EP1904389A1

EP1904389A1 - Device for processing sheet-like valuable documents

Info

Publication number: EP1904389A1
Application number: EP06754381A
Authority: EP
Inventors: August HÄUSLER; Gerhard Schinzel-Reiner
Original assignee: Giesecke and Devrient GmbH
Current assignee: Giesecke and Devrient GmbH
Priority date: 2005-06-15
Filing date: 2006-06-14
Publication date: 2008-04-02
Also published as: WO2006133936A1; US20090230616A1; DE102005027712A1

Abstract

The invention relates to a device for processing sheet-like valuable documents, particularly banknotes, comprising a device for diverting sheet-type products (4) by means of at least one diverting element (1, 2), which defines a diverting axis (9a, 9b) for diverting the sheet-type products from a plane of conveyance into another plane of conveyance. To this end, the diverting axis (9a, 9b) of at least one diverting element (1, 2) is oriented at an angle to a conveying device (A, C) of the sheet-type products (4). When placing two diverting elements (1, 2) that are oriented at an angle and a diverting roll (3), which is placed therebetween, the sheet-type products (4) conveyed along a conveying distance can turn round 180° in a small space without interrupting conveyance. According to another aspect of the invention, the diverting elements (1, 2), which are oriented at an angle, cannot move and are provided with means (7; 10; 11, 12) in order to reduce the sliding friction of a conveyor belt (5) or of the sheet-type products (4) on the diverting element (1, 2).

Description

Device for processing sheet-shaped value documents

The present invention relates to a device for processing sheet-shaped value documents with a device for deflecting sheet material.

In connection with the processing of banknotes, devices are known in which banknotes are conveyed in such a way that the banknotes are turned about one of their axes. For example, the banknotes to be used can be clamped between two flat belts which serve to transport the banknotes and which are guided one above the other by 180 ° twisted over rollers in order to turn the banknotes. Such devices are described, for example, in EP 0 532 217 A1 and US Pat. No. 6,705,470 B2. These devices provide a continuous processing of the banknotes, since the turning takes place along their transport path. However, due to the twisting of the belts, the banknotes are bent simultaneously in two directions and are thereby subjected to mechanical stress during the turn, whereby the banknotes may be damaged. These systems, also referred to as "belt turners", have the further disadvantage that the twisting of the belts requires a great deal of space for the turning of the banknote.

Furthermore, DE 198 59535 A1 describes a device for turning sheet material, in which a multiplicity of sheets can only be processed continuously if a certain transport distance between the sheets is maintained, since the sheets depend on whether they are turned over are to be redirected by means of an actuator in the direction of different transport routes. The provision of different transport paths takes up a great deal of space, and the technical realization is complicated since not only the actuator but also the sheet feed are controlled. must be in order to prevent a collision of the leaves to be processed.

The object of the invention is to provide an apparatus for processing sheet-shaped value documents, in particular banknotes, with a small-sized deflection device for deflecting, in particular turning, the sheet material.

This object is achieved by a device having the features of the independent claims. In dependent claims advantageous embodiments and developments of the invention are given.

According to the invention, the device for processing sheet-shaped documents of value comprises a deflection device with a deflecting element, the deflection axis of which - for deflecting the sheet material from one transport plane into another transport plane - is oriented obliquely to the transport direction of the sheet material. The deflection axis coincides either with the intersection of the two transport planes or is parallel to it. The latter is the case when the sheet material is deflected along an arcuate path, which is preferable for the protection of the sheet material.

The advantage of the oblique orientation of the deflecting element with respect to the transport direction of the sheet material is that the transport path can be twisted in a technically particularly simple manner, wherein at the same time a direction of transport direction is arbitrarily adjustable based on the skew angle. Thus, in the case of an aligned by 45 ° to the transport direction deflecting element and a wrap angle of 180 ° not only the sheet material, but at the same time changes the transport direction by 90 °. With a wrap angle of 360 °, you can gene the transport within the same transport plane without Blattgutwendung move parallel to a distance that depends solely on the radius of the deflection.

The deflection device is particularly space-saving, and it is particularly advantageous that even the arrangement of a single deflection element makes many variations possible, namely depending on the skew angle, the wrap angle and the distance of the transport plane to the deflection axis, i. from the radius of the deflecting element.

