JP3599851B2 - Manufacturing method of plastic bottle with handle - Google Patents

Manufacturing method of plastic bottle with handle Download PDF

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Publication number
JP3599851B2
JP3599851B2 JP24771295A JP24771295A JP3599851B2 JP 3599851 B2 JP3599851 B2 JP 3599851B2 JP 24771295 A JP24771295 A JP 24771295A JP 24771295 A JP24771295 A JP 24771295A JP 3599851 B2 JP3599851 B2 JP 3599851B2
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Prior art keywords
handle
blow
parison
manufacturing
plastic bottle
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JPH0985811A (en
Inventor
克 小川
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Mitsubishi Plastics Inc
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Mitsubishi Plastics Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/10—Handles
    • B65D23/104—Handles formed separately
    • B65D23/106—Handles formed separately the gripping region of the handle extending between the neck and the base of the bottle or jar and being located in a radial plane comprising the axis of the bottle or jar
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2017—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements outside the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/46—Knobs or handles, push-buttons, grips
    • B29L2031/463—Grips, handles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明はパリソンと取手体とをブロー成形型内に配置した後、パリソンを所望のボトル本体形状にブロー成形するとともに、ボトル本体と取手体とを一体化する取手付プラスチックボトルの製造方法に関する。
【０００２】
【従来の技術】
従来、パリソンと取手体とを解放状態のブロー成形型内に配置した後、ブロー成形型を閉じて、パリソンを所望のボトル本体形状にブロー成形するとともに、ボトル本体と取手体とを一体化する取手付プラスチックボトルの製造方法としては、パリソンと取手体とを所定の位置に隣接保持した状態で同時に搬送して解放状態のブロー成形型内に配置し、ブロー成形する方法、および取手体をパリソンとは別に搬送して、解放状態のブロー成形型内の取手体嵌合溝に取手体を移し変えて仮止め装着しておき、ブロー成形する方法などが提案されている。
【０００３】
【発明が解決しようとする課題】
しかし、前者のパリソンと取手体とを同時に搬送する方法では、両者の相対位置およびブロー成形型との位置関係を所定位置に調整するのが困難であり、また後者の取手体をパリソンとは別に搬送して、ブロー成形型内の取手体嵌合溝に移し変えて仮止め装着する方法では、ブロー成形型内の取手体嵌合溝という狭い目標に正しく移し変えるのが難しいという問題があった。
【０００４】
本発明は、調整が容易で成形サイクルを向上できる取手付プラスチックボトルの製造方法を提供せんとするものである。
【０００５】
【課題を解決するための手段】
本発明は、パリソンと取手体とをブロー成形型内に配置した後、前記パリソンを所望のボトル本体形状にブロー成形するとともに、ボトル本体と取手体とを一体化する取手付プラスチックボトルの製造方法において、
（１）別工程で製造され、端部に係止部を有する取手体を、掴み式保持具により掴んで、所定位置の差込み式保持具まで搬送し、該差込み式保持具に前記取手体の係止部を差し込む工程と、
（２）取手体を差し込まれた差込み式保持具を移動させて、前記取手体を開放状態のブロー成形型内の取手セット部に位置させる工程と、
（３）その状態で、前記ブロー成形型を閉じて、ブロー成形する工程
を有する取手付プラスチックボトルの製造方法である。
【０００６】
取手体を掴み式保持具により掴んで、差込み式保持具まで搬送し取手体の係止部を差し込み、その後は差込み式保持具により取手セット部に位置させ、ブロー成形型を閉じるという工程を有するので、ブロー成形型を閉じるまで取手体を差込み式保持具により保持でき、また搬送を２分割しているので、搬送とブロー成形とのタイミングの調整が行ない易い。
【０００７】
