Sheet feeding or delivering – Delivering – With transfer means between conveyor and receiver
Patent
1998-07-08
2000-10-31
Valenza, Joseph E.
Sheet feeding or delivering
Delivering
With transfer means between conveyor and receiver
271216, 271311, 271312, 271313, 271315, 270 60, 1484781, 1484821, B65H 2900
Patent
active
061390097
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a device and a process for depositing signatures or folded products. A paddle wheel is provided with a stationary stripper that acts on a leading edge of a product. At least one movable second stripper projects into the paddle wheel. At least one conveyor belt is located downstream of the second movable stripper.
DESCRIPTION OF THE PRIOR ART
DE 38 27 701 A1 describes a device for the overlapped deposition of printed products for a web-fed rotary printing press. This device essentially consists of a paddle wheel, into which a stationary stripper extends, air nozzles for affecting the braking process, air nozzles for affecting the acceleration process during deposit, a number of transport rollers and a conveyor belt. The stationary stripper slows a product located in a pocket of the paddle wheel, so that it is conveyed out of the paddle wheel. After the product has been partially pushed out of the pocket, a rear end of the product is grasped by the transport rollers and accelerated to the speed of the conveyor belt.
In connection with this prior art device, it is disadvantageous that the transport rollers initially grasp the open end of the product and thereby "push" the product. Because of this the product can become bent and damaged.
It is furthermore disadvantageous that the air pressure required for the precise slowing and acceleration of the products is not only determined by the speed, but also by the mass inertia and surface condition of the printed products and must be respectively matched to these.
A device and a method for transporting and depositing signatures has become known from EP-A-0 302 169. A paddle wheel and a transport belt are provided for this purpose. A revolving stripper is provided in the range of action of the paddles, which assists the overlapping deposit of the signatures on the transport belt. The paddle wheel and the stripper rotate in the same direction.
A device and a method for collecting sheet-shaped signatures has become known from EP-A-0 179 992. A paddle wheel with paddles for transporting the signatures is provided. At a suitable location they are dropped in stacks onto a transport belt by a guided moving belt. A pivotable buffer, which projects into the range of action of the paddles and is synchronized with them, is provided. This buffer can also be designed to be not pivotable.
SUMMARY OF THE INVENTION
The present invention is directed to the object of creating a device for depositing signatures, or respectively folded products, on a movable distributor.
This object is attained in accordance with the present invention by a device and a method which utilizes a paddle wheel for depositing signatures or folded products onto a downstream conveyor belt. The paddle wheel has a movable stripper with a circumferential stripper surface that acts on a leading edge of a product. At least one stationary stripper projects into the paddle wheel. The movable stripper is rotatably driven and intersects a periphery of the stationary stripper.
The removal of products from a paddle wheel in accordance with the present invention is achieved in an advantageous manner in two steps: first, the product is slowed to almost a standstill in the circumferential direction by means of a stationary stripper and in this way is partially pushed out of the pocket of the paddle wheel. Subsequently a revolving stripper, which acts on the front end of the product, accelerates the products to almost the transport speed of the conveyor belts. The following advantages ensue by means of this two-step removal of the product from the pocket: stationary strippers impart almost no pressure forces in the radial direction of the paddle wheel, by means of which a rapid, low-friction removal of the product without noticeable deformation takes place. By the appropriate placement of the stationary stripper, it is possible to generate a large differential speed between the inside of the paddle wheel and the product resting thereon. Because of this, the remo
REFERENCES:
patent: 2014933 (1935-09-01), Harless et al.
patent: 4834361 (1989-05-01), Fenske et al.
patent: 4865307 (1989-09-01), Crofutt et al.
patent: 4971303 (1990-11-01), Lange et al.
patent: 5028045 (1991-07-01), Muller
patent: 5611530 (1997-03-01), Maresse et al.
Bower Kenneth W
Koenig & Bauer--Albert Aktiengesellschaft
Valenza Joseph E.
LandOfFree
Device and process for delivering imbricated 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 and process for delivering imbricated products, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and process for delivering imbricated products will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2042895