CA2206572A1 - Device for changing a roll jacket - Google Patents

Abstract

The present invention relates to a device for changing a flexible roll jacket ofa roll, particularly a deflection adjustment roll. The device has a rolling stand with several parallel guide rods for loading a new roll jacket. A mechanism on the device can receive an old roll jacket while simultaneously supporting a new roll jacket on the guide rods. In this manner, a new roll jacket can be installed without having to first withdraw the device to remove the old roll jacket.

Description

1fli. lYY~ ~:a,y v~ I ~ Hl~ j .rJ ~J~.~11ilj~l'l ,~.~ ~. J
.. ' h~ ~ CA 02206~72 1997-0~-30 P15610.S03 DEVIOE ~OR CHANGING A ~OLL JACKET

CROSS-REFF.R~CP OF RELATED APPr Tc~TloNs The pres~ ~ c. '; - cl~ims pna~i'q urld~r 35 U.S.C. 119 to German Pa~t Applicd1ion 296 09 694.6, filed May 31, 1996, w~ich is CA~ 9jly lUCO~Gl.. tC~l by ~,f~,.ellce in its ~ ty.

BArRf~ou~ OF T~lF I~VENT~ON
1. F~eld oft~e T..~...n;....
The pre~ t L~ion ~elate~ ~ ~ device 1~ ch~n~P~ the ja~et of a roLL M~e p~rl;c~ rly, the p~esent ~tiOI~ relates to a device 1 ha~ can cha~ge a fl~Ylhl~ roll jacket of aroll (mpar~cular a ~PflP~tj~ adj~ ' ro~) ~fh aroD;~g standh~v;ng ~ubst~lly p~r~llGl guide rods fc~ Q*Ain~ a ~.ew roll jacket 2. ne.~ nofp~L~u~dT~r~ t;~n DPfl~ 1 rolls are used, ~ he press and .C---~
se~i~ of paper mal~g ~ , These rolls have a~Y ble roll jaclcet, ~ ally of r~inf~rcc~ poly~elbaue~ ~s~d against a cou~ oll by ~ )oll elP.~nPrlt.c S~ ul~ on a cen~al ~OE. Due to uear an ~e roll jaclce~, they ~LUSt b.e ~ nge~
at re~ular 1nterval~. However, i~ speed pre~s macbil~es, the ~olls are I1~e~ ted in '~troughs" to catc~ press w~, this makes it bo~ lt and ~ne u,~ ..,v~to change ~e roll jacket.
~ the prior ar~ a tra~on device i5 used to both reInove ~e roll jacket from ~
roll, and to replace it w~ a new roll jac~et The 1ractian device i9 ~1ier ~A w~ the roll ~L~I~,~On the old roll jacket is pulled ~om ~e roll onto the guidt; rods of the 28.~ 997 8:50 vsf r vsH f~B~ J L~.L1i,.)~ NR.~03 S.4 t ~ 4 CA 02206572 1997-05-30 P15610.S03 de~nce. Ihe ~ir~n device must then be ~ llPA I~Wa,y ~om ~e r~ll to ~e:~o:~ the old roll jacl~ e trac~on de~ricc before a new ~oll jacket is loaded onto lhe ~de rods. The ~ ", dev~ce i~ i~ witb ~e roll to ! ~-~,5~~ the new~oll jacbet ~ereto. Ullfo~ dtcly, the need ~ ~ 11y repos~on the ~hnr~
devicetoren~dc~gerolljac~ mec~ di.,creas~ o~v~;
costs due to down ~mes ofthe p~ess machi~es.

