Operation Manual

1.2 Short Description
The
DÜRKOPP 743-221
is a sewing unit for the automated sewing
single-point darts
with straight or curved seam form and for the
sewing of
pleats
.
•
The unit is equipped with a machine head in lockstitch execution.
•
A form set appropriate to the seam form holds and guides the
material.
•
The seam length control occurs, as desired, via a light barrier or
through programming.
•
Seam securing at the seam beginning and seam end through bar
tacking or stitch condensation in the material
•
Thread trimmming system: Controlled chain shears
•
Transport carriage drive via step motor.
•
The complete control of the sewing unit occurs via a
microcomputer. It assumes the control functions, monitors the
sewing process and signals operating errors and malfunctions.
•
Electronic thread monitor prevents a restarting of the sewing
sequence by thread breakage or used-up threads.
1.3 Technical Data
Machine head: Class 935 - 271 - 710
Needle system: 134 Serv 7
Needle thickness: 80 - 100
Yarns: 40 NeB, 65/2 Nm
Stitch type: Single-needle lockstitch
Number of stitches: Sewing: 3.800; 3.900; 4.000 - 4.800 / min
Bar tacking: 1 000 - 3 000 / min
Advance: 3 000 - 4 000 / min
Thread chain: 1 000 / min
Stitch length: Advance: 1,9; 2,2; 2,5; 2,8 mm
Normal seam: 1,9 - 2,8 mm
Seam tacking: 2,2 mm
Stitch condensation: 0,5; 0,8; 1,1; a. 1,4 mm
Sewing length: 45 - 150 mm
Folding table: 0 - 10°, adjustable
Operating pressure: 6 bar
Air consumption approx. 2 NL no blow cycle
per work cycle: approx. 12 NL with short blow cycle
Nominal voltage:
9880 743002
3 ~ 380 - 400 V + N, 50 Hz
9880 743003
3 ~ 220 - 240 V, 50 Hz
9880 743004
3 ~ 220 - 240 V, 60 Hz
The sewing unit is delivered with
one
of
the listed
voltage sets
appropriate to the
nominal voltage.
4