JPS60180814A - Stretching blow molding system - Google Patents
Stretching blow molding systemInfo
- Publication number
- JPS60180814A JPS60180814A JP59037669A JP3766984A JPS60180814A JP S60180814 A JPS60180814 A JP S60180814A JP 59037669 A JP59037669 A JP 59037669A JP 3766984 A JP3766984 A JP 3766984A JP S60180814 A JPS60180814 A JP S60180814A
- Authority
- JP
- Japan
- Prior art keywords
- preform
- blow
- temperature control
- mold
- blowing
- 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
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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
-
- 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
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
- B29C49/6445—Thermal conditioning of preforms characterised by temperature differential through the preform length
-
- 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
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6463—Thermal conditioning of preforms by contact heating or cooling, e.g. mandrels or cores specially adapted for heating or cooling preforms
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は射出成形したプリフォームの温調と延伸とを
同一部材をもって行う延伸吹込成形方法に関するもので
おる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stretch blow molding method in which temperature control and stretching of an injection molded preform are performed using the same member.
通常延伸吹込成形は異なった位置にてノリフオームの温
調と延伸吹込成形とを行っている。このためプリフォー
ムの射出成形から製品の離°型までを連続的に行う場合
には、装置として射出、温調、延伸吹込、離型の４つの
ステーションが必要となる。Normally, stretch blow molding involves controlling the temperature of the Noriform and stretching blow molding at different locations. For this reason, when the process from injection molding of a preform to demolding of a product is carried out continuously, four stations are required: injection, temperature control, stretch blowing, and demolding.
またこの種の装置における成形サイクルは、プリフォー
ムの射出成形時間を基準にして設定されておシ、射出成
形が完了しなければ、他のステーションにあるノリフオ
ームや製品を次のステーションに移送することはできな
い。このため射出成形時間よシも早くプリフォームの温
調が完了しても、吹込金型への移送は待たなければなら
ず、またその間に温度分布が変化するなどのことから、
温調はタイミングよく拘われなければならず、タイミン
グを誤ると良好な温度分布のもとに延伸吹込成形が行わ
れず、肉厚分布が整った製品を得ることができなくなる
。In addition, the molding cycle in this type of equipment is set based on the injection molding time of the preform, and if the injection molding is not completed, the mold form or product at another station may be transferred to the next station. I can't. For this reason, even if the temperature control of the preform is completed faster than the injection molding time, the transfer to the blowing mold must wait, and the temperature distribution changes during that time.
Temperature control must be controlled at the right time; if the timing is incorrect, stretch blow molding will not be performed with good temperature distribution, making it impossible to obtain a product with uniform thickness distribution.
上記従来法の欠点は、プリフォームの温調と延伸吹込成
形とを、異なった位置にて行うことから生ずるものであ
って、その２つの工程をプリフォームの射出成形時間内
にて、同一位置にて行えば解消できる。The disadvantage of the conventional method described above arises from the fact that temperature control of the preform and stretch blow molding are performed at different locations, and these two steps are performed at the same location within the injection molding time of the preform. It can be resolved by going to
しかしながら、１つのステーションに温調装置と吹込金
型とを配設することは構成及び操作を複雑化する原因と
なシ、装置としてあまシ好ましく＾ことではないとされ
ている。However, it is said that arranging the temperature control device and the blowing mold in one station complicates the configuration and operation, and is not desirable as an apparatus.
そこで本発明者は種々の改良を試みた結果、シリフオー
ムの温調手段を変更することによシ、１つのステーショ
ンにおいて、ノリフオームの温調と延伸吹込成形とを、
プリフォームの射出成形時間内に連続して実施すること
ができることを見出したのである。Therefore, the inventor of the present invention tried various improvements, and by changing the temperature control means of the silicon foam, it was possible to perform temperature control of the silicon foam and stretch blow molding in one station.
It has been found that the process can be carried out continuously during the injection molding time of the preform.
