JPH01249320A - Counter type double-screw extruding machine - Google Patents

Counter type double-screw extruding machine

Info

Publication number
JPH01249320A
JPH01249320A JP63077729A JP7772988A JPH01249320A JP H01249320 A JPH01249320 A JP H01249320A JP 63077729 A JP63077729 A JP 63077729A JP 7772988 A JP7772988 A JP 7772988A JP H01249320 A JPH01249320 A JP H01249320A
Authority
JP
Japan
Prior art keywords
extrusion
die
screw
chamber
barrels
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
JP63077729A
Other languages
Japanese (ja)
Inventor
Kiyohiko Sawa
沢 清彦
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP63077729A priority Critical patent/JPH01249320A/en
Publication of JPH01249320A publication Critical patent/JPH01249320A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means 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
    • B29C48/455Screws arranged to convey material towards each other, e.g. separate screws arranged after each other and feeding in opposite directions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To make a thrust bearing unnecessary and simplify a shaft supporting structure without generating contact between the inside of a barrel and screw shaft body, by a method wherein a pair of extruding screw shaft body sets are loaded into extruding barrels connecting on both sides of an axial direction by placing a die chamber between them in a state facing on each other, each end of both the shaft body sets is supported axially and turnably respectively and each of the other ends is integrated within the die chamber. CONSTITUTION:A pair of extruding barrels 2, 3 of the same form and the same size are fitted attachably and detachably to a die chamber 1, slidably in an axial direction, and conccentrically in a communicating state on both sides of an axial direction by placing the chamber 1 where an extruding die is provided in a radial direction between the extruding barrels 2, 3. Then hoppers 6, 7 receiving a supply material from a material supply devices 4, 5 are provided along with loading ports 8, 9 and material supply to the barrels 2, 3 is made possible synchronously. Then pairs of the screw shaft body sets are loaded respectively into the barrels 2, 3 concentrically and in a state of facing on each other, each end of the screw shafts on an anti-die- chamber side is supported axially and turnably respectively by each bearing of the bearing casings 12, 13 and each of the other ends of the screws joins the other ends integrally to each other within the chamber 1.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、食品、樹脂材料等の押出成形に用いる2軸ス
クリュ押出機の改善に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a twin screw extruder used for extrusion molding of foods, resin materials, etc.

(従来の技術) 各種食品材料、合成樹脂材料等の押出成形を行なう2軸
スクリュ押出機はいうまでもなく周知のものであり、第
6図および第7図についてその典型的な1例を説示する
。即ちかかる2軸スクリュ押出機は、一対の平行に並列
されるスクリュ軸による2軸スクリユ101.2軸スク
リユ101が片持支持の状態で可回動に内装される押出
用バレル102、同バレルの軸方向一端に付設されるダ
イヘッド103、前記2軸スクリユ101を同期回動さ
せるだめの駆動装置104、前記押出用バレル102内
に原材料を供給するための供給装置105を主要な構成
要素とするものである。2軸スクリユ101 は既知の
ように押出用バレル102における略双円形断面のキャ
ビティ内に一対のスクリュ軸体101aおよび101b
が平行に並列されて可回動に装入されるものであり、両
輪体101a、 101bにおける各スクリュ101c
、 101cには噛合型と非噛合型の両タイプがあるこ
とも既知である。これら両軸体101aおよび101b
の支持に当っては、図示のように架構106上に定置さ
れた駆動装置104に、各軸−端側がラジアル軸受10
4−1により可回動に軸支され、バレル102内ではフ
リーの状態とされる片持支持であるとともに、バレル1
02内における材料移送時に生じる反力およびグイヘッ
ド103部分の圧力によって生じるスラスト力を、軸端
を支持するスラスト軸受104−2によって支持するよ
うにしている。このさい前記スラスト軸受104−2は
スクリュ径により軸間距離が決まるため、軸受外径に制
限を受け、しかも可成り大きな負荷容量を必要とするた
め、小径多段形の特殊ベアリングを用いることが通例で
ある。駆動装置104内には減速機108の出力軸10
9が軸架され、該出力軸109の駆動ギヤ110が、前
記スクリュ軸体101aおよびスクリュ軸体101bに
相噛合状に付設される従動ギヤ111の何れかに噛合さ
れることにより、両スクリュ軸体101a、 101b
の周方向または異方向の回転が行われる。また減速機1
08には図示のように、原動[112から伝動部材1人
3をへて原動力が入力される。また材料供給装置105
の給送部材105aと対応して、押出用バレル102に
おけるフィードバレル102−1の周側にはホッパ11
4、投入口115が設けられるとともに、バレル102
全体に架構106内に軸方向進退可能に内装されたスラ
イドフレーム107に取付けられ、例えば操作ハンドル
116の正逆回動操作によって、第6図向って右側の前
方へ引出し可能とされている。これは機内の清掃やスク
リュエレメントの組換え等の作業を、相当な作業頻度の
下に行なう必要に応じるためである。
(Prior Art) Twin-screw extruders for extrusion molding of various food materials, synthetic resin materials, etc. are, needless to say, well-known, and a typical example is illustrated in FIGS. 6 and 7. do. That is, such a twin-screw extruder includes a twin-screw 101 formed by a pair of parallel screw shafts, an extrusion barrel 102 in which the twin-screw 101 is rotatably housed in a state of cantilever support, and a barrel for extrusion. The main components are a die head 103 attached to one end in the axial direction, a drive device 104 for synchronously rotating the two-shaft screw 101, and a supply device 105 for feeding raw materials into the extrusion barrel 102. It is. As is known, the twin-screw screw 101 has a pair of screw shafts 101a and 101b in a cavity with a substantially bicircular cross section in an extrusion barrel 102.
are arranged in parallel and rotatably inserted, and each screw 101c in both wheels 101a, 101b
, 101c is also known to exist in both interlocking and non-meshing types. These two shaft bodies 101a and 101b
As shown in the figure, each shaft end is provided with a radial bearing 10 on a drive device 104 fixed on a frame 106.
The barrel 102 is pivotably supported by the barrel 102, and is cantilevered in a free state within the barrel 102.
The thrust bearing 104-2, which supports the shaft end, supports the thrust force generated by the reaction force generated during material transfer in the shaft 02 and the pressure of the gouging head 103 portion. At this time, the thrust bearing 104-2 is limited by the outer diameter of the bearing because the distance between the shafts is determined by the screw diameter, and requires a fairly large load capacity, so it is customary to use a special small-diameter multi-stage bearing. It is. Inside the drive device 104 is an output shaft 10 of a reducer 108.
9 is mounted on a shaft, and the drive gear 110 of the output shaft 109 is meshed with one of the driven gears 111 attached to the screw shaft body 101a and the screw shaft body 101b in an interlocking manner. Body 101a, 101b
Rotation in the circumferential direction or in the opposite direction is performed. Also, reducer 1
08, as shown in the figure, the motive power is inputted from the motive power [112] through the transmission member 3. Also, the material supply device 105
A hopper 11 is provided on the circumferential side of the feed barrel 102-1 in the extrusion barrel 102, corresponding to the feeding member 105a.
4. The input port 115 is provided, and the barrel 102
The whole is attached to a slide frame 107 that is housed within a frame 106 so as to be movable in the axial direction, and can be pulled out to the front on the right side in FIG. 6, for example, by rotating the operating handle 116 forward and backward. This is to meet the need to perform operations such as cleaning the inside of the machine and recombining screw elements at a considerable frequency.

