JPH04173114A - Method and apparatus for manufacturing reinforced plastic molding - Google Patents
Method and apparatus for manufacturing reinforced plastic moldingInfo
- Publication number
- JPH04173114A JPH04173114A JP29850790A JP29850790A JPH04173114A JP H04173114 A JPH04173114 A JP H04173114A JP 29850790 A JP29850790 A JP 29850790A JP 29850790 A JP29850790 A JP 29850790A JP H04173114 A JPH04173114 A JP H04173114A
- Authority
- JP
- Japan
- Prior art keywords
- molding material
- mold
- molding
- mixing container
- synthetic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000002990 reinforced plastic Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 14
- 238000010137 moulding (plastic) Methods 0.000 title abstract 2
- 239000012778 molding material Substances 0.000 claims abstract description 65
- 238000002156 mixing Methods 0.000 claims abstract description 37
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 20
- 239000000057 synthetic resin Substances 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 238000004898 kneading Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000012779 reinforcing material Substances 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 abstract description 22
- 239000000463 material Substances 0.000 abstract description 17
- 238000002360 preparation method Methods 0.000 abstract description 4
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 description 8
- 230000006837 decompression Effects 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 101100326920 Caenorhabditis elegans ctl-1 gene Proteins 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、合成樹脂と繊維状強化材とからなる成形材料
によって強化プラスチック成形品を製造する方法及び装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for manufacturing reinforced plastic molded products using a molding material consisting of a synthetic resin and a fibrous reinforcement.
強化プラスチック（ＦＲＰ）成形品の製造方法の一つと
してＳ Ｍ Ｃ（Ｓｈｅｅｔ Ｍｏｌｄｉｎｇ Ｃｏｍ
ｐｏｕｎｄ）を使用する方法がある。SMC (Sheet Molding Com) is one of the manufacturing methods for reinforced plastic (FRP) molded products.
There is a method using ``pound''.
このＳＭＣは、１ ｉｎ〜２ｉｎ程度のガラス長繊維に
不飽和ポリエステル樹脂を含浸（ガラス繊維は１５％〜
３０％）させ、シート状に形成した成形材料である。製
造されたシート状成形材料は、化学的作用によって増粘
され、その両面をフィルムによって被覆してからロール
状に巻回され、この状態で素材メーカーから供給される
。This SMC is made by impregnating 1 inch to 2 inch long glass fibers with unsaturated polyester resin (glass fibers are 15% to 2 inches long).
30%) and formed into a sheet shape. The manufactured sheet-shaped molding material is thickened by chemical action, both sides of which are covered with a film, and then wound into a roll, and supplied in this state from a material manufacturer.
成形メーカーでは、供給されたシート状成形材料を金型
のキャビティ形状に合わせて適当な長さに切断し、フィ
ルムを剥がしてキャビティ内に載置或いは必要に応じて
複数枚積層する。シート状成形材料は、金型によって１
４０″Ｃ程度、３０ｋｇ／ｃｒｌ〜１００ ｋｇ／ｃｒ
Ｉ程度に加熱加圧されて軟化し、流動状態となってキャ
ビティ全体に充満し、硬化温度に達すると硬化する。所
定の硬化時間が経過した後、型開きしてプラスチック成
形品を取出す。The molding manufacturer cuts the supplied sheet-shaped molding material into an appropriate length to match the shape of the mold cavity, peels off the film, and places it inside the cavity, or laminates multiple sheets as necessary. The sheet-shaped molding material is
About 40″C, 30kg/crl~100kg/cr
It is heated and pressurized to about I, softens it, becomes fluid, fills the entire cavity, and hardens when it reaches the curing temperature. After a predetermined curing time has elapsed, the mold is opened and the plastic molded product is taken out.
このＳＭＣ法によれば、素材メーカーからシート状成形
材料が予め完成状態で供給されるので、成形メーカーで
は金型設備を導入するだけで、強化プラスチック成形品
を製造することができる。According to this SMC method, the sheet-shaped molding material is supplied in advance from the material manufacturer in a completed state, so that the molding manufacturer can manufacture reinforced plastic molded products simply by installing mold equipment.
