JP4227698B2

JP4227698B2 - Packaging box box making apparatus and packaging box box making method

Info

Publication number: JP4227698B2
Application number: JP12267499A
Authority: JP
Inventors: 誠松田; 健一郎広部; 徹夫村上; 比登志落合
Original assignee: Oji Holdings Corp; Oji Paper Co Ltd
Current assignee: New Oji Paper Co Ltd; Oji Holdings Corp
Priority date: 1999-04-28
Filing date: 1999-04-28
Publication date: 2009-02-18
Anticipated expiration: 2019-04-28
Also published as: JP2000313406A

Description

【０００１】
【発明の属する技術分野】
本発明は、上方からの圧力や内部からの圧力に対する強度を向上させるための補強部材を箱体の内部に備えた包装箱を製造する包装箱の製函装置及び包装箱の製函方法に関する。
【０００２】
【従来の技術】
例えば、液体や粉体等の流動性のある物品は、ブリキ缶等の金属製容器に収納するのが主流であるが、金属製容器は、重量が重く、廃棄処理が面倒であるという欠点があることから、昨今においては、紙器を利用した所謂「バックインボックス」と称する紙製容器が開発され、実用に共されている。
【０００３】
バックインボックスは、段ボール箱等の紙器を外装として用い、この内側にポリエチレン、ポロプロピレン、またはＰＥＴフィルム等の軟質のプラスチック製バッグを収納した構成を有するものであり、このプラスチック製バック内部に、飲料水や酒類、油類等の液体を収納する。このようなバックインボックスは、多数段に積み重ねて保管或いは輸送することが多々あり、バックインボックスを多数段に積み重ねた場合には、下方となるバックインボックスの側面部に多くの荷重が加えられることになり、荷重に耐えられずに潰れてしまうことがある。また、輸送途中等に内部に袋詰めされた液体の圧力が箱体の内側面に作用して、プラスチック製のバッグ内の液体が横方向に膨れてしまい、所謂「胴膨れ」の状態となってしまうという問題が発生していた。
【０００４】
そこで、上記の問題を解決する方法として従来より、例えば、特開平８−２２４８０６号公報に開示された如くのバックインボックス及びその製造装置が開示されている。図１８、図１９は、この従来例に記載された、バックインボックスの構成を示す説明図であり、図１８は展開図、図１９は組立図をそれぞれ示している。
【０００５】
図１８に示すように、このバックインボックスは、複数の罫線、切り欠きを有する１枚のブランクを適宜折り曲げることにより製作することが可能であり、図１９に示すように、箱体の内側に８角形の筒体が形成されるので、箱体の４つのコーナー部が補強され、外圧、内圧共に大きな荷重を支えることができる。
【０００６】
ところが、上記した従来におけるバックインボックスでは、図１８に示すように、極めて複雑なブランクを必要とするので、ブランクを製造するまでの工程が極めて面倒である。
また、折り曲げる個所が多く、従って、ブランクを折り曲げて最終的にバックインボックスを形成するまでに多くの折り曲げ工程、糊付け工程が必要となり、生産性が悪いという問題が発生していた。
【０００７】
【発明が解決しようとする課題】
上述したように、従来におけるバックインボックスは、外装となる直方体または立方体の箱体の内部に、八角柱の筒状補強部材が形成されるので、箱体の側面部が二重構造となり、これにより上下方向に加えられる圧力に対する強度を強固なものとすることができる。また、移動中等に内部の袋詰めされた液体の圧力が箱体の側面にかかって胴膨れする場合も、八角柱の筒状補強部材が胴膨れを防止する方向に作用するので、内圧に対しても強固な構造となっている。
【０００８】
しかしながら、従来のバックインボックスの製造においては、箱体と筒状補強部材が１枚の段ボールシートから切り出して製造されていたので、組み立て工程が複雑であるだけでなく、一般的な段ボール箱用の従来の組立装置（製函装置）を利用することが出来なかった。
【０００９】
また、箱体と筒状補強部材が一体構造であるため、箱の寸法が大きくなると、箱体の材料の寸法が大きくなり、製造が難しくなるという問題があった。
また、従来の箱体と筒状補強部材が一体構造のバックインボックスの製造方法においては、筒状補強部材部分に糊付けした後、糊付けした部材を箱に擦らせて組み立てる工程が存在したため、糊が擦り取られて（糊欠きと称する）、接着強度が充分でないという問題もあった。
【００１０】
本発明はこれらの問題を解決するものであり、補強部材を有する段ボール箱の製造工程を簡素化して、従来の一般的な段ボール箱の組立装置（製函装置）もそのまま利用できると共に、箱体の材料の製造を容易にし、且つ、糊欠き等の品質上の問題も解決することを目的とする。
【００１１】
本発明者等は、箱体と筒状補強部材を別々の段ボール部材から製造して、別工程で組み立て、更に最終的形状とは異なる形状に筒状補強部材を形成して、上部を開口した箱体に挿入し、挿入後に該補強部材を最終形状にする等の構成を用いることにより本発明を完成するに至った。
【００１２】
【課題を解決するための手段】
上記目的を達成するため、本発明の製函装置は、直方体または立方体の箱体内部に筒状補強部材を設置して強度を向上させた包装箱を製造する製函装置において、前記補強部材形成用のインナーブランクを多数蓄積するマガジンと、前記マガジンから供給されるインナーブランクを折り曲げ加工して筒状補強部材を形成する折り曲げ手段と、前記筒状補強部材の外面所望部位に、糊を塗布する糊付け手段と、一面が開口状態の前記箱体を保持する保持手段と、前記糊付けされた筒状補強部材を前記保持手段にて保持された箱体の内部に挿入すると共に、該筒状補強部材を前記箱体の内面に圧接固定する補強部材固定手段と、を有することが特徴である。
【００１３】
また、本発明の製函装置は、直方体または立方体の箱体内部に八角柱の筒状補強部材を設置して、強度を向上させた包装箱を製造する製函装置において、前記補強部材形成用のインナーブランクを多数蓄積するマガジンと、前記マガジンから供給されるインナーブランクを折り曲げ加工して断面が幅付き十字形状となる筒状補強部材を形成する折り曲げ手段と、前記筒状補強部材の、外側４面の外面に、糊を塗布する糊付け手段と、上面が開口状態の前記箱体を保持する保持手段と、前記糊付けされた筒状補強部材を前記保持手段にて保持された箱体の内部に挿入すると共に、該筒状補強部材の外側４面を前記箱体の内面に圧接し、前記幅付き十字形状の断面を八角形状の断面に変形させて固定する補強部材固定手段と、を有することを特徴とする。
【００１４】
請求項１に記載の製函装置は、直方体または立方体の箱体内部に八角柱の筒状補強部材を設置して、強度を向上させた包装箱を製造する製函装置において、前記筒状補強部材は第１のインナーブランク及び第２のインナーブランクから成り、前記第１のインナーブランクを多数蓄積する第１のマガジン、及び、前記第２のインナーブランクを多数蓄積する第２のマガジンと、４つの側面にそれぞれ押圧板が配置され、且つ、上下方向に昇降動が可能なマンドレルと、前記第１のマガジンから供給される第１のインナーブランクを、前記マンドレルの第１の押圧板に押圧し、且つ、この第１のインナーブランクの両側部を、前記マンドレルの第１の押圧板と隣接する第３の押圧板及び第４の押圧板の側辺に押圧して第１のインナーブランクにコ字状突起を形成し、更に、該第１のインナーブランクの両端部を前記第３の押圧板及び第４の押圧板のエッジ部に押しつけてこの両端部を略直角に折り曲げる第１の折り曲げ手段と、前記第２のマガジンから供給される第２のインナーブランクを、前記マンドレルの第１の押圧板の背面側となる第２の押圧板に押圧し、且つ、この第２のインナーブランクの両側部を、前記マンドレルの第２の押圧板と隣接する第３の押圧板及び第４の押圧板の側辺に押圧して第２のインナーブランクにコ字状突起を形成し、更に、該第２のインナーブランクの両端部を前記第３の押圧板及び第４の押圧板のエッジ部に押しつけてこの両端部を略直角に折り曲げる第２の折り曲げ手段と、前記第１のインナーブランク及び第２のインナーブランクの折り曲げられた一端を第３の押圧板に押圧して、第１のインナーブランクの一端と第２のインナーブランクの一端とを連結する第３の折り曲げ手段と、前記第１のインナーブランク及び第２のインナーブランクの折り曲げられた他端を第４の押圧板に押圧して、第１のインナーブランクの他端と第４のインナーブランクの他端とを連結する第４の折り曲げ手段と、を有し、前記第１〜第４の折り曲げ手段で、断面が幅付き十字形状の筒状補強部材を形成し、前記筒状補強部材の、外側４面の外面に糊付けする糊付け手段と、上面が開口状態の前記箱体を保持する保持手段と、前記マンドレルに搭載され、前記糊付けされた筒状補強部材を前記保持手段に保持された箱体の内部に挿入後、前記第１〜第４の押圧板を外側に押圧して、前記筒状補強部材の外側４側面を箱体内面に圧接する圧接手段と、を具備したことを特徴とする。
【００１５】
請求項２に記載の製函装置は、直方体または立方体の箱体内部に八角柱の筒状補強部材を設置して、強度を向上させた包装箱を製造する製函装置において、前記筒状補強部材は、２枚のインナーブランクから成り、前記インナーブランクを多数蓄積するマガジンと、前記マガジンに蓄積されたインナーブランクを、互いに対向する第１のインナーブランク供給部及び第２のインナーブランク供給部に振り分ける振り分け手段と、４つの側面にそれぞれ押圧板が配置され、且つ、上下方向に昇降動が可能なマンドレルと、前記第１のマガジンから供給される第１のインナーブランクを、前記マンドレルの第１の押圧板に押圧し、且つ、この第１のインナーブランクの両側部を、前記マンドレルの第１の押圧板と隣接する第３の押圧板及び第４の押圧板の側辺に押圧して第１のインナーブランクにコ字状突起を形成し、更に、該第１のインナーブランクの両端部を前記第３の押圧板及び第４の押圧板のエッジ部に押しつけてこの両端部を略直角に折り曲げる第１の折り曲げ手段と、前記第２のマガジンから供給される第２のインナーブランクを、前記マンドレルの第１の押圧板の背面側となる第２の押圧板に押圧し、且つ、この第２のインナーブランクの両側部を、前記マンドレルの第２の押圧板と隣接する第３の押圧板及び第４の押圧板の側辺に押圧して第２のインナーブランクにコ字状突起を形成し、更に、該第２のインナーブランクの両端部を前記第３の押圧板及び第４の押圧板のエッジ部に押しつけてこの両端部を略直角に折り曲げる第２の折り曲げ手段と、前記第１のインナーブランク及び第２のインナーブランクの折り曲げられた一端を第３の押圧板に押圧して、第１のインナーブランクの一端と第２のインナーブランクの一端とを連結する第３の折り曲げ手段と、前記第１のインナーブランク及び第２のインナーブランクの折り曲げられた他端を第４の押圧板に押圧して、第１のインナーブランクの他端と第２のインナーブランクの他端とを連結する第４の折り曲げ手段と、を有し、前記第１〜第４の折り曲げ手段で、断面が幅付き十字形状の筒状補強部材を形成し、前記筒状補強部材の、外側４面の外面に糊付けする糊付け手段と、上面が開口状態の前記箱体を保持する保持手段と、前記マンドレルに搭載され、前記糊付けされた筒状補強部材を前記保持手段に保持された箱体の内部に挿入後、前記第１〜第４の押圧板を外側に押圧して、前記筒状補強部材の外側４側面を箱体内面に圧接する圧接手段と、を具備したことを特徴とする。
