JPH03158220A - Double screw extruder - Google Patents
Double screw extruderInfo
- Publication number
- JPH03158220A JPH03158220A JP1297152A JP29715289A JPH03158220A JP H03158220 A JPH03158220 A JP H03158220A JP 1297152 A JP1297152 A JP 1297152A JP 29715289 A JP29715289 A JP 29715289A JP H03158220 A JPH03158220 A JP H03158220A
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- blocking wall
- path resistance
- screw
- twin
- 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
- 238000007872 degassing Methods 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims description 25
- 238000004898 kneading Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 230000010006 flight Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract 5
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 18
- 229920005989 resin Polymers 0.000 description 18
- 239000002994 raw material Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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
- B29C48/63—Screws having sections without mixing elements or threads, i.e. having cylinder shaped sections
-
- 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
- B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
-
- 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
- B29C48/405—Intermeshing co-rotating screws
-
- 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
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
-
- 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
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
Abstract
Description
【発明の詳細な説明】 （イ）ａ業上の利用分野 本発明は、２ＩｌｌｌＩｌ押出機に関するものである。[Detailed description of the invention] (b) Field of use in business a. The present invention relates to a 2IllllIl extruder.
（ロ）従来の技術
２軸押出機の場合に、脱ガス部の上流側及び下流側のシ
ールのために、実開昭５５−４５５５３号公報に示され
るようなリングを用いたものがある。両スクリューに互
いちがいに設けたリングによって樹脂の流れに抵抗を与
え、この状態で樹脂の表面更新を行うと共に排気を行う
ことにより不要なガスの除去を行う。また、反応部で樹
脂と反応溶液とを反応作用させる場合には、リングは反
応部の下流側にも設けられ、これにより滞留時間をかけ
て反応を調整する。リングの代わりに逆送りスクリュー
も用いられる。(b) Conventional technology Some twin-screw extruders use rings as shown in Japanese Utility Model Application Publication No. 55-45553 to seal the upstream and downstream sides of the degassing section. Resistance is provided to the flow of the resin by rings provided on both screws at different positions, and in this state, the surface of the resin is renewed and unnecessary gas is removed by exhausting the resin. Further, when the resin and the reaction solution are caused to react in the reaction section, the ring is also provided on the downstream side of the reaction section, thereby controlling the reaction by taking residence time. Reversing screws are also used instead of rings.
（ハ）発明が解決しようとする課題
上述のように、流路抵抗を与えるリングは、左右のスク
リューに互いちがいに配置されており、こわらの間のす
きまを通って樹脂が流れるように構成されている。リン
グの間のすきまを通過した樹脂は両方のスクリューに等
分されず、いずれか方のスクリュー側に−Ｓ量に流れる
傾向がある。(c) Problems to be Solved by the Invention As mentioned above, the rings that provide flow path resistance are arranged differently on the left and right screws, and the resin is configured to flow through the gap between the stiffeners. ing. The resin that has passed through the gap between the rings is not divided equally between both screws, but tends to flow to either screw side in an amount of -S.
このため、脱ガス部で効率のよい脱ガスを行うことがで
きない。また、樹脂の種類やスクリューの回転速度など
の運転条件に応じてリングの寸法を変える必要かある。For this reason, efficient degassing cannot be performed in the degassing section. In addition, it may be necessary to change the dimensions of the ring depending on operating conditions such as the type of resin and the rotational speed of the screw.
一方、逆送りスクリューの場合には、逆送り方向の送り
能力を増大させて脱ガス効果を向上しようとすると、ベ
ントアップ現象（樹脂がベントロに盛り上がってくる現
象）を発生する。いずれにしても脱ガス部及び反応部の
条件を所望どおり精密に設定することが困難である。特
に、運転中に微調整を行うことは不可能である。On the other hand, in the case of a reverse-feeding screw, if an attempt is made to improve the degassing effect by increasing the feeding capacity in the reverse-feeding direction, a vent-up phenomenon (a phenomenon in which resin swells up in the vent) occurs. In any case, it is difficult to precisely set the conditions of the degassing section and the reaction section as desired. In particular, it is not possible to make fine adjustments during operation.
本発明はこのような課題を解決することを目的としてい
る。The present invention aims to solve these problems.
