Machine for erecting lined containers

Claim 1

In a machine for erecting lined containers from a pair of tubular container forms, the combination comprising: A. a first and a second magazine arranged in a side-by-side relationship including means for simultaneously advancing in a common direction and delivering in an on-edge disposition a first and a second prescored flattened form to be erected into a horizontally oriented tubular configuration having orthogonally related side panels; B. a container assembly station spaced from said magazine including means for receiving erected forms in coaxial relation; C. a first form extracting and transport means for extracting said first form from said first magazine and for erecting said first form into a tubular configuration as it is extracted from said first magazine, and for thereafter transporting the erected form along a first path to the container assembly station including, 1. a first head having a first array of pneumatic suction cups positionable in a vertical plane for engaging and affixing the first head to a vertically disposed panel of said first form advanced by said first magazine of said pair of magazines, 2. means for moving said head through 90* of arcuate motion while affixed to said panel for thereby positioning the head in a horizontal plane, whereby said first form is extracted from said first magazine and said panel is reoriented to a horizontal disposition, 3. means including an arcuate surface for engaging said first form as the first head is advanced through 90* of arcuate motion for initiating erection of said first form into a horizontally oriented tubular configuration, and 4. means for linearly advancing said first head along a first linear path to said container assembly station while the first head is affixed to said panel; D. means including a pivotally supported squaring arm for engaging said first form at said assembly station for imparting thereto a squared condition; and E. a second form extracting and transport means for extracting said second form from said second magazine, for erecting said second form into a tubular configuration as it is extracted from said magazine, and for thereafter transporting the erected form to the assembly station along a second path paralleling said first path including, 1. a second head supporting a second array of suction cups in a vertical plane for engaging and affixing the second head to a vertically disposed panel of said second form advanced by said second magazine of said pair of magazines, 2. means for imparting linear motion to said second head while it is affixed to said vertically disposed panel of said second form for thereby extracting said second form from said second magazine, and 3. means including an arcuate surface for initiating erection of the second form into a horizontally disposed tubular configuration as it is extracted from said second magazine.