JP3761044B2

JP3761044B2 - Foam processing equipment

Info

Publication number: JP3761044B2
Application number: JP15620096A
Authority: JP
Inventors: 正俊斎藤
Original assignee: Achilles Corp
Current assignee: Achilles Corp
Priority date: 1996-05-28
Filing date: 1996-05-28
Publication date: 2006-03-29
Anticipated expiration: 2016-05-28
Also published as: JPH09314500A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば建物の部材間に嵌め込まれる断熱発泡材にスリット溝を加工する加工装置の改良に関する。
【０００２】
【従来の技術】
従来、例えば建物の床、壁、天井等の断熱性を向上させるため根太、柱、垂木等の部材間に発泡体を嵌め込むような断熱施工技術が知られており、この際、根太、柱、垂木等の部材の間隔に多少の誤差があっても発泡体を密着状に嵌め込むことが出来るよう、例えば発泡体の長手方向に沿ってスリット溝を形成し、横幅方向に伸縮性を持たせるような技術が知られている。
そして、このようなスリット溝を成形する方法として、例えば機械加工によって切削加工したり、又は発熱したニクロム線の両端に張力をかけ、このニクロム線に発泡体の加工面を所定の深さまで接触させ、接触部を溶解させて溝を成形したりしている。
【０００３】
【発明が解決しようとする課題】
ところが、機械加工の場合は切粉による発塵等の環境上の問題があることに加えて、加工速度に制限があって生産性の面からも問題があり、また、ニクロム線で溝を成形する方法は、ニクロム線の線径をある程度以上にすることが出来ないため、溝幅に制限を受けるという問題があった。そして、溝幅を太くしようとすると、例えば糸鋸切断のように、溝の輪郭形状に沿って略コの字状に切断して中身の部分を切抜くように加工しなければならず、加工速度が遅くなるばかりでなく、切抜いた中身が溝に引掛かって円滑に排除されないことがあるため、例えば加工後、溝を下向きにして振動を与えたり、エアを吹き付けたりする等の排除工程が必要になるという問題もあった。
【０００４】
また、ニクロム線の線径が細くて撓みやすいため、例えば長いニクロム線の両端を引張りながら発泡体の表面に当接させ、所定の深さまで喰い込ませようとしても、中央部の喰い込み量が不足して精度的に問題が生じやすかった。更に、必要な伸縮度を得るためには、溝を多数形成しなければならないため、発泡体の強度が低下しがちになるという問題もあった。
そこで、発泡体の伸縮度を有効に確保した上で、迅速に且つ精度良く溝加工することが出来、しかも発泡体の強度低下を招くことのない加工装置が望まれていた。
【０００５】
【課題を解決するための手段】
上記課題を解決するため本発明は、請求項１において、発泡体の加工面に段付形状のスリット溝を加工するための加工装置において、発泡体をクランプする固定手段と、発泡体の加工面に向けて前進又は後退自在な支持体と、この支持体から前面側に張出して張設される段付溝形成用の熱線を設け、この段付溝形成用の熱線を、電源を接続して制御した電流を流すことにより電気抵抗によって発熱する金属パイプから構成し、該スリット溝を加工する際の熱線は１５０〜４００℃に加熱されるものとし、支持体の移動方向に沿って前後に複数配設するとともに、張出先端側の熱線の線径より、張出基端側の熱線の線径を太くするようにした。
【０００６】
ここで本発明における熱線とは、通電による電気抵抗によって発熱し、高温になる金属パイプとする。そして、支持体を前進させて熱線を発泡体に接触させ、張出先端側の熱線と張出基端側の熱線でそれぞれの発泡体の接触部を所定の深さまで溶解させれば、発泡体の加工面には、深層側の溝幅より表層側の溝幅が広い段付溝が短時間に形成される。そしてこのような段付形状のスリット溝によって、例えば断熱材の所定方向に伸縮性を付与するが、溝幅の広い表層部分では伸縮性を大きくすることが出来、また深層側では溝幅が狭いため、溝部附近の強度の低下を避けることが出来る。
【０００７】
また、前述のように、熱線とは、通電によって発熱し高温になる線であるため、熱線の線径が太くなればなるほど電気抵抗は大きくなり、一定温度に発熱するまでに時間を要し、消費電力も大きくなる。また通常の金属線であると線自体の剛性が不足し、発泡体の加工面に接触しスリット溝加工を行う場合、長さ方向において両端部のスリット溝が深く中央部のスリット溝が浅くなる傾向にあり、作業性の面で調整が容易でない。
従って、本発明の段付形状用に使用する熱線としては、内部に中空部を有するパイプ状の金属線とする。すなわち、パイプ状の金属線は、同じ太さの通常（中実）の金属線と比較して電気抵抗も小さく、一定温度に発熱するまでの時間も短時間で済み、剛性を増すことも容易に出来るので一定深さのスリット溝加工が可能となる。
