JP3645997B2

JP3645997B2 - Honeycomb cylinder manufacturing equipment

Info

Publication number: JP3645997B2
Application number: JP36102397A
Authority: JP
Inventors: 敏明岡田; 光典竹川; 幸悟金田
Original assignee: Yutaka Giken Co Ltd
Current assignee: Yutaka Giken Co Ltd
Priority date: 1997-12-26
Filing date: 1997-12-26
Publication date: 2005-05-11
Anticipated expiration: 2017-12-26
Also published as: JPH11188439A

Description

【０００１】
【発明の属する技術分野】
本発明は、主として金属製触媒担体に用いるハニカム筒体の製造装置に関し、特に、金属平板及び金属波板を重ね合わせて巻き取り軸により螺旋状に巻き取って、ハニカム筒体を成形する装置に関する。
【０００２】
【従来の技術】
かゝるハニカム筒体の製造装置は、例えば特開平９−１５０２１７号公報に開示されているように、既に知られている。
【０００３】
【発明が解決しようとする課題】
上記公報に開示されたハニカム筒体の製造装置では、金属平板及び金属波板を重ね合わせて巻き取り軸により螺旋状に巻き取って、ハニカム筒体を成形した後、巻き取り軸を軸方向に移動して、ハニカム筒体から引き抜き、ハニカム筒体を取り出すようにしている。即ち、ハニカム筒体の成形位置と、その成形後の取り出し位置とを一致させている。
【０００４】
しかしながら、ハニカム筒体の成形位置では、その周囲に金属平板及び金属波板の送り装置や溶接装置が配設されているのが一般であるから、それら装置に干渉されずに、成形後のハニカム筒体を取り出すことが極めて困難である。
【０００５】
本発明は、かゝる事情に鑑みてなされたもので、ハニカム筒体の成形位置周りの各種装置に何ら干渉されることなく、成形後のハニカム筒体を容易に取り出すことができる、前記ハニカム筒体の製造装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明は、金属平板及び金属波板を重ね合わせて巻き取り軸により螺旋状に巻き取って、ハニカム筒体を成形する、ハニカム筒体の製造装置において、機台に固定される第１軸受台に、巻き取り軸の一端を結合する第１スピンドルを支承する一方、機台に移動台を、これが巻き取り軸の軸方向に沿って巻き取り位置及び払出し位置間を移動し得るように設け、この移動台に固定される第２軸受台に、巻き取り軸の他端を解放可能に保持し得る第２スピンドルを支承し、また移動台には、巻き取り軸に巻き取られた金属平板及び金属波板の両側端を押さえる一対のワーク押さえ部材を設け、第１及び第２スピンドルにこれらを同期駆動し得る巻き取り軸駆動手段を連結し、移動台の巻き取り位置では巻き取り軸の他端の第２スピンドルによる保持及び解放が可能であり、移動台の払出し位置では巻き取り軸から成形されたハ１カム筒体がワーク押さえ部材により払出されるようにしたことを第１の特徴とする。
【０００７】
而して、巻き取り軸上でハニカム筒体を成形した後は、巻き取り軸の他端を自由にして、移動台を払出し位置まで移動すれば、ワーク押さえ部材が巻き取り位置から離隔した払出し位置でハニカム筒体を巻き取り軸の他端から払出す。したがって、この第１の特徴によれば、巻き取り位置の周囲に配設される各種機器に干渉されることなく、ハニカム筒体の払出しが可能となる。
【０００８】
また本発明は、上記特徴に加えて、巻き取り軸による金属平板及び金属波板の巻き取り時、金属波板の谷部と金属平板との接触部にレーザを照射して溶接する第１レーザ溶接手段と、金属波板の山部と金属平板との接触部にレーザを照射して溶接する第２レーザ溶接手段とを、それらの照射レーザ方向線が巻き取り軸を中心にして半径方向外方へ相互にＶ字状に開くよう、機台に配設したことを第２の特徴とする。
【０００９】
この第２の特徴によれば、巻き取り軸に被溶接物が存在しない場合、誤って第１又は第２レーザ溶接手段を作動しても、その一方からの照射レーザが他方に当たることはなく、その損傷を回避することができる。
【００１０】
さらにまた本発明は、第２の特徴に加えて、巻き取り軸、第１及び第２スピンドルを水平に配置し、第１レーザ溶接手段及び第２レーザ溶接手段を、それらの照射レーザ方向線が巻き取り軸を中心にして上方へ向かって相互にＶ字状に開くよう、機台に配設したことを第３の特徴とする。
【００１１】
この第３の特徴によれば、各レーザ溶接手段からは、レーザが常に作業者の眼下に照射されることになり、作業者の眼を照射レーザから保護することができる。
【００１２】
さらにまた本発明は、第２又は第３の特徴に加えて、第１レーザ溶接手段を支持する第１移動板及び第２レーザ溶接手段を支持する第２移動板を巻き取り軸に対して進退可能に機台に取付け、その第１移動板に、巻き取り軸に巻き取られる金属波板の外周面を押圧し得る第１押圧ローラを設けると共に、この第１押圧ローラを該金属波板の外周面に押圧すべく第１移動板を前進方向へ付勢する第１付勢手段を第１移動板に連結し、また第２移動板に、巻き取り軸に巻き取られる金属平板の外周面を押圧し得る第２押圧ローラ５４₂を設けると共に、この第２押圧ローラを該金属平板の外周面に押圧すべく第２移動板を前進方向へ付勢する第２付勢手段を第２移動板に連結したことを第４の特徴とする。
【００１３】
而して、巻き取り軸による金属波板及び金属平板の巻き取りが進行するに伴い、それぞれの直径が増大するので、第１及び第２押圧ローラは、金属波板及び金属平板の外周面に一定の圧力をもって圧接した状態を保ちながら、第１及び第２レーザ溶接手段を伴って第１及び第２移動板と共に後退する。したがって、この第４の特徴によれば、金属平板の直径の増大によるも、第１レーザ溶接手段からの照射レーザの焦点を金属波板の谷部と金属平板との規定の接触部に、また第２レーザ溶接手段からの照射レーザの焦点を金属波板の山部と金属平板との規定の接触部にそれぞれ保持し続けることができ、常に安定したレーザ溶接が可能となる。
【００１４】
さらにまた本発明は、第４の特徴に加えて、第１移動板に、金属波板の谷部と金属平板との溶接部直前で金属波板の外周面を押圧し得る第１補助押圧ローラを設け、また第２移動板に、金属波板の山部と金属平板との溶接部直前で金属平板の外周面を押圧し得る第２補助押圧ローラを設けたことを第５の特徴とする。
【００１５】
この第５の特徴によれば、各溶接部では、金属波板及び金属平板の良好な密着状態を確保して、それらのレーザ溶接を確実なものとすることができる。
【００１６】
【発明の実施の形態】
本発明の実施の形態を、添付図面に示す本発明の実施例に基づいて以下に説明する。
【００１７】
図１ないし図１２は本発明の第１実施例を示すもので、図１は金属製触媒担体の正面図、図２は図１の２−２線断面図、図３は巻き取り前の金属平板及び金属波板の側面図、図４はハニカム体の製造装置の平面図、図５は図４の要部の平面図、図６は図４の６−６線断面図、図７は図６に対応した作用説明図、図８は図６の８−８線拡大断面図、図９は図４の９−９線断面図、図１０は図９の要部拡大図、図１１は図１０の１１矢視図、図１２は金属平板及び金属波板の巻き取り作用説明図である。
【００１８】
先ず図１及び図２において、金属製触媒担体１は、金属平板２及び金属波板３を重ね合わせて螺旋状に密に巻くと共に、両板２，３の接触部を溶接してなるハニカム筒体４と、このハニカム筒体４を収容、保持すべく、その外周面に嵌合して溶接される円筒状のハウジング５とから構成される。
【００１９】
上記ハニカム筒体４を製造するに当たっては、図３に示すように、ハニカム筒体４の一個分に対応する所定長さの金属平板２及び金属波板３が用意される。これらの素材は、例えばステンレス鋼板である。金属平板２の長さは、金属波板３のそれより長く設定される。金属波板３の、巻き取り方向に沿う始端は、谷部から始まっており、また終端側では波の振幅ｈが漸減するように形成される。さらに金属波板３の山の頂部ａ及び谷の底部ｂは、平坦に形成される。
【００２０】
さて、ハニカム筒体４の製造装置について図４ないし図１１を参照しながら説明する。
【００２１】
図４ないし図８において、複数本の支柱７，７…により水平に支えられる長方形の機台８上には、その長辺方向に延びる一対のレール９，９が敷設され、またこのレール９，９と直交するようにして、相対向する左右一対の支持壁１０₁，１０₂が立設される。また機台８の下面にも、上記支持壁１０₁，１０₂と対応する左右一対の小支持壁１１₁，１１₂が固着される。
【００２２】
レール９，９には移動台１２が、右方の支持壁に設けられた切欠き状の出入口１３を貫通して摺動自在に載せられる。この移動台１２に、機台８の下面に取付けられた移動用エアシリンダ１４のピストンロッド１４ａが、機台８中心部の長孔状開口部１５を貫通するアーム部材１６を介して連結される。而して、エアシリンダ１４の収縮と伸長により移動台１２を、左方の支持壁１０₁に近接する巻き取り位置Ａと、同支持壁１０₁から離隔する払出し位置Ｂとへ移動させることができる。この移動台１２は、機台８の開口部８ａの直上に位置する開口部１２ａを有する。
【００２３】
機台８上に固定される第１軸受台１７₁が左方の支持壁１０₁外側面に隣接して配設され、これにレール９，９と平行な第１スピンドル１８₁が支承される。この第１スピンドル１８₁は、左方の支持壁１０₁を貫通した端部にチャック１９を備えており、これにより細径の巻き取り軸３０の左端部が固持される。この巻き取り軸３０は、前記金属平板２及び金属波板３を巻き取ってハニカム筒体４を成形するもので、その左端部近傍から始まって右端面に開口するスリット３０ａを有し、これに前記金属平板２の巻き取り始端が挟入されるようになっている。
【００２４】
一方、移動台１２には、右方の支持壁１０₂の外側に位置する第１軸受台１７₂が固着され、これに第１スピンドル１８₁と同軸に並ぶ第２スピンドル１８₂が支承される。この第２スピンドル１８₂は、その一端部が移動台１２の巻き取り位置Ａで右方の支持壁１０₂の出入口１３に臨むようになっており、その端部には、移動台１２の巻き取り位置Ａで巻き取り軸３０の右端を解放可能に保持し得るコレットチャック２０が設けられる。
【００２５】
図８に示すように、コレットチャック２０の外筒２１は、複数のガイド軸２２を介して第２スピンドル１８₂の端面に軸方向摺動可能に取付けられ、その間に、外筒２１を第１スピンドル１８₁側へ一定の荷重をもって付勢するばね２３が挿入される。外筒２１内のコレット爪２４には、第２スピンドル１８₂の中心部を摺動自在に貫通する作動軸２５が連結され、これが第２スピンドル１８₂に取付けられた牽引用エアシリンダ２６のピストン２７に連結される。而して、コレット爪２４は、ピストン２７の左動により巻き取り軸３０を解放する開き状態となり、右動により巻き取り軸３０を保持する閉じ状態となる。さらにピストン２７を右動すると、ばね２３を圧縮しながら緊締状態のコレットチャック２０を右動して巻き取り軸３０に張力を付与し得るようになっている。
