The principle of mold temperature balance in plastic mold cooling system design

The principle of mold temperature balance:

1. Due to the complexity of the plastic parts and mold structure, it is difficult to make the temperature of the mold completely consistent, but should be make the mold temperature as balanced as possible, and there should be no local overheating or overcooling.

2. The high temperature areas in the mold including: near the sprue bushing, near the gate, and near the thick wall of the plastic part, these areas should be cooled.

3. Heating is sometimes required at thin-walled areas.

4. During the cooling process of the mold, due to the phenomenon of thermal expansion and contraction, the plastic part will slightly detach from the fixed mold cavity when the solid shrinks, while the tightening force on the core is getting bigger and biggger, and the plastic part is detaching, the more heat before demolding is transferred to the core, so the core must be focused on cooling.

5. To control the temperature difference of the cooling water at the inlet and outlet of the cooling channel, the temperature difference should be less than or equal to 2°C during precision injection molding, and in general, the temperature difference should be less than or equal to 5°C. the total length of the cooling gate (series length) should not be too long, preferably less than 1.5m, and the length of the dead zone should be as short as possible.

6. The cooling channel must be designed for the stripper in the three-plate mold, t, so that the mold temperature can be stabilized during the production process and the molding cycle can be shortened.

图片1_(3).png

Tags: Injection Mold | Injection Mold Supplier | Injection Mold Factory | Mold Factory | Mold Supplier | Injection Molding |
Related News about USM Injection Mold
  • Plastic injection mold runner system design

    Plastic injection mold runner system design

    Jan 16, 2022The gate is the connecting part between the runner and the cavity, and is also the end part of the injection mold gating system, the molten plastic enters the cavity and core side through the gate...view
  • Unique Solutions Mold Profile

    Unique Solutions Mold Profile

    Dec 27, 2021USM (UNIQUE SOLUTIONS MOLD LIMITED) was founded in 2012 and is located in Dongguan City, Guangdong Province, a famous mold manufacturing province in China, the plant covers an area of 3500 square...view
  • What is Plastic Injection Mold?

    What is Plastic Injection Mold?

    Dec 27, 2021The plastic mold is used for injection molding, it is assembled with cavity, core and side slider together, with ejection system and adjustments to produce plastic products by different shapes and...view
  • USM Blogo Opening

    USM Blogo Opening

    Oct 27, 2021Hello everyone! Our blog is open today, it is very glad to have the opportunity to meet you here, welcome to visit us whenever you need. USM is a professional plastic injection mold and molding...view
  • Different treatment of plastic injection mold cooling system principles

    Different treatment of plastic injection mold cooling system principles

    Feb 22, 2022Different treatment principle: 1. The mold temperature is different according to the different plastics, when the plastic requires the molding temperature of the mold to be ≥80°C, the mold must be...view
  • Slider designing tips 2

    Slider designing tips 2

    Nov 22, 20239. The molding parting surface of the slider molding should be made as a shut-off surface as possible, and the width of the shut-off part should be at least 8mm, and do not make a shut-off surface;...view