Mold design points

Work steps

Review items before design

1. Mold material
2. Molded product
3. Molding machine selection
4. Basic structure of die base

Important items of mold design

1. Multi-color injection combination

2. runner system
(1) The injection pressure is low.
(2) Fast filling is completed, which can increase the output.
(3) It can be uniformly injected, and the product quality is better.
(4) Reduce waste and shorten injection time.

3. Forming equipment:
(1) The injection volume of each injection cylinder determines which material cylinder is used for which color.
(2) The position and stroke of the striker.
(3) The configuration of the water circuit, oil circuit, and circuit on the rotating disk.
(4) The bearing weight of the rotating disc.

4. Mold base design: mold core configuration design
First of all, considering that the male mold side of the mold must be rotated 180 degrees, the mold core settings must be arranged in a cross-symmetrical arrangement, otherwise the mold cannot be closed and formed.
(1) Guide post: It has the function of guiding the male mold and the female mold. Concentricity must be maintained in the multi-color mold.
(2) Return pin: Since the mold must rotate, the ejector plate must be fixed, and a spring is added to the return pin to keep the ejector plate stable.
(3) Positioning block: ensure that the two mold bases are not offset due to the gap of the screws when they are fixed on the large solid plate.
(4) Adjustment block (wear-resistant block): It is mainly used to adjust the z coordinate value of the mold height when the mold is clamped.
(5) Ejection mechanism: The design of the ejection method is the same as that of the general mold.
(6) Design of cooling circuit: The cooling circuit design of mold one and mold two should be the same as possible.