Liquid material ejector

A liquid material ejector comprising:

• a liquid material supply port through which a liquid material is supplied;
• a nozzle for ejecting the liquid material;
• a valve block having a metering bore to be filled with the liquid material and a liquid material supply channel communicating with the liquid material supply port;
• a selector valve having a first channel for allowing communication between the metering bore and the liquid material supply channel and a second channel for allowing communication between the metering bore and the nozzle;
• a plunger advancing and retracting in the metering bore;
• a plunger driver having an actuator for driving the plunger;
• a valve driver having an actuator for driving the selector valve;
• and
• a joint portion which connects the plunger and the plunger driver,
• wherein the plunger driver and the valve driver are arranged in the longitudinal direction,
• wherein the liquid material ejector further comprising a fixing member to fix the plunger driver and a slide rail capable of moving the joint portion in the vertical direction,
• wherein the actuator of the plunger driver having an actuator rod which is advanced and retracted,
• wherein the joint portion connects the actuator rod and the plunger,
• wherein the plunger driver consists of one plunger driver,
• wherein the valve driver consists of one valve driver,
• wherein the valve block has a valve bore communicating with the liquid material supply channel, the nozzle, and the metering bore, and
• wherein the selector valve is a cylindrical rotary valve which is rotatable while sliding in contact with an inner wall of the valve bore, the first channel is a recessed groove formed in a circumferential surface of the cylindrical rotary valve, and a second channel is a through-bore diametrically penetrating the cylindrical rotary valve.