JP2527515B2 - Kneading and mixing method of raw materials and screw cylinder structure - Google Patents

Kneading and mixing method of raw materials and screw cylinder structure

Info

Publication number
JP2527515B2
JP2527515B2 JP4273037A JP27303792A JP2527515B2 JP 2527515 B2 JP2527515 B2 JP 2527515B2 JP 4273037 A JP4273037 A JP 4273037A JP 27303792 A JP27303792 A JP 27303792A JP 2527515 B2 JP2527515 B2 JP 2527515B2
Authority
JP
Japan
Prior art keywords
lead portion
screw
kneading
cylinder
reverse
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
JP4273037A
Other languages
Japanese (ja)
Other versions
JPH06122120A (en
Inventor
亨 江見
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works 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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP4273037A priority Critical patent/JP2527515B2/en
Publication of JPH06122120A publication Critical patent/JPH06122120A/en
Application granted granted Critical
Publication of JP2527515B2 publication Critical patent/JP2527515B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B29C48/505—Screws
    • B29C48/55—Screws having reverse-feeding elements
    • 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
    • B29C48/525—Conical screws
    • 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
    • B29C48/54—Screws with additional forward-feeding elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、原料の混練・混合方法
及びスクリュ構造に関し、特に、スクリュとシリンダの
摩耗を抑制し、逆リード部より上流のスクリュ長さを短
縮するための新規な改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneading / mixing method for raw materials and a screw structure, and more particularly to a novel improvement for suppressing the wear of the screw and the cylinder and for shortening the screw length upstream from the reverse lead portion. Regarding

【０００２】[0002]

【従来の技術】従来、用いられていたこの種のスクリュ
シリンダ構造としては、一般に、図４で示す構成が採用
されている。すなわち、図４において符号１で示される
ものは、シリンダ２内に回転自在に設けられたスクリュ
であり、このスクリュ１の混合・混練スクリュ部３に
は、ポリマー等の原料が流れる材料流れ方向Ａからみて
上流側２ａに順リード部４が形成され、その下流側２ｂ
には逆リード部５が形成されている。2. Description of the Related Art As a screw cylinder structure of this type which has been conventionally used, a structure shown in FIG. 4 is generally adopted. That is, the reference numeral 1 in FIG. 4 denotes a screw rotatably provided in the cylinder 2, and the mixing / kneading screw portion 3 of the screw 1 has a material flow direction A in which a raw material such as a polymer flows. The forward lead portion 4 is formed on the upstream side 2a when viewed from the side, and the downstream side 2b thereof is formed.
The reverse lead portion 5 is formed on the.

【０００３】前記順リード部４に形成された各フライト
４ａ・・・４ｆの外径及び逆リード部５に形成された各
フライト５ａ・・・５ｅの外径は、何れも同一に形成さ
れ、各フライト４ａ・・・５ｅの外周とシリンダ２の内
周２ｃ間の隙間Ｄは一定に構成されている。The outer diameters of the flights 4a ... 4f formed on the forward lead portion 4 and the outer diameters of the flights 5a ... 5e formed on the reverse lead portion 5 are the same. The clearance D between the outer circumference of each flight 4a ... 5e and the inner circumference 2c of the cylinder 2 is fixed.

【０００４】従って、前述の従来構成のスクリュ構造を
用いてポリマー等の原料の混練・混合を行う場合、上流
側２ａから送られた原料は、順リード部４で原料送り方
向Ａに沿って溶融及び混練・混合を伴いつつ下流側２ｂ
へ送られ、この順リード部４より送られた原料は逆リー
ド部５で前記上流側２ａへ逆流させようとする作用を行
う。Therefore, when kneading and mixing raw materials such as polymers using the above-mentioned conventional screw structure, the raw materials sent from the upstream side 2a are melted in the forward lead part 4 along the raw material feeding direction A. And downstream 2b with kneading and mixing
The raw material sent to the upstream side 2 a is sent to the upstream side 2 a by the reverse lead section 5.

【０００５】この逆リード部５の作用は、前記順リード
部４の作用では十分な溶融及び混練・混合を行うことが
できないため、逆リード部５の逆流作用によって十分な
溶融及び混練・混合を行うものである。Since the action of the reverse lead portion 5 cannot perform sufficient melting and kneading / mixing by the action of the forward lead portion 4, the reverse flow action of the reverse lead portion 5 ensures sufficient melting, kneading / mixing. It is something to do.

