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US 4,289,493 AGranted
Apparatus for applying an overlay to a substrate
AssigneeRahdener Maschinenfabrik August Kolbus
InventorWinfried Hedrich
Life of this patent
Estimating the term…
Abstract
An overlay is applied to a substrate, for example in the manufacture of book covers, by serially wrapping the overlay around a first pair of oppositely disposed edges of the substrate, folding the corners of the overlay into the substrate and wrapping the overlay around the two remaining edges of the substrate. The first wrapping of the overlay around a pair of edges of the substrate is accomplished by feeding the substrate with the overlay adhered thereto through a wrapping station alternately in opposite directions and deflecting the overhanging portion of the substrate at the leading edge out of the path of motion so that these overhanging portions may be engaged by a wrapping tool.
Claims43
Apparatus for wrapping flexible sheet material around a rectangular substrate which is advanced along a path, the sheet material being adhered to a first surface of the substrate and extending beyond the edges thereof, said apparatus comprising:
- wrapping means for pressing the sheet material against a second surface of the substrate, said second surface being opposite to the first surface, said wrapping means being positioned at a fixed location along the path;
- means for transporting the substrate and adhered sheet material to said wrapping means along the path, said transporting means being reversible whereby the substrate may first be fed to said wrapping means in a first direction and then fed back to said wrapping means in a second direction;
- first means for deflecting sheet material extending beyond a first edge of the substrate out of the direction of movement thereof prior to the feeding of the substrate and adhered sheet material to said wrapping means in the first direction whereby said sheet material will be engaged by said wrapping means and folded around a first edge of the substrate;
- and
- second means for deflecting the sheet material extending beyond a second edge of the substrate out of the direction of movement imparted thereto by said transporting means prior to the feeding of the substrate and adhered sheet material to said wrapping means in the second direction whereby said sheet material will be engaged by said wrapping means and wrapped around the second edge of said substrate, the substrate second edge being disposed oppositely to said substrate first edge.
2 more elements
Apparatus for wrapping flexible sheet material around a rectangular substrate, said sheet material being adhered to a first surface of the substrate and extending beyond the edges thereof, said apparatus comprising:
- wrapping means for pressing the sheet material against a second surface of the substrate, said second surface being opposite to the first surface;
- means for transporting substrate and adhered sheet material to said wrapping means, said transporting means being reversible whereby the substrate may be fed to said wrapping means alternately in first and second directions;
- first means for deflecting sheet material extending beyond a first edge of the substrate out of the direction of movement thereof prior to the feeding of the substrate and adhered sheet material to said wrapping means in the first direction whereby said sheet material will be engaged by said wrapping means and folded around a first edge of the substrate;
- and
- second means for deflecting the sheet material extending beyond a second edge of the substrate out of the direction of movement imparted thereto by said transporting means prior to the feeding of the substrate and adhered sheet material to said wrapping means in the second direction whereby said sheet material will be engaged by said wrapping means and wrapped around the second edge of said substrate, the substrate second edge being disposed oppositely to said substrate first edge, said second means for deflecting sheet material including:
- lifting rod means;
- and
- means for causing said lifting rod means to pass through the path of motion of the substrate in synchronism with the movement of the substrate and adhered sheet material in the second direction whereby said lifting rod means will engage the sheet material extending beyond the second edge of the substrate during upward movement of said lifting rod means and movement of said substrate in the second direction.
5 more elements
Apparatus for wrapping flexible sheet material around a rectangular substrate, the sheet material being adhered to a first surface of the substrate and extending beyond the edges thereof, said apparatus comprising:
- wrapping means for pressing the sheet material against a second surface of the substrate, said second surface being opposite to the first surface;
- means for transporting the substrate and adhered sheet material to said wrapping means, said transporting means being reversible whereby the substrate may be fed to said wrapping means alternately in first and second directions;
- first means for deflecting sheet material extending beyond a first edge of the substrate out of the direction of movement thereof prior to the feeding of the substrate and adhered sheet material to said wrapping means in the first direction whereby said sheet material will be engaged by said wrapping means and folded around a first edge of the substrate;
- second means for deflecting sheet material extending beyond a second edge of said substrate out of the direction of movement imparted thereto by said transporting means prior to the feeding of the substrate and adhered sheet material to said wrapping means in the second direction whereby said sheet material will be engaged by said wrapping means and wrapped around the second edge of the substrate, the substrate second edge being disposed oppositely to said substrate first edge;
- and
- means for raising said wrapping means relative to the path of substrate and sheet material motion established by said transporting means to permit unimpeded motion of the substrate and sheet material through said wrapping means subsequent to the wrapping of the sheet material around the first and second edges of the substrate.
