JPS60214921A - Screw for extruder - Google Patents
Screw for extruderInfo
- Publication number
- JPS60214921A JPS60214921A JP59071535A JP7153584A JPS60214921A JP S60214921 A JPS60214921 A JP S60214921A JP 59071535 A JP59071535 A JP 59071535A JP 7153584 A JP7153584 A JP 7153584A JP S60214921 A JPS60214921 A JP S60214921A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- raw material
- resin raw
- section
- spiral groove
- 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
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 238000004898 kneading Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
-
- 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
-
- 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
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
- B29C48/61—Threads having wavy profiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の分野）
この発明は、回転スクリューの途中に混線効果を高める
混練部を備えた押出機用スクリューに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a screw for an extruder that is provided with a kneading section in the middle of the rotating screw to enhance the crosstalk effect.
（従来技術）
従来スクリューの一部に特別に混線効果を上げるため、
混練部を設けて構成されたものはあった。(Conventional technology) In order to specifically increase the crosstalk effect in a part of the conventional screw,
Some were constructed with a kneading section.
例えば特開昭５２−８５６号に示されているように混線
部のシリンダー及びスクリューを角形にして、スクリュ
ー外面に複数個の突起を設けるもの、あ゛るいは特開昭
５１−１２７１５７号のように、スクリュー軸芯とシリ
ンダ横断面中心を相対的に変位させた部分を設けるもの
等がある。For example, as shown in Japanese Patent Application Laid-Open No. 52-856, the cylinder and screw of the cross-conducting part are made square and a plurality of protrusions are provided on the outer surface of the screw, or as shown in Japanese Patent Application Laid-Open No. 51-127157. In some cases, a portion is provided in which the screw shaft center and the center of the cross section of the cylinder are relatively displaced.
ところがこれら従来の構造では、前者のものはシリンダ
ー及びスクリューの混線部だけ角形に加工しなければな
らず、製造に手間がかかるうえシリンダー周面に複数の
突起を設けているため、不測に突起が折れてしまう欠点
があり、又後者のものでは単にスクリュー軸芯とシリン
ダ軸芯を相対的に変位させるだけであるから それほど
高い混線効果が期待できない欠点があった。However, with these conventional structures, in the former case, only the cross-conducting part of the cylinder and screw must be processed into a square shape, which takes time and effort to manufacture.In addition, since multiple protrusions are provided on the circumference of the cylinder, unexpected protrusions may occur. It has the disadvantage that it can break, and the latter method simply displaces the screw axis and cylinder axis relative to each other, so it has the disadvantage that it cannot be expected to have a very high wiring crosstalk effect.
（発明の目的）
この発明は従来全く無かった簡単な構成であり、製作が
極めて容易でありながら、優れた混練効果の期待できる
押出機用スクリューの提供を目的とする。(Objective of the Invention) The object of the present invention is to provide a screw for an extruder which has a simple structure that has not been seen in the past, is extremely easy to manufacture, and can be expected to have an excellent kneading effect.
〈発明の構成）
この発明に係る押出機用スクリューは一端に原料の投入
口を有し、他端に押出口を有する筒状加熱シリンダの内
部にスクリューを回転可能に挿入し、前記回転スクリュ
ーの途中にはスクリューの山部両側縁を弯曲させて形成
した混線部を設けたことを特徴とする。(Structure of the Invention) A screw for an extruder according to the present invention is rotatably inserted into a cylindrical heating cylinder having a raw material input port at one end and an extrusion port at the other end, and It is characterized by having a cross-conducting part formed by curving both edges of the crest of the screw in the middle.
（発明の効果）
本発明によれば、混線部のスクリュー山部両側縁を弯曲
させるだけあるから構造が簡単で製作が容易であるばか
りでなく、溶融樹脂はスクリューの回転によってその螺
旋溝の外周面で軸芯方向の゛脈動を繰返し受けることに
なり、混線作用が高（、硬質塩化ビニール樹脂等のよう
な樹脂原料でも十分な混練効果が期待できる。(Effects of the Invention) According to the present invention, not only is the structure simple and easy to manufacture since both sides of the screw crest of the cross-contact portion are curved, but also the molten resin is shaped around the outer periphery of the helical groove by the rotation of the screw. Since the surface is subjected to repeated pulsations in the axial direction, the crosstalk effect is high (and a sufficient kneading effect can be expected even with resin raw materials such as hard vinyl chloride resin etc.).
（実施例）
このような特徴を有するこの発明の一実施例を以下図面
に基づいて詳述する。(Embodiment) An embodiment of the present invention having such characteristics will be described in detail below based on the drawings.
第１図において、押出機１は右端に樹脂原料の投入口２
を有し、他端に押出口３を有する加熱シリンダ４と、加
熱シリンダ４の内部に挿入され樹脂原料を投入口２より
押出口３に移送するための回転スクリュー５とから構成
されている。In Fig. 1, the extruder 1 has a resin raw material input port 2 at the right end.
It consists of a heating cylinder 4 having an extrusion port 3 at the other end, and a rotating screw 5 inserted into the heating cylinder 4 for transferring the resin raw material from the input port 2 to the extrusion port 3.
前記加熱シリンダ４は第１ベント孔６と第２ベント孔７
とを有し、外周にはバンドヒータ８を備えている。The heating cylinder 4 has a first vent hole 6 and a second vent hole 7.
It has a band heater 8 on its outer periphery.
