EP3844069A1 - Mesure de la longueur de chaîne - Google Patents

Mesure de la longueur de chaîne

Info

Publication number
EP3844069A1
EP3844069A1 EP19761799.6A EP19761799A EP3844069A1 EP 3844069 A1 EP3844069 A1 EP 3844069A1 EP 19761799 A EP19761799 A EP 19761799A EP 3844069 A1 EP3844069 A1 EP 3844069A1
Authority
EP
European Patent Office
Prior art keywords
chain
elongation
packaging
chains
film web
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP19761799.6A
Other languages
German (de)
English (en)
Inventor
Florian Becker
Frank Runte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Food Solutions Germany GmbH
Original Assignee
GEA Food Solutions Germany GmbH
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 GEA Food Solutions Germany GmbH filed Critical GEA Food Solutions Germany GmbH
Publication of EP3844069A1 publication Critical patent/EP3844069A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/14—Feeding webs from rolls by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/02—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages
    • B65B57/04—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages and operating to control, or to stop, the feed of such material, containers, or packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing

Definitions

  • the present invention relates to a method for producing a packaging, in which a bottom film web is unrolled from a roll and transported along a packaging machine by means of two endless chains, each of which rotates around at least two gearwheels, thereby molding a packaging trough into the bottom film web and filling it with a product to be packaged and then a top film is sealed onto the packaging tray.
  • Packaging in particular plastic packaging, is often produced on so-called thermoformers, in which a film web is intermittently or continuously unrolled from a roll and transported along the packaging machine by means of two endless chains.
  • the packaging machine has a plurality of processing stations, for example a deep-drawing, a filling and a sealing station, in which the lower film is deep-drawn, the resulting packaging tray is filled and then closed with an upper film.
  • the two chains are arranged to the right and left of the lower film and / or upper film and are provided at regular intervals with grippers which grip the lower film and / or upper film in the infeed area of the packaging machine and preferably release them again in the outfeed area of the packaging machine.
  • Such chains can have a considerable length of 20 meters and more and are exposed to considerable loads, in particular due to the indexed feed, so that they lengthen in an uncontrolled manner over time, which leads to rejects.
  • the object is achieved with a method for producing a packaging, in which a lower film web is unrolled from a roll and transported along a packaging machine by means of two endless chains, each of which rotates around at least two toothed wheels, and preferably a packaging trough is molded into the lower film web and the lower film web is also included a product to be packed and then an upper film is sealed onto the lower film web, the elongation of both chains being measured in each case.
  • Another preferred or inventive object of the present invention is a method for producing a packaging, in which a bottom film web is unrolled from a roll and transported along a packaging machine by means of two endless chains, each of which rotates around at least two gearwheels, and preferably one
  • the packaging tray is molded into the lower film web and the lower film web is loaded with a product to be packaged and then an upper film is sealed onto the lower film web, the upper film being guided between two chains, the elongation of which is measured in each case
  • the present inventions relate to a method for producing packaging, in particular plastic packaging, for example for packaging
  • thermoformers in which a film web is intermittently unrolled from a roll and by means of two endless chains along the
  • Packaging machine is transported.
  • the packaging machine has several
  • Processing stations for example a deep-drawing, a filling and a sealing station, in which the bottom film is deep-drawn, the resulting packaging tray or the plane
  • Bottom film is filled and then closed with a top film.
  • the two chains are arranged in the packaging machine to the right and left of the bottom film and are provided with grippers at regular intervals, which grip the bottom film in the inlet area of the packaging machine and preferably in the outlet area of the
  • Each chain revolves around at least two gears, one of which is in the infeed area, the lower film web and one preferably in the
  • Outflow area of the lower film web is provided.
  • the entry area is the area in which the lower film web is gripped by the grippers on the chains.
  • the bottom film web is released again in the discharge area of the packaging machine.
  • At least one of the toothed wheels of a chain is directly or indirectly driven by a motor, in particular an electric motor, preferably a servo motor or another motor in which the angle of rotation of the output shaft is detected.
  • the two gearwheels are preferably connected to one another in the inlet area of the packaging machine and / or in the outlet area with a rigid shaft in order to achieve the best possible synchronism of the two chains.
  • the lower film web is preferably pulled off and then stands still for a predetermined period in which the processing of the film web, the filling of the packaging trays and / or the closing of the packaging trays takes place.
  • a format of n X m packs are processed with a preference / feed, n and m being integers and generally greater than 1.
  • the shape of the packaging and the number of columns determine the length of the feed.
  • the top film which is sealed to the bottom film after filling, can also be gripped and transported with two chains to the right and left of the top film, especially if the top film is deep-drawn.
  • the explanations for the bottom film then apply analogously. According to a preferred embodiment of the present invention, the elongation of the two chains that guide the top film is also measured.
  • the elongation of both chains that transport the respective film web is now measured.
  • the present invention is based on the knowledge that it is not sufficient to determine the elongation of a chain, but that the elongation of both chains of the respective film web must be measured.
  • a countermeasure is preferably initiated.
  • the elongation of the respective chain can be detected, for example, by electromagnetic waves, acoustically or inductively.
  • electromagnetic waves for example, a camera and a microphone
  • Imaging software can be used to capture chain elongation.
  • Another preferred embodiment is the use of a reluctance sensor.
  • the Hall effect is used to control the
  • the elongation can be measured at one or more points along the packaging machine, the location of the respective measurement preferably being the same for both chains.
  • the chain can be lengthened in the entrance area and / or in front of one or more of the workstations and / or in the exit area.
  • the elongation of the two chains is preferably measured at regular or irregular intervals or continuously.
  • the elongation of the newly produced chain and / or the revised chain is particularly preferably measured after it has been mounted on the packaging machine, for example to form a reference.
  • the elongation of the chain is also preferably measured when the film is changed and / or when the setting of the packaging machine is changed.
