JP3590363B2 - Granule supply device - Google Patents

Granule supply device Download PDF

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Publication number
JP3590363B2
JP3590363B2 JP2001174658A JP2001174658A JP3590363B2 JP 3590363 B2 JP3590363 B2 JP 3590363B2 JP 2001174658 A JP2001174658 A JP 2001174658A JP 2001174658 A JP2001174658 A JP 2001174658A JP 3590363 B2 JP3590363 B2 JP 3590363B2
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granules
pipe member
granule
diameter
tip
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JP2002365173A (en
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昭宣 吉澤
玄彦 植田
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株式会社あさひ総研
株式会社セイシン企業
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Description

【0001】
【発明の属する技術分野】
本発明は、医薬用製剤、特に医薬用錠剤の原料となる顆粒又はそのまま医薬品となる顆粒及び細粒(以下、単に顆粒という)や、食品、又はセラミックの原料となる顆粒等を運搬及び供給する顆粒物供給装置に関する。
【0002】
【従来の技術】
従来、例えば、医薬製剤、特に医薬用錠剤の原料となる顆粒を製造する場合、造粒機により形成し、この顆粒を打錠する方法が採られている。このような医薬用錠剤の製造では錠剤の原料となる顆粒の圧縮強度などの物性を所定の範囲にしなくてはならない。
【0003】
また、そのまま医薬品となる顆粒や細粒も同様にして測定されるが、これらの顆粒や細粒についても、圧縮強度などの物性を所定の範囲にしなくてはならない。
【0004】
このため、医薬品等となる顆粒や細粒を製造する場合、これらの顆粒や細粒の硬度を顆粒物性測定装置によって測定する。この顆粒物性測定装置としては、一般的に、金属プレートからなる測定基板上に測定対象となる顆粒等を載置し、ロードセルの先端に測定用チップを取り付けたプローブで上部より加圧してその荷重変位曲線を記録し、この荷重変位曲線の変曲点から顆粒等の硬度を判断するものが挙げられる。
【0005】
【発明が解決しようとする課題】
しかしながら、このような顆粒物性測定装置では、顆粒を測定基板の所定位置に配置して、ミクロ測定装置で一つずつ測定しようとしても、ミクロ測定装置の所定位置に手作業により微少な顆粒を位置決めするのは事実上不可能であり、測定時に位置が悪いと物性の測定が正確に行えないという問題がある。
【0006】
また、顆粒の物性は通常広範囲に分布するため、一種の顆粒について最低でも数十個測定しなければならないため、その都度、顆粒を所定位置に位置決めするのは極めて煩雑であるという問題がある。
【0007】
このように、従来の顆粒物性測定装置では、測定基板上に顆粒を一粒ずつ正確に位置決め供給するのが実質で不可能なため、測定基板上に複数の顆粒をばらまき、測定基板を移動することによって顆粒を位置決めして物性の測定を行っていた。このような位置決めでは、測定された顆粒の選択的且つ恣意的となる欠点が避けられず、位置決めに時間がかかり測定者の疲労が著しくて測定個数を多くすることができないという問題がある。
【0008】
本発明は、このような事情に鑑み、所定位置に所定範囲の粒径の顆粒を確実に供給することができると共に顆粒の供給を自動化した顆粒物供給装置を提供することを課題とする。
【0009】
【課題を解決するための手段】
上記課題を解決する本発明の第1の態様は、顆粒が堆積するワークトレイと、所定の直径を有すると共に基端部が吸引装置に接続されて所定以上の直径の顆粒がその先端で吸引保持されるパイプ部材と、該パイプ部材を軸方向及び半径方向に移動自在に保持する保持部と、前記パイプ部材の先端部側に前記ワークトレイの上方に設けられて、且つ当該パイプ部材の先端部を挿通可能で且つ所望の直径の顆粒を挿通できると共に所望以上の直径の顆粒を前記パイプ部材の先端で吸引保持した状態で通過させることによりその開口縁部で払い落とすことができる直径を有する挿通孔からなる挿通部を有する選別部とを具備し、顆粒が先端に吸引保持された前記パイプ部材を前記保持部材が軸方向及び半径方向に移動することで所定位置に顆粒を供給することを特徴とする顆粒物供給装置にある。
【0010】
本発明の第2の態様は、第1の態様において、前記挿通部が、供給する顆粒の最小粒径の2倍以下の内径で且つ供給する顆粒の最大粒径よりも大きな内径を有することを特徴とする顆粒物供給装置にある。
【0011】
本発明の第3の態様は、第1又は2の態様において、前記選別部が弾性変形可能な弾性部材からなり、前記挿通部が前記弾性部材に形成された複数の切り込みからなることを特徴とする顆粒物供給装置にある。
【0012】
本発明の第4の態様は、第1〜3の何れかの態様において、顆粒を供給する所定位置には、前記パイプ部材の先端で保持された顆粒を挿通可能な内径の顆粒供給孔を有するガイド部材が設けられており、該ガイド部材の顆粒供給孔を介して顆粒を所定位置に供給することを特徴とする顆粒物供給装置にある。
【0013】
かかる本発明では、顆粒を所定位置に容易に且つ確実に供給することができ、且つ粒径を揃えた顆粒を供給できる。
【0014】
【発明の実施の形態】
以下、本発明を実施例に基づいて説明するが、本発明は、これらの実施例により限定されるものではない。
【0015】
(実施形態1)
図1は、本発明の実施形態1に係る顆粒物供給装置の概略平面図及び要部拡大断面図である。
【0016】
図示するように、本発明の顆粒物供給装置10は、顆粒100が堆積されるワークトレイ20と、所定の内径の貫通孔を有する管形状のパイプ部材30と、パイプ部材30を鉛直方向に保持すると共にパイプ部材30の軸方向及び半径方向に移動自在に設けられた保持部40と、パイプ部材30の基端部に接合された吸引装置50とを具備する。
