JP3838863B2 - Cardboard packaging container, cardboard packaging container molding method and molding apparatus - Google Patents

Cardboard packaging container, cardboard packaging container molding method and molding apparatus Download PDF

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JP3838863B2
JP3838863B2 JP2000349245A JP2000349245A JP3838863B2 JP 3838863 B2 JP3838863 B2 JP 3838863B2 JP 2000349245 A JP2000349245 A JP 2000349245A JP 2000349245 A JP2000349245 A JP 2000349245A JP 3838863 B2 JP3838863 B2 JP 3838863B2
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flange portion
lid
lower flange
side wall
packaging container
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JP2002154519A (en
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栄一 霜村
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三和紙工株式会社
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Description

【0001】
【発明の属する技術分野】
この発明は、身部分と蓋部分とがヒンジ部で連結された紙製包装用容器、この紙製包装用容器の身部分と蓋部分とを、厚紙に絞り加工(プレス加工)を施して形成する紙製包装用容器成形方法および成形装置に関するものである。
【0002】
【従来の技術】
従来、周回して立ち上がる下側側壁部が下底部の周縁に連設され、周回する下側フランジ部が下側側壁部の上端に連設された身部分と、周回して立ち下がる上側側壁部が上底部の周縁に連設され、下側フランジ部と対向すべく周回する上側フランジ部が上側側壁部の下端に連設された蓋部分と、下側フランジ部の一部分と上側フランジ部の一部分とを折り曲げ可能に連結するヒンジ部とからなる紙製包装用容器を成形する場合、厚紙に、例えば身部分を、身部分用成形雌型、身部分用成形雄型および身部分用紙押さえ機構を備えた身部分成形装置で成形した後、蓋部分を、蓋部分用成形雌型、蓋部分用成形雄型および蓋部分用紙押さえ機構を備えた蓋部分成形装置で成形する。
なお、ヒンジ部分は、身部分または蓋部分を成形する際に成形するか、単独で成形する。
また、身部分成形装置と蓋部分成形装置とは、同一のものであってもよい。
【0003】
このように身部分と蓋部分とを別々に成形するのは、身部分と蓋部分とを同時に成形すると、身部分と蓋部分とを連結する部分(両フランジ部の一部)に方向の異なる引っ張り力が発生し、その部分が破れるからである。
【0004】
【発明が解決しようとする課題】
従来の紙製包装用容器は、両フランジ部を水平面状に成形していたので、ヒンジ部を中心にして蓋部分を回動させ、蓋部分で身部分を閉じると、両フランジ部の周縁に隙間が発生してしまい、外観の見栄えが悪く、商品価値を低下させていた。
また、身部分と蓋部分とを別々に成形するので、成形加工に時間がかかり、生産性が低いなどの不都合があった。
【0005】
この発明は、上記したような不都合を解消するためになされたもので、蓋部分で身部分を閉じても、両フランジ部の周縁に隙間が発生せずに外観の見栄えがよく、商品価値を向上させることのできる紙製包装用容器、この紙製包装用容器を生産性よく成形することのできる紙製包装用容器成形方法および成形装置を提供するものである。
【0006】
【課題を解決するための手段】
この発明は、周回して立ち上がる下側側壁部が下底部の周縁に連設され、周回する下側フランジ部が下側側壁部の上端に連設された身部分と、周回して立ち下がる上側側壁部が上底部の周縁に連設され、下側フランジ部と対向すべく周回する上側フランジ部が上側側壁部の下端に連設された蓋部分と、下側フランジ部の一部分と上側フランジ部の一部分とを折り曲げ可能に連結するヒンジ部とからなる紙製包装用容器において、下側フランジ部を上側へ拡開させるとともに、上側フランジ部を下側へ拡開させ、蓋部分で身部分を閉じた状態で下側フランジ部と上側フランジ部とが周縁で隙間なく当接するようにしたものである。
【0007】
また、他の発明は、周回して立ち上がる下側側壁部が下底部の周縁に連設され、周回する下側フランジ部が下側側壁部の上端に連設された身部分と、周回して立ち下がる上側側壁部が上底部の周縁に連設され、下側フランジ部と対向すべく周回する上側フランジ部が上側側壁部の下端に連設された蓋部分と、下側フランジ部の一部分と上側フランジ部の一部分とを折り曲げ可能に連結するヒンジ部とからなる紙製包装用容器の、身部分と蓋部分とを絞り加工で成形する紙製包装用容器成形方法において、第1紙押さえ機構で挟み込んだ厚紙に第1雌型と第1雄型とで絞り加工を施し、下側フランジ部が上側へ拡開する身部分と、上側フランジ部が下側へ拡開する蓋部分との一方を形成した後、第1雌型と第1雄型とによって下側フランジ部が上側へ拡開する身部分と、上側フランジ部が下側へ拡開する蓋部分との一方が形成された厚紙を第2紙押さえ機構で挟み込んで第2雌型と第2雄型とで絞り加工を施すことにより、下側フランジ部が上側へ拡開する身部分と、上側フランジ部が下側へ拡開する蓋部分との他方を形成し、蓋部分で身部分を閉じた状態で下側フランジ部と上側フランジ部とが周縁で隙間なく当接する方法である。
【0008】
さらに、他の発明は、周回して立ち上がる下側側壁部が下底部の周縁に連設され、周回する下側フランジ部が下側側壁部の上端に連設された身部分と、周回して立ち下がる上側側壁部が上底部の周縁に連設され、下側フランジ部と対向すべく周回する上側フランジ部が上側側壁部の下端に連設された蓋部分と、下側フランジ部の一部分と上側フランジ部の一部分とを折り曲げ可能に連結するヒンジ部とからなる紙製包装用容器の、身部分と蓋部分とを絞り加工で成形する紙製包装用容器成形装置において、厚紙を挟み込む第1紙押さえ機構と、この第1紙押さえ機構で挟み込んだ厚紙に絞り加工を施し、下側フランジ部が上側へ拡開する身部分と、上側フランジ部が下側へ拡開する蓋部分との一方を形成する第1雌型および第1雄型と、この第1雌型および第1雄型によって下側フランジ部が上側へ拡開する身部分と、上側フランジ部が下側へ拡開する蓋部分との一方が形成された厚紙を挟み込む第2紙押さえ機構と、この第2紙押さえ機構で挟み込んだ厚紙に絞り加工を施し、下側フランジ部が上側へ拡開する身部分と、上側フランジ部が下側へ拡開する蓋部分との他方を形成する第2雌型および第2雄型とを備え、蓋部分で身部分を閉じた状態で下側フランジ部と上側フランジ部とが周縁で隙間なく当接するものである。
そして、第1雌型と第2雌とを一つの雌型で構成するのが望ましい。
【0009】
【発明の実施の形態】
以下、この発明の実施形態を図に基づいて説明する。
図1はこの発明の一実施形態である紙製包装用容器の斜視図、図2は図1のA−A線およびB−B線による拡大切断端面図、図3は図1のC−C線による拡大断面図、図4は図1に示した紙製包装用容器を閉じた状態の拡大平面図、図5は図4のD−D線による拡大断面図、図6は図4のE−E線による拡大断面図である。
【0010】
これらの図において、1は紙製包装用容器を示し、身部分2と、この身部分2を閉じる蓋部分7と、身部分2と蓋部分7とを折り曲げ可能に連結するヒンジ部12とで構成されている。
上記した身部分2は、略正方形の下底部3と、この下底部3の周縁に連設され、周回して所定の角度で立ち上がる下側側壁部4と、この下側側壁部4の上端に連設され、周回する下側フランジ部5とで構成されている。
そして、下底部3を挟んでヒンジ部12と対向する下側フランジ部5の部分に、後述する切欠11の縁11aを係止させる円弧状の係止スリット6が設けられている。
【0011】
また、蓋部分7は、下底部3と同じ略正方形の上底部8と、この底部8の周縁に連設され、周回して所定の角度で立ち下がる(図1〜図3では立ち上がっている。)上側側壁部9と、この上側側壁部9の上端に連設され、下側フランジ部5と対向すべく周回する上側フランジ部10とで構成されている。
