FI90334C

FI90334C - Method and apparatus for stacking elongate pieces

Info

Publication number: FI90334C
Application number: FI902265A
Authority: FI
Inventors: Antti Pyyhtiae
Original assignee: Heikinheimo Olli
Priority date: 1990-05-04
Filing date: 1990-05-04
Publication date: 1994-01-25
Also published as: FI902265A0; SE9101215L; SE9101215D0; FI902265A; FI90334B

Description

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MenetelmS ja laite pitkSnomaisten kappaleiden pinoamiseksi TSman keksinnOn kohteena on patenttivaatimuksen l johdannon mukainen menetelma pitkSnomaisten esineiden pinoamiseksi.The invention relates to a method for stacking elongate objects according to the preamble of claim 1.

Keksinndn kohteena on myds menetelmSn soveltamiseen tarkoi-tettu laite.The invention relates to a device for applying this method.

PitkiS kappaleita joudutaan pinoamaan erityisesti sahateol-lisuudessa tuotannon eri vaiheissa tai kuljetusta vårten. SamantyyppisiS pinoamistehtSviS on myfis profiileja, putkia ja muita pitkiS muotokappaleita valmistavassa teollisuudes-sa. Pinottaessa kappaleet syfitetSSn edelliseltS tydvaiheelta kuljettimella poikittain siirtokuljettimelle. Siirtokuljet-timella kappaleista kootaan yksi pinon kerros, joka siirre-tSSn kuljettimen radalta pinoon joko pinon pSSllimmSiseksi tai alimmaiseksi kerrokseksi.Long pieces have to be stacked, especially in the sawmill industry at different stages of production or during transport. A stacking task of the same type is myfis in the industry of profiles, pipes and other long fittings. When stacking the pieces from the previous full step on the conveyor, the conveyor is transverse to the transfer conveyor. With the transfer conveyor, one layer of the stack is assembled from the pieces, which is transferred from the track of the conveyor to the stack as either the most or the lowest layer of the stack.

Siirtokuljettimelle kootut valmiit kerrokset siirretaan pinoon erilaisilla siirtovarsilla. Siirtovarsia on oleenså kaksi rinnakkain, ja valmiit kerrokset nostetaan pinottessa siirtovarsilla radalta ja viedSSn pinoon, minka jalkeen var-ret vedetaan pois pinoon tuodun kerroksen alta. Koska ny-kyisten tuotantolinjojen nopeus erityisesti sahateollisuu-dessa on erittSin suuri, yhdellS siirtovarsiparilla ei pystyta pinoamaan valmiusradalla kerSantyvSS materiaalimSa-raa. Pinoamisen nopeuttamiseksi on kehitetty erilaisia jSr-jestelmia, joissa on ainakin kaksi siirtovarsiparia. NSissa laitteissa siirtyy toinen siirtovarsipari siirtokuljettimelle keråttSvån kerroksen alle, kun toinen varsipari lahtee viemaan tSytta kerrosta pinoon. NSin saadaan pinoamisnopeut-ta lisStyksi.The finished layers assembled on the transfer conveyor are transferred to the stack by different transfer arms. There are essentially two transfer arms in parallel, and the finished layers are lifted by stacking the transfer arms off the track and into the stack, after which the arms are pulled out from under the layer introduced into the stack. Due to the very high speed of the current production lines, especially in the sawmill industry, it was not possible to stack the material accumulation accumulating on the standby track with one pair of transfer arms. To speed up stacking, various jSr systems with at least two pairs of transfer arms have been developed. In NS devices, a second pair of transfer arms moves to the transfer conveyor under the collecting layer when the second pair of arms begins to take the tTytta layer to the stack. The stacking speed of NS is increased.

TSllaisilla jaksottaisesti toimivilla pinoamislaitteilla on kuitenkin useita haittapuolia. Siirtovarsien liikenopeuden on oltava erittain suuri nopeissa pinoamislaitteissa, minka takia varsien kiihtyvyydet liikkeelle lahdettaessa ja hidas- 2 90334 tettaessa tulevat myOs suuriksi. Koska varsiin on hankalaa liittaa sellaisia kiinnityslaitteita, joilla pinottava ker-ros voitaisiin kiinnittaa tukevasti varsiin siirron ajaksi, kerroksessa olevat kappaleet liukuvat herkSsti siirtovarsien paaiia. vinoon kaantynyt tai muita kerroksia leveampi tai kapeampi kerros aiheuttaa hairiOita pinon kokoamisessa, ja paketti, jossa on virheellisia kerroksia, saattaa hajota siirron tai kuljetuksen aikana.However, such intermittent stacking devices have several disadvantages. The speed of movement of the transfer arms must be very high in high-speed stacking devices, as a result of which the acceleration of the arms when starting and decelerating becomes 2 90334 myOs. Since it is difficult to attach to the arms attachment devices with which the stackable layer could be firmly attached to the arms during transfer, the pieces in the layer slide easily over the transfer arms. a layer that is skewed or wider or narrower than other layers will cause disassembly in the stack assembly, and a package with defective layers may break during transfer or transportation.

