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7-5. Operation and Adjustment of the work holding device
Work holding device is largely divided to the clamp frame assembly, which clamps the sewing cloth, and
the work holder assembly which prevents the lift of clamp frame assembly.
7-5-1. Holding motion
Control and operation before the sewing cloth is clamped and the stitching starts are conducted with
following sequence.
(1) Work holding device is set at the
mechanical home position with the home
position return operation.
Work holding device is fed to the limit at
this side and, synchronously with the
home position stop, the presser plate and
arm of work holder assembly go up and
the presser plate is released.
(2) When the sewing cloth was set on the
feed plate, turn on the 'Presser (black)' of
foot switch. Clamp plate and work holder
arm go down together. Work holder arm
has a slider, which is driven with the air
cylinder, and the sewing cloth is clamped
with the retracting force pressing the
clamp plate of this slider.
To cancel the clamp, turn on again the
'Presser (black)', of foot switch.
(3) When the holding was completed, turn
on the 'Start (gray)' of foot switch and start
to stitch. Slider operates to push up the
bottom face of clamp plate and, while its
retracting force maintains the clamping of
sewing
cloth,
the
mechanism moves with the drive of X-Y
table.
Work holder arm
Presser plate
work
holding
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Work holder assembly
Feed plate
Clamp plate
Clamp plate
Slider air cylinder
Clamp plate
Clamp frame assembly
X･Y table
Work holder arm
Slider
X･Y table
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