JP2002126605A - Adhesive coating applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate and simplify the degassing of an adhesive charged in a syringe. SOLUTION: A new syringe 7 is set and a nozzle number to be degassed is selected. In the case of 'discharge time optional', that means automatic discharge, the nozzle is selected from 3 kinds of 'small nozzle', 'middle nozzle' and 'large nozzle' and the 'small nozzle' is selected as the nozzle number of 1 and the discharge time is set by manual setting about the nozzle number of 2. In the case of automatic discharge, the 'small nozzle' is selected and, for example, a corresponding valve 8 is opened by 80 sec to pressurize. The discharge time is previously stored in a RAM 16 corresponding to the nozzle type and the discharge time is timed by a CPU 15 having timer function to control the valve 8. In the case of setting the discharge time by the manual setting, the discharge time is also stored in the RAM 16 and timed by the CPU 15 having the timer function to control the valve 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive applying apparatus for applying an adhesive in a syringe onto a printed circuit board via an application nozzle.

[0002]

2. Description of the Related Art In an adhesive applying apparatus of this kind, when an application nozzle is set on a syringe loaded with an unused adhesive (a syringe loaded with an adhesive and sold by a manufacturer). Before starting normal production, make sure that a predetermined amount of adhesive is forcibly discharged so that the adhesive can be evenly distributed to the tip of the nozzle, and air bubbles that may be contained during nozzle setting are set. A preparatory work is required to remove the bubbles to prevent the ejection diameter from being disturbed (unapplied) due to bubbles and to prevent problems such as stringing.

[0003]

However, conventionally, the discharge valve of the coating apparatus is turned on by pressing and holding the operation button, which involves a very troublesome operation.

Accordingly, an object of the present invention is to facilitate and simplify an operation (setup operation) for removing bubbles contained in an adhesive loaded in a syringe.

[0005]

Means for Solving the Problems For this reason, the first invention provides
In an adhesive application device that applies an adhesive in a syringe onto a printed circuit board via an application nozzle, a storage unit that stores a time for opening the valve and pressurizing the inside of the syringe with a pressure supply source, and opening the valve Switch, and the valve so as to discharge the adhesive containing bubbles from the application nozzle by pressurizing the syringe for a time stored in the storage unit based on the operation of the operation switch. And a control device for controlling

According to a second aspect of the present invention, there is provided an adhesive applying apparatus which includes a plurality of application nozzles having different application diameters and applies an adhesive in a corresponding syringe onto a printed circuit board via the application nozzle. A storage unit for storing the time for pressurizing the inside of each syringe by a pressurized supply source for each application nozzle, an operation switch for instructing to open the valve, and the storage unit based on the operation of the operation switch And a control device for controlling the valve so as to discharge the adhesive containing air bubbles from the application nozzle by pressurizing the syringe corresponding to the time stored in the syringe.

According to a third aspect of the present invention, there is provided an adhesive application apparatus for applying an adhesive in a syringe onto a printed circuit board through an application nozzle, wherein a valve is opened and a time for pressurizing the inside of the syringe by a pressurized supply is optional. Setting unit, a storage unit for storing the time set by the setting unit, an operation switch for instructing to open the valve, and stored in the storage unit based on the operation of the operation switch. And a controller for controlling the valve so as to discharge the adhesive containing bubbles from the application nozzle by pressurizing the inside of the syringe for a predetermined time.

According to a fourth aspect of the present invention, there is provided an adhesive coating apparatus which includes a plurality of coating nozzles having different coating diameters and applies an adhesive in a corresponding syringe onto a printed board via the coating nozzle. A setting unit for arbitrarily setting the time for pressurizing the inside of each syringe by the pressurized supply source for each application nozzle, a storage unit for storing the time set by the setting unit, and an instruction to open the valve And controlling the valve so as to discharge the adhesive containing bubbles from the application nozzle by pressurizing the corresponding syringe for the time stored in the storage unit based on the operation of the operation switch. And a control device that performs the control.

A fifth invention is characterized in that a stop switch for forcibly stopping the discharging operation is provided during the discharging operation of the adhesive.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below in detail with reference to the accompanying drawings. First, in FIG. 1, reference numeral 1 denotes a printed circuit board mounted on an XY table 4 which is moved XY by driving the X-axis motor 2 and the Y-axis motor 3.

