WO2017099379A1 - Pièce de retouche à embrochement en z et procédé pour combinaisons de reliure intégrale utilisant celle-ci - Google Patents

Pièce de retouche à embrochement en z et procédé pour combinaisons de reliure intégrale utilisant celle-ci Download PDF

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Publication number
WO2017099379A1
WO2017099379A1 PCT/KR2016/013109 KR2016013109W WO2017099379A1 WO 2017099379 A1 WO2017099379 A1 WO 2017099379A1 KR 2016013109 W KR2016013109 W KR 2016013109W WO 2017099379 A1 WO2017099379 A1 WO 2017099379A1
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WO
WIPO (PCT)
Prior art keywords
pin
pad
exposed
pins
resin
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Application number
PCT/KR2016/013109
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English (en)
Korean (ko)
Inventor
최익현
황인희
Original Assignee
한국항공우주연구원
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Publication of WO2017099379A1 publication Critical patent/WO2017099379A1/fr

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    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking

Definitions

  • a Z-pinning patch made of rubber pads and a method for joining a conjugate using the same. More specifically, between the laminated surface of a composite laminate structure of aerospace and other transport machinery (automotive / high speed train / ship, etc.) that is manufactured by laminating a composite prepreg, or between two or more members, is connected.
  • a Z-pinning patch and method for contacting and connecting members by arranging Z-pins in the thickness direction of the members are disclosed.
  • Fibre-reinforced bonding materials which are widely used in lightweight structures such as aerospace and transport structural members, are mostly manufactured by laminating unidirectional or woven prepregs and applying heat and pressure. Since the laminated laminate structure formed in this way does not have a separate reinforcing material in the thickness direction, an interlayer separation phenomenon in which layers are easily separated from each other due to an external impact or the like occurs. Since this delamination reduces the strength of the structure, methods for preventing this have been studied by researchers in the related field. In other words, many studies have been conducted on methods such as stitching, Z-pinning, textile, toughened matrix, etc. come.
  • the initial concept of the Z-pinning method can be found in US Pat. No. 4,808,461 (February 28, 1989).
  • the core concept of the document is that of a combination for laminating at the time of molding what is called a "reinforced structure" in which a pin is embedded in a polyvinyl foam in the thickness direction, a thin stainless plate is attached to the top, and a release film is attached to the bottom.
  • the upper part is formed and molded, so that the preform collapses due to high temperature and high pressure in the forming process, causing the pin to be embedded into the laminate.
  • the method of pinning the composite laminate structure using the foam structure or the reinforcement structure in this way because the depth of the pin is changed depending on the height when the height of the composite laminate structure is not constant, according to the prior art
  • the fabricated laminated structure having an uneven height has a big problem that the interlayer stiffness is uneven according to the position literature.
  • the conventional method of Z-pinning in a laminate structure having a non-uniform height has a problem in that the configuration of the equipment is complicated and the process is very difficult to apply.
  • An object according to one embodiment is to form a Z-pinning method on an already molded member, which can be applied to a 'co-curing' process, in which two or more unmolded members are molded or bonded at one time to be integrated.
  • Coupling which additionally forms or joins another unmolded member, further joins another molded member to an already molded member, or additionally forms another unmolded member to a member that has not been formed.
  • -bonding 'can also be applied to the process.
  • the Z-pinning method according to one embodiment is difficult to apply the integral molding method of molding or joining two or more members which are not molded at one time for various reasons, and further molding or otherwise molding other members which are not molded to already formed members. Joining, or further joining another molded member to an already molded member, or a 'co-bonding' process to additionally mold another unmolded member to a member that has not been formed. It is to solve problems such as bonding strength, stability, weight, and process changes that occur when manufacturing various bonded laminate structures.
  • the Z-pin is inserted and disposed in the thickness direction of the pad.
  • the pad has a plate shape.
  • a combination of a first member and a second member coupled to each other by using a Z-pinning patch may be configured to expose the Z-pin with a part of the Z-pin exposed on the pad and the remaining part inserted into the pad.
