扫地机器人尘盒盖注塑模具设计

Design of injection mold for dust box cover of sweeping robot

分析了某扫地机器人尘盒盖注塑模具的设计过程,针对该产品的特性和注塑模具的特点,选择使用丙烯腈-丁二烯-苯乙烯共聚物(ABS)抗静电剂作为产品的材料。为了满足扫地机器人尘盒盖的外观要求、结构要求和产能要求,模具采用一模两穴布局,采用单嘴模热流道转冷流道的浇注系统,采用侧浇口进料形式,提高了产品成型良率及外观质量。模具设计了前模斜顶抽芯机构,创新设计了滑块二次抽芯机构同时脱2个方向的倒扣,采用后模斜顶内缩抽芯机构结合普通滑块抽芯机构来完成脱模,解决了产品不同方向上的孔位倒扣的脱模问题及产品环形深筋位的粘模力问题。经过实际生产验证,该模具的各个结构设计合理,产品成型稳定,满足生产要求。

This paper analyzed the design process of an injection mold for the dust box cover of a sweeping robot in terms of the characteristics of the product and injection mold using antistatic acrylonitrile butadiene styrene copolymer(ABS)as a raw material. To meet the requirements of appearance,structure,and production capacity for the dust box cover of the sweeping robot,the mold was designed by adopting the layout of the first mock examination and two holes. The pouring system of converting the hot runner to the cold runner of the single nozzle mold and the side gate feeding form were also employed for the mold. This improved the molding yield and appearance quality of the product. This mold was designed with an inclined top core pulling mechanism of the front mold and a secondary core pulling mechanism of the slider to take off the reverses in two directions simultaneously. An inclined top core pulling mechanism of the rear mold combined with the ordinary slider core pulling mechanism was also adopted to complete the demolding,solving the demolding problem of the hole position reverses in different directions of the product and the sticking force problem of the ring deep rib position of the product. Through the actual production verification,the structural design of the mold was reasonable,and the product molding was stable,which met the requirement of production.