Liukumista on pyritty vahentamaan erilaisilla siirtovarsissa olevilla kitkapinnoilla. Kitkapinnat on kiinnitetty varsien yhdelle sivulle, ja yksi varsien sivuista on tehty helposti luistavaksi. Siirtokuljettimella olevaa valmista kerrosta nostettaessa varsia kaannetaan pituusakselinsa ymp3ri ennen kuin siirtokuljettimelle koottu kerros nostetaan ylds. Kun varret kaantyvat, niiden hammastettu tai jollain suurikit-kaisella materiaalilla paailystetty pinta tulee kerroksen alapintaa vasten. Pinon yiapuolella varsien pienikitkainen pinta kaantyy kerrosta vasten, jolloin kerros liukuu helposti pois varsien paaita. T3113 ratkaisulla pinottavassa ker-roksessa olevien kappaleiden liukumista on saatu oleellises-ti vahennetyksi, mutta erityisesti suurilla nopeuksilla ja pinottaessa kapeita kerroksia taikka kevyita kappaleita liukumista voi edelleen tapahtua.Efforts have been made to reduce slippage with various friction surfaces on the transfer arms. The friction surfaces are attached to one side of the arms, and one of the sides of the arms is made to easily slip. When lifting the finished layer on the transfer conveyor, the arms are turned around its longitudinal axis before the layer assembled on the transfer conveyor is lifted. As the stems curve, their toothed or high-friction surface is exposed to the lower surface of the layer. On the yia side of the stack, the low-friction surface of the arms bends against the layer, allowing the layer to easily slide off the top of the arms. With the T3113 solution, the slippage of the pieces in the stackable layer has been substantially reduced, but especially at high speeds and when stacking narrow layers or light pieces, slippage can still occur.

Jaksottaisesti toimivien laitteiden toisena haittapuolena on se, etta suurten kiihtyvyyksien takia laiteen rakenteesta on teht3v3 j3ykka, mika johtaa samalla painavaan rakenteeseen. Kun painavaa siirtovarsisovitelmaa kuormineen kiihdytet33n ja jarrutetaan nopeasti, joudutaan kayttamaan kalliita ja tehokkaita toimilaitteita. Pinon leveytta ja kerroksessa olevien kappaleiden v31ej3 on siirtovarsitoimisissa lait-teissa hankalaa muuttaa, koska tailiiin joudutaan vaihtamaan rajoittimia ja muita laitteen mekaanisia osia.Another disadvantage of intermittent devices is that, due to the high accelerations, the structure of the device is made rigid, which at the same time leads to a heavy structure. When accelerating and braking a heavy transfer arm assembly with a load, expensive and efficient actuators have to be used. It is difficult to change the width of the stack and the pieces v31ej3 in the layer in transfer arm devices, because the stops and other mechanical parts of the device have to be replaced.

T3m3n keksinndn tarkoituksena on saada aikaan menetelma ja laite, joiden avulla pitkanomaisia kappaleita voidaan pinota ilman edelia mainitun kaltaisia hairidita jatkuvatoimisesti.The object of the invention is to provide a method and a device by means of which elongate bodies can be stacked continuously without such a disturbance.

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KeksintO perustuu siihen, etta kappaleet siirretaan siirto-kuljettimelta pinoamiskuljettimelle, joka taytyttyaan siirretaan pinon paaile. Pinoamiskuljetinta siirretaan sitten taaksep3in pinon paalla, ja kuljettimella olevat kappaleet pudotetaan yksitellen kuljettimen p33sta pinoon. Siirtokul-jettimen radan pituus muuttuu pinoamiskuljettimen aseman mu-kana ja jakokuljetin syOttaa jatkuvasti kappaleita siirto-kulj ettimelle.The invention is based on the fact that the pieces are transferred from a transfer conveyor to a stacking conveyor, which, when filled, is transferred to the stack. The stacking conveyor is then moved backwards on the stack, and the pieces on the conveyor are dropped one by one from the p33 of the conveyor. The path length of the transfer conveyor changes with the position of the stacking conveyor, and the distribution conveyor continuously feeds pieces to the transfer conveyor.

