JP4981738B2 - Kneading machine - Google Patents

Kneading machine Download PDF

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Publication number
JP4981738B2
JP4981738B2 JP2008113412A JP2008113412A JP4981738B2 JP 4981738 B2 JP4981738 B2 JP 4981738B2 JP 2008113412 A JP2008113412 A JP 2008113412A JP 2008113412 A JP2008113412 A JP 2008113412A JP 4981738 B2 JP4981738 B2 JP 4981738B2
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Prior art keywords
rotor
casing
kneading
gap
kneaded material
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JP2008229620A (en
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慎之 林
高司 森部
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries 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
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • 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
    • B29B7/74—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)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

本発明はゴム、プラスチック、食品等の混練に使用する混練機に関する。   The present invention relates to a kneader used for kneading rubber, plastics, foods and the like.

従来の一般的な混練機の断面図を図１２に示す。図１２において、１は混練機のケーシング、２は該ケーシング１およびフローティングウェイト２５、ドロップドア２６とによって密閉される混練室、３は混練用のロータ、４は該ロータ３の軸である。２本のロータ３は混練室２内に互いに平行に配設されており、ロータ軸４の端部に設置された図示しない駆動装置（モータ、動力伝達用歯車等）により、互いに異なる方向に回転する。また、ロータ３には一部が半径方向に突出した突出部５が形成されており、混練室２の内壁は上記突出部５の回転時の軌跡に対応する曲面形状になっている。   A sectional view of a conventional general kneader is shown in FIG. In FIG. 12, 1 is a kneader casing, 2 is a kneading chamber sealed by the casing 1, the floating weight 25, and a drop door 26, 3 is a kneading rotor, and 4 is a shaft of the rotor 3. The two rotors 3 are arranged in parallel in the kneading chamber 2 and are rotated in different directions by driving devices (not shown) (motors, power transmission gears, etc.) installed at the end of the rotor shaft 4. To do. Further, the rotor 3 is formed with a protruding portion 5 that partially protrudes in the radial direction, and the inner wall of the kneading chamber 2 has a curved surface shape corresponding to the locus when the protruding portion 5 rotates.

本混練機では、昇降可能なフローティングウェイト２５が上昇した状態（図１２の二点鎖線）で、ゴム、プラスチック等の原料および薬品等の添加物（以後、単に混練物と称す）をホッパ２７の投入口２８から混練室２内に投入し、フローティングウェイト２５が下降して混練物を加圧する。その状態にてロータ３を回転させ、ロータ３の間に混練物を噛み込むことによって、混練作業が行なわれる。そして、混練が終了すると混練物はケーシング１下部のドロップドア２６を開放することにより外部に排出される。   In this kneader, raw materials such as rubber and plastic and additives such as chemicals (hereinafter simply referred to as kneaded material) are transferred to the hopper 27 while the floating weight 25 that can be raised and lowered is raised (the two-dot chain line in FIG. 12). The material is charged into the kneading chamber 2 from the charging port 28, and the floating weight 25 is lowered to pressurize the kneaded material. In this state, the rotor 3 is rotated, and the kneaded material is caught between the rotors 3 to perform the kneading operation. When the kneading is completed, the kneaded material is discharged to the outside by opening the drop door 26 at the bottom of the casing 1.

本混練機においては、ロータ軸４が混練室２を貫通するように配置されているため、加圧状態で混練される混練物が混練室２の端部から外部へ漏洩しないよう、ロータ軸４やロータ３の端面に漏洩防止手段を設ける必要がある。したがって、従来の装置では、例えば図１３の混練機端部の概略構造図に示すようなダストシール２２を用いて密封している。該ダストシール２２はバネ２４のバネ力により押え金２３を介して、常にロータ３の端面に押し付けられているから、ラビリンス等他の漏洩防止手段と比べて非常に効果的である。   In the present kneader, the rotor shaft 4 is disposed so as to penetrate the kneading chamber 2, so that the kneaded material kneaded under pressure does not leak from the end of the kneading chamber 2 to the outside. Further, it is necessary to provide a leakage preventing means on the end face of the rotor 3. Therefore, in the conventional apparatus, for example, a dust seal 22 as shown in the schematic structural diagram of the end of the kneader in FIG. 13 is used for sealing. Since the dust seal 22 is always pressed against the end face of the rotor 3 via the presser foot 23 by the spring force of the spring 24, the dust seal 22 is very effective as compared with other leakage prevention means such as a labyrinth.

