JPH0485014A - Molding method for composite molded product - Google Patents
Molding method for composite molded productInfo
- Publication number
- JPH0485014A JPH0485014A JP20081890A JP20081890A JPH0485014A JP H0485014 A JPH0485014 A JP H0485014A JP 20081890 A JP20081890 A JP 20081890A JP 20081890 A JP20081890 A JP 20081890A JP H0485014 A JPH0485014 A JP H0485014A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding
- molded body
- cavity
- molded
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 25
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000002844 melting Methods 0.000 claims abstract description 25
- 239000007769 metal material Substances 0.000 claims abstract description 24
- 230000008018 melting Effects 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 abstract description 21
- 239000007924 injection Substances 0.000 abstract description 21
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1696—Making multilayered or multicoloured articles injecting metallic layers and plastic material layers
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は樹脂材料と低融点金属材料からなる複合成形品
を成形するための複合成形品の成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for molding a composite molded article made of a resin material and a low melting point metal material.
一般に、金属素材は電気的特性及び機械的特性等に優れ
、プラスチック素材は外観性及び軽量性等に優れている
。このため、近時、双方の特性を兼ね備えた複合材の必
要性も高まっている。例えば、コンピュータ等のデジタ
ル信号を用いる電子機器からは不要な電磁波が漏洩する
ため、外部ケースには本来のケースとしての機能に加え
て電磁波シールド機能が要求される。したがって、この
種の外部ケースはプラスチック製のケース本体の内面略
全面に、導電性塗料の塗布、メツキによる表面処理、金
属箔の貼付等による電磁波シールドを形成した複合部材
として構成していた。In general, metal materials have excellent electrical and mechanical properties, and plastic materials have excellent appearance and light weight. For this reason, there has recently been an increasing need for composite materials that have both properties. For example, unnecessary electromagnetic waves leak from electronic devices such as computers that use digital signals, so the external case is required to have an electromagnetic wave shielding function in addition to its original function as a case. Therefore, this type of external case is constructed as a composite member in which electromagnetic shielding is formed on substantially the entire inner surface of the plastic case body by applying conductive paint, surface treatment by plating, pasting metal foil, etc.
しかし、このような複合部材の製造方法はケース本体を
プラスチックで成形する成形工程と、さらに電磁波シー
ルドを形成する製造工程を要するなど、全く異なる二つ
の製造プロセスを必要とするため、生産性が悪く、製造
上の著しいコスト上昇を招くとともに、電磁波シールド
材の剥離や錆等の経時劣化を生ずる問題があった。However, this method of manufacturing composite components requires two completely different manufacturing processes, one for molding the case body from plastic and the other for forming an electromagnetic shield, resulting in poor productivity. However, in addition to causing a significant increase in manufacturing costs, there was a problem in that the electromagnetic shielding material deteriorated over time, such as peeling and rust.
このため、従来では生産効率及び経済性をより高め得る
製造方法として、溶融状態の低融点金属を熱可塑性樹脂
の流束中に、ダイス内に設けられた溶融金属の注入用ス
リットより連続に注入しながら、熱可塑性樹脂を押出し
成形する製造方法も特公平１−２５７７２号公報で提案
されている。For this reason, conventionally, as a manufacturing method that can further improve production efficiency and economic efficiency, molten low-melting point metal is continuously injected into a flux of thermoplastic resin through a molten metal injection slit provided in a die. However, a manufacturing method of extrusion molding a thermoplastic resin is also proposed in Japanese Patent Publication No. 1-25772.
〔発明が解決しようとする課題〕
しかし、このような従来の製造方法は金属層がプラスチ
ックの内部に形成され、しかも単一的な成形工程で生産
されるため、効率的かつ経済的であり、金属層を剥離等
の経時劣化から保護できる利点はあるものの、成形され
る複合成形品（複合部材）はシート状のため、二次加工
の形状にも限界があるなど、その応用範囲か極めて狭く
、実用性に欠ける難点があった。[Problems to be Solved by the Invention] However, such conventional manufacturing methods are efficient and economical because the metal layer is formed inside the plastic and is produced in a single molding process. Although it has the advantage of protecting the metal layer from deterioration over time such as peeling, the composite molded product (composite member) that is formed is in the form of a sheet, so there are limits to the shape of secondary processing, and the scope of its application is extremely narrow. However, the problem was that it lacked practicality.
