JP3645998B2

JP3645998B2 - Honeycomb cylinder manufacturing equipment

Info

Publication number: JP3645998B2
Application number: JP36102597A
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: JPH11188441A

Description

【０００１】
【発明の属する技術分野】
本発明は、主としてエンジンの排気浄化装置用金属製触媒担体に用いるハニカム筒体の製造方法及び装置に関し、特に、金属平板及び金属波板を重ね合わせて回転する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ていくとき、巻き取り軸の周方向に配設される第１及び第２レーザ溶接手段の照射レーザにより、金属波板の谷部と金属平板の接触部、及び金属波板の山部と金属平板との接触部をそれぞれ溶接する、ハニカム筒体の製造装置に関する。
【０００２】
【従来の技術】
本出願人は、かゝるハニカム筒体の製造装置に関して、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の接触部、及び金属波板の山部と金属平板との接触部を第１及び第２位置センサにより検知し、その検知信号に応じて、第１及び第２レーザ溶接手段をそれぞれ作動させて上記各接触部を溶接するようにしたものを、特願平８−１１５０４５号の出願により、既に提案している。
【０００３】
【発明が解決しようとする課題】
上記提案のカム筒体の製造装置では、金属平板及び金属波板が巻き取り軸に間巻き取られていくとき、金属波板の谷部は金属平板の外周側にくるので、該山部の金属平板との接触部は第１位置センサにより比較的容易に検知することができるが、金属波板の山部は金属平板の内周側にくるので、第２位置センサにより、金属平板を通して、それに接触する金属波板の山部を検知することは困難であり、特殊な位置センサが必要となる。
【０００４】
本発明は、かゝる事情に鑑みてなされたもので、金属波板の谷部と金属平板との接触部を検知する一個の位置センサと、巻き取り軸の回転角を検知する回転角センサとで、金属波板の山部と、その外側にくる金属平板との接触部をも的確に検知して、角接触部のレーザ溶接を的確に行い得るようにした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。
【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、本発明は、金属平板及び金属波板を重ね合わせて回転する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ていくとき、巻き取り軸の周方向に配設される第１及び第２レーザ溶接手段の照射レーザにより、金属波板の谷部と金属平板の接触部、及び金属波板の山部と金属平板との接触部をそれぞれ溶接する、ハニカム筒体の製造装置において、
巻き取り軸上で金属波板の谷部と金属平板とが接触したとき、それを検知して信号を出力する位置センサと、巻き取り軸の回転角度を検知する回転角センサと、位置センサの出力信号を受けて第１レーザ溶接手段を作動させると共に、位置センサの出力信号を受けてから、巻き取り軸が下記角度β
β＝α＋θ
但し、α：巻き取り軸の回転方向に沿って測った第１レーザ溶接手段のレーザ照射方向線から第２レーザ溶接手段のレーザ照射線までの角度
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の回転角の２分の１の角度
回転したことを回転角センサの出力信号から判断したとき第２レーザ溶接手段を作動させる溶接制御ユニットとを備えたことを第１の特徴とする。
【０００６】
この第１の特徴によれば、金属波板及び金属平板の巻き取り中、位置センサは、金属波板の谷部が金属平板に接触する度に検知信号を出力し、その信号を受けた溶接制御ユニットは、第１レーザ溶接手段を作動して、その照射レーザにより金属波板の谷部と金属平板との接触部を溶接する。また、溶接制御ユニットは、位置センサが信号を出力した点から巻き取り軸が前記角度β回転すると、金属波板の山部が金属平板との接触点に到達したことになり、溶接制御ユニットは、これをエンコーダからの信号に基づいて判断して、第２レーザ溶接手段を作動し、その照射レーザにより、金属波板の山部と金属平板との接触部を溶接する。
【０００７】
また本発明は、上記特徴に加えて、第１レーザ溶接手段を支持する移動板を巻き取り軸に対して半径方向に進退可能に配設し、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に噛合して押圧し得る歯車型の押圧ローラと、巻き取り軸上で金属波板の谷部と金属平板とが接触したとき、この押圧ローラ外周の山又は谷を検知する前記位置センサとを設けると共に、この押圧ローラを上記金属平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付勢手段を移動板に連結したことを第２の特徴とする。
【０００８】
この第２特徴によれば、金属波板の谷部と金属平板との接触部を、前記押圧ローラを介して位置センサにより検知することができから、位置センサを前記押圧ローラの周囲のどこへも設置することができる。。
【０００９】
【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。
【００１０】
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。
【００１１】
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。
【００１２】
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。
【００１３】
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。
【００１４】
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。
【００１５】
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。
【００１６】
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。
【００１７】
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。
【００１８】
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。
【００１９】
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。
【００２０】
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。
【００２１】
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。
【００２２】
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。
【００２３】
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。
【００２４】
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。
【００２５】
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。
【００２６】
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。
【００２７】
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（付勢手段）が第１支持板５１₁に取付けられる。
【００２８】
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。
【００２９】
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。
【００３０】
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が第２支持板５１₂に取付けられる。
【００３１】
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。
【００３２】
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。
【００３３】
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。
【００３４】
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。
