JP4095154B2 - Belt-shaped article roll packaging tool, moisture-proof packaging film and packaging body - Google Patents

Description

上記表から期間が長くなるに連れ不具合が発生しており、更に温度と湿度が高いと不具合の発生が加速される傾向にあり、温度の上昇に脆いことが判る。
【０００７】
このような不具合を解決するため、耐熱性に優れた防湿フィルムの使用が考えられる。例えば２０μｍ厚のポリエチレンフィルムに２５μｍ厚程度のポリエチレンを介して７μｍ厚のアルミホイルをラミネ−トし、更にシ−ル材としてポリエチレンを２５μｍ厚程度施したものを用いる。すると、構成材料の総厚みが８０μｍ程となって厚くなり、しわが発生し易い。又、アルミホイルは折れに弱く、折れ曲がった部分にピンホ−ル状の穴等が開くため、防湿性能が低下して使用に適さない。
【０００８】
しかし、防湿包装での防湿性能は基本的に防湿フィルムに頼る部分が大きく、より高性能な防湿フィルムを使用することが不可欠である。又、軽量物や粉末等の比較的手軽に扱えるものの場合、防湿フィルムを密封する熱溶着等を容易に行えるが電極巻回体のような重量の大きな帯状物品巻回体の場合、設備による自動化によって包装時の人的負担を軽減すると共に、事故防止を重視しなければならない。
【０００９】
本発明はこのような従来の問題点に着目してなされたものであり、帯状物品巻回体の包装形態を自動化し易く、防湿性能を優れたものにすることが可能な帯状物品巻回体包装具を提供し、更に帯状物品巻回体防湿包装フィルムと帯状物品巻回体包装体を提供することを目的とする。
【００１０】
【課題を解決するための手段】
上記目的を達成するために、本発明の帯状物品巻回体包装具には中央に貫通孔を有するハブに帯状物品を巻回して形成した帯状物品巻回体の両端面を被って挾持する２枚の側板と、その帯状物品巻回体を挾持する両側板に掛け回して全体を結束するバンドとを備える。そして、上記各側板の中央に貫通孔をそれぞれ設け、その各側板の内側側面の中央貫通孔の縁部付近に、ハブの中央貫通孔に嵌まりかつ相対する４分の１円弧部分を形成する支持突部をそれぞれ設け、支持突部間には隙間が形成され、その各側板の外側側面に相対する側板との位置合わせ用凹部又は貫通孔を設け、更に各側板の外側側面と外周面に結束バンドを側板の表面より突出しないように収納できるバンド収納溝を形成する。
【００１１】
又、本発明の帯状物品巻回体防湿包装フィルムでは帯状物品巻回体の包装に用いる防湿フィルムを基材にプラスチックフィルムを使用し、その基材の包装使用時に内側に向く一面にアルミ箔をラミネ−トし、更にそのアルミ箔にプラスチックフィルムをラミネ−トした積層体にする。
【００１２】
又、本発明の帯状物品巻回体包装体では帯状物品巻回体の両端面を２枚の側板にて被って挾持し、その全体を防湿フィルムにて密封包装して単一巻回体包装体を形成し、その単一巻回体包装体を包装体中に含まれる帯状物品巻回体の両端面が上下方向になるように平置きして複数個の単一巻回体を積み重ね、その全体をプラスチックフィルムにて密封包装して複数巻回体包装体を形成し、その複数巻回体包装体に更に外装包装を施す。
【００１３】
【発明の実施の形態】
以下、添付の図１〜９を参照して、本発明の実施の形態を説明する。
図１は本発明を適用した電極巻回体包装具によるリチウムイオン二次電池用電極巻回体に対する包装過程を示す斜視図、図２はその電極巻回体包装具に備える側板の外側側面から見た側面図である。この電極巻回体包装具は２枚の側板と結束バンドとから構成する。そして、各側板１に図２に示すような硬質プラスチック等をブロー成形した強度の大きな方形板を使用する。何故なら、リチウムイオン二次電池用電極巻回体は重量が大きいばかりでなく、その電極原反は基板をアルミ箔や銅箔にし、そこに付着する塗膜も厚く、圧延工程を経ているため、非常に引っ張り強度が弱く、巻きテンションを強くすることができない。それ故、電極巻回体に横方向即ちその両端面に直角方向の力が加わると、段ずれ等が発生し易く、強度の大きい両側板１にて電極巻回体を挾持する必要があるからである。
【００１４】
又、各側板１を上下左右対称構造にし、両側板１の構造、大きさ等を同一にする。そこで、各側板１の中央に大径の貫通孔２をそれぞれ設け、その中央貫通孔２の上下の両側近傍に中央貫通孔２より等距離離して小径の貫通孔３をそれぞれ設ける。その際、各側板１を左右に２等分する垂直線上に沿って３個の貫通孔２、３が並ぶようにする。そして、各側板１の外側に向ける側面４に結束バンドを側板１の表面より突出しないように収納できる深さのバンド収納溝５を井桁状に配置してそれぞれ形成する。その際、２本のバンド収納溝５を水平な上下の外周面６と平行となるように、又２本のバンド収納溝５を垂直な左右の外周面６と平行となるようにそれぞれ配設する。しかも、これ等のバンド収納溝５の８箇所ある各端の延長部に当る部分が各側板１の外周面６を横切るように、各側板１の外周面６にもバンド収納溝７をそれぞれ形成する。又、各側板１の外周面６の４隅部８をそれぞれ面取りする。なお、小径の貫通孔３に替えて外側側面４に小径の凹所を設けてもよい。
【００１５】
又、各側板１の内側に向ける側面９にその中央貫通孔２の相対する上下の縁部付近から内側側面９に対し垂直方向に円弧状の支持突部１０をそれぞれ突設する（図３参照）。この各支持突部１０は中央貫通孔２の相対する上下内面から中心に向かって突出している円弧状の突部１１とそれぞれ一体化しており、大略中央貫通孔２に嵌まる同心円筒の相対する４分の１円弧部分にそれぞれ相当する。但し、各支持突部１０と一体に結合する突部１１とは内径を等しくするが、外径は異ならせて、支持突部１０の方を大きくする。
