JP3306220B2 - 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 a coating apparatus for applying a coating agent to a printed circuit board mounted on a work table through a coating nozzle.

[0002]

2. Description of the Related Art A prior art of this kind is disclosed in the specification attached to Japanese Patent Application No. 4-260359 previously filed by the present applicant. That is, the heating temperature of the nozzle tip is set for each nozzle in order to keep the temperature constant in consideration of the viscosity of the coating material at the time of ejection. At this time, the nozzle temperature is controlled by a temperature control (PID) operation that combines a proportional operation, an integral operation, and a differential operation. I. As the D constant, either a set value obtained by automatic setting or a standard value preset for each desired temperature is selected, or an arbitrary constant is set.

In this case, a problem occurs when a standard value set for each desired temperature is selected. That is, the temperature control (PID) constant obtained when the nozzle temperature is automatically set at an outside air temperature (room temperature) at a certain time is set in the ROM as a storage device in advance. , A constant corresponding to a desired set temperature is read and used as a temperature control constant. Therefore, there is no problem if the ambient temperature, which is the room temperature in the factory where the coating apparatus is installed, is substantially the same as the outside air temperature when the above-mentioned data is set. is there. In such a case, by switching to the automatic setting, a temperature adjustment suitable for a certain room temperature in the factory is performed.

However, in the automatic setting, since the temperature control constant is re-calculated on the spot, it takes more time to obtain the temperature control constant than in the temperature control operation based on the preset temperature control constant. As a result, there is a disadvantage that the time during which the apparatus cannot be operated is extended.

[0005]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to shorten the time required to obtain a temperature control constant corresponding to an environmental temperature and to improve productivity.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to a coating apparatus for applying a coating agent through a coating nozzle to a printed circuit board mounted on a work table, and measuring an ambient temperature near the coating nozzle. Temperature measuring device, a heating device for heating the nozzle, and a P.O. I. A temperature control device for controlling the temperature, a storage device for storing temperature control (PID) constant data suitable for various environmental temperatures corresponding to a set temperature of the nozzle, and an environmental temperature measured by the temperature measuring device. And a control device for causing the temperature control device to perform a temperature control operation based on the temperature control (PID) constant data stored in the storage device.

The present invention also provides a coating apparatus for applying a coating agent through a coating nozzle to a printed circuit board mounted on a work table, wherein the temperature measuring apparatus measures an ambient temperature near the coating nozzle. A heating device for heating the nozzle; I. A temperature control device for D control;
A storage device for storing temperature control (PID) constant data adapted to various environmental temperatures corresponding to a certain set temperature of the nozzle, and an environmental temperature at the start of heating by the heating device measured by the temperature measuring device. A control device for performing a temperature adjustment operation based on the temperature adjustment (PID) constant data stored in the storage device, based on the temperature adjustment device.

Further, the present invention relates to a coating apparatus for applying a coating agent via a coating nozzle to a printed circuit board mounted on a work table, wherein a temperature measuring device for measuring an environmental temperature near the coating nozzle; A heating device for heating the nozzle; I. A temperature control device for D control;
A storage device for storing temperature control (PID) constant data adapted to various environmental temperatures corresponding to a certain set temperature of the nozzle, and measuring an environmental temperature by the temperature measuring device when a certain condition is reached. A selection device for selecting temperature control (PID) constant data suitable for the environmental temperature stored in the storage device; and a temperature control device (PI) selected by the selection device in the temperature control device. .D) a control device for performing a temperature adjustment operation with constant data.

Further, the present invention applies a coating agent to a printed circuit board mounted on a work table through a coating nozzle, and comprises a temperature measuring device for measuring an environmental temperature in the vicinity of the coating nozzle; A heating device for heating; I. D temperature control device, a storage device for storing temperature control (PID) constant data suitable for various environmental temperature ranges corresponding to a certain set temperature of the nozzle, and constantly measured by the temperature measurement device. When the ambient temperature deviates from the ambient temperature range of the currently used temperature control (PID) constant data, the measured ambient temperature enters the temperature that matches the ambient temperature range stored in the storage device. Tone (P.I.
D) a selection device for selecting constant data, and a new temperature control (P.I.
And D) a control device for performing a temperature adjustment operation using constant data.

[0010]

According to the above arrangement, the control device adjusts various environmental temperatures corresponding to a certain set temperature of the nozzle stored in the storage device in the temperature control device based on the environmental temperature near the application nozzle measured by the temperature measuring device. Suitable temperature control (P.I.
D) A temperature adjustment operation is performed via the heating device using the constant data.

Further, the control device corresponds to a set temperature of the nozzle stored in the storage device in the temperature control device based on the environmental temperature near the application nozzle at the start of heating by the heating device measured by the temperature measurement device. A temperature adjustment operation is performed via a heating device with temperature control (PID) constant data suitable for various environmental temperatures. Further, based on the environmental temperature near the application nozzle measured by the temperature measuring device when a certain condition is reached, the selecting device adjusts the temperature suitable for various environmental temperatures corresponding to a certain set temperature of the nozzle stored in the storage device. The control device selects the P.I.D. (P.I.D.) constant data, and the controller sends the temperature adjustment (P.I.D.) selected by the selector to the temperature controller.
I. D) A temperature adjustment operation is performed via the heating device using the constant data.

Further, the selecting device is provided when the environmental temperature near the application nozzle constantly measured by the temperature measuring device is out of the environmental temperature range of the temperature control (PID) constant data currently used. Is selected, the temperature control (PID) constant data that matches the environmental temperature range stored in the storage device in which is stored. Then, the control device causes the temperature control device to perform the temperature control operation via the heating device with the new temperature control (PID) constant data selected by the selection device.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. 2 is a printed circuit board mounted on an XY table 4 that is moved XY by driving the X-axis motor 2 and the Y-axis motor 3. Incidentally, on the XY table 4, there is provided a discard plate (not shown) to which a coating agent described later is applied.

