ZhongBo Industry and Mining Machinery Co.,Ltd main products: ordinary, heat-resistant (high temperature), acid and alkali resistant, oil resistant, cold resistant, wear resistant, flame retardant and different properties of cotton canvas (CC), nylon (NN) conveyor belt, polyester (EP) flat and large Angle gear sideband, decorative pattern, such as conveyor belt. And the roller, roller, stents, such as electric roller conveyor accessories. The transmission roller; Redirection roller; Electric drum; Magnetic drum magnetic pulley (); Roller; Stent; Lifting lugs; Tensioning device; Sweeper; Coupling, such as TD75 conveyor machinery and more than 200 kinds of products. Today, mainly to introduce to you together with the several elements of the conveyor belt.
Because the belt is running will be influenced by various factors and appear in the process of running deviation phenomenon, in order to ensure the service life of the joints, not tear the interface when belt running deviation, can adopt the method shown in (a). According to the running direction of the belt, will be made/convex 0 mouth shape.
The steps of making interfaces to the steps of production is the key to cutting. After calculation, measurement, marking, can remove the unwanted layer rubber and cloth. Operation, the size of the knife under the force, drag depth must be strictly controlled. If the drag is too deep, it will hurt and keep some cloth layer, lead to local fracture at that point in the future; Otherwise difficult to remove the excess part of the rubber and cloth layer.
So, this is the key technology of the bonding process, must by experienced people to or on-site command. Joint surface polishing step tore after good, early to close, to modify doesn't match the parts processing, then carries on the joint surface should be polished work. Grinding is the purpose of the layer on the cloth adhesion of rubber and sum grinding cloth layer of hair at the same time, in order to receive increased roughness of cloth layer, increase the bonding area
Effect of high bonding strength. Practice proves, under certain conditions, bonding strength will be improved with the increase of roughness.
But from a microscopic perspective, if the adhesive surface roughness is too large, produce convex concave phenomenon, can cause joint surface contact undesirable, forming defects, decreased bonding strength. Especially for illiquid adhesives, the influence is more significant. Grinding both must, therefore, remains on the cloth layer rubber wear off, will play wool cloth layer, and can't grinding cloth layer, otherwise affect the bonding effect. At the same time, also can develop the belt joint local fault hidden trouble.
In addition, to keep the adhesive surface clean, prevent contamination before bonding. Selection of adhesive and glue adhesive buckets of commonly, after mixed with the hardener stir all should be paste. Experience that is used to to dilute some of conveyor belt joint adhesive as well. Rubber thickness and shear strength diagram because of thin coating is not easy to produce flow and creep, bubbles and defects of the risk is small, the internal stress of interface will also be smaller. Therefore, to improve the sticky relay interface is good. But when sub too thin are easy to form lack of adhesive, coating of discontinuity, can also lower the bonding strength. So, when the coated adhesive, should be on the premise of ensure no shortage of glue, coating thickness as thin as possible as well.
Bonding time to determine when two parts of the interface for lap, will directly affect the effect of bonding. Daub is required after the adhesive with non-stick hand to lap, too early or too late will also cause the bonding quality. If in the summer, after the 1 glue joint air buy time is too long, the adhesive contains solvents evaporate faster, shorter form of curing process. Therefore, to hurry up to complete the operation. Low winter temperatures, adhesive coating solvent volatilization of slower, drying time can be appropriately extended, auxiliary heating and promote its volatile when necessary, to speed up the work progress. Lap joint operation accurate lap, make sure the belt on both ends of the center line on the same straight line, and good agreement each steps, avoid because of dislocation, jie, stick again and again. Best after lap joint, starting from the center line, with a hammer in order to knock on both sides. Had better use two pieces of flat plate will stay joint clamping, and bolts, wait for after adhesive curing loose, so that bonding effect is better.
Conclusion transport belt bonding operation difficulty is big, technical strong, must according to different conditions to choose the appropriate interface shape, reasonably determine the lap length, coupled with high performance, high adhesive strength, through scientific and careful operation, can get ideal result.
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