JPH04199763A - Screen printing machine - Google Patents

Abstract

PURPOSE:To enable a printed board to be supported positively without any mistake by discriminating the type of a printed board supporting means with a combination of potential even if a different type of printed board supporting means is replaced by mistake by an operator. CONSTITUTION:Pins which are not connected to a common pin 247 out of a signal 1 pin 244 and a signal 3 pin 246 of a connector 44 at a chuck side outputs an output signal from each type of sensor which is built into a chuck to a CPU through an interface 232 during automatic operation but is left open-circuited wihtout feeding current to the sensors, etc., immediately after replacement of the chuck. Then, A voltage supply terminal 238A which supplies a voltage for detection at a machine body side is connected to detection voltage input terminals 235A-237A of the printed board supporting means and the voltage for detection is supplied to identification terminals 244-246 which are short-circuited to the voltage input terminals for detection 235A-237A. A judging means determines a type of the printed board supporting means according to a combination of potential of a potential detection terminal 247 which is connected to the identification terminals 244-246, thus enabling the printed board to be supported without any mistake even if replacement of the printed board supporting means is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention is a method for applying a coating agent on a screen plate through the screen plate to a printed circuit board supported by a replaceable substrate support means by moving a squeegee. related to screen printing machines.

(b) Prior Art In this type of screen printing machine, conventionally, the substrate support means for positioning and fixing the substrate has not been replaced.

(c) Problems to be Solved by the Invention However, when attempting to replace the board support means to match the board, if an operator accidentally replaces a different type of board support means, it is difficult to ensure that the printed circuit board is properly replaced. The problem is that it becomes unsupportable.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to enable a printed circuit board to be supported without error even when the board support means is replaced.

(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 replaceable board support means by moving a squeegee through the screen plate. In this case, a voltage supply terminal for supplying a detection voltage and a plurality of potential detection terminals for respectively detecting potential are provided on the body side, and the board support means has a detection voltage input terminal connected to the voltage supply terminal and a board. A plurality of identification terminals that are short-circuited to the detection voltage input terminal and connected to each of the potential detection terminals are provided in combinations depending on the type of support means, and the board support means is configured according to the combination of potentials of the identification terminals. A judgment means is provided to judge the type of the item.

(f) A voltage supply terminal for supplying a detection voltage on the working unit side is connected to a detection voltage input terminal of the substrate support means, and the detection voltage is supplied to an identification terminal that is short-circuited to the detection voltage input terminal. . A determining means determines the type of substrate supporting means according to a combination of potentials of potential detection terminals connected to the identification terminal.

(to) Example An embodiment of the present invention will be described below based on the drawings.

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

(6) is a paste solder (1) to be described later on the substrate (20).
78), and (8) is the printing unit that prints (6).
This discharge conveyor section has the same structure as the supply conveyor section (2) that discharges the substrate (20). (9) is Chuck (
When chuck 5) is replaced, it is a chuck supply unit on which a new chuck (5) is placed, and (10) is a chuck discharge table from which the replaced chuck (5) is discharged.

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

Next, the chuck (5) will be explained.

In FIGS. 4 to 6, (20) is a printed circuit board, which is gripped and fixed by chuck rails (23) provided on the movable wall (21) and the 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). The movable wall is a guide rod (26) that extends from the fixed wall (22) parallel to the guide rail (25). (21), and the screw (27) passes through the movable wall (
21) to the guide rod (26), thereby fixing it to the chuck base (24).

A pulley (28) is installed on the fixed wall (22) and the movable wall <21>.
are completely arranged, and a chuck belt (30) is wrapped around each. The pulley (28) at the end of the supply conveyor section (2)
>A supply side gear (31) is pivotally attached to the pulley (28) at the end on the printing section (6) side, and a discharge side gear (32) is pivotally attached to the 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 tilt 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). The hole (40) is also used to recognize the chuck rail spacing. (41
〉 is a plurality of backup pins erected on the backup pin plate 〈42〉, and by raising and lowering the backup pin brake I (42) by a cylinder (not shown), the board 〈20) is shown by the solid line in Fig. The substrate (20) is moved up and down between the position where it is supported by the chuck belt (30) shown in FIG. (43) is the chuck (5) in the correct position on the chuck supply part (9)
This is a chuck detection hole for detecting whether or not the chuck is located, and is bored in the chuck base (24). (44
) is used to electrically distinguish the chuck type and the chuck (
This is a chuck-side connector for energizing the various sensors and loads in 5) from the main body side. Chuck base (24
) is hollowed out in the center to form a base inner wall (46).

There are various types of chucks (5), and the one explained in Figs. 4 to 6 is a mechanical clamp horizontal holding type, which holds the substrate (20) fully supported by the backup bin (41).
is gripped laterally by a chuck rail (23). 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 the drive pulley (50). The pulley (50
) and the transmission pulley (51) is a transmission belt (52).
A belt driving boot 1 bar 53) is pivotally attached to the transmission boot 1 bar 51>. Belt driven pulley (
53) is pivotally supported by a bobbin shaft (54). A supply belt (57) is wrapped around the belt drive pulley (53) and a pulley (56) that can be installed on the support wall (55), and is driven by the supply side motor (49) to the support wall (55). The bolt (57) rotates to the provided supply, and the printed circuit board (20
).

(58) is a movable support wall, which is movable along the guy F axis (59) and the boe axis (54). Movable support wall (
The belt drive pulley (53) is also connected to the bobbin shaft (58) side.
A supply belt (5) is supported between the pulley (56) and the pulley (56).
7) is passed. Among the pulleys (56) around which the belt (57) is stretched, the gear drive pulley (60) closest to the chuck positioning part (4) is provided with a support wall (55) or a movable support wall (58) in between. A drive gear (62) is fully engaged, and a transmission gear (63>) meshes with the drive gear (62).

The transmission gear mechanism 3) is attached to a rocking plate (64) that can rock around the rotating shaft of the drive gear (62).
5) is a spring that urges 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. It is a stopper. The transmission gear (62) can mesh with the supply side gear (31) of the chuck (5) fixed to the chuck positioning part (4), and rotates the supply side gear (31) by rotation of the supply belt (57).
).

Similarly, the chuck (5) is also discharged to the discharge conveyor section (8).
7- A mechanism for driving the exit gear (32) is provided.

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

In FIG. 2 and FIGS. 10 to 16, (68) is a chuck supply stand on which the chuck (5) is placed to replace it, and the inside press of the chuck (5) of the rigging (68) It is pressed by the piece (69) or the outer pressing piece (70) and is transferred to the chuck positioning part (4) along the supply table guide (71). (72) is a rodless cylinder for reciprocating the pressing pieces (69) and (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 (75) attached to the moving body (75) is attached to the slider (74).
5), an inner pressing piece (69) is attached to the tip end thereof, and an outer pressing piece (70) is attached to the rear end thereof so as to be swingable around the pressing piece support shaft (76>(77). A stopper swing plate (79) is further attached to the single mounting plate (75>).

