0769-8539-0209 / +86-15158220988
UNIQUE SOLUTIONS MOLD LIMITED
UNIQUE SOLUTIONS MOLD LIMITED
The sub gate of the plastic injection mold runner system

The sub gate of the plastic injection mold runner system

 In 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 them, the side gate is divided into tab gate, ear protection gate, fan gate, thin gate and so on, the sub gate is divided into sub gate, banana gate,  downturning gate and so on.


图片1.png

                                                             

                                                                          Picture 1a


According to the production automation, it is divided into manual removal and automatic removal, the side gate and direct gate are need to be manually removed after production,but the sub gate and pin-point gate and valve gate of hot runner are automatic removed.


Sub gate: The sub gate is evolved from pin-point gate and has a similar characteristic as pin-point gate, the difference is that the sub gate in one side of parting surface and enters the cavity in an oblique direction. Opening the mold elbow can automatically pull off the gate, and the gate position can be set on the side, end and back of the plastic part, so that there is no gate mark on the outer surface of the plastic part (as shown in picture 1ab), the structure of the same elbow mold can be simplified to a single parting surface structure.


图片2.png

                                                                

                                                                             Picture 1b


Advantages:

1. The gate can be cut off automatically, eliminating the need for subsequent processing and realizing automatic production;

2. The gate position selection is big, it can be set freely on the outside or inside of the part;

3. The gate is small, which has little effect on the appearance of the product, and some sub gates are hard to see with the eyes;

4. The mold structure can be simplified, for some products with high appearance requirements, we must make a three-plate mold to realize it if we use the pin-point gate, but it only two-plate mold is needed if changing to sub gate, which reduces the mold structure complexity greatly, it also reduces the mold thickness and save the mold cost.


图片3.png


Disadvantages:

1. Pressure loss too much, it ususall in the range of  Ø0.8~2.0mm due to the sub gate is relatively small, a large part of the pressure will be lost when the plastic pass through the small gate;

2. The processing is more complicated, this kind of small gate generally needs to place the mold core into a vertical angle to follow the gate, and then use EDM to make process(as shown in picture 2);



Tags: Injection Molding | Mold Supplier | Mold Factory | Injection Molding Factory | Injection Molding Supplier | Injection Mold Factory | Injection Mold Supplier | Injection Mold |
Related News about USM Injection Mold
  • Plastic part ribs desigining

    Plastic part ribs desigining

    January 5, 2022The ribs function: The role of ribs is to improve the strength and rigidity of the plastic parts, prevent the plastic parts from being distorted and deformed, and will not cause the appearance of t...view
  • USM Purchased Two New Sodick Edm Equipments

    USM Purchased Two New Sodick Edm Equipments

    November 4, 2021USM purchased 2 new EDM Sodick equipment arrived a few months later, just finished the assembling and adjustment, we are very excited to see the processing soon with our new projects soon.view
  • Unique Solutions Mold Profile

    Unique Solutions Mold Profile

    December 28, 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 meters.view
  • Pin-point gate of plastic injection mold runner system design

    Pin-point gate of plastic injection mold runner system design

    January 25, 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
  • Factors affecting the cooling rate of parts by injection molding

    Factors affecting the cooling rate of parts by injection molding

    February 10, 2022It should be shaped by cooling to get stable plastic part after plastic filling the cavity and core side, so most injection molds need to be equipped with cooling devices to make the mold temperature ...view
  • Plastic cooling factors by injection parameter

    Plastic cooling factors by injection parameter

    February 11, 20221. Plastic parts design: mainly for the wall thickness of plastic products. The thicker thickness of the product, the longer the cooling time. Generally speaking, the cooling time is approximately pro...view