BE1023861B1 - Device for supplying racks and method applied thereby - Google Patents

Device for supplying racks and method applied thereby Download PDF

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Publication number
BE1023861B1
BE1023861B1 BE2016/5119A BE201605119A BE1023861B1 BE 1023861 B1 BE1023861 B1 BE 1023861B1 BE 2016/5119 A BE2016/5119 A BE 2016/5119A BE 201605119 A BE201605119 A BE 201605119A BE 1023861 B1 BE1023861 B1 BE 1023861B1
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BE
Belgium
Prior art keywords
supply
boxes
rack
distance
bins
Prior art date
Application number
BE2016/5119A
Other languages
Dutch (nl)
Other versions
BE1023861A1 (en
Inventor
Koen Ceyssens
Stijn Henri E MOONS
Dirk Carlos HACHE
Original Assignee
FACIL CORPORATE, besloten vennootschap met beperkte aansprakelijkheid
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FACIL CORPORATE, besloten vennootschap met beperkte aansprakelijkheid filed Critical FACIL CORPORATE, besloten vennootschap met beperkte aansprakelijkheid
Priority to BE2016/5119A priority Critical patent/BE1023861B1/en
Publication of BE1023861A1 publication Critical patent/BE1023861A1/en
Application granted granted Critical
Publication of BE1023861B1 publication Critical patent/BE1023861B1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02Storage devices
    • B65G1/04Storage devices mechanical
    • B65G1/06Storage devices mechanical with means for presenting articles for removal at predetermined position or level
    • B65G1/08Storage devices mechanical with means for presenting articles for removal at predetermined position or level the articles being fed by gravity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02Storage devices
    • B65G1/04Storage devices mechanical
    • B65G1/137Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed
    • B65G1/1371Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed with data records

Abstract

Device for supplying racks (2) with supply tracks (5) that slope from a supply side (4) along which bins (3) filled with articles are replenished to a discharge side (6) along which the articles can be taken from the bins (3) and empty bins (3) can be removed, wherein the length (A) of the feed tracks (5) is such that its multiple identical bins (3) with length (B) is such that they have several identical bins (3) with length ( B) may contain gravity displacing a stop (8) at the end of the feed track (5) at a known distance (A) from the feed side (4), characterized in that it comprises measuring means (11) for determine the distance (C) from the last replenished container (3 '') on a supply track (5) to the supply side (4), and means for starting from this distance (C) and from the length (B) of the bins (3) and the distance (A) from the aforementioned stop (8) of the bins (3) and the distance (A) from the aforementioned stop (8), to deduce the number of bins on the supply track (5), which number is passed on to a computer (19) which can control the supply of filled bins (3).

Description

Device for supplying racks and method applied thereby.

Device for supplying racks with articles that are supplied in trays or boxes and are stored in the racks.

More specifically, the invention is intended for a device for supplying a production line of a factory, a warehouse or the like, wherein parts, tools or the like are supplied by external suppliers in bins or boxes of known dimensions that are delivered on pallets or the like at a central location from which the bins or boxes are distributed to the racks to supplement the racks according to consumption.

Typically, so-called "flow racks" or walk-through racks are used in production line environments with descending supply paths that slope from a supply side of the racks along which the trays or boxes filled with articles are replenished to a discharge side along which the parts can be taken out of the boxes or boxes, for example for the benefit of the production line, and empty bins or boxes can be removed.

The trays or boxes move downwards by gravity to a stop for the front tray or box on the discharge side of the rack.

The supply is controlled with a so-called well-known "kanban" system by a worker in the workplace at the appropriate time a so-called "kanban" signal is activated by means of a "kanban" button, "kanban" switch, "kanban card" by way of a order a new supply of parts.

A disadvantage is that the Kanban system is relatively cumbersome and requires the intervention of the workers on the work floor, as a result of which errors can occur that can confuse the system.

Smart rack systems with racks with supply paths can also be known which can subsequently hold several identical trays or boxes one after the other, with each supply path containing a mechanical switch that is pressed when a box or box rests on it and which is interrupted as the number of boxes or boxes on the relevant supply path below a minimum, so as to generate a signal which is transmitted to a central computer or server to indicate that the supply level for the relevant supply path has been reached, which can then take the necessary actions for supplying.

