JP3670047B2

JP3670047B2 - Packaging equipment

Info

Publication number: JP3670047B2
Application number: JP05157995A
Authority: JP
Inventors: 継雄兼岡; 雅也市川; 崇文染谷
Original assignee: Fujimori Kogyo Co Ltd
Current assignee: Fujimori Kogyo Co Ltd
Priority date: 1995-03-10
Filing date: 1995-03-10
Publication date: 2005-07-13
Anticipated expiration: 2020-07-13
Also published as: JPH08244701A

Description

【０００１】
【産業上の利用分野】
本発明は、被包装物を包装する包装装置に関し、詳しくは、粉、粒体あるいは含水分が多い物質等、壁面に付着し易い被包装物の包装に用いて好適な包装装置に関する。
【０００２】
【従来の技術】
包装装置の一例として、上下方向に沿って配置されるとともに、帯状の包装フィルムが両端縁部を合わせた状態で外周側に巻き付けられる筒状の製袋筒と、該製袋筒で合わせられた包装フィルムの両端縁部同士を両側から挟んで接着させる第一シール手段と、製袋筒に巻き付けられた包装フィルムを下方に送る移送手段と、製袋筒の下方に設けられ、該製袋筒から下方に送られた包装フィルムを両側から挟んで接着させる第二シール手段と、製袋筒内に設けられ、被包装物を計量して下部出口部から落下させる計量手段とを有し、第一シール手段で両端縁部同士が接着されかつ第二シール手段で下側が閉塞された状態の包装フィルム内に、被包装物を、計量手段から落下させ製袋筒から排出させて充填した後、該被包装物が充填された包装フィルムの上側を第二シール手段で閉塞させてピロー型の包装物を形成するものがある。
【０００３】
上記包装装置において、製袋筒は、最終的な包装物の外寸法を規制するため、均一な外径の円筒状とされており、また、内径も均一とされている。
【０００４】
【発明が解決しようとする課題】
上記のように製袋筒が均一な内径であると、被包装物が、粉、粒体あるいは含水分が多い物質等の場合、計量手段の下部出口部から落下された被包装物が製袋筒の内周面に付着してしまうことがある。
これにより、包装物に充填される被包装物の量が若干ばらつくという問題が生じた。
さらに大きな問題として、上記のように製袋筒の内周面に付着していた被包装物は、落下のタイミングを制御することが不可能であるため、第二シール手段による接着直前のタイミングで落ちると、この被包装物を接着部分に挟み込んで接着が行われ、これにより接着部分にシール不良を生じてしまうことがあった。
【０００５】
したがって、本発明の目的は、計量手段の下部出口部から落下された被包装物が製袋筒の内周面に付着してしまうことを防止することにより、被包装物の充填量の正確性を増し、かつシール不良の発生を防止することができる包装装置を提供することである。
【０００６】
【課題を解決するための手段】
上記目的を達するため、本発明の請求項１記載の包装装置は、上下方向に沿って配置されるとともに、帯状の包装フィルムが両端縁部を合わせた状態で外周側に巻き付けられる筒状の製袋筒と、該製袋筒で合わせられた包装フィルムの両端縁部同士を両側から挟んで接着させる第一シール手段と、前記製袋筒に巻き付けられた包装フィルムを下方に送る移送手段と、前記製袋筒の下方に設けられ、該製袋筒から下方に送られた包装フィルムを両側から挟んで接着させる第二シール手段と、前記製袋筒内に設けられ、被包装物を計量して下部出口部から落下させる計量手段とを有し、前記第一シール手段で両端縁部同士がシールされかつ第二シール手段で下側が閉塞された状態の包装フィルム内に、被包装物を、前記計量手段から落下させ前記製袋筒から排出させて充填した後、該被包装物が充填された包装フィルムの上側を前記第二シール手段で閉塞させてピロー型の包装物を形成する包装装置において、前記製袋筒は前記包装フィルムが両端縁部を合わせた状態で外周側に巻き付けられる外筒部と、内周側に前記計量手段が設けられ、かつ前記計量手段の下部出口部より下側の内周面に下方大径のテーパ面が形成される内筒部とを有する二重構造とされ、前記内筒部のみに振動を加える加振手段を設けてなることを特徴としている。
【０００９】
本発明の請求項２記載の包装装置は、上下方向に沿って配置されるとともに、帯状の包装フィルムが両端縁部を合わせた状態で外周側に巻き付けられる筒状の製袋筒と、該製袋筒で合わせられた包装フィルムの両端縁部同士を両側から挟んで接着させる第一シール手段と、前記製袋筒に巻き付けられた包装フィルムを下方に送る移送手段と、前記製袋筒の下方に設けられ、該製袋筒から下方に送られた包装フィルムを両側から挟んで接着させる第二シール手段と、前記製袋筒内に設けられ、被包装物を計量して下部出口部から落下させる計量手段とを有し、前記第一シール手段で両端縁部同士がシールされかつ第二シール手段で下側が閉塞された状態の包装フィルム内に、被包装物を、前記計量手段から落下させ前記製袋筒から排出させて充填した後、該被包装物が充填された包装フィルムの上側を前記第二シール手段で閉塞させてピロー型の包装物を形成する包装装置において、前記軽量手段の下部出口部より下側の製袋筒の内周面に、下方大径のテーパ部を形成してなると共に、前記テーパ面に穴部を設け、該穴部から気体を噴出させる噴出手段を設けてなることを特徴としている。
【００１０】
本発明の請求項３記載の包装装置は、請求項１又は請求項２に記載のものに加えて、前記テーパ面にテフロン（登録商標）コーティングを施してなることを特徴としている。
【００１１】
【作用】
本発明の請求項１記載の包装装置によれば、計量手段の下部出口部より下側の製袋筒の内周面に、下方大径のテーパ面を形成してなるため、計量手段の下部出口部より落下する被包装物の落下方向に対し、製袋筒の内周面が外側に存在することになり、よって、該内周面に被包装物が付着し難くなる。また、例え付着することがあっても、テーパ面は下方に向くよう傾斜しているためその付着力が小さくなり、よって落下しやすくなる。
