JP3696407B2

JP3696407B2 - Stopper operation device for transport device

Info

Publication number: JP3696407B2
Application number: JP17307698A
Authority: JP
Inventors: 宜生勝谷
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1998-06-19
Filing date: 1998-06-19
Publication date: 2005-09-21
Anticipated expiration: 2018-06-19
Also published as: JP2000007145A

Description

【０００１】
【発明の属する技術分野】
本発明は、物品を載置可能な複数の物品載置台をレールの両側に配置し、レール上を走行して複数の物品載置台間を移動する搬送台車が、物品載置台に対向する位置に停止して該物品載置台との間で物品の授受を行う搬送装置に関し、特にその物品載置台の物品の移動を規制するストッパ装置の操作装置に関する。
【０００２】
【従来の技術】
ローラコンベアで搬送される物品を所定位置で停止させるべく、シリンダよりなるストッパ昇降装置で駆動されるストッパを前記ローラコンベアのローラ間の隙間を通して搬送面上に出没させるものが、特開平８−１０８９３１号公報により公知である。
【０００３】
【発明が解決しようとする課題】
ところで、物品を搬送台車に搭載して複数の物品載置台間で搬送を行う搬送装置において、物品載置台に設けたストッパ装置が不用意に下降してしまうと物品が物品載置台から落下してしまう可能性があるため、搬送台車が物品載置台に対向していないときにストッパ装置の下降を禁止することが必要である。また各々の物品載置台に設けたストッパ装置をそれぞれ専用の駆動源で駆動すると、多数の駆動源が必要になって部品点数およびコストが増加する問題がある。
【０００４】
本発明は前述の事情に鑑みてなされたもので、搬送台車と複数の物品載置台とを備えた搬送装置において、物品載置台に設けたストッパ装置の不用意な作動を防止するとともに、各物品載置台に設けたストッパ装置を駆動するための駆動源の数を削減することを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載された発明は、物品を載置可能な複数の物品載置台をレールの両側に配置し、レール上を走行して複数の物品載置台間を移動する搬送台車が、物品載置台に対向する位置に停止して該物品載置台との間で物品の授受を行う搬送装置において、それぞれの物品載置台に物品の移動を規制するストッパ装置を設けるとともに、搬送台車に前記ストッパ装置を駆動するストッパ操作部材を設け、前記ストッパ操作部材は、両端にストッパ装置を駆動する操作部をそれぞれ有してレールと直交する方向に進退可能であり、前記ストッパ装置は、物品の移動を規制する上昇位置および物品の移動を許可する下降位置間を昇降可能なストッパと、ストッパの昇降に連動して回動する第１リンク部材と、ストッパ操作部材の進退によって回動する第２リンク部材とを備えてなり、ストッパは第１リンク部材および第２リンク部材の係合によって上昇位置に保持されるとともに、ストッパ操作部材の前進移動に伴う第１リンク部材および第２リンク部材の係合解除によって重力で下降し、かつストッパ操作部材が前進移動して第１リンク部材および第２リンク部材を係合解除したときに、ストッパ操作部材は第１リンク部材に係合して物品載置台に対する搬送台車の移動を阻止することを特徴とする。
【０００６】
上記構成によれば、搬送台車が物品載置台に対向する位置に停止しないと物品載置台に設けたストッパ装置を駆動することができないため、ストッパ装置が不用意に駆動されて物品が物品載置台から落下することが確実に防止される。また複数の物品載置台にそれぞれ設けたストッパ装置を搬送台車に設けたストッパ操作部材で駆動することができるので、各々の物品載置台にそれぞれストッパ操作部材を設ける場合に比べて部品点数およびコストを大幅に削減することができる。
【０００７】
またストッパ操作部材の両端にそれぞれストッパ装置の操作部を設けたので、搬送台車が走行するレールの両側にそれぞれ配置した物品載置台のストッパ装置を共通のストッパ操作部材で操作することが可能になり、部品点数を一層削減することができる。
【０００８】
更に第１リンク部材および第２リンク部材の係合によりストッパを上昇位置に保持して予期せぬ下降を防止することができるだけでなく、ストッパ操作部材を前進移動させて第１リンク部材および第２リンク部材の係合を解除するだけで、特別の駆動源を必要とせずにストッパを重力で下降させることができる。
【０００９】
しかもストッパ操作部材が前進移動して第１リンク部材および第２リンク部材を係合解除したときに、ストッパ操作部材は第１リンク部材に係合して物品載置台に対する搬送台車の移動を阻止するので、物品載置台および搬送台車間での物品の移載中に搬送台車が妄りに移動して物品が落下するような事態が未然に防止される。
【００１０】
また請求項２に記載された発明は、請求項１の構成に加えて、下降位置にあるストッパは、ストッパ操作部材の後退移動に伴う第１リンク部材の回動よって上昇位置に復帰することを特徴とする。
【００１１】
