CA2218305A1 - Web alignment system and method - Google Patents
Web alignment system and method Download PDFInfo
- Publication number
- CA2218305A1 CA2218305A1 CA002218305A CA2218305A CA2218305A1 CA 2218305 A1 CA2218305 A1 CA 2218305A1 CA 002218305 A CA002218305 A CA 002218305A CA 2218305 A CA2218305 A CA 2218305A CA 2218305 A1 CA2218305 A1 CA 2218305A1
- Authority
- CA
- Canada
- Prior art keywords
- web
- roll
- medium
- liner
- alignment system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
- B65H23/0326—Controlling transverse register of web by moving the unwinding device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H39/00—Associating, collating, or gathering articles or webs
- B65H39/16—Associating two or more webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/176—Cardboard
- B65H2701/1762—Corrugated
Landscapes
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Replacement Of Web Rolls (AREA)
Abstract
A web alignment system is provided which consists of at least one liner web roll affixed to a first roll stand and at least one medium web roll affixed to a second roll stand. The web alignment system is characterized by further including control means for pre-positioning the liner and medium web rolls prior to the commencement of unwinding of the liner web roll and the medium web roll.
Description
CA 022l8305 l997- lO- lO
-WEB ALIGNMENT :~S I t~1 AND METHOD
Gideon Shahaf, Amit Shahaf and ~fe~.; Weiler FIELD OF THE INVENTION
The present invention relat~s to aLItG~ wn~ol sy~k,.,s gencrally 5 and to web guiding equipment in particular.
BACKGROUND OF THE INVENTION
Generally, ~l~at~.ial~ which aro guided in web forrn ten~ to be thin paper, filrn or fabric. Often, the ",dl~.ial ~anders from its correct ali~lll,~ent on the web due to various factors, such as ..laterial irregulari~y, web speed or faulty 10 ~nac~ ry.
Web guiding systems are cc,--lll~onl~ used in pr~ tion yrlJ~s3e~ to collec~ly guide and tension the ~"dt~lial on the web. G._.lerally, all auk,...at~cl control systems utilize ~ tors to correct web travel and sc..sGra to detoct the actual web ~o~'Aiol~. The actual web position is continuously compared with a 15 pre d¢h.,.l;ned value by a co,ltl~ller which ensures that the appro~.,idtè
cci,culiuns are made.
Various types of actuator~ are known, the type of actuator used ~epcn~ing on th~ a~pli~ ie" and the type of fabric. Actuato~ inelude pivotin~
frames, sLcc~ and ~ V~ti.l~ rollers and tumin~ bars for example. When guided 20 by pivoti~ r,_.l.e~, the web is subject to movement on both Its lon~itutinal and transverse axes. ri.~otl"y thmes are conl",onl~ used where spaoe i at a premium. Steerin~ roller actu~tors are loc~t~ - I in the infeed area of the .IOait;vl~ g roller and slmultaneou~ly correct the ~eb in t~o dll~Aivn~. Pivotin~
rollers are mostly used on continuously fed mabri~l webs, such as tran~port belts, 25 where ~uidin~ accuracy toleranoe of one cc"~,),ater Is suffcient. Tune bors are uaed where it is ~ a~ to change the web direcbon by ~0 da~ c~ ~nd simullanoously make cGr~e~tion6~
1 04~-CA
In the prQ~ ction of corru3ated board webs, the ".isal;~"nenl of the liner and medium roll ed~es "cc~r~ the removal of overlapping edges and thus can lead to significant W~8~ e and c~cr,Ee.
The known prior art web guiding systems require extra ~~chine~y and s ~p~ t,or, and are not ~uibd to optimal placing of the webs in corrugated boards. Fu.UI_.l-.or-~, exl~til,~ prior art eystems are relatiYely 810w and ~r._r~lly manually adjusted.
-WEB ALIGNMENT :~S I t~1 AND METHOD
Gideon Shahaf, Amit Shahaf and ~fe~.; Weiler FIELD OF THE INVENTION
The present invention relat~s to aLItG~ wn~ol sy~k,.,s gencrally 5 and to web guiding equipment in particular.
BACKGROUND OF THE INVENTION
Generally, ~l~at~.ial~ which aro guided in web forrn ten~ to be thin paper, filrn or fabric. Often, the ",dl~.ial ~anders from its correct ali~lll,~ent on the web due to various factors, such as ..laterial irregulari~y, web speed or faulty 10 ~nac~ ry.
Web guiding systems are cc,--lll~onl~ used in pr~ tion yrlJ~s3e~ to collec~ly guide and tension the ~"dt~lial on the web. G._.lerally, all auk,...at~cl control systems utilize ~ tors to correct web travel and sc..sGra to detoct the actual web ~o~'Aiol~. The actual web position is continuously compared with a 15 pre d¢h.,.l;ned value by a co,ltl~ller which ensures that the appro~.,idtè
cci,culiuns are made.
Various types of actuator~ are known, the type of actuator used ~epcn~ing on th~ a~pli~ ie" and the type of fabric. Actuato~ inelude pivotin~
frames, sLcc~ and ~ V~ti.l~ rollers and tumin~ bars for example. When guided 20 by pivoti~ r,_.l.e~, the web is subject to movement on both Its lon~itutinal and transverse axes. ri.~otl"y thmes are conl",onl~ used where spaoe i at a premium. Steerin~ roller actu~tors are loc~t~ - I in the infeed area of the .IOait;vl~ g roller and slmultaneou~ly correct the ~eb in t~o dll~Aivn~. Pivotin~
rollers are mostly used on continuously fed mabri~l webs, such as tran~port belts, 25 where ~uidin~ accuracy toleranoe of one cc"~,),ater Is suffcient. Tune bors are uaed where it is ~ a~ to change the web direcbon by ~0 da~ c~ ~nd simullanoously make cGr~e~tion6~
1 04~-CA
In the prQ~ ction of corru3ated board webs, the ".isal;~"nenl of the liner and medium roll ed~es "cc~r~ the removal of overlapping edges and thus can lead to significant W~8~ e and c~cr,Ee.
