JP3531269B2 - Method and apparatus for manufacturing resin molded article having core material - Google Patents
Method and apparatus for manufacturing resin molded article having core materialInfo
- Publication number
- JP3531269B2 JP3531269B2 JP8016095A JP8016095A JP3531269B2 JP 3531269 B2 JP3531269 B2 JP 3531269B2 JP 8016095 A JP8016095 A JP 8016095A JP 8016095 A JP8016095 A JP 8016095A JP 3531269 B2 JP3531269 B2 JP 3531269B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- mold
- core material
- cavity
- core
- 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.)
- Expired - Fee Related
Links
- 239000011347 resin Substances 0.000 title claims description 273
- 229920005989 resin Polymers 0.000 title claims description 273
- 239000011162 core material Substances 0.000 title claims description 259
- 238000004519 manufacturing process Methods 0.000 title claims description 34
- 238000000034 method Methods 0.000 title claims description 18
- 238000002347 injection Methods 0.000 claims description 33
- 239000007924 injection Substances 0.000 claims description 33
- 238000001746 injection moulding Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 208000015943 Coeliac disease Diseases 0.000 description 44
- 239000012530 fluid Substances 0.000 description 12
- 238000000465 moulding Methods 0.000 description 11
- 239000012790 adhesive layer Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 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
- B29C45/1671—Making multilayered or multicoloured articles with an insert
-
- 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
- B29C45/1603—Multi-way nozzles specially adapted therefor
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は芯材を埋設した樹脂成形
品を射出成形により製造する方法および装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a resin molded product in which a core material is embedded by injection molding.
【０００２】[0002]
【従来の技術】自動車のボデーサイドモールディングの
ような装飾部品として、成形品の形状を保持するための
芯材を樹脂中に埋設した樹脂成形品が用いられている。
このような樹脂成形品には、芯材として金属板のような
板状部材を用い、この芯材を板状の成形品の内部の所定
の位置に配置し、外に露出しないように完全に埋設した
ものがある。2. Description of the Related Art As a decorative component such as an automobile body side molding, a resin molded product in which a core material for retaining the shape of the molded product is embedded in a resin is used.
For such a resin molded product, a plate-shaped member such as a metal plate is used as a core material, and the core material is placed at a predetermined position inside the plate-shaped molded product, and is completely exposed so as not to be exposed to the outside. Some are buried.
【０００３】このような樹脂成形品を射出成形で製造す
るためには、芯材を成形型内で保持するために、特別の
考慮が必要になる。例えば芯材を射出成形型で挟んだ状
態で射出成形を行うと、芯材が成形体から露出するの
で、後でこの露出した余剰部分を切除しなければならな
い。芯材を完全に埋設するためには、芯材として成形型
のキャビティより小さいものをインサートし、これをキ
ャビティ内の所定の位置に浮いた状態に保持して樹脂を
射出するが、キャビティ内での樹脂の流動や樹脂の射出
圧によりキャビティ内で芯材が移動して所定の位置から
ずれたり、芯材が変形してしまうという不具合がある。In order to manufacture such a resin molded product by injection molding, special consideration is required in order to hold the core material in the molding die. For example, when injection molding is performed with the core material sandwiched between injection molding dies, the core material is exposed from the molded body, and therefore the exposed surplus portion must be cut out later. To completely embed the core material, insert a core material that is smaller than the cavity of the mold, hold it in a predetermined position inside the cavity and inject the resin, but in the cavity There is a problem that the core material moves in the cavity due to the resin flow or the resin injection pressure and is displaced from a predetermined position, or the core material is deformed.
【０００４】一方、芯材の一部を成形型に挟んで保持す
る場合において、スライド型によりキャビティ内の芯材
を保持した状態で樹脂を射出し、樹脂がキャビティにほ
ぼ充填された時点でスライド型を後退させ、さらに樹脂
を射出して成形を行う方法が提案されている（特開平４
−１６３１６号）。しかしこの方法は芯材の一部を型で
挟んで保持する場合には適しているが、芯材を型面から
隔離した状態で保持する場合には、スライド型後退後の
樹脂の流動により芯材が移動する場合があり、芯材を所
定位置に埋込むことが困難である。On the other hand, in the case of holding a part of the core material by sandwiching it between the molding dies, the resin is injected while the core material in the cavity is held by the slide die, and the resin is slid when the cavity is almost filled with the resin. A method has been proposed in which the mold is retracted, and further the resin is injected to perform molding (Japanese Patent Laid-Open No. H04-264242).
-16316). However, this method is suitable for holding a part of the core material by sandwiching it between the molds, but when holding the core material in a state of being separated from the mold surface, the core is caused by the resin flow after the slide mold retreats. Since the material may move, it is difficult to embed the core material at a predetermined position.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、上記
の問題点を解決するため、簡単な装置と操作により、芯
材を成形体の所定位置に配置するように埋設した樹脂成
形品を製造する方法および装置を提案することである。SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a resin molded product in which a core material is embedded so as to be placed at a predetermined position of a molded product by a simple device and operation. It is to propose a method and an apparatus for manufacturing.
【０００６】[0006]
【課題を解決するための手段】本発明は次の樹脂成形品
の製造方法および装置である。
（１）成形品の外表面側に対応する型面を有するキャビ
ティ型と、このキャビティ型との分割面を有するコア
型、およびこのコア型内でキャビティ型側に前進後退可
能に設けられたスライドコア型との間に形成されるキャ
ビティ内に、スライドコア型が前進した位置で先端部
に、外形寸法がキャビティより小さい芯材を保持して前
記型が閉じられた状態で、スライドコア型の前進位置で
形成される第１の部分キャビティに第１の樹脂流路から
第１のゲートを通して第１の樹脂を射出して、成形品の
外表面部を含む第１の樹脂部を形成して芯材と一体化
し、芯材が第１の樹脂部に固着した段階でスライドコア
型を後退させて、スライドコア型と芯材との間に第２の
部分キャビティを形成し、第２の部分キャビティに第２
の樹脂流路から第２のゲートを通して第２の樹脂を射出
して、成形品の裏面部を含む第２の樹脂部を形成し、第
１の樹脂部および芯材と一体化させることにより芯材を
埋込むことを特徴とする芯材を有する樹脂成形品の製造
方法。
（２）成形品の外表面側に対応する型面を有するキャビ
ティ型と、このキャビティ型との分割面を有するコア
型、およびこのコア型内でキャビティ型側に前進後退可
能に設けられたスライドコア型との間に形成されるキャ
ビティ内に、スライドコア型が前進した位置で先端部
に、外形寸法がキャビティより小さい芯材を保持して前
記型が閉じられた状態で、スライドコア型の前進位置で
形成される第１の部分キャビティに第１の樹脂流路から
第１のゲートを通して第１の樹脂を射出して、成形品の
外表面部を含む第１の樹脂部を形成して芯材と一体化
し、芯材が第１の樹脂部に固着した段階でスライドコア
型を後退させて、スライドコアと芯材との間に第２の部
分キャビティを形成しつつ、第２の部分キャビティに第
２の樹脂流路から第２のゲートを通して第２の樹脂を射
出して、成形品の裏面部を含む第２の樹脂部を形成し、
第１の樹脂部および芯材と一体化させることにより芯材
を埋込むことを特徴とする芯材を有する樹脂成形品の製
造方法。
（３）第１の樹脂と第２の樹脂は同一の樹脂である上記
（１）または（２）記載の方法。
（４）第１の樹脂と第２の樹脂は異なる樹脂である上記
（１）または（２）記載の方法。
（５）第２の樹脂が再生材である上記（４）記載の方
法。
（６）第２の樹脂を第２の部分キャビティに射出する際
芯材をキャビティ型方向に押付ける方向に射出する上記
（１）ないし（５）のいずれかに記載の方法。
（７）成形品の外表面側に対応する型面を有するキャビ
ティ型と、このキャビティ型との分割面を有するコア型
と、このコア型内でキャビティ型側に対して前進後退可
能に設けられたスライドコア型と、前記キャビティ型、
コア型およびスライドコア型によって形成されるキャビ
ティよりも外形寸法の小さい芯材を保持するように、ス
ライドコア型の先端部に設けられた芯材保持部と、スラ
イドコア型の前進位置で形成される第１の部分キャビテ
ィに第１の樹脂を射出する第１の樹脂流路およびゲート
と、第１の樹脂流路およびゲートとは異なる位置に設け
られ、スライドコア型の後退位置で形成される第２の部
分キャビティに第２の樹脂を射出する第２の樹脂流路お
よびゲートと、を有することを特徴とする芯材を有する
樹脂成形品の製造装置。
（８）芯材保持部が芯材を吸着する磁石を含む上記
（７）記載の装置。
（９）芯材保持部が芯材を吸着する真空吸着具を含む上
記（７）記載の装置。
（１０）芯材保持部は保持される芯材の外周縁部に沿っ
てキャビティ型側に向けて突出する突部を含む上記
（７）ないし（９）のいずれかに記載の装置。
（１１）第１の樹脂流路と第２の樹脂流路との間にこれ
らの樹脂流路と択一的に連通する樹脂流路の切替弁が設
けられ、この切換弁が射出成形機側の１つの樹脂供給路
に接続している上記（７）ないし（１０）のいずれかに
記載の装置。
（１２）第１の樹脂流路と第２の樹脂流路が共に独立し
ていて、それぞれが独立した射出成形機側の別の樹脂供
給路と接続されている上記（７）ないし（１０）のいず
れかに記載の装置。The present invention provides the following method and apparatus for producing a resin molded product. (1) A cavity mold having a mold surface corresponding to the outer surface side of a molded product, a core mold having a dividing surface with the cavity mold, and a slide provided in the core mold so as to be able to move forward and backward toward the cavity mold side. In the cavity formed between the core die and the slide core die, at the position where the slide core die is advanced, the tip of the slide core die holds a core material having an outer dimension smaller than the cavity, and the die is closed. From the first resin flow path to the first partial cavity formed in the advanced position
At the stage where the first resin is injected through the first gate to form the first resin portion including the outer surface portion of the molded product and integrated with the core material, and the core material is fixed to the first resin portion. The slide core mold is retracted to form a second partial cavity between the slide core mold and the core material, and a second partial cavity is formed in the second partial cavity .
