JPH06112695A - Positioning equipment for board - Google Patents

Abstract

PURPOSE:To detect completion of positioning of a board on the basis of the motion of a board carrying part. CONSTITUTION:Being driven by a pulse motor 103, a movable shoot so moves as to come into contact with and separate from a fixed shoot 88. At this time, a moving motion of a slide block 90 is detected by a board positioning sensor 101, and based on the result of the detection, CPU judges that the positioning in the board direction of a printed circuit board 1 is completed between the fixed shoot 88 and the movable shoot.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pair of fixed chutes and movable chutes for carrying substrates, which are provided at positions facing each other in the width direction of a printed circuit board, and a slide block provided on the movable chutes. The present invention relates to a substrate positioning device that includes a pressing unit that presses in the width direction via an elastic unit and that positions the substrate in the width direction.

[0002]

2. Description of the Related Art As this type of prior art, there is one disclosed in Japanese Patent Application Laid-Open No. 59-29493 filed by the present applicant. This is because the movable chute of the substrate transfer chute is divided into an upper chute and a lower chute, and the upper chute is biased from the side by a biasing force of a spring and slid in the fixed chute direction to support the substrate on the substrate chute. When this is done, the lower chute presses the substrate against the fixed chute side for positioning in the substrate width direction. In this apparatus, the present applicant considered that the substrates transported from the upstream apparatus are sequentially transported onto the substrate transport chute by using a conveyor so that the substrates are sequentially fed in order to improve productivity. In this case, since the substrate is conveyed by the conveyor, the end face of the substrate is caught on the substrate conveying surface and cannot be conveyed. Therefore, ru. Therefore, it is desired to detect the completion of the positioning of the substrate based on this operation.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to detect the completion of the positioning of the substrate based on the operation of the substrate transfer section.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a pair of fixed chutes and movable chutes for carrying substrates, which are provided at positions facing each other in the width direction of a printed circuit board, and a slide block provided on the movable chutes. A drive motor for moving the movable chute to and away from a fixed chute in a board positioning device for positioning the board in the width direction, the pressing motor pressing the board in the width direction of the board via elastic means. And a detection device for detecting the movement operation of a slide block provided on a movable chute that is moved by the drive of the drive motor, and a substrate width direction of the substrate between the fixed chute and the movable chute based on the detection result of the detection device. And a determining device for determining that the positioning of the above is completed.

[0005]

With the above structure, the movable chute is moved toward and away from the fixed chute by driving the drive motor. At this time, the movement device in which the slide block on the movable chute abuts against the substrate and is pushed back is detected by the detection device, and based on the detection result, the determination device completes the positioning of the substrate in the substrate direction between the fixed chute and the movable chute. To judge.

[0006]

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

FIG. 15 (1) shows a printed circuit board to which an adhesive as a coating agent is applied because a chip component (not shown) is mounted, and an X-axis motor (2) and a Y-axis motor (3).
It is placed on the XY table (4) which is moved in XY.

(5) is an adhesive application unit for applying an adhesive to the substrate (1), (6) is a nozzle for ejecting the adhesive and applying the adhesive onto the substrate (1), (7) ) Is a syringe which is connected above the nozzle (6) and stores the adhesive, and compressed air supplied from an air supply source (not shown) is fed into the syringe and the adhesive is discharged from the discharge part (6A) of the nozzle (6). Is discharged.

Hereinafter, the coating unit (5) will be described in detail with reference to FIG.

Reference numerals (8) and (9) denote a rotor gear serving as a first holding portion for holding the nozzle (6) and a nozzle holder serving as a second holding portion, which are inserted into the insertion holes (10) and (11), respectively. Is inserted. The rotor gear (8) and the nozzle holder (9) are provided at a predetermined interval with respect to the vertical position, and a pair of recesses (12) provided in the lower portion of the rotor gear (8) and a pair provided in the upper portion of the nozzle holder (9). Recesses (13)
A compression spring (14) of a buffer mechanism is interposed over the bolt (15), and a bolt (15) is inserted from below through the recess of the nozzle holder (9) so as to penetrate the spring (14). When the screw part of the rotor gear (8) is fitted into the rotor gear (8), the rotor gear (8) and the nozzle holder (9) are urged so as to separate from each other, but they are attached in a regulated state. (16) is a plain bearing. On the rotor gear (8) side, the flange portion (17) of the nozzle (6) is inserted into the insertion hole (10).
The lower limit position of the nozzle (6) is set by inserting the nozzle (6) until it comes into contact with the bottom surface of the nozzle. At this time, the below-mentioned positioning surface (74) of the flange portion (17) is the protrusion (8A).
Positioned by abutting against.

The fixing mechanism of the nozzle (6) to the nozzle holder (9) will be described below with reference to FIG.

Reference numeral (19) is a nozzle fixing pin that fits into a groove (18) formed over the entire circumference of the peripheral side surface of the nozzle (6).

Reference numeral (20) is an insertion hole formed between the nozzle holder (9) and a spring stopper (21) fixed to the side surface of the holder (9), and is a stopper flange () of the tip portion of the pin (19). 22) is inserted until it abuts one end of the plain bearing (23).