【００２６】
コレットチャック２０の外筒２１の先端には、巻き取り軸３０のコレット爪２４へ進入を誘導するテーパ孔２８を持つガイド筒２９が固着される。
【００２７】
図５に示すように、機台８及び移動台１２には、第１及び第２スピンドル１８₁，１８₂を駆動する巻き取り軸駆動手段３１が設けられる。この巻き取り軸駆動手段３１は、機台８上に設置される電動モータ３２と、この電動モータ３２の出力軸３２ａに連結され、左右の支持壁１０₁，１０₂を貫通して第１及び第２スピンドル１８₁，１８₂と平行に延びる駆動軸３３と、左方の支持壁１０₁の外側で駆動軸３３及び第１スピンドル１８₁間を連結する第１巻掛伝動装置３４₁と、右方の支持壁１０₂の外側で駆動軸３３及び第２スピンドル１８₂間を連結する第２巻掛伝動装置３４₂から構成される。第１巻掛伝動装置３４₁は、駆動軸３３に固着した歯付き駆動プーリ３５₁と、第１スピンドル１８₁に固着した歯付き被動プーリ３６₁と、これらプーリ３５₁，３６₁に巻掛けたコグベルト３７₁とからなる。また第２巻掛伝動装置３４₂は、駆動軸３３に摺動自在にキー結合する歯付き駆動プーリ３５₂と、第２スピンドル１８₂に固着した歯付き被動プーリ３６₂と、これらプーリ３５₂，３６₂に巻掛けたコグベルト３７₂とからなっており、駆動プーリ３５₁と被動プーリ３６₁、駆動プーリ３５₂と被動プーリ３６₂の各ギヤ比は同一に設定されている。したがって、電動モータ３２により駆動軸３３を回転すれば、第１及び第２巻掛伝動装置３４₁，３４₂を介して第１及び第２スピンドル１８₁，１８₂を同期して駆動することができる。
【００２８】
駆動軸３３の一端部は、機台８に固着された軸受台５０₁に支承され、その他端部は、移動台１２に固着された軸受台５０₂に第２巻掛伝動装置３４₂の駆動プーリ３５₂のボス３５₂ａを介して支承される。
【００２９】
移動台１２には、巻き取り軸３０の軸線に沿って相対向する左右一対のワーク押さえ部材３８，３８が開口部１２ａを跨ぐようにして固着される。これらワーク押さえ部材３８，３８の間隔は、これらが巻き取り軸３０により巻き取られる金属平板２及び金属波板３の両側端を押さえ得るように設定される。両ワーク押さえ部材３８，３８は、移動台１２が払出し位置Ｂまで移動したとき、成形されたハニカム筒体４を巻き取り軸３０から払出すようになっており（図７参照）、その際、巻き取り軸３０上を摺動してその右端部を支承する軸受部材３９が移動台１２に固着される。
【００３０】
機台８の下部には、移動台１２がワーク押さえ部材３８，３８と共に払出し位置Ｂに移動したとき、巻き取り軸３０から払出されて機台８の開口部１５及び移動台１２の開口部１２ａを落下してくるハニカム筒体４を収容する容器４０が設置される。
【００３１】
図６及び図９に示すように、巻き取り軸３０の上方には、該軸３０に金属平板２を供給する金属平板供給装置４２が配設され、それは左右の支持壁１０₁，１０₂により支持される。この金属平板供給装置４２は、電動モータ４３により駆動される駆動ローラ４４と、それと協働して金属平板２を挟む従動ローラ４５とを備え、電動モータ４３を作動することにより、金属平板２を巻き取り軸３０へ供給することができる。
【００３２】
また巻き取り軸３０の下方には、該軸３０に金属波板３を機台８の開口部１５を通して供給する金属波板送り装置４６が配設され、それは左右の前記小支持壁１１₁，１１₂により支持される。この金属波板送り装置４６も、電動モータ４８により駆動される駆動ローラ４９と、それと協働して金属平板２を挟む従動ローラ４９とを備え、電動モータ４７を作動することにより、金属波板３を巻き取り軸３０へ供給することができる。
【００３３】
図９及び図１０に示すように、巻き取り軸３０の軸線を含む鉛直面を境として、巻き取り軸３０の両側に第１及び第２支持板５１₁，５１₂が逆ハ字状をなして配設される。これら支持板５１₁，５１₂は、何れも左右の支持壁１０₁，１０₂間に横架された二本の取付け軸５２，５２に固着される。第１及び第２支持板５１₁，５１₂上には、第１及び第２移動板５３₁，５３₂がそれぞれ巻き取り軸３０に対する進退方向に摺動自在に搭載される。
【００３４】
その第１移動板５３₁には、巻き取り軸３０に巻き取られる金属波板３外周面の幅方向中央部を押圧し得る幅狭の第１押圧ローラ５４₁と、金属波板３外周面を全幅にわたり押圧し得る第１補助押圧ローラ５５₁と、金属波板３の谷部と金属平板２との接触部を溶接する第１レーザ溶接手段５６₁とが設けられ、そして第１移動板５３₁を進退作動させる第１付勢用エアシリンダ５７₁（第１付勢手段）が第１支持板５１₁に取付けられる。
【００３５】
図１０及び図１１に示すように、第１押圧ローラ５４₁は、巻き取り軸３０に巻き取られる金属波板３の谷部及び山部に噛合する歯形を外周に有していて、第１移動板５３₁から起立するブラケット５９₁に軸支される。第１補助押圧ローラ５５₁も、そのブラケット５９₁に軸支されるが、第１押圧ローラ５４₁の金属波板３巻き取り方向直前で、その金属波板３の外周面を押圧するように配置される。
【００３６】
第１レーザ溶接手段５６₁は、第１移動板５３₁の固設されたホルダ６０₁に保持される複数本の溶接トーチ６１₁，６１₁…（図示例では４本）を備えていて、これら溶接トーチ６１₁，６１₁…の照射レーザが第１押圧ローラ５４₁両側の所定の複数箇所（図示例では４箇所）で金属波板３の谷部と金属平板２との接触部に焦点を結び、スポット溶接するようになっている。これら溶接トーチ６１₁，６１₁…は、そのレーザ照射方向線Ｌ₁が巻き取り軸３０及び第１押圧ローラ５４₁の両軸線を含む平面上を通るように配置される。
【００３７】
また、第２移動板５３₂には、巻き取り軸３０に巻き取られる金属平板２外周面の幅方向中央部を押圧し得る幅狭の第２押圧ローラ５４₂と、金属平板２外周面を全幅にわたり押圧し得る第２補助押圧ローラ５５₂と、金属波板３の山部と金属平板２との接触部を溶接する第２レーザ溶接手段５６₂とが設けられ、そして第２移動板５３₂を進退作動させる第２付勢用エアシリンダ５７₂（第２付勢手段）が第２支持板５１₂に取付けられる。
【００３８】
第２押圧ローラ５４₂は、第２移動板５３₂から起立するブラケット５９₂に軸支される。第２補助押圧ローラ５５₂も、そのブラケット５９₂に軸支されるが、第２押圧ローラ５４₂の金属平板２巻き取り方向直前で、その金属平板２の外周面を押圧するように配置される。
【００３９】
第２レーザ溶接手段５６₂は、第２移動板５３₂の固設されたホルダ６０₂に保持される複数本の溶接トーチ６０₂，６０₂…（図示例では４本）を備えていて、これら溶接トーチ６０₂，６０₂…の照射レーザが第２押圧ローラ５４₂の両側の所定箇所で金属波板３の山部と金属平板２との接触部に焦点を結び、スポット溶接するようになっている。これら溶接トーチ６０₂，６０₂…は、そのレーザ照射方向線Ｌ₂が巻き取り軸３０及び第２押圧ローラ５４₂の両軸線を含む平面上を通るように配置される。
【００４０】
而して、第１レーザ溶接手段５６₁及び第２レーザ溶接手段５６₂は、それぞれの上記レーザ照射方向線Ｌ₁，Ｌ₂が巻き取り軸３０を中心にして上方へ向かって相互に開くＶ字状をなすように配置される。上記レーザ照射方向線Ｌ₁，Ｌ₂の夾角αは、図示例の場合、略１２０°に設定される。
【００４１】
図１０において、第１移動板５３₁には、歯車型第１押圧ローラ５４₁の山部及び谷部を検知する位置センサ６３が付設される。このセンサ６３は、第１押圧ローラ５４₁の山部が巻き取り軸３０に巻き取られた金属波板３の谷部に係合したとき、第１押圧ローラ５４₁の他の谷部又は山部を検知して溶接制御ユニット６４に溶接信号を出力する。溶接制御ユニット６４は、位置センサ６３からの溶接信号を受けと即座に第１レーザ溶接手段５６₁を作動し、またその溶接信号を受けた時から巻き取り軸３０が下記所定角度βだけ回転したとき第２レーザ溶接手段５６₂を作動するようになっている。
【００４２】
β＝α＋θ ・・・(1)
α：レーザ照射方向線Ｌ₁，Ｌ₂の夾角
θ：位置センサ６３が出力する相隣る２つの信号間隔に対応する巻き取り軸３０の回転角の２分の１の角度
尚、巻き取り軸３０の回転角は、前記第１軸受台１７₁に設けられるエンコーダ６５により検知される。
【００４３】
次に、この実施例に作用について説明する。
【００４４】
先ず、移動用エアシリンダ１４の作動により移動台１２を巻き取り位置Ａに保持する。このとき、巻き取り軸３０の右端部はコレット爪２４内に進入するので、牽引用エアシリンダ２６のピストン２７を右動すれば、作動杆２５を牽引してコレット爪２４を閉じ状態にし、巻き取り軸３０の右端部を保持する。さらにピストン２７を右動すると、コレットチャック２０がばね２３を圧縮しながら右方へ牽引され、巻き取り軸３０に一定の張力を付与する。その結果、細い巻き取り軸３０でも、回転中は大なる撓み剛性を有することになるから、側方からの荷重に対して大なる抗力を発揮して芯振れを生じ難くなり、後述の金属平板２及び金属波板３の巻き取りを的確に行い得るようになる。
【００４５】
こうしてから、最初に金属平板供給装置４２により金属平板２を巻き取り軸３０へ送って、図１２（１）に示すように、該軸３０のスリット３０ａに挿入する。その際、金属平板２の始端をスリット３０ａ外に所定長さ、例えば巻き取り軸３０の略半周に相当する長さ突出させる。次いで、巻き取り軸駆動手段３１の電動モータ３２を作動して、第１及び第２スピンドル１８₁，１８₂を同期回転させて巻き取り軸３０全体を略１．５回転ないし数回転させ、前記スリット３０ａ外への突出部分２ａと共に金属平板２を巻き取る（図１２（３）参照）。
【００４６】
次いで、図１０に示すように、第１及び第２付勢用エアシリンダ５７₁，５７₂を所定の空気圧をもって伸長作動して第１及び第２移動板５３₁，５３₂を前進させ、第１及び第２押圧ローラ５４₁，５４₂を金属平板２の外周面にそれぞれ圧接させ、先ず第２レーザ溶接手段５６₂を手動操作して、溶接トーチ６１₂，６１₂…の照射レーザにより、金属平板２相互の接触部を適当間隔置きにスポット溶接していく。その溶接点を符号ｐ₁で示す。
【００４７】
巻き取り軸３０の略１．５回転ないし数回転の後は、今度は金属波板供給装置４６により金属波板３を巻き取り軸３０へ送って、その始端を、金属平板２の巻き取り軸３０に巻きつけられた部分の外周面にスポット溶接する（図１２（４）の溶接点ｐ₂参照）。この溶接は、第１レーザ溶接手段５６₁の手動操作による溶接トーチ６１₁，６１₁…の照射レーザにより行う。こうすると、これからの巻き取り軸３０の回転の進行に伴い、金属波板３の始端を、金属平板２の、巻き取り軸３０に巻き取られた部分と、これから巻き取られる部分との間に、ずれなく確実に挟み込ませることができる。
【００４８】
巻き取り軸３０の回転に伴い、金属波板２の最初の谷部に第１押圧ローラ５４₁の山部が係合した段階から第１及び第２レーザ溶接手段５６₁，５６₂を自動制御すべく、溶接制御ユニット６４を作動状態にする。
【００４９】