ここで、金属パイプの材質は特に限定されないが、材質、肉厚、直径、長さ等によって電気抵抗及び発熱量が決定されるので、加工条件によって適宜選択できる。このような材質として、例えば、鉄−クロム系合金、ステンレス、チタン合金、銅、黄銅、タングステン、アルミニウム合金等が用いられ、特に鉄−クロム系合金、ステンレスがコスト、強度、発熱性等の面で好ましい。
【０００８】
また請求項２では、発泡体の表裏面に複数のスリット溝を加工し、このスリット溝のうち少なくとも１ヵ所のスリット溝を段付形状に加工するための加工装置において、発泡体をクランプする固定手段と、この発泡体を挟んで対向配置され且つ発泡体側に向けて前進又は後退自在な一対の支持体と、各支持体から前面側に張出して張設される各スリット溝形成用の複数の熱線を設け、この各スリット溝形成用の複数の熱線として、電源を接続して制御した電流を流すことにより電気抵抗によって発熱する金属パイプから構成し、該スリット溝を加工する際の熱線は１５０〜４００℃に加熱されるものとし、このうち段付形状に加工する部分の熱線として、前記支持体の移動方向に沿って前後に複数配設するとともに、張出先端側の熱線の線径より、張出基端側の熱線の線径を太くした。なお、段付溝形成用以外のスリット溝形成用の熱線においては、例えばニクロム線やステンレス線等が使用できる。
【０００９】
そして、このように各スリット溝形成用の複数の熱線と段付溝形成用の複数の熱線を同時に前進させて発泡体の両裏面に接触させ、接触部を所定の深さまで溶解させて各スリット溝と段付溝を同時に成形する。
そしてこのような複数のスリット溝と段付溝によって例えば断熱材の伸縮性を大きくする。
【００１０】
また請求項３では、支持体の前進・後退方向に対して斜め方向に前進・後退自在な斜め移動体を設け、この斜め移動体の前面には、発泡体の端面を斜めにカットする熱線を張出して張設した。そしてこの熱線によって発泡体の端面を斜めにカットし、例えば部材間に挿嵌する断熱材として使用する場合に、挿嵌側の横幅を短くして、部材間に嵌め込む作業の容易化を図る。
この際、例えば支持体と斜め支持体を同時に前進させれば、スリット溝加工及び段付溝加工と、端面カット加工を極めて短時間に行うことが出来る。
【００１１】
【発明の実施の形態】
本発明の実施の形態について添付した図面に基づき説明する。
ここで図１は本加工装置の斜視図、図２は同正面図、図３は同側面図である。
【００１２】
本発明の発泡体の加工装置は、例えば床下断熱用のスチレンフォーム製の板状発泡体の表裏面にスリット溝等を加工するにあたり、短時間で効率良く加工することが出来るようにされ、図１乃至図３に示すように、機枠１の高さ方向中間部に固定される発泡体Ｗの上面と下面に、長手方向に沿って複数のスリット溝を形成すると同時に、横幅方向の両側端面を斜めにカット出来るようにしている。
【００１３】
すなわち、この機枠１には、発泡体Ｗの横幅方向の両側面を一次的に挟みこんで位置決めする一次的位置決め手段２と、発泡体Ｗの上面と下面を上下に挟みこんでクランプする固定手段３と、発泡体Ｗの上面にスリット溝を加工する上面加工手段４と、発泡体Ｗの下面にスリット溝を加工する下面加工手段５と、発泡体Ｗの両側面を斜めに切断する左右一対の端面加工手段６、６が設けられており、前記一次的位置決め手段２によって発泡体Ｗを位置決めし、固定手段３で発泡体Ｗを上下に挟んで固定した後、必要に応じて一次的位置決め手段２を離脱させ、次いで上面加工手段４と下面加工手段５と端面加工手段６、６でほぼ同時に複数のスリット溝の加工と両端面の斜め切断を行うようにしている。
【００１４】
前記機枠１は、例えば市販のアルミ枠を使用し枠体状に形成している。そしてこのようなアルミ枠を使用することで、軽量化を図るとともに精度を高め、且つ安価に構成出来るようにしている。
【００１５】
前記一次的位置決め手段２は、図３にも示すように、機枠１の両側部の高さ方向中間部に固定される左右一対の位置決めシリンダユニット７、７と、この位置決めシリンダユニット７、７のシリンダロッド先端に取付けられ且つ長手方向に延出する位置決め板８、８を備えており、各位置決め板８の長手方向両端部附近には、図１に示すようなガイドロッド１０、１０を取付けている。そしてこのガイドロッド１０、１０を、機枠１の両側部に固着したガイド部材１１、１１によってガイドしている。
【００１６】
そして、前記位置決めシリンダユニット７、７に、例えばエア等の圧力流体を供給して位置決め板８、８を進退動自在にし、発泡体Ｗの両端部の位置を規制して横幅方向の位置決めを行うようにしている。
【００１７】
前記固定手段３は、発泡体Ｗの上下面を挟持する上下一対のクランプ治具１２、１２を備えており、各クランプ治具１２は、機枠１の上下の幅方向略中央部に取付けられた一対の固定シリンダユニット１３、１３と、この固定シリンダユニット１３、１３のシリンダロッド先端に取付けられる３枚の固定板１５ａ、１５ｂ、１５ｂを備えており、これら固定板１５ａ、１５ｂ、１５ｂは長手方向に延出するとともに、後述するように横幅方向に拡縮自在にされている。そして、前記シリンダロッド１３ａは中央の固定板１５ａに連結されている。
【００１８】
また、この中央の固定板１５ａの長手方向両端部附近には、図２に示すように、ガイドロッド１６、１６が取付けられており、このガイドロッド１６、１６は、機枠１の上下部に取付けられたガイド部材１７、１７によってガイドされている。
【００１９】
