Spreader - JUKI MF-7000 Series Engineer's Manual

MF

9) Spreader

1 Timing
Descend
Highest point
2.5 ± 0.1 mm
Just when the needle descends 2.5 mm from the
highest point of the needle bar, the spreader
begins to return from its extreme left position.
3 Position of spreader
™ The height is 11.5 ± 0.5 mm. (4.8 mm or less
needle gauge)
(11.1 ± 0.5 mm for 5.6 mm and 6.4 mm
gauges)
™ When the spreader is in the extreme left
position, the distance between the center of
the left needle and the top blade of the
spreader is 5.5 ± 0.1 mm.
™ When the spreader returns to the right, the
clearance between the spreader and the left
needle is 0.3 to 0.5 mm.
4 Fixing spreader thread guide
™ When the spreader is in the extreme right
position, the top blade of the spreader should
be between left side and middle of the
spreader thread guide groove.
™ The height is 0.8 to 1.2 mm from the surface
of the spreader.
5 Needle clamp spreader thread guide
™ When the needle bar is in the lowest position,
the clearance between the needle clamp
spreader thread guide and the upper face of
the fixing spreader thread guide is 4 ± 0.5 mm.
™ The center of the hole of the thread guide
aligns with the left side of the fixing spreader
thread guide groove.
Standard Adjustment
Return
−
2 Stroke
Direction of cloth feeding
19 ± 0.1 mm
5.5 ± 0.1 mm
11.5 ± 0.5 mm
Left needle
0.3 to
0.5 mm
Spreader
Extreme right
Groove
Top blade should be
between left side and
middle of the groove.
Fixing spreader
thread guide
Needle clamp spreader
thread guide
17
−
(11.1 ± 0.5 mm throat
plate for 5.6 mm or
more needle gauge)
Return
0.8 to
1.2 mm
Show spreader at
extreme right position
when setting height
4 ± 0.5
mm