JPH0732030Y2 - Resin plasticizer - Google Patents
Resin plasticizerInfo
- Publication number
- JPH0732030Y2 JPH0732030Y2 JP1990065061U JP6506190U JPH0732030Y2 JP H0732030 Y2 JPH0732030 Y2 JP H0732030Y2 JP 1990065061 U JP1990065061 U JP 1990065061U JP 6506190 U JP6506190 U JP 6506190U JP H0732030 Y2 JPH0732030 Y2 JP H0732030Y2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- screw
- sealing
- resin
- material supply
- 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 - Fee Related
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/55—Screws having reverse-feeding elements
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/54—Screws with additional forward-feeding elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は原料供給部での脱気を有効にするプラスチック
用押出機である二軸及び単軸スクリュの可塑化装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a plasticizing device for twin screw and single screw, which is an extruder for plastics, which enables deaeration in a raw material supply section.
（従来の技術） 一般に押出機の樹脂可塑化装置では、原料供給ホッパー
から供給される原料粒子間にある気体は、可塑化装置内
で樹脂を溶融加圧する時、原料供給ホッパー側へ十分に
抜け切れないままに、溶融樹脂中に含まれた状態で可塑
化装置から吐出されることが多い。そのため、例えば紡
糸用押出機では、糸切れの原因となったり、シート又は
フィルム用押出機では、それ自体が気泡として残るとい
う欠陥を生ずる。また微粉末を多く配合された原料にお
いては、供給原料中に多く含まれた空気を脱気しない
と、スクリュでの圧縮工程で空気と共にスクリュ基部側
に粉体が噴出する現象が発生し、安定した吐出が得られ
ない。(Prior Art) Generally, in a resin plasticizer of an extruder, the gas between the raw material particles supplied from the raw material supply hopper is sufficiently discharged to the raw material supply hopper side when the resin is melt-pressurized in the plasticizer. It is often discharged from the plasticizing device in a state of being contained in the molten resin without being cut. Therefore, for example, a spinning extruder causes yarn breakage, and a sheet or film extruder has a defect that it remains as bubbles. In the case of a raw material containing a large amount of fine powder, unless the air contained in the feed material is deaerated, the phenomenon that powder is ejected to the screw base side together with air during the screw compression process is stable. Discharge cannot be obtained.
この様に原料供給部や可塑化装置の固相樹脂原料供給部
間での脱気を実施する場合、回転するスクリュ軸をシー
ルする方法として、従来は第９図に示す様な方式が採用
されていた。なお、第９図では真空ホッパー３を１個の
み示しているが、通常は直列して接続したバッチ式で使
用されている例が多い。When degassing is performed between the raw material supply section and the solid phase resin raw material supply section of the plasticizer as described above, the method shown in FIG. 9 has been conventionally used as a method for sealing the rotating screw shaft. Was there. Although only one vacuum hopper 3 is shown in FIG. 9, there are many examples in which the vacuum hoppers 3 are usually connected in series and used in a batch system.
さて第９図において真空ホッパー３に生産用原料４を入
れ、真空ポンプ１により脱気体２として排出している。
この時バレル５とスクリュ６及び真空ホッパー３内にあ
る空気及び溶融原料4Aから出る気体等を脱気すると共
に、この空間を大気から密閉するための重要ポイントと
して、回転スクリュ６と駆動部とのシールの問題がある
が、これはシール用パッキン13を用いてシールしてい
た。Now, in FIG. 9, the raw material 4 for production is put into the vacuum hopper 3 and is discharged as the degassed 2 by the vacuum pump 1.
At this time, the air in the barrel 5, the screw 6 and the vacuum hopper 3 and the gas discharged from the molten raw material 4A are degassed, and as an important point for sealing this space from the atmosphere, the rotary screw 6 and the drive unit are There was a sealing problem, but this was sealed using the sealing packing 13.