【発明の実施の形態】
以下、本発明を図面に基づき説明する。
【０００８】
図１は、本発明の取手付プラスチックボトルの製造方法を実施するための装置の一例を示す概略平面図、図２は同じく概略正面図、図３はブロー成形する工程を説明する概略断面図である。
【０００９】
本発明は、図１〜３に示すように、パリソン１と取手体２とをブロー成形型３内に配置した後、前記パリソン１を所望のボトル本体４形状にブロー成形するとともに、ボトル本体４と取手体２とを一体化する取手付プラスチックボトルの製造方法において、
（１）別工程で製造され、端部に係止部２１を有する取手体２を、掴み式保持具５により掴んで、所定位置の差込み式保持具６まで搬送し、該差込み式保持具６に前記取手体２の係止部２１を差し込む工程と、
（２）取手体２を差し込まれた差込み式保持具６を移動させて、前記取手体２を開放状態のブロー成形型３内の取手セット部３１に位置させる工程と、
（３）その状態で、前記ブロー成形型３を閉じて、ブロー成形する工程
を有する取手付プラスチックボトルの製造方法である。
【００１０】
パリソン１を保持するパリソン保持具７は、パリソン支持台７１の上部に回転可能なマンドレル７２を備えたもので、パリソン１にマンドレル７２を差し込んだ状態でマンドレル７２により回転させながら、図示しない加熱ゾーンを通過させて成形温度に加熱して、開放状態のブロー成形型３内に搬送し、保持する。
【００１１】
掴み式保持具５は例えば、アーム５１の先端に二股状の掴み部５２を備え、掴み部５２を所定の位置に移動させる駆動部５３を有するものである。
【００１２】
差込み式保持具６は例えばアーム６１の先端に１〜数本のピン６２を植え付けたもので、ピン６２を取手体２の係止部２１に差し込んで保持でき、さらにピン６２を所定の位置に移動させる駆動部６３を有するものである。
【００１３】
これらの装置を用いて、本発明の取手付プラスチックボトルの製造方法を実施するためには、有底状のパリソン１と取手体２とをそれぞれ別工程で射出成形し、パリソン１は倒立状態でその口部にパリソン保持具７のマンドレル７２を挿入して、図示しない加熱ゾーンに搬送し、マンドレル７２を自転させて成形温度に加熱して、取手体２とは別個に開放状態のブロー成形型３内に搬送し、ブロー成形まで保持する。
【００１４】
取手体２は、例えば握持部２０の上下端から嵌着部２２を延出形成してあり、握持部２０の下端には、前記差込み式保持具６のピン６２が挿入乃至は係合できる孔状あるいは溝状などの係止部２１を形成してあり、嵌着部２２の先端には突起２３が形成してある。
【００１５】
取手体２は、図示しないが例えば係止部２１が下になるように直立させて整列させた状態で所定位置に供給し、その握持部２０を、掴み式保持具５の二股状の掴み部５２によって挟むように掴み、駆動部５３により差込み式保持具６が待機している位置まで搬送する。
【００１６】
搬送された取手体２の係止部２１に差込み式保持具６のピン６２を差し込んで保持させた状態で、掴み部５２を離し、掴み式保持具５をもとの位置まで復帰させる。
【００１７】
取手体２を保持した差込み式保持具６を駆動部６３によって移動させて、前記取手体２を開放状態のブロー成形型３内の取手セット部３１に位置させる。
【００１８】
取手セット部３１は半割り状のブロー成形型３の合せ面に取手体２の輪郭に合わせて少し大きめに彫り込んだ窪み状のもので、差込み式保持具６のピン６２が嵌まり込む凹部３１０も含んでいる。
【００１９】
その状態で、前記ブロー成形型３を閉じて、前記パリソン１中に圧力流体を吹き込んでブロー成形すると、パリソン１はブロー成形型３内面に沿って膨脹してボトル本体４が形成されると同時に、取手セット部３１からブロー成形型３内に突出した突起２３に壁面が巻き付くようにしてボトル本体４と取手体２とを一体化する事ができる。
【００２０】
差込み式保持具６はブロー成形型３を閉じてから、ブロー成形開始までの間にピン６２を取手体２の係止部２１から下方に抜いて、駆動部６３によって移動させて元の位置に復帰すればよいが、ブロー成形型３を閉じると同時に復帰させるのが最も成形サイクルが早くなるので好ましい。
【００２１】
ブロー成形が終了すれば、ボトル本体４を冷却固化させてからブロー成形型３を再び開放して、取手体２を取り付けたボトルを取り出すことができる。
【００２２】
【発明の効果】
本発明はパリソンと取手体とをブロー成形型内に配置した後、前記パリソンを所望のボトル本体形状にブロー成形するとともに、ボトル本体と取手体とを一体化する取手付プラスチックボトルの製造方法において、
（１）別工程で製造され、端部に係止部を有する取手体を、掴み式保持具により掴んで、所定位置の差込み式保持具まで搬送し、該差込み式保持具に前記取手体の係止部を差し込む工程と、
（２）取手体を差し込まれた差込み式保持具を移動させて、前記取手体を開放状態のブロー成形型内の取手セット部に位置させる工程と、
（３）その状態で、前記ブロー成形型を閉じて、ブロー成形する工程
を有する取手付プラスチックボトルの製造方法であるから、ブロー成形型を閉じるまで取手体を差込み式保持具により保持でき、また搬送を２分割しているので、搬送とブロー成形とのタイミングの調整が行ない易いという効果を奏する。
【図面の簡単な説明】
【図１】本発明の取手付プラスチックボトルの製造方法を実施するための装置の一例を示す概略平面図
【図２】本発明の取手付プラスチックボトルの製造方法を実施するための装置の一例を示す概略正面図
【図３】ブロー成形する工程を説明する概略断面図
【符号の説明】
１ パリソン
２ 取手体
２１ 係止部
３ ブロー成形型
３１ 取手セット部
４ ボトル本体
５ 掴み式保持具
