Sheet feeding or delivering – Delivering – Multiple discharge
Patent
1994-08-03
1996-04-02
Terrell, William E.
Sheet feeding or delivering
Delivering
Multiple discharge
4147927, 271282, B65H 2900
Patent
active
055033873
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for conveying individual printed products to a second conveying track from a staggered flow of printed products on a first conveying track. A device of this type has become known in the prior art from DE-A-28 20 957. Such a device can be used, for example, to increase the output when processing a scale-shaped or staggered flow coming from a rotary printing press. However, it can also be used for removing faulty printed pieces, or for sorting, etc. It has now been shown that the exact removal of individual printed products is not possible in a dependable manner by means of this device. For this reason this device has not been employed in actual use.
It now is the object of the invention to provide a device of the type mentioned, which dependably allows the correct removal of printed products from a scale-shaped flow, but is still simple to produce.
SUMMARY OF THE INVENTION
The above object is attained with the device in accordance with the invention in that during the movement away from the step the conveying speed of the second conveying track is increased in response to that movement. Because of the increase in speed, a printed product removed from the scale-shaped flow is moved away from the step over a shorter distance and simultaneously more rapidly. In addition, negative shifting is prevented by the increase in conveying speed in the area of the second conveying track. It has also been shown that the increase of the speed of the conveying track per se can be realized very dependably and in a simple structural way by means of a mechanical coupling. Therefore the invention permits the production of a device wherein an elaborate control of the drive mechanism of the second conveying track is avoided.
In accordance with a further embodiment of the invention, the second conveying track has a receiving opening at the front end which can be adjusted in width. By means of the above, the adaptation of the receiving opening to the thickness of the printed products to be removed is possible. If the receiving opening is closed only at the time the advance edge of the printed product to be removed has already been inserted into the receiving opening, there is the considerable advantage that printed products consisting respectively of several sections are not torn apart and can be dependably removed.
Thus it is possible to remove voluminous printed products consisting of several sections considerably faster and over a shorter distance as compared with the prior art. By means of the device in accordance with the invention, the removal is possible over a shorter distance as compared with the prior art.
Further advantageous features ensue from the subsequent description and the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
An exemplary embodiment of the invention will be described in detail below by means of the drawings. Shown are in:
FIGS. 1 and 2, partial views of a device in accordance with the invention, wherein some parts have been respectively left out for reasons of the representation,
FIG. 3, a plan view of individual exploded parts of the device in accordance with the invention, and
FIGS. 4 to 6, removal of a printed product from a scale-shaped flow schematically.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 shows a first conveying track 1 with two conveyor belts 3 and 4, which have a step S for spreading open a scale-shaped flow 28. In FIG. 2 the conveying track transports the scale-shaped flow 28 from left to right over the step S. Above the end of the conveyor belt 3 a counting head 7, known per se, is disposed at a distance from the scale-shaped flow, by means of which the printed products are individually counted and by means of which it is also possible to determine the positions of the printed products. The counting head 7 is fastened to a machine frame 5, for example.
A second conveying track 2 starts above the step S and extends obliquely upward from it. This second conveying track (2) has a carriage 6 which can be displaced continuously adjustably on a guide
REFERENCES:
patent: 3464537 (1969-09-01), Thull
patent: 4004694 (1977-01-01), Sjogren
patent: 4932647 (1990-06-01), Svensson
Fritsche Beat
Straessler Rene
Grapha-Holding AG
Morse Gregory A.
Terrell William E.
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