CA1214384A - Method and apparatus for wrapping metal coil - Google Patents
Method and apparatus for wrapping metal coilInfo
- Publication number
- CA1214384A CA1214384A CA000403698A CA403698A CA1214384A CA 1214384 A CA1214384 A CA 1214384A CA 000403698 A CA000403698 A CA 000403698A CA 403698 A CA403698 A CA 403698A CA 1214384 A CA1214384 A CA 1214384A
- Authority
- CA
- Canada
- Prior art keywords
- wrapping paper
- winding
- metal coil
- roll
- cut
- 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.)
- Expired
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Abstract
ABSTRACT OF THE INVENTION:
Wrapping of a coiled strip of thin sheet of steel or other metal produced in a rolling mill is accomplished by placing under the coiled strip a wrapping paper of a suitable width cut to a length sufficient to encircle the outer periphery of the coiled strip, winding the leading half of the wrapping paper on a rolling core, fixing the tail end of the wrapping paper in position, rotating the aforementioned rolling core in the direction of unwinding the wound wrapping paper and at the same time, revolving the rolling core around the outer periphery of the coiled strip thereby winding the unwound wrapping paper on the coiled strip, thereafter superposing the leading end and the tail end of the wrapping paper one over the other and joining the overlapping ends fast to each other.
Wrapping of a coiled strip of thin sheet of steel or other metal produced in a rolling mill is accomplished by placing under the coiled strip a wrapping paper of a suitable width cut to a length sufficient to encircle the outer periphery of the coiled strip, winding the leading half of the wrapping paper on a rolling core, fixing the tail end of the wrapping paper in position, rotating the aforementioned rolling core in the direction of unwinding the wound wrapping paper and at the same time, revolving the rolling core around the outer periphery of the coiled strip thereby winding the unwound wrapping paper on the coiled strip, thereafter superposing the leading end and the tail end of the wrapping paper one over the other and joining the overlapping ends fast to each other.
Description
3~
MET~OD AND APPARATUS FOR WR~PPING METAL COIL
This invention relates to method and apparatus for wrapping a coil of metal strip (hereinafter referred to as "metal coil"). Generally, a metal coil obtained by rolling a metal into a thin strip of sheet and winding -this strip into a coil is shipped out as enclosed in a wrapping paper.
Wrapping a coil o thin steel sheet produced in a steel mill, for example, is effected by covering the inner peripheral surface of the coil with a wrapping paper, winding a wrapping paper of large width on the outer peripheral surface of the coil, and folding down toward the center of the coil the ~xcess wid-ths of the wrapping paper extruding from the opposite edges of the roll to cover the edge faces of the coil. The manual work of winding the wrapping paper of the excess widths accurately and tightly on the metal coil has proved to be difficult.
Mechanization of continuous winding work is easy.
In contrast, mechanization of the work of winding a wrapping paper just once around the outer periphery of a coil is unexpectedly difficult and remains yet to be developed.
The work, therefore is still being performed by a trouble-some manual procedure.
It is accordingly an object of this invention to provide simple and efficient method for winding a wrapping paper onto the outer periphery of a metal coil and an apparatus for mechanizing this method.
According to the present invention, there is provided a method of winding a wrapping paper onto the outer periphery of a metal coil, which comprises the steps of selecting from a plurality of rolls of wrapping paper having various widths one particular roll of wrapping paper of a required width, drawing the wrapping paper from the selec-ted roll~ cutting a drawn portion of the wrapping paper to a length conforming to the length of ~r~, ~LZ~3~1~
the periphery of the metal coil being wrapped, forwarding the cut length of wrapping paper to a position below the metal coil, winding the forwarded cut wrapping paper on a winding roll retained horizontally at a position sligh-tly forward from the position below the metal coil, discontinuing the winding of wrapping paper after a tail end of the cut length of wrapping paper has reached a position slightly rearward from the position below -the metal coil and has assumed a restrained state, rendering the winding roll rotatable and moving it upwardly, transversely, and downwardly thereby allowing the cut length of wrapping paper to unwind from the winding roll in consequence of the pull exerted by -the tail end in the state of restraint and tQ be draped about a lower half portion and an upper portion of the outer periphery of the metal coil, and joining a leading end of the cut length of wrapping paper, separated from the winding roll, and the tail end of the wrapping paper to each other on the outer periphery of the metal coil.
The present invention further provides an apparatus for winding a wrapping paper on the outer periphery of a metal coil comprising means for drawing a portion of the wrapping paper from a storage roll and cut-ting the drawn portion to a required length, a conveyor for forwarding the cut length of wrapping paper to a first position below the metal coil, a winding roll extending horizontally at a second position slightly forward from the first position, winding means for winding the cut length of wrapping paper onto the winding roll and discontinuing the winding of wrapping paper after a tail end of the cut length of wrapping paper has reached a third position slightly rearward from the first position, means for restraining the tail end, and means for displacing the winding roll upwardly and transversely while allowing the winding roll to rotate to unwind the cut length from the winding roll onto the metal coil.
