JP3459426B2 - Molding method for bent products made of synthetic resin - Google Patents
Molding method for bent products made of synthetic resinInfo
- Publication number
- JP3459426B2 JP3459426B2 JP11635791A JP11635791A JP3459426B2 JP 3459426 B2 JP3459426 B2 JP 3459426B2 JP 11635791 A JP11635791 A JP 11635791A JP 11635791 A JP11635791 A JP 11635791A JP 3459426 B2 JP3459426 B2 JP 3459426B2
- Authority
- JP
- Japan
- Prior art keywords
- parison
- mold
- bent
- core rod
- molding
- 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.)
- Expired - Lifetime
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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4242—Means for deforming the parison prior to the blowing operation
-
- 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
- B29C49/4242—Means for deforming the parison prior to the blowing operation
- B29C49/42421—Means for deforming the parison prior to the blowing operation before laying into the mould
- B29C49/42422—Means for deforming the parison prior to the blowing operation before laying into the mould by the preform transporting 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4242—Means for deforming the parison prior to the blowing operation
- B29C49/4244—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould
- B29C49/42454—The mould opening plane being vertical
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)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、製品の上部が、横方向
に折曲げられた合成樹脂製折曲がり製品のブローの成型
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blow molding method for a synthetic resin bent product in which the upper part of the product is bent in the lateral direction.
【０００２】[0002]
【従来の技術】従来、頭部が横方向に折曲げられた折曲
がり製品である首曲がりボトルの成形方法として、パリ
ソンを大径に形成し、そして、このパリソンを、キャビ
ティの形状が、首曲がりボトルの形に形成された金型で
挟み付け、そのパリソンの不要な部分を、金型のキャビ
ティ周縁部で食い切り、残されたパリソンをブロー成形
して、首曲がりボトルを成形する方法がある。2. Description of the Related Art Conventionally, a parison having a large diameter is formed as a method for molding a neck-bending bottle, which is a bent product in which the head is bent in the lateral direction. There is a method of forming a curved bottle by sandwiching it with a mold formed in the shape of a curved bottle, cutting off the unnecessary part of the parison with the peripheral edge of the cavity of the mold, and blow molding the remaining parison. .
【０００３】前記成形方法で成形された首曲がりボトル
は、金型でパリソンの不要部分を食い切るので、パーテ
ィングラインに、バリが突出し、製品の商品価値を低下
させるものである。The neck-bending bottle molded by the above-mentioned molding method cuts off unnecessary parts of the parison with a mold, so that burrs are projected on the parting line to reduce the commercial value of the product.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、前記事項に
鑑みなされたものであり、製品の外面のパーティングラ
インに、バリ等が発生せず、商品価値の高い折曲がり製
品のブロー成型方法とすることを技術的課題とする。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above matters, and a method for blow molding a bent product having high commercial value without causing burrs or the like on the parting line on the outer surface of the product. Is a technical issue.
【０００５】[0005]
【課題を解決するための手段】第１の発明は、ダイス１
より押出されたパリソン２内に、折曲げ用の芯棒３２を
挿入し、この芯棒３２を、その先端部３３を旋回の中心
として旋回させて、前記パリソン２を、前記芯棒３２の
先端部３３付近で折曲げて、パリソン２をキャビティ９
に合致する位置に移動させて、金型６を型締めし、前記
芯棒３２を前記パリソン２から抜出した後、金型６の底
ブッシュ１１を閉ざしてブロー成型する合成樹脂製折曲
がり製品の成型方法である。A first aspect of the present invention is a die 1
The core rod 32 for bending is inserted into the more extruded parison 2, and the core rod 32 is swung with its tip portion 33 as the center of swiveling to move the parison 2 to the tip of the core rod 32. Bend near the part 33 to place the parison 2 in the cavity 9
Of the bent portion made of a synthetic resin which is blow-molded by closing the bottom bush 11 of the die 6 after the core rod 32 is pulled out from the parison 2. It is a molding method.