By injecting the second resin from the resin flow path through the second gate to form the second resin portion including the back surface portion of the molded product, and integrating with the first resin portion and the core material. A method for producing a resin molded product having a core material, wherein the material is embedded. (2) A cavity mold having a mold surface corresponding to the outer surface side of the molded product, a core mold having a dividing surface with the cavity mold, and a slide provided in the core mold so as to be able to move forward and backward toward the cavity mold side. In the cavity formed between the core die and the slide core die, at the position where the slide core die is advanced, the tip of the slide core die holds a core material having an outer dimension smaller than the cavity, and the die is closed. From the first resin flow path to the first partial cavity formed in the advanced position
At the stage where the first resin is injected through the first gate to form the first resin portion including the outer surface portion of the molded product and integrated with the core material, and the core material is fixed to the first resin portion. The slide core mold is retracted to form the second partial cavity between the slide core and the core material, and the second partial cavity is formed in the second partial cavity .
A second resin is injected from the second resin flow path through the second gate to form a second resin portion including the back surface of the molded product,
A method for manufacturing a resin molded product having a core material, wherein the core material is embedded by being integrated with the first resin portion and the core material. (3) The method according to (1) or (2) above, wherein the first resin and the second resin are the same resin. (4) The method according to (1) or (2) above, wherein the first resin and the second resin are different resins. (5) The method according to (4) above, wherein the second resin is a recycled material. (6) The method according to any one of (1) to (5) above, wherein when the second resin is injected into the second partial cavity, the core material is injected in the direction of pressing the cavity mold direction. (7) A cavity mold having a mold surface corresponding to the outer surface side of the molded product, a core mold having a dividing surface for the cavity mold, and a core mold provided in the core mold so as to be able to move forward and backward with respect to the cavity mold side Slide core type, the cavity type,
A core material holding portion provided at the tip of the slide core mold so as to hold a core material having an outer dimension smaller than the cavity formed by the core mold and the slide core mold, and the slide core mold are formed at the forward position. The first resin flow path and the gate for injecting the first resin into the first partial cavity are provided at positions different from the first resin flow path and the gate, and are formed at the slide core type retracted position. An apparatus for manufacturing a resin molded product having a core material, comprising: a second resin flow path for injecting a second resin into the second partial cavity; and a gate. (8) The device according to (7), wherein the core material holding portion includes a magnet that attracts the core material. (9) The device according to (7) above, wherein the core material holding unit includes a vacuum suction tool that suctions the core material. (10) The apparatus according to any one of (7) to (9) above, wherein the core material holding portion includes a protrusion protruding toward the cavity mold side along the outer peripheral edge portion of the held core material. (11) A switching valve for the resin flow path, which selectively communicates with the resin flow path, is provided between the first resin flow path and the second resin flow path, and the switching valve is on the injection molding machine side. The apparatus according to any one of (7) to (10), which is connected to one of the resin supply passages. (12) The first resin flow path and the second resin flow path are both independent, and each is connected to another independent resin supply path on the injection molding machine side (7) to (10). The device according to any one of 1.
【０００７】本発明において製造の対象となる樹脂成形
品は、芯材を成形品中に埋込んだ成形品であり、その形
状は任意であるが、装飾面となる外表面側と、取付部と
なる裏面側を有するもの、特に板状または板状に近い形
状のものが適している。このような樹脂成形品としては
自動車の装飾部材が例示できるが、他の成形品でもよ
い。The resin molded product to be manufactured in the present invention is a molded product in which a core material is embedded in the molded product, and its shape is arbitrary, but the outer surface side to be a decorative surface and the mounting portion. Those having a back side that becomes, especially those having a plate shape or a shape close to a plate shape are suitable. An example of such a resin molded product is an automobile decoration member, but other molded products may be used.
【０００８】本発明において樹脂成形品を形成する第１
の樹脂は、製品としての樹脂成形品に要求される特性を
有するものが使用でき、例えばＰＶＣ、ＰＰ、ＰＥＴ、
ＡＢＳ、ＰＣなど、任意の樹脂が使用できる。第２の樹
脂としては第１の樹脂と同一のものでも異質のものでも
よい。同一の樹脂の場合は、第１および第２の樹脂部の
ＳＰ値が同じになるので互いに溶着して固着性に優れ、
成形品の全体の性状が均一になる。また異質の樹脂を使
用する場合は、第１および第２の樹脂部に要求される異
なる性状、色、硬度等を付与することができ、成形品の
裏面となる第２の樹脂としてリサイクル材（再生材）を
使用することもできる。The first method for forming a resin molded product in the present invention
The resin can be used that has characteristics required for a resin molded product as a product, such as PVC, PP, PET,
Any resin such as ABS or PC can be used. The second resin may be the same as or different from the first resin. In the case of the same resin, the SP values of the first and second resin parts are the same, so they are welded to each other and have excellent adhesiveness,
The overall properties of the molded product become uniform. When a different resin is used, different properties, colors, hardness, etc. required for the first and second resin parts can be imparted, and a recycled material ( Recycled material) can also be used.
【０００９】芯材は主として成形品に形状保持性、耐伸
縮性を付与するために用いられ、そのような特性を有す
るものであれば任意のものが使用できる。その例として
はアルミニウム板、鋼板、メッキ鋼板、ステンレス鋼板
等の金属板や硬質樹脂板などの板状部材、また鋼線、黄
銅線等の線状部材のほかセラミックス、木、紙などがあ
げられる。板状の樹脂成形品を製造する場合は板状の芯
材が好ましい。The core material is mainly used for imparting shape retention and stretch resistance to a molded product, and any material can be used as long as it has such characteristics. Examples thereof include plate members such as metal plates such as aluminum plate, steel plate, plated steel plate, stainless steel plate and hard resin plate, and linear members such as steel wire and brass wire, as well as ceramics, wood and paper. . When manufacturing a plate-shaped resin molded product, a plate-shaped core material is preferable.
【００１０】芯材は第１および第２の樹脂との固着性を
よくするため固着手段を講じるのが好ましい。固着手段
としては例えば射出される樹脂の熱で溶着性能が働くホ
ットメルト形の接着剤層を形成するほか、これに代えて
またはこれと併用して連結穴を形成することにより第１
および第２の樹脂を芯材に連結させて固着性を高める方
法などがあげられる。芯材は外形寸法が射出成形型のキ
ャビティより小さい状態で使用する。It is preferable to provide a fixing means for the core material in order to improve the adhesiveness with the first and second resins. As the fixing means, for example, in addition to forming a hot-melt type adhesive layer whose welding performance works by the heat of the injected resin, a connecting hole is formed instead of or in combination with the first adhesive layer.
Another example is a method in which the second resin is connected to the core material to improve the adhesiveness. The core material is used in a state where the outer dimensions are smaller than the cavity of the injection mold.
【００１１】樹脂成形品を形成するための射出成形型
は、キャビティ型、コア型、スライドコア型により形成
され、スライドコア型の先端部に芯材保持部を形成す
る。芯材保持部は第１の樹脂の射出時に芯材が移動しな
いように保持するものであり、芯材の外周縁部に沿っ
て、キャビティ型側に向けて突出する突部を設けたり、
芯材が鉄系磁性体の場合は磁石、芯材が吸着可能な面を
有する場合は真空吸着具などを含むものが使用でき、こ
のほかフック等による引掛手段その他の手段も使用可能
である。An injection mold for forming a resin molded product is formed by a cavity mold, a core mold, and a slide core mold, and a core material holding portion is formed at the tip of the slide core mold. The core material holding portion holds the core material so that the core material does not move during injection of the first resin, and a protrusion protruding toward the cavity mold side is provided along the outer peripheral edge of the core material,
When the core material is an iron-based magnetic material, a magnet can be used, and when the core material has a surface capable of attracting, a material including a vacuum suction tool can be used. In addition, hooking means such as hooks and other means can be used.
