Tag - Plastic Injection Molding

How to Identify The Quality of Injection Parts

From three points, we can see the quality of injection parts.

First, look at the appearance
 

Seewhetherthe injection parts are complete and whether they are deformed or not;

 

Whether the injection parts are uniform in color, whether there is obvious color difference, and whether the color is bright and translucent.

 
Second, touch the product
 

Touch the the surface of the injection part to see whether smooth, and whether there are burrs around the handle;

 

Whether theinjection parts have been naturally aged, the aging is reflected in […]

Four Key Points Affecting the Quality of Injection Mold

1) plastic materials
 
The complexity of plastic material properties determines the complexity of injection moulding process. The performance of plastic materials varies greatly with varieties, brands, manufacturers and even batches. Different performance parameters may lead to completely different forming results.
 
2) injection temperature
 
The melt flows into the cooling cavity and loses heat due to heat conduction. At the same time, the heat generated by shearing may be more or less than the heat dissipated by heat conduction, mainly depending on the […]

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 […]

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 […]

Role of Slider in Process of Injection Molding

In the process of injection molding, processing holes play different roles on different sliders. In the front part of the product, the clamping line between the slider and the cavity is on the parting line, and the product is formed by the big slider around the product. Four clamping lines are formed at the interface between the sliders on the appearance surface of the product.

In order to ensure the smooth line between some sliders and the cavity and between the […]

What Industries Are Widely Used In Mold?

Mold used in industrial production for injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods to get the required products. In short, a mold is a tool used to make molding objects. This tool consists of various parts. Different molds are made of different parts. It is known as the “mother of industry” by changing the physical state of the molding material to achieve the processing of the shape of the object.

 
With the […]

How to View the Development of Domestic Mold Industry?

The rapid development of equipment manufacturing industry, especially the rapid growth of automotive and electronic products, has created a good market environment for the development of mold industry. Although the statistical data have not yet come out, but according to the analysis of the development situation of the two booming production and demand, the development speed of the mold industry is higher than last year. But there are also worries in the gratifying development.
 
One is the lack of mold […]

Why Injection Mold Need to Be Tested?

Most of the defects of injection molded parts are caused by the plasticization and injection stage of injection molded parts, but sometimes unreasonable design. The influencing factors include the type of injection inlet, the number of mold cavities, position and size, the design of cold/hot runner system and the structure of the product itself. Therefore, in order to avoid the product defects caused by mold design, we need to analyze the injection mold during the production.
mold making
After getting the […]

How to Adjust Injection Molding Process Parameters

The measurement and control of temperature is very important in injection molding. Although these measurements are relatively simple, most injection moulding machines do not have sufficient temperature pick-up points or circuits. In most injection molding machines, the temperature is induced by thermocouples. A thermocouple is basically made up of two ends of different wires. If one end is hot than the other, it will produce a tiny telegram; the more heated it is, the stronger the signal.
 
Temperature control
 
Thermocouples are […]

Common Problems in Transparent Plastic Injection Molding Process

Transparent plastics, because of their high transmittance, are bound to require strict surface quality of plastic products, and can not have any defects such as markings, pores, whitening, fog halo, black spots, discoloration, poor gloss, etc. Therefore, in the entire injection molding process, the design of raw materials, equipment, molds, and even products should be paid great attention to and put forward strict. To special requirements. Secondly, transparent plastics are mostly of high melting point and poor fluidity, so […]