【００１６】
請求項３に記載の製函装置は、前記第１〜第４の押圧板は、押圧された第１のインナーブランク及び第２のインナーブランクを吸引して固定する吸引手段を具備したことを特徴とする。請求項４に記載の製函装置は、前記第１〜第４の折り曲げ手段は、前記箱体の上方に配設され、前記糊付け手段は、前記筒状補強部材がマンドレルと共に箱体内部に下降する途中に、前記補強部材の外側４面の外面に糊を吹き付けることを特徴とする。
【００１７】
請求項５に記載の製函装置は、前記第３の折り曲げ手段は前記第３の押圧板側にインナーブランクを押し付けるための押圧金具を有し、且つ、前記第４の折り曲げ手段は、前記第４の押圧板側にインナーブランクを押し付けるための押圧金具を有し、前記各押圧金具は、押圧面にフィンが形成されたことを特徴とする。
【００１８】
請求項６に記載の製函装置は、前記保持手段は、前記第１〜第４の押圧板による押圧力を受けるための押さえ板を具備したことを特徴とする。請求項７に記載の製函装置は、前記箱体を、上流側から前記マンドレルの下降部位に搬送する箱体供給用コンベヤ、及び筒状補強部材が挿入された後の箱体を、下流側に送り出す箱体送り出し用コンベヤを具備したことを特徴とする。
【００１９】
本発明の製函方法は、直方体または立方体の箱体内部に筒状補強部材を設置して、強度を向上させた包装箱を製造する製函方法において、インナーブランクを折り曲げて、断面が幅付き十字形状となる筒状の補強部材を形成するステップと、前記筒状補強部材の外側４面の外面に、接着用の糊を塗布するステップと、前記箱体を保持するステップと、前記糊付けされた筒状補強部材を、前記保持された箱体内部に挿入した後、該筒状補強部材の外側４面の内側から前記箱体内面に向けて押しつけることにより、当該補強部材を前記箱体に圧着固定するステップと、を有することを特徴とする。
【００２０】
請求項８に記載の製函方法は、直方体または立方体の箱体内部に八角柱の筒状補強部材を設置して、強度を向上させた包装箱を製造する製函方法において、インナーブランクを多数蓄積するステップと、前記筒状補強部材を構成する第１のインナーブランクと第２のインナーブランクをそれぞれ供給するステップと、第１のインナーブランク及び第２のインナーブランクの略中央部にそれぞれコ字状突起を形成するステップと、前記コ字状突起が形成された第１のインナーブランク及び第２のインナーブランクの端部をそれぞれ略直角に折り曲げるステップと、前記端部が略直角に折り曲げられた第１のインナーブランク及び第２のインナーブランクの端部どうしを連結して断面が幅付き十字形状の筒状補強部材を形成するステップと、前記筒状補強部材の、外側４面の外面に、糊を塗布するステップと、前記箱体を上面開口状態で保持するステップと、前記糊付けされた筒状補強部材を、前記保持された箱体内部に挿入した後、該筒状補強部材の外側４面の内側から前記箱体内面に向けて押しつけることにより、当該筒状補強部材を前記箱体内部に圧着し、幅付き十字形状の断面を八角形状の断面に変形して固定するステップと、を有することを特徴とする。
【００２１】
上述の如く構成された本発明によれば、インナーブランクを折り曲げ加工して筒状補強部材を作成し、該筒状補強部材を箱体内に挿入し、且つ糊付けされた接触面にて接着することにより、筒状補強部材を具備した箱体を製造する。これにより、極めて簡単且つ確実に筒状補強部材を具備した箱体を製造することができる。
【００２２】
また、本発明の包装箱の製函装置では、一般的に使用されている箱体（例えば、Ａ１型段ボール箱）の内部に筒状補強部材を挿入して、箱体を製造しているので、既存の箱体製造装置に連結すれば、容易に筒状補強部材を具備した包装箱を作成することができる。
【００２３】
更に、断面が幅付き十字形状を成す筒状補強部材を作成し、この筒状補強部材の外側４面（十字形状の左右上下の面）の外側に糊付けして箱体の内部に挿入してから八角柱状に押し拡げて箱体の内面に接着する。このため、糊付けされた筒状補強部材が、組立途中に箱体の内面で擦れることを防止することができる。
本発明における箱体とその補強部材は、段ボールシート等の紙を主体とした材料から構成されており、合成樹脂等を塗布したり含有して耐水性を付与した紙も用いられる。
【００２４】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。図１は、本発明が適用された包装箱の製函装置の一実施形態の構成を示す立面図、図２は図１に示した立面図における「Ａ−Ａ′」矢視図である。図２に示すように、この製函装置１は、上段、中段、下段の３段構成とされており、このうち、上段は、筒状補強部材を形成するための材料となるインナーブランクを供給するインナーブランク供給部１００とされ、中段は、インナーブランク供給部１００から与えられたインナーブランクを折り曲げて断面が幅付き十字形状の筒状補強部材を作成する折り曲げ部２００とされ、そして、下段は、上流側から供給される上部開口段ボール箱を保持しその内部に、前記折り曲げ部２００で形成され、糊付けされた筒状補強部材を挿入し、且つ、この筒状補強部材を押し広げ八角柱状にして、この段ボール箱の内面に接着固定する処理を行う筒状補強部材挿入固定部３００とされている。
【００２５】
インナーブランク供給部１００は、図１に示すように、中心から左右に対称的に配置された２個のマガジン２ａ，２ｂを有しており、各マガジン２ａ，２ｂはそれぞれ、中心方向に傾斜したシート受け台３ａ，３ｂ、及び、このシート受け台３ａ，３ｂ上に載置された多数のインナーブランク４を１枚づつ取り出して、下方の折り曲げ部２００へと供給するためのシートキッカー５ａ，５ｂを具備している。
【００２６】
図３は、折り曲げ部２００の構成を示す斜視図であり、同図に示すように、折り曲げ部２００の中心部にはマンドレル６が設置されている。マンドレル６は、上下方向に移動が可能な本体７と、該本体７の４つの側面７ａ〜７ｄにそれぞれ配設される押圧板８ａ〜８ｄを具備している。
【００２７】
また、マンドレル６の、押圧板８ａと対向する部位には、第１の折り曲げ機９ａが配設され、押圧板８ｂと対向する部位には、第２の折り曲げ機９ｂが配設され、押圧板８ｃと対向する部位には第３の折り曲げ機１０ａが配設され、更に、押圧板８ｄと対向する部位には第４の折り曲げ機１０ｂが配設されている。
【００２８】
各押圧板８ａ〜８ｄは、金属製平板形状に構成されており、マンドレル６の本体７側部に設置される、エアーシリンダＣＹ１〜ＣＹ４（圧接手段）と連結され（図２参照）、該エアーシリンダＣＹ１〜ＣＹ４のストローク動作により、外側または内側に移動し得るようになっている。
【００２９】
４枚の押圧板８ａ〜８ｄのうち、押圧板８ａ，８ｂは１枚の金属板で構成され、且つ、２個所に吸引ノズル１１が配設されている。吸引ノズル１１は、ノズルの内部をマイナスの空気圧とすることにより吸引力を発生させ、折り曲げ加工されたインナーシート４を一時的に保持するためのものである。また、押圧板８ｃ，８ｄは、２枚の金属板を若干の隙間をあけて並列配置した構成とされ、各金属板の２個所にそれぞれ吸引ノズル１１が配設されている。
【００３０】
第１の折り曲げ機９ａは、先端が鋭角的に折り曲げられた断面略「レ」字形状の金属板を２枚対称に配置して構成される第１の押圧金具１２ａを有しており、該押圧金具１２ａは台座１３ａに固定されている。この台座１３ａは、エアーシリンダＣＹ５と連結され、該エアーシリンダＣＹ５のストローク動作により、マンドレル６側への進退動作が制御されるようになっている。
【００３１】
また、図４は、図３に示す折り曲げ部２００の模式平面図であり、同図に示すように、第１の押圧金具１２ａの先端折り曲げ部の開口幅（及び、第１の押圧金具１２ｂの先端折り曲げ部の開口幅）Ｌ１は、押圧板８ａの横幅Ｌ２よりも若干大きく設定されている。
【００３２】
図３に示す台座１３ａの両端部には、エアーシリンダＣＹ７，ＣＹ８が搭載され、該エアーシリンダＣＹ７，ＣＹ８には、丸棒１４ａを有する第２の押圧金具１５ａが連結されている。従って、エアーシリンダＣＹ７，ＣＹ８のストローク動作により第２の押圧金具１５ａはマンドレル６側に進退動作が可能とされている。また、図４に示すように、２本の丸棒１４ａ，１４ａ間の幅（及び２本の丸棒１４ｂ，１４ｂ間の幅）は、押圧板８ｃの外面と押圧板８ｄの外面との間隔Ｌ４よりも若干大きくなるように設定されている。
【００３３】
図３に示す第２の折り曲げ機９ｂは、第１の押圧金具１２ｂ、第２の押圧金具１５ｂ、台座１３ｂ、丸棒１４ｂ、エアーシリンダＣＹ６，ＣＹ９，ＣＹ１０を具備しており、第１の折り曲げ機９ａと同一構成とされている。
【００３４】
第３の折り曲げ機１０ａは、第３の押圧金具１６ａと、該押圧金具１６ａに連結されてこの第３の押圧金具１６ａをマンドレル６側に進退動作させるためのエアーシリンダＣＹ１１とを具備している。第３の押圧金具１６ａは、金属製の平板１８ａと、該平板１８ａの外側面の上下方向に沿って配置されるフィン１７ａとから構成されている。
【００３５】
第４の折り曲げ機１０ｂは、平板１８ｂとフィン１７ｂから成る第３の押圧金具１６ｂと、エアーシリンダＣＹ１２とを具備しており、第３の折り曲げ機１０ａと同一構成とされている。
【００３６】
図１に示すように、折り曲げ部２００と筒状補強部材挿入固定部３００との間には、折り曲げ部２００でインナーブランク４を折り曲げ加工して得られた筒状補強部材２１の側部に、糊を吹き付けるための糊付け機２２が設置され（図では、２個所のみ示しているが、実際には各側面に１個所づつで合計４個所）、折り曲げ部２００で折り曲げ加工された筒状補強部材２１が筒状補強部材挿入固定部３００側に下降する際に、該糊付け機２２から接着用の液体状の糊を噴射して筒状補強部材２１の所望の側面に糊を付着させる。この糊付け機２２で噴射する糊は、糊供給装置１９から供給される。
【００３７】
