HK1201803B - Suction conveyor device for transporting flat items, and system for producing flat items comprising said suction conveyor - Google Patents

Description

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The essence of a suction conveyor is to apply pressure not only to the flat parts to be transported with a forward movement in the direction of transport, but also to the substrate at the same time. The movement in the direction of transport and thus the transport of the flat parts is ensured by endlessly circulating conveyor belts, which together form the conveyor system.This additional pressure causes the flat parts to be more closely attached to the conveyor belts, ensuring that the flat parts are carried by them without slipping or slipping in a fixed relative position to the conveyor belts moving them, thus ensuring a more precise and safe transport of the flat parts. Only such precise and safe transport ensures that the flat parts arrive at the exit of the suction manifold at a defined point and in a defined direction,This is particularly important in a plant of the paper processing industry for the production of blocks or books, preferably on the way from a cutting station to a stacking station, where the arrangement and orientation of the sheets of paper cut to a given format must remain untouched and undisturbed in order to ensure a proper stacking in the stacking station.

The endlessly rotating flexible conveyor system, as mentioned above, consists of a number of conveyor belts spaced across the direction of transport, parallel to each other and endlessly rotating, in many cases the upper drum of which is designed to accommodate the flat parts with its outer or upper side. The suction system usually has a suction box, the suction side of which, where the flat parts of the conveyor belt are carried, is closed with a sheet. The conveyor belts thus run along the hole or on the drum with their conveyor belt.

Although the conventional design described above has proved itself in practice in many cases, it has been shown that the sliding of the drums leading the flat parts of the conveyor belts on the suction plate results in increased friction between the conveyor belts and the perforated plate, which is caused in particular by the low pressure produced by the suction arrangement, which affects not only the flat parts but also the conveyor belts. This friction not only creates increased drag on the conveyor belts, which leads to a greater load on the conveyor belts and an increased energy consumption, but also leads to a higher shift of the different conveyor belts. In this case, it turns out that a flat conveyor belts can be made to work in a different direction without being able to adapt to the transport of the conveyor belts, especially in the case of conveyor belts, without having to be moved in the opposite direction. This is not only possible by means of a conveyor belt with its side and side axles, but also by means of a conveyor belt with its side axles, which can be transported in a different direction without being damaged by the side of the conveyor belts.

It is therefore a task of the present invention to propose design improvements for a multi-stage suction conveyor of the type described at the outset which will essentially avoid the disadvantages mentioned above. US 4 298 277 A1 reveals a suction conveyor within the meaning of claim 1. US 2005/0077171 A1 reveals a suction belt for transporting sheets of paper on the way from a cutting station to a stacking station. JP 2009-234209 A reveals a suction belt for transporting paper over vaulted rolls of rolls.

The above mentioned task is solved by means of a suction conveyor for the transport of flat parts, in particular paper sheets, preferably on the way from a cutting station to a stacking station in a plant of the paper processing industry, by means of a suction system which has a suction side at which a pressure drop is generated and by means of an endlessly circulating flexible conveyor system consisting of a flexible flat material with holes and an inner side with which the conveyor system can be moved along the suction side of the suction, and by means of an outer unit for the reception of the single wires in the course of the suction side of the conveyor system, where the conveyor system moves in one direction, the output and the output of the conveyor system being defined in such a way that the transport medium is at least one direction, the width of which is defined as a single flexible conveyor system, with at least one direction of transport of the transport medium, the width of which is defined in such a way that the transport medium is at least one direction, the width of which is at least one direction, and the length of the transport medium is at least one direction, and the transport medium is at least one direction, the width of which is at least one direction, and the transport medium is at least one direction, and the transport medium is at least one direction, the width of the transport medium is defined in such a transport medium, the transport medium is at least one direction, the transport medium is at least one direction, the transport medium is at least one direction, the transport medium is at least one direction, the transportation is at least one direction, the transport medium is at least one direction, the transport medium is at least one direction, the transportation is at least one direction, the transport medium is at least one direction, the transport medium is at the same distance is at the same distance from the transportation is at the same distance from the transport medium is at the transportation is at the transportation is at the transportation is at the transportation is defined in the transportation is at the transportation is at the transportation is at the transportation is at the transportation is at the transportation is at the transport is at the transport is the transport is the transport is the transport is the transport is the transport is the transport is the

