Purl stitching
←
→
Whip stitching
Single stitching
←
→
Double stitching
●
The basting stitch is effective on elastic materials such as knits.
Basting stitch: Since the needle thread is tucked in without fail,
it will never jut out of the buttonhole seams.
Basting stitch can be sewn by nine rounds.
●
(The state in which the material is stretched in
the lengthwise direction after buttonholing)
①
Maximum position
Cloth
②
Intermediate position
③
Sewing position
(For a changeover between purl stitch
and whip stitch, threading of bobbin,
as well as the bobbin thread tension
need to be changed.)
•For double stitching, the bartacking
section is skipped and only the parallel
sections are sewn twice. This prevents
any excessively tight finishes in the
bartacking section of the buttonhole.
•First- and second-round stitches can be
sewn using different stitch widths.
17mm
17mm
Compact AC servomotor
(direct-drive)
Stepping motor
for the presser bar lifter
Stepping motor for the bobbin thread trimmer
Stepping motor for the cloth feed
Stepping motor for the bobbin thread trimmer
Stepping motor for the cloth feed
Stepping motor
for the needle throw
Stepping motor
for the needle thread trimmer
Double acting solenoid
for the cloth cutting knife
Compact AC servomotor
(direct-drive)
Stepping motor
for the presser bar lifter
Stepping motor
for the needle throw
Stepping motor
for the needle thread trimmer
Double acting solenoid
for the cloth cutting knife
●
Thanks to the multiple knife-dropping function, it is no longer required
that the knife be changed at the time the buttonhole size is changed.
The number of knife dropping times can be automatically set according
to the buttonholing size in cases where the buttonhole size is frequently
changed for small-lot productions or during the cycle sewing of
buttonholes that are different in size.
●
The double-acting solenoid type knife mechanism is free from the faulty
dropping/returning of the knife. In addition, the knife pressure can be
changed according to the material to be sewn.
●
The knife supports sewing lengths of 41mm at the maximum. In addition,
knife mechanisms for 70mm and 120mm are optionally available.
Since the LBH-1795 is provided as standard with the 120 mm presser, it
is capable of sewing 12-mm long buttonholes. The LBH-1795 is capable
of sewing long buttonholes such as belt holes in car seats. In addition, it
is applicable to the sewing of buttonholes in men's shirts (continuous
sewing of two buttonholes and the use of two units of sewing machines),
etc.
●
The new model of the bobbin thread trimming
mechanism cuts the bobbin thread so that it leaves
a shorter length of thread on the material.
Furthermore, the machine produces bartacks at the
end of sewing, thereby preventing finished seams
from coming undone.
●
With the soft-start function, the number of stitches,
as well as the sewing speed at the start of sewing
can be specified, thereby preventing the needle
thread from slipping off from the needle eyelet.
(From the first to the fifth stitches, the sewing speed
can be specified on a stitch-by-stitch basis.)
!
●
An electronic control feature has been adopted for the material feed
mechanism, needle rocking mechanism, needle thread trimming mechanism,
bobbin thread trimming mechanism, cloth cutting knife mechanism and presser
bar lifting mechanism. In addition, mechanisms such as V-belts, stop-motion
mechanisms and cams have been substantially reduced to ensure operation
with lower vibration and noise.
●
A direct-driven system that directly connects the
compact AC servomotor to the main shaft has been
adopted.
●
All adjustment values are entered as data. They can be
set or stored in the memory on the operation panel.
"
●
The machine is provided as standard with a newly-developed auto-lifter driven
by a stepping motor. This helps reduce the operator's fatigue. This helps reduce
operator fatigue. As for the pedal, one-pedal and two-pedal models can both be
changed over and the intermediate stop, which facilitates positioning of the
sewing product, can be specified.
●
The work clamp foot lift can be set as desired.
The reverse-rotation needle-up function offers
a maximum work clamp foot lift of 17mm.
!
Cycle sewing
●
Twenty different programs can be registered, and as many
as 15 different patterns can be stored in one program.
Continuous sewing
●
The machine is able to continuously sew two or more
different patterns without requiring the work clamp foot to
be lifted. As may as 20 programs can be registered, and
six different patterns can be stored in one program.
(Related parts need to be exchanged for optional ones.)
#!
●
The needle bar can be shifted to the rightmost end
position with the work clamp foot lowered.
This facilitates threading of the machine head.
!
!
Pedal motion
Pedal type
2-pedal
1-pedal
1-pedal
(without intermediate position)
(with intermediate position)
Initial position
Setting of sewing product
Start of sewing
End of sewing
Finished state of
double stitching
State of first-
round stitch
Whip stitching
Purl stitching
Without basting stitch
With basting stitch
Basting stitch
Position of the needle bar
during sewing
The needle bar can be shifted to
the right at the time of threading
②
Intermediate position
Presser goes up as high as the pedal
toe down amount of the left side pedal.
Presser comes down when the left
side pedal is depressed.
→③
Sewing position
The right side pedal is depressed.
②
Presser automatically goes up to
intermediate position.
①
Maximum position
The first step of the right side pedal
→
③
Sewing position
The second step of the right side pedal
①
Presser automatically goes up to
maximum position.
①
Maximum position
The first step of the right side pedal
→
②
Intermediate position
↓
The second step of the right side pedal
→
③
Sewing position
The third step of the right side pedal
①
Presser automatically goes up to
maximum position.
120mm buttonhole
LBH-1795S