（考案が解決しようとする課題） 前記の従来装置ではシール用パッキン13を用いている
が、この場合はシール用パッキン13が摩耗したり、劣化
したりしてシール性が低下する問題があり、また単軸ス
クリュの場合は、構造が簡単なため実施も容易である
が、スクリュが２本平行して回転する二軸押出機に対し
ては、構造も複雑のため対応が困難であった。(Problems to be solved by the invention) In the above conventional device, the seal packing 13 is used, but in this case, there is a problem that the seal packing 13 is worn or deteriorated and the sealing property is deteriorated. In the case of a single-screw screw, the structure is simple and therefore easy to implement. However, it is difficult to deal with a twin-screw extruder in which two screws rotate in parallel because the structure is complicated.
本考案は原料中に多く含まれた空気や、可塑化工程で発
生する気体を脱気する時、二軸及び単軸スクリュ基部で
の真空シールを容易に実施できる装置を提供し、前記従
来の課題を解決しようとするものである。The present invention provides an apparatus that can easily perform vacuum sealing at the bases of a twin screw and a single screw when deaerating the air contained in the raw material and the gas generated in the plasticizing process. It is an attempt to solve a problem.
（課題を解決するための手段） このため本考案は、樹脂可塑化装置において、原料供給
口より原料の流れに対して上流側に同上流側に向かって
逆リードスクリュと順リードスクリュとを順に配設し，
かつこの部分を粘性を持った液体で満たすと共に，それ
を囲むバレルとで回転軸シール装置を構成し，かつ可塑
化装置の固相樹脂原料供給部間の所望部位や，原料供給
ホッパー等に気体吸引口を設けてなるもので、これを課
題解決のための手段とするものである。(Means for Solving the Problem) Therefore, in the present invention, in the resin plasticizing device, the reverse lead screw and the forward lead screw are provided in order from the raw material supply port toward the upstream side with respect to the flow of the raw material toward the upstream side. Arranged,
In addition to filling this part with a viscous liquid, the rotary shaft sealing device is composed of the barrel that surrounds it, and gas is supplied to the desired part between the solid-phase resin raw material supply parts of the plasticizer and the raw material supply hopper. A suction port is provided, which serves as a means for solving the problem.
（作用） 本考案はスクリュ軸の真空シールを容易に行うため、原
料供給口の上流側に，同上流側に向かって逆リードスク
リュと順リードスクリュとを順に配設した機構を設ける
ことにより，シール用溶融原料をシール用原料供給スク
リュで供給すると、シール用逆リードスクリュはこれを
スクリュの上流側に押し返し、またシール用順リードス
クリュはスクリュの下流側に送る作用をするため、真空
シール用に使用するシール用溶融原料は少量ですみ、か
つ安定したスクリュ軸の真空シールが可能となる。(Operation) In order to facilitate the vacuum sealing of the screw shaft in the present invention, by providing a mechanism in which the reverse lead screw and the forward lead screw are arranged in this order toward the upstream side of the raw material supply port, When the molten sealing material is supplied by the sealing material supply screw, the reverse lead screw for sealing pushes it back to the upstream side of the screw, and the forward lead screw for sealing functions to send it to the downstream side of the screw. A small amount of molten raw material for sealing is used, and stable vacuum sealing of the screw shaft becomes possible.
（実施例） 以下本考案を図面の実施例について説明すると、第１図
〜第８図は本考案の実施例を示す。先ず第１図は本考案
の第１実施例を示し、バレル５は図示しない外部に装着
されたヒータにより加熱される。このバレル５内にはス
クリュ６が装着されている。また加熱されたバレル５の
スクリュ駆動側、即ちスクリュ基部側には真空ホッパー
３が設けられ、同ホッパー３内には生産用原料４が入れ
られている。通常はこの真空ホッパー３は図示されてい
ないが、直列に配置され、図示しない切換バレルを介し
て接続されている。そして生産用原料４と生産用溶融原
料4Aからの空気及び気体を、真空ポンプ１で脱気体２と
して排出する。(Embodiment) The present invention will be described below with reference to the embodiments of the drawings. FIGS. 1 to 8 show an embodiment of the present invention. First, FIG. 1 shows a first embodiment of the present invention, in which the barrel 5 is heated by an externally mounted heater (not shown). A screw 6 is mounted in the barrel 5. A vacuum hopper 3 is provided on the screw driving side of the heated barrel 5, that is, on the screw base side, and the raw material 4 for production is put in the hopper 3. Normally, the vacuum hoppers 3 are not shown, but they are arranged in series and are connected via a switching barrel (not shown). Then, the air and gas from the raw material 4 for production and the molten raw material 4A for production are discharged as degassed 2 by the vacuum pump 1.
