MBM Corporation BINDERYMATE 2 - Manual (Page 25)

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2. Remove bender bar friction bushing (Index A).
Bender bar friction plug (Index C) and spring
(Index B) will be released forward from bender
bar assembly.
3. Replace plug and/or spring and reassemble.
I. Driver Bar (Figure 26)
The driver bar (Index A) has several functions:
1. It imparts the downward thrust from the driving
slide assembly (Index B) to the bender bar
assembly (Index C).
2. It returns these parts to the neutral position on
the upstroke.
3. In conjunction with the grip release slide (Index
D), it controls the movement of the bender bar
latch (Index E) that opens and closes the grip
(Index F).
If the notches (Index G) at the top left side of the
driver bar become worn, the grip will not remain
open on the upstroke. As a result the wire feeds
backwards and buckles above the grip and below
the tension pawl. Worn notches can also cause
uneven wire draw. Replace the driver bar.
The notches shown on left side of driver bar play
an important part in function of bender bar assembly
therefore, corners should be free of dirt and notches
not marred.
The driver bar rides within the bender bar grooves
as part of the bender bar assembly. As this assembly
reaches the lower contact point of the cam in the
grip release slide, the bender bar latch is forced
inward, releasing the wire grip and permitting the
bender bar assembly to continue downward with the
end of the driver bar riding on top of the formed
stitch. When the bender bar is stopped against the
work material, the driver bar continues downward
to exert pressure on the crown of the stitch, driving
it through the work material.
If the end of the driver bar is chipped it allows the
legs of the stitch to back up into the broken area.
This causes the corner of the crown to fracture or
a "spike" section to protrude above the crown. A
chipped driver bar is usually the result of driving a
stitch on top of another stitch. A worn driver bar
often causes deformed stitches or fracturing at the
corners of the crown.
Figure 25
(CTTT2605 Scene 13)
Figure 26
(CTTT2605T3 Scene 10, CA9012M)
A
B
C
B
D
F
E
G
A
C