JP2004025000A

JP2004025000A - Mixing apparatus

Info

Publication number: JP2004025000A
Application number: JP2002183752A
Authority: JP
Inventors: Motonori Tanaka; 田中　元宣; Toshiya Ono; 大野　敏也
Original assignee: Aichi Electric Co Ltd
Current assignee: Aichi Electric Co Ltd
Priority date: 2002-06-25
Filing date: 2002-06-25
Publication date: 2004-01-29

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing apparatus which can evenly and uniformly stir and/or mix a plurality of types of powder raw materials and in which a rotary drum can be smoothly and/or easily assembled and disassembled with respect to the mixing apparatus. <P>SOLUTION: The mixing apparatus 1 is provided with a rotary means 4 for rotating a rotary drum 2 storing a plurality of types of powder raw materials, a swinging and/or contra-rotating means 3 for swinging and/or contra-rotating the rotary drum 2 in a prescribed range of the angle, a pair of holding means 5 for holding rotary drum 2 between the rotary means 4 and a rotation wheel 42 and a crushing means 6 for crushing agglomerates formed in the powder raw materials at the time of stirring and/or mixing. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、回転ドラムを回転・揺動させることにより、該回転ドラム内に収納した複数種類の粉体原料を攪拌・混合する混合装置の改良に関する。
【０００２】
【従来の技術】
近年、複数種類の粉体原料を攪拌・混合する混合装置として、例えば、基台に立設した一対の支柱に揺動可能に支承される矩形状の揺動台と、前記揺動台をシーソーの如く揺動させる揺動機構と、前記揺動台上に取付けられて回転ドラムを回転可能に乗載する回転車輪と、前記回転車輪を回転駆動する駆動手段（電動機）等を具備して概略構成した混合装置が種々開発されている。
【０００３】
前記構成の混合装置において、複数種類の粉体原料を攪拌・混合する場合は、回転車輪上に乗載した回転ドラム内に、攪拌・混合を行う複数種類の粉体原料を収納した状態で、駆動手段を駆動することにより前記回転ドラムを回転させるとともに、揺動機構を駆動することにより回転ドラムをシーソーの如く揺動させて、前記複数種類の粉体原料を、回転ドラムの周方向への掻上げ動作と、長さ方向への往復移動とによって攪拌・混合するようにしていた。
【０００４】
【発明が解決しようとする課題】
然るに、前記のように回転ドラム内に収納した複数種類の粉体原料を攪拌・混合する場合、前記粉体原料が例えば、攪拌・混合前の段階において湿気を帯びた状態となっていると、回転ドラム内に収納した状態で攪拌・混合を行うことにより、回転ドラムの周方向や長さ方向へ移動する度に塊が形成されることとなる結果、前記複数種類の粉体原料をムラなく均一に攪拌・混合することが困難になるという問題があった。
【０００５】
このため、前記のように粉体原料中に塊が生じた場合には、混合作業の終了後、前記粉体原料の中から塊を取除くか、あるいは、塊を例えば金網の上で潰しながら篩にかけて混合を終えた粉体原料に混ぜる等していたので、粉体原料の混合作業には非常に手間と時間がかかり面倒であった。
【０００６】
また、前記構成の混合装置において、複数本の回転ドラムを使用して攪拌・混合作業を連続して行うために、前記回転ドラムを混合装置に対して乗降させる場合、その作業はクレーン等の吊下手段を使用して行っていたので、前記回転ドラムの乗降作業には手間と時間がかかるとともに、前記回転ドラム内には粉体原料が収納されているため、前記作業は安全性を十分に考慮して行わなければならず、この結果、作業効率が非常に悪かった。
【０００７】
本発明は、前記の問題点に鑑み、複数種類の粉体原料をムラなく均一に攪拌・混合することが可能で、かつ、回転ドラムの混合装置に対する乗降作業を円滑・容易に行うことが可能な混合装置を提供することを目的とする。
【０００８】
本発明は、前記の課題を解決するために、複数種類の粉体原料を収納した回転ドラムを回転させる回転手段と、前記回転ドラムを所定の角度範囲で揺動・反転させる揺動・反転手段と、前記回転ドラムを回転手段との間で抱持するシリンダ駆動の一対の抱持手段と、攪拌・混合時に粉体原料中に生じる塊を解砕するための解砕手段とを具備して構成したことを特徴とする。
【０００９】
請求項２記載の発明は、請求項１記載の混合装置において、前記解砕手段は、回転ドラムの一方端側に配設した回転継手と、前記回転継手に回転可能な状態で挿通した回転軸と、前記回転継手を貫通して回転ドラム内に突出する回転軸の一方端に取付けられて、粉体原料中に生じる塊を解砕する解砕羽根と、前記回転継手を貫通して回転ドラムの外に突出する回転軸の他方端に伝達手段を介して連結されて、前記解砕羽根を回転駆動する駆動手段とを具備して構成したことを特徴とする。
【００１０】
請求項３記載の発明は、請求項２記載の混合装置において、前記伝達手段は、回転軸と駆動手段とを分離可能な状態で連結するように構成したことを特徴とする。
【００１１】
請求項４記載の発明は、請求項２または３記載の混合装置において、前記伝達手段は、回転軸の他方端及び駆動手段の駆動軸にそれぞれ止着したプーリー間に取外し可能に巻掛けられたベルトと、前記ベルトに所定の張力を付与するための付勢手段とを具備して構成したことを特徴とする。
【００１２】
請求項５記載の発明は、請求項２または３記載の混合装置において、前記伝達手段は、回転軸の他方端に止着した第１の摩擦車と、駆動手段の駆動軸とベルト等を介して駆動可能に連結され、前記第１の摩擦車と摺接する一対の第２の摩擦車と、前記一対の第２の摩擦車を互いに相対する方向に付勢するための付勢手段とを具備して構成したことを特徴とする。
【００１３】
請求項６記載の発明は、請求項２または３記載の混合装置において、前記伝達手段は、回転軸の他方端と駆動手段の駆動軸とを接離可能な状態で連結する軸継手手段から成ることを特徴とする。
【００１４】
請求項７記載の発明は、請求項２記載の混合装置において、前記回転継手には、該回転継手側から回転ドラム内に向けてエアを噴射することにより、回転継手内への粉体原料の侵入を防ぐようにした侵入防止手段を具備して構成したことを特徴とする。
【００１５】
請求項８記載の発明は、請求項７記載の混合装置において、前記侵入防止手段には、抱持手段を駆動するシリンダに供給されるエアの一部を分岐・供給するように構成したことを特徴とする。
【００１６】
請求項９記載の発明は、請求項２記載の混合装置において、前記解砕手段には、回転継手の機能が低下した場合に発生する荷重を検出するための荷重検出手段を具備して構成したことを特徴とする。
【００１７】
本発明においては、複数種類の粉体原料を収納した回転ドラムを回転させる回転手段と、前記回転ドラムを所定の角度範囲で揺動・反転させる揺動・反転手段と、前記回転ドラムを回転手段との間で抱持するシリンダ駆動の一対の抱持手段と、攪拌・混合時に粉体原料中に生じる塊を解砕するための解砕手段とを具備して混合装置を構成したので、前記回転ドラムの混合装置に対する乗降作業を迅速・容易に、かつ、安全に行うことができる。また、粉体原料中に生じた塊は、解砕手段によって良好に解砕処理することができるので、前記粉体原料をムラなく均一に攪拌・混合することが可能となる。
【００１８】
【発明の実施の形態】
以下、本発明の実施の形態を、図１ないし図１６を参照しながら説明する。図１は本発明の混合装置１を示す正面図、図２は本発明の混合装置１を示す側面図をそれぞれ示し、前記混合装置１は、複数種類の粉体原料を収納する中空円筒状の回転ドラム２と、前記回転ドラム２を所定の角度範囲で揺動・反転させる揺動・反転手段３と、前記回転ドラム２を回転させる回転手段４と、前記回転ドラム２を回転手段４の後述する回転車輪４２との間で抱持する抱持手段５と、攪拌・混合時に粉体原料中に生じる塊を解砕するための解砕手段６とを具備して概略構成されている。
【００１９】
前記回転ドラム２には、図１，２で示すように、その一方端側（図２の右側）に粉体原料の投入・排出口２ａが形成されており、また、他方端側（図２の左側）には、前記解砕手段６が配設されている。２ｃ，２ｃは回転ドラム２の胴央部に所定の間隔を設けた状態で周設した一対の係止突起である。
【００２０】
次に、揺動・反転手段３の構成について説明する。図１，２において、３１は山形鋼等の鋼材を用いて矩形状に枠組みした揺動台で、その左右両端の中央から外方に向けて突設した支軸３２ａ，３２ｂを、基台３３に立設した支柱３４，３４上の軸受３４ａ，３４ａに挿通させることにより、前記揺動台３１は支柱３４，３４に対して揺動・反転可能に取付けられる。
【００２１】
３５は基台３３上に設置した揺動・反転用電動機で、ベルト３６ａを介して減速装置３７の入力端と駆動可能に連結されており、また、前記減速装置３７の出力端はチェーン３６ｂを介して揺動台３１に突設した一方の支軸３２ａ（図１の左側）に止着したスプロケット３８と駆動可能に連結されており、前記揺動・反転用電動機３５の回転を減速装置３７によって減速させた状態で支軸３２ａに伝達することにより、前記揺動台３１を支軸３２ａ，３２ｂを中心として所定の角度範囲で揺動・反転させる。
【００２２】
３９は揺動台３１に突設した他方の支軸３２ｂ（図１の右側）と連結されたロータリーエンコーダ等からなる角度検出手段であり、前記揺動台３１の揺動・反転角度に対応したパルス信号を図示しない制御装置に出力する。この結果、揺動・反転用電動機３５は、前記パルス信号に基づいて制御装置から出力される切換信号により、その回転方向が切換制御される。
【００２３】
次に、回転手段４の構成について説明する。図１，２において、４１は揺動台３１の前後方向（図２の左右方向）に取付けた軸受３１ａ，３１ａに、前記揺動台３１の支軸３２ａ，３２ｂと直交する状態で回転自在に挿通した一対の回転軸であり、前記回転軸４１，４１の両端部には、回転ドラム２を横倒しの状態で回転自在に乗載する回転車輪（摩擦車）４２，４２が取付けられている。
【００２４】
４３は揺動台３１の下側面に取付けた回転用電動機で、チェーン４５を介して回転軸４１の長さ方向（図２の左右方向）の略中央部に止着したスプロケット４４，４４と駆動可能に連結されており、前記回転用電動機４３の回転を回転軸４１に伝達して回転車輪４２，４２を回転させることにより、前記回転車輪４２，４２に乗載した回転ドラム２を所定速度で回転させる。
【００２５】
次に、抱持手段５の構成について説明する。図１ないし図３において、５１は揺動台３１の左右方向（図１の左右方向）の両端部に立設した一対のアーム固定台である。前記アーム固定台５１の長さ方向（図２の左右方向）の中央部には、アーム支柱５２が立設されており、前記アーム支柱５２の先端部には、図３で示す如く先端部に回転輪５３ａを回転可能に取付けた抱持アーム５３が、枢軸５２ａを介して回動可能に取付けられている。