従って材料供給装置105から給送部材105aおよび
ホッパ114、投入口115をへて、フィードバレル1
02−1内に所要の材料を連続定量供給すれば、供給さ
れた材料は一対のスクリュ軸体101a、 101bの
スクリュ101cの回転により前方へ移送され、既知の
ようにその外周面に所要の加熱または冷却のための熱処
理源117の設けられた加熱または冷却バレル102−
2において、加工条件に合わせたスクリュ101cによ
る撹拌、剪断等の機械的処理と加熱また冷却による熱的
処理を受けることになる。
Therefore, from the material supply device 105, the feed barrel 1
When a required amount of material is continuously supplied into 02-1, the supplied material is transferred forward by the rotation of the screw 101c of the pair of screw shaft bodies 101a and 101b, and as is known, the supplied material is heated to the required amount on its outer peripheral surface. or a heating or cooling barrel 102- provided with a heat treatment source 117 for cooling;
In step 2, the material is subjected to mechanical processing such as stirring and shearing using the screw 101c and thermal processing such as heating and cooling in accordance with the processing conditions.

処理を受けた材料はバレル102の前端に付設されたグ
イヘッド103に設けられる押出グイ118より押出成
形されることになる。尚第6図において示した119は
前記押出ダイ118の前面に可回動に配設される切断カ
ッタであり、該切断カッタ119により押出ダイ118
から連続棒状に押出される材料を切断してペレット状成
形品を得るためのものであり、120は遮閉カバーを示
している。
The treated material is extruded from an extrusion gouer 118 provided in a gouer head 103 attached to the front end of the barrel 102. Reference numeral 119 shown in FIG. 6 is a cutting cutter rotatably disposed on the front surface of the extrusion die 118.
This is for obtaining a pellet-shaped molded product by cutting a material extruded into a continuous rod shape from a continuous bar, and 120 indicates a closing cover.

(発明が解決しようとする課題) 上記した2軸スクリュ押出機における最大の問題点は、
2軸スクリユ101を構成する一対のスクリュ軸体10
1aおよび101bが何れも片持支持構造を余儀なくさ
れる点にある。即ち非支持側であるスクリュ軸体のフリ
ーな各先端部と、これと対応するバレル内面との間に接
触が生じ、スクリュやバレルの損耗が生じ、処理材料へ
の異物混入の原因となるのであり、食品材料の場合には
大きな欠陥であり、また高圧縮タイプの押出機において
は、特にスラスト力が大きくなり、このため片持支持の
さいに必至とされるスラストベアリングの設計は更にそ
の困難性を増大するのである。更にはスラストヘアリン
グ設置のため、回転用ギヤ系列を格納する駆動装置4と
減速N108とは図示のように別置構造となり、このこ
とはスクリュ押出機全長を余分に長くすることになる不
利もある。
(Problem to be solved by the invention) The biggest problem with the above-mentioned twin screw extruder is that
A pair of screw shafts 10 forming a two-shaft screw 101
Both 1a and 101b are forced to have a cantilever support structure. In other words, contact occurs between each free tip of the screw shaft on the non-supporting side and the corresponding inner surface of the barrel, causing wear and tear on the screw and barrel, and causing foreign matter to enter the processed material. This is a major drawback in the case of food materials, and in high-compression type extruders, the thrust force is particularly large, making it even more difficult to design thrust bearings that are necessary for cantilever support. It increases sexuality. Furthermore, because the thrust hair ring is installed, the drive device 4 that houses the rotating gear train and the reduction gear N108 are constructed separately as shown in the figure, which has the disadvantage of making the overall length of the screw extruder extra long. be.

く課題を解決するための手段) 本発明は上記の問題点を解決するために、かかる2軸ス
クリュ押出機において、押出機全長の中央部に押出ダイ
を有するダイチャンバを配置し、ダイチャンバの左右両
側に一対の押出用バレルを対向状に取付け、各押出用バ
レルにそれぞれ一対の押出スクリュ軸体組を同心かつ対
向状に内装し、両スクリュ軸体組における2軸の各一端
を可回動に軸支するとともに、互いに対向する2軸の各
他端を前記ダイチャンバ内で一体に接結することによっ
て、かつこの一体化された両押出スクリエ軸体411の
何れかに回転用駆動手段を連結し、また両押出スクリュ
軸体組における各スクリュを互いに逆方向とすることに
より、両端支持形式の2軸スクリュ押出機の実現を可能
としたもので、具体的には、ラジアル方向に押出ダイを
設けるダイチャンバと、該ダイチャンバを挟んで軸方向
左右に同心連通状に取付けられるとともに軸方向スライ
ド可能に保持され、それぞれ材料供給手段を具備した一
対の押出用バレルと、該両バレル内に同心かつ対向状に
装入され、かつそれぞれ反ダイチャンバ側の2軸各一端
は可回動に軸支され、ダイチャンバ側の2軸各他端は該
チャンバ内において互いに連結一体化するとともに、そ
れぞれのねじ方向は互いに逆方向とした各一対の押出ス
クリュ軸体組と、何れか一方の押出スクリュ軸体組に連
結される回転用駆動手段とから構成することにあり、ま
た前記ダイチャンバの押出ダイを囲んで可回動兼揺動可
能に配設される切断部材と開閉可能な遮閉カバーとから
成る押出材料切断手段を設けることにあり、また前記非
駆動側の押出スクリュ軸体における反ダイチャンバ側の
各軸一端が、テーパスリーブ嵌合手段を介して支持軸受
側に分離可能に保持されることにある。
In order to solve the above-mentioned problems, the present invention disposes a die chamber having an extrusion die in the center of the entire length of the extruder in such a twin-screw extruder. A pair of extrusion barrels are mounted facing each other, and each extrusion barrel is equipped with a pair of extrusion screw shaft assemblies concentrically and facing each other, and one end of each of the two shafts in both screw shaft assemblies is rotatable. The other ends of the two shafts that are supported and are opposed to each other are integrally connected in the die chamber, and a rotational driving means is connected to either of the two integrated extrusion screw shafts 411. In addition, by setting the screws in the double extrusion screw shaft assembly in opposite directions, it is possible to realize a twin screw extruder with support at both ends.Specifically, the extrusion die is provided in the radial direction. A die chamber, a pair of extrusion barrels that are installed concentrically in communication with each other on the left and right sides in the axial direction with the die chamber in between, are held so as to be slidable in the axial direction, and are each equipped with a material supply means; and one end of each of the two shafts on the side opposite to the die chamber is rotatably supported, and the other ends of the two shafts on the side of the die chamber are interconnected and integrated in the chamber, and the screw directions of the two shafts are aligned with each other. It is composed of a pair of extrusion screw shaft sets having opposite directions, and a rotation driving means connected to either one of the extrusion screw shaft sets, and is rotatable around the extrusion die of the die chamber. The present invention is to provide an extruded material cutting means consisting of a cutting member disposed movably and swingably and a closing cover that can be opened and closed, and one end of each shaft on the side opposite to the die chamber of the extrusion screw shaft on the non-driving side. is separably held on the support bearing side via the tapered sleeve fitting means.

