Mold suitable for extruding of small-inner-diameter pipe and use method thereof

Abstract

The invention relates to a pipe mold and particularly relates to a mold suitable for extruding of a small-inner-diameter pipe and a use method of the mold. The mold comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold body; the lower mold comprises a lower mold body; the upper part and the lower part in the upper mold body are respectively provided with a first fastening screw hole, and a boss installing screw hole is formed in the middle part of the upper mold body; feeding openings are formed in the periphery of the boss installing screw hole; the rear end of the outer part of the upper mold body is provided with a tail stopping hole; the lower mold body is provided with second fastening screw holes corresponding to the first fastening screw holes, a discharging opening is formed in the middle part of the lower mold body; the upper end of the discharging opening is provided with a working belt; the upper end of the working belt is provided with a welding chamber; the top end of the lower mold body is provided with a groove. The mold has the advantages that under the condition that a boss is broken in the extruding process, the boss only needs to be replaced, the scrapping of the mold is avoided, and the cost risk is greatly reduced; the use is simple and the operation is easy.

Description

technical field [0001] The invention relates to a pipe die, in particular to a die suitable for extruding a pipe with a small inner diameter and a use method thereof. Background technique [0002] At present, when extruding pipes, a splitter die is usually used, and the boss and the upper die are integrated. Its processing is simple and its concentricity is high. It is the most widely used pipe die on the market. However, when extruding a pipe with a small inner diameter and an inner diameter of less than 4mm, the boss is thinner and can withstand a lower pressure. When the raw material is heated unevenly or the machine is restarted, the boss is easily broken, causing damage to the upper die. The cost of rebuilding or scrapping is very high, resulting in shutdown and production stoppage, which will bring greater losses to the enterprise. In view of the above disadvantages, our company has developed a set of dies suitable for extrusion of small inner diameter pipes, which re...

AI Technical Summary

Problems solved by technology

However, when extruding a pipe with a small inner diameter and an inner diameter of less than 4mm, the boss is thinner and can withstand a lower pressure. When the raw material is heated unevenly or the machine is restarted, the boss is easily broken, causing damage to the upper die. The cost of rebuilding or scrapping is very high, resulting in downtime and production, which will bring greater losses to the enterprise

In view of the above disadvantages, our company has developed a set of dies suitable for extrusion of small inner diameter pipes, which reduces the trouble caused by the breaking of the boss

Images