６ 差込み式保持具[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a plastic bottle with a handle, in which after a parison and a handle are arranged in a blow mold, the parison is blow-molded into a desired bottle body shape and the bottle body and the handle are integrated.
[0002]
[Prior art]
Conventionally, after disposing a parison and a handle in a blow mold in an open state, the blow mold is closed, the parison is blow-molded into a desired bottle body shape, and the bottle body and the handle body are integrated. As a method for manufacturing a plastic bottle with a handle, there are a method in which a parison and a handle body are simultaneously conveyed while being held adjacent to a predetermined position, placed in a blow mold in an open state, and blow-molded. Separately, a method has been proposed in which a handle body is transferred to a handle body fitting groove in a blow-molding die in an open state, temporarily attached, and then blow-molded.
[0003]
[Problems to be solved by the invention]
However, in the former method of simultaneously transporting the parison and the handle, it is difficult to adjust the relative positions of the two and the positional relationship with the blow mold to predetermined positions, and the latter handle is separated from the parison. In the method of transferring, transferring to the handle body fitting groove in the blow mold, and temporarily mounting, there was a problem that it was difficult to correctly transfer to the narrow target of the handle body fitting groove in the blow mold. .
[0004]
An object of the present invention is to provide a method of manufacturing a plastic bottle with a handle that can be easily adjusted and can improve a molding cycle.
[0005]
[Means for Solving the Problems]
The present invention provides a method for manufacturing a plastic bottle with a handle, in which after the parison and the handle are arranged in a blow mold, the parison is blow-molded into a desired bottle body shape, and the bottle body and the handle are integrated. At
(1) A handle body manufactured in a separate process and having a locking portion at an end is gripped by a grip-type holder and transported to a plug-in holder at a predetermined position. A step of inserting a locking portion,
(2) moving the insertion-type holder into which the handle is inserted, and positioning the handle in the handle set portion in the blow-molding die in an open state;
(3) A method for manufacturing a plastic bottle with a handle, which comprises a step of closing the blow mold and performing blow molding in that state.