  • the inserted portion is inserted into the first member, and when the pad is separated from the Z pin, the second member is inserted into the remaining portion of the Z pin.
  • the first member or the second member may be provided in a semi-cured state before the Z-pin is inserted, or may be provided only in fiber so that the Z-pin may be impregnated with the resin before or after insertion into the first or second member. have.
  • the Z-pin is inserted into and molded into the first member or the second member by a compression molding tool.
  • the compression molding tool includes a cover covering the outside of the first member or the second member, and an air outlet disposed in the cover to discharge air to the outside of the cover in the inner space of the cover.
  • a method of improving bonding strength of two or more members by using a Z-pinning patch may include providing a Z-pin in which a portion is exposed to an upper portion of a pad and a portion inserted into the pad. -Exposing a portion of the pin to the first member, separating the Z-pin from the pad such that the remaining portion of the Z-pin is exposed over the first member, and the remainder of the Z-pin A portion is inserted into the second member.
  • the hardness of the first member is changed, or the first member is provided as a fiber so that the exposed portion of the Z-pin is inserted into the first member. It may be impregnated with the resin before or after insertion.
  • the hardness of the second member is changed, or the second member is provided as a fiber so that the remaining portion of the Z-pin is inserted into the second member, or It may be impregnated with the resin after insertion.
  • a molding aid structure or a compression molding tool may be appropriately used.
  • the formed assembly can solve the problems described above in the form of a Z-pin disposed between the members.
  • the Z-pinning patch and the method of joining a joint using the same may improve the joining strength of two or more members, improve the stability of the laminate stack, reduce the connection weight, and use existing equipment without special equipment. It can be applied to the fabrication of binder laminate structures that proceed sequentially from inside or outside.
  • the combined body bonding method according to an embodiment unlike the conventional Z-pinning methods that need to change the existing process, a combination of applying the Z-pinning method to the conventional process method, tools and machines without changing the existing process Can be produced.
  • the Z-pinning according to the embodiment is improved in terms of the weight of the member because the elastic body can be used and separated in place of the pad of the conventional Z-pinning.
  • the Z-pinning according to the embodiment is made of an elastic body, it is easy to properly insert the Z-pin according to the shape of the member, and is not damaged by the pressure applied during the step compression molding of the lamination process.
  • the combined body bonding method according to an embodiment has the effect of improving the durability, fatigue strength, static strength, etc. of the existing Z-pinning, durability, fatigue strength, static strength of the binder using a conventional molding tool It is possible to improve the etc. and to prevent the lowering of the compressive strength due to the delamination phenomenon occurring in the conventional binder, can contribute to the effort to prevent the fracture of the structure using the binder.
  • the Z-pinning patch according to an embodiment and a method for joining a joined body using the same, it may also be used in the process of forming a single body, in order to manufacture an integrated joining structure by molding or joining an additional member to an already formed member.
  • FIG. 1 shows a perspective view of a Z-pinning patch consisting of a Z-pin and a pad, according to one embodiment.
  • FIG. 2 illustrates a Z-pin fixing part inserted into a pad of a Z-pinning patch consisting of a Z-pin and a pad according to an embodiment.
  • FIG. 3 illustrates a Z-pinning patch and forming aid structure and compression molding tool consisting of Z-pins and pads placed on a first member, according to one embodiment.
  • FIG. 4 is a moment when a Z-pinning patch composed of Z-pins and pads placed on a first member penetrates the first member, and compresses the first member using a forming aid structure and a compression molding tool, according to one embodiment. The state to be molded is shown.
  • FIG 5 illustrates a state in which a Z-pin is inserted into a first member according to an embodiment.
  • FIG. 6 illustrates a state in which a Z-pinning patch composed of a first member, a Z-pin, and a pad is in contact with each other, and a shaping aid structure for forming a shape of the second member, according to an embodiment.
  • FIG. 7 is a view illustrating the patch Z- in a state in which a forming aid structure for forming a shape of a second member is disposed and a Z-pinning patch composed of a Z-pin and a pad is in contact with the first member. The process of separating the pins and pads is shown.
