JP2005144703A - Hermetically closed type kneader - Google Patents

Hermetically closed type kneader Download PDF

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Publication number
JP2005144703A
JP2005144703A JP2003381548A JP2003381548A JP2005144703A JP 2005144703 A JP2005144703 A JP 2005144703A JP 2003381548 A JP2003381548 A JP 2003381548A JP 2003381548 A JP2003381548 A JP 2003381548A JP 2005144703 A JP2005144703 A JP 2005144703A
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Prior art keywords
rotor
nog
kneader
rear side
rotation direction
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JP4085957B2 (en
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Mitsuo Kurashige
充雄 倉茂
Yoji Kimura
洋治 木村
Takaaki Ando
貴章 安藤
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • B29B7/186—Rotors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber

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

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a homogenous kneaded sheet by preventing the stagnation and non-uniform flow of a material, efficiently performing compression or shearing and enhancing the dispersing degree of a compounding agent. <P>SOLUTION: In this hermetically closed type kneader, two rows of nogs 10 are arranged to two rotors 7 in a phase separated by about 180° mutually and formed into a spiral shape at a predetermined twist angle becoming symmetric left and right in a rotor axial direction. Each of the nogs 10 is formed so that the surface 11 on the front side of the rotary direction thereof almost starts from the end edge of each rotor 7 but the end surface 12 on the rear side of the rotary direction thereof is terminated so as not to reach the end edge on the opposite side of each rotor 7 and the upper part of each rotor 7 of the region where the end surface 12 does not reach is set to a material passage 20. Further, the nog 10 of the partner rotor 7 is meshed with the part between the end surface 12 on the rear side of the rotary direction of one nog 10 of each rotor 7 and the wall surface 13 on the front side of the rotary direction of the other nog 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、密閉されたチャンバーの内側でゴムやプラスチック等の材料を混練する密閉型混練機に関するものである。   The present invention relates to a closed kneader for kneading a material such as rubber or plastic inside a sealed chamber.

特許文献１には、非噛み合い式の密閉型混練機が記載されている。この混練機は、図６に示すように、密閉されたチャンバー５１の内側に２本のロータ５２を設け、各ロータ５２に長短一対の翼５３を突設し、各ロータ５２を互いに逆方向へ回転し、翼５３の回転により材料Ｍを混練するように構成されている。また、特許文献２には、非噛み合い式の混練機において、翼の形状によりチャンバーとロータとの隙間（チップクリアランス）をロータ軸線方向に変化させる技術が記載されている。   Patent Document 1 describes a non-meshing type closed kneader. As shown in FIG. 6, this kneader is provided with two rotors 52 inside a sealed chamber 51, a pair of long and short blades 53 projecting from each rotor 52, and the rotors 52 in opposite directions. The material M rotates and the material M is kneaded by the rotation of the blades 53. Patent Document 2 describes a technique for changing a gap (tip clearance) between a chamber and a rotor in a rotor axial direction according to the shape of a blade in a non-meshing kneader.

特許文献３には、噛み合い式の混練機が記載されている。この混練機は、図７に示すように、２本のロータ５６に長さが異なる３つのノグ５７を突設し、そのうち一つのノグ５７をロータ５６の全長にわたって螺旋状に延びるように形成し、各ロータ５６を互いに逆方向へ回転し、ノグ５７の噛み合いにより材料を混練するように構成されている。
特公平４−５５３６３号公報 特開平１１−４８２３９号公報 特表平１１−５０４５６６号公報 Patent Document 3 describes a meshing kneader. In this kneader, as shown in FIG. 7, two noches 57 having different lengths are projected from two rotors 56, and one of the noches 57 is formed so as to extend spirally over the entire length of the rotor 56. The rotors 56 are rotated in opposite directions, and the materials are kneaded by meshing with the nogs 57.
Japanese Patent Publication No. 4-55363 JP 11-482239 A Japanese National Patent Publication No. 11-504666

ところが、従来の非噛合い式混練機によると、図６（ａ）に示すように、材料Ｍがその種類によっては２本のロータ５２の間で翼５３が届かない部分Ｐ１に滞留することがあり、この部分の材料を充分に圧縮・せん断することができず、配合剤の分散度が低下する問題があった。これに対し、噛み合い式混練機は、２本のロータ５６の間を通過する材料Ｍをノグ５７の噛み合いにより繰り返し圧縮・せん断し、配合剤の分散度を高めることができる。   However, according to the conventional non-meshing kneader, as shown in FIG. 6A, the material M may stay in the portion P1 where the blades 53 do not reach between the two rotors 52 depending on the type. There is a problem that the material of this part cannot be sufficiently compressed and sheared, and the dispersibility of the compounding agent is lowered. On the other hand, the meshing type kneader can repeatedly compress and shear the material M passing between the two rotors 56 by the meshing of the nogs 57 to increase the dispersibility of the compounding agent.

