JP2517476B2 - Coating device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a coating device for coating a coating material in a syringe using a nozzle to fix a chip-shaped electronic component on a printed circuit board.

(B) Conventional Technology As a coating apparatus of this type, there is one disclosed in JP-A-64-57793.

This is to detect the remaining amount of adhesive in the tank and notify the operator when the remaining amount reaches a predetermined amount, and then to enable operation for a predetermined number of times of application or for a predetermined application operation operating time, during which the adhesive is set by the operator. Without replenishment, the equipment was stopped.

Therefore, there is a large reliance on the worker. In addition, workability was poor due to the stop of the device.

(C) Problems to be Solved by the Invention Therefore, it is necessary to improve production management and work efficiency.

(D) Means for Solving the Problems Therefore, in the present invention, in the coating device for coating the coating agent in each syringe by using each nozzle to fix the chip-shaped electronic component on the printed circuit board, the nozzle used Management device that manages the remaining amount of the coating agent in the syringe, and a first coating operation that continues the coating operation with another nozzle based on the management content that the remaining amount has reached a predetermined amount by the management device. A storage device storing a program and a second coating operation program for stopping the coating work, a selection device for selecting the program stored in the storage device, and a coating work according to the program selected by the selection device. And a control device.

(E) Action Based on the above configuration, the control device replaces the nozzle currently in use based on the management content that the remaining amount of the coating agent in the syringe of the nozzle currently in use has reached a predetermined amount by the management device. The coating operation is continued with the nozzle designated according to the first coating operation program stored in the storage device.

Further, the control device stops the coating work according to the second coating operation program stored in the storage device based on the management content.

(F) Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

(1) is a printed circuit board on which an adhesive as a coating agent is applied in order to mount a chip component (not shown), on a Y table (3) which is driven by a Y table motor (2) and moves in the Y direction. It is placed on. (4) X which is driven by the X table motor (5) and moves in the X direction.
In the table, the Y table (3) moves in the Y direction on the X table (4). Therefore, the printed circuit board (1) can move in the XY direction.

(6) is an adhesive application unit for applying an adhesive to the printed board (1), and applies an adhesive to the printed board (1). In the present embodiment, four are provided. The adhesive application unit (6) includes a roller receiver (7) and a roller (8).
And is supported by a cam lever (9). Reference numeral (11) is a cam whose diameter of an arc changes for each rotation angle, and holds the cam lever (9) via a cam follower (12) provided in the cam lever (9).

(13) is a nozzle vertical drive unit such as a motor for rotating the cam (11), and is provided at the other end of the roller (8) of the cam lever (9) when the cam (11) is rotated by the drive unit (13). The cam lever (9) swings up and down with the fulcrum shaft (14) as a fulcrum. The adhesive application unit (6) moves up and down by the vertical swing of the cam lever (9). The adhesive application unit (6) will be described with reference to FIG.

(16) is a nozzle for discharging an adhesive and applying the adhesive onto the printed circuit board (1), and a nozzle (16) having a different discharge diameter is prepared for each adhesive applying unit (6). (17) is a syringe connected above the nozzle (16) and storing the adhesive. Reference numeral (18) is an air tube for feeding compressed air for discharging the adhesive from the nozzle (16). The nozzle (16) is rotated by a rotation mechanism (not shown).

Reference numeral (20) is a magnetic proximity sensor for detecting that the amount of adhesive in each syringe (17) has reached a certain amount and notifying that the remaining amount is running out, and is provided in each syringe (17). The position of each float (21) in which the magnet is embedded is detected to detect the remaining amount of adhesive.

(22) is an operation unit having a numeric keypad (23) and a cursor key (24), and a start key (25) for starting a coating operation.
Also, a screen selection key (27) for the monitor TV (26) is provided.

Reference numeral (28) is a RAM as a storage device for storing NC data relating to the coating position, the type of nozzle (16) used, and the like according to the coating order as shown in FIG.

