WO1997045352A1

WO1997045352A1 - Complementary palletizing method and peak stacker

Info

Publication number: WO1997045352A1
Application number: PCT/DE1997/001053
Authority: WO
Inventors: Andreas Pless
Original assignee: System Gmbh
Priority date: 1996-05-24
Filing date: 1997-05-21
Publication date: 1997-12-04
Also published as: DE19620967A1

Abstract

'Peak stacker' for signatures bundled into packages and/or stacks, and preferably with each package strapped. The peak stacker (1) is designed so that packages (6, 7, 8) formed according to a palletizing method are placed and positioned in it. The packages (6, 7, 8) positioned in the peak stacker (1) can each be raised or lowered, and one or more next packages can be positioned under or over the one or more preceding packages raised or lowered, for complementary formation of a spatial stack. The peak stacker (1) possesses devices (4) for raising or lifting and for depositing the one or more packages lifted on the positioned lower package, or for raising of one or more lowered packages under the positioned following package, and for transporting the packages assembled into a partial stack; they are transported to the transfer station (5) for palletizing. The invention also concerns a complementary palletizing method that is suitable for forming standard packages, as well as peak and complementary packages that add up to the height of standard packages.

Description

Complementary palletizing and top stacker

The invention relates to a palletizing method for forming stacks with nieluer adjacent and stacked packages of signatures, which are bundled in standard packages and top packages with a lower height than the height of the standard package smd, and a top stacker for signatures bundled into packages and preferably strapped per package , with which the packages formed are placed and positioned when the number of pieces of a partial stack is reached.

The individual copies of printed matter are called signatures. Signatures with the same print image and format form a so-called task

Large numbers of signatures are combined into packages for dispatch and preferably strapped, the packages often being palletized. There are often very considerable fees for shipping, so there are a number of shipping cost optimization programs that optimize depending on the age, weight and format of the signatures or printed products according to different criteria. Known methods of package formation are, for example, postal items and info post, the latter being easier and serious info post is distinguished.

If the entirety of the signatures of a task is to be assigned according to certain criteria, for example according to destination information, the signatures form an destination information, for example a postal code, a group or a partial lot

The individual parcels are to be strapped at light info post. This means that when the postal code changes, the parcel of the preceding zip code has to be closed and strapped. There are therefore no packages in which two different postcodes or - -

Signature groups occur. The group membership is readable from the information on the top copy of the stack. Top packages usually occur, i.e. packages with a smaller number of signatures than those contained in standard packages, when switching from one destination group to the next.

Standard packages are also referred to as a variety with the same base area and height or number of copies. With the procedure for packet formation according to Leichti Infopost, there are no requirements regarding the assignment of individual copies to specific batches within the postcode. It is up to the batch program how the batch formation is carried out within the postcode group.

With the heavy Infopost there is no need for strapping because the individual copies are larger and heavier than with the light Infopost and the stacks also hold without strapping, which means that individual identification is sufficient. With the heavy Infopost there are no top packages, because the group change can be stacked hmweg Here the programmer is free to choose how the stack is formed within the pallet.

When creating parcels using the postal sales procedure, prefabricated bundle labels must be placed on the individual parcels according to the plan. The parcels must be created exactly according to the plan. Top packages are made if and as specified in the plan. However, the top packages can be stored on the pallet as required.

Essential aspects of palletizing are the achievable volume utilization and the stability of the stack on the pallet. Inserting intermediate sheets increases stability, but this presupposes that there are joints of the same height between partial stacks. The layers can also be mirrored alternately for stabilization

A high volume utilization is important in order to be able to accommodate as many parcels as possible and therefore copies on a pallet and, above all, exactly the number of copies on the pallet that the Postage OptimiemngspiOgiamm specified. If the pallet is already full, Before the specified number of copies has been reached, another pallet must be started, on which of course little can be loaded if the plan is not to be left completely, according to postage optimization

