JPH0741617B2 - Cylinder for raw material supply of plasticizer - Google Patents
Cylinder for raw material supply of plasticizerInfo
- Publication number
- JPH0741617B2 JPH0741617B2 JP61065497A JP6549786A JPH0741617B2 JP H0741617 B2 JPH0741617 B2 JP H0741617B2 JP 61065497 A JP61065497 A JP 61065497A JP 6549786 A JP6549786 A JP 6549786A JP H0741617 B2 JPH0741617 B2 JP H0741617B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- raw material
- groove
- material supply
- screw
- 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 - Lifetime
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
- B29C48/50—Details of extruders
- B29C48/501—Extruder feed section
-
- 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)
- Formation And Processing Of Food Products (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)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はプラスチック、ゴム等の可塑化装置である射出
成形機、食品加工用単軸、押出機などに適用される可塑
化装置の原料供給部シリンダに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention provides a raw material supply for a plasticizer applied to plasticizers such as injection molding machines, food processing single shafts, extruders, etc. This relates to the partial cylinder.
（従来の技術） 第９図に示す従来の可塑化装置の原料供給部シリンダの
構造は下記の２つに大別できる。ここで１はスクリュ、
２はシリンダ、４は加熱ヒータ、５は原料供給穴であ
る。その１つは最も古くから使用されているもので、第
５図、第６図（イ）（ロ）に示す如く、原料供給穴５か
らそれに続くシリンダ2a,2は、全て内面が円形断面をし
ている。(Prior Art) The structure of the raw material supply section cylinder of the conventional plasticizer shown in FIG. 9 can be roughly classified into the following two. Where 1 is a screw,
Reference numeral 2 is a cylinder, 4 is a heater, and 5 is a raw material supply hole. One of them is the oldest one, and as shown in FIGS. 5 and 6 (a) and (b), the cylinders 2a, 2 following the raw material supply hole 5 all have a circular inner surface. is doing.
他の１つは第７図、第８図（イ）（ロ）に示す如く、シ
リンダ内面と原料との間の摩擦力を増大させるために、
原料供給穴部のシリンダ2a内面に凹溝（グループ）３を
加工したものがある。凹溝３はこれに続いて先端へと延
びるシリンダ２の内面まで加工したものもある。The other one is to increase the frictional force between the inner surface of the cylinder and the raw material, as shown in FIG. 7 and FIG.
There is one in which a concave groove (group) 3 is processed on the inner surface of the cylinder 2a of the raw material supply hole. In some cases, the recessed groove 3 is subsequently processed to the inner surface of the cylinder 2 extending to the tip.
最近プラスチック、ゴム等の可塑化装置では、可塑化能
力の増大のため、原料の供給量と、スクリュ内樹脂の昇
圧能力を高める目的で、原料供給口からスクリュ外径比
で２〜5D（スクリュ長さ／スクリュ外径）のスクリュ長
さの区間のシリンダ内面に凹溝３を設けた、いわゆるグ
ルーブドシリンダ2aが用いられる場合が多い。このグル
ーブドシリンダは、シリンダ内面と原料間の摩擦力を増
大させる効果があるため、原料の供給能力を増強し、性
能を高めるために大きな役割を果たしている。Recently, in plasticizers for plastics, rubbers, etc., in order to increase the plasticizing capacity, the raw material supply amount and the screw pressurizing capacity of the resin in the screw are increased. In many cases, a so-called grooved cylinder 2a having a concave groove 3 on the cylinder inner surface in the section of screw length (length / screw outer diameter) is used. Since this grooved cylinder has an effect of increasing the frictional force between the inner surface of the cylinder and the raw material, it plays a major role in enhancing the raw material supply capacity and enhancing the performance.
しかしながらこのグルーブドシリンダを用いた場合、下
記の２つの問題点があった。However, the use of this grooved cylinder has the following two problems.
（１） 原料供給口をスクリュフライトがスクリュ１回
転ごとに通過するに伴い、スクリュ先端での可塑化量、
すなわち吐出量の変動や、スクリュ駆動トルクの変動が
生じる場合があった。(1) As the screw flight passes through the raw material supply port for each rotation of the screw, the plasticization amount at the screw tip,
That is, the discharge amount may fluctuate and the screw driving torque may fluctuate.