図５は、筒状補強部材挿入固定部３００の構成を示す斜視図であり、同図に示すように、筒状補強部材挿入固定部３００は、上流側から供給される段ボール箱２３を所望の部位に送り込む段ボール箱供給用コンベヤ２４と、この段ボール箱供給用コンベヤ２４の終端部側方のマンドレル下降位置Ｐ１にて、段ボール箱２３の外側４面を押さえる押さえ板２０ａ〜２０ｄと、筒状補強部材２１を挿入した後の段ボール箱２３を下流側に送り出す段ボール箱送り出し用コンベヤ２５と、を具備している。
【００３８】
押さえ板２０ａは、段ボール箱供給用コンベヤ２４の終端部側方（Ｐ１とは反対側）に配置され、コンベヤ２４の移動方向と直交する方向に進退動作し得るエアーシリンダＣＹ１３と連結され、コンベヤ２４の終端に達した段ボール箱２３を横方向に押し出してマンドレル下降位置Ｐ１に移動させる。
【００３９】
押さえ板２０ｄは、予め装置のフレームに固定されている。押さえ板２０ｃは、押さえ板２０ｄ側へ進退移動可能なエアーシリンダＣＹ１４と連結されており、押さえ板２０ａにてマンドレル下降位置Ｐ１に送られた段ボール箱２３を押さえ板２０ｄ側に押しつけるように動作する。
【００４０】
押さえ板２０ｂは、移動台座２６に取り付けられ、押さえ板２０ａ側に進退動作し得るエアーシリンダＣＹ１５と連結されており、段ボール箱２３を押さえ板２０ａ側に押しつけるように動作する。
【００４１】
また、移動台座２６は、摺動装置として軸受け孔２７を具備しており、該軸受け孔２７には摺動軸２８が挿通されているので、この移動台座２６と連結されたエアーシリンダＣＹ１６のストローク動作により、図５中の矢印「Ｙ」の方向にスライド移動し得るようになっている。また、移動台座２６の、段ボール箱送り出し用コンベヤ２５側の側面には、段ボール箱２３を送り出すための押し板２９が配置されている。
【００４２】
次に、上記の如く構成された本実施形態の動作を、図６〜図９，図１１〜図１５に示す動作説明図を参照しながら説明する。まず、当該製函装置を作動させる前の準備として、マガジン２ａ，２ｂ（図１参照）のシート受け台３ａ，３ｂ上に、多数のインナーブランク４を載置する。インナーブランク４は、矩形状の段ボールシートで構成されており、折り曲げ加工される部位には予め罫線処理が施されている。また、インナーブランク４として厚紙を使用する場合には、折り曲げ加工される部位に、この部分で曲がり易いように予め罫線処理を施すことが望ましい。
【００４３】
そして、左右の各マガジン２ａ，２ｂのシートキッカー５ａ，５ｂにより、それぞれ１枚ずつインナーブランク４が取り出され、自重により図３に示す折り曲げ部２００の下部ガイド面３１（図３参照）まで落下する。
【００４４】
これにより、図６に示すように、押圧板８ａと第１の折り曲げ機９ａとの間、及び押圧板８ｂと第２の折り曲げ機９ｂとの間に、それぞれインナーブランク４が供給された状態となる。
【００４５】
この状態で、エアーシリンダＣＹ５，ＣＹ６がストローク動作し、第１の押圧金具１２ａ，１２ｂをマンドレル６側に移動させるので、図７に示すようにインナーブランク４は押圧板８ａ，８ｂの側面及びそのエッジ部に当接し、インナーブランク４は４ａの部位で略直角に折り曲げられる。また、インナーブランク４の端部が押圧板８ｃ，８ｄの側面及びそのエッジに当たるので、該インナーブランク４は、４ｂの部位にて略直角に折り曲げられ、結果として、断面がコ字状突起を有する形状に折り曲げ加工される。
【００４６】
次いで、台座１３ａ，１３ｂ上に載置されたエアーシリンダＣＹ７〜ＣＹ１０がストローク動作し、第２の押圧金具１５ａ，１５ｂをマンドレル６側に移動させるので、図８に示すように、丸棒１４ａ，１４ｂによりインナーブランク４の端部が押圧板８ｃ，８ｄのエッジ部分に押しつけられ、インナーブランク４は、４ｃの部位で略直角に折り曲げ加工される。その後、各エアーシリンダＣＹ５〜ＣＹ１０は元の状態に戻される。
【００４７】
更に、エアーシリンダＣＹ１１，ＣＹ１２をストローク動作させ、第３の押圧金具１６ａ，１６ｂをマンドレル６側に移動させると、図９に示すように、各インナーブランク４の端部が押圧板８ｃ，８ｄと第３の押圧金具１６ａ，１６ｂとの間に挟まれてプレスされるので、２枚のインナーブランク４の端部どうしが突き当てられた状態とされ、結果として、２枚のインナーブランク４で、図１０に示す如くの、幅付き十字形状の筒状補強部材２１が形成されることになる。そして、各エアーシリンダＣＹ１１，ＣＹ１２を、前記とは逆方向（マンドレル６から離れる方向）にストローク動作させ、各押圧金具１６ａ，１６ｂを元の状態に戻す。
【００４８】
このとき、各押圧板８ａ〜８ｄに搭載された吸引ノズル１１（図３参照）により、折り曲げ加工された筒状補強部材２１は吸引されているので、第３の押圧金具１６ａ，１６を元の状態に戻しても、筒状補強部材２１はマンドレル６に固定された状態を維持することになる。
【００４９】
そして、この状態でマンドレル６を下降させる。マンドレル６下降時には、４つの側面に配置された糊付け機２２（図１参照）により、筒状補強部材２１の、外側４面の外面２１ａ〜２１ｄ（図１０参照）には、上下方向に沿って接着用の糊が塗布される。
【００５０】
一方、筒状補強部材挿入固定部３００では、図５に示す段ボール箱供給用コンベヤ２４により上部が開口され、閉止時には直方体または立方体をなす段ボール箱２３が供給される（図１１参照）。そして、図１２に示すように、この段ボール箱２３が供給用コンベヤ２４の終端に達すると、図１３に示すように、エアーシリンダＣＹ１３がストローク動作して押さえ板２０ａを移動させ、段ボール箱２３をマンドレル下降位置Ｐ１側へと送り、段ボール箱を下方から保持する保持手段３４上へ配置する。このとき、既に作業を終了した段ボール箱２３′が、段ボール箱２３により段ボール箱送り出し用コンベヤ２５側に送り出される。
【００５１】
次いで、図１４に示すように、移動台座２６が摺動軸２８（図５参照）に沿って図中矢印「Ｂ」に示す方向に移動し、押し板２９で段ボール箱２３′を押し出し、段ボール箱送り出し用コンベヤ２５上に乗せて、下流側へと送り出す。このとき、移動台座２６上の押さえ板２０ｂは、押さえ板２０ａと対向する部位に位置することになる。
【００５２】
その後、エアーシリンダＣＹ１４のストローク動作により押さえ板２０ｃを押さえ板２０ｄ側に移動させ、マンドレル下降位置Ｐ１に位置している段ボール箱２３を押さえつける。同様に、図１５に示すように、エアーシリンダＣＹ１５のストローク動作により押さえ板２０ｂを、押さえ板２０ａ側に移動させて段ボール箱２３を押さえつける。その結果、段ボール箱２３は、４枚の押さえ板２０ａ〜２０ｄによりマンドレル下降位置Ｐ１にて固定されることになる。
【００５３】
段ボール箱２３が固定されると、筒状補強部材２１が装着されたマンドレル６が該段ボール箱２３の内部に下降する。このとき、段ボール箱２３と筒状補強部材２１とは、図１６（ａ）に示す如くの位置関係となる（符号３０は糊である）。そして、この状態で、マンドレル６の内部に配置されたエアーシリンダＣＹ１〜ＣＹ４（図４参照）をストローク動作させて、各押圧板８ａ〜８ｄを外側に押しつけると、各押圧板８ａ〜８ｄと押さえ板２０ａ〜２０ｄとの間に挟まれた、筒状補強部材２１と段ボール箱２３の内面とが加圧接触されるので、筒状補強部材２１に予め塗布された糊３０により、これらは接着固定される。
【００５４】
また、幅付き十字形状を有する筒状補強部材２１の外側４面２１ａが、外側に押しつけられることにより、図１６（ｂ）に示すように、直角に折り曲げられていた筒状補強部材２１の内側隅部２１ｂが展張され、直線状となる。従って、幅付き十字形状の筒状補強部材２１は、断面八角形状の筒体となって段ボール箱２３内部に固定されることになる。
【００５５】
その後、各押圧板８ａ〜８ｄに設置された吸引ノズル１１（図３参照）による吸引が解除され、各エアーシリンダＣＹ１〜ＣＹ４はマンドレル６の内側に戻されるので、各押圧板８ａ〜８ｄは筒状補強部材２１から離脱し、マンドレル６の内側に移動する。その後、マンドレル６は上昇して次の作業の待機状態となる。
【００５６】
また、マンドレル６が取り外され筒状補強部材２１を具備した段ボール箱２３は、移動台座２６の動作により送り出し用コンベヤ２５上に乗せられて、後段側へと送り出されることになる。こうして、上部が開口された段ボール箱２３の内部に、当該段ボール箱２３を補強するための筒状補強部材２１を挿入して固定するという作業を一連の動作で行うことができるのである。
【００５７】
このようにして、本実施形態に係る包装箱の製函装置では、インナーブランク供給部１００に載置したインナーブランク４を折り曲げ処理部２００で折り曲げ加工して、幅付き十字形状を成す筒状補強部材２１を形成し、且つこの筒状補強部材２１を段ボール箱２３内部に挿入する、という作業を一連の工程で行うことができるので、極めて早く、且つ確実に筒状補強部材２１が取り付けられた段ボール箱を製造することができ、作業の能率を飛躍的に向上させることができる。
【００５８】
また、折り曲げ部２００では、最終的な筒状補強部材２１の形状は断面八角形であるが、前工程として、２枚のインナーブランク４を折り曲げ加工して幅付き十字形状となる筒状補強部材２１を形成し、これを外側に押し拡げて八角形状の筒状補強部材２１としているため、図１６（ａ）に示すように、断面が幅付き十字形状であるときには、筒状補強部材２１の外側４面２１ａと段ボール箱２３の内面との間には、距離Ｌ５のクリアランスが生じる。従って、糊付け機２２を使用して筒状補強部材２１の外側４面２１ａに糊３０を塗布した状態で、この筒状補強部材２１を段ボール箱２３の内部に挿入する際に、このクリアランスＬ５の存在により、糊付けされた状態で段ボール箱２３内面と筒状補強部材２１とが擦れることが無く、いわゆる「糊かき」を防止することができる。従って、接着が確実に実施される。
【００５９】
また、図３に示した第３の押圧金具１６ａ，１６にフィン１７ａ，１７ｂを配置することにより、２枚のインナーブランク４の端部どうしを、突き当てた状態で連結することが可能となる。つまり、フィン１７ａ，１７ｂでインナーブランク４どうしの連結部を押圧することにより、２枚のインナーブランク４の端部どうしが、重なり合ったり、或いは、２枚のインナーブランク４間に隙間が生じることが無い。このため、段ボール箱２３内部に薄手のシート等を挿入して使用する場合においても、インナーブランク４の端部と接触して薄手のシートを破損する等の不具合の発生を防止することができる。
【００６０】
また、上述した包装箱の製函装置において、図２に示す矢印「Ｘ」の方向に、マンドレル６、マガジン２ａ，２ｂ、第１〜第４の折り曲げ機９ａ，９ｂ、１０ａ，１０ｂ、各押さえ板２０ａ〜２０ｄ等を、スライド移動可能に構成すれば、サイズの異なる段ボール箱（縦方向、横方向のうち一方向のみ異なる段ボール箱）に対して、筒状補強部材２１を挿入することができるようになる。
【００６１】
次に、本発明の第２の実施形態に係る包装箱の製函装置について説明する。図１７は、第２の実施形態に係る包装箱の製函装置の平面図であり、図示のように、この製函装置は、インナーブランク４を載置するためのマガジン３３を一つとしており、該マガジン３３に蓄積されたインナーブランク４を振り分け装置３２にて左右に振り分ける構成とし、その他の部分は、前記した第１の実施形態と同様の構成を有する。