【００１６】
又、各側板１の内側側面９には両支持突起１０の直ぐ外側に、その中央貫通孔２と同心円状に幅が狭く、その幅とほぼ等しい深さのハブ嵌合溝１２をそれぞれ形成する。又、そのハブ嵌合溝１２より少し離れた外側に、更に中央貫通孔２と同心円状に幅が広くて側板１の外周面６の近くまで達し、深さが浅い凹所１３をそれぞれ形成する。そして、各凹所１３にそこに一面側が半分嵌まって他面側が半分突出する発泡ポリエチレン等のプラスチック製スペーサー１４をそれぞれ設置する。なお、この各発泡スペーサー１４は緩衝材であり、電極巻回体１５の巻回した電極１６の両端面１７にそれぞれ柔軟に接触して保護するためのものである。
【００１７】
包装時には、先ず両側板１を電極巻回体１５に装着する。その際、図３に示すように電極巻回体１５をその両端面１７が左右方向になるように立て、その電極巻回体１５の両側に各側板１を配置してその内側側面９を対応する端面１７に向けて立てる。しかし、この電極巻回体１５は上述したように厚み１００μｍ、幅約６０ｍｍの長尺電極シ−トを内径約７６ｍｍの中央貫通孔１８を有する外径約１２０ｍｍのハブ１９に外径が５００ｍｍ程になるまで巻回した３０ｋｇ程の重量物である。しかも、電極巻回体１５は塗膜の脆さから簡単に扱えない。そこで、中央部２０の幅を約８０ｍｍにしたハブ１９を用い、巻回した電極１６よりハブ中央部２０を両側にそれぞれ１０ｍｍずつ突出させる。
【００１８】
すると、図１に示すような平行に配置した２枚の板状支持アーム２１でハブ１９を下支えして電極巻回体１５を巻き取り装置（図示なし）より外し、その両側に各側板１をそれぞれ配置できる。その際、各側板１の左右外側から各中央貫通孔２に１本ずつ円柱状支持アーム２２の小径先端部２３をそれぞれ挿入し、その各中央貫通孔２の上下に位置する小径の貫通孔３に側板位置決めピン２４の先端部付近をそれぞれ挿入し、更に各外側側面４の上下端部付近の中央にある点線位置を側板供給具２５の先端に備えた吸盤で支持して、各側板１を電極巻回体１５の対応位置に向けてそれぞれ移動する。
【００１９】
すると、電極巻回体１５の両側から各側板１の両支持突部１０とその中に嵌まる支持アーム２２とをハブ１９の中央貫通孔１８にそれぞれ挿入できる。但し、各側板１の両突部１０を中央貫通孔１８内で嵌め合わせて円筒状にする必要がある。そこで、例えば右側の側板１を側板位置決めピン２４を用いて図１に示した位置より９０°回転させ、両側板１を位置合わせする。そして、各側板１の両支持突部１０と支持アーム２２をハブ１９の中央貫通孔１８内に嵌めた後、ハブ１９を下支えしている２枚の支持アーム２１を電極巻回体１５から開放する。更に、各側板１の両支持部１０をハブ１９の中央貫通孔１８内にそれぞれ挿入し、各側板１の両支持部１０の外側にある溝１２の内部に、ハブ１９の中央部２０をそれぞれ嵌合する。すると、各側板１に備えた発泡スペーサー１４が電極巻回体１５の両端面１７をそれぞれ被って接触する。なお、各側板１のハブ中央貫通孔１８に嵌まる両支持突部１０のみでは電極巻回体１５の支えが不安定であるため、各側板１の中央貫通孔２に嵌まる支持アーム２２によって更に電極巻回体１５を支える。
【００２０】
２枚の側板１で電極巻回体１５を挾持した後、支持アーム２２を挿入したまま、電極巻回体１５を挾持する両側板１にポリプロピレン製等のバンドを掛け回す。その際、支持アーム２２と側板位置決めピン２４を利用すると、両側板１等の全体を簡単に９０°回転できる。そこで、全体を適宜回転させながら、図４に示すようにバンド２６を各側板１の溝５、７に嵌め、掛け回して結束し井桁状に配置する。
【００２１】
このように、包装装置に電極巻回体支持等に用いる支持アーム２１、２２、側板位置決めピン２４、側板供給具２５等を備えておき、電極巻回体１５を２枚の側板１で挾持し、バンド２６を掛け回して結束する等の動作を自動的に行わせると、電極巻回体１５に包装具２７を簡単に装着できる。しかも、その包装状態が良好となり、巻回した電極１６の段ずれ等も発生し難く、更なる包装の自動化に適したものになる。
【００２２】
そこで、包装具装着済み電極巻回体１５の防湿性能を高度な状態に保持するため、包装用の防湿フィルムにアルミ箔を用いるが、破れ難くする手段としてアルミ箔の両面にプラスチックフィルムをラミネ−トする。しかし、アルミ箔の両面にプラスチックフィルムをラミネ−トし難いため、防湿フィルムの基材にプラスチックフィルムを使用し、その基材の包装使用時に内側に向く一面にアルミ箔をラミネ−トし、更にそのアルミ箔にプラスチックフィルムをラミネ−トして積層体を形成する。そして、防湿フィルムを袋にして用いるが、その袋内面に更にヒ−トシ−ル材となるポリエチレン樹脂等を付着すると防湿性を一層保持し易くなる。
【００２３】
このような防湿袋２８は図５に示すように相対する一端部２９を閉じ、他端部に開口３０を設け、内部に包装具装着済み電極巻回体１５を収納するため、その外形に合わせた収納空間を有する箱状に形成する。そして、包装時には包装具装着済み電極巻回体１５を立てたまま、上方より防湿袋２８を被せ、更に両端部に開口３１をそれぞれ設けた筒状の緩衝スペーサー３２で被う。その後、全体を転倒装置にて９０°回転させて平置きし、その防湿袋２８の開口端部３２を温度が２００℃あるヒーターブロックにて、１ｋｇｆ程度の圧力を加えて３秒間挟み込みヒ−トシ−ルする。
【００２４】
