If you have a crooked splice the belt will mistrack as the splice goes by and return after it has gone by.

The best way to ensure proper splicing is to use qualified splicing technicians that have been certified by the belt manufacturer and having them follow the belt manufacturers recommendations is critical to a good splice.

I have even had a representative from the belt manufacturer present during splicing to ensure that they are following the procedures correctly.

For example Scandura (Fenner) list all of their splicing procedures on their web site.

www.scandura.net

Direct link to their splicing program and procedures.

http://www.scandura.net/assets/splic...homev2.1.pdf

They also list certified splicing companies. (Canada and USA only)

Your belt manufacturer would be the best place to start inquiring about certified splicing contractors.

Redards,

Gary Blenkhorn ■

Dear Mr. P. Rekhawar:

Crooked splices will indeed cause spillage.

As Gary Blenkhorn has stated, a quick way to identify a bad splice is to watch the conveyor in motion. A crooked splice will move to apex side of its misalignment everywhere around the system. The movement will typically start approximately 10 meters ahead of the splice and the belt will be back on track approximately 10 meters after the splice has passed (The distances involved will change with the severeity of misalignment in the splice and with the belt speed).

One factor to be aware of is that of bowed belt ends. If the splicer joins a bowed belt, the splice area will act in a similar manner as with a crooked splice except that the sideways movement will not be centered on the splice (id est, the belt might start to move 15 meters before the splice and be tracking straight again 5 meters after it).

As stated by Gary, only well trained splicers should be used. Low cost, poorly trained splicers are too expensive to use when you factor in the costs of spillage, downtime, belt wastage, and resplicing.

As far as rapid identification is concerned, after the splicing is done mark the belt with a wide white or yellow line goes across belt. Then have someone stand at a convenient point anywhere along the system (standing over the system is the best for a good view) and watch the belt run at least three times around the system with no load or a light load. The mark will let the spotter know when the belt has gone through a complete revolution. If mistraining occurs, the spotter can stop the belt and mark the mistraining section for closer examination. If all is well, you should not have a spillage problem. If not, you can correct the belt problem before you have a belt and spillage problem.

Wood or metal framing can be used to maximize splice squareness, if sufficient space is available (this is rarely the case). This technique requires that the two ends outside of the immediate splice area are flat and edged by wood or metal strips that are aligned with each other. Ideally, the strips should be 10 meters in length - which means that you would need a clear space of the splice length plus appoximately 22 meters (the extra two meters allows for working room for the splicers). Note that this will not help with a bowed belt end - except to give the splicer an early warning when the belt end will not fit within the guides easily.

Regards, ■

sir

please tell me what tipe belt

regrads

elango

vulcaniser ■