Beisler 1265-4 - Manual (Page 17)

Operating Instructions Automatic Single-Head Serging Machine 1265-4 Beisler GmbH
B-7
B.2
Functions of the machine
Control, Fig. 5:
The control of the sewing pieces
along the sewing stop is affec-
ted by:
• the puller speed 4,
• the pressure that the contour
roller 3 applies to the se-
wing pieces.
The photocell 1 determines
the deviation of the fabric con-
tour 2 from the ideal routing at
the reflective film and readjusts
the speed of the puller 4 as re-
quired.
• If the sewing pieces are shif-
ted sideways away from the
stop, the puller speed is too
high,
• if the sewing pieces warp at
the stop, the puller speed is
too low.
The frequency for adapting the puller speed is set with the program con-
trol.
In addition, the contour roller 3, due to its orientation, pushes the sewing
material toward the stop. The lateral thrust depends on the pressure that
the contour roller applies to the sewing pieces:
• If the sewing pieces are shifted sideways away from the stop, the
pressure is too low,
• if the sewing pieces warp at the stop, the pressure is too high.
The required contour roller pressure is determined in sewing tests in
combination with the puller speed.
Fig. 5