18
M. Wire Straighteners:
(Figure 17)
All coils of stitching wire have a certain amount of
bundle curve. The purpose of a wire straightener is
to remove this curve. There is both an upper wire
straightener (Index A) and a lower wire straight-
ener (Index B) on all M2000 Model Stitchers. See
"Threading Wire and Adjusting Wire Straighteners"
page 4.
The upper wire straightener should feed wire paral-
lel to the faceplate. This insures that the wire will
properly enter the rotator and will be aligned with
the grooves in the bender bar.
If the wire is not parallel to the face plate the wire
is sheared in the rotator as the bender bar descends.
Adjust the upper wire straightener.
The lower wire straightener directs the wire straight
down so that it enters the rotator (Index C). If the
wire is not straight enough it hits the rotator and
buckles. Adjust the lower wire straightener so that
The magnets in the rotator hold the wire firmly in
the rotator. If a magnet is broken or chipped the
wire may fall out. To determine if the rotator has
the proper holding strength, remove the rotator and
insert a cut length of wire in the rotator. Hold
rotator between thumb and forefinger. Attempt to
jar wire loose by hitting heel of hand on top of
table or against other hand. With proper magnetic
holding force wire will remain in rotator. With
insufficient holding force wire will fall from rota-
tor. Replace the rotator.
The rotator holder and rotator operating spring are
responsible for alignment of the wire beneath the
bender bar grooves. The position of the rotator
holder determines how far the rotator is pushed
forward under the bender bar by the rotator operat-
ing spring (Index L, Figure 15). A weak spring will
not push the rotator in far enough and with this im-
proper alignment the bender bar will knock the wire
from the rotator or will shear the wire into pieces.
To secure proper alignment, check the position of
the rotator holder and the tension applied by the
rotator operating spring. Make any necessary ad-
justment of the rotator holder or replace the rotator
operating spring if weak.
The wire is fed into the rotator and held for form-
ing. If the rotator is dirty, the wire is not gripped
securely enough and drops out. Remove and clean
the rotator. If the edges over which the wire is
formed are sharp, the corners of the stitch crown
will fracture. Remove the rotator and polish the
edges with a fine emery cloth.
To remove, Adjust or Replace the Rotator Holder:
1. Swing the rotator operating spring to the left.
2. Remove the rotator.
3. Loosen the rotator holder screw (Index N,
Figure15).
4. Adjust the rotator holder.
5. Reassemble.
A
B
C
D
(CTTT2605 Scenes 3 &4)
Figure 17