Tasmailisemmin sanottuna keksinnOn mukaiselle menetelmaile on tunnusomaista se, mika on esitetty patenttivaatimuksen 1 tunnusmerkkiosassa.More specifically, the methods according to the invention are characterized by what is set out in the characterizing part of claim 1.

KeksinnOn mukaiselle laitteelle on puolestaan tunnusomaista se, mita on esitetty patenttivaatimuksen 6 tunnusmerkiosas-sa.The device according to the invention, in turn, is characterized by what is set forth in the characterizing part of claim 6.

KeksinnOn avulla saavutetaan huomattavia etuja.The invention provides considerable advantages.

KeksinnOn mukaisella menetelmaiia paastaan suureen pinoamis-nopeuteen ja tehokkuuteen. Kappaleet asettuvat tarkasti oi-keille paikoilleen pinon kerroksissa, joten kerroksista ja pinosta tulee virheettOmia. Pinon leveytta ja kappaleiden vaiisia etaisyyksia voidaan muunnella halutulla tavalla yk-sinkertaisesti kuljettimien nopeuksia muuttamalla. Nopeuk-sien saatO on helppo automatisoida, ja tarvittaessa voidaan vaikka jokainen pino pinota edellisesta poikkeavalla tavalla. Ohjaus voidaan toteuttaa yksinkertaisesti rajakytkimil-13, ohjelmoitavalla logiikkayksikOlia taikka mikrotietoko-neella ohjelmallisesti, aina halutun automaatioasteen mu-kaan. Tehokkaan ja jatkuvan toimintatavan ansiosta tassa laitteessa ei jouduta k3ytt3maan suuria nopeuksia tai kiihtyvyyksia ja laitteesta voidaan rakentaa kevyempi ja siina voidaan k3ytt33 pienempitehoisia toimilaitteita. Laite mahtuu erittain pieneen tilaan. Pituussunnassa se sopii 13-hes tavallisen siirtokuljettimen tilalle, ja koska kaikki tarvittavat liikkeet tapahtuvat radan suunnassa ja samassa tasossa, tilantarpeen pystysuunnassa maaraa pinonosturin korkeus.The method according to the invention provides high stacking speed and efficiency. The pieces are precisely positioned in the layers of the stack, so the layers and the stack become flawless. The width of the stack and the quiet distances of the pieces can be modified as desired simply by changing the speeds of the conveyors. The speeds are easy to automate, and if necessary, each stack can be stacked differently. The control can be implemented simply by limit switches-13, by a programmable logic unit or by a microcomputer programmatically, always according to the desired degree of automation. Thanks to the efficient and continuous mode of operation, this device does not have to use high speeds or accelerations, and the device can be built lighter and can use lower power actuators. The device fits in a very small space. In the longitudinal direction, it fits in place of the 13-hes standard transfer conveyor, and since all the necessary movements take place in the direction of the track and in the same plane, the height of the stack crane determines the space requirement vertically.

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Keksintoa selostetaan seuraavassa tarkemmin oheisten piirus-tusten avulla.The invention is described in more detail below with the aid of the accompanying drawings.

Kuvio 1 esittaa yhta tamMn keksinndn mukaisen laitteen suo-ritusmuotoa alkuasennossa.Figure 1 shows an embodiment of a device according to the invention in the initial position.

Kuvio 2 esittaa suurennetussa mittakaavassa kuvion 1 leik-kausta A - A.Figure 2 shows on an enlarged scale section A-A of Figure 1.

Kuvio 3 esittaa kuvion 1 laitetta paateasennossa.Figure 3 shows the device of Figure 1 in the end position.

Piirustuksissa esitetty laite on sahatavaran pinoamis- ja paketointilaite.The device shown in the drawings is a sawn stacking and packaging device.

