JPS62249721A - Apparatus for producing arc-shaped hollow plastics component - Google Patents
Apparatus for producing arc-shaped hollow plastics componentInfo
- Publication number
- JPS62249721A JPS62249721A JP9412786A JP9412786A JPS62249721A JP S62249721 A JPS62249721 A JP S62249721A JP 9412786 A JP9412786 A JP 9412786A JP 9412786 A JP9412786 A JP 9412786A JP S62249721 A JPS62249721 A JP S62249721A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding
- movable
- arc
- 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.)
- Pending
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 33
- 229920003023 plastic Polymers 0.000 title claims abstract description 33
- 238000000465 moulding Methods 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229920001778 nylon Polymers 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/261—Moulds having tubular mould cavities
- B29C45/2614—Moulds having tubular mould cavities for manufacturing bent tubular articles using an undercut forming mould core
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は例えばエンジンの吸気マニホールドのような円
弧状中空プラスチック部品の製造装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for manufacturing arcuate hollow plastic parts, such as an intake manifold for an engine.
（従来技術）
従来、自動車用エンジンの吸気マニホールドは一般に鋳
鉄などを鋳造することにより製造されて来たが、鋳造品
の吸気マニホールドでは鋳造成形面が粗くなりがちで吸
気抵抗も大きくなるなどの問題がある。(Prior art) In the past, intake manifolds for automobile engines have generally been manufactured by casting cast iron, etc. However, with cast intake manifolds, there are problems such as the casting surface tends to be rough and the intake resistance increases. There is.
そこで、最近では吸気抵抗の低減と軽量化と低コスト化
を図るため、フェノール系合成樹脂などの合成樹脂材料
で上記吸気マニホールドを成形することが提案されてい
る。Therefore, in order to reduce intake resistance, weight, and cost, it has recently been proposed to mold the intake manifold from a synthetic resin material such as a phenolic synthetic resin.
ところで、上記吸気マニホールドの如く弯曲状中・空部
を有するプラスチック部品を１対の金型と中子とで一体
成形することは一般には困難である。By the way, it is generally difficult to integrally mold a plastic part having a curved hollow part, such as the above-mentioned intake manifold, using a pair of molds and a core.
そこで、実開昭５６−１１７０４７号公報には、エンジ
ンの吸気マニホールドの吸気流入ポート部と複数の分岐
管とを上下２分割して成形し、上記両分割体を接合する
ことにより吸気マニホールドを製作する技術が記載され
ている。Therefore, in Japanese Utility Model Application Publication No. 56-117047, the intake manifold is fabricated by molding the intake inflow port of the engine intake manifold and a plurality of branch pipes into upper and lower halves, and joining the two halves together. The technology to do so is described.
これに対して、上記弯曲状中空部を有するプラスチック
部品を成形するときの中子として公知の低融点金属製中
子を用いれば、上記プラスチック部品を一体成形するこ
とも可能である（特開昭５８−８２０５９号公報参照）
。On the other hand, if a core made of a well-known low-melting point metal is used as a core for molding the above-mentioned plastic part having a curved hollow part, it is possible to integrally mold the above-mentioned plastic part. (Refer to Publication No. 58-82059)
.
（発明が解決しようとする問題点）
上記公報に記載された吸気マニホールドの製造技術にお
いては、吸気マニホールドを上下１対の分割体として成
形し、両分割体を接着などで接合するので、金型の数が
多くなること、成形工程が増えること、１対の分割体を
接合する工程が増えコストアップになること、分割体の
接合部が平滑な面とならないので吸気通路の抵抗が十分
に低減しないことなどの問題がある。(Problems to be Solved by the Invention) In the intake manifold manufacturing technology described in the above publication, the intake manifold is molded as a pair of upper and lower parts, and the two parts are joined by adhesive etc. The number of parts increases, the molding process increases, the process of joining a pair of divided bodies increases, which increases costs, and the joints of the divided bodies do not have smooth surfaces, so the resistance of the intake passage is sufficiently reduced. There are problems such as not doing so.
