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plastic injection molding guideline
Injection molding is a commonly used plastic processing method, which is widely used in various industries. It works by injecting molten plastic into a mold so that it forms the desired product shape after cooling. The process flow of injection molding includes key steps such as mold preparation, plastic melting, injection molding, cooling curing and product demoulding. This article will introduce the process flow of injection molding and its key steps to help readers better understand and apply this processing technology.
First, mold preparation
Mold preparation is the first step in injection molding. In the mold preparation stage, the following work needs to be done:
1. Mold inspection: Check the integrity, wear and damage of the mold to ensure that the mold can be used normally. Expecially the the mold cavity is Polish, in the wet area, usually the mold cavity is easy to rust, so need check the mold surface to make sure the mold is in good condition.
2. Mold installation: the mold is installed on the injection molding machine, and adjusted and fixed to ensure the stability and accuracy of the mold. Connect the water pipe, If the mold is hot runner, also need connect the hot runner tempreture controller, if the mold need cold water cooling, need connect the cold water generating maching.
3. Mold preheating: For some special requirements of the mold, it is necessary to preheat to reach the required temperature.
Second, plastic melting
Plastic melting is one of the key steps in injection molding. In the plastic melting stage, the following work needs to be done:
1. Plastic particle feeding: the plastic particles are automatically or manually put into the feed port of the injection molding machine. The operator need mix the colorment or color power with the plastic resin before feeding material into injection machine material barrel, and some plastic resin such as Nylon, ABS, PC ,etc and dry the material in the proper time before feeding mateirla into machine.
2. Heating and melting: The injection molding machine heats the plastic particles to the melting temperature through the heating system, and melts the plastic particles into a molten state through the rotation of the screw.
At this stage, need check the materila data to adjust the proper heating tempreture.
3. Plastic temperature control: Through the temperature control system of injection molding machine, precise temperature control of molten plastic is carried out to meet the requirements of the product.
Third, injection molding
Injection molding is one of the core steps of injection molding. In the injection molding stage, the following work needs to be done:
1. Mold closure: The injection molding machine closes the mold through the hydraulic system to ensure the tightness and stability of the mold. At this stage , technician need to be familiar with the mold structure, for the complex mold structure, should inspect carefully before the mold closing.
2. Plastic injection: The injection molding machine rotates through the screw to inject the molten plastic into the chamber of the mold.
3. Pressure maintenance: After the injection molding is completed, maintain the pressure of the injection molding machine to ensure that the product is fully filled with the mold chamber.
4. Cooling curing: After the injection molding is completed, the plastic in the mold is cooled and cured through the cooling system to form the required product shape. To ensure the the parts quality , keep the cooling time as short as possible, which make the plastic injection molding service competitve price.
Fourth, product stripping
Product demoulding is one of the last key steps in injection molding. In the product demoulding stage, the following work needs to be carried out:
1. Mold opening: The injection molding machine opens the mold through the hydraulic system, making the product out of the mold.
2. Product demoulding: The product is removed from the mold by the manipulator or other auxiliary equipment of the injection molding machine. The larage volumm product usually use the manipulator, so in the mold development phase, need consider the mold design for the part pick up way.
3. Check and finish: check and finish the appearance of the product to ensure the quality and integrity of the product. It is important that it need to check the first 10shots of the begining production, and normally first 10 shots can't be used once the machine stop each time. Because once the machine stop, the plastic raw material resin still in the injection machien screw and the material will be easy broken because of the long time high tempreture.
5. Other process steps
In addition to the above key steps, injection molding may also require a number of other process steps to meet specific product requirements. For example, some products may require subsequent spraying, screen printing, assembly and other processes to achieve special appearance and functional requirements.
Conclusion:
The process flow of injection molding includes key steps such as mold preparation, plastic melting, injection molding, cooling curing and product demoulding. At each step, precise operation and control are required to ensure the quality and production efficiency of the product. As a common plastic processing method, injection molding has the advantages of low cost, high production efficiency and stable product quality, and is widely used in various industries. Therefore, it is of great significance and value to understand and master the process flow of injection molding and its key steps. Through reasonable operation and control, the efficiency and quality of injection molding can be improved to meet the needs of plastic products manufacturing in different industries.
The qualify plastic injection molding technician play am important role in the plastic manufacturing process, save the time and material in the injection molding production parameter adjusting .