【０００６】[0006]

【発明が解決しようとする課題】従来の原料の混練・混
合方法及びスクリュシリンダ構造は、以上のように構成
されていたため、次のような課題が存在していた。すな
わち、順リード部に対して逆リード部が直結されている
ため、図２の従来構成の線図に示されるように順リード
部と逆リード部との境界部で極度に原料の圧力が上昇す
ると同時に、逆リード部への原料の十分な供給ができな
い現象が発生していた。特に、２本のスクリュを用いる
２軸押出機では、順リード部と逆リード部との境界部分
での局部的な圧力の上昇が２本のスクリュ間で発生し、
この圧力によってスクリュがシリンダに強く押しつけら
れることになり、スクリュ及びシリンダの摩耗が促進さ
れていた。また、この圧力によって逆リード部への原料
の流動が抑えられ、処理能力が低下し、所要エネルギー
量が大きくなっていた。この逆リード部への原料の流動
を十分に行わせるには境界部の圧力に打勝つ流動力を得
るために逆リード部より上流の順リード部のスクリュ長
さを十分に長くする必要があり、結果的に、押出機の全
長を長くせざるを得ず、ユーザーの要求とは逆行するも
のであった。Since the conventional kneading / mixing method of raw materials and the screw cylinder structure are configured as described above, the following problems exist. That is, since the reverse lead portion is directly connected to the forward lead portion, the raw material pressure is extremely increased at the boundary portion between the forward lead portion and the reverse lead portion as shown in the conventional configuration diagram of FIG. At the same time, there was a phenomenon that the raw material could not be sufficiently supplied to the reverse lead portion. Particularly, in a twin-screw extruder using two screws, a local pressure increase occurs at the boundary between the forward lead portion and the reverse lead portion between the two screws,
This pressure causes the screw to be strongly pressed against the cylinder, which promotes wear of the screw and the cylinder. Further, this pressure suppresses the flow of the raw material to the reverse lead portion, lowering the processing capacity and increasing the required energy amount. In order to sufficiently flow the raw material to the reverse lead portion, it is necessary to make the screw length of the forward lead portion upstream of the reverse lead portion sufficiently long in order to obtain a fluid force that overcomes the pressure at the boundary portion. As a result, the total length of the extruder had to be increased, which was contrary to the user's request.

【０００７】本発明は、以上のような課題を解決するた
めになされたもので、特に、スクリュとシリンダの摩耗
を抑制し、逆リード部より上流のスクリュ長さを短縮す
るとともに、処理能力を増大し、所要エネルギーを減少
させるようにした原料の混練・混合方法及びスクリュ構
造を提供することを目的とする。The present invention has been made to solve the above problems, and in particular, suppresses wear of the screw and the cylinder, shortens the screw length upstream from the reverse lead portion, and improves the processing capacity. It is an object of the present invention to provide a kneading / mixing method for raw materials and a screw structure in which the required energy is increased and the required energy is decreased.

【０００８】[0008]

【課題を解決するための手段】本発明による原料の混練
・混合方法は、シリンダ内に設けられた順リード部及び
その下流に逆リード部を有する混練・混合スクリュ部を
介して原料の混練・混合を行うようにした原料の混練・
混合方法において、前記逆リード部とシリンダ間に形成
された上流側の隙間大部から下流側の隙間小部に向けて
前記原料を流動させる方法である。A kneading / mixing method for raw materials according to the present invention comprises kneading / mixing a raw material via a kneading / mixing screw section having a forward lead section and a reverse lead section downstream thereof provided in a cylinder. Kneading of raw materials to be mixed
In the mixing method, the raw material is caused to flow from a large gap on the upstream side formed between the reverse lead portion and the cylinder toward a small gap on the downstream side.

【０００９】また、本発明によるスクリュシリンダ構造
は、シリンダ内に設けられた順リード部及びその下流に
逆リード部を有する混練・混合スクリュ部を介して原料
の混練・混合を行うようにしたスクリュシリンダ構造に
おいて、前記逆リード部の各フライトの外径は、前記逆
リード部の上流側から下流側に向けて前記順リード部の
外径より小さい外径から順次径大化した構成である。In the screw cylinder structure according to the present invention, the raw material is kneaded and mixed through the kneading / mixing screw portion having the forward lead portion and the reverse lead portion provided downstream of the screw. In the cylinder structure, the outer diameter of each flight of the reverse lead portion is gradually increased from the outer diameter of the forward lead portion toward the downstream side from the outer diameter of the forward lead portion.

