JP4316947B2 - Perforation device for battery packaging - Google Patents

Perforation device for battery packaging Download PDF

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Publication number
JP4316947B2
JP4316947B2 JP2003200394A JP2003200394A JP4316947B2 JP 4316947 B2 JP4316947 B2 JP 4316947B2 JP 2003200394 A JP2003200394 A JP 2003200394A JP 2003200394 A JP2003200394 A JP 2003200394A JP 4316947 B2 JP4316947 B2 JP 4316947B2
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Prior art keywords
battery
battery package
batteries
perforation
roller
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JP2005041492A (en
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進 久保田
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FDK Twicell Co Ltd
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Toshiba Battery Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、ミシン目入り電池包装体および電池包装体へのミシン目入れ装置に関する。
【0002】
【従来の技術】
円筒形電池、例えばアルカリ乾電池は、各種の電子機器の電源として多用されている。この円筒形電池は、ポリエチレンテレフタレート(PET)フィルムのような熱収縮性フィルムで複数本、例えば4本を包装して電池包装体とし、さらに前記PETフィルムにバーコードラベルを貼着して出荷されている。
【0003】
しかしながら、このような電池包装体において前記熱収縮性フィルムは高い伸張性を有するために、ユーザが電池間に位置する前記フィルム部分をその電池の軸方向に沿って容易に破断できなかった。その結果、ユーザが前記電池包装体から目的とする本数、例えば1本の電池を簡単に取り出すことが困難であった。
【0004】
このようなことから、前記電池包装体の電池間に位置する表裏の熱収縮性フィルム部分にその電池の軸方向に沿ってミシン目を入れ、ユーザがそのフィルムのミシン目に沿って容易に破断できるようにして前記電池包装体から目的とする本数の電池を取り出せる構造にしている。
【0005】
ところで、従来のミシン目入り電池包装体は細長状で、長さ方向に沿い、内側に湾曲した2つの辺およびそれと直交し内側に湾曲した2つの辺とから構成された4つのコーナ部が鋭角な略長方形状のミシン目を電池間に位置する表裏の熱収縮性フィルム部分にその電池の軸方向に沿って複数開口させている。
【0006】
【発明が解決しようとする課題】
しかしながら、かかる形状のミシン目を有する電池包装体においてユーザが破断しようとする熱収縮性フィルムの両側の電池を互いに反対方向に回転させ、それら電池間の複数のミシン目に力を加えると、ミシン目の並び方向の端部に引裂き起点として働く2つの鋭角なコーナ部を有するため、破断応力が分散されて破断し難くなるばかりか、引裂き起点が特定できないことから破断線がギザギザになって外観性が低下する問題があった。
【0007】
本発明は、複数の電池を熱収縮性フィルムで包装した構造で、破断し易くかつ破断線を美麗にし得るミシン目を有するミシン目入り電池包装体を提供しようとするものである。
【0008】
本発明は、複数の電池包装体に対し、それらの電池間に位置する表裏の熱収縮性フィルム部分にその電池の軸方向に沿って破断し易くかつ破断線を美麗にし得るミシン目を連続的かつ円滑に入れることが可能な電池包装体へのミシン目入れ装置を提供しようとするものである。
【0009】
【課題を解決するための手段】
本発明の係る電池包装体へのミシン目入れ装置は、複数の電池を熱収縮性フィルムで包装した電池包装体をその電池の軸方向に平行して搬送するための搬送手段と、
前記搬送手段に配置され、搬送された電池包装体の電池間に位置する表裏の熱収縮性フィルム部分にその電池の軸方向に沿ってミシン目を入れるためのミシン目入れ機構と
を具備し、
前記ミシン目入れ機構は、前記電池包装体を挟むように、かつ中心軸が前記複数の電池の配列方向に配置され、前記電池包装体の移動力で自由回転する一対の押えローラと、これらの押えローラにそれぞれ取り付けられる円板状カッタと、前記電池包装体を挟んだ状態で一方の押えローラを他方の押えローラに向けて荷重を加えるための荷重付与手段とを備え、
前記押えローラは、柔軟性材料からなり、その軸方向に前記電池包装体の電池の個数に相当する数で分割され、
前記円板状カッタは、前記分割された押えローラ間にその押えローラと同軸的かつ回転可能に固定され、かつ片面両側または両面両側にテーパを付した三角形状の刃を有すること特徴とするものである。
【0011】
【発明の実施の形態】
以下、本発明の実施形態を図面を参照して詳細に説明する。
【0012】
(第1実施形態)
図1は、本発明の第1実施形態に係るミシン目入り電池包装体を示す斜視図、図2は図1の電池包装体の熱収縮フィルムに開口したミシン目を示す拡大平面図である。
【0013】
電池包装体1は、複数(例えば4本)の円筒形電池2を熱収縮性フィルム(例えばPETフィルム)3でシュリンク包装した構造を有する。複数のミシン目4は、前記電池包装体1にその4本の円筒形電池2間に位置する表裏のPETフィルム3部分にその電池2の軸方向に沿って開口されている。前記ミシン目4は、図2に示すように細長状で、長さ方向に沿う2つの辺が円弧状をなし、かつ長さ方向の両端部において前記2つの辺が点で交わる両端が鋭角な扁平楕円形状を有する。
【0014】
前記ミシン目が開口されたPETフィルムにおいて、図2に示すように前記ミシン目4の長さ(X)とミシン目間のピッチ長さ(Y)との合算長さは、3.5mm以下で、かつ前記ミシン目の長さ(X)は1〜2mmであることが好ましい。
【0015】
前記合算長さが3.5mmを超えると、熱収縮性フィルムを複数のミシン目に沿って破断する(引裂く)ことが困難になる。より好ましい前記合算長さは3mm以下である。
【0016】
前記ミシン目の長さを1mm未満にすると、熱収縮性フィルムを複数のミシン目に沿って破断する(引裂く)ことが困難になる。一方、前記ミシン目の長さが2mmを超えると、ピッチ長さが相対的に短くなってその部分での熱収縮性フィルムの強度が低下するため電池包装体の搬送、運搬等での衝撃、または誤って落下させたときの衝撃により、熱収縮性フィルムが前記複数のミシン目に沿って容易に破断されて収納された電池が飛び出す虞がある。
【0017】
