JPS6280019A - Injection blow molding machine - Google Patents

Injection blow molding machine

Info

Publication number
JPS6280019A
JPS6280019A JP60221395A JP22139585A JPS6280019A JP S6280019 A JPS6280019 A JP S6280019A JP 60221395 A JP60221395 A JP 60221395A JP 22139585 A JP22139585 A JP 22139585A JP S6280019 A JPS6280019 A JP S6280019A
Authority
JP
Japan
Prior art keywords
mold
core
injection
molding
neck
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60221395A
Other languages
Japanese (ja)
Other versions
JPH06362B2 (en
Inventor
Kenji Omiya
大宮　健二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP60221395A priority Critical patent/JPH06362B2/en
Publication of JPS6280019A publication Critical patent/JPS6280019A/en
Publication of JPH06362B2 publication Critical patent/JPH06362B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4856—Mounting, exchanging or centering moulds or parts thereof
    • B29C2049/4858—Exchanging mould parts, e.g. for changing the mould size or geometry for making different products in the same mould

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To carry out suitably and selectively injection molding or injection blow molding by using the same molding machine, by making an injection cavity mold and a core mold to open and close on the same axis line and at the same time by setting a split-cavity mold, to be able to open and close and to be faced to the perpendicular direction against an axis line connecting the injection cavity mold and the core mold, in the core mold. CONSTITUTION:When a mold is opened by means of a mold-clamping device, a parison P is separated from an injection cavity mold 2 under being tightly contacted with a core mold 8 by being clamped between a neck mold 10 and a core base 6. After a split-cavity mold is closed at the extreme opening position of the mold by means of a cylinder 24, air is blown into the parison P from a gap 25 between the core base 6 and the core mold 8 through an air path 26. The parison P is thereby separated from the core mold 8 under being held between the neck mold 10 and the core base 6 and then blown to the split-cavity mold 22 and as a result a molding having a neck part of good accuracy can be molded.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、射出成形機としても使用可能な射出吹込成形
機に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an injection blow molding machine that can also be used as an injection molding machine.

（従来の技術〕 従来、プラスチックで容器を射出吹込成形する場合、そ
れが大量生産されるか、中・小量生産されるかにかかわ
りなく、専用の射出吹込成形機が使用されている。(Prior Art) Conventionally, when injection blow molding plastic containers, a dedicated injection blow molding machine has been used, regardless of whether the containers are produced in large quantities or in small to medium quantities.

（発明が解決しようとする問題点） しかし、射出吹込成形機は特殊な成形機であり、使用す
る金型も複雑なものとなるため、価格、納期、メンテナ
ンス等の点で小量生産の成形品に不向きである。また、
専用機であるため、汎用射出成形機としては使用できず
、射出成形機が必要な場合には射出吹込成形機とは別に
射出成形機を設置しなければならないから、この点でも
小ロットの成形品には不向きであるとｈう不都合を免れ
なかった。(Problems to be solved by the invention) However, injection blow molding machines are special molding machines, and the molds used are complex. It is not suitable for products. Also,
Because it is a dedicated machine, it cannot be used as a general-purpose injection molding machine, and if an injection molding machine is required, it must be installed separately from the injection blow molding machine, so this also makes it suitable for small-lot molding. I couldn't escape the inconvenience of being unsuitable for products.

（問題点を解決するための手段） 本発明の射出吹込成形機は、固定側取付板に装着した射
出キャビティ金型と可動側取付板に装着したコア金型を
同一軸線上で開閉可能に設けると共に、前記可動側取付
板に装着したコア金型に、射出キャビティ金型とコア金
型を結ぶ軸線と直角方向に対向する吹込割型を開閉可能
に設けたこと？特徴としており、かかる構成によって同
一の成形機で射出成形又は射出吹込成形を適宜選択して
行なえるようにしたものである。(Means for Solving the Problems) The injection blow molding machine of the present invention has an injection cavity mold mounted on a fixed mounting plate and a core mold mounted on a movable mounting plate so that they can be opened and closed on the same axis. In addition, the core mold attached to the movable side mounting plate is provided with a blowing split mold that can be opened and closed and faces perpendicularly to the axis connecting the injection cavity mold and the core mold. This structure allows injection molding or injection blow molding to be suitably selected and carried out using the same molding machine.

（実施例） 以下本発明を１個取り縦形射出成形機に適用した実施例
につき図面によシ説明する。(Example) An example in which the present invention is applied to a single-cavity vertical injection molding machine will be described below with reference to the drawings.

図中１は固定側取付板で、該取付板１には射出キャピテ
イ金型２がキャビティブロック３を介して装着されると
共に、ロケートリング４が設けられている。In the figure, reference numeral 1 denotes a fixed-side mounting plate, on which an injection cavity mold 2 is mounted via a cavity block 3 and a locate ring 4 is provided.