【0017】
ワークトレイ20は、顆粒100を投入することでその内部に顆粒100を堆積するものであり、その底面には、略中心を頂点として円錐状の凹部となるように設けられた円錐部21を有する。ワークトレイ20に投入された顆粒100は、顆粒100の量に関わらず、円錐部21の頂点、すなわちワークトレイ20の略中心に自然に寄せられて堆積される。
【0018】
なお、本実施形態では、ワークトレイ20の底面に円錐部21を設けるようにしたが、これに限定されず、例えば、ワークトレイ20の底面を平面状、すなわちワークトレイ20の内面を円筒状としてもよい。
【0019】
パイプ部材30は、先端側に所定の内径の貫通孔31を有し、先端32で顆粒100を吸引保持する小径管部33と、小径管部33よりも若干大きな外径を有し、基端部34にフレキシブル管51を介して吸引装置50の接続された大径管部35とが、ゴム等の弾性部材からなるジョイント部36により接続されている。
【0020】
このようなパイプ部材30は、小径管部33の先端32がワークトレイ20の略中央、すなわち底面に設けられた円錐部21の頂点に対向して、軸方向が鉛直方向となるように保持部40に保持されている。
【0021】
そして、パイプ部材30は、基端部34に接続された吸引装置50に吸引動作を行わせることで貫通孔31を介して小径管部33の先端32で顆粒100を吸引保持する。このとき、詳しくは後述するが、吸引装置50により吸引された顆粒は、パイプ部材30の先端32の貫通孔31が開口する縁部に当接されてパイプ部材30に保持される。このため、貫通孔31は、吸引保持する所定範囲の粒径の顆粒よりも若干小さい内径で形成されている。本実施形態では、例えば、吸引保持する顆粒の粒径を、0.3mm〜0.5mmとすると、貫通孔31の内径は、0.3mmよりも若干小さければよいが、顆粒がその製造段階において、歪んで形成されることもあり、また、顆粒が貫通孔31内を通過するには、クリアランスも必要であるため、本実施形態では貫通孔31の内径を略0.3mmとした。
【0022】
なお、吸引装置50は、パイプ部材30の先端32で顆粒100を吸引保持でき、且つ吸引により顆粒100を破壊しない吸引能力を有すると共に排気能力を有する装置であれば、特に限定されず、例えば、真空ポンプ又はエジェクタ等が挙げられる。
【0023】
このようなパイプ部材30が保持される保持部40は、パイプ部材30の軸方向及び半径方向に移動自在に設けられており、パイプ部材30を移動することで、パイプ部材30による顆粒100の取得及び供給を行う。この保持部40の移動方法は、特に限定されず、電動モータ、油圧及び空気圧等によりギヤ、ベルトやポンプ等を介して移動させることができる。
【0024】
また、本実施形態では、詳しくは後述するが、パイプ部材30の先端32とワークトレイ20との間にパイプ部材30の小径管部33を挿通可能な挿通孔である挿通部61を有し、且つパイプ部材30の先端32で顆粒100を吸引保持した状態で挿通部61を挿通させることにより、余分な顆粒を払い落とす選別部60が設けられている。
【0025】
ここで、このような顆粒物供給装置10による一連の顆粒の供給方法について詳細に説明する。なお、図2〜図4は、顆粒の供給方法を示す要部拡大断面図である。
【0026】
まず、図2(a)に示すように、保持部40が鉛直方向下側に移動することで、この保持部40が保持したパイプ部材30の先端32を、ワークトレイ20近傍まで移動させる。
【0027】
このとき、パイプ部材30の先端32は、ワークトレイ20の略中心、すなわち、ワークトレイ20の円錐部21の頂点近傍まで移動するが、顆粒100は、ワークトレイ20に保持された量に関わらず、円錐部21の頂点に寄せられて堆積されているため、パイプ部材30の先端32は、必ず顆粒100近傍まで移動される。
【0028】
次に、図2(b)に示すように、パイプ部材30の基端部34に接続された吸引装置50に吸引動作を行わせることにより、パイプ部材30の先端32で一粒の顆粒101を吸引保持させる。
【0029】
このパイプ部材30による顆粒101の吸引保持では、図3(a)に示すように、パイプ部材30の貫通孔31の内径よりも小さな粒径の顆粒102や、顆粒100の造粒時のカス及び微細なゴミ等が吸引装置50により吸引されて、ワークトレイ20から除去される。したがって、パイプ部材30と吸引装置50との間には、ゴミ等を捕獲するトラップを設けるのが好ましい。
【0030】
なお、パイプ部材30の先端32が顆粒101を吸引保持したかどうかは、例えば、検出センサや吸引装置50の吸引負荷の測定などによって判別することができる。
【0031】
次に、図2(c)に示すように、パイプ部材30の先端32が一粒の顆粒101を吸引保持したと判別したら、保持部40が鉛直方向上側、すなわちパイプ部材30をワークトレイ20とは反対側に移動することで、パイプ部材30は、ワークトレイ20から一粒の顆粒101を取得することができる。
【0032】
このような一連のパイプ部材30による顆粒101の取得では、パイプ部材30の先端32に複数の顆粒が吸引保持される虞がある。
【0033】
このため、本実施形態では、パイプ部材30の先端32とワークトレイ20との間に、選別部60を設けた。
【0034】
この選別部60は、余分な顆粒を払い落とすためのものであり、詳しくは、選別部60の挿通部61にパイプ部材30の先端32を挿通した状態で、先端32に顆粒を吸引保持させる。このとき、パイプ部材30の先端32に吸引保持された顆粒が、複数個の場合は、パイプ部材30の先端32が挿通部61を通過した際に、余分な顆粒を挿通部61の開口縁部に当接させて払い落とすことができる。
【0035】
このように、選別部60によって余分な顆粒を払い落とすためには、挿通部61の内径を、所定の内径、例えば、顆粒の粒径の略2倍以下とすればよい。すなわち、0.3mm〜0.5mmの粒径の顆粒を吸引保持させるには、選別部60の挿通部61の直径を0.6mmとすればよい。
【0036】
一方、顆粒の物性を測定する測定装置などでは、所定範囲の粒径の顆粒を測定しなくてはならないため、そのような測定装置に顆粒を供給する際に、所定範囲の粒径の顆粒、本実施形態では、0.3mm〜0.5mmの顆粒を供給する必要がある。
【0037】
このため、ワークトレイ20に所定範囲の粒径の顆粒を堆積させるか、又は選別部60で所定範囲以上の粒径の顆粒を払い落とすようにすれば、所定範囲の粒径の顆粒を容易に供給することができる。