しかしながら、上述のシート状成形材料は、ガラス繊維
に樹脂を含浸させた状態で既に材料内部に空気が混入し
ている。また、シート状成形材料を金型のキャビティ内
に挿入する際に、キャビテイ面とシート状成形材料との
隙間、及び積層された複数枚のシート状成形材料の隙間
にも空気が入る。そして、このような混入空気は、成形
される強化プラスチックの内部で気泡となって製品の強
度を劣化させ、また表面の塗装時にピンホールとなって
製品の体裁を悪化させる、等の原因となっていた。However, in the above-mentioned sheet-shaped molding material, air is already mixed inside the material in a state where the glass fibers are impregnated with resin. Further, when inserting the sheet-like molding material into the cavity of the mold, air also enters the gap between the cavity surface and the sheet-like molding material and the gap between the plurality of laminated sheet-like molding materials. This type of air can form bubbles inside the reinforced plastic that is being molded, deteriorating the strength of the product, and can also cause pinholes to form when the surface is painted, deteriorating the appearance of the product. was.
このようなことから、ＳＭＣ法においては、金型による
成形の際、シート状成形材料の内部から混入空気を抜く
ために、或いはその気泡を極力小さく抑えるために、成
形材料に成形圧力よりもさらに大きな圧力（３０ｋｇ／
ＣＴｌ１〜１００ ｋｇ／ａｌｌ）を加える必要があっ
た。このため、成形メーカーが導入すべき金型設備は、
強度、構造及び材質等の面から、大型でかつ高価になら
ざるを得ないという問題があった。For this reason, in the SMC method, when molding with a mold, the molding material is applied with even more pressure than the molding pressure in order to remove air mixed in from inside the sheet-like molding material or to suppress the air bubbles as small as possible. Big pressure (30kg/
It was necessary to add CTl1 to 100 kg/all). For this reason, the mold equipment that molding manufacturers should introduce is
In terms of strength, structure, material, etc., there was a problem in that it had to be large and expensive.
なお最近では、金型を型締めした後にキャビティ内を真
空吸引して、キャビテイ面とシート状成形材料との隙間
、及び積層された複数枚のシート状成形材料の隙間に存
在する空気を抜くことも行われているが、材料内部の混
入空気を抜くことはできない。Recently, after the mold is clamped, the inside of the cavity is vacuum-suctioned to remove the air present in the gap between the cavity surface and the sheet-shaped molding material, and in the gap between the laminated sheets of molding material. However, it is not possible to remove the air trapped inside the material.
また、ＳＭＣ法においては、素材メーカーでシート状成
形材料を製造した後、そのシート状成形材料が柔らかい
ままであると、樹脂の比重とガラス繊維の比重との差に
よって画素材の分布状態が悪くなり、また素材メーカー
から成形メーカーへの輸送も不便になるので、製造後は
シート状成形材料を増粘させて硬くしている。In addition, in the SMC method, if the sheet-shaped molding material remains soft after it is manufactured by a material manufacturer, the distribution of the image material will be poor due to the difference between the specific gravity of the resin and the specific gravity of the glass fiber. This also makes transportation from the material manufacturer to the molding manufacturer inconvenient, so after manufacturing, the sheet-shaped molding material is thickened to make it harder.
このため、成形メーカーでは、金型による成形の前に、
予めシート状成形材料をある程度軟化させる必要があっ
た。また、金型のキャビティ形状に対応させて、シート
状成形材料を切断したり複数枚積層したりする作業が必
要があった。従って、成形工程の前に煩わしい準備工程
が加わるという問題もあった。For this reason, molding manufacturers have to
It was necessary to soften the sheet-shaped molding material to some extent in advance. In addition, it was necessary to cut the sheet-like molding material or stack a plurality of sheets in accordance with the shape of the mold cavity. Therefore, there is also the problem that a troublesome preparation process is added before the molding process.
