JPS6063134A - Insert molding for fiber-reinforced plastic structural body - Google Patents
Insert molding for fiber-reinforced plastic structural bodyInfo
- Publication number
- JPS6063134A JPS6063134A JP58172484A JP17248483A JPS6063134A JP S6063134 A JPS6063134 A JP S6063134A JP 58172484 A JP58172484 A JP 58172484A JP 17248483 A JP17248483 A JP 17248483A JP S6063134 A JPS6063134 A JP S6063134A
- Authority
- JP
- Japan
- Prior art keywords
- insert
- fiber
- sheet
- reinforced plastic
- base material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/545—Perforating, cutting or machining during or after moulding
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0045—Perforating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は繊維強化プラスチツク構造体へ金具およびイン
サート等の突起物を散り付は形成させる繊維強化プラス
チツク構造体へのインサート成形方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for insert molding into a fiber-reinforced plastic structure in which protrusions such as metal fittings and inserts are scattered or formed in the fiber-reinforced plastic structure. .
(従来技術)
繊維強化プラスチ・ンク構造体へ突起物を取り付ける方
法として、構造体の成形後に突起物を接着する方法、あ
るいは構造体の成形と同時に突起物を鋳ぐるむ方法等が
ある。鋳ぐるむ方法に比べ接着による方法では、接着工
程が多くなり、また、平面接着だけでは接合強度が低い
ためできるだけ接着面Mを広くとるような構造が必要と
なる。多くの場合、下孔の測面部が接着面積の増加部と
なり、また脱離方向に対してせん断力で持たせることが
できるようにするため、構造体に突起物の根元側を挿入
する下孔を設ける方法が採られる。この場合では、下孔
の加工が必要となり、また加工時に構造体の繊維を切断
してし才うので、製品全体および接合部の強度低下の一
原因となっている。これに対して、鋳ぐるみ方法の場合
では、流動性ある材料たとえはシートモールディングコ
ンパウンド(BMC)t タハハルクモールディングコ
ンパウンド(BMC)L/か用いることができず、その
ために接合部強度が低く、製品全体としてもシートモー
ルディングコンパウンドまたはt4 tレクモールディ
ングコンパウンドを用いなければならないことにより強
度、剛性に制限があった。(Prior Art) As methods for attaching protrusions to a fiber-reinforced plastic ink structure, there are a method of adhering the protrusions after molding the structure, a method of molding the protrusions simultaneously with the molding of the structure, and the like. Compared to the casting method, the bonding method requires more bonding steps, and bonding strength is low if only plane bonding is used, so a structure is required in which the bonding surface M is as wide as possible. In many cases, the surface measurement part of the pilot hole increases the bonding area, and in order to make it possible to apply shear force in the detachment direction, the pilot hole is inserted into the structure at the base of the protrusion. A method is adopted in which the In this case, it is necessary to prepare a pilot hole, and the fibers of the structure are cut during processing, which is one of the causes of a decrease in the strength of the entire product and the joint. On the other hand, in the case of the casting method, it is not possible to use fluid materials such as sheet molding compound (BMC) and Takhalk molding compound (BMC), which results in low joint strength and poor product quality. Overall, strength and rigidity were limited due to the necessity of using sheet molding compound or T4T rec molding compound.
(発明の目的)
本発明は上記欠点を改善するためのもので、接着工程を
削減し、接合強度の向上を計ることができる繊維強化プ
ラスチツク構造体へのインサート成形方法を提供するも
のである。(Object of the Invention) The present invention is intended to improve the above-mentioned drawbacks, and provides a method for insert molding into a fiber-reinforced plastic structure, which can reduce the number of bonding steps and improve the bonding strength.