~Z~ 384~
Unlike the conven-tional manual process which relies on a worker to take hold of the leading end of a cut length of wrapping paper and wind the paper all around the outer periphery of the metal coil, the present invention first causes a winding roll to take up thereon a length of wrapping paper and then allows the winding roll to rotate in the direction of paying off the wound wrapping paper and, at -the same time, to be displaced around the outer periphery of the coil being wrapped.
Since the wrapping paper is kept uniform at all times relative to the direction of its own length and brought parallel to the surface of the coil, the wrapping paper does not produce warps and wrinkles.
While the wrapping paper is being wound on the metal coil, the winding roll is rotated to pay off the wound wrapping paper owing to the restraint of the -tail end of the wrapping paper. By regulating a braking mechanism for this unwinding rotation, the tension with which the wrapping paper is wound on the metal coil can be properly adjusted. Thus, the wrapping paper may be wound tightly or loosely on the outer periphery of the metal coil at will.
For the same purpose, the winding roll may be revolved in contact with the outer periphery of the metal coil to effect tight winding of the wrapping paper or as held slightly spaced from the outer periphery of the metal coil to effect loose winding.
The winding of wrapping paper by means of the winding roll is such that required wrapping of the metal coil can be safely accomplished even when the metal coil is more or less displaced from its designated position or when the metal coil moves while the winding is in pxocess.
Consequently, it has now become feasible for the metal coil to be wrapped on the outer periphery thereof while suspended from a crane and, on completion of the wrapping, transferred to 2 different position for wrapping of the opposite edge surfaces thereof.
3~l~
Further from the standpoint of safety of wor~, the fact that no worker need use any edged tool designed for cutting the wrapping paper during the work of wrapping constitutes a conspicuous effect of this invention.
Figure 1 is a front view of one embodiment of the wrapping apparatus according to the present invention.
Figure 2 is a front view of another embodiment of the storage for wrapping paper rolls in the apparatus of Figure 1.
Figure 3 is a plan view of the embodiment of Figure 1.
Figure 4 is a front view of a wrapping paper feed device for drawing in a straightened state a wrapping paper from the storage for wrapping paper rolls of Figure
MET~OD AND APPARATUS FOR WR~PPING METAL COIL
This invention relates to method and apparatus for wrapping a coil of metal strip (hereinafter referred to as "metal coil"). Generally, a metal coil obtained by rolling a metal into a thin strip of sheet and winding -this strip into a coil is shipped out as enclosed in a wrapping paper.
Wrapping a coil o thin steel sheet produced in a steel mill, for example, is effected by covering the inner peripheral surface of the coil with a wrapping paper, winding a wrapping paper of large width on the outer peripheral surface of the coil, and folding down toward the center of the coil the ~xcess wid-ths of the wrapping paper extruding from the opposite edges of the roll to cover the edge faces of the coil. The manual work of winding the wrapping paper of the excess widths accurately and tightly on the metal coil has proved to be difficult.
Mechanization of continuous winding work is easy.
In contrast, mechanization of the work of winding a wrapping paper just once around the outer periphery of a coil is unexpectedly difficult and remains yet to be developed.
The work, therefore is still being performed by a trouble-some manual procedure.
It is accordingly an object of this invention to provide simple and efficient method for winding a wrapping paper onto the outer periphery of a metal coil and an apparatus for mechanizing this method.
According to the present invention, there is provided a method of winding a wrapping paper onto the outer periphery of a metal coil, which comprises the steps of selecting from a plurality of rolls of wrapping paper having various widths one particular roll of wrapping paper of a required width, drawing the wrapping paper from the selec-ted roll~ cutting a drawn portion of the wrapping paper to a length conforming to the length of ~r~, ~LZ~3~1~
the periphery of the metal coil being wrapped, forwarding the cut length of wrapping paper to a position below the metal coil, winding the forwarded cut wrapping paper on a winding roll retained horizontally at a position sligh-tly forward from the position below the metal coil, discontinuing the winding of wrapping paper after a tail end of the cut length of wrapping paper has reached a position slightly rearward from the position below -the metal coil and has assumed a restrained state, rendering the winding roll rotatable and moving it upwardly, transversely, and downwardly thereby allowing the cut length of wrapping paper to unwind from the winding roll in consequence of the pull exerted by -the tail end in the state of restraint and tQ be draped about a lower half portion and an upper portion of the outer periphery of the metal coil, and joining a leading end of the cut length of wrapping paper, separated from the winding roll, and the tail end of the wrapping paper to each other on the outer periphery of the metal coil.
