传输

传输应用

无接触传送玻璃是平板显示器和光伏太阳能电池板制造过程中的关键,这是因为能够大量减少玻璃在整个过传输中因为接触而产生的损耗,New Way的可扩展化生产线,模块化方案可以满足这样的需求。New Way经常有2组或更多的生产线集中于生产大批的,用于单层玻璃传输,数据处理或检测的传输式气浮栅,这些气浮栅包括精密型传输气浮栅。

更多详情如下。

无接触式玻璃输送的原理和益处 

平板显示器制造商力求增加生产量,意识到在玻璃输送过程中剔除接触是很关键的一步,New Way多孔介质技术提供了理想的解决方案。因为空气可平均地分布在气浮栅的表面,玻璃几乎不可能与之接触。

本质上,气浮是从气浮轴承的具有数以百万的亚微米小孔的表面渗出。该表面的材质是专利碳,是气浮轴承所固有的。因此,就算有大量的空气流失,损坏也将减小到最少,特别是它有时间让漂于玻璃的气流驱散,从而让玻璃轻缓落到气浮栅上,等待重新加载气压。

即使在接触的状态下,工作中的碳也不会呈颗粒状。经分析发现,事实上,它几乎就是一个对进气过滤的高效微粒空气过滤器,因此确保New Way气浮栅与洁净室环境兼容。



气膜的厚度在很大程度上受到应用要求的影响,其中很大的影响是玻璃的尺寸,但是与传统智慧相反,气膜越薄,其刚性越强,气膜的高度取决于应用。不过,New Way推荐气膜高度的绝对极小值为10微米。这是因为玻璃本身的偏差达到了5微米,New Way技术可以控制在±5微米(参考以下推荐产品的规格)。



这种精确的控制使得,让真空的气压结合成为可能,一旦达到这种恰当的平衡(在精度控制上)。就可以达到之前无法达到的级别。



New Way供应的模块化气浮栅极易安装,其安装设计极其广泛,从高速传输到低层控制,New Way提供的精密型气浮栅是用于高精密玻璃的检测和优化过程站。这种气浮栅具有非常高的精密级别,刚性和阻尼。

Conveying with New Way Transition Zone Air Bars

In many ‘Fabs' around the world, compressed air availability or compressor capacity limit the amount of consumable air available for the process. In some cases, only blowers may be available. In other cases, such as in clean room applications, it is also preferable to minimize flow and the resulting currents or eddies that can impact a process. New Way transition zone air bars were designed specifically to address such applications.



Unlike orifice-based air bearings, consumables are measured in liters-per-hour NOT in liters-per-minute. This factor alone significantly reduces the potential for issues...by many magnitudes.



Individual transition zone air bar components are arrayed according to the conveying needs of the application. Five different sizes are available to make an engineer's design as easy as possible.



Sheets of FPD or Solar Module glass (up to Generation 10 and beyond) are then conveyed on the thin layer of air distributed by New Way Porous Media across the face of the array, completely without contact. Thin though it is, this air layer creates an amazingly stiff and stable support.



A nominal amount of vacuum is used to prevent the glass sheet from sailing, while providing some level of stability and control. It also flattens the glass, while reducing surface vibration. Flutter and instability are minimized as the entire sheet is ‘fixtured' in space, balanced between the forces of air pressure and vacuum.



The repeatability of the glass fly height and the high stiffness of the air bar arrays, combined with fast vibration damping of the glass, allows for greater resolution in scanning than previously attainable with mechanical contact means of conveyance. High motion control resolution also becomes possible, since the co-efficient of static and moving friction is virtually eliminated in the sheet, allowing for sub-micron resolution of glass orientation. This is ideal for the processing of flat panel glass as well as optical inspection.

Finally, sSurface speeds of up to 100 meters-per-second are theoretically possible and, although this is not feasible with large glass sheets, since the sheet itself cannot be accelerated this rapidly, manufacturing speeds of 2-3 meters-per-second are easily achievable. Not only are faster speeds possible, without ‘sailing,' but the additional vacuum enables even tighter non-contact control. This is because the vacuum design creates a pre-load stiffness and ‘hold down' force which inhibits the lifting of the sheet from the conveyors during rapid motion. This pre-load force also flattens out the glass, significantly aiding in the high contrast analysis of the glass surface which is so critical to the flat panel display industry.

Conveying with New Way Flotation Zone Air Bars

For situations where control is less of a requirement, New Way has developed the flotation zone air bar. This modular component eliminates both the carbon face, and also the series of vacuum holes that are a defining feature of the company's transition zone air bars. This more-economical product enables a totally integrated approach to your processing needs.

Processing or Inspecting with New Way Precision Zone Air Bars

New Way has developed an even more specialized product for ‘areas of interest' in the FPD and PV Solar Module manufacturing processes. The company's porous media precision zone air bars combine an even tighter array of vacuum holes with a grid of vacuum grooves for tight fly height control in processing or inspection zones.



In fact, this modular product is designed so that as the glass moves on and off the air bar, the vacuum pressures and air gaps remain the same, ensuring consistent glass height and stability - from the lead edge of the glass to the trailing edge - allowing for analysis and inspection of a greater percentage of the entire glass sheet. The system provides non-contact control of ±5µm at a fly height of 25µm, well within the 25-35µm focal range for FPD glass inspection cameras and other, similar operations.

Products

Transition Zone Air Bars

New Way® developed theTransition Zone Air Bar for improved non-contact control of Flat Panel Display glass and Photovoltaic (PV) substrates.

Flotation Zone Air Bars

New Way® developed the Flotation Zone Air Bar for areas outside the FPD or PV processing zone where the added control of vacuum is not necessary.

Precision Zone Air Bars

New Way Precision Zone Air Bars are designed to provide tight, non-contact control for areas of interest in the FPD or PV Solar Module manufacturing process.