Hot extrusion die of large triangle tube

Abstract

The invention relates to a hot extrusion mould of a large triangular duct, which is mainly used for the hot extrusion of the large triangular duct. The mould is formed by the assembly and combination of an upper mold (1) and a lower mold (2), the feeding surface of the upper mold (1) is uniformly distributed with six diversion holes (1.7) which take a form that the angle of an external reaming (1.2) is not less than that of an internal reaming (1.3), the middle of the discharge surface of the upper mold (1) adopts a large rectangular head mold core (1.1), the periphery adopts a mode of a down bridge (1.5), the middle of the lower mold (2) is provided with a welding chamber (2.1) and a triangular mold cavity (2.2), the three angle positions of the triangular mold cavity (2.2) are arranged directly below the diversion holes (1.7) at the corresponding positions of the upper mold (1) and correspond to the three angle positions of the lower mold cavity (2.2), the bridge position (1.4) at the corresponding place directly above the three angle positions of the lower mold cavity adopts the mode of inverted bridge with wide top and narrow bottom. The adoption of the mould can manufacture products such as the large triangular ducts, etc. effectively on a relatively small extruder and avoid bridge crack and welding strips, and the mold has long service life.

Description

(1) Technical field [0001] The invention relates to a hot extrusion die. Mainly used for hot extrusion of large triangular tubes. It belongs to the technical field of mold processing. (2) Background technology [0002] Large triangular tubes (Figure 7) are mainly used in billboards, road signs and other fields. Its uses are becoming wider and wider, and the market demand is also increasing. With the continuous development of society, the constant change of market demand and the intensification of market competition, a high-quality, high-standard large-scale triangular tube is particularly scarce in the market, and the supply is in short supply. This has brought huge business opportunities to mold manufacturers. Many manufacturers are taking action, but the products they make are difficult to meet customer requirements, and their own costs remain high, and molds are easily scrapped. [0003] As we all know, the large triangular tube hot extrusion mold is a large square he...

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