Types of plastic injection molds in China

Types of chinese plastic injection molds

plastic injection molds in china

plastic injection molds in china

Plastic injection molds to create objects, injection molding plastic is forced into the mold cavity. They are often used to scale manufacturing operations, creating new products, such as toys, kitchen utensils, caps, mobile phone sets. You can use the injection mold “flash line” extra plastic around the seams discovery projects. There are four main types of commonly used plastic injection molds.

Cold runner mold

Cold runner mold, such kind of injection mold is the most common type. The gates and runner mold used for injection molding plastic in each mold cavity. However, the sprue and runner and some hardened once solidified. Workers then these works and recycling. This may cause the waste problem, which may make their economic use.

Two plate plastic injection molds

Two plate cold runner mold is so named because they are characterized by two plates together. Only a parting surface that must be located in the runner. This is the easiest cold runner mold.

Three plate plastic injection molds

Three plate cold runner mold has three, which means that there is one pair of parting planes. Three of the manifold, the movable plate and floating panels. Contains half of the gate hot runner plate and the runner-up. The injection system comprising half of the movable plate and the geometric shape of the part. The other half of the rotor included in the floating plate and geometry. The system can be located in any of the parting, and anywhere on the surface can be selected through the sheet to provide flexibility.

Hot runner mold

Hot runner mold provides a different way of plastic. As part of the runners, although a plastic syringe and cool the cold runner, the hot runner mold in the mold and stored in the temperature higher than the melting point of the plastic. This means that the gate and runner sclerosis will never have a chance. This also reduces the amount of plastic waste. However, the hot runner injection mold requires more skill and maintenance, and have a higher baseline costs. However, they tend to save materials according to their own.

Chinese Injection mold company working process

Chinese Injection mold production process
Injection mold manufacturing process and production process of other industrial products, are starting from raw materials through various processing into the whole process of the finished product. Many types of mold, its structure, purpose and requirements also vary, but their production processes also have in common, can basically be divided into five main stages: the production of technical preparation stage, the preparation stage of raw materials, parts and components processing stage, assembly and commissioning phase trial identification stage.Injection mold

1. Production of technical preparation phase:

This phase is the basis for the production of molds, injection molds for quality, cost, schedule, and management has a significant impact. Production technology stage work includes: Die overall design, preparation of component design, process technology files, develop, mold and other materials cost estimate of the fixed and fixed working hours.

2. The raw material preparation phase:

This phase should be one of the most important work for the preparation of the mold production. The raw material preparation is one of the most important work, is to prepare a variety of material reserves, because the type of injection mold, structural variety, raw materials required are very different, the blank is necessary according to the desired shape of the mold parts, process dimensions, materials, etc. to prepare , to be in the form of rough castings, forgings and under various forms material.
In addition, to complete a mold production, but also requires a lot of purchased parts and spare parts, such as fasteners, standard parts used in the assembly mold etc; factory can not produce or temporarily produce parts, such as templates, mold base and so on. In short, it is necessary, among other raw materials production molds can be processed in the factory all ready

3. Parts Processing Stage:

This stage is an important stage to ensure the accuracy of the mold, which mainly include: machining, special of surface processing and heat treatment. Machining is the use of cutting tools for metal materials processing. Is known, the mold is assembled from metal parts almost up. To get the parts comply with requirements of the drawings, the use of mechanical processing is its main tool. Therefore, the machining process is the largest.

Followed by special processing, the structure of the mold rather special. Because plastic is a three-dimensional piece, it is shaped by a combination of male and female mold cavity derived. This cavity with a surface that is difficult to deal with the general machining, even if reluctantly working out, their quality is difficult to guarantee. Therefore, you need to use special processing, such as EDM. Electroforming processing. These special processing methods become indispensable processing methods.

The third is the surface finish, the general requirements for plastic surfaces are high, requiring plastic surface gloss, rounded appearance, which requires corresponding cavity surface is very smooth and shinning, are generally due to the cavity surface, with usually difficult to guarantee the quality of machining, which requires specialized mold surface finish, mainly polishing, chemical polishing, ultrasonic polishing, pressing polishing, blasting polishing.

Fourth, heat treatment, injection mold production, all important parts to be heat-treated, and some parts have to deal with many times. Since heat is the primary means to change the properties of the metal material. As the mold is generally a single piece production, production costs a lot of money, people always want to make more use of it some time, so that the mold can require durable, and heat can be in part without changing the shape and size of the change in its internal organization and performance is important to ensure that the intrinsic quality of the parts method.

4. Assembly commissioning phase:

This phase is to assemble the various parts together and debugged. The quality of assembly work, the quality of the mold walked decisive role. Assembly is a highly technical work, even a small mistake can make a little mold not produce qualified products to.” Assembly” is generally divided into the component assembly, parts assembly and final assembly, commissioning assembled, which is to adjust the relative positions of the parts, with the gap and structural tightness and so on. This is the key step is easy to use.

5. Try to identify stage:

This stage is a good debugging mold ,mounted on the injection molding machine for trial, according to the design requirements for the operation, see the mold clamping, mold is flexible and meets the requirements, the quality of the resulting plastic article is qualified, thereby to identify whether the molds qualified. If accreditation, considered as a injection mold to complete this entire process of production