JPH11300737A - Different diameter twin-screw kneading extruder - Google Patents
Different diameter twin-screw kneading extruderInfo
- Publication number
- JPH11300737A JPH11300737A JP10113669A JP11366998A JPH11300737A JP H11300737 A JPH11300737 A JP H11300737A JP 10113669 A JP10113669 A JP 10113669A JP 11366998 A JP11366998 A JP 11366998A JP H11300737 A JPH11300737 A JP H11300737A
- Authority
- JP
- Japan
- Prior art keywords
- kneading
- screw
- cylinder
- tapered portion
- tapered
- 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
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
- B29C48/68—Barrels or cylinders
- B29C48/682—Barrels or cylinders for twin 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
- B29C48/395—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
- B29C48/395—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
- B29C48/41—Intermeshing counter-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
- B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
- B29C48/525—Conical 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、二軸異径の混練押
出機に係るものであり、特に、シリンダの移動に伴う混
練度合（絞り度合）の調節の感度を低下させ、混練度合
が低い範囲の調節幅を広げることができる混練度調整装
置を有する二軸異径の混練押出機に関するものである。
特に、局部発熱をきらう、例えば塩化ビニール樹脂など
に適用される混練度調整装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneading extruder having a twin-screw having different diameters, and in particular, the sensitivity of adjusting a kneading degree (drawing degree) accompanying movement of a cylinder is reduced, and the kneading degree is low. The present invention relates to a kneading extruder having a kneading extruder having a kneading degree adjusting device capable of expanding a range of adjustment of a range.
In particular, the present invention relates to a kneading degree adjusting device applied to, for example, a vinyl chloride resin or the like which does not generate local heat.
【０００２】[0002]
【従来の技術】従来、用いられているこの種の二軸異径
の混練押出機としては、例えば、特公平６−９８１５号
公報に開示されている図５に示す構成を挙げることがで
きる。2. Description of the Related Art A conventional twin screw extruder of this type having a different diameter is, for example, a structure shown in FIG. 5 disclosed in Japanese Patent Publication No. 6-9815.
【０００３】同図において、符号１で示されるものは、
本体２に設けられた油圧シリンダ３によって軸方向に移
動可能に設けられたシリンダである。このシリンダ１
は、ホッパ口２１を有する原料供給部２２、混練部２
３、内壁テーパー部１ｅが形成されている混練度調整部
２４、原料供給部２２や混練部２３より内径を小さくし
た独立した二軸の押出部２５とから構成されている。[0003] In FIG.
This is a cylinder provided to be movable in the axial direction by a hydraulic cylinder 3 provided in the main body 2. This cylinder 1
Is a raw material supply unit 22 having a hopper port 21, a kneading unit 2
3, a kneading degree adjusting section 24 having an inner wall tapered section 1e, and an independent biaxial extruding section 25 having an inner diameter smaller than that of the raw material supply section 22 and the kneading section 23.
【０００４】前記シリンダ１内には、シリンダ１の構成
に対応して、同様に原料供給部２２、混練部２３、テー
パー部７ｃおよび８ｃが形成されている混練度調整部２
４、原料供給部２２や混練部２３より外径を小さくした
押出部２５とから構成される第１スクリュ軸７および第
２スクリュ軸８が互いに歯合した状態で回転自在に配設
されている。各スクリュ軸７および８は、減速機構９と
連結されており、軸方向には固定された状態で設けられ
ている。[0004] In the cylinder 1, a kneading degree adjusting section 2 in which a raw material supply section 22, a kneading section 23, and tapered sections 7c and 8c are similarly formed corresponding to the configuration of the cylinder 1.
4. A first screw shaft 7 and a second screw shaft 8 composed of a raw material supply section 22 and an extruding section 25 having an outer diameter smaller than that of the kneading section 23 are rotatably arranged in a state where they mesh with each other. . Each of the screw shafts 7 and 8 is connected to the speed reduction mechanism 9, and is provided in a state fixed in the axial direction.
