초록 ▼

A packaging machine and method of packaging utilizing chains of interconnected preopened bags which are fed sequentially and one at a time to a load station. Bag tops are clamped against spreading horns by sensor equipped clamps which cause disablement of a bag filling mechanism unless a bag is prop

A packaging machine and method of packaging utilizing chains of interconnected preopened bags which are fed sequentially and one at a time to a load station. Bag tops are clamped against spreading horns by sensor equipped clamps which cause disablement of a bag filling mechanism unless a bag is properly located at the load station. A bag spreading and transfer mechanism spreads a loaded bag and transfers it to a bag closure station for sealing. The mechanism includes bag-supporting structures for supporting the bag during loading transfer and sealing and for expelling a completed package from the machine.

대표청구항 ▼

In a bagging machine a bag spreading assembly comprising: a) a spaced pair of horns movably mounted for opposed motion, each horn including a lower bag engaging porion; b) horn manipulation means for moving the horns from bag disengaged positions to bag mouth engagement and spreading positions; c) a

In a bagging machine a bag spreading assembly comprising: a) a spaced pair of horns movably mounted for opposed motion, each horn including a lower bag engaging porion; b) horn manipulation means for moving the horns from bag disengaged positions to bag mouth engagement and spreading positions; c) a pair of bag spreader subassemblies each including a moveable bag engaging finger; d) each of the horns including a finger receiving recess in its bag engaging portion; and, e) each spreader subassembly including a finger manipulation means connected to the finger of the same assembly for: i) moving the connected finger from a rest position into an associated one of the horn recesses when the horns are in their bag spreading positions; ii) spreading the fingers once in the recesses to engage a bag as it is engaged by the horns; iii) further spreading the fingers to substantially close an engaged bag as the horns are moved from their bag spreading positions to the disengagement positions; and, iv) continuing to engage the bag until a bag fastener has at least commenced to fasten the bag in a closed condition.