In a preferred embodiment, not only one but at least two such obliquely oriented to the transport direction of the sheet material deflecting elements is used. Thus, for example, in the case of parallel alignment of the deflection axes inclined by 45 ° and a wrap angle of 180 ° in each case, the transport direction and the transport plane can be moved in parallel at the same time.

Between the two inclined deflecting a further deflecting element is preferably arranged. Particularly preferably, the deflection axis of this further deflection element is aligned in a direction transverse to the transport direction of the sheet material and can then be provided, for example, in the form of a rotatable roller. The advantage of using the three deflecting elements arranged according to the invention lies in the fact that, with a suitable arrangement of the deflecting elements, the twisting of the transport path as well as the transport direction can be adjusted in any way at the same time. Such a sheet material turner can be made particularly compact and compact by the low technical complexity. The use of further deflection elements, in particular transversely to Transport direction oriented pulleys before, between or behind the three deflecting elements may still be appropriate.

In one embodiment, the two deflecting elements are arranged at equal angles at an angle to the transport direction of the sheet material, but with different signs. For example, the angles can be + 45 ° and -45 °. If in this case, for example, the wrap angles are in each case 180 ° and the angle of wrap about an intermediate roller arranged transversely to the transport direction is also 180 °, the sheet material can be turned without the direction of transport changing. Depending on the sheet guide, the sheet transport plane in front of the first obliquely oriented deflecting element can lie parallel to the sheet transport plane behind the second obliquely oriented deflecting element or the two transport planes can lie in the same plane. In addition, the deflecting elements can be arranged relative to one another in such a way that at the same time the transport direction is displaced in parallel.

The advantage with this arrangement of the deflecting elements is, in particular, that the sheet material can be turned around the transport axis in a particularly space-saving manner, ie rotated by 180 °. Furthermore, the turning of the sheet material takes place without interruption, ie without stopping and restarting the transport system. This allows a high transport speed. Furthermore, it is not necessary to control the supply of the sheet material in order to prevent collisions of the sheet material or sheet accumulation. On the contrary, the sheet material is turned in the order in which it is supplied to the deflecting device.

The deflection of the sheet material according to the invention about an obliquely arranged deflecting element is comparable to the fact that a sheet of paper obliquely to a Table edge is aligned and pulled around the edge of the table. This deflection or turning is particularly gentle for the sheet material, since it is deformed in one direction only. Thus, no mixing deformation takes place in several directions, as is the case, for example, with known belt turners in which transport belts are twisted by 180 °.

The deflection device according to the invention is suitable both for the longitudinal transport and for the transverse transport of sheet material. If the device is additionally combined with a device for changing the sheet stock orientation, that is to say for changing from a longitudinal transport to a transverse transport of the sheet material, a complete position sorting of the sheet material is possible. That is, the sheet material can be rotated and / or turned in any way.

In a further embodiment, at least one of the obliquely oriented deflecting elements can be actively moved back and forth in relation to the transport direction. This is advantageous in particular when sheet material of different sizes is processed in the apparatus for processing sheet material. Depending on whether the sheet material is to be transported flush on one side, for example, or the center of each sheet is to lie on a predetermined path, the transport path is displaced in parallel by the forward or backward movement of the inclined deflecting element by a desired amount.

Additionally or alternatively, it may be provided to adjust the inclined position of the deflection axis of two deflection elements. By amount same change in the inclination is also a parallel displacement of the transport path without changing the transport direction. Would against it changed the inclination of only one deflecting element, this would cause the transport direction angle changes. However, this effect can be used to correct for the sheet stock orientation.

The active transport of the sheet material in the deflection can be done in different ways. As a transport device, one or more flat or round belts or a plurality of rotatable rollers can be used. Particularly preferably, the transport device comprises at least one endless belt which guides the sheet material in the deflection device from both sides. As a result, the technical complexity of the device according to the invention can be further reduced.

In practice, it may be necessary to arrange the deflection elements firmly and non-rotatably. This applies primarily to the obliquely arranged deflecting elements. If the deflecting elements are provided firmly, this leads to a sliding friction of the transport belts for the sheet material or of the sheet material itself at the deflecting elements. Corresponding frictional forces act both in the axial direction and in the circumferential direction of the deflecting element. According to a particular inventive aspect, the at least one obliquely arranged deflecting element therefore has means in order to reduce the frictional forces on a deflecting surface of the non-rotatable deflecting element.