SUMMA~Y OF THE I NVI~NII(:)N
It i~ l~fu~ an object oftbe ~In~ on toprovide a de~ r ch~nei~ a roll ja,cket that is faster aIld more cost el~ e than the E~ior art.
The ~1 inventian ~ nes ~he above d~a~.bzcl~ by providing a m~.hsni~ which c~n remove an old ~oll jacket ~hile ~ilmlllA..~ ly ~uppollillg roll ja~t.
The present inventi~ r c~n~ a roll jaclcet i~cludes a m~sh~nicm t~at can lS ~ r~ Iy r~;~c, an old roll jacket while h~ a ne~ roll ja~ket loaded 021 guide rods nf a rolling stan~ Thus, 1~e old jacket ca~ be l~,~O . _d, a~d ~e new ja~
m~lh~ huul ha~gto ~ove ~e Gl~ g device. Since ~e ch~tl~ device is not w~a..ll ~om ~e paper l~)~1,.. ~Ç to r~place ~e old roll jacket wi1h ~he new roll jac:lcet, the averall re~lacement ~me is .~d~ced c~ ~ably, ..~ down ~ne of ~e paper machille~.
Accardingto a~ ho~in~ t of ~ep~t imren~on, a housinghas se~reral ~d~ ~ods on a ~uppo l nibe fo~ po.l.i--g a new roll jacket. The hn~in~
also has tvvo F~ t ~Uy ~ e ~l~l.lg rods d , 05 e d oul~ide the l~
radi~ of ~e ~de rods. When ~o.~ om a mll, tlle old roll jacket is sto~ed on dlese la~ral ca~Ty~ng r~ds un~ ~e new roll jac~ iS in~pllP~ on ~e mLI. The old rol1 28. I~I . 1997 8: 50 V5DT VSH f~B~ . f'J ~i~. L~ DEN I~R . 003 S. 5 J ;. 4 ~ CA 02206572 l997-05-30 P15610.S03 jacket is cut f~m the roll durmg th8 re,~ yrocess, and ~e end scc~ons ~us plo~ r~l are displaced vul~d vu the ca~nng rod~.
Accordil g to a fea~re ofthe ~1~.~ embo~1:n.~ ~g bolts, ~ f~1 to the carry~ng rods, J~J~oll the old roll jacket a9 it is ranoved ~om ~e roll. ~rhe carrying belt~ are ~ ~f,.~ly movable along ~e Cd~ rods t~ c~ry ~e old roll jac~et a~ it is drawn into the rh~ ~ devic8 1~l it ~eaches dle back of the rolling stand. The c~ rods and c~,~g bclts ~,.ide a stable a~d secure s~l for the old roll jacket u~l it can be ~e~.~d and d6~ cd ~llowing install~io~ ofthe new roll jaclce'L
Acco~Pi-~ to a~other fe~e of ~e pl~ em~o~im~t of the invention, vise gn~ vhich can gr~sp ~he old roll jacket, are movably affixed to ~e caII~nngrods. The vise gn~s ~e p~ att~ed to a slide on ea~ c~.~g rod soth~tthe vise grips can move i~om one e~d of ~he rolling ~lancl to ffle o~her. Thc slide ~a~s a tracdon cable wolmd onto a cable l1vinch, whicll can pull the vise ~ps and an ~ehp~d old roll jacke~c mto ~e rolling s~nd.
AccordiIIg to a s~ ure of ff~ of ~ r ~ y7~ he v~se ~p~
are ~lt~ch~ to ~he ~lide~ by snap hoob.
Accordi~ to a s~ll fi~er fea~ure oft~e ~r~lt;d ~nhOA;~u~ the ~acdon cable~ ~re each g~ided v~a a 'l~fl~iQn roll d'~Fcse~l at the rear end oftihe ca~g rods. ~is allaws ~he ~blo -vinchto be pc~ t avar~ety of loca~Ds, inr.l the base of the el~ device.
According to a~ nbo~ 1 of ~e prese~ O4 a d~ice forre~lacing aJacket of aroll is pr~,id~ A~ousingh~s apl~ of!~ t ~1 ~lly p~llel ~de rods which can ra~ve a ~e~ roll jacket A mechaDism, in ~e housiIIg, can rcec,;~.2~ an olt ~oll jacket whe~ ~he ne~r roll jacl~ is ~eld on the plurali~ of guide rod~.

