JPH08281174A - Method for application and apparatus therefor - Google Patents

Abstract

PURPOSE: To prevent the operation rate of an apparatus from lowering by an application operation to detect the amount of an agent applied. CONSTITUTION: When an operation for applying an adhesive 2 on a printed board 5 is finished, for the condition of application diameter recognition, a discharge nozzle 4 is moved to a detection table 10. While the board 5 is being loaded, trial application is conducted by the nozzle 4 on the table 10, and the application diameter recognition is carried out by a camera 11, and correction data on the application diameter are calculated so that the board 5 is positioned before working application being implemented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention applies a coating material to a printed circuit board transferred onto a work table by a transfer device by discharging the coating material from a discharging nozzle and the amount of the coating material discharged from the discharging nozzle. TECHNICAL FIELD The present invention relates to a coating method and a coating device for detecting a pressure using a detection device.

[0002]

2. Description of the Related Art A coating material discharged from a discharge nozzle is applied to a printed circuit board placed on a work table of this kind, and it is detected whether the amount of the coating material discharged from the discharge nozzle is a designated amount. Application device and application method
No. 169159. In this type of device, whether the amount of the adhesive or other coating agent is the designated amount is applied to the printed circuit board or the detection table other than the printed circuit board by the discharge nozzle to recognize the coating diameter and the like. The device recognizes and detects whether it is within the allowable range.

[0003]

However, in the above-mentioned prior art, the operation of applying the coating agent for detecting the applied amount is different from the actual application that has to be applied to the substrate, and the production of the substrate is not performed. Since it is an operation that does not directly contribute to itself, there is a problem that the operating rate is reduced by the application time of the coating agent for this detection.

Therefore, it is an object of the present invention to prevent the operating rate of the apparatus from being lowered due to the application operation of the coating agent for detecting the coating amount of the coating agent.

[0005]

Therefore, according to the present invention, the coating material is ejected from the ejection nozzle to be applied to the printed circuit board transferred onto the work table by the transfer device, and is ejected from the ejection nozzle. In a coating method for detecting the amount of coating agent using a detection device, the detection device is made to detect the discharge amount of the coating agent from the discharge nozzle during the transfer operation of the printed circuit board by the transfer device. It was done.

Further, according to the present invention, a coating material is applied from a discharge nozzle onto a printed circuit board transferred onto a work table by a transfer device, and the coating material is applied onto the detection table from the discharge nozzle. In a coating device that detects the amount of the discharge amount using a detection device, the detection device includes a driving unit that moves the ejection nozzles in the XY directions with respect to the work table, and Control means is provided for controlling the movement of the discharge nozzle onto the detection table by the driving means so that the discharge nozzle can apply the coating material for detection.

[0007]

According to the structure of the first aspect, the amount of the coating material discharged from the discharge nozzle is detected by the detection device while the printed circuit board is transferred to the work table by the transfer device.

According to the second aspect of the present invention, while the printed circuit board is being transferred to the work table by the transfer device, the control means can apply the coating material for detection by the detection means to the discharge nozzle. The movement of the discharge nozzle onto the detection table by the driving means is controlled.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a coating device which discharges the adhesive 3 from a discharge nozzle 4 provided at the tip of a syringe 3 filled with the adhesive 2 and applies the adhesive 3 to a printed circuit board 5. The syringe 3 is provided in a head portion (not shown), and the head portion includes the X motor 6 and the Y motor shown in FIG.
By driving the motor 7, the XY table (not shown) moves in the X and Y directions in the horizontal plane as shown by the arrows in FIG.

Further, the head or syringe 3 is moved or moved up and down in the Z direction of FIG. 1 by the Z motor 8 shown in FIG. 4, and the syringe 3 is moved in the θ direction of FIG. It is attached so as to be driven and rotated by the θ motor 9.