  • FIG. 8 illustrates a state in which a forming aid structure for forming a shape of a second member is disposed and a Z-pin and a pad are separated to protrude a fixing portion of the Z-pin to the first member, according to an embodiment. .
  • FIG 9 shows a state before the second member is inserted into the Z-pin and the state in which the compression molding tool 4 is disposed, according to one embodiment.
  • FIG. 11 illustrates a first member and a second member joined by a Z-pin according to one embodiment.
  • first, second, A, B, (a), and (b) can be used. These terms are only for distinguishing the configuration tool from other configuration tools, and the nature, order, order, etc. of the configuration tools are not limited by the terms. If a configuration tool is described as being “connected”, “coupled” or “connected” to another configuration tool, that configuration tool may be directly connected or connected to that other configuration tool, but there is another configuration tool between each configuration tool. It is to be understood that the tool may be “connected”, “coupled” or “connected”.
  • the Z-pinning patch 1 may include a pad 11 and a plurality of Z-pins 12.
  • the pad 11 may be provided in a plate shape. Specifically, as shown in FIG. 1, the pad 11 may have a rectangular parallelepiped plate shape and may have a thickness in which the Z-pin 12 may be inserted. In the present embodiment, the pad 11 is described as having a rectangular parallelepiped plate shape, but is not necessarily limited thereto.
  • the pad 11 may be formed in a polygonal plate shape other than a disc, a square plate shape, and the like, and the pad 11 is easy to withstand compression in a compression molding method, and is laminated at the time of lamination including plastic resin and epoxy. It may be made of a material that is easy to separate after the hardness of the members 21 and 22 used (after curing), in particular an elastic body such as rubber.
  • Z-pin 12 includes Z-pin protrusion 121 and Z-pin fixing portion 122.
  • the Z-pin protrusion 121 may be a portion of the Z-pin 12 disposed on the patch 1, which is located above the pad 11, that is, exposed to the outside.
  • the Z-pin fixing part 122 may be a part of the part of the Z-pin 12 disposed on the patch 1, that is, the pad 11 is arranged to arrange and fix the Z-pin 12. .
  • the pad 11 and the Z-pin fixing part 122 may be separated from each other.
  • the Z-pin 12 may be used to be inserted into the binder stack structure, and as shown in FIGS. 1 and 2, the tip may be sharply shaped.
  • the pad 11 and the plastic resin which are made of an elastic body, for a method of improving the bonding strength of the bonded body 2 having two or more members bonded thereto using the Z-pinning patch 1 according to an embodiment.
  • the pad 11 and the plastic resin which are made of an elastic body, for a method of improving the bonding strength of the bonded body 2 having two or more members bonded thereto using the Z-pinning patch 1 according to an embodiment.
  • the assembly 2 comprises a first member 21, a second member 22, and additional members may be provided.
  • the first member 21 may be composed of the first additive 211 and the first structural member 212
  • the second member 22 may be composed of the second additive 221 and the second structural member 222.
  • additional curing agents may be provided.
  • the first member or the second member may be in a hardened or semi-cured state.
  • the first structural member 212 or the second structural member 222 may be made of glass fiber, carbon fiber, or the like
  • the first additive material 211 or the second additive material 221 may be made of resin, epoxy, hardener, or the like.
  • the first structural member 212 or the second structural member 222 may be composed of fibers, and the first additive member 211 or the second additive member 222 may be a resin.
  • the first member 21 may be hardened by resin impregnation after or before the protrusion 121 of the Z-pin is inserted into the first structural member 212.
  • the second member may be hardened by resin impregnation after or before the fixing portion 122 of the Z-pin is inserted into the second structural member 222.
  • a patch 1 having a pad 11 and a Z-pin 12 fixed to the pad 11 is a first member composed of a first structural member 212 or a first additive 211. 21 may be located on.
  • the compression molding tool 4 is composed of a cover and an air outlet, and the cover covers the outside of the first member 21 or the second member 22, and the air outlet is disposed in the cover to exhaust air into the inner space of the cover. You can.
  • FIG. 4 shows the moment when the Z-pinning patch 1 placed on the first member passes through the first member and the first member is compression molded using the forming aid structure and the compression molding tool.
  • a patch 1 composed of a first structural member 212 or a first additive 211 with a Z-pin 12 and a pad 11 disposed on the first member 21 is disposed. 3, the protrusion 121 of the Z-pin of the patch 1 may be introduced into the first member 21.
