JPH0724390A - Device and method for applying liquid - Google Patents

Abstract

PURPOSE:To automatically apply a liquid to a work under specific conditions by disposing a dispenser for feeding the liquid and a needle for applying the liquid on a carriage moving relatively together with the work mounting beds and carry out the automatic control for the work. CONSTITUTION:Two work mounting beds 2 in the Y axial direction are disposed on a base plate 1. A carriage 4 movable in the X axial direction is disposed on a stand 3 mounted on the base plate 1. Further, a head 5 movable in the Z axial direction is disposed on the carriage 4. A dispenser 6 for feeding liquid and a needle 7 for applying the liquid are disposed on the head 5. An actuator control device 8 and a dispenser control device 9 are controlled by a CPU10 through an input and output device 11. The needle 7 is moved relatively, and also various kinds of operations of the dispenser 6 are controlled by the arrangement. At that time, the content of various kinds of work is read out of a ROM 12 by a display device 13 and stored in a semiconductor memory 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid coating device and a coating method, and more particularly to a liquid coating device and a coating method having a high viscosity such as an adhesive.

[0002]

2. Description of the Related Art Conventionally, when a highly viscous adhesive is applied to these works for adhering a cover to a main body of a small electronic component (trimmer potentiometer), the adhesive is supplied to a dispenser and provided to the dispenser. An appropriate amount of adhesive is applied to the work while moving the work and the dispenser from the application needle.

[0003]

However, due to various conditions such as the viscosity of the coating liquid, the discharge pressure, the diameter of the hose or the like from the dispenser to the coating needle, the distance, and the like, a delay in behavior occurs at the start of coating, and the coating needle of the above dispenser. Since it is difficult to control the amount of adhesive supplied from the product, the application amount on the work cannot always be set to the optimum value, and it is not possible to make the application amount uniform at the starting point and during movement. It was

For some workpieces, it is desirable to increase the amount of adhesive at the starting point and the end point of applying the adhesive and to reduce the amount in the middle.

The present invention has been made to solve the above problems.

[0006]

In a liquid coating apparatus of the present invention, a work mounting base movable on the substrate in the Y-axis direction in a plane parallel to the substrate, and a mount provided on the substrate are mounted on the work mounting base. A carriage that can move in the X-axis direction in a plane parallel to the substrate, and Z that separates the carriage from the work mount.
A dispenser that supplies an axially movable liquid, a work mount, a carriage, and a drive device that drives the dispenser, an application needle provided in the dispenser for applying a liquid to a work, and a discharge from the needle It is characterized by comprising a control device for controlling the application timing, application amount, and application time of the liquid to be applied.

Further, the liquid coating apparatus of the present invention is characterized in that a command corresponding to a work is stored in advance and a teaching device is provided for adding the command to the control device as needed.

Further, the liquid application method of the present invention comprises the steps of applying the liquid for a first set time while the application needle of the dispenser is stopped, applying the liquid while moving the application needle, and applying the application. And a step of applying the liquid for a second set time while stopping the needle.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the liquid coating apparatus of the present invention comprises a substrate 1, a work mount 2 movable on the substrate 1 in the Y-axis direction in a plane parallel to the substrate 1, and the substrate 1. And a carriage 4 movable on the pedestal 3 in the X-axis direction on a plane parallel to the substrate 1, and on the carriage 4 moved in the Z-axis direction in contact with and separated from the work mount 2. Possible head 5, a dispenser 6 for supplying the liquid provided on the head 5, an application needle 7 for applying the liquid in the dispenser 6 to a work fixedly held on the work mount 2, and the work mount 2, an actuator control device 8 for controlling the movement of the carriage 4, the carriage 4, and the head 5.
A dispenser control device 9 for controlling a flow rate of applying the liquid in the dispenser 6 to a work, a CPU (microcomputer) 11 for controlling the actuator control device 8 and the dispenser control device 9 via an input / output device 10.
And a ROM (read-only semiconductor memory) 12 in which work details such as work procedures determined for each work and coordinate data of positioning points, moving speed, coating time, etc. are stored in advance, and work procedures and positioning for works to be processed. The teaching device 13 teaches work contents such as coordinate data of a location, moving speed, coating time, and the like, and a readable / writable semiconductor memory 14 that stores the taught contents from the ROM.

In the liquid coating method of the present invention, the CPU 11 controls the actuator controller 8 via the input / output device 10 to move the coating needle 7 relative to the work mount 2 to the coating start position designated in advance. Then, a signal is sent from the CPU 11 to the dispenser control device 9 via the input / output device 10 to start coating, and at the start of coating, the coating is stopped for a first set time according to the data stored in the semiconductor memory 14. The coating is performed, the coating work is performed while moving at a designated coating speed, and the coating is performed by stopping for a second set time after reaching the coating point.

If the latter point is the midpoint of the coating, it moves to the next coating point in the same manner as above, and if it is the end point of the coating, the coating operation is finished.

The work procedure such as the work procedure for a predetermined work, the coordinate data of the positioning location, the moving speed, and the coating time are read from the ROM 12 by the teaching device 13 and stored in the semiconductor memory 14, and the stored contents are stored. Work in a reproducible manner.

Similarly, the positioning operation is performed by sending a command from the CPU 11 to the actuator control device 8 via the input / output device 10.

The stop time for coating at the point of performing the coating operation (midpoint and end point) is set to an optimum value in relation to the viscosity of the coating liquid, the discharge pressure of the dispenser 6 and the like. .

The coating start point is set to a longer time so as to compensate for the time delay due to the air in the dispenser 6, the amount of coating liquid, and other factors.

The coating amount in the moving coating is adjusted by setting the moving speed (coating speed).

[0018]

Since the liquid coating device and coating method of the present invention are as described above, the viscosity of the coating liquid, the discharge pressure, the diameter of the hose from the dispenser controller to the coating needle,
It is possible to compensate for the delay of the behavior at the start of coating caused by various conditions such as distance by setting a long set time, and
By teaching the coating operation, it becomes possible to automatically apply a highly viscous liquid onto a work piece without the need for human intervention, and it is possible to finely adjust the coating state. There are great benefits.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a liquid application device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 substrate 2 work mounting base 3 mount 4 carriage 5 head 6 dispenser 7 application needle 8 actuator control device 9 dispenser control device 10 input / output device 11 CPU (microcomputer) 12 ROM (read-only semiconductor memory) 13 teaching device 14 semiconductor memory

Claims (3)

[Claims] 1. A work mount that is movable in the Y-axis direction on a substrate in a plane parallel to the substrate, and a pedestal provided on the substrate is movable in the X-axis direction in a plane parallel to the substrate. Possible carriage, a dispenser for supplying a liquid that can move in the Z-axis direction on and off the work mount to the work mount, a drive device that drives the work mount, the carriage, and the dispenser, and a liquid for the work. A liquid application device comprising: an application needle provided in the dispenser for applying the liquid; and a control device for controlling the application timing, the application amount, and the application time of the liquid ejected from the needle. 2. The liquid coating apparatus according to claim 1, further comprising a teaching device for preliminarily storing a command corresponding to the work and adding the command to the control device when necessary. 3. A step of applying the liquid for a first set time with the application needle of the dispenser stopped, a step of applying the liquid while moving the application needle, and a second step with the application needle stopped. A liquid application method comprising the step of applying a liquid for a set time.