JP2003071350A - Method and apparatus for coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating method by which the irregular coating of a coating surface area is suppressed even if a coating operation by different coating magnification is carried out using the same nozzle and to provide an apparatus for the nozzle. SOLUTION: The instructed coating magnification and the coating magnification in the practical coating operation are not to be different but they have to be similar to the utmost. Namely, a plurality of instructed coating magnifications are set for every nozzles 112 for material coating. A coating place to be an object for the material coating is segmented into a plurality of groups corresponding to the coating magnification. The instructed coating magnification most approximate to the coating magnification of each group of the plurality of the instructed coating magnification is used for recognition trial. The instructed coating magnification and the coating magnification in the coating operation become similar by setting a plurality of the instructed coating magnification respectively to the average value of the coating magnification of the coating object belonging to each group. In the case an instructed coating magnification is provided to each nozzle, the average value of the coating magnification for coating place to be the object is used as the instructed coating magnification.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material applying method and a material applying apparatus for applying a viscous material such as an adhesive to an object to be applied.

[0002]

2. Description of the Related Art A material applying device fixes electronic parts such as an adhesive, a cream solder, and a silver paste to a predetermined application position of the object to be applied when the electronic part is attached to the object to be applied such as an electronic circuit board. This is an apparatus for applying a viscous material to cause the above. As an example, in order to apply an adhesive to an object to be coated, an adhesive application device 10 as shown in FIG.
0 is used. In the figure, an adhesive application device 10
0 is an adhesive application head 1 for applying an adhesive to an object to be coated.
10, an X robot 130 that conveys the adhesive coating head 110, an object holding unit 140 that carries the object to be carried into the apparatus and holds it, and a controller 150 that controls the operation of the entire apparatus. As an element. Among them, the X robot 130 drives the motor 132 to convey the adhesive application head 110 in the X direction shown in the figure, and the object holding unit 140 drives the motor 142 to move the object to be applied in the Y direction shown in the figure. Transport to. This adhesive application head 110
By the relative movement between the movement in the X direction and the movement in the Y direction of the workpiece holder 140 that is orthogonal to the X direction on the plane,
The adhesive application head 110 can apply an adhesive to an arbitrary position on an object to be applied. The controller 150 controls the amount of movement of the adhesive application head 110 in the X direction and the amount of movement of the target object holder 140 in the Y direction.

FIG. 6 is an enlarged view of the adhesive application head 110 of the adhesive application device 100. In the illustrated adhesive application head 110, three sets of application mechanism sections 111 are mounted that apply pressure by using compressed air to push out the adhesive. Each of the application mechanism units 111 contains a syringe 113 that stores an adhesive and discharges a predetermined amount of the adhesive from a nozzle 112 by the action of compressed air.
3, a compressed air supply system 115 for supplying compressed air to the No. 3, and a syringe 113 for applying an adhesive to an object to be coated are indicated by Z in FIG.
And an elevating mechanism 120 for elevating in the direction.

FIG. 7 shows the coating mechanism unit 111 shown in FIG.
One is taken out and the main part is shown. In FIG. 7, the compressed air supply system 115 includes a pipe 116 that supplies compressed air to the syringe 113, and a valve 117 that controls the supply of compressed air. Also, the lifting mechanism 1
20, a lift shaft 121 that is connected to a syringe 113 and through which compressed air can pass, a lever 123 that rotates about a support shaft 122, a cam follower 124 that is rotatably attached to the lever 123, And a cam 125 that engages with the cam follower 124.
One end 123a of the lever 123 is connected to the elevating shaft 121, and the other end 123b is in contact with the drive shaft of the nozzle selection cylinder 126. In the lever 123 selected so that the cam follower 124 and the cam 125 come into contact with each other by the operation of the nozzle selection cylinder 126, the one end 123a of the lever 123 is rotated by the rotation of the cam 125, and the one end 123a of the lever 123 is rotated.
It rotates about 2 and the lifting shaft 1 is rotated by this rotation.
21 moves up and down in the Z direction in the figure.

FIG. 8 shows an adhesive applying device 100 shown in FIG.
The detail of the to-be-applied body holding | maintenance part 140 is shown. The coated body holding unit 140 carries in a coated body 141 such as an electronic circuit board, and holds the coated body 141 by a pair of holding rails 143a and 143b facing each other at both edges in the Y direction of the drawing.
On one side of the holding rail 143a, the trial tape 10
No. 1 is arranged, and the adhesive discharged from the nozzle 112 (see FIG. 6) is applied to the surface of the test tape 101. The coating amount (coating diameter) of the applied adhesive is recognized by the recognition camera 118 (see FIG. 6), and trial hit recognition is performed to determine whether the coating amount is within a predetermined allowable range. After that, the trial-tapping tape 101 is wound by a predetermined amount by a motor (not shown) in preparation for the next trial-tapping.
A pair of holding rails 143a for holding the object 141 to be coated,
143b and the trial tape are the motor 142 shown in FIG.
It is possible to move in the Y direction in the figure by driving. It should be noted that the coated body 141 is provided with a pair of positioning reference marks 144 that serve as a reference when performing positioning.

The operation of the conventional adhesive coating device 100 having the above-described structure will be described with reference to FIGS. 5 to 8. As shown in FIG. 6, before the application of the adhesive to the object to be coated is started, the adhesive application head 110 performs the trial application of the adhesive 102 onto the trial application tape 101. Figure 7
117 provided in the compressed air supply system 115
Operates for a predetermined time, the float 114 in the syringe 113 is pushed down by the compressed air, and the syringe 11
The adhesive 102 contained in the nozzle 3 is discharged from the tip 112a of the nozzle 112 by a predetermined amount. The operation of the nozzle selection cylinder 126 brings the cam follower 124 of the lever 123 into contact with the cam 125. And cam 125
Rotation of the lever 123 causes the end 123 of the lever 123 to
a rotates and the syringe 11 is moved through the elevating shaft 121.
3 is lowered in the direction opposite to Z in the figure. The adhesive 102 discharged onto the tip 112 a of the nozzle 112 is
2 is applied onto the test-tape tape 101 arranged so as to face No. 2. After the application, the syringe 113 is raised to the original position by the rotation of the cam 125.

