Kapitel 5
Operation
5-15
©
EuroDok
05_Bedienen.fm
Druck 23.10.08
E1-II semiautomatic screen printer
System Manual
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Screen printing mode 1
After the foot switch is pressed, the table moves into the print area and is
raised. The rear squeegee is lowered and pressure is supplied at the set
level. The squeegee unit moves forwards, during which time printing
takes place on the PCB. After printing is completed, the table moves
down and out. The rear squeegee is raised and the front squeegee is
lowered. The squeegee unit moves to the rear, during which time flooding
of the stencil takes place.
Screen printing mode 2
After the foot switch is pressed, the table moves into the print area and is
raised. The rear squeegee is lowered and pressure is supplied at the set
level. The squeegee unit moves forwards, during which time printing
takes place on the PCB. After the first printing process the table remains
in position. The rear squeegee is raised and the front squeegee is low-
ered. The squeegee unit moves to the rear. During this time the stencil is
flooded. After flooding is completed the flooding squeegee is raised, and
the rear squeegee is lowered and pressure is supplied at the set level.
The same printing procedure takes place again. After the second printing
process, the table is moved down and out. The rear squeegee is raised
and the front squeegee is lowered. The squeegee unit moves to the rear,
during which time flooding of the stencil takes place.
Screen printing mode 3
Stencil printing is carried out with a steel squeegee. After the foot switch
is pressed, the table moves into the print area and is raised. The rear
squeegee is lowered and pressure is supplied at the set level. The for-
ward printing process is carried out. After this, the rear squeegee is
raised and the front squeegee is lowered. The squeegee unit moves to
the rear and a rearward printing process is carried out. After the printing
process, the separation process takes place according to the set parame-
ter. The separation motor slowly lowers the table. The table is then fully
lowered by the pneumatic system and is moved out. The front squeegee
is raised and the rear squeegee is lowered.
Stencil printing mode 3a
Printing mode 3a is identical to mode 3, except that at the end of the
complete printing cycle the rear squeegee is lowered and the front
squeegee remains lowered. This prevents gaps forming in the solder
paste as it heats up.
