JP2004195291A - Setup apparatus of glue dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air bleeding method by which air incorporated in a glue dispenser 1 is easily removed and an air bleeding judgement method for the glue dispenser 1 for judging whether air is accurately removed or not. <P>SOLUTION: An apparatus for applying glue which has the glue dispenser 1 is provided with a setup unit 2 composed of a plate 22, a closing cover 23 and a vessel 24 for waste. The air bleeding method is composed of a process for stopping the discharge action for the glue once after the glue is filled up to a discharge port 4a and replacing the glue in a bubble retained part 10, a process for increasing the pressure of the glue in the bubble retained part 10, and a process for replacing the glue. The air bleeding judgement method is composed of a process for continuously carrying out the coating action for the glue, a process for carrying out 2 shots of coating action after the coating action of the glue is stopped and comparing the coating area of the glue between 2 shots. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
In the process of manufacturing an electronic substrate by mounting electronic components on a substrate, the application of an adhesive for mounting the electronic components on the substrate, the application of cream solder for conducting the electronic components and the substrate, and the interface of the solder are performed. In many processes, glue is applied by a glue dispenser, such as application of a flux for activation and application of a resin for protecting and insulating an electronic component mounted on a substrate.
When air stays in the glue dispenser as air bubbles, the air bubbles are compressed and become small, so that an insufficient amount of coating occurs. If the application is further continued, the air bubbles become in a stable state in a compressed state. However, once the application operation is stopped, the air bubbles expand, so that the application amount at the first point after the restart of the application operation becomes excessive.
The present invention relates to an air bleeding method, an air bleeding determination method, and a program having such a function, which are generated when air stays in a glue dispenser, to prevent an accident such as an excessive or insufficient coating amount. The present invention relates to a setup device and a glue coating device.
[0002]
[Prior art]
An ordinary glue dispenser employs a method of refilling the glue by replacing a component called a syringe filled with glue. Further, the amount of glue filled in the needle portion of the glue dispenser is small in quantity and easily touches air, so that it is easily deteriorated. For this reason, it is necessary to disassemble and clean the needle and screw portions at predetermined time intervals (hereinafter simply referred to as "cleaning").
When the syringe is replaced or cleaned, air enters into the glue dispenser and stays in the glue dispenser, and if the coating operation is performed as it is, there is a problem that an accident such as an excessive or insufficient coating amount occurs.
In the past, since the air was vented manually or manually by the operator, a large amount of glue was discarded wastefully, and trial application without effect was repeated many times, so that the air was efficiently vented. Could not.
In addition, it is not easy to determine whether or not air has been properly vented, and it is dependent on the skill of the operator. Therefore, if the proper determination is not made, defective products due to glue coating quality will be generated. Had a problem.
[0003]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problem, and provides an air bleeding method that can easily remove air that has entered a glue dispenser when a syringe is replaced or cleaned. It is in.
Another object of the present invention is to provide a determination method to be used after performing the air release according to the air release method, wherein the air release determination method of the glue dispenser which can easily determine whether the air release has been correctly performed. To provide.
Another purpose is to remove air from a large amount of glue and avoid unnecessary work, such as repeating ineffective test application many times. It is intended to be able to be easily performed.
Another object of the present invention is to provide a glue dispenser setup unit, a glue dispenser setup program, a glue dispenser setup device, and the like for performing such an air bleeding method and a determination method.
It is another object of the present invention to provide a glue applying apparatus having such a glue dispenser set-up apparatus, which does not cause an accident such as an excessive or insufficient amount of application and always performs proper application.
[0004]
[Means for Solving the Problems]
The glue dispenser has a configuration in which the screw itself is rotated to discharge the glue, and a configuration in which the screw itself is not rotated and the outer casing is rotated to discharge the glue. This is because the glue can be discharged by relatively rotating the screw and the casing around the screw.
Therefore, in the present specification, the meaning of "rotate the screw" literally includes the meaning of "rotating the screw" and also the meaning of "rotating the outer casing relative to the screw".
A setup unit according to the present invention is a setup unit including a member to be coated, a closing lid, and a waste container, which is provided in a glue coating device having a glue dispenser movable in three axial directions.
The material to be coated is preferably not particularly limited to materials such as metal, resin, and paper. In addition, a plate having a fixed shape and a movable function, a plate having a moving function, and an outer periphery of a rotatable roller, or a flexible material is used. The members to be coated may be sequentially unwound and then wound up after application, and the shape and configuration are not particularly limited.
