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In general, the precision of plastic injection mould making is very important, which has direct impact on the quality and the performance of plastic injection mould. During plastic injection mould making, the selection of reasonable injection mould making process, the effective control of injection mould processing tool, and the powerful control of injection mould shape forming can improve the processing precision of plastic injection mould, thereby improve its working performance.
Plastic injection mould
The injection mould temperature depends on the crystallinity of plastic, the size and structure of plastic injection moulded product, the performance requirements, and other process conditions such as melt temperature, injection speed, injection pressure, plastic injection moulding cycle, and the quality of plastic injection moulded parts. For amorphous polymer, the melt solidifies as the temperature decreases after being injected into the mould cavity, but no phase transition occurs. The injection mould temperature mainly affects the viscosity of the melt, that is, the filling rate. Therefore, for amorphous plastics with lower melt viscosity and medium density such as polystyrene, cellulose acetate, etc., adopting a lower injection mould temperature can shorten the cooling time.
With the development of computer technology, CAD technology has become an important tool for product designers to carry out R&D. Three-dimensional modeling technology has been widely used by plastic injection mould manufacturer in product and injection mould design, program review, automated processing and injection mould manufacturing, and management etc. In the actual injection mould development and injection mould manufacturing process, the technical data received by the designer may be a three-dimensional model of various data types, but in many cases, the physical model of the product is obtained from the upstream manufacturer. Designers need to transform physical information into CAD models in a certain way, which applies to reverse engineering.
Injection moulding for household appliancesThe injection moulding processing methods for plastic products for household appliances mainly include injection moulding, extrusion moulding, thermoforming, hollow moulding, lamination moulding, compression moulding, transfer moulding, foam moulding, casting moulding, inlay moulding, encapsulation, etc., among which mainly is injection moulding. In recent years, some new plastic processing technologies and new equipment have been widely used in the plastic moulding of household appliances, such as precision injection moulding, rapid prototyping technology, melt injection moulding technology, gas-assisted/water-assisted injection moulding technology, electromagnetic dynamic injection moulding technology and coating membrane injection moulding technology.
Compared with other types of moulds such as stamping dies and die-casting dies, there 5 obvious features of injection mould making. The analysis given by ACO Mold is as follows:

1. The mould cavity and core are three-dimensional
The outer and inner shape of the plastic part is directly moulded by the mould cavity and the core. These complicated three-dimensional surface processing is relatively difficult, especially the moulding surface in blind hole of the mould cavity. If the traditional injection mould making method is used, mould makers are required to have high technical level, many auxiliary fixtures, many tools are required, and the injection mould making cycle is long.
Injection mould making
Injection moulding for phone case Mobile phone cases are usually made of PC (polycarbonate) or PC+ABS materials. Because of the poor fluidity of PCs, high mould temperature and high temperature filling are usually adopted in the injection moulding for phone case. The gates adopted are usually point gates. When filling, it is necessary to adopt graded injection moulding, find the position of the gate and the switching position of VP (injection-holding pressure), which will be very helpful for solving the abnormalities such as gate gas marks and burrs.

