JPH04199761A - Screen printing machine - Google Patents

Abstract

PURPOSE:To enable any printed board to be supported and fixed by exchanging printed board supporting means for each type of printed board. CONSTITUTION:An X-Y-theta table 87 is constituted by an X-table 88, a Y-table 89, and a theta-table 90, a guide 108 for guiding move of a chuck 5 is provided on the theta-table 90, and a lock lever 110 for fixing a chuck substrate 24 is provided so that it can be rocked around a lock lever supporting axis 109. In this manner, the board supporting means 5 which is placed on a placement stand 87 is removed by canceling the fixing means 110 and is replaced by a new printed board supporting means and then the printed board supporting means is fixed by a fixing means, thus enabling any printed board to be supported and fixed positively.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a screen printing machine that applies a coating agent on a screen plate to a printed circuit board supported by a substrate support means by moving a squeegee through the screen plate. Regarding.

(B) Prior art In this type of screen printing machine, as a means for supporting and fixing a printed circuit board, as disclosed in JP-A-1-321685, the substrate is placed on a suction bottle and supported. As disclosed in JP-A-1-320165, the substrate is held down from above by a collar and supported from below by a holding plate, and as disclosed in JP-A-1-317768, the substrate is sucked and supported by a support stand. Things, and JP-A-1-
As disclosed in Japanese Patent No. 158192, a method in which a board supported by a support member is laterally pressed and fixed by engaging claws has been proposed, and each method has a thin board and the entire back surface is In cases where close support is required,
It is designed to be effective when it is desired to improve the close contact with the screen plate, or when it is desired to support a board with components fully mounted on the back side.

(c) Problems to be Solved by the Invention However, in the above-mentioned prior art, although each device is good for printing a coating material by supporting an effective substrate with each substrate support method, depending on the substrate, it is difficult to support and fix the substrate. There is a disadvantage that printing of the coating agent cannot be performed reliably because the coating agent cannot be properly printed.

Therefore, an object of the present invention is to make it possible to securely support and fix even printed circuit boards such as the above.

(d) Means for Solving the Problems Therefore, the present invention provides a screen printing machine that applies a coating agent on a screen plate to a printed circuit board supported by a substrate support means by moving a squeegee through the screen plate. and is provided with a mounting table on which the substrate supporting means is placed, and a fixing means that fixes the substrate supporting means to the mounting table and can release the fixation in order to replace the substrate supporting means. It is.

(e) The substrate support means placed on the operation mounting table is removed by releasing the fixing means, and replaced with a new substrate support means. do.

In FIGS. 1 to 3, (1) is a screen printing machine, (2) is a supply container unit that supplies a printed circuit board (20), which will be described later, from an upstream device, and (4) is a screen printing machine. This is a chuck positioning unit that positions the chuck (5>) that fixes the chuck (20).

6) is a printing unit that prints a half paste 178〉, which will be described later, on the substrate (20);
) for discharging the substrate <20> from the conveyor section (2)
This is a discharge conveyor section with a similar structure. (9) is a chuck supply unit on which a new chuck (5) is placed when the chuck 5) is replaced, and (10) is a chuck discharge table from which the replaced chuck (5) is discharged.

(11) is a recognition camera drive unit that drives the recognition camera (12). (14) is a cleaning section, (15) is an operation section, (16) is a tower light, and (17) is a safety door. (18) is a door opening/closing sensor that detects opening/closing of the safety door (17).

Next, Chihe Tsuku (5) will be explained.

In FIGS. 4 to 6, (20) is a printed circuit board, which is gripped and fixed to a chuck rail (23) provided on a movable wall (21) and a fixed wall (22). The fixed wall (22) is fixed to the chuck base (24), and the movable wall (21) moves along the guide rail (25) provided on the chuck base (24) relative to the fixed wall (22). It is possible to move while maintaining parallelism with the fixed wall (22), and the distance from the fixed wall (22) can be changed. A guide rod (26) extending from the fixed wall (22) parallel to the guide rail <25> penetrates the movable wall (21), and the screw (27) is inserted into the movable wall (21).
21> to the guide rod (26), thereby fixing it to the chuck base (24).

Pulleys (28) are installed on the fixed wall (22) and the movable wall (21).
are arranged, and a tilt belt (30) is wrapped around each of them. The pulley (28) at the end of the supply conveyor section (2> side
) is pivotally connected to a supply side gear (31), and a discharge side gear (32) is pivotally connected to a pulley (28) at the end on the printing section (6) side. The chuck rail (23) is attached to a chuck roller (36) fitted in a roller groove (35) bored in a slide plate (34) that slides along a slide plate guide (33). cage, slide plate (34
) is moved along the chuck guide (39) by movement of the chuck cylinder (38).

The chuck rail (23) is provided with a chuck type identification hole (40) for identifying the type of chuck (5) using a recognition camera (12).・It is also used to recognize Tsukurair spacing.

<41) is a plurality of backup pins erected on the backup bin plate (42), and as the backup bin plate (42) is moved up and down by a cylinder (not shown), the board (20) is moved up and down as shown by the solid line in FIG. The position supported by the chuck bell 1-(30) and the board (20> shown by the two-dot chain line)
3) Move up and down between positions that are approximately at the same height as the top surface. (4
3) Place the chuck in the correct position of the chuck supply section <9).
This is a dihe-tsuku detection hole for detecting whether the chuck (5) is positioned, and is bored in the chuck base (24). (44) is a chuck-side connector for electrically determining the type of chuck and for energizing various sensors and loads in the chuck (5) from the main body side. The chuck base (24) is hollowed out in the center, and the inner wall of the base (
46> is formed.

There are various types of chucks (5), and the ones explained in Figs. 4 to 6 are of the mechanical clamp horizontal holding type, and are used to hold the substrate (20) supported by backup pins (41).
For example, as shown in FIG. 7, a vacuum suction table (
There is a method called a vacuum suction method in which a substrate (20) supported by vacuum suction (47) is laterally gripped and fixed by a chuck rail (23) having a similar drive structure.

Next, the supply conveyor section (2) will be explained.

In FIGS. 8 and 9, (49> is a supply side motor that rotates a drive pulley (50).
) and the transmission bell) (52
), and a belt drive pulley (53) is pivoted on the transmission pulley (51>.The belt drive pulley (53>) is pivoted on a bobbin shaft (54).Belt drive A supply belt (57>) is wrapped around the pulley (53>) and a pulley (56) arranged on the support wall (55), and the supply belt (57>) is driven by the supply side motor (49>) and the pulley (56) is arranged on the support wall (55). The supply bell I- (57) rotates and the printed circuit board (
20).

<58> is a movable support wall, which is movable along the kite axis (59>) and the bobbin axis (54).A belt drive boob 1 bar 53) is also mounted on the movable support wall (58) side. A supply bell 1 is supported by a shaft (54) and is connected to a pulley (56).
-(57) is crossed. The first chuck positioning part (4) of the pulleys (56) on which the belt (57) is attached
A drive gear (62) is pivotally attached to the gear drive boob 1 bar 60) near the gear drive block 1 with a support wall (55) or a movable support wall (58) in between.
) are engaged.

The transmission gear (63) is attached to a rocking plate (64) that can swing around the rotation axis of the drive gear black 2〉 as a fulcrum.
5> is a spring that biases the rocking plate (64) to rotate in the counterclockwise direction in FIG. 8, and (66) restricts the rocking plate (64) from rotating in the same direction. The transmission gear (62) can be engaged with the supply side gear (31) of the chuck (5) fixed to the chuck positioning part (4), and the rotation of the supply belt (57) causes the transmission gear (62) to Gear (31
).

The discharge conveyor section (8) is similarly equipped with a mechanism for driving the discharge side gear (32>) of the chuck <5).

Next, the chuck supply table (9>) will be explained.

In FIG. 2 and FIGS. 10 to 16, (68) is a chuck supply table on which the chuck (5) is placed to replace it, and the chuck (5) on the table (68) It is pressed by the inner pressing piece (69) or the outer pressing piece (70) and is transferred to the chuck positioning part (4) side along the supply table guide (71).(72) is pressed by the pressing piece (69) ( This is a rodless cylinder for reciprocating the cylinder (70), and a slider (74) slides along the cylinder (73).