なお、本発明に係るミシン目入り電池包装体においてミシン目の形状は図2に示すように扁平楕円状に限定されない。例えばミシン目4は、図3に示すように細長状で、長さ方向に沿う2つの辺のうち、一方の辺が円弧状をなすとともに、他方の辺が直線状をなし、かつ長さ方向の両端部において前記2つの辺が点で交わる両端が鋭角な半扁平楕円形状であってもよい。このようなミシン目が開口されたPETフィルムにおいて、図3に示すように前記ミシン目4の長さ(X)とミシン目間のピッチ長さ(Y)との合算長さ、前記ミシン目の長さ(X)は、前述したのと同様な理由からそれぞれ3.5mm以下、1〜2mmであることが好ましい。
【0018】
以上、第1実施形態のミシン目入り電池包装体は複数(例えば4本)の円筒形電池2を熱収縮性フィルム(例えばPETフィルム)3でシュリンク包装し、その4本の円筒形電池2間に位置する表裏のPETフィルム3部分に複数のミシン目4をその電池2の軸方向に沿って開口し、かつ前記ミシン目4が図2に示すように細長状で、長さ方向に沿う2つの辺が円弧状をなし、かつ長さ方向の両端部において前記2つの辺が点で交わる両端が鋭角な扁平楕円形状、または図3に示すように細長状で、長さ方向に沿う2つの辺のうちの一方の辺が円弧状をなすとともに他方の辺が直線状をなし、かつ長さ方向の両端部において前記2つの辺が点で交わる両端が鋭角な半扁平楕円形状を有する。
【0019】
このようなミシン目入り電池包装体において、ユーザが破断しようとする熱収縮性フィルム3の両側の電池2,2を互いに反対方向に回転させ、それら電池2,2間の複数のミシン目4に力を加えると、ミシン目4はその並び方向の両端部にそれぞれ1つの鋭角な交点を有するため、破断応力がこの交点に集中し、これを引裂き起点として熱収縮性フィルム3を容易に破断することができる。また、ミシン目4の引裂き起点は両端部それぞれの1つの鋭角な交点に特定されることから、破断線が美麗になり、破断後において良好な外観性を保持できる。
【0020】
特に、図2または図3に示すように前記ミシン目4の長さ(X)とミシン目間のピッチ長さ(Y)との合算長さを3.5mm以下、かつ前記ミシン目の長さ(X)を1〜2mmに規定すことによって、電池包装体の搬送、運搬等での衝撃により熱収縮性フィルム3が破断されることなく、ユーザによる破断操作でより容易に破断することが可能になる。
【0021】
(第2実施形態)
図4は、本発明の第2実施形態を示す電池包装体へのミシン目入れ装置の正面図、図5は図4のV−V線に沿う断面図、図6は図4のミシン目入れ装置に組み込まれる円板状カッタの刃形状を示す部分拡大正面図である。
【0022】
図4、図5中の21は、駆動ローラ22およびガイドローラ(図示せず)により例えば時計回り方向に回動される供給側ベルトコンベアである。受け側ベルトコンベア23は、前記供給側ベルトコンベア21に一定に間隔をあけて隣接し、かつその搬送方向と平行して配置され、駆動ローラ(図示せず)およびガイドローラ24により時計回り方向に回動される。図示しないモータの駆動軸により反時計回り方向に回転する押し込みローラ25は、前記供給側ベルトコンベア21の端部(右端部)の上方に配置されている。
【0023】
支持プレート26は、前記各ベルトコンベア21,23間の周囲にその面が水平なるように配置され、かつ後述する下部押えローラが位置する付近に矩形状穴27を開口している。4つのガイド部材28は、前記各ベルトコンベア21,23の移動方向に所望の間隔をあけてそれぞれ2列配置され、かつこれらの列間の距離が電池包装体の電池の配列方向長さと同じになるように前記支持プレート26上にねじにより固定されている。
【0024】
2本の円柱状ポスト29a、29bは、前記支持プレート26上に前記各ベルトコンベア21,23の長さ方向に沿って所望の間隔をあけて立設されている。これらの円柱状ポスト29a、29bは、前記各ベルトコンベア21,23に対して所望の間隔をあけて配置されている。上部支持板30は、前記各ポスト29a、29bの上端に固定されている。円筒状スライド31a,31bは、前記円柱状ポスト29a、29bに上下動可能にそれぞれ嵌合されている。上部環状ストッパ32a,32bは、前記円柱状ポスト29a、29bの上部付近にそれぞれ嵌着されている。これら上部環状ストッパ32a,32bは、径方向に2分割され、ねじで締め付けることにより前記円柱状ポスト29a、29bに嵌着されている。つまり、前記各上部環状ストッパ32a,32bは前記円柱状ポスト29a、29bに対する嵌着位置を可変できる構造になっている。荷重付与手段であるコイルスプリング33a,33bは、前記円筒状スライド31a,31b上端と前記上部環状ストッパ32a,32bの間に位置する前記円柱状ポスト29a、29bにそれぞれ嵌入され、前記円筒状スライド31a,31bを下方に向けて付勢している。なお、前記上部環状ストッパ32a,32bの前記円柱状ポスト29a、29bに対する嵌着位置を上下に可変することにより、前記コイルスプリング33a,33bを別のコイルスプリングに交換することなく、前記円筒状スライド31a,31bの下方への付勢力、つまり後述する上部押えロールの電池包装体への荷重力を調整することが可能になる。下部環状ストッパ34a,34bは、前記円柱状ポスト29a、29bの下部付近にそれぞれ嵌着されている。これらの下部環状ストッパ34a,34bは、前記円筒状スライド31a,31bの下方への過度の移動を規制して後述する上下部の押えロール間の距離を例えば電池包装体の厚さより僅かに短くなるように設定する働きを有する。なお、前記下部環状ストッパ34a,34bは前述した上部環状ストッパ32a,32bと同様な構造を有し、前記円柱状ポスト29a、29bに対する嵌着位置、つまり前記円筒状スライド31a,31bの規制位置を可変できる構造になっている。
【0025】
軸受ボックス35は、前記円筒状スライド31a,31bを囲むようにそれら円筒状スライド31a,31bに固定されている。上部側軸受36は、前記円筒状スライド31a,31b間に位置する前記軸受ボックス35内にそれらスライド31a,31bの並び方向に対して直交する、つまり前記各ベルトコンベア21,23の長さ方向に対して直交するように固定されている。このような上部側軸受36は、前記軸受ボックス35および前記円筒状スライド31a,31bとともに上下動可能に配置されている。
【0026】
下部側軸受37は、前記支持プレート26の下面に前記上部側軸受36の直下に位置し、かつその軸受36と同じ配置状態になるように固定されている。
【0027】
先端部がねじ切り加工された上部シャフト38は、前記上部側軸受36に自由回転可能に軸支され、さらに前記上部側軸受36の前記各ベルトコンベア21,23側の面(前面)から前記支持プレート26の上方位置に延出されている。この上部シャフト38の先端付近を除く延出部には、突状のカギ部39が軸方向に形成されている。先端部がねじ切り加工された下部シャフト40は、前記下部側軸受37に自由回転可能に軸支され、さらに前記下部側軸受37の前記各ベルトコンベア21,23側の面(前面)から前記支持プレート26の下方位置に延出されている。この下部シャフト40の先端付近を除く延出部には、突状のカギ部41が軸方向に形成されている。このような各シャフト38,40は、前記各ベルトコンベア21,23の回動方向に対して直交する方向に向けて前記支持プレート26の上方、下方の位置にそれぞれ互いに上下関係を以って平行して延出されている。
【0028】
電池包装体の電池の個数に相当する数、例えば4つに分割された上部円筒状スリーブ42は、前記上部シャフト38にそれらスリーブ42のカギ溝(図示せず)がそのシャフト38の突状のカギ部39に係合するように嵌め込まれている。柔軟性材料、例えばウレタンゴムからなる上部押えローラ43は、前記各上部円筒状スリーブ42の外周面にそれぞれ形成されている。なお、柔軟性材料は前記材料に限らず、シリコンゴム、天然ゴムなどを用いてもよい。