The present invention further provides an apparatus for winding a wrapping paper on the outer periphery of a metal coil comprising means for drawing a portion of the wrapping paper from a storage roll and cut-ting the drawn portion to a required length, a conveyor for forwarding the cut length of wrapping paper to a first position below the metal coil, a winding roll extending horizontally at a second position slightly forward from the first position, winding means for winding the cut length of wrapping paper onto the winding roll and discontinuing the winding of wrapping paper after a tail end of the cut length of wrapping paper has reached a third position slightly rearward from the first position, means for restraining the tail end, and means for displacing the winding roll upwardly and transversely while allowing the winding roll to rotate to unwind the cut length from the winding roll onto the metal coil.
~Z~ 384~
Unlike the conven-tional manual process which relies on a worker to take hold of the leading end of a cut length of wrapping paper and wind the paper all around the outer periphery of the metal coil, the present invention first causes a winding roll to take up thereon a length of wrapping paper and then allows the winding roll to rotate in the direction of paying off the wound wrapping paper and, at -the same time, to be displaced around the outer periphery of the coil being wrapped.
Since the wrapping paper is kept uniform at all times relative to the direction of its own length and brought parallel to the surface of the coil, the wrapping paper does not produce warps and wrinkles.
While the wrapping paper is being wound on the metal coil, the winding roll is rotated to pay off the wound wrapping paper owing to the restraint of the -tail end of the wrapping paper. By regulating a braking mechanism for this unwinding rotation, the tension with which the wrapping paper is wound on the metal coil can be properly adjusted. Thus, the wrapping paper may be wound tightly or loosely on the outer periphery of the metal coil at will.
For the same purpose, the winding roll may be revolved in contact with the outer periphery of the metal coil to effect tight winding of the wrapping paper or as held slightly spaced from the outer periphery of the metal coil to effect loose winding.
The winding of wrapping paper by means of the winding roll is such that required wrapping of the metal coil can be safely accomplished even when the metal coil is more or less displaced from its designated position or when the metal coil moves while the winding is in pxocess.
Consequently, it has now become feasible for the metal coil to be wrapped on the outer periphery thereof while suspended from a crane and, on completion of the wrapping, transferred to 2 different position for wrapping of the opposite edge surfaces thereof.
3~l~
Further from the standpoint of safety of wor~, the fact that no worker need use any edged tool designed for cutting the wrapping paper during the work of wrapping constitutes a conspicuous effect of this invention.
Figure 1 is a front view of one embodiment of the wrapping apparatus according to the present invention.
Figure 2 is a front view of another embodiment of the storage for wrapping paper rolls in the apparatus of Figure 1.
Figure 3 is a plan view of the embodiment of Figure 1.
Figure 4 is a front view of a wrapping paper feed device for drawing in a straightened state a wrapping paper from the storage for wrapping paper rolls of Figure
2 and a device for correcting the curling tendency of the wrapping paper drawn out of the roll.
Figure 5 is an enlarged explanatory view showing -the embodiment of Figure 4.
Figure 6 is a plan view of the wrapping paper feed device of Figure 5.
Figure 7 is a front view of another embodiment of the wrapping paper feed device.
Figure 1 and Figure 3 represent one embodiment of the present invention. The article to be wrapped in this embodiment is a coil C of thin steel sheet. In the present ~,,2~9~38~
ca~s, the ¢oil C i~ ~upported on a 3uspen~ion arm R and ~uspQndQd in posi~lon ~ h~ly ~bov~ a coiî r~ 33t 6 of a Alat conveyor 3b. Af~er wrapping paper ha~ b~ n set in po~ition below th~ coll, the coil C is lowered onto 5 the r~c~ivlng ~oat 6, wra~ped on tho ou~er perlpher~ wi~h th~ wrap~ing paper, and i~ne~ia~ly tran~fexr~ to the next ~tep of op~r~tlon,.
Th~ prlnalpal part~ o~ ~h~ wrapp~ng appa.r.~t~ thl~
embodlment ~xe ~torage 1 fc)r wr~ppin~ paper roll~, m~ahani~m 10 2 or drawing out the wrappiny paI~er ~rom it~ roll, corre¢t-ing the curllng t~ndency o the drawn wr~ppir~g ~aper, and ~uttlng the wa applng pzaper to ~ r~uired length, ~::onv~syor 3 for trans~rring t~le aut length of wrapplng p2lper to below ~he coil C, win~lng roll 4 for windiny th~r~on the cut 15 length o~ wrappi.n~ p~per, windln~3 mechanl~m S, m~ans or re~tralning the t~ nd o~ th~ cut lenqth of wrappln~
p~per, e . g D a BUCt~ belk 3a o the a~orem~nt~ oned con-~rRyor 3 in the pre~ent c~a~ uspen~{t~n arm~ 7 ~or ~upportlng in posltion the afor~m~ntioned windlng roll 4, 3upport~ng 20 trolley 8 to whis:~h ~h~ nrm~ 7 axel attach~cl ~a~t, ~tc.
