JPH0244988Y2 - - Google Patents
Info
- Publication number
- JPH0244988Y2 JPH0244988Y2 JP1985121387U JP12138785U JPH0244988Y2 JP H0244988 Y2 JPH0244988 Y2 JP H0244988Y2 JP 1985121387 U JP1985121387 U JP 1985121387U JP 12138785 U JP12138785 U JP 12138785U JP H0244988 Y2 JPH0244988 Y2 JP H0244988Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- screw
- resin
- extrusion molding
- molding machine
- 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.)
- Expired
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
- B29C48/688—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having threads
-
- 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
- B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は高分子材料（以下、単に樹脂という）
の単軸スクリユ式押出成形機に係り、特に、押出
能力向上を目的とした樹脂喰い込み装置に関す
る。[Detailed explanation of the invention] [Industrial application field] This invention is a polymer material (hereinafter simply referred to as resin).
The present invention relates to a single-screw extrusion molding machine, and particularly to a resin biting device for improving extrusion capacity.
従来、単軸スクリユ式押出成形機は、シリンダ
内壁は研摩後ホーニング仕上げしてあり、面粗度
は0.5s程度になつているのが一般である。一方、
スクリユの溝面は硬質クロームメツキが施されて
おり、面粗度は0.3s程度にみがかれている。ホツ
パーから投入された樹脂はスクリユ溝に入り込
み、シリンダ内壁面とスクリユ溝面との摩擦力の
差で押出方向に搬送されるのである。従つて、シ
リンダ内壁面の摩擦力即ち摩擦係数が大きい方が
搬送効率が向上するわけである（もし、シリンダ
内壁面の摩擦が０であると、樹脂はスクリユとと
もに回転するのみで、押出方向へと前進しない）。
しかし、あまり面を粗くすると樹脂が溶融した場
合、シリンダ内面部分に停滞付着して分解につな
がりかねない問題となる。即ち、樹脂がまだ溶融
しない固体の状態と、固体と溶融体とが混じつて
いる状態と、完全に溶融した状態とがあり、それ
ぞれシリンダ内壁面及びスクリユ溝面との摩擦の
条件が異なつてくるのである。
Conventionally, in single-screw extrusion molding machines, the inner wall of the cylinder is polished and honed, and the surface roughness is generally about 0.5s. on the other hand,
The groove surface of the screw is plated with hard chrome, and the surface roughness is polished to about 0.3s. The resin introduced from the hopper enters the screw groove and is transported in the extrusion direction due to the difference in frictional force between the cylinder inner wall surface and the screw groove surface. Therefore, the larger the frictional force, that is, the coefficient of friction, on the inner wall of the cylinder, the higher the conveying efficiency. and not move forward).
However, if the surface is made too rough, there is a problem that when the resin melts, it may stagnate and adhere to the inner surface of the cylinder, leading to decomposition. In other words, there are three states: a solid state where the resin has not yet melted, a state where the solid and molten material are mixed, and a state where the resin is completely melted, and the conditions of friction with the cylinder inner wall surface and the screw groove surface are different for each state. It is.
以上のような従来のスクリユ式押出成形機で押
出能力の向上を望む場合、ほとんどが、スクリユ
の改良に期待をかけてきたのが実状で、今までに
多くの種類のスクリユが実用されてきた。一方、
シリンダ側に関しての押出能力向上の工夫をした
ものとしては、特開昭59−67030号公報・特開昭
59−143614号公報・実開昭58−62623号公報に記
載された押出成形機がある。 When it comes to improving the extrusion capacity of conventional screw type extrusion molding machines such as those mentioned above, the reality is that most people have placed their hopes on improving the screw, and many types of screws have been put into practical use to date. . on the other hand,
Examples of devices that improve the extrusion capacity on the cylinder side include JP-A-59-67030 and JP-A-Sho.
There are extrusion molding machines described in Publication No. 59-143614 and Japanese Utility Model Application Publication No. 58-62623.
前記公報に記載された押出成形機は、押出機の
シリンダの内面に複数条の縦溝を並設したもので
ある。 The extrusion molding machine described in the above publication has a plurality of longitudinal grooves arranged in parallel on the inner surface of the cylinder of the extruder.
前記公報に記載された押出成形機は、樹脂の搬
送速度が増し、搬送効率、搬送力が大きくなり、
安定した押出力を得ることができ優れたものであ
る。
The extrusion molding machine described in the above publication has increased resin conveyance speed, conveyance efficiency, and conveyance force.
This is an excellent product that allows stable extrusion force to be obtained.