A moving body (75) is attached to the slider (74), and a pressing piece mounting plate (
An inner pressing piece (69) is located at the tip of the pressing piece (75), and an outside pressing piece (70) is placed at the rear end of the pressing piece support shaft (76) (77), respectively.
It is mounted so that it can swing around. A stopper rocking plate (79) is further attached to the pressing piece mounting plate (75).

Furthermore, the pressing pieces (69) and (70) are each biased by springs (not shown) so as to swing counterclockwise in FIG. 12.

Chihe-tsuk positioning part (4) of chihe-tsuk supply stand (68)
On the side, there is a stopper (6) that can swing around the support shaft (82).
3) is supported by a shaft and always urged by a spring (not shown) to swing counterclockwise in FIG. (84) is a chuck engagement roller provided at the right end of the stopper (83) in FIG. 12, and as shown in FIG.
8) Engages with the upper chuck (5) to restrict movement.

(85) is a stopper swinging roller, and when the stopper swinging plate (75) moves to the right in FIG. Place it on the board (75) and place it on the stopper (83).
) clockwise to release the chuck (5).

(86) is a chuck detection sensor, which outputs a chuck position abnormality signal when the chuck (5) is not placed so that the chuck detection hole (43) is located above the sensor (86).

Next, chuck positioning 811 (4>) will be explained.

In Figures 10 and 12 to 22, (87)
is the chuck (
5) is placed on the X, -Y-θ rubble. The table (87) includes an X table (88) and a Y table (8
9) and a θ table (90).

The X table (88) rotates the X nut body (9) by rotating the X screw shaft (95) driven by the X motor (94) along a pair of X guide rails (93) provided on the base (91).
6) in the X direction. X kitrail (93
) is provided with an X-Y-θ table (87) movable in the range from the chuck positioning section (4) to the printing section (6).

The Y table (89) is driven by the Y morph (97).
Rotation of the screw shaft (9B) moves it in the Y direction along a pair of Y guide rails (100) provided on the X diffle (88) via the Y nut body (99).

The θ pole screw shaft (10) is driven by the θ motor (101).
2> rotation, the nut body (104) having a roller (103) at one end moves along the screw shaft (102), but the roller (103) is connected to the notch (105) of the θ table (90). The movement of the roller (103) causes the θ table (90
> rotates in the θ direction.

The θ table (90) is provided with a guide (108) for guiding the movement of the chihetsuku (5), but the guide (108> on the right in FIG. ) is provided with a lock lever (no) that fixes the chihetsuku base (24) so as to be swingable around the lock lever support shaft (109).
10) is the cam follower (111) installed on its lower stand.
), the cylinder (112) installed on the θ table (90)
) comes into contact and is completely suppressed, swinging counterclockwise as shown in FIG. 16 and locking the chuck base (24).

The lock lever (110) is connected to the 17th lock lever by a spring (not shown).
It is biased to swing clockwise in the figure.

(114) is a connector block attached to a rod (116) of a connector connection cylinder (115) provided on the θ table, and a main body side connector (117) is attached thereto. When the connector connecting cylinder (115) is activated and the rod (116) is retracted, the main body side connector (117) connects to the chuck side connector (44) as shown in Fig. 19.
I can connect with.

In FIG. 22, Ec (118) is a table standby position detection sensor that detects the standby position of the X-Y-θ table (87) on the side of the supply container section (2). This sensor (
118) may detect the origin in the X direction.

Next, the chuck ejection table (10) will be explained based on FIGS. 2, 10, and 12 to 16.

The chihe-tsuku discharge table (10>) is also provided with υ [output guides (119)] on both sides to guide the movement of the chihe-tsuku (5) pushed out from the θ table (90) and moved.

The chuck ejecting table (10) is further provided with an engaging pawl (123) that can swing around a support shaft (121) and is always urged counterclockwise in FIG. 12 by a spring (122). The engagement claw (123) is attached to the ejection table (10).
)" 2, and the chuck (
5) is prevented from returning. Further, the chuck discharge table (10) is provided with a tip/vine detection sensor (124) which is provided at a position to detect the chuck base (24>) and detects the presence or absence of the chuck (5>).

Next, the recognition camera drive section (11) will be explained.

In Figures 2, 3, 23, and 24, (1
26) is the X moving body, and the X camera drive motor (127
) is driven by the X camera screw shaft (128) to rotate the X camera guide (129) through the Narrow 1- (129).
Move in the X direction along. The X moving body (126) is driven by a Y camera drive motor (131) and rotates.
A camera screw shaft (132) is attached, and the recognition camera (12) attached to the Y nut body (133) that fits into the screw shaft (132) is connected to the Y nut body (133) which is also attached to the Along the camera guide (134>) screw shaft (
132) moves in the Y direction, and recognizes the Chihe-Tsuku type identification hole (40), the position of the board (20>), and the position of the screen plate (144), which will be described later.

A stopper cylinder (136) is further attached to the Y-nut body (133>) so that the rod (137) can extend and contract in the vertical direction, and a stopper cylinder (138)
) to the printed circuit board (
The stopper pin (139) that regulates the rod (1
37) are connected at the tip. The stopper bin (1
39) is a Y-nut body (
133) It moves up and down while being guided through the inside. A substrate sensor (140> for detecting the substrate (20) is attached to the stopper pin boulder (138).

Next, the printing section (6) will be explained.

In FIGS. 25 to 31, (142> is a screen base, and the screen plate (142) is swingable around a screen support shaft (143) provided on the base (142).
A screen mount (145) is attached to which the screen mount (144) is attached. A screen positioning pin (146) is provided on the screen base (142), and a pair of positioning rollers (147) provided on the screen mount (145).
), the screen mount (145) is positioned and fixed on the screen base (142).

(149) is a squeegee mounting base that can swing around the screen support shaft (143);
5) and is connected to the screen mount (145) by a connecting plate (150). Squeegee mounting stand (1
49) has a stopper (151) and a stopper (152).
is provided, the stopper (151) comes into contact with a stopper bolt (153) provided on the screen base (142), and the stopper (152)
5> comes into contact with the stopper bolt (154) provided at
Screen mount (145) and squeegee mount (14)
The vertical position of 9) with respect to the screen base (142) is regulated.

The connecting plate (150) is attached to the squeegee mount (149) using the support bolt (156) as a fulcrum.
It is swingably attached by a connecting cylinder (157) provided at 49). An engagement groove (158) is cut out in the connection plate (150), and when the cylinder (157) is operated, the connection plate (150) swings to open the engagement groove (158).
) is fitted into the engagement port (159) provided on the screen mount (145) as shown in Figure 30, thereby connecting the screen mount (145) and the squeegee mount (149).
).

A support (161) is erected on the screen base (142), and there is a support shaft (162) at the top of the support (161) and a support shaft (163) provided on the squeegee mount (149). Screen-up and down cylinders (164) are rotatably mounted around the respective support shafts (162) and (163), and the operation of the cylinders (164) causes the squeegee mount (149) to rotate around the screen support shafts (143). ).The connecting plate (150) connects the squeegee mounting base (1
49) and the screen mount (145>), the screen mount (145) also swings together with the squeegee mount (149>) by the operation of the cylinder (164).

The squeegee mounting base <149) is further provided with a squeegee base guide (166), and the squeegee base (167) is movable in the X direction along the guide (166). The rotation of the printing motor (168) is controlled by a decelerator (169).
The belt is decelerated and transmitted to the driving pulley (170), causing it to rotate, and the squeegee bell (172), which is stretched between the driving pulley (170) and the driven pulley (171), rotates. The squeegee stand (167) attached to (172) moves. The squeegee stand (167) is provided with a light shielding plate (173), and the origin position of the squeegee stand (167) can be detected by detecting the light shielding plate (173) by the origin detection sensor' (174).

The squeegee stand (167) has two opposing squeegees <1
75) is guided by a squeegee up/down guide (176>) and is attached to be movable up and down by the operation of a squeegee up/down cylinder (177).When the squeegee descends and moves as shown in FIGS. 32 to 39, the paste is removed. Half l1 l (
178> is printed on the printed circuit board (20) on the XY-θ doublet (87) through a pattern hole drilled in the center of the screen plate (144).