すると、図６に示すような包装具装着済み電極巻回体１５を防湿袋２８で密封包装し、その中央部を緩衝スペーサー３２で被った単一巻回体包装体３３が完成する。なお、防湿袋２８を形成する際に一端部２９を先に閉じる等の各接着もヒーターブロックにて行なう。このようなヒーターブロックの接着面は平面（フラット）より波状の曲面にする方がヒ−トシ−ル強度が大きくなり、接着むらも発生し難い。又、ヒ−トシ−ルの実施前に防湿袋２８の内部空気を脱気するとよく、防湿性に対する信頼性が高まると同時に、防湿袋２８に穴開き等の事故が発生している場合の発見が容易になる。なお、各側板１の外側側面４と外周面６にバンド収納溝５、７を設け、その深さを収納したバンド２６が側板１の表面より突出しないようにするのは、防湿袋２８の内面にバンド２６が接触して防湿袋２８が破れるのを防止するためである。又、各側板１の外周面６をアール形状にすると、その外周面６が防湿袋２８の内面と接触しても、防湿袋２８を破る危険性が少なくなり好適となる。
【００２５】
このような単一巻回体包装体３３はその包装体中に含まれる電極巻回体１５の両端面１７が上下方向になるように平置きして数段積み重ねポリエチレンフィルム等のプラスチック製袋にて包装する。その際、図７に示すように先ずリフト（図示せず）上に置いた足付きパレットトレー３４の内部に、一端部を閉じたプラスチック製袋３５を開口３６を上にして広げて置き、その中に単一巻回体包装体３３を順次入れて例えば４段積み重ねる。その後、プラスチック製袋３５を脱気し、その開口端部３７をヒーターブロックにて同様に閉じてヒ−トシ−ルする。すると、４個の単一巻回体包装体３３をプラスチック製袋３５にて密封包装した複数巻回体包装体３８が完成する。なお、単一巻回体包装体３３の形成時、防湿袋２８を被せた後に緩衝スペーサー３２を被せるのは、単一巻回体包装体３３の積み重ねの際に防湿袋２８の擦れ、荷ずれを良く防止するためであり、緩衝スペーサー３２の省略も可能である。
【００２６】
その後、図８に示すようにして複数巻回体包装体３８に対し、両端部に開口３９を設けた筒状の強化段ボール４０とキャップ状の強化段ボール４１を上からそれぞれ被せて外装包装する。そして、図９に示すようにその全体にバンド２６を掛け回して結束し一体に結合する。このようにして、電極巻回体包装体４２を完成すると、防湿フィルムから防湿袋２８を形成し、その防湿袋２８の開口端部３２を閉鎖するまでに行なう各接着を一般的な面状のヒ−トシ−ル方法にて実施できるため、耐熱性のある防湿フィルムの高度な防湿性能を期待できる。又、プラスチック製袋３５による防湿効果も合わせて期待できる。従って、通常の陸上輸送、航空機輸送、船舶輸送等の種々の環境条件下において、コンテナ輸送等による輸送保証が可能となり、長期的な保管においても十分な保証が可能になる。
【００２７】
【発明の効果】
以上説明した本発明によれば、請求項１記載の発明では２枚の側板を用いて帯状物品巻回体の両端面を被って挾持し、バンド掛けする際、各側板をその中央貫通孔を利用して自在に回転し支持すると共に、帯状物品巻回体をも支持することができる。又、各側板の外面に設けた凹部又は貫通孔を利用して相対する側板との位置合わせを行なえる。又、各側板の内側側面の中央貫通孔の縁部付近に設けた支持突部をハブの中央貫通孔に嵌めて帯状物品巻回体を支持することができる。それ故、帯状物品巻回体に包装具たる２枚の側板とバンドを簡単に装着でき、自動化し易い。
【００２８】
そして、包装状態が良好となって巻回した帯状物品の段ずれ等も発生し難くなる。又、各側板の外側側面と外周面に設けたバンド収納溝をバンドが側板の表面より突出しないように収納できる深さにしているため、バンドによってその後包装する防湿フィルム等に損傷を与える恐れもない。従って、包装形態が自動化に適し、防湿性能を優れたものにするすることができる。
【００２９】
又、請求項２記載の発明では防湿フィルムにアルミ箔の層を介在することにより、フィルムの柔軟性が増し、防湿性能を高度に保持できる。又、アルミ箔の両面にプラスチックフィルムをラミネ−トすることにより、フィルムを破れ難くすることができる。それ故、防湿フィルムが帯状物品巻回体の包装に適したものになる。
【００３０】
又、請求項３記載の発明では２枚の側板にて帯状物品巻回体の両端面を保護し、その全体を防湿フィルムにて密封包装するため、形成した単一巻回体包装体の包装状態が良好となって取り扱い易くなり、巻回した帯状物品の段ずれ等が発生し難く、防湿性能も優れたものになる。しかも、単一巻回体包装体を平置きして複数個積み重ね、プラスチックフィルムにて密封包装して複数巻回体包装体を形成すると、更に防湿性能が向上する。又、その複数巻回体包装体に外装包装を施すことによって、帯状物品巻回体包装体が種々の環境条件下の輸送や長期保管に適したものになる。
【図面の簡単な説明】
【図１】本発明を適用した電極巻回体包装具によるリチウムイオン二次電池用電極巻回体に対する包装過程を示す斜視図である。
【図２】同電極巻回体包装具を構成する１側板の外側に向く側面を示す側面図である。
【図３】同電極巻回体包装具を構成する２側板と電極巻回体との包装具装着時における対応関係を示す正面図である。
【図４】同包装具装着済み電極巻回体を示す斜視図である。
【図５】同包装具装着済み電極巻回体に対する防湿袋と緩衝スペーサーとの被覆過程を示す斜視図である。
【図６】同電極巻回体の単一巻回体包装体を示す斜視図である。
【図７】同単一巻回体包装体を複数個積み重ねて複数巻回体包装体を形成する過程を示す斜視図である。
【図８】同複数巻回体包装体に対する外装用強化段ボールの被覆過程を示す斜視図である。
【図９】完成した電極巻回体包装体を示す斜視図である。
【符号の説明】