The state of application of the adhesive 102 by the trial shot is determined by the recognition camera 1 mounted on the adhesive application head 110.
18 (see FIG. 6). Controller 150
Determines the quality with respect to a predetermined target coating diameter by measuring the coating diameter of the adhesive by the trial shot based on the imaging information output from the recognition camera 118.
In this way, the trial shot and the subsequent imaging operation are repeated until the coating diameter by the trial shot falls within the allowable range of the target coating diameter. After the coating diameter by the trial shot is within the permissible range of the target coating diameter, as shown in FIG.
1 is carried into the adhesive application device 100, and is held in a predetermined position by the object holding device 140, and then the operation of applying the adhesive 102 to the object is started.

In the conventional adhesive applying device 100 having the above-mentioned structure, the syringe 1 is operated by the action of compressed air.
Since the adhesive 102 in 13 is pushed out, the discharge amount of the adhesive 102 is not constant due to a change in the remaining amount of the adhesive 102 in the syringe 113. The confirmation of the coating diameter by the above-described test shot recognition avoids the deterioration of the adhesive quality due to the variation in the discharge amount, and confirms the amount so that the coating amount can be kept constant even if the head difference of the syringe 113 changes. And the necessary ejection conditions are corrected.

FIG. 9 shows the tendency of the change in coating amount due to the difference in water head. The horizontal axis represents the change in the remaining amount of the viscous material such as the adhesive in the syringe 113, and the amount of the remaining amount decreases and the head of the water decreases as it goes to the right in the figure. The vertical axis represents the unit coating time (10 in the case shown) for this syringe 113.
The amount of the adhesive agent discharged from the nozzle 112 connected to the syringe 113 when an air pressure of (milliseconds) is applied is indicated by the diameter (application diameter) of the adhesive agent applied to the object 141 to be coated. As shown in the figure, the remaining amount in the syringe 113 is 80
There is a tendency that the coating diameter of the adhesive decreases from 0.697 mm to 0.489 mm as it decreases from 35 mm to 35 mm. This tendency of decreasing the coating amount is due to the weight of the adhesive and the compressibility of the air used for pressurization. In the data shown in the figure, the change in coating amount is shown by the change in coating diameter. Since the coating area is obtained from the coating diameter, the change in the coating area has the same tendency as in FIG.

In order to correct the change in the applied amount of the adhesive due to the change in the remaining amount in the syringe 113, the adhesive application apparatus 100 recognizes the above-described trial shot every time the adhesive applying operation is performed at a predetermined frequency. Then, it is confirmed whether the coating amount is within the allowable range. When the applied amount is below the allowable range, generally, a measure for increasing the applied amount is taken by increasing the pressurizing time of the air pressure applied to the syringe 113. After this measure, the trial shot recognition is performed again, and if the application amount is within the predetermined allowable range, the adhesive application operation is restarted.

The coating operation of the adhesive coating device 100 for coating the material to be coated 141 will be described again with reference to the flowchart of FIG. First, the coated body 141 is placed on the coated body holding portion 140.
(Step 1), the pair of holding rails 143a,
The position is corrected and held at 143b (step 2). Next, the object 141 to be coated is XY moved by the object holder 140.
The positioning reference mark 144 that is positioned in the direction and provided on the object 141 to be coated is recognized by the recognition camera 118 (step 3). Based on this recognition result, the object to be coated 1
The coating position is corrected by moving 41 (step 4). After that, it is judged whether or not the trial hit recognition is performed (step 5). It is possible to arbitrarily set how often test hit recognition is performed in the process of the adhesive application operation.
If this recognition is frequently performed, it naturally leads to a decrease in the facility operating rate, so an appropriate frequency is set according to the required accuracy of the adhesive application amount.

When it is determined in step 5 that the test shot recognition is confirmed, the object holding section 140 positions the nozzle 112 at the designated coating position on the test shot tape 101, and the test shot tape 101 is positioned. The adhesive 102 is applied (step 6). After the application, the recognition camera 118 is positioned at a position facing the test tape 101 to recognize the application amount (step 7). Based on the recognition result, it is judged whether or not the adhesive is within the preset allowable range (step 8). If it is not within the allowable range, the application amount is corrected (step 12), and the test shot recognition is performed again. The operation is performed (step 6-step 8). As a result of the recognition, if the coating amount is within the allowable range, the nozzle 112 is designated as the coating target 141 by the movement of the adhesive coating head 110 in the X direction and the movement of the coating target holding unit 140 in the Y direction. Then, the nozzle 112 is lowered and the material is applied (step 9). This is the object to be coated 14
1) Apply to all application points (Step 1
0), it is completed when all coating operations are performed (step 11).

[0013]

However, there are problems with the above-described material coating device and material coating method according to the prior art. If the amount of adhesive, cream solder, silver paste, etc. applied is too large, it may cause the insulation failure between the parts and the parts to be applied. May fall off your body. Therefore, the application amount of the viscous material must be controlled to be an appropriate amount for each part.