【００６２】
即ち、製函作業が開始されると、マガジン３３に蓄積されたインナーブランク４を振り分け装置３２により１枚取り出して、図中左側の供給部位に供給し、更にもう１枚取り出して図中右側の供給部位に供給する。これにより、図６に示したように、２枚のインナーブランク４がそれぞれ押圧板８ａと第１の折り曲げ機９ａとの間、及び押圧板８ｂと第２の折り曲げ機９ｂとの間に供給されることになる。その後、上述した第１の実施形態と同様の手順で、筒状補強部材２１を作成し、この筒状補強部材２１を段ボール箱２３内部に挿入することができる。
なお、振り分け装置３２は、空気を吸引する空気孔を設けた吸引板を有しており、この吸引板によりインナーブランク４を保持する機構とされている。
【００６３】
このようにして、第２の実施形態に係る包装箱の製函装置では、インナーブランクを供給するためのマガジン３３を１台としているので、マガジン３３の取付スペースを小さくすることができ、省スペース化を図ることができる。また、マガジン３３への、インナーシート４の供給個所が１個所のみとなるので、作業者の労力を軽減することができる。
【００６４】
【発明の効果】
以上説明したように、本発明の包装箱の製函装置及び包装箱の製函方法によれば、上部が開口された段ボール箱の内部に挿入して、強度をアップするための筒状補強部材を、一連の工程で作成し、この筒状補強部材を予め作成した段ボール箱内部に挿入して、該段ボール箱内面に接着固定する。この際、糊付けする個所、及び折り曲げ個所が極めて少く、従来より使用されているバックインボックスの製造装置及び方法と比較して極めて簡単且つ確実に製造することができる。更に、上部が開口された矩形状の段ボール箱内に、上方から筒状補強部材を挿入する構成であるので、コンベヤで連結することにより既存の一般的な段ボール箱組立装置（製函装置）と組み合わせて使用することができる。
【００６５】
また、インナーブランクを折り曲げ加工する折り曲げ部においては、筒状補強部材の最終形状である断面八角形状（八角柱）ではなく、前工程として断面が幅付き十字形状に折り曲げ加工し、この筒状補強部材の外側４面の外面に接着用の糊を塗布して箱体に挿入する構成としているので、筒状補強部材が段ボール箱の内部に挿入される際に、筒状補強部材の外側４面と段ボール箱の内面との間に生じる隙間によりお互いが擦れることが無く、「糊かき」を防止することができ、確実な接着接合が得られる。
【００６６】
また、第３の折り曲げ手段及び第４の折り曲げ手段に搭載される押圧金具（第３の押圧金具１６ａ，１６ｂ）の押圧面には、フィンが形成されているので、２枚のインナーブランクの端部どうしが確実に互いに突き当てられた状態で連結されることになり、インナーブランクの端部のエッジ部分が露出することを防止することができる。これにより、段ボール箱内部に薄手のフィルム等を挿入する際においても、該フィルムがインナーブランクのエッジ部分と接触して破損する等の問題の発生を防止することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態に係る包装箱の製函装置の構成を示す立面図である。
【図２】図１に示した包装箱の製函装置の「Ａ−Ａ」矢視図である。
【図３】折り曲げ部の構成を示す斜視図である。
【図４】折り曲げ部の構成を模式的に示す説明図である。
【図５】筒状補強部材挿入固定部の構成を示す斜視図である。
【図６】折り曲げ部における折り曲げ処理の手順を示す第１の説明図である。
【図７】折り曲げ部における折り曲げ処理の手順を示す第２の説明図である。
【図８】折り曲げ部における折り曲げ処理の手順を示す第３の説明図である。
【図９】折り曲げ部における折り曲げ処理の手順を示す第４の説明図である。
【図１０】折り曲げ部にて作成された筒状補強部材の構成を示す斜視図である。
【図１１】筒状補強部材挿入固定部における処理の手順を示す第１の説明図である。
【図１２】筒状補強部材挿入固定部における処理の手順を示す第２の説明図である。
【図１３】筒状補強部材挿入固定部における処理の手順を示す第３の説明図である。
【図１４】筒状補強部材挿入固定部における処理の手順を示す第４の説明図である。
【図１５】筒状補強部材挿入固定部における処理の手順を示す第５の説明図である。
【図１６】筒状補強部材と段ボール箱との位置関係を示す説明図であり、（ａ）は筒状補強部材を段ボール箱内に挿入したときの状態、（ｂ）は外側４面を外側に押しつけた状態を示す。
【図１７】本発明の包装箱の製函装置に係る第２の実施形態の構成を示す説明図である。
【図１８】従来におけるバックインボックスの展開図である。
【図１９】図１８に示した従来におけるバックインボックスの組立手順を示す説明図である。
【符号の説明】
１製函装置
２ａ，２ｂマガジン
３ａ，３ｂシート受け台
４インナーブランク
５ａ，５ｂシートキッカー
６マンドレル
７マンドレル本体
７ａ〜７ｄマンドレルの側面
８ａ〜８ｄ押圧板
９ａ第１の折り曲げ機
９ｂ第２の折り曲げ機
１０ａ第３の折り曲げ機
１０ｂ第４の折り曲げ機
１１吸引ノズル
１２ａ，１２ｂ第１の押圧金具
１３ａ，１３ｂ台座
１４ａ，１４ｂ丸棒
１５ａ，１５ｂ第２の押圧金具
１６ａ，１６ｂ第３の押圧金具
１７ａ，１７ｂフィン
１８ａ，１８ｂ平板
１９糊供給装置
２０ａ〜２０ｄ押さえ板（保持手段）
２１筒状補強部材
２１ａ筒状補強部材の外側の側面
２２糊付け機
２３，２３′ 段ボール箱
２４段ボール箱供給用コンベヤ（箱体供給用コンベヤ）
２５段ボール箱送り出し用コンベヤ（箱体送り出し用コンベヤ）
２６移動台座
２７軸受け孔
２８摺動軸
２９押し板
３０糊
３１下部ガイド面
３２振り分け装置
３３マガジン
３４保持手段
１００インナーブランク供給部
２００折り曲げ部
３００筒状補強部材挿入固定部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging box manufacturing apparatus and a packaging box manufacturing method for manufacturing a packaging box having a reinforcing member for improving the strength against pressure from above or pressure from the inside.
[0002]
[Prior art]
For example, fluid articles such as liquids and powders are mainly stored in metal containers such as tin cans, but metal containers have the disadvantage that they are heavy and cumbersome to dispose of. Therefore, in recent years, a so-called “back-in-box” paper container using a paper container has been developed and put into practical use.
[0003]
The back-in box uses a paper container such as a cardboard box as an exterior, and has a configuration in which a soft plastic bag such as polyethylene, polypropylene, or PET film is accommodated inside, and inside this plastic bag, Stores liquids such as drinking water, liquors and oils. Such back-in boxes are often stacked or stored or transported in multiple stages. When back-in boxes are stacked in multiple stages, a large load is applied to the side of the back-in box below. Will be crushed without being able to withstand the load. In addition, the pressure of the liquid packed inside during transportation or the like acts on the inner surface of the box, and the liquid in the plastic bag swells in the lateral direction, resulting in a so-called “trunk” state. There was a problem.
[0004]
Therefore, as a method for solving the above problems, for example, a back-in box and a manufacturing apparatus therefor have been disclosed as disclosed in, for example, Japanese Patent Laid-Open No. 8-224806. 18 and 19 are explanatory views showing the configuration of the back-in box described in this conventional example. FIG. 18 is a development view and FIG. 19 is an assembly view.
[0005]
As shown in FIG. 18, this back-in box can be manufactured by appropriately folding a blank having a plurality of ruled lines and notches, and as shown in FIG. Since an octagonal cylinder is formed, the four corners of the box are reinforced, and a large load can be supported for both external pressure and internal pressure.
