DE102012106110B4 - Device for multilayer stacking a pad - Google Patents

Abstract

Apparatus for automatically stacking packages on a support in a predetermined spatial arrangement to form a stack comprising: - at least one feed conveyor (2) providing the singulated packages (W) in a predetermined order; - With a lifting and lowering unit for lifting and lowering in a stacking space (6) arranged pad (P, 8) in the Y direction; - With displacement means adjacent to a discharge end of the supply conveyor accepting packages (W) from the supply conveyor (2) and transporting them to the predetermined position in the stack (S); the displacement means comprising: - a positioning conveyor (4) adjacent the discharge end of the supply conveyor, arranged horizontally and longitudinally to one side of the stacking station (6) for positioning the packages (W) in the X direction, - at least one sliding plate (13) and a pusher (14) for transporting the packages (W) from the Z-direction positioning conveyor to the predetermined position in the stack (S), the at least one sliding plate being shown as being horizontal and along the side of the stacking station (6 ) and transversely formed thereto flat strip-shaped plate is formed to take over the packages (W) when pushing the packages (W) through the pusher of the positioning conveyor (4) at the X-direction position and in the Z direction on the substrate ( P, 8, 45) or in the stack (S) store, characterized in that the positioning conveyor is designed as an endless conveyor (4) and the at least one Schiebeplat te (13) between the upper run (7) and lower run (20) of the endless conveyor (4) passes through.

Description

The invention relates to a device for automatic stacking of packages on a base in a predetermined spatial arrangement for forming a stack according to the features of the preamble of claim 1.

The automatic stacking of a base or a carrier, in particular a pallet or a trolley, with packages for forming a stack for later shipping, so the "palletizing" is known per se. In this case, however, packages of uniform size or extent by robots, grippers, etc. are stored on mathematically determined places.

The process of automatically loading a load carrier with packages of different characteristics to form a stack, on the other hand, is the so-called automatic mixed-case palletizing.

In today's distribution logistics, ever greater demands are placed on order picking. It is therefore necessary to develop picking systems that process jobs automatically without manual intervention.

Thousands of different products (or packages) of different characteristics (size, shape, weight, dimensions, surfaces, strength, etc.) must be picked automatically with such systems.

Here, different aspects must be taken into account, which enormously increase the complexity compared to the "simple" manual stacking of simple regular geometries. Thus, a subsequent package can be stacked or deposited well on a previous package only if it has a flat or even surface, which should also be aligned approximately horizontally, and if the package carry the weight of the deposited on him further packages without damage can.

Furthermore, the stack formed should have a certain stability, u. a. so that it does not fall over during transport. A wrapping with foil helps, but can not alone stabilize a faulty stack.

In addition, on the customer side, optimization of the stacks due to the desired unloading order is increasingly desired.

The stacking of different packages or goods of different size or extent is therefore usually still by hand, since the requirements for the stability of the stack, the packing density within the stack and the order of loading and the associated discharge sequence and not least the stackability of the goods are extremely high and are not yet met only partially by the known methods and devices.

From the EP 1 462 394 B1 is a device for automatically loading a load carrier with a load stack forming packing units, so a device for palletizing known. In the apparatus, the packing units are stored on trays and occasionally fed and deposited by them on a packing table. There, the packing unit is moved on the table by a pusher along the broad side of the pallet to be loaded, until the loading coordinates in the X direction are reached. Subsequently, another pusher and a loading tongue simultaneously push the packing unit in the direction of the loading depth over the pallet until the loading coordinates in the Z direction are reached. The loading tongue then retracts, with the pusher stopping and serving as a scraper, so that the packing unit is deposited on the pallet at the desired point "freely falling". In this case, the forming stack is supported by a loading aid on the other three sides. So it is stacked "against the wall". Moving on the packing table, however, is time consuming and has disadvantages in forming the packing pattern due to limited accessibility. It is also imperative that the loading tongue and the scraper / pusher move simultaneously in the X direction. Also, only one packing unit can always be "processed" sequentially.

From the WO 2010/059 923 A1 For example, an automatic robot-based stacking apparatus is known in which an intermediate plate is used to form the first layer of a stack and simultaneously change pallets.

From the EP 0 566 839 B1 a palletizer is known, can be grouped in the objects and rotated by a turntable in their orientation, to be subsequently pushed onto a conveyor belt and pushed from there as an aligned composite on a pallet or a kind of position located thereon.

