WO2009141119A2 - Apparatus for forming stacked packs - Google Patents

Abstract

The invention relates to an apparatus and a method for forming stacked packs (30, 74) of flat articles (14). Said apparatus comprises a conveying plane (18) on which the flat articles (14) are conveyed by means of at least one conveyor belt (16) such that a staggered flow (70) is formed. When the stacked packs (30, 74) are separated, the staggered flow (70) is lifted from the at least one conveyor belt (16), non-positively rests against at least one stop (56), or leans on a front side (59) of the at least one stop (56).

Description

 Apparatus for forming stacked packages

Technical area

The invention relates to a device for forming stacked packs, in particular flat goods, such as e.g. flat articles of paper or cardboard, packaging material, envelopes or the like.

State of the art

EP 0 591 099 B1 relates to a method and an apparatus for producing bound stacks of articles of paper. Products are handled which are difficult to stack, e.g. Envelopes with content and viewing windows. First, these articles are continuously fed in a feed direction in a continuous stream to a feed position at the top of a stack tray. At least the trailing edge of each product is kept in a defined position. Thereafter, the formation of an auxiliary stack is carried out by stacking a predetermined number n of products on an auxiliary support surface positioned in the stacking tray below the supply position, the products being positioned at least in the front and rear feed direction by front and rear stops and the position of the auxiliary support surface in the stacking tray unchanged remains. A stack is formed by removing the auxiliary support surface and dropping the auxiliary stack onto a support surface arranged in the stack shaft below the auxiliary support surface. The auxiliary stack is guided on at least the transverse to Zufühπichtung pages by guide means. Thereafter, the repositioning of the auxiliary support surface and the formation of another auxiliary stack takes place. These steps are repeated until a predetermined number of m of auxiliary stacks are collected in the stacking shaft. In one ejection direction, the stacks are ejected to a binding position, which occurs during the formation of a next auxiliary stack,

BESTÄTIGUNSKOPIE wherein the stack is pushed by a discharge means over the support surface and guided laterally by the guide means. There is then a repositioning of the ejection means. The stacked stack is wrapped around to form a bound stack during the formation of a next stack in the stack shaft. This is followed by the conveying away of the stack from the binding position, which takes place before the ejection of the next stack.

DE 691 20 673 B2 relates to a stacking device. Disclosed is a sheet stacking system which includes a frame and a feed conveyor which serves to feed signatures. A stack of signatures is formed on a fork with the fork descending according to the feed stream of signatures. A speed adjustment belt, which is driven at a speed other than a feed conveyor belt, is lowered toward the feed conveyor belt and grips at least one of the sheets to form a nip in the stream of signatures without stopping the flow of signatures. Mounted on the frame is the rotatable arm, the arm engaging an end plate of an end plate storage device and placing an end plate on a stack of signatures which is conveyed from the stacking machine to a binding machine.

DE 1 187 636 relates to a device for interrupting the flow of flat workpieces of paper coming from a sheet-processing machine.

The flat workpieces made of paper are conveyed on circulating belts with the help of swivelable into the workpiece flow members at which the respective inhibited in their movement workpieces rise from their substantially horizontal position. The pivotable members are formed at their free end as jaws and stored below the conveyor belts. When pivoting through the conveyor belts upwards they reach through the conveyor belts and meet there arranged counter jaws.

In the solution according to DE 1 187 636 quite expensive precautions have to be taken to continue the jammed envelopes from their stowed position. In the solution according to DE 691 20 673, the separation is effected by a pivotable, the conveying speed decelerating conveyor belt, which is driven at a slower speed. EP 0 591 099 shows a solution in which surface products - in this case envelopes - with upper and lower chords singly fed to the stacking shaft. There are generated auxiliary stacks, which have a constant support height. Of Furthermore, a processing of the here created as envelopes surface products only with the longer edge transverse to the feed direction. In addition to a relatively small number of about 20,000 envelopes per hour, this separation principle known from EP 0 591 099 shows that the stack to be built up is placed on an auxiliary stack.

All in all, the solutions known from the above broadly drafted documents are, on the one hand, limited in terms of production speed and, on the other hand, require separation of a stream of sheets, e.g. Envelopes, relatively expensive and therefore cost-driving, cost-causing mechanical facial expressions.

Disclosure of the invention

The solution proposed according to the invention is based on the object of separating a continuously conveyed stream from sheet-like specimens, such as e.g. To produce printed or unprinted sheets, envelopes, cardboard or the like in a cost-effective way and to reduce the manufacturing cost of a batch separation undertaking processing machine.