Reference numeral 5 denotes an application unit for applying the adhesive as an application agent stored in the syringe 7 via the application nozzle 6 onto the substrate 1 and includes four nozzles 6.
A desired one of the four nozzles 6 is selectively fixed to the coating unit 5, and is lowered onto the substrate 1 by the vertical movement of the coating unit 5 by a vertical mechanism (not shown), and is discharged to the tip of the nozzle 6. The applied adhesive is applied.

Reference numeral 10 denotes a recognition camera comprising a CCD camera for recognizing the diameter of the adhesive applied on the substrate 1. 11 is a substrate 1 received from an upstream device (not shown)
Is supplied to the XY table 4 by the supply conveyor.
Is a discharge conveyor for discharging the substrate 1 coated with the adhesive on the table 4 to a downstream device.

Reference numeral 15 shown in FIG. 1 denotes a RAM as a storage device for storing various data such as NC data relating to the coating operation.
Reference numeral 16 denotes a ROM as a storage device for storing various programs related to the coating operation. Reference numeral 17 denotes a CPU as a control device that controls the coating device. An operation unit 18 includes a start key 19, an operation key 20, a stop key 21, and the like.

Reference numeral 22 denotes an interface. Reference numeral 24 denotes a touch panel switch connected to the interface 22, which is mounted on the screen of the CRT 25 via a mounting tool (not shown). The touch panel switch 24 has a transparent conductive film coated on the entire surface of a glass substrate, and electrodes are printed on four sides. for that reason,
Apply a very small current to the surface of the touch panel switch 24,
When the operator touches, current changes occur on the four electrodes,
The coordinate value touched by the circuit board connected to the electrode is calculated. Therefore, if the coordinate values match the coordinate values in the coordinate value group stored in advance in the RAM 15 as a switch unit for performing the work, the work is performed.

Hereinafter, various setting operations will be described. First, when the power is turned on, the CRT 25 displays an initial screen shown in FIG. On the initial screen, operation switches for respective items of "production operation", "setup work", "data editing", "device maintenance" and "environment setting" are displayed, and a touch panel switch 24 is provided on the upper surface thereof. Installed.

The operation switches for "production operation" are used to start production operation, specify production operation steps, modify production model data,
Touch when performing operations such as teaching ... The operation switch section of "setup work" is used for model change, home return operation,
Touch to perform operations such as manual work and inching operation. The operation switch section of “Data Edit” is NC
Touch to perform operations such as data editing, device setting data editing, offset data editing, etc.

The operation switch section of "apparatus maintenance" is touched when operations such as apparatus operation information, information redisplay, apparatus diagnosis, test confirmation, teaching, etc. are performed. The operation switch section of the “environment setting”
Touch to perform operations such as buzzer setting and calendar setting. Here, if the operation switch section of "data edit" is touched, a "data edit" screen shown in FIG. 7 is displayed. On this screen, operation switches for respective items of “NC data”, “device setting data”, “test operation data”, and “offset data” are displayed.

The operation switch section of "NC data" includes operation data, coating condition data, coating data,...
Touch to perform setting operations such as. The operation switch section of “device setting data” is used to set the device timer, set the front and back process mode, set the device address, set the calendar,
Touch to perform setting operations such as.

The operation switch section of the "test operation data" is used to select the head rotation operation, to select the front and rear process signal ignoring, and so on
Touch to perform setting operations such as. The operation switch section of “offset data” is touched when performing an operation for setting such as device offset, nozzle offset, nozzle holder offset... On this screen, the operation switch of "NC data" is touched to display the "NC data edit" screen shown in FIG. This screen has operation switches for “operation data” and “setup data”, and displays the application condition data, discard data, and the number of used steps of the application data, which will be described later.