【0029】
3枚の上部円板状カッタ44は、前記4分割された前記上部円筒状スリーブ42間に位置する前記上部シャフト38にそれらの円板状カッタ44のカギ溝(図示せず)がシャフト38の突状のカギ部39に係合するように嵌め込まれている。ナット45は、前記上部シャフト38先端のねじ切り部に螺着され、これにより前記上部押えローラ43が外周面に形成された4つの上部円筒状スリーブ42およびこれらのスリーブ42の間に挟まれた前記3枚の上部円板状カッタ44は前記上部シャフト38に同軸的に固定されている。前記3枚の円板状カッタ44は、前記押えローラ43に比べて大きな直径を有し、それら押えローラ43の外周面から所望径のリング形状を以って突出されている。
【0030】
前記上部円板状カッタ44は、図6に示すように外周部に三角形状で両面両側にテーパを付した複数の刃46を有し、その刃46の先端の横断面は図7に示すように菱形をなしている。なお、これらの刃先角度θは30°〜45°の範囲にすることが好ましい。刃先角度を30°未満にすると、その刃46を電池包装体の熱収縮フィルムに差し込んでミシン目を形成する際、差込量の変動に対するミシン目の長さ(前述した図2のX)の変化が大ききなり、ミシン目が入れられた熱収縮フィルムの破断性がばらつく虞がある。一方、前記刃先角度が45°を超えると、その刃を電池包装体の熱収縮フィルムに差し込んでミシン目を形成する際、差込量の変動に対するミシン目の長さ(X)の変化を抑えることが可能になるものの、刃の強度が低下する虞がある。このような上部円板状カッタ44において、熱収縮フィルムに差し込んでミシン目を形成する際のミシン目の長さおよびミシン目間のピッチ長さの合計長さは図6に示す2つの刃先間の長さで決定される。
【0031】
前記下部シャフト40には、前述した上部シャフト38と同様に4つに分割された下部円筒状スリーブ47が嵌め込まれている。この下部円筒状スリーブ47の外周面には柔軟性材料、例えばウレタンゴムからなる下部押えローラ48がそれぞれ形成され、さらに前記4分割された前記下部円筒状スリーブ47間に位置するように3枚の下部円板状カッタ49が嵌め込まれている。ナット50は、前記下部シャフト40先端のねじ切り部に螺着され、これにより前記下部押えローラ48が外周面に形成された4つの下部円筒状スリーブ47およびこれらのスリーブ47の間に挟まれた前記3枚の下部円板状カッタ49は前記下部シャフト40に同軸的に固定されている。前記3枚の円板状カッタ49は、前記押えローラ48に比べて大きな直径を有し、それら押えローラ48の外周面から所望径のリング形状を以って突出されている。これらの下部円板状カッタ49は、前述した図6に示す上部円板状カッタ44と同様に外周部に三角形状で両面両側にテーパを付した複数の刃51を有し、その刃51の先端の横断面は菱形をなしている。なお、前記下部押えローラ48の上部はその上端が前記支持プレート26の表面と面一になるようにその支持プレート26の矩形穴27内に位置している。
【0032】
次に、前述した電池包装体のミシン目入れ装置の動作を図4〜図6を参照して説明する。なお、電池包装体1は複数(例えば4本)の円筒形電池2を熱収縮性フィルム(例えばPETフィルム)3でシュリンク包装した構造を有する。
【0033】
まず、複数の電池包装体1をその円筒形電池2の軸方向を水平にかつ搬送方向に対して平行になるよう供給側ベルトコンベア21上に横置きにして供給する。駆動ローラ22を時計回り方向に回転することによって、複数の電池包装体1は図4に示すようにその供給側ベルトコンベア21上に乗って矢印の方向(左から右の方向)に搬送される。
【0034】
押し込みローラ25を図示しないモータの駆動軸により反時計回り方向に回転することにより、前記供給側ベルトコンベア21の端部(右端部)に搬送された電池包装体1は前記供給側ベルトコンベア21と前記押し込みローラ25による挟持、回転により支持プレート26上に押し込まれ、4つのガイド部材28間で所定の姿勢を保った状態で案内されながら、移動される。このとき、図5に示すようにウレタンゴムからなる上部押えローラ43は前記支持プレート26の上方において上部シャフト38に4つの上部円筒状スリーブ42を介して同軸的に固定され、ウレタンゴムからなる下部押えローラ48は上端が前記支持プレート26の表面と面一になるようにその支持プレート26の矩形穴27内に位置し、下部シャフト40に4つの下部円筒状スリーブ47を介して同軸的に固定されているため、前記電池包装体1が前記上下の押えロール43,48間に搬送されると、その電池包装体1は4本の円筒形電池2の上下側面に対応するPETフィルム3箇所で前記上下の押えローラ43,48に当接される。このため、PETフィルム3とウレタンゴムからなる上下の押えローラ43、48との間で摩擦力が働いて、前記上下のシャフト38,40が上下側の軸受36、37に軸支されて自由回転し、その回転力により前記支持プレート26を通して受け側ベルトコンベア23に送られる。
【0035】
このように前記電池包装体1がその4本の円筒形電池2の上下側面に対応するPETフィルム3部分で前記上下の押えローラ43,48と当接し、移動する過程で、前記上部シャフト38には前記各上部円筒状スリーブ42および各上部押えロール43の間に挟まれて3枚の上部円板状カッタ44が同軸的に固定され、前記下部シャフト40には前記各下部円筒状スリーブ47および各上部押えロール48の間に挟まれて3枚の下部円板状カッタ49が同軸的に固定されているため、前記上下の円板状カッタ44、49が前記電池包装体1の円筒形電池2間に位置する表裏のPETフィルム3部分に差し込まれ、前記上下のシャフト38,40の自由回転により上下部の円板状カッタ44、49がその電池2の軸方向に沿って回転する。その結果、上下の円板状カッタ44、49によって、前述した図1に示すように前記支持プレート26およびガイド部材28に搬送された複数の電池包装体1にその4本の円筒形電池2間に位置する表裏のPETフィルム3部分にその電池2の軸方向に沿って連続的にかつ円滑に複数のミシン目4を入れることができる。この時、前記上下部の円板状カッタ44、49は図6に示すように外周部に三角形状で両面両側にテーパを付した複数の刃46,51を有し、それらの刃46,51の先端の横断面は図7に示すように菱形をなしているため、前述した図2に示すように両端が鋭角な扁平楕円形状のミシン目4を開口できる。
【0036】
また、円筒状スライド31a,31b上端と前記上部環状ストッパ32a,32bの間に位置する円柱状ポスト29a、29bに荷重付与手段であるコイルスプリング33a,33bを嵌入させることにより、前記円筒状スライド31a,31bは下方に向けて付勢され、これに伴ってこれらの円筒状スライド31a,31bに固定された軸受ボックス35内の上部側軸受36も同方向に付勢される。このため、前記上部側軸受36に軸支された上部シャフト38に同軸的に固定されたウレタンゴムからなる上部押えローラ43から前記支持プレート26およびガイド部材28に搬送された電池包装体1に向けて所定の荷重が加えられる。このような荷重の付与により上下の押えローラ43,48で電池包装体1を挟持する力が大きくなって、前述した上下のシャフト38,40の自由回転力を電池包装体1に確実に伝達できるため、前記電池包装体1を前記支持プレート26を通して受け側ベルトコンベア23に円滑に送ることが可能になる。
