4 results about "Hot runner" patented technology

The invention discloses an injection moulding process of polyethylene (PE) material pieces for an infusion apparatus. The injection process comprises the following steps of: S1, melting, S2, clamping a mould, S3, injecting, S4, pressure-maintaining, S5, cooling, S6, opening the mould, and S7, demoulding. The beneficial effects of the invention are as follows: as a hot runner injection moulding process is applied, and a heating device for heating a runner is contained in the hot runner mould, so that the runner is a molten state during the entire injection moulding period, further, the raw materials are saved, and the cost is reduced; the process provided by the invention is simple in process procedures, easy to achieve and short in the cycle time; and the product has better quality and the degree of automation is increased.

The invention discloses a hot runner mold with a multipoint hot gate, comprising an upper mold plate, heat barriers and an overload protector. The bottom end of the upper mold plate is provided with abottom mold plate that is releasably connected with the upper mold plate; the end of the upper mold plate far away from the bottom mold plate is provided with an insulation plate; the insulation plate is fixedly connected with the upper mold plate; the heat barriers are distinguished via connectors and are mounted in separate zones; a hot divider plate can be opened through a mounting cover, so that the heat barriers are convenient to mount, maintain and replace, maintenance speed for the damaged heat barriers is increased, and time and manpower are saved, with working efficiency of the hot runner mold ensured; a filter mesh plate can filter off metal particles in melt so that the metal particles are avoided blocking an injection nozzle or causing damage to the injection nozzle; the overload protector can protect the safety of the heat barriers in other zones when the heat barriers mounted the separate zones fail, so that maintenance cost is lowered, and normal running of the hot runner mold is ensured.