I. driver bar (figure 26) – MBM Corporation BINDERYMATE 2 User Manual

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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)