【０００５】混練度合を調節する場合は、油圧シリンダ
３を作動してシリンダ１を左右に移動し、シリンダ１の
内壁テーパー部１ｅと、各スクリュ軸７および８のテー
パー部間７ｃおよび８ｃの隙間ｔを調節して行う。図中
左方向にシリンダ１を移動する際、シリンダ１の内壁テ
ーパー部１ｅが各スクリュ軸７および８のテーパー部７
ｃおよび８ｃに接触しないように、シリンダ１の後端
は、前記本体２に形成されたストッパ２ａと当接可能と
されている。シリンダ１の軸方向における移動距離は、
シリンダ１の後端に当接して配設されたダイヤルゲージ
４によって測定され、この測定値を見ながら樹脂原料の
混練度合を調節することができる。To adjust the degree of kneading, the hydraulic cylinder 3 is operated to move the cylinder 1 to the left and right, and the gap between the tapered portion 1e of the inner wall of the cylinder 1 and the tapered portions 7c and 8c of the screw shafts 7 and 8 is set. Adjusting t is performed. When the cylinder 1 is moved to the left in the drawing, the tapered portion 1e of the inner wall of the cylinder 1
The rear end of the cylinder 1 can be brought into contact with a stopper 2a formed on the main body 2 so as not to come into contact with c and 8c. The moving distance in the axial direction of the cylinder 1 is
It is measured by a dial gauge 4 disposed in contact with the rear end of the cylinder 1, and the degree of kneading of the resin raw material can be adjusted while observing the measured value.
【０００６】[0006]
【発明が解決しようとする課題】従来の二軸異径の混練
押出機は、以上のように構成されているため、次のよう
な課題を有していた。The conventional twin-screw extruder having different diameters has the following problems because it is constructed as described above.
【０００７】すなわち、テーパー部の隙間ｔを調節する
ことによって、樹脂原料の流れ抵抗（圧力抵抗）をつけ
るようにしているが、この場合、図６および図７に示さ
れるようにテーパー部７ｃを流れる樹脂原料の圧力損出
の計算式は、簡略的に例えて平面板内を流れるものと考
えると、下記の数式１となる。That is, the flow resistance (pressure resistance) of the resin material is adjusted by adjusting the gap t of the tapered portion. In this case, as shown in FIGS. The formula for calculating the pressure loss of the flowing resin material is as follows, assuming that it flows in a flat plate, for example.
【０００８】[0008]
【数１】ΔＰ＝１２×μ×Ｑ×Ｌ／（Ｗ×ｔ３ ） 但し、ΔＰ＝抵抗値、μ＝樹脂粘度、Ｑ＝樹脂の通過
量、Ｗ＝通過する幅、Ｌ＝通過する長さ、ｔ＝樹脂原料
が通過する隙間 数式１により抵抗値ΔＰは、隙間ｔの３乗で変化するた
め、シリンダ１と各スクリュ軸７および８の関係位置を
正確かつ微細に調節する必要があり、前記テーパー部７
ｃのテーパー角度を小さくし、シリンダ１の大きな移動
量でも隙間ｔの変化が極力小となるように構成されてい
る。しかし、図８に示すように、この隙間ｔとテーパ部
７ｃのテーパー角度θの関係は、ｔ＝ｓｉｎθ×χ（シ
リンダ移動量）で表されるため、限られた二軸間距離で
は、通常１５°以上が限度であった。ΔP = 12 × μ × Q × L / (W × t 3 ) where ΔP = resistance value, μ = resin viscosity, Q = resin passing amount, W = width passing, L = length passing Since t = gap through which the resin raw material passes Since the resistance value ΔP changes by the cube of the gap t according to Equation 1, it is necessary to precisely and finely adjust the relative position between the cylinder 1 and each of the screw shafts 7 and 8. , The tapered portion 7
The taper angle of c is reduced so that the change in the gap t is minimized even when the cylinder 1 moves a large amount. However, as shown in FIG. 8, the relationship between the gap t and the taper angle θ of the tapered portion 7c is represented by t = sin θ × χ (cylinder movement amount). The limit was 15 ° or more.
