JPH03266624A - Extrusion head - Google Patents
Extrusion headInfo
- Publication number
- JPH03266624A JPH03266624A JP2065751A JP6575190A JPH03266624A JP H03266624 A JPH03266624 A JP H03266624A JP 2065751 A JP2065751 A JP 2065751A JP 6575190 A JP6575190 A JP 6575190A JP H03266624 A JPH03266624 A JP H03266624A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- mandrel
- flow path
- paths
- injection
- 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
Links
- 238000001125 extrusion Methods 0.000 title claims description 18
- 239000011347 resin Substances 0.000 claims abstract description 91
- 229920005989 resin Polymers 0.000 claims abstract description 91
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 238000000071 blow moulding Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、食品、化粧品、医薬品、あるいは工業用の各
種の液体や粉体等を充填するボトル、タンク、袋体、あ
るいはカップ等てあフて、胴体の一部に上下方向の透明
窓を形成する等、胴体の一部が異色材料または異質材料
からなる中空体をブロー成形する装置の一部を構成する
押出ヘッドに間するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applicable to bottles, tanks, bags, cups, etc. for filling various liquids, powders, etc. for food, cosmetics, pharmaceuticals, or industrial use. In this case, a part of the body is inserted into an extrusion head that forms part of a blow molding device for blow molding a hollow body made of a different color or different material, such as forming a transparent window in the vertical direction in a part of the body. be.
［従来の技術］
胴体の一部を興った樹脂で構成した容器、およびそれを
ブロー成形によって製造する手段は、特開昭５４−１５
３０８７号公報に記載されている。[Prior Art] A container in which a part of the body is made of a molded resin and a means for manufacturing the same by blow molding are disclosed in Japanese Patent Application Laid-Open No. 54-15.
It is described in Publication No. 3087.
［発明が解決しようとする！！題コ
コ胴体一部を興った樹脂で構成した容器をブロー成形す
る従来の技術に−よれば、押出ヘットに副相脂流路を設
けて、押出される主樹脂のバリフン中に副相たの帯部を
介在させてブロー成形するものであるが、副相脂の位置
は押出ヘットの副相脂流路の位置で一定しており、その
位置を変更するには押出ヘッドを交換するか、またはそ
の取付位置を変更しなければならないので、例えは、ボ
トルやタンクであって胴体の透明窓を種々異な）た部位
に設けた多種品種のものを製造することが困難であフた
ｅ
本発明は、このような従来のものの問題点を解消しよう
とするものであって、単にマンドレルの回転角を変更す
るのみで、複数の樹脂流路の合流位置を任意に変更する
ことができ、種々異なった態様の中空体を容易にブロー
成形することができる押出ヘッドを提供することを目的
とするものである。[Invention tries to solve! ! According to the conventional technique of blow molding a container whose body is partially made of resin, a subphase resin flow path is provided in the extrusion head to allow the subphase resin to flow into the extruded main resin. Blow molding is performed with a belt interposed, but the position of the subphase resin is fixed at the position of the subphase fat flow path of the extrusion head, and to change the position, it is necessary to replace the extrusion head. For example, it is difficult to manufacture a wide variety of bottles and tanks with transparent windows located in different parts of the body. The present invention aims to solve the problems of the conventional method, and simply by changing the rotation angle of the mandrel, the confluence position of a plurality of resin flow channels can be arbitrarily changed. It is an object of the present invention to provide an extrusion head that can easily blow mold hollow bodies of various different embodiments.
［課題を解決するための手段］
本発明は、上記の目的を達成するための技術的手段とし
て、次のように構成した。[Means for Solving the Problems] The present invention is configured as follows as a technical means for achieving the above object.