In order to avoid the disadvantages of the present state of the art, the invention now proposes that the conveyor beam arrangement be composed not as before of a number of discrete and spaced conveyor belts, but of a single flexible conveyor belt, which is also in continuous circulation but extends at least over the entire width of the conveyor belt. The invention therefore precludes the use of individual spaced conveyor belts but proposes the use of a single flexible conveyor belt in which the two sides of the conveyor belt are spaced at least as far apart as the entire width of the conveyor belt.single flexible conveyor, according to the invention, a surface reception system that extends the entire width of the conveyor for a large-format flat part that extends partly or completely the entire width of the conveyor, or for several flat parts adjacent to each other in the direction of transport, of a smaller size. This allows for a uniform and complete application of the flat parts and a load with pressure over the entire surface of the flat parts, resulting in more effective fixation on the conveyor. Furthermore, the use of a single flexible conveyor with a surface that extends the entire width of the conveyor instead of several flat parts, avoids the risk of damage to the conveyor from the side of the vehicle.The solution according to the invention thus provides a safe, stable and safe transport of flat parts. This is particularly advantageous for flat parts which, due to certain dimensions and/or materials, are particularly sensitive to friction and impact loads on their side edges and are therefore particularly susceptible to damage.

Another advantage of the solution of the invention is that it is easier to install than conventional conveyor systems, because the installation of a number of discrete conveyor belts at the state of the art is complicated and time-consuming, since the conveyor belts have to be arranged one after the other and often only at the installation site is it possible to glue the two loose ends together to form an endless conveyor belt, so that the installation of the conventional conveyor system requires a large number of assembly steps.

Preferred embodiments and refinements of the invention are set out in the dependent claims.

Thus, the only practical single-use flexible conveyor is an endlessly circulating cloth.

Preferably, the suction system and the conveyor system are also designed so that the suction side of the suction system is essentially completely covered by the drum of the single-unit flexible conveyor system in continuous circulation on the suction side.

In addition, the single unit flexible conveyor may preferably cover at least one suction opening formed on the suction side of the suction system at least substantially.

The two previously mentioned versions are possible because the conveyor arrangement according to the present invention consists not of several discrete conveyors or conveyor belts spaced apart, but of a single single flexible conveyor unit extending over the entire width of the conveyor track and thus enclosing the entire width of the conveyor track.

A further advantage of the solution of the invention is that it eliminates the need for a punch plate, which is required in the state of the art to guide the several discrete conveyor belts, but which results in increased friction.

To support the drum running along the suction side of the single flexible conveyor system in continuous rotation, it is preferable to have at least one support roller or roller with a rotating axis essentially parallel to the conveyor and transverse or angular to the direction of transport, located between the upstream inlet and the downstream outlet in the direction of transport. Preferably, at least one support roller or roller shall be arranged so that the defining drum running on the single flexible conveyor system with a transverse suction side is located on the inner side facing the at least one support roller or roller. Preventing multiple support roller or roller in a constructive way, in a direction parallel to/adjacent to each other and creating a means of facilitating the transport of support or rolls on the support roller or roller.

In order to provide additional stability to the single flexible conveyor, the means of producing an outward-facing, approximately transverse conveyor arc in the single flexible conveyor are provided at least in part within the range of action of the suction side of the suction system; the invention, in which a diversion device is provided at each of the upstream inlet and downstream outlet in the direction of transport, to divert the conveyor by a transverse transverse axis and the suction side of the suction system is located approximately transversely between these two diversion devices, is characterised by the fact that at least one of the major parts of the overall width of the main rotor of a conveyor is located in the direction of transport and is located at least in the middle of the conveyor and that the rolls are placed at an average distance from each other, and that the rotor is located at the outer edge of the conveyor, and that the rolls are placed at the same distance from each other, and that the formation is at least three rollers apart from the conveyor.

