Stencil wiping device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 10, 2002
Issued Date -
N/A
app pub date -
Nov 22, 2000
filing date -
Nov 30, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A cleaning apparatus for cleaning solder paste off the bottom side of a printed circuit board stencil includes a container of cleaning solution therein and a blade holder that is movable between a wiping position and the container of cleaning solution. A wiping blade is mounted in the blade holder. The blade holder, with the blade mounted thereon, is reciprocated back and forth when in communication With a stencil to be cleaned. The blade is moved from the wiping position in communication with the stencil into the cleaning solution in the container. A pneumatic piston and rotary actuator provides controlled movement of the wiping blade. The wiping blade may be vibrated during wiping to improve removal of solder paste from the stencil and the cleaning solution may be ultrasonically vibrated to improve removal of solder paste from the wiping blade. The wiping blade may also be pulsed into a sponge to remove excess cleaning solution prior to the next cleaning cycle. After cleaning, the cleaning solution may be filtered and reused in a closed loop method.
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