しかしながら、回転を伴うロータ３の端面と固定のケーシング１との間には寸法精度の問題等から隙間Ｂ（０．５〜１．０ｍｍ程度）が不可欠であり、隙間Ｂに混練物が侵入することが考えられる。さらに、ケーシング１とダストシール２２との隙間Ａにまで混練物が達してしまうと、ダストシール２２とケーシング１とが固着してしまうため、バネ２４により力を加えても、ダストシール２２がロータ３の端面に十分接触しなくなるという不具合が生じる。その結果、ロータ３の端面とダストシール２２との間に生じる隙間から混練物が漏洩してしまう。   However, a gap B (about 0.5 to 1.0 mm) is indispensable between the end face of the rotor 3 with rotation and the fixed casing 1 due to problems of dimensional accuracy, and the kneaded material enters the gap B. It is possible. Further, if the kneaded material reaches the gap A between the casing 1 and the dust seal 22, the dust seal 22 and the casing 1 are fixed, so that even if a force is applied by the spring 24, the dust seal 22 remains on the end surface of the rotor 3. There is a problem that it does not come into sufficient contact. As a result, the kneaded material leaks from the gap formed between the end face of the rotor 3 and the dust seal 22.

したがって本発明の目的はケーシング１とロータ３との隙間Ｂに混練物が侵入しにくく、また、何らかの原因で侵入しても、ケーシング１とダストシール２２との隙間Ａにまで混練物が到達することを防止して、混練機外部への混練物の漏洩を防止できる混練機を提供することにある。   Therefore, the object of the present invention is that the kneaded material does not easily enter the gap B between the casing 1 and the rotor 3, and the kneaded material reaches the gap A between the casing 1 and the dust seal 22 even if it enters for some reason. It is intended to provide a kneader capable of preventing the leakage of the kneaded material to the outside of the kneader.

本発明は、上述した課題を解決するため、以下のような手段を提供するものである。
混練物を入れるケーシングと、同ケーシングの内部で回転する混練用ロータとを有する混練機において、前記ロータは円状部と前記円状部の外周から径方向に突出した突出部とを有し、前記ロータの突出部と前記ケーシングとの隙間を前記ロータの円状部と前記ケーシングとの隙間より広く形成し、前記ロータの突出部の側面は平面であることを特徴とする混練機。 The present invention provides the following means to solve the above-described problems.
In a kneader having a casing for containing a kneaded product and a kneading rotor that rotates inside the casing, the rotor has a circular portion and a protruding portion that protrudes in the radial direction from the outer periphery of the circular portion, The kneading machine is characterized in that a gap between the protruding portion of the rotor and the casing is formed wider than a gap between the circular portion of the rotor and the casing, and a side surface of the protruding portion of the rotor is flat .

本願の請求項１に記載された発明によると、ケーシングとロータ端面との隙間のうち、上記ロータの突出部の根元部分から先端までの上記隙間を他の部分の隙間より広く形成したことにより、ケーシングとロータ端面との隙間に侵入した混練物の圧力を低下させ、特に圧力が高くなる突出部からの混練物の侵入を防止することができる。
そして、ケーシングとダストシールとの隙間にまで混練物が侵入するのを防止できるから、混練物が混練機外部へ漏洩するのを防止することができる。 According to the invention described in claim 1 of the present application, among the gaps between the casing and the rotor end surface, by forming the gap from the root portion of the protruding portion of the rotor to the tip wider than the gap of the other portion, It is possible to reduce the pressure of the kneaded material that has entered the gap between the casing and the rotor end surface, and particularly to prevent the kneaded material from entering from the protruding portion where the pressure increases.
And since it can prevent that a kneaded material penetrate | invades into the clearance gap between a casing and a dust seal, it can prevent that a kneaded material leaks out of the kneading machine outside.

