JUKI LK-1900B series, Руководство инженера

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Adjustment procedures Results of Improper adjustment
1. Move the suction cylinder ❶ to most advanced position. (If the air
is supplied, lock the solenoid valve hook manually in most ad-
vanced position.)
2. In this state, remove the shorter thread remaining unit (throat
plate upper (asm.)). Then remove two setscrews ❸ of the needle
hole guide B ❷ .
3. Loosen two setscrew ❺ of the suction pipe base and adjust the
position of the suction pipe ❹ so that the center of the needle ❽
may be located at the following positions towards the hole of the
suction pipe
❹ , as viewed from operator's side.
• Longitudinal position : Center of distribution (A=B)
• Lateral position : 1 mm from the right-hand edge of the hole of
the suction pipe ❹ .
4. When you cannot adjust it fully only in the adjustable range of
setscrew ❺ , loosen the fixed nut ❻ of the cylinder knuckle ❼
and tighten the fixed nut ❻ at the position which has been prop-
erly adjusted by making the cylinder knuckle ❼ move back and
forth.
5. After the adjustment, make sure that there is a clearance be-
tween the suction pipe ❹ and the counter knife that was attached
to lower surface of the throat plate or the needle hole guide B ❷ .
o
When the position of the suction
pipe ❹ is inappropriate, suction
of an end thread after operat-
ing the shorter thread remain-
ing knife worsens, and a short
thread remains in the lower part
of the hook
.