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

A stopper (83) that can swing around the support shaft (82) is provided on the chuck positioning part <4) side of the chuck supply table (68).
is supported by a shaft and always urged by a spring (not shown) to swing counterclockwise in FIG. (84) is a stopper (
83) is a chuck engaging roller provided at the right end in FIG. 12, and as shown in FIG. 12, it engages with the chuck (5) on the chuck supply table (68) to restrict movement. (85
) is the stopper swing roller, and the rodless cylinder (
When the stopper rocking plate (75> moves to the right in FIG. 12 due to the operation of the stopper rocking plate (72)), the stopper rocking plate (75) rides on the rocking plate (75) along the tapered portion at its tip and moves the stopper (83) clockwise. to release the restriction on the chuck (5).

(86) is the chuck detection sensor→ノ'', and if the chuck (5) is not placed so that the chuck detection hole (43) is positioned above the sensor (86>), a chuck position abnormality signal is sent. Output.

Next, the chuck positioning section (4) will be explained.

In Figures 10 and 12 to 22, (87)
is the chuck (
5) is an X-Y-θ table on which it is placed. The table (87) includes the X table (88) and the X table (89).
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 guide rail (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 X table (89) is driven by the Y motor (97).
Rotation of the screw shaft (9B) causes the screw shaft (9B) to move in the Y direction along a pair of Y guide rails (ioo) provided on the X table (88) via the X nut body (99).

θ ball screw shaft driven by θ motor (101)
2> rotation, the nut body (104) having a roller (103) at one end moves along the screw shaft (102). 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) that guides the movement of the chuck (5), but the guide (108) on the right side in Fig. 10 is cut out at two places and the θ table (90) is A lock lever (110) is provided to swing the chuck base (24) around the lock lever support shaft (109). Lock lever (11)
0) swings counterclockwise as shown in Fig. 16 when the cylinder (112) provided on the θ table (90) contacts and presses the cam follower (111) provided at the bottom of the cam follower (111) provided at the bottom of the cam follower (111). Lock the base (24). The lock lever (110) is urged by a spring (not shown) to swing clockwise in FIG. 17.

(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 rod (116) is retracted by the operation of the connector connecting cylinder (u5), the main body side connector (117) is connected to the chuck side connector (44) as shown in FIG.

In Figure 22, (u8) is the X-Y-θ table (87
) is a table standby position detection sensor that detects the standby position on the supply conveyor section (2> side.) This sensor (118
) may be used to 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 chuck ejection table <10> is also provided with ejection table guides (119) on both sides for guiding the movement of the chuck (5> that has been pushed out from the θ table (90) and moved).

The chuck ejection table (10) also has an engaging pawl (123) that can swing around a support shaft (121) and is always biased counterclockwise in FIG. 12 by a spring (122). The engagement claw (123) is provided with the ejection table (10).
) engages with the inner wall of the base of the chuck (5) that is allowed to be transferred onto the
The chuck (5) is prevented from returning in the direction of the chuck positioning unit (4>. Also, the chuck ejection table (10) is provided at a position to detect the chuck base (24), and the chuck (5) is ) to detect the presence or absence of the chuck detection sensor (1
24) is provided.

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 to rotate the X camera screw shaft (128) to move in the X direction along the X camera guide (129) via the nut (129). A Y camera screw shaft (132>) which is driven and rotated by a Y camera drive motor (131) is attached to the X moving body (126).
The recognition camera (12) attached to the X nut body (133) that fits into the
32) moves in the Y direction to recognize the chuck type identification hole (40), the position of the substrate (20), and the position of the screen plate (144) to be described later.

A stopper cylinder (136) is further attached to the X-nut body (133) so as to expand and contract the rod (137) in the vertical direction, and a stopper cylinder (136) is attached to the stopper pin holder (138).
> via the printed circuit board (2) of the chuck positioning section (4).
The stopper pin (139) that regulates the rod (13
7) are connected at the tip. The stopper pin (13
9) is a Y nut body (1) due to the operation of the cylinder (136).
33) 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 holder (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 the connecting plate (150).The squeegee mount (
149) has a stopper (151) and a stopper (152).
) is provided, and the stopper (151) is a stopper bolt (153) provided on the screen base (142).
The stopper (152) is in contact with the screen mounting base (1
45), and the screen mount <145) and the squeegee mount (1
49> relative to the screen base (142) in the vertical direction 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 to the engagement port 1-(159) provided on the screen mount (145>) as shown in Figure 30, thereby connecting the screen mount (145) and the squeegee mount (149).
> is connected to

A support (161) is erected on the screen base (142), and a support shaft (162) at the top of the support (161) and a support shaft (163) provided on the squeegee mount (149) are connected. Screen upper and lower cylinders (164) are installed between them so that they can rotate 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 (149).
) and the screen mount (145) are connected, the screen mount (145) is operated by the cylinder (164).
145) also swings together with the squeegee mounting base (149).

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 squeegee belt (172), which is stretched between the drive pulley (170) and the driven pulley (171), rotates, causing the belt (172) to be decelerated and transmitted to the drive pulley (170). ) attached to the squeegee stand (
167) moves. The squeegee stand (167) is provided with a light shielding plate (173), and when the origin detection sensor (174) detects the light shielding plate (173), the squeegee stand (167) is equipped with a light shielding plate (173).
67) is detected.

The squeegee stand (167) has two opposing wooden squeegees (1
75) is guided by a squeegee up and down guide (176) and is mounted to be movable up and down by the operation of a squeegee up and down cylinder (177). As the squeegee descends and moves as shown in FIGS. 32 to 39, paste solder (17
8) is printed on the printed circuit board (20) on the X-Y-θ table (87) through a pattern hole drilled in the center of the screen plate (144).

The base (91) supports the screen base (142) and moves it up and down to attach the screen plate (144> and the printed circuit board (2o)
) are provided with four ball screw shafts (179) for bringing them into contact with each other and separating them from each other. The screen vertical drive pulley (181) is rotated by the drive of the screen vertical motor (180).
Slip belt (182) and screen upper and lower driven pulley (1
83) to rotate the screen vertical movement shaft (184). The rotating shaft (184) is provided with an ohm (185), which engages with the ohm wheel (186) provided on the screw shaft (179), and the rotating shaft (tg4)
) rotates the ball screw shaft (179). A bevel gear (187) is provided on the rotating shaft (1B4), 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 shaft (184) is transmitted to the ball screw shaft (179) on the opposite side in FIG. 26 by a similar structure.