そして、固定シリンダユニット１３、１３に例えばエア等の圧力流体を供給して固定板１５ａ、１５ｂ、１５ｂを上下動させ、発泡体Ｗを上下に挟みこんで固定するようにしている。
【００２０】
前記上面加工手段４は、機枠１の上部四隅に取付けられて下方に延出する上部シリンダユニット１８、…と、この上部シリンダユニット１８、…の各シリンダロッドの下端部に結合される矩形枠体状の上部支持体２０と、この上部支持体２０の短辺側から下方に向けて張出す複数の熱線取付部材２１ａ、２１ｂ、…を備えており、対向する短辺同士の熱線取付部材２１ａ−２１ａ、２１ｂ−２１ｂ、…間には、パイプ状の熱線ｍ、ｎ、…が張設されている。
【００２１】
すなわち、前記熱線取付部材２１ａ、２１ｂ、…は、図２のＡ−Ａ矢視図である図４にも示すように、幅方向の両端部寄りに設けられ、外側寄りの熱線取付部材２１ａ、…と、内側寄りの熱線取付部材２１ｂ、…がそれぞれ４ヵ所づつ設けられるとともに、外側寄りの熱線取付部材２１ａ−２１ａ間には、長手方向に沿って上下に２本の熱線ｍ、ｎが張設され（図２）、内側寄りの熱線取付部材２１ｂ−２１ｂ間には、長手方向に沿って１本の熱線ｍが張設されている。
【００２２】
そして実施形態では、熱線取付部材２１ａの張出先端側の熱線ｍを線径１mmのステンレスパイプとし、張出基端側の熱線ｎを線径３mmのステンレスパイプとして、熱線ｍの線径より熱線ｎの線径の方を太くしている。そして、これら熱線ｍ、ｎには不図示の電源を接続して制御した電流を流すことが出来るようにしており、所定の温度に加熱出来るようにしている。
【００２３】
前記下面加工手段５は、機枠１の下部四隅に取付けられて上方に延出する下部シリンダユニット２２、…と、この下部シリンダユニット２２、…の各シリンダロッドの上端部に結合される矩形枠体状の下部支持体２３と、この下部支持体２３の短辺側から上方に向けて張出す複数の熱線取付部材２１ｃ、…を備えており、対向する短辺同士の熱線取付部材２１ｃ−２１ｃ、２１ｃ−２１ｃ間には、熱線ｍ、ｍが張設されている
【００２４】
すなわち、前記熱線取付部材２１ｃ、…は、図２のＢ−Ｂ矢視図である図５にも示すように、幅方向の両端部寄りで且つ前記上部側の熱線取付部材２１ａ、２１ｂの中間に位置するように配置され、また対向する熱線取付部材２１ｃ−２１ｃ間には、１本の熱線ｍが張設されている。
そして実施形態では、この熱線ｍは、前記熱線ｍと同径の１mmのステンレスパイプ製としている。
【００２５】
ところで、前記熱線取付部材２１ａ、２１ｂ、２１ｃ、…は、いずれも横幅方向に沿って移動可能としており、熱線ｍ、ｎ、…の横幅間隔を自在に変更出来るようにしている。
すなわち、図６に示す熱線取付部材２１ｃ、…を例にとって説明すると、例えば熱線取付部材２１ｃ、…をスライド部２４、２４に沿って摺動自在にし、熱線取付部材２１ｃ、…をスライドさせて熱線ｍの幅を変更する。また他の熱線取付部材２１ａ、２１ｂも同様に横幅調整自在とされている。
【００２６】
また、各熱線ｍ、ｎ、…は、張力を自在に調整出来るようにしているが、これも図６に示す熱線取付部材２１ｃ、…を例にとって説明すると、例えば熱線ｍの一端側に取付けた係止部材２５を一方側の熱線取付部材２１ｃに係止し、熱線ｍの他端側を他方側の熱線取付部材２１ｃの展張シリンダ２６のシリンダロッド先端でクランプし、展張シリンダ２６を作動させて熱線ｍの張力を調整する。また他の熱線取付部材２１ａ、２１ｂの熱線ｍ、ｎも同様に張力調整自在としている。
【００２７】
前記端面加工手段６は、図３に示すように、上部支持体２０の左右のブラケット２７、２７に取付けられる斜めシリンダユニット２８、…と、このシリンダロッド先端に取付けられ且つ長手方向に延出する斜め移動体３０、３０を備え、この斜め移動体３０の両端部には、斜め下方に張出す熱線取付部３０ａ、３０ａが形成されるとともに、この熱線取付部３０ａ、３０ａ間に熱線ｈが張設されている。そして、上部支持体２０を降下させると斜めシリンダユニット２８、…も一緒に降下して熱線ｈ、ｈが発泡体Ｗ上面に近接し、斜めシリンダユニット２８、…を作動させると、熱線ｈ、ｈが発泡体Ｗの端面を斜めに貫いて下方に飛出すようにしている。
【００２８】
ところで、前記固定板１５ａ、１５ｂ、１５ｂは、図７に示すように、例えば中央の固定板１５ａに複数のクランプ幅変更用のシリンダユニット３１、…を埋設しており、各シリンダロッド先端に両サイドの固定板１５ｂ、１５ｂを取付けている。そして各シリンダユニット３１、…の作動によって各固定板１５ａ、１５ｂ、１５ｂ間の間隔を変更出来るようにしている。因みに図７の鎖線は各固定板１５ａ、１５ｂ、１５ｂ間隔を広げた時の状態図である。
【００２９】
以上のような加工装置の作動概要等について説明する。
スチレンフォーム製の発泡体Ｗを、例えば床下断熱材として根太間に挿嵌する場合、発泡体Ｗの横幅は根太の規定間隔より少し長めに切断されている。すなわち、一般的に、根太等の部材の間隔には、ある程度のバラツキがあるといわれており、これらのバラツキの如何に拘らず密着状に嵌合させるためである。従って、横幅方向に所定の縮み量を確保してバラツキを吸収させる必要がある。
また、スリット溝の溝幅は、隙間として残った場合に断熱効果が低下し、対流が生じて熱欠損を招くため、あまり広くすることは好ましくなく、また、スリット溝の数も、断熱効果、対流防止等の観点から出来るだけ少ない方が好ましい。
【００３０】