In the material applying device, the application amount of the viscous material such as an adhesive is generally controlled on the basis of the pressurizing time of the air pressure applied to the syringe 113 which stores the viscous material as described above. That is, how many times as long as the standard unit application time (for example, 10 milliseconds) is applied to the syringe 113 depending on the required application amount of the application site to be applied. It is set. The magnification for this unit coating time is called the coating magnification,
As an example, the coating magnification is set from 0.1 times to 4.0 times in 0.1 steps at a total of 40 steps. During the material coating operation, the corresponding syringe 113 is controlled by the controller 150 of the material coating device 100.
Time obtained by multiplying the unit coating time to this coating magnification calculated according to the size of the required coating amount at each coating location,
Air pressure is applied. The controller 150 is preliminarily input with the sizes of the required coating amounts of all the coating points to be coated, and the coating magnification is calculated according to this.

Generally, in a material coating device, one nozzle applies a viscous material at a plurality of application magnifications so that an adhesive can be applied for a plurality of required application amounts. However, in the determination of the coating amount in the above-described trial shot recognition operation, 1 is set for one nozzle.
It is performed by using one trial shot recognition application magnification (hereinafter, referred to as "teaching application magnification"). For example, the teaching application magnification of a certain nozzle is 1.0 times (for example, 10 milliseconds).
When the setting is set to, the test shot recognition whether the coating amount of the material is within the allowable range is 1.0 times the coating regardless of the coating magnification in the actual coating operation by the nozzle. It is performed based on the applied amount of the material applied at the magnification (the same, 10 milliseconds).

In the actual coating operation by the nozzle, the coating magnification is not limited to only 1.0 times, and the coating magnification is 3.0 times (the same, 30 milliseconds) or 4.0 depending on the size of parts. The coating operation is performed twice as long (40 milliseconds in the same case). In this case, if the adhesive coating operation is performed with the nozzle at a coating magnification of 1.0 times (same for 10 milliseconds), the variation amount is within the allowable range by the above-described test shot recognition. Has been confirmed, so there is no problem. However, in the case of applying an adhesive having a coating magnification of 4.0 times (the same, 40 milliseconds) corresponding to a large part with the nozzle, trial shot recognition with a coating magnification of 4.0 times has not been made. Therefore, the coating amount may deviate from the allowable range.

FIG. 11 shows data consisting of measured values representing the above situation. In the figure, when the teaching application magnification of one nozzle is set to 1.0 and when the material application is performed by sequentially changing the application magnification with this nozzle, how the variation of the application area (application amount) changes is shown. Shows. The horizontal axis is the coating magnification (times), and the vertical axis is the coating area (mm ² ).
The two line graphs show that the maximum value (◯) and the minimum value (●) of the coating area at each coating magnification are connected a plurality of times. Therefore, the vertical width between the two line graphs shows the variation in the coating area.

As shown in the figure, at a coating magnification of 1.0, since this is the teaching coating magnification, the variation in the coating area is within the allowable range (± 10% in the illustrated example). However, as the coating magnification deviates from the taught coating magnification of 1.0 times to the right side of the figure, the two line graphs deviate (that is, the variation width of the coating area widens), and when the coating magnification becomes 4.0 times, the variation width becomes wider. Is about 0.
It is as large as 3 mm ² (± 20% or more). If the material is applied with such a variation in the coating amount, the above-mentioned insulation problem (when the coating amount is too large), or parts falling off problem (when the coating amount is too small) may occur.

FIG. 12 shows a flow of a test shot recognition operation according to the conventional technique. After the start of step 1,
The nozzle to be taught is set in step 2, and step 3
One teaching application magnification is set with. Usually, this teaching application magnification is set to 1.0 times. Next, in step 4, the allowable range of the coating amount (coating diameter) at this teaching coating magnification is set. This allowable range is usually about ± 10% of the target coating diameter. If the allowable range is made too narrow (extremely 0%), the trial shot recognition operation will be repeated until the coating area falls within this allowable range, which may be a factor in reducing productivity. On the other hand, if the allowable range is set too wide, the variation in the coating amount will be large, and the component mounting quality may be degraded. After each of the above settings, the trial striking operation is performed in step 5, and step 6
If the coating amount recognition result in step 7 is within the allowable range, step 7
Is the end of teaching.

As described above, in the prior art, when material coating is performed with a plurality of coating magnifications with one nozzle, the coating amount is controlled unless the coating magnification is the material coating that matches the teaching coating magnification. The reality is that it is not done properly. Therefore, for example, there is a risk that the yield of non-defective products and the productivity may be reduced, including a factor that deteriorates the quality of component mounting on the object to be coated.

Therefore, according to the present invention, the above-mentioned problems are solved, and even when the coating operation is carried out at a coating magnification different from the teaching coating magnification, the material can be stably coated without unduly varying the coating area. , And a material coating device.

[0022]

SUMMARY OF THE INVENTION In the present invention, the above-mentioned prior art is realized by reducing the deviation between the teaching application magnification and the application magnification when actually performing the application operation, and providing a means for making both application magnifications as close as possible. It is intended to solve the above problem, and specifically includes the following contents.

That is, according to the first aspect of the present invention, the inside of the container in which the viscous material is stored is added for a time obtained by multiplying the unit magnification by the coating magnification calculated according to the size of the required coating amount. A method for applying a pressure to apply the viscous material in the container from a nozzle to an object to be coated, and a trial for confirming that the application amount of the viscous material applied from the nozzle is within a preset allowable range. A plurality of teaching application magnifications that are application magnifications when performing hit recognition are set for each nozzle, and when performing the coating operation with the nozzles, the target required application amount of the plurality of set teaching application magnifications is set. The present invention relates to a material coating method, wherein the trial shot recognition is performed by using one of the teaching coating magnifications that is closest to the coating magnification calculated according to the size. Variations in the material coating amount are suppressed by setting a plurality of teaching coating magnifications and performing trial shot recognition at a teaching coating magnification close to the coating magnification in the actual coating operation.

