Internal undercut mold design - internal sliders and lifters

Mould Precision Co., Ltd. has strong engineering in internal undercut mold design and manufacturing.

There are lots of parts which has internal undercut, specialized for phone frame. Here is one case for reference how do make mold design for mold release.

1. Part structure

internal undercutinternal undercut

2. Mold structure

internal undercut

internal undercut

The green colors are internal sliders, and there are internal undercut in four corners. The blue color is internal lifters.

internal undercut

3. Mold open

1st, the internal sliders move out.

internal undercut

Part is injected by lifters at last.

internal undercut

It is very simple part, but it is good for reference. All complex comes from simple.