JPH0517224Y2 - - Google Patents
Info
- Publication number
- JPH0517224Y2 JPH0517224Y2 JP1986198951U JP19895186U JPH0517224Y2 JP H0517224 Y2 JPH0517224 Y2 JP H0517224Y2 JP 1986198951 U JP1986198951 U JP 1986198951U JP 19895186 U JP19895186 U JP 19895186U JP H0517224 Y2 JPH0517224 Y2 JP H0517224Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical screw
- screw
- cylinder
- gas injection
- external cylinder
- 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
- 238000001125 extrusion Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000004898 kneading Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 238000001816 cooling Methods 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C48/445—Coaxially arranged screws, i.e. one within the other
-
- 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
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は複数の合成樹脂材料を注入ガスと共に
混練し押し出すためのガス注入式混練押出成形装
置に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a gas injection type kneading and extrusion molding apparatus for kneading and extruding a plurality of synthetic resin materials together with an injection gas.
（従来技術）
従来此の種のガス注入式混練押出装置としては
第４図に示すようにシリンダー１の後部に形成し
た混練物質供給開口２内に混練すべき複数の材料
をホツパーを介して投入し、この材料をシリンダ
ー１とこのシリンダー１内に挿入したその外周に
螺旋凹溝を有するスクリユー４間で混練してシリ
ンダー１の軸方向に送り、その途中でこの材料内
にガス注入口８より例えば炭化水素ガスを注入
し、材料を混練しながら発泡せしめ押出機構５か
ら押し出すようにしているが、このような従来の
装置ではガス注入によつて体積の増加した材料を
出口から押し出すための圧力を得るため材料の冷
却ゾーンを長く必要としシリンダー１の長さがそ
の直径の略47倍程度必要であり、専有スペースが
大きくなる欠点があつた。(Prior Art) Conventionally, in this type of gas injection type kneading extrusion device, a plurality of materials to be kneaded are fed into a kneaded material supply opening 2 formed at the rear of a cylinder 1 via a hopper, as shown in FIG. Then, this material is kneaded between the cylinder 1 and a screw 4 inserted into the cylinder 1 and having a spiral concave groove on its outer periphery, and fed in the axial direction of the cylinder 1. For example, hydrocarbon gas is injected, the material is foamed while being kneaded, and then extruded from the extrusion mechanism 5. However, in such conventional devices, the pressure to extrude the material whose volume has increased due to gas injection from the outlet is increased. In order to obtain this, a long cooling zone for the material is required, and the length of the cylinder 1 must be approximately 47 times its diameter, which has the disadvantage of requiring a large amount of space.
（考案の目的）
本考案の目的は上記のような欠点を除去し、専
有スペースを小さくしたガス注入式混練押出成形
装置を得るにある。(Purpose of the invention) The object of the invention is to eliminate the above-mentioned drawbacks and to obtain a gas injection type kneading and extrusion molding apparatus that requires a small space.
（考案の構成）
本考案の混練押出成形装置は外部シリンダー
と、この外部シリンダーに形成したガス注入孔
と、前記外部シリンダー内に同軸状に回転自在に
嵌合した、螺旋突条をその外周面上に有する筒状
スクリユーと、前記筒状スクリユー内に同軸状に
回転自在に嵌合した、前記筒状スクリユーの螺旋
突条とは逆向きの螺旋突条をその外周面上に有す
る内部スクリユーと、前記筒状スクリユー及び内
部スクリユーを互いに反対方向に回転せしめる回
転駆動機構と、前記筒状スクリユー及び内部スク
リユーの後端及び前端に夫々位置するよう前記外
部シリンダーに設けた、混練物質供給開口及び押
出成形機構とより成り、前記ガス注入孔と前記押
出成形機構間の長さが前記ガス注入孔と前記混練
物質供給開口間の長さより十分に長く、前記筒状
スクリユーはこれに形成される螺旋凹溝に沿つて
順次に所定の角度づつ進んだ位置に互いに分離し
た多数の貫通開口を有することを特徴とする。(Structure of the invention) The kneading extrusion molding apparatus of the invention includes an external cylinder, a gas injection hole formed in the external cylinder, and a spiral protrusion coaxially and rotatably fitted into the external cylinder on its outer peripheral surface. a cylindrical screw disposed on the cylindrical screw; and an internal screw having a helical protrusion on its outer peripheral surface that is coaxially rotatably fitted into the cylindrical screw and has a helical protrusion in the opposite direction to the helical protrusion of the cylindrical screw. , a rotational drive mechanism for rotating the cylindrical screw and the internal screw in mutually opposite directions, and a kneading material supply opening and an extruder provided in the external cylinder so as to be located at the rear and front ends of the cylindrical screw and the internal screw, respectively. a forming mechanism, the length between the gas injection hole and the extrusion forming mechanism is sufficiently longer than the length between the gas injection hole and the kneaded material supply opening, and the cylindrical screw has a spiral recess formed therein. It is characterized by having a large number of through openings separated from each other at positions sequentially advanced by a predetermined angle along the groove.