そして、上底部8を挟んでヒンジ部12と対向する上側フランジ部10の部分に、係止スリット6に縁11aが係合する切欠11が設けられている。
【0012】
なお、下側フランジ部5は、図2、図3、図5および図6に示すように、ヒンジ部12に連なる部分を除いたコ字状の部分が上側へ拡開した形状とされ、また、上側フランジ部10は、図2、図3、図5および図6に示すように、ヒンジ部12に連なる部分を除いたコ字状の部分が下側へ拡開した形状とされている。
しかし、下側および上側フランジ部5,10のヒンジ部12に連なり、前述した下側および上側フランジ部5,10のコ字状の部分に連なる端部分は、上側または下側へ拡開している。
【0013】
次に、紙製包装用容器1の閉じ方について説明する。
まず、図1に示すように、ヒンジ部12を中心にして蓋部分7を回動させ、蓋部分7を身部分2に重ねる。
このように蓋部分7を身部分2に重ねると、前述したように、下側フランジ部5が上側へ拡開し、また、上側フランジ部10が下側へ拡開しているので、図5および図6に示すように、下側フランジ部5と上側フランジ部10とは周縁で当接し、両フランジ部5,10の周縁に隙間が発生しなくなる。
【0014】
次に、係止スリット6の外側の下側フランジ部5の部分を、図6において反時計方向へ回動させ、下側フランジ部5の間に切欠11の縁11aを挿入した後、係止スリット6の外側の下側フランジ部5の部分を元の状態へ自身の弾性力で復帰させると、図4〜図6に示すように、紙製包装用容器1は閉じた状態を維持する。
なお、紙製包装用容器1を開ける場合は、上述した手順を反対に行うことにより、図1に示すように、紙製包装用容器1を開けることができる。
【0015】
上述したように、この発明の紙製包装用容器1の一実施形態によれば、下側フランジ部5を上側へ拡開させるとともに、上側フランジ部10を下側へ拡開させ、蓋部分7で身部分2を閉じた状態で下側フランジ部5と上側フランジ部10とが周縁で隙間なく当接するようにしたので、蓋部分7で身部分2を閉じても、両フランジ部5,10の周縁に隙間が発生せず、外観の見栄えがよく、商品価値を向上させることができる。
【0016】
図7は図1に示した紙製包装用容器を成形する紙製包装用容器成形装置の一実施形態の概略構成を示す断面図、図8は図7に示した紙製包装用容器成形装置の雌型を除いた状態の平面図、図9および図10は紙製包装用容器を成形する紙製包装用容器成形装置の成形過程を示す説明図であり、図1〜図6と同一部分に同一符号を付して説明を省略する。
【0017】
これらの図において、Pは紙製包装用容器1を成形するための厚紙を示す。
21は紙製包装用容器成形装置を示し、身部分2、蓋部分7およびヒンジ部12を成形する雌型22と、身部分2を成形する第1雄型23と、蓋部分7を成形する第2雄型26と、身部分2を成形する前に厚紙Pを挟み込み、ヒンジ部12を成形する第1紙押さえ機構27と、蓋部分7を成形する前に身部分2を成形した後の厚紙Pを挟み込む第2紙押さえ機構32と、第1雄型23および第2雄型26を収容するとともに、第1および第2紙押さえ機構27,32を収容する収容凹部35aを有するベース35とで構成されている。
【0018】
上記した第1雄型23は、身部分2を成形する第1雄型本体24と、この第1雄型本体24の上面を第2雄型26の上面よりも少し高い位置へ水平状態に持ち上げ、第1雄型本体24を水平状態で上下方向へ移動可能に伸縮する弾性体としての複数のコイルスプリング25とで構成されている。
【0019】
また、第1紙押さえ機構27は、雌型22の身部分2を成形する周囲部分(下側フランジ部5と、上側フランジ部10の一部とを形成する部分)と、ヒンジ部12を成形するとともに、ヒンジ部12の両側に位置する両フランジ部5,10の部分を雌型22とで挟み込む平面視I字状の紙押さえ28と、この紙押さえ28の上面を第1雄型本体24の上面と同じ高さ位置へ水平状態に持ち上げ、紙押さえ28を水平状態で上下方向へ移動させるために伸縮する弾性体としての複数のコイルスプリング29と、第1雄型本体24を紙押さえ28とで囲む平面視コ字状の紙押さえ30と、この紙押さえ30の上面を第1雄型本体24の上面と同じ高さ位置へ水平状態に持ち上げ、紙押さえ30を水平状態で上下方向へ移動させるために伸縮する弾性体としての複数のコイルスプリング31とで構成されている。
【0020】
さらに、第2紙押さえ機構32は、雌型22の蓋部分7を成形する周囲部分(前述したコ字状部分と対向する部分)と、第2雄型26を紙押さえ28とで囲む平面視コ字状の紙押さえ33と、この紙押さえ33の上面を第2雄型26の上面と同じ高さ位置へ水平状態に持ち上げ、紙押さえ33を水平状態で上下方向へ移動させるために伸縮する弾性体としての複数のコイルスプリング34とで構成されている。
【0021】
なお、雌型22は、図示を省略した駆動機構によって上下方向へ水平状態で移動させられるようになっている。
また、第1雄型本体24、第1および第2紙押さえ機構27,32の各紙押さえ28,30,33は、図示を省略したストッパ機構により、図7の位置よりも上方へ行かないようになっている。
そして、紙押さえ30,33の上面は外側へ下降する傾斜面とされ、紙押さえ28の上面は、ヒンジ部12を成形する部分を除いて平面であるが、紙押さえ30,33に連なる両端部分が外側へ下降する傾斜面とされている。
また、コイルスプリング29の紙押さえ28を付勢する付勢力は、紙押さえ30,33を付勢するコイルスプリング31,34の付勢力よりも強く設定されている。
【0022】
次に、紙製包装用容器成形装置21で紙製包装用容器1を成形する動作、すなわち成形方法について説明する。
まず、図示を省略した駆動機構によって雌型22を、図7に示すように、雌型22と第1雄型23との間へ厚紙Pを挿入できる高さへ上昇させる。
次に、図7に示すように、雌型22と、第1および第2雄型23,26、紙押さえ28,30,33との間へ厚紙Pを挿入する。
そして、駆動機構によって雌型22を下降させる。
【0023】
このように雌型22を下降させると、まず、図9に示すように、第1紙押さえ機構27とで厚紙Pを挟み込んだ後、雌型22の押圧力によってコイルスプリング29,31が収縮することにより、紙押さえ28,30が下降するので、雌型22と第1雄型本体24とによって厚紙Pに絞り加工を施し、身部分2を成形するとともに、ヒンジ部12を成形する。
この身部分2の成形時、コイルスプリング29の紙押さえ28を付勢する付勢力が、紙押さえ30を付勢するコイルスプリング31の付勢力よりも強く設定されているので、雌型22と紙押さえ30とで挟み込んでいる部分の厚紙Pが内側へ引き込まれる。
【0024】
さらに雌型22を下降させると、図10に示すように、第2紙押さえ機構32とで厚紙Pを挟み込んだ後、雌型22の押圧力によってコイルスプリング34が収縮することにより、紙押さえ33が下降するので、雌型22と第2雄型26とによって厚紙Pに絞り加工を施し、蓋部分7を成形する。
この蓋部分7の成形時、コイルスプリング29の紙押さえ28を付勢する付勢力が、紙押さえ33を付勢するコイルスプリング34の付勢力よりも強く設定されているので、雌型22と紙押さえ33とで挟み込んでいる部分の厚紙Pが内側へ引き込まれる。
【0025】
そして、図10に示すように、雌型22を最下端まで下降させて身部分2、蓋部分7およびヒンジ部12の成形が終了したならば、図7に示すように、図示を省略した駆動機構によって雌型22を上昇させた後、身部分2、蓋部分7およびヒンジ部12が成形された厚紙Pを抜き取る。
このように雌型22を上昇させると、第1雄型本体24、紙押さえ28,30,33はコイルスプリング25,29,31,34の付勢力によって元の位置まで上昇する。
以後は、同様な動作により、厚紙Pに身部分2、蓋部分7およびヒンジ部12を形成することができる。
【0026】
なお、身部分2、蓋部分7およびヒンジ部12を成形した厚紙Pを所定の裁断機構にセットして図1に示す形状に裁断し、下側フランジ部5に係止スリット6を設けるとともに、上側フランジ部10に切欠11を設ける。
【0027】
上述したように、この発明の紙製包装用容器成形装置21の一実施形態によれば、雌型22を上下動させる一行程で身部分2、蓋部分7およびヒンジ部12を成形できるので、紙製包装用容器1を生産性よく成形することができる。
そして、下側フランジ部5を上側へ拡開させるとともに、上側フランジ部10を下側へ拡開させ、蓋部分7で身部分2を閉じた状態で下側フランジ部5と上側フランジ部10とが周縁で隙間なく当接するようにしたので、蓋部分7で身部分2を閉じても、両フランジ部5,10の周縁に隙間が発生せず、外観の見栄えがよく、商品価値を向上させることができる。