[0006]
However, since the conventional back-in box described above requires a very complicated blank as shown in FIG. 18, the process until the blank is manufactured is extremely troublesome.
In addition, there are many places to be folded, and therefore, many folding steps and gluing steps are required before the blank is folded to finally form a back-in box, resulting in a problem of poor productivity.
[0007]
[Problems to be solved by the invention]
As described above, the conventional back-in box has an octagonal cylindrical reinforcing member formed inside a rectangular parallelepiped or cubic box as an exterior, so that the side surface of the box has a double structure. Thus, the strength against pressure applied in the vertical direction can be strengthened. In addition, when the pressure of the liquid packed in the bag is applied to the side of the box during movement, the cylindrical reinforcing member of the octagonal column acts in a direction to prevent the swelling, so But it has a strong structure.
[0008]
However, in the manufacture of the conventional back-in box, since the box and the cylindrical reinforcing member are cut out from one cardboard sheet, not only the assembly process is complicated, but also for a general cardboard box. The conventional assembling apparatus (box making apparatus) could not be used.
[0009]
Further, since the box and the cylindrical reinforcing member have an integral structure, there is a problem that when the size of the box is increased, the size of the material of the box is increased and manufacturing is difficult.
Further, in the conventional method for manufacturing a back-in box in which the box and the cylindrical reinforcing member are integrated, there is a process in which the glued member is rubbed against the box after being glued to the cylindrical reinforcing member portion. There is also a problem that the adhesive strength is not sufficient.
[0010]
The present invention solves these problems, simplifies the manufacturing process of a cardboard box having a reinforcing member, and can also use a conventional general cardboard box assembly apparatus (box making apparatus) as it is. It is an object of the present invention to facilitate the production of the above materials and to solve quality problems such as a lack of glue.
[0011]
The inventors of the present invention manufactured the box and the cylindrical reinforcing member from separate cardboard members, assembled in a separate process, further formed the cylindrical reinforcing member in a shape different from the final shape, and opened the upper part. The present invention has been completed by using a configuration in which the reinforcing member is inserted into a box and the reinforcing member is made into a final shape after the insertion.
[0012]
[Means for Solving the Problems]
To achieve the above objective, The present invention The box making apparatus of the box making apparatus for producing a packaging box with an improved strength by installing a cylindrical reinforcing member inside a rectangular parallelepiped or cubic box, a magazine for accumulating a large number of inner blanks for forming the reinforcing member A folding means for bending the inner blank supplied from the magazine to form a cylindrical reinforcing member, a gluing means for applying glue to a desired portion of the outer surface of the cylindrical reinforcing member, and one surface being open. The holding means for holding the box and the glued cylindrical reinforcing member are inserted into the box held by the holding means, and the cylindrical reinforcing member is press-fixed to the inner surface of the box. And a reinforcing member fixing means.
[0013]
Also, The present invention The box making apparatus is a box making apparatus for manufacturing a packaging box with improved strength by installing an octagonal cylindrical reinforcing member inside a rectangular parallelepiped or cubic box, and the inner blank for forming the reinforcing member is used as the box making apparatus. Magazines that accumulate in large numbers, bending means that bends an inner blank supplied from the magazine to form a cylindrical reinforcing member having a cross-section with a width, and outer surfaces of the outer four surfaces of the cylindrical reinforcing member In addition, the gluing means for applying the glue, the holding means for holding the box having an open top surface, and the glued cylindrical reinforcing member are inserted into the box held by the holding means. A reinforcing member fixing means that presses the outer four surfaces of the cylindrical reinforcing member against the inner surface of the box, and deforms and fixes the cross-shaped cross section with a width into an octagonal cross section. To do.
[0014]
Claim 1 The box making apparatus described in the above is a box making apparatus for manufacturing a packaging box with an improved strength by installing an octagonal cylindrical reinforcing member inside a rectangular parallelepiped or a cubic box. A first magazine composed of one inner blank and a second inner blank, and a first magazine for accumulating a large number of the first inner blanks, a second magazine for accumulating a large number of the second inner blanks, and four side surfaces. A pressure plate is disposed, and a mandrel capable of moving up and down in a vertical direction and a first inner blank supplied from the first magazine are pressed against the first pressure plate of the mandrel; and Both side portions of the first inner blank are pressed against the sides of the third pressing plate and the fourth pressing plate adjacent to the first pressing plate of the mandrel to form a U-shaped projection on the first inner blank. And first bending means for pressing both end portions of the first inner blank against the edge portions of the third pressing plate and the fourth pressing plate and bending the both end portions at substantially right angles; The second inner blank supplied from the second magazine is pressed against the second pressing plate on the back side of the first pressing plate of the mandrel, and both side portions of the second inner blank are A U-shaped projection is formed on the second inner blank by pressing against the side of the third pressing plate and the fourth pressing plate adjacent to the second pressing plate of the mandrel, and the second inner blank. A second bending means for pressing both end portions of the first pressing plate against the edge portions of the third pressing plate and the fourth pressing plate and bending the both end portions at a substantially right angle; and the first inner blank and the second inner blank. One end folded Third bending means for pressing the third pressing plate to connect one end of the first inner blank and one end of the second inner blank, and bending of the first inner blank and the second inner blank And a fourth bending means for pressing the other end against the fourth pressing plate to connect the other end of the first inner blank and the other end of the fourth inner blank. A fourth bending means that forms a cross-shaped cylindrical reinforcing member having a cross-section and is glued to the outer surface of the outer four surfaces of the cylindrical reinforcing member; and the box having an open top surface Holding means and holding the glued cylindrical reinforcing member mounted on the mandrel into the box held by the holding means and then pressing the first to fourth pressing plates outward And the outer four side surfaces of the tubular reinforcing member Pressure contact means for pressing against the inner surface of the box.
[0015]
Claim 2 The box making apparatus described in the box making apparatus for manufacturing a packaging box with an improved strength by installing an octagonal cylindrical reinforcing member inside a rectangular or cubic box, the cylindrical reinforcing member includes: A magazine comprising two inner blanks and storing a large number of the inner blanks, and a distribution means for distributing the inner blanks stored in the magazines to the first inner blank supply unit and the second inner blank supply unit facing each other. And a mandrel that is provided with a pressure plate on each of the four side surfaces and can be moved up and down, and a first inner blank supplied from the first magazine is a first pressure plate of the mandrel. And press both sides of the first inner blank of the third pressing plate and the fourth pressing plate adjacent to the first pressing plate of the mandrel. The U-shaped projections are formed on the first inner blank by pressing against the side, and both end portions of the first inner blank are pressed against the edge portions of the third pressing plate and the fourth pressing plate. First bending means for bending both end portions at a substantially right angle and a second inner blank supplied from the second magazine are pressed against a second pressing plate on the back side of the first pressing plate of the mandrel. In addition, both side portions of the second inner blank are pressed against the side edges of the third pressing plate and the fourth pressing plate adjacent to the second pressing plate of the mandrel to form the second inner blank. A second bent portion in which a U-shaped projection is formed, and both end portions of the second inner blank are pressed against the edge portions of the third pressing plate and the fourth pressing plate, and the both end portions are bent at substantially right angles. Means and the first inner bran And a third bending means for pressing the bent one end of the second inner blank against the third pressing plate to connect the one end of the first inner blank and the one end of the second inner blank; 4th which connects the other end of the 1st inner blank, and the other end of the 2nd inner blank by pressing the bent other ends of the 1st inner blank and the 2nd inner blank against the 4th press board. And forming a cross-shaped cylindrical reinforcing member having a cross-section with the first to fourth bending means, and gluing to the outer surface of the outer four surfaces of the cylindrical reinforcing member Gluing means, holding means for holding the box whose upper surface is in an open state, and the cylindrical reinforcing member mounted on the mandrel and inserted into the box held by the holding means, 1st to 4th pressing plate And a pressing means for pressing the outer four side surfaces of the cylindrical reinforcing member against the inner surface of the box.
[0016]
Claim 3 The box making apparatus described in 1 is characterized in that the first to fourth pressing plates include suction means for sucking and fixing the pressed first inner blank and second inner blank. Claim 4 In the box making apparatus described in the above, the first to fourth bending means are disposed above the box, and the gluing means is in the middle of the tubular reinforcing member being lowered into the box together with the mandrel. The adhesive is sprayed on the outer surfaces of the four outer surfaces of the reinforcing member.
[0017]
Claim 5 In the box making apparatus described in the above, the third bending means has a pressing fitting for pressing the inner blank against the third pressing plate side, and the fourth bending means is the fourth pressing means. It has a pressing metal fitting for pressing an inner blank on the plate side, and each pressing metal fitting is characterized in that a fin is formed on the pressing surface.
[0018]
Claim 6 The box making apparatus described in (2) is characterized in that the holding means includes a pressing plate for receiving a pressing force by the first to fourth pressing plates. Claim 7 The box making apparatus described in 1 is a box for feeding the box body from the upstream side to the descending portion of the mandrel, and a box for sending the box body after the cylindrical reinforcing member is inserted to the downstream side. A body delivery conveyor is provided.
[0019]
The present invention The box making method is a box making method in which a cylindrical reinforcing member is installed inside a rectangular parallelepiped or cubic box to produce a packaging box with improved strength. Forming a cylindrical reinforcing member, applying an adhesive paste to the outer four outer surfaces of the cylindrical reinforcing member, holding the box, and the glued cylinder After the cylindrical reinforcing member is inserted into the held box body, the reinforcing member is pressed and fixed to the box body by pressing from the inside of the outer four surfaces of the cylindrical reinforcing member toward the inner surface of the box body. And a step of performing.
[0020]
Claim 8 The box making method described in the above is a step of accumulating a large number of inner blanks in a box making method for manufacturing a packaging box with improved strength by installing an octagonal cylindrical reinforcing member inside a rectangular parallelepiped or cubic box. A step of supplying a first inner blank and a second inner blank constituting the tubular reinforcing member, respectively, and a U-shaped protrusion at a substantially central portion of each of the first inner blank and the second inner blank. Forming the first inner blank and the second inner blank at which the U-shaped protrusions are formed, folding the end portions of the first inner blank and the second inner blank at a substantially right angle, respectively, Connecting the ends of the inner blank and the second inner blank to form a cross-shaped cylindrical reinforcing member having a cross section; and the cylindrical reinforcing The step of applying glue to the outer four outer surfaces of the material, the step of holding the box in an open state on the top surface, and the glued cylindrical reinforcing member inserted into the held box Thereafter, the cylindrical reinforcing member is pressed against the inside of the box by pressing from the inside of the outer four surfaces of the cylindrical reinforcing member to the inside of the box, and the cross-shaped cross section with a width is an octagonal cross section. And a step of deforming and fixing to.