これに対して、弯曲状中空部や円弧状中空部を有するプ
ラスチック部品を成形するのに低融点金属中子を用いる
場合には、低融点金属中子は成形後溶融させて取出すの
で、中子の鋳造工程と中子の溶融除去工程が必要となる
こと、短時間で中子を溶融除去して回収することが難し
いこと、全体として多くの工程と多数の装置が必要とな
って製造コストが非常に高価になり量産性に欠けること
などの問題がある。On the other hand, when a low melting point metal core is used to mold a plastic part that has a curved hollow part or an arcuate hollow part, the low melting point metal core is melted and taken out after molding. It is difficult to melt and remove the core in a short time and recover it in a short period of time, and overall, many processes and equipment are required, which increases manufacturing costs. There are problems such as being very expensive and lacking in mass production.
（問題点を解決するための手段）
本発明に係る円弧状中空プラスチック部品の製造装置は
、円弧状の中空部を有するプラスチック部品を製造する
製造装置において、上記プラスチック部品の一方の側の
外形を成形する外形成形用型部を有する固定型を設け、
上記プラスチック部品の他方の側の外形を成形する外形
成形用型部を有し上記固定型に対向状に配設され上記固
定型に当接する位置と離反した位置とに駆動される可動
型を設け、上記プラスチック部品の円弧状中空部を成形
する為の円弧状中子としてのスイングコアであって、上
記固定型の外形成形用型部と可動型の外形成形用型部と
で形成される空洞部内に円弧方向にスイングさせること
により挿入及び抜取り可能なスイングコアを設けたもの
である。(Means for Solving the Problems) An apparatus for manufacturing an arc-shaped hollow plastic part according to the present invention is a manufacturing apparatus for manufacturing a plastic part having an arc-shaped hollow part. A fixed mold having a mold part for an external shape to be molded is provided,
A movable mold is provided, which has an outer forming mold part for molding the outer shape of the other side of the plastic part, and is disposed opposite to the fixed mold and is driven between a position in contact with the fixed mold and a position away from the fixed mold. , a swing core serving as an arcuate core for molding the arcuate hollow part of the plastic part, the cavity being formed by the fixed outer forming mold part and the movable outer forming mold part; A swing core that can be inserted and extracted by swinging in an arcuate direction is provided within the section.
（作用）
本発明に係る円弧状中空プラスチック部品の製造装置に
おいては、固定型と可動型とを当接状態にし、固定型の
外形成形用型部と可動型の外形成形用型部とで形成され
る空洞部内に円弧状中子としてのスイングコアを円弧方
向にスイングさせることにより挿入した状態で両外形成
形用型部とスイングコアとで形成された成形キャビティ
内に溶融した合成樹脂材料を射出すると、円弧状中空部
を有するプラスチック部品が成形されることになる。(Function) In the apparatus for manufacturing arc-shaped hollow plastic parts according to the present invention, the fixed mold and the movable mold are brought into contact with each other, and the mold part for external forming of the fixed mold and the mold part for external forming of the movable mold form the parts. A swing core serving as an arc-shaped core is inserted into the cavity by swinging in an arc direction, and a molten synthetic resin material is injected into a molding cavity formed by both outer forming mold parts and the swing core. Then, a plastic part having an arc-shaped hollow part is molded.
このとき、プラスチック部品の一方の側の外形が固定型
の外形成形用型部で成形され、また他方の側の外形が可
動型の外形成形用型部で成形され、また円弧状中空部の
内面がスイングコアで成形される。At this time, the outer shape of one side of the plastic part is molded by the fixed outer forming mold part, the outer shape of the other side is molded by the movable outer forming mold part, and the inner surface of the arcuate hollow part. is formed with a swing core.
上記のように成形後、固定型と可動型とを離反させる前
に或いは離反させてから、スイングコアを円弧方向へス
イングさせることによりスイングコアを成形品から抜き
取ることが出来る。After molding as described above, the swing core can be removed from the molded product by swinging the swing core in an arcuate direction before or after separating the fixed mold and the movable mold.
（発明の効果）
本発明に係る円弧状中空プラスチック部品の製造装置に
よれば、以上説明したように固定型と可動型とスイング
コアとからなる簡単な構成でもって、円弧状中空部を有
するプラスチック部品を一体成形することが出来る。(Effects of the Invention) According to the apparatus for manufacturing arc-shaped hollow plastic parts according to the present invention, as explained above, with a simple structure consisting of a fixed mold, a movable mold, and a swing core, a plastic part having an arc-shaped hollow part can be manufactured. Parts can be integrally molded.
