materials The layer is cured to form a composite article, wherein, in a preferred embodiment of the invention, the composite is a prepreg or a resin material. In the step S10, the female mold is divided into a plurality of female modules according to the shape of the composite material, and is easy to be processed, and is used for solving the problem that the narrow inner shape of the inner cavity of the workpiece is special, and the human and the machine are difficult to process. In the prior art, it is generally divided into two, but in the present invention, the female mold can be divided into several blocks depending on the shape of the workpiece. It can be understood that the female molded parts of the present invention are divided into two or more according to the need of the laying. Among them, the composite material having a narrow inner cavity refers to a component having a relatively small inner cavity size compared with other components for a special component such as an aircraft vertical tail and an aircraft leading edge, and which is difficult to process.
[0026] 如图 3所示， 在本发明的一个优选的实施例中， 阴模构造为锥体， 多个阴模块 构造为至少三个沿着锥体的母线分割幵的阴模块， 在更优选的实施例中， 阴模 限定为正圆锥体， 阴模构造为正圆锥体， 阴模沿着正圆锥体的母线均匀分割成 多个阴模块。 在图 3中， 包括阴模 31、 复合材料层 32、 芯模 33以及加压装置 34。 复合材料层 32在阴模 31中采用相互搭接的方式进行铺贴， 通过使用芯模 33和加 压装置 34， 复合材料层 32之间实现了压紧固化。 其中， 加压装置 34为机械加压 [0026] As shown in FIG. 3, in a preferred embodiment of the present invention, the female mold is configured as a cone, and the plurality of female modules are configured as at least three female modules that are divided along the busbar of the cone, In a preferred embodiment, the female mold is defined as a positive cone, the female mold is configured as a positive cone, and the female mold is evenly divided into a plurality of female modules along the generatrices of the positive cone. In FIG. 3, a female mold 31, a composite material layer 32, a core mold 33, and a pressurizing device 34 are included. The composite material layer 32 is laid in the female mold 31 by overlapping each other, by using the core mold 33 and adding The pressing device 34 and the composite material layer 32 are pressure-tightened. Wherein, the pressing device 34 is mechanically pressurized
[0027] 参考图 2， 在图 1中的 S20步骤中， 交错铺贴包括如下步骤： S201 : 在阴模块中 交错铺贴复合材料层至预定层数； S202: 在阴模块上打真空袋， 抽真空， 以对 复合材料层加压； S203:去除真空袋， 并重复步骤 S201至步骤 S202， 直至全部复 合材料层交错铺贴完成。 其中， 在 S201步骤中， 预定层数为 3-5层， 使用该预定 层数的优势在于， 每次铺设该预定层数的复合材料层能够较好的保证最终的复 合材料层的致密性。 上述交错铺贴方法为通过使用激光投影仪， 在阴模上投影 出标识性的点和线， 块儿状的复合材料层以位置交错的方式， 根据投影边界进 行铺贴， 铺贴至 3-5层， 其中， 位置交错铺贴的面积和大小， 根据制件的材料和 厚度， 采用不同的参数， 本发明在此不做限制。 在 S202步骤中， 在阴模块上打 真空袋， 使用真空泵进行抽真空， 以使得上述真空袋的内部压强小于外部压强 ， 使真空袋外部对真空袋内部施加压力范围为 -lOObar至 -95bar的加压， 并且加压 持续 5min至 10min。 此后， 去除真空袋， 继续进行 S201步骤的交错铺贴复合材料 层， 直至复合材料层全部铺贴完成。 [0027] Referring to FIG. 2, in step S20 of FIG. 1, the staggered paving comprises the following steps: S201: interlacing the composite material layer in a female module to a predetermined number of layers; S202: performing a vacuum bag on the female module, A vacuum is applied to pressurize the composite layer; S203: the vacuum bag is removed, and steps S201 through S202 are repeated until all of the composite layers are staggered. Wherein, in the step S201, the predetermined number of layers is 3-5 layers, and the advantage of using the predetermined number of layers is that the laying of the predetermined number of layers of the composite layer can better ensure the compactness of the final composite layer. The above-mentioned staggered laying method is to project the marking points and lines on the female mold by using a laser projector, and the block-shaped composite material layer is laid in a positional staggered manner according to the projection boundary, and is laid out to 3- The fifth layer, wherein the area and the size of the position are staggered, different parameters are adopted according to the material and thickness of the workpiece, and the invention is not limited herein. In step S202, a vacuum bag is placed on the female module, and a vacuum pump is used to evacuate, so that the internal pressure of the vacuum bag is less than the external pressure, so that the pressure inside the vacuum bag applies a pressure ranging from -100 bar to -95 bar. Pressurize and pressurize for 5 min to 10 min. Thereafter, the vacuum bag is removed and the interlaced composite layer of step S201 is continued until the composite layer is completely laid.