Then, when the operation switch of "operation data" is touched, a screen of "operation data" relating to the application diameter recognition operation shown in FIG. 9 is displayed, for example. On this screen, conditions for performing the application diameter recognition operation for each nozzle 6 are set. For example, for the nozzle 6 of the nozzle number 1, the “operating condition” is “actual application count” (based on the number of application times by the nozzle 6). When touching (upper left of the screen), the switch section is turned on, and the data setting display section displayed at the lower left of the screen displays “Nozzle 1 operating condition: −−−− (the current setting operating condition is displayed. Is not set.) Is displayed, and an operation switch unit for each item of each condition is displayed at the lower right of the screen. Touching an operation switch unit of a desired (actual number of times of application) among these is displayed. "----"
The portion is displayed as "actual application count", and the setting is made by touching the "set" key at the lower right, and the illuminated operation switch section is displayed as the actual application count. ), The actual number of times of application is set to 1000 times (similarly, when an operation switch section for setting the actual number of times of application to the nozzle 6 of the nozzle number 1 is touched, the switch section is turned on and “Nozzle 1 actual application number” is displayed on the display section). Number of times: −−−− (The number of times set up to now is displayed. No data is currently set.) ”Is displayed, and the operating condition of each item displayed until then at the lower right of the screen is displayed. Instead of the operation switch unit, an operation switch unit of a “numeric keypad” (not shown) is displayed, and the desired actual number of application times (1
000), the "----" portion of the display section is displayed as "1000", and the setting is made by touching the "SET" key at the lower right. Is displayed. ), The “disposal operation” is set to “do” (when the operator touches an operation switch section for setting the number of discards for the nozzle 6 of the nozzle number 1), the switch section is turned on and “nozzle 1
Negative operation: --- (The current setting is displayed. No data is currently set.) Is displayed and the "numeric keypad" which was displayed at the bottom right of the screen
In place of the operation switch section, each operation switch section (not shown) of “Yes” and “No” is displayed, and when “Yes” is input, the “−−−” portion of the display section is displayed as “Yes”, The setting is made by touching the “SET” key at the lower right, and the lit operation switch section is displayed when it is pressed). That is, when the counter (not shown) of the RAM 15 counts that the actual number of times of application of the nozzle 6 has reached 1000, the discarding operation is performed and then the application diameter recognition operation is performed. Hereinafter, data is similarly set for the other nozzles 6. That is, the nozzle 6 of the nozzle number 2
Is set such that the "operating condition" is "actual application time" (based on the usage time measured by a timer (not shown)) and the time is 120 seconds, and the "discard operation" is performed. That is, when the timer measures that the actual application time of the nozzle 6 has reached 120 seconds, the discard operation is performed, and then the application diameter recognition operation is performed. Nozzle 6 with nozzle number 3
Indicates that the “operating condition” is “the number of substrates”, the number is “10”,
The setting is made when "discard operation" is performed. That is, the nozzle 6 indicates that the substrate 1 on which the coating operation has been performed has been discharged ten times from, for example, the XY table 4 to the discharge conveyor 12 side.
When a counter (not shown) in M15 counts, the discard operation is performed, and then the application diameter recognition operation is performed. Further, for the nozzle 6 of the nozzle number 4, the “operating condition” is set to “all conditions” (“the actual number of times of application”, “the actual time of application”, “the number of substrates”).
When any one of the conditions set in the above is satisfied, the application diameter recognition operation is performed. ), The actual number of application times is 500, the unapplied time is 60 seconds, the number of substrates is 5, and the "discard operation" is not performed. That is, when any of these operating conditions is satisfied, the nozzle 6 performs the application diameter recognition operation without performing the discard operation.

Further, it is possible to prevent the application diameter recognizing operation from being performed by touching the operation switch of "not recognized" on the screen shown in FIG. Next, when the user touches the "page feed" operation switch at the center of the lower part of the screen, the "operation data" screen relating to the dispensing application operation shown in FIG. 10 is displayed. In this screen, the conditions for discarding each nozzle 6 are set. For example, nozzle number 1
The nozzle 6 has an “operating condition” of “number of unapplied times” (based on the number of times of application by another nozzle 6 without using the nozzle 6). When the switch section (upper left of the screen) is touched, the switch section is turned on, and the data setting display section at the lower left of the screen displays "Nozzle 1 operating condition:----(The current setting operating condition is displayed. Is not set.) "And an operation switch section for each item of each condition is displayed at the lower right of the screen. Touching an operation switch section of a desired (unapplied number of times) among the operation switch sections displays the display. The “−−−−” part is displayed as “unapplied count”,
It is set by touching the "Setting" key at the bottom right,
The lit switch section is displayed as the number of unapplied times. ), The number of unapplied times is set to 100 (when an operation switch unit for setting the number of unapplied times for the nozzle 6 of the nozzle number 1 is touched, the switch unit is turned on and the display unit displays “Nozzle 1 number of unapplied times: −−−− (The number of times set up to now is displayed. No data is currently set.) ”Is displayed and the operation switch of the operating condition for each item that has been displayed so far at the lower right of the screen is displayed. When the desired number of unapplied times (100) is input by operating the “numeric keypad” (not shown), the “−−−−” part of the display unit is displayed. "100" is displayed, and the lighted switch unit which is set by touching the "set" key at the lower right is displayed as 100.), and the number of discards is set to three times. (Similarly the nozzle When the operator touches an operation switch section for setting the number of times of discarding of the nozzle 6 of No. 1, the switch is turned on, and the display section displays “Number of times of nozzle 1 discarding: −−−−− (the number of times set up to now is displayed. . No data is currently set.). When the desired number of discards (3) is input by operating the "numeric keypad", the "----" portion of the display section is displayed. "3" is displayed, and the setting is made by touching the "SET" key at the lower right, and the lit switch section is displayed as "3"). That is, the number of unapplied times of the nozzle 6 is 10
When a counter (not shown) of the RAM 15 counts that the number of times has reached zero, the discard operation is performed three times. Hereinafter, data is similarly set for the other nozzles 6. That is, for the nozzle 6 of the nozzle number 2, the “operating condition” is “unapplied time” (based on the unused time measured by a timer (not shown)), and the time is 60.
The second and the “number of discards” are set to two. That is, when the timer measures that the non-application time of the nozzle 6 has reached 60 seconds, the discard operation is performed twice. For the nozzle 6 of the nozzle number 3, the “operating condition” is “number of substrates”,
The number is set to five, and the “number of discards” is set to four. That is, the nozzle 6 performs the discard operation four times when the counter (not shown) in the RAM 15 counts that the applied substrate 1 has been discharged from the XY table 4 to the discharge conveyor 12 five times. . Furthermore, the nozzle 6 of the nozzle number 4 is discarded when the “operating condition” satisfies any of the conditions set in “all conditions” (“unapplied times”, “unapplied time”, and “number of substrates”). Hit.)
The number of unapplied times is set to 50, the unapplied time is set to 30 seconds, the number of substrates is set to 2, and the number of discards is set to 1. That is,
The nozzle 6 performs a discard operation once if any of these operating conditions is satisfied.

