Operating instructions

1. Product Description
1.1 Proper Use
The
DÜRKOPP ADLER 841-27
is a sewing unit which can properly be
used for the sewing of light to medium weight material.
Such material is, as a rule, material made up of textile or synthetic
fibers. These materials are used in the garment industry. Generally,
only dry material may be worked with this sewing unit. The material
may not be thicker than
4 mm
when pressed together by the lowered
presser foot.
The material may not contain any hard objects because the machine
could otherwise only be operated with eye protection. Such eye
protection is not available at this time. The seam is generally sewn with
sewing yarns of a dimension up to 65/2 Nm (synthetic threads with cotton
covering or synthetic threads). Those wanting to use other threads must
first estimate the dangers arising the refrom and, if necessary, take
appropriate safety measures. This sewing unit may only be installed and
operated in dry and clean premises. If the sewing unit is used on other
premises which are not dry and clean, further measures, which are to be
agreed upon, may be necessary (see EN 60204-31:1999).
We, as a manufacturer of industrial sewing machines, assume that at
least semi-skilled operating personnel will be working on our products
so that all normal operations and, where applicable, their dangers are
presumed to be known.
1.2 Short Description
The 841-27 is a sewing unit for the automatic sewing of buttonholes in
shirt and blouse fronts.
Because of the construction of the sewing unit in independent function
modules, such as feed, advancing, sewing station and stacker, a
completely overlapping work procedure is possible.
In the feed unit the fronts (material) are positioned along a stop and at
markers and fixed by a vacuum. After the transfer of the material into
the advancing unit the transport occurs in pre-programmed steps
(buttonhole spacing) to the sewing station. During the sewing of the
buttonholes the advancing unit moves synchronously to the transport
movement of the sewing machine. Then a return to the initial position
and the material is stacked.
1.2.1 Sewing Machine Head
–
Double saddle stitch - automatic buttonhole machine with bottom and
top feed.
–
Normal manner of sewing, right side of material (side seen) up
during sewing.
–
Pneumatically-operated cutting system with slot in the needle plate.
–
When the needle thread breaks, the needle thread monitor
interrupts the sewing cycle, the cutting is prevented. Then it is
possible to conduct a repair seam as well as removal of the
material.
–
The underthread quantity is controlled by an underthread counter.
–
Sewing drive via DC motor.
–
Material transport via step motor.
–
Mechanical quick change for the clearance of the buttonholes to
the front edge of the material.
1
5