WO2014005892A1

WO2014005892A1 - Device for layered stacking a support

Info

Publication number: WO2014005892A1
Application number: PCT/EP2013/063341
Authority: WO
Inventors: Jörg Cavelius
Original assignee: Dematic Gmbh
Priority date: 2012-07-06
Filing date: 2013-06-26
Publication date: 2014-01-09
Also published as: DE102012106110B4; DE102012106110A1

Abstract

The invention relates to a device for automatically stacking packages on a support comprising: at least one feed conveyor; -a lifting and lowering unit for lifting and lowering a support (8) in the Y-direction; a continuous positioning conveyor (4) which adjoins an output end of the feed conveyor in order to position the packages (W) in the X-direction; at least one sliding plate (13) and a pusher in order to transport the packages (W) from the positioning conveyor in the Z direction to the predetermined position in the stack (S). Said sliding plate (13) is designed as a plate so that is can move horizontally in order to transfer the packages (W) by pushing them with the pusher from the positioning conveyor (4) to the X direction position and to arrange them on the support (8). Said sliding plate (13) can be moved into a position between the upper rim and the lower rim of the continuous positioning conveyor (4).

Description

Device for multilayer stacking a pad

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 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., However, here are packages with uniform size or extent by robots, grippers etc. 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. Different aspects have to be taken into account, which enormously increase the complexity compared to the "simple" manual stacking of simple regular geometries, so that a subsequent package can only be stacked on a previous package if it has a flat surface, which should also be oriented approximately horizontally, and if the package can carry the weight of the other packages deposited on it without damage.

Furthermore, the stack formed should have a certain stability, including 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 done 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 goods are extremely high and are not yet met only partially by the known methods and devices.

EP 1 462 394 B1 discloses a device for automatically loading a load carrier with packing units forming a loading stack, that is to say a device for palletizing. 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. Then push another pusher and a loading tongue simultaneously the packing unit in the direction of the loading depth on the pallet to the

Loading coordinates are achieved in the Z direction. Then the drives

Loading back with the pusher stops and serves as a scraper, so that the packing unit on the pallet in the desired place "free falling" is deposited.The stack is supported by a loading aid on the other three sides However, shifting on the packing table is time-consuming and has disadvantages in forming the packing pattern due to its limited accessibility, and it is imperative that the loading tongue and the wiper / pusher move simultaneously in the X-direction only one packing unit can be "processed" sequentially. From WO 2010/059923 A1 an automatic robot-supported device for stacking is known, in which an intermediate plate for forming the first layer of a stack and simultaneous pallet change is used.

In contrast, the object of the present invention is a device for automatically stacking packages on a carrier in a predetermined provide a spatial arrangement for forming a stack, which allows a flexible manner mixed-case stacking with high throughput.

This object is achieved by the reproduced in claim 1 device. Advantageous embodiments will be 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. There are several

Packages transported and relocated simultaneously. 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 an endless conveyor in the context of the invention are belt conveyors, belt conveyors, chain conveyors,

Belted belt conveyor, slat belt conveyor into consideration.

Preferably, 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

The surface of the endless conveyor does not even have to be stopped, but can continue to run while the packages "glide" on its surface.

Also possible is the use of abutment slats on the endless conveyor, especially on the top of the upper run, for accurate 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 blades could also rotate.

If no single pusher is used as in the prior art, but the pusher as an arrangement of a plurality of horizontally and along the side of

Stapelplatzes arranged Einzelpusher is formed, that is designed as a battery that make the removal of the packages from the positioning in the direction of the stack, the Einzelpusher are independent of the at least one slide plate in the Z direction movable to the package at

Retracting the sliding plate retention, 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

Mitnehmerelement depends leaf or strip-shaped from the drive or

its VerTraise traverse down and engages in an upwardly open groove on the drive carriage of the or the adjacent Einzelpusher, including 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 over the entire length of the

Positioning conveyor extend, then the Einzelpusher in X-direction or Direction of conveyance of the positioning are made immovable. 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 movable horizontally and along the side of the stacking station and transversely thereto

trained flat strip-shaped plate formed in the direction of

Stacking place runs thinner. The sliding plate is on the carrier

suspended from the opposite side of the positioning conveyor. 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 e.g. via a toothed belt, a rack, etc. done. It is understood that the sliding plate depending on the design of the

Positioning conveyor engages under or through this 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 you

can be moved independently of each other, several packages can be moved simultaneously on the carrier or in 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 sliding plate is then preferably "assigned" to a Einzelpusher and arranged with the Einzelpusher in a vertical plane, ie viewed from above one above the other aligned arranged. The sliding plates can be designed analogous to the Einzelpusher (see above) also with common drives.