The DE 36 14 256 A1 discloses a device for stacking sensitive products with a supply device for forming a series of products and with a sliding platform arranged laterally relative to the supply device so that the series of products can be pushed onto or against an already existing packaged material layer, wherein the supply device comprises an air cushion, on which the products are floating.

The EP 1 321 396 A1 also shows a palletizer, in which parcels are aligned parallel to the stacking place on a conveyor and aligned according to the later place in a series of products and deported to an intermediate place. From the intermediate place then the product rows are taken over again in or on the stack.

In contrast, the object of the present invention to provide an apparatus for automatically stacking packages on a carrier in a predetermined spatial arrangement to form a stack, which allows a flexible-mixed-case (various packages) stacking with high throughput.

This object is achieved by the reproduced in claim 1 device. Advantageous embodiments will become apparent from the dependent claims and the description.

According to the invention, the positioning conveyor is designed as an endless conveyor, so that it is possible on the one hand to achieve high performance by the endless conveyor and on the other hand to handle the packages safely. Several packages can be transported and relocated at the same time. In addition, the structure and the control are simple.

In the present case, an endless conveyor is understood to mean a conveyor in which an endless belt circulates and forms a uniform surface. As endless conveyor within the meaning of the invention, belt conveyors, belt conveyors, carrying chain conveyors, link belt conveyors, apron belt conveyors come into consideration.

According to the invention then engages the at least one sliding plate between the upper run, so the upper portion is promoted on, and Untertrum, so the lower portion of running back, the endless conveyor through, so that there is a particularly compact design.

If above the endless conveyor in the X direction, optionally in the Z direction, movable stop for the arranged on the endless conveyor packages for fine positioning of the position in the X direction, the packages can be particularly easily and accurately positioned. Depending on the design of the surface of the endless conveyor this does not even have to be stopped, but can continue to run while the packages "slide" on the surface.

Also possible is the use of abutment slats on the endless conveyor, in particular on the upper side of the upper run, for the exact positioning of the packages. The positioning conveyor could then possibly be operated reversing so that the stop lamellae do not have to circulate. If enough space is provided, the stop plates could also rotate.

If no single pusher is used as in the prior art, but the pusher is designed as an arrangement of a plurality horizontally and along the side of the stacking space arranged Einzelpusher, that is designed as a battery, the pushing of the packages from the positioning conveyor in the direction of the stack The individual pushers can be moved in the Z direction independently of the at least one sliding plate in order to retain the package when retracting the sliding plate, the packages can be positioned even more variable and also several packages with less time offset or even stacked simultaneously.

In a particularly preferred variant, not all individual pushers have their own drive, but instead have at least one, preferably two, common drives, which can be coupled to a drive of their choice with a specific single pusher. For this purpose, the drive can be moved and reach via a coupling element into engagement with a drive carriage of the respective (adjacent) Einzelpushers.

The Einzelpusher are thus hung on a frame on which they are in the Z direction on the stack to (or away) movable. For this purpose, they are approached by a carriage, which is transverse to it, that is to say in the X-direction, and which carries the drive, wherein a coupling or driving element thereby establishes the operative connection between the drive and the individual pusher. The entrainment element hangs leaf-shaped or strip-shaped from the drive or its VerTracksraverse down and engages in an upwardly open groove on the drive carriage or the adjacent Einzelpusher, to which the driver has a corresponding width.

Preferably, two such movable joint drives are provided, one coming from each side in the X direction of the frame or upstream and downstream in the X direction coming to the stacking place ago.

The arrangement of the Einzelpusher can extend over the entire length of the positioning, then the Einzelpusher can be made immovable in the X direction or conveying direction of the positioning. Alternatively, it is also conceivable to provide correspondingly less individual pushers, but at least two, and then to make them adjustable in the X direction for compensation.

In a preferred embodiment, the at least one sliding plate is formed as horizontally and along the side of the stacking place and transversely thereto formed flat strip-shaped plate, which tapers in the direction of the stacking place thinner. The sliding plate is suspended on the opposite side of the carrier of the positioning. If necessary, it is attached to the same frame as the individual pushers. If more than one sliding plate is available, these can be arranged parallel and next to each other.