【００２６】
５４ａ，５４ｂは基部をアーム支柱５２の基端側に、かつ、ピストンロッドの先端部を抱持アーム５３の基端側に固定したシリンダであり、前記シリンダ５４ａ，５４ｂは、図４で示すように、エア供給管ａ１，ａ２、ｂ１，ｂ２、ｃの途中に空気圧調整ユニットＵ，切換弁Ｖ１等を配設した状態でエア供給源Ｐに接続されている。そして、前記切換弁Ｖ１を切換操作して前記シリンダ５４ａ，５４ｂを進・退駆動させることにより、抱持アーム５３を枢軸５２ａを中心として回動させ、回転ドラム２を回転車輪４２と回転輪５３ａとの間で抱持したり（図３に２点鎖線で示す状態）、回転ドラム２の抱持状態を解除したり（図３に実線で示す状態）する。
【００２７】
なお、図３において、５５はアーム支柱５２の回転ドラム２と対向する側の面に回転可能な状態で取付けた係止ローラであり、前記回転ドラム２の胴央部外周に所定の間隔を設けた状態で周設した一対の係止突起２ｃ，２ｃ間に係合・摺接させることにより（図２参照）、前記回転ドラム２が回転車輪４２，４２上から滑落するのを防いでいる。
【００２８】
次に、解砕手段６の構成について説明する。図５，６において、６１は回転ドラム２の他方端側（図５の右側）に配設した回転継手で、前記回転継手６１は、図６で示すように、中空円筒状に形成した固定筒６１ｂと、前記固定筒６１ｂの一方端側（図６の左側）の外周面にシール部材Ｓ１，Ｓ２を介して回転自在に嵌着した蓋板６１ａと、前記固定筒６１ｂの他方端側（図６の右側）の外周面に軸受６１ｄを介して回転自在に嵌着され、かつ、前記蓋板６１ａに締着・固定される中空状の回転筒６１ｃと、長さ方向（図６の左右方向）の両端部に軸受６１ｆを嵌着した状態で固定筒６１ｂの一方端側（図６の右側）に嵌合・固定した支持筒６１ｅと、シール部材Ｓ３，Ｓ４を収容した状態で固定筒６１ｂの他方端側（図６の左側）に挿入・螺着したシール筒６１ｇとを具備して構成されており、前記蓋板６１ａを回転ドラム２の他方端側の開口部２ｄに締着・固定することにより、前記回転継手６１は回転ドラム２の他方端側に配設される。
【００２９】
つづいて、図５，６において、６２は回転継手６１の固定筒６１ｂの内周面に、支持筒６１ｅに嵌着した軸受６１ｆ及びシール筒６１ｇに収容したシール部材Ｓ３，Ｓ４を介して回転自在に挿通した回転軸であり、前記回転軸６２と回転ドラム２とは、回転継手６１の固定筒６１ｂの内・外周側において、それぞれ個別に、かつ、異なる回転速度で回転させることが可能となっている。
【００３０】
なお、前記回転軸６２は、回転ドラム２に比して回転速度が速い関係上、前記回転軸６２が挿通されるシール筒６１ｇ内に粉体原料が侵入すると、シール部材Ｓ４の摩耗・劣化が早期に進展しやすい。このため、前記シール筒６１ｇ及びシール筒６１ｇが挿入・螺着される固定筒６１ｂには、前記シール筒６１ｇ内に粉体原料が侵入するのを防ぐための手段（侵入防止手段）が具備されている。
【００３１】
前記手段は、図７，８で示すように、固定筒６１ｂの外周側に長さ方向（図７の左右方向）に沿って、該固定筒６１ｂを貫通しない範囲で穿設した第１のエア流路Ａ１と、前記固定筒６１ｂに第１のエア流路Ａ１と直交する方向（周方向）に向けて穿設した第２のエア流路Ａ２と、前記固定筒６１ｂとシール筒６１ｇとの間に周設した第３のエア流路Ａ３と、前記シール筒６１ｇの内周側に長さ方向に沿って形成した第４のエア流路Ａ４と、前記シール筒６１ｇに第３のエア流路Ａ３と第４のエア流路Ａ４とを連通するようにして（周方向に向けて）穿設した第５のエア流路Ａ５とによって構成されている。
【００３２】
そして、前記第１のエア流路Ａ１は、図４で示すように、エア供給管ｄの途中に減圧弁Ｖ２等を配設した状態で、抱持手段５のシリンダ５４ａ，５４ｂにエアを供給するためのエア供給管ｃに分岐・接続されており、前記減圧弁Ｖ２によって所定の圧力に減圧されたエアは、第１のエア流路Ａ１→第２のエア流路Ａ２→第３のエア流路Ａ３→第５のエア流路Ａ５→第４のエア流路Ａ４を経て、回転軸６２とシール筒６１ｇに収容したシール部材Ｓ３との間に形成される微小な隙間から、回転ドラム２内に向けて噴射される結果、前記シール筒６１ｇ内に粉体原料が侵入するのを良好に防ぐことができる。
【００３３】
次に、図５，６，９において、６３は略Ｖ字状の羽根部材と平板状の羽根部材とを十字状に組合せる（図９参照）ことによって形成した解砕羽根であり、回転ドラム２内に突出する回転軸６２の一方端側に取付けられている。６４は揺動台３１の後方端（図５の右側）から延設した設置台３１ｂ上に設置した駆動手段（電動機）であり、回転ドラム２の外に突出する回転軸６２他方端側に、伝達手段６５を介して分離可能な状態で連結されている。
【００３４】
前記伝達手段６５は、図５，１０で示すように、回転軸６２の他方端（図５の右側）に、該回転軸６２に対して回転不能な状態で止着した第１のプーリー６５ａと、駆動手段６４の駆動軸６４ａに、該駆動軸６４ａに対して回転不能に止着した第２のプーリー６５ｂと、前記第１，第２のプーリー６５ａ，６５ｂ間に取外し可能な状態で巻掛けられたベルト６５ｃと、設置台３１ｂ上に立設した固定壁６５ｅに傾倒可能な状態で取付けられて、前記ベルト６５ｃに所定の張力を付与するための付勢手段６５ｄとを具備して構成されている。
【００３５】
そして、前記第１，第２のプーリー６５ａ，６５ｂ間にベルト６５ｃを巻掛けるとともに、前記ベルト６５ｃに付勢手段６５ｄによって所定の張力を付与した状態で駆動手段６４を駆動すると、その回転は第２のプーリー６５ｂ→ベルト６５ｃ→第１のプーリー６５ａ→回転軸６２を経て解砕羽根６３に伝達され、前記解砕羽根６３を所定の速度で回転させることにより、攪拌・混合時に粉体原料中に生じる塊を解砕することができる。
【００３６】
なお、図５において、６６は回転継手６１の固定筒６１ｂと蓋板６１ａとの間に介在させたシール部材Ｓ１，Ｓ２が劣化・損傷し、前記固定筒６１ｂと回転筒６１ｃとの間に介在させた軸受６１ｄ内に粉体原料が侵入することにより、前記軸受６１ｄの機能が低下した場合に、固定筒６１ｂが回転ドラム２とともに回動しようとする際の荷重を検出するための荷重検出手段である。前記荷重検出手段６６は、図５，６，１１で示すように、固定筒６１ｂから突出する支持筒６１ｅの端部下側面に垂設した回止板６６ａ（図６参照）と、設置台３１ｂ上に固定台６６ｂ_１を介して設置した固定板６６ｂに前記回止板６６ａと対向する状態で取付けた検出部材６６ｃとによって構成されている。
【００３７】
また、前記検出部材６６ｃは、図１１で示すように、一方端側（図１１の右側）を固定板６６ｂに固定した収容箱体６６ｄと、前記収容箱体６６ｄに軸方向（図１１の左右方向）に沿って移動可能な状態で挿通した検出ピン６６ｅと、前記検出ピン６６ｅの途中に凹設した凹陥部６６ｅ_１に嵌着したリング６６ｆと、前記収容箱体６６ｄ内に軸方向（図１１の左右方向）に沿って移動可能な状態で収容した検出片６６ｇと、前記収容箱体６６ｄの外周面に検出ピン６６ｅと直交する状態で取付けられて前記検出片６６ｇを検出するセンサ６６ｈと、前記収容箱体６６ｄの他方端（図１１の左側）に開口した開口部に螺着されて前記検出ピン６６ｅを支承する支持部材６６ｉと、前記検出片６６ｇと支持部材６６ｉとの間に介挿されて前記検出片６６ｇを固定板６６ｂ側（図１１の右側）に押圧・付勢するばね部材６６ｊとを具備して構成されている。
【００３８】
そして、回転継手６１の固定筒６１ｂが、回転ドラム２の回転に伴って回転しようとすると、支持筒６１ｅに垂設した回止板６６ａが、回転ドラム２の回転方向と同方向に回動して、図１２で示すように、検出部材６６ｃの検出ピン６６ｅを押圧する。前記検出ピン６６ｅが押圧されることにより、該検出ピン６６ｅの凹陥部６６ｅ_１に嵌着されているリング６６ｆは、前記凹陥部６６ｅ_１から外れて外方に拡開され（図１２参照）、該リング６６ｆと当接している検出片６６ｇを、ばね部材６６ｊの付勢力に抗してセンサ６６ｈと対向する位置まで押圧する結果、前記検出片６６ｇはセンサ６６ｈによって検出される。これにより、前記センサ６６ｈからは、図示しない制御装置に対して検出信号が出力されるとともに、前記制御装置は、この検出信号を受けて回転用電動機４３を停止させる。
【００３９】
次に、本発明の混合装置１において、複数種類の粉体原料を攪拌・混合する場合について説明する。はじめに、投入・排出口２ａ側を上向きとした状態で内部に複数種類の粉体原料を投入した回転ドラム２を、図１３で示すように、搬送台車１０に乗載した状態で混合装置１の回転車輪４２と近接する位置まで搬送し、その胴央部外周に周設した一対の係止突起２ｃ，２ｃ間に、抱持手段５の係止ローラ５５を係合・摺接させる（図１４参照）。これにより、解砕手段６の伝達手段６５を構成する第１，第２のプーリー６５ａ，６５ｂは常に平行度を一定に保持することができる。
【００４０】
つづいて、抱持手段５のシリンダ５４ａ，５４ｂ（図１４においてはシリンダ５４ａのみを図示）を駆動することにより、抱持アーム５３を枢軸５２ａを中心として、図３に実線で示す位置から図３に２点鎖線で示すように、徐々に回転ドラム２側に回動させ、前記回転ドラム２を回転車輪４２と回転輪５３ａとの間で抱持する（図１，１４参照）。そして、前記のように回転ドラム２を抱持したら、図１４で示すように搬送台車１０を撤去する。
【００４１】
この後、揺動・反転用電動機３５を駆動して（例えば、正転させて）、その回転を減速装置３７によって減速させた状態で揺動台３１に伝達し、回転車輪４２を介して前記揺動台３１に乗載した回転ドラム２を、図１４で示すように起立している状態から、図２で示すように横倒しの状態となるように徐々に反転させる。そして、回転ドラム２が横倒しの状態となると（図２参照）、揺動台３１の支軸３２ｂに連結した角度検出手段３９（図１参照）から所定のパルス信号が図示しない制御装置に出力されるので、前記制御装置はこれを受けて揺動・反転用電動機３５に停止指令信号を出力して、前記揺動・反転用電動機３５を停止させる。
【００４２】
前記のように、回転ドラム２を起立した状態から横倒しの状態に反転させたら、つづいて、解砕手段６の駆動手段６４と、一方端に解砕羽根６３を取付けた回転軸６２の他方端とを伝達部材６５を介して駆動可能に連結する。即ち、図５，１０で示すように、前記回転軸６２の他方端に止着した第１のプーリー６５ａと、駆動手段６４の駆動軸６４ａに止着した第２のプーリー６５ｂとの間にベルト６５ｃを巻掛けるとともに、固定壁６５ｅに取付けた付勢手段６５ｄを、図１０に２点鎖線で示す状態から、図１０に実線で示すように時計方向に傾倒させ、前記ベルト６５ｃに所定の張力を付与する。
【００４３】
この結果、前記駆動手段６４の駆動力はベルト６５ｃを介して良好に回転軸６２に伝達され、前記回転軸６２に取付けた解砕羽根６３を回転させることが可能となる。また、これと同時に、回転継手６１の固定筒６１ｂに設けた第１のエア流路Ａ１にエア供給管ｄを接続する（図６，７参照）。
【００４４】
次に、回転用電動機４３を駆動して、その回転をチェーン４５を介して回転軸４１に伝達し、前記回転軸４１に止着した回転車輪４２に乗載されている回転ドラム２を、例えば、図１における反時計方向に回転させる。また、これと同時に、解砕手段６の駆動手段６４を駆動して、その回転をベルト６５ｃを介して回転軸６２に伝達し、前記回転軸６２の一方端に取付けた解砕羽根６３を回転ドラム２の回転方向とは反対方向（即ち、図１，９における時計方向）に回転させる。
【００４５】
このとき、解砕手段６の回転軸６２は、回転継手６１の固定筒６１ｂの内周面に回転自在に挿通されており、また、回転ドラム２は回転継手６１の固定筒６１ｂの外周面に回転自在に嵌着した蓋板６１ａと締着・固定されている関係上、前記回転ドラム２と回転軸６２とは、回転継手６１の固定筒６１ｂの内・外周側において、個別に回転させることができるものである。
【００４６】
