Beisler 1360-4 - Manual (Page 17)

Operating Instructions Automatic Multi-Head Serging Machine 1365-4 Beisler GmbH
B-7
B.2
Functions of the machine
Control, Fig. 5:
The control of the sewing pieces along the sewing stop 5 is affected
by:
• the puller speed 6,
• the pressure that the contour roller 4 applies to the sewing pie-
ces.
The photocell 1 uses the reflective film 2 to determine the deviati-
on of the fabric contour 3 from the ideal routing and readjusts the speed
of the puller 6 as required.
• If the sewing pieces are shifted 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 4 pushes the sewing material toward the
stop 5 as a result of its orientation. 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 high,
• if the sewing pieces warp at the stop, the pressure is too low.
The required contour roller pressure is determined in sewing tests in
combination with the puller speed.
Fig. 5