【0038】
所定範囲の粒径の顆粒を選別してワークトレイ20に堆積させる方法としては、特に限定されないが、例えば、常法により造粒した顆粒を篩い等にかけることで選別することができる。
【0039】
一方、選別部60で所定範囲の粒径の顆粒を選別するには、選別部60の挿通部61の直径を所定範囲の粒径よりも若干大きくすれば、挿通部61の直径以上の粒径の顆粒は挿通部61を通過することができず、挿通部61の開口縁部で払い落とされる。このような状態を図3(b)及び(c)に示す。
【0040】
まず、図3(b)に示すように、パイプ部材30の先端部32が、選別部60の挿通部61を挿通した状態で所定範囲の粒径よりも大径の顆粒103を吸引保持し、保持部40がパイプ部材30の軸方向に移動する。
【0041】
このとき、図3(c)に示すように、パイプ部材30の先端32に吸引保持された大径の顆粒103は、選別部60の挿通部61を挿通することができず、挿通部61の開口縁部に当接して払い落とされる。
【0042】
このように、選別部60の挿通部61を所定範囲の粒径よりも若干大きな直径とすることで、所定範囲の粒径の顆粒のみを選別して取得することができる。
【0043】
また、ワークトレイ20に予め顆粒を篩い等で選別して所定範囲の粒径の顆粒のみを保持させるのに比べ、選別部60により自動的に所定範囲の粒径の顆粒を選別することができるため、供給を効率よく行うことができる。
【0044】
なお、本実施形態では、例えば、選別したい顆粒の粒径が0.3mm〜0.5mmであるため、選別部60の挿通部61の直径を0.55mmとして、それ以上の粒径の顆粒103が選別部60の挿通部61を通過できないようにした。なお、挿通部61を0.55mmとすることで、上述したようにパイプ部材30の先端32が複数の顆粒を吸引保持した際にも、余分な顆粒を払い落とすという条件を満たすことができる。
【0045】
また、本実施形態では、選別部60に所定の直径の挿通部61を設けるようにしたが、これに限定されず、例えば、選別部60の挿通部61に直径を可変させる径可変平板を設けるようにしてもよい。このように径可変平板を設けることにより、顆粒の所望の粒径に合わせて挿通部61の直径を容易に設定でき、供給する顆粒の粒径を任意の範囲に容易に変更することができる。
【0046】
さらに、本実施形態の選別部60は、ある程度剛性のある部材に挿通部61を形成したものであるが、弾性部材を用いてもよい。弾性部材は、特に限定されず、例えば、ゴム、樹脂等を挙げることができる。
【0047】
選別部に弾性部材を用いた場合には、挿通部は、挿通孔としてもよいが、一点を中心として複数の切り込みを入れることによっても形成することができる。このように選択部を弾性部材で形成する場合には、弾性変形のし易さ、すなわち、切り込みの数や形状等を変更することにより、顆粒の所望の粒径に応じて直径の異なる挿通部を有する選別部を低コストで製造できる。また、一つの選別部に複数の挿通部を有するようにしてもよいし、交換するようにしてもよい。
【0048】
このようにして、所定範囲の粒径の顆粒101を取得した後は、所定位置に顆粒101を供給する。
【0049】
まず、パイプ部材30の先端32で吸引保持された顆粒101を所定の位置に供給するには、図4(a)に示すように、保持部40が所定位置までパイプ部材30の半径方向に移動する。
【0050】
次に、図4(b)に示すように、保持部40がパイプ部材30の軸方向に移動することでパイプ部材30の先端32を所定位置に移動する。
【0051】
その後、図4(c)に示すように、吸引装置50による吸引動作を停止させると共に排気動作を行わせることで顆粒101をパイプ部材30の先端32から脱離し、所定位置に顆粒101を供給することができる。なお、本実施形態では、吸引装置50による吸引動作の停止及び排気動作を行わせることでパイプ部材30から確実に顆粒101を脱離させるようにしたが、顆粒101がパイプ部材30から脱離できれば、吸引動作を停止させるだけでもよい。
【0052】
この顆粒101の供給では、顆粒101は微少なため吸引装置50を停止させた反動や顆粒101と供給位置との空間などにより顆粒101の供給位置が定まらず、所定位置に供給するのは困難である。このため、本実施形態では、顆粒101を供給する位置にパイプ部材30の先端32及びそれが吸引保持した顆粒101を挿通可能な顆粒供給孔71を有するガイド部材70を設けた。
【0053】
このガイド部材70は、本実施形態では、例えば、パイプ部材30の軸方向の移動に伴って所定位置まで降下し、パイプ部材30が顆粒101を脱離してパイプ部材30が上昇した後に、鉛直方向に上昇するようになっている。すなわち、ガイド部材70は、図4(b)に示すように、パイプ部材30の軸方向の移動に伴って降下し、図4(c)に示すように、降下した状態でパイプ部材30の先端32から脱離された顆粒101を顆粒供給孔71内に保持する。そして、図4(d)に示すように、ガイド部材70がパイプ部材30の上昇に伴って上昇することで顆粒101は所定の位置に位置決め供給される。
【0054】
このように、本実施形態の顆粒物供給装置10によれば、所定範囲の粒径の顆粒を一粒ずつ容易に且つ確実に供給することができると共に顆粒を所定の位置に容易に位置決めして供給することができる。
【0055】
また、このような顆粒物供給装置10では、所定範囲の粒径の顆粒を一粒ずつ所定の位置に供給することができるため、例えば、医薬製剤等の原料である顆粒の物性を測定する顆粒物性の測定装置等に設けることにより、供給の手間を大きく省くことができ、検査時間の短縮や正確な物性の測定を行うことができる。
【0056】
(他の実施形態)
以上、本発明の実施形態1について説明したが、顆粒供給装置の基本的構成は上述した例に限定されるものではない。
【0057】
例えば、ワークトレイ20に投入した顆粒100が確実にワークトレイ20の略中心に寄せられて堆積されるように、ワークトレイ20に振動を与える振動装置を設けるようにしてもよい。この場合、特にワークトレイ20の底面に円錐部21を設けなくてもよく、ワークトレイの底面を平面状、すなわちワークトレイの内面を円筒状としても、底面の略中央に振動を加えることで顆粒100をワークトレイの略中心に寄せて堆積することができる。
【0058】
このような例を図5に示す。なお、図5は、他の実施形態に係る顆粒供給装置の概略平面図及び要部拡大断面図である。
【0059】