【００１０】また、本発明によるスクリュシリンダ構造
は、シリンダ内に設けられた順リード部及びその下流に
逆リード部を有する混練・混合スクリュ部を介して原料
の混練・混合を行うようにしたスクリュシリンダ構造に
おいて、前記逆リード部の外径はその全長にわたり前記
順リード部の外径より小さい外径で一定であり、前記逆
リード部が位置する前記シリンダの内径は上流側から下
流側へ向けて径小化した構成である。In the screw cylinder structure according to the present invention, the raw material is kneaded and mixed through the kneading / mixing screw portion having the forward lead portion and the reverse lead portion provided downstream of the screw. In the cylinder structure, the outer diameter of the reverse lead portion is constant over its entire length at an outer diameter smaller than the outer diameter of the forward lead portion, and the inner diameter of the cylinder in which the reverse lead portion is located is from the upstream side to the downstream side. The diameter is reduced.

【００１１】[0011]

【作用】本発明による原料の混練・混合方法及びスクリ
ュシリンダ構造においては、混合・混練スクリュ部を構
成する逆リード部の各フライトの外径が、原料流れ方向
からみて、上流側から下流側に向けて順次径大化、又
は、径が一定でシリンダの内径が変化しているため、シ
リンダの内周との隙間は隙間大部から隙間小部となるよ
うに形成されている。従って、順リード部から送り出さ
れた原料は、逆リード部との境界部で圧力が極度には増
大せず、各リード部の境界部で発生する局部的な圧力を
抑えることができると同時に、逆リード部全体へ容易に
供給され混練・混合及び可塑化を十分に行うことが可能
となり、逆リード部より上流のスクリュ長さを従来構成
よりも短くすることができる。In the kneading / mixing method of raw materials and the screw cylinder structure according to the present invention, the outer diameter of each flight of the reverse lead portion constituting the mixing / kneading screw portion is from the upstream side to the downstream side as viewed from the raw material flow direction. The diameter of the cylinder gradually increases, or the inner diameter of the cylinder changes while the diameter is constant, so that the gap with the inner circumference of the cylinder is formed from the large gap portion to the small gap portion. Therefore, the raw material fed from the forward lead portion does not have an extreme increase in pressure at the boundary portion with the reverse lead portion, and it is possible to suppress the local pressure generated at the boundary portion of each lead portion, at the same time, It can be easily supplied to the entire reverse lead portion to be sufficiently kneaded, mixed and plasticized, and the screw length upstream from the reverse lead portion can be made shorter than that of the conventional configuration.

【００１２】[0012]

【実施例】以下、図面と共に本発明による原料の混練・
混合方法及びスクリュ構造の好適な実施例について詳細
に説明する。なお、従来例と同一又は同等部分には同一
符号を付して説明する。図１から図３は本発明によるス
クリュ構造を示すもので、図１は断面図、図２は圧力分
布を示す特性図、図３は他の実施例を示す断面図であ
る。EXAMPLES Hereinafter, the kneading of raw materials according to the present invention will be described with reference to the drawings.
A preferred embodiment of the mixing method and screw structure will be described in detail. It should be noted that the same or equivalent parts as those of the conventional example are designated by the same reference numerals for description. 1 to 3 show a screw structure according to the present invention. FIG. 1 is a sectional view, FIG. 2 is a characteristic diagram showing a pressure distribution, and FIG. 3 is a sectional view showing another embodiment.

【００１３】図１において符号１で示されるものは、シ
リンダ２内に回転自在に設けられたスクリュであり、こ
のスクリュ１の混合・混練スクリュ部３には、ポリマー
等の原料が流れる原料流れ方向Ａからみて上流側２ａに
順リード部４が形成され、その下流側２ｂには逆リード
部５が形成されている。In FIG. 1, reference numeral 1 denotes a screw rotatably provided in a cylinder 2. A mixing / kneading screw portion 3 of the screw 1 has a raw material flow direction in which a raw material such as a polymer flows. A forward lead portion 4 is formed on the upstream side 2a as viewed from A, and a reverse lead portion 5 is formed on the downstream side 2b thereof.

