RS65616B1

RS65616B1 - Log ejection group and relative ejection method

Info

Publication number: RS65616B1
Application number: RS20240639A
Authority: RS
Inventors: Giovanni Buffa; Fabio Picchi; Paolo Lazzareschi
Original assignee: Gambini Spa
Priority date: 2021-12-02
Filing date: 2022-11-30
Publication date: 2024-07-31
Also published as: EP4190731A1; ES2982781T3; PL4190731T3; FI4190731T3; EP4190731B1; US20230174333A1

Description

Opis Description

[0001] Predmetni pronalazak se odnosi na grupu za izbacivanje kotura i na odgovarajući postupak izbacivanja. [0001] The present invention relates to a reel ejection group and a corresponding ejection procedure.

[0002] Na kraju koraka namotavanja kotura u mašini za premotavanje, kotur se izbacuje određenom brzinom sa valjaka za namotavanje, koja je veća što je veća brzina namotavanja. [0002] At the end of the coil winding step in the rewinding machine, the coil is ejected from the winding rollers at a certain speed, which is higher the higher the winding speed.

[0003] Kotur se tada mora zaustaviti da bi se dopremio u sledeće stanice, posebno u uređaj za lepljenje kraja. [0003] The reel must then be stopped in order to be delivered to the following stations, especially to the end gluing device.

[0004] Poznati sistem koji se koristi za usporavanje kotura obuhvata nagnutu ravan nad kojom se nalazi gornja pokretna konstrukcija, zaobljenog oblika u pravcu prijema kotura, postavljena direktno u poziciju da presreće kotur kako bi zaustavila kotur. Površina koja dolazi u kontakt sa koturom je napravljena od mekog materijala kako bi se smanjio udar kotura o nju i smanjio rizik od oštećenja. Kada je kotur zaustavljen, konstrukcija se podiže pomoću klipa kako bi se kotur spustio prema uređaju za lepljenje, što se odvija kotrljanjem duž završnog dela nagnute ravni, korišćenjem samo sile gravitacije. [0004] The known system used to decelerate the reels includes an inclined plane above which there is an upper movable structure, rounded in the direction of receiving the reels, placed directly in a position to intercept the reel in order to stop the reel. The surface that comes into contact with the reel is made of soft material to reduce the impact of the reel on it and reduce the risk of damage. When the roll is stopped, the structure is lifted by a piston to lower the roll towards the gluing device, which is done by rolling along the end of the inclined plane, using only the force of gravity.

[0005] Ovaj sistem, koji zaustavlja kotur dok se kotrlja po nagnutoj ravni, a zatim ga oslobađa da bi omogućio početak novog kotrljanja, jednostavan je i jeftin, ali ne garantuje pravilan rad kada mašina za premotavanje proizvodi veliki broj kotura po minuti. U stvari, nakon što ga je zaustavio meki deo gornje konstrukcije, koturu je potrebno određeno vreme, reda desetinki sekunde, da se ponovo zakotrlja. Ovo je značajno vreme u slučajevima kada se proizvodi 50-60 kotura/min i stoga je stopa prispeća koturova blizu jedne sekunde. [0005] This system, which stops the reel while rolling on an inclined plane and then releases it to allow the start of a new rolling, is simple and inexpensive, but does not guarantee proper operation when the rewinding machine produces a large number of reels per minute. In fact, after being stopped by the soft part of the superstructure, the reel takes a certain amount of time, on the order of tenths of a second, to roll again. This is a significant time in cases where 50-60 rolls/min are produced and therefore the roll arrival rate is close to one second.

[0006] Predložena su druga sredstva za usporavanje povezana sa nagnutom ravni za istovar i postavljena u fazi sa izlazom kotura iz zone namotavanja, kao što je na primer rotirajući leptir u WO 03/002439 A1, ili rotirajući sektor u WO 2015/040644 A1, koji preuzimaju odgovornost za pojedinačne izlazne koturove, zaustavljaju ih i prenose rotacijom leptira ili rotacionog sektora na krajnji uređaj za lepljenje kraja postavljen nizvodno. [0006] Other deceleration means have been proposed, connected to the inclined unloading plane and placed in phase with the exit of the rolls from the winding zone, such as for example the rotating butterfly in WO 03/002439 A1, or the rotating sector in WO 2015/040644 A1, which take responsibility for the individual exiting reels, stop them and transfer them by rotation of the butterfly or rotary sector to the final end-gluing device placed downstream.