For each rack location of such racks, the number of full trays or boxes still present is monitored by the central server, which can then take action to send new filled trays or boxes on site to supplement the supply paths where necessary.

With these known smart rack systems, a switch is provided for each supply path which is connected to a battery and a transmitter per switch, which implies a relatively large cost and the dependence on batteries.

A disadvantage is that such a system requires a large number of mechanical switches and wiring that makes the electrical part of the system on the racks complex and expensive and, moreover, has an increased risk that a switch or the wiring may be damaged and become defective, causing the information transmitted to the server can be faulty and can confuse the system.

Another disadvantage is that the position of the switches in the supply path is a function of the minimum number of bins or boxes that must be present on each supply path, so that when the required minimum number of bins or boxes is changed, the mechanical switch must be physically moved , as a result of which the system allows little flexibility in the choice of the minimum number of bins or boxes per delivery lane.

The present invention has for its object to provide a solution to the aforementioned and other disadvantages.

To this end, the invention relates to a device for supplying so-called flow racks, wherein this device comprises measuring means for determining the distance from the last replenished bin on a supply track to the supply side of the rack, and means for starting from this distance and from the known length of to deduce, from the known trays and from the known distance from the abovementioned stop to the supply side of the racks, the number of trays or boxes still present on a respective supply track, which number is passed on to a central server or computer which, in function of this control the supply of filled bins or boxes.

An advantage of such a device according to the invention is that less hardware is required, so that the chance of defects also becomes smaller and fewer checks have to be made.

The software to determine the number of bins or boxes present is also very simple.

Moreover, this system can also be used flexibly since when using bins or boxes with a different length the system can be reprogrammed in a very simple way.

In addition, no great measurement accuracy is required for determining the aforementioned distance from the last replenished bin on a feed path to the supply side of the rack, since the tolerance to the distance may be trouble 10% of the length of the bins or boxes. This makes it possible to use cheap measuring probes.

The measuring means for determining the distance of the last replenished bin or box are preferably formed by measuring probes arranged on the supply side of each supply path and by a microprocessor to calculate and transmit the aforementioned distance from the signal from each measuring probe to the central server.

These measuring probes preferably comprise an ultrasonic transmitter-receiver which transmits an ultrasonic signal and receives back the signal reflected on the back of the last-filled bin or box, the microprocessor from the measured time difference between transmitting the signal and receiving the signal. reflected signal calculates the aforementioned distance from the last replenished bin or box to the supply side of the rack.

Such measuring probes are very suitable for the intended application and are easily available as standard.

The racks are usually provided with different adjacent feed paths and this at different levels or heights.

The measuring probes at the same level of a rack are preferably connected to a common microprocessor and power supply, the microprocessor being connected to the central server either directly or via one or more intermediate microprocessors or signal amplifiers so that fewer batteries and microprocessors are needed.

The microprocessors are preferably wirelessly connected to the central server so that less cabling is required.

The measuring probes are preferably arranged on the same level of a rack together with the common microprocessor and battery on a common supporting lath with the measuring probes at a mutual distance corresponding to the mutual distance between the supply paths at the relevant level.

Thus, such a supporting lath with the probes, battery and microprocessor present thereon can be easily exchanged and easily reprogrammed per level when changing the type of bins or boxes.

With the insight to better demonstrate the characteristics of the invention, a preferred embodiment of a device according to the invention and a method for supplying racks, with reference to the accompanying drawings, is described below as an example without any limiting character. , wherein: figure 1 schematically and in perspective represents a device according to the invention for supplying racks of a production line; figure 2 represents an elongation as indicated by F2 in figure 1; figure 3 represents on a larger scale the part which is indicated by the frame F3 in figure 2; figure 4 represents a front view according to arrow F3 in figure 2; figure 5 represents a cross-section according to line V-V in figure 4.

Figure 1 shows, by way of example, a device 1 according to the invention for supplying a production line, wherein smart racks 2 are arranged alongside the production line alongside each other.

The supply takes place by means of trays or boxes 3 which are supplied from a central warehouse filled with parts, tools, consumables or the like to be supplied via the supply side 4, in this case the rear side, of the racks 2.

