Figure 2.2 Parts for an open/close mould

In Figure 2.3, the additional sleeves in the container and the stepped bores in the  cover are shown. The demoulding direction remains the same.

The upper part (fixed half) and the lower part (moving half) are made up of several  plates and risers. Via the integrated guides, that is, bolts in the fixed half and the  bushes in the moving half, the mould closes precisely. The fixed half consists of the clamping plate and the cavity plate. The guide bolts  are installed in the cavity plate. The guide bolts are provided at the back end with  a collar, which is embedded in the cavity plate. Against the slip out of the guide  bolts the clamping plate is screwed tightly with the cavity plate. The cavity plate is  fixed to the mould plate via another fitting diameter at the guide bolt. The moving half of a classic open/close mould is made up of the mould plate,  possibly a backing plate, the risers and the lower cavity plate. The ejector set is  between the risers. The guide bushes are also provided with a collar here and  mounted in the cavity plate. They are secured in the moving half through the  risers, which are attached, like the fixed half, via the back fitting diameter of the  guide bush. The risers are again installed with the clamping plate and with the  additional guide sleeves. Everything is screwed tightly together with long screws  from the clamping plate through to the mould plate. This guarantees that all components are aligned and tightly connected. Ejectors are the moving parts in the  injection mould that eject or expel the plastic part after opening the mould. Ejectors are usually round pins which are installed in the ejector set. The small rings  mentioned at the beginning which are usually visible on the plastic part are the  imprints of these ejectors. In Figure 2.4 several longitudinal and cross sections through an injection mould  are represented so that the classic structure of an open/close mould can be seen.