It is also possible to control selected individual pushers together so that e.g. Two to four adjacent individual pushers 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 individual pushers and the sliding plates, the frame forms a modular pusher slide plate unit.

In automatic systems and processes of high complexity such as

In spite of all planning, the present situation causes disturbances, e.g. because a package falls down during stacking. Then a manual intervention by an operator is necessary. In order to facilitate their intervention or is in one

Embodiment therefore provided that frame is movable together with the unit of pushers and sliding plates away from the stacking place, which can be done manually or powered. 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 troubleshooting 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, together with the shuttle car, transports the package to the desired X position so that the package is transported between the pusher and the side stop of the carriage so that high acceleration and positioning speeds are avoided a Danger of shifting, falling, etc. 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 are stacked continuously. It can therefore be stacked in succession to the carrier in addition to the course, of course, also manageable uniform little demanding packages packages with different dimensions.

The packages are a wide variety of goods, packaged goods, goods packed in groups, such as boxes, crates, boxes, containers, goods on trays,

Packing units, such as Foil packaging of plastic bottles, etc., as well as individual articles 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.

Under feed conveyors are conveyors in general and in particular

Roller conveyors, conveyor belts and conveyor systems understood. 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 have groups of identical or very similar packaged or unpacked

Group packages for common handling. This grouping then takes place either in the area of taking over the packages of the

Feeding conveyor by the displacement means or already when loading 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 before the takeover by the

Shifting be aligned. 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 alignment may e.g. 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 e.g.

Film shrinking, nets and other stretchable materials as well as Velcro and

Adhesive joints etc.

In stacks itself can stabilize by lateral, U-shaped around the

Stacked or side walls arranged so that "against the wall" can be stacked., Both the side walls and the rear

Sidewall can be adjustable or movable vertically and / or horizontally with respect to the stacking place. 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 increase the stackability, etc., layers, e.g. cardboard or cardboard, between, below or above the layers. For this purpose, the sheet material can be stored in a suitable manner and / or delivered as well as to the

Handling means provided suckers are placed.

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

In one embodiment it is provided that at the level of

Positioning conveyor above the load to be loaded carrier an intermediate plate is provided. 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 fully loaded carrier of the previous stacking process underneath 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 instead 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 does not have to be "exchanged" .This increases the overall throughput of the device.Also so 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, i. the intermediate plate moves laterally below the lower edges of the walls.

The provision of the stacked packages in so-called

Trolley or roll container 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 bring

Characteristics difficulties with automatic stacking with itself.

According to the invention it has been recognized that an automatic stacking is reliably possible if the side walls of the trolley by a

Spreading at least vertically or even slightly inclined bent outwards. Namely, the sidewalls have the property of moving towards each other inwardly. Next 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 of the stacking station or the carrier or can be inserted from this side into the trolley. 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.

Further details of the invention will become apparent from the following description of exemplary embodiments with reference to the drawing, in which Fig. 1 is a schematic perspective view of a device for

showing automatic multilayer stacking of pallets at the beginning of formation of the first layer;

Fig. 2 is an enlarged schematic side view of the device of FIG.

1 in the area of the endless conveyor shows;

Fig. 3 is a view corresponding to Figure 2 from a different angle;

Fig. 4 is a figure 2 corresponding view of yet another

Perspective; a view corresponding to Figure 2 from above; a view corresponding to Figure 2 after the completion of the first layer; a view corresponding to Figure 1 after the completion of further layers; a schematic perspective view of a variant of a device for automatic multilayer Bestapeln; an enlarged detail view of the common drive of

Single Pusher; a schematic perspective and enlarged view of the stacking space of a variant of the apparatus of Figure 1 when terminating the stacking operation; a schematic perspective and enlarged view of the device of Figure 9 in the region of the stacking place in the transfer of the stack from the intermediate plate to a pallet; a schematic perspective and enlarged view of the device of Figure 9 in the region of the stacking station when lowering the stack; a schematic perspective and enlarged view of the device of Figure 9 in the region of the stacking place when wrapping the stack with foil and removal; a schematic perspective view of the device of Figure 1 during automatic multi-layer stacking of trolleys in the stacking area when stacking; Figure 14 is a schematic perspective view of the device of Figure 13 at a different angle, with the rear stabilizing wall omitted for clarity; Fig. 15 is an enlarged view of the device of Figure 13 at

Spreading the trolley side walls and

16 is a detail view of the mechanism for spreading the

Trolley side walls.