【００３５】
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。
【００３６】
次に、この実施例に作用について説明する。
【００３７】
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。
【００３８】
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）。
【００３９】
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。
【００４０】
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。
【００４１】
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。
【００４２】
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。
【００４３】
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。
【００４４】
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。
【００４５】
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。
【００４６】
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。
【００４７】
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。
【００４８】
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。
【００４９】
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。
【００５０】
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。
【００５１】
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。
【００５２】
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。
【００５３】
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。
【００５４】
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。
【００５５】
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。
【００５６】
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。
【００５７】
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。
【００５８】
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。
【００５９】
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。
【００６０】
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。
【００６１】
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。
【００６２】
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。
【００６３】
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、本発明の第１の特徴においては、位置センサ６３を、これにより金属平板２の外周面に接触する金属波板３の谷部を直接検知し得るよう、設置することもできる。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。
【００６４】
【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回転する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ていくとき、巻き取り軸の周方向に配設される第１及び第２レーザ溶接手段の照射レーザにより、金属波板の谷部と金属平板の接触部、及び金属波板の山部と金属平板との接触部をそれぞれ溶接する、ハニカム筒体の製造装置において、
巻き取り軸上で金属波板の谷部と金属平板とが接触したとき、それを検知して信号を出力する位置センサと、巻き取り軸の回転角度を検知する回転角センサと、位置センサの出力信号を受けて第１レーザ溶接手段を作動させると共に、位置センサの出力信号を受けてから、巻き取り軸が下記角度β
β＝α＋θ
但し、α：巻き取り軸の回転方向に沿って測った第１レーザ溶接手段のレーザ照射方向線から第２レーザ溶接手段のレーザ照射線までの角度
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の回転角の２分の１の角度
回転したことを回転角センサの出力信号から判断したとき第２レーザ溶接手段を作動させる溶接制御ユニットとを備えたので、金属波板の谷部と金属平板との接触部を検知する第１位置センサと、巻き取り軸の回転角を検知する回転センサとの出力信号により、金属波板の山部と金属平板との接触部をも的確に検知することができ、したがって第１及び第２レーザ溶接手段による、それら接触部の溶接を簡単、的確に行うことができる。
【００６５】
また本発明の第２の特徴によれば、第１レーザ溶接手段を支持する移動板を巻き取り軸に対して半径方向に進退可能に配設し、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に噛合して押圧し得る歯車型の押圧ローラと、巻き取り軸上で金属波板の谷部と金属平板とが接触したとき、この押圧ローラ外周の山又は谷を検知する前記位置センサとを設けると共に、この押圧ローラを上記金属平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付勢手段を移動板に連結したので、位置センサを前記押圧ローラの周囲に設置することができ、そのレイアウトの自由度が高い。
【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】
２・・・・・金属平板
３・・・・・金属波板
４・・・・・ハニカム筒体
３０・・・・巻き取り軸
５３₁・・・移動板（第１移動板）
５４₁・・・押圧ローラ（第１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・・・付勢手段（第１付勢用エアシリンダ）
６３・・・・位置センサ
６４・・・・溶接制御ユニット
６５・・・・回転角センサ（エンコーダ）[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method and an apparatus for manufacturing a honeycomb cylinder mainly used for a metal catalyst carrier for an exhaust gas purification device of an engine, and in particular, spirally wound by a winding shaft that rotates by rotating a metal flat plate and a metal corrugated plate. Then, when forming the honeycomb cylindrical body, by the irradiation laser of the first and second laser welding means disposed in the circumferential direction of the winding shaft, the contact portion between the trough portion of the metal corrugated plate and the metal flat plate, and The present invention relates to an apparatus for manufacturing a honeycomb tubular body, in which a contact portion between a peak portion of a metal corrugated plate and a metal flat plate is welded.