(作  用) 本発明の上記した技術的手段によれば、第1図に本発明
に係る対向形2軸スクリュ押出機の組立外観を示すよう
に、押出機全長の中央位置に押出ダイをラジアル方向に
設けたダイチャンバ1を配置するとともに、該ダイチャ
ンバ1を挾んで軸方向左右に同形同大の一対の押出用バ
レル2,3を、それぞれ該チャンバ1に着脱可能である
とともに軸方向にスライド可能であるように、かつ同心
連通状に取付けることによって、ダイチャンバ1が中央
位置にある一連の押出用バレル2,3が形成されるので
あり、また両バレル2,3における反ダイチャンバ側の
各一端にそれぞれ材料供給装置4および5からの供給材
料を受取るホッパ6.7を投入口8,9とともにバレル
周側に設けることにより、一連の押出用バレル2,3に
対する材料供給が同期的に可能となる。これら両バレル
2,3内に装入される2軸スクリユとして、本発明では
第2図に示すように、それぞれ各一対の押出スクリュ軸
体組10、11を同心対向状に装入し、両押用スクリュ
軸体MiI0.11における反ダイチャンバ側の各スク
リュ軸一端は、バレル2,3の各一端に設ける軸受ケー
シング12.13の各軸受14.14および軸受15.
15にそれぞれ可回動に軸支させ、また両押出スクリュ
軸体組10.11におけるダイチャンバ側の各スクリュ
軸他端は、ダイチャンバl内において各同心に対向する
他端同志を継手部16等により一体に接結することによ
り、一連の押出用バレル2,3に亘ってかつダイチャン
バ1を貫通する一連の2軸スクリユが両端軸支構造下に
可回動に保持されることになる。このさい両押出スクリ
ュ軸体組10.11におけるスクリュのねじ方向は、第
2図に示すように互いに逆方向とされるのであり、一方
の押出スクリュ軸体組10における2本のスクリュ軸体
の、前記軸受14.14によって可回動に軸支された各
軸一端に回転用駆動装置17における2本の出力軸18
゜18を継手部19.19等により連結したので、両押
出スクリュ軸体組10.11は一連に回転されることに
なる。従って両押用スクリュ軸体!10.11の回転と
ともに、両材料供給装置4,5から各ホッパ6゜8及び
投入ロア、9を介して、両バレル2,3内に各等量の材
料を連続的に供給すれば、ねじ方向を互いに逆方向とし
た押出スクリュ軸体Mi10.11の回転を介し、バレ
ル2,3内の各材料は、従来と同様にスクリュによる剪
断、混練、圧縮等の機械的処理および両バレル外周に配
置される加熱または冷却源による熱処理を併せて受けつ
つ、何れも中央のダイチャンバ1に向かって移送され、
ダイチャンバl内で両材料は合流して、該チャンバ1に
設けられたラジアル方向の押出ダイ20より押出成形さ
れ、従来の片持支持による2軸スクリユ押出典と相違し
、両持支持による対向形2軸スクリュ押出接が実現可能
であり、片持支持タイプにおいて生じる問題点を解決す
ることができる。このさい前記押出用バレル2,3は第
1図および第4図に示すように、架構21に対応するバ
レルそれぞれに設け、個別または連結してスライド可能
なスライドフレーム22.22に設置することにより、
従来と同様にバレル内の清掃や2軸スクリユにおけるス
クリュエレメントの組換作業等に当り、バレル2,3の
引出しが可能である。
(Function) According to the above-mentioned technical means of the present invention, as shown in FIG. 1, which shows the assembled appearance of the opposed twin screw extruder according to the present invention, an extrusion die is installed radially at the center position of the entire length of the extruder. A die chamber 1 is disposed in the direction, and a pair of extrusion barrels 2 and 3 of the same shape and size are placed on the left and right sides of the die chamber 1 in the axial direction, and are removable from the chamber 1 and slide in the axial direction. By mounting them in concentric and concentric communication, a series of extrusion barrels 2, 3 is formed, with the die chamber 1 in the central position, and one end of both barrels 2, 3 facing away from the die chamber. By providing hoppers 6 and 7 on the barrel circumferential side together with input ports 8 and 9 for receiving materials from the material supply devices 4 and 5, respectively, it is possible to synchronously supply materials to a series of extrusion barrels 2 and 3. Become. In the present invention, as shown in FIG. 2, a pair of extrusion screw shaft assemblies 10 and 11 are inserted concentrically and oppositely in the two barrels 2 and 3. One end of each screw shaft on the side opposite to the die chamber in the pushing screw shaft body MiI0.11 is connected to each bearing 14.14 and bearing 15.
15, and the other end of each screw shaft on the die chamber side in the double extrusion screw shaft assembly 10.11 is connected to the other end of each concentrically opposing end in the die chamber 1 by a joint portion 16 or the like. By connecting them together, a series of two-shaft screws extending over the series of extrusion barrels 2 and 3 and penetrating the die chamber 1 are rotatably held under the shaft support structure at both ends. At this time, the thread directions of the screws in both extrusion screw shaft sets 10 and 11 are opposite to each other as shown in FIG. , two output shafts 18 of the rotary drive 17 at one end of each shaft rotatably supported by the bearings 14,14.
18 are connected by joint portions 19, 19, etc., so that both extrusion screw shaft sets 10, 11 are rotated in series. Therefore, the screw shaft for double pressing! 10. With the rotation of 11, if equal amounts of materials are continuously supplied into both barrels 2 and 3 from both material supply devices 4 and 5 via each hopper 6° 8 and input lower 9, the screw Through the rotation of the extrusion screw shafts Mi10.11 whose directions are opposite to each other, each material in the barrels 2 and 3 is subjected to mechanical processing such as shearing, kneading, and compression by the screws and to the outer periphery of both barrels, as in the past. Both are transferred toward the central die chamber 1 while being subjected to heat treatment by a heating or cooling source arranged,
Both materials meet in the die chamber 1 and are extruded from a radial extrusion die 20 provided in the chamber 1. Unlike the conventional twin-screw extruder with cantilever support, the two materials are extruded from the extrusion die 20 in the radial direction. A twin screw extrusion connection is possible, and the problems that occur with the cantilever support type can be solved. At this time, as shown in FIGS. 1 and 4, the extrusion barrels 2 and 3 are provided in the barrels corresponding to the frame 21, respectively, and installed on slide frames 22 and 22 that can be slid individually or in conjunction. ,
As in the conventional case, the barrels 2 and 3 can be pulled out for cleaning the inside of the barrel or for recombining the screw elements in a two-screw screw.

