Sprue stick
1. Features of defect of injection molding.
The injection port is affected by the injection orifice.
2. Possible causes of problems.
(1). The injector sleeve and the nozzle are not correct.
(2). The plastic overfill in the opening sleeve.
(3). The nozzle temperature is too low.
(4). The plastic is not completely solidified in the injection port, especially the large diameter injection port.
(5) the garden arc surface of the injector sleeve is mismatched with the curved surface of the nozzle.
The runner of "winter mushroom".
(6). The flow path is not enough to pull out the slope.
3. Remedies
(1). Return the nozzle and the nozzle sleeve to the huai.
(2) reduce the injection pressure.
(3) reduce the screw forward time.
(4) increase the nozzle temperature or heat the nozzle with a separate temperature controller.
(5). Increase the cooling time, but the better way is to use a small injection port.
The cover replaces the original injector sleeve.
(6) correction of the mating surface of injector sleeve and nozzle.
(7). Appropriate expansion of the outflow tract.