PLC Technology Applied in Vibrating Screen

For metalcasters to be successful today, the formula is simple: produce more high quality castings with less equipment, people, and maintenance. In many foundries, the shakeout has been an expensive roadblock to this path of success. Decades-old foundry technology has contributed to increasing operating costs while limiting the ability to adjust to ever-changing customer demands.

A radically new technology, however, stands ready to put those old shakeouts in the industrial museum. The new patented Delta-Phase® Vibratingout (patent #5,615,763) will improve your foundry’s bottom line by reducing maintenance costs, reducing or eliminating casting damage, and maximizing sand removal. Perhaps more importantly, this single machine can handle a wide range of molding processes, mold sizes, metal types, and casting designs by adjusting to your ever-changing production demands.

Control conveying speed retention time…precisely.

The heart of the Delta-Phase® Vibratingout is the process controller. Using simple and reliable electronics, the Delta-Phase® Vibratingout is able to precisely control the angle of vibration. This change in vibration angle controls the conveying speed and retention time of your castings on the shakeout deck, optimizing sand removal. You can accurately and automatically change this angle–even on the fly! A wide range of casting types and sizes can be accommodated by using pre-programmed settings. Each casting type can be assigned a set of pre-determined shakeout parameters to optimize sand removal without damaging the casting.

Using common VFD and PLC technology, the angle of vibration is changed to meet each unique shakeout requirement. Most foundries produce a wide variety of casting shapes and sizes. When a fragile casting is processed, the angle of vibration may be lowered in order to reduce the retention time and the overall force imparted onto the casting. When a heavy casting is processed, the angle is increased to increase retention time and improve sand removal.Vibrating screen

The Delta Phase is typically operated in “stop-n-go” mode or “continuous” mode. In “stop-n-go” mode, the angle of vibration is set at vertical once the mold reaches the center of the shakeout. Separation of sand from the casting and lump breakdown continues until the next mold approaches the shakeout. In continuous mode, the angle of vibration is set and maintained to provide the optimum retention time for the castings being produced. When a new casting is made, the angle of vibration is changed to its optimum angle.

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