In the first case, the distance between the rotating axis and the axis of rotation of the inner rollers should be greater than that between the outer rollers, the rollers being essentially cylindrical in shape. To this end, the axis of rotation of the outer rollers may be inclined so that their distance towards the axis of rotation of the inner rollers is increased. The advantage of this variant is that ordinary cylindrical rollers, preferably of the same shape and, in particular, approximately the same radius, can be used to produce the arch.

An alternative second variant of the above-mentioned further training is characterized by the fact that the axes of rotation of the rollers are essentially offset from each other and coincide with or run parallel to the axis of rotation and the rollers are so formed that their radius increases towards the inner rollers.

Another preferred design is that it has a support which has a guide for the continuous rotation of the single flexible conveyor and is supported on both sides by a support bearing at a distance from a substrate, of the two support bearing spaced transversely in the direction of transport, a first support bearing is arranged loosely on the support bearing and a second support bearing is dimensioned so that, after the first support bearing has been removed, it holds the support bearing at least temporarily in the distance from the substrate, thus assuming the function of a one-sided support bearing, and the support bearing is designed so that the first support bearing can pull the only support bearing transversely from the direction of transport to that side of the flexible conveyor,This design provides a particularly simple way of installing the single continuous-circulation unitary flexible conveyor, used as a conveyor system according to the invention, since it must be installed on the side of the rack on which the first support is normally intended but removed for installation only, preferably over the guide bearing, and, conversely, the single continuous-circulation unitary flexible conveyor can be removed for dismantling after removal of the first support, simply by pulling it out of the side of the rack on which the first support is normally removed for dismantling.In this version, simple installation or dismantling is possible by the fact that the second support bearing is able to keep the rack floating at a distance from the ground, at least temporarily, without the first support bearing, and after the first support bearing has been removed, the way for inserting or removing the load is free on the side of the rack that is now floating above the ground at a distance.

In the case of a further development of the design discussed above, the suction system is arranged in the frame, which results in a particularly space-saving installation of the suction system.

A further design is characterised by the fact that the suction system is divided on its suction side into a number of sections, one behind the other in the direction of transport and/or adjacent to each other in the direction of transport, the suction force of which can be adjusted independently. In the case of further training, the suction system may have at least one suction box, which is divided into several chambers, one behind the other in the direction of transport and/or adjacent to each other in the direction of transport, each of which forms a section with an independent suction force. The adjustability of the suction system in sections makes it possible to adapt the suction force particularly well to the characteristics of the ventilation components to be transported and to the conditions of transport, which results in a significant reduction in the air pressure and, in particular, in the flow of air through the flat section of the exhaust system. This distribution is further subdivided into a flat distribution, which is not achieved by means of a systematic operation, which is at least uncontrollable. This is due to the fact that the stability of the operation of the suction system and its uncontrollable flow rate can be significantly reduced, in particular by the reduction of the pressure and pressure of the air flow of the air through the compartment, which the suction system is used.

In another version, a base made of granite, preferably made of a granite block or a granite plate, is provided. A base of this type forms a particularly stable and shockproof machine bed. The granite used as material has a sufficiently high specific weight to form a solid foundation due to the resulting high overall weight. In addition, granite is particularly suitable for absorbing shock and sound waves, which is an advantage for the execution of processes with particularly high precision, such as in a plant in the paper processing industry. Finally, granite is suitable for a particularly precise surface treatment, which is particularly important for the layout and especially when the precision of the individual surface is required.

Where appropriate, the base should have a substantially flat bottom for application to a substrate and a top for storage of at least one plant component or assembly such as the intake system and the conveyor system.

In order to provide a defined orientation of at least one assembly or system component and in particular its frame, on which, for example, the suction system and the conveyor system can be stored, a defined longitudinal reference surface, running essentially in the direction of transport, should be incorporated into the base. Preferably, the reference surface shall be formed on one side of the base or by a paragraph incorporated in the base. It is particularly advantageous to provide the assembly or system component and in particular its frame with at least one defined positioned attachment, and, in turn, at least two defined positioned attachments, which are either essentially in the direction of transport or in the direction of the frame. This is particularly advantageous when the assembly is carried out in a technical way, which is particularly easy to demonstrate, especially when the components are first assembled and installed in a factory, and the final assembly is easily reproduced and assembled in a precise manner.