図示するように、ワークトレイ20Aは、円筒形状を有し底面が平面状に形成されている。
【0060】
また、このワークトレイ20Aの底面の略中央に接触して振動を与える振動装置80は、ワークトレイ20Aに振動を与えることができれば特に限定されず、例えば、超音波や駆動モータ等により振動を与える装置を挙げることができる。本実施形態では、振動装置80として、ワークトレイ20Aの外周に接触して振動を与える振動部81と、この振動部81を駆動する駆動モータ82とで構成した。
【0061】
このような振動装置80によるワークトレイ20Aへの振動は、常に振動を与えるようにしてもよく、ワークトレイ20Aに顆粒100を供給した際や顆粒100の取得毎等、所望のタイミングで振動を与えるようにしてもよい。
【0062】
なお、底面に円錐部21を有するワークトレイ20に振動装置80を設ける際には、振動装置80の振動部81はワークトレイ20の何れに接触しても、顆粒100を効率よく略中央に寄せて堆積することができる。
【0063】
【発明の効果】
以上説明したように、本発明によれば、先端に顆粒を吸引保持するパイプ部材を軸方向及び半径方向に移動することで顆粒を所定の位置に供給するようにし、しかも、余分な顆粒を払い落とす払い落とし部を設けるようにしたため、顆粒を容易に且つ確実に所定位置に一粒ずつ供給することができ、且つ供給する顆粒の粒径を所定の範囲で選別することができる。また、供給位置にガイド部材を設けることによって、顆粒を所定の位置に容易に位置決めして供給することができる。
【図面の簡単な説明】
【図1】本発明の実施形態1に係る顆粒物供給装置の概略平面図及び要部拡大断面図である。
【図2】本発明の実施形態1に係る顆粒の供給方法を示す要部拡大断面図である。
【図3】本発明の実施形態1に係る顆粒の供給方法を示す要部拡大断面図である。
【図4】本発明の実施形態1に係る顆粒の供給方法を示す要部拡大断面図である。
【図5】本実施形態の他の実施形態に係る顆粒供給装置の概略平面図及び要部拡大断面図である。
【符号の説明】
10 顆粒物供給装置
20、20A ワークトレイ
30 パイプ部材
31 貫通孔
32 先端
33 小径管部
34 基端部
35 大径管部
36 ジョイント部
40 保持部
50 吸引装置
60 選別部
70 ガイド部材
80 振動装置
81 振動部
82 駆動モータ
100、101、102、103 顆粒
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention conveys and supplies granules used as raw materials for pharmaceutical preparations, particularly pharmaceutical tablets or granules and fine granules (hereinafter simply referred to as granules) used as raw materials for pharmaceuticals, granules used as raw materials for foods or ceramics, and the like. The present invention relates to a granule supply device.
[0002]
[Prior art]
Conventionally, for example, in the case of producing granules as raw materials for pharmaceutical preparations, particularly pharmaceutical tablets, a method of forming the granules with a granulator and compressing the granules has been adopted. In the production of such a pharmaceutical tablet, the physical properties such as the compressive strength of the granules used as the raw material of the tablet must be within a predetermined range.
[0003]
In addition, granules and fine granules that are directly used as pharmaceuticals are measured in the same manner, but physical properties such as compressive strength of these granules and fine granules must be within a predetermined range.
[0004]
For this reason, when manufacturing granules or fine granules to be used as pharmaceuticals or the like, the hardness of these granules or fine granules is measured by a granule physical property measuring device. In general, as a device for measuring physical properties of granules, a granule or the like to be measured is placed on a measurement substrate formed of a metal plate, and the load is applied by applying pressure from above to a probe having a measurement chip attached to the tip of a load cell. A method in which a displacement curve is recorded and the hardness of granules or the like is determined from the inflection point of the load displacement curve.