Reference numeral 10 denotes a detection table to which the adhesive 2 is applied. The adhesive 2 applied to the table 10 is imaged by a recognition camera 11 attached to the head portion (not shown) and its application diameter (applied). Since the adhesive has a substantially circular shape when viewed from above, its diameter) is recognized. It can be said that the coating amount is recognized by looking at the size of the coating diameter, but the area may be calculated assuming that it will not be circular, or the volume can be calculated by looking at the height from the horizontal direction. That is, the amount itself can be directly detected.

The printed circuit board 5 is placed on a pair of transport chutes 14 provided on the workbench 13 at predetermined intervals. The detection table 10 is attached to the side surface of the workbench. The lower surface of the substrate 5 on the transfer chute 14 is supported by the lower surface of the backup pin 15 which is erected on the workbench 13, and is positioned and fixed in the XY and vertical directions by a positioning device (not shown).

The discharge nozzle 4 applies the adhesive 2 onto the substrate 5 in the order of application steps of application data (not shown). The head portion (not shown) moves in the XY directions so that the nozzles 4 are printed. It is designed so that it can be moved over 5.

Reference numeral 16 is a supply conveyor for receiving the printed circuit board 5 from the upstream device and moving it toward the work table 13. Reference numeral 17 is the printed circuit board 5 on which the adhesive 2 to be applied on the work table 13 has been applied. It is a discharge conveyor that sends it to a downstream device.

While the coating operation is being performed on the workbench 13, the supply conveyor 16 conveys the substrate 5, but is stopped at a predetermined position and stands by, and is provided on a transfer arm (not shown). The paired transfer claws 18 push the substrate 5 on standby, move it onto the chute 14 of the workbench 13, and push the substrate 5 on which the adhesive 2 has been applied onto the discharge conveyor. Prior to the transfer operation, the positioning of the substrate 5 by a positioning mechanism (not shown) is released.

The control block of the coating apparatus 1 will be described with reference to FIG.

Reference numeral 19 denotes a CPU, which stores programs such as the flowcharts shown in FIGS. 5 and 6 stored in the ROM 21 on the basis of various data such as the coating data stored in the RAM 20 and the recognition data of the recognition camera 11. According to the above, the operation of the coating apparatus is comprehensively controlled. FIG. 6 is a flowchart for the blocks of the “substrate transfer operation” and the “coating diameter recognition operation” in the steps of the flowchart of FIG. 5, and both operations are performed in parallel.

Reference numeral 22 denotes an interface, which connects the X motor 6 and the like to the CPU 19 via a drive circuit 23.

The operation will be described below with the above configuration.

First, when the automatic operation of the coating apparatus 1 is started by the operation of the operation unit (not shown), the substrate 5 is transferred from the upstream apparatus onto the supply conveyor 16 and conveyed.

During this time, since the discharge nozzle 4 cannot apply the adhesive 2 to the substrate 5, the adhesive 2 is discarded to the detection table 10 in order to stabilize the amount of the discharged adhesive 2. Strike operation.

That is, the head unit (not shown) is moved onto the detection table 10 by the drive of the X motor 6 and the Y motor 7 under the control of the CPU 19 as the control means, and the Z motor 8 is moved at a predetermined position of the table 10. The compressed air from the compressed air source (not shown) flows into the syringe 3 by the opening of a valve (not shown), the adhesive 2 is discharged from the discharge nozzle 4, and is applied onto the table 10. X times as shown in the data not shown
When the adhesive 2 is applied while changing the position in the Y direction, application of the adhesive 2 as a trial application for recognizing the application diameter is subsequently performed as shown in FIG.

After the trial coating is performed, the head portion moves in the XY directions, and each of the trial-coated adhesives 2 is imaged by the camera 11 as shown in FIG. 2 to recognize the coating diameter.

Next, it is confirmed by the CPU 19 whether the application diameter of the adhesive 2 indicated by the data is within the permissible range, and if it is not within the permissible range, calculation for correction of the coating conditions is performed. . Normally, the size of the coating diameter changes depending on the time for which the compressed air is added, that is, the time for which the valve is opened, so the time for opening the valve when a coating diameter smaller than the set coating diameter is recognized. (Hereinafter referred to as “ejection time”) is corrected so as to be longer, and when the coating diameter is larger than the set coating diameter, the ejection time is corrected so as to be shortened.