また本発明においては、第2図および第3図に示すよう
に、前記ダイチャンバ1におけるラジアル方向に設けら
れた押出ダイ20を囲んで可回動であるとともに、ダイ
チャンバ1と接離できるように揺動可能に設けた切断部
材23と、切断位置にある切断部材23を包囲し、かつ
開閉可能である遮閉カバー24とによる押出材料切断装
置25を設けることによって、ラジアル方向の各押出ダ
イ20から連続的に押出されてくる棒状押出材料をペレ
ット状に切断することができるのであり、また切断部材
23のダイチャンバlからの退避および遮閉カバー24
の開放により、バレル引出時の支障とならないのである
Further, in the present invention, as shown in FIGS. 2 and 3, the extrusion die 20 is rotatable around the extrusion die 20 provided in the radial direction of the die chamber 1, and is swingable so as to be able to come into contact with and separate from the die chamber 1. By providing an extruded material cutting device 25 that includes a movably provided cutting member 23 and a shielding cover 24 that surrounds the cutting member 23 in the cutting position and is openable and closable, the material can be cut from each extrusion die 20 in the radial direction. The rod-shaped extruded material that is continuously extruded can be cut into pellets, and the cutting member 23 can be retracted from the die chamber l and the closing cover 24 can be cut into pellets.
By opening the barrel, there is no problem when withdrawing the barrel.

また本発明においては、非駆動側の押出スクリュ軸体組
11における反ダイチャンバ側の各軸一端を、軸受ケー
シング13の軸受15に可回動に軸支させるに当り、第
2図に示すように軸一端に固定される雄テーパスリーブ
26、軸受15に内接しかつ前記雄テーパスリーブ26
に外嵌される雌テーバスリーブ27によるテーパスリニ
ブ嵌合手段を用いることにより、該嵌合部分から容易に
押出スクリュ軸体!Jillの各軸一端を分離させるこ
とができ、これによってバレル3の引抜き、分解作業時
に支障を生じることもないのである。
In addition, in the present invention, when one end of each shaft on the side opposite to the die chamber in the extrusion screw shaft assembly 11 on the non-drive side is rotatably supported by the bearing 15 of the bearing casing 13, as shown in FIG. a male tapered sleeve 26 fixed to one end of the shaft; a male tapered sleeve 26 inscribed in the bearing 15;
By using the taper slinib fitting means by the female taper sleeve 27 that is externally fitted to the screw shaft, it is easy to extrude the screw shaft from the fitting part! One end of each shaft of the Jill can be separated, so that there is no problem when the barrel 3 is pulled out or disassembled.

(実施例) 本発明に係る対向形2軸スクリュ押出機の適切な実施例
の1つを、第1図乃至第5図に亘って説明する。図示の
実施例は、押出材料を連続的に切断してベレット状の成
形品を得るものを示しているが、第1.2図において、
ダイチャンバ1は両端開口の筒形であるとともにその両
端開口は一対の押出用バレル2,3のキャビティと連通
ずる流入路1a、 laとされ、中心部に合流路1bと
され、同合流路1bの環状にめぐる周壁において、ラジ
アル方向に複数の押出ダイ20が列設される。ダイチャ
ンバ1の前記流入路1a、 laを有する軸方向左右両
端に一対の押出用バレル3,3の各一端が接結フランジ
2a、 3a等を介して同心連通状かつ対向状に取付け
られる。両バレル2,3の断面形状は先に第7図におい
て示した従来の2軸スクリュ押出機のそれと同様であり
、また両バレル2,3の各反ダイチャンバ側の一端には
、その外周側にバレル内部と連通ずる投入ロア、9を介
してホッパ6.8が付設され、第1図および第4図に例
示するように、架構21の一側に付設した各フレーム2
8.28上に設置した材料供給装置4,5から供給パイ
プ29.29を介して両バレル2,3にそれぞれ材料を
供給する。図示省略しであるが材料供給装置4.5内に
は材料の収容部、定量計測手段、また給送手段が設けら
れることは従来と同様である。このさい材料供給装置4
,5から各バレル2,3に材料を供給するに当っては、
手動または自動操作によって同調可能であるようにされ
、一方のバレル2内の負荷と他方のバレル3内の負荷が
バランスされるようにすることはいうまでもない。前記
ダイチャンバ1の左右両側に一端の固定された各押出用
バレル2゜3の両者は、第1図および第3.4図に示さ
れるように、バレル下部周側の全長に亘り適宜間隔に設
けた複数のスタンド30が、各バレル2,3に対応して
架構21の上面に軸方向進退可能に架装したスライドフ
レーム22.22に保持させることにより、両バレル2
.3を個々に、また両スライドフレーム22.22を接
合連結状態として、バレル内の清掃およびスクリュエレ
メントの組換作業の際に必要なバレル引出しを可能とす
るのであり、このさいそのスライド長さは一方のバレル
が全長移動できる距離に、更に後述するスクリュ軸軸受
部の長さをプラスしたものとする。前記したスライドフ
レーム22.22の軸方向進退構造は、従来機種におけ
るそれと同様であり、例えば架構21側に操作ハンドル
31により正逆回動可能な駆動ピニオン32を配設し、
これと噛合するラックをスライドフレーム22側に設け
(図示省略)、更に架構21とスライドフレーム22側
に相対応するガイドローラ、ガイドレバー等の直進ガイ
ド構造を設ける等によって容易に可能である。
(Example) One suitable example of the opposed twin-screw extruder according to the present invention will be described with reference to FIGS. 1 to 5. The illustrated embodiment shows that a pellet-shaped molded product is obtained by continuously cutting the extruded material, but in Fig. 1.2,
The die chamber 1 has a cylindrical shape with openings at both ends, and the openings at both ends are inflow passages 1a and 1a communicating with cavities of a pair of extrusion barrels 2 and 3, and a merging passage 1b in the center. A plurality of extrusion dies 20 are arranged in a row in the radial direction on the annular peripheral wall. One end of a pair of extrusion barrels 3, 3 is attached to the left and right ends of the die chamber 1 in the axial direction having the inflow passages 1a, 1a through connecting flanges 2a, 3a, etc., so as to be concentrically connected and facing each other. The cross-sectional shape of both barrels 2 and 3 is similar to that of the conventional twin screw extruder shown in FIG. A hopper 6.8 is attached via an input lower 9 that communicates with the inside of the barrel, and each frame 2 attached to one side of the frame 21 as illustrated in FIGS. 1 and 4.
Materials are supplied to both barrels 2, 3 via supply pipes 29, 29 from material supply devices 4, 5 installed on 8.28, respectively. Although not shown in the drawings, the material supply device 4.5 is provided with a material storage section, quantitative measurement means, and feeding means, as in the prior art. This time material supply device 4
, 5 to each barrel 2, 3,
It goes without saying that it can be synchronized by manual or automatic operation, so that the load in one barrel 2 and the load in the other barrel 3 are balanced. As shown in FIGS. 1 and 3.4, the extrusion barrels 2 and 3, each of which has one end fixed on both the left and right sides of the die chamber 1, are provided at appropriate intervals over the entire length of the lower circumference of the barrel. A plurality of stands 30 corresponding to the respective barrels 2 and 3 are held by slide frames 22 and 22 mounted on the upper surface of the frame 21 so as to be movable in the axial direction.
.. 3 individually and both slide frames 22 and 22 are connected and connected, it is possible to pull out the barrel necessary for cleaning inside the barrel and recombining the screw elements, and in this case the slide length is The length of the screw shaft bearing portion, which will be described later, is added to the distance over which one barrel can move over its entire length. The axial movement structure of the slide frame 22.22 described above is similar to that of the conventional model, and for example, a drive pinion 32 that can be rotated forward and backward by the operation handle 31 is disposed on the frame 21 side,
This can be easily achieved by providing a rack that meshes with this on the slide frame 22 side (not shown), and further providing corresponding linear guide structures such as guide rollers and guide levers on the frame 21 and slide frame 22 sides.

