Extrusion moulding combined mould of large long-cone horn cylinder member

Abstract

The invention discloses an extrusion moulding combined mould of a large long-cone horn cylinder member. The extrusion moulding combined mould comprises an upper general mould plate, a lower general mould plate, a male mould, a female mould and a discharging mechanism, wherein the male mould is detachably fixed on the upper mould plate and comprises an upsetting male mould punch, a pre-forming male mould punch and a final-forming male mould punch; the female mould carries out transverse splitting and comprises a first section of female mould and a second section of female mould, the first section of female mould forms a general female mould, and is movably fixed on the lower mould plate, and the second section of female mould is detachably fixed between the first section of female mould and the lower mould plate; the upper mould plate is fixed with the upsetting male mould punch, the first section of female mould and the lower mould plate are fixedly combined to form an upsetting mould, the pre-forming male mould punch is used for replacing the upsetting male mould punch to be fixed on the upper mould plate, a discharging plate is fixed above the first section of female mould to form a pre-forming mould, the final-forming male mould punch is used for replacing the pre-forming male mould punch to be fixed on the upper mould plate, and the second section of female mould is cushioned between the first section of female mould and the lower mould plate to form a final-forming mould.

Description

technical field [0001] The invention belongs to metal extrusion forming technology, in particular to an extrusion forming combination die of a large long tapered horn tube part. Background technique [0002] Such as figure 1 The large long tapered horn tube part 90 shown has a size of φ600*1400mm, which belongs to a large part. In addition to the external tapered shape, its inner cavity is also double tapered. Such as Figure 2 to Figure 5 As shown, in the traditional extrusion method, the blank piece 991 is upset to form the upset piece 992, and then the punch 30 is used to extrude along the wall of the upset piece 992, and the material will flow in the opposite direction of the movement of the punch 30, and the punch The deeper the 30 is squeezed downward, the larger the area of ​​the cylinder wall is, and the friction force along the direction of the cylinder wall increases, and as the area of ​​the cylinder wall grows, there is no lubricant between these newly formed a...

AI Technical Summary

Problems solved by technology

like Figure 2 to Figure 5 As shown, in the traditional extrusion method, the blank piece 991 is upset to form the upset piece 992, and then the punch 30 is used to extrude along the wall of the upset piece 992, and the material will flow in the opposite direction of the movement of the punch 30, and the punch The deeper the 30 is squeezed downward, the larger the area of ​​the cylinder wall is, and the friction force along the direction of the cylinder wall increases, and as the area of ​​the cylinder wall grows, there is no lubricant between these newly formed areas and the surfaces of the male die 30 and the concave die 40 , the friction coefficient increases, about 0.5-1, which is also a factor of friction increase; in addition, as the area grows, the punch 30 is subjected to material deformation resistance in the vertical upward direction component force increases, the result is easy to bring The reason is that the strength of the punch is not enough and the phenomenon of breaking occurs. Secondly, for the cone cylinder of φ600*1400, the direct extrusion pressure reaches 6000 tons, so it is necessary to adopt a new special mold structure and a new special method to solve the problem of the cone cylinder of Extruded on a 1000-ton extrusion machine

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