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Conveyors

Grainger offers a wide range of conveyor systems that can benefit your material handling and packaging needs. Instead of using strenuous labor, a gravity conveyor can safely and effectively transport materials to and from any location. Easily expandable and portable, these conveyors can be shaped and installed anywhere. During the assembly line, a ball transfer table allows workers to easily rotate heavy products and gain access to all sides with minimal effort. If you need conveyor rollers or other replacement conveyor parts, you can find them at Grainger.

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Conveyors Q&A

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Conveyors
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In case you needed to clear a jam.
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Use photo-electric sensors as inputs to your PLC (Programmable Logic Controller ). Place the PE ( Photo-Eye ) slightly upstream, usually about 12", of the expected jam position. Create a timer with a value a little bit longer than it takes for a carton to pass the PE under normal speeds and conditions.

A jam light, horn or indication on an HMI is generally used to indicate the presence of a jam. A yellow or amber beacon is most common in the industry.

When a jam is detected, turn off the conveyor with the jammed cartons. Conveyors upstream must be turned off as well. It is best, if possible, to keep downstream conveyors running. The purpose of this is to make it easier for workers to clear a jam because the can push boxes towards the running conveyor to get them out of the way as they clear the jam. This is especially useful when the cartons are heavy or the conveyor is elevated.

Lastly, it is a good idea to place a jam reset push-button near the location of the jam. This prevents the operators from having to walk to the main control panel, which could be a great distance away.

Be aware.. typically, jam sensors are placed perpendicular to the conveyor in order for them to detect very small gaps between cartons. This is important for a high throughput system.

Also, depending on system design, slugs of cartons my create a false jam. There are several ways around this, and it is very dependent on system design and configuration.
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