Laite koostuu ketjukuljetintyyppisesta siirtokuljettimesta 1 ja pinoamiskuljettimesta 2, jotka on sijoitettu jakokuljettimen 14 ja pinonosturin 16 valiin. Pinoamiskuljetin 2 on kiinnitetty liikuteltavaan vaunuun 6. Vaunu 6 liikkuu kis-koilla 12 pydrien li varassa ja sita liikutetaan kahden ketjupydran 9 ja 10 kautta kulkevan ketjun ja siirtokuljettimen 1 ketjun avulla. Siirtokuljettimen 2 ketju kulkee numerojarjestyksessa ketjupydrien 3 - 5, 7 ja 8 kautta. Ketjupydra 3 on kdytttipytira, joka pydrittaa moottorin avulla jakokuljettimen 14, siirtokuljettimen 1 ja pinoamiskuljettimen 2 ketjuja. Pydrat 4 ja 5 ovat taittopydria ja pydra 5 voidaan lukita pydrimattdmiksi. Ketjupyfirat 7 ja 8 on akse-loitu kiinteille akseleille, ja ne ovat myfis taittopydria. Jakokuljettimen 14 ketju ja siirtokuljettimen 1 ketju kier-tdvat samalle akselille sijoitettujen kayttdketjupydrien 3 ympari. T3m3 akseli on molempien kuljettimien kMyttdakseli ja sita pydritetaan sahktimoottorilla alennusvaihteen kautta. Siirtokuljettimen 1 ketju kaantyy pinoamiskuljettimen 2 al-kupaan kohdalla liikuteltavaan vaunuun 6 kiinnitetyn ketju-pydr3n 4 kautta radan alle. Ketjupydraita 4 ketju kulkee toisen vaunun 6 runkoon kiinnitetyn ketjupydran 5 kautta kahden kiintedn ketjupydran 7 ja 8 kautta takaisin kayttd-pydraile 3.The device consists of a chain conveyor type transfer conveyor 1 and a stacking conveyor 2, which are placed between the distribution conveyor 14 and the stacking crane 16. The stacking conveyor 2 is attached to the movable carriage 6. The carriage 6 moves on the rails 12 on the pulleys li and is moved by means of a chain passing through two chain pulleys 9 and 10 and a chain of a transfer conveyor 1. The chain of the transfer conveyor 2 passes through the chain wheels 3 to 5, 7 and 8 in numerical order. The chain roller 3 is a drive pulley which, by means of a motor, trains the chains of the distribution conveyor 14, the transfer conveyor 1 and the stacking conveyor 2. Pillars 4 and 5 are folding pears and pillar 5 can be locked as a pyramid mat. The chain pins 7 and 8 are axially mounted on fixed shafts and are myfis folding pylons. The chain of the distribution conveyor 14 and the chain of the transfer conveyor 1 rotate around drive chain wheels 3 arranged on the same axis. The T3m3 shaft is the kDyt shaft of both conveyors and is driven by an electric motor via a reduction gear. The chain of the transfer conveyor 1 turns under the track at the al-cup of the stacking conveyor 2 through a chain pydr3 4 attached to the mobile carriage 6. The chain of chain chains 4 passes through two chain chains 7 and 8 attached to the frame of the second carriage 6 back to the drive chains 3 and 8.

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Siirtokuljetin 2 koostuu vaunuun 6 kiinnitetyista pituus-suunnassa olennaisesti vaakasuorista ja sivusuuntaan kallis-tetuista jaykista kannatinkielista 20 seka naiden reunan ym-pSri kiertyvista ketjuista 21 (kuvio 2), joiden eteenpain kulkevan osan ja palaavan osan kautta kulkeva taso muodostaa vaakatason kanssa teravan kulman. Kannatinkielia 20 ketjui-neen 21 on kaksi rinnakkkain. Ketjut 21 ovat rullaketjuja, joiden nivelkohtiin on kiinnitetty tarttujia 22. Kunkin ket-jun 21 kayttCketjupydraa pydritetaan kulmavaihteella 13, joka saa kayttdvoimansa ketjupyCr3n 4 akselilta.The transfer conveyor 2 consists of rigidly longitudinally and laterally inclined rigid support tongues 20 fixed to the carriage 6 and of rotating chains 21 (Fig. 2) on the edge thereof (Fig. 2), the plane passing through the forward part and the return part forming a horizontal plane with a horizontal plane. The support tongues 20 with the chain 21 are two in parallel. The chains 21 are roller chains with grippers 22 attached to their articulation points. The drive chain roller of each chain train 21 is rotated by a bevel gear 13 which receives its driving force from the shaft of the chain wheel 4.