そこで本発明は、上述したような問題点を解消するため
になされたものであって、成形材料に大きな圧力を加え
る必要がなく、しかも成形前に面倒な準備作業を行うこ
となく強化プラスチック成形品を製造することができる
方法及び装置を提供することを目的とする。Therefore, the present invention was made to solve the above-mentioned problems, and it is possible to produce reinforced plastic molded products without applying large pressure to the molding material and without having to perform troublesome preparation work before molding. An object of the present invention is to provide a method and apparatus capable of manufacturing.
上記目的を達成するために、本発明は、合成樹脂と繊維
状強化材とからなる成形材料を金型内に供給し、その金
型により前記成形材料を加熱加圧して所定形状に成形す
るようにした強化プラスチック成形品の製造方法におい
て、合成樹脂と繊維状強化材とを減圧環境下に置かれた
混合容器内で混練して成形材料を生成し、この成形材料
を前記混合容器内から押し出して前記金型内に注入する
ものである。In order to achieve the above object, the present invention supplies a molding material made of a synthetic resin and a fibrous reinforcing material into a mold, and heats and presses the molding material with the mold to mold it into a predetermined shape. In the method for manufacturing a reinforced plastic molded article, a synthetic resin and a fibrous reinforcement are kneaded in a mixing container placed in a reduced pressure environment to produce a molding material, and this molding material is extruded from the mixing container. and then injected into the mold.
また、本発明による強化プラスチック成形品の製造装置
は、減圧環境下に設置されて合成樹脂と繊維状強化材と
が投入される混合容器と、この混合容器内で前記合成樹
脂と前記繊維状強化材とを混練する攪拌部材と、その混
練により生成された成形材料を前記混合容器内から押し
出す押出部材と、前記混合容器に接続されて前記押し出
された成形材料を外部へ送出する供給管と、この供給管
により注入された前記成形材料を加熱加圧して所定形状
に成形する金型とからなるものである。Further, the manufacturing apparatus for a reinforced plastic molded product according to the present invention includes a mixing container installed in a reduced pressure environment into which a synthetic resin and a fibrous reinforcing material are charged, and a mixing container in which the synthetic resin and the fibrous reinforcing material are mixed together in the mixing container. a stirring member for kneading the materials, an extrusion member for extruding the molding material produced by the kneading from within the mixing container, and a supply pipe connected to the mixing container for sending the extruded molding material to the outside; It consists of a mold that heats and presses the molding material injected through the supply pipe to mold it into a predetermined shape.
なお、前記装置において、前記供給管の先端の注入ノズ
ルを前記金型のキャビティ形成用凹部に対応させて移動
させる移動手段を設けるとよい。In the apparatus, it is preferable to provide a moving means for moving the injection nozzle at the tip of the supply pipe so as to correspond to the cavity forming recess of the mold.
上記のように構成された本発明によれば、減圧環境下の
混合容器内で合成樹脂と繊維状強化材とを混練するので
、その混純によって生成される成形材料は、内部に混入
空気が殆どない脱気されたものとなる。そして、混練さ
れた成形材料を混合容器内から押し出して金型に直接注
入するので、その注入時の空気混入も極力防止される。According to the present invention configured as described above, the synthetic resin and the fibrous reinforcing material are kneaded in a mixing container under a reduced pressure environment, so that the molding material produced by the kneading has no air mixed inside. It will be degassed with almost no air. Since the kneaded molding material is extruded from the mixing container and directly injected into the mold, air intrusion during injection is also prevented as much as possible.
従って、金型による成形時に、成形材料に成形圧力より
もさらに大きな脱気のための圧力を加える必要がない。Therefore, during molding with a mold, there is no need to apply pressure for degassing that is greater than the molding pressure to the molding material.
また、混練された成形材料は軟化状態で金型に直接注入
されるので、成形前に成形材料を必要以上に軟化させな
くてもよく、しかも成形材料を金型のキャビティ形状に
対応させて注入することができる。In addition, since the kneaded molding material is directly injected into the mold in a softened state, there is no need to soften the molding material more than necessary before molding, and the molding material is injected in a manner that corresponds to the shape of the mold cavity. can do.
