The foaming molding mould

The another important factor of affecting foaming molding model quality is mould’s design and making. The reasonable choice of mould material and best design of mould structure can not only improve the model quality, but also reduce the mould making cost.

(1) The foaming mould kinds

  The steam cylinder mould

1—upper cover plate 2—outside frame

3—fastening bolt   4—lower plate（it includes the mold core）.

The structure changes with the model. Because the steam cylinder mould belongs to manual operation, the production period is long; the efficiency is low; labor strength is large. It is only suitable for small-lot production of foam plastic model.

 The foaming mould in the compressor’s air chamber

1—mold core  2—upper cover plate   3—mold frame   4—material feeding entrance   5—lower plate

This mould is also called compressor’s air chamber mould. It generally adopts up-and-down or left-and-right opening model structure type. The mould core and mould frame are fixed in the above and low air chambers respectively. We set the material feeding entrance in the mould frame’s proper position to make pre-foaming beads fill the mould cavity fully and successfully. Both upper and lower air chambers have air inlet  entrance and air outlet entrance.