It is preferable in a plant for the manufacture of flat parts, especially paper sheets of the paper-processing industry, and for the assembly of flat parts into stacks, especially book blocks, to have a flat part cutting station such that at least two rows of flat parts running in the direction of transport and transversely adjacent to the direction of transport are formed, and a stacking station with an intake conveyor, according to the present invention, behind the cutting station and upstream in front of the stacking station, to transport the at least two rows of flat parts from the cutting station to the stacking station.

A suction conveyor of this type is a multi-lane conveyor in which several successive conveyor tracks transport successive flat parts.

The following is a preferred embodiment of the invention, illustrated by the accompanying drawings: Fig. 1a diagrammatic side view of a book block manufacturing plantFig. 2a diagrammatic side view of the plant of Fig. 1;Fig. 3a diagrammatic side view of a suction device contained in the plant according to Figures 1 and 2 according to a preferred embodiment of the invention;Fig. 4a diagrammatic side view of the suction device of Figure 3;Fig. 5a diagrammatic side view of the plant of Figure 3;Fig. 6a diagrammatic side view of the plant of Figure 1;Fig. 3a diagrammatic side view of the suction device of Figure 3 in normal operation;Fig. 7a diagrammatic side view of a suction device contained in the plant according to Figures 1 and 2;Fig. 4a diagrammatic side view of the suction device of Figure 3;Fig. 5a diagrammatic side view of the suction device of Figure 3;Fig. 5a diagrammatic side view of a suction device contained in the plant according to Figures 1 and 2;Fig. 5a diagrammatic side view of a suction device contained in the plant according to Figures 1 and 2;Fig. 7a diagrammatic side view of a suction device contained in the plant according to a preferred embodiment of the invention;Fig. 9a diagrammatic side view of the suction device in a configuration similar to the machine (Fig. 9a) or a machine in the same configuration as in Figure 10a;Fig. 9a diagrammatic side view of a second setuploaded machine in a setuploaded machine according to the same configuration;Fig. 9a diagrammatic view of the same setuploaded machine in a setuploaded machine (Fig. 9a) and a second set in a setuploaded in a set of the same configuration;Fig. 8a diagrammatic; and 9a diagrammatic;Fig. 9a diagrammatic view of a second set in a setuploaded in a set of the same configuration of the same setuploaded machine (Figure 9a) and a setuploaded machine in a setuploaded machine in a setup in a setup in a

The system shown in Figures 1 and 2 is schematically and illustratively equipped with a 2 arc-winding system, which starts with a 4 rack on which, in the example shown, two 6/8 rolls are rotatably stored.

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It should be added that the tracks are oriented from left to right in the figures, as indicated by the A-arrow, which is the direction of transport corresponding to the process direction.

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The forward station 16 is in the direction of the track, followed by a refracting station 18 in the example shown, in which the arc track 14 is broken on both sides and thus in both directions to eliminate any undulation caused by the compression process.

In the direction of travel of the railway according to arrow A downstream, the system has a longitudinal cutting station 20 containing several adjacent and spaced together in the direction of travel of the railway, as shown schematically in Fig. 2. The cutters 22 are preferably formed as rotating circular cutters, each axis of which is oriented in the direction of travel of the railway. Furthermore, the cutters 22 are positioned transversely in each direction of travel of the curved track 14 so that the distance between two adjacent cutters 22 can be changed in order to form a single state. In longitudinal cutting station 20, the printed cutter track 14 is cut in the direction of travel of the railway according to the number of cutters 22 in a number of sections of a section of a section of a track, each section being cut in a number of widths, and the cutter track 22 is cut in the direction of travel of the railway according to the number of cutters.The variable positioning of the individual knives 22 in the direction of the track of the arc track 14 allows the distance between two adjacent knives 22 to be adjusted to the desired width of a book side, which gives a high degree of format flexibility.

