Die assembly for manufacturing air-blowing pipe for cable

Abstract

The invention relates to a die assembly for manufacturing an air-blowing pipe for a cable. The die assembly is characterized in that the die assembly comprises a die core, a die cover and a plunger body; the die core comprises protruding die core bodies and die core grooves, and the protruding die core bodies and the die core grooves are arranged at intervals to form a cylindrical body with a die core cavity; one end of the cylindrical body is sealed, and the outer side of the sealed end is provided with a die core connector; a die core connection hole is formed in the die core connector; the die cover is provided with a die cover body; a die cover cavity is formed in the die cover body; an injection molding hole is formed in the die cover body; and the plunger body comprises a plunger and a plunger connector. When the air-blowing pipe for the cable is manufactured, the die cover is located outside the die core, the die core is located in the die cover cavity, a part of the plunger body is located in the die core cavity, and the other part extends out of the die core cavity; and the protruding die core bodies do not make contact with the inner wall of the die cover cavity, and the die core cavity does not exceed the end face of the die cover. The die assembly has the beneficial effects that a die structure is simple, easy to manufacture, resistant to wear and easy to use; and the manufactured air-blowing pipe is stable in quality, reliable and resistant to twist.

Description

[0001] This application is a divisional application for an invention patent with an application date of May 26, 2014, titled: A mold assembly for manufacturing air-blown pipes for cables, and application number: 201410224423.1. technical field [0002] The invention belongs to the technical field of molds and pipes, in particular to a mold assembly for manufacturing air-blown pipes for cables. Background technique [0003] With the rapid development of electric power, communication and other industries, more and more cables are laid. On the one hand, because a large number of cables were laid overhead, the cables in the sky are very messy, which affects the appearance of the city. , has brought great potential safety hazards; for this reason, the country has promulgated corresponding laws, regulations and instructions, and the cables need to be laid in the ground. Cables are laid underground mainly through pipes and direct burial. The direct burial method requires excavation...

AI Technical Summary

Problems solved by technology

[0004] For large-diameter pipelines that have been laid underground, cables with small diameters and smooth surfaces can be directly pulled and laid if there is enough space in the pipeline. However, the construction progress of pulling and laying is slow and easily affects the cable The quality of the cable, especially the optical cable, once the quality of the cable is damaged in the construction, the cost of taking the cable out or restoring its performance is very huge

[0005] For larger cities, the existing cable duct resources are quite tight, usually renting a 1KM duct with a diameter of about 18mm, the annual price is about 200,000 yuan, so it is quite expensive; even so, there are still many areas of operation Businesses and non-operators affect the progress of the project because they cannot rent pipeline resources, and some even have to abandon the original project

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