（ニ）３題を解決するための手段
本発明は、流路抵抗を精密に制御可能な流路抵抗′ＪＡ
整装置を複数個設けることにより、上記課題を解決する
。すなわち、本発明による２軸押出機は２バレル（１０
）の軸方向複数の位置にそれぞれ流路抵抗調整装置（８
０及び８１）が設けられており、各流路抵抗調整装置は
、スクリュー（１２及び１３）のフライトの途中に配置
されフライト外径よりも小径の円柱状部（１２ａ及び１
３ａ）と、この円柱状部に対応する２・軸穴の軸方向位
置に配置されスクリューの円柱状部に小さいすきまでは
まり合うように他の部分よりも小径とされた内径部を有
する遮断壁部（３３及び３５）と、２軸穴の遮断壁部よ
りも上流側を２軸穴の遮断壁部よりも下流側に連通させ
るように遮断壁部に設けられた接続通路（３９及び４１
）と、接続通路の通路断面積を制御可能な弁（４３及び
４５）と、を有している。なお、上記かっこ内の符号は
後述の実施例の対応する部材をンｖ９す。(D) Means for Solving the Three Problems The present invention provides a flow path resistance 'JA' that can precisely control the flow path resistance.
The above problem is solved by providing a plurality of adjustment devices. That is, the twin screw extruder according to the present invention has two barrels (10
) at multiple positions in the axial direction of the flow path resistance adjusting device (8
0 and 81), and each flow path resistance adjusting device is provided with a cylindrical part (12a and 1
3a) and a blocking wall corresponding to the cylindrical part 2, which is arranged at an axial position of the shaft hole and has an inner diameter part smaller than other parts so as to fit into the cylindrical part of the screw with a small gap. (33 and 35) and connection passages (39 and 41) provided in the blocking wall so as to communicate the upstream side of the blocking wall of the biaxial hole with the downstream side of the blocking wall of the biaxial hole.
), and valves (43 and 45) that can control the passage cross-sectional area of the connecting passage. Note that the reference numerals in parentheses above refer to corresponding members in the embodiments described later.
（ホ）作用
遮断壁部の上流側の溶融原料は、接続通路を通してのみ
下流側に流れることができる。接続通路には弁が設けら
れており、これの開度に応じて所定の速度で溶融原料が
通過する。従って、接続通路をほぼ完全に遮断する状態
から接続通路を全開する状態まで、溶融原料の流れを任
意に制御することができる。また２１ＩＴ４穴の左右に
均等に溶融原料を流すことができる。これにより、２つ
の流路抵抗調整装置間の溶融原料の滞留状態を所望どお
り１μＩ整することかてき、脱ガス度合、反応度合など
を所望どおりに工１整することかできる。しかも、この
：Ａ整作業を運転中においても行うことかできる。(e) The molten raw material on the upstream side of the action blocking wall can flow downstream only through the connecting passage. A valve is provided in the connecting passage, and the molten raw material passes through it at a predetermined speed depending on the degree of opening of the valve. Therefore, the flow of the molten raw material can be arbitrarily controlled from a state where the connecting passage is almost completely blocked to a state where the connecting passage is fully opened. Furthermore, the molten raw material can be evenly flowed to the left and right sides of the 21IT four holes. As a result, the retention state of the molten raw material between the two flow path resistance adjusting devices can be adjusted by 1 μI as desired, and the degree of degassing, the degree of reaction, etc. can be adjusted as desired. Furthermore, this A adjustment work can be performed even while the vehicle is in operation.
（へ）実施例
（第１実施例）
第１図に本発明による２軸押出機を示す。この２軸押出
機は、多数の分割バレルを連結することにより構成した
バレル１０と、これの２軸穴内に挿入した２本のスクリ
ュー１２及び１３（なお、スクリュー１３は第１図では
図示されてない）とを有している。この２軸押出機は、
原料の流れ方向で上流側から機能に応じて供給部１４、
混練部１６、混練度調整部１８、脱ガス部２４、シール
部２６、及び計量供給部２８に区分される。(f) Example (First Example) FIG. 1 shows a twin-screw extruder according to the present invention. This twin-screw extruder includes a barrel 10 constructed by connecting a large number of divided barrels, and two screws 12 and 13 inserted into the twin-screw holes of the barrel (screw 13 is not shown in FIG. 1). (no). This twin screw extruder is
From the upstream side in the flow direction of the raw material, the supply unit 14,
It is divided into a kneading section 16, a kneading degree adjusting section 18, a degassing section 24, a sealing section 26, and a metering section 28.