これら一連の押出用バレル2,3内に亘って嵌挿状に内
装する2軸スクリユとして、実施例では第2図に例示す
るように、それぞれ一対の平行に配置されるスクリュ軸
体10a、 10bによる押出スクリュ軸体組■05ま
たスクリュ軸体11a、 llbによる押出スクリュ軸
体組11の両者を、押出用バレル2および押出用バレル
3内に同心対向状に装入し、−方の押出スクリュ軸体組
10におけるスクリュ軸体10a、 10bの各反ダイ
チャンバ側の各軸一端は、図示のように押出用バレル2
の一端に付設または形成した軸受ケーシング12に設け
た各軸受14,14に可回動に軸架させ、また他方の押
出用スクリュ軸体組11におけるスクリュ軸体11a、
llbの同じく反ダイチャンバ側の各軸一端は、図示の
ように押出用バレル3の一端に付設した軸受ケーシング
13に設けた軸受15.15に、各軸一端に固定した雄
テーパスリーブ26、前記軸受15.15に内接する雌
テーパスリーブ27の嵌合を介して分離可能に可回動に
軸支させるのであり、図において33は雌テーパスリー
ブ27の弾支バネを示している。また両押出用クリュ軸
体組10.11における各スクリュ軸体10a。
In this embodiment, as illustrated in FIG. 2, a pair of parallel screw shafts 10a and 10b are used as two-shaft screws that are fitted inside the series of extrusion barrels 2 and 3. Both the extrusion screw shaft assembly 11 made of the screw shafts 11a and llb are placed concentrically oppositely into the extrusion barrel 2 and the extrusion barrel 3, and the - extrusion screw One end of each shaft on the side opposite to the die chamber of the screw shafts 10a and 10b in the shaft assembly 10 is connected to the extrusion barrel 2 as shown in the figure.
The screw shaft 11a in the other extrusion screw shaft assembly 11 is rotatably mounted on each bearing 14, 14 provided in a bearing casing 12 attached or formed at one end, and
One end of each shaft on the side opposite to the die chamber of llb is connected to a bearing 15,15 provided in a bearing casing 13 attached to one end of the extrusion barrel 3, as shown in the figure, and a male taper sleeve 26 fixed to one end of each shaft, and the bearing 15. The female taper sleeve 27 inscribed in the female taper sleeve 27 is fitted so that it can be separated and rotatably supported. In the figure, reference numeral 33 indicates an elastic spring of the female taper sleeve 27. Also, each screw shaft 10a in the double extrusion screw shaft assembly 10.11.

10bおよびスクリュ軸体11a、 ]−1bの各ダイ
チャンバ1側において同心に対向している各軸体10a
および軸体11aの各軸他端と、各軸体10bおよび軸
体11bの各軸他端とは、継手部16その他の手段によ
って接結一体化するのであり、これによってその両端が
可回動に軸支された一連の押出用スクリュ軸体組10.
11がダイチャンバ1を嵌挿した対向形2軸スクリュ機
が構成される。
10b and screw shaft 11a, ]-1b, each shaft 10a facing concentrically on the die chamber 1 side
The other end of each shaft of the shaft body 11a and the other end of each shaft of each shaft body 10b and shaft body 11b are connected and integrated by a joint portion 16 or other means, so that both ends are rotatable. A series of extrusion screw shaft sets 10.
11 constitutes an opposed twin-screw machine in which a die chamber 1 is inserted.

このさいいうまでもないが、両押出用スクリュ軸体ml
o、11における各スクリュのねじ方向は互いに逆方向
とされ、これにより両バレル2.3内の材料は中央のダ
イチャンバ1に向って移動することになる。前記した一
連の押出用スクリュ軸体組10.11を一体に回転させ
るため、実施例では押出用スクリュ軸体組10において
、その軸受ケーシング12の各軸受14,14に軸支さ
れた各スクリュ軸体10a、 10bの各軸一端は接結
部34,34とし、第1図および第2図に示すように、
架構21内に設置した原動135よりベルト、プーリ等
の伝動部材36により回転動力の入力される回転用駆動
装置17に入力させ、必要な減速機構のみによる同駆動
装置17から2本の出力軸18.18を突出させ、出力
軸18.18の接結部37,37と各スクリュ軸体10
a、 10bの前記接結部34,34とを継手部19に
よって連結かつ着脱可能に一体化することにより、第2
図で矢印で示すように同方向回転を与えることになる。
Needless to say, the screw shaft for both extrusions ml
The threading direction of each screw in o, 11 is opposite to each other, so that the material in both barrels 2.3 moves towards the central die chamber 1. In order to rotate the series of extrusion screw shaft assemblies 10 and 11 described above together, in the embodiment, in the extrusion screw shaft assembly 10, each screw shaft supported by each bearing 14, 14 of the bearing casing 12 is rotated. One end of each axis of the bodies 10a, 10b is a connecting part 34, 34, as shown in FIGS. 1 and 2.
Rotational power is inputted from a driving force 135 installed in the frame 21 through a transmission member 36 such as a belt or pulley to a rotational drive device 17, and two output shafts 18 are output from the drive device 17 using only a necessary speed reduction mechanism. .18 protrudes, connecting portions 37, 37 of the output shaft 18.18 and each screw shaft body 10.
By connecting and removably integrating the connection parts 34, 34 of a and 10b through the joint part 19, the second
Rotation in the same direction is applied as shown by the arrows in the figure.

第2図において38は回転用駆動装置17と押出用バレ
ル2との締結パーを示している。
In FIG. 2, reference numeral 38 indicates a fastening member between the rotation drive device 17 and the extrusion barrel 2.