(発明の構成)
本発明の特徴は、樹脂硬化以前の連続繊維からなるシー
ト状基材に所定位置の繊維列を曲折させて孔を設ける工
程と、該孔に前記シート状基材と略平行な拡張部を設け
たインサート締結部を挿入する工程と、前記シート状基
材の曲折した繊維列を元の位置の方向へ戻す工程と、樹
脂硬化を行なう工程とからなることである。(Structure of the Invention) The present invention is characterized by a step of forming holes by bending fiber rows at predetermined positions in a sheet-like base material made of continuous fibers before resin hardening, and forming holes in the holes substantially parallel to the sheet-like base material. This method consists of a step of inserting an insert fastening section provided with a widening section, a step of returning the bent fiber rows of the sheet-like base material to the original position, and a step of curing the resin.
(作用)
本発明は上記構成により、補強用繊維の切断を行なうこ
となくインサートを構造体に挿入固定することができ、
繊維強化プラスチツク構造体のインサート根元部分に対
する強度低下を防止し、インサート取付強度を増強する
ことができるようになる。(Function) With the above configuration, the present invention can insert and fix the insert into the structure without cutting the reinforcing fibers,
It becomes possible to prevent a decrease in the strength of the fiber-reinforced plastic structure at the base of the insert, and to increase the insert mounting strength.
(実施例) 以下、本発明の実施例を図により説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
まず、繊維強化プラスチツク構造体として、第1図に示
すように、炭素繊維1の平織りクロスを所定厚まで積層
したシート状基材2を用意し、インサート取付位置に先
端が鋭角でテーパ状をなす棒(図示せず)を差し込み、
繊維列を曲折させてインサート挿入孔5をあける。First, as shown in Fig. 1, as a fiber-reinforced plastic structure, a sheet-like base material 2 made by laminating plain-woven cloth of carbon fibers 1 to a predetermined thickness is prepared, and a tapered tip with an acute angle is prepared at the insert mounting position. Insert the rod (not shown) and
The fiber row is bent to form an insert insertion hole 5.
インサート4は、第2図で示すように、本体5が円筒形
で下部にインサート締結部6を設ける。インサート締結
部6は本体5よりも直径が小さい円筒部7とその円筒部
7の最下部には円筒部7よりも直径の大きな円板状のつ
は8を備え、円筒部7の外周面は軸芯に平行な面を形成
し、本体5の円筒部7に接続する端面9とつば8の円筒
部7に接続する端面10をシート状基材2の表面に略平
行に形成する。円筒部7の高さはシート状基材2の厚さ
と等しくする。As shown in FIG. 2, the insert 4 has a cylindrical main body 5 and an insert fastening portion 6 provided at the bottom thereof. The insert fastening part 6 includes a cylindrical part 7 having a diameter smaller than that of the main body 5, and a disc-shaped ring 8 having a larger diameter than the cylindrical part 7 at the lowest part of the cylindrical part 7. A surface parallel to the axis is formed, and an end surface 9 connected to the cylindrical portion 7 of the main body 5 and an end surface 10 connected to the cylindrical portion 7 of the collar 8 are formed substantially parallel to the surface of the sheet-like base material 2. The height of the cylindrical portion 7 is made equal to the thickness of the sheet-like base material 2.
シート状基材2にあけるインサート挿入孔3は、少なく
とも、インサート4の本体5またはつば8の直径の小さ
い方よりも大きくする。The insert insertion hole 3 formed in the sheet-like base material 2 is made larger than the diameter of the main body 5 or the collar 8 of the insert 4, whichever is smaller.
第3図で示すように、インサート挿入孔3ヘインサート
締結部6を入れ、インサート挿入孔3の最も内側に位置
する炭素繊維1がインサート締結部6の円筒部7に接す
るように、繊維列を繊維方向へ引張ることにより曲折さ
せた繊維列を元の位置の方向へ復帰させる。As shown in FIG. 3, insert the insert fastening part 6 into the insert insertion hole 3, and align the fiber rows so that the carbon fiber 1 located at the innermost side of the insert insertion hole 3 contacts the cylindrical part 7 of the insert fastening part 6. By pulling in the direction of the fibers, the bent fiber rows are returned to their original positions.
