JPH0675917B2 - Hollow molding device for articles with bent parts - Google Patents

Hollow molding device for articles with bent parts

Info

Publication number
JPH0675917B2
JPH0675917B2 JP1180425A JP18042589A JPH0675917B2 JP H0675917 B2 JPH0675917 B2 JP H0675917B2 JP 1180425 A JP1180425 A JP 1180425A JP 18042589 A JP18042589 A JP 18042589A JP H0675917 B2 JPH0675917 B2 JP H0675917B2
Authority
JP
Japan
Prior art keywords
parison
split
molding
opening
closing
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
Application number
JP1180425A
Other languages
Japanese (ja)
Other versions
JPH0345330A (en
Inventor
洋治 荒木
Original Assignee
株式会社アラキ金型製作所
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 株式会社アラキ金型製作所 filed Critical 株式会社アラキ金型製作所
Priority to JP1180425A priority Critical patent/JPH0675917B2/en
Publication of JPH0345330A publication Critical patent/JPH0345330A/en
Publication of JPH0675917B2 publication Critical patent/JPH0675917B2/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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • 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
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4807—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by movable mould parts in the mould halves
    • 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
    • B29C49/04—Extrusion 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
    • B29C49/4242—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
    • 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
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C49/4812—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity and welding opposite wall parts of the parisons or preforms to each other
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/004—Bent tubes

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

【発明の詳細な説明】 ＜産業上の利用分野＞ この発明は曲折部付き物品の中空成形装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a blow molding device for an article with a bent portion.

＜従来技術＞ 従来の曲折部付き物品の中空成形手段としては特開昭52
−73967号公報、特開昭59−199216号公報があり、前者
は夫々成形機に固定される二つの金型と、上記金型の一
方に対し回動し得るように取付けられた他の第３金型と
よりなり、上記成形機に固定された二つの金型が閉じる
時に上記第３の金型が取付軸を中心に回動し、その上面
が上記成形機に固定された二つの金型の下面に密着する
ように構成され、これら三つの金型にて成形品を形成す
るようにしたブロー成形用金型を記載し、後者はブロー
成形法による曲部を有する中空成形品の製造装置に於い
て、複数個に分割されており互いに整合可能な成形型
と、注出されたパリソンの先端部内側に挿入され該先端
部を規制する規制手段と、前記規制手段がパリソン先端
部内側に挿入された後に前記規制手段を所定方向に移動
させる移動手段とを有することを特徴とする曲部を有す
る中空成形品の製造装置を記載している。<Prior Art> Japanese Unexamined Patent Publication No. S52-52:
No. 73967 and Japanese Patent Laid-Open No. 59-199216, the former is two dies fixed to a molding machine and the other dies mounted so as to be rotatable with respect to one of the dies. 3 molds, and when the two molds fixed to the molding machine are closed, the third mold rotates about the mounting shaft, and the upper surfaces of the two molds are fixed to the molding machine. Described is a blow molding die that is constructed so as to be in close contact with the lower surface of the die, and a molded article is formed by these three dies, and the latter is a hollow molded article having a curved portion by the blow molding method. In the apparatus, a molding die which is divided into a plurality of pieces and which can be aligned with each other, a regulation means which is inserted inside the tip portion of the parison that has been poured out and regulates the tip portion, and the regulation means is inside the tip portion of the parison. A moving means for moving the regulating means in a predetermined direction after being inserted into An apparatus for manufacturing a hollow molded article having a curved portion is described.

＜この発明が解消しようとする問題点＞ しかしながらいずれにより成形される成形品も型の開閉
方向（奥行方向）にのみ曲折するにとどまり、それ以上
複雑に曲折する曲折部付き物品を成形することができな
いという問題点がある。<Problems to be solved by the present invention> However, a molded product formed by any method is bent only in the opening / closing direction (depth direction) of the mold, and it is possible to mold an article with a bent portion that is more complicatedly bent. There is a problem that you cannot do it.