この時大気との遮断は、真空ホッパー３と、スクリュ下
流側は生産用溶融原料4A、及びスクリュ６基部側はシー
ル用逆リードスクリュ6Bとシール用順リードスクリュ6A
を設けた部分と、バレル５で構成された空間に、第２図
に１例として示すホッパー10にシール用原料９を投入
し、図示しない加熱されたバレルとシール用原料供給ス
クリュ11によりシール用溶融原料７を供給することによ
り行い、溶融樹脂により第１図のスクリュ６軸を真空シ
ールさせる。At this time, the air is shut off by the vacuum hopper 3, the molten raw material 4A for production on the downstream side of the screw, and the reverse lead screw 6B for sealing and the forward lead screw 6A for sealing on the base side of the screw 6.
A sealing raw material 9 is put into a hopper 10 shown as an example in FIG. 2 in a space formed by the portion provided with and the barrel 5, and the sealed raw material is fed by a heated barrel and a sealing raw material supply screw 11 (not shown). This is performed by supplying the molten raw material 7, and the screw 6 shaft shown in FIG. 1 is vacuum-sealed by the molten resin.
この時第２図の圧力計８により検出した圧力と、図示し
ない圧力設定器及び比較器により、常に一定圧力以上を
保つ機構を有する。このことにより、第２図に１例とし
て示す二軸押出スクリュのスクリュ６軸の真空シールを
得ることができる。このように第１図では真空ホッパー
３を介して真空ポンプ１による脱気が容易に実施でき、
真空状態による脱気が実施可能となる。また第２図に示
す劣化物抜出し通路14は、スクリュ６軸のシールに使用
したシール用溶融原料７が劣化した時の排出用であり、
通常はプラグ15が閉じられている。At this time, the pressure gauge 8 shown in FIG. 2 and a pressure setting device and a comparator (not shown) are provided to maintain a constant pressure or higher. As a result, a vacuum seal of the screw 6-axis of the twin-screw extrusion screw shown as an example in FIG. 2 can be obtained. Thus, in FIG. 1, deaeration by the vacuum pump 1 can be easily performed through the vacuum hopper 3,
It becomes possible to perform deaeration under vacuum. The deteriorated material discharge passage 14 shown in FIG. 2 is for discharging when the sealing molten raw material 7 used for sealing the screw 6 shaft is deteriorated,
Normally the plug 15 is closed.
第３図はスクリュ６のシール用材料として、粘性を持つ
液体で行う本考案の第２実施例である。第４図は第３図
のＢ〜Ｂ断面図で、ホッパー10にシール用液体材7Aを投
入し、シール用液体供給ポンプ12により、第３図に示す
シール用液体材7Aの如く押し込む方式であり、他は第１
図の場合と同一である。FIG. 3 shows a second embodiment of the present invention in which a viscous liquid is used as the sealing material of the screw 6. FIG. 4 is a sectional view taken along line BB of FIG. 3, in which the sealing liquid material 7A is put into the hopper 10 and is pushed by the sealing liquid supply pump 12 like the sealing liquid material 7A shown in FIG. Yes, others are first
It is the same as in the case of the figure.
第５図は本考案の第３実施例を示し、スクリュ６の軸シ
ール用材料としてホッパー10にシール用原料を投入し、
これを溶融させてシール用溶融材料７として使用するも
のである。FIG. 5 shows a third embodiment of the present invention, in which a sealing raw material is charged into a hopper 10 as a shaft sealing material of the screw 6,
This is melted and used as the sealing molten material 7.