【００１２】[0012]
【作用】本発明の製造装置による樹脂成形品の製造方法
は、まずスライドコア型が前進していて、スライドコア
型の先端部に形成された芯材保持部に芯材を保持してい
るとともにキャビティ型とコア型を合わせて型締めした
状態で形成される第１の部分キャビティに、第１の樹脂
流路から第１のゲートを通して第１の樹脂を射出し、成
形品の外表面部を含む第１の樹脂部を形成して芯材と一
体化する。この状態でしばらく保圧するとともに第１の
樹脂をある程度硬化させて、第１の樹脂部と芯材を固着
させ、スライドコア型を後退させて第２の部分キャビテ
ィを形成する。このとき芯材は第１の樹脂部に付着した
まま残るので、第２の樹脂流路から第２のゲートを通し
て第２の部分キャビティに第２の樹脂を射出して成形品
の裏面部を含む第２の樹脂部を形成し、第１の樹脂部お
よび芯材と一体化させることにより芯材を埋込み、樹脂
成形品を製造する。なお、スライドコア型を後退させな
がら、徐々に容積が増大する第２の部分キャビティに第
２の樹脂を同期して射出することもできる。According to the method of manufacturing a resin molded product by the manufacturing apparatus of the present invention, first, the slide core mold is moved forward, and the core material is held in the core material holding portion formed at the tip of the slide core mold. The first resin is injected from the first resin channel through the first gate into the first partial cavity formed by clamping the cavity mold and the core mold together, and the outer surface portion of the molded product is A first resin portion including the first resin portion is formed and integrated with the core material. In this state, the pressure is maintained for a while and the first resin is cured to some extent to fix the first resin portion and the core material, and the slide core mold is retracted to form the second partial cavity. At this time, since the core material remains attached to the first resin portion, the second resin is injected from the second resin flow path into the second partial cavity through the second gate to include the back surface portion of the molded product. The second resin portion is formed and integrated with the first resin portion and the core material to embed the core material to manufacture a resin molded product. The second resin may be synchronously injected into the second partial cavity whose volume gradually increases while the slide core mold is retracted.
【００１３】上記の製造方法では、スライドコア型の芯
材保持部に芯材を保持した状態で第１の樹脂を射出して
第１の樹脂部を形成するため、芯材は保持された位置で
第１の樹脂部と一体化する。またこの状態からスライド
コア型を後退した状態で、または後退させつつ第２の樹
脂を射出し、第２の樹脂部を形成して一体化するので芯
材は所定位置に埋込まれる。こうして本発明では外形寸
法がキャビティより小さい芯材が樹脂成形品の所定位置
に、埋設される。In the above manufacturing method, the first resin is formed by injecting the first resin in a state where the core material is held in the slide core type core material holding portion, so that the core material is held at the held position. Integrated with the first resin part. Further, the second resin is injected from this state in a state where the slide core mold is retracted or while the slide core mold is retracted to form the second resin portion to be integrated, so that the core material is embedded at a predetermined position. Thus, in the present invention, a core material having an outer size smaller than the cavity is embedded in a predetermined position of the resin molded product.
【００１４】[0014]
【実施例】以下、本発明の実施例を図面により説明す
る。図１および図２は実施例において製造する樹脂成形
品を示し、図１（ａ）は平面図、（ｂ）は正面図、図２
（ａ）は図１（ａ）のＡ−Ａ断面図、（ｂ）はＢ−Ｂ断
面図、（ｃ）、（ｄ）は図２（ｂ）のＣ部拡大図であ
る。図１および図２において、１は自動車の装飾部品で
あるボデーサイドモールディングとして使用される樹脂
成形品であり、第１の樹脂部２と第２の樹脂部３間に、
板状の芯材４が埋込まれている。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a resin molded product manufactured in Examples, FIG. 1 (a) is a plan view, FIG. 1 (b) is a front view, and FIG.
1A is a sectional view taken along the line AA of FIG. 1A, FIG. 1B is a sectional view taken along the line BB, and FIGS. 2C and 2D are enlarged views of a C portion of FIG. 2B. In FIGS. 1 and 2, reference numeral 1 denotes a resin molded product used as a body side molding that is a decorative component of an automobile, and is provided between the first resin portion 2 and the second resin portion 3.
A plate-shaped core material 4 is embedded.
【００１５】芯材４の外形寸法は成形品１の外形寸法よ
り小さく、成形品１内に埋込まれている。第１の樹脂部
２は成形品１の装飾面となる外表面側５の全部、芯材４
の両面のうちの外表面側５に位置する片面側を含むよう
に形成されている。第２の樹脂部３は成形品１の周辺部
を除く成形品１の裏面部６を含むように形成され、第１
の樹脂部２および芯材４と固着されて一体化している。
芯材４の固着手段としては、図２（ｃ）では芯材４の両
面に接着剤層７が形成され、図２（ｄ）では、連結穴８
が形成されている。連結穴８としては、丸穴８ａ、傾斜
穴８ｂ、バーリング穴８ｃ、皿穴８ｄなど任意の形状と
することができる。なお、裏面部６に、環状に形成され
た凹状溝３ａは後述する射出成形型の芯材４の保持部に
設けられた突出部分の跡であり、この凹状溝３ａによっ
て一体的に成形された第１の樹脂部２と第２の樹脂部３
との境界を形成している。The outer dimension of the core material 4 is smaller than the outer dimension of the molded product 1 and is embedded in the molded product 1. The first resin part 2 is entirely on the outer surface side 5 serving as the decorative surface of the molded product 1, the core material 4
It is formed so as to include one surface side of the both surfaces located on the outer surface side 5. The second resin portion 3 is formed so as to include the back surface portion 6 of the molded product 1 excluding the peripheral portion of the molded product 1.
The resin portion 2 and the core material 4 are fixed and integrated.
As a fixing means for the core material 4, adhesive layers 7 are formed on both surfaces of the core material 4 in FIG. 2C, and a connecting hole 8 is formed in FIG. 2D.
Are formed. The connecting hole 8 may have any shape such as a round hole 8a, an inclined hole 8b, a burring hole 8c, and a countersink hole 8d. An annular recessed groove 3a formed on the back surface 6 is a mark of a protruding portion provided on a holding portion of a core material 4 of an injection molding die, which will be described later, and is integrally molded by the recessed groove 3a. First resin part 2 and second resin part 3
It forms the boundary with.
【００１６】図３は射出成形型を示し、（ａ）は図４の
Ｄ−Ｄ相当断面図、（ｂ）は図３（ａ）のＥ−Ｅ断面
図、図４はコア型の平面図、図５は図３（ｂ）の部分拡
大図、図６（ａ）、（ｂ）は図３（ａ）の部分拡大図で
ある。FIG. 3 shows an injection molding die, (a) is a sectional view corresponding to DD of FIG. 4, (b) is an EE sectional view of FIG. 3 (a), and FIG. 4 is a plan view of the core die. 5 is a partially enlarged view of FIG. 3 (b), and FIGS. 6 (a) and 6 (b) are partially enlarged views of FIG. 3 (a).
【００１７】射出成形型１０はキャビティ型１１、コア
型１２およびスライドコア型１３から構成され、これら
によってキャビティ１４が形成されるようになってい
る。キャビティ型１１は成形品１の外表面形状５に対応
する型面１１ａを有する。コア型１２はキャビティ型１
１との分割面１５および成形品１の裏面側の周辺部に対
応する型面１２ａを有する。スライドコア型１３はコア
型１２内でキャビティ型１１側に向けて前進後退可能に
設けられ、成形品１の裏面部６の中央部に対応する型面
１３ａを有する。The injection mold 10 is composed of a cavity mold 11, a core mold 12, and a slide core mold 13, and a cavity 14 is formed by these. The cavity mold 11 has a mold surface 11 a corresponding to the outer surface shape 5 of the molded product 1. Core mold 12 is cavity mold 1
1 and a mold surface 12a corresponding to the peripheral portion on the back surface side of the molded product 1. The slide core mold 13 is provided in the core mold 12 so as to be able to move forward and backward toward the cavity mold 11 side, and has a mold surface 13a corresponding to the central portion of the back surface portion 6 of the molded product 1.
【００１８】スライドコア型１３の先端の型面１３ａに
は芯材保持部として周囲をキャビティ型１１側に向けて
突出する突出縁１６ａによって囲まれている保持凹部１
６および磁石１７が形成されている。保持凹部１６は芯
材４が先端部から突出しないように保持する構造となっ
ている。磁石１７は樹脂の射出時に芯材４が移動しない
ように保持するものであればよく、永久磁石でも電磁石
でもよい。スライドコア型１３は油圧シリンダ等の流体
圧シリンダ１８によってコア型１２とスライドし、前進
後退可能となっている。スライドコア型１３の前進によ
りキャビティ型１１、コア型１２およびスライドコア型
１３の側面１３ｂ、ならびにスライドコア型１３の先端
の型面１３ａに保持された芯材４の片面とによって第１
の部分キャビティ１４ａが形成され、この状態で第１の
樹脂部２が形成された後に、スライドコア型１３の後退
したときに第１の樹脂部２とスライドコア型１３の先端
の型面１３ａとの間に第２の部分キャビティ１４ｂが形
成されるようになっている。コア型１２もキャビティ型
１１に対して前進後退して型締め、型開き可能とされて
いるが、移動機構の図示は略されている。On the die surface 13a at the tip of the slide core die 13, a holding concave portion 1 is surrounded by a projecting edge 16a which projects as a core material holding portion toward the cavity die 11 side.