  • the molding aid structure 3 supports the first member 21 so that when the first member 21 is cured, the first member 21 can be molded into a shape desired by the user.
  • the compression molding tool 4 covers the first member 21 and the patch 1 disposed on the first member 21 by using a cover, and then discharges the air inside the cover by using an air outlet. Pressure is applied to the first member 21 and the patch 1. Due to this pressure, the patch 1 can be drawn into the first member 21.
  • FIG. 5 shows a state in which the Z-pin 12 of the Z-pinning patch is inserted into the first member 21.
  • the Z-pin protrusion 121 of the patch 1 is introduced into the first member 21 using the compression molding tool 4 or through another method, and then the compression molding tool 4. ) Can be removed.
  • FIG. 6 shows a state in which the shaping aid structure 3 for shaping the shape of the second member 22 is disposed.
  • the forming aid structure 3 on the first member 21 in order to fix and shape the shape of the Z-pinning patch 1 and the second member 22 to be disposed on the first member, the forming aid structure 3 on the first member 21. May be arranged.
  • FIG. 7 illustrates a process of separating the Z-pin 12 and the pad 11 of the Z-pinning patch 1 while the Z-pinning patch 1 is in contact.
  • the pad 11 disposed on the Z-pin 12 having the protrusion 121 of the Z-pin inserted into the first member 21 may have a Z-pin fixing portion 122. Can be separated from each other. Specifically, when one end of the pad 11 is gripped and separated from the Z-pin 12, the Z-pin 12 is in the original position by the coupling force with the first member 21, the pad 11 Only can be separated from the Z-pin (12). Since the pad 12 is made of an elastic body such as rubber, the pad 12 may be sequentially separated from the Z-pin 12 disposed at one end to the Z-pin 12 disposed at the other end.
  • a second member 22 is disposed on the first member 1 and the protruding Z-pin fixing portion 122, and optionally, the molding auxiliary structure 3 is used, so that the second member is used.
  • the support 22 can be supported so that the user can be molded into a desired shape.
  • a compression molding tool 4 for compression molding the second member 22 may be further arranged.
  • FIG. 10 shows a state in which the Z-pin 12 is inserted into the second member 22 by the compression molding tool 4.
  • a state in which the user uses the compression molding tool 4 or the other method of retracting the fixed part 122 of the Z-pin into the second member 22 is illustrated.
  • the shaping aids 3 can maintain their shape through the molding aid structure 3, which can be molded into a desired shape by the user, and the selectively arranged compression molding tools 4 can also be provided with the first member 21 and the second member 22.
  • the cover member is covered with a cover, and then the air inside the cover is discharged through the air outlet to apply pressure to the first member 21, the second member 22, and the Z-pin fixing part 122. Due to this pressure, the Z-pin anchor 122 can be drawn into the second member 22.
  • FIG. 11 shows a first member and a second member joined by a Z-pin.
  • the Z-pin may be inserted into the inside of the first member and the inside of the second member to fix and bind the first member and the second member.
  • the method of joining a joint using the Z-pinning patch and the Z-pinning patch according to one embodiment described above improves the joint bond strength, and also improves the stability of the bonded laminate structure, reduces the joint connection weight, and requires no special equipment. It can be applied to the fabrication of the laminate stack structure that proceeds sequentially from the inside or outside using existing equipment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Un mode de réalisation de l'invention concerne une pièce de retouche à embrochement en Z comprenant une plaquette pour améliorer la force de reliure de deux combinaisons ou plus, et une pluralité de broches en Z disposées sur la plaquette. Les broches en Z peuvent être séparées de la plaquette et une partie des broches en Z est exposée sur la plaquette et les parties restantes des broches en Z sont insérées dans la plaquette dans le sens de l'épaisseur. La plaquette peut être constituée de caoutchouc ayant la forme d'une plaque. La plaquette constituée d'un corps élastique et la pièce de retouche comportant les broches en Z permettent, dans une étape de moulage de combinaison, de fixer par insertion les broches en Z de la pièce de retouche à un premier élément et de séparer la plaquette constituée du corps élastique de la partie supérieure des broches en Z, et permettent à une partie de fixation de broche en Z reliée à la pastille faisant saillie depuis le premier élément d'être insérée dans un deuxième élément par la séparation de la plaquette et des broches en Z. Par conséquent, un procédé de reliure intégrale peut ainsi être mis en œuvre.
PCT/KR2016/013109 2015-12-10 2016-11-15 Pièce de retouche à embrochement en z et procédé pour combinaisons de reliure intégrale utilisant celle-ci WO2017099379A1 (fr)