而して、位置センサ６３は、金属波板３の谷部が金属平板２に接触する度に、その状態を第１押圧ローラ５４₁を介して検知し、溶接信号を溶接制御ユニット６４に出力するので、該ユニット６４は、第１レーザ溶接手段５６₁を作動して、溶接トーチ６１₁，６１₁…の照射レーザにより金属波板３の谷部と金属平板２との接触部をｐ₂で示すようにスポット溶接する。
【００５０】
また、位置センサ６３が溶接信号を出力した点から巻き取り軸３０が前記角度β回転すると、前記(1) 式により、金属波板３の山部が金属平板２との接触点に到達することになる。このとき、溶接制御ユニット６４は、これをエンコーダ６５からの信号から演算して第２レーザ溶接手段５６₂を作動し、その溶接トーチ６１₂，６１₂…の照射レーザにより、金属波板３の山部と金属平板２との接触部を図１２（６）にｐ₃で示すようにスポット溶接する。
【００５１】
しかも、この場合、前述のように、金属波板３の山に頂部ａ及び谷の底部ｂは平坦に形成されているから、その頂部ａ及び底部ｂは金属平板２と比較的広い面積で接触することになり、各溶接トーチ６１₁，６１₁…；６１₂，６１₂…からのレーザ照射点に多少のずれがあっても、その頂部ａ及び底部ｂと金属平板２との溶接を確実に行うことができる。
【００５２】
こうして、金属波板３の谷部が金属平板２に接触することを検知する一個の位置センサ６３と、巻き取り軸３０の回転角を検知する一個もエンコーダ６５とにより、第１及び第２レーザ溶接手段５６₁，５６₂の作動を制御して、金属波板３の谷部と金属平板２との接触部、並びに金属波板３の山部と金属平板２との接触部を簡単、的確に溶接することができる。
【００５３】
しかも、第１及び第２移動板５３₁，５３₂に設けられた第１及び第２補助押圧ローラ５４₁，５４₂は、第１及び第２押圧ローラ５４₁，５４₂の、巻き取り軸３０の回転方向Ｒ直前、即ち溶接点の直前で金属波板３及び金属平板２の各外周面を、その全幅にわたり押圧しているから、各溶接点では、金属波板３及び金属平板の良好な密着状態を確保して、それらのレーザ溶接を確実なものとすることができる。
【００５４】
また、移動台１２上の左右一対のワーク押さえ部材３８，３８は、巻き取り軸３０に巻き取られた金属波板３及び金属平板２の両側端を常に押さえるので、それらの側端を面一状に奇麗に揃えることができ、成形後の仕上げ加工を省くことができる。それと共に、巻き取り軸３０の回転を継続すれば、金属平板２及び金属波板３を重ね合わせて螺旋状に密に巻き取っていくことができる。
【００５５】
巻き取り軸３０による金属波板３及び金属平板２の巻き取りが進行するに伴い、それぞれの直径が増大していくが、第１及び第２押圧ローラ５４₁，５４₂は、金属波板３及び金属平板２の外周面に一定の圧力をもって圧接した状態を保ちながら、第１及び第２移動板５３₁，５３₂と共に後退し、第１及び第２付勢用エアシリンダ５７₁，５７₂を収縮させていく。上記第１及び第２移動板５３₁，５３₂には第１及び第２レーザ溶接手段５６₁，５６₂が設けられているから、金属平板２の直径の増大によるも、第１レーザ溶接手段５６₁の溶接トーチ６１₁，６１₁…からの照射レーザの焦点を金属波板３の谷部と金属平板２との規定の接触部に、また第２レーザ溶接手段５６₂の溶接トーチ６１₂，６１₂…からの照射レーザの焦点を金属波板３の山部と金属平板２との規定の接触部にそれぞれ保持し続けることができ、したがって、それら接触部の溶接を的確に行うことができる。
【００５６】
尚、金属平板２及び金属波板３の巻き取り中は、金属平板供給装置４２及び金属波板供給装置４６の各電動モータ４３，４７の作動を停止して、それらを自由にすることにより、金属平板及び金属波板供給装置４２，４７が巻き取り軸３０の巻き取り作業の妨げにならないようにする。
【００５７】
また、移動台１２上の左右一対のワーク押さえ部材３８，３８は、巻き取り軸３０に巻き取られた金属波板３及び金属平板２の両側端を常に押さえるので、それらの側端を面一状に奇麗に揃えることができ、成形後の仕上げ加工を省くことができる。
【００５８】
金属平板２は金属波板３よりも長くなっており、したがって、巻き終わり時、その終端は金属平板２自身の外周面に密着して溶接される。また金属波板３は、前述のように、終端に近づくと波の振幅が漸減するので、金属波板３の終端による、金属平板２の最外周部の局部的な膨らみを極力抑えることができる。
【００５９】
こうして巻き取り軸３０上で円筒に近似したハニカム筒体４が成形される。その後は、第１及び第２付勢用エアシリンダ５７₁，５７₂を収縮作動して、第１及び第２押圧ローラ５４₁，５４₂をハニカム筒体４から退去させ、また牽引用エアシリンダ２６のピストン２７を左動してコレットチャック２０を開き状態にし、巻き取り軸３０の右端部を自由にする。それから移動用エアシリンダ１４の作動により、図７に示すように移動台１２を払出し位置Ｂまで移動すれば、この移動台１２に設けられた左方のワーク押さえ部材３８がハニカム筒体４を巻き取り軸３０に沿って右方へ滑らせ、その右端部から払出す。巻き取り軸３０から払出されたハニカム筒体４は、自重により一対のワーク押さえ部材３８，３８間から落下して、容器４０に収容される。このように、成形後のハニカム筒体４は、巻き取り位置Ａから離隔して特別に設けた払出し位置Ｂで巻き取り軸３０から払出されるので、巻き取り位置Ａの周囲に配設される、金属波板供給装置４６、金属平板供給装置４２、第１、第２レーザ溶接手段５６₁，５６₂等の各種機器に干渉されることなく、ハニカム筒体４の払出しが可能となる。
【００６０】
ところで、巻き取り軸３０のスリット３０ａは、金属平板２の始端部のみを受け入れるだけの極めて幅狭のもので足りるから、巻き取り軸３０の強度を確保しゝ、その細径化が可能となり、その結果、巻き取り軸３０を抜き取った跡のハニカム筒体４中心部の空間を狭小にして、ハニカム筒体４の触媒担持面積の増大を図ることができる。
【００６１】
また金属平板２の始端を巻き取り軸３０のスリット３０ａに挿入したとき、その始端を該スリット３０ａ外へ所定長さ突出させ、この突出部分２ａを、金属平板２の他の部分と共に巻き取り軸３０により巻き取るようにしたので、金属平板２の、巻き取り軸３０のスリット３０ａに係合した直線部分２ｂ（図１参照）は、巻き取り軸３０に巻き取られた円筒部分２ｃに両端支持されることになり、その直線部分２ｂの支持剛性が高く、高速の排気流に曝させるも、その直線部分の振動を防ぐことができる。
【００６２】
第１及び第２レーザ溶接手段５６₁，５６₂は、各溶接トーチ６１₁，６１₁…；６１₂，６１₂…のレーザ照射方向線Ｌ₁，Ｌ₂が上方に向って相互にＶ字状に開くように配設されるので、各溶接トーチ６１₁，６１₁…；６１₂，６１₂…のレーザは、常に作業者の眼下に照射されることになり、作業者の眼を照射レーザから保護することができる。また、巻き取り軸３０に被溶接物が存在しない場合、誤って一方又は両方の溶接トーチ６１₁，６１₁…；６１₂，６１₂…からレーザが照射されても、各レーザが相手の溶接トーチに照射されることはなく、それらの損傷を回避することができる。
【００６３】
次に、図１３及び図１４により本発明の第２実施例について説明する。
【００６４】
図１３は巻き取り前の金属平板及び金属波板の側面図、図１４は金属平板及び金属波板の巻き取り作用説明図である。図１３に示すように、ハニカム筒体４の製造に際し、用意するハニカム筒体４一個分の金属平板２及び金属波板３において、金属波板３には、その巻き取り方向に沿う始端側に一定長さの平板部３ａを形成する。その他の形状は、図３に示した前記実施例と同様である。
【００６５】
ハニカム筒体４の製造には、前記製造装置が使用される。その巻き取り軸３０による巻き取りに当たっては、先ず前記実施例の場合と同様に、図１４（１）に示すように、金属平板２の始端を巻き取り軸３０のスリット３０ａに挿入して、それをスリット３０ａ外に所定長さ突出させる。次いで、巻き取り軸３０を略１．５回転ないし数回転させ、前記スリット３０ａ外への突出部分２ａと共に金属平板２を巻き取る。
【００６６】
次いで、図１０に示すように、第１及び第２付勢用エアシリンダ５７₁，５７₂を所定の空気圧をもって伸長作動して第１及び第２移動板５３₁，５３₂を前進させ、第１及び第２押圧ローラ５４₁，５４₂を金属平板２の外周面にそれぞれ圧接させ、先ず第２レーザ溶接手段５６₂を手動操作して、溶接トーチ６１₂，６１₂…の照射レーザにより、金属平板２相互の接触部を適当間隔置きにスポット溶接していく。その溶接点を図１４（２）に符号ｐ₁で示す。
【００６７】
巻き取り軸３０の略１．５回転ないし数回転の後、今度は金属波板３を巻き取り軸３０へ送って、その始端側の平板部３ａを図１４（３）に示すように、金属平板２の巻き取り軸３０に巻きつけられた部分と、これから巻き取られる部分との間に差し込む。
【００６８】
そして、巻き取り軸３０の引き続く回転により、平板部３ａを金属平板２の巻き取り軸３０に巻きつけられた部分と、これから巻き取られる部分との間に充分に挟み込ませてから、図１４（４）にｐ₂で示すように、第２レーザ溶接手段５６₂の手動操作による溶接トーチ６１₂，６１₂…の照射レーザにより、平板部３ａとその外側の金属平板２との接触部をスポット溶接する。この場合、金属波板３の平板部３ａと金属平板２との溶接許容範囲は、これを充分に広く設定し得るから、その溶接を容易にに行うことができる。
【００６９】
次いで、巻き取り軸３０の回転に伴い、金属波板２の最初の谷部に第１押圧ローラ５４₁の山部が係合した段階から第１及び第２レーザ溶接手段５６₁，５６₂を自動制御すべく、溶接制御ユニット６４を作動状態にする。したがって、金属波板３の各谷部は金属平板３の外周に接触したとき、ｐ₃で示すように、第１レーザ溶接手段５６₁の自動操作による溶接トーチ６１₂，６１₂…の照射レーザによりスポット溶接され、また金属波板３の各山部は金属平板３の内周面外周に接触したとき、ｐ₄で示すように、第２レーザ溶接手段５６₂の自動操作による溶接トーチ６１₂，６１₂…の照射レーザによりスポット溶接される。
【００７０】
本発明は、上記実施例に限定されるものではなく、その要旨を逸脱しない範囲で種々の設計変更が可能である。例えば、第１、第２付勢用エアシリンダ５７₁，５７₂の空気圧に代えて、ばね力をもって第１、第２移動板５３₁，５３₂を巻き取り軸３０側へ押圧するようにしてもよい。また第１及び第２レーザ溶接手段５６₁，５６₂を全工程において自動化し得ることは言うまでもない。
【００７１】
【発明の効果】
以上のように本発明の第１の特徴によれば、金属平板及び金属波板を重ね合わせて巻き取り軸により螺旋状に巻き取って、ハニカム筒体を成形する、ハニカム筒体の製造装置において、機台に固定される第１軸受台に、巻き取り軸の一端を結合する第１スピンドルを支承する一方、機台に移動台を、これが巻き取り軸の軸方向に沿って巻き取り位置及び払出し位置間を移動し得るように設け、この移動台に固定される第２軸受台に、巻き取り軸の他端を解放可能に保持し得る第２スピンドルを支承し、また移動台には、巻き取り軸に巻き取られた金属平板及び金属波板の両側端を押さえる一対のワーク押さえ部材を設け、第１及び第２スピンドルにこれらを同期駆動し得る巻き取り軸駆動手段を連結し、移動台の巻き取り位置では巻き取り軸の他端の第２スピンドルによる保持及び解放が可能であり、移動台の払出し位置では巻き取り軸から成形されたハニカム筒体がワーク押さえ部材により払出されるようにしたので、巻き取り軸上でハニカム筒体を成形した後は、巻き取り軸の他端を自由にして、移動台を払出し位置まで移動することにより、巻き取り位置から離隔した払出し位置にハニカム筒体を巻き取り軸の他端から払出すことができ、巻き取り位置の周囲に配設される各種機器との干渉を回避することができる。