【００１４】前記順リード部４に形成された各フライト
４ａ・・・４ｆの外径は同一に形成され、各フライト４
ａ・・・４ｆの外周とシリンダ２の内周２ｃ間の隙間Ｄ
が一定に形成されている。The outer diameters of the flights 4a ... 4f formed in the forward lead portion 4 are the same, and each flight 4a.
a: A gap D between the outer circumference of 4f and the inner circumference 2c of the cylinder 2
Are formed uniformly.

【００１５】前記逆リード部５の各フライト５ａ・・・
５ｅの各外径は、原料流れ方向Ａからみて、逆リード部
５の上流側５Ａから下流側５Ｂに向けて前記順リード部
４のフライト４ｆより小さい外径から順次径大化してい
る。それゆえ、各フライト５ａ・・・５ｅの外周とシリ
ンダ２の内周２ｃ間に形成される隙間は前記順リード部
４の隙間Ｄよりも大きい隙間大部Ｄ1から隙間小部Ｄ2に
向けて順次変化している。なお、逆リード部５の下流側
フライト５ｅの外径は前記順リード部４のフライト４ｆ
の外径と同一としても良い。Each flight 5a of the reverse lead portion 5 ...
When viewed from the raw material flow direction A, the outer diameters of 5e gradually increase from the upstream side 5A of the reverse lead portion 5 toward the downstream side 5B, starting from the outer diameter smaller than the flight 4f of the forward lead portion 4. Therefore, the gap formed between the outer circumference of each flight 5a ... 5e and the inner circumference 2c of the cylinder 2 is larger than the gap D of the forward lead portion 4 from the large gap portion D 1 to the small gap portion D 2 . Are changing sequentially. The outer diameter of the downstream flight 5e of the reverse lead portion 5 is the flight 4f of the forward lead portion 4.
The outer diameter may be the same.

【００１６】従って、前述の構成のスクリュ構造を用い
て（ポリマー等の）原料の混練・混合を行う場合、上流
側２ａから供給された（ポリマー等の）原料は、順リー
ド部４で原料送り方向Ａに沿って溶融及び混練・混合さ
れた後、逆リード部５の入口側５Ａへ供給される。Therefore, when kneading / mixing raw materials (such as polymers) using the screw structure having the above-described structure, the raw materials (such as polymers) supplied from the upstream side 2a are fed by the forward lead section 4. After being melted and kneaded / mixed along the direction A, it is supplied to the inlet side 5A of the reverse lead portion 5.

【００１７】前述の場合、この逆リード部５の入口側５
Ａの隙間大部Ｄ1は、前記順リード部４の隙間Ｄより大
きいため、この入口側５Ａで極度に圧力が高くなること
はなく、各リード部の境界部で発生する局部的な圧力を
抑えることができると同時に、逆リード部５全体へ容易
に供給され混練・混合及び可塑化を十分に行うことが可
能となる。また、原料が逆リード部５へ容易に供給され
るため、順リード部４の長さを従来のように長くするこ
となく、逆に短縮化することが可能となる。In the above case, the inlet side 5 of the reverse lead portion 5
Since the large gap portion D 1 of A is larger than the gap D of the forward lead portion 4, the pressure does not become extremely high on the inlet side 5A, and the local pressure generated at the boundary portion of each lead portion is At the same time, it can be suppressed, and at the same time, it can be easily supplied to the entire reverse lead portion 5 and sufficiently kneaded, mixed and plasticized. Further, since the raw material is easily supplied to the reverse lead portion 5, it is possible to shorten the length of the forward lead portion 4 in reverse, without increasing the length as in the conventional case.

【００１８】なお、前述の順リード部４と逆リード部５
における従来構成と本発明構成の圧力分布は、図２の圧
力分布特性に示す通りであり、本発明による逆リード部
５を用いた構造の方が圧力上昇が十分に抑えられ、安定
した溶融及び混合・混練を達成することができる。ま
た、本実施例では１軸の場合を図示しているが、単軸に
限らず２軸押出機の場合も適用できることは述べるまで
もないことである。また、逆リード部５のスクリュ形状
は、実施例のフライトの外、ロータ、ニーディング等で
も良い。対象原料としては樹脂、食品等が可能である。The forward lead portion 4 and the reverse lead portion 5 described above are used.
The pressure distributions of the conventional structure and the structure of the present invention are as shown in the pressure distribution characteristics of FIG. 2, and the structure using the reverse lead portion 5 according to the present invention suppresses the pressure rise more sufficiently, resulting in stable melting and Mixing and kneading can be achieved. Further, in the present embodiment, the case of a single screw is shown, but needless to say, the present invention is not limited to a single screw and can be applied to a twin screw extruder. Further, the screw shape of the reverse lead portion 5 may be outside the flight of the embodiment, rotor, kneading, or the like. The target raw material can be resin, food, or the like.