【００１２】
さらに、製袋筒が、包装フィルムが両端縁部を合わせた状態で外周側に巻き付けられる外筒部と、内周側に計量手段が設けられ、かつテーパ面が形成される内筒部とを有する二重構造とされているため、例えば内筒部のみを振動させること等が可能となる。
【００１３】
また、被包装物が内筒部の内周面に付着することが例えあっても、加振手段により内筒部に振動を加えることで被包装物を落下させる。しかも、外筒部は加振手段により加振されることがないため、帯状の包装フィルムを両端縁部を合わせた状態で製袋筒の外筒部に巻き付け、合わされた包装フィルムの両端縁部同士を第一シール手段で両側から挟んで接着させるという製袋作業に振動が悪影響をおよぼすことがない。
【００１４】
本発明の請求項２記載の包装装置によれば、被包装物が内筒部の内周面に付着することが例えあっても、テーパ面に設けられた穴部から噴出手段により気体を噴出させることにより、被包装物を吹き飛ばし落下させる。
【００１５】
本発明の請求項３記載の包装装置によれば、内筒部のテーパ面にテフロン（登録商標）コーティングを施してなるため、例えテーパ面に被包装物が付着することがあっても、付着力が小さく、よって、落下しやすい。
【００１６】
【実施例】
本発明の一実施例による包装装置を図面を参照して以下に説明する。
図１は、本実施例の包装装置の概略構成を示すもので、該包装装置は、縦方向に包装フィルムを送りつつ被包装物を包装してピロー型の包装物を形成する、いわゆる縦型ピロー包装装置である。
【００１７】
該包装装置は、基端側がロール状に巻かれた一定幅の帯状をなす熱溶着性の包装フィルム１１と、該包装フィルム１１を引き出して繰り出すフィルム繰出ローラ１２と、該フィルム繰出ローラ１２による包装フィルム１１の繰り出し側に上下方向に沿って配置されるとともに、包装フィルム１１が両端縁部を合わせた状態で外周側に巻き付けられる円筒状の製袋筒１３と、該製袋筒１３への包装フィルム１１の巻き付けをガイドするガイド板１０と、上下動可能に設けられ製袋筒１３に巻き付けられた包装フィルム１１を吸着した状態で下方に移動することにより該包装フィルム１１を下方に送る移動吸引器（移送手段）１４とを有している。ここで、図１中符号１５で示すものは、包装フィルム１１の張力あるいは位置等を調整する調整ローラであり、符号１６で示すものは包装フィルム１１の有無を検出する光電管装置である。
【００１８】
ここで、ガイド板１０の案内により製袋筒１３の一側に包装フィルム１１の中央部を当接させさらに該包装フィルム１１の両端縁部側を裏側に回した状態で、該包装フィルム１１を下方に送ると、包装フィルム１１が順次両端縁部を合わせた状態で製袋筒１３の外周側に巻き付けられることになる。
【００１９】
製袋筒１３の包装フィルム１１の供給側に対し反対側の側方に、上下方向に沿うセンターシーラ（第一シール手段）１８が設けられている。該センターシーラ１８は、製袋筒１３側に水平移動することにより、製袋筒１３の上下方向に沿うシール部（第一シール手段）１３ａとで、該シール部１３ａ上を移動する包装フィルム１１の両端縁部同士を両側から挟んで熱接着させるようになっている。
【００２０】
製袋筒１３の下方には、水平方向に延在する一対のエンドシールカッター（第二シール手段）２０が上下方向の位置を決められて水平方向の相互近接離間移動のみ可能に設けられている。エンドシールカッター２０は、図示は略すが、上下にシール部が設けられ中央にカッターが設けられたもので、製袋筒１３から下方に送られた包装フィルム１１を両側から挟んで上下二カ所のシール部により熱接着させるとともにこれらの間の部分をカッターで切断するようになっている。
エンドシールカッター２０の下方には、搬送用の排出コンベア２１が設けられている。
【００２１】
製袋筒１３の内側の軸線方向における中間所定位置には、図２に示すように、スクリュー状のオーガ（計量手段）２３が位置固定で回転自在に嵌合されている。該オーガ２３は、連結された駆動装置２３ａに駆動されるもので、製袋筒１３の上部から供給された被包装物を回転量に応じた所定量、下部出口部２４から落下させるようになっている。
【００２２】
そして、本実施例においては、オーガ２３の下部出口部２４より下側の製袋筒１３の内周面に、下部出口部２４から一定角度で拡径する下方大径のテーパ面１３ｂが製袋筒１３の下端部まで形成されている。また、オーガ２３より上側の製袋筒１３の内周面には、上端部から一定角度で縮径する上方大径の受入テーパ面１３ｃが形成されている。
なお、製袋筒１３は、最終的な包装物２６の外寸法を規制するため、外径は均一とされている。
【００２３】
このような、構成の本実施例においては、フィルム繰出ローラ１２で繰り出された包装フィルム１１は、ガイド板１０で案内され両端縁部同士が合わせられた状態で製袋筒１３に巻き付けられ、センターシーラ１８および製袋筒１３のシール部１３ａとで両端縁部同士が熱接着されて筒状とされ、移動吸引器１４で下方に送られる。そして、このようにして筒状とされた包装フィルム１１は、エンドシールカッター２０で熱接着されて下部が閉塞された状態で、さらに移動吸引器１４で下方に所定量送られる。この状態で、製袋筒１３のオーガ２３が駆動装置２３ａにより既定量回転駆動されることで、既定量の被包装物が下部出口部２４から落下され製袋筒１３の下端開口部から排出されて、下部が閉塞された包装フィルム１１内に充填される。
【００２４】
次いで、エンドシールカッタ２０が相互に近接することにより、包装フィルム１１の被包装物が充填された部分より上側同士が熱接着されて閉塞され、さらに、その上側が切断され、さらに該切断部分より上側同士も熱接着により閉塞される。これにより、被包装物が包装された後のピロー型の包装物２６が排出コンベア２１に落下して搬送されるとともに、次の包装のための包装フィルム１１の下部が閉塞されることになる。このようにして、順次包装物２６が形成されていく。
【００２５】