１…側板 ２、１８…中央貫通孔 ３…小径貫通孔 ４…外側側面 ５、７…バンド収納溝 ６…外周面 ９…内側側面 １０…支持突部 １２…ハブ嵌合溝１３…スペーサー設置用凹所 １４…発泡スペーサー １５…電極巻回体 １６…巻回した電極 １７…端面 １９…ハブ ２０…ハブ中央部 ２１、２２…支持アーム ２４…側板位置決めピン ２５…側板供給具 ２６…バンド ２７…包装具 ２８…防湿袋 ３２…緩衝スペーサー ３３…単一巻回体包装体 ３４…パレットトレー ３５…プラスチック製袋 ３８…複数巻回体包装体 ４０、４１…外装用強化段ボール ４２…電極巻回体包装体[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a packaging tool for packaging a wound body of a strip-shaped article, such as an electrode raw fabric of a lithium ion secondary battery, which has a large weight and absorbs moisture, and a moisture-proof packaging film and a packaging body.
[0002]
[Prior art]
Conventionally, when transporting the electrodes of lithium ion secondary batteries between factories or internationally, the state before cutting into the width and length as a finished product, that is, in the state of a strip-like raw fabric or cut from the original fabric to the product width They are wrapped around a hub for packaging and transportation and storage. However, the characteristics of such an electrode winding body are significantly deteriorated by moisture. Moreover, the electrode winding body is heavy, and the weight of the packaged product exceeds 20 kg. Therefore, packaging that is generally performed on articles whose properties deteriorate due to moisture absorption, that is, sealed packaging that uses a moisture-proof film as the packaging material and encloses a moisture absorbent such as silica gel. It cannot be handled by vacuum packaging or nitrogen-filled packaging.
[0003]
Therefore, the applicant of the present invention integrated several electrode winding bodies, such as an electrode fabric of a lithium ion secondary battery, and inserted the cores into the central through-holes of each hub using the cores, and integrated the electrode winding bodies. Japanese Patent Application No. 9-302727 was previously presented regarding the moisture-proof packaging body to be packaged. In this moisture-proof packaging, a package is formed through the following steps. First, a 30 kg electrode wound body in which a long electrode sheet having a thickness of 100 μm and a width of about 60 mm is wound around a hub having an outer diameter of about 120 mm having a central through hole having an inner diameter of about 76 mm until the outer diameter becomes about 500 mm. Prepare. Next, a PVC pipe, which is the core of the package, is externally fitted to a cantilever shaft fixed to the carriage, and an electrode winding body in which a cushioning material is arranged in the center of the core is formed in the hub central through hole. Insert the core so that it fits, and collect several turns. At that time, a sheet-like foamed polyethylene spacer is disposed on both end faces of the electrode winding body as a buffer material.