まず、参考例１につき、図１ないし図３により説明する。図１ないし図３において、１は混練機のケーシング、２は混練室、３は混練用のロータ、４は該ロータ３の軸、５は該ロータ３の突出部、２１は該ロータ３の回転方向、２２はダストシール、そして６ａは該ロータ３の端面に設けられた溝である。なお、図１ないし図３では省略されているが、図１２に示す従来例と同様に、ダストシール２２はバネ２４のバネ力により押え金２３を介して、常にロータ３の端面に押し付けられており、図中の矢印ａはバネの押し付け力の方向を示す（以下同様）。また、混練室２はケーシング１およびフローティングウェイト２５、ドロップドア２６とによって密閉され、内壁は上記ロータ突出部５の回転時の軌跡に対応する曲面形状になっている。さらに、ロータ３は混練室２内に２本平行に配設され、ロータ軸４の端部に設置された図示しない駆動装置（モータ、動力伝達用歯車等）によって、互いに異方向に回転する構成になっており、従来例と同様の混練作業が行なわれる。   First, Reference Example 1 will be described with reference to FIGS. 1 to 3, 1 is a casing of a kneading machine, 2 is a kneading chamber, 3 is a rotor for kneading, 4 is a shaft of the rotor 3, 5 is a protrusion of the rotor 3, and 21 is a rotation of the rotor 3. The direction, 22 is a dust seal, and 6a is a groove provided on the end face of the rotor 3. Although not shown in FIGS. 1 to 3, the dust seal 22 is always pressed against the end face of the rotor 3 through the presser foot 23 by the spring force of the spring 24 as in the conventional example shown in FIG. 12. The arrow a in the figure indicates the direction of the pressing force of the spring (the same applies hereinafter). The kneading chamber 2 is sealed by the casing 1, the floating weight 25, and the drop door 26, and the inner wall has a curved shape corresponding to the locus of rotation of the rotor protrusion 5. Further, two rotors 3 are arranged in parallel in the kneading chamber 2 and are rotated in different directions by a driving device (not shown) (motor, power transmission gear, etc.) installed at the end of the rotor shaft 4. Thus, the same kneading operation as in the conventional example is performed.

図２における上記溝６ａは、ダストシール２２側の端部が閉口しており、該端部からロータ３の周縁部に行くに連れて回転方向２１とは逆方向の螺旋を描きながら、ロータの周縁部まで伸びて、そこで開口している。つまり、その位置で開口することにより、溝６ａと混練室２とが連通されている。   The groove 6 a in FIG. 2 is closed at the end on the dust seal 22 side, and draws a spiral in the direction opposite to the rotational direction 21 from the end toward the peripheral edge of the rotor 3. It extends to the part and opens there. That is, the groove 6a and the kneading chamber 2 communicate with each other by opening at that position.

また、上記図２と異なる一例を示す図３の溝６ｂは、ロータ３の突出部５の根元部分に形成され、ロータの回転方向２１側の端部が閉口しており、該端部から突出部方向に凸状の山形を描きながら、ロータの周縁部まで伸びて、そこで開口している。つまり、その位置で開口することにより、溝６ｂと混練室２とが連通されている。   Further, the groove 6b of FIG. 3 showing an example different from FIG. 2 is formed at the root portion of the protruding portion 5 of the rotor 3, and the end on the rotation direction 21 side of the rotor is closed and protrudes from the end. While drawing a convex chevron in the part direction, it extends to the peripheral edge of the rotor and opens there. That is, the groove 6b and the kneading chamber 2 communicate with each other by opening at that position.

図２に示す溝６ａによれば、混練作業に伴なってロータ３の端面とケーシング１との隙間に混練物が侵入しても、混練物は溝６ａに入り込み、ロータ３の回転に伴なって周縁方向へ導かれる。さらに溝６ａはダストシール２２側の端部が閉口すると共にロータ３の周縁部側の端部が開口して混練室２と連通しているから、混練物は順次混練室内に戻り、ケーシング１とダストシール２２との隙間にまで混練物が侵入するのを防止することができる。   According to the groove 6 a shown in FIG. 2, even if the kneaded material enters the gap between the end surface of the rotor 3 and the casing 1 during the kneading operation, the kneaded material enters the groove 6 a and accompanies the rotation of the rotor 3. To the peripheral direction. Further, the groove 6a is closed at the end on the dust seal 22 side, and the end on the peripheral edge side of the rotor 3 is opened to communicate with the kneading chamber 2, so that the kneaded material sequentially returns to the kneading chamber, and the casing 1 and the dust seal It is possible to prevent the kneaded material from entering the gap with the 22.

