SE414482B

SE414482B - DEVICE FOR DOSAGE OF STANDARD ELECTRODES

Info

Publication number: SE414482B
Application number: SE7811397A
Authority: SE
Inventors: R Haugen
Original assignee: Esab Ab
Priority date: 1978-11-03
Filing date: 1978-11-03
Publication date: 1980-08-04
Also published as: CH643196A5; SE7811397L; IT7927023A0; DE2942861A1; IT1124913B

Description

78113974: ' 2 bandets hastighet och/eller en minskning av avståndet mellan de för elektroderna avsedda traneportfickorna på bandet. En ändring i denna riktning medför dock att tidsintervallen mellan två elektroder blir så kort, att klaffen inte hinner att omställas under denna tid. Elektroderna faller dessutom inte exakt i parallellt läge mot den omställbara klaffen. 78113974: '2 the speed of the belt and / or a reduction of the distance between the crane pockets on the belt intended for the electrodes. A change in this direction, however, means that the time intervals between two electrodes become so short that the flap does not have time to adjust during this time. In addition, the electrodes do not fall exactly in parallel position against the adjustable flap.

Längden av den verkliga tidsintervallen mellan två elektroder avviker därför avsevärt från det teoretiska värdet. Klaffen måste omställas under en tid, som är väsentligen kortare än denna teoretiska tidsintervall, eftersom den mot de nedfallande elektrodarna riktade klaffkanten under omställningen inte får komma i kontakt med någon nedfallande elektrod, vilket i så fall skulle medföra störningar och driftavbrott. Förpackningshastig- heten bestäms således huvudsakligen av klaffens omställninge- hastighet.The length of the actual time intervals between two electrodes therefore deviates considerably from the theoretical value. The flap must be adjusted for a period of time which is substantially shorter than this theoretical time interval, since the flap edge directed towards the falling electrodes must not come into contact with a falling electrode during the changeover, which would then lead to disturbances and interruptions. The packing speed is thus mainly determined by the switching speed of the flap.

Dan föreliggande uppfinningen, som har till syfte att öka dose- ringshastigheten vid förpackningsmaskinar för avetselektroder och som utgår från en anordning av det inledningsvis nämnda slaget, utmärker sig därigenom, att en fördelare är anordnad att mottaga de från transportören frammatade elektroderna och att tillföra varannan elektrod till den ena och de övriga Ielaktroderna till den andra av var sitt räknedon påverkbara, * mellan två lägen omställbara, nedanför fördelaren anordnad och av ett mellanrum från fördelaren åtskild gejd, varvid varje räknedon är anordnat att på i och för sig känt sätt räkna de genom mellanrummet fritt fallande elektroderna, att magasin för mottagning av elektroderna är anbragta i anslutning till gejderna, varvid varje gejd är anordnad att i sitt ena läge leda elektroderna till det ena och i sitt andra läge till det andra av två med gejden samverkande magasin, vilka är försedda med var sin tömningsanordning anordnad att samverka med gejden på sådant sätt, att gejden i sitt ena läge leder elektroderna till det ena magasinet, när dess tömningeanordning är inaktiverad ochtömningsanordningen av det andra magasinet är aktiverad, och att gejden i sitt andra läge leder elektroderna till det andra magasinet, när dess tömningsanordning är inaktivarad och töm- ningsanordningen av det andra magasinet är aktiverad. zh 7811397-4 Den av transportören frammatade kontinuerliga strömmen av elektroder delas i fördelaren i två delströmmar. Tidsinter- vallen mellan de passerande elektroderna i varje delström är därmed dubbelt så stor jämFört med frammatningsintervallen vid transportören. Doseringshastigheten kan fördubblas vid bibehållen omställningshastighet av gejderna jämfört med de kända anordningarna.The present invention, which has for its object to increase the dosing speed in packaging machines for degreasing electrodes and which starts from a device of the kind mentioned in the introduction, is characterized in that a distributor is arranged to receive the electrodes fed from the conveyor and to supply every other electrode to one and the other electrodes to the other by each calculator can be actuated, * adjustable between two positions, arranged below the distributor and by a space separated from the distributor, each calculator being arranged to count them in a manner known per se. the free-falling electrodes, that magazines for receiving the electrodes are arranged in connection with the guides, each guide being arranged to guide the electrodes in one position to one and in its other position to the other of two magazines cooperating with the guide, which are provided with their own emptying device arranged to cooperate with the guide in such a way, that the guide in its one position leads the electrodes to one magazine, when its emptying device is deactivated and the emptying device of the other magazine is activated, and that the guide in its second position leads the electrodes to the other magazine, when its emptying device is inactivated and the emptying device of the other tray is activated. zh 7811397-4 The continuous current of electrodes supplied by the conveyor is divided in the distributor into two substreams. The time intervals between the passing electrodes in each substream are thus twice as large as the feed intervals at the conveyor. The dosing rate can be doubled while maintaining the rate of change of the guides compared to the known devices.