[0007] WO 2017/145185 A1 predlaže usporavanje kotura pomoću niza valjaka postavljenih iznad blago nagnute ravni postavljene na izlazu iz premotača, u kojima se valjci rotiraju progresivno manjim brzinama. Rastojanje između valjaka i ravni je nešto manje od prečnika kotura kako bi se presreo svaki kotur koji prolazi na ravni. Interakcija kotura sa rotirajućim valjkom iznad i fiksnom ravni ispod predstavlja važno ograničenje za brzinu rotacije valjaka, a samim tim i za mogućnost usporavanja kotura i u svakom slučaju povlači za sobom visok rizik od oštećenja kotura. [0007] WO 2017/145185 A1 proposes decelerating the reels by means of a series of rollers placed above a slightly inclined plane placed at the exit of the rewinder, in which the rollers rotate at progressively lower speeds. The distance between the rollers and the plane is slightly smaller than the diameter of the rollers in order to intercept any roller passing on the plane. The interaction of the rollers with the rotating roller above and the fixed plane below represents an important limitation for the speed of rotation of the rollers, and therefore for the possibility of slowing down the rollers, and in any case entails a high risk of damage to the rollers.

[0008] Cilj predmetnog pronalaska je da obezbedi grupu za izbacivanje kotura i odgovarajući postupak izbacivanja pogodan za rad sa premotačima visokih performansi, čime se rešavaju nedostaci poznatih sistema. [0008] The objective of the present invention is to provide a reel ejection group and a corresponding ejection procedure suitable for working with high performance rewinders, thereby solving the shortcomings of known systems.

[0009] Drugi cilj predmetnog pronalaska je da obezbedi grupu za izbacivanje kotura i odgovarajući postupak izbacivanja koji ne oštećuje koturove uprkos velikim brzinama rotacije. [0009] Another object of the present invention is to provide a reel ejection group and a suitable ejection procedure that does not damage the reels despite high rotational speeds.

[0010] Još jedan cilj predmetnog pronalaska je da obezbedi grupu za izbacivanje kotura i odgovarajući postupak izbacivanja koji može da progresivno prati kotur ka izlazu iz premotača. [0010] Another object of the present invention is to provide a reel ejection group and a corresponding ejection process that can progressively follow the reel toward the exit from the rewinder.

[0011] Još jedan cilj predmetnog pronalaska je da obezbedi grupu za izbacivanje kotura i odgovarajući postupak izbacivanja koji je posebno jednostavan i funkcionalan sa niskim troškovima. [0011] Another object of the present invention is to provide a reel ejection group and a corresponding ejection procedure that is particularly simple and functional with low costs.

[0012] Ovi ciljevi prema predmetnom pronalasku se postižu obezbeđivanjem grupe za izbacivanje kotura i odgovarajućeg postupka izbacivanja kao što je navedeno u nezavisnim patentnim zahtevima. [0012] These objects according to the present invention are achieved by providing a reel ejection group and a corresponding ejection procedure as set forth in the independent patent claims.

[0013] Dalje karakteristike su date u zavisnim patentnim zahtevima. [0013] Further features are given in the dependent patent claims.

[0014] Karakteristike i prednosti grupe za izbacivanje kotura i odgovarajućeg postupka izbacivanja prema predmetnom pronalasku postaće očiglednije iz sledećeg opisa, kao primer, a ne kao ograničenje, uz upućivanje na prateće shematske slike nacrta u kojima: [0014] The characteristics and advantages of the reel ejection group and corresponding ejection method according to the present invention will become more apparent from the following description, by way of example and not limitation, with reference to the accompanying schematic drawing figures in which:

slika 1 je pogled odozgo na grupu za izbacivanje kotura prema predmetnom pronalasku; slika 2 je shematski presek duž ravni traga II-II grupe za izbacivanje kotura sa slike 1; slika 3 je shematski presek duž ravni traga III-III grupe za izbacivanje kotura sa slike 1; slika 4 prikazuje pomoću uvećanog detalja sredstvo za usporavanje grupe za izbacivanje kotura sa slike 1; Fig. 1 is a top view of a reel ejector assembly according to the present invention; Fig. 2 is a schematic section along the track plane of the II-II reel ejection group of Fig. 1; Fig. 3 is a schematic cross-section along the track plane of the III-III reel ejection group of Fig. 1; Fig. 4 shows in enlarged detail the means for retarding the reel ejector assembly of Fig. 1;

Slika 5 prikazuje pomoću uvećanog detalja sredstva za usporavanje grupe za izbacivanje kotura prema daljem tehničkom rešenju pronalaska. Fig. 5 shows in enlarged detail the means for slowing down the roll ejection group according to a further technical solution of the invention.

