Interlocking armored forming die and process

Abstract

The invention provides an interlocking armored forming die and process. The interlocking armored forming die comprises a pair of rollers and a guide rail, wherein the rollers are divided into a fixed roller and an adjusting roller; the guide rail is arranged along with the direction of an extension line meshed with the pair of rollers; a channel is formed in the middle of the guide rail; and the end, which is far away from the rollers, of the guide rail is provided with a forming hook towards the rollers. The interlocking armored machining process comprises the following steps: pre-forming a metal strip through an active feeding roller, passing through the channel of the guide rail, and armoring the forming hook at the end of the guide rail to a cable core. Various forming angles of the rollers are adjusted, the repeated verification proves that the metal strip is naturally formed and is in smooth in transition, a good armoring effect is achieved, the requirements of impact test can be met, the product quality is guaranteed, and the difficulty in the production process is reduced.

Description

technical field [0001] The invention belongs to the technical field of cable equipment, and in particular relates to an interlocking armor forming mold and a process. Background technique [0002] Driven by the market, as the power line network has higher and higher requirements for cable performance, metal tape armored cables (MC cables) have adapted to the needs of market development. MC cables are Metal-Clad Cables, and the outer layer of the cable is a metal tape. The armor layer, the inner core, the voltage level is 600V or 2000V, and it is a round cable structure. The core uses UL66 (device wire), UL83 (thermoplastic wire and cable), UL44 (thermoset wire and cable), and the nominal cross-section is 18AWG~ 2000kcmil, temperature resistance grade 75℃~200℃. The outer layer of the finished cable is an armor layer composed of a layer of interlocking armored metal tapes. The armor layer should be covered from the beginning to the end to form a cable core. The cable core can...

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Problems solved by technology

[0003] However, the MC cables processed by the current interlocking armor forming die cannot meet the requirements of cable impact resistance and bending resistance, and mainly have the following defects. The relationship between the feeding metal strips is not well adjusted, resulting in metal strip accumulation or broken strips; 2. The appearance of the armor is not good, and sharp parts are easy to produce, and the insulation cannot be guaranteed when laying cables

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