保温杯盖热流道塑料模具设计  

Design of plastic mould for hot runner of insulated cup cover

作　　者：张玉军 ZHANG Yu-jun(Taizhou Technician College,Taizhou 318000,Zhejiang,China)

机构地区：[1]台州技师学院,台州浙江318000

出　　处：《模具技术》2024年第3期24-29,共6页Die and Mould Technology

摘　　要：对保温杯盖的结构进行了分析,并根据产品的结构设计两板模结构,采用热流道浇注系统。针对产品上的外螺纹,采用Half滑块成型。为了提高生产效率,采用一模八腔。为了防止产品出现注塑不饱满的现象,在定模镶件内部再设置小镶件。为了防止产品产生缩水,设计了一套冷却效果良好的冷却系统:在动模型芯的内部设置两头螺纹的螺杆;在定模内、外镶件上沿外圆柱面各设置了一道环状冷却水路;在滑块上设置随形直通式水路。为了使排气系统避开定模小镶件外圆柱面上的冷却水路,在小镶件内部开设排气孔,通过排气孔将型腔中的空气排出。根据产品结构与模具结构,采用推件板将产品顶出。为了不影响外螺纹滑块的结构,将推件板设置在动模镶件表面的方框内,并利用动模型芯作为导向机构,可防止推件板在运动过程中出现卡死的现象。The structure of the lid is analyzed,and the two-plate mold structure is designed according to the structure of the product,and the hot runner pouring system is adopted.For the external thread on the product,the Half slider is used to form.In order to improve production efficiency,a mold with eight cavities is used.In order to prevent the product from being not full in injection molding,a small insert is arranged inside the fixed mold insert.In order to prevent the shrinkage of the product,a cooling system with good cooling effect is designed:a screw with two threads is arranged inside the moving model core;A circular cooling water channel is arranged along the outer cylinder surface in the fixed die and on the outer insert;A straight through waterway is provided on the slider.In order to make the exhaust system avoid the cooling water channel on the outer cylinder of the fixed die small insert,an exhaust hole is set up inside the small insert and the air in the mold cavity is discharged through the exhaust hole.According to the structure of the product and the mold structure,the product is pushed out by the pushing plate.In order not to affect the structure of the external thread slider,the pusher plate is set in the box on the surface of the moving die insert,and the moving model core is used as the guiding mechanism to prevent the phenomenon of sticking during the movement of the pusher plate.

关 键 词：保温杯盖 外螺纹 热流道 顶出机构 冷却系统 

分 类 号：TQ76[化学工程]