Laite toimii seuraavasti. Jakokuljetin 14 tuo pinottavia kappaleita, tassa tapauksessa lautoja 15, siirtokuljettimel-le l. Laudat 15 ovat kuljettimella 14 tarttujien maaramin tasaisin vaiein. Jakokuljettimelta 14 laudat 15 siirtyvat siirtokuljettimelle 1. Laudat 15 sijoittuvat siirtokuljetti-melle kolien maaramin vaiein. Siirtokuljettimen 1 paassa laudat 15 siirtyvat pinoamiskuljettimelle 2. Laudat 15 siirtyvat siirtokuljettimelta 1 pinoamiskuljettimelle 2 yksitel-len ja asettuvat m33ratyn v31imatkan p33h3n toisistaan. Kuljettimella laudat 15 siirtyvat eteenpain ketjujen 21 tarttujien 22 tyfintamina. Siirtokuljetin 1 syfittaa lautoja 15 yksi kerrallaan pinoamiskuljettimelle 2 ja se tayttyy vahitellen, jolloin ensimmaiseksi ketjulle 2 tullut lauta 15 tulee kul-jettimen 2 p33h3n ja katkaisee valokennon 23 sateen.The device works as follows. The distribution conveyor 14 brings the stackable pieces, in this case the boards 15, to the transfer conveyor 1. The boards 15 are on the conveyor 14 at the even steps of the gripper. From the distribution conveyor 14, the boards 15 move to the transfer conveyor 1. The boards 15 are located on the transfer conveyor during the steps of the marsh. At the end of the transfer conveyor 1, the boards 15 move to the stacking conveyor 2. The boards 15 move from the transfer conveyor 1 to the stacking conveyor 2 individually and settle at a distance p33h3n from each other. With the conveyor, the boards 15 move forward as the typhs of the grippers 22 of the chains 21. The transfer conveyor 1 siphons the boards 15 one by one onto the stacking conveyor 2 and is gradually filled, whereby the board 15 which first comes to the chain 2 enters the conveyor 2 p33h3n and cuts off the rain of the photocell 23.

Kun valokenno 23 antaa merkin siita, etta pinoamiskuljetin 2 on taynna, lukittuu ketjupyflra 5 akseleineen pyOrimattOmak-si. Siirtokuljettimen 1 ketju ei p33se nyt pyfirimaan t3m3n ketjupydr3n 5 ymp3ri ja pinoamiskuljettimen 2 ketju pys3h-tyy, koska ketjupyOran 4 akselikaan ei pyOri. Koska kayttOpydra 3 kayttaa siirtokuljettimen 1 ketjua jatkuvasti, alkaa vaunu 6 liikkua raiteilla 12 ja pinoamiskuljetin 2 siirtyy pinonosturissa 16 olevan pinon 17 yiapuolelle. Ket-jupydrien 5 ja 7 valinen matka lyhenee ja kayttdpydran 3 ja ketjupydran 4 valinen matka pitenee vastaavasti. Vaikka siirtokuljettimen 1 ketju ei pydrikaan, jakokuljetin 14 voi 6 90334 sydttaa jatkuvasti lis33 lautoja 15 siirtokuljettimelle 1 koska radan 1 pitenemisen takia radalle tulee jatkuvasti lisSa tilaa. Kun vaunu 6 pinoamiskuljettimineen 2 tulee p33-teasentoonsa, kuljettimen 2 paassa oleva lauta 15 katkaisee toisen valokennon 24 sateen, sateen katkettua ketjupyOra 5 vapautuu ja siirtokuljettimen 1 ja pinoamiskuljettimen 2 ketjut alkavat pyflria. Samalla kaynnistyy vaihteen valitykselia ketjupydran 9 akselille liitetty sahkOmoottori, ja ketjupyOra 9 alkaa vetaa vaunua 6 takaisinpain.When the photocell 23 indicates that the stacking conveyor 2 is full, the chain wheel 5 with its shafts is locked to rotate. The chain of the transfer conveyor 1 does not now rotate around the chain drive 5 and the chain of the stacking conveyor 2 stops because the shaft of the chain wheel 4 does not rotate either. Since the drive belt 3 continuously drives the chain of the transfer conveyor 1, the carriage 6 begins to move on the tracks 12 and the stacking conveyor 2 moves beyond the stack 17 in the stack crane 16. The distance between the chain pulleys 5 and 7 is shortened and the distance between the drive pulley 3 and the chain pulley 4 is lengthened, respectively. Although the chain of the transfer conveyor 1 is not pyridic, the distribution conveyor 14 can continuously push the additional boards 33 onto the transfer conveyor 1 because due to the lengthening of the track 1, more space is constantly added to the track. When the carriage 6 with its stacking conveyor 2 enters its p33 position, the board 15 at the end of the conveyor 2 cuts off the rain of the second photocell 24, when the rain breaks the chain wheel 5 is released and the chains of the transfer conveyor 1 and the stacking conveyor 2 start to flow. At the same time, the electric motor connected to the shaft of the chain pulley 9 starts, and the chain pulley 9 starts to pull the carriage 6 back.

