Plastic parts Injection Molding Parts - Manufacturing Process

 

Plastic injection molding refers to a business where the client provides drawings or physical samples, and the injection molding factory manufactures the injection molded products according to the client's requirements, charging mold fees and processing fees. Injection molding is a knowledge-intensive, highly technical, and practical industry. It requires not only a professional production team but also adequate hardware facilities such as production equipment. Compared to other industries, it places higher demands on management personnel at all levels in the injection molding workshop. This article will discuss the manufacturing process of a plastic injection molding factory.

 

I. Mold Development

Plastic injection molding factories calculate the number of cavities in the mold based on the drawings or physical size and structure provided by the client. A good mold design aims to meet the customer's requirements while minimizing processing costs, difficulty, and time.

 

To achieve this, it is necessary not only to understand the customer's requirements but also to have a thorough understanding of injection molding machines, mold structures, processing techniques, and the mold factory's own processing capabilities. Therefore, to improve mold design skills, the following points should be considered:

 

1. Understand every detail in each mold design and the purpose of each component within the mold.

 

2. When designing, refer to previous similar designs and understand their mold processing and product manufacturing processes, learning from their experiences and lessons.

 

3. Understand the working process of injection molding machines to deepen the relationship between molds and injection molding machines.

 

4. Visit factories to understand the processing technology of finished products and recognize the characteristics and limitations of each processing method.

 

5. Understand the trial molding results and mold modification situation of your designed molds, and learn from the lessons.

 

6. Try to use previously successful mold structures in the design process.

 

7. Understand the impact of water immersion on the product.

 

8. Study some special mold structures and understand advanced mold technology.

 

II. Mold Trial Molding A mold, from design to assembly, only completes 70% to 80% of its entire manufacturing process. Errors caused by discrepancies between expected and actual shrinkage, the smoothness of demolding, the cooling effect, and especially the impact of the gate size, location, and shape on the precision and appearance of the product, must be verified through mold trial molding. Therefore, mold trial molding is an indispensable step in verifying the mold's quality and selecting the molding process.

 

III. Mass Production After confirming the samples with the customer, mass production can begin. This is where the supply capacity of the plastic mold manufacturer is tested. If you have large orders and specific quality requirements, it is recommended not to use small plastic processing plants, as insufficient manpower will affect delivery time.

 

HUIWEN Plastics is a group enterprise specializing in precision mold design and manufacturing, as well as precision injection molded products. The company focuses on providing reputable brands with integrated solutions from product design, precision mold manufacturing, injection molding and assembly, to after-sales service. Its products are widely used in household appliance casings and accessories, medical device injection molding parts, cosmetic packaging injection molding parts, and other fields.