6 and the magnet 17 are formed. The holding concave portion 16 has a structure for holding the core material 4 so as not to project from the tip portion. The magnet 17 should just hold | maintain so that the core material 4 may not move at the time of injection of resin, and may be a permanent magnet or an electromagnet. The slide core mold 13 slides with the core mold 12 by means of a fluid pressure cylinder 18 such as a hydraulic cylinder, and can move forward and backward. When the slide core mold 13 is advanced, the cavity mold 11, the side faces 13b of the core mold 12 and the slide core mold 13, and the one face of the core material 4 held by the mold face 13a at the tip of the slide core mold 13
Part cavity 14a is formed, and after the first resin part 2 is formed in this state, when the slide core mold 13 retracts, the first resin part 2 and the mold surface 13a at the tip of the slide core mold 13 The second partial cavity 14b is formed between them. The core mold 12 can also be moved forward and backward with respect to the cavity mold 11 to close the mold to open the mold, but the moving mechanism is not shown.
【００１９】キャビティ型１１には、射出成形機の樹脂
射出ノズル２０に連絡する１つの樹脂供給路２１が設け
られ、流路切り替え弁としてのスプルー切換ブロック２
２により第１のスプルー２３ａと第２のスプルー２３ｂ
の流路を択一的に選択して切換えるように構成されてい
る。すなわちスプルー切換ブロック２２は流路２２ａ、
２２ｂを有し、油圧シリンダ等の流体圧シリンダ２４に
よって前進後退し、樹脂供給路２１を第１および第２の
スプルー２３ａ、２３ｂと接続するようになっている。
樹脂供給路２１およびスプルー切換ブロック２２の周囲
にはバンドヒータ２５ａ、２５ｂが設けられ、この部分
では樹脂が常時射出可能な軟化状態に加熱されている。The cavity mold 11 is provided with one resin supply passage 21 communicating with the resin injection nozzle 20 of the injection molding machine, and the sprue changeover block 2 as a flow passage changeover valve 2.
2 by the first sprue 23a and the second sprue 23b
It is configured to selectively select and switch the flow paths. That is, the sprue switching block 22 includes the flow path 22a,
22b, and is moved forward and backward by a fluid pressure cylinder 24 such as a hydraulic cylinder to connect the resin supply passage 21 to the first and second sprues 23a and 23b.
Band heaters 25a and 25b are provided around the resin supply path 21 and the sprue switching block 22, and the resin is heated in this portion to a softened state where it can be always injected.
【００２０】第１のスプルー２３ａはキャビティ型１１
およびコア型１２間に形成された第１のランナー２６
ａ、およびコア型１２に形成された第１のゲート２７ａ
を通してキャビティ１４に連通している。また第２のス
プルー２３ｂはキャビティ型１１およびコア型１２間に
形成された第２のランナー２６ｂ、およびコア型１２に
形成された第３のスプルー２７ｂを通して、スライドコ
ア型１３の内部に設けられたサブマリン式の第２のゲー
ト２７ｃに連通するようになっている。なお本実施例で
は、「スプルー」および「ランナー」はその形状の違い
によって別の用語を使用しているが、共に「樹脂流路」
として用いられている。The first sprue 23a is a cavity mold 11
And a first runner 26 formed between the core mold 12
a and the first gate 27a formed on the core mold 12
Through to the cavity 14. The second sprue 23b is provided inside the slide core mold 13 through a second runner 26b formed between the cavity mold 11 and the core mold 12 and a third sprue 27b formed on the core mold 12. It is adapted to communicate with the second submarine gate 27c. In this embodiment, "sprue" and "runner" use different terms depending on the difference in shape, but both are "resin flow path".
Is used as.
【００２１】スライドコア型１３の後退位置においても
前進位置においても第３のスプルー２７ｂと第２のゲー
ト２７ｃとは常時連通しているように構成されている。
そしてスライドコア型１３の第２のゲート２７ｃと連通
する位置にはキャビティ１４に向けて開口する樹脂射出
路２８が形成されている。なお、スライドコア型１３の
先端の型面１３ａにおける樹脂射出路２８の開口の大き
さは、後述する第１の樹脂の射出圧力によって芯材４に
変形を起こさない程度の大きさとするのが好ましい。The third sprue 27b and the second gate 27c are always communicated with each other in both the retracted position and the advanced position of the slide core mold 13.
A resin injection passage 28 that opens toward the cavity 14 is formed at a position where the slide core mold 13 communicates with the second gate 27c. The size of the opening of the resin injection passage 28 in the mold surface 13a at the tip of the slide core mold 13 is preferably such that the core material 4 is not deformed by the injection pressure of the first resin described later. .
【００２２】上記の製造装置による樹脂成形品１の製造
方法は、まず型開きした状態で、図２（ｃ）、（ｄ）に
示すように、接着剤層７および／または連結穴８を形成
した磁石による吸着可能な芯材４をスライドコア型１３
の先端の型面１３ａに形成された芯材保持部としての保
持凹部１６に突出縁１６ａをまたがないようにセットし
て、磁石１７で吸着することにより保持する。これによ
り、芯材４はスライドコア型１３の先端の型面１３ａの
ほぼ全面で接触して保持される。この状態で、コア型１
２を前進させてキャビティ型１１とコア型１２を合わせ
て型締めする。そして流体圧シリンダ１８により、図３
（ａ）、（ｂ）、図５、図６（ａ）に示すようにスライ
ドコア型１３を前進させて、第１の部分キャビティ１４
ａを形成する。なお、スライドコア型１３を先に前進さ
せておき、次いで芯材４をセットすることもでき、どち
らにするかは作業性を考慮して選択すればよい。また磁
石１７に代えて真空吸着で芯材４を保持させるときは、
磁石１７と同じ部分に真空吸着具を設け、負圧にして芯
材を保持し、離型のときは与圧して離型を容易にするこ
ともできる。In the method of manufacturing the resin molded product 1 by the above-described manufacturing apparatus, first, the adhesive layer 7 and / or the connecting hole 8 are formed in the mold open state as shown in FIGS. 2 (c) and 2 (d). The core material 4 that can be attracted by the magnet
The projecting edge 16a is set so as not to straddle the holding recessed portion 16 as a core material holding portion formed on the mold surface 13a at the tip of, and is held by being attracted by the magnet 17. As a result, the core material 4 is held in contact with almost the entire mold surface 13a at the tip of the slide core mold 13. In this state, core type 1
2 is advanced and the cavity mold 11 and the core mold 12 are aligned and clamped. Then, by the fluid pressure cylinder 18, as shown in FIG.
As shown in (a), (b), FIG. 5, and FIG. 6 (a), the slide core mold 13 is moved forward to move the first partial cavity 14
a is formed. It is also possible to advance the slide core mold 13 first and then set the core material 4, and which one should be selected may be selected in consideration of workability. When the core material 4 is held by vacuum attraction instead of the magnet 17,
A vacuum suction tool may be provided in the same portion as the magnet 17 to hold the core material by applying a negative pressure and pressurize at the time of release to facilitate release.
【００２３】一方、流体圧シリンダ２４によりスプルー
切換ブロック２２を後退させて、図３（ｂ）に示すよう
に流路２２ａにより樹脂供給路２１を第１のスプルー２
３ａに連通する。そして樹脂射出ノズル２０から樹脂を
射出し、図５に示すように第１のランナー２６ａから第
１のゲート２７ａを通して第１の樹脂２９ａを第１の部
分キャビティ１４ａ内に射出し、成形品１の外表面側５
を含む第１の樹脂部２を形成して芯材４と一体化する。
このとき、射出されて流動する第１の樹脂２９ａは突出
縁１６ａを乗り越えてから芯材４を覆うように進むの
で、芯材４をその端部からめくり上げるような作用を及
ぼさない。この状態でしばらく保圧して第１の樹脂部２
をある程度硬化（第２の樹脂を射出したときの圧力によ
って変形したりしない程度の硬さ）させて、第１の樹脂
部２と芯材４を固着させる。On the other hand, the fluid pressure cylinder 24 is used to retract the sprue switching block 22, and the resin supply passage 21 is connected to the first sprue 2 by the passage 22a as shown in FIG. 3 (b).
Communicate with 3a. Then, the resin is injected from the resin injection nozzle 20, and the first resin 29a is injected from the first runner 26a through the first gate 27a into the first partial cavity 14a as shown in FIG. Outer surface side 5
The first resin portion 2 including is formed and integrated with the core material 4.
At this time, the injected and flowing first resin 29a goes over the projecting edge 16a and then covers the core material 4, so that the core material 4 is not turned up from its end. In this state, the pressure is maintained for a while and the first resin portion 2
Is cured to some extent (hardness such that it is not deformed by the pressure when the second resin is injected), and the first resin portion 2 and the core material 4 are fixed.