Th0 method of wr~pplng a~cordlng to $he pr~ent invention will be de~rihed below with r~f~r~nGa to the construc~tion of 'ch~ px~n~ ~Tn~dimsnt. It ~should be noted her~ that Por 'che m3thod o~ t~is invention, u~e ~:~ th~
~5 apparatus o~ thi~ invention i~ not an es~nticll re~ ixem2nt.
In th~ storage 1 :for wrapping p~per rolls ~ a plurali~y o~ wrayping pap~ o~ v~ry~Lng wldt h~ a~. dlsposed in
Figure 5 is an enlarged explanatory view showing -the embodiment of Figure 4.
Figure 6 is a plan view of the wrapping paper feed device of Figure 5.
Figure 7 is a front view of another embodiment of the wrapping paper feed device.
Figure 1 and Figure 3 represent one embodiment of the present invention. The article to be wrapped in this embodiment is a coil C of thin steel sheet. In the present ~,,2~9~38~
ca~s, the ¢oil C i~ ~upported on a 3uspen~ion arm R and ~uspQndQd in posi~lon ~ h~ly ~bov~ a coiî r~ 33t 6 of a Alat conveyor 3b. Af~er wrapping paper ha~ b~ n set in po~ition below th~ coll, the coil C is lowered onto 5 the r~c~ivlng ~oat 6, wra~ped on tho ou~er perlpher~ wi~h th~ wrap~ing paper, and i~ne~ia~ly tran~fexr~ to the next ~tep of op~r~tlon,.
Th~ prlnalpal part~ o~ ~h~ wrapp~ng appa.r.~t~ thl~
embodlment ~xe ~torage 1 fc)r wr~ppin~ paper roll~, m~ahani~m 10 2 or drawing out the wrappiny paI~er ~rom it~ roll, corre¢t-ing the curllng t~ndency o the drawn wr~ppir~g ~aper, and ~uttlng the wa applng pzaper to ~ r~uired length, ~::onv~syor 3 for trans~rring t~le aut length of wrapplng p2lper to below ~he coil C, win~lng roll 4 for windiny th~r~on the cut 15 length o~ wrappi.n~ p~per, windln~3 mechanl~m S, m~ans or re~tralning the t~ nd o~ th~ cut lenqth of wrappln~
p~per, e . g D a BUCt~ belk 3a o the a~orem~nt~ oned con-~rRyor 3 in the pre~ent c~a~ uspen~{t~n arm~ 7 ~or ~upportlng in posltion the afor~m~ntioned windlng roll 4, 3upport~ng 20 trolley 8 to whis:~h ~h~ nrm~ 7 axel attach~cl ~a~t, ~tc.
Th0 method of wr~pplng a~cordlng to $he pr~ent invention will be de~rihed below with r~f~r~nGa to the construc~tion of 'ch~ px~n~ ~Tn~dimsnt. It ~should be noted her~ that Por 'che m3thod o~ t~is invention, u~e ~:~ th~
~5 apparatus o~ thi~ invention i~ not an es~nticll re~ ixem2nt.