しかし、従来の噛み合い式混練機は、図７（ｂ）に示すように、最も長いノグ５７がロータ５６の全長に延びているため、材料Ｍがその種類によってはノグ５７の回転方向後端側の部分Ｐ２を十分に通過できず、ここに配合剤が未分散の状態で滞留することがあった。また、どちらのタイプの混練機も、一つのロータに長短複数の翼又はノグが設けられているので、材料が長い方の翼又はノグに沿ってロータ軸線方向の片側に偏流しやすく、配合剤の分配が不充分となり、練り生地の材質が不均一になるという問題点があった。   However, in the conventional mesh type kneader, as shown in FIG. 7 (b), the longest nog 57 extends the entire length of the rotor 56. In this case, the compounding agent could not sufficiently pass through part P2, and the compounding agent sometimes stayed in an undispersed state. In addition, since both types of kneaders are provided with a plurality of long or short blades or nogs in one rotor, the material tends to drift to one side in the rotor axial direction along the longer blades or nogs. There is a problem that the distribution of the kneaded material becomes insufficient and the material of the kneaded dough becomes non-uniform.

本発明の目的は、上記課題を解決し、材料の滞留及び偏流を防止し、圧縮・せん断を効率よく行い、配合剤の分散度を高め、均質な練り生地が得られる噛み合い式の密閉型混練機を提供することにある。   The object of the present invention is to provide a meshing type closed kneading that solves the above problems, prevents material stagnation and drift, efficiently compresses and shears, increases the dispersion of the compounding agent, and provides a homogeneous kneaded dough. Is to provide a machine.

上記の課題を解決するために、本発明は、密閉されたチャンバーの内側で２本のロータが回転し、各ロータに突設したノグが噛み合う密閉型混練機において、各ロータに２条のノグを互いに略１８０°離れた位相で配置するとともにロータ軸線方向に左右対称となる所定の捩り角度で螺旋状に形成し、各ノグを、回転方向前側の端面はロータの端縁から略始まるが、回転方向後側の端面はロータの反対側の端縁に届かないで終わるように形成して、該届かない部位のロータ上を材料通路としたことを特徴とする。各ロータの一方のノグの回転方向後側の端面と他方のノグの回転方向前側の壁面との間に、相手側ロータのノグが噛み合うようにすることが好ましい。   In order to solve the above-described problems, the present invention provides a closed kneading machine in which two rotors rotate inside a sealed chamber and the nogs projecting from the rotors mesh with each other. Are arranged in a phase separated from each other by approximately 180 ° and are formed in a spiral shape with a predetermined twist angle that is symmetrical in the left-right direction in the rotor axis direction, and the end faces on the front side in the rotational direction substantially start from the edge of the rotor. The end face on the rear side in the rotational direction is formed so as to end without reaching the opposite edge of the rotor, and the material passage is formed on the rotor at the part that does not reach. It is preferable that the nose of the mating rotor is engaged between the end face on the rear side in the rotation direction of one of the rotors and the wall surface on the front side in the rotation direction of the other nog.

ここで、密閉型混練機は、特定の用途に限定されず、例えば、ゴムやプラスチックの主体材料と配合剤（可塑剤、加硫剤、着色剤等）との混練り、或いは、主体材料単独の素練り（ゴムの可塑化練り等）に用いることができる。チャンバーの構造や容量、ロータの直径や長さ等の設計事項は、特に限定されず、材料の種類又はその混練条件に応じて適宜に決定できる。   Here, the closed-type kneader is not limited to a specific application. For example, the main material of rubber or plastic and a compounding agent (plasticizer, vulcanizer, colorant, etc.) are kneaded, or the main material alone. It can be used for kneading (eg, plasticizing kneading of rubber). Design items such as the structure and capacity of the chamber and the diameter and length of the rotor are not particularly limited, and can be appropriately determined according to the type of material or the kneading conditions.