A screen base (142) is supported on the base (91).
Move the screen board (144) and printed circuit board (
2o) are provided with four ball screw shafts (179) for bringing them into contact with and away from each other. Screen bottom motor (180
) rotates the screen vertical drive pulley (181), and the screen vertically moves shaft (184) via the belt (182) and the screen vertical driven pulley (183).
Rotate. A worm (18) is attached to the rotation shaft (184).
5) is provided, which engages with the worm wheel (186) provided on the screw shaft (179) and rotates the rotation shaft (
184) rotates the ball screw shaft (179). A bevel gear (187) is provided on the rotating shaft (184), and a bevel gear (188) is attached to a rotating shaft (not shown) provided orthogonally to the rotating shaft (184).
The rotation of the rotation III+h (184) is
With a similar structure, the ball screw shaft (1
79).

The nut (189) provided on the screen base (142) is fitted onto the rotating four-wood ball screw shaft (179), and the screen base (142) is connected to the screen provided on the base (91>). It moves up and down along the L lower guide (190).When the screen up and down motor (180) separates the screen board (144) from the printed circuit board (20) after half a milliliter of paste (17g>) has been applied, A servo motor or a pulse motor is used to raise the screen plate (144) at a low speed that prevents paste solder (178) from remaining on the end face of the pattern holes of the screen plate (144).

Next, the cleaning section (14) will be explained.

In FIGS. 40 to 46, (192) is guided by the X guide rail (93) and the screen plate (1
It is a leaning unit that can move below the belt (194) by the belt joint (193).
is joined to. The bell I- (194) is driven by a drive pulley (196) driven by a cleaning section mork (195).
) and the driven pulley (197), and the rotation of the motor (195) causes the cleaning unit (19
2) moves. (198) is the cleaning unit (
192) is a cleaning origin detection sensor that detects the origin of movement in the X direction.

The cleaning unit (192) is provided with a paper supply roll (200) that winds the cleaning paper (199) with its end fixed.
The cleaning paper (199) that has been completely supplied from ) is wound around the paper feed detection roll (201>), and then
1 - Take-up roller wound along the surface of the roller (202) = 19
- It is wound up on the handle (203).

(205) is the take-up motor, and the droklymic = (2
06) to rotate the take-up drive pulley (207>),
The take-up roll (203) rotates through the take-up bell (208) and the take-up driven pulley (209).The cleaning paper (199) is fed to the end, and the material runs out, and the take-up roll (203) is rotated. When the torque limiter (206) stops rotating and a predetermined load is applied to the torque limiter (206), the torque limiter (206) is turned off and only the motor (205>) is configured to idle.

(211) is a disk that is pivotally attached to the paper feed detection roll (201), and slits (212) are provided at equal intervals on its periphery. When the cleaning paper (199) is wound up by the rotation of the winding motor (205), the roll (201) is rotated by the amount of feed, and the disk (211) is rotated by the amount of feed. The amount of feed of the cleaning paper (199) is detected by detecting the slit (212) through which the cleaning paper (213) passes. The supply roll (200) is clamped by a brake spring (214) with a predetermined force, and the rotation of the supply roll (200) by the take-up motor (205) is braked and the take-up motor (205)
05> stops, the cleaning roller (202> is provided at the tip of the arm (217) that can swing around the spindle (216), The tip of the rod (219) that moves up and down by the operation of the up and down cylinder (218) is a spring (220).
Since the cleaning roller (217) is connected to the arm (217> through the
02) moves up and down. With the roller (202) rising to bring the vapor (199) into contact with the lower surface of the screen plate (144), the cleaning unit (192) moves to automatically clean the lower surface of the screen plate (144). It is done.

(222) is an actuator that can swing around a support shaft (223), and is biased counterclockwise in FIG. 46 by a spring (225) hooked to a spring hook (224). ), and its position is determined by the diameter of the roll. (226) is a paper-out warning switch, and when the winding diameter of cleaning paper (199) reaches a predetermined amount, the actuator <222)
NJ and outputs a paper out warning signal.

Next, the control system will be explained.

As shown in FIGS. 47 and 48, (229) is a CPU that performs various operations related to the printing operation of the printed circuit board (20) of the screen printing machine (1) using the information stored in the RAM (230). Based on the program stored in the ROM (231).

(232) is an interface and an operation unit (15>,
In addition to connecting the recognition camera (12), CRT (233), various sensors, etc., the signal line 1 (235>) and signal line 2 (2
36), signal line 3 (237) and common line (2
38). The potential of the common line (238) is set to a low potential r L . The line (235) (
236) (237) (238> are connectors (u7) respectively
Detection 1 pin (235A) and detection 2 bin (2
36A), three detection bins (237A) and a common supply pin (238A). (239) is a drive circuit.

RAM (230> has 1 printing operation of the board (2o)
A printing counter (240) that counts each sheet, and a cleaning counter (241) that counts the number of automatic cleaning operations.
) and a paper-out notice counter (242) that is subtracted from the set number of times for each automatic cleaning after the paper-out notice is issued, and a paper-out notice counter (242) is provided that is
After the continuity data in Figure 9, the identification hole data in Figure 50, and the paper out warning signal are output, the paper out warning counter (
242), the number of times of automatic cleaning has been set and stored. (243) is a print counter for manual cleaning. In FIGS. 49 and 50, 1chi8・tsuku1'' corresponds to the chuck type ``1'', and 'chuck 2'' corresponds to the chuck type ``2yo''.

The signal 1 pin (24) is connected to the 1 connector (44)
4), signal 2 pin (245), signal 3 pin (246) and common pin (247) are provided, and the main body side connector (
117), the detection pin 1 (235
A>, detection 2 bin (236A), detection 3 bin (237A)
) and the common supply bin (238A). Fourth
The data connector (44) in Figure 7 is chuck type “1”.
”), and the common pin (247) and signal 2 pin (
245) is shorted. The chuck connector <44> in FIG. 48 is of chuck type r2. The common pin (247) and signal 3 pin (246) are short-circuited.

Next, the operation section (15) will be explained.

The operation unit (15) has a numeric keypad (249
), cursor keys (250), SET key (251) used to select the CRT (233) screen, etc.
, Teach key (25) to switch to NC data setting mode.
2>, manual key (253) for entering manual operation mode such as home return, automatic key (254>) for entering automatic operation mode, start key (25) for starting operation.
5), operation key (25) for starting setup change operations, etc.
6) A stop key (257) is provided for stopping the operation.

Next, the setting operation of the NC data will be explained.

First, when you press the teach key (252), the CRT (233
>(7) The screen displays NCDAT as shown in Figure 51.
The AI NFORMAT I ON screen will appear. next,
Operate the cursor key (250) to set the cursor (258) to "PCB-0021," which is the board type you want to set.
Press the E T key (251), then press the CRT (2
33) (7) Both sides are 0PER for setting each data
The ATION DATA EDIT screen will appear.

Next, the worker operates the numeric keypad (249) etc. to
Enter each data as shown in the screen shown in the figure.

Each data in FIG. 52 will be explained.

'EDITING' indicates the board type currently being set. 'P
CB 5IZE, board (20) (7) X direction and Y direction
A take that indicates the size of the direction in "old" units, '
PRI NT I NG (SI NGI, E/D.

11. UBLE) SELECTJ specifies whether the printing operation is a round trip or a round trip. indicates a reciprocating motion. 'CHUCK TYP-21i-E' indicates the type of CHUCK (5) that depends on the board (20) fixing method, 11'' indicates the type of CHUCK that uses the mechanical clamp horizontal holding method described above, and '2 ” indicates the type of vacuum adsorption method.

``5QUEEGEE PRINT AREAJ'' is data indicating the area to be printed in the X direction of the paste solder (178) by the squeegee (175), and ``L,'' indicates the distance from the center of the screen board (144) to the squeegee origin direction. Set the starting position of printing in units of 'IIIJ' and set the distance from the center of the screen plate (<144) in the opposite direction of the squeegee origin as the end position of printing in units of 'L'. . This makes it possible to print only a portion of the printed circuit board (20).

r 5QUEEGEE 5TROKE 0FFSE
T1. is the screen plate (144) of the squeegee (175)
The reference position of the movement of the squeegee (175) in the X direction and the screen plate (14) of the squeegee (175)
4) Since the position of the rear end, which is the point of contact with 4), changes, this distance data is set to completely print the range to be printed, and is in units of strokes.' 5QUEEGEE
5TROKE 0FFSET 2J is squeegee <1
There is a pair of squeegee (
This is distance data for moving the squeegee (175) facing the solder paste (175) by 1 δ to the extent that the paste solder (178) is gathered, and is set at 1'Ji of rmm. '5QUEEGEE 5PEED' is pace)・
This data indicates the moving speed of the squeegee (175) when printing the solder (178), and is set in the unit of 'mm/SQC.