供給部１４には原料供給口１５が設けられており、また
脱ガス部２４にはベントロ２５か設けられている。混練
度調整部１８及びシール部２６にそれぞれ流路抵抗調整
装置８０及び８１が設けられている。The supply section 14 is provided with a raw material supply port 15, and the degassing section 24 is provided with a vent 25. Flow path resistance adjusting devices 80 and 81 are provided in the kneading degree adjusting section 18 and the sealing section 26, respectively.
流路抵抗調整装置８０は、第２〜５図に示すように、バ
レルの２軸穴内径部に設けられた遮断壁部３３及び３５
を有している。遮断壁部３３及び３５は、スクリュー１
２及び１３の円柱状部１２ａ及び１３ａの全長にわたっ
て設けられている。すなわち、フライトが設けられてい
ない円柱状部１２ａ及び１３ａの全長が遮断壁部３３及
び３５の内径部にはまり合っている。従って、フライト
の円柱状部側端面１２ｂ及び１３ｂは遮断壁部３３及び
３５の壁面に小さいすきまを置いて対面することになる
。遮断壁部３３及び３５には、接続通路３９及び４１が
設けられている。第５図に示すように、接続通路３９は
、スクリュー１２配置側の穴の遮断壁部３３の上流側を
、スクリュー１３配置側の穴の遮断壁部３５の下流側に
接続するように設けられている。一方、接続通路４１は
、スクリューエコ配置側の穴の遮断壁部３５の上流側を
、スクリュー１２配置側の穴の遮断壁部３３の下流側に
接続するように設けられている。この接続通路３９及び
４１に弁４３及び４５が設けられている（第４図参照。As shown in FIGS. 2 to 5, the flow path resistance adjusting device 80 includes blocking wall portions 33 and 35 provided at the inner diameter portion of the biaxial hole of the barrel.
have. The blocking wall parts 33 and 35 are connected to the screw 1
It is provided over the entire length of the columnar parts 12a and 13a of Nos. 2 and 13. That is, the entire lengths of the cylindrical portions 12a and 13a, which are not provided with flights, fit into the inner diameter portions of the blocking wall portions 33 and 35. Therefore, the cylindrical portion side end surfaces 12b and 13b of the flights face the wall surfaces of the blocking walls 33 and 35 with a small gap left therebetween. Connecting passages 39 and 41 are provided in the blocking walls 33 and 35 . As shown in FIG. 5, the connection passage 39 is provided to connect the upstream side of the blocking wall 33 of the hole on the screw 12 placement side to the downstream side of the blocking wall 35 of the hole on the screw 13 placement side. ing. On the other hand, the connection passage 41 is provided so as to connect the upstream side of the blocking wall portion 35 of the hole on the screw eco placement side to the downstream side of the blocking wall portion 33 of the hole on the screw 12 placement side. Valves 43 and 45 are provided in these connecting passages 39 and 41 (see FIG. 4).
なお、弁４５は図示されていないが、弁４３と同じもの
である）。弁４３（及び４５）は第４図に示す状態では
２軸穴間を接続しており、この状悪か６９０度回転した
状態では両者間の接続を遮断する。弁４３及び４５は、
第１図に示すモータ８２及び歯車機構８４によって回転
駆動される。Although the valve 45 is not shown, it is the same as the valve 43). In the state shown in FIG. 4, the valves 43 (and 45) connect the two shaft holes, and if the valves 43 (and 45) are rotated 690 degrees, the connection between the two is cut off. Valves 43 and 45 are
It is rotationally driven by a motor 82 and a gear mechanism 84 shown in FIG.
流路抵抗調整装置８１は流路抵抗調整装置８０とまった
く同様のものである。The flow path resistance adjustment device 81 is completely similar to the flow path resistance adjustment device 80.