In this way, the nut (189) provided on the screen base (142) is fitted to the rotating four-wood ball screw shaft (179), and the screen base (142>) is connected to the base (91').
The screen moves up and down along a screen up and down guide (190) provided in the screen. The screen up and down motor (180) is
When the screen plate (144) is separated from the printed circuit board (20) after the paste solder (178) has been applied, the paste solder (178) is not left on the end face of the pattern hole of the screen plate (144). A servo motor or pulse motor is used to raise the screen plate (144) at a low speed. Next, the cleaning section (14) will be explained. Figures 40 to 46
In the figure, (192) is a leaning unit that can move below the screen plate (144) in the X direction guided by the X guide rail (93), and is connected to the belt (194) by the belt joint ('193). has been done. The belt (194) is connected to the cleaning section motor (195).
) Drive pulley (196) and driven pulley (1
97), and the cleaning unit (192) is moved by rotation of the motor (195). (
198) is a cleaning origin detection sensor that detects the origin of movement of the cleaning unit l-(192) in the X direction.

The cleaning unit 1-(192> is provided with a paper supply roll (200) for winding cleaning paper (199) with its terminal end fixed.
Cleaning paper (199) supplied from 0) is wound around a paper feed detection roll (201), then wound along the surface of a cleaning roller (202), and then wound around a take-up roll (2).
03).

(205) is a winding motor, and a torque limiter (205) is a winding motor.
06) to rotate the take-up drive pulley (207),
The take-up roll (203) is rotated via the take-up belt (208) and the take-up driven pulley (209). The cleaning paper (199) is fed to the end, runs out of material, and the take-up roll (203) stops rotating, causing the torque limiter (
When a predetermined load is applied to the torque limiter (206), the torque limiter (206) is cut 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 so that the take-up 2O-6) is not cut. The supply roll (200) is pinched with moderate force.

The cleaning roller (202) is provided at the tip of an arm (217) that can swing around a support shaft (216), and is moved up and down by the operation of a roller up and down cylinder (21B). Since the part is connected to the arm (217) via the spring (220), the cleaning roller (20
2) moves up and down. With the roller (202) rising and the paper (199) in contact with the lower surface of the screen plate (144), the cleaning unit I-(192) moves to automatically clean the lower surface of the screen plate (144). Cleaning is performed.

(222) is an actuator that can swing around a support shaft (223), and is biased counterclockwise in FIG. It holds the cleaning paper (199) wound around the winding, and its position is determined by the winding diameter. (226) is a paper-out warning switch, and the winding of the cleaning paper (199) = 22 = the winding diameter is determined. actuator (222)
is turned "ON" and outputs a paper-out notice signal.

Next, the control system will be explained.

In FIG. 47 and FIG. 48, (229) is a CPU that controls various operations related to the printing operation of the printed circuit board (20) of the screen printing machine <1) based on the information stored in the RAM (230). This is done according to the program stored in 231>.

(232) is an interface and an operation unit (15);
In addition to connecting the recognition camera (12), CRT (233), and various sensors, the main unit side connector (117,)
Signal 1 line (235) and signal 2 line (235) arranged in
236), signal line 3 (237') and common line (23g) are connected. The potential of the common line (238) is set to a low potential "L". The line (235>(
236), (237), and (238) are connectors (117), respectively.
) Detection 1 pin (235A), Detection 2 bin (
236A), the third detection pin (237A), and the common supply pin (238A). (239) is a drive circuit.

The RAM (230) has one print operation for the board (20).
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 signal is output, and a paper-out notice counter (242>) is provided.
After the continuity data in Figure 9, the identification hole data in Figure 50, and the paper-out notice signal are output, the paper-out notice counter (
242) is set and stored. (243) is a print counter for manual cleaning. "Chuck 1" in FIGS. 49 and 50 corresponds to chuck type "1", and "chuck 2" corresponds to chuck type "2".

Chuck side connector (44) has 1 signal pin (244)
, signal 2 pin (245), signal 3 pin (246) and common pin (247) are provided, and the main body side connector (11
7) For connection with each detection pin 1 (235A)
, the detection 2 bin (236A), the detection 3 pin (237A) and the common supply pin (238A). The chuck connector (44) in FIG. 47 is of chuck type "1", and the common pin (247) and signal 2 pin (245) are short-circuited. Chuck connector in Figure 48 (44)
is of chuck type "2" and is a common pin (247)
and signal pin 3 (246) are short-circuited.

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

The operation unit (15) has a numeric keypad (249) for inputting data.
), a cursor key (250), a SET key (251) used for selecting the CRT (233) screen, etc.
Teach key 252 to enter NC data setting mode
), a manual key (253) for switching to manual operation mode such as returning to the origin, a single movement key (254) for switching to automatic operation mode, and a start key (255) for starting operation.
), an operation key (256) for starting setup change operations, etc.
), and a stop key (257) for stopping the operation.

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

First, when you press the teach key (252), the CRT (233)
The screen displays NC: DATA as shown in Figure 51.
The INFORMATION screen will appear. Next, operate the cursor key (250) to set the cursor (258) to 'PCB-002J, which is the type of board you want to set, and press the SET key (251).The screen of the CRT (233) will be displayed for setting each data. 0PERATION DAT
A The 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.

"rEDITING" indicates the board type currently being set. 'P
CB 5IZEJ is data indicating the size of the board (20) in the X direction and Y direction in units of "m", and 'PR
I NT I NG (SI NGLE/D.

UBLE) SELECT specifies whether the printing operation is a round trip or one way operation, and "1" indicates a reciprocating operation. 'CHUCK TYPE' is Chuck (5
) shows the chuck type depending on the method of fixing the substrate (20), where ``rl'' is the chuck type of the mechanical clamp horizontal holding type described above, and ``r2'' is the chuck type of the vacuum suction type.

'5QUEEGEE PR'INT AREAJ is data indicating the printing range of the paste solder (178) in the X direction by the squeegee (175), and 'L+J' prints the distance from the center of the screen board (144) to the squeegee origin direction. Set the starting position in units of -4.
-* and + indicate the distance from the center of the screen plate (144) to the opposite direction of the squeegee origin as the printing end position.
” unit. As a result, the printed circuit board (20
) It is also possible to print only a part of the text.

'5QUEEGEE 5TROKE 0FFSET
1" is the screen board (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)
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 "-". '5QUEEGEE 5
TROKE 0FFSET 2J is a squeegee (17
5) There is a pair of squeegee (1
Place the squeegee (175) opposite the paste solder (
178) is the distance data for moving to the gathered position, and is set in units of m. rSQUE
EGEE 5PEED is data indicating the moving speed of the squeegee (175) when printing the paste solder (178), and is set in the unit of "TIII/SeC".