本発明はこのような従来の技術に存在する課題を解決し
たもので、成形効率を高め、しかも汎用性を高めること
ができる複合成形品の成形方法の提供を目的とするもの
である。The present invention solves the problems existing in the conventional techniques, and aims to provide a method for molding a composite molded product that can improve molding efficiency and versatility.
本発明に係る複合成形品の成形方法は、第一の形態に係
る金型Ｐ１に、樹脂材料Ｒを充填して第一の成形体Ａ１
を成形し、この後、第一の成形体Ａ１を配したキャビテ
ィＣ２を有する第二の形態に係る金型Ｐ２に、低融点金
属材料Ｍを充填して第二の成形体Ａ２を成形する成形工
程を、成形サイクル中に含むことを特徴とする。この場
合、成形工程では、さらに第二の成形体Ａ２を配したキ
ャビティＣ３を有する第三の形態に係る金型Ｐ３に、樹
脂材料Ｒを充填して第三の成形体Ａ３を成形できる。な
お、任意の形態に係る金型Ｐ２（Ｐ３）は、他の形態に
係る金型ＰＩ（Ｐ２）を構成する固定型５ｌ（Ｓ２）又
は可動型Ｔｌ（Ｔ２）の一方を変更して構成できるし、
任意の形態に係る金型Ｐ１のコアＣｏを移動して構成す
ることもできる。また、任意の形態に係る金型Ｐ２（Ｐ
３）と他の形態に係る金型Ｐｉ（Ｐ２）を別体に構成し
、他の形態に係る金型Ｐｉ（Ｐ２）により成形した成形
体Ａｌ （Ａ２）を任意の形態に係る金型Ｐ２（Ｐ３）
のキャビティに配してインサート成形することもできる
。The method for molding a composite molded article according to the present invention includes filling a mold P1 according to the first embodiment with a resin material R to form a first molded article A1.
After that, a mold P2 according to the second form having a cavity C2 in which the first molded body A1 is arranged is filled with a low melting point metal material M to mold the second molded body A2. The method is characterized in that the step is included during a molding cycle. In this case, in the molding step, the third molded body A3 can be molded by filling the resin material R into a mold P3 according to the third embodiment having a cavity C3 in which the second molded body A2 is arranged. Note that the mold P2 (P3) according to any form can be configured by changing either the fixed mold 5l (S2) or the movable mold Tl (T2) that constitutes the mold PI (P2) according to another form. death,
It is also possible to move the core Co of the mold P1 in any form. In addition, mold P2 (P
3) and a mold Pi (P2) according to another form are constructed separately, and a molded body Al (A2) molded by the mold Pi (P2) according to the other form is formed into a mold P2 according to an arbitrary form. (P3)
It can also be insert molded by placing it in the cavity.
本発明に係る複合成形品の成形方法によれば、まず、第
一の形態に係る金型Ｐ１に樹脂材料Ｒを充填することに
より、第一回目の成形を行い、第一の成形体Ａ１を得る
。According to the method for molding a composite molded product according to the present invention, first, the first molding is performed by filling the mold P1 according to the first embodiment with the resin material R, and the first molded product A1 is formed. obtain.
次に、第一の形態に係る金型２を構成する固定型Ｓｌ又
は可動型ＴＩの一方を変更する等により、第一の成形体
Ａ１を配したキャビティＣ２を有する第二の形態に係る
金型Ｐ２に変更するとともに、第二の形態に係る金型Ｐ
２に低融点金属材料Ｍを充填することにより、第二回目
の成形を行い、樹脂材料Ｒと低融点金属材料Ｍが複合さ
れた第二の成形体Ａ２を得る。Next, by changing one of the fixed mold Sl or the movable mold TI constituting the mold 2 according to the first embodiment, a mold according to the second embodiment having a cavity C2 in which the first molded body A1 is disposed is produced. In addition to changing to mold P2, mold P according to the second form
2 is filled with the low melting point metal material M, a second molding is performed, and a second molded body A2 in which the resin material R and the low melting point metal material M are composited is obtained.
さらに、第二の成形体Ａ２を配したキャビティＣ３を有
する第三の形態に係る金型Ｐ３に、樹脂材料Ｒを充填す
ることにより、第三回目の成形を行えば、サンドイッチ
状の第三の成形体Ａ３（複合成形品）を得る。Furthermore, if a third molding is performed by filling the resin material R into the mold P3 according to the third embodiment having a cavity C3 in which the second molded body A2 is arranged, a third molded body in the form of a sandwich is formed. A molded body A3 (composite molded product) is obtained.