（実施例） 以下、本発明の実施例を図面に基いて説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
本実施例における円弧状中空プラスチック部品の製造装
置は、各種のプラスチック材料を射出成形して円弧状中
空部を有するプラスチック部品（以下、成形品という）
を成形する射出成形装置であり、第１図に示すようにこ
の射出成形装置Ｍはプラスチック原料を溶融させた状態
で加圧射出する射出装置ｌと射出されたプラスチック材
料を成形する成形装置２とから構成されるものである。The apparatus for manufacturing arc-shaped hollow plastic parts in this embodiment is a plastic part (hereinafter referred to as a molded product) having an arc-shaped hollow part made by injection molding various plastic materials.
As shown in Fig. 1, this injection molding device M includes an injection device 1 that pressurizes and injects a molten plastic material, and a molding device 2 that molds the injected plastic material. It consists of:
上記射出装置ｌは、通常の射出成形装置に用いられてい
るものと同様のものなので、詳しい説明は省略する。The injection device 1 described above is similar to that used in a normal injection molding device, so a detailed description thereof will be omitted.
上記成形装置２は、固定盤３と、その盤面に４組のクラ
ンプ７で取付けられた固定金型４と、固定盤３の後方に
対向するように配設された可動盤５と、固定金型４に対
向するように可動盤５の盤面に４組のクランプ７で取付
けられた可動金型６と、可動金型６に装着されたスイン
グコア８及びスイング機構９と、可動盤５を前後方向に
進退駆動する油圧式の主シリンダ１０と、可動盤５を案
内する４本のガイドロッド１１と、成形品をエジェクト
するエジェクト機構などを備えている。The molding device 2 includes a fixed platen 3, a fixed mold 4 attached to the platen surface with four sets of clamps 7, a movable platen 5 disposed opposite to the rear of the fixed platen 3, and a fixed mold 4 attached to the platen surface with four sets of clamps 7. A movable mold 6 is attached to the surface of the movable platen 5 with four sets of clamps 7 so as to face the mold 4, a swing core 8 and a swing mechanism 9 are attached to the movable mold 6, and the movable platen 5 is moved back and forth. It is equipped with a hydraulic main cylinder 10 that moves forward and backward in the direction, four guide rods 11 that guide the movable platen 5, and an eject mechanism that ejects the molded product.
上記ガイドロッド１１は主シリンダ１０のフランジ部と
固定盤３とに亙って架着され、各ガイドロッド１１を可
動盤５の各隅部に摺動自在に挿通させることにより可動
盤５は前後方向に移動自在にガイドロッド１１に支持さ
れ、主シリンダ１０のラム１０ａの前端部が可動盤５の
後面中央部に固着され、上記主シリンダ１０によって可
動盤５を前後に所定ストローク進退駆動させることによ
り、可動金型６を固定金型４に当接させた成形位置と可
動金型６を後方へ退かせたエジェクト位置とに可動金型
６を移動し得るようになっている。The guide rods 11 are mounted between the flange of the main cylinder 10 and the fixed platen 3, and each guide rod 11 is slidably inserted into each corner of the movable platen 5, so that the movable platen 5 can be moved forward and backward. The front end of the ram 10a of the main cylinder 10 is fixed to the center of the rear surface of the movable platen 5, and the main cylinder 10 drives the movable platen 5 back and forth by a predetermined stroke. As a result, the movable mold 6 can be moved between a molding position where the movable mold 6 is brought into contact with the fixed mold 4 and an eject position where the movable mold 6 is moved backward.
尚、主シリンダ１０のラム１０ａ内には油圧式のエジェ
クトシリンダ１２が組込まれていて、エジェクトシリン
ダ１２のピストンロッド１２ａ先端のエジェクトプレー
トには可動盤５と可動金型６とを摺動自在に挿通する１
対のエジェクトピン１３が設けられている。A hydraulic eject cylinder 12 is built into the ram 10a of the main cylinder 10, and the eject plate at the tip of the piston rod 12a of the eject cylinder 12 allows the movable platen 5 and the movable mold 6 to slide freely. Insert 1
A pair of eject pins 13 are provided.