【0037】
さらに、前記荷重の付与により前記上下の押えローラ43,48間で電池包装体1を挟持する力を大きくでき、前述した上下のシャフト38,40の自由回転力により電池包装体1を前記支持プレート26上に移動させて上下の円板状カッタ44、49でPETフィルム3にミシン目を入れる際、前記電池包装体1が幅方向(円筒形電池2の配列方向)にずれるのを防止できる。その結果、前記上下の円板状カッタ44、49によって、電池包装体1にその4本の円筒形電池2間に位置する表裏のPETフィルム3部分にミシン目4をその電池2の軸方向に平行かつ直線的に入れることができる。
【0038】
さらに、前記荷重の付与により前述した上下の円板状カッタ44、49による電池包装体1の円筒形電池2間に位置する表裏のPETフィルム3部分への差し込み深さを一定にでき、そのPETフィルム3に長さおよびピッチが一定のミシン目4を安定的に入れることができる。
【0039】
なお、前記第2実施形態では上部押えローラを下部押えローラに向けて付勢する荷重付与手段としてコイルスプリングを用いたが、所望重量の錘でもよい。
【0040】
また、前記第2実施形態では供給側ベルトコンベア21の端部(右端部)に搬送された電池包装体1を押し込みローラ25の回転により上下の押えローラ43,48間に移動させたが、これに限定されない。例えば押し込みローラ25を設けずに、上下の押えローラ43,48のシャフト38、40のいずれか一方、例えば下部シャフト40をモータ等の駆動源で回転させてもよい。
【0041】
さらに、前記第2実施形態では上部押えローラを上下動可能にし、荷重付与手段(コイルスプリング)により上部押えローラを下部押えローラに向けて荷重を加える構造にしたが、これに限定されない。例えば、円筒状スライドなどのスライド部材、荷重付与手段(コイルスプリング)を設けずに、上下の押えローラを一定の間隔(例えば電池包装体の厚さより僅かに短い間隔)で固定して配置してもよい。ただし、このような構造の場合には前記押えローラに用いる柔軟性材料はより軟質の材料(例えばウレタン発泡体)を選択することが好ましい。
【0042】
さらに、前記第2実施形態では円板状カッタ44,49として図6、図7に示すように三角形状で両面両側にテーパが付され、先端の横断面菱形をなす形状の刃を有するものを用いたが、これに限定されない。例えば、三角形状で片面両側にテーパが付され、先端の横断面が図8に示すように台形をなした刃46(51)を有する円板状カッタを用いてもよい。このような円板状カッタを用いれば、前述した図3に示す電池包装体の熱収縮フィルムに両端が鋭角な半扁平楕円形状のミシン目を開口することが可能になる。
【0043】
さらに、前記第1、第2の実施形態では電池包装体として4本の円筒形電池を熱収縮性フィルム(例えばPETフィルム)でシュリンク包装した構造のものを用いたが、これに限定されない。例えば、2本、8本等の円筒形電池を熱収縮性フィルム(例えばPETフィルム)でシュリンク包装した電池包装体を用いてもよい。
【0044】
【発明の効果】
以上詳述したように本発明によれば、複数の電池を熱収縮性フィルムで包装した構造で、破断し易くかつ破断線を美麗にし得るミシン目を有するミシン目入り電池包装体を提供することができる。
【0045】
また、本発明によれば複数の電池包装体に対し、それらの電池間に位置する表裏の熱収縮性フィルム部分にその電池の軸方向に沿って破断し易くかつ破断線を美麗にし得るミシン目を連続的かつ円滑に入れることが可能で量産化に適した電池包装体へのミシン目入れ装置を提供することができる。
【図面の簡単な説明】
【図1】 本発明の第1実施形態を示すミシン目入り電池包装体を示す斜視図。
【図2】 図1の電池包装体の熱収縮フィルムに開口したミシン目を示す拡大平面図。
【図3】 電池包装体の熱収縮フィルムに開口したミシン目の他の形態を示す拡大平面図。
【図4】 本発明の第2実施形態を示す電池包装体へのミシン目入れ装置の正面図。
【図5】 図4のV−V線に沿う断面図。
【図6】 図4のミシン目入れ装置に組み込まれる円板状カッタの刃形状を示す部分拡大正面図。
【図7】 図6の刃先端の横断面図。
【図8】 他の形態の刃先端の横断面図
【符号の説明】
1…電池包装体、2…円筒形電池、3…熱収縮性フィルム(例えばPETフィルム)、4…ミシン目、21…供給側ベルトコンベア、23…受け側ベルトコンベア、25…押し込みローラ、26…支持プレート、29a,29b…円柱状ポスト、31a,31b…円筒状スライド、32a,32b…上部環状ストッパ、33a,33b…コイルスプリング、34a,34b…下部環状ストッパ、36…上部側軸受、37…下部側軸受、38…上部シャフト、40…下部シャフト、43,48…押えローラ、44,49…円板状カッタ、46,51…刃。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a perforated battery package and a perforation device for a battery package.
[0002]
[Prior art]
Cylindrical batteries, such as alkaline batteries, are frequently used as power sources for various electronic devices. This cylindrical battery is shipped with a plurality of, for example, four, heat-shrinkable films such as polyethylene terephthalate (PET) film to form a battery package, and a barcode label attached to the PET film. ing.
[0003]
However, since the heat-shrinkable film has high extensibility in such a battery package, the user cannot easily break the film portion located between the batteries along the axial direction of the battery. As a result, it was difficult for the user to easily take out the intended number, for example, one battery from the battery package.
[0004]
For this reason, the perforated heat shrinkable film portions located between the batteries of the battery packaging body are perforated along the axial direction of the battery, and the user can easily break along the perforated lines of the film. The structure is such that a desired number of batteries can be taken out from the battery package.