According to a second aspect of the present invention, there is provided a material coating method in which the nozzles are used to divide the target material coating locations into a plurality of groups according to the required coating amount of the coating locations. It is characterized in that the application magnifications of the application portions belonging to each group are obtained and an average value thereof is calculated, and the average value of the application application magnifications of the respective groups thus calculated is set as the plurality of teaching application magnifications of the nozzle. . By setting a plurality of teaching application magnifications to be set as the average value of the application magnifications of the divided application portions, the difference between the teaching application magnification and the application magnification in the actual application operation is reduced.

According to a third aspect of the present invention, in each of a plurality of containers storing viscous materials, only a time obtained by multiplying a unit application time by an application magnification calculated according to a size of each required application amount A method of applying a pressure to apply a viscous material in each of the containers to an object to be coated from nozzles respectively coupled to the plurality of containers, wherein all application points targeted for material application by the plurality of nozzles Are divided into the same number of groups as the containers according to the size of the required application amount of the application location, and one container is selected from the plurality of containers corresponding to each one of the plurality of groups. And the nozzles connected to the nozzles are respectively specified, and the teaching is the application magnification at the time of performing the trial shot recognition for confirming that the application amount of the viscous material applied from each of the nozzles is within a preset allowable range. Application times But it relates material application method characterized in that it is set to the magnification approximate to the coating ratio of the coating portion belonging to each group corresponding to the respective nozzles. One teaching application magnification is set for each nozzle, and a wide range of teaching application magnification is covered by the plurality of nozzles.

According to a fourth aspect of the present invention, there is provided a material coating method, wherein a magnification approximate to a coating magnification of the coating location belonging to a group corresponding to each nozzle is a coating magnification of a coating location belonging to the group. It is characterized by an average value.

According to a fifth aspect of the present invention, the inside of the container storing the viscous material is pressurized for a time obtained by multiplying the application magnification calculated according to the required application amount by the unit application time, In the material coating method of coating the viscous material in the container from the nozzle to the object to be coated, a trial shot recognition is performed to confirm that the coating amount of the viscous material coated from the nozzle is within a preset allowable range. The teaching application magnification, which is the application magnification at this time, is an average value of the application magnifications of all the application locations where the nozzle applies the material. By setting the average value of the application magnification of the application object as the teaching application magnification, the deviation between the application magnification and the taught application magnification in the actual application operation is reduced on average.

According to a sixth aspect of the present invention, the inside of the container in which the viscous material is stored is pressurized for a time obtained by multiplying the required application amount by the application magnification calculated according to the size and the unit application time, In the material coating method of coating the viscous material in the container from the nozzle to the object to be coated, a trial shot recognition is performed to confirm that the coating amount of the viscous material coated from the nozzle is within a preset allowable range. The step of setting a plurality of teaching application magnifications, which is the application application rate, and the number of the application locations for applying the material by the nozzles are the same as the number of the teaching application magnifications according to the required application amount of the application location. A plurality of teaching application magnifications among the plurality of set teaching application magnifications when performing a coating operation on the coating locations belonging to each group divided by the nozzle by the nozzle. And performing said the trial recognized by any of the teachings coating magnification closest to the coating ratio of the total coating portion belonging to a group, relates to a material application method characterized by having a. The variation in the coating amount is suppressed by performing the trial shot recognition by using the teaching coating magnification that is the closest to the actual coating magnification among the plurality of teaching coating magnifications set for each nozzle.

In the material coating method according to the present invention as defined in claim 7, a plurality of teaching coating magnifications set in the nozzle are
It is characterized in that each is set to an average value of the application magnification calculated according to the size of the required application amount of each application location belonging to each group divided into the same number.

According to the present invention of claim 8, a syringe for storing a viscous material, a pressurizing device for pressurizing the inside of the syringe, a nozzle for discharging the viscous material pumped by the pressurization to the outside, and an application target It is composed of an object-to-be-applied holding part for carrying in a body and holding it in a regulated manner, and a controller. Under the control of the controller, either or both of the nozzle and the object-to-be-applied holding part are moved to move the nozzle and Positioning is performed relative to the object to be coated, and the inside of the syringe is pressurized using the pressure device for a time obtained by multiplying the coating magnification calculated according to the size of the required coating amount by the unit coating time. In this way, the viscous material is ejected from the nozzle to apply the viscous material to the application position of the object to be applied, and the application amount of the viscous material ejected from the nozzle is set in advance. The teachings coating ratio is applied magnification when performing the trial recognition to ensure it is within the allowable range, to a material application device, characterized in that it comprises a teaching function for multiple sets for each of the nozzles. By setting a plurality of teaching application magnifications, it is possible to perform trial shot recognition by using a teaching application magnification that is similar to the actual application operation.

According to a ninth aspect of the present invention, a syringe for storing a viscous material, a pressurizing device for pressurizing the inside of the syringe, and a nozzle for discharging the viscous material pumped by the pressurization to the outside are provided. It is composed of an object-to-be-applied holding portion for carrying in and holding the object to be applied, and a controller. Under the control of the controller, either one or both of the nozzle and the object-to-be-applied holding portion are moved to move the nozzle. And relative to the object to be coated, and pressurizing the inside of the syringe using the pressurizing device for a period of time obtained by multiplying the coating magnification calculated according to the required coating amount by the unit coating time. A viscous material is ejected from the nozzle to apply the viscous material to the application position of the object to be applied, and the application amount of the viscous material ejected from the nozzle is set in advance. When determining the teaching application ratio, which is the application ratio when performing trial shot recognition to confirm that the application amount is within the allowable range, the application is calculated according to the size of the required application amount of all the application points input in advance. The present invention relates to a material coating apparatus having a teaching function of automatically creating the teaching magnification by averaging the magnifications. By setting the average value of the coating magnifications of the coating portions to be coated as the teaching coating magnification, the deviation between the coating magnification and the teaching coating magnification in the actual coating operation is reduced and the variation of the coating amount is suppressed.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION A material coating device and a material coating method according to each embodiment of the present invention will be described below.
For ease of explanation, an explanation will be given using an adhesive as the viscous material, an adhesive applying device as the material applying device, and a substrate as the object to be applied. Further, the same components as those described in the related art are designated by the same reference numerals.

