A staple wire cutting element (4) is mounted displaceably on a stapling device (1) in which staple wire segments are shaped into a staple and driven into a sheet stack. A control lever (8) that is in engagement with a radial cam unit (6) engages the cutting element (4). The radial cam unit (6) is driven via an overrunning clutch (10), one end of which has a gear (11) which is fixed to the radial cam unit (6) and engages into a gear (5b) of a stepping motor (5). The other end of the overrunning clutch (10) has a gear (12) which is fixed to a transport wheel (13) for staple wire transport. A gear (27), which is mounted displaceably along its rotation axis and is mounted rotatably about the same rotation axis as the gear (5a), engages into the gear (12). The gears (5b, 27) are equipped at their sides facing one another with tooth sets (28). For backward transport of the wire segment which is ready for staple shaping, the displaceable gear (27) is brought into engagement with the gear (5b), thus allowing the wire to be transported backward, bypassing the overrunning clutch (10).
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part of application Ser. No. 09/044,191, filed Mar. 19, 1998, entitled "Stapling Device," by Heinz-Guenter Bethmann, Helmut Bloser and Juergen Ries.
Priority Data
Mar 27, 1997 [DE] 197 12 876 Dec 17, 1997 [DE] 197 56 119
The invention relates to a device for supplying, centering, and cutting a stapling wire in a stapling device, the subsequent formation of a staple, and stapling a stack of sheets. According to various aspects of the invention, methods and apparatus for feeding a wire to a lever assembly having a horizontally moveable cutter, moving the moveable cutter in a direction transverse to a stapling direction by actuating the lever assembly with the wire, and cutting the wire with the cutter, forming a staple from the wire, and driving the staple into sheets.
A staple apparatus of the present invention comprises a staple wire unit for storing a staple wire as a roll-like form which provides a staple with which a stack of sheet materials is bound, a feeding roller for feeding the staple wire which is stored in the storage section in accordance with a stacked amount of sheets, a cutting device for cutting the staple wire fed by the feeding roller to form a staple, a conveying clip for conveying the staple formed by the cutting device to a predetermined position, and a stapling apparatus bending the staple conveyed by a conveying clip to the predetermined position to staple the stacked sheet materials.
A wire-stitching apparatus for producing wire-stitched print items includes a conveying arrangement for supplying folded, printed products in a straddling position; a wire-stitching unit installed at an adjustable distance above the conveying arrangement and including a bending device; at least one wire-stitching aggregate; and a stitching carriage for moving the at least one wire-stitching aggregate back and forth along a path. The wire-stitching aggregate includes a bender for forming legs of a staple and a driver for pushing the staple legs through the printed products. At least one wire feed feeds wire to the one wire-stitching aggregate at a stitching wire length. At least one adjustable wire-cutting device for adapts a wire staple to the thickness of the printed products. A control unit measures the thickness of the printed products positioned on the conveying arrangement upstream of the wire-stitching unit, and/or processes stored data related to the printed products.
A stapler for driving a staple into a sheet stack. The stapler includes a first cartridge configured to receive a first staple defined by a first leg length, and a second cartridge configured to receive a second staple defined by a second leg length. The stapler includes a stapling head configured to drive the staples into the sheet stack, and a cartridge positioning actuator configured to selectively position either the first or the second cartridge over a predetermined position on the sheet stack. The stapler can have a single stationary stapling head, and the cartridges can be moved in position over the stapling head. Alternately, each cartridge can have its own associated stapling head. The stapler can include a sensor to determine the thickness of the sheet stack. A controller can receive a thickness signal from the sensor and determine which of the cartridges to position over the sheet stack.
A staple-forming and inserting apparatus 10 is provided having an apparatus 22 for movement of the cutter box 20 to allow automatic variations in staple length for one or more staple-forming and inserting apparatus 10 said staple-forming and inserting apparatus 10 being provided with a staple crown 105 supporting shoe 56 to permit supported insertion of the staple into the workpiece the device 10 having blades 50a, 50b for pinch-cutting of the staple wire 72 to provide chisel ends to legs 101 of stable 100 device 10 have key and rail construction to allow the operating drive 16 and bender 18 rails to travel on keys 32 that may be replaced to avoid wear on drive 16 and bender 18 rails and replacement of the rails and a floating bender rail 18 that prevents overstrike and damage to knives 50a, 50b.
