JPH0929165A - Method for applying coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the diameter and area of a waste flow coating to be recognized to coincide with those in actual production. SOLUTION: A camera 10 for recognizing a coating shape and a part for controlling the discharge of a coating nozzle are provided to a coater for spot- applying a coating material in a specified shape by an intermittent coating nozzle 9. The fact that the flow coating shape formed by the nozzle 9 is stabilized from the n-th coating inherent in each coating material is previously confirmed, and the shape is registered in the control part for each coating material. When the actual operation is started or the coating material is changed, the flow coating of the coating material is continuously conducted, the n-th flow coating shape regarding the coating material is recognized by the camera 10, the result is compared with the specified shape, and the discharge of the nozzle 9 is controlled from the compared result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of applying a coating material such as an adhesive, and more particularly to a method of coating a coating material which is intermittently spot-coated by a predetermined amount.

[0002]

2. Description of the Related Art A conventional coating apparatus for spot-coating a coating material in a predetermined shape with a coating nozzle that operates intermittently is
As shown in FIG. 3, the coating nozzle 9 and the discarding tape 1
Discard tape cassette 8 loaded with and recognition camera 1
0. Before starting the actual production, the coating material is discarded from the coating nozzle 9 onto the discarding tape 1, and the recognition camera 10 recognizes the coating diameter and the coating area of the discarded coating material. , The recognition result is compared with a predetermined coating diameter or coating area, and if the recognition result satisfies the predetermined coating diameter or the allowable range of the coating area, the actual production is performed in that state, and the recognition result is obtained. Does not satisfy the predetermined application diameter and the allowable range of the application area, the application conditions such as the ejection pressure and the ejection time of the application nozzle 9 are compared with the recognition result and the predetermined application diameter and the application area. Based on the above, the coating material is discarded again from the coating nozzle 9 onto the discarding tape 1.
The recognition camera 10 recognizes the coating diameter and coating area of the coating material thrown away again, and the recognition result is compared with the predetermined coating diameter and coating area, and the coating condition of the coating nozzle 9 is determined based on the comparison result. A conventional coating material coating method is performed in which the changing operation is repeated until the recognition result satisfies the predetermined coating diameter or coating area and then the actual production is automatically controlled.

[0003]

However, in the above conventional structure, there is something unreasonable in the method of setting the coating amount, and for some coating materials, a predetermined coating diameter or coating area can be obtained. The coating conditions can be set in a short time,
Moreover, it is possible to stably perform the coating of the predetermined coating diameter and the coating area, but for other coating materials, it takes a long time to set the coating conditions for obtaining the predetermined coating diameter and the coating area. In addition, there is a problem that the coating of a predetermined coating diameter or coating area may not be stably performed.

The present invention solves the above-mentioned problems and provides a coating method of a coating material in which the coating diameter or coating area for discarding to be recognized and the coating diameter or coating area in actual production always match. It is an issue.

[0005]

In order to solve the above-mentioned problems, the coating material coating method of the present invention comprises a coating device for spot-coating the coating material into a predetermined shape by means of a coating nozzle which operates intermittently. A recognition camera for recognizing the coating shape of spot coating and a control unit for controlling the discharge amount of the coating nozzle are provided, and the discarding coating is continuously performed by the coating nozzle for each coating material coated by the coating device. After confirming in advance that the shape is stable from the n-th throwing peculiar to each coating material, the n-th time for each coating material is registered in the control unit, and when the actual work is started or the coating material is changed. The coating shape of the n-th discarding of the coating material is continuously recognized by the recognition camera, and the recognition result is compared with the predetermined shape. And controlling the discharge rate of the coating nozzle from the comparison result.

[0006]

The above-mentioned problem is caused by neglecting the fact that the number of times of discarding required until the discharge amount of the coating nozzle becomes stable is different due to the difference in characteristics such as viscosity of the coating material.

