Mechanism for assemblying multi-strate panel with plastic keys

Mechanism for injecting flowable solidifying adhesive simultaneously into a plurality of key-forming passages in the joints of a panel comprising a plurality of assembled strakes joined together by interlocking joints, each of which joints has one such key-forming passage extending lengthwise therethrough, said mechanism comprising:

• a support for such panel;
• a nozzle manifold mounted endwise beyond a panel assembled on the support for reciprocation toward and away from a selected, upstream end of such panel;
• a plurality of nozzles mounted on said nozzle manifold and in open communication therewith, each of the nozzles being aligned with, and shaped and located for advance into sealed engagement with, one of the key-forming passages in such panel mounted on the support upon selected advance of the nozzle manifold toward such panel;
• controlled actuating means mounted for reciprocative actuation of the nozzle manifold;
• a flushing manifold having a plurality of nozzle seats thereon, each of the nozzle seats having an opening therein communicating with the flushing manifold, the flushing manifold being mounted for movement between retracted position, in which the flushing manifold is clear of the nozzles throughout the limits of reciprocative movement of the nozzle manifold, and actuated position, in which one of the nozzle seats is aligned with each of the nozzles for sealed communication of the nozzles with the flushing manifold upon selected advance of the nozzle manifold;
• controlled actuating means mounted for actuation of the flushing manifold between its retracted and actuated positions;
• a supply of pressurized adhesive mounted for controlled communication with the nozzle manifold;
• first valve means for selectively controlling the flow of adhesive from the supply thereof through the nozzle manifold, the nozzles, and the key-forming passages with the nozzles in seated communication therewith;
• a supply of pressurized solvent mounted for controlled communication with the flushing manifold;
• and
• second valve means for selectively controlling the flow of flushing solvent through the flushing manifold and the nozzles when in sealed communication therewith.