JPS6111178B2 - - Google Patents
Info
- Publication number
- JPS6111178B2 JPS6111178B2 JP54046346A JP4634679A JPS6111178B2 JP S6111178 B2 JPS6111178 B2 JP S6111178B2 JP 54046346 A JP54046346 A JP 54046346A JP 4634679 A JP4634679 A JP 4634679A JP S6111178 B2 JPS6111178 B2 JP S6111178B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- screw shaft
- extrusion molding
- grooves
- axis
- 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
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000012778 molding material Substances 0.000 description 9
- 238000004898 kneading Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
- B29C48/62—Screws characterised by the shape of the thread channel, e.g. U-shaped
-
- 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
- B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin 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
- B29C48/03—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
- B29C48/595—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw the thread having non-uniform width
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は押出成形機のスクリユー構造に関する
もので、さらに詳細に述べれば押出成形機３のシ
リンダ４内に２本のスクリユー軸本体５を平行に
配設し、スクリユー軸本体５の外周にほぼ全長に
わたつて外鍔２を螺旋状に相対向して突設して外
鍔２間にスクリユー溝１を形成し、相隣接せるス
クリユー溝１のスクリユー軸本体５間の間隔が交
互に広狭となるように相隣接せる一方のスクリユ
ー溝１ａ部分のスクリユー軸本体５ａの軸心６に
対し、他方のスクリユー溝１ｂ部分のスクリユー
軸本体５ｂの軸心７を偏心させて成ることを特徴
とする押出成形機のスクリユー構造に係るもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a screw structure for an extrusion molding machine, and more specifically, two screw shaft bodies 5 are arranged in parallel in the cylinder 4 of an extrusion molding machine 3, and the screw shaft Outer flanges 2 are spirally protruded from the outer periphery of the main body 5 over almost the entire length to form a screw groove 1 between the outer flanges 2. The axis 7 of the screw shaft body 5b of the screw groove 1b portion of the other screw groove 1b is eccentric to the axis 6 of the screw shaft body 5a of the screw groove 1a portion adjacent to each other so that the intervals are alternately wide and narrow. This invention relates to a screw structure of an extrusion molding machine characterized by the following.
従来より合成樹脂の押出成形材料を充分に混
合、混練し、押出成形に供する為に、多種に亘る
押出成形機のスクリユー構造が考案され、且つ実
用されてきている。各スクリユーは、それぞれ特
有の効果を有するが、なおより大きな効果をあげ
る為に色々と工夫されつつあるのが現状である。
本発明も従来のものよりもに混合、混練をより効
率的に達成する為のもので、その目的とするとこ
ろは、スクリユー軸本体の外周に外鍔を相対向し
て突設し、外鍔にて形成されたスクリユー溝のス
クリユー軸本体間の間隔が交互に広狭となるよう
に相隣接せる一方のスクリユー溝部分のスクリユ
ー軸本体の軸心に対し、他方のスクリユー溝部分
のスクリユー軸本体の軸心を偏心させてあるた
め、この２本のスクリユーを回転した時スクリユ
ーの回転運動に伴なう成形材料の層流混合に加え
て乱流混合、並びに剪断混練を助長すると共に成
形材料の相対的位置を交換せしめ、再配置して混
合、混練効果を極めて大きくすることができる押
出成形機のスクリユー機構を提供するにある。 Conventionally, a wide variety of screw structures for extrusion molding machines have been devised and put into practical use in order to sufficiently mix and knead synthetic resin extrusion molding materials and provide them for extrusion molding. Each screw has its own unique effect, but the current situation is that various improvements are being made to achieve even greater effects.
The present invention is also intended to achieve mixing and kneading more efficiently than the conventional ones, and its purpose is to provide outer flanges protruding from the outer periphery of the screw shaft body so as to face each other. The distance between the screw shaft bodies of the screw grooves formed by Since the axes are eccentric, when these two screws are rotated, in addition to the laminar mixing of the molding material accompanying the rotational movement of the screws, turbulent mixing and shear kneading are promoted, and the relative relationship of the molding material is To provide a screw mechanism for an extrusion molding machine that can extremely increase mixing and kneading effects by exchanging target positions and rearranging.
以下本発明を図示実施例に従つて詳述する。第
１図および第２図は本発明に係わるスクリユーＳ
の実施例を例示したものであり、１はスクリユー
溝、２はスクリユー軸本体５の外周にほぼ全長に
わたつて螺旋状に突設した外鍔であり、第１図に
例示した実施例においては相隣接せるスクリユー
溝１において一方のスクリユー溝１ａ部分のスク
リユー軸本体５ａの軸心６に対して他方のスクリ
ユー溝１ｂ部分のスクリユー軸本体５ｂの軸心７
が外鍔２を隔てて交互に偏心している場合であ
り、よつてスクリユーＳの回転運動に伴なて相隣
接せるスクリユー溝１間のスクリユー軸本体５間
におけるクリアランスが狭くなつたり（Ａの位
置）、広くなつたり（Ｂの位置）し、スクリユー
Ｓの半回転ごとに成形材料の圧縮膨張が交互に繰
り返されるのである。従つて成形材料はＡの位置
においては、両スクリユーＳ間で強い剪断歪を受
けて混練され、Ａ，Ｂ，Ａ，Ｂ…の繰り返し運動
によつて成形材料は複雑な位置交換を受けて充分
な混合を達成できるのである。 The present invention will be described in detail below with reference to illustrated embodiments. FIG. 1 and FIG. 2 show the screw S according to the present invention.