It is preferred if the at least one sliding plate is in each case movable in a carriage-like manner back and forth on a linear axis aligned in the Z direction. Thus, it can be easily extended or retracted in the required Z-direction towards the stack and is still stiff enough by the long contact surface or number of support points. The drive can z. B. via a toothed belt, a rack, etc. done.

It will be appreciated that depending on the configuration of the positioning conveyor, the sliding plate engages under or through the latter in order to position a package on the other side in the stack.

It is also possible to make the at least one sliding plate movable in the longitudinal direction (X direction) of the positioning conveyor, in particular if only one or a few, preferably two sliding plates are provided. Then they can move together or independently. If they are independently movable, several packages can be moved simultaneously to the carrier or into the stack.

Alternatively, according to the number of Einzelpusher also correspondingly many sliding plates can be distributed uniformly over the length of the positioning. Then an adjustability in the X direction is not necessary. Each slide plate is then preferably "associated" with a single pusher and placed with the single pusher in a vertical plane, i. H. Seen from above arranged one above the other aligned. The sliding plates can be designed analogous to the Einzelpusher (see above) also with common drives.

It is also possible to control selected Einzelpusher together, so that z. B. two to four adjacent Einzelpusher simultaneously move a larger package together. Accordingly, the sliding plates can be controlled together.

To provide a structurally simple and non-obstructing suspension, it is useful if the arrangement of the Einzelpusher is attached to a frame extending above the positioning conveyor frame. The frame preferably rests on rail-like profiles and also serves as a support or suspension for the sliding plates. Thus, together with the arrangement of the single pusher and the slide plates, the frame forms a modular pusher slide plate unit.

In automatic systems and processes of high complexity such as the present, it comes despite all planning disturbances, eg. B. because a package falls down during stacking. Then a manual intervention by an operator is necessary. In order to facilitate or facilitate their intervention, it is therefore provided in one embodiment that frame is movable together with the unit of pusher and sliding plates away from the stacking place, which can be done manually or driven. Preferably, the unit is to rail-like displaced, in particular via a drive. Preferably, the drive is a spindle that is manual or motor driven. It is also useful if the positioning conveyor is attached to the frame so that it is also "removable". This possibility of manual interference removal or loading increases the availability of the device.

A converter for the packages can be arranged between the feed conveyor and the positioning conveyor. This can be designed as a pusher. It is possible that the pusher transported together with the carriage the package to the desired X-position, so that the package is transported between quasi pusher and side stop of the carriage "trapped". Thus, high accelerations and speeds in positioning without a risk of shifting, falling, etc. are possible.

Thus, in one variant, the pusher (translator) is movably suspended and driven on a rail extending along the support and running parallel to the positioning conveyor.

However, it is also conceivable that the feed conveyor applies the packages directly to the positioning without the interposition of a converter. In one variant, the feed conveyor ends perpendicular to the positioning and "pushes" the packages directly on the positioning on.

Overall, it is possible to perform the stacking of the carrier flexible and high performance. In particular, a wide range of different packages can be stacked continuously. It can therefore in addition to the course also handled uniform less demanding packages Packages of various dimensions are stacked one after the other on the carrier.

As packages come a variety of goods, packaged goods, packaged goods in groups, such as boxes, boxes, boxes, containers, goods on trays, packaging units, such as. As foil Merfachverpackungen plastic bottles, etc., as well as individual items of all kinds in question.

As a support are intermediate plates or carriers, such as pallets and trolleys, or similar documents for general cargo and their packaging in question.

Feed conveyors are understood to mean, in general, roller conveyors, conveyor belts and conveyor systems. These can be fed manually or automatically. The packages are separated and tendered in the correct order for the desired packing sequence on the conveyor. The correct order is determined mathematically during the execution of a job. Corresponding software is known. The special feature is that the packages on the feed conveyor without aids, such as trays, containers, etc, are tendered.

The packages are therefore delivered separately. However, it is also possible to group groups of identical or very similar packaged or unpackaged packages for common handling. This grouping then takes place either in the area of taking over the packages from the feed conveyor by the displacement means or already during the loading of the feed conveyor. Due to the special design of the pusher as a battery just such packages can be displaced or positioned together.

