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
  • Gate position determination of plastic injection mold runner design system

    Gate position determination of plastic injection mold runner design system

    Jan 17, 2022In the selection of gate location, the following issues should be paid attention to: 1. The gate position should be set at the maximum wall thickness of the plastic part, so that the plastic melt...view
  • Five Major Steps of the Injection Mold Production Process

    Five Major Steps of the Injection Mold Production Process

    Dec 9, 2021Injection mold manufacturing can be roughly divided into the following steps: Process analysis of plastic products. Before the mold design, the designer should fully analyze and study whether the...view
  • Design standard of exhaust slot

    Design standard of exhaust slot

    Mar 3, 2022The exhaust system should ensure that the gas in the cavity is smoothly discharged, and also prevent the material from entering and exhausting channels from causing flashing of the product or blockage...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
  • Plastic injection mold common cooling gate

    Plastic injection mold common cooling gate

    Feb 17, 20221. Straight-through cooling water gate: the straight-through cooling gate is the most commonly used gate for plastic injection mold, and it is also the most convenient type of cooling for processing....view
  • Conformal cooing channel of plastic injection mold

    Conformal cooing channel of plastic injection mold

    Feb 23, 2022The conformal cooling gate is a new type of mold cooling gate based on 3D printing technolog, because of its processing characteristics, the conformal cooling gate can fit the shape of the product...view