さらに、身部分2を成形する雌型(第1雌型)と、蓋部分7を成形する雌型(第2雌型)と、ヒンジ部12を成形するヒンジ部成形雌型とを一つの雌型22にしたので、また、第1および第2紙押さえ機構27,32を、雌型22を用いて構成したので、構成部品を少なくできるとともに、構成を簡単にすることができる。
【0028】
上記した実施形態では、身部分2とヒンジ部12とを先に成形し、蓋部分7を後で成形したが、蓋部分7とヒンジ部12とを先に成形し、身部分2を後で成形したり、身部分2と蓋部分7とを成形した後、ヒンジ部12を別の装置で成形してもよい。
また、身部分2を成形する雌型と、蓋部分7を成形する雌型と、ヒンジ部12を成形するヒンジ部成形雌型を一つの雌型22にしたが、各雌型を別々に構成したり、身部分2を成形する雌型とヒンジ部成形雌型とを一つの雌型にし、蓋部分7を成形する雌型を別の雌型としたり、蓋部分7を成形する雌型とヒンジ部成形雌型とを一つの雌型にし、身部分2を成形する雌型を別の雌型としても、同様に紙製包装用容器1を成形することができる。
【0029】
さらに、第1および第2紙押さえ機構27,32を、雌型22の一部を用いて構成する例を示したが、雌型と別に第1および第2紙押さえ機構27,32を構成する部材を設けてもよい。
また、雌型22を移動させる例を示したが、雌型22側を固定し、他の部分側を移動させる構成としてもよい。
【0030】
【発明の効果】
以上のように、この発明の紙製包装用容器によれば、下側フランジ部を上側へ拡開させるとともに、上側フランジ部を下側へ拡開させ、蓋部分で身部分を閉じた状態で下側フランジ部と上側フランジ部が周縁で隙間なく当接するようにしたので、蓋部分で身部分を閉じても、両フランジ部の周縁に隙間が発生せず、外観の見栄えがよく、商品価値を向上させることができる。
【0031】
また、この発明の紙製包装用容器成形方法によれば、例えば第1および第2雌型を上下動させる一行程で、下側フランジ部を上側へ拡開させるとともに、上側フランジ部を下側へ拡開させ、蓋部分で身部分を閉じた状態で下側フランジ部と上側フランジ部とが周縁で隙間なく当接する厚紙製包装用容器を成形できるので、紙製包装用容器を生産性よく成形することができる。
【0032】
さらに、この発明の紙製包装用容器成形装置によれば、例えば第1および第2雌型を上下動させる一行程で、下側フランジ部を上側へ拡開させるとともに、上側フランジ部を下側へ拡開させ、蓋部分で身部分を閉じた状態で下側フランジ部と上側フランジ部とが周縁で隙間なく当接する厚紙製包装用容器を成形できるので、紙製包装用容器を生産性よく成形することができる。
さらに、第1雌型と、第2雌型とを一つの雌型にしたので、構成部品を少なくできるとともに、構成を簡単にすることができる。
【図面の簡単な説明】
【図1】 この発明の一実施形態である紙製包装用容器の斜視図である。
【図2】 図1のA−A線およびB−B線による拡大切断端面図である。
【図3】 図1のC−C線による拡大断面図である。
【図4】 図1に示した紙製包装用容器を閉じた状態の拡大平面図である。
【図5】 図4のD−D線による拡大断面図である。
【図6】 図4のE−E線による拡大断面図である。
【図7】 図1に示した紙製包装用容器を成形する紙製包装用容器成形装置の一実施形態の概略構成を示す断面図である。
【図8】 図7に示した紙製包装用容器成形装置の雌型を除いた状態の平面図である。
【図9】 紙製包装用容器を成形する紙製包装用容器成形装置の成形過程を示す説明図である。
【図10】 紙製包装用容器を成形する紙製包装用容器成形装置の成形過程を示す説明図である。
【符号の説明】
紙製包装用容器
2 身部分
3 下底部
4 下側側壁部
5 下側フランジ部
6 係止スリット
7 蓋部分
8 上底部
9 上側側壁部
10 上側フランジ部
11 切欠
11a 縁
12 ヒンジ部
21 紙製包装用容器成形装置
22 雌型
23 第1雄型
24 第1雄型本体
25 コイルスプリング
26 第2雄型
27 第1紙押さえ機構
28 紙押さえ
29 コイルスプリング
30 紙押さえ
31 コイルスプリング
32 第2紙押さえ機構
33 紙押さえ
34 コイルスプリング
35 ベース
35a 収容凹部
P 厚紙
[0001]
BACKGROUND OF THE INVENTION
The present invention, body portion and lid portion and is linked thickness Paper packaging container by a hinge portion and a body portion and a lid portion of the thickness Paper packaging containers, subjected to a drawing process to cardboard (pressing) relates thick paper packaging container molding method and molding apparatus that form Te.
[0002]
[Prior art]
Conventionally, a lower side wall portion that circulates and rises is connected to the periphery of the lower bottom portion, a lower flange portion that circulates is connected to the upper end of the lower side wall portion, and an upper side wall portion that circulates and falls Is connected to the peripheral edge of the upper bottom part, and the upper flange part that goes around to face the lower flange part is connected to the lower end of the upper side wall part, a part of the lower flange part, and a part of the upper flange part when forming a hinge between the thickness paper packaging container consisting of foldably connected bets, cardboard, for example, only partially, only the portion for molding the female, body parts for forming male and only partial paper pressing mechanism Then, the lid part is molded by a lid part molding apparatus having a lid part molding female die, a lid part molding male die, and a lid part paper pressing mechanism.
The hinge portion is formed when the body portion or the lid portion is formed, or is formed independently.
Further, the body part molding device and the lid part molding device may be the same.
[0003]
In this way, the body part and the lid part are molded separately. When the body part and the lid part are molded at the same time, the direction of the part connecting the body part and the lid part (part of both flanges) is different. This is because a tensile force is generated and the portion is torn.
[0004]
[Problems to be solved by the invention]