[0004]
Next, the accumulated electrode winding body is covered with a cylindrical moisture-proof film, and both ends of the film are squeezed around the both ends of the center core projecting on both sides from the accumulated electrode winding body. At that time, wrinkles are likely to occur because the film is narrowed down, so an elastic sheet is wound around the core and bound from above. In addition, a film having a thickness of 60 μm or less is used for the moisture-proof film in order to suppress wrinkles generated when narrowing down. In addition, a means such as a rubber band or an insulation lock is used for binding. In addition, a moisture absorbent such as silica gel is put in the moisture-proof film so that moisture in the air in the film is absorbed. Finally, such a package is stored in a wooden box that supports both ends of the core, covered with a lid, a cardboard for display, etc. Apply.
[0005]
[Problems to be solved by the invention]
However, in this moisture-proof packaging, the core is used, and both ends of the moisture-proof film covering the accumulated electrode winding body are squeezed and bound around the both ends of the core that protrudes on both sides. Wrinkles are likely to occur and it is difficult to maintain airtightness. Therefore, the moisture-proof film must have a thin and soft structure in order to minimize wrinkles. For example, vapor deposition of aluminum or silicon oxide on a base material having a thickness of 10 to 20 μm such as nylon or polyethylene terephthalate. In addition, a layer obtained by further laminating a heat seal material such as polyethylene to the vapor deposition layer is used. However, such a thin moisture-proof film cannot cope with various physical distribution environments.
[0006]
Then, the result of the acceleration test which preserve | saved the said moisture-proof film in temperature and humidity 40 degreeC, 80%, 60 degreeC, and a 90% thermostat is shown in the following table. In the test, the appearance and the adhesion strength of the electrode coating film are evaluated.

From the above table, it can be seen that problems occur as the period becomes longer, and that the occurrence of problems tends to be accelerated when the temperature and humidity are higher, and that the rise in temperature is fragile.
[0007]
In order to solve such problems, it is conceivable to use a moisture-proof film having excellent heat resistance. For example, a 20 μm thick polyethylene film is used in which a 7 μm thick aluminum foil is laminated through a 25 μm thick polyethylene, and a polyethylene is applied as a seal material to a thickness of about 25 μm. As a result, the total thickness of the constituent materials becomes as thick as about 80 μm, and wrinkles are likely to occur. In addition, aluminum foil is weak to breakage, and pinhole-shaped holes and the like are opened in the bent portion, so that the moisture-proof performance is lowered and is not suitable for use.
[0008]
However, the moisture-proof performance in moisture-proof packaging is largely dependent on the moisture-proof film, and it is indispensable to use a higher-performance moisture-proof film. In addition, in the case of relatively easy handling such as lightweight materials and powders, heat welding to seal the moisture-proof film can be performed easily. In addition to reducing the human burden at the time of packaging, it is important to prevent accidents.
[0009]
The present invention has been made paying attention to such a conventional problem, and is easy to automate the packaging form of the belt-shaped article wound body, and is capable of making the moisture-proof performance excellent. An object of the present invention is to provide a packaging tool and to provide a strip-shaped article wound body moisture-proof packaging film and a strip-shaped article wound body package.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the belt-shaped article wound body packaging tool of the present invention covers and holds both end faces of a belt-shaped article wound body formed by winding a belt-shaped article around a hub having a through hole in the center. A side plate and a band that is wound around both side plates holding the belt-shaped article winding body and bound together. Then, respectively a through hole in the center of each side plate, formed near the edge of the central through hole of the inner side surfaces of the side plates, one arc portion of Hamama Li Kui opposite quarters in the central through hole of the hub provided support projections you each gap is formed between the supporting protrusions, the alignment recess or through hole of the opposite side plates on the outside side surfaces of the side plates is provided, further outer side surface and the outer periphery of the side plates A band storage groove that can store the binding band so as not to protrude from the surface of the side plate is formed on the surface.
[0011]
Further, in the strip-shaped article wound body moisture-proof packaging film of the present invention, a plastic film is used as a base material for the moisture-proof film used for packaging the strip-shaped article wound body, and an aluminum foil is provided on one side facing the inside when the base material is used for packaging. Laminate, and then a laminated body in which a plastic film is laminated on the aluminum foil.
[0012]
Moreover, in the strip-shaped article wound body package of the present invention, the both ends of the strip-shaped article wound body are covered and held by two side plates, and the whole is hermetically sealed with a moisture-proof film, and the single wound package is obtained. Forming a body, and stacking a single wound body by placing the single wound body in a flat manner so that both end faces of the strip-shaped article wound body included in the packaging are in the vertical direction, The whole is hermetically sealed with a plastic film to form a multi-wrap package, and the multi-wrap package is further packaged.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view showing a packaging process for an electrode winding body for a lithium ion secondary battery by an electrode winding body packaging tool to which the present invention is applied, and FIG. 2 is an external side view of a side plate provided in the electrode winding body packaging tool. FIG. This electrode winding body packaging tool is composed of two side plates and a binding band. Each side plate 1 is a square plate having a high strength obtained by blow-molding hard plastic or the like as shown in FIG. This is because the electrode roll for lithium ion secondary batteries is not only heavy, but the electrode stock is made of aluminum foil or copper foil, and the coating film attached to it is thick and undergoes a rolling process. The tensile strength is very weak and the winding tension cannot be increased. Therefore, when a force in the transverse direction, that is, a right angle direction is applied to both end faces of the electrode winding body, a step shift or the like is likely to occur, and it is necessary to hold the electrode winding body with the strong side plates 1. It is.