Further, "do not discard" on the screen of FIG.
By touching the operation switch section, the discard operation may not be performed. Then, the user touches the operation switch section of “Return to screen” at the lower left of the screen to return to the screen of “Edit NC data” in FIG. Next, by touching the operation switch unit of "Restore screen" on the screen of "Edit NC data", the screen is returned to the screen of "Data edit" shown in FIG. On this screen, when the operation switch section of “apparatus setting data” is touched, a screen of “apparatus setting data” shown in FIG. 11 is displayed. On this screen, each operation switch section of "apparatus timer setting", "appropriate process mode setting", "apparatus address setting", "application nozzle setting", "application pressure setting", and "nozzle acceleration / deceleration setting" is displayed. Is done.

On this screen, when the user touches the operation switch section of "application nozzle setting", a screen of "application nozzle setting" shown in FIG. 12 is displayed. In this screen, data for each item of “nozzle code”, “nozzle angle”, and “nozzle pattern (A, B)” are set for each nozzle 6. For example, when an operation switch for setting the “nozzle code (shows the shape of the nozzle, etc.)” for the nozzle 6 of the nozzle number 1 is touched, the switch is turned on and “nozzle 1 nozzle” is displayed on the data setting display at the lower left of the screen. code:
−−−− (The set value up to now is displayed. No data is currently set.) ”Is displayed, and the respective operation switches of the“ numeric keypad ”are displayed at the lower right of the screen.
When a desired nozzle code (0) is input by operating the “numeric keypad”, the “−−−−” portion of the display section is displayed as “0”, and the lower right “setting” key is touched. And the switch section is displayed as 0.
It should be noted that the nozzle codes are set in advance from 0 to 255 on the setting screen (not shown). Next, when the operation switch for setting the “nozzle angle” for the nozzle 6 of the nozzle number 1 is touched, the switch is turned on and “Nozzle 1 nozzle angle: −−−−” is displayed on the display.
(The set value up to now is displayed. No data is currently set.) "Is displayed and the desired nozzle angle (0) is input by operating the" numeric keypad ". The “−−−−” portion is displayed as “0”, the setting is made by touching the “set” key at the lower right, and the switch section is displayed as “0”. Further, the nozzle 6 of the nozzle number 1
(Pitch interval between two nozzles in the case of two or three nozzles (pitch data is one (A) in the case of two nozzles, pitch data is two in the case of three nozzles)
(A and B) are set. Touching the operation switch section of the ")" setting turns on the switch section, and the display section displays "Nozzle 1 Nozzle Pattern A: --------- (The set value up to now is displayed. Currently, no data is set." .)) And input the desired nozzle pattern A (0.00) by operating the "numeric keypad", the "----" portion of the display section is displayed as "0.00". Is set by touching the "SET" key at the lower right, and the switch section is displayed as 0.00. When the operation switch for setting the “nozzle pattern (B)” for the nozzle 6 of the nozzle number 1 is touched, the switch is turned on, and the display shows “nozzle 1 nozzle pattern B: −−−− (the current setting). Displays the value.
Currently no data is set. )) And inputting a desired nozzle pattern B (0.00) by operating the "numeric keypad".
The "-" portion is displayed as "0.00", and the setting is made by touching the "Setting" key at the lower right, and the switch section is displayed as 0.00. Hereinafter, data for the nozzle 6 of each nozzle number is similarly set.

Next, after touching the operation switch section of "return screen" at the lower left of the screen to return to the screen of "apparatus setting data", if the operation switch section of "application pressure setting" is touched, FIG. Is displayed. This screen is used to set the pressure to be applied to the syringe 7, and the respective operation switches of “gauge 1”, “gauge 2”, “gauge 3”, and “gauge 4” are displayed. By touching the operation switch unit, a screen for data setting is displayed on the display unit and a "numeric keypad" is displayed, and a desired set value is set by the "numeric keypad". In FIG. 13, 9.9 is used for convenience.
9 is displayed.

Further, after touching the operation switch section of "return screen" at the lower left of the screen to return to the screen of "device setting data", the operation switch section of "initial screen" at the upper left of the screen is touched. The screen of the “initial screen” shown in FIG. 3 is displayed. Subsequently, the operation switch section of "production operation" is touched to display the screen of "production operation (during stop)" shown in FIG. 4, and the operation switch section of "sub menu" at the lower right of this screen is touched. The screen of the “sub menu” shown in FIG. 6 is displayed. In this screen, "Production operation step designation",
“Operation method setting”, “Production model data correction / teaching”,
The operation switch unit for each item of "nozzle maintenance", "production model setup work", "information redisplay", "production management information", and "discarded plate maintenance" is displayed.

The operation switch section of "designation of production operation step" is a production model program by step designation (continuation of production operation / continuation of production operation step operation / single component application).
Touch to give a start instruction. `` Operation method setting ''
Is touched when setting and changing various operation methods.

The operation switch section of "modification / teaching of production model data" is touched when modifying and teaching production model data (data such as NC data relating to coating operation).
The operation switch section of “Nozzle Maintenance”
Touch to perform maintenance operation of. The operation switch section of “production model setup work” is touched when performing setup work related to the production model program.

The "information redisplay" operation switch section is touched when an abnormality or device information which has occurred so far is displayed in chronological order. The operation switch section of "Production management information"
Touch this when you want to know information such as production model operation information, discarded application information, application frequency information, nozzle temperature information, application diameter recognition information, material outage automatic stop information, and cycle time information.

