Patent Application
20250197134
This application claims priority to and takes the benefit of Italian Patent Application Serial No. 102023000026769 filed on Dec. 15, 2023, the contents of which is hereby incorporated by reference into the present disclosure.
The present invention relates to the field of logistics. In particular, it relates to a package picking unit, which can be integrated in a mobile elevating platform, in particular, although not exclusively, to be used in the handling of packages in shelves inside a warehouse.
Warehouse logistics is concerned with, among other aspects, managing in an efficient and optimised manner the storage and handling activities of goods within an organisation. This discipline involves a series of processes and techniques, aimed at maximising efficient use of space, minimising operational costs and improving overall efficiency. In recent years, with the expansion of entrepreneurial logic based on digital commerce (e-commerce), warehouses have increased in size and capacity, and there has been some increase in goods traffic within warehouses.
For logical efficiency reasons, racking is used, i.e. structures made up of vertical, horizontal and diagonal struts. The struts accommodate shelves, which are normally about 1 metre deep. The racking height varies, but racking is usually found in warehouses with heights ranging from 3 to 15 metres, with various subdivisions in shelves. In some cases, the racking is higher.
Usually, mobile elevating platforms are used to load/unload packages. A mobile elevating platform 1, an example of the prior art, is illustrated in
The base chassis 2 houses a motor and vertical lifting systems, suitable for lifting a lifting platform 3, consisting of an operator station 4, equipped with a fall arrest system 5 and controls 6. It is understood that, as the logistics field is concerned here, the operator is advantageously allowed to work standing, safely, using the fall arrest system 5, which consists of a gate that closes automatically, for example through one or more springs, once the operator has entered. The controls 6 include, in addition to driving systems, control systems for the lifting platform 3.
The lifting platform 3 also includes one or more surfaces for temporary support 7, which are advantageously installed on the frame 8. Advantageously, the one or more surfaces for temporary support 7 are horizontal plates, adjustable in height. Thus, depending on the package to be picked up, provision is made for the operator to work more comfortably.
The vertical movement of the platform 3 involves the joint transit of the operator station 4 and one or more surfaces for temporary support 7.
During loading/unloading of packages from the racking, the operator drives, using the controls 6, the platform 1 as for a normal vehicle near the racking. In particular, during unloading operations, the racking is intuitively approached to bring the operator as close as possible to the packages, preferably parallel to the racking installation direction. Then, depending on the weight of the package and where it is placed on the shelf, the operator rotates his back and brings his hands close to the package to be picked; lastly, the operator transports the package on one or more surfaces for temporary support 7. Alternatively, if the package is further towards the back of the shelf width, or if it weighs more, the operator is forced to rotate his body completely to reach the package in front and bend his back towards the package, leaning into the shelf and exerting himself to pick it up.
The operator is required to unload many packages, in the order of, for example, a hundred a day and performing these manoeuvres means there is an increased risk of injury and, in general, these actions contribute to the development of occupational diseases related to chest rotations and to movements that are not always correct and balanced.
WO 2017/037 442 describes a tube lifting apparatus connected to a vacuum system.
U.S. Pat. No. 11,072,079 describes a pick-up stick for picking up flat objects from the floor, which pick-up stick is equipped with a battery-powered suction device.
CN 220 051 827 describes a pen suction device comprising an outer shell, a vacuum generation assembly, a vacuum pipeline assembly, and a pressure maintaining part. The vacuum pipeline assembly is fitted on the outer shell and communicates with the vacuum generation assembly. The vacuum pipeline assembly exits by the first end of the outer shell and is in communication, remaining detached, with the vacuum maintaining assembly.
JP 2012/033 723 relates to vacuum tweezers for picking up semiconductor wafers.
DE 467 066 relates to a device for lifting highly layered objects with flat and smooth surfaces, using the vacuum action.
There is a clear need for a means to facilitate the work of a logistics operator, in particular to facilitate the work of picking up packages stored on racking that can be reached by elevation.
The problem underlying the invention is therefore to propose a mobile elevating platform with an integrated package picking unit.
This purpose is achieved by means of a mobile elevating platform, comprising a base chassis comprising a motor and a vertical lifting system, said chassis having a lifting platform, an operator station, controls, a frame and one or more surfaces for temporary support; said platform also includes a vacuum pump, connected to a package picking unit comprising a suction cup, equipped with a hole axially aligned with a stiff hose; said suction cup is connected through a joint to said stiff hose, ending with a handle including a button; said handle is connected to a flexible hose, wound in a hose reel; wherein said button activates said vacuum pump, sucking air from the hole of said suction cup.
In other embodiments, the mobile elevating platform has the package picking unit which also includes attachment means, suitable for attaching said unit (100) to said mobile elevating platform.