"5CREEN 5EPARATE 5PEED"
is data indicating the speed at which the screen plate (144) rises to separate from the substrate (20) due to the rotation of the screen lower motor (180), and is 'mm/! 3eC
It is set in units of J. By using a servo motor, this data can be set at a slower speed than the rising speed of the cylinder, and the speed can be set arbitrarily depending on the size and shape of the pattern holes on the screen plate (144) or the viscosity of the solder paste. Can be set, and in this example, 0
, 5 mm/1. from SGC. ll1m/5ecL7
) can be set within the range.

"CLEANI NG AREA J" is data that sets the cleaning range of the lower surface of the screen plate (144) by the cleaning roller (202).
" setting is '5QUEEGEE PRINTA RE
The same is true for AJ. 'CLEANING
ROLLER5PEEDJ is a cleaning “1-la (2
02) is a take indicating the moving speed during the cleaning operation, and is set in units of TIm/SeC.'P
APERFEED QUANTITY is data that specifies the amount of paper feed when the paper (202) is wound up by the take-up roll (203>) each time one cleaning operation of the cleaning paper (202) is completed.
It is set in units of TIII J.

=29='AUTOMATIC CLEANING C0UNT
J is data specifying the timing of manual cleaning of the lower surface of the screen plate (144), and the number of automatic cleaning operations is set. ``When OJ is set, the timing of manual cleaning is not specified by the number of automatic cleaning operations.

"PCB PRINTING C0UNTJ is data that specifies the timing of manual cleaning of the lower surface of the screen board (144), and the number of times the board (20) is printed (that is, the number of printed boards) is set. r□
” is set, the timing of manual cleaning is not specified based on the number of times the substrate (20) is printed. Incidentally, the number of times the squeegee (175) is moved may be set and counted by the print counter (243) each time the squeegee (175) is moved.

' P CB -003J (1) NC-F-Yu (7)
The settings are made as shown in FIG. 53.

=30- The operation of the above configuration will be explained below.

First, let's start with the board type "PCB-00" on which we will be printing.
The operation of the preliminary setup change corresponding to No. 21 will be explained. When the teach key (252) is pressed, the screen shown in Fig. 51 is displayed, and the screen shown in
The status of the board type is 'PC' as shown in CURRENT.
It can be seen that it is compatible with B-001J.

First of all, the operator presses the printing i'a+(s) screen board (1
44) with one compatible with 'PCB 002J. Then, screw the movable wall (21) of the chuck (5) (
27〉 and move the movable wall (21) along the guide rail (25) and kite pad (26) to remove PCl3-002.
PCB 5IZ in the Y direction stored in NCDATA of
E "Chuck rail suitable for 70+11111J (2
3) Make the interval between. After this, the operator should move the chuck (
5) is placed on the chihetsuku supply stand (68).

At this time, the chuck (5) is in a position where the chuck base (24) is restricted by the supply table guide (71), and the end surface of the chuck base (24) can come into contact with the outer pressing piece (70). placed in a certain position. At this time, the detection hole (
43) is detected by the chuck detection sensor (86).

Next, while the screen shown in FIG. When suppressed, the following setup change operation is started.

First, the chuck (5) replacement operation will be explained as part of the setup change operation.

First, the cylinder (112) operates and the lock lever (1
10) to prevent it from swinging as shown in Figures 17 to 18.
At the same time as releasing the lock on the θ table (90) of the chuck (5), the connector connecting cylinder (115) operates to connect the chuck side connector (44) of the chuck (5) and the body side connector (117) of the table (90). Separate them as shown in FIGS. 20 and 21. The X-Y-θ table (87) then moves a predetermined distance in the Y direction as shown in FIG.

Next, when the I ladleless cylinder (72) operates, the outer suppressing piece (70) moves to the right in FIG. 12 and engages and presses the chuck (5). ) moves along the guide (71).At this time, as the stopper swing plate (79) moves rightward, the taper at its tip engages with the stopper swing roller (85), The stopper (83) has a 13th stopper around the support shaft (82).
Rotate clockwise as shown in the figure, and attach the counter guide (1) to the chuck (5).
08) to the position shown in Fig. 13.

Next, by operating the cylinder (72) in the opposite direction, the outer pressing piece (70) and the inner pressing piece (69) return to the left side.

At this time, the taper of the inner pressing piece (69) is adjusted to the chuck base (
24), it swings downward and escapes, and when it returns completely and is released from the engagement with the base (24), it swings in both directions by a spring (not shown), as shown in Fig. 14. The base (24) is now in a pressable state. Also, the rodless cylinder (72) returns and the stopper swing plate (79)
〉 does not engage with the stopper swinging roller (85〉), the chuck engagement roller (5)
Since the stopper (83) is held down, the stopper (83) keeps swinging downward.

Then, when the cylinder (72) operates again in the right direction in FIG. 14, the inner suppressing piece (69) engages with the base (24), presses the chuck 5), and moves to the position shown in FIG. 15. let At this time, first X-Y-θ table (87) J
The chuck (5) of "Chunk type 12" which was in the second is X-
The Y-θ table (87) is pushed through the second chuck (5) and discharged onto the chuck discharge stand (10).

When the chuck (5) moves on the chuck ejection table (10), the engagement claw (123) has its taper aligned with the base (2).
4) and is swaying in the f direction, but the
) is disengaged from the base (24) and swings upward as shown in Fig. 15 due to the bias of the spring (122), and the ejected chihe Even if the claw (5) attempts to move toward the X-Y-θ table (87), the engaging claw (123) engages with the base inner wall (46) to restrict the movement of the chihe-ivy <5>.

After that, the X-Y-θ table (87) moves toward the chuck supply stand (68) as shown in Fig. 16, and stops at a position where it can receive the printed circuit board (20) from the supply container section (2>). It's true.

Next, the cylinder (112) and the :1 connector connecting cylinder (115) operate to connect the tilt side connector (44) and the main body side connector (117) from the state shown in Figs. 20 and 21 to the state shown in Fig. 19. At the same time, lock lever (1
10) from the state shown in Fig. 18 to the state shown in Fig. 17, and fix the chuck (5> to the X-Y-θ table (87). The chuck (5) is moved by the operation of the rodless cylinder (72). always stops in place.

Next, as a setup change operation, the connector on the side and side (44
A check operation is performed to see if the type of chuck (5) according to the potential state of each bin matches that specified in NCDATA of PCB-002. This operation will be explained below.

Main unit side connector (117) and chip side connector (4)
4> is connected, the signal 1 line (235), signal 2 line (236), and signal 3 of the main unit side connector (117) are connected.
The line (237) and the common line (238) are connected to the bins (235A>(236A), (237A), and (238A>), respectively.
Connect the signal pin 1 (
244), signal 2 bin (245), signal 3 pin (246)
) and the common bin (247).

The chuck type of the chuck (5) is “11” and is the 47th chuck.
As shown in the figure, common bin (247) and signal 2 bin (245)
) is shorted.

Since the common line (238) is at "L" potential, the potential of the signal 2 bin (245) is also r L , but the signal 1 bin (244) and the signal 3 bin (246)
is in an open state. For this reason, one signal line (2
35) and the signal line 3 (237) are also at the potential "
The CPU (229) is connected to the interface (2
32) to signal 1 line <235>, signal 2 line (236), and signal 3 line (237) in this order r 1 ,
, r O,.

Detect a “1” signal. The CPU (229) compares this redness with the chuck type "IJ continuity data" in the RAM (230) and determines that the correct chuck (5) has been replaced. , Gu Yac (
5) Initialize the sensor, load, etc. by energizing it through the connector.

Next, the type of Chi\・Tsuku (5) that has been replaced and the Chihe・Tsuku (5)
A setup change operation is performed in which the width between the rails (23) is recognized using the camera (12), and this operation will be explained.

