| 摘要 |
PURPOSE: Provided is an automatic sprayer for spraying a high temperature molten adhesive, which can control the spray amount and the spray pressure accurately by using hydraulic pressure and flow-controlling valves and improve durability by driving a piston of a nozzle assembly by using pneumatic pressure. CONSTITUTION: The automatic sprayer contains: a main board(110) containing a main channel(115) to send the adhesive, inflowed from a tank through an inflow port(112) of a first channel(114), to a second channel(116) or to return the adhesive to the tank through a return port(113); a flow controlling valve(70) to control the amount of the adhesive, which is mounted in one side of the main channel(115); a hydraulic pressure controlling valve(80) to control the pressure of the adhesive, which is mounted in the other side of the main channel(115) and faced to the flow controlling valve(70); a connection board containing an adhesive pipe and a pneumatic pressure pipe; and the nozzle assembly to spray the adhesive by using the pneumatic pressure, which is fixed to the end of the connection board.
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