'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 up and down motor (180), and is rITllTl/SeC.
It is set in units of. 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 hole of the screen plate (144) or the viscosity of the solder paste. In the case of this embodiment, Q,
It can be set in the range from 5 mm/see to 1.4 T1 ml/see.

' CLEANING AREAJ is data for setting the cleaning range of the lower surface of the screen plate (144) by the cleaning roller (202), and is data for setting the cleaning range of the lower surface of the screen plate (144) by the cleaning roller (202).
The setting is "rSQUEEGEE PRINTAREA"
The same is true for . 'CLEANING ROLL
ER5PEEDJ is data indicating the moving speed of the cleaning roller (202) during cleaning operation.
It is set in units of 1In/sec. 'PAPER
FEED QUANTITYJ is cleaning paper (
This data 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 step 202) is completed, and is set in units of "-".

You can set the number of times to print.

'AUTOMATIC CLEANING C0UNTJ
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. If "O" is fully set, the timing of manual cleaning is not specified based on the number of automatic cleaning operations.

' PCB PRINTING C0UNTJ is data that specifies the timing of manual cleaning of the bottom 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.
If "0" is set, the timing of manual cleaning is not specified based on the number of times the board (20) is printed.

Note that the number of times the squeegee (175) is moved may be set and counted by the printing counter (243) every time the squeegee (175) is moved. 'PCB 003J (
7) NC data 0>8 constant The setting is performed in the same manner as shown in FIG.

The operation of the above configuration will be explained below.

First, the type of board we will be printing on is PCE-00.
The operation of setup changes to accommodate 2J will be explained. When the teach key (252) is pressed, the CRT screen displays the screen shown in FIG.
It can be seen that it corresponds to 001.

First, the worker presses the screen board (144) of the printing department (6).
Replace with one compatible with 'PCB-002J. Then, loosen the screw (27) of the movable wall (21) of the chuck (5) and move the movable wall (21> along the guide rail (25) and guide rod (26) to remove the NCDA of PCB-002.
Y direction f7) stored in TA PCB 5IZE”7
The interval between the tilt rails (23) is set to match 0aJ.After this, the operator places the chuck (5) on the chuck supply table (68).

At this time, the chuck (5) is in a position where the chuck base (24) is regulated 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). will be placed on. At this time, the chuck detection hole (43
) is detected by the chuck detection sensor (86).

Next, while the screen shown in FIG. When you press , the setup change operation shown below starts.

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) is swung as shown in Figures 17 to 18 to unlock the Z-chuck (5) from the θ table (90), and the connector connecting cylinder (115) operates to connect the chuck side connector of the chuck (5). (44) and the main body side connector (117) of the table (90) are separated 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 rodless cylinder (72) operates, the outer pressing piece (70) moves to the right in FIG. 12 and engages and presses the chuck base (24), so the chuck (5) 71). At this time, as the stopper swing plate (79) moves to the right, the taper at its tip engages with the stopper swing roller (85),
The stopper (83) rotates clockwise around the spindle (82) in FIG. Guide (1
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 suppressing piece (69) is adjusted to the chuck base (
24), it swings downward and escapes, returning and
When the base (24) is released from the engagement at the end,
It is swung upward by a spring (not shown) and becomes in a state □ in which the base (24) can be suppressed as shown in FIG. Also, the rodless cylinder (72) has returned completely and the stopper swing plate (72) has returned completely.
Even if the chuck (5) does not engage with the stopper swing roller (85), the chuck (5) will not engage with the chuck engagement roller (84).
Since the stopper (83) is held down, the stopper (83) keeps swinging downward.

Then, when the cylinder (72> is operated in the j direction (to the right in Fig. 14) again, the inner suppressing piece (69) engages with the base (24) and presses the chuck (5>), as shown in Fig. 15. Move to the position. At this time, first move the X-Y-θ table (87)
The chuck (5) of "Chuck type r2" on the top is X-Y
- It is pushed by the chuck (5) on the θ table (87) and is ejected to the chuck ejecting table (10).

When the chuck (5) moves on the chuck ejection table (10), the engagement claw ('123) has its taper aligned with the base (
24) and swings downward, but the chuck (5)
) 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 chuck (5)
) attempts to move toward the X-Y-θ table (87), the engaging claw (123) engages with the base inner wall (46) to restrict movement of the chuck (5).

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

Next, the cylinder (112) and the connector connecting cylinder (
115) operates to connect the chuck 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, and the lock lever (11
0) from the state shown in Fig. 18 to the state shown in Fig. 17,
Fix the chuck (5) to the X-Y-θ table (87). The chuck (5) is always stopped at a predetermined position by the operation of the rodless cylinder (72).

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

Main unit side connector (117) and chuck side connector 44
) is connected, signal 1 of the main unit side connector (117)
The line (235>, signal 2 line (236), signal 3 line (237) and common line (238) are the signals of the chuck side connector (44) via the bins (235A), (236A), (237A), and (238A), respectively. 1 bottle (24
4), connected to signal 2 pin (245), signal 3 pin (246) and common bin (247).

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

Since the common line (238) is at "L" potential, the potential of signal 2 pin (245) is also "L", but signal 1 bin (244) and signal 3 pin (246) are in an open state. It becomes. For this reason, one signal line (235
) and the signal line 3 (237) are also open at potential rH,
, and the CPU (229) is connected to the interface (2
11.32), signal 1 line (235), signal 2 line (236), and signal 3 line (237) in this order. , r
Detect O,9 "1" signal. CPU (229)
converts this result to Chirtsuk species “1” in RAM (230).
．． Since they match, it is determined that the chuck (5) has been replaced correctly, and the sensor, load, etc. of the chuck (5) are initialized by being energized through the connector.

Next, a setup change operation is performed in which the type of replaced chuck (5) and the width between the chuck rails (23) are checked using the recognition 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 nano 8 body (133). It moves and stops above the chuck type identification hole (40) of the chuck rail (23>) of the fixed wall (22).

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 chuck type 11" and the diameter of the identification hole (40) is "0.7
m1II'', but when it is recognized that it is 0.71111+1J, the PCB specified by the NC data is
-002, since the chuck type is 11J, RA
According to the identification hole data stored in M (230>), the diameter of the negotiation hole (40) is 0.7aJ, so confirm that they match.The replaced chuck (5) is as specified. When it is determined that this is the case, the recognition camera (12) detects the identification hole (40
＞Move to the top. Then, the identification hole 40> is imaged and its position within the recognition camera drive section (11) is recognized.

Then, the position of both recognized identification holes (40) is compared with 1 m from the position of both recognized identification holes (40), and if it is within an acceptable range, the recognition camera (
The check regarding chuck (5) by step 12) ends.