シート状基材2ヘインサートを組み付けた後、成形用の
型に収容し、エポキシ樹脂を注入してから、加熱硬化さ
せ、インサート付繊維強化プラスチツク構造体を形成さ
せる。After the sheet-like base material 2 has been assembled with the insert, it is placed in a mold, and an epoxy resin is injected into it and then heated and cured to form a fiber-reinforced plastic structure with an insert.
このような方法の応用例としては、第4図で示すように
、連続繊維11からなる角形筒状体編組12の繊維間に
角柱形状のインサート16を取り付けたものを作ること
ができる。As an example of application of such a method, as shown in FIG. 4, a prismatic cylindrical braid 12 made of continuous fibers 11 with prismatic inserts 16 attached between the fibers can be produced.
このようにして上記実施例では、炭素繊維1あるいは一
般の連続繊維11を途中で切断することなくインサート
4あるいは13を挿入し固定することができ、その後に
プラスチック材料を加熱硬化させるため、インサート単
体の接着工程が省略できる。しかも構造体のインサート
取付部周辺の強化繊維1.11が他の部分よりも密とな
り、インサート取付部の強度を増すことができるように
なる。この方法では繊維強化プラスチツク構造体の全形
状に関係なく、インサート取付部の強化繊維がシート状
を形成しているものであれば適用できる。In this way, in the above embodiment, the insert 4 or 13 can be inserted and fixed without cutting the carbon fiber 1 or the general continuous fiber 11 in the middle, and then the plastic material is heated and hardened, so that the insert alone can be fixed. The adhesion process can be omitted. Moreover, the reinforcing fibers 1.11 around the insert mounting portion of the structure are denser than in other parts, making it possible to increase the strength of the insert mounting portion. This method can be applied regardless of the overall shape of the fiber-reinforced plastic structure as long as the reinforcing fibers in the insert attachment portion form a sheet.
(発明の効果)
以上のように本発明は、シート状基材の所定位置に繊維
列を曲折させて孔をあけ、その孔にインサートの締結部
を挿入した後、曲折させた繊維列を元の位置へ戻すこと
により、補強用繊維を切断することなくインサートを繊
維強化プラスチツク構造体に挿入固定することができる
。(Effects of the Invention) As described above, the present invention bends fiber rows to form holes in predetermined positions of a sheet-like base material, inserts the fastening portion of the insert into the holes, and then inserts the bent fiber rows back into the original position. By returning the reinforcing fibers to this position, the insert can be inserted and fixed into the fiber-reinforced plastic structure without cutting the reinforcing fibers.
このため繊維強化プラスチツク構造体のインサート根元
部分に対する強度低下を防止し、インサート取付強度を
増強することができるようになる。さらに、プラスチッ
クの硬化成形後にインサートを接着する場合と異なり、
硬化前にインサートを組み付けているためプラスチック
め硬化工程が同時にインサートの固定になり、インサー
トの個々の接着工程が省略できる。Therefore, it is possible to prevent a decrease in the strength of the fiber-reinforced plastic structure at the base of the insert, and to increase the strength for attaching the insert. Furthermore, unlike when inserts are glued after the plastic is cured and molded,
Because the inserts are assembled before curing, the plastic curing process simultaneously fixes the inserts, eliminating the need for individual bonding processes for the inserts.