28.MRI.1997 8:51 VSPT VSH ~T.PJ DR.L~I'IDE:N NR.003 S.6 CA 02206572 l997-05-30 P15610.S03 According to a fe~e of ~he abo~e en~bQ~ , the r~ .Ai.c.n inr.llt~c two ca~ying rod~q whic~ are ~b~t~ l;Ally p~ l to ~e l~luralit~ of guide rods. The two ~rillg ~d~ ,osed on both ~ides of ~e l~n1~9i~ outside a load radius of the pln~lity of guide rods.
5Acco~ to a f~ i~ture of above eml ~ F r~t~ the ~c~;~i.,~ ,. ~l\s~n ~ ~
;n~h~ a pluIalib of ~g belk; i l .r.l~A to ~he two ca~ymg rods. The plurality of ~,~",gbelts can su~rt~e oldroll jacket~n,d~ h ~he plu~lity of gu~de rod~.
Accordingto as~ er i~a~re ofthe ~ f -~t ~hepl~ of ca~yiDg bel~ are ~u.~ e along a ~ u~lin~ oll oftihe two car~nngrods.
0Acc~Ji.,g to a s~dll fi~ feature of the ~o~ P ~I two ~e grips are ~uo.~bly molmts-l on ~e t~o c~g rod~ . The ~wo vise ~rips can grasp ~e old roll jacket.
Accol~gto a still fi~r~er fiature of ~he ~.~lJG-1;... -t. two trac~oII cables have a first e~d cQnne~ted to a cable winch and a ~econd e~d C~ l~ng~.h~ he t~vo vise15~ps, ~ Thetv~o ~r~se ~ are ~A~ r11~3 to two slides, r~s~eclively~ Each ~lide is ~ ~u~ly rnn~mf~ arl ~he ~vo caa~nng rods, ~
Acco.di~g to a still fi~er ~ ofthe above ~- ..~,1;.. .~"~1 ~e two ~nse grips are attached to tihe two slides by two ~p hooks, le3~c~i~el~.
According to ~ s~ll fi~er feature of ~e c ~ho~ ..f .1 a ~enP,~ n roll gu~des 20~e two ~ac~on cables at a rear end of ~e housing.
Acc~rdingto ~ çmho~ ~1 oftbei~ io4~ere i~ provided a de~nce for r~placmg a jacket of a roll. A 1 o~ a plu~lity of ~UL~t ~ .~lly p~r~11e1 '~8 la~ally m ~e hou~ing for ~u~Lng a ne~v roll jacket. Firs~
and second c~g rods are ~'~'OQ~ e h~ out~ide of a 1O~1in~ radius of dle plurali~ of guide rod~. ~t least one ~ ~u.~l)~ o~ ~e first and Z8.1~I. 1997 8:51 V~I V~H h~I .t- J LJ~. LL~

PlS610.S03 secaDd ~g rods. The a~ least one support and the fir~t ~d second caIrying rod~
.ec~ , and S~l~pO~ old roll jacket ~v~ile lhe new roll jac~et is held on t~e guide rods. A c~n~ ico, movably n~o~ t~d on each oft~e first and ~econd c~g rods, can grab the old roll jacket. A pullmg ~ .rhA.~icn. puIls the Gon~ rc~ o.. device S ~ l into ~he bollsing.
Acc~ding to a fi:~ure of the in~ ~L;OI1, 1 he pulling m~i~ ;nr~ ~ ~ least one cable wi~h a fi~st end c~n~.r-~A to the CQI~nrC1;~ device a~d a second end crnn~ted to a cable winch Accordingto afi~e~ fe~ture ofthe hl~io,~, the cQ~ ~P~:O~ device in~
a slide u-u.~ly 1.~01~ ~t~ on each ofthe fir~t ~nd second c~g rods. A ~ri9e gnp is cn~ r~,t~Yl to tlle slider.
Accordingto a s~ll filrther fe~e of ~e invention, ~e ~ise g~ip ~s co....P~t~
to ~e slider by a snap hook Acco~i~g to a still filrther fean~e of ~he ~ .l;o~, the a~ least one ~up~oll is a,plU~iityof Ca~ g belts.
~ccu.~li~ to yet ano~e~ e ~ "~ ofthe ill~ti~ll, a "...lho-l for r.h.~l~g;~
a ja~t o~ a roll is p~ A device has a f~r~t ~u~ which can hold a new roll jacket and a second sb ~urc~ which can ~OI~g an old roll jacket. A new roll jacket is loaded onto the fir~t ~ ,. The device i~ ~li~ed ~~nth a roIl having old roll jacket. The old roll jacket is pulled from ~e roll OIItrO the ~econd ,~u ~tu~
I~e new roll jacket is pl~lced on ~c roll.
According to a ~ure oft~e above ~mho~ f~ he new roll is placed on the roll ;~ tely following the old roll jacke~ being pulled Ihm the roll, 28.1~RI.1997 8:52 V5' r V~H H~ K.~
CA 02206572 l997-05-30 P15610.S03 ~rr4~ill~to a fi~er feahlre ofthe aboYe emlJo~ he ~ pl~ced on ~the roll ~ u~ ~a~g to realigll ~e de~ice a~e~ the old roll jaclGet is pulled ~om the roll.
to a s~l fi~e~ feature of ~e ~on, the old roll jacket is pulled w~ile the new roll jacket is held by the first ~l~u~ e.
~ccordingto as~ll f~er featuue of ~e Lu~a4 betweellpull~g~e oldroll ja~ and ~ the new roll jacket, the old rollJacket and tbe new roll ja~cet ~re ~;mllt~ o~ held by che dev~ce.
~r.e~ g to a ~ill fi~b.er fea~ ofthe i~l~,~io~ he old ~oll jacke~ is cut from the roll when pulled oi~the roll.
Ac~gto a s~ll fi~er fea~re ofthe ~.w~ , the d~ce i..~ f'A a ~l~d s~ vhich can g~p lhe old roll jacke~ The me~hod also it~h~ s connP~ing ~he d s~- clu,~ to the old roll jacket after the d~ce is q~igr ~ bul: befo~c the old roll J~cket is pulled.
BRTF.F ~R~CRIP~ON OF ~P. nRA~c;~
The pres~t ~ liuu is ~her ~k~ the ~ esc ;~
follows, wi~ ~f~ nc-; to the noted ~aw~lg fig~ A~~ t~e ~eî.,..e,d c "ho~1i".rl.~ of ~e pIes~t ~nven~on, and wL~.n:
Fig. 1 ~a~h ---il;csidev~ewof~e~r-,f~ -b~ -P l of ~hei~ve~ltion.
Fig. 2 ~s an enls~ged vie~v of the elL ~ x su~po~t,d on each of the c~g rodsofthe~ mvention.
Fig 3 is a s~h ~ ont view of a ~f~r~ed e,vbo~ of ~e inventian DET~-T.P~ nR.~R~P rION

