NO803201L

NO803201L - APPARATUS FOR PACKAGING GOODS, SPECIFICALLY A COMPRESSED STABLE INSULATION MATS, IN A BAG OR BAG

Info

Publication number: NO803201L
Application number: NO803201A
Authority: NO
Inventors: Tage Lund Johansen
Original assignee: Joergensen Elektro Aps Brdr
Priority date: 1979-10-29
Filing date: 1980-10-27
Publication date: 1981-04-30
Also published as: EP0028119A1

Abstract

I at apparat for emballering av særlig en sammenpresset stabel mineralullmatter (23) i en pose eller sekk (9) er det med henblikk på reduksjon av behovet for manuell arbeids-kraft anordnet en helautomatisk mekanisme for åpning av de flatlagte poser og innføring av disse på et pakkenebb (19), gjennom hvilket varen kan skyves til bunns i posen. Denne mekanisme har et par holdere (6, 7) med gripere (13) for midlertidig ftg av den flatlagte pose (9) og ut-spiling av dennes åpne ende ved økning av avstanden mellom holderne, samt for innskyvning av posen på pakkenebbet (19). Samtidig med at denne pose fylles kan en neste pose mottas av holderne, for å være klar til fylling så snart den første pose er fjernet fra pakkenebbet.In that apparatus for packaging in particular a compressed stack of mineral wool mats (23) in a bag or sack (9), in order to reduce the need for manual labor, a fully automatic mechanism is provided for opening the flattened bags and inserting them onto a package beak (19), through which the item can be pushed to the bottom of the bag. This mechanism has a pair of holders (6, 7) with grippers (13) for temporarily holding the flattened bag (9) and expanding its open end by increasing the distance between the holders, as well as for pushing the bag onto the package beak (19). ). At the same time as this bag is being filled, a next bag can be received by the holders, to be ready for filling as soon as the first bag is removed from the package beak.

Description

Opfindelsen angår et apparat, der primært er u_dviklet til emballering af en sammentryk stabel isolationsmåtter i en pose eller sæk, men som også The invention relates to a device, which is primarily designed for packaging a compressed stack of insulation mats in a bag or sack, but which also

kan anvendes til varer af anden art.can be used for goods of another kind.

Hvor det drejer sig om isolationsmåtter i form af færdigt tilskårne, rektangulære skiver eller plader af mineraluld med en størrelse på eksempelvis ca. Where it concerns insulation mats in the form of pre-cut, rectangular discs or sheets of mineral wool with a size of, for example, approx.

0,6 x 1,2 m og en tykkelse på mellem eksempelvis 50 og 125 mm, foregår emballeringen sædvanligvis ved, 0.6 x 1.2 m and a thickness of between, for example, 50 and 125 mm, the packaging usually takes place by,

at et passende antal sådanne plader samles i en stabel med en højde på eksempelvis 0,7-1 m og under en vis sammentrykning i højderetningen ledes frem mellem en overplade og en underplade. Før passagen ind mellem disse plader møder stabelen en foliebane, der er sammensat af en overfolie og en underfolie, that a suitable number of such plates are collected in a stack with a height of, for example, 0.7-1 m and, under some compression in the height direction, are led forward between an upper plate and a lower plate. Before the passage between these plates, the stack meets a foil path, which is composed of an upper foil and a lower foil,