[0014]
In addition, the side plates 1 are vertically and horizontally symmetrical, and the side plates 1 have the same structure, size, and the like. Therefore, a large-diameter through hole 2 is provided at the center of each side plate 1, and small-diameter through holes 3 are provided in the vicinity of both upper and lower sides of the central through-hole 2 at an equal distance from the central through-hole 2. At this time, the three through holes 2 and 3 are arranged along a vertical line that divides each side plate 1 into two equal parts. And the band accommodation groove | channel 5 of the depth which can accommodate a binding band so that it may not protrude from the surface of the side plate 1 is arrange | positioned and formed in the side surface 4 which faces the outer side of each side plate 1, respectively. At that time, the two band storage grooves 5 are arranged so as to be parallel to the horizontal upper and lower outer peripheral surfaces 6, and the two band storage grooves 5 are arranged so as to be parallel to the vertical left and right outer peripheral surfaces 6. To do. Moreover, the band storing grooves 7 are also formed on the outer peripheral surfaces 6 of the side plates 1 so that the portions corresponding to the extension portions of the eight ends of the band storing grooves 5 cross the outer peripheral surfaces 6 of the side plates 1. To do. Further, the four corners 8 of the outer peripheral surface 6 of each side plate 1 are chamfered. A small-diameter recess may be provided in the outer side surface 4 instead of the small-diameter through hole 3.
[0015]
Also, arc-shaped support protrusions 10 project from the side surfaces 9 facing the inner sides of the side plates 1 in the direction perpendicular to the inner side surfaces 9 from the vicinity of the upper and lower edges of the central through hole 2 (see FIG. 3). ). The support protrusions 10 are respectively integrated with arc-shaped protrusions 11 protruding from the upper and lower inner surfaces of the central through hole 2 toward the center, and are opposed to concentric cylinders that are fitted into the central through hole 2. Each corresponds to a quarter arc portion. However, although the inner diameter is the same as that of the protrusion 11 integrally coupled to each support protrusion 10, the outer diameter is different and the support protrusion 10 is made larger.
[0016]
Further, on the inner side surface 9 of each side plate 1, a hub fitting groove 12 having a width that is concentrically narrow with the central through-hole 2 and a depth substantially equal to the width is formed immediately outside the both support protrusions 10. . Further, on the outer side slightly away from the hub fitting groove 12, a recess 13 having a width that is concentrically wide with the central through hole 2 and close to the outer peripheral surface 6 of the side plate 1 is formed. . Then, a plastic spacer 14 such as foamed polyethylene, in which one side is half-fitted and the other side is half projected, is installed in each recess 13. Each of the foam spacers 14 is a buffer material, and is intended to flexibly contact and protect both end faces 17 of the electrode 16 wound by the electrode winding body 15.
[0017]
At the time of packaging, first, the both side plates 1 are attached to the electrode winding body 15. At that time, as shown in FIG. 3, the electrode winding body 15 is erected so that both end faces 17 are in the left-right direction, and each side plate 1 is arranged on both sides of the electrode winding body 15 to correspond to the inner side surface 9. Standing toward the end face 17 However, as described above, the wound electrode body 15 is a long electrode sheet having a thickness of 100 μm and a width of about 60 mm, a hub 19 having an outer diameter of about 120 mm having a central through hole 18 having an inner diameter of about 76 mm, and an outer diameter of about 500 mm. It is a heavy product of about 30 kg that is wound until it becomes. Moreover, the electrode winding body 15 cannot be easily handled due to the brittleness of the coating film. Therefore, the hub 19 having a width of the central portion 20 of about 80 mm is used, and the hub central portion 20 is protruded by 10 mm on both sides from the wound electrode 16.
[0018]
As a result, the hub 19 is supported by two plate-like support arms 21 arranged in parallel as shown in FIG. 1 to remove the electrode winding body 15 from the winding device (not shown), and each side plate 1 is attached to both sides thereof. Each can be placed. At that time, one small diameter tip 23 of the columnar support arm 22 is inserted into each central through hole 2 from the left and right outer sides of each side plate 1, and the small diameter through hole 3 positioned above and below each central through hole 2. Each of the side plates 1 is supported by a suction cup provided at the tip of the side plate supply tool 25 at the center of the vicinity of the upper and lower ends of each outer side surface 4. Each moves toward the corresponding position of the wound electrode body 15.
[0019]
Then, both support protrusions 10 of each side plate 1 and the support arm 22 fitted therein can be inserted into the central through hole 18 of the hub 19 from both sides of the electrode winding body 15. However, it is necessary to fit both the protrusions 10 of each side plate 1 in the central through hole 18 to form a cylindrical shape. Therefore, for example, the right side plate 1 is rotated 90 ° from the position shown in FIG. 1 using the side plate positioning pins 24 to align the side plates 1. And after fitting both the support protrusions 10 and the support arms 22 of the side plates 1 in the central through hole 18 of the hub 19, the two support arms 21 supporting the hub 19 are released from the electrode winding body 15. To do. Further, both support portions 10 of each side plate 1 are respectively inserted into the central through holes 18 of the hubs 19, and the center portions 20 of the hubs 19 are respectively inserted into the grooves 12 outside the both support portions 10 of the side plates 1. Mating. Then, the foam spacer 14 provided in each side plate 1 covers both end surfaces 17 of the electrode winding body 15 and comes into contact therewith. In addition, since the support of the electrode winding body 15 is unstable only by the two support protrusions 10 that fit into the hub central through holes 18 of the side plates 1, the support arms 22 that fit into the central through holes 2 of the side plates 1 are used. Furthermore, the electrode winding body 15 is supported.