Furthermore, the solution proposed according to the invention is based on the object, e.g. For freshly printed envelopes, realize a material-saving separation process. Following the proposed solution according to the invention, it is proposed to promote sheet-like articles in the context of a scale flow. To carry out a separation of the conveyed with continuous conveying speed shingled stream is a lifting of the belt conveyor about a pivot point. Due to the lifting, a slope forms relative to the belt conveyor, on which subsequently in the scale flow continuously conveyed flat articles, such as e.g. Envelop envelopes, sheets, cardboard or the like during the performance of a batch separation process. This means that the processing machine upstream of the point of stack separation, such as e.g. an overpressure machine, can continue to operate continuously and the promoted at the time of stack separation sheet articles are recorded and maintained in a kind of memory.

During the separation process in the context of the scale flow, a positive connection can alternatively be realized from an upper side. This can be achieved in that the imbricated flow lifted by the belt conveyor strikes a surface, for example the end face of an abutment device, and accumulates there. Finally, it is still possible, the scale flow with a scaling, ie a mutual overlap transported flat articles to lift out of the conveying plane and press under application of a clamping force against a stationary counter surface and by this adhesion a temporary damming of the scale flow and thus an interruption of the scale flow to reach the flat article in the stacking shaft. All three separation principles outlined above can be realized following the solution proposed according to the invention in the apparatus for forming stacked packages. The respective separation principles can be selected flexibly and for different product properties of the flat articles, such as envelopes, for example, a stroke for lifting the scale flow of inserted spring tongues can be variable. The stroke can serve with a first stroke for lifting the scale flow of straps, on the defined specification of a second stroke, a frictional connection of the scale flow can be achieved by pressing against a counter surface. Furthermore, the stroke of an actuator can be dimensioned such that a positive connection can be achieved by the deflection of arranged in the conveying plane spring tongues in conjunction with a partial lifting of a counter surface.

In a particularly advantageous embodiment of the stop device, this comprises a parallel to the belt conveyor surface. This is movable, e.g. advantageously synchronized with the elements that lift the scale flow from the belt conveyor. This means that only a stop surface for the accumulation of the flat article conveyed in the scale flow, during the lifting of the scale flow, i. Before and after the separation process, there is no effect on the scale flow above the scale flow, ie. disturbing edge in front. After the batch has been separated and the stack support changed from the stacking table to the auxiliary stack support, a surface element, e.g. a hold-down, are lowered in the direction of the belt conveyor, with which the conveyed flat articles, such. envelopes printed inside a press are safely pushed back from the stop surface towards the belt conveyor.

In an alternative embodiment, advantageously, instead of a stop device with a stop angle, a positive connection can also be made in the case of an upper stop.

/ Untergurtkonfiguration be achieved. This means that during the separation process in the scale flow promoted flat specimens, such as envelopes, the Upper belt synchronously pivoted with a lifting element about a pivot point upwards and a stop surface free.

The positive engagement causing stop surface, which serves the damming of the sheet-like copies, can be either fixed, in combination with a scraper surface or with a pivotable upper belt conveyor or movable or hinged. The stop surface is preferably designed such that it can be deflected forwards in the conveying direction of the scale flow.

Brief description of the drawings

With reference to the drawings, the invention will be described in more detail.

It shows:

FIG. 1 shows the device proposed according to the invention for the formation of stacked packages of a processing machine with belt conveyor downstream as output,

Figure 2 is a side view of the inclined plane having a device for

Formation of stacking packages according to FIG. 1,

Figure 3 is a plan view of the inclined plane with in this circumferential

webbing,

FIG. 4 shows a section through the inclined plane according to the representation in FIG. 3 in accordance with section line IV-IV,

Figure 4.1 shows a variant of the proposed device according to the invention for the formation of stack packages, in which an interruption of

Promoting the scale flow in the conveying direction by a positive accumulation on a stop surface,

FIG. 5 shows a perspective top view of the apparatus for forming stacked packs, Figures 6-9, the movements of the individual components of the apparatus for forming stack packages in a stack separating process.

variants

The apparatus for forming stacked packs proposed according to the invention will now be described by means of an embodiment in which the apparatus proposed according to the invention for forming stacked packs of a processing unit, e.g. downstream of an envelope processing machine. Within an envelope processing machine, envelopes of various formats can be printed on the top, on the bottom as well as on the top and bottom. The printed envelopes, to cite a common example of flat, sheet-like articles made of paper or cardboard, leave the processing machine arranged upstream of the stack stacking apparatus according to the invention either on an output or on a conveyor belt downstream of the output of the processing machine - e.g. represented in connection with FIG. Instead of envelopes exemplified herein for flat flat articles 14, other articles, e.g. be processed from cardboard, thicker papers, postcards or the like in the inventively proposed apparatus for forming stacked packages.