[0015] Uz upućivanje na slike, prikazana je grupa za izbacivanje, označena sa 10, 10’, koja upravlja izbacivanjem kotura 11 iz mašine za premotavanje, koja nije prikazana. [0015] With reference to the figures, there is shown an ejection group, designated 10, 10', which controls the ejection of the reel 11 from the rewinding machine, which is not shown.

[0016] Koturovi 11 namotani u premotaču izbacuju se uzastopno, rotirajući se prema strelici R linearnom izlaznom brzinom, shematski prikazanom strelicom F1, koja je veća, što je veća brzina namotavanja, prema onome što je shematski prikazano na slikama 4 i 5. [0016] The spools 11 wound in the rewinder are ejected sequentially, rotating according to the arrow R at a linear output speed, schematically shown by the arrow F1, which is higher, the higher the winding speed, according to what is shown schematically in Figures 4 and 5.

[0017] Grupa 10 za izbacivanje koja je predmet predmetnog pronalaska sadrži ravan 12 za istovar namotanih koturova 11 i sredstva za usporavanje kotura, postavljena i iznad i ispod ravni 12 za istovar. [0017] The ejection group 10 which is the subject of the present invention contains a plane 12 for unloading the wound reels 11 and means for slowing down the reels, placed both above and below the plane 12 for unloading.

[0018] U skladu sa prvim tehničkim rešenjem grupe 10 za izbacivanje prema pronalasku, sredstva za usporavanje kotura sadrže prvi gornji ulazni valjak 21, motorizovan, koji direktno sarađuje sa ravni 12 za istovar kako bi presreo koturove 11 koji pristižu na ravan 12 za istovar, i najmanje prvi par valjaka 123 za rukovanje, motorizovanih, koji se nalaze nizvodno od gornjeg ulaznog valjka 21 i koji sadrže gornji valjak 22 za rukovanje i donji valjak 23 za rukovanje da usporavaju koturove koje napreduju na ravni 12 za istovar. [0018] According to the first technical solution of the ejection group 10 according to the invention, the means for slowing down the reels comprise a first upper input roller 21, motorized, which directly cooperates with the unloading plane 12 to intercept the reels 11 arriving at the unloading plane 12, and at least a first pair of handling rollers 123, motorized, located downstream of the upper input roller 21 and containing the upper handling roller 22 and lower handling roller 23 to slow the rolls advancing on the unloading plane 12.

[0019] Prema sledećem tehničkom rešenju grupe 10’ za izbacivanje kotura prema pronalasku, prikazanoj na slici 5, postoji još jedan donji ulazni valjak 24 koji se nalazi uzvodno od para valjaka 123 za rukovanje i integrisan je u ravan 12 za istovar da bi obezbedio prvi gornji ulazni valjak 21 para ulaznih valjaka 114. [0019] According to the following technical solution of the reel ejection group 10' according to the invention, shown in Figure 5, there is another lower input roller 24 located upstream of the pair of handling rollers 123 and integrated into the unloading plane 12 to provide the first upper input roller 21 of the pair of input rollers 114.

[0020] U grupi 10’ za izbacivanje prema pronalasku, u prisustvu i para valjaka 123 za rukovanje i para ulaznih valjaka 114, dalji donji ulazni valjak 24 poželjno se realizuje u praznom hodu. [0020] In the ejection group 10' according to the invention, in the presence of a pair of handling rollers 123 and a pair of input rollers 114, the further lower input roller 24 is preferably realized in idle.

[0021] Međutim, može se takođe učiniti frikcionim kako bi se usporilo kotrljanje kotura 11 koje se hvata između valjka 21 i njega. Kotur 11 bi zatim nastavio do para valjaka 123 za rukovanje, što bi ga dodatno usporilo. [0021] However, it can also be made frictional in order to slow down the rolling of the roller 11 which is caught between the roller 21 and it. The reel 11 would then continue to a pair of handling rollers 123, further slowing it down.