ところで、最近の押出機においては、使用され
る樹脂の種類や形状も多くなつてきた。 By the way, in recent extruders, the types and shapes of resins used have increased.
そうすると、樹脂の種類や形状に対応できる縦
溝の設けられた押出機のシリンダが求められるこ
ととなつた。 As a result, there was a need for an extruder cylinder with vertical grooves that could accommodate the type and shape of the resin.
本考案は前記事項に鑑みなされたものであり、
樹脂の種類や形状に対応できる縦溝の設けられた
シリンダを備えたスクリユ式押出成形機とするこ
とを技術的課題とする。 This invention was made in view of the above matters,
The technical problem is to create a screw-type extrusion molding machine equipped with a cylinder equipped with vertical grooves that can be adapted to the type and shape of resin.
本考案は、前記技術的課題を解決するために、
押出成形機のホツパ３直後のシリンダ２に、シリ
ンダ２の軸方向に向けて穿設した長孔１０を設
け、この長孔１０に摩擦駒６を着脱自在に嵌合
し、この摩擦駒６のシリンダ２内に表われる内側
面に、スクリユ１の軸と平行の縦溝８を複数条形
成した摩擦力増大部分を設けたものとした。
In order to solve the above technical problem, the present invention has the following features:
A long hole 10 bored in the axial direction of the cylinder 2 is provided in the cylinder 2 immediately after the hopper 3 of the extrusion molding machine, and a friction piece 6 is removably fitted into this long hole 10. The inner surface of the cylinder 2 is provided with a frictional force increasing portion in which a plurality of vertical grooves 8 parallel to the axis of the screw 1 are formed.
本考案はシリンダ２内壁面の縦溝８により摩擦
力が増え、スクリユ回転当たりの樹脂搬送効率が
増加し、搬送力も大きくなる。また、ホツパ３か
らのシリンダ２内への樹脂の食い込みもよい。
In the present invention, the frictional force is increased by the vertical grooves 8 on the inner wall surface of the cylinder 2, the resin conveying efficiency per screw rotation is increased, and the conveying force is also increased. Further, the resin from the hopper 3 can easily penetrate into the cylinder 2.
そして、本考案は使用される樹脂の種類や形状
等の条件に適合する摩擦駒６、すなわち、前記条
件に適合する形状及び数に形成した縦溝８を設け
た摩擦駒６を選択し、この摩擦駒６を前記長孔１
０に嵌合止着して、シリンダ２を、前記条件に適
合した縦溝８の設けられたシリンダ２とする。 Then, the present invention selects a friction piece 6 that meets the conditions such as the type and shape of the resin used, that is, a friction piece 6 provided with vertical grooves 8 formed in a shape and number that meets the conditions. The friction piece 6 is inserted into the elongated hole 1.
0 to make the cylinder 2 a cylinder 2 provided with a vertical groove 8 that meets the above conditions.
以下、本考案の一実施例を第１図乃至第４図に
基づき説明する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
シリンダ２の基端である入口側に固体樹脂を供
給するホツパ３が設けられているとともに、シリ
ンダ２内にスクリユ１が内挿されている。 A hopper 3 for supplying solid resin is provided on the inlet side, which is the base end of the cylinder 2, and a screw 1 is inserted into the cylinder 2.
そして、シリンダ２の基端である入口側に接近
した部分の周囲４ケ所にシリンダ２の軸方向に向
かう長孔１０が明けてある。この長孔１０に、縦
溝８を施した摩擦駒６が嵌合され、ボルトにてシ
リンダ２に着脱自在に固定されている。この摩擦
駒６はシリンダ２内となる内側面がシリンダ２の
内壁面と同一面を形成してシリンダ２内壁面とな
つており、この部分に前記縦溝８を形成してある
もので、この縦溝８はスクリユ１の軸と平行にな
つており、これにより摩擦力増大部分を形成して
いる。また、摩擦駒６を含めたこの部分は外周か
ら水冷却用のジヤケツト７が着脱自在に取付けら
れ、温度管理されることにより、常に樹脂との摩
擦力が一定となるように工夫してある。 Elongated holes 10 extending in the axial direction of the cylinder 2 are formed at four locations around the base end of the cylinder 2 near the inlet side. A friction piece 6 having a vertical groove 8 is fitted into the elongated hole 10 and is detachably fixed to the cylinder 2 with a bolt. The inner surface of the friction piece 6 that is inside the cylinder 2 forms the same surface as the inner wall surface of the cylinder 2 and serves as the inner wall surface of the cylinder 2, and the vertical groove 8 is formed in this portion. The longitudinal groove 8 is parallel to the axis of the screw 1, thereby forming a friction force increasing portion. Further, a water cooling jacket 7 is removably attached to the outer periphery of this part including the friction piece 6, and the temperature is controlled so that the frictional force with the resin is always constant.