【００２４】この状態から流体圧シリンダ１８によりス
ライドコア型１３を後退させて第２の部分キャビティ１
４ｂを形成する。このとき必要によりスライドコア型１
３と芯材４とを分離するために押出ピン（図示省略）に
より芯材４をスライドコア型１３の先端の型面１３ａと
確実に分離することができ、芯材４は第１の樹脂部２に
付着したまま残り、第３のスプルー２７ｂと第２のゲー
ト２７ｃは位置関係がずれるものの連通したままであ
る。続いて流体圧シリンダ２４によりスプルー切換ブロ
ック２２を前進させ、図６（ｂ）に示すように流路２２
ｂにより樹脂供給路２１を第２のスプルー２３ｂに連通
する。これにより第２のランナー２６ｂから第３のスプ
ルー２７ｂ、第２のゲート２７ｃ、樹脂射出路２８を通
して第２の部分キャビティ１４ｂに第２の樹脂２９ｂを
射出して成形品１の裏面部６を含む第２の樹脂部３を形
成し、第１の樹脂部２および芯材４と一体化させること
により芯材４を埋込み、樹脂成形品１を製造する。樹脂
射出路２８から射出される樹脂は芯材４をキャビティ型
１１に向けて押付ける方向に射出されるため、芯材４の
移動は防止される。From this state, the slide core mold 13 is retracted by the fluid pressure cylinder 18 to move the second partial cavity 1
4b is formed. At this time, if necessary, slide core type 1
The core material 4 can be reliably separated from the mold surface 13a at the tip of the slide core mold 13 by an extrusion pin (not shown) for separating the core material 4 from the core material 4. The second sprue 27b and the second gate 27c remain in contact with each other even though their positional relationship is deviated. Subsequently, the fluid pressure cylinder 24 advances the sprue switching block 22 to move the flow path 22 as shown in FIG.
The resin supply path 21 communicates with the second sprue 23b by b. As a result, the second resin 29b is injected from the second runner 26b through the third sprue 27b, the second gate 27c, and the resin injection passage 28 into the second partial cavity 14b to include the back surface portion 6 of the molded product 1. The resin material 1 is manufactured by forming the second resin portion 3 and embedding the core material 4 by integrating with the first resin portion 2 and the core material 4. Since the resin injected from the resin injection passage 28 is injected in the direction in which the core material 4 is pressed toward the cavity mold 11, the movement of the core material 4 is prevented.
【００２５】上記の製造方法では、スライドコア型１３
の保持凹部１６に芯材４が保持され先端の型面１３ａの
ほぼ全面に接触して支持されている状態で第１の樹脂２
９ａを射出して第１の樹脂部２を形成するため、芯材４
は保持された位置で第１の樹脂部２と一体化する。また
この状態からスライドコア型１３を後退した状態で第２
の樹脂２９ｂを射出し、第２の樹脂部３を形成して一体
化するので芯材４は所定の位置に正確に埋込まれる。こ
うして外形寸法がキャビティ１４より小さい芯材４が樹
脂成形品１の所定位置に、完全に埋設される。なお、第
２の樹脂２９ｂを射出する際には、スライドコア型１３
を後退させながら、第２の部分キャビティ１４ｂの容積
を増大させつつ、増大しつつある容積に応じて第２の樹
脂２９ｂを射出することもでき、これにより成形時間を
前者よりも短かくすることができる。このときスライド
コア型１３の後退と第２の樹脂の射出とを同期させるよ
うに制御する。In the above manufacturing method, the slide core mold 13 is used.
The core material 4 is held in the holding recess 16 of the first resin 2 in a state of being supported in contact with almost the entire mold surface 13a at the tip.
In order to form the first resin portion 2 by injecting 9a, the core material 4
Is integrated with the first resin portion 2 at the held position. In addition, when the slide core mold 13 is retracted from this state, the second
The resin 29b is injected to form the second resin portion 3 and integrated, so that the core material 4 is accurately embedded in a predetermined position. In this way, the core material 4 having an outer size smaller than the cavity 14 is completely embedded in a predetermined position of the resin molded product 1. When injecting the second resin 29b, the slide core mold 13
It is also possible to inject the second resin 29b in accordance with the increasing volume while increasing the volume of the second partial cavity 14b while retreating, thereby making the molding time shorter than the former. You can At this time, the backward movement of the slide core mold 13 and the injection of the second resin are controlled so as to be synchronized with each other.
【００２６】前記実施例は第１および第２の樹脂が同一
の樹脂の例であるが、図７（ａ）は第１および第２の樹
脂が異なる樹脂である第２の実施例の射出成形型を示す
図８のＦ−Ｆ相当断面図であって、図７（ｂ）のＨ−Ｈ
断面図を示し、図７（ｂ）は図７（ａ）のＧ−Ｇ−断面
図、図８はコア型の平面図である。この実施例では、キ
ャビティ型１１に第１の樹脂供給路２１ａと第２の樹脂
供給路２１ｂが別々に設けられて、別の射出成形機の樹
脂射出ノズル２０ａ、２０ｂならびに第１および第２の
スプルー２３ａ、２３ｂに連通し、異なる第１および第
２の樹脂２９ａ、２９ｂを射出するように構成されてい
る点、および樹脂流路切替弁を有していない点で第１の
実施例と異なり、他の部分の構成は第１の実施例の場合
と基本的に同一である。Although the above-mentioned embodiment is an example in which the first and second resins are the same resin, FIG. 7A shows the injection molding of the second embodiment in which the first and second resins are different resins. FIG. 9 is a cross-sectional view corresponding to F-F in FIG. 8 showing a mold, and taken along line H-H in FIG.
FIG. 7B is a sectional view, FIG. 7B is a sectional view taken along line GG of FIG. 7A, and FIG. 8 is a plan view of the core type. In this embodiment, the cavity mold 11 is provided with the first resin supply path 21a and the second resin supply path 21b separately, and the resin injection nozzles 20a, 20b and the first and second resin injection nozzles 20a, 20b of another injection molding machine are provided. Different from the first embodiment in that it is configured to communicate with the sprues 23a and 23b and inject different first and second resins 29a and 29b, and that it does not have a resin flow path switching valve. The configuration of the other parts is basically the same as that of the first embodiment.
【００２７】上記の装置による樹脂成形品１の製造方法
は、図７のように型締めし、芯材４を保持してスライド
コア型１３を前進させた位置で、樹脂射出ノズル２０ａ
から第１の樹脂２９ａを供給し、第１の樹脂供給路２１
ａ、第１のスプルー２３ａ、第１のランナー２６ａ、第
１のゲート２７ａを通して第１の部分キャビティ１４ａ
に射出して第１の樹脂部２を形成し、芯材４と一体化さ
せる。そして第１の樹脂部２がある程度硬化した段階
で、スライドコア型１３を後退させ、第２の樹脂射出ノ
ズル２０ｂから第２の樹脂２９ｂを供給し、第２の樹脂
供給路２１ｂ、第２のスプルー２３ｂ、第２のランナー
２６ｂ、第３のスプルー２７ｂ、第２のゲート２７ｃ、
樹脂射出路２８を通して第２の部分キャビティ１４ｂに
射出し、第２の樹脂部３を形成して一体化し、樹脂成形
品１を製造する。スライドコア型１３の後退と第２の樹
脂の射出のタイミングは第１の実施例で説明したものと
同じように同期させることができる。In the method of manufacturing the resin molded product 1 using the above apparatus, the resin injection nozzle 20a is clamped at the position where the core material 4 is held and the slide core mold 13 is advanced as shown in FIG.
To supply the first resin 29a from the first resin supply path 21.
a, the first sprue 23a, the first runner 26a, the first gate 27a, and the first partial cavity 14a.
Then, the first resin portion 2 is formed by injection and is integrated with the core material 4. Then, when the first resin portion 2 is cured to some extent, the slide core mold 13 is retracted, the second resin 29b is supplied from the second resin injection nozzle 20b, the second resin supply passage 21b, and the second resin supply path 21b. Sprue 23b, second runner 26b, third sprue 27b, second gate 27c,
It is injected into the second partial cavity 14b through the resin injection passage 28, the second resin portion 3 is formed and integrated, and the resin molded product 1 is manufactured. The timing of retreating the slide core mold 13 and the injection of the second resin can be synchronized in the same manner as that described in the first embodiment.
【００２８】この第２の実施例では第２の樹脂２９ｂと
して、第１の樹脂２９ａとは色、硬度、繊維等の補強材
混入の有無およびその量、その他の性状の異なる樹脂を
使用して多重成形を行うことができ、第２の樹脂として
再生材料を使用することも可能であり、この場合には材
料コストを低減することができる。In the second embodiment, as the second resin 29b, a resin different from the first resin 29a in color, hardness, presence / absence of the amount of reinforcing material such as fibers, and the like, and other properties are used. Multiple molding can be performed, and a recycled material can be used as the second resin, in which case the material cost can be reduced.