そして、本実施例においては、オーガ２３の下部出口部２４より下側の製袋筒１３の内周面に、下方大径のテーパ面１３ｂを形成してなるため、オーガ２３の下部出口部２４より落下する被包装物の落下方向に対し、製袋筒１３の下側の内周面すなわちテーパ面１３ｂが外側に存在することになり、よって、該テーパ面１３ｂに被包装物が付着し難くなる。このようにしてオーガ２３の下部出口部２４から落下された被包装物が製袋筒１３のオーガ２３より下側の内周面すなわちテーパ面１３ｂに付着してしまうことを防止することができるため、粉、粒体あるいは含水分が多い物質等、壁面に付着し易い被包装物を包装する場合においても、被包装物の充填量の正確性を増すことができ、かつシール不良の発生を防止することができる。また、例え付着することがあっても、テーパ面１３ｂは下方に向くよう傾斜しているためその付着力が小さくなり、よって落下しやすくなる。したがって、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。
【００２６】
なお、上記した粉、粒体あるいは含水分が多い物質等の被包装物の一例としては、まい茸等の茸類の菌を湿らせたおが屑に繁殖させたいわゆる栽培床等があげられる。
ここで、上記おが屑３ｋｇを準備し、２００Ｗ×１２０×４００ｍｍのガセット包装をすると、従来では長時間運転中に製袋筒内におが屑が付着し該付着したおが屑が間断なく落下するためにエンドシールカッターによるシール部分におが屑が噛み込まれてシール不良が発生していたが、このようなおが屑の噛み込みによるシール不良をなくすことができた。
【００２７】
なお、上記実施例は、以下のように変更することも可能である。
図３に示すように、製袋筒１３を、包装フィルム１１（図３においては図示略）が両端縁部を合わせた状態で外周側に巻き付けられるとともにシール部１３ａ（図３においては図示略）が形成される外筒部２８と、その内側に同軸をなした配置されるとともに、内周側にオーガ２３が設けられ、かつテーパ面１３ｂおよび受入テーパ面１３ｃが形成される内筒部２９とを有する二重構造とし、さらに、外筒部２８を内筒部２９と独立して支持するとともに内筒部２９にのみ振動を加える加振装置（加振手段）３２を設ける。
【００２８】
このように構成すれば、被包装物が内筒部２９のオーガ２３より下側の内周面すなわちテーパ面１３ｂに付着することが例えあっても、加振装置３２により内筒部２９に振動を加えることで被包装物を落下させることができるため、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。しかも、外筒部２８は内筒部２９と独立して支持され加振装置３２により加振されることがないため、帯状の包装フィルム１１を両端縁部を合わせた状態で製袋筒１３の外筒部２８に巻き付け、合わされた包装フィルム１１の両端縁部同士をセンターシーラ１８およびシール部１３ａで両側から挟んで接着させるという製袋作業に振動が悪影響をおよぼすことを防止することができる。
【００２９】
また、図４に示すように、製袋筒１３内に気体流路３４を設けるとともに、この気体流路３４からテーパ面１３ｂ側にのみ開口する多数の穴部３１を設け、さらにこの気体流路３４に、エアあるいはＮ₂ガス等の気体を導入して穴部３１から噴出させる気体供給装置（噴出手段）３３を設ける。
【００３０】
このように構成すれば、被包装物が製袋筒１３のオーガ２３より下側の内周面すなわちテーパ面１３ｂに付着することが例えあっても、気体供給装置３３によりテーパ面１３ｂに設けられた穴部３１から気体を噴出させることにより、被包装物を吹き飛ばし落下させることができる。したがって、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。
ここで、気体供給装置３３による穴部３１からの気体の噴出は、包装フィルム１１がエンドシールカッター２０で熱接着される寸前に停止するよう間欠的に行われる。
【００３１】
なお、製袋筒１３を内筒部２９と外筒部２８とで構成し、内筒部２９を加振装置３２で加振するとともに内筒部２９から気体を噴出させるようにしてもよい。この場合、内筒部２９を外筒部２８に対し独立して支持するとともに、内筒部２９に気体流路３４およびこの気体流路３４をテーパ面１３ｂ側に開口させる穴部３１を設け、内筒部２９の気体流路３４に気体供給装置３３を連結すればよい。
【００３２】
加えて、オーガ２３より下側の内周面すなわちテーパ面１３ｂにテフロンコーティングを施すことも可能であり、このように構成すれば、例えテーパ面１３ｂに被包装物が付着することがあっても、付着力が小さく、よって、落下しやすくなるため、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。
【００３３】
さらに、上記実施例においては、オーガ２３を用いて被包装物の計量および供給を行うものを例にとり説明したが、製袋筒１３の内部に軸線方向に直交する方向に出入する仕切板を設け、該仕切板の出入りで被包装物の計量および供給を行う、いわゆる枡切り方式の装置を採用したり、他の種々の計量および供給方式の装置を採用することができる。なお、いずれの場合においても、被包装物が包装フィルム１１に落下される際の出口となる下部出口部より下側に上記テーパ面１３ｂを設けることになる。
【００３４】
【発明の効果】
以上詳述したように、本発明の請求項１記載の包装装置によれば、計量手段の下部出口部より下側の製袋筒の内周面に、下方大径のテーパ面を形成してなるため、計量手段の下部出口部より落下する被包装物の落下方向に対し、製袋筒の内周面が外側に存在することになり、よって、該内周面に被包装物が付着し難くなる。このようにして計量手段の下部出口部から落下された被包装物が製袋筒の内周面に付着してしまうことを防止することにより、被包装物の充填量の正確性を増すことができ、かつシール不良の発生を防止することができる。また、例え付着することがあっても、テーパ面は下方に向くよう傾斜しているためその付着力が小さくなり、よって落下しやすくなる。したがって、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。
【００３５】
また、製袋筒が、包装フィルムが両端縁部を合わせた状態で外周側に巻き付けられる外筒部と、内周側に計量手段が設けられ、かつテーパ面が形成される内筒部とを有する二重構造とされているため、例えば内筒部のみを振動させること等が可能となる。