65mmφ、Ｌ／Ｄ＝22の押出成形機においては、
摩擦駒６の数は４ケ所で長さが100mm、幅20mmの
ものが配置できた。摩擦駒６の縦溝８の形状選択
は、樹脂の種類、ダイ５の流動抵抗なども含め
て、実際に押出成形した上で決められた。摩擦駒
６を設けたことで、縦溝８の設けてない従来機と
比較して押出能力は、大体10〜30％の範囲で増加
した。 In an extrusion molding machine with 65mmφ and L/D=22,
The number of friction pieces 6 was 100 mm in length and 20 mm in width and could be placed in four locations. The shape of the longitudinal grooves 8 of the friction piece 6 was determined based on the actual extrusion molding, taking into account the type of resin and the flow resistance of the die 5. By providing the friction pieces 6, the extrusion capacity increased by about 10 to 30% compared to the conventional machine without the vertical grooves 8.
そして、シリンダ２内は入口側から出口側にか
けて、明確な境はないがおおよそ供給部、溶融
部、計量部とに区分されており、供給部におい
て、ホツパ３からの樹脂はスクリユ１の回転によ
り押出方向へと搬送され、この搬送中にシリンダ
２からの加熱とスクリユ１を介して伝えられるモ
ータ仕事とにより予熱され、さらに、溶融部では
スクリユ１の深溝が除々に浅くなつて、予熱され
た樹脂はさらにシリンダ２からの加熱とスクリユ
１の圧縮により溶融され、最後に、溶融された樹
脂は、均一化のために混練されつつ計量部で計量
されつつダイ５へと搬送され、所望形状の成形品
に成形される。 From the inlet side to the outlet side, the inside of the cylinder 2 is roughly divided into a supply section, a melting section, and a measuring section, although there is no clear boundary. It is conveyed in the extrusion direction, and during this conveyance, it is preheated by the heat from the cylinder 2 and the motor work transmitted through the screw 1, and furthermore, in the melting section, the deep groove of the screw 1 gradually becomes shallower, so that it is preheated. The resin is further melted by heating from the cylinder 2 and compression by the screw 1.Finally, the molten resin is kneaded for uniformity and is then conveyed to the die 5 while being measured in a measuring section to form a desired shape. Molded into a molded product.
この過程において、ホツパ３からシリンダ２内
に入り込んだ固形樹脂は、その直後にシリンダ２
の内壁面に縦溝８が形成されている部分に送られ
るが、この部分のシリンダ内壁面の摩擦が縦溝８
で大きくなつているため、樹脂の搬送速度が大き
くなり、溶融部、計量部への樹脂の押出力が大き
く、安定したものとなり、また、ホツパ直下のシ
リンダ２内の樹脂が直ぐに搬送されて無くなるた
め、シリンダ２内へのホツパ３からの樹脂の食い
込みがよく、樹脂の安定供給が行なわれる。 In this process, the solid resin that has entered the cylinder 2 from the hopper 3 immediately enters the cylinder 2.
The cylinder is sent to the part where the vertical groove 8 is formed on the inner wall surface of the cylinder, but the friction on the inner wall surface of the cylinder in this part
Because the hopper is larger, the resin conveyance speed increases, and the extrusion force of the resin to the melting section and metering section becomes large and stable, and the resin in the cylinder 2 directly under the hopper is quickly conveyed and disappears. Therefore, the resin from the hopper 3 is well penetrated into the cylinder 2, and the resin is stably supplied.
ここで、縦溝８の長さは、押出成形機の構造上
の関係からあまり長くはとれないが、大体スクリ
ユ径と同一及至1.5倍位が適当である。 Here, the length of the vertical groove 8 cannot be made very long due to the structure of the extrusion molding machine, but it is appropriate that the length be approximately the same as or 1.5 times the screw diameter.
また、縦溝８の形状は、第４図ａ，ｂ，ｃに示
されるように、例えば三角溝、角溝、或は波溝等
があるが、樹脂の形状、即ち粒状か或は粉体状か
によつて、そして樹脂の機械的性質によつて決め
られるべきである。実際上は、縦溝８の形状の異
なるものを準備し、実際に押出成形してみて選定
するのがよい。 The shape of the vertical groove 8 may be, for example, a triangular groove, a square groove, or a wave groove, as shown in FIG. and the mechanical properties of the resin. In practice, it is better to prepare vertical grooves 8 with different shapes and actually extrude them to make a selection.