すなわち、その構成は、マンドレルとその周面を密接状
に覆うダイとで構成され、マントトルの周面には、ダイ
に穿孔形成した樹脂注入孔に対応する位置から下方向に
延びる凹溝からなる複数の樹脂流路を形成するとともに
、樹脂の流下方向に複数の樹脂流路の合流部を形成し、
複数の樹脂流路の上端には、それぞれマンドレルの周面
方向に延びる凹溝からなる樹脂注入路を＃Ａ詣流路と連
通ずるように形成し、マントトルを回転角変更自在に構
成してなることを特徴とする押出ヘットである。That is, the structure consists of a mandrel and a die that closely covers the circumferential surface of the mandrel, and the circumferential surface of the mandrel consists of a groove extending downward from a position corresponding to a resin injection hole formed in the die. Forming a plurality of resin flow channels and forming a confluence section of the plurality of resin flow channels in the resin flow direction,
At the upper end of the plurality of resin channels, resin injection channels each consisting of a groove extending in the circumferential direction of the mandrel are formed so as to communicate with the #A pilgrim channel, and the mantle is configured to be able to freely change the rotation angle. This is an extrusion head characterized by the following.
［作 用 ］
本発明に係る押出ヘットによれば、マントトルに形成さ
れた複数の樹脂流路の上端には、それぞれマンドレルの
周面方向に延びる樹脂注入路が形成されているので、マ
ンドレルの回転角を変更しても、複数の樹脂注入路はそ
れぞれの樹脂注入孔に通じた状態が保持される。そして
、マンドレルは回転角が変更自在であるから、マンドレ
ルの回転角を変更するのみて、複数の樹脂の合流位置を
任意に変更して、種々異なった態様の中空体を得ること
ができる。[Function] According to the extrusion head according to the present invention, resin injection channels extending in the circumferential direction of the mandrel are formed at the upper ends of the plurality of resin channels formed in the mandrel, so that rotation of the mandrel Even if the corners are changed, the plurality of resin injection paths remain connected to their respective resin injection holes. Since the rotation angle of the mandrel can be changed, hollow bodies of various types can be obtained by changing the joining position of the plurality of resins as desired by simply changing the rotation angle of the mandrel.
［実 施 例 ］ 本発明の一実施例を図面を参照して説明する。[Example ] An embodiment of the present invention will be described with reference to the drawings.
第１図ないし、第６図において、）はブロー成形用の押
出ヘットであって、この押出ヘット１は、円柱状のマン
ドレル２とダイ３とで構成され、ダイ３！！マンドレル
２の周面を密接状に覆っている。1 to 6, ) is an extrusion head for blow molding, and this extrusion head 1 is composed of a cylindrical mandrel 2 and a die 3. ! The circumferential surface of the mandrel 2 is closely covered.
マンドレル２はその軸心を中心に回転角変更自在である
。マンドレル２の下部には押出される樹脂のバリスンの
肉厚を制御するコア４を有する。上記マンドレル２０周
面には上下方向に延びる凹溝からなる主樹脂流Ｍ５およ
び副相指温ｗａ６が形成されており、主樹脂流１ａ５は
途中で２方向に等分に分かれて１８０度の位置に至り、
さらに下方に向けて傾斜状に延びて拡間するコートバン
カ一部７が形成されている。副相脂流路６は、マンドレ
ル２の軸方向に垂直に形成されており、その下端はコー
トハンガ一部７に開口して樹脂合流部８をなしている。The rotation angle of the mandrel 2 can be freely changed around its axis. The lower part of the mandrel 2 has a core 4 for controlling the wall thickness of the extruded resin ballisne. A main resin flow M5 and a subphase finger temperature wa6 are formed on the circumferential surface of the mandrel 20, and the main resin flow M5 and the subphase finger temperature wa6 are formed by concave grooves extending in the vertical direction, and the main resin flow 1a5 is divided into two equal parts in the middle, at a position of 180 degrees. As a result,
Further, a coat bunker portion 7 is formed which extends downward in an inclined manner and widens. The secondary phase resin channel 6 is formed perpendicularly to the axial direction of the mandrel 2, and its lower end opens into the coat hanger part 7 to form a resin confluence section 8.
