Plastic Injection Molding

Design scheme and heat treatment of injection mold

At present, there are more and more plastic products, so there are more and more injection mold enterprises. However, the quality of molds produced by each enterprise is also different. Some people have doubts. Why is the quality of the same technology and materials so different? Projuni injection mold manufacturers will tell you about the reasons here.
In order to avoid similar problems, first of all, after the injection molding product design scheme is determined, it is necessary to fully […]

Criteria to measure whether the die processing is qualified

For manufacturers specializing in mold processing, whether the finished mold products processed are standard and qualified will directly affect the production quality of subsequent products. Therefore, for some enterprises that need to use molds for industrial production, when purchasing molds, it is important to pay attention to whether they can meet the production quality and the subsequent application needs.
When selecting a mold, we can measure whether a mold is up to standard from the following aspects
1. Accuracy. No matter […]

How will injection molding be affected

Mold designers must have rich experience in design and injection molding, and must consider the relationship between these factors and injection molding conditions and their apparent factors, such as injection pressure, cavity pressure and filling speed, injection melt temperature and mold temperature, mold structure, gate type and distribution, and discuss the influence of gate area, wall thickness, filler content in plastic, plastic crystallinity and orientation. The influence of the above factors also varies with plastic materials or other molding […]

Learn about precision parts processing

There is a set of processes for the division and sequence of precision parts processing. In this article, we will introduce the content of precision parts processing.
(1) The connecting rod itself has low stiffness and is easy to deform under external force. The connecting rod is a die forging with large working allowance for machining holes, which is easy to generate residual stress in the cutting process. Therefore, in the process planning, the main surface roughness and finishing processes […]

Reminder about problems of injection molding containers

Injection molding is to inject molten plastic into a closed mold with low temperature through a nozzle under high pressure. Thermoplastic and thermosetting plastics can be molded by injection molding, and can be used to make various box type packaging containers, such as various turnover boxes and small boxes. For box type packaging containers, the following aspects shall be considered in the structural design:
1、 Wall thickness of container
1. Thickness: the wall thickness of the container is mainly determined by […]

Tips on filling of injection molding

Injection molding is a step that many molds need to go through. This step is divided into four stages, and filling is the first stage. This does not mean that filling is more important in the injection molding process. No one can be separated from the four stages. The following is mainly about filling.
First of all, we need to understand that filling is the first step of injection molding. It needs to work at the beginning of mold closure. […]

How does the temperature of the injection mold affect the plastic parts?

There are many reasons that affect the cooling of the injection mold, such as the shape of the plastic part and the design of the parting surface, the type, temperature and flow rate of the cooling medium, the geometric parameters of the cooling pipe, the layout of our space, the mold material, the melt temperature, and the requirements for the plastic part, which all have a certain impact on the temperature of the injection mold and the plastic part. […]

Bubbles have always been a very difficult problem in the process of injection molding. How to deal with it

Injection mold belongs to a casting method. Since it is casting, there will be various problems in the processing process. The occurrence of problems proves that we have made minor errors in the processing process. However, some are easy to deal with, while others are not easy, such as bubbles, because bubbles are a problem that many manufacturers are struggling with. Today, I would like to share some bubble treatment methods:
1、 When the thickness of the product is large, […]

Special attention shall be paid to injection molding of medical mold

There are some points to pay attention to when injection molding medical molds. Because medical molds are precision types, we should improve all the dimensions so that the mold will not change too much. For injection mold engineers, it is very important to grasp the size of the injection parts and the size of the mold, which needs to be controlled according to the design drawing, manufacturing process and molding process.
In addition, we also need to consider the appropriate […]

What should we do to make molds better

I believe that everyone should know something about the injection mold. The main content of this article is the polishing of the injection mold, why it should be polished, and what should be paid attention to in polishing.
There are two main purposes for polishing injection molds; One is to make the surface of the product produced by the mold smooth, beautiful and beautiful by increasing the mold finish; the other is that we can improve the mold to easily […]