It is also favorable if the packages are aligned before the takeover by the displacement means. This allows a standardized and thus simplified takeover of the packages by the displacement means. Alternatively or additionally, corresponding optical methods for detecting the orientation of the packages and controlling the displacement means can be used to achieve alignment with them. The orientation can z. B. done by the converter. The movable stop can also be used for alignment.

It makes sense if the stack is stabilized on the carrier during and / or after stacking. Thus, the individual layers retain their structure and the stacked carrier can be transported safely.

For stabilization after stacking (complete or individual layers), the stack can be stabilized together with the stacked support by wrapping with a film, mesh or the like. The wrapping can be done layer by layer during stacking or after stacking a layer. Here, the stabilization takes place within the actual device for Bestapeln. The already partially stacked carrier is lowered in layers to adjust the level for stacking. This is exploited as layers of the stack already formed may "slip down" and be wrapped layer by layer below the stack level while still stacking "up". This saves time. For this purpose, a film winding device is integrated directly into the device. This has the advantage that the carrier with formed stack does not have to be moved separately. Thus, stabilization can already take place after each lowering of a layer or layer. This has the consequence that even when not completely stably stacked carriers a great stability of the stack can be achieved. This also greatly expands the possibilities of stacking the goods and the selectable order.

Of course, as an alternative to the film winding technique, all other known possibilities of stabilization can be used. These include z. As film shrinking, nets and other stretchable materials and Velcro and adhesive joints, etc.

In the case of stacks, stabilization can take place by means of lateral, U-shaped lateral walls arranged around the stacking station or support so that it is possible to stack "against the wall". Both the side walls and the rear side wall can be adjustable or movable vertically and / or horizontally with respect to the stacking station. Thus, carriers of different sizes, etc., can be loaded and the walls serve as scrapers in connection with intermediate plates.

Depending on the packages to be stacked, it may be necessary to protect them or to increase the stackability, etc., layers, z. As cardboard or cardboard, between, below or above the layers insert. For this purpose, the sheet material can be stored in a suitable manner and / or delivered and placed with provided on the handling means suckers.

Both the carriers (eg pallets) and the layers (boards) can be delivered and provided via a separate conveyor technology. The acquisition or transfer of the carriers or layers can be done with dedicated technology.

In one embodiment, it is provided that an intermediate plate is provided at the level of the positioning conveyor above the carrier to be loaded. The intermediate plate provides a uniform smooth surface for stacking and allows further stacking despite carrier change.

The intermediate plate is preferably divided in the middle and each part designed to be displaceable sideways.

In one variant, the first layer of a stack is formed on the intermediate plate, while the completely loaded carrier of the previous stacking process is exchanged for a new empty carrier. Thus, the batching process can be continued without interruption. Once the first layer has been formed and the new carrier is present, the parts are moved to the side and the first layer is transferred to the underlying carrier on which it is then further stacked.

In a preferred alternative, the complete stacking process takes place on the intermediate plate and this is designed to be variable in height. This has the advantage that the transfer to the carrier takes place only after the stacking and this must not be "exchanged". This increases the overall throughput of the device. In addition, the possibly provided wrapping with stretch film is easier to carry out.

When moving apart or opening the intermediate plate, the lateral stabilization walls serve as Abtreifer, d. H. the intermediate plate moves laterally below the lower edges of the walls.

Increasingly, the provision of stacked packages in so-called trolley or roll container is required. These can easily be loaded into trucks and unloaded and moved on-site as they have rollers. In addition, they have side walls that allow stable stacking and good stabilization by stretch film, so that the transport is also safe. However, these properties bring about difficulties in automatic stacking.

According to the invention, it has been recognized that automatic stacking is reliably possible if the sidewalls of the rolling carriage are held bent upwards at least vertically or even slightly obliquely to the outside by a spreading device. Namely, the sidewalls have the property of moving towards each other inwardly.

Next, it has been found that the stacking of trolley can be facilitated if this is a separate and possibly height-adjustable intermediate plate is provided, which is arranged on the side facing away from the positioning conveyor of the stacking space or the carrier or inserted from this side in the trolley is.

Thus, alternately pallets etc. or trolleys can be stacked with the device according to the invention as desired.

As a scraper when passing the finished stack stack to the trolley by retracting the other intermediate plate can serve the rear side wall. In one embodiment, the rear side wall is also height-movable and / or movable in the direction of the positioning, so that different sized trolley can be used.

This preferably also serves as a mounting location for the Aufspreizeinrichtung.