【００２９】図９ないし図１１は第１および第２の樹脂
として同一の樹脂を使用するが、製造装置の構成が異な
る場合の他の第３の実施例を示し、図９（ａ）は射出成
形型を示す図１０のＩ−Ｉ相当断面図、図９（ｂ）は図
１０のＪ−Ｊ相当断面図、図１０はコア型の平面図、図
１１（ａ）、（ｂ）は図９（ａ）の部分拡大図である。
この実施例では、１個のスプルー２３が１つの樹脂供給
路２１に連通し、スプルー２３と、キャビティ型１１と
コア型１２との分割面１５の位置に設けられた第１およ
び第２のランナー２６ａ、２６ｂの連通部にスプルー切
換ブロック２２がキャビティ型１１側に向けて前進後退
動可能に、コア型１２に設けられて、流体圧シリンダ２
４により前進後退し、流路を切換えるように構成されて
いる。なお、スプルー切替ブロック２２のキャビティ型
１１側先端２２ｃの大きさはスプルー２３のコア型１２
側の開口２３ｃの大きさよりも大きく作られていて、切
替ブロック２２が前進したときには先端２２ｃがキャビ
ティ型１１の分割面１５に当接して開口２３ｃを塞ぎ、
この結果スプルー２３はキャビティ型１１の分割面１５
側に凹溝状に形成された第１のランナー２６ａとだけ連
通され、コア型１２の分割面１５側の第１ランナー２６
ａとは異なる位置に凹溝状に形成された第２のランナー
２６ｂとは連通されない。9 to 11 show another third embodiment in which the same resin is used as the first and second resins, but the construction of the manufacturing apparatus is different, and FIG. 9 (a) shows injection. 10 showing a molding die, which is a sectional view corresponding to I-I in FIG. 10, FIG. 9B is a sectional view corresponding to JJ in FIG. 10, FIG. 10 is a plan view of the core die, and FIGS. 11A and 11B are diagrams. 9 (a) is a partially enlarged view of FIG.
In this embodiment, one sprue 23 communicates with one resin supply path 21, and the first and second runners provided at the position of the sprue 23 and the dividing surface 15 between the cavity mold 11 and the core mold 12. A sprue switching block 22 is provided in the core mold 12 so as to move forward and backward toward the cavity mold 11 side at the communicating portion of the fluid cylinders 26a and 26b.
It is configured to move forward and backward by 4 to switch the flow path. The size of the tip 22c of the sprue switching block 22 on the side of the cavity mold 11 is the same as that of the core mold 12 of the sprue 23.
It is made larger than the size of the opening 23c on the side, and when the switching block 22 advances, the tip 22c abuts the dividing surface 15 of the cavity mold 11 to close the opening 23c,
As a result, the sprue 23 is separated by the dividing surface 15 of the cavity mold 11.
The first runner 26 on the side of the dividing surface 15 of the core mold 12 that is communicated only with the first runner 26a formed in the concave shape on the side.
It does not communicate with the second runner 26b formed in a groove shape at a position different from a.
【００３０】上記の装置による樹脂成形品１の製造方法
は、図９（ａ）、図１１（ａ）に示すように型締めし
て、流体圧シリンダ１８により芯材４を保持してスライ
ドコア型１３を前進させる。一方、流体圧シリンダ２４
によりスプルー切換ブロック２２を前進させ、スプルー
２３の先端の開口２３ｃを塞いだ状態で、樹脂射出ノズ
ル２０から樹脂を供給すると、図９（ｂ）に示すよう
に、第１の樹脂は樹脂供給路２１、スプルー２３、第１
のランナー２６ａ、第１のゲート２７ａを通って第１の
部分キャビティ１４ａに導入され、第１の樹脂部２を形
成する。In the method of manufacturing the resin molded product 1 by the above apparatus, as shown in FIGS. 9 (a) and 11 (a), the mold is clamped, the fluid pressure cylinder 18 holds the core material 4, and the slide core is held. The mold 13 is moved forward. On the other hand, the fluid pressure cylinder 24
When the resin is supplied from the resin injection nozzle 20 with the sprue switching block 22 moved forward by the above and the opening 23c at the tip of the sprue 23 is closed, as shown in FIG. 9B, the first resin is the resin supply path. 21, sprue 23, first
Is introduced into the first partial cavity 14a through the runner 26a, the first gate 27a, and forms the first resin portion 2.
【００３１】第１の樹脂部２がある程度硬化した時点で
流体圧シリンダ１８によりスライドコア型１３を後退さ
せるとともに、流体圧シリンダ２４によりスプルー切換
ブロック２２を後退させる。これにより、切替ブロック
２２の先端２２ｃとスプルー２３の先端（開口２３ｃと
同じ）との間にスペースが生じるとともに、このスペー
スが第２のランナー２６ｂと連通される。またスプルー
２３と第１のランナー２６ａとは連通されたままである
が、第１のランナー２６ａ内には先に射出された第１の
樹脂２９ａが入ったままなので、第２の樹脂が入り込む
余地がなく、従ってスプルー２３と第１のランナー２６
ａとは機械的にしゃ断されたのと等しくなり、結果とし
てスプルー２３は第２のランナー２６ｂとのみ連通され
ることになり、第１の流路から第２の流路に切り替えら
れたことになる。スプルー２３の樹脂は第２の樹脂２９
ｂとして第２のランナー２６ｂ、第３のスプルー２７
ｂ、第２のゲート２７ｃ、樹脂射出路２８を通して第２
の部分キャビティ１４ｂに射出され、第２の樹脂部３を
形成し、樹脂成形品１を製造する。When the first resin portion 2 is cured to some extent, the fluid pressure cylinder 18 retracts the slide core mold 13 and the fluid pressure cylinder 24 retracts the sprue switching block 22. As a result, a space is created between the tip 22c of the switching block 22 and the tip of the sprue 23 (the same as the opening 23c), and this space communicates with the second runner 26b. Further, although the sprue 23 and the first runner 26a are still in communication with each other, the first resin 29a injected earlier remains in the first runner 26a, so that there is room for the second resin to enter. No, therefore sprue 23 and first runner 26
a becomes equal to that mechanically cut off, and as a result, the sprue 23 is communicated only with the second runner 26b, and the first flow path is switched to the second flow path. Become. The resin of the sprue 23 is the second resin 29.
The second runner 26b and the third sprue 27 as b
b through the second gate 27c and the resin injection passage 28
Then, the second resin portion 3 is formed by injection into the partial cavity 14b, and the resin molded product 1 is manufactured.
【００３２】なお、前記各実施例は樹脂成形品１として
自動車用の装飾部品であるボデーサイドモールディング
の製造の例を示したが、他の樹脂成形品の製造も可能で
あり、それぞれの成形品に合わせてキャビティ１４の形
状、その他の成形型１０の構造を変更することができ
る。また前記各実施例においては第１、第２のゲートと
も１個の場合について記載したが、特に第２のゲートは
複数ケ所に設けて第２の樹脂の充填を容易にすることが
できる。In each of the above-mentioned embodiments, the example of manufacturing the body side molding, which is a decorative component for automobiles, is shown as the resin molded product 1. However, other resin molded products can be manufactured. The shape of the cavity 14 and other structures of the molding die 10 can be changed according to the above. Further, in each of the above-described embodiments, the case where both the first and second gates are provided has been described, but in particular, the second gate can be provided at a plurality of places to facilitate the filling of the second resin.
【００３３】[0033]
【発明の効果】本発明の請求項１の製造方法によれば、
外形寸法がキャビティより小さい芯材をスライドコア型
の先端部に保持した状態で、第１の樹脂流路から第１の
ゲートを通して第１の樹脂を射出して第１の樹脂部を形
成し、第１の樹脂部がある程度硬化した状態でスライド
コア型を後退させ、第２の樹脂流路から第２のゲートを
通して第２の樹脂を射出して第２の樹脂部を形成するよ
うにしたので、簡単な装置と操作により、芯材を移動さ
せることなく、所定の位置に保持して樹脂を射出するこ
とができ、これにより芯材を成形体の所定位置に配置す
るように埋設した樹脂成形品を射出成形により製造する
ことができる。According to the manufacturing method of claim 1 of the present invention,
With the core material having an outer dimension smaller than that of the cavity being held at the tip of the slide core mold ,
The first resin portion is formed by injecting the first resin through the gate, and the slide core mold is retracted in a state where the first resin portion is cured to some extent, and the second gate is removed from the second resin flow path.
Since the second resin portion is formed by injecting the second resin therethrough, it is possible to inject the resin by holding it at a predetermined position without moving the core material by a simple device and operation. As a result, a resin molded product in which the core material is embedded so as to be arranged at a predetermined position of the molded product can be manufactured by injection molding.
【００３４】本発明の請求項２の製造方法によれば、請
求項１の効果に加え、第１の樹脂部がある程度硬化した
状態でスライドコア型を後退させつつ第２の樹脂を射出
することにより、成形時間を短縮できる。According to the manufacturing method of claim 2 of the present invention, in addition to the effect of claim 1, injecting the second resin while retracting the slide core mold in a state where the first resin portion is cured to some extent. As a result, the molding time can be shortened.
