WO2011036231A1

WO2011036231A1 - Friction feeder for a packaging system and setting fixture for a friction feeder

Info

Publication number: WO2011036231A1
Application number: PCT/EP2010/064089
Authority: WO
Inventors: Winfried Fortenbach; Patrick Hermann; Norbert Muench; Johannes Ersing
Original assignee: Koera-Packmat Maschinenbau Gmbh
Priority date: 2009-09-23
Filing date: 2010-09-23
Publication date: 2011-03-31
Also published as: WO2011036231A8; EP2467323A1; WO2011036231A9; DE102009042469B3; EP2467323B1

Abstract

The invention relates to a friction feeder (10) for singulating flat products (18), the products (18) particularly being in the form of paper, cardboard, or a multi-sided printed material, the friction feeder (10) having a frame (14) having an outlet region (20) having a feed direction (28), having a singulating region (55) comprising a first friction element (22) and a second friction element (24), and having a transport region (56) comprising a first transport element (50) and a second transport element (52), wherein the first and the second friction elements (22, 24) are spaced apart from each other by a first distance (d1) and disposed at a singulating location (57) and implemented such that one product (18) from a plurality of products (18) is captured by friction action from a magazine (16) at a lower end (26) of the magazine (16) and is fed between the first and the second friction elements in the feed direction (28) in the direction of the outlet region (20), wherein the first and the second transport elements (50, 52) are spaced apart from each other by a second distance (d2) at a transfer location (58) and are disposed and implemented such that a product (18) transferred in the direction of the outlet region (20) between the first and the second friction elements (22, 24) is received and is transferred to the outlet region (20), and wherein the first friction elements (22) and the first transport element are disposed on a setting fixture (30), wherein the setting fixture (30) is displaceably disposed relative to the frame (14) along an adjusting direction (32) perpendicular to the feed direction (28), so that a displacement of the setting fixture (30) changes both the first distance (d1) and the second distance (d2).

Description

Friction feeder and adjusting plate for a friction feeder

The invention relates to a friction feeder for separating flat products, the products in particular in the manner of a paper, a cardboard or a multi-page printing unit, the friction feeder with a frame, with a discharge area, with a conveying direction, with a separating region, a first friction element and a second friction element, and having a transport region having a first transport element and a second transport element, wherein the first and the second friction element at a separation point by a first distance from each other and are arranged and configured for such, formed from a plurality of products From a magazine by friction effect at a lower end of the magazine to take a product and between the first and the second friction element to be transferred in the conveying direction in the direction of the outlet region, and wherein the first and the second transport element are spaced at a transfer point by a second distance from each other and arranged and adapted for, one between the first and the second friction element in the direction take over the product transferred to the outlet area and transfer it to the outlet area.

A friction feeder of the aforementioned type is known from US 6,416,047.

In modern packaging systems, friction feeders are an important component. They make it possible to selectively remove a workpiece from a large number of workpieces, in particular essentially flat workpieces, and feed it to a subsequent processing or packaging process. In general, the workpieces are inserted as a stack in a magazine of Reibanlegers. During singulation, the lowermost workpiece in the stack contacts a first and a second friction element and is removed from the stack. Thereafter, the separated workpiece is typically transferred by means of a transport device in a discharge area, from where the further processing or confectioning takes place. For example, the workpiece can be printed, pasted, packaged or welded.

The aforementioned US 6,416,047 shows such a friction feeder, which is also referred to as a friction feeder. This document shows the basic principle of a friction feeder and illustrates clearly how from a stack of paper by means of a first friction element, here a friction roller or stripper, and a second friction element, here a friction belt or friction conveyor belt, the lowest lying workpiece singled and in a Auswerfbereich or outlet area can be transferred.

From US 5,244,197 another Reibanleger for paper sheets is known. This friction feeder also works according to the principle described above. The peculiarity of the Reibanlegers shown here is that by means of a Vorvereinzelungswalze pre-singling takes place in interaction with a lifting finger before the workpiece reaches the actual separating roller or friction roller.

One of the most modern friction feeders available on the market today is the LB-2 grinder from KÖRA-PACKMAT Maschinenbau GmbH, Villingendorf, Germany, which can singulate or count up to 1,200 products per minute. Among the processable products include u.a. Printed matter, envelopes, wrapped CDs, covers and leaflets, DVD boxes, books, booklets, etc.