【０００６】[0006]
【０００７】第２の発明は、ダイス１より押出されたパ
リソン２を、一方の金型８に設けたパリソンガイド部１
２で押圧してパリソン２を折曲げて、折曲がったパリソ
ン２を形成すると共に、一方の金型８と他方の金型７
で、前記折曲がったパリソンを挟み込んでブロー成型す
る合成樹脂製折曲がり製品の成型方法である。A second aspect of the invention is a parison guide portion 1 in which a parison 2 extruded from a die 1 is provided in one of the molds 8.
The parison 2 is bent by pressing with 2 to form the bent parison 2, and at the same time, the die 8 on one side and the die 7 on the other side are formed.
Then, it is a method for molding a bent product made of synthetic resin, in which the bent parison is sandwiched and blow-molded.
【０００８】[0008]
【作 用】本発明は、ダイス１より押し出されたパリソ
ン２を折曲げて、金型で挟み込んでブロー成形するの
で、パリソンに不用部分が発生しない。したがって、パ
リソンを金型で食い切らず、パーティングラインにバリ
等も発生しない。[Operation] In the present invention, since the parison 2 extruded from the die 1 is bent, sandwiched by the mold and blow-molded, the parison does not have an unnecessary portion. Therefore, the parison is not completely covered by the mold, and burrs do not occur on the parting line.
【０００９】[0009]
【実施例】図１は、本発明の１実施例の説明用の図であ
り、この図１に示された成型機は、インデックスタイプ
の成型機である。この成型機は、バー２１により進退可
能に対向して設けられた金型取付盤２０（図１では一方
の金型取付盤等のみ図示）の内側に金型６を対向して設
けてある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining one embodiment of the present invention. The molding machine shown in FIG. 1 is an index type molding machine. In this molding machine, a mold 6 is provided inside a mold mounting plate 20 (only one mold mounting plate or the like is shown in FIG. 1) provided so as to be able to move forward and backward by a bar 21.
【００１０】前記金型６のキャビティ９は、成型される
首曲がりボトルの口頭部を成型する部分は、垂直方向に
延ばして設けてあり、首曲がりボトルの胴部を成型する
キャビティ９は、傾斜して設けてある。そして、この金
型６には前記キャビティ９の底部側に接して、底ブッシ
ュ１１がパーティングライン１０に垂直方向である前後
方向にスライドできるように設けてある。In the cavity 9 of the mold 6, a portion for molding the mouth of the neck-bending bottle to be molded is provided so as to extend in the vertical direction, and the cavity 9 for molding the body of the neck-bending bottle is inclined. Is provided. A bottom bush 11 is provided in the mold 6 so as to be in contact with the bottom side of the cavity 9 so as to be slidable in the front-rear direction which is a direction perpendicular to the parting line 10.
【００１１】また、前記金型取付盤２０間には、前記パ
ーティングライン１０と平行方向で上下方向に延びる円
弧状のガイドレール２５が設けてある。この円弧状ガイ
ドレール２５の円弧の中心は、前記金型６に形成された
キャビティ９の傾斜した部分の上部を中心とするように
して形成してある。Further, between the mold mounting plates 20, arcuate guide rails 25 extending in a vertical direction in a direction parallel to the parting line 10 are provided. The center of the arc of the arc-shaped guide rail 25 is formed so as to be centered on the upper portion of the inclined portion of the cavity 9 formed in the mold 6.
【００１２】そして、前記ガイドレール２５には、保持
体２６がローラ２７で摺動可能に装着してある。この保
持体２６には、第一エアシリンダ３０が設けてある。ま
た、折り曲げ用の芯棒３２が、前記ガイドレール２５の
円弧の中心となる位置に向かって進退できるようにして
設けてある。A holding member 26 is slidably mounted on the guide rail 25 by a roller 27. The holder 26 is provided with a first air cylinder 30. Further, a bending core rod 32 is provided so as to be able to advance and retreat toward a position serving as the center of the arc of the guide rail 25.