som aftrækkes fra hver sin forrådsrulle, og er sammen-svejst med hinanden i en vandret søm, der ligger tilnærmelsesvis ud for midten af pladernes mellemrum. Denne sammensatte foliebane trækkes af stabelen med ind mellem pladerne, hvorved folien strammes omkring stabelen, bag hvilken over- og underfolien sammensvejses i en ret bred søm, der deles langs sin midte. Den ene del af denne søm danner lukke for emballagen omkring stabelen, medens den anden del af sømmen forbinder enderne af de næste længder over- og underfolie, som skal benyttes til emballering af den efterfølgende stabel. Den emballerede stabel kan derpå passere en krympetunnel, der krym-per emballeringsfolien så stærkt, at stabelens højde kan være reduceret med op mod 50% i den færdigt emballerede tilstand. Dette medfører selvsagt, at folien vil blive udsat for kraftige trækpåvirkninger, som i og for sig nemt skulle kunne tåles at selv en tynd folie, men som alligevel erfaringsmæssigt med-fører sprængning i mange tilfælde, fordi folien er blevet svækket ved svejsesømmen. En sådan sprængning which are pulled from each supply roll, and are welded together in a horizontal seam, which lies approximately outside the center of the space between the plates. This composite foil web is pulled from the stack with in between the plates, whereby the foil is tightened around the stack, behind which the upper and lower foil are welded together in a rather wide seam, which is divided along its middle. One part of this seam forms a closure for the packaging around the stack, while the other part of the seam connects the ends of the next lengths of top and bottom foil, which are to be used for packaging the following stack. The packaged stack can then pass through a shrink tunnel, where the packaging foil shrinks so strongly that the stack's height can be reduced by up to 50% in the fully packaged state. This of course means that the foil will be exposed to strong tensile forces, which in and of itself should easily be tolerated by even a thin foil, but which, according to experience, leads to bursting in many cases, because the foil has been weakened at the weld seam. Such a blast

kan indtræffe dels straks efter emballeringens afslut-ning, dels under transport og lagring og giver i beg-ge tilfælde anledning til et betydeligt og besværligt ekstraarbejde. Ved anvendelse af en sværere folie eller en lettere stabelsammentrykning kan sprængnings-risikoen naturligvis nedsættes, men kun på bekostning af ekstra materialeomkostninger, henholdsvis ekstra transportomkostninger. Et yderligere fordyrende mo-ment ved denne emballeringsmetode hænger sammen med krympningen af den omkring stabelen lagte folie, idet der hertil medgår et betydeligt energiforbrug. can occur partly immediately after the end of the packaging, partly during transport and storage and in both cases gives rise to considerable and difficult extra work. By using a heavier foil or a lighter stack compression, the risk of bursting can of course be reduced, but only at the expense of extra material costs, respectively extra transport costs. A further expensive aspect of this packaging method is related to the shrinking of the foil placed around the stack, as this involves considerable energy consumption.

Til forskel fra denne kendte teknik angår opfindelsen et til emballering af varer, navnlig en sammentrykt stabel isolationsmåtter, i en pose eller sæk, omfattende et paklenæb, gennem hvilket stabelen føres til bunds i posen, efter at dennes åbne ende er forskudt et stykke ind på næbbet omkring dettes fri ende. In contrast to this known technique, the invention relates to the packaging of goods, in particular a compressed stack of insulation mats, in a bag or sack, comprising a packing lip, through which the stack is guided to the bottom of the bag, after its open end has been displaced a short distance into the beak around its free end.

Emballering af mineraluldplader efter dette princip har været anvendt gennem en årrække på den måde, at højden af stabelen først reduceres med op mod 50%, hvorefter stabelen presses frem gennem pakkenæbbet, efter at en på forhånd fremstillet pose eller sæk ad manuel vej er trukket ind på dette næb, så at den kan modtage den sammenpressede stabel, uden at denne atter får lejlighed tfl. at udvide sig nævne-værdigt i højderetningen. Under stabelens fortsatte forskydning frem gennem næbbet trækker den sækken fri af dette, hvorefter den åbne ende af sækken kan 1-ukkes ved svejsning eller tilsnøring. Som denne metode hidtil er blevet praktiseret, kræver den meget mandskab, idet den forudsætter tre arbejdspladser, som hver må besættes med fem mand, når der arbejdes i kontinuerlig drift. Packaging of mineral wool panels according to this principle has been used for a number of years in such a way that the height of the stack is first reduced by up to 50%, after which the stack is pushed forward through the package beak, after a pre-made bag or sack has been pulled in manually on this beak, so that it can receive the compressed stack, without this again being given the opportunity to tfl. to expand significantly in the height direction. During the stack's continued displacement forward through the beak, it pulls the sack free of it, after which the open end of the sack can be 1-weeked by welding or lacing. As this method has been practiced so far, it requires a lot of manpower, as it presupposes three workplaces, each of which must be occupied by five people, when working in continuous operation.