[0020]
After holding the electrode winding body 15 with the two side plates 1, a band made of polypropylene or the like is hung around the side plates 1 holding the electrode winding body 15 with the support arm 22 inserted. At that time, if the support arm 22 and the side plate positioning pins 24 are used, the entire side plates 1 and the like can be easily rotated by 90 °. Therefore, the band 26 is fitted into the grooves 5 and 7 of the side plates 1 while being rotated as appropriate as shown in FIG.
[0021]
In this manner, the packaging device includes the support arms 21 and 22 used for supporting the electrode winding body, the side plate positioning pins 24, the side plate supply tool 25, and the like, and the electrode winding body 15 is held between the two side plates 1. When the band 26 is hung and bundled automatically, the packaging tool 27 can be easily attached to the electrode winding body 15. In addition, the packaging state is good, the step of the wound electrode 16 hardly occurs, and it is suitable for further packaging automation.
[0022]
Therefore, in order to maintain the moisture-proof performance of the wound electrode assembly 15 with the packaging device mounted at a high level, aluminum foil is used for the moisture-proof film for packaging. However, a plastic film is laminated on both sides of the aluminum foil as a means to make it difficult to break. To do. However, since it is difficult to laminate the plastic film on both sides of the aluminum foil, the plastic film is used as the base material for the moisture-proof film, and the aluminum foil is laminated on the one side facing inward when the base material is used for packaging. A laminated body is formed by laminating a plastic film on the aluminum foil. A moisture-proof film is used as a bag, and if a polyethylene resin or the like that becomes a heat seal material is further attached to the inner surface of the bag, the moisture-proof property is more easily maintained.
[0023]
As shown in FIG. 5, the moisture-proof bag 28 closes one end 29 opposite to each other, has an opening 30 at the other end, and accommodates the wrapped electrode-attached wound body 15 therein. It is formed in a box shape having a storage space. Then, during packaging, the packaging body-attached electrode winding body 15 is kept standing, and the moisture-proof bag 28 is covered from above, and further covered with cylindrical buffer spacers 32 each provided with openings 31 at both ends. After that, the whole is rotated 90 ° with a tipping device and placed flat, and the opening end 32 of the moisture-proof bag 28 is sandwiched for 3 seconds by applying a pressure of about 1 kgf with a heater block having a temperature of 200 ° C. -Leave it.
[0024]
Then, the wound body-attached electrode winding body 15 as shown in FIG. 6 is hermetically packaged with the moisture-proof bag 28, and the single wound body packaging body 33 covered with the buffer spacer 32 is completed. In addition, when forming the moisture-proof bag 28, each adhesion such as closing the one end 29 first is also performed by the heater block. If the adhesive surface of such a heater block is a wavy curved surface rather than a flat surface, the heat seal strength is increased and adhesion unevenness is less likely to occur. In addition, it is recommended that the air inside the moisture-proof bag 28 be deaerated before the heat seal is performed, and the reliability of the moisture-proof bag is enhanced. At the same time, an accident such as a hole in the moisture-proof bag 28 has occurred. Becomes easier. It is to be noted that the band storage grooves 5 and 7 are provided on the outer side surface 4 and the outer peripheral surface 6 of each side plate 1 so that the band 26 storing the depth thereof does not protrude from the surface of the side plate 1. This is to prevent the moisture-proof bag 28 from being broken due to contact with the band 26. Moreover, if the outer peripheral surface 6 of each side plate 1 is rounded, even if the outer peripheral surface 6 contacts the inner surface of the moisture-proof bag 28, the risk of breaking the moisture-proof bag 28 is reduced, which is preferable.
[0025]
Such a single wound package 33 is placed in a flat state so that both end faces 17 of the electrode wound body 15 included in the package are in the vertical direction, and is stacked in several stages into a plastic bag such as a polyethylene film. And wrap it. At that time, as shown in FIG. 7, first, a plastic bag 35 with one end closed is placed in a pallet tray 34 with a foot placed on a lift (not shown) with the opening 36 facing upward, The single wound package 33 is sequentially put therein and stacked, for example, in four stages. Thereafter, the plastic bag 35 is evacuated, and the opening end 37 is similarly closed with a heater block and heat sealed. Then, a multi-wrap package 38 in which the four single roll packages 33 are sealed and packaged in the plastic bag 35 is completed. When the single roll package 33 is formed, the buffer spacer 32 is covered after the moisture bag 28 is covered, because the moisture bag 28 is rubbed and unloaded when the single roll package 33 is stacked. The buffer spacer 32 can be omitted.