According to a first alternative of this inventive aspect, the deflecting surface of the at least one deflecting element is provided with air slots. Preferably, means are provided for introducing air into a region between the deflection surface and the sheet material. As a result, the deflection of the sheet material takes place with compressed air support on an air cushion, which reduces the sliding friction. This is especially beneficial if the sheet transport in the device is done by means of belts. Compressed air is then introduced through the louvers in the surface of the guide elements into a region between the transport belt and the guide element, so that the transport belt slides on the air cushion and holds it for a correspondingly longer time.

According to a second alternative, the at least one deflecting element comprises rollers in the deflection surface whose axes of rotation are arranged transversely to a transport direction of the sheet material, that is generally oblique to the deflection axis. If the transport belt for the sheet material or the sheet material itself is guided over the specially arranged rollers of the deflecting element, the frictional forces on the deflecting element can be largely eliminated since the rollers rotate with the transport belt or the sheet material in the transport direction. If the transport device for the sheet material includes, for example, a plurality of belts running in parallel and these belts each have a width less than or equal to the width of the rollers, then the belts run only on the rollers of the deflecting element and no frictional forces on the deflecting element occur any more.

According to a third alternative, the deflection surface of the at least one deflecting element is rotatably mounted about the deflecting axis of the deflecting element and comprises rollers in the deflecting surface, wherein the axes of rotation of the rollers are arranged transversely to the axis of rotation of the deflecting element and thus orthogonal to the direction of rotation of the deflecting surface. Since both the deflection surface and the rollers are rotatably arranged, frictional forces in the axial direction as well as in the circumferential direction of the deflection element are significantly reduced if the transport belt for the sheet material or the sheet material itself is deflected by means of this deflection element. Further features and advantages of the invention will become apparent from the following description of various, inventive embodiments and alternative embodiments in conjunction with the accompanying drawings. Show:

Figure 1 is a device for deflecting sheet material;

Figure 2 shows the device of Figure 1, comprising a transport element for the sheet material in the form of an endless belt;

FIGS. 3A-C show the course of the sheet material and the course of the belt within the device from FIG. 1;

FIG. 4 shows the device from FIG. 1 with an alternative sheet material path;

FIG. 5 shows the device from FIG. 1 with air slots in a non-moving deflection surface;

FIGS. 6A-B a deflection element with obliquely arranged rollers in a non-moving deflection surface; and

FIGS. 7A-C show a deflecting element with transversely arranged rollers in a rotatable deflection surface.

Figure 1 shows a device for deflecting sheet material, which can be used for example in devices for processing sheet-shaped value documents. The core pieces of the special embodiment of the deflection device according to the invention shown in FIG. 1 are three deflecting elements 1, 2, 3, wherein two of the deflecting elements are arranged in a 45.degree. Angle at an angle to the transport direction A, C are arranged and rigid. Another deflecting element 3 in the form of a rotatable roller is arranged between the two oblique elements 1, 2, and its deflection axis is aligned transversely to the transport direction B of the sheet material 4. The wrap angle is 180 ° around each of the three deflection elements. By means of the deflection device shown, it is therefore possible to turn sheet material 4 without interrupting the transport and without changing the transport direction in a small space by 180 °. The sheet material 4 is drawn in all figures to simplify the presentation as a band.

The sheet material 4 to be turned encounters in the illustrated embodiment on the inside of the first inclined deflecting element 1 and is forwarded so that it strikes the inside of the second obliquely arranged deflecting element 2 after the centrally arranged deflection roller 3. As a result, the transport planes in front of and behind the deflection device lie in different planes parallel to one another. Would the sheet material 4 instead meet after the deflection roller 3 on the outside of the second deflection element 2, the transport planes could be in front of the first obliquely arranged deflecting element 1 and after the second obliquely arranged deflecting element 2 in a common plane at suitably chosen Umlenkdurchmessern. This can be saved in particular space in the width direction of the transport path.