【００７２】
また本発明の第２特徴によれば、巻き取り軸による金属平板及び金属波板の巻き取り時、金属波板の谷部と金属平板との接触部にレーザを照射して溶接する第１レーザ溶接手段と、金属波板の山部と金属平板との接触部にレーザを照射して溶接する第２レーザ溶接手段とを、それらの照射レーザ方向線が巻き取り軸を中心にして半径方向外方へ相互にＶ字状に開くよう、機台に配設したので、巻き取り軸に被溶接物が存在しない場合、誤って第１又は第２レーザ溶接手段を作動しても、その一方からの照射レーザが他方に当たることはなく、その損傷を防ぐことができる。
【００７３】
さらにまた本発明の第３の特徴によれば、巻き取り軸、第１及び第２スピンドルを水平に配置し、第１レーザ溶接手段及び第２レーザ溶接手段を、それらの照射レーザ方向線が巻き取り軸を中心にして上方へ向かって相互にＶ字状に開くよう、機台に配設したので、各レーザ溶接手段からは、レーザが常に作業者の眼下に照射されることになり、作業者の眼を照射レーザから保護することができる。
【００７４】
さらにまた本発明の第４の特徴によれば、第１レーザ溶接手段を支持する第１移動板及び第２レーザ溶接手段を支持する第２移動板を巻き取り軸に対して進退可能に機台に取付け、その第１移動板に、巻き取り軸に巻き取られる金属波板の外周面を押圧し得る第１押圧ローラを設けると共に、この第１押圧ローラを該金属波板の外周面に押圧すべく第１移動板を前進方向へ付勢する第１付勢手段を第１移動板に連結し、また第２移動板に、巻き取り軸に巻き取られる金属平板の外周面を押圧し得る第２押圧ローラ５４₂を設けると共に、この第２押圧ローラを該金属平板の外周面に押圧すべく第２移動板を前進方向へ付勢する第２付勢手段を第２移動板に連結したので、巻き取り軸による金属波板及び金属平板の巻き取りが進行するに伴い、それぞれの直径が増大しても、第１レーザ溶接手段からの照射レーザの焦点を金属波板の谷部と金属平板との規定の接触部に、また第２レーザ溶接手段からの照射レーザの焦点を金属波板の山部と金属平板との規定の接触部にそれぞれ保持し続けることができ、常に安定したレーザ溶接が可能となる。
【００７５】
さらにまた本発明の第５の特徴によれば、第１移動板に、金属波板の谷部と金属平板との溶接部直前で金属波板の外周面を押圧し得る第１補助押圧ローラを設け、また第２移動板に、金属波板の山部と金属平板との溶接部直前で金属平板の外周面を押圧し得る第２補助押圧ローラを設けたので、各溶接部では、金属波板及び金属平板の良好な密着状態を確保して、それらのレーザ溶接を確実なものとすることができる。
【図面の簡単な説明】
【図１】金属製触媒担体の正面図。
【図２】図１の２−２線断面図。
【図３】巻き取り前の金属平板及び金属波板の側面図。
【図４】ハニカム体の製造装置の平面図。
【図５】図４の要部の平面図。
【図６】図４の６−６線断面図。
【図７】図６に対応した作用説明図。
【図８】図６の８−８線拡大断面図。
【図９】図４の９−９線断面図。
【図１０】図９の要部拡大図。
【図１１】図１０の１１矢視図。
【図１２】金属平板及び金属波板の巻き取り作用説明図。
【図１３】本発明の別の実施例に係る巻き取り前の金属平板及び金属波板の側面図。
【図１４】図１３の金属平板及び金属波板の巻き取り作用説明図。
【符号の説明】
Ａ・・・・・巻き取り位置
Ｂ・・・・・払出し位置
Ｌ₁・・・・第１レーザ溶接手段のレーザ照射方向線
Ｌ₂・・・・第２レーザ溶接手段のレーザ照射方向線
２・・・・・金属平板
３・・・・・金属波板
４・・・・・ハニカム筒体
８・・・・・機台
１２・・・・移動台
１７₁・・・第１軸受台
１７₂・・・第２軸受台
１８₁・・・第１スピンドル
１８₂・・・第２スピンドル
２０・・・・コレットチャック
２６・・・・チャック用エアシリンダ
３０・・・・巻き取り軸
３１・・・・巻き取り軸駆動手段
３８・・・・ワーク押さえ部材
５３₁・・・第１移動板
５３₂・・・第２移動板
５４₁・・・第１押圧ローラ
５４₂・・・第２押圧ローラ
５５₁・・・第１補助押圧ローラ
５５₂・・・第２補助押圧ローラ
５６₁・・・第１レーザ溶接手段
５６₂・・・第２レーザ溶接手段
５７₁・・・第１付勢手段（第１付勢用エアシリンダ）
５７₂・・・第２付勢手段（第２付勢用エアシリンダ）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for manufacturing a honeycomb cylinder mainly used for a metal catalyst carrier, and more particularly to an apparatus for forming a honeycomb cylinder by superimposing a metal plate and a metal corrugated sheet and winding them spirally with a winding shaft. .
[0002]
[Prior art]
Such an apparatus for manufacturing a honeycomb tubular body is already known as disclosed in, for example, Japanese Patent Application Laid-Open No. 9-150217.
[0003]
[Problems to be solved by the invention]
In the honeycomb cylinder manufacturing apparatus disclosed in the above publication, the metal flat plate and the metal corrugated sheet are overlapped and wound spirally by a winding shaft to form a honeycomb cylindrical body, and then the winding shaft is axially moved. It moves and is pulled out from the honeycomb cylinder, and the honeycomb cylinder is taken out. That is, the forming position of the honeycomb tubular body is made coincident with the taking-out position after the forming.
[0004]
However, since a feeding device and a welding device for a metal flat plate and a corrugated metal plate are generally disposed around the honeycomb cylinder forming position, the honeycomb after forming without being interfered with these devices. It is very difficult to take out the cylinder.
[0005]
The present invention has been made in view of such circumstances, and the honeycomb honeycomb body can be easily taken out without being interfered with various devices around the forming position of the honeycomb tubular body. It aims at providing the manufacturing apparatus of a cylinder.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a machine for manufacturing a honeycomb cylinder, in which a metal flat plate and a metal corrugated plate are overlapped and spirally wound around a winding shaft to form a honeycomb cylindrical body. A first spindle that joins one end of the take-up shaft to the first bearing stand that is fixed to the shaft, while a moving stand is mounted on the machine base, between the take-up position and the payout position along the axial direction of the take-up shaft. A second spindle that can releasably hold the other end of the take-up shaft is supported on a second bearing stand that is fixed to the move stand, and the take-up shaft is provided on the move stand. A pair of work pressing members for pressing both sides of the metal flat plate and the corrugated metal plate wound on the first and second spindles are connected to a winding shaft driving means capable of synchronously driving them, and the movable table is wound. In the take-up position, other than the take-up shaft The first feature is that the C-cam cylinder formed from the take-up shaft is paid out by the work pressing member at the paying position of the movable table. .