[0005]
[Problems to be solved by the invention]
However, in such a granule physical property measuring device, even if the granules are arranged at a predetermined position on a measurement substrate and the micro measuring device is to be measured one by one, fine granules are manually positioned at the predetermined position of the micro measuring device. This is practically impossible, and there is a problem that if the position is bad at the time of measurement, the measurement of physical properties cannot be performed accurately.
[0006]
In addition, since the physical properties of granules are generally distributed over a wide range, at least several tens of particles must be measured for one type of granule, and there is a problem that positioning the granule at a predetermined position each time is extremely complicated.
[0007]
As described above, in the conventional granule physical property measuring device, it is practically impossible to accurately position and supply the granules one by one on the measurement substrate, so that a plurality of granules are spread on the measurement substrate and the measurement substrate is moved. Thus, the physical properties were measured by positioning the granules. In such a positioning, there is an unavoidable disadvantage that the measured granules are selective and arbitrary, and there is a problem that positioning takes a long time and the measurer's fatigue is remarkable, so that the number of the measured particles cannot be increased.
[0008]
In view of such circumstances, an object of the present invention is to provide a granule supply device that can supply granules having a particle size in a predetermined range to a predetermined position without fail and automate the supply of granules.
[0009]
[Means for Solving the Problems]
A first aspect of the present invention for solving the above-mentioned problems is a work tray on which granules are deposited, and a granule having a predetermined diameter and having a base end connected to a suction device, and holding a granule having a predetermined diameter or more at a distal end thereof. A pipe member, a holding portion for movably holding the pipe member in the axial direction and the radial direction , and a tip end portion of the pipe member provided above the work tray on the tip end side of the pipe member. Having a diameter capable of passing granules having a desired diameter and allowing the granules having a diameter larger than desired to pass therethrough while being suction-held at the tip of the pipe member, so as to be able to be wiped off at the opening edge thereof. ; and a sorting unit that have the insertion portion comprising a hole, subjected granules the pipe member granules is sucked and held to the tip in position by the retaining member is moved axially and radially Lying in granule supply device according to claim to.
[0010]
According to a second aspect of the present invention, in the first aspect, the insertion portion has an inner diameter that is equal to or less than twice the minimum particle diameter of the supplied granules and is larger than the maximum particle diameter of the supplied granules. Characteristic granule supply device.
[0011]
According to a third aspect of the present invention, in the first or second aspect, the selection portion is formed of an elastic member capable of elastic deformation, and the insertion portion is formed of a plurality of cuts formed in the elastic member. In the granule supply device.
[0012]
According to a fourth aspect of the present invention, in any one of the first to third aspects, the predetermined position for supplying granules has a granule supply hole having an inner diameter through which the granules held at the tip of the pipe member can be inserted. The granule supply device is provided with a guide member, and supplies the granules to a predetermined position through a granule supply hole of the guide member.
[0013]
According to the present invention, the granules can be easily and reliably supplied to the predetermined position, and the granules having a uniform particle size can be supplied.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on examples, but the present invention is not limited to these examples.
[0015]
(Embodiment 1)
FIG. 1 is a schematic plan view and a main part enlarged cross-sectional view of a granule supply device according to Embodiment 1 of the present invention.
[0016]
As shown in the drawing, the granule supply device 10 of the present invention holds a work tray 20 on which granules 100 are deposited, a pipe-shaped pipe member 30 having a through hole with a predetermined inner diameter, and the pipe member 30 in a vertical direction. A holding unit 40 is provided movably in the axial direction and the radial direction of the pipe member 30, and a suction device 50 joined to the base end of the pipe member 30.
[0017]
The work tray 20 is for depositing the granules 100 therein by charging the granules 100, and has a conical portion 21 provided on the bottom surface thereof so as to form a conical concave portion with the approximate center being the vertex. . Regardless of the amount of the granules 100, the granules 100 put in the work tray 20 are naturally brought to the vertex of the conical portion 21, that is, substantially at the center of the work tray 20, and deposited.
[0018]
In the present embodiment, the conical portion 21 is provided on the bottom surface of the work tray 20. However, the present invention is not limited to this. For example, the bottom surface of the work tray 20 is flat, that is, the inner surface of the work tray 20 is cylindrical. Is also good.
[0019]
The pipe member 30 has a through-hole 31 having a predetermined inner diameter on the distal end side, a small-diameter pipe portion 33 for sucking and holding the granule 100 at the distal end 32, and an outer diameter slightly larger than the small-diameter pipe portion 33, and a proximal end. The large-diameter pipe section 35 connected to the section 34 via a flexible pipe 51 with a suction device 50 is connected by a joint section 36 made of an elastic member such as rubber.
[0020]
Such a pipe member 30 has a holding portion such that the tip end 32 of the small-diameter pipe portion 33 faces substantially the center of the work tray 20, that is, the vertex of the conical portion 21 provided on the bottom surface, and the axial direction is vertical. 40.
[0021]
Then, the pipe member 30 causes the suction device 50 connected to the base end portion 34 to perform a suction operation, thereby suction-holding the granules 100 at the distal end 32 of the small-diameter pipe portion 33 through the through-hole 31. At this time, as will be described in detail later, the granules sucked by the suction device 50 are held by the pipe member 30 by contacting the edge of the tip end 32 of the pipe member 30 where the through hole 31 opens. For this reason, the through hole 31 is formed with an inner diameter slightly smaller than the granules having a particle size in a predetermined range to be held by suction. In the present embodiment, for example, assuming that the particle size of the granules to be suction-held is 0.3 mm to 0.5 mm, the inner diameter of the through-hole 31 may be slightly smaller than 0.3 mm. In some embodiments, a clearance may be required to allow the granules to pass through the through-holes 31. In this embodiment, the inner diameter of the through-holes 31 is set to approximately 0.3 mm.
