JP2006512221A - 熱可塑性プラスチック成形品を溶接、特に3次元成形品を輪郭溶接するための方法と装置 - Google Patents
熱可塑性プラスチック成形品を溶接、特に3次元成形品を輪郭溶接するための方法と装置 Download PDFInfo
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- JP2006512221A JP2006512221A JP2004562684A JP2004562684A JP2006512221A JP 2006512221 A JP2006512221 A JP 2006512221A JP 2004562684 A JP2004562684 A JP 2004562684A JP 2004562684 A JP2004562684 A JP 2004562684A JP 2006512221 A JP2006512221 A JP 2006512221A
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- welding
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Abstract
Description
特許文献4は、本願発明に最も関連しており、レーザー光エネルギーを用いて少なくとも2つのプラスチック材料を溶接する方法が記載されている。そうするにあたり、補助エネルギーが結合範囲に供給され、当該接合範囲にある少なくとも1つの第1材料の粒子を1つ又は幾つかの第2材料に可逆的に転換する。これら第2材料はそっくりそのまま第1材料よりもより強くレーザー放射を吸収し、レーザーエネルギー吸収に関してそれ自体決定的に重要な材料が十分な品質で溶接可能になる。
他の好適な実施態様に一致して、本発明は請求項8及び16によれば、2次放射及び/又はレーザー溶接ビームを、これらを透過する挟持装置によって、特に挟持ローラによって適用する。これは、挟持装置が実際に活性化している溶接範囲に直接作用し、それによってコンポーネント公差が最適に補償され、対応して結合ギャップが最小に減らされるる利点を伴う。
処理ヘッド4は挟持ローラ10と共に輪郭Kに沿って送り方向13に動き、2つの接合相手1,2に作用して、その上面相手1は夫々の溶接範囲18において先行する2次放射によって局部的に加熱される。その結果として、上面相手1を始めに溶融するため、遅れたレーザー溶接ビーム3による2つの相手1,2の一体的な結合を得るために、(下面)吸収接合相手2は少ない熱エネルギーで足りる。図3と図4は2次放射15の上記効果を説明する。図3は、2次放射のないポリエチレン(PE)の従来のレーザー溶接プロセスの模擬温度領域を示す。図3で白色範囲として示された溶融相は主に下面の吸収接合相手2に拡張し、上面の透過接合相手1のその拡張は劣る。これは、プロセス窓が非常に狭く、下面接合相手1から上面接合相手2への熱移動の状態が僅かでも悪化すると、溶接プロセスによる一体結合がもはや保証されないことを意味する。その理由は、例えば溶接ギャップが増加することにある。
−プロセス率(速度)と安定性が従来のレーザー溶接プロセスに比べて増加する。
−望ましくない熱的、流動学的、光学的及び/又は化学的な属性のためにレーザーによって溶接できないか、できたとしてもかなりの困難を伴う材料組み合わせを接合し溶接することが可能になる。
−所望の幾何学的形態からの接合相手の幾何学的逸れに関してプロセスの欠陥許容度が特に高まる。
−3次元輪郭のコンポーネントのプロセス的に信頼性のある処理が、挟持技術のための合理的な投資で、もたらされ得る。
−接合相手のいずれもが十分に高い吸収作用を有さない場合、溶接されるべきプラスチックの焦点にレーザー溶接ビームからの熱を僅かに吸収するだけで溶接範囲で材料を初期溶融するのに十分であるよう、上記プラスチックを予熱する。
3 レーザー溶接ビーム
5 レーザー溶接ビームガイド
10 挟持装置
14 ハロゲン放射源
15 2次放射
16 2次放射ガイド
18 溶接範囲
Claims (16)
- 熱可塑性成形品を溶接する方法、特に3次元成形品を輪郭溶接する方法にして、
−溶接されるべき輪郭(K)の近傍で接合相手(1,2)を接触するように動かし、
−挟持装置(10,10’)によって接合範囲で接合相手(1,2)に作用し、
−レーザー溶接ビーム(3)によって溶接範囲で接合相手(1,2)の一方(2)を放射にさらす
ような方法において、
−その温度上昇のために溶接範囲で他方の接合相手(1)を電磁的な2次放射(15)に付加的同時にさらす
ことを特徴とする方法。 - 2次放射(15)が、レーザー溶接ビーム(3)の波長と相違するビーム分を少なくとも有することを特徴とする請求項1に記載の方法。
- 用いられる2次放射(15)がIR又はUV放射であることを特徴とする請求項1又は2に記載の方法。
- 使用されるIR放射が、好ましくはハロゲン放射源(14)によって生成される短波若しくは中波のIR2次放射(15)であることを特徴とする請求項3に記載の方法。
- 2次放射(15)がレーザー溶接ビーム(3)と同心に且つ同期して適用されることを特徴とする請求項1〜4のいずれか一項に記載の方法。
- 2次放射(15)がレーザー溶接ビーム(3)に先行して導かれるものであることを特徴とする請求項1〜4のいずれか一項に記載の方法。