So that the products can be reliably removed from the stack at such a high clock rate and speed and can be conveyed without interference in the direction of the outlet area, an exact positioning of the first friction element and the second friction element both relative to one another and relative to the magazine is required. In particular, the first distance between the first and the second friction element has to be set precisely, since a too small first distance causes a product to jam between the first and the second friction element, whereas an excessively large first distance leads to two Products are retracted simultaneously and then jammed together between the first and the second friction element.

It is an object of the present invention to provide an improved friction feeder, which in particular offers a shorter set-up time with regard to the adjustment of the first and the second friction element. Furthermore, an improved friction belt guide and an improved stacking shoe to be shown.

The object is achieved with a friction feeder according to the invention of the type mentioned above in that the first friction element and the first transport element are arranged on an adjusting plate, wherein the adjusting plate is arranged displaceable along an adjustment transverse to the conveying direction relative to the frame, so that a displacement of the adjusting plate changed both the first distance and the second distance. A special feature of the structure proposed here is that both the first friction element and the first transport element are arranged on a common displacement plate, which is displaceable to the second friction element and the second transport element. If the displacement plate is displaced in order to adjust the first friction element for a specific product, that is to say in order to set the first distance, then the first transport element moves with it. This also sets the second distance at the same time.

If the first transport element not only consists of a roller, but for example as a belt, which is guided over two rollers, executed, it is not necessary that the entire transport element is arranged with all components on the adjustment plate. Rather, it is sufficient if the sub-element of the transport element is arranged on the adjusting plate, which determines the second distance between the first and the second transport element at the transfer point.

Of the many advantages that this structure offers, will be discussed in particular on the following: Because the first friction element and first transport element are arranged on the adjustment plate, it is only necessary to set the first distance. The setting of the positions of the first transport element and the first friction element to each other can already be set from the factory. The second distance does not need to be adjusted by the user during operation because it also adjusts to the setting of the first distance by the user.

If at a later time the first and the second friction element are to be repositioned relative to one another, that is to say the first distance is readjusted, then this adjustment can be effected simply and quickly by displacing the adjustment plate. Since a separate adjustment of the second distance is not required, eliminates the considerable set-up times in connection with the adjustment or adjustment of the Reibanlegers when the first distance must be changed. The term "flat product" should be understood in particular printed matter, envelopes, packaged CDs, covers and leaflets, DVD boxes, books, booklets. However, the principle of a friction feeder proposed here can also be used in particular for friction feeders for products of any other type.

Under the formulation that the adjustment direction is "transversely" directed to the conveying direction, should be understood in particular that the angle between the adjustment and the conveying direction between 30 ° and 150 °, preferably between 60 ° and 120 ° and more preferably between 85 ° and 95 °. It is particularly preferred if this angle is at least about 90 °.

In the context of this application, the term "separation point" is intended to designate the region of the friction feeder in which, in concrete terms, the removal of a product from a stack of products takes place, in particular by detecting a product at the lowest level and by holding overlying products. In the context of this application, the term "transfer point" is intended to designate the area of the friction feeder in which an isolated product is transferred from the separating area into the transport area.

This completes the task.

In a preferred embodiment of the invention, during the displacement of the adjusting plate, the first friction element and the first transport element are displaced parallel to one another and along an equally long path.

This embodiment is structurally easy to implement and makes it possible that the displacement of the displacement of the first distance and the second distance are changed by an equal value. This can be realized particularly advantageous in that the first friction element and the first transport element are arranged on the adjusting plate, that they during normal operation - based on the Adjustment plate - are stationary. However, this excludes additional adjustment options, whether it is ex works or by service technicians but not.

In a further advantageous embodiment of the invention, at least one element selected from a group consisting of a magazine, a double sheet control device and a spacer plate is connected to the adjustment plate in such a way that the displacement of the adjustment plate leads to an equal displacement of the at least one element.

This embodiment is advantageous because the at least one element is displaced together with the first friction element and the first transport element. While it was still necessary in the prior art to adjust the at least one element separately after a change of the first distance, the at least one element moves automatically in this embodiment in the required position. In this case, the at least one element can be arranged directly on the adjusting plate. Preferably, however, it is arranged on a structure which is arranged on the adjusting plate. Preferably, at least two of said elements are connected to the adjustment plate. Particularly preferably, all three elements are connected to the adjustment plate and displace with the adjustment plate.