In the direction of travel downstream from the longitudinal cutting station 20, a transverse cutting station 24 is located, in which the sub-tracks cut longitudinally from the previous longitudinal cutting station 20 are simultaneously cut across the conveyor in arcs, each of which forms a book block page for a book to be made from the arcs.

The cross section station 24 is arranged in the direction of the track by a cross section 26 to which is attached a belt 28 which is drawn out from the track, as shown in Figure 2. In Figures 1 and 2, the belt 26 is only very schematically shown, as are all the units and stations of the system shown in Figures 1 and 2, but is shown in detail in Figure 3 and described in more detail in Figure 3. The belt 26 is used to identify in preference low quality blades, in particular defective printing images which show a number or number of defects or irregularities in the connection, spreading or leakage block or other material, or to identify the number or number of defects or defects which are not detected in the direction of the track and which are also detected by means of a belt 26 which is designed to detect and detect the presence of a fault in the track.

In addition, a suction conveyor 30 is connected to the cross-sectional station 24 in the direction of track as described in arrow A and transports the cut arcs to or past arc bend 26 in the direction of arrow A.

The suction conveyor 30 is followed by another conveyor 31 which is intended to be an input unit for a downstream collection station 32 and is preferably equipped with means of slowing down the arcs to transmit the arcs to the collection station 32, where the slowing operation in particular leads to overlapping of the arcs.

The collection station 32 contains several adjacent compartments 34 which are shown schematically in Figure 2. These compartments 34 are bounded on each side by side walls not specified in the figures, which can be adjusted transversely to the direction of travel according to arrow A, so that the width of each compartment 34 can be adjusted to the width of the arches cut from each transport path or sub-track. Thus, the side walls of compartments 34 should be arranged in a transverse direction corresponding to the gauges 22 of the longitudinal cutting station 20 in order to ensure that the sides of the compartments 34 in the collection 32 are in the same transverse position, the corresponding number of book-blocks being taken from each transport station 20 respectively. A stack of compartments 34 is installed in each collection station 32 as a complete block of four books, which are arranged parallel to each other and which are built into the same block of 34

In the area of collection station 32 there are pin conveyors not shown in the figures, preferably one for each of the compartments 34 and 34; the purpose of the pin conveyors is to remove a stack of a completed book block from the respective compartment 34 by placing a stack of a completed book block in a clamping action between the pin conveyors' pin heads.

In addition, the diagrams 1 and 2 show a transverse conveyor 36 adjacent to the downstream side of the collection station 32 to which the blocks of paper, which are not shown in the figures, are transferred from the collection station 32 by means of the aforementioned pin conveyors. The blocks of paper are then transported by means of the transverse conveyor 36 away from the plant shown in the diagrams 1 and 2. In the example shown, the conveyor 36 is oriented in the direction of the transverse conveyor 36 across the process, as shown by the diagram B in Figure 2.

A preferred design of the suction device 30 mentioned above is described below in Figures 3 to 8.

As can be seen in particular from Figures 3 and 4, an essential feature of the conveyor 30 is that it uses a single piece of cloth 40 as the endlessly circulating flexible conveyor, perforated over its entire length and width and therefore referred to as the suction cloth. The two side edges 40a of the suction cloth 40 running in the direction of transport according to arrow A are spaced at a distance corresponding to the entire width X of the conveyor, so that the suction cloth 40 extends over the entire width X of the conveyor. The upper drum 40b of the endlessly circulating suction cloth 40 is located in the plane of the conveyor, which is therefore defined simultaneously by drum 40b of the suction cloth 40.

As can be seen in particular from Figure 4, the suction cup 40 is guided by upper rolls 42 and 44 which are rotatably mounted on a rack 46; the upper rolls 42 are located on the inlet side 30a and the outlet side 30b of the suction device 30 at the beginning and end of the upper drum 40b of the suction cup 40, so that the upper drum 40b of the suction cup 40 is formed between the upper rolls 42 in the direction of transport according to Arrow A. To move the continuously rotating suction cup 40 so that the upper drum 40 in the direction of transport according to Arrow A is parallel to the one-way exit from the 30a to the 30b side of the suction cup, a motor is provided running approximately parallel to the side of the suction cup 46 under a rotating axis, and the rotor is rotated in a direction perpendicular to the direction of transport according to Arrow 44 and the upper drum 40 is oriented at a right angle to the 40a and some of the rotors are located at the same angle as the 40a and some of the 40s.

