RU2097460C1 - Squeezing apparatus for cable twisting machine - Google Patents

Abstract

FIELD: production of steel wire cables by plastic working method. SUBSTANCE: squeezing apparatus has deforming rolls mounted on rotor of cable twisting machine and made in the form of equally spaced relation about shaft of rotor of holders, which are made in the form of cassettes. Cassettes are mounted at sides of regular polygon. Each cassette carries pair of rolls mounted for joint controllable movement along respective side of polygon. At least one cassette is mounted for regulated radial movement. Squeezing rolls may be mounted in each cassette for turning in opposite directions relative to plane extending through centers of adjacent deformation zones. EFFECT: increased efficiency, wider operational capabilities and improved quality of cables. 2 cl, 5 dwg

Description

 The invention relates to steel-wire rope and cable production, and in particular to equipment for the manufacture of shaped-strand ropes or cables by the method of plastic deformation of the original round strands into a shaped profile in the process of twisting a rope or cable.

A crimping device for a rope machine is known, comprising rolling units according to the number of twisted elements, each made in the form of several rollers and evenly spaced around the axis of the rotor of the machine; moreover, the rollers have a working surface with a rectilinear generatrix and can be inclined to the axis of the strand at an angle mainly of 10-20 ^o [1]
Also known is a crimping device for a rope machine, containing deforming assemblies (restricting devices) mounted on the rotor of the machine, made in the form of cassettes holders evenly installed around the rotor axis, each of which has a pair of rollers [2]
The disadvantage of these devices is the individual adjustment of each deforming node, making it difficult to obtain uniform compression and tension of all strands, which is necessary to improve the quality of the rope.

 The objective of the invention is to develop the design of a crimping device that provides improved quality of the rope due to the uniform compression and tension of all strands.

 This is achieved by the fact that in the crimping device to the roping machine, containing deforming units mounted on the rotor of the machine, made in the form of cassettes holders evenly mounted around the axis of the rotor, each of which has a pair of rollers, the cassettes are mounted on the sides of a regular polygon. In this case, a pair of rollers of each cartridge is installed with the possibility of joint adjusting movement along the corresponding side of the polygon and at least one of the cartridges is installed with the possibility of adjusting radial movement.

 In each cassette, crimp rollers can be installed with a turn in opposite directions relative to a plane passing through the centers of adjacent deformation centers.

 The technical result of the invention lies in the fact that a closed power connection is formed between all deforming nodes, providing automatic alignment of the deforming forces of all strands. In this case, the transfer of forces between deforming nodes is carried out along the sides of the polygon. Due to this, automatic balancing of the compression forces is achieved.

 In FIG. 1 shows a diagram of a crimping device; figure 2 view a in figure 1; figure 3 diagram of the installation of crimp rollers with an inclination to the axis of the deformation zone; in FIG. 4 diagram of the reversal of rollers belonging to one cartridge; figure 5 is a diagram of the forces in the crimping device.

 The crimping device (figure 1) contains a disk 2 mounted on the rotor 1 of the rope machine, on which the guides 3 are fixed.

 In the guides 3 mounted deforming nodes made in the form of uniformly mounted around the axis of the rotor 1 holders in the form of mounted on the sides of the regular polygon cassettes 4 (figure 2), on each of which there is a pair of rollers 5.

 In this case, a pair of rollers 5 of each cartridge 4 is installed with the possibility of joint adjustment movement along the corresponding side of the polygon.

 Each of the deformation zones I, II, VI, containing a pair of rollers 5, is formed by adjacent cassettes 4.

 The working grooves of the rollers 5 are profiled to a predetermined shape of the crimped element 6. For example, figure 2 shows the profile of the rollers for deformation of a round strand into an oval profile, but there may be a trihedral profile and any other.

 Behind the deforming nodes along the curled elements 6 there are fixed twisting dies 7 (Fig. 1), in which a rope 8 is formed.

 For filling elements 6 into deforming nodes, at least one of the guides 3 and, therefore, one cassette 4 (two opposite in FIG. 2) is mounted with the possibility of radial adjustment movement relative to the axis of the rope machine.