そこで、本実施形態では、上面側の２本のスリット溝と下面側の１本のスリット溝を互い違いに形成し、且つ、下面側の端面を所定幅でカットして下面側の横幅を狭くするようにしている。この際、上面側の１本のスリット溝を段付形状にして表層側の溝幅を幅広にすることで、上面側での必要な伸縮度を確保するようにしている。
また、横幅方向の両端面を斜めにカットして下面側の幅を狭めれば、根太等に挿嵌する際に嵌め込みやすくすることが出来る。
【００３１】
そこで、予め所定の寸法に切出した発泡体Ｗを機枠１の中間部にセットし、一次的位置決め手段２の位置決めシリンダユニット７、７を作動させて、発泡体Ｗの両側端面を挟み込んで横幅方向の位置決めを行い、次いで固定手段３の固定板１５ａ、１５ｂ、１５ｂによって発泡体Ｗの上下面を挟んで固定する。そして、発泡体Ｗが固定されると、必要に応じて位置決めシリンダユニット７、７を後退させ位置決め板８、８を離脱させる。
【００３２】
次いで、上面加工手段４の上部シリンダユニット１８、…作動させて上部支持体２０を所定ストローク降下させるとほぼ同時に、下面加工手段５の下部シリンダユニット２２、…を作動させて下部支持体２３を所定ストローク上昇させると、各熱線ｍ、ｎ、…が発泡体Ｗに接触して所定深さで接触部が溶解し、上面側外側の段付溝成形部では、図８に示すように、線径の細い熱線ｍで深層側の溝幅の狭い溝ａが形成され、線径の太い熱線ｎで表層側の溝幅の広い溝ｂが成形される。また、内側のスリット溝成形部では、熱線ｍによって一定溝幅のスリット溝ｄが形成される。
また下面側にも、熱線ｍによって一定溝幅のスリット溝ｃが形成される。
【００３３】
因みに、スチレンフォームの溶解温度は７０℃前後であるため、例えば１５０〜４００℃程度に加熱した熱線ｍ、ｎを接触させると、接触部は殆ど接触と同時に溶解して溝ａ〜ｄが成形される。また、例えば線径１mmの熱線ｍであれば、約２mm程度の溝幅の溝が形成され、線径３mmの熱線ｎであれば、約４mm程度の溝幅の溝が形成される。
【００３４】
ところで、前記上部支持体２０が降下すると、ほぼ同時に端面加工手段６の斜め移動体３０を斜め下方に移動させ、図８に示すように、熱線ｈ、ｈによって幅方向両端部を斜めにカットしてテーパ部ｔを形成するようにしている。このため、発泡体Ｗの下面の横幅は、上面の横幅に較べて狭くなる。
尚、以上のような一連の加工によって、発泡体Ｗの両側端部附近には、溝ａ〜ｄとテーパ部ｔ、ｔが形成されるが、これら一連の溝加工と端面加工に要する時間は、例えば数１０秒程度であり、極めて短時間に完了する。
【００３５】
また、熱線ｍ、ｎが金属パイプであるため、ニクロム線等に較べて線径を太くすることが出来、溝幅の広い溝を短時間に成形出来るとともに、剛性を高めることが出来るため、加工精度が良い。
また、このような段付形状の溝として、表層側の溝幅を広く深層側の溝幅を狭くすれば、表層側の伸縮性を高めることが出来るとともに溝部附近の強度低下を防止出来る。
【００３６】
尚、本発明は、発泡体Ｗの上下面にスリット溝を形成し、そのうち１ヵ所のスリット溝を段付形状にするようにしているが、全てのスリット溝を段付形状に加工する時に適用することも可能であり、また、片面側にだけスリット溝を形成し、そのうち少なくとも１ヵ所を段付形状にするような場合、又は１ヵ所だけに段付溝を形成する場合等にも適用出来ることはいうまでもない。
【００３７】
また、上記実施形態は、例示であり、本発明の特許請求の範囲に記載された技術的思想と実質的に同一な構成を有し、同様な作用効果を奏するものは、いかなるものであっても本発明の技術的範囲に包含されることも勿論である。
【００３８】
【発明の効果】
以上のように本発明は、請求項１のように、発泡体を固定手段でクランプし、この発泡体の加工面に向けて前進又は後退自在な支持体に段付溝形成用の熱線を設け、この段付溝形成用の熱線として、支持体の移動方向に沿って線径の異なる複数の熱線を前後に配設するようにしたため、段付形状のスリット溝を極めて短時間に成形出来る。この際、熱線を金属パイプとしているため、溝幅の広いスリット溝を加工出来るとともに、加工精度を向上させることが出来る。
また請求項２のように、発泡体の表裏面に複数のスリット溝を加工する際に段付溝成形用の熱線構造を採用すれば、すべての溝成形を簡単に短時間に行うことが出来る。
また請求項３のように、斜め移動体に設けた熱線で端面を斜めにカットする作業と組合わせれば、一連の作業を一層効率的に行うことが出来る。
【図面の簡単な説明】
【図１】本加工装置の斜視図
【図２】同正面図
【図３】同側面図
【図４】図２のＡ−Ａ矢視図
【図５】図２のＢ−Ｂ矢視図
【図６】熱線の張設方法等を説明するための説明図
【図７】固定具の説明図
【図８】加工された発泡体の端部周辺の縦断面図
【符号の説明】
１…機枠、２…固定手段、１２…クランプ治具、２０…上部支持体、２１ａ、２１ｂ、２１ｃ…熱線取付部材、２３…下部支持体、３０…斜め移動体、ｍ、ｎ、ｈ…熱線。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a processing apparatus that processes a slit groove in a heat insulating foam material fitted between members of a building, for example.