以下には、本発明に係る好適な実施例を挙げ、図面に基
づき詳細に説明する。Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.
まず、第一実施例に係る成形方法について第１図及び第
２図を参照して説明する。First, the molding method according to the first embodiment will be explained with reference to FIGS. 1 and 2.
第一実施例は三つの形態をとり得る金型装置１０を用い
る。第２図において、１１は不図示の型締装置に支持さ
れる可動盤である。可動盤１１における正三角形の頂点
位置には三つの可動型Ｓ１、Ｓ２、Ｓ３を取付ける。な
お、可動盤１１は当該正三角形の中心を回転中心として
、１２０°の角度単位で回転可能である。The first embodiment uses a mold apparatus 10 that can take three forms. In FIG. 2, 11 is a movable platen supported by a mold clamping device (not shown). Three movable molds S1, S2, and S3 are attached to the apex positions of the equilateral triangle on the movable platen 11. Note that the movable platen 11 is rotatable in angular units of 120° with the center of the equilateral triangle as the rotation center.
また、１２は固定盤である。固定盤１２には前記可動型
Ｓ１、Ｓ２、Ｓ３に対向する三つの固定型Ｔｌ５Ｔ２、
Ｔ３を取付ける。Further, 12 is a fixed plate. The fixed platen 12 has three fixed types Tl5T2 facing the movable types S1, S2, and S3,
Install T3.
そして、各可動型Ｓ１、Ｓ２、Ｓ３は共に同一に形成す
るとともに、各固定型ＴＩ、Ｔ２、Ｔ３は異ならせ、型
締時に形成される各キャビティＣＩ、Ｃ２、Ｃ３の容積
を順次大きくする。なお、可動盤１１が回転することに
より、各固定型Ｔ１・・・と各可動型Ｓｌ・・−の組合
わせは順番にローティジョンする。そして、固定型Ｔ１
は各可動型Ｓ１・・・と組合わさることにより第一の形
態に係る金型ＰＩを構成するとともに、同じく、固定型
Ｔ２は第二の形態に係る金型Ｐ２を、同じく、固定型Ｔ
３は第三の形態に係る金型Ｐ３をそれぞれ構成する。The movable molds S1, S2, and S3 are formed to be the same, and the fixed molds TI, T2, and T3 are made to be different, and the volumes of the cavities CI, C2, and C3 formed during mold clamping are sequentially increased. As the movable platen 11 rotates, the combinations of the fixed molds T1, . . . and the movable molds Sl, . . . are sequentially rotated. And fixed type T1
constitutes the mold PI according to the first form by combining with each movable mold S1, and similarly, the fixed mold T2 constitutes the mold P2 according to the second form.
3 respectively constitute a mold P3 according to the third embodiment.
また、各固定型ＴＩ、Ｔ２、Ｔ３に対応して三基の射出
装置Ｘ】、Ｘ２、Ｘ３を備え、射出装置Ｘ１とＸ３は樹
脂材料Ｒを射出し、射出装置Ｘ２は低融点金属材料Ｍを
射出する。なお、樹脂材料Ｒとしては、例えば、熱可塑
性樹脂であるＡＢＳ樹脂、アクリル樹脂、ポリエチレン
樹脂、ポリプロピレン樹脂等の一般材料が適用される。In addition, three injection devices X], X2, and X3 are provided corresponding to each fixed type TI, T2, and T3, and the injection devices X1 and X3 inject the resin material R, and the injection device X2 injects the low melting point metal material M. Inject. Note that, as the resin material R, general materials such as thermoplastic resins such as ABS resin, acrylic resin, polyethylene resin, and polypropylene resin are used.
また、低融点金属材料Ｍとしては通ｔ４００℃以下の融
点を有する単一金属、合金を問わず、例えば、錫、ビス
マス、鉛、カドミウム等の単体、あるいはこれらの合金
が適用される。Furthermore, the low melting point metal material M may be a single metal or an alloy having a melting point of 400° C. or lower, such as tin, bismuth, lead, cadmium, etc., or an alloy thereof.