The known prior art web guiding systems require extra ~~chine~y and s ~p~ t,or, and are not ~uibd to optimal placing of the webs in corrugated boards. Fu.UI_.l-.or-~, exl~til,~ prior art eystems are relatiYely 810w and ~r._r~lly manually adjusted.
2 1 04~-CA
CA 022l8305 l997- lO- lO
.._ SUMMARY OF THE INVENTION
An ob~ect of the ~n~ent invention i~ to provide a web guiding sy~t~. " for corrugat~d boards which ov_reol"cs the lin~ t;on~ and disadvd"L~a3~ of prior artunits.
s A further object of the ,t~r~ont in~entiG" is to provide a web guiding system which i8 easily installed and does not require ~dditional l"achil,ery or major mùdirl.,a~iuns to the uxi~t;"~ web.
~ yet hrther object of the present invention is to provide a web guiding system for corru~ated boards which prevents glue conL.";rlatiGn of single facer rolls.
A yet furth~r object of the pr~sc.lt invor~tioi, k to provide a web guidin~
~ystem for corru~abd boards whi~ nt~ullably adjush the glue dam in accordance with the web v~idth, There is thus provided, in n~,dOnGe ~ith a ,c~ ,r,cd _m~ud;l,,ent o~
the pru~ l inv~.~tiol" a web ali~,.,.,_r~l system which include~ at least one liner web roll affixod to a first roll sbnd and at least one medium web roll affixed to a saco, .J roll ~tand. The web alis3r,r"ent ~"~t-,." is charactorized by further including control mean~ for pre~ositionin~ the liner snd medium web rolls prior to the c~r", . ,e. ,c~ l of unwindin~ of the liner web roll and the medium web roll.
Ful ll 10u l l~re~ in accordanoe with a ~r_fw,ed embodiment of the ~r.s~. lt inve.~ ", the web ali5"""_.~ system also includes a corrugator and a ~lue dam for gluing the liner web roll to the m~dium web roll.
FWUIC.IIIG~, in accordanoe with a ~r~h,r,ed ~,ubGJi."o,lt of the present invcr,tion, the control mean~ po~itions tho 5~1ue d~m with r~r~n~ to the 2s corru~ator.
~ u,U,_r",o~, in ~ccordnnce with ~ ~r~..~ c.nbGJl~"c.lt of the pre~ent invention, the ~ltlonin~ of the ~lue dam bke- place prior to the ~ en~n~ent o~ unwinding of the medium web roll.
CA 022l8305 l997- lO- lO
.._ SUMMARY OF THE INVENTION
An ob~ect of the ~n~ent invention i~ to provide a web guiding sy~t~. " for corrugat~d boards which ov_reol"cs the lin~ t;on~ and disadvd"L~a3~ of prior artunits.
s A further object of the ,t~r~ont in~entiG" is to provide a web guiding system which i8 easily installed and does not require ~dditional l"achil,ery or major mùdirl.,a~iuns to the uxi~t;"~ web.
~ yet hrther object of the present invention is to provide a web guiding system for corru~ated boards which prevents glue conL.";rlatiGn of single facer rolls.
A yet furth~r object of the pr~sc.lt invor~tioi, k to provide a web guidin~
~ystem for corru~abd boards whi~ nt~ullably adjush the glue dam in accordance with the web v~idth, There is thus provided, in n~,dOnGe ~ith a ,c~ ,r,cd _m~ud;l,,ent o~
the pru~ l inv~.~tiol" a web ali~,.,.,_r~l system which include~ at least one liner web roll affixod to a first roll sbnd and at least one medium web roll affixed to a saco, .J roll ~tand. The web alis3r,r"ent ~"~t-,." is charactorized by further including control mean~ for pre~ositionin~ the liner snd medium web rolls prior to the c~r", . ,e. ,c~ l of unwindin~ of the liner web roll and the medium web roll.
Ful ll 10u l l~re~ in accordanoe with a ~r_fw,ed embodiment of the ~r.s~. lt inve.~ ", the web ali5"""_.~ system also includes a corrugator and a ~lue dam for gluing the liner web roll to the m~dium web roll.
FWUIC.IIIG~, in accordanoe with a ~r~h,r,ed ~,ubGJi."o,lt of the present invcr,tion, the control mean~ po~itions tho 5~1ue d~m with r~r~n~ to the 2s corru~ator.
~ u,U,_r",o~, in ~ccordnnce with ~ ~r~..~ c.nbGJl~"c.lt of the pre~ent invention, the ~ltlonin~ of the ~lue dam bke- place prior to the ~ en~n~ent o~ unwinding of the medium web roll.
3 1 046~A
CA 022l8305 l997- lO- lO
~,_ F~,ll,a"-,ole, in accord,_.,ce ~ith a ~re~rc~d el"bGdi",e.lt of the ~OIeaellt invention, the control means tracks and adjustably aligns the liner web roll and the medium web roll during ope~aliGlldl movc",e"t~ to Illai.ltai~l the pre-positioning, Fl~llh~ ,ure, in accc-rlance with a pr~fier~ed ~ b.J~i,l,_.,l of t~e pr~e"l 5 invention, the control means includes eneodin~ position apparatus coupled to the liner roll sbnd and the medium roll stand.
F~,rtl,er",Gr~, in accch~&.,~ with a ~èfel~ed embodiment of the yre~elll invention, the control ~neans further includes encoding position appdldlllS cOupled h the glu~e daln.
