JP3673014B2 - Filling equipment - Google Patents

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Publication number
JP3673014B2
JP3673014B2 JP08864796A JP8864796A JP3673014B2 JP 3673014 B2 JP3673014 B2 JP 3673014B2 JP 08864796 A JP08864796 A JP 08864796A JP 8864796 A JP8864796 A JP 8864796A JP 3673014 B2 JP3673014 B2 JP 3673014B2
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filling
bag body
mouth
pressing
bag
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JPH09278003A (en
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雅弘 丹後
智裕 梅村
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Fujimori Kogyo Co Ltd
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Fujimori Kogyo Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、樹脂製の袋体に液体を充填する充填装置に関する。
【0002】
【従来の技術】
従来液体は、内部に充填用の空間部を有する基本的には形状不変の容器に充填されて運搬等の取扱いがなされているのが通例となっている。
しかしながら、上記容器では、空の状態においても形状すなわち大きさが変らないため、回収する際の運搬効率あるいは回収するまでの保管効率が非常に悪いという問題があった。このような観点から、最近では、比較的強度が確保できる形状可変の樹脂製袋体に液体を充填し、これをダンボール箱に入れて運搬等の取扱いを行う方式が採用されつつある。すなわち、この方式では、空の状態の袋体は大きさを液体が充填された状態より遥かに小さくでき、またダンボールは容易に折り畳むことができるため、回収する際の運搬効率あるいは回収するまでの保管効率を大幅に向上することができる。
【0003】
【発明が解決しようとする課題】
ところで、上記のような樹脂製の袋体に液体を充填する場合に用いられる充填装置として、内外を連通させる口部をそれぞれが有するとともに多数が連結されて帯状をなす樹脂製の袋体を口部を上に向けた状態で連結方向に沿って送る送り手段と、該送り手段で送られる袋体の口部を順次一定位置に位置決めする位置決め手段と、該位置決め手段で位置決めされた口部から袋体内に液体を充填し口部を閉塞させる充填手段と、該充填手段で液体が充填されたのちの袋体を搬送する搬送手段と、位置決め手段で上流側の袋体の口部が位置決めされることにより一定する、搬送手段上の、液体が充填された袋体と該袋体の上流側に隣り合う袋体との間位置に、上方からカッタを通過させて切断を行う切断手段とを有するものを考えた。
しかしながら、上記のように、位置決め手段で上流側の袋体の口部が位置決めされることにより一定する袋体間位置にカッタを通過させて切断を行う場合、カッタの通過時の逃げを搬送手段に設ける関係上、大きさが異なる多種の袋体に対応させることが困難であるという問題があった。
したがって、本発明の目的は、大きさが異なる多種の袋体に容易に対応することができる充填装置を提供することである。
【0004】
【課題を解決するための手段】
上記目的を達するため、本発明の充填装置は、内外を連通させる口部をそれぞれが有するとともに多数が連結されて帯状をなす樹脂製の袋体を、口部を上に向けた状態で連結方向に沿って送る送り手段と、該送り手段で送られる袋体の口部を順次一定位置に位置決めする位置決め手段と、該位置決め手段で位置決めされた口部から袋体内に液体を充填し口部を閉塞させる充填手段と、該充填手段で液体が充填されたのちの袋体を搬送する搬送手段と、前記位置決め手段で上流側の袋体の口部が位置決めされることにより一定する、前記搬送手段上の、液体が充填された袋体と該袋体の上流側に隣り合う袋体との間位置に、上方からカッタを通過させて切断を行う切断手段とを有し、前記搬送手段に、多数の回転駆動可能なローラが前記カッタの通過を許容できる間隔をあけて平行に配置されたローラコンベアを用いると共に、前記切断手段が前記ローラ間の隙間に上方からカッタを通過させて前記液体が充填された袋体と上流側に隣り合う袋体との間を切断することを特徴としている。
【0005】
【発明の実施の形態】
本発明の一の実施の形態による充填装置を図面を参照して以下に説明する。
まず、液体が充填される袋体1は、図1に示すように、矩形形状をなす二枚の樹脂製のシートが重ね合わせられてすべての端縁部が閉塞された形状をほぼなしており、多数が帯状をなすよう直列に連なった状態で連結方向に沿って充填装置に連続的に供給されるようになっている。
【0006】
各袋体1には、上面1aに、一の隣り合う袋体1側に偏った位置に内外を連通させる口部2が設けられており、この口部2は、略円筒状をなし、その外側の先端外周部にオネジ3が形成され、基端外周部に一段凹んだ環状のガイド溝4が形成され、これらの間に円筒状の中間部5が形成された形状をなしている。なお、図1において、符号1bは下面、符号1cは隣り合う袋体1,1間の境界部分であるシール部を示しており、シール部1cは袋体1,1,…の連結方向に直交する方向(図1における紙面に垂直をなす方向)に延在している。
【0007】
図2〜図4等に示す充填装置11は、上記袋体1が、帯状に連なったまましかも各袋体1の口部2が上側かつ下流側に位置する状態で、連結方向を供給方向に沿わせて供給されるようになっており、相互に所定の間隔をあけて同じ高さに設けられ相互の対向面側を口部2のガイド溝4に入り込ませることにより相互間に口部2を支持した状態で該口部2の移動を案内する一対のガイド板12,12と、ガイド板12,12に支持された口部2を押圧移動させることにより連なった状態の袋体1,1,…を連結方向に沿う一方向に送る送り部(送り手段)13と、該送り部13で送られることにより新たにガイド板12,12間に向け移動する袋体1の口部2をそのガイド溝4にガイド板12を入り込ませるよう案内する案内部14とを有し、また、送り部13で順次送られる口部2を上に向けた状態で一定位置に位置決めすよう把持する把持部(位置決め手段)16と、該把持部16で把持された口部2から袋体1に液体を充填して口部2をキャップ6(図7等参照)で閉塞させる充填部(充填手段)17と、液体が充填されかつ口部2が閉塞されて連なった状態で送られる袋体1,1,…を個々の袋体1に分割する切断部(切断手段)18と、連なった状態で液体が充填された袋体1,1,…および分割された袋体1を搬送する搬送部(搬送手段)19と、該搬送部19で搬送された袋体1を上部開口状態のダンボール7に受け入れさせるダンボールセット部20と、前記搬送部19で搬送され落下された袋体1のダンボール7への落下を案内する落し込みホッパ22と、送り部13、把持部16、充填部17、切断部18、搬送部19およびダンボールセット部20等の作動を制御する制御部(制御手段)23とを有している。
【0008】
送り部13は、ガイド板12,12間の隙間に対し一の側方位置にその延在方向に沿って移動自在に設けられた送り体25と、該送り体25を前記方向に沿って往復移動させるエアシリンダ等の送り駆動部26とを有する第1送り部27と、ガイド板12,12間の隙間に対し他の側方位置にその延在方向に沿って移動自在に設けられた送り体29と、該送り体29を前記方向に沿って往復移動させるエアシリンダ等の送り駆動部29とを有する第2送り部30とを有している。
【0009】
第1送り部27の送り体25には、ガイド板12,12に支持された口部2側に突出する位置と該口部2から逃げる位置との間で図示せぬ駆動部の駆動で揺動する揺動部材31が設けられており、送り体25を送り方向上流側に位置させた状態で口部2の送り方向上流側で揺動部材31を口部2側に突出させ、この状態で送り体25を送り方向下流側に送り駆動部26で移動させると、揺動部材31が口部2すなわち連なった状態の袋体1,1,…を送り方向下流側に押圧移動させる。また、この状態から揺動部材31を口部2から逃げる方向に揺動させて他の口部2との干渉を回避させつつ、送り駆動部26で送り体25を送り方向上流側に移動させ、次の送りに備える。
【0010】
第2送り部30の送り体28にも、ガイド板12,12に支持された口部2側に突出する位置と該口部2から逃げる位置との間で図示せぬ駆動部の駆動で揺動する揺動部材32が設けられており、送り体28を送り方向上流側に位置させた状態で口部2の送り方向上流側で揺動部材32を口部2側に突出させ、この状態で送り体28を送り方向下流側に送り駆動部29で移動させると、揺動部材32が口部2すなわち連なった状態の袋体1,1,…を送り方向下流側に押圧移動させる。また、この状態から揺動部材32を口部2から逃げる方向に揺動させて他の口部2との干渉を回避させつつ、送り駆動部29で送り体28を送り方向上流側に移動させ、次の送りに備える。
これら第1送り部27および第2送り部29は、それぞれの送り体25,28をほぼ同時に同方向に作動させて異なる口部1,1をそれぞれ同じタイミングで押圧移動させて送り力を高めるようになっている。
なお、以下の説明においては、送り部13による袋体1の送り方向(図2における右から左へ向く水平方向を、単に送り方向と称す。
【0011】
把持部16は、ガイド板12,12から受け渡された口部2を把持し水平鉛直両方向の位置決めを行うもので、送り方向における上記送り部13の下流側に設けられており、図5および図6に示すように、第2送り部30で送られた口部2に対し下流側から延出して該口部2を水平方向における両側から把持して位置決めを行う一対の大爪部35,35と、各大爪部35,35上に設けられてこれら大爪部35,35とともに口部2を水平方向における両側から把持して位置決めを行う一対の小爪部36,36とを有している。
【0012】
各大爪部35,35は、基端側が鉛直軸線回りに回動自在に設けられており、それぞれに前記軸線に一致して歯車37,37が固定されていて、これら歯車37,37が噛み合わされている。そして、これらの一方の歯車37をエアシリンダ等の駆動部34(図3参照)で正逆両方向に所定角度回転させることで先端側が開閉する。また、各小爪部36,36は、大爪部35,35に設けられた支持軸38,38により揺動自在に支持されておりそれぞれがエアシリンダ等の駆動部39,39で駆動されて開閉する。
【0013】
充填部17は、図2〜図4に示すように、送り方向における上記送り部13の下流側に設けられており、把持部16で把持され位置決めされた口部2に液体を充填する充填本体部41と、把持部16で把持され位置決めされた口部2にキャップ6を螺合させる閉塞部42と、これら充填本体部41および閉塞部42の位置を切り換える移動部43と、該閉塞部42にキャップ6を供給するキャップ供給部44とを有している。
