| 摘要 |
The invention relates to a stretch rod for the form-and-fill head of a machine for forming and filling containers produced from preforms. The object of the invention is to provide a stretch rod of this type which can be cleaned and/or sterilized without being disassembled or without any other intervention. According to the invention, the object is achieved by a stretch rod (5) for the form-and-fill head (3) of a machine for forming and filling containers produced from preforms (2), which rod comprises a drive unit for axially moving said stretch rod (5). At least the part (6) of the drive unit which is connected to the stretch rod (5) is arranged in a drive chamber (11) that is sealed off from the regions of the form-and-fill head (3) that come into contact with the contents. The stretch rod according to the invention is characterized in that the sealing action is achieved by a seal (12) which surrounds the stretch rod (5). |