F~"lher",~re, in acconlance with a pr._f~ J embodiment of the l,rt:sent inv_nt;on, the encoding position appsratus incl~Jdes at least one cable transducer.
Fu~ er "on:, in ac~ance with a pr fiL.rtJ embodiment o~ the pr~sênt invention, thê encOdi~ Iy position ap~r~tus includes at least one ult~son transducer.
Fu,ll,e".,orl,, in aGcordance with a ~.re~r.~l embodiment of the ~r~__r.t invention, the control rneans further include~ a plurality of laser ~_nsGr~ coupled to the web of the liner roll and the medium roll.
Fl,lll,e,~nore, in accordance with a ~l~f~h~l e"lL~li,.lenl of the ,cr~~e.,l inv~.ltion, the control me~n~ further c~""~ s a d~t~a~ of Ji",_n~ions of 20 ata.~dard rolls.
~ Jdi~ionally, in accordance with a prcfellèJ embodiment of the pr~se,ltinvention, there is provided a Ill_U~ud for ali~nin~ a web having at least one liner ~veb roll af~ixod to a flr~t roll stand, at least one medium web ron affixed to a sec6..d roll stand, a corru~ator and ~lue ~am. The ".o~U,Gd inc~ s the step of 25 pre-positionin~ at least one of the medium and the linet web rolls.
Fu,lt,~r,..or~, in ~ cL with a pr,f~ l eln~ mel~t of the ~.e~ t ention, the step of pr~po~itionin~ is rebtive to the po-~ttlon of the corru~atot.
CA 022l8305 l997- lO- lO
~,_ F~,ll,a"-,ole, in accord,_.,ce ~ith a ~re~rc~d el"bGdi",e.lt of the ~OIeaellt invention, the control means tracks and adjustably aligns the liner web roll and the medium web roll during ope~aliGlldl movc",e"t~ to Illai.ltai~l the pre-positioning, Fl~llh~ ,ure, in accc-rlance with a pr~fier~ed ~ b.J~i,l,_.,l of t~e pr~e"l 5 invention, the control means includes eneodin~ position apparatus coupled to the liner roll sbnd and the medium roll stand.
F~,rtl,er",Gr~, in accch~&.,~ with a ~èfel~ed embodiment of the yre~elll invention, the control ~neans further includes encoding position appdldlllS cOupled h the glu~e daln.
F~"lher",~re, in acconlance with a pr._f~ J embodiment of the l,rt:sent inv_nt;on, the encoding position appsratus incl~Jdes at least one cable transducer.
Fu~ er "on:, in ac~ance with a pr fiL.rtJ embodiment o~ the pr~sênt invention, thê encOdi~ Iy position ap~r~tus includes at least one ult~son transducer.
Fu,ll,e".,orl,, in aGcordance with a ~.re~r.~l embodiment of the ~r~__r.t invention, the control rneans further include~ a plurality of laser ~_nsGr~ coupled to the web of the liner roll and the medium roll.
Fl,lll,e,~nore, in accordance with a ~l~f~h~l e"lL~li,.lenl of the ,cr~~e.,l inv~.ltion, the control me~n~ further c~""~ s a d~t~a~ of Ji",_n~ions of 20 ata.~dard rolls.
~ Jdi~ionally, in accordance with a prcfellèJ embodiment of the pr~se,ltinvention, there is provided a Ill_U~ud for ali~nin~ a web having at least one liner ~veb roll af~ixod to a flr~t roll stand, at least one medium web ron affixed to a sec6..d roll stand, a corru~ator and ~lue ~am. The ".o~U,Gd inc~ s the step of 25 pre-positionin~ at least one of the medium and the linet web rolls.
Fu,lt,~r,..or~, in ~ cL with a pr,f~ l eln~ mel~t of the ~.e~ t ention, the step of pr~po~itionin~ is rebtive to the po-~ttlon of the corru~atot.
4 1 046-C~
Furth~n..u,e in accor~ance with a p~erel~èd embodi",ent of the present in~ tiGn, ~e step of pre-pG~itlonin~ the glue dam i8 relative to the position of the corrusator.
FI,,Il.~...,Gre in accO~al-C2 with a pl_li r-_~ en,il.~in,ent of the prese~lt 5 invention, the step of pre-positioning cclllpli~as the steps of:
a) placing the at least one of the medium and the liner web rolls on the CGI~c8pOi ,ding roll stand;
b) determining the width of the at least one of the medium and the liner web rolls;
c) transferring the debrmined width to control a,~par~us;
d~ by ref~rence to the deternlined width looking up the exact dirr,ensiol,;. of the at least one of the medium and the liner web rolls fronl a ~ ~t~ 5~ of roll Ji~ 3iDI la; and e) ali~ning the at least one of the medium and the liner web rolls in acconi~n~ with the database dimensions.
. ._ BRIEF DESCRIPTION OF ~HE l~RAWINGS
The prosei1t invention will be ~r~on~tood and ap~,rP :-t~d more fully from the following .~ desc~ilJtion taken in conjunction with the app~ ed B in which:
Fig. 1 is a ~,he~ tic isu,.~_t~;c illu~tlYtiûn of a web guidin~ ~ys~m for corrugated boards, constructed and o~ rdti-/e in accordance with a pr~fe"~
~" ~b~c~iment of th~ pr~cnt invention; and Fig. 2 i8 a floJv chart represcnt~o,) of the ope,dli-n of web guiding system of Fig. 1.
