2OM-1104-001.pdf - 第31页

(5) PCB Clamp Offset The backup table ascends to the position where a P .C.B. is chucked. It starts ascending again after the P .C.B. horizontal clamping unit has chucked the P .C.B. When thin P .C.B.’s are used and chuc…

1.2.3 PCB Backup

(1) Chuck Stage Select

Select the method to fix the P.C.B. on the table chute.

The specified data is used to determine the P.C.B. fixing method

of the P.C.B. positioning stage.

Backup Jig : This specifies the method which uses the backup

jig.

Backup Pin : This specifies the method which uses the P.C.B.

support pins.

Vacuum Plate : This specifies the vacuum pick-up system.

Select one of the options correctly according to the set-

tings of the mechanism section. Otherwise, the macine

will malfunction.

(2) PCB Warpage Protection

It can be selected whether or not the P.C.B. warpage protection

function should be used to correct the warpage of the P.C.B.

Select "ON" in normal cases.

When "OFF" is selected, transfer of overlapped P.C.B.’s

cannot be detected.

(3) Vacuum Release Mode

Select time when the picked P.C.B. should be released.

Before : The picked P.C.B. is released before printing operation.

After : The picked P.C.B. is released after printing operation.

Select "After" in normal cases.

When a P.C.B. has a lot of through holes and the machine per-

forms the printing operation with the P.C.B. being picked up, solder

paste may ooze out to the underside of the screen. In this case,

"Before" should be selected.

(4) Vacuum Rel. Wait Time [sec]

Set the waiting time during which the picked P.C.B. is released

and the backup table descends.

Unit: seconds

PCB Warpage Protection

Fig.3B24

Vacuum Release Mode

Before

Fig.3B25

Fig.3B26

Vacuum Rel. Wait Time

[sec]

0.0

0004-001 Chapter 1 2 7 AFU01EDTP

1.2 Operation Data

Chuck Stage Select

Backup Jig

Fig.3B23

(5) PCB Clamp Offset

The backup table ascends to the position where a P.C.B. is chucked.

It starts ascending again after the P.C.B. horizontal clamping unit

has chucked the P.C.B.

When thin P.C.B.’s are used and chuck errors occur, enter a value

as timing with which a P.C.B. is chucked and the backup table

starts ascending again and a value that represents the position

where the P.C.B. horizontal clamping unit starts to chuck the P.C.B.

Timing [sec] : Enter a value that represents the timing

with which the backup starts ascending

again after it has stopped.

Unit: seconds

Position [mm] : Enter a value that represents the

changed dimension based on the cur-

rent position.

Unit: mm

When a minus (-) value is entered, the

height for chucking start can be changed.

Bef.Clamp Bkup Spd. : The ascending speed of the backup table

can be set in the range of 10 steps (Full

Speed to 90 Down) before the P.C.B.

is clamped.

Unit: %

Aft.Clamp Bkup Spd. : The ascending speed of the backup table

can be set in the range of 10 steps (Full

Speed to

90 Down) after the P.C.B. is clamped.

Unit: %

(6) P.C.B. Stopper Offset Y [mm]

Set the offset in the Y direction of the stopper that is used to stop

the P.C.B. in the table chute section.

Unit: mm

When the offset is "0" (zero), the P.C.B. stopper is located at the

center of the P.C.B. end plane.

Specify the offset when there is a cutout, etc., at the center of the

P.C.B. end plane.

(7) PCB Cut Offset [mm]

When the P.C.B. has a cutout at its edge and must be positioned

against the P.C.B. stopper, enter the depth of the cutout in the text

box.

Unit: mm

0106-003 Chapter 1 2 8 AFU01EDTP

1.2 Operation Data

Fig.3B27

Timing [sec]

Position [mm]

0.00

+0.0

P.C.B. Stopper Offset Y

[mm]

+000

Fig.3B28

P.C.B. Cut Offset [mm]

000

Fig.3B28-1

Bef.Clamp

Bkup Spd.

Aft.Clamp

Bkup Spd.

Full Speed

1.2.4 P.E.C. Recognition

(1) P.E.C. Recog. Function

It can be selected whether or not the P.E.C. recognition function

should be used.

2PT. : The machine performs the tow-point recognition.

OFF : The machine does not perform the P.E.C. recognition.

One of the options ("OFF", "1PT.", "2PT.", and "3PT.")

can be selected. However, the machine perform the rec-

ognition only when "2PT." is selected.

(2) Center Recognition

It can be selected whether or not the machine should perform the

center recognition.

ON : The machine performs the center recognition.

OFF : The machine does not perform the center recognition.

When the center recognition function is used, a fiducial mark is

recognized once and the camera is moved to the position where

the recognized fiducial mark is located at the center of the visual

field. After that, the fiducial mark is re-recognized.

The positional accuracy is improved because the mark is recog-

nized at the center of the visual field (the spot of the lens with less

distortion).

(3) Fiducial Mark #1

X [horizontal] and Y [vertical]

Set the coordinates of the first fiducial mark.

Unit: mm

Code

Set the code No. of the first fiducial mark.

(4) Fiducial Mark #2

X [horizontal] and Y [vertical]

Set the coordinates of the second fiducial mark.

Unit: mm

Code

Set the code No. of the second fiducial mark.

PEC Recog. Function

OFF

Fig.3B30

Center Recognition

OFF

Fig.3B31

0004-001 Chapter 1 2 9 AFU01EDTP

1.2 Operation Data

X (Horizontal)

Y (Vertical)

000.000

Code

Fig.3B32

X (Horizontal)

Y (Vertical)

000.000

Code

Fig.3B33