JPS61152425A - Cylinder for extruder - Google Patents

Cylinder for extruder

Info

Publication number
JPS61152425A
JPS61152425A JP59279005A JP27900584A JPS61152425A JP S61152425 A JPS61152425 A JP S61152425A JP 59279005 A JP59279005 A JP 59279005A JP 27900584 A JP27900584 A JP 27900584A JP S61152425 A JPS61152425 A JP S61152425A
Authority
JP
Japan
Prior art keywords
cylinder
elements
recesses
tubular body
axial direction
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
JP59279005A
Other languages
Japanese (ja)
Inventor
Shinichi Fukumizu
福水　伸一
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 JP59279005A priority Critical patent/JPS61152425A/en
Publication of JPS61152425A publication Critical patent/JPS61152425A/en
Pending legal-status Critical Current

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
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
    • 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
    • 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
    • B29C48/56—Screws having grooves or cavities other than the thread or the channel
    • 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
    • B29C48/03—Extrusion 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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To facilitate working of the cylinder provided with recess on the internal circumference thereof by a method wherein an inner tubular body is formed by piling multiple elements having the same configuration and the positions of all elements are deviated sequentially in the circumferential direction thereof to arrange the recesses on the internal circumferential surfaces into spiral configuration. CONSTITUTION:Engaging recesses 12 are semi-circular or square and are engaged with a pin 14 or a key provided on the inner peripheral surface of an outer tubular body 7 to preclude the turning of the elements 10 with respect to the outer tubular body 7. The engaging recesses 12 of respective elements 10 are deviated slightly in the phases with respect to the recesses 13 of respective elements and when the engaging recesses 12 of respective elements 10 are engaged with one piece of pin 14, the recesses 13 are arranged so as to describe a screw in the axial direction of the cylinder and more than one set of continuous spiral recesses are formed by all of the elements 9. The cylinder is formed by inner and outer tubular bodies in such manner and the inner tubular body is formed by piling multiple elements of the same configuration in the axial direction thereof, therefore, the cylinder may be worked simply by a conventional machine tool.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、合成樹脂の押出・混練に用いられる押出機用
シリンダに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cylinder for an extruder used for extruding and kneading synthetic resin.

（従来の技術） 例えば、射出成形機用シリンダ又は混練機用シリンダに
おいては、混練効果を上げるために、シリンダ内周面が
非真円形状となっている。(Prior Art) For example, in a cylinder for an injection molding machine or a cylinder for a kneading machine, the inner circumferential surface of the cylinder has a non-perfect circular shape in order to improve the kneading effect.

この種の従来装置としては、特公昭５８−２９７３１号
公報に（第４・５図に示す）に開示されたものがあり、
この装置のシリンダＢは一体物で、内周面Ｃが軸線方向
に対し直角断面が多角形で、他部より軸線からの距離が
大の凹部１３を多数箇所に有し、この凹部１３を軸線方
向に螺旋状に形成している。As a conventional device of this type, there is one disclosed in Japanese Patent Publication No. 58-29731 (shown in Figures 4 and 5).
The cylinder B of this device is a one-piece body, and the inner circumferential surface C has a polygonal cross section perpendicular to the axial direction, and has many recesses 13 that are longer distances from the axis than other parts. It is formed in a spiral shape in the direction.

（発明が解決しようとする問題点） 前記従来シリンダでは、一体物の内周面を特殊形状に形
成しなければならなく、極めて特殊な専用加工機を必要
とし、汎用加工機は使用し難く、また内周面が部分的に
摩耗又は腐蝕すると、シリンダ全体を取換える必要があ
り、極めてコストの高いものであった。(Problems to be Solved by the Invention) In the conventional cylinder, the inner peripheral surface of the integral body must be formed into a special shape, requiring a very special dedicated processing machine, and it is difficult to use a general-purpose processing machine. Furthermore, if the inner circumferential surface becomes partially worn or corroded, the entire cylinder must be replaced, resulting in extremely high costs.

（問題点を解決するための手段） 本発明は、このような従来技術の問題点を、シリンダを
内外２重筒構造にし、且つシリンダ内周面を形成した内
筒体を同一形状のエレメントを多数重合して形成し、更
に全エレメントの位置を周方向に順次ずらして内周面の
凹部を螺旋状に配列することにより、総て解決するよう
にしたものである。(Means for Solving the Problems) The present invention solves the problems of the prior art by making the cylinder have a dual-tube structure, inside and outside, and by using elements of the same shape to form the inner cylindrical body that forms the inner peripheral surface of the cylinder. All of these problems are solved by forming a large number of elements by superimposing them, and further by sequentially shifting the positions of all the elements in the circumferential direction and arranging the recesses on the inner circumferential surface in a spiral shape.