【０００９】また、塩化ビニール樹脂等の混練度合の低
い樹脂原料では、樹脂温度を上げないために、テーパー
部の隙間を開く必要が生じる。隙間を開くと、シリンダ
とスクリュのテーパー部の重なりが少なくなり、少しの
隙間調整範囲を越えると隙間が一定となり調整が出来な
い。すなわち、狭い隙間調整範囲でしか使用できなかっ
た。Further, in the case of a resin raw material such as a vinyl chloride resin having a low kneading degree, it is necessary to open a gap between the tapered portions so as not to raise the resin temperature. When the gap is opened, the overlap between the cylinder and the tapered portion of the screw is reduced. When the gap is slightly exceeded, the gap becomes constant and adjustment cannot be performed. That is, it can be used only in a narrow gap adjustment range.
【００１０】本発明は、以上のような問題を解決するた
めになされたもので、シリンダの移動に伴う混練度合
（絞り度合）の調節を幅広く容易に行うことができ、特
に、混練度合の低い樹脂原料の混練度合の調節幅を広げ
ることができる二軸異径の混練押出機を提供することを
課題とする。The present invention has been made in order to solve the above-mentioned problems, and it is possible to easily and widely adjust the degree of kneading (degree of throttling) accompanying movement of a cylinder, and in particular, to reduce the degree of kneading. It is an object of the present invention to provide a kneading extruder having a biaxially different diameter, which can increase a range of adjusting a kneading degree of a resin raw material.
【００１１】[0011]
【課題を解決するための手段】本発明では、上記課題を
次のようにして解決した。すなわち、本発明による二軸
異径の混練押出機は、互いに外径が異なるスクリュがテ
ーパー部を介して一体とされている一対のスクリュ軸
と、前記スクリュ軸を回転自在に内蔵し前記テーパー部
に対応する内壁に内壁テーパー部を有するシリンダと、
を有し、前記テーパー部の外周壁に切り欠き溝を設け、
前記テーパー部と内壁テーパー部との隙間を調整するこ
とにより混練度微調整を可能としている。According to the present invention, the above problems have been solved as follows. That is, the twin-screw extruder having different diameters according to the present invention includes a pair of screw shafts in which screws having different outer diameters are integrated via a taper portion, and the screw shaft is rotatably built therein and the taper portion is provided. A cylinder having an inner wall tapered portion on the inner wall corresponding to
Having a notch groove in the outer peripheral wall of the tapered portion,
Fine adjustment of the degree of kneading is possible by adjusting the gap between the tapered portion and the inner wall tapered portion.
【００１２】これにより、テーパー部の圧力損失を下
げ、混練度合の低い樹脂原料の混練度合の調節幅を広げ
ることができる。Thus, the pressure loss at the tapered portion can be reduced, and the range of adjustment of the kneading degree of the resin material having a low kneading degree can be widened.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を実施
例にもとづき図面を参照して説明する。なお、従来例と
同一または同等の部分については同一符号を用いて説明
する。図１〜図４は、本発明による二軸異径の混練押出
機を示すためのものであり、図１は全体構成を示す断面
図、図２は図１の要部を示す拡大断面図、図３は図２の
Ａ−Ａ線断面図、図４はテーパ部の間隔に対するその上
流側の圧力の関係を示す特性図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments with reference to the drawings. Parts that are the same as or equivalent to the conventional example will be described using the same reference numerals. 1 to 4 are for showing a kneading extruder having a biaxial different diameter according to the present invention, FIG. 1 is a cross-sectional view showing an entire configuration, FIG. 2 is an enlarged cross-sectional view showing a main part of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, and FIG. 4 is a characteristic diagram showing a relationship between the interval between the tapered portions and the pressure on the upstream side thereof.
