JPH032019A - Mold for extrusion foaming - Google Patents

Mold for extrusion foaming

Info

Publication number
JPH032019A
JPH032019A JP1140161A JP14016189A JPH032019A JP H032019 A JPH032019 A JP H032019A JP 1140161 A JP1140161 A JP 1140161A JP 14016189 A JP14016189 A JP 14016189A JP H032019 A JPH032019 A JP H032019A
Authority
JP
Japan
Prior art keywords
lip
adapter
mold
movable
size
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
Application number
JP1140161A
Other languages
Japanese (ja)
Inventor
Takeshi Takahashi
健 高橋
Chikakatsu Kawasaki
川崎 誓勝
Yoshiro Takahane
高羽 良郎
Masaki Ijiri
井尻 正喜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP1140161A priority Critical patent/JPH032019A/en
Publication of JPH032019A publication Critical patent/JPH032019A/en
Pending legal-status Critical Current

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To change the shape and size, etc., of a product only by transfer of a movable lip member by providing a plurality of nozzle holes different in the shape and size, etc., to the movable lip member and providing this movable lip member between a lip adapter and a lip presser member. CONSTITUTION:In the case of being inclined to change the shape or size of a product, a movable lip member (rotary disk body) 20 is rotated at a required angle in a state wherein only one part of the circumferential part 21 thereof if pinched between a lip adapter 1 and a lip presser member 10. Thereby the required nozzle hole 23 selected from the nozzle hole 23 group concentrically provided to this circumferential part 21 is matched with the center hole of the lip adapter 1 and the opening of the lip presser member 10. the product having the changed shape or size is extruded, foamed and molded by utilizing the nozzle hole 23 present in such a way.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、例えばオレフィン系樹脂のような樹脂と、炭
化水素のような発泡剤との組成物を開放雰囲気中に押し
出して発泡体を成形するための金型に関し、更に詳しく
言えば金型を出た所或いは出口で発泡させる一段発泡用
の金型に関するものである。
Detailed Description of the Invention [Industrial Application Field] The present invention is a method for molding a foam by extruding a composition of a resin such as an olefin resin and a blowing agent such as a hydrocarbon into an open atmosphere. It relates to a mold for foaming, and more specifically to a mold for single-stage foaming that causes foaming to occur at the exit or outlet of the mold.

〔従来の技術〕[Conventional technology]

プラスチックの発泡体の成形方式には、色々の方式が知
られているが、樹脂と発泡剤との混合物を開放雰囲気中
で発泡させる成形方式は、一般に一段発泡法として、例
えば特開昭58−50184号公報にも示されている。
Various methods are known for molding plastic foams, but the molding method in which a mixture of a resin and a foaming agent is foamed in an open atmosphere is generally known as a one-stage foaming method, for example, as described in Japanese Patent Application Laid-Open No. 1983-1983. It is also shown in Japanese Patent No. 50184.

この種発泡剤成形に用いられる金型は、スパイダ型をベ
ースにノズル加工された口金を有するもので、成品の形
状によって、例えば棒状体、板状体等の成品の種類によ
って、その都度油圧装置を使用して金型或いは口金の交
換が行われている。
The mold used for this type of foaming agent molding is based on a spider mold and has a nozzle-processed mouthpiece. Depending on the shape of the product, for example, the type of product such as a rod or plate, the hydraulic pressure The mold or cap is replaced using a .

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで、この種油圧装置を使用した従来の金型交換に
は長時間を要するという欠点がある。特に、押出発泡で
は、口金近傍の樹脂の流動状態、温度等の物理的条件は
、発泡倍率に影響を与え、高倍率の発泡には非常に狭い
条件範囲が要求されるが、このように、交換に長時間要
する従来の金型では、交換中に物理的条件が変化してし
まい、高倍率の発泡が期待できないばかりでなく、成品
にバラツキが生じるという欠点がある。また、油圧装置
を使用しているので、装置が大型化するという欠点もあ
る。
However, conventional mold replacement using this type of hydraulic system has the drawback of requiring a long time. In particular, in extrusion foaming, the flow state of the resin near the die, temperature, and other physical conditions affect the foaming ratio, and a very narrow range of conditions is required for high foaming ratios. Conventional molds that require a long time to be replaced have the drawback that physical conditions change during replacement, not only making it impossible to expect high foaming ratios, but also causing variations in the finished product. Furthermore, since a hydraulic device is used, there is also the disadvantage that the device becomes large in size.

