Can oily products be used with a vibratory bowl feeder? How should it be made?

How Should a Vibratory Bowl Be Made for Oily Products?

If you must use a vibratory bowl for oily parts, the following design modifications are recommended:

1. Surface Treatment & Materials

MeasurePurpose
PTFE (Teflon) coatingReduces friction and prevents oil from sticking to the track.
Stainless steel bowl (SUS304 or SUS316)Resists oil‑related corrosion and is easy to clean.
Hydrophilic / oil‑repellent coatingSpecial coatings that repel oil (e.g., oleophobic coatings).
Smooth surface finish (polished)Minimizes surface roughness where oil can accumulate.

2. Track & Bowl Geometry

MeasurePurpose
Wider trackReduces clogging from parts sticking together.
Steeper inclineHelps parts slide rather than stick.
Air jet assistanceNozzles blow parts free if they stick.
Special wiper bladesDesigned to scrape off excess oil before it accumulates.
Self‑draining bowl designAllows excess oil to drain out of the bowl (e.g., small drainage holes or a sloped bottom).

3. Drive & Vibration Settings

MeasurePurpose
Higher amplitudeProvides more energy to overcome sticking forces.
Lower frequencyGives parts more time to separate before the next pulse.
Vibration direction adjustmentFine‑tune the leaf spring angle for optimal forward movement.

4. Upstream / Downstream Additions

MeasurePurpose
Oil removal station before the bowlClean parts before they enter the bowl (e.g., air blow, ultrasonic cleaning).
Ionizing blowerRemoves static charge that can make oil‑coated parts cling.
Drip tray / oil collection systemCatches excess oil that drains from the bowl.

5. Regular Maintenance

TaskFrekvencia
Clean the track with solventDaily or weekly (depends on oil level).
Inspect and replace coatingsWhen PTFE coating wears off (every few months to a year).
Clean drainage holesDaily to prevent clogging.

III. When a Vibratory Bowl is Not Recommended for Oily Products

For heavily oiled, sticky, or wet parts, alternative feeding methods are often more reliable:

AlternativeVýhody
Pusher feederNo vibration; pushes parts mechanically; oil does not affect performance.
Centrifugal feederContinuous rotary motion; less affected by oil adhesion.
Flexible feeder + vision + robotParts are scattered and picked by vision; no oil‑sticking issues on tracks.
Belt conveyor with side guidesSimple, low‑cost, and oil‑resistant belts available.

IV. Summary Table

AspectRecommendation
Can oily products be used?✅ Yes, but with special design.
Best surface coatingPTFE (Teflon) or oleophobic coating.
Track designWider, steeper, with air jets and drainage.
Vibration settingsHigher amplitude, lower frequency.
MaintenanceFrequent cleaning required.
Better alternativesPusher feeder, centrifugal feeder, flexible feeder.
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