0769-8539-0209 / +86-15158220988
UNIQUE SOLUTIONS MOLD LIMITED
UNIQUE SOLUTIONS MOLD LIMITED
Plastic injection mold runner system design points

Plastic injection mold runner system design points

 Blog-11动画.gif

When designing the gating system, Firstly, we should consider making the plastic melt fill the cavity with core side quickly to reduce pressure and heat loss; secondly, it should be economically considered to minimize the proportion of waste generated by the runner; finally, it should be easy to repair the gate mark on the plastic part.


The main points of gating system design are as follows:

1. The gate positio should ensure that when the plastic flows into the cavity, it faces the wide part of the cavity, that is, the melt should flow from the thick-walled part of the cavity into the thin-walled part. If the melt flows from the thin-walled part to the thick-walled part, the speed will drop quickly and the temperature will drop rapidly which is not conducive to filling;

2. In order to prevent the plastic rushing to the cavity, core or insert directly, it is necessary to ensure that the plastic melt can flow to all parts of the cavity as soon as possible and to avoid deformation of the core or insert;

3. Try to avoid making plastic parts cause weld marks, and make the weld marks occur in unimportant parts;

4. The gate position and its plastic inflow direction can flow in evenly along the parallel direction of the cavity when the plastic flows into the cavity, and it is conducive to the discharge of gas in the cavity;

5. If fully automatic operation is used during production, it must be ensured that the condensate of the gating system can be smoothly and automatically demolding together with the plastic parts;

6. There should be a good venting structure and sufficient cold well in the gating system, the air and cold material in the gating system should be brought into the cavity as less as possible, which will affect the parts quality;

7. When a mold has multiple cavities, it is necessary to prevent the plastic parts with very different sizes from being placed in the same mold, if the part size differs by more than 4 times, it is difficult to make filling balanced;

8. If the projected area of the plastic part is big, we should avoid opening a gate on one side of the mold when designing the gating system, otherwise it will cause uneven force during injection molding;

9. The design of gating system should consider shortening the production cycle and increasing productivity.


图片1.png



Tags: Mold Supplier | Mold Factory | Injection Mold | Injection Mold Supplier | Injection Mold Factory | Injection Molding Factory | Injection Molding Supplier |
Related News about USM Injection Mold
  • Venting system of plastic injection mold introduction

    Venting system of plastic injection mold introduction

    February 28, 2022Hello everyone, thanks for attention. We’ve discussed about the temperature control system earlier, now we are going to talk about the mold venting information in following 11 articles, from the reas...view
  • 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
  • The basic points of designing gas-assisted injection molding

    The basic points of designing gas-assisted injection molding

    April 18, 20221. Firstly, considering the suitable wall thickness areas needs to be injected and hollowed out, and then decide how to connect them with the gas channel;2. The gas channel should be arranged in balan...view
  • Conformal cooing channel of plastic injection mold

    Conformal cooing channel of plastic injection mold

    February 24, 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 wel...view
  • New Five-axis CNC Machine Arrival

    New Five-axis CNC Machine Arrival

    December 28, 2021The new 5 axis CNC machining machine has arrived in our workshop on 6th Nov. 2021 and is now putting into use.GMU-6350 type CNC machining machineWorking stroke (XYZ): 630*500*550Maximum loading: 800kg...view
  • Design Tips of Vacuum Venting Mold

    Design Tips of Vacuum Venting Mold

    March 31, 2022There are some regular venting way which are parting surface venting, insert venting, insert pin venting and well-ventilated steel, but there is a special way is vacumm venting, it will need vacumm ma...view