【００１３】そして、この芯棒３２は、前記第一エアシ
リンダ３０によって進退する第一ロッド３１に連結され
て進退できるように形成してある。The core rod 32 is connected to the first rod 31 which moves forward and backward by the first air cylinder 30, and is formed so as to move forward and backward.
【００１４】また、前記ガイドレール２５の上端部に
は、第二エアシリンダ４０が設けてあり、この第二エア
シリンダ４０の第二ロッド４１の先端部が、前記保持体
２６に揺動可能に軸着されている。そして、前記保持体
２６は、前記第二エアシリンダ４０の第二ロッド４１に
よって、ガイドレール２５に従って旋回できるように形
成してある。A second air cylinder 40 is provided at an upper end portion of the guide rail 25, and a tip end portion of a second rod 41 of the second air cylinder 40 can swing on the holding body 26. It is pivoted. Further, the holding body 26 is formed so as to be able to turn along the guide rail 25 by the second rod 41 of the second air cylinder 40.
【００１５】前記成型機で首曲がりボトルを成型するに
は、第二エアシリンダ４０の第二ロッド４１を進出させ
て、保持体２６をガイドレール２５の下端部に位置さ
せ、第一エアシリンダ３０の第一ロッド３１を後退させ
て折曲げ用の芯棒３２を後退させて待機させる。To mold a neck-bend bottle with the molding machine, the second rod 41 of the second air cylinder 40 is advanced to position the holder 26 at the lower end of the guide rail 25, and the first air cylinder 30 The first rod 31 is retracted and the bending core rod 32 is retracted to stand by.
【００１６】そして、ダイス１より合成樹脂のパリソン
２を押し出す。そして、第一エアシリンダ３０によっ
て、前記芯棒３２を進出させ、この芯棒３２を前記パリ
ソン２内に挿入する。Then, the parison 2 made of synthetic resin is extruded from the die 1. Then, the core rod 32 is advanced by the first air cylinder 30, and the core rod 32 is inserted into the parison 2.
【００１７】次に、第二エアシリンダ４０の第二ロッド
４１を後退させ、保持体２６を旋回させて上方に引き上
げる。そうすると、前記保持体２６に設けた芯棒３２
は、その先端部３３を旋回の中心として旋回する。Next, the second rod 41 of the second air cylinder 40 is retracted, the holder 26 is swung, and the holder 26 is pulled upward. Then, the core rod 32 provided on the holding body 26.
Turns with its tip 33 as the center of turning.
【００１８】そうすると、前記パリソン２は、前記芯棒
３２の先端部３３付近で折曲げられ、パリソン２は、キ
ャビティ９と合致する位置に移動する。そこで、金型６
を閉じて型締めし、前記芯棒を前記パリソン２から後退
させて抜出した後、金型６の底ブッシュ１１を閉ざす。Then, the parison 2 is bent near the tip portion 33 of the core rod 32, and the parison 2 moves to a position matching the cavity 9. Therefore, mold 6
Is closed and the mold is clamped, the core rod is retracted from the parison 2 and pulled out, and then the bottom bush 11 of the mold 6 is closed.
【００１９】そして、パリソン２内にエヤを吹き込んで
合成樹脂製首曲がりボトルを成型する。Then, air is blown into the parison 2 to mold a neck bottle made of synthetic resin.
【００２０】前記実施例は、首曲がりボトルを成型する
ものであるが、本発明はパリソンを折曲げる屈曲製品の
ブローの成型であれば、他の製品にも実施できるもので
ある。In the above embodiment, a neck-bending bottle is molded, but the present invention can be applied to other products as long as it is a blow molding of a bent product for bending a parison.
【００２１】図２は、本発明の別の実施例の説明用の図
であり、この図に示された成形機は、インデックスタイ
プの成形機である。FIG. 2 is a view for explaining another embodiment of the present invention, and the molding machine shown in this drawing is an index type molding machine.
【００２２】この成形機は、バー２１に対向して装着さ
れた金型取付盤２０，２０を備えており、この金型取付
盤２０，２０は、ダイス１の設けられた中央部に対し
て、対向して、進退するように装着されている。This molding machine is equipped with mold mounting plates 20 and 20 which are mounted so as to face the bar 21, and the mold mounting plates 20 and 20 are mounted with respect to the central portion where the die 1 is provided. , Are installed so that they face each other and move back and forth.