If you need injection service for your innovative product, pls feel free to contact us.
plastic injection molding guideline
Injection molding is a commonly used plastic processing method, which is widely used in various industries. It works by injecting molten plastic into a mold so that it forms the desired product shape after cooling. The process flow of injection molding includes key steps such as mold preparation, plastic melting, injection molding, cooling curing and product demoulding. This article will introduce the process flow of injection molding and its key steps to help readers better understand and apply this processing technology.
First, mold preparation
Mold preparation is the first step in injection molding. In the mold preparation stage, the following work needs to be done:
1. Mold inspection: Check the integrity, wear and damage of the mold to ensure that the mold can be used normally. Expecially the the mold cavity is Polish, in the wet area, usually the mold cavity is easy to rust, so need check the mold surface to make sure the mold is in good condition.
2. Mold installation: the mold is installed on the injection molding machine, and adjusted and fixed to ensure the stability and accuracy of the mold. Connect the water pipe, If the mold is hot runner, also need connect the hot runner tempreture controller, if the mold need cold water cooling, need connect the cold water generating maching.
3. Mold preheating: For some special requirements of the mold, it is necessary to preheat to reach the required temperature.
Second, plastic melting
Plastic melting is one of the key steps in injection molding. In the plastic melting stage, the following work needs to be done:
1. Plastic particle feeding: the plastic particles are automatically or manually put into the feed port of the injection molding machine. The operator need mix the colorment or color power with the plastic resin before feeding material into injection machine material barrel, and some plastic resin such as Nylon, ABS, PC ,etc and dry the material in the proper time before feeding mateirla into machine.
2. Heating and melting: The injection molding machine heats the plastic particles to the melting temperature through the heating system, and melts the plastic particles into a molten state through the rotation of the screw.
At this stage, need check the materila data to adjust the proper heating tempreture.
3. Plastic temperature control: Through the temperature control system of injection molding machine, precise temperature control of molten plastic is carried out to meet the requirements of the product.
Third, injection molding
Injection molding is one of the core steps of injection molding. In the injection molding stage, the following work needs to be done:
1. Mold closure: The injection molding machine closes the mold through the hydraulic system to ensure the tightness and stability of the mold. At this stage , technician need to be familiar with the mold structure, for the complex mold structure, should inspect carefully before the mold closing.
2. Plastic injection: The injection molding machine rotates through the screw to inject the molten plastic into the chamber of the mold.
3. Pressure maintenance: After the injection molding is completed, maintain the pressure of the injection molding machine to ensure that the product is fully filled with the mold chamber.
4. Cooling curing: After the injection molding is completed, the plastic in the mold is cooled and cured through the cooling system to form the required product shape. To ensure the the parts quality , keep the cooling time as short as possible, which make the plastic injection molding service competitve price.
Fourth, product stripping
Product demoulding is one of the last key steps in injection molding. In the product demoulding stage, the following work needs to be carried out:
1. Mold opening: The injection molding machine opens the mold through the hydraulic system, making the product out of the mold.
2. Product demoulding: The product is removed from the mold by the manipulator or other auxiliary equipment of the injection molding machine. The larage volumm product usually use the manipulator, so in the mold development phase, need consider the mold design for the part pick up way.
3. Check and finish: check and finish the appearance of the product to ensure the quality and integrity of the product. It is important that it need to check the first 10shots of the begining production, and normally first 10 shots can't be used once the machine stop each time. Because once the machine stop, the plastic raw material resin still in the injection machien screw and the material will be easy broken because of the long time high tempreture.
5. Other process steps
In addition to the above key steps, injection molding may also require a number of other process steps to meet specific product requirements. For example, some products may require subsequent spraying, screen printing, assembly and other processes to achieve special appearance and functional requirements.
Conclusion:
The process flow of injection molding includes key steps such as mold preparation, plastic melting, injection molding, cooling curing and product demoulding. At each step, precise operation and control are required to ensure the quality and production efficiency of the product. As a common plastic processing method, injection molding has the advantages of low cost, high production efficiency and stable product quality, and is widely used in various industries. Therefore, it is of great significance and value to understand and master the process flow of injection molding and its key steps. Through reasonable operation and control, the efficiency and quality of injection molding can be improved to meet the needs of plastic products manufacturing in different industries.
The qualify plastic injection molding technician play am important role in the plastic manufacturing process, save the time and material in the injection molding production parameter adjusting .
If you need injection service for your innovative product, pls feel free to contact us.