The illustration according to FIG. 1 shows a perspective view of an embodiment of the device according to the invention for forming stacked packs.

The stacked package forming apparatus shown in perspective is preceded by a processing unit 10 which may be e.g. can act around an envelope processing machine. This can - as shown in Figure 1 - be followed by a conveyor belt 12, which flat articles 14, such. Envelopes, be they with window, be it without window, in conveying direction 26 interprets. The flat, flat article 14 can also be printed on one or more pages. The conveyor belt 12 of the processing unit 10 shown in FIG. 1 is preferably arranged in alignment with the lower end of an inclined plane 18 of the device according to the invention for forming stacked packs.

The flat articles 14, which may be, for example, envelopes are either, as shown in Figure 1, lying behind each other on the conveyor belt 12th promoted and as a scale flow, as will be described in more detail below, accumulate on the inclined plane 18. The scaling with which the individual edges of the successive flat articles 14 conveyed in the conveying direction 26 overlap is of the order of 10 to 50 mm, for example 20 or preferably 15 mm. As can be seen from the perspective reproduction according to FIG. 1, there are a plurality of straps 16 arranged parallel to one another on the inclined plane 18. With these, the flat articles 14 are designed as a shingled stream 70, cf. Figures 6-9, in the inclined plane 18, which is inclined with respect to the horizontal by an inclination angle 28, promoted.

At the upper end of the inclined plane 18 disposed at an angle of inclination 28 with respect to the horizontal, there is a bridge 34. Below the bridge is disposed a lateral guide 32, by which the scalloped, flat articles 14 are laterally aligned with respect to each other, so that the Shingled stream can continuously run into a stacking shaft 20. The stacking shaft 20 is bounded by stacking shaft boundaries 38 as shown in FIG. At the outlet end of the inclined plane 18 is a vibrating element, which is for a correct

Aligning the stack forming a flat article 14 provides.

The bridge 34 is preferably arranged in front of the stacking shaft 20. On the inside of the bridge 34, the Gurtbändera 16 assigning, are shown in more detail in Figure 4 stops 56. Below the stops extending between the straps 16 of the inclined plane 18 spring tongues 48 which extend at attachment points 52 between the parallel to each other in the conveying direction 26 Belt straps 16 are attached. As can be seen from the illustration according to FIG. 1, the stops 56 can be laterally displaced transversely to the conveying direction 26 so that they depend on the format to be processed or, for example, on printed envelopes, depending on the printed image on the flat, in this case printed articles 14, e.g. Envelopes, can be moved to non-printing zones, so that no smearing occurs.

Between the stacking shaft 20 limiting stack boundaries 38 is a fork-shaped auxiliary stacking pad 40. This can be operated, for example pneumatically or electromagnetically. The auxiliary stack pad 40, tongue or fork-shaped, is retracted counter to the conveying direction 26 in the stacking shaft 20, or extended from this. Furthermore, the auxiliary stacking pad can be moved in the vertical direction to the transfer point on the horizontal delivery in a manner corresponding to the stack structure taking place thereon. This lowering movement takes place with a path-controlled drive in order to be able to set the appropriate transfer height for different product qualities, production speeds and different stacking package heights.

FIG. 1 shows that the inclined plane 18 of the device for forming stacked packs, as shown in FIG. 1, is arranged at an angle of inclination 28 with respect to the vertical.

In the stacking shaft 20 is a stacking table 42, see. Representation of Figure 2, moved in the vertical direction. The stacking table may e.g. be driven by a toothed belt or the like. The stacks in the stacking shaft 20 stacked on each other, relative to each other aligned flat article 14 are conveyed by the stacking table 42 in the vertical direction down and placed on a display 22. The display 22 is designed in such a way that the stacking table 42 conveying a stack into the display 22 dips into the display 22 with its stacking surface. As soon as the stacking table 42 has conveyed a stack constructed in the stacking shaft 20 into the delivery 22, a slide, not shown in FIG. 1, transverses the conveying direction 26 via the stacking table 42 and conveys stacking packets 30 according to the lateral feed 24 into the delivery 22. From the illustration According to FIG. 1, it is apparent that a plurality of stack packages 30 are already located in the delivery 22, said containers being displaced over the slide 46, which is moved in the horizontal direction and can be moved in accordance with the lateral advance 24.

The illustration according to FIG. 2 shows a view of the device for the formation of stacking packages shown in perspective in FIG. 1 and proposed according to the invention.

