Understanding_ the_Cleaning_Process_for_Automatic_Stencil_Printers.pdf - 第28页
Random S tuf f • Motion additions to wiping pr ocess has shown no impr ovement in wiping • Ultrasonic • X- Motion • Nano - coating of s ten cils • Confusion on Aculon Nano - Clear – reduces wipes/ buildup of pas te – not…
Preventive Maintenance
• Check the owner's manual for preventive maintenance for your individual machine
• Replace Vacuum filters based on requirements
• Check main drive belts/chains for proper tension
• Clean all bushings and remove any foreign material from wiper assembly
• Check and replace vacuum hosing as needed especially if using solvent
• Remove plenum and remove any material build up in trough – check plenum bow if present
• Inspect plenum for damage – verify match of plenum to stencil/foil size
27
Understanding the Cleaning Process for Automatic Stencil Printers
Random Stuff
• Motion additions to wiping process has shown no improvement in wiping
• Ultrasonic
• X- Motion
• Nano- coating of stencils
• Confusion on Aculon Nano-Clear – reduces wipes/ buildup of paste – not focused on release
• Nano-coating will wear from the bottom of stencil
• New coating methods – Plasma coating / baking improve coating life
• Paper wash
• No input
• Paperless wiper development
• Effectiveness of wipe
• How to indicate alternative wiping material is contaminated
• TBD
28
Understanding the Cleaning Process for Automatic Stencil Printers
Summary
• Under stencil wiper is the first defense against defects
• Matching the wiper profile and frequency to the individual boards – where one size does not fit all
• The wiper like the printer in general – process as good as the material applied
• Base wiper paper used on performance not cost
• Solvents when used correctly can contribute a positive influence to the stencil cleaning process
• Keep up with wiper PM for optimum performance
29
Understanding the Cleaning Process for Automatic Stencil Printers