【００１４】図１〜図３において、符号１で示されるも
のは、本体２に設けられた油圧シリンダ３によって軸方
向に移動可能に設けられたシリンダであり、このシリン
ダ１内には、２個の軸穴からなる大径の第１軸穴１ａお
よび壁１ｆによって仕切られた２個の小径の軸穴からな
る一対の第２軸穴１ｂおよび１ｃが連続して形成されて
いる。In FIG. 1 to FIG. 3, a cylinder denoted by reference numeral 1 is a cylinder provided so as to be movable in the axial direction by a hydraulic cylinder 3 provided on a main body 2. A pair of second shaft holes 1b and 1c formed of two large-diameter shaft holes 1a and two small-diameter shaft holes separated by a wall 1f are formed continuously.
【００１５】前記シリンダ１の後端１ｄは、前記本体２
に形成されたストッパ部２ａと当接可能に構成され、こ
のシリンダ１の軸方向における移動距離は、前記後端１
ｄに当接して配設されたダイヤルゲージ４によって測定
される。The rear end 1d of the cylinder 1 is
The cylinder 1 is configured so as to be able to contact with a stopper portion 2a formed on the rear end.
It is measured by the dial gauge 4 disposed in contact with d.
【００１６】前記軸穴１ａ〜１ｃ内には、互いに外径が
異なる第１スクリュ部５および第２スクリュ部６を一体
に有する一対の第１スクリュ軸７および第２スクリュ軸
８が互いに歯合した状態で回転自在に配設されており、
各スクリュ軸７および８は、減速機構９と連結軸１０を
介して接続されており、軸方向には固定された状態で設
けられている。In the shaft holes 1a to 1c, a pair of a first screw shaft 7 and a second screw shaft 8 integrally having a first screw portion 5 and a second screw portion 6 having different outer diameters mesh with each other. It is arranged rotatably in the state that
Each of the screw shafts 7 and 8 is connected to a speed reduction mechanism 9 via a connection shaft 10, and is provided fixed in the axial direction.
【００１７】前記各第１スクリュ部５は、リードの小さ
いフライトで形成された原料供給部７ａおよび８ａと、
リードの大きいフライトで形成された混練部７ｂおよび
８ｂとから構成されると共に、前記各スクリュ軸７およ
び８における各スクリュ部５および６間には、外径が変
化する位置の異径部を構成するテーパ部７ｃおよび８ｃ
が形成されている。Each of the first screw sections 5 has a material supply section 7a and 8a formed by a flight with a small lead,
Kneading portions 7b and 8b formed by a flight with a large lead are provided, and between the screw portions 5 and 6 of the screw shafts 7 and 8, a different diameter portion at a position where the outer diameter changes is formed. Tapered portions 7c and 8c
Are formed.
【００１８】前記シリンダ１における前記テーパー部７
ｃおよび８ｃに対応する各軸穴１ｂおよび１ｃの内壁位
置には内壁テーパ部１ｅが形成され、これらの各テーパ
部７ｃおよび８ｃと前記内壁テーパ部１ｅとの間には間
隙ｔが形成されている。The tapered portion 7 of the cylinder 1
An inner wall tapered portion 1e is formed at the inner wall position of each of the shaft holes 1b and 1c corresponding to c and 8c, and a gap t is formed between each of the tapered portions 7c and 8c and the inner wall tapered portion 1e. I have.
【００１９】さらに、前記テーパー部７ｃおよび８ｃの
外周壁には、図２および図３に示すように幅Ｗ、深さ
ｈ、長さＬの複数本の切り欠き溝１２が形成されてい
る。この切り欠き溝１２は、その上流側の圧力損失を下
げることができれば、どのような形でもよく、スクリュ
軸に平行またはスクリュ軸の回転方向に対して樹脂原料
を送る方向もしくは戻す方向でもよい。この切り欠き溝
１２の圧力損失も従来の技術の欄で述べた平行平板の式
で計算される。なお、前記切り欠き溝の溝深さｈはスク
リュ軸７および８の外径の０．５〜１０％、溝幅ｗは１
ｍｍ以上、溝の数は２本以上とする。Further, a plurality of notched grooves 12 having a width W, a depth h and a length L are formed on the outer peripheral walls of the tapered portions 7c and 8c as shown in FIGS. The notch groove 12 may have any shape as long as the pressure loss on the upstream side can be reduced, and may be a direction parallel to the screw shaft or a direction in which the resin material is fed or returned with respect to the rotation direction of the screw shaft. The pressure loss of the notch groove 12 is also calculated by the parallel plate formula described in the section of the prior art. The notch groove has a groove depth h of 0.5 to 10% of the outer diameter of the screw shafts 7 and 8 and a groove width w of 1.
mm or more, and the number of grooves is two or more.
