3022CS AUTOMATIC UNIT
45
19.4.ECCENTRIC FOR THE TRANSLATION MOVEMENT OF THE NEEDLE BAR
The purpose of this eccentric is to move the needle in synchrony with the material.
19.4.1.POSITION
Place the Needle Bar to the Lower Dead Center, in order to find the correct position of the eccentric of the Needle Bar
translation, respect to the Upper shaft inside the sewing head, so that the movement is perfectly symmetric respect to the
needle plate hole.
The eccentric is placed with the vertical table towards the outside.
Check the position with the pictures below:
From the back view is possible to note:
At the inside of the fusion the right side of the eccentric (1) is parallel to its left side (2) where is connected the lever (3)
that moves the pendulum of the Needle Bar.
In the frontal view from the loom of the Needle Bar, the eccentric (1) inside the fusion is parallel to the axis of the shaft.
19.4.2.MOVEMENT LENGTH
Always adjust the movement of the Translation of the Needle Bar on the grounds of the selected Stitch Length; to do so
press the key A on the parte Upper side of the Head and rotate the wheel.
When the key A comes down in the dimple:
· rotating the wheel toward the operator (anticlockwise) the Needle Bar movement is lengthened.
· rotating the wheel toward the operator (clockwise) the Needle Bar movement is shortened.
Disconnect the key rotating it anticlockwise to extract it from the dimple.
Insert a piece of paper of about 40cm long, execute a seam to check if the needle pierces the paper perfectly, or if the
paper is ripped (elliptic hole).
Ad just the length of the movement until the hole is perfectly executed.
ATTENTION
NEVER push the key A while the machine is in rotation.
Before starting the machine check that key A is disconnected.
1
2
3
Vertical eccentric
surface
90° respect to the rod
axis
Front view
A
Summary of Contents for 3022 Series
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