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Application Number Priority Date Filing Date Title
KR10-2015-0175615 2015-12-10
KR1020150175615A KR101794418B1 (ko) 2015-12-10 2015-12-10 Z-피닝 패치 및 이를 이용한 결합체 일체접합 방법

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114727882A (zh) * 2019-09-25 2022-07-08 自由形态纤维有限公司 非织造微格织物及其增强的复合材料或混杂复合材料

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102414563B1 (ko) * 2021-01-20 2022-06-30 주식회사 에스컴텍 Z핀을 포함하는 복합재 구조물 성형방법 및 이를 이용해 제조된 복합재 구조물
KR102654231B1 (ko) * 2023-12-29 2024-04-03 주식회사 에스컴텍 인서트 대상품이 결합된 복합소재 및 그의 제조방법

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4808461A (en) * 1987-12-14 1989-02-28 Foster-Miller, Inc. Composite structure reinforcement
WO1996020073A1 (fr) * 1994-12-23 1996-07-04 Mcdonnell Douglas Corporation Fabrication d'un corps contenant des longueurs de fibres noyees
US5667859A (en) * 1993-04-30 1997-09-16 Foster-Miller, Inc. Reinforced joint for composite structures and method of joining composite parts
US20040023581A1 (en) * 2002-08-05 2004-02-05 Bersuch Larry R. Z-pin closeout joint and method of assembly
US20050025948A1 (en) * 2001-04-06 2005-02-03 Johnson David W. Composite laminate reinforced with curvilinear 3-D fiber and method of making the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808461A (en) * 1987-12-14 1989-02-28 Foster-Miller, Inc. Composite structure reinforcement
US5667859A (en) * 1993-04-30 1997-09-16 Foster-Miller, Inc. Reinforced joint for composite structures and method of joining composite parts
WO1996020073A1 (fr) * 1994-12-23 1996-07-04 Mcdonnell Douglas Corporation Fabrication d'un corps contenant des longueurs de fibres noyees
US20050025948A1 (en) * 2001-04-06 2005-02-03 Johnson David W. Composite laminate reinforced with curvilinear 3-D fiber and method of making the same
US20040023581A1 (en) * 2002-08-05 2004-02-05 Bersuch Larry R. Z-pin closeout joint and method of assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114727882A (zh) * 2019-09-25 2022-07-08 自由形态纤维有限公司 非织造微格织物及其增强的复合材料或混杂复合材料

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KR20170068758A (ko) 2017-06-20

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