FIG. 2 shows that the stacking table 42 is positioned in a lowered position without flat articles 14. One of the stack boundaries 38 can be seen in FIG. Behind the stacking table 42, which is shown in an intermediate position, there is a slide 46, which in the horizontal direction, i. in the drawing plane according to Figure 2 a lateral feed

24 for pushing out stacking packs 30 - as shown in Figure 1 - in the display 22 is used. FIG. 2 additionally shows that the inclined plane 18 is arranged at an angle of inclination 28 with respect to the vertical. An inlet side of the crooked

Level 38 is identified by reference numeral 44. The inclined plane 18 includes, like already shown, the juxtaposed straps 16, of which in Figure 2, only a webbing 16 is shown.

Figure 3 shows a plan view of the inclined plane of the inventively proposed device for forming stacked packages. FIG. 3 shows that the inclined plane 18 has a number of belt straps 16 which rotate about deflecting rollers indicated only schematically. The straps 16 are preferably such that their surface is slightly roughened to ensure promotion in the scale flow 70 of flat articles 14 in the conveying direction 26. Between the straps 16 of the inclined plane 18 are located in the embodiment variant according to Figure 3, two spaced-apart spring tongues 48. The spring tongues 48 may e.g. be formed as metallic elements, preferably flat steels or the like. The thickness of the spring tongues 48, as shown in Figure 3, is preferably such that, in a lowered position 60 (as shown in Figure 4), they dive back between the tops of the webbings 16, i. do not protrude beyond their roughened surfaces. In the plan view according to FIG. 3, only schematically indicated, there are 18 actuators 50 below the inclined plane. to act electromagnets, pneumatic or hydraulic cylinders, which deflect the actuation points 52 facing away from the ends of the spring tongues 48 in the vertical direction with an actuatable pin under pressure or voltage.

As can be seen from the illustration according to FIG. 3, a bridge 34 is located in the region of the deflectable ends of the spring tongues 48. The bridge 34 has a substantially U-shaped profile and covers with its longitudinal side the inclined plane 18. The bridge 34 is slidably disposed in the conveying direction 26 of the scale flow 70. On the inside of the oblique plane 18 spanning longitudinal side of the bridge 34, laterally adjustable stops 56 are added to slots 54, as shown in Figure 4. In accordance with the lateral travel path defined by the length of the slots 54, the stops 56 received on the inside of the longitudinal side of the bridge 34 can be adjusted in the lateral direction. Preferably, the laterally adjustable along the slots 54 stops 56 are provided on the deflectable by the actuators 50 free ends of the spring tongues 48, so that adjusts an inlet gusset 64 shown in Figure 4 between these ends of the spring tongues 58 and the stops 56, in the case in that the spring tongues 48 assume their position 62 shown in dashed lines in FIG. 4 at the stops 56. Although in FIG. 3 an embodiment variant of the device proposed according to the invention for the formation of stack packages with two actuators 50, each one spring tongue 48 is independent acted upon by the other spring tongue 48 is shown, so the two spring tongues 48, which are actuated simultaneously, also by only one actuator 50, be it a pneumatic cylinder, a hydraulic cylinder, be it an electromagnet operated. For this purpose, only a mechanical coupling of the deflectable ends of the spring tongues 48 is provided.

In the illustration according to FIG. 3, the lateral guide 32 (see perspective view according to FIG. 1) is not shown for reasons of simplification.

FIG. 4 shows a section through the inclined plane 18 according to section line IV-IV in FIG.

The illustration according to FIG. 4 shows that the spring tongues 48 are made so thin that the thickness of the straps 16 circulating on the inclined plane 18, cf. illustration according to FIGS. 2 and 3, exceeds the thickness of the deflectable spring tongues 48. This ensures that in a parked position 60 of the spring tongues 48, these do not impair unimpeded transport of the flat articles 14 conveyed in the shingled stream 70 in the conveying direction 26 along the inclined plane 18. FIG. 4 shows that at least one actuator 50 is accommodated below the inclined plane 18. This includes e.g. an extendable pin or other coupling member which strikes a free end of at least one deflectable spring tongue 48 and this represents from its in Fig. 4 shown in solid lines lowered position 60 in the employee position shown in dashed lines 62. As shown in FIG. 4, when the position 62 of the open ends of the spring tongues 48 is against the underside of the stops 56 received on the bridge 34 in the conveying direction 26, an inlet gusset 64 is formed in which the flat articles 14 conveyed in the shingled stream 70 join accumulate continuous promotion in the conveying direction 26. In the damming of the flat article 14 forming the shingled stream 70, shingling, i. a shortening of the distance between the leading ends of the flat article 14 come. However, this is irrelevant to the stack separation, which will be described in more detail with reference to FIGS. 6 to 9.

