Tension control device for bent pipe anti-corrosion composite belt

Abstract

The invention discloses a tension control device for a bent pipe anti-corrosion composite belt. The device is characterized in that wheel hubs are fixedly arranged on the outer sides of belt conveyingwheels, and annular bosses are fixedly arranged in the middles of the inner rings of the wheel hubs; limiting bosses are fixedly arranged on the front sides of the annular bosses; connecting shafts are fixedly arranged at the rear ends of friction wheels, and speed regulating motors are fixedly arranged at the rear ends of the connecting shafts; the friction wheels are in close contact with the annular bosses and the limiting bosses, and friction force adjusting devices are fixedly arranged at the center positions of the wheel hubs; and the friction force adjusting devices are fixedly connected with the belt conveying wheels, connecting plates are fixedly arranged at the joints of the connecting shafts and the speed regulating motors, and the connecting plates are fixedly hinged to toggleplates through pin shafts. According to the tension control device for the bent pipe anti-corrosion composite belt, the adhesion firmness of the polyethylene composite belt and the surface of a bentpipe is greatly improved, the winding and coating efficiency of the polyethylene composite belt is improved, the winding quality of the bent pipe anti-corrosion polyethylene composite belt is improved, and meanwhile, the corrosion resistance and the anti-stripping strength of the polyethylene composite belt are improved.

Description

technical field [0001] The invention belongs to the technical field of tension control of a composite tape wound by an anti-corrosion composite tape for an elbow, and in particular relates to a tension control device for an anti-corrosion composite tape for an elbow. Background technique [0002] At present, there are three main anti-corrosion forms of the outer layer of the elbow, which are double-layer fusion-bonded epoxy powder wrapped polypropylene adhesive tape, radiation cross-linked polyethylene heat shrinkable tape, and polyethylene composite tape anti-corrosion layer. Double-layer fusion-bonded epoxy powder wrapped polypropylene adhesive tape, consisting of an inner layer of fusion-bonded epoxy powder, an outer layer of modified fusion-bonded epoxy powder, and a polyethylene adhesive tape. The radiation cross-linked polyethylene heat shrinkable tape adopts the shrimp-like lap joint covering method. Due to the influence of the shape of the elbow, uneven lap joints an...

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Problems solved by technology

[0003] In the prior art, in the process of wrapping the polyethylene composite tape on the bend pipe by using the coating machine, the composite tape must be heated first, and the tensile strength of the heated composite tape will decrease obviously. If the tension force is too large, it may be damaged. If the composite tape is damaged during the winding process, even if it is not damaged, a large residual tensile stress will be generated, which will affect the anti-corrosion effect and life of the elbow; if the tension of the polyethylene composite tape is too small, it will directly affect the polyethylene The winding quality of the composite tape, the anti-corrosion performance and anti-peel strength of the polyethylene composite tape for the elbow; the inventor has developed a tension control device for the anti-corrosion composite tape for the elbow based on the defects in the prior art, which can wrap the polyethylene composite tape The tension is controlled in an appropriate range, so as to improve the winding quality of the bent pipe polyethylene composite tape

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