＜発明の構成＞ 本発明は小径のパリソンを繰出し降下するダイスと、該
ダイスの下方に降下パリソンの側方方向に開閉する成形
部付きの２つの開閉割型を配設してなる中空成形装置に
おいて、前記開閉割型の下方位置に前記ダイスより降下
したパリソンの下半を割型の開閉方向と交又する方向に
折曲げ誘導するパリソン誘導手段を設け、前記両開閉割
型に上半の成形部に続いて下半にPL面に沿って曲折する
曲折成形部を設けるとともに該一方の割型の前記曲折成
形部下のPL面に前記パリソン誘導手段にて曲折されたパ
リソンを下受けして曲折成形部内に案内する下受板を設
け、他方の割型の対応位置に前記下受板の嵌入する受入
溝を設けるようにして、または開閉割型の下方に降下し
たパリソンの下端を固定する固定手段を設け、前記両開
閉割型の成形部中間にPL面に沿って曲折する曲折成形部
を設けるとともに一方の割型のPL面前に開閉割型の開閉
方向と直交する方向にスライド進退して前記ダイスより
降下したパリソンの中間を押し曲折して前記中間の曲折
成形部内に誘導し嵌入する押板付きのスライドコアを設
け、他方の割型に前記押板の嵌入する受入溝を設けるよ
うにして、あるいはこれらの組合わせ手段にてなる装置
を構成して、かかる問題点を解消しようとするものであ
る。<Structure of the Invention> The present invention is a hollow molding apparatus in which a die for feeding and lowering a small-diameter parison and two open / close split dies with a molding portion for opening / closing in the lateral direction of the descending parison are arranged below the die. At the lower position of the open / close split mold, a parison guide means for guiding the lower half of the parison lowered from the die in a direction intersecting with the open / close direction of the split mold is provided. Following the molding part, a bending molding part that bends along the PL surface is provided in the lower half, and the parison bent by the parison guiding means is received on the PL surface under the bending molding part of the one split mold. A lower backing plate for guiding inside the bending portion is provided, and a receiving groove into which the lower backing plate is fitted is provided at a position corresponding to the other split mold, or the lower end of the parison that has dropped below the opening / closing split mold is fixed. Fixing means is provided to open and close both sides A bending molding part that bends along the PL surface is provided in the middle of the molding part of the mold, and in front of the PL surface of one split mold, the middle of the parison that slides back and forth in the direction orthogonal to the opening and closing direction of the split mold and descends from the die. A slide core with a push plate for guiding and fitting into the intermediate bending part by pushing and bending, and a receiving groove into which the push plate is fitted in the other split mold, or a combination means thereof. In order to solve such a problem, the device is constituted.

＜作用＞ 本発明は開閉割型の開閉方向と交又する方向にパリソン
の下半を折曲げ誘導し、且つ曲折成形部下のPL面に設け
た下受板にて曲折したパリソンを下受けすることによ
り、成形物品を割型の開閉方向（奥行方向）への曲折成
形に加えて交又方向にも曲折し得てより立体的な曲折形
に成形することができることとなり、またパリソンは曲
折した部分が垂れ下がることもなく閉じ合う曲折成形部
内に確実に案内嵌入されるを以って周囲にバリを生じな
いこととなる。<Operation> In the present invention, the lower half of the parison is bent and guided in a direction intersecting with the opening / closing direction of the split mold, and the bent parison is supported by the lower support plate provided on the PL surface below the bending portion. As a result, the molded article can be bent not only in the opening / closing direction (depth direction) of the split mold but also in the intersecting direction to form a three-dimensional bent shape, and the parison is bent. Since the portion is not sagging and is securely guided and fitted into the folding molding portion which is closed, burr is not generated in the surroundings.

またスライド進退するスライドコアによりパリソンの中
間を開閉割型の開閉方向と直交する方向に押し曲折する
ことにより、成形物品の中間部にくの字形などの曲折成
形部を形成することができることとなる。Also, by bending the middle of the parison in the direction orthogonal to the opening / closing direction of the split mold by the slide core that slides back and forth, it is possible to form a bent molding part such as a dogleg in the middle part of the molded article. .

＜実施例＞ 以下図面に基づいて実施例を説明する。<Example> An example will be described below with reference to the drawings.