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

First, the screen upper and lower cylinders (164) are operating in the retracting direction, and only the screen mount (145) is placed on the screen base (142), but the squeegee mount (167) is 143) as a fulcrum as shown in FIG. 28, the recognition camera (12) moves in
) is recognized as the position of the recognition mark (not shown) attached. 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) come 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. 30, and the engaging pole l- (159) fits into the engaging groove (158), thereby attaching the squeegee. The stand (149) is integrally formed with the screen mount (145). In parallel with these operations, the board type "PCBO" being conveyed along the conveyor width of the supply conveyor section (2) and the discharge conveyor section (8)
Y stored in the NC data of the O2J board (20)
It is automatically changed according to the direction size '7Qmm'.

In this way, the setup change operation is completed.

Next, the printed circuit board (pace to 20〉) and solder (17
The printing operation 8) will be explained.

As mentioned above, when the setup change to 'PCB-002J is completed, when the operator presses the automatic key (254) and the start key (255), the X motor (94) rotates and the X-Y
The -θ table (87) moves to the left side in Figures 2 and 3, and the supply side gear (31) of the chuck (5) is transferred to the transmission gear (63) of the supply conveyor section (2) as shown in Figures 8 and 9. Engage as shown.

Then, the supply side motor (49) rotates and the drive pulley (
The supply belt (57) rotates via the transmission belt 50), the transmission belt 52), the transmission pulley 51), and the belt drive boot 53), and the printed circuit board (20) is conveyed. The rotation of the supply belt (57) causes the gear drive pulley (60) to rotate, the drive gear (62) to rotate, and the transmission gear (63) to rotate.
The supply side gear (31) is driven via the. As a result,
The pulley (28) pivoted on the gear (31) is rotated, the chuck bell I-(30) is rotated, and the supply belt (57) is rotated.
The board (20) that has been transported to is transported.

When the feeding and conveying operation of this substrate (20) is started, =3
9- PCB 5 in NC data in RAM (230)
IZE's X data "100. X camera drive motor (
127) and the X camera drive motor (131) to move the stopper pin (139) to a position where the center of the substrate (2o) is stopped at the center position of the chuck (5) in the X direction. That is, from the center of the chuck (5> in the X direction) to the printing section (
6) At a position 5011111 away from the side, insert the stopper pin (1
39) is moved. and stopper cylinder (136
) to lower the stopper pin (139).

In this way, when the printed circuit board (20) is conveyed to the chuck belt (30), the board (2o) comes into contact with the stopper pin (139) and is stopped, and the board sensor (140) (20), and based on this detection signal, the CPU (229) stops the supply motor (49), and the rotation of the chuck belt (30) is stopped.

Next, the chuck (5) fixes the printed circuit board (20) which has come into contact with the stopper pin (139) and is stopped on the chuck belt (30>), and this operation will be explained.

First, the back Arab pin (
Backup pin plate (41) with a large number of
2) rises and the substrate (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) inside the chuck (35) moves inside the chuck (5), and the chuck rail (23) to which the roller (36) is fixed moves to the guide rail (2).
5) in the direction of narrowing the chuck rail (23) interval, and grips and fixes the printed circuit board (20). When the fixing operation of the board (20) is completed, the X motor (94)
Due to the rotation, the X-Y-θ table (87) moves in a direction away from the supply conveyor section (2>).

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

That is, the rotation of the X camera drive motor (127) and the X camera drive motor (131) moves the recognition camera (12) onto a positioning mark (not shown) on the board (20), and the position of the board (20) is recognized. . Based on this recognition result and the above-mentioned recognition result of the position of the screen plate (144), the X-
The Y-θ table 87) is rotated by the Y motor (94) along the X guide rail (93) in the X direction by the rotation of the X motor (94).
97) rotates the Y guide rail (toe) in the Y direction.
It moves along the screen plate (144) and stops at the bottom of 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 solder is applied at the center of the screen plate (144) is to further improve accuracy against printing misalignment. Chuck (5) as mentioned above
Although it is possible to position the substrate (20) at the center of the screen plate (144) even if the substrate (20) is not fixed at the center of the When fixed, the end of the chuck (5) will hit the mounting base (145) of the screen plate (144), so the substrate <20) is fixed at the center of the chuck (5).

Next, the screen vertical motor (180) rotates, and the screen lower rotation shaft (184) rotates via the screen vertical drive pulley (181), belt (182), and screen vertical driven pulley (183). the axis (184
) The worm wheel (186) that engages with the ohm (185) provided in ) rotates, and the ball screw shaft <179)
rotates. Then, the rotating shaft provided with the bevel gear (18g) 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, a printing operation of paste solder (178) onto the substrate (20) is performed by moving the squeegee (175), and this printing operation will be explained.

'PRINTING (SINGLE/D) of NC data
OUBLE) SELECT is 11'' and =43-, so the reciprocating printing mode has been selected.

The printing motor (168') rotates and the drive pulley (170
), driven pulley (171), squeegee belt (172)
The squeegee stand (167) moves from the origin position at high speed through the substrate (20) shown by the solid line in Fig. 32 to be printed.
It stops at the position shown by the solid line in FIG. 32, which is the position immediately before. 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 located at 5QUEEGE E P from the center position of the screen plate (144).
rSQUE to RI N T A R E A L, J
EGEE 5TROKE 0FFSET 1. Add '5QUEEGEE 5TROKE 0FFSET
The stop position is a distance obtained by subtracting 2J, that is, 60 mm away from the squeegee origin (to the right in FIG. 32).

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) 5QUEEGEESPEE of NC data up to the position indicated by the solid line in Fig. 34.
Speed specified by DJ' 60111111 /s
Move while imprinting the paste solder (178) onto the board (20) with the QC. The stop position of the squeegee (175) indicated by the solid line in FIG.
I N T A R E A L x J to rSQUEE
GEESTROKE 0FFSET IJ is added to the distance, that is, r9(lnwn), which is the position where the squeegee stops on the opposite side of the origin.

In this way, paste solder (178>) on the printed circuit board (2).
Printing in the forward direction to 0) 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 squeegee moves at high speed to the origin side by '3Q1ml indicated by EGEE 5TROKE 0FFSET2J, 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). and,
The left squeegee (175) is lowered as shown by the solid line in FIG. 37 by the operation of the cylinder (177).

46- 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, the rotation of the print motor (168) moves the squeegee reference position from the center of the screen plate (144) toward the squeegee origin.
IJ ni'5QUEEGEE 5TROKEOFFSE
The squeegee (175) moves at a speed of '60 + mn/seC' specified by the NC data 'r5QUEEGEE5PEED' to the position indicated by the solid line in Fig. 38, which is the distance obtained by adding T IJ, that is, the position 90 meters away. and paste solder (178) to the printed circuit board (20)
The printing in the backward direction is completed, and the printing operation of the paste solder (178) on the board (20) is completed.

