JP3650915B2 - Twin screw extruder - Google Patents

Twin screw extruder Download PDF

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Publication number
JP3650915B2
JP3650915B2 JP09027097A JP9027097A JP3650915B2 JP 3650915 B2 JP3650915 B2 JP 3650915B2 JP 09027097 A JP09027097 A JP 09027097A JP 9027097 A JP9027097 A JP 9027097A JP 3650915 B2 JP3650915 B2 JP 3650915B2
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JP
Japan
Prior art keywords
barrel
screw
screw extruder
material supply
twin 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
Application number
JP09027097A
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Japanese (ja)
Other versions
JPH10264235A (en
Inventor
彰訓 井出
邦昭 遠藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP09027097A priority Critical patent/JP3650915B2/en
Publication of JPH10264235A publication Critical patent/JPH10264235A/en
Application granted granted Critical
Publication of JP3650915B2 publication Critical patent/JP3650915B2/en
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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
    • B29C48/395—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
    • B29C48/25—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
    • B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は少なくとも２箇所以上の材料供給口を持つ微粉体等の嵩比重の小さいプラスチック材料を押出す二軸押出機に係わり、特に軸方向に上下半割りし、上下に開閉可能としたバレルに関する。
【０００２】
【従来技術】
図３のように、従来この種微粉体例へばタルク、シリカ等の無機質原料とプラスチック原料の混合物、或いは熱硬化性プラスチック材料等のような嵩比重の小さいプラスチック材料を押出す二軸押出機１のバレル２およびスクリュ３はそのフィード部Ｆにおいて材料の搬送容量を増大させるためフィード部Ｆのバレル内径面および同バレル内径面に対向するスクリュの外径Ｄ1 を他部分のそれらＤ2 より太径としていた。
【０００３】
従って、材料切換時等の分解掃除の際は図４のように、スクリュ３をその駆動軸４とカップリング５により連結したまま機械本体６に残し、加熱バレル２のみ台車７に乗せて機械本体６から引き抜くようにしている。
【０００４】
【発明が解決しょうとする課題】
しかしながら、バレル内で複数種の微粉体等の嵩比重の小さいプラスチック材料を効率良く加熱、混練および溶融させるためには複数種の材料をまとめて一カ所の供給口から一括供給するのではなく、プラスチック材料をバレル内に供給する材料供給口は２箇所以上設け、材料を別々に供給するることが良いとされ、そのような場合、スクリュ太径部が中間部分にあるためバレルからスクリュを挿入することができないという欠点があった。
【０００５】
本発明の目的は前述のようなフィード部のバレル内径面および同バレル内径面に対向するスクリュの外径を他部のそれ等より太径とした場合、スクリュの組込みができないという欠点を取除き、スクリュの組込みは勿論、分解掃除が容易にできる二軸押出機を提供することにある。
【０００６】
【課題を解決するための手段】
前述の目的を達成するため本発明は少なくとも２箇所以上の材料供給口を持つ微粉体等の嵩比重の小さいプラスチック材料を押出す二軸押出機において、軸方向に上下半割りするとともに、上下に開閉可能としたバレルと、前記バレルの内径面に基端を回転自在に支承され、前記バレルの少なくとも２箇所以上の材料供給口に対向する部分が他より太径の二軸スクリュとを有して成る二軸押出機とした。
【０００７】
【発明の実施の形態】
少なくとも２箇所以上の材料供給口を有し、バレルおよびスクリュが材料供給口に対向する部分の外径が他部分より太径とした微粉体等の嵩比重の小さいプラスチック材料を加熱、混練および溶融して押出す二軸押出機において、前記バレルを軸方向に上下半割りとし、上下に開閉可能とした。
【０００８】
【実施例】
図１および図２により本発明の１実施例を説明すると、１０は二軸押出機のバレルで、内径面にスクリュ１１が図示してない駆動部により基部（図中右方向）を機体本体に片持ち状態で支承され、回転自在に挿入されている。バレル１０には２か所の材料供給口１２および１３が設けてあり、同材料供給口１２および１３に対向するフィード部Ｆのバレル内径面およびスクリュ径Ｄ1 は他の部分の内径面およびスクリュ径Ｄ2 より太径と成っている。
【０００９】
前記バレル１０は図２に示すように軸方向に１０ａ、１０ｂのように上下に分割されている。前記上下バレル１０ａ、１０ｂは夫々支点１４に回動可能に連結されたアーム１５および１６に固着されている。従って分解掃除に際しては、前記上下バレル１０ａ、１０ｂは支点１４を中心にして矢印ａのように回動可能で、バレル１０に挿入してあるスクリュ１１を解放することができる。
【００１０】
以上説明したような構成となっているので、材料切換時、残留原料、或いは劣化物等の掃除の際、鎖線で示すような閉じ状態のバレル１０を支点１４を中心にして上下バレル１０ａ、１０ｂを矢印ａのように回動させれば、上下に開くことができ、バレル１０の内径面およびスクリュ１１は解放され、掃除等が容易にできる。
【００１１】
【発明の効果】
以上説明したように２箇所の材料供給口があり、材料供給口に対向するバレル内径面およびスクリュ径が他部分より太径であっても材料切換時等の分解掃除の際、バレルの内径面およびスクリュは解放され、掃除等が容易にできる。
【図面の簡単な説明】
【図１】本発明の１実施例を示す図で、加熱バレルの軸方向の断面図。
【図２】本発明の１実施例の示す図１のＡ−Ａ断面の図で、バレルを開いた時の図。
【図３】従来の二軸押出機の加熱バレル部の軸方向の断面を示す図。
【図４】従来の二軸押出機の説明図で、バレルを機械本体から引出した時の図。
【符号の説明】
１０ バレル
１１ スクリュ
１２ 材料供給口
１３ 材料供給口
１４ 支点
１５ アーム
１６ アーム[0001]
[Industrial application fields]
The present invention relates to a twin-screw extruder for extruding a plastic material having a small bulk specific gravity such as fine powder having at least two material supply ports, and more particularly to a barrel that is vertically divided in the vertical direction and can be opened and closed vertically. .
[0002]
[Prior art]
As shown in FIG. 3, a conventional twin screw extruder 1 for extruding a plastic material having a small bulk specific gravity such as a mixture of an inorganic raw material such as talc and silica and a plastic raw material, or a thermosetting plastic material. Since the barrel 2 and the screw 3 increase the material conveying capacity in the feed portion F, the barrel inner diameter surface of the feed portion F and the outer diameter D 1 of the screw facing the barrel inner diameter surface are larger than those D 2 of other portions. I was trying.
[0003]
Therefore, at the time of disassembly and cleaning at the time of material switching or the like, as shown in FIG. 4, the screw 3 is left in the machine body 6 while being connected to the drive shaft 4 and the coupling 5, and only the heating barrel 2 is placed on the carriage 7. 6 is pulled out.
[0004]