Hovedformålet med den foreliggende opfindelse er at anvise et apparat, der muliggør en meget radikal nedskæring af dette mandskabsbehov, og med henblik her-på er apparatet ifølge opfindelsen ejendommeligt ved, at der foran pakkenæbbets fri ende er anbragt en til modtagelse af fladlagte poser og til åbning af disse samt til deres indføring på pakkenæbbet indrettet mekanisme omfattende to holdere med gribere for hver sin posesidevæg, hvilke holdere dels er bevægelige bort fra hinanden til åbning af posen, dels fra en i forhold til pakkenæbbet sideforskudt posemodtagestilling er bevægelige til en stilling ud for dette næb, i hvilken griberne med de fastholdte posesidevægge er forskydelige parallelt med pakkenæbbet til indføring af den åbnede pose på dette. The main purpose of the present invention is to provide an apparatus which enables a very radical reduction of this manpower requirement, and for this purpose the apparatus according to the invention is peculiar in that in front of the free end of the package beak is placed a device for receiving flattened bags and for opening of these as well as for their introduction onto the package beak, a mechanism arranged comprising two holders with grippers for each bag side wall, which holders are partly movable away from each other to open the bag, and partly from a bag receiving position offset laterally in relation to the parcel beak are movable to a position beyond this beak, in which the grippers with the retained bag side walls are displaceable parallel to the package beak for introducing the opened bag onto it.

Ved brug af dette apparat anvendes der altsåWhen using this device, there is thus used

p"å forhånd færdiggjorte poser eller sække, der, uden at det bliver økonomisk uforsvarligt, kan fremstilles i en sådan kvalitet, at de uden sprængningsrisiko kan tåle det ganske kraftige, indvendige tryk, som den stærkt komprimerede stabel udøver, og der bliver ikke behov for en etterfølgende krympning, selv om en sådan éventuelt kan komme på tale i specielle tilfælde. on pre-finished bags or sacks, which, without being financially unsound, can be produced in such a quality that they can withstand the rather strong internal pressure exerted by the highly compressed stack without the risk of bursting, and there is no need for a subsequent shrinkage, although such may possibly come into question in special cases.

Den tilstræbte mandskabsbesparelse er opnået ved, at såvel åbningen af de fladlagte poser som disses indføring på pakkenæbbet udføres fuldautomatisk og på en sådan måde, at de forskellige operationer ikke kommer i vejen for hinanden. Dette er baggrunden for, at i hvert fald den begyndende åbning af posen foregår i en stilling eller position, der er sideforskudt i forhold til pakkenæbbet, idet modtagelsen The targeted manpower saving has been achieved by the fact that both the opening of the flattened bags and their introduction onto the package beak are carried out fully automatically and in such a way that the various operations do not get in the way of each other. This is the reason why, in any case, the initial opening of the bag takes place in a position or position, which is laterally displaced in relation to the package beak, as the reception

og den indledende åbning af en pose da kan foregå samtidig med, at en forudgående pose fyldes med en stabel isolationsmåtter, som passerer frem gennem pakkenæbbet. Så snart denne pose er bragt fri af pakkenæbbet, kan den næste pose ved hjælp af holder- and the initial opening of a bag can then take place at the same time as a preceding bag is filled with a stack of insulation mats, which pass forward through the package beak. As soon as this bag is freed from the package beak, the next bag can be placed using the holder

ne åbnes maksimalt og forskydes til en stiling ud for pakkenæbbet, samt skydes ind på dette, hvorefter holder- are opened to the maximum and shifted to a position beyond the package beak, as well as pushed onto this, after which

ne straks kan gå tilbage til modtagestillingen for klargøring af den næste pose. ne can immediately go back to the receiving position to prepare the next bag.

Yderligere enkeltheder ved apparatet ifølge opfindelsen er i det følgende nærmere forklaret under henvisning til tegningen, på hvilken Further details of the device according to the invention are explained in more detail in the following with reference to the drawing, on which

fig. 1 ret skematisk viser de væsentlige elementer i en foretrukket udførelsesform for apparatet, og fig. 1 quite schematically shows the essential elements in a preferred embodiment of the apparatus, and

fig. 2 et sidebillede i større målsestoks-forhold af de i apparatet ifølge fig. 1 indgående holdere med tilhørende gribere. fig. 2 a side view in a larger scale ratio of those in the apparatus according to fig. 1 included holders with associated grippers.