【0014】
キャップ供給部44は、キャップ6を多数ストックするとともに一つずつ供給するパーツフィーダ46と、該パーツフィーダ46により繰り出されたキャップ6を閉塞部42により受け取り可能な位置に送り出す送出部47とで構成されている。
【0015】
パーツフィーダ46は、図7に示すように、先端側が下方に位置するよう傾斜するシュート48と、該シュート48の先端に該シュート48内に突出自在に設けられた二つのストッパ49,50と、これらストッパ49,50をそれぞれ往復移動させるソレノイド等の突出駆動部51,52とを有している。
これら突出駆動部51,52は、シュート48の先端側に位置するストッパ49を突出させかつ他側のストッパ50を引き込むことで一つのキャップ6を先端側のストッパ49に当接させ、この状態で他側のストッパ50を突出させて、前記キャップ6の次のキャップ6の移動を規制し、さらに、先端側のストッパ49を引き込むことで前記一つのキャップ6のみを、傾斜でシュート48から繰り出させる。このようにして、キャップ6を一つずつシュート48から繰り出させる。
【0016】
送出部47は、図8に示すようにシュート48の先端から繰り出されたキャップ6を受け入れて載置させる載置台53と、該載置台53に繰り出されたキャップ6を載置台53の先端所定位置に送り出すよう移動自在に設けられた送出体54と、この送出体54を往復移動させるエアシリンダ等の送出駆動部55とを有している。
【0017】
移動部43は、図9および図10に示すように、送り方向に直交する水平方向(図9における左右方向)に沿って移動自在に設けられた移動体57と、該移動体57を往復移動させるエアシリンダ等の移動駆動部58とを有している。
【0018】
この移動体43に水平方向に並列して、充填本体部41の一部および閉塞部42が設けられている。
そのうち、充填本体部41は、移動体43に鉛直方向に沿って移動自在に設けられた充填ノズル60と、該充填ノズル60を往復移動させるエアシリンダ等の昇降駆動部61と、充填ノズル60に液体を供給して該充填ノズル60の下部開口部60aから所定の圧力で吐出させる図示せぬ液体供給部とで構成されている。
【0019】
また、閉塞部42は、移動体57に鉛直方向に沿って移動自在に設けられた螺合部64と、該螺合部64を往復移動させるエアシリンダ等の昇降駆動部65とで構成されている。螺合部64は下端に回転自在に設けられた、キャップ6を保持可能な螺合体66と、該螺合体66を回転させる図示せぬモータ等の駆動部とを有している。
【0020】
ここで、移動体57は、充填ノズル60の水平方向位置を、把持部16で把持され位置決めされた口部2上に合わせ、かつ、螺合部64の水平方向位置を、載置台53上に送出部47で送り出されたキャップ6上に合わせる充填位置と、螺合部64の水平方向位置を口部2上に合わせる螺合位置との間で移動するようになっており、充填位置において充填ノズル60を下降させると該充填ノズル60が口部2を外気に対し閉塞させるとともにその下部開口部60aが口部2内に位置されて液体の充填が可能となり、充填位置において充填ノズル60を下降させると該充填ノズル60の下部開口部60aが口部2内に位置されて液体の充填が可能となり、またこの状態で螺合部64を下降させると載置台53上のキャップ6を螺合体66に嵌合保持させることになって、さらに、螺合位置において、螺合部64を下降させ螺合体66を回転させることで、キャップ6を口部2のオネジ3に螺合させることになる。ここで、充填位置と螺合位置との間の移動時には、充填ノズル60および螺合部64は上昇させられる。
【0021】
把持部16の下側には、図11に示すように、把持部16に把持された状態の口部2の下側に位置する上下動自在な押圧体68を有するエアシリンダ等の第1押圧部(第一の押圧手段)69が設けられている。この第1押圧部69は、押圧体68を上昇させることにより、該押圧体68によって、口部2が把持部16に把持された状態の袋体1を下側から支持しその下面1b(図1参照)を把持部16で把持された口部2の内側すなわち下側の縁部に当接させる。なお、押圧体68の袋体1を支持する上面の面積は、支持される袋体1の面積より小さくされ、袋体1の内側位置を支持するようになっている。
この第1押圧部69は、導入されるエア圧を制御することにより押圧体68の上方向への圧力すなわち押圧体68による袋体1の押圧力を制御可能とされている。
【0022】
搬送部19は、図2等に示すように、充填部17等の下側位置であってガイド板12,12と所定距離離間した位置に、袋体1の送り方向に沿って水平に延在された第1ローラコンベア71と、該ローラコンベア71に連続しかつ該ローラコンベア71に対し反対側が下方に位置するよう傾斜された第2ローラコンベア72と、第2ローラコンベア72の搬送方向に直交して水平配置された全ローラ72aを回転駆動する図示せぬ駆動部とを有している。なお、把持された状態の口部2の中心軸線上に、第1ローラコンベア71および第2ローラコンベア72は、その搬送方向に直交する幅方向の中心位置を一致させている。また、第2ローラコンベア72の送り方向における位置は、その上流側の端部が、把持部16で口部2が把持されている袋体1の下流側の端縁部より上流側であってかつ口部2より下流側に位置するよう設定されている。
図13〜図16に示すように、第2のローラコンベア72の途中上方であって、把持部16の下流側の側方位置に、上下動自在な押圧体(第二の押圧体)100を有するエアシリンダ等の第2押圧部(第二の押圧手段)101が設けられている。この第2押圧部101は、押圧体100を下降させることにより、該押圧体100によって、口部2が把持部16に把持された状態の袋体1の口部2以外の一部を上側から押圧する。この第2押圧部101は、導入されるエア圧を制御することにより押圧体100の下方向への圧力すなわち押圧体100による袋体1の押圧力を制御可能とされている。
また、第2押圧部101の下側には、上記押圧体100と水平方向における位置を合わせて上下動自在な押圧体(第三の押圧体)103を有するエアシリンダ等の第3押圧部(第三の押圧手段)104が設けられている。この第3押圧部104は、押圧体103を第2ローラコンベア72のローラ72a,72a間の隙間から突出させて上昇させることにより、該押圧体103によって、口部2が把持部16に把持された状態の袋体1の一部を下側から押圧することになり、このとき第2押圧部101が押圧体100を下降させると、該押圧体100との間に前記袋体1の一部を挾持する。この第3押圧部104は、導入されるエア圧を制御することにより押圧体103の上方向への圧力すなわち押圧体103による袋体1の押圧力を制御可能とされている。
【0023】
切断部18は、上記第2ローラコンベア72の途中上方であって、第2押圧部101および第3押圧部104より下流側に設けられており、該第2ローラコンベア72の搬送方向に直交する仮想平面内に配置され該仮想平面内で上下動可能に設けられるとともに下端に切れ刃が形成されたカッタ74と、該カッタ74を上下に往復動させるエアシリンダ等の駆動部75とを有しており、該切断部18は、前記搬送方向に沿ってその位置が変更可能となっている。そして、把持部16で口部2が把持されることにより一定することになる、該把持された状態の上流側の袋体1と、これに連なる一つ下流側の既に液体が充填され口部2が閉塞された袋体1との間の境界部分である、送り方向に直交して延在するシール部1c(図1参照)の中央に、カッタ74の延長線すなわち上記仮想平面が位置するように袋体1の大きさに応じて位置決めされる。
ここで、カッタ74は、切断時に上方から第2ローラコンベア72の各ローラ72a,72a間の隙間を通過してまた上方に戻ることになり、このため各ローラ72a,72aのピッチは、取り扱う袋体1のすべての大きさに対応して位置調整がなされたカッタ74の通過を許容できるピッチに設定されている。
【0024】
第2ローラコンベア72の搬送方向における末端部の下方に、落し込みホッパ22が鉛直方向に沿って設けられている。この落し込みホッパ22は、図12に示すように、上記送り方向に沿う水平方向(図12(c)に示す左右方向)の内幅が一定となるよう該方向に直交して延在する側面部83,84と、該送り方向に直交する水平方向における下側の内幅が前記側面部83,84間の内幅と略同じとなるよう送り方向に沿って鉛直延在する側面部85,86と、該送り方向に直交する水平方向における上側の内幅が前記側面部85,86間の内幅より大となるよう送り方向に沿って鉛直延在する側面部87,88と、側面部85,87を連結させあるいは側面部86,88を連結させるよう鏡面対称状に傾斜された傾斜面部89,90とを有する筒状をなしており、正方形状の下部開口部22aは、例えば液体が充填された袋体1の大きさより一回り大きくされている。
そして、この落し込みホッパ22は、送り方向に沿う水平方向の内幅の中心位置すなわち側面部83,84間の中心位置を、搬送部19の末端部の位置の鉛直下方に配置し、かつ送り方向に直交する水平方向の内幅の中心位置すなわち例えば側面部85,86間の中心位置を、搬送部19の同方向の中心位置の鉛直下方に配置した状態で取り付けられている。
【0025】
ダンボールセット部20は、落し込みホッパ22の下側に、直方体状のダンボール7を上部開放状態でその一対の側面部7a,7bを前記送り方向に直交する方向に延在させて載置させる載置台77と、該載置台77を昇降させる昇降駆動部78とを有しており、載置台77上には、ダンボール7の水平方向の位置決めを行う位置決め部材79が設けられている。この位置決め部材79は、前記送り方向(図2に示す左右方向)における側面部7a,7b間の内幅の中心位置を、第2ローラコンベア72の末端部の位置の鉛直下方に配置する位置にダンボール7を位置決めする。なお、ダンボール7の前記送り方向に沿う側面部間の内幅の中心位置は、例えば作業者が目視により第2ローラコンベア72の同方向の中心位置の鉛直下方に配置する。
【0026】
制御部23は、上記した各駆動部の駆動・停止および必要に応じて駆動の方向あるいは速度を制御するとともに、図示せぬ液体供給部による充填ノズル60を介しての液体の充填・停止、および第1押圧部69へ導入されるエア圧を制御するようになっている。
そして、この実施の形態において、制御部23は、充填部17による液体の充填前に、第1押圧部69によりその押圧体68を上昇させ該押圧体68によって、口部2が把持部16に把持された状態の袋体1を下側から支持しその下面1bを把持部16で把持された口部2の下側の縁部に当接させるようになっており、その際には押圧体68による袋体1の支持圧を高圧とする。また前記充填部17による液体の充填時には、充填開始とタイミングを合わせて、第1押圧部の押圧体68による袋体1の支持圧を充填部17による液体の予め定められた一定の充填圧に対し所定量低くなるよう低圧に制御するようになっている。
なお、図2に符号81で示すものは、第2ローラコンベア72を、下流側が下方に位置するよう傾斜させたことに対応して充填装置全体を高くするための脚部である。