From DE 40 26 449 C2, a palletizing method is known, which is also referred to as "chaotic palletizing". Parcels are stacked according to their base area and height. The packets are fed on a belt in any order and used according to length, width and height. They then run up a predetermined number of intermediate compartments that are accessible to a robot. The robot always selects the package from the compartments according to the specifications of the program, which is the turn to form a chaotic pallet assignment according to the program, which is considered advantageous. In this case, packages of the same height are preferably placed side by side in groups in order to form the largest possible coherent flat surfaces or joints. However, this always depends on the random composition of the given package formats. In order to be able to palletize almost in layers, complicated program niches are required, which, however, usually fill the volume with very poor utilization and low stability of the pallet.

The invention is based on the technical problem of developing a palletizing method with which stacks can be formed which, with a plurality of packages arranged one above the other and next to one another, enable great stability and inexpensive use of volume to be achieved with high educational speed, and to design the machine devices in such a way that the implementation of such a procedure is possible.

The invention solves this problem in that the number of signatures per standard package are determined in the above-described method from the lot size of a task and the total height of a standard stack to be optimally used for volume, that a complementary package for one peak package or several peak packages is formed, the height and stack with the one lace package or the plurality of lace packages has the height of a standard package, and that a plurality of partial stacks arranged side by side, each consisting of at least one standard package or a lace package and a complementary package or more Lace packages and a complementary package to form a level of equal height or a joint as well as a generic tip stacker, by means of which the at least one previously positioned package can be raised or lowered and the at least one subsequent package for complementary formation of a partial stack can be positioned under the raised or above the lowered leading package, the tip stacker

Devices for raising or lowering and depositing the at least one raised package on the trailing positioned or for lifting the at least one lowered package underneath the trailing positioned package and for demanding the partial stack in this form for palletizing

Such a palletizing process, which can be referred to as a complementary palletizing process, has the advantage that in principle all known types of packaging can be processed with it. The greatest advantages are easy to calibrate with the easy info post that is automatically ensured that in each case when reaching the number of copies, the emei variety or smd assign a standard packet, the formation of a new packet starts This ensures that virtually m High _j edes Standaidpakets a flat covering joint is formed on the pallet , m, if necessary, additional stabilization of the stack can also be inserted in the intermediate sheet. This flat covering joint formation also allows the layers to be alternately mirrored, that is to say to be arranged offset by 180 giad

The process leads to very high volume utilization, since top packages are always immediately completed to standard package heights and the full stack height can be used to the full

In a special form of the process, as many copies are deducted from the number of standard packages during the package formation as corresponds to the staike dei strapping. This enables the standard package to be of a very exact height and thus the prerequisites for stable stacks, which is very much the case with strong, thick strapping is advantageous

A further optimization is possible by selecting a small number of more or fewer copies of standard package heights within the scope of the high tolerance of a standard package, if or complementary packages below a minimum height or number of copies can be avoided.

The tip stacker according to the invention is advantageously suitable for packing the packages, which may consist of standard packages and tip packages with the matching complementary packages, into partial stacks in the amount of one or more standard packages and conveying them further in this partial stack height for direct placement on the pallet . It is particularly advantageous if the leading packets are raised and placed on the trailing, aligned packets.

The function of a system is to be described once again, which is equipped with appropriate units, in particular a tip stacker according to the invention, and which works according to the complementary palletizing method. A signal is emitted from an addressing head or reading head in such a system when a group change is due, for example when it is the turn of a new postal code district. In the case of light information mail, the stacker will be the package in which the last copy of the previous group is located , eject, but do not set its payer to ZERO, so that the complementary package or complementary packages are then automatically formed. The tip stacker is connected to the addressing head via the sequence control. If a height measuring device immediately in front of the tip stacker determines a different package height than the one to be expected according to the program, this package is modulated.