In a further advantageous embodiment of the invention, the friction feeder on a magazine for flat products, wherein the magazine is held on a cross member which is held in the adjustment plate.

This embodiment is particularly advantageous because the magazine then moves together with the displacement and thus can be ensured that the magazine is correctly positioned with respect to the first distance.

In a further advantageous embodiment of the invention, the second friction element and / or the second transport element are arranged stationarily on the frame. In principle, it is also possible to displaceably arrange the second friction element and / or the second transport element in order to provide certain adjustment possibilities. However, it is considered to be particularly advantageous that the invention makes it possible to arrange the second friction element and / or the second transport element stationary on the frame and so to simplify the structural design. While other state-of-the-art friction feeders relied on adjustability of all rolls, this is no longer required according to the invention. In particular, when the second friction element and the second transport element are arranged stationary on the frame, the adjustment of the friction feeder with respect to a particular product is particularly easy to implement.

In a further advantageous embodiment of the invention, the adjusting plate has a recess in which a holder for the first friction element or for the first transport element is arranged displaceable such that the holder transversely displaced to the conveying direction within the recess and resting the adjustment plate of the first distance while maintaining the second distance, or vice versa, can be changed.

In particular, this embodiment offers the possibility of performing an adjustment of the friction feeder ex works or by a service technician. If one considers the position of the first friction element and the first transport element relative to the adjustment direction, the two components can be displaced relative to each other in this embodiment. Such a setting is usually made once at the factory and repeated only under certain conditions.

In normal operation, it is not necessary for the user to displace the holder within the recess. In principle, it is possible to provide a separate holder both for the first friction element and for the first transport element. However, it is currently regarded as advantageous and sufficient within the scope of a constructive simplification to provide the adjustment possibility with regard to the first transport element, ie the first transport element is preferably arranged on the holder, the first friction element directly on the adjustment plate. In a further advantageous embodiment of the invention, an adjusting spindle is held with a first end in the holder and with a second end in an adjusting device, so that upon actuation of the adjusting device, the holder is displaced within the recess.

This embodiment allows a particularly accurate positioning of the holder within the recess and thus a particularly good positioning of the first transport element relative to the first friction element with respect to the adjustment. Since the adjustment device does not have to be actuated by the user in normal operation, it is advantageous to execute the adjusting spindle and the adjusting device as a whole, with the screw head resting against the adjusting plate and the screw thread engaging in the holder.

In a further advantageous embodiment of the invention, an adjusting spindle cooperates with a first end of the adjusting plate and is held with a second end in an adjusting device on the frame, so that upon actuation of the adjusting device, the adjusting plate is displaced relative to the frame.

This embodiment allows a particularly precise adjustment, especially when a thread formed on the adjusting spindle is designed with a small pitch. The adjusting device is preferably designed as a knurling wheel and is particularly preferably provided with a micrometer display.

In a further advantageous embodiment of the invention, the first friction element is designed as a friction roller and / or the second friction element has a friction belt, which is guided in particular via two deflection rollers.

This embodiment is particularly advantageous because the friction belt offers a large attack surface compared to the lowest product and thereby the product can be taken very well. The friction roller serves in the manner described above as Brake for products above the lowest product. Advantageously, at least one of the deflection rollers is driven and thus simultaneously represents a drive roller.

In a further advantageous embodiment of the invention, the adjusting plate is guided along a guide rail.

This embodiment allows a particularly exact adjustability and a particularly good reproducibility of previous settings. Advantageously, the displacement of the adjusting plate takes place by means of the aforementioned setting spindle.

In a further advantageous embodiment of the invention, which taken on its own and without the use of the above adjustment plate is an inventive development of the prior art, the second friction element on a friction belt, along with the entire conveyor line with each section of the friction belt at most a roller of the Reibanlegers in contact.

This embodiment enables an improvement of the friction belt guide, which is guided in particular around a first deflection roller and a second deflection roller. In the context of this invention, the Applicant has recognized that it can be disadvantageous if the friction belt is passed between two rollers, so that at least a portion of the friction belt is in contact with two rollers simultaneously.