Reference numeral (24) is a compression spring in which one end of the spring stopper (21) and a spring flange (22) are engaged with the pin (19) in a penetrating manner.

Reference numeral (25) is a knob with a knurl.

(30) is a discharge part (6A) of the nozzle (6)
It is a stopper pin that abuts on the substrate (1) to apply a predetermined gap between the nozzle (6) and the substrate (1) when applying the adhesive discharged to the tip to the substrate (1).

(34) is a nozzle up-and-down mechanism for moving the nozzle (6) up and down. Referring to FIG. 2, (35)
Is a fixed base (3) via a ball screw (37) that is rotated by the drive of a vertical motor (36) with adjustable speed.
The upper and lower blocks are vertically moved by being guided by a linear guide (not shown) fixed to 8). (39) is a ball screw nut.

Reference numeral (27) is a nozzle upper and lower arm (27) which is loosely inserted into the groove (40) formed in the upper and lower blocks (35), respectively, and is moved by the vertical movement of the upper and lower blocks (35). The linear guide (61) attached to the fixed base (38) (see FIG. 3) guides it to move up and down. The arm (27) has a bearing (2
Since it is fixed to the rotor gear (8) via 8), the nozzle (6) is moved up and down by the vertical movement of the arm (27). The lowering operation of the nozzle (6) is detected by each sensor (not shown) corresponding to each nozzle (6). Further, the gear portion (2
The nozzle (6) is rotated by meshing with a gear (not shown) rotated by a rotation mechanism (not shown) in 9).

Reference numeral (41) is a slide claw receiver provided upright on the upper and lower blocks (35).

(42) is the nozzle upper and lower arm (27)
A spring stopper (44) fixed to the recess (43) of one of the slide claws (41) and the arm (27) by an H-shaped slide claw attached to the upper part so as to be slidable in the direction of the slide claw receiver (41). Is urged toward the slide claw receiver (41) by a compression spring (45) interposed between the taper portion (46) and the slide claw receiver (41).
And the tapered portion (47) of the slide claw (42) are engaged. Further, due to this engagement, the flange portion (48) of the arm (27) is brought into contact with the convex portion (49) formed on the upper portion of the groove (40) of the upper and lower blocks (35), so that the arm (2
7) is vertically moved by the engagement of the slide claw (42) and the slide claw receiver (41) through the above-mentioned taper parts (46) and (47) and the abutment of the flange part (48) and the convex part (49). The block (35) is so-called integrated with the block (35), and moves up and down together with the up and down block (35). With these,
It constitutes a locking mechanism.

The releasing mechanism (52) for releasing the fixing between the arm (27) and the upper and lower blocks (35) will be described below.

Reference numeral (53) is an air cylinder fixed to the base of an applicator (not shown), and a claw return block (55) is formed at the tip of the rod (54). When the pawl return block (55) is moved forward by driving the air cylinder (53) and the contact portion (56) of the block (55) is in contact with the contact portion (57) of the slide pawl (42). Spring (4
5) By pushing back the slide claw (42) against the urging force of the slide claw (42), the engagement between the slide claw (42) and the slide claw receiver (41) via the taper parts (46) and (47) and the flange part ( Since the contact between the protrusion (48) and the protrusion (49) is released, even if the upper and lower blocks (35) are moved up and down, the arm (2
7) does not move up and down because it is free from the upper and lower blocks (35). The forward and backward movements of the air cylinder (53) are detected by sensors (58) and (59) shown in FIG. 20, respectively, and the forward and backward movement time-outs are timed by the timers corresponding to the respective cylinders (53). It

(32) is the adhesive application unit (5)
With a CCD camera fixed to the upper and lower blocks (35) so as to be located at the center of the four nozzles (6) juxtaposed with each other, the adhesive applied to the substrate (1) or the adhesive applied to the substrate (1) was applied. A board recognition mark (not shown) is recognized.

The structure of the nozzle (6) will be described below with reference to FIGS. 9 to 11.

Reference numeral (63) is a nozzle body, and a fitting groove (66) into which the fitting portion (65) of the nozzle tip portion (64) is fitted is formed in the lower portion, and the flat surface of the flange portion (67). Is inserted until it contacts the lower part of the nozzle body (63). When the fitting portion (65) and the fitting groove (66) are fitted, a positioning surface (68) formed on the flange portion (67) shown in FIG. 11 is projected from the lower portion of the nozzle body (63). Positioning surface (70) formed inside the protruding piece (69)
The angular positioning is performed so that Thus, with the nozzle tip (64) fitted to the nozzle body (63), the cap nut (71) is inserted into the nozzle tip (64) through the insertion hole (72) of the cap nut (71). As shown in FIG. 3, the nut is fixed through the screw portion (73) formed on the side surface of the lower portion of the nozzle body (63) through the lower portion. Further, as shown in FIG. 10, the flange portion (17) of the nozzle body (363) is also provided with a positioning surface (74) serving as an angular positioning reference at the time of fitting.