At this time, the print counter (240) counts the IJ. Thereafter, the squeegee (175) rises as shown in FIG.

Next, the screen up and down motor (180) reads the NC data '5CREEN 5EPARATE 5PEED'.
The screen base (142) is raised,
The screen plate (144) is attached to the paste solder (178) of the screen plate (144) at a speed of '0, 7 mm/see J as indicated by the data from the board (20).
It rises to the position shown in FIG. 26 and leaves without remaining on the end face of the pattern hole bored in the screen plate (144) due to friction. At this time, after rising the distance to completely leave,
It 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)
The rotation moves toward the discharge conveyor section (8), and the discharge side gear (32) is engaged 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), releasing the substrate (20), and the backup bin (41) moves down to place the substrate (20) on the chuck belt (30>). After this, the discharge conveyor section (8
) begins to rotate, the chuck belt (30) moves the substrate (
20) and transferred to a discharge conveyor section (8), and the discharge conveyor section (8) discharges the substrate (20) to a downstream device.

Next, the X-Y-θ table (87) is moved toward the supply conveyor section (2) by the rotation of the X motor (94), and the supply side gear (31) is moved toward the supply conveyor section (2) in the same manner as described above. is engaged with the transmission gear (63). Then, the supply side motor (4
9) rotates and the supply belt (57) feeds the next substrate (20>
The substrate (20) is transferred onto the chuck belt (30).

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) lowers and completes the movement from the position shown in Figure 39 to the position shown in Figure 32. Immediately, the right squeegee (175) lowers and the rest is carried out in the same manner as described above. Printing is performed and the print counter (240) is incremented to "2".

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

In this way, the number of times the substrate (20) is printed is counted by the print counter (20).
40) and the NC data 'AUTOMATI C
When the board (20) is discharged by the discharge conveyor section (8) after reaching "rlo set in CLEANI NG I NTER#-ALJ", the screen plate (144
) Automatic cleaning operation of the lower surface is performed. The print counter (240) is cleared when it reaches the set value.
”. 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 to the supply conveyor section (2> side) 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) is the X-Y-θ table (
87), the cleaning origin detection sensor (198) located below the discharge conveyor section (8) as shown in FIG.
The cleaning unit <19> was waiting in a position where the X-Y-θ table (87) detected by
2> Cuff Lining Unit The rotation of the belt (194) caused by the rotation of the motor (195) moves the belt (194) along the X guide rail (93) to below the screen plate (144). If the table standby position detection sensor (118) does not detect the X-Y-θ table (87), the cleaning unit (118)
92) is constructed so that it does not move in the X direction, and the X-Y-θ table (87) is constructed so that it does not 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 (21g) operate and the arm (
217) swings upward about the support shaft (216), and the roller (202) is wrapped with cleaning paper (199).
comes into contact with the lower surface of the screen plate (144) as shown in FIG. 55 while being biased by the spring (220). The contact position of the roller (202) with the NC data is '0LEAN■
NGAREA'' specifies rL, = 65J, so the discharge conveyor section (8
) side by a distance of ``6511'0]I''.

The cleaning part motor (195) rotates with the roller (202) moving upward and cleaning paper (199) in contact with the screen plate (144), and the NC data (7
) 'CLEANING ROLLER5PEED' is set at a speed of ``50W [l/sQc''.
) runs, and the cleaning paper (199) wipes the lower surface of the screen plate (144). The roller (20
2) is the NC data 'CLEANINGA RE' from the center of the screen plate (144) to the supply conveyor section (2) side.
The motor (195) stops after traveling from the center of the screen plate (144) to a distance specified by 'A Lt' of '55+111+1J'.

Here, the cleaning paper (199) wound around the roller (202>) is taken up on the take-up roll (203) by rotation of the take-up motor (205).The cleaning paper (199) is wound on the supply roll (200). The paper feed detection roll (201) is rotated without slipping and wound onto the take-up roll (203) via the roller (202). Sensaku 215l-3) detects the slit (212) of the attached disk (211) and reads the NC data 'PAPERFEED'.
The feed amount set in QUANTITYJ is '15mm,
When it is detected that the winding motor (205) has been fed, the rotation of the winding motor (205) 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 remove the roller (202).
is the discharge conveyor section (8) from the center of the screen plate (144).
) side reaches a distance of 65 IT [m]. Then, the roller upper and lower cylinders (218) operate, the arm (217) swings downward, and the roller (202) moves toward the screen plate (144). ) descend away from the bottom surface.

- Next, use cleaning paper (1999) in the same manner as above.
) is wound up on the take-up roll (203), the cleaning unit (192) moves to a position where it is detected by the cleaning origin detection sensor (19g) on the discharge conveyor section (8) side.In this way, the automatic cleaning operation is performed. When the cleaning is completed, the cleaning counter (241) counts 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 by the chuck rail (23) in the same manner as described above, but after the automatic cleaning operation is completed, the cleaning origin detection sensor (1
98) detects the cleaning unit (192), the X-Y-θ table (87)
93) below the screen plate (144),
The substrate (20>) is positioned, and 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 value set in NING COUNT reaches 112'', an operation for manual cleaning is performed.

That is, when the cleaning counter (241) reaches "12" and the cleaning unit <192) moves and is detected by the cleaning origin detection sensor (198), the connecting plate (150) engages with the engagement bolt (159). With the squeegee mount (149) and screen mount (145) connected to the body, the screen up and down cylinder (164) operates, and the screen plate (144) and screen base (1
42> is opened as shown in FIG. 29, and the cleaning counter (241> is cleared. After this, although the power is on, all motors and cylinders are not driven incorrectly and their current positions are maintained. In this case, the next substrate (20) is fixed to the chuck (5) and the recognition camera (1
It is assumed that recognition according to 2) has been completed. Then, the yellow lamp of the tower light (16) flashes to notify the operator that it is necessary to manually clean the lower surface of the screen board (144). At this time, CRT (2
33) also displays that the manual screen board (144) is in a waiting state for cleaning.

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

Further, the operation unit (15) does not accept any operations other than checking the CRT screen or turning off the power. In this state, the operator manually wipes and cleans the lower surface of the screen plate (144).

When cleaning is completed, the operator closes the safety door (17) and presses 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 upper and lower cylinders (164) to move the screen plate (
144) to the screen base (142).
Bring it to the state shown in the figure. However, it is assumed that there is no substrate (20). Then, the X-Y-〇 table (87) moves below the screen plate (144), the positioning as described above is performed, and the printing operation is performed.

