Gradient mould-release method and device for wimble tail bulb mould core

Abstract

The invention discloses a gradient demouding method and a gradient demouding device for a conical-tail spherical-head mould core. The gradient demouding method comprises the following steps: a mould provided with the spherical-head mould core is adopted for processing a component with thin-wall, convex and spherical structure characteristics; under the condition of demouding of the component and the die, the component undergoes demouding for two stages; in the first stage, the component is separated from a concave mould of the mould together with the spherical-head mould core; and in the second stage, the component is separated from the spherical-head mould core of the mould, and the tail of the spherical-head mould core is set to take the shape of a conical surface, so that the demoudingacting force which is acted on the spherical-head mould core is all acted on the conical surface by means of compressive stress when the component is separated from the spherical-head mould core. Thegradient demouding device not only has the advantages of simple and reasonable structure and long service life but also has the advantages of high precision and good quality of the processed component.

Description

technical field [0001] The invention relates to a gradient demoulding method and device for processing a cone-tailed ball-head mold core with a thin-wall concave spherical structure characteristic part, and belongs to the technical field of precision cold extrusion forming molds. Background technique [0002] At present, in the precision cold extrusion forming dies used to process parts with thin-walled concave spherical structural features, the molds of male die, concave die and ball core are generally used for processing. After the parts are extruded, they are demoulded. Generally, the ball head core is separated from the part and the part is separated from the die at the same time. Since the ball head core is separated from the part, the part is also under the pressure of the die, so the distance between the ball head core and the part The friction force is very large, and the structure of the existing ball core is unreasonable. The force on the ball core during demouldin...

AI Technical Summary

Problems solved by technology

[0002] At present, in the precision cold extrusion forming molds used to process parts with thin-walled concave spherical structural features, the molds of male mold, concave mold and ball core are generally used for processing. After the parts are extruded, they are demoulded. Generally, the ball head core is separated from the part and the part is separated from the die at the same time. Since the ball head core is separated from the part, the part is also under the pressure of the die, so the distance between the ball head core and the part The frictional force is very large, and the structure of the existing ball core is unreasonable, and the force on the ball core during demoulding is all tensile force, so the existing demoulding method is not only easy to cause the ball The fracture or damage of the head mold core, and it is easy to affect the processing quality of the parts

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