Aluminum alloy extrusion die for pre-running mould

Abstract

The invention discloses an aluminum alloy extrusion mold for a pre-running mould. The aluminum alloy extrusion mold comprises an upper mold and a lower mold; a plurality of flow dividing bridges are distributed on a material supply surface of the upper mold; a flow dividing hole is formed between two adjacent flow dividing bridges; a tongue core extending into the lower mold is arranged at the center of the upper mold; the tongue core comprises a first working tape, and the overlap joint surface of the first working tape is an inclined surface; a seaming room is arranged on a feeding surface of the lower mold; an outlet empty knife is arranged on a discharging surface; a second working tape is arranged between the seaming room and the outlet empty knife; the overlap joint surface of the second working tape is an inclined surface parallel to the overlap joint surface of the first working tape; an axial fit clearance of 0.3-0.6mm is reserved between the overlap joint surface of the firstworking tape and the overlap joint surface of the second working tape; and the angle of inclination of the inclined surface of the first working tape is 30-45 degrees. Compared with the prior art, the aluminum alloy extrusion mold for the pre-running mould disclosed by the invention has the advantages of being simple in structure, reasonable in design, long in service life and the like.

Description

Technical field [0001] The invention relates to the field of aluminum alloy extrusion die design, in particular to a pseudo-split die aluminum alloy extrusion die. Background technique [0002] In recent years, with the rapid development of aluminum alloy extrusion industry in China, people have more and more complex structural design requirements for aluminum alloy profiles, and there are more and more large cantilever aluminum alloy profiles. In the production process of the existing aluminum alloy profiles, ordinary flat die design or shielding method design methods are usually adopted. However, when this type of design method is used to produce large cantilever aluminum alloy profiles, it is easy to cause the cantilever to be easily skewed, inclined or broken. Extrude qualified products. The above-mentioned difficulties can be overcome by adopting the design of a false split mold. However, in the prior art, a direct-face-to-face false split mold design method is usually adop...

AI Technical Summary

Problems solved by technology

In the production process of existing aluminum alloy profiles, ordinary flat die design or shielding method is usually used. However, when this type of design method is used to produce large cantilever aluminum alloy profiles, it is easy to cause the cantilever to be easily crooked, inclined or broken, which is difficult Extrude qualified products

The above-mentioned difficulties can be overcome by adopting the design of the false splitter die. However, in the prior art, the design method of the direct-to-face false splitter die is usually used, and convex defects are prone to appear on the surface of the extruded profile, which affects the appearance, and in severe cases, it will affect the use of the profile.

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