PILLAR MACHINE H49 - Page 30

BOWL DRIVER GENERAL INSTRUCTIONS
Installaon
All base units are factory adjusted and ready for assembly of the bowl to
the base unit top casng. The screws on the rubber feet at the boom
of the base casng should be snug but not distort the rubber.
Assemble the feeder bowl to the base unit top casng. Center-mounng
is the most common method; however, some units have provisions for
top-mounng or boom-mounng (using 3-8 screws instead of one).
Bowl mounng screws are provided with the bowl. Do not substute
other screws for those supplied.
Wiring
Base units without power cords must be connected to the feeder coil
through a hole in the base casng. ADI recommends type SO or SJO
three-conductor cord, from 16 gauge to 14 gauge, depending on the
amperage of the feeder coil. Smaller feeders are factory wired with SJO
cords. If the base unit has a hinged metal cover, put it back on aer
compleng wiring. If le o, the feeder amplitude may be aected. To
power our units, we manufacture controllers for all of our feeders.
Operaon
It is not necessary to have an in-depth knowledge of vibratory feeders to
operate and maintain them. Reading the balance of these instrucons
will provide informaon fundamental to your success with feeders.
Refer to the assembly drawing provided as we explain how a vibratory
parts feeder works.
When power is applied to the coil, the armature is aracted to it. This
pulls the top plate down and causes the springs to ex. Since the springs
are on an angle, the top rotates as it moves down. A bowl secured to
the top plate will follow the acon of the top plate.
When power is removed from the coil, the springs return to the top
plate to its original posion. This acon is repeated 3600 mes per
minute - so fast you cannot see the bowl and the top plate move. Any
parts placed in the bowl rotate around the inside oor of the bowl, work
their way toward the outside wall, climb the track, and discharge from
the bowl. The parts are oriented as they move up the track and pass
through controlled obstrucons (known as tooling) aached to the walls
and tracks of the bowl.
The springs on a base unit are selected at the factory to accommodate a
given weight and size of bowl. Make sure you know which bowl goes on
which base unit. With the controller power switch in the ON posion,
slowly turn the potenometer clockwise. Watch the parts in the bowl.
Parts should move through the bowl fast enough to meet requirements,
but not fall o the tracks or constantly be rejected by the bowl tooling.
Coil Adjustment
Adjustment of the coil is rarely necessary. The armature should never
be allowed to strike the coil. There should always be a gap between the
coil and the armature when the base unit is operang at maximum feed
rate. Look at the drawing of your base unit. Models 3, 5, and 8 use a
single screw to adjust the gap. Turning that screw clockwise moves the
coil down, increasing the gap between the coil and the armature.
The coil assemblies on Models 10, 15, 20, 25, 30, and 35 sit on four
threaded studs. Lock nuts, above and below the mounng plate, x the
posion of the coil assembly on the studs.
Checking Performance
Vibratory parts feeders are reliable and generally give extended service
without needing repairs. Periodic inspecon will make a great deal of
dierence not only in feeder performance but, more importantly, in
producvity. This secon will help you detect problems and make
lasng correcons.
If you are experiencing diculty, try isolaon the problem. Is it the bowl
and base unit (a mechanical problem) or the controller (an electrical
problem)? If the controller has ever a small eect on the amount of
vibraon in the base unit, it is probably okay. When no vibraon can be
felt and no audible noise heard from the base unit, the problem is prob-
ably in the controller. Please consult the instrucons sheet for the con-
troller if you believe it is at fault.
Mechanical problems can be isolated to either the base unit or the bowl.
Check the bowl mounng. Are the bowl screws ght?Is there any for-
eign maer between the bowl and the top plate that won’t allow the
bowl to set properly? Is the inside of the bowl dirty, oily, or scky? Is
any tooling loose? If there are no problems with the bowl, then check
the base unit.
Start with the rubber feet - they should be so and not cut up, and their
movement should not be restricted by the foot locators. Remove the
shell from the base unit and make the following inspecons:
Check the spring banks for indicaons of wear.
This will show up as red oxide between the springs and the
spacers. If it is present, the spring banks should be disassem-
bled, the springs wire-brushed, and new spacers installed.
Is there evidence of the coil and the armature laminaons striking each
other?
Look at the corners of the laminaons to see if they are
hing. Refer to the coil adjustment secon in these instruct-
ons.