In FIGS. 1 to 7, a device designated as a whole by 1 for the automatic multi-layer stacking of pallets P with packages W is shown

different extent shown in a predetermined spatial arrangement. It is therefore a device for "mixed-case" palletizing.Of course, with the device 1, only similar packages W can be palletized.

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

At the end of the roller conveyor 2 designed as a pusher 3 converter is 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 that they are so far possible due to their outer shape, aligned on the positioning conveyor 4.

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.

In order to comply exactly with the positioning or to carry out while the conveyor belt 4 is running, a stopper 5 (see FIG. 4) is provided, which is actuated movably in the X direction relative to the conveyor belt, around the respective package

The drive takes place via a toothed belt (not shown), which at the Linear axis 5 B is arranged and in which the stopper 5 is mounted.

The positioning conveyor or the conveyor belt 4 is arranged horizontally (on the same level) and along one side of the place 6 for the stack formation. Usually, the carrier P to be loaded (pallet) will be arranged here (compare Figures 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 strand 7 of the endless conveyor 4 above the carrier P to be loaded, an intermediate plate 8 is provided in the space 6. The intermediate plate 8 is split in the middle and each part 8A, B laterally (in the X direction) configured displaceable, that the first layer of a stack is formed on the intermediate plate 8, while the fully loaded carrier P of the previous stacking operation against a new empty carrier P is exchanged. Thus, the batching process can be continued without interruption. If the first layer is formed and the new carrier P is present, the parts 8A, B are moved to the side (see FIG. 6) and the first layer is transferred to the underlying carrier P, on which it is subsequently further stacked (see FIG ).

For feeding empty pallets or discharging stacked pallets is a

corresponding roller conveyor 9 is provided below the stacking station 6.

From the roller conveyor, the respective pallet P is taken over by a lifting and lowering unit 10 for raising and lowering the carrier P in the Y direction and moved up to the stacking station 6. The lifting and lowering unit 10 is also for the

Level adjustment when stacking in charge, so if necessary when stacking a package W performs a stroke or a lowering and also performs the

Adjustment of the leveling of layers at the beginning of a new shift.

From the conveyor belt 4, the respective package W is thus deported to the desired position in the stack laterally in the space 6 on the intermediate plate 8 (first layer) and the pallet P (other layers) in the Z direction. For this displacement of the packages W to the predetermined position in the stack S comprises the device a sliding plate battery 1 1 and a pusher battery 12, that is in each case a plurality of juxtaposed horizontally and along the side of the stacking place 6 and the pallet P arranged individual sliding plates 13 and individual pushers 14th

The sliding plates 13 engage between the upper run 7 and the lower run 20 of the endless conveyor and take over the pusher 14 of

Subsequently, the pusher and the slide plate move together to the desired position, and the slide plate 13 is retracted while the pusher 14 stops to restrain the package W. Thus, the package W is positioned. The sliding plates 13 run flat at the front (see Figure 2), so that the positioning can be done as accurately as possible.

The sliding plates 13 are each as horizontal and along the side of the

Stacking station 6 and formed transversely thereto formed flat strip-shaped plate, which run in the direction of the stacking place 6 thinner.

The sliding plates 13 are suspended on the opposite side of the carrier of the endless conveyor 4 and arranged in parallel and side by side. They are in each case in a Z-direction aligned linear axis 16 slidably back and forth movable. The drive takes place 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 1 1 thus virtually forms an optional widening of the endless conveyor 4 into the stacking space 6.

