Full range of plastic injection mould manufacturer in China
FBELE injection molding equipment has 35 injection molding machines of several excellent brands, with a tonnage of 35t-1550t and a daily output of 110000 sets, which can meet the requirements of high-precision product injection.
- Accurate size for plastic injection mould
- Low cost
- Complex mold shape
- Top 10 brand of plastic injection mould
What is Plastic Injection Mould
Injection molding, also known as injection molding, is a molding method of injection and molding. The advantages of injection molding method are fast production speed, high efficiency, automation of operation, many colors and varieties, simple to complex shapes, large to small sizes, accurate product sizes, easy renewal of products, and the ability to form parts with complex shapes. Injection molding is suitable for mass production and molding processing fields such as products with complex shapes.
At a certain temperature, the fully molten plastic material is stirred by the screw, injected into the mold cavity with high pressure, and then cooled and solidified to obtain the molded product. This method is suitable for the mass production of parts with complex shapes and is one of the important processing methods.
Why Purchase FBELE Plastic Injection Mould
Electronic products have become very popular consumer products in the consumer market, and electronic products often have extremely high requirements for the size of the shell. FBELE can meet the requirements of product accuracy.
Injection mold manufacturing greatly reduces the development costs of molds, so that product manufacturers can flexibly decide the upgrading time according to the market sales situation.
FBELE uses best steel, which greatly improves the service life of the mold to 1million times or more
Injection mold manufacturing with good supply and service can now be produced in an automated mode. This mold development technology that connects computers and software systems can produce all kinds of product molds with more complex shapes
Advantages of Plastic Injection Mould
After developing the product mold, the enterprise will effectively improve the mass production speed of products, so that products can quickly enter the market and win a weak but decisive opportunity in the horizontal competition. However, with the higher degree of accuracy requirements of many precision products, traditional mold manufacturing can no longer meet the mold opening needs of complex shapes. Many enterprises will adopt injection mold manufacturing processes with higher levels but lower costs to complete the rapid mold manufacturing of complex products. What are the main advantages of mature injection mold manufacturing technologies that can meet the production of more complex molds?
Advantage 1: more accurate mold size
With the rapid development of science and technology, electronic products have become very popular consumer products in the consumer market, and electronic products often have very high requirements for the size of the shell. Therefore, many electronic product manufacturers will choose injection mold manufacturing to develop product molds. The product molds manufactured by supplying injection mold with stable performance can better meet the manufacturer’s requirements for product accuracy.
Advantage 2: more complex mold shape
Injection mold manufacturing with good supply and service can now be produced in an automated mode. This mold development technology that connects computers and software systems can produce all kinds of product molds with more complex shapes, effectively filling the disadvantage that traditional molds cannot complete mold development for products with complex appearance, which is also an important advantage of injection mold manufacturing.
Advantage 3: low mold production cost
Traditional mold manufacturing requires a lot of time and money, so the upgrading of products that arrive at the account is usually slow under the premise of excessive investment costs. Injection mold manufacturing greatly reduces the development costs of molds, so that product manufacturers can flexibly decide the upgrading time according to the market sales situation. From this point of view, the low-cost advantage of injection mold manufacturing is also very obvious.
Generally speaking, the growing maturity of injection mold manufacturing technology has gradually reduced the traditional mold development to the edge of elimination, because reliable injection mold manufacturing can not only produce mold products with more accurate dimensions, but also help manufacturers quickly upgrade their products with lower production costs. In addition, this technology is also of great help to the mold opening ability of various complex workpieces.
Main Parameters of Plastic Injection Mold
- Injection pressure
Injection pressure is provided by the hydraulic system of the injection system. The pressure of the hydraulic cylinder is transmitted to the plastic melt through the screw of the injection molding machine. The plastic melt, driven by the pressure, enters the vertical channel (also the main channel for some molds), the main channel and the shunt channel of the mold through the nozzle of the injection molding machine, and enters the mold cavity through the gate. This process is called the injection molding process, or the filling process. The existence of pressure is to overcome the resistance in the melt flow process, or conversely, the resistance in the flow process needs to be offset by the pressure of the injection molding machine to ensure the smooth progress of the filling process.