ロータのノグ形状は材料の圧縮・せん断作用に大きな影響を及ぼす。本発明では、２条のノグがロータの軸線方向に左右対称となる所定の捩り角度で螺旋状に形成されているので、両ノグは、長さと幅が略等しく、向きが左右逆となる。このため、材料は、ロータの回転に伴い、チャンバーとロータとの間、及び２本のロータの間をそれぞれ左右均等に流れる。従って、材料がロータ軸線方向に均等な圧縮・せん断作用を受け、配合剤の分散が効率よく行われる。   The shape of the rotor nog has a great influence on the compression and shearing of the material. In the present invention, the two nogs are formed in a spiral shape with a predetermined torsional angle that is bilaterally symmetric in the axial direction of the rotor. Therefore, the lengths and widths of the two nogs are substantially equal and the directions are reversed. For this reason, as the rotor rotates, the material flows equally between the chamber and the rotor and between the two rotors. Therefore, the material is subjected to uniform compression / shearing action in the rotor axial direction, and the compounding agent is efficiently dispersed.

また、各ノグを、回転方向前側の端面はロータの端縁から略始まるが、回転方向後側の端面はロータの反対側の端縁に届かないで終わるように形成して、該届かない部位のロータ上を材料通路としているので、ノグの回転方向後側の端部に材料が滞留しなくなる。しかも、各ロータの一方のノグの回転方向後側の端面と他方のノグの回転方向前側の壁面との間（前記材料通路を含む）に相手側ロータのノグが噛み合うと、材料の全量を残らず圧縮・せん断して、配合剤の未分散を確実に防止できる。   Also, each nog is formed so that the end surface on the front side in the rotation direction starts from the end edge of the rotor, but the end surface on the rear side in the rotation direction ends without reaching the end edge on the opposite side of the rotor. Since the material passage is on the rotor, the material does not stay at the end on the rear side in the rotation direction of the nog. In addition, if the nose of the mating rotor meshes between the end surface on the rear side in the rotation direction of one of the rotors of each rotor and the wall surface on the front side in the rotation direction of the other noggle (including the material passage), the entire amount of material remains. It is possible to reliably prevent undispersion of the compounding agent by compressing and shearing.

ノグ形状に関し、本発明はさらに有利な形状を以下に提案する。
（１）ノグの捩り角度を３５°〜５５°に設定する。捩り角度とは、ロータの端縁に直角な直線とノグとの間の角度である。捩り角度が３５°〜５５°、より好ましくは、４０°〜５０°の範囲であると、材料の軸方向移動量とノグ頂面通過量とがほぼ等しくなり、バランスのよい分散・分配機能が得られる。捩り角度が３５°未満になると、材料の軸方向移動量が減り、ノグ頂面通過量が増える。捩り角度が５５°を超えると、材料の軸方向移動量が増え、ノグ頂面通過量が減る。このため、どちらの場合も分散・分配機能のバランスが崩れる。 With respect to the nog shape, the present invention proposes further advantageous shapes as follows.
(1) The torsion angle of the nog is set to 35 ° to 55 °. The twist angle is an angle between a straight line perpendicular to the edge of the rotor and the nog. When the twist angle is in the range of 35 ° to 55 °, and more preferably in the range of 40 ° to 50 °, the amount of axial movement of the material and the amount of passage through the top of the nog are almost equal, and a well-balanced dispersion / distribution function is achieved. can get. When the twist angle is less than 35 °, the amount of axial movement of the material decreases, and the amount of passage through the top surface of the nog increases. If the twist angle exceeds 55 °, the amount of axial movement of the material increases and the amount of passage through the top surface of the nog decreases. For this reason, in both cases, the balance between the distribution and distribution functions is lost.

（２）ノグの回転方向前側の壁面を傾斜角度が３５°〜５５°の材料喰込面とする。傾斜角度とは、ロータの円筒面とノグの回転方向前側の壁面との間の角度であり、ノグが材料に喰い込む角度を意味する。この傾斜角度（喰込角度）が３５°〜５５°、より好ましくは、４０°〜５０°の範囲であると、材料が効率よく圧縮・せん断され、配合剤の分散が促進される。傾斜角度が３５°未満になると、材料に過大な圧縮・せん断応力が発生し、発熱により材質に悪影響を与える可能性がある。傾斜角度が５５°を超えると、圧縮・せん断作用が不充分となり、配合剤の分散不良が発生しやすい。 (2) The wall surface on the front side in the rotation direction of the nogging is a material biting surface having an inclination angle of 35 ° to 55 °. The inclination angle is an angle between the cylindrical surface of the rotor and the wall surface on the front side in the rotation direction of the nog, and means an angle at which the nog bites into the material. When this inclination angle (biting angle) is in the range of 35 ° to 55 °, more preferably 40 ° to 50 °, the material is efficiently compressed and sheared, and the dispersion of the compounding agent is promoted. When the inclination angle is less than 35 °, excessive compressive / shear stress is generated in the material, and the material may be adversely affected by heat generation. When the inclination angle exceeds 55 °, the compression / shearing action becomes insufficient and the dispersion of the compounding agent tends to occur.

