Tag - custom injection molding services

How to avoid deformation in mould manufacturing

In the process of mold manufacturing, deformation often occurs, so how to avoid the deformation in mold manufacturing?
(1) the thickness of the product shall be as uniform as possible.
(2) all parts of the cooling system are designed to make the cavity temperature uniform.
(3) the pouring system can make the material flow symmetrical, avoid warping caused by contraction in different flow directions, and try to eliminate the density difference, pressure difference and temperature difference in the cavity.
(4) the thickness of […]

Why Do Injection Moulds Need To Be Tested?

Defects in most injection molding products are caused during the plasticizing and injection phases of the injection molding parts, but are sometimes related to design irrationality, including the type of injection port, the number of mold cavities, location and size, the design of the cold and hot runner system, and the structure of the product itself. Therefore, in order to avoid product defects caused by mold design, we need to analyze the injection mold during production.
 
After the test results […]

What should we do to control the quality of plastic mould?

Now the plastic mold industry has higher and higher requirements for machine equipment and testing instruments! The price of CMM and other testing equipment is also increasing, which shows that the improvement of quality is the future development direction of the whole plastic mold industry. After more than 10 years of continuous exploration and learning, Shenzhen Mingyang Yutong technology has summed up that to ensure the quality of plastic mold products, it is also necessary to strictly control each […]

Design Of Ultrasonic Line

Ultrasonic welding in the assembly of plastic parts is commonly used to a process. ABS, PC+ABS, PP, PC, etc. these materials are suitable for ultrasonic welding. Generally used for ultrasonic two parts are required to be the same material. Ultrasonic bonding will be better. If nylon or POM is used to ultrasonic with ABS, this is not feasible.
 
Ultrasonic welding has a lot of advantages, the most critical is to meet the waterproof requirements of the product, the second ultrasonic […]

Black spots of common problems in injection molding

What is a black spot? Black spot refers to the black spots or stripes on the molded products.
Causes of black spots on injection molded parts:
1. Resin decomposition
As plastic is a chemical, it will decompose gradually when it is heated above the melting point. The higher the temperature, the longer the time and the faster the decomposition. In addition, there are some areas in the barrel that are easy to retain resin, such as check check valve and thread. The […]

SPI Mold Standard–Wall Thickness Design

Product structure is undoubtedly the key factor to determine the price of the mold, the realization of a product function has a variety of different design, different design determines the mold manufacturing method is not the same, determine the price of the mold will be different, some structure only need us to pay attention to some design principles, may be able to save a lot of cost.
 
If we ignore the wall thickness of the product, the appearance problems will […]

Characteristics and injection process of PC + ABS injection material

What is PC + ABS material?
PC plastic is a new type of thermoplastic with 90% transparency, so it is called transparent metal. It is very hard, with high impact strength and high dimensional stability, as well as a wide range of application temperature, good electrical insulation, heat resistance and non-toxic properties ABS is a tough and rigid thermoplastic. It is a blend or terpolymer of acrylonitrile, butadiene and styrene. Styrene endows ABS with excellent moldability, gloss and rigidity; acrylonitrile […]

Key Points Of Boss Design

Screw post is also called boss, which is a feature of most products. What key points should we pay attention to when designing the structure? Let’s have a look:
 

The wall thickness of the boss, at the time of structure design, we need to consider the strength of the boss, so as far as possible the post do thick wall thickness, but this will lead to positive forming parts shrink, we can design according to the main body of the […]

How to choose injection mold steel?

How to choose the injection mold steel reasonably is a complex project, and it is also the key link of the injection mold manufacturing. This is an important work related to the service life of the mold and the cost of the injection mold. Generally, the materials used to make plastic injection mold need to have certain hardness and wear resistance first. Secondly, it should have strength and toughness. Before choosing the injection mold steel, we need to know […]

The reason bubble caused in plastic product of injection molding

How should plastic product appear bubble to do? Our engineer’s answer is that the reason may in the equipment, plastic mold, and may also in the injection process, the following is the reason analysis of the process, hope to help you solve the problem.
 

The back pressure of screw pre-molding is too low and the rotation speed is too high, which causes the screw to return too fast, and the air is easily pushed to the front end of the […]