即ち、本発明における問題解決手段の具体的構成は、ス
クリュを包囲するシリンダ内周面に軸線からの距離が他
部より大の凹部を少なくとも１箇所に有し、この凹部が
軸線方向に螺旋状に形成された押出機用シリンダにおい
て、前記シリンダは外筒体とこの外筒体内に廻止め状態
に嵌入されていて前記シリンダ内周面を形成した内筒体
とを有し、前記内筒体は内周面に凹部を有する同一形状
のエレメントを軸線方向に多数重合し且つエレメントを
周方向にずらして全凹部をＩａｌ旋状に配列して形成さ
れている点を特徴とする。That is, the specific configuration of the problem-solving means of the present invention is that the inner circumferential surface of the cylinder surrounding the screw has at least one recess that is larger in distance from the axis than other parts, and this recess has a spiral shape in the axial direction. In the cylinder for an extruder formed in is characterized in that it is formed by stacking a large number of identically shaped elements having recesses on the inner circumferential surface in the axial direction, shifting the elements in the circumferential direction, and arranging all the recesses in a spiral shape.

（実施例） 以下、本発明の実施例を図面に基いて説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

第１〜３図において、１は熱可塑性合成樹脂を熔融混練
しながら押出す押出機で、供給部２、送給部３、混ｖＬ
耶４及び針量部５等を直列に配列して形成されており、
スクリュＡは全部２．３．４．５を貫通した１本スクリ
ュであるが、シリンダＢは４部分に分割され互いに直結
されている。In Figures 1 to 3, 1 is an extruder that extrudes thermoplastic synthetic resin while melting and kneading it;
It is formed by arranging the shank 4, needle amount part 5, etc. in series,
Screw A is a single screw that passes through 2.3.4.5, but cylinder B is divided into four parts and directly connected to each other.

混線部４において、スクリュ４Ａは断面略楕円形状で、
これをねじってゆるやかな螺旋状にし且つ軸方向途中で
ねじり方向を逆にした形状となっており、このスクリュ
混練部４＾を包囲しているシリンダ４Ｂに本発明が適用
されている。In the cross section 4, the screw 4A has a substantially elliptical cross section;
The present invention is applied to the cylinder 4B which is twisted into a gentle spiral shape and whose twist direction is reversed midway in the axial direction, and which surrounds this screw kneading section 4^.

シリンダー４Ｂは隣接するシリンダ３Ｂ、　５Ｂと締結
される外筒体７と、この外筒体７内に嵌入され止め板８
で抜止めされる内情体９とを有している。The cylinder 4B includes an outer cylindrical body 7 that is fastened to the adjacent cylinders 3B and 5B, and a stop plate 8 that is fitted into the outer cylindrical body 7.
It has an internal information body 9 which is prevented from coming out.

前記内情体９は軸方向に分割された多数のエレメントｌ
Ｏを重合したもので、実質的にシリンダ４Ｂの内周面Ｃ
を形成している。前記各ニレメン）１０は同一形状の孔
１１と外周面に形成した同一形状の係合凹部１２とを有
している。The internal body 9 has a large number of elements divided in the axial direction.
Polymerized with O, substantially the inner circumferential surface C of the cylinder 4B
is formed. Each of the elmmen 10 has a hole 11 of the same shape and an engagement recess 12 of the same shape formed on the outer peripheral surface.

前記孔１１は軸線り方向に対して直角の断面形状が、お
むすび形、楕円形、三角形又はその他の多角形であり、
内周面１１ａは軸線りからの距離Ｒが他部の距離ｒより
大である凹部１３を少なくとも１箇所に有している。凹
部１３が１箇所の場合、孔１１はおむすび形、２箇所の
場合は楕円又は菱形、３箇所以上の場合は多角形となる
。The cross-sectional shape of the hole 11 perpendicular to the axial direction is a rice ball shape, an ellipse, a triangle, or another polygon,
The inner circumferential surface 11a has at least one recess 13 in which the distance R from the axis is greater than the distance r in other parts. When there is one recess 13, the hole 11 has a rice ball shape, when there are two recesses, it has an ellipse or diamond shape, and when there are three or more recesses, it has a polygonal shape.

