JPH10107412A - Coating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce labor for generating delivery amount related data by housing data related to delivery amount of coating material in a library for various application amount. and automatically setting it at the time of application to a substrate. SOLUTION: With a setting screen for application condition data being displayed on a CRT 28, such data as discharge time, pressure, etc., as initial values for obtaining a target application amount are set. Then, under the set condition, a bonding agent is applied to a specified position. Then the application point is recognized with a recognition camera 8 for calculating its diameter. Then, whether or not the application diameter is within an allowable range is decided. If it is not within an allowable range, the delivery time for next application is calculated, and the bonding agent is delivered with the delivery time which is newly set, with an application diameter obtained with the camera 8. Coming into the allowable range after repeated applications, recognition and correction value calculation operations, final delivery time data is set as initial values and is stored in a library in a RAM 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus for discharging a coating agent stored in a syringe through a discharge nozzle by air pressure and applying the coating agent to a printed circuit board in accordance with discharge amount-related data for determining a discharge amount of the coating agent.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 8-89 discloses this kind of coating apparatus.
The one described in Japanese Patent Publication No. 865 is known. According to this conventional technique, in order to obtain the amount of application to be applied for each application position, the adhesive as the application agent is ejected with the value of the individual ejection amount related data set in the application condition data, and the application is performed. It has been done.

One of the data constituting the application condition data is
The application time (ejection time), which is one of the data, is input in advance, and the initial value is used as the initial value and the correction time is added to the initial value (the correction time may be a negative value). It is time to apply air pressure.

[0004] The value of the discharge time as the initial value is determined by the operator changing the discharge time and the coating diameter (the coating diameter is used as the coating amount) while changing other conditions constituting the coating condition data for each type of adhesive. Is measured, and the relationship between the two is plotted on a graph, and the ejection time for obtaining a desired coating diameter is determined and input.

Further, even if the initial value is set to an appropriate value, the application diameter is recognized and the correction is performed based on this, so that an accurate discharge time can be finally obtained. If the operation is performed, it takes time before the actual production is started. Therefore, in the prior art of the same publication, application condition data for obtaining various application diameters is stored in the apparatus as a library. This data is used for each position specified by the data name.

[0006]

However, in the above-mentioned prior art, it is troublesome and time-consuming for the operator to graph the relationship between the discharge time and the application diameter.

Accordingly, an object of the present invention is to reduce the trouble of creating ejection amount related data.

[0008]

According to the present invention, a coating agent stored in a syringe is discharged through a discharge nozzle by air pressure and applied to a printed circuit board in accordance with discharge amount-related data for determining a discharge amount of the coating agent. In the coating apparatus, setting means for automatically setting the ejection amount-related data is provided.

[0009] With this configuration, it is possible to save labor for the operator to perform the measurement.

According to the present invention, there is provided the coating apparatus according to the first aspect, further comprising storage means for storing the set discharge amount-related data as a library for various coating amounts.

[0011] With this configuration, it is not necessary to spend time to set each time, and the operation rate of production increases.

Further, according to the present invention, in the coating apparatus according to the first aspect, there is provided transfer means for transferring the set ejection amount-related data to a storage device for storing the set ejection amount-related data as a library for various application amounts.

According to the present invention, the coating agent stored in the syringe is discharged through a discharge nozzle by air pressure and applied to a printed circuit board in accordance with the discharge amount-related data for determining the discharge amount of the coating agent. An initial value of the related data is stored, and the initial value of the ejection amount related data is automatically set in a coating apparatus that applies the coating material in accordance with the ejection amount related data obtained by adding a correction value to the initial value. It is provided with setting means.

[0014] With this configuration, the initial value can be optimized and used, and the time required for setting the initial value can be saved.

Further, according to the present invention, the coating agent stored in the syringe is discharged through a discharge nozzle by air pressure and applied to a printed circuit board in accordance with the discharge amount-related data for determining the discharge amount of the coating agent. A setting device for automatically setting an initial value of the ejection amount-related data in a coating apparatus that performs application of a coating agent according to the changed data while changing related data and separately stores the initially set data. It is provided.

With this configuration, the initial value can be optimized and made available, and the time required for setting the initial value can be saved.

Further, according to the present invention, in the coating apparatus according to any one of claims 1 to 5, the setting means sets at least discharge time data for applying air pressure in the discharge amount-related data. is there.

[0018]

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

In FIG. 2, 1 is a printed circuit board,
It is mounted on an XY table 4 as a relative moving means that moves in the XY directions by driving the X-axis motor 2 and the Y-axis motor 3. Reference numeral 5 denotes an application unit, which applies an adhesive as an application agent stored in the syringe 7 onto the substrate 1 through an application nozzle 6 attached to the syringe 7.
The coating unit 5 includes four syringes 7 each having a nozzle 6 attached thereto. The nozzle 6 to be used is selected from the nozzles 6, and the nozzle 6 is moved up and down by a nozzle up-down mechanism (not shown). The discharged adhesive is applied.