This constellation can lead to an overdetermined system, for example when the one roller on one side of the friction belt moves at a different speed than the other roller on the other side of the friction belt. Furthermore, it can lead to the fact that the friction belt is rolled and thereby escapes to the outside and forms a bead there by the pressure of the two rollers against each other. The fact that the friction belt now along its entire conveyor line - the return path should preferably, but does not have to meet the condition - With each part or at each point of the belt part with at most one roller in contact, the friction belt handling is considerably improved.

It should be noted that the general term "role" is intended to mean any substantially stationary roller or roller, including in particular feed rollers, drive rollers, guide rollers, separating rollers, Vorvereinzelungswalzen, stripping rollers and friction rollers.

For the theoretical consideration of the embodiments proposed here, the section is infinitesimally small. In the context of practical application, the considered section of the sub-belt, which may have at most one roller, at least one tenth of the radius of the first friction element, preferably at least one fifth of this radius, more preferably at least half of this radius and is in particular at least as large as the radius of the first friction element.

In a further advantageous embodiment of the invention, a counter element with a bearing surface is arranged opposite the first friction element, wherein a friction belt is guided supported on the support surface, so that the product is passed between the first friction element and the friction belt and thereby emanating from the first friction element pressure is received against the friction belt from the counter element.

This embodiment makes it possible to continue to ensure the separation of the products, even if the friction belt is always in contact with a role at most. In experiments it has been found that it is advantageous if the friction belt is supported on one side by a flat bearing surface, since then from the first friction element, in particular a friction roller, a sufficiently large pressure can be exerted sufficient to ensure the separation and simultaneously due to the support of the friction belt does not cause the above-mentioned disadvantages when the friction belt has to pass between two rollers. In a further advantageous embodiment of the invention, which also taken on its own and without the use of the above adjustment plate is an inventive development of the prior art, the investor has a stacking shoe, which has a stacking plate, for an angular adjustment of a curved first guide track and is held displaceably on a curved, parallel to the first guide track, the second guide track.

This embodiment allows a particularly accurate and a particularly well reproducible angle adjustment of the stacking plate. The general function of a stacking sheet is to ensure that the products in the magazine are properly positioned the closer they approach the bottom of the stack or magazine. The first guide track is preferably designed as a groove in the form of a circular arc, in particular in the form of a quarter-circle arc, in which a guide pin runs. Accordingly, the second guideway can be executed.

However, it is advantageous if the second guide track is designed as a stop, on which a correspondingly curved end face passes. This results in a particularly advantageous guidance of the stacking plate. Alternatively, or in combination, two and in particular three guideways can be designed in the form of a groove. This causes an exact guidance.

In a further advantageous embodiment of the invention, which also taken on its own and without the use of the above adjustment plate is an inventive development of the prior art, the investor has a stacking shoe with an adjusting element for adjusting the position of a stacking plate, wherein the adjusting element is an adjusting spindle has, at its first end a clamping element and at its second end an actuating element, wherein the clamping element displaces upon actuation of the actuating element in a direction along the longitudinal extension of the adjusting spindle. This embodiment enables a particularly exact positioning and reproducibility of certain settings of the stacking plate.

In an advantageous embodiment of the invention, the clamping element is designed as a clamping block, which is arranged in a profile with a rear handle and presses the actuation of the adjusting spindle via the actuating element the clamping block against the profile, so as to achieve a clamping action between the clamping block and profile.

This embodiment is particularly robust and allows in the clamping position a particularly tight fit. In addition, the profile can be closed.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Embodiments of the invention are illustrated in more detail in the drawing and are explained in more detail in the following description. Show it:

Figure 1 shows a first embodiment of a Reibanlegers;

Figure 2 is a greatly simplified schematic representation of the Reibanlegers of Figure 1 with the first embodiment of an adjustment;

FIG. 3 shows a detail of a detailed view of the friction feeder according to FIG. 1 with a second embodiment of an adjustment plate;

Figure 4 is a perspective view of the adjusting plate according to Figure 3 am

Framework of the investor; FIG. 5 shows a rotated section from FIG. 2;

FIG. 6 shows a second embodiment of a friction feeder;

FIG. 7 shows a stacking shoe; and

FIG. 8 shows the stacking shoe according to FIG. 7 in a combined view of FIG

Front side and from the long side.