From the illustration according to FIG. 4, it can be seen that the stops 56 fastened to the inside of the bridge 34 can have a rounding 58 delimiting the inlet funnel 64. Instead of a rounded trained side of the stops 56 may be formed on these also a wedge-shaped projection or the like, to which the free Ends of the at least one spring tongue 48 can be made by operating at least one actuator 50, as soon as they occupy the salaried position 62.

In an embodiment variant of the device proposed according to the invention for the formation of stack packages, as shown in FIG

Promotion of the scale flow 70 in the conveying direction 26 can also be achieved by positive locking. As the sketchy representation according to Figure 4.1 can be seen, is at

Activation of the actuator 50, be it a pneumatic cylinder, be it one

Electromagnetic actuator, the at least one spring tongue 48 deflected with its free end up in their salaried position 62. Thus, the free end of the spring tongue 48 is raised above the conveying plane 18 and raised above the straps 16 and lifts the

Schuppenstrom 70 of these.

The shingled stream 70 or the flat article 14 constituting it, are made in a form-fitting manner against a stop surface 59. At this the individual flat articles 14 are able to accumulate while reducing the scale spacing. A hold-down 61 limits the growth of the scale flow 70 by pushing flat articles 14 over each other.

A release of the interruption of the promotion of the scale flow 70 in the conveying direction 26 takes place by re-driving the actuator 50, so that the spring tongues 48 shown in Figure 4.1 in their salaried position 62 with their free ends back into the conveying plane 18, i. snap back below the roughened tops of the at least one webbing 16 and the hold-down 61 pushes the scale flow 70 back into the conveying plane below the end face 59 back.

Although the end face 59 as shown in Figure 4.1 can be formed on the at least one stop 56, there is also the possibility of the material or the Schuppenstrom facing end side of the long side of the bridge 34 as a stop surface, i. as the form-locking surface to use. As shown in Figures 4 and 4.1, the stops may have both straight end faces 59 (see illustration according to Figure 4.1) and roundings 58, which limit the inlet gusset 64 described in connection with Figure 4.

FIG. 5 shows a perspective view of the device proposed according to the invention for forming stacked packs. The on the inlet side 44 on the straps 16 of the inclined plane 18 in scaly formation accumulating flat article 14 are conveyed in the conveying direction 26 and reach either the top of a fork-shaped auxiliary stack pad 40 or on the top of a stacking table 42. The alignment of the scale flow or the flat article 14 forming this takes place via the lateral guide 32 shown in FIG. 1, as well as a continuously operated vibrator opposite the open ends of the auxiliary stacking pad 40, with which the flat articles 14 forming the stack or stacking packs 30 extend over their short or long sides be aligned in relation to each other. Position 46 designates the plan side of the lateral feed 24 exporting slide 46. Figure 5 also shows that the stacking shaft 20, in which both the fork-shaped auxiliary stacking pad 40 and the stacking table 42 are moved in the vertical direction, preferably formed as sheets stacking chute boundaries 38 is formed.

With reference to the figure sequence of Figures 6 to 9, the occurring in the batch separation movements of the essential components of the apparatus for forming stacking packets according to the figures 1 to 5 are described in more detail.

According to FIG. 6, flat articles 14 are conveyed on the inclined plane 18 (not shown) in the shingled stream 70, forming a mutual overlap of the order of 10 to 50 mm, preferably 10 to 30 and eg particularly preferred 15 mm overlap in the conveying direction 26. As can be seen from the schematic illustration according to FIG. 6, at least one abutment 56, which is received on the inside of the bridge 34 shown in FIGS. 1 and 2, is located above the scale flow 70. Below the scale flow 70, which is conveyed in the conveying direction 26, there is at least one deflectable spring tongue 48. In the illustration according to FIG. 6, the spring tongue 48 is shown in the idle state, ie set back under the upper side of the webbing 16 having a roughened surface. An adjusting movement 68, as indicated by the arrow in Figure 6, does not take place. In this operating state, the overlapping flat articles 14 forming the shingled stream 70 are conveyed continuously in the conveying direction 26, fall into the stacking shaft 20 and form a slowly building stack with the stacking height 74 on the top side of the stacking table 42, aligned laterally and transversely , is in the construction of a stacking package 30 in stacking height 74 on the top of the stacking table 42, the auxiliary stack pad 40 retracted. An indicated by reference numeral 72 retraction movement of the auxiliary stack pad 40 has not yet taken place in the operating state shown in FIG. When constructing a stacking package 30 of the stack height 74 on the top of the stacking table 42, the stacking table 42 is continuously moved downward in accordance with a traversing movement 76 according to the double arrow, so that the stacking package 30 can be continuously formed from the top until the stacking height 74 is reached.