(29) stores a first coating operation program for continuing the coating operation with another nozzle (16) when the remaining amount reaches a predetermined amount, and a second coating operation program for stopping the coating operation in the above case It is a ROM as a storage device.

(30) is a CPU as a control device for performing general control of the coating device.

(31) is an interface, a group of proximity sensors (20),
It is connected to a warning light (32), a coating end light (33), etc.

Next, an operation of setting the number of times of applying the adhesive so that the adhesive applying operation can be performed a predetermined number of times after the notification of the remaining amount of the adhesive based on the detection of the proximity sensor (20) is given.

First, when the screen selection key (27) is pressed, a screen as shown in FIG. 4 showing the data setting mode is displayed on the monitor television (26). Then use the cursor keys (24) to move the cursor (not shown) to "EMPTY STOP FUNCTIO
N "(Automatic stop function after the remaining amount is announced) function" None "
To the position of “0”, and press the number key of “1” (2
3) Press to set the function to "Yes". The set data is controlled by the CPU (30) to be written in a predetermined area of the RAM (28). Next, press any cursor key (2
In order to set the number of times of application of any nozzle (16) by 4), it can be set by any number key (23) after designating that nozzle. According to FIG. 5, each nozzle is set so that the coating operation can be performed 1,234 times.

When the proximity sensor (20) detects that the remaining amount of the adhesive in each of the syringes (17) has decreased to a predetermined amount, the notice lamp (32) causes the CPU (30) to interface with the interface (31).
It is controlled to light via. Further, the coating end lamp (33) is controlled so as to turn on when the coating is performed a set number of times.

In this embodiment, each proximity sensor (20) can be set to be applied any number of times after the remaining amount of the adhesive in the syringe (17) is reduced to a predetermined amount.
The operating time of the coating operation may be set arbitrarily. At that time, the unit of the number set by the ten keys (23) is seconds.

Then, the CPU (30) subtracts one from the set number for each application operation from the time when the notice signal from the proximity sensor (20) is input via the interface (31), and the content after the subtraction is stored in the RAM ( The data is stored in a predetermined area of 28) and the monitor television (26) is operated by operating the selection key (27) to display the contents after the subtraction on the screen as shown in FIG. The content after the subtraction is "0"
In this case, that is, when the coating operation is performed the set number of times, the coating end lamp (32) is turned on.

Next, the setting operation of a function (hereinafter referred to as an alternate function) in which the adhesive in the syringe (17) of the predetermined nozzle (16) is used up and the subsequent application is continued with another nozzle (16) will be described. To do.

As described above, press the screen selection key (27) to
Set the data setting mode as shown in the figure to the monitor TV (2
Display in 6).

First, the cursor is moved to the position of "0" indicating the function "absent" of "ALTERNATE FUNCTION", and the ten key (23) of "1" is pressed to set the function "present".

Next, in "ALTN MODE" (alternate mode), a condition for performing alternation for the nozzle (16) is set. That is, "0" is set if there is no alternate for the nozzle (16), and "1" is set if alternate is performed when the proximity sensor (20) gives a notice of remaining amount. Sensors (20)
If the number of coatings after the detection reaches the set number (set to 1,234), "2" is set if the alternation is performed.

In "NEXT ALTN" (Next nozzle designation by alternate), if the nozzle (16) has an alternate function, other nozzles (16) can be used instead of the own nozzle (16) to perform coating work. Nozzle (16) number is set.

