Constant rate discharge apparatus and constant rate discharge method

摘要

A pump unit is provided which sucks a material having a high viscosity contained in a container and to pump it to a nozzle under pressure. An axial member which performs sucking and pumping of the material is connected with the pump unit. The axial member is axially slidable by the pressure of air supplied to the cylinder. The material which is sucked into the pump unit is discharged from the nozzle by the increase in pressure occurred when the axial member descends. A sensor is provided in the vicinity of the axial member. A result of detection of the sensor is supplied to a controller. A reference speed when constant rate application is performed is presettable in the controller. Correction of pressure is conducted by comparing the actual moving speed of the axial member with the reference speed.