If the height 74 of the stacking package 30 is reached, the free end of the at least one spring tongue 48 is deflected by the actuator 50 according to the adjusting movement 68 shown in FIG. As a result, the inlet pocket 64 shown in FIG. 4 is formed between the deflected end of the at least one spring tongue 48 and the underside of the stop 56. In this inlet gusset 64, the further in the conveying direction 26, the scale flow 70 forming further promoted flat, one or more pages printed article 14. In this case, caused by the damming, can lead to a reduction in the "scale", ie the distance between the leading edges of flat article 14 to flat article 14. Once the at least one spring tongue 48 is deflected in adjusting movement 68, which is the stack height 74 has reached stacking packet 30 that has been lowered by stacking table 42 and has released a retraction movement 72 of auxiliary stacking pad 40. The retraction of auxiliary stacking pad 40 in accordance with retracting movement 72 as indicated in FIG. 7 can be realized by a pneumatic cylinder or an electric or other drive Activation of the at least one spring tongue 48, ie its hitching to the underside of the at least one stop 56, lasts so long that all flat articles 14 are conveyed into the stacking shaft 20 and then retracting the auxiliary stacking pad 40 clearly without collision with the flat to be processed and optional printed items 14 can be made, as well as the time-controlled retraction of the auxiliary stack pad 40 on the stack package 30, which is transported by lowering the stacking table 42 and in the vertical direction down.

Once - as shown in Figure 8 - the auxiliary pile pad 40 is retracted in retraction 72 into the stacking shaft 20 between the lateral stack boundaries 38, the at least one spring tongue 48 is turned off at stop 56 and the scale flow 70, formed from flat articles 14, on the Stacking table 20 retracted auxiliary stack pad 40 continuously built. Depending on the stacking package 30 that builds up on the auxiliary pile support 40, it moves downwards in accordance with the arrow characterizing a depression 78 in order to stack up the flat articles 14 continuously conveyed from the top side. While the auxiliary stacking pad 40 takes over the stacking, the stacked package 30 accommodated on the stacking table 42 moves downwards in the stacking height 74. The stacking table 42 forming level is aligned in the lowered position of the stacking table 42 with a horizontal surface of the display 22. As soon as the horizontal surface of the display 22 to the top of the stacking table 42 is aligned, taken on the stacking table 42 stack package 30 is pushed by the side hub 24 exporting slide 46 on the display 22 , This is preferably designed so that it has an optimal for a user ergonomic removal height with respect to the stack packages 30.

Once the stack package 30 is pushed by means of the slider 46 in execution of a lateral feed 24 on the display 22, the stacking table 42 moves in the stacking shaft 20 from below to the auxiliary stack pad 40 zoom, on the meantime, the next stack package 30 is formed. Both the slider 46 and the stacking table 42 are contoured and comprise comb-like surfaces, so that the slider 46 can move laterally into the free spaces formed between the bars or webs of the stacking table 42 and shifts the stack of packets formed by this in the direction of the display 42 ,

The illustration according to FIG. 9 shows that as soon as the stacking table 42 has moved up to the underside of the auxiliary stacking pad 40 enabling the stacking of the next stacking packet 30, it is moved back in the extension direction 82. The stack built up on the upper side of the auxiliary pile support 40 is thus received from the upper plan side of the stacking table 42. Depending on the conveying speed of the scale flow 70 in the conveying direction 26 and stacking height 74, the stacking table 42 is lowered proportionally in the stacking shaft 20 until a new stack separation takes place by activation of the at least one spring tongue 48 by the actuator 50.

For detecting the number of flat, printed articles 14, which accumulate in the gusset region 64 when at least one spring tongue 48 is activated, a counter is located on the inlet side 44 of the inclined plane 18. Also above the stacking shaft 20, a counter which detects the flat articles 14 is advantageously provided. The flat, flat articles 14 can, for example, be counted in the singulated state at the transfer of a processing machine preceding the stacking device. Furthermore, the number of flat articles 14 on the suction belt or conveyor belts can be calculated by knowing the individual lengths and conveying speeds. Alternatively, a count of the flat, flat article 14 in the scale flow 70 can take place. As an alternative to the configuration of the stack separation device illustrated in FIGS. 6 to 9 or in FIG. 4, the spring tongues 48 can also be deflected at their free end in such a way that they allow a form fit to be moved in front of the leading edge of the stops 56. Above the deflected free ends of the at least one spring tongue 48 is then a hold-down. Between the deflected end of the at least one spring tongue 48 and the underside of the blank holder results in the inlet pocket 64 shown in Figure 4, within which the continuously conveyed in the conveying direction 26 flat article 14 which make up the scale flow 70, dammed. According to this embodiment variant, the flat articles are dammed up on the front edge of the stops 56 forming a stop surface and acted upon by a type of hold-down device. According to this solution, further conveyance of the shingled stream 70 takes place when the fork-shaped or tongue-shaped auxiliary pile support 40 has moved into the stacking shaft 20 and the previously formed stacking pack 30 is removed from the stacking shaft 20 by lowering the stacking table 42. As soon as the auxiliary stacking pad 40, pneumatically or electromagnetically moved, has retracted into the stacking shaft 20, activation of the hold-down device and the blockage caused by positive locking of the flat printed article 14 of the scale flow 70 at the front edge of the stops 56 is canceled and the scale flow 70 is lifted under the Front end of the stops 56 (see illustration according to Figure 4) pressed transversely. Thus, the interruption of the promotion of the scale flow 70 can be reversed according to this alternative embodiment and ensure that flat copies aligned in the stacking shaft 20 according to pre-defined stack heights 74 stack stacking 30 by the side guide 32 and a continuously operated vibrator.

