What is an Integral Needle Valve for hot runner system? What are its performance characteristics?
Publish Time: 2024-11-19
A Hot Runner System Integral Needle Valve refers to a needle valve structure in which the hot runner system and the mold are integrated. This structure makes the hot runner system more compact, efficient, and can better control the flow of plastic.A Hot Runner System Integral Needle Valve is mainly composed of a feed port, a feed channel, a diverter, a hot runner, a needle valve, and a discharge port. These components work together to ensure that the plastic can flow smoothly and accurately into the mold cavity during the injection molding process.During the injection molding process, plastic enters the hot runner system through the feed port and is then distributed to each hot runner through the diverter. When the plastic flows to the needle valve, the needle valve opens or closes according to the control signal of the injection molding machine to control the flow of the plastic. When the needle valve is open, the plastic flows into the mold cavity; when the needle valve is closed, the plastic is prevented from continuing to flow.The performance characteristics of the Hot Runner System Integral Needle Valve are mainly reflected in the following aspects:1. High-precision processing and excellent performanceHigh processing accuracy: The integrated needle valve adopts advanced manufacturing technology and materials to ensure high-precision processing, so that the hot runner system can achieve higher mold processing accuracy during the injection molding process, thereby meeting the production requirements of high-quality injection molded parts.Low energy consumption: The integrated needle valve hot runner system usually uses an independent electric heater for heating, and does not require additional host heating, thereby reducing energy consumption and saving production costs.2. High reliability and stabilitySimple structure: The structure of the integrated needle valve is relatively simple, which reduces the failure points and maintenance difficulty, and improves the stability and reliability of the system.Long service life: Due to its simple structure and high-quality materials, the integrated needle valve can work stably for a long time in a high-temperature and high-pressure injection molding environment, extending its service life.3. Flexible control and optimization of injection molding processControllable gate opening time: The integrated needle valve can accurately control the gate opening time to ensure smooth cavity filling and balanced melt flow, thereby eliminating weld marks and improving the quality of injection molded parts.Optimize the injection molding cycle: The integrated needle valve can more effectively control the pressure holding and molding cycles and improve production efficiency. For example, using a larger diameter gate can speed up the cavity filling speed, reduce injection pressure, reduce product deformation, and thus shorten the molding cycle of the part.4. Improved product qualityNo residual gate marks: The integrated needle valve hot runner system can ensure that no gate marks are left on the injection molded parts, and the gate marks are smooth, which is suitable for injection molded parts with high surface quality requirements.Reduce product internal stress: By accurately controlling the melt injection sequence, the direct intersection of the melt flow front can be effectively avoided, thereby reducing the internal residual internal stress of the product and improving the stability and strength of the product.5. Other advantagesPrevent material back suction and wire drawing: During the injection molding process, the integrated needle valve can effectively prevent the back suction of materials from the mold cavity and the occurrence of wire drawing (wire drawing), improving the neatness and beauty of the product.Strong adaptability: The integrated needle valve hot runner system is suitable for a variety of injection molding materials and injection molding processes, and can meet the production requirements of different injection molding parts.Hot Runner System Integral Needle Valve has multiple performance characteristics such as high-precision processing, high reliability, flexible control and optimization of injection molding process, improved product quality and strong adaptability. It is an indispensable component in the injection molding industry.