Reference numeral 5 denotes an adhesive as a coating agent filled in a syringe 7 through a coating nozzle 6 on the printed circuit board 1.
This is a coating unit for coating on the upper side, and includes three coating nozzles 6. As described above, the application nozzle 6 includes three “small nozzles”, “medium nozzles”, and “large nozzles” in order to realize various desired application diameters. Then, a desired one of the three application nozzles 6 is selected and fixed, and is lowered onto the printed circuit board 1 by a vertical movement by a nozzle up-down mechanism (not shown) of the application unit 5, and is discharged to the nozzle tip. The applied adhesive is applied. Reference numeral 8 denotes a valve, which opens when turned on, pressurizes the inside of the syringe 7 by a pressurized supply source (not shown),
The adhesive is discharged from the tip of the.

Reference numeral 10 denotes a CCD camera for picking up the diameter of the adhesive applied on the printed circuit board 1 during the automatic correction of the applied diameter recognition. Reference numeral 11 denotes a supply conveyor for supplying the printed circuit board 1 received from an upstream device (not shown) to the XY table 4. Reference numeral 12 designates a printed circuit board on which the adhesive is applied on the XY table 4 to a downstream device ( (Not shown).

Next, a description will be given with reference to the control block diagram of FIG. 2.
PU (Central Processing Unit)
Reference numeral 6 denotes a RAM (random access memory) as a storage device for storing various data such as NC data relating to the coating position and the like. Reference numeral 17 denotes a ROM (read only memory) for storing various programs relating to the coating operation. That is, based on the data stored in the RAM 16, the CPU 15 controls the operation of the adhesive application device in accordance with the program stored in the ROM 17.

An operation unit 18 includes various keys, that is, a power-on key 19, a start key 20, an operation key 21, and a stop key 22.
Etc. are provided.

Reference numeral 26 denotes a touch panel switch as a data input device connected to the interface 25, which is mounted on the screen of the CRT 27 via a mounting tool (not shown). In the touch panel switch 26, a transparent conductive film is coated on the entire surface of the glass substrate, and electrodes are printed on four sides. For this reason, an extremely small current is applied to the surface of the touch panel switch 26, and when the operator touches, a current change occurs in the four electrodes, and the coordinate value touched by the circuit board connected to the electrodes is calculated. Therefore, the coordinate value is set in advance as a switch unit for performing a certain operation.
If the coordinates match the coordinate values in the group of coordinate values stored in AM 16, the work is performed. In the present embodiment, a portion surrounded by a double frame of the screen displayed on the CRT 27 is stored for each screen so as to serve as the switch unit.

The operation of the above configuration will be described.
First, when the power-on key 19 of the present adhesive application device is pressed, an initial screen shown in FIG. Describing this initial screen, five operation menus can be selected so that the operation system is adapted to the nature and purpose of work.

That is, the switch section labeled "production operation" is operated for the main purpose of production, and can start the production operation, specify the production operation step, correct the production model data, and the like. And an operation menu group relating to automatic operation based on production model data.

The switch section labeled "setup work"
It is operated mainly for setup change, and can be used for model switching, home return operation, and manual operation.

The switch section displayed as "data edit" is composed of a group of data edit menus such as NC data, coating condition data, apparatus setting data, offset data, and the like.

The switch section indicated as "apparatus maintenance" comprises a group of menus related to apparatus maintenance and inspection such as apparatus operation information (management data), information redisplay, apparatus diagnosis (input check), teaching, and the like.

The switch section indicated as "environment setting"
The menu consists of menus related to environment settings such as password settings, tower light settings, buzzer settings, calendar settings, abnormal display color settings, and monitor settings.

When the switch section labeled "setup work" is pressed on this initial screen, the screen shown in FIG. Here, in order to perform the operation of removing the bubbles contained in the unused adhesive loaded in the syringe, the switch section labeled “Bubble removal operation” is pressed, and the bubble removal operation screen shown in FIG. 5 is displayed. Is CRT2
7 is displayed.

Hereinafter, the operation on this screen will be described in detail.
As a premise, first, a tissue paper for receiving the discharged adhesive is laid on the XY table 4, and then "movement of XY table setup position" is performed.

[Operation] is pressed, and the operation key 21 is pressed to move the XY table 4 to the setup position.