本考案は、ホツパ直後のシリンダ２に長孔１０
を穿設し、この長孔１０に摩擦駒６を着脱自在に
嵌合し、この摩擦駒６に縦溝８を形成した摩擦力
増大部分を設けたので、樹脂の種類や形状等の条
件に適合した摩擦駒６を選択し、この摩擦駒６を
シリンダ２の前記長孔１０に嵌着することによ
り、極めて簡単に、前記条件に適合する縦溝８を
設けたシリンダ２を得ることができるものであ
る。また、縦溝８が摩耗したときも、摩擦駒６を
交換することにより、簡単に新しい縦溝８の設け
られたシリンダ２とすることができる。
The present invention has a long hole 10 in the cylinder 2 immediately after the hopper.
A friction piece 6 is removably fitted into this elongated hole 10, and a friction force increasing portion with vertical grooves 8 is provided in the friction piece 6. By selecting a suitable friction piece 6 and fitting this friction piece 6 into the elongated hole 10 of the cylinder 2, a cylinder 2 provided with a vertical groove 8 that meets the above conditions can be obtained very easily. It is something. Further, even when the vertical grooves 8 are worn out, the cylinder 2 can be easily provided with new vertical grooves 8 by replacing the friction pieces 6.
第１図は本考案に基づく押出成形機の一実施例
を示す縦断面図、第２図はその摩擦駒部分の軸直
角断面図、第３図は摩擦駒の斜視図、第４図は縦
溝の形状図である。
１……スクリユ、２……シリンダ、６……摩擦
駒、８……縦溝、１０……長孔。
Fig. 1 is a longitudinal sectional view showing an embodiment of an extrusion molding machine based on the present invention, Fig. 2 is an axis-perpendicular sectional view of the friction piece, Fig. 3 is a perspective view of the friction piece, and Fig. 4 is a vertical groove. FIG. 1... Screw, 2... Cylinder, 6... Friction piece, 8... Vertical groove, 10... Long hole.
Claims (1)
本のスクリユ１を備えた単軸スクリユ式押出成
形機において、ホツパ３直後のシリンダ２に、
シリンダ２の軸方向に向けて穿設した長孔１０
を設け、この長孔１０に摩擦駒６を着脱自在に
嵌合し、この摩擦駒６のシリンダ２内に表われ
る内側面に、スクリユ１の軸と平行の縦溝８を
複数条形成した摩擦力増大部分を設けたことを
特徴とするスクリユ式押出成形機。 (2) 前記縦溝８の長さは、スクリユ径の１乃至
1.5倍としたことを特徴とする実用新案登録請
求の範囲第１項記載のスクリユ式押出成形機。[Scope of claims for utility model registration] (1) 1 in the cylinder 2 which has the hopper 3 on the inlet side.
In a single-screw extrusion molding machine equipped with a screw 1, the cylinder 2 immediately after the hopper 3 has
A long hole 10 drilled in the axial direction of the cylinder 2
A friction piece 6 is removably fitted into the elongated hole 10, and a plurality of vertical grooves 8 parallel to the axis of the screw 1 are formed on the inner surface of the friction piece 6 that appears inside the cylinder 2. A screw type extrusion molding machine characterized by having a force increasing part. (2) The length of the vertical groove 8 is 1 to 1 of the screw diameter.
1. A screw type extrusion molding machine according to claim 1 of the registered utility model, characterized in that the ratio is 1.5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985121387U JPH0244988Y2 (en) | 1985-08-07 | 1985-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985121387U JPH0244988Y2 (en) | 1985-08-07 | 1985-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6230617U JPS6230617U (en) | 1987-02-24 |
| JPH0244988Y2 true JPH0244988Y2 (en) | 1990-11-29 |
Family
ID=31010613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985121387U Expired JPH0244988Y2 (en) | 1985-08-07 | 1985-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244988Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6831172B2 (en) * | 2015-08-07 | 2021-02-17 | 東洋製罐株式会社 | Extruder |
| JP6976034B2 (en) * | 2015-08-07 | 2021-12-01 | 東洋製罐株式会社 | Extruder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5862623U (en) * | 1981-10-22 | 1983-04-27 | 三菱重工業株式会社 | plasticizing equipment |
| JPS5967030A (en) * | 1982-10-06 | 1984-04-16 | Mitsubishi Plastics Ind Ltd | Plastic extrusion molding apparatus |
| JPS59143614A (en) * | 1983-02-07 | 1984-08-17 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of polypropylene board with saw-dust mixed-in |
-
1985
- 1985-08-07 JP JP1985121387U patent/JPH0244988Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6230617U (en) | 1987-02-24 |
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