[Problems to be solved by the invention]
However, in order to efficiently heat, knead and melt a plastic material having a low bulk specific gravity such as a plurality of types of fine powder in the barrel, instead of collectively supplying a plurality of types of materials from a single supply port, It is said that it is good to supply two or more material supply ports to supply plastic material into the barrel and supply the materials separately. In such a case, the screw is inserted from the barrel because the large diameter part of the screw is in the middle part. There was a drawback that could not be done.
[0005]
The object of the present invention is to eliminate the disadvantage that the screw cannot be incorporated when the outer diameter of the barrel inner diameter surface of the feed portion and the outer diameter of the screw facing the inner diameter surface of the feed portion are larger than those of the other portions. An object of the present invention is to provide a twin screw extruder that can be easily disassembled and cleaned as well as incorporating a screw.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a biaxial extruder for extruding a plastic material having a small bulk specific gravity such as fine powder having at least two material supply ports. A barrel that is openable and closable, and a base end that is rotatably supported by an inner diameter surface of the barrel, and a portion of the barrel that faces at least two material supply ports has a larger diameter than the others. A twin-screw extruder consisting of
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Heat, knead, and melt plastic materials with a small bulk specific gravity such as fine powder with at least two material supply ports and the outer diameter of the barrel and screw facing the material supply port is larger than the other parts In the twin-screw extruder that extrudes, the barrel is vertically divided in the vertical direction so that it can be opened and closed vertically.
[0008]
【Example】
FIG. 1 and FIG. 2 illustrate one embodiment of the present invention. Reference numeral 10 denotes a barrel of a twin-screw extruder, and a base portion (right direction in the figure) is set to the body body by a drive unit not shown on the inner diameter surface of the screw 11. It is supported in a cantilevered state and is rotatably inserted. The barrel 10 is provided with a two material supply port 12 and 13, the barrel inner surface and the screw diameter D 1 of the feed section F which is opposed to the material supply port 12 and 13 inner diameter surface of the other portion and the screw and has a larger diameter than the diameter D 2.
[0009]
As shown in FIG. 2, the barrel 10 is divided into upper and lower parts 10a and 10b in the axial direction. The upper and lower barrels 10a and 10b are fixed to arms 15 and 16 that are rotatably connected to a fulcrum 14, respectively. Therefore, at the time of disassembly and cleaning, the upper and lower barrels 10a and 10b can rotate around the fulcrum 14 as shown by the arrow a, and the screw 11 inserted in the barrel 10 can be released.
[0010]
Since the structure is as described above, the upper and lower barrels 10a, 10b centering on the fulcrum 14 are closed barrels 10 as shown by chain lines when cleaning materials such as residual raw materials or deteriorated materials when switching materials. Can be opened up and down, the inner diameter surface of the barrel 10 and the screw 11 are released, and cleaning and the like can be facilitated.
[0011]
【The invention's effect】
As described above, there are two material supply ports, and the barrel inner surface facing the material supply port and the inner diameter surface of the barrel during disassembly cleaning such as when switching materials even if the screw diameter is larger than the other parts And the screw is released and can be cleaned easily.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of the present invention, and is a sectional view in the axial direction of a heating barrel.
FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 according to one embodiment of the present invention when the barrel is opened.
FIG. 3 is a view showing an axial cross section of a heating barrel portion of a conventional twin screw extruder.
FIG. 4 is an explanatory view of a conventional twin-screw extruder, and is a view when a barrel is pulled out from a machine body.
[Explanation of symbols]
10 barrel 11 screw 12 material supply port 13 material supply port 14 fulcrum 15 arm 16 arm