【0027】
次に、上記制御部23で制御される充填装置11の作動について説明する。
まず、連なった状態の袋体1の一端の一つを引き、充填装置11の案内部14側からガイド板12,12間にその口部2を支持させ、さらに該一端のものの口部2を、第2送り部30の下流側に位置させる。このとき、前記袋体1に連なる袋体1の口部2も案内部14により順次ガイド板12,12間に支持される。
【0028】
そして、作業者が操作して充填作業を開始させる。すると、制御部23は、図13に示すように、第1押圧部69を押圧体68が下降したOFF状態とさせ、第2押圧部101を押圧体100が上昇したOFF状態とさせて、第3押圧部104を押圧体103が下降したOFF状態とさせ、これらを袋体1の移動に干渉せぬ状態に退避させた状態を維持しつつ、上流側に位置し待機していた送り部13の第1送り部27および第2送り部30の送り体25,28をほぼ同時に下流側に移動させる。これによりそれぞれの送り体25,28の揺動部材31,32が別々の口部2,2を下流側に押圧移動させることになり、特に第2送り部30が移動させる口部2は、開状態で待機している把持部16の大爪部35,35間に位置する。続いて、制御部23は、把持部16の大爪部35,35を閉作動させるとともに、小爪部36,36も閉作動させる。これにより、前記口部2が大爪部35,35および小爪部36,36で把持されて位置決めがなされる。
【0029】
続いて、制御部23は、図14に示すように、第1押圧部69にエアを導入ししかも作動圧を高圧としてその押圧体68を上昇させてON状態とし、該押圧体68によって、口部2が把持部16に把持された状態の袋体1を下側から支持しその一部である下面1bを把持部16で把持された口部2に近接させたのちその下側の縁部に当接させる。これとほぼ同時に、第2押圧部101にエアを導入ししかも作動圧を高圧としてその押圧体100を下降させてON状態とするとともに、第3押圧部104にエアを導入ししかも作動圧を高圧としてその押圧体103を上昇させてON状態として、これら押圧体100,103で、口部2が把持部16に把持された状態の袋体1の一部を口部2より若干低い位置で上下両側から挾持させる。これにより、口部2が把持部16に把持された状態の袋体1の内部にある空気を外部に排出させ、空気量を減らす。なお、押圧体100,103が袋体1を挾持するタイミングに若干遅れて押圧体68で袋体1を口部2に当接させる。
一方、キャップ供給部44のパーツフィーダ46の先端側のストッパ49を開作動させてキャップ6を一つ載置台に繰り出させ、該キャップ6を送出部47の送出体54で前進させて所定位置に位置させる。
【0030】
この状態で、制御部23は、前記把持部16の上方で待機していた充填ノズル60を下降させて口部2を外気に対し閉塞させるとともにその下部開口部60aを口部2内に進入させ、その後、図示せぬ液体供給部から液体を吐出させると同時に、第3押圧部104のエア圧を抜いてOFF状態とすることで押圧体103を袋体1と無関係な第2ローラコンベア72下の位置まで下降させるとともに、第2押圧部101はON状態のままエア圧を低圧にして、液体の予め定めれた一定の充填圧より若干低い作動圧すなわち押圧体100が袋体1に及ぼす押圧力が得られるよう制御するとともに、第1押圧部69もON状態のままエア圧を低圧にして、液体の予め定めれた一定の充填圧より若干低い作動圧すなわち押圧体68が袋体1に及ぼす押圧力が得られるよう制御する。
【0031】
第1押圧部69の上記作動により、図15に示すように、充填ノズル60から吐出された充填圧で押圧体68が若干下降して液体が袋体1内に充填されることになり、しかも、その後の液体の充填量の増大にともなう袋体1の重量増に追従して押圧体68の下降量が大きくなるため、充填初期において、押圧体68は袋体1の水平方向における内側に入ってこれを上側に支持し、よって、充填された液体は押圧体68による支持がない袋体1の端縁部付近に先に入り込むことになる。さらに、第2ローラコンベア72の傾斜によって袋体1は口部2から最も離れた端縁部側が最も下方に位置されることになるため、この部分に最も先に液体が入り込むことになる。
加えて、第2押圧部101の上記作動により、液体の充填中等は、袋体1の上側部分を口部2より下側に位置させた状態を維持している。
【0032】
制御部23は、上記充填ノズル60の下降と同時に閉塞部42の螺合部64を下降させ、送出部47で送り出されているキャップ6をその螺合体66に嵌合させた後、上昇させる。
そして、図示せぬ液体供給部から予め定められた所定量の液体が充填ノズル60を介して吐出され終わると、制御部23は、該液体供給部による液体の吐出を停止させて、充填ノズル60を上昇させ、移動部43の移動体57を移動させて螺合部64を把持部16で把持された口部2の直上に位置させ、螺合部64を下降させつつその螺合体66を回転させ、口部2のオネジ3にキャップ6を螺合させた後に螺合部64を上昇させ、移動体57を元の位置に移動させる。
一方、図16に示すように、キャップ6の口部2への螺合完了時点すなわち袋体1の密閉時点まで、第1押圧部69および第2押圧部101は上記した低圧でのON状態を維持しており、螺合完了後にエアが抜かれてOFF状態とされる。そして、把持部16を開作動させ口部2の把持を解除させて一の充填作業を完了する。
【0033】
制御部23は、上記充填作業を繰り返し行って、連なる袋体1に順次液体を導入しその口部2を閉塞させるとともに、これを、駆動状態にある第2ローラコンベア72の搬送力で、送り部13による未充填の袋体1の送りに伴って下流側に送る。
そして、制御部23は、一の袋体1が把持部16で把持された状態において、切断部18のカッタ74を下降させ、連なった状態の袋体1の最も下流側のものを他のものから切り離すとともに、この切断された袋体1を、駆動状態にある搬送部19の第2ローラコンベア72により所定の速度で搬送させる。すると、第2ローラコンベア72で搬送される袋体1は、その末端部より、口部2に対し最も離れた端縁部側から落下し、落し込みホッパ22で案内されて、ダンボールセット部20の位置決め部材79で位置決めされたダンボール7内に落下される。
【0034】
以上に述べたこの実施の形態の充填装置11によれば、以下の効果を奏することができる。
充填部17による液体の充填前に、第1押圧部69の押圧体68で袋体1を下側から押圧してその下側の一部を把持部16で位置決めされた口部2に近接させるとともに、その側方に設けられた第2押圧部101の押圧体100と、第3押圧部104の押圧体103との間に袋体1の一部を挾持することで、袋体1内の空気量を減らすことができる。
したがって、充填部17による液体の充填時における袋体1内の空気の残存量を少なくできるため、液体の溢れ出し等の充填不良を防止できる。このため、大容量化に良好に対応することができる。
また、充填部17の充填本体部41による液体の充填時に、第1押圧部69の押圧体68による袋体1の押圧力を、充填本体部41による液体の充填圧に対し若干の所定値低くすることで、充填開始時においてはほぼ充填圧のみが押圧体68に作用して、口部2の内側と押圧体68により支持された袋体1の一部である下面1bとの隙間が最小限とされ、充填量が増大するにつれ充填圧に加えて充填された液体による重量が押圧体68に作用して、結果として、液体の充填量の増大に追従して押圧体68が下降することになる。よって、充填初期において、押圧体68は袋体1の水平方向における内側に入ってこれを支持するため、充填された液体は押圧体68による支持がない袋体1の端縁部付近を下方に位置させつつ該端縁部付近に先に入り込むことになる。したがって、空気が残留しやすい端縁部における空気の残留を防止することができるため、上記効果がより高まる。
【0035】
充填時において、押圧体68は袋体1の水平方向における内側に入ってこれを支持するため、充填された液体は押圧体68による支持がない袋体1の端縁部付近を下方に位置させつつ該端縁部付近に先に入り込むことになる。したがって、空気が残留しやすい端縁部における空気の残留を防止することができるため、上記効果がさらに高まる。加えて、第2ローラコンベア72の送り方向における位置は、その上流側の端部が、把持部16で口部2が把持されている袋体1の下流側の端縁部より上流側であって口部2より下流側に位置するよう設定されているため、第2ローラコンベア72の傾斜によって袋体1は口部2から最も離れた端縁部側が下方に位置されることになり、よって、この部分に最も先に液体が入り込むことになる。したがって、最も空気が残留しやすい口部2から最も離れた位置にある端縁部における空気の残留を防止することができるため、上記効果がより高まる。
加えて、第2押圧部101がキャップ6の口部2への螺合完了時点まで、低圧でのON状態を維持しているため、袋体1の上側部分を口部2より下側に位置させた状態を維持することになり、充填ノズル60の充填後の離間からキャップ6の螺合完了までの間に口部2が外気に対し開放されることになるにもかかわらず、袋体1の張り等によりその内部に空気が入り込んでしまうことを防止することができる。したがって、上記効果がより高まる。
【0036】
搬送部19の末端部である第2ローラコンベア72の末端部の鉛直下方に、落し込みホッパ22の搬送部19の送り方向における中心位置が配置されているため、袋体1を該落し込みホッパ22で引っ掛けたり裏返えしたりすることなく、口部2を上側かつ送り方向における上流側に位置させた一定の姿勢でダンボール7に良好に収容させることができる。しかも、第2ローラコンベア72を下流側が下方に位置するよう傾斜させることにより切断された袋体1が自由落下で搬送されることを避け、第2ローラコンベア72を駆動力で袋体1を送るものとしたため、第2ローラコンベア72の末端部から落下される袋体1の落下時の速度が一定することになり、よって、さらに確実に、袋体1を落し込みホッパ22で引っ掛けたり裏返えしたりすることなく、一定の姿勢でダンボール7に収容させることができる。
【0037】
切断部18による袋体1,1間の切断がその上で行われることになる搬送装置として、ローラコンベア72を採用しているため、ローラ72a,72aの隙間位置が多数有り、よって、この多数の隙間を切断部18のカッタ74の通過時の逃げとして用いることで、該切断部18の、袋体1の大きさに応じた位置変更を容易に行うことができる。したがって、大きさが異なる多種の袋体1に容易に対応することができる。
【0038】
【発明の効果】
以上詳述したように、本発明の充填装置によれば、切断手段による袋体間の切断がその上で行われることになる搬送手段として、ローラ同士の隙間位置が多数有るローラコンベアを採用することにより、この多数の隙間を切断手段のカッタの通過時の逃げとして用いることで、袋体の大きさに応じた切断手段の位置変更を容易に行うことができる。
したがって、大きさが異なる多種の袋体に容易に対応することができる。
【図面の簡単な説明】
【図1】本発明の一の実施の形態による充填装置に使用される袋体の断面図である。
【図2】本発明の一の実施の形態による充填装置を示す正面図である。
【図3】本発明の一の実施の形態による充填装置を示す平面図である