前記係合凹部１２は半円形又は角形で、外筒体７の内周
面に設けられたピン１４又はキーと係合し、外筒体７に
対するエレメント１０の廻止めが為される。この係合凹
部１２は各エレメント１０毎に凹部１３に対する位相が
少しずつずれており、各エレメントｌＯの係合凹部１２
を１本のピン１４に係合させると、凹部１３が軸線方向
に螺旋を画くように配列され、内筒体９全体で１本以上
の連続した螺旋凹条を形成する。エレメント１０のずれ
角を変更すると、螺旋凹条の進み角を変更することがで
きる。The engagement recess 12 has a semicircular or square shape and engages with a pin 14 or a key provided on the inner peripheral surface of the outer cylinder 7 to prevent the element 10 from rotating relative to the outer cylinder 7. The engagement recess 12 of each element 10 is slightly out of phase with respect to the recess 13, and the engagement recess 12 of each element 10
When engaged with one pin 14, the recesses 13 are arranged in a spiral in the axial direction, forming one or more continuous spiral grooves in the entire inner cylindrical body 9. By changing the deviation angle of the element 10, the advance angle of the spiral groove can be changed.

第１図に示すエレメント１０は、孔１１の内周面１１ａ
がその側面に対して直角であるが、隣接するエレメント
の内周面同志が滑らかに連続するように３次曲面であっ
ても良く、総てのエレメント１０の形状（係合凹部１２
は除＜）隣間−である。各エレメント１０は係合凹部１
２の位相は異なるが、ピン１４の代りに外筒体７と内筒
体９とをスプライン又はセレーション結合したり、外筒
体７の外周面に螺旋凸条を、内筒体９にそれと螺合する
螺旋凹条を形成したりすれば、総てのエレメントを全く
同一形状にすることができる。The element 10 shown in FIG.
is perpendicular to its side surface, but may be a cubic curved surface so that the inner circumferential surfaces of adjacent elements are smoothly continuous, and the shape of all elements 10 (the engaging recess 12
is except <) between the neighbors. Each element 10 has an engaging recess 1
Although the phase of 2 is different, instead of the pin 14, the outer cylinder body 7 and the inner cylinder body 9 may be connected by spline or serrations, or a spiral protrusion may be formed on the outer peripheral surface of the outer cylinder body 7, and a spiral convex line may be formed on the outer circumferential surface of the outer cylinder body 7, and a spiral convex line may be formed on the outer circumferential surface of the outer cylinder body 7. By forming matching spiral grooves, all the elements can be made to have exactly the same shape.

前記混練部４は外筒体７にピン１４を取付けておいて、
多数のエレメント１０の係合凹部１２をピン１４に係合
じながら外筒体７内に嵌入して、止め板８を取付けて内
筒体９を完成し、その後送給部３及び計量部５と連結し
、また供給部２も連結した後、それらのシリンダＢ内に
スクリュＡを貫通して組立てを完了する。The kneading section 4 has a pin 14 attached to the outer cylinder body 7,
The engagement recesses 12 of a large number of elements 10 are fitted into the outer cylindrical body 7 while engaging with the pins 14, the stop plates 8 are attached, and the inner cylindrical body 9 is completed. After connecting the cylinders B and the supply section 2, the screw A is passed through the cylinders B to complete the assembly.

供給部２に投入された樹脂材料（１又は２種以上の樹脂
及び無機充填剤等）は、供給部２及び送給部３で予備溶
融されなから混練部４へ送られ、スクリュＡとシリンダ
内周面Ｃの凹部１３とにより、圧縮と開放を繰返して剪
断力が加えられ且つ熱及び混線作用も加えられながら計
量部５へ送られ、計量部５で完全熔融されて図外のダイ
へ供給される。The resin material (one or more types of resin, inorganic filler, etc.) fed into the supply section 2 is pre-melted in the supply section 2 and the feed section 3 before being sent to the kneading section 4, where it is passed through the screw A and the cylinder. The concave portion 13 of the inner circumferential surface C repeatedly compresses and releases the material, applying shearing force, as well as heat and crosstalk, while sending it to the measuring section 5, where it is completely melted and sent to a die (not shown). Supplied.