Here, the nozzle (6) is a rotor gear (8).
And attached to the nozzle holder (9) in the following manner, which will be described with reference to FIGS. 6 to 8.

First, an operator inserts the nozzle (6) into the rotor gear (8) and the nozzle holder (9) as shown in FIG. 7 while holding the upper portion of the nozzle body (63). Then, as shown in FIG. 8, the tip of the nozzle fixing pin (19) slides on the side surface of the nozzle body (63), and the nozzle fixing pin (19) fits into the groove (18) as shown in FIG. It is further inserted until it gets stuck. At this time, the lower limit position of the nozzle (6) is set by inserting the flange portion (17) of the nozzle (6) until it comes into contact with the bottom surface portion of the insertion hole (10). Further, as shown in FIG. 3, the positioning surface (74) of the flange portion (17) is brought into contact with the protrusion (8A) for positioning. Further, when the adhesive in the syringe (7) is used up, the syringe (7) is replaced in the same manner. That is, while pulling the nozzle fixing pin (19), the nozzle (6) is lifted, pulled out from the rotor gear (8) and the nozzle holder (9), and the syringe cap (80) is rotated to rotate the syringe (7) and the syringe cap (80). After separating and, the syringe (7) containing the adhesive (the nozzle (6) is also fixed) is attached to the syringe cap (80), and the nozzle (6) is attached to the rotor gear (as described above). 8) and the nozzle holder (9).

The nozzle holder (9) also serves as a heater block, and as shown in FIG. 6, the heater (76) is used.
The nozzle holder (9) is fitted with the
The heat is transferred to the nozzle (6) through the nozzle (6), and the adhesive in the nozzle (6) is maintained at an appropriate temperature. Since the nozzle holder (9) is extended so as to cover the nozzle tip (64) and the nozzle tip (64) is inserted through the insertion hole (9A), only the nozzle body (63) is used. The heat is also transferred to the nozzle tip (64).

The air tube (7) shown in FIG.
The syringe cap (80) is a copper pipe for heat dissipation for preventing the temperature inside the syringe (7) from rising due to the air pressure supplied via 9) and the adhesive inside the syringe (7) from hardening. And the air tube (79).

Reference numeral (81) is a rubber seal ring that closes the fitting portion between the syringe cap (80) and the syringe (7) so that the air supplied into the syringe (7) does not leak.

The reference numeral (84) receives the substrate (1) conveyed from an upstream device (not shown) and the XY table (4).
And (85) is a discharge conveyor that discharges the substrate (1) on the table (4) for which the adhesive application has been completed to the downstream side device.

The substrate positioning mechanism which is a part of the structure of the XY table (4) will be described below with reference to FIGS.
Description will be made with reference to FIGS. 16 to 19.

(87A) and (87B) are supply conveyors (8
4) a pair of fixed blocks that constitute a board transfer section of an XY table (4) that guides while supporting both side edges of the board (1) transferred from a conveyor (not shown), as shown in FIG. One fixed block (87
A) is a linear guide (86) on the upper part of the fixed plate (88) having a U-shaped cross section, and the other fixed block (87B) is on the bottom part of the fixed plate (88) by a moving mechanism described later.
It is provided on the upper part of the movable plate (89) which is moved through. A part of the fixed block (87) on the movable plate (89) side is composed of a slide block (90). The slide block (90) has a long hole (9) formed in the slide block (90) as shown in FIG.
1) Pins (92) erected on the movable plate (89)
The compression spring (94) having one end abutted against the slide block (90) and the other end abutted against the inverted L-shaped mounting piece (93) provided on the side surface of the movable plate (89) in a state in which is inserted. Is movably attached to the movable plate (89) by being pressed against the fixed plate (88) side. The slide block (90) is prevented from coming off the pin (92) by a retaining member (not shown).

On the side surface of the slide block (90), a light shielding plate swinging fulcrum (96) erected on a fulcrum bearing (95) projecting from the side surface of the movable plate (89) is oscillated. A shading plate (97) is abuttable as much as possible. The light shield plate (97) has a compression spring receiver (102) provided at one end thereof so that the contact portion (98) is always in contact with the slide block (90).
It is biased by a compression spring (100) inserted in an insertion hole (99) formed in the side surface of 7).

Reference numeral (101) is a substrate positioning sensor composed of a transmissive photosensor, and the light projected from the light projecting portion in the state where the substrate (1) is not present on the XY table (4) is guided by the light shielding plate (97). The light is blocked so that it is not received by the light receiving section.

Reference numeral (103) is a pulse motor of a moving mechanism for moving the movable plate (89).
The ball screw (105) supported by the fixed plate (88) via the bearing (104) is rotated by the driving of (3), and the movable plate (88) to which the slider portion (106) is fixed is moved to the linear guide (86). And is horizontally moved in the width direction of the substrate.

(107) presses a large number of backup pins (108) standing on the back surface of the substrate (1) supported by the fixed block (87), and the substrate (1) is warped, for example. Is a backup base that is also supported horizontally, and is vertically moved by an up-and-down mechanism (not shown) provided on the bottom surface of the fixed plate (88). Further, the base (107) is also provided with a positioning pin (not shown) for temporary positioning which is inserted into a positioning hole (not shown) formed in the substrate (1).