【図4】本発明の一の実施の形態による充填装置を図2に示すA方向から見た矢視図である。
【図5】本発明の一の実施の形態による充填装置の把持部を示す平面図である。
【図6】本発明の一の実施の形態による充填装置の把持部を図5に示すB方向から見た矢視図である。
【図7】本発明の一の実施の形態による充填装置のパーツフィーダの一部を示すもので(a)は側面図、(b)は(a)に示すC方向から見た矢視図である。
【図8】本発明の一の実施の形態による充填装置の送出部を示すもので(a)は平面図、(b)は(a)に示すD方向から見た矢視図である。
【図9】本発明の一の実施の形態による充填装置の充填部の一部を示す正面図である。
【図10】本発明の一の実施の形態による充填装置の充填部の一部を図9に示すE方向から見た矢視図である。
【図11】本発明の一の実施の形態による充填装置の第1押圧部等を示す正面図である。
【図12】本発明の一の実施の形態による充填装置の落し込みホッパを示すもので、(a)は正面図、(b)は下面図、(c)は(a)に示すF方向から見た矢視図である。
【図13】本発明の一の実施の形態による充填装置の充填部等の一状態を示す正面図である。
【図14】本発明の一の実施の形態による充填装置の充填部等の別の状態を示す正面図である。
【図15】本発明の一の実施の形態による充填装置の充填部等のさらに別の状態を示す正面図である。
【図16】本発明の一の実施の形態による充填装置の充填部等のさらに別の状態を示す正面図である。
【符号の説明】
1 袋体
2 口部
11 充填装置
13 送り部(送り手段)
16 把持部(位置決め手段)
17 充填部(充填手段)
18 切断部(切断手段)
19 搬送部(搬送手段)
72a,72a ローラ
74 カッタ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filling device for filling a resin bag with a liquid.
[0002]
[Prior art]
Conventionally, liquids are usually filled in a basically invariable container having a space for filling inside, and are handled for transportation and the like.
However, since the shape or size of the container does not change even in an empty state, there is a problem that the transportation efficiency when collecting or the storage efficiency until collecting is very poor. From such a point of view, recently, a method of filling a liquid in a shape-variable resin bag body that can ensure a relatively strong strength and placing it in a cardboard box for handling such as transportation is being adopted. In other words, in this method, the empty bag body can be much smaller in size than the liquid-filled state, and the cardboard can be easily folded, so that the efficiency of collection or the time until collection can be improved. Storage efficiency can be greatly improved.
[0003]
[Problems to be solved by the invention]
By the way, as a filling device used when filling a resin bag body as described above, a resin bag body that has a plurality of mouth portions each connected to the inside and the outside and is connected to form a belt-like shape. A feeding means that feeds along the connecting direction with the portion facing upward, a positioning means that sequentially positions the mouth of the bag body fed by the feeding means at a fixed position, and a mouth that is positioned by the positioning means The filling means for filling the bag body with the liquid and closing the mouth portion, the transport means for transporting the bag body after the liquid is filled with the filling means, and the positioning means position the mouth portion of the upstream bag body. Cutting means for cutting by passing the cutter from above at a position between the bag body filled with the liquid and the bag body adjacent to the upstream side of the bag body, which is fixed on the conveying means. I thought of what I had.
However, as described above, when cutting is performed by passing the cutter to a fixed position between the bag bodies by positioning the mouth portion of the upstream bag body by the positioning means, the escape means when the cutter passes is transported. There is a problem that it is difficult to cope with various types of bags having different sizes.
Accordingly, an object of the present invention is to provide a filling device that can easily cope with various types of bags having different sizes.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the filling device of the present invention has a mouth portion that communicates the inside and the outside, and a plurality of joined plastic bag bodies that are connected in a strip shape, with the mouth portion facing upward. A feeding means for feeding the bag body, positioning means for sequentially positioning the mouth portion of the bag body sent by the feeding means at a fixed position, filling the liquid into the bag body from the mouth portion positioned by the positioning means, and opening the mouth portion Filling means for closing, transporting means for transporting the bag body after being filled with liquid by the filling means, and the transporting means fixed by positioning the mouth of the upstream bag body by the positioning means. On the upper part, at a position between the bag body filled with the liquid and the bag body adjacent to the upstream side of the bag body, it has a cutting means for cutting by passing the cutter from above, and the conveying means, numerous rotary drivable roller the cutter Rutotomoni using roller conveyor arranged in parallel at intervals which can permit the passage, said cutting means next to the gap bag in which the liquid is filled by passing the cutter from above and upstream between the rollers It is characterized by cutting between the matching bags .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
A filling apparatus according to an embodiment of the present invention will be described below with reference to the drawings.