更に、前記回転ドラム２及び解砕羽根６３を回転させるのと同時に、揺動・反転用電動機３５を駆動して（例えば、正転させて）、その回転を減速装置３７により減速させた状態で揺動台３１に伝達し、回転ドラム２を横倒しの状態から投入・排出口２ａ側が下向きとなるように徐々に傾斜させる。そして、回転ドラム２が図２において、例えば、時計方向に２０°傾斜した状態となると、角度検出手段３９から制御装置（図示せず）に所定のパルス信号が出力されるので、前記制御装置はこれを受けて揺動・反転用電動機３５の回転方向を切換える指令信号を出力し、前記揺動・反転用電動機３５をこれまでとは逆方向に回転させる（即ち、逆転させる）。
【００４７】
前記揺動・反転用電動機３５の回転方向が切換えられることにより、回転ドラム２は投入・排出口２ａ側を下向きに傾斜させた状態から、今度は前記投入・排出口２ａ側が上向きとなるように徐々に傾斜する。そして、回転ドラム２が図２において、例えば、反時計方向に２０°傾斜した状態となると、角度検出手段３９から制御装置（図示せず）に所定のパルス信号が出力されるので、前記制御装置はこれを受けて揺動・反転用電動機３５の回転方向を切換える指令信号を出力し、前記揺動・反転用電動機３５の回転方向を再度切換える（即ち、正転させる）。以後、予め設定した混合時間が経過するまで、前記動作を繰り返し実行することにより、回転ドラム２を所定の角度範囲でシーソーの如く揺動させる。
【００４８】
前記のように、回転ドラム２を回転車輪４２を介して回転させるとともに、前記回転ドラム２を回転車輪４２を介して乗載した揺動台３１を揺動・反転用電動機３５を正・逆回転させて揺動することにより、前記回転ドラム２内に収納した粉体原料は、回転ドラム２の回転方向（周方向）に掻上げられるとともに、回転ドラム２内をその軸方向（長さ方向）において往復移動する結果、良好に攪拌・混合を行うことができる。
【００４９】
また、回転ドラム２の他方端側には解砕手段６が配設されているので、前記回転ドラム２内に収納した粉体原料が湿気を帯びている状態であっても、前記粉体原料が解砕手段６の解砕羽根６３と衝接することにより、攪拌・混合時に生じる塊は良好に解砕処理されるため、前記粉体原料をムラなく均一に攪拌・混合することができる。
【００５０】
しかも、解砕手段６を構成する回転継手６１のシール筒６１ｇからは、その内部に収容したシール部材Ｓ３と回転軸６２との間に形成される微小な隙間を通って、常時エアが噴射されているため、前記シール筒６１ｇ内に粉体原料が侵入するのを良好に防ぐことが可能となり、この結果、シール筒６１ｇ内に収容され、回転軸６２と摺接するシール部材Ｓ４が、粉体原料の侵入によって早期に摩耗・劣化して損傷するのを良好に回避することができる。
【００５１】
更に、前記回転ドラム２は、回転車輪４２と抱持手段５の抱持アーム５３に具備した回転輪５３ａとの間で抱持され、かつ、その胴央部中央に周設した係止突起２ｃ，２ｃ間に係止ローラ５５を係合・摺接した状態で回転しているので、前記のように揺動させても揺動台３１から脱落することなく、安全に攪拌・混合を行うことができる。
【００５２】
次に、予め設定した混合時間が経過したら、回転用電動機４３及び解砕手段６の駆動手段６４を停止させるとともに、角度検出手段３９から出力されるパルス信号に基づき、回転ドラム３が横倒しの状態となった時点で揺動・反転用電動機３５を停止させる。
【００５３】
つづいて、回転ドラム２が横倒しの状態となった時点で、該回転ドラム２の揺動を停止したら、解砕手段６の駆動手段６４と回転軸６２との連結状態を解除する。即ち、ベルト６５ｃに張力を付与している付勢手段６５ｄを、図１０に実線で示す状態から図１０に２点鎖線で示すように反時計方向に回動させることにより、ベルト６５ｃに対する張力の付与を解除し、この状態で、前記ベルト６５ｃを第１，第２のプーリー６５ａ，６５ｂから取外す。また、これと同時に、回転継手６１の固定筒６１ｂに設けた第１のエア流路Ａ１からエア供給管ｄを取外す。
【００５４】
前記のように、解砕手段６の駆動手段６４と回転軸６２との連結状態を解除したら、揺動・反転用電動機３５を駆動して（例えば、正転させて）、その回転を減速装置３７によって減速させた状態で揺動台３１に伝達し、前記揺動台３１に回転車輪４２を介して乗載した回転ドラム２を、図２で示す横倒しの状態から図１５で示すように投入・排出口２ａ側が下向きとなるように徐々に反転させる。そして、図１５で示すように、回転ドラム２が投入・排出口２ａ側を下向きとした状態で起立したら、角度検出手段３９（図１参照）から制御装置（図示せず）に所定のパルス信号が出力されるので、これを受けて前記制御装置は、揺動・反転用電動機３５に停止指令信号を出力し、前記揺動・反転用電動機３５を停止させる。
【００５５】
前記投入・排出口２ａが下向きとなるように起立させた回転ドラム２は、図１６で示すように搬送台車１０に乗載する。この後、抱持手段５のシリンダ５４ａ，５４ｂを駆動し、抱持アーム５３を枢軸５２ａを中心として、図３に２点鎖線で示す状態から図３に実線で示すように、徐々に回転ドラム２から遠ざかる方向に回動させ、前記回転ドラム２の抱持を解除する。前記のように、抱持手段５による抱持状態が解除された回転ドラム２は、搬送台車１０に乗載した状態（図１６参照）で排出工程へ搬送される。以降、粉体原料の攪拌・混合を行う場合は、前記の動作を繰り返せばよい。
【００５６】
前記のように、本発明の混合装置１には解砕手段６を具備したので、回転ドラム２内において攪拌・混合される粉体原料中に、湿気等の影響によって生じる塊は、前記回転ドラム２内において回転駆動する解砕手段６の解砕羽根６３と衝接することによって良好に解砕処理することが可能となり、この結果、前記粉体原料をムラなく均一に攪拌・混合することができる。
【００５７】
また、前記解砕手段６は、解砕羽根６３を一方端に取付けた回転軸６２と駆動手段６４とを、伝達手段６５による連結状態を解除することにより、分離可能に構成されているので、混合装置１に対して回転ドラム２を乗降させるような場合においても、前記伝達手段６５を構成するベルト６５ｃに付勢手段６５ｄによって所定の張力を付与して駆動手段６４の駆動力を回転軸６２に伝達したり、前記付勢手段６５ｄによるベルト６５ｃに対する張力の付与を解除して前記ベルト６５ｃを取外したりすることにより、円滑・容易に回転ドラム２の乗降作業を行うことが可能となり、大変利便である。
【００５８】
更に、回転ドラム２と攪拌羽根６３を一方端に取付けた回転軸６２とは、回転継手６１の固定筒６１ｂの内・外周側において、それぞれ個別に回転可能となして構成されているので、前記回転ドラム２が回転することによってその周方向に掻上げられる粉体原料と、前記回転ドラム２内において、該回転ドラム２とは逆方向に回転する解砕羽根６３とを良好に衝接させることにより、前記粉体原料中に生じる塊を円滑・良好に解砕処理することができる。
【００５９】
また、回転継手６１を構成する固定筒６１ｂ及びシール筒６１ｇには、複数のエア流路Ａ１〜Ａ５が形成されており、エア供給源Ｐからエア供給管ｃ，ｄを介して供給され、前記複数のエア流路Ａ１〜Ａ５内を流通するエアを、シール筒６１ｇ内に収容したシール部材Ｓ３と回転軸６２との間に形成される微小な隙間から、回転ドラム２内に噴射させるようにしたので、粉体原料の前記シール筒６１ｇ内への侵入を良好に阻止することが可能となり、この結果、前記シール筒６１ｇ内に収容され、高速で回転する回転軸６２と摺接するシール部材Ｓ４が、粉体原料の侵入により早期に摩耗・劣化して損傷するのを良好に防ぐことができる。
【００６０】
なお、混合装置１を経年にわたって使用することにより、回転継手６１の固定筒６１ｂと蓋板６１ａとの間に介在させたシール部材Ｓ１，Ｓ２が摩耗・劣化し、前記固定筒６１ｂと回転筒６１ｃとの間に介在させた軸受６１ｄ内に粉体原料が侵入したような場合、前記軸受６１ｃはその機能が低下する結果、前記固定筒６１ｂが回転筒６１ｃ及び蓋板６１ａを介して回転ドラム２とともに回動しようとして、前記回転ドラム２の回転動作等に悪影響を及ぼすおそれがある。
【００６１】
このような場合、本発明の混合装置１には、荷重検出手段６６が具備されているので、前記回転継手６１の固定筒６１ｂが回転ドラム２とともに回転しようとすると、前記固定筒６１ｂに固定した支持筒６１ｅに垂設した回止板６６ａが回転ドラム２の回転方向に回動して、検出部材６６ｃの検出ピン６６ｅを押圧する（図１２参照）。前記検出ピン６６ｅが押圧されることにより、該検出ピン６６ｅの凹陥部６６ｅ_１に嵌着されているリング６６ｆは、前記凹陥部６６ｅ_１から外れて外方に拡開され（図１２参照）、該リング６６ｆと当接している検出片６６ｇを、ばね部材６６ｊの付勢力に抗してセンサ６６ｈと対向する位置まで押圧する結果、前記検出片６６ｇはセンサ６６ｈによって検出される。これにより、前記センサ６６ｈからは、図示しない制御装置に対して検出信号が出力されるとともに、前記制御装置は、この検出信号を受けて回転用電動機４３を停止させる。
【００６２】
前記のように、本発明においては、回転継手６１に具備した軸受６１ｄの機能が低下して、固定筒６１ｂが回転ドラム２とともに回転しようとしても、荷重検出手段６６からの検出信号により、回転用電動機４３が停止されるので、前記回転ドラム２の回転動作等に悪影響を及ぼすという問題の発生を良好に防ぐことができる。
【００６３】
次に、本発明の第２実施例について説明する。なお、第２実施例において、第１実施例と同一部材は同一符号を使用して説明する。第２実施例と第１実施例との相違点は、解砕手段６において回転軸６２と駆動手段６４とを駆動可能に連結する伝達手段の構成にある。
【００６４】
図１７ないし図１９で示すように、第２実施例の伝達手段７０は、解砕羽根６３を一方端に取付けた回転軸６２の他方端に、該回転軸６２に対して回転不能な状態で止着した第１の摩擦車７１と、設置台３１ｂ上に形成した固定枠７２に軸受７２ａ，７２ａを介して回転可能に枢支され、一方端側を駆動手段６４とベルト７３ａを介して駆動可能に連結した伝達軸７３と、前記伝達軸７３に遊嵌された支持部材７４，７４に回転可能に挿通され、一方端を前記伝達軸７３の他方端とベルト７５ａを介して駆動可能に連結した一対の駆動軸７５と、前記一対の駆動軸７５，７５の他方端に、該駆動軸７５に対して回転不能な状態で止着した第２の摩擦車７６，７６と、前記支持部材７４，７４間に張架されて第２の摩擦車７６，７６を互いに相対する方向に付勢するばね部材７７（図１８，１９参照）と、前記固定枠７２上の支持部材７４，７４と対向する位置に立設した支承部材７８，７８とを具備して構成されている。
【００６５】
そして、前記駆動手段６４によって解砕羽根６３を回転駆動するに際しては、回転ドラム２を混合装置１に乗載する際に、前記回転ドラム２を抱持アーム５３と回転車輪４２との間で抱持することにより、回転軸６２の他方端に止着した第１の摩擦車７１と、駆動軸７５，７５の他方端に止着した第２の摩擦車７６，７６とが図１８，１９で示す如く当接する。このとき、第２の摩擦車７６，７６は、ばね部材７７の張力によって互いに相対する方向に付勢される結果、前記第１の摩擦車７１と第２の摩擦車７６，７６とは、その間に滑りを生じさせることなく、確実に回転を伝達することができるように強固に接触させることができる。
【００６６】
この後、駆動手段６４を駆動すると、その回転はベルト７３ａ→伝達軸７３→ベルト７５ａ，７５ａ→駆動軸７５，７５→第２の摩擦車７６，７６→第１の摩擦車７１→回転軸６２の順に伝達され、前記回転軸６２の一方端に取付けた解砕羽根６３を回転させる。この結果、攪拌・混合時に湿気等の影響により粉体原料中に生じる塊は、前記解砕羽根６３の回転により良好に解砕処理され、前記粉体原料をムラなく均一に攪拌・混合することができる。
【００６７】
