Injection mold machine works in place, the output signal to trigger the anti-mold mold protection crush protection, the latter taking the mold cavity in a row like, whether monitoring thimble shaped workpieces will top out and whereabouts. When the workpiece is completely monitored whereabouts, mold protection a confirmation signal back to the injection molding machine to begin the next cycle. If a piece does not fall within the set time or debris between the mold, mold protection abnormal signal is issued, and the police action to stop the injection molding machine. Extrusion molding in a viscous flow state is to make the plastic mold protection monitor, protector at a high temperature and a certain pressure, through a die having a specific cross-sectional shape, and then at a lower temperature, shaping into a desired cross-sectional shape a method of forming a continuous profile. Extrusion molding production process, is ready to molding material, extrusion molding, cooling setting, pulling and cutting, post-extrusion Ordnance Disposal (quenched and tempered or heat). In the extrusion molding process Guangdong mold protection, pay attention to adjust the heating section of the extruder barrel and head of the die temperature, screw rotation, pulling speed and other parameters in order to get qualified extruded profiles. Pay particular attention to adjusting the polymer melt extruded from the die head rate. Because when the lower melt extrusion rate, extrudate having a smooth surface, uniform cross-sectional shape; however, when the molten material reaches a certain limit the rate of extrusion, the extrudate surface becomes rough and dull appeared shark skin, orange peel, shape distortion and so on. When the extrusion rate is further increased, the surface of the extrudate distortion, even fragmented and broken into pieces or cylindrical melt. Therefore critical extrusion rate of the control. Mold protection _ ShengDing (certified) _ protection provided by the Dongguan Sheng Ding Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) is Dongguan, Guangdong, dedicated instrumentation leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Sheng Ding instrument in leadership with the staff warmly welcome all inquiries negotiations to create ShengDing instrument a better future.