[0002]
[Prior art]
The present applicant relates to such an apparatus for manufacturing a honeycomb tubular body, when winding a metal flat plate and a metal corrugated plate with a winding shaft, a contact portion between the valley of the metal corrugated plate and the metal flat plate, and a peak of the metal corrugated plate. The first and second position sensors detect the contact portion between the contact portion and the metal flat plate, and according to the detection signal, the first and second laser welding means are operated to weld the contact portions. Have already been proposed by Japanese Patent Application No. 8-11545.
[0003]
[Problems to be solved by the invention]
In the proposed cam barrel manufacturing apparatus, when the metal flat plate and the corrugated plate are wound around the winding shaft, the trough of the metal corrugated plate comes to the outer peripheral side of the metal flat plate. Although the contact portion with the metal flat plate can be detected relatively easily by the first position sensor, the crest portion of the metal corrugated plate comes to the inner peripheral side of the metal flat plate, so that the second position sensor passes through the metal flat plate, It is difficult to detect the crest of the corrugated metal plate that contacts it, and a special position sensor is required.
[0004]
The present invention has been made in view of such circumstances, and includes a single position sensor that detects a contact portion between a trough portion of a metal corrugated plate and a metal flat plate, and a rotation angle sensor that detects a rotation angle of a winding shaft. The honeycomb tubular body manufacturing apparatus capable of accurately detecting the contact portion between the crest portion of the metal corrugated plate and the metal flat plate on the outside thereof and accurately performing laser welding of the corner contact portion. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a method for winding a metal plate and a corrugated sheet in a spiral manner by a winding shaft that is rotated to form a honeycomb tubular body. The corrugated portion of the metal corrugated plate and the contact portion of the metal flat plate, and the contact portion of the corrugated portion of the metal corrugated plate and the metal flat plate are welded by the irradiation lasers of the first and second laser welding means arranged in the direction, respectively. In the honeycomb cylinder manufacturing apparatus,
When the trough of the metal corrugated plate and the metal flat plate come into contact with each other on the winding shaft, a position sensor that detects the contact and outputs a signal, a rotation angle sensor that detects the rotation angle of the winding shaft, The first laser welding means is operated in response to the output signal, and after the output signal from the position sensor is received, the winding shaft has the following angle β
β = α + θ
Where α is an angle from the laser irradiation direction line of the first laser welding means to the laser irradiation line of the second laser welding means measured along the rotation direction of the winding shaft
θ: half the rotation angle of the winding shaft corresponding to two adjacent signal intervals output by the position sensor 63
A first feature is that it includes a welding control unit that operates the second laser welding means when it is determined from the output signal of the rotation angle sensor that rotation has occurred.
[0006]
According to the first feature, during winding of the metal corrugated sheet and the metal flat plate, the position sensor outputs a detection signal every time the valley portion of the metal corrugated sheet contacts the metal flat plate, and the welding that receives the signal. The control unit operates the first laser welding means to weld the contact portion between the trough portion of the metal corrugated plate and the metal flat plate by the irradiation laser. In addition, when the winding shaft rotates the angle β from the point where the position sensor outputs a signal, the welding control unit means that the peak portion of the metal corrugated plate has reached the contact point with the metal flat plate. This is judged based on the signal from the encoder, the second laser welding means is operated, and the contact portion between the peak portion of the metal corrugated plate and the metal flat plate is welded by the irradiation laser.
