JPS61274921A - Preparation of molding - Google Patents
Preparation of moldingInfo
- Publication number
- JPS61274921A JPS61274921A JP60118572A JP11857285A JPS61274921A JP S61274921 A JPS61274921 A JP S61274921A JP 60118572 A JP60118572 A JP 60118572A JP 11857285 A JP11857285 A JP 11857285A JP S61274921 A JPS61274921 A JP S61274921A
- Authority
- JP
- Japan
- Prior art keywords
- core material
- molding
- molding body
- main body
- space
- 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.)
- Granted
Links
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はモールディングの製造方法に係り、詳しくは内
部に補強材として金属製の芯材を一体的に固定する合成
樹脂製モールディングの製造方法瞬間するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a molding, and more specifically, a method for manufacturing a synthetic resin molding in which a metal core material is integrally fixed inside as a reinforcing material. It is.
従来の技術
一般に、この種のモールディングとしては第９図で示す
如くドアパネルやフェンダ−パネル等に装着するサイド
モールディングｍ１或いはバンパ一本体の表面に装着さ
れるバンパーモールディングｍ２などがある。それはサ
イドモールディングｍｌを例示すると、第１０図で示す
ような外郭形状で端末部にエンドキャップｅを一体成形
したものであり、また内部には第１１図で示す如く背面
側に開放させてリブｒ、ｒ・・・で補強した略断面Ｃ字
状の内部空間Ｓを形成ししかも空間Ｓと相似形に折曲成
形した金属製の芯材りを挿入固定することにより形成さ
れている。2. Description of the Related Art Generally, as shown in FIG. 9, this type of molding includes a side molding m1 attached to a door panel, a fender panel, etc., and a bumper molding m2 attached to the surface of a bumper body. To give an example of a side molding ML, it has an outer shape as shown in Fig. 10, and an end cap e is integrally molded on the end part, and the inside has a rib r open to the back side as shown in Fig. 11. , r... is formed by forming an internal space S having a substantially C-shaped cross section, and by inserting and fixing a metal core material bent and formed into a similar shape to the space S.
従来、この合成樹脂製モールディングを製造するにあた
っては、型内に予め金属板材で折曲成形した芯材を挿置
し、その全面または一部を被覆するよう合成樹脂を金型
内に射出するインジェクション成形が適用されている。Conventionally, when manufacturing this synthetic resin molding, injection method was used, in which a core material made of bent metal plate is placed in the mold, and synthetic resin is injected into the mold to cover the whole or part of the core material. Molding is applied.
発明が解決しようとする問題点
然し、このインジェクション成形では芯材を型内で正確
な位置に保持して置くことが困難であったり、芯材に対
して合成樹脂を射出成形した後に成形体が収縮してモー
ルディング全体にねじれや変形等が生ずることを避は得
ない。Problems to be Solved by the Invention However, with this injection molding, it is difficult to hold the core material in an accurate position within the mold, and the molded product may not be as accurate after injection molding of the synthetic resin onto the core material. It is unavoidable that shrinkage causes twisting, deformation, etc. in the entire molding.
問題点を解決するための手段
本発明に係るモールディングの製造方法においては、モ
ールディング本体の背面側に開放成形する空間の内部に
嵌り合う形状の相似形で芯材側をモールディング本体の
空間よりも僅かに小さな寸法にして、熱可塑性合成樹脂
を長尺で所定横断面形状に加熱成形するモールディング
本体と金属板材を折曲成形する芯材とを別工程で得た後
、モールディング本体が未だ高温状態にあるときに芯材
をモールディング本体の空間内に嵌込んで仮止めし、し
かる後にモールディング本体を自然冷却で収縮させて芯
材を緊締保持するようにされている。Means for Solving the Problems In the method of manufacturing a molding according to the present invention, the core material side is slightly smaller than the space in the molding body with a similar shape that fits inside the space to be molded open on the back side of the molding body. After obtaining the molding body, which is made of a long thermoplastic synthetic resin by heating and molding it into a predetermined cross-sectional shape, and the core material, which is made by bending and molding a metal plate, in separate processes, the molding body is still in a high temperature state. At some point, the core material is fitted into the space of the molding body and temporarily fixed, and then the molding body is naturally cooled to contract and the core material is tightly held.