次に、成形方法について説明する。まず、第１図（ａ）
に示すように、第一の形態に係る金型Ｐ１により第一回
目の射出成形を行う。この場合、ノズルタッチした射出
装置Ｘｌ（第２図）からスプルＣｓを通して金型Ｐｌの
キャビティＣＩに樹脂材料Ｒが射出充填され、第一の成
形体ＡＩが成形される。なお、第１図及び第２図は模式
的に描いであるため、細部の構成は省略されているが、
実際の金型Ｐ１におけるキャビティＣＩとスプルＣｓ間
にはゲート及びランナを含む。Next, the molding method will be explained. First, Figure 1(a)
As shown in the figure, the first injection molding is performed using the mold P1 according to the first embodiment. In this case, the resin material R is injected and filled into the cavity CI of the mold Pl through the sprue Cs from the injection device Xl (FIG. 2) whose nozzle is touched, and the first molded body AI is molded. Note that since Figures 1 and 2 are schematic drawings, detailed configurations are omitted.
A gate and a runner are included between the cavity CI and the sprue Cs in the actual mold P1.
第一回目の成形が終了したなら、可動盤１１を後退させ
、金型Ｐ１を型開するとともに、可動盤１１を１２０°
回転させ、再び型締する。この結果、可動型Ｓｌは次の
固定型Ｔ２と組合わされ、第二の形態に係る金型Ｐ２を
構成する。なお、この場合、可動型Ｓｌ側にはロック部
を有し、第一の成形体ＡＩは可動型Ｓ１に付いた状態と
なり、第一の成形体ＡＩは金型Ｐ２におけるキャビティ
Ｃ２に配される。第１図（ｂ）は第二の形態に係る金型
Ｐ２を示し、容積の拡大したキャビティＣ２が形成され
る。よって、射出装置Ｘ２から溶融した低融点金属材料
Ｍが射出充填され、第二回目の成形を行われることによ
り、第二の成形体Ａ２が成形される。When the first molding is completed, the movable platen 11 is moved back, the mold P1 is opened, and the movable platen 11 is rotated at 120°.
Rotate and clamp the mold again. As a result, the movable mold Sl is combined with the next fixed mold T2 to constitute a mold P2 according to the second embodiment. In this case, the movable mold Sl side has a locking part, the first molded body AI is attached to the movable mold S1, and the first molded body AI is placed in the cavity C2 in the mold P2. . FIG. 1(b) shows a mold P2 according to the second embodiment, in which a cavity C2 with increased volume is formed. Therefore, the molten low melting point metal material M is injected and filled from the injection device X2, and the second molding is performed, thereby forming the second molded body A2.
第二回目の成形が終了したなら、同様に可動盤１１を後
退させ、さらに１２０°回転させた後、再び型締する。When the second molding is completed, the movable platen 11 is similarly moved back, rotated further by 120 degrees, and then the mold is clamped again.
この結果、可動型Ｓ１は次の固定型Ｔ３と組合わされ、
第三の形態に係る金型Ｐ３を構成する。第１図（ｃ）は
第三の形態に係る金型Ｐ３を示し、容積の拡大したキャ
ビティＣ３が形成されるとともに、内部には第二の成形
体Ａ２が配される。よって、射出装置Ｘ３から樹脂材料
Ｒが射出充填され、第三回目の成形が行われる。As a result, the movable mold S1 is combined with the next fixed mold T3,
A mold P3 according to a third embodiment is configured. FIG. 1(c) shows a mold P3 according to a third embodiment, in which a cavity C3 with an enlarged volume is formed, and a second molded body A2 is placed inside. Therefore, the resin material R is injected and filled from the injection device X3, and the third molding is performed.
これにより、樹脂・金属・樹脂の三層からなる第三の成
形体Ａ３、即ち、サンドイッチ状の最終的な複合成形品
を得る。As a result, a third molded body A3 consisting of three layers of resin, metal, and resin, that is, a final sandwich-shaped composite molded product is obtained.
また、このような各成形工程は三つの金型Ｐ１、Ｐ２、
Ｐ３において同時に行われる。なお、第１図（ｂ）にお
いて第二の成形体Ａ２を取出して最終成形品とすること
もでき、この場合、樹脂・金属からなる二層の複合成形
品となる。さらにまた、第一の成形体ＡＩ（第二の成形
体Ａ２）は他の射出成形機で予め成形するとともに、第
二の形態（第三の形態）の金型Ｐ２（Ｐ３）にセットし
、インサート成形してもよい。この場合、樹脂成形品（
複合成形品）をインサートすることになる。In addition, each molding process uses three molds P1, P2,
This is done simultaneously in P3. Note that the second molded body A2 in FIG. 1(b) can also be taken out and used as a final molded product, in which case it becomes a two-layer composite molded product made of resin and metal. Furthermore, the first molded body AI (second molded body A2) is pre-molded with another injection molding machine, and is set in a second form (third form) mold P2 (P3), Insert molding may also be used. In this case, resin molded products (
(composite molded product) will be inserted.