First, as shown in FIG. 1, the bag 1 filled with a liquid has a shape in which two resin sheets having a rectangular shape are overlapped to close all edges. A large number are continuously supplied to the filling device along the connecting direction in a state of being connected in series so as to form a strip shape.
[0006]
Each bag body 1 is provided with a mouth portion 2 that communicates the inside and outside of the upper surface 1a at a position biased toward one adjacent bag body 1, and the mouth portion 2 has a substantially cylindrical shape. A male screw 3 is formed on the outer peripheral portion of the outer tip, an annular guide groove 4 is formed in the base peripheral portion, and a cylindrical intermediate portion 5 is formed therebetween. In FIG. 1, reference numeral 1 b denotes a lower surface, reference numeral 1 c denotes a seal portion that is a boundary portion between adjacent bag bodies 1, 1, and the seal portion 1 c is orthogonal to the connecting direction of the bag bodies 1, 1. Extending in a direction (perpendicular to the paper surface in FIG. 1).
[0007]
The filling device 11 shown in FIGS. 2 to 4 and the like has the above-described bag body 1 connected in a strip shape, and the connection direction is set to the supply direction while the mouth portion 2 of each bag body 1 is located on the upper side and the downstream side. Are provided at the same height with a predetermined distance from each other, and the opposite sides of the mouth 2 are inserted into the guide groove 4 of the mouth 2 so that the mouth 2 A pair of guide plates 12 and 12 that guide the movement of the mouth portion 2 in a state where the mouth portion 2 is supported, and the bag bodies 1 and 1 that are connected by pressing and moving the mouth portion 2 supported by the guide plates 12 and 12. ,... Are fed in one direction along the connecting direction, and the mouth portion 2 of the bag body 1 that is newly moved toward the guide plates 12 and 12 by being fed by the feeding portion 13 A guide portion 14 for guiding the guide plate 12 to enter the guide groove 4; Further, a gripping part (positioning means) 16 that grips the mouth part 2 sequentially fed by the feeding part 13 so as to be positioned at a fixed position, and a bag body from the mouth part 2 gripped by the gripping part 16. A filling portion (filling means) 17 that fills the liquid 1 and closes the mouth portion 2 with a cap 6 (see FIG. 7 and the like), and a bag that is filled with liquid and that is fed in a state where the mouth portion 2 is closed. The body 1, 1,... Is divided into individual bags 1 and a cutting unit (cutting means) 18 conveys the bags 1, 1,. A transport unit (transport means) 19, a cardboard set unit 20 for receiving the bag body 1 transported by the transport unit 19 into the corrugated cardboard 7 in an upper opening state, and a bag body 1 transported by the transport unit 19 and dropped. Drop hopper 22 for guiding the drop to the corrugated cardboard 7 and a feeding portion 3, the grip portion 16, and a filling portion 17, the cutting unit 18, the control unit (control means) for controlling the operation of such conveyor section 19 and the cardboard setting section 20 23.
[0008]
The feed section 13 is provided at a side position with respect to the gap between the guide plates 12 and 12 so as to be movable along the extending direction thereof, and the feed section 25 reciprocates along the direction. A first feed part 27 having a feed drive part 26 such as an air cylinder to be moved, and a feed provided movably along the extending direction at other side positions with respect to the gap between the guide plates 12 and 12 A second feed unit 30 having a body 29 and a feed drive unit 29 such as an air cylinder that reciprocates the feed member 29 along the direction.
[0009]
The feed body 25 of the first feed section 27 is rocked by driving of a drive section (not shown) between a position protruding toward the mouth portion 2 supported by the guide plates 12 and 12 and a position escaping from the mouth portion 2. An oscillating member 31 is provided, and the oscillating member 31 protrudes toward the mouth portion 2 on the upstream side in the feed direction of the mouth portion 2 with the feed body 25 positioned on the upstream side in the feed direction. When the feed body 25 is moved to the downstream side in the feed direction by the feed drive unit 26, the swing member 31 presses and moves the mouth portion 2, that is, the bag bodies 1, 1,. Further, from this state, the feed member 25 is moved upstream in the feed direction by the feed drive unit 26 while swinging the swing member 31 in a direction to escape from the mouth portion 2 to avoid interference with the other mouth portion 2. Prepare for the next feed.
[0010]
The feed body 28 of the second feed section 30 is also swayed by driving of a drive section (not shown) between a position protruding to the mouth 2 side supported by the guide plates 12 and 12 and a position escaping from the mouth 2. An oscillating member 32 is provided, and the oscillating member 32 protrudes toward the mouth portion 2 on the upstream side in the feeding direction of the mouth portion 2 in a state where the feed body 28 is positioned on the upstream side in the feeding direction. When the feed body 28 is moved to the downstream side in the feed direction by the feed drive unit 29, the swing member 32 presses and moves the mouth portion 2, that is, the bag bodies 1, 1,. Further, from this state, the feed member 28 is moved upstream in the feed direction by the feed drive unit 29 while the swing member 32 is swung in the direction of escaping from the mouth 2 to avoid interference with the other mouth 2. Prepare for the next feed.
The first feeding unit 27 and the second feeding unit 29 operate the feeding bodies 25 and 28 in the same direction almost simultaneously to press and move the different mouths 1 and 1 at the same timing to increase the feeding force. It has become.
In the following description, the feeding direction of the bag 1 by the feeding unit 13 (the horizontal direction from right to left in FIG. 2 is simply referred to as the feeding direction).
[0011]
The gripping part 16 grips the mouth part 2 delivered from the guide plates 12 and 12 and performs positioning in both the horizontal and vertical directions, and is provided on the downstream side of the feeding part 13 in the feeding direction. As shown in FIG. 6, a pair of large claws 35 extending from the downstream side with respect to the mouth 2 sent by the second feeding portion 30 and gripping the mouth 2 from both sides in the horizontal direction for positioning. 35 and a pair of small claw portions 36, 36 that are provided on the large claw portions 35, 35 and hold the mouth portion 2 from both sides in the horizontal direction together with the large claw portions 35, 35 for positioning. ing.
[0012]
The large claw portions 35, 35 are provided so that the base end side thereof is freely rotatable around a vertical axis, and gears 37, 37 are fixed to coincide with the axis, and the gears 37, 37 mesh with each other. Has been. Then, the tip side is opened and closed by rotating one of these gears 37 by a predetermined angle in both forward and reverse directions by a drive unit 34 (see FIG. 3) such as an air cylinder. Each of the small claw portions 36 and 36 is swingably supported by support shafts 38 and 38 provided on the large claw portions 35 and 35, and each is driven by a drive portion 39 or 39 such as an air cylinder. Open and close.
[0013]
As shown in FIGS. 2 to 4, the filling unit 17 is provided on the downstream side of the feeding unit 13 in the feeding direction, and fills the mouth 2 that is gripped and positioned by the gripping unit 16 with a liquid. A closing part 42 for screwing the cap 6 into the mouth part 2 gripped and positioned by the gripping part 16, a moving part 43 for switching the positions of the filling main body part 41 and the closing part 42, and the closing part 42 And a cap supply unit 44 for supplying the cap 6 to the head.
[0014]
The cap supply unit 44 includes a parts feeder 46 that stocks a large number of caps 6 and supplies them one by one, and a sending unit 47 that feeds the caps 6 fed out by the parts feeder 46 to a position where they can be received by the closing unit 42. Has been.
[0015]
As shown in FIG. 7, the parts feeder 46 includes a chute 48 that is inclined so that the tip side is positioned downward, and two stoppers 49 and 50 that are provided at the tip of the chute 48 so as to protrude into the chute 48. Projection drive parts 51 and 52 such as solenoids for reciprocating the stoppers 49 and 50 are provided.
These projecting drive portions 51 and 52 project the stopper 49 located on the distal end side of the chute 48 and retract the stopper 50 on the other side to bring one cap 6 into contact with the stopper 49 on the distal end side. The stopper 50 on the other side is protruded to restrict the movement of the cap 6 next to the cap 6, and the stopper 49 on the tip side is pulled in so that only the one cap 6 is extended from the chute 48 with an inclination. . In this way, the caps 6 are fed out from the chute 48 one by one.
[0016]
As shown in FIG. 8, the delivery unit 47 receives the cap 6 that is fed from the tip of the chute 48 and places it on the mounting table 53, and the cap 6 that is fed to the mounting table 53 at a predetermined position on the tip of the mounting table 53. The feed body 54 is provided so as to be movable so as to be sent out to the head, and a feed drive unit 55 such as an air cylinder that reciprocates the feed body 54.