この発明の目的は、射出成形されたプリフォームの温調
と延伸吹込成形とを同一位置にて行うことができ、しか
もプリフォームの温調と軸方向への延伸を、１つの部材
の移動をもって行うことができる新たな延伸吹込成形方
法を提供するととＫある。An object of the present invention is to be able to perform temperature control of an injection-molded preform and stretch blow molding at the same location, and to perform temperature control and axial stretching of the preform by moving one member. We would like to provide a new stretch blow molding method that can be carried out.
またこの発明の他の目的は、プリフォームの射出成形時
間にタイミングさせて温調を行う必要がなく、最も良好
な温度分布に温調されたノリフオームを直ちに延伸吹込
成形することができるばかシか、成型装置中の１つのス
テーションを省略スることができる延伸吹込方法を提供
するものでもある。Another object of the present invention is to provide a method that does not require temperature control at the same time as the injection molding time of the preform, and can immediately stretch-blow mold a Noriform whose temperature has been controlled to provide the best temperature distribution. It also provides a stretch blowing method that allows one station in the molding apparatus to be omitted.
上記目的によるこの発明の特徴は、吹込金型の上方に配
設した昇降自在々吹込コアの中心に、熱媒通路有するロ
ッドを摺動自在に挿通するとともに、ロッド先端部をノ
リフオーム内面と接する所要長さの温調ヘッドに形成し
、その温調−・ラドをもって吹込金型の中央部に位置し
たシリフオームの温調と軸方向への延伸とを行うことに
ある。A feature of the present invention for the above-mentioned purpose is that a rod having a heat medium passage is slidably inserted into the center of a movable blowing core disposed above a blowing mold, and the tip of the rod is brought into contact with the inner surface of a Noriform. The purpose is to form a long temperature control head, and use the temperature control head to control the temperature of the silicon foam located in the center of the blowing mold and to stretch it in the axial direction.
以下この発明を図示の例によシ詳細に説明する。The present invention will be explained in detail below using illustrated examples.
図中１は吹込金型、２はプリフォーム３の保持を兼ねる
ネック型で、その両方は水平方向に開閉する割型よりな
る。In the figure, 1 is a blow mold, 2 is a neck mold which also serves to hold the preform 3, and both are split molds that open and close in the horizontal direction.
４は中空の吹込コアで、上記吹込金型１の中央部上方に
昇降自在に配設され、また先端には吹込孔５が穿設しで
ある。この吹込コア４の先端部の外径は、ネック型２の
内部に形成される穴６に収まる直径よりなり、かつ中央
部には冷却または加熱用の熱媒通路７を内部に有するロ
ッド８が挿通しである。Reference numeral 4 denotes a hollow blowing core, which is disposed above the center of the blowing mold 1 so as to be movable up and down, and has a blowing hole 5 formed at its tip. The outer diameter of the tip of this blowing core 4 is such that it fits into the hole 6 formed inside the neck mold 2, and a rod 8 having a heat medium passage 7 for cooling or heating inside is located in the center. It is an insertion.
またロッド８の吹込コアから突出した先端部は、上記ノ
リフオーム３の温度を内側から調整するヘッド９に形成
しである。この温調ヘッド９はノリフオーム３の内底面
から首部に至る長さに形成され、また外径はプリフォー
ム３の内径とほぼ等しく形成されて、外面がグリ７オー
ム内面と接するようにしである。このような温調全ラド
９によるプリフォーム３の温度調整は、射出成形された
プリフォーム３が、上記ネック型２に保持されて、延伸
吹込ステーションに移送され、吹込金型１の中央部に停
止したのちに行うことができる。The tip of the rod 8 protruding from the blowing core is formed into a head 9 that adjusts the temperature of the norifome 3 from the inside. The temperature control head 9 is formed to have a length extending from the inner bottom surface of the Noriform 3 to the neck, and its outer diameter is approximately equal to the inner diameter of the preform 3, so that the outer surface is in contact with the inner surface of the Noriform 3. The temperature of the preform 3 is controlled by the temperature controller 9. The injection molded preform 3 is held in the neck mold 2, transferred to the stretch blowing station, and placed in the center of the blow mold 1. This can be done after it has stopped.
