CN102296472A

CN102296472A - Method for stranding steel cord into rope

Info

Publication number: CN102296472A
Application number: CN2011102073855A
Authority: CN
Inventors: 刘克强; 张松桥; 李昕月; 高志芳; 曾燕
Original assignee: Hubei Sanjiang Space Jiangbei Mechanical Engineering Co Ltd
Current assignee: Hubei Sanjiang Space Jiangbei Mechanical Engineering Co Ltd
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2011-12-28

Abstract

The invention discloses a method for stranding a steel cord into a rope, which comprises the following working procedures: paying off, twisting and taking up, wherein the working procedure of paying off is characterized in that a core wire and a monofilament rotate to pay off by a flywheel disk in a paying off device, and a line concentration nozzle is used for bundling; in the working procedure of twisting, the bundled core wire and the monofilament are twisted into a rope by an external twisting device and are output; and in the working procedure of taking up, the core wire and the monofilament which are twisted into the rope have opposite rotation direction when passing through a flywheel disk in a taking up device and the flywheel disk in the paying off device so as to realize the purpose of twisting into the rope without residue. According to the method for stranding the steel cord into the rope, which is disclosed by the invention, the residual stress of a cord thread can be effectively lowered, and the residual torsion of a final product and balanced core thread torsion can be controlled. In the method, the influence of torsion stress does not need to be offset by equipment with a complex structure and a large volume, the method is simple to operate, and the obtained product has good quality.

Description

The steel cord is plied to the method for rope

Technical field

The present invention relates to steel cord production technology, refer to that particularly a kind of steel cord is plied to the method for rope.

Background technology

In the production process of steel cord, forming clocklike helicoidal structure needs two motions, promptly main body rotatablely move with become rope after straight line move.Steel wire has modes of texturing such as flexural deformation, stretcher strain, torsional deflection, crimp in forming process.Wherein, the principal element that influences monofilament distortion back stress is flexural deformation and torsional deflection.Flexural deformation is the necessary mode of texturing that forms helicoidal structure, consumes most of twisting function.And the stress of torsional deflection and generation thereof will influence the quality of product, should be eliminated or alleviate.Usually, in steel cord plying process, force bending, be bent and deformed and offset the distorting stress influence by crooked pre-former.But because complex structure, the volume of pre-former are bigger, under multifilament plying situation, equipment volume is excessive, the unstable product quality that can influence the steel cord of monofilament tension force.

Summary of the invention

The objective of the invention is to overcome the existing in prior technology deficiency, provide a kind of steel cord that reduces the cord residual stress to be plied to the method for rope.

For achieving the above object, the designed steel cord of the present invention is plied to the method for rope, comprises unwrapping wire, crosses sth. made by twisting, wire-drawing process, and in the described unwrapping wire operation, heart yearn and monofilament are by the rotation of the Flywheel disc in actinobacillus device unwrapping wire, then by line concentration mouth boundling; The described mistake in the sth. made by twisting operation, the heart yearn of boundling and monofilament are twisted into rope and output by the outer twist device of crossing; In the described wire-drawing process, direction of rotation is opposite when being twisted into the heart yearn of rope and monofilament via Flywheel disc in the take-up and the Flywheel disc in the actinobacillus device, thereby realizes that no Residual torsion becomes to restrict.

Further, the linear velocity of the Flywheel disc in the Flywheel disc in the described actinobacillus device and the take-up is identical, direction of rotation is opposite.Like this, monofilament is identical through twice rotating speed, direction of rotation is opposite reverse after, make that monofilament has only carried out bending in whole one-tenth rope process, thereby the Residual torsion and the balance core thigh of control final products reverse.

Beneficial effect of the present invention is: designed steel cord is plied in the rope method, reversing that unwrapping wire gives that the monofilament rotating speed is identical, direction of rotation is opposite during with take-up, make monofilament only carry out bending in the rope process whole being plied to, do not have and reverse production, effectively reduce the residual stress of cord, thereby the Residual torsion and the balance core thigh of control final products reverse.The present invention need not use the influence that complex structure, equipment that volume is bigger are offset distorting stress, has simple to operate, the measured characteristics of products obtained therefrom matter.

Description of drawings

Fig. 1 is plied to the operation schematic diagram of rope for steel cord of the present invention.

Fig. 2 is the enlarged diagram of unwrapping wire operation among Fig. 1.

Fig. 3 is the enlarged diagram of twisting operation among Fig. 1.