[0017]
As shown in FIGS. 9 and 10, the moving unit 43 includes a moving body 57 that is movable along a horizontal direction (left and right direction in FIG. 9) orthogonal to the feeding direction, and reciprocatingly moves the moving body 57. And a moving drive unit 58 such as an air cylinder.
[0018]
A part of the filling main body portion 41 and a closing portion 42 are provided in parallel with the moving body 43 in the horizontal direction.
Among them, the filling main body 41 includes a filling nozzle 60 provided on the moving body 43 so as to be movable in the vertical direction, an elevating drive unit 61 such as an air cylinder that reciprocates the filling nozzle 60, and a filling nozzle 60. A liquid supply unit (not shown) that supplies liquid and discharges it from the lower opening 60a of the filling nozzle 60 at a predetermined pressure.
[0019]
The closing portion 42 includes a screwing portion 64 provided on the moving body 57 so as to be movable along the vertical direction, and an elevating drive portion 65 such as an air cylinder that reciprocates the screwing portion 64. Yes. The screwing portion 64 includes a screwing body 66 that is rotatably provided at the lower end and can hold the cap 6, and a driving unit such as a motor (not shown) that rotates the screwing body 66.
[0020]
Here, the moving body 57 aligns the horizontal position of the filling nozzle 60 with the mouth part 2 gripped and positioned by the gripping part 16, and sets the horizontal position of the screwing part 64 on the mounting table 53. It moves between a filling position that fits on the cap 6 sent out by the delivery part 47 and a screwing position that matches the horizontal position of the screwing part 64 on the mouth part 2. When the nozzle 60 is lowered, the filling nozzle 60 closes the mouth portion 2 against the outside air, and the lower opening 60a is positioned in the mouth portion 2 to allow liquid filling, and the filling nozzle 60 is lowered at the filling position. As a result, the lower opening 60a of the filling nozzle 60 is positioned in the mouth portion 2 so that the liquid can be filled. In this state, when the screwing portion 64 is lowered, the cap 6 on the mounting table 53 is screwed into the screwed body 66. Mated to Supposed to be lifting, further, in screwed position, by rotating the screw combined 66 lowers the engagement portion 64, so that screwing the cap 6 to the external thread 3 of the neck portion 2. Here, when moving between the filling position and the screwing position, the filling nozzle 60 and the screwing part 64 are raised.
[0021]
As shown in FIG. 11, a first press such as an air cylinder having a vertically movable movable body 68 located below the mouth 2 in a state of being gripped by the gripping portion 16 is provided below the gripping portion 16. A portion (first pressing means) 69 is provided. The first pressing portion 69 raises the pressing body 68 so that the pressing body 68 supports the bag body 1 in a state where the mouth portion 2 is gripped by the gripping portion 16 from below, and the lower surface 1b (FIG. 1) is brought into contact with the inner side of the mouth part 2 held by the holding part 16, that is, the lower edge part. In addition, the area of the upper surface which supports the bag body 1 of the press body 68 is made smaller than the area of the bag body 1 supported, and the inner position of the bag body 1 is supported.
The first pressing portion 69 can control the upward pressure of the pressing body 68, that is, the pressing force of the bag body 1 by the pressing body 68 by controlling the introduced air pressure.
[0022]
As shown in FIG. 2 and the like, the transport unit 19 extends horizontally along the feed direction of the bag body 1 at a lower position such as the filling unit 17 and a predetermined distance from the guide plates 12 and 12. Orthogonal to the conveying direction of the first roller conveyor 71, the second roller conveyor 72 that is continuous with the roller conveyor 71 and inclined so that the opposite side to the roller conveyor 71 is positioned downward And a driving unit (not shown) that rotationally drives all the rollers 72a arranged horizontally. In addition, the center position of the width direction orthogonal to the conveyance direction of the 1st roller conveyor 71 and the 2nd roller conveyor 72 is made to correspond on the center axis line of the mouth part 2 in the hold | gripped state. Further, the position of the second roller conveyor 72 in the feeding direction is such that the upstream end is upstream from the downstream edge of the bag body 1 in which the mouth 2 is gripped by the grip 16. And it is set so that it may be located downstream from the mouth part 2.
As shown in FIG. 13 to FIG. 16, a pressing body (second pressing body) 100 that is movable up and down is disposed on the middle of the second roller conveyor 72 and at a side position downstream of the gripping portion 16. A second pressing portion (second pressing means) 101 such as an air cylinder is provided. The second pressing portion 101 lowers the pressing body 100 so that a part other than the mouth portion 2 of the bag body 1 in a state where the mouth portion 2 is gripped by the gripping portion 16 by the pressing body 100 from above. Press. The second pressing portion 101 can control the downward pressure of the pressing body 100, that is, the pressing force of the bag body 1 by the pressing body 100 by controlling the introduced air pressure.
A third pressing portion (such as an air cylinder) having a pressing body (third pressing body) 103 that can move up and down by aligning the position in the horizontal direction with the pressing body 100 below the second pressing portion 101. (Third pressing means) 104 is provided. The third pressing portion 104 raises the pressing body 103 by projecting it from the gap between the rollers 72 a and 72 a of the second roller conveyor 72, so that the mouth portion 2 is gripped by the gripping portion 16 by the pressing body 103. When the second pressing portion 101 lowers the pressing body 100 at this time, a part of the bag body 1 between the pressing body 100 is pressed. Hold on. The third pressing portion 104 can control the upward pressure of the pressing body 103, that is, the pressing force of the bag body 1 by the pressing body 103 by controlling the introduced air pressure.
[0023]
The cutting unit 18 is provided on the middle of the second roller conveyor 72 and on the downstream side of the second pressing unit 101 and the third pressing unit 104, and is orthogonal to the conveying direction of the second roller conveyor 72. A cutter 74 which is arranged in a virtual plane and is provided so as to be movable up and down in the virtual plane and has a cutting edge formed at the lower end; and a drive unit 75 such as an air cylinder which reciprocates the cutter 74 up and down. The position of the cutting part 18 can be changed along the transport direction. Then, the gripper 16 is fixed by gripping the mouth 2, and the gripped upstream bag body 1 and one downstream downstream of the liquid already filled with the mouth An extension line of the cutter 74, that is, the imaginary plane is located at the center of the seal portion 1c (see FIG. 1) extending perpendicular to the feed direction, which is a boundary portion between the closed bag body 1 and 2. In this way, positioning is performed according to the size of the bag body 1.
Here, the cutter 74 passes through the gaps between the rollers 72a and 72a of the second roller conveyor 72 from above at the time of cutting, and returns to the upper side. Therefore, the pitch of the rollers 72a and 72a is determined by the bag to be handled. The pitch is set so as to allow passage of the cutter 74 whose position has been adjusted corresponding to all the sizes of the body 1.
[0024]
The dropping hopper 22 is provided along the vertical direction below the end portion in the conveying direction of the second roller conveyor 72. As shown in FIG. 12, the drop hopper 22 has a side surface extending perpendicularly to the feed direction so as to have a constant inner width in the horizontal direction (the left-right direction shown in FIG. 12C). Side portions 85, 84 and vertically extending along the feed direction so that the lower inner width in the horizontal direction orthogonal to the feed direction is substantially the same as the inner width between the side portions 83, 84, 86, side portions 87, 88 extending vertically along the feed direction so that the inner width on the upper side in the horizontal direction perpendicular to the feed direction is larger than the inner width between the side portions 85, 86, and side portions 85 and 87 are connected to each other, or side surfaces 86 and 88 are connected to each other to form a cylindrical shape having inclined surface portions 89 and 90 that are inclined in a mirror-symmetric manner. One size larger than the size of the filled bag 1 It has been.
The dropping hopper 22 is arranged such that the center position of the inner width in the horizontal direction along the feed direction, that is, the center position between the side faces 83 and 84 is vertically below the position of the end portion of the transport section 19 and feeds. The center position of the inner width in the horizontal direction orthogonal to the direction, that is, for example, the center position between the side surface portions 85 and 86 is attached in a state of being arranged vertically below the center position in the same direction of the transport unit 19.
[0025]
The cardboard set unit 20 is mounted on the lower side of the drop-in hopper 22 with the rectangular parallelepiped cardboard 7 extended in the direction perpendicular to the feeding direction with the pair of side surfaces 7a and 7b opened in an upper open state. The mounting table 77 and a lifting drive unit 78 for moving the mounting table 77 up and down are provided. On the mounting table 77, a positioning member 79 for positioning the cardboard 7 in the horizontal direction is provided. The positioning member 79 is positioned so that the center position of the inner width between the side surface portions 7a and 7b in the feeding direction (left-right direction shown in FIG. 2) is arranged vertically below the position of the end portion of the second roller conveyor 72. The cardboard 7 is positioned. The center position of the inner width between the side portions along the feeding direction of the corrugated cardboard 7 is arranged vertically below the center position of the second roller conveyor 72 in the same direction by visual observation, for example.