次に、第二実施例について第３図を参照して説明する。Next, a second embodiment will be described with reference to FIG.
第二実施例はいわゆるコアパック成形法を応用したもの
である。The second embodiment is an application of the so-called core pack molding method.
射出装置２１の射出ノズル２２は中心に配した金属射出
ノズル部２３とその回りに配した樹脂射出ノズル部２４
を備えた二重式ノズルを用いる。The injection nozzle 22 of the injection device 21 includes a metal injection nozzle part 23 arranged at the center and a resin injection nozzle part 24 arranged around it.
Use a dual nozzle with
また、可動型Ｔ４には進退するコアｃｏを備える。Moreover, the movable type T4 is equipped with a core co that moves forward and backward.
次に、成形方法について説明する。Next, the molding method will be explained.
まず、可動型Ｔ４のコアｃｏは前進位置にセットする。First, the core co of the movable type T4 is set to the forward position.
これにより、金型は第一の形態に係る金型Ｐ１を構成し
、キャビティＣＩが形成される。Thereby, the mold constitutes a mold P1 according to the first embodiment, and a cavity CI is formed.
そ（２て、第３図（ａ）に示すように、樹脂射出ノズル
部２４から樹脂材料ＲをキャビティＣ１に射出充填し、
第一回目の成形を行う。これにより、第一の成形体ＡＩ
が成形される。(2) As shown in FIG. 3(a), the resin material R is injected and filled into the cavity C1 from the resin injection nozzle part 24,
Perform the first molding. As a result, the first molded body AI
is formed.
次に、第３図（ｂ）で示すように、コアｃｏを所定位置
まで後退させ、容積を拡大したキャビティＣ２を形成す
る。これにより、第二の形態に係る金型Ｐ２が構成され
る。そして、第３図（Ｃ）で示すように、樹脂材料Ｒが
完全に固化しない前に金属射出ノズル部２３から溶融し
た低融点金属材料Ｍを射出充填し、第二回目の成形を行
う。Next, as shown in FIG. 3(b), the core co is retreated to a predetermined position to form a cavity C2 with an expanded volume. Thereby, a mold P2 according to the second embodiment is configured. Then, as shown in FIG. 3(C), before the resin material R is completely solidified, the molten low-melting point metal material M is injected and filled from the metal injection nozzle part 23, and a second molding is performed.
これにより、低融点金属材料Ｍは樹脂材料Ｒの内部に充
填され、第二の成形体Ａ２、即ち、樹脂・金属・樹脂か
らなるサンドイッチ状の複合成形品が成形される。As a result, the low melting point metal material M is filled inside the resin material R, and a second molded body A2, that is, a sandwich-like composite molded product made of resin, metal, and resin is molded.
なお、第３図（ｂ）において、コアｃｏ側に低融点金属
材料Ｍを注入する材料通路２７を設け、コアＣｏを後退
させた後に、材料通路２７からキャビティＣ２の空間に
低融点金属材料Ｍを注入すれば、樹脂・金属からなる二
層の複合成形品を成形できる。In FIG. 3(b), a material passage 27 for injecting the low melting point metal material M is provided on the core co side, and after the core Co is retreated, the low melting point metal material M is injected from the material passage 27 into the space of the cavity C2. By injecting it, a two-layer composite molded product made of resin and metal can be formed.
次に、第三実施例について第４図を参照して説明する。Next, a third embodiment will be described with reference to FIG.
第三実施例は低融点金属材料Ｍの充填方法が異なる。第
−実施例及び第二実施例は低融点金属材料Ｍを充填する
に際して射出装置を利用したが、第三実施例は上方から
注入する方法を用いた。即ち、第１図（ｂ）の場合にお
いて、金型Ｐ２を縦型とし、かつ射出装置Ｘ２（第２図
参照）の代わりに、第４図に示すようなホットランナ３
２を有する金属注入戻し装置３１を設けたものであり、
充填時には上から溶融した低融点金属材料Ｍをキャビテ
ィＣ２に注入するとともに、プランジャ３３を上から下
降させ、低融点金属材料Ｍを押圧する。なお、この際、
余分な低融点金属材料Ｍはホットランナ３２に戻される
。第４図はプランジャ３３を下降させた状態を示してい
る。第三実施例は充填形式が異なるのみで、基本的には
第一実施例に準じて実施可能である。The third embodiment differs in the method of filling the low melting point metal material M. In the first embodiment and the second embodiment, an injection device was used to fill the low melting point metal material M, but in the third embodiment, a method of injecting from above was used. That is, in the case of FIG. 1(b), the mold P2 is a vertical type, and instead of the injection device X2 (see FIG. 2), a hot runner 3 as shown in FIG.
