空调横导风条注塑模具设计

Design of Injection Mold for Transverse Air Guide Strip of Air Conditioner

针对结构复杂的空调横导风条的成型工艺特点,确定了注塑模具的整体设计方案,材料选用丙烯腈-丁二烯-苯乙烯塑料(ABS)。采用UG软件对产品进行建模,设计分型面在塑件的最大轮廓处,并设计了模架的浇注系统、顶出机构、整体嵌入式型腔和型芯、抽芯机构、冷却系统等机构。塑件结构复杂,为薄壁长条形,两端和中间有肋板,并附有圆孔和卡扣,两侧圆柱卡扣采用斜导柱抽芯机构成型,侧壁圆孔采用斜顶抽芯机构成型,并计算了抽芯距离及抽拔力。模具选用1模2腔侧浇口的型腔布局形式,通过分析,确定了浇口位置,浇口形式为潜水进胶,确保外观面无浇口痕迹。设置了23根推杆和拉料杆、4斜顶杆,每个塑件采用8推杆和2斜顶杆顶出,实现了浇注凝料的自动脱模。实践证明,模具结构布局合理,运行安全可靠,成型质量稳定。

According to the molding process characteristics of air conditioning transverse air guide strip with complex structure,the overall design scheme of injection mold was determined.Acrylonitrile butadiene styrene plastic(ABS)was selected as the material.UG software was used to model the product,and the parting surface was designed at the maximum outline of the plastic parts.The gating system,ejection mechanism,integral embedded cavity and core,core pulling mechanism,cooling system and other mechanisms were designed.The structure of plastic parts is complex,thin-walled strip,with ribs at both ends and in the middle,and with a round hole and buckle.The cylindrical buckles on both sides were formed by oblique guide column core-pulling mechanism,and the round hole on the side wall was formed by oblique top core-pulling mechanism,and the core-pulling distance and pulling force were calculated.The mold adopted the cavity layout form of 1 mold and 2 cavity side gate.Through analysis,the position of the gate was determined,and the gate form was diving glue.23 push rod and pull rod,4 oblique jacking rod were set up,each plastic parts using 8 push rod and 2 oblique jacking rod to achieve the automatic demoulding of pouring aggregate.Practice has proved that the mold structure layout is reasonable,the operation is safe and reliable,and the molding quality is stable.