[0002]
[Prior art]
Conventionally, for example, in order to improve heat insulation properties such as floors, walls, and ceilings of buildings, heat insulation construction technology is known in which foam is inserted between members such as joists, pillars, rafters, etc. For example, a slit groove is formed along the longitudinal direction of the foam so that the foam can be fitted in close contact even if there is some error in the spacing between the members such as the rafters, and it has elasticity in the lateral width direction. The technology to make it known is known.
As a method of forming such slit grooves, for example, cutting is performed by machining, or tension is applied to both ends of the heated nichrome wire, and the processed surface of the foam is brought into contact with the nichrome wire to a predetermined depth. The contact portion is melted to form a groove.
[0003]
[Problems to be solved by the invention]
However, in the case of machining, in addition to environmental problems such as dust generation due to chips, there is a problem in terms of productivity due to the limited processing speed, and grooves are formed with nichrome wire. However, this method has a problem that the groove diameter is limited because the diameter of the nichrome wire cannot be increased to a certain extent. If the groove width is to be increased, it must be processed so as to cut into a substantially U-shape along the groove contour shape, for example, with a saw blade, and to cut out the contents. In addition to slowing down, the cut-out contents may get caught in the groove and may not be removed smoothly.For example, after processing, a removal process such as applying vibration with the groove facing down or blowing air is required. There was also a problem of becoming.
[0004]
In addition, because the wire diameter of the nichrome wire is thin and easy to bend, for example, even if it is brought into contact with the surface of the foam while pulling both ends of the long nichrome wire, Insufficient accuracy was likely to occur. Furthermore, in order to obtain a necessary degree of expansion / contraction, a large number of grooves must be formed, and thus there is a problem that the strength of the foam tends to be lowered.
Therefore, there has been a demand for a processing apparatus that can quickly and accurately groove the foam while ensuring effective expansion and contraction of the foam and that does not cause a decrease in the strength of the foam.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a processing apparatus for processing a stepped slit groove on a processing surface of a foam according to claim 1, a fixing means for clamping the foam, and a processing surface of the foam A support body that can be moved forward or backward toward the surface, and a heat wire for forming a stepped groove that is extended and extended from the support body to the front side, and the power wire for forming the stepped groove is connected to a power source. It is composed of a metal pipe that generates heat by electric resistance by flowing a controlled current, and the heat ray when processing the slit groove is heated to 150 to 400 ° C. In addition to the arrangement, the diameter of the heat ray on the overhanging proximal end side is made larger than the diameter of the heat ray on the overhanging distal end side.
[0006]
Here, the heat ray in the present invention is a metal pipe that generates heat due to electric resistance caused by energization and becomes high temperature . Then, if the support is advanced to bring the heat rays into contact with the foam, and the contact portions of the respective foams are dissolved to a predetermined depth by the heat rays on the projecting distal end side and the heat rays on the projecting proximal end side, the foam is obtained. On the processed surface, a stepped groove having a groove width on the surface layer side wider than the groove width on the deep layer side is formed in a short time. And, by such a stepped slit groove, for example, elasticity is imparted in a predetermined direction of the heat insulating material, but the elasticity can be increased in the surface layer portion having a wide groove width, and the groove width is narrow on the deep layer side. Therefore, it is possible to avoid a decrease in strength near the groove.
[0007]
In addition, as described above, the hot wire is a wire that generates heat and becomes high temperature when energized, so that the larger the wire diameter of the hot wire, the greater the electrical resistance, and it takes time to generate heat at a constant temperature. Power consumption also increases. In addition, when the metal wire is normal, the wire itself has insufficient rigidity, and when the slit groove processing is performed in contact with the processed surface of the foam, the slit groove at both ends is deep in the length direction and the central slit groove is shallow. There is a tendency, adjustment is not easy in terms of workability.
Accordingly, the heat wire used for the stepped shape of the present invention is a pipe-like metal wire having a hollow portion inside. In other words, the pipe-shaped metal wire has a smaller electrical resistance than a normal (solid) metal wire of the same thickness, requires only a short time to generate heat at a constant temperature, and can easily increase rigidity. Therefore, slit grooves with a certain depth can be processed.
Here, the material of the metal pipe is not particularly limited, but the electrical resistance and the heat generation amount are determined depending on the material, the thickness, the diameter, the length, and the like, and can be appropriately selected depending on the processing conditions. As such a material, for example, iron-chromium alloy, stainless steel, titanium alloy, copper, brass, tungsten, aluminum alloy, etc. are used. Particularly, iron-chromium alloy, stainless steel is cost, strength, exotherm, etc. Is preferable.
[0008]
According to a second aspect of the present invention, in the processing apparatus for processing a plurality of slit grooves on the front and back surfaces of the foam and processing at least one slit groove of the slit grooves into a stepped shape, fixing the foam is clamped Means, a pair of supports disposed oppositely across the foam and capable of moving forward or backward toward the foam, and a plurality of slit grooves forming extending from the respective supports to the front side. A heat wire is provided, and a plurality of heat wires for forming each slit groove is constituted by a metal pipe that generates heat by electric resistance by flowing a current controlled by connecting a power source. shall be heated to to 400 ° C., as heat rays of the portion processed among the stepped shape, as well as arranging a plurality of back and forth along the moving direction of the support, the wire diameter of the hot wire of the projecting distal end Ri was thicker wire diameter of heat rays ChoIzurumoto end. In addition, in the heat wire for forming slit grooves other than for forming stepped grooves, for example, a nichrome wire, a stainless steel wire or the like can be used.