A metal injection return device 31 having 2 is provided,
During filling, the molten low-melting metal material M is injected into the cavity C2 from above, and the plunger 33 is lowered from above to press the low-melting metal material M. In addition, at this time,
The excess low melting point metal material M is returned to the hot runner 32. FIG. 4 shows the state in which the plunger 33 is lowered. The third embodiment can be implemented basically in accordance with the first embodiment, except that the filling format is different.
なお、樹脂材料と低融点金属材料をほぼ同時に射出充填
して成形を実施する方法も考えられるが、一般に、樹脂
材料と低融点金属材料はその物性の相違、例えば粘着性
、流動性等の化学的及び物理的な性質の相違により、現
実にはサンドイッチ状の複合成形品の成形は不可能であ
る。Although it is possible to inject and fill a resin material and a low-melting point metal material almost simultaneously to perform molding, in general, the resin material and the low-melting point metal material have different physical properties, such as chemical properties such as stickiness and fluidity. Due to the difference in physical and physical properties, it is actually impossible to form a composite molded article in the form of a sandwich.
以上、実施例について詳細に説明したが、本発明の基本
思想はこのような実施例に限定されるものではなく、細
部の構成、形状、手法等において、本発明の要旨を逸脱
しない範囲で任意に変更できる。Although the embodiments have been described in detail above, the basic idea of the present invention is not limited to these embodiments, and the detailed structure, shape, method, etc. may be modified as desired without departing from the gist of the present invention. can be changed to
このように、本発明に係る複合成形品の成形方法は、第
一の形態に係る金型に、樹脂材料を充填して第一の成形
体を成形し、この後、第一の成形体を配したキャビティ
を有する第二の形態に係る金型に、低融点金属材料を充
填して第二の成形体を成形する成形工程を、成形サイク
ル中に含むため、次のような顕著な効果を奏する。As described above, the method for molding a composite molded product according to the present invention includes filling the mold according to the first embodiment with a resin material to mold the first molded product, and then molding the first molded product. Since the molding cycle includes a molding process of filling a low melting point metal material into a mold according to the second form having a cavity arranged in the mold and molding the second molded body, the following remarkable effects can be achieved. play.
■ 成形に際して、金型の変更により全て対応できるた
め、製造工程の簡略化により、生産性向上、低コスト化
を達成できる。■ Since all molding can be done by changing the mold, productivity can be improved and costs can be reduced by simplifying the manufacturing process.
■ 基本的に金型を用いた射出成形法により成形するた
め、押圧し成形法等と異なり、各種形状の成形品を容易
に得れるなど、汎用性及び実用性が高い。■ Since it is basically molded by injection molding using a mold, it is highly versatile and practical, as it can easily produce molded products of various shapes, unlike pressure molding methods.