A value (data for automatic correction of coating diameter) in which the ejection time is corrected in this way is stored in the RAM 20.

In parallel with the above operation, the supply conveyor 16
The printed circuit board 5, which has been stopped at a predetermined position above, is transferred to the transfer claw 1.
It is pushed by 8, is guided by the transport chute 14 to move, and is transferred to a predetermined position on the transport chute 14. The transfer arm (not shown) provided with the transfer claw 18 is rotatable about a predetermined axis extending in the X direction located in front of the front transfer chute 14 in FIG. When it is not used, it is swung to the front side in FIG. 1 and is waiting at a position where it does not interfere with the substrate 5, the syringe 3, etc., and at the time of transfer, it is swung so that the transfer claw 18 of the substrate 5 moves. The position is such that it can be engaged with the end portion.

In this way, when the recognition camera 11 finishes the recognition operation during the transfer operation of the printed circuit board, the head portion including the ejection nozzle 4 and the recognition camera 11 is transferred from the detection table 10. It moves on the substrate 5 transferred to the claw 18 as shown in FIG.

Next, the substrate 5 is positioned by a positioning mechanism (not shown), and is further supported and fixed by the backup pin 15.

Next, the discharge nozzle 4 is moved by the drive of the X motor 6 and the Y motor 7 to the position on the substrate 5 designated for each step of the coating data (not shown) stored in the RAM 20, and the Z motor 8 is driven. And the nozzle 4 shown in the coating data is rotated by the amount by which the θ motor is driven by an angle to be swung, and the discharging time shown in the coating data is corrected by the discharging time after the coating diameter is recognized. 2 is discharged, and the adhesive 2 is applied to the substrate 5.

In this way, when the application of the adhesive 2 is completed at all the positions on the substrate 5 to be applied (the CPU 19 is determined by the completion data shown in the application data).
Determines the end. ), The positioning of the substrate 5 is released, the transfer claw 18 is rotated from the standby position and moved to a position where it can be engaged with the end of the substrate 5, and the transfer claw 18 is moved and supplied by a drive mechanism (not shown). The substrate 5 on the conveyor 16 is transferred onto the transfer chute 14, and the substrate 5 on the transfer chute 14 is transferred onto the discharge conveyor 17.

When the coating operation on the substrate 5 is completed, in parallel with the above operation, the CPU 19 causes the head portion (the syringe 3 and the recognition camera 1 to operate as shown in the flowcharts of FIGS. 5 and 6.
It is composed of 1 etc. ) And the transfer claw 18 and the transfer arm (referred to as “transfer” in the flowchart) are in the interference area. If they are not in the interference area, the transfer claw 18 is used to convey the substrate 5. Check if The case of being in the interference region means a state in which the transfer arm is rotating.

When it is confirmed that the substrate 5 is transported, the coating diameter recognition operation similar to that described above is performed. As a premise for this operation, the application diameter recognition must be set to be used by a setting device such as a touch panel switch (not shown), and the application diameter recognition condition similarly set must be satisfied. Confirm. The coating diameter recognition condition is a condition that determines the timing for performing coating diameter recognition, and is set by the number of finished substrates 5, the number of coating times, the coating time, etc. For example, the coating diameter recognition should be performed every time three substrates 5 are finished. When set, the number of finished sheets is counted by the counter each time the coating of the substrate 5 is completed,
When the count value is three, the coating diameter recognition operation is performed. When the coating diameter recognition condition is set for each number of finished substrates 5, the trial coating and the coating diameter recognition are performed while the substrates 5 are being transferred, but in other conditions. The timing for recognizing the coating diameter is in the middle of the coating operation on the substrate 5, but even in this case, the condition is waited until the coating operation on the substrate 5 is completed and the transfer operation of the substrate 5 is performed. The coating diameter should be recognized.