【００３６】
さらに、被包装物が内筒部の内周面に付着することが例えあっても、加振手段により内筒部に振動を加えることで被包装物を落下させる。したがって、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。しかも、外筒部は加振手段により加振されることがないため、帯状の包装フィルムを両端縁部を合わせた状態で製袋筒の外筒部に巻き付け、合わされた包装フィルムの両端縁部同士を第一シール手段で両側から挟んで接着させるという製袋作業に振動が悪影響をおよぼすことがない。
【００３７】
本発明の請求項２記載の包装装置によれば、被包装物が内筒部の内周面に付着することが例えあっても、テーパ面に設けられた穴部から噴出手段により気体を噴出させることにより、被包装物を吹き飛ばし落下させる。したがって、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。
【００３８】
本発明の請求項３記載の包装装置によれば、内筒部のテーパ面にテフロン（登録商標）コーティングを施してなるため、例えテーパ面に被包装物が付着することがあっても、付着力が小さく、よって、落下しやすい。したがって、被包装物の充填量の正確性をさらに増すことができ、かつシール不良の発生をさらに効果的に防止することができる。
【図面の簡単な説明】
【図１】本発明の一実施例による包装装置を概略的に示す斜視図である。
【図２】本発明の一実施例による包装装置の製袋筒を示す断面図である。
【図３】本発明の別の実施例による包装装置の製袋筒を示す断面図である。
【図４】本発明のさらに別の実施例による包装装置の製袋筒を示す断面図である。
【符号の説明】
１１包装フィルム
１３製袋筒
１３ａシール部（第一シール手段）
１３ｂテーパ面
１４移動吸引器（移送手段）
１８センターシーラ（第一シール手段）
２０エンドシールカッター（第二シール手段）
２３オーガ（計量手段）
２４下部出口部
２６包装物
２８外筒部
２９内筒部
３１穴部
３２加振装置（加振手段）
３３気体供給装置（噴出手段）[0001]
[Industrial application fields]
The present invention relates to a packaging apparatus for packaging an article to be packaged, and more particularly to a packaging apparatus suitable for use in packaging an article to be packaged that easily adheres to a wall surface, such as powder, granules, or a substance having a high moisture content.
[0002]
[Prior art]
As an example of the packaging device, the bag-shaped packaging film is arranged along the vertical direction, and the belt-shaped packaging film is wound around the outer peripheral side in a state in which both edge portions are aligned, and the bag-making cylinder is combined. A first sealing means for sandwiching and bonding both edge portions of the packaging film from both sides; a transporting means for sending the packaging film wound around the bag-making cylinder downward; and a bag-making cylinder provided below the bag-making cylinder. A second sealing means for sandwiching and bonding the packaging film sent downward from both sides, and a weighing means provided in the bag-making cylinder for weighing the article to be packaged and dropping it from the lower outlet. In the packaging film in which both edge portions are bonded with one sealing means and the lower side is closed with the second sealing means, the article to be packaged is dropped from the weighing means, discharged from the bag-making cylinder, and filled. Packaging box filled with the package The upper Lum by clogging in the second sealing means is to form a pillow-shaped package.
[0003]
In the packaging apparatus, the bag-making cylinder is formed in a cylindrical shape with a uniform outer diameter in order to regulate the outer dimension of the final package, and the inner diameter is also uniform.