[0006]
It has a process in which the handle body is gripped by the grip-type holder, transported to the plug-in type holder, the locking portion of the handle body is inserted, and thereafter, the plug-in type holder is positioned on the handle set portion, and the blow mold is closed. Therefore, the handle body can be held by the insert-type holder until the blow mold is closed, and since the conveyance is divided into two, the timing of the conveyance and the blow molding can be easily adjusted.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings.
[0008]
FIG. 1 is a schematic plan view showing an example of an apparatus for carrying out the method for manufacturing a plastic bottle with a handle of the present invention, FIG. 2 is a schematic front view thereof, and FIG. 3 is a schematic cross-sectional view for explaining a process of blow molding. is there.
[0009]
According to the present invention, as shown in FIGS. 1 to 3, after the parison 1 and the handle body 2 are arranged in the blow mold 3, the parison 1 is blow-molded into a desired bottle body 4 shape, and In the method for manufacturing a plastic bottle with a handle that integrates the handle and the handle body 2,
(1) A handle 2 manufactured in a separate process and having a locking portion 21 at an end is gripped by a gripping type holder 5 and transported to a plug-in type holder 6 at a predetermined position. Inserting the locking portion 21 of the handle body 2 into the
(2) a step of moving the insertion-type holding tool 6 into which the handle body 2 is inserted, and positioning the handle body 2 on the handle set portion 31 in the blow molding die 3 in an open state;
(3) A method for manufacturing a plastic bottle with a handle, comprising closing the blow mold 3 in that state and performing blow molding.
[0010]
The parison holder 7 for holding the parison 1 is provided with a rotatable mandrel 72 on the upper part of the parison support 71. The parison 1 is rotated by the mandrel 72 with the mandrel 72 inserted into the parison 1. And heated to the molding temperature, conveyed into the blow mold 3 in the open state, and held.
[0011]
The grip holder 5 has, for example, a bifurcated grip section 52 at the tip of an arm 51 and a drive section 53 for moving the grip section 52 to a predetermined position.
[0012]
The insertion-type holding tool 6 has, for example, one or several pins 62 planted at the tip of an arm 61. The pin 62 can be inserted into the locking portion 21 of the handle body 2 and held, and the pin 62 can be placed at a predetermined position. It has a driving unit 63 for moving.
[0013]
In order to carry out the method for manufacturing a plastic bottle with a handle of the present invention using these devices, the bottomed parison 1 and the handle body 2 are injection-molded in separate steps, and the parison 1 is in an inverted state. The mandrel 72 of the parison holder 7 is inserted into the mouth thereof, conveyed to a heating zone (not shown), the mandrel 72 is rotated and heated to the molding temperature, and the blow mold is opened separately from the handle 2. 3 and held until blow molding.
[0014]
The handle 2 has, for example, a fitting portion 22 extending from the upper and lower ends of the grip portion 20, and the pin 62 of the plug-in type holder 6 is inserted or engaged with the lower end of the grip portion 20. An engaging portion 21 having a hole shape or a groove shape is formed, and a projection 23 is formed at the tip of the fitting portion 22.
[0015]
Although not shown, the handle body 2 is supplied to a predetermined position in a state where the handle portion 20 is upright and aligned so that, for example, the locking portion 21 faces down, and the grip portion 20 is gripped in a bifurcated manner by the gripping type holder 5. It is gripped so as to be sandwiched by the section 52, and is transported by the drive section 53 to a position where the insertion type holder 6 is on standby.
[0016]
With the pin 62 of the plug-in type holder 6 inserted and held in the engaging portion 21 of the handle 2 conveyed, the gripper 52 is released, and the holder 5 is returned to the original position.
[0017]
The insertion-type holder 6 holding the handle body 2 is moved by the drive unit 63 to position the handle body 2 on the handle set unit 31 in the blow mold 3 in an open state.
[0018]
The handle set portion 31 is a recessed shape which is slightly larger than the shape of the handle body 2 and is engraved on the mating surface of the half-split blow molding die 3, and the recess 310 into which the pin 62 of the plug-in holder 6 fits. Also included.