In th~ storage 1 :for wrapping p~per rolls ~ a plurali~y o~ wrayping pap~ o~ v~ry~Lng wldt h~ a~. dlsposed in
3~
~uch a mannar ltha~ any one o~ th~ roîl~ may b~3 piaked out a~ wlll to plly o~ the wr~p~ paper. From the plurality o~ rvlls ~, onQ partiaul~x roll of wrapping paper having the requir~(l wldtll l~ s~le~Qd and rotated to pay of f the 5 wrappinS~ papur. The wrapplng pap~r thu~ drawn ou1: of the roll i8 c:ut to a l~ngth ~::onforming to the length of thQ
~utar perlphery oE th~ coil C, the articla ~ub~ected to wra~ping ln thi~ c~3. This work ~orms the first step of the wrapping operation . B~low th4~ ~torag~ 1 for wrapp~ng 10 paper rs;~ everE!l well~known endles~ bel ~ con~a~ning ~uction holQ~ are axrayed on a wrapping p~per drawing aonveyor lO. The le~ding erld v the wrapping papex P placed on th~ b~lt3 19 advan~d B18 ~uc3ced to t.he bolt~ hy the ~uation box 11 and a blower not ~hvwn ln th~ drawlng until 15 it 1~ cau~ht fa~t b~tw~en forw~rding n:Lp roller~
ThQ l~ading end o~ th~ wrapping paper P i~ pa~ed thrsugh a mechanism 13 ~or correctlng th~ ~urlins~ tenderlcy o~ wra~pp~ ng pap~r ~nd dis~harg~ nlp rollers 14 and d~liv~red - to the ~ub~equsnt ~aed oomr~yor 3~ On r~aeipt o~ a signal 20 ~rom a papQr l~sngth ~n~iny mech~nism which 1~ omitted f rom the drawlng, a cu~ter 15 cut~ the wrapping pap~r P to a length conformlng to the length of outex perLphery of the coil C. The cut length of wrapplng paper P 1~ mounted a~
~tratche~ t:o ~ull l~rlgth on kh~ con~eyor 3 ~nd advanced 25 thxough the ~3lat conv~yox 3b to ~ po~ition balow th~ coil C~
Th~ meahani~ms or ~eed~ ng ~1~ wrappinq E3aper and for correc~1ng the auxlin~ ~end~3nc:y o~ wxapping paper paia o~f tbo aoll v~ll be de~Q~ibe~d ln ~ot:~ll a:~t~rward. Ir~ th~
pxe~ent em~odiment, l:h~a m:l~dlemo~t of th~ intçrYaln b~?twaen ~1~ p~rorated parall~l b~lt~ 3a o th~ c~onve~or 3 1~ ~ylven a ~r~s~ter lateral . ~l~m~nsio~ to pQrmit cli~E-ogitio~ the S ~lnt c~onvay~r 3h which ~rvQ~ as a path ~r aonveyarlce o~
th~ coil C. optlonallly the whol~ cc~nv~3yor 3 may b~ kept at a low~.rerl l~,ve~l by msan~ of a hydra~lio cyll~der 16 durlng th~ aonvey~nc~ of ~h~ a~ll C.
ourlng th~ en~ry o~ khe cut lengl:h of wraE-L~ing p.-lp~r P, ~lnce ~he conve.yor 3 ~f~ }cept ~t it~ normal Rï~vat~ level the ~ut l~ngth o~ wr~p~lng ~a~ex a~an-~e~ dir~tly below coll C.
The winding roll 4 is located immediately i~ front of the endless belts 3a of the conveyor 3, namely at a po~ltlon ~llg.htly for~ard ~rom th~ po~ition direc~ly below th~ aent~r o th~ ~oil C. Thi.~ wlndin~ roll 18 ~otatlonally driven ~y tho windisl~ m¢a~n~sm 5 thro~gh thQ m~dlum o~ a clutc~ he w~ndin~3 mechanl~m 5 i.s provided wlth a wall-known contact type guldt3 belt mechani~m 5a in order t~ set the l~adlng end of th~ a~t length of ~rap2~ng paper P t~ th~ p~riph~ry of the wint~lng roll ~ ortler f~r th~ yu.tde b~lt ~ech~nl~m to he retracte~ down~ .rdly while not 1n u~, lt i~ adaptt~d ~ be rotat~ by th~
hydxaulia cylind~r 17.
tn r~pon~e~ to th~ l~$uan::~ of ~ n~l indlcating the' arriYal o~ the ctst l~tlgth o wrapplng paper P on the con-veyor 3 ox ln aacordance with tlle ~hit o th~ aonveyor 3 3~
~rom ~cho lowe~ r~ at~d po~ltlon to the po~ltlor~ dlca~ed by a co~ltlnuc)u-~ llne ln ~he drawirlg or th~ rotary elavat~on of the ~uisle b~3lt m~3chanlsm 5a, th~ windlng mQchanism S
ro1:at~onalLy drive~ the w~ndin~ rc-ll 4. Wh~ll the leading S end of ~he wrapp~ ng pap~3r P mounted on th~ con~yor 3 hlt9 Qith~r ~h~ ~elt o~ th~3 guldQ b~lt m~ahani~m 5~ or th~
wind~ng roll 4; ~ diately drawn in be~ween the belt an~ the windiny roll 4 ~nd is gradually tak~n up.
Th~ w$nd~n~ mechanism 5 i~ E~topped as ~oon as it i~
det~c:tad tha thQ ta~l ~nd o~ the cut l~ngth o~ ~7rapp~ng paper P ha~ raached a ~osltion ~ htly in ~ront o tha position diractly b~low the ae~ter of the coil C~ fle~ore the stopping of the winding mechanism 5, the guide belt m~ahani~m 5a,which ha~ ful~ d it~ ob~ect o~ wind~.n~ th~
wra~pin~ pay~r on the winding roll,i~ ~ow~red by the hy~raul~a cyllnder 17. The re~r part of th~ cut l~ngth o~
wrapping paper P~which r~main~ on th~ conveyor 3,1~ ~ecur~d in p~ition on the aon~eyor owlng to the suction whlch i~
e~ect~d by ~he p~r~lL~l belt~ 3~.
