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 Assembly
The life of an eyelink belt partly depends on correct assembly, belt guidance and support. The alignment of the drive and idle roller is of the utmost importance in this respect. They should not be positioned precisely horizontally and at right angles with the direction in which the belt runs. The rollers themselves should be positioned exactly parallel to one another.
By means of the take up mechanism, the drive and idler shafts should be moved as close as possible to one another. Then the pulling cable is fitted, starting from the idle roll and feeding it over the supports of the carrying path to the drive shaft, where the cable is wound around the drive shaft a few times.
The rolled up belt is then put exactly in front of the idle shaft. With linking wires the end of the belt is linked to a steel plate in several places. A number of hooks are fitted onto this plate to which the pulling cable is connected.
This upper part of the belt can now be pulled in, using the motor power of the drive roller, and pulling away the cable to keep it taut on the drive roller. Light belts can be pulled in using manpower, which in some cases will be a quicker method. When the beginning of the belt touches the drive shaft, the belt is laid into the teeth of the sprocket (or the cage roller) while checking carefully that the teeth of all sprockets are in a straight line. Disconnect and unwrap the pulling cable from the drive roller. Then the motor power of the drive roller is used to pish the belt into the return path. Reconnect and pull the belt with the pulling cable with the driver roller being motor driven, to insure that the belt will not pile up while pulling the belt through the return path.
The two ends of the belt are pulled towards one another very tightly and one end is shortened to the proper length for splicing by pulling out the appropriate cross rod and removing the excess belt pitches. Please note that a belt pitch with exterior bar links should be connected with a pitch with interior bar links. A properly joined eyelink belt will have an even number of pitches.
Then the belt is made endless a shown in the accompanying diagram.
The splicing cross bar supplied with the belt, which already has a welded head at one end, can now be shipped into the joint openings of bar links and eyelinks. The other end of the cross rod is welded off with a washer supplied for this purpose (always position this washer in line with the other washers so as to allow the joint to hinge freely). To make a TWENTEBELT eyelink belt with plastic bar links endless, the linking rod and the bar are fastened with the supplied pins.
Finally, the take up / tensioning mechanism is used to set the belt's correct tension and straighten the belt's run.
A straight belt run can only be achieved by setting the drive, idler and support rolls correctly. Longitudinal supports must be laid in with precision. The grooves in the drive sprockets or rollers have no guiding function whatsoever. It is wrong to change the belt's run by manipulating the side guiders. If the belt is rubbing against the side wear strips, the conveyor rolls and supports should be checked frequently over a long period.
MAINTENANCE
In general, TWENTEBELT eyelink belts require little maintenance. In addition to checking the installation regularly, attention should be paid specifically to checking the belt run. The belt and drive sprockets and rollers should also be continually checked for building up of dirt. This is a common cause of operation problems and extra wear.
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