[0007]
Thus, after the honeycomb cylindrical body is formed on the winding shaft, if the other end of the winding shaft is free and the movable table is moved to the discharging position, the workpiece pressing member is separated from the winding position. At the position, the honeycomb cylinder is discharged from the other end of the winding shaft. Therefore, according to the first feature, the honeycomb tubular body can be paid out without being interfered with various devices arranged around the winding position.
[0008]
According to the present invention, in addition to the above features, the first laser for welding by irradiating a laser to a contact portion between a trough of the metal corrugated plate and the metal flat plate when winding the metal flat plate and the metal corrugated plate by the winding shaft. Welding means and second laser welding means for irradiating and welding the contact portion between the peak portion of the corrugated metal plate and the metal flat plate, and the direction of the irradiation laser direction is centered on the take-up axis. The second feature is that they are arranged on the machine base so as to open to each other in a V shape.
[0009]
According to this second feature, when there is no work piece on the winding shaft, even if the first or second laser welding means is operated by mistake, the irradiation laser from one of them does not hit the other, The damage can be avoided.
[0010]
Furthermore, in addition to the second feature of the present invention, the winding shaft, the first and second spindles are horizontally disposed, and the first laser welding means and the second laser welding means are arranged so that their irradiation laser direction lines are A third feature is that it is arranged on the machine base so as to open in a V shape toward each other upward about the winding shaft.
[0011]
According to the third feature, each laser welding means always irradiates the laser under the operator's eyes, and the operator's eyes can be protected from the irradiation laser.
[0012]
Furthermore, in addition to the second or third feature, the present invention advances and retreats the first moving plate that supports the first laser welding means and the second moving plate that supports the second laser welding means with respect to the winding shaft. The first corrugated plate is provided with a first pressing roller capable of pressing the outer peripheral surface of the metal corrugated plate wound around the winding shaft, and the first pressing roller is attached to the corrugated metal plate. The first urging means for urging the first moving plate in the forward direction to be pressed against the outer peripheral surface is connected to the first moving plate, and the outer peripheral surface of the metal flat plate wound around the winding shaft by the second moving plate. The second pressing roller 54 that can press ₂ And a second urging means for urging the second moving plate in the forward direction to press the second pressing roller against the outer peripheral surface of the metal flat plate is connected to the second moving plate. And
[0013]
Thus, as the winding of the metal corrugated plate and the metal flat plate by the winding shaft progresses, the respective diameters increase, so that the first and second pressing rollers are placed on the outer peripheral surfaces of the metal corrugated plate and the metal flat plate. The first and second moving plates are moved backward together with the first and second laser welding means while maintaining the pressure contact state with a constant pressure. Therefore, according to the fourth feature, even though the diameter of the metal flat plate is increased, the focal point of the irradiation laser from the first laser welding means is set at a predetermined contact portion between the trough portion of the metal corrugated plate and the metal flat plate. The focal point of the irradiation laser from the second laser welding means can be kept at the specified contact portions between the crests of the metal corrugated plate and the metal flat plate, so that stable laser welding is always possible.
[0014]
Furthermore, in addition to the fourth feature, the present invention provides a first auxiliary pressing roller capable of pressing the outer peripheral surface of the metal corrugated plate immediately before the welded portion between the trough of the metal corrugated plate and the metal flat plate on the first moving plate. And a second auxiliary pressing roller capable of pressing the outer peripheral surface of the metal flat plate immediately before the welded portion of the metal corrugated plate and the metal flat plate is provided on the second moving plate. .
[0015]
According to the fifth feature, in each welded portion, it is possible to secure a good contact state between the metal corrugated plate and the metal flat plate and to ensure their laser welding.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.
[0017]
1 to 12 show a first embodiment of the present invention. FIG. 1 is a front view of a metal catalyst carrier, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is a metal before winding. 4 is a plan view of the honeycomb body manufacturing apparatus, FIG. 5 is a plan view of the main part of FIG. 4, FIG. 6 is a sectional view taken along line 6-6 of FIG. 4, and FIG. FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 6, FIG. 9 is a sectional view taken along line 9-9 in FIG. 4, FIG. 10 is an enlarged view of the main part of FIG. 10 is a view taken in the direction of arrow 11 and FIG. 12 is an explanatory view of the winding action of the metal plate and the metal corrugated plate.
[0018]
First, in FIGS. 1 and 2, a metal catalyst carrier 1 is a honeycomb cylinder formed by superposing a metal flat plate 2 and a metal corrugated plate 3 and winding them in a spiral shape and welding the contact portions of both plates 2 and 3. It comprises a body 4 and a cylindrical housing 5 that is fitted and welded to the outer peripheral surface to accommodate and hold the honeycomb tubular body 4.
[0019]
In manufacturing the honeycomb tubular body 4, as shown in FIG. 3, a metal flat plate 2 and a corrugated sheet 3 having a predetermined length corresponding to one honeycomb tubular body 4 are prepared. These materials are, for example, stainless steel plates. The length of the metal flat plate 2 is set longer than that of the metal corrugated plate 3. The starting end of the metal corrugated plate 3 along the winding direction starts from a trough, and is formed such that the wave amplitude h gradually decreases on the end side. Furthermore, the crest a of the metal corrugated plate 3 and the bottom b of the trough are formed flat.
[0020]
Now, an apparatus for manufacturing the honeycomb tubular body 4 will be described with reference to FIGS.
[0021]
4 to 8, a pair of rails 9, 9 extending in the long side direction are laid on a rectangular machine base 8 supported horizontally by a plurality of support columns 7, 7,. A pair of left and right support walls 10 facing each other so as to be orthogonal to 9 ₁ , 10 ₂ Is established. The support wall 10 is also provided on the lower surface of the machine base 8. ₁ , 10 ₂ A pair of left and right small support walls 11 corresponding to ₁ , 11 ₂ Is fixed.
[0022]
On the rails 9, 9, a movable table 12 is slidably mounted through a notch-shaped entrance / exit 13 provided on the right support wall. A piston rod 14 a of a moving air cylinder 14 attached to the lower surface of the machine base 8 is connected to the moving table 12 via an arm member 16 that penetrates a long hole-like opening 15 at the center of the machine base 8. . Thus, the movable base 12 is moved to the left support wall 10 by the contraction and extension of the air cylinder 14. ₁ The winding position A close to the ₁ It is possible to move to a payout position B that is separated from. The moving table 12 has an opening 12 a located immediately above the opening 8 a of the machine base 8.
[0023]
First bearing stand 17 fixed on the machine base 8 ₁ Is the left support wall 10 ₁ A first spindle 18 disposed adjacent to the outer side and parallel to the rails 9, 9 ₁ Is supported. This first spindle 18 ₁ Is the left support wall 10 ₁ A chuck 19 is provided at an end portion that penetrates through the shaft, whereby the left end portion of the small-diameter winding shaft 30 is held firmly. The take-up shaft 30 forms the honeycomb tubular body 4 by taking up the metal flat plate 2 and the metal corrugated plate 3, and has a slit 30a starting from the vicinity of the left end portion thereof and opening in the right end surface. The winding start end of the metal flat plate 2 is inserted.
[0024]
On the other hand, the movable support 12 has a right support wall 10. ₂ 1st bearing stand 17 located outside ₂ Is fixed to the first spindle 18. ₁ The second spindle 18 aligned with the same axis ₂ Is supported. This second spindle 18 ₂ One end of the support wall 10 on the right side at the winding position A of the movable table 12 ₂ A collet chuck 20 that can releasably hold the right end of the take-up shaft 30 at the take-up position A of the movable table 12 is provided at the end thereof.
[0025]
As shown in FIG. 8, the outer cylinder 21 of the collet chuck 20 is connected to the second spindle 18 via a plurality of guide shafts 22. ₂ The outer cylinder 21 is attached to the end surface of the first spindle 18 between them. ₁ A spring 23 is inserted to be biased with a certain load to the side. The collet claw 24 in the outer cylinder 21 has a second spindle 18. ₂ An operating shaft 25 slidably penetrating through the center of the second spindle 18 is connected. ₂ Is connected to a piston 27 of a traction air cylinder 26 attached to the cylinder. Thus, the collet claw 24 is in an open state in which the winding shaft 30 is released by the left movement of the piston 27, and is in a closed state in which the winding shaft 30 is held by the right movement. Further, when the piston 27 is moved to the right, the collet chuck 20 in the tightened state can be moved to the right while compressing the spring 23 to apply tension to the take-up shaft 30.
[0026]
A guide cylinder 29 having a tapered hole 28 that guides entry into the collet claw 24 of the winding shaft 30 is fixed to the tip of the outer cylinder 21 of the collet chuck 20.
[0027]
As shown in FIG. 5, the machine base 8 and the movable base 12 include first and second spindles 18. ₁ , 18 ₂ A take-up shaft drive means 31 for driving the is provided. The take-up shaft driving means 31 is connected to an electric motor 32 installed on the machine base 8 and an output shaft 32a of the electric motor 32. ₁ , 10 ₂ Through the first and second spindles 18 ₁ , 18 ₂ Drive shaft 33 extending in parallel with the left support wall 10 ₁ Outside of the drive shaft 33 and the first spindle 18 ₁ 1st winding transmission device 34 which connects between ₁ And the right support wall 10 ₂ Outside of the drive shaft 33 and the second spindle 18 ₂ 2nd winding transmission device 34 which connects between ₂ Consists of First winding transmission 34 ₁ Is a toothed drive pulley 35 fixed to the drive shaft 33. ₁ And the first spindle 18 ₁ Toothed driven pulley 36 secured to ₁ And these pulleys 35 ₁ , 36 ₁ Cog belt 37 wrapped around ₁ It consists of. The second winding transmission device 34 ₂ Is a toothed drive pulley 35 slidably coupled to the drive shaft 33. ₂ And the second spindle 18 ₂ Toothed driven pulley 36 secured to ₂ And these pulleys 35 ₂ , 36 ₂ Cog belt 37 wrapped around ₂ Drive pulley 35 ₁ And driven pulley 36 ₁ , Drive pulley 35 ₂ And driven pulley 36 ₂ The gear ratios are set to be the same. Therefore, if the drive shaft 33 is rotated by the electric motor 32, the first and second winding transmission devices 34 are used. ₁ , 34 ₂ Through the first and second spindles 18 ₁ , 18 ₂ Can be driven synchronously.
[0028]
One end of the drive shaft 33 is a bearing base 50 fixed to the machine base 8. ₁ The other end of the bearing base 50 is fixed to the movable base 12. ₂ 2nd winding transmission 34 ₂ Driving pulley 35 ₂ The boss 35 ₂ It is supported via a.