A material coating method according to the first embodiment of the present invention and a material coating apparatus for carrying out the material coating method will be described with reference to the drawings. FIG. 1 is a flowchart showing each step of the material coating method according to this embodiment. In the figure, by starting teaching in step 1,
First, in step 2, one nozzle to be taught is determined. Next, in step 3, the teaching application magnification for the nozzle is set. The teaching application rate refers to the application rate when performing trial shot recognition for confirming that the application amount of the viscous material applied from the nozzle is within a preset allowable range as described above. In the material coating method according to this embodiment, it is possible to set two or more teaching coating magnifications for each nozzle, if necessary. The number of the teaching application magnifications can be arbitrarily set according to the fluctuation range of the required application amount at each application site where the material is applied. For example, when the nozzle applies material at a coating magnification of 1.0 and a coating magnification of 3.0, the teaching coating magnification is 1.
It can be set to two, 0 times and 3.0 times. When the coating magnification varies widely from 0.1 times to 4.0 times,
Teaching application magnification is, for example, 1.0 times, 2.0 times, 3.0 times,
You may set 4 times of 4.0 times. When there is a nozzle for applying a material with a coating magnification of only 1.0, it is of course possible to set only one of the coating magnifications of 1.0 as the teaching coating magnification for that nozzle as in the conventional case.

Next, in step 4, the allowable range of the coating amount is set for each teaching coating magnification. In the teaching data example shown in FIG. 2, the target coating area is 0.24 mm ² when the teaching coating magnification is 1.0, and the permissible range is set to ± 10%. If the allowable range is set to be narrow, the accuracy of the variation of the material coating amount is increased, but as described above, the number of times of trial shot recognition is increased in order to fit within the narrow allowable range. In the example shown in FIG. 2, the teaching application magnification is 2, 3,
The allowable variation width of the coating area is set to ± 10% when n is set, but it is also possible to set an arbitrary allowable range for each teaching coating magnification.

Returning to FIG. 1, the teaching operation is started from step 5 after the above setting. In step 6, the material for trial ejection is applied, and in step 7, the material for trial ejection is recognized to determine whether it is within the above-mentioned allowable range. If it is out of the allowable range, a measure for correcting the pressurization time of the air pressure is taken and the trial striking operation is performed again (step 6). If it is within the allowable range, the process proceeds to step 8 to set the coating condition in the controller 150 (see FIG. 5) of the material coating device as teaching data. Next, at step 9, it is judged whether or not the teaching data setting for another teaching application magnification is completed. If not completed, the setting is changed to the next teaching application magnification in step 12, and the application amount allowable range for the next teaching application magnification is set in step 13. Then, the procedure returns to step 6 to start the trial striking operation, and the steps described so far are repeated.

If it is determined in step 9 that the teaching data has been set for all the teaching application magnifications for the nozzle, the process proceeds to step 10, and the teaching operation similar to the above is performed for the other nozzles. When the teaching operation for all the nozzles mounted on the material coating device is completed, the teaching is completed in step 11.

In the material coating apparatus according to the present embodiment for carrying out the above material coating method, one nozzle is provided for each nozzle.
A function of teaching a plurality of teaching application magnifications is provided in place of the function provided conventionally for processing the teaching data of one teaching application magnification. This function includes a memory for inputting a plurality of teaching application ratios and an allowable range for them, and uses one of the teaching data by the plurality of teaching application ratios before performing the material application operation according to each application ratio. Check the amount of material applied.

For example, one nozzle of the material coating device is
It is assumed that the material coating operation is performed at various coating magnifications of 0.5 to 4.0. In this case, the teaching application magnification of the nozzle is set to two, for example, 1.0 times and 3.0 times, and has two teaching data. Then, the application magnification of the application site to be applied is 0.5.
When performing the coating operation from 2 times to less than 2.0 times, the test coating is recognized by using the teaching data of the teaching coating magnification of 1.0 times, and the material coating is performed after confirming that the coating amount is within the allowable range. Start operation. Then, when performing a coating operation with a coating magnification of 2.0 to 4.0, the same test trial recognition is performed using teaching data with a teaching coating magnification of 3.0, and then the material coating operation is performed. Shall start.

FIG. 3 shows the coating amount (coating area mm ² ) at each coating magnification when the material coating is performed by performing the two teaching operations of the coating magnifications of 1.0 and 3.0 as described above.
Represents the variation of. Similar to FIG. 11, the horizontal axis represents the coating magnification (times), the vertical axis represents the coating area (mm ² ), and the two line graphs show the maximum value (◯) of the results obtained by measuring a plurality of coating areas for each coating magnification. And the minimum value (●). Therefore, the width in the vertical direction of the both line graphs shows the variation of the coating area. The broken line in the figure indicates the dispersion of the coating area at each coating magnification when the test shot recognition is performed only with the teaching coating magnification of 1.0 times according to the conventional technique (displayed in FIG. 11).
Are shown for comparison.