前記した非駆動側の押出スクリュ軸体組11における各
スクリュ軸体11a、 llbの各軸一端を雄テーパス
リーブ26および雌テーバスリーブ27によるテーバス
リーブ嵌合手段により、分離可能に軸支させる構造の実
施例詳細を、第5図について説示すする。このさい両ス
クリュ軸体11a、 llbともに同一構造であるため
、一方のスクリュ軸体11a側についてのみ説明するが
、図示のようにスクリュ軸体11aにはスクリュエレメ
ント38が所定の組合せ順序で嵌設されているが、軸一
端側のスクリュエレメント38に続いてカラー39、リ
バーススクリュが形成されたシールリング40が嵌設さ
れ、前記シールリング40が軸受ケーシング13のシー
ル孔41を貫挿し、ナツト42によって締付は固定され
る。更にナツト42の背後においてスペーサ43を介し
、抽一端の外周に雄テーバリング26がねし嵌め等を介
して一体に固定され、該テーバリング26はその外周面
がテーパ面とされ、これに対し軸受ケーシング13に嵌
設した軸受15に内嵌されるとともに、その内周面をテ
ーパ面とした雌テーバリング27がテーバ嵌合され、間
離テーバリング27の端面にはバネ押え無蓋44を介し
てハネ33が弾支されたものである。この構造によれば
軸一端は軸受15に対し可回動に保持されるとともに、
スクリュ軸体11aの分離に当っては、ハネ押え無蓋4
4を開き、バネ33の弾支を解除し、雌テーパスリーブ
27を抜取ることにより容易にスクリュ軸体の分離が得
られ、バレル引出しや分解作業時に支障を生じることが
ないとともに、再組立に当っては雌テーパスリーブ27
がバネ10により若干の自由度をもって軸一端をグリッ
プするので、これにより芯出し可能である。
A structure in which one end of each shaft of each screw shaft body 11a, llb in the extrusion screw shaft assembly 11 on the non-driving side is rotatably supported by a tapered sleeve fitting means of a male tapered sleeve 26 and a female tapered sleeve 27. Details of the embodiment will be explained with reference to FIG. At this time, since both screw shaft bodies 11a and llb have the same structure, only one screw shaft body 11a side will be explained, but as shown in the figure, the screw elements 38 are fitted into the screw shaft body 11a in a predetermined combination order. However, a collar 39 and a seal ring 40 in which a reverse screw is formed are fitted next to the screw element 38 on one end of the shaft, and the seal ring 40 penetrates the seal hole 41 of the bearing casing 13, and the nut 42 The tightening is fixed by Further, behind the nut 42, a male tapered ring 26 is integrally fixed to the outer periphery of the bolted end via a spacer 43 by a threaded fit or the like, and the outer circumferential surface of the tapered ring 26 is tapered, whereas the bearing casing A female tapered ring 27 whose inner peripheral surface is tapered is fitted into the bearing 15 fitted in the bearing 13 , and a spring 33 is attached to the end surface of the spaced apart tapered ring 27 via a spring retainer cover 44 . It was supported by bullets. According to this structure, one end of the shaft is rotatably held relative to the bearing 15, and
When separating the screw shaft body 11a, use the spring presser with no lid 4.
4, release the elastic support of the spring 33, and pull out the female taper sleeve 27, the screw shaft body can be easily separated, and there is no problem during barrel withdrawal or disassembly work, and it is easy to reassemble. It is female taper sleeve 27
Since the spring 10 grips one end of the shaft with a certain degree of freedom, centering is possible.

このさいリバーススクリュを設けたシールリング40に
より、軸一端のケーシング貫通部分よりの材料漏出は阻
止され、また万一漏出してもこれは軸受ケーシング13
内の空間45より放出口46をへて機外に排出可能であ
る。但し実施例においてテーパスリーブ嵌合手段の他は
、回倒以外の構造を用いることもできる。
At this time, the seal ring 40 provided with a reverse screw prevents material from leaking from the casing penetrating portion at one end of the shaft, and even if material leaks, it will be transferred to the bearing casing 13.
It can be discharged from the inner space 45 through a discharge port 46 to the outside of the machine. However, in the embodiments, other than the tapered sleeve fitting means, a structure other than the rotating structure may be used.

また本発明においては、ダイチャンバ1におけるラジア
ル方向に設けた複数の押出ダイ20から押出される成形
材料をペレット状に切断する押出材料切断装置25を第
2図に示すように設置したものを示しており、次に同装
置25の詳細を説示する。
Further, in the present invention, an extruded material cutting device 25 for cutting the molding material extruded from a plurality of extrusion dies 20 provided in the radial direction in the die chamber 1 into pellets is installed as shown in FIG. Next, details of the device 25 will be explained.

第2図および第3図に例示するように、ダイチャンバ1
における外周−側にリングギヤ47を可回動に嵌設し、
同リングギヤ47の押出ダイ20に向かう内面に形成し
た環状凸部48の一部に、前記押出ダイ20と正対する
切断部材23を取付けるとともに、第1図、第3図に示
されるように架構21の一側に枢軸49を介して、同枢
軸49を支点として揺動可能な揺動アーム50を取付け
、該揺動アーム50に保持させた装置本体51にモータ
等の原動機52を設置し、該原動機52の出力軸53を
前記装置本体51に軸架し、かつ前記リングギヤ47に
噛合させた駆動ピニオン54の軸55に連結するのであ
り、これによってリングギヤ47の回動により切断部材
23は各押出ダイ20をめぐって回動することにより、
押出ダ・イ20より連続棒状に成形押出される材料は連
続的に切断されてペレット状成形品となるのである。こ
のさい切断されたペレット状成形品の飛散防止と、これ
らを目的位置に排出誘導するガイドとして働く遮閉カバ
ー24が設けられる。該遮閉カバー24は断面樋形の環
筒体であるとともに、第3図に示すように枢軸56によ
って2分割かつ開閉可能とされる。
As illustrated in FIGS. 2 and 3, the die chamber 1
A ring gear 47 is rotatably fitted on the outer circumferential side of
A cutting member 23 that directly faces the extrusion die 20 is attached to a part of the annular convex portion 48 formed on the inner surface of the ring gear 47 facing the extrusion die 20, and the frame 21 is attached as shown in FIGS. A swinging arm 50 that can swing about the pivot 49 is attached to one side via a pivot 49, and a prime mover 52 such as a motor is installed on the device main body 51 held by the swinging arm 50. The output shaft 53 of the prime mover 52 is mounted on the apparatus main body 51 and connected to the shaft 55 of a drive pinion 54 meshed with the ring gear 47, so that the rotation of the ring gear 47 causes the cutting member 23 to cut into each extrusion. By rotating around the die 20,
The material extruded into a continuous rod shape from the extrusion die 20 is continuously cut into pellet-shaped molded products. At this time, a shielding cover 24 is provided which serves to prevent the cut pellet-shaped molded products from scattering and to serve as a guide to discharge and guide them to the target position. The shielding cover 24 is an annular cylinder with a gutter-shaped cross section, and can be divided into two parts and opened and closed by a pivot 56, as shown in FIG.

これによって切断されたペレット状成形品は、飛散する
ことなく遮閉ペレット24の内面によって受止められ、
かつカバー内面に沿って下方に誘導され、排出シュート
57より移送コンベア58によって目的位置に移送され
ることになる。尚第2図において59は遮閉カバー24
における環状凸部48に接するシール縁である。このさ
い前記切断部材23は揺動アーム50に保持されている
ので、また遮閉カバー24も枢軸56を支点として開閉
可能とされているので、バレル引出しに当っては、第3
図に示すように閉合状態の遮閉カバー24を実線位置よ
り鎖線位置に示すように上方に開放させ、また揺動アー
ム50を同じく実線位置より鎖線位置に示すように回動
伏倒させることにより、押出材料切断装置25の全体を
架構21側に退避させることによって、バレル引出しは
支障なく得られることになる。
The pellet-shaped molded product thus cut is received by the inner surface of the shielding pellet 24 without scattering,
Then, it is guided downward along the inner surface of the cover, and is transferred from the discharge chute 57 to the destination position by the transfer conveyor 58. In addition, in FIG. 2, 59 is the blocking cover 24.
This is the seal edge in contact with the annular convex portion 48 at. At this time, since the cutting member 23 is held by the swinging arm 50, and the blocking cover 24 can also be opened and closed using the pivot shaft 56 as a fulcrum, the third
As shown in the figure, the closed cover 24 is opened upward from the solid line position to the chain line position, and the swing arm 50 is also rotated from the solid line position to the chain line position. By retracting the entire extruded material cutting device 25 to the frame 21 side, the barrel can be pulled out without any problem.