【００３５】本発明の請求項３の製造方法によれば、第
１および第２の樹脂として同一の樹脂を用いることによ
り、第１および第２の樹脂の固着性に優れ、全体が均一
な性状を有する成形品を製造することができる。According to the manufacturing method of claim 3 of the present invention, by using the same resin as the first and second resins, the first and second resins are excellent in sticking property and have a uniform property as a whole. It is possible to manufacture a molded product having
【００３６】本発明の請求項４の製造方法によれば、第
１および第２の樹脂として異なる樹脂を用いることによ
り、色、硬度等の物性の異なる樹脂部を形成して一体化
することができる。According to the manufacturing method of claim 4 of the present invention, by using different resins as the first and second resins, it is possible to form and integrate resin portions having different physical properties such as color and hardness. it can.
【００３７】本発明の請求項５の製造方法によれば、再
生材を用いることにより、任意の部分特に装飾性が要求
されない部分に再生材を用い、資源を有効利用すること
ができる。According to the manufacturing method of the fifth aspect of the present invention, by using the recycled material, the recycled material can be used in an arbitrary portion, particularly in a portion where decorativeness is not required, and resources can be effectively used.
【００３８】本発明の請求項６の製造方法によれば、第
２の樹脂を芯材をキャビティ型に向けて押付ける方向に
射出することにより、芯材の移動を防止することができ
る。According to the manufacturing method of claim 6 of the present invention, the core material can be prevented from moving by injecting the second resin in the direction of pressing the core material toward the cavity mold.
【００３９】本発明の請求項７の製造装置によれば、芯
材保持部を有するスライドコア型を前進後退可能に設け
たので、外形寸法がキャビティより小さい芯材をキャビ
ティ内に保持して、前記の方法により樹脂成形品を効率
よく製造することができる。According to the manufacturing apparatus of claim 7 of the present invention, since the slide core mold having the core material holding portion is provided so as to be able to move forward and backward, the core material having an outer size smaller than the cavity is held in the cavity, A resin molded product can be efficiently produced by the above method.
【００４０】本発明の請求項８の製造装置によれば、磁
石により芯材を吸着することにより、簡単な装置と操作
により芯材を保持して射出成形を行うことができる。According to the manufacturing apparatus of the eighth aspect of the present invention, by adsorbing the core material by the magnet, the core material can be held and injection molded by a simple device and operation.
【００４１】本発明の請求項９の製造装置によれば、真
空吸着具により芯材を保持することにより、芯材を確実
に保持して射出成形を行い、かつエアの吹出しにより離
型を容易にすることができる。According to the manufacturing apparatus of claim 9 of the present invention, by holding the core material by the vacuum suction tool, the core material is securely held for injection molding, and the mold release is facilitated by blowing air. Can be
【００４２】本発明の請求項１０の製造装置によれば芯
材の外周縁部に沿う突部を設けたことにより、芯材の位
置決めが容易でセットしやすく、かつ樹脂の流動や射出
圧による芯材のズレを防止することができる。According to the manufacturing apparatus of the tenth aspect of the present invention, by providing the protrusions along the outer peripheral edge of the core material, the core material can be easily positioned and set, and the flow of the resin and the injection pressure can be used. It is possible to prevent the core material from shifting.
【００４３】本発明の請求項１１の製造装置によれば、
第１の樹脂流路と第２の樹脂流路を切替弁で択一的に切
替えることにより、簡単な構成で同一の第１の樹脂と第
２の樹脂を第１の部分キャビティおよび時間的な遅れを
もって第２の部分キャビティに射出できる。According to the manufacturing apparatus of claim 11 of the present invention,
By selectively switching between the first resin flow path and the second resin flow path with the switching valve, the same first resin and second resin can be simply and simply configured by the first partial cavity and the temporal change. It can be injected into the second partial cavity with a delay.
【００４４】本発明の請求項１２の製造装置によれば、
第１の樹脂流路と第２の樹脂流路から独立に樹脂を流す
ことにより、第１の樹脂および第１の樹脂とは性状の異
なる第２の樹脂をそれぞれ第１の部分キャビティおよび
第２の部分キャビティに確実に射出できる。According to the manufacturing apparatus of claim 12 of the present invention,
By allowing the resin to flow independently from the first resin flow path and the second resin flow path, the first resin and the second resin having different properties from the first resin are respectively supplied to the first partial cavity and the second resin. Can be reliably injected into the partial cavity.
【図１】（ａ）は実施例で製造する樹脂成形品の平面
図、（ｂ）は正面図である。FIG. 1A is a plan view of a resin molded product manufactured in an embodiment, and FIG. 1B is a front view.
【図２】（ａ）は図１（ａ）のＡ−Ａ断面図、（ｂ）は
Ｂ−Ｂ断面図、（ｃ）、（ｄ）は（ｂ）のＣ部拡大図で
ある。2A is a sectional view taken along the line AA of FIG. 1A, FIG. 2B is a sectional view taken along the line BB, and FIGS. 2C and 2D are enlarged views of a C portion of FIG. 2B.
【図３】（ａ）は実施例の射出成形型を示す図４のＤ−
Ｄ相当断面図、（ｂ）は（ａ）のＥ−Ｅ断面図である。FIG. 3 (a) is a view showing the injection molding die of the embodiment, which is indicated by D- in FIG.
Sectional view equivalent to D, (b) is an EE sectional view of (a).
【図４】図３のコア型の平面図である。FIG. 4 is a plan view of the core mold of FIG.
【図５】図３（ｂ）の部分拡大図である。5 is a partially enlarged view of FIG. 3 (b).
【図６】（ａ）、（ｂ）は図３（ａ）の部分拡大図であ
る。6 (a) and 6 (b) are partial enlarged views of FIG. 3 (a).
【図７】（ａ）は他の実施例の射出成形型を示す図８の
Ｆ−Ｆ相当断面図、（ｂ）は（ａ）のＧ−Ｇ断面図であ
る。7A is a sectional view corresponding to FF of FIG. 8 showing an injection mold of another embodiment, and FIG. 7B is a sectional view taken along line GG of FIG.
【図８】図７のコア型の平面図である。8 is a plan view of the core mold of FIG. 7. FIG.
【図９】（ａ）はさらに他の実施例の射出成形型を示す
図１０のＩ−Ｉ相当断面図、（ｂ）はＪ−Ｊ相当断面図
である。9A is a sectional view corresponding to II of FIG. 10 showing an injection mold of still another embodiment, and FIG. 9B is a sectional view corresponding to JJ.
【図１０】図９のコア型の平面図である。FIG. 10 is a plan view of the core mold of FIG.
【図１１】（ａ）、（ｂ）は図９（ａ）の部分拡大図で
ある。11 (a) and (b) are partially enlarged views of FIG. 9 (a).
１ 樹脂成形品 ２ 第１の樹脂部 ３ 第２の樹脂部 ４ 芯材 ５ 外表面側 ６ 裏面部 ７ 接着剤層 ８ 連結穴 １０ 射出成形型 １１ キャビティ型 １１ａ，１２ａ，１３ａ 型面 １２ コア型 １３ スライドコア型 １４ キャビティ １４ａ 第１の部分キャビティ １４ｂ 第２の部分キャビティ １５ 分割面 １６ 保持凹部 １７ 磁石 １８，２４ 流体圧シリンダ ２０，２０ａ，２０ｂ 樹脂射出ノズル ２１，２１ａ，２１ｂ 樹脂供給路 ２２ スプルー切換ブロック（樹脂流路切替弁） ２２ｃ スプルーのキャビティ型側先端 ２３ スプルー ２３ａ 第１のスプルー ２３ｂ 第２のスプルー ２３ｃ スプルーのコア型側開口 ２５ａ、２５ｂ バンドヒータ ２６ａ 第１のランナー ２６ｂ 第２のランナー ２７ａ 第１のゲート ２７ｂ 第３のスプルー ２７ｃ 第２のゲート ２８ 樹脂射出路 ２９ａ 第１の樹脂 ２９ｂ 第２の樹脂 1 Resin molded product 2 First resin part 3 Second resin part 4 core material 5 outer surface side 6 Back side 7 Adhesive layer 8 connection holes 10 Injection mold 11 cavity type 11a, 12a, 13a Mold surface 12 core type 13 Slide core type 14 cavities 14a First partial cavity 14b Second partial cavity 15 division planes 16 Holding recess 17 magnets 18, 24 Fluid pressure cylinder 20, 20a, 20b Resin injection nozzle 21,21a, 21b Resin supply path 22 Sprue switching block (resin flow path switching valve) 22c Sprue cavity side tip 23 sprue 23a First sprue 23b Second sprue 23c Sprue core side opening 25a, 25b band heater 26a First runner 26b Second runner 27a First gate 27b Third sprue 27c Second gate 28 Resin injection path 29a First resin 29b Second resin
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−189914（ＪＰ，Ａ) 特開 平５−21492（ＪＰ，Ａ) 特開 平６−278162（ＪＰ，Ａ) 特開 平７−60782（ＪＰ，Ａ) 特開 平７−304060（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 45/00 - 45/84 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-61-189914 (JP, A) JP-A-5-21492 (JP, A) JP-A-6-278162 (JP, A) JP-A-7- 60782 (JP, A) JP 7-304060 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) B29C 45/00-45/84
Claims (12)
るキャビティ型と、このキャビティ型との分割面を有す
るコア型、およびこのコア型内でキャビティ型側に前進
後退可能に設けられたスライドコア型との間に形成され
るキャビティ内に、スライドコア型が前進した位置で先
端部に、外形寸法がキャビティより小さい芯材を保持し
て前記型が閉じられた状態で、 スライドコア型の前進位置で形成される第１の部分キャ
ビティに第１の樹脂流路から第１のゲートを通して第１
の樹脂を射出して、成形品の外表面部を含む第１の樹脂
部を形成して芯材と一体化し、 芯材が第１の樹脂部に固着した段階でスライドコア型を
後退させて、スライドコア型と芯材との間に第２の部分
キャビティを形成し、 第２の部分キャビティに第２の樹脂流路から第２のゲー
トを通して第２の樹脂を射出して、成形品の裏面部を含
む第２の樹脂部を形成し、第１の樹脂部および芯材と一
体化させることにより芯材を埋込むことを特徴とする芯
材を有する樹脂成形品の製造方法。1. A cavity mold having a mold surface corresponding to the outer surface side of a molded product, a core mold having a dividing surface with the cavity mold, and a cavity mold inside the core mold that can move forward and backward toward the cavity mold side. In the cavity formed between the slide core mold and the slide core mold, the slide core is held closed at the tip of the slide core mold at the advanced position while holding the core material having an outer dimension smaller than the cavity. The first resin flow path passes through the first gate to the first partial cavity formed at the advance position of the mold.