FIG. 2 shows the device from FIG. 1, wherein furthermore a transport belt 5 is shown as a transport element for the sheet material 4. The transport path of the sheet material corresponds to the transport path shown in Figure 1, wherein the transport path can also be chosen differently if necessary. In particular, the transport direction A, B, C of the sheet material 4 by changing the wrap angle at the two obliquely arranged deflection elements 1, 2 and / or varied by changing their inclination. One of the advantages of the deflection device shown is that a single or a plurality of juxtaposed endless belts 5 are sufficient to guide the sheet material 4 in the deflection between two sides of the belt 5 along the deflection elements 1, 2, 3. The belt 5 is driven by means of a drive, which in the case shown consists of a plurality of drive rollers 6, wherein the drive is usually designed according to the type of transport element. Instead of using a conveyor belt, the sheet material can also be guided between rollers and baffles by the deflection.

Figure 3 A shows the Blattgutverlauf 4 by the turning system shown in Figures 1 and 2. For better illustration, the transport belt 5 and the three deflecting elements 1, 2, 3 have been omitted here. With reference to FIG. 3A, it is easy to see how the turning of the sheet material 4 takes place when three deflecting elements are provided and these are arranged as already described.

FIG. 3B shows in isolation the endless belt 5 from FIG. 2. FIG. 3B is intended to make it clear, in particular, that in the described deflection device a single belt is sufficient to guide the sheet material.

In Figure 3C, Figures 3A and 3B are assembled. It can clearly be seen that the sheet material 4 is guided between two sides of the one endless belt 5 by the deflection device.

FIG. 4 shows a sheet material course along the deflecting elements 1, 2, 3 which is an alternative to FIG. 1. The sheet material 4 in this case meets the variant of FIG. 1 on the outside of the first one at 45 ° Deflection element 1 and is forwarded with a changed by 90 ° transport direction B. Again, the transport direction A, B, C of the sheet material is changed by the arranged between the two obliquely arranged deflecting elements 1, 2 guide roller 3 by 180 ° and by the second inclined by 45 ° deflecting element 2 again by 90 °. That the transport directions A, C before the first and after the second obliquely arranged deflection element are the same, lies at the wrap angle of the sheet 4 of 180 ° at all three deflection elements 1, 2, 3. Furthermore, due to these wrap angles, the transport planes before the first and after the second obliquely arranged deflecting element in this case again in parallel.

In a modification, not shown, at least one of the obliquely arranged deflecting elements 1, 2 are actively moved back and forth in relation to the transport direction. As a result, the transport path is moved forward or backward in parallel depending on the movement. The movement of the obliquely arranged deflection elements 1, 2 is particularly advantageous when sheet material of different sizes to be processed, since the center of each sheet is moved accordingly. In this case, the described parallel displacement can also take place by virtue of a change in the inclination of the obliquely arranged deflection elements 1, 2 that is the same in magnitude.

Figure 5 shows a first particular embodiment of the two rigid, obliquely arranged deflecting elements 1, 2. The deflecting elements 1, 2 are provided with air slots 7 and air connections 8, so that air can be introduced via the air connections 8 in the interior of the deflection elements 1, 2 , The introduced air is then passed out through the air slots 7 from the deflecting elements 1, 2, so that between the deflecting elements 1, 2 and the sheet material 4 (not shown) or the transport belt 5 (not shown) forms an air cushion. As a result, the sliding friction is reduced at the deflection surfaces of the deflecting element.

FIG. 6A shows a second embodiment of one of the obliquely arranged deflection elements 1, 2. The deflection element 1 shown comprises a plurality of rollers 10, which are arranged in mutually parallel rows around the deflection element 1 in the deflection surface. The parallel rows of rollers preferably rotate in a direction in which a transport belt for the sheet material or the sheet material itself is guided over the deflecting element 1. Therefore, the axes of rotation of the rollers 10 are preferably arranged transversely to the transport direction D of the sheet material, so that the rollers rotate in the direction of transport D together. This ensures that frictional forces are minimized both in the circumferential direction and in the axial direction of the deflecting element 1.

FIG. 6B shows a plurality of parallel transport belts 5 for the sheet material, the transport belts 5 each running completely over one of the parallel rows of rollers. As a result, it is possible, in particular, to almost completely eliminate the frictional forces, since the transport belts 5 do not touch the deflecting surface of the deflecting element 1.

FIG. 7A shows a third special embodiment of the deflecting element 1. The deflecting element 1 comprises a multiplicity of rotational elements 11, wherein the rotational elements 11 are strung along the deflecting axis 9a of the deflecting element 1, as is clear from consideration of FIG. FIG. 7C shows a single rotational element 11. The rotational elements 11 are equipped with rollers 12 whose axes of rotation are arranged transversely to the deflecting axis 9a of the deflecting element 1. As with the arrows in Figure 7C is shown, the rotation elements 11 are rotatably mounted on the axis 9a of the deflecting element 1 and the rollers 12 rotatably mounted on the rotating elements 11, wherein the rotational directions are orthogonal to each other.