第１図乃至第６図は第１実施例であって、パリソンＰを
繰出し降下するダイス３と、ダイス３の下方に降下パリ
ソンＰを挟む側方方向に開閉する開閉割型2a,2bを配設
し、開閉割型2a,2bの下方位置に降下したパリソンＰの
下半を折曲げ誘導する手段として開閉割型2a,2bの開閉
方向と交又する方向に進退するシリンダー５とシリンダ
ー５の先端に上向きに取付けられたマンドリル４とを配
置して設ける。開閉割型2a,2bは上半の垂直な成形部1a
に続いて下半に割型のPL面に沿って曲折する曲折成形部
1bを相互対称形にて有し、一方の割型2aの曲折成形部1b
下のPL面に該曲折成形部に沿った下受板6aを設け、他方
の割型2bの対応位置には割型2a,2bが閉じるときに前記
下受板6aが嵌入する受入溝6bを設けている。1 to 6 show the first embodiment, in which a die 3 for feeding and lowering the parison P and an open / close split mold 2a, 2b for opening and closing in a lateral direction sandwiching the descent parison P are arranged below the die 3. The cylinder 5 and the cylinder 5 that move forward and backward in a direction intersecting with the opening / closing direction of the split halves 2a, 2b are provided as means for bending and guiding the lower half of the parison P that has dropped to the lower position of the split halves 2a, 2b. The mandrill 4 mounted upward at the tip is arranged and provided. Open / close split molds 2a and 2b are upper vertical molding parts 1a
Then, in the lower half, the bending molding part is bent along the split PL surface.
1b is symmetrical to each other and one of the split molds 2a has a bent portion 1b.
A lower receiving plate 6a is provided on the lower PL surface along the bent molding portion, and a receiving groove 6b into which the lower receiving plate 6a is fitted when the split molds 2a and 2b are closed is provided at a corresponding position of the other split mold 2b. It is provided.

開閉割型2a,2b間にダイス３より成形部1aおよび曲折成
形部1bより小径のパリソンＰを繰出し降下して、パリソ
ンＰの下端をマンドリル４にて挿し止め、次いでシリン
ダー５を前進作動してパリソンＰの下半を曲折した成形
部1b側に折曲げて後、開閉割型2a,2bを閉じ作動するの
である。閉じ作動の終盤において一方の割型2aのPL面に
設けた下受板6aにてパリソンＰの折り曲げ部分を下支え
して閉じ合う曲折成形部1b間に案内して嵌入し、閉じた
開閉割型間のパリソンＰ内にエアーを注入して下半に折
曲部イを有すパイプ状の成形物品ロを中空成形するので
ある。The parison P having a smaller diameter than the molding part 1a and the bending molding part 1b is fed out from the open / close split dies 2a, 2b and lowered, and the lower end of the parison P is inserted and stopped by the mandrill 4, and then the cylinder 5 is moved forward. After the lower half of the parison P is bent to the side of the bent molding portion 1b, the opening / closing split molds 2a, 2b are closed and operated. In the final stage of the closing operation, the lower support plate 6a provided on the PL surface of one split mold 2a supports the folded portion of the parison P to guide and fit it between the bending molding portions 1b that are closed, and the open / close split mold is closed. By injecting air into the parison P between them, the pipe-shaped molded article (b) having the bent portion (a) in the lower half is hollow-molded.

第７図、第８図は第２実施例であって、開閉割型2a,2b
の中間に凸形成形部1cと凹形成形部1dを設けて、下半の
折曲部イのほか中間折曲部ハを有すより立体的な物品ニ
の中空成形装置を示している。下受板6aを凸型成形部1c
部分にまで延長したことにより複雑な形状の成形部内に
パリソンＰを確実に案内して嵌入することができること
となる。FIG. 7 and FIG. 8 show the second embodiment, and the open / close split molds 2a, 2b.
A hollow molding apparatus for a more three-dimensional article D having a convex half-shaped portion 1c and a concave half-shaped portion 1d provided in the middle of the above and having an intermediate bent portion c in addition to the lower half bent portion a is shown. Lower base plate 6a to convex molding part 1c
By extending to the portion, the parison P can be reliably guided and fitted into the molding portion having a complicated shape.

第９図乃至第11図は第３実施例で、パリソンＰの折曲げ
誘導手段として一方の割型2aのPL面の下端一側に旋回上
動自在において支板7b付きの可動コア７を設けたもので
あり、繰出し降下するパリソンＰの下端が開閉割型下に
達した点で可動コア７を旋回上動してパリソンＰの下半
部を曲折成形部1b方向に折曲げて閉じ合う成形部1b内に
案内し嵌入させて中空成形するのである。なお他方の割
型2bの対応位置には支板7bの嵌入する受入溝を設けてい
る。9 to 11 show a third embodiment, in which a movable core 7 with a supporting plate 7b is provided as a bending guide means for the parison P on one side of the lower end of the PL surface of one split mold 2a so as to be pivotally movable. When the lower end of the parison P, which descends and extends, reaches the bottom of the open / close split mold, the movable core 7 is swung upward to bend the lower half of the parison P toward the bending forming portion 1b to close the molding. Hollow molding is carried out by guiding and fitting into the portion 1b. A receiving groove into which the support plate 7b is fitted is provided at the corresponding position of the other split mold 2b.

