Importance

Loading Importance Indicators...

Abstract

The present invention provides a discharge device (1) including a liquid chamber (13) that is communicated with a discharge port (11) and is supplied with a liquid material, a plunger (33) that is coupled to a piston (30), and that advances and retreats within the liquid chamber (13) in a state not in contact with a lateral surface of the liquid chamber (13), a resilient member (40) that applies a biasing force to the plunger (33), a main body (2) including a piston chamber (20) in which the piston (30) is disposed, solenoid valves (61, 62, 63 and 64) that supply a pressurized gas, supplied from a pressurized gas source, to the piston chamber (20), or that exhaust the pressurized gas from the piston chamber (20), and a controller (90) that controls operations of the solenoid valves (61, 62, 63 and 64), wherein the solenoid valves (61, 62, 63 and 64) are connected to the piston chamber (20) in parallel. With those features, the size of the discharge device can be reduced, and the plunger can be operated at a high speed.

Loading the Abstract Image...

First Claim