Fig. 1 shows a friction feeder 10 for a packaging system 12, wherein the packaging system 12 is indicated here only schematically with a conveyor belt. The friction feeder has a frame 14, two adjusting spindles 15, a flat product magazine 16 (see Fig. 2). The products 18 are in particular in the manner of a paper, a cardboard or a multi-page printing unit.

The friction feeder 10 has an outlet region 18, which is here directed onto the conveyor belt of the packaging installation 12. The adjusting spindles 15 serve to adjust the friction feeder for a particular product. This will be explained in more detail below. The Traverse 17 is used to attach attachments, in particular the attachment of the magazine 16th

2, which shows a greatly simplified illustration of the friction feeder 10 from FIG. 1, it can also be seen that the friction feeder 10 has a first friction element 22 and a second friction element 24, wherein the first and the second friction elements 22, 24 are spaced apart by a first distance dl (see FIG. 3). The first friction member 22 and the second friction member 24 are arranged and adapted to grasp a product 18 from a plurality of products 18 in the magazine 16 by frictional action at the lower end 26 of the magazine 16 and between the first and second Frictional element 22, 24 to pass in a conveying direction 28 in the direction of the outlet region 20. In this way, there is a separation of the products 18 from the magazine 16. The first friction element 22 and the first transport element 50 are arranged on an adjustment plate 30, wherein the adjustment plate 30 is arranged displaceable along an adjustment direction 32 transversely to the conveying direction 28 relative to the frame 14, so that a displacement of the displacement plate 30 to a common displacement of the first friction element 22 and the first transport element 50, that leads to a common change of the first distance dl and the second distance d2.

Although it is understood by those skilled in the art of friction, it should be noted that the first friction element 22 and the first transport element 50 are arranged transversely to the conveying direction on one side on an adjustment plate 30 with respect to a transverse direction. In other words, the first friction element 22 and the first transport element 50 are held on both sides, with respect to the transverse direction, by a respective adjusting plate 30. Each one adjusting plate 30 is here associated with one of the adjusting spindles 15 or mechanically connected to it. Thereby, the first friction member 22 and the first transport member 50 can be uniformly adjusted by both adjusting spindles 15 are rotated or adjusted uniformly. The friction feeder 10 accordingly has two displacement plates 30.

The first friction element 22 is designed such that it rests at least when grasping or grasping the product 18. The second friction element 24 is configured such that it moves in a region 34 facing the product 18 with the conveying direction 28. In this embodiment, the first friction element 22 is designed as a friction roller and the second friction element 24 has a friction belt 36, which is guided over a first deflection roller 38 and a second deflection roller 40.

Finally, in Fig. 2 also a conventional spacer plate 42 and a double-sheet control device 43 are shown. The spacer plate 42 ensures that the products 18 in the stack do not come into contact with the first friction element 22 too early. The double-sheet control device 43 checks whether the singulation process has been successful, ie whether exactly one product 18 has been singulated. Since the operation of a Reibanlegers is known in principle, it will be discussed briefly. Starting from the magazine 16, a product is first detected by the friction belt 36, wherein products 18, which are above the lowermost product 18, are retained by the first friction element 22, here a friction roller. The product 18 is guided out of the separating region 55 between the first friction element and the friction belt 36 in the direction of a transport region 56, which has the two transport elements 50, 52.

The transport element 50 here has a first transport roller 60, an upper belt 62 and a third deflection roller 64. The second transport element 52 has a second transport roller 66, a lower belt 68 and a fourth deflection roller 70. The product 18 is continued by the transport region 56 in the direction of the outlet region 20 and released there.

Fig. 3 shows a detailed view of an adjusting plate 30 of a Reibanlegers 10 in plan view. It applies all versions that have been made in connection with the previous figures.

In the illustration shown here, not only the adjustment plate 30 but also the separating region 55 and the transport region 56 of the friction feeder 10 can be seen. In addition, the separation point 57 and the transfer point 58 can be seen. From the first transport element 50 and the second transport element 52, only the central axis 60 'of the first transport roller 60 and the center axis 66' of the second transport roller 66 are shown here. The separating region 55 has a first friction element 22, of which only the central axis 22 'is shown, and also a second friction element 24, of which only the central axis 38' of the first deflection roller 38 is shown.