[0022] Prema daljoj konfiguraciji pronalaska, dalji donji ulazni valjak 24 može biti motorizovan. [0022] According to a further configuration of the invention, the further lower input roller 24 may be motorized.

[0023] Grupa za izbacivanje, koja nije prikazana, koja sadrži još jedan par motorizovanih valjaka smeštenih nizvodno od para valjaka 123 za rukovanje takođe je deo pronalaska. [0023] An ejection assembly, not shown, comprising another pair of motorized rollers located downstream of the pair of handling rollers 123 is also part of the invention.

[0024] Donji valjci 23, 24 su integrisani u fiksni položaj u ravni 12 za istovar i postavljeni tako da njihova gornja generatriksa hvata prve nagnute delove 12’ ravni 12 za istovar, tj. tangencijalno na njih. [0024] The lower rollers 23, 24 are integrated in a fixed position in the unloading plane 12 and placed so that their upper generatrix captures the first inclined parts 12' of the unloading plane 12, i.e. tangential to them.

[0025] Ravan 12 za istovar je nagnuta ravan koja prihvata koturove 11 na izlazu iz premotača i prenosi ih do sledećih stanica. [0025] The unloading plane 12 is an inclined plane that receives the reels 11 at the exit from the rewinder and transports them to the next stations.

[0026] Ravan 12 za istovar može da se sastoji od uzastopnih delova koji takođe imaju različite nagibe jedan prema drugom i koji su diskontinuirani u poprečnom pravcu. [0026] The unloading plane 12 may consist of successive parts which also have different slopes to each other and which are discontinuous in the transverse direction.

[0027] U prikazanom primeru, prvi deo 12’ ravni 12 za istovar, koji prihvata kotur 11 koji velikom brzinom izlazi iz premotača, ima blagi nagib, dok drugi deo 12” ravni 12 za istovar, koji se nalazi nizvodno od para valjaka 123, ima veći nagib da olakša izlazak usporenih koturova 11 iz grupe 10. Drugi deo 12” u primeru je sačinjen od niza delova međusobno razmaknutih u poprečnom pravcu (slika 1). [0027] In the example shown, the first part 12' of the plane 12 for unloading, which accepts the reel 11 that exits the rewinder at high speed, has a slight slope, while the second part 12" of the plane 12 for unloading, which is located downstream of the pair of rollers 123, has a greater slope to facilitate the exit of the slow-moving reels 11 from the group 10. The second part 12" in the example is made of a series of parts spaced in the transverse direction (Figure 1).

[0028] Gornji valjci 21, 22 su postavljeni na gornjoj konstrukciji 13 podesivoj po visini duž vođica, kao što je shematski prikazano dvostrukom strelicom F2na slikama 2 do 5, da bi se grupa 10 za izbacivanje prilagodila dimenzijama kotura 11, koje na ravni 12 za istovar moraju presresti gornji valjci 21, 22. [0028] The upper rollers 21, 22 are placed on the upper construction 13 adjustable in height along the guides, as shown schematically by the double arrow F2 in Figures 2 to 5, in order to adapt the ejection group 10 to the dimensions of the reels 11, which must be intercepted by the upper rollers 21, 22 on the unloading plane 12.

[0029] U grupi 10 za izbacivanje prema pronalasku, ugaona brzina prvog gornjeg ulaznog valjka 21 je veća od ugaone brzine gornjeg valjka 22 za rukovanje koji se nalazi nizvodno. [0029] In the ejection group 10 according to the invention, the angular velocity of the first upper input roller 21 is greater than the angular velocity of the upper handling roller 22 located downstream.

[0030] Ovo obezbeđuje progresivno smanjenje brzine kotura 11 koji prolazi kroz ravan 12 za istovar. [0030] This provides a progressive reduction in the speed of the roller 11 passing through the unloading plane 12.

[0031] Prema poželjnom tehničkom rešenju pronalaska, u prvom paru valjaka 123 za rukovanje, ugaona brzina gornjeg valjka 22 za rukovanje je veća od ugaone brzine donjeg valjka 23 za rukovanje. [0031] According to a preferred technical solution of the invention, in the first pair of handling rollers 123, the angular speed of the upper handling roller 22 is greater than the angular speed of the lower handling roller 23.

