I need to automate a process that involves applying hot glue to paper. I own a standard handheld hot glue gun, like this one:
Sticks of room-temperature glue are fed in the right side. Pulling the trigger slightly advances the stick of glue. The orange tip on the left is heated, melting the glue stick, and the pressure of the advancing glue stick causes heated liquid glue to come out of the tip. It quickly cools once it's applied to a surface such as paper, and becomes a room-temperature adhesive within just a few seconds.
Industrial-scale machines exist to apply hot glue to surfaces, but they are very expensive. They don't involve glue sticks and hand-activated triggers; they involve glue beads and some other mechanism for forcing liquid hot glue out of the heated nozzle, and then cutting it off.
Using either the glue gun that I already own, or simply the sticks of glue with another heating-and-pressure mechanism, is there a simple way to robotically apply hot glue to paper?
EDIT: In my application, the paper will be on a flat tray. The 'bot needs to apply a line of glue around the edge of a 1" circle, or a 1" square. Once the application is complete the glue should stop emitting from the gun. There is often a "streamer" of glue after it stops emitting; I want this to be handled without a mess. The paper is then move a few inches, and the 'bot squirts out another circle or square of glue. The process keeps repeating.