What are injection molds and how are they made?

Injection molds are tools used to produce various types of plastic parts. As the name suggests, in this technique, plasticized material is injected into a mold that gives the material a given shape when solidified. We distinguish cold-channel and hot-channel forms. In our post, we will take a closer look at their characteristics and talk about how they are created.

Cold-channel and hot-channel injection molds. Characteristics

The basic function of the injection mold is to allow the molding socket to be filled with liquid plastic and the forming of the product that reflects the shape of the socket. The form, which also includes a cooling system in addition to the sockets, dissipates heat from hot, liquid plastic. After the material solidification, we remove the so-called moldings from the form. Due to the temperature of the channel with which liquid material is supplied, injection molds are divided into cold-channel and hot-channel. The latter are more advanced and use injected plastics more economically.

Production of precision injection molds thanks to accurate CNC erosion treatment

Injection molds consist of several different functional systems, already mentioned sockets, filler systems, cooling, molding pushing, guide and fixing elements for mold halves, drives and housings. Of course, the sockets must be particularly precise. In the production process of injection molds, CNC erosion machining is used, very accurate erosion treatment of steel, also used in the production of instruments for stamping presses. Details of injection molds are created on the basis of carefully developed projects in 2D and 3D versions, currently made as standard using CAD software. For our part, we would like to point out that our mechanical plant offers services in unit and serial production. We can undertake to make elements that will then be subjected to preliminary tests. If the project needs to be refined after testing, we will create changed parts based on a new pattern.