JP2863475B2 - High viscosity fluid coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive,
Applying highly viscous fluids such as rice fields to materials to be applied such as printed circuit boards
Equipment to apply on the surface, And adhesive on the PCB
Apparatus for applying on the cloth surfaceIn particular, its coating
The present invention relates to detection and control of a cloth amount. [0002] 2. Description of the Related Art In a device for applying a high-viscosity fluid, a discharge device is provided.
A predetermined amount of high-viscosity fluid is discharged from the outlet pipe to
Some are applied in a spot shape on the surface to be applied. For example,
In the coating apparatus described in JP-A-59-152689,
The adhesive as a highly viscous fluid contained in a syringe
By a predetermined amount by supplying compressed air as pressurized gas
Discharge is performed from a discharge pipe. This kind of high viscosity
The type of highly viscous fluid to be applied
The application conditions are set appropriately according to the type, application, etc.
The fluid is controlled so as to be applied by a predetermined amount. [0003] However, highly viscous fluids
The properties, such as viscosity, are not always constant.
Even if the application conditions are set so that
Too much or too little, which hinders post-process operations
There was a problem that it could shift. Also, set the paint
If the cloth conditions are inappropriate and the coating is not performed well
In some cases. JP-A-59-152689 described above.
Of the coating equipment
If application stops for a certain period of time during
The high-viscosity fluid is discharged several times to the coating device separately from
Causes unevenness in coating amount due to hardening of highly viscous fluid
Although it is designed to eliminate
The amount of coating may vary due to changes in the properties of
The occurrence of inappropriate problems cannot be avoided. [0004] The first invention of the present application is based on the above circumstances.
To apply a spot-like high-viscosity fluid
High-viscosity fluid coating device with the function of accurately detecting the amount of cloth
The task was to obtainAlso,
The objects of the second invention and the third invention are that spots are applied.
Accurately detects the amount of spot adhesive applied and detects it
Automatically adjusts the amount of spot adhesive applied based on the results
By obtaining an adhesive application device with a function to control the amount
is there. [0005] The above object is achieved by the first invention.
The high-viscosity fluid application device from the tip.
The body is ejected and applied in the form of a spot on the surface of the material to be coated.
Discharge pipe, and fixedly provided with respect to the discharge pipe,
When the discharge tube and the material to be coated are brought close to each other, the discharge tube
Material before the tip ofSurface to be coatedAbut the discharge pipe
With the tip ofThe surface to be coatedDefine the gapBy coating
The three-dimensional shape of the spot-like high-viscosity fluid applied to the cloth surface
Almost constantStopper and apply to the surface to be coated
The spot-like high-viscosity fluid is placed almost perpendicular to the surface to be coated.
An imaging device that captures an image from a direction and an image captured by the imaging device
Based on the external area of the high-viscosity spot-shaped fluid
Application amount estimating means for estimating the application amount of pot-like high-viscosity fluid
Is solved by including. According to a second aspect of the present invention, an adhesive applying device is provided.
Position for each of the (a) electronic component fixing positions.
Printer in which a plurality of adhesive application positions are set in advance.
PCB positioning support for positioning and supporting the printed circuit board
Holding device, and (b) discharging the adhesive from the tip to
BoardAnd another material to be appliedOn the surface to be coatedRespectivelySports
(C) the discharge pipe to be applied in a
Is provided regularly, with the discharge pipeBoth coated surfacesAndRespectively
As they approach each other, the coating
Abuts the cloth surface andSurface to be coatedThe gap between
SpecifyThe spot-like contact applied to the surface to be applied
Make the three-dimensional shape of the adhesive almost constantStopper and (d)Previous
DistinctionBonding on the surface of the material to be coated
Imaging device that images the agent from a direction substantially perpendicular to the surface to be coated
(E) Printed circuit board positioning and supporting deviceAnd said another
Material to be coatedAnd the discharge pipe are parallel to the board surface of the printed circuit board.
Relative to the direction perpendicular to the
The material to be coated and the imaging device are placed on the surface to be coated of another material to be coated.
A moving device that makes relative movements in substantially parallel directions, and (f) settings
Discharge control device that discharges adhesive from discharge pipe according to conditions
(G) outside the spot-like adhesive imaged by the imaging device.
Estimate the amount of spot adhesive applied based on the shape area
And (h) the application amount estimating means.
Estimated adhesive application amount is a preset application amount
Coating conditions for changing the setting conditions so as to be approximately equal to
The problem is solved by including the case change means. In the third invention,Adhesion according to the second invention
(D))Of the imaging device
Apply the spot-shaped adhesive applied to the surface of the plate
Imaging device that captures images from a direction substantially perpendicular to
(e)The moving device of the
The direction perpendicular to the direction parallel to the surface of the printed circuit board with the discharge pipe
And positioning the printed circuit board.
Place the support device and the imaging device parallel to the surface of the printed circuit board.
By moving to a relative movement device
Will be resolved. [0008] [Operation and effect of the first invention] High viscous flow according to the first invention
In the body coating device, the discharge pipe and the material to be coated are in contact with each other.
When approaching, the stopper is closed before the tip of the discharge pipe.
The gap between the tip of the discharge pipe and the workpiece
Stipulate. In this state, a highly viscous fluid is discharged from the discharge pipe.
Therefore, highly viscous fluids are always coated in almost the same three-dimensional shape.
Applied to fabric. Therefore, spot-like high-viscosity fluid
There is a good correlation between external area and volume,
Is placed on the surface of the material to be coated.
Imaging fluid from a direction substantially perpendicular to the surface to be coated
The application amount estimating means detects spots imaged by the imaging device.
