Pouring system

Pouring system

1. the gate setting should not affect the product appearance and meet the product assembly.

2. The cross-section and length of the runner should be designed reasonably to shorten the flow as much as possible and reduce the cross-sectional area to shorten the filling and cooling time under the premise of guaranteeing the forming quality, and the plastic lost in the pouring system should be the least.

3. The cross section of the three-plate mold sprue at the back of the front template should be trapezoidal or semi-circular.

4. The three-panel mold should have a break in the sprue plate, the sprue inlet diameter should be less than 3 mm, and a 3 mm deep step recessed into the sprue plate at the ball end.

5. The ball pulling rod should be fixed reliably, it can be pressed under the positioning ring, fixed by headless screw or pressed by pressure plate.

6. The sprue and runner should be processed by machine according to the size of the drawing, not allowed to be processed by hand.

7. The point sprue gate should be in accordance with the specification.

8. the front of the manifold should be extended as a cold material cavity.

9. the Z-shaped buckle of the pulling rod should have a smooth transition.

10. The manifold on the parting surface should be round, and the front and rear mold should not be misaligned.

11. The submerged gate on the top bar should have no surface shrinkage.

12. The diameter and depth of the cold cavity of transparent products should be in accordance with the design standard.

13. the material handle is easy to remove, the appearance of the product is free of gate marks, and there is no residual material handle at the product assembly.

14. The two parts of the submerged sprue should be nitride treated and the surface hardness should reach HV700.