作 用
このモールディングの製造方法では、モールディング本
体と芯材とを別に成形して芯材をモールディング本体の
空間内に嵌込むようにしても、モールディング本体が高
温状態にあって比較的軟らかで収縮する前であるから芯
材を容易に嵌込むことができるばかりでなく、その収縮
後にはモールディング本体の空間よりやや小さな寸法で
形成した芯材をモールディング本体が緊締するため、芯
材を機械的に強固に固定保持できるようになる。Function: In this molding manufacturing method, even if the molding body and the core material are molded separately and the core material is fitted into the space of the molding body, the molding body is relatively soft and shrinks when it is in a high temperature state. Not only does it allow the core material to be easily inserted, but after shrinking, the molding body tightens the core material, which is formed with dimensions slightly smaller than the space in the molding body, so the core material is mechanically fixed firmly. be able to hold it.
実施例
以下、第１〜８図を参照して説明すれば、次の通りであ
る。An example will be described below with reference to FIGS. 1 to 8.
このモールディングの製造方法は、サイドモールディン
グ、バンパーモールディング、その他各種のモールディ
ングの製造に適用できるものである。This molding manufacturing method can be applied to manufacturing side moldings, bumper moldings, and other various moldings.
まず、第１．２図で示すようにモールディング本体ｌＯ
及び芯材２０を別工程で成形する。モールディング本体
１０は例えば軟質ポリ塩化ビニル等の軟質合成樹脂を用
いて、所定横断面形状の長尺なものにインジェクション
成形で形成することができる。この成形時には背面側に
開放した空間１１を形成し、その内面には複数のリブ１
２，１２・・・を設けるようにする。また、空間１１の
内側で長手方向縁辺に沿って略くの字状の窪み１３とス
リット状の横溝１４とを形成し、これらを係合部として
後述する芯材２０の縁辺を支持するようにする。モール
ディング本体１０の端末にはエンドキャップ１５を−・
体成形し、芯材２０を取付ければ製品としての形態を保
有するまでに形成する。これに対し、芯材２０ｔ４鉄板
、亜鉛メッキ鋼板等の金属ストリップ材をロール成形す
ることにより形成できる。その芯材２０はモールディン
グ本体１０の空間形状と相似形で、やや小さめの寸法に
形成するとよい、その長手方向縁辺には略くの字状の折
曲部２１と略り字状の折曲部２２とを同時成形し、また
モールディング本体１０に一体成形したエンドキャップ
１５の内面に当接する端縁には鋸歯状の突起２３を形成
するとよい。First, as shown in Figure 1.2, the molding body lO
And the core material 20 is molded in a separate process. The molding body 10 can be formed into a long piece with a predetermined cross-sectional shape by injection molding using a soft synthetic resin such as soft polyvinyl chloride. During this molding, an open space 11 is formed on the back side, and a plurality of ribs 1 are formed on the inner surface of the space 11.
2, 12, etc. are provided. Further, a substantially dogleg-shaped depression 13 and a slit-shaped lateral groove 14 are formed along the longitudinal edge inside the space 11, and these are used as engaging portions to support the edge of the core material 20, which will be described later. do. An end cap 15 is attached to the terminal of the molding body 10.
Once the body is formed and the core material 20 is attached, it is formed to the point where it retains the form of a product. On the other hand, the core material can be formed by roll forming a metal strip material such as a 20t4 iron plate or a galvanized steel plate. The core material 20 is preferably formed to have a spatial shape similar to that of the molding body 10 and to have slightly smaller dimensions.The core material 20 has a substantially dogleg-shaped bent portion 21 and an abbreviated-shaped bent portion on its longitudinal edge. It is preferable to form sawtooth protrusions 23 on the end edge that abuts the inner surface of the end cap 15 which is integrally molded with the molding body 10.
これら別工程で得たモールディング本体１０と芯材２０
とは、モールディング本体１０が未だ高温状態にあると
きに空間１１内に芯材２０を嵌込むことにより互いを組
合せるようにする。そのとき、第３図で示す如く芯材２
０は折曲部２２を横溝１４内に挿入した後他側の略く字
状折曲部２１を窪み１３に圧入するようにすれば、モー
ルディング本体１０が高温状態にあって弾力性を有する
から芯材２０の弾性も加わって簡単に嵌入することがで
きる。Molding body 10 and core material 20 obtained through these separate processes
That is, when the molding body 10 is still in a high temperature state, the core material 20 is inserted into the space 11 so that they are assembled together. At that time, as shown in Fig. 3, the core material 2
0 is because the molding main body 10 is in a high temperature state and has elasticity if the bent part 22 is inserted into the horizontal groove 14 and then the substantially doglegged bent part 21 on the other side is press-fitted into the recess 13. Due to the elasticity of the core material 20, it can be easily inserted.
