Forming mold for mobile phone rear cover blank with middle frame capable of adjusting movable mold cavities through springs

Abstract

The invention provides a forming mold for a mobile phone rear cover blank with a middle frame capable of adjusting movable mold cavities through springs. The forming mold is characterized in that a movable mold core is provided with five forming surfaces, the included angle between each of the surrounding four forming surfaces and the middle forming surface is larger than or equal to 90 degrees, afixed mold core is provided with five forming surfaces, and the included angle between each of the four surrounding forming surfaces and the middle forming surface is larger than or equal to 90 degrees. According to the forming mold for the mobile phone rear cover blank with the middle frame capable of adjusting the movable mold cavities through the springs, due to the fact that the movable cavities are formed, the size of the movable cavities can be adjusted according to the requirements of products, so that the volume of the movable cavities before compression is stopped is larger than thevolume of the products, the raw materials are easy to flow in the larger movable mold cavities, the products are easy to form, in addition, the internal stress of the products is good, the appearanceis attractive, the thickness is uniform, and a composite material is not easy to separate from each other; and due to the fact that a mobile phone rear cover and the mobile phone middle frame are integrated and are natural in transition, the production processes are reduced, and the cost is lowered.

Description

technical field [0001] The invention relates to a blank forming mold, in particular to a mobile phone back cover blank forming mold including a middle frame which regulates a movable cavity through a spring. 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...

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. Large resistance, not easy to form, in order to achieve product forming, the injection pressure and injection speed must be increased, which will lead to large internal stress of the formed product, poor appearance, uneven thickness, easy separation of composite materials, resulting in poor product quality , low yield

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