The spot-like height of a highly viscous fluid based on its external area
It is assumed that the amount of viscous fluid applied is estimated
The application amount of the high-viscosity fluid can be accurately detected.
According to the first invention, an imaging device having a simple configuration and an inexpensive imaging device
The amount of highly viscous fluid applied with high accuracy
Can be detected. [0009] [Actions and effects of the second invention]In the second invention, the adhesive is pressed.
Automatically apply to multiple electronic component fixing points on the printed circuit board
In the adhesive application device, the electronic parts
Before applying, print base material such as dedicated members
Perform a test strike on a test strike location on a member different from the plate,
As a result, measure the amount of adhesive attached to the test
Set adhesive application conditions based on measurement results.
That is what we made possible. Printed circuit board electronics
Measure the amount of adhesive properly applied to the part fixing position
Although it is possible to determine whether the application conditions are appropriate,
If the application conditions of the
The body becomes defective. Any electronic components mounted
If a printed circuit board that is not used is defective, it will be a loss.
However, on the printed circuit board (for example, on the back side)
If electronic components are already mounted, it is intolerable
Loss. On the other hand, according to the second invention,
Apply adhesive to the test-striking spot of a member other than the printed circuit board.
If the application conditions are inappropriate, check the application conditions
However, the printed circuit board does not become defective. That
Above, the trial hit location is a section where it is easy to measure the amount of adhesive that has adhered.
Can be selected. Measuring the amount of adhesive for imaging
Therefore, if it is performed, it is formed around the electronic component fixing position.
Printed circuit image may cause erroneous measurement.
However, when performing test hitting on a member other than the printed circuit board
Captures the surface properties (color, surface roughness, etc.) of the other member
Which is convenient. Further
In addition, another component should have a test strike position with the minimum required pitch.
Can be set, so many trial shots in a narrow area
Can be performed, and there is little waste.
In addition, in the adhesive applying apparatus according to the second invention, the
The gap between the tip of the discharge pipe and the surface to be coated is accurately set by the topper
Since the adhesive is applied in the specified state,
The three-dimensional shape of the glue is fixed and applied to the surface to be coated.
The external shape of the spot adhesive is imaged by the imaging device.
Is estimated by the application amount estimating means based on the imaging result.
Even if the estimation results (detection results) are highly accurate
Becomes With a simple configuration, the coating amount can be adjusted
Adhesive coating device that can be controlled It is done. [0010] [Actions and effects of the third invention]The third invention is the second invention
And imaging to detect the amount of adhesive applied,
With spot-shaped adhesive applied to members dedicated to trial application, etc.
No spot adhesive on the printed circuit board.
Is different. However, the spot to be imaged
Adhesive actually bonds electronic components to printed circuit boards
For electronic components on printed circuit boards
Not applied to the parts that are not
It may be. In the latter case, the test-coated
The image of the pot-like adhesive is taken and printed.
The effect similar to the second invention applied to a member different from the substrate is obtained.
Can be On the other hand, the spot-shaped adhesive to be imaged is actually
For bonding electronic components to printed circuit boards
In this case, substantially the same operation and effect as those of the first invention can be obtained.
It will be. [0011] BEST MODE FOR CARRYING OUT THE INVENTIONThe first invention and the third inventionBoth
As a common embodiment, a place where an electronic component is fixed on a printed circuit board
Figure 1 shows an adhesive application device that applies adhesive in spots
This will be described in detail based on the plane. FIG. 3 shows an adhesive application device.
It is a figure which shows the whole mechanism part, 10 is a horizontal plane in a figure.
5 is an X-axis table that moves in the X-axis direction. X axis
Table 10 is a ball screwed to a nut (not shown)
The servo is rotated by the servo motor 11 (see FIG. 6).
It is moved by being done. X-axis table 1
On the 0, the Y-axis direction orthogonal to the X-axis direction in the horizontal plane
A Y-axis table 12 that moves in the direction is provided. Y axis
The table 12 has a fixed nut 14 and a ball screw
16 and the ball screw 16 is connected to the servo motor 18.
Therefore, it is moved by being rotated. A side surface of the Y-axis table 12 parallel to the X-axis direction.
, A pair of coating units 24 are respectively holding members.
It is attached by a bracket 26. Y axis tape
12 constitutes a frame for supporting the coating unit 24.
The bracket 26 is attached to the Y-axis table 12.
Mounted up and down, holding the coating unit 24
It is raised and lowered by the lifting device 28 in this state. As shown in FIG.
A guide provided on one of the arms 30
A guide in which the block 32 is provided on the Y-axis frame 12
It is slidably fitted to the rail 34. Y axis table
12 is positioned so that the block 36 extends downward.
The guide rail 34 is vertically
It is mounted in the direction that extends in the direction
The bracket 26 rises vertically below the Y-axis table 12.
Let down. A gear housing is provided on the Y-axis table 12.
Is fixed so that a part thereof protrudes from the side surface.
The protrusions are shown in FIGS. 4 and 5.
As shown, the rack 42 is moved upward through a pair of slide bearings 44.
Mounted so that it can move downward. On the rack 42
Is a gear 4 rotatably supported by the gear housing 40.
6 are engaged. The gear 46 has a sector gear 48.
Provided integrally and meshed with another gear 50
The gear 50 is rotated by a servomotor 52.
The rack 42 is moved by being turned. The lower end of the rack 42 has a yoke shape.
The rod 54 is connected as shown in FIG.
The bracket 26 is attached to the rod 54 by the plate 5.
6 are connected. One end of the plate 56 is bra
The other end is fixed to the lower surface of the arm 30 of the
The rod 5 is slidably fitted to the rod 54 and the rod 5
4 and a spring spring 58 provided between the spring receiver 58 and the spring support 58.