第12図乃至第15図は第４実施例で、くの字形に曲折した
中空成形物品ホの製造装置を示すもので、開閉割型2a,2
bはPL面の中間にくの字形の成形部1e,1fを設けるととも
に、割型2aのPL面の中間に割型2a,2bの開閉方向に対し
て直交する方向に進退する前面をくの字にした押板8b付
きのスライドコア８を設け、繰出し降下したパリソンＰ
の下端を固定する固定手段としてマンドリル４を設けて
いる。繰出し降下したパリソンＰをマンドリル４にて挿
し受け固定した後、スライドコア８の前進によりパリソ
ンＰの中間をくの字に折曲げ、成形部1e,1f間に誘導し
嵌入させて中空成形するのである。なお8cは他方の割型
2bに設けた押板8bの嵌入する受入溝である。FIGS. 12 to 15 show a fourth embodiment, which is an apparatus for manufacturing a hollow-molded article E bent in a dogleg shape.
b is provided with a V-shaped forming part 1e, 1f in the middle of the PL surface, and the front surface that moves forward and backward in the direction orthogonal to the opening / closing direction of the split molds 2a, 2b is provided in the middle of the PL surface of the split mold 2a. The slide core 8 with the letter-shaped push plate 8b is provided, and the parison P is extended and lowered.
A mandrill 4 is provided as a fixing means for fixing the lower end of the. After the parison P that has been extended and lowered is inserted and fixed by the mandrill 4, the middle of the parison P is bent into a dogleg by the forward movement of the slide core 8, and the parison P is guided between the molding portions 1e and 1f to be fitted and hollow molded. is there. 8c is the other split type
It is a receiving groove into which the push plate 8b provided in 2b is fitted.

第16図は第５実施例で第３実施例で示した旋回上動する
可動コア７と前記したスライドコア８の組合わせにより
中間を波形、下部にＬ形折曲部を有した中空成形物品の
製造装置を示している。FIG. 16 is a hollow molded article having a corrugated middle portion and an L-shaped bent portion at the lower portion by the combination of the movable core 7 which is swung up and moved as shown in the third embodiment and the slide core 8 in the fifth embodiment. 2 shows a manufacturing apparatus of the above.

第17図乃至第20図は前述した折曲部付き物品の中間に取
付板トを一体成形する製造手段を示すもので、割型2aは
PL面の一部に成形部１に続いて溜部1gを設けて、型締め
後の予備ブローによりパリソンＰの一部に溜部1gに膨出
する部分を設けておいて、閉じ合う開閉割型の成形部１
内にエアーを注入して物品チを中空成形すると共に、割
型2bに取付けた入子10の前進にて予備ブローにより膨出
した部分を押して物品チの成形と同時に取付板トを成形
し得るようにしたのである。なお、９は止め部材であ
る。17 to 20 show a manufacturing means for integrally forming a mounting plate in the middle of the above-mentioned article with a bent portion, and the split mold 2a is
An opening 1g is provided on a part of the PL surface following the molding part 1, and a part that bulges into the opening 1g is provided on a part of the parison P by pre-blow after mold clamping. Molding part 1
It is possible to form an attachment plate at the same time as forming the article by pressing air into the article to hollow-form the article and pressing a portion bulged by preliminary blow by the advance of the insert 10 attached to the split mold 2b. I did so. In addition, 9 is a stop member.

第21図乃至第22図は同、取付板トの一面に補強用のイン
サート板部材リを密着させた製造手段を示しており、前
記した割型2aに設ける溜部1gに別個に作成したヘッド部
分ヌを有すインサート板部材リを背面軸ルにより当て入
れしておいて予備ブローによりインサート板部材リのヘ
ッド部分ヌを包むようにしてパリソンＰを膨出させ、入
子10の押しにて密着成形するようにしたのである。FIGS. 21 to 22 show the manufacturing means in which the reinforcing insert plate member re is closely attached to one surface of the mounting plate, and the head separately prepared in the reservoir 1g provided in the split mold 2a. The parison P is swollen so as to wrap the head part of the insert plate member by pre-blowing by inserting the insert plate member having the part part by the back axle, and the contact molding by pressing the insert 10. I decided to do it.