Here, it is assumed that various settings are made as shown in FIG. That is, the nozzle (16) of NOZZLE1 does not perform alternation ("ALTN MODE" is set to "0". Therefore, "NEXT ALTN" has no nozzle designation "-"). The nozzle (16) of NOZZLE2 will perform alternation (when "ALTN MODE" is set to "1") when it is announced that the remaining amount will run out, and will perform the coating work instead.
NOZZLE3 nozzle (16) is specified ("NEXT ALT
N is set to "3". ). The NOZZLE3 nozzle (16) performs alternation ("ALTN MODE" is set to "2") when the set number of times has elapsed after sensor detection, and the NOZZLE4 nozzle (16) is designated ("NEXT"). It is set to "4" in "ALTN".) And NOZZLE4 does not perform alternation. In addition, "CONDI
In "TION" (state mode), "-" is displayed when there is no alternate function, "*" is displayed when alternate has already been performed, and nothing is displayed in other conditions. The nozzles (16) of NOZZLE4 and 3 have the same discharge diameter, and the nozzle (16) of NOZZLE4 is
It shall be provided as a spare. Also, NOZZLE2
Although the discharge diameters of the nozzles (16) of Nos. 3 and 3 are different, the application amount can be made the same by controlling the discharge time and the pressure applied to the syringe (17).

 The operation will be described below.

First, when the start key (25) of the operation section (22) is pressed, the CPU (30) starts the coating operation based on the NC data regarding the coating operation shown in FIG.

"N1" in the first step (M1) of the application sequence
When the nozzle (16) of (NOZZLE1) is selected and the X table motor (5) and the Y table motor (2) are rotated, the X table (4) and the Y table (3) are respectively in the X direction and the Y direction. And a predetermined portion of the printed circuit board (1) placed on the Y table (3) is positioned below the nozzle (16). That is, in step (M1), the coordinates (X1, Y
It is the position of 1).

Next, when the nozzle vertical drive unit (13) such as a motor is rotated, the cam (11) is rotated, and the cam lever (9) positioned above via the cam follower (12) is rotated by the fulcrum shaft ( 14)
Is swung downward about the fulcrum. When the cam lever (9) is lowered, the desired adhesive application unit (6) is lowered via the roller (8) and the roller receiver (7). At this time, the lowering of the other adhesive application unit (6) is regulated by a control device (not shown) so as not to be lowered.

Nozzle (16) due to lowering of adhesive application unit (6)
And the tip of the nozzle (16) comes into contact with the printed circuit board (1). Here, the adhesive discharged by the compressed air previously sent from the air tube (18) is applied to the coordinates (X1, Y1) position on the printed circuit board (1).

When the cam (11) is further rotated by the nozzle up-and-down drive part (13), the cam lever (9) swings upward, the adhesive application unit (6) rises, and the nozzle (16) moves to the printed circuit board (1). ) Leave and rise.

Next, the X table (4) and the Y table (3) move to position the other part of the printed circuit board (1) below the nozzle (16), and perform the coating operation after step (M2). In this way, the coating operation on the printed circuit board (1) is continued.

The coating operation is performed as described above, and the alternate function will be described below.

First, since the nozzle (16) of NOZZLE1 is set to "0" in "ALTN MODE", alternation is not performed, and the remaining amount of the adhesive in the syringe (17) of the nozzle (16) reaches a predetermined amount. When the proximity sensor (20) detects that the number has decreased, the CPU (30) that receives the notice signal via the interface (31) confirms that there is a remaining amount automatic stop function, and the notice light (32 ) Is controlled so that it lights up. At this time, the CPU (30) causes the monitor television (26) to display "*" on the line corresponding to the nozzle (16) as shown in FIG. A monitor television (26) notifies that the remaining amount has reached a predetermined amount.

And since there is still remaining capacity, the numeric keypad (23)
The application can be performed as many times as set by. At this time, as shown in FIG. 5, 1 is subtracted for each coating operation from the set number of 1,234 times of the coating nozzle (6). The contents after the subtraction are stored in the RAM (28),
It is displayed on the monitor television (26). When the dispensing operation is performed the set number of times after the notice, the CPU (30)
Prevents the so-called blanking by preventing the coating operation from being performed unless the syringe (17) is replenished with the adhesive, and lights the coating end lamp (33) to notify the user of the fact.