[0019]
In this state, when the blow mold 3 is closed and a blow fluid is blown into the parison 1 to perform blow molding, the parison 1 expands along the inner surface of the blow mold 3 to form the bottle main body 4. The bottle body 4 and the handle body 2 can be integrated with each other so that the wall surface is wound around the projection 23 protruding from the handle setting part 31 into the blow mold 3.
[0020]
The plug-in type holder 6 pulls the pin 62 downward from the locking portion 21 of the handle body 2 between the time the blow molding die 3 is closed and the time the blow molding is started, and moves the pin 62 to the original position by the driving portion 63. It is only necessary to return, but it is preferable to return at the same time as closing the blow mold 3 because the molding cycle is the fastest.
[0021]
When the blow molding is completed, the bottle main body 4 is cooled and solidified, and then the blow molding die 3 is opened again to take out the bottle to which the handle body 2 is attached.
[0022]
【The invention's effect】
The present invention relates to a method for manufacturing a plastic bottle with a handle, in which a parison and a handle are arranged in a blow mold, and then the parison is blow-molded into a desired bottle body shape, and the bottle body and the handle are integrated. ,
(1) A handle body manufactured in a separate process and having a locking portion at an end is gripped by a grip-type holder and transported to a plug-in holder at a predetermined position. A step of inserting a locking portion,
(2) moving the insertion-type holder into which the handle is inserted, and positioning the handle in the handle set portion in the blow-molding die in an open state;
(3) In this state, since the method for manufacturing a plastic bottle with a handle includes a step of closing the blow mold and performing blow molding, the handle body can be held by the insertion-type holder until the blow mold is closed. Since the conveyance is divided into two parts, it is easy to adjust the timing between the conveyance and the blow molding.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an example of an apparatus for implementing a method of manufacturing a plastic bottle with a handle of the present invention. FIG. 2 is an example of an apparatus for implementing a method of manufacturing a plastic bottle with a handle of the present invention. FIG. 3 is a schematic front view showing a schematic cross-sectional view illustrating a process of blow molding.
DESCRIPTION OF SYMBOLS 1 Parison 2 Handle 21 Locking part 3 Blow mold 31 Handle setting part 4 Bottle body 5 Gripping type holder 6 Plug-in type holder

Claims (1)

パリソンと取手体とをブロー成形型内に配置した後、前記パリソンを所望のボトル本体形状にブロー成形するとともに、ボトル本体と取手体とを一体化する取手付プラスチックボトルの製造方法において、
（１）別工程で製造され、端部に係止部を有する取手体を、掴み式保持具により掴んで、所定位置の差込み式保持具まで搬送し、該差込み式保持具に前記取手体の係止部を差し込む工程と、
（２）取手体を差し込まれた差込み式保持具を移動させて、前記取手体を開放状態のブロー成形型内の取手セット部に位置させる工程と、
（３）その状態で、前記ブロー成形型を閉じて、ブロー成形する工程
を有する取手付プラスチックボトルの製造方法。After arranging the parison and the handle in the blow mold, the parison is blow-molded into a desired bottle body shape, and a method of manufacturing a plastic bottle with a handle that integrates the bottle body and the handle is performed.
(1) A handle body manufactured in a separate process and having a locking portion at an end is gripped by a grip-type holder and transported to a plug-in holder at a predetermined position. A step of inserting a locking portion,
(2) moving the insertion-type holder into which the handle is inserted, and positioning the handle in the handle set portion in the blow-molding die in an open state;
(3) A method for manufacturing a plastic bottle with a handle, comprising closing the blow mold and performing blow molding in that state.
JP24771295A 1995-09-26 1995-09-26 Manufacturing method of plastic bottle with handle Expired - Lifetime JP3599851B2 (en)

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US10335992B2 (en) 2011-08-22 2019-07-02 Nissei Asb Machine Co., Ltd. Blow-molding method for container with handle and blow-molding equipment
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