Ring 60 is urged downward. Plate 56
Is fixed by a nut 62 screwed to the lower end of the rod 54.
The escape from the rod 54 is prevented. Bracket
The plate 26 is in a state where the plate 56 is in contact with the nut 62.
When being lifted and lowered integrally with the rod 54,
It is. Rack 42, gear 46, sector gear 48, gear 5
0, servo motor 52, rod 54, plate 56, etc.
The lifting device 26 is constituted. The rack 42 is provided with the bracket 26.
Allows a small distance descent after reaching the fixed descent end position
However, the extra descending distance depends on the pressure of the spring 60.
It is absorbed by shrinkage. The rising end of the rack 42 is
The photoelectric switch 66 provided in the gear housing 40
The lower end is detected by the plate 56 and the photoelectric switch 6
8 (see FIG. 3).
Servo motor based on the detection signal.
Data 52 is switched. The other arm 70 of the bracket 26 is
It extends horizontally from the lower end of the arm part 30,
The coating unit 24 is attached to the arm 70
I have. As shown in FIG. 1, the arm 70 has a cylindrical shape.
The member 72 is rotatable and axially
It is immovably fitted. The cylindrical member 72 has a stepped shape.
When the small diameter portion 76 is fitted to the sleeve 74,
First, the large diameter portion 77 is seated on the sleeve 74,
Rotation against the sleeve 74 by the
I have. Also, it protrudes from the arm 70 of the tubular member 72.
At the lower end, a discharge head 82 having one discharge pipe 80 is provided.
Fitted and engaged with pin 84 to prevent rotation
The upper part is fixed by a cap nut 86. To the discharge pipe 80
Is fixed with a stopper 88 extending downward from its tip.
When the adhesive is applied, the stopper 88 is
A certain gap is created between the discharge pipe 80 and the plate
It is being done. On the other hand, the sleeve 74 rotates around the arm 70.
As well as protruding from the arm 70
A nut 90 is screwed into the lower end to prevent axial movement.
Have been. A large-diameter gear is provided at the upper end of the sleeve 74.
92 are provided. The large-diameter gear 92 includes a pair of gears.
Can rotate around the axis extending vertically between the knits 24
Meshed with the small-diameter gear 94 (see FIG. 3)
The small-diameter gear 94 is rotated by a servomotor 96.
By being rotated, the sleeve 74 is rotated,
And the cylindrical member 72 is rotated. Large diameter gear 9
2, a small-diameter gear 94, a servomotor 96, etc. are a rotary drive device
The adhesive is applied two at a time.
To use a discharge head equipped with two discharge pipes 80
When changing the direction in which the two discharge pipes 80 are arranged,
When necessary, the cylindrical member 72 is rotated by the rotary drive device.
Turned over. Further, a syringe is provided at the upper end of the cylindrical member 72.
A zig 98 is attached. The syringe 98 has a bottom
The opening of the cylindrical member 100 is closed by the cap 102
And the piston 104 is airtight and slidable inside.
Noh is fitted. A syringe 98 is formed at the lower end
The large-diameter portion of the cylindrical member 72 at the small-diameter fitting projection 108
When it is fitted in the fitting hole 110 formed in
In the meantime, the holding member 112 fixed on the sleeve 74
Is held so that it cannot move in the axial direction and
You. The holding member 112 has a cylindrical shape with a bottom.
The bottom wall is fitted to the tubular member 72 and the sleeve 74.
And fixed to the sleeve 74 by bolts 114.
Have been. The opening of the holding member 112 has a pair of inward
A flange portion 116 is formed so that the
The dia 98 has an inner diameter capable of being fitted, and is diametrically spaced apart from each other.
Notches that reach the peripheral wall of the holding member 112
Opening 118 is formed. At the bottom of the syringe 98
Two diametrically spaced locations that extend outward
An engagement protrusion 120 is formed, and the
Holds syringe 98 in phase with notch
The fitting protrusion 108 is fitted into the fitting hole 110.
And by rotating the syringe 98
The engagement protrusion 120 engages with the flange portion 116 to
Direction movement is prevented, and the
In a state where relative rotation is prevented by friction generated on the contact surface
Will be retained. The inner surface (lower surface) of the flange portion 116
Is held from one side to the other in the circumferential direction
A slope that is inclined in a direction approaching the bottom wall of the member 112
And the cylindrical member 72 is rotated as the syringe 98 rotates.
It is designed to be pressed. Further, the cap 102 of the syringe 98
Is a hose 12 connected to a compressed air supply source (not shown).
2 are connected by a connection fitting 124. Hose 1
An electromagnetic directional control valve 125 (see FIG. 6) is provided in the middle of
The switching of the switching valve 125 causes the
The zigzag 98 is selectively connected to the compressed air supply source and the atmosphere.
It is. By supplying compressed air to the syringe 98,
The piston 104 is lowered, and the adhesive is
2, a passage formed in the discharge head 82 and a discharge pipe
A predetermined amount is discharged through the nozzle 80. FIG. 3 shows the present adhesive coating apparatus.
Read the reference mark provided on the printed circuit board
The camera 126 is connected to the coating unit 24 of the Y-axis table 12.
Attached in an adjacent position. Camera 126 is
It has a lens held by a barrel 127, and at the time of imaging,
Projector 128 provided below illuminates the reference mark
Have been to be. Criteria based on light emitted from the projector 128
The reflected light from the mark enters the lens, and the camera 126
An image corresponding to the outline of the reference mark is formed on the solid-state image sensor
And the image is converted into a signal and output.
