Future Packaging – Technologien, Produkte, Visionen
Werner Wirth Systems GmbH / PVA
High-precision platform for selective protective coating and dispensing
As the sales partner of US manufacturer PVA for Germany and Switzerland with its new PVA 2000SF inline platform, Werner Wirth is a first stop for manufacturers from all segments of electronics. The PVA2000SF for selective protective coating, casting, beading and dispensing opens the advantages of flexible process automation to users. Coatings are applied in up to four programmable axes with the utmost flexibility and reliability. Multi-dimensional layers, 3D forms and rotations up to 360° can be scanned at high traverse speeds and used to obtain precise results.
The axes execute application-specific control of the metering and spray valves. The versatile range of products also includes an innovative valve for optimised contour precision when curtain coating. This valve prevents the atomization of paint under compressed air and opens up new dimensions in selective coating with solvent-based and solvent-free water-based paints, thus reducing cycle times threefold or fourfold compared to spray coating. By adapting to the widest range of ambient conditions, the valve achieves a consistent paint viscosity and constant compression ratio in the system.
The variety of applications in the PVA platform is persuasive: They can be used for 1-component or 2-component media, solder pastes, bond adhesive, cyanoacrylate and many other media. The basic system is equipped with brushless DC electric actuators, precision rotary spindles and optical encoders on all axes. The positioning repeatability accuracy is 0.025 mm at a resolution of 0.005 mm. The system is designed for boards and work pieces up to 500 x 500 mm in size with a clearance of up to 100 mm above and below the part.
The models in the PVA product range include table devices and a fully automated product line. Modules such as turning stations, transport systems, inspection stations, IR dryers and UV dryers can be combined with the coating module. Customer-specific solutions are individually designed, making the PVA coating/dispensing system suitable for just about all applications.