I fig. 1 antyder 1 og 2 vandrette elementer hørende til apparatets ikke nærmere viste stativ, og 3 er en i dette indgående, lodret sidestander. I denne stander er der lejret et par reversible kæde-træk 4 og 5 for hver sin af to holdere 6 og 7, In fig. 1 suggests 1 and 2 horizontal elements belonging to the device's stand, not shown in more detail, and 3 is an included, vertical side stand. In this stand, a pair of reversible chain pulls 4 and 5 are stored for each of two holders 6 and 7,

der er vist i den foran omtalte modtagestilling.is shown in the receiving position mentioned above.

8 antyder en vogn eller slæde til at føre en flad-lagt pose 9 frem mellem holderne 6 og 7. Denne pose 9 kan på velkendt måde være aftaget fra et magasin, men kan også, ligeledes på velkendt måde, være fremstillet umiddelbart forinden ud fra en rørfolie, der med passende indbyrdes mellemrum svarende til den ønskede poselængde lukkes ved hjælp af en tværlig-gende svejsesøm 10, der danner bund i den færdige pose. 8 suggests a cart or sled to advance a flat-laid bag 9 between the holders 6 and 7. This bag 9 can be taken from a magazine in a well-known way, but can also, also in a well-known way, be produced immediately beforehand from a tube foil, which is closed with appropriate interspaces corresponding to the desired bag length by means of a transverse welding seam 10, which forms a bottom in the finished bag.

Hver af holderne 6 og 7, se navnlig fig. 2, kan være udformet som en pneumatisk cylinder 11 med en stempelstang 12, som bærer et griberhoved 13, der ved passende styring af drivmidlet til cylindrene 11 kan forskydes frem og tilbage som antydet med pilene 14<*>i fig. 2. På de mod hinanden vendende sider er griberne 13 udstyret med sugekopper 14 og fjederklemmer 15 til midlertidig fastgribning af posen 9. Dette iværksættes ved, at vognen eller slæden 8 fra den i fig. 2 viste stilling forskydes til venstre, indtil posens ende, der er fastholdt til vognen eller slæden 8 ved hjælp af en udløselig klemme 16, er kommet et stykke forbi fjederklemmerne 15. Herefter nærmes griberne 13 til hina'nden, så at sugekopperne 14 får fat i hver sin af de modstående posesidevægge og efter etablering af et passende undertryk fastholder disse. Herefter udløses klemmen 16, og vognen 8 fø-res tilbage fra mellemrummet mellem griberne 13, hvor-på disse atter fjernes noget fra hinanden til begyndende åbning af posen 9. Herefter aktiveres et par vinkelformede svingarme 16, der er lejret drejeligt ved den forreste ende af griberne 13, og som er således afpasset, at deres fri, ombukkede ender ved svingning i de ved pilene angivne retninger lander i fjederklemmerne 15 og herunder danner en udadrettet fold i hver af de to posesidevægge. Efter tilbagesvingning af armene 16 til den i fig. 2 viste stilling vil de pågældender folder forblive i indgreb med fjederklemmerne 15, hvorved fastgribningen af posen 9 intensiveres. Som antydet i fig. 2 kan hver af svingarmene 16 bæres af en aksel 17, Each of the holders 6 and 7, see in particular fig. 2, can be designed as a pneumatic cylinder 11 with a piston rod 12, which carries a gripper head 13, where by suitable control of the propellant of the cylinders 11 can be moved back and forth as indicated by the arrows 14<*> in fig. 2. On the sides facing each other, the grippers 13 are equipped with suction cups 14 and spring clamps 15 for temporarily gripping the bag 9. This is implemented by the cart or sledge 8 from the one in fig. The position shown in 2 is shifted to the left, until the end of the bag, which is secured to the cart or sledge 8 by means of a releasable clamp 16, has reached a distance past the spring clamps 15. After this, the grippers 13 approach each other, so that the suction cups 14 take hold in each of the opposite bag side walls and after establishing a suitable negative pressure, holds these. The clamp 16 is then released, and the carriage 8 is moved back from the space between the grippers 13, whereupon these are again removed somewhat from each other to begin opening the bag 9. A pair of angular-shaped swing arms 16 are then activated, where the bearing is rotatable at the front end of the grippers 13, and which are adjusted in such a way that their free, bent ends when swinging in the directions indicated by the arrows land in the spring clamps 15 and below form an outward-directed fold in each of the two bag side walls. After swinging back the arms 16 to the one in fig. 2 position, the folds in question will remain in engagement with the spring clamps 15, whereby the gripping of the bag 9 is intensified. As indicated in fig. 2, each of the swing arms 16 can be carried by a shaft 17,

