Another way you can do the glue application is to use a "glue fountain".. use a pump to push the glue into a vertical tube that flows back on itself via gravity. Then raise the fountain or lower the board onto the fountain to just touch the glue to the surface. I have seen a number of variations of this same idea used for flux, lube, and glue applications.
I'd look into glue that sets via ultraviolet light, so you don't have to deal with it setting up in the equipment. Dave On 10/9/2012 6:42 PM, craig wrote: > Clarification: > > Automation note: > > The pick and place equipment does not pick up balls. It simply gates > one one out of the selected bin and drops it down plastic tubing to the > spindle replacement where it is dropped into place. Flexible plastic > tubing permits the placement of the bins > off the CNC equipment used for x,y placement. My Java design code > creates g-code text files for milling holes and surface designs. It will > be extended also create a second file with the same g-codes for x,y ball > locations and commands selecting ball bins and reading sensors verifying > pick and place operations. > > > From hand placement: > > When placed the balls are slightly less than half above the surface. > 6mm diameter marbles are embedded 3mm to 3.5 mm. > The marbles do not protrude through the bottom of the board. Less than > 1/2 embedded balls are much easier to break out with side torque. The > bottom of the balls is usually at least 1 to 2 mm above the bottom. > Things vary with wood thickness. > > Small amounts of transparent glue in the hole under the balls is OK > for most designs. > > l will post pictures of some designs when I find the camera. Our > poltergeist seems to have hidden it. > The link will be posted when pictures are posted. > > The caulking compounds like I am using now are somewhat flexible. > Differential thermal and humidity expansion has not been a problem. Most > hot melt glues should also be adequately elastic. > > craig > > > > ------------------------------------------------------------------------------ > Don't let slow site performance ruin your business. Deploy New Relic APM > Deploy New Relic app performance management and know exactly > what is happening inside your Ruby, Python, PHP, Java, and .NET app > Try New Relic at no cost today and get our sweet Data Nerd shirt too! > http://p.sf.net/sfu/newrelic-dev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