In the injection molding process, the pressure at the nozzle of the injection molding machine is the highest to overcome the flow resistance in the whole process of the melt. Then, the pressure gradually decreases along the flow length to the front of the melt. If the internal exhaust of the mold cavity is good, the final pressure at the front of the melt is atmospheric pressure.
There are many factors that affect the filling pressure of melt, which can be summarized into three categories: ⑴ material factors, such as the type and viscosity of plastic; ⑵ structural factors, such as the type, number and location of the gating system, the cavity shape of the mold and the thickness of the product; (3) molding process elements.
- Injection molding time
The injection time mentioned here refers to the time required for the plastic melt to fill the mold cavity, excluding auxiliary time such as mold opening and closing. Although the injection time is very short and has little effect on the molding cycle, the adjustment of injection time plays a great role in the pressure control of gate, runner and cavity. Reasonable injection time is conducive to the ideal filling of melt, and it is of great significance to improve the surface quality of products and reduce dimensional tolerance.
The injection time is much lower than the cooling time, about 1/10 ~ 1/15 of the cooling time. This law can be used as a basis for predicting the whole molding time of plastic parts. In mold flow analysis, only when the melt is completely driven by the screw rotation to fill the cavity, the injection time in the analysis result is equal to the injection time set in the process conditions. If the pressure maintaining switch of the screw occurs before the cavity is filled, the analysis result will be greater than the setting of the process conditions.
- Injection temperature
Injection temperature is an important factor affecting injection pressure. The barrel of the injection molding machine has 5 ~ 6 heating sections, and each raw material has its appropriate processing temperature (for detailed processing temperature, please refer to the data provided by the material supplier). The injection temperature must be controlled within a certain range. The temperature is too low, and the melt plasticization is poor, which affects the quality of the formed parts and increases the process difficulty; The temperature is too high, and the raw materials are easy to decompose. In the actual injection molding process, the injection temperature is often higher than the barrel temperature. The higher value is related to the injection rate and material performance, up to 30 ℃. This is due to the high heat generated by the shear of molten material when it passes through the injection port. There are two ways to compensate for this difference in mold flow analysis: one is to try to measure the temperature of melt injection into the air, and the other is to include the nozzle in modeling.
- Pressure holding pressure and time
At the end of the injection molding process, the screw stops rotating and just moves forward. At this time, the injection molding enters the pressure maintaining stage. During the pressure maintaining process, the nozzle of the injection molding machine continuously fills the cavity to fill the empty volume due to the shrinkage of the workpiece. If the pressure is not maintained after the cavity is full, the workpiece will shrink by about 25%, especially the shrinkage trace will be formed at the rib due to excessive shrinkage. The packing pressure is generally about 85% of the maximum filling pressure, which of course should be determined according to the actual situation.
- Back pressure
Back pressure refers to the pressure to be overcome when the screw reverses and retreats for material storage. The use of high back pressure is conducive to the dispersion of pigments and the melting of plastics, but at the same time, it prolongs the screw retraction time, reduces the length of plastic fibers, and increases the pressure of the injection molding machine. Therefore, the back pressure should be lower, generally not more than 20% of the injection molding pressure. When injecting foam plastic, the back pressure should be higher than the pressure formed by gas, otherwise the screw will be pushed out of the barrel. Some injection molding machines can program the back pressure to compensate for the reduction of screw length during melting, which will reduce the input heat and reduce the temperature. However, because the result of this change is difficult to estimate, it is not easy to make corresponding adjustments to the machine.
China Leading Plastic Injection Mold Supplier
FBELE injection mold, secondary injection mold, rich experience, wide application fields, development manufacturers, customization, product optimization, substantial cost reduction, product development, injection molding integration, support customization on demand
FBELE has been manufacturing injection molds for many years, and is a mold supplier of Volkswagen and other brands Business scope: washing machines, refrigerators, air conditioners, bathroom, automobiles, lamps, consumer electronics, electronic accessories, mold injection molding, etc Advanced equipment, exquisite technology and short manufacturing cycle
FBELE injection mold, embedded plastic mold, top-notch industry, composition of injection mold, hot runner injection mold, carefully achieve the beauty of mold, 25 years of injection mold design and manufacturing experience, free optimization, mold selection of top 500 enterprises
What does Customer say about FBELE Company
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