[0028] 继续参考图 1， 在完成步骤 S20的所有阴模块的铺贴工作以后， 在步骤 S30中， 以使得复合材料层从阴模块突出的部分相互搭接的方式完成对多个阴模块的合 模。 如图 4所示， 示出的为复合材料层 41之间的相互搭接的结构， 在本发明的优 选实施例中， 在阴模 31的两个阴模块上复合材料层 41搭接后重叠部分的宽度为 1 5mm-20mm， 该宽度范围能够保证固化后的复合材料制件上的每一处厚度均一致 ， 保证复合材料制件的机械强度。 上述的搭接为相邻的两个阴模块上突出的复 合材料层交叉重叠。 重叠部分的宽度是根据阴模块的材料和形状来决定， 本发 明在此亦不做限制。 [0028] With continued reference to FIG. 1, after the lamination work of all the female modules of step S20 is completed, in step S30, the plurality of female modules are completed in such a manner that the portions of the composite material layer protruding from the female module overlap each other. Close the mold. As shown in FIG. 4, shown is a structure in which the composite layers 41 overlap each other. In a preferred embodiment of the present invention, the composite material layers 41 overlap on the two female modules of the female mold 31. The width of the part is from 15 mm to 20 mm, which ensures that the thickness of each part of the composite material after curing is uniform, and the mechanical strength of the composite part is ensured. The lap joint described above overlaps the composite material layers protruding on the adjacent two female modules. The width of the overlapping portion is determined according to the material and shape of the female module, and the present invention is not limited thereto.
[0029] 此外， 在步骤 S40中， 在阴模中加入芯模并将芯模抵靠复合材料层， 并通过加 压装置将芯模压紧复合材料层， 然后使用热压罐对复合材料层进行固化， 以形 成复合材料制件。  [0029] Further, in step S40, a mandrel is added to the female mold and the core mold is pressed against the composite material layer, and the core mold is pressed against the composite material layer by a pressurizing device, and then the composite material layer is subjected to the autoclave. Curing to form a composite part.
[0030] 此外， 在完成合模过程之后， 在所述阴模中加入芯模并抵靠所述复合材料层， 并通过加压装置将所述芯模压紧所述复合材料层， 然后使用热压罐对复合材料 层进行固化， 加压范围为 1个大气压至 5个大气压， 加温范围为 100°C至 200°C。 之 后可以对最终产品使用静力与振动试验进行检测， 检验制件的最终破坏值是否 提高。 其中， 在优选的实施例中， 芯模为膨胀材料， 热压罐加热使得膨胀材料 膨胀， 处于芯模与阴模之间的复合材料层受到膨胀材料的温度传导进而固化成 型。 [0030] Further, after the mold clamping process is completed, a mandrel is added to the female mold and abuts against the composite material layer, and the core mold is pressed against the composite material layer by a pressurizing device, and then heat is used. Pressure tank to composite The layer is cured at a pressure ranging from 1 atmosphere to 5 atmospheres and a heating range of 100 ° C to 200 ° C. The final product can then be tested for static and vibration tests to verify that the final damage value of the part is increased. Wherein, in a preferred embodiment, the core mold is an expanded material, the autoclave is heated to expand the expanded material, and the composite material layer between the core mold and the female mold is subjected to temperature conduction of the expanded material to be solidified.
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的 技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内 ， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。  The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claim
[权利要求 1] 一种复合材料制件的阴模成型方法， 其特征在于， 包括如下步骤：  [Claim 1] A method for forming a female mold of a composite material, comprising the steps of:
S10:将具有窄小内腔的阴模分成多个阴模块；  S10: dividing a female mold having a narrow inner cavity into a plurality of female modules;
S20:在每个所述阴模块上交错铺贴复合材料层， 所述复合材料层的铺 贴区域大于所述阴模块的面积；  S20: interlacing a composite material layer on each of the female modules, the composite material layer has a paving area larger than an area of the female module;
S30:对所述多个阴模块进行合模， 所述复合材料层从所述多个阴模块 突出的部分相互搭接；  S30: clamping the plurality of female modules, and the portions of the composite material layer protruding from the plurality of female modules overlap each other;
S40: 对所述复合材料层进行固化， 以形成所述复合材料制件。  S40: curing the composite layer to form the composite article.
[权利要求 2] 根据权利要求 1所述的阴模成型方法， 其特征在于， 所述阴模构造为 锥体， 所述多个阴模块构造为沿着所述锥体的母线分割幵的至少三个 阴模块。 [Claim 2] The female mold forming method according to claim 1, wherein the female mold is configured as a cone, and the plurality of female modules are configured to divide at least along a bus bar of the cone Three negative modules.