The racks 2 are provided with descending supply tracks 5 that slope from the aforementioned supply side 4 to the front or discharge side 6 of the racks 2 along which the parts on the shop floor can be taken out of the bins or boxes 3 and empty bins or boxes 3 can be deleted.

In the example shown, the feed tracks 5 are formed by roller tracks with two rows of rollers 7 on which the trays or boxes 3 roll downwards by gravity in the direction of the discharge side 6 up to a stop 8 at the end of the feed path 5 or up to a previously fitted container or box 3.

In this case two grooves 9 are provided in the bottom of the trays or boxes 3, which grooves fit over the rollers 7 and which must ensure that the trays or boxes 3 are guided in the longitudinal direction of the feed tracks 5.

It goes without saying that other types of supply paths are not excluded, with, for example, the trays or boxes 3 sliding down instead of rolling.

The length A of the feed tracks 5 is such that they can contain several identical trays or boxes 3 with a known length B behind and against each other.

When a front bin or box 3 'is empty, it is taken from the racks 2, whereby a subsequent bin or box 3 automatically rolls downwards until said stop 8 presents a new stock of parts or the like on the discharge side 6.

As a result, there is also room at the rear for a next bin or box 3 "which can be supplemented along the supply side 4.

The racks 2 are provided with measuring means 11 on the supply side 4 in order to be able to determine the distance C from the last filled container or box 3 "on a supply track 5.

In the example shown, these means are formed by measuring probes 12 which are attached to a support slat 13 at the beginning of each feed path 5 and are connected via a cable 14 to a joint microprocessor 15 and power supply 16, preferably in the form of a battery or of such.

In the example, the measuring probes 12 are designed as ultrasonic transmitter receivers which emit an ultrasonic signal 17 and retrieve it on the backside 18 of the last replenished bin or box 3 ", whereby the microprocessor 15 can determine the distance C or an estimate thereof deriving from the time difference between sending and receiving the ultrasonic signal 17.

Starting from this distance C and from the known length A of the feed tracks 5, the microprocessor 15 can determine the length D of the row of contiguous trays or boxes 3 present on a relevant feed track 5 as a difference between both lengths A and C and can additionally , based on the known length B of the bins or boxes 3, the number of bins or boxes 3 still present can be derived from it.

It is clear that the distance measurement C does not have to be particularly accurate in order to be able to accurately determine the number of trays or boxes 3 still present.

Each measuring probe 12 receives a rack location that is a function of the relevant rack and of the location of the measuring probe 12 in the rack. Such a location may, for example, be a location code in the form of a number 2532 for a measuring probe 12 in rack number 25 on level 3 of the ground in this rack and counting in row 2 from the left.

The measuring probes 12 are for example sequentially and periodically activated for the determination of the distances C for each supply path 5.

These distances C are periodically transmitted, together with the aforementioned location codes for all connected measuring probes 12, to a central computer or server 19 by each microprocessor 15, for example via wireless connections 20 such as WIFI, Bluetooth, radio signals or the like.

The connection 20 with the central computer or server 19 can be direct or via other intermediate microprocessors 15 or signal amplifiers.

When an empty bin or box 3 is taken out of the rack 2, the next filled bins automatically advance one place forward, so that with a subsequent measurement the distance C becomes larger and the number of bins or boxes 3 still present is reduced by one unit.

In this way the computer or server 19 is continuously or with intervening small time intervals kept informed of the number of bins or boxes 3 still present on a certain supply track 5, so that the computer or server 19 can take this into account in order to achieve the most optimal determine and manage replenishment strategy for the supply of all racks 2 along the production line to ensure that shortages of required parts or the like can never occur on the production line.

It is obvious that the determination of the distances C from the measurement signals of the measurement probes 12 can also be performed by the central computer or server 19.

Preferably identical trays or boxes 3 are used in one rack 2, although this is not strictly necessary, at least insofar as identical trays or boxes 3 are used per supply track 5 or at least trays or boxes 3 of the same length B.

When switching to trays or boxes 3 with a larger or smaller length B, it is sufficient to reprogram this length in a relevant microprocessor 15 or in the computer or server 19.

