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伺服控制焊接器与气动系统一较高下 - China Medical Device Manufacturer
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Fri, January 19th, 2018

2009年5月CMDM电子快讯 » 技术新知
伺服控制焊接器与气动系统一较高下

By: Shana Leonard

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伺服控制焊接器具有工艺可重复性,可降低生产成本,而且校准方便。

据Dukane公司 (美国伊利诺伊州,St. Charles;www.dukcorp.com) 介绍,医疗器械制造商在焊接领域面临三大挑战:工艺可重复性、验证和校准设备的能力以及生产成本。针对这些难题,公司推出了一种伺服控制超声焊接系统,旨在比气动系统更有效地解决上述问题。

为了证明伺服系统优于气动焊接系统,Dukane公司借助医疗器械制造商进行了一次对比测试。器械制造商利用Dukane公司的伺服控制系统对聚碳酸酯滤清器盖进行焊接,然后再用气动系统予以对照,以此评估系统的工艺可重复性。据Dukane公司称,制造商测出气动压力机的平均标准偏差为6.6%,而伺服焊接机的平均标准偏差为1.9%。

其首要特点在于能精确控制塌陷速率,我们称之为Melt-Match技术。市场销售副总裁Mike Johnston说道。与气动压力机不同,你能够对速度进行编程控制。 Johnston指出,在焊接过程中验证塌陷速率的可重复性也是以前的气动系统无法做到的。

在熔融阶段匹配相应的塌陷速率也是决定粘合强度的关键因素,Johnston解释道,由于塌陷过慢可能会导致材料降解,而塌陷过快可引起冷成形。我们发现通过优化熔融塌陷的速度可以达到出色的粘合效果,他补充道。

Dukane公司在确保工艺可重复性的同时,也在寻求使系统便于校准且更具成本效益的方法。为防止在校准和验证过程中意外或擅自改变设置,焊接机设计为无需操作人员控制的形式。而且,与气动系统相比,伺服机件无需压缩空气进行致动。该特性可以减少能量消耗,并提高生产的可持续性。

获得专利的iQ系列电源对提高焊接机的整体效能可谓功不可没。据Dukane称,其加工速度可达0.5ml/秒,为业内最快。该系统还采用iQ浏览器软件,并配备诸如以太网连接、远程诊断、联网、多种数据存储选择以及SPC 程序连接等标准特性。


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