（２） グルーブドシリンダを用いることにより、粒子
状原料の圧力は、スクリュ長手方向に急激に増大する
が、このときシリンダの内面に設けた凹溝３内の樹脂
は、この急激な長手方向の逆圧力勾配によって原料供給
穴５方向、すなわち樹脂の進むスクリュ先端方向と逆の
方向へと押し戻される逆流現象が生ずる場合があった。
この逆流現象が生じると、可塑化能力（吐出能力）は急
激に大きく変動する。またこの時スクリュの駆動トルク
も大幅に変動する。(2) By using the grooved cylinder, the pressure of the particulate raw material sharply increases in the screw longitudinal direction, but at this time, the resin in the concave groove 3 provided on the inner surface of the cylinder becomes The reverse pressure gradient may cause a backflow phenomenon in which the material is pushed back in the direction of the material supply hole 5, that is, in the direction opposite to the screw tip direction in which the resin advances.
When this backflow phenomenon occurs, the plasticizing capacity (discharging capacity) changes drastically and greatly. At this time, the driving torque of the screw also fluctuates significantly.
（発明が解決しようとする問題点） 本発明は、軸方向で先端部分と後方の原料供給部でシリ
ンダ内面に溝形状を変えることにより、シリンダにおけ
る溝内の樹脂の逆流を防ぎ、可塑化能力、スクリュ駆動
トルクの変動を抑制できる可塑化装置の原料供給部シリ
ンダを提供しようとするものである。(Problems to be Solved by the Invention) The present invention prevents the reverse flow of the resin in the groove in the cylinder by changing the groove shape on the inner surface of the cylinder at the tip portion and the rear material supply portion in the axial direction, and the plasticizing ability. It is an object of the present invention to provide a raw material supply section cylinder of a plasticizing device capable of suppressing fluctuations in screw driving torque.
（問題点を解決するための手段） このため本発明は、原料供給部シリンダに接続したグル
ーブドシリンダの内面に凹溝を形成し、同後方の原料供
給部シリンダを、前記グルーブドシリンダの内面の溝に
比べて小さい溝幅か、溝深さのシリンダとするか、又は
溝を持たない円形断面シリンダとしてなるもので、これ
を問題点解決のための手段とするものである。(Means for Solving Problems) Therefore, according to the present invention, a groove is formed on the inner surface of the grooved cylinder connected to the raw material supply section cylinder, and the raw material supply section cylinder at the rear side is formed on the inner surface of the grooved cylinder. The groove width is smaller than that of the groove, the groove depth is a cylinder, or the cylinder is a circular cross-section cylinder without a groove, and this is a means for solving the problem.
（作用） 本発明は、軸方向で先端部分と、後方の原料供給部での
シリンダ内面の溝の形状を変えてなるもので、グルーブ
ドシリンダ後方の原料供給部シリンダの溝幅、溝深さ
が、前記グルーブドシリンダの溝に比べて小さいか、又
は溝を有しない構造とすることにより、シリンダ側の溝
内の樹脂の逆流を防ぎ、可塑化能力、スクリュ駆動トル
クの変動を抑制することができる。(Operation) In the present invention, the shape of the groove at the tip end portion in the axial direction and the groove on the inner surface of the cylinder at the rear material supply portion is changed, and the groove width and groove depth of the material supply cylinder at the rear of the grooved cylinder are changed. However, by making the structure smaller than the groove of the grooved cylinder or having no groove, it is possible to prevent the reverse flow of the resin in the groove on the cylinder side and suppress the fluctuation of the plasticizing ability and the screw driving torque. You can
（実施例） 以下本発明を図面の実施例について説明すると、第１図
〜第４図は本発明の１実施例であるプラスチック用押出
機を示し、第１図に示す如く原料供給穴５よりも長い区
間を持つ原料供給部シリンダ2a−１と、これに続いて延
びるシリンダ内面に凹溝3bを持つグルーブドシリンダ2a
−２を組み合せた構造のシリンダを有する可塑化装置で
ある。(Embodiment) The present invention will be described below with reference to the embodiments of the drawings. FIGS. 1 to 4 show a plastic extruder which is one embodiment of the present invention. As shown in FIG. Raw material supply section cylinder 2a-1 having a long section, and a grooved cylinder 2a having a concave groove 3b on the inner surface of the cylinder that follows this cylinder
2 is a plasticizing device having a cylinder with a combination of -2.
そして供給穴部シリンダ2a−１の内面形状は、第３図に
示す如く、円形断面か、なめらかな曲線断面形状、或は
第４図の如き浅いか、又は幅の狭い凹溝3aを有してい
る。またグルーブドシリンダ2a−２は第２図に示す如
く、凹溝3bは幅が広く、又は深い溝形状となっている。The inner surface of the supply hole cylinder 2a-1 has a circular cross section, a smooth curved cross section as shown in FIG. 3, or a shallow or narrow groove 3a as shown in FIG. ing. In the grooved cylinder 2a-2, as shown in FIG. 2, the concave groove 3b has a wide width or a deep groove shape.