The support slats 13 may be provided with a standardized mounting to enable them to be mounted on the supply side 4 of the racks 2 in such a way that the measuring probes are automatically aligned with respect to the supply tracks at the relevant level. Alternatively, the measuring probes 12 can also be slidably mounted on the support slats 13 in order to be able to align them on the feed tracks 5.

Thus, it becomes simple to change or replace or reprogram a support slat 13 with measuring probes 12 and microprocessor 15 when switching to other types of boxes at the relevant level of the support slat 13.

It goes without saying that the means 11 for determining the distance C from the last replenished container 3 "on a supply track can also be realized in other ways than with ultrasonic measuring probes 12, for example by triangulation, time of flight, interferometers, sonar and the like Lake.

In the case of ultrasonic measuring probes 12, partitions or screens 21 are preferably arranged between the supply paths 12 to prevent the measuring probes 12 from receiving signals from ultrasonic signals 17 which would be reflected back by trays or boxes 3 on adjacent supply paths 5 and thus would give an incorrect indication of the distance C and therefore also an incorrect determination of the number of bins or boxes 3 present on a relevant supply track 5.

The present invention is by no means limited to the embodiment described as an example and shown in the figures, but a device according to the invention can be realized in all shapes and dimensions without departing from the scope of the invention.

Claims (16)

  1. Conclusions.
    1.- Device for supplying racks (2) with articles that are supplied in trays or boxes (3) and are stored in the racks (2), the device (1) comprising at least one rack (3) with descending feed paths (5) which slope from a supply side (4) of the racks along which the trays or boxes filled with articles (3) are replenished to a discharge side (6) along which the articles can be taken out of the boxes or boxes (3) and empty boxes or boxes (3) can be removed, the length (A) of the feed tracks (5) being such that they can contain several identical boxes or boxes (3) with a known length (B) one behind the other which are moved by gravity towards move downwards against a stop (8) for the front bin or box (3 '), which stop (8) is at a known distance (A) from the supply side (4) of the rack (2), characterized by: that it comprises measuring means (11) for measuring the distance (C) of the last filled container (3 ") supply path (5) to the supply side (4) of the rack (2), and means for starting from this distance (C) and from the known length (B) of the bins or boxes (3) and from the known distance (A) from the aforementioned stop (8) to the supply side (4} of the racks (2), to deduce the number of trays or boxes (3) that are still present on a respective supply track (5), which number is transmitted to a central server or computer (19) which can control the supply of filled bins or boxes (3) as a function of this number.
  2. Device - according to claim 1, characterized in that the measuring means (11) for determining the distance (C) of the last replenished bin or box (3 ") are formed by measuring probes (12) which on the supply side (4) each supply path (5) are arranged and by a microprocessor (15) to calculate the aforementioned distance (C) from the signal from each measuring probe (12) and transmit it to the central computer or server (19).
  3. Device according to claim 2, characterized in that the measuring probes (12) on the supply side (4) of each supply path (5) are formed by an ultrasonic transmitter receiver which transmits an ultrasonic signal and transmits it on the rear (18) of the last replenished bin or box (3 ") receives reflected signal back, the microprocessor (15) or the central computer or server (19) receiving the aforementioned distance from the measured time difference between sending the signal and receiving the reflected signal (C) calculates from the last replenished bin or box (3 ") to the supply side (4) of the rack (2).
  4. Device according to one of the preceding claims, characterized in that the rack (2) is provided with supply paths (5) at different levels and that different supply paths (5) are provided next to each other for each level.
  5. Device according to claim 4, characterized in that the measuring probes at the same level of a rack (2) are connected to a common microprocessor (15) and power supply (16) and the microprocessor (15) is connected to the central computer or server {19}, either directly or via one or more intermediate microprocessors (15) or signal amplifiers.
  6. Device according to claim 5, characterized in that the microprocessors (15) are wirelessly connected to the central computer or server (19).
  7. Device according to claim 6, characterized in that the central computer or server (19) knows the rack location of each measuring probe (12) and of the corresponding supply path (5).
  8. Device according to one of the claims 5 to 7, characterized in that the measuring probes (12) are arranged on a common support slat (2) at the same level of a rack (2) together with the common microprocessor (15) and power supply (16) 13) with the measuring probes (12) at a mutual distance corresponding to the mutual distance between the supply paths (5) at the relevant level.
  9. Device according to claim 8, characterized in that the measuring probes (12) are slidably mounted on the supporting slat (13) in order to be able to align them with respect to the feed tracks (5) at a relevant level where the supporting slat (13) is arranged .
  10. Device according to claim 8 or 9, characterized in that the measuring probes (12) are mounted at fixed positions on the supporting slat (13) and that the supporting slat (13) is provided with a mounting around the supporting slat (13) on the supply side (4) to be able to mount the rack (2) in such a way that the measuring probes (12) are automatically aligned with respect to the feed tracks (5) at the relevant level.
  11. Device according to one of the preceding claims, characterized in that the aforementioned distances (C) are determined periodically and / or sequentially and transmitted to the central computer or server together with the rack locations of the measuring probes (12).
  12. Device according to one of the preceding claims, characterized in that identical trays or boxes (3) are used per level of the rack (2).
  13. Device according to one of the preceding claims, characterized in that identical trays or boxes (3) are used per rack (2).
  14. Device according to one of the preceding claims, characterized in that the device (1) is intended for supplying a production line.
  15. Device according to one of the preceding claims, characterized in that partitions are provided between the feed tracks (5).
  16. Method for determining the number of bins or boxes of a certain length on a supply track (5) of a rack (2) in a device (1) according to one of the preceding claims, characterized in that the distance (C) is determined from the rear side (18) of a container or box (3 ") last replenished on the supply track (5) relative to the supply side (4) and that based on this determined distance (C) and the known length (B) ) of the trays or boxes (3) and of the known length (A) of the feed track (5), the number of trays or boxes (3) is derived by the difference between the length (A) of the feed track (5) and divide the distance (C) by the length (B) of the bins or boxes (3).
BE2016/5119A 2016-02-19 2016-02-19 Device for supplying racks and method applied thereby BE1023861B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE2016/5119A BE1023861B1 (en) 2016-02-19 2016-02-19 Device for supplying racks and method applied thereby

