Strand compressing mould and strand compressing mould component

Abstract

The invention discloses a strand compressing mould and a strand compressing mould component, and belongs to the field of a strand device. The strand compressing mould comprises a mould main body arranged with a stranding hole; the mould main body is internally provided with an annular cooling cavity, and an inlet pipe and an outlet pipe which are connected with the cooling cavity; the stranding hole is composed of two first circular truncated cone shaped holes arranged symmetrically and second holes connected with first holes. The strand compressing mould can perform heat exchange and coolingon the border of the strand and the compressing mould, solve the problem of rising mould temperature, guarantee the product quality, improve the production efficiency and extend the service life of the mould. The invention further provides a strand compressing mould component including the strand compressing mould.

Description

Technical field [0001] The invention relates to the field of stranding equipment, and in particular to a strand pressing mold and a strand pressing mold assembly. Background technique [0002] Stranded wire compression mould is a device used to tighten cables. As wire and cable equipment manufacturers continue to update and upgrade production equipment, high-efficiency stranding equipment has emerged, but production equipment manufacturers cannot provide Corresponding auxiliary implementation, such as stranding die, etc. At present, the working area of ​​the stranded wire drawing and pressing die structure provided on the market is composed of alloy material and a fixed metal sleeve. When stranding the wire, the die is fixed on the paralleling die seat, and the multiple monofilaments that make up the conductor are arranged through the process structure. Tighten the center hole of the compression mold, and then pull the conductor forward by the traction machine of the stranding e...

AI Technical Summary

Problems solved by technology

[0002] Stranded wire compression die is a device used to tighten cables. As wire and cable equipment manufacturers continue to update and upgrade production equipment, high-efficiency stranding equipment has also emerged, but production equipment manufacturers cannot provide Corresponding auxiliary implementation, such as twisted wire mold, etc.

At present, the working area of ​​the stranded wire drawing and pressing die structure provided on the market is composed of alloy materials plus a fixed metal sleeve. When stranded, the die is fixed on the paralleling die seat, and the multi-heeled single wires that make up the conductor are arranged and threaded according to the process structure. Over-tighten the center hole of the compression die, and then pull the conductor forward through the tractor of the stranding equipment. This process is caused by the deformation of the monofilament after it passes through the compression and drawing die, due to the contact between the monofilament and the inner hole wall of the compression die. Considerable friction, this large friction will cause the temperature of the conductor and the pressing mold to rise rapidly, part of the heat of the pressing mold is transferred to the conductor, and most of the rest of the heat is eliminated by contact with the air. If it is a stranding equipment with a low compression coefficient or low efficiency, the heat generated by friction is not enough to affect the mold, but a stranding equipment with a compression coefficient of more than 0.9 or a high speed, when producing a compacted conductor, continues The sharply rising temperature has exceeded the temperature requirement during mold production, resulting in a structural change in the treatment material on the surface of the inner hole of the mold. Roughness or hairs appear on the surface, resulting in the quality of the conductor not meeting the standard requirements, and it is easy to damage the treatment material on the surface of the inner hole of the mold, reducing the service life of the mold

[0003] In this case, the enterprise generally reduces the production speed to reduce the temperature of the mold or adopts the method of alcohol titration, hangs the alcohol bottle through the burette and evenly drops the alcohol on the outer surface of the compact mold for heat dissipation treatment to achieve high-efficiency production , but the method of alcohol titration has high requirements on the purity of alcohol, especially when aluminum conductors are twisted, if 75% alcohol is used for titration to dissipate heat, if you do not pay attention to make the alcohol drip into the compact mold, because the moisture in the alcohol and After the aluminum monofilament is in contact, a greater contact force will be generated, which will easily cause the aluminum monofilament to break and cause the product quality to be unqualified. Moreover, this method cannot effectively deal with conductor stranding with high compression coefficient and high production efficiency.

[0004] The invention patent with the patent authorization number CN104269229B provides an aluminum alloy cable compression stranded conductor stranding mold, which includes a mold base, which is equipped with a strand compression mold, a compressed air air ring and a compressed air inlet hole; The stranded wire compression mold includes the outer mold sleeve and the mold core assembled in the mold sleeve; the mold core is provided with the first channel for compressing the stranded conductor strand; the outlet of the first channel is connected with the first channel set inside the mold sleeve Two-channel connection; the compressed air air ring is set at the outlet of the second channel, and the compressed air air ring is provided with the first set of air holes blowing to the direction of the stranded wire compression die and the second set of air holes blowing to the stranded conductor , which can carry out heat dissipation and pressure blowing around the stranded conductor and the stranded wire compression mold through the first and second groups of air holes on the compressed air air ring, thereby realizing and improving the packing density of the stranded conductor and the surface roughness of the conductor At the same time, it also eliminates the aluminum chips, aluminum powder and oil stains on the surface of the original alloy single wire produced during the helical twisting and pressing process, but it cannot cool down the mold and cannot avoid the high temperature caused by friction during the stranding operation. Dies cause damage and affect strand quality

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