First, due to the rotation of the X camera drive motor (127), the X
The recognition camera (12) is moved in the XY direction by the movement of the movable body (126) in the X direction and the rotation of the Y camera drive motor (131) via the Y camera screw shaft (132>) and the Y pear 8 body (133). Move and fix the fixed wall (22).
It stops above the chuck type identification hole (40) of the rail (23).

Then, the recognition camera (12) images the identification hole (40) and determines the diameter of the identification hole (40) and the recognition camera drive unit <1.
1) The position within is recognized. This chuck (5) is of Chihe-Tsuku type 11'' and the diameter of the identification hole (40) is 4J'0.
,7n'on, but when it is recognized that it is 'Q, 711m1J,' the PCB specified in the NC data is
- Since the chuck type of “〇〇2” is 11”, RA
From the identification hole data stored in M (230), the diameter of the identification hole (40) is 0.7111111J, so confirm that they match.
) is as specified, the recognition camera (
12) moves to above the identification hole (40) on the chuck rail (23) of the movable wall (21). And the identification hole (4
0) is imaged and its position within the recognition force drive unit (11) is recognized.

Then, from the recognized positions of both identification holes (40), the distance force between both Z identification-rL (40) (7) CPU (22
The width between both sides of the 9F rail (23) is calculated. PCB-002 (7) NC data color Yj5 direction (
1> substrate width r70 mm, and if it is within the allowable range, the check regarding tech (5>) by the recognition camera <12) is completed.

Next, the position of the replaced screen plate (144) is checked by the recognition camera (12).

First, the screen tote cylinder (164) is operating in the direction of contraction, and only the screen removal stand (145) is placed on the screen base (142>10), but the squeegee mounting stand (167) is not supported. The recognition camera (12) moves in
44) The position of the recognition mark (not shown) attached to the image is recognized. At this time, the mounting angle of the squeegee (175) has also been adjusted to an appropriate angle.

When the recognition operation is completed, the screen upper and lower cylinders (1
64) operates in the direction in which it extends, and the squeegee mounting base (149)
swings downward and stops the stopper (151) and the stopper (15
2) comes into contact with the stopper bolt (153) and the stopper bolt (154>, respectively.Then, the connecting cylinder (15
7) is activated, the connecting plate (150) swings from the state shown in FIG. 31 to the state shown in FIG. 149) is integrally formed with the screen mount (145). In parallel with these operations, the conveyor width of the supply conveyor section (2) and the discharge conveyor section (8)
002J (7) Board (20) (7) Automatically changed to match the Y direction size "79 mm" stored in the NC data.

In this way, the setup change operation is completed.

Next, paste semi-IT onto the printed circuit board (20〉) (1
78> printing operation will be explained.

As mentioned above, when the setup change to PCB 002J is completed, the operator presses the automatic key (254> and presses the start key (255), the X motor (94) rotates and the
The Y-θ table (87) moves to the left side in Figs. 2 and 3, and the supply side gear (31) of the chihetsuk (5) is transferred to the transmission gear (63> of the supply conveyor section (2) as shown in Fig. 8). and engage as shown in FIG.

Then, the supply side motor (49) rotates and the drive pulley (
50), the supply belt (57) rotates via the transmission belt (52), transmission pulley (51), and belt drive pulley (53), and the printed circuit board (20) is conveyed. The gear drive pulley (6o) is rotated by the rotation of the supply belt (57), the drive gear (62) is rotated, and the transmission gear (63) is rotated.
The supply side gear (31) is driven via the. As a result,
The pulley (28) pivoted on the gear (31) is allowed to rotate, the chuck belt (30) is rotated, and the supply bell (57)
The board (20) that has been transported to is transported.

When the feeding and conveying operation of this substrate (20) is started, the RA
PCB 5IZ in NC data in M (230)
From the X data '1ooJ of E, the X camera drive motor (12
7) and the Y camera drive motor (131) is rotated to move the stopper pin (139) to a position where the center of the substrate (2o) is stopped at the center position of the U-chip (5) in the X direction. That is, a stopper pin (
139) is moved. And step 1 ~ collar cylinder (1
36) to lower the stopper bin (139).

In this way, when the printed circuit board (20) is conveyed to the chuck belt (30), the board (20) comes into contact with the stopper bin (139) and is stopped, and the board sensor IJ (140) is stopped. The CPU (229) detects the substrate (20) and uses this detection signal to control the supply side motor (4).
9) and the rotation of the chi/tsukuvertok 30) is stopped.

Next, the chuck (5) fixes the printed circuit board (2o) which has come into contact with the stopper pin (139) and is stopped on the chuck heald (30>), and this operation will be explained.

First, the backup bin (
Backup pin plate (41) with a large number of
2h month 2nd rise, Chuck Held (3o) U:, no board (
20) and raise it to the upper position of the chuck rail (23) shown by the two-dot chain line in FIG.

Next, the chuck cylinder (38) is actuated and the roller groove (35) is moved according to the movement of the roller groove (35) in the slide plate (34) by moving the slide plate (34) to the right along the guide (33). The roller (36) in 35) moves to the inside of the chi
The chuck rail (23) to which the chuck rail (23) is fixed moves along the guide rail (25) in a direction to narrow the gap between the chuck rails (23), and grips and fixes the printed circuit board (2o). When the fixing operation of the substrate (20) is completed, the X-Y-θ table (87) moves in a direction away from the supply/in-hair section (2) by rotation of the X motor (94).

=42- Next, the position of the board (20>) is recognized by the recognition camera (12>).

That is, by the rotation of the X camera drive motor (127) and the Y camera drive motor (131), the recognition camera (12) moves to the positioning mark (not shown) on the board (20), and the position of the board (20) is recognized. Based on this recognition result and the recognition result of the position of the screen board (144) mentioned above,
The X-Y-θ table (87) is rotated by the X motor (94) so that the board (20) is located in the center of the screen plate (144). The Y kite rail (1) is rotated in the Y direction by the rotation of the Y guide rail (97) along the
00> and stops below the screen plate (144).

After that, the rotation of the θ motor (101) causes the θ table (
90) rotates in the θ direction about the θ support shaft (106), and the substrate (20) is positioned at the desired position relative to the screen plate <144>.

The reason why the paste FIJ is applied at the center of the screen plate (144) is to further improve accuracy against printing misalignment. As mentioned above, it is possible to position the board (20) at the center of the screen board (144) even if the board (20) is not fixed at the center of the screen board (5), but if the board (20) is small When fixing the board <20> with the edge of Chi!Tsuku <5), Chi\・Tsuku (5)
The end of the screen plate (144) (1 unit (145)
), the substrate (20) is fixed to the center of the chuck (5).

Next, the screen up and down motor (180) rotates, and the screen up and down drive pulley (181) and bell (182)
The screen vertical rotation shaft (184) rotates via the screen vertical driven pulley (183).
) rotates the ohm wheel (186) that engages with the worm (185) provided on the ball screw shaft (179>
rotates. Then, the rotating shaft provided with the bevel gear (188) that meshes with the bevel gear (187) provided on the rotating shaft (184>) rotates, and an opposing ball screw (not shown) having a similar structure rotates. As a result, the screen base (142) is lowered from FIG. 26 to the printing position shown in FIG. 27 along the screen vertical guide (190).

Thereafter, the squeegee (175) is moved to print the solder paste (178) onto the substrate (20), and this printing operation will be explained in detail below.

NC data'PRINTING(SINGLE/
D OU B L E ) S E L E CT J
is "1", indicating that the reciprocating printing mode is selected.

The printing motor (168) rotates and the drive pulley (170)
, the squeegee stand (167) moves from the origin position at high speed via the driven pulley (171) and squeegee belt (172) to print. The vehicle will stop at the position indicated by the solid line. This stopping position is such that the midpoint position between the left and right squeegees (175) (hereinafter referred to as the squeegee reference position) is the center position 31: of the screen plate (144).
P R I N T A R E A L, J to '5
QUEEGEE 5TROKE 0FFSET 1
'5QUEEGEE 5TROKE 0FF
The stop position is a distance obtained by subtracting SET 2, that is, 601 TIm away from the squeegee origin side (right side in FIG. 32).

