A plastic mold design knowledge based on dimensional accuracy associated with design size is correct. Specifically plastic products throughout the product to be outside and functionality to determine its quality and specific dimensions which are based on: the appearance of a higher quality requirements, dimensional accuracy requires a lower plastic products. Such as toys; functional plastic plastic mold structure, the size of demanding; exterior dimensions are very strict and plastic products. Such as cameras, stripping slope not reasonable. Drafts of stripping and directly related to the quality of plastic products, which is related to the injection process, whether injected smoothly: stripping slope enough; gradient want and plastic molding or parting parting surface adaptation; whether it will affect the accuracy of the appearance and wall thickness; and whether it will affect the strength of certain parts of plastic products. Select the location of the gate should follow the following principles: ① gate location should be chosen in parting, to the processing and use to clean mold gate; ② gate locations in various parts of the distance from the cavity should be consistent ③ When the gate location should ensure that the plastic flows into the cavity of the cavity in the spacious, thick-walled parts, in order to smoothly flow into the plastic;; and a process for the shortest ④ gate location should be set up in the thickest section of plastic parts; ⑤ avoid plastic shed when straight cavity wall cavity, core or insert precision plastic mold, the plastic can flow into the cavity of each part as soon as possible, and to avoid deformation of the core or insert; ⑥ try to avoid products produced fusion plastic injection mold marks, weld lines or make it produce products unimportant parts; ⑦ gate location and plastic inflow direction, should make the plastic flow into the cavity at the time, can be evenly flow into the cavity along a direction parallel to, and there are conducive to the type of exhaust gas in the chamber; ⑧ gate should be set on the products most likely to clear the site, as far as possible without affecting the appearance of the product. Plastic mold structure, Foshan, plastic molds, molds Ltd. Shun King by Liaobu Shun King mold. Liaobu Shun King Mold Ltd. (www.shunjingmuju.com/) strong, credible, in Dongguan, Guangdong mold equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shun King dies and you hand into the brilliant, for a better future!