以下、本発明の一実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
まず、第１図及び第２図に示すように、合成樹脂と繊維
状強化材との混練は、所望の減圧状態を設定し得る減圧
室１内において行われる。この減圧室１内には、鉄、ア
ルミニウム、ステンレス等によって円筒状に形成された
混合容器２が設置されている。First, as shown in FIGS. 1 and 2, the synthetic resin and the fibrous reinforcing material are kneaded in a vacuum chamber 1 in which a desired vacuum state can be set. A cylindrical mixing container 2 made of iron, aluminum, stainless steel, or the like is installed in the decompression chamber 1 .
そして混合容器２内には、第１図に示すように、へら状
の攪拌部材３が回転かつ上下動自在に挿入される。また
混合容器２内には、第２図に示すように、ピストンから
なる押出部材４が上下動自在に挿入される。As shown in FIG. 1, a spatula-shaped stirring member 3 is inserted into the mixing container 2 so as to be rotatable and movable up and down. Further, as shown in FIG. 2, an extrusion member 4 consisting of a piston is inserted into the mixing container 2 so as to be movable up and down.
混合容器２の下部には供給管５が接続され、この供給管
５は減圧室１の外部に導出されてバルブ６が設けられて
いる。そして、バルブ６から先の供給管５は可撓性を有
し、第３図に示すように圧縮成形用の金型１０まで延長
され、その先端が注入ノズル７となっている。A supply pipe 5 is connected to the lower part of the mixing container 2, and this supply pipe 5 is led out to the outside of the decompression chamber 1 and is provided with a valve 6. The supply pipe 5 from the valve 6 is flexible and extends to a compression mold 10, as shown in FIG. 3, and has an injection nozzle 7 at its tip.
次に、第３図に示すように、上記金型１０は上型１１と
下型１２とによって構成され、それぞれキャビティ形成
用の凸部１１ａ及び凹部１２ａが設けられている。なお
第４図にも示すように、本例では、凹部１２ａによって
形成されるキャビティは、環状で幅及び深さも異なって
いる。Next, as shown in FIG. 3, the mold 10 is composed of an upper mold 11 and a lower mold 12, each of which is provided with a convex portion 11a and a concave portion 12a for forming a cavity. As shown in FIG. 4, in this example, the cavities formed by the recesses 12a are annular and have different widths and depths.
なお、前記供給管５の先端の注入ノズル７は移動手段８
に取付けられており、その移動手段８よって注入ノズル
７は上記凹部１２ａに対応して移動されるように構成さ
れている。Note that the injection nozzle 7 at the tip of the supply pipe 5 is connected to a moving means 8.
The moving means 8 moves the injection nozzle 7 corresponding to the recess 12a.
次に、上述のように構成された製造装置による強化プラ
スチック成形品の製造方法について説明する。Next, a method for manufacturing a reinforced plastic molded product using the manufacturing apparatus configured as described above will be described.
まず、第１図に示すように、減圧された減圧室■内にお
いて、混合容器２の中に、例えばポリエステル樹脂等の
熱硬化性合成樹脂２１と、繊維状強化材であるガラス繊
維２２と、硬化材等の適宜な副素材とを投入する。なお
減圧室１の減圧程度は、必ずしも真空でなくてもよく、
各素材の種類や投入量等によって最適値に設定する。First, as shown in FIG. 1, in a reduced pressure chamber 2, a thermosetting synthetic resin 21 such as polyester resin, and glass fiber 22 as a fibrous reinforcing material are placed in a mixing container 2. Add appropriate auxiliary materials such as hardening material. Note that the degree of depressurization in the decompression chamber 1 does not necessarily have to be a vacuum;
Set the optimum value depending on the type of each material and the input amount.
そして、混合容器２内で攪拌部材３を回転させつつ上下
動させ、上記各素材を充分に混練する。Then, the stirring member 3 is rotated and moved up and down within the mixing container 2 to sufficiently knead the above-mentioned materials.