Next, a new syringe 7 is set in the coating unit 5, and a nozzle number for performing bubble removal is selected. In this case, a plurality of nozzle numbers can be selected, and in this embodiment, nozzle numbers 1 (the left one in FIG. 1) and 2 (also the center one) are selected. This selection is made on the CRT 27 “Nozzle 1

[Operation] and [Nozzle 2]

[Operation] ”is performed by pressing the switch section displayed. Then, in the case of the automatic discharge of “leave the discharge time”, the nozzle type is selected from three types of “small nozzle”, “medium nozzle”, and “large nozzle”. A small nozzle is selected by pressing a switch section labeled "Nozzle", and the ejection time is manually set for nozzle number 2. In the case of this manual setting, a switch section of the discharge time setting section is selected (press operation), and an up / down arrow "▲" or "▼" on the right side is displayed for an arbitrary time (for example, 45 seconds). Make the settings for

In the case of the automatic ejection, the "small nozzle"
When selecting, for example, the corresponding valve 8 is opened and pressurized for only 80 seconds, and when "Medium Nozzle" is selected, for example, the corresponding valve 8 is opened and pressurized for only 50 seconds, and when "Large Nozzle" is selected, for example, only for 20 seconds The valve 8 to be opened is opened and pressurized. Of course, this discharge time is determined by the aforementioned R
The nozzle 15 is stored in advance in the AM 16 corresponding to the nozzle type, and the CPU 15 has a timer function (not shown) to measure the discharge time and control the valve 8. Also, when the discharge time is set manually, the RAM is similarly set.
The CPU 15 has a timer function (not shown) to measure the discharge time and control the valve 8.

When the syringe for removing bubbles, in other words, all the nozzle numbers have been selected, the operation key 21 is pressed.

The progress of the operation of discharging the adhesive containing bubbles is as follows.
It is displayed in the status display section of the bubble removal work screen. That is, the nozzle number 1 is discharging, and the remaining time (12 seconds) is displayed. When the nozzle number 1 is completed as shown in the nozzle number 2, "discharge completed" is displayed. When the ejection of all application nozzles 6 is completed, “X
Move Y table origin position

[Operation] "is pressed, and the XY table 4 is returned to the origin by pressing the operation key 21.
The tissue paper on the XY table 4 is collected.

The operation key 21 is an illuminated push button switch, and is operated until the operation of all the application nozzles 6 is completed.
Stay illuminated to indicate that the device is operating.

When the operation is forcibly interrupted during the ejection, the "interruption"

The user presses the switch section labeled "[STOP]" and presses the stop key 22. A plurality of instructions for an arbitrary application nozzle 6 are possible. The operation for forcibly interrupting the operation will be described below.

First, in automatic bubble removal, the nozzle number 1 is a small nozzle (a small nozzle is set at the leftmost part of the coating unit 6). For example, "small nozzle" is selected by automatic ejection to remove bubbles. Will be described. The operator confirms that the adhesive in the syringe 7 is softer than usual due to the temperature at the time of storage, etc., and that a larger amount of adhesive has been discharged before the set time has elapsed than was predicted to be discharged at the set time. When the operator confirms,

The switch section displayed as [STOP] is pressed to stop the bubble removal. Therefore, it is possible to prevent the adhesive from being discharged excessively, and it is possible to use the adhesive in the syringe 7 as effectively as possible in applying the adhesive to the substrate.

Similarly, in the automatic bubble removal, the nozzle number 3 is a large nozzle (a large nozzle is set at the rightmost part of the coating unit 6). For example, "small nozzle" is selected by automatic ejection and ejection is started. Is described. In this case, after the start of discharge, every time the discharge is automatically stopped, the operator checks the discharged adhesive, and if bubbles are mixed, selects the “small nozzle” again and repeats such an operation. Repeat until there is no more ejection. In such an operation method, the number of operations performed by the operator increases, but the operator may perform other operations from when the “small nozzle” is selected to when the discharge of the adhesive is completed and the discharge state is confirmed. As well as respond to differences in the state of the adhesive,
Extra discharge of the adhesive can be avoided as much as possible.

In this case, if the nozzle number 3 is a large nozzle and, for example, "large nozzle" is selected by automatic ejection, the operator confirms before the end of the ejection, and

[Stop] ”Unless the switch is pressed,
The adhesive for the set 80 seconds is discharged. When the “small nozzle” is selected as described above, the operator selects the “small nozzle” three times when the adhesive is soft, and
X3 = Adhesive discharge amount for 60 seconds may be sufficient.

When the discharge operations of all the application nozzles 6 are to be interrupted collectively, the "discharge all stop" at the bottom is required.

The user presses the switch section indicating "[STOP]" and presses the stop key 22. After the interruption, the operation key 21 is also turned off.

With the above, the operation of removing the bubbles contained in the unused adhesive loaded in the syringe 7 is completed. Thereafter, the operation can be shifted to a normal adhesive application operation. That is, R
The XY table 4 moves in the horizontal direction based on the NC data stored in the AM 16, the predetermined application nozzle 6 of the application unit 5 descends, and the adhesive having a predetermined application diameter is applied to a predetermined position on the printed circuit board 1. Applied.