Conventional thick Paper packaging container, since the flange portions has been formed into a horizontal plane, and a hinge portion at the center by rotating the lid portion to close the body portion with a lid portion, the peripheral edge of the flange portions There was a gap between them, the appearance was not good, and the commercial value was reduced.
Further, since the body part and the lid part are molded separately, it takes time for the molding process and there is a disadvantage that productivity is low.
[0005]
The present invention has been made to solve the above-described disadvantages, and even when the body part is closed by the lid part, there is no gap between the peripheral edges of both flange parts, the appearance is good, and the commercial value the thickness paper packaging containers which can be improved, there is provided a thickness paper packaging container molding method and molding apparatus capable of forming good productivity the thickness paper packaging containers.
[0006]
[Means for Solving the Problems]
In this invention, a lower side wall portion that circulates and rises is connected to the periphery of the lower bottom portion, and a lower flange portion that circulates is connected to the upper end of the lower side wall portion, and an upper portion that circulates and falls A lid portion in which a side wall portion is connected to the periphery of the upper bottom portion, and an upper flange portion that goes around to face the lower flange portion is connected to the lower end of the upper side wall portion; a part of the lower flange portion; and an upper flange portion in a portion the hinge portion and the thickness paper packaging container consisting of foldably connected to, together to expanding the lower flange portion to the upper, is expanded upper flange portion to the lower, body portion with a lid portion The lower flange portion and the upper flange portion are in contact with each other without a gap at the periphery in a state in which is closed.
[0007]
In another aspect of the invention, the lower side wall portion that circulates and rises is connected to the periphery of the lower bottom portion, and the lower flange portion that circulates circulates with the body portion that is connected to the upper end of the lower side wall portion. A lid portion in which an upper side wall portion that falls is connected to the periphery of the upper bottom portion, an upper flange portion that circulates to face the lower flange portion is connected to the lower end of the upper side wall portion, and a part of the lower flange portion the hinge portion and the thickness paper packaging container consisting of foldably connected to a portion of the upper flange portion, the body portion and the lid portion and the diaphragm thickness paper packaging container molding method for molding the machining, the first sheet A body part in which the first female mold and the first male mold are subjected to drawing processing on the cardboard sandwiched by the holding mechanism, and the lower flange part expands upward, and a lid part in which the upper flange part expands downward lower flange while after forming a, the first female and first male by In There a body portion diverging upwardly, the upper flange portion and the second female mold and the second male mold sandwiches the cardboard one is formed between the cover portion diverging downwardly in the second paper pressing mechanism By drawing, the other part of the body part where the lower flange part expands upward and the lid part where the upper flange part expands downward is formed , and the body part is closed with the lid part. Ru method der where the lower flange and the upper flange portion abuts without a gap in the periphery.
