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5. Starting
Changing the spring assembly for linear feeder's type SLL 400
Unscrew the 4 or 6 upper lateral spring fastening screws ("C") (M6 DIN 912). The complete
oscillator with mounted track can now be lifted upwards. Remove the desired spring pack
by releasing the lower lateral spring fastening screws ("D") (M6 DIN 912).
Before removing the spring pack, the protective conductor on the feeding side must be taken
out from the lower spring fixture.
Screw the removed spring pack into the mounting device for fitting springs size 400 and
fasten it in a vise. When installing and removing the laminated springs, make sure there are
little distance plates between the springs.
If you do not have a mounting device for spring packs, proceed as follows:
Fix the dismounted spring pack horizontally in a parallel vise with smooth clamping jaws
and perform the desired adjustments. When tightening the spring packs, make sure they are
in parallel alignment.
The mounting device aligns the two spring fixtures to one another. The fastening screws of
the springs are to be tightened with a torque of 12.5 Nm.
Reinstall the complete spring pack
To restore the former alignment of the linear feeder, the adjusting bore on the upper counter
mass end ("E") must be aligned to the oscillator with a pin (6 mm in diameter with a
minimum length of 70 mm).
On the feeding side, the oscillator is aligned near the counterweight by inserting another pin
(6 mm in diameter with a minimum length of 70 mm) into the adjusting bore ("I").
After having adjusted the spring angle to the desired position, the lateral fixing screws are
tightened again with a torque of 12.5 Nm.
Before putting into operation again, please remember to remove the centering pins.
12
When changing the masses of counter and oscillating weights
(installation or dismounting of counter or additional weights)
NOTE
the running speed or the natural frequency of the linear feeder
is changed. If necessary leaf springs must be added or
removed.
Part Feeding 7.0 Hopper & Hopper Controller Rev.5
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