The member to be coated is used to perform a trial driving of the glue, and preferably has an area in which the position can be changed so that the glue can be coated ten times or more. The color of the member to be applied is not limited. Generally, it is preferable that the color is white, but it is preferable that the contrast with the color of the glue is clear.
The closing lid covers the discharge port of the needle of the glue dispenser, and if it has a function to prevent the discharge of glue when performing the discharge operation, a rubber plate, a seal ring such as an O-ring, a packing, etc. It is not particularly limited.
The waste container may be any container that can receive and store the glue discharged from the glue dispenser.
[0005]
A method for removing air from the glue dispenser will be described. The time that can be used as a guide for each process is described below as much as possible. However, since the values vary depending on conditions such as temperature, humidity, and glue characteristics, the settings are made in accordance with each condition.
First, a step of performing a glue discharge operation and filling the glue up to the discharge port of the glue dispenser is performed. Since the time required to fill the glue differs depending on the size and structure of the glue dispenser, it is preferable to measure the required time by actually performing the trial.
Subsequently, a step of temporarily stopping the glue discharge operation is performed. The stop time is preferably about 2 seconds. Bubbles have a lower specific gravity than the glue and float when the glue stops flowing. The stop time of about 2 seconds is a time for bubbles that have been pressed against the walls and corners by the flow of the glue to flow away from the walls and corners.
Subsequently, a step of exchanging the glue in the bubble retaining portion is performed. This is for discharging the bubbles fluidized in the above step together with the glue in the bubble retaining portion.
Further, a step of increasing the pressure of the glue in the bubble retaining portion is performed. This is because the pressure of the glue is increased by performing the discharging operation in a state where the discharge port is closed with the closing lid, and the bubbles that cannot be removed are forcedly fluidized and pushed to the tip of the glue dispenser.
Subsequently, a step of exchanging the glue in the bubble retaining portion is assumed. This is because the bubbles that have been forcibly fluidized in the above process and pushed to the tip of the glue dispenser are discharged together with the glue.
[0006]
Next, a method of determining air release of the glue dispenser will be described. First, a step of continuously performing a glue coating operation is performed. The number of times of continuous application is preferably about 8 to 12 points. When air stays inside the glue dispenser, the air bubbles are compressed by performing the glue coating operation continuously, and the compressed state is stabilized.
Subsequently, a step of stopping the glue coating operation is performed. The stop time is preferably about 3 seconds. If air stays inside the glue dispenser, the air bubbles are released from the pressure and expanded during this time.
Subsequently, a step of continuously performing at least two points of the coating operation is performed. If air stays in the glue dispenser, the amount of glue applied after stopping will be excessive, but if air does not stay in the glue dispenser, the proper amount of glue will be maintained. This is because the presence or absence of air stagnation can be determined by continuously performing application at two points.
Further, a step of calculating the application area of each of the applied glue images and a step of comparing the application areas of the glue are performed. When the difference between the first and second application areas is small when the application is performed at two points, the average value of the application area at the first point and the application area after the second point is obtained when the application is performed at three or more points. If the difference is small, it can be determined that the air in the glue dispenser has escaped properly.
In addition, there is provided a glue dispenser setup method characterized in that after the air of the glue dispenser is released by the above-described air release method, the air release of the glue dispenser is determined by the above-described air release determination method.
[0007]
Further, in a glue coating apparatus having a computer, the program causes the computer to execute the following steps,
Rotating the screw of the glue dispenser for a predetermined time, filling the glue up to the discharge port of the glue dispenser,
A step of stopping the screw for a predetermined time, and giving a time for bubbles to flow away from a wall or a corner,
Rotating the screw again for a predetermined time, discharging the fluidized bubbles together with the glue of the bubble retaining portion,
Pressing the discharge port of the needle against the closing lid, and rotating the screw for a predetermined time in a state where the discharge port of the needle is pressed against the closing lid, and increasing the pressure of the glue in the bubble retaining portion. Forcibly fluidizing bubbles that cannot be removed by the above and pushing them out to the needle tip,
A step of closing the discharge port of the needle from the lid, and a step of rotating the screw for a predetermined time in a state where the discharge port is released, and a step of discharging bubbles forcedly fluidized by the step together with the glue; And a glue dispenser air bleeding program.