The above operations are repeated, but 'PCB-002
” When the printing of the board (20) is completed, the screen printing machine (1) is stopped. When the screen printing machine (1) is stopped, the printing motor (168
) and all other drive sources 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>) and moves the screen board (144) to "PC-B-003J (7)" as described above.
Mo (1) MM u e, 'PCB-003' Jf
H: The chuck (5) with the chuck rail width adjusted to '200TIIIl is placed on the chuck supply table (6
8), the screen of the CRT (233) in Fig. 56 shows "PCB Q O3" as shown above.
3 Place the cursor on J (258) and press the operation key (256).
). Then, the same setup change operation as in the case of 'PCEI-002' is executed.

In this case, first the connector connecting cylinder (115) operates and the chuck side connector (44) connects the main body side connector (1
17), the chuck side connector in this case (
44), as shown in Figure 48, the common bin (247) and the signal bin (245) are short-circuited, and the other bins are open, so the signal 1 line (235) and the signal 2 line (
236) and signal line 3 (237) are “1°”1j”
Since it is OJ and matches the data shown in FIG. 49 of 'Chuck type r2 shown by NC data of PCB 003J', the sensor, load, etc. of the chuck (5) are energized through the connector and initialized.

Then, the chuck type identification hole (40) is recognized by the camera (12).
) is recognized and the hole diameter is '1. Qmm" and chuck type r2. indicated by the NC data of PCB 003J. Confirm that the data match the data shown in FIG. Thereafter, the setup change operation continues in the same manner as in the case of 'PCB-002'.

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

'The board (20) of PCB-003J is shown in Figures 32 to 3.
This is shown by the two-dot chain line in Figure 9, and is RAM (230
) NC data rSQUEEGEE PRI NT
AREA” KarL, -150J, rL, = 150J
Therefore, the printing motor (168) rotates and the squeegee (175) moves at high speed and stops at the position shown by the dotted line 2-58 in FIG. Next, 2 in Figure 33
The squeegee (175) descends as shown by the dotted chain line.
5QUEEGEE of the NC data up to the position shown by the two-dot chain line in FIG.
5PEEDJ '80Tl1m/sec' while pressing the screen plate (144), move the paste solder (178) onto the board (shown by the two-dot chain line).
20).

Next, the descending right squeegee (195)
5QUEEGEE of NC data by moving upward as shown in the figure.
5TROKE 0FFSET 2. It moves at high speed for a distance indicated by '3QITnTIJ' and stops at the position indicated 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
RINT AREAJ' L+=15 o.

From this, the speed shown by '5QUEEGEE 5PEEDJ' is reached to the position shown by the two-dot chain line in Fig. 38.
The printing of the paste solder (178) in the backward direction is completed by moving at 80 nTl1/SeCJ. Then, as shown by the two-dot chain line in Fig. 39, the squeegee (175)
will rise.

Then, as in the case of 'PCB 002J,' the screen plate (144) rises and separates from the substrate <20), and the substrate (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, 'AUTO of NC data of PCB-003J
10th board (20), which is the number of printed boards set to MATICCLEANING INTERVAL.
When the printing operation of paste solder (178) is completed, 'CLEANING AREAJ data rL, =
165. ,' L! = 165'' range as 'C
The speed indicated by the data of "LEANING ROLLER5PEED" - 59 = '701111+1/See' and 'PCB-0
Automatic cleaning is performed in the same manner as in the case of 02J.

Then, set “5” to PCB PRINTING COUNT.
Since "0" is set, the counter (243) is "0".
50. The 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 (1999
) is wound up on the take-up roll (203), and the supply roll (2
The winding diameter of the paper (199) wound around the paper (199) gradually decreases. Supply roll (200) (7) Paper (1
When the winding diameter of the spring (225) decreases, the actuator (222) rotates about the support shaft (223) as a fulcrum, and the advance notice switch (226) moves to the position indicated by the two-dot chain line in Fig. 46. ) to output a paper out warning signal.

The CPU (229) turns on the yellow lamp of the tower light (16) and turns on the CRT (
233) displays a paper-out notice on the screen. and,
The number of times the automatic cleaning is possible is set to "5" in the paper-out notice counter (242). Thereafter, if the paper is not replaced, the counter (242) is decremented every time automatic cleaning is performed. At this time, the possible number of times stored in the counter (242>) may be displayed on the screen of the CRT (233).After the paper-out notice is issued, automatic cleaning is performed five times, and the counter (242) When this happens, the yellow lamp of the tower light (16>) will flash and the printing operation will stop.At the same time, a paper out message will be displayed on the CRT (233) screen.At this time, the cleaning unit (192) will be placed in a position where it can be easily replaced. It is also possible to wait.

Next, the worker opens the safety door (17) and cleans the safety door (17).
2 = Replace the gupever (199) with a new one and then close the safety door (17). 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 (258) 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 (
In step 2), the printing operation described above is performed after the paper has been conveyed.

In addition, if the cleaning paper (199) is replaced while the paper out warning is being displayed, the operator presses the stop key (257>) to stop the printing operation. The board (20
) is discharged to the discharge conveyor section (8), the screen printing machine (1) stops. Then, the cleaning paper (199) is replaced in the same way as after the full door (17) is opened and the paper out display is completed, and the automatic printing operation is restarted. In addition, paper runout can be detected when the cleaning paper (199) is wound up to the end and the end is fixed to the supply roll (200), so if it is pulled, the paper is attached to the output shaft of the winding motor (205). The torque limiter (206) is no longer able to receive the predetermined load and the take-up motor (205) idles, but the disk (211)
) does not rotate and the sensor (213) does not detect the feed amount of the cleaning paper (199).

In addition, if the cleaning paper (199) is cut at any position without the dowel limit cutter (206), the paper feed detection roll (201) will not rotate and therefore the feed amount detection sensor (213) will not detect the paper. Although the winding motor (205) is not detected as being being fed, it means that the winding motor (205) is rotating. Or cleaning paper (199)
If the end of the paper (199) is not fixed to the supply roll (200) and the paper (199) is fed to the end, the feed amount detection sensor (213) will not detect that the paper is being fed, but the paper will continue to roll. 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, C
The PU (229) may determine that the cleaning paper (199) is out of material.

In addition, a preset number of times automatic cleaning is possible is stored in a paper-out notice counter (242), and each automatic cleaning operation is performed after a paper-out notice signal is output by turning the notice switch (226') ON. This may be done by subtracting the counter (242), or alternatively, the counter (242) may be set to 0 degrees and the counter (242) is incremented each time an automatic cleaning operation is performed after a warning signal is received. It is also possible to run out of paper when the number of cleanings allowed has been reached.

Furthermore, the number of times that the paper can be automatically re-leaned after the paper run-out notice is given is determined by memorizing the remaining distance of the cleaning paper (199) when the notice switch (226) is turned "ON", and by setting rPAPERFEEDQUANTITYJ. It may be calculated based on the amount.

