Справочник Пользователя для Brother DH4-B980
7. SEWING
RH-9800
33
7-4. Needle and knife position
The feed bracket is electronically controlled by means of pulse motors.
It is not necessary to change the position of the knife when switching between cutting before sewing and cutting after sewing.
It is not necessary to change the needle down position in order to keep enough space for cutting when cutting after
sewing has been selected.
It is not necessary to change the position of the knife when switching between cutting before sewing and cutting after sewing.
It is not necessary to change the needle down position in order to keep enough space for cutting when cutting after
sewing has been selected.
Relationship between knife position and eyelet shape
1. When cutting before sewing, the inside needle down
position must be aligned accurately with the straight
line section of the eyelet (when the cutting space H is
0).
This is set correctly at the time of shipment from the
factory.
line section of the eyelet (when the cutting space H is
0).
This is set correctly at the time of shipment from the
factory.
2. The shape of the eyelet is automatically changed
according to the shape of the knife for cutting before
and after sewing and for no cutting.
and after sewing and for no cutting.
Eyelet shape (c X d)
Knife No.
Cutting shape
(a X b)
Cutting before sewing
or off (no cutting)
Cutting after sewing
1
2.1 X 3.2
1.9 X 2.8
2.4 X 3.9
2
2.8 X 4.3
2.4 X 3.9
3.3 X 4.6
3
3.0 X 4.6
3.2 X 4.1
3.6 X 4.8
4
3.2 X 5.4
2.8 X 4.7
3.6 X 6.1
5
Straight
Straight
Straight
6
3.8 X 4.3
3.2 X 3.6
4.0 X 4.5
3. At the time of shipment, the installation position for the
knife is adjusted to the position shown in the
illustration at left (when the cutting space H and the
knife position compensation value I are "0").
illustration at left (when the cutting space H and the
knife position compensation value I are "0").
Explanation of the cutting space function
When cutting after sewing, this function moves the outer needle down positions in accordance with the knife shape so
that the seam is not cut by the knife.
that the seam is not cut by the knife.
1. When cutting after sewing, set the cutting space H to an
appropriate value so that the seam is not cut by the knife.
* The cutting space H should generally be set to
* The cutting space H should generally be set to
around 0.2 - 0.3. (Refer to page 24 for details on the
setting method.)
setting method.)
* The knife position compensation value I should be
set to "0".
Refer to "H. Setting the cutting space" and "I.
Setting the knife position compensation".
Refer to "H. Setting the cutting space" and "I.
Setting the knife position compensation".
Straight section
0936Q
a
c
b
d
Cutting shape (a X b)
Eyelet shape (c X d)
Knife
0937Q
(When cutting before sewing) (When cutting after sewing)
Cutting space
0938Q