In other embodiments, the frame, the surfaces for temporary support and the stiff body of the package picking unit are equipped with attachment means, chosen between means of magnetic attachment or flexible elements.
In other embodiments, the joint is spherical and the flexible hose is equipped with a stop.
In other embodiments, the mobile elevating platform has the vacuum pump integrated in said base chassis.
The dependent claims describe preferred features of the invention.
Other features and advantages of the invention will become clearer from the following detailed description of a preferred embodiment, given purely by way of example and in a non-limiting manner, and illustrated in the appended drawings in which:
Advantageously, the stiff hose 103 is extendable by means of a telescopic mechanism.
On the handle 105, there is a button 106, the role of which will be explained later. The handle 105 connects the stiff hose 103 to a flexible hose 107. The flexible hose 107 can be wound in a hose reel 108, equipped with attachment means 109, suitable for attaching said unit 100 to a mobile elevating platform, of the type represented by the platform 1 in
The hose reel 108 contains, in a manner that is known per se, a reel on which the flexible hose 107 is wound. In some embodiments, the hose reel 108 can also comprise known systems to facilitate the winding of the flexible hose 107.
The hose 107 is then connected, by means of a pneumatic connection, to vacuum pumps. It is also understood that the hole 102 is aligned with the stiff hose 103. In embodiments in which the unit is coupled to a vacuum pump, the unit 100 provides for the use of gaskets each time two components of the unit 100 are connected.
Essentially, said suction cup 101 also comprises a hole 102, axially aligned with said stiff hose 103 and said flexible hose 107 is connected to a vacuum pump, the operation of which is controlled by the button 106.
Preferably, the package picking unit 100 is integrated on a mobile elevating platform, of the type illustrated in
Preferably, the unit 100 is installed on the frame, such that an operator can use it easily. In particular, it is installed on the mobile elevating platform using attachment means 109, while the stiff hose 103 is attached, still to the frame, using known means, such as for example catches, for example made of hard plastic, such that it is convenient for the operator to temporarily attach the stiff hose 103 during operations. Alternatively, magnetic temporary attachment means can be provided for on the stiff hose 103 and magnetic attachment means at various points on the mobile elevating platform (e.g. on the frame and on the surfaces for temporary support).
A mobile elevating platform, equipped with a package picking unit 100, makes the work of the operator less stressful and reduces the risks of injury. For example, in a manner similar to the prior art, the operator can drive and move himself close to a racking structure, while remaining parallel to the installation direction. Therefore, still in accordance with the prior art, the operator will lift himself in order to reach the shelf which has the package to be picked. At this point, differently from the prior art, the operator activates the vacuum pump using the controls and takes the handle 105 of the unit 100. Next, by extending his arm, without the need to minimally rotate his chest towards the shelf, the operator will simply rest the suction cup 101 on any surface of said package, activating the vacuum pump by means of the button 106, and initiating suction. The joint 104 enables the operator to work even with less precision, since suction is maintained even if the suction cup 101 is slightly misaligned with the package. In other words, a small degree of non-perpendicularity is advantageously tolerated between the surface of the package and the suction cup 101. Next, the operator can simply transport the package on the surfaces for temporary support, hauling it with the handle 105. The unit 100 provides for easily picking up packages that even weigh more than 5 kg. It is understood that, preferably, a low-vacuum pump is installed, but in other embodiments it is possible to provide for the installation of a medium-vacuum pump, or even high-vacuum, to strengthen the suction capability of the unit 100, so as to handle heavier packages.
If the package turns out to be too heavy, the operator can use his hand that is not gripping the handle 105 to support the picked package by its base.
In some embodiments, provision is made for the button 106 to also execute a return of air, in a manner that is known per se, in order to quickly remove the vacuum and accelerate the detachment of the package from the unit 100.
Other embodiments use pumps generating a low vacuum for picking, such that it is at a sufficient level for the operator to deform the suction cup, for example it is possible to simply keep the package attached and move the handle towards himself or away from himself to remove the vacuum.
In another embodiment of the present invention, the stiff hose of the unit provides for being extendable by means of a telescopic operation. The telescopic operation can be actuated in the present invention through known means.
The picking unit according to the present invention enables goods to be picked from a shelf and deposited on the transport deck of a mobile platform safely and completely ergonomically, avoiding the need for the operator to lean out from the mobile platform and rotate his chest in a harmful way.
It is understood that the invention must not be considered to be limited to the particular arrangement illustrated above, which forms only one example embodiment thereof, but that various variants are possible, all within the capabilities of a technician skilled in the art, without thereby departing from the scope of protection of said invention, which scope is defined in the claims that follow.
For example, it is possible to provide for the use of a suction cup that is not powered by the pump, but which creates a vacuum in the absence of mechanical/electronic means. For example, by using a device for deforming the suction cup.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102023000026769 | Dec 2023 | IT | national |