第23図は取付板トにインサート板部材リを取付けると同
時に取付穴ヲを成形する手段を有し、第24図乃至第25図
は物品の延長方向にリブ11を成形する手段を示すもので
ある。FIG. 23 shows a means for forming the mounting holes at the same time as mounting the insert plate member on the mounting plate, and FIGS. 24 to 25 show means for forming the ribs 11 in the extension direction of the article. is there.

＜発明の効果＞ 以上のようにして本発明の装置によれば、従来の割型開
閉方向（奥行方向）への曲折に加えて開閉方向と交又す
る方向にも曲折した、より複雑で立体的な折曲部付き物
品を成形することができるという効果を生ずる。しかも
下受板等を設けてパリソンの曲折部分を確実に曲折成形
部内に案内し嵌入するようにしたので、複雑な曲折形状
であっても周囲にバリの発生することを防止し得て高品
質の成形品を製造することができるという効果を生ず
る。<Effect of the Invention> As described above, according to the device of the present invention, in addition to the conventional bending in the split mold opening / closing direction (depth direction), it is also bent in a direction intersecting with the opening / closing direction. The effect that an article with a typical bent portion can be formed is produced. In addition, since the bottom support plate etc. is provided so that the bent part of the parison can be guided and fitted securely into the bending molding part, it is possible to prevent the occurrence of burrs in the surroundings even with a complicated bending shape and it is of high quality. The effect of being able to manufacture molded articles of