Also, when replacing the chuck (5), the data of r CHUCK TYPE is rl in PCB-002.
However, the operator mistakenly placed the chuck (5) of chuck type R2 on the chuck supply table <68> and the chuck (5) of chuck type 11 was to be replaced. When the activation key (256) is pressed in this manner, the chuck (5) is transferred onto the X-Y-θ table (87) and then locked by the lock lever (110), which connects the chuck side connector (44) and the main body. The side connector (117) is connected. Then, the signal 3 pin (246) is r L , and the signal 1 pin (244) and the signal 2 pin (245)
Since the signal 1 line (235), the signal 2 line (236), and the signal 3 line (237) are open, the signals 'I J + 'I J + 'oJ are detected. Since the type of chuck is different from that of type 11, the CRT (233) screen displays that the chuck type of chuck (5) is different, and the red lamp of the tower light (16) is lit to notify the operator. The cylinder (112) and the cylinder (115) are operated to unlock the lock lever (110), and the chuck side connector (44) and the main body side connector (117) are disconnected. The operator removes the chuck (5) from the chuck discharge table (10).
Remove the chuck, place the chuck (5) of chuck type 1 on the chuck supply stand (68) again, and perform the setup layering operation described above to replace it with the correct chuck (5). If there is no function to check the chuck (5) depending on the electrical continuity state of this connector, replace chuck type 12'' chuck (5) when chuck type 11'' should be replaced as described above. Even if you replace the chuck (5), the recognition camera (12)
) when the chuck type identification hole (40) is recognized, the diameter is 'l, Qa, and the chuck type r1 to be replaced is
Since it is not 0.7mm, unlock it in the same way.
Disconnect the connector and notify the operator. Further, even if the chuck-to-rail spacing by the identification hole (40) does not match the substrate size of the NC data, the same operation as when the chuck type is 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 abnormality signal is output, the rodless cylinder (72) does not operate, and the chuck (5) replacement operation is not started. In addition, when trying to replace the chuck (5), the chuck (5) is still on the chuck ejection table (10).
) and the chuck (5) is detected by the chuck detection sensor (124), even if the actuation key (256) is pressed as described above for replacement, the rodless cylinder (72) will not work. It does not operate, and the chuck (5) replacement operation does not start.

Furthermore, in this embodiment, pins that are not connected to the roller 7-mon pin <247> of the signal 1 bin (244) to the signal 3 bin (246) of the chuck side connector (44) are connected to the chuck (5) during automatic operation. ) The output signals from the various built-in sensors are sent to the CP via the interface (232).
U (229), but immediately after the chuck (5) is replaced, these sensors etc. are not energized and are in an open state, but these pins (24)
4) The pins (246) to (246) may not be shared with signal transmitting pins, and the pins other than those short-circuited to the common pin (247) may be always left open.

Furthermore, in this embodiment, when replacing the chuck (5), the rodless cylinder (72) is driven to push out the chuck (5) using the inner pressing piece 69) and the outer pressing piece (70). Without using a drive source such as a rodless cylinder (72), first unlock the lock lever (110), remove the main body side connector (114) from the chuck side connector (44>), and then manually move the X- Y-
Pull out the chuck (5) on the θ table (87) to the chuck supply table (68) or chuck discharge table (10), place a new chuck (5> on the chuck supply table (68), and push it by hand to feed it. Base guide (71) and guide (10)
8) and slide it along the X-Y-θ table (87).
The chuck (5) can be replaced by placing it on top and locking it with the lock lever (110). However, in this case, it is possible to ensure that a stopper is provided for positioning the chuck (5) when the chuck (5) is pushed in by hand.

[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 machine with the safety door removed, Figure 3 is a front view of the printing machine with the safety door removed, Figures 4 and 7 are side views of the chuck, and Figure 5 is the chuck. , FIG. 6 is a plan view of the chuck, FIG. 8 is a front view of the supply conveyor section and chuck, FIG. 9 is a plan view of the supply conveyor section and chuck, and FIG. 10 is a plan view of the chuck and printing in FIG. 2. Figure 11 is a front view of the chuck supply unit;
12 to 16 are side views showing the chuck exchange operation, FIGS. 17 and 19 are front views of the chuck positioning section, and FIG. 18 is a front view showing the situation where the lock lever is released.
Fig. 20 is a front view showing the main body side connector separated from the chuck side connector, Fig. 21 is a plan view showing the main body side connector separated from the chuck side connector, and Fig. 22
23 is a plan view of the recognition camera drive section, FIG. 24 is a front view of the recognition camera drive section, FIG. 25 is a plan view of the printing section, and FIG. 26 is a plan view showing the X-Y-θ table. Figures 29 to 29 are front views of the printing section, Figures 30 and 31 are side views of the printing unit, Figures 32 to 39 are front views showing printing operations, and Figure 40 is a front view showing the cleaning unit. Figure, No. 41
45 and 45 are side views showing the cleaning section, and FIG.
The figure is a cutaway front view of the cleaning section, and Figure 43 is the fourth section.
1 is a side view with the supply roll and paper feed detection roll removed, FIG. 44 is a plan view of the cleaning section, FIG. 46 is a front view of the final cleaning section for explaining the paper out warning operation, and FIG. 47 is a control block diagram of the present invention, and FIG. 48 is a control block diagram of the present invention. FIG. 49 is a diagram showing conduction data, FIG. 50 is a diagram showing identification hole data, FIGS. 51 to 53, 56 and 57.
The figure shows the CRT screen, and Figures 54 and 55 show the X-
It is a front view of a Y-theta table and a cleaning part. (5>... Chuck (substrate support means), (20)
...Printed circuit board, (144)...Screen board,
(175)...Squeegee, (178)...Paste solder (coating agent), (229)...CPU (determination means)
, (235A)...Detection 1 pin (detection voltage input terminal), (236A)...Detection 2 pin (detection voltage input terminal), (237A)...Detection 3 bin (detection voltage input terminal), ( 238A)...Common supply pin (voltage supply terminal), (244)...Signal 1 bin (identification terminal)
, (245)...Signal pin 2 (identification terminal), (24
6)...Signal pin 3 (identification terminal), (247)...
・Common bin (detection voltage input terminal).

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 replaceable board support means by moving a squeegee through the screen plate, a detection voltage is supplied to the machine body. A voltage supply terminal and a plurality of potential detection terminals each detecting potential are provided,
The substrate support means has a detection voltage input terminal connected to the voltage supply terminal and a plurality of detection voltage input terminals short-circuited to the detection voltage input terminal in combinations depending on the type of substrate support means and connected to each of the potential detection terminals. identification terminals, and determining means for determining the type of the substrate support means according to a combination of potentials of the identification terminals.