５は可動側取付板で、該取付板５には、コア金型基端側
の部分をコア座６に貫通させかつナツト７で抜止めした
コア金型８がコアブロック９を介して装着されると共に
、コア座６のコア金型８側部を挾んで対向するネック型
１０（実施例ではネジ型）が後述する如くエジェクタプ
レートｌユを介して設けられている。Reference numeral 5 designates a movable side mounting plate, and a core mold 8 whose proximal end portion of the core mold passes through the core seat 6 and is secured with a nut 7 is attached to the mounting plate 5 via a core block 9. At the same time, a neck mold 10 (screw mold in the embodiment) facing the core seat 6 with the side of the core mold 8 sandwiched therebetween is provided via an ejector plate 1, as will be described later.

この可動側取付板５は、図示しない型締装置により射出
キャビティ金型２及びコア金型８を同一軸線上で開閉可
能に、前記固定側取付板１に対向して配置されている。This movable side mounting plate 5 is arranged opposite to the fixed side mounting plate 1 so that the injection cavity mold 2 and the core mold 8 can be opened and closed on the same axis by a mold clamping device (not shown).

型開閉時金を２゜８を位置決めするため、キャビティブ
ロック３とエジェクタプレート１１には、互に嵌合可能
なガイドピン１２とガ・イド孔１３が設けられている。In order to position the metal at 2°8 when opening and closing the mold, the cavity block 3 and the ejector plate 11 are provided with guide pins 12 and guide holes 13 that can be fitted into each other.

エジェクタプレート１１には、成形機側エジェクタロッ
ド１４が金型側エジェクタロッド１５を介して連結され
ると共に、コアブロック９に設けたガイド孔１６と嵌合
するガイドピン１７が装着されて匹る。このため、エジ
ェクタプレート１ユは、成形機側エジエクタロッドユ４
によりコアブロック９上から平行に開閉される。A molding machine side ejector rod 14 is connected to the ejector plate 11 via a mold side ejector rod 15, and a guide pin 17 that fits into a guide hole 16 provided in the core block 9 is attached. Therefore, the ejector plate 1 unit is attached to the ejector rod unit 4 on the molding machine side.
are opened and closed in parallel from above the core block 9.

前記ネック型１０は、このエジェクタプレート１１上に
両側のスライド押え１８により開閉スライド可能に取付
けられている。このネック型１０には、コアブロック９
に設けたアンギュラ孔１９と嵌合するアンギュラピン２
ｏが設けられている。このため、エジェクタプレート１
１が射出側に押上げられると、ネック型１０はアンギュ
ラピン２０により開きスライドする。成形品の排出はこ
れらの動きを利用して行なわれる０ ２１はネック型開き防止ブロックで、エジェクタプレー
ト１１を押上げない限りネック型１０に係合して閉じ位
置に保持可能に、コアブロック９上に装着されている。The neck mold 10 is mounted on the ejector plate 11 so that it can be slid open and closed by slide holders 18 on both sides. This neck type 10 has a core block 9
Angular pin 2 that fits into angular hole 19 provided in
o is provided. For this reason, ejector plate 1
1 is pushed up toward the injection side, the neck mold 10 opens and slides by the angular pin 20. Ejection of the molded product is carried out by utilizing these movements. 0 21 is a neck mold opening prevention block, which engages with the neck mold 10 and can hold it in the closed position unless the ejector plate 11 is pushed up. is mounted on top.

これによって、射出完了後の型開き時ネック型１０が開
くのを防止できるから、パリソン成形後パリソンが成形
収縮でコア座６から離れる不具合を回避できる。This prevents the neck mold 10 from opening when the mold is opened after completion of injection, so that it is possible to avoid a problem in which the parison separates from the core seat 6 due to molding shrinkage after molding the parison.

また、吹込成形工程でネック型ｌＯが開くのを防止でき
るから、成形品のネック部（ネジ部）に変形が生じる不
具合も回避できる。Furthermore, since the neck mold 10 can be prevented from opening during the blow molding process, problems such as deformation of the neck portion (threaded portion) of the molded product can be avoided.

２２は吹込割型で、前記エジェクタグレート１１上に両
側のスライドベース２３によシスライド可能に取付けら
れて、射出キャビティ金型２及びコア金型８を結ぶ軸線
と直角方向に対向して配置されて込る。スライドベース
２３は、コアブロック９に固定されている。Reference numeral 22 denotes a blowing split mold, which is slidably mounted on the ejector grate 11 by slide bases 23 on both sides, and is disposed opposite to the axis connecting the injection cavity mold 2 and the core mold 8 in a direction perpendicular to the axis. Enter. The slide base 23 is fixed to the core block 9.