上記構成によれば、ストッパ操作部材を後退移動させて第１リンク部材を回動させるだけで、特別の駆動源を必要とせずにストッパを重力に抗して上昇させることができる。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の実施例に基づいて説明する。図１〜図１１は本発明の一実施例を示すもので、図１は金型搬送装置の全体斜視図、図２は図１の２−２線拡大矢視図、図３は図２の３−３線断面図、図４は図２の４方向矢視図、図５は上昇位置にあるストッパ装置の側面図（図３の要部拡大図）、図６は図５の６−６線断面図、図７は上昇位置にあるストッパ装置の斜視図、図８は下降過程にあるストッパ装置の側面図、図９は下降位置にあるストッパ装置の側面図、図１０は下降位置にあるストッパ装置の斜視図、図１１は上昇過程にあるストッパ装置の側面図である。
【００１３】
図１に示すプレス用金型の搬送装置は、複数の金型Ｄ（図２および図３参照）を交換可能なプレス装置１と、使用しない金型Ｄを載置して保管する５個の金型載置台２…と、プレス装置１および金型載置台２…間を移動して金型Ｄの搬送および移載を行う搬送台車３とを備える。搬送台車３は床面に敷設した２本のレール４，４上を走行可能であり、それらレール４，４の一側にプレス装置１および２個の金型載置台２，２が配置され、他側に３個の金型載置台２…が配置される。搬送台車３の上面には、金型Ｄを支持して移動させる２列のローラコンベア５，５がレール４，４と直交する方向に設けられる。また各金型載置台２…の上面には搬送台車３の２列のローラコンベア５，５に接続可能な２列のローラコンベア６，６が設けられるとともに、それらローラコンベア６，６上に支持した金型Ｄの移動を規制すべく、一対の固定ストッパ７，７と昇降可能なストッパ装置８とが設けられる。
【００１４】
図２および図３を併せて参照すると明らかなように、搬送台車３はその台車本体１１の下面に車軸１２，１２を介して支持した４個の車輪１３…によって前記レール４，４上に支持される。台車本体１１の前後方向（走行方向）の一端部にハンドル１４が立設されており、このハンドル１４を作業者が押し引きすることにより、搬送台車３はレール４，４に沿って往復走行する。前記ローラコンベア５，５に支持された金型Ｄの両側縁をガイドすべく、台車本体１１の前後縁に沿って複数のガイドローラ１５…が配置される。
【００１５】
台車本体１１の上面に左右方向に形成した溝部１６に、揺動レバー１７の中央部が揺動自在に枢支される。台車本体１１の左右両端部にロック部材１８，１８が昇降自在に支持されており、これらロック部材１８，１８に前記揺動レバー１７の左右両端が支軸１９，１９で枢支される。操作レバー２０に接続された揺動レバー１７が揺動すると一方のロック部材１８が下降し、その下端に設けたロックピン１８₁がレール４に設けたピン孔２１に係合する。これにより、搬送台車３を５個の金型載置台２…の何れかに対向する位置に位置決めすることができる。
【００１６】
またロック部材１８，１８の上端にはストッパ１８₂，１８₂が一体に形成されており、ロック部材１８，１８のロックピン１８₁，１８₁がレール４のピン孔２１に係合していないとき、搬送台車３のローラコンベア５，５に支持された金型Ｄの移動が前記ストッパ１８₂，１８₂によって阻止される。金型Ｄの移載を行うべく、搬送台車３が何れかの金型載置台２に対向する位置に停止して一方のロック部材１８のロックピン１８₁がレール４のピン孔２１に係合すると、前記ストッパ１８₂がローラコンベア５，５の搬送面よりも下方に退没して金型Ｄの移動が許可される（図２および図３参照）。
【００１７】
台車本体１１の下面に１本のガイドレール２２が左右方向に固定されており、このガイドレール２２にガイド部材２３，２３を介してロッド状のストッパ操作部材２４が摺動自在に支持される。台車本体１１の下面に固定した一対のブラケット２５，２５間にピニオン軸２６が回転自在に支持されており、このピニオン軸２６の一端に固定したピニオン２７が前記ストッパ操作部材２４の下面に形成したラック２４₁に噛合する。
【００１８】
図４を併せて参照すると明らかなように、台車本体１１の前記ハンドル１４の近傍に立設した支柱２８の上端に操作レバー２９を一体に有する回転軸３０が支持されており、この回転軸３０に固定した駆動スプロケット３１とピニオン軸２６の他端に固定した従動スプロケット３２との無端チェーン３３が巻き掛けられる。操作レバー２９が図４の実線位置にあるとき、ストッパ操作部材２４は図３に示す中立位置にあるが、操作レバー２９を実線位置から鎖線位置に略９０°回転させると、回転軸３０の回転が駆動スプロケット３１、無端チェーン３３、従動スプロケット３２、ピニオン軸２６、ピニオン２７およびラック２４₁を介してストッパ操作部材２４に伝達される。その結果、ストッパ操作部材２４は図３に示す中立位置から左右何れかの方向に前進駆動される。
【００１９】
次に、図３および図５〜図７に基づいて、金型載置台２に設けられたストッパ装置８の構造を説明する。
【００２０】
ストッパ装置８は金型載置台２の搬送台車３に対向する部分に設けられており、金型載置台２に形成したガイド溝４１に昇降自在に支持されたストッパ４２を備える。ストッパ４２は金型載置台２のローラコンベア６，６の搬送面から上方に突出して該ローラコンベア６，６に支持した金型Ｄの移動を阻止する上昇位置（図５参照）と、ローラコンベア６，６の搬送面から下方に退没して金型Ｄの移動を許可する下降位置（図９参照）との間を昇降可能である。
【００２１】