~3 1 046-CA
DETAILED DESCRIPTION OF THE PRESENT INVENTION
Reference is now made to Fig. 1 which illu~b~t~& a web guiding system for corr~gatod boards, generally rLf~ r_ nc~d 10, constructed and opelati./e ac~or.lin~l to a pr~ eJ embodiment of the p,___ut Inveution.
s Web ~uiding system 10 CGlllpl;_CS a fir~t roll stz~nd 12 having at least one liner roll 14 aff~ed tl~er.!~, a ~ec~ roll stand 16 having at leas~ one medium (or fluting) roll 18 affixed tl,erLto, z~ liner splicer 20 and a medium spllcer 22, first and secûr,d pre~ att:lD 24 and 26, ~e~ecti~ely a ~in~le facer 28 and a glue dam 30. All of the abovo r~f~r~ncQi CGIllpGl,On~6 of web guiding ~ys~ern 10 are standard. known in the art, col"pon~nb llsed for the prodlJ~tion of sin~lc F~cedcorru~ated cardboard sheet.
In a pr~.,~ embodiment, web guidin~ s~t~." 10 ¢G,..pliec; a pair of liner rolls 14 and a pair of medium roll~ 18. In oper~hion, one of each of the pair of liner and modium rolls 14 and 18, n ~p~ctively i8 in use at any one time The 15 secu.,J of the pair of liner and medium roll8 1i and 18"~ e~tively are on ~t~ndby and are placed in o~,_.dtion when the fir~t pair of roll8 are ex~usted. For the pul~o_e3 of clarity, only one liner roll 14 and medium roll 18 is IIIL~ in Fig. 1.
Web ~uidin~ s~r~ite, " 10 further CGn l~rl~e3 a pair of liner cable 20 transdueers, rof~r~ cl 32L and 32M, respectivoly, a pair of ultrasonlc 0~i.s~u~ers, generally ,_A.r~nccd 34L and 34M, n~ tively, a plurality of laser sensor~, generally r~r~.~ce~r 38L and 3~M, re~.~ ly, and contro! rreans, ~enerally dwignabd 40. Sinco cable ban~cuoers 32, uitra~onic t~ans~ oer~ 34 and h~er ~en~or~ 3~ E~enerally ~_.~,." the s~me func~on for both liner roll~ 14 :~ 25 and mediurn rolls 18, they ~lave boon r~r~..~J with tho 6~ne n~-merab with tho addition of suffixes qL" and ~M', re~pectiv~ly. to di~tin~ubh which of the variou~
corn~ a~o atbched to llner ~oll 14 and medium roll 18.
Control moans 40 accurately pr~position~ liner roll 14 and mocilum roll 18 and thon constsntly track~ both lin~r and m~tium rolls, 14 and 18, respectively, ~:t~!t~ti,.~ any adj~ eul~ and al;y"",~nt to the web edges ~hich may be "- - - 4cl.
First roll stand 12 c6,n~ Es at least one longitudinal cl~.llellt 42 to w~ich are dtta. l._l a pair of arms 44. Liner roll 14 jB retained by pair of amls 44 5 and is freely rotatable about a longitudinal axis defined by a line conne~ling pair of arms 44. The liner roll web 46 i8 fed, via liner eplioer 20 and fir~t pr~heater 24, to the single-facer 28. Each of cable transducers 32L and each of the l~ltl..so,)ictransducers ~4L are suitably coupled to the co"~condi"~ arm 44. The plurality of laser sen~ors 3~SL are loc- -t~d either side of ~eb 4c ~refe,~ly bel~_en Iiner 10 splicer 20 and hrst pre-heater 24.
Similarly, second roll stand 1~ co. "~,ri~es at least one longitudinal el~ ent 48 to which are ~ldcheJ a pair of arrns 50. Medium roll 18 is retained by arms 50 and is freely rotstable about a lon~itudinal axis defined by a line cun~ arrns 50. The m~dium roll web 52 i8 fed via medium splioer 22 to 15 se GIlJ pre-heater 25 and thence to single-facer 28. Each of cablo transducers 32M and each of the ultl..son ç transducer~ 34M are ~uibbly coupled to the c~r,e~pur.Jing arm 50 of longit~dinal element 48. The plurality of laser senso~
36M are lo~at~-~l either sido of medium roll web SZ l,rLf~_rably bet~r acn medium splicer 22 and e~ ,J pre-heater 2~.
Liner roll 14 and medium roll 18 aro ~lued togell,er in sin~le ~acer 28 to produce th~ corru~ated board 54 ~~vhich then oxits via a plurality of rollors 56.
Cable transduc~rs 32, ultrasonic transducers 34 and laser l~el ,~r~ 3~
are sbndard known in the art CGlllpG~ s and are not further ~ ed. It will be a~ by ~6.~GI18 lu, vrlcl~eable in the art th~t ~ny suihble type of ~nc~d~r ~~ 25 for loc~Un~ the po6;tio,. of appar~tu6 may be used an~ that the present invention is not le~ hd to the use of cable ~nd uitra~onic tran~ducers 32 and 34, r~.spe_ti~_ly which are described by way of example only. Fu,ll,~ ,o~, cable andul~souic tra"~1uc~rs 32 and 34 i~spectiveiy, may be ;llter~l ..~e~ly used. In an alternative e.nLo.li",ent, laser sensors may be used il,~,LeaJ of l~ltldsonicsensors.
Glue dam 30 i8 a typic~l known in the art glue dam sulbble for single spacer or double backer use. In the pr~L.-~I en~Gdi",e"l, for the pur~,os~s of 5 example only, a sin~le spaoer s~f~te.l, is referred to. A cable transducer 58 is ~tL_hed to glue darn 30 for posit;u, ~ y the glue dam 30.
Control means 4Q, wllich is sultably coupled to transducers 32, ds~nic transducers 34 snd laser s~n~ûr~ 3~, ~Jr~.~3~ dats ,~cei~ed from these co"-~ol,e..~ and regulate~ tho positi~,"i~ of first and second r~:ll stsr~d~ 12 10 and 16, r~pccti~ely and glue dam 30 ~or.Jingly. Control m~ans 40 comprises, inbr alia, a ~ir'~ e CGi~illillS,~ data (8uch 2~S exact dimensions) of ~tandard rolls.