[0009]
In this way, the plurality of heat wires for forming each slit groove and the plurality of heat wires for forming the stepped groove are simultaneously advanced and brought into contact with both back surfaces of the foam, and the contact portions are melted to a predetermined depth. A groove and a stepped groove are formed simultaneously.
For example, the stretchability of the heat insulating material is increased by such a plurality of slit grooves and stepped grooves.
[0010]
According to a third aspect of the present invention, there is provided an oblique moving body that can be moved forward and backward in an oblique direction with respect to the forward and backward directions of the support body. Overhang and stretched. And when the end face of the foam is cut obliquely by this heat ray and used as, for example, a heat insulating material fitted between the members, the lateral width on the insertion side is shortened to facilitate the work of fitting between the members. .
At this time, for example, if the support and the oblique support are advanced simultaneously, the slit groove processing, the stepped groove processing, and the end face cutting processing can be performed in a very short time.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is a perspective view of the present processing apparatus, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof.
[0012]
The foam processing apparatus of the present invention can be efficiently processed in a short time when processing slit grooves or the like on the front and back surfaces of a plate-like foam made of styrene foam for underfloor insulation, for example. As shown in FIG. 1 to FIG. 3, a plurality of slit grooves are formed along the longitudinal direction on the upper and lower surfaces of the foam W fixed to the intermediate portion in the height direction of the machine frame 1, and at the same time, both end surfaces in the lateral width direction Can be cut diagonally.
[0013]
That is, in this machine frame 1, primary positioning means 2 for temporarily sandwiching and positioning both side surfaces of the foam W in the lateral width direction, and fixing by clamping the top and bottom surfaces of the foam W up and down. Means 3, upper surface processing means 4 for processing slit grooves on the upper surface of the foam W, lower surface processing means 5 for processing slit grooves on the lower surface of the foam W, and left and right sides for obliquely cutting both side surfaces of the foam W A pair of end face processing means 6 and 6 are provided, the foam W is positioned by the primary positioning means 2, the foam W is sandwiched and fixed by the fixing means 3, and then primary as necessary. The positioning means 2 is removed, and then the upper surface processing means 4, the lower surface processing means 5 and the end surface processing means 6 and 6 process a plurality of slit grooves and obliquely cut both end surfaces almost simultaneously.
[0014]
The machine frame 1 is formed in a frame shape using, for example, a commercially available aluminum frame. By using such an aluminum frame, the weight can be reduced, the accuracy can be improved, and the structure can be made inexpensively.
[0015]
As shown in FIG. 3, the primary positioning means 2 includes a pair of left and right positioning cylinder units 7 and 7 that are fixed to intermediate portions in the height direction on both sides of the machine frame 1, and the positioning cylinder units 7 and 7. 1 is provided in the vicinity of both end portions of each positioning plate 8 in the longitudinal direction. The guide rods 10 and 10 shown in FIG. ing. The guide rods 10 and 10 are guided by guide members 11 and 11 fixed to both sides of the machine casing 1.
[0016]
Then, a pressure fluid such as air is supplied to the positioning cylinder units 7 and 7 so that the positioning plates 8 and 8 can move forward and backward, and the positions of both ends of the foam W are regulated to perform positioning in the lateral width direction. I am doing so.
[0017]
The fixing means 3 includes a pair of upper and lower clamp jigs 12, 12 that sandwich the upper and lower surfaces of the foam W, and each clamp jig 12 is attached to a substantially central part in the vertical direction of the machine frame 1. A pair of fixed cylinder units 13, 13 and three fixed plates 15a, 15b, 15b attached to the tip of the cylinder rod of the fixed cylinder units 13, 13 are provided. These fixed plates 15a, 15b, 15b In addition to extending in the direction, it can be expanded and contracted in the width direction as will be described later. The cylinder rod 13a is connected to a central fixing plate 15a.
[0018]
Further, as shown in FIG. 2, guide rods 16 and 16 are attached in the vicinity of both ends in the longitudinal direction of the central fixing plate 15a. The guide rods 16 and 16 are attached to the upper and lower portions of the machine frame 1. Guided by the attached guide members 17 and 17.
[0019]
Then, a fixed fluid such as air is supplied to the fixed cylinder units 13 and 13 to move the fixed plates 15a, 15b and 15b up and down, and the foam W is sandwiched up and down to be fixed.
[0020]
The upper surface processing means 4 is attached to the upper four corners of the machine frame 1 and extends downward, and a rectangular frame coupled to the lower end of each cylinder rod of the upper cylinder unit 18. A body-like upper support 20 and a plurality of heat ray attachment members 21a, 21b,... Projecting downward from the short side of the upper support 20 are provided. Pipe-like heat rays m, n,... Are stretched between -21a, 21b-21b,.
[0021]
That is, the heat ray attachment members 21a, 21b,... Are provided near both ends in the width direction as shown in FIG. ... and four hot-wire mounting members 21b on the inner side are provided, and two hot wires m and n are stretched vertically along the longitudinal direction between the outer-side hot-wire mounting members 21a-21a. 1 (FIG. 2), between the heat wire attachment members 21b-21b closer to the inside, one heat wire m is stretched along the longitudinal direction.
[0022]
In the embodiment, the heat ray m on the protruding distal end side of the heat ray attachment member 21a is a stainless steel pipe having a wire diameter of 1 mm, and the heat wire n on the protruding proximal end side is a stainless steel pipe having a wire diameter of 3 mm. The wire diameter of n is made thicker. A power source (not shown) is connected to these heat wires m and n so that a controlled current can flow, so that they can be heated to a predetermined temperature.
