Molding process of thick-wall highlight transparent injection molding part

Abstract

The invention discloses a thick-wall highlight transparent injection molding part forming process, and relates to the technical field of injection molding processes, and the thick-wall highlight transparent injection molding part forming process comprises the following steps: step 1, preparing a mold, an injection molding machine and a mold temperature controller for later use; 2, starting an injection molding machine, a mold and a mold temperature controller, and setting the temperature of the mold temperature controller: controlling the mold temperature range of a fixed mold to be 120-122 DEG C, and controlling the mold temperature range of a movable mold to be 125-128 DEG C; 3, filling, wherein the preheated mold is filled with raw materials through injection by an injection molding machine; and 4, pressure maintaining is conducted, specifically, after injection is finished, the state is switched to the pressure maintaining state, four-section pressure maintaining is adopted, the pressure maintaining effects of all sections are different, and shrinkage of the injection molded part is reduced. 5, cooling is conducted, specifically, after pressure maintaining is finished, a cooling stage is conducted, and the cooling time is 80-85 s; step 6, demolding: opening the mold, taking out an injection molding part product, and completing injection molding; the injection mold has the advantages of improving the injection molding productivity, improving the product quality and reducing the cost.

Description

technical field [0001] The invention relates to the technical field of injection molding technology, and more particularly to the technical field of molding technology of thick-walled, high-gloss transparent injection molding parts. Background technique [0002] Injection parts refer to various injection products produced by injection molding machines collectively referred to as injection parts, including various packaging, parts, etc. It is mainly made of polyethylene or polypropylene and other materials with the addition of various organic solvents. The choice of plastic parts is mainly determined by the type of plastic (thermoplastic or thermoset), the starting form, and the shape and size of the product. The production of injection molded parts generally adopts molding, transfer molding, and injection molding. [0003] The injection molding process refers to the process of making semi-finished parts of a certain shape from molten raw materials. The injection molding p...

AI Technical Summary

Problems solved by technology

[0004] There is currently no standard process flow for the molding of thick-walled high-gloss transparent injection molded parts, and a targeted process flow is designed; firstly, in the filling process, the shorter the filling time, the higher the molding efficiency, but in practice, the molding time and injection speed need to be Restricted by many conditions; secondly, the mold temperature controller is needed in the filling process, and the temperature control system of the mold temperature controller is also the most important part. The temperature of the mold temperature controller, a very important parameter, must be accurately controlled within the specified range. It cannot meet the stability of product quality and productivity and increases the cost; moreover, in the current molding process, the control standards for pressure holding time and pressure holding times are not uniform, which may easily cause shrinkage of injection molded parts and affect product quality