- 2次放射(15)が焦点を合わせられるものであることを特徴とする請求項1〜6のいずれか一項に記載の方法。
- 2次放射(15)及び/又はレーザー溶接ビーム(3)が、それらに対して透過性の挟持装置によって、特に挟持ローラ(10’)によって適用されるものであることを特徴とする請求項1〜7のいずれか一項に記載の方法。
- 熱可塑性成形品を溶接する装置、特に3次元成形品を輪郭溶接する装置にして、
−2つの接合相手(1,2)のための挟持装置(10,10’)と、
−レーザー溶接ビーム(3)を生じるためのレーザー溶接ビーム源と、
−2つの接合相手(1,2)の間の溶接範囲(18)で2つの接合相手(1,2)の一方(2)にレーザー溶接ビーム(3)を案内するためのレーザー溶接ビームガイド(5,35)と、
を備えて成る溶接装置において、
−電磁的な2次放射(15)を生じるための2次放射源(14)と、
−上記溶接範囲(18)で2つの接合相手(1,2)の他方(1)に2次放射(15)を案内するための2次放射ガイド(16)と
を有することを特徴とする溶接装置。 - 2次放射(15)がレーザー溶接ビーム(3)の波長と相違するビーム分を少なくとも有することを特徴とする請求項1に記載の方法。
- 2次放射源(14)がIR又はUV放射体であることを特徴とする請求項8又10に記載の方法。
- 2次放射源(14)が、中波IR放射体、又は好ましくは短波IRハロゲン放射体であることを特徴とする請求項11に記載の装置。
- レーザー溶接ビーム(3)の焦点が、2次放射(15)が作用する範囲と実質的に同心に且つ同期して配設されることを特徴とする請求項9〜12のいずれか一項に記載の装置。
- 2次放射(15)が作用する範囲(19)が、レーザー溶接ビーム(3)の焦点(21)に先行して導かれることを特徴とする請求項9〜12のいずれか一項に記載の装置。
- 2次放射(15)のための集束装置(16)を特徴とする請求項9〜14のいずれか一項に記載の装置。
- レーザー溶接ビーム(3)及び/又は2次放射(15)に対して透過性の挟持装置、好ましくはレーザー溶接ビーム(3)及び/又は2次放射(15)を溶接範囲の方へ透過する挟持ローラ(10’)を特徴とする請求項9〜15のいずれか一項に記載の装置。
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DE2002161642 DE10261642A1 (de) | 2002-12-27 | 2002-12-27 | Verfahren und Vorrichtung zum Verschweißen thermoplastischer Kunststoff-Formteile, insbesondere zum Konturschweißen dreidimensionaler Formteile |
PCT/EP2003/013668 WO2004058485A1 (de) | 2002-12-27 | 2003-12-04 | Verfahren und vorrichtung zum verschweissen thermoplastischer kunststoff-formteile, insbesondere zum konturschweissen dreidimensionaler formteile |
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EP (1) | EP1575756B1 (ja) |
JP (1) | JP4572118B2 (ja) |
KR (1) | KR101003275B1 (ja) |
CN (1) | CN100348404C (ja) |
AT (1) | ATE332796T1 (ja) |
AU (1) | AU2003293759A1 (ja) |
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Also Published As
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US20060144509A1 (en) | 2006-07-06 |
CN1732076A (zh) | 2006-02-08 |
CN100348404C (zh) | 2007-11-14 |
JP4572118B2 (ja) | 2010-10-27 |
US8075725B2 (en) | 2011-12-13 |
EP1575756B1 (de) | 2006-07-12 |
DE50304254D1 (de) | 2006-08-24 |
ATE332796T1 (de) | 2006-08-15 |
DE10261642A1 (de) | 2004-07-15 |
KR20050087861A (ko) | 2005-08-31 |
KR101003275B1 (ko) | 2010-12-21 |
WO2004058485A1 (de) | 2004-07-15 |
EP1575756A1 (de) | 2005-09-21 |
AU2003293759A1 (en) | 2004-07-22 |
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