また、図３に示す溝６ｂによれば、ロータ３の突出部５の根元部分に形成されているから、混練作業中に最も高圧になる突出部５とケーシング１との隙間から侵入してくる混練物を効果的に捕らえて、混練室２内に戻すことができ、ケーシング１とダストシール２２との隙間にまで混練物が侵入するのを防止することができる。   Further, according to the groove 6b shown in FIG. 3, the groove 6b is formed at the root portion of the protruding portion 5 of the rotor 3, so that it enters through the gap between the protruding portion 5 and the casing 1 having the highest pressure during the kneading operation. The kneaded material can be effectively captured and returned to the kneading chamber 2, and the kneaded material can be prevented from entering the gap between the casing 1 and the dust seal 22.

なお、図２の溝６ａは螺旋状に形成されているが、直線状に設けても良い。この場合、半径方向に対して平行の位置から回転方向手前側に若干傾斜して設けると効果的である。また、図３の溝６ｂはロータ３の突出部方向に凸状の山形を描いているが、直線状または曲線状に設けても良い。   In addition, although the groove | channel 6a of FIG. 2 is formed in the helical form, you may provide in linear form. In this case, it is effective to slightly incline from the position parallel to the radial direction to the front side in the rotational direction. Moreover, although the groove | channel 6b of FIG. 3 has drawn the convex-shaped mountain shape in the protrusion part direction of the rotor 3, you may provide in linear form or curved form.

参考例１に係る混練機では、ロータ３の端面に溝６ａ、６ｂを設けた例で説明しているが、ケーシング１の上記ロータ３の端面と相対する面に溝を設ける場合、溝はダストシール２２の外周面からロータの周縁部より若干外側にまで形成され、ロータ３の周縁部に行くに連れて回転方向と同方向の螺旋を描くように形成するか、半径方向に対して平行の位置から回転方向側に若干傾斜した直線状に設ける。   In the kneader according to the reference example 1, the grooves 6a and 6b are provided on the end surface of the rotor 3. However, when the grooves are provided on the surface of the casing 1 facing the end surface of the rotor 3, the grooves are dust seals. It is formed from the outer peripheral surface of 22 slightly outside the peripheral edge of the rotor, and is formed so as to draw a spiral in the same direction as the rotational direction as it goes to the peripheral edge of the rotor 3, or a position parallel to the radial direction Is provided in a straight line slightly inclined in the direction of rotation.

次に参考例２を、図４および図５により説明する。図４および図５において、１は混練機のケーシング、２は混練室、３は混練用のロータ、４は該ロータ３の軸、５は該ロータ３の突出部、２１はロータ３の回転方向、２２はダストシール、そして７は該ロータ３の端面に設けられた凸部である。なお、図４および図５では省略されているが、その他の構成は図１２に示す従来例と同様であり、従来例と同様の混練作業が行なわれる。   Next, Reference Example 2 will be described with reference to FIGS. 4 and 5, 1 is a casing of the kneader, 2 is a kneading chamber, 3 is a rotor for kneading, 4 is a shaft of the rotor 3, 5 is a protruding portion of the rotor 3, and 21 is a rotation direction of the rotor 3. , 22 is a dust seal, and 7 is a convex portion provided on the end face of the rotor 3. Although omitted in FIGS. 4 and 5, the other configuration is the same as that of the conventional example shown in FIG. 12, and the same kneading work as that of the conventional example is performed.

図４および図５の凸部７は、ダストシール２２側の外周面からロータ３の周縁部まで、半径方向に対して平行の位置から回転方向手前側に若干傾斜した直線状に設けられている。   4 and 5 are linearly inclined from the outer peripheral surface on the dust seal 22 side to the peripheral edge of the rotor 3 from a position parallel to the radial direction to the front side in the rotational direction.

図４および図５に示す凸部７によれば、混練作業に伴なってロータ３の端面とケーシング１との隙間に混練物が侵入しても、混練物は凸部７によって捉えられると共に、ロータ３の回転に伴なって周縁方向へ導かれる。さらに凸部７はロータ３の周縁部まで形成されているから、混練物は順次混練室内に戻り、ケーシング１とダストシール２２との隙間にまで混練物が侵入するのを防止することができる。   According to the convex portion 7 shown in FIGS. 4 and 5, even if the kneaded material enters the gap between the end face of the rotor 3 and the casing 1 during the kneading operation, the kneaded material is caught by the convex portion 7, As the rotor 3 rotates, it is guided in the peripheral direction. Furthermore, since the convex portion 7 is formed up to the peripheral edge of the rotor 3, the kneaded product is returned to the kneading chamber in sequence, and the kneaded product can be prevented from entering the gap between the casing 1 and the dust seal 22.