The operation switch section of "maintenance of discarded plate" is touched when performing maintenance of the discarded plate. On this screen, when the operation switch section of “driving method setting” is touched, a “driving method setting” screen shown in FIG. 14 is displayed. On this screen, the respective operation switches of “setting of nozzle temperature” and “setting of automatic material stop function” are displayed. Then, when the operation switch of “Nozzle temperature setting” is touched, a “Nozzle temperature setting” screen for setting whether to automatically set the nozzle temperature shown in FIG. 15 is displayed. On this screen, “Set temperature”, “Allowable temperature difference”,
Each operation switch unit for setting “PID constant automatic setting selection” and a display unit for “PID constant automatic setting status” are displayed. For example, when the operation switch section of “set temperature” for the nozzle 6 of the nozzle number 1 is touched, the switch section is turned on, and the display section for data setting at the lower left of the screen displays “nozzle set temperature: −−−− ( The set value is displayed. No data is currently set.) "Is displayed, and the respective operation switches of the" numeric keypad "are displayed at the lower right of the screen. And "numeric keypad"
Is operated to input a desired set temperature (for example, 30.0), the "----" portion of the display section is displayed as "30.0", and the "SET" key at the lower right is touched. And the switch section is displayed as 30.0. Next, when the operation switch for setting the “permissible temperature difference” for the nozzle 6 of the nozzle number 1 is touched, the switch is turned on and the display shows “Nozzle 1 permissible temperature difference: −−”.
--- (The current set value is displayed. No data is currently set.) "Is displayed, and the desired allowable temperature difference (for example, 10.0) is input by operating the" numeric keypad ". The "----" portion of the display section is displayed as "10.0", the setting is made by touching the "SET" key at the lower right, and the switch section is displayed as 10.0. Further, when the operation switch section of “PID constant automatic setting selection” for the nozzle 6 of the nozzle number 1 is touched, the switch section is turned on and “Nozzle 1P.I. Automatic setting of D constant: No (the current setting conditions are displayed) "is displayed, and the operation switches" Yes "and" No "are displayed at the lower right of the screen. Then, when the user touches the operation switch of "Yes", the "None" portion of the display unit becomes "Yes".
Is set by touching the “SET” key at the lower right, and is displayed when the switch is operated (FIG. 1).
6). Hereinafter, data is similarly set for the other nozzles 6. Then, after the data setting is completed, the operation key 2
When 0 is pressed, automatic setting is started via a temperature controller 27 (see FIG. 1) comprising a multi-point one-board temperature controller type E5ZD manufactured by OMRON Corporation for controlling the temperature of the nozzle 6.

The setting operation when the automatic setting is not performed will be described. First, "Page Forward" at the bottom center of the screen
By touching the operation switch section, a "nozzle temperature setting" screen for arbitrarily setting the nozzle temperature setting shown in FIG. 17 is displayed. This screen displays “P” for each nozzle 6.
The respective operation switches of (proportional) constant, “I (integral) constant” and “D (differential) constant” and a display for displaying the nozzle temperature set value are displayed. On this screen, for example, when an operation switch section of “P (proportional) constant” for the nozzle 6 of the nozzle number 2 is touched, the switch section is turned on and “Nozzle 1 P ( (Proportionality) constant: ------ (The set value up to now is displayed. No data is currently set.) "Is displayed, and the operation switch section of the" numeric keypad "is displayed at the lower right of the screen. When a desired P (proportional) constant (for example, 12.3) is input by operating the “numeric keypad”, “−−−” of the display section is displayed.
--- "is displayed as" 12.3 ", and" Setting "
The setting is made by touching a key, and the switch section is displayed as 12.3. Hereinafter, data for the nozzle 6 of the nozzle number 2 is similarly set. Then, when the operation key 20 is pressed after the setting is completed, each constant for the nozzle 6 of the nozzle number 2 of the temperature controller 27 for controlling the temperature of the nozzle 6 is updated. Hereinafter, similarly, "I (integral)
Data is also set for "constant" and "D (differential) constant". Further, the set temperature value set on the screen of FIG. 16 is displayed on the nozzle temperature set value display section.

Further, when the user touches the "page feed" operation switch at the bottom center of the screen, "nozzle temperature setting" shown in FIG. 18 is performed by using a standard value of a temperature control constant set in advance in the ROM (16). The "Nozzle temperature setting" screen is displayed. On this screen, the operation switches of “Nozzle 1”, “Nozzle 2”, “Nozzle 3”, “Nozzle 4” and “P (proportional) constant”, “I (integral) constant”, "D
A display section for displaying each value of (differential) constant "and" nozzle temperature set value "is displayed. On this screen, when the operation switch section of "nozzle 3" for designating the nozzle 6 of the nozzle number 4 is touched, the switch section is turned on, and then the operation key 20 is pressed.
6 through a temperature controller 27 based on a standard value in
To P. I. The temperature control operation is performed by D control. The display unit displays the standard values stored in the ROM 16.

Hereinafter, the nozzle 6 of the nozzle number 4 is also operated in a desired manner from among the above-described embodiments of setting the nozzle temperature. Also, in the above-described nozzle temperature setting screen shown in FIG. 18, when the temperature of all the nozzles 6 is automatically set on the automatic setting screen shown in FIGS. 15 and 16 at a certain outside temperature (room temperature), Are set in the ROM 16 in advance, and a constant corresponding to a desired set temperature is read and used as a temperature control constant. Therefore, if the ambient temperature, which is the room temperature in the factory where the coating apparatus is installed, is significantly different from the outside temperature when the above-mentioned data is set, the temperature control may not be possible.