[0008]
Furthermore, another invention is such that a lower side wall portion that circulates and rises is connected to the periphery of the lower bottom portion, and a lower flange portion that circulates circulates with a body portion that is connected to the upper end of the lower side wall portion. A lid portion in which an upper side wall portion that falls is connected to the periphery of the upper bottom portion, an upper flange portion that circulates to face the lower flange portion is connected to the lower end of the upper side wall portion, and a part of the lower flange portion the hinge portion and the thickness paper packaging container consisting of foldably connected to a portion of the upper flange portion, the body portion and the lid portion and the thickness paper packaging container molding apparatus for molding with drawing the sandwich cardboard A first paper pressing mechanism, a body portion in which the thick paper sandwiched by the first paper pressing mechanism is subjected to drawing processing, and the lower flange portion expands upward, and a lid portion in which the upper flange portion expands downward A first female mold and a first male mold forming one of The second sheet to sandwich the body portion lower flange portion is expanded upward, the cardboard one is formed with a lid portion in which the upper flange portion is expanded to the lower side by the first female and first male The other part of the presser mechanism and the body part in which the lower flange part expands upward and the lid part in which the upper flange part expands downward are applied to the thick paper sandwiched by the second paper presser mechanism. and a second female and second male form, a lower flange and the upper flange portion in the closed state of the body portion in the lid portion is shall be abut without a gap in the periphery.
And it is desirable that the first female mold and the second female are constituted by one female mold.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Figure 1 is a perspective view of a thick sheet made of packaging containers according to an embodiment of the present invention, Figure 2 is an enlarged cross-sectional end view along line A-A and line B-B of FIG. 1, FIG. 3 of FIG. 1 C- enlarged cross-sectional view taken along line C, 4 is an enlarged plan view of a closed thick paper packaging container shown in FIG. 1, FIG. 5 is an enlarged sectional view according to line D-D of FIG. 4, 6 4 It is an expanded sectional view by the EE line.
[0010]
In these drawings, 1 indicates a container packaging made of thick paper, a body portion 2, a lid portion 7 for closing the body portion 2, a hinge portion 12 that foldably connected to the body portion 2 and lid portion 7 It consists of
The body part 2 described above is formed in a substantially square lower bottom part 3, a lower side wall part 4 that is connected to the periphery of the lower bottom part 3, rises at a predetermined angle, and is attached to the upper end of the lower side wall part 4. The lower flange portion 5 is provided continuously and circulates.
An arc-shaped locking slit 6 that locks an edge 11a of a notch 11, which will be described later, is provided in a portion of the lower flange portion 5 that faces the hinge portion 12 with the lower bottom portion 3 interposed therebetween.
[0011]
The lid portion 7, the upper base portion 8 of the same substantially square with the lower bottom 3, the upper is provided continuously on the peripheral edge of the bottom 8, orbiting it falls at a predetermined angle (standing up in 1 to 3 .) The upper side wall part 9 and the upper side flange part 10 are connected to the upper end of the upper side wall part 9 and circulate so as to face the lower flange part 5.
A notch 11 in which the edge 11 a engages with the locking slit 6 is provided at a portion of the upper flange portion 10 facing the hinge portion 12 with the upper bottom portion 8 interposed therebetween.
[0012]
In addition, as shown in FIG.2, FIG.3, FIG.5 and FIG. 6, the lower flange part 5 is made into the shape which the U-shaped part except the part connected to the hinge part 12 spreads upwards, and 2, 3, 5, and 6, the upper flange portion 10 has a shape in which a U-shaped portion excluding a portion continuous with the hinge portion 12 is expanded downward.
However, the end portions connected to the hinge portions 12 of the lower and upper flange portions 5 and 10 and connected to the U-shaped portions of the lower and upper flange portions 5 and 10 described above are expanded upward or downward. Yes.
[0013]
Next, a description Closing the thickness Paper packaging container 1.
First, as shown in FIG. 1, the lid portion 7 is rotated around the hinge portion 12, and the lid portion 7 is overlapped with the body portion 2.
When the lid portion 7 is overlapped with the body portion 2 in this way, as described above, the lower flange portion 5 is expanded upward, and the upper flange portion 10 is expanded downward. As shown in FIG. 6 and FIG. 6, the lower flange portion 5 and the upper flange portion 10 come into contact with each other at the periphery, and no gap is generated between the periphery of the flange portions 5 and 10.
[0014]
Next, the portion of the lower flange portion 5 outside the locking slit 6 is rotated counterclockwise in FIG. 6, and the edge 11 a of the notch 11 is inserted between the lower flange portions 5. When is returned by the elastic force portions to the original state itself of the lower flange portion 5 of the outer slit 6, as shown in FIGS. 4 to 6, the thickness paper packaging container 1 is kept closed .
In the case of opening the thickness Paper packaging container 1, by performing the above-mentioned procedure in the opposite, as shown in FIG. 1, it is possible to open the thickness Paper packaging container 1.
[0015]
As described above, according to an embodiment of the thick paper wrapping container 1 of the present invention, together to expanding the lower flange portion 5 to the upper side, it is widened upper flange portion 10 to the lower lid part 7, the lower flange portion 5 and the upper flange portion 10 are in contact with each other without any gap at the periphery, so even if the lid portion 7 closes the body portion 2, both flange portions 5, 5 are closed. No gap is generated between the ten peripheral edges, the appearance is good, and the commercial value can be improved.
[0016]
Figure 7 is a sectional view showing a schematic configuration of an embodiment of a thick sheet made of packaging container forming device for forming a thick Paper packaging container shown in FIG. 1, FIG. 8 is a manufactured thickness paper packaging shown in FIG. 7 plan view of a state in which except for female container forming device, FIGS. 9 and 10 are explanatory views showing a molding process of the thick paper wrapping container molding apparatus for molding a container packaging made of thick paper, 1 to The same parts as those in FIG.