さて原料供給部シリンダ2a−１の内面は、原料との摩擦
力が比較的小さい形状としてあるため、スクリュ１の回
転角度、即ち原料供給穴５とフライト頂部との相対的位
置の変化に伴う原料とシリンダ内面間に作用する摩擦力
の変動は小さいので、スクリュ先端側での原料の供給、
送り能力、あるいはスクリュ駆動トルクに影響すること
はない。従って原料供給部の原料とシリンダ内面間摩擦
力を小さく抑えることにより、スクリュの吐出量変動、
スクリュ駆動力を小さくすることが可能となる。Since the inner surface of the raw material supply cylinder 2a-1 has a shape in which the frictional force with the raw material is relatively small, the raw material is changed in accordance with the rotation angle of the screw 1, that is, the relative position between the raw material supply hole 5 and the flight top. Since the fluctuation of the frictional force acting between the inner surface of the cylinder and the inner surface of the cylinder is small, supply of raw material at the screw tip side,
It does not affect the feed capacity or the screw drive torque. Therefore, by suppressing the frictional force between the raw material in the raw material supply section and the inner surface of the cylinder to be small, fluctuations in the discharge amount of the screw,
It is possible to reduce the screw driving force.
また原料供給部シリンダ2a−１の内面よりも、これに続
いて軸方向に延びる部分のグルーブドシリンダ2a−２内
面の凹溝3bの深さは、深いか、溝幅が広いために、この
シリンダ2a−２内面の凹溝3b内の樹脂が、スクリュ先端
方向での圧力上昇に伴って原料供給穴へと向って逆流し
ようとしても、深いか幅の広い凹溝3b部分より、浅い
か、幅の狭い凹溝3a部分（原料供給穴部）へと流れるこ
ととなるので、逆流は生じにくくなる。Further, the depth of the groove 3b on the inner surface of the grooved cylinder 2a-2 in the portion extending in the axial direction subsequent to the inner surface of the raw material supply section cylinder 2a-1 is deep or wide, Even if the resin in the concave groove 3b on the inner surface of the cylinder 2a-2 tries to flow backward toward the raw material supply hole due to the pressure increase in the screw tip direction, it is shallower than the deep or wide concave groove 3b portion. Since it flows to the narrow groove 3a (raw material supply hole), backflow is less likely to occur.
（発明の効果） 軸方向で先端部分と、後方の原料供給部でのシリンダ内
面の溝の形状を変えてなるもので、グルーブドシリンダ
後方の原料供給部シリンダの溝幅、溝深さが、前記グル
ーブドシリンダの溝に比べて小さいか、又は溝を有しな
い構造とすることにより、シリンダ側の溝内の樹脂の逆
流を防ぎ、可塑化能力、スクリュ駆動トルクの変動を抑
制することができる。(Effects of the Invention) The shape of the groove on the inner surface of the cylinder at the tip end portion and the rear material supply section in the axial direction is changed, and the groove width and groove depth of the material supply section cylinder at the rear of the grooved cylinder are By making the structure smaller than the groove of the grooved cylinder or having no groove, it is possible to prevent the reverse flow of the resin in the groove on the cylinder side and suppress the fluctuation of the plasticizing ability and the screw driving torque. .
第１図は本発明の実施例を示す押出機の側断面図、第２
図は第１図のII〜II断面図、第３図及び第４図は夫々異
なる実施例の第１図のＩ〜Ｉ断面図、第５図は従来の原
料供給部シリンダ内面が円形である押出機の側断面図、
第６図（イ）（ロ）は夫々第５図のＩ′〜Ｉ′断面図及
びII′〜II′断面図、第７図は他の従来例として原料供
給部シリンダ内面に凹溝を持つグルーブドシリンダを持
つ押出機の側断面図、第８図（イ）（ロ）は第７図の
Ｉ″〜Ｉ″断面図とII″〜II″断面図、第９図は従来の
プラスチック可塑化装置の一般例としての押出機の側断
面図である。 図の主要部分の説明 １……スクリュ ２……シリンダ 2a−１……供給穴部シリンダ 2a−２……グルーブドシリンダ 3a……凹溝 3b……凹溝 ５……原料供給穴FIG. 1 is a side sectional view of an extruder showing an embodiment of the present invention, FIG.
