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(5) Feature of the corner knife actuating position setting
Corner knife of APW-896N has the features below.
• Left and right corner knives are independent and the corner knife actuating positions of left and right cor-
ner knives can be separately adjusted.
• Two kinds of long and short corner knives are provided to comply with the slant sewing of large deflection
amount.
Corner knife when performing slant sewing shows the cutting edge as shown in Fig. 1.
In the state of parallel sewing that the relation of position of left and right knives (deflection of knife) is “0”, left
and right knives simultaneously push up. However, when there is deflection between the knives, left or right
knife separately goes up and comes down, and the material is cut.
Fig. 1
Parallel sewing
Short
Short
0mm
0.1mm
0.2mm
0.3mm
0.4mm
4.0mm
As shown in Fig. 2, the deflection of knife exceeds 4.0 mm, the knife on the outside does not cut. Thereby,
cutting is performed by combination of a short knife and a long knife.
(Refer to i ) of “Caution” below.)
[Deflection of corner knife]
Fig. 2
Parallel sewing
Short
Long
4.1mm
4.2mm
4.3mm
4.4mm
4.5mm
8.0mm
[Deflection of corner knife]
There are two conditions that the corner knife does not cut normally.
i) When the offset amount of left and right knives exceeds 4.0 mm (4.1 mm or more) (Fig. A)
ii) When the long knife enters the inside of the short knife (Fig. B)
Offset amount 4.1 mm or more
Long knife enters the inside
of short knife.
Fig. B
Fig. A
In case of any condition described above, the corner knife does not cut, and error message (E480/E481)
of “Setting that corner knife does not cut” is displayed on the panel.