Wh~l~ the wlndlng ~eahanl~ 5 cea~e~ to wind th4~ wrap-p~ng p~per on th~ windlng roll, lt ~utomat~c~lly r~leas~s the clutch which lnt~rlo~s th~ meahani~m wlth ths w~ndinq xoll ~. ~In the case o~ ~ mag~ti~ powder clut~h, it ls causod to gener~te ~ b~ki~g motion by weak~ninq the control current ~owing therethrough). Con3equently, ~h~ w~nding roll 4 i~ now fr~e to be rot~ted. Then, a pinion 19 me~hed with a rack lg i~ rotation~lly drlven by a motor 20 ~o a~
3~
tc~ ~or:~t~act the oppo5i'ce~ :~u~p~n~ion arm~ 7 which æuppo~t the wind:Lng roll 4 at the low~r ~nd~ thexeof and enable th~ wind~ng roll 4 to be~ ~ov~d vert~ally~, As th~ winding roll 4 i~ e~evate~d ill c:onsequenca of the rotat~on o~ th~
5 pinion 19, th~3 cu~- ler~gth of wrapulng pap~r ~ which ha~ lt~
tail end restrair~d i~ dra~n toward it3 talil er~l and gradually paid of~ th~ roll 40 q~ portion of th~a wra~plng papsr P thu~ paid off ~h~ ~oll i~ gradu~lly drs.ped ol~ th~
lower ~ide o~ ~che c~oil l~ in the~ let h~l of th~ cli~gram 10 of ~igure 1. When th~ winding xoll 4 rQache~ th~ position ~orr~ omling to th~3 center of tho coil C, th~ ~upport~nq trc~lley 8 which ~upport~ th~ su~pe~lon arm~ 7 in po~it~ on and which i3 oarriod on hori~ontal rail3 21 i8 advanced to ~he right ~ith r~;poct to the diagr~m o~ ure 1. Aft~r 15 tho windinq roll 4 ha~ come into contac~ with the surfac~
of the coil C, it iu r~volved around the ~urface of th~
Coil C as it rotates about its own axis, with the result that the w~nding rol~ 4 do3cr~b~ a locu~ 100 alony wh~ch the wrapped paper pai~ off the windiny roll 4 i~ drapsd on th~ ~uracQ
of the coil C~ Thi~ drap ~g of ~ho wrapp~ng paper on the metal coil i~ effocted smoo~hly by controlling, with the aid of a computer, the motor 20 for vertical motion of the - winding roll and a motor 2~ for the lat~ral motion on the trolley 8 ir~ accorda3~ wlth ~he diamf~ter o the coil C
25 being wrapped~ It may ot~srwi~e be eEect~d moxe ~imply :by eleYating th~ wia~ding roll 4 wichout any lalteral shift of position to a lev~l ~lightly high~r than ~he apox o~ the 3~c coil C a~d ~ub~equ~tly advancl~g lth~ winding roll 4 ~tralght in th~ horizontal dlr~ction, and lowering it ~traight ~n ~hG!I v~rtical line, 80 a~ ~o describe a locu~
101~ Ev~n ill the ca~ o~ th~ ls3cu~ 100, the windlng rc~ll 5 4 may be r{3v~:31v~d aroun(3 ~ha c:oll C~ at a distance from t~e surfac~ o~ th~ cc):~l C ln.~3~ead o~ b~ing kept ~n contaot with the ~urfac~.. Th~ ~tren~th wlth which thQ
wrapp~ ng paper P is wourldL sn th~ c:c>ll C can b~ ~uitably adju~t~d b~ the braking (~rls;:t~onalj forc~ ~xarted on th~
rot~tion of the win~lin~ roll. For the purpo3~ of keeying the leadin~J ~n-~ of t~.e wrapping p~pQr P fa~t to the winding rvll, he knowll techniq[ue of per~orat:ing ~mall hole~ in the!
win~llncJ roll and ca~lng th~3 leadlng ~sld oE wrap~in~ paper to b~ drawn fast to the wi~ing roll by virtu~ o suation may b~ advantageously ~dopted.