Ytterligare fördelaktiga utföringsformer av uppfinningen fram- går av underkraven.Further advantageous embodiments of the invention appear from the subclaims.

Uppfinningen kommer nu närmare att beskrivas i samband med den bifogade ritningen, som visar ett utföringsexempel av densamma.The invention will now be described in more detail in connection with the accompanying drawing, which shows an embodiment of the same.

Fig. 1a och 1b visar schematiskt en känd anordning för satsvis tillförsel av svetselektroder till en Förpackning.Figs. 1a and 1b schematically show a known device for batch supply of welding electrodes to a package.

Fig. 2a och 2b visar schematiskt en anordning enligt uppfinningen För eatevie tillförsel av evetaeloktroder till en Förpackning.Figs. 2a and 2b schematically show a device according to the invention For the supply of evetael electrodes to a package.

Fig. 3 visar något echemetiekt en fördelare För uppdelning av en ström av frammatade elektroder i två delströmmar.Fig. 3 shows somewhat distributively a distributor For dividing a current of supplied electrodes into two substreams.

Vid en känd anordning För satsvis tillförsel av svetselektroder till en Förpackning 1 transporteras elektroderna 2 i transport- Fickor 3 av ett ändlöst transportband 4 från ett här ej visat Förråd till en övre vändrulle 5, varifrån bandet 4 lades nedåt genom ett schakt 6 till en undre vändrulle 7. När bandets transportriktning ändras vid den undre vändrullen Faller elek- troderna ur schaktet 6 och räknas vid passagen av en ljusbarriär 8. Elektroderna Faller i en behållare 9, varvid de styrs av en omställbar klaff 1D mot den ena eller den andra delbshållaren 11, 12, som på undersidan är försedd med en med spjäll 13, 14 öpp- ningsbar lucka För tömning av delbehàllaroas innehåll till den under behållaren fremmatade Förpackningen. När klaffen 1D leder elektroderna till den ena delbehållaren 12, stängs den av spjället 14, medan spjället 13 öppnar den andra delbehållaren 11, såsom visat i Fig. 1a. När det rätta antalet elektroder har samlats i delbehållaren 12, umställes klaffen 10 till det i fig. 1b visade läget. Denna omställning måste ske så snabbt, att klaffens styrkant 15 inte stöter emot någon nedfallande elektrod, vilket i så Fall skulle leda till en okontrollerbar 78113974! 4 ändring av elektrodens läge under dess fall med driftstür- ningar som följd. Avståndet och tidsintervallen mellan de nedfallande elektroderna bestäms av avståndet mellan trans- portfickorna 3 på bandet 4 och bandets hastighet. Eftersom elektroderna under sitt fria fall från schaktet 6 till be- hållaren i allmänet inte bibehåller sitt inbördes parallella läge blir den tidsintervall, som kan utnyttjas för klaffene omställning, mindre än teoretiskt skulle vara fallet. För- packningshastigheten är beroende av klaffene omställninge- hastighet och den minsta, praktiskt uppträdande intervallen mellan elektroderna.In a known device For batch supply of welding electrodes to a Package 1, the electrodes 2 are transported in transport pockets 3 by an endless conveyor belt 4 from a store not shown here to an upper turning roller 5, from where the belt 4 was laid down through a shaft 6 to a lower one. turning roller 7. When the conveying direction of the belt changes at the lower turning roller, the electrodes fall out of the shaft 6 and are counted at the passage of a light barrier 8. The electrodes fall into a container 9, whereby they are guided by an adjustable flap 1D towards one or the other part holder 11 , 12, which on the underside is provided with a hatch that can be opened with dampers 13, 14 For emptying the contents of the partial container to the Package fed under the container. When the flap 1D leads the electrodes to one sub-container 12, it is closed by the damper 14, while the damper 13 opens the other sub-container 11, as shown in Fig. 1a. When the correct number of electrodes has been collected in the sub-container 12, the flap 10 is adjusted to the position shown in Fig. 1b. This adjustment must take place so quickly that the guide edge 15 of the flap does not abut any falling electrode, which in that case would lead to an uncontrollable 78113974! 4 change the position of the electrode during its fall with operating disturbances as a result. The distance and time intervals between the falling electrodes are determined by the distance between the transport pockets 3 on the belt 4 and the speed of the belt. Since the electrodes during their free fall from the shaft 6 to the container generally do not maintain their mutually parallel position, the time interval which can be used for the flap adjustment becomes smaller than would theoretically be the case. The packaging speed depends on the flap adjustment speed and the smallest, practically occurring intervals between the electrodes.