Rc~ftr-, ,~ is now al~o made to Fig. 2, which i~ a flow chart r~pr~_cntatl6r, of the op_. ~tion of web 0uidin~ system 10.
A standard medlum roll 18 i~ placed on arms 50 of first roll sbnd 1~
(sbp 202) and the opera~r closes arm~ 50 onto the rnedium roll 18 (step 204).
Cable and uH.as~: transducer 32M and 34M, r~c~ ely, (lo~ on eaoh arm 50) debrmine the wldth of the rnedium roll 18 and transmit this dat~ to control means ~0 (step 206). Control mean~ 40 refers to its d~t~h- ,~ to lookup the exact 20 di.. ensions of the medium roll 18 place~ on arms 50 (sbp 208). The medium roll 18 i8 then accurately pûsitioned by means of the pair of ul~ G"ic tr~ns~lu~rs 34M which .~iv_ instnuctions ~rorn eontrol means 40. (step 210).
The above o~ ti~n~ (sbps 202 - 210) a-e then carried out for liner roll ~4 ~tep 212).
2S The ~lue dam 30 i8 then~ccurately r:~itioned, by means of ~ablo tran~duoer~ 58 (~tep 214), ac~,Jin~,~ to the position set for modiurn roll 18.
It i~ a feature of the invenffon U~at, the liner and meciium rolls 14 and 18, n-~re~ively are ifi~pchdently pr~ ~o~7t;,,-,-~d prior to the un.v;.-. ;n~ of the rolls and that the ~ition of the medium roll 18 i~ not d~t~..";.~_l by the cG.",.,on 9 1 04~5-CA
-"mssbr/slave" ar,ans~"e~"l. Thu8, t~le positioning of the liner roll 14 is not depe. ~ t on the p.Js;~;sr,.,~g of the medium roll 18, or vice versa, It is a further featu~e of the ill.Je..ltiG~ that, during pre-positionin~, control means 40 takes into account the offset Let~ren the n,at~rial and the facer 28 to5 achieve accurate pre-po~itioning w-~hin a tolerance of +/- 3mm. Generally, prior an web systems do not allo~H for the offset betNeen paper and maci,i"e and if any adjusl. "_. ,t is made, only adjust the r~lls relative to each other at the gluin~ stage.
Since apprt,xi",~t ly 15 to 20 m of paper travels from each roll to the glue dam 30 before gluing be~ins, pre-po3itiuning and accurab adjustment o~ the glue dam 30 10 saves tllis n~,rrl,a'l~ ~vasted roll Illd~,rial.
CUnIIt~G~ a single ~acer has a vacuum or pr~ssure slot to ensure that tlle fluting roll retains its gluin~ capabilities while being affixed to the liner roll 14.
The ~,ositioning of the web within the ~Tngle ~ac~r take~ into account the vacuum or pressure 81Ots, U~a~ r o~ti,,,ici,,g the w~b position within the facer, 1S Durin~ corrugation, as the liner and medium rolls 14 and 18"~s~cti~Jely are un~inding and traveling toward~ thê glue darn 30, on-line positionin~ takes place (step ~16). On-line posisioning is CG-~b~'l~ by laser s~nsor~ 36 in conjunction with control means 40. Laser sens~r~ 36, which ~_"~r~lly only have a 30 mrn range, ~enso the posfflo~, of the liner and medium rolls 14 and 18, 20 rt~p~ ely and continuously transfer the data to control mean~ 40. Control means 40 ~'1j"5~ liner and medium rolls 14 ~nd ~8, re~pectively via instructionsto ul~ "i~ se~,~G~
It will be a~,~r6~;Jt~ 1 by persons ~killed in the art that the invc.ltiu,- is applicable to double backer as ~ell as ~in~le facer co~rugator~ and is al~o Z5 ~pplicable to any other type ~f web. A feature of the in~/~uti~;n is the accurate alisii,.,.ent of a web wKhout the ne~d for chan~e~ to ~ta"d~n~ web guiding equipment or the addition of cross maehine rollers for example.
It will be fiurther appr~ nJ that the p~ nt inve. ~iGn is not limlted by what has been desc,iL_~ I,er~i"al~ove and that nulnêrous modi~icatior,8, all of which fall within the scope of the pr~&~i~t invention, exist. For ~xample, while the present invention ha~ been de~,,iL_d with res~ue~t to a web guidin~ system cG,.,,uri_ing a sin~le liner roll and medium roll, a pair of liner rolls and a pair of medium rolls may be used, each of the pair of liner rolls and medium rolls to b~5 used alten,a~ ely.
It will be ~p~r~ tkd by persons skilled in the art that the pr~sent in~e, ItiG~ i8 not limited by what has been particularly shown and descri~ed herein above. Rather the s~ope of the invention is d~ d by the claims which follo~:
Furth~n..u,e in accor~ance with a p~erel~èd embodi",ent of the present in~ tiGn, ~e step of pre-pG~itlonin~ the glue dam i8 relative to the position of the corrusator.
FI,,Il.~...,Gre in accO~al-C2 with a pl_li r-_~ en,il.~in,ent of the prese~lt 5 invention, the step of pre-positioning cclllpli~as the steps of:
a) placing the at least one of the medium and the liner web rolls on the CGI~c8pOi ,ding roll stand;
b) determining the width of the at least one of the medium and the liner web rolls;
c) transferring the debrmined width to control a,~par~us;
d~ by ref~rence to the deternlined width looking up the exact dirr,ensiol,;. of the at least one of the medium and the liner web rolls fronl a ~ ~t~ 5~ of roll Ji~ 3iDI la; and e) ali~ning the at least one of the medium and the liner web rolls in acconi~n~ with the database dimensions.