【００２０】次に、上述した二軸異径の混練押出機の動
作について説明する。まず、減速機構９の駆動により、
各スクリュ軸７および８が互いに噛合した状態で、所定
の回転数に基づいて回転する状況下において、シリンダ
内の原料供給部７ａおよび８ａに樹脂原料が供給される
と、混練部７ｂおよび８ｂによって混練され、隙間ｔを
経て各第２スクリュ部６および各軸穴１ｂおよび１ｃに
よって構成される押出部１１を経て外部に押出される。Next, the operation of the above-described kneading extruder having a different twin-screw diameter will be described. First, by driving the reduction mechanism 9,
When the resin material is supplied to the raw material supply units 7a and 8a in the cylinder under a condition where the screw shafts 7 and 8 are engaged with each other and rotated at a predetermined rotation speed, the kneading units 7b and 8b It is kneaded and extruded to the outside via an extruding section 11 formed by each second screw section 6 and each of the shaft holes 1b and 1c through a gap t.
【００２１】このような状態において、混練部７ｂおよ
び８ｂにおける樹脂原料の混練度合の調節は、油圧シリ
ンダ３によってシリンダ１を軸方向に移動し、隙間ｔの
大きさを変化させることによつて任意に行うことができ
る。In such a state, the degree of kneading of the resin material in the kneading sections 7b and 8b can be adjusted by moving the cylinder 1 in the axial direction by the hydraulic cylinder 3 and changing the size of the gap t. Can be done.
【００２２】本発明においては、各スクリュ軸７および
８のテーパー部７ｃおよび８ｃには、複数本の切り欠き
溝１２が形成されているので、テーパー部７ｃおよび８
ｃと切り欠き溝１２に対する、前記シリンダ１の内壁テ
ーパ部１ｅの隙間を流れる樹脂抵抗は、前記加算した隙
間の３乗で効く。そこで、樹脂原料の種類に応じて最適
な樹脂抵抗が得られるように切り欠き溝１２の形状とそ
の方向を選択する。In the present invention, since a plurality of notched grooves 12 are formed in the tapered portions 7c and 8c of the screw shafts 7 and 8, the tapered portions 7c and 8 are formed.
The resin resistance flowing through the gap between the inner wall tapered portion 1e of the cylinder 1 with respect to c and the notch groove 12 is effective by the cube of the added gap. Therefore, the shape and the direction of the cutout groove 12 are selected so as to obtain the optimum resin resistance according to the type of the resin raw material.
【００２３】図４は、テーパー部の隙間に対するその上
流側の圧力変化について従来構成と本発明構成における
変化の度合いを示す特性図である。FIG. 4 is a characteristic diagram showing the degree of change of the pressure change on the upstream side with respect to the gap of the tapered portion between the conventional structure and the present invention.
【００２４】例えば、図４に示すように、テーパー部の
上流側の圧力を、３０〜５０ｋｇ／ｃｍ２にコントロー
ルするテーパー部の隙間ｔは、従来のテーパ部を有する
曲線Ｂでは、１４．５ｍｍであったが、本発明によるテ
ーパ部に切り欠き溝１２を有する曲線Ａでは、２２．５
ｍｍとなり微調整が可能となる。そのため、シリンダの
移動操作は、従来のようにきつい精度を要求されるもの
ではなく、ラフな機構によりシリンダを移動させること
により、任意の混練度を容易に得ることができる。For example, as shown in FIG. 4, the gap t of the tapered portion for controlling the pressure on the upstream side of the tapered portion to 30 to 50 kg / cm 2 is 14.5 mm in the curve B having the conventional tapered portion. However, in the curve A having the notch groove 12 in the tapered portion according to the present invention, 22.5
mm and fine adjustment is possible. Therefore, the cylinder moving operation does not require tight precision as in the related art, and an arbitrary kneading degree can be easily obtained by moving the cylinder by a rough mechanism.