ストッパ４２を昇降駆動すべく、金型載置台２の下面に垂下する板状のブラケット４３に、支軸４４，４５を介して板状の第１リンク部材４６およびブロック状の第２リンク部材４７がそれぞれ枢支される。前端（図５の左側）に長孔４６₁を有する第１リンク部材４６がストッパ４２の下端に形成した割り溝４２₁に嵌合しており、前記割り溝４２₁を架橋するピン４８が前記長孔４６₁を摺動自在に貫通する。また第１リンク部材４６の上面には上向きに開放する円弧状のカム面４６₂が形成されるとともに、第１リンク部材４６の下面には切欠状の被係止面４６₃が形成される。第１リンク部材４６の回動端を規制すべく、ブラケット４３の下部に固定したストッパ支持部材４９にストッパボルト５０が設けられる。
【００２２】
第２リンク部材４７は一対の側板４７₁，４７₁と、両側板４７₁，４７₁を連結する連結部４７₂とから構成されており、連結部４７₂の下面の凹部と、ブラケット４３の下端に固定したバネ座５１との間にスプリング５２が縮設される。連結部４７₂の前面に前記第１リンク部材４６の被係止面４６₃に係合可能な係止面４７₃が形成される。また左右の側板４７₁，４７₁の上端にそれぞれ被押圧部４７₄，４７₄が形成される。
【００２３】
前記ストッパ操作部材２４の先端に形成した割り溝２４₂にピン５３を介してローラ５４が支持される。ローラ５４は第１リンク部材４６のカム面４６₂に係合可能であり、またストッパ操作部材２４の先端の押圧部２４₃，２４₃は第２リンク部材４７の被押圧部４７₄，４７₄に当接可能である。
【００２４】
次に、前述の構成を備えた本発明の実施例の作用について説明する。
【００２５】
金型載置台２に金型Ｄが載置されているとき、ストッパ装置８のストッパ４２は図５に示す上昇位置にあって金型Ｄの移動を規制している。このときストッパ４２は重力で図５の矢印ａ方向に付勢されるため、第１リンク部材４６は支軸４４回りに矢印ｂ方向に回動しようとする。しかしながら、第１リンク部材４６の被係止面４６₃と第２リンク部材４７の係止面４７₃との係合により、第１リンク部材４６は矢印ｂ方向の回動を阻止されたロック状態となり、ストッパ４２を上昇位置に保持して予期せぬ下降を防止することができる。
【００２６】
前記金型載置台２から搬送台車３に金型Ｄを移載するには、操作レバー２０を操作して一方のロック部材１８のロックピン１８₁を一方のレール４の上面に自重で当接させておき、この状態で搬送台車３を目的とする金型載置台２に対向する位置まで移動させると、前記ロックピン１８₁がレール４のピン孔２１に自重で嵌合して搬送台車３の位置決めが行われる（図２および図３参照）。このようにして搬送台車３が位置決めされたとき、ストッパ操作部材２４の端部は前記金型載置台２のストッパ装置８に対向する位置にある。続いて、搬送台車３の支柱２８に設けた操作レバー２９を操作し、ピニオン２７およびラック２４₁を介してストッパ操作部材２４が図３の矢印ｃ方向に前進させる。その結果、図８に示すようにストッパ操作部材２４の押圧部２４₃，２４₃が第２リンク部材４７の被押圧部４７₄，４７₄を押圧し、その第２リンク部材４７をスプリング５２の弾発力に抗して支軸４５回りに矢印ｄ方向に回動させる。第２リンク部材４７の矢印ｄ方向の回動により、第２リンク部材４７の係止面４７₃と第１リンク部材４６の被係止面４６₃との係合が解除されるが、第１リンク部材４６はローラ５４との係合によって矢印ｂ方向の回動を阻止されており、ストッパ４２は依然として上昇位置に保持される。
【００２７】
図９および図１０に示すように、ストッパ操作部材２４が更に前進してローラ５４が第１リンク部材４６のカム面４６₂に嵌合すると、第１リンク部材４６が矢印ｂ方向に回動してストッパ４２が重力で矢印ａ方向に下降し、ストッパボルト５０の上端に当接する位置に停止する。その結果、ストッパ４２の上端がローラコンベア６，６の搬送面の下方に退没し、金型Ｄの移動が可能になる。このとき、第２リンク部材４７は被押圧部４７₄，４７₄がストッパ操作部材２４の下面との当接により矢印ｄ方向に回動した状態に保持される。
【００２８】
このようにして金型載置台２のストッパ４２が下降すると、金型載置台２のローラコンベア６，６および搬送台車３のローラコンベア５，５を駆動して金型Ｄを金型載置台２から搬送台車３に移載する。金型Ｄを搬送台車３から金型載置台２に移載する間、ストッパ操作部材２４のローラ５４が第１リンク部材４６に係合しているために搬送台車３は妄りに移動することができず、従って移載中に搬送台車３が移動して金型Ｄが落下するような事態が未然に防止される。尚、前記ローラコンベア６，６；５，５のローラはモータ等の駆動源あるいは人力により駆動可能であるが、金型Ｄを人力で押して金型載置台２から搬送台車３に移載することも可能である。
【００２９】
金型Ｄが搬送台車３に移載された後に操作レバー２９を元の位置に戻すと、ストッパ操作部材２４が図１１の矢印ｃ′方向に後退するため、そのローラ５４にカム面４６₂を押圧された第１リンク部材４６が矢印ｂ′方向に回動し、ストッパ４２を矢印ａ′方向に押し上げる。それと同時にストッパ操作部材２４の押圧部２４₃，２４₃による押圧を解除された第２リンク部材４７がスプリング５２の弾発力でｄ′方向に回動するため、ストッパ操作部材２４が中立位置に復帰したとき、図５に示すように第１リンク部材４６の被係止面４６₃と第２リンク部材４７の係止面４７₃とが再び係合し、第１リンク部材４６は矢印ｂ方向の回動を阻止された状態にロックされてストッパ４２は上昇位置に保持される。
【００３０】
このようにストッパ４２は重力で下降し、またストッパ操作部材２４が後退する際の荷重で上昇するので、ストッパ４２を昇降させるための当別の駆動源が不要である。
【００３１】
而して、金型載置台２から金型Ｄを受け取った搬送台車３はレール４，４上を走行し、プレス装置１に対向する位置に停止して金型Ｄを受け渡す。プレス装置１上の金型Ｄを元の金型載置台２に戻す場合には、上述した工程を逆に行えばよい。