なお、図４および図５の凸部７は直線状に形成されているが、ロータ３の周縁部に行くに連れて回転方向とは逆方向の螺旋を描くような曲線状に設けても良い。   4 and 5 is formed in a straight line shape, but may be provided in a curved line that draws a spiral in the direction opposite to the rotation direction as it goes to the peripheral edge of the rotor 3. .

また、図４および図５の凸部７の材質は、混練物の物性により、耐摩耗性や耐腐食性等を考慮して適宜決定され、例えばゴムであればステンレス鋼が一般的に使用される。また、凸部７は鋳造等でロータ３と一体に成形しても、溶接等により別途取付けても良く、凸部７の寸法を調整することで凸部７とケーシング１との隙間を調整することも可能である。   4 and 5 is appropriately determined in consideration of wear resistance, corrosion resistance, etc. depending on the physical properties of the kneaded material. For example, stainless steel is generally used for rubber. The The convex portion 7 may be formed integrally with the rotor 3 by casting or the like, or may be separately attached by welding or the like, and the gap between the convex portion 7 and the casing 1 is adjusted by adjusting the size of the convex portion 7. It is also possible.

参考例２に係る混練機では、ロータ３の端面に凸部７を設けた例で説明しているが、ケーシング１の上記ロータ３端面と相対する面に凸部を設ける場合は、ロータ３の周縁部に行くに連れて回転方向と同方向の螺旋を描くよう形成するか、半径方向に対して回転方向側に若干傾斜した直線状に設けると効果的である。   In the kneading machine according to the reference example 2, the explanation is made with an example in which the convex portion 7 is provided on the end surface of the rotor 3, but when the convex portion is provided on the surface of the casing 1 facing the end surface of the rotor 3, the rotor 3 It is effective to form a spiral in the same direction as the rotation direction as it goes to the peripheral edge, or to provide a straight line slightly inclined to the rotation direction side with respect to the radial direction.

次にその他の検討例１を、図６および図７により説明する。図６および図７において、１は混練機のケーシング、２は混練室、３は混練用のロータ、４は該ロータ３の軸、５は該ロータ３の突出部、２１はロータ３の回転方向、２２はダストシール、そして８は該ロータ３の端面に設けられたブラシ状のシール部材である。なお、図６および図７では省略されているが、その他の構成は図１２に示す従来例と同様であり、従来例と同様の混練作業が行なわれる。   Next, another study example 1 will be described with reference to FIGS. 6 and 7, 1 is a casing of the kneader, 2 is a kneading chamber, 3 is a rotor for kneading, 4 is a shaft of the rotor 3, 5 is a protrusion of the rotor 3, and 21 is a rotation direction of the rotor 3. , 22 is a dust seal, and 8 is a brush-like seal member provided on the end face of the rotor 3. Although omitted in FIGS. 6 and 7, other configurations are the same as those of the conventional example shown in FIG. 12, and the same kneading work as that of the conventional example is performed.

図６および図７のブラシ状シール部材８は、ダストシール２２の外周面からロータ３の周縁部の間にドーナツ状に形成されている。   The brush-like seal member 8 of FIGS. 6 and 7 is formed in a donut shape between the outer peripheral surface of the dust seal 22 and the peripheral edge of the rotor 3.

図６および図７に示すブラシ状シール部材８によれば、混練作業に伴なってロータ３の端面とケーシング１との隙間に混練物が侵入しても、混練物はブラシ状シール部材８の周縁部に堆積し、その後もブラシ状シール部材８と堆積した混練物とによってせき止められるから、ケーシング１とダストシール２２との隙間にまで混練物が侵入するのを防止することができる。   According to the brush-like seal member 8 shown in FIGS. 6 and 7, even if the kneaded material enters the gap between the end surface of the rotor 3 and the casing 1 during the kneading operation, the kneaded material remains in the brush-like seal member 8. Since it accumulates on the peripheral edge and is subsequently dammed up by the brush-like seal member 8 and the accumulated kneaded material, it is possible to prevent the kneaded material from entering the gap between the casing 1 and the dust seal 22.