Wl~en the win~ing xoll 4 ha~ rea~h~d or advanced slightly pa~t th~ ell~ poln~ o the aforemQIltioned loc~3 100 or 101, the cut le~th 4f wrapplnq pap~r i~ aompl~t~ly sepa~at~ ro~ tl~e w~n~lng r~ll 4~ The winding roll 4 is then returned to its original position. At this point, th~ le~ding ~n~ of the c~t length of wrappin~ paper ~eparated from an~ hung dvwn the w~ndinq roll 4 and ~h~ tail end o the wra~ping paper ~till draw~ fast to the conYe~or 3 are join~d to ~ach other ~n the outer perlphery of the ~oil C.
In tha pr~ant embodima~t, th~ draping o wrappin~
pap~r on th~ lower hal portion nnd the w}lole upper portion o~ the out~r pex~phery o th~ ~oil ~ ls accotnpll~h~l ~2~384 complet21y automa'cia~llyO The~ w~xk Q~ ~oin~ ng the leadin~
and tail 13nd~ o~ t:h~ csu~ length o~ srapping pap~r th~eby ~ect~llg thQ draping o 'che wr~ppirlg- pap~r on the xemain~
in~ lowex hal~ portion i~ carxiea o-lt ma~ually. The portio~
of the oper~tior~ which 1~ p~rformed manually can be mech~nized by ir~corpor~t~ng a ~echa,ni~ whicl~ 1~3 capable of applylng ~ doublo-faced adhe~lv~ tsp~ along the tail end Dl~ th~ wrappi~g paper c~n the conv~yor 3, ~cooping ~h~ t~ 1 6~nd, applying it to th~ surfsc~ of thç~ aoll with I h~ aid of the adhesive tapE~, superposing thQ l~adlng ~nd o~ th~
wxapplng pape~r ~usp~nded fro~n a~ov~ over the l~dincJ end, and jo~ nlnq the ~wo ~nds through the medium oE the adh~iva t~p~, The conveyor 3 or ~eeding the ~:ut length of wrapping pap~r need not b~ what i~ normally call~d a con~éyor hut may be a flat surface adapted to allow the wrappmg paper to slide thereon.
In fact, any device can be used on the sole condïtion that-it is capable of maintaining the advancing cut len~th of wrappina paper in a flattened state. In the embodiment describèd above, th~ re~tralnt of th~ tai~ end o th~ cut length o wrapping p~peP i~ ac~o~pll~hOEd by th~ ~uctlon o ~he wrap-pi~g pa~er by the ~onv~yor or ~h~ tight adhe8ion o~ the coil itsel~ to the ~2c~iv$n~ ~eat ~or th~ slat conveyor~
ou5 o~her means can b~ used " ~uGh a~ a suct~on mean~
- 25 and pressur~ mean~ ~h~h opar~te ~epara~ely from the convcyor.
The ~upporti~g troll~y 8 ~eQd ~ot be what iB generally 3~3~
~ referred to as a-~olley but may be a member adapted -to slide on tho rail~ F~rtht~r, th~ manner ln whlch the rail~ are ~upporte~ 1~ po~ition may b~ ~olec~e~ to ~ult thQ c~n~ltion~
o~ the work ~ita~ Whother the ~ntlro ~pparatus i~ ad~pted for comple~e ~erlal control or part o~ ~h~ apparatu~ i9 sub~ect to ~ontrQl by comma~d~ uad ~y an op~rator statiol-~d to over3~e th~ ~p~xa~lon i8 a ma~tt~r ~o ~e determined depending on shop conditions.
op~on~lly~ th~ ~torag~ 1 for wrappiny paper rolls may ~e de3i~n~d in a rotary ~y~tom as indi~ated ~ 1' in F~gura 2, ~hich ~h~ a xotary ~ttorage ha~ing a plurality of wrapping paper rolli~ ~ o~ vax~ylng wid~hs di~po~d a~
I regula.rly s~acatl circuTaft~r~n~iall~ on a singl~ ~ircle. Of the ~lurality of roll~ 9 of w~pping paper, ~he par~icular ~S on~ haviny a re~uired width i~ brov.ght to the lowe~t poin~
o~ th~ ~ircl~ an~ tll~ ~rappiny paper is drawn out of thi~
particular roll~ Each roll 9 of wrapp~ng p~per i~ ~upp-~rt~rl in position by a bearing which is provided with a well-known frictional brakiny pulley 24. A stationary bel-t 23 for br~k~ng i~ pa.s~ arou~d the pulley~ 24. Owln-y to thi~
statio~r~ b~l~ 23, ~11 th~ pulloys ~xcept for the ~ulley at the lowe~t polnt ar~ frlct~onally restrained.
Opposed stationary pulleys 25 fasten the opposite ends oE
the braklng b~lt 23 an~ ~nabl.e the belt 23 to ~ tiyhtened or ~lacken~a as raqulr~d.