（考案の実施例） 以下図面によつて本考案の実施例を説明する。(Example of idea) Embodiments of the present invention will be described below with reference to the drawings.
第１図において１は架台（図示せず）上に水平
に設けたシリンダー、２はシリンダー１の後部に
形成した混練物質供給開口、３はホツパー、５は
シリンダー１の先端に設けた押出成形機構、６は
水冷リング、７はシリンダー１の外周面に設けた
バンドヒーター、８はシリンダー１の上側壁に形
成した炭化水素ガス等のガス注入孔を示す。 In Fig. 1, 1 is a cylinder installed horizontally on a pedestal (not shown), 2 is a kneaded material supply opening formed at the rear of cylinder 1, 3 is a hopper, and 5 is an extrusion molding mechanism installed at the tip of cylinder 1. , 6 is a water cooling ring, 7 is a band heater provided on the outer peripheral surface of the cylinder 1, and 8 is a gas injection hole for hydrocarbon gas or the like formed in the upper wall of the cylinder 1.
９はシリンダー１内に設けた筒状シリンダーで
この筒状シリンダー９は第２図及び第３図に示す
ように、前記シリンダー１の内径より小さい管体
１０の基部を除く外周面上に、全体の外径が前記
シリンダー１の内径と適合するよう、２本の螺旋
突条１１Ａ，１１Ｂを互いに周方向に180°異なる
位置に形成して成り、従つて２本の螺旋凹溝１２
Ａ，１２Ｂを有して成るものである。この筒条ス
クリユー９には螺旋凹溝１２Ａ，１２Ｂの各々に
沿つて、順次に所定の回動角度づつ進んだ位置に
互いに分離した状態で各々大略平行四辺形の貫通
開口１３Ａ，１３Ａ及び１３Ｂ，１３Ｂが形成さ
れている。そして第３図からも明らかなように、
一方の螺旋凹溝１２Ａの貫通開口１３Ａの各々は
他方の螺旋凹溝１２Ｂの貫通開口１３Ｂの各々と
互いに周方向に180°異なつた位置に位置される。
斯かる筒状スクリユー９は前記シリンダー１内に
同軸状に回転自在に嵌挿されている。 Reference numeral 9 denotes a cylindrical cylinder provided within the cylinder 1. As shown in FIGS. The two spiral grooves 11A and 11B are formed at positions 180° different from each other in the circumferential direction so that the outer diameter of the grooves 12 matches the inner diameter of the cylinder 1.
A, 12B. The cylindrical screw 9 has approximately parallelogram-shaped through openings 13A, 13A and 13B, which are separated from each other along each of the spiral concave grooves 12A and 12B, and are spaced apart from each other at positions that have progressed sequentially by a predetermined rotation angle. 13B is formed. And as is clear from Figure 3,
Each of the through openings 13A of one spiral groove 12A is located at a position 180° different from each other in the circumferential direction from each of the through openings 13B of the other spiral groove 12B.
The cylindrical screw 9 is coaxially and rotatably inserted into the cylinder 1.
筒状スクリユー９内には更に、軸体１４の基部
を除く外周面上に、全体の外径が前記筒状スクリ
ユー９の内径と適合する螺旋突条１５を形成して
成る内部スクリユー１６が同軸状に回転自在に嵌
挿されている。この内部スクリユー１６の螺旋突
条１５は、前記筒条スクリユー９の螺旋突条１１
Ａ，１１Ｂとは逆の旋回方向のものである。そし
て前記シリンダー１の後端に続くギヤボツクス１
７内には、前記筒状スクリユー９及び内部スクリ
ユー１６による送り方向が前方（図で左方）とな
るよう、前記筒状スクリユー９の管体１０の基部
並びに内部スクリユー１６の軸体１４の基部を互
いに逆方向に駆動する駆動ギヤ機構（図示せず）
が設けられている。１８は前記内部スクリユー１
６の前端に固定して設けた樹脂とガスとの混合冷
却部であつて、その外周面とシリンダー１の前端
部分内周面及び筒状スクリユー９の前端開口との
間に押出通路１９を形成する。 Coaxially within the cylindrical screw 9 is an internal screw 16 formed with a helical protrusion 15 on the outer circumferential surface of the shaft body 14 excluding the base thereof, the overall outer diameter of which matches the inner diameter of the cylindrical screw 9. It is rotatably inserted in the shape. The helical protrusion 15 of this internal screw 16 is similar to the helical protrusion 11 of the cylindrical screw 9.