[0005]
By the way, the conventional perforated battery packaging body has an elongated shape, and has four corners composed of two sides curved inward and two sides curved inward and perpendicular to the inside along the length direction. A plurality of substantially rectangular perforations are opened in front and back heat shrinkable film portions located between the batteries along the axial direction of the battery.
[0006]
[Problems to be solved by the invention]
However, when the batteries on both sides of the heat-shrinkable film to be broken by the user in the battery package having such a perforation are rotated in opposite directions to each other and a force is applied to the plurality of perforations between the batteries, the sewing machine Since it has two sharp corners that act as tear starting points at the ends in the direction of the eyes, not only the breaking stress is dispersed and it is difficult to break, but the tearing line becomes jagged because the tear starting point cannot be specified. There was a problem that the performance decreased.
[0007]
The present invention is intended to provide a perforated battery package having a perforation that has a structure in which a plurality of batteries are packaged with a heat-shrinkable film, and that is easy to break and has a beautiful break line.
[0008]
The present invention provides a continuous perforation that can be easily broken along the axial direction of the battery on the front and back heat-shrinkable film portions located between the batteries for a plurality of battery packages. An object of the present invention is to provide a perforation device for a battery package that can be smoothly inserted.
[0009]
[Means for Solving the Problems]
  According to the present inventionA perforation device for a battery package includes a conveying means for conveying a battery package in which a plurality of batteries are packaged with a heat-shrinkable film in parallel with the axial direction of the battery,
  A perforation mechanism for perforating the heat-shrinkable film portions on the front and back located between the batteries of the transported battery package disposed in the transport means, along the axial direction of the battery;
Comprising
  The perforation mechanism includes a pair of press rollers that have a center axis arranged in the arrangement direction of the plurality of batteries so as to sandwich the battery package, and freely rotate by a moving force of the battery package, A disc-shaped cutter attached to each of the press rollers, and a load applying means for applying a load toward one press roller toward the other press roller while sandwiching the battery package,
  The presser roller is made of a flexible material and is divided in the axial direction by a number corresponding to the number of batteries of the battery package,
  The disc-shaped cutter has a triangular blade that is coaxially and rotatably fixed to the presser roller between the divided presser rollers and is tapered on one side or both sides.It is a characteristic.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0012]
(First embodiment)
FIG. 1 is a perspective view showing a perforated battery package according to the first embodiment of the present invention, and FIG. 2 is an enlarged plan view showing a perforation opened in the heat shrink film of the battery package of FIG.
[0013]
The battery package 1 has a structure in which a plurality of (for example, four) cylindrical batteries 2 are shrink-wrapped with a heat-shrinkable film (for example, a PET film) 3. The plurality of perforations 4 are opened along the axial direction of the battery 2 at the front and back PET film 3 portions located between the four cylindrical batteries 2 in the battery package 1. As shown in FIG. 2, the perforation 4 has an elongated shape, two sides along the length direction form an arc shape, and both ends where the two sides meet at points at both ends in the length direction are acute angles. It has a flat oval shape.
[0014]
In the PET film in which the perforations are opened, the total length of the length (X) of the perforations 4 and the pitch length (Y) between the perforations is 3.5 mm or less as shown in FIG. The perforation length (X) is preferably 1 to 2 mm.
[0015]
When the total length exceeds 3.5 mm, it becomes difficult to break (tear) the heat-shrinkable film along a plurality of perforations. More preferably, the total length is 3 mm or less.
[0016]
When the perforation length is less than 1 mm, it is difficult to break (tear) the heat-shrinkable film along a plurality of perforations. On the other hand, if the perforation length exceeds 2 mm, the pitch length is relatively short, and the strength of the heat-shrinkable film at that portion is reduced, so the impact during transportation, transportation, etc. of the battery package, Alternatively, a battery in which the heat-shrinkable film is easily broken and stored along the plurality of perforations may pop out due to an impact when it is accidentally dropped.
[0017]
In the perforated battery package according to the present invention, the shape of the perforation is not limited to a flat elliptical shape as shown in FIG. For example, the perforation 4 has an elongated shape as shown in FIG. 3, and one of the two sides along the length direction has an arc shape, the other side has a linear shape, and the length direction. A semi-flat ellipse shape having acute angles at both ends where the two sides intersect at a point may be employed. In such a perforated PET film, as shown in FIG. 3, the total length of the perforation 4 length (X) and the pitch length (Y) between the perforations, The length (X) is preferably 3.5 mm or less and 1 to 2 mm for the same reason as described above.
[0018]
As described above, the perforated battery package according to the first embodiment includes a plurality of (for example, four) cylindrical batteries 2 shrink-wrapped with a heat-shrinkable film (for example, PET film) 3, and the space between the four cylindrical batteries 2. A plurality of perforations 4 are opened along the axial direction of the battery 2 in the PET film 3 portions on the front and back sides of the battery 2 and the perforations 4 are elongated as shown in FIG. Two sides form a circular arc shape, and two ends along the length direction are formed in a flat elliptical shape having sharp edges at both ends where the two sides meet at both ends in the length direction, or an elongated shape as shown in FIG. One of the sides has an arcuate shape, the other side has a straight shape, and has a semi-flat ellipse shape with sharp edges at both ends where the two sides meet at both ends in the length direction.
[0019]
In such a perforated battery package, the batteries 2 and 2 on both sides of the heat-shrinkable film 3 to be broken by the user are rotated in opposite directions to form a plurality of perforations 4 between the batteries 2 and 2. When a force is applied, the perforation 4 has one acute intersection at each end in the arrangement direction, so that the breaking stress is concentrated at this intersection, and the heat-shrinkable film 3 is easily broken by using this as a starting point for tearing. be able to. In addition, since the tear starting point of the perforation 4 is specified as one acute intersection at each of both end portions, the break line becomes beautiful and good appearance can be maintained after the break.
[0020]
In particular, as shown in FIG. 2 or FIG. 3, the total length of the length (X) of the perforation 4 and the pitch length (Y) between the perforations is 3.5 mm or less, and the length of the perforation By prescribing (X) to 1 to 2 mm, the heat-shrinkable film 3 can be easily broken by a breaking operation by a user without being broken by an impact during transportation or transportation of the battery package. become.
[0021]
(Second Embodiment)
4 is a front view of a perforation device for a battery package showing a second embodiment of the present invention, FIG. 5 is a cross-sectional view taken along line VV of FIG. 4, and FIG. 6 is a perforation of FIG. It is a partial enlarged front view which shows the blade shape of the disk shaped cutter integrated in an apparatus.
