Patent ID: 7156643

Claim:
A machine for forming caps by compression molding comprising: a first carousel rotating about a central axis and provided peripherally with a plurality of compression molding units mounted equidistant from each other and from the axis of rotation, said units comprising an upper punch and a lower die provided with a cavity, said punch and die being mutually movable along a common vertical axis in response to suitable operating device: an extruder feeding apparatus which feeds charge material to a second carousel; the second carousel rotating about a central axis parallel to that of the first carousel and having peripheral feeding and collection apparatus which respectively feeds the charge of material to be molded to a molding unit of the first carousel, and collects molded caps released from said punch of a molding unit of the first carousel; said molding units and said feeding and collection apparatus respectively located on the circumference of the first carousel and the circumference of the second carousel so as to be mutually tangential at one point; wherein at least one additional second carousel is provided to form a system having the at least two second carousels distributed angularly equidistant external to the first carousel, wherein a diameter and rotational speed of the first carousel relative to that of the two second carousels is set so that each molding unit implements at least two forming cycles for each revolution of the first carousel.