したがって、本発明は樹脂の流動状態、温度等の物理的
条件を一定の狭い範囲に維持して、成品のサイズ、形状
を変更できる押出発泡用金型を提供することを主目的と
し、更に別の目的は装置が小形で安価であると共に作業
性の容易な押出発泡用金型を提供することである。
Therefore, the main object of the present invention is to provide a mold for extrusion foaming that can change the size and shape of a product by maintaining the physical conditions such as the flow state of the resin and the temperature within a certain narrow range. The purpose of the present invention is to provide a mold for extrusion foam that is small in size, inexpensive, and easy to work with.

〔課題を解決するための手段〕[Means to solve the problem]

本発明は、上記目的を達成するために、リップアダプタ
とリップ押え部材との間に移動リップ部材が設けられる
。そしてこの移動リップ部材には形、サイズ等が異なる
複数個のノズル孔が設けられる。このような手段を適用
して、本発明は、樹脂と発泡剤との組成物を開放雰囲気
中に押し出して発泡体を成形する一段発泡用の金型であ
って、咳金型は、略中心部にはテーパ状の中心孔を供え
たりノブアダプタと、該リップアダプタに取付けられる
とき、該リップアダプタの中心孔と整合する開口を有す
るリップ押え部材と、前記リップアダプタとリップ押え
部材との間に移動可能に介装される移動リップ部材とか
ら成り、該移動リップ部材には、前記リップアダプタの
中心孔及びリップ押え部材の開口と整合する位置を取り
得る、形、サイズ等の異なるノズル孔が複数個形成され
るように構成される。
In order to achieve the above object, the present invention provides a movable lip member between a lip adapter and a lip pressing member. This movable lip member is provided with a plurality of nozzle holes having different shapes, sizes, etc. By applying such means, the present invention provides a single-stage foaming mold for molding a foam by extruding a composition of a resin and a foaming agent into an open atmosphere. a knob adapter provided with a tapered center hole in the part; a lip presser member having an opening that aligns with the center hole of the lip adapter when attached to the lip adapter; and a gap between the lip adapter and the lip presser member. a movable lip member movably interposed in the lip adapter, and the movable lip member has nozzle holes of different shapes and sizes that can be positioned to align with the center hole of the lip adapter and the opening of the lip presser member. It is configured such that a plurality of are formed.

〔作 用〕[For production]

本発明は、上記のように構成されているので、従来のも
のと同様に樹脂を発泡させることができる。すなわち発
泡剤を含浸させた樹脂或いは発泡剤を混合して樹脂を押
出機で加熱、溶融し、そして金型を介して雰囲気に押し
出すと、樹脂は発泡して、所望の成品が得られる。そし
て、合成品の形状或いはサイズを変えたいときは、移動
可能な移動リップ部材を適当に移動させて、所望のノズ
ル孔をリップアダプタの中心孔及びリップ押え部材の開
口とに整合させる。そして、上記のように押し出し発泡
させる。
Since the present invention is configured as described above, the resin can be foamed in the same manner as the conventional ones. That is, when a resin impregnated with a foaming agent or a foaming agent is mixed, the resin is heated and melted in an extruder, and then extruded into the atmosphere through a mold, the resin foams and a desired product is obtained. When the shape or size of the composite product is desired to be changed, the movable lip member is appropriately moved to align the desired nozzle hole with the center hole of the lip adapter and the opening of the lip presser member. Then, it is extruded and foamed as described above.

