Vibratory tables are table assemblies that are shaken by a vibrator and it is mainly used for fatigue testing, concrete casting, breaking apart, or compaction of media or packaging. Vibratory tables are also known as vibrating tables or shakeout tables.
The vibrations of vibratory tables are often imparted by means of off-balance masses rotating on a shaft, but many other mechanisms are also widely used according to the usage. For example, densification needs in the refractory industry have demands above 3600 RPM, rotary air units are used to achieve this. The air-operated unit’s intensity can be varied by changing input air pressure with a pressure regulator.
Types of Vibratory Tables
Different types of vibratory tables include belt conveyor vibratory tables, grid vibratory tables, flat table conveyor vibratory tables, vibrating tables, shake-out table, and compaction tables. Also, vibratory tables are further classified on the methodology followed for generating the vibration. Electric, air-powered, or hydraulic vibratory tables are available in this classification.
Special Features of Vibratory Tables
Some of the special features of vibratory tables include low profile, adjustable frequency, adjustable amplitude, and heavy duty capabilities. Electric vibratory tables are available with variable speed and timing controls, which enables dialing into the best operating frequency with digital accuracy. Digital sequence timers on vibratory tables allow operation at multiple frequencies and durations. Some vibratory tables manufacturers offer added features such as relocated grease nipples for protection against damage and dust collection, sealing arrangement that prevents lubrication from entering electrical parts, temperature regulation due to strategic positioning of parts, plate covers to handle knocks and dents, spheroidal bearing housings for lower heat generation and less wear during bearing replacement, quality resin around electrical connections, specially designed bearings to handle bending in the shaft, and well-designed foot mounts for increased load capacity.
Vibrating tables are widely used in packaging processes across material handling industries to shake or settle containers so that it can hold more products. Vibratory tables are used to settle product contents in drums, bulk bags, portable bins, bulk boxes, lever packs, concrete, foundries, and moulds. Vibratory tables are also widely used in pharmaceutical industries to fill tablets, capsules, and medication ampoules while packing. Vibratory tables are also commonly used in automotive, aerospace, and defense industries to test products in order to determine or demonstrate their ability to withstand vibration.
Vibratory tables are an integral part of product handling industries such as chemical, pharmaceutical, food, refractory, or casting industry for its densification demands.