. ._ BRIEF DESCRIPTION OF ~HE l~RAWINGS
The prosei1t invention will be ~r~on~tood and ap~,rP :-t~d more fully from the following .~ desc~ilJtion taken in conjunction with the app~ ed B in which:
Fig. 1 is a ~,he~ tic isu,.~_t~;c illu~tlYtiûn of a web guidin~ ~ys~m for corrugated boards, constructed and o~ rdti-/e in accordance with a pr~fe"~
~" ~b~c~iment of th~ pr~cnt invention; and Fig. 2 i8 a floJv chart represcnt~o,) of the ope,dli-n of web guiding system of Fig. 1.
~3 1 046-CA
DETAILED DESCRIPTION OF THE PRESENT INVENTION
Reference is now made to Fig. 1 which illu~b~t~& a web guiding system for corr~gatod boards, generally rLf~ r_ nc~d 10, constructed and opelati./e ac~or.lin~l to a pr~ eJ embodiment of the p,___ut Inveution.
s Web ~uiding system 10 CGlllpl;_CS a fir~t roll stz~nd 12 having at least one liner roll 14 aff~ed tl~er.!~, a ~ec~ roll stand 16 having at leas~ one medium (or fluting) roll 18 affixed tl,erLto, z~ liner splicer 20 and a medium spllcer 22, first and secûr,d pre~ att:lD 24 and 26, ~e~ecti~ely a ~in~le facer 28 and a glue dam 30. All of the abovo r~f~r~ncQi CGIllpGl,On~6 of web guiding ~ys~ern 10 are standard. known in the art, col"pon~nb llsed for the prodlJ~tion of sin~lc F~cedcorru~ated cardboard sheet.
In a pr~.,~ embodiment, web guidin~ s~t~." 10 ¢G,..pliec; a pair of liner rolls 14 and a pair of medium roll~ 18. In oper~hion, one of each of the pair of liner and modium rolls 14 and 18, n ~p~ctively i8 in use at any one time The 15 secu.,J of the pair of liner and medium roll8 1i and 18"~ e~tively are on ~t~ndby and are placed in o~,_.dtion when the fir~t pair of roll8 are ex~usted. For the pul~o_e3 of clarity, only one liner roll 14 and medium roll 18 is IIIL~ in Fig. 1.
Web ~uidin~ s~r~ite, " 10 further CGn l~rl~e3 a pair of liner cable 20 transdueers, rof~r~ cl 32L and 32M, respectivoly, a pair of ultrasonlc 0~i.s~u~ers, generally ,_A.r~nccd 34L and 34M, n~ tively, a plurality of laser sensor~, generally r~r~.~ce~r 38L and 3~M, re~.~ ly, and contro! rreans, ~enerally dwignabd 40. Sinco cable ban~cuoers 32, uitra~onic t~ans~ oer~ 34 and h~er ~en~or~ 3~ E~enerally ~_.~,." the s~me func~on for both liner roll~ 14 :~ 25 and mediurn rolls 18, they ~lave boon r~r~..~J with tho 6~ne n~-merab with tho addition of suffixes qL" and ~M', re~pectiv~ly. to di~tin~ubh which of the variou~
corn~ a~o atbched to llner ~oll 14 and medium roll 18.
Control moans 40 accurately pr~position~ liner roll 14 and mocilum roll 18 and thon constsntly track~ both lin~r and m~tium rolls, 14 and 18, respectively, ~:t~!t~ti,.~ any adj~ eul~ and al;y"",~nt to the web edges ~hich may be "- - - 4cl.
First roll stand 12 c6,n~ Es at least one longitudinal cl~.llellt 42 to w~ich are dtta. l._l a pair of arms 44. Liner roll 14 jB retained by pair of amls 44 5 and is freely rotatable about a longitudinal axis defined by a line conne~ling pair of arms 44. The liner roll web 46 i8 fed, via liner eplioer 20 and fir~t pr~heater 24, to the single-facer 28. Each of cable transducers 32L and each of the l~ltl..so,)ictransducers ~4L are suitably coupled to the co"~condi"~ arm 44. The plurality of laser sen~ors 3~SL are loc- -t~d either side of ~eb 4c ~refe,~ly bel~_en Iiner 10 splicer 20 and hrst pre-heater 24.
Similarly, second roll stand 1~ co. "~,ri~es at least one longitudinal el~ ent 48 to which are ~ldcheJ a pair of arrns 50. Medium roll 18 is retained by arms 50 and is freely rotstable about a lon~itudinal axis defined by a line cun~ arrns 50. The m~dium roll web 52 i8 fed via medium splioer 22 to 15 se GIlJ pre-heater 25 and thence to single-facer 28. Each of cablo transducers 32M and each of the ultl..son ç transducer~ 34M are ~uibbly coupled to the c~r,e~pur.Jing arm 50 of longit~dinal element 48. The plurality of laser senso~
36M are lo~at~-~l either sido of medium roll web SZ l,rLf~_rably bet~r acn medium splicer 22 and e~ ,J pre-heater 2~.
Liner roll 14 and medium roll 18 aro ~lued togell,er in sin~le ~acer 28 to produce th~ corru~ated board 54 ~~vhich then oxits via a plurality of rollors 56.
Cable transduc~rs 32, ultrasonic transducers 34 and laser l~el ,~r~ 3~
are sbndard known in the art CGlllpG~ s and are not further ~ ed. It will be a~ by ~6.~GI18 lu, vrlcl~eable in the art th~t ~ny suihble type of ~nc~d~r ~~ 25 for loc~Un~ the po6;tio,. of appar~tu6 may be used an~ that the present invention is not le~ hd to the use of cable ~nd uitra~onic tran~ducers 32 and 34, r~.spe_ti~_ly which are described by way of example only. Fu,ll,~ ,o~, cable andul~souic tra"~1uc~rs 32 and 34 i~spectiveiy, may be ;llter~l ..~e~ly used. In an alternative e.nLo.li",ent, laser sensors may be used il,~,LeaJ of l~ltldsonicsensors.