To support the upper drum 40b of the suction cup 40, a number of supporting rolls 50 are provided, which are rotatable on the upper side of the supporting body 46 and, when viewed in the direction of transport according to arrow A, are arranged both behind and next to each other, the axes of rotation being at right angles to the direction of transport according to arrow A and parallel to the transport plane stretched by the upper drum 40b of the suction cup 40. As shown in particular in Figure 4, the supporting rolls 50 are in a common plane with their rotating axes in the example shown, giving the upper drum 40b of the suction cup 40 a straight and flat shape.Therefore, several supporting rolls 50 are provided on the X-width of the transport path, each grouped into a group, with corresponding bearings 50 between the rolls 50 (not shown in the figures). For this purpose, it is advantageous to arrange the representation of Figure 3 of the supporting rolls of one group opposite the supporting rolls of the other group in order to obtain a lability of the upper drum 40b of the suction cloth 40 between two adjacent supports 50 rolls.

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For transporting the 55 arcs, they are placed on the upper drum 40b of the suction tube 40 and are transported by the motion of the endlessly circulating suction tube 40 towards the A arrow, as shown schematically in Figure 5, which shows the same view as Figure 3, but in a slightly less detailed representation, wherein the suction tube is shown without perforation. The movement in the transport direction according to Arrow A is thus ensured by the endlessly rotating suction tube 40. The upper suction effect arising at the top 52a of the suction tube 52 creates a holding force which pushes the arcs up against the upper 40b of the suction tube 40. This results not only in the increased influence of the drum 40 under its weight, which creates a force of gravity on the bottom of the drum 40 and a force of pressure on the top 40a of the suction tube 52, but also in the increased pressure produced by the additional pressure of the suction tube 40 and the resultant pressure of the drum 40a.

The suction cloth 40 extending over the entire width X of the conveyor track and thus covering the entire width X of the conveyor track provides a flattening of the entire width X of the conveyor track not only for a large-format arc partially or substantially extending over the entire width X of the conveyor track, but also for several rows of 55 smaller-format sheets adjacent to each other across the direction of transport in accordance with arrow A, as shown in Figure 5, for example, where six rows of 40 adjacent sheets are shown on the top drum 40b of the suction cloth 55 in each direction of transport in accordance with arrow A.This allows for a uniform and complete application of the arcs and a load with pressure over the entire surface of the arcs, with the result that they are effectively fixed to the suction cloth 40, so that the suction conveyor 30 is used, as shown in the example shown in Figures 3 to 8, in the system shown in Figures 1 and 2 downstream of the cross-cutting station 24, where the sections cut longitudinally from the previous longitudinal cutting station 20 are cut simultaneously in the conveyor direction according to Pile A in arcs, so that several successive rows of arcs are cut in the conveyor direction according to Pile A,The suction cloth 40 provides a continuous surface reception over the entire X-width of the conveyor track for several adjacent arcs across the direction of transport.

The suction box 52a may be divided at its upper part, which forms the suction side, into a number of sections, in the direction of transport, in succession and/or in the direction of transport, according to arrow A, the suction force of which may be adjusted independently of each other. These sections may preferably be formed as chambers. The advantage of this design, not shown in the figures, is that the adjustability of the sections allows the suction force to be well adapted to the characteristics of the arcs to be transported, thus reducing the risk of damage and in particular of the arcs being cut.