前記のように、本発明の第２実施例においては、回転ドラム２を混合装置１に乗載する際に、前記回転ドラム２を抱持アーム５３と回転車輪４２との間で抱持することにより、伝達手段７０の第１の摩擦車７１と第２の摩擦車７６，７６とを簡易に当接させて、駆動手段６４と回転軸６２とを駆動可能に連結することが可能となるので、第１実施例のように、回転軸６２に止着した第１のプーリー６５ａと、駆動手段６４の駆動軸に止着した第２のプーリー６５ｂとの間にベルト６５ｃを巻掛けたり、前記ベルト６５ｃに付勢手段６５ｄによって張力を付与したりする等の作業を省くことが可能となり、この結果、混合装置１に対する回転ドラム２の乗降作業をより一層迅速・容易に行うことができる。
【００６８】
なお、第１の摩擦車７１と第２の摩擦車７６，７６との当接状態が解除されると、前記第２の摩擦車７６，７６を止着した駆動軸７５，７５を挿通した支持部材７４，７４は、伝達軸７３に遊嵌されている状態であるため、図１８，１９に示す状態から時計方向または反時計方向に傾倒しようとするが、前記支持部材７４，７４と対向する位置には支承部材７８，７８が立設されているので、前記支持部材７４，７４は支承部材７８，７８のいずれか一方に支承されて、第２の摩擦車７６，７６のいずれか一方が固定枠７２と当接する位置まで傾倒することはない。従って、再度回転ドラム２が抱持アーム５３と回転車輪４２との間で抱持されると、支持部材７４，７４は図１８，１９で示す状態に直ちに復帰して、第１の摩擦車７１と第２の摩擦車７６，７６とを良好に当接させることができる。
【００６９】
また、駆動手段６４の回転は、一旦伝達軸７３に伝達した後、駆動軸７５，７５に伝達するようにしているが、これに限定することなく例えば、伝達軸７３を介することなく直接駆動軸７５，７５に伝達するようにしてもよい。更に、支持部材７４，７４は、伝達軸７３と駆動軸７５，７５との間の距離（長さ寸法）を可変可能となして形成するようにしてもよい。また、駆動手段６４と伝達軸７３及び伝達軸７３と駆動軸７５とはベルト７３ａ，７５ａ以外の手段（例えば、チェーン等）によって駆動可能に連結するようにしてもよい。
【００７０】
次に、本発明の第３実施例について説明する。なお、第３実施例において、第１実施例と同一部材は同一符号を使用して説明する。第３実施例と第１，第２実施例との相違点は、解砕手段６において回転軸６２と駆動手段６４とを駆動可能に連結する伝達手段の構成にある。図２０で示すように、第３実施例の伝達手段８０は、回転軸６２の他方端と駆動手段６４の駆動軸６４ａとを接離可能な状態で連結するオルダム継手等の軸継手手段によって構成されている。
【００７１】
そして、駆動手段６４を駆動すると、その回転は伝達手段８０を介して回転軸６２に伝達され、前記回転軸６２の一方端に取付けた解砕羽根６３を回転駆動する。この結果、攪拌・混合時に粉体原料中に生じる塊は、前記解砕羽根６３と衝接することにより良好に解砕処理され、前記粉体原料をムラなく均一に攪拌・混合することができる。
【００７２】
なお、第３実施例において、駆動手段６４と回転軸６２との連結状態を解除する場合は、例えば、駆動手段６４を図２０の右方向に移動させて（この場合、駆動手段６４は予め図示しない移動手段を介して設置台３１ｂに設置しておけばよい）、伝達手段８０を分割することにより、容易に連結状態を解除することができる。
【００７３】
前記のように、本発明の第３実施例においては、オルダム継手等の軸継手手段からなる伝達手段８０により、駆動手段６４と回転軸６２とを接離可能な状態で連結するようにしたので、前記伝達手段８０は、その構成を簡素化することができるとともに、駆動手段６４の駆動力をロスなく回転軸６２に伝達することが可能となる。
【００７４】
なお、本発明の第１実施例においては、回転ドラム２が横倒しの状態で、解砕手段６の駆動手段６４と回転軸６２とを伝達手段６５によって連結したり、連結を解除したりするようにしているが、これに代えて、回転ドラム２が起立している状態で、伝達手段６５による駆動手段６４と回転軸６２との連結及び連結解除を行うようにしてもよい。また、これは、第３実施例において、伝達手段８０による駆動手段６４と回転軸６２との連結及び連結解除を行う場合においても同様である。
【００７５】
【発明の効果】
請求項１記載の発明によれば、複数種類の粉体原料を収納した回転ドラムを回転させる回転手段と、前記回転ドラムを所定の角度範囲で揺動・反転させる揺動・反転手段と、前記回転ドラムを回転手段との間で抱持するシリンダ駆動の一対の抱持手段と、攪拌・混合時に粉体原料中に生じる塊を解砕するための解砕手段とを具備して混合装置を構成したので、前記回転ドラムの混合装置に対する乗降作業は、回転ドラムを抱持手段と回転手段との間で抱持した状態で、揺動・反転手段によって起立した状態から横倒しの状態へ、あるいは、横倒しの状態から起立した状態へ反転させることにより、迅速・容易に、かつ、安全に行うことができる。その上、攪拌・混合時に粉体原料中に生じる塊は、解砕手段によって良好に解砕処理することができるので、前記粉体原料をムラなく均一に攪拌・混合することが可能となる。
【００７６】
請求項２記載の発明によれば、回転ドラムの一方端側に配設した回転継手と、前記回転継手に回転自在に挿通した回転軸と、前記回転継手を貫通して回転ドラム内に突出する回転軸の一方端側に取付けられて、粉体原料中に生じる塊を解砕する解砕羽根と、前記回転継手を貫通して回転ドラムの外に突出する回転軸の他方端側に伝達手段を介して連結されて、前記解砕羽根を回転駆動する駆動手段とを具備して解砕手段を構成したので、前記回転ドラムと解砕手段の回転軸とは、回転継手の内・外周側において、それぞれ個別に回転させることが可能となり、この結果、回転ドラムの回転に伴ってその周方向に掻上げられる粉体原料を、回転ドラム内において該回転ドラムとは反対方向に回転する解砕羽根と良好に衝接させることにより、前記粉体原料中に生じている塊を迅速・容易に解砕処理することができる。
【００７７】
請求項３記載の発明によれば、解砕手段の回転軸と駆動手段とを、伝達手段を介して分離可能な状態で連結するようにしたので、回転ドラムの混合装置に対する乗降作業に際して、前記回転ドラムに配設した回転継手に挿通されている回転軸と、混合装置に設置されている駆動手段とは、伝達手段による連結状態を解除することにより容易に分離させることが可能となり、この結果、前記回転ドラムの乗降作業に何等支障をきたすことなく、円滑に乗降作業を行うことができる。
【００７８】
請求項４記載の発明によれば、解砕手段の伝達手段は、回転軸及び駆動手段にそれぞれ止着したプーリー間に取外し可能に巻掛けられたベルトと、前記ベルトに所定の張力を付与するための付勢手段とを具備して構成したので、粉体原料の攪拌・混合に際しては、例えば、回転ドラムを混合装置に乗載した後、前記プーリー間に巻掛けたベルトに付勢手段によって張力を付与することにより、駆動手段の駆動力を回転軸に伝達してその一方端に取付けた解砕羽根を良好に回転駆動することができるとともに、回転ドラムを混合装置から降下させるときには、前記付勢手段による付勢を解除してベルトをプーリー間から取外すことにより、容易に回転軸と駆動手段との連結状態を解除することができるため、利便である。
【００７９】
請求項５記載の発明によれば、解砕手段の伝達手段は、回転軸に止着した第１の摩擦車と、駆動手段にベルト等を介して駆動可能に連結され、前記第１の摩擦車と摺接する一対の第２の摩擦車と、前記一対の第２の摩擦車を互いに相対する方向に付勢するための付勢手段とを具備して構成したので、回転ドラムを混合装置に乗載する際に、前記回転ドラムを抱持手段によって抱持することにより、第１の摩擦車が一対の第２の摩擦車間と自動的に摺接するため、駆動手段の駆動力を回転軸に伝達してその一方端に取付けた解砕羽根を良好に回転駆動することができるとともに、回転ドラムを混合装置から降下させるときには、抱持手段による抱持状態を解除することにより、前記第１の摩擦車と一対の第２の摩擦車との摺接状態が自動的に解除されるため、容易に回転軸と駆動手段との連結状態を解除することができる結果、伝達手段による回転軸と駆動手段との連結及び連結解除は、人手を要することなく行うことが可能となり、大変利便である。その上、前記一対の第２の摩擦車は、付勢手段によって互いに相対する方向に付勢されているので、第１の摩擦車と強固に摺接させることが可能となり、この結果、前記第１の摩擦車との間に滑りを生じさせることなく、駆動手段からの駆動力を確実に回転軸に伝達することができる。
【００８０】
請求項６記載の発明によれば、解砕手段の伝達手段は、回転軸と駆動手段とを接離可能な状態で連結する軸継手手段によって構成したので、前記回転軸と駆動手段とは複数の部材を使用することなく、簡易に接離可能な状態で駆動連結することができるとともに、駆動手段からの駆動力をロスなく回転軸に伝達することが可能となるという利点もある。
【００８１】
請求項７記載の発明によれば、解砕手段の回転継手には、該回転継手側から回転ドラム内に向けてエアを噴射することにより、回転継手内への粉体原料の侵入を防ぐようにした侵入防止手段を具備したので、前記エアの噴射によって粉体原料の回転継手内への侵入を良好に防ぐことが可能となり、この結果、前記回転継手内に具備したシール部材が粉体原料の侵入により早期に劣化・損傷するのを防ぐことができるとともに、前記シール部材の劣化・損傷によって回転継手内に粉体原料が侵入することにより、前記回転継手内に具備した軸受の機能が低下するのを良好に防ぐことができる。
【００８２】
請求項８記載の発明によれば、解砕手段の回転継手に具備した侵入防止手段には、抱持手段を駆動するシリンダに供給されるエアの一部を分岐・供給するように構成したので、エアの供給源を複数用意する必要がなくなる結果、混合装置が大形化するのを良好に防ぐことが可能となる。
【００８３】
請求項９記載の発明によれば、解砕手段には、回転継手の機能が低下した場合に発生する荷重を検出するための荷重検出手段を具備したので、回転継手の機能が低下した場合には、前記荷重検出手段からの検出信号を受けて、直ちに回転手段を停止することにより、回転ドラムの回転動作等に悪影響を及ぼすのを良好に阻止することが可能となる。
【図面の簡単な説明】
【図１】本発明の混合装置を示す正面図である。
【図２】本発明の混合装置を示す側面図である。
【図３】本発明の混合装置における抱持手段を示す側面図である。
【図４】本発明の混合装置における空圧系統図である。
【図５】本発明の混合装置における解砕手段を示す側面図である。
【図６】解砕手段の要部を拡大して示す縦断側面図である。
【図７】回転継手の要部を拡大して示す縦断側面図である。
【図８】回転継手の要部を拡大して示す縦断正面図である。
【図９】解砕手段を示す正面図である。
【図１０】伝達手段を示す正面図である。
【図１１】荷重検出手段を示す縦断正面図である。
【図１２】荷重検出手段の動作状況を示す縦断正面図である。
【図１３】回転ドラムを混合装置の近傍まで搬送した状態を示す側面図である。
【図１４】回転ドラムを抱持した状態を示す側面図である。
【図１５】回転ドラムを投入・排出口を下向きとして反転させた状態を示す側面図である。
【図１６】回転ドラムを搬送台車にて搬送する状態を示す側面図である。
【図１７】本発明の第２実施例の伝達手段を示す側面図である。
【図１８】第２実施例の伝達手段を示す正面図である。
【図１９】第２実施例の伝達手段の要部を拡大して示す正面図である。
【図２０】本発明の第３実施例を示す側面図である。
【符号の説明】
１　混合装置
２　回転ドラム
３　揺動・反転手段
４　回転手段
５　抱持手段
６　解砕手段
３１　揺動台
３５　揺動・反転用電動機
４２　回転車輪
４３　回転用電動機
５３　抱持アーム
５３ａ　回転輪
５４ａ，５４ｂ　シリンダ
６１　回転継手
６２　回転軸
６３　解砕羽根
６４　駆動手段
６５，７０，８０　伝達手段
６６　荷重検出手段
Ａ１〜Ａ５　エア流路[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a mixing device that stirs and mixes a plurality of types of powder materials stored in a rotary drum by rotating and swinging the rotary drum.