以上のように、本発明によると、形状、サイズ等がそれ
ぞれ異なる複数個のノズル孔が設けられている移動リッ
プを単に移動させるだけで、成品の形状、サイズ等を変
更できる。したがって、本発明によると、従来のノズル
口金の交換に比較して、極めて短時間に変更でき、作業
能率が向上すると共に、発泡に要求される物理的条件を
正確に維持でき、発泡倍率の高い高品位の成品が得られ
る。また、本発明によると、油圧装置などの大型装置を
必要としないので、装置全体をコンパクトに安価に提供
できるという特有の効果も得られる。
As described above, according to the present invention, the shape, size, etc. of a product can be changed simply by moving the movable lip provided with a plurality of nozzle holes each having a different shape, size, etc. Therefore, according to the present invention, compared to the conventional nozzle replacement, the nozzle cap can be changed in an extremely short time, work efficiency is improved, the physical conditions required for foaming can be accurately maintained, and the foaming ratio is high. High quality products can be obtained. Further, according to the present invention, since a large device such as a hydraulic device is not required, a unique effect can be obtained in that the entire device can be provided compactly and at low cost.

〔実施例〕〔Example〕

本発明の実施に際しては、移動リップ部材は、回転円板
体として、或いは帯状体として実施することができる。
In implementing the invention, the moving lip member can be implemented as a rotating disc or as a strip.

そして、これらの円板体或いは帯状体は、手動により移
動させることもできるし、またモータなどの動力によっ
て自動制御的にスライドさせるように実施することもで
きる。しかし図示の例では、動力装置は示されていない
。また移動リップ部材には、目印を付すこともできる。
These disk bodies or strip bodies can be moved manually, or can be slid under automatic control using power from a motor or the like. However, in the illustrated example, the power plant is not shown. The movable lip member can also be marked.

目印によってノズル孔の位置合わせができて好都合であ
る。
It is convenient to be able to align the nozzle holes using the marks.

以下、本発明の詳細な説明する。The present invention will be explained in detail below.

さて、第1図を参照すると、本実施例に係わる金型は、
リップアダプタ1と、リップ押え部材10と、これらの
間に介装された状態で図示されている移動リップ部材、
すなわち回転円板体2oとから概略構成されているとい
うことが、−見して理解される。
Now, referring to FIG. 1, the mold according to this example is as follows:
A lip adapter 1, a lip pressing member 10, and a movable lip member shown interposed between them.
In other words, it can be understood from the perspective that it is roughly composed of the rotating disk body 2o.

リップアダプタ1は、押出機本体2に、複数本のボルト
3,3・・・によって固定されるようになっている。そ
して、その中心部には比較的大径になった樹脂溜ゾーン
5が形成され、この樹脂溜ゾーンからテーパ状に縮径さ
れて中心孔6に到っている。
The lip adapter 1 is fixed to the extruder main body 2 by a plurality of bolts 3, 3, . . . . A resin reservoir zone 5 having a relatively large diameter is formed in the center thereof, and the resin reservoir zone tapers in diameter to reach the center hole 6.

リップ押え部材10は、その−側面は、リップアダプタ
1に接し、他側面は開放雰囲気中に面するようにして、
複数本のポル1−11.11・・・によりリップアダプ
タに取付けられるようになっている。そして、その中心
部分には、比較的大径の一部テーパ状に形成されている
開口12が設けられている。
The lip presser member 10 has one side in contact with the lip adapter 1 and the other side facing the open atmosphere.
It can be attached to the lip adapter by a plurality of ports 1-11, 11.... In the center thereof, an opening 12 having a relatively large diameter and partially tapered is provided.

回転円板体20は、その円周部21の一部のみがリップ
アダプタ1とリップ押え部材10との間に挟まれた状態
で回転可能に設けられている。このように、円周部21
のみが挟持された状態で回転するために、回転中心軸2
2は、押出機本体2の軸心から変位されている。本実施
例が適用される一段発泡法においては、その背圧すなわ
ち樹脂圧は、せいぜい高くて30kg/c+fl程度で
比較的低いので、シールは格別必要としないが、回転円
板体20を案内する役目も果たす段部7,13が円弧状
に、リップアダプタ1とリップ押え部材10とにそれぞ
れが協働するように形成されている。
The rotating disk body 20 is rotatably provided with only a part of its circumferential portion 21 sandwiched between the lip adapter 1 and the lip presser member 10. In this way, the circumferential portion 21
The center axis of rotation 2 rotates with the
2 is displaced from the axis of the extruder main body 2. In the one-stage foaming method to which this embodiment is applied, the back pressure, that is, the resin pressure, is relatively low, at most about 30 kg/c+fl, so a seal is not particularly required, but it is necessary to guide the rotating disk body 20. Step portions 7 and 13, which also serve the purpose, are formed in an arc shape so as to cooperate with the lip adapter 1 and the lip pressing member 10, respectively.