[0007]
According to the present invention, in addition to the above features, a moving plate that supports the first laser welding means is disposed so as to be movable back and forth in the radial direction with respect to the winding shaft, and the first moving plate is wound around the winding shaft. When a gear-shaped pressing roller that can be engaged with and pressed against the outer peripheral surface of the metal corrugated sheet to be brought into contact with a trough portion of the metal corrugated sheet and the metal flat plate on the winding shaft, And a second biasing means for urging the first moving plate in the forward direction to press the pressing roller against the outer peripheral surface of the metal flat plate. Features.
[0008]
According to the second feature, since the contact portion between the trough portion of the metal corrugated plate and the metal flat plate can be detected by the position sensor via the pressing roller, the position sensor is moved anywhere around the pressing roller. Can also be installed. .
[0009]
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.
[0010]
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.
[0011]
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.
[0012]
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.
[0013]
Now, an apparatus for manufacturing the honeycomb tubular body 4 will be described with reference to FIGS.
[0014]
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.
[0015]
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.
[0016]
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.
[0017]
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.
[0018]
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.
[0019]
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.
[0020]
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.
[0021]
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.
[0022]
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.
[0023]
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.
[0024]
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.
[0025]
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.
[0026]
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.
[0027]
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 (Biasing means) is the first support plate 51 ₁ Mounted on.
[0028]
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.
[0029]
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.
[0030]
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 Is the second support plate 51. ₂ Mounted on.
[0031]
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.
[0032]
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.
[0033]
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.
[0034]
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.
[0035]
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.
[0036]
Next, the operation of this embodiment will be described.
[0037]
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.
[0038]
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)).
[0039]
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.
[0040]
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.
[0041]
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.
[0042]
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.
[0043]
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.
[0044]
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.
[0045]
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.
[0046]
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.
[0047]
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.
[0048]
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.
[0049]
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.
[0050]
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.
[0051]
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. .
[0052]
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.
[0053]
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.
[0054]
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.
[0055]
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.
[0056]
Next, a second embodiment of the present invention will be described with reference to FIGS.
[0057]
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.
[0058]
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.
[0059]
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.
[0060]
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.
[0061]
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.
[0062]
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.
[0063]
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, in the first feature of the present invention, the position sensor 63 can be installed so that a valley portion of the metal corrugated plate 3 in contact with the outer peripheral surface of the metal flat plate 2 can be directly detected thereby. The first and second laser welding means 56 ₁ , 56 ₂ Needless to say, can be automated in all steps.
[0064]
【The invention's effect】
As described above, according to the first feature of the present invention, when a honeycomb cylindrical body is formed by spirally winding a metal flat plate and a metal corrugated plate by a winding shaft that rotates. By the irradiation laser of the first and second laser welding means disposed in the circumferential direction of the shaft, the contact portion between the valley portion of the metal corrugated plate and the metal flat plate, and the contact portion between the peak portion of the metal corrugated plate and the metal flat plate In the manufacturing equipment for honeycomb tubular bodies that are respectively welded,
When the trough of the metal corrugated plate and the metal flat plate come into contact with each other on the winding shaft, a position sensor that detects the contact and outputs a signal, a rotation angle sensor that detects the rotation angle of the winding shaft, The first laser welding means is operated in response to the output signal, and after the output signal from the position sensor is received, the winding shaft has the following angle β
β = α + θ
Where α is an angle from the laser irradiation direction line of the first laser welding means to the laser irradiation line of the second laser welding means measured along the rotation direction of the winding shaft
θ: half the rotation angle of the winding shaft corresponding to two adjacent signal intervals output by the position sensor 63
Since it has the welding control unit which operates the 2nd laser welding means when judging that it rotated from the output signal of a rotation angle sensor, the 1st position which detects the contact part of the trough part of a metal corrugated sheet, and a metal flat plate An output signal from the sensor and a rotation sensor that detects the rotation angle of the winding shaft can accurately detect the contact portion between the peak portion of the metal corrugated plate and the metal flat plate, and thus the first and second lasers. Welding of these contact portions by welding means can be performed easily and accurately.