der står i friktions- eller tandindgreb med en reci-pirocerbar drivstang 18, som eksempelvis kan aktiveres ved hjælp af en ikke-synlig, pneumatisk cylinder, der er indbygget i den tilhørende griber 13. there is frictional or toothed engagement with a reciprocable drive rod 18, which can for example be activated by means of an invisible, pneumatic cylinder, which is built into the associated gripper 13.

Efter at posen 9 på denne måde er fikseret sikkert i de to holdere 6 og 7 med griberne 13, åbnes posen fuldstændigt ved, at holderen 7 bevæges bort fra holderen 6, hvorefter de to holdere under ét sideforskydes, indtil den åbne pose kommer i stilling ud for et pakkenæb 19, fig. 1, der kan være af velkendt art og derfor ikke er vist i detaljer. After the bag 9 is fixed securely in the two holders 6 and 7 with the grippers 13 in this way, the bag is opened completely by moving the holder 7 away from the holder 6, after which the two holders are moved sideways under one until the open bag comes into position ud for a package beak 19, fig. 1, which may be of a well-known nature and are therefore not shown in detail.

I den på tegningen viste udførelsesform er det forud-sat, at den omtalte sideforskydning foregår i lodret retning, altså at holderne i modtagestillingen ligger i et niveau over niveauet for pakkenæbbet 19. In the embodiment shown in the drawing, it is assumed that the mentioned lateral displacement takes place in a vertical direction, i.e. that the holders in the receiving position are at a level above the level of the package beak 19.

Dette pakkenæb 19 har et ikke vist stativThis parcel beak 19 has a stand not shown

med øvre og nedre, omløbende bånd 20, der løber i de ved pilene angivne retninger, og hvis baner er be-stemt af lede- og venderuller 21 og 22. De fremad-løbende, indre båndparter konvergerer mod hinanden i hvert fald frem til lederullerne 21 og eventuelt helt frem til venderullerne 22 og er herved med-virkende til lodret komprimering af den stabel mineraluldmåtter 23, der skal emballeres. with upper and lower, circumferential belt 20, which runs in the directions indicated by the arrows, and whose paths are determined by guide and turning rollers 21 and 22. The forward-running, inner belt parts converge towards each other at least up to the guide rollers 21 and possibly all the way to the turning rollers 22 and thereby contribute to the vertical compression of the stack of mineral wool mats 23, which are to be packaged.

Efter at holderne 6 og 7 med den åbne poseAfter the holders 6 and 7 with the open bag

9 er bragt i stilling foran pakkenæbet 19 som foran forklaret, aktiveres de pneumatiske cylindre 11, fig. 2, hvorved griberne 13 forskydes fremad parallelt med pakkenæbbet 19 og derved fører den åbne ende af posen 9 ind omkring dette pakkenæb. 9 is brought into position in front of the package lip 19 as previously explained, the pneumatic cylinders 11 are activated, fig. 2, whereby the grippers 13 are displaced forwards parallel to the package beak 19 and thereby lead the open end of the bag 9 in around this package beak.

Ved dettes ydersider er der anbragt roterende børster 24, der drives af tilhørende motorer 25 og løber kontinuerligt i de ved pilene angivne retninger. At its outer sides, rotating brushes 24 are arranged, which are driven by associated motors 25 and run continuously in the directions indicated by the arrows.

