Inverted extrusion dies for processing cups

Abstract

The invention discloses a backward extrusion die for processing a cup-shaped element. The backward extrusion die comprises an upper convex die, a lower convex die, a concave die, a cushion plate, ejection rods and a base, wherein the upper part of the cushion plate is provided with an annular through hole and an upper round through hole; the lower part of the cushion plate is provided with a lower round through hole; the ejection rods are fixedly arranged on the base and pass through the lower round through hole and the annular through hole; the upper part of the lower convex die passes through the upper round through hole, and the bottom end of the lower part of the lower convex mold is provided with a support column; sleeves are arranged outside the lower convex die in a sleeving mode; the concave die is internally provided with a molding cavity; the upper part of the lower convex die is positioned at the center of the lower part of the molding cavity; the upper parts of the sleeves are positioned in the molding cavity and the outer walls of the sleeves butt against the inner walls at the lower part of the molding cavity; the center of the upper convex die is provided with an injection molding hole which is internally provided with a push rod which butts against the inner wall of the injection molding hole. According to the invention, the defects that when a cup-shaped element is processed in the prior art, injection molding and stamping are individual processing modes, the application range is narrow, and the cost is high are overcome; the backward extrusion die for processing the cup-shaped element, which is wide in application range and is low in cost, is provided.

Description

technical field [0001] The invention belongs to the field of extrusion devices, in particular to a reverse extrusion die for processing cup-shaped parts. Background technique [0002] Mold, various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. In short, a mold is a tool used to shape an object. This tool is composed of various parts, and different molds are composed of different parts. [0003] Cup-shaped parts are commonly used devices in machinery. For processing cup-shaped parts, the commonly used processing methods include injection molding and stamping. Stamping usually involves softening a plate at high temperature, and then stamping it with a stamping die. Extrusion forms cup-shaped parts, while injection molding is to add raw materials to form cup-shaped parts in the model to shape them to form cup-shaped parts. Howeve...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for processing cup-shaped parts with a wide range of application and low cost, aiming at the shortcomings of the existing processing methods of cup-shaped parts, such as injection molding and stamping, which are independent processing methods, narrow application range and high cost. inverted extrusion die

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