Reference numeral (110) is a substrate detection sensor for detecting that the substrate (1) has passed, and the light projected from the light projecting section located above the substrate transport level is reflected by the substrate (1) and reflected. The light is detected by being received by the light receiving unit.

Reference numeral (111) is a substrate stopper which comes into contact with the rear end of the substrate (1) and regulates the returning operation of the substrate (1), which is moved up and down by an up-down mechanism (not shown).

Reference numeral (115) in FIG. 20 is a cut-off timer provided for each nozzle (6) to count the unused time of each nozzle (6), and (116) corresponds to each nozzle (6). Is a use timer for measuring the use time of the nozzle (6).

The discarding is a coating operation performed for cleaning the nozzle (6) regardless of the main coating.

Reference numeral (117) is an adhesive agent C provided corresponding to each nozzle (6) and test-stripped by each nozzle (6).
The coating diameter recognized by the CD camera (32) is R described later.
It is a pass counter that is decremented by 1 each time it enters the set application range stored in the AM (131). Reference numeral (118) is a rejection counter that is provided corresponding to each nozzle (6) and decrements by 1 each time the coating diameter of the adhesive that is trial-stripped by each nozzle (6) falls outside the set coating range.

The trial shot is a coating operation that is performed independently of the main coating operation in order to recognize the coating diameter.

FIG. 20 (120) shows an operation unit for producing various data by operating each key, and a screen of a keyboard (121) for setting various data, a cursor instruction key (122), a ten key (123), and a CRT (124). Select key (12
5), an automatic key (126) for setting the coating device to the automatic operation mode, and a manual key (12) for setting the manual mode.
7), a start key (128), an operation key (129), and a stop key (130).

Reference numeral (131) is a RAM as a storage device for storing NC data (see FIG. 21) and coating condition data (see FIG. 22) relating to the coating operation.

Reference numeral (132) is a ROM as a storage device for storing a program relating to the coating operation.

Reference numeral (133) is a CPU as a control device for performing overall control of the coating device.

(134) is an interface.

Reference numeral (135) is a drive circuit, which is an X-axis motor (2), a Y-axis motor (3), a CCD camera (32), a vertical motor (36), an air cylinder (53), and a sensor (5).
8), (59), heater (76), substrate positioning sensor (101), pulse motor (103), substrate detection sensor (110), discard timer (115), use timer (1
16), pass counter (117), fail counter (1
18) etc. are connected.

The operation will be described below.

First, when the operation of the coating apparatus is started, as shown in FIG. 25, the XY table (4) is elevated to the substrate (1) transfer level (the height origin position detected by a sensor (not shown)). . At this time, the positioning mechanism is in an open state (the substrate transport unit is made wider than the substrate width so that the transported substrate (1) can enter).

Next, the substrate (1) is conveyed from the supply conveyor (84) onto the XY table (4) via the conveyor, and the passage of the substrate (1) is detected by the substrate detection sensor (110). Then, the conveyor supply conveyor (84)
Also, the driving of the conveyor is stopped and the substrate stopper (1
11) is lowered by the vertical movement mechanism. The stopper (11
After 1) descends, the conveyor is reversely driven and the rear end of the substrate (1) is regulated by the stopper (111), and the movement thereof is stopped. At this time, the substrate (1) is stopped by the stopper (11
A timer (not shown) is set to a time sufficient for contact with 1), and the reverse rotation drive of the conveyor is stopped after the timer times out. Further, the presence of the substrate (1) is detected by the substrate detection sensor (110).

The substrate stopper (111) is raised and XY
The substrate transfer section of the table (4) is lowered by the up-down mechanism. At this time, the substrate (1) is backed up by the backup pins (108) on the backup base (107), and the positioning pins enter the positioning holes to temporarily position the substrate (1). After the table (4) is lowered to a predetermined lower limit position, substrate positioning processing (main positioning) is performed. That is, the pulse motor (103)
Is driven for a specified number of pulses, and the ball screw (105) is rotated by this drive and guided by the linear guide (86) to move the movable plate (89) in the direction in which the space between the fixed blocks (87) is narrowed. At this time, the movable plate (89)
Although the fixed block (87) and the slide block (90) on the movable plate (89) are also moved by the movement of the substrate, the slide block (90) for supporting the substrate (1) is the substrate (1) as shown in FIG. ) Restricts its movement, so that only the fixed block (87) is moved from a certain position. 1 to 17, and further from FIG. 17 to FIG.
As shown in FIG. 9, the fixed block (87) continues to move with respect to the slide block (90) whose movement is restricted at a certain position, and the light blocking plate (97) abutting on the side surface of the slide block (90) during this period. Is rotated in the clockwise direction with the light shielding plate swinging fulcrum (96) as the fulcrum, and the light of the substrate positioning sensor (101), which has been shielded by the light shielding plate (97) as shown in FIG. By doing, the CPU
(133) determines that the positioning of the substrate (1) is completed, and the CPU (133) recognizes the substrate positioning mark attached to the substrate (1) by the CCD camera (32) and then starts the coating operation. .

When the sensor (101) detects that the positioning cannot be performed (the board is not detected), the CPU (133) judges that the positioning is abnormal and the motor (103) is reversed. Drive to open the positioning mechanism.

At the start of operation, the non-use time shown in the time (TIME) of the cut-off data (WASTE DISPENSE DATA) shown in FIG. 23 which is normally set in the cut-off timer (115) of each nozzle (6) is timed up. Since it has not been applied, the coating work is started as it is.

The coating work is performed based on the NC data relating to the coating operation shown in FIG. That is, step 00
In 01, a board (1) indicated by X coordinate data and Y coordinate data
The adhesive is applied to the upper coordinate position (X1, Y1) under the application conditions indicated by the application condition data shown in FIG. That is, D (coating condition data number) of the NC data in FIG. 21 is 001.
And the nozzle number (NOZZLE) 2, the gauge (GAUGE) 1, and the ejection time (TIME) T1 which are set to the corresponding 001 of the coating condition data of FIG. Then, the compressed air from the supply source is sent to the syringe (7) through the air tube (79) for a time T1 to discharge the adhesive with the pressure of the gauge 1 to discharge a predetermined amount of the adhesive from the nozzle (6). Apply on the substrate (1). Therefore, the nozzle (6) with the nozzle number 2 (the second nozzle (6) from the left in FIG. 2) is designated based on the coating condition data shown in FIG. 22, and the coating operation is started via the nozzle (6). To do. The coating operation will be described with reference to FIG. In FIG. 2, only the nozzle (6) (second from the left) to be used can be moved up and down, and the other nozzles (6) (only the leftmost nozzle is shown) are not moved up and down. Shows. That is, the slide claw (42) is moved toward the slide claw receiver (41) by the urging force of the compression spring (45), and the slide claw receiver (41) is moved.
The slide claw (42) and the slide claw receiver (41) are engaged with each other via the taper part (46) of the slide claw (42) and the taper part (47) of the slide claw (42). As a result, the flange portion (48) of the nozzle upper and lower arm (27) is moved to the upper and lower blocks (3
The arm (27) is brought into contact with the convex portion (49) formed on the upper portion of the groove (40) of FIG.
6), a shape in which the slide claw (42) and the slide claw receiver (41) are engaged with each other via the (47) and the flange portion (48) and the convex portion (49) are brought into contact with each other so as to project to the upper and lower blocks (35). So-called integrated. Therefore, as the upper and lower blocks (35) are moved downward by the rotation of the ball screw (37) driven by the vertical motor (36), they are guided downward by the linear guide (61) shown in FIG. Then, as shown in FIG. 4, the stopper pin (30) of the nozzle tip portion (64) contacts the substrate (1), and as shown in FIG. 5, the substrate (1) is coated with the adhesive while being further pressed. It should be noted that during the above-mentioned pushing operation, the compression spring (14) has a sufficient force to apply the adhesive, and yet overload (the tip of the stopper pin (30) is bent, the substrate (1) is broken, etc.). The nozzle (6) floats up while sliding on the inner surface of the rotor gear (8) so as not to be covered. The lowering of the nozzle (6) is detected by the sensor, and when the lowering of the nozzle (6) is not detected by the sensor, the CPU (133) stops the coating device. Further, the device may be stopped and the operator may be notified by a not-shown notification device.

As for the other nozzles (6) not used, the lock mechanism releases the fixation of the nozzle (6) and the upper and lower blocks (35) by the release mechanism (52). The description will be given based on the first nozzle (6) from the left. The first air cylinder (53) from the left is pushed out (the timer is timed at the same time), and the pawl return block (55) advances through the rod (54), and the abutting portion ( 56) and the abutting portion (57) of the slide claw (42) are brought into contact with each other, and further pushing operation causes the slide claw (42) to resist the urging force of the compression spring (45) and slide claw receiver (4).
1) Moved away from the slide claw holder (4
1) The engagement with the air cylinder (53) is released (the pushing operation by the air cylinder (53) is detected by the sensor (58), and C
The PU (133) stops the timer after receiving the detection signal. ). Thereby, the flange portion (48) of the nozzle upper and lower arm (27) and the upper and lower blocks (35).
The abutment with the convex portion (49) formed on the upper part of the groove (40) is released, so that the arm (27) and the upper and lower blocks (3).
The integration with 5) is also canceled. Therefore, the vertical motor (3
Even if the upper and lower blocks (35) are lowered by the rotation of the ball screw (37) driven by 6), the nozzle upper and lower arms (27) are not lowered and the nozzles (6) are not lowered.
In addition, the air cylinder (5
When the pushing operation of 3) is not completed, or when the sensor detects that the unused nozzle (6) is lowered, the coating device is stopped. Further, the device may be stopped and the operator may be notified by a not-illustrated notification device.

Next, in step 0002, the inside of the syringe (7) is pressurized at the coordinate position (X2, Y2) on the substrate (1) with the pressure of gauge 2 to the nozzle (6) of nozzle number 1 for the discharge time T2. Then, the discharged adhesive is applied.
At this time, the leftmost nozzle (6) and the upper and lower blocks (3
5) and are fixed by the lock mechanism, and the above-mentioned step 00
The fixation of the nozzle (6) used in 01 and the upper and lower blocks (35) is released. That is, when the upper and lower blocks (35) are at the height origin position detected by the sensor as shown in FIG. 28, the leftmost air cylinder (53) is retracted (at the same time, the timer is timed). Rod ( Since the claw return block (55) retracts via 54) and the contact part (56) of the block (55) and the contact part (57) of the slide claw (42) are released, Slide claw (4
2) is moved to the slide claw receiver (41) side by the urging force of the compression spring (45), and the taper part (46) of the slide claw receiver (41) and the taper part (47) of the slide claw (42).
Slide claw (42) and slide claw receiver (41)
Are engaged with each other (the retracting operation by the air cylinder (53) is detected by the sensor (59), and the CPU (13
3) stops the timer after receiving the detection signal. ). As a result, the flange portion (48) of the nozzle up-and-down arm (27) is brought into contact with the convex portion (49) formed above the groove (40) of the up-and-down block (35), so that the arm (27) is moved to the above-mentioned position. The upper and lower blocks (35) due to the engagement of the slide claw (42) and the slide claw receiver (41) through the tapered portions (46) and (47) and the contact between the flange portion (48) and the convex portion (49). The ball screw (3
As the upper and lower blocks (35) are moved downward by the rotation of (7), the nozzle (6) is lowered through the arm (27) to apply the adhesive on the substrate (1) (this lowering). Motion is detected by the sensor.). The device is stopped when the pulling-in operation of the air cylinder (53) is not completed within a predetermined time by the timer and when the sensor does not detect the lowering of the nozzle (6). Further, the device may be stopped and the operator may be notified by a not-illustrated notification device. Then, the above-mentioned step 00
In order to fix the nozzle (6) used in No. 01 and the upper and lower blocks (35) by the lock mechanism, the second air cylinder (53) from the left is pushed out and operated in the same manner as described in step 0001 above (at the same time, the timer is timed. The pawl return block (55) advances through the rod (54), and the abutting portion (56) of the block (55) and the slide pawl (4).
The slide claw (42) is moved in a direction away from the slide claw receiver (41) against the urging force of the compression spring (45) by further contact with the contact portion (57) of (2) and further pushing operation. The engagement with the slide claw receiver (41) is released (the pushing operation by the air cylinder (53) is detected by the sensor (5
8), the CPU (133) stops the timer after receiving the detection signal. ), The convex portion (4) formed on the flange portion (48) of the nozzle upper and lower arm (27) and the groove (40) of the upper and lower blocks (35).
Since the contact with the nozzle (6) is also released, the integration of the arm (27) and the upper and lower blocks (35) is released, and the nozzle (6) is released.
Does not descend. When the pushing operation of the air cylinder (53) is not completed within a predetermined time by the timer, or when the sensor detects that the unused nozzle (6) is lowered, the apparatus is stopped. Further, the device may be stopped and the operator may be notified by a not-illustrated notification device.

When the substrate (1) drops due to some cause (such as cracking of the substrate (1) or vibration) during the automatic operation, it is detected by the substrate positioning sensor (101). That is, the slide block (9) whose forward movement was restricted by the substrate (1) until then by the dropping of the substrate (1) of the light shielding plate (97) in the state of FIG.
0) moves forward while being biased by the compression spring 94, the light shielding plate 97 is rotated counterclockwise as shown in FIG. 17 and FIG. Therefore, as shown in FIG. 1, since the light shielding plate (97) shields the light projected from the light projecting portion of the substrate positioning sensor (101), the CPU (133) causes the substrate (1) to move.
It is judged that has fallen, and the device is stopped. Further, the device may be stopped and the operator may be notified by a not-shown notification device.

Next, the replacement operation of the nozzle (6) will be described with reference to FIGS. 3 and 9 to 12. This nozzle replacement is performed by, for example, the device having a different discharge diameter, and the discharge part (6
Although the nozzle (6) having a different number of A) is provided in total, another nozzle (6) is provided by changing the type of the substrate (1).
Or the nozzle (6) in which the clogging of the adhesive has occurred is replaced with the nozzle (6) which is not clogged.

First, in a state in which the operator has pulled out the nozzle (6) from the rotor gear (8) and the nozzle holder (9), the cap nut (71) is rotated as shown in FIG. 64) and the nozzle body (6) and the fitting portion (65) of the nozzle tip (64).
The fitting with the fitting groove (66) in 3) is released. And
Fit the desired nozzle tip (64) into the fitting groove (66) and the fitting groove (66) until the flat surface of the flange portion (67) abuts the lower portion of the nozzle body (63). The positioning surface (68) formed on the flange portion (67) shown in FIG. 11 at the time of fitting is positioned inside the protruding piece (69) protruding from the lower portion of the nozzle body (63) (70). ) Insert it while making angular positioning so that Thus, with the nozzle tip (64) fitted to the nozzle body (63), the cap nut (71) is inserted into the nozzle tip (64) through the insertion hole (72) of the cap nut (71). As shown in FIG. 3, the nut is fixed through the screw portion (73) formed on the side surface of the lower portion of the nozzle body (63) through the lower portion.