（３）ノグの頂面を段付き形状とする。段付き形状としては、特に限定されないが、ノグの頂面の幅方向に延びる（好ましくは複数の）凹部を形成したことによるものを例示できる。段付き形状にすれば、ノグの頂面を通過する材料の流れが変化するため、より多くの材料にせん断作用を与えて、配合剤の分散度を高めることができる。 (3) The top surface of the nog is stepped. Although it does not specifically limit as a stepped shape, The thing by having formed the recessed part (preferably several) extended in the width direction of the top surface of a nog can be illustrated. If the stepped shape is adopted, the flow of the material passing through the top surface of the nog changes, so that a shearing action can be applied to more materials to increase the dispersibility of the compounding agent.

従って、本発明に係る密閉型混練機によれば、材料の滞留及び偏流を防止し、圧縮・せん断を効率よく行い、配合剤の分散度を高め、均質な練り生地が得られるという優れた効果を奏する。   Therefore, according to the closed-type kneader according to the present invention, excellent effects of preventing material stagnation and drift, efficiently compressing and shearing, increasing the dispersibility of the compounding agent, and obtaining a homogeneous kneaded dough. Play.

以下、本発明を具体化した一実施形態を図面に基づいて説明する。図１に示すように、この密閉型混練機は基台１の上にケーシング２を備え、ケーシング２によりチャンバー３が密閉された状態で設けられている。チャンバー３の上側には、材料を投入するホッパードア４と、材料をチャンバー３に押し込むウエイト５と、ウエイト５を昇降するシリンダー６とが配設されている。チャンバー３の内側には、材料を混練する２本のロータ７が設けられ、チャンバー３の下側に、混練後の練り生地を取り出すドロップドア８が設けられている。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings. As shown in FIG. 1, the closed kneader includes a casing 2 on a base 1, and a chamber 3 is sealed with the casing 2. Above the chamber 3, a hopper door 4 for feeding the material, a weight 5 for pushing the material into the chamber 3, and a cylinder 6 for lifting and lowering the weight 5 are disposed. Two rotors 7 for kneading the material are provided inside the chamber 3, and a drop door 8 for taking out the kneaded dough after the kneading is provided below the chamber 3.

図２，図３に示すように、２本のロータ７は平行に相対する状態でケーシング２に支持され、モータによりギヤ（図示略）を介して互いに逆方向へ回転される。各ロータ７の円柱面上には２条の螺旋状のノグ１０が突設され、ロータ７の回転に伴い、一方のロータ７のノグ１０が相手側ロータ７のノグ１０に噛み合うようになっている。そして、チャンバー３とロータ７との間におけるノグ１０の回転と、ロータ７同士の間におけるノグ１０の噛み合いとにより、材料Ｍが圧縮・せん断作用を受けて、主体材料中に配合剤が練り込まれる。   As shown in FIGS. 2 and 3, the two rotors 7 are supported by the casing 2 in a state of facing each other in parallel, and are rotated in opposite directions by a motor via gears (not shown). Two spiral nogs 10 project from the cylindrical surface of each rotor 7, and as the rotor 7 rotates, the nogs 10 of one rotor 7 mesh with the nogs 10 of the mating rotor 7. Yes. The material M is compressed and sheared by the rotation of the nog 10 between the chamber 3 and the rotor 7 and the engagement of the nog 10 between the rotors 7, and the compounding agent is kneaded into the main material. It is.