The complementary or tip stacker stacks two or more packages, preferably from top to bottom, but possibly also from top to bottom, one above the other, until the specified height is reached. This predetermined height is formed by the height of one or more standard packages. In this way, only standardized partial stacks reach the transfer station, from which they could be stacked directly on the pallet

These and other advantages are clarified by the description of an embodiment shown in the drawing. A side view of a conveyor system 2, in which a top stacker 1 is integrated, is shown. The packages 6, 7, 8 on emen from the conveyor system 2 Transverse conveyor 5 arranged transversely to the conveyor, which serves as a transfer station for palletizing. The packages 6, 7, 8 are individually transported into the area of the top stacker 1 and positioned there so that they can be gripped by the lifting device 4. The detected package is then raised so that the next package can be moved into the area of the top stacker and, as previously described, positioned there in alignment. When the specified partial stack height, which can be specified with the height of one or more standard packages 8, is reached, the partial stack is extended in the direction of the transfer station to the cross conveyor 5. In the exemplary embodiment, a belt 5 arranged transversely to the main conveying direction of the belt 2 is provided, on which the partial stacks are brought into positions from which they can be gripped by a loading robot and stacked on the pallets.

The top stacker 1 must be designed in the height of its stacking space 3 in such a way that the heights of the predeterminable partial stacks can be freely handled therein. The partial stacks are always structured according to a scheme that proves the height of a standard package either by a standard package or by at least one top package and a complementary package. in the

In the exemplary embodiment, the partial stack shown on the left in the conveying direction consists of two standard packages 8, the following one from two times a top package 6 and a complementary package 7, the following one below from a top package 6 and a complementary package 7 and above a standard package 8 and and finally the following one, below, consisting of two top packages 6 and a complementary package 7, and above, a standard package 8. In the top stacker, a top package 6 and a complementary package 7 are shown below, which complement each other to form a standard package 8.

Claims

claims

1. Palletization process for forming stacks with several packages of signatures arranged side by side and one above the other, which are bundled in standard packages (8) and peak packages (6) with a height less than the height of a standard package (8),

characterized in that

the number of signatures per standard package (8) are determined from the lot size of a task and the total height of a standard stack to be specified for optimal volume utilization, that a peak package (6) or more peak packages (6)

Complementary package (7) is formed, the height of which in the stack with the one peak package (6) or the plurality of peak packages (6) has the height of a standard package (8), and that. a plurality of partial stacks arranged next to each other, each consisting of at least one standard package (6) or a top package (6) and a complementary package (7) or several top packages (6) and a complementary package (7), one level the same Form a height or a joint.

2. Palletizing method according to claim 1, characterized in that the packages formed when the number of signatures of a partial stack is reached (6, 7; 8) in a subsequent tip stacker (1) to form a partial stack or a standard package (8) stacked on top of each other and conveyed for palletizing.

3. Palletizing process according to one of the preceding claims, characterized in that as many signatures are deducted from the number of pieces of a standard package (8) as it is when the package is formed

Strapping strength corresponds.

4. tip stacker (1) for bundles into packages (6, 7, 8) and preferably strapped for each package (6, 7, 8) with which the signature When the number of pieces of a stack (6, 7, 8) formed in a partial stack is deposited and positioned,

d a d u r c h g e k e n n z e i c h n e t that

the at least one previously positioned package (6, 7, 8) can be raised or lowered and the at least one subsequent package (6, 7, 8) for the complementary formation of a partial stack in each case under the raised or above the lowered forward package (6, 7, 8 ) is positiomeibar, whereby the tip stacker (1) deviations (4) to

Raising or lowering and for placing the at least one raised package (6, 7, 8) on the trailing positioned package or for lifting the at least one lowered package (6, 7, 8) under the trailing positioned package (6, 7, 8) as well zui 'demands of the partial stack in this form for palletizing

Tip stacker according to claim 4, characterized in that the packs (6, 7, 8) are stackable before the demand for palletizing to a height which corresponds to the height of at least one standard packet (8)