I fig. 2a och 2b matas elektroderna 16 av en bandtransportör 17 från ett här ej visat förråd av elektroder till en fördelare 18, som beskrivs närmare i samband med fig. 3. Den av trans- portbandet tillförde strömmen av elektroder delas i fördelaren i två deletrömmar, varav den ena innehåller varannan elektrod och den andra daletrömmen de övriga elektroderne. Elektroderna i varje delström Faller fritt från fürdelaren mot en magasine- anordning 19 och passerar därvid var sin räknare 20, 21, som består av en ljuakälla 20a, 21a och en fotocell Züb, 21b.In Figs. 2a and 2b, the electrodes 16 are fed by a belt conveyor 17 from a supply of electrodes (not shown here) to a distributor 18, which is described in more detail in connection with Fig. 3. The current of electrodes supplied by the conveyor belt is divided in the distributor into two sub-currents, one of which contains every other electrode and the other the valley current the other electrodes. The electrodes in each sub-current fall freely from the distributor towards a magazine device 19 and thereby pass their respective counters 20, 21, which consist of a light source 20a, 21a and a photocell Züb, 21b.

Magasinsanordningen 19 har tvâ väggelement 22, 23 och två klaffar 24, 25, som är svängbara kring var sin axel 26, 27.The magazine device 19 has two wall elements 22, 23 and two flaps 24, 25, which are pivotable about their respective axes 26, 27.

Väggelamenten 22, 23, klaffarna 24, 25 och axlarna 26, 27 är symmetriskt anordnade med avseende på elektrodernas båda fall- plan. De båda väggelementen 22, 23 har till uppgift att till- sammans med den motsvarande klaffen 24, 25 bilda tvâ magasin 28, 29 för elektroderna. Varje väggelement behöver därför i _sin enklaste form enbart bestå av ett par i elektrodens rikt- ning bakom varandra anbregta stöttor.The wall elements 22, 23, the flaps 24, 25 and the shafts 26, 27 are arranged symmetrically with respect to both falling planes of the electrodes. The task of the two wall elements 22, 23 is to together with the corresponding flap 24, 25 form two magazines 28, 29 for the electrodes. Each wall element therefore in its simplest form need only consist of a pair of supports arranged one behind the other in the direction of the electrode.

I fig. 2a ligger klaffarna 24, 25 med aina nedre kanter 30, 31 an mot var sitt väggelement 22, 23 och bildar för varje del- ström av elektroderna de båda magesinen 28, 29. I sitt andra omställningsläge är klaffarnas 30, 31 nedre kanter förda mot varandra (rig. zb) ash klaffarna bildar ett för båda delstram- mar gemensamt magasin 32. När klaffarna 24, 25 omställes från det ena till det andra läget tömmas samtidigt det av klaffarna förut bildade magasinets innehåll i en förpackning 33. 5 7811397-4 Intervallen mellan de nedfallande elektroderna är, jämfört med den i fig. 1a och 1b visade anordningen vid samma band- hastighet och samma avstånd mellan bandets transportfiokor, dubbelt så stor. Vid oförändrad omställningshastighet är det möjligt att utan risk för driftstörningar minska intervallen mellan elektroderna i varje delström till samma värde, som vid en anordning enligt Fig. 1a ooh 1b med enbart en ström av elektroder. Detta betyder att bandhastigheten kan ökas och/eller avståndet mellan transportfickorna kan minskas i sådan utsträekning, att antalet Frammatade elektroder per tidsenhet fördubblas jämfört med det antal, som maximalt kan frammatas i en anordning med enbart en ström av elektroder.In Fig. 2a, the flaps 24, 25 with one lower edges 30, 31 abut each of the wall elements 22, 23 and form for each substream of the electrodes the two magazines 28, 29. In their second adjustment position the flaps 30, 31 are lower. edges brought towards each other (rig. zb) the ash flaps form a magazine 32 common to both sub-trunks. 7811397-4 The intervals between the falling electrodes, compared with the device shown in Figs. 1a and 1b, are twice as large at the same belt speed and the same distance between the conveyor beams of the belt. With an unchanged changeover speed, it is possible to reduce the intervals between the electrodes in each substream to the same value without risk of operational disturbances, as in a device according to Figs. 1a and 1b with only one current of electrodes. This means that the belt speed can be increased and / or the distance between the transport pockets can be reduced to such an extent that the number of fed electrodes per unit of time is doubled compared to the maximum number that can be fed in a device with only one current of electrodes.