Are, as shown in Figure 7 A, running parallel conveyor belt 5 on the deflecting element 1, reduces the sliding friction on the deflecting element 1 both in the axial direction and in the circumferential direction of the deflecting, since the rotation elements 11 and the rollers 12 of the rotating elements 11 in different Directions are rotatably arranged and can rotate by the movement of the conveyor belt 5 in the corresponding directions.

Claims

Patent claims

1. Apparatus for processing sheet-shaped value documents, in particular banknotes, comprising means for deflecting sheet material (4) by means of at least one deflecting element (1, 2) having a deflection axis (9a, 9b) for the deflection of the sheet material (4) of a Transport plane defined in another transport plane, characterized in that the deflection axis (9a, 9b) is aligned obliquely to a transport direction (A, B) of the sheet material (4).

2. Apparatus according to claim 1, characterized by two such obliquely oriented deflecting elements (1, 2) along a transport path of the sheet material (4).

3. Apparatus according to claim 2, characterized by a further deflecting element (3) with a further deflection axis (9c) for the deflection of the sheet material (4) which is arranged between the two obliquely oriented deflecting elements (1, 2).

4. Apparatus according to claim 3, characterized in that the deflection axis (9c) of the deflecting element (3), which is arranged between the two obliquely oriented deflecting elements (1, 2), transversely to the transport direction (B) is aligned.

5. Apparatus according to claim 4, characterized in that the transversely to the transport direction (A, C) aligned deflection element (3) is a rotatable roller.

6. Device according to one of claims 2 to 5, characterized in that the two obliquely oriented deflecting elements (1, 2) at + 45 ° and -45 ° to the transport direction (A, C) are aligned.

7. Device according to one of claims 2 to 6, characterized in that the transport plane in front of the first obliquely oriented deflecting element (1) parallel to the transport plane behind the second obliquely oriented deflecting element (3).

8. Apparatus according to claim 7, characterized in that the two transport planes lie in one plane.

9. Device according to one of claims 1 to 8, characterized in that at least one of the obliquely oriented deflecting elements (1, 2) with respect to the transport direction (A, C) is movable backwards or forwards.

10. Device according to one of claims 1 to 9, characterized in that the oblique position of the deflection axis (9a, 9b, 9c) of at least one, preferably two or more deflection elements (1, 2, 3) is adjustable.

11. Device according to one of claims 1 to 10, characterized by a transport device (5) for moving the sheet material (4) along the at least one deflecting element (1, 2).

12. The device according to claim 11, characterized in that the transport device (5) comprises at least one flat or round belt or a plurality of rotatable rollers.

13. The apparatus according to claim 12, characterized in that the transport device (5) comprises at least one endless belt, which guides the sheet material (4) in the deflection on both sides.

14. Device for processing sheet-shaped documents of value, in particular according to one of claims 1 to 13, comprising means for deflecting sheet material (4) by means of at least one deflecting element (1, 2) having a deflection axis (9a, 9b) for the deflection of the Sheet material (4) defined by a transport plane in another transport plane and has a deflection surface, characterized in that the at least one deflecting element (1, 2) means (7; 10; 11, 12) to reduce frictional forces on the deflection surface.

15. The apparatus according to claim 14, characterized in that the deflection surface of the at least one deflecting element with louvers (7) is provided.

16. The apparatus according to claim 15, characterized by means for introducing air through the air slots (7) in an area between the

Deflection surface and the sheet material.

17. The device according to claim 14, characterized in that the at least one deflecting element (1, 2) comprises rollers (10) in the deflection surface, whose axes of rotation are arranged obliquely to the deflection axis (9a, 9b).

18. The apparatus according to claim 14, characterized in that the deflection surface is rotatably mounted about the deflection axis (9a) and rollers (12). comprises in the deflection, whose axes of rotation are arranged transversely to the deflection axis (9a).

19. The apparatus according to claim 18, characterized in that the rotatable deflection surface is formed by a number of rotation elements, which are lined up along the deflection axis (9a) and rotatable about the deflection axis and which carry the rollers (12).