Method for separating metal of waste wire from plastic sheath and device thereof

Abstract

The invention relates to a method for separating a metal of a waste wire from a plastic sheath and a device thereof. The method at least comprises the following steps: the waste wire is cut into several sections; the cut wires are divided into long sections and short sections; the wires with long sections are returned to the inlet of a cutting process so as to be cut again; the metal wires of the wires with short sections are separated from the plastic sheaths thereof; the metal wires of the unpeeled wires with short sections are separated from the plastic sheaths thereof again; and plastic sheaths of the peeled wires are separated from the rubber-insulated wires of the metal wires. The invention improves cutting efficiency since a cutter has high cutting efficiency with out a screen mesh and the wires with long sections are returned to be cut, simultaneously greatly reduces power consumption, and improves the processing capability of machines. Two motion bodies with different relative velocity are used for peeling the unpeeled wire sections so as to lead the plastic sheath to be deformed and the plastic sheath to move relatively to the metal wire, and lay the foundation for subsequent separation.

Description

technical field [0001] The invention relates to a separation process method and device for metal and plastic sheaths of waste electric wires, belonging to the technical field of solid waste treatment and recycling, especially electronic waste recycling. Background technique [0002] With the advancement of technology and economic development, the amount of electric wires has increased significantly, and the amount of waste has also increased sharply. Wires are rich in copper and other non-ferrous metals and plastics, which are valuable resources. However, the two are closely connected and difficult to separate, and improper handling will pollute the environment. At present, the recycling of resources in waste cables (such as metal copper, aluminum, iron, and non-metallic plastics, rubber, etc.) mostly adopts mechanical methods, and the main processing equipment is peeling machine and copper rice machine. When the diameter of the metal conductor in the waste cable is large,...

AI Technical Summary

Problems solved by technology

So far, the copper rice machine equipment technology mainly has the following two problems: 1. The metal wire and the plastic skin are tightly combined and difficult to separate, especially the separation of the segmental metal wire and the plastic skin obtained by cutting the thin wire is more difficult. 2. During the cutting process, due to the inconsistency of the direction of the feed line, there are relatively long wire segments in the section of the cut line, and the metal wire and the plastic skin are difficult to peel off.

Therefore, in the actual process, a screen is installed at the lower part of the cutting machine, so that the long wire cannot pass through the screen, and it is cut repeatedly in the cutting machine, so that the dynamic and static knife will rub against the metal and plastic surface violently, which will not only cause severe wear of the knife, but also It also produces more metal and plastic loss and serious noise pollution, and the process consumes a lot of energy.

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