Därmed fördubblas också Förpackningshaetigheten. I Den i Pig. 3 mera i detalj visade bandtransportören 17 är För- sedd med transportfickor 33, som bildas av i frammatnings- riktningen Framåtlutande lister 34. Bandet 17 föras över en övre styrrulle 35 och lämnar denna i vertikal riktning.This also doubles the packaging speed. I Den i Pig. The belt conveyor 17 shown in more detail in Fig. 3 is provided with transport pockets 33, which are formed in the feed direction. Forwardly inclined strips 34. The belt 17 is passed over an upper guide roller 35 and leaves it in the vertical direction.

Bandets 1? riktning ändras ånyo vid en undre styrrulle 36 och bandet bortledes till ett här sj visat förråd, från vil- ket elektroderna på känt sätt uttages en efter en.Bandets 1? The direction is again changed at a lower guide roller 36 and the strip is diverted to a storage shown here, from which the electrodes are removed one by one in a known manner.

En hjälptransportbrs ändlösa band 37 Frammatas med samma has- tighet, eom bandet 17. Bandet 37 förse med hjälp av två styr- rullar 35, 39 parallellt med och nära intill bandets 17 verti- kala Frammatningssträcka. Bandet 37 är försett med V-formiga lister 40, vars inbördes avstånd är dubbelt så stort som av- ståndet mellan listerna 34 av bandet 17. Vid bandets 37 nedåt- rörelse bildar den ena skänkeln 41 av varje V-list 34 till- sammans med bandet 37 en grupp av uppåt öppna fickor 42.The endless belt 37 of an auxiliary conveyor is fed at the same speed as the belt 17. The belt 37 is provided with the aid of two guide rollers 35, 39 parallel to and close to the vertical feeding distance of the belt 17. The belt 37 is provided with V-shaped strips 40, the mutual distance of which is twice as great as the distance between the strips 34 of the belt 17. Upon the downward movement of the belt 37, one leg 41 of each V-strip 34 together with strap 37 a group of upwardly open pockets 42.

Likaså bildar den andra skänkeln 43 med en motsvarande list 34 av bandet 17 en grupp av fickor 44.Likewise, the second leg 43 with a corresponding strip 34 of the strap 17 forms a group of pockets 44.

När bandet 17 förse runt den övre styrrullen 35 glider elek- troderna 16 ur sina Fickor och längs bandet mot baksidan av den Framförvarande listen. En styrplåt 45, som sträcker sig fram till det ställe, där bandet 17 och bandet 37 möts, hind- rar elektroderna från att falla ur transportbandet. Varannan elektrod Faller sedan ned i fickorna 42 av hjälptransportören, medan de övriga elektrbderna kvarhålles vid.bandet 17 av list- skänklarna 43. Fördelningen av elektroderna till båda grupperWhen the belt 17 provides around the upper guide roller 35, the electrodes 16 slide out of their pockets and along the belt towards the back of the forward strip. A guide plate 45, which extends to the place where the belt 17 and the belt 37 meet, prevents the electrodes from falling out of the conveyor belt. Every other electrode then falls into the pockets 42 of the auxiliary conveyor, while the other electrodes are retained at the belt 17 by the strip legs 43. The distribution of the electrodes to both groups

Claims

7811397-4 in 6 of pockets 42 and 44 is completed, when both bands change their feed directions at the lower guide rollers 36, 39. The pockets 42 are emptied due to their rotation around the guide roller 39. The electrode slides down along one wedge surface 47 of a guide wedge 46, which with its wedge edge 48 is arranged at the place where the two bands 17, 37 are separated according to their vertical movement. The electrodes then fall freely against the magazine device 19 described in connection with Figs. 2a and 2b, passing the counter 20. The pockets 44 open at the moment when the strip leg 43 leaves the strip 34, which takes place in the immediate vicinity of the wedge edge 48. The electrodes from the pockets 44 slide down along the second wedge surface 49 and fall towards the magazine 19, passing the second counter 21. The adjustment of the two flaps 24,, 25 is controlled by the counters 20, 21 and is executed each time a certain, a The packaging set constituting the number of electrodes has passed the two light barriers. The Packages 33, which receive the batch-delivered electrodes from the magazine device 19, are conveyed with a chain conveyor 50 with entrainer 51 to the magazine device 19 and thence to a Packaging Station (not shown here). Data requirements