In this case, the operation switch section of "page feed" is touched on the screen of FIG. 18 to display the screen of FIG. This screen displays the temperature control (P.
I. D) A screen for selecting whether or not to perform automatic setting based on constants, for setting “set temperature”, “permissible temperature difference”, and “selection of automatic setting of PID constant suitable for environmental temperature”. Each operation switch unit and a display unit of "environmental temperature measurement display" are displayed. For example, when the operation switch section of “set temperature” for the nozzle 6 of the nozzle number 1 is touched, the switch section is turned on, and the display section for data setting at the lower left of the screen displays “nozzle set temperature: −−−− ( The set value is displayed. No data is currently set.) "
Is displayed, and the respective operation switches of the “numeric keypad” are displayed at the lower right of the screen. Then, when a desired set temperature (for example, 30.0) is input by operating the “numeric keypad”, the “−−−−” portion of the display section is displayed as “30.0”, and the “set” in the lower right is displayed. The setting is made by touching the key, and the switch section is displayed as 30.0. Next, when the operation switch for setting the “permissible temperature difference” for the nozzle 6 of the nozzle number 1 is touched, the switch is turned on and the display shows “Nozzle 1 permissible temperature difference: −−−−”.
(The set value up to now is displayed. No data is currently set.) "Is displayed and the desired allowable temperature difference (for example, 10.0) is input by operating the" numeric keypad ". The “−−−−” portion of the display section is displayed as “10.0”, the setting is made by touching the “set” key at the lower right, and the switch section is displayed as 10.0. Also, when the operation switch section of “Automatic selection of PID constant suitable for the environmental temperature” for the nozzle 6 of nozzle number 1 is touched, the switch section is turned on and the data setting display section at the lower left of the screen is displayed. "Nozzle 1 Automatic setting of PID constant suitable for environmental temperature: No (current setting condition is displayed)" is displayed, and "Yes" and "No" are displayed at the lower right of the screen. The operation switch section is displayed. Then, when the operation switch section of “Yes” is touched, the “No” portion of the display section is displayed as “Yes”, and the setting is made by touching the “Setting” key at the lower right, and the display is performed when the switch section is operated. (See FIG. 19). Hereinafter, data is similarly set for the other nozzles 6. Then, when the operation key 20 is pressed after the data setting is completed, the automatic setting is started via the temperature controller 27.

That is, several types of temperature control constants of a predetermined set temperature are set in advance in the ROM 16 for each of the outside air temperature (environmental temperature) ranges. When the production operation is started, first, as shown in FIG. Temperature sensor 30 installed near 6
(In this embodiment, the right and left two sides of the recognition camera 10 are interposed.
One temperature sensor 30 corresponds to one nozzle 6. Note that a temperature sensor may be associated with each nozzle. ), The ambient temperature of each nozzle 6 is measured, and the CPU
Reference numeral 17 designates the measured temperature as an environmental temperature initial value, automatically selects a temperature control constant suitable for the environmental temperature range in which the measured temperature falls from the data in the ROM 16, and sets the heater 28 to P through a temperature control controller 27. . I. The temperature control operation is performed by D control. The display section of the environmental temperature display displays the environmental temperature at that time measured by the temperature sensor 30.

Further, after that, the temperature sensor 30 continues to detect the environmental temperature of each nozzle 6, and when the environmental temperature exceeds the applicable range of the currently used temperature control constant, the CP receiving the signal receives the signal.
U17 replaces the current temperature control constant with a new temperature control constant suitable for the environmental temperature range in which the measured environmental temperature falls, and stably maintains the temperature control operation. Hereinafter, the operation will be described.

First, when the power is turned on, the CRT 25 displays an initial screen shown in FIG. On this screen, operation switches for respective items of “production operation”, “setup work”, “data editing”, “device maintenance”, and “environment setting” are displayed. When the operation switch section of "production operation" is touched on this initial screen, a screen of "production operation (application)" shown in FIG. 4 is displayed. Then, on this screen, start key 1
When 9 is pressed, the "stop" screen shown in FIG. 4 is replaced with the "running" screen shown in FIG. 5, and the production operation by the coating apparatus is started.

Here, the production operation is not started until each nozzle 6 reaches the desired temperature based on the conditions set on the nozzle temperature setting screens of FIGS. Also,
At the start of operation, the number of unapplied times set in the counter of each nozzle 6, the unapplied time set in the discard timer, and the number of substrates detected by the counter, which are the conditions for normally discarding the operation data in FIG. Since none of them has reached the set value, the application operation is started as it is.
In addition, you may make it carry out unconditionally at the start of driving | operation.

The coating operation is performed based on the NC data related to the coating operation shown in FIG. That is, step 000
In FIG. 21, the adhesive is indicated by Z (angle data) Z1 at the coordinate position (X1, Y1) on the substrate (1) indicated by the X coordinate data [mm] or the Y coordinate data [mm] by the application condition data shown in FIG. Apply under the application conditions. D of NC data in FIG.
(Application condition data number) is set to 001, and the nozzle of nozzle number 1 is set based on the nozzle number 1, the gauge 1, the application time T1, and the application diameter D1 set to 001 corresponding to the application condition data in FIG. Air is supplied from a supply source to the syringe 7 through an air tube (not shown) for an application time (discharge time) T1 by applying a pressure of the gauge 1 to the syringe 6 and a predetermined amount of the adhesive is discharged from the nozzle 6 to the substrate 1. The adhesive is applied with the application diameter D1 on the top, and selection data (“Yes” or “No”) for setting whether or not to recognize the application diameter is set in the application condition data. In this case, Since “Yes” is set, the application diameter recognition operation is performed before the main application operation. Therefore, if the in-board recognition data (R) in the discarded data shown in FIG. 22 is declared, the blank portion on the board 1 set in step 0011 indicated by the in-board discarding step counter (not shown) An adhesive is applied to the X and Y coordinate positions. The X-axis motor 2 and the Y-axis motor 2 are positioned so that the recognition camera 10 is located above the applied adhesive.
The XY table 4 is moved by driving the shaft motor 3.

