| 摘要 |
The apparatus comprises one or more die groups (10) which are free, mobile and movable independently of one another, each of which comprises: a female part (12) having a matrix cavity (M) and a male part (13) destined to penetrate into the matrix cavity (M) such as to define a forming chamber (F) of the product, the matrix cavity (M) of the female part being destined to contain a batch of material. The apparatus further comprises at least a heating station (30) having at least a heating means destined to heat the die group (10) up to bringing the plastic material contained therein to the fluid state, and at least a cooling station (35) destined to cool the die group (10) located downstream of the heating station, wherein the die groups (10) are mobile and free to be cyclically inserted in the heating station and subsequently transferred therefrom to the cooling station. The invention comprises thrust groups, each of which is associated to a respective die group (10) and is destined to provide a thrust for penetrating the male part (13) into the matrix cavity (M) during the stage of forming the product, the thrust group being mobile solidly with the respective die-group (10) in displacements thereof during the operations performed in the heating and cooling stations and during transfer from a station to another. The invention enables economically advantageous realisation of products having a uniform and compact mass, even with relatively large dimensions (masses of above 1 kg). Further, thanks to the relatively small mass, relatively very light die groups can be realised which are therefore easily movable and manipulatable in a mechanised way. Further, the necessary equipment can be relatively inexpensive. |