-44= Next, as shown in FIG. 33, when the right squeegee (144) is lowered by the operation of the cylinder (177), the printing motor (168) rotates and the squeegee stand (167) moves, so that the squeegee 175) is the '5QUEEGEESPEED' of the NC data up to the position shown by the solid line in Fig. 34.
, and moves while imprinting the paste solder (178) onto the board (20) at a speed of "601 w1/sec" specified by . At the stop position of the squeegee (175) shown by the solid line in FIG. 34, the squeegee reference position is
) from the center of 1 SQUEEGEE PRINT AR
EA L2 Yo "5QUEEGEESTROKE 0
FFSET 1'', i.e. 'gas+,
This is the position where the squeegee stops on the opposite side of the origin.

In this way, paste solder (178) is applied to the printed circuit board (20).
>The printing in the forward direction is completed.

Next, the descending right squeegee (175)
The squeegee stand (167) will rise as shown in the figure, and the squeegee stand (167) will
The '39a' squeegee indicated by 'EGEE 5TROKE 0FFSET2' moves at high speed -46= to the origin side and stops at the position shown by the solid line in Fig. 36, which is the position immediately in front of the gathered solder paste (178). Then, the left squeegee (175) is attached to the cylinder (17
7), it descends as shown by the solid line in FIG. 37.

At this time, the operations of raising the right squeegee (175), lowering the left squeegee (<175), and moving the squeegee stand (167) at high speed may be performed in parallel.

Next, by rotating the print motor (16g), the squeegee reference position is moved from the center of the screen plate (144) to the squeegee origin side.
+ Yoni rSQUEEGEE 5TROKEOFFSE
T1'' is added to the distance, i.e. 190111111 J
Push the squeegee (
175) is the NC data r 5QUEEGEE 5P
EED, speed specified in '60 mn+/scC'
Move the paste solder (1) to the printed circuit board (20).
The printing in the backward direction of 78) is completed, and the printing operation of paste solder (178>) on the substrate (20) is completed.

At this time, the print counter (240) counts rl. Thereafter, the squeegee (175) is raised as shown in FIG.

Next, the screen up and down motor (180)
7)'5CREEN 5EPARATE 5PEE
D", the screen base (142) is raised, and the screen plate (144) is pasted from the board (20) at a speed of '0, 7 mm/sec J indicated by the data. Handa (178
> is not left on the end face of the pattern hole drilled in the screen plate (144) due to friction until it reaches the position shown in Figure 26.
- Get up and leave. At this time, after rising a distance that completely separates the object, the movement may be made to rise at a high speed.

Next, the X-Y-θ table (87) on which the printed circuit board (20) is placed is moved in the Y direction and rotated in the θ direction to a position where the board (20) can be ejected, and the X motor (94)
As a result of the rotation, it moves to the discharge conveyor section (8) side, and engages the output side shaft 32 with a gear (not shown) of the discharge conveyor section (8) in the same manner as in the case of the supply conveyor section (2).

Then, the chuck rail (23) opens due to the operation of the cylinder (38), releases the substrate (20), and the backup pin (41) moves down to place the substrate (20) on the chuck belt (30). be done. After this, the discharge conveyor section <
8) begins to rotate, the board (30) transports the board (20) and transfers it to the discharge conveyor section (8), which transfers the board (20) to the downstream equipment. to be discharged.

Next, due to the rotation of the X motor (94), the X-Y-θ table (87) is moved to the supply conveyor section (2> side, and the supply side gear (31) is moved to the supply conveyor section (2>) in the same manner as described above. The C1 supply side motor (
49) rotates and the supply bell h (57) moves to the next board <2
0) and transfers the substrate (20) to the chuck belt (30).
Transfer.

Then, in the same manner as described above, the substrate (20) is fixed and positioned below the screen plate (144). Then, the screen plate (144) descends and the squeegee (17)
5), the paste solder (178) is printed, but the Mai squeegee (175) up to this point is the 48th
- The right squeegee (175) immediately descends and printing is performed in the same manner as described above, and the printing counter (240) reaches r2. will be advanced to.

Thereafter, the substrate (20) is ejected and the same operation as described above is performed for printing the next substrate (2o).

In this way, the number of times the substrate (20) has been printed is determined by the print counter 110. After the board (2o) is discharged by the discharge container section (8), the screen plate (144)
An automatic cleaning operation of the surface is performed. The print counter (240) is cleared when the set value is reached.
”. This automatic cleaning operation will be explained.

When the printed substrate (20) is discharged as described above, the X-Y-θ table (87) is moved toward the supply conveyor section (2) by the rotation of the X motor (94), and is moved to the table standby position. It stops at the position detected by the detection sensor (118). This position is also the position where the transmission gear (63) of the supply conveyor section (2) and the supply side gear (31) engage. The detection sensor (118) has an x-y-θ table (
87>, the cleaning origin detection sensor (198>
The cleaning unit (19), which was waiting at a position where the X-Y-θ table (87) detected by
2) is caused by the rotation of the cleaning part motor (195) and the rotation of the bell 1- (194), which causes the X guide rail (93>
along the screen plate (144>). If the table standby position detection sensor (118) does not detect the
192) is configured not to move in the X direction, and the X-Y-θ table (87) is configured not to move in the X direction unless the cleaning origin detection sensor (11g) detects the cleaning unit (192). has been made.

Next, the roller upper and lower cylinders (218) operate and the arm (
217) swings upward about the support shaft (216), and the roller (202) is wrapped with cleaning paper (199).
is in contact with the lower surface of the screen plate (144) as shown in Fig. 55 while being biased by a spring (220).
Since "LI==65J" is specified in NG AREAJ, it is located a distance of 65 mm from the center of the screen plate (144) toward the discharge conveyor section (8).

The cleaning part motor (195) rotates while the roller (202) moves upward and touches the cleaning paper (199) against the screen plate (144), and the NC data is
Roller (202) at the speed set in ``CLEANING ROLLER5PEED''``50m1Tl/5eCJ''
The cleaning paper (199) wipes the lower surface of the screen plate (144). The roller (202
) is supplied from the center of the screen plate (144): 1 The NC data "CLEANINGA R" is supplied from the center of the screen plate (144).
E A L t J Te Specified Distance '65111
After traveling from the center of the screen plate (144) to mJ, the motor (195) stops.

Here, the cleaning paper (199) wound around the roller (202) is wound onto the take-up roll (203) by rotation of the take-up motor (205). The cleaning paper (199) is supplied from the supply roll (200), and is wound onto the take-up roll (203) via the roller (202) while rotating the paper feed detection roll (201> without slipping). The sensor (213) detects the slit (212) of the disk (211) attached to the end of the paper feed detection roll (201), and the NC data 'PAPERFE' is detected.
Feed amount set in ED QUANTITYJ '15
m, when it is detected that it has been fed, the winding motor (205)
rotation is stopped.

Next, the cleaning unit motor (195) rotates, and the cleaning unit (192) moves the cleaning paper (199) to the screen plate (
144) Move while wiping the bottom surface and press the roller (202>
is the screen plate < 144) from the center of the discharge conveyor section (8
) side at a distance of '55nwn, it stops. Then, the roller upper and lower sills (218) are operated, the arm (217) swings downward, and the roller (202> is lowered away from the lower surface of the screen plate (144).

Next, apply cleaning paper (199) in the same manner as above.
After being wound up on the take-up roll (203>), the cleaner 5
3 = The cleaning unit (192) moves to the position where it is detected by the cleaning origin detection sensor (198) on the ejection conveyor section (8) side.In this way, when the automatic cleaning operation is completed, the cleaning counter (241) Count the number of automatic cleanings r1.

While the above cleaning operation is being performed, the next substrate (20) is transferred from the supply conveyor section (2) to the chuck belt (
30), and is gripped and fixed in the same manner as above by the chihe/took rail (23), but the automatic cleaning operation has ended and the cleaning origin detection sensor (
198) detects the cleaning unit (192), the X-Y-θ table (87) moves below the screen plate (144) along the X guide rail (93), and the substrate (20) is positioned. The paste solder (178) is printed in the same manner as described above.

The above operation is repeated and the cleaning counter (2
41) is the NC data 'AUTOMATI CCLEA
When the "12" set in NI NG C0UNTJ is reached, an operation for manual cleaning is performed.