Glue dam 30 i8 a typic~l known in the art glue dam sulbble for single spacer or double backer use. In the pr~L.-~I en~Gdi",e"l, for the pur~,os~s of 5 example only, a sin~le spaoer s~f~te.l, is referred to. A cable transducer 58 is ~tL_hed to glue darn 30 for posit;u, ~ y the glue dam 30.
Control means 4Q, wllich is sultably coupled to transducers 32, ds~nic transducers 34 snd laser s~n~ûr~ 3~, ~Jr~.~3~ dats ,~cei~ed from these co"-~ol,e..~ and regulate~ tho positi~,"i~ of first and second r~:ll stsr~d~ 12 10 and 16, r~pccti~ely and glue dam 30 ~or.Jingly. Control m~ans 40 comprises, inbr alia, a ~ir'~ e CGi~illillS,~ data (8uch 2~S exact dimensions) of ~tandard rolls.
Rc~ftr-, ,~ is now al~o made to Fig. 2, which i~ a flow chart r~pr~_cntatl6r, of the op_. ~tion of web 0uidin~ system 10.
A standard medlum roll 18 i~ placed on arms 50 of first roll sbnd 1~
(sbp 202) and the opera~r closes arm~ 50 onto the rnedium roll 18 (step 204).
Cable and uH.as~: transducer 32M and 34M, r~c~ ely, (lo~ on eaoh arm 50) debrmine the wldth of the rnedium roll 18 and transmit this dat~ to control means ~0 (step 206). Control mean~ 40 refers to its d~t~h- ,~ to lookup the exact 20 di.. ensions of the medium roll 18 place~ on arms 50 (sbp 208). The medium roll 18 i8 then accurately pûsitioned by means of the pair of ul~ G"ic tr~ns~lu~rs 34M which .~iv_ instnuctions ~rorn eontrol means 40. (step 210).
The above o~ ti~n~ (sbps 202 - 210) a-e then carried out for liner roll ~4 ~tep 212).
2S The ~lue dam 30 i8 then~ccurately r:~itioned, by means of ~ablo tran~duoer~ 58 (~tep 214), ac~,Jin~,~ to the position set for modiurn roll 18.
It i~ a feature of the invenffon U~at, the liner and meciium rolls 14 and 18, n-~re~ively are ifi~pchdently pr~ ~o~7t;,,-,-~d prior to the un.v;.-. ;n~ of the rolls and that the ~ition of the medium roll 18 i~ not d~t~..";.~_l by the cG.",.,on 9 1 04~5-CA
-"mssbr/slave" ar,ans~"e~"l. Thu8, t~le positioning of the liner roll 14 is not depe. ~ t on the p.Js;~;sr,.,~g of the medium roll 18, or vice versa, It is a further featu~e of the ill.Je..ltiG~ that, during pre-positionin~, control means 40 takes into account the offset Let~ren the n,at~rial and the facer 28 to5 achieve accurate pre-po~itioning w-~hin a tolerance of +/- 3mm. Generally, prior an web systems do not allo~H for the offset betNeen paper and maci,i"e and if any adjusl. "_. ,t is made, only adjust the r~lls relative to each other at the gluin~ stage.
Since apprt,xi",~t ly 15 to 20 m of paper travels from each roll to the glue dam 30 before gluing be~ins, pre-po3itiuning and accurab adjustment o~ the glue dam 30 10 saves tllis n~,rrl,a'l~ ~vasted roll Illd~,rial.
CUnIIt~G~ a single ~acer has a vacuum or pr~ssure slot to ensure that tlle fluting roll retains its gluin~ capabilities while being affixed to the liner roll 14.
The ~,ositioning of the web within the ~Tngle ~ac~r take~ into account the vacuum or pressure 81Ots, U~a~ r o~ti,,,ici,,g the w~b position within the facer, 1S Durin~ corrugation, as the liner and medium rolls 14 and 18"~s~cti~Jely are un~inding and traveling toward~ thê glue darn 30, on-line positionin~ takes place (step ~16). On-line posisioning is CG-~b~'l~ by laser s~nsor~ 36 in conjunction with control means 40. Laser sens~r~ 36, which ~_"~r~lly only have a 30 mrn range, ~enso the posfflo~, of the liner and medium rolls 14 and 18, 20 rt~p~ ely and continuously transfer the data to control mean~ 40. Control means 40 ~'1j"5~ liner and medium rolls 14 ~nd ~8, re~pectively via instructionsto ul~ "i~ se~,~G~
It will be a~,~r6~;Jt~ 1 by persons ~killed in the art that the invc.ltiu,- is applicable to double backer as ~ell as ~in~le facer co~rugator~ and is al~o Z5 ~pplicable to any other type ~f web. A feature of the in~/~uti~;n is the accurate alisii,.,.ent of a web wKhout the ne~d for chan~e~ to ~ta"d~n~ web guiding equipment or the addition of cross maehine rollers for example.
It will be fiurther appr~ nJ that the p~ nt inve. ~iGn is not limlted by what has been desc,iL_~ I,er~i"al~ove and that nulnêrous modi~icatior,8, all of which fall within the scope of the pr~&~i~t invention, exist. For ~xample, while the present invention ha~ been de~,,iL_d with res~ue~t to a web guidin~ system cG,.,,uri_ing a sin~le liner roll and medium roll, a pair of liner rolls and a pair of medium rolls may be used, each of the pair of liner rolls and medium rolls to b~5 used alten,a~ ely.