As can be seen in particular from Figure 4 in conjunction with Figure 6, the frame 46 is supported on both sides of its transverse direction of transport according to Arrow A and thus in the direction of width X by supporting legs 56, 58 on a base plate 60.designed so that, after the first support leg 56 has been removed, it holds the rack 46 at least temporarily at a distance from the base plate 60, thus assuming the function of a one-sided support, as shown in Figure 7. In this condition, as shown in Figure 7, the suction cloth 40 can be drawn across the direction of transport according to arrow A or in the direction of width X of the conveyor rail from the rack 46 to the side on which, in normal condition, the first support leg 56 is provided and is now temporarily removed, as shown in Figure 6.that, after removing the first support foot 56, the endlessly circulating suction cloth 40 can be easily removed from the above-mentioned rolls 42, 44, 50 and removed from the rack 46 and, conversely, can also be easily inserted into the rack 46 and drawn over the above-mentioned rolls 42, 44, 50. Accordingly, the design of the suction device 30 according to the illustration shows that the suction cloth 40 can be easily assembled in an already endless configuration, so that a suction cloth 40 already glued to the factory side with both ends in an endless configuration can be used for the assembly.In this respect, it should be added that, for the sake of clarity, the suction cloth 40 is shown without perforation in Figures 6 and 7.

To give the continuous-circulating suction cloth 40 additional stability, it is fitted with a slight upward curve at the rolls 42 which is designed and arranged accordingly, with two configurations shown in Figure 8. As shown in Figure 8, the rolls shown there are cylindrical in shape and have essentially the same dimensions. It is also shown in Figure 8 that a number of rolls are grouped together in a common rolling arrangement, preferably at the inlet side 30a and/or the outlet side 30 of the suction conveyor 30; in each rolling arrangement, several rolls are grouped together in front of each other, and the other two are arranged in front of each other.The outer 42o rolls, which are adjacent to the side edges 40a of the endless rolling fabric 40b, and the inner 42i rolls, respectively, are grouped together in a group. Accordingly, both configurations shown in Fig. 8 show that the distance from a virtual inversion axis 42a is greater in the group of inner 42i rolls than in the two groups of outer 42i rolls.In contrast, in the configuration shown in Fig. 8b, the rollers of each group are arranged axially with respect to each other, so that the axes of rotation of each group are on a common straight line or axis.

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Furthermore, Figures 9 and 11 show that a paragraph 64 is embedded along a longitudinal side of machine bed 62; this paragraph forms a longitudinally defined reference surface 64, whereby the machine bed 62 is preferably aligned so that the paragraph forming the reference surface 64 runs in the process or transport direction of the plant shown in Figures 1 and 2 in accordance with arrow A. The reference surface 64 serves as a fixation for attachments 66, which are arranged at the bottom of the base plate 60, as shown in Figures 10 and 11. According to Figures 11, two installed positions 66 are preferably repeated. The attachments 66 are arranged at the base plate 60 in such a way that the base plate 60 is defined in the process or transport direction, in particular in Figures 1 and 2.

Claims (14)