【００１９】また、前述の図１の実施例に限ることな
く、例えば、図３で示すように、逆リード部５の外径Ｄ
3をその全長にわたって一定とすると共に、この外径Ｄ3
は順リード部４の外径Ｄ4よりも小に構成し、この逆リ
ード部５が位置する前記シリンダ２の内径Ｄ5及びＤ6を
上流側５Ａから下流側５Ｂへ向けて径小化した場合も、
図１の実施例と同様の作用を得ることができる。従っ
て、前記逆リード部５が位置するシリンダ２の内壁２ｃ
と各フライト５ａ、５ｂ間には隙間大部Ｄ1と隙間小部
Ｄ2とが形成されている。なお、図１と同一部分には同
一符号を付し、その説明は省略している。Further, the outer diameter D of the reverse lead portion 5 is not limited to the embodiment shown in FIG.
3 is constant over its entire length and this outer diameter D 3
Is smaller than the outer diameter D 4 of the forward lead portion 4, and the inner diameters D 5 and D 6 of the cylinder 2 in which the reverse lead portion 5 is located are reduced from the upstream side 5A to the downstream side 5B. Even if
The same effect as that of the embodiment of FIG. 1 can be obtained. Therefore, the inner wall 2c of the cylinder 2 in which the reverse lead portion 5 is located
A large gap portion D 1 and a small gap portion D 2 are formed between the flights 5a and 5b. The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof is omitted.

【００２０】[0020]

【発明の効果】本発明による原料の混練・混合方法及び
スクリュ構造は、以上のように構成されているため、次
のような効果を得ることができる。すなわち、逆リード
部のシリンダとの隙間が、上流側の隙間大部から下流側
の隙間小部に向けて順次その外径が変えられていること
により、各リード部間における急激な圧力増を抑えるこ
とができ、スクリュとシリンダの摩耗を抑制することが
できる。また、本発明による逆リード部の構造は従来構
造の逆リード部よりも十分な混合・混練を行うことがで
きるため、逆リード部の長さを短縮化し、これにより、
押出機全体の長さを短縮化し、原料の溶融及び混合・混
練に必要なエネルギーを節約することができる。Since the raw material kneading / mixing method and the screw structure according to the present invention are configured as described above, the following effects can be obtained. That is, since the outer diameter of the gap between the reverse lead portion and the cylinder is gradually changed from the large gap portion on the upstream side to the small gap portion on the downstream side, a rapid pressure increase between the lead portions is caused. Therefore, the wear of the screw and the cylinder can be suppressed. Further, since the structure of the reverse lead portion according to the present invention can perform more sufficient mixing / kneading than the reverse lead portion of the conventional structure, the length of the reverse lead portion can be shortened, and
The total length of the extruder can be shortened, and the energy required for melting, mixing and kneading the raw materials can be saved.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明によるスクリュ構造の断面図である。1 is a cross-sectional view of a screw structure according to the present invention.

【図２】圧力分布を示す特性図である。FIG. 2 is a characteristic diagram showing a pressure distribution.

【図３】図１の他の実施例を示す断面図である。FIG. 3 is a sectional view showing another embodiment of FIG. 1;

【図４】従来のスクリュ構造の断面図である。FIG. 4 is a sectional view of a conventional screw structure.