【００２５】なお、この場合の本発明によるスクリュ軸
のテーパー部の各部寸法（図２および図３参照）は、次
の通りである。The dimensions (see FIGS. 2 and 3) of the tapered portion of the screw shaft according to the present invention in this case are as follows.
【００２６】 テーパー部外径（ｄ）：１００ｍｍ 溝深さ（ｈ） ：３ｍｍ 溝幅（ｗ） ：１５ｍｍ 溝数 ：８個Outer diameter of taper portion (d): 100 mm Groove depth (h): 3 mm Groove width (w): 15 mm Number of grooves: 8
【００２７】[0027]
【発明の効果】本発明による二軸異径の混練押出機は、
以上のように構成されているため、次のような効果を得
ることができる。The kneading extruder of the twin-screw different diameter according to the present invention comprises:
With the above configuration, the following effects can be obtained.
【００２８】すなわち、従来のテーパー部を用いた隙間
の構成に加えて、スクリュ軸のテーパー部の外周壁に切
り欠き溝を形成したため、混練度合の低い樹脂原料の混
練度合の調節幅を広げることができる。That is, in addition to the conventional configuration of the gap using the tapered portion, a notch groove is formed in the outer peripheral wall of the tapered portion of the screw shaft, so that the range of adjustment of the mixing degree of the resin material having a low mixing degree can be increased. Can be.
【図１】本発明による二軸異径の混練押出機の全体構成
を示す断面図である。FIG. 1 is a cross-sectional view showing the overall configuration of a kneading extruder having a twin screw with different diameters according to the present invention.
【図２】図１の要部を示す拡大断面図である。FIG. 2 is an enlarged sectional view showing a main part of FIG.
【図３】図２のＡ−Ａ線断面図である。FIG. 3 is a sectional view taken along line AA of FIG. 2;
【図４】テーパー部の隙間に対するその上流側の圧力変
化について従来構成と本発明構成における変化の度合い
を示す特性図である。FIG. 4 is a characteristic diagram showing a degree of change in a pressure change on the upstream side with respect to a gap of a tapered portion between the conventional configuration and the present invention configuration.
【図５】従来の二軸異径の混練押出機の全体構成を示す
断面図である。FIG. 5 is a cross-sectional view showing the entire structure of a conventional twin-screw extruder having a different diameter.
【図６】テーパー部の圧力損失を説明するための図であ
る。FIG. 6 is a diagram for explaining a pressure loss of a tapered portion.
【図７】テーパー部の圧力損失を説明するための図であ
る。FIG. 7 is a diagram for explaining a pressure loss of a tapered portion.
【図８】テーパー部の隙間の変化を説明するための図で
ある。FIG. 8 is a diagram for explaining a change in a gap of a tapered portion.
