Design of injection mold for intake pipe bracket

Intake pipe bracket is an important accessory in a car engine. Product is shown in Figure 1. Maximum external dimension of product is 270.00 mm * 242.50 mm * 118.00 mm, average thickness of plastic part is 2.65 mm, material of plastic part is PP-T40, shrinkage rate is 1.010, and weight of plastic part is 408.10 grams. Technical requirements for plastic parts are that there shall be no defects such as peaks, underfilling, flow lines, pores, warpage deformation, silver lines, cold materials, and spray lines.

Precision injection molding process and mold design of diverter

Flow divider is a structural part on car controller, which is used to divide flow of liquid. Nowadays, a large number of plastic parts are used in auto parts, which can achieve effects of light weight, low cost, high precision, etc., and properties of plastics bring richer functions to automobiles. It can be said that it is a breakthrough in automobile manufacturing industry. Nowadays, most of plastic machinery parts and components used are injection molding. Structure of modern plastic products is becoming more and more complex, wall thickness of plastic parts is becoming thinner, appearance and precision requirements are getting higher and higher, people's requirements for quality of plastic parts are becoming more and more stringent, technical requirements for injection molding are also getting higher and higher; injection molding industry has entered era of precision injection molding. Precision injection molding means that appearance accuracy of plastic products should meet strict dimensional tolerances, form and position tolerances, surface roughness. Due to high design accuracy of plastic parts, special engineering plastics are used for processing. Conventional injection molding cannot be used for plastic parts, but precision injection molding technology must be used. In order to ensure performance, quality and reliability of these precision plastic parts, stability of long-term use, plastic products with high quality, meeting design requirements of plastic parts must be injection molded. Plastic materials, injection molding equipment, mold design, injection molding process and on-site management must be improved .