[0029]
A pair of left and right workpiece pressing members 38, 38 facing each other along the axis of the winding shaft 30 are fixed to the movable table 12 so as to straddle the opening 12 a. The intervals between the workpiece pressing members 38 and 38 are set so that they can press both side ends of the metal flat plate 2 and the metal corrugated plate 3 wound by the winding shaft 30. Both work pressing members 38, 38 are configured to pay out the formed honeycomb tubular body 4 from the take-up shaft 30 when the movable table 12 moves to the payout position B (see FIG. 7). A bearing member 39 that slides on the winding shaft 30 and supports the right end thereof is fixed to the movable table 12.
[0030]
In the lower part of the machine base 8, when the moving table 12 moves to the payout position B together with the work pressing members 38, 38, it is discharged from the take-up shaft 30 and the opening 15 of the machine table 8 and the opening 12 a of the moving table 12. A container 40 for storing the honeycomb tubular body 4 falling is installed.
[0031]
As shown in FIGS. 6 and 9, a metal flat plate supply device 42 for supplying the metal flat plate 2 to the shaft 30 is disposed above the winding shaft 30. ₁ , 10 ₂ Is supported by The metal flat plate supply device 42 includes a drive roller 44 driven by an electric motor 43 and a driven roller 45 that sandwiches the metal flat plate 2 in cooperation with the drive roller 44. By operating the electric motor 43, the metal flat plate 2 is moved. It can be supplied to the winding shaft 30.
[0032]
Also, below the winding shaft 30, a metal corrugated sheet feeding device 46 for supplying the corrugated sheet 3 to the shaft 30 through the opening 15 of the machine base 8 is disposed. ₁ , 11 ₂ Is supported by This metal corrugated sheet feeding device 46 also includes a driving roller 49 driven by an electric motor 48 and a driven roller 49 sandwiching the metal flat plate 2 in cooperation therewith. 3 can be supplied to the take-up shaft 30.
[0033]
As shown in FIGS. 9 and 10, the first and second support plates 51 are provided on both sides of the take-up shaft 30 with a vertical plane including the axis of the take-up shaft 30 as a boundary. ₁ , 51 ₂ Are arranged in an inverted C shape. These support plates 51 ₁ , 51 ₂ Are both left and right support walls 10. ₁ , 10 ₂ It is fixed to the two mounting shafts 52, 52 that are horizontally mounted therebetween. First and second support plates 51 ₁ , 51 ₂ Above, the first and second moving plates 53 ₁ , 53 ₂ Are slidably mounted in the advancing and retracting directions with respect to the winding shaft 30.
[0034]
The first moving plate 53 ₁ The first pressing roller 54 having a narrow width capable of pressing the central portion in the width direction of the outer peripheral surface of the metal corrugated plate 3 wound around the winding shaft 30. ₁ And the first auxiliary pressing roller 55 capable of pressing the outer peripheral surface of the metal corrugated plate 3 over the entire width. ₁ And a first laser welding means 56 for welding the contact portion between the valley portion of the metal corrugated plate 3 and the metal flat plate 2. ₁ And the first moving plate 53 ₁ First urging air cylinder 57 for moving the valve forward and backward ₁ (First biasing means) is the first support plate 51. ₁ Mounted on.
[0035]
As shown in FIGS. 10 and 11, the first pressing roller 54 ₁ Has a tooth profile that meshes with a valley portion and a mountain portion of the metal corrugated plate 3 wound around the winding shaft 30, and has a first moving plate 53. ₁ Bracket 59 standing up from ₁ Is pivotally supported. First auxiliary pressing roller 55 ₁ The bracket 59 ₁ The first pressing roller 54 is supported by the shaft. ₁ The metal corrugated plate 3 is disposed so as to press the outer peripheral surface of the metal corrugated plate 3 immediately before the winding direction.
[0036]
First laser welding means 56 ₁ The first moving plate 53 ₁ The fixed holder 60 of ₁ A plurality of welding torches 61 held by ₁ , 61 ₁ ... (four in the illustrated example) and these welding torches 61 ₁ , 61 ₁ The irradiation laser of... ₁ Spot welding is performed by focusing on a contact portion between the valley portion of the metal corrugated plate 3 and the metal flat plate 2 at predetermined plural locations (four locations in the illustrated example) on both sides. These welding torches 61 ₁ , 61 ₁ ... indicates the laser irradiation direction line L ₁ Winding shaft 30 and first pressing roller 54 ₁ Are arranged so as to pass on a plane including both axes.
[0037]
The second moving plate 53 ₂ The second pressing roller 54 having a narrow width that can press the central portion in the width direction of the outer peripheral surface of the metal flat plate 2 wound around the winding shaft 30. ₂ And a second auxiliary pressing roller 55 capable of pressing the outer peripheral surface of the metal flat plate 2 over the entire width. ₂ And the 2nd laser welding means 56 which welds the contact part of the peak part of the metal corrugated sheet 3, and the metal flat plate 2 ₂ And the second moving plate 53 ₂ Second urging air cylinder 57 for moving the valve forward and backward ₂ The (second urging means) is the second support plate 51. ₂ Mounted on.
[0038]
Second pressing roller 54 ₂ The second moving plate 53 ₂ Bracket 59 standing up from ₂ Is pivotally supported. Second auxiliary pressing roller 55 ₂ The bracket 59 ₂ The second pressing roller 54 is supported by the shaft. ₂ It arrange | positions so that the outer peripheral surface of the metal flat plate 2 may be pressed just before the metal flat plate 2 winding-up direction.
[0039]
Second laser welding means 56 ₂ The second moving plate 53 ₂ The fixed holder 60 of ₂ A plurality of welding torches 60 held by ₂ , 60 ₂ ... (four in the illustrated example) and these welding torches 60 ₂ , 60 ₂ The irradiation laser of ... is the second pressing roller 54 ₂ The spot is welded to a contact portion between the peak portion of the corrugated metal plate 3 and the metal flat plate 2 at predetermined locations on both sides of the metal plate. These welding torches 60 ₂ , 60 ₂ ... indicates the laser irradiation direction line L ₂ Winding shaft 30 and second pressing roller 54 ₂ Are arranged so as to pass on a plane including both axes.
[0040]
Thus, the first laser welding means 56 ₁ And second laser welding means 56. ₂ Is the respective laser irradiation direction line L ₁ , L ₂ Are arranged so as to form a V-shape that opens upwards around the winding shaft 30. Laser irradiation direction line L ₁ , L ₂ The depression angle α is set to approximately 120 ° in the illustrated example.
[0041]
In FIG. 10, the first moving plate 53 ₁ Includes a gear-type first pressing roller 54. ₁ A position sensor 63 for detecting the peaks and valleys is attached. The sensor 63 includes a first pressing roller 54. ₁ Of the first press roller 54 when the crest portion of the metal is engaged with the trough portion of the corrugated metal plate 3 wound around the winding shaft 30. ₁ Other valleys or peaks are detected and a welding signal is output to the welding control unit 64. The welding control unit 64 receives the welding signal from the position sensor 63 and immediately receives the first laser welding means 56. ₁ And the second laser welding means 56 when the winding shaft 30 is rotated by the following predetermined angle β from when the welding signal is received. ₂ Is supposed to work.
[0042]
β = α + θ (1)
α: Laser irradiation direction line L ₁ , L ₂ Horn of
θ: half the rotation angle of the winding shaft 30 corresponding to the interval between two adjacent signals output by the position sensor 63
Note that the rotation angle of the take-up shaft 30 is the first bearing stand 17. ₁ It is detected by the encoder 65 provided in.
[0043]
Next, the operation of this embodiment will be described.
[0044]
First, the moving table 12 is held at the winding position A by the operation of the moving air cylinder 14. At this time, the right end portion of the take-up shaft 30 enters the collet claw 24. Therefore, if the piston 27 of the traction air cylinder 26 is moved to the right, the collet claw 24 is closed by pulling the operating rod 25. The right end of the take-up shaft 30 is held. When the piston 27 is further moved to the right, the collet chuck 20 is pulled rightward while compressing the spring 23, and a certain tension is applied to the winding shaft 30. As a result, even the thin take-up shaft 30 has a large bending rigidity during rotation, so that it exerts a large resistance against a load from the side and hardly causes a core runout. 2 and the metal corrugated plate 3 can be accurately wound.
[0045]
Then, first, the metal flat plate 2 is sent to the take-up shaft 30 by the metal flat plate supply device 42 and inserted into the slit 30a of the shaft 30 as shown in FIG. At that time, the starting end of the metal flat plate 2 is projected out of the slit 30 a by a predetermined length, for example, a length corresponding to substantially half the circumference of the winding shaft 30. Next, the first and second spindles 18 are operated by operating the electric motor 32 of the winding shaft driving means 31. ₁ , 18 ₂ Are rotated about 1.5 to several times to wind the metal plate 2 together with the protruding portion 2a to the outside of the slit 30a (see FIG. 12 (3)).
[0046]
Next, as shown in FIG. 10, the first and second urging air cylinders 57. ₁ , 57 ₂ The first and second movable plates 53 are extended with a predetermined air pressure. ₁ , 53 ₂ The first and second pressing rollers 54 ₁ , 54 ₂ Are press-contacted to the outer peripheral surface of the metal flat plate 2 respectively, and first the second laser welding means 56 ₂ Is operated manually, welding torch 61 ₂ , 61 ₂ The contact portions of the metal flat plates 2 are spot-welded at appropriate intervals by the irradiation laser. The weld point is denoted by p ₁ It shows with.
[0047]
After approximately 1.5 to several rotations of the winding shaft 30, this time, the metal corrugated plate 3 is sent to the winding shaft 30 by the metal corrugated plate supply device 46, and its starting end is used as the winding shaft of the metal flat plate 2. Spot welding is performed on the outer peripheral surface of the portion wound around 30 (weld point p in FIG. 12 (4)). ₂ reference). This welding is performed by the first laser welding means 56. ₁ Manual welding torch 61 ₁ , 61 ₁ The irradiation laser is used. Then, as the rotation of the winding shaft 30 proceeds, the starting end of the metal corrugated plate 3 is placed between the portion of the metal flat plate 2 wound on the winding shaft 30 and the portion wound from now on. , Can be securely sandwiched without deviation.
[0048]
Along with the rotation of the winding shaft 30, the first pressing roller 54 is placed on the first trough of the metal corrugated sheet 2. ₁ The first and second laser welding means 56 from the stage where the crests are engaged. ₁ , 56 ₂ In order to automatically control the welding control unit 64, the welding control unit 64 is put into an operating state.
[0049]
Thus, the position sensor 63 changes the state of the first pressing roller 54 every time the valley of the metal corrugated plate 3 contacts the metal flat plate 2. ₁ Since the welding signal is output to the welding control unit 64, the unit 64 is connected to the first laser welding means 56. ₁ Activating the welding torch 61 ₁ , 61 ₁ The contact portion between the trough of the metal corrugated plate 3 and the metal flat plate 2 is made p by the irradiation laser of ₂ Spot weld as shown in.
