Design of plastic mould for hot runner of insulated cup cover
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.
thermal cup lidexternal threadhot runnerejector mechanismcooling system
国家科技期刊平台
NSTL
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