２４はシリンダで、スライドベース２３の端部に設けた
シリンダ取付板２３’に装着されると共に、吹込割型２
２に連結されている。24 is a cylinder, which is attached to a cylinder mounting plate 23' provided at the end of the slide base 23, and which is attached to the blowing split mold 2.
It is connected to 2.

２５はコア座６・コア金型８間のエヤ吹込み用間隙で、
コア座６・コアブロック９に設けたエヤ通路２６と連通
している。25 is a gap for air blowing between the core seat 6 and the core mold 8;
It communicates with an air passage 26 provided in the core seat 6 and core block 9.

前記射出キャビティ金型２．コア金型８は温調媒体通路
２７．２８を介して温調媒体を通し成形に適した温度に
コントロール可能となっている。その他の必要部分も成
形品に応じて温度コントロールが可能となっている。The injection cavity mold 2. The temperature of the core mold 8 can be controlled to a temperature suitable for molding by passing a temperature regulating medium through temperature regulating medium passages 27 and 28. The temperature of other necessary parts can also be controlled depending on the molded product.

尚、１個取りの例について説明したが、必要に応じて複
数個の射出キャビティ金型、コア金型及び吹込割型とホ
ットランナを設け、多数個域りにしても同効である。ま
た、縦形射出成形の例につき説明したが、横形射出成形
としても同効である。Although a single molding example has been described, the same effect can be achieved even if a plurality of injection cavity molds, core molds, blowing split molds, and hot runners are provided as necessary. Further, although the example of vertical injection molding has been described, the same effect can be applied to horizontal injection molding.

（作用） 成形工程企オ６図〜オ８図により説明する。(effect) The molding process plan will be explained with reference to Figures 6 to 8.

（１）射出工程（オ６図参照ン 吹込割型２２ｆ！：開いた状態で型締装置によりコア金
型８．ネック型１０等を固定側取付板１側べ移動して型
締めした後、図示しない可塑化装置により溶融樹脂を射
出すると、溶融樹脂は射出キャビティ金型２とコア金型
８との間、及び、ネック型１ｏとコア座６との間に流入
し、パリソンＰが成形される。(1) Injection process (see Figure 6) Blow split mold 22f: After moving the core mold 8, neck mold 10, etc. to the side of the fixed side mounting plate 1 using the mold clamping device in the open state and clamping the mold, When the molten resin is injected by a plasticizing device (not shown), the molten resin flows between the injection cavity mold 2 and the core mold 8 and between the neck mold 1o and the core seat 6, and the parison P is molded. Ru.

（２）吹込工程（オツ図参照） 型締装置によシ型開きすると、ノくリソンＰはネック型
１０とコア座６との間に掴持されてコア金型８に密着し
たまま射出キャビティ金型２から離型される。(2) Blow process (see Otsu diagram) When the mold is opened by the mold clamping device, the nozzle P is held between the neck mold 10 and the core seat 6, and is inserted into the injection cavity while remaining in close contact with the core mold 8. The mold is released from the mold 2.

図示する型開眼位置でシリンダ２４により吹込割型２２
を閉じた後、図示しない空気源によりエヤ通路２６を経
てコア座６とコア金型８の隙間２５からエヤをパリンン
Ｐ内に吹込むと、パリソンＰは、ネック型１０とコア座
６との間に掴持されたままコア金型８から離型して吹込
割型２２まで膨み、精度の良いネック部を有する成形品
Ｗが成形される。The blowing mold 22 is opened by the cylinder 24 in the mold opening position shown in the figure.
After closing the parison P, when air is blown into the parison P from the gap 25 between the core seat 6 and the core mold 8 through the air passage 26 by an air source (not shown), the parison P will be closed between the neck mold 10 and the core seat 6. It is released from the core mold 8 while being held between them and expands to the blowing split mold 22, thereby forming a molded product W having a highly accurate neck portion.

（３）排出工程（第８図参照） シリンダ２４によシ吹込割型２２を開いた後、成形機側
エジェクタロッド１４によりエジェクタプレー）１１を
押上げると、ネック型よ０は固定側取付板１側に移動し
てコアブロック９から外れると共にアンギュラピン２０
により開かれる。このため、成形品Ｗは、エジェクタプ
レート１１によりコア金型８から外れて排出される。(3) Discharge process (see Figure 8) After opening the blowing split mold 22 by the cylinder 24, push up the ejector plate 11 with the ejector rod 14 on the molding machine side. 1 side and detach from the core block 9, and the angular pin 20
Opened by Therefore, the molded product W is removed from the core mold 8 by the ejector plate 11 and is ejected.

（４）エジェクタプレート１１を元のコアブロック９上
に戻すと、ネック型ｌＯはアンギュラピン２０により閉
じられる。かかる状態で前記の射出工程が行なわれて、
成形サイクルが連続する。(4) When the ejector plate 11 is returned to the original core block 9, the neck mold 10 is closed by the angular pin 20. The injection process is performed in such a state,
Molding cycles are continuous.