The distance between the first friction element 22 and the second friction element 24 at the separation point 57, that is, the distance between the central axis 22 'of the first friction element 22 and the central axis 38' of the first guide roller 38 as be designated first distance dl. The distance between the first transport element 50 and the second transport element 52 at the transfer point 58, ie, the distance between the central axis 60 'of the first transport roller 60 and the central axis 66' of the second transport roller 66 should be referred to as the second distance d2. In embodiments in which the first and second transport elements 50, 52 and the first and second friction elements 22, 24 are not directly opposite one another - with respect to the conveying direction 28 - the distances d1 and d2 should be measured parallel to the direction of displacement 32, in this case perpendicular to Conveying direction 28.

The adjusting plate 30 is guided along two guide rails 54. The adjustment of the adjusting plate 30 is achieved as follows. On the adjusting plate 30, a threaded block 31 is arranged, in which an adjusting spindle 33 engages with its first end 35. With its second end 37, the adjusting spindle 33 is held in an adjusting device 39 on the frame 14. Upon actuation of the adjusting device 39, the adjusting plate 30 is displaced relative to the frame 14 in the adjustment direction 32. It can be seen that in this embodiment the first distance d1 and the second distance d2 are changed by the same value.

In the region of the separation point 57, the second friction element 24, in this case, in concrete terms, its first deflection roller 38, is arranged stationarily on the frame 14. The second transport element 52, in this case its second transport roller 66, is stationarily arranged on the frame 14. This results in a structurally simplified structure. The adjusting plate 30 has a recess 72 in which a holder 74 for the first transport element 52, here specifically its first transport roller 50, is arranged displaceable such that the holder 74 can be displaced transversely to the conveying direction 28 within the recess 72.

To make the displacement, an adjusting spindle 88 is arranged with a first end 90 in the holder 74. The second end 92 of the adjusting spindle 88 is held in an adjusting device 94. The adjusting spindle 88 and the adjusting device 94 are designed here as a screw. Upon actuation of the adjusting device 94, that is, when the screw is rotated, the holder 74 is displaced within the recess 72.

The adjustment of the first transport element 50 is usually made ex works and must not be changed during normal operation. The user operates here only the setting device 39 to set a desired first distance dl. Due to the structural design proposed here, the second distance d2 automatically adjusts itself.

In the embodiment shown here, see also FIG. 2, both the magazine 16, the double sheet control device 43 and the spacer plate 42 are connected to the adjustment plate such that the displacement of the adjustment plate 30 leads to an equal displacement of these elements. As a result, the required setup time can be shortened considerably. The magazine 16 for flat products 18 is held in particular on the traverse 17, wherein the traverse 17 is in turn held in the adjustment plate 30.

Fig. 4 shows a partial perspective view of FIG. 3. It should therefore be made to all previously made explanations.

It should be noted, however, that the shafts 22 ", 38", 60 ", 66" for the first friction element 22, the first deflection roller 38, the first transport roller 60 and the second transport roller 66 are shown only cut away. Furthermore, the position of the cross member 17 is shown here, which sits in the recess 89, wherein the cross member 17 is shown cut off.

Fig. 5 shows once again in an enlarged and rotated representation of the separating region 55 and the transport region 56 of the Reibanlegers 10. In addition, here a stacking shoe 110 is indicated, will be discussed in more detail later and from here only the stacking plate 112 and a pivot member 114th are shown. The intermediate belts between the first friction element 22 and the first transport roller 60 and between the first guide roller 38 and the second transport roller 66 are not shown for the sake of clarity. The adjusting plate 30 is indicated by a dashed line.

6 shows a second exemplary embodiment of a friction feeder 10, wherein only the separating region 55 and the transport region 56 are shown schematically here. The adjusting plate 30 is in turn indicated by the dashed line. The intermediate belt are not shown here.

In this embodiment, a novel arrangement of the rollers 22, 36, 38, 60, 66 of the Reibanlegers 10 is shown. Here, the second friction element 24 has a friction belt 36 which is in contact with at least one roller 22, 36, 38 along the entire conveying path 104 with each section of the friction belt 36. This allows a particularly advantageous guidance of the friction belt 36.