[0022]
4 and 5, reference numeral 21 denotes a supply-side belt conveyor that is rotated, for example, in a clockwise direction by a drive roller 22 and a guide roller (not shown). The receiving side belt conveyor 23 is arranged adjacent to the supply side belt conveyor 21 at a constant interval and parallel to the conveying direction thereof, and is rotated clockwise by a driving roller (not shown) and a guide roller 24. It is rotated. A pushing roller 25 that rotates counterclockwise by a motor drive shaft (not shown) is disposed above the end portion (right end portion) of the supply side belt conveyor 21.
[0023]
The support plate 26 is disposed around the belt conveyors 21 and 23 so that the surface thereof is horizontal, and has a rectangular hole 27 in the vicinity where a lower presser roller described later is located. The four guide members 28 are arranged in two rows at a desired interval in the moving direction of the belt conveyors 21 and 23, respectively, and the distance between these rows is the same as the length of the battery pack in the arrangement direction of the batteries. It is fixed on the support plate 26 with screws.
[0024]
The two columnar posts 29a and 29b are erected on the support plate 26 at a desired interval along the length direction of the belt conveyors 21 and 23. These cylindrical posts 29a and 29b are arranged at a desired interval with respect to the respective belt conveyors 21 and 23. The upper support plate 30 is fixed to the upper ends of the posts 29a and 29b. The cylindrical slides 31a and 31b are fitted to the columnar posts 29a and 29b so as to be movable up and down. The upper annular stoppers 32a and 32b are fitted near the upper portions of the columnar posts 29a and 29b, respectively. These upper annular stoppers 32a and 32b are divided into two in the radial direction and are fitted to the columnar posts 29a and 29b by tightening with screws. In other words, the upper annular stoppers 32a and 32b are structured such that the fitting positions with respect to the columnar posts 29a and 29b can be varied. Coil springs 33a and 33b serving as load applying means are respectively fitted into the columnar posts 29a and 29b located between the upper ends of the cylindrical slides 31a and 31b and the upper annular stoppers 32a and 32b, and the cylindrical slide 31a. , 31b is urged downward. In addition, by changing the fitting position of the upper annular stoppers 32a and 32b with respect to the columnar posts 29a and 29b up and down, the cylindrical slide can be replaced without replacing the coil springs 33a and 33b with another coil spring. It becomes possible to adjust the downward urging force of 31a, 31b, that is, the load force of the upper presser roll, which will be described later, to the battery package. The lower annular stoppers 34a and 34b are fitted near the lower portions of the columnar posts 29a and 29b, respectively. These lower annular stoppers 34a and 34b restrict excessive movement of the cylindrical slides 31a and 31b downward, so that the distance between the upper and lower presser rolls described later is slightly shorter than the thickness of the battery package, for example. It has the function to set as follows. The lower annular stoppers 34a and 34b have the same structure as the upper annular stoppers 32a and 32b described above, and the fitting positions with respect to the columnar posts 29a and 29b, that is, the restriction positions of the cylindrical slides 31a and 31b. It has a variable structure.
[0025]
The bearing box 35 is fixed to the cylindrical slides 31a and 31b so as to surround the cylindrical slides 31a and 31b. The upper bearing 36 is orthogonal to the direction in which the slides 31a and 31b are arranged in the bearing box 35 located between the cylindrical slides 31a and 31b, that is, in the length direction of the belt conveyors 21 and 23. They are fixed so as to be orthogonal to each other. Such an upper bearing 36 is arranged so as to move up and down together with the bearing box 35 and the cylindrical slides 31a and 31b.
[0026]
The lower bearing 37 is fixed to the lower surface of the support plate 26 so as to be positioned immediately below the upper bearing 36 and to be in the same arrangement state as the bearing 36.
[0027]
The upper shaft 38 whose tip is threaded is pivotally supported by the upper bearing 36 so as to be freely rotatable, and further, the support plate from the surfaces (front surfaces) of the upper conveyor 36 on the belt conveyors 21 and 23 side. 26 is extended to an upper position. A protruding key part 39 is formed in the axial direction at the extending part excluding the vicinity of the tip of the upper shaft 38. The lower shaft 40 whose tip is threaded is pivotally supported by the lower bearing 37 so as to be freely rotatable, and further from the surface (front surface) of the lower conveyor 37 on the belt conveyors 21 and 23 side, the support plate. 26 is extended to a lower position. A protruding key portion 41 is formed in the axial direction at the extending portion excluding the vicinity of the tip of the lower shaft 40. Each of the shafts 38 and 40 is parallel to each other at a position above and below the support plate 26 in a direction perpendicular to the direction of rotation of the belt conveyors 21 and 23. It has been extended.
[0028]
In the upper cylindrical sleeve 42 divided into a number corresponding to the number of batteries of the battery package, for example, four, the key groove (not shown) of the sleeve 42 is formed on the upper shaft 38 so as to protrude from the shaft 38. It is fitted so as to engage with the key part 39. Upper presser rollers 43 made of a flexible material such as urethane rubber are formed on the outer peripheral surface of each upper cylindrical sleeve 42. The flexible material is not limited to the above material, and silicon rubber, natural rubber, or the like may be used.
[0029]
Three upper disk-shaped cutters 44 are arranged on the upper shaft 38 positioned between the four divided upper cylindrical sleeves 42 so that the key grooves (not shown) of these disk-shaped cutters 44 are formed on the shaft 38. It is fitted so as to engage with the protruding key part 39. The nut 45 is screwed into a threaded portion at the tip of the upper shaft 38, whereby the upper presser roller 43 is formed on the outer peripheral surface of the four upper cylindrical sleeves 42 and the sleeve 42 is sandwiched between the sleeves 42. Three upper disk-shaped cutters 44 are coaxially fixed to the upper shaft 38. The three disc-shaped cutters 44 have a larger diameter than the pressing roller 43 and protrude from the outer peripheral surface of the pressing roller 43 with a ring shape having a desired diameter.
