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US 6,186,436 B1Granted
Bag winder and method thereof
AssigneeCMD Corporation
InventorsPaul Selle, Kenneth Radtke, Francis Binder
Life of this patent
Estimating the term…
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AssigneeCMD Corporation
InventorsPaul Selle, Kenneth Radtke, Francis Binder
Estimating the term…
A method and apparatus for winding film includes haul-in rolls, a spindle, an airhorn, a kick-roll, and a belt or ropes to convey the film. A source of air creates an air curtain downstream of the spindle. The air curtain directs the leading edge of the film into the airhorn and over the spindle. A film guide located upstream of the airhorn guides a leading edge of the film back into its own nip. An air guide located between the film guide and the conveyor leading to the spindle prevents air from going back upstream of the airhorn. The guides are comprised of a non-stick material. Holes near the edge of guide allow air to exit the air horn, without perturbing the film where it tucks into its own nip. A static pinner may pin the leading edge of the film to the spindle. The spindle may have a winding surface tapered by less 0.03 inches per foot. The spindle has an air inlet, and outlet holes. The inlet area is greater than the hole area, by up to a 7:1 ratio. The spindle surface may have a non-stick surface, or have a liquid lubricant applied thereto. A yoke may be used to remove rolls, and the yoke contacts the spindle in substantially 360 degrees, or a push-off palm may be used to remove the roll and contacts the spindle in two places.
An apparatus for winding film from a pair of haul-in rolls comprising:
The apparatus of 1 further comprising a mounting block disposed downstream of the airhorn, and above the conveyor, and a source of air mounted on the mounting block, disposed to create air flow between the conveyor and the block and from the source of air to the air horn to create an air curtain downstream of the spindle, such that air directs the leading edge of the film into the airhorn and over the spindle.
An apparatus for winding film from a pair of haul in rolls comprising:
The apparatus of 20 further comprising a mounting block disposed downstream of the airhorn, and above the conveyor, and a source of air mounted on the mounting block, disposed to create air flow between the conveyor and the block and from the source of air to the air horn to create an air curtain downstream of the spindle, such that air directs the leading edge of the film into the airhorn and over the spindle.
A method of winding film comprising:
An apparatus for winding film from a pair of hail-in rolls comprising:
The apparatus of 34 further comprising a mounting block disposed downstream of the airhorn, and above the conveyor, and a source of air mounted on the mounting block, disposed to create air flow between the conveyor and the block and from the source of air to the air horn to create an air curtain downstream of the spindle, such that air directs the leading edge of the film into the airhorn and over the spindle.
An apparatus for winding film from a pair of haul-in rolls comprising:
Dependencies are inferred from the claim text.