[0026]
Thereafter, as shown in FIG. 8, the package body 38 is wrapped and covered with a cylindrical reinforcing cardboard 40 and cap-shaped reinforcing cardboard 41 each having openings 39 at both ends thereof. Then, as shown in FIG. 9, a band 26 is wound around the whole to bind and bind together. Thus, when the electrode winding body package 42 is completed, the moisture-proof bag 28 is formed from the moisture-proof film, and each bonding performed until the opening end 32 of the moisture-proof bag 28 is closed is a general planar shape. Since it can be carried out by a heat seal method, a high moisture-proof performance of a heat-resistant moisture-proof film can be expected. In addition, the moisture-proof effect of the plastic bag 35 can be expected. Accordingly, it is possible to guarantee transportation by container transportation or the like under various environmental conditions such as normal land transportation, aircraft transportation, ship transportation, etc., and it is possible to sufficiently guarantee even long-term storage.
[0027]
【The invention's effect】
According to the present invention described above, in the first aspect of the present invention, when the two side plates are used to cover and hold the both ends of the belt-shaped article wound body and banded, each side plate has its central through hole. It can be freely rotated and supported by using it, and can also support a belt-shaped article wound body. Moreover, alignment with the side plate which opposes can be performed using the recessed part or through-hole which were provided in the outer surface of each side plate. Further, the belt-shaped article wound body can be supported by fitting a support protrusion provided near the edge of the central through hole on the inner side surface of each side plate into the central through hole of the hub. Therefore, it is possible to easily attach the two side plates and the band, which are the packaging tools, to the belt-shaped article wound body, and to easily automate.
[0028]
And it becomes difficult to generate | occur | produce the shift | offset | difference etc. of the strip | belt-shaped article wound by the packaging state being favorable. In addition, since the band storing grooves provided on the outer side surface and outer peripheral surface of each side plate are deep enough to store the band so that it does not protrude from the surface of the side plate, there is a risk of damaging the moisture-proof film or the like that is subsequently wrapped by the band. Absent. Therefore, the packaging form is suitable for automation, and the moisture-proof performance can be made excellent.
[0029]
In the invention according to claim 2, by interposing the aluminum foil layer in the moisture-proof film, the flexibility of the film is increased and the moisture-proof performance can be maintained at a high level. Further, by laminating a plastic film on both sides of the aluminum foil, it is possible to make the film difficult to tear. Therefore, the moisture-proof film is suitable for packaging of the strip-shaped article roll.
[0030]
Further, in the invention according to claim 3, the two side plates protect the both end faces of the belt-shaped article wound body and hermetically seal the whole with a moisture-proof film. The condition becomes good and easy to handle, the stepped portion of the wound belt-like article hardly occurs, and the moisture-proof performance is excellent. In addition, when a single wound package is placed flat, a plurality of stacked packages are sealed and sealed with a plastic film to form a multiple wound package, the moisture proof performance is further improved. In addition, by applying exterior packaging to the plurality of wound package bodies, the strip-shaped article wound body package is suitable for transportation under various environmental conditions and long-term storage.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a packaging process for an electrode winding body for a lithium ion secondary battery by an electrode winding body packaging tool to which the present invention is applied.
FIG. 2 is a side view showing a side surface facing the outer side of one side plate constituting the electrode wound body packaging tool.
FIG. 3 is a front view showing a correspondence relationship between the two side plates constituting the electrode winding body packaging tool and the electrode winding body when the packaging tool is mounted.
FIG. 4 is a perspective view showing an electrode winding body on which the packaging tool is mounted.
FIG. 5 is a perspective view showing a covering process of a moisture-proof bag and a buffer spacer with respect to the wound electrode body mounted with the packaging tool.
FIG. 6 is a perspective view showing a single wound package of the electrode wound body.
FIG. 7 is a perspective view showing a process of forming a plurality of wound packages by stacking a plurality of the same wound packages.
FIG. 8 is a perspective view showing a covering process of the reinforced corrugated cardboard for the multi-wrap package.
FIG. 9 is a perspective view showing a completed electrode wound body package.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Side plate 2, 18 ... Central through-hole 3 ... Small diameter through-hole 4 ... Outer side surface 5, 7 ... Band storing groove 6 ... Outer peripheral surface 9 ... Inner side surface 10 ... Supporting protrusion 12 ... Hub fitting groove 13 ... For spacer installation Recess 14 ... Foam spacer 15 ... Electrode winding body 16 ... Wrapped electrode 17 ... End face 19 ... Hub 20 ... Hub central part 21, 22 ... Support arm 24 ... Side plate positioning pin 25 ... Side plate supply tool 26 ... Band 27 ... Packaging tool 28 ... Moisture-proof bag 32 ... Buffer spacer 33 ... Single roll packaging 34 ... Pallet tray 35 ... Plastic bag 38 ... Multiple roll packaging 40, 41 ... Reinforced corrugated cardboard 42 ... Electrode roll Package

Claims (1)

Two side plates covering and sandwiching both end faces of a band-shaped article roll formed by winding a band-shaped article around a hub having a through hole in the center;
In a band-shaped article wound body wrapping tool comprising a band that wraps around the both side plates sandwiching the band-shaped article wound body and binds the whole,
A through hole is provided in the center of each side plate,
The near edge of the central through hole of the inner side surfaces of the side plates is provided with support projections that form a 1 arc portion of Hamama Li Kui opposite quarters in the central through hole of the hub, respectively,
A gap is formed between the support protrusions,
Providing a recess or through hole for alignment with the side plate facing the outer side surface of each side plate;
Further, a band-shaped article roll packaging tool having a depth capable of storing the binding band so as not to protrude from the surface of the side plate is formed on the outer side surface and the outer peripheral surface of each side plate.

Images