Pocket Insert

A pocket insert is a critical component of bottle positioning starwheels used in bottling lines. It is designed to securely hold individual bottles in precise positions as they rotate through various stations, including filling, capping, and labeling. These inserts ensure consistent bottle orientation and spacing, preventing misalignment, tipping, or jamming during high-speed production. They are typically replaceable parts that allow for maintenance and adaptation to different bottle shapes and sizes without replacing the entire starwheel.

The pocket insert operates by fitting into machined pockets on a rotating starwheel. As bottles enter the starwheel from an infeed conveyor, each insert cradles a single bottle, maintaining its position through centrifugal and gravitational forces. The insert's contour matches the bottle's profile to prevent movement, while smooth surfaces minimize friction. During rotation, the insert transfers the bottle between stations with precise timing, ensuring alignment with downstream equipment like fillers and cappers before releasing it onto an outfeed conveyor.