[0002]
[Prior art]
In recent years, as a mixing device for stirring and mixing a plurality of types of powder raw materials, for example, a rectangular swing table swingably supported by a pair of columns erected on a base, and a seesaw A swing mechanism for swinging, a rotating wheel mounted on the swing table and rotatably mounted on a rotating drum, and a driving means (electric motor) for rotating the rotating wheel. Various mixing devices have been developed.
[0003]
In the mixing device having the above configuration, when stirring and mixing a plurality of types of powder raw materials, in a rotating drum mounted on a rotating wheel, in a state in which a plurality of types of powder raw materials to be stirred and mixed are stored, By driving the driving means, the rotary drum is rotated, and by driving the rocking mechanism, the rotary drum is rocked like a seesaw, so that the plurality of types of powder raw materials are moved in the circumferential direction of the rotary drum. Stirring and mixing are performed by a scraping operation and a reciprocating movement in the length direction.
[0004]
[Problems to be solved by the invention]
However, when stirring and mixing a plurality of types of powder raw materials stored in the rotating drum as described above, for example, when the powder raw materials are in a moist state at the stage before stirring and mixing, By performing agitation and mixing in a state of being housed in the rotating drum, a lump is formed every time the rotating drum moves in the circumferential direction or the length direction. There was a problem that it was difficult to stir and mix uniformly.
[0005]
For this reason, when a lump is generated in the powder raw material as described above, after the mixing operation is completed, the lump is removed from the powder raw material, or while the lump is crushed on a wire mesh, for example. Since the mixture was mixed with the powdered raw material that had been sieved and mixed, the work of mixing the powdery raw material was very troublesome and time-consuming.
[0006]
In addition, in the mixing apparatus having the above-described configuration, in order to continuously perform agitation and mixing operations using a plurality of rotating drums, when the rotating drums are moved on and off the mixing apparatus, the operations are performed by lifting a crane or the like. Since the lower means has been used, it takes time and effort to get on and off the rotary drum, and the powder drum is stored in the rotary drum. This had to be done with due consideration, resulting in very poor work efficiency.
[0007]
In view of the above-mentioned problems, the present invention can uniformly stir and mix a plurality of types of powder raw materials without unevenness, and can smoothly and easily perform getting on and off work with respect to a mixing device of a rotating drum. It is an object to provide a simple mixing device.
[0008]
In order to solve the above-mentioned problems, the present invention provides a rotating means for rotating a rotating drum containing a plurality of types of powder materials, and a swinging / reversing means for swinging / reversing the rotating drum within a predetermined angle range. And a pair of cylinder-driven holding means for holding the rotary drum between rotating means, and crushing means for crushing a lump generated in the powder raw material during stirring and mixing. It is characterized by comprising.
[0009]
According to a second aspect of the present invention, in the mixing device according to the first aspect, the crushing means includes a rotary joint disposed on one end side of a rotary drum, and a rotary shaft rotatably inserted through the rotary joint. A crushing blade attached to one end of a rotary shaft that penetrates the rotary joint and protrudes into the rotary drum, and crushes a lump generated in the powder raw material; and a rotary drum that penetrates the rotary joint. And a driving means connected to the other end of the rotating shaft projecting outside through a transmission means to rotationally drive the crushing blade.
[0010]
According to a third aspect of the present invention, in the mixing apparatus according to the second aspect, the transmission means is configured to connect the rotating shaft and the driving means in a separable state.
[0011]
According to a fourth aspect of the present invention, in the mixing device according to the second or third aspect, the transmission means is detachably wound between pulleys fixed to the other end of the rotation shaft and the drive shaft of the drive means, respectively. It is characterized by comprising a belt and biasing means for applying a predetermined tension to the belt.
[0012]
According to a fifth aspect of the present invention, in the mixing device according to the second or third aspect, the transmission means is provided via a first friction wheel fixed to the other end of the rotary shaft, a drive shaft of a drive means, a belt, and the like. And a pair of second friction wheels slidingly contacting the first friction wheel, and biasing means for biasing the pair of second friction wheels in directions opposite to each other. It is characterized by having comprised.
[0013]
According to a sixth aspect of the present invention, in the mixing apparatus according to the second or third aspect, the transmission means comprises a shaft coupling means for connecting the other end of the rotary shaft and the drive shaft of the drive means in a manner capable of coming and going. It is characterized by the following.
[0014]
According to a seventh aspect of the present invention, in the mixing device according to the second aspect, the powdery raw material is injected into the rotary joint by injecting air from the rotary joint side into the rotary drum. It is characterized by comprising intrusion prevention means for preventing intrusion.
[0015]
According to an eighth aspect of the present invention, in the mixing apparatus according to the seventh aspect, the intrusion prevention means is configured to branch and supply a part of air supplied to a cylinder driving the holding means. Features.
[0016]
According to a ninth aspect of the present invention, in the mixing apparatus according to the second aspect, the crushing means includes a load detecting means for detecting a load generated when the function of the rotary joint is reduced. It is characterized by the following.
[0017]
In the present invention, a rotating means for rotating a rotating drum containing a plurality of types of powder raw materials, a swinging / reversing means for swinging / reversing the rotating drum within a predetermined angle range, and a rotating means for rotating the rotating drum A pair of holding means of a cylinder drive to hold between, and a crushing means for crushing a lump generated in the powder raw material at the time of stirring and mixing, so as to constitute a mixing apparatus, The getting on and off operation of the rotary drum with respect to the mixing device can be performed quickly, easily, and safely. In addition, since the lump generated in the powder raw material can be satisfactorily crushed by the crushing means, the powder raw material can be uniformly stirred and mixed.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view showing a mixing apparatus 1 of the present invention, and FIG. 2 is a side view showing the mixing apparatus 1 of the present invention. The mixing apparatus 1 has a hollow cylindrical shape for accommodating a plurality of types of powder raw materials. A rotating drum 2; a swinging / reversing means 3 for swinging / reversing the rotating drum 2 within a predetermined angle range; a rotating means 4 for rotating the rotating drum 2; And a crushing means 6 for crushing a lump generated in the powder raw material at the time of stirring and mixing.
[0019]
As shown in FIGS. 1 and 2, the rotary drum 2 is formed at one end (on the right side in FIG. 2) with an inlet / outlet 2a for the powder material, and at the other end (see FIG. 2). (The left side of the figure) is provided with the crushing means 6. Reference numerals 2c and 2c denote a pair of locking projections provided around the central portion of the rotary drum 2 at a predetermined interval.
[0020]
Next, the configuration of the swing / reversal means 3 will be described. In FIGS. 1 and 2, reference numeral 31 denotes a swing table which is framed in a rectangular shape using a steel material such as an angle iron or the like, and supports bases 33 a and 32 b projecting outward from the center of the left and right ends thereof. The swing table 31 is attached to the columns 34, 34 so as to be swingable and reversible by being inserted through bearings 34a, 34a on the columns 34, 34 standing upright.
[0021]
A swinging / reversing motor 35 is mounted on a base 33 and is drivably connected to an input end of a speed reducer 37 via a belt 36a. An output end of the speed reducer 37 is connected to a chain 36b. The drive shaft 35 is drivably connected to a sprocket 38 fixed to one support shaft 32a (the left side in FIG. 1) protruding from the swing table 31 through the rotation table 31. By transmitting the rotation to the support shaft 32a in a decelerated state, the swing table 31 is swung and inverted over a predetermined angle range around the support shafts 32a and 32b.
[0022]
Numeral 39 denotes an angle detecting means comprising a rotary encoder or the like connected to the other support shaft 32b (right side in FIG. 1) protruding from the rocking table 31 and corresponding to the rocking / reversing angle of the rocking table 31. The pulse signal is output to a control device (not shown). As a result, the rotation direction of the swinging / reversing motor 35 is switch-controlled by the switching signal output from the control device based on the pulse signal.
[0023]
Next, the configuration of the rotating means 4 will be described. In FIGS. 1 and 2, reference numeral 41 denotes a bearing 31a, 31a mounted in the front-rear direction (left-right direction in FIG. 2) of the swing table 31 so as to be rotatable in a state orthogonal to the support shafts 32a, 32b of the swing table 31. Rotating wheels (friction wheels) 42, 42, which are rotatably mounted with the rotating drum 2 lying sideways, are attached to both ends of the rotating shafts 41, 41.
[0024]
Reference numeral 43 denotes a rotating electric motor mounted on the lower side surface of the swing table 31, which is driven by sprockets 44, 44 fixed to a substantially central portion of the rotating shaft 41 in the longitudinal direction (left-right direction in FIG. 2) via a chain 45. The rotating drum 2 mounted on the rotating wheels 42 is rotated at a predetermined speed by transmitting the rotation of the rotating electric motor 43 to the rotating shaft 41 and rotating the rotating wheels 42. Rotate.
[0025]
Next, the configuration of the holding means 5 will be described. 1 to 3, reference numeral 51 denotes a pair of arm fixing bases erected at both ends of the swing base 31 in the left-right direction (left-right direction in FIG. 1). At the center of the arm fixing base 51 in the longitudinal direction (the left-right direction in FIG. 2), an arm support 52 is provided upright. The distal end of the arm support 52 has a distal end as shown in FIG. A holding arm 53 to which a rotating wheel 53a is rotatably mounted is rotatably mounted via a pivot 52a.
[0026]
Reference numerals 54a and 54b denote cylinders having a base fixed to the base end of the arm post 52 and a distal end of the piston rod fixed to the base end of the holding arm 53. The cylinders 54a and 54b are as shown in FIG. The air supply pipes a1, a2, b1, b2, and c are connected to an air supply source P in a state where an air pressure adjustment unit U, a switching valve V1, and the like are arranged in the middle. Then, by switching the switching valve V1 to move the cylinders 54a and 54b forward and backward, the holding arm 53 is rotated about the pivot 52a, and the rotary drum 2 is rotated by the rotary wheel 42 and the rotary wheel 53a. (A state shown by a two-dot chain line in FIG. 3), or the holding state of the rotary drum 2 is released (a state shown by a solid line in FIG. 3).
[0027]
In FIG. 3, reference numeral 55 denotes a locking roller rotatably mounted on a surface of the arm column 52 facing the rotary drum 2, and a predetermined interval is provided on the outer periphery of the central portion of the rotary drum 2. The rotating drum 2 is prevented from slipping off the rotating wheels 42 by engaging and slidingly contacting the pair of locking projections 2c, 2c provided in the circumferential state (see FIG. 2).
[0028]
Next, the configuration of the crushing means 6 will be described. 5 and 6, reference numeral 61 denotes a rotary joint disposed on the other end side (the right side in FIG. 5) of the rotary drum 2. The rotary joint 61 is a fixed cylinder formed in a hollow cylindrical shape as shown in FIG. 61b, a cover plate 61a rotatably fitted to the outer peripheral surface on one end side (left side in FIG. 6) of the fixed cylinder 61b via seal members S1 and S2, and the other end side of the fixed cylinder 61b (FIG. 6 and a hollow rotary cylinder 61c rotatably fitted to the outer peripheral surface of the cover plate 61a via a bearing 61d and fastened and fixed to the cover plate 61a. ), The support cylinder 61e fitted and fixed to one end side (the right side in FIG. 6) of the fixed cylinder 61b with the bearings 61f fitted on both ends, and the fixed cylinder 61b with the seal members S3, S4 housed therein. And a sealing cylinder 61g inserted and screwed to the other end side (left side in FIG. 6) of the And which, by fastening and fixing the other end side of the opening 2d of the rotary drum 2 to the cover plate 61a, the rotary joint 61 is disposed at the other end of the rotary drum 2.