なお、図６および図７に示すブラシ状シール部材８の材質は混練物の物性により、耐摩耗性や耐腐食性等を考慮して適宜決定され、例えばゴムであればステンレス鋼が一般的に使用される。また、ブラシ状シール部材８の取付方法は、ロータ３の端面に多数の穴を開孔し、ブラシ状シール部材８を植え付けてスポット溶接しても、別途製作したものを溶接等で取付けても良く、ブラシ状シール部材８の寸法を調整することでブラシ状シール部材８とケーシング１との隙間を調整することも可能である。   The material of the brush-like seal member 8 shown in FIGS. 6 and 7 is appropriately determined in consideration of wear resistance, corrosion resistance, etc., depending on the physical properties of the kneaded material. For example, stainless steel is generally used for rubber. used. The brush-like seal member 8 can be attached by opening a large number of holes on the end face of the rotor 3 and planting the brush-like seal member 8 for spot welding, or attaching a separately produced one by welding or the like. It is also possible to adjust the gap between the brush-like seal member 8 and the casing 1 by adjusting the size of the brush-like seal member 8.

その他の検討例１に係る混練機では、ロータ３の端面にブラシ状シール部材７を設けた例で説明しているが、ケーシング１の上記ロータ３の端面と相対する面にブラシ状シール部材７を設けても良い。   In the kneader according to the other examination example 1, the brush-like seal member 7 is provided on the end surface of the rotor 3. However, the brush-like seal member 7 is provided on the surface of the casing 1 that faces the end surface of the rotor 3. May be provided.

次にその他の検討例２を、図８および図９により説明する。図８および図９において、１は混練機のケーシング、２は混練室、３は混練用のロータ、４は該ロータ３の軸、５は該ロータ３の突出部、２１は該ロータ３の回転方向、そして９は該ロータ３の端面に設けられた段差であり、１０は該ロータ３の端面に設けられた傾斜部である。なお、図８および図９では省略されているが、その他の構成は図１２に示す従来例と同様であり、従来例と同様の混練作業が行なわれる。   Next, another study example 2 will be described with reference to FIGS. 8 and 9, 1 is a casing of the kneader, 2 is a kneading chamber, 3 is a rotor for kneading, 4 is a shaft of the rotor 3, 5 is a protrusion of the rotor 3, and 21 is a rotation of the rotor 3. The direction, 9 is a step provided on the end face of the rotor 3, and 10 is an inclined portion provided on the end face of the rotor 3. Although omitted in FIGS. 8 and 9, the other configuration is the same as that of the conventional example shown in FIG. 12, and the same kneading work as that of the conventional example is performed.

図８および図９の段差９は、ダストシール２２の外周面からロータ３の周縁部に渡って、ロータ３の半径方向に対して平行に形成されており、傾斜面１０は段差９の下部からロータの回転方向２１に進むに連れて徐々に高くなり段差９の頂部に達するよう形成されている。   The step 9 in FIGS. 8 and 9 is formed in parallel to the radial direction of the rotor 3 from the outer peripheral surface of the dust seal 22 to the periphery of the rotor 3, and the inclined surface 10 extends from the lower part of the step 9 to the rotor. It is formed so that it gradually increases as it advances in the rotation direction 21 and reaches the top of the step 9.

図８および図９に示す段差９および傾斜面１０によれば、混練作業に伴なってロータ３の端面とケーシング１との隙間に混練物が侵入しても、混練物は段差９によって捉えられると共に、ロータの回転に伴なって周縁方向へ導かれる。さらに段差９はロータ３の周縁部まで形成されているから、混練物は順次混練室内に戻り、ケーシング１とダストシール２２との隙間にまで混練物が侵入するのを防止することができる。   According to the step 9 and the inclined surface 10 shown in FIGS. 8 and 9, even if the kneaded material enters the gap between the end surface of the rotor 3 and the casing 1 during the kneading operation, the kneaded material is caught by the step 9. At the same time, it is guided in the peripheral direction as the rotor rotates. Further, since the step 9 is formed up to the peripheral edge of the rotor 3, the kneaded material sequentially returns into the kneading chamber, and the kneaded material can be prevented from entering the gap between the casing 1 and the dust seal 22.

