Pre-former for steel cord or steel wire rope

Abstract

The invention provides a pre-former for a steel cord or a steel wire rope. The pre-former comprises a base, an upper adjusting disc, a middle adjusting disc, a lower adjusting disc and multiple studs. A through hole is formed in the center of the base, and a hollow shaft is arranged in the through hole. The upper adjusting disc, the middle adjusting disc and the lower adjusting disc are each a circular truncated cone with a center hole, the outer surfaces of the three adjusting discs are located on the same straight line, and a circular truncated cone structure with the upper portion larger than the lower portion is formed. The hollow shaft of the base is sleeved with the upper adjusting disc, the middle adjusting disc and the lower adjusting disc, the upper adjusting disc and the lower adjusting disc are fixedly connected to the hollow shaft, and the middle adjusting disc is of a rotatable structure. At least one row of screw holes are evenly formed in the outer side face of each adjusting disc in the circumferential direction, the screw holes of the upper adjusting disc correspond to the screw holes of the lower adjusting disc, in other words, the screw holes of the upper adjusting disc and the screw holes of the lower adjusting disc are located on the same straight line. Each stud is provided with a deformation wheel in a penetrating mode, and is locked through a nut. One ends of the studs are arranged in any rows of screw holes in the outer side faces of the upper adjusting disc, the middle adjusting disc and the lower adjusting disc. By means of the pre-former, free adjustment in all directions can be achieved, and abrasion to a steel wire can be remarkably lowered.

Description

Technical field [0001] The present invention relates to the manufacturing technology of steel cords or steel cords, in particular to a pre-deformer for steel cords or steel cords. Background technique [0002] In the existing steel cord for engineering tires or steel wire rope twisting technology for lifting, conveying, etc., because the cord structure is complex and the diameter is relatively thick, it is generally not deformed before the rope is formed, and straightened between the ropes. To adjust the residual torsion and improve the rope condition, the production process is extremely unstable, especially for the structure with strict requirements on the rope quality and residual torsion of the steel cord, and the strands are not deformed, and all the torsion passes The straightener increases the amount of press-in adjustment. As a result, the produced cord is easy to loose and has poor rubber penetration performance, which not only affects the production efficiency and qualit...

AI Technical Summary

Problems solved by technology

[0002] In the existing steel cord stranding technology for engineering tires or steel wire ropes for lifting, transmission, etc., because the cord structure is complex and the diameter is relatively thick, it is generally not deformed before the rope is formed, and it is straightened after the rope is formed. The function of the device is used to adjust the residual torsion and improve the condition of the rope. The production process is extremely unstable, especially in the structure where the steel cord has strict requirements on the quality of the rope and the residual torsion. The straightener increases the adjustment of the press-in amount, and as a result, the produced cord is easy to loose and has poor glue penetration performance, which not only affects the production efficiency and quality of the tire manufacturer, but also affects the service life of the tire;

[0003] Some manufacturers have recognized the above-mentioned production defects and use a disc-shaped deformer whose size is larger than the thread-dividing hole, so a height difference will be formed after the cord comes out of the thread-dividing hole, and the cord is twisted after passing through the disc to form a Rope, there will be a height difference, so as to achieve deformation, the advantage of this deformer is that it can be used for all the number of strands, the disadvantage is that the deformation amount is fixed, and the deformation amount cannot be adjusted

[0004] There is also a flat three-blade pre-deformation. This pre-deformation is to displace the three alloy sheets with slotted openings through the spacer ring, so that the steel wire is completely deformed on the deformation sheet before twisting, and a certain amount of deformation is obtained. Although this kind of pre-deformation is adjustable in terms of wavelength and wave height deformation, the three pieces of cemented carbide are exactly the same in size, and the steel wire is on a horizontal plane when it is deformed, which is inconsistent with the steel wire forming state, resulting in the deformation of the steel wire when passing through the last piece of deformer. The friction of the deformer is different from that of the previous two pieces. In addition, the steel wire is in direct contact with the deformer, which greatly damages the surface of the steel wire. The above two deformers cannot realize all-round adjustment of the steel wire, especially the adjustment of the deformation wave radian, and The adjustment range is small, so the adjustment effect on the residual torsion of the wire is limited

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