なお混合容器２を回転させてもよい。このように、混練
を減圧環境下で行うことによって、合成樹脂２１とガラ
ス繊維２２とからなる成形材料２３は、内部に混入空気
が殆どない脱気されたものとなる。Note that the mixing container 2 may be rotated. By performing the kneading in a reduced pressure environment in this manner, the molding material 23 made of the synthetic resin 21 and the glass fibers 22 becomes deaerated with almost no air mixed inside.
次に、第２図に示すように、混合容器２内からから攪拌
部材３を引き上げ、その混合容器２内に押出部材４を挿
入し、バルブ６を解放してから押出部材４を下降させる
。混合容器２はシリンダとして機能し、成形材料２３は
混合容器２内から押し出されて供給管５により外部へ送
出される。成形材料２３は軟化状態にあるので、ある程
度の粘度調整は必要だが、必要以上に軟化させなくても
よい。Next, as shown in FIG. 2, the stirring member 3 is pulled up from inside the mixing container 2, the pushing member 4 is inserted into the mixing container 2, the valve 6 is released, and the pushing member 4 is lowered. The mixing container 2 functions as a cylinder, and the molding material 23 is pushed out from inside the mixing container 2 and delivered to the outside through the supply pipe 5. Since the molding material 23 is in a softened state, it is necessary to adjust the viscosity to some extent, but it is not necessary to soften it more than necessary.
第３図に示すように、移動手段８によって注入ノズル７
が下型１２の凹部１２ａに沿って移動され、その凹部１
２ａに成形材料２３が注入される。As shown in FIG.
is moved along the recess 12a of the lower mold 12, and the recess 1
Molding material 23 is injected into 2a.
この際、本実施例によれば、押出部材４がピストンによ
って構成され、注入ノズル７が移動手段８によって移動
自在に構成されているので、第３図及び第４図に示すよ
うに、幅及び厚さが一定でない製品を成形する場合でも
、押出部材４の下降速度の調整や注入ノズル７の移動速
度の調整、さらに第４図に矢印線で示すような注入ノズ
ル７の移動経路の調整によって、成形材料２３の注入量
を凹部１２ａの形状に応じて自在に変更することができ
る。さらに、第４図に示すような環状の製品は、従来、
成形材料注入の自動化が難しかったが、本実施例によれ
ば、注入ノズル７の移動によって最適な充填バクーンの
設定を自動的に行うことができる。At this time, according to this embodiment, the extrusion member 4 is constituted by a piston, and the injection nozzle 7 is configured to be movable by the moving means 8, so that the width and the Even when molding a product whose thickness is not constant, it is possible to adjust the descending speed of the extrusion member 4, the moving speed of the injection nozzle 7, and the moving path of the injection nozzle 7 as shown by the arrow line in Fig. 4. , the injection amount of the molding material 23 can be freely changed depending on the shape of the recess 12a. Furthermore, the annular product as shown in Fig. 4 has conventionally been
Although it has been difficult to automate the injection of molding material, according to this embodiment, by moving the injection nozzle 7, it is possible to automatically set the optimum filling bag.
所定量の成形材料２３を凹部１２ａ内に注入した後、上
下型１０．１１を型締めし、成形材料２３を加熱加圧す
ることによって、所定形状の強化プラスチック成形品が
成形される。前述したように、成形材料２３は脱気され
ているので、金型１０による成形の際、成形材料２３に
成形圧力よりもさらに大きな脱気のための圧力を加える
必要がない。なお、成形材料２３を混合容器２内から押
し出して下型１２の凹部１２ａに直接注入するので、そ
の注入過程で成形材料２３に空気が混入することも極力
防止される。After a predetermined amount of the molding material 23 is injected into the recess 12a, the upper and lower molds 10.11 are clamped, and the molding material 23 is heated and pressurized to mold a reinforced plastic molded product of a predetermined shape. As described above, since the molding material 23 has been deaerated, there is no need to apply a pressure greater than the molding pressure to the molding material 23 during molding using the mold 10 for degassing. In addition, since the molding material 23 is extruded from the mixing container 2 and directly injected into the recess 12a of the lower mold 12, it is possible to prevent air from entering the molding material 23 during the injection process.