[0026]
The control unit 23 controls the driving / stopping of each driving unit described above and the direction or speed of driving as necessary, and filling / stopping liquid via a filling nozzle 60 by a liquid supply unit (not shown), and The air pressure introduced into the first pressing portion 69 is controlled.
In this embodiment, the controller 23 raises the pressing body 68 by the first pressing portion 69 before the liquid is filled by the filling portion 17, and the mouth 2 is moved to the gripping portion 16 by the pressing body 68. The bag body 1 in a gripped state is supported from the lower side, and the lower surface 1b of the bag body 1 is brought into contact with the lower edge of the mouth part 2 gripped by the gripping portion 16. In this case, the pressing body The support pressure of the bag body 1 by 68 is set to a high pressure. In addition, when filling the liquid by the filling unit 17, the support pressure of the bag body 1 by the pressing body 68 of the first pressing unit is set to a predetermined constant filling pressure of the liquid by the filling unit 17 at the same timing as the filling start. On the other hand, the pressure is controlled so as to be lower by a predetermined amount.
In addition, what is shown with the code | symbol 81 in FIG. 2 is a leg part for making the whole filling apparatus high corresponding to having inclined the 2nd roller conveyor 72 so that the downstream side may be located below.
[0027]
Next, the operation of the filling device 11 controlled by the control unit 23 will be described.
First, one end of the continuous bag body 1 is pulled, the mouth portion 2 is supported between the guide plates 12 and 12 from the guide portion 14 side of the filling device 11, and the mouth portion 2 of the one end is further moved. And located downstream of the second feed section 30. At this time, the mouth portion 2 of the bag body 1 connected to the bag body 1 is also sequentially supported between the guide plates 12 and 12 by the guide portion 14.
[0028]
Then, the operator operates to start the filling operation. Then, as shown in FIG. 13, the control unit 23 sets the first pressing unit 69 to the OFF state in which the pressing body 68 is lowered, and sets the second pressing portion 101 to the OFF state in which the pressing body 100 is lifted. 3 The pressing portion 104 is set to the OFF state in which the pressing body 103 is lowered, and the feeding portion 13 that is located on the upstream side and is waiting is maintained while maintaining the state in which these are retracted so as not to interfere with the movement of the bag body 1. The feed bodies 25 and 28 of the first feed section 27 and the second feed section 30 are moved to the downstream side almost simultaneously. As a result, the rocking members 31 and 32 of the respective feeding bodies 25 and 28 press and move the separate mouth portions 2 and 2 to the downstream side. In particular, the mouth portion 2 to which the second feeding portion 30 is moved is opened. It is located between the large claws 35, 35 of the grip 16 that is waiting in a state. Subsequently, the control unit 23 closes the large claws 35 and 35 of the grip 16 and also closes the small claws 36 and 36. As a result, the mouth 2 is gripped by the large claws 35 and 35 and the small claws 36 and 36 for positioning.
[0029]
Subsequently, as shown in FIG. 14, the control unit 23 introduces air into the first pressing unit 69 and raises the pressing body 68 by setting the operating pressure to a high pressure. The bag 2 in a state where the portion 2 is gripped by the gripping portion 16 is supported from the lower side, and the lower surface 1b which is a part thereof is brought close to the mouth portion 2 gripped by the gripping portion 16, and then the lower edge portion thereof Abut. At almost the same time, air is introduced into the second pressing portion 101 and the operating pressure is increased to lower the pressing body 100 to be in the ON state, and air is introduced into the third pressing portion 104 and the operating pressure is increased. The pressing body 103 is raised to the ON state, and with these pressing bodies 100 and 103, a part of the bag body 1 in a state where the mouth portion 2 is gripped by the grip portion 16 is vertically moved at a position slightly lower than the mouth portion 2. Hold from both sides. Thereby, the air inside the bag body 1 in a state where the mouth portion 2 is gripped by the grip portion 16 is discharged to the outside, and the amount of air is reduced. In addition, the bag body 1 is brought into contact with the mouth portion 2 by the pressing body 68 with a slight delay from the timing when the pressing bodies 100 and 103 hold the bag body 1.
On the other hand, the stopper 49 on the front end side of the parts feeder 46 of the cap supply unit 44 is opened to feed one cap 6 to the mounting table, and the cap 6 is advanced by the sending body 54 of the sending unit 47 to a predetermined position. Position.
[0030]
In this state, the control unit 23 lowers the filling nozzle 60 that has been waiting above the gripping unit 16 to close the mouth 2 against the outside air, and causes the lower opening 60a to enter the mouth 2. Thereafter, the liquid is discharged from a liquid supply unit (not shown), and at the same time, the air pressure of the third pressing unit 104 is released to turn it OFF so that the pressing body 103 is unrelated to the bag body 1 below the second roller conveyor 72. The second pressing portion 101 is kept in the ON state to lower the air pressure, and the operating pressure slightly lower than a predetermined filling pressure of the liquid, that is, the pressing force exerted on the bag body 1 by the pressing body 100 is lowered. While controlling the pressure so that the pressure is obtained, the air pressure is lowered while the first pressing portion 69 is also in the ON state, and the operating pressure slightly lower than the predetermined filling pressure of the liquid, that is, the pressing body 68 is applied to the bag body 1. Pushing To control so that the force can be obtained.
[0031]
By the above operation of the first pressing portion 69, as shown in FIG. 15, the pressing body 68 is slightly lowered by the filling pressure discharged from the filling nozzle 60, and the liquid is filled into the bag body 1. Then, the amount of lowering of the pressing body 68 increases following the increase in the weight of the bag body 1 as the liquid filling amount increases, so that the pressing body 68 enters the inner side of the bag body 1 in the horizontal direction in the initial stage of filling. Thus, the filled liquid enters the vicinity of the edge portion of the bag body 1 that is not supported by the pressing body 68 first. Furthermore, since the edge of the bag body 1 farthest from the mouth portion 2 is positioned at the lowest position due to the inclination of the second roller conveyor 72, the liquid enters the portion first.
In addition, the above-described operation of the second pressing portion 101 maintains the state in which the upper portion of the bag body 1 is positioned below the mouth portion 2 during liquid filling.
[0032]
The control unit 23 lowers the screwing portion 64 of the closing portion 42 simultaneously with the lowering of the filling nozzle 60, engages the cap 6 being sent out by the sending portion 47 with the screwed body 66, and then raises the cap.
When a predetermined amount of liquid is discharged from the liquid supply unit (not shown) through the filling nozzle 60, the control unit 23 stops discharging the liquid by the liquid supply unit, and the filling nozzle 60 And the moving body 57 of the moving part 43 is moved so that the screwing part 64 is positioned immediately above the mouth part 2 gripped by the gripping part 16, and the screwing part 66 is lowered while the screwing part 66 is rotated. Then, after the cap 6 is screwed to the male screw 3 of the mouth portion 2, the screwing portion 64 is raised, and the moving body 57 is moved to the original position.
On the other hand, as shown in FIG. 16, the first pressing portion 69 and the second pressing portion 101 are in the ON state at the low pressure until the screwing of the cap 6 to the mouth portion 2 is completed, that is, until the bag body 1 is sealed. The air is removed after the screwing is completed, and is turned off. Then, the gripping part 16 is opened to release the gripping of the mouth part 2 to complete one filling operation.
[0033]
The control unit 23 repeatedly performs the above filling operation, sequentially introduces liquid into the continuous bag body 1 and closes the mouth portion 2 thereof, and feeds it with the conveying force of the second roller conveyor 72 in the driven state. As the unfilled bag 1 is fed by the section 13, it is sent to the downstream side.
Then, the control unit 23 lowers the cutter 74 of the cutting unit 18 in a state where one bag body 1 is gripped by the gripping unit 16, and sets the most downstream side bag body 1 in the connected state to the other one. The cut bag body 1 is transported at a predetermined speed by the second roller conveyor 72 of the transport section 19 in a driving state. Then, the bag body 1 transported by the second roller conveyor 72 falls from the end portion of the bag 1 that is farthest away from the mouth 2 and is guided by the dropping hopper 22 to corrugated cardboard setting portion 20. Is dropped into the cardboard 7 positioned by the positioning member 79.
[0034]
According to the filling device 11 of this embodiment described above, the following effects can be obtained.
Before filling the liquid by the filling part 17, the bag body 1 is pressed from the lower side by the pressing body 68 of the first pressing part 69, and a part of the lower side is brought close to the mouth part 2 positioned by the gripping part 16. At the same time, by holding a part of the bag body 1 between the pressing body 100 of the second pressing portion 101 provided on the side and the pressing body 103 of the third pressing portion 104, The amount of air can be reduced.
Therefore, since the remaining amount of air in the bag 1 at the time of filling the liquid by the filling portion 17 can be reduced, it is possible to prevent filling defects such as liquid overflow. For this reason, it is possible to cope with a large capacity.
