| 摘要 |
The invention concerns an assembly comprising units for molding polymer materials, said units being arranged successively in a mobile line, each of said molding units including a mold, said mold including two parts mutually mobile about a pivot pin (60), the movement of said two parts (30a, 30b) relative to each other being produced upon opening and closing of the mold. The invention is characterized in that the assembly comprises rollers (40) co-operating with a track (50), each of said rollers (40) being connected by link rods (90) to the two pivot pins (60) of adjacent molding units, the path described by the rollers (40) against the track (50) and the path described by the pivot pins (60) being urged to be brought closer together on a predetermined travel of the molding units, such that the distance between the pivot pins (60) of the adjacent molding units is increased during said travel. |