第７図は本考案の第４実施例を示し、スクリュ６の軸シ
ール用液体材7Aとしてホッパー10に粘性を持った液体を
投入し、これでシール用液体材7Aとして使用するもので
ある。FIG. 7 shows a fourth embodiment of the present invention, in which a viscous liquid is introduced into the hopper 10 as the shaft sealing liquid material 7A of the screw 6 and is used as the sealing liquid material 7A.
（考案の効果） 以上詳細に説明した如く本考案は、スクリュ基部に設け
た逆リードスクリュと順リードスクリュを組合せた機構
の部分に、粘性を持った液体を満たすことにより真空シ
ールできる構造としたので、二軸スクリュや単軸スクリ
ュに有効に対応できると共に、原料供給部や固相樹脂原
料供給部間の脱気が効率的にできるため、溶融樹脂中に
気泡を含まない良好な成形品が得られると共に、微粉末
を多く混合した原料を使用する時安定した吐出量が得ら
れる等の効果を奏するものである。(Effects of the Invention) As described in detail above, the present invention has a structure capable of vacuum sealing by filling a viscous liquid in the mechanism part that combines the reverse lead screw and the forward lead screw provided in the screw base. Therefore, it is possible to effectively deal with twin-screw screws and single-screw screws, and it is possible to efficiently deaerate between the raw material supply section and the solid-phase resin raw material supply section, so that a good molded product containing no bubbles in the molten resin can be obtained. In addition to being obtained, there is an effect that a stable discharge amount can be obtained when using a raw material in which a large amount of fine powder is mixed.
第１図は本考案の第１実施例に係る樹脂可塑化装置の側
断面図、第２図は第１図のＡ〜Ａ断面図、第３図は本考
案に係る第２実施例の樹脂可塑化装置の側断面図、第４
図は第３図のＢ〜Ｂ断面図、第５図は本考案に係る第３
実施例の側断面図、第６図は第５図のＣ〜Ｃ断面図、第
７図は本考案に係る第４実施例の樹脂可塑化装置の側断
面図、第８図は第７図のＤ〜Ｄ断面図、第９図は従来の
樹脂可塑化装置を示す側断面図である。 図の主要部分の説明 １……真空ポンプ ２……脱気体 ３……真空ホッパー ４……生産用原料 4A……生産用溶融原料 ５……バレル ６……スクリュ 6A……逆リードスクリュ 6B……順リードスクリュ ７……シール用溶融材料 7A……シール用液体材 ８……圧力計 ９……シール用原料 10……ホッパー 11……シール用原料供給スクリュ1 is a side sectional view of a resin plasticizing apparatus according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a resin of a second embodiment according to the present invention. Sectional side view of plasticizer, 4th
FIG. 5 is a sectional view taken along line BB of FIG. 3, and FIG.
FIG. 6 is a sectional side view of an embodiment, FIG. 6 is a sectional view taken along line CC of FIG. 5, FIG. 7 is a sectional side view of a resin plasticizing device of a fourth embodiment according to the present invention, and FIG. 9 is a side sectional view showing a conventional resin plasticizing device. Description of main parts of the figure 1 ... Vacuum pump 2 ... Degassing 3 ... Vacuum hopper 4 ... Production raw material 4A ... Melting raw material 5 ... Barrel 6 ... Screw 6A ... Reverse lead screw 6B ... … Sequential lead screw 7 …… Melting material for sealing 7A …… Liquid material for sealing 8 …… Pressure gauge 9 …… Raw material for sealing 10 …… Hopper 11 …… Raw material supply screw for sealing
───────────────────────────────────────────────────── フロントページの続き (72)考案者 後藤 幸男 愛知県名古屋市中村区岩塚町字高道１番地 三菱重工業株式会社名古屋機器製作所内 (72)考案者 西川 明 愛知県名古屋市中村区岩塚町字高道１番地 三菱重工業株式会社名古屋機器製作所内 (56)参考文献 特開 昭52−42554（ＪＰ，Ａ) 実開 昭50−148364（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Goto 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya-shi, Aichi Mitsubishi Heavy Industries, Ltd. Nagoya Machinery Works (72) Akira Nishikawa Iwatsuka-cho, Nakamura-ku, Nagoya-shi, Aichi No. 1 in Takadori, Nagoya Machinery Works, Mitsubishi Heavy Industries, Ltd. (56) References JP-A-52-42554 (JP, A) Seki 50-148364 (JP, U)
Claims (1)
原料の流れに対して上流側に，同上流側に向かって逆リ
ードスクリュと順リードスクリュとを順に配設し，かつ
この部分を粘性を持った液体で満たすと共に，それを囲
むバレルとで回転軸シール装置を構成し，かつ可塑化装
置の固相樹脂原料供給部間の所望部位や，原料供給ホッ
パー等に気体吸引口を設けてなることを特徴とする樹脂