That is, when the cleaning counter (241) reaches 12J and the cleaning unit (192) moves and is detected by the cleaning origin detection sensor (198), the connecting plate (150) is moved to the engagement pole 1- (159). Engage and connect the squeegee mounting base (149) and screen sample base (145).
Screen upper and lower cylinders (164) connected to the body
operates, and the screen plate (144) and screen base (
142) opens as shown in FIG. 29, and the cleaning count (241) is cleared. After this, although the power is on, all motors and cylinders are not driven and their current positions are maintained. In this case, it is assumed that the next board (20) is fixed to the chihetsuk (5) and recognition of the board (20) by the recognition camera (12) has been completed.Then, the yellow of the tower light (16) The lamp flashes to notify the operator that it is necessary to manually clean the bottom surface of the screen plate (144).
Hand-made screen boards (144) on both sides of (233)
A message indicating that the machine is waiting for cleaning is displayed.

Next, when a worker comes and opens the safety door (17), the door open/close detection sensor (18) detects it and turns off the yellow lamp of the tower light (16), but the power remains on.CPU
(229) does not issue a command to drive the motors and cylinders, but the rotational position of each motor and the state of each cylinder are stored in RAM (230>).

In addition, operations on the operation unit (15) other than checking the CRT screen or turning off the power are not accepted. Clean.

When the cleaning is finished, the operator closes the safety door (17) and depresses the start key (255). After the sensor (18) detects that the safety door (17) is closed, the start key (
255) is pressed, the CPU (229) operates the screen lower cylinder (164) to close the screen plate (144) to the screen base (142) and bring it into the state shown in FIG. However, it is assumed that there is no substrate (20). Then, the X-Y-〇 table (87) moves below the screen plate (144), and the above-mentioned positioning is performed and the printing operation is performed.

The above operations are repeated, but “PCB-002,
When the printing of the board (20) is finished, the screen printing machine (
1) Eyes are stopped. Print motor (168) when stopped
All drive source ports have returned to their original positions.

Next, the printing operation of the board (20) of 'PCB-003' is to be performed, but first a setup change is performed.

The operator presses the teaching key (252), replaces the screen board (144) with 'PCB-003' as described above, and replaces the screen board (144) with 'PCB'-003. After placing the chuck (5) with a width of 200 mm on the chuck supply stand (68) in the same manner as above, the screen of the CRT (233) in Figure 56 shows the same as above. 1PCB-
003", move the cursor (258) to "3J" and press the activation key (256). Then, 'PCB 0
The same setup change operation as in the case of 02J is executed.

In this case, first the connector connecting cylinder (115) operates and the chihesock side connector (44) connects the main body side connector (
117), the connector (44) in this case is connected to the common bin (24) in Figure 48.
7) and the signal pin (245) are short-circuited, and the other pins are in the open state, so the faith υ°1 line (235), the signal 2 line (236), and the faith υ3 line (237) are "
1° “1” 101, and “PCl3-003.NC”
Since it matches the data shown in Figure 49 for Chihe-Tsuku type "2" shown in the C deck, the sensor, load, etc. of Chihe-Tsuku (5) are energized through the connector 1, and the initial
will be raised.

Then, the recognition camera (1
2) recognizes that the hole diameter is 'l, Qmm, and the Chihe Tsuku species r2. shown in the NCC deck of 'PCEI-003. Confirm that the data match the data shown in FIG. Thereafter, the setup change operation is continued in the same manner as in the case of 'PCB-002'.

Then, press the automatic key (254) and then press the start key (
When 255) is pressed, the printing operation of paste) and solder (178) on the board (20) is started in the same manner as described above.

' The board (20) of PCB-003 is shown by the two-dot chain line in Figure 32 to Figure 39, and the RAM (23)
0) NC data rSQUEEGEE PRINT
AREA, is 'L+=1501, "L2=150"
Therefore, the printing motor (168) rotates and the squeegee (175>, which moves at high speed, stops at the position shown by the two-dot chain line in FIG. The squeegee (175) descends as 'Lz=15
0 J, the NC data' 5QUEEGEE 5PEE reaches the position shown by the two-dot chain line in Fig. 34.
The paste solder (178) is printed on the substrate (20> shown by the two-dot chain line) by moving while pressing the screen plate (144) at a speed shown by DJ '80 mm/secC'.

Next, the descending right squeegee (195)
As shown in the figure, move up and select the NC data "5QUEEGEE".
5TROKE 0FFSET 2'' at high speed and stops at the position shown by the two-dot chain line in FIG.

After this, as shown in Fig. 37, the left squeegee (175) indicated by the two-dot chain line descends and the '5QUEEGEE P
Since 'RINT AREA' is 'L+=150°,' 5QUE
Speed indicated by EGEE 5PEEDJ' 80
II! The printing of paste solder (178) in the backward direction is completed by moving at a speed of III/sec J. And the third
As shown by the two-dot chain line in Figure 9, the squeegee (175) is raised twice.

Then, as in the case of 'PCB 002J' described above, the screen plate (144) is moved up and away from the board (2o), and the board (20) is discharged by the discharge conveyor section (8).

Next, paste solder (178) is printed on the next board (20) in the same manner as described above, but the paste solder (178) is printed on the next board (20).
20) is positioned below the screen plate (144), the squeegee (175) has been moved from the position indicated by the two-dot chain line in Fig. 39 to the position indicated by the two-dot chain line in Fig. 32.

After that, ・'AU of NC data of "PCB-003"
TOMATIC CLEANING INTERVAL
The 1θth board (2
Regarding 0), when the printing operation of paste solder (178) is completed, 'CLEANING AREAJ data'
L+= 165 J, r L, == 1651 rCLEANING ROLLERSP, EE
Automatic cleaning is performed in the same manner as in the case of PCB-002 at a speed of "70 a/see J" indicated by the DJ data.

Then, set “5” to PCB PRINTING COUNT.
Since 0yo has been set, the counter (243) is 1.
After counting 50J, printing of paste solder (178) is completed for the 50th board (20) and the discharge conveyor section (8)
When the ejection is completed, the screen upper and lower cylinders (16
4) is activated and the screen plate (144) is lifted. Next, cleaning is performed by the operator, and the printing operation is continued by pressing the start key (255).

The above operations are repeated, but the cleaning paper (199) is removed each time the automatic cleaning operation is performed.
is wound up on the take-up roll (203), and is wound on the supply roll (20
The winding diameter of the paper (199) wound around 0) gradually decreases. Paper (199) on supply roll (200)
When the winding diameter decreases, the actuator (222) rotates around the spindle <223) due to the bias of the spring (225), and presses the advance notice switch (226) at the position indicated by the two-dot chain line in Fig. 46. Turn it "ON" to output a paper out warning signal.

The CPU (229) turns on the yellow lamp of the tower light (16) based on the paper-out warning signal, and also turns on the CRT.
A paper out warning is displayed on the screen of (233). Then, the paper-out notice counter (242) is set to "5", the number of times automatic cleaning is possible. After that, if the paper is not replaced, the counter (242) will be displayed every time automatic cleaning is performed.
Subtract and proceed. At this time, the possible number of times stored in the counter (242) may be displayed on the screen of the CRT (233). Automatic cleaning is performed five times after the paper out warning is issued, and when the counter (242> reaches 0.), the yellow lamp of the tower light (16) blinks and the printing operation stops. ) will display an out-of-paper display.At this time, the cleaning unit (192) may be placed on standby at a position where it can be easily replaced.

Next, before opening the safety door (17), the worker must replace the cleaning paper (199) with a new one and then open the safety door 1.
7) Close. When the door opening/closing detection sensor (18) detects that the safety door has been opened, the excitation of each motor is cut off, making it impossible to know the rotational position of each motor. Let's do it.

For this purpose, first press the manual key (253) and move the cursor (25g>) on the MANUAL 5ELECTION screen in Figure 57 to select RETURN 0PERAT I.
When the operation key (256) is pressed in conjunction with ON, each motor and cylinder return to their origin. After this, when the automatic key (254) is pressed and the start key (255) is pressed, the printed circuit board (20) is moved to the supply conveyor section (
2), and the printing operation described above is performed.

Further, if the cleaning paper (199) is replaced while the paper-out notice is being displayed, the operator presses the stop key (257) to stop the printing operation. At this time, the board (20
) is applied to the discharge conveyor section (8), the screen printing machine (1) stops. Then, the cleaning paper (199) is replaced in the same manner as after the full door (17) is opened and the paper out display is displayed, and the automatic printing operation is restarted.