[0029]
Subsequently, in FIGS. 5 and 6, reference numeral 62 denotes a freely rotatable inner circumferential surface of the fixed cylinder 61b of the rotary joint 61 via a bearing 61f fitted to the support cylinder 61e and seal members S3 and S4 housed in the seal cylinder 61g. The rotating shaft 62 and the rotating drum 2 can be rotated individually and at different rotational speeds on the inner and outer peripheral sides of the fixed cylinder 61b of the rotating joint 61, respectively. ing.
[0030]
The rotation speed of the rotating shaft 62 is higher than that of the rotating drum 2. Therefore, if the powder material enters the sealing cylinder 61 g through which the rotating shaft 62 is inserted, wear and deterioration of the sealing member S <b> 4 is reduced. Easy to progress early. For this reason, the sealing cylinder 61g and the fixed cylinder 61b into which the sealing cylinder 61g is inserted and screwed are provided with a means (intrusion preventing means) for preventing powder material from entering the sealing cylinder 61g. ing.
[0031]
As shown in FIGS. 7 and 8, the means includes a first air bored in the outer peripheral side of the fixed cylinder 61b along the length direction (the left-right direction in FIG. 7) so as not to penetrate the fixed cylinder 61b. A flow path A1, a second air flow path A2 formed in the fixed cylinder 61b in a direction (circumferential direction) perpendicular to the first air flow path A1, and a second air flow path A2 formed between the fixed cylinder 61b and the seal cylinder 61g. A third air flow path A3 provided in the periphery, a fourth air flow path A4 formed along the length direction on the inner peripheral side of the seal cylinder 61g, and a third air flow path formed in the seal cylinder 61g. The fifth air flow path A5 is formed so as to communicate with the path A3 and the fourth air flow path A4 (toward the circumferential direction).
[0032]
As shown in FIG. 4, the first air flow path A1 supplies air to the cylinders 54a and 54b of the holding means 5 in a state where the pressure reducing valve V2 and the like are arranged in the middle of the air supply pipe d. The air that is branched and connected to an air supply pipe c for reducing the pressure to a predetermined pressure by the pressure reducing valve V2 is supplied to the first air flow path A1 → the second air flow path A2 → the third air flow. The flow path A3 → fifth air flow path A5 → fourth air flow path A4 passes through the small gap formed between the rotating shaft 62 and the sealing member S3 housed in the sealing cylinder 61g, and the rotating drum 2 As a result, the powder material can be satisfactorily prevented from entering the seal cylinder 61g.
[0033]
Next, in FIGS. 5, 6, and 9, reference numeral 63 denotes a crushing blade formed by combining a substantially V-shaped blade member and a flat blade member in a cross shape (see FIG. 9). 2 is attached to one end side of the rotating shaft 62 protruding into the inside. Reference numeral 64 denotes a driving means (electric motor) installed on an installation table 31b extending from the rear end (the right side in FIG. 5) of the swing table 31. They are connected in a separable manner via transmission means 65.
[0034]
As shown in FIGS. 5 and 10, the transmission means 65 includes a first pulley 65a fixed to the other end (the right side in FIG. 5) of the rotary shaft 62 so as to be non-rotatable with respect to the rotary shaft 62. And a second pulley 65b fixed to the drive shaft 64a of the drive means 64 in a non-rotatable manner with respect to the drive shaft 64a, and detachably wrapped between the first and second pulleys 65a, 65b. And a biasing means 65d attached to the fixed wall 65e erected on the installation table 31b so as to be tiltable to apply a predetermined tension to the belt 65c. ing.
[0035]
When the belt 65c is wound around the first and second pulleys 65a and 65b, and the driving means 64 is driven in a state where a predetermined tension is applied to the belt 65c by the urging means 65d, the rotation of the belt 65c becomes the first rotation. The second pulley 65b → the belt 65c → the first pulley 65a → the power is transmitted to the crushing blade 63 via the rotating shaft 62, and the crushing blade 63 is rotated at a predetermined speed, so that the powder raw material is stirred and mixed. Can be broken up.
[0036]
In FIG. 5, reference numeral 66 denotes an interposition between the fixed cylinder 61b and the rotary cylinder 61c due to deterioration and damage of the sealing members S1 and S2 interposed between the fixed cylinder 61b of the rotary joint 61 and the cover plate 61a. Load detecting means for detecting a load when the fixed cylinder 61b tries to rotate together with the rotary drum 2 when the function of the bearing 61d is reduced due to the intrusion of the powder raw material into the caused bearing 61d. It is. As shown in FIGS. 5, 6, and 11, the load detecting means 66 includes a detent plate 66a (see FIG. 6) vertically provided on a lower surface of an end of a support cylinder 61e protruding from the fixed cylinder 61b, and a support plate 31b. Fixed base 66b ₁ And a detection member 66c attached to the fixed plate 66b, which is installed through the intermediary, in a state facing the detent plate 66a.
[0037]
As shown in FIG. 11, the detecting member 66c has a housing box 66d having one end side (the right side in FIG. 11) fixed to a fixing plate 66b, and an axial direction (left and right in FIG. 11). Direction), and a concave portion 66e recessed in the middle of the detection pin 66e. ₁ , A detection piece 66g housed in the housing box 66d so as to be movable in the axial direction (left-right direction in FIG. 11), and a detection pin on the outer peripheral surface of the housing box 66d. A sensor 66h which is attached in a state orthogonal to 66e and detects the detection piece 66g, and supports the detection pin 66e by being screwed into an opening opened at the other end (the left side in FIG. 11) of the housing box 66d. And a spring member 66j interposed between the detection piece 66g and the support member 66i to press and urge the detection piece 66g toward the fixing plate 66b (the right side in FIG. 11). It is configured.
[0038]
When the fixed cylinder 61b of the rotary joint 61 tries to rotate with the rotation of the rotary drum 2, the rotation stop plate 66a suspended from the support cylinder 61e rotates in the same direction as the rotation direction of the rotary drum 2. Then, as shown in FIG. 12, the detection pin 66e of the detection member 66c is pressed. When the detection pin 66e is pressed, the concave portion 66e of the detection pin 66e is pressed. ₁ The ring 66f fitted in the recess 66e is ₁ As a result of pressing the detection piece 66g abutting on the ring 66f to a position facing the sensor 66h against the biasing force of the spring member 66j, the detection piece 66g is expanded outwardly (see FIG. 12). The detection piece 66g is detected by the sensor 66h. As a result, a detection signal is output from the sensor 66h to a control device (not shown), and the control device receives the detection signal and stops the rotating electric motor 43.
[0039]
Next, a case where a plurality of types of powder raw materials are stirred and mixed in the mixing apparatus 1 of the present invention will be described. First, as shown in FIG. 13, the rotary drum 2 loaded with a plurality of types of powder raw materials in a state where the loading / unloading port 2a side faces upward is loaded on the transporting cart 10 as shown in FIG. It is transported to a position close to the rotating wheel 42, and the locking roller 55 of the holding means 5 is engaged and slidably contacted between a pair of locking projections 2c, 2c provided around the outer periphery of the body center portion (FIG. 14). reference). Thereby, the first and second pulleys 65a and 65b constituting the transmission means 65 of the crushing means 6 can always keep the parallelism constant.
[0040]
Subsequently, by driving the cylinders 54a and 54b (only the cylinder 54a is shown in FIG. 14) of the holding means 5, the holding arm 53 is moved from the position shown by the solid line in FIG. As shown by a two-dot chain line, the rotary drum 2 is gradually rotated toward the rotary drum 2 to hold the rotary drum 2 between the rotary wheel 42 and the rotary wheel 53a (see FIGS. 1 and 14). Then, after holding the rotating drum 2 as described above, the carrier 10 is removed as shown in FIG.
[0041]
Thereafter, the swing / reverse motor 35 is driven (for example, rotated forward), and its rotation is transmitted to the swing table 31 in a state where the rotation is reduced by the reduction gear 37, and the rotation is performed via the rotating wheels 42. The rotary drum 2 mounted on the rocking table 31 is gradually inverted from a state of standing up as shown in FIG. 14 to a state of lying down as shown in FIG. When the rotating drum 2 is in a sideways position (see FIG. 2), a predetermined pulse signal is output from the angle detecting means 39 (see FIG. 1) connected to the support shaft 32b of the swing table 31 to a control device (not shown). Therefore, the control device receives this signal and outputs a stop command signal to the swing / reverse motor 35 to stop the swing / reverse motor 35.
[0042]
As described above, when the rotating drum 2 is inverted from the upright state to the sideways state, the driving means 64 of the crushing means 6 and the other end of the rotating shaft 62 having the crushing blade 63 attached to one end are continued. And drivably connected via a transmission member 65. That is, as shown in FIGS. 5 and 10, a belt is provided between a first pulley 65a fixed to the other end of the rotating shaft 62 and a second pulley 65b fixed to the driving shaft 64a of the driving means 64. The belt 65c is wound around, and the urging means 65d attached to the fixed wall 65e is tilted clockwise as shown by the solid line in FIG. 10 from the state shown by the two-dot chain line in FIG. Is given.
[0043]
As a result, the driving force of the driving means 64 is satisfactorily transmitted to the rotating shaft 62 via the belt 65c, and the crushing blade 63 attached to the rotating shaft 62 can be rotated. At the same time, the air supply pipe d is connected to the first air flow path A1 provided in the fixed cylinder 61b of the rotary joint 61 (see FIGS. 6 and 7).
[0044]
Next, the rotating motor 43 is driven to transmit the rotation to the rotating shaft 41 via the chain 45, and the rotating drum 2 mounted on the rotating wheel 42 fixed to the rotating shaft 41 is, for example, , In the counterclockwise direction in FIG. At the same time, the driving means 64 of the crushing means 6 is driven to transmit the rotation to the rotating shaft 62 via the belt 65c, and the crushing blade 63 attached to one end of the rotating shaft 62 is rotated. The drum 2 is rotated in the opposite direction (ie, clockwise in FIGS. 1 and 9).
[0045]
At this time, the rotating shaft 62 of the crushing means 6 is rotatably inserted into the inner peripheral surface of the fixed cylinder 61b of the rotary joint 61, and the rotary drum 2 is mounted on the outer peripheral surface of the fixed cylinder 61b of the rotary joint 61. Because the lid 61a is rotatably fitted and fastened and fixed, the rotary drum 2 and the rotary shaft 62 are individually rotated on the inner and outer peripheral sides of the fixed cylinder 61b of the rotary joint 61. Can be done.
[0046]
Further, at the same time as rotating the rotary drum 2 and the crushing blade 63, the swinging / reversing motor 35 is driven (for example, rotated forward), and the rotation thereof is reduced by the reduction gear 37. The rotation is transmitted to the rocking table 31, and the rotary drum 2 is gradually inclined from the sideways down state so that the loading / unloading port 2a side faces downward. When the rotary drum 2 is inclined, for example, by 20 ° in the clockwise direction in FIG. 2, a predetermined pulse signal is output from the angle detecting means 39 to a control device (not shown). In response to this, a command signal for switching the rotation direction of the swinging / reversing motor 35 is output, and the swinging / reversing motor 35 is rotated in the opposite direction (that is, reversed).
[0047]
When the rotation direction of the swinging / reversing motor 35 is switched, the rotating drum 2 is turned from the state in which the loading / unloading port 2a side is inclined downward to the loading / unloading port 2a side. Incline gradually. When the rotary drum 2 is inclined, for example, by 20 ° in the counterclockwise direction in FIG. 2, a predetermined pulse signal is output from the angle detecting means 39 to a control device (not shown). Receives this signal and outputs a command signal for switching the rotation direction of the swinging / reversing motor 35, and switches the rotation direction of the swinging / reversing motor 35 again (ie, forwardly rotates). Thereafter, the above operation is repeatedly performed until the preset mixing time elapses, whereby the rotating drum 2 is swung like a seesaw in a predetermined angle range.