In order to further enable a reliable separation, a counter-element 106 is arranged with a support surface 108 relative to the first friction element 22, wherein the friction belt 36 is guided supported on the support surface 108. In this embodiment, the product 18 is passed between the first friction member 22 and the friction belt 36. In this case, an outgoing from the first friction element 22 pressure against the friction belt 36 is received by the counter element 106.

Also in this embodiment, at least the first friction element 22 and the second friction element 24 are arranged on the common displacement plate 30, preferably additionally the first transport element 50 and the second transport element 56 and particularly preferably additionally the counter element 106.

FIG. 7 shows a three-dimensional, perspective view of a stacking shoe 110 for a friction feeder 10. The stacking shoe 110 consists essentially of one Stacking plate 112, a pivot member 114 having an end face 116, a pivot plate holder 118, a high profile 120 and a longitudinal profile 122nd

The fixing of the stacking plate 112 and the pivoting part 114 relative to the stacking plate holder 118 is controlled via the actuating element 124. The fixation of the stacking plate holder 118 relative to the high profile 120 is controlled by the actuator 126. The fixation of the high profile 120 relative to the longitudinal profile 122 is controlled by the actuator 128. The fixation of the longitudinal profile 122 relative to the friction feeder 110 is controlled by means of the actuating element 130. The actuators 124, 126, 128, 130 are each designed here as knurled wheels.

FIG. 8 again shows stacking shoe 110 according to FIG. 7, this time in a combined representation of a plan view of the front side and a shortened plan view of the longitudinal side. It can be seen particularly well here that the stacking plate 112 is held displaceable together with the pivoting part 114 for an angular adjustment on at least one curved first guide track 132 and on a curved second guide track 134 parallel to the first guide track 132.

In addition, further guideways 132 'and 132 "ensure particularly precise guidance The guideways 132, 132', 132" are designed as grooves, in each of which corresponding guide pins 136 run. The end face 116 of the pivoting part 114 bears against the second guide track 134, wherein the second guide track 134 represents a stop for the end face 116.

The stacking shoe 110 shown here has various adjustment options. It is now merely an example of the adjustment of the high profile 120 relative to the longitudinal profile 122 will be discussed. For this adjustment, the stacking shoe 110 has an adjusting element 140. For the sake of completeness, the adjusting element 142 in the longitudinal profile 122 is also shown. The adjusting element 140 serves to adjust the position of the stacking plate 112 along the direction of the longitudinal profile 122. In this case, the adjusting element 140 has an adjusting spindle 144 which has a clamping element 148 at its first end 146 and the actuating element 128 at its second end 150. Upon actuation of the actuating element 128, the clamping element 148 displaces in a direction along a longitudinal extent of the adjusting spindle 144. Accordingly, the adjusting element 142 has a further adjusting spindle 152, a clamping element 154 and an actuating element 130.

As can be seen particularly well in the plan view of the end face, the clamping element 148 is designed as a clamping block, which is arranged in the longitudinal profile 122, wherein the profile 122 has a rear handle. The actuation of the adjusting spindle 144 via the actuating element 128, which presses the clamping block against the profile 122 so as to achieve a clamping action between clamping block and profile 122.

Thus, this novel stacking shoe 110 achieves both an exact adjustment of the angle of the stacking plate 112 and an exact and easily reproducible adjustment of the stacking plate 112 in a vertical direction and in a longitudinal direction.

Claims

claims

1. friction feeder (10) for singulating flat products (18), the products (18) in particular in the manner of a paper, a cardboard or a multi-page printing unit, the friction feeder (10) with a frame (14), an outlet region (20) and a conveying direction (28),

a separating region (55) having a first friction element (22) and a second friction element (24), and

a transport area (56) having a first transport element (50) and a second transport element (52),

wherein the first and second friction members (22, 24) are spaced from one another at a separation point (57) by a first distance (dl) and are adapted to be formed from a plurality of products (18) from a magazine (16 ) by frictional action at a lower end (26) of the magazine (16) to take a product (18) and to transfer between the first and the second friction element in the conveying direction (28) in the direction of the outlet region (20), and

wherein the first and second transport members (50, 52) are spaced apart from one another at a transfer location (58) a second distance (d2) and are arranged to engage between the first and second friction members (22, 24). take over in the direction of the outlet region (20) transferred product (18) and to transfer into the outlet region (20),

characterized in that the first friction element (22) and the first transport element (50) are arranged on an adjustment plate (30), wherein the adjustment plate (30) along an adjustment direction (32) transversely to the conveying direction (28) relative to the frame (14) is arranged displaceable, so that a displacement of the displacement plate (30) both the first distance (dl) and the second distance (d2) changed.