Nyt vaunu 6 liikkuu taaksepain ja siirtokuljettimen 1 ja pinoamiskuljettimen 2 ketjut pyfirivat eteenpain. Ketjujen liikkeen alkaessa pinoamiskuljettimen 2 paassa oleva lauta 15 putoaa laitimmaiseksi pinoon 17. Seuraavat laudat 15 asettuvat pinoamiskuljettimen 2 p33sta pudotessaan vuorotel-len halutuin vaiimatkoin edellisen laudan 15 viereen. Pinoamiskuljettimen 2 kannatinkielet 20 on kallistettu vinoon vaakatasosta kuljettimen 2 pituusakselin suhteen. Kunkin kannatinkielen 20 reunojen ympari kiertaa rullaketju 21. Koska kannatinkielet 20 ovat vinossa asennossa, ketjut 21 kulkevat eteenpain siirtyessaan kielten 20 yiareunalla ja palatessaan niiden alareunalla. Kannatinkielten 20 p33ssa ketjuissa 21 olevat tarttujat 22 tyfint3v3t pinoamiskuljetti-mella 2 kulkevan laudan 15 kuljettimen 2 p33n yli. Koska kuljettimen 2 ketjut 21 k33ntyv3t vinosti kannatinkielien 20 p3iden yli, kuljettimella 2 olevat laudat 15 putoavat tarkasti ja hallitusti oikeille paikoilleen pinoon 17, eivatka ulokkeet 22 hairitse pinoamista paluuliikkeen aika-na.Now the carriage 6 moves backwards and the chains of the transfer conveyor 1 and the stacking conveyor 2 rotate forward. As the movement of the chains begins, the board 15 at the end of the stacking conveyor 2 falls to the outermost stack 17. The next boards 15 are positioned from the stacking conveyor 2 p33 as they alternate next to the previous board 15 at desired intervals. The support tongues 20 of the stacking conveyor 2 are inclined obliquely from the horizontal with respect to the longitudinal axis of the conveyor 2. A roller chain 21 rotates around the edges of each support tongue 20. Since the support tongues 20 are in an oblique position, the chains 21 travel forward as they move at the outer edge of the tongues 20 and return at their lower edge. The grippers 22 in the chains 21 of the support tongues 20 are typed over the conveyor 2 p33n of the board 15 passing by the stacking conveyor 2. Since the chains 21 of the conveyor 2 extend obliquely over the ends of the support tongues 20, the boards 15 on the conveyor 2 fall precisely and in a controlled position into the stack 17, so that the projections 22 do not interfere with stacking during the return movement.

Siirtokuljettimen 1 k3yttfiketjupy0ran 3 ja ketjupyfir3n 4 v3-linen etaisyys pienenee vaunun 6 ja pinoamiskuljettimen 2 palatessa takaisinpain. Pinoamiskuljetin 2 voidaan palauttaa takaisin alkuasentoonsa siirtokuljettimen l nopeutta muutta-matta. Vaunun 6 tullessa alkuasentoonsa ketjupyOraa 9 pyOrittava moottori pysahtyy ja samalla vaunun 6 liike py-s3htyy. Kun pinoamiskuljetin 2 tayttyy uudelleen, ensimmai- 7 90334 nen kuljettimella 2 oleva lauta katkaisee ensimmaisen valo-kennon 23 sateen ja vaunu 6 alkaa liikkua eteenpSin edelia kuvatulla tavalla ja seuraava kerros pinotaan kuten edelli-nenkin.The distance between the drive chain wheel 3 of the transfer conveyor 1 and the chain wheel 4 decreases as the carriage 6 and the stacking conveyor 2 return. The stacking conveyor 2 can be returned to its initial position without changing the speed of the transfer conveyor l. When the carriage 6 reaches its initial position, the motor rotating the chain wheel 9 stops and at the same time the movement of the carriage 6 stops. When the stacking conveyor 2 is refilled, the first board on the conveyor 2 cuts off the rain of the first photocell 23 and the carriage 6 starts to move forward as described above, and the next layer is stacked as before.

Kun vaunu 6 on palannut alkuasentoonsa, pinotun kerroksen paaile lasketaan rimoituslaitteella 19 tarvittava maara v3-lirimoja 18. Rimoituksen jalkeen pinonosturi 16 laskee pinoa pinotun kerroksen ja rimoituksen paksuuden verran alaspain. Nykyisin tunnetaan useita erilaisia rimoituslaitteita ja pi-nonostureita, joten niiden toimintaa ei selosteta tassa 13-hemmin.When the carriage 6 has returned to its initial position, the required number of v3 slats 18 is lowered onto the stacked layer by the stripping device 19. After the stripping, the stacking crane 16 lowers the stack by the thickness of the stacked layer and the striping. Several different stripping devices and stacking cranes are currently known, so their operation will not be described in more detail here.