Of course, during this notice, the user can refill the syringe (17) with the adhesive and restore the initial state by key operation. That is, the user only needs to perform replenishment after receiving the notice and before the application operation is stopped.

Next, when the proximity sensor (20) detects that the remaining amount of the adhesive in the syringe (17) of the nozzle (16) of NOZZLE2 has decreased to a predetermined amount, the CPU (30) shows in FIG. ALT
Alternates because "1" is set in "N MODE". That is, the NOZZLE2 nozzle (1
When performing the coating operation with 6), the nozzle (16) of NOZZLE3 designated as "NEXT ALTN" is used for dispensing time and syringe (1
Change the pressure applied to 7) so that the application amount is the same as the nozzle (16) of NOZZLE2. At this time, "*" is displayed on the line of the nozzle (16) of NOZZLE2 of "CONDITION". This indicates that the nozzle (16) of the NOZZLE 2 was subjected to alternation.
In this case, the notice light (32) is not turned on. However,
When the nozzle (16) to be alternated to "NEXT ALTN" is not designated, the notice light (32) is turned on. Then, when the notice signal is received for the nozzle (16) of the alternate NOZZLE 3 this time, the CPU (30) turns on the notice light (32) and performs a predetermined work based on the remaining amount exhaustion function.

Next, when a warning signal is issued to the nozzle (16) of NOZZLE3, the CPU (30) confirms what is set in "ALTN MODE", and in this case, performs alternation after the set number of times after sensor detection. Since "3" is set, the number of times (1,23) is set without turning on the warning light (32).
Continue to apply only 4 times. In this way, when the dispensing operation is performed the set number of times after the advance notice, the CPU (30) causes the NOZ
Perform the coating operation with the nozzle (16) of NOZZLE4 designated by "NEXT ALTN" instead of the nozzle (16) of ZLE3. At this time, the nozzle (1
If 6) is not specified, it will be abnormal and the device will be stopped.

Also, the nozzle (16) of NOZZLE 4 does not perform alternation.

In this embodiment, NOZZLE4 is used as the spare nozzle (16), but a special spare nozzle (16) is used.
No four nozzles (16) are used to replace one of the nozzles (16) with another nozzle (1
It may be changed to 6) to continue the coating work.

Also, the proximity sensor (20) is used for advance notice, but the present invention is not limited to this.
Syringe (17) which measures operating time with timer
The remaining amount of the adhesive inside may be determined.

Further, the present invention is not limited to having the same nozzle diameter, but is effective for nozzles having different diameters. In this case, since the nozzle diameter is naturally different, the application amount may vary under the same conditions (for example, pressurizing time, pressurizing force, etc.).
Therefore, the conditions (2
It can be memorized in the form of a correspondence table in 8), and even if the nozzle (16) used is changed, the same coating amount can be obtained.

(G) Effect of the Invention As described above, according to the present invention, the production control is facilitated and the coating operation can be continuously performed. In addition, the application program can be selected, improving usability.

[Brief description of drawings]

1 and 2 are schematic circuit diagrams and perspective views of an electronic component automatic mounting apparatus of the present invention, FIG. 3 is a diagram showing NC data relating to a coating operation, and FIGS. 4 to 7 are screens of a monitor TV. FIG. (16) …… Nozzle, (17) …… Syringe, (20) …… Proximity sensor, (28) …… RAM, (30) …… CPU, (32) ……
Warning light.

Claims (1)

(57) [Claims] 1. A coating device for coating the coating agent in each syringe using each nozzle to fix a chip-shaped electronic component on a printed circuit board, wherein the remaining amount of the coating agent in the syringe of the nozzle used is measured. A management apparatus for managing, a first coating operation program for continuing the coating operation by another nozzle based on the management content that the remaining amount has reached a predetermined amount by the management apparatus, and a second coating operation program for stopping the coating operation. A storage device that stores a coating operation program, a selection device that selects the program stored in the storage device, and a control device that performs a coating operation according to the program selected by the selection device are provided. Coating device.