The coating diameter recognizing operation is carried out by moving the nozzle 4 to a predetermined position on the detection table 10. However, when the setting for using the discarding coating is made, the table is processed as described above. Application is made on the 10 to stabilize the adhesive 2. This is because the nozzle 4 is 1 in this embodiment.
This is particularly effective when trying to recognize the coating diameter of a nozzle 4 which has a plurality of nozzles and has not been used for a while.

When the discarding operation is completed in this way, the number of trial coatings set for recognition of the coating diameter is set.
2 and the camera 11 recognizes as shown in FIG. Based on the recognition result, the application diameter automatic correction data is calculated as described above.

Next, the transfer claw 1 indicating whether the transformer is in a fixed position
8 is returned to the standby position, the stop button (not shown) is not pressed, and the printed board 5 newly mounted and fixed on the transport chute 14 is immediately fixed with the adhesive according to the coating data. The second actual coating operation is performed.

Also, as a second embodiment, as shown in FIG. 7, when the conveyor 26 for transporting the substrate 5 is provided on the work table 13 regardless of the transfer claw 18, the coating operation on the substrate 5 is performed. While the substrate 5 is being conveyed by the conveyor 26 after the completion of step 3, the nozzle 4 may be moved to perform the coating diameter recognition operation.

In this embodiment, the nozzle 4 and the recognition camera 11 are mounted on the same head part, but the nozzle and the camera are moved by different XY movement mechanisms, and the substrate 5 is moved. The nozzle may be moved onto the substrate 5 while being recognized by the camera when the trial coating by the nozzle is completed during mounting.

[0039]

As described above, according to the present invention, during the transfer operation of the substrate which cannot be coated with the coating agent,
Since it is possible to apply the coating agent from the discharge nozzle to detect the coating agent, it is possible to prevent the operating rate of the apparatus from being lowered without the time of the actual coating operation to be applied to the printed circuit board being restricted. .

[Brief description of drawings]

FIG. 1 is a perspective view of a coating device performing trial coating.

FIG. 2 is a perspective view of a coating device which recognizes a coating diameter.

FIG. 3 is a perspective view of the coating apparatus in a state where a discharge nozzle has moved onto a substrate.

FIG. 4 is a control block diagram of the coating apparatus.

FIG. 5 is a diagram showing an overall flow chart of a coating diameter recognition operation and a substrate transfer operation.

FIG. 6 is a diagram showing a flowchart of a coating diameter recognition operation and a substrate transfer operation.

FIG. 7 is a perspective view of a coating device according to a second embodiment.

[Explanation of symbols]

 1 Coating Device 2 Adhesive (Coating Agent) 4 Discharge Nozzle 5 Printed Circuit Board 6 X Motor (Drive Means) 7 Y Motor (Drive Means) 10 Detection Table 11 Recognition Camera (Detection Device) 13 Work Table (Work Table) 18 Transfer Mounting claw (transfer device) 19 CPU (control means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiyuki Kurihara 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A transfer device applies a coating material onto a printed circuit board transferred onto a work table by a discharge nozzle and applies the amount of the coating material discharged from the discharge nozzle using a detection device. In the application method for detecting, the detection apparatus is caused to detect the discharge amount of the coating agent from the discharge nozzle during the transfer operation of the printed circuit board by the transfer apparatus. 2. A coating device is applied to a printed circuit board transferred onto a work table by a transfer device by discharging the coating liquid from a discharge nozzle, and the amount of the coating liquid applied from the discharge nozzle onto the detection table is measured. In a coating device that detects using a detection device, a driving unit that moves the discharge nozzle in the XY directions with respect to the work table, and the detection unit that detects during the transfer operation of the printed board by the transfer device. The coating device is provided with a control means for controlling the movement of the discharge nozzle onto the detection table by the driving means so that the coating material can be applied to the discharge nozzle.