なお、図８および図９の段差９は、ロータ３の半径方向に対して平行に形成されているが、半径方向に対して回転方向手前側に若干傾斜した直線状に設けてもよい。また、傾斜面１０はロータ３の半径方向に対してダストシール２２の外周面からロータ３の周縁部に行くに連れて、ケーシング１との隙間が広がる方向に傾斜していると効果的である。   8 and 9 is formed in parallel to the radial direction of the rotor 3, it may be provided in a straight line slightly inclined to the front side in the rotational direction with respect to the radial direction. In addition, it is effective that the inclined surface 10 is inclined with respect to the radial direction of the rotor 3 in a direction in which a gap with the casing 1 increases from the outer peripheral surface of the dust seal 22 toward the peripheral portion of the rotor 3.

その他の検討例２に係る混練機では、ロータ３の端面に段差９と傾斜面１０を設けた例で説明しているが、ケーシング１の上記ロータ３の端面と相対する面に段差９と傾斜面１０を設ける場合、傾斜面１０は段差９の頂部からロータの回転方向２１に進むにつれて徐々に低くなり段差９の下部に達するよう形成される。   In the kneading machine according to the other examination example 2, the step 9 and the inclined surface 10 are provided on the end surface of the rotor 3. However, the step 9 and the inclined surface 10 are inclined on the surface of the casing 1 facing the end surface of the rotor 3. When the surface 10 is provided, the inclined surface 10 is formed so as to gradually become lower from the top of the step 9 in the rotational direction 21 of the rotor and reach the lower part of the step 9.

次に本発明の実施の形態を、図１０および図１１により説明する。図１０および図１１において、１は混練機のケーシング、２は混練室、３は混練用のロータ、４は該ロータ３の軸、５は該ロータ３の突出部、２１はロータ３の回転方向、２２はダストシール、そして１１は該ロータの端面に設けられた段差である。なお、図１０および図１１では省略されているが、その他の構成は図１２に示す従来例と同様であり、従来例と同様の混練作業が行なわれる。   Next, an embodiment of the present invention will be described with reference to FIGS. 10 and 11, 1 is a casing of the kneader, 2 is a kneading chamber, 3 is a rotor for kneading, 4 is a shaft of the rotor 3, 5 is a protrusion of the rotor 3, and 21 is a rotation direction of the rotor 3. , 22 is a dust seal, and 11 is a step provided on the end face of the rotor. Although omitted in FIGS. 10 and 11, other configurations are the same as in the conventional example shown in FIG. 12, and the same kneading operation as in the conventional example is performed.

図１０および図１１の段差１１は、ロータ３の突出部５の根元部分に円形に設けられており、ケーシング１とロータ３端面との隙間は突出部５の根元部分から先端部分までが広く形成されている。   The step 11 in FIGS. 10 and 11 is provided in a circular shape at the root portion of the protrusion 5 of the rotor 3, and the gap between the casing 1 and the end surface of the rotor 3 is wide from the root portion to the tip portion of the protrusion 5. Has been.

図１０および図１１の段差１１によれば、混練作業に伴なってロータ３端面の突出部５とケーシング１との隙間に混練物が侵入しても、突出部５の根元部分から先端部分までの隙間が広いために、侵入してきた混練物の圧力が低下する。よって混練物は上記隙間より狭い段差１１の内側部分まで入り込まず混練室２内に戻るから、ケーシング１とダストシール２２との隙間にまで混練物が侵入するのを防止することができる。   10 and 11, even if the kneaded material enters the gap between the protrusion 5 on the end face of the rotor 3 and the casing 1 during the kneading operation, from the root portion to the tip portion of the protrusion 5. Since the gap is wide, the pressure of the infiltrated kneaded product decreases. Therefore, since the kneaded material does not enter the inner portion of the step 11 narrower than the gap and returns to the kneading chamber 2, it is possible to prevent the kneaded material from entering the gap between the casing 1 and the dust seal 22.

なお、図１０および図１１に示す段差１１の高低差は混練物の物性等により、隙間に侵入した際の抵抗等を考慮して適宜決定され、例えばゴムであれば２ｍｍ程度が適当である。また、段差１１の形状は円形に限定されず、直線状に設けてもよい。   The height difference of the step 11 shown in FIGS. 10 and 11 is appropriately determined in consideration of the resistance when entering the gap, depending on the physical properties of the kneaded material. For example, about 2 mm is appropriate for rubber. Further, the shape of the step 11 is not limited to a circle, and may be provided in a straight line.