以上、本発明の一実施例に付き説明したが、本発明は実
施例に限定されることなく、本発明の技術的思想に基づ
いて各種の有効な変更が可能である。Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various effective changes can be made based on the technical idea of the present invention.
例えば、減圧環境下の混合容器内で合成樹脂と繊維状強
化材とを混練した後、その混合容器を金型の近傍へ搬送
してもよい。また、注入ノズルの移動は手動により行っ
てもよい。For example, the synthetic resin and the fibrous reinforcing material may be kneaded in a mixing container under reduced pressure, and then the mixing container may be transported to the vicinity of the mold. Furthermore, the injection nozzle may be moved manually.
なお、熱硬化性の合成樹脂としては、ポリエステル樹脂
の他、エポキシ樹脂やフェノール樹脂等、各種の合成樹
脂を用いることができる。また、繊維状強化材としても
、ガラス繊維以外に各種の強比相を用いることができる
。In addition, as the thermosetting synthetic resin, various synthetic resins such as epoxy resin and phenol resin can be used in addition to polyester resin. Further, as the fibrous reinforcing material, various strong phase materials other than glass fiber can be used.
以上説明したように、本発明によれば、合成樹脂と繊維
状強化材とを減圧環境下で混練することによって、内部
に混入空気が殆どない脱気された成形材料を得ることが
できる。しかも、混練された成形材料を混合容器内から
押し出して金型に直接注入するので、その注入時の空気
混入も極力防止することができる。従って、金型による
成形時に、従来のように成形材料に成形圧力よりもさら
に大きな脱気のための圧力を加える必要がないので、強
度、構造及び材質等の面から、導入すべき金型設備を簡
素でかつ安価なものとすることができ、ひいては、製造
される強化プラスチック成形品の大幅な低コスト化を図
ることができる。As explained above, according to the present invention, by kneading a synthetic resin and a fibrous reinforcing material in a reduced pressure environment, it is possible to obtain a deaerated molding material containing almost no air mixed therein. Furthermore, since the kneaded molding material is extruded from the mixing container and directly injected into the mold, air intrusion during injection can be prevented as much as possible. Therefore, when molding with a mold, there is no need to apply a pressure greater than the molding pressure to the molding material for degassing as in the past, so mold equipment that should be introduced from the viewpoints of strength, structure, material, etc. can be made simple and inexpensive, and as a result, the cost of the manufactured reinforced plastic molded product can be significantly reduced.
また、混練された成形材料を軟化状態で金型に直接注入
することができるので、成形前に成形材料を必要以上に
軟化させることなく、しかも成形材料をキャビティ形状
に対応させて注入することができる。従って、成形工程
の前の煩わしい準備 。In addition, since the kneaded molding material can be directly injected into the mold in a softened state, the molding material can be injected in a manner that corresponds to the cavity shape without unnecessarily softening the molding material before molding. can. Therefore, cumbersome preparation before the molding process.
工程を削減することができ、成形効率の大幅な向上を図
ることができる。The number of steps can be reduced and molding efficiency can be significantly improved.
図面は本発明の一実施例を示すものであって、第１図は
混合容器内での成形材料の混練を示す縦断面図、第２図
は混合容器内からの成形材料の押し出しを示す縦断面図
、第３図は金型内への成形材料の注入を示す縦断面図、
第４図は下型の平面図である。
なお、図面に用いた符号において、
１・・・・・・・・・・・・・・・減圧室２・・・・・
・・・・・・・・・・混合容器３・・・・・・・・・・
・・・・・攪拌部材４・・・・・・・・・・・・・・・
押出部材５・・・・・・・・・・・・・・・供給管７・
・・・・・・・・・・・・・・注入ノズル８・・・・・
・・・・・・・・・・移動手段１０・・・・・・・・・
・・・・・・金型１１・・・・・・・・・・・・・・・
上型１２・・・・・・・・・・・・・・・下型１２ａ・
・・・・・・・・・・・凹部
２１・・・・・・・・・・・・・・・合成樹脂２２・・
・・・・・・・・・・・・・ガラス繊維（繊維状強化材
）２３・・・・・・・・・・・・・・・成形材料である
。The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal cross-sectional view showing the kneading of the molding material in the mixing container, and FIG. 2 is a longitudinal cross-sectional view showing the extrusion of the molding material from the mixing container. A top view, FIG. 3 is a longitudinal sectional view showing injection of molding material into the mold,
FIG. 4 is a plan view of the lower mold. In addition, in the symbols used in the drawings, 1...... Decompression chamber 2...