[0048]
As described above, the rotating drum 2 is rotated via the rotating wheels 42, and the rocking table 31 on which the rotating drum 2 is mounted via the rotating wheels 42 is used to rotate the rocking / reversing electric motor 35 forward / reverse. As a result, the powder raw material stored in the rotating drum 2 is scraped up in the rotating direction (circumferential direction) of the rotating drum 2 and moves in the rotating drum 2 in its axial direction (length direction). As a result, the stirring and mixing can be performed well.
[0049]
Further, since the crushing means 6 is provided on the other end side of the rotary drum 2, even if the powder raw material stored in the rotary drum 2 is moist, By contacting with the crushing blades 63 of the crushing means 6, the lump generated at the time of stirring and mixing is satisfactorily crushed, so that the powder raw material can be uniformly stirred and mixed without unevenness.
[0050]
In addition, air is constantly injected from the seal cylinder 61g of the rotary joint 61 constituting the crushing means 6 through a minute gap formed between the seal member S3 housed therein and the rotary shaft 62. Therefore, it is possible to satisfactorily prevent the powder raw material from entering the seal cylinder 61g, and as a result, the seal member S4 housed in the seal cylinder 61g and slidably in contact with the rotating shaft 62 becomes It is possible to satisfactorily prevent early wear, deterioration and damage due to intrusion of the raw material.
[0051]
Further, the rotating drum 2 is held between the rotating wheel 42 and the rotating wheel 53a provided on the holding arm 53 of the holding means 5, and the locking projection 2c provided around the center of the body center portion. , 2c is rotated with the engaging roller 55 engaged and slidably contacted, so that even if it is rocked as described above, it can be safely stirred and mixed without falling off the rocking table 31. Can be.
[0052]
Next, when the preset mixing time has elapsed, the rotating electric motor 43 and the driving means 64 of the crushing means 6 are stopped, and based on the pulse signal output from the angle detecting means 39, the rotating drum 3 is turned over. At this point, the swing / reverse motor 35 is stopped.
[0053]
Subsequently, when the rotation of the rotary drum 2 is stopped when the rotary drum 2 is turned over, the connection between the drive unit 64 of the crushing unit 6 and the rotary shaft 62 is released. That is, the urging means 65d that applies tension to the belt 65c is rotated counterclockwise from the state indicated by the solid line in FIG. 10 as indicated by the two-dot chain line in FIG. The application is released, and in this state, the belt 65c is removed from the first and second pulleys 65a and 65b. At the same time, the air supply pipe d is removed from the first air flow path A1 provided in the fixed cylinder 61b of the rotary joint 61.
[0054]
As described above, when the connection between the driving means 64 of the crushing means 6 and the rotating shaft 62 is released, the swinging / reversing motor 35 is driven (for example, by normal rotation), and the rotation thereof is reduced by the reduction gear. The rotating drum 2 which is transmitted to the rocking table 31 through the rotating wheels 42 while being decelerated by 37 and is loaded on the rocking table 31 through the rotating wheels 42 as shown in FIG. -Invert gradually so that the discharge port 2a side faces downward. Then, as shown in FIG. 15, when the rotary drum 2 stands up with the charging / discharging port 2a facing downward, a predetermined pulse signal is sent from the angle detecting means 39 (see FIG. 1) to the control device (not shown). Is output, the controller outputs a stop command signal to the swing / reverse motor 35 to stop the swing / reverse motor 35.
[0055]
The rotating drum 2 erected so that the loading / unloading port 2a faces downward is mounted on the carrier 10 as shown in FIG. Thereafter, the cylinders 54a and 54b of the holding means 5 are driven, and the holding arm 53 is gradually rotated about the pivot 52a from the state shown by the two-dot chain line in FIG. 3 to the state shown by the solid line in FIG. 2 to move away from the rotating drum 2 to release the holding of the rotating drum 2. As described above, the rotating drum 2 released from the holding state by the holding means 5 is conveyed to the discharge step in a state of being mounted on the conveyance carriage 10 (see FIG. 16). Thereafter, when stirring and mixing the powder raw materials, the above operation may be repeated.
[0056]
As described above, since the mixing device 1 of the present invention is provided with the crushing means 6, the agglomerates generated by the influence of moisture and the like in the powder raw material to be stirred and mixed in the rotary drum 2 are removed. By colliding with the crushing blades 63 of the crushing means 6 which is driven to rotate in the inside 2, the crushing can be satisfactorily performed. As a result, the powder material can be uniformly stirred and mixed. .
[0057]
Further, the crushing means 6 is configured to be able to separate the rotating shaft 62 having the crushing blade 63 attached to one end thereof and the driving means 64 by releasing the connection state by the transmission means 65. Even in the case where the rotary drum 2 is moved on and off the mixing device 1, a predetermined tension is applied to the belt 65c constituting the transmission means 65 by the urging means 65d to drive the driving force of the driving means 64 to the rotating shaft 62. By removing the belt 65c by releasing the tension applied to the belt 65c by the urging means 65d, the work of getting on and off the rotary drum 2 can be performed smoothly and easily, which is very convenient. It is.
[0058]
Furthermore, since the rotating drum 2 and the rotating shaft 62 having the stirring blade 63 attached to one end are individually rotatable on the inner and outer peripheral sides of the fixed cylinder 61b of the rotary joint 61, the rotating shaft 62 is configured to be individually rotatable. Good contact between the powdery raw material that is scraped in the circumferential direction by the rotation of the rotary drum 2 and the crushing blade 63 that rotates in the opposite direction to the rotary drum 2 in the rotary drum 2 Thereby, the lump generated in the powder raw material can be smoothly and satisfactorily crushed.
[0059]
Further, a plurality of air flow paths A1 to A5 are formed in the fixed cylinder 61b and the seal cylinder 61g constituting the rotary joint 61, and are supplied from an air supply source P via air supply pipes c and d. The air flowing through the plurality of air flow paths A1 to A5 is injected into the rotary drum 2 from a minute gap formed between the seal member S3 housed in the seal cylinder 61g and the rotary shaft 62. As a result, it is possible to satisfactorily prevent the powder raw material from entering the seal cylinder 61g. As a result, the seal member S4 accommodated in the seal cylinder 61g and slidably in contact with the rotating shaft 62 rotating at high speed. However, it is possible to satisfactorily prevent early wear, deterioration and damage due to intrusion of the powder raw material.
[0060]
By using the mixing apparatus 1 over the years, the seal members S1 and S2 interposed between the fixed cylinder 61b of the rotary joint 61 and the cover plate 61a wear and deteriorate, and the fixed cylinder 61b and the rotary cylinder 61c are worn. When the powder raw material intrudes into the bearing 61d interposed between the rotary drum 2 and the rotary drum 2 via the rotary cylinder 61c and the cover plate 61a, the function of the bearing 61c is reduced. At the same time, the rotation of the rotary drum 2 may be adversely affected.
[0061]
In such a case, since the mixing device 1 of the present invention is provided with the load detecting means 66, when the fixed cylinder 61b of the rotary joint 61 tries to rotate together with the rotary drum 2, it is fixed to the fixed cylinder 61b. The rotation stop plate 66a suspended from the support cylinder 61e rotates in the rotation direction of the rotary drum 2, and presses the detection pin 66e of the detection member 66c (see FIG. 12). When the detection pin 66e is pressed, the concave portion 66e of the detection pin 66e is pressed. ₁ The ring 66f fitted in the recess 66e is ₁ As a result of pressing the detection piece 66g abutting on the ring 66f to a position facing the sensor 66h against the biasing force of the spring member 66j, the detection piece 66g is expanded outwardly (see FIG. 12). The detection piece 66g is detected by the sensor 66h. As a result, a detection signal is output from the sensor 66h to a control device (not shown), and the control device receives the detection signal and stops the rotating electric motor 43.
[0062]
As described above, in the present invention, even if the function of the bearing 61d provided in the rotary joint 61 is reduced and the fixed cylinder 61b tries to rotate with the rotary drum 2, the rotation signal is detected by the detection signal from the load detecting means 66. Since the electric motor 43 is stopped, it is possible to favorably prevent the problem that the rotation operation of the rotary drum 2 is adversely affected.
[0063]
Next, a second embodiment of the present invention will be described. In the second embodiment, the same members as those in the first embodiment will be described using the same reference numerals. The difference between the second embodiment and the first embodiment lies in the configuration of the transmission means for drivingly connecting the rotating shaft 62 and the driving means 64 in the crushing means 6.
[0064]
As shown in FIGS. 17 to 19, the transmission means 70 of the second embodiment is mounted on the other end of the rotating shaft 62 having the crushing blade 63 attached to one end in a state where the rotating shaft 62 cannot rotate. The fixed first friction wheel 71 and a fixed frame 72 formed on the mounting table 31b are rotatably supported via bearings 72a, 72a, and one end is driven via a driving means 64 and a belt 73a. The transmission shaft 73 is rotatably inserted into the transmission shaft 73 and the support members 74, 74 loosely fitted to the transmission shaft 73, and one end is drivably connected to the other end of the transmission shaft 73 via a belt 75a. A pair of drive shafts 75, second friction wheels 76, 76 fixed to the other ends of the pair of drive shafts 75, 75 so as not to rotate with respect to the drive shaft 75, and the support member 74. , 74 and the second friction wheels 76, 76 are connected to each other. 18 and 19, and support members 78, 78 erected at positions facing the support members 74, 74 on the fixed frame 72. I have.
[0065]
When the driving means 64 drives the crushing blades 63 to rotate, the rotating drum 2 is held between the holding arm 53 and the rotating wheels 42 when the rotating drum 2 is mounted on the mixing device 1. 18 and 19, the first friction wheel 71 fixed to the other end of the rotating shaft 62 and the second friction wheel 76, 76 fixed to the other end of the drive shafts 75, 75 in FIGS. Contact as shown. At this time, the second friction wheels 76, 76 are urged in directions opposite to each other by the tension of the spring member 77, so that the first friction wheel 71 and the second friction wheels 76, 76 The contact can be made firmly so that the rotation can be reliably transmitted without causing slippage.
[0066]
Thereafter, when the drive means 64 is driven, the rotation thereof is changed from the belt 73a → the transmission shaft 73 → the belts 75a, 75a → the drive shafts 75, 75 → the second friction wheels 76, 76 → the first friction wheel 71 → the rotation shaft 62. To rotate the crushing blade 63 attached to one end of the rotating shaft 62. As a result, the lump generated in the powder raw material due to the influence of moisture or the like at the time of stirring and mixing is satisfactorily crushed by the rotation of the crushing blade 63, and the powder raw material is uniformly stirred and mixed. Can be.
[0067]
As described above, in the second embodiment of the present invention, when the rotating drum 2 is mounted on the mixing device 1, the rotating drum 2 is held between the holding arm 53 and the rotating wheel 42. As a result, the first friction wheel 71 of the transmission means 70 and the second friction wheels 76, 76 can be easily brought into contact with each other, so that the driving means 64 and the rotating shaft 62 can be drivably connected. As in the first embodiment, the belt 65c may be wound around the first pulley 65a fixed to the rotating shaft 62 and the second pulley 65b fixed to the driving shaft of the driving means 64, Work such as applying tension to the belt 65c by the urging means 65d can be omitted, and as a result, the work of getting the rotary drum 2 on and off the mixing device 1 can be performed more quickly and easily.
[0068]
When the contact state between the first friction wheels 71 and the second friction wheels 76, 76 is released, the support shafts 75, 75 on which the second friction wheels 76, 76 are fixed are inserted. Since the members 74, 74 are loosely fitted to the transmission shaft 73, they tend to tilt clockwise or counterclockwise from the state shown in FIGS. 18 and 19, but face the support members 74, 74. Since the support members 78, 78 are erected at the positions, the support members 74, 74 are supported by either one of the support members 78, 78, and one of the second friction wheels 76, 76 is held. It does not tilt to a position where it comes into contact with the fixed frame 72. Therefore, when the rotary drum 2 is held again between the holding arm 53 and the rotating wheel 42, the support members 74, 74 immediately return to the state shown in FIGS. And the second friction wheels 76, 76 can be brought into good contact with each other.