The spreading device preferably consists of two at the same height in the region of the expected side walls of the trolley arranged from the side wall forward in the trolley space projecting pins which are laterally displaced to the outside for spreading. Preferably, the pins are each arranged on a vertically oriented turntable in the rear side wall.

For easy transport and handling within the system, the trolleys are moved on transport pallets that can be handled like normal pallets.

The invention will be explained in more detail with reference to the following description of exemplary embodiments and the drawing. Show it:

1 shows a schematic perspective view of an apparatus for automatic multi-layer stacking of pallets at the beginning of the formation of the first layer;

2 an enlarged schematic side view of the device 1 in the area of the endless conveyor;

3 a 2 corresponding view from another angle;

4 a 2 corresponding view from another angle;

5 a 2 corresponding view from above;

6 a 2 corresponding view after completion of the first layer;

7 a 1 corresponding view after the completion of further layers;

8A a schematic perspective view of a variant of a device for automatic multilayer Bestapeln;

8B an enlarged detail view of the common drive of the Einzelpusher;

9 a schematic perspective and enlarged view of the stacking of a variant of the device 1 when terminating the batch process;

10 a schematic perspective and enlarged view of the device 9 in the area of the stacking station in the transfer of the stack from the intermediate plate to a pallet;

11 a schematic perspective and enlarged view of the device 9 in the area of the stacking station when lowering the stack;

12 a schematic perspective and enlarged view of the device 9 in the area of the stacking station when wrapping the stack with foil and removal;

13 a schematic perspective view of the device 1 in the automatic multi-layer stacking of trolleys in the stacking area when stacking;

14 a schematic perspective view of the device 13 at a different angle, with the rear stabilizing wall omitted for clarity;

15 an enlarged view of the device 13 when spreading the trolley side walls and

16 a detailed view of the mechanism for spreading the trolley side walls.

In the 1 to 7 is one as a whole with 1 designated device for automatic multi-layer stacking of pallets P shown with packages W of different dimensions in a predetermined spatial arrangement. It is therefore a device for "mixed-case" palletizing. Of course, with the device 1 also only similar packages W are palletized.

The device 1 includes a roller conveyor 2 as a feed conveyor, which provides the separated packages W in a computer-aided predetermined order from a warehouse, not shown.

At the end of the roller conveyor 2 is a pusher 3 trained converter arranged, which converts the packages W by 90 degrees and delivers to the subsequent positioning conveyor. In this case, the packages W are also aligned at an angle, so far as possible due to their external shape, on the positioning conveyor 4 are aligned.

The positioning conveyor 4 is designed as an endless conveyor in the form of a circulating conveyor belt. Through him, the packages W are positioned in the X direction promoting to take this coordinate of the later position in the stack.

To exactly maintain the positioning or while the conveyor belt is running 4 perform is a stopper 5 (see. 4 ) is provided, which is driven in the X direction relative to the conveyor belt movable to "stop" the respective package. The drive takes place via a toothed belt (not shown), which is attached to the linear axis 5B is arranged and in the stopper 5 is mounted.

The positioning conveyor or the conveyor belt 4 is horizontal (on the same level) and along one side of the place 6 arranged for stacking. Usually, the carrier P to be loaded (pallet) will be arranged here (cf. 6 and 7 ).

However, as will become apparent, this is not the case with the formation of the first layer of a stack.

At the level of the upper run 7 of the endless conveyor 4 above the carrier P to be loaded is an intermediate plate 8th in the place 6 intended. The intermediate plate 8th is divided in the middle and every part 8A , B to the side (in the X direction) slidably designed such that the first layer of a stack on the intermediate plate 8th is formed while the completely loaded carrier P of the previous stacking operation is exchanged for a new empty carrier P. Thus, the batching process can be continued without interruption. When the first layer is formed and the new carrier P is present, the parts become 8A , B moved to the side (cf. 6 ) and the first layer is transferred to the underlying support P on which is subsequently further stacked (see. 7 ).

For feeding empty pallets or discharging stacked pallets is a corresponding roller conveyor 9 below the stacking place 6 intended.

From the roller conveyor, the respective pallet P of a lifting and lowering unit 10 for lifting and lowering the carrier P in the Y direction taken over and up to the stacking place 6 hazards. The lifting and lowering unit 10 is also responsible for the level adjustment in stacking per se, so if necessary when stacking a package W performs a stroke or a lowering and also performs the adjustment of the compensation of the layers at the beginning of a new layer.

