JPS61152425A - Cylinder for extruder - Google Patents
Cylinder for extruderInfo
- 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
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
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.
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)
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.
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)
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 |
-
1984
- 1984-12-26 JP JP59279005A patent/JPS61152425A/en active Pending
Cited By (2)
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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