[0032] Sličan raspored je usvojen u paru ulaznih valjaka 114, ako ih ima, u kojima je ugaona brzina prvog gornjeg ulaznog valjka 21 veća od ugaone brzine daljeg donjeg ulaznog valjka 24. [0032] A similar arrangement is adopted in the pair of input rollers 114, if any, in which the angular velocity of the first upper input roller 21 is greater than the angular velocity of the further lower input roller 24.

[0033] U grupi 10, 10’ za izbacivanje prema pronalasku, gornji i donji valjci su motorizovani nezavisno jedan od drugog. [0033] In the ejection group 10, 10' according to the invention, the upper and lower rollers are motorized independently of each other.

[0034] Poželjno, postoji samo jedan gornji motor 14 povezan sa gornjim valjcima i samo jedan donji motor 17 povezan sa donjim valjcima. [0034] Preferably, there is only one upper motor 14 connected to the upper rollers and only one lower motor 17 connected to the lower rollers.

[0035] Odnos među remenicama dovodi do razlike u brzini između gornjih valjaka, što je u ovom slučaju fiksna vrednost. [0035] The ratio between the pulleys leads to the difference in speed between the upper rollers, which in this case is a fixed value.

[0036] Alternativno, prema tehničkom rešenju koje nije prikazano, ako se oba motora kontrolišu preko invertera, razlike u brzini između valjaka se mogu kontrolisati po želji. [0036] Alternatively, according to a technical solution not shown, if both motors are controlled via an inverter, the speed differences between the rollers can be controlled as desired.

[0037] Ako bi se svaki valjak kontrolisao sopstvenim motorom kojim upravlja inverter, postigla bi se maksimalna fleksibilnost u podešavanju recipročnih brzina. [0037] If each roller were to be controlled by its own motor controlled by an inverter, maximum flexibility in setting reciprocal speeds would be achieved.

[0038] Tokom rada grupe 10 za izbacivanje, prema pronalasku, kotur 11 koji izlazi iz zone namotavanja premotača nastavlja da se kotrlja po prvom delu 12’ ravni 12 za istovar dok ga ne presretne prvi gornji valjak 21, koji se okreće brzinom koja je u suštini jednaka ili malo niža od brzine ulaznog kotura 11 i usporava ga za prvu vrednost. [0038] During the operation of the ejection group 10, according to the invention, the reel 11 exiting the winding zone of the rewinder continues to roll on the first part 12' of the unloading plane 12 until it is intercepted by the first upper roller 21, which rotates at a speed that is essentially equal to or slightly lower than the speed of the input reel 11 and slows it down by a first value.

[0039] Kotur 11 zatim nastavlja prema prvom paru valjaka 123 za rukovanje, i kada ga presretnu, nastavlja da se rotira za unapred određeni broj obrtaja između gornjeg valjka 22 i donjeg valjka 23. [0039] The spool 11 then continues towards the first pair of handling rollers 123, and when intercepted, continues to rotate for a predetermined number of revolutions between the upper roller 22 and the lower roller 23.

[0040] Kada je i drugi donji ulazni valjak 24 prisutan u grupi 10’ za izbacivanje, kotur 11 prvo presreće par ulaznih valjaka 114 pa on nastavlja da se okreće za unapred određeni broj obrtaja između gornjeg ulaznog valjka 21 i donjeg ulaznog valjka 24, a zatim nastavlja prema paru valjaka 123 za rukovanje i zatim nizvodno duž dela 12” ravni 12 za istovar. [0040] When the second lower input roller 24 is present in the group 10' for ejection, the reel 11 first intercepts a pair of input rollers 114 and it continues to rotate for a predetermined number of revolutions between the upper input roller 21 and the lower input roller 24, and then continues towards the pair of rollers 123 for handling and then downstream along part 12" of the plane 12 for unloading.

[0041] Broj rotacija koje kotur 11 pravi na jednom paru valjaka 123, a moguće i na prethodnom paru 114 ukoliko postoji, zavisi od razlike u brzini između odgovarajućih gornjih valjaka 21, 22 i donjih valjaka 23, 24. [0041] The number of rotations that the reel 11 makes on one pair of rollers 123, and possibly on the previous pair 114 if it exists, depends on the difference in speed between the corresponding upper rollers 21, 22 and lower rollers 23, 24.

