CN101360583B - 用于刻写标记牌的装置 - Google Patents
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Abstract
本发明涉及一种用于刻写标记牌(16)的装置,具有一激光刻写器、一用于标记牌(16)的支承平面(14)、一用于将标记施加到标记牌(16)上的刻写头(20)和一用于使刻写头(20)在支承平面(14)上方运动的运动单元(18)。本发明提出:激光刻写器具有一谐振器(26)和一与谐振器(26)在空间上隔开的、位置固定地设置的泵光源,该泵光源通过一光导体(28)与谐振器(26)连接,并且,谐振器(26)是刻写头(20)的一部分,或者激光刻写器具有一纤维激光器(40)以及一光导纤维(42),其中,光导纤维(42)以其第一端连接在纤维激光器(40)的谐振器上,以引入输出耦合的激光光线,并以其第二端(44)装在刻写头(20)上。
Description
技术领域
本发明涉及一种用于刻写标记牌的装置。
背景技术
能够用来刻写标记牌(例如用于标注电气构件)的这种类型的已知装置具有一激光刻写器或者说激光印刷机,其谐振器和泵光源位置固定地安装。由谐振器射出的激光束通过一光学镜偏转到待刻写标记牌上,其中光学镜安装在运动单元上,并根据刻写头的运动而运动,以使射束偏转。射束一直扩展,直到其命中标记牌为止,其中,射束扩展取决于光线走过的路程,并且只能通过光学聚焦装置不充分地补偿。因此在待刻写标记牌上形成这样的焦点,它只能具有一种比在精确聚焦时低的功率密度。因此激光器功率必须选择得相当大。此外,光学镜机构内存在由于加工误差不可避免地产生的不精确度累加,从而影响到在刻写过程中的精确度。
发明内容
因此本发明的目的是,这样改进开头所述类型的装置,使得可以以较高精度进行刻写。
为此,本发明提供一种用于刻写标记牌的装置,具有一激光刻写器、一用于标记牌的支承平面、一用于将标记施加到标记牌上的刻写头和一用于使刻写头在支承平面上方运动的运动单元,其特征为:所述激光刻写器具有一纤维激光器以及一光导纤维,其中,光导纤维以其第一端连接在纤维激光器的谐振器上,以引入输出耦合的激光光线,并以其第二端装在刻写头上;所述刻写头具有一环绕包围由谐振器或由光导纤维发出的激光束的防护罩。
本发明还提出如下进一步优选的设计:
光导纤维以其第一端接合在谐振器上;
刻写头具有至少一个准直透镜和至少一个聚焦透镜,用于将从光导纤维第二端或谐振器发出的激光光线聚焦到标记牌上;
防护罩具有一用于放置到待刻写标记牌上的滑座;
防护罩具有环绕包围激光束的侧壁,它们从激光光线射出部位的高度向下一直延伸到滑座;
防护罩相对于运动单元高度可调地安装;
设有一用于将防护罩压紧到待刻写标记牌上的复位元件;
设有一用于抽吸在刻写时释放出来的颗粒和/或浮质的抽吸装置;
抽吸装置具有一通入防护罩中的抽吸管;
刻写头可拆卸地固定在运动单元上,和/或光导纤维可拆卸地安装在刻写头内;
设有一用于关断激光刻写器的保险机构,该保险机构在从运动单元取下刻写头时和/或在从刻写头中取走光导纤维时被触发。
本发明以这样的构想为基础,即,将激光光线从光导介质的发出部位移到靠近待刻写标记牌的周围。在按本发明的方案中从谐振器发出的激光光线到将激光束聚焦到标记牌上的光学装置为止只须走过一小的路程,在这个路程上光束仅仅略微扩展。因此,在待刻写标记牌上,激光光线可以聚焦于一较小的和可精确调整的焦点上,其中具有比在由于光束扩展而形成的较大焦点内更高的功率密度。因此可以采用具有较小功率的激光器,它们要经济有效得多。本发明的方案提供了相应的优点。在采用纤维激光器时,激光光线可以以小的损失输入耦合到光导纤维内。通过将光导纤维以其光输出端装在刻写头上,激光束可以集束直至紧密地引导到待刻写标记牌上。为了减小在激光光线输入耦合到光导纤维时的功率损失,适宜于将它以其第一端接合在谐振器上。此外,在这两种情况下,复杂而昂贵的光学镜装置就变得多余了。
刻写头有利地具有至少一个准直透镜和至少一个聚焦透镜,用于将从光导纤维的第二个末端或谐振器中发出的激光光线聚焦到标记牌上。刻写头宜具有一包围从谐振器或从光导纤维内发光的激光束的防护罩。防护罩防止:被标记牌或支承平面反射的激光光线到达周围,并例如造成对操作者眼睛的伤害。防护罩有利地具有一用于放置到待刻写标记牌上的滑座。这里,环绕包围激光束的侧壁适宜于从激光光线射出部位的高度向下一直延伸到滑座上。这样防护罩便完全包围激光束,并可以很好地在待刻写标记牌上方贴在它上面进行运动。有利的是,防护罩相对于运动单元高度可调地安装。这里,它适宜于通过一复位元件压紧到待刻写标记牌上。通过这个措施达到:防护罩也可以在非平面上很好地运动,而仍可靠地包围激光束。
按照一种有利的改进结构,设置一抽吸装置,用以抽吸在刻写时释放出来的颗粒和/或浮质。由此,有害物质或污染在其形成的同时便被去除。抽吸装置宜具有一通入防护罩内的抽吸管。
有利地,刻写头可拆卸地固定在运动单元上,和/或谐振器或光导纤维可拆卸地安装在刻写头内。刻写头或者谐振器或光导纤维可以更换,用另一个刻写头或谐振器或者另一条光导纤维来代替,例如如果需要对谐振器进行维护或修理工作的话。该装置适宜于具有一保险机构,一旦刻写头从运动单元取下或一旦谐振器或光导纤维从刻写头中取走,保险机构便关断激光光源。