この組合せの後に自然冷却させるよう放置すると、モー
ルディング本体１０が第３図工点鎖線で示すように全体
的に体積を徐々に収縮する。その収縮が進むに伴って、
芯材２０は長手方向の折曲部２１．２２が窪み１３．横
溝１４で保持されると共に橋絡面部分も圧迫されて強固
に緊締されるようになる。また、端縁個所では第４図で
示すように突起２３がモールディング本体ｌＯのエンド
キャップ１５の側面に喰い込み、これらが相俟って、芯
材２０は機械的にモールディング本体１０の空間内に固
定保持されるようになる。When the molding body 10 is left to cool naturally after this combination, the overall volume of the molding body 10 gradually shrinks as shown by the dashed line in Figure 3. As the contraction progresses,
The core material 20 has a longitudinal bent portion 21.22 with a depression 13. While being held by the lateral grooves 14, the bridging surface portion is also compressed and tightly tightened. Further, at the edge portion, as shown in FIG. 4, the protrusion 23 bites into the side surface of the end cap 15 of the molding body 10, and together, the core material 20 is mechanically pushed into the space of the molding body 10. It will be kept fixed.
これら機械的な固定に加えて、相互を接着剤で貼着固定
することもできる。その接着固定にあたっては、第５図
で示す如く予め芯材２０の空間内面との対向面に加熱活
性型の接着剤２４を付着し、これをモールディング本体
１０に嵌込んだ後第６図で示すような金型３０に挿置し
て高周波加熱機４０で加熱処理すれば金属芯材が加熱さ
れて接着剤２４が活性化して互いを更に強固に固定する
ことができる。その高周波加熱では金属製の芯材２０の
みが加熱されるため、モールディング本体１０が熱膨張
したり或いは併せてモールディング本体１０に変形や曲
がり、ねじれ等が生ずることもない。In addition to these mechanical fixings, they can also be fixed to each other by adhesion with an adhesive. For adhesive fixing, a heat-activated adhesive 24 is applied in advance to the surface of the core material 20 facing the inner surface of the space as shown in FIG. 5, and after this is fitted into the molding body 10, as shown in FIG. If they are inserted into a mold 30 like this and heat-treated with a high-frequency heater 40, the metal core material will be heated, the adhesive 24 will be activated, and they can be more firmly fixed to each other. Since only the metal core material 20 is heated by the high-frequency heating, the molding body 10 does not thermally expand, and the molding body 10 does not undergo any deformation, bending, or twisting.
なお、モールディングとしては第１図で示す如き本体形
状のもの以外に第７．８図で示すような芯材２０にステ
ンレス鋼板２５を接着乃至は溶接し、これをモールディ
ング本体ｌＯの外表面に露呈させるようなもの等が多種
あり、それらモールディングの製造にも上述した工程を
適用することができる。In addition to moldings having a main body shape as shown in FIG. 1, stainless steel plates 25 may be bonded or welded to a core material 20 as shown in FIG. 7.8, and this may be exposed on the outer surface of the molding main body IO There are many types of moldings, and the above-mentioned process can be applied to the production of these moldings.
発明の効果
以上の如く、本発明に係るモールディングの製造方法に
依れば、モールディング本体の収縮が完了する前で未だ
高温の軟らかい状態にあるときに芯材を嵌入するため組
合せ作業を簡単に行え、しかも収縮後には芯材を全周か
ら締め付けて確りと固着するから曲がりやねじれ等が発
生せずに品質の良好なモールディングを製造できるよう
になる。Effects of the Invention As described above, according to the method of manufacturing a molding according to the present invention, the assembly work can be easily performed because the core material is inserted while the molding body is still in a high-temperature and soft state before the shrinkage of the molding body is completed. Moreover, after shrinkage, the core material is tightened from all around and firmly fixed, making it possible to manufacture moldings of good quality without bending or twisting.