図４（ａ）にロータ７の円筒面を展開して示すように、２条のノグ１０は互いに１８０°離れた位相で配置されるとともにロータ軸線方向（図の左右方向）に左右対称となる所定の捩り角度で螺旋状に形成されている。詳しくは、同図において上側のノグ１０は、回転方向前側の端面１１はロータ７の右端縁から始まり、そこから４５°の捩り角度で回転方向後側へ延び、回転方向後側の端面１２はロータ７の左端縁に届かないで終わるように形成されており、該届かない部位のロータ７上が材料通路２０とされている。下側のノグ１０は、上側のノグ１０から１８０°離れた位相で配置されるとともに、回転方向前側の端面１１はロータ７の左端縁から始まり、そこから４５°の捩り角度で回転方向後側へ延び、回転方向後側の端面１２はロータ７の右端縁に届かないで終わるように形成されており、該届かない部位のロータ７上が材料通路２０とされている。そして、図４（ｂ）に示すように、上側のノグ１０の回転方向後側の端面１２と下側のノグ１０の回転方向前側の壁面１３との間に、相手側ロータ７のノグ１０が噛み合うようになっている。材料通路２０の幅は、特に限定されないが、前記のとおり相手側のノグ１０が噛み合える程度以上であれば好ましい。ノグ１０の長さは材料通路２０の幅を確保し得る最大値に設定されている。   As shown in FIG. 4 (a), the cylindrical surface of the rotor 7 is developed, and the two nogs 10 are arranged with a phase 180 degrees away from each other and are symmetrical with respect to the rotor axial direction (left-right direction in the figure). It is formed in a spiral shape with a predetermined twist angle. Specifically, in the figure, the upper nog 10 has an end surface 11 on the front side in the rotational direction starting from the right end edge of the rotor 7 and extending to the rear side in the rotational direction at a twist angle of 45 ° therefrom, and an end surface 12 on the rear side in the rotational direction is It is formed so as to end without reaching the left end edge of the rotor 7, and the material passage 20 is formed on the rotor 7 in a portion where the rotor 7 does not reach. The lower nog 10 is arranged at a phase 180 ° away from the upper nog 10, and the end surface 11 on the front side in the rotational direction starts from the left end edge of the rotor 7, and the rear side in the rotational direction at a twist angle of 45 ° therefrom. The end surface 12 on the rear side in the rotational direction is formed so as to end without reaching the right end edge of the rotor 7, and the material passage 20 is formed on the rotor 7 at the portion that does not reach. Then, as shown in FIG. 4B, the nog 10 of the counterpart rotor 7 is between the end surface 12 on the rear side in the rotation direction of the upper nog 10 and the wall surface 13 on the front side in the rotation direction of the lower nog 10. It comes to mesh. The width of the material passage 20 is not particularly limited, but it is preferable that the width of the material passage 20 is not less than the extent that the mating nog 10 can be engaged as described above. The length of the nog 10 is set to the maximum value that can secure the width of the material passage 20.

また、ノグ１０の回転方向前側の壁面１３は、傾斜角度が４５°（図３参照）の材料喰込面となっている。ノグ１０の頂面１５は、該頂面１５の幅方向（長手方向と直角の向き）に延びる複数の凹部１６が形成されたことによる段付き形状となっている。凹部１６の深さは、特に限定されないが、チャンバー３の内面とノグ１０の頂面１５との隙間の半分程度（例えば、隙間が３ｍｍの場合に凹部１６の深さは１．５ｍｍ）が好ましい。ノグ１０同士の噛み合い隙間は、特に限定されないが、例えばチャンバー３とノグ１０との隙間と同じ程度（例えば３ｍｍ）でよい。なお、ノグ１０の回転方向後側の壁面１４は、干渉しない範囲で形状や傾斜角度等において特に限定されず、例えば曲面でも傾斜面でも直立面でもよい。   Further, the wall surface 13 on the front side in the rotation direction of the nog 10 is a material biting surface having an inclination angle of 45 ° (see FIG. 3). The top surface 15 of the nog 10 has a stepped shape due to the formation of a plurality of recesses 16 extending in the width direction (direction perpendicular to the longitudinal direction) of the top surface 15. The depth of the recess 16 is not particularly limited, but is preferably about half of the gap between the inner surface of the chamber 3 and the top surface 15 of the nog 10 (for example, when the gap is 3 mm, the depth of the recess 16 is 1.5 mm). . The meshing gap between the nogs 10 is not particularly limited, but may be, for example, about the same as the gap between the chamber 3 and the nogs 10 (for example, 3 mm). The wall surface 14 on the rear side in the rotation direction of the nog 10 is not particularly limited in terms of shape, inclination angle, or the like as long as it does not interfere, and may be, for example, a curved surface, an inclined surface, or an upright surface.