附图说明
下面借助于一个在附图中表示的实施例详细说明本发明。附图表示:
图1按第一个实施例的用于刻写标记牌的装置的示意侧视图;
图2图1中的刻写头和运动单元的局部视图;
图3按第二个实施例的用于刻写标记牌的装置的示意侧视图;
图4图3中的刻写头和运动单元的局部视图。
具体实施方式
按第一个实施例的刻写装置10(图1)具有一个带有支承平面14的底座12,标记牌可放在支承平面上,以便刻写。在图1中,在支承平面14上摆放具有多个连接在一起的标记牌的标记牌组16。此外,该装置10具有一运动单元18,在它上面可拆卸地固定一刻写头20。运动单元18具有一个在支承平面14范围作用的运动臂22,它可垂直于其纵向运动地安装在底座12上,沿着运动臂22纵向可运动地安装一滑动块24,刻写头20固定在它上面。因此刻写头20可在支承平面14上方作两维运动。
刻写头20的组成部分包括一激光器的谐振器26。谐振器26通过一光导体28与一个在图中未画出的泵光源连接,泵光源与谐振器26在空间上隔开地、位置固定地设置。由谐振器26发出的激光束30垂直向下对准标记牌16,并用来给它配上标记。由于谐振器26和标记牌16之间的距离很小,激光束30可借助于合适的光学装置以高的能量密度聚焦到标记牌16上,因此在该刻写装置10中可以采用功率小的廉价激光器。谐振器26这样固定在刻写头20内,即,使它可方便地从刻写头中取出,以便更换。
刻写头20具有一防护罩32,其侧壁从谐振器26的光线射出开孔上方一直延伸到标记牌16,并环绕包围激光束30,防护罩32具有一个贴放在标记牌16上的滑座34,因此,在标记牌16不平时它也可以紧贴在它上方运动。它可以在垂直方向运动,并被复位弹簧36压紧到标记牌16上。为了去除在刻写时形成的磨粒或浮质,有一抽吸管38穿过防护罩32,该抽吸管连接在一个在图中未画出的抽吸装置上。
按第二个实施例(图3,4)的刻写装置10′的结构基本上相应于按第一个实施例的刻写装置10。因此,相互对应的构件配备有同样的附图标记。在图3、4所示的刻写装置10′中也可以借助于具有一运动臂22和一滑动块24的运动单元18使刻写头20在支承平面14上方作二维运动,标记牌16可以平放在支承平面上进行刻写。与在图1,2中所示的刻写装置10的主要区别在于,激光刻写器具有一纤维激光器40,它位置固定地安装,沿光线射出方向在一输出耦合镜后面,一光导纤维42以其第一端接合在纤维激光器42的激光活性纤维上。光导纤维42的第二端44通过一个插头46固定,插头拧入刻写头20内。由纤维激光器40输入耦合到光导纤维42内的激光光线在第二端44处从光导纤维42射出,借助于一聚焦单元(准直透镜48,聚焦透镜50)聚焦到待刻写表面上。在从第二端44到待刻写表面上的命中点的整个路程上,激光光线是被刻写头20包围着的。为此,刻写头20又具有一防护罩32,它配备有一紧贴在标记牌16上的滑座34。在该第二个实施例中,防护罩32也被一个用于抽吸磨粒或浮质的抽吸管38穿过。此外,防护罩32还具有一用于输入空气的输入口52。在第二个实施例中,防护罩32也克服弹簧力高度可调地安装。此外,聚焦单元48、50同样高度可调地安装在刻写头20内,其中,在刻写头20外侧上装有一个用于调整聚焦单元48、50高度的标尺。
概括地,可以确定如下:本发明涉及一种用于刻写标记牌16的装置,它具有一激光刻写器、一用于标记牌16的支承平面14、一用于将标记施加到标记牌16上的刻写头20和一用于使刻写头20在支承平面14上方运动的运动单元18。本发明规定:激光刻写器具有一谐振器26和一与谐振器26空间上间隔开的、位置固定地设置的泵光源,泵光源与谐振器26通过一光导体28连接,并且,谐振器26是刻写头20的一部分,或者激光刻写器具有一纤维激光器40以及一光导纤维42,其中,光导纤维42以其第一端连接在纤维激光器40的谐振器上,以引入输出耦合的激光光线,并以其第二端44装在刻写头20上。
Claims (10)
1.用于刻写标记牌(16)的装置,具有一激光刻写器、一用于标记牌(16)的支承平面(14)、一用于将标记施加到标记牌(16)上的刻写头(20)和一用于使刻写头(20)在支承平面(14)上方运动的运动单元(18),其特征为:所述激光刻写器具有一纤维激光器(40)以及一光导纤维(42),其中,光导纤维(42)以其第一端连接在纤维激光器(40)的谐振器上,以引入输出耦合的激光光线,并以其第二端(44)装在刻写头(20)上;所述刻写头(20)具有一环绕包围由谐振器(26)或由光导纤维(42)发出的激光束(30)的防护罩(32)。
2.按权利要求1所述的装置,其特征为:刻写头(20)具有至少一个准直透镜(48)和至少一个聚焦透镜(50),用于将从光导纤维(42)第二端(44)或谐振器(26)发出的激光光线聚焦到标记牌(16)上。
3.按权利要求1所述的装置,其特征为:防护罩(32)具有一用于放置到待刻写标记牌(16)上的滑座(34)。
4.按权利要求3所述的装置,其特征为:防护罩(32)具有环绕包围激光束(30)的侧壁,它们从激光光线射出部位的高度向下一直延伸到滑座(34)。
5.按权利要求1所述的装置,其特征为:防护罩(32)相对于运动单元(18)高度可调地安装。