次にこの実施例の作用について説明する。２１１１１ｈ
押出機のバレル１０内に原料供給口１５から投入された
原料は、スクリュー１２及び１３によって上流側から下
流側へ、すなわち第１図中で右方向へ、移動されていく
。混練度調整部１８で原料の流れが；し１限され、混練
部１６において所定どおりの混練が行われる。すなわち
、モータ８２を作動させて弁４３及び４５によって接続
通路３９及び４１の開度を所定の状態に設定し、原料の
移動量を調整することができる。接続通路３９及び４１
の通路断面積を小さくすることにより混練部１６に樹脂
が充満し、ここで樹脂は大きいせん新作用を受け、溶融
・混練される。樹脂の混練度は、樹脂の混練部１６にお
ける滞留時間によって左右される。樹脂の滞留時間は接
続通路３９及び４１の開度によって調節される。実質的
にすべての樹脂か接続通路３９及び４１を通過するので
、これの開度を調節することにより、所望とあり精密に
混練度を調整することができる。Next, the operation of this embodiment will be explained. 21111h
The raw material introduced into the barrel 10 of the extruder from the raw material supply port 15 is moved by the screws 12 and 13 from the upstream side to the downstream side, that is, rightward in FIG. 1. The kneading degree adjusting section 18 limits the flow of the raw materials, and the kneading section 16 performs the kneading as prescribed. That is, by operating the motor 82 and setting the opening degrees of the connecting passages 39 and 41 to a predetermined state using the valves 43 and 45, the amount of movement of the raw material can be adjusted. Connection passages 39 and 41
By reducing the cross-sectional area of the passageway, the kneading section 16 is filled with resin, where the resin is subjected to a large plunging action and is melted and kneaded. The degree of kneading of the resin depends on the residence time of the resin in the kneading section 16. The residence time of the resin is adjusted by the opening degree of the connecting passages 39 and 41. Since substantially all of the resin passes through the connecting passages 39 and 41, by adjusting the degree of opening of these, the degree of kneading can be adjusted precisely as desired.
流路抵抗調整装置８０を通過した溶融原料は、次に脱ガ
ス部２４において不要なガス分が除去される。すなわち
、流路抵抗調整装置８１によって原料の流れに所定の抵
抗を与えた状態で、ベントロ２５から排気することによ
り、不要なガス分を除去することができる。この場合の
原料の滞留時間及びバレルの２軸穴の充填比率を、前述
と同様に流路抵抗調整装置８１によって所望どおり調整
することかできるので、脱ガス効果を高めることかでき
る。また、樹脂の接続通路３９及び４１への流れは、ス
クリュー１２及び１３の回転方向にかかわらず、左右均
等に分配することができる。The molten raw material that has passed through the flow path resistance adjusting device 80 is then subjected to a degassing section 24 where unnecessary gas is removed. That is, unnecessary gas can be removed by exhausting the gas from the vent 25 while applying a predetermined resistance to the flow of the raw material using the flow path resistance adjusting device 81. In this case, the residence time of the raw material and the filling ratio of the biaxial hole in the barrel can be adjusted as desired by the flow path resistance adjusting device 81 as described above, so that the degassing effect can be enhanced. Furthermore, the flow of resin into the connecting passages 39 and 41 can be equally distributed on the left and right sides, regardless of the rotation direction of the screws 12 and 13.
このように、脱ガス部２４の＠後における原料の流れを
精密に制御可能であるので、原料、スクリュー１２及び
１３の回転速度などの運転条件が変更となった場合にも
容易に所望の脱カス度合を設定することができる。In this way, the flow of the raw material after the degassing section 24 can be precisely controlled, so even if the operating conditions such as the raw material and the rotational speed of the screws 12 and 13 are changed, the desired degassing can be easily achieved. You can set the degree of scum.
（第２実施例）
第６図に第２実施例を示す。この第２実施例は、上述の
第１実施例の流路抵抗調整装置８１の下流側に、ベント
ロ２７を有する第２の脱ガス部９０を設けたものである
。これにより更に脱ガス効果を高めることができる。(Second Embodiment) FIG. 6 shows a second embodiment. In this second embodiment, a second degassing section 90 having a vent hole 27 is provided downstream of the flow path resistance adjusting device 81 of the first embodiment. This can further enhance the degassing effect.