本発明の実施の形態に係る混練機では、ロータ３の端面に段差１１を設けてケーシング１とロータ３端面との隙間を広くした例を説明しているが、ケーシング１の上記ロータ３端面と相対する面に段差を設けて隙間を広くする場合、ロータ３の回転によるロータ３の突出部５の軌跡に対応する部分にリング状の溝を形成すれば良い。   In the kneader according to the embodiment of the present invention, an example in which the step 11 is provided on the end surface of the rotor 3 to widen the gap between the casing 1 and the end surface of the rotor 3 is described. In the case where the gap is widened by providing a step on the opposing surfaces, a ring-shaped groove may be formed in a portion corresponding to the locus of the protrusion 5 of the rotor 3 due to the rotation of the rotor 3.

参考例１に係る混練機端部の概略構造図である。3 is a schematic structural diagram of an end portion of a kneader according to Reference Example 1. FIG. 図１のＩＩ−ＩＩ線矢視図である。It is the II-II arrow directional view of FIG. 参考例１に係る混練機のロータ端面において、図１、図２と異なる溝配置の一例を示す図である。FIG. 3 is a view showing an example of a groove arrangement different from those in FIGS. 1 and 2 on the rotor end surface of the kneader according to Reference Example 1. 参考例２に係る混練機端部の概略構造図である。6 is a schematic structural diagram of an end portion of a kneader according to Reference Example 2. FIG. 図４のＶ−Ｖ線矢視図である。FIG. 5 is a view taken along line VV in FIG. 4. その他の検討例１に係る混練機端部の概略構造図である。It is a schematic structure figure of the kneader end concerning other example 1 of examination. 図６のＶＩＩ−ＶＩＩ線矢視図である。It is a VII-VII arrow directional view of FIG. その他の検討例２に係る混練機端部の概略構造図である。It is a schematic structure figure of the kneader end concerning other example 2 of examination. 図８のＩＸ−ＩＸ線矢視図である。It is the IX-IX line arrow directional view of FIG. 本発明の実施の形態に係る混練機端部の概略構造図である。It is a schematic structure figure of the kneader end concerning an embodiment of the invention. 図１０ＸＩ−ＸＩ線矢視図である。FIG. 10 is a view taken along line XI-XI. 従来の一般的な混練機の断面図である。It is sectional drawing of the conventional common kneading machine. 従来の混練機端部の概略構造図である。It is a schematic structure figure of the conventional kneader end.

符号の説明Explanation of symbols

１ ケーシング
２ 混練室
３ ロータ
４ ロータ軸
５ 突出部
６ａ、６ｂ 溝
７ 凸部
８ ブラシ状シール部材
９ 段差
１０ 傾斜面
１１ 段差
２１ ロータ回転方向
２２ ダストシール DESCRIPTION OF SYMBOLS 1 Casing 2 Kneading chamber 3 Rotor 4 Rotor shaft 5 Protruding part 6a, 6b Groove 7 Protruding part 8 Brush-like sealing member 9 Step 10 Inclined surface 11 Step 21 Rotor rotating direction 22 Dust seal

Claims (1)

混練物を入れるケーシングと、同ケーシングの内部で回転する混練用ロータとを有する混練機において、前記ロータは円状部と前記円状部の外周から径方向に突出した突出部とを有し、前記ロータの突出部と前記ケーシングとの隙間を前記ロータの円状部と前記ケーシングとの隙間より広く形成し、前記ロータの突出部の側面は平面であることを特徴とする混練機。 In a kneader having a casing for containing a kneaded product and a kneading rotor that rotates inside the casing, the rotor has a circular portion and a protruding portion that protrudes in the radial direction from the outer periphery of the circular portion, The kneading machine is characterized in that a gap between the protruding portion of the rotor and the casing is formed wider than a gap between the circular portion of the rotor and the casing, and a side surface of the protruding portion of the rotor is flat .
JP2008113412A 2008-04-24 2008-04-24 Kneading machine Expired - Fee Related JP4981738B2 (en)

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JP2000205362A Division JP4335418B2 (en) 2000-07-06 2000-07-06 Kneading machine

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5735390Y2 (en) * 1977-02-25 1982-08-05
JPH07256635A (en) * 1994-03-25 1995-10-09 Mitsubishi Heavy Ind Ltd Device for preventing residue from being mixed of kneader

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