Edelia kuvatun esimerkin lisaksi talla keksinndlia on muita-kin suoritusmuotoja. Esimerkissa kaikkia kuljettimia 1, 2 ja 14 kaytettiin yhdelle akselille 3 liitetyn toimilaitteen vaiitykselia. Ainoastaan vaunun 6 paluuliiketta vårten tar-vittiin erillinen sahkfimoottori. Jokainen kuljetin voidaan tietenkin varustaa omalla moottorilla, jolloin eri kuljetti-mien nopeuksia voidaan saataa toisistaan riippumatta. Raken-ne on kuitenkin monimutkaisempi ja kalliimpi. Valokennojen 23 ja 24 tilalla voidaan kayttaa mita tahansa muita rajakytki-mia, kuten magneettisesti, sahkfiisesti tai mekaanisesti toi-mivia.In addition to the example described above, there are other embodiments of the present invention. In the example, all conveyors 1, 2 and 14 were driven by a silencer of an actuator connected to one shaft 3. Only a separate electric motor was needed for the 6 return movements of the trolley. Of course, each conveyor can be equipped with its own motor, so that the speeds of the different conveyors can be achieved independently of each other. However, the structure of them is more complex and more expensive. Instead of the photocells 23 and 24, any other limit switches can be used, such as those that are magnetically, saxically or mechanically operated.

T3ssa esimerkissa pinoamiskuljetin 2 oli sovitettu liikutet-tavaan vaunuun 6, ja siirtokuljettimen 1 pituutta muutettiin vaunun 6 aseman mukaan. Vaihtoehtoisesti voidaan pinoamis-kuljettimen 2 radan pituutta muuttaa, jolloin pinoamiskuljetin 2 on kiinnitetty vaunuun kuten edellisessakin esimerkissa ja sen radan pituuden muuttuminen on mahdollis-tettu samantapaisella ketjupyOraj3rjestelylia kuin siirtokulj ettimen 1 pituuden muuttuminen edelia kuvatussa esimerkissa. Pinoamiskuljettimesta 2 voidaan tehda myds riittavan pitka kiinteapituuksinen kuljetin. Se voidaan sovittaa osit-tain siirtokuljettimen 1 alle alkuasennossa ja pinottessa pinoamiskuljetin 2 tyflnnetaan siirtokuljettimen 1 alta pinon 8 90334 17 ylle. TSllflin minkaan kuljettimen pituus ei muutu, mutta siirtokuljettimen 1 p33n asema pinoamiskuljettimen 2 suhteen muuttuu. Kannatinkielien 20 ja ketjujen 21 lukumaarS vali-taan pinottavien kappaleiden 15 mukaan. Pitkia ja painavia kappaleita pinottaessa saatetaan tarvita useampian kannatti-mia.In this example, the stacking conveyor 2 was fitted to the movable carriage 6, and the length of the transfer conveyor 1 was changed according to the position of the carriage 6. Alternatively, the track length of the stacking conveyor 2 can be changed, whereby the stacking conveyor 2 is attached to the carriage as in the previous example and its track length can be changed by a chain arrangement similar to that of the transfer conveyor 1 in the example described above. The stacking conveyor 2 can be made into a conveyor of a sufficiently long fixed length. It can be partially fitted under the transfer conveyor 1 in the initial position, and when stacking, the stacking conveyor 2 is pushed from below the transfer conveyor 1 over the stack 8 90334 17. The length of the conveyor of TSllflin does not change, but the position of the transfer conveyor 1 p33n with respect to the stacking conveyor 2 changes. The number of support tongues 20 and chains 21 is selected according to the stackable pieces 15. When stacking long and heavy pieces, more brackets may be needed.

Kappaleet 15 voidaan pinota joko vaiirimojen 18 kanssa halu-tuin vMlein, kuten pinottaessa sahatavaraa kuivausta vårten, taikka kappaleet 15 voidaan pinota vierekkain ilman vSlejS, kuten pakattaessa kuivaa sahatavaraa kuljetusta ja varas-tointia vårten. Sahatavaran pakkaamisen ja pinoamisen lisSk-si tam3n keksinnfin avulla voidaan pinota ja pakata muitakin pitkSnomaisia kappaleita, kuten esimerkiksi muovisia tai me-tallisia profiilivalmisteita.The pieces 15 can be stacked either with the slats 18 at desired vMle, such as when stacking lumber for drying, or the pieces 15 can be stacked side by side without vSlejS, such as when packing dry lumber for transport and storage. In addition to packaging and stacking lumber, the invention can also be used to stack and package other elongate pieces, such as plastic or metal profile products.