副相脂流路６は、ボトルやタンクの胴体の一部に上下方
向の透明窓を形成するためのものである。マンドレル２
には、主樹脂流路５および副相指温Ｗａ６の上端からそ
れぞれ周面方向に延びる凹溝からなる樹脂注入路９，１
０か形成されており、これら樹脂注入路９．】０は、そ
れぞれ主樹脂流路５および副相脂流路６の上端から両方
向に９０度ずつ１８０度の範囲にわたって一体に連通ず
るように形成されている。１１はダイ３の主樹脂注入孔
、１２は同しく副相た注入孔であって、主樹脂注入孔１
１は主樹脂流路５の樹脂注入路９に、また副相脂注入孔
１２は副相脂流路６の樹脂注入路１０にそれぞれ通して
いる。１３はステッピングモータであって、このステッ
ピングモータ】３によフてマンドレル２が回転され、マ
ンドレル２の回転角が変更自在となっている。１４はダ
イ３の頂板、１５は固定ボルトである。The secondary fat channel 6 is for forming a transparent window in the vertical direction in a part of the body of a bottle or tank. mandrel 2
, resin injection channels 9 and 1 are formed of concave grooves extending in the circumferential direction from the upper ends of the main resin flow channel 5 and the subphase index temperature Wa6, respectively.
0 is formed, and these resin injection paths 9. 0 are formed so as to communicate integrally over a range of 180 degrees by 90 degrees in both directions from the upper ends of the main resin flow path 5 and the subresin flow path 6, respectively. 11 is a main resin injection hole of the die 3, and 12 is a secondary injection hole, which is similar to the main resin injection hole 1.
1 is passed through the resin injection path 9 of the main resin flow path 5, and the sub-resin injection hole 12 is passed through the resin injection path 10 of the sub-resin flow path 6, respectively. 13 is a stepping motor, and the mandrel 2 is rotated by the stepping motor 3, so that the rotation angle of the mandrel 2 can be changed. 14 is the top plate of the die 3, and 15 is a fixing bolt.
以上のように構成された押出ヘッド１は複数の樹脂の押
出機（図示せず）に装着して用いる。そして、主樹脂注
入孔１１から可塑化した主樹脂が、副相脂注入孔１２か
ら可塑化した副相脂がそれぞれ加圧状態のもとに注入さ
れると、主樹脂は主樹脂流路５から両方向に流下してコ
ートバンカ一部７で全周にわたって拡間するが、コート
バンカ一部７の副相脂流路６との樹脂合流部８ては、副
相脂流路６を流下する副相脂か主樹脂に対して帯状に介
入し・で、主樹脂と副相たとが接合した円筒状のパリス
ンとして押出される。このバリスンの第６図Ｅ部におけ
る主根１１ｉａと副相脂すとの接合部分は、第７図に示
すように、主樹脂ａ中に副相脂すが楔状に噛合った状態
となる。したがフて、主樹脂ａを着色し、副相脂すを透
明とした樹脂により、上記のような態様のバリスンをブ
ロー成形してボトルやタンクを成形すれば、胴体の一部
に帯状の透明窓を有するものが得られる。The extrusion head 1 configured as described above is used by being attached to a plurality of resin extruders (not shown). Then, when the plasticized main resin is injected from the main resin injection hole 11 and the plasticized subphase resin is injected from the subphase resin injection hole 12 under pressure, the main resin is injected into the main resin flow path 5. The resin flows down in both directions from the coat bunker part 7 and spreads over the entire circumference, but at the resin confluence part 8 with the subphase fat flow path 6 of the coat bunker part 7, the subphase flowing down the subphase fat flow path 6 The fat intervenes in a belt-like manner with respect to the main resin, and is extruded as a cylindrical parisson in which the main resin and subphase are bonded. At the joint portion between the main root 11ia and the sub-phase resin at the part E in FIG. 6 of this Balison, the sub-phase resin is wedge-shaped in the main resin a, as shown in FIG. Therefore, if a bottle or tank is formed by blow-molding the above-mentioned Balison using a resin in which the main resin a is colored and the sub-phase resin is transparent, a band-shaped part will be formed on a part of the body. One with a transparent window is obtained.
前記のように成形されるボトルやタンク等において、ｉ
１樹脂による例えば透明窓の位置を変更するには、ステ
ッピングモータ１３を駆動してマンドレル２の回転角を
調整するが、マンドレル２には、主樹脂流路５および副
相脂流路６の上端からその両側に延びる周面方向の樹脂
注入路９，１０がそれぞれ形成されているので、マンド
レル２の回転角を変更し・でも、主樹脂注入孔１１およ
Ｕ副相脂注入孔１２は常にそれぞれの樹脂注入路９，１
０に通じている。In bottles, tanks, etc. that are molded as described above, i
To change the position of, for example, a transparent window made of resin, the stepping motor 13 is driven to adjust the rotation angle of the mandrel 2. Since resin injection channels 9 and 10 are formed in the circumferential direction extending from and to both sides of the mandrel, even if the rotation angle of the mandrel 2 is changed, the main resin injection hole 11 and the U secondary resin injection hole 12 are always maintained. Each resin injection path 9,1
It leads to 0.