[0023]
The lower surface processing means 5 is attached to the lower four corners of the machine frame 1 and extends upward, and a rectangular frame coupled to the upper ends of the cylinder rods of the lower cylinder units 22. It has a body-like lower support 23 and a plurality of heat ray attachment members 21c extending upward from the short side of the lower support 23, and the heat ray attachment members 21c-21c between the opposing short sides are provided. , 21c-21c, hot wires m and m are stretched.
That is, as shown in FIG. 5 which is a view taken along the line BB in FIG. 2, the heat ray attachment members 21c,... Are intermediate between the heat ray attachment members 21a, 21b on the upper side and near both ends. A single hot wire m is stretched between the opposing hot wire attachment members 21c-21c.
In the embodiment, the hot wire m is made of a 1 mm stainless pipe having the same diameter as the hot wire m.
[0025]
By the way, the heat ray attachment members 21a, 21b, 21c,... Can be moved along the horizontal width direction so that the horizontal width intervals of the heat rays m, n,.
6 is taken as an example. For example, the heat ray attachment members 21c,... Are slidable along the slide portions 24, 24, and the heat ray attachment members 21c,. Change the width of m. The other heat wire attachment members 21a and 21b are also adjustable in width.
[0026]
Each of the heat rays m, n,... Can be freely adjusted in tension, but this is also explained by taking the heat wire attachment member 21c,... Shown in FIG. The locking member 25 is locked to the one side heat ray mounting member 21c, the other end side of the heat ray m is clamped at the tip of the cylinder rod of the extension cylinder 26 of the other side heat ray attachment member 21c, and the extension cylinder 26 is operated. Adjust the tension of the hot wire m. In addition, the heat rays m and n of the other heat ray attachment members 21a and 21b are similarly adjustable in tension.
[0027]
As shown in FIG. 3, the end face processing means 6 is attached to the left and right brackets 27, 27 of the upper support 20, the oblique cylinder units 28,..., And is attached to the tip of the cylinder rod and extends in the longitudinal direction. The slant moving bodies 30 and 30 are provided, and heat wire mounting portions 30a and 30a projecting diagonally downward are formed at both ends of the slant moving body 30, and a heat wire h is stretched between the heat wire mounting portions 30a and 30a. It is installed. When the upper support 20 is lowered, the oblique cylinder units 28,... Are also lowered together so that the heat rays h, h are close to the upper surface of the foam W, and when the oblique cylinder units 28,. However, it penetrates the end face of the foam W obliquely and jumps downward.
[0028]
By the way, as shown in FIG. 7, the fixing plates 15a, 15b, 15b have a plurality of cylinder units 31 for changing the clamp width embedded in the central fixing plate 15a, for example. Side fixing plates 15b and 15b are attached. The intervals between the fixed plates 15a, 15b, 15b can be changed by the operation of the cylinder units 31,. 7 is a state diagram when the intervals between the fixing plates 15a, 15b, and 15b are widened.
[0029]
The outline | summary etc. of operation | movement of the above processing apparatuses are demonstrated.
When the foam W made of styrene foam is inserted between the joists as, for example, an underfloor heat insulating material, the width of the foam W is cut slightly longer than the prescribed interval of the joists. That is, it is generally said that there is a certain degree of variation in the interval between members such as joists, and this is because they are fitted in close contact regardless of these variations. Therefore, it is necessary to secure a predetermined amount of shrinkage in the lateral width direction to absorb the variation.
In addition, the groove width of the slit groove, when left as a gap, the heat insulation effect is reduced, convection occurs and causes heat loss, so it is not preferable to make it too wide, and the number of slit grooves is also a heat insulation effect, From the viewpoint of preventing convection, it is preferable that the amount be as small as possible.
[0030]
Therefore, in this embodiment, two slit grooves on the upper surface side and one slit groove on the lower surface side are formed alternately, and the end surface on the lower surface side is cut with a predetermined width to narrow the lateral width on the lower surface side. I am doing so. At this time, one slit groove on the upper surface side is formed in a stepped shape so that the groove width on the surface layer side is widened, thereby ensuring the necessary degree of expansion and contraction on the upper surface side.
Further, if both end surfaces in the lateral width direction are cut obliquely to reduce the width on the lower surface side, it is possible to facilitate the fitting when inserting into a joist or the like.
[0031]
Therefore, the foam W cut in advance to a predetermined size is set in the middle portion of the machine frame 1 and the positioning cylinder units 7 and 7 of the primary positioning means 2 are operated to sandwich the both end faces of the foam W and Positioning in the direction is performed, and then the upper and lower surfaces of the foam W are fixed by fixing plates 15a, 15b, and 15b of the fixing means 3. Then, when the foam W is fixed, the positioning cylinder units 7 and 7 are moved backward as necessary to release the positioning plates 8 and 8.
[0032]
Next, when the upper cylinder unit 18 of the upper surface processing means 4 is operated to lower the upper support 20 by a predetermined stroke, the lower cylinder unit 22 of the lower surface processing means 5 is operated and the lower support 23 is predetermined at almost the same time. When the stroke is raised, each heat ray m, n,... Comes into contact with the foam W and the contact portion melts at a predetermined depth, and in the stepped groove forming portion on the upper surface side outside, as shown in FIG. A narrow groove a on the deep layer side is formed by the thin heat wire m, and a wide groove b on the surface layer side is formed by the heat wire n having a large wire diameter. In the inner slit groove forming portion, a slit groove d having a constant groove width is formed by the heat ray m.