[0030]
As shown in FIG. 6, the upper disk-shaped cutter 44 has a plurality of blades 46 which are triangular in the outer peripheral portion and tapered on both sides, and the cross section at the tip of the blade 46 is as shown in FIG. It has a diamond shape. In addition, it is preferable to make these blade edge angles (theta) into the range of 30 degrees-45 degrees. When the blade edge angle is less than 30 °, when the blade 46 is inserted into the heat shrink film of the battery package to form a perforation, the perforation length (X in FIG. 2 described above) with respect to the variation in the amount of insertion There is a possibility that the change becomes large and the breakability of the heat-shrinkable film with perforations varies. On the other hand, when the blade edge angle exceeds 45 °, when the blade is inserted into the heat shrink film of the battery packaging body to form a perforation, a change in the length (X) of the perforation with respect to the variation of the insertion amount is suppressed. However, the strength of the blade may be reduced. In such an upper disc-shaped cutter 44, the total length of the perforation length and the pitch length between the perforations when forming the perforation by inserting into the heat shrink film is the distance between the two cutting edges shown in FIG. Is determined by the length of
[0031]
The lower shaft 40 is fitted with a lower cylindrical sleeve 47 divided into four parts in the same manner as the upper shaft 38 described above. A lower presser roller 48 made of a flexible material, for example, urethane rubber, is formed on the outer peripheral surface of the lower cylindrical sleeve 47, and three sheets are positioned so as to be positioned between the lower cylindrical sleeves 47 divided into four. A lower disk-shaped cutter 49 is fitted. The nut 50 is screwed into a threaded portion at the tip of the lower shaft 40, whereby the lower presser roller 48 is formed on the outer peripheral surface of the four lower cylindrical sleeves 47 and the sleeve 47 is sandwiched between the sleeves 47. Three lower disk-shaped cutters 49 are coaxially fixed to the lower shaft 40. The three disc-shaped cutters 49 have a diameter larger than that of the pressing roller 48 and protrude from the outer peripheral surface of the pressing roller 48 with a ring shape having a desired diameter. These lower disk-shaped cutters 49 have a plurality of blades 51 that are triangular in the outer peripheral portion and tapered on both sides like the upper disk-shaped cutter 44 shown in FIG. The cross section of the tip has a diamond shape. The upper part of the lower pressing roller 48 is positioned in the rectangular hole 27 of the support plate 26 so that the upper end thereof is flush with the surface of the support plate 26.
[0032]
Next, the operation of the above-described perforation device for a battery package will be described with reference to FIGS. The battery package 1 has a structure in which a plurality of (for example, four) cylindrical batteries 2 are shrink-wrapped with a heat-shrinkable film (for example, a PET film) 3.
[0033]
First, a plurality of battery packages 1 are supplied horizontally on the supply side belt conveyor 21 so that the axial direction of the cylindrical battery 2 is horizontal and parallel to the transport direction. By rotating the driving roller 22 in the clockwise direction, the plurality of battery packs 1 are transported on the supply side belt conveyor 21 in the direction of the arrow (from left to right) as shown in FIG. .
[0034]
The battery pack 1 conveyed to the end (right end) of the supply side belt conveyor 21 is rotated with the supply side belt conveyor 21 by rotating the push roller 25 counterclockwise by a drive shaft of a motor (not shown). It is pushed onto the support plate 26 by being pinched and rotated by the push-in roller 25 and moved while being guided in a state where a predetermined posture is maintained between the four guide members 28. At this time, as shown in FIG. 5, the upper pressing roller 43 made of urethane rubber is coaxially fixed to the upper shaft 38 via the four upper cylindrical sleeves 42 above the support plate 26, and the lower pressing roller 43 made of urethane rubber. The presser roller 48 is positioned in the rectangular hole 27 of the support plate 26 so that its upper end is flush with the surface of the support plate 26, and is coaxially fixed to the lower shaft 40 via four lower cylindrical sleeves 47. Therefore, when the battery packaging body 1 is conveyed between the upper and lower pressing rolls 43 and 48, the battery packaging body 1 has three PET films corresponding to the upper and lower side surfaces of the four cylindrical batteries 2. The upper and lower presser rollers 43 and 48 are in contact with each other. Therefore, a frictional force acts between the PET film 3 and the upper and lower pressing rollers 43 and 48 made of urethane rubber, and the upper and lower shafts 38 and 40 are pivotally supported by the upper and lower bearings 36 and 37 to freely rotate. Then, it is sent to the receiving side belt conveyor 23 through the support plate 26 by the rotational force.
[0035]
In this way, the battery package 1 abuts the upper and lower pressing rollers 43 and 48 at the PET film 3 portion corresponding to the upper and lower side surfaces of the four cylindrical batteries 2 and moves to the upper shaft 38 in the process of moving. Is sandwiched between the upper cylindrical sleeves 42 and the upper presser rolls 43, and three upper disk-shaped cutters 44 are coaxially fixed. The lower shaft 40 has the lower cylindrical sleeves 47 and Since the three lower disc-shaped cutters 49 are coaxially fixed between the upper presser rolls 48, the upper and lower disc-shaped cutters 44, 49 are the cylindrical batteries of the battery package 1. The upper and lower shaft-shaped cutters 44 and 49 are inserted into the front and back PET film 3 portions positioned between the two, and the upper and lower disk-shaped cutters 44 and 49 are rotated along the axial direction of the battery 2. As a result, the upper and lower disk-shaped cutters 44 and 49 divide the four cylindrical batteries 2 between the plurality of battery packages 1 conveyed to the support plate 26 and the guide member 28 as shown in FIG. A plurality of perforations 4 can be continuously and smoothly put along the axial direction of the battery 2 in the PET film 3 portions on the front and back sides located at the front and rear sides. At this time, the upper and lower disk-shaped cutters 44 and 49 have a plurality of blades 46 and 51 which are triangular in the outer peripheral portion and tapered on both sides as shown in FIG. 7 has a rhombus shape as shown in FIG. 7, and thus the flat elliptical perforation 4 having sharp edges at both ends can be opened as shown in FIG.
[0036]
Further, by inserting coil springs 33a and 33b serving as load applying means into columnar posts 29a and 29b positioned between upper ends of the cylindrical slides 31a and 31b and the upper annular stoppers 32a and 32b, the cylindrical slide 31a is inserted. , 31b is urged downward, and accordingly, the upper bearing 36 in the bearing box 35 fixed to the cylindrical slides 31a, 31b is also urged in the same direction. For this reason, from the upper pressing roller 43 made of urethane rubber coaxially fixed to the upper shaft 38 pivotally supported by the upper bearing 36 to the battery package 1 conveyed to the support plate 26 and the guide member 28. A predetermined load is applied. By applying such a load, the force for clamping the battery packaging body 1 by the upper and lower pressing rollers 43 and 48 is increased, and the above-described free rotational force of the upper and lower shafts 38 and 40 can be reliably transmitted to the battery packaging body 1. Therefore, the battery package 1 can be smoothly sent to the receiving side belt conveyor 23 through the support plate 26.
[0037]
Further, by applying the load, the force for sandwiching the battery package 1 between the upper and lower pressing rollers 43 and 48 can be increased, and the battery package 1 is mounted on the support plate by the free rotational force of the upper and lower shafts 38 and 40 described above. 26, when the PET film 3 is perforated by the upper and lower disk-shaped cutters 44 and 49, the battery package 1 can be prevented from shifting in the width direction (the direction in which the cylindrical batteries 2 are arranged). As a result, the upper and lower disk-shaped cutters 44 and 49 make the perforation 4 in the axial direction of the battery 2 in the PET film 3 portion of the front and back located between the four cylindrical batteries 2 on the battery package 1. Parallel and straight lines can be inserted.
[0038]
Furthermore, by applying the load, the depth of insertion of the battery package 1 into the PET film 3 portion on the front and back located between the cylindrical batteries 2 by the upper and lower disk-shaped cutters 44 and 49 can be made constant. A perforation 4 having a constant length and pitch can be stably placed in the film 3.