  • the measured data are preferably stored, particularly preferably together with one or more of the following information:
  • the data are preferably stored individually in a chain, according to a preferred embodiment.
  • the chain preferably has a means by which it can be clearly identified.
  • the chain data are preferably read or entered automatically.
  • the packaging machine or a computer system connected to it preferably has a reading means.
  • the elongation of both chains is compared.
  • the causes for this can be sought and this can preferably be remedied and / or measures can be taken to reduce the difference in the elongation of both chains.
  • the measured values of the elongation of each chain are determined over a period of time and the measured values, preferably separately for each chain, are stored.
  • the lengthening of the chain is preferably measured in predetermined time periods, for example with each preference or once in a specific time interval and / or when the packaging machine is started up after a stop or continuously or when one or more system parameters, for example the chain temperature, deviate.
  • the packaging machine can preferably have a sensor which detects the quality of the packaging to be produced, the packaging trough, the position of the packaged goods in the packaging, the quality of the sealed seam, the position of the top film on the bottom film and / or the position and quality of the cuts, especially the cross sections monitored.
  • This monitoring can be carried out continuously or discontinuously.
  • the sensor detects deviations from the desired quality and / or a change in packaging parameters, it can be checked automatically whether the chain elongation of one or both chains on the side of a film web is the cause.
  • the last measured value per chain and / or the history of the measured values of each chain is analyzed. Based on this Analysis can, for example, determine whether the respective chain or both chains have lengthened according to an expected pattern or unexpectedly.
  • an inspection of the packaging machine and / or the chain and / or the chain elongation sensor is preferably checked. If necessary, the chain is exchanged and / or the fault on the packaging machine is remedied, for example the lubrication can be poor, the chain center can be stiff and / or the chain tension can be too high. A chain length that is too short or different can also indicate a problem.
  • the chain and / or the chain elongation sensor may be cleaned.
  • next maintenance interval and / or the next replacement and / or the next lubrication can be determined on the basis of the measured chain elongation and, if appropriate, a comparison with a comparison value.
  • Proactive chain exchange can also be initiated based on chain elongation. For example, a message is output that the chain must be changed after a certain number of packagings have been manufactured or after a certain number of operating hours.
  • an alarm can be triggered and / or maintenance can be initiated if elongation exceeds a permissible value.
  • the alarm can be addressed to a worker and / or sent to the "cloud".
  • a service company can be informed via the cloud and / or a service order can be placed.
  • the lubrication state of the chains is determined. This can be done using a camera, for example.
  • the respective lubrication state can be considered when analyzing the elongation.
  • the chain elongation can be determined using any sensor known to the person skilled in the art.
  • the sensor is preferably a reluctance sensor.
  • the chain elongation is determined based on the change in reluctance.
  • At least one sensor per chain is preferably provided.
  • the signal from this sensor is preferably transmitted to a computer system which combines and / or analyzes the measured value with other chain data and / or time data, for example using mathematical formulas.
  • the invention is explained below with reference to FIG. 1. These explanations are only examples and do not limit the general idea of the invention.
  • FIG 1 shows the packaging machine according to the invention
  • FIG. 1 shows a packaging machine 1 which has a deep-drawing station 2, a filling station 7 and a sealing station 15.
  • a plastic film web 8 the so-called bottom film web, is pulled off a supply roll and, preferably in cycles, is transported here from right to left along the packaging machine according to the invention. In one cycle, the film web is transported on by one format length.
  • the packaging machine has two endless chains (not shown), which are arranged to the right and left of the film web. Each endless chain has, preferably equidistantly, holding means / clamping means which each interact with an edge of the film web.
  • each chain there is at least one gear wheel, a chain center, around which the respective chain is deflected. At least one of these gears is driven.
  • the gearwheels in the inlet area 19 and / or in the outlet area can be connected to one another, preferably by a rigid shaft.
  • Each means of transport has a multiplicity of holding means / clamping means which grip the bottom film web 8 in the inlet area and transmit the movement of the means of transport to the bottom film web 8. In the discharge area of the packaging machine, the jamming connection between the means of transport and the bottom film web is released again.
  • the packaging trays 6 are molded into the bottom film web 8.
  • the lower tool 4 is arranged on a lifting table 5 which, as symbolized by the double arrow, is vertically adjustable. Before each film feed, the lower tool 4 is lowered and then raised again. In the further course of the packaging machine, the packaging troughs are then filled with the goods 16 in the filling station 7.
  • the subsequent sealing station 15 which also consists of an upper tool 12 and a vertically adjustable lower tool 11, an upper film web is sealed onto the packaging tray.
  • the upper tool and / or the lower tool are lowered or raised before and after each film transport.
  • the upper film web 14 can also be deep-drawn and / or guided in transport means or transported by transport chains, these transport means then only extending from the sealing station and possibly downstream. Otherwise, the explanations apply that have been made for the means of transport of the bottom film web.
  • Find in the sealing station preferably a gas exchange instead, for example to reduce the oxygen content of the atmosphere in the packaging.
  • the finished packaging is also separated, which is done with the cutting tools 17, 18.
  • the cutting tool 18 can also be raised or lowered with a lifting device 9.
  • the person skilled in the art recognizes that, in one cycle, preferably several packaging troughs are deep-drawn, filled and closed.
  • the elongation of each chain is determined separately by a sensor and the elongation is preferably compared with one another. It is furthermore preferred, for example on the basis of the history of the chain and / or on the basis of reference values, to determine whether the elongation of the chain is within expected limits. If this is not the case, the packaging machine and / or the chain is searched for the cause of the unexpected elongation. If the difference in the elongation of the two chains is too great, the cause is also searched for close and / or the difference is minimized, for example by changing a drive and / or tension parameter of one chain independently of the other chain.
  • the measured values and / or the history of the measured values can be used to initiate maintenance, replacement, cleaning and / or lubrication intervals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