The adhesive application position is set based on the fiducial mark.
The reference mark is read before the adhesive is applied.
It is. Based on the read results, the tables 10 and 12
The movement amount is corrected, and the coating unit 24 is
So that it can be accurately moved over the adhesive application position on the board
Has become. Although not shown, an adhesive coating device is used.
There is a printed circuit board positioning support device below
The printed circuit board is transported by the loading device and positioned.
The adhesive is applied while being positioned and supported by the support device.
Cloth is performed, and after application, the next process
Transported to Adhesive coating apparatus configured as described above
Is controlled by the computer 130 shown in FIG.
It is. The computer 130 is a CPU (Central Processing Unit)
132, ROM (Read Only Memory) 134, RAM
(Random access memory) 136
CPU 132, ROM 134, and RAM 136 have I /
Through the O port 138, the input device 140 and the operation start switch
Switch 142, stop switch 144, and adhesive application device.
An error that reports an error when an error occurs in the mechanism
An alarm 146 is connected. The input device 140 is used for the preliminary driving of the adhesive.
Number N₁ (3 times in this embodiment) and position, trial
Number of hits N_Two (3 times in this embodiment) and the position
Position, regular coating position and number of coating points N_Three ， Adhesive
Reference coating amount (printed by ejection in this embodiment)
External area of the spot-shaped adhesive attached to the substrate in plan view
), The compressed air supply time to the syringe 98,
Intervals and coatings for multiple strikes and trial shots
Adhesive applied by this coating device due to interruption of cloth
To determine if the material has cured and a pre-strike is necessary.
Reference time T required for₀ Etc.
You. [0027] Preliminary firing means that the adhesive in the syringe 98 is
When cured, remove the cured adhesive and discharge
This is the ejection to ensure that
Chichi is spot-shaped in a state where ejection is performed normally.
To measure the amount of adhesive applied and set the discharge conditions
The ejection to be performed. In the present embodiment,
For test and punching, fix electronic components on printed circuit boards
Deviated from the position, X-axis direction at a position unrelated to wiring
Shall be performed on a straight line parallel to the direction. Also, the adhesive
Preliminary, trial and regular application positions are printed
X set based on a reference mark provided on the substrate
It is represented by the Y coordinate. CPU 132, ROM 134, RAM
136 further includes servo motor drive circuits 150 and 15
2, 154, 155, electromagnetic directional control valve control circuit 156,
X-axis table via camera drive circuit 158
Servo motor 11 for driving, server for driving Y-axis table
Servomotor 52 of the lifting motor 28, cylindrical motor
Servo motor 96 for rotating members, electromagnetic directional control valve 125,
Camera 126, printed circuit board loading device, positioning support device
Storage and unloading devices are connected. The CPU 132 is provided with a timer 164.
In the RAM 136, a preliminary strike counter 16
6, Trial hit count counter 168, regular application count
170, F₁ ~ F_Three Flags 172, 174, 176,
Preliminary hit information memory 180, trial hit information memory 18
2, regular coating information memory 184, reference coating amount memory 18
6. Compressed air supply time memory 188, preliminary hit / test hit
Memory 190, preliminary / test execution interval
Memory 192, stop time memory 194, trial shot
Trial hitting area that stores the external area of the spot adhesive
A memory 196 is provided. Further, the ROM 134
Stores the program shown in the flowchart of FIG.
CPU 132 connects according to this program.
Controls the application of the adhesive. Hereinafter, the flowchart of FIG.
Pre-strike, test-strike, and regular application of adhesive
Will be described. Step S1 at the same time as the power supply to the apparatus is turned on.
(Hereinafter abbreviated as S1. The same applies to other steps.
Same. ), Each count of the counters 166 to 170
Number C₁ ~ C_Three To 0, and reset the flags 172 to 176.
On one printed circuit board
The count number n indicating the number of times of preliminary beating and trial beating is set to 0
Is performed, and the input device 140 is set in S2.
Is input. Input data is specified
Stored in the memories 180 to 188, 192, 194
You. Both the number of preliminary shots and the ejection position
It shall be stored in the memory 180. The same applies to trial shot and regular application.
The discharge position is input in the order of discharge,
For the count number, specify the ejection position data to be read.
And The count number 0 is related to the first ejection position.
Specify the data. Once this entry is complete,
If the completion data is input, the determination result of S3 becomes YES.
In S4, the reference mark is read, and after S5.
Below, the adhesive is firstly pre-punched. In S5, F₁ When the flag 172 is OFF
A judgment is made as to whether or not there is any
Unless you finish₁ The flag 172 is not set.
The result of the determination is YES, and in S6 the pre-strike
The cable movement information is read. Make a preliminary strike first
The position data is read, and this position data
Based on the position of the reference mark read in S4
After the correction, the X-axis table 10,
The Y-axis table 12 is moved, and a pair of coating units
24, the coating unit 2 which is used for regular coating
So that the discharge pipe 80 of No. 4 is located directly above the preliminary striking position
Moved. Subsequently, in S8, an adhesive is applied.
You. The servomotor 52 is started, and the rack 42 is moved.
The application unit held by the bracket 26
The knit 24 is lowered. The rack 42 has the stopper 8
8 can be moved a small distance even after touching the printed circuit board
The movement is the compression of the spring 60
The stopper 88 and the printed circuit board may be damaged.
The distance between the discharge pipe 80 and the printed circuit board is constant while being avoided
Is kept. The application unit 24 has been moved to the lower position.
If the servo motor 52 is stopped, the electromagnetic directional control valve 12
5 is switched to supply compressed air to the syringe 98.
You. As a result, the piston 104 is lowered, and the adhesive
Is ejected and applied to the printed circuit board in the form of spots.