上記構成の密閉型混練機によれば、以下のような作用効果が得られる。
（イ）２条のノグ１０がロータ７の軸線方向に対称に形成されているので、ノグ１０の長さ幅が等しく、向きが左右逆となる。このため、材料Ｍは、チャンバー３とロータ７との間で、図４（ａ）に示すように、ノグ１０の頂面１５を左右均等な流量で通過し、ロータ７同士の間では、（ｂ）に示すように、規則的に向きを変えて左右均等に流れる。従って、材料Ｍの各部を均等に圧縮・せん断し、配合剤の分散を効率よく行うことができる。 According to the closed kneader having the above-described configuration, the following effects can be obtained.
(A) Since the two nogs 10 are formed symmetrically in the axial direction of the rotor 7, the lengths and widths of the nogs 10 are equal and the directions are reversed left and right. Therefore, the material M passes between the chamber 3 and the rotor 7 through the top surface 15 of the nog 10 at a uniform flow rate between the rotors 7 as shown in FIG. As shown in b), the direction is changed regularly and flows equally to the left and right. Therefore, each part of the material M can be uniformly compressed and sheared, and the compounding agent can be dispersed efficiently.

（ロ）各ノグ１０の回転方向後側の端面１２はロータ７の端縁に届かないで終わるように形成されており、該届かない部位のロータ７上が材料通路２０とされているので、材料Ｍがノグ１０の回転方向後側の端部付近に滞留しなくなり、配合剤の未分散が発生しない。
（ハ）各ロータ７の一方のノグ１０の回転方向後側の端面１２と他方のノグ１０の回転方向前側の壁面１３との間（前記材料通路２０を含む）に、相手側ロータ７のノグ１０が噛み合うので、材料Ｍの全量を残らず圧縮・せん断し、配合剤の分散度を高めることができる。 (B) The end face 12 on the rear side in the rotation direction of each nog 10 is formed so as to end without reaching the end edge of the rotor 7, and the material passage 20 is formed on the rotor 7 at the part that does not reach The material M does not stay in the vicinity of the end portion on the rear side in the rotation direction of the nog 10, and the undispersed ingredients are not generated.
(C) The nogg of the mating rotor 7 is located between the end surface 12 on the rear side in the rotation direction of one of the rotors 7 of each rotor 7 and the wall surface 13 on the front side in the rotation direction of the other nog 10 (including the material passage 20). Since 10 meshes, the entire amount of the material M is compressed and sheared, and the dispersibility of the compounding agent can be increased.

（ニ）ノグ１０の捩り角度を４５°に設定したので、材料Ｍのロータ軸線方向における移動量とノグ１０の頂面１５における通過量とがほぼ等しくしなり、バランスのよい分散・分配機能が得られる。
（ホ）ノグ１０の回転方向前側の壁面１３を傾斜角度が４５°の材料喰込面としたので、図２（ｂ）に示すように、材料Ｍは、壁面１３の楔作用で圧縮された後、ノグ１０の頂面１５に導かれ、ノグ１０とチャンバー３との隙間で効率よくせん断される。この結果、特に、チャンバー３とロータ７との間における配合剤の分散を促進できる。
（ヘ）ノグ１０の頂面１５を凹部１６による段付き形状としたので、図４（ａ）に示すように、ノグ１０の頂面１５を通過する材料Ｍの流れに変化が生じる。従って、より多くの材料Ｍにせん断作用を与えて、配合剤の分散度を高めることができる。 (D) Since the twist angle of the nog 10 is set to 45 °, the amount of movement of the material M in the rotor axial direction and the amount of passage of the nog 10 through the top surface 15 are almost equal, and a well-balanced distribution / distribution function is achieved. can get.
(E) Since the wall surface 13 on the front side in the rotation direction of the nog 10 is a material encroaching surface having an inclination angle of 45 °, the material M is compressed by the wedge action of the wall surface 13 as shown in FIG. Then, it is guided to the top surface 15 of the nog 10 and is efficiently sheared by the gap between the nog 10 and the chamber 3. As a result, the dispersion of the compounding agent between the chamber 3 and the rotor 7 can be particularly promoted.
(F) Since the top surface 15 of the nog 10 has a stepped shape due to the recess 16, the flow of the material M passing through the top surface 15 of the nog 10 changes as shown in FIG. Therefore, it is possible to increase the degree of dispersion of the compounding agent by giving a shearing action to more materials M.