【００３２】
以上のように、搬送台車３が何れかの金型載置台２に対向する位置に停止し、そのストッパ操作部材２４で金型載置台２のストッパ装置８を駆動しない限り、前記ストッパ装置８が不用意に駆動されることがないため、金型載置台２からの金型Ｄの落下を確実に防止することができる。しかも複数の金型載置台２…にそれぞれストッパ装置８…の駆動手段を設けることなく、搬送台車３に設けたストッパ操作部材２４で各金型載置台２…のストッパ装置８…を駆動することができるので、部品点数およびコストを大幅に削減することができる。またレール４，４の両側に複数の金型載置台２…を配置し、搬送台車３のストッパ操作部材２４の両端部でレール４，４の両側の金型載置台２…のストッパ装置８…をそれぞれ駆動することができるので、ストッパ操作部材２４の数を１個で済まして部品点数を一層削減することができる。
【００３３】
以上、本発明の実施例を詳述したが、本発明は前記実施例に限定されるものでなく、種々の設計変更を行うことが可能である。
【００３４】
例えば、実施例では物品として金型Ｄを例示したが、本発明は金型Ｄ以外の物品の搬送に適用することができる。
【００３５】
【発明の効果】
以上のように請求項１に記載された発明によれば、搬送台車が物品載置台に対向する位置に停止しないと物品載置台に設けたストッパ装置を駆動することができないため、ストッパ装置が不用意に駆動されて物品が物品載置台から落下することが確実に防止される。また複数の物品載置台にそれぞれ設けたストッパ装置を搬送台車に設けたストッパ操作部材で駆動することができるので、各々の物品載置台にそれぞれストッパ操作部材を設ける場合に比べて部品点数およびコストを大幅に削減することができる。
【００３６】
またストッパ操作部材の両端にそれぞれストッパ装置の操作部を設けたので、搬送台車が走行するレールの両側にそれぞれ配置した物品載置台のストッパ装置を共通のストッパ操作部材で操作することが可能になり、部品点数を一層削減することができる。
【００３７】
更に第１リンク部材および第２リンク部材の係合によりストッパを上昇位置に保持して予期せぬ下降を防止することができるだけでなく、ストッパ操作部材を前進移動させて第１リンク部材および第２リンク部材の係合を解除するだけで、特別の駆動源を必要とせずにストッパを重力で下降させることができる。
【００３８】
しかもストッパ操作部材が前進移動して第１リンク部材および第２リンク部材を係合解除したときに、ストッパ操作部材は第１リンク部材に係合して物品載置台に対する搬送台車の移動を阻止するので、物品載置台および搬送台車間での物品の移載中に搬送台車が妄りに移動して物品が落下するような事態が未然に防止される。
【００３９】
また請求項２に記載された発明によれば、ストッパ操作部材を後退移動させて第１リンク部材を回動させるだけで、特別の駆動源を必要とせずにストッパを重力に抗して上昇させることができる。
【図面の簡単な説明】
【図１】金型搬送装置の全体斜視図
【図２】図１の２−２線拡大矢視図
【図３】図２の３−３線断面図
【図４】図２の４方向矢視図
【図５】上昇位置にあるストッパ装置の側面図（図３の要部拡大図）
【図６】図５の６−６線断面図
【図７】上昇位置にあるストッパ装置の斜視図
【図８】下降過程にあるストッパ装置の側面図
【図９】下降位置にあるストッパ装置の側面図
【図１０】下降位置にあるストッパ装置の斜視図
【図１１】上昇過程にあるストッパ装置の側面図
【符号の説明】
Ｄ金型（物品）
２金型載置台（物品載置台）
３搬送台車
４レール
８ストッパ装置
２４ストッパ操作部材
２４₃ 押圧部（操作部）
４２ストッパ
４６第１リンク部材
４７第２リンク部材
５４ローラ（操作部）[0001]
BACKGROUND OF THE INVENTION
In the present invention, a plurality of article placement tables on which articles can be placed are arranged on both sides of a rail, and a transport carriage that travels on the rail and moves between the plurality of article placement tables is located at a position facing the article placement table. More particularly, the present invention relates to an operation device for a stopper device that restricts movement of an article on the article mounting table.
[0002]
[Prior art]
In order to stop an article conveyed by a roller conveyor at a predetermined position, a stopper driven by a stopper lifting / lowering device made of a cylinder is caused to appear and disappear on a conveying surface through a gap between rollers of the roller conveyor. It is known from the Gazette.
