Viscous material discharge device

Patent metadata

Field	Value
Publication number	US-11413649-B2
Application number	US-202016809549-A
Country	US
Kind code	B2
Filing date	Mar 5, 2020
Priority date	Sep 8, 2017
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A controller controls a plunger to operate at a measurement speed and discharge the viscous material from the nozzle before applying the viscous material to the workpiece. The controller measures a period of time, from when the plunger starts operating at the measurement speed until a discharge amount of the viscous material reaches a predetermined value, as a time delay amount. The controller further determines an operation speed of the plunger and/or a moving speed of the nozzle during application of the viscous material to the workpiece according to the measured time delay amount.

First claim

The invention claimed is:

1. A viscous material discharge device that discharges a viscous material and applies the discharged viscous material to a workpiece in a bead shape, the viscous material discharge device comprising:
a reservoir that stores the viscous material;
an extrusion mechanism that extrudes the viscous material in the reservoir by a plunger;
a nozzle that discharges the viscous material;
a holding member that holds the nozzle;
a bead width sensor that measures a bead width of the discharged viscous material;
a nozzle moving mechanism that moves the holding member and the nozzle held by the holding member; and
processing circuitry configured to
control the plunger to operate at a measurement speed and discharge the viscous material from the nozzle before applying the viscous material to the workpiece;
measure a period of time, from when the plunger starts operating at the measurement speed until a discharge amount of the viscous material reaches a predetermined value, as a time delay amount; and
determine one of an operation speed of the plunger and/or a moving speed of the nozzle during application of the viscous material to the workpiece according to another speed determination parameter together with the time delay amount, the another speed determination parameter including the bead width of the viscous material measured while applying the viscous material to the workpiece.

2. A viscous material discharge device that discharges a viscous material and applies the discharged viscous material to a workpiece in a bead shape, the viscous material discharge device comprising:
a reservoir that stores the viscous material;
an extrusion mechanism that extrudes the viscous material in the reservoir by a plunger;
a nozzle that discharges the viscous material;
a holding member that holds the nozzle;
a remaining amount sensor that detects a remaining amount of the viscous material in the reservoir;
a nozzle moving mechanism that moves the holding member and the nozzle held by the holding member; and
processing circuitry configured to
control the plunger to operate at a measurement speed and discharge the viscous material from the nozzle before applying the viscous material to the workpiece;
measure a period of time, from when the plunger starts operating at the measurement speed until a discharge amount of the viscous material reaches a predetermined value, as a time delay amount;
measure the remaining amount of the viscous material to be discharged; and
determine one of an operation speed of the plunger and/or a moving speed of the nozzle during application of the viscous material to the workpiece according to another speed determination parameter together with the time delay amount, the another speed determination parameter including the remaining amount of the viscous material to be discharged.

3. The viscous material discharge device according to claim 1 , wherein the processing circuitry controls a start of application work at the operation speed.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Otsuki Naohiro
• Ito Toshihiko
• Sakai Akihito

Classifications

• B05C5/0216 Primary

  by relative movement of article and outlet according to a predetermined path · CPC title

• B05C11/1002 Primary

  Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves · CPC title

• B05D7/24

  for applying particular liquids or other fluent materials · CPC title

• B25J11/0075

  Manipulators for painting or coating · CPC title

• B05C11/1005

  responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern · CPC title