[0004]
[Problems to be solved by the invention]
When the bag-making cylinder has a uniform inner diameter as described above, if the article to be packaged is a powder, granule or a substance containing a large amount of water, the article to be packaged dropped from the lower outlet of the measuring means It may adhere to the inner peripheral surface of the cylinder.
As a result, there arises a problem that the amount of an object to be packed filled in the package varies slightly.
As a further serious problem, the packaged items that have adhered to the inner peripheral surface of the bag-making cylinder as described above cannot be controlled in the timing of dropping, and therefore, the timing immediately before bonding by the second sealing means. If it falls, the object to be packaged is sandwiched between the bonded parts and bonded, which may cause a sealing failure in the bonded parts.
[0005]
Therefore, the object of the present invention is to prevent the packaging material dropped from the lower outlet portion of the weighing means from adhering to the inner peripheral surface of the bag-making cylinder, thereby ensuring the accuracy of the filling amount of the packaging material. The present invention is to provide a packaging device that can increase the sealing and prevent the occurrence of poor sealing.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the packaging device according to claim 1 of the present invention is arranged in a vertical direction, and is a cylindrical product that is wound around the outer peripheral side with the strip-shaped packaging film aligned at both ends. A first sealing means for adhering both ends of the packaging film aligned with the bag cylinder from both sides, and a transfer means for sending the packaging film wound around the bag-making cylinder downward; A second sealing means provided below the bag-making cylinder, and sandwiching and bonding a packaging film sent downward from the bag-making cylinder from both sides; A measuring means for dropping from the lower outlet portion, and in the packaging film in which both end edges are sealed with the first sealing means and the lower side is closed with the second sealing means, Dropping from the weighing means After filling was drained from the bag tube, the packaging apparatus for forming a package of pillow by closed with the second seal means an upper packaging film該被package is filled, the bag tube is the An outer tube portion that is wrapped around the outer peripheral side of the packaging film with both end edges aligned, the weighing means is provided on the inner circumferential side, and a large lower portion is provided on the inner circumferential surface below the lower outlet portion of the weighing means. It has a double structure having an inner cylinder part having a tapered surface with a diameter, and is provided with an excitation means for applying vibration only to the inner cylinder part .
[0009]
A packaging device according to claim 2 of the present invention is a cylindrical bag-making cylinder that is arranged along the vertical direction and is wound around the outer peripheral side with the belt-shaped packaging film aligned at both ends. A first sealing means for adhering both ends of the packaging film aligned with the bag cylinder from both sides, a transfer means for sending the packaging film wound around the bag-making cylinder downward, and a lower part of the bag-making cylinder And a second sealing means for sandwiching and bonding the packaging film sent downward from the bag-making cylinder from both sides, and provided in the bag-making cylinder, weighing the packaged items and dropping from the lower outlet portion A weighing means for allowing the packaged article to fall from the weighing means into a packaging film in which both end edges are sealed by the first sealing means and the lower side is closed by the second sealing means. Eject from the bag-making cylinder and fill After that, in the packaging apparatus for forming the pillow type package by closing the upper side of the packaging film filled with the packaged object with the second sealing means, the bag making is provided below the lower outlet portion of the lightweight means. A taper portion having a large lower diameter is formed on the inner peripheral surface of the cylinder, and a hole portion is provided in the taper surface, and jetting means for jetting gas from the hole portion is provided .
[0010]
A packaging device according to a third aspect of the present invention is characterized in that, in addition to the one according to the first or second aspect, a Teflon (registered trademark) coating is applied to the tapered surface.
[0011]
[Action]
According to the packaging device of the first aspect of the present invention, a lower large-diameter tapered surface is formed on the inner peripheral surface of the bag-making cylinder below the lower outlet portion of the weighing means. The inner peripheral surface of the bag-making cylinder will be present on the outer side with respect to the falling direction of the article to be packaged falling from the outlet portion, and thus the article to be packaged will not easily adhere to the inner peripheral surface. Moreover, even if it adheres, since the taper surface is inclined so as to face downward, the adhesion force is reduced, and thus it is easy to fall.
[0012]
Furthermore, the bag-making cylinder includes an outer cylinder part wound around the outer peripheral side with the packaging film aligned at both ends, and an inner cylinder part provided with a measuring means on the inner peripheral side and having a tapered surface. Since it has a double structure, it is possible to vibrate only the inner cylinder, for example.
[0013]
In addition, even if the article to be packaged adheres to the inner peripheral surface of the inner cylinder part, the article to be packaged is dropped by applying vibration to the inner cylinder part by the vibration means. Moreover, since the outer cylinder part is not vibrated by the vibration means, the belt-shaped packaging film is wound around the outer cylinder part of the bag-making cylinder in a state where both edge parts are aligned, and both edge parts of the combined packaging film The vibration does not adversely affect the bag-making operation in which the first sealing means is sandwiched and bonded from both sides.
[0014]
According to the packaging device of the second aspect of the present invention, even if the article to be packaged adheres to the inner peripheral surface of the inner cylinder portion, the gas is ejected from the hole provided in the tapered surface by the ejection means. By blowing, the article to be packaged is blown off and dropped.
[0015]
According to the packaging device of the third aspect of the present invention, since the Teflon (registered trademark) coating is applied to the taper surface of the inner cylinder portion, even if an object to be packaged adheres to the taper surface. The wearing force is small, so it is easy to fall.