A heater (76) is fitted in the nozzle holder (9) as shown in FIG. 6, and heat is transferred to the nozzle (6) through the nozzle holder (9) by heat conduction, The heater (76) maintains the adhesive in the nozzle (6) at an appropriate temperature by a temperature adjusting device (not shown). Further, since the nozzle holder (9) is set so as to cover the nozzle tip (64), heat is transferred not only to the nozzle body (63) but also to the nozzle tip (64).

Further, even if the temperature in the syringe (7) rises due to the air pressure supplied through the air tube (79) applied to the syringe (7) while the coating operation is continued, the heat is radiated. Because the heat is dissipated by the copper tube (78) for
Curing of the adhesive in the syringe (7) is prevented.

The discarding operation will be described below.

When the nozzle (6) to be used next time is, for example, the nozzle (6) of the nozzle number 2, as shown in FIG. 23, the unused time (TIME) of 30 [SEC] ( When the number of seconds is reached, the discarding is performed twice based on the number of discarding times (WASTE) of 2 before the main coating operation. At this time, the XY table (4) is moved by driving the X-axis motor (2) and the Y-axis motor (3),
The blank space on the substrate (1) is positioned below the nozzle (6), and the adhesive in the syringe (7) is discharged to the tip of the nozzle (6) by the air supplied through the air tube (79). In this state, the nozzle (6) is lowered to discard the adhesive in the blank area on the substrate (1).

The nozzles (6) having other nozzle numbers are similarly discarded.

Next, the coating operation is sequentially performed, and the operation of recognizing the coating 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 time is, for example, the nozzle (6) with the nozzle number 2, the use time is set as shown in FIG. 1000 [S of time (TIME)
When [EC] (seconds) is reached, trial shot is performed before the main coating operation. At this time, the XY table (4) is moved by driving the X-axis motor (2) and the Y-axis motor (3),
The blank space on the substrate (1) is positioned below the nozzle (6), and the adhesive in the syringe (7) is discharged to the tip of the nozzle (6) by the air supplied through the air tube (79). In this state, the nozzle (6) is lowered and the adhesive is trial-dried.

The XY table (4) is moved so that the CCD camera (32) is located above the blank portion of the substrate (1) on which this adhesive has been trial-printed.

Then, this trial-strike adhesive was applied to CC
It is recognized by the D camera (32). CP based on this imaging result
A calculator (not shown) in U (133) determines the diameter of the adhesive. The CPU (133) compares this diameter with the setting data (including the allowable range) stored in the RAM (131) by a comparison device (not shown), and the determination device determines that the diameter is within the allowable range. Judge whether or not.
Here, if the judgment device judges that the result is a pass, the content of the pass number counter (117) is decremented by 1, and if it is judged as a failure, the content of the rejection number counter (118) is decremented by 1.

The case where the above-mentioned judgment result is acceptable will be described below. Since the nozzle (6) with the nozzle number 2 is set to pass (OK) twice as shown in FIG. 24,
A trial shot is made again. Then, when the above-described work is repeated and the result is acceptable, the content of the pass counter (117) becomes "0", and the main coating operation is started. Further, if the second time is judged to be unsuccessful, the number of times of passing counter (11
Clear the contents of 7) and reject counter (1
After subtracting 1 from the content of 18), the coating amount is adjusted and the trial shot is performed again, and such an operation is repeated until the test passes twice in succession.

Incidentally, in the re-recognition operation after the judgment of the failure, the content of the failure number counter (118) is shown in FIG.
The number of times set for re-recognition (RETRY) (2 times for the nozzle (6) having the nozzle number 2) is subtracted and can be continuously performed until it becomes “0”. If the coating diameter does not fall within the set range even when the content of the rejection number counter (118) becomes "0", the apparatus is stopped.
Further, the device may be stopped and the operator may be notified by a not-shown notification device.

The nozzles (6) having the other nozzle numbers are similarly subjected to trial firing.

The scraping and the trial discharging are not limited to the blank portion of the substrate (1), and a dedicated scrapping substrate may be provided and performed there.

In addition to the non-use time of the present embodiment, for example, the use time, the number of times of use, the number of times of non-use, one board or a plurality of boards can be considered as the condition for discarding. still,
At the start of the operation, it may be arranged to always carry out the discarding or the trial striking.

Further, as conditions for performing the trial ejection, in addition to the use time of this embodiment, for example, the non-use time, the number of times of use, the number of times of non-use, one substrate, or every plural substrates can be considered.

At this time, since the CCD camera (32) is arranged at the center of the nozzle (6) provided with four CCD cameras (32), the coating diameter is recognized after the coating work is performed by the nozzles (6), so that the CCD (32) is located below the camera (32). When the XY table (4) is moved to position the adhesive applied on the substrate (1), there is no waste in the moving distance of the table (4) and the moving time can be saved. Time will also be shortened.