Further, in a glue coating apparatus having a computer, a program that causes the computer to execute the following steps,
A step of performing a continuous application of glue a predetermined number of times, and a step of compressing bubbles to a stable state when air stays inside the glue dispenser,
Stopping the coating operation for a predetermined time, releasing air bubbles from the pressure when the air stays inside the glue dispenser to inflate, and performing continuous glue coating at least two points again;
A glue dispenser, comprising the steps of taking images of at least two glues on which the continuous coating has been performed, calculating the glue coating area from the image data, and comparing the coating areas. Of the air release judgment program.
Further, a glue dispenser setup program including the above-described air bleeding program and air bleeding determination program is provided.
Still further, a glue dispenser set-up device including the set-up unit, a computer, and a program recorded in a main storage device of the computer, the program being any one of the above-described devices, and having such a set-up device And a glue coating device.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, one embodiment of the present invention will be described with reference to the drawings. The glue coating apparatus according to the present embodiment includes a glue dispenser 1 and a setup unit 2 that are movable in three axial directions of an X axis and a Y axis in a horizontal direction and a Z axis in a vertical direction.
The glue dispenser 1 includes a needle 4 having a discharge port 4a at a lower end, a body 9 mounted on an upper portion of the needle 4, and a syringe 5 mounted on the body 9 and filled with a glue 6 to form an integral container. Configured.
The screw 7 is disposed in the body 9, and the glue is pushed out toward the discharge port 4 a by the driving of the drive unit 8. An air pipe (not shown) was provided above the syringe 5 and connected to a pressure source having a gauge pressure of 98 KPa (kilopascal).
The setup unit 2 was composed of a white plate 22, a closing lid 23 made of a rubber plate, and a cylindrical waste container 24.
In the method for bleeding air from the glue dispenser according to the present embodiment, the glue dispenser 1 is positioned on the waste container 24 in advance, and the screw 7 is rotated while the syringe 5 is pressurized by the pressure source to perform the glue discharge operation in 10 minutes. This is a step performed for seconds.
Subsequently, the syringe 5 is shut off from the pressure source and released to the atmosphere, and the screw 7 is stopped to stop the glue discharge operation for 2 seconds.
Subsequently, the syringe 5 is pressurized by a pressure source, and the screw 7 is rotated to perform a glue discharge operation for 7 seconds.
Subsequently, with the syringe 5 pressurized, the glue dispenser 1 is moved to close the discharge port 4a and pressed against the lid 23, and the screw 7 is rotated to perform a glue discharge operation for 10 seconds.
Subsequently, the glue dispenser 1 is positioned on the waste container 24 while the syringe 5 is kept pressurized, and the screw 7 is rotated to perform a glue discharge operation for 10 seconds.
[0009]
The method of determining the air release of the glue dispenser is a process of continuously performing the glue application operation at 10 points while changing the position on the surface of the plate 22.
Subsequently, the glue coating operation is temporarily stopped for 3 seconds.
Subsequently, a step of changing the position on the surface of the plate 22 and performing two consecutive coating operations is performed.
Subsequently, a step of taking images of the two applied glues with a CCD camera is performed.
Further, the application area is calculated from the image data of the two points of glue taken.
Then, a step of comparing the application areas at the two points will be described.
In the step of comparing data, the range of {0.8 ≦ S2 / S1 ≦ 1.2} where S1 is the application area of the first point and S2 is the application area of the second point after stopping for 3 seconds. In this case, it is determined that the air bleeding is completed. In other cases, it is determined that the air bleeding is defective.
After the air of the glue dispenser is released by the above-described air release method, the release of the air of the glue dispenser is determined by the above-described air release determination method.
When the air bleeding is completed, the process proceeds to the glue application step, and when the air bleeding is defective, the glue dispenser is set up so that the air bleeding step and the air bleeding determination step are performed again.
[0010]
Further, the air bleeding program of the glue dispenser is a program that causes a computer to execute the following steps in the glue dispensing apparatus.
A step of rotating the screw 7 and performing the glue discharge operation for 10 seconds while the syringe 5 is pressurized by the pressure source.
Subsequently, a step of shutting off the syringe 5 from the pressure source and releasing it to the atmosphere, stopping the screw 7 and stopping the glue discharge operation for 2 seconds.