The following are the key points of the moulding conditions for the mobile phone case, and the setting points of the moulding parameters such as the melt temperature, the mould temperature, the injection speed, and the back pressure are explained.
In the past 10 years, injection mould industry has been developing rapidly in China. ACO Mold located in Shenzhen China, is mainly engaged in a series of plastic moulding processing services, such as the mould R&D, mould making, plastic injection moulding etc. ACO Mold injection moulding factory manufactures a wide range of plastic moulds for various household appliances, computer products, communication products, power tools and CD, DVD, MP3, MP4, etc. The largest mould size that we can make is 2 meters * 1 meter, the most heavy weight can reach 8 tons. ACO Mold factory now has large imported CNC machines and other precision machining equipments, using the world's advanced graphics software design and processing system as technical support. The monthly production of moulds can reach 50 sets. If you are looking for China plastic moulding manufacturer, maybe you can contact us by email to see more plastic mould pictures.Injection moulding project management
What is precision injection mould?
Precision injection moulds are tools used in mass manufacturing of plastic parts through the precision processing methods. Specifically, the molten material is injected into the mould cavity by high pressure, and after cooling and solidifying, various injection moulded part are obtained. The dimensional accuracy of the injection moulded parts produced by precision injection moulds can reach 0.01 or less, usually between 0.01 and 0.001 mm. Precision injection moulds are distinguished from conventional injection moulds. Because the plastic parts manufactured by precision injection moulds meet the high precision requirements, and have good mechanical properties and dimensional stability, precision injection moulds are commonly used in machinery, electronics, instrumentation, communications, automotive and aerospace industries. Precision injection moulding products have replaced a number of high-precision metal parts and are widely used. With Chinese plastics industry development, nowadays, precision injection moulds have used in various industries, but how much do you know about precision injection moulds? Today, ACO Mold Precision injection moulding factory takes you to understand it.
Injection mould
How ACO Mold ensure injection mould precision?
ACO Mold equipped with the Japanese import Makino, Toshiba, Mitsubishi top precision processing equipment, to ensure the accuracy of each set of injection mould. We have the ability of manufacturing precision injection mould with the accuracy between 0.001mm-0.05mm. At the same time, with the increasing requirements of customers for the delivery capacity of precision injection moulding factory, automatic processing has become more and more important. The A100E in horizontal CNC equipment can hold 302 tools, and the A66E is automatically operated for 18 hours. The maximum speed of the machine such as F5, A33i and A56i in the vertical CNC is 30,000 rpm.
ACO Mold is China plastic injection mould manufacturer located in Shenzhen, China, established in 2000, mainly develops, designs and manufactures all kinds of plastic injection moulds, and provides one-stop services such as external injection moulding, spray coating, silk screen printing, pad printing, electroplating and injection moulded parts assembly. We offer custom injection mould making and plastic parts production for global companies. We serve a wide range of industrial, including household application, auto, electronic, medical, agriculture etc. Below are 4 cases of injection mould making.


Many companies often encounter these problems when they are selecting China plastic injection mould supplier:
  1. Communication problems: Language barriers, different terminology, little or bad English skills for engineers.
  2. Cultural differences: Eastern and Western business practices can be very different, often leading to misunderstandings, errors, poor quality and delays.Injection mould
  3. The empty promise: Sometimes you go to the injection mould factory and you will find that they can't provide what you need. When you need it, they don't have the technology or resources to provide you with the quality you want. Many countries have backward infrastructure and communication equipment. As a result, the product cannot be delivered on time.
  4. Quality certification: ISO certification is an expensive and time-consuming process. Many injection mould factories are not qualified in Asia. They do not have quality control systems. They do not have the proper technology or experience in producing products. They cannot cooperate according to your specific specifications and timetable.

Moulds are widely used, and the plastic injection moulded parts in modern manufacturing requires almost all of them. Therefore, the mould industry is an important part of the national high-tech industry and an important and valuable technical resource. Optimize the system structural design of the plastic injection mould and the CAD/CAE/CAM of the profile, and make it more intelligent, to improve the plastic injection moulding process and mould standardization of the injection moulded part. Improving the precision and quality of the plastic mould manufacturing, and reduce the amount of grinding and polishing of surface of the mould part and injection mould manufacturing cycle. Using special materials with high performance and easy-to-cut performance for various types of mould parts to improve mould performance to adapt to market diversification and new product trial production. Applying rapid prototyping technology and rapid moulding technology to quickly manufacture plastic injection mould or die-casting mould, etc. All of them will be the development trend of plastic mould manufacturing technology in the next 5 to 20 years.
The time required for a plastic, such as nylon, POM, PC/ABS, to complete once injection moulding process is called the moulding cycle. It mainly includes injection time and cooling time.

The injection moulding cycle directly affects labor productivity and equipment utilization. Therefore, in injection moulding manufacturing, the relevant time in the moulding cycle should be shortened as much as possible under the premise of ensuring plastic parts quality. Injection time and cooling time are of the utmost importance throughout the moulding cycle and they have a decisive influence on the quality of injection moulded parts. The feeding time in the injection time is directly inversely proportional to the feeding rate, and the feeding time in injection moulding is generally about 3-5 seconds. The holding time in the injection time is the pressure time of the plastic in the cavity, which accounts for a large proportion in the whole injection time, generally about 20-120 seconds (the extra-thick parts can be as high as 5-10 minutes).
injection moulding
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Online tour of our plastic injection mould making factory in Shenzhen China.
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