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Dressing a Conveyor Belt Mechanical Splice

If for some reason, such as limited belt thickness, belt damage, or limited time to complete a repair, it is impossible to properly recess a mechanical splice by skiving, the splice can be dressed. This can be done by either lowering its projecting surfaces by grinding or submerging the raised surfaces by encapsulating.

Improperly dressed mechanical splices can cause sealing problems at the transfer point, leading to dust and material spillage, and impede belt cleaning efforts at the head pulley.

With the first approach, grinding away the high spots will ensure the leading edge or bolts and rivets do not protrude above the splice. Care must be taken when grinding the splice to avoid digging into the belt or removing too much of the splice.

The second approach is the encapsulation of the splice in a material to protect both it and the cleaner from impact damage. This is usually accomplished with an adhesive or elastomer applied like putty onto the belt and splice. Although the cleaning system will still have to ride up and over the mechanical clips, the splice surface will be smoother, without obstacles like fastener heads in cleaner’s path. The downside of this procedure is that because the mechanical splice is covered, the joint is harder to inspect and repair.

A close-up view of the conveyor belt shows the fasteners have been recessed into the belt top cover. A close-up view of the conveyor belt shows the fasteners have been recessed into the belt top cover.
Dressing the splice will protect both the mechanical fasteners and belt cleaners. This can be done by either lowering its projecting surfaces by grinding or submerging the raised surfaces by encapsulating. Top photo: before encapsulation. Bottom photo: after encapsulation.

Topics: Basics of Belt Conveyor Systems

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