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

第１図は本発明の第１実施例をパリソンの繰出し降下し
た状態にて示す正面図、第２図は同、パリソンの下半部
を曲折成形部方向に折曲げた状態を示す側面図、第３図
は同、下受板にてパリソンを下支えした状態を示す正面
図、第４図は同、部分横断面図、第５図は同、閉じた割
型の成形部間にパリソンが嵌入した状態を示す部分横断
面図、第６図は同、エアーを注入して中空成形した状態
を示す部分横断面図、第７図は第２実施例をパリソンの
繰出し降下した状態にて示す正面図、第８図は同、パリ
ソンの下半部を曲折成形部方向に折曲げて且つ下受板に
より下支えした状態を示す正面図、第９図は第３実施例
で、パリソンを繰出し降下した状態にて示す側面図、第
10図は同、可動コアの旋回上動によりパリソンの下半部
を曲折成形部方向に折曲げた状態を示す側面図、第11図
は同、部分縦断面図、第12図は第４実施例で、パリソン
を繰出し降下した状態を示す側面図、第13図は同、部分
横断面図、第14図は同、スライドコアを前進させてパリ
ソンの中間部を曲折した状態を示す側面図、第15図は
同、部分横断平面図、第16図は第５実施例で、降下する
パリソンを波形とＬ形に折曲げた状態にて示す側面図、
第17図は取付板を中間に一体成形した物品を示す部分斜
視図、第18図は取付板の成形前の状態を示す部分横断平
面図、第19図は同、予備ブローによりパリソンの一部を
溜部内に膨出させた状態を示す部分横断面図、第20図は
同、入子を前進押しして取付板を成形した状態を示す部
分横断面図、第21図は取付板に補強用のインサート板部
材を抱き込み取付けする実施例を示す部分横断面図、第
22図は同、インサート板部材付き成形物品の横断面図、
第23図は同、取付穴の同時成形例を示す横断面図、第24
図は成形物品の外周の長手方向に補強用のリブを成形す
るため、開閉割型を半閉じして予備ブローをした状態を
示す部分横断面図、第25図は同、開閉割型を閉じてリブ
を成形した状態を示す部分横断面図、1aは上半の成形
部、1bは下半の曲折成形部、1c,1dは凹凸形成形部、1e,
1fはくの字形成形部、2a,2bは開閉割型、３はダイス、3
aはブローピン、４はマンドリル、５はシリンダー、6a
は下受板、6bは下受板の受入溝、７は可動コア、7aは可
動コアを作動するシリンダー、7bは支板、８はスライド
コア、8aはスライドコアを進退させるシリンダー、8bは
押板、8cは押板の受入溝、9aは止め部材、9bは止め部材
の受入溝、10は入子、10aは入子を進退させるシリンダ
ー、11はリブである。FIG. 1 is a front view showing a first embodiment of the present invention in a state in which a parison is extended and lowered, and FIG. 2 is a side view showing a state in which the lower half of the parison is bent in the bending molding portion direction, Fig. 3 is a front view showing a state in which the parison is supported by a lower backing plate, Fig. 4 is a partial cross-sectional view of the same, and Fig. 5 is the same, in which the parison is fitted between the molding parts of the closed split mold. FIG. 6 is a partial cross-sectional view showing a state in which air is injected to perform hollow molding, and FIG. 7 is a front view showing a second embodiment of the parison in a lowered state. FIGS. 8 and 9 are front views showing a state in which the lower half of the parison is bent in the direction of the bending portion and supported by a lower backing plate, and FIG. 9 shows the third embodiment in which the parison is extended and lowered. Side view, shown in the state
FIG. 10 is a side view showing a state in which the lower half of the parison is bent toward the bending molding part by the swiveling upward movement of the movable core, FIG. 11 is a partial longitudinal sectional view of the same, and FIG. 12 is a fourth embodiment. As an example, a side view showing a state in which the parison is extended and lowered, FIG. 13 is the same, a partial cross-sectional view, and FIG. 14 is a side view showing a state in which the slide core is advanced to bend the middle part of the parison. FIG. 15 is a partial cross-sectional plan view of the same, and FIG. 16 is a side view showing the descending parison in a corrugated shape and bent into an L shape in a fifth embodiment.
FIG. 17 is a partial perspective view showing an article in which a mounting plate is integrally molded in the middle, FIG. 18 is a partial cross-sectional plan view showing a state before the mounting plate is molded, and FIG. 19 is a part of a parison by a preliminary blow. Fig. 20 is a partial cross-sectional view showing the state in which the bulge is expanded into the reservoir, Fig. 20 is the same as the partial cross-sectional view showing the state in which the mounting plate is formed by pushing the insert forward, and Fig. 21 shows the mounting plate reinforced. Partial cross-sectional view showing an embodiment of hugging and mounting an insert plate member for
22 is a cross-sectional view of the molded article with insert plate member,
FIG. 23 is a transverse sectional view showing an example of simultaneous molding of mounting holes, FIG.
The figure shows a partial cross-sectional view showing a state in which the opening / closing split mold is semi-closed and pre-blown in order to form a reinforcing rib in the longitudinal direction of the outer periphery of the molded article. Partial cross-sectional view showing a state in which ribs are formed by, 1a is an upper half forming portion, 1b is a lower half bending forming portion, 1c and 1d are concavo-convex forming portions, 1e,
1f foil forming part, 2a, 2b split type, 3 dice, 3
a is a blow pin, 4 is a mandrill, 5 is a cylinder, 6a
Is a lower support plate, 6b is a receiving groove of the lower support plate, 7 is a movable core, 7a is a cylinder for operating the movable core, 7b is a support plate, 8 is a slide core, 8a is a cylinder for moving the slide core forward and backward, and 8b is a pusher. A plate, 8c is a receiving groove of the push plate, 9a is a retaining member, 9b is a receiving groove of the retaining member, 10 is a nest, 10a is a cylinder for moving the nest forward and backward, and 11 is a rib.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】小径のパリソンを繰出し降下するダイス
と、該ダイスの下方に降下パリソンの側方方向に開閉す
る成形部付きの２つの開閉割型を配設してなる中空成形
装置において、前記開閉割型の下方位置に前記ダイスよ
り降下したパリソンの下半を割型の開閉方向と交叉する
方向に折曲げ誘導するパリソン誘導手段を設け、前記両
開閉割型に上半の成形部に続いて下半にPL面に沿って曲
折する曲折成形部を設けるとともに該一方の割型の前記
曲折成形部下のPL面に前記パリソン誘導手段にて曲折さ
れたパリソンを下受けして曲折成形部内に案内する下受
板を設け、他方の割型の対応位置に前記下受板の嵌入す
る受入溝を設けたことを特徴とする曲折部付き物品の中
空成形装置。1. A hollow molding apparatus comprising a die for feeding and lowering a small-diameter parison, and two opening / closing split dies having a molding portion for opening / closing in a lateral direction of the lower parison below the die. A parison guiding means for guiding the lower half of the parison lowered from the die in a direction intersecting with the opening and closing direction of the split mold is provided at the lower position of the split mold, and the open and closed split molds are connected to the upper half molding part. In the lower half, a bending molding part that bends along the PL surface is provided, and the parison bent by the parison guiding means is received under the PL surface under the bending molding portion of the one split mold and is received in the bending molding portion. A hollow forming apparatus for an article with a bent portion, wherein a lower receiving plate for guiding is provided, and a receiving groove into which the lower receiving plate is fitted is provided at a position corresponding to the other split mold. 【請求項２】パリソン誘導手段を一方の割型のPL面に旋
回上動自在において設ける押板付の可動コアとした請求
項（１）記載の曲折部付き物品の中空成形装置。2. The hollow molding apparatus for articles with bending parts according to claim 1, wherein the parison guiding means is a movable core with a push plate provided on one split mold PL surface so as to be pivotally movable. 【請求項３】小径のパリソンを繰出し降下するダイス
と、該ダイスの下方に降下パリソンの側方方向に開閉す
る成形部付きの２つの開閉割型を配設してなる中空成形
装置において、前記開閉割型の下方に降下したパリソン
の下端を固定する固定手段を設け、前記両開閉割型の成
形部中間にPL面に沿って曲折する曲折成形部を設けると
ともに一方の割型のPL面前に開閉割型の開閉方向と直交
する方向にスライド進退して前記ダイスより降下したパ
リソンの中間を押し曲折して前記中間の曲折成形部内に
誘導し嵌入する押板付きのスライドコアを設け、他方の
割型に前記押板の嵌入する受入溝を設けたことを特徴と
する曲折部付き物品の中空成形装置。3. A hollow molding apparatus comprising a die for feeding and lowering a parison having a small diameter, and two opening / closing split dies having a molding portion for opening / closing in a lateral direction of the lower parison below the die. A fixing means for fixing the lower end of the parison that descends below the opening / closing split mold is provided, and a bending molding part that bends along the PL surface is provided in the middle of the molding parts of both the opening / closing split molds and in front of the PL surface of one split mold. A slide core with a push plate is provided which slides back and forth in a direction orthogonal to the opening / closing direction of the open / close split die and pushes and bends the middle of the parison that has descended from the die to guide and fit into the intermediate bending forming part, and the other A hollow molding device for an article with a bent portion, wherein a split groove is provided with a receiving groove into which the push plate is fitted.
JP1180425A 1989-07-14 1989-07-14 Hollow molding device for articles with bent parts Expired - Lifetime JPH0675917B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1180425A JPH0675917B2 (en) 1989-07-14 1989-07-14 Hollow molding device for articles with bent parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1180425A JPH0675917B2 (en) 1989-07-14 1989-07-14 Hollow molding device for articles with bent parts

