Die casting mold system
May 15, 2021
The pouring system refers to the part of the flow path before the plastic enters the cavity from the nozzle, including the main channel, the cold material hole, the split channel and the gate.
The gating system, also known as the runner system, is a set of feed channels that direct the plastic melt from the injector nozzle to the cavity, typically consisting of a main flow path, a split runner, a gate, and a cold feed pocket. It is directly related to the molding quality and production efficiency of plastic products.
Mainstream road
It is a passage in the mold that connects the nozzle of the injection molding machine to the runner or cavity. The top of the main flow path is concave to engage the nozzle. The inlet diameter of the main flow channel should be slightly larger than the nozzle diameter (0.8 mm) to avoid flashing and prevent the interception of the two due to inaccurate connection. The diameter of the inlet depends on the size of the product, generally 4-8mm. The diameter of the main flow path should be enlarged inward by an angle of 3° to 5° in order to demold the flow path.
Cold pocket
It is a cavity at the end of the main flow path to capture the cold material generated between the two injections at the end of the nozzle to prevent clogging of the runner or gate. If the cold material is mixed into the cavity, internal stress is easily generated in the manufactured product. The cold pocket has a diameter of about 8-10 mm and a depth of 6 mm. In order to facilitate demolding, the bottom is often carried by the stripper. The top of the demolding rod should be designed to be a zigzag hook or a depression groove so that the main channel can be smoothly pulled out during demolding.
Shenzhen Manners Technology Co.,Ltd is the supplier of some of the world’s famous international companies like Blum Novotest, Komet, Geneva Lab, BTL, etc... We specialize in telescoping parts, needle manufacturing, multi-axis CNC machining, Die casting mold, plastic injection mold, stamping mold, Swiss-type turning, laser cut tubing, tube processing, laser welding and automated assemblies for the medical, endoscopic, arthroscopic, orthopedic, firearms, defense, automotive, and specialty industrial markets.
Please contact us if you need: zhang@sz-manners.com.