If compressed air is supplied for a predetermined time,
The direction switching valve 125 is switched, and the syringe 98 is exposed to the atmosphere.
And discharge of the adhesive is stopped.
The motor 52 is activated and the coating unit 24 is raised.
Can be done. Next, at S9, F_Two Flag 174 is O
A determination is made as to whether or not it is an FF.
If YES, the counter 166 counts in S10.
Number C₁ Is increased by 1 and then in S11 C₁ But
N₁ It is determined whether or not (here, 3) or more.
However, initially, the determination result is NO, and the program is executed.
The line returns to S5. Next, the second preliminary strike in S6
The position is read out, and hereinafter, the determination result in S11 is YES.
S5 to S11 are repeatedly executed until the
Done. As a result, the operation is performed using the adhesive application device.
The adhesive has been discharged since the last application
At the outlet of the tube 80, it seems that some
N₁ This lump is removed by preliminarily
Thus, the ejection is normally performed. After the preliminary beating is performed as described above,
A trial shot is performed. Preliminary strike is N ₁ Performed S11
If the result of the determination is YES, in S12 F
₁ , F_Two After the flags 172 and 174 are turned on,
The execution of the gram returns to S5, but the result of this determination is NO.
Then, the determination result in S13 is YES, and the process proceeds to S14.
And the position of the first trial strike is read
A correction is made based on the position error of the quasi-mark. Then
In step S7, the coating unit 24 provided for preliminary striking moves.
And the discharge pipe 80 is positioned just above the test strike position.
Is placed. Then, the adhesive is discharged in S8.
However, the result of the determination at S9 is NO, and S15
Is YES, and S16 is executed. S1
In 6, the X-axis table 10 and the Y-axis table 12
It is moved and the camera 126 is applied by trial hitting.
It is moved just above the adhesive in the form of a spot. This place
In this case, the movement for trial driving read in S14 is performed.
This is done based on the motion information, and the camera 126
Spot-shaped bonding that has been beaten and adhered to the printed circuit board
The agent is imaged. The image of the adhesive in plan view is a solid-state image sensor.
It is connected to the child plane, converted to a binary signal, and
It is output to 130. Thereby the computer
Spot-shaped adhesive imaged by the calculation unit 130
Is calculated and recorded in the trial hitting area memory 196.
Remembered. Subsequently, at S17, the power of the counter 168 is read.
Und C_Two Is increased by 1 and the power is increased in S18.
Und is N_Two (3 in this case)
Is performed, but the determination result is NO at first,
The execution of the program returns to S5. Hereinafter, until the determination result of S18 becomes YES.
S5, S13, 14, S7-S9, S15-S18
It is executed repeatedly. And the trial hit is N_Two Done twice
If the result of the determination in S18 is YES, S19
In each of the three trial shots
The average value of the outer area of the glue is calculated and
The average value is compared with a preset reference value,
Compressed air into the syringe 98 so that the amount of application becomes the reference value.
Supply time is modified. If the average value is larger than the reference value, the ejection amount is large.
Compressed air so that the amount is too small
The supply time is shortened and the average value is smaller than the reference value.
If so, the compressed air supply time is lengthened. There is a reference value
Is set with a range of
Set within a relatively narrow range between the
The compressed air supply time set by one correction
Even if the quasi-coating amount does not coincide with the time to obtain,
It may be connected with the adhesive to be clothed or the amount of coating may be insufficient
Not to be. Thus, the compressed air supply time
After the correction has been made, at S20 F_Three Flag 176
It is turned ON, and the execution of the program returns to S5. The determination result in S5 is NO, and the determination in S13 is NO.
The result of the determination is also NO and S21 is executed, and the
Is read. First, glue first
The information on the position where the agent is applied is read out and the reference
The correction based on the peak position error is made.
The application unit 24 that was tested and moved
Then, application is performed in S8. The judgment result of S9 is N
The determination results of O and S15 are also NO, and
Count C of counter 170_Three Is increased by one,
An abnormal signal or a stop signal is issued in S23
Is determined. There is no abnormality in the mechanism of the coating device.
If the stop switch 144 is not operated,
The fixed result is NO, and in S24, C_Three Is N_Three ,sand
That is, it is determined whether or not the total number of the adhesive application positions is equal to or more than the total number.
However, the result of this determination is NO,
Returns to S5. Hereinafter, until the determination result of S24 becomes YES.
S5, S13, S21, S7 to S9, S15, S22
To S24 are repeatedly executed. During this time, the adhesive application equipment
If any abnormality occurs in the mechanical part of the
Or when the stop switch 144 is operated
The determination result in S23 is YES, and in S30 the apparatus
Is stopped. Next, in S31, the timer 16
After the count number T of 4 has been increased by one, in S32
Whether the stop has been released, that is, the operation start switch
A determination is made whether 142 has been operated. Until the result of the determination in S32 becomes YES, S3
1 and 32 are repeatedly executed, and the stop time is set to the timer 164.
Is measured by Stop was released and dispensing resumed
If so, the determination result in S32 is YES, and in S33
Stop time T is the stop reference time T₀ Judgment of greater or less
Is set. If the stop time is short, the determination in S33 is made.
The result is NO and the program execution returns to S23,
Dispensing starts from the position next to the position where dispensing was performed when stopped.