Further, when the liquid is filled by the filling body portion 41 of the filling portion 17, the pressing force of the bag body 1 by the pressing body 68 of the first pressing portion 69 is slightly lower than the liquid filling pressure by the filling body portion 41. Thus, at the start of filling, almost only the filling pressure acts on the pressing body 68, and the gap between the inside of the mouth portion 2 and the lower surface 1b which is a part of the bag body 1 supported by the pressing body 68 is minimized. As the filling amount increases, the weight of the filled liquid in addition to the filling pressure acts on the pressing body 68, and as a result, the pressing body 68 descends following the increase in the filling amount of the liquid. become. Therefore, in the initial stage of filling, the pressing body 68 enters and supports the inner side of the bag body 1 in the horizontal direction, so that the filled liquid moves downward near the edge of the bag body 1 that is not supported by the pressing body 68. While being positioned, it enters the vicinity of the edge portion first. Therefore, the air can be prevented from remaining at the edge portion where the air is likely to remain, so that the above effect is further enhanced.
[0035]
At the time of filling, the pressing body 68 enters and supports the inside of the bag body 1 in the horizontal direction, so that the filled liquid positions the vicinity of the edge of the bag body 1 that is not supported by the pressing body 68 downward. However, it enters the vicinity of the end edge portion. Accordingly, the air can be prevented from remaining at the edge portion where the air is likely to remain, so that the above effect is further enhanced. In addition, the position of the second roller conveyor 72 in the feeding direction is such that the upstream end is upstream from the downstream edge of the bag body 1 in which the mouth 2 is gripped by the grip 16. Since the second roller conveyor 72 is inclined, the end of the bag body 1 that is farthest from the mouth portion 2 is positioned downward. The liquid enters the part first. Therefore, since the air can be prevented from remaining at the end portion located farthest from the mouth portion 2 where air is most likely to remain, the above effect is further enhanced.
In addition, since the second pressing portion 101 maintains the ON state at a low pressure until the screw 6 is completely screwed into the mouth portion 2, the upper portion of the bag body 1 is positioned below the mouth portion 2. The bag body 1 is maintained despite the fact that the mouth 2 is opened to the outside air between the interval after the filling nozzle 60 is filled and the screw 6 is completely screwed. It is possible to prevent air from entering the inside due to the tension of the wire. Therefore, the above effect is further enhanced.
[0036]
Since the center position of the drop hopper 22 in the feed direction of the transfer unit 19 is arranged vertically below the end of the second roller conveyor 72, which is the end of the transfer unit 19, the bag body 1 is placed in the drop hopper. The cardboard 7 can be satisfactorily accommodated in a certain posture in which the mouth portion 2 is positioned on the upper side and the upstream side in the feeding direction without being hooked or turned upside down at 22. Moreover, the bag body 1 cut by tilting the second roller conveyor 72 so that the downstream side is positioned below is avoided from being conveyed by free fall, and the bag body 1 is fed by the driving force of the second roller conveyor 72. Therefore, the speed at which the bag body 1 dropped from the end of the second roller conveyor 72 falls is constant, so that the bag body 1 is dropped more reliably and hooked or turned over by the hopper 22. The cardboard 7 can be accommodated in a certain posture without being.
[0037]
Since the roller conveyor 72 is adopted as a conveying device on which the cutting between the bag bodies 1 and 1 is performed by the cutting unit 18, there are many gap positions between the rollers 72a and 72a. By using this gap as a relief when the cutting portion 18 passes through the cutter 74, the position of the cutting portion 18 can be easily changed according to the size of the bag body 1. Therefore, it can respond easily to various types of bags 1 having different sizes.
[0038]
【The invention's effect】
As described above in detail, according to the filling device of the present invention, a roller conveyor having a large number of gap positions between rollers is adopted as a conveying unit on which cutting between bag bodies is performed. Thus, the position of the cutting means can be easily changed according to the size of the bag body by using the large number of gaps as relief when the cutting means passes through the cutter.
Therefore, it can respond easily to various types of bags having different sizes.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a bag used in a filling device according to an embodiment of the present invention.
FIG. 2 is a front view showing a filling device according to one embodiment of the present invention.
FIG. 3 is a plan view showing a filling device according to an embodiment of the present invention. FIG. 4 is an arrow view of the filling device according to the embodiment of the present invention as viewed from the direction A shown in FIG. is there.
FIG. 5 is a plan view showing a grip portion of the filling device according to the embodiment of the present invention.
6 is an arrow view of the grip portion of the filling device according to the embodiment of the present invention as seen from the direction B shown in FIG.
7A and 7B show a part of a parts feeder of a filling device according to an embodiment of the present invention, in which FIG. 7A is a side view, and FIG. 7B is a view as viewed from the direction C shown in FIG. is there.
FIGS. 8A and 8B show a delivery unit of a filling device according to an embodiment of the present invention, in which FIG. 8A is a plan view and FIG. 8B is a view as viewed from the direction D shown in FIG.
FIG. 9 is a front view showing a part of the filling unit of the filling apparatus according to the embodiment of the present invention.
10 is an arrow view of a part of the filling unit of the filling device according to the embodiment of the present invention as seen from the direction E shown in FIG.
FIG. 11 is a front view showing a first pressing portion and the like of the filling device according to the embodiment of the present invention.
FIGS. 12A and 12B show a drop hopper of a filling device according to an embodiment of the present invention, where FIG. 12A is a front view, FIG. 12B is a bottom view, and FIG. 12C is from the direction F shown in FIG. FIG.
FIG. 13 is a front view showing one state of the filling unit and the like of the filling device according to the one embodiment of the present invention.
FIG. 14 is a front view showing another state of the filling unit and the like of the filling device according to the embodiment of the present invention.
FIG. 15 is a front view showing still another state of the filling unit and the like of the filling device according to the embodiment of the present invention.
FIG. 16 is a front view showing still another state of the filling unit and the like of the filling device according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bag body 2 Mouth part 11 Filling device 13 Feed part (feed means)
16 Gripping part (positioning means)
17 Filling part (filling means)
18 Cutting part (cutting means)
19 Conveying section (conveying means)
72a, 72a roller 74 cutter

Claims (1)

内外を連通させる口部をそれぞれが有するとともに多数が連結されて帯状をなす樹脂製の袋体を、口部を上に向けた状態で連結方向に沿って送る送り手段と、
該送り手段で送られる袋体の口部を順次一定位置に位置決めする位置決め手段と、
該位置決め手段で位置決めされた口部から袋体内に液体を充填し口部を閉塞させる充填手段と、
該充填手段で液体が充填されたのちの袋体を搬送する搬送手段と、
前記位置決め手段で上流側の袋体の口部が位置決めされることにより一定する、前記搬送手段上の、液体が充填された袋体と該袋体の上流側に隣り合う袋体との間位置に、上方からカッタを通過させて切断を行う切断手段とを有し、
前記搬送手段に、多数の回転駆動可能なローラが前記カッタの通過を許容できる間隔をあけて平行に配置されたローラコンベアを用いると共に、前記切断手段が前記ローラ間の隙間に上方からカッタを通過させて前記液体が充填された袋体と上流側に隣り合う袋体との間を切断することを特徴とする充填装置。
A feeding means for sending a plastic bag body having a plurality of connected mouth portions each having a mouth portion communicating between the inside and the outside along the connecting direction with the mouth portion facing upward,
Positioning means for sequentially positioning the mouth portion of the bag body fed by the feeding means at a fixed position;
Filling means for filling the bag body with liquid from the mouth portion positioned by the positioning means and closing the mouth portion;
Conveying means for conveying the bag after the liquid is filled by the filling means;
Position between the bag body filled with the liquid and the bag body adjacent to the upstream side of the bag body, which is fixed by positioning the mouth portion of the upstream bag body by the positioning means. And a cutting means for cutting by passing the cutter from above,
The transport means, Rutotomoni using roller conveyor arranged in parallel at an interval in which a large number of rotary drivable roller can permit passage of the cutter, the cutter from above the cutting means is a gap between the rollers A filling device for cutting between a bag filled with the liquid and a bag adjacent to the upstream side .
JP08864796A 1996-04-10 1996-04-10 Filling equipment Expired - Fee Related JP3673014B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08864796A JP3673014B2 (en) 1996-04-10 1996-04-10 Filling equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08864796A JP3673014B2 (en) 1996-04-10 1996-04-10 Filling equipment

Publications (2)

Publication Number Publication Date
JPH09278003A JPH09278003A (en) 1997-10-28
JP3673014B2 true JP3673014B2 (en) 2005-07-20

Family

ID=13948620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08864796A Expired - Fee Related JP3673014B2 (en) 1996-04-10 1996-04-10 Filling equipment

Country Status (1)

Country Link
JP (1) JP3673014B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007238129A (en) * 2006-03-08 2007-09-20 Toppan Printing Co Ltd Inner bag for bag-in box
JP4994728B2 (en) * 2006-07-12 2012-08-08 株式会社畑山製衡所 Liquid filling machine for plastic bags

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