From the upper end of the syringe 7, an air passage 30, which will be described later, is connected to a compressed air source. Regulator 26 to be described later
Further, a discharge valve 27 to be described later, which switches between adding compressed air to the syringe 7 and releasing the compressed air to the atmosphere, is provided. The printed circuit board 1 is moved in XY by the supply conveyor 11.
It is sent onto the table 4 and the substrate 1 on the XY table 4
Is discharged and conveyed to a downstream device by a discharge conveyor 12. As shown in FIG. 3, a fixed chute 13 and a movable chute 14 for transferring the substrate 1 from the supply conveyor 11 are provided on the XY table 4, and the substrate 1 is positioned and fixed on the chute 13 and 14, and bonded. The agent is applied. A recognition plate 16 is attached to the movable chute 14, and the adhesive is discarded and applied for recognition. The throw-away application is to apply the adhesive on the recognition plate 16 before the application of the adhesive on the substrate 1 using the nozzle 6 that has not been used for a long time. When the coating operation is performed on the substrate 1 while the adhesive hangs down from the nozzle 6, the applied amount of the adhesive changes, or when the adhesive hardens, an appropriate applied amount is not obtained. It is done to pass. When the application for recognition is performed on the recognition plate 16, the recognition camera 8 as a detecting means provided in the application unit 5 recognizes the applied adhesive and recognizes the applied diameter. Since the adhesive is applied in a substantially circular shape, the application amount of the adhesive is recognized by recognizing the applied diameter.

The fixed chute 13 is fixed, but the movable chute 14 moves so as to be able to approach and separate from the fixed chute 14 and when the width direction orthogonal to the transport direction of the substrate 1 changes according to the type of substrate. Since the recognition plate 16 is attached to the movable chute 14, the recognition plate 16 moves with the movement of the movable chute 14. In the present embodiment, the recognition plate 16 is provided separately from the substrate 1 so as to perform the throwing-out application and the application for recognition, but the adhesive is applied to a place other than the application for the production of the substrate 1. Application may be performed.

Next, a control block diagram of the coating apparatus will be described with reference to FIG.

Reference numeral 20 denotes a CPU serving as a setting means, which comprehensively controls various operations relating to the coating operation of the coating apparatus in accordance with a control program stored in the ROM 22 based on various data stored in the RAM 21 as storage means. . An X-axis motor 2, a Y-axis motor 3, a bus line 23 to which the CPU 20 is connected via an interface 24.
The recognition camera 8, the regulator 26 and the discharge valve 27 are connected. Further, a CRT 28 for displaying various screens is also connected to the interface 24. Also,
The air passage 30, which is a passage for compressed air, is
And the discharge valve 27 communicates with the inside of the syringe 7.
In FIG. 4, the regulator 26 and the discharge valve 27 are 1
Although described individually, they are provided for each of the syringes 7, and are provided by the number of the syringes 7. Further, a communication interface 34 as a transfer unit is connected to the bus line 23, and communication with a device that can store application condition data described later, such as a personal computer (personal computer) not shown, is enabled. CRT28
A touch panel switch is formed on the screen of,
A predetermined operation can be performed by touching a location displayed as a switch unit.

The NC data is created for each substrate type, and the one shown in FIG. 5 corresponds to the substrate type "AAA". The NC data is composed of operation data composed of data such as a substrate size (XY size and thickness size), coating step data, and coating condition data. The coating apparatus applies the amount of adhesive to be applied to the position to be applied in accordance with the data supported by the step for each step of the application step data, and the application data name shown in the step is the application condition data. Is assigned to each application condition, and data indicating the application condition corresponding to the application condition data is selected from the application data name. The application conditions include the nozzle ID of the nozzle 6 (indicating the type of the nozzle 6,
Each nozzle type is assigned to a different nozzle type depending on the number of ejection holes, the height gap between the stopper and the ejection holes, and the like. ), Discharge time (time for applying air pressure to the syringe 7), discharge pressure indicating air pressure to be applied to the syringe, application amount data indicating a target application amount to be applied, and a gauge (the regulator 26 provided for each syringe 7). , Which indicates the position where the nozzle 6 is attached.). Individual data that can be varied to adjust the amount of adhesive discharged such as the discharge time and the discharge pressure is referred to as discharge amount-related data.

The application condition data name is composed of alphabets, numerals and other symbols, and is specified not only in one NC data but also commonly used in other NC data. This data name is 1
It is not a serial number in one NC data. This application condition data is collectively stored as a library in a predetermined storage medium such as the personal computer described above,
When creating NC data, it is read from this library and used.