Subsequently, a step in which the syringe 5 is pressurized by a pressure source and the screw 7 is rotated to perform a glue discharge operation for 7 seconds.
Further, a step of moving the glue dispenser 1 while keeping the syringe 5 pressurized, closing the discharge port 4a and pressing it against the lid 23, and rotating the screw 7 to perform the glue discharge operation for 10 seconds.
Then, the glue dispenser 1 is positioned on the waste container 24 while the syringe 5 is being pressurized, and the screw 7 is rotated to perform the glue discharge operation for 10 seconds.
On the other hand, the air release determination program for the glue dispenser is a program that causes a computer to execute the following steps in the glue coating device.
First, a step of continuously performing glue application operation at 10 points.
Subsequently, a step of temporarily stopping the glue application operation for 3 seconds.
Subsequently, a step of continuously performing the coating operation at two points.
Subsequently, a step of taking images of the two applied glues with a CCD camera, respectively.
And calculating an application area from each of the captured two glue images.
Subsequently, a step of comparing the two application areas.
In the data comparing step, as described above, the judgment of completion of air bleeding is made when it is in the range of {0.8 ≦ S2 / S1 ≦ 1.2}, and the judgment of air bleeding failure is made in other cases. It was taken.
Further, a glue dispenser setup program including the above-described air bleeding program and air bleeding determination program is provided.
Still further, a glue dispenser set-up device including the set-up unit, a computer, and a program recorded in a main storage device of the computer, the program being any one of the above-described devices, and having such a set-up device And a glue coating device.
[0011]
The present invention is configured as described above, and its operation will be described below. The air release or the air release determination according to the present invention is performed when the syringe 4 is replaced with a new syringe 5 or when the needle 4 or the screw 7 is disassembled and cleaned.
In the step of performing the glue discharge operation for 10 seconds in the embodiment of the air bleeding method of the present invention, the glue starts to be discharged from the discharge port 4a after filling the inside of the glue dispenser 1.
Subsequently, in a step of stopping the screw 7 and stopping the glue discharge operation for 2 seconds, the bubbles remaining in the walls and the corners in the compressed state are released and flow.
Subsequently, in a step of rotating the screw 7 and performing a glue discharge operation for 7 seconds, the bubbles fluidized in the above step are discharged together with the glue in the bubble retaining section 10.
Subsequently, in a step of performing a discharge operation for 10 seconds in a state in which the discharge port 4a is closed by the closing lid 23, the air bubbles that cannot be removed as described above are forcibly fluidized and pushed toward the discharge port 4a of the needle 4.
Subsequently, a step of performing a glue discharge operation for 10 seconds and replacing the glue in the bubble retaining section 10 discharges the bubbles forcedly fluidized in the above step together with the glue.
In the present embodiment, the operations of filling the glue and actually discharging the glue are set to 10 seconds, 7 seconds, 10 seconds, and the like, respectively. However, these times are different depending on the size and structure of the glue dispenser. It is preferable to measure the time and determine it appropriately.
In addition, since the glue dispenser 1 is previously positioned on the waste container 24 to perform the operation of filling the glue or actually discharging the glue, the glue discharged from the discharge port 4a is collected in the waste container 24. You.
[0012]
When air stays inside the glue dispenser 1 by the process of performing the glue dispensing operation in the glue dispenser 1 in the method for judging the air release of the glue dispenser 1, the bubbles are compressed to be in a stable state.
Subsequently, in the step of stopping the glue application operation for 3 seconds, when air stays inside the glue dispenser, the bubbles are released from the pressure and expanded.
Subsequently, the coating operation is continuously performed at two points, images of the applied two points of glue are captured by a CCD camera, and a coating area is calculated from the captured images of the two points, and the coating area of the two points is calculated. And compare the calculated data.
If air stays in the glue dispenser, the amount of glue applied after stopping will be excessive, but if air does not stay in the glue dispenser, the proper amount of glue will be maintained. By performing continuous application at two points, the presence or absence of air stagnation can be determined.
In the case where three or more glues are continuously applied after performing the glue continuous application operation, the first coated area is S1 and the second and subsequent coated areas are S2 to Sn. At this time, when it is in the range of {0.8 ≦ S2−Sn = Sen ≦ 1.2}, it is sufficient to determine that the air bleeding is completed, and otherwise to determine the air bleeding failure. .