１ シリンダ １ａ 第１軸穴 １ｂ、１ｃ 第２軸穴 １ｄ 後端 １ｅ 内壁テーパー部 １ｆ 壁 ２ 本体 ２ａ ストッパ部 ３ 油圧シリンダ ４ ダイヤルゲージ ５ 第１スクリュ部 ６ 第２スクリュ部 ７ 第１スクリュ軸 ７ａ、８ａ 原料供給部 ７ｂ、８ｂ 混練部 ７ｃ、８ｃ テーパー部 ８ 第２スクリュ軸 ９ 減速機構 １０ 連結軸 １１ 押出部 １２ 切り欠き溝 DESCRIPTION OF SYMBOLS 1 Cylinder 1a 1st shaft hole 1b, 1c 2nd shaft hole 1d Rear end 1e Inner wall taper part 1f Wall 2 Main body 2a Stopper part 3 Hydraulic cylinder 4 Dial gauge 5 First screw part 6 Second screw part 7 First screw shaft 7a , 8a Material supply section 7b, 8b Kneading section 7c, 8c Taper section 8 Second screw shaft 9 Reduction mechanism 10 Connecting shaft 11 Extruding section 12 Notch groove
Claims (2)
部（７ｃ，８ｃ）を介して一体とされている一対のスク
リュ軸（７，８）と、前記スクリュ軸（７，８）を回転
自在に内蔵し前記テーパー部（７ｃ，８ｃ）に対応する
内壁に内壁テーパー部（１ｅ）を有するシリンダ（１）
と、を有する二軸異径の混練押出機において、 前記テーパー部（７ｃ，８ｃ）の外周壁に切り欠き溝
（１２）を設け、前記テーパー部（７ｃ，８ｃ）と内壁
テーパー部（１ｅ）との隙間（ｔ）を調整することによ
り混練度微調整を可能とすることを特徴とする二軸異径
の混練押出機。1. A pair of screw shafts (7, 8) in which screws having different outer diameters are integrated via tapered portions (7c, 8c), and said screw shafts (7, 8) are rotatable. Cylinder (1) which has a built-in tapered portion (1e) on the inner wall corresponding to the tapered portions (7c, 8c).
And a kneading extruder having different diameters, wherein a notch groove (12) is provided on the outer peripheral wall of the tapered portion (7c, 8c), and the tapered portion (7c, 8c) and the inner wall tapered portion (1e) are provided. A kneading extruder of different diameters, wherein the kneading degree can be finely adjusted by adjusting the gap (t) with the extruder.
はスクリュ軸（７，８）の外径の０．５〜１０％、溝幅
（ｗ）は１ｍｍ以上、溝の数は２本以上とすることを特
徴とすると請求項１記載の二軸異径の混練押出機。2. A groove depth (h) of the notch groove (12).
2. The biaxial shaft according to claim 1, wherein 0.5 to 10% of the outer diameter of the screw shaft (7, 8), the groove width (w) is 1 mm or more, and the number of grooves is 2 or more. Diameter kneading extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10113669A JPH11300737A (en) | 1998-04-23 | 1998-04-23 | Different diameter twin-screw kneading extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10113669A JPH11300737A (en) | 1998-04-23 | 1998-04-23 | Different diameter twin-screw kneading extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11300737A true JPH11300737A (en) | 1999-11-02 |
Family
ID=14618169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10113669A Pending JPH11300737A (en) | 1998-04-23 | 1998-04-23 | Different diameter twin-screw kneading extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11300737A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009148936A (en) * | 2007-12-19 | 2009-07-09 | Kobe Steel Ltd | Kneading screw and extruder |
| US20170062797A1 (en) * | 2015-08-28 | 2017-03-02 | Toyota Jidosha Kabushiki Kaisha | Kneader and manufacturing method of electrode body including electrode active material using the same |
-
1998
- 1998-04-23 JP JP10113669A patent/JPH11300737A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009148936A (en) * | 2007-12-19 | 2009-07-09 | Kobe Steel Ltd | Kneading screw and extruder |
| US8167478B2 (en) | 2007-12-19 | 2012-05-01 | Kobe Steel, Ltd. | Kneading screw and extruder |
| US20170062797A1 (en) * | 2015-08-28 | 2017-03-02 | Toyota Jidosha Kabushiki Kaisha | Kneader and manufacturing method of electrode body including electrode active material using the same |
| CN106474967A (en) * | 2015-08-28 | 2017-03-08 | 丰田自动车株式会社 | Kneader and the manufacture method of the electrode body comprising electrode active material using it |
| CN106474967B (en) * | 2015-08-28 | 2019-05-14 | 丰田自动车株式会社 | The manufacturing method of kneader and the electrode body comprising electrode active material using it |
| US10497926B2 (en) | 2015-08-28 | 2019-12-03 | Toyota Jidosha Kabushiki Kaisha | Kneader and manufacturing method of electrode body including electrode active material using the same |
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