[0022]
In addition, the suction device 50 is not particularly limited as long as it can suck and hold the granules 100 at the distal end 32 of the pipe member 30 and has a suction capability that does not destroy the granules 100 by suction and has an exhaust capability. Examples include a vacuum pump and an ejector.
[0023]
The holding unit 40 holding the pipe member 30 is provided movably in the axial direction and the radial direction of the pipe member 30, and by moving the pipe member 30, the acquisition of the granules 100 by the pipe member 30 And supply. The method of moving the holding unit 40 is not particularly limited, and the holding unit 40 can be moved via a gear, a belt, a pump, or the like by an electric motor, hydraulic pressure, air pressure, or the like.
[0024]
Further, in the present embodiment, as will be described in detail later, an insertion portion 61 which is an insertion hole through which the small-diameter tube portion 33 of the pipe member 30 can be inserted is provided between the distal end 32 of the pipe member 30 and the work tray 20, In addition, a sorting unit 60 is provided for removing excess granules by inserting the insertion unit 61 with the granules 100 being suction-held at the distal end 32 of the pipe member 30.
[0025]
Here, a method of supplying a series of granules by the granule supply device 10 will be described in detail. 2 to 4 are enlarged sectional views of a main part showing a method for supplying granules.
[0026]
First, as shown in FIG. 2A, when the holding unit 40 moves downward in the vertical direction, the tip 32 of the pipe member 30 held by the holding unit 40 is moved to the vicinity of the work tray 20.
[0027]
At this time, the tip 32 of the pipe member 30 moves to substantially the center of the work tray 20, that is, to the vicinity of the vertex of the conical portion 21 of the work tray 20, but the granules 100 are irrespective of the amount held by the work tray 20. The tip 32 of the pipe member 30 is always moved to the vicinity of the granule 100 because it is accumulated near the vertex of the conical portion 21.
[0028]
Next, as shown in FIG. 2B, the suction device 50 connected to the base end portion 34 of the pipe member 30 performs a suction operation, so that one granule 101 is formed at the distal end 32 of the pipe member 30. Hold by suction.
[0029]
In the suction holding of the granules 101 by the pipe member 30, as shown in FIG. 3A, the granules 102 having a particle diameter smaller than the inner diameter of the through hole 31 of the pipe member 30, scum when the granules 100 are granulated, Fine dust and the like are sucked by the suction device 50 and removed from the work tray 20. Therefore, it is preferable to provide a trap for capturing dust and the like between the pipe member 30 and the suction device 50.
[0030]
Whether or not the tip end 32 of the pipe member 30 sucks and holds the granules 101 can be determined by, for example, measuring a suction load of the suction sensor 50 or a detection sensor.
[0031]
Next, as shown in FIG. 2C, when it is determined that the tip 32 of the pipe member 30 has suction-held one granule 101, the holding unit 40 moves vertically upward, that is, moves the pipe member 30 to the work tray 20. By moving to the opposite side, the pipe member 30 can obtain one granule 101 from the work tray 20.
[0032]
In such a series of acquisition of the granules 101 by the pipe member 30, a plurality of granules may be suction-held at the tip 32 of the pipe member 30.
[0033]
For this reason, in the present embodiment, the sorting unit 60 is provided between the tip 32 of the pipe member 30 and the work tray 20.
[0034]
The sorting unit 60 is for removing excess granules. More specifically, the sorting unit 60 sucks and holds the granules at the tip 32 with the tip 32 of the pipe member 30 inserted through the insertion portion 61 of the sorting unit 60. At this time, when a plurality of granules are suction-held at the tip 32 of the pipe member 30, when the tip 32 of the pipe member 30 passes through the insertion portion 61, excess granules are removed from the opening edge of the insertion portion 61. Can be paid off.
[0035]
As described above, in order to remove excess granules by the sorting unit 60, the inner diameter of the insertion unit 61 may be set to a predetermined inner diameter, for example, approximately twice or less the particle diameter of the granules. That is, in order to hold the granules having a particle diameter of 0.3 mm to 0.5 mm by suction, the diameter of the insertion portion 61 of the selection unit 60 may be set to 0.6 mm.
[0036]
On the other hand, in a measuring device or the like for measuring the physical properties of granules, since it is necessary to measure granules having a predetermined range of particle size, when supplying granules to such a measuring device, granules having a predetermined range of particle size, In the present embodiment, it is necessary to supply granules of 0.3 mm to 0.5 mm.
[0037]
For this reason, if granules having a particle size in a predetermined range are deposited on the work tray 20 or granules having a particle size in a predetermined range or more are removed by the sorting unit 60, granules having a particle size in a predetermined range can be easily obtained. Can be supplied.
[0038]
The method for selecting granules having a particle size within a predetermined range and depositing the granules on the work tray 20 is not particularly limited. For example, the granules can be selected by sieving granules formed by a conventional method.
[0039]
On the other hand, in order to select granules having a particle size in a predetermined range in the selection unit 60, if the diameter of the insertion portion 61 of the selection unit 60 is slightly larger than the particle size in the predetermined range, the particle size is larger than the diameter of the insertion portion 61. Can not pass through the insertion portion 61 and is washed off at the opening edge of the insertion portion 61. FIGS. 3B and 3C show such a state.
[0040]
First, as shown in FIG. 3B, the distal end portion 32 of the pipe member 30 sucks and holds the granules 103 having a diameter larger than a predetermined range in a state where the insertion portion 61 of the sorting portion 60 is inserted. The holding section 40 moves in the axial direction of the pipe member 30.
[0041]
At this time, as shown in FIG. 3C, the large-diameter granules 103 sucked and held at the distal end 32 of the pipe member 30 cannot pass through the insertion portion 61 of the sorting unit 60, and It is wiped off by contact with the opening edge.