[0013]
【The invention's effect】
According to the present invention, an air bleeding method capable of easily bleeding air that has entered the glue dispenser can be provided.
Further, according to the present invention, it is possible to provide a method for determining air release of a glue dispenser, which can easily determine whether or not air release has been correctly performed.
Also, according to the present invention, it is easy for an inexperienced worker to remove air and make judgment work without wasteful work such as wasteful disposal of a large amount of glue or repeated trial application without effect. You can now do what you want.
Also, a glue dispenser setup unit, a glue dispenser setup program, a glue dispenser setup device, and the like for performing such an air bleeding method and a determination method can be provided.
In addition, a glue coating device having such a glue dispenser set-up device can be provided, which does not cause an accident such as an excessive application amount or an insufficient application amount and always performs appropriate application. .
[Brief description of the drawings]
FIG. 1 is a sectional front view showing the structure of an embodiment of a glue dispenser.
FIG. 2 is a plan view of one embodiment of a setup unit according to the present invention.
FIG. 3 is a process diagram of one embodiment of an air bleeding method according to the present invention.
FIG. 4 is a process diagram of one embodiment of the air vent determination method according to the present invention.
[Explanation of symbols]
1: Glue dispenser 2: Setup unit 4: Needle 4a: Discharge port 5: Syringe 6: Glue 7: Screw 8: Drive unit 9: Body 10: Bubble retention unit 22: Plate 23: Cover lid 24: Waste container

Claims (10)

A set-up unit used for setting up a glue dispenser that applies an adhesive, cream solder, flux, resin, etc. (hereinafter simply referred to as "glue"), and includes a member to be coated, a closing lid, and a waste container. . This is a method for bleeding air from a glue dispenser, which includes a step of performing a glue discharge operation with a discharge port of the glue dispenser closed, and a portion where bubbles easily stay in the glue dispenser (hereinafter, simply referred to as a “bubble retaining portion”). A) a method for removing air, which comprises the step of increasing the pressure. A step of performing a glue discharging operation to fill the glue up to a discharge port of the glue dispenser; a step of temporarily stopping the glue discharging operation after the filling of the glue; a step of replacing the glue of the bubble retaining portion; And a step of exchanging the glue in the bubble retaining portion. A step of continuously performing the glue coating operation, a step of temporarily stopping the glue coating operation, a step of continuously performing the coating operation at least two points, and capturing the applied glue images of at least two points, respectively. And a step of comparing the calculated glue application area with a glue dispenser. After the air of the glue dispenser is evacuated by the air bleeding method according to any one of claims 2 and 3, the air bleeding determination method according to claim 4 determines the air bleeding of the glue dispenser. How to set up a glue dispenser. The glue dispenser is prepared in advance by any one of the air bleeding method described in claim 2 or claim 3, the air bleeding determination method described in claim 4, or the setup method described in claim 5. A method of manufacturing an electronic substrate, comprising applying a glue using the glue dispenser later. In a glue coating apparatus having a computer, a program that causes the computer to execute the following steps,
Performing a continuous application of the glue a predetermined number of times, stopping the application operation for a predetermined time, and performing a continuous application of the glue at least two points again;
A step of capturing images of at least two points of the glue subjected to the continuous application, a step of calculating a coating area of the glue from the image data, and a step of comparing the calculated coating areas. Dispenser air release judgment program. In a glue coating apparatus having a computer, a program that causes the computer to execute the following steps,
Rotating the screw of the glue dispenser for a predetermined time, stopping the screw for a predetermined time, and rotating the screw again for a predetermined time;
Closing the discharge port of the needle, and rotating the screw for a predetermined time while closing the discharge port of the needle,
Further closing the discharge port of the needle from the lid, and rotating the screw for a predetermined time with the discharge port released;
Performing a continuous application of the glue a predetermined number of times, stopping the application operation for a predetermined time, and performing a continuous application of the glue at least two points again;
Capturing an image of at least two points of the glue that have been subjected to the continuous coating, and calculating a coating area of the glue from the image data,
Comparing the calculated application areas with each other. An apparatus for setting up a glue dispenser, comprising: the setup unit according to claim 1, a computer, and a program recorded in a main storage device of the computer, wherein the program is a program according to claim 7. A glue coating device, comprising the setup device according to claim 9.

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