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Vitronics Soltec:ZEVAm细间距原件的焊接技术
材料来源:The 11th Vision Awards           录入时间:2017/5/7 0:03:58

参赛公司:ITW EAE, a division of Illinois Tool Works, Inc.
       参赛类别:焊接-再流焊
       获奖名称:远见优秀奖 - VA Excellence Award


ZEVAm
细间距原件的焊接技术
ZEVAm - Fine Pitch Technology

这是一种新的选择性焊接设备,专为那些有大量混合生产印刷电路组件焊接需求的客户而设计。电路板通过链条传输进入焊接机。在焊接机第一区域,电路板施加助焊剂过程与其他类似的选择性焊接制程一样。然而这款机器独有的高频液滴喷嘴能使机器高速自动运转,来减少施加助焊剂时间。在第二区域,电路板预热后以足够的热能来激活焊剂,以达到可靠的焊接效果。

在预热区之后,电路板被转到一个独立的可X或Y方向倾斜的传送带上,电路板在波峰上实现带倾角的拖焊。 倾斜角度可平行或垂直传送带向上/向下4到10度,以使焊点各个方向都达到良好的焊接效果。此外,这个锡缸具备能360度旋转的独特特征。旋转与倾斜这两个特性使得用非湿润的喷嘴焊接细间距的连接器成为可能,同时也能使用湿润的性喷嘴焊接 。连同使用焊锡排流调节器,细间距引脚间的桥接被去处。在组件焊接中,为有更多足够的热能,可在焊接区域上方安装一个额外的上层加热器。同时可以增加的第二个锡缸可带来以下好处:

  • 减少焊接周期时间。
  • 可用两个不同的焊料合金。
  • 可用两个或更多不同尺寸和形状的喷嘴。(SMTC@ACT)


图解:左二 Ton Colijn, Business Unit Manager
           右二 Khoh Kar Heong, Product Manager Liquid Soldering
           ITW EAE旗下Vitronics Soltec品牌产线的两位管理人员代表上台领奖留念。图片来源:SMT China

This new selective solder machine is meant for printed circuit assembly soldering for those customers that have a high mix production. The boards are transferred over chain conveyor into the machine. In the first unit the boards are fluxed just like in all other similar selective soldering processes. However a high frequency drop jet allows a high robot speed to minimize flux cycle time. In the second part the board is preheated to activate the flux and bring enough thermal energy into it for a good soldering result.

From the preheater the boards are transferred into a separate conveyor unit that can be tilted in x or y direction. The board is dragged (tilted) over the wave. The tilting up or down from 4 to 10 degrees parallel and/or perpendicular to the conveyor make solder joints accessible from all directions. Additional this solder pot has the unique feature that it can turn 360 º. This tilt and rotate ability makes it possible to solder fine pitch connectors using non-wettable as well as wettable nozzles. Together with a solder drainage conditioner bridges on fine pitch connectors will be removed. To bring enough energy in the assembly an additional topside heater can also be installed above the soldering. A second solder pot can be added for several reasons: Reduce cycle time; Have two different solder alloys; Have two or more different nozzles (diameter or different shape).



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