Patent ID: 9586356
Date: 2017-03-07
CPC Classifications: B29B,B29C

Claim:
1. A device for dynamic extrusion molding of plastic articles having variable micro-channel, comprising: a single-screw extruder, flanges ( 7 ), a winding device ( 8 ), a dynamic extrusion die ( 9 ), a valve ( 10 ), a pressure regulator ( 11 ), a fluid source ( 12 ), a water sink ( 13 ), a pulley ( 14 ), a tractor ( 17 ), a data acquisition and control system; wherein the single-screw extruder comprises: a hopper ( 2 ), a motor ( 3 ), a screw ( 4 ), a barrel ( 5 ), a band heater ( 6 ) and a heating controller ( 44 ); a rotation shaft of the motor ( 3 ) is connected to the screw ( 4 ) within the barrel ( 5 ) by a coupler, the exterior of the barrel ( 5 ) except for the front and end faces is covered with three sections of the band heater ( 6 ), all of which are connected to the heating controller ( 44 ), and the barrel ( 5 ) is connected to the dynamic extrusion die ( 9 ) by the flanges ( 7 ), a filter is provided between the flanges 7 ; the exterior of the dynamic extrusion die ( 9 ) except for the front and end faces is covered with a heating coil ( 43 ), and the fluid source ( 12 ), the pressure regulator ( 11 ), the valve ( 10 ) and the dynamic extrusion die ( 9 ) are connected to each other in sequence by pipes, the water sink ( 13 ) is disposed below the dynamic extrusion die ( 9 ), the pulley ( 14 ) is fixed in the water sink ( 13 ), and the tractor ( 17 ) and the winding device ( 8 ) are disposed in sequence behind the water sink ( 13 ); and the dynamic extrusion die ( 9 ) comprises a die body ( 30 ), a head die ( 27 ) that locates at an outlet of the die body ( 30 ), a syringe core ( 37 ) and a linear voice coil motor ( 38 ) that can drive the syringe core ( 37 ) to vibrate along an extrusion direction, the syringe core ( 37 ) comprises a syringe body ( 33 ) and a syringe needle ( 24 ), with one end of the syringe body ( 33 ) being connected to the linear voice coil motor ( 38 ), where a distance y between an outer end face of the syringe needle ( 24 ) and an outer end face of the head die ( 27 ) varies in patterns of controlled harmonic vibration and the micro-channel has a cross-sectional dimension of micron-scale or nano-scale.