Then, the applied adhesive is recognized by the recognition camera 10. A calculation device (not shown) in the CPU 17 calculates the diameter of the adhesive based on the imaging result. This is compared with setting data (including an allowable range) stored in the RAM 15 by a comparing device (not shown), and it is determined whether or not the diameter is within the allowable range. If it is determined that the value does not fall within the allowable range, C
The PU 17 adjusts the ejection amount of the adhesive by correcting the application time (ejection time) in consideration of the deviation from the allowable range during the main application operation, and applies the adhesive. If it is within the allowable range, the operation proceeds to the main application operation under the same conditions. A plurality of application points to be recognized at the time of the application diameter recognition are set, and an average value of arbitrary recognition data in the application points (for example, five points are recognized, an average value of three points excluding the maximum value and the minimum value) is obtained. Correction may be applied at the next main application.

Next, in step 0002, the substrate 1
Nozzle number 1 at upper coordinate position (X2, Y2) at angle Z2
Is applied to the nozzle 6 with the pressure of the gauge 2 for the application time T2 to apply the discharged adhesive with the application diameter D2. In this case, since “not performed” is set in the application diameter recognition selection data, the main application operation is performed as it is.

Thereafter, the coating operation is continued in the same manner.
Hereinafter, the discard operation will be described. When the nozzle 6 to be used this time is, for example, the nozzle 6 of the nozzle number 2, FIG.
When the “unapplied time” reaches the set unapplied time as shown in 0, the number of discards set to “number of discards” is discarded before the main application operation. At this time, the XY table 4 is moved by the driving of the X-axis motor 2 and the Y-axis motor 3 so that the margin on the substrate 1 is located below the nozzle 6 and the air supplied through the air tube is used. With the adhesive in the syringe 7 being discharged from the nozzle 6,
If the nozzle 6 is lowered to declare the in-board discard data (W) in the discard data shown in FIG. 22, the first discard is performed at the position set in step 0006 indicated by the in-board discard step counter. A beating is performed. At this time, for example, if the “number of discards” is set to two, step 00
A second round is performed at 07. Nozzles 6 of other nozzle numbers are similarly discarded based on each condition.

Next, the application operation is performed sequentially, and the operation of recognizing the application diameter of the nozzle 6 will be described below. When the main coating operation is performed based on each step, and the nozzle 6 to be used next is, for example, the nozzle 6 of the nozzle number 1, the “real coating number” reaches the set actual coating number as shown in FIG. Then, the application diameter is recognized as described above. At this time, since “Yes” is set to “Dispatch operation” in the upper left of the screen, the dispensing operation is performed before the main dispensing operation in FIG.
If the discrimination data (R) is declared after the discarding operation and the in-board recognition data (R) is declared after this discarding operation, the in-board test hitting step counter (not shown) is used as described above. The adhesive is test-punched at the X and Y coordinate positions of the blank area on the substrate 1 set in step 0012 indicated by. Camera 1
Recognize with 0.

The XY table 4 is positioned so that the camera 10 is positioned above the margin of the substrate 1 on which the adhesive has been tested.
To move. Then, the camera 10 recognizes the test-struck adhesive. As described above, the calculation device (not shown) in the CPU 17 calculates the diameter of the adhesive based on the imaging result. This is stored in the RAM 15 by a comparator (not shown).
Is compared with the setting data (including the allowable range) stored therein, and it is determined whether or not the diameter is within the allowable range. If it is determined that the value falls within the allowable range, the operation returns to the main application operation. If it is determined that the value is not within the allowable range, the CPU 17
Adjusts the ejection amount by correcting the ejection time in consideration of the deviation from the allowable range during the main application operation, and applies the adhesive. When the nozzle 6 to be used this time is, for example, the nozzle 6 of the nozzle number 4, since the application diameter recognition operation condition is “all conditions” as shown in FIG.
When any one of the “actual application time” and the “substrate number” satisfies the condition, the application diameter is recognized. At this time, since the “disposal operation” is set to “not performed”, a test strike is performed on the blank portion of the substrate position without performing the discard operation before the main coating operation, and the adhesive of the test strike is used. The application diameter is recognized, and the main application operation is continued based on the recognition result as described above. In addition, as a result of recognition of the coating diameter, it is determined that the coating diameter is not within the allowable range, and the ejection amount is corrected during the main coating operation. The operation may be shifted to the application operation. That is, the trial hitting may be repeated. Further, in order to adjust the application diameter, the discharge pressure may be adjusted, or both the discharge time and the discharge pressure may be adjusted. Hereinafter, the application diameter of the nozzles 6 of other nozzle numbers is similarly recognized based on each condition.

The temperature control constant is selected not only at the time of starting the apparatus of the present embodiment but also at the time of energizing the apparatus, the application diameter recognizing operation shown in FIGS. The number of times, the time, the number of substrates to be processed and when all of these conditions are reached, set to a certain condition, and if it is outside of the previous environmental temperature range, it is adapted to the new environmental temperature range The temperature may be adjusted again using the temperature adjustment constant. Further, the temperature is constantly monitored by the sensor 30, and when the temperature is out of the environmental temperature range up to now, the apparatus is stopped when the coating on the substrate 1 that is performing the coating operation is completed, and the temperature control constant is replaced. Then, the coating operation on the new substrate 1 is started. Alternatively, the apparatus may be stopped in the middle of the substrate 1 and the temperature adjustment constant may be replaced again, and then the application of the substrate 1 from the next application position may be restarted.

Further, when changing the conveyor width of the conveyor, for example, by changing the model, the environmental temperature may be measured by the sensor 30 and the temperature control constant may be replaced.
Further, the present invention has been filed by the present applicant in Japanese Patent Application No. 5-28.
For example, as described in the specification attached to No. 2508, a coating having a function of not energizing or stopping energizing a heater corresponding to a nozzle that is not used (not used for a certain period of time) among a plurality of nozzles. When applied to the device, when the heater is energized or re-energized, the ambient temperature is measured, the temperature is adjusted with a desired temperature adjustment constant, the nozzle temperature is properly controlled, and the viscosity of the adhesive is adjusted properly. In order to stabilize the coating operation.