Z8. I~I . 1997 8: 5Z V~iDT VSH ~RE~T . PJ v~. Lli~ p . 003 S. 9 .- ~' , CA 02206572 l997-05-30 P15610,S03 ~ E no~r ~o Figs. 1 and 3, thc ~h~in~ ice according to ~e inven~on is sho~ ly at 100. A rack~sha~ed ho~lc;T~P 1 (i.e., the rolling stand) has fol~r hn.;"".l~l s~s2. Fa~y~osesofl~r~A&e~thesectionofho~ g 1~ ~tthe mou~h is termed the ~o~t end, and the ol.l.G~;t~ d of hou~ing 1 is tenned the re~
S end. At the rear end, h--- ;,.. l~l stru~s 2 co.~ ,1 to eacll other by ~cal ~ts 3 and h~ ""~1 ~lateral~uh4. On~ele~and r~gkt~des ofhousing1,~ rutsS
r co~ e ~ont e~d of a h~ n~t~ ri~ nAl strut 2 to ~e ~ear end of d;~.G-~Ih~.;,...,1-ll~n~t~ ...ql~2. Lat~l.c.~ es22~ to~ebottom a~d top of IQr~lU~ q1 StrUtS 2 to provide ~di1;~nq~ ;1;7~0~ ~only one l~t~
11a~ 22 LS ~how~ in ~e figu~
IIlside ~e area ~'-se~ by s~uts 2 ~rou~h 5, hr~ t~l guide rods 6 and k--.;" .,~ c~grods 8 extendsub~ 'dally~ldto l~ngih~ n~ 2. Guide rods 6,~hichsui)p~.l ane~rolljac~7, are ~P.I...~P,1~,~ g ,~ .tl A byradial~ L~
32 on a ~be 30. Canying rods 8 are ~l &l~oseA outside a load radius of guide rods 6 so as not to i~t~,.f~, ~ wi~ new roll j~t 7. r Q~(d1~ldin~1 struts 2 ~ ~ide ~s,~ jL;~n~1 ~uy~u~l for ca~rying r~ds 8 ~ ~li9g~T 9l ~ 9.
~ach of ~ng rods 8 ~as a 1rack gu~de on i~ ~ le to ~ he ends of ~jill~ belts 10. These tra~k gudes guide ca~rying bel~ 10 laterally along ,rods8.
R~f~inp~ n~ ~o to ~ig. ~ ~e G1~f -~ whic~ eu~ ~ ~c~l each of ~g rods 8 to old roll jacket 18 are shown, each ofthese ~ ."~.~,t~ sl,ose.d on each ~ide of h.)n~;ne 1. A glide l 1 iS ~..o~ t~ to ~ top of each ca~ rod 8, and is mo~r~ble along caIIying rod 8. Each slide 11 bas a proJe,~l~on 12 wi~h two eyelets 13. The r~n~.~ eyelet 13 c~ r~ ~ bo a vise gdp 141 pl~ a snap hook 15. The 2s other eyelet 13 co ~ "~ l ~n cable 16. Trac~o~ cable 16 is wolmd about a .M~I.1997 8- 53 VSPT vSH RBT.PJ ~R.L~N~EN NR.003 S.10 5~ CA 02206572 l997-05-30 ,, ~ .

