| 摘要 |
<p>The adhesive gun is electrically heated to translate feedstock from a solid state to a molten state, is pneumatically cooled to control the solid/melt feedstock interface within the gun's barrel, and is pneumatically powered to discharge the molten feedstock in response to operation of a trigger mechanism. The control system includes a novel regulator valve, the valve functioning to regulate high pressure inlet air to a maximum, predetermined pressure so that the pneumatic motor is not over powered and a novel pressure switch, the pressure switch functioning as an open/close switch for the heater's electric circuit so that the electric heater cannot function unless the high pressure inlet air is on. A thermostat for the electric heater is also provided in the electric circuit. The regulator valve, pressure switch and the thermostat of the control circuit are all incorporated or located within the adhesive gun's housing.</p> |