The counting of the flat article 14 can take place either in the transfer at the inlet side 44 of the conveyor plane 18 of this upstream processing machine in the isolated state and then to the number of flat articles 14, which on the at least one belt 16 or Saugband or otherwise designed Conveyor belts is recorded, with knowledge of the individual lengths and conveyor speeds are calculated. Alternatively, a count of the flat article 14 in the scale flow can take place. The already mentioned liftable surface elements 48, which are preferably designed as flat steel or as spring tongues 48, have the advantage that they can be easily offset on the running surface of the at least one webbing 16, ie in the conveying plane 18, if the number of straps or the Belt spacings are to be adapted to the product. Alternatively, recesses in the belt running surface could be provided and any thickness having dividers for deflection, ie for Lifting of the scale flow 70 can be used from the conveying plane 18. It has also been found that also the stacking shaft 20, in which the stacking table 42 and the retractable auxiliary stacking pad 40 are moved vertically, can also be tilted, ie with respect to the vertical, which does not affect the efficiency of the stack separation. and what achieves advantages in terms of achievable quality with other format sizes. In order to facilitate a simple horizontal pushing off of the formed stacking pack 30, which is constructed in the stacking height 74 on the stacking table 42, the slider 46 which can be moved in the horizontal direction can also have comb-like arranged webs as the stacking support 42 itself. This allows a complete retraction of the in the transverse direction relative to the stacking table 42 movable slide 46 so that the stack of packages 30 can be reliably ejected into a display or the like.