I den fremskudte stilling af griberne 13 vil disse roterende børster 24 sammen med de udvendige, tilbageløbende parter af pakkenæbbets bånd 20 fange posesidevæggenes endekanter, der derved trækkes eller fejes ind på næbbet og eventuelt glattes helt ud langs dette som antydet med punkteret streg i fig. 1. Se-nest under denne operation er undertrykket i sugekopperne 14 blevet ophævet, og det af børsterne 24 udøvede træk i posesidevæggene er tilstrækkeligt til at bringe disse fri af fjederklemmerne 15. In the advanced position of the grippers 13, these rotating brushes 24 together with the outer, backward parts of the band 20 of the package beak will catch the end edges of the bag side walls, thereby pulling or sweeping onto the beak and possibly smoothing it all the way along it as indicated by the dotted line in fig. 1. During this operation, the negative pressure in the suction cups 14 has been lifted, and the pull exerted by the brushes 24 on the bag side walls is sufficient to free them from the spring clamps 15.

Når posen 9 på denne måde er blevet afgivet til pakkenæbbet 19, returnerer holderne 6 og 7 When the bag 9 has been delivered to the package beak 19 in this way, the holders 6 and 7 return

til den i fig. 1 viste modtagestilling, og den forreste stabel mineraluldmåtter 23 i posenæbbet 19 forskydes fremad til anlæg mod den udspilede bund af posen 9 og videre frem, så at posen trækkes fri af næbbet. Herunder falder den fyldte pose ned på en båndtransportør 26, og når den fyldte pose er kommet to the one in fig. 1 showed the receiving position, and the front stack of mineral wool mats 23 in the bag beak 19 is shifted forward to abut against the expanded bottom of the bag 9 and further forward, so that the bag is pulled free from the beak. Below this, the filled bag falls onto a belt conveyor 26, and when the filled bag has arrived

helt fri af næbbet 19 og fjernet en poselængde fra dette, kan en næste pose tilføres næbbet på samme måde som foran forklaret. completely free of the beak 19 and removed a length of bag from this, a next bag can be added to the beak in the same way as explained above.

Claims

1. Apparatus for packaging goods, in particular a compressed stack of insulation mats (23), in a bag or sack (9), comprising a package beak (19), through which the stack is guided to the bottom of the bag, after its open end has been moved a short distance onto the beak around its free end, characterized by the fact that in front of the free end of the package beak (19) there is a device for receiving flattened bags (9) and for opening them as well as for inserting them onto The package beak is equipped with a mechanism comprising two holders (6, 7) with grippers (13) for each bag side wall, which holders are partly movable away from each other to open the bag (9), and partly from a side-shifted bag receiving position in relation to the package beak (19)• are movable to a position beyond this beak, in which the grippers with the retained bag side walls are displaceable parallel to the package beak for introducing the opened bag onto it.

2. Apparatus according to claim 1, characterized in that the grippers (13) on their opposite sides have partly suction cups (14) for retaining the opposite bag side walls below the initial bag opening, and partly spring clamps (15) for gripping the bag side walls, until the bag is handed over to the package beak (19) .

3. Apparatus according to claim 2, characterized in that the spring clamps (15) are arranged for gripping an outwardly directed fold of the relevant bag side wall, and that the grippers (13) are equipped with angular swing arms (16), which after the initial bag opening are movable from a rest position inside the bag to form the outward folds in the spring clamps (15) and are then movable back to their rest position outside the bag leaving the folds in the spring clamps.

4. Apparatus according to claim 3, characterized in that in connection with the package beak (19) there are rotating brushes (24) in the advanced position of the grippers (13) together with the outside of the beak to catch the end edges of the bag side walls and to pull their folds free from the spring clamps (15) as well as to sweep the bag (9) onto the beak. Apparatus for packaging goods, particularly a compressed stack of insulating mats, in a bag or sack. SUMMARY In an apparatus for packaging in particular a compressible stack of mineral wool mats (23) in a bag or sack (9), with a view to reducing the need for manual labor, a fully automatic mechanism has been established for opening the flattened bags and introducing them onto a package beak (19), through which the item can be pushed to the bottom of the bag. This mechanism has a pair of holders (6, 7) with grippers (13) for temporarily holding the flattened bag (9) and expanding its open end by increasing the distance between the holders and for sliding the bag onto the package beak (19) ). At the same time as this bag is being filled, a next bag can be received by the holders to be ready for filling, as soon as the first bag is removed from the package beak. (Fig. 1).