Additional Roller Conveyor Systems Selection Facto
10th August 2021Cleats, high friction belting, buckets, etc. are common forms of preventing product slip. A heavily loaded inclined belt conveyor can slip backward when the drive is off. Such roller conveyors employ backstopping brakes that engage automatically with de-energization of their motors. Often, the brake is releasable to allow the roller conveyor to reverse for unloading prior to servicing. In some roller conveyors, a certain amount of slippage is desirable; those handling glass bottles on packaging lines will often employ some form of back-pressure relief to prevent breakage to the bottles as they accumulate in a staging area such as a filler infeed.
A roller conveyor belt is susceptible to static electricity as the belt is continuously pulled against the end pulleys. If electrical components are being conveyed, static electricity can be hazardous. Anti-static roller conveyor belt measures such as conductive belts or static control brushes should be considered to protect products.
Other safety considerations must be exercised due to often long roller conveyor lengths and their proximity to personnel. Live roller roller conveyors can be furnished with pop-out rollers that disengage from their drive belts if a person’s hand or foot slips between rollers. Crossovers can be used to permit people to pass over long sections of belt conveyors. Roller style roller conveyors often use manual or powered gate sections to accomplish this.
Roller conveyors often incorporate some type of soft starter or clutch mechanism to avoid overloading motors when starting fully loaded belts, chains, etc. Some belt conveyors are fitted with geared motor drives that incorporate internal motors and gear drives within the head rollers which eliminate the need for externally mounted motors and power transmission components.
While many roller conveyor systems are fixed and permanent, a great many are also portable and designed for loading trucks, railcars, silos, etc. Outfeed and infeed roller conveyors built specifically for packaging operations are often caster-mounted for easy transport within a facility.
This article comes from thomasnet edit released