It will be ~p~r~ tkd by persons skilled in the art that the pr~sent in~e, ItiG~ i8 not limited by what has been particularly shown and descri~ed herein above. Rather the s~ope of the invention is d~ d by the claims which follo~:
Claims (15)
1. A web alignment system comprising at least one liner web roll affixed to a first roll stand, at least one medium web roll affixed to a second roll stand said web alignment system characterized by further comprising control means for pre-positioning said liner web roll and said medium web roll prior to the commencement of unwinding of said liner web roll and said medium web roll.
2. A web alignment system according to claim 1 and further comprising a corrugator and a glue dam for gluing said at least one liner web roll to said at least one medium web roll.
3. A web alignment system according to claim 2 and wherein said control means positions said glue dam with reference to said corrugator.
4. A web alignment system according to claim 3 and wherein said positioning of said glue dam takes place prior to the commencement of unwinding of said medium web roll.
5. A web alignment system according to claim 1 and wherein said control means tracks and adjustably aligns said liner web roll and said medium web roll during operational movements to maintain said pre-positioning.
6. A web alignment system according to claim 1 and wherein said control means comprises encoding position apparatus coupled to said liner roll stand and said medium roll stand.
7. A web alignment system according to claim 2 and wherein said control means further comprises encoding position apparatus coupled to said glue dam.
8. A web alignment system according to claim 6 and wherein said encoding position apparatus comprises any of a group including at least one cable transducer, and at least one ultrasonic transducer.
9. A web alignment system according to claim 7 and wherein said encoding position apparatus comprises any of a group including at least one cable transducer, and at least one utrasonic transducer.
10. A web alignment system according to claim 1 and wherein said control means further comprises a plurality of laser sensors coupled to the web of said liner roll and said medium roll.
11. A web alignment system according to claim 1 and wherein said control means further comprises a database of dimensions of standard rolls.
12. A method for aligning a web comprising at least one liner web roll affixed to a first roll stand at least one medium web roll affixed to a second roll stand and a corrugator and glue dam, said method comprising the stop of pre-positioning at least one of said medium and said liner web rolls.
13. A method according to claim 12 and wherein said step of pre-positioning is relative to the position of said corrugator.
14. A method according to claim 12 and further comprising the step of pre-positioning said glue dam relative to the position of said corrugator.
15. A method according to claim 12 and wherein said step of pre-positioning comprises the steps of:
placing said at least one of said medium and said liner web rolls on said corresponding roll stand;
determining the width of said at least one of said medium and said liner web rolls;
transferring said determined width to control apparatus;
by reference to said determined width, looking up the exact dimensions of said at least one of said medium and said liner web rolls from a database of roll dimensions; and aligning said at least one of said medium and said liner web rolls in accordance with said database dimensions.
placing said at least one of said medium and said liner web rolls on said corresponding roll stand;
determining the width of said at least one of said medium and said liner web rolls;
transferring said determined width to control apparatus;
by reference to said determined width, looking up the exact dimensions of said at least one of said medium and said liner web rolls from a database of roll dimensions; and aligning said at least one of said medium and said liner web rolls in accordance with said database dimensions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL11941696A IL119416A0 (en) | 1996-10-13 | 1996-10-13 | Web alignment system and method |
| IL119416 | 1996-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2218305A1 true CA2218305A1 (en) | 1998-04-13 |
Family
ID=11069374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002218305A Abandoned CA2218305A1 (en) | 1996-10-13 | 1997-10-10 | Web alignment system and method |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0835835A3 (en) |
| CA (1) | CA2218305A1 (en) |
| IL (1) | IL119416A0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307071A (en) * | 2021-04-21 | 2021-08-27 | 彩虹（合肥）液晶玻璃有限公司 | Automatic deviation correcting device for glass substrate isolation PE film |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19955903C2 (en) * | 1999-11-20 | 2002-08-29 | Linus Heil | Laminating apparatus |
| US20030116725A1 (en) * | 2001-12-21 | 2003-06-26 | Kimberly-Clark Worldwide, Inc. | Web detection with gradient-indexed optics |
| DE10352621B4 (en) * | 2003-07-11 | 2006-12-14 | Koenig & Bauer Ag | Method for the lateral alignment of a web |
| WO2005105636A1 (en) * | 2004-04-28 | 2005-11-10 | Mitsubishi Heavy Industries Ltd. | Single facer web member position adjusting device, and single facer sizing device |
| DE102005032599B3 (en) * | 2005-07-13 | 2006-10-19 | Koenig & Bauer Ag | Device for minimizing edge offset during placement of material strip of new material roll on material strip of existing material roll has roll supports for each receiving material roll |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3152941A (en) * | 1960-12-14 | 1964-10-13 | Corrugating Technicians Inc | Multi-ply web forming apparatus with edge aligning means |
-
1996
- 1996-10-13 IL IL11941696A patent/IL119416A0/en unknown
-
1997
- 1997-10-10 CA CA002218305A patent/CA2218305A1/en not_active Abandoned
- 1997-10-13 EP EP97117691A patent/EP0835835A3/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307071A (en) * | 2021-04-21 | 2021-08-27 | 彩虹（合肥）液晶玻璃有限公司 | Automatic deviation correcting device for glass substrate isolation PE film |
| CN113307071B (en) * | 2021-04-21 | 2022-04-29 | 彩虹（合肥）液晶玻璃有限公司 | Automatic deviation correcting device for glass substrate isolation PE film |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0835835A3 (en) | 1998-12-02 |
| IL119416A0 (en) | 1997-01-10 |
| EP0835835A2 (en) | 1998-04-15 |
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| Date | Code | Title | Description |
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| FZDE | Discontinued |