Discharge device and liquid supply method
AssigneeThreebond Co., Ltd.
InventorsRyota Suzuki, Naoya Saito
Life of this patent
Estimating the term…
Abstract
Technical Problem Provide is a discharge device capable of easily controlling an operation of a plunger at the time of supplying a viscous material to a cylinder and a liquid supply method capable of forming a desired overlap portion. Solution to Problem The discharge device 10 includes the supply valve 40 which controls the supply of the viscous material M to the cylinder 30, the plunger 50 which applies a pressure to the viscous material supplied to the cylinder, the ball screw 60 which is movable in the same direction as the back-and-forth direction of the plunger, and the motor 120 which is connected to the ball screw through the power transmission mechanism 110, wherein the plunger and the ball screw are not connected.
Claims8
A discharge device which discharges a viscous material from a nozzle communicating with a cylinder by pressurizing the viscous material supplied to the cylinder, the device comprising:
- a supply valve which controls a supply of the viscous material to the cylinder;
- a plunger which applies a pressure to the viscous material supplied to the cylinder;
- a ball screw which is movable in a same direction as a back-and-forth direction of the plunger;
- a motor which is connected to the ball screw through a power transmission mechanism;
- and
- a pressure sensor which is arranged in the cylinder and detects a pressure of the viscous material supplied into the cylinder,
- wherein the discharge device performs correcting an internal pressure by raising the ball screw, while the supply valve is closed, to drop the internal pressure of the cylinder to a desired value after the viscous material is supplied to the cylinder,
- the pressure sensor monitors the internal pressure of the cylinder after the discharge device performs correcting the internal pressure, and
- the plunger and the ball screw are not connected.
A liquid supply method for supplying a viscous material to a discharge device for discharging the viscous material, wherein
- the discharge device includes:
- a supply valve which controls a supply of the viscous material to a cylinder;
- a plunger which applies a pressure to the viscous material supplied to the cylinder;
- a ball screw which is movable in a same direction as a back-and-forth direction of the plunger;
- a motor which is connected to the ball screw through a power transmission mechanism;
- and
- a pressure sensor which is arranged in the cylinder and detects a pressure of the viscous material supplied into the cylinder,
- the plunger and the ball screw are not connected, and
- the method comprises:
- supplying the viscous material by opening the supply valve in a state where the ball screw starts moving;
- correcting an internal pressure by raising the ball screw, while the supply valve is closed, to drop the internal pressure of the cylinder to a desired value after the viscous material is supplied to the cylinder;
- and
- monitoring the internal pressure of the cylinder after correcting the internal pressure.
Dependencies are inferred from the claim text.