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About the Metal Detector Range
Reject Devices
Reject Devices
Loma Systems offer a range of reject devices for removing contaminated products from your
production line, based on a number of factors including the product type, its general dimensions, the
general set up of your production line and of course how you wish to handle contaminated products.
The following reject devices are available and may be fitted to your machine:
■
The Stop-On-Detect reject device causes the conveyor to stop moving and an alarm to sound,
indicating that a contaminant has been detected
.
■
The air blast reject device uses a high pressure blast of compressed air to push a
contaminated product off the belt into the reject bin.
■
The pusher reject device pushes the contaminated product off the belt into the reject bin.
■
The plough reject device swings across the belt to divert the contaminated product off the belt
into the reject bin.
■
The retracting band reject device uses compressed air to activate a carriage retracting
mechanism to create a gap in the conveyor belt. The contaminated product then falls through
the gap and into a reject bin, which is mounted on the underside of the conveyor.
■
The powered decliner reject device uses compressed air to activate a carriage declining
mechanism which guides the contaminated product into a reject bin mounted on the
underside of the conveyor. The carriage then returns to its original position,
■
Alternatively, a conveyor can be supplied without a reject device but with ‘Signal Only’ output.
On detection of metallic contaminant in the product, the control unit provides an output signal
only. This conveyor can be used in conjunction with the customer’s choice of equipment.
As standard, a reject cover is fitted over the outfeed part of the belt and the reject device. This
protective device is intended to stop any part of a person’s body from being placed within the
operating area of the reject device. The Stop-On-Detect reject is not fitted with a reject cover.
Stop On Detect
Stop On Detect is the simplest type of reject device available which is most suitable for removing
heavy, awkward shaped and continuous strip contaminated products from your production line.
When a contaminated product is detected the conveyor belt will stop and an alarm will sound,
allowing you to remove the product from the conveyor belt and dispose of it in accordance with your
local procedures.
After removal of the contaminated product, you must then manually restart the conveyor.
Stop On Detect reject device are suitable for use with systems where a maximum of 60 packs are
being presented for inspection per minute and the maximum individual pack weight is 60Kg.
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