[0042]
In this way, by setting the insertion portion 61 of the selection unit 60 to have a diameter slightly larger than the predetermined range of particle size, it is possible to select and obtain only granules having a predetermined range of particle size.
[0043]
In addition, compared with the case where granules having a predetermined range of particle size are retained in the work tray 20 in advance by sieving or the like, only granules having a predetermined range of particle size can be automatically selected by the selection unit 60. Therefore, the supply can be performed efficiently.
[0044]
In the present embodiment, for example, since the particle size of the granules to be sorted is 0.3 mm to 0.5 mm, the diameter of the insertion portion 61 of the sorting unit 60 is set to 0.55 mm, and the granules 103 having a larger particle size are set. Are not allowed to pass through the insertion section 61 of the selection section 60. By setting the insertion portion 61 to 0.55 mm, even when the tip 32 of the pipe member 30 sucks and holds a plurality of granules as described above, it is possible to satisfy the condition of removing excess granules.
[0045]
Further, in the present embodiment, the insertion part 61 having a predetermined diameter is provided in the selection part 60, but the present invention is not limited to this. For example, a diameter variable flat plate that changes the diameter is provided in the insertion part 61 of the selection part 60. You may do so. By providing the variable diameter flat plate in this way, the diameter of the insertion portion 61 can be easily set in accordance with the desired particle size of the granules, and the particle size of the supplied granules can be easily changed to an arbitrary range.
[0046]
Furthermore, although the sorting unit 60 of the present embodiment has the insertion portion 61 formed on a member having a certain degree of rigidity, an elastic member may be used. The elastic member is not particularly limited, and examples thereof include rubber, resin, and the like.
[0047]
When an elastic member is used for the selection portion, the insertion portion may be an insertion hole, but can also be formed by making a plurality of cuts centered on one point. When the selection portion is formed of an elastic member in this manner, the elastic portion is easily deformed, that is, by changing the number and shape of the cuts, the insertion portions having different diameters depending on the desired particle size of the granules. Can be manufactured at low cost. In addition, one selection unit may have a plurality of insertion units, or may be replaced.
[0048]
After the granules 101 having a particle size in a predetermined range are obtained in this way, the granules 101 are supplied to a predetermined position.
[0049]
First, in order to supply the granules 101 sucked and held by the distal end 32 of the pipe member 30 to a predetermined position, as shown in FIG. 4A, the holding unit 40 moves in the radial direction of the pipe member 30 to the predetermined position. I do.
[0050]
Next, as shown in FIG. 4B, the distal end 32 of the pipe member 30 moves to a predetermined position by moving the holding unit 40 in the axial direction of the pipe member 30.
[0051]
Thereafter, as shown in FIG. 4C, the suction operation by the suction device 50 is stopped and the evacuation operation is performed, whereby the granules 101 are detached from the distal end 32 of the pipe member 30, and the granules 101 are supplied to a predetermined position. be able to. Note that, in the present embodiment, the suction operation by the suction device 50 is stopped and the exhaust operation is performed so that the granules 101 are surely detached from the pipe member 30. However, if the granules 101 can be detached from the pipe member 30, Alternatively, only the suction operation may be stopped.
[0052]
In the supply of the granules 101, since the granules 101 are very small, the supply position of the granules 101 is not determined by the recoil of stopping the suction device 50 or the space between the granules 101 and the supply position, and it is difficult to supply the granules 101 to a predetermined position. is there. For this reason, in this embodiment, the guide member 70 having the tip 32 of the pipe member 30 and the granule supply hole 71 through which the granule 101 held by suction can be inserted is provided at the position where the granule 101 is supplied.
[0053]
In the present embodiment, for example, the guide member 70 descends to a predetermined position with the axial movement of the pipe member 30, and after the pipe member 30 detaches the granules 101 and the pipe member 30 rises, To rise. That is, the guide member 70 descends as the pipe member 30 moves in the axial direction, as shown in FIG. 4B, and the distal end of the pipe member 30 descends as shown in FIG. The granules 101 detached from 32 are held in the granule supply holes 71. Then, as shown in FIG. 4 (d), the granules 101 are positioned and supplied to a predetermined position by the guide member 70 rising with the rise of the pipe member 30.
[0054]
As described above, according to the granule supply device 10 of the present embodiment, granules having a particle size in a predetermined range can be easily and surely supplied one by one, and the granules are easily positioned at a predetermined position and supplied. can do.
[0055]
Further, in such a granule supply device 10, since granules having a particle size in a predetermined range can be supplied one by one to a predetermined position, for example, a granule physical property for measuring the physical properties of a granule as a raw material of a pharmaceutical preparation or the like. By providing it in the measuring device of the above, the labor of supply can be largely saved, the inspection time can be shortened, and the physical properties can be measured accurately.
[0056]
(Other embodiments)
As described above, the first embodiment of the present invention has been described, but the basic configuration of the granule supply device is not limited to the above-described example.
[0057]
For example, a vibrating device that vibrates the work tray 20 may be provided so that the granules 100 put into the work tray 20 are surely brought to the center of the work tray 20 and deposited. In this case, in particular, the conical portion 21 may not be provided on the bottom surface of the work tray 20, and even if the bottom surface of the work tray is flat, that is, the inner surface of the work tray is cylindrical, the granules can be formed by applying vibration to substantially the center of the bottom surface. 100 can be deposited near the center of the work tray.
[0058]
FIG. 5 shows such an example. FIG. 5 is a schematic plan view and an enlarged sectional view of a main part of a granule supply device according to another embodiment.
[0059]
As shown in the drawing, the work tray 20A has a cylindrical shape and has a flat bottom surface.
