Plastic-coated metal bar production line

Abstract

The invention relates to a plastic-coated metal bar production line, and relates to the technical field of plastic coating production. The plastic-coated metal bar production line comprises an uncoiling unit, a plastic coating unit, a cooling unit, a coiling unit and a thermal-welding unit, wherein an extrusion head of the plastic coating unit is provided with two extrusion ports; the thermal-welding unit is arranged between a first cooling unit and the coiling unit; the thermal-welding unit comprises a thermal-welding plate and a guide wheel set; the thermal-welding plate is used for thermally welding the side faces which are formed oppositely of two extrusion-molded semi-circular plastic materials; the guide wheel set comprises two limiting guide wheels; the sides, which are arranged oppositely, of the two semi-circular plastic materials pass through the space between two limiting guide wheels after being welded thermally; when the two semi-circular plastic materials pass through thespace between the two limiting guide wheels, the side faces, which are arranged oppositely, of the two semi-circular plastic materials are laminated; and a metal bar uncoiled by the uncoiling unit ispositioned between the two semi-circular plastic materials. The plastic-coated metal bar production line has the effect of keeping the wall thicknesses of plastic materials.

Description

technical field [0001] The invention relates to the technical field of plastic-coating production, in particular to a production line for plastic-coated metal strips. Background technique [0002] Plastic-coated wire with a sheath-core structure, these wires are made of a metal strip (wire or metal strip) covered with a layer of plastic, because of the characteristics of the surface-coated plastic material, different effects can be achieved , in recent years, from industrial use to household use, and then to wearable use, its use is becoming more and more extensive, and the market demand is increasing. [0003] Existing technology such as application publication number is a kind of production line disclosed by the Chinese patent of CN109877000A, comprising yarn creel, lead frame, extruder unit, caliper, circulating cooling water tank, drier, haul-off machine, collecting A thread unit and a control cabinet, wherein at least two coils of silk thread to be coated are wound on ...

AI Technical Summary

Problems solved by technology

[0008] However, the part of the metal strip (wire or metal strip) between the unwinding unit and the cooling unit is suspended, even if the metal strip (wire or metal strip) will contact the plastic material when passing through the overmolding unit, but The plastic material located in the overmolding unit is in a molten state and has poor stability, so the metal strip (wire or metal belt) cannot be effectively supported, and the metal strip (wire or metal belt) is being conveyed in the air, because If the tension and stretching are far away, the metal strip (wire or metal strip) will vibrate, causing the plastic material covered on the surface of the metal strip (wire or metal strip) to be squeezed. When it is large, the plastic material coated on the surface of the metal strip will even have thin-walled features, so it needs to be improved

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