Tandem tool
A tandem mold is a specially designed mold for the production of plastic parts using the injection molding process .
In addition to increasing performance, the purpose of the application is to be able to control family parts more precisely and individually into the respective cavities in which the parts are molded.
The output rate on a machine can be significantly increased without having to use a larger machine equipped with a higher clamping force. The component quality can thus be influenced in a targeted manner in a 3-plate mold.
function
The structure is similar to the classic tool. There is the sprue side, the ejector side and the cavities. The tool is a 3-plate tool. There is one cavity on each of the two parting lines. The parting plane is the imaginary area between the negative and positive form. The sprues can be made hot or cold, as desired. The economy is achieved by the fact that the machine dead time (time in which the machine is stationary, i.e. the time in which the plastic part cools down) is also used. The two cavities make it possible for the first cavity to be injected first. While this cools down, the other cavity is filled. The second cavity is now closed by a locking system and the first can open. During this time the second cools down. The process starts all over again.
A normal injection molding machine is required. This only needs to have special tandem software. In addition, a 3-plate mold with two parting lines and two cavities is required.
swell
- FH Bielefeld : Lecture construction with plastics