[0069]
The rotation of the driving means 64 is transmitted to the transmission shaft 73 once and then transmitted to the driving shafts 75, 75. However, the present invention is not limited to this. For example, the rotation of the driving means 64 is directly transmitted without passing through the transmission shaft 73. 75, 75 may be transmitted. Further, the support members 74, 74 may be formed such that the distance (length) between the transmission shaft 73 and the drive shafts 75, 75 is variable. Further, the driving means 64 and the transmission shaft 73, and the transmission shaft 73 and the driving shaft 75 may be drivably connected by means (for example, a chain or the like) other than the belts 73a and 75a.
[0070]
Next, a third embodiment of the present invention will be described. In the third embodiment, the same members as those in the first embodiment will be described using the same reference numerals. The difference between the third embodiment and the first and second embodiments lies in the configuration of the transmitting means for drivingly connecting the rotating shaft 62 and the driving means 64 in the crushing means 6. As shown in FIG. 20, the transmission means 80 of the third embodiment is constituted by a shaft coupling means such as an Oldham coupling for connecting the other end of the rotating shaft 62 and the driving shaft 64a of the driving means 64 in a detachable manner. Have been.
[0071]
When the driving means 64 is driven, the rotation is transmitted to the rotating shaft 62 via the transmitting means 80, and the crushing blade 63 attached to one end of the rotating shaft 62 is rotationally driven. As a result, the lump generated in the powder raw material at the time of stirring and mixing is crushed favorably by abutting against the crushing blade 63, and the powder raw material can be uniformly stirred and mixed.
[0072]
In the third embodiment, when the connection between the driving means 64 and the rotating shaft 62 is released, for example, the driving means 64 is moved rightward in FIG. 20 (in this case, the driving means 64 is The connection state can be easily released by dividing the transmission means 80.
[0073]
As described above, in the third embodiment of the present invention, the driving means 64 and the rotary shaft 62 are connected in a detachable manner by the transmission means 80 comprising shaft coupling means such as Oldham coupling. The transmission means 80 can simplify its configuration and can transmit the driving force of the driving means 64 to the rotary shaft 62 without loss.
[0074]
In the first embodiment of the present invention, the driving means 64 of the crushing means 6 and the rotating shaft 62 are connected by the transmitting means 65 or the connection is released while the rotating drum 2 is lying down. Alternatively, the connection and disconnection of the drive unit 64 and the rotating shaft 62 by the transmission unit 65 may be performed in a state where the rotary drum 2 is upright. The same applies to the case of connecting and disconnecting the driving means 64 and the rotating shaft 62 by the transmission means 80 in the third embodiment.
[0075]
【The invention's effect】
According to the first aspect of the present invention, a rotating means for rotating a rotating drum containing a plurality of types of powder raw materials, a swinging / reversing means for swinging / reversing the rotating drum within a predetermined angle range, A mixing device including a pair of cylinder-driven holding means for holding the rotating drum between the rotating means and a crushing means for crushing a lump generated in the powder raw material during stirring and mixing; With this configuration, the step of getting on and off the mixing device of the rotary drum is performed in a state where the rotary drum is held between the holding means and the rotating means, from a state in which the rotary drum is erected by the swinging / reversing means to a state in which the rotary drum is turned over, or By inverting from the lying down state to the upright state, it is possible to carry out quickly, easily and safely. In addition, a lump generated in the powder raw material at the time of stirring and mixing can be satisfactorily crushed by the crushing means, so that the powder material can be uniformly stirred and mixed.
[0076]
According to the second aspect of the present invention, a rotary joint disposed on one end side of the rotary drum, a rotary shaft rotatably inserted through the rotary joint, and projecting into the rotary drum through the rotary joint. A crushing blade attached to one end of the rotating shaft for crushing lumps generated in the powder raw material; and a transmitting means to the other end of the rotating shaft that penetrates the rotary joint and projects outside the rotary drum. And the driving means for driving the crushing blades to rotate, the crushing means is constituted, so that the rotating drum and the rotating shaft of the crushing means are on the inner and outer peripheral sides of the rotary joint. In this case, it is possible to rotate each of them individually, and as a result, the powder raw material that is scraped up in the circumferential direction with the rotation of the rotary drum is disintegrated in the rotary drum in the direction opposite to the rotary drum. By making good contact with the wings, The mass has occurred in the powder material can be quickly and easily disintegration.
[0077]
According to the third aspect of the present invention, the rotating shaft of the crushing means and the driving means are connected in a separable state via the transmitting means. The rotating shaft inserted into the rotating joint arranged on the rotating drum and the driving means installed in the mixing device can be easily separated by releasing the connection state by the transmitting means. Thus, the getting on and off operation of the rotating drum can be performed smoothly without any trouble.
[0078]
According to the invention of claim 4, the transmission means of the crushing means applies a predetermined tension to the belt removably wound between pulleys fixed to the rotating shaft and the driving means, respectively. When stirring and mixing the powder raw materials, for example, after the rotating drum is mounted on the mixing device, the urging means is applied to the belt wound between the pulleys. By applying the tension, the driving force of the driving means can be transmitted to the rotating shaft and the crushing blade attached to one end thereof can be satisfactorily driven to rotate, and when the rotating drum is lowered from the mixing device, By releasing the urging by the urging means and removing the belt from between the pulleys, the connection state between the rotating shaft and the driving means can be easily released, which is convenient.
[0079]
According to the fifth aspect of the present invention, the transmission means of the crushing means is drivably connected to the first friction wheel fixed to the rotary shaft via a belt or the like to the driving means, and the first friction The rotary drum is provided to the mixing device by including a pair of second friction wheels that are in sliding contact with the vehicle, and biasing means for biasing the pair of second friction wheels in directions opposite to each other. When the vehicle is loaded, the first friction wheel automatically slides between the pair of second friction wheels by holding the rotating drum by the holding means, so that the driving force of the driving means is applied to the rotating shaft. The crushing blade attached to one end thereof can be satisfactorily rotated and driven, and when the rotating drum is lowered from the mixing device, the holding state by the holding means is released, whereby the first The sliding state between the friction wheel and the pair of second friction wheels is automatically resolved. As a result, the connection state between the rotating shaft and the driving means can be easily released, so that the connection and disconnection of the rotating shaft and the driving means by the transmission means can be performed without requiring any manual operation. It is very convenient. In addition, since the pair of second friction wheels are urged in the directions opposite to each other by the urging means, it is possible to make firm contact with the first friction wheel, as a result, The driving force from the driving means can be reliably transmitted to the rotating shaft without causing slippage between the first friction wheel.
[0080]
According to the invention as set forth in claim 6, the transmitting means of the crushing means is constituted by the shaft coupling means for connecting the rotating shaft and the driving means in a detachable manner, so that the rotating shaft and the driving means are plural. There is an advantage that the drive connection can be easily performed in a detachable state without using the member described above, and the driving force from the driving means can be transmitted to the rotary shaft without loss.
[0081]
According to the invention as set forth in claim 7, air is injected into the rotary joint of the crushing means from the side of the rotary joint toward the inside of the rotary drum so as to prevent powder material from entering the rotary joint. The above-described intrusion prevention means makes it possible to satisfactorily prevent the powder material from entering the rotary joint by the air injection. As a result, the seal member provided in the rotary joint is In addition to preventing deterioration and damage at an early stage due to intrusion of the powder, the function of the bearing provided in the rotary joint is degraded by powder material entering the rotary joint due to deterioration and damage of the seal member. Can be satisfactorily prevented.
[0082]
According to the invention described in claim 8, the intrusion prevention means provided in the rotary joint of the crushing means is configured to branch and supply a part of the air supplied to the cylinder driving the holding means. As a result, it is not necessary to prepare a plurality of air supply sources, so that the size of the mixing device can be prevented from being increased in size.
[0083]
According to the ninth aspect of the present invention, since the crushing means is provided with the load detecting means for detecting a load generated when the function of the rotary joint is reduced, when the function of the rotary joint is reduced, By stopping the rotating means immediately upon receiving the detection signal from the load detecting means, it is possible to satisfactorily prevent the rotating operation of the rotating drum from being adversely affected.
[Brief description of the drawings]
FIG. 1 is a front view showing a mixing device of the present invention.
FIG. 2 is a side view showing the mixing device of the present invention.
FIG. 3 is a side view showing holding means in the mixing device of the present invention.
FIG. 4 is a pneumatic system diagram of the mixing device of the present invention.
FIG. 5 is a side view showing a crushing means in the mixing device of the present invention.
FIG. 6 is a longitudinal sectional side view showing an enlarged main part of the crushing means.
FIG. 7 is an enlarged longitudinal sectional side view showing a main part of the rotary joint.
FIG. 8 is an enlarged longitudinal sectional front view of a main part of the rotary joint.
FIG. 9 is a front view showing crushing means.
FIG. 10 is a front view showing a transmission unit.
FIG. 11 is a vertical sectional front view showing a load detecting unit.
FIG. 12 is a vertical sectional front view showing an operation state of the load detecting means.
FIG. 13 is a side view showing a state in which the rotary drum has been transported to the vicinity of the mixing device.
FIG. 14 is a side view showing a state where the rotary drum is held.
FIG. 15 is a side view showing a state in which the rotary drum is inverted with the loading / unloading port facing downward.
FIG. 16 is a side view showing a state in which the rotating drum is transported by the transport carriage.
FIG. 17 is a side view showing a transmission means according to a second embodiment of the present invention.
FIG. 18 is a front view showing the transmission means of the second embodiment.
FIG. 19 is an enlarged front view showing a main part of the transmission means of the second embodiment.
FIG. 20 is a side view showing a third embodiment of the present invention.
[Explanation of symbols]
1 Mixing device
2 rotating drum
3 Oscillation / reversal means
4 rotating means
5 Holding means
6 Crushing means
31 Rocking table
35 Oscillating / reversing motor
42 rotating wheels
43 Motor for rotation
53 Holding Arm
53a rotating wheel
54a, 54b cylinder
61 Rotary joint
62 Rotation axis
63 crushing blade
64 drive means
65, 70, 80 Transmission means
66 Load detection means
A1 to A5 air flow path

Claims

Rotating means for rotating a rotating drum containing a plurality of types of powder raw materials, swinging / reversing means for swinging / reversing the rotating drum within a predetermined angle range, and holding the rotating drum between rotating means; A mixing device comprising: a pair of holding means driven by a cylinder to be held; and crushing means for crushing a lump generated in the powder raw material at the time of stirring and mixing.

The crushing means includes a rotating joint disposed on one end side of the rotating drum, a rotating shaft rotatably inserted through the rotating joint, and a rotating shaft penetrating through the rotating joint and protruding into the rotating drum. And a crushing blade attached to one end of the rotary shaft for crushing a lump generated in the powdery raw material, and connected to the other end of a rotating shaft penetrating the rotary joint and protruding out of the rotary drum via a transmission means. 2. The mixing device according to claim 1, further comprising a driving unit configured to rotate and drive the crushing blade.

3. The mixing apparatus according to claim 2, wherein the transmission unit is configured to connect the rotation shaft and the driving unit in a separable state.

The transmission means includes a belt detachably wound between pulleys fixed to the other end of the rotation shaft and the drive shaft of the drive means, and an urging means for applying a predetermined tension to the belt. 4. The mixing device according to claim 2, wherein the mixing device is provided.

The transmission means is drivably connected to a first friction wheel fixed to the other end of the rotation shaft via a drive shaft of a drive means and a belt or the like, and a pair of first friction wheels slidingly contact the first friction wheel. The mixing apparatus according to claim 2, further comprising: a second friction wheel; and a biasing unit configured to bias the pair of second friction wheels in directions opposite to each other.

4. The mixing apparatus according to claim 2, wherein said transmission means comprises a shaft coupling means for connecting the other end of the rotating shaft and the drive shaft of the drive means so as to be able to come and go.

The rotary joint is provided with intrusion prevention means configured to prevent powder material from entering the rotary joint by injecting air from the rotary joint side toward the inside of the rotary drum. 3. The mixing device according to claim 2, wherein:

8. The mixing device according to claim 7, wherein the intrusion prevention unit is configured to branch and supply a part of air supplied to a cylinder that drives the holding unit.

3. The mixing device according to claim 2, wherein the crushing means includes a load detecting means for detecting a load generated when the function of the rotary joint is reduced.