[0042] Što je veća razlika između brzina gornjeg valjka 21, 22 u odnosu na donji valjak 23, 24 svakog para valjaka 114, 123, manji će biti obrtaji koje kotur 11 pravi između njih. [0042] The greater the difference between the speeds of the upper roller 21, 22 in relation to the lower roller 23, 24 of each pair of rollers 114, 123, the smaller will be the revolutions that the reel 11 makes between them.

[0043] Razlika u brzini između gornjeg valjka 21, 22 u odnosu na donji valjak 23, 24 svakog para valjaka 114, 123, obezbeđuje da se kotur 11 rotira i translatira u isto vreme, dok nastavlja nizvodno u odnosu na par valjaka 114, 123 sa smanjenom linearnom brzinom u odnosu na linearnu brzinu koju je imao uzvodno od istog para valjaka 114, 123. [0043] The difference in speed between the upper roller 21, 22 in relation to the lower roller 23, 24 of each pair of rollers 114, 123 ensures that the reel 11 rotates and translates at the same time, while continuing downstream in relation to the pair of rollers 114, 123 with a reduced linear speed compared to the linear speed it had upstream of the same pair of rollers 114, 123.

[0044] Poželjno, prvi gornji ulazni valjak ima ugaonu brzinu koja se može podesiti na vrednost jednaku 10%-80% brzine uzvodnog premotača. [0044] Preferably, the first upper input roller has an angular velocity that can be set to a value equal to 10%-80% of the velocity of the upstream winder.

[0045] Ugaona brzina gornjeg valjka 22 za rukovanje para valjaka 123 za rukovanje može se podesiti na vrednost jednaku 30%-80% brzine prvog gornjeg ulaznog valjka 21 [0045] The angular speed of the upper handling roller 22 of the pair of handling rollers 123 can be set to a value equal to 30%-80% of the speed of the first upper input roller 21

[0046] Odnos ugaone brzine između prvog gornjeg ulaznog valjka 21 i gornjeg valjka 22 za rukovanje para valjaka 123 je oko 1,6, odnosno, gornji valjak 22 za rukovanje para valjaka 123 za rukovanje ima ugaonu brzinu jednaku 63% brzine prvog gornjeg ulaznog valjka 21. [0046] The angular speed ratio between the first upper input roller 21 and the upper roller 22 for handling the pair of rollers 123 is about 1.6, that is, the upper roller 22 for handling the pair of rollers 123 for handling has an angular speed equal to 63% of the speed of the first upper input roller 21.

[0047] Štaviše, posedovanjem dva nezavisna motora 14, 17 za pomeranje gornjih i donjih valjaka, moguće je podesiti razliku ugaone brzine između gornjeg valjka 22 za rukovanje i odgovarajućeg donjeg valjka 23 za rukovanje, pri čemu donji valjak 23 za rukovanje ima ugaonu brzinu jednaku 5%-50% brzine gornjeg valjka 22 za rukovanje. [0047] Furthermore, by having two independent motors 14, 17 for moving the upper and lower rollers, it is possible to adjust the angular velocity difference between the upper handling roller 22 and the corresponding lower handling roller 23, whereby the lower handling roller 23 has an angular velocity equal to 5%-50% of the speed of the upper handling roller 22.

[0048] Kada je par ulaznih valjaka 114 takođe prisutan, dalji donji ulazni valjak 24, ako je motorizovan, ima ugaonu brzinu koja je između iste brzine kao i kod gornjeg ulaznog valjka 21 i 50% njegove brzine. [0048] When a pair of input rollers 114 is also present, the further lower input roller 24, if motorized, has an angular velocity that is between the same speed as the upper input roller 21 and 50% of its speed.

[0049] Tako, na primer, prema poželjnom tehničkom rešenju, mogući približni, neograničavajući profil brzine može biti sledeći: [0049] Thus, for example, according to a preferred technical solution, a possible approximate, non-limiting speed profile can be as follows:

Premotač = 700 m/min Rewinder = 700 m/min

Prvi gornji ulazni valjak 21 = 500 m/min First upper input roller 21 = 500 m/min

Gornji valjak 22 za rukovanje = 325 m/min Upper roller 22 for handling = 325 m/min

Donji valjak 23 za rukovanje = 150 m/min Lower roller 23 for handling = 150 m/min

Dodatni donji ulazni valjak 24 = 300 m/min. Additional lower input roller 24 = 300 m/min.

