Method and device for making mobile phone card tray through MIM technology

Abstract

The invention discloses a method and a device for making a mobile phone card tray through a MIM technology. According to the method for making the mobile phone card tray through the MIM technology, when MIM feeding materials are injected into a mould by using an injecting machine, an injection machine barrel is divided into at least four areas, and the temperature is controlled respectively for each area; a first area is the part of a nozzle at the forefront end of a material pipe of the injection machine barrel and a barrel flange, the temperature of the first area is controlled, so that the feeding materials in the first area are in a viscous flow state; a second area is the part where the front end of the of the material pipe of the injection machine barrel is close to the barrel flange, the temperature of the second area is controlled, so that the feeding materials in the second area are in a glassy state; a third area is the middle part of the material pipe of the injection machine barrel, the temperature of the third area is controlled, so that the feeding materials in the third area are in a high elastic state; and a fourth area is the rear end part of the material pipe of the injection machine barrel, the temperature of the fourth area is controlled, so that the feeding materials in the fourth area are in the high elastic state. The method for making the mobile phone card tray through the MIM technology can significantly improve the product yield and reduce production cost and production efficiency.

Description

technical field [0001] The invention relates to a method for manufacturing a mobile phone card holder by a MIM (metal powder injection molding) process. Background technique [0002] With the continuous advancement of social science and technology and the vigorous development of global industrialization, powder metallurgy industry has developed rapidly due to its many advantages, and its technology has been widely used in military, transportation, machinery, electronics, aerospace, aviation and other fields. [0003] The mobile phone card tray made by MIM technology is one of the main products of the entire MIM industry, with a high market share and a large shipment volume. Since the mobile phone card tray is a high-precision component used in IT consumer electronics products, the requirements for appearance and size are relatively high. High, because the MIM feed is made of a variety of polymer materials mixed with metal powder, the traditional plastic injection molding pro...

AI Technical Summary

Problems solved by technology

[0005] The traditional method only uses a fixed set of parameters to control the injection of the injection machine, without referring to the volume of the product flow channel and the cavity to set the injection parameters, which will easily cause uneven pressure in the internal cavity of the product and affect the consistency of the density of different parts of the product

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