As described above, according to the embodiment of the present invention,
Even in the case where the application diameters of the plurality of application nozzles are different from each other, it is possible to minimize unnecessary discharge of the adhesive accompanying the bubble discharge by the pressurizing time for each application nozzle.

Also, by setting the pressurizing time arbitrarily, the pressurizing time is set according to the state of the adhesive in the syringe (whether or not it is soft, etc.), so that the bubble can be discharged when the adhesive is soft and easy to discharge. It is possible to avoid extra discharge of the adhesive as much as possible, and it is possible to reliably discharge bubbles even when the adhesive is hard and difficult to discharge.

Further, even when the coating diameter of each of the plurality of coating nozzles is different, the pressing time can be set in accordance with the coating diameter by arbitrarily setting the pressing time for each coating nozzle. Extra discharge of the adhesive accompanying discharge of bubbles when the diameter is large can be avoided as much as possible, and discharge of bubbles can be reliably performed even when the application diameter is small.

Further, since the discharging operation can be forcibly stopped during the discharging operation of the adhesive, it is possible to avoid excessive discharging of the adhesive, and to apply the adhesive in the syringe onto the substrate as much as possible. Can be used effectively.

[0039]

According to the present invention, the operation for removing bubbles contained in the adhesive loaded in the syringe can be facilitated and simplified. Further, since the discharging operation can be forcibly stopped during the discharging operation of the adhesive, it is possible to prevent the adhesive from being discharged excessively, and the usability of the present apparatus is improved.

[Brief description of the drawings]

FIG. 1 is a front view of an adhesive application device.

FIG. 2 is a control block diagram of the adhesive application device.

FIG. 3 is a diagram showing an initial screen of a CRT.

FIG. 4 is a diagram showing a setup work screen of a CRT.

FIG. 5 is a diagram showing a bubble removal work screen of the CRT.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed circuit board 4 XY table 5 Coating unit 6 Coating nozzle 7 Syringe 8 Valve 15 CPU 16 RAM 21 Operation key 22 Stop key 27 CRT

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Jun Asai 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in SANYO Electric Co., Ltd. 4F041 AA05 AB01 BA05 BA10 BA13 BA35 4F042 AA06 BA06 CB03 CB08

Claims (5)

[Claims] 1. An adhesive application device for applying an adhesive in a syringe onto a printed circuit board via an application nozzle,
A storage unit for storing a time for opening the valve to pressurize the inside of the syringe by the pressurized supply source, an operation switch for instructing to open the valve, and storing in the storage unit based on operation of the operation switch A controller for controlling the valve so as to pressurize the inside of the syringe for a given time and discharge the adhesive containing air bubbles from the application nozzle. 2. An adhesive application device comprising a plurality of application nozzles having different application diameters, and applying an adhesive in a corresponding syringe on a printed circuit board via the application nozzle.
A storage unit that stores a time for opening the valve and pressurizing the inside of each of the syringes by the pressurized supply source for each application nozzle, an operation switch for instructing to open the valve, and operation of the operation switch. And a control device for controlling the valve so as to pressurize the inside of the syringe corresponding to the time stored in the storage unit and discharge the adhesive containing bubbles from the application nozzle. Coating device. 3. An adhesive application device for applying an adhesive in a syringe onto a printed circuit board via an application nozzle,
A setting unit for arbitrarily setting a time for opening the valve and pressurizing the inside of the syringe by the pressurized supply source, a storage unit for storing the time set by the setting unit, and an instruction for opening the valve. An operation switch, and a control device that controls the valve so as to pressurize the inside of the syringe for a time stored in the storage unit based on the operation of the operation switch and discharge the adhesive containing bubbles from the application nozzle. An adhesive application device, comprising: 4. An adhesive application device comprising a plurality of application nozzles having different application diameters, and applying an adhesive in a corresponding syringe on a printed circuit board via the application nozzle,
A setting unit for arbitrarily setting a time for pressurizing the inside of each of the syringes by the pressurized supply source for each application nozzle by opening a valve, a storage unit for storing the time set by the setting unit, and opening the valve Switch, and pressurizing the corresponding syringe for the time stored in the storage unit based on the operation of the operation switch to discharge the adhesive containing bubbles from the application nozzle. And a control device for controlling the valve. 5. The adhesive coating apparatus according to claim 1, further comprising a stop switch for forcibly stopping the discharging operation during the discharging operation of the adhesive.