[0017]
In these drawings, P is shows a cardboard for forming a container 1 for packaging made of thick paper.
21 shows the container forming apparatus for packaging made thick paper, forming a female 22 for molding the body portion 2, the lid portion 7 and the hinge portion 12, a first male mold 23 for molding the body portion 2, the lid portion 7 After forming the body part 2 before forming the lid part 7 and the first paper pressing mechanism 27 for forming the hinge part 12 by sandwiching the thick paper P before forming the second male mold 26 and the body part 2 A base 35 having a second paper pressing mechanism 32 for sandwiching the thick paper P, a first male mold 23 and a second male mold 26, and an accommodating recess 35a for accommodating the first and second paper pressing mechanisms 27, 32. It consists of and.
[0018]
The first male mold 23 has a first male mold body 24 for forming the body part 2 and the upper surface of the first male mold body 24 in a horizontal state to a position slightly higher than the upper surface of the second male mold 26. The first male main body 24 includes a plurality of coil springs 25 as elastic bodies that extend and contract in a horizontal state so as to be movable in the vertical direction.
[0019]
In addition, the first paper pressing mechanism 27 forms the peripheral portion (the portion forming the lower flange portion 5 and a part of the upper flange portion 10) for forming the body portion 2 of the female die 22 and the hinge portion 12. In addition, a paper presser 28 having an I-shape in plan view that sandwiches the portions of both flange portions 5, 10 located on both sides of the hinge portion 12 with the female die 22, and the upper surface of the paper presser 28 is the first male die body 24. A plurality of coil springs 29 as elastic bodies that are lifted in a horizontal state at the same height as the upper surface of the paper and moved to move the paper presser 28 in the vertical direction in the horizontal state, and the first male main body 24 to the paper presser 28 And a paper retainer 30 having a U-shape in plan view, and the upper surface of the paper retainer 30 is lifted horizontally to the same height position as the upper surface of the first male main body 24, and the paper retainer 30 is moved vertically in the horizontal state. A bullet that expands and contracts to move And a plurality of coil springs 31 as the body.
[0020]
Further, the second paper pressing mechanism 32 is a plan view of surrounding the second male die 26 with a peripheral portion (a portion facing the U-shaped portion described above) for forming the lid portion 7 of the female die 22 and the paper pressing member 28. The U-shaped paper presser 33 and the upper surface of the paper presser 33 are lifted horizontally to the same height as the upper surface of the second male mold 26, and are expanded and contracted to move the paper presser 33 up and down in the horizontal state. It comprises a plurality of coil springs 34 as elastic bodies.
[0021]
The female mold 22 is moved in the horizontal direction in the vertical direction by a drive mechanism (not shown).
Also, the paper pressers 28, 30, 33 of the first male main body 24 and the first and second paper presser mechanisms 27, 32 are not moved upward from the position of FIG. 7 by a stopper mechanism (not shown). It has become.
The upper surfaces of the paper pressers 30 and 33 are inclined surfaces that descend downward, and the upper surface of the paper presser 28 is flat except for the portion that forms the hinge portion 12, but both end portions that are continuous with the paper pressers 30 and 33. Is an inclined surface that descends outward.
The urging force for urging the paper presser 28 of the coil spring 29 is set to be stronger than the urging force of the coil springs 31, 34 for urging the paper pressers 30, 33.
[0022]
Next, the operation of forming a thick paper wrapping container 1 in a thickness Paper packaging container forming device 21, that is, the molding method will be described.
First, the female mold 22 is raised to a height at which the thick paper P can be inserted between the female mold 22 and the first male mold 23 as shown in FIG.
Next, as shown in FIG. 7, the cardboard P is inserted between the female mold 22, the first and second male molds 23 and 26, and the paper pressers 28, 30 and 33.
Then, the female die 22 is lowered by the drive mechanism.
[0023]
When the female die 22 is lowered in this way, first, as shown in FIG. 9, the coil springs 29 and 31 contract by the pressing force of the female die 22 after the thick paper P is sandwiched by the first paper pressing mechanism 27. As a result, the paper pressers 28 and 30 are lowered, so that the cardboard P is drawn by the female mold 22 and the first male mold main body 24 to form the body part 2 and the hinge part 12.
At the time of molding the body portion 2, the biasing force for biasing the paper presser 28 of the coil spring 29 is set to be stronger than the biasing force of the coil spring 31 for biasing the paper presser 30. The portion of the thick paper P sandwiched between the presser 30 is drawn inward.
[0024]
When the female die 22 is further lowered, as shown in FIG. 10, after the thick paper P is sandwiched by the second paper pressing mechanism 32, the coil spring 34 is contracted by the pressing force of the female die 22, whereby the paper pressing 33 Is lowered, the cardboard P is drawn by the female mold 22 and the second male mold 26 to form the lid portion 7.
At the time of forming the lid portion 7, the biasing force for biasing the paper presser 28 of the coil spring 29 is set to be stronger than the biasing force of the coil spring 34 for biasing the paper presser 33. The portion of the thick paper P sandwiched between the presser 33 is drawn inward.
[0025]
Then, as shown in FIG. 10, when the female die 22 is lowered to the lowermost end and the body part 2, the lid part 7 and the hinge part 12 are completely molded, as shown in FIG. After the female mold 22 is raised by the mechanism, the cardboard P on which the body part 2, the lid part 7 and the hinge part 12 are formed is extracted.
When the female die 22 is raised in this way, the first male die main body 24 and the paper pressers 28, 30, and 33 are raised to their original positions by the urging forces of the coil springs 25, 29, 31, and 34.
Thereafter, the body part 2, the lid part 7 and the hinge part 12 can be formed on the cardboard P by the same operation.
[0026]
In addition, while setting the cardboard P which shape | molded the body part 2, the cover part 7, and the hinge part 12 to a predetermined | prescribed cutting mechanism and cut | judged to the shape shown in FIG. 1, while providing the latching slit 6 in the lower flange part 5, A cutout 11 is provided in the upper flange portion 10.
[0027]
As described above, according to the thickness one embodiment of Paper packaging container forming device 21 of the present invention, body portion 2 in one stroke for vertically moving the female die 22, it is possible to mold the lid portion 7 and the hinge portion 12 it can be formed with good productivity a thickness paper packaging container 1.