[0060]
The vibration device 80 that applies vibration to the work tray 20A by contacting the substantially center of the bottom surface of the work tray 20A is not particularly limited as long as it can apply vibration to the work tray 20A. Devices can be mentioned. In the present embodiment, the vibrating device 80 includes a vibrating section 81 that vibrates by contacting the outer periphery of the work tray 20A, and a drive motor 82 that drives the vibrating section 81.
[0061]
Vibration to the work tray 20A by such a vibration device 80 may be always applied, and may be applied at a desired timing such as when the granules 100 are supplied to the work tray 20A or each time the granules 100 are acquired. You may do so.
[0062]
When the vibrating device 80 is provided on the work tray 20 having the conical portion 21 on the bottom surface, the vibrating unit 81 of the vibrating device 80 can efficiently bring the granules 100 to the substantially center even if the vibrating unit 81 contacts any of the work trays 20. Can be deposited.
[0063]
【The invention's effect】
As described above, according to the present invention, a granule is supplied to a predetermined position by moving a pipe member for sucking and holding a granule at a distal end in an axial direction and a radial direction. Since the wiping portion for dropping is provided, the granules can be easily and surely supplied one by one to a predetermined position, and the particle size of the supplied granules can be selected within a predetermined range. Further, by providing the guide member at the supply position, the granules can be easily positioned and supplied to a predetermined position.
[Brief description of the drawings]
FIG. 1 is a schematic plan view and a main part enlarged cross-sectional view of a granule supply device according to Embodiment 1 of the present invention.
FIG. 2 is an enlarged sectional view of a main part showing a method for supplying granules according to Embodiment 1 of the present invention.
FIG. 3 is an enlarged sectional view of a main part showing a method for supplying granules according to Embodiment 1 of the present invention.
FIG. 4 is an enlarged sectional view of a main part showing a method for supplying granules according to Embodiment 1 of the present invention.
FIG. 5 is a schematic plan view and a main part enlarged cross-sectional view of a granule supply device according to another embodiment of the present embodiment.
[Explanation of symbols]
Reference Signs List 10 Granule supply device 20, 20A Work tray 30 Pipe member 31 Through hole 32 Tip 33 Small diameter tube portion 34 Base end portion 35 Large diameter tube portion 36 Joint unit 40 Holding unit 50 Suction unit 60 Sorting unit 70 Guide member 80 Vibration device 81 Vibration Part 82 drive motors 100, 101, 102, 103 granules

Claims (4)

顆粒が堆積するワークトレイと、所定の直径を有すると共に基端部が吸引装置に接続されて所定以上の直径の顆粒がその先端で吸引保持されるパイプ部材と、該パイプ部材を軸方向及び半径方向に移動自在に保持する保持部と、前記パイプ部材の先端部側に前記ワークトレイの上方に設けられて、且つ当該パイプ部材の先端部を挿通可能で且つ所望の直径の顆粒を挿通できると共に所望以上の直径の顆粒を前記パイプ部材の先端で吸引保持した状態で通過させることによりその開口縁部で払い落とすことができる直径を有する挿通孔からなる挿通部を有する選別部とを具備し、顆粒が先端に吸引保持された前記パイプ部材を前記保持部材が軸方向及び半径方向に移動することで所定位置に顆粒を供給することを特徴とする顆粒物供給装置。A work tray on which the granules are deposited, a pipe member having a predetermined diameter and a base end connected to a suction device, and holding the granules of a predetermined diameter or more at the distal end by suction; And a holding portion movably held in a direction, provided above the work tray on the tip end side of the pipe member , and capable of inserting the tip end portion of the pipe member and inserting granules having a desired diameter. ; and a sorting unit that have the insertion portion comprising a through hole having a diameter which can be brushed off at the opening edge by passing the granules of desired diameter or greater while sucking and holding the tip of the pipe member A granule supply device for supplying granules to a predetermined position by moving the holding member in the axial direction and the radial direction on the pipe member having the granules sucked and held at the tip thereof. 請求項1において、前記挿通部が、供給する顆粒の最小粒径の2倍以下の内径で且つ供給する顆粒の最大粒径よりも大きな内径を有することを特徴とする顆粒物供給装置。  2. The granule supply device according to claim 1, wherein the insertion portion has an inner diameter that is equal to or less than twice the minimum particle diameter of the supplied granules and is larger than the maximum particle diameter of the supplied granules. 請求項1又は2において、前記選別部が弾性変形可能な弾性部材からなり、前記挿通部が前記弾性部材に形成された複数の切り込みからなることを特徴とする顆粒物供給装置。3. The granule supply device according to claim 1, wherein the selection unit is formed of an elastic member that can be elastically deformed, and the insertion unit is formed of a plurality of cuts formed in the elastic member. 4. 請求項1〜3の何れかにおいて、顆粒を供給する所定位置には、前記パイプ部材の先端で保持された顆粒を挿通可能な内径の顆粒供給孔を有するガイド部材が設けられており、該ガイド部材の顆粒供給孔を介して顆粒を所定位置に供給することを特徴とする顆粒物供給装置。The guide member according to any one of claims 1 to 3, wherein a guide member having a granule supply hole having an inner diameter through which the granule held at the tip of the pipe member can be inserted is provided at a predetermined position for supplying the granule. A granule supply device for supplying granules to a predetermined position through a granule supply hole of a member.
JP2001174658A 2001-06-08 2001-06-08 Granule supply device Expired - Fee Related JP3590363B2 (en)

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JP3590363B2 true JP3590363B2 (en) 2004-11-17

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JP4520359B2 (en) * 2005-05-13 2010-08-04 日立ソフトウエアエンジニアリング株式会社 Particle capturing device, particle arranging method and particle arranging device

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