The setting operation of the application condition data will be described below.

A screen as shown in FIG. 6 for setting application condition data on the CRT 28 by operating an operation unit (not shown) is displayed, and the application data name setting, nozzle ID setting, adhesive name setting, and target are set. The application amount (discharge amount) is set (by setting the diameter of the application diameter), and data such as the discharge time and the discharge pressure are set as initial values for obtaining the target application amount. Even if the initial value of the ejection time is not set, a value applicable to any nozzle 6 is set and displayed in advance.
The nozzle 6 is heated to a predetermined temperature so that the adhesive maintains a predetermined viscosity, which affects the discharge amount. This temperature is also stored and the setting can be changed.

Also, since the amount of application to be applied may be applied within a certain allowable range, the allowable range can be set on the plus side and the minus side in percentages.

Next, by touching the switch section of the screen shown in FIG. 6 which indicates "Setting start", the setting operation of the discharge time data, which is one of the following discharge-related data, is shown in FIG. It is started according to the flowchart shown.

That is, the adhesive is applied by moving the XY table 4 to a predetermined position of the recognition plate 16 under the conditions set in the application condition data.

Next, the application point on which the adhesive is applied is moved within the field of view of the recognition camera 8 by the movement of the XY table 4, and the adhesive is recognized. Since the adhesive is substantially circular, its diameter is calculated. You.

It is to be noted that a so-called throw-off application in which only a few points are not recognized may be performed before the application for recognition to stabilize the application amount to some extent.

Next, the calculated adhesive application diameter (diameter)
Is compared with the application amount (diameter) set in the application condition data, and it is determined whether the application amount is within the above-described allowable range.

If it is not within the allowable range, processing for calculating the next application time is performed. If the recognized application diameter is larger than the target application diameter, the time shortened by the predetermined time is used. If it is smaller than the target application diameter, a time extended by a predetermined time is set.

Next, the adhesive is ejected at the newly set ejection time, and the camera 8 recognizes the adhesive to determine the application diameter.

As a result, if it is not within the allowable range, a linear function of the discharge time and the coating diameter is derived from the first discharge time and the coating diameter and the next discharge time and the coating diameter to obtain the target coating diameter. Is calculated.

Next, the calculated ejection time is set, the application and recognition of the adhesive are performed again, it is determined whether or not it is within an allowable range. If not, the operation of calculating the correction value of the ejection time is performed again. .

In this manner, the application, recognition, and calculation of the correction value are performed until the value reaches the allowable value. If the value does not fall within the allowable value even after being recognized a certain number of times, the operation may be stopped as an abnormality.

As described above, when the value falls within the allowable range, this operation is stopped, and the final discharge time data is set as the initial value used for the production operation, and the application condition shown in FIG. Data is stored.

Next, when it is desired to set other application condition data, the data is set in the same manner, and the switch of "setting start" is pressed to perform the same operation.

In this way, every time the type of the adhesive changes, the application condition data is set for each type of the nozzle 6, and
Store in the library. When the capacity of the library in the RAM 21 is insufficient, the application condition data may be transferred to an external device such as a personal computer via the communication interface 34.

Thus, the initial value of the application condition data is stored in the library.

Next, the production operation will be described.

First, when the type of the substrate 1 to be coated is set from an operation unit such as a touch panel, an NC as shown in FIG.
The data is set and stored in a predetermined area in the RAM 21. The application condition data of the NC data is stored in the RAM 2
1 and read from and stored in the library of the external device. Alternatively, it may be read from the library each time the coating step is performed.

Next, when a start command of the production operation is issued, the CPU 20 reads the application step of the application step data of the NC data, and reads out the data of each applicable application condition of the application condition data from the application data name of the step. .

Next, XY is added to the position indicated by the specified position data.
The table 4 is moved, the nozzle 6 with the designated nozzle ID is lowered, the regulator 26 is set to the value indicated by the data, the discharge valve 27 is opened for the data time, and the adhesive is discharged for the specified discharge time. In this way, the adhesive is applied to the specified position on the substrate 1. That is, in step M001, the valve 27 is switched to the compressed air side at a predetermined timing for the nozzle 6 having the nozzle ID "1110" at the pressure P1 and the discharge time of 5 msec, and the compressed air is added into the syringe 7.

In this manner, the application of the adhesive is performed for each step of the application step data.

When one substrate 1 is completed in this way, the number of substrates is counted, and the substrate 1 is discharged and conveyed by the discharge conveyor 12.

A chip-shaped electronic component is mounted on the discharged substrate 1 at a place where the adhesive is applied, by a next automatic electronic component mounting device, and the component is temporarily fixed to the substrate by the adhesive.

