The tube type strand twisting machine twists the strands according to the technical requirements of the steel wire rope for the strands. The twist direction, twist distance, strand diameter, core diameter, and the diameter, tensile strength, toughness number, coating quality, length, etc. of the steel wire used for twisting the strands must meet the specified requirements. Based on this, the rope making steel wire, I-shaped wheel diameter, dividing disc, twist pitch tooth wheel, deformer, pressing tile, etc. should be selected and matched. The selection of the twisting machine should also be carefully carried out to improve the efficiency of twisting.

Install the recoiled rope making steel wire I-shaped wheel onto the twisting machine I-shaped wheel frame and lock it tightly, so that the ends of each steel wire pass through the wire passing hole and dividing disc of the twisting machine, pass through the wire pressing tile, and the steel wire heads are bundled and connected to the traction wheel lead. Select and match the twist pitch teeth according to the twist pitch requirements, adjust the tightness of each steel wire to ensure consistent tension during the twisting process. Adjust the position of the pressure line tile and tighten it, then adjust the parameters of the deformer. After adjustment, you can slowly drive. When the twisting distance and diameter of the strand meet the requirements, it can be switched to normal twisting. The strand on the traction wheel should be wrapped for a certain number of turns, usually 5-6 turns, to ensure that the strand led out by the wire pressing tile has a certain tension. The twisted strands pass through the winding device and are wound around the winding wheel by the winding device. The length of the stock is indicated by a meter.

The twisting of each layer of steel wire in the point contact wire rope strand is carried out separately. When selecting a twisting machine, the number of I-shaped wheels must be greater than or equal to the number of steel wires in that layer. For the strands with a structure of 1+6+12+18, the twisting process is divided into three steps, which are carried out on a twisting machine with 6 I-shaped wheels, 12 I-shaped wheels, and 18 I-shaped wheels. The twisting of wire rope strands in line contact is completed in one go, and all the steel wires (two or three layers) that make up the strands are twisted in one go on the same machine. Therefore, the twisting of wire contact strands generally requires the use of a twisting machine with multiple I-shaped wheels. For example, the strands of the (1+7+7/7+14) structure are twisted using a twisting machine with 36 I-shaped wheels. The twisting of point line contact strands is divided into two twists on two twisting machines, for example, (1+6)+12+12 strands, (1+6) strands are twisted on a 6-wheel twisting machine, and the other two layers are twisted on a 24 wheel twisting machine. The twisting of irregular strand steel wire ropes and steel cord strands is carried out on specialized equipment.