次に、第２図・第３図に示すように、固定盤３の中央部
には射出装置１の射出ノズルＩＡが嵌入され、固定金型
４にはその中央部を前後方向に貫く射出孔１４が形成さ
れている。Next, as shown in FIGS. 2 and 3, the injection nozzle IA of the injection device 1 is fitted into the center of the fixed platen 3, and the injection hole IA of the injection device 1 is inserted into the fixed mold 4 through the center in the front-rear direction. 14 is formed.
固定金型４と可動金型６とスイングコア８とで成形され
る成形品Ｐは両端部に鍔部を有する円周１／４に相当す
る円弧状中空体であり、固定金型４と可動金型６とは成
形品Ｐの円弧状軸心を左右方向に移動させて形成し得る
部分円筒面１５ａと部分円筒面１５ａの下端から下方へ
延びる鉛直面１５ｂとからなる割れ面１５を介して当接
するようになっており、固定金型４の左側面と右側面か
ら略等距離の中央部に沿って固定金型４の割れ面１５の
円筒面部には成形品Ｐの前半部の外形を成形する外形成
形用型部１６ｆ （これを前半型部１６ｆという）が凹
設され、この前半型部１６ｆに対応する位置において可
動金型６の割れ面１５の円筒面部には成形品Ｐの後半部
の外形を成形する外形成形用型部１６ｂ（これを後半型
部１６ｂという）が凹設されている。The molded product P formed by the fixed mold 4, the movable mold 6, and the swing core 8 is an arc-shaped hollow body having flanges at both ends and having a circumference of 1/4. The mold 6 is formed through a split surface 15 consisting of a partial cylindrical surface 15a that can be formed by moving the arcuate axis of the molded product P in the left-right direction, and a vertical surface 15b extending downward from the lower end of the partial cylindrical surface 15a. The outer shape of the first half of the molded product P is placed on the cylindrical surface of the crack surface 15 of the fixed mold 4 along the center of the fixed mold 4, which is approximately equidistant from the left and right sides of the fixed mold 4. A mold part 16f for external forming to be molded (this is referred to as the first half mold part 16f) is recessed, and the second half of the molded product P is formed on the cylindrical surface part of the cracking surface 15 of the movable mold 6 at a position corresponding to the first half mold part 16f. An external shaping mold part 16b (hereinafter referred to as a second half mold part 16b) for molding the external shape of the part is recessed.
前記スイングコア８は成形品Ｐの内面を成形する為の金
属製の円弧状中子であり、このスイングコア８は断面円
形の円弧状中子部８ａとその上端部の鍔部８ｂとからな
り、このスイングコア８を前半型部１６ｆと後半型部１
６ｂとで形成される空洞部内に上方より円弧方向にスイ
ングさせて挿入させた状態では、スイングコア８の先端
のテーバ状の嵌入部８Ｃが可動金型６の割れ面１５の鉛
直面部に凹設の位置決め凹部１７に嵌まるとともに、ス
イングコア８の鍔部８ｂが固定金型４と可動金型６の上
面に凹設の矩形穴１８に嵌まり、前半型部１６ｆと後半
型部１６ｂとスイングコア８とで円弧状中空プラスチッ
ク部品（成形品）の成形キャビティが形成され、上記射
出孔１４がこの成形キャビティに連通している。The swing core 8 is a metal arc-shaped core for molding the inner surface of the molded product P, and this swing core 8 consists of an arc-shaped core part 8a with a circular cross section and a flange part 8b at its upper end. , this swing core 8 is connected to the first half mold part 16f and the second half mold part 1.
When the swing core 8 is inserted by swinging in an arcuate direction from above into the cavity formed by the movable mold 6, the tapered fitting part 8C at the tip of the swing core 8 is recessed in the vertical part of the crack surface 15 of the movable mold 6. At the same time, the collar part 8b of the swing core 8 is fitted into the rectangular hole 18 recessed in the upper surfaces of the fixed mold 4 and the movable mold 6, and the swing core 8 is fitted into the positioning recess 17 of the swing core 8. A molding cavity for an arcuate hollow plastic part (molded product) is formed with the core 8, and the injection hole 14 communicates with this molding cavity.
上記スイングコア８を円弧方向にスイングさせるスイン
グ機構９は次のように構成されている。The swing mechanism 9 for swinging the swing core 8 in an arcuate direction is constructed as follows.