From the conveyor belt 4 Thus, the respective package W is laterally in the place to the desired position in the stack 6 on the intermediate plate 8th (First layer) or the pallet P (other layers) deported in the Z direction.

For this displacement of the packages W to the predetermined position in the stack S, the apparatus comprises a sliding plate battery 11 and a pusher battery 12 , ie in each case a plurality of side by side horizontally and along the side of the stacking place 6 or the pallet P arranged individual sliding plates 13 and single pushers 14 ,

The sliding plates 13 grab between the upper strand 7 and the bottom strand 20 through the endless conveyor and take over the pusher 14 From the conveyor belt deported package W. Then push the pusher and the sliding plate together to the desired position and the sliding plate 13 is withdrawn while the pusher 14 to stop the package W stops. Thus, the package W is positioned. The sliding plates 13 run flat at the front (cf. 2 ) so that positioning can be as accurate as possible.

The sliding plates 13 are each as horizontal and along the side of the stacking place 6 and formed transversely thereto designed flat strip-shaped plate, which in the direction of the stacking place 6 run thinner.

The sliding plates 13 are on the opposite side of the carrier of the endless conveyor 4 suspended and arranged parallel and side by side. They are each on a Z-direction aligned linear axis 16 slidably back and forth movable. The drive is per axle via an electric motor 16E and a toothed belt (not shown), which is arranged on the linear axis and in which the carriage or the sliding plate 13 is mounted.

The sliding plate battery 11 thus forms an optional broadening of the endless conveyor 4 in the stacking place 6 into it.

The pushers 14 are horizontal and along the side of the stacking place 6 and the carrier P along the endless conveyor 4 and formed in alignment with each other and independently movable. They are arranged on the opposite side of the carrier of the endless conveyor or are there in the rest position to the conveyor belt 4 to extend the removal of packages.

The pushers are as the sliding plates over the entire length of the stacking place 6 or the pallet P and arranged on a clamped above the endless conveyor frame 17 attached. There they are each aligned on a Z-direction linear axis 18 slidably back and forth movable. The drive is per axle via an electric motor 18E and via a toothed belt (not shown), which is arranged on the linear axis and in which the carriage or the pusher 14 is mounted.

Both the stopper 5 as well as the pushers 14 extend from the respective linear axis down to a height just above the surface of the conveyor belt 4 and have at the local end on an enlarged foot area to handle the packages W better and safer.

Below the stacking place 6 is a unit 19 provided for wrapping the formed stack S with a film.

The wrapping is done layer by layer when stacking or after stacking a layer. The carrier P with the already formed layers of the stack S is from the lifting and lowering unit 10 , gradually, lowered downwards and so drives through the ring-shaped unit 19 for wrapping.

When the entire stack S has been completed, the stack S on the pallet P is moved downwards and over the roller conveyor 9 removed.

At the same time, the intermediate plate 8th closed and continued on this to form the next batch of the next order.

Parallel to this, as already described above, a new empty pallet P is "loaded".

Overall, therefore, the order and spatial position of the packages W on the pallet P for the establishment of a stack S based on the underlying job for automatic stacking of packages W on a pallet P in a predetermined spatial arrangement for forming a stack S computer-aided determined.

Then, the packages W in a predetermined order required by means of the feed conveyor 2 isolated from a warehouse etc. without aids (trays, etc.). The too loading packages W are then from the feed conveyor 2 through the converter 3 on the endless conveyor 4 implemented.

By means of this, the stopper 5 and the pusher battery 12 and sliding plate battery 11 is the respective package W to the predetermined spatial position on the pallet P (or the stack 6 or intermediate plate 8th ) transported in the forming stack.

Depending on requirements, the pallet P in Y-direction through the corresponding unit 10 lowered or raised.

In 8A and 8B an alternative variant of the device described above is shown, which differs essentially from the fact that the individual pushers of the pusher battery each have no own drives and that no sliding plate battery is provided.

Therefore, only these differences will be discussed below.

In this variant, the single pushers have two common drives 21 . 22 on, which can be coupled with either a specific Einzelpusher to its drive. These are the drives 21 . 22 in the X direction on the frame 17 above the Einzelpusher by means of a Traverse 21T . 22T movable and with the drive carriage 23 the single pusher 14 coupled.