1 is an example of the embodiment shown in FIG. In the adjacent screw grooves 1, the axis 6 of the screw shaft body 5a in one screw groove 1a portion is compared with the axis 7 of the screw shaft body 5b in the other screw groove 1b portion.
are alternately eccentric across the outer flange 2, and as a result, as the screw S rotates, the clearance between the screw shaft bodies 5 between adjacent screw grooves 1 becomes narrower (position A). ) and widen (position B), and the compression and expansion of the molding material is alternately repeated every half turn of the screw S. Therefore, at position A, the molding material is kneaded under strong shear strain between both screws S, and by the repeated movements of A, B, A, B, etc., the molding material undergoes a complicated positional exchange and is kneaded sufficiently. It is possible to achieve a good mixture.
第２図に例示した実施例においては、スクリユ
ー溝１が外鍔２を隔てて偏心したものと、偏心し
ていないものとを交互に配した場合で、この場合
でも相隣接しているスクリユー溝１部分のスクリ
ユー軸本体５ａ，５ｂの軸心６，７においては偏
心しているものであり、A′の位置ではスクリユ
ー溝１間のクリアランスが常に狭い状態にあり、
B′の位置ではクリアランスが狭くなつたり、広く
なつたりスクリユーＳの半回転ごとに交互に繰り
返される。成形材料はA′の位置において両スク
リユーＳ間で強い剪断歪を受けて混練され、
A′→B′→A′→B′→と成形材料が運動するに伴な
つて複雑な位置交換を受けて充分な混合を達成で
きる。叙上のように本発明の特長は、２軸スクリ
ユー構造であつて偏心したスクリユー溝１を設け
ることによつて２軸のスクリユー溝１間のクリア
ランスを外鍔２を隔てて交互に変化せしめること
によりスクリユーＳの回転運動に伴なつて成形材
料の複雑な位置交換による混合と剪断混練を極め
て効果的に達成できる点にある。 In the embodiment illustrated in FIG. 2, the screw grooves 1 are arranged alternately with eccentric and non-eccentric screw grooves across the outer flange 2. Even in this case, the screw grooves 1 that are adjacent to each other are The axes 6 and 7 of the screw shaft bodies 5a and 5b are eccentric, and the clearance between the screw grooves 1 is always narrow at the position A'.
At position B', the clearance is alternately narrowed and widened every half turn of the screw S. The molding material is kneaded under strong shear strain between both screws S at position A'.
As the molding material moves from A' to B' to A' to B', sufficient mixing can be achieved through complicated positional exchanges. As mentioned above, the feature of the present invention is that it has a two-axis screw structure, and by providing eccentric screw grooves 1, the clearance between the two screw grooves 1 can be alternately changed across the outer flange 2. This allows for extremely effective mixing and shear kneading of the molding materials through complicated positional exchanges as the screw S rotates.
第１図は本発明のスクリユーの一部分の一実施
例の正面図、第２図は同上の他の実施例の正面図
である。
１，１ａ，１ｂ…スクリユー溝、２…外鍔、３
…押出成形機、４…シリンダ、５…スクリユー軸
本体、６．７…軸心。
FIG. 1 is a front view of one embodiment of a screw portion of the present invention, and FIG. 2 is a front view of another embodiment of the same. 1, 1a, 1b...screw groove, 2...outer tsuba, 3
...Extrusion molding machine, 4...Cylinder, 5...Screw shaft body, 6.7...Shaft center.
Claims (1)
軸本体を平行に配設し、スクリユー軸本体の外周
にほぼ全長にわたつて外鍔を螺旋状に相対向して
突設して外鍔間にスクリユー溝を形成し、相隣接
せるスクリユー溝のスクリユー軸本体間の間隔が
交互に広狭となるように相隣接せる一方のスクリ
ユー溝部分のスクリユー軸本体の軸心に対し、他
方のスクリユー溝部分のスクリユー軸本体の軸心
を偏心させて成ることを特徴とする押出成形機の
スクリユー構造。1. Two screw shaft bodies are arranged in parallel in the cylinder of an extrusion molding machine, and an outer flange is provided spirally facing each other over almost the entire length on the outer periphery of the screw shaft body, and between the outer flanges Screw grooves are formed, and the intervals between the screw shaft bodies of adjacent screw grooves are alternately wide and narrow, so that the axis of the screw shaft bodies of one screw groove portion that is adjacent to each other is A screw structure for an extrusion molding machine characterized by eccentrically centering the axis of the screw shaft body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4634679A JPS55137939A (en) | 1979-04-15 | 1979-04-15 | Screw structure for extrusion molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4634679A JPS55137939A (en) | 1979-04-15 | 1979-04-15 | Screw structure for extrusion molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55137939A JPS55137939A (en) | 1980-10-28 |
| JPS6111178B2 true JPS6111178B2 (en) | 1986-04-01 |
Family
ID=12744572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4634679A Granted JPS55137939A (en) | 1979-04-15 | 1979-04-15 | Screw structure for extrusion molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55137939A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2520765Y2 (en) * | 1989-12-27 | 1996-12-18 | 株式会社フジシール | Label for hanging on bottle container |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4859051B2 (en) * | 2006-11-30 | 2012-01-18 | 不二サッシ株式会社 | Kneading machine |
-
1979
- 1979-04-15 JP JP4634679A patent/JPS55137939A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2520765Y2 (en) * | 1989-12-27 | 1996-12-18 | 株式会社フジシール | Label for hanging on bottle container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55137939A (en) | 1980-10-28 |
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