Apparel Online Bangladesh Magazine Aug'17 | Seite 57

The positioning accuracy achieved by the machine cannot be matched manually.
Operating time is also considerably reduced because it is almost as good as an
automatic robot doing the work by itself, and there is also lesser waiting time since one
operator can operate two to three machines simultaneously.
board while the sewing machine
is still engaged in the sewing
of the current garment piece.
Consequently, the operator can
now use his/her waiting time
effectively during operation to
achieve increased productivity.
• Sub Clamp Device
automatically brings the
subsequent shirt front panel to
the sewing position after the
buttonholing of the current panel
to allow the sewing machine
to immediately start the next
buttonholing. This function works
effectively, especially in cases
where the operator is operating
two or more sewing machines
or is carrying out other works
simultaneously. The device is
available in button indexers from
Duerkopp Adler and Juki.
• Cloth Edge Sensor is a device for
detecting the material edge (the
collar side). Even if the operator
fails to correctly position the
material on the sewing
machine, the cloth edge sensor
detects the material edge (the
collar side) to keep the distance
from the upper edge of the
material to the first buttonhole
at a preset distance. This feature
is used in combination with
the Conveyor Belt System for
smoothly moving the fabric in
the direction of the sewing head,
like in case of the buttonhole
indexers from GTN and Juki, the
apparatus avoids any kind of
fabric damage.
• Automatic Vacuum System is
used for fixing the position of the
shirt front panels while sewing,
which ensures that no buttonhole
is positioned inappropriately.
Present in buttonholing indexers
from Duerkopp Adler and button
sewing indexers from Yuho,
it helps in improving finished
product quality and productivity
by further deskilling the
operation.
In addition to all the above
features, the button sewing
indexers have a button feeder
attachment and movable
adjuster at one end to slide
the fabric according to button
placements and button detection
system for automatically
calculating the distances of each
button and buttonhole from the
top button position. Apart from
this, stitch length and stitch
density regulation, point to point
stitching and firm material holding
add up to the functionality of
these machines.
Class 841 Buttonholing indexer from Duerkopp Adler helps in faster buttonholing
Method of Working:
Buttonholing & Button
Sewing Indexers
Any automated sewing unit is
called so because of automating
any of the three processes of
pick, sew and dispose. In case
of buttonholing indexers, the
operator is only required to place
the shirt front panel parallel to
the adjuster clamp, which fixes
the neckline of front panel with
the help of two sub clamp catch
plates. Similarly, the bottom edge
of the front panel is fixed and
aligned via the same mechanism.
After the placement is complete,
the sewing head automatically
stitches the buttonholes at preset
positions with the help of a belt
conveyor fixed in the machine
which keeps on feeding the fabric
and making buttonholes adjusting
Juki AC-172N-1790 Buttonhole indexer with pre-set mechanism, sub-clamp device and cloth
edge sensor
Buttonhole indexer from Yuho carrying advantage of button feeder for quick attaching
www.apparelresources.com | AUGUST 2017 | Apparel Online Bangladesh
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