Preventing the Position Shift of Left-Right Asymmetric Cavities

When the placement of the cavity is left-right asymmetric with respect to the sprue (see the example in Fig. 1), depending on the shape of the cavity, at the time of filling the molten plastic it is possible that a shift occurs in the relative positions of the cavity block and the core block, thereby causing changes in the dimensions of the molded product, or generation of burrs.

In order to prevent such problems, as is shown in Fig. 2, by placing a taper block set in a direction opposite to that of the cavity carving it is possible to prevent the position shifts.

In the case of a single cavity mold or a test mold, a situation such as that shown in the example of Fig. 1 can occur. In such a situation, instead of concentrating completely on the preparation of the shape of the molded product, try to look at the overall structure of the mold from a different perspective from a distance, and remember the hints given here.
One can achieve a balanced design if one is not paying attention only to some parts but has the flexibility to view the whole