LIST OF REFERENCE NUMBERS

Claims

claims Anspruch [en] A device for forming stacking packs (30, 74) having a conveying plane (18) in which flat articles (14) are conveyed with at least one webbing (16) to form a shingled stream (70), characterized in that during a separation the stacks (30, 74) of the shingled stream (70) is lifted from the at least one belt (16), or is either frictionally engaged with at least one stop (56) or in positive engagement on an end face (59) of the at least one stop (56 ) is present. 2. Apparatus according to claim 1, characterized in that the conveying plane (18) is designed as an inclined plane and by an inclination angle (28) with respect to the Horizontal is inclined. 3. A device according to claim 1, characterized in that the conveying plane (18) from an inlet side (44) of the scale flow (70) to a stacking shaft (20). 4. The device according to claim 3, characterized in that in front of the stacking shaft (20) a side guide (32) for the scale flow (70) is arranged, and the stacking table (20) of stacking shaft boundaries (38) is limited. 5. The device according to claim 4, characterized in that the side guide (32) is formed by a funnel-shaped inlet region limiting profiles that are dependent on the format of the flat article (14) in the conveying plane (18) laterally adjustable. 6. The device according to claim 3, characterized in that the stacking shaft (20) is associated with at least one movable alignment element over which continuously the stacking shaft (20) supplied, flat articles (14) are aligned. 7. The device according to claim 1, characterized in that arranged in the conveying plane (18) at least one liftable over the belt level surface element (48) is whose free end via at least one actuator (50) from the conveying plane (18) is deflectable. 8. The device according to claim 7, characterized in that the at least one liftable over the belt level surface element (48) as a spring tongue or as Flat strip is executed, whose thickness is less than the thickness of the at least one webbing (16). 9. The device according to claim 7, characterized in that the at least one actuator (50) as a pneumatic cylinder or as an electromagnetic plate or as piezoelectric Actuator is executed. 10. The device according to claim 1, characterized in that in the conveying plane (18) a bridge (34) is received, which either itself represents a stop (56) or at least one laterally transversely to the conveying direction (26) adjustable Stop (56) receives. 11. The device according to claim 10, characterized in that the at least one stop (56) designed as a rounding (58) running-in slope and / or a straight end face (59). 12. The device according to claim 11, characterized in that the rounding (58) with the at least one spring tongue (48) in its employee position (62) forms an inlet pocket (64) for the scale flow (70). 13. The apparatus according to claim 11, characterized in that the end face (59) of the at least one stop (56) in front of the bridge (34) in an employed position (62) of the at least one spring tongue (48) a Aufstaufläche for the scale flow (70). represents. 14. The device according to claim 13, characterized in that the end face (59) of the at least one stop (56) or the bridge (34) is associated with the scale flow (70) leading down device (61). 15. The device according to claim 3, characterized in that the stacking shaft (20) of stacking shaft boundaries (38) is limited, one in the stacking shaft (20). Having retractable and in the stacking shaft (20) vertically movable auxiliary stacking pad (40) and a vertically movable stacking table (42). 16. The apparatus according to claim 15, characterized in that an upper side of the stacking table (42) in the lowered state thereof with a plane surface of a Horizontal display (22) is aligned and a slider (46) a stacking package (30, 74) from the top of the stacking table (42) in the horizontal direction. 17. The device according to claim 3, characterized in that on the inlet side (44) of the conveying plane (18) has a number of flat articles (14) of the Schuppenstromes (70) detecting counter is arranged, which counts the flat articles (14) in the transfer to the conveying plane (18). 18. The device according to claim 17, characterized in that when interrupting the promotion of the scale flow (70) in the conveying direction (26) upon activation of the at least one spring tongue (48) stored in the conveying plane (18) within the scale flow (70) , held flat items (14) is known. 19. The device according to claim 7, characterized in that in the conveying plane (18) at least one, preferably two adjustable spring tongues (48) are arranged, each between two adjacent, in the conveying plane (18) circulating belt straps (16) are arranged, wherein the straps (16) comprise a grippy surface. 20. The device according to claim 1, characterized in that the number of webbings (16) and the number of separating elements (40, 42, 48) for forming the stacked packages (30, 74) depending on the product properties of the flat article (14) variable is executed. 21. The device according to claim 3, characterized in that the stacking shaft (20) and / or the stacking table (42) is inclined with respect to the vertical / are. 22. Device according to one or more of the preceding claims, characterized in that the movable in the horizontal direction slider (46) and the Stacking table (42) comb-like running into each other. 23. A method for forming stacked packs (30, 74) by stack separation of a shingled stream (70), from flat articles (14) with the following process steps: a) raising the scale flow (70) of at least one in a Conveying plane (18) circulating belt (16), b) the temporary interruption of the promotion of the scale flow (70) in Conveying direction (26) by raising the scale flow (70) or by force or form-locking damming of the scale flow (70), c) the retraction during process step b) Auxiliary stacking pad (40) into a stacking shaft (20), d) the lowering (76) of the stacking table (72) taking place after method step c) with stacking packet (30, 74) received thereon and the lateral ejection of the stacking packet (30, 74) the top of the stacking table (42) by means of a slider (46), e) the construction of a new stacking package (30, 74) on the auxiliary stack underlay during the execution of method step d), f) lifting the emptied stacking table (42) into vertical Direction within the stacking shaft (20) below the auxiliary stacking pad (40) and g) the extension (82) of the auxiliary stacking pad (40) from the stacking shaft (20) and the inclusion of the newly constituting stacking package (30, 74) on the stacking table (42) , 24. The method according to claim 23, characterized in that according to method step a) the lifting of the scale flow (70) by pressurizing a pneumatic cylinder designed as an actuator (50) or voltage applied as a solenoid actuator actuator (50), via the at least one spring tongue ( 48) is deflected. 25. The method according to claim 23, characterized in that according to method step b), a temporary interruption of the promotion of the scale flow (70) in the conveying direction (26) by accumulation on a stop surface (59), which is associated with a hold-down (61). 26. The method according to claim 23, characterized in that according to method step b) a temporary interruption of the promotion of Schuppenstromes (70) in the conveying direction (26) by adjusting the scale flow (70) within an inlet gusset (64) to at least one stop (56). 27. The method according to claim 23, characterized in that according to method step c) the auxiliary stacking pad (40) according to method step c) after successful entry into the stacking shaft (20) and after cancellation of the interruption of the promotion of the scale flow (70) in the conveying direction (26) is continuously lowered according to the build speed of the stacking package (30) in the stacking shaft (20). 28. The method according to claim 23, characterized in that method step c) takes place after all behind a separation point of the scale flow (70) present flat article (14) are conveyed into the stacking shaft (20). 29. The method according to claim 23, characterized in that according to method step d) further processing of the stack packs formed (30, 74) either by manual removal or automated further processing takes place.