回転円板体20の円周部21には、第2図に示されてい
るように同心的に複数個のノズル孔23.23・・・が
設けられている。そして、これらのノズル孔は形状、サ
イズ等がそれぞれ異なり、したがって所望のノズル孔2
3がリップアダプタ1の中心孔6と整合するように回転
円板体20を回転させて、樹脂を押し出すと所望の成品
が得られる。
A plurality of nozzle holes 23, 23, . . . are provided concentrically in the circumferential portion 21 of the rotating disk body 20, as shown in FIG. These nozzle holes have different shapes, sizes, etc., and therefore, the desired nozzle hole 2
3 is aligned with the center hole 6 of the lip adapter 1, and the desired product is obtained by extruding the resin.

なお、リップ押え部材10の取付はボルト11と、回転
円板体20とが回転時に干渉するときは、ボルト逃げ用
の透孔24を、回転円板体20に円弧状に形成する。こ
のように透孔を形成したときは、回転円板体は所定の範
囲で回転可能である。また回転円板体を、回転させる前
に所定の温度に加温しておくことにより、ノズル孔を変
更させる前後の温度変化をなくし、高品位の製品を得る
ことができる。
Note that when the lip presser member 10 is attached, when the bolts 11 and the rotary disk body 20 interfere with each other during rotation, a through hole 24 for bolt escape is formed in the rotary disk body 20 in an arc shape. When the through holes are formed in this way, the rotating disk body can rotate within a predetermined range. Furthermore, by heating the rotating disk body to a predetermined temperature before rotating it, it is possible to eliminate temperature changes before and after changing the nozzle hole, and to obtain a high-quality product.

第3,4図には、本発明の他の実施例が示されている。3 and 4 show another embodiment of the invention.

本実施例が第1.2図に示す実施例と相違する点は移動
リップ部材が帯状体30から構成されている点である。
This embodiment differs from the embodiment shown in FIG. 1.2 in that the movable lip member is comprised of a strip 30.

したがって、同じような部材には同じ参照符号を付して
重複説明を省略する。
Therefore, similar members will be given the same reference numerals and repeated explanation will be omitted.

なお、本実施例のように、ノズル孔31.31・・・が
対をなして設けられていると、第1.2図に示す例とは
異なり、板状の発泡体が得られる。また帯状体で移動リ
ップが構成されると、第4図に示されているように、取
付ポル)11.11間に帯状体30を通することができ
るので、帯状体とボルトとが干渉することがないという
効果が得られる。
Note that, when the nozzle holes 31, 31, . . . are provided in pairs as in this embodiment, a plate-shaped foam is obtained, unlike the example shown in FIG. 1.2. Furthermore, if the movable lip is constructed of a strip, as shown in FIG. You can get the effect that there is no problem.

〔効 果〕〔effect〕

以上詳述したように、本発明によるとリップアダプタ押
え部材との間に、形状、サイズ等の異なるノズル孔が複
数個設けられている移動リップ部材が設けられているの
で、この移動リップ部材を移動させるだけで成品の形状
、サイズ等を変更できる。しかも移動させるだけである
から、作業が短時間に終わり、したがって樹脂の流動状
態、温度等の諸物埋置を変化させることなく、成品を変
更できるという本発明特有の効果が得られる。また移動
リップ部材を設けるだけであるから構造が簡単で、安価
に提供できるという利点もある。
As described in detail above, according to the present invention, a movable lip member having a plurality of nozzle holes of different shapes, sizes, etc. is provided between the lip adapter holding member and the movable lip member. You can change the shape, size, etc. of the finished product just by moving it. Moreover, since it is only moved, the work can be completed in a short time, and the unique effect of the present invention is that the finished product can be changed without changing the flow state of the resin, temperature, etc. Further, since only the moving lip member is provided, the structure is simple and can be provided at low cost.