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Application Number Priority Date Filing Date Title
BE2016/5119A BE1023861B1 (en) 2016-02-19 2016-02-19 Device for supplying racks and method applied thereby

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BE1023861B1 true BE1023861B1 (en) 2017-08-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1025880B1 (en) * 2018-01-08 2019-08-06 FACIL CORPORATE, besloten vennootschap met beperkte aansprakelijkheid Sensor for determining a distance, device for supplying racks provided with such a sensor and method applied thereby
EP3657123A1 (en) * 2018-11-23 2020-05-27 Sick Ag Live storage rack and control system for a live storage rack

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT403156B (en) * 1996-02-29 1997-11-25 Knapp Holding Gmbh Rack system
WO2007048155A1 (en) * 2005-10-28 2007-05-03 TGW Transportgeräte GmbH Automated article-handling store
US20080201013A1 (en) * 2005-08-03 2008-08-21 Gerhard Schaefer Device for Contactless Detection of Filling Levels
US20110142581A1 (en) * 2008-08-14 2011-06-16 Karl Freudelsperger Process and device for manually commissioning individually packaged products with a flow shelf

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT403156B (en) * 1996-02-29 1997-11-25 Knapp Holding Gmbh Rack system
US20080201013A1 (en) * 2005-08-03 2008-08-21 Gerhard Schaefer Device for Contactless Detection of Filling Levels
WO2007048155A1 (en) * 2005-10-28 2007-05-03 TGW Transportgeräte GmbH Automated article-handling store
US20110142581A1 (en) * 2008-08-14 2011-06-16 Karl Freudelsperger Process and device for manually commissioning individually packaged products with a flow shelf

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1025880B1 (en) * 2018-01-08 2019-08-06 FACIL CORPORATE, besloten vennootschap met beperkte aansprakelijkheid Sensor for determining a distance, device for supplying racks provided with such a sensor and method applied thereby
EP3657123A1 (en) * 2018-11-23 2020-05-27 Sick Ag Live storage rack and control system for a live storage rack

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Effective date: 20170823