The turning direction is opposite to that of A and 11B. and a gearbox 1 following the rear end of the cylinder 1.
7 includes a base of the tubular body 10 of the cylindrical screw 9 and a base of the shaft 14 of the internal screw 16 so that the feeding direction by the cylindrical screw 9 and the internal screw 16 is forward (to the left in the figure). A drive gear mechanism (not shown) that drives the
is provided. 18 is the internal screw 1
A mixing cooling section for resin and gas fixedly provided at the front end of the cylinder 6, which forms an extrusion passage 19 between its outer circumferential surface, the inner circumferential surface of the front end portion of the cylinder 1, and the front end opening of the cylindrical screw 9. do.
本考案ガス注入式混練押出成形装置は以上の如
き構成であるから、駆動ギヤ機構を附勢せしめて
筒状スクリユー９及び内部スクリユー１６を互い
に反対方向に回転せしめ、ホツパー３より混練物
質供給開口２を介して筒状スクリユー９上に混練
すべきペレツト状又は粉末状樹脂を落下供給せし
めると、筒状スクリユー９の外部及び内部が貫通
開口１３Ａ，１３Ｂにより互いに連通しているた
め、供給された樹脂は筒状スクリユー９及び内部
スクリユー１６によつて前方に送られと共にバン
ドヒーター７により加熱されて溶融する。 Since the gas injection type kneading extrusion molding apparatus of the present invention has the above-mentioned configuration, the drive gear mechanism is energized to rotate the cylindrical screw 9 and the internal screw 16 in opposite directions, and the kneaded material supply opening 2 from the hopper 3. When the pellet or powdered resin to be kneaded is dropped and fed onto the cylindrical screw 9 through the cylindrical screw 9, the supplied resin is is sent forward by the cylindrical screw 9 and the internal screw 16, and is heated by the band heater 7 and melted.
然るに前記筒状スクリユー９には樹脂の移動路
となる螺旋凹溝１２Ａ，１２Ｂに沿つて多数の貫
通開口１３Ａ，１３Ｂが形成されているため、筒
状スクリユー９の外部を移動して来た樹脂の一部
が分割され、貫通開口１３Ａ，１３Ｂを通過して
筒状スクリユー９内に進入すると共に、筒状スク
リユー９の内部を移動して来た樹脂の一部が外部
に進出し、夫々貫通開口１３Ａ，１３Ｂを通過し
なかつた樹脂と合流することとなる。而も筒状ス
クリユー９と内部スクリユー１６とは互いに反対
方向に回転しているため、前記貫通開口１３Ａ，
１３Ｂを通過した樹脂はそれ迄と反対方向に回転
するスクリユー９又は１６により送られることゝ
なる。そして以上のことが順次に繰り返し行わ
れ、この結果、スクリユー９，１６の送りによる
混練作用に加えて非常に高い混練が達成される。 However, since the cylindrical screw 9 is formed with a large number of through openings 13A and 13B along the spiral grooves 12A and 12B, which serve as resin movement paths, the resin that has moved outside the cylindrical screw 9 is removed. A part of the resin is divided and enters the cylindrical screw 9 through the through openings 13A and 13B, and a part of the resin that has moved inside the cylindrical screw 9 advances to the outside and passes through the respective through openings 13A and 13B. This will merge with the resin that has not passed through the openings 13A and 13B. Moreover, since the cylindrical screw 9 and the internal screw 16 rotate in opposite directions, the through openings 13A,
The resin that has passed through 13B is sent by screw 9 or 16, which rotates in the opposite direction. The above steps are repeated in sequence, and as a result, a very high level of kneading is achieved in addition to the kneading action by the feed of the screws 9 and 16.
（考案の効果）
以上のようにして両スクリユー９，１６により
送られた樹脂は押出成形機構５から押し出される
が、本考案装置では樹脂の混練、ガスとの混練が
内外のスクリユー９，１６でなされ、その流路が
筒状スクリユー９の貫通開口１３Ａ，１３Ｂを介
して形成されるため実質上増大し、従つてシリン
ダー１の長さをその直径の略29倍に減少出来、そ
の専有スペースを大幅に小さく出来る大きな利益
がある。(Effect of the invention) The resin sent by both screws 9 and 16 as described above is extruded from the extrusion molding mechanism 5, but in the device of the present invention, the resin is kneaded and mixed with gas by the inner and outer screws 9 and 16. The length of the cylinder 1 can be reduced to about 29 times its diameter, saving space. There are huge benefits that can be made significantly smaller.