Will be Further, the stop time is long, and the result of determination in S33 is
Is YES, S34 is executed, and F₁ ~ F
_Three The flags 172 to 176 are turned off, and C₁ , C_Two But
Set to 0 and specify the position of preliminary and trial hits
A is added to all the X coordinate values
The number n of trial hits is set to one. Therefore, then S
When 5 or less are executed, S5, S9, S13, S15
Is affirmative and the preliminary strike and trial again
A beating is performed. In addition, tapes for preliminary and trial shots
A has been added to the value of the X coordinate that specifies the
As a result, X
At the position separated by the distance A in the axial direction,
Pre-punch and test-punch without overlapping with the adhesive
Will be performed. A predetermined number of preliminary shots and trial shots are performed.
If the compressed air supply time is corrected,
The application of the rule is resumed. Counter 170 is reset
Is not applied, the next position that was applied before the interruption was
Cloth is made. The electronic component fixing portion of one printed circuit board
If the adhesive is applied to all, the result of determination in S24 is
YES, and in S25, the predetermined number of printed circuit boards
It is determined whether or not the coating operation for the
Initially, the result of this determination is NO. Therefore, in S26
And F_Three The flag 176 is reset and C_Two , C_Three Is 0
At the same time as moving the table for preliminary
The value of the X coordinate that specifies the movement position returns to the value when the movement information was input
After that, n is set to 0 in S27 and the program
The execution returns to S5, and the next printed circuit board is conveyed.
The test application is performed, and the regular application is performed. Printed board
A trial shot is performed for each sheet. Adhesive for a predetermined number of printed circuit boards
Is completed, the determination result of S25 becomes YES.
At S28₁ ~ F_Three Flags 172 to 176
Reset, C₁ ~ C_Three Is set to 0 and S26
The X coordinate value of the ejection position data returns to the original
After that, n is set to 0 in S29 and the program
Execution ends. As described above, the adhesive application apparatus of the present embodiment
According to the report, prior to the application of the regular adhesive on the printed circuit board
A trial shot is performed, and based on the result, the syringe 98
The compressed air supply time of the
Wiring failure occurred due to application of adjacent adhesives
And the application amount is insufficient, which may hinder the fixing of electronic components.
This has the effect of disappearing. In addition, preliminary striking is performed prior to trial striking.
The test is performed with the adhesive discharged normally.
Therefore, the adhesive inside the syringe 98 is hardened to some extent.
It is not affected by the
Of the spot-shaped adhesive discharged in the same state as
By measuring the amount of application, the compressed air supply time can be increased
Can be set accurately. Further, the regular adhesive application is performed for a certain time or more.
Preliminary and trial shots are performed even if interrupted
As a result, the application amount may vary due to application interruption.
The effect of disappearing is obtained. As is apparent from the above description, the present embodiment
In the state, the camera 126 constitutes an imaging device, and
S1 in the flowchart of FIG.
6 to S18 and S20, and the spot shape of S19
The average value of the external area of the adhesive of
The part to be calculated constitutes the application amount estimating means.
The calculated average value is compared with the reference value to determine the coating amount (average
Value) is adjusted to the reference value.
The portion constitutes the application condition changing means. Also, compilation
Step S8 in the flowchart of FIG.
And a discharge control device.
Is composed. Also, the X-axis table 10, the servo mode
11, Y-axis table 12, servo motor 18, lifting device
The device 28 and the like are a printed circuit board positioning support device and a coating device.
And the imaging device in a direction parallel to the board surface of the printed circuit board.
A moving device that makes a relative movement in a direction perpendicular to
You. In the above embodiment, the print
Trial driving was to be performed for each substrate,
It may be performed for each of a plurality of sheets.
If there are many places where the adhesive is applied on the
A trial shot may be performed. In addition, trial shot,
Not limited to printed circuit boards,
You may make it perform to a member.This aspect is the fruit of the second invention.
It will be an embodiment. Another embodiment of the present invention is shown in FIGS.
Show. In this embodiment, a predetermined number of coatings are performed during regular coating.
Measure the amount of adhesive applied to the
The application conditions are changed. This embodiment
In the state shown in FIG.
As shown in FIG.
Number counter 202, coating number counter 204, coating amount meter
Measurement flag 206, coating information memory 208, reference coating amount
Memory 210, allowable application amount memory 212, compressed air supply
Time memory 214, coating area memory 216,
A memory 218 and a coating number memory 220 are provided.
The total number of application times counter 200 is
The total number of application times is counted, and a measurement number counter 202
Counts the number of times the adhesive is applied
The counter 204 counts the number of times the coating amount is not measured.
It is to count. The application information memory 208 is
The same as the regular application information memory 184,
The number α and the application position are stored. Reference coating amount memory 2
10 is the same as the reference coating amount memory 186,
The maximum and minimum values of the standard application amount determined over a certain range
And the value are stored. In addition, the allowable application amount memory 212
Adhesive necessary to fix electronic components to printed circuit board
It stores the upper and lower limits, and the maximum allowable
The amount and the minimum permissible amount are set in a wider range than the reference amount.
It is. The compressed air supply time memory 214 stores the compressed air supply time.
It is the same as the feeding time memory 188, and the coating area memory
216 is the same as the trial hitting area memory 196.
You. In addition, the number of measurements memory 218 stores the amount of application.
The number of times β to be performed is stored.
The number of times of application γ in which the measurement is not performed is stored. Also, RO
The flowchart shown in FIG. 9 is stored in M134.
Hereafter, based on this flowchart, the adhesive
The application will be described. Steps S101 to S107 correspond to steps S1 to S4.
The same as S21, S7, S8, and the application information memory 20
X-axis table 1 based on the table information stored in
0, the Y-axis table 12 is moved and sequentially moved to a predetermined position.
The next adhesive is applied. After applying to one place, go to S108
Number C of the total number of application times counter 200_TIs 1
Is increased, and then C in S109_TIs the total application times
It is determined whether the number is equal to or more than the number α.
