Take-off apparatus for plastic tubular sheets

DETAILED DESCRIPTION What we claim is: 1.
Take-off equipment for tubular sheets of plastic produced by an extruder with a stationary blowing head and wherein a collapsing device collapses the tubular sheet and conveying equipment transports the collapsed tubular sheet to wind-up equipment comprising: reversing apparatus disposed between the collapsing device and the conveying equipment, said reversing apparatus including deflection rollers and turning bars; a rotatably supported bridge; turntables on said bridge, said turntables having a common vertical axis and being vertically spaced from one another; said deflection rollers being mounted on said bridge; holding devices holding said turning bars on some of said turntables; frame mounting one of said turntables; each of said turntables having an inner ring and an outer ring; said inner rings being supported on said bridge; and a device mechanism mounted on said bridge and engageable with the outer rings of said turntables to effect relative rotation of said turntables and said frame to thereby swivel said deflection rollers and said turning bars relative to one another about said common axis; wherein said bridge includes horizontal upper and lower bridge legs which support the inner rings of said turntables.
2.
Take-off equipment according to claim 1 wherein said bridge includes a substantially vertical bridge leg, said upper and lower bridge legs extending from said vertical bridge leg, said bridge having one side on which said vertical bridge leg is disposed and an opposite open side from which the collapsed tubular sheet exits from the reversing apparatus.
3.
Take-off equipment according to claim 1 wherein said bridge is rotatable relative to said frame, the inner ring of said one turntable being fixed to said upper bridge leg of said bridge and the outer ring of said one turntable being fixed to said frame.
4.
Take-off equipment according to claim 3 wherein the reversing apparatus includes a side structure which carries said collapsing device and one of said deflection rollers, the inner ring of another of said turntables being fixed to said lower bridge leg of said bridge, the outer ring of said other turntable being fixed to said side structure