Key points of mold design

1、 Pre design review matters

1. Mold material

2. Formed products

3. Selection of forming machine

4. Basic structure of mold base

2、 Important items of mold design

1. Multi color projection combination method

2. Runner system

(1) The injection pressure is low.

(2) Rapid filling completion can increase production.

(3) It can be evenly emitted and the product quality is good.

(4) Reduce waste and shorten injection time.

3. Forming equipment:

(1) The injection volume of each injection cylinder determines which cylinder is used for that color.

(2) The position and stroke of the hitting rod.

(3) Configuration issues with water, oil, and electrical circuits on the rotating disc.

(4) The bearing weight of the rotating disc.

4. Mold seat design: Mold core configuration design

Firstly, considering that the male mold side of the mold must rotate 180 degrees, and the mold kernels must be arranged symmetrically and crosswise, otherwise the mold cannot be formed.

(1) Guide pillar: It has the function of guiding the male and female molds. It is necessary to maintain concentricity in multi-color molds.

(2) Return pin: Due to the necessary rotation of the mold, it is necessary to fix the ejector plate and add a spring to the return pin to keep the ejector plate stable.

(3) Positioning block: Ensure that the two mold seats are fixed to the large fixed plate without any deviation caused by screw clearance issues.

(4) Adjustment block (wear-resistant block): mainly used for adjusting the height z coordinate value error of the mold during mold closing.

(5) Ejection mechanism: The design of the ejection method is the same as that of a general mold.

(6) Cooling circuit design: The cooling circuit design of mold 1 and mold 2 should be as similar as possible.

Article source: excerpts from Baidu Baike