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Plastic 3D printing and injection molding

2021-07-06

Plastic 3D printing and injection molding


3D printing technology is not a novel technology, it belongs to the idea of last century, the technology of the last century, but it belongs to the market in this century.

As early as the 1980s, the 3D printing technology concept has been proposed by foreign scientists and is recognized by people, and in the mid-1990s, it officially entered people's lives. This is a rapidly molded technology, which is based on a digital model file. It is used to construct a technique of creating a bonded material such as powder metal / plastic.

Plastic injection molding refers to a plastic material that is completely melted by a screw by a screw, incorporating a cavity with a high pressure, and is cured, and a method of molding is obtained. The process begins in the 1920s, has had nearly a hundred years of development history, which is currently using very wide and very mature industrial manufacturing technology.

In the plastic manufacturing industry, 3D printing and injection molding are often taken PK, and the speech of 3D printing is the end of injection molding is also. For the manufacturer, the competitiveness of the two is one of the topics they are most concerned about.

So, what is the difference between 3D printing technology and injection molding?

1, production mode

Injection molding processes, as long as there is injection mold, it can produce low-cost, large-scale production, and therefore, for traditional massive, large-scale manufacturing, current injection molding is still the best choice.

The 3D printer does not require traditional tools, fixtures, machines or any molds, and directly convert any shape of the computer directly, quickly, directly, and compare the three-dimensional design in the computer into a physical model, thanks to the 3D printer The characteristics of the traditional injection molding process, the more complex and non-solid objects, the faster processing speed, the more raw materials cost, so it is good at personalized and diversified products.

 

2, manufacturing cost

Due to the wide range of raw materials of injection molding, its large-scale, rapidly standardized production, which is also conducive to reducing a single product cost, and therefore, from manufacturing cost, the injection molding is much lower than 3D printing technology.

However, for industrial manufacturing, 3D printing truly cost-saving links is to modify the prototype link, and modify the prototype only to modify the CAD model without any manufacturing cost.

In the injection molding, if the prototype is a steel mold, the modified cost will be relatively low, but if the aluminum alloy model tool is used, the cost is much higher. This is also a major business or individual that is currently engaged in mold design, which will choose the three-dimensional 3D printer for mold design printing.

 

3, application field

At present, the injection molding process can realize items consistent with the shape of a mass manufacturing, so it is very suitable for large quantities of standardized product manufacturing.

3D printing simply inputs a three-dimensional image by controlling the terminal, it can print the raw material into a real model, even directly manufacturing parts or molds, thereby effectively shortening the product development cycle. 3D printers produced by three-dimensional production have been widely used in the fields of Chuangke, architectural design, mold model model.