[0050]
Further, when the winding shaft 30 rotates by the angle β from the point where the position sensor 63 outputs the welding signal, the peak portion of the metal corrugated sheet 3 reaches the contact point with the metal flat plate 2 according to the equation (1). become. At this time, the welding control unit 64 calculates this from the signal from the encoder 65 and calculates the second laser welding means 56. ₂ The welding torch 61 ₂ , 61 ₂ The contact portion between the peak portion of the metal corrugated plate 3 and the metal flat plate 2 is shown in FIG. _Three Spot weld as shown in.
[0051]
In addition, in this case, as described above, the top part a and the bottom part b of the valley are formed flat on the crest of the metal corrugated plate 3, so that the top part a and the bottom part b are in contact with the metal flat plate 2 in a relatively wide area. Each welding torch 61 ₁ , 61 ₁ ...; 61 ₂ , 61 ₂ Even if there is some deviation in the laser irradiation point from ..., the top a and bottom b and the metal flat plate 2 can be reliably welded.
[0052]
In this way, the first and second lasers are detected by one position sensor 63 for detecting that the valley portion of the metal corrugated plate 3 is in contact with the metal flat plate 2 and one for detecting the rotation angle of the winding shaft 30. Welding means 56 ₁ , 56 ₂ The contact portion between the trough portion of the metal corrugated plate 3 and the metal flat plate 2 and the contact portion between the peak portion of the metal corrugated plate 3 and the metal flat plate 2 can be easily and accurately welded.
[0053]
Moreover, the first and second moving plates 53 ₁ , 53 ₂ The first and second auxiliary pressing rollers 54 provided in the ₁ , 54 ₂ The first and second pressing rollers 54 ₁ , 54 ₂ Since the outer peripheral surfaces of the metal corrugated plate 3 and the metal flat plate 2 are pressed over the entire width immediately before the rotation direction R of the winding shaft 30, that is, immediately before the welding point, at each welding point, the metal corrugated plate 3. In addition, it is possible to secure a good contact state between the metal flat plates and ensure their laser welding.
[0054]
Further, the pair of left and right workpiece pressing members 38, 38 on the moving table 12 always presses both side ends of the metal corrugated plate 3 and the metal flat plate 2 wound around the winding shaft 30, so that the side ends thereof are flush with each other. Can be neatly arranged in a shape, and finishing processing after molding can be omitted . And In both cases, if the rotation of the take-up shaft 30 is continued, the metal flat plate 2 and the metal corrugated plate 3 can be superposed and densely wound in a spiral shape.
[0055]
As the winding of the metal corrugated plate 3 and the metal flat plate 2 by the winding shaft 30 proceeds, the respective diameters increase, but the first and second pressing rollers 54 ₁ , 54 ₂ The first and second movable plates 53 are maintained in a state where they are pressed against the outer peripheral surfaces of the metal corrugated plate 3 and the metal flat plate 2 with a constant pressure. ₁ , 53 ₂ And the first and second urging air cylinders 57 ₁ , 57 ₂ Shrink. The first and second moving plates 53 ₁ , 53 ₂ Includes first and second laser welding means 56. ₁ , 56 ₂ Therefore, even if the diameter of the metal flat plate 2 is increased, the first laser welding means 56 is also provided. ₁ Welding torch 61 ₁ , 61 ₁ The focus of the irradiation laser from ... is set at a predetermined contact portion between the trough of the metal corrugated plate 3 and the metal flat plate 2, and the second laser welding means 56. ₂ Welding torch 61 ₂ , 61 ₂ The focus of the irradiation laser from ... can be kept at the specified contact portion between the peak portion of the metal corrugated plate 3 and the metal flat plate 2, respectively, so that the contact portions can be accurately welded.
[0056]
During the winding of the metal flat plate 2 and the metal corrugated plate 3, by stopping the operation of the electric motors 43 and 47 of the metal flat plate supply device 42 and the metal corrugated plate supply device 46, freeing them, The metal flat plate and metal corrugated plate supply devices 42 and 47 are made not to interfere with the winding operation of the winding shaft 30.
[0057]
Further, the pair of left and right workpiece pressing members 38, 38 on the moving table 12 always presses both side ends of the metal corrugated plate 3 and the metal flat plate 2 wound around the winding shaft 30, so that the side ends thereof are flush with each other. It can be neatly arranged in a shape and the finishing process after molding can be omitted.
[0058]
The metal flat plate 2 is longer than the metal corrugated plate 3. Therefore, at the end of winding, the end of the metal flat plate 2 is welded in close contact with the outer peripheral surface of the metal flat plate 2 itself. Further, as described above, since the wave amplitude of the metal corrugated plate 3 gradually decreases as it approaches the end, local bulge of the outermost peripheral portion of the metal flat plate 2 due to the end of the metal corrugated plate 3 can be suppressed as much as possible. .
[0059]
In this way, the honeycomb cylinder 4 approximate to a cylinder is formed on the winding shaft 30. Thereafter, the first and second urging air cylinders 57 ₁ , 57 ₂ The first and second pressing rollers 54 are contracted. ₁ , 54 ₂ Is moved away from the honeycomb cylinder 4, and the piston 27 of the traction air cylinder 26 is moved to the left to open the collet chuck 20, and the right end of the winding shaft 30 is freed. Then, when the moving base 12 is moved to the payout position B as shown in FIG. 7 by the operation of the moving air cylinder 14, the left work pressing member 38 provided on the moving base 12 winds the honeycomb cylinder 4. It slides to the right along the take-off shaft 30 and pays out from its right end. The honeycomb tubular body 4 paid out from the winding shaft 30 falls from between the pair of work pressing members 38 and 38 by its own weight and is accommodated in the container 40. In this way, the formed honeycomb tubular body 4 is paid out from the take-up shaft 30 at the specially provided pay-out position B apart from the take-up position A, and thus is disposed around the take-up position A. , Metal corrugated plate supply device 46, metal flat plate supply device 42, first and second laser welding means 56. ₁ , 56 ₂ The honeycomb tubular body 4 can be discharged without being interfered by various devices such as the above.
[0060]
By the way, the slit 30a of the winding shaft 30 only needs to be very narrow enough to receive only the starting end portion of the metal flat plate 2, so that the strength of the winding shaft 30 can be secured and its diameter can be reduced. As a result, the space at the center of the honeycomb tube 4 where the winding shaft 30 has been pulled out can be narrowed, and the catalyst carrying area of the honeycomb tube 4 can be increased.
[0061]
When the starting end of the metal flat plate 2 is inserted into the slit 30 a of the winding shaft 30, the starting end protrudes outside the slit 30 a by a predetermined length, and the protruding portion 2 a together with the other portions of the metal flat plate 2 is taken up by the winding shaft. 30, the straight portion 2 b (see FIG. 1) of the metal flat plate 2 engaged with the slit 30 a of the winding shaft 30 is supported at both ends by the cylindrical portion 2 c wound around the winding shaft 30. As a result, the linear portion 2b has high support rigidity and can be exposed to a high-speed exhaust flow, but vibration of the linear portion can be prevented.
[0062]
First and second laser welding means 56 ₁ , 56 ₂ Each welding torch 61 ₁ , 61 ₁ ...; 61 ₂ , 61 ₂ Laser irradiation direction line L ₁ , L ₂ Are arranged so as to open in a V shape toward each other, so that each welding torch 61 ₁ , 61 ₁ ...; 61 ₂ , 61 ₂ The laser of... Is always irradiated under the operator's eyes, and the eyes of the operator can be protected from the irradiation laser. Further, when there is no work piece on the winding shaft 30, one or both welding torches 61 are mistakenly formed. ₁ , 61 ₁ ...; 61 ₂ , 61 ₂ Even if the laser is irradiated from ..., each laser is not irradiated to the other welding torch, and the damage can be avoided.
[0063]
Next, a second embodiment of the present invention will be described with reference to FIGS.
[0064]
FIG. 13 is a side view of the metal flat plate and the metal corrugated plate before winding, and FIG. 14 is an explanatory view of the winding action of the metal flat plate and the metal corrugated plate. As shown in FIG. 13, when the honeycomb tubular body 4 is manufactured, in the metal flat plate 2 and the metal corrugated plate 3 for one honeycomb tubular body 4 to be prepared, the metal corrugated plate 3 has a start end side along the winding direction. A flat plate portion 3a having a certain length is formed. Other shapes are the same as those of the embodiment shown in FIG.
[0065]
The manufacturing apparatus is used for manufacturing the honeycomb tubular body 4. In winding by the winding shaft 30, first, as in the case of the above embodiment, as shown in FIG. 14 (1), the starting end of the metal flat plate 2 is inserted into the slit 30 a of the winding shaft 30, Is projected out of the slit 30a by a predetermined length. Next, the take-up shaft 30 is rotated approximately 1.5 to several times, and the metal flat plate 2 is taken up together with the protruding portion 2a to the outside of the slit 30a.
[0066]
Next, as shown in FIG. 10, the first and second urging air cylinders 57. ₁ , 57 ₂ The first and second movable plates 53 are extended with a predetermined air pressure. ₁ , 53 ₂ The first and second pressing rollers 54 ₁ , 54 ₂ Are press-contacted to the outer peripheral surface of the metal flat plate 2 respectively, and first the second laser welding means 56 ₂ Is operated manually, welding torch 61 ₂ , 61 ₂ The contact portions of the metal flat plates 2 are spot-welded at appropriate intervals by the irradiation laser. The weld point is indicated by the symbol p in FIG. ₁ It shows with.
[0067]
After approximately 1.5 to several rotations of the winding shaft 30, this time, the metal corrugated plate 3 is sent to the winding shaft 30, and the flat plate portion 3a on the starting end side is made of metal as shown in FIG. It inserts between the part wound around the winding shaft 30 of the flat plate 2, and the part wound up from now on.
[0068]
Then, by the subsequent rotation of the winding shaft 30, the flat plate portion 3 a is sufficiently sandwiched between the portion wound around the winding shaft 30 of the metal flat plate 2 and the portion wound up from now on, and then FIG. 4) to p ₂ As shown by the figure, the second laser welding means 56 ₂ Manual welding torch 61 ₂ , 61 ₂ The contact portion between the flat plate portion 3a and the outer metal flat plate 2 is spot-welded by the irradiation laser. In this case, since the welding allowable range between the flat plate portion 3a of the metal corrugated plate 3 and the metal flat plate 2 can be set sufficiently wide, the welding can be easily performed.
[0069]
Next, as the winding shaft 30 rotates, the first pressing roller 54 is placed on the first trough of the metal corrugated sheet 2. ₁ The first and second laser welding means 56 from the stage where the crests are engaged. ₁ , 56 ₂ In order to automatically control the welding control unit 64, the welding control unit 64 is put into an operating state. Therefore, when each trough of the metal corrugated plate 3 contacts the outer periphery of the metal flat plate 3, p _Three As shown by the first laser welding means 56 ₁ Welding torch 61 by automatic operation ₂ , 61 ₂ When spot welding is performed by the irradiation laser of ... and each crest of the metal corrugated plate 3 comes into contact with the outer periphery of the inner peripheral surface of the metal flat plate 3, p _Four As shown by the figure, the second laser welding means 56 ₂ Welding torch 61 by automatic operation ₂ , 61 ₂ Spot welding is performed by the irradiation laser.