1 is a sectional view taken along line II-II in FIG. 1, FIG. 3 and FIG. 4 are sectional views taken along line I-I in FIG. 1 of different embodiments, and FIG. Side sectional view of extruder,
FIGS. 6 (a) and 6 (b) are sectional views taken along the lines I'-I 'and II'-II' of FIG. 5, respectively, and FIG. 7 shows another conventional example in which a groove is provided on the inner surface of the raw material supply section cylinder. A side sectional view of an extruder having a grooved cylinder, FIGS. 8 (a) and (b) are sectional views taken along line I ″ -I ″ and II ″ -II ″ of FIG. 7, and FIG. It is a side sectional view of an extruder as a general example of a oxidization device. Description of main parts of the figure 1 …… Screw 2 …… Cylinder 2a-1 …… Supply hole cylinder 2a-2 …… Grooved cylinder 3a …… Recessed groove 3b …… Recessed groove 5 …… Raw material supply hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 後藤 幸男 愛知県名古屋市中村区岩塚町字高道１番地 三菱重工業株式会社名古屋機器製作所内 (72)発明者 村井 淳 愛知県名古屋市中村区岩塚町字九反所60番 地の１ 中菱エンジニアリング株式会社内 (56)参考文献 特開 昭60−250931（ＪＰ，Ａ) 特開 昭59−67030（ＪＰ，Ａ) 特開 昭50−145467（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Goto No. 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Nagoya Machinery Works (72) Inventor Jun Murai Iwatsuka-cho, Nakamura-ku, Aichi Prefecture 1 at 60 Kujitansho Nakabishi Engineering Co., Ltd. (56) Reference JP-A-60-250931 (JP, A) JP-A-59-67030 (JP, A) JP-A-50-145467 (JP , A)
Claims (1)
シリンダの内面に凹溝を形成し、同後方の原料供給部シ
リンダを、前記グルーブドシリンダ内面の溝に比べて小
さい溝幅か、溝深さのシリンダとするか、又は溝を持た
ない円形断面シリンダとしたことを特徴とする可塑化装
置の原料供給部シリンダ。1. A groove is formed on the inner surface of a grooved cylinder connected to a raw material supply cylinder, and the rear raw material supply cylinder is provided with a groove width or depth smaller than that of the groove on the inner surface of the grooved cylinder. Cylinder having a circular cross section with no groove or a cylinder having a circular cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61065497A JPH0741617B2 (en) | 1986-03-24 | 1986-03-24 | Cylinder for raw material supply of plasticizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61065497A JPH0741617B2 (en) | 1986-03-24 | 1986-03-24 | Cylinder for raw material supply of plasticizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62221519A JPS62221519A (en) | 1987-09-29 |
| JPH0741617B2 true JPH0741617B2 (en) | 1995-05-10 |
Family
ID=13288785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61065497A Expired - Lifetime JPH0741617B2 (en) | 1986-03-24 | 1986-03-24 | Cylinder for raw material supply of plasticizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741617B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448227A (en) * | 2012-05-29 | 2013-12-18 | 张家港市贝尔机械有限公司 | Feed cylinder of single-screw extruding machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226771B2 (en) * | 1974-05-16 | 1977-07-15 | ||
| JPS5967030A (en) * | 1982-10-06 | 1984-04-16 | Mitsubishi Plastics Ind Ltd | Plastic extrusion molding apparatus |
| JPS60250931A (en) * | 1984-05-29 | 1985-12-11 | Mitsui Petrochem Ind Ltd | Screw extruder for super-high molecular polyethylene powder extrusion molding |
-
1986
- 1986-03-24 JP JP61065497A patent/JPH0741617B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62221519A (en) | 1987-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3486194A (en) | Extruder | |
| US5004352A (en) | Plasticizing screw | |
| US5370456A (en) | Continuous kneading apparatus provided with rotatable kneading members and fixed kneading members | |
| JPH07314529A (en) | Extruder | |
| JPH04111418U (en) | twin screw extruder | |
| JPH0741617B2 (en) | Cylinder for raw material supply of plasticizer | |
| US5302106A (en) | Double-worm extruder with polygonal-disk kneader | |
| US4015833A (en) | Extruder screw | |
| JP3499059B2 (en) | Extruder screw | |
| US20190134868A1 (en) | Screw for extrusion molding machine and injection molding machine | |
| JPH10225967A (en) | Plasticized screw | |
| US6033205A (en) | Reciprocating screw for an injection molding machine | |
| JP4083183B2 (en) | Screw for kneading extruder | |
| JPH0438980Y2 (en) | ||
| JP2986702B2 (en) | Screw for plasticizing apparatus and plasticizing method | |
| JPS601168B2 (en) | material feeding device | |
| US5735599A (en) | Screw for molding machine that prevents a wrapping phenomenon | |
| JPH0448611B2 (en) | ||
| JPS62284718A (en) | Screw for molder | |
| JP3731954B2 (en) | Screw extruder | |
| JPH047688B2 (en) | ||
| JPH029945Y2 (en) | ||
| JPS62204918A (en) | Plasticization of plastic, rubber or the like and similar device therefor | |
| JPH0627381Y2 (en) | Extruder | |
| JPS5967028A (en) | Highly kneading screw |