Then, the lower flange portion 5 is expanded upward, the upper flange portion 10 is expanded downward, and the body portion 2 is closed by the lid portion 7. Since there is no gap at the periphery, even if the body part 2 is closed by the lid part 7, no gap is generated between the edges of the flange parts 5, 10, the appearance is good and the product value is improved. Can be made.
Further, a female mold (first female mold) that molds the body part 2, a female mold (second female mold) that molds the lid part 7, and a hinge-molded female mold that molds the hinge part 12 are combined into one female. Since the mold 22 is used, the first and second paper pressing mechanisms 27 and 32 are configured using the female mold 22, so that the number of components can be reduced and the configuration can be simplified.
[0028]
In the above-described embodiment, the body part 2 and the hinge part 12 are molded first, and the lid part 7 is molded later. However, the lid part 7 and the hinge part 12 are molded first, and the body part 2 is molded later. After forming or forming the body part 2 and the lid part 7, the hinge part 12 may be formed by another device.
Moreover, although the female mold | die which shape | molds the body part 2, the female mold | die which shape | molds the cover part 7, and the hinge part shaping | molding female mold | die which shape | molds the hinge part 12 were made into the one female mold | type 22, each female mold is comprised separately. Or a female mold for forming the body part 2 and a female mold for forming the hinge part as one female mold, a female mold for molding the lid part 7 as another female mold, or a female mold for molding the lid part 7 a hinge portion forming a female mold on one of the female, as another female a female mold for molding the body portion 2 can be formed similarly thickness paper packaging container 1.
[0029]
Furthermore, although the example which comprises the 1st and 2nd paper pressing mechanisms 27 and 32 using a part of female type | mold 22 was shown, the 1st and 2nd paper pressing mechanisms 27 and 32 are comprised separately from a female type | mold. A member may be provided.
Also, although an example of moving the female die 22, fixed to the female mold 22 side, but it may also be configured to move the other part side.
[0030]
【The invention's effect】
As described above, the state according to the thickness Paper packaging container of the present invention, which causes the expansion of the lower flange portion to the upper, is expanded upper flange portion to the lower, closed body portion with a lid portion Since the lower flange and the upper flange are in contact with each other without any gap at the periphery, no gap occurs between the edges of both flanges even when the body part is closed with the lid, and the appearance is good. Product value can be improved.
[0031]
Further, according to the thickness Paper packaging container molding method of the present invention, in one step of vertically moving for example the first and second female, with thereby expanding the lower flange portion to the upper, lower and upper flange portion It is expanded to the side, since the lower flange portion and the upper flange portion in the closed state of the body portion with the lid portion can be molded abutting cardboard packaging containers without a gap at the periphery, producing a thick sheet made of packaging containers Ru can be sexual well molded.
[0032]
Furthermore, according to the thickness Paper packaging container forming apparatus of the present invention, in one step of vertically moving for example the first and second female, with thereby expanding the lower flange portion to the upper, lower and upper flange portion It is expanded to the side, since the lower flange portion and the upper flange portion in the closed state of the body portion with the lid portion can be molded abutting cardboard packaging containers without a gap at the periphery, producing a thick sheet made of packaging containers Ru can be sexual well molded.
Furthermore, since the first female mold and the second female mold are formed into one female mold, the number of components can be reduced and the configuration can be simplified.
[Brief description of the drawings]
1 is a perspective view of a thick sheet made of packaging containers according to an embodiment of the present invention.
FIG. 2 is an enlarged end view taken along line AA and BB in FIG. 1;
FIG. 3 is an enlarged cross-sectional view taken along the line CC of FIG.
4 is an enlarged plan view of a closed thick Paper packaging container shown in FIG.
FIG. 5 is an enlarged cross-sectional view taken along line DD of FIG.
6 is an enlarged cross-sectional view taken along line EE in FIG. 4;
7 is a sectional view showing a schematic configuration of an embodiment of a thick sheet made of packaging container forming device for forming a thick Paper packaging container shown in FIG.
8 is a plan view of a state excluding the female thick Paper packaging container forming apparatus shown in FIG.
9 is an explanatory view showing a molding process of the thick paper wrapping container molding apparatus for molding a thickness Paper packaging containers.
10 is an explanatory view showing a molding process of the thick paper wrapping container molding apparatus for molding a thickness Paper packaging containers.
[Explanation of symbols]
1 thickness Paper packaging container 2 only portion 3 lower bottom 4 under the side wall portion 5 lower flange portion 6 engaging slit 7 the lid part 8 upper base 9 an upper side wall portion 10 the upper flange portion 11 notch 11a edge 12 hinge 21 thickness Paper packaging container forming apparatus 22 Female mold 23 First male mold 24 First male mold body 25 Coil spring 26 Second male mold 27 First paper pressing mechanism 28 Paper pressing 29 Coil spring 30 Paper pressing 31 Coil spring 32 Second Paper holding mechanism 33 Paper holding 34 Coil spring 35 Base 35a Containing recess P Cardboard

Claims (4)

周回して立ち上がる下側側壁部が下底部の周縁に連設され、周回する下側フランジ部が前記下側側壁部の上端に連設された身部分と、周回して立ち下がる上側側壁部が上底部の周縁に連設され、前記下側フランジ部と対向すべく周回する上側フランジ部が前記上側側壁部の下端に連設された蓋部分と、前記下側フランジ部の一部分と前記上側フランジ部の一部分とを折り曲げ可能に連結するヒンジ部とからなる紙製包装用容器において、
前記下側フランジ部を上側へ拡開させるとともに、前記上側フランジ部を下側へ拡開させ、
前記蓋部分で前記身部分を閉じた状態で前記下側フランジ部と前記上側フランジ部とが周縁で隙間なく当接する、
ことを特徴とする紙製包装用容器。
A lower side wall portion that circulates and rises is connected to the periphery of the lower bottom portion, a lower flange portion that circulates is connected to an upper end of the lower side wall portion, and an upper side wall portion that circulates and falls An upper flange portion connected to the periphery of the upper bottom portion and circulated to face the lower flange portion is connected to the lower end of the upper side wall portion; a portion of the lower flange portion; and the upper flange in the hinge portion and the thickness paper packaging container consisting of foldably connected to a portion of the section,
The lower flange portion is expanded upward, and the upper flange portion is expanded downward,
The lower flange portion and the upper flange portion are in contact with each other without a gap at the periphery in a state where the body portion is closed by the lid portion.