（第３実施例）
第７図に第３実施例を示す。この第３実施例は、上述の
第１実施例の流路抵抗調整装！Ｉ￥８０の下流側に反応
部９２を設けたものである。反応部９２には、反応させ
るための溶液を注入するための７Ｆ人［１９４が設けら
れている。流路抵抗調整装置８１の開度を調整すること
のにより、溶液を樹脂に効果的に織り込ませるためのせ
ん新作用の度合及び溶液を樹脂に反応させるための適切
な滞留時間を所望どおり調整することができる。これに
より、適切な反応作用を起こさせることができる。(Third Embodiment) FIG. 7 shows a third embodiment. This third embodiment is the same as the flow path resistance adjusting device of the first embodiment described above! A reaction section 92 is provided on the downstream side of I¥80. The reaction section 92 is provided with a 7F person [194] for injecting a solution for reaction. By adjusting the opening degree of the flow path resistance adjusting device 81, the degree of renewal effect for effectively weaving the solution into the resin and the appropriate residence time for causing the solution to react with the resin can be adjusted as desired. be able to. This allows an appropriate reaction to occur.
（ト）発明の詳細
な説明してきたように、本発明によると、流路抵抗を精
密に制御可能な流路抵抗調整装置を複数個設けたので、
樹脂の流れを精密に調整することが可能となり、所望ど
おりに脱ガス度合、反応度合などを調整することができ
る。また、この調整作業は運転中にも行うことができる
。(g) As described in detail, according to the present invention, a plurality of flow path resistance adjusting devices capable of precisely controlling flow path resistance are provided.
It becomes possible to precisely adjust the flow of the resin, and the degree of degassing, degree of reaction, etc. can be adjusted as desired. Further, this adjustment work can be performed even during operation.
第１図は本発明の実施例である２軸押出機を示す図、第
２図は流路抵抗調整装置を示す図、第３図は第２図のＩ
ＩＩ−ＩＩＩ線に沿う断面図、第４図は第３図の［Ｖ−
ＩＶ線に沿う断面図、第５図は流路抵抗調整装置を示す
斜視図、第６図は第２実施例を示す図、第７図は第３実
施例を示す図である。
１０・ ・バレル、１２．１３・ ・スクリュー、１２
ａ、１３ａ−−−円柱状部、１８・・・混練度調整部、
３３．３５・遮断壁部、３９．４１・・・接続通路、４
３．４５・・・弁。Fig. 1 is a diagram showing a twin-screw extruder which is an embodiment of the present invention, Fig. 2 is a diagram showing a flow path resistance adjusting device, and Fig. 3 is a diagram showing the I of Fig. 2.
A sectional view taken along the line II-III, FIG.
5 is a perspective view showing the flow path resistance adjusting device, FIG. 6 is a view showing the second embodiment, and FIG. 7 is a view showing the third embodiment. 10. ・Barrel, 12.13. ・Screw, 12
a, 13a---cylindrical part, 18...kneading degree adjustment part,
33.35・Blocking wall part, 39.41... Connection passage, 4
3.45...Valve.
Claims (1)
軸のスクリューが設けられている２軸押出機において、 バレルの軸方向複数の位置にそれぞれ流路抵抗調整装置
が設けられており、 各流路抵抗調整装置は、スクリューのフライトの途中に
配置されフライト外径よりも小径の円柱状部と、この円
柱状部に対応する２軸穴の軸方向位置に配置されスクリ
ューの円柱状部に小さいすきまではまり合うように他の
部分よりも小径とされた内径部を有する遮断壁部と、２
軸穴の遮断壁部よりも上流側を２軸穴の遮断壁部よりも
下流側に連通させるように遮断壁部に設けられた接続通
路と、接続通路の通路断面積を制御可能な弁と、を有し
ていることを特徴とする２軸押出機。 ２、流路抵抗調整装置の遮断壁部はスクリューの円柱状
部の全長に対応する長さにわたって設けられており、遮
断壁部には、一方の穴側の遮断壁部よりも上流側を他方
の穴側の遮断壁部よりも下流側に連通させる第１接続通
路及び他方の穴側の遮断壁部よりも上流側を一方の穴側
の遮断壁部よりも下流側に連通させる第２接続通路が設
けられており、第１及び第２接続通路にそれぞれ通路断
面積を制御可能な弁装置が設けられている請求項１記載
の２軸押出機の混練度調整装置。 ３、１つの流路抵抗調整装置は、混練部の下流側に設け
られている請求項１又は２記載の２軸押出機。 ４、１つの流路抵抗調整装置は、脱気部の下流側に設け
られている請求項１、２又は３記載の２軸押出機。 ５、１つの流路抵抗調整装置は、反応部の下流側に設け
られている請求項１、２、３又は４記載の２軸押出機。[Claims] 1. Two shafts that engage with each other and rotate within the two-axis holes of the barrel.