[0050] Navedene brzine, koje se smatraju samo indikativnim, mogu se razlikovati u zavisnosti od vrste proizvoda. [0050] The indicated speeds, which are considered indicative only, may differ depending on the type of product.

[0051] Postupak za izbacivanje kotura iz mašine za premotavanje uključuje sledeće korake: - prihvat kotura 11 koji se kotrlja po ravni 12 za istovar prema prvom gornjem ulaznom valjku 21, stavljenom u rotaciju, [0051] The procedure for ejecting the rolls from the rewinding machine includes the following steps: - the roll holder 11 which rolls on the plane 12 for unloading towards the first upper input roller 21, put into rotation,

- prenošenje kotura 11 nizvodno od prvog gornjeg ulaznog valjka 21, - conveying the rollers 11 downstream of the first upper input roller 21,

- prihvat kotura 11 između gornjih valjaka 22 za rukovanje i donjih valjaka 23 za rukovanje para motorizovanih valjaka 123 za rukovanje, u kojima gornji valjak 22 za rukovanje ima ugaonu brzinu manju od prvog gornjeg ulaznog valjka 21, - receiving the rolls 11 between the upper rollers 22 for handling and the lower rollers 23 for handling a pair of motorized rollers 123 for handling, in which the upper roller 22 for handling has an angular velocity lower than the first upper input roller 21,

- - prenošenje kotura 11 koji se kotrlja po ravni 12 za istovar prema izlazu. - - conveying the roller 11 that rolls on the plane 12 for unloading towards the exit.

[0052] Prema poželjnom tehničkom rešenju pronalaska, odgovarajući odnos ugaonih brzina valjaka para valjaka 123 za rukovanje je podešen tako da je ugaona brzina gornjeg valjka 22 za rukovanje veća od ugaone brzine donjeg valjka 23 za rukovanje. [0052] According to a preferred technical solution of the invention, the corresponding ratio of the angular speeds of the rollers of the pair of handling rollers 123 is set so that the angular speed of the upper handling roller 22 is greater than the angular speed of the lower handling roller 23.

[0053] Prema posebnom tehničkom rešenju postupka, u prisustvu para ulaznih valjaka 114, koji se nalaze uzvodno od para valjaka 123 za rukovanje i koji sadrže gornji ulazni valjak 21 i još jedan donji ulazni valjak 24, kotur 11 koji izlazi iz para ulaznih valjaka 114 se prihvata između gornjih valjaka 22 i donjih valjaka 23 para valjaka 123 za rukovanje. [0053] According to a special technical solution of the procedure, in the presence of a pair of input rollers 114, which are located upstream of a pair of rollers 123 for handling and which contain an upper input roller 21 and another lower input roller 24, the roll 11 that comes out of a pair of input rollers 114 is accepted between the upper rollers 22 and the lower rollers 23 of a pair of rollers 123 for handling.

[0054] Gornji ulazni valjak 21 para ulaznih valjaka 114 ima ugaonu brzinu veću od gornjeg valjka 22 za rukovanje para valjaka 123 za rukovanje. [0054] The upper input roller 21 of the pair of input rollers 114 has an angular velocity greater than the upper handling roller 22 of the pair of handling rollers 123.

[0055] Grupa za izbacivanje kotura i odgovarajući postupak izbacivanja koji su predmet zaštite predmetnog pronalaska imaju prednost u tome što ne oštećuju koturove koji dolaze iz mašine za premotavanje velikom brzinom. Povoljno, prvi kontakt sa koturom koji ulazi velikom brzinom ostvaruje se tako što se izaziva prvo delimično usporavanje da bi se izbeglo stvaranje nabora. [0055] The reel ejection group and the corresponding ejection process which are the subject of the present invention have the advantage that they do not damage the reels coming from the high speed rewinding machine. Advantageously, the first contact with the high-speed incoming reel is made by causing a first partial deceleration to avoid the formation of folds.

[0056] Par valjaka za rukovanje pogodno vrši povećan pritisak na kotur koji izlazi iz grupe za izbacivanje, što može biti posebno korisno ako je kraj zalepljen unutar premotača. [0056] A pair of handling rollers conveniently exerts increased pressure on the spool exiting the ejection group, which can be particularly useful if the end is stuck inside the winder.