【符号の説明】[Explanation of symbols]

２ シリンダ ３ 混練・混合スクリュ部 ４ 順リード部 ５ 逆リード部 ５Ａ 上流側 ５Ｂ 下流側 Ｄ1 隙間大 Ｄ2 隙間小 Ｄ5、Ｄ6 内径 ５ａ・・・５ｅ フライト2 cylinder 3 kneading and mixing screw part 4 forward lead portion 5 opposite lead portions 5A upstream 5B downstream D 1 gap large D 2 gap small D 5, D 6 inner diameter 5a · · · 5e flight

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 シリンダ(2)内に設けられた順リード部
(4)及びその下流に逆リード部(5)を有する混練・混合ス
クリュ部(3)を介して原料の混練・混合を行うようにし
た原料の混練・混合方法において、前記逆リード部(5)
とシリンダ(2)間に形成された上流側(5A)の隙間大部
(D1)から下流側(5B)の隙間小部(D2)に向けて前記原料を
流動させることを特徴とする材料の混練・混合方法。1. A forward lead portion provided in the cylinder (2).
(4) and a kneading / mixing method of the raw material so as to knead / mix the raw material through a kneading / mixing screw portion (3) having a reverse lead portion (5) downstream thereof, wherein the reverse lead portion (5 )
Large gap on the upstream side (5A) formed between the cylinder and the cylinder (2)
A kneading / mixing method for materials, comprising flowing the raw material from (D 1 ) toward a small gap portion (D 2 ) on a downstream side (5B). 【請求項２】 シリンダ(2)内に設けられた順リード部
(4)及びその下流に逆リード部(5)を有する混練・混合ス
クリュ部(3)を介して原料の混練・混合を行うようにし
たスクリュシリンダ構造において、前記逆リード部(5)
の各フライト(5a・・・5e)の外径は、前記逆リード部(5)の
上流側(5A)から下流側(5B)に向けて前記順リード部(4)
の外径より小さい外径から順次径大化した構成よりなる
ことを特徴とするスクリュシリンダ構造。2. A forward lead portion provided in the cylinder (2).
(4) and a screw cylinder structure in which the raw material is kneaded and mixed through the kneading / mixing screw part (3) having the reverse lead part (5) downstream thereof, the reverse lead part (5)
The outer diameter of each flight (5a ... 5e) is from the upstream side (5A) to the downstream side (5B) of the reverse lead portion (5) toward the forward lead portion (4).
The outer diameter of the screw cylinder is gradually increased from the outer diameter of the screw cylinder structure. 【請求項３】 シリンダ(2)内に設けられた順リード部
(4)及びその下流に逆リード部(5)を有する混練・混合ス
クリュ部(3)を介して原料の混練・混合を行うようにし
たスクリュシリンダ構造において、前記逆リード部(5)
の外径はその全長にわたり前記順リード部(4)の外径よ
り小さい外径で一定であり、前記逆リード部(5)が位置
する前記シリンダ(2)の内径(D5、D6)は上流側(5A)から
下流側(5B)へ向けて径小化したことを特徴とするスクリ
ュシリンダ構造。3. A forward lead portion provided in the cylinder (2).
(4) and a screw cylinder structure in which the raw material is kneaded and mixed through the kneading / mixing screw part (3) having the reverse lead part (5) downstream thereof, the reverse lead part (5)
The outer diameter of is constant at an outer diameter smaller than the outer diameter of the forward lead portion (4) over its entire length, and the inner diameter of the cylinder (2) in which the reverse lead portion (5) is located (D 5 , D 6 ). Is a screw cylinder structure whose diameter is reduced from the upstream side (5A) to the downstream side (5B).
JP4273037A 1992-10-12 1992-10-12 Kneading and mixing method of raw materials and screw cylinder structure Expired - Lifetime JP2527515B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4273037A JP2527515B2 (en) 1992-10-12 1992-10-12 Kneading and mixing method of raw materials and screw cylinder structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4273037A JP2527515B2 (en) 1992-10-12 1992-10-12 Kneading and mixing method of raw materials and screw cylinder structure

Publications (2)

Publication Number Publication Date
JPH06122120A JPH06122120A (en) 1994-05-06
JP2527515B2 true JP2527515B2 (en) 1996-08-28

Family

ID=17522290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4273037A Expired - Lifetime JP2527515B2 (en) 1992-10-12 1992-10-12 Kneading and mixing method of raw materials and screw cylinder structure

Country Status (1)

Country Link
JP (1) JP2527515B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5388373B2 (en) * 2011-05-30 2014-01-15 株式会社日本製鋼所 Material kneading apparatus and material kneading method
CN105058741B (en) * 2015-09-16 2017-10-24 成都爆米花信息技术有限公司 A kind of bidirectional feed Rubber Extruder

Also Published As

Publication number Publication date
JPH06122120A (en) 1994-05-06

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