| 摘要 |
A machine for automatically simultaneously producing a predetermined number of filled and sealed finished packages. Pneumatically driven adjustable indexing drive means (46) drive a main shaft member; to which sprocket means are mounted. The sprocket means engage and are adapted intermittently to advance and rest a pair of web transporting roller chains (26) in response to movement of the main shaft, the web transporting roller chains (26) including a series of upstanding pin members (40). Rotary impaler cylinder means (27) driven by said roller chains, impale each of the opposed lateral edges of a bottom thermoformable web onto said roller chain pin members. Means intermittently index said bottom web material to a heating station (22) for heating said web to thermoformability and subsequently to a forming station (25), including retractable forming die means (39) for forming a series of cup-like pockets in the bottom web. Means intermittently index the formed bottom web to a filler station (29), and driven roller means advance a thermoformable top web material (44) in timed sequence with the intermittent advance, forming a filling of said bottom web member (21), into substantially parallel closely adjacent proximity to the bottom web after the cup-like pockets formed therein are filled. Both the bottom web and the top web are together intermittently indexed to a sealing station (45), where retractable heat sealing die and clamping means heat seal the top and bottom webs together. The sealed top and bottom web members are intermittently indexed to a punch station (38), where a series of punch dies punch rounded openings in the sealed web members at the location of the corners of the individual packages to be formed. Means intermittently index and pull said sealed top and bottom web members to a longitudinal cutting station wherein knife means (34) slit the top and bottom web members (21,44) along first opposed sides of the cup-like pockets and adjacent the pin engaging edge portions of the bottom web and then transverse cutting means (37) slit the top and bottom web members along second opposed sides of said cup-like pockets thereby to separate the individual finished packages from one another. The finished packages are transported away from the machine and take up roller means (62) remove the bottom web trim from the roller chain pins (40). |