[0021]
According to the present invention configured as described above, the inner blank is bent to create a cylindrical reinforcing member, and the cylindrical reinforcing member is inserted into the box and bonded at the glued contact surface. Thus, a box body provided with the cylindrical reinforcing member is manufactured. Thereby, the box provided with the cylindrical reinforcing member can be manufactured extremely easily and reliably.
[0022]
Further, in the packaging box making apparatus of the present invention, a box is manufactured by inserting a cylindrical reinforcing member into a generally used box (for example, A1 type cardboard box). If it connects with the existing box manufacturing apparatus, the packaging box which comprised the cylindrical reinforcement member can be created easily.
[0023]
Further, a cylindrical reinforcing member having a cross-shaped cross section is created, and the cylindrical reinforcing member is glued to the outside of the outer four surfaces (the cross-shaped left, right, upper and lower surfaces) and inserted into the box. Is spread out in an octagonal column shape and bonded to the inner surface of the box. For this reason, it can prevent that the glued cylindrical reinforcement member is rubbed on the inner surface of the box during assembly.
The box and its reinforcing member in the present invention are made of a paper-based material such as a corrugated cardboard sheet, and paper coated with or containing a synthetic resin or the like to impart water resistance is also used.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an elevation view showing a configuration of an embodiment of a packaging box box making apparatus to which the present invention is applied, and FIG. 2 is an elevation view “A-” in the elevation view shown in FIG. A ' It is an arrow view. As shown in FIG. 2, the box making apparatus 1 has a three-stage configuration of an upper stage, a middle stage, and a lower stage, and among these, the upper stage supplies an inner blank that is a material for forming a cylindrical reinforcing member. The middle stage is a bent part 200 that folds the inner blank provided from the inner blank supply part 100 to create a cross-shaped cylindrical reinforcing member with a cross-section, and the lower stage is The upper opening corrugated cardboard box supplied from the upstream side is held, and the glued cylindrical reinforcing member formed by the bent portion 200 is inserted in the inside, and the cylindrical reinforcing member is expanded and formed into an octagonal prism shape. Thus, the cylindrical reinforcing member inserting and fixing portion 300 is provided for performing a process of bonding and fixing to the inner surface of the cardboard box.
[0025]
As shown in FIG. 1, the inner blank supply unit 100 has two magazines 2a and 2b that are symmetrically arranged from the center to the left and right, and each magazine 2a and 2b is inclined in the center direction. The sheet kickers 5a and 5b for taking out the sheet receivers 3a and 3b and the many inner blanks 4 placed on the sheet receivers 3a and 3b one by one and supplying them to the bent portion 200 below. It has.
[0026]
FIG. 3 is a perspective view showing the configuration of the bent portion 200. As shown in FIG. 3, a mandrel 6 is installed at the center of the bent portion 200. As shown in FIG. The mandrel 6 includes a main body 7 that can move in the vertical direction, and pressing plates 8a to 8d that are disposed on four side surfaces 7a to 7d of the main body 7, respectively.
[0027]
The mandrel 6 is provided with a first folding machine 9a at a portion facing the pressing plate 8a, and a second bending machine 9b is disposed at a portion facing the pressing plate 8b. A third folding machine 10a is disposed at a portion facing 8c, and a fourth folding machine 10b is disposed at a portion facing the pressing plate 8d.
[0028]
Each of the pressing plates 8a to 8d has a metal plate shape, and is connected to air cylinders CY1 to CY4 (pressure contact means) installed on the side of the main body 7 of the mandrel 6 (see FIG. 2). The cylinders CY1 to CY4 can move outward or inward by a stroke operation.
[0029]
Of the four pressing plates 8a to 8d, the pressing plates 8a and 8b are formed of a single metal plate, and suction nozzles 11 are disposed at two locations. The suction nozzle 11 is for temporarily holding the bent inner sheet 4 by generating a suction force by setting the inside of the nozzle to a negative air pressure. Further, the pressing plates 8c and 8d have a configuration in which two metal plates are arranged in parallel with a slight gap therebetween, and suction nozzles 11 are respectively provided at two locations on each metal plate.
[0030]
The first folding machine 9a includes a first pressing member 12a configured by symmetrically arranging two metal plates having a substantially “L” -shaped cross section whose front ends are bent acutely, The pressing metal 12a is fixed to the pedestal 13a. The pedestal 13a is connected to the air cylinder CY5, and the advancing / retreating operation toward the mandrel 6 is controlled by the stroke operation of the air cylinder CY5.
[0031]
FIG. 4 is a schematic plan view of the bent portion 200 shown in FIG. 3, and as shown in FIG. 4, the opening width of the tip bent portion of the first pressing fitting 12a (and the first pressing fitting 12b). The opening width L1 of the tip bent portion is set slightly larger than the lateral width L2 of the pressing plate 8a.
[0032]
Air cylinders CY7 and CY8 are mounted on both ends of the pedestal 13a shown in FIG. 3, and a second pressing member 15a having a round bar 14a is connected to the air cylinders CY7 and CY8. Therefore, the second pressing member 15a can be moved back and forth toward the mandrel 6 by the stroke operation of the air cylinders CY7 and CY8. Further, as shown in FIG. 4, the width between the two round bars 14a, 14a (and the width between the two round bars 14b, 14b) is the distance between the outer surface of the pressing plate 8c and the outer surface of the pressing plate 8d. It is set to be slightly larger than L4.
[0033]
The second bending machine 9b shown in FIG. 3 includes a first pressing fitting 12b, a second pressing fitting 15b, a pedestal 13b, a round bar 14b, and air cylinders CY6, CY9, and CY10. The configuration is the same as that of the machine 9a.
[0034]
The third bending machine 10a includes a third pressing member 16a and an air cylinder CY11 that is connected to the pressing member 16a and moves the third pressing member 16a forward and backward to the mandrel 6 side. . The third pressing metal fitting 16a includes a metal flat plate 18a and fins 17a arranged along the vertical direction of the outer surface of the flat plate 18a.
[0035]
The fourth folding machine 10b includes a third press fitting 16b including a flat plate 18b and fins 17b, and an air cylinder CY12, and has the same configuration as the third folding machine 10a.
[0036]
As shown in FIG. 1, between the bent part 200 and the cylindrical reinforcing member insertion fixing part 300, on the side part of the cylindrical reinforcing member 21 obtained by bending the inner blank 4 with the bent part 200, A gluing machine 22 for spraying glue is installed (in the figure, only two places are shown, but in actuality, one place on each side is a total of four places), and a cylindrical reinforcing member that is bent at the folding portion 200 When 21 moves down to the cylindrical reinforcing member insertion fixing part 300 side, the glue is applied to the desired side surface of the cylindrical reinforcing member 21 by spraying liquid glue for bonding from the gluing machine 22. The glue sprayed by the gluing machine 22 is supplied from the glue supply device 19.
[0037]
FIG. 5 is a perspective view showing the configuration of the cylindrical reinforcing member insertion / fixing portion 300. As shown in FIG. 5, the cylindrical reinforcing member insertion / fixing portion 300 has a desired corrugated cardboard box 23 supplied from the upstream side. Corrugated cardboard box supply conveyor 24 to be fed into the region, presser plates 20a to 20d for pressing the outer four surfaces of the cardboard box 23 at the mandrel descending position P1 on the side of the terminal end of the cardboard box supply conveyor 24, and cylindrical reinforcement And a cardboard box delivery conveyor 25 for feeding the cardboard box 23 after the member 21 is inserted to the downstream side.
[0038]
The holding plate 20a is disposed on the side of the terminal end side (opposite to P1) of the cardboard box supply conveyor 24, and is connected to an air cylinder CY13 that can move forward and backward in a direction perpendicular to the moving direction of the conveyor 24. The cardboard box 23 that has reached the end is pushed out in the horizontal direction and moved to the mandrel descending position P1.
[0039]
The holding plate 20d is fixed in advance to the frame of the apparatus. The holding plate 20c is connected to an air cylinder CY14 that can move forward and backward toward the holding plate 20d, and operates to press the cardboard box 23 sent to the mandrel descending position P1 with the holding plate 20a against the holding plate 20d. .
[0040]
The holding plate 20b is attached to the movable base 26 and is connected to an air cylinder CY15 that can move back and forth toward the holding plate 20a, and operates to press the cardboard box 23 against the holding plate 20a.
[0041]
Further, the moving base 26 has a bearing hole 27 as a sliding device, and the sliding shaft 28 is inserted into the bearing hole 27. Therefore, the stroke of the air cylinder CY16 connected to the moving base 26 is provided. By the operation, it can slide in the direction of the arrow “Y” in FIG. Further, a push plate 29 for sending out the cardboard box 23 is disposed on the side surface of the moving base 26 on the side of the cardboard box sending conveyor 25.
[0042]
Next, the operation of the present embodiment configured as described above will be described with reference to the operation explanatory diagrams shown in FIGS. 6 to 9 and FIGS. First, as a preparation before operating the box making apparatus, a large number of inner blanks 4 are placed on the sheet receiving bases 3a and 3b of the magazines 2a and 2b (see FIG. 1). The inner blank 4 is composed of a rectangular corrugated cardboard sheet, and a ruled line process is applied in advance to a portion to be bent. In addition, when using thick paper as the inner blank 4, it is desirable to apply a ruled line process in advance so that the portion to be bent is easily bent at this portion.
[0043]
Then, the inner blanks 4 are taken out one by one by the sheet kickers 5a and 5b of the left and right magazines 2a and 2b, and fall to the lower guide surface 31 (see FIG. 3) of the bent portion 200 shown in FIG. .
[0044]
Thereby, as shown in FIG. 6, the state in which the inner blank 4 is supplied between the pressing plate 8a and the first folding machine 9a and between the pressing plate 8b and the second folding machine 9b, respectively. Become.
[0045]
In this state, the air cylinders CY5 and CY6 perform the stroke operation and move the first pressing fittings 12a and 12b to the mandrel 6 side. Therefore, as shown in FIG. 7, the inner blank 4 has the side surfaces of the pressing plates 8a and 8b and the side surfaces thereof. The inner blank 4 is brought into contact with the edge portion and is bent at a substantially right angle at a portion 4a. Moreover, since the edge part of the inner blank 4 contacts the side surface and the edge of the press plates 8c and 8d, the inner blank 4 is bent at a substantially right angle at the portion 4b, and as a result, the cross section has a U-shaped projection. It is bent into a shape.