このため、単にマンドレル２０回転角を調整するのみて
、副相脂による透明窓等の位置が異なるフロー成形品を
容易に製造することができる。第８図および第９図には
マンドレル２を９０度回転させた場合の態様が示されて
いる。Therefore, by simply adjusting the rotation angle of the mandrel 20, it is possible to easily produce flow-molded products having different positions of transparent windows and the like due to the subphase resin. 8 and 9 show the mandrel 2 rotated by 90 degrees.
なお、樹脂注入路９，１０はダイ３に凹溝を設けて形成
することもできるが、押出へ・ンド１の加工上、また分
捕上からマンドレル側に形成するのが好ましい。Although the resin injection paths 9 and 10 can be formed by providing grooves in the die 3, it is preferable to form them on the mandrel side from the top of the extrusion end 1 and from the top of the scavenging process.
また、前記実施例では、ボトルやタンク等の胴体の一部
に上下方向に帯状をなす透明窓を形成したものについて
例示したが、例えば、マンドレルの下部において、複数
の樹脂流路から流下する複数の樹脂による全周分の配分
を適宜設定することによって、種々態様の異なるブロー
成形品を製造することが可能である。さらに、バリスン
の押出過程で、マンドレルの回転角を時間的に変更する
動作をさせれば、縞模様や波形模様等、複雑な形態のブ
ロー成形品を容易に製造することもてきる。Furthermore, in the above embodiments, a transparent window formed in a vertical band shape is formed on a part of the body of a bottle or a tank. For example, in the lower part of a mandrel, multiple By appropriately setting the distribution of the resin over the entire circumference, it is possible to manufacture blow-molded products of various types. Furthermore, if the rotation angle of the mandrel is changed over time during the extrusion process of the balisne, it is possible to easily produce blow-molded products with complex shapes such as striped patterns and wavy patterns.
マンドレルの回転角変更手段としては、前記実施例のよ
うにステッピングモータによるものの外、マンドレルを
回転させるラック・ビニオンタイプやマンドレルの上部
に螺条を形成した螺条タイプなと、適宜な手段が利用で
きる。As a means for changing the rotation angle of the mandrel, in addition to using a stepping motor as in the above embodiment, suitable means such as a rack/binion type for rotating the mandrel or a screw type with a thread formed on the upper part of the mandrel can be used. Available.
［発明の効果］
本発明に係る押出ヘットは、マンドレルとその周面を密
接状に覆うダイとで構成され、マンドレルの周面には、
ダイに穿孔形成した樹脂注入孔に対応する位置から下方
向に延びる凹溝からなる複数の樹脂流路を形成するとと
もに、樹脂の流下方向に複数の樹脂流路の合流部を形成
し、複数の樹脂流路の上端には、それぞれマンドレルの
周面方向に延びる凹溝からなる樹脂注入路を樹脂流路と
連通するように形成し、マンドレルを回転角変更自在に
構成してなるものであるから、単にマンドレルの回転角
を変更するのみで、複数の樹脂流路の合流位置を任意に
変更することができ、種々異なりだ態様の中空体を容易
にブロー成形することができる効果が得られる。[Effects of the Invention] The extrusion head according to the present invention is composed of a mandrel and a die that closely covers the circumferential surface of the mandrel.
A plurality of resin channels are formed by concave grooves extending downward from positions corresponding to the resin injection holes formed in the die, and a confluence of the plurality of resin channels is formed in the resin flow direction. At the upper end of the resin flow path, a resin injection path consisting of a concave groove extending in the circumferential direction of the mandrel is formed so as to communicate with the resin flow path, and the mandrel is constructed so that the rotation angle can be changed freely. By simply changing the rotation angle of the mandrel, the merging position of a plurality of resin channels can be arbitrarily changed, and hollow bodies of various shapes can be easily blow-molded.