即ち、可動金型６の後端近傍部の上端部には、その全幅
に亙る軸孔が左右方向に透設され、軸孔には支軸１８が
回動自在に装着され、この支軸１８の左右方向中央部に
は支軸１８に対して直交状にアーム１９が固着され、こ
のアーム１９の先端部はスイングコア８の鍔部８ｂに固
着されている。That is, in the upper end of the vicinity of the rear end of the movable mold 6, a shaft hole extending over the entire width thereof is transparently provided in the left-right direction, and a support shaft 18 is rotatably mounted in the shaft hole. An arm 19 is fixed to the center in the left-right direction perpendicularly to the support shaft 18, and the tip of this arm 19 is fixed to the flange 8b of the swing core 8.
上記アーム１９を可動金型６の上面に倒した状態では、
第３図実線図示のようにスイングコア８が成形位置にな
り、アーム１９を上方へ鉛直に起した状態ではスイング
コア８が第３図仮想線図示のように両金型４・６内の空
洞部から円弧方向へ抜き出された抜き出し位置になる。When the arm 19 is laid down on the upper surface of the movable mold 6,
When the swing core 8 is in the molding position as shown by the solid line in FIG. 3 and the arm 19 is raised vertically upward, the swing core 8 is moved into the cavity in both molds 4 and 6 as shown by the phantom line in FIG. It becomes the extraction position extracted from the part in the circular arc direction.
アーム１９を介してスイングコア８を上記のように位置
切換えするため、第２図に示すように可動金型６の右側
面に沿って油圧シリンダ２０が路上下方向に向けて配設
され、この油圧シリンダ２０のピストンロッド２０ａの
先端部が支軸１８の軸端のレバー２１の先端部に左右方
向向きのピンを介して連結され、油圧シリンダ２０の下
端部は可動金型６に左右方向向きのビンを介して連結さ
れている。In order to switch the position of the swing core 8 as described above via the arm 19, a hydraulic cylinder 20 is disposed along the right side of the movable mold 6 so as to face downward on the road, as shown in FIG. The tip of the piston rod 20a of the hydraulic cylinder 20 is connected to the tip of the lever 21 at the end of the support shaft 18 via a left-right pin, and the lower end of the hydraulic cylinder 20 is connected to the movable mold 6 in the left-right direction. are connected through the bins.
尚、上記スイングコア８を成形後の成形品Ｐから抜き出
すときの抜き勾配のため、スイングコア８の円弧状中子
部８ａはその基端部（！：Ｆ部側）からその先端部に向
って徐々に小径となるように形成されている。Note that due to the draft angle when the swing core 8 is extracted from the molded product P after molding, the arcuate core portion 8a of the swing core 8 is oriented from its base end (!: F section side) toward its distal end. It is formed so that the diameter gradually becomes smaller.
次に、上記射出成形装置Ｍの作動について説明する。Next, the operation of the injection molding apparatus M will be explained.
先ず、可動金型６をエジェクト位置にした状態で、油圧
シリンダ２０のピストンロッド２０ａを収縮させてスイ
ングコア８を下方の成形位置に切換えてその嵌入部８Ｃ
を位置決め凹部１７に嵌めてから、主シリンダ１０によ
り可動盤５を前進させて可動金型６を固定金型４に当接
させる。この状態において成形キャビティ内へ溶融プラ
スチックを射出すると、溶融プラスチックが成形キャビ
ティの全体に充填され、冷却手段で冷却されている金型
４・６内で冷却され固化して成形品Ｐとなる。First, with the movable mold 6 in the eject position, the piston rod 20a of the hydraulic cylinder 20 is contracted to switch the swing core 8 to the lower molding position, and the fitting portion 8C is moved.
is fitted into the positioning recess 17, and then the movable platen 5 is advanced by the main cylinder 10 to bring the movable mold 6 into contact with the fixed mold 4. When molten plastic is injected into the molding cavity in this state, the molten plastic fills the entire molding cavity, is cooled and solidified in the molds 4 and 6 which are cooled by the cooling means, and becomes the molded product P.
上記のように成形品Ｐが十分に固まったときに、油圧シ
リンダ２０のピストンロッド２０ａを伸長させてアーム
１９を上方へ回動させていくと、スイングコア８が円弧
方向へスイングして成形品Ｐから抜き出されることにな
る。When the molded product P is sufficiently hardened as described above, when the piston rod 20a of the hydraulic cylinder 20 is extended and the arm 19 is rotated upward, the swing core 8 swings in the arc direction and the molded product It will be extracted from P.