[0046]
Next, the air cylinders CY7 to CY10 placed on the pedestals 13a and 13b perform stroke operation to move the second pressing fittings 15a and 15b to the mandrel 6 side, so that as shown in FIG. The end portion of the inner blank 4 is pressed against the edge portions of the pressing plates 8c and 8d by 14b, and the inner blank 4 is bent at a substantially right angle at the portion 4c. Thereafter, the air cylinders CY5 to CY10 are returned to their original states.
[0047]
Further, when the air cylinders CY11 and CY12 are stroked and the third press fittings 16a and 16b are moved to the mandrel 6, the end portions of the inner blanks 4 are connected to the press plates 8c and 8d as shown in FIG. Since it is sandwiched and pressed between the third press fittings 16a and 16b, the end portions of the two inner blanks 4 are brought into contact with each other. As a result, the two inner blanks 4 are As shown in FIG. 10, a cross-shaped tubular reinforcing member 21 having a width is formed. Then, the air cylinders CY11 and CY12 are stroked in the opposite direction (the direction away from the mandrel 6) to return the press fittings 16a and 16b to their original states.
[0048]
At this time, since the bent cylindrical reinforcing member 21 is sucked by the suction nozzles 11 (see FIG. 3) mounted on the pressing plates 8a to 8d, the third pressing fittings 16a and 16 are moved to the original positions. Even if it returns to a state, the cylindrical reinforcement member 21 will maintain the state fixed to the mandrel 6. FIG.
[0049]
In this state, the mandrel 6 is lowered. When the mandrel 6 is lowered, the outer surfaces 21a to 21d (see FIG. 10) of the outer four surfaces of the cylindrical reinforcing member 21 are arranged along the vertical direction by the gluing machine 22 (see FIG. 1) arranged on the four side surfaces. Adhesive glue is applied.
[0050]
On the other hand, in the cylindrical reinforcing member insertion fixing part 300, the upper part is opened by the corrugated cardboard supply conveyor 24 shown in FIG. 5, and a corrugated cardboard box 23 that is a rectangular parallelepiped or a cube is supplied when closed (see FIG. 11). Then, as shown in FIG. 12, when the cardboard box 23 reaches the end of the supply conveyor 24, as shown in FIG. 13, the air cylinder CY13 moves to move the holding plate 20a, and the cardboard box 23 is moved. The paper is sent to the mandrel descending position P1 side and is placed on the holding means 34 for holding the cardboard box from below. At this time, the corrugated cardboard box 23 ′, which has already been finished, is sent out by the cardboard box 23 to the cardboard box feed conveyor 25 side.
[0051]
Next, as shown in FIG. 14, the movable pedestal 26 moves along the sliding shaft 28 (see FIG. 5) in the direction indicated by the arrow “B” in the drawing, and the cardboard box 23 ′ is pushed out by the push plate 29. It is placed on the box delivery conveyor 25 and sent to the downstream side. At this time, the pressing plate 20b on the moving base 26 is located at a portion facing the pressing plate 20a.
[0052]
Thereafter, the holding plate 20c is moved to the holding plate 20d side by the stroke operation of the air cylinder CY14, and the cardboard box 23 located at the mandrel lowering position P1 is pressed. Similarly, as shown in FIG. 15, the holding plate 20b is moved to the holding plate 20a side by the stroke operation of the air cylinder CY15, and the cardboard box 23 is pressed. As a result, the cardboard box 23 is fixed at the mandrel descending position P1 by the four pressing plates 20a to 20d.
[0053]
When the cardboard box 23 is fixed, the mandrel 6 to which the cylindrical reinforcing member 21 is attached descends into the cardboard box 23. At this time, the cardboard box 23 and the cylindrical reinforcing member 21 are in a positional relationship as shown in FIG. 16A (reference numeral 30 is glue). In this state, when the air cylinders CY1 to CY4 (see FIG. 4) disposed in the mandrel 6 are stroked to press the pressing plates 8a to 8d outward, the pressing plates 8a to 8d and the press plates are pressed. Since the cylindrical reinforcing member 21 and the inner surface of the cardboard box 23 sandwiched between the plates 20a to 20d are brought into pressure contact with each other, they are bonded and fixed by the glue 30 previously applied to the cylindrical reinforcing member 21. Is done.
[0054]
Further, as shown in FIG. 16 (b), the outer four surfaces 21a of the cylindrical reinforcing member 21 having a widthed cross shape are pressed outward, so that the inner side of the cylindrical reinforcing member 21 bent at a right angle is formed. The corner 21b is extended and becomes a straight line. Therefore, the cross-shaped tubular reinforcing member 21 having a width is fixed to the inside of the cardboard box 23 as an octagonal cross section.
[0055]
Thereafter, the suction by the suction nozzles 11 (see FIG. 3) installed on the respective pressing plates 8a to 8d is released, and the air cylinders CY1 to CY4 are returned to the inside of the mandrel 6, so that the pressing plates 8a to 8d are cylinders. It moves away from the reinforcing member 21 and moves to the inside of the mandrel 6. Thereafter, the mandrel 6 rises and enters a standby state for the next work.
[0056]
Further, the cardboard box 23 from which the mandrel 6 is removed and the cylindrical reinforcing member 21 is provided is placed on the delivery conveyor 25 by the operation of the moving base 26 and is sent out to the rear stage side. Thus, the operation of inserting and fixing the cylindrical reinforcing member 21 for reinforcing the cardboard box 23 inside the cardboard box 23 whose upper part is opened can be performed by a series of operations.
[0057]
In this way, in the packaging box box making apparatus according to the present embodiment, the inner blank 4 placed on the inner blank supply unit 100 is bent by the bending processing unit 200 to form a cylindrical reinforcement that forms a cross with a width. Since the operation of forming the member 21 and inserting the cylindrical reinforcing member 21 into the cardboard box 23 can be performed in a series of steps, the cylindrical reinforcing member 21 is attached very quickly and reliably. A cardboard box can be manufactured, and the work efficiency can be dramatically improved.
[0058]
Further, in the bent portion 200, the final cylindrical reinforcing member 21 has an octagonal cross section, but as a pre-process, the cylindrical reinforcing member is formed into a cross shape with a width by bending the two inner blanks 4. 21 and is expanded outward to form an octagonal cylindrical reinforcing member 21. Therefore, as shown in FIG. 16 (a), when the cross section is a cross with a width, the cylindrical reinforcing member 21 A clearance of a distance L5 is generated between the outer four surfaces 21a and the inner surface of the cardboard box 23. Accordingly, when the cylindrical reinforcing member 21 is inserted into the cardboard box 23 with the glue 30 applied to the outer four surfaces 21a of the cylindrical reinforcing member 21 using the gluing machine 22, the clearance L5 Due to the presence, the inner surface of the cardboard box 23 and the cylindrical reinforcing member 21 are not rubbed in the pasted state, and so-called “glue” can be prevented. Therefore, adhesion is reliably performed.
[0059]
Further, by disposing the fins 17a and 17b on the third press fittings 16a and 16 shown in FIG. 3, it is possible to connect the end portions of the two inner blanks 4 in a state of abutting each other. . That is, when the connecting portions of the inner blanks 4 are pressed by the fins 17a and 17b, the end portions of the two inner blanks 4 overlap each other, or a gap is generated between the two inner blanks 4. No. For this reason, even when a thin sheet or the like is inserted into the cardboard box 23 and used, it is possible to prevent the occurrence of problems such as contact with the end of the inner blank 4 and damage of the thin sheet.
[0060]
Further, in the packaging box box making apparatus described above, the mandrel 6, the magazines 2a and 2b, the first to fourth folding machines 9a, 9b, 10a and 10b, and the respective pressers in the direction of the arrow “X” shown in FIG. If the plates 20a to 20d and the like are configured to be slidable, the cylindrical reinforcing member 21 can be inserted into cardboard boxes of different sizes (corrugated cardboard boxes that differ only in one direction in the vertical direction and the horizontal direction). It becomes like this.
[0061]
Next, a packaging box box making apparatus according to a second embodiment of the present invention will be described. FIG. 17 is a plan view of a packaging box box making apparatus according to the second embodiment. As shown in the drawing, this box making apparatus has one magazine 33 for placing the inner blank 4. The inner blank 4 accumulated in the magazine 33 is distributed to the left and right by the distribution device 32, and the other parts have the same configuration as in the first embodiment.
[0062]
That is, when the box making operation is started, one inner blank 4 accumulated in the magazine 33 is taken out by the sorting device 32 and supplied to the supply site on the left side in the figure, and another one is taken out and the right side in the figure is taken. Supply to supply site. Thereby, as shown in FIG. 6, the two inner blanks 4 are respectively supplied between the pressing plate 8a and the first folding machine 9a and between the pressing plate 8b and the second folding machine 9b. Will be. Thereafter, the cylindrical reinforcing member 21 can be created and inserted into the cardboard box 23 in the same procedure as in the first embodiment described above.
The sorting device 32 has a suction plate provided with an air hole for sucking air, and serves as a mechanism for holding the inner blank 4 by this suction plate.
[0063]
Thus, in the packaging box box making apparatus according to the second embodiment, since the magazine 33 for supplying the inner blank is one, the mounting space for the magazine 33 can be reduced, and the space is saved. Can be achieved. Moreover, since the supply location of the inner sheet 4 to the magazine 33 is only one, the labor of the operator can be reduced.
[0064]
【The invention's effect】
As described above, according to the packaging box box making apparatus and the packaging box box making method of the present invention, the cylindrical reinforcing member is inserted into the inside of the corrugated cardboard box whose upper part is opened to increase the strength. Is produced in a series of steps, and this cylindrical reinforcing member is inserted into a pre-made cardboard box and bonded and fixed to the inner surface of the cardboard box. At this time, the number of places to be glued and the number of places to be bent are extremely small, and it can be manufactured very easily and reliably as compared with the conventional back-in-box manufacturing apparatus and method. Furthermore, since it is the structure which inserts a cylindrical reinforcement member from the upper part in the rectangular corrugated cardboard box with which the upper part was opened, it connects with the existing general cardboard box assembly apparatus (box making apparatus) by connecting with a conveyor. Can be used in combination.
[0065]
In addition, in the bent part where the inner blank is bent, the cross section is bent into a cross shape with a width as a pre-process instead of the octagonal cross section (octagonal column) which is the final shape of the cylindrical reinforcing member. Since the adhesive paste is applied to the outer surfaces of the outer four surfaces of the member and inserted into the box, the outer four surfaces of the cylindrical reinforcing member are inserted when the cylindrical reinforcing member is inserted into the cardboard box. And the inner surface of the corrugated cardboard box are not rubbed with each other, so that "glue" can be prevented and a reliable adhesive bonding can be obtained.