【００２３】前記金型取付盤２０，２０の内側には、一
方の金型８と他方の金型７が対向して設けてある。前記
金型８，７は、成形される首曲がりボトル４５の口頭部
を成形する部分は、対向して垂直方向に延ばして設けて
ある。Inside the mold mounting plates 20 and 20, one mold 8 and the other mold 7 are provided so as to face each other. The molds 8 and 7 are provided so that the portions for molding the mouth of the neck-bending bottle 45 to be molded are opposed to each other and extend in the vertical direction.
【００２４】前記首曲がりボトル４５の胴部を成形する
キャビティ９の設けられた部分は、パーティングライン
１０が、一方の金型８の下部が中央部側に突出するよう
に傾斜して設けてある。The part where the cavity 9 for forming the body part of the neck-bending bottle 45 is provided is such that the parting line 10 is inclined so that the lower part of one mold 8 projects toward the central part. is there.
【００２５】そして、一方の金型８に設けた底ブッシュ
１１の前面は、図３に示すように、縦長の凹所として形
成したパリソンガイド部１２に形成してある。As shown in FIG. 3, the front surface of the bottom bush 11 provided on one of the molds 8 is formed in a parison guide portion 12 formed as a vertically elongated recess.
【００２６】前記成形機による成形は、まず、開かれた
金型８，７間に、ダイス１よりパリソン２を押出し、パ
リソン２の下端部が前記一方の金型８のパリソンガイド
部１２の前面に位置するまで押出す。In the molding by the molding machine, first, the parison 2 is extruded from the die 1 between the opened molds 8 and 7, and the lower end of the parison 2 is the front surface of the parison guide portion 12 of the one mold 8. Extrude until it is located at.
【００２７】次に、金型８，７を中央部に向かって前進
させる。そうすると、パリソン２は一方の金型８のパリ
ソンガイド部１２で下部を押されて折曲げられる。この
折曲げられたパリソン２を、金型８，７のキャビティ９
に挟み込んで型締めし、パリサン２内にエヤを吹き込ん
で合成樹脂製首曲がりボトル４５を成形する。Next, the molds 8 and 7 are advanced toward the central portion. Then, the parison 2 is bent by pressing the lower portion by the parison guide portion 12 of the one die 8. The folded parison 2 is put into the cavity 9 of the molds 8 and 7.
Then, the mold is clamped, and air is blown into the Parisan 2 to mold the synthetic resin neck-bending bottle 45.
【００２８】[0028]
【発明の効果】本発明は、ダイスより押出されたパリソ
ンを折曲げて、金型に挟み込むので、パリソンはキャビ
ティの形状に合致した形に折曲げられて、金型に挟み込
まれる。According to the present invention, since the parison extruded from the die is bent and sandwiched in the mold, the parison is folded in a shape that matches the shape of the cavity and sandwiched in the mold.
【００２９】したがって、パリソンの底部以外の部分
が、金型によって食い切られず、製品のパーティングラ
インにバリ等が発生せず、商品価値の高い合成樹脂製折
曲がり製品をブロー成形することができる。Therefore, the parts other than the bottom of the parison are not completely cut off by the mold, burrs are not generated in the parting line of the product, and the bent product made of synthetic resin having high commercial value can be blow-molded. .
【００３０】とくに、第１の発明では、パリソンの所望
の部分を正確に折曲げることが可能であり、第２の発明
では、パリソンの折曲げと同時に、金型の型締めを行な
えるので、成型時間が長くならないと共に、パリソンの
折曲げを、金型で行なうので、パリソン折曲げ用の別の
装置を必要とせず、成型機の構成が複雑なものとならな
い。Particularly, in the first invention, a desired portion of the parison can be bent accurately, and in the second invention, the mold can be clamped at the same time when the parison is bent. The molding time does not become long, and since the parison is bent using a mold, a separate device for bending the parison is not required, and the structure of the molding machine is not complicated.