（発明の効果） 以上の通り本発明は、一般的な射出成形機に射出吹込成
形金型を搭載した簡単な構成であるため、射出成形機の
極めて簡単な改造で射出吹込成形ができると共に、同一
の成形機で←≠寺←÷一般の射出成形用金型と上記金型
分交換することにより射出成形機としても使用できる。(Effects of the Invention) As described above, the present invention has a simple configuration in which an injection blow molding mold is mounted on a general injection molding machine, so that injection blow molding can be performed with an extremely simple modification of the injection molding machine. The same molding machine can also be used as an injection molding machine by replacing the mold with a general injection mold.

従って、設備費の低減、メンテナンス性の向上、及び、
成形稼動率の向上を大幅に図ることができ、射出吹込成
形の中・小量生産の成形品にも充分に対応しうる。Therefore, equipment costs are reduced, maintainability is improved, and
It is possible to significantly improve the molding operation rate, and it is fully applicable to injection blow molding for medium and small volume production of molded products.

【図面の簡単な説明】[Brief explanation of drawings]

オニ図、第２図、第３図は本発明の一実施例を示す平面
図、Ａ−Ａ線に清う部分断面の正面図、右側電図、第４
図はＢ−Ｂ線に清う断面の正面図、第５図はＣ〜線に沿
う側断面図、オ６図、オフ図、オ８図は射出工程、吹込
工程、排出工程を示す正面図である。 Ｐ・・・パリソン、Ｗ・・・成形品、ｌ・・・固定側取
付板、２・・・射出キャビティ金型、５・・・可動側取
付板、６・・・コア座、８・・・コア金型、１０・・・
ネック型、１１・・・エジェクタプレート、１４．１５
・・・エジェクタロッド、２０・・・アンギュラピン、
２１・・・ネック型開き防止ブロック、２２・・・吹込
割型、２４・・・シリンダ、２５・・・エヤ吹込み用間
隙。 第　１　図 第２図 第５図 第３図 第４図 第８図Figures 2 and 3 are a plan view showing one embodiment of the present invention, a front view of a partial cross section taken along the line A-A, a right side electrical diagram, and a fourth figure.
The figure is a front view of the cross section taken along line B-B, Figure 5 is a side sectional view taken along line C, Figure O6, Off view, and Figure O8 are front views showing the injection process, blowing process, and discharge process. It is. P... Parison, W... Molded product, l... Fixed side mounting plate, 2... Injection cavity mold, 5... Movable side mounting plate, 6... Core seat, 8...・Core mold, 10...
Neck type, 11... Ejector plate, 14.15
... Ejector rod, 20... Angular pin,
21...Neck mold opening prevention block, 22...Blowing split mold, 24...Cylinder, 25...Air blowing gap. Figure 1 Figure 2 Figure 5 Figure 3 Figure 4 Figure 8

Claims (1)

【特許請求の範囲】[Claims] 固定側取付板に装着した射出キャビティ金型と可動側取
付板に装着したコア金型を同一軸線上で開閉可能に設け
ると共に、前記可動側取付板に装着したコア金型に、射
出キャビティ金型とコア金型を結ぶ軸線と直角方向に対
向する吹込割型を開閉可能に設けたことを特徴とする射
出吹込成形機。An injection cavity mold mounted on the fixed side mounting plate and a core mold mounted on the movable side mounting plate are provided so as to be openable and closable on the same axis, and an injection cavity mold is attached to the core mold mounted on the movable side mounting plate. An injection blow molding machine characterized by having a split blow mold that is openable and closable and faces perpendicularly to an axis connecting the core mold and the core mold.
JP60221395A 1985-10-04 1985-10-04 Injection blow molding machine Expired - Lifetime JPH06362B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60221395A JPH06362B2 (en) 1985-10-04 1985-10-04 Injection blow molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60221395A JPH06362B2 (en) 1985-10-04 1985-10-04 Injection blow molding machine

Publications (2)

Publication Number Publication Date
JPS6280019A true JPS6280019A (en) 1987-04-13
JPH06362B2 JPH06362B2 (en) 1994-01-05

Family

ID=16766090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60221395A Expired - Lifetime JPH06362B2 (en) 1985-10-04 1985-10-04 Injection blow molding machine

Country Status (1)

Country Link
JP (1) JPH06362B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013062014A1 (en) * 2011-10-24 2013-05-02 日精エー・エス・ビー機械株式会社 Injection blow molding device, mold unit used therefor, and injection blow molding method

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Publication number Priority date Publication date Assignee Title
WO2013062014A1 (en) * 2011-10-24 2013-05-02 日精エー・エス・ビー機械株式会社 Injection blow molding device, mold unit used therefor, and injection blow molding method

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