[0003]
[Problems to be solved by the invention]
By the way, in a transport device that loads an article on a transport carriage and transports it between a plurality of article mounting tables, if the stopper device provided on the article mounting table is inadvertently lowered, the article falls from the article mounting table. Therefore, it is necessary to prohibit the lowering of the stopper device when the transport carriage is not facing the article placement table. Further, when the stopper device provided on each article mounting table is driven by a dedicated drive source, a large number of drive sources are required, which increases the number of parts and the cost.
[0004]
The present invention has been made in view of the above-described circumstances, and in a transport apparatus including a transport carriage and a plurality of article mounting tables, the article device prevents inadvertent operation of a stopper device provided on the article mounting table. It is an object to reduce the number of drive sources for driving the stopper device provided on the mounting table.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a plurality of article mounting tables on which an article can be placed are arranged on both sides of the rail, and the vehicle travels on the rail to establish a space between the plurality of article mounting tables. transport carriages moving is, in the conveying apparatus for transferring articles between the mounting table article stops at a position opposed to the article rack is provided with a stopper device for regulating movement of the articles, each article rack In addition, a stopper operating member for driving the stopper device is provided on the transport carriage, and the stopper operating member has an operation portion for driving the stopper device at both ends, and can be advanced and retracted in a direction perpendicular to the rail. The apparatus includes a stopper capable of moving up and down between a raised position that restricts movement of the article and a lowered position that permits movement of the article, a first link member that rotates in conjunction with raising and lowering of the stopper, and a stopper And a second link member that rotates as the working member advances and retreats. The stopper is held in the raised position by the engagement of the first link member and the second link member, and the stopper operating member is moved in accordance with the forward movement of the stopper operating member. When the first link member and the second link member are disengaged and lowered by gravity, and the stopper operation member moves forward to disengage the first link member and the second link member, the stopper operation member is It is characterized in that the movement of the transport carriage relative to the article mounting table is prevented by engaging with the link member .
[0006]
According to the above configuration, since the stopper device provided on the article mounting table cannot be driven unless the conveyance carriage stops at a position facing the article mounting table, the stopper device is inadvertently driven and the article is placed on the article mounting table. Is reliably prevented from falling off. Moreover, since the stopper device provided on each of the plurality of article mounting tables can be driven by the stopper operating member provided on the conveyance carriage, the number of parts and the cost can be reduced as compared with the case where each of the article mounting tables is provided with the stopper operating member. It can be greatly reduced.
[0007]
In addition, since the stopper device operating portions are provided at both ends of the stopper operating member, it becomes possible to operate the stopper devices of the article mounting table respectively arranged on both sides of the rail on which the transport carriage travels with a common stopper operating member. The number of parts can be further reduced.
[0008]
Furthermore , not only can the stopper be held in the raised position by the engagement of the first link member and the second link member to prevent an unexpected lowering, but the stopper operating member is moved forward to move the first link member and the second link member forward. By simply disengaging the link member, the stopper can be lowered by gravity without requiring a special drive source.
[0009]
In addition, when the stopper operating member moves forward to disengage the first link member and the second link member, the stopper operating member engages with the first link member to prevent the transport carriage from moving relative to the article mounting table. Therefore, it is possible to prevent a situation in which the conveyance carriage moves in a sloppy manner and the article falls during the transfer of the article between the article placement table and the conveyance carriage.
[0010]
According to a second aspect of the present invention, in addition to the configuration of the first aspect, the stopper in the lowered position returns to the raised position by the rotation of the first link member accompanying the backward movement of the stopper operating member. Features.
[0011]
According to the above configuration, the stopper can be lifted against gravity without requiring a special drive source simply by moving the stopper operating member backward and rotating the first link member.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings. 1 to 11 show an embodiment of the present invention, FIG. 1 is an overall perspective view of a mold conveying device, FIG. 2 is an enlarged view taken along line 2-2 in FIG. 1, and FIG. Fig. 4 is a sectional view taken along line 3-3, Fig. 4 is a view taken in the direction of the arrow 4 in Fig. 2, Fig. 5 is a side view of the stopper device in the raised position (enlarged view of the main part in Fig. 3), and Fig. 6 is 6-6 in Fig. 5. 7 is a perspective view of the stopper device in the raised position, FIG. 8 is a side view of the stopper device in the lowering process, FIG. 9 is a side view of the stopper device in the lowered position, and FIG. 10 is in the lowered position. FIG. 11 is a side view of the stopper device in the ascending process.
[0013]
The press mold conveying apparatus shown in FIG. 1 includes a press apparatus 1 that can exchange a plurality of molds D (see FIGS. 2 and 3) and five molds D that are not used. And a transfer carriage 3 that moves between the press device 1 and the mold mount 2 to transfer and transfer the mold D. The transport carriage 3 can travel on the two rails 4 and 4 laid on the floor surface, and the press device 1 and the two mold mounting tables 2 and 2 are arranged on one side of the rails 4 and 4. Three mold mounting tables 2 are arranged on the other side. Two rows of roller conveyors 5 and 5 that support and move the mold D are provided on the upper surface of the transport carriage 3 in a direction perpendicular to the rails 4 and 4. Further, two rows of roller conveyors 6 and 6 that can be connected to two rows of roller conveyors 5 and 5 of the transport carriage 3 are provided on the upper surface of each mold mounting table 2... And supported on the roller conveyors 6 and 6. In order to restrict the movement of the mold D, a pair of fixed stoppers 7 and 7 and a stopper device 8 that can be moved up and down are provided.