[0016]
【Example】
A packaging device according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a schematic configuration of a packaging apparatus according to the present embodiment. The packaging apparatus is a so-called vertical type that forms a pillow-type package by wrapping a package while feeding a packaging film in a vertical direction. A pillow packaging device.
[0017]
The packaging device includes a heat-weldable packaging film 11 having a band shape with a base end wound in a roll shape, a film feeding roller 12 that pulls out and feeds the packaging film 11, and packaging by the film feeding roller 12. A cylindrical bag-making tube 13 that is disposed along the vertical direction on the feeding side of the film 11 and wound around the outer peripheral side with the packaging film 11 aligned at both ends, and packaging in the bag-making tube 13 Moving suction that feeds the packaging film 11 downward by moving the guide film 10 downward while adsorbing the guide film 10 that guides the winding of the film 11 and the packaging film 11 that is provided in a vertically movable manner and wound around the bag-making cylinder 13 Container (transfer means) 14. Here, what is indicated by reference numeral 15 in FIG. 1 is an adjustment roller for adjusting the tension or position of the packaging film 11, and what is indicated by reference numeral 16 is a photoelectric tube device for detecting the presence or absence of the packaging film 11.
[0018]
Here, in the state where the central portion of the packaging film 11 is brought into contact with one side of the bag-making cylinder 13 by the guide of the guide plate 10 and both edge portions of the packaging film 11 are turned to the back side, the packaging film 11 is When sent downward, the packaging film 11 is wound around the outer peripheral side of the bag-making cylinder 13 with the both end edges aligned together.
[0019]
A center sealer (first seal means) 18 is provided along the vertical direction on the side opposite to the supply side of the packaging film 11 of the bag-making cylinder 13. The center sealer 18 moves horizontally to the bag-making cylinder 13 side, so that the packaging film 11 moves on the seal part 13a with a seal part (first sealing means) 13a along the vertical direction of the bag-making cylinder 13. The two edge portions are sandwiched from both sides and thermally bonded.
[0020]
A pair of end seal cutters (second seal means) 20 extending in the horizontal direction are provided below the bag-making cylinder 13 so as to be positioned close to each other in the vertical direction so that only the horizontal close proximity and separation movement is possible. . Although not shown, the end seal cutter 20 is provided with a seal portion at the top and bottom and a cutter at the center. The end seal cutter 20 is sandwiched from both sides of the packaging film 11 that is sent downward from the bag-making cylinder 13 from two sides. While being thermally bonded by the seal portion, the portion between them is cut with a cutter.
Below the end seal cutter 20, a delivery discharge conveyor 21 is provided.
[0021]
As shown in FIG. 2, a screw-shaped auger (measuring means) 23 is fitted in a fixed position at an intermediate predetermined position in the axial direction inside the bag-making cylinder 13 so as to be rotatable. The auger 23 is driven by a connected driving device 23a, and causes the article to be packaged supplied from the upper part of the bag making cylinder 13 to drop from the lower outlet part 24 by a predetermined amount corresponding to the rotation amount. ing.
[0022]
In this embodiment, on the inner peripheral surface of the bag making cylinder 13 below the lower outlet portion 24 of the auger 23, a lower large diameter taper surface 13b that expands from the lower outlet portion 24 at a certain angle is used for bag making. It is formed up to the lower end of the tube 13. In addition, on the inner peripheral surface of the bag-making cylinder 13 above the auger 23, an upper large-diameter receiving taper surface 13c that is reduced in diameter by a certain angle from the upper end portion is formed.
In addition, since the bag making cylinder 13 regulates the outer dimension of the final package 26, the outer diameter is made uniform.
[0023]
In the present embodiment having such a configuration, the packaging film 11 fed out by the film feeding roller 12 is wound around the bag-making cylinder 13 in a state where both edge portions are guided and guided by the guide plate 10. Both edge portions are thermally bonded to each other by the sealer 18 and the seal portion 13 a of the bag-making cylinder 13 to form a cylindrical shape, and are sent downward by the moving suction device 14. The packaging film 11 thus formed into a cylindrical shape is further thermally fed by the end seal cutter 20 and closed at the lower portion, and is further fed downward by a predetermined amount by the moving suction device 14. In this state, the auger 23 of the bag-making cylinder 13 is rotated by a predetermined amount by the driving device 23 a, so that a predetermined amount of an article to be packaged is dropped from the lower outlet portion 24 and discharged from the lower end opening of the bag-making cylinder 13. Thus, the lower portion of the packaging film 11 is filled.
[0024]
Next, when the end seal cutter 20 comes close to each other, the upper side of the portion of the packaging film 11 that is filled with the object to be packaged is thermally bonded to each other, and further, the upper side is cut, and further from the cut portion. The upper sides are also closed by thermal bonding. As a result, the pillow-type package 26 after the article to be packaged is dropped and transported to the discharge conveyor 21 and the lower portion of the packaging film 11 for the next packaging is closed. In this way, the package 26 is sequentially formed.