Hereinafter, a manual setup change of the board transfer section of the XY table (4) at the time of model change (change of the board (1) size, etc.) will be described with reference to FIG. The operator presses the operation key (129) with the board (1) to be handled next time being positioned at the board positioning mechanism position of the board transport section. Then, the pulse motor (103) is driven by a command from the CPU (133), and the movable chute (89) is moved in a desired direction. For example, when the substrate (1) to be handled next time is narrower than the previous substrate (1), the movable chute (89) is moved in the direction in which the space between the fixed block (87) and the slide block (90) is narrowed. Then, as described above, C which receives the signal that the substrate positioning sensor (101) has transmitted light
The PU (133) is moved by a certain distance and the compression spring (10
0) issues a command to the pulse motor (103) so that the slide block (90) positions the substrate with an appropriate pressing force, and drives the pulse motor (103) and then stops driving the pulse motor (103). As a result, the setup change of the substrate transfer unit is completed. The CPU (133) receiving the signal of the sensor (101) is the pulse motor (103).
Therefore, even if the operator continues to press the operation key (129), the motor (103) is not driven and the fixed block (87) and the slide block (90) are set at a desired interval, which is convenient. Also, the sensor (101)
Is set so that the slide block (90) detects a certain distance before the point where the desired interval is reached. Therefore, the point where the pulse motor (103) stops is not the detection critical point, so the XY table moves. It is possible to eliminate the influence of unstable detection due to vibration and the like. Also,
The drive of the pulse motor (103) can be set to either high speed or low speed. For example, when the width adjustment distance is long, it can be set to high speed, and when fine adjustment is necessary, it can be set to low speed.

[0079]

As described above, according to the present invention, the completion of the positioning of the substrate can be detected based on the operation of the substrate transfer section.

[Brief description of drawings]

FIG. 1 is a plan view of a substrate transfer section.

FIG. 2 is a view showing a vertical mechanism of a nozzle.

FIG. 3 is a diagram showing a buffer mechanism of a nozzle.

FIG. 4 is a diagram showing a buffer mechanism of a nozzle.

FIG. 5 is a diagram showing a buffer mechanism of a nozzle.

FIG. 6 is a front view of a coating device.

FIG. 7 is a view showing a fixing mechanism of a nozzle.

FIG. 8 is a view showing a fixing mechanism of a nozzle.

FIG. 9 is an exploded view of a nozzle.

10 is a view on arrow A in FIG. 9. FIG.

FIG. 11 is a view on arrow B of FIG. 9.

FIG. 12 is a view showing a heat dissipation copper tube.

FIG. 13 is a front view of a substrate transfer section.

FIG. 14 is a side view of a substrate transfer section.

FIG. 15 is a front view of a coating device.

FIG. 16 is a side view of a substrate transfer section.

FIG. 17 is a plan view of a substrate transfer section.

FIG. 18 is a side view of a substrate transfer section.

FIG. 19 is a plan view of a substrate transfer section.

FIG. 20 is a configuration circuit diagram of a coating device.

FIG. 21 is NC data regarding a coating operation.

FIG. 22 is NC data regarding a coating operation.

FIG. 23 is NC data regarding a coating operation.

FIG. 24 is NC data regarding a coating operation.

FIG. 25 is a flowchart relating to a board positioning operation.

FIG. 26 is a flowchart relating to a board positioning operation.

FIG. 27 is a flowchart relating to a board positioning operation.

FIG. 28 is a flowchart relating to a board positioning operation.

[Explanation of symbols]

 (1) Printed circuit board (4) XY table (6) Nozzle (7) Syringe (8) Rotor gear (9) Nozzle holder (14) Compression spring (19) Nozzle fixing pin (24) Compression spring (27) Nozzle up / down arm ( 32) CCD camera (35) Vertical arm (36) Vertical motor (41) Slide claw receiver (42) Slide claw (45) Compression spring (46) Tapered part (47) Tapered part (52) Air cylinder (55) Claw return Block (56) Contact part (57) Contact part (63) Nozzle body (64) Nozzle tip part (65) Fitting part (66) Fitting groove (71) Cap nut (76) Heater (78) For heat dissipation Copper tube (79) Air tube (80) Syringe cap (84) Supply conveyor (85) Discharge conveyor (87) Fixed block (88) Fixed Module (89) movable chute (90) slide block (94) compression spring (95) fulcrum bearing (96) light shielding plate swinging fulcrum (97) light shielding plate (100) compression spring (101) substrate positioning sensor (103) pulse motor (133) CPU

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiro Nagao 2-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A pair of fixed chutes and a movable chute for carrying a substrate, which are provided at positions facing each other in the widthwise direction of a printed circuit board, and a slide block provided on the movable chute, and elastic means in the widthwise direction of the substrate. In a board positioning device for positioning the board in the width direction, a drive motor for moving the movable chute in and out of a fixed chute, and a drive motor for driving the movable chute. A detection device for detecting the movement operation of the slide block provided on the movable chute, and a judgment to judge that the positioning of the substrate in the substrate width direction between the fixed chute and the movable chute is completed based on the detection result of the detection device. And a device for providing a substrate positioning device.