The result is NO at the beginning.
It is determined whether or not the flag 206 is set.
You. The flag 206 is set in the initial setting in S101.
Has been set, the result of this determination is YES, and S1
In step 11, the camera 126 is set in the same manner as in step S16.
Is moved and the applied adhesive is imaged and
The external area is calculated and stored in the application area memory 216.
Is done. Subsequently, in step S112, a measurement counter is set.
202 count number C_nIs increased by 1 and then S11
C in 3_nIs greater than or equal to the number of measurements β
Done. This determination result is initially NO, and the program
The execution of the program returns to S105. Hereinafter, the determination result of S113
S105 to S113 are repeatedly executed until is YES
Is done. The measurement of the application amount is performed a predetermined number of times.
If the result is YES, the measurement is performed in S114.
After the average value of the obtained adhesive application area is calculated, S115
The average value is larger than the maximum allowable coating amount in
A determination is made as to whether or not it is. More adhesive than the maximum allowed
Printed circuit boards are unsuitable as products.
Therefore, it is not necessary to continuously apply the adhesive.
Alarm is issued at, and the amount of adhesive applied is abnormal.
The occurrence is notified to the worker. The worker receives this notification
Appropriate treatment based on the
Discarding, correction of the supply time of compressed air, and the like are performed. When the worker has completed those processes,
And the determination result of S118 is YES.
Program execution returns to S105, and the next print
The application of the adhesive to the substrate is started. On the other hand,
If the average value of the amount of cloth is smaller than the maximum
The determination result in S115 is NO, and the
A determination is made as to whether or not the volume is smaller than the minimum value.
If smaller, the determination result in S116 becomes YES and
S117 and S118 are executed in the same manner as described above,
If not, the amount of adhesive applied is within the allowable range.
Step S119 is executed. In step S119, the average value of the application amount is within the reference range.
It is determined whether the value is greater than the maximum value.
Is that the compressed air supply time is reduced in S121
In both cases, the contents of the memory 214 are rewritten in S122.
After that, S123 is executed, and the measurement number counter 21
8. The measurement count flag 206 is reset and the program
The execution of the program returns to S105. Also, the determination result of S119
Is NO, S120 is executed, and the average value is set to the reference range.
A determination is made whether it is less than the minimum value of the box. small
In this case, the supply time of the compressed air is
In step S122, the content of the memory 214 is rewritten.
On the other hand, if it is large, the coating amount is within the reference range.
As a result, the supply time of the compressed air is not corrected,
After the execution of S123, the program is executed in S105.
Return to Next, when S110 is executed, the judgment is made.
The result is NO, S125 is executed, and
The number C of the counter 204_NIs increased by 1 and then S12
C at 6_NIs greater than or equal to the number of applications γ
Done. This determination result is initially NO, and the program
The execution of the program returns to S105, and the application of the adhesive is performed subsequently.
It is. Hereinafter, S is executed until the determination result of S126 becomes YES.
105 to S110, S125, and S126 are repeatedly performed
It is. The application of the adhesive is performed γ times, and the determination result of S126 is obtained.
If the answer is YES, S127 is executed and the counter
204 is cleared and the measurement flag 206 is
After the setting, the program execution returns to S105. Next
When S110 is executed, the determination result is YES.
S111 to S124 are executed, and the adhesive application amount is
Measured and, if necessary, the compressed air supply time
Will be modified. Then, adhesive is applied α times to one printed circuit board.
Is applied, the determination result in S109 becomes YES.
In S128, the counters 200, 202, 204
Is cleared and the flag 206 is set.
After that, S129 is executed and the predetermined number of printed circuit boards are
It is determined whether or not the coating operation has been completed.
The determination result is initially NO. Therefore, the program
The execution returns to S105, and the next print conveyed
An adhesive is applied to the board. Expected number of puddings
When the application of the adhesive to the substrate is completed, S129
Is YES, and the program execution ends.
You. As described above, in this embodiment,
Measurement of the amount of adhesive applied to the board
Performed and, if necessary, based on the measurement results,
Since the air supply time is corrected, the amount of adhesive applied is always appropriate
Is kept. In particular, in the present embodiment, the application start time
Since the application amount is measured first, the application amount
Can be quickly dealt with when the
Unnecessarily applied adhesive or nonstandard amount of adhesive applied to many locations
The occurrence of a printed circuit board is avoided. Ma
If the amount of adhesive applied exceeds the allowable range,
Is notified and appropriate processing is performed.
Therefore, it is possible to avoid defective products being mixed with standard products.
It is. In this embodiment, one pre-print
The coating amount is measured for each fixed number of coatings on the printed circuit board.
The application amount was measured each time the application was performed.
You may do so. In addition, the average application
Amount and compare it with the allowable coating amount and the reference coating amount.
However, the coating amount obtained by one measurement was
You may make it compare with a cloth amount and a reference application amount. Further
In this embodiment, the same as in the previous embodiment,
Alternatively, a trial shot may be performed. In each of the above embodiments, the
By adjusting the compressed air supply time to the
The amount of adhesive applied was changed, but the amount of compressed air
Adjust the pressure or temperature of the adhesive, or a combination
The application amount may be changed depending on the application. The image of the applied adhesive is taken by the camera 1
The image is not limited to 26 but may be taken by other means.
Good. Furthermore, creamy solder is printed
For equipment other than adhesive coating equipment, such as equipment for coating substrates
The present invention can be applied. Other claims
Without departing from the scope, based on the knowledge of those skilled in the art,
The present invention can be implemented in a modified or improved mode.