[0025]
In this embodiment, since the lower large diameter tapered surface 13b is formed on the inner peripheral surface of the bag-making cylinder 13 below the lower outlet portion 24 of the auger 23, the lower outlet portion 24 of the auger 23 is formed. The lower inner peripheral surface of the bag-making cylinder 13, that is, the tapered surface 13 b, exists on the outer side with respect to the falling direction of the package to be further dropped, so that the package is less likely to adhere to the tapered surface 13 b. Become. Thus, it is possible to prevent the article to be package dropped from the lower outlet portion 24 of the auger 23 from adhering to the inner peripheral surface below the auger 23 of the bag-making tube 13, that is, the tapered surface 13b. Even when packaging materials that easily adhere to the wall surface, such as powder, granules, or substances with high moisture content, it is possible to increase the accuracy of the filling amount of the package and prevent the occurrence of poor seals. can do. Even if it adheres, the taper surface 13b is inclined so as to be directed downward, so that the adhesion force is reduced, and thus it is easy to fall. Therefore, it is possible to further increase the accuracy of the filling amount of the packaged object and to more effectively prevent the occurrence of a sealing failure.
[0026]
In addition, as an example of the packaged material such as the above-described powder, granules, or a substance having a high moisture content, there is a so-called cultivation bed or the like that is propagated in sawdust moistened with fungi such as potatoes.
Here, when 3 kg of the sawdust is prepared and gusset packaging of 200 W × 120 × 400 mm is used, conventionally, the sawdust adheres to the bag-making cylinder during long-time operation, and the attached sawdust falls without interruption. Sawdust was caught in the seal portion by the cutter, resulting in poor sealing. However, such sealing failure due to the biting of sawdust could be eliminated.
[0027]
In addition, the said Example can also be changed as follows.
As shown in FIG. 3, the bag-making cylinder 13 is wound around the outer peripheral side with the packaging film 11 (not shown in FIG. 3) aligned at both ends, and a seal portion 13 a (not shown in FIG. 3). And an inner cylinder portion 29 provided with an auger 23 on the inner peripheral side and formed with a tapered surface 13b and a receiving tapered surface 13c. Furthermore, a vibration device (vibration means) 32 that supports the outer cylinder portion 28 independently of the inner cylinder portion 29 and applies vibration only to the inner cylinder portion 29 is provided.
[0028]
If comprised in this way, even if a to-be-packaged item adheres to the internal peripheral surface below the auger 23 of the inner cylinder part 29, ie, the taper surface 13b, it vibrates to the inner cylinder part 29 with the vibration apparatus 32. Since the object to be packaged can be dropped by adding, the accuracy of the filling amount of the object to be packaged can be further increased, and the occurrence of poor sealing can be more effectively prevented. In addition, since the outer tube portion 28 is supported independently of the inner tube portion 29 and is not vibrated by the vibration device 32, the belt-shaped packaging film 11 is in a state in which both edge portions are aligned. It is possible to prevent the vibration from adversely affecting the bag making operation in which both ends of the wrapped packaging film 11 wound around the outer tube portion 28 are sandwiched and bonded from both sides by the center sealer 18 and the seal portion 13a.
[0029]
In addition, as shown in FIG. 4, a gas flow path 34 is provided in the bag-making cylinder 13, and a large number of holes 31 that open only from the gas flow path 34 toward the tapered surface 13 b are provided. 34 is provided with a gas supply device (ejection means) 33 for introducing a gas such as air or N ₂ gas and ejecting the gas from the hole 31.
[0030]
If comprised in this way, even if a to-be-packaged item adheres to the internal peripheral surface below the auger 23 of the bag making cylinder 13, ie, the taper surface 13b, it will be provided in the taper surface 13b by the gas supply apparatus 33. By ejecting the gas from the hole 31, the package can be blown off and dropped. Therefore, it is possible to further increase the accuracy of the filling amount of the packaged object and to more effectively prevent the occurrence of a sealing failure.
Here, the gas ejection from the hole 31 by the gas supply device 33 is intermittently performed so as to stop immediately before the packaging film 11 is thermally bonded by the end seal cutter 20.
[0031]
The bag-making cylinder 13 may be constituted by an inner cylinder part 29 and an outer cylinder part 28, and the inner cylinder part 29 may be vibrated by the vibration device 32 and gas may be ejected from the inner cylinder part 29. In this case, while supporting the inner cylinder part 29 independently with respect to the outer cylinder part 28, the inner cylinder part 29 is provided with a hole 31 for opening the gas flow path 34 and the gas flow path 34 toward the tapered surface 13b. What is necessary is just to connect the gas supply apparatus 33 to the gas flow path 34 of the inner cylinder part 29. FIG.
[0032]
In addition, it is also possible to apply Teflon coating to the inner peripheral surface below the auger 23, that is, the tapered surface 13b. With this configuration, even if an object to be packaged adheres to the tapered surface 13b. Since the adhesive force is small and it is easy to drop, the accuracy of the filling amount of the package can be further increased, and the occurrence of poor sealing can be more effectively prevented.
[0033]
Furthermore, in the above-described embodiment, the example in which the package is measured and supplied using the auger 23 has been described as an example. However, a partition plate that enters and exits in the direction perpendicular to the axial direction is provided inside the bag-making cylinder 13. It is possible to employ a so-called cut-off type device that measures and supplies an article to be packaged by entering and exiting the partition plate, and other various weighing and supply type devices. In any case, the tapered surface 13b is provided below the lower outlet portion serving as an outlet when the article to be packaged is dropped onto the packaging film 11.