第１図は本考案ガス注入式混練押出成形装置の
説明用断面図、第２図及び第３図は夫々本考案に
おける筒状スクリユーの部分破断側面図及び断面
図、第４図は従来のガス注入式混練押出装置の説
明用断面図である。
１……シリンダー、２……混練物質供給開口、
３……ホツパー、４……押出開口機構、５……押
出成形機構、６……冷却リング、７……バンドヒ
ーター、８……ガス注入孔、９……筒状シリンダ
ー、１０……管体、１１Ａ，１１Ｂ，１５……螺
旋突条、１２Ａ，１２Ｂ……螺旋凹溝、１３Ａ，
１３Ｂ……貫通開口、１４……軸体、１６……内
部スクリユー、１７……ギヤボツクス、１８……
樹脂とガスとの混合冷却部、１９……押出通路。
Fig. 1 is an explanatory sectional view of the gas injection type kneading extrusion molding apparatus of the present invention, Figs. 2 and 3 are a partially broken side view and a sectional view of the cylindrical screw of the invention, respectively, and Fig. 4 is a conventional gas injection type kneading extrusion molding device. It is an explanatory sectional view of an injection type kneading extrusion device. 1... Cylinder, 2... Kneading substance supply opening,
3... Hopper, 4... Extrusion opening mechanism, 5... Extrusion molding mechanism, 6... Cooling ring, 7... Band heater, 8... Gas injection hole, 9... Cylindrical cylinder, 10... Tube body , 11A, 11B, 15...Spiral protrusion, 12A, 12B...Spiral groove, 13A,
13B... Through opening, 14... Shaft body, 16... Internal screw, 17... Gear box, 18...
Mixing cooling section for resin and gas, 19...extrusion passage.
Claims (1)
したガス注入孔と、前記外部シリンダー内に同軸
状に回転自在に嵌合した、螺旋突条をその外周面
上に有する筒状スクリユーと、前記筒状スクリユ
ー内に同軸状に回転自在に嵌合した、前記筒状ス
クリユーの螺旋突条とは逆向きの螺旋突条をその
外周面上に有する内部スクリユーと、前記筒状ス
クリユー及び内部スクリユーを互いに反対方向に
回転せしめる回転駆動機構と、前記筒状スクリユ
ー及び内部スクリユーの後端及び前端に夫々位置
するよう前記外部シリンダーに設けた、混練物質
供給開口及び押出成形機構とより成り、前記ガス
注入孔と前記押出成形機構間の長さが前記ガス注
入孔と前記混練物質供給開口間の長さより十分に
長く、前記筒状スクリユーはこれに形成される螺
旋凹溝に沿つて順次に所定の角度づつ進んだ位置
に互いに分離した多数の貫通開口を有することを
特徴とするガス注入式混練押出成形装置。 an external cylinder, a gas injection hole formed in the external cylinder, a cylindrical screw that is coaxially and rotatably fitted into the external cylinder and has a spiral protrusion on its outer peripheral surface, and an inside of the cylindrical screw. an internal screw having a helical protrusion on its outer peripheral surface that is rotatably fitted coaxially with the helical protrusion in a direction opposite to that of the helical protrusion of the cylindrical screw; The kneading material supply opening and the extrusion molding mechanism are provided in the external cylinder so as to be located at the rear and front ends of the cylindrical screw and the internal screw, respectively. The length between the forming mechanisms is sufficiently longer than the length between the gas injection hole and the kneaded material supply opening, and the cylindrical screw is positioned at a position where the cylindrical screw sequentially advances at a predetermined angle at a time along a spiral groove formed therein. A gas injection kneading and extrusion molding apparatus characterized in that the apparatus has a plurality of through openings separated from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986198951U JPH0517224Y2 (en) | 1986-12-27 | 1986-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986198951U JPH0517224Y2 (en) | 1986-12-27 | 1986-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63106626U JPS63106626U (en) | 1988-07-09 |
| JPH0517224Y2 true JPH0517224Y2 (en) | 1993-05-10 |
Family
ID=31160121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986198951U Expired - Lifetime JPH0517224Y2 (en) | 1986-12-27 | 1986-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517224Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863745B (en) * | 2017-04-12 | 2018-09-25 | 许梦艳 | A kind of pressure homogenizing adjustable speed screw extruder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52136271A (en) * | 1976-05-10 | 1977-11-14 | Berstorff Gmbh Masch Hermann | Process for manufacture of thin tube using polystyrene foam |
| JPS541373A (en) * | 1977-06-02 | 1979-01-08 | Nakatani Machinery | Kneading extrusion apparatus |
-
1986
- 1986-12-27 JP JP1986198951U patent/JPH0517224Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52136271A (en) * | 1976-05-10 | 1977-11-14 | Berstorff Gmbh Masch Hermann | Process for manufacture of thin tube using polystyrene foam |
| JPS541373A (en) * | 1977-06-02 | 1979-01-08 | Nakatani Machinery | Kneading extrusion apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63106626U (en) | 1988-07-09 |
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