Device for dosing rod-shaped electrodes with a conveyor for advancing the electrodes one by one in a parallel position to a calculator, which cooperates with a control device which can be switched by the calculator. For guiding a certain number of electrodes determined by the calculator to one in connection with the control device arranged container, characterized in that a distributor (18) is arranged to receive the electrodes fed from the conveyor (17) and to supply each other electrode to one and the other electrodes to the other of their respective calculators ( 20, 21) adjustable, adjustable between two positions, below For the distributor arranged and by a space separated from the distributor (24, 25), each calculator being arranged to count in a manner known per se those through the space Freely falling electrodes, that magazines (28, 29, 32) for receiving the electrodes are arranged in connection with the guides, each guide being arranged to in one position leading the electrodes to one and in its second position to the other by two magazines (28, 32) cooperating with the guide (24, 25); 29, 32), which are each provided with a discharge device arranged to cooperate with the guide in such a way that the guide in its one position leads the electrodes to one magazine, when its emptying device is inactivated and the emptying device of the other magazine is activated and that the guide in its second position leads the electrodes to the second magazine, when its emptying device is inactivated and the emptying device of one magazine is activated.

Device according to claim 1, characterized in that each magazine has a discharge opening equipped with a locking device for electrode passage to a package which can be fed under the magazines, wherein the guide and the locking device of each magazine are arranged to cooperate in such a way that the guide in its one position leads the electrodes to one magazine, the discharge opening of which is kept locked by means of the locking device, while at the same time the discharge opening of the other magazine is open and the guide in its second position leads the electrodes to the other magazine, its discharge opening is kept locked while one magazine is emptying open.

Device according to claim 2, characterized in that the guide (24; 25), which constitutes an adjustable partition wall between the magazines (28, 32; 29, 32), also serves as a locking device and is arranged to open the emptying opening in one magazine and at the same time lead the electrodes to the other magazine and vice versa.

Device according to Claim 3, characterized in that the magazines consist of two wall elements (22, 23), which are arranged below the distributor (18) on opposite sides of the falling plane defined by the falling electrodes and whose surfaces face each other. are parallel to the electrodes, and two between the wall elements arranged next to each other and between two positions Adjustable flaps (24, 25), which are pivotable through a vertical plane about each axis (26, 27) parallel to the electrodes, the flaps (24, 25) with their lower edges (38, 7811397-4 f * 31) in their one position are directed towards each other to form a single magazine (32) and in their second position are led towards the nearest wall element (22, 23). mad this form each its magazine (28, 29).

Device according to claim 4, characterized in that the wall elements (22, 23), the flaps (24, 25) and the shafts (25, 27) are arranged symmetrically with respect to the two fall planes. '

Device according to one of Claims 1 to 5, in which the conveyor consists of a first belt conveyor with fixedly spaced apart objects projecting from the belt plane, with respect to the feed direction. Forwardly inclined conveyor hooks for the electrodes fed in parallel and horizontally on the transverse feed. , characterized in that the distributor (18) is equipped with a second belt conveyor (37) synchronously feedable with the first belt conveyor (17) with V-shaped transport hooks (40) arranged at twice the said distance from each other, of which one V-ankle (44) is inclined backwards and is fastened with its Free end to the other conveyor belt (37), that the two belt conveyors (17, 37) are provided with their respective upper and lower belt conveyor rollers. (35, 36; 38, 39), between which the two bands (17, 37) are advanced parallel downwards and close to each other, the V-legs (41) attached to the band forming a first group of upwardly open a pockets (42) For supporting each other of the First belt conveyor (17) The feed electrode (16) and the second legs (43) together with each other of the forwardly inclined backs of the conveyor hooks (34) of the First belt conveyor (17) form a second group of upwardly open pockets (44) for supporting the other electrodes and that both conveyor belts (17, 37) in connection with the parallel conveyor section abut against the periphery of each lower conveyor roller (36, 39), so that the said pockets (42 , 44) are rotated and open downwards, cooperating with each of the downwardly sloping guide rails (47, 48) arranged to receive the electrodes projecting from the pockets (42, 44) and to guide them to their respective guides (24, 25), wherein the lower end of the guide rail and the guide (24, 25) are separated by the said gap.