That is, when the characteristics such as the viscosity of the coating material are within a certain range, the coating diameter and the coating area of the discarding which are coated at time intervals and the coating are performed continuously in time. The coating diameter and coating area in the actual production are the same, and in this case, even in the prior art, good results can be obtained as in the former case. However, when the characteristics such as the viscosity of the coating material deviate from the above range, the coating diameter and the coating area of the discarding which are applied at time intervals and the actual production in which continuous application is performed in time are performed. The coating diameter and the coating area are different, and in this case, the conventional technique has an inconvenient result like the latter.

In a coating apparatus for spot-coating a coating material into a predetermined shape by a coating nozzle that operates intermittently, when the viscosity of the coating material is low, the coating diameter and the coating diameter of the waste shot are applied at intervals in time. The area is the same as the coating diameter and coating area in actual production in which coating is performed continuously in terms of time.
In addition, when the viscosity of the coating material is high, the coating diameter and coating area of discarding which are coated at time intervals and the coating diameter and coating area in actual production where coating is performed continuously in terms of time are If they are not the same, but they are discarded and ejected continuously without any time interval as in the actual work, the application diameter and the application area of the ejection ejection after the number of times according to the viscosity of the coating material will be applied continuously in terms of time. The same as the coating diameter and coating area in actual production.

Therefore, the coating method of the coating material of the present invention is
For each type of coating material applied by the coating device, it is confirmed in advance that the coating shape of the throwing stroke continuously performed by the coating nozzle is stable from the n-th throwing stroke peculiar to each coating material,
The n-th data for each type of coating material is registered in the control unit, and when the actual work is started or when the coating material is changed, all the coating and discarding of the coating material is continuously performed, and the n-th data regarding the coating material is registered. Recognize the application shape of the discarding of the with the recognition camera, and compare the recognition result with the predetermined shape,
The discharge amount of the coating nozzle is controlled based on the comparison result.

By doing so, even if a large number of types of coating materials having different properties such as viscosity of the coating material are used, the coating diameter and the coating area of the discarding to be recognized and the coating diameter and the coating area in actual production should be recognized. Can always be matched with each other, the discharge amount of the coating nozzle can be easily set in a short time, and the uneven discharge amount in actual production can be eliminated.

[0011]

EXAMPLE FIG. 1 shows an example of a method for applying a coating material according to the present invention.
~ It demonstrates based on FIG.

This embodiment uses the coating apparatus shown in FIG. In FIG. 3, as in the above description of the conventional example, 1 is a discarding tape, 8 is a discarding tape cassette, 9 is a coating nozzle, and 10 is a recognition camera. Then, as a basic operation before actual production, the coating nozzle 9 is positioned at the position of the discarding tape cassette 8 and is discarded on the discarding tape 1. When the number of discard strokes reaches n, which will be described later,
The recognition camera 10 moves to the position of the waste tape cassette 8 and recognizes the application area of the waste tape.

In step # 1 of the flowchart of FIG. 1 showing the operation of the present embodiment, the recognition camera 10 measures the coating area for the number of discarding strokes performed by the coating nozzle 9 on the discarding tape 1. The number of recognition start times n is set, and the count m of the number of discarded shots is set as a variable. The recognition start count n is to recognize the application area of the n-th discarding, and n is set as follows. When the viscosity of the coating material is low, the coating diameter and coating area of the discarding which are applied at intervals in time are the same as the coating diameter and coating area of the actual production which is applied continuously in time. Therefore, n = 1 is set.
When the viscosity of the coating material is high, the coating diameter and coating area for discarding, which are applied at intervals in time, are the same as the coating diameter and coating area in actual production, where continuous coating is performed in time. However, if thrown out continuously, the application diameter and the application area after the number of times depending on the viscosity of the application material will be the same as the application diameter and the application area in actual production that apply continuously in time. . Therefore, depending on the viscosity of the coating material, the number of discarding strokes is set to n so that the coating diameter or coating area for discarding is the same as the coating diameter or coating area in actual production in which coating is performed continuously in time. Can be set to.