[0070]
The present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention. For example, first and second urging air cylinders 57 ₁ , 57 ₂ Instead of the air pressure of the first and second moving plates 53 with spring force ₁ , 53 ₂ May be pressed toward the take-up shaft 30 side. The first and second laser welding means 56 ₁ , 56 ₂ Needless to say, can be automated in all steps.
[0071]
【The invention's effect】
As described above, according to the first feature of the present invention, in the honeycomb cylinder manufacturing apparatus, the metal flat plate and the metal corrugated plate are overlapped and spirally wound around the winding shaft to form the honeycomb cylindrical body. The first bearing base fixed to the machine base is supported by the first spindle for coupling one end of the winding shaft, while the moving base is mounted on the machine base so that the winding position along the axial direction of the winding shaft and A second spindle that can be releasably held at the other end of the take-up shaft is supported by a second bearing base that is provided so as to be movable between the payout positions, and is fixed to the moving base. A pair of work pressing members that hold both ends of the metal flat plate and the metal corrugated plate wound around the winding shaft are provided, and the first and second spindles are connected to a winding shaft driving means capable of synchronously driving them and moved. The take-up shaft at the stand take-up position The other end can be held and released by the second spindle, and the honeycomb cylinder formed from the take-up shaft is discharged by the work pressing member at the transfer position of the movable table. After forming the cylindrical body, the honeycomb cylindrical body is moved from the other end of the winding shaft to a discharging position separated from the winding position by moving the movable table to the discharging position with the other end of the winding shaft being free. It can be paid out, and interference with various devices arranged around the winding position can be avoided.
[0072]
According to the second aspect of the present invention, the first laser is welded by irradiating a laser to a contact portion between a trough of the metal corrugated plate and the metal flat plate when winding the metal flat plate and the metal corrugated plate by the winding shaft. Welding means and second laser welding means for irradiating and welding the contact portion between the peak portion of the corrugated metal plate and the metal flat plate, and the direction of the irradiation laser direction is centered on the take-up axis. Since there is no work piece on the take-up shaft, even if the first or second laser welding means is operated by mistake, either one of them will be opened. The irradiation laser does not hit the other, and the damage can be prevented.
[0073]
Furthermore, according to the third feature of the present invention, the winding shaft, the first and second spindles are horizontally arranged, and the first laser welding means and the second laser welding means are wound around their irradiation laser direction lines. Since it was arranged on the machine base so as to open in the shape of a V toward each other around the spindle, each laser welding means would always irradiate the laser under the operator's eyes. A person's eyes can be protected from the irradiation laser.
[0074]
Furthermore, according to the fourth aspect of the present invention, the first moving plate for supporting the first laser welding means and the second moving plate for supporting the second laser welding means can be moved back and forth with respect to the winding shaft. The first moving plate is provided with a first pressing roller capable of pressing the outer peripheral surface of the metal corrugated plate wound around the winding shaft, and the first pressing roller is pressed against the outer peripheral surface of the metal corrugated plate. The first urging means for urging the first moving plate in the forward direction should be connected to the first moving plate, and the outer peripheral surface of the metal flat plate wound around the take-up shaft can be pressed against the second moving plate. Second pressing roller 54 ₂ And the second urging means for urging the second moving plate in the forward direction so as to press the second pressing roller against the outer peripheral surface of the metal flat plate is connected to the second moving plate. As the winding of the metal corrugated sheet and the metal flat plate proceeds, the focal point of the irradiation laser from the first laser welding means is adjusted to the prescribed contact between the valley of the metal corrugated sheet and the metal flat plate even if the respective diameters increase. In addition, the focal point of the irradiation laser from the second laser welding means can be kept at the specified contact portion between the peak portion of the metal corrugated plate and the metal flat plate, so that stable laser welding is always possible.
[0075]
Furthermore, according to the fifth feature of the present invention, the first auxiliary pressing roller capable of pressing the outer peripheral surface of the metal corrugated plate immediately before the welded portion between the trough of the metal corrugated plate and the metal flat plate is provided on the first moving plate. The second moving plate is provided with a second auxiliary pressing roller that can press the outer peripheral surface of the metal flat plate immediately before the welded portion between the peak portion of the metal corrugated plate and the metal flat plate. It is possible to secure a good contact state between the plate and the metal flat plate and to ensure their laser welding.
[Brief description of the drawings]
FIG. 1 is a front view of a metal catalyst carrier.
2 is a sectional view taken along line 2-2 of FIG.
FIG. 3 is a side view of a metal flat plate and a metal corrugated plate before winding.
FIG. 4 is a plan view of a honeycomb body manufacturing apparatus.
5 is a plan view of the main part of FIG. 4;
6 is a cross-sectional view taken along line 6-6 in FIG. 4;
FIG. 7 is an operation explanatory diagram corresponding to FIG. 6;
8 is an enlarged sectional view taken along line 8-8 in FIG. 6;
9 is a sectional view taken along line 9-9 of FIG.
10 is an enlarged view of the main part of FIG. 9;
11 is a view taken in the direction of arrow 11 in FIG. 10;
FIG. 12 is an explanatory diagram of a winding action of a metal flat plate and a metal corrugated plate.
FIG. 13 is a side view of a metal flat plate and a metal corrugated plate before winding according to another embodiment of the present invention.
14 is an explanatory diagram of a winding action of the metal flat plate and the metal corrugated plate of FIG.
[Explanation of symbols]
A: Winding position
B: Dispensing position
L ₁ .... Laser irradiation direction line of the first laser welding means
L ₂ .... Laser irradiation direction line of second laser welding means
2. Metal plate
3. Metal corrugated sheet
4 ... Honeycomb cylinder
8 ... Machine stand
12 ... Moving stand
17 ₁ ... First bearing stand
17 ₂ ... Second bearing stand
18 ₁ ... First spindle
18 ₂ ... Second spindle
20 ... Collet chuck
26 .... Air cylinder for chuck
30 ... Take-up shaft
31... Winding shaft drive means
38... Work holding member
53 ₁ ... First moving plate
53 ₂ ... Second moving plate
54 ₁ ... First pressing roller
54 ₂ ... Second pressing roller
55 ₁ ... First auxiliary pressing roller
55 ₂ ... Second auxiliary pressing roller
56 ₁ ... First laser welding means
56 ₂ ... Second laser welding means
57 ₁ ... First biasing means (first biasing means for Air cylinder)
57 ₂ ... Second urging means (second urging means for Air cylinder)

Claims

In the honeycomb cylinder manufacturing apparatus, in which the metal flat plate (2) and the metal corrugated plate (3) are overlapped and wound up spirally by the winding shaft (30) to form the honeycomb cylinder (4).
The first bearing base (17 ₁ ) fixed to the machine base (8) supports the first spindle (18 ₁ ) that joins one end of the take-up shaft (30), while the movable base on the machine base (8). (12) is provided so that it can move between the winding position (A) and the payout position (B) along the axial direction of the winding shaft (30), and is fixed to the moving table (12). A second spindle (18 ₂ ) capable of releasably holding the other end of the winding shaft (30) is supported on the two bearing bases (17 ₂ ), and the winding shaft (30) is mounted on the movable base (12). ) Are provided with a pair of work pressing members (38, 38) for pressing both side ends of the metal flat plate (2) and the corrugated metal plate (3) wound on the first and second spindles (18 ₁ , 18 ₂ ). The winding shaft drive means (31) that can drive these synchronously is connected, and the winding position of the movable base (12) Holding and releasing by the second spindle and the other end (18 ₂₎ of A) the take-up shaft (30) is capable, molded from dispensing position of the moving base (12) (B) in the winding shaft (30) The honeycomb tubular body manufacturing apparatus is characterized in that the honeycomb tubular body (4) is discharged by a work pressing member.

In claim 1,
When winding the metal flat plate (2) and the metal corrugated plate (3) by the winding shaft (30), the contact portion between the valley of the metal corrugated plate (3) and the metal flat plate (2) is irradiated with a laser for welding. First laser welding means (56 ₁ ) for performing welding, and second laser welding means (56 ₂ ) for welding by irradiating a laser to a contact portion between the peak portion of the metal corrugated plate (3) and the metal flat plate (2). The irradiating laser direction lines (L ₁ , L ₂ ) are arranged on the machine base (8) so as to open in a V-shape mutually outward in the radial direction around the winding shaft (30). An apparatus for manufacturing a honeycomb cylindrical body.

In claim 2,
The winding shaft (30), the first and second spindles (18 ₁ , 18 ₂ ) are horizontally arranged, and the first laser welding means (56 ₁ ) and the second laser welding means (56 ₂ ) are irradiated to them. Honeycomb characterized in that it is arranged on the machine base (8) so that the laser direction lines (L ₁ , L ₂ ) open in a V shape toward each other upward about the winding shaft (30). Tube manufacturing equipment.

In claim 2 or 3,
The first moving plate (53 ₁₎ and the second laser welding means (56 ₂₎ the second moving plate for supporting the (53 ₂₎ winding axis for supporting the first laser welding means (56 ₁₎ to (30) The first pressing roller is attached to the machine base (8) so as to be able to advance and retreat, and can press the outer peripheral surface of the metal corrugated plate (3) wound around the winding shaft (30) to the first moving plate (53 ₁ ). (54 ₁ ) and a first attachment for urging the first moving plate (53 ₁ ) in the forward direction so as to press the first pressing roller (54 ₁ ) against the outer peripheral surface of the metal corrugated plate (3). The urging means (57 ₁ ) is connected to the first moving plate (53 ₁ ), and the outer peripheral surface of the metal flat plate (2) wound around the winding shaft (30) is pressed against the second moving plate (53 ₂ ). with which it may be the second providing a pressure roller (54 _2), pressing the second pressing roller (54 ₂₎ on the outer peripheral surface of the metal flat plate (3) To the second moving plate (53 _2), wherein a second biasing means for biasing the (57 ₂₎ coupled to the second moving plate (53 ₂₎ in the forward direction, the manufacturing apparatus of the honeycomb cylinder.

In claim 4,
The first moving plate (53 _1), the first auxiliary pressing roller capable of pressing the outer peripheral surface of the metal wave plate (3) at the weld just before the valley and the metal flat plate (2) of the metal wave plate (3) ( 55 ₁ ) can be provided, and the outer peripheral surface of the metal flat plate (2) can be pressed against the second moving plate (53 ₂ ) just before the welded portion between the peak portion of the metal corrugated plate (3) and the metal flat plate (2). An apparatus for manufacturing a honeycomb cylindrical body, wherein a second auxiliary pressing roller (55 ₂ ) is provided.