図面は本発明に係る押出ヘットの一実施例を示し、第１
図は全体の縦断正面図、第２図はマンドレル部分の斜視
図、第３図、第４図、第５１！Ｉおよび第６図はそれぞ
れ第１図におけるＡ−Ａ線、Ｂ−Ｂ線、Ｃ−Ｃ線および
Ｄ−Ｄ線断面図、第７図は第６図のＥ部における樹脂の
態様を示す拡大断面図、第８図はマンドレルの回転角を
９０度変更した態様を示す第１図Ａ−Ａ線断面図、第９
図は同上Ｄ−Ｄ線断面図である。なお、第３図ないし第
６図、第８図および第９図においては、切断面を表わす
平行斜線を省略しである。
１・・・押出ヘット、２・・・マンドレル、３・・・ダ
イ、４・・・コア、５・・・主樹脂流路、６・・・副相
脂流路、７・・・コートハンガ一部、８・・・樹た合流
部、９，１０・・・樹脂注入路、１１・・・主樹脂注入
孔、１２・・・副相脂注入孔、１３・・・ステッピング
モータThe drawing shows one embodiment of the extrusion head according to the present invention, and shows the first embodiment of the extrusion head according to the present invention.
The figure is a longitudinal sectional front view of the whole, Figure 2 is a perspective view of the mandrel part, Figures 3, 4, and 51! I and FIG. 6 are cross-sectional views taken along lines A-A, B-B, C-C, and D-D in FIG. 1, respectively, and FIG. 7 is an enlarged view showing the state of the resin at section E in FIG. 6. 8 is a cross-sectional view taken along the line A-A in FIG.
The figure is a sectional view taken along line D-D as above. In addition, in FIGS. 3 to 6, FIG. 8, and FIG. 9, parallel oblique lines representing cut surfaces are omitted. 1... Extrusion head, 2... Mandrel, 3... Die, 4... Core, 5... Main resin channel, 6... Secondary resin channel, 7... Coat hanger Part, 8... Tree confluence, 9, 10... Resin injection path, 11... Main resin injection hole, 12... Secondary resin injection hole, 13... Stepping motor
Claims (1)
、マンドレルの周面には、ダイに穿孔形成した樹脂注入
孔に対応する位置から下方向に延びる凹溝からなる複数
の樹脂流路を形成するとともに、樹脂の流下方向に複数
の樹脂流路の合流部を形成し、複数の樹脂流路の上端に
は、それぞれマンドレルの周面方向に延びる凹溝からな
る樹脂注入路を樹脂流路と連通するように形成し、マン
ドレルを回転角変更自在に構成してなることを特徴とす
る押出ヘッド。It is composed of a mandrel and a die that closely covers the circumferential surface of the mandrel, and the circumferential surface of the mandrel is provided with a plurality of resin flow channels consisting of concave grooves extending downward from positions corresponding to resin injection holes formed in the die. At the same time, a confluence of a plurality of resin flow channels is formed in the resin flow direction, and a resin injection channel consisting of a groove extending in the circumferential direction of the mandrel is formed at the upper end of the plurality of resin flow channels. An extrusion head characterized in that the mandrel is formed so as to be in communication with the mandrel, and the rotation angle of the mandrel can be freely changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2065751A JP2884177B2 (en) | 1990-03-16 | 1990-03-16 | Extrusion head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2065751A JP2884177B2 (en) | 1990-03-16 | 1990-03-16 | Extrusion head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03266624A true JPH03266624A (en) | 1991-11-27 |
| JP2884177B2 JP2884177B2 (en) | 1999-04-19 |
Family
ID=13296038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2065751A Expired - Fee Related JP2884177B2 (en) | 1990-03-16 | 1990-03-16 | Extrusion head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2884177B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100880113B1 (en) * | 2008-09-22 | 2009-01-21 | 최동수 | Direct pressure type head for blower injection transformer |
-
1990
- 1990-03-16 JP JP2065751A patent/JP2884177B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100880113B1 (en) * | 2008-09-22 | 2009-01-21 | 최동수 | Direct pressure type head for blower injection transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2884177B2 (en) | 1999-04-19 |
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