In this way, when the operating condition of the number of substrates set for a certain syringe 7 is reached, the number of times is counted, and the CPU 20 determines that the condition for operating the application amount is satisfied.
, And the application amount checking operation is performed for the syringe 7.

That is, the CPU 20 reads the application conditions for the syringe 7 that have become the operating conditions from the application condition data, and applies the adhesive to the recognition plate 16 in accordance with the ejection time and ejection pressure data. .
At this time, the throw-away application may be performed prior to the application for recognition.

The application diameter is recognized by the recognition camera 8 as to whether the adhesive has been applied to the recognition plate 16 and the application amount indicated by the application condition data has been applied in the same manner as described above, and it is determined whether the application amount is within the allowable range. Is done. The application of the adhesive and the recognition of the application diameter are performed by the correction of the ejection time in the same manner as described above until the allowable range is reached as described above. However, in the production operation, the data of the discharge time set as the initial value is stored as it is, and the correction time is stored in another area in the RAM 21, and this correction time is added to the discharge time of the initial value. The time when the compressed air is actually added to the syringe 7 is set as the time when the compressed air is actually added to the syringe 7. Therefore, the correction time is calculated for each recognition, and the value of the correction time is updated and stored in a predetermined area. When the value falls within the allowable range, the coating operation indicated by the NC data of the production operation is performed with the discharge time added to the initial discharge time using the correction time last updated. Therefore, the correction time may be a negative value.

With this arrangement, the initial value can be optimized and the time required for subsequent correction can be shortened. Even if the environment changes when a new operation is started later, the optimum value can be obtained. The operation can be started from the initial value, and is automatically set based on the flowchart of FIG. 1 as described above. The time required can be saved.

In the present embodiment, the data of the initial value of the ejection time is fixed, and the data of the correction time is added to the data of the ejection time so that the data of the correction time can be stored separately. The time was set to the time when the discharge valve 27 was opened to actually supply the compressed air to the syringe.
The ejection time data in the application condition data in the NC data is sequentially replaced with new data calculated by recognizing the application amount, so that the ejection time data set as the initial value is not updated to another area in the RAM 21. It may be stored. Alternatively, when a new production operation is to be performed without storing the discharge time in another area, the discharge time stored in the library (assuming that the library time is not changed) is read and a predetermined discharge time for the NC data is read out. The time data may be stored in a storage area.

In the present embodiment, the discharge amount is changed by changing the discharge time. However, when the discharge pressure is changed by changing the discharge pressure as the discharge amount related data, the initial discharge pressure is similarly changed. Automatic setting of values can be performed.

[0056]

As described above, according to the present invention, the operator does not need to set the discharge amount-related data including the discharge time, and the setting work can be omitted.

[Brief description of the drawings]

FIG. 1 is a diagram showing a flowchart of an operation for setting data of ejection time.

FIG. 2 is a front view of a coating apparatus.

FIG. 3 is a plan view showing an XY table.

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

FIG. 5 is a diagram showing NC data.

FIG. 6 is a diagram of a screen for setting application condition data.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed circuit board 6 Application nozzle (ejection nozzle) 7 Syringe 8 Recognition camera 20 CPU (setting means) 21 RAM (storage means) 34 Communication interface (transfer means)

Claims (6)

[Claims] 1. A coating apparatus which discharges a coating agent stored in a syringe through a discharge nozzle by air pressure and applies it to a printed circuit board in accordance with discharge amount-related data for determining a discharge amount of the coating agent. A coating device, comprising setting means for setting automatically. 2. The coating apparatus according to claim 1, further comprising storage means for storing the set ejection amount-related data as a library for various coating amounts. 3. The image processing apparatus according to claim 1, further comprising a transfer unit configured to transfer the set ejection amount-related data to a storage device that stores a library of various application amounts.
3. The coating device according to claim 1. 4. The method according to claim 1, wherein the application agent stored in the syringe is discharged through a discharge nozzle by air pressure and applied to a printed circuit board in accordance with the discharge amount-related data for determining the discharge amount of the coating agent. Remember the initial value,
In a coating apparatus for applying a coating material in accordance with ejection amount-related data obtained by adding a correction value to the initial value, a setting unit for automatically setting an initial value of the ejection amount-related data is provided. Coating device. 5. The method according to claim 5, wherein the application agent stored in the syringe is ejected by air pressure through an ejection nozzle and applied to a printed circuit board in accordance with ejection amount-related data for determining an ejection amount of the application agent. A setting device for automatically setting an initial value of the ejection amount-related data is provided in a coating apparatus that performs application of a coating agent according to the changed data while changing and separately stores the initially set data. A coating device characterized by the above-mentioned. 6. The coating apparatus according to claim 1, wherein the setting means sets at least data of a discharge time for applying air pressure in the discharge amount-related data.