The pushers 14 are formed horizontally and along the side of the stacking station 6 and the carrier P along the endless conveyor 4 and aligned 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 extend over the conveyor belt 4 for pushing away packages. The pushers are like the sliding plates also over the entire length of the Stacking 6 and the pallet P arranged and attached to a clamped above the endless conveyor frame 17. There they are in each case on a Z-direction aligned linear axis 18 slide back and forth movable. The drive takes place 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 and 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 station 6, a unit 19 is provided for wrapping the stack formed 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 lowered by the lifting and lowering unit 10, gradually, down and so passes through the annular unit 19 for wrapping.

When the entire stack S has been completed, the stack S is moved down on the pallet P and transported away via the roller conveyor 9.

At the same time, the intermediate plate 8 is closed and further stacked 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 are required in a predetermined order isolated by means of the feed conveyor 2 from a warehouse etc. without aids (trays, etc.) brought. The packages W to be loaded are then transferred by the feed conveyor 2 through the converter 3 onto the endless conveyor 4. By means of this, the stopper 5 and the pusher battery 12 and sliding plate battery 1 1, the respective package W is transported to the predetermined spatial position on the pallet P (or the stacking station 6 or intermediate plate 8) in the stack being formed. As required, the pallet P is lowered or raised in the Y direction by the corresponding unit 10.

FIGS. 8A and 8B show an alternative variant of the previously described device, which differs essentially from the fact that the individual pushers of the pusher battery each have no separate drives and that none

Sliding plate battery is provided.

Therefore, only these differences will be discussed below. In this variant, the individual pusher on two common drives 21, 22, which can be coupled with either a particular Einzelpusher to the drive either. For this purpose, the drives 21, 22 in the X direction on the frame 17 above the

Einzelpusher by means of a traverse 21 T, 22T movable and with the

Drive slide 23 of the single pusher 14 coupled.

The drive 21, 22 in each case has an actual drive block 24, 25, which can be moved in the Z direction analogously to the above embodiment of the pusher. In order to drive the respective individual pusher 14, the drive block 24, 25 has a coupling nose 26 pointing in the direction of the drive carriage 23, which engages in a groove 27 extending transversely to the X direction in the drive carriage 23.

To drive a particular single pushers, the drive 21 or 22, depending on the individual pusher, moved by means of the traverse so that the corresponding

Coupling nose 26 engages in the groove 27 of the respective drive carriage 23.

Subsequently, the drive block 25 or 25 is moved and takes the Drive slide 23 and 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.

This is more clearly seen in detail in FIG. 8B. It is also recognizable that that

Carrier element (Kupelnase 26) while sheet or strip-shaped from the drive or its Verfahrraverse 21T, 22T hanging down and engages in an upwardly open groove 27 on the drive carriage or the adjacent Einzelpusher 14, to which the driver 26 has a corresponding width so that it can intervene by appropriate positioning either in the groove 27 of a Einzelpushers or in the two grooves 27 adjacent Einzelpusher 14.

Another difference in this variant is the use of only two sliding plates 13, which are now movable via a drive 28, 29 in the X direction along the stacking station 6, 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, with appropriate control and use of e.g. two single-handed.

Further details of the configuration of the stacking station (stacking aids, intermediate plates) etc. are described in FIGS. 9 to 16.

Here, the intermediate plate 8 serves not only to form the first layer of the stack S, but for the entire stack S. This is only completely passed to the waiting pallet P after completion, with the side walls 41 serve as a scraper. For this to work, the intermediate plate 8 or its parts 8A, B

height-adjustable suspended from a lifting frame 40 so that it can be lowered after completion of a situation each down so that the stack level is at the height of the positioning conveyor.

When the stack S is completed, the parts 8A, B of the intermediate plate 8 are moved laterally below the edge of the side walls 41 (in the X direction), leaving the packages or stack in the stacking station 6 and after complete removal of the stack Intermediate plate 8 to rest on the waiting pallet P comes (see Figures 9 and 10).

The pallet P is further lowered with the stack S loaded and passes (as above) a winding unit 19 for wrapping with stretch film for stabilization (see Figures 1 1 and 12).

At the same time, the intermediate plate 8 was closed again and a new

Stacking can be started.

Subsequently, the pallet is transferred to the stack of the fork-like support 42 of the lifting and lowering unit 10 ^* on a roller conveyor 9 for removal or unloaded. The lifting and lowering unit 10 ^* largely corresponds 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.