As is apparent from FIG. 3, according to the material coating method of the present embodiment, the teaching coating magnification is set to two, 1.0 times and 3.0 times. The coating amount is controlled to be within an allowable range (± 10% in the illustrated example) at 0.0 times and 3.0 times. If the application ratio is between 2.0 and 4.0, the teaching application ratio will be 3.0.
The trial hit recognition is performed using the teaching data of.
Therefore, although the coating area tends to increase as the coating magnification increases or decreases from 3.0 times in both directions, the variation can be suppressed to a slight extent. The effect of reducing the dispersion of the coating area is more remarkable especially in the region where the coating magnification is as high as 3.0 times or 4.0 times as compared with the case where the teaching coating magnification according to the prior art shown by the broken line is only 1.0 times. is there.

In the example shown in FIG. 3, the number of teaching application magnifications is set to two, 1.0 times and 3.0 times, but this is, for example, 1.0 times and 2.5 times. The number may be three, such as 4.0 times, or more. It is clear that the accuracy of the coating area improves as the number of teaching coating magnifications increases. However, as the number of teaching application magnifications increases, the number of teaching operations required increases, and the memory capacity of the controller also needs to increase. It is preferable to set an appropriate number of teaching application magnifications in consideration of the required accuracy of application amount and productivity.

Next, a material applying apparatus and a material applying method according to a second embodiment of the present invention will be described. In the material applying method according to the present embodiment, the teaching magnification is set to 1.0 times as in the prior art, and the teaching application magnification is set to a magnification close to the application magnification used in the actual coating operation. It is set so that the variation in the applied amount is suppressed as much as possible. Specifically, the average value of the application magnification calculated according to the size of each required application amount input as data when each nozzle performs the application operation is calculated, and the average value of the application magnification is It should be used as the teaching application magnification of the nozzle. For example, in an adhesive application device that applies an adhesive to an object to be adhered for adhering components, the application magnification calculated according to the required application amount of the application locations corresponding to all the components for which the nozzle performs an application operation. Then, the average value is obtained, and this average value is used as the teaching application magnification of the nozzle.

FIG. 4 is a flow chart showing each step when the material applying method according to the present embodiment is applied to the adhesive applying device for applying the adhesive for bonding the above-mentioned components. In the figure, after starting the data teaching in step 1, the nozzle to be taught is first determined in step 2. Next, in step 3, the application magnification of each application location is searched and grasped from all the data of the parts for which the nozzle applies the material. In the material coating device, the controller 150 manages all target component data. All the coating magnifications set in this component data are searched, and in step 4, the average value of the coating magnifications is calculated based on the search result. Then, this average value is set as the teaching application magnification in the trial shot recognition. Each operation after the trial shot recognition operation in step 5 after setting the teaching application magnification is the same as that of the conventional technique.

According to the material coating method according to the present embodiment, the teaching coating magnification for trial shot recognition is set to the average value of the coating magnification calculated according to the required coating amount of each coating location which is available in advance. Therefore, the material application in each application operation can be carried out at an application rate that is close to the teaching application rate on average. As a result, in the prior art, the teaching application ratio is uniform (for example, 1.0) regardless of the actual application amount.
It is possible to reduce the variation in the coating area as a whole, as compared with the case where the material coating is carried out with the setting of (2 times). Further, as compared with the material coating method of setting a plurality of teaching magnifications according to the first embodiment, it is not necessary to increase the number of teaching coating magnifications, and therefore, it is not necessary to add teaching operation or increase memory capacity. Moreover, it is possible to realize the material application that efficiently increases the application amount accuracy.

Next, a material coating method according to the third embodiment of the present invention will be described. The material coating method according to the above-described second embodiment can sufficiently obtain the effect of reducing the variation in the coating amount as compared with the method according to the conventional technique, but since the teaching coating ratio is only one, this teaching When the coating operation is performed with a coating magnification apart from the coating magnification, the variation in the coating amount may exceed the allowable range. In the material coating method according to the present embodiment, in order to further improve this situation, all of the coating points that have been input as data in advance are set in accordance with the required coating amount.
One or more groups are set, and multiple teaching application ratios are set using the average value of the application ratio calculated from the size of the required application amount of each application point belonging to each group. is there.

Assuming, for example, that the application points for all target parts are divided into two groups in an adhesive application device for the purpose of adhering parts, first, according to the size of the application amount required for the application points for each part. All application locations are ranked and divided into two groups, one with a large required application amount and the other with a small required application amount. Next, the average value of the coating magnifications calculated from the respective coating amounts is obtained for each group, and each average value is set as the teaching coating magnification of each group. When performing the coating operation, test shot recognition is performed based on the teaching coating magnification of the group to which the corresponding target component belongs, and material coating is performed if the coating amount at that time falls within the set allowable range. .

That is, in the material coating method according to the present embodiment, when setting two or more teaching coating magnifications in the first embodiment, two teachings with appropriate differences are set. Instead of arbitrarily setting the coating magnification or a teaching coating magnification of more than that, the average of each group divided into several groups according to the size of the coating amount when each nozzle actually performs the coating operation. Is set as the teaching application magnification. Therefore, it is more likely that the coating magnification when actually performing the coating operation will be a value that approximates each teaching coating magnification, and it is possible to suppress variations in the coating amount as much as possible.

The above-described grouping of parts may be two or more depending on the variation of the coating magnification, but as the number of groups increases, the number of teaching coating magnifications also increases. The operation is added and it is necessary to increase the memory capacity of the controller.
This is the same as the case of the embodiment. In addition, the above-described grouping into two groups is performed by, for example, arranging the target application locations in order from the one having the highest application magnification, and dividing the application locations so that the number of target application locations is even between both groups. It is also possible to use another grouping method according to the size of the.