To ensure screw rolling of the strands in accordance with the kinematics of twisting it into the rope, it is possible to install crimp rollers obliquely with respect to the axis of the compressible strand (Fig. 3). In this case, the rollers 5 (Figs. 3, 4) belonging to one cartridge 4 are mounted with a turn in opposite directions from the plane γ passing through the centers of the deformation zones I and II. The angle of inclination v of the rollers 5 to the plane g can be 10-20 ^o .

 The crimping device operates as follows.

 Before starting work, the movable guides are diverted to a larger radius (shown in dotted lines in FIG. 2). In this case, the force connection between the nodes is opened and the remaining cassettes 4 are able to freely displace in the guides 3, and the working gauges of the deforming nodes are relaxed.

 In this position, elements 6 to be crimped and twisted are pulled through the deformation nodes and twisting dies.

 After that, the movable guides are returned to the working position using a push device (not shown), while simultaneously clamping the deforming nodes and deforming the elements 6 into a predetermined shaped profile.

 Then they turn on the rope machine, twist a small test segment of the rope, check the compression parameters of the strands and twist the rope, if necessary, adjust the compression by radial movement of the cassettes and turn on the machine for continuous operation.

и перпендикулярно им

. Усилия

уравновешивают друг друга, а

уравновешиваются поперечными реакциями направляющих. Исходя из условий равновесия кассет 4 с обжимными роликами (без учета сил трения), имеем

и т.д. следовательно,

Так как в пределах точности изготовления и сборки устройства все углы α одинаковы и

;

и т.д. имеем
N₁=N₂=N₆,
т. е. все усилия обжатия свиваемых элементов во всех деформирующих узлах одинаковы. Этим достигается равномерное обжатие всех элементов каната и улучшение за счет этого его качества.In the process, the device in the deformation zones on the rollers act forces N ₁ , N ₂ , N ₆ (figure 5). We lay out these efforts on the projection along the cassettes

and perpendicular to them

. Efforts

balance each other, and

balanced by the transverse reactions of the guides. Based on the equilibrium conditions of cassettes 4 with crimp rollers (excluding friction forces), we have

etc. hence,

Since, within the accuracy of manufacturing and assembling the device, all angles α are the same and

;

etc. we have
N ₁ = N ₂ = N ₆ ,
that is, all the compression efforts of the stitched elements in all deforming nodes are the same. This ensures uniform compression of all elements of the rope and an improvement due to this quality.

 The equality of the compression force is the result of force symmetry in a closed force polygon in the proposed device.

и т.д.). При этом уменьшаются и силы трения, препятствующие смещению кассет с обжимными роликами в направляющих.Above is a description of the device and the analysis of forces on the example of a six-node device (for the manufacture of a six-strand rope). However, all the above considerations remain valid for devices with a different number of nodes, and the more nodes, the better the conditions for equalizing the compression forces of all elements. This is explained by the fact that with an increase in the number of sides in the force polygon, the angle α decreases and, accordingly, the stress components perpendicular to the guides decrease (

etc.). At the same time, friction forces that prevent the displacement of cassettes with crimp rollers in the guides are also reduced.

Thanks to the use of such a device, the compression forces are equalized in the deforming nodes and, as a result, the tension of the twisted elements is aligned, which improves the quality of the rope and increases its durability when working on blocks and drums by at least 10%
Sources of information
1. USSR author's certificate N 316343, cl. D 07 B 5/10.

 2. US patent N 4604861, CL. D 07 B 5/10.

Claims (2)

 1. Crimping device to the rope machine, containing deforming units mounted on the rotor of the machine, made in the form of cassettes holders evenly mounted around the axis of the rotor, each of which has a pair of rollers, characterized in that the cassettes are mounted on the sides of a regular polygon, a pair of rollers of each cartridge is installed with the possibility of joint adjustment movement along the corresponding side of the polygon.  2. The device according to p. 1, characterized in that at least one of the cassettes is installed with the possibility of adjusting radial movement.

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