図５に上記効果を確認するための実験結果を示した。ここで、本発明品とは、２つのノグ１０を備えた上記実施形態のロータ７による練り生地であり、従来品とは、３つのノグ５７（図７参照）を備えた従来のロータ５６による練り生地である。ロータ７，５６をチャンバー容量が１．３リットルの同じ混練機に交換して取り付け、この混練機をシリンダーのエア圧：０．４６ＭＰａ、チャンバーの温度：６０℃、ロータの回転数：３９ｒｐｍで運転した。材料は、主体材料にＥＰＤＭゴムを用い、配合剤にカーボン粉を用い、主体材料を素練りした後、配合剤を一括投入し、本発明品、従来品共に同じ時間で混練した。そして、材料の充填率を変え、複数の練り生地試料を取得し、各試料における配合剤の平均粒子径と生地の破断伸び率とを測定した。   FIG. 5 shows experimental results for confirming the above effects. Here, the product of the present invention is a kneaded dough by the rotor 7 of the above-described embodiment provided with two nogs 10, and the conventional product is by a conventional rotor 56 provided with three nogs 57 (see FIG. 7). It is a kneaded dough. Replace the rotors 7 and 56 with the same kneader having a chamber capacity of 1.3 liters, and operate the kneader at a cylinder air pressure of 0.46 MPa, a chamber temperature of 60 ° C., and a rotor speed of 39 rpm. did. As materials, EPDM rubber was used as the main material, carbon powder was used as the compounding agent, the main material was masticated, the compounding agent was added in a lump, and the present product and the conventional product were kneaded at the same time. And the filling rate of material was changed, the several kneaded material | dough sample was acquired, and the average particle diameter of the compounding agent in each sample and the fracture | rupture elongation rate of material | dough were measured.

図５（ａ）に示すように、配合剤（カーボン粉）の分散度合を示す平均粒子径は、本発明品が１０〜１２μｍであり、従来品が１８〜２０μｍであった。この結果から、本発明のノグ形状によれば、配合剤の分散度が従来の約２倍程度まで向上するという効果を確認できた。図５（ｂ）に示すように、配合剤の分配度合を示す破断伸び率は、本発明品が３００〜３２０％であり、従来品が２８０〜３１０％であった。この結果から、本発明のノグ形状によれば、配合剤の分配を充分に行い、従来品よりも均質な練り生地が得られるという効果を確認できた。   As shown to Fig.5 (a), the average particle diameter which shows the dispersion degree of a compounding agent (carbon powder) was 10-12 micrometers for this invention goods, and 18-20 micrometers for the conventional goods. From this result, according to the nog shape of the present invention, it was confirmed that the dispersion degree of the compounding agent was improved to about twice that of the conventional one. As shown in FIG.5 (b), the breaking elongation rate which shows the distribution degree of a compounding agent was 300-320% of this invention products, and 280-310% of the conventional products. From this result, according to the nog shape of the present invention, it was confirmed that the compounding agent was sufficiently distributed, and a kneaded dough more homogeneous than the conventional product was obtained.

なお、本発明は前記実施形態に限定されるものではなく、例えば以下のように、発明の趣旨から逸脱しない範囲で適宜変更して具体化することもできる。
（１）ノグ１０の捩り角度を４０°前後又は５０°前後に設定する。
（２）回転方向前側の壁面１３の傾斜角度を４０°前後又は５０°前後に設定する。
（３）ノグ１０の頂面１５の凹部１６を鋸歯形又は波形に形成する。 In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) The twist angle of the nog 10 is set to around 40 ° or around 50 °.
(2) The inclination angle of the wall surface 13 on the front side in the rotational direction is set to around 40 ° or around 50 °.
(3) The concave portion 16 of the top surface 15 of the nog 10 is formed in a sawtooth shape or a waveform.

本発明の一実施形態を示す密閉型混練機の全体図である。1 is an overall view of a closed kneader showing an embodiment of the present invention. 図１の混練機のロータを示す断面図である。It is sectional drawing which shows the rotor of the kneading machine of FIG. 図２のロータの正面図である。FIG. 3 is a front view of the rotor of FIG. 2. 図３のロータの展開図である。FIG. 4 is a development view of the rotor of FIG. 3. 本発明と従来の練り生地の物性値を比較する特性図である。It is a characteristic view which compares the physical-property value of this invention and the conventional kneaded material | dough. 従来の非噛み合い式混練機のロータを示す概略図である。It is the schematic which shows the rotor of the conventional non-meshing type kneader. 従来の噛み合い式混練機のロータを示す概略図である。It is the schematic which shows the rotor of the conventional meshing-type kneader.