Publications (2)

Publication Number Publication Date
JPH0345330A JPH0345330A (en) 1991-02-26
JPH0675917B2 true JPH0675917B2 (en) 1994-09-28

Family

ID=16083034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1180425A Expired - Lifetime JPH0675917B2 (en) 1989-07-14 1989-07-14 Hollow molding device for articles with bent parts

Country Status (1)

Country Link
JP (1) JPH0675917B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015024117A1 (en) * 2013-08-21 2015-02-26 Salflex Polymers Limited Flashless blow molding with one sized end-cuff

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW440821B (en) 1999-01-25 2001-06-16 Asustek Comp Inc Installation-angle fine-tune device of spindle motor in optical pickup device
JP2007021989A (en) * 2005-07-20 2007-02-01 Opuco:Kk Apparatus and method for blow molding
JP7032949B2 (en) * 2018-02-14 2022-03-09 三桜工業株式会社 Bending mold

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983199A (en) * 1974-10-15 1976-09-28 Owens-Illinois, Inc. Method for making plastic articles having blown and non-blown portions
JPS5273967A (en) * 1975-12-17 1977-06-21 Kouji Maeda Mold
JPS558155U (en) * 1978-06-30 1980-01-19
JPS59199216A (en) * 1983-04-28 1984-11-12 Ekuseru Kk Method and apparatus for preparing hollow molded article having bent part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015024117A1 (en) * 2013-08-21 2015-02-26 Salflex Polymers Limited Flashless blow molding with one sized end-cuff

Also Published As

Publication number Publication date
JPH0345330A (en) 1991-02-26

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