上記した実施例によれば、駆動装置17により押出スク
リュ軸体MiI0.11を回転させるとともに、両バレ
ル2,3内に材料供給装置4,5からホッパ6゜8およ
び投入ロア、9を介し等量の材料を供給することにより
、2軸スクリユの回転による粉砕、剪断、混練、圧縮等
の機械的処理、更には図示省略しであるが、既知のよう
にバレル2,3の各周側を囲繞して配設される加熱源あ
るいは冷却源による加熱あるいは冷却による熱処理とと
もに、各材料は、バレル2,3のホンパ側から中央のダ
イチャンバ1側に向かって逐次移送され、ダイチャンバ
1内の合流路1bにおいて両材料は合流し、円周方向に
設けた各押出ダイ20からそれぞれ押出されることにな
り、押出材料切断装置25を設けたものにおいては、押
出材料は連続的に切断されてペレソI−状の成形品とし
て、先に説示したように機外に排出されることになる。
According to the embodiment described above, the extrusion screw shaft MiI0.11 is rotated by the drive device 17, and the material feed devices 4 and 5 are fed into both barrels 2 and 3 via the hopper 6° 8 and the input lower 9, etc. By supplying the same amount of material, mechanical processing such as crushing, shearing, kneading, and compression by the rotation of a two-shaft screw, and furthermore, although not shown, each circumferential side of the barrels 2 and 3 is performed as is known. Along with heat treatment by heating or cooling using surrounding heating sources or cooling sources, each material is sequentially transferred from the header side of the barrels 2 and 3 toward the die chamber 1 side in the center, and is passed through the confluence channel in the die chamber 1. 1b, the two materials join together and are extruded from each extrusion die 20 provided in the circumferential direction. In the case where an extrusion material cutting device 25 is provided, the extrusion material is continuously cut and As explained above, the molded product is discharged outside the machine as a --shaped molded product.

またバレル内の清掃や組立スクリュエレメントの組替作
業等に際しては、スライドフレーム22によって容易に
引出し可能であり、このさい押出材料切断装置25の切
断部材20や遮閉カバー24の存在は、揺動退避、また
開放によってバレル引出しに支障を生じるおそれなく、
スクリュ軸体11a、llbにおける反ダイチャンバ側
の軸一端側を軸受15.15に可回動に軸支させるに当
っても、その雄テーパリング26および雌テーパリング
27によるテーパリング嵌合手段による分離可能な構造
によって、スクリュ軸体の分離、引出しも容易に実現で
きるのである。
In addition, when cleaning the inside of the barrel or rearranging the assembled screw elements, it can be easily pulled out using the slide frame 22. At this time, the existence of the cutting member 20 of the extruded material cutting device 25 and the closing cover 24 makes it possible to There is no risk of hindrance to the barrel drawer due to evacuation or opening.
Even when one end of the shaft on the side opposite to the die chamber in the screw shaft bodies 11a, llb is rotatably supported on a bearing 15.15, separation is achieved by the tapered ring fitting means of the male taper ring 26 and female taper ring 27. The possible structure also makes it easy to separate and pull out the screw shaft.

(発明の効果) 本発明の2軸スクリュ押出機によれば、従来の軸一端の
みを支持する片持支持タイプの2軸スクリユに対し、ダ
イチャンバを挟んで軸方向左右に一連に連なる押出用バ
レル内に一対の押出スクリュ軸体組の2組を対向状にか
つダイチャンバ貫挿状に装入し、両軸棒組の各スクリュ
軸体の各一端をそれぞれ可回動に軸支させ、各スクリュ
軸体の各他端はダイチャンバ内で一体化する構成とする
ことにより、両端支持タイプの2軸スクリユによる押出
機が可能となる点において大きな特徴と利点を持つもの
である。即ちこれによれば両端支持ツタめに、バレル内
面とスクリュ軸体の接触トラブルは全く生しないのであ
り、各部材の長寿命化が得られるとともに、摩耗異物が
材料中に混入することも全く絶無である。しかもスクリ
ュ軸体に作用するスラスト力がバランスするため、従来
必須とされていたスラスト軸受等は全く不要化され、か
つ両端軸支の軸受も一般的なラジアル軸受で足りること
になり、軸支構造も著しく簡単化される。
(Effects of the Invention) According to the twin-screw extruder of the present invention, extrusion barrels are connected in series from left to right in the axial direction with the die chamber in between, unlike the conventional twin-screw screw of the cantilever support type that supports only one end of the shaft. Two pairs of extrusion screw shaft assemblies are inserted into the die chamber so as to face each other, and one end of each screw shaft of the double shaft rod assembly is rotatably supported. By configuring the other ends of the shaft body to be integrated within the die chamber, it has a great feature and advantage in that it becomes possible to use an extruder with a two-screw screw supported at both ends. In other words, with this method, there is no contact problem between the inner surface of the barrel and the screw shaft due to the support vines at both ends, which results in a longer service life for each component, and there is no possibility of abrasion foreign matter getting mixed into the material. It is. Moreover, since the thrust force acting on the screw shaft is balanced, thrust bearings, etc., which were previously considered essential, are completely unnecessary, and general radial bearings are sufficient for the shaft support at both ends, making the shaft support structure is also significantly simplified.

このさい押出スクリュ軸体組におけるねじ方向の逆リー
ド構造により、両バレル内供給材料は中央のダイチャン
バに向かってそれぞれ移送され、回転方向の影響を受け
た被処理材料(流体)の流れが打ち消し合うことになっ
て、ダイチャンバのラジアル方向に設けた押出グイから
の吐出しも安定化され、円滑で滞流のない押出成形が得
られる。
At this time, due to the reverse lead structure in the thread direction of the extrusion screw shaft assembly, the materials supplied in both barrels are transferred toward the central die chamber, and the flow of the processed material (fluid) affected by the rotation direction cancels out. Consequently, the discharge from the extrusion gouers provided in the radial direction of the die chamber is also stabilized, and smooth extrusion molding without stagnation can be obtained.