また温調に際して、吹込金型１を閉じて置く必要はなく
、温調と並行して或は温調後に型閉じを行ってもよい。Further, during temperature control, it is not necessary to close the blowing mold 1, and the mold may be closed in parallel with or after temperature control.
上記プリフォーム３への温調ヘッド９の挿入は、吹込コ
ア４の下降をもって行う。エアまたは油圧シリンダなど
の作動によシ下降して行く吹込コア先端の温調ヘッド９
は、基盤、移送盤（図を省略）に穿設した穴、更にはネ
ック型２の穴６などを貫通してプリフォーム３の内部に
収まってプリフォーム内面と接触する。また吹込コア４
の先端部は穴６に収まシ、吹込孔５はシリフオーム３の
開口に位置する。The temperature control head 9 is inserted into the preform 3 by lowering the blowing core 4. Temperature control head 9 at the tip of the blowing core that descends due to the operation of an air or hydraulic cylinder, etc.
passes through holes drilled in the base, a transfer plate (not shown), and further through holes 6 in the neck mold 2, fits inside the preform 3, and comes into contact with the inner surface of the preform. Also blowing core 4
The tip end of the hole 6 fits into the hole 6, and the blowing hole 5 is located at the opening of the syringe ohm 3.
上記温調ヘッド９によるプリフォーム３の温度調整が完
了したならば、プリフォーム内にエアを一次的に吹込ん
で、温調ヘッド９からシリフオーム周壁を強制的に離す
。この離れによって温調は自動的に停止する。When the temperature adjustment of the preform 3 by the temperature control head 9 is completed, air is primarily blown into the preform to forcibly separate the peripheral wall of the silicon ohm from the temperature control head 9. This separation automatically stops temperature control.
そして次に第２図に示すように、エアを吹込みながら型
閉じした吹込金型１の底型面まで、グリフオーム３を温
調ヘッド９をもって延伸する。Then, as shown in FIG. 2, the glyform 3 is stretched with the temperature control head 9 to the bottom mold surface of the closed blowing mold 1 while blowing air.
上記のようにして延伸を行ったならば更にエアを吹込み
、第３図に示すように吹込金型のキャビティ一杯に膨張
させて製品１０となす。After stretching as described above, air is further blown into the product 10 to expand it to fill the cavity of the blowing mold as shown in FIG.
そして成形後に吹込金型１を開き、また温調ヘッド９は
吹込コア４及びロッド８の上昇をもって元の位置に戻さ
れ、製品１０はネック型２に保持されて取出位置へと送
られる。After molding, the blow mold 1 is opened, and the temperature control head 9 is returned to its original position as the blow core 4 and rod 8 rise, and the product 10 is held in the neck mold 2 and sent to the take-out position.
この発明は上述のように、吹込金型１の上方に吹込コア
４と共に配設した温調ヘッド９をもって、ノリフオーム
３の温度調整と軸方向への延伸を行うものであるから、
プリフォームを温調ステーションから延伸吹込ステーシ
ョンへ移送する工程が不要となシ、またそのいずれか一
方のステーションを省略することができる。またプリフ
ォームの温調を射出成形時間にタイミングさせて行う必
要がなく、温調したプリフォームを直ちに延伸吹込成形
することができるため、最良の温度条件下にて延伸吹込
成形をなすことができるなどの特長を有する。As described above, this invention uses the temperature control head 9 disposed above the blow mold 1 together with the blow core 4 to adjust the temperature of the Noriform 3 and to stretch it in the axial direction.