You.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing a main part of an adhesive application device that is an embodiment common to the first invention and the third invention . FIG. 2 is a side view showing a main part of the adhesive application device. FIG. 3 is a front view showing a main part of the adhesive application device. FIG. 4 is a side sectional view showing an elevating device constituting the adhesive application device. FIG. 5 is a plan sectional view showing the lifting device. FIG. 6 is a block diagram of a control device that controls the adhesive application device. FIG. 7 is an RO of a computer which is a main component of the control device.
5 is a flowchart showing a portion of the program stored in M that is closely related to the present invention. FIG. 8 is a block diagram conceptually showing a configuration of a RAM of a computer serving as a main body of a control device of an adhesive application device which is another embodiment common to the first invention and the third invention . FIG. 9 is a flowchart illustrating a program extracted from a program stored in a ROM of a computer of the adhesive application apparatus according to another embodiment, which is relevant to the present invention. [Description of References] 10 X-axis table 12 Y-axis table 28 Elevating device 80 Discharge pipe 88 Stopper 98 Syringe 125 Electromagnetic directional switching valve 126 Camera 130 Computer

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Kunio Oe               19 Fuji, Usuiyama, Yamamachi, Chiryu-shi, Aichi Prefecture               Machine Manufacturing Co., Ltd. (72) Inventor Takashi Iwazuki               19 Fuji, Usuiyama, Yamamachi, Chiryu-shi, Aichi Prefecture               Machine Manufacturing Co., Ltd.                (56) References JP-A-58-223456 (JP, A)                 JP-A-57-190664 (JP, A)                 Shokai Sho 59-128735 (JP, U)

Claims (1)

(57) [Claims] A discharge pipe that discharges a high-viscosity fluid from the tip to apply the liquid in a spot shape on a surface to be coated of the material to be coated; When the discharge pipe is in contact with the surface to be coated of the material to be coated prior to the tip of the discharge pipe, and by defining a gap between the tip of the discharge pipe and the surface to be coated,
Approximately three-dimensional shape of spot-shaped highly viscous fluid to be applied
A stopper for a constant, the an imaging device for imaging a direction substantially perpendicular to spot high viscous fluid applied to the coated surface of the coating material on the coated surface, the spot-like high imaged on the imaging device A coating amount estimating means for estimating an application amount of the spot-like high-viscosity fluid based on an outer surface area of the viscous fluid. 2. A printed circuit board positioning and supporting device for positioning and supporting a printed circuit board in which a plurality of adhesive application positions are set in advance corresponding to each of the plurality of electronic component fixing positions; and the printed circuit board and its
A discharge pipe to be applied to each spot shape coated surface with another of the coating material and Re, fixedly provided with respect to the discharge pipe, said a discharge pipe both
When the surface to be coated is brought closer to each other, the surface to be coated is defined by contacting the surface to be coated before the end of the discharge tube and defining a gap between the end of the discharge tube and the surface to be coated.
The three-dimensional shape of the spot adhesive applied to the surface is almost constant
Stopper and a front Symbol another imaging device for imaging a direction substantially perpendicular to the spot-like adhesive applied to the coated surface of the coating material on the coated surface, the printed circuit board positioning supporting device and said another to Coating
The cloth material and the discharge tube are relatively moved in a direction parallel to a direction parallel to the plate surface of the printed circuit board and in a direction perpendicular to the plate surface of the printed circuit board. A moving device that relatively moves in a direction substantially parallel to a surface, a discharge control device that discharges the adhesive from the discharge pipe according to a setting condition, and an external area of the spot-shaped adhesive captured by the imaging device. An application amount estimating means for estimating the application amount of the spot-shaped adhesive based on the setting conditions such that the application amount of the adhesive estimated by the application amount estimating means becomes substantially equal to a preset application amount. And an application condition changing means for changing the application condition. 3. The adhesive coating device includes a syringe that contains an adhesive and supplies the adhesive to the discharge tube, and the discharge control device supplies a pressurized gas to the syringe to determine whether or not to supply a pressurized gas from the discharge tube. 3. The adhesive application device according to claim 2, wherein the adhesive application device is configured to control whether or not to discharge the adhesive, and to change a discharge amount of the adhesive by changing a supply time of the pressurized gas. 4. A printed circuit board positioning and supporting device for positioning and supporting a printed circuit board in which a plurality of adhesive application positions are set in advance corresponding to each of a plurality of electronic component fixing positions; and A discharge pipe for applying a spot on the surface of the printed circuit board to be applied, and is fixedly provided to the discharge pipe, and when the discharge tube and the surface to be coated of the printed circuit board are brought close to each other,
On the coated surface of the print substrate prior to the tip of the discharge pipe abuts, to define a gap between the tip and the coated surface of the discharge pipe this
With this, 3 of the spot-like adhesive applied to the surface to be applied is
A stopper having a substantially constant dimensional shape, an image pickup device for picking up an image of a spot-shaped adhesive applied to the surface to be coated of the printed board from a direction substantially perpendicular to the surface to be coated, the printed board positioning support device and the ejection A moving device that relatively moves the tube and the direction parallel to the plate surface of the printed circuit board and a direction perpendicular to the plate surface of the printed circuit board, and relatively moves the printed circuit board positioning support device and the imaging device in a direction parallel to the plate surface of the printed circuit board; A discharge control device that discharges the adhesive from the discharge pipe according to a setting condition; and an application amount of the spot adhesive is estimated based on an outer area of the spot adhesive captured by the imaging device. An application amount estimating unit, and changing the setting conditions such that the application amount of the adhesive estimated by the application amount estimating unit is substantially equal to a preset application amount. Adhesive applying apparatus characterized by comprising a coating condition changing means for.