| 摘要 |
An apparatus for manufacturing threaded caps (A) comprises a plurality of compression molding assemblies which are arranged on a rotating carousel and comprise an upper male mold half (1) and a lower female mold half (2). The male mold half (1) comprises a tubular element (34, 34*), a sleeve (57, 57*) guided coaxially to said tubular element (34, 34*) and a punch (13, 13*) guided in the tubular element (34, 34*) and having a helical slot for forming the thread of the cap. The punch (13, 13*) enters the female mold half (2) and produces, together with it, the cap through compression of a dose of plastic material deposited in the female mold half (2). After the spacing of the punch (13, 13*) from the female mold half, the removal of the cap (A) from the punch (13, 13*) occurs by way of a removal device, which comprises a ring gear (64, 64*) associated with the sleeve (57, 57*) and provided with a collar (60, 60*) in sliding contact on the punch (13, 13*), a rod (69, 120) which can slide axially in a seat (74) of the carousel and supports a gear (65, 65*) meshing with the ring gear (64, 64*) and connected to a motor drive mechanism (91-97, 115-116).
|