そして、回転スクリュー５における第２ベント孔７の投
入口２側位置には混線部９を一体に接続している。A cross-wire section 9 is integrally connected to the second vent hole 7 of the rotary screw 5 at a position on the input port 2 side.
前記混練部９は第２図及び第３図に示すようにスクリュ
ーの山部１０を相隣接するスクリュー山部１０．１０間
の螺旋溝１１の間隔が周方向に交互に広くなった部分α
と狭くなった部分βとが形成されるように蛇行させて構
成している。As shown in FIGS. 2 and 3, the kneading section 9 has portions α in which the intervals between the spiral grooves 11 between adjacent screw crests 10 and 10 are alternately widened in the circumferential direction.
and a narrowed portion β are formed in a meandering manner.
第４図は別の実施例の混線部９であり、この場合はスク
リューの山部１０自身が広１】の部分と中挟の部分とが
周方向に交互に形成されるように、山部１０の両側縁１
０ａ、１０ａを弯曲させたもげであり、その結果螺旋溝
１１の１］を交互に広くなった部分αと狭くなった部分
βを形成している。FIG. 4 shows the cross-conducting portion 9 of another embodiment, in which the crest 10 of the screw is arranged such that wide portions and intermediate portions are alternately formed in the circumferential direction. 10 both side edges 1
0a and 10a are curved, and as a result, the spiral groove 11 forms alternately wide portions α and narrow portions β.
このように構成された押出機は、投入口２に樹脂原料が
投入されると、この樹脂原料は矢印Ｙ方向に回転する回
転スクリュー５による移送作用を受けて、押出口３側へ
と移送される間に加熱シリンダ４により加熱されて溶融
しつつ第１ベント孔６において抜気された後、回転スク
リュー５とともに回転する混線部９の各螺旋溝１１内を
通過する際に、各螺旋溝１１．１１・・・はそれぞれ交
互に巾広部分αと中挟部分βとが形成されているので、
軸芯方向の圧縮伸張脈動を繰返し受けることになる。In the extruder configured as described above, when a resin raw material is inputted into the input port 2, this resin raw material is transferred to the extrusion port 3 side under the transfer action of the rotary screw 5 rotating in the direction of the arrow Y. After being heated and melted by the heating cylinder 4 while being evacuated in the first vent hole 6, each spiral groove 11 is .11... has wide portions α and intermediate portions β alternately formed, so
It is subjected to repeated compression and expansion pulsations in the axial direction.
このため溶融されている樹脂原料は、流れに乱流が生じ
て混線効果が著しく向上し、例えば樹脂原料に炭酸カル
シウムやグラフファイバー等の添加部を混入しても一軸
のスクリューでありながら十分な混線作用が得られる。For this reason, turbulence occurs in the flow of the molten resin raw material, and the crosstalk effect is significantly improved. A crosstalk effect is obtained.
図面はこの考案の一実施例を示し、
第１図は押出機の縦断面図。
第２図は混線部の斜視図。
第３図はその正面図。
第４図はこの発明の他の実施例を示す混線部の斜視図で
ある。
９・・・混練部 １０・・・スクリュー山部１１・・・
螺旋溝
第２図
１Ｍ３図
／
箆４図The drawings show one embodiment of this invention, and FIG. 1 is a longitudinal sectional view of an extruder. FIG. 2 is a perspective view of the crosstalk section. Figure 3 is its front view. FIG. 4 is a perspective view of a crosstalk section showing another embodiment of the invention. 9...Kneading section 10...Screw crest 11...
Spiral groove Fig. 2 1M3 Fig. 4
Claims (1)
筒状加熱シリンダの内部にスクリューを回転可能に挿入
し、前記回転スクリューの途中にはスクリューの山部両
側縁を弯曲さゼて形成した混線部を設けたことを特徴と
する 押出機用スクリュー。[Claims] 1. A screw is rotatably inserted into a cylindrical heating cylinder having a raw material input port at one end and an extrusion port at the other end, and a screw thread is provided in the middle of the rotating screw. 1. A screw for an extruder, characterized in that a cross-conducting portion is formed by curving both side edges of the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59071535A JPS60214921A (en) | 1984-04-09 | 1984-04-09 | Screw for extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59071535A JPS60214921A (en) | 1984-04-09 | 1984-04-09 | Screw for extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60214921A true JPS60214921A (en) | 1985-10-28 |
Family
ID=13463525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59071535A Pending JPS60214921A (en) | 1984-04-09 | 1984-04-09 | Screw for extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60214921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011051101A1 (en) * | 2011-06-16 | 2012-12-20 | Hans Weber Maschinenfabrik Gmbh | extruder screw |
| US8998481B2 (en) | 2012-08-16 | 2015-04-07 | Hans Weber Maschinenfabrik Gmbh | Double screw extruder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5114532A (en) * | 1974-07-23 | 1976-02-05 | Kuroodo Oozamento Erumo | Kukito nenryono kyukiseiseisochi |
-
1984
- 1984-04-09 JP JP59071535A patent/JPS60214921A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5114532A (en) * | 1974-07-23 | 1976-02-05 | Kuroodo Oozamento Erumo | Kukito nenryono kyukiseiseisochi |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011051101A1 (en) * | 2011-06-16 | 2012-12-20 | Hans Weber Maschinenfabrik Gmbh | extruder screw |
| US8998481B2 (en) | 2012-08-16 | 2015-04-07 | Hans Weber Maschinenfabrik Gmbh | Double screw extruder |
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