[0039]
In the second embodiment, the coil spring is used as the load applying means for urging the upper pressing roller toward the lower pressing roller. However, a weight having a desired weight may be used.
[0040]
In the second embodiment, the battery package 1 conveyed to the end (right end) of the supply side belt conveyor 21 is moved between the upper and lower press rollers 43 and 48 by the rotation of the push roller 25. It is not limited to. For example, without providing the pushing roller 25, any one of the shafts 38 and 40 of the upper and lower pressing rollers 43 and 48, for example, the lower shaft 40 may be rotated by a driving source such as a motor.
[0041]
Furthermore, in the second embodiment, the upper presser roller can be moved up and down, and the load is applied by the load applying means (coil spring) toward the lower presser roller. However, the present invention is not limited to this. For example, without providing a slide member such as a cylindrical slide or a load applying means (coil spring), the upper and lower press rollers are fixed and arranged at a constant interval (for example, an interval slightly shorter than the thickness of the battery package). Also good. However, in the case of such a structure, it is preferable to select a softer material (for example, urethane foam) as the flexible material used for the pressing roller.
[0042]
Furthermore, in the second embodiment, as the disk-shaped cutters 44 and 49, as shown in FIGS. 6 and 7, a triangular shape having both sides tapered and a blade having a shape of a rhombus at the tip is formed. Although used, it is not limited to this. For example, a disc-shaped cutter having a triangular shape and a taper on both sides of one side and a blade 46 (51) having a trapezoidal cross section as shown in FIG. 8 may be used. If such a disk-shaped cutter is used, it becomes possible to open the perforation of a semi-flat ellipse shape with acute angles at both ends in the heat shrink film of the battery package shown in FIG.
[0043]
Further, in the first and second embodiments, the battery packaging body has a structure in which four cylindrical batteries are shrink-wrapped with a heat-shrinkable film (for example, PET film), but is not limited thereto. For example, a battery package in which two, eight, etc. cylindrical batteries are shrink-wrapped with a heat-shrinkable film (for example, PET film) may be used.
[0044]
【The invention's effect】
As described above in detail, according to the present invention, there is provided a perforated battery packaging body having a structure in which a plurality of batteries are packaged with a heat-shrinkable film, and has a perforation that is easy to break and has a beautiful break line. Can do.
[0045]
In addition, according to the present invention, perforations that can be easily broken along the axial direction of the battery on the front and back heat-shrinkable film portions located between the batteries for a plurality of battery packaging bodies and can make the break line beautiful. Can be provided continuously and smoothly, and a perforation device for a battery package suitable for mass production can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a perforated battery package showing a first embodiment of the present invention.
2 is an enlarged plan view showing a perforation opened in the heat-shrinkable film of the battery package of FIG. 1. FIG.
FIG. 3 is an enlarged plan view showing another form of perforations opened in the heat-shrinkable film of the battery package.
FIG. 4 is a front view of a perforation device for a battery package showing a second embodiment of the present invention.
5 is a cross-sectional view taken along line VV in FIG.
6 is a partially enlarged front view showing the blade shape of a disk-shaped cutter incorporated in the perforation device of FIG. 4;
7 is a cross-sectional view of the blade tip of FIG.
FIG. 8 is a cross-sectional view of another form of blade tip
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Battery packaging body, 2 ... Cylindrical battery, 3 ... Heat-shrinkable film (for example, PET film), 4 ... Perforation, 21 ... Supply side belt conveyor, 23 ... Reception side belt conveyor, 25 ... Push roller, 26 ... Support plate, 29a, 29b ... cylindrical post, 31a, 31b ... cylindrical slide, 32a, 32b ... upper annular stopper, 33a, 33b ... coil spring, 34a, 34b ... lower annular stopper, 36 ... upper bearing, 37 ... Lower side bearing, 38 ... upper shaft, 40 ... lower shaft, 43, 48 ... presser roller, 44, 49 ... disc-shaped cutter, 46, 51 ... blade.

Claims (2)

複数の電池を熱収縮性フィルムで包装した電池包装体をその電池の軸方向に平行して搬送するための搬送手段と、A transport means for transporting a battery package in which a plurality of batteries are wrapped with a heat-shrinkable film in parallel to the axial direction of the battery;
前記搬送手段に配置され、搬送された電池包装体の電池間に位置する表裏の熱収縮性フィルム部分にその電池の軸方向に沿ってミシン目を入れるためのミシン目入れ機構とA perforation mechanism for perforating the heat-shrinkable film portions on the front and back located between the batteries of the transported battery package disposed in the transport means, along the axial direction of the battery;
を具備し、Comprising
前記ミシン目入れ機構は、前記電池包装体を挟むように、かつ中心軸が前記複数の電池の配列方向に配置され、前記電池包装体の移動力で自由回転する一対の押えローラと、これらの押えローラにそれぞれ取り付けられる円板状カッタと、前記電池包装体を挟んだ状態で一方の押えローラを他方の押えローラに向けて荷重を加えるための荷重付与手段とを備え、The perforation mechanism includes a pair of press rollers that have a center axis arranged in the arrangement direction of the plurality of batteries so as to sandwich the battery package, and freely rotate by the moving force of the battery package, A disc-shaped cutter attached to each of the press rollers, and a load applying means for applying a load toward one press roller toward the other press roller while sandwiching the battery package,
前記押えローラは、柔軟性材料からなり、その軸方向に前記電池包装体の電池の個数に相当する数で分割され、The presser roller is made of a flexible material, and is divided in the axial direction by a number corresponding to the number of batteries of the battery package,
前記円板状カッタは、前記分割された押えローラ間にその押えローラと同軸的かつ回転可能に固定され、かつ片面両側または両面両側にテーパを付した三角形状の刃を有することを特徴とする電池包装体へのミシン目入れ装置。The disk-shaped cutter has a triangular blade that is coaxially and rotatably fixed to the presser roller between the divided presser rollers and has a taper on both sides or both sides. Perforation device for battery packaging.
前記荷重付与手段は、前記一方の押えローラを前記他方のローラに向けて付勢するためのスプリング部材であることを特徴とする請求項1記載の電池包装体へのミシン目入れ装置。The perforation device for a battery package according to claim 1, wherein the load applying means is a spring member for urging the one pressing roller toward the other roller.
JP2003200394A 2003-07-23 2003-07-23 Perforation device for battery packaging Expired - Fee Related JP4316947B2 (en)

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JP7309069B2 (en) 2020-06-09 2023-07-14 三菱電機株式会社 Learning device and reasoning device for control of air conditioner

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JP6633436B2 (en) * 2016-03-22 2020-01-22 テルモ株式会社 Pillow type packaging bag

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Publication number Priority date Publication date Assignee Title
JP7309069B2 (en) 2020-06-09 2023-07-14 三菱電機株式会社 Learning device and reasoning device for control of air conditioner

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