Elongated-member-driving apparatus – Driving motion of driver has component in direction of...
Reexamination Certificate
1999-10-28
2001-05-01
Smith, Scott A. (Department: 3721)
Elongated-member-driving apparatus
Driving motion of driver has component in direction of...
C227S100000, C270S037000, C270S058180
Reexamination Certificate
active
06223964
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a device for the longitudinal stitching of multipiece printed products.
U.S. Pat. No. 4,204,626 discloses a wire-stitching device of this type in which a rotationally driven rotary stitcher is assigned to a stitching-hook closing arrangement, which is formed by a likewise rotationally driven stitching-hook closing cylinder. The axes of rotation of the stitcher and the stitching-hook closing cylinder are parallel to one another and run at right angles to the conveying direction of the products to be stitched. The rotary stitcher has a cylindrical carrier, in which a guide bush for a displaceable stitching-hook drive-in plunger is arranged, the guide bush running in the radial direction. The guide bush, which is rotatable about its radial longitudinal axis, is held in a fixed position in the radial direction in the carrier.
When the rotating stitching head meets the product advanced along an essentially rectilinear path, the U-shaped stitching hook transported by the stitching head is driven into the product in such a way that first one stitching-hook leg and then the other stitching hook leg penetrates the product and passes through the latter. During the driving-in operation, the position of the stitching-hook legs changes relative to the product. The stitching-hook legs are then bent. To this end, the stitching-hook closing cylinder has two bending elements, of which one is attached to the stitching-hook closing cylinder in a fixed position and the other is attached to the stitching-hook closing cylinder in a rotational manner. The two bending elements, as viewed in the direction of rotation of the stitching-hook closing cylinder, are arranged one behind the other in such a way that the leading bending element comes into effect on the leading leg of the stitching hook and the trailing bending element comes into effect on the trailing leg of the stitching hook.
The object of the present invention, then, is to provide a longitudinal-stitching device of the type mentioned at the beginning which enables the legs of the stitching hooks to be driven at high speed into the products simultaneously and essentially in an approximately right-angled direction relative to the products.
SUMMARY OF THE INVENTION
The above and other objects and advantages of the present invention are achieved by the provision of a rotating stitcher which is provided with at least one stitching head for setting wire stitching hooks in the products. Each stitching head includes a pivotally mounted guide which extends essentially radially to the axis of rotation of the stitcher, and a displaceable stitching-hook drive-in plunger is mounted in each guide. A control arrangement is provided for pivoting each pivotally mounted guide during rotation of the stitcher, and each guide together with the guide together with the stitching-hook drive-in plunger, in the stitching region, is held over a certain section in a position in which the displacing direction of the stitching-hook drive-in plunger is approximately at right angles to the conveying direction of the products, which enables the wire stitching hooks to be satisfactorily driven in with both stitching-hook legs simultaneously without the direction of the stitching-hook legs changing relative to the product during the driving-in operation. The closing of the set stitching hooks, i.e. the bending of the two stitching-hook legs, may be effected in a simple manner, since the stitching hooks perform a linear movement during the closing operation.
Two or more stitching heads per stitcher of the type defined above are preferably provided, and these stitching heads in each case interact in the stitching region with linearly moving bending members of the stitching-hook closing arrangement.
Further preferred developments of the longitudinal-stitching device according to the invention are outlined in the following detailed description of the invention.
REFERENCES:
patent: 3762622 (1973-10-01), Noren
patent: 4204626 (1980-05-01), Kutzner et al.
patent: 4315588 (1982-02-01), Faltin
patent: 4792077 (1988-12-01), Faltin
patent: 5172897 (1992-12-01), Hansch et al.
patent: 5174557 (1992-12-01), Meier
patent: 5342032 (1994-08-01), Meier
patent: 5356125 (1994-10-01), Hansch et al.
patent: 5464199 (1995-11-01), Stauber
patent: 5590828 (1997-01-01), Stauber
patent: 5772195 (1998-06-01), Mueller
patent: 27 55 209 (1979-06-01), None
patent: 0 399 317 A1 (1990-11-01), None
patent: 0 606 555 A1 (1994-07-01), None
patent: 0 691 215 A1 (1996-01-01), None
Alston & Bird LLP
Ferag AG
Smith Scott A.
LandOfFree
Device for longitudinally stitching multipiece printed products does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for longitudinally stitching multipiece printed products, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for longitudinally stitching multipiece printed products will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2469562