次に、主シリンダ１０により可動盤５を後方へ移動させ
、エジェクト機構で成形品Ｐを可動金型６からエジェク
トする。Next, the movable platen 5 is moved rearward by the main cylinder 10, and the molded product P is ejected from the movable mold 6 by the eject mechanism.
但、し、上記スイングコア８は可動金型６と固定金型４
とを組み合せた状態で、空洞部内へ挿入させてもよい。However, the swing core 8 has a movable mold 6 and a fixed mold 4.
The combination may be inserted into the cavity.
また、スイングコア８は可動金型６を後方へ退かせた後
、成形品Ｐから抜き出してもよい。Further, the swing core 8 may be extracted from the molded product P after the movable mold 6 is moved backward.
上記円弧状中空部を有する成形品Ｐの為のプラスチック
材料としては、フェノール系合成樹脂、ナイロンその他
射出成形可能な各種合成樹脂を用いることが出来る。As the plastic material for the molded article P having the circular arc-shaped hollow portion, phenolic synthetic resin, nylon, and various other synthetic resins that can be injection molded can be used.
上記円弧状中空部を有する成形品Ｐとしては、エンジン
の吸気管、吸気マニホールド、空調系のダクト、その他
各種の用途のプラスチック部品が適用対象となる。The molded product P having the circular arc-shaped hollow portion is applicable to engine intake pipes, intake manifolds, air conditioning system ducts, and other plastic parts for various uses.
例えば、第４図・第５図の符号ＰＡはフェノール系合成
樹脂製の吸気マニホールド及びそれと一体のサージタン
クであり、吸気マニホールドの各分岐管２２は円弧状中
空体である。For example, the symbol PA in FIGS. 4 and 5 is an intake manifold made of phenolic synthetic resin and a surge tank integrated therewith, and each branch pipe 22 of the intake manifold is an arcuate hollow body.
この成形品ＰＡを成形する射出成形装置の場合、第５図
の矢印２４の方向に円弧方向にスイングさせて挿入する
４組のスイングコア８と矢印２５の方向に挿入するサー
ジタンク用中子を備えている。In the case of an injection molding apparatus for molding this molded product PA, four sets of swing cores 8 are inserted by swinging in an arc direction in the direction of arrow 24 in FIG. 5, and a core for a surge tank is inserted in the direction of arrow 25. We are prepared.
尚、スイングコア８は必ずしも可動金型６に装着する必
要はなく、可動盤５側に装着してもよく、固定金型４や
固定盤３に装着してもよい。また、スイング機構９でス
イングコア８を成形品Ｐから抜き取るときに加圧エアの
圧力をスイングコアの先端面に作用させてバックアップ
することも考えられる。また、スイング機構９はモータ
（電動やエア）で駆動させることもできる。Note that the swing core 8 does not necessarily need to be attached to the movable mold 6, and may be attached to the movable platen 5 side, or may be attached to the fixed die 4 or the fixed platen 3. Further, when the swing core 8 is extracted from the molded product P by the swing mechanism 9, it is also possible to back up the pressure of pressurized air by acting on the tip end surface of the swing core. Further, the swing mechanism 9 can also be driven by a motor (electric or air).
第６図・第７図はフェノール系合成樹脂材料で成形した
２体の成形品ＰＣ−ＰＤをボルト接合してなる吸気マニ
ホールドである。第１成形品ＰＣの各分岐管２６は円弧
状中空体であり、矢印２７方向へスイングコアを抜き取
る抜き勾配が設けられている。そして、第２成形品ＰＤ
の各分岐管２８は円弧状中空体であり、矢印２９方向へ
スイングコアを抜き取る抜き勾配が設けられている。6 and 7 show an intake manifold formed by bolting together two molded products PC-PD molded from a phenolic synthetic resin material. Each branch pipe 26 of the first molded product PC is an arc-shaped hollow body, and is provided with a draft angle for extracting the swing core in the direction of the arrow 27. And the second molded product PD
Each of the branch pipes 28 is an arc-shaped hollow body, and is provided with a draft angle for extracting the swing core in the direction of the arrow 29.