第１図（ａ）、（ｂ）、（ｅ）：本発明の第一実施例に
係る成形方法による成形状態
を順を追って示す金型の模式的縦断面
図、
第２図：第一実施例の成形方法に用いる金型装置の模式
的全体構成図、
第３図（ａ）、（ｂ）、（ｃ）：本発明の第二実施例に
係る成形方法による成形状態
を順を追って示す金型の模式的縦断面
図、
第４図１本発明の第三実施例に係る成形方法を説明する
ための金型及び注入戻し装置
の模式的縦断面図。
尚図面中、
Ａ１：第一の成形体 Ａ２：第二の成形体Ａ３．第三
の成形体
ＣＩ Ｇ２．０３：キャビティ
Ｃｏ：コア Ｍ：低融点金属材料Ｒ：樹脂材
料
Ｐｌ：第一の形態に係る金型
Ｐ２：第二の形態に係る金型
Ｐ３：第三の形態に係る金型
Ｓｔ、Ｓ２．Ｓ３ ：可動型
ＴＩ、Ｔ２．Ｔ３ ：固定型
特許出願人 日精樹脂工業株式会社
代理人弁理士 下 １） 及
第
図FIGS. 1(a), (b), (e): Schematic vertical cross-sectional views of a mold showing sequentially the molding state by the molding method according to the first embodiment of the present invention, FIG. 2: First implementation 3 (a), (b), (c): A schematic overall configuration diagram of a mold apparatus used in the molding method of the example; FIG. FIG. 4 is a schematic vertical sectional view of a mold and an injection return device for explaining a molding method according to a third embodiment of the present invention. In the drawings, A1: first molded body A2: second molded body A3. Third molded body CI G2.03: Cavity Co: Core M: Low melting point metal material R: Resin material Pl: Mold P2 according to first form: Mold P3 according to second form: Third form Molds St, S2. S3: Movable TI, T2. T3: Fixed type patent applicant Nissei Jushi Kogyo Co., Ltd. Representative Patent Attorney 2 1) Figure
Claims (1)
一の成形体を成形し、この後、第一の成形体を配したキ
ャビティを有する第二の形態に係る金型に、低融点金属
材料を充填して第二の成形体を成形する成形工程を、成
形サイクル中に含むことを特徴とする複合成形品の成形
方法。 〔２〕第二の成形体を配したキャビティを有する第三の
形態に係る金型に、樹脂材料を充填して第三の成形体を
成形することを特徴とする請求項１記載の複合成形品の
成形方法。〔３〕任意の形態に係る金型は、他の形態に
係る金型の固定型又は可動型の一方を変更して構成する
ことを特徴とする請求項１又は２記載の複合成形品の成
形方法。 〔４〕任意の形態に係る金型は、他の形態に係る金型の
コアを移動して構成することを特徴とする請求項１又は
２記載の複合成形品の成形方法。 〔５〕任意の形態に係る金型と他の形態に係る金型を別
体に構成し、任意の成形体を他の形態に係る金型のキャ
ビティに配してインサート成形することを特徴とする請
求項１又は２記載の複合成形品の成形方法。[Scope of Claims] [1] A mold according to the first embodiment is filled with a resin material to form a first molded body, and then a second molded body having a cavity in which the first molded body is placed is formed. 1. A method for molding a composite molded article, comprising a molding step of filling a low melting point metal material into a mold according to the form of the above to mold a second molded article during a molding cycle. [2] The composite molding according to claim 1, characterized in that the mold according to the third embodiment having a cavity in which the second molded body is arranged is filled with a resin material to mold the third molded body. How to mold the product. [3] Molding of a composite molded product according to claim 1 or 2, wherein the mold according to any form is configured by changing either a fixed mold or a movable mold of a mold according to another form. Method. [4] The method for molding a composite molded product according to claim 1 or 2, wherein the mold according to an arbitrary form is constructed by moving the core of a mold according to another form. [5] A mold according to an arbitrary form and a mold according to another form are constructed separately, and an arbitrary molded object is placed in a cavity of the mold according to the other form and insert molding is performed. The method for molding a composite molded article according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2200818A JPH0741630B2 (en) | 1990-07-27 | 1990-07-27 | Molding method for composite molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2200818A JPH0741630B2 (en) | 1990-07-27 | 1990-07-27 | Molding method for composite molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0485014A true JPH0485014A (en) | 1992-03-18 |
| JPH0741630B2 JPH0741630B2 (en) | 1995-05-10 |
Family
ID=16430713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2200818A Expired - Fee Related JPH0741630B2 (en) | 1990-07-27 | 1990-07-27 | Molding method for composite molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741630B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043561A (en) * | 2004-08-03 | 2006-02-16 | Tokyo Metro Co Ltd | Dust collector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6163426A (en) * | 1984-08-23 | 1986-04-01 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of molded article of electromagnetic wave shielding material |
| JPS6183013A (en) * | 1984-08-27 | 1986-04-26 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of conductive resin molded product |
-
1990
- 1990-07-27 JP JP2200818A patent/JPH0741630B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6163426A (en) * | 1984-08-23 | 1986-04-01 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of molded article of electromagnetic wave shielding material |
| JPS6183013A (en) * | 1984-08-27 | 1986-04-26 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of conductive resin molded product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043561A (en) * | 2004-08-03 | 2006-02-16 | Tokyo Metro Co Ltd | Dust collector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741630B2 (en) | 1995-05-10 |
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