Method and apparatus for trimming containers

A method for trimming a plastic container having open end and a base, which comprises:

• providing a multi-station assembly for holding a container during trimming, wherein said assembly includes a plurality of spaced stations and wherein said container traverses stations of said multi-station assembly for operating stages;
• moving the container to be trimmed onto said multi-station assembly at a first operating stage;
• moving a knife by a knife actuating arm into engagement with the container to be trimed at a second operation stage;
• trimming said container by said knife at a third operating stage, with said container held stationary during trimming and with the knife moving around the container at the area to be trimmed;
• ejecting the trimmed portion at a fourth operating stage;
• and ejecting the trimmed container at a fifth operating stage;
• wherein the base of the container is supported during its traverse through the multi-station assembly, and the container is also held by a holder beneath the area to be trimmed to hold the container stationary during trimming, including camming, positioning and moving the knife and knife actuating arm by moving a roller on a tapered cam.