そして、吸気の流れの方向は矢印２７・２９と反対方向
である。The direction of the intake air flow is opposite to the arrows 27 and 29.
図面は本発明の実施例を示すもので、第１図は射出成形
装置の側面図、第２図は上記形成装置の要部拡大斜視部
、第３図は上記成形装置の要部拡大縦断側面図、第４図
・第５図は成形品の変形例を示すもので夫々成形品の正
面図及び側面図、第６図・第７図は成形品の他の変形例
を示すもので夫々成形品の正面図及び側面図である。
４・・固定金型、 ６・・可動金型、 ８・・スイング
コア、 ９・・スイング機構、 １６ｆ・・前半型部
、 １６ｂ・・後半型部、 Ｐ−ＰＡ・ＰＢ −ＰＣ
・・成形品。
特 許 出 願 人 マツダ株式会社第２ＦＩＪ
第３図
１６ｂ、後半型部The drawings show an embodiment of the present invention, and FIG. 1 is a side view of an injection molding device, FIG. 2 is an enlarged perspective view of the main part of the above-mentioned forming device, and FIG. 3 is an enlarged longitudinal cross-sectional side view of the main part of the above-mentioned molding device. Figures 4 and 5 show modified examples of the molded product, and are respectively a front view and a side view of the molded product, and Figures 6 and 7 show other modified examples of the molded product, respectively. They are a front view and a side view of the product. 4. Fixed mold, 6. Movable mold, 8. Swing core, 9. Swing mechanism, 16f.. First half mold part, 16b.. Second half mold part, P-PA・PB-PC
··Molding. Patent applicant Mazda Motor Corporation 2nd FIJ Figure 3 16b, second half mold section
Claims (1)
する製造装置において、 上記プラスチック部品の一方の側の外形を成形する外形
成形用型部を有する固定型と、上記プラスチック部品の
他方の側の外形を成形する外形成形用型部を有し上記固
定型に対向状に配設され上記固定型に当接する位置と離
反した位置とに駆動される可動型と、上記プラスチック
部品の円弧状中空部を成形する為の円弧状中子としての
スイングコアであって、上記固定型の外形成形用型部と
可動型の外形成形用型部とで形成される空洞部内に円弧
方向にスイングさせることにより挿入及び抜取り可能な
スイングコアとを備えたことを特徴とする円弧状中空プ
ラスチック部品の製造装置。(1) In a manufacturing device for manufacturing a plastic part having an arc-shaped hollow part, there is provided a fixed mold having an outer shaping mold part for molding the outer shape of one side of the plastic part, and a fixed mold having an outer shape mold part for molding the outer shape of one side of the plastic part, and a fixed mold for forming the outer shape of the plastic part on the other side. a movable mold having an external shaping mold part for molding an external shape, the movable mold being disposed opposite to the fixed mold and driven to a position in contact with the fixed mold and a position away from the fixed mold; and a circular arc-shaped hollow part of the plastic part. A swing core as an arc-shaped core for molding, by swinging in an arc direction into a cavity formed by the fixed outer forming mold part and the movable outer forming mold part. A manufacturing device for arc-shaped hollow plastic parts, characterized by comprising a swing core that can be inserted and extracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9412786A JPS62249721A (en) | 1986-04-23 | 1986-04-23 | Apparatus for producing arc-shaped hollow plastics component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9412786A JPS62249721A (en) | 1986-04-23 | 1986-04-23 | Apparatus for producing arc-shaped hollow plastics component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62249721A true JPS62249721A (en) | 1987-10-30 |
Family
ID=14101749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9412786A Pending JPS62249721A (en) | 1986-04-23 | 1986-04-23 | Apparatus for producing arc-shaped hollow plastics component |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62249721A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0670210A2 (en) * | 1994-03-03 | 1995-09-06 | Kimberly-Clark Corporation | Process for injection molding arcuately-shaped hollow articles |
| US5470522A (en) * | 1992-08-26 | 1995-11-28 | Thome; Scott P. | Method of molding Y-adapter with a sideport radius |