可塑化装置。1. In a resin plasticizer, a reverse lead screw and a forward lead screw are arranged in this order from the raw material supply port to the upstream side of the flow of the raw material and toward the upstream side. And a barrel surrounding it to form a rotary shaft sealing device, and a gas suction port is provided in a desired portion between the solid-phase resin raw material supply parts of the plasticizer and in the raw material supply hopper. A resin plasticizing device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990065061U JPH0732030Y2 (en) | 1990-06-20 | 1990-06-20 | Resin plasticizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990065061U JPH0732030Y2 (en) | 1990-06-20 | 1990-06-20 | Resin plasticizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0424324U JPH0424324U (en) | 1992-02-27 |
| JPH0732030Y2 true JPH0732030Y2 (en) | 1995-07-26 |
Family
ID=31596557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990065061U Expired - Fee Related JPH0732030Y2 (en) | 1990-06-20 | 1990-06-20 | Resin plasticizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732030Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542581A (en) * | 1991-08-12 | 1993-02-23 | Furukawa Electric Co Ltd:The | Multi-stage thermoplastic resin extruding device |
| CN107351358B (en) * | 2017-08-31 | 2020-06-16 | 无锡锦和科技有限公司 | Vacuum screw extruder |
-
1990
- 1990-06-20 JP JP1990065061U patent/JPH0732030Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0424324U (en) | 1992-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3860220A (en) | Multi-section screw extruder | |
| US7607817B2 (en) | Extruder having a set back gas-permeable wall portion | |
| US5882558A (en) | Process and apparatus for recycling of synthetic plastics material containing gas | |
| US3867079A (en) | Apparatus for extruding polymeric material | |
| US5490725A (en) | Melt-sealing device for extruders for the processing of thermoplastic polymers or rubber | |
| US3930782A (en) | Apparatus for extruding plastic material | |
| US3407438A (en) | Plasticizing system for plastic materials | |
| US5310256A (en) | Apparatus for mixing and processing plastic material including a delivery pump | |
| JP4669626B2 (en) | Equipment for processing and further processing of thermoplastics | |
| JP2001129823A (en) | Twin-spindle continuous kneader | |
| KR100688868B1 (en) | Method and device for the continuous production of rubber mixtures | |
| US5534204A (en) | Method of injection molding polyethylene terephthalate | |
| US4004787A (en) | Mixing and venting extruder | |
| JPH0732030Y2 (en) | Resin plasticizer | |
| JP3081420B2 (en) | Plasticizing apparatus and plasticizing method | |
| JPH07337B2 (en) | Method for starting an extruder with low material loss in double extrusion for the production of molding materials consisting of various elastic rubber or plastic mixtures, in particular for running surfaces or sides of vehicle tires | |
| JPH11300811A (en) | Extrusion method and screw extrusion machine | |
| US3147514A (en) | Processing plastic and other multiphase materials | |
| JP3217152B2 (en) | Vent extruder | |
| KR102086085B1 (en) | Extruding apparatus for conical twin screw of special type | |
| JPS60116424A (en) | Controlling method of revolutional number of feeder screw | |
| JPH03190709A (en) | Extrusion molding of thermoplastic resin | |
| JPH06254945A (en) | Extrusion machine for deaeration | |
| JP4068692B2 (en) | Twin screw extruder and pressure control method of twin screw extruder | |
| JPS63139706A (en) | Resin plasticator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |