Plastic Injection Mould

11 Dec

What Industries Are Molds Widely Used In

Mold, industrial production used for injection, blow molding, extrusion, die casting or forging, forming, smelting, stamping and other methods to obtain the required products of various molds and tools. In short, the mold is a tool used to make molding objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molding material. It is known […]

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10 Dec

Brief Analysis of Performance Requirements of Steel for Plastic Injection Mould

According to the forming method, plastics can be divided into thermoplastics and thermosetting plastics. Thermosetting plastics, such as bakelite powder, are permanently formed by pressing under heating and pressure. Bakelite moulds are periodically subjected to pressure and continuously heated at 150-200 degrees. Thermoplastics, such as polyvinyl chloride, are usually formed by injection moulding. Plastics are heated in a separate heating chamber and then injected into colder moulding chambers in a softening state to exert pressure, thus bringing about cold […]

06 Dec

Cautions In Using Release Agent

In the plastic mold manufacturing industry, in order to facilitate demolding, improve efficiency, prolong the life of plastic molds, make the surface of products smooth, qualified size and reduce waste products, demoulding agents are usually needed. The release agent can be roughly divided into internal release agent and external release agent.

The internal release agent is a kind of material added into the molding material. During the vulcanization process, it migrates to the surface of the product, thus playing a […]

29 Nov

Six Systems of Plastic Mould

The functional structure of plastic mould system is mainly composed of six systems: pouring system, temperature regulating system, forming parts system, exhaust system, guiding system and ejection system. The pouring system and forming parts are the parts directly contacted with plastics, and change with plastics and products. They are the most complex and most changeable parts in plastic mould. It is required to process the parts with the highest smoothness and accuracy.

Gating system:

The pouring system refers to the runner […]

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23 Nov

Difference Between Soft Mold and Hard Mold

Soft mold refers to the mold made of steel such as NAK80, which can be machined directly without heat treatment, and can be put into use directly after processing. This material is generally pre-hardened when used. Hard mold refers to the mold core material is annealed before mechanical processing, and then heat treatment after mechanical processing, generally hot. After treatment, electrical processing and remanufacturing are also needed.
The service life of hard mold is much longer than that of soft mold.
Soft mold is a simple mold made […]

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15 Nov

Structural Factors to be Considered in Plastic Injection Mold Design

Parting surface, that is, the contact surface between the die and the punch when the die is closed. The selection of its position and form is influenced by the shape and appearance of the product, wall thickness, forming method, post-processing technology, die type and structure, demoulding method and the structure of the forming machine.

2, structural parts, namely, complex mold slide, oblique top, straight top block. The design of structural parts is very critical, which relates to the life of […]

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29 Sep

Effect of Five Systems of Injection Molding Machine

Injection system

Injection system is one of the main components of injection molding machine, generally there are three main methods: plunger, screw, screw pre-plastic plunger injection. Now widely used is screw type. The effect is that in a cycle of the injection machine, a certain amount of plastic can be heated and plasticized within a specified time, and the molten plastic can be injected into the mold cavity through a screw under a certain pressure and speed. After the injection, […]

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04 Sep

How to Distinguish Mold Grades? Take A Look at The Five Major American Mold Standards

The price of the export mold will be more expensive, but it is expensive because the standard is different. The American Plastics Industry Association (SPIAN-102-78) divides the molds into five categories. Each of these five types of molds has its own requirements, and this classification of molds can only be applied to molds with 400 tons or less of injection molding machines.
mold making
101 type

The cycle can be up to 1 million times for high production. The best mold material is […]

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03 Sep

What Are The Main Reasons Affect Mold Failure?

Failure often occurs in the use of molds, from the actual point of view, we focus on several failure modes. There are five main types:

Failure of plastic deformation

The main reason is that the strength level of the mold material is not high; or the heat treatment process is not correct, not to achieve the best strength and toughness of steel; improper use of the die causes local overload; for hot-working mold softening at high temperature will also lead to mold thermoplastic deformation […]

01 Sep

Injection Molding Design – Summary of Requirements on Mold Design Process

The mold design is different from product design, because it is a process design itself. The basic requirements for mold design are:

The mold shall be able to complete the process of parts processing.

The equipment on which the mold is used shall be specified; and the technical parameters of the equipment shall be complied with.

The parts molded during the validity period of the mold shall have the dimension tolerance within the allowed range of parts drawings.

For prototype mold, the mold […]

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