3 more elements
Apparatus for wrapping flexible sheet material around a rectangular substrate, the sheet material being adhered to a first surface of the substrate and extending beyond the edges thereof, said apparatus comprising:
- wrapping means for pressing the sheet material against a second surface of the substrate, said second surface being opposite to the first surface;
- means for transporting the substrate and adhered sheet material to said wrapping means, said transporting means being reversible whereby the substrate may be fed to said wrapping means alternately in first and second directions;
- first means for deflecting sheet material extending beyond a first edge of the substrate out of the direction of movement thereof prior to the feeding of the substrate and adhered sheet material to said wrapping means in the first direction whereby said sheet material will be engaged by said wrapping means and folded around a first edge of the substrate;
- second means for deflecting the sheet material extending beyond a second edge of the substrate out of the direction of movement imparted thereto by said transporting means prior to said feeding of the substrate and adhered sheet material to said wrapping means in the second direction whereby said sheet material will be engaged by said wrapping means and wrapped around the second edge of said substrate, the substrate second edge being disposed oppositely to said substrate first edge;
- and
- corner turn down means for engaging the sheet material extending beyond the side edges of the substrate at the corners of said first and second edges subsequent to the wrapping of the sheet material around said first and second edges, said corner turn down means folding the wrapped sheet material inwardly toward the substrate and pressing it downwardly against the substrate, said corner turn down means including:
- a first pair of rotatable turn down elements, each of said turn down elements of said first pair having a pressure surface commensurate with the surface area of the sheet material to be turned down, said turn down elements of said first pair cooperating with said sheet material at the corners of the first edge of the substrate;
- a second pair of rotatable turn down elements, the elements of said second pair each having a pressure surface commensurate with the surfaces of the sheet material to be turned down, the elements of said second pair cooperating with the sheet material at the corners of the second edge of the substrate;
- means for causing said first corner turn down elements to rotate together at a circumferential speed which is less than the linear speed of movement of the substrate;
- means for causing the corner turn down elements of said second pair to rotate at a circumferential speed which is greater than the rate of linear motion of the substrate;
- and means for moving the substrate and adhered sheet material past said corner turn down means.
8 more elements
Apparatus for wrapping flexible sheet material around a rectangular substrate, the sheet material being adhered to a first surface of the substrate and extending beyond the edges thereof, said apparatus comprising:
- wrapping means for pressing the sheet material against a second surface of the substrate, said second surface being opposite to the first surface;
- means for transporting the substrate and adhered sheet material to said wrapping means, said transporting means being reversible whereby the substrate may be fed to said wrapping means alternately in first and second directions, said transporting means including:
- a first transport roll, said first transport roll being positioned to contact the surface of said sheet material which faces outwardly with respect to said substrate;
- means for causing said first transport roll to alternately rotate in the clockwise and counterclockwise directions;
- a first pressure roll;
- means for mounting said first pressure roll above said transport roll;
- means for causing said first pressure roll to alternately rotate in counterclockwise and clockwise directions in synchronism with the rotation of said first transport roll;
- and
- means for imparting motion to said first pressure roll mounting means to cause said first pressure roll to move into and out of contact with the second surface of the substrate to thereby cooperate with said first transport roll to impart motion to substrate and adhered sheet material in the first and second directions;
- first means for deflecting sheet material extending beyond a first edge of the substrate out of the direction of movement thereof prior to the feeding of the substrate and adhered sheet material to said wrapping means in the first direction whereby said sheet material will be engaged by said wrapping means and folded around a first edge of the substrate;
- and
- second means for deflecting sheet material extending beyond a second edge of the substrate out of the direction of movement imparted thereto by said transporting means prior to the feeding of the substrate and adhered sheet material to said wrapping means in the second direction whereby said sheet material will be engaged by said wrapping means and wrapped around the second edge of said substrate, the substrate second edge being disposed oppositely to said substrate first edge.
9 more elements
Dependencies are inferred from the claim text.