[0057] Pored toga, par valjaka za rukovanje pogodno ispravlja koturove koji prolaze na ravni 12 za istovar. [0057] In addition, a pair of handling rollers conveniently straightens the rolls passing on the unloading plane 12.

[0058] Grupa za izbacivanje kotura u mašini za premotavanje i tako koncipiran odgovarajući postupak izbacivanja podložni su brojnim modifikacijama i varijacijama, a sve spadaju u obim priloženih patentnih zahteva; štaviše, svi detalji su zamenljivi tehnički ekvivalentnim elementima. U praksi, korišćeni materijali, kao i njihove dimenzije, mogu biti bilo koje vrste prema tehničkim zahtevima. [0058] The reel ejection group in the rewinding machine and the corresponding ejection procedure thus conceived are subject to numerous modifications and variations, all falling within the scope of the appended patent claims; moreover, all details are interchangeable with technically equivalent elements. In practice, the materials used, as well as their dimensions, can be of any type according to technical requirements.

Claims

Patent claims

1. A reel ejection group in a rewinding machine comprising a flat (12) for unloading the wound reels (11) and means for retarding the reels connected to the flat (12) for unloading, said unit comprising a first motorized upper input roller (21) for intercepting the reels (11) arriving at the flat (12) for unloading, characterized in that it contains a pair of motorized handling rollers (123) which located downstream of the upper input roller (21) and comprising an upper handling roller (22) and a lower handling roller (23), wherein the lower handling roller (23) is integrated into the unloading plane (12) and where the first upper input roller (21) and the upper handling roller (22) are arranged on the upper structure (13), adjustable in height, the angular velocity of the first upper input roller being (21) greater than the angular velocity of the upper one the downstream handling roller (22).

2. The ejection group according to claim 1, characterized in that in the pair of handling rollers (123), the angular velocity of the upper handling roller (22) is greater than the angular velocity of the lower handling roller (23).

3. An ejection group according to claim 1 or 2, characterized in that the first upper input roller (21) cooperates with the unloading plane (12) to intercept the rolls (11) arriving at the unloading plane (12).

4. The ejection group according to patent claim 1 or 2, characterized by the fact that it contains an additional lower input roller (24), placed upstream of the pair of rollers (123) for handling and integrated in the plane (12) for unloading, thus forming with the first upper input roller (21) a pair of input rollers (114), where the angular velocity of the first upper input roller (21) is greater than the angular velocity of the additional lower input roller (24).

5. The ejection group according to claim 4, characterized in that said additional lower input roller (24) is idle or frictional.

6. The ejection group according to claim 4, characterized in that said additional lower input roller (24) is motorized and forms with the first motorized upper input roller (21) a first pair of motorized input rollers (114).

7. The ejection group according to claim 6, characterized in that it contains only two pairs of motorized rollers (123, 114).

8. An ejection group according to any of the preceding claims, characterized in that it contains one upper motor (14) and one lower motor (17).

9. The ejection group according to any of the patent claims 4-8, characterized in that the upper rollers (21, 22) are placed on the upper structure (13) adjustable in height and in that the lower rollers (23, 24) have a fixed position below the plane (12) for unloading and are placed with their upper generatrix tangentially on the first inclined parts (12') of the plane (12) for unloading.

10. Procedure for ejecting the reel, which includes the steps:

- roller holder (11) that rolls on a plane (12) for unloading towards the first motorized upper input roller (21),

- conveying the rollers (11) downstream from the first upper input roller (21),

- receiving the rollers (11) between the upper roller (22) for handling and the lower roller (23) for handling a pair of motorized rollers (123) for handling, in which the upper roller (22) for handling has an angular velocity lower than the first upper input roller (21),

- - transmission of rollers (11) that roll on the plane (12) for unloading towards the exit.

11. The ejection method according to patent claim 10, characterized in that the corresponding ratio of the angular speeds of the rollers is set so that in the pair of rollers (123) for handling, the angular speed of the upper roller (22) for handling is greater than the angular speed of the lower roller (23) for handling.

12. The ejection method according to patent claims 10 or 11, characterized in that the reel (11) is accepted at the entrance to the plane (12) for unloading by means of a pair of input rollers (114) formed by the first upper input roller (21), motorized, and the additional lower input roller (24), in which the first upper input roller (21) has a higher angular velocity than the additional lower input roller (22).