The drive 21 . 22 each has an actual drive block 24 . 25 on, which is movable in the Z direction analogous to the above embodiment of the pusher. To the respective single pusher 14 drive has the drive block 24 . 25 one in the direction of the drive carriage 23 pointing dome nose 26 on, in a direction transverse to the X-direction groove 27 in the drive carriage 23 intervenes.

To drive a particular single pusher is the drive 21 or 22 , depending on the individual pusher, move it by means of the traverse so that the corresponding coupling nose 26 in the groove 27 of the respective drive carriage 23 intervenes. Subsequently, the drive block 25 respectively. 25 move and takes the drive carriage 23 or the single pusher 14 in the Z direction with.

The Einzelpusher are thus hung on a frame on which they are in the Z direction on the stack to (or away) movable. For this purpose, they are approached by a carriage, which is transverse to it, that is to say in the X-direction, and which carries the drive, wherein a coupling or driving element thereby establishes the operative connection between the drive and the individual pusher.

In detail, this is in 8B better recognizable. It can also be seen that the driver element (Kupelnase 26 ) while leaf-shaped or strip-shaped from the drive or its Verfahrraverse 21T . 22T hangs down and into an upwardly open groove 27 on the drive carriage of or the adjacent Einzelpusher 14 intervenes, what the driver 26 has a corresponding width, so that it by appropriate positioning either in the groove 27 a single pusher or in the two grooves 27 adjacent single pusher 14 can intervene.

Another difference in this variant is the use of only two sliding plates 13 that now has a drive 28 . 29 in the X-direction along the stacking place 6 can be moved, so that the respective sliding plate can be positioned according to a single pusher. For this purpose, the respective linear axis of the sliding plate is designed to be movable analogously to a traverse.

It is also possible to control both sliding plates together, so that a package W rests on both sliding plates simultaneously. Obviously, this can be done with appropriate control and use of z. B. two Einzelpushern be combined.

In the 9 to 16 Further details of the design of the stacking place (stacking aids, intermediate plates) etc. will be described.

Here is the intermediate plate 8th not only to form the first layer of the stack S, but for the entire stack S. This is completely passed to the waiting pallet P only after completion, with the side walls 41 serve as a scraper.

For this to work, the intermediate plate 8th or their parts 8A , B height adjustable on a lifting frame 40 suspended, so that it can be lowered after completion of each situation downwards so that the stacking level is at the level of the positioning conveyor.

When the stack S is finished, the parts become 8A , B of the intermediate plate 8th to the side below the edge of the side walls 41 (in the X direction) moves, with the packages or the stack in the stack 6 remains and after complete removal of the intermediate plate 8th to rest on the waiting pallet P (cf. 9 and 10 ).

The pallet P is loaded further loaded with the stack S and goes through (as above) a winding unit 19 for wrapping with stretch film for stabilization (cf. 11 and 12 ).

At the same time, the intermediate plate 8th closed again and a new stacking can be started.

Subsequently, the pallet with the stack of the fork-like carrier 42 the lifting and lowering unit 10 * on a roller conveyor 9 handed over for removal or unloaded. The lifting and lowering unit 10 * corresponds largely to the previously described, but is now a one-beam lifter.

Subsequently, a new blank pallet is picked up for the new stack and lifted into the waiting position below the intermediate plate.

In the 13 to 16 is a schematic perspective view of the just discussed device for automatic multilayer Bestapeln shown, now with a trolley R in the stacking area 6 is arranged when stacking.

The device 30 So it is not only suitable for loading pallets P, but also for loading trolleys R.

The trolleys R are from the same conveyor 9 supplied or transported away like the pallets. These are the trolley R on carrier pallets 43 (see. 14 ), which can be handled like normal pallets.

The trolleys R are also from the lifting and lowering unit 10 * from below into the stacking place 6 retracted.

To spread apart the side walls RS of the trolley R is a Aufspreizeinrichtung 44 provided, which holds the side walls RS bent at least perpendicular or even slightly inclined to the outside during stacking.

Namely, the side walls RS have the property of moving toward each other inwardly.