[0014]
2 and 3, the transport carriage 3 is supported on the rails 4 and 4 by four wheels 13 supported on the lower surface of the carriage body 11 via axles 12 and 12. Is done. A handle 14 is provided upright at one end of the carriage main body 11 in the front-rear direction (traveling direction). The operator pushes and pulls the handle 14 to reciprocate the carriage 3 along the rails 4 and 4. . A plurality of guide rollers 15 are arranged along the front and rear edges of the carriage body 11 so as to guide both side edges of the mold D supported by the roller conveyors 5 and 5.
[0015]
A central portion of the swing lever 17 is pivotally supported by a groove portion 16 formed in the left-right direction on the upper surface of the cart body 11. Lock members 18 and 18 are supported at both left and right ends of the carriage body 11 so as to be movable up and down, and left and right ends of the swing lever 17 are pivotally supported by the support shafts 19 and 19 on the lock members 18 and 18. When the swing lever 17 connected to the operation lever 20 swings, one lock member 18 is lowered, and a lock pin 18 ₁ provided at the lower end thereof engages with a pin hole 21 provided in the rail 4. Thereby, the conveyance trolley | bogie 3 can be positioned in the position which opposes any of the five metal mold mounting bases 2 ....
[0016]
Further, stoppers 18 ₂ and 18 ₂ are integrally formed at the upper ends of the lock members 18 and 18, and the lock pins 18 ₁ and 18 _{1 of the} lock members 18 and 18 are not engaged with the pin holes 21 of the rail 4. At this time, the movement of the mold D supported by the roller conveyors 5 and 5 of the transport carriage 3 is blocked by the stoppers 18 ₂ and 18 ₂ . In order to transfer the mold D, the transport carriage 3 stops at a position facing one of the mold mounting tables 2 and the lock pin 18 _{1 of one} lock member 18 is engaged with the pin hole 21 of the rail 4. Then, the stopper 18 ₂ retracts below the conveying surfaces of the roller conveyors 5 and 5, and the movement of the mold D is permitted (see FIGS. 2 and 3).
[0017]
One guide rail 22 is fixed to the lower surface of the cart body 11 in the left-right direction, and a rod-shaped stopper operating member 24 is slidably supported on the guide rail 22 via guide members 23, 23. A pinion shaft 26 is rotatably supported between a pair of brackets 25, 25 fixed to the lower surface of the cart body 11, and a pinion 27 fixed to one end of the pinion shaft 26 is formed on the lower surface of the stopper operating member 24. It meshes with the rack 24 ₁ .
[0018]
As is apparent when referring to FIG. 4, a rotary shaft 30 integrally having an operation lever 29 is supported on an upper end of a support column 28 erected in the vicinity of the handle 14 of the carriage body 11. An endless chain 33 is wound around a drive sprocket 31 fixed to the shaft and a driven sprocket 32 fixed to the other end of the pinion shaft 26. When the operation lever 29 is in the solid line position in FIG. 4, the stopper operation member 24 is in the neutral position shown in FIG. 3, but when the operation lever 29 is rotated from the solid line position to the chain line position by approximately 90 °, the rotation shaft 30 rotates. Is transmitted to the stopper operating member 24 through the drive sprocket 31, the endless chain 33, the driven sprocket 32, the pinion shaft 26, the pinion 27, and the rack 24 ₁ . As a result, the stopper operating member 24 is driven forward in the left or right direction from the neutral position shown in FIG.
[0019]
Next, the structure of the stopper device 8 provided on the mold mounting table 2 will be described with reference to FIGS. 3 and 5 to 7.
[0020]
The stopper device 8 is provided in a portion of the mold mounting table 2 that faces the conveyance carriage 3, and includes a stopper 42 that is supported by a guide groove 41 formed in the mold mounting table 2 so as to be movable up and down. The stopper 42 protrudes upward from the conveying surface of the roller conveyors 6 and 6 of the mold mounting table 2 and moves upward to prevent the movement of the mold D supported by the roller conveyors 6 and 6 (see FIG. 5). It is possible to move up and down from a lowered position (see FIG. 9) that retreats downward from the transport surfaces 6 and 6 and permits the movement of the mold D.
[0021]
A plate-like first link member 46 and a block-like second link member 47 are attached to a plate-like bracket 43 suspended from the lower surface of the mold mounting table 2 via support shafts 44 and 45 in order to drive the stopper 42 up and down. Are pivotally supported. A first link member 46 having a long hole 46 ₁ at the front end (left side in FIG. 5) is fitted in a split groove 42 ₁ formed at the lower end of the stopper 42, and a pin 48 that bridges the split groove 42 ₁ the long holes 46 ₁ through slidably. Together with the arcuate cam surfaces 46 ₂ is formed to open upward on the upper surface of the first link member 46, the locking surface 46 ₃ of the notch-like on the lower surface of the first link member 46 is formed. In order to restrict the rotation end of the first link member 46, a stopper bolt 50 is provided on a stopper support member 49 fixed to the lower portion of the bracket 43.
[0022]
The second link member 47 and the pair of side plates 47 _1, 47 _1, is composed of a side plate 47 _1, 47 ₁ coupling portion 47 ₂ which connects a coupling portion 47 ₂ and the lower surface of the recess of the bracket 43 A spring 52 is contracted between the spring seat 51 fixed to the lower end. The locking surface 46 _3-engaging locking surface 47 ₃ of the connecting portion 47 ₂ of the the front first link member 46 is formed. Pressed portions 47 ₄ and 47 ₄ are formed at the upper ends of the left and right side plates 47 ₁ and 47 ₁ , respectively.