Resin is injected to form the first resin part including the outer surface of the molded product and is integrated with the core material. When the core material is fixed to the first resin part, the slide core mold is retracted. A second partial cavity is formed between the slide core mold and the core member, and the second resin flow path is connected to the second gate in the second partial cavity .
A second resin is injected through the mold to form a second resin portion including the back surface of the molded product, and the core material is embedded by being integrated with the first resin portion and the core material. Of manufacturing a resin molded product having a core material to be used.
るキャビティ型と、このキャビティ型との分割面を有す
るコア型、およびこのコア型内でキャビティ型側に前進
後退可能に設けられたスライドコア型との間に形成され
るキャビティ内に、スライドコア型が前進した位置で先
端部に、外形寸法がキャビティより小さい芯材を保持し
て前記型が閉じられた状態で、 スライドコア型の前進位置で形成される第１の部分キャ
ビティに第１の樹脂流路から第１のゲートを通して第１
の樹脂を射出して、成形品の外表面部を含む第１の樹脂
部を形成して芯材と一体化し、 芯材が第１の樹脂部に固着した段階でスライドコア型を
後退させて、スライドコアと芯材との間に第２の部分キ
ャビティを形成しつつ、第２の部分キャビティに第２の
樹脂流路から第２のゲートを通して第２の樹脂を射出し
て、成形品の裏面部を含む第２の樹脂部を形成し、第１
の樹脂部および芯材と一体化させることにより芯材を埋
込むことを特徴とする芯材を有する樹脂成形品の製造方
法。2. A cavity mold having a mold surface corresponding to the outer surface side of the molded product, a core mold having a dividing surface with the cavity mold, and a cavity mold inside the core mold that can move forward and backward toward the cavity mold side. In the cavity formed between the slide core mold and the slide core mold, the slide core is held closed at the tip of the slide core mold at the advanced position while holding the core material having an outer dimension smaller than the cavity. The first resin flow path passes through the first gate to the first partial cavity formed at the advance position of the mold.
Resin is injected to form the first resin part including the outer surface of the molded product and is integrated with the core material. When the core material is fixed to the first resin part, the slide core mold is retracted. While forming the second partial cavity between the slide core and the core material, the second partial cavity is formed in the second partial cavity .
The second resin is injected from the resin flow path through the second gate to form the second resin portion including the back surface portion of the molded product, and the first resin
A method for producing a resin molded product having a core material, wherein the core material is embedded by being integrated with the resin part and the core material.
ある請求項１または２記載の方法。3. The method according to claim 1, wherein the first resin and the second resin are the same resin.
ある請求項１または２記載の方法。4. The method according to claim 1, wherein the first resin and the second resin are different resins.
の方法。5. The method according to claim 4, wherein the second resin is a recycled material.
出する際芯材をキャビティ型方向に押付ける方向に射出
する請求項１ないし５のいずれかに記載の方法。6. The method according to claim 1, wherein when the second resin is injected into the second partial cavity, the core material is injected in a direction in which the core material is pressed in the cavity mold direction.
るキャビティ型と、 このキャビティ型との分割面を有するコア型と、 このコア型内でキャビティ型側に対して前進後退可能に
設けられたスライドコア型と、 前記キャビティ型、コア型およびスライドコア型によっ
て形成されるキャビティよりも外形寸法の小さい芯材を
保持するように、スライドコア型の先端部に設けられた
芯材保持部と、 スライドコア型の前進位置で形成される第１の部分キャ
ビティに第１の樹脂を射出する第１の樹脂流路およびゲ
ートと、 第１の樹脂流路およびゲートとは異なる位置に設けら
れ、スライドコア型の後退位置で形成される第２の部分
キャビティに第２の樹脂を射出する第２の樹脂流路およ
びゲートと、 を有することを特徴とする芯材を有する樹脂成形品の製
造装置。7. A cavity mold having a mold surface corresponding to the outer surface side of a molded product, a core mold having a dividing surface for the cavity mold, and a forward and backward movement within the core mold with respect to the cavity mold side. A slide core mold provided, and a core material holder provided at the tip of the slide core mold so as to hold a core material having a smaller outer dimension than the cavity mold, the cavity formed by the core mold and the slide core mold. Section, a first resin flow path and a gate for injecting a first resin into a first partial cavity formed at a slide core type forward position, and a first resin flow path and a gate provided at different positions. And a second resin flow path for injecting the second resin into the second partial cavity formed at the retracted position of the slide core type, and a gate. Equipment for manufacturing shaped products.
請求項７記載の装置。8. The apparatus according to claim 7, wherein the core material holding portion includes a magnet that attracts the core material.
を含む請求項７記載の装置。9. The apparatus according to claim 7, wherein the core material holding portion includes a vacuum suction tool for suctioning the core material.
部に沿ってキャビティ型側に向けて突出する突部を含む
請求項７ないし９のいずれかに記載の装置。10. The apparatus according to claim 7, wherein the core material holding portion includes a protrusion protruding toward the cavity mold side along the outer peripheral edge portion of the core material to be held.
間にこれらの樹脂流路と択一的に連通する樹脂流路の切
替弁が設けられ、この切換弁が射出成形機側の１つの樹
脂供給路に接続している請求項７ないし１０のいずれか
に記載の装置。11. A resin flow path switching valve, which selectively communicates with the first resin flow path and the second resin flow path, is provided between the first resin flow path and the second resin flow path, and the switching valve is injection molded. The apparatus according to any one of claims 7 to 10, which is connected to one resin supply path on the machine side.
に独立していて、それぞれが独立した射出成形機側の別
の樹脂供給路と接続されている請求項７ないし１０のい
ずれかに記載の装置。12. The resin flow path according to claim 7, wherein the first resin flow path and the second resin flow path are both independent and are connected to another independent resin supply path on the injection molding machine side. The device according to any of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8016095A JP3531269B2 (en) | 1995-04-05 | 1995-04-05 | Method and apparatus for manufacturing resin molded article having core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8016095A JP3531269B2 (en) | 1995-04-05 | 1995-04-05 | Method and apparatus for manufacturing resin molded article having core material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08276463A JPH08276463A (en) | 1996-10-22 |
| JP3531269B2 true JP3531269B2 (en) | 2004-05-24 |
Family
ID=13710563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8016095A Expired - Fee Related JP3531269B2 (en) | 1995-04-05 | 1995-04-05 | Method and apparatus for manufacturing resin molded article having core material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3531269B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4341121B2 (en) * | 1999-11-08 | 2009-10-07 | パナソニック株式会社 | Molded product, molding method and housing |
| CN100515717C (en) | 1999-12-16 | 2009-07-22 | 第一精工株式会社 | Resin packaging method |
| JP4301707B2 (en) * | 2000-08-03 | 2009-07-22 | アロン化成株式会社 | Will |
| DE102006021938A1 (en) * | 2006-05-11 | 2007-11-15 | Robert Bosch Gmbh | Injection tool for producing connection plug board has slide in housing locking plug elements in plugged-in position |
| FR2967936B1 (en) | 2010-11-25 | 2014-05-09 | Faurecia Bloc Avant | METHOD FOR PRODUCING A REINFORCED STRUCTURAL PIECE OF A MOTOR VEHICLE |
| JP5926160B2 (en) * | 2012-10-12 | 2016-05-25 | 株式会社東海理化電機製作所 | Metal decoration manufacturing method and metal decoration |
-
1995
- 1995-04-05 JP JP8016095A patent/JP3531269B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08276463A (en) | 1996-10-22 |
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