In a twin-screw extruder equipped with an axial screw, flow path resistance adjustment devices are installed at multiple positions in the axial direction of the barrel, and each flow path resistance adjustment device is placed midway through the flight of the screw. A cylindrical part with a smaller diameter than the outer diameter of the flight and a biaxial hole corresponding to this cylindrical part are arranged in the axial position of the screw and have a smaller diameter than other parts so as to fit into the cylindrical part of the screw with a small gap. a blocking wall portion having an inner diameter portion;
A connecting passage provided in the blocking wall so as to communicate the upstream side of the blocking wall of the shaft hole with the downstream side of the blocking wall of the biaxial hole, and a valve capable of controlling the passage cross-sectional area of the connecting passage. A twin screw extruder comprising: 2. The blocking wall part of the flow path resistance adjusting device is provided over a length corresponding to the entire length of the cylindrical part of the screw, and the blocking wall part is provided with the upstream side of the blocking wall part on one hole side and the other side. A first connection passage that communicates with the downstream side of the blocking wall on the hole side, and a second connection that communicates the upstream side of the blocking wall on the other hole side with the downstream side of the blocking wall on the one hole side. The kneading degree adjusting device for a twin-screw extruder according to claim 1, wherein a passage is provided, and a valve device capable of controlling the cross-sectional area of the passage is provided in each of the first and second connecting passages. 3. The twin-screw extruder according to claim 1 or 2, wherein the one flow path resistance adjusting device is provided downstream of the kneading section. 4. The twin-screw extruder according to claim 1, 2 or 3, wherein the one flow path resistance adjusting device is provided downstream of the degassing section. 5. The twin-screw extruder according to claim 1, 2, 3 or 4, wherein the one flow path resistance adjusting device is provided downstream of the reaction section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1297152A JPH03158220A (en) | 1989-11-15 | 1989-11-15 | Double screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1297152A JPH03158220A (en) | 1989-11-15 | 1989-11-15 | Double screw extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03158220A true JPH03158220A (en) | 1991-07-08 |
| JPH0579217B2 JPH0579217B2 (en) | 1993-11-01 |
Family
ID=17842871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1297152A Granted JPH03158220A (en) | 1989-11-15 | 1989-11-15 | Double screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03158220A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009184303A (en) * | 2008-02-08 | 2009-08-20 | Japan Steel Works Ltd:The | Method and apparatus for separating volatilized component in biaxial screw extruder |
| WO2009088804A3 (en) * | 2008-01-03 | 2009-10-08 | Wenger Manufacturing, Inc. | Extruder having variable mid-barrel restriction and adjacent high intensity mixing assembly |
| WO2009088802A3 (en) * | 2008-01-03 | 2009-10-15 | Wenger Manufacturing, Inc. | Single screw extruder for processing of low viscosity preconditioned materials |
-
1989
- 1989-11-15 JP JP1297152A patent/JPH03158220A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009088804A3 (en) * | 2008-01-03 | 2009-10-08 | Wenger Manufacturing, Inc. | Extruder having variable mid-barrel restriction and adjacent high intensity mixing assembly |
| WO2009088802A3 (en) * | 2008-01-03 | 2009-10-15 | Wenger Manufacturing, Inc. | Single screw extruder for processing of low viscosity preconditioned materials |
| US7635217B2 (en) | 2008-01-03 | 2009-12-22 | Wenger Manufacturing, Inc. | Extruder having variable mid-barrel restriction and adjacent high intensity mixing assembly |
| US8246240B2 (en) | 2008-01-03 | 2012-08-21 | Wenger Manufacturing, Inc. | Single screw extruder for processing of low viscosity preconditioned materials |
| JP2009184303A (en) * | 2008-02-08 | 2009-08-20 | Japan Steel Works Ltd:The | Method and apparatus for separating volatilized component in biaxial screw extruder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0579217B2 (en) | 1993-11-01 |
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