If the set temperature of the nozzle 6 is lower than the ambient temperature at that time, the temperature control becomes unstable, so the room temperature is adjusted by an air compressor or the like. Further, it is necessary to lower the current temperature of the nozzle 6 before heating by the heater 28 from the set temperature by cooling the nozzle 6.

[0050]

As described above, according to the present invention, when the apparatus is started, a desired temperature control constant is selected according to the environmental temperature around the coating apparatus measured when a certain set condition is reached. The nozzle temperature can be easily controlled based on the temperature. Further, even if the environmental temperature changes, the temperature adjustment constant is automatically changed based on the environmental temperature measured at that time, so that the nozzle temperature can be stably maintained. Therefore, the temperature characteristics of the viscosity at the time of discharge of the coating material can be stably maintained, and the coating quality of the coating material can be stably maintained.

Further, it is possible to reduce the non-operation time of the apparatus due to inconsistency in temperature adjustment, and furthermore, it is possible to select automatic setting of a temperature adjustment (PID) constant suitable for the environmental temperature. Operations can be performed easily and reliably, and erroneous operations due to insufficient settings or setting errors can be prevented, thereby improving productivity.

[Brief description of the drawings]

FIG. 1 is a configuration circuit diagram of a coating apparatus.

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

FIG. 3 is a screen displayed via a touch panel switch.

FIG. 4 is a screen displayed via a touch panel switch.

FIG. 5 is a screen displayed via a touch panel switch.

FIG. 6 is a screen displayed via a touch panel switch.

FIG. 7 is a screen displayed via a touch panel switch.

FIG. 8 is a screen displayed via a touch panel switch.

FIG. 9 is a screen displayed via a touch panel switch.

FIG. 10 is a screen displayed via a touch panel switch.

FIG. 11 is a screen displayed via a touch panel switch.

FIG. 12 is a screen displayed via a touch panel switch.

FIG. 13 is a screen displayed via a touch panel switch.

FIG. 14 is a screen displayed via a touch panel switch.

FIG. 15 is a screen displayed via a touch panel switch.

FIG. 16 is a screen displayed via a touch panel switch.

FIG. 17 is a screen displayed via a touch panel switch.

FIG. 18 is a screen displayed via a touch panel switch.

FIG. 19 is a screen displayed via a touch panel switch.

FIG. 20 is a screen displayed via a touch panel switch.

FIG. 21 is a screen displayed via a touch panel switch.

FIG. 22 is a screen displayed via a touch panel switch.

[Explanation of symbols]

 Reference Signs List 1 printed circuit board 4 XY table 5 coating unit 6 coating nozzle 15 RAM 16 ROM 17 CPU 24 touch panel switch 27 temperature controller 28 heater 30 temperature sensor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-112638 (JP, A) JP-A-3-94860 (JP, A) JP-A-5-77035 (JP, A) JP-A-4- 76702 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05K 3/34 B05C 5/00 B05C 11/00

Claims (4)

(57) [Claims] 1. A coating apparatus for applying a coating agent onto a printed circuit board mounted on a work table through a coating nozzle, comprising: a temperature measuring device for measuring an environmental temperature near the coating nozzle; A heating device for heating; I. And a temperature controller adapted to control various environmental temperatures corresponding to a set temperature of the nozzle.
I. D) a storage device for storing constant data, and temperature adjustment using the temperature control (PID) constant data stored in the storage device in the temperature adjustment device based on the environmental temperature measured by the temperature measurement device. A coating device, comprising: a control device for performing an operation. 2. A coating apparatus for applying a coating agent via a coating nozzle to a printed circuit board mounted on a work table, comprising: a temperature measuring device for measuring an environmental temperature near the coating nozzle; A heating device for heating; I. And a temperature controller adapted to control various environmental temperatures corresponding to a set temperature of the nozzle.
I. D) a storage device for storing constant data, and a temperature controller (PI.) Stored in the storage device in the temperature control device based on the environmental temperature at the start of heating by the heating device measured by the temperature measurement device. D) a coating device, comprising: a control device for performing a temperature adjusting operation with constant data. 3. A coating apparatus for applying a coating agent to a printed circuit board mounted on a work table via a coating nozzle, comprising: a temperature measuring device for measuring an environmental temperature near the coating nozzle; A heating device for heating; I. And a temperature controller adapted to control various environmental temperatures corresponding to a set temperature of the nozzle.
I. D) A storage device for storing constant data, and a temperature controller (PID) adapted to measure an environmental temperature by the temperature measuring device when a certain condition is reached, and to match the environmental temperature stored in the storage device. A) a selection device for selecting constant data;
The coating apparatus, further comprising a control device for performing a temperature adjustment operation based on the temperature control (PID) constant data selected by the selection device. 4. A temperature measuring device for measuring an environmental temperature in the vicinity of the application nozzle by applying an application agent to a printed circuit board mounted on a work table through an application nozzle, and a heating device for heating the nozzle. Device and the heating device. I. D
A temperature control device for controlling, a storage device for storing temperature control (PID) constant data suitable for various environmental temperature ranges corresponding to a certain set temperature of the nozzle, and an environment constantly measured by the temperature measurement device If the temperature is currently being used (P.
I. D) Selection for selecting temperature control (PID) constant data that fits the environmental temperature range stored in the storage device into which the measured environmental temperature enters when the temperature deviates from the environmental temperature range of the constant data. A coating apparatus, comprising: an apparatus; and a control device for performing a temperature adjustment operation with the new temperature control (PID) constant data selected by the selection device in the temperature adjustment device.