第1図は本発明によるシート状基材に繊維列を曲折させ
て孔を設けた状態を示す斜視説明図、第2図は本発明に
よる円筒形インサートの斜視図、
第3図は第1図の■−■線に沿う断面においてインサー
トを挿入した状態を示す斜視断面説明図、
第4図は本発明による角形筒状体編組へインサートを挿
入した状態を示す斜視部分断面説明図である。
1・・・炭素繊維、2・・・シート状基材、6・・・イ
ンサート挿入孔、4・・・インサート、5・・・インサ
ート本体、6・・・インサート締結部、7・・・円筒部
、8・・・つば、?、1o・・・端面
特許出願人 トヨタ自動車株式会社FIG. 1 is a perspective explanatory view showing a state in which holes are formed by bending fiber rows in a sheet-like base material according to the present invention, FIG. 2 is a perspective view of a cylindrical insert according to the present invention, and FIG. 3 is a diagram similar to that shown in FIG. FIG. 4 is a perspective partial cross-sectional explanatory view showing a state in which an insert is inserted in a cross section taken along the line ■-■ of FIG. 4. FIG. DESCRIPTION OF SYMBOLS 1... Carbon fiber, 2... Sheet-like base material, 6... Insert insertion hole, 4... Insert, 5... Insert main body, 6... Insert fastening part, 7... Cylindrical Part 8...Brim? , 1o... End face patent applicant Toyota Motor Corporation
Claims (1)
に、所定位置の繊維列を曲折させて孔を設ける工程と、
該孔に前記シート状基材と略平行な拡張部を設けたイン
サート締結部を挿入する工程と、前記シート状4基材の
曲折した繊維列を元の位置の方向へ戻す工程と、樹脂硬
化を行なう工程とからなることを特徴とする繊維強化プ
ラスチツク構造体へのインサート成形方法。(1) A step of forming holes by bending fiber rows at predetermined positions in a sheet-like base material made of continuous fibers before resin hardening;
a step of inserting an insert fastening section provided with an expanded portion substantially parallel to the sheet-like base material into the hole; a step of returning the bent fiber rows of the four sheet-like base materials to their original positions; and a step of curing the resin. A method for insert molding into a fiber-reinforced plastic structure, comprising the steps of:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58172484A JPS6063134A (en) | 1983-09-19 | 1983-09-19 | Insert molding for fiber-reinforced plastic structural body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58172484A JPS6063134A (en) | 1983-09-19 | 1983-09-19 | Insert molding for fiber-reinforced plastic structural body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6063134A true JPS6063134A (en) | 1985-04-11 |
Family
ID=15942839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58172484A Pending JPS6063134A (en) | 1983-09-19 | 1983-09-19 | Insert molding for fiber-reinforced plastic structural body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6063134A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013005649A1 (en) * | 2013-04-02 | 2014-10-02 | Audi Ag | Process for producing a fiber composite component having a load introduction element |
US20160031184A1 (en) * | 2014-07-29 | 2016-02-04 | The Boeing Company | Panel-Insert Assembly and Method |
US9803668B2 (en) | 2014-11-17 | 2017-10-31 | The Boeing Company | Panel-insert assembly |
US9925738B2 (en) * | 2012-11-20 | 2018-03-27 | Compagnie Plastic Omnium | Assembly of a metal insert and a sheet of composite material, method for incorporating such an insert into such a sheet and part obtained by molding such a sheet |
-
1983
- 1983-09-19 JP JP58172484A patent/JPS6063134A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9925738B2 (en) * | 2012-11-20 | 2018-03-27 | Compagnie Plastic Omnium | Assembly of a metal insert and a sheet of composite material, method for incorporating such an insert into such a sheet and part obtained by molding such a sheet |
DE102013005649A1 (en) * | 2013-04-02 | 2014-10-02 | Audi Ag | Process for producing a fiber composite component having a load introduction element |
DE102013005649B4 (en) * | 2013-04-02 | 2014-11-13 | Audi Ag | Process for producing a fiber composite component having a load introduction element |
US20160031184A1 (en) * | 2014-07-29 | 2016-02-04 | The Boeing Company | Panel-Insert Assembly and Method |
US9457540B2 (en) * | 2014-07-29 | 2016-10-04 | The Boeing Company | Panel-insert assembly and method |
US9803668B2 (en) | 2014-11-17 | 2017-10-31 | The Boeing Company | Panel-insert assembly |
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