【図１】本発明の１実施例の説明用の図である。FIG. 1 is a diagram for explaining one embodiment of the present invention.
【図２】本発明の別の実施例の説明用の図である。FIG. 2 is a diagram for explaining another embodiment of the present invention.
【図３】図２の実施例で使用されているパリソンガイド
部を示す図である。FIG. 3 is a diagram showing a parison guide portion used in the embodiment of FIG.
１．ダイス ２．パリソン ６．金型 ７．他方の金型 ８．一方の金型 ９．キャビティ １１．底ブッシュ １２．パリソンガイド部 ３２．芯棒 ３３．先端部 1. dice 2. Parison 6. Mold 7. The other mold 8. One mold 9. cavity 11. Bottom bush 12. Parison Guide Department 32. Core rod 33. Tip
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−193324（ＪＰ，Ａ) 特開 昭52−73967（ＪＰ，Ａ) 特開 昭55−146717（ＪＰ，Ａ) 特開 昭57−128517（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 49/04 B29C 49/42 B29C 49/48 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-57-193324 (JP, A) JP-A-52-73967 (JP, A) JP-A-55-146717 (JP, A) JP-A-57- 128517 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) B29C 49/04 B29C 49/42 B29C 49/48
Claims (2)
折曲げ用の芯棒３２を挿入し、この芯棒３２を、その先
端部３３を旋回の中心として旋回させて、前記パリソン
２を、前記芯棒３２の先端部３３付近で折曲げて、パリ
ソン２をキャビティ９に合致する位置に移動させて、金
型６を型締めし、前記芯棒３２を前記パリソン２から抜
出した後、金型６の底ブッシュ１１を閉ざしてブロー成
型する合成樹脂製折曲がり製品の成型方法。1. A parison 2 extruded from a die 1,
A core rod 32 for bending is inserted, and the core rod 32 is rotated with its tip portion 33 as the center of rotation, and the parison 2 is bent near the tip portion 33 of the core rod 32 to form a parison. 2 is moved to a position corresponding to the cavity 9, the mold 6 is clamped, the core rod 32 is pulled out from the parison 2, and then the bottom bush 11 of the mold 6 is closed to perform blow molding. Bending product molding method.
方の金型８に設けたパリソンガイド部１２で押圧してパ
リソン２を折曲げて、折曲がったパリソン２を形成する
と共に、一方の金型８と他方の金型７で、前記折曲がっ
たパリソンを挟み込んでブロー成型する合成樹脂製折曲
がり製品の成型方法。2. A parison 2 extruded from a die 1 is pressed by a parison guide portion 12 provided on one mold 8 to bend the parison 2 to form a bent parison 2 and A method for molding a bent product made of synthetic resin, in which the bent parison is sandwiched between a mold 8 and the other mold 7 and blow-molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11635791A JP3459426B2 (en) | 1991-02-28 | 1991-05-21 | Molding method for bent products made of synthetic resin |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3482691 | 1991-02-28 | ||
| JP3-34826 | 1991-02-28 | ||
| JP11635791A JP3459426B2 (en) | 1991-02-28 | 1991-05-21 | Molding method for bent products made of synthetic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04323018A JPH04323018A (en) | 1992-11-12 |
| JP3459426B2 true JP3459426B2 (en) | 2003-10-20 |
Family
ID=26373681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11635791A Expired - Lifetime JP3459426B2 (en) | 1991-02-28 | 1991-05-21 | Molding method for bent products made of synthetic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3459426B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6944305B2 (en) * | 2017-08-10 | 2021-10-06 | 小林製薬株式会社 | Container manufacturing method and container manufacturing equipment |
| JP7143505B2 (en) * | 2019-02-21 | 2022-09-28 | 日精エー・エス・ビー機械株式会社 | Manufacturing method of curved neck container |
-
1991
- 1991-05-21 JP JP11635791A patent/JP3459426B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04323018A (en) | 1992-11-12 |
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