第１図は本発明に係る方法を適用するモールディング本
体の一部背面図、第２図は同芯材の一部背面図、第３図
は同芯材をモールディング本体に嵌込む工程の説明図、
第４図は同芯材の端縁がモールディング本体と一体成形
したエンドキャップに喰い込んだ状態を示す説明図、第
５図は加熱活性型接着剤を付着した芯材の一部側断面図
、第６図は同芯材を高周波加熱で接着する処理工程を示
す説明図、第７，８図はモールディングの変形例を示す
説明図、第９図は各種モールディングの取付位置を示す
車体の斜視図、第１０．１１図はモールディングの一例
を示す説明図である。
１０：モールディング本体、１１：空間、２０：芯材、
２３：突起、２４：加熱活性型接着剤、４０：高周波加
熱機。
１０ニモールテ１ン：；νＳ体
第５図
第６図
ム０
ｊｆＩ７図
第９図
第１０図
第１１図Figure 1 is a partial rear view of a molding body to which the method according to the present invention is applied, Figure 2 is a partial rear view of a concentric material, and Figure 3 is an explanatory diagram of the process of fitting the concentric material into the molding body. ,
FIG. 4 is an explanatory diagram showing a state in which the edge of the concentric material is bitten into an end cap integrally formed with the molding body, and FIG. 5 is a partial side sectional view of the core material to which heat-activated adhesive is attached. Fig. 6 is an explanatory diagram showing the process of bonding concentric materials by high-frequency heating, Figs. 7 and 8 are explanatory diagrams showing modified examples of moldings, and Fig. 9 is a perspective view of the vehicle body showing the mounting positions of various moldings. , FIG. 10.11 is an explanatory diagram showing an example of molding. 10: molding body, 11: space, 20: core material,
23: Protrusion, 24: Heat activated adhesive, 40: High frequency heating machine. 10 Nimorten 1: ;νS body Fig. 5 Fig. 6 Mu0 jfI7 Fig. 9 Fig. 10 Fig. 11
Claims (3)
の内部に嵌り合う形状の相似形で芯材側を該空間よりも
僅かに小さな寸法にして、熱可塑性合成樹脂を長尺で所
定横断面形状に加熱成形するモールディング本体と金属
板材を折曲成形する芯材とを別工程で得た後、モールデ
ィング本体が未だ高温状態にあるときに芯材をモールデ
ィング本体の空間内に嵌込んで仮止めし、しかる後にモ
ールディング本体を自然冷却で収縮させて芯材を緊締保
持するようにしたことを特徴とするモールディングの製
造方法。(1) A long piece of thermoplastic synthetic resin with a similar shape that fits inside the space to be molded open on the back side of the molding body, with the core side slightly smaller than the space, and a long thermoplastic synthetic resin with a predetermined cross-sectional shape. After obtaining the molding body to be heat-formed and the core material for bending the metal plate material in separate processes, the core material is inserted into the space of the molding body while the molding body is still in a high temperature state and temporarily fixed. A method for manufacturing a molding, characterized in that the molding body is then contracted by natural cooling to tightly hold the core material.
ディング本体の空間内に喰い込ませて固定するようにし
たところの特許請求の範囲第１項記載のモールディング
の製造方法。(2) The method of manufacturing a molding according to claim 1, wherein sawtooth protrusions are formed on the edge of the core material, and the core material is bitten into the space of the molding body and fixed.
ールディング本体の収縮で芯材を緊締保持した後、高周
波加熱で接着剤を活性化して互いを接着固定するように
したところの特許請求の範囲第１項記載のモールディン
グの製造方法。(3) A heat-activated adhesive is attached to the core material in advance, the core material is tightened and held by the contraction of the molding body, and then the adhesive is activated by high-frequency heating to bond and fix each other. A method for manufacturing a molding according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60118572A JPS61274921A (en) | 1985-05-31 | 1985-05-31 | Preparation of molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60118572A JPS61274921A (en) | 1985-05-31 | 1985-05-31 | Preparation of molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61274921A true JPS61274921A (en) | 1986-12-05 |
| JPH04460B2 JPH04460B2 (en) | 1992-01-07 |
Family
ID=14739914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60118572A Granted JPS61274921A (en) | 1985-05-31 | 1985-05-31 | Preparation of molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61274921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022044740A1 (en) * | 2020-08-26 | 2022-03-03 | 昭和電工株式会社 | Method for joining metal and resin, and joined body thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58153614A (en) * | 1982-03-08 | 1983-09-12 | Maruyama Seisakusho:Kk | Monolithic molding method of metal and synthetic resin |
-
1985
- 1985-05-31 JP JP60118572A patent/JPS61274921A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58153614A (en) * | 1982-03-08 | 1983-09-12 | Maruyama Seisakusho:Kk | Monolithic molding method of metal and synthetic resin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022044740A1 (en) * | 2020-08-26 | 2022-03-03 | 昭和電工株式会社 | Method for joining metal and resin, and joined body thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04460B2 (en) | 1992-01-07 |
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