Since the side walls RS of the trolley R with the parts 8A , B correspond to the intermediate plate and their use is thus not possible, there is for the stacking of trolley R a separate and height-adjustable intermediate plate 45 on the positioning conveyor 2 opposite side of the stacking place 6 is arranged.

It is after spreading the side walls RS from this page in the trolley R in the Z direction by means of a drive 51 slidably inserted. The intermediate plate 45 is for height adjustment analogous to the intermediate plate 8th on a lifting frame 50 hung.

Subsequently, as before, the stack S by placing the packages W on the intermediate plate 45 educated.

As a scraper when passing the stacked stack to the trolley R by retracting the other intermediate plate 45 serves the rear side wall 46 (This is for a better overview in 14 omitted). The rear side wall 46 is also height-adjustable to the hub or the lowering of the intermediate plate 45 "To join" and in the direction of the positioning conveyor 2 or stacking place 6 (Z-direction) movable, so that different sized trolley can be used.

The rear side wall 46 also serves as a mounting location for the spreading device 44 ,

The spreading device 44 consists of two at the same height in the region of the expected side walls of the trolley R arranged from the side wall forward into the trolley space projecting pin 47 , which are laterally displaced to the outside for spreading. These are the cones 47 each on a vertically oriented turntable 48 arranged by a common drive 49 be driven over a circulating rope. The drive is on the rear wall of the rear side wall 46 arranged (cf. 15 and 16 ).

When inserting the trolley are the pins 47 so inside. After insertion, they are rotated by means of a turntable 48 shifted to the outside and thus spread the side walls RS.

When the batching process is finished, the pins become 47 moved back inside and the intermediate plate 45 at the serving as Abtreifer rear side wall 46 withdrawn, so that the stack S of the packages W comes to rest on the trolley R.

Then this is done by means of the lifting and lowering unit 10 through the film winding unit 19 and finally on the roller conveyor 9 moved to the removal.

After that, the process can start again.

Claims (9)

Device for automatically stacking packages on a base in a predetermined spatial arrangement to form a stack with At least one feed conveyor ( 2 ) providing the separated packages (W) in a predetermined order; - with a lifting and lowering unit for lifting and lowering one in a stacking place ( 6 ) arranged underlay (P, 8th ) in the Y direction; With displacement means adjacent to a discharge end of the feed conveyor, the packages (W) from the feed conveyor ( 2 ) and transport to the predetermined position in the stack (S); the displacement means comprising: a positioning conveyor adjacent to the delivery end of the supply conveyor ( 4 ) horizontally and longitudinally to one side of the stacking station ( 6 ) is arranged to position the packages (W) in the X direction, - at least one sliding plate ( 13 ) and a pusher ( 14 ) to transport the packages (W) from the positioning conveyor in the Z-direction to the predetermined position in the stack (S), the at least one sliding plate being horizontal and along the side of the stacking station (Fig. 6 ) and transversely formed thereto flat strip-shaped plate is formed to the packages (W) when pushing the packages (W) by the pusher of the positioning conveyor ( 4 ) at the X-direction position and in Z-direction on the base (P, 8th . 45 ) or in the stack (S), characterized in that the positioning conveyor as an endless conveyor ( 4 ) is formed and the at least one sliding plate ( 13 ) between the upper strand ( 7 ) and bottom strand ( 20 ) of the endless conveyor ( 4 ) reaches through. Device according to claim 1, characterized in that the endless conveyor ( 4 ) comprises a circulating endless belt. Apparatus according to claim 1 or 2, characterized in that the endless conveyor ( 4 ) forms a uniform surface. Device according to one of the preceding claims, characterized in that above the endless conveyor ( 4 ) in X-direction, optionally also in Z-direction, movable stop ( 5 ) is arranged for the arranged on the endless conveyor packages for fine positioning of the position in the X direction. Device according to one of the preceding claims, characterized in that the positioning conveyor ( 4 ) on a rack ( 17 ) is attached. Device according to claim 5, characterized in that the frame ( 17 ) is designed to be movable. Device according to one of the preceding claims, characterized in that between feed conveyor and positioning conveyor ( 4 ) a converter ( 3 ) is provided. Device according to one of the preceding claims 1 to 6, characterized in that the feed conveyor ( 2 ) on the positioning conveyor ( 4 ) ends for direct application of the packages. Device according to one of the preceding claims, characterized in that the positioning conveyor has stop lamellae.

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