5-13) Needle-Hook Timing Control - SunStar SWF/C Series User Manual

5-13) NEEDLE-HOOK TIMING CONTROL

1) Needle
① It is very important to select the right needle for the type of thread and fabric used.
② Inappropriate needle may cause bad embroidery, thread breaks, skipped stitches, etc.
③ For normal embroidery, use a DB×K5 needle.
[CAUTION]
DB K5 needle has an eye twice larger than that of DB1 (used for normal sewing). Use DB X K5 for
normal embroidery.
2) Relationship between Needle and Thread
① Inadequate selection of thread and needle may result in thread breaks, skipped stitches, as well as in bad-
quality embroidery.
② Refer to the following table of threads and needles used for normal embroidery.
US
0.25
0.27
0.29
0.32
0.34
0.36
[CAUTION]
Needle and thread most commonly used in embroidery are DB K5 #11 and rayon yarn 120d/2.
3) Changing the Needle
① Make sure the needle is completely clear of the needle plate before attempting to change it. If the needle is not
clear of the plate, manually turn the main shaft with a hand lever to put the needle in the right location for
change.
STOP the machine before
turning the shaft manually.
Immediately remove the lever
afterward: it is dangerous to
operate the machine with the
lever inserted.
NEEDLE SIZE
Japan Germany
9
10
11
12
13
14
CAUTION
Cotton
65
70~80
70
75
50~60
80
85
50~60
90
5-18
THREAD SIZE
Silk Nylon
100~120 130~150
80~100
100~130
60~70 80~100
Main shaft
lever
Rayon
70~100
100~130
130~150
Needle
Needle plate
[Fig.5-26]