There is no need for the step of transporting the preform from the temperature control station to the stretch blowing station, and either one of the stations can be omitted. In addition, there is no need to adjust the temperature of the preform at the same time as the injection molding time, and the preform after temperature adjustment can be immediately stretch-blow molded, allowing stretch-blow molding to be performed under the best temperature conditions. It has the following features.
図面はこの発明に係る延伸吹込成形方法の工程を順に示
すものであって、第１図は温調時の縦断面図、第２図は
延伸時の縦断面図、第３図は成形完了時の縦断面図であ
る。
１・・・・・・・・・・・・吹込金型
２・・・・・・・・・・・・ネック型
３・・・・・・・・・・・・ プリフォーム４・・・・
・・・・・・・・吹込コア
５・・・・・・・・・・・・吹込孔
７・・・・・・・・・・・・熱 媒 体８ ・・・・・
・・・・・・・ ロ ツ ド９・・・・・・・・・・・
・温調ヘッド１０・・・・・・・・・・・・製 品
特許出願人 青 木 固The drawings sequentially show the steps of the stretch blow molding method according to the present invention, in which FIG. 1 is a longitudinal cross-sectional view during temperature control, FIG. 2 is a longitudinal cross-sectional view during stretching, and FIG. 3 is a longitudinal cross-sectional view when molding is completed. FIG. 1...Blow mold 2...Neck mold 3...Preform 4...・
...Blow core 5 ...Blow hole 7 ...Heat medium 8 ...
・・・・・・・・・Rotsudo 9・・・・・・・・・・・・
・Temperature control head 10・・・・・・・・・Product patent applicant Takashi Aoki
Claims (1)
、熱媒通路布するロツＶを摺動自在に挿通するとともに
、ロッド先端部をプリフォーム内面と接する所要長さの
温調ヘッドに形成、シ、その温調ヘッドをもって吹込金
型の中央部に位置したプリフォームの温調と軸方向への
延伸とを行うことを特徴とする延伸吹込成形方法。A rod V with a heating medium path is slidably inserted into the center of the blowing core which is arranged above the blowing mold and can be raised and lowered freely, and a temperature control head of the required length is installed so that the rod tip comes into contact with the inner surface of the preform. A stretch blow molding method characterized by controlling the temperature of a preform located in the center of a blow mold and stretching it in the axial direction using its temperature control head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59037669A JPS60180814A (en) | 1984-02-29 | 1984-02-29 | Stretching blow molding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59037669A JPS60180814A (en) | 1984-02-29 | 1984-02-29 | Stretching blow molding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60180814A true JPS60180814A (en) | 1985-09-14 |
Family
ID=12504035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59037669A Pending JPS60180814A (en) | 1984-02-29 | 1984-02-29 | Stretching blow molding system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60180814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996008356A3 (en) * | 1994-09-16 | 1996-07-18 | Nissei Asb Machine Co Ltd | Injection stretch blow molding apparatus and method |
| WO2010031680A1 (en) * | 2008-09-18 | 2010-03-25 | Krones Ag | Temperature-controlled stretching rod |
| WO2011151016A1 (en) * | 2010-06-02 | 2011-12-08 | Röders Gmbh | Container stretch blow molding device and container stretch blow molding method |
-
1984
- 1984-02-29 JP JP59037669A patent/JPS60180814A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996008356A3 (en) * | 1994-09-16 | 1996-07-18 | Nissei Asb Machine Co Ltd | Injection stretch blow molding apparatus and method |
| WO2010031680A1 (en) * | 2008-09-18 | 2010-03-25 | Krones Ag | Temperature-controlled stretching rod |
| CN102159377A (en) * | 2008-09-18 | 2011-08-17 | 克罗内斯股份公司 | Temperature-controlled stretching rod |
| US8608471B2 (en) | 2008-09-18 | 2013-12-17 | Krones Ag | Temperature-controlled stretching rod |
| WO2011151016A1 (en) * | 2010-06-02 | 2011-12-08 | Röders Gmbh | Container stretch blow molding device and container stretch blow molding method |
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