2. A friction feeder according to one of the preceding claims, characterized in that during the displacement of the displacement plate (30), the first friction element (22) and the first transport element (50) are displaced parallel to each other and along an equally long distance.

3. A friction feeder according to one of the preceding claims, characterized in that at least one element selected from a group consisting of a magazine (16), a double-leaf control device (43) and a spacer plate (42) is connected to the adjustment plate (30) the displacement of the adjusting plate (30) leads to an equal displacement of the at least one element.

4. A friction feeder according to one of the preceding claims, characterized in that the friction feeder (10) has a magazine (16) for flat products (18), wherein the magazine (16) on a crossmember (17) is held in the displacement (30) is held.

5. A friction feeder according to one of the preceding claims, characterized in that the second friction element (24) at the separation point (57) and / or the second transport element (52) at the transfer point (58) at the stationary on the frame (14) are arranged ,

6. A rubbing feeder according to one of the preceding claims, characterized in that the adjusting plate (30) has a recess (72) in which a holder (74) for the first friction element (22) or for the first transport element (52) arranged displaceably is that the holder (74) transverse transversely to the conveying direction (28) within the Ausnehm (72) displaced and at dormant adjusting plate (30) the first distance (dl) while maintaining the second distance (d2), or vice versa changed can be.

7. A friction feeder according to claim 6, characterized in that a Justierspindel (88) with a first end (90) in the holder (74) and with a second end (92) in an adjusting device (94) is held, so that at a Actuation of the adjusting device (94) of the holder (74) within the recess (72) is displaced.

8. A friction feeder according to one of the preceding claims, characterized in that an adjusting spindle (33) with a first end (35) with the displacement plate (30) cooperates and with a second end (37) in an adjusting device (39) on the frame (14 ) is held, so that upon actuation of the adjusting device (39), the adjusting plate (30) relative to the frame (14) is displaced.

9. A friction feeder according to one of the preceding claims, characterized in that the first friction element (22) is designed as a friction roller and / or that the second friction element (24) has a friction belt (36), in particular via two deflection rollers (38, 40 ) is guided.

10. Reibanleger according to any one of the preceding claims, characterized in that the adjusting plate (30) along a guide rail (54) is guided.

11. Reibanleger according to any one of the preceding claims, characterized in that the second friction element (24) has a friction belt (36) along the entire conveying path (104) with each section of the friction belt (36) at most with a roller (22, 38 , 40, 60, 66).

12. A rubbing feeder according to one of the preceding claims, characterized in that the first friction element (22) is arranged opposite a counter element (106) with a support surface (108), wherein a friction belt (36) is supported guided over the support surface (108), so that the product (18) between see the first friction element (22) and the friction belt (36) is guided therethrough while a from the first friction element (22) outgoing pressure against the friction belt (36) is received by the counter element (106).

13. A friction feeder according to one of the preceding claims, characterized by a stacking shoe (110) having a stacking plate (112) for an angular displacement of at least one curved first guide track (132) and on a curved, parallel to the first guide track (132) , Second guide track (134) is held displaceable.

14. A friction feeder according to one of the preceding claims, characterized by a stacking shoe (110) with an adjusting element (140) for adjusting the position of a stacking plate (112), wherein the adjusting element has an adjusting spindle (144) which at its first end (146) a clamping element (148) and at its second end (150) an actuating element (128), wherein the clamping element (148) upon actuation of the actuating element (128) in a direction along a longitudinal extent of the adjusting spindle (144) moves.

15. A friction feeder according to claim 14, characterized in that the clamping element (148) is designed as a clamping block, which is arranged in a profile (122) with a rear handle and that the actuation of the adjusting spindle (144) via the actuating element (128) the clamping block pressed against the profile (122), so as to achieve a clamping action between clamping block and profile (122).