Fig. 4 is the enlarged diagram of wire-drawing process among Fig. 1.

The specific embodiment

The present invention is described in further detail below in conjunction with the drawings and specific embodiments.

The steel cord is plied to the rope process shown in Fig. 1～4, comprises unwrapping wire, crosses sth. made by twisting, wire-drawing process.In the unwrapping wire operation, heart yearn unwrapping wire part A and monofilament unwrapping wire part B are by the 1.1 rotation unwrapping wire of the Flywheel disc in the actinobacillus device 1, then by line concentration mouth 2 boundlings.In crossing the sth. made by twisting operation, the heart yearn of boundling and monofilament are twisted into rope and output by the outer twist device 3 of crossing.In wire-drawing process, the heart yearn that is twisted into rope and monofilament through the Flywheel disc in the take-up 4 4.1 realize with through identical, the direction phase despining take-up of Flywheel disc 1.1 linear velocities in the actinobacillus device 1, thereby realize that no Residual torsion one-tenth restricts.Particularly:

The principle of unwrapping wire operation as shown in Figure 2.The unwrapping wire mode of heart yearn and monofilament is identical, heart yearn and monofilament are by the 1.2 rotation unwrapping wire of the I-beam wheel in the actinobacillus device 1, after the right wire-crossing wheel 1.3 of process actinobacillus device 1 is crossed line, on Flywheel disc 1.1, make S to the rotation unwrapping wire, through the left wire-crossing wheel 1.4 of actinobacillus device 1 heart yearn and monofilament are pulled out again, by line concentration mouth 2 with heart yearn and monofilament boundling.In the unwrapping wire operation, silk is twisted with the fingers for S.

Cross twist with the fingers operation principle as shown in Figure 3.In this process, the outer twist device 3 whole S that do that cross are to rotation.The heart yearn of boundling and monofilament are first makes Z to rotation between the exit position of the left wire-crossing wheel 3.1 of twist device 3 and line concentration mouth 2 outside excessively, cross outside between the right wire-crossing wheel 3.2 of twist device 3 and the outer output of crossing twist device 3 again and make S to rotation, filum terminale does not reverse in the whole process that is twisted into rope.

The principle of wire-drawing process as shown in Figure 4.Cross rope that twist device 3 makes earlier through the right axle wire-crossing wheel 4.2 of take-up 4 through outer, make Z to rotation by the Flywheel disc 4.1 of take-up 4 then, pull out through the left side axle wire-crossing wheel 4.3 of take-up 4 again, and take-up is to the I-beam wheel 4.4 of take-up 4, thereby finishes the rope that is plied to of steel cord.In wire-drawing process, silk is twisted with the fingers for Z.

Above-mentioned S is defined as follows to rotating to rotation and Z: when with strand or cord is vertical when placing, if the screw line around the central shaft of strand or cord is consistent with the incline direction in alphabetical " S " centre, then claim this strand or cord to twist with the fingers or left-hand lay for " S ", promptly S is to rotation.Consistent as screw line with the incline direction in the centre of letter " Z " around the central shaft of strand or cord, then claim this strand or cord to be " Z " sth. made by twisting or right-laid, promptly Z is to rotation.

The present invention adds a S to rotation to monofilament earlier, when arriving the take-up position when the monofilament unwrapping wire, Z is to rotation again for monofilament, and monofilament only carries out bending whole being plied in the rope process like this, does not have and reverses production, can effectively reduce residual stress, finally obtain high-quality steel cord.

Claims

1. a steel cord is plied to the method for rope, comprise unwrapping wire, cross twist with the fingers, wire-drawing process, it is characterized in that:

In the described unwrapping wire operation, heart yearn and monofilament are by the rotation of the Flywheel disc (1.1) in the actinobacillus device (1) unwrapping wire, then by line concentration mouth (2) boundling;

The described mistake in the sth. made by twisting operation, the heart yearn of boundling and monofilament are twisted into rope and output by the outer twist device (3) of crossing;

In the described wire-drawing process, direction of rotation is opposite when being twisted into the heart yearn of rope and monofilament via Flywheel disc (4.1) in the take-up (4) and the Flywheel disc (1.1) in the actinobacillus device (1), thereby realizes that no Residual torsion becomes to restrict.

2. steel cord according to claim 1 is plied to the method for rope, it is characterized in that: the linear velocity of the Flywheel disc (4.1) in the Flywheel disc (1.1) in the described actinobacillus device (1) and the take-up (4) is identical, direction of rotation is opposite.