The thickness Paper packaging container, characterized in that.
周回して立ち上がる下側側壁部が下底部の周縁に連設され、周回する下側フランジ部が前記下側側壁部の上端に連設された身部分と、周回して立ち下がる上側側壁部が上底部の周縁に連設され、前記下側フランジ部と対向すべく周回する上側フランジ部が前記上側側壁部の下端に連設された蓋部分と、前記下側フランジ部の一部分と前記上側フランジ部の一部分とを折り曲げ可能に連結するヒンジ部とからなる紙製包装用容器の、前記身部分と前記蓋部分とを絞り加工で成形する紙製包装用容器成形方法において、
第1紙押さえ機構で挟み込んだ厚紙に第1雌型と第1雄型とで絞り加工を施し、前記下側フランジ部が上側へ拡開する前記身部分と、前記上側フランジ部が下側へ拡開する前記蓋部分との一方を形成した後、
前記第1雌型と前記第1雄型とによって前記下側フランジ部が上側へ拡開する前記身部分と、前記上側フランジ部が下側へ拡開する前記蓋部分との一方が形成された前記厚紙を第2紙押さえ機構で挟み込んで第2雌型と第2雄型とで絞り加工を施すことにより、前記下側フランジ部が上側へ拡開する前記身部分と、前記上側フランジ部が下側へ拡開する前記蓋部分との他方を形成し、
前記蓋部分で前記身部分を閉じた状態で前記下側フランジ部と前記上側フランジ部とが周縁で隙間なく当接する、
ことを特徴とする紙製包装用容器成形方法。
A lower side wall portion that circulates and rises is connected to the periphery of the lower bottom portion, a lower flange portion that circulates is connected to an upper end of the lower side wall portion, and an upper side wall portion that circulates and falls An upper flange portion connected to the periphery of the upper bottom portion and circulated to face the lower flange portion is connected to the lower end of the upper side wall portion; a portion of the lower flange portion; and the upper flange the hinge portion and the thickness paper packaging container consisting of foldably connected to a portion of the part, in the body portion and the lid portion and the diaphragm thickness paper packaging container molding method for molding the machining,
The cardboard sandwiched by the first paper pressing mechanism is drawn with a first female die and a first male die, and the body portion where the lower flange portion expands upward and the upper flange portion downward. After forming one of the lid portions to expand ,
It said body portion in which the lower flange portion by the first male mold and the first female mold is expanded upward, one with the cover portion where the upper flange portion is expanded to the lower side is formed The body portion in which the lower flange portion expands upward by sandwiching the thick paper with a second paper pressing mechanism and drawing the second female die and the second male die, and the upper flange portion Forming the other of the lid portion that expands downward ;
The lower flange portion and the upper flange portion are in contact with each other without a gap at the periphery in a state where the body portion is closed by the lid portion .
Container forming method for steel thickness paper packaging, characterized in that.
周回して立ち上がる下側側壁部が下底部の周縁に連設され、周回する下側フランジ部が前記下側側壁部の上端に連設された身部分と、周回して立ち下がる上側側壁部が上底部の周縁に連設され、前記下側フランジ部と対向すべく周回する上側フランジ部が前記上側側壁部の下端に連設された蓋部分と、前記下側フランジ部の一部分と前記上側フランジ部の一部分とを折り曲げ可能に連結するヒンジ部とからなる紙製包装用容器の、前記身部分と前記蓋部分とを絞り加工で成形する紙製包装用容器成形装置において、
厚紙を挟み込む第1紙押さえ機構と、
この第1紙押さえ機構で挟み込んだ前記厚紙に絞り加工を施し、前記下側フランジ部が上側へ拡開する前記身部分と、前記上側フランジ部が下側へ拡開する前記蓋部分との一方を形成する第1雌型および第1雄型と、
この第1雌型および第1雄型によって前記下側フランジ部が上側へ拡開する前記身部分と、前記上側フランジ部が下側へ拡開する前記蓋部分との一方が形成された前記厚紙を挟み込む第2紙押さえ機構と、
この第2紙押さえ機構で挟み込んだ前記厚紙に絞り加工を施し、前記下側フランジ部が上側へ拡開する前記身部分と、前記上側フランジ部が下側へ拡開する前記蓋部分との他方を形成する第2雌型および第2雄型とを備え
前記蓋部分で前記身部分を閉じた状態で前記下側フランジ部と前記上側フランジ部とが 周縁で隙間なく当接する、
ことを特徴とする紙製包装用容器成形装置。
A lower side wall portion that circulates and rises is connected to the periphery of the lower bottom portion, a lower flange portion that circulates is connected to an upper end of the lower side wall portion, and an upper side wall portion that circulates and falls An upper flange portion connected to the periphery of the upper bottom portion and circulated to face the lower flange portion is connected to the lower end of the upper side wall portion; a portion of the lower flange portion; and the upper flange the hinge portion and the thickness paper packaging container consisting of foldably connected to a portion of the part, in the body portion and the lid portion and the thickness paper packaging container molding apparatus for molding with drawing and
A first paper pressing mechanism for sandwiching thick paper;
One of the body portion in which the lower flange portion expands upward and the lid portion in which the upper flange portion expands downward is applied to the thick paper sandwiched by the first paper pressing mechanism. A first female mold and a first male mold forming:
The body portion and the cardboard where the upper flange portion is one of said lid portion diverging downwardly is formed in which the lower flange portion by the first female and first male is expanded upward A second paper pressing mechanism for sandwiching
The other of the body part in which the lower flange part is expanded upward and the lid part in which the upper flange part is expanded downward is applied to the thick paper sandwiched by the second paper pressing mechanism. and a second female and second male forming a
And the lower flange portion and the upper flange portion you contact without a gap at the periphery is closed the body portion in the lid portion,
The thickness Paper packaging container molding apparatus characterized by.
請求項に記載の紙製包装用容器成形装置において、
前記第1雌型と前記第2雌型とを一つの雌型で構成した、
ことを特徴とする紙製包装用容器成形装置。
In the thickness Paper packaging container forming device according to claim 3,
The first female mold and the second female mold are configured as one female mold.
The thickness Paper packaging container molding apparatus characterized by.
JP2000349245A 2000-11-16 2000-11-16 Cardboard packaging container, cardboard packaging container molding method and molding apparatus Expired - Lifetime JP3838863B2 (en)

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Application Number Priority Date Filing Date Title
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