Hot extrusion mould for producing aluminum roller shutter door guide groove

Abstract

The invention discloses a hot extrusion mould for producing an aluminum roller shutter door guide groove. The hot extrusion mould is formed by an upper mould body and a lower mould body in an abutting joint mode, a welding chamber is arranged on the feeding face of the lower mould body, cavities and discharging holes are formed between the welding chamber and the discharging end of the lower mould body, and a cantilever beam is arranged at the central position of the lower mould body; six outer bridge sites and four inner bridge sites are arranged on the feeding face of the upper mould body, six circumferential flow dividing holes and one central flow dividing hole are formed between the outer bridge sites and the inner bridge sites, mould cores stretching into the cavities of the lower mould body are arranged at the positions, arranged on the inner bridge sites, of the top and the bottom of the central flow dividing hole, an auxiliary bridge is arranged in the central flow dividing hole, one end of the auxiliary bridge is arranged inside the central flow dividing hole, and the other end of the auxiliary bridge is provided with a fake male head which stretches out of the central flow dividing hole and directly faces the cantilever beam of the lower mould body. According to the hot extrusion mould, the stability of the material flow is improved well, the direct impact of the material flow of the central flow dividing hole to the cantilever beam of the lower mould body can be avoided, the service life of the mould is prolonged, forming of bars is stable, the size of the bars is precise, and the mould is mainly used for producing aluminum roller shutter door guide groove class cantilever bars.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy hot extrusion dies, in particular to a hot extrusion die used for producing aluminum rolling door guide grooves. Background technique [0002] At present, the hot extrusion die for producing the guide groove of aluminum rolling shutter door is composed of upper die and lower die butt joint. The feeding surface of the lower mold is provided with a welding chamber, and a cavity and a discharge hole are arranged between the welding chamber and the discharge end of the lower mold. Since the guide groove of the aluminum rolling door is a cantilever type material, and the cantilever of the guide groove of the aluminum rolling door is relatively large, a larger cantilever beam will be arranged at the center of the lower mold. The feeding surface of the upper die is provided with six outer bridge positions and four inner bridge positions, and six circumferential distribution holes and a central di...

AI Technical Summary

Problems solved by technology

In the production process of this traditional hot extrusion die, the material flow velocity of the central split hole is faster than that of the six circumferential split holes, and the uneven outflow of the material flow leads to unstable profile molding.

The cantilever beam of the lower die is the weakest part of the die. The traditional hot extrusion die is not equipped with any structure to protect the cantilever of the lower die because of the central split hole, so that the material flow directly impacts the cantilever of the lower die. This will not only easily cause premature damage to the die or Scrap, and it will also cause the quality of aluminum profiles to fail to meet the requirements

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