FIGS. 13 to 16 show a schematic perspective view of the device for automatic multi-layer stacking just discussed, wherein a trolley R is now arranged in the region of the stacking station 6 during stacking.

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

The trolley R are to be supplied from the same conveyor 9

transported away like the pallets. These are the trolley R on carrier pallets 43rd (see Figure 14) arranged, which can be handled like normal pallets.

The trolley R are also retracted from the lifting and lowering unit 10 ^* from below into the stacking station 6.

To spread apart the side walls RS of the trolley R, is a

Spreading device 44 is provided, which holds the side walls RS bent at least perpendicular or even slightly inclined to the outside during the staple. Namely, the side walls RS have the property of moving toward each other inwardly.

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

It is introduced by spreading the side walls RS of this page in the trolley R in the Z direction by means of a drive 51 like a slide. The intermediate plate 45 is suspended for height adjustment analogous to the intermediate plate 8 on a lifting frame 50.

Subsequently, as before, the stack S is formed by depositing the packages W on the intermediate plate 45.

As a scraper when passing the stacked stack to the trolley R by retraction of the further intermediate plate 45 is the rear side wall 46 (this is omitted for clarity in Figure 14). The rear side wall 46 is also height movable to the hub or the lowering of the intermediate plate 45 "mitzumachen", and in the direction of the positioning conveyor 2 and stacking 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 in the trolley space projecting pin 47, which are laterally displaced to the outside for spreading. For this purpose, the pins 47 are each arranged on a vertically oriented turntable 48, which are driven by a common drive 49 via a circulating cable. The drive is arranged on the rear wall of the rear side wall 46 (compare FIGS. 15 and 16).

When inserting the trolley, the pins 47 are thus inside. After insertion, they are displaced by means of a rotation of the rotary disks 48 to the outside and thus spread the side walls RS on.

When the stacking operation is completed, the pins 47 are moved back inwards and the intermediate plate 45 is retracted on the rear side wall 46 serving as a stripper, so that the stack S of the packages W comes to lie on the trolley R.

This is then by means of the lifting and lowering unit 10 through the

Film winding unit 19 and finally moved on the roller conveyor 9 for removal.

After that, the process can start again.

Claims

claims

1 . Apparatus for automatically stacking packages on a base in a predetermined spatial arrangement to form a stack comprising: - at least one feed conveyor providing the singulated packages (W) in a predetermined order;

with a lifting and lowering unit for lifting and lowering one in one

Stacking (6) arranged pad (P, 8) in the Y direction;

with at a discharge end of the feed conveyor adjacent

Displacement means which take packages (W) from the feed conveyor (2) and transport them to the predetermined position in the stack (S);

wherein the displacement means comprise:

a positioning conveyor (4) adjacent to the discharge end of the supply conveyor and arranged horizontally and longitudinally to one side of the stacking station (6) for positioning the packages (W) in the X-direction,

at least one slide plate (13) and a pusher (14) for transporting 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 (6) and formed transversely movable flat strip-shaped plate is formed to take over the packages (W) when pushing the packages (W) by the pusher of the positioning at the X-direction position and in the Z direction on the substrate ( P, 8, 45) or in the stack (S), characterized in that

the positioning conveyor is designed as an endless conveyor.

2. Apparatus according to claim 1, characterized in that the endless conveyor comprises a circulating endless belt.

3. Apparatus according to claim 1 or 2, characterized in that the endless conveyor forms a uniform surface.

4. Device according to one of the preceding claims, characterized

characterized in that the at least one sliding plate between the upper run and lower run of the endless conveyor engages.

5. Device according to one of the preceding claims, characterized

characterized in that above the endless conveyor in the X direction, optionally also in the Z direction, movable stop for the arranged on the endless conveyor packages for fine positioning of the position in the X direction is arranged.

6. Device according to one of the preceding claims, characterized

in that the positioning conveyor (4) is fastened to a frame (17).

7. Device according to one of the preceding claims, characterized

characterized in that the frame (17) is designed to be movable.

8. Device according to one of the preceding claims, characterized

in that a converter is provided between the feed conveyor and the positioning conveyor.

9. Device according to one of the preceding Ansprüchel to 7, characterized in that the feed conveyor terminates at the positioning conveyor for direct application of the packages.

10. Device according to one of the preceding claims, characterized

characterized in that the positioning conveyor has stop lamellae.