符号の説明Explanation of symbols

３ チャンバー
７ ロータ
１０ ノグ
１１ 回転方向前側の端面
１２ 回転方向後側の端面
１３ 回転方向前側の壁面
１４ 回転方向後側の壁面
１５ 頂面
１６ 凹部
２０ 材料通路 DESCRIPTION OF SYMBOLS 3 Chamber 7 Rotor 10 Nog 11 End surface of rotation direction front side 12 End surface of rotation direction rear side 13 Wall surface of rotation direction front side 14 Wall surface of rotation direction rear side 15 Top surface 16 Recessed part 20 Material path

Claims (6)

密閉されたチャンバーの内側で２本のロータが回転し、各ロータに突設したノグが噛み合う密閉型混練機において、
各ロータに２条のノグを互いに略１８０°離れた位相で配置するとともにロータ軸線方向に左右対称となる所定の捩り角度で螺旋状に形成し、各ノグを、回転方向前側の端面はロータの端縁から略始まるが、回転方向後側の端面はロータの反対側の端縁に届かないで終わるように形成して、該届かない部位のロータ上を材料通路としたことを特徴とする密閉型混練機。 In a closed kneader in which two rotors rotate inside a sealed chamber and the nogs protruding from each rotor mesh with each other.
Two noses are arranged on each rotor at a phase approximately 180 ° apart from each other, and are formed in a spiral shape with a predetermined twist angle that is bilaterally symmetrical with respect to the rotor axial direction. The sealing is characterized in that it starts substantially from the edge, but the end face on the rear side in the rotational direction is formed so as to end without reaching the opposite edge of the rotor, and the material passage is formed on the rotor at the part not reaching the rotor. Mold kneader. 各ロータの一方のノグの回転方向後側の端面と他方のノグの回転方向前側の壁面との間に、相手側ロータのノグが噛み合うようにした請求項１記載の密閉型混練機。   The hermetic kneading machine according to claim 1, wherein the nose of the mating rotor meshes between the end face on the rear side in the rotation direction of one of the rotors and the wall surface on the front side in the rotation direction of the other noggle. 前記ノグの捩り角度を３５°〜５５°に設定した請求項１又は２記載の密閉型混練機。   The hermetic kneader according to claim 1 or 2, wherein a twist angle of the nogg is set to 35 ° to 55 °. 前記ノグの回転方向前側の壁面を傾斜角度が３５°〜５５°の材料喰込面とした請求項１〜３のいずれか一項に記載の密閉型混練機。   The hermetic kneader according to any one of claims 1 to 3, wherein the wall surface on the front side in the rotation direction of the nogging is a material biting surface having an inclination angle of 35 ° to 55 °. 前記ノグの頂面を段付き形状とした請求項１〜４のいずれか一項に記載の密閉型混練機。   The hermetic kneader according to any one of claims 1 to 4, wherein a top surface of the nog is stepped. 前記段付き形状は前記ノグの頂面の幅方向に延びる凹部を形成したことによるものである請求項５記載の密閉型混練機。   The hermetic kneader according to claim 5, wherein the stepped shape is formed by forming a recess extending in the width direction of the top surface of the nog.
JP2003381548A 2003-11-11 2003-11-11 Closed kneader Expired - Fee Related JP4085957B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010082580A1 (en) * 2009-01-19 2010-07-22 株式会社神戸製鋼所 Kneading rotor, batch kneader, and material kneading method
JP2012051363A (en) * 2010-08-05 2012-03-15 Kobe Steel Ltd Continuous kneading machine and kneading method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010082580A1 (en) * 2009-01-19 2010-07-22 株式会社神戸製鋼所 Kneading rotor, batch kneader, and material kneading method
JP2010162511A (en) * 2009-01-19 2010-07-29 Kobe Steel Ltd Kneading rotor
JP4568785B2 (en) * 2009-01-19 2010-10-27 株式会社神戸製鋼所 Kneading rotor
US8926166B2 (en) 2009-01-19 2015-01-06 Kobe Steel, Ltd. Kneading rotor, batch kneader and method of kneading materials
JP2012051363A (en) * 2010-08-05 2012-03-15 Kobe Steel Ltd Continuous kneading machine and kneading method

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