In step # 2, the count number m of the number of times the coating material is discarded is initialized to zero.

In step # 3, the coating nozzle 9 starts discarding on the discarding tape 1.

In step # 4, the number of discard strokes is set to 1
Count each time.

In step # 5, the set value n is compared with the number of discard strokes m, and if n> m, step # 5
Return to 3 and continue throwing until n = m. n = m
If so, proceed to step # 6.

In step # 6, the recognition camera 10 recognizes the coating area of the m-th discard shot.

In step # 7, the recognition result of the application area for discarding recognized in step # 6 is compared with a predetermined application area. If the comparison result is YES, the actual production is started, and the comparison result is NO. If so, the process returns to step # 2, and steps # 2 to # 7 are repeated.

FIG. 2 shows discarding positions 2 to 7 on the discarding tape 1.

The case of the recognition start count n = 3 will be described. The first throwing is performed at throwing positions 2 to 4, and the coating area of the throwing at the throwing position 4 is set to the camera 10.
Recognize.

If the application area for discarding at the discarding position 4 is within the permissible range of the predetermined coating area, the actual production is started as it is.

If the application area for discarding at the discarding position 4 is outside the permissible range of the predetermined coating area, the discharge time of the coating nozzle 9 is determined based on the result of comparison between the recognized coating area and the predetermined coating area. After changing, the throwing-off is performed at the throwing-off positions 5 to 7, and the camera 10 recognizes the application area of the throwing-off at the throwing-off position 7.

If the application area for discarding at the discarding position 7 is within the permissible range of the predetermined coating area, the actual production is started as it is.

If the application area for discarding at the discarding position 7 is outside the permissible range of the predetermined coating area, the ejection time of the coating nozzle 9 is determined based on the result of comparison between the recognized coating area and the predetermined coating area. Change, feed the discarding tape 1, and again perform discarding to the discarding positions 2 to 4,
The operation in which the camera 10 recognizes the application area for discarding at the discarding position 4 is repeated until the application area for discarding at the discarding positions 4 or 7 falls within the allowable range of the predetermined application area.

In this embodiment, a waste tape is used, and the waste tape is discarded. However, when the waste tape is actually applied to a substrate or the like, the contrast with the adhesive is clear. You are limited to what you have.

[0027]

The coating method of the coating material of the present invention, regardless of the characteristics such as viscosity of the coating material, determines the coating diameter and coating area of the discarding to be recognized and the coating diameter and coating area in actual production. It is possible to make them coincident with each other, it is possible to reduce the variation in the coating shape in the actual work, and it is possible to set the discharge amount of the coating nozzle quickly and efficiently.

[Brief description of drawings]

FIG. 1 is a flowchart showing an operation of an embodiment of a coating material coating method according to the present invention.

FIG. 2 is a plan view showing a discarding position on a discarding tape in an example of the method for applying the coating material of the present invention.

FIG. 3 is a perspective view showing a discarding mechanism of a coating material coating device.

[Explanation of symbols]

 1 Discarding tape 2 to 7 Discarding position 8 Discarding tape cassette 9 Coating nozzle 10 Recognition camera

Claims (1)

[Claims] 1. A coating device that spot-coats a coating material in a predetermined shape by a coating nozzle that operates intermittently, a recognition camera that recognizes the coating shape of the spot coating, and a control unit that controls the discharge amount of the coating nozzle. For each type of coating material to be coated by the coating device, it is confirmed in advance that the coating shape of the discarding stroke continuously performed by the coating nozzle is stable from the n-th discarding stroke peculiar to each coating material. The n-th time for each type of coating material is registered in the control unit, and when the actual work is started or when the coating material is changed, all the coating materials are thrown out continuously and the n-th time regarding the coating material is performed. A coating material characterized by recognizing a discarding coating shape by the recognition camera, comparing the recognition result with the predetermined shape, and controlling the discharge amount of the coating nozzle from the comparison result. How to apply.