1. Suction conveyor (30) for transporting flat parts (55), specifically sheets of paper, preferably on the way from a cutting station (20, 24) to a stacking station (32) in a plant of the paper-processing industry, with a suction arrangement (52) comprising a suction side (52a), on which a low pressure is created, and an endlessly rotating, flexible conveyor arrangement consisting of flexible flat material furnished with holes and comprising an inner side, with which the conveyor arrangement on the suction side (52a) of the suction arrangement (52) can be moved along, and an external side to receive the flat parts (55) in the operating area of the suction side (52a) of the suction arrangement (52), where the conveyor arrangement moves in the direction of transport (A), wherein the suction arrangement (52) and the conveyor arrangement are formed such that at least one conveyor track with a width (X) transverse to the direction of transport (A) is defined in the operating area of the suction side (52a) of the suction arrangement (52), wherein the conveyor arrangement is formed by an endlessly rotating, single, one-piece, flexible conveyor (40), whose two side margins (40a) both running in the direction of transport (A) have a distance from each other that is at least as large as the entire width (X) of the conveyor track, such that the single, one-piece, flexible conveyor (40) extends at least over the entire width (X) of the conveyor track, with whose suction conveyor (30) a deflection means (42) to deflect the conveyor arrangement around a deflection axis (42a) is provided respectively at an inlet side (30a) being positioned upstream and viewed in the direction of transport (A) and at an outlet side (30b) being positioned downstream and the suction side (52a) of the suction arrangement (52) is located between these two deflection means (42), characterised by means to produce a curvature being directed towards the external side and running approximately transverse to the direction of transport (A) in the single, one-piece flexible conveyor (40) at least in sections in the operating area of the suction side (52a) of the suction arrangement (52), wherein at least one deflection means comprises a multitude of rolls (42-i, 42-o) running next to one another across the entire width (X) of the conveyor track and substantially transverse to the direction of transport (A) and forming the means to produce the curvature with a rotary axis running transversely or angularly to the direction of transport, wherein the arrangement and formation of the rolls (42-i, 42-o) is made such that the interval at least of one circumferential section of the deflection axis (42-a) of the exterior rolls (42-o) is less than of the interior rolls (42-i).
2. Device according to claim 1, characterized in that the single, one-piece flexible conveyor (40) comprises an endlessly rotating cloth.
3. Device according to claim 1 or 2, characterized in that the suction arrangement (52) and the conveyor arrangement are formed such that the suction side (52a) of the suction arrangement (52) is substantially completely covered by the single, one-piece flexible conveyor (40).
4. Device according to at least one of the preceding claims, with which the suction side (52a) of the suction arrangement (52) comprises at least one suction opening, characterised in that the single, one-piece flexible conveyor (40) at least substantially completely covers the at least one suction opening.
5. Device according to claim 1, characterised in that the distance of the rotary axis to the deflection axis (42-a) of the interior rolls (42-i) is greater than of the exterior rolls (42-o), wherein the rolls (42-i, 42-o) have a substantially cylindrical form.
6. Device according to claim 5, characterised in that the rotary axes of the exterior rolls (42-o) are inclined towards the deflection axis (42-a) such that its distance is enlarged in the direction of the interior rolls (42-i).
7. Device according to claim 5 or 6, characterised in that the rolls (42-i, 42-o) have approximately the same radius.
8. Device according to claim 1, characterised in that the rotary axes of the rolls (42-i, 42-o) substantially align with each other and coincide with the deflection axis (42-a) or run in parallel to this and the rolls (42-i, 42-o) are formed such that their radius is enlarged towards the interior rolls (42-i).
9. Device according to claim 8, characterised in that the exterior rolls (42-o) have a conical form and the interior rolls (42-i) have an approximately cylindrical form.
10. Device according to at least one of the preceding claims, characterised in that a frame (46) is provided, comprises the guides (42, 44) for guiding in an endlessly rotating manner the single, one-piece flexible conveyor (40) and can be supported on both sides by a support bearing (56, 58) at a distance from a base, of the two support bearings (56, 58) being arranged at a distance from one another transversely to the direction of transport (A) a first support bearing (56) is detachably arranged on the casing (46) and a second support bearing (58) is dimensioned such that it supports at least temporarily the casing (46) at a distance from the base after the removal of the first support bearing (56) and thus undertakes the function of a one-sided support bearing, and the casing (46) is formed such that after the removal of the first support bearing (56) the sole, one-pieced flexible conveyor can be removed transverse to the direction of transport (A) from the cashing (46) on the side, on which the first support bearing (56) is positioned.
11. Device according to claim 10, characterised in that the suction arrangement (52) is arranged in the frame (46).
12. Device according to claim 11, characterised in that the frame (46) forms a housing for the suction arrangement (52).
13. Device according to at least one of the preceding claims, characterised in that the external side of the single, one-piece flexible conveyor (40) forms its upper side, on which the flat parts (55) can be applied.
14. Plant to produce flat parts (55), specifically sheets of paper or similar of the paper-processing industry, and to collect the flat parts (55) for stacking, specifically bodies of books, with a cutting station (20, 24) for cutting flat parts such that at least two rows of adjacent flat parts (55) running in the direction of transport (A) and transverse to the direction of transport (A) are formed, and a stacking station (32), characterised in that a device (30) according to at least one of the preceding claims is arranged downstream behind the cutting station (20, 24) and upstream in front of the stacking station (32) in order to transport at least two adjacent rows of flat parts (55) from the cutting station (20, 24) to the stacking station (32).