[权利要求 3] 根据权利要求 2所述的阴模成型方法， 其特征在于， 所述阴模构造为 正圆锥体， 所述阴模沿着所述正圆锥体的母线均匀分割成多个阴模块  [Claim 3] The female mold forming method according to claim 2, wherein the female mold is configured as a right cone, and the female mold is evenly divided into a plurality of females along a generatrix of the positive cone Module
[权利要求 4] 根据权利要求 1所述的阴模成型方法， 其特征在于， 所述复合材料为 预浸料或树脂材料。 [Claim 4] The negative mold forming method according to claim 1, wherein the composite material is a prepreg or a resin material.
[权利要求 5] 根据权利要求 1所述的阴模成型方法， 其特征在于， 在步骤 S30中， 相 邻的两个阴模块上所述复合材料层突出的部分相互交叉重叠。  [Claim 5] The negative mold forming method according to claim 1, wherein, in step S30, the portions of the adjacent two female modules on which the composite material layer protrudes overlap each other.
[权利要求 6] 根据权利要求 5所述的阴模成型方法， 其特征在于， 所述复合材料层 搭接后重叠部分的宽度为 15mm-20mm。 [Claim 6] The negative mold forming method according to claim 5, wherein the overlapping portion of the composite material layer has a width of 15 mm to 20 mm.
[权利要求 7] 根据权利要求 1所述的阴模成型方法， 其特征在于， 在步骤 S40中， 固 化吋加压范围为 1个大气压至 5个大气压， 固化吋加温范围为 100°C至 2[Claim 7] The negative molding method according to claim 1, wherein in step S40, the curing pressure ranges from 1 atm to 5 atm, and the curing enthalpy ranges from 100 ° C to 2
00。C。 00. C.
[权利要求 8] 根据权利要求 1所述的阴模成型方法， 其特征在于， 在 S20步骤中， 在 每个所述阴模块上交错铺贴复合材料层包括如下步骤：  [Claim 8] The negative mold forming method according to claim 1, wherein, in the step S20, the interlacing the composite material layer on each of the female modules comprises the following steps:
S201 : 在每个所述阴模块中交错铺贴所述复合材料层至预定层数； S202: 对所述阴模块打真空袋， 抽真空， 以对所述复合材料层加压； S203:去除所述真空袋， 并重复步骤 S201至步骤 S202， 直至所述复合 材料层全部交错铺贴完成。 S201: interlacing the composite material layer into a predetermined number of layers in each of the female modules; S202: vacuuming the female module, vacuuming to pressurize the composite material layer; S203: removing The vacuum bag, and repeating steps S201 to S202 until the composite The material layers are all staggered and finished.
[权利要求 9] 根据权利要求 8所述的阴模成型方法， 其特征在于， 在 S201步骤中， 所述预定层数为 3-5层。  [Claim 9] The negative mold forming method according to claim 8, wherein in the step S201, the predetermined number of layers is 3-5 layers.
[权利要求 10] 根据权利要求 8所述的阴模成型方法， 其特征在于， 在 S202步骤中， 所述加压的压力范围为 - lOObar至 -95bar， 并且所述加压持续 5min至 10 min° [Claim 10] The female molding method according to claim 8, wherein in the step S202, the pressurizing pressure ranges from -100 bar to -95 bar, and the pressurization is continued for 5 min to 10 min. °
[权利要求 11] 根据权利要求 1所述的阴模成型方法， 其特征在于， 根据所述复合材 料制件的形状， 将所述阴模分成多个所述阴模块。  [Claim 11] The female mold forming method according to claim 1, wherein the female mold is divided into a plurality of the female modules according to the shape of the composite material member.
[权利要求 12] 根据权利要求 1所述的阴模成型方法， 其特征在于， 步骤 S40执行为， 在所述阴模中加入芯模并将芯模抵靠所述复合材料层， 并通过加压装 置将所述芯模压紧所述复合材料层， 然后使用热压罐对所述复合材料 层进行固化， 以形成所述复合材料制件。  [Claim 12] The female molding method according to claim 1, wherein the step S40 is performed by adding a core mold to the female mold and abutting the core mold against the composite material layer, and adding A press device presses the mandrel against the composite layer and then cures the composite layer using an autoclave to form the composite article.
[权利要求 13] 根据权利要求 12所述的阴模成型方法， 其特征在于， 所述芯模为膨胀 材料。  [Claim 13] The negative mold forming method according to claim 12, wherein the core mold is an expanded material.
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