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

図面は本発明の実施例を示し、第1は第1実施例を示す
断面図、第2図はその側面図、第3図は他の実施例を示
す断面図、第4図はその側面図である。 ■・・・リップアダプタ、5・・・樹脂溜ゾーン、6・
・・中心孔、10・・・リップ押え部材、12・・・開
口、20・・・回転円板体、23・・・ノズル孔、30
・・・帯状体、31・・・ノズル孔。
The drawings show embodiments of the present invention, and FIG. 1 is a cross-sectional view of the first embodiment, FIG. 2 is a side view thereof, FIG. 3 is a cross-sectional view of another embodiment, and FIG. 4 is a side view thereof. It is. ■...Lip adapter, 5...Resin reservoir zone, 6...
... Center hole, 10... Lip pressing member, 12... Opening, 20... Rotating disk body, 23... Nozzle hole, 30
... Band-shaped body, 31... Nozzle hole.

Claims (1)

【特許請求の範囲】 1、樹脂と発泡剤との組成物を開放雰囲気中に押し出し
て発泡体を成形する一段発泡用の金型であって、 該金型は、略中心部にはテーパ状の中心孔を供えたリッ
プアダプタと、該リップアダプタに取付けられるとき、
該リップアダプタの中心孔と整合する開口を有するリッ
プ押え部材と、前記リップアダプタとリップ押え部材と
の間に移動可能に介装される移動リップ部材とから成り
、該移動リップ部材には、前記リップアダプタの中心孔
及びリップ押え部材の開口と整合する位置を取り得る、
形、サイズ等の異なるノズル孔が複数個形成されている
ことを特徴とする押出発泡用金型。
[Claims] 1. A single-stage foaming mold for molding a foam by extruding a composition of a resin and a foaming agent into an open atmosphere, the mold having a tapered shape approximately at the center. a lip adapter provided with a center hole, and when attached to the lip adapter,
It consists of a lip pressing member having an opening aligned with the center hole of the lip adapter, and a movable lip member movably interposed between the lip adapter and the lip pressing member, and the movable lip member includes the lip pressing member. can take a position that aligns with the center hole of the lip adapter and the opening of the lip presser member;
A mold for extrusion foaming, characterized in that a plurality of nozzle holes of different shapes and sizes are formed.
JP1140161A 1989-05-31 1989-05-31 Mold for extrusion foaming Pending JPH032019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1140161A JPH032019A (en) 1989-05-31 1989-05-31 Mold for extrusion foaming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1140161A JPH032019A (en) 1989-05-31 1989-05-31 Mold for extrusion foaming

Publications (1)

Publication Number Publication Date
JPH032019A true JPH032019A (en) 1991-01-08

Family

ID=15262293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1140161A Pending JPH032019A (en) 1989-05-31 1989-05-31 Mold for extrusion foaming

Country Status (1)

Country Link
JP (1) JPH032019A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102613154A (en) * 2012-03-27 2012-08-01 泰山医学院 Method for controlling flies by utilizing two kinds of poison fly ropes
TWI611904B (en) * 2015-10-13 2018-01-21 財團法人金屬工業研究發展中心 Extrusion device and extrusion method for manufacturing unequal section extrusions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542888A (en) * 1978-09-25 1980-03-26 Arai Pump Mfg Co Ltd Tubing device for rubber
JPS58175645A (en) * 1982-04-08 1983-10-14 Mitsui Toatsu Chem Inc Restrictor device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542888A (en) * 1978-09-25 1980-03-26 Arai Pump Mfg Co Ltd Tubing device for rubber
JPS58175645A (en) * 1982-04-08 1983-10-14 Mitsui Toatsu Chem Inc Restrictor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102613154A (en) * 2012-03-27 2012-08-01 泰山医学院 Method for controlling flies by utilizing two kinds of poison fly ropes
TWI611904B (en) * 2015-10-13 2018-01-21 財團法人金屬工業研究發展中心 Extrusion device and extrusion method for manufacturing unequal section extrusions

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