Conveyor Belt Parts

- Dec 28, 2018-

All conveyor belts must be connected in a ring shape to be used, so the quality of the conveyor belt joints directly affects the service life of the conveyor belt and whether the conveyor line can run smoothly and smoothly. Common methods of conveyor belt joints include mechanical joints, cold bonded joints, and hot vulcanized joints.

Conveyor belt category

Conveyor belts can be divided into rubber belts and plastic belts.

Common three methods of editing

Conveyor belt mechanical joint method

Generally speaking, the use of belt buckle joints is convenient and convenient, and economical, but the joints are low in efficiency and easy to damage, which has a certain impact on the service life of the conveyor belt products. In the PVC and PVG whole core flame-retardant antistatic conveyor belt joints, the products of the 8-stage belt or lower are generally used.

Conveyor belt cold bonding head method

Conveyor belt joint

Conveyor belt joint

That is, a cold-adhesive adhesive is used for the joint. This joint method is more efficient and mechanical than the mechanical joint, and should be able to have a better joint effect, but from the practical point of view, because the process conditions are difficult to master, the quality of the adhesive has a great influence on the joint. So it is not very stable. At present, the well-known adhesives in China are used in the domestically-used conveyor belts such as Shengka SK811 conveyor belt rubber and LDJ243 series.

Conveyor belt hot vulcanization joint method

Conveyor belt joints have proven to be the most ideal joint method in many years of actual combat, which can ensure high joint efficiency, is also very stable, and has a long joint life and is easy to grasp. However, there are disadvantages such as troublesome process, high cost, and long joint time. [1]

Rubber hard reason editor

The reason why the rubber of the conveyor belt is hot and vulcanized is relatively hard.

After the joint is realized on the conveyor belt, it is often found that the joint portion is harder than other parts. The process of vulcanization of the conveyor belt is actually a process in which the vulcanized rubber continues to crosslink. Since it needs to be heated and pressurized during vulcanization, and it takes a long time, after a long time of vulcanization, the hardness of the vulcanized rubber will increase, so the joint portion will be harder than other parts.

The strength at the conveyor belt joint is lower than that of the normal belt. Generally, when mechanically connected, the strength of the joint can only reach 40-50% of the strength of the belt. When the quality of the cold glue is better, the strength of the joint can reach 60-70%, and the strength of the hot joint can reach 80-90%. The joint method is correct and there is no quality defect). Since the strength of the joint is relatively low, if the bonding method is not correct, the strength of the joint will be lower, such as when the knife is opened, the next layer of cloth is damaged, the polishing is excessive, the length of the overlap is insufficient, the number of steps is insufficient, and the joint is glued. The performance of the rubber used is not good or has been caused by sulfur failure, excessive wire rope grinding, rusting of steel wire rope, etc., and the strength of the joint part will be greatly reduced. When used, the joint part is easily broken.

In addition, if the conveyor belt does not use the sealing glue, or the direction of the glue joint is wrong, the joint portion is prone to cracking (covering part).

Reference material