[0066]
Further, since fins are formed on the pressing surface of the pressing fittings (third pressing fittings 16a and 16b) mounted on the third bending means and the fourth bending means, the ends of the two inner blanks It will be connected in the state where the parts were certainly abutted against each other, and the edge portion of the end portion of the inner blank can be prevented from being exposed. Thereby, even when a thin film or the like is inserted into the cardboard box, it is possible to prevent the occurrence of problems such as the film coming into contact with the edge portion of the inner blank and being damaged.
[Brief description of the drawings]
FIG. 1 is an elevational view showing a configuration of a packaging box box making apparatus according to a first embodiment of the present invention.
FIG. 2 is a view of the packaging box box making apparatus shown in FIG.
FIG. 3 is a perspective view showing a configuration of a bent portion.
FIG. 4 is an explanatory diagram schematically showing a configuration of a bent portion.
FIG. 5 is a perspective view showing a configuration of a cylindrical reinforcing member insertion fixing portion.
FIG. 6 is a first explanatory diagram illustrating a procedure of a bending process in a bending portion.
FIG. 7 is a second explanatory diagram illustrating a procedure of a bending process in a bending portion.
FIG. 8 is a third explanatory view showing the procedure of the bending process in the bending portion.
FIG. 9 is a fourth explanatory view showing the procedure of the bending process in the bending portion.
FIG. 10 is a perspective view showing a configuration of a cylindrical reinforcing member created at a bent portion.
FIG. 11 is a first explanatory view showing a processing procedure in a cylindrical reinforcing member insertion fixing portion.
FIG. 12 is a second explanatory diagram showing a processing procedure in the cylindrical reinforcing member insertion fixing portion.
FIG. 13 is a third explanatory diagram showing a processing procedure in the cylindrical reinforcing member insertion fixing portion.
FIG. 14 is a fourth explanatory view showing a processing procedure in the cylindrical reinforcing member insertion fixing portion.
FIG. 15 is a fifth explanatory view showing a processing procedure in the cylindrical reinforcing member insertion fixing portion.
FIGS. 16A and 16B are explanatory views showing the positional relationship between the cylindrical reinforcing member and the cardboard box, in which FIG. 16A is a state when the cylindrical reinforcing member is inserted into the cardboard box, and FIG. The state pressed against is shown.
FIG. 17 is an explanatory view showing a configuration of a second embodiment according to the packaging box box making apparatus of the present invention.
FIG. 18 is a development view of a conventional back-in box.
19 is an explanatory view showing an assembly procedure of the conventional back-in box shown in FIG.
[Explanation of symbols]
1 Box making equipment
2a, 2b magazine
3a, 3b Seat cradle
4 Inner blank
5a, 5b Sheet kicker
6 Mandrels
7 Mandrel body
7a-7d Mandrel side
8a-8d pressing plate
9a First folding machine
9b Second folding machine
10a Third folding machine
10b Fourth folding machine
11 Suction nozzle
12a, 12b 1st press fitting
13a, 13b pedestal
14a, 14b Round bar
15a, 15b Second press fitting
16a, 16b Third press fitting
17a, 17b Fin
18a, 18b flat plate
19 Glue feeder
20a-20d Holding plate (holding means)
21 Cylindrical reinforcement member
21a Outside side surface of cylindrical reinforcing member
22 Gluing machine
23, 23 'cardboard box
24 Corrugated cardboard box supply conveyor (Box supply conveyor)
25 Cardboard box delivery conveyor (box delivery conveyor)
26 Mobile base
27 Bearing hole
28 Sliding shaft
29 Push plate
30 glue
31 Lower guide surface
32 Sorting device
33 Magazine
34 Holding means
100 Inner blank supply section
200 Bending part
300 Cylindrical reinforcement member insertion fixing part

Claims

In a box making apparatus for manufacturing a packaging box with improved strength by installing an octagonal cylindrical reinforcing member inside a rectangular parallelepiped or cubic box,
The cylindrical reinforcing member includes a first inner blank and a second inner blank, a first magazine that stores a large number of the first inner blanks, and a second magazine that stores a large number of the second inner blanks. Magazine,
A mandrel in which a pressing plate is disposed on each of the four side surfaces and can be moved up and down in the vertical direction;
The first inner blank supplied from the first magazine is pressed against the first pressing plate of the mandrel, and both side portions of the first inner blank are connected to the first pressing plate of the mandrel. The U-shaped protrusions are formed on the first inner blank by pressing against the side edges of the adjacent third pressing plate and fourth pressing plate, and both end portions of the first inner blank are connected to the third inner blank. A first bending means for pressing the edges of the pressing plate and the fourth pressing plate to bend the both end portions at a substantially right angle;
The second inner blank supplied from the second magazine is pressed against the second pressing plate on the back side of the first pressing plate of the mandrel, and both side portions of the second inner blank are The U-shaped projections are formed on the second inner blank by pressing against the sides of the third and fourth pressing plates adjacent to the second pressing plate of the mandrel, and the second A second bending means for pressing both end portions of the inner blank against the edge portions of the third pressing plate and the fourth pressing plate and bending the both end portions at substantially right angles;
A third end connecting the one end of the first inner blank and the one end of the second inner blank by pressing the bent one ends of the first inner blank and the second inner blank against the third pressing plate. Bending means;
The other end of the first inner blank and the second inner blank that are bent is pressed against the fourth pressing plate to connect the other end of the first inner blank and the other end of the second inner blank. A fourth bending means;
And the first to fourth bending means form a cross-shaped cylindrical reinforcing member with a cross-section,
Gluing means for gluing to the outer surface of the outer four surfaces of the cylindrical reinforcing member;
Holding means for holding the box whose upper surface is open;
After the cylindrical reinforcing member mounted on the mandrel and glued is inserted into the inside of the box held by the holding means, the first to fourth pressing plates are pressed outward, and the cylindrical reinforcing member is pressed. Pressure contact means for pressing the outer four side surfaces of the member against the inner surface of the box;
A box making apparatus for packaging boxes.

In a box making apparatus for manufacturing a packaging box with improved strength by installing an octagonal cylindrical reinforcing member inside a rectangular parallelepiped or cubic box,
The tubular reinforcing member is composed of two inner blanks,
A magazine for accumulating a large number of the inner blanks;
Distribution means for distributing the inner blank accumulated in the magazine to a first inner blank supply section and a second inner blank supply section facing each other;
A mandrel in which a pressing plate is disposed on each of the four side surfaces and can be moved up and down in the vertical direction;
The first inner blank supplied from the first magazine is pressed against the first pressing plate of the mandrel, and both side portions of the first inner blank are connected to the first pressing plate of the mandrel. The U-shaped protrusions are formed on the first inner blank by pressing against the side edges of the adjacent third pressing plate and fourth pressing plate, and both end portions of the first inner blank are connected to the third inner blank. A first bending means for pressing the edges of the pressing plate and the fourth pressing plate to bend the both end portions at a substantially right angle;
The second inner blank supplied from the second magazine is pressed against the second pressing plate on the back side of the first pressing plate of the mandrel, and both side portions of the second inner blank are The U-shaped projections are formed on the second inner blank by pressing against the sides of the third and fourth pressing plates adjacent to the second pressing plate of the mandrel, and the second A second bending means for pressing both end portions of the inner blank against the edge portions of the third pressing plate and the fourth pressing plate and bending the both end portions at substantially right angles;
A third end connecting the one end of the first inner blank and the one end of the second inner blank by pressing the bent one ends of the first inner blank and the second inner blank against the third pressing plate. Bending means;
The other end of the first inner blank and the second inner blank that are bent is pressed against the fourth pressing plate to connect the other end of the first inner blank and the other end of the second inner blank. A fourth bending means;
And the first to fourth bending means form a cross-shaped cylindrical reinforcing member with a cross-section,
Gluing means for gluing to the outer surface of the outer four surfaces of the cylindrical reinforcing member;
Holding means for holding the box whose upper surface is open;
After the cylindrical reinforcing member mounted on the mandrel and glued is inserted into the inside of the box held by the holding means, the first to fourth pressing plates are pressed outward, and the cylindrical reinforcing member is pressed. Pressure contact means for pressing the outer four side surfaces of the member against the inner surface of the box;
A box making apparatus for packaging boxes.

The said 1st-4th press board was equipped with the suction means which sucks and fixes the 1st inner blank and the 2nd inner blank which were pressed, Either of Claim 1 or Claim 2 characterized by the above-mentioned. Box making device for crab packaging box.

The first to fourth bending means are disposed above the box, and the gluing means is arranged on the outer four surfaces of the reinforcing member while the cylindrical reinforcing member is lowered into the box together with the mandrel. box manufacturing apparatus of a packaging box according to any one of claims 1 to 3 to the outer surface, characterized in that spraying glue.

The third folding means has a pressing metal fitting for pressing the inner blank against the third pressing plate side, and the fourth bending means is for pressing the inner blank against the fourth pressing plate side. It has a clamping shoe, wherein the pressing bracket, packing box box manufacturing apparatus according to any one of claims 1 to 4, characterized in that fins are formed on the pressing surface.

The said holding | maintenance means comprised the pressing plate for receiving the pressing force by the said 1st-4th pressing plate, The manufacture of the packaging box of any one of Claim 1 thru | or 5 characterized by the above-mentioned. Box device.

A box supply conveyor for transporting the box from the upstream side to the descending part of the mandrel, and a box feed conveyor for sending the box after the cylindrical reinforcing member is inserted to the downstream side. box manufacturing apparatus of the packaging box according to any one of claims 1 to 6, characterized in.

In a box making method for manufacturing a packaging box with improved strength by installing an octagonal cylindrical reinforcing member inside a rectangular parallelepiped or cubic box,
A step of accumulating a large number of inner blanks;
Supplying each of the first inner blank and the second inner blank constituting the tubular reinforcing member;
Forming a U-shaped protrusion at each of the substantially central portions of the first inner blank and the second inner blank;
Bending the ends of the first inner blank and the second inner blank formed with the U-shaped projections at substantially right angles; and
Connecting the end portions of the first inner blank and the second inner blank, the end portions of which are bent substantially at right angles, to form a cross-shaped cylindrical reinforcing member having a cross section;
Applying glue to the outer surfaces of the outer four surfaces of the tubular reinforcing member;
Holding the box in an open top state;
After the glued cylindrical reinforcing member is inserted into the held box body, the cylindrical reinforcing member is pressed against the inner surface of the box body from the inside of the outer four surfaces of the cylindrical reinforcing member. And a step of crimping the inside of the box and deforming and fixing the cross-shaped cross section with a width into an octagonal cross section.