Cell phone rear cover blank material forming die with hydraulic device and comprising middle frame

Abstract

The invention provides a cell phone rear cover blank material forming die with a hydraulic device and comprising a middle frame. The forming die comprises a movable die and a fixed die, and a die coreof the movable die is provided with five forming faces; an included angle between the four peripheral forming faces and the middle forming face is larger than or equal to 90 DEG; and a die core of the fixed die is provided with five forming faces; an included angle between the four peripheral forming faces and the middle forming face is larger than or equal to 90 DEG. According to since the cellphone rear cover blank material forming die with the hydraulic device and comprising the middle frame, since the hydraulic device is arranged, the production performance of an injection molding machine is improved; a cell phone rear cover and the cell phone middle frame are integrated, and the cost is reduced; since a cold material chamber is arranged, the quality of a formed product is preventedfrom being affected by cold materials; since a movable cavity is arranged, the volume of the movable cavity before compression stopping is larger than the volume of the product, and liquid raw materials in the movable cavity flow uniformly, and are easy to form; the internal stress of the product is high, and the appearance is beautiful; and the thickness is uniform, and the composite materials are not easily separated from each other.

Description

technical field [0001] The invention relates to a blank forming die, in particular to a mobile phone back cover blank forming die with a hydraulic device and a middle frame. Background technique [0002] Injection mold is a tool for producing plastic products, and it is also a tool for giving plastic products complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain complex-shaped parts. Specifically, it refers to injecting the heated and melted plastic into the mold cavity under high pressure from the injection molding machine, and after cooling and solidifying, a molded product is obtained. [0003] The injection mold consists of two parts, the movable mold and the fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. Both the movable mold and the fixed mold form a fixed cavit...

AI Technical Summary

Problems solved by technology

[0004] At present, the molds for product molding in the mold industry all use glue injection into the fixed cavity. The volume of the fixed cavity is the same as the volume of the product. During the molding process, the fixed cavity is too small to cause the flow of raw materials. The resistance is large, and it is not easy to form. In order to achieve product forming, the injection pressure and injection speed must be increased, which leads to large internal stress of the formed product, poor appearance, uneven thickness, and easy separation of composite materials, resulting in poor product quality. , low yield

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