P15610.S03 cable winch 17 such ~ reh~t;nn of cable 16 by cable ~nnch 17 pSUlls slide 11 ~nto housL~g1. ~ $~ v~ guudssarep~n~dodto~deb~orsc~le16 along c~g rod 8. A defl~ti~n roll 21, provided at ~e re~ d of hnl~g~
di~rerts cable 16 such ~t c~ble wi~sch 17 ~n bc ~i~Fo.5ed be,l-~.d1h eh~ng~ de~ice 100.
The proce.lS~e f~ T~p~ anS old roll jack~ 18 wi~ a ne~v roll ja~k~t 7 using ~he ~lese~t iu~Lio~ i~ as follo~s. A ne~v roll j~et 7 is mitially loaded O~l ~ide r~ 6 of h. ~ p 1. Ho~i~g 1 is the~ po~iL~ rA adjace~lt ~e paper ~ ]~ having the old roll jacket 18 to be ch~-~ge~l the guide rods 6 are ~li~e~ w~th the 10~ "Vl~ ~ce of face plate 20 of ~he roll, wi~ a space thc~l~.~e~. For ~Y~ le~
a c~ne lifks hnl l~in~ 1 at ~ lla~ ee, 22 tD ~ l it wieh ~e pa~ n~nrl.;.~e ~ e roll is not ~ d by ~e paper ma~ , h~ d~ to a s.lp~ l pin (not ) of ~e dr~ve e~d of'dle roll to a~ re ade~e ~lp~ l and ~e roll i~, detached ~om the paper ~h~E ",~r.l~ r,~
15Wi~the rollpropc~ sr~o~, auserc~nne~ ~nse ~s, 1~ to oldrollja~,l~et 18. W~ding c~ble ~ch 17 then reha~ cablc 16, pulling old roll jacket mto hn~ m~ 1. As old ~ollJac~ot 18 is pulled into h~l~ing 1, it i~ cut at ~b top side by a saw 19 (~ef~d~ly a saber saw) all ~ vay ~ fi~e plate 20.
~ it i~ pulled into h~ g 1, old rolliacket 18 is recc;Yed by ffle carr~nng be~ts 10; ~he c~ end~ of oldrolljac~ 18 are disp~ o~l~.. Lrdv~a~e ~rods8. C;~,~ belts 10 su~port and gl~ide old roll jacket 18 along c~ rods 8 ~ward ~e rear end of h~u~ing 1 un~l c~..l,lately ~here~n.
Followi~g ~ .al of olt roll jacket 18, ~e ~e~v roll jacket 7 ia ~ pulled ~om 1. ~ ;ng 1 on~;o the roll ei~er manually (i.e~ ed and mo~ed by hu~nan e~iort) 25or bg a d~ice (~ot sho~vn) having grips, cable, ~d a ~ch simil~r to ele-~~f ~t~ 14, 28 M~I.1997 8:54 VSPT VSH RBT.PJ DR.LINDEN NR.003 S.ll ~ CA 02206572 1997-05-30 P15610.S03 16, and 17; and other .~ f~r h~r~ ofthe roll ~ould be readily a~ G~ e of ~d;~ lL and are ~ l to ~llwil~e scope of ~he presa~t inventi~n.
Smce old roll jacl~et 18 is sto~ed below, ~ew roll jacket 7 ~ ed wi hou ha~ng to reposition ch~n~ng device 100. Only a~ ncw roll jacket 7 is in place i~c~ngdevice 100 ~C~D. d ~om~ep~ermachi~ u~nthe oldrolljacket 18 i~ .. iLL4~ om h- llci~ 1 and L.,~
~he de~ice accu~ to the i~tio~ ' rapid ~d huub~ fiee faro~ * sincearo~ Dg ~I.A.~ device 100, ~he dowII 'dmes of ~e paper m~r~bin~, a~d associated co~, are ,.. ;.~;",;~yA
It i~ ~oted li~ ~e ~g~g examples have been ~o~ d merely for the 05G of G~l*n~h~n a~d are in no way to be co~ued as 1i...;~ g of 1he ~s~,l in~en'don. While the ~Lion has bee~ sribed ~rith r~fP~ to a ~ ,f~
enn1 of 1;,...,.~1 it is ~ode st~od ~ ~e words w~ch have been used herein a~e words of ~.. p~i- nand;l~ an~ord~ofl;--~d;~ n Ch~t~maybemade, within the ~ .. of t~e a~ fi~ cl~ stated and a~ q ~-- ~Ae~l, wilh~ de~P- ~ g l~om~ cape and spirit of ~he ~n~erl~on m its pcpe~. ~lt~ong1~
~Luu has bee~ s~hed he~ with l~f~.~ce to par~cul~ mea~s, motf,~ olQ
and embo~ t~, the ~u~wllioll ~s not ;nlf nd~1 ~ be limited to t~e pardculars 20d;~lQs~ herem~ ra~, the inv~'don e~An~l~ to all fir~ ly eqUlV'df~ ~v~1,w~, ~nethods and uses, such as are wi~i~ the scope ofthe ~ ~7 claims.