（発明の効果） 以上詳述した本発明においては、シリンダを内・外筒体
で形成し且つ内筒体を同一形状のエレメントを軸線方向
に多数重合して形成しているので、汎用加工機で簡単に
加工でき、部分的に摩耗又は腐蝕しても、一部のエレメ
ントを取換えるだけで補修ができ、また、同一形状のエ
レメントは周方向にずらして内周面の凹部を４１’旋状
に配列して、シリンダ内周面の全体的な蝦旋状凹部とし
ているので、内周凹部を有するシリンダの加工が極めて
容易であり、且つ凹部を種々の進み角の岬旋状に配列す
ることができる。(Effects of the Invention) In the present invention described in detail above, the cylinder is formed of an inner and outer cylinder, and the inner cylinder is formed by stacking a large number of elements of the same shape in the axial direction. It can be easily machined with Since the concave portions are arranged in a circular shape to form a spiral concave portion on the inner circumferential surface of the cylinder, it is extremely easy to process a cylinder having concave portions on the inner circumference, and the concave portions can be arranged in a promontory shape with various advance angles. be able to.

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

第１〜３図は本発明の実施例を示しており、第１図は内
筒体の斜視図、第２図は全体断面図、第３図は第２図の
Ｉ−１［［線断面図、第４・５図は従来技術を示してお
り、第４図は縦断面図、第５図は第４図のＶ−Ｖ線断面
図である。 １・・・押出機、４・・・混練部、７・・・外筒体、９
・・・内筒体、１０・・・エレメント、１１・・・孔、
ｌｌａ・・・内周面、１２・・・係合凹部、１３・・・
凹部、１４・・・ピン、Ａ・・・スクリュ、Ｂ・・・シ
リンダ、Ｃ・・・シリンダ内周面、Ｄ・・・軸線、Ｒ，
ｒ・・・距離。1 to 3 show examples of the present invention, in which FIG. 1 is a perspective view of the inner cylinder, FIG. 2 is an overall sectional view, and FIG. 4 and 5 show the prior art, FIG. 4 is a longitudinal sectional view, and FIG. 5 is a sectional view taken along the line V--V in FIG. 4. 1... Extruder, 4... Kneading section, 7... Outer cylinder, 9
... Inner cylinder body, 10 ... Element, 11 ... Hole,
lla...inner peripheral surface, 12...engaging recess, 13...
Recessed portion, 14... Pin, A... Screw, B... Cylinder, C... Cylinder inner peripheral surface, D... Axis line, R,
r...distance.

Claims (1)

【特許請求の範囲】[Claims] １、スクリュを包囲するシリンダ内周面に軸線からの距
離が他部より大の凹部を少なくとも１箇所に有し、この
凹部が軸線方向に螺旋状に形成された押出機用シリンダ
において、前記シリンダは外筒体とこの外筒体内に廻止
め状態に嵌入されていて前記シリンダ内周面を形成した
内筒体とを有し、前記内筒体は内周面に凹部を有する同
一形状のエレメントを軸線方向に多数重合し且つエレメ
ントを周方向にずらして全凹部を螺旋状に配列して形成
されていることを特徴とする押出機用シリンダ。1. A cylinder for an extruder, which has at least one recess on the inner peripheral surface of the cylinder surrounding the screw, the distance from the axis being larger than other parts, and this recess is formed in a spiral shape in the axial direction. has an outer cylindrical body and an inner cylindrical body that is fitted into the outer cylindrical body in a non-rotating state and forms the inner circumferential surface of the cylinder, and the inner cylindrical body is an element of the same shape having a concave portion on the inner circumferential surface. 1. A cylinder for an extruder, characterized in that it is formed by polymerizing a large number of elements in the axial direction, shifting the elements in the circumferential direction, and arranging all the recesses in a spiral shape.
JP59279005A 1984-12-26 1984-12-26 Cylinder for extruder Pending JPS61152425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59279005A JPS61152425A (en) 1984-12-26 1984-12-26 Cylinder for extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59279005A JPS61152425A (en) 1984-12-26 1984-12-26 Cylinder for extruder

Publications (1)

Publication Number Publication Date
JPS61152425A true JPS61152425A (en) 1986-07-11

Family

ID=17605072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59279005A Pending JPS61152425A (en) 1984-12-26 1984-12-26 Cylinder for extruder

Country Status (1)

Country Link
JP (1) JPS61152425A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334163A2 (en) * 1988-03-25 1989-09-27 Bayer Ag Extruder with ceramic parts
JP2016078243A (en) * 2014-10-10 2016-05-16 株式会社日本製鋼所 Screw piece pulling out jig and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334163A2 (en) * 1988-03-25 1989-09-27 Bayer Ag Extruder with ceramic parts
JP2016078243A (en) * 2014-10-10 2016-05-16 株式会社日本製鋼所 Screw piece pulling out jig and method

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