Claims

A method for stacking elongate pieces in the transverse direction of n3i, the method comprising: - the pieces (15) are continuously fed by a distribution conveyor (14) to a chain conveyor type transfer conveyor (1), - the pieces (15) are transferred to a stacking conveyor (2) at the transfer conveyor (1); comprising at least one continuous chain-shaped transfer member (21) which is moved as a loop, - the stacking conveyor (2) is moved at least partially beyond the stack (17), and - the stacking conveyor (2) is moved in the width direction of the stack (17) and at the same time ) dropping one at a time from the end (2) of the conveyor to the stack (17) at the desired steps, to stack them on the stack (17) on the stack crane (16), characterized in that - the continuous chain-shaped transfer member (21) of the stacking conveyor is moved by a loopM, the plane passing through the forward-passing part and the returning part forming an acute angle with the horizontal, the length of the stacking conveyor (1) is increased as the valence of the distribution conveyor and the stacking conveyor (2) is increased when the stacking conveyor (2) is moved so that the path of the moving pieces between the distribution conveyor (14) and the stacking conveyor (2) remains continuous. 9 0 3 3 4 10

A method according to claim 1, characterized in that the length of the chain portion of the chain of the transfer conveyor (1) having the pieces to be transferred is changed by moving the chain wheels (3, 4, 5, 7) forming the folds of the chain. 8) in relation to each other.

A method according to claim 1, characterized in that the head of the stacking conveyor (2) is first moved over the entire width of the stack (17) at the rear edge of the stack (17) and the pieces (15) are dropped into the stack (17) from this edge and the stacking conveyor is moved backwards at the same time.

A method according to claim 1, characterized in that the movement of the chains of the transfer conveyor (1) and the stacking conveyor (2) is stopped when the stacking conveyor (2) is moved over the stack (17).

A method according to claim 4, characterized in that when the chain of the transfer conveyor (1) is stationary, the bodies (15) are fed to the part of the transfer conveyor (1) formed during the extension of the transfer conveyor (1).

An apparatus for stacking elongate bodies (15) in a stack (17) on a stack crane (16), which apparatus comprises: - a conveyor (1) of the chain conveyor type, to which the bodies (15) can be fed by a distribution conveyor (14), and - a conveyor ( l) a stacking conveyor (2) arranged at least one chain-shaped transfer member (21), on which the pieces (15) fed to the transfer conveyor (1) can be transferred and which are adapted to be moved in the direction of the transfer conveyor (1) at least partially by a stack crane (16) ) on and back, whereby the pieces (15) transferred to the conveyor (2) η 90334 can be transferred by the transfer member (21) to the head of the conveyor (2) to be dropped one by one on the stack with desired shapes, characterized in that - the chain member of the stacking conveyor (2) is adapted loop so that the plane passing through the forward portion and the return portion thereof forms an acute angle with the horizontal plane.

Device according to Claim 6, characterized in that the stacking conveyor (2) is arranged on a movable carriage (6) which is arranged on the wheels (11) on at least one rail 12 parallel to the track path of the chain of the transfer conveyor (1).

Device according to Claim 7, characterized by a chain wheel (3 to 5, 7, 8), two (4, 5) of which are arranged on the carriage (6) and at least one of which (5) can be locked out of rotation and at least one (7) is arranged on a fixed shaft and through which the chain of the transfer conveyor (1) is adapted to pass, whereby the carriage (6) can be transferred by means of the chain of the transfer conveyor (1) by locking the lockable sprocket (5).

Device according to Claim 6, characterized in that the drive shaft of the transfer conveyor (14) is the same as the drive shaft of the transfer conveyor (1) and in that the drive gear (13) of the stacking conveyor is connected to the rotated shaft of the chain of the transfer conveyor (1).

9 q η 7 7, 4

Device according to Claim 6, characterized in that the chain-shaped transfer element (21) of the stacking conveyor (2) is a roller chain, the gripping points of which are connected to a gripper (22) and which are arranged to run along the outer edges of the support tongue (20).

Device according to Claim 6, characterized in that the stacking conveyor (2) consists of at least one longitudinally substantially horizontal and laterally inclined support tongue (20) mounted on the carriage (6) and a chain (21) arranged to rotate around this edge. ).

Device according to Claim 8, characterized in that at least two of the chain wheels (4, 5) are arranged on the movable carriage (6) and at least two (3, 7, 8) are in a fixed position relative to the carriage, the carriage (6) being moved by the conveyor ( 1) the length of the part of the chain with movable parts changes.

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