Next, a material coating method according to the fourth embodiment of the present invention will be described. The material applying device usually has a plurality of nozzles for applying a material such as an adhesive to an object to be coated. For example, the example of the material coating device shown in FIGS. 5 and 6 has three nozzles. In the component mounting method according to the present embodiment, one different teaching application magnification is set for each of the plurality of nozzles, and when applying the material, the application magnification set according to the size of the required application amount at the application location. The coating operation is performed using a nozzle having a teaching coating magnification that is closest to the above.

Specifically, the nozzle A,
It is assumed that three nozzles B and C are mounted. In this case, for example, the nozzle A has a teaching application magnification of 1.0.
The nozzle B has a teaching application magnification of 2.5 times, and the nozzle C has a teaching application magnification of 3.5. Then, the nozzle A applies the material to the coating portion where the coating magnification is 0.1 to 2.0 times, and similarly, to the coating portion where the coating magnification is 2.0 to 3.0 times. On the other hand, it is assumed that the nozzle B performs the material coating by the nozzle C, and the nozzle C performs the material coating at the coating location where the coating magnification is 3.0 times to 4.0 times.

With the above structure, each nozzle covers the entire coating magnification range from 0.1 times to 4.0 times, as compared with the case where each nozzle covers the coating magnification range. Is subdivided, and the application amount can be easily managed. That is, since three teaching application magnifications are set in total by three nozzles, it is sufficient to set only one teaching application magnification for one nozzle as in the prior art, and moreover, as a whole, a wide range of coating application magnifications can be set. It is possible to cover the area with high coating accuracy. Therefore, the teaching operation can be simplified to one for each nozzle while having a plurality of teaching application magnifications as a whole. As a result, it is not necessary to take measures such as increasing the memory capacity, and efficient and highly accurate material application can be realized.

In this case, it is preferable that the teaching coating magnification for each nozzle and the target coating magnification range are as close as possible. As an example, all the coating locations to be coated are arranged in descending order of coating magnification, and from the largest coating area, 1/3 is the nozzle A, the next 1/3 is the nozzle B, and the remaining 1/3 is the nozzle C. Responsible. And
The average value of the application magnifications calculated according to the size of the required application amount of the application location of each nozzle may be used as the teaching application magnification of the nozzle. Alternatively, the material application amount of each nozzle is evenly distributed in descending order of the application ratio (the higher the application ratio is, the more the material application amount per application point is), and the material application operation is performed in accordance with the progress of the material application operation. Grouping may be performed so that the remaining amount of material in the syringe corresponding to the nozzle is approximately equalized.

Although the respective embodiments according to the present invention have been described by using the adhesive as the viscous material and the adhesive applying device as the material applying device by way of example, the application of the present invention is applicable to the adhesive applying device. It is not limited. For example, cream solder, welding agents such as silver paste, sealing agents, underfill agents, and other fillers that have a viscosity that does not flow out of the nozzle due to their own weight, such as fillers It can be widely applied to a material coating device used for coating at a predetermined position.

[0054]

As described above, according to the material coating method and the material coating apparatus according to the present invention in which a plurality of teaching coating magnifications are set for each nozzle for coating the material, the calculation is performed according to the required coating amount. Since each coating amount is managed by the test shot recognition using the teaching coating ratio that is similar to the coating ratio, the variation in the coating amount can be reduced as much as possible. At this time, the coating operation is carried out by dividing the coating object into several groups according to the size of the coating amount and setting the average value of the coating magnifications of the coating objects belonging to each group as the respective teaching coating magnifications. In this case, the coating magnification and the teaching coating magnification can be approximated on average, and the accuracy of the coating amount can be improved.

Further, according to the material coating method and the material coating apparatus of the present invention in which the average value of the coating magnifications calculated according to the required coating amount is set as the teaching coating magnification, it is set for each nozzle. Since one taught coating magnification to be applied is approximately the same as the coating magnification when the actual coating operation is performed, the variation width of the coating amount can be minimized without increasing the number of teaching coating magnifications as compared with the conventional technique. Can be reduced.
When a plurality of nozzles are used in one material coating device, one teaching coating magnification is set for each nozzle, and each coating operation is performed in accordance with the required coating amount. The accuracy of the coating amount can be improved by performing the process with a nozzle having a teaching coating magnification that is close to the calculated coating magnification.

[Brief description of drawings]

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

2 is a table showing an example of teaching data of the material coating method shown in FIG.

FIG. 3 is a table showing improvement effects by the material coating method shown in FIG.

FIG. 4 is a flowchart showing a material coating method according to another embodiment of the present invention.

FIG. 5 is a perspective view showing an overview of a material coating device.

6 is a partially enlarged perspective view showing a material coating head portion of the material coating apparatus shown in FIG.

7 is a partial cross-sectional side view showing a main part of the material application head part shown in FIG.

FIG. 8 is a perspective view showing an object-to-be-coated holding portion of the material applying apparatus shown in FIG.

FIG. 9 is an explanatory diagram showing a situation of a change in coating amount according to a conventional technique.

FIG. 10 is a flowchart showing a material coating method according to a conventional technique.

FIG. 11 is a table showing variations in coating area according to a material coating method according to a conventional technique.

FIG. 12 is a flowchart showing a procedure of test shot recognition in the material coating method according to the conventional technique.

[Explanation of symbols]

100. Adhesive application device, 101. Trial tape,
102. Adhesive, 110. Adhesive application head, 1
12. A nozzle, 113. A syringe, 118. Recognition camera, 140. Object-to-be-coated holding portion 141. Object to be coated,
144. Positioning reference mark, 150. controller.