・・・・・・・・・Mixing container 3・・・・・・・・・・・・
・・・・・・Stirring member 4・・・・・・・・・・・・・・・
Extrusion member 5...... Supply pipe 7.
・・・・・・・・・・・・・・・Injection nozzle 8・・・・・・
・・・・・・・・・Transportation means 10・・・・・・・・・
・・・・・・Mold 11・・・・・・・・・・・・・・・
Upper mold 12・・・・・・・・・・・・Lower mold 12a・
・・・・・・・・・・・・Concavity 21・・・・・・・・・・・・Synthetic resin 22...
......Glass fiber (fibrous reinforcing material) 23 ...... Molding material.
Claims (3)
型内に供給し、その金型により前記成形材料を加熱加圧
して所定形状に成形するようにした強化プラスチック成
形品の製造方法において、合成樹脂と繊維状強化材とを
減圧環境下に置かれた混合容器内で混練して成形材料を
生成し、この成形材料を前記混合容器内から押し出して
前記金型内に注入する、 ことを特徴とする強化プラスチック成形品の製造方法。(1) A method for manufacturing a reinforced plastic molded product, in which a molding material consisting of a synthetic resin and a fibrous reinforcing material is supplied into a mold, and the molding material is heated and pressurized by the mold to be molded into a predetermined shape. A synthetic resin and a fibrous reinforcing material are kneaded in a mixing container placed in a reduced pressure environment to produce a molding material, and this molding material is extruded from the mixing container and injected into the mold. A method for manufacturing a reinforced plastic molded product, characterized by:
とが投入される混合容器と、 この混合容器内で前記合成樹脂と前記繊維状強化材とを
混練する攪拌部材と、 その混練により生成された成形材料を前記混合容器内か
ら押し出す押出部材と、 前記混合容器に接続されて前記押し出された成形材料を
外部へ送出する供給管と、 この供給管により注入された前記成形材料を加熱加圧し
て所定形状に成形する金型と、 からなる強化プラスチック成形品の製造装置。(2) a mixing container installed in a reduced pressure environment into which the synthetic resin and the fibrous reinforcing material are charged; a stirring member for kneading the synthetic resin and the fibrous reinforcing material in the mixing container; and the kneading member. an extrusion member that extrudes the molding material produced by the mixing container from inside the mixing container; a supply pipe connected to the mixing container to send the extruded molding material to the outside; and a supply pipe that extrudes the molding material injected through the supply pipe. A device for manufacturing reinforced plastic molded products, consisting of a mold that is heated and pressurized to form a predetermined shape.
ビティ形成用凹部に対応させて移動させる移動手段を設
けたことを特徴とする請求項２記載の強化プラスチック
成形品の製造装置。(3) The apparatus for manufacturing a reinforced plastic molded product according to claim 2, further comprising a moving means for moving the injection nozzle at the tip of the supply pipe so as to correspond to the cavity forming recess of the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29850790A JPH04173114A (en) | 1990-11-02 | 1990-11-02 | Method and apparatus for manufacturing reinforced plastic molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29850790A JPH04173114A (en) | 1990-11-02 | 1990-11-02 | Method and apparatus for manufacturing reinforced plastic molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04173114A true JPH04173114A (en) | 1992-06-19 |
Family
ID=17860613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29850790A Pending JPH04173114A (en) | 1990-11-02 | 1990-11-02 | Method and apparatus for manufacturing reinforced plastic molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04173114A (en) |
-
1990
- 1990-11-02 JP JP29850790A patent/JPH04173114A/en active Pending
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