Claims (1)

少なくとも２箇所以上の材料供給口を持つ微粉体等の嵩比重の小さいプラスチック材料を押出す二軸押出機において、軸方向に上下半割りするとともに、上下が開閉可能としたバレルと、前記バレルの内径面に基端を回転自在に支承され、前記バレルの少なくとも２箇所以上の材料供給口に対向する部分が他より太径の二軸スクリュとを有してなる二軸押出機。In a twin-screw extruder for extruding a plastic material with a small bulk specific gravity such as fine powder having at least two material supply ports, a barrel that is divided in the upper and lower directions in the axial direction and that can be opened and closed vertically, A twin screw extruder having a base end rotatably supported on an inner diameter surface, and a portion of the barrel facing two or more material supply ports having a larger diameter twin screw than the other.
JP09027097A 1997-03-25 1997-03-25 Twin screw extruder Expired - Lifetime JP3650915B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09027097A JP3650915B2 (en) 1997-03-25 1997-03-25 Twin screw extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09027097A JP3650915B2 (en) 1997-03-25 1997-03-25 Twin screw extruder

Publications (2)

Publication Number Publication Date
JPH10264235A JPH10264235A (en) 1998-10-06
JP3650915B2 true JP3650915B2 (en) 2005-05-25

Family

ID=13993829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09027097A Expired - Lifetime JP3650915B2 (en) 1997-03-25 1997-03-25 Twin screw extruder

Country Status (1)

Country Link
JP (1) JP3650915B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024005258A1 (en) * 2022-06-30 2024-01-04 김명호 Twin-screw compounder having circulation structure

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100773954B1 (en) 2006-03-16 2007-11-07 (주)대창정밀 co-rotating twin-screw compounding machine
CN101973122A (en) * 2010-09-19 2011-02-16 烟台凌宇粉末机械有限公司 Modular composite extruder
CN109878054B (en) * 2019-04-10 2021-07-09 无锡市博宇塑机有限公司 Double-screw extruder
EP4331808A1 (en) * 2022-09-02 2024-03-06 Brabender GmbH & Co. KG Screw extruder for granulate processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024005258A1 (en) * 2022-06-30 2024-01-04 김명호 Twin-screw compounder having circulation structure

Also Published As

Publication number Publication date
JPH10264235A (en) 1998-10-06

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