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) // H05K 3/34 504 H05K 3/34 504D 505 505B (72) Inventor Hitoshi Nakahira 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric industrial Co., Ltd. in the F-term (reference) 4D075 AC07 AC78 AC93 AC94 AC95 DA06 DC21 EA05 EA09 EA14 EA35 EB01 4F035 AA04 BA02 BA22 BB02 BB03 CA01 CA05 CB03 CB13 CB26 4F041 AA02 AA05 AB02 BA04 BA22 BA34 4F042 AA02 AA06 AB01 BA02 BA06 BA08 CB03 CB10 DH09 5E319 BB05 CD27

Claims (9)

[Claims] 1. A container in which a viscous material is stored is pressurized for a time obtained by multiplying an application magnification calculated according to the size of a required application amount by a unit application time, and the viscous material in the container is nozzled. In the material coating method for coating the object to be coated from the above, the teaching coating which is the coating magnification when performing the trial shot recognition for confirming that the coating amount of the viscous material coated from the nozzle is within the preset allowable range. A plurality of magnifications are set for each nozzle, and among the plurality of teaching application magnifications set when performing the coating operation with the nozzles, the closest to the application magnification calculated according to the size of the target required coating amount. The material coating method, wherein the trial shot recognition is performed according to any one of the teaching coating magnifications. 2. The application points targeted for material application by the nozzle are divided into a plurality of groups according to the required application amount of the application points, and the application magnification of the application points belonging to each group is calculated. The material coating method according to claim 1, wherein the average value is calculated, and an average value of the calculated coating magnifications of the respective groups is set as the plurality of teaching coating magnifications of the nozzle. 3. A plurality of containers storing viscous materials are pressurized for a time obtained by multiplying a unit application time by an application magnification calculated for each required application amount according to the size, and the inside of each container is pressurized. In a material applying method of applying a viscous material to an object to be coated from nozzles respectively coupled to each of the plurality of containers, all application points targeted for material application by the plurality of nozzles are required application amounts of the application points. According to the size of the number of the nozzles into the same number of groups, one of the plurality of containers corresponding to each of the plurality of groups and the nozzles coupled to it The teaching application ratio, which is the application ratio when performing the test shot recognition for confirming that the application amount of the viscous material applied from each nozzle is within the preset allowable range, A material coating method characterized in that the nozzles are set to a magnification that is similar to the coating magnification of the coating location belonging to the corresponding group. 4. A magnification that is similar to a coating magnification of the coating location belonging to a group corresponding to each nozzle is an average value of coating magnifications of coating locations belonging to the group. The method for applying a material as described in. 5. A viscous material in a container is pressurized by a time obtained by multiplying a unit application time by a coating magnification calculated according to a required coating amount according to a size, and the viscous material in the container is nozzled. In the material coating method for coating the object to be coated from the above, the teaching coating which is the coating magnification when performing the trial shot recognition for confirming that the coating amount of the viscous material coated from the nozzle is within the preset allowable range. The material application method, wherein the magnification is set to an average value of the application magnifications of all the application locations where the nozzle applies the material. 6. A viscous material is stored in a container, and the viscous material in the container is pressurized by pressurizing for a time obtained by multiplying a unit application time by a coating magnification calculated according to a required coating amount according to a size. In the material coating method for coating the object to be coated from the above, the teaching coating which is the coating magnification when performing the trial shot recognition for confirming that the coating amount of the viscous material coated from the nozzle is within the preset allowable range. A step of setting a plurality of magnifications, and a step of dividing the application locations targeted for material application by the nozzles into groups of the same number as the number of the teaching application magnifications according to the size of the required application amount of the application locations, When performing the coating operation on the coating locations belonging to each of the groups divided by the nozzle, all the coating locations belonging to the group among the plurality of set teaching coating magnifications. The test application recognition is performed by using one of the taught application application rates that is closest to the application application rate. 7. A plurality of teaching application magnifications set for the nozzles, the average value of the application magnifications calculated according to the size of the required application amount of each application location belonging to each group divided into the same number. 7. The material coating method according to claim 6, wherein the material coating method is set for each of the above. 8. A syringe for storing a viscous material, a pressurizing device for pressurizing the inside of the syringe, a nozzle for discharging the viscous material pressure-fed by the pressurization to the outside, and an object to be coated is carried in and held in a regular manner. It is composed of an object holding part and a controller, and relative positioning of the nozzle and the object is performed under the control of the controller, and is a unit of the application magnification calculated according to the size of the required application amount. In a material coating device that pressurizes the inside of the syringe using the pressure device only for a time obtained by multiplying a coating time, discharging a viscous material from the nozzle to apply the viscous material to a coating position of the object to be coated, The teaching application ratio, which is the application ratio when performing the test shot recognition for confirming that the application amount of the viscous material discharged from the nozzle is within the preset allowable range, is A material coating apparatus having a teaching function of setting a plurality of pieces for each cheat. 9. A syringe for storing a viscous material, a pressurizing device for pressurizing the inside of the syringe, a nozzle for discharging the viscous material pressure-fed by the pressurization to the outside, and an object to be coated is carried in and held in a regular manner. It is composed of a target object holding unit and a controller, and the relative positioning of the nozzle and the target object is performed under the control of the controller, and the unit coating time is set to the coating magnification calculated according to the required coating amount. In a material coating device that discharges a viscous material from the nozzle to apply to the coating position of the object to be coated by pressurizing the inside of the syringe using the pressure device for a time obtained by multiplying When setting the teaching application ratio, which is the application ratio when performing test shot recognition to confirm that the application amount of the viscous material is within the preset allowable range, enter it in advance. A material coating apparatus having a teaching function for automatically creating the teaching coating magnification by averaging the coating magnifications calculated according to the magnitudes of the required coating amounts of all applied coating locations.