6.按权利要求5所述的装置,其特征为:设有一用于将防护罩(32)压紧到待刻写标记牌(16)上的复位元件(36)。
7.按权利要求1所述的装置,其特征为:设有一用于抽吸在刻写时释放出来的颗粒和/或浮质的抽吸装置。
8.按权利要求7所述的装置,其特征为:抽吸装置具有一通入防护罩(32)中的抽吸管(38)。
9.按权利要求1所述的装置,其特征为:刻写头(20)可拆卸地固定在运动单元(18)上,和/或光导纤维可拆卸地安装在刻写头(20)内。
10.按权利要求9所述的装置,其特征为:设有一用于关断激光刻写器的保险机构,该保险机构在从运动单元(18)取下刻写头(20)时和/或在从刻写头(20)中取走光导纤维(42)时被触发。
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PCT/EP2006/012285 WO2007082583A2 (de) | 2006-01-18 | 2006-12-20 | Vorrichtung zur beschriftung von kennzeichnungsschildern |
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EP (1) | EP1991385B1 (zh) |
JP (1) | JP2009524225A (zh) |
CN (1) | CN101360583B (zh) |
AU (1) | AU2006336088A1 (zh) |
BR (1) | BRPI0620920B1 (zh) |
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DE102007011179A1 (de) * | 2007-03-06 | 2008-09-11 | Murrplastik Systemtechnik Gmbh | Vorrichtung zur Beschriftung von Kennzeichnungsschildern |
DE102010010071A1 (de) * | 2010-02-26 | 2011-09-01 | Bundesdruckerei Gmbh | Markierungsvorrichtung und Verfahren zum Markieren von Wert- oder Sicherheitsdokumenten unter Verwendung von Lichtleitfasern |
DE102010051539A1 (de) * | 2010-11-18 | 2012-05-24 | Murrplastik Systemtechnik Gmbh | Vorrichtung zur Beschriftung von Kennzeichnungsschildern |
DE102012202330B4 (de) * | 2012-02-16 | 2017-08-17 | Trumpf Laser Gmbh | Laserbearbeitungsvorrichtung mit einem relativ zu einer Spannpratze beweglichen Laserbearbeitungskopf |
DE102012215147B4 (de) * | 2012-08-27 | 2017-04-27 | Trumpf Laser Gmbh | Laserbearbeitungskopf mit federbeweglichen Abschirmungsblechen |
DE102012109088B4 (de) * | 2012-09-26 | 2019-05-09 | Schott Ag | Faseroptisches Konversionsmodul |
DE102014012055A1 (de) | 2014-08-18 | 2016-02-18 | Murrplastik Systemtechnik Gmbh | Vorrichtung zur Beschriftung von Kennzeichnungseinheiten |
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WO2007082583A3 (de) | 2007-12-06 |
BRPI0620920A2 (pt) | 2011-11-29 |
DE102006002573A1 (de) | 2007-07-19 |
EP1991385A2 (de) | 2008-11-19 |
EP1991385B1 (de) | 2012-06-13 |
WO2007082583A2 (de) | 2007-07-26 |
US20110031227A1 (en) | 2011-02-10 |
BRPI0620920B1 (pt) | 2013-09-03 |
CN101360583A (zh) | 2009-02-04 |
AU2006336088A1 (en) | 2007-07-26 |
JP2009524225A (ja) | 2009-06-25 |
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