0769-8539-0209 / +86-15158220988
UNIQUE SOLUTIONS MOLD LIMITED
UNIQUE SOLUTIONS MOLD LIMITED
Different treatment of plastic injection mold cooling system principles

Different treatment of plastic injection mold cooling system principles

Different 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 heated.

2. The temperature of the cavity should be higher than the temperature of the core, and the temperature difference is generally 20~30℃.

3. For texture cavity with EDM markson the surface, the cavity temperature should be higher than the general polishing surface, when the cavity must be filled with hot water or hot oil, the general temperature difference is about 40 ℃.

4. For plastic parts with dense meshes, such as speaker shell, the material flow resistance in the mesh area is relatively big and it is difficult to fill. Increasing the mold temperature in this area can improve the filling conditions, the cooling channel in the mesh area is required to be separated from the cooling channel in other areas to flexibly adjust the mold temperature.

5. The mold temperature also depends on the surface quality of the plastic part and the structure of the mold, when designing the temperature control system, it should be targeted from the perspective of the wall thickness of the plastic part, the thick wall should be cooled to prevent shrinkage and deformation; Considering the complexity, cooling should be strengthened at the place where the cavity height fluctuates greatly; the heat of the gate inserts should be strengthened; the cooling channel should be avoided as far as possible through the location of the weld line and the location of the thin wall to prevent the defect more obvious.

6. When the mold temperature is required to be high, such as 70°C or higher, the temperature control of the mold should pay attention to the following:

a. The choice of mold material requires high wear resistance and hardness, heat treatment must be carried out, and the machinability before heat treatment is good.

b. The sealing ring in the mold cooling system should be made of heat-resistant material which is to add the lead.

c. It needs to be a cooling channel between the sliding parts of the mold (such as guide pillar, guide sleeves, etc.) to prevent thermal expansion and contraction from causing movement of moving parts to lock.

d. The shutting-off part of the mold will also strain the shutting-off surface due to thermal expansion and contraction, the shutting-off angle can be appropriately increased to reduce the shutting area, the peripheral interface is formed by inserting.

图片1.png



Tags: Injection Molding | Mold Supplier | Mold Factory | Injection Mold Factory | Injection Mold Supplier | Injection Molding Factory | Injection Molding Supplier | Injection Mold |
Related News about USM Injection Mold
  • Side gate of plastic injection mold runner system design

    Side gate of plastic injection mold runner system design

    January 24, 2022In order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among...view
  • Slider designing tips 1

    Slider designing tips 1

    August 4, 20221. After the slider core pulls out, the length of staying in the guide pin slot should not be less than 2/3 of the total length of the slider, for special cases, the slider slot can be partially lengt...view
  • The T slot of slider and guider designing tips

    The T slot of slider and guider designing tips

    December 19, 20231. The T slot of slot should be designed according to the picture 1, If there is a relatively high slider, the slider T slot is not high enough which will ...view
  • Slider of side core pulling mechanisum assembling

    Slider of side core pulling mechanisum assembling

    July 22, 2022The picture 1 shows a typical guide pin driven slider parting and core-pulling mechanism, we will talk about the composition and function of the lateral core-pulling mechanism.1. Lateral forming parts...view
  • Slider designing tips 2

    Slider designing tips 2

    November 23, 2023The 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;When u...view
  • Amazing Outdoor Traveling

    Amazing Outdoor Traveling

    July 30, 2019Our team experienced wonderful outdoor walking a few weeks ago. we took a big bus from our office to the destination which is very natural and frosty with a very clean river dotted with cobblestones. we walked through the small rivers by naked feet.view