[0034]
【The invention's effect】
As described above in detail, according to the packaging device of the first aspect of the present invention, a tapered surface having a large lower diameter is formed on the inner peripheral surface of the bag-making cylinder below the lower outlet portion of the weighing means. Therefore, the inner peripheral surface of the bag-making cylinder is present on the outer side with respect to the dropping direction of the article to be packaged falling from the lower outlet portion of the weighing means, and thus the article to be packaged adheres to the inner circumferential surface. It becomes difficult. Thus, the accuracy of the filling amount of the packaged object can be increased by preventing the packaged article dropped from the lower outlet part of the weighing means from adhering to the inner peripheral surface of the bag-making cylinder. And the occurrence of poor sealing can be prevented. Moreover, even if it adheres, since the taper surface is inclined so as to face downward, the adhesion force is reduced, and thus it is easy to fall. Therefore, it is possible to further increase the accuracy of the filling amount of the packaged object and to more effectively prevent the occurrence of a sealing failure.
[0035]
In addition, the bag-making cylinder includes an outer cylinder portion wound around the outer peripheral side with the packaging film having both end edges aligned, and an inner cylinder portion provided with a measuring means on the inner peripheral side and having a tapered surface. Since it has a double structure, it is possible to vibrate only the inner cylinder, for example.
[0036]
Furthermore, even if the article to be packaged adheres to the inner peripheral surface of the inner cylinder part, the article to be packaged is dropped by applying vibration to the inner cylinder part by the vibration means. Therefore, it is possible to further increase the accuracy of the filling amount of the packaged object and to more effectively prevent the occurrence of a sealing failure. Moreover, since the outer cylinder part is not vibrated by the vibration means, the belt-shaped packaging film is wound around the outer cylinder part of the bag-making cylinder in a state where both edge parts are aligned, and both edge parts of the combined packaging film The vibration does not adversely affect the bag-making operation in which the first sealing means is sandwiched and bonded from both sides.
[0037]
According to the packaging device of the second aspect of the present invention, even if the article to be packaged adheres to the inner peripheral surface of the inner cylinder portion, the gas is ejected from the hole provided in the tapered surface by the ejection means. By blowing, the article to be packaged is blown off and dropped. Therefore, it is possible to further increase the accuracy of the filling amount of the packaged object and to more effectively prevent the occurrence of a sealing failure.
[0038]
According to the packaging device of the third aspect of the present invention, since the Teflon (registered trademark) coating is applied to the taper surface of the inner cylinder portion, even if an object to be packaged adheres to the taper surface. The wearing force is small, so it is easy to fall. Therefore, it is possible to further increase the accuracy of the filling amount of the packaged object and to more effectively prevent the occurrence of a sealing failure.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a packaging device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a bag making cylinder of a packaging device according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a bag making cylinder of a packaging device according to another embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a bag making cylinder of a packaging device according to still another embodiment of the present invention.
[Explanation of symbols]
11 Packaging film 13 Bag making cylinder 13a Sealing part (first sealing means)
13b Tapered surface 14 Moving suction device (transfer means)
18 Center sealer (first sealing means)
20 End seal cutter (second seal means)
23 auger (measuring means)
24 Lower outlet part 26 Package 28 Outer cylinder part 29 Inner cylinder part 31 Hole part 32 Excitation apparatus (excitation means)
33 Gas supply device (spouting means)

Claims

Cylindrical bag-making cylinders that are arranged along the vertical direction and are wound around the outer peripheral side in a state in which the strip-shaped packaging film is aligned with both edge portions, and both edge portions of the packaging film that are aligned with the bag-making cylinder A first sealing means for adhering each other from both sides, a transfer means for sending the packaging film wound around the bag-making cylinder downward, and a lower part of the bag-making cylinder, which is sent downward from the bag-making cylinder A second sealing means for sandwiching and bonding the packaged film from both sides; and a weighing means provided in the bag-making cylinder for weighing the packaged article and dropping it from the lower outlet portion, the first seal In the packaging film in which both edge portions are sealed with each other and the lower side is closed with the second sealing means, the article to be packaged is dropped from the measuring means and discharged from the bag-making cylinder, and then filled. Package filled with the package A packaging apparatus for forming a package of pillow by closed with the second seal means an upper film, the bag tube is the packaging film is an outer tubular portion which is wound around the outer peripheral side in a state of aligning the edges edge And an inner cylinder portion provided with the measuring means on the inner peripheral side and having a tapered surface with a large lower diameter formed on the inner peripheral surface below the lower outlet portion of the measuring means. A packaging device comprising vibration means for applying vibration only to the inner tube portion .

Cylindrical bag-making cylinders that are arranged along the vertical direction and are wound around the outer peripheral side in a state in which the strip-shaped packaging film is aligned with both edge portions, and both edge portions of the packaging film that are aligned with the bag-making cylinder A first sealing means for adhering each other from both sides, a transfer means for sending the packaging film wound around the bag-making cylinder downward, and a lower part of the bag-making cylinder, which is sent downward from the bag-making cylinder A second sealing means for sandwiching and bonding the packaged film from both sides; and a weighing means provided in the bag-making cylinder for weighing the packaged article and dropping it from the lower outlet portion, the first seal In the packaging film in which both edge portions are sealed with each other and the lower side is closed with the second sealing means, the article to be packaged is dropped from the measuring means and discharged from the bag-making cylinder, and then filled. Package filled with the package In the packaging apparatus in which the upper side of the film is closed by the second sealing means to form a pillow type package, a taper having a large lower diameter is formed on the inner peripheral surface of the bag-making cylinder below the lower outlet portion of the lightweight means. A packaging device comprising a surface, a hole in the tapered surface, and an ejection means for ejecting gas from the hole .

The packaging apparatus according to claim 1 or 2, wherein the tapered surface is coated with Teflon (registered trademark) .