[0065]
According to the second aspect of the present invention, the moving plate that supports the first laser welding means is disposed so as to be movable back and forth in the radial direction with respect to the winding shaft, and the first moving plate is disposed on the winding shaft. When a gear-type pressing roller that can mesh and press on the outer peripheral surface of the metal corrugated sheet to be wound, and a trough portion of the metal corrugated sheet and the metal flat plate on the winding shaft, The position sensor for detecting the valley is provided, and the biasing means for biasing the first moving plate in the forward direction is connected to the moving plate so as to press the pressing roller against the outer peripheral surface of the metal flat plate. Can be installed around the pressing roller, and the degree of freedom in layout is high.
[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]
2. Metal plate
3. Metal corrugated sheet
4 ... Honeycomb cylinder
30 ... Take-up shaft
53 ₁ ... Moving plate (first moving plate)
54 ₁ ... Pressing roller (first pressing roller)
56 ₁ ... First laser welding means
56 ₂ ... Second laser welding means
57 ₁ ... Burning means (first biasing air cylinder)
63 ··· Position sensor
64... Welding control unit
65... Rotation angle sensor (encoder)

Claims

Metal flat plate (2) and wound spirally a metal wave plate winding shaft (3) superposed to rotate (30), can and will be molded honeycomb tubular body (4), the take can up shaft By the irradiation laser of the first and second laser welding means (56 ₁ , 56 ₂ ) disposed in the circumferential direction of (30), a contact portion between the valley portion of the metal corrugated plate (3) and the metal flat plate (2), And the manufacturing apparatus of a honeycomb cylinder which welds the contact part of the peak part of a metal corrugated sheet (3), and a metal flat plate (2), respectively,
When the trough of the metal corrugated plate (3) contacts the metal flat plate (2) on the winding shaft (30), the position sensor (63) that detects the contact and outputs a signal, and the winding shaft (30) The rotation angle sensor (65) for detecting the rotation angle of) and the output signal of the position sensor (63) are received to operate the first laser welding means (56 ₁ ) and the output signal of the position sensor (63) is received. After that, the winding shaft (30) has the following angle β
β = α + θ
Where α: laser of the second laser welding means (56 ₂ ) from the laser irradiation direction line (L ₁ ) of the first laser welding means (56 ₁ ) measured along the rotation direction of the winding shaft (30). Angle to irradiation line (L ₂ )
θ: It is determined from the output signal of the rotation angle sensor (65) that the rotation angle is one half of the rotation angle of the winding shaft (30) corresponding to the two adjacent signal intervals output by the position sensor 63. And a welding control unit (64) for operating the second laser welding means (56 ₂ ).

In claim 1,
Arranged to be moved in the radial direction with respect to the moving plate (53 ₁₎ the winding shaft (30) for supporting the first laser welding means (56 _1), in its first moving plate (53 _1), wound A gear-type pressing roller (54 ₁ ) that can mesh with and press the outer peripheral surface of the metal corrugated plate (3) wound around the take-up shaft (30), and the metal corrugated plate (3) on the take-up shaft (30). The position sensor (63) for detecting a crest or a valley on the outer periphery of the pressing roller (54 ₁ ) when the valley portion of the metal plate and the metal flat plate (2) are in contact with each other, and the pressing roller (54 ₁ ) An urging means (57 ₁ ) for urging the first moving plate (53 ₁ ) in the forward direction to be pressed against the outer peripheral surface of the metal flat plate (2) is connected to the moving plate (53 ₁ ). Honeycomb cylinder manufacturing equipment.