A slit groove c having a constant groove width is also formed on the lower surface side by the heat ray m.
[0033]
Incidentally, since the melting temperature of styrene foam is around 70 ° C., for example, when the heat rays m and n heated to about 150 to 400 ° C. are brought into contact with each other, the contact portion melts almost simultaneously with the contact and the grooves a to d are formed. The For example, if the heat wire m has a wire diameter of 1 mm, a groove having a groove width of about 2 mm is formed. If the heat wire n has a wire diameter of 3 mm, a groove having a groove width of about 4 mm is formed.
[0034]
By the way, when the upper support 20 is lowered, the oblique moving body 30 of the end face processing means 6 is moved obliquely downward almost simultaneously, and both ends in the width direction are obliquely cut by the heat rays h and h as shown in FIG. Thus, the taper portion t is formed. For this reason, the width of the lower surface of the foam W is narrower than the width of the upper surface.
By the series of processes as described above, the grooves a to d and the tapered parts t and t are formed in the vicinity of both end portions of the foam W. The time required for these series of groove processes and end face processes is as follows. For example, it takes about several tens of seconds and is completed in a very short time.
[0035]
In addition, since the heat wires m and n are metal pipes, the wire diameter can be increased compared to nichrome wires, etc., and a groove with a wide groove width can be formed in a short time and the rigidity can be increased. Good accuracy.
In addition, if the groove width on the surface layer side is wide and the groove width on the deep layer side is narrow as such a stepped groove, the stretchability on the surface layer side can be enhanced and the strength reduction near the groove portion can be prevented.
[0036]
In the present invention, slit grooves are formed on the upper and lower surfaces of the foam W, and one of the slit grooves is formed into a stepped shape. However, the present invention is applied when all the slit grooves are processed into a stepped shape. It is also possible to form a slit groove only on one side and form a stepped shape at least one of them, or to form a stepped groove only at one place. Needless to say.
[0037]
Further, the above-described embodiment is an example, and any one having substantially the same configuration as the technical idea described in the claims of the present invention and having the same operational effect is any type. Of course, these are also included in the technical scope of the present invention.
[0038]
【The invention's effect】
As described above, according to the present invention, as in claim 1, the foam is clamped by the fixing means, and the heating wire for forming the stepped groove is provided on the support that can be moved forward or backward toward the processing surface of the foam. As the heat rays for forming the stepped grooves, a plurality of heat rays having different wire diameters are arranged in the front and rear along the moving direction of the support, so that the stepped slit grooves can be formed in a very short time. At this time, since the heat ray is a metal pipe, a slit groove having a wide groove width can be processed, and the processing accuracy can be improved.
In addition, when a plurality of slit grooves are formed on the front and back surfaces of the foam as in claim 2, if a heat ray structure for stepped groove formation is employed, all groove formation can be easily performed in a short time. .
Further, as in claim 3, when combined with the work of cutting the end face obliquely with a heat ray provided on the obliquely movable body, a series of work can be performed more efficiently.
[Brief description of the drawings]
1 is a perspective view of the present processing apparatus. FIG. 2 is a front view of the processing apparatus. FIG. 3 is a side view of the processing apparatus. FIG. 4 is a view taken in the direction of arrows AA in FIG. FIG. 6 is an explanatory diagram for explaining a method of stretching a heat ray, etc. FIG. 7 is an explanatory diagram of a fixture. FIG. 8 is a longitudinal sectional view around an end of a processed foam.
DESCRIPTION OF SYMBOLS 1 ... Machine frame, 2 ... Fixing means, 12 ... Clamp jig, 20 ... Upper support body, 21a, 21b, 21c ... Heat ray attachment member, 23 ... Lower support body, 30 ... Diagonal moving body, m, n, h ... Hot wire.

Claims

A processing apparatus for processing a slit groove having a stepped shape on a processing surface of a foam, and a fixing means for clamping the foam, and a support that can be moved forward or backward toward the processing surface of the foam. The heat source for forming a stepped groove that is extended from the support body to the front side is provided, and the heat wire for forming the stepped groove is heated by an electric resistance by flowing a controlled current by connecting a power source. The heat ray at the time of processing the slit groove is heated to 150 to 400 ° C., and a plurality of heat rays are arranged in the front and rear along the moving direction of the support, and A foam processing apparatus characterized in that the wire diameter of the heat ray on the overhanging proximal end side is made larger than the wire diameter.

A processing device for processing a plurality of slit grooves on the front and back surfaces of the foam, and processing at least one of the slit grooves into a stepped shape, the fixing means for clamping the foam, A pair of supports that are opposed to each other with the foam sandwiched therebetween and are capable of moving forward or backward toward the foam side, and a plurality of heat rays for forming each slit groove extending from each support to the front side. The plurality of heat wires for forming each slit groove are composed of metal pipes that generate heat by electric resistance by flowing a current controlled by connecting a power source, and the heat wires at the time of processing the slit grooves are 150 to 400 ° C. A plurality of the heat rays of the portion to be processed into a stepped shape are arranged in the front and rear along the moving direction of the support, and from the wire diameter of the heat ray on the overhang tip side, the overhang base end Side heat wire diameter Foam processing equipment being characterized in that thickened.

3. The foam processing apparatus according to claim 1, wherein the apparatus includes an obliquely movable body that is movable forward and backward in an oblique direction with respect to the forward and backward directions of the support, and the obliquely movable body. The foam processing apparatus is characterized in that a heat ray that obliquely cuts the end face of the foam is stretched and stretched on the front side of the foam.