[0023]
A roller 54 is supported via a pin 53 in a split groove 24 ₂ formed at the tip of the stopper operating member 24. Roller 54 is engageable with the cam surface 46 ₂ of the first link member 46, also pressure end portion 24 ₃ of the stopper operating member 24, 24 ₃ pressed portion 47 ₄ of the second link member 47, 47 ₄ Can be contacted.
[0024]
Next, the operation of the embodiment of the present invention having the above-described configuration will be described.
[0025]
When the mold D is placed on the mold placing table 2, the stopper 42 of the stopper device 8 is in the raised position shown in FIG. 5 and restricts the movement of the mold D. At this time, since the stopper 42 is urged by gravity in the direction of arrow a in FIG. 5, the first link member 46 tends to rotate about the support shaft 44 in the direction of arrow b. However, by the engagement between the locking surface 46 ₃ of the first link member 46 and the locking surface 47 ₃ of the second link member 47, the locked state the first link member 46 which is prevented rotation of the direction of the arrow b Thus, the stopper 42 can be held at the raised position to prevent an unexpected lowering.
[0026]
In order to transfer the mold D from the mold mounting table 2 to the transport carriage 3, the operation lever 20 is operated to bring the lock pin 18 ₁ of one lock member 18 into contact with the upper surface of one rail 4 by its own weight. In this state, when the transfer carriage 3 is moved to a position facing the target mold mounting table 2, the lock pin 18 ₁ is fitted into the pin hole 21 of the rail 4 by its own weight, and the transfer carriage 3. Is positioned (see FIGS. 2 and 3). When the transport carriage 3 is positioned in this way, the end of the stopper operating member 24 is in a position facing the stopper device 8 of the mold mounting table 2. Subsequently, the operation lever 29 provided on the column 28 of the transport carriage 3 is operated, and the stopper operating member 24 is advanced in the direction of arrow c in FIG. 3 via the pinion 27 and the rack 24 ₁ . As a result, as shown in FIG. 8, the pressing portions 24 ₃ and 24 ₃ of the stopper operating member 24 press the pressed portions 47 ₄ and 47 ₄ of the second link member 47, and the second link member 47 is pressed by the spring 52. It is rotated in the direction of the arrow d around the support shaft 45 against the elastic force. By the rotation of the second link member 47 in the direction of the arrow d, the engagement between the locking surface 47 ₃ of the second link member 47 and the locked surface 46 ₃ of the first link member 46 is released. The link member 46 is prevented from rotating in the direction of the arrow b by engagement with the roller 54, and the stopper 42 is still held in the raised position.
[0027]
As shown in FIGS. 9 and 10, the roller 54 further advances the stopper operating member 24 is fitted into the cam surface 46 ₂ of the first link member 46, the first link member 46 is rotated in the direction of the arrow b Thus, the stopper 42 descends in the direction of arrow a due to gravity and stops at a position where it abuts against the upper end of the stopper bolt 50. As a result, the upper end of the stopper 42 retreats below the conveying surface of the roller conveyors 6 and 6, and the mold D can be moved. At this time, the second link member 47 is held in a state in which the pressed portions 47 ₄ and 47 ₄ are rotated in the direction of the arrow d due to contact with the lower surface of the stopper operating member 24.
[0028]
When the stopper 42 of the mold mounting table 2 is lowered in this way, the roller conveyors 6 and 6 of the mold mounting table 2 and the roller conveyors 5 and 5 of the transport carriage 3 are driven to place the mold D into the mold mounting table 2. To the transport carriage 3. While the mold D is transferred from the transport carriage 3 to the mold mounting table 2, the roller 54 of the stopper operating member 24 is engaged with the first link member 46, so that the transport carriage 3 can move in a delusion. Therefore, it is possible to prevent a situation in which the transport carriage 3 moves and the mold D falls during the transfer. The rollers of the roller conveyors 6, 6; 5, 5 can be driven by a driving source such as a motor or by human power, but the mold D is manually pushed to be transferred from the mold mounting table 2 to the transporting carriage 3. Is also possible.
[0029]
When the mold D is returned to the original position the operating lever 29 after being transferred to the transport vehicle 3, the stopper operating member 24 is retracted in the arrow c 'direction in FIG. 11, the cam surfaces 46 ₂ to the roller 54 The pressed first link member 46 rotates in the direction of the arrow b ′ and pushes up the stopper 42 in the direction of the arrow a ′. At the same time, the second link member 47 released from the pressing by the pressing portions 24 ₃ and 24 ₃ of the stopper operating member 24 is rotated in the d ′ direction by the elastic force of the spring 52, so that the stopper operating member 24 is in the neutral position. when returning, and the locking surface 46 ₃ of the first link member 46 and the locking surface 47 ₃ of the second link member 47 engages again as shown in FIG. 5, the first link member 46 is the direction of the arrow b The stopper 42 is held in the raised position by being locked in a state in which the rotation of the stopper 42 is prevented.
[0030]
In this way, the stopper 42 is lowered by gravity, and is raised by the load when the stopper operating member 24 is retracted, so that another drive source for raising and lowering the stopper 42 is unnecessary.