| US5540576A (en) * | 1992-12-22 | 1996-07-30 | Toyoda Gosei Co., Ltd. | Apparatus having a vacuum chamber for producing moldings |
| EP1097792A1 (en) * | 1999-11-04 | 2001-05-09 | Klaus Beck | Apparatus for moulding and removing bent pipes as well as method of operating such an apparatus |
| WO2015063576A1 (en) * | 2013-10-31 | 2015-05-07 | Swissinnov Product Sarl | Portable pump and method for producing same |
| JP2015223707A (en) * | 2014-05-26 | 2015-12-14 | 株式会社岐阜多田精機 | Manifold injection molding device and injection molding method thereof |
| EP3012446A1 (en) * | 2014-10-21 | 2016-04-27 | Yamaha Hatsudoki Kabushiki Kaisha | Straddled vehicle and method for manufacturing intake member |
| EP3012447A1 (en) * | 2014-10-21 | 2016-04-27 | Yamaha Hatsudoki Kabushiki Kaisha | Straddled vehicle and method for manufacturing intake member |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4834969A (en) * | 1971-08-31 | 1973-05-23 | ||
| JPS5175759A (en) * | 1974-12-26 | 1976-06-30 | Aron Kasei Kk | KOJOWANKYOKUBUOJUSURUGOSEIJUSHIKANTSUGITESEIKEISOCHI |
| JPS5342061A (en) * | 1976-09-28 | 1978-04-17 | Oken Seiko Kk | Digital indicator |
| JPS5421861A (en) * | 1977-07-20 | 1979-02-19 | Toshiba Corp | Production of liquid crystal elements |
| JPS5839865U (en) * | 1981-09-12 | 1983-03-16 | 小森印刷機械株式会社 | printing press control stand |
-
1986
- 1986-04-23 JP JP9412786A patent/JPS62249721A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4834969A (en) * | 1971-08-31 | 1973-05-23 | ||
| JPS5175759A (en) * | 1974-12-26 | 1976-06-30 | Aron Kasei Kk | KOJOWANKYOKUBUOJUSURUGOSEIJUSHIKANTSUGITESEIKEISOCHI |
| JPS5342061A (en) * | 1976-09-28 | 1978-04-17 | Oken Seiko Kk | Digital indicator |
| JPS5421861A (en) * | 1977-07-20 | 1979-02-19 | Toshiba Corp | Production of liquid crystal elements |
| JPS5839865U (en) * | 1981-09-12 | 1983-03-16 | 小森印刷機械株式会社 | printing press control stand |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5470522A (en) * | 1992-08-26 | 1995-11-28 | Thome; Scott P. | Method of molding Y-adapter with a sideport radius |
| US5540576A (en) * | 1992-12-22 | 1996-07-30 | Toyoda Gosei Co., Ltd. | Apparatus having a vacuum chamber for producing moldings |
| EP0670210A2 (en) * | 1994-03-03 | 1995-09-06 | Kimberly-Clark Corporation | Process for injection molding arcuately-shaped hollow articles |
| EP0670210A3 (en) * | 1994-03-03 | 1995-11-29 | Kimberly Clark Co | Process for injection molding arcuately-shaped hollow articles. |
| GB2286988B (en) * | 1994-03-03 | 1998-01-14 | Kimberly Clark Co | Process and apparatus for injection molding arcuately-shaped hollow articles |
| EP1097792A1 (en) * | 1999-11-04 | 2001-05-09 | Klaus Beck | Apparatus for moulding and removing bent pipes as well as method of operating such an apparatus |
| WO2015063576A1 (en) * | 2013-10-31 | 2015-05-07 | Swissinnov Product Sarl | Portable pump and method for producing same |
| CN105848692A (en) * | 2013-10-31 | 2016-08-10 | 斯维斯诺弗产品责任有限公司 | Portable pump and method for producing same |
| JP2015223707A (en) * | 2014-05-26 | 2015-12-14 | 株式会社岐阜多田精機 | Manifold injection molding device and injection molding method thereof |
| EP3012446A1 (en) * | 2014-10-21 | 2016-04-27 | Yamaha Hatsudoki Kabushiki Kaisha | Straddled vehicle and method for manufacturing intake member |
| EP3012447A1 (en) * | 2014-10-21 | 2016-04-27 | Yamaha Hatsudoki Kabushiki Kaisha | Straddled vehicle and method for manufacturing intake member |
| CN105525999A (en) * | 2014-10-21 | 2016-04-27 | 雅马哈发动机株式会社 | Straddled vehicle and method for manufacturing intake member |
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