Extrusion device for shortening blank friction flow path

Abstract

The invention relates to an extrusion device for shortening a blank friction flow path, which is suitable for continuous extrusion equipment. The extrusion device is characterized in that a blank friction flow path shortening device constituted by a wrap angle adjusting mechanism and an auxiliary blank gripping mechanism is arranged on a frame, and the wrap angle adjusting mechanism comprises a gripping wheel position adjusting component and an extrusion cavity position adjusting component; and the auxiliary blank gripping mechanism comprises a bending guide roller I, a bending guide roller oil cylinder I, a bending guide roller II and a bending guide roller oil cylinder II, so that the blank friction flow path can be shortened and the rotational angle of a blank can be reduced. According to the extrusion device disclosed by the invention, by adjusting the positions of a gripping wheel and an extrusion cavity, the blank flow path can be shortened, and the rotational angle of the blank can be reduced, so that the extrusion device can further reduce the extrusion load and deformation temperature of metal, not only save energy, but also prolong the service life of a tool and a mold; and particularly, the control of the deformation temperature can be realized by adjusting the blank flow path, which is very beneficial to preparation of high-performance nonferrous metal extruded products with fine-grained structures.

Description

technical field [0001] The invention belongs to extrusion equipment for metal plastic forming, in particular to an extrusion device for shortening the frictional flow path of blanks suitable for continuous extrusion equipment. Background technique [0002] As we all know, extrusion is a major pressure processing method widely used in the production of non-ferrous metal tubes, rods, profiles, and wires. Extrusion is a plastic processing method that uses external force to force metal to flow out of the die. From the driving mode of external force, there are two types of extrusion. One is to force the billet in the extrusion cylinder to flow out of the die opening by applying pressure to the billet in the extrusion cylinder to form a product. This extrusion method has a wide range of applications, is almost not limited by product specifications, has a single metal flow path, and is easy to control the degree of deformation and deformation temperature. But the disadvantage is ...

AI Technical Summary

Problems solved by technology

But the disadvantage is that there is friction between the billet and the wall of the extrusion cylinder that hinders the flow of metal, resulting in energy loss; the other is called continuous extrusion method, which uses the friction generated between the rotating extrusion wheel and the billet as the driving force Force, to achieve the extrusion of the material

In this way, for large-size billets, the increase in deformation power caused by such a large-angle repeated bending is significant, which further increases the load on the extrusion equipment and deteriorates the service conditions of the die

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