[0031]
Thus, the transport carriage 3 that has received the mold D from the mold mounting table 2 travels on the rails 4 and 4, stops at a position facing the press device 1, and delivers the mold D. When the mold D on the press device 1 is returned to the original mold mounting table 2, the above-described steps may be performed in reverse.
[0032]
As described above, as long as the transport carriage 3 stops at a position facing any mold mounting table 2 and the stopper device 8 of the mold mounting table 2 is not driven by the stopper operating member 24, the stopper device 8 is Since it is not driven carelessly, it is possible to reliably prevent the mold D from dropping from the mold mounting table 2. Moreover, the stopper device 8 of each mold mounting table 2 is driven by the stopper operating member 24 provided on the transport carriage 3 without providing the driving means of the stopper device 8 to each of the plurality of mold mounting tables 2. Therefore, the number of parts and the cost can be greatly reduced. Further, a plurality of mold mounting tables 2 are arranged on both sides of the rails 4, 4, and the stopper devices 8 of the mold mounting tables 2 on both sides of the rails 4, 4 at both ends of the stopper operating member 24 of the transport carriage 3. Since the number of the stopper operation members 24 is one, the number of parts can be further reduced.
[0033]
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various design change is possible.
[0034]
For example, although the mold D is illustrated as an article in the embodiment, the present invention can be applied to conveyance of articles other than the mold D.
[0035]
【The invention's effect】
As described above, according to the first aspect of the present invention, the stopper device provided on the article mounting table cannot be driven unless the transport carriage stops at a position facing the article mounting table. It is reliably prevented that the article is driven to fall from the article mounting table. Moreover, since the stopper device provided on each of the plurality of article mounting tables can be driven by the stopper operating member provided on the conveyance carriage, the number of parts and the cost can be reduced as compared with the case where each of the article mounting tables is provided with the stopper operating member. It can be greatly reduced.
[0036]
Is provided with the operating portion of each stopper device at both ends of the or scan stopper operating member, can manipulate the stopper device article rack arranged on both sides of the rail transport carriage travels by a common stopper operating member Thus, the number of parts can be further reduced.
[0037]
Furthermore , not only can the stopper be held in the raised position by the engagement of the first link member and the second link member to prevent an unexpected lowering, but the stopper operating member is moved forward to move the first link member and the second link member forward. By simply disengaging the link member, the stopper can be lowered by gravity without requiring a special drive source.
[0038]
In addition, when the stopper operating member moves forward to disengage the first link member and the second link member, the stopper operating member engages with the first link member to prevent the transport carriage from moving relative to the article mounting table. Therefore, it is possible to prevent a situation in which the conveyance carriage moves in a sloppy manner and the article falls during the transfer of the article between the article placement table and the conveyance carriage.
[0039]
According to the second aspect of the present invention, the stopper can be lifted against gravity without requiring a special drive source simply by moving the stopper operating member backward and rotating the first link member. be able to.
[Brief description of the drawings]
1 is an overall perspective view of a mold transfer device. FIG. 2 is an enlarged view taken along line 2-2 in FIG. 1. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. FIG. 5 is a side view of the stopper device in the raised position (enlarged view of the main part in FIG. 3).
6 is a cross-sectional view taken along line 6-6 in FIG. 5. FIG. 7 is a perspective view of the stopper device in the raised position. FIG. 8 is a side view of the stopper device in the descending process. Side view [FIG. 10] Perspective view of the stopper device in the lowered position [FIG. 11] Side view of the stopper device in the ascending process [Explanation of symbols]
D Mold (article)
2 Mold mounting table (article mounting table)
3 Carriage Cart 4 Rail 8 Stopper Device 24 Stopper Operation Member 24 ₃ Pressing Section (Operating Section)
42 Stopper 46 First link member 47 Second link member 54 Roller (operation unit)

Claims

A plurality of article mounting tables (2) on which the article (D) can be placed are arranged on both sides of the rail (4), and the carriage travels on the rail (4) and moves between the plurality of article mounting tables (2). carriage (3) is, in the transfer apparatus for transferring an article (D) between the article placing table is stopped at a position opposed to the article rack (2) (2),
A stopper device (8) for restricting the movement of the article (D) is provided on each article mounting table (2), and a stopper operation member (24) for driving the stopper device (8) is provided on the transport carriage (3). ,
The stopper operation member (24) has operation portions (24 ₃ , 54) for driving the stopper device (8) at both ends , and can advance and retreat in a direction perpendicular to the rail (4),
The stopper device (8) includes a stopper (42) that can move up and down between a raised position that restricts the movement of the article (D) and a lowered position that allows the movement of the article (D), and interlocks with the raising and lowering of the stopper (42). The first link member (46) that rotates and the second link member (47) that rotates when the stopper operating member (24) advances and retreats, and the stopper (42) is provided with the first link member (46). ) And the second link member (47) are held in the raised position, and the first link member (46) and the second link member (47) are engaged as the stopper operating member (24) moves forward. When the stopper operation member (24) moves forward and the first link member (46) and the second link member (47) are disengaged by lowering due to gravity by the release, the stopper operation member (24) 1 phosphorus Stoppers operating device in the transport device, characterized in that to prevent the movement of the transport vehicle (3) engages the member (46) with respect to article rack (2).

Stopper in the lowered position (42), characterized in that to return to the raised position by rotation of the first link member with the rearward movement (46) of the stopper operating member (24), conveying of claim 1 Stopper operating device in the device.