In addition, to detect paper out, use cleaning paper (199
) is wound up to the end, and then the end is fed to the supply roll (200
), the torque limiter attached to the output shaft of the take-up motor (205)
(206') receives a predetermined load and the winding motor (206') cuts off.
05), but the disc (211) rotates idly. This can also be done by the sensor (213) not detecting the amount of feed of the cleaning paper (199>).

Furthermore, if the torque limiter (206) is not provided and the cleaning paper (199) is cut at any position, the paper feed detection roll (201) will not rotate and therefore the feed amount detection sensor (213) will not rotate. Although it is not detected that the paper is being fed, the take-up motor (205) is rotating. Or cleaning paper (199'
) is not fixed to the supply roll (200) and the paper (199) is completely fed to the end, the feed amount detection sensor (213) will not detect that the paper is being fed. The take-up motor (205) is rotating. Therefore, if the torque limiter (206) is not provided and the feed amount detection sensor (213) does not detect that the paper is being fed and the take-up motor (205) is rotating,
CPU (229) is cleaning paper (199)
It may be determined that the material is out of stock.

In addition, a preset number of times automatic cleaning is possible is stored in a paper-out notice counter (242), and after a paper-out notice signal is output by turning the notice switch (226) 1ON, the counter ( Alternatively, the counter (242) may be set to rOl and the counter (242) may be incremented and memorized for each automatic cleaning operation after the warning signal. It is also possible to run out of paper when the number of automatic cleanings is reached.

Furthermore, the number of times that automatic cleaning can be performed after the paper run-out notice is given is determined by storing the remaining distance of the cleaning paper (199) when the notice switch (226) is turned "ON" and feeding the paper when PAPERFEEDQUANTITY is set. It may be calculated based on the amount.

Also, when replacing the chuck (5), in "PCB-002", the data of "CH'UCK TYPEJ" is changed to "1.
It was supposed to be replaced with a chuck type ``1'' Goohe Tsuku (5), but the worker mistakenly replaced it with a chuck type ``12''.
When the chuck <5) is placed on the tilt supply table (68) and the operation key 256) is pressed as described above,
After the chuck (5) is transferred onto the X-Y-〇 diffle (87), it is locked by the lock lever (110>) and the chuck side connector (44> and the main body-G side connector (117>) are locked. Then, the signal 3 bin (246) is r L , and the signal 1 bin (244)
Since the signal 2 bin (245) is open, the signal "IJ + ' 1
", -'Q" are detected. This signal is
Tsuku species r1. Because it is different from that of CRT (233)
Displays on the screen that the chuck type of the chuck (5) is different, lights up the red lamp of the tower light (16) to notify the operator, and also operates the cylinder (112> and cylinder (115)). ITI Tsukreba (110)
Release the lock and disconnect the chihesock side connector (44>) and the main body side connector (117).
Remove the chuck (5) from the chuck ejection table (10), and put the chuck (5) of chuck type RL again on the chuck supply table (
68) and perform the above-mentioned setup change operation, the chuck (5) can be replaced with the correct chuck (5). If there is no function to check the chuck (5) based on the electrical continuity state of this connector, do not replace the chuck type V1 so that it is connected twice, and replace the chuck type 2. Even if the chuck (5) is replaced, when the recognition camera (12) recognizes the chuck type identification hole (40) of the chuck (5), the diameter will be '1.
nwn, and without exchange, the species '1.'0
, 7ian, so the lock can be released in the same way,
Disconnect the connector and notify the operator. Further, even when the chuck rail spacing determined by the identification holes (40) does not match the substrate size of the NC data, the same operation as when the chuck types are different is performed.

Furthermore, when replacing the chuck (5), the operator must
5) is not placed in the correct position on the chuck supply table (68>) and the chuck detection sensor (86) is not detecting the chuck detection hole (43) of the chuck (5), press the activation key (256) as described above. ) is pressed, a chuck position error signal is output, the rodless cylinder (72) does not operate, and the change operation of the chuck (5) is not started. ), the chuck (5) is placed on top of the chuck ejection table (10) and the chuck detection sensor (124) is replaced.
), when the chuck (5) is detected, even if the activation key (256) is suppressed incorrectly as described above, the rodless cylinder (72) will not operate and the chuck (5) will not operate.
) does not start. 6 Furthermore, in this embodiment, among the signal 1 pin (244) to signal 3 pin (246) of the chuck side connector (44), the pins that are not connected to the common pin (247) are in automatic operation. 5)
The output signals from the various sensors built into the CPU are output to the CPU (229) via the interface (232), but immediately after the chip (5) is replaced, these sensors are not energized. However, since these pins (244) to (246) are not shared with signal transmitting pins, the pins other than the pins that are shorted to the common pin (247) are always left open. Good too.

Furthermore, in this embodiment, when replacing the chuck (5), the inner pressing piece (
69) and the outer suppressing piece (70) to push out and replace the chuck (5), but first, the IU of the lock lever (110) was replaced without using a drive source such as a rodless cylinder (72).
Remove the hook and the main unit is good! l :z connector (114>
from the chuck side connector (44), then manually remove the chuck (5) on the X-Y-θ table (87).
) on the chuck supply stand (68) or chuck ejection stand <
10) side, place a new chuck (5) on the chuck supply table (68), and push it by hand to the supply table guide (71>).
and sliding movement along the guide (108) X-Y-θ
Place it on the table (87) and then use the lock lever (1).
10) By locking it, Chihe Tsuku <5)
can be exchanged. However, in this case, it is necessary to provide a stopper for positioning the chuck (5) when pushing it in by hand.

(G) Effects of the Invention As described above, according to the present invention, the board support means can be replaced depending on the type of printed circuit board, so any printed circuit board can be reliably supported and fixed.

[Brief explanation of the drawing]

FIG. 1 is a front view of a screen printing machine to which the present invention is applied;
Figure 2 is a plan view of the printing press with the safety door removed, Figure 3 is a front view of the printing press with the safety door removed, Figures 4 and 7 are side views of the Chihe-Tsuku, and Figure 5. is the front view of Chihe Tsuku, No. 6
The figure is a plan view of the chuck, Figure 8 is a front view of the supply conveyor section and chuck, Figure 9 is a plan view of the supply conveyor section and chuck, and Figure 10 is the same as in Figure 2 with the chuck and printing section removed. 11 is a front view of the chuck supply section, FIGS. 12 to 16 are side views showing the operation of replacing the chuck, FIGS. 17 and 19 are front views of the chuck positioning section, and FIG. 18 is a front view of the chuck supply section. The figure is a front view showing a situation where the lock lever is removed, Fig. 20 is a front view showing a situation where the main body side connector is separated from the chuck side connector, and Fig. 21 is a front view showing a situation where the main body side connector is separated from the chuck side connector. FIG. 22 is a plan view showing the X-Y-θ table, FIG. 23 is a plan view of the recognition camera drive section, FIG. 24 is a front view of the recognition camera drive section, and FIG. 25 is a printout. Plan view of section, 2nd
Figures 6 to 29 are front views of the printing section, Figures 30 and 3.
1 is a side view of the printing section, FIGS. 32 to 39 are front views showing the printing operation, FIG. 40 is a front view showing the cleaning section, FIGS. 41 and 45 are side views showing the cleaning section, Figure 42 is a front view of the cleaning section broken away;
3 is a side view of FIG. 41 with the supply roll and paper feed detection 1j-le removed; FIG. 44 is a plan view of the cleaning section;
FIG. 46 is a front view of the cleaning unit for explaining the operation of the paper-out notice, FIG. 47 is a control block diagram of the present invention, and FIG. Figure 49 is a diagram showing continuity data, Figure 50 is a diagram showing identification hole data, Figures 51 to 53, Figure 5
6 and 57 are views showing the CRT screen, and FIGS. 54 and 55 are front views of the X-Y-θ table and cleaning section. (5)... Chihe Tsuta (substrate support means), (20)
... Printed circuit board, (87) ... X-Y-θ table (mounting table), (110) ... Lock lever (fixing means), (112) ... Cylinder (fixing means).

Claims (1)

[Claims] (1) In a screen printing machine that applies a coating agent on a screen plate to a printed circuit board supported by a substrate support means by moving a squeegee through the screen plate, a mount for placing the substrate support means. 1. A screen printing machine comprising a mounting table and a fixing means that fixes the substrate supporting means to the mounting table and can release the fixing in order to replace the substrate supporting means.