La présente invention concerne un procédé pour fabriquer un emballage, une bande de film inférieure (8) étant déroulée d'un rouleau et transportée au moyen de deux chaînes sans fin, qui circulent respectivement autour d'au moins deux roues dentées, le long d'une machine d'emballage et une barquette d'emballage (6) étant formée à l'intérieur de la bande de film inférieure (8) et remplie d'un produit à emballer et ensuite un film supérieur étant scellé sur la barquette d'emballage (6).
EP19761799.6A 2018-08-31 2019-08-27 Mesure de la longueur de chaîne Pending EP3844069A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018214845 2018-08-31
PCT/EP2019/072770 WO2020043692A1 (fr) 2018-08-31 2019-08-27 Mesure de la longueur de chaîne

Publications (1)

Publication Number Publication Date
EP3844069A1 true EP3844069A1 (fr) 2021-07-07

Family

ID=67809451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19761799.6A Pending EP3844069A1 (fr) 2018-08-31 2019-08-27 Mesure de la longueur de chaîne

Country Status (2)

Country Link
EP (1) EP3844069A1 (fr)
WO (1) WO2020043692A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901209A (en) * 1956-01-30 1959-08-25 Armour Res Found Container filling machine
DE10152891B4 (de) * 2001-10-26 2005-01-05 Adolf Illig Maschinenbau Gmbh & Co.Kg Verfahren zum lagegenauen Ausstanzen von Behältern aus einer thermoplastischen Kunststofffolie und Thermoformmaschine zur Durchführung des Verfahrens
DE10326727B3 (de) * 2003-06-13 2004-08-05 Multivac Sepp Haggenmüller Gmbh & Co. Kg Verpackungsmaschine
DE102005044537C5 (de) * 2005-09-17 2008-07-17 Illig Maschinenbau Gmbh & Co. Kg Thermoformmaschine und Verfahren zum lagegenauen Transportieren einer Folienbahn in dieser Thermoformmaschine
DE102006006185A1 (de) * 2006-02-09 2007-08-16 Cfs Germany Gmbh Verpackungsmaschine mit einer Kettenlängenkompensation
DE102006006523A1 (de) * 2006-02-10 2007-08-16 Cfs Germany Gmbh Verpackungsmaschine mit zwei hintereinander angeordneten Transportketten
DE102008046902A1 (de) * 2008-09-11 2010-04-01 Multivac Sepp Haggenmüller Gmbh & Co. Kg Verpackungsmaschine mit dynamischer Kettenspannung
DE102010009536A1 (de) * 2010-02-26 2011-09-01 Cfs Germany Gmbh Verfahren zum Wechsel des Ober- und Unterwerkzeugs einer Verpackungsmaschine

Also Published As

Publication number Publication date
WO2020043692A1 (fr) 2020-03-05

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