しかも本発明の押出機構成によれば、バレル内の清掃や
スクリュエレメント組換等のメンテナンスに当って必要
なバレル引出しまたスクリュ軸体の分離も支障な(行え
るし、作業性もまた良好である。またダイチャンバ゛の
押出ダイから吐出される押出材料の切断も、ダイチャン
バ側に設けられる押出材料切断装置により、容易にその
連続切断が可能となるのであり、対向形にすることによ
って予想されるデメリットを最少限に止めることができ
る。更に2軸スクリユの駆動回転に当っても、一方の押
出スクリュ軸体組に、減速機構のみによる回転駆動装置
からの2本の出力軸を該当スクリュ軸体に直結するのみ
で足り、片持支持タイプにおける減速機と回転駆動ギヤ
系列の別置という不便もなく、かつ押出機全長をよりコ
ンパクト化できるのであり、片持支持タイプの2軸スク
リュ押出機における不利を解消し、これる代る新しい2
抽スクリュ押出機として優れた利点を持つものである。
Moreover, according to the extruder configuration of the present invention, it is possible to pull out the barrel and separate the screw shaft body, which are necessary for maintenance such as cleaning inside the barrel and recombining screw elements, without any trouble (and the workability is also good). Also, the extruded material discharged from the extrusion die of the die chamber can be easily continuously cut by the extruded material cutting device installed on the die chamber side, which eliminates the disadvantages that may be expected by using the facing type. Furthermore, when driving rotation of a two-shaft screw, two output shafts from a rotary drive device using only a speed reduction mechanism are attached to one extrusion screw shaft assembly. A direct connection is sufficient, and there is no inconvenience of having to separate the reducer and rotary drive gear train in the cantilever support type, and the overall length of the extruder can be made more compact, which is a disadvantage in the cantilever support type twin screw extruder. Eliminate this and replace it with a new 2
This has excellent advantages as a extraction screw extruder.

【図面の簡単な説明】 第1図は本発明押出機実施例の組立外観正面図、第2図
は同2軸スクリユ要部の継断平面図、第3図は同ダイチ
ャンバ配設押出材料切断装置実施例の要部側面図、第4
図は同材料供給要部の側面図、第5図は同罪駆動制御ス
クリュ軸体組におけるスクリュ軸体一端の軸支構造実施
例の要部断面図、第6図は従来の片持支持形2軸スクリ
ュ押出機の縦断正面図、第7図は第6図A−A線断面図
である。 1・・・ダイチャンバ、2.3・・・押出用バレル、4
,5・・・材料供給装置、6,8・・・ホッパ、10.
11・・・押出スクリュ軸体組、10a、10b、ll
a、llb −押出スクリュ軸体、12.13・・・軸
受ケーシング、14.15・・・軸受、17・・・回転
用駆動装置、18・・・出力軸、20・・・押出ダイ、
23・・・切断部材、24・・・遮閉カバー、21・・
・架構、22・・・スライドフレーム、25・・・押出
材料切断装置、26・・・雄テーバスリーブ、27・・
・雌テーバスリーブ。
[Brief Description of the Drawings] Fig. 1 is an assembled external front view of an embodiment of the extruder of the present invention, Fig. 2 is a joint cross-sectional plan view of the main parts of the twin-screw screw, and Fig. 3 is a cutting of the extruded material arranged in the die chamber. Main part side view of device embodiment, 4th
The figure is a side view of the main part of the material supply, FIG. 5 is a sectional view of the main part of an embodiment of the shaft support structure for one end of the screw shaft in the same drive control screw shaft assembly, and FIG. 6 is a conventional cantilever support type 2 FIG. 7 is a longitudinal sectional front view of the axial screw extruder, and FIG. 7 is a sectional view taken along the line A-A in FIG. 6. 1...Die chamber, 2.3...Extrusion barrel, 4
, 5... material supply device, 6, 8... hopper, 10.
11... Extrusion screw shaft assembly, 10a, 10b, ll
a, llb - Extrusion screw shaft body, 12.13... Bearing casing, 14.15... Bearing, 17... Rotation drive device, 18... Output shaft, 20... Extrusion die,
23... Cutting member, 24... Closing cover, 21...
- Frame, 22... Slide frame, 25... Extruded material cutting device, 26... Male Taper sleeve, 27...
・Female Taber sleeve.

Claims (3)

【特許請求の範囲】[Claims] (1)ラジアル方向に押出ダイを設けるダイチャンバと
、該ダイチャンバを挟んで軸方向左右に同心連通状に取
付けられるとともに軸方向スライド可能に保持され、そ
れぞれ材料供給手段を具備した一対の押出用バレルと、
該両バレル内に同心かつ対向状に装入され、かつそれぞ
れ反ダイチャンバ側の2軸各一端は可回動に軸支され、
ダイチャンバ側の2軸各他端は該チャンバ内において互
いに連結一体化するとともに、それぞれのねじ方向は互
いに逆方向とした各一対の押出スクリュ軸体組と、何れ
か一方の押出スクリュ軸体組に連結される回転用駆動手
段とから成ることを特徴とする対向形2軸スクリュ押出
機。
(1) A die chamber in which an extrusion die is provided in the radial direction, and a pair of extrusion barrels that are installed concentrically on the left and right sides in the axial direction with the die chamber in between, are held slidably in the axial direction, and are each equipped with a material supply means. ,
Two shafts are inserted into both barrels concentrically and facing each other, and one end of each shaft on the side opposite to the die chamber is rotatably supported,
The other ends of the two shafts on the die chamber side are connected and integrated with each other in the chamber, and each pair of extrusion screw shaft assemblies whose thread directions are opposite to each other, and one of the extrusion screw shaft assemblies are connected to each other. 1. An opposed twin-screw extruder comprising a rotation drive means connected to each other.
(2)ダイチャンバの押出ダイを囲んで可回動兼揺動可
能に配設される切断部材と開閉可能な遮閉カバーとから
成る押出材料切断手段を設ける請求項1記載の対向形2
軸スクリュ押出機。
(2) The opposed type 2 according to claim 1, further comprising an extruded material cutting means comprising a cutting member rotatably and swingably disposed surrounding the extrusion die of the die chamber and a closing cover that can be opened and closed.
Axial screw extruder.
(3)非駆動側の押出スクリュ軸体における反ダイチャ
ンバ側の各軸一端が、テーパスリーブ嵌合手段を介して
支持軸受側に分離可能に保持される請求項1又は2記載
の対向形2軸スクリュ押出機。
(3) The opposed twin shafts according to claim 1 or 2, wherein one end of each shaft on the side opposite to the die chamber in the extrusion screw shaft on the non-driving side is separably held on the support bearing side via a tapered sleeve fitting means. screw extruder.
JP63077729A 1988-03-30 1988-03-30 Counter type double-screw extruding machine Pending JPH01249320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63077729A JPH01249320A (en) 1988-03-30 1988-03-30 Counter type double-screw extruding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63077729A JPH01249320A (en) 1988-03-30 1988-03-30 Counter type double-screw extruding machine

Publications (1)

Publication Number Publication Date
JPH01249320A true JPH01249320A (en) 1989-10-04

Family

ID=13641989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63077729A Pending JPH01249320A (en) 1988-03-30 1988-03-30 Counter type double-screw extruding machine

Country Status (1)

Country Link
JP (1) JPH01249320A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140018208A (en) * 2011-03-31 2014-02-12 가부시끼가이샤 니혼 세이꼬쇼 Screw shaft structure for double-shaft extruder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140018208A (en) * 2011-03-31 2014-02-12 가부시끼가이샤 니혼 세이꼬쇼 Screw shaft structure for double-shaft extruder

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