Back to results
US 6,267,034 B1Granted
Apparatus for cutting and stacking a multi-form web
AssigneeRDP Marathon Inc.
InventorGlenn Beckwith
Life of this patent
Estimating the term…
Abstract
A high speed rotary cutter assembly for transversely cutting a moving web, comprising a cutting roll and an anvil roll rotating at web speed which are selectively movable toward and away from one another to set the rotary cutter assembly in operative and idle modes, respectively. The invention also extends to a web handling device for forming a continuous multi-form web into a stack, comprising a folder assembly laying successive forms of the web in a superposed relationship on a table to form a stack. A temporary stack support assembly is extended along an arcuate descending path between the folder assembly and the table when the stack is completed for temporarily holding the incoming folded product until the completed stack on the table has been ejected.
Claims8
A rotary cutter assembly for transversely cutting a moving web, said rotary cutter assembly comprising:
- a blade carrier roll;
- an elongated blade mounted on said blade carrier roll, said blade extending along an axis of rotation of said blade carrier roll;
- an anvil roll mounted generally parallel to said blade carrier roll and defining therewith a nip through which the web is advanced;
- means for moving said anvil roll in relation to said blade carrier roll between an operative position and an idle position, whereby in said operative position, said anvil roll is proximate to said blade carrier roll to effect a cut in said web by the action of said elongated blade pressing the web against said anvil roll, and whereby in said idle position, said anvil roll is spaced apart relative to said blade carrier roll, thereby creating a space therebetween;
- an actuator coupled to said anvil roll for selectively moving said anvil roll between said operative and idle positions;
- a drive including a drive train for transmitting a motive power to rotate said rolls at a tangential speed, whereby the tangential speed is correlated to a translational speed of the web through said rotary cutter assembly, said drive maintaining a driving relationship with said anvil roll and with said blade carrier roll during movement of said anvil roll between said operative and idle positions;
- said drive further including first and second gears mounted concentrically to said blade carrier roll and to said anvil roll respectively, said first and second gears being meshed for transmitting movement from one of said rolls to the other of said rolls;
- and
- a timing adjustment mechanism being part of the drive and having a drive gear fixedly mounted to a rotatable and selectively axially moveable rotary shaft, said drive gear being meshed with one of said first and second gears such that axial movement of said drive gear causes angular displacement of said first and second gears, a third gear nonrotatably mounted to the rotary shaft for rotation therewith, the third gear being in engagement with said drive train for driving the third gear and the drive gear on the rotary shaft, the third gear maintaining engagement with the drive train even during axial movement of the rotary shaft, whereby said axial movement of said rotary shaft causes said axial movement of said drive gear and said angular displacement of said first and second gears to thereby effect a timing adjustment of the blade carrier roll and the anvil roll.
6 more elements
A rotary cutter assembly for transversely cutting a moving web, said rotary cutter assembly comprising:
- a blade carrier roll;
- an elongated blade mounted to said blade carrier roll, said blade extending along an axis of rotation of said blade carrier roll;
- an anvil roll mounted generally parallel to said blade carrier roll and defining therewith a nip through which the web is advanced, said anvil roll mounted for movement with relation to said blade carrier roll between operative and idle positions, in said operative position said anvil roll being proximate to said blade carrier roll to effect a cut in said web by the action of said elongated blade pressing the web against said anvil roll, in said idle position said anvil roll being spaced apart with relation to said blade carrier roll, thereby creating a space to allow the web to yield away from said blade carrier roll upon engagement by said elongated blade in order to preclude cutting of the web,
- an actuator coupled to said anvil roll for selectively moving said anvil roll between said operative and idle positions;
- and
- a drive for rotating said rolls at a tangential speed, whereby the tangential speed is correlated to a translational speed of the web through said rotary cutter assembly, said drive maintaining a driving relationship with said anvil roll during movement of said anvil roll between said operative and idle positions, said drive comprising a drive gear coupled to a prime mover, and first and second gears mounted concentrically to said blade carrier roll and to said anvil roll respectively, said first and second gears being meshed for transmitting movement from one of said rolls to the other of said rolls, said drive gear being meshed with one of said first and second gears to cause rotation of said rolls, said drive gear and said first and second gears having teeth extending obliquely with relation to their respective rotation axes, one of said gears being selectively axially moveable along the rotation axis thereof for causing a controlled rotational movement of said blade carrier roll in order to perform a timing adjustment of said blade carrier roll.
3 more elements
A rotary cutter assembly for cutting a moving web, said assembly comprising:
- first rotating means, and cutting means for cutting the web, said cutting means mounted to said first rotating means and extending along an axis of rotation of said first rotating means;
- second means defining with the first rotating means a nip through which the web is advanced, said second means mounted for movement with relation to said first means between operative and idle positions, in said operative position said second means being proximate to said first means to effect a cut in said web by action of said cutting means pressing the web against the second means, in said idle position said second means being spaced apart with relation to said first means, thereby creating a space to allow the web to yield away from said first means upon engagement by said cutting means in order to preclude cutting the web;
- third means for selectively moving said second means between said operative and idle positions;
- and
- fourth means for rotating said first and second means at a tangential speed, whereby the tangential speed is correlated to a speed of the web through said rotary cutter assembly, said fourth means maintaining a driving relationship with said second means during movement of said second means between said operative and idle positions, said fourth means comprising (a) a drive gear coupled to a prime mover, and (b) first and second gears mounted concentrically to said first means and to said second means respectively, said first and second gears being meshed for transmitting movement from one of said first and second means to the other of said first and second means, said drive gear being meshed with one of said first and second gears to cause rotation of said first and second means, said drive gear and said first and second gears having teeth extending obliquely with relation to their respective rotation axes, one of said gears being selectively axially movable along a rotation axis thereof for causing a controlled rotational movement of said first means in order to perform timing adjustments of said first means.
2 more elements
Dependencies are inferred from the claim text.