Claims (18)

1. A device for replacing a jacket of a roll, comprising:
a housing having a plurality of substantially parallel guide rods for receiving a new roll jacket, and a mechanism, associated with said housing which receives an old roll jacket when said new roll jacket is held on said plurality of guide rods.

2. The device of claim 1, wherein said mechanism includes two carrying rods which are substantially parallel to said plurality of guide rods, said two carrying rods being disposed on both sides of said housing outside a load radius of said plurality of guide rods.

3. The device of claim 2, wherein said mechanism includes a plurality of carrying belts attached to said two carrying rods, said plurality of carrying belts being effective to support said old roll jacket underneath said plurality of guide rods.

4. The device of claim 3, plurality of carrying belts are movable along a longitudinal direction of said two carrying rods.

5. The device of claim 2, further comprising two vise grips movably mounted on said two carrying rods, respectively, said two vise grips being effective to grasp said old roll jacket.

6. The device of claim 5, further comprising two traction cables having a first end connected to a cable winch and a second end connected to said two vise grips, respectively, wherein said two vise grips are attached on two slides, respectively, each of said two slides being movably mounted on said two carrying rods, respectively.

7. The device of claim 6, wherein said two vise grips are attached to said two slides by two snap hooks, respectively.

8. The device of claim 6, further comprising a deflection roll which guides said two traction cables at a rear end of said housing.

9. The device of claim 1, wherein said roll comprises a deflection adjustment roll.

10. A device for replacing a jacket of a roll, comprising:
a housing having a plurality of substantially parallel guide rods extending laterally in said housing for supporting a new roll jacket;
first and second carrying rods disposed in said housing outside of a loading radius of said plurality of guide rods;
at least one support, movably mounted on said first and second carrying rods, said at least one support and said first and second carrying rods being effective to receive and support an old roll jacket while said new roll jacket is held on said guide rods;
a connection device, on each of said first and second carrying rods, being effective to grab said old roll jacket, and a mechanism which pulls said connection device rearward to said housing.

11. The device of claim 10, wherein said mechanism includes at least one cable having a first end connected to said connection device and a second end connected to a cable winch.

12. The device of claim 10, wherein said connection device includes a slide movably mounted on each of said first and second carrying rods, and a vise grip connected to said slide.

13. The device of claim 12, wherein said vise grip is connected to said slider by a snap hook.

14. The device of claim 10, wherein said at least one support comprises a plurality of carrying belts.

15. A method for changing a jacket on a roll having a housing including a first structure which can hold a new roll jacket and second structure which can support an old roll jacket, comprising:
loading a new roll jacket onto said first structure;
aligning said device with a roll having an old roll jacket;
pulling said old roll jacket said roll onto said second structure; and placing said new roll jacket on said roll, wherein said placing directly follows said pulling.

16. The method of claim 15, wherein said placing follows said pulling without requiring any realignment of said device.

17. The method of claim 15, wherein said pulling occurs while said new roll jacket is held by said first structure.

18. The method of claim 15, wherein between said pulling and placing, said old roll jacket and said new roll jacket are simultaneously held by said device.19. The method of claim 15, further comprising cutting said old roll jacket from said roll during said pulling.
20. The method of claim 15, said device including a third structure which can grip said old roll jacket, said method further comprising connecting, between said aligning and pulling, said third structure to said old roll jacket.