After the particular roll ~ of wrapplng pa~r havlng a r~quired w~d~h ha~ b~en fixe~ at th~ low~t ~lnt o~ the 31~3~
circle o~ th~ ~ot~xy ~axaga 1 ', th~ drlven pulle~t ~ide ena~
of th~ dri~;ng ~ndl~ss helt 26 lying belo~ this roll 9 is elevated and brought ~-to contact with the respective pulley 2~ as 3hown by a contlnuous lin~ in the ~r~wing, by ;n~ans oE th~
S driving me¢hanlsm,wh1~h i~ not ~hown in the drawingO When the drivi~g b~lt ~6 ~ æu~s~uently set rota~ing, ~he roll 9 o~ wrappiny pap~r at th~ lowe~t point ~ rotatosl in th~
direct~on of unwir~d~ng the w~a~ping paperO T~e ls~ad~ng end of the wrapping paper P whlah h~g~ down from th~ roll g come~ to re~t on ths ~ur~a~Q .of the 100r. On t~ floo~
~urface ~r~ ~e~eral parall~l endl~ bs~lt~ running tog~th~r.
Thu~, th~ l~ading end of thQ wrapping paper P held on tl belt~ i~ adva~ced to th~ 1~ft re1a~i~e ~o t~le dla~am o~
~igure 1~ Si~ce a ~uction b~x 11 i8 located be10w tlle b~lt~ 10, th~ wrap~ing paper P ~ held in inti~ate con~act with th~ belt~ 10 and~ in tha~ state, i~ advanc~d a~
desar1b~d aboYe.
At~r th~ portio~ of ~x~pping paper P ~aid off ~he ro11 9 has bean cut to a required 1ength, the fo110wing portion of wrap~in~3 paper i~ ~ak~n up again o~ tbe roll g. Thi~
rewlnding of the re~nainis~ ~ortlon o~ wrapuing pap~r is accomp1ished by xokat{ng in tll~ reYer~ d1r~stion tlle ~n~-less belt 26 whlch ha~ ~een used formerly in cau~ing the wr~pping paper to ~e unwound ~rom k~a roll. In thi3 ca.5e, the rem~i~ln~ portion ~ wra~ping paper is rewound witl~
a~p1e t~htne~ ~y c~using th~ retaining ro11~r~ 2'7 at the,l ' leading ~nd~ of the osc1~1a~ion arms 21a to b~ pre~se~
~ 8~
a~air~'c th~ periph~sral ~uraca ~ he roll 9 of wra~plng papar and actuaking th~a toul::h xoll~r~ of th~ w~ n~ing mach~n~. Nc~rMal~.y, the r~tainis~g roll~r~ 27 ~sLre h~ld in a lowered le~rel c~ to lthe upp~r ~u:~a::e of he convQyor 10, 5 r~ady or u~. Of cclur~e, the oscil~tion a~ms 27a are located at ~h~3 out~lde~ o~ the~ f~3cling mechanis~!l and the ~ndle~ belt 2~ ~ o~cillal:ed at the poF3ition ~ which th~
roll 9 o~ wxaE)pin~ paper collide~ ~ith th~ edye pulley 24.
Thu~, ~o hindra~c~ i~ of~ere~ to th~ e~try or departure of the wrapp~n~ p~x P. Tlle pla~ ~iew depicking ~i~
cond~ti~n is omitt~d.
Now, the mechanism which causes the wrappinq paper drawn out of the coil in the storage 1 or 1' and tending to curl up-to be placed as stretched to full leng-th on the drawing conveyor, corrects t~le curlLng t~ndency o~ the wrapping p~ per, an~ ~orwards it in the ~or~ o~ a Elat wrapping paper will b2 de~crlbad with reference to the embodiment`s of Figures 4-/.
In a ~on~el~tio~al automatlc fe~d ~vic~, in ora~r that a wrapping paper drawn out from a small roll Y of wrapping paper and strongly tending to curl up may be stretched flat and cut to a desired lengt}l, ~he operator ha3 been c~l~pelled to ke~p the l~adin~ end o~ ~he wrappiny pap~r pre~$ed a~ain8t th~ ~uc~on ~on~eyorO The work of ~venly pressin~
acJain~t the conveyor th~ leading ~nd o~ a wrappi~g pap~r 900 to 1500 mm ln w:~d-~h and haYin~ a high curling t~n-lency, ¦
lcult arl~ c:o~plicat~d to roanu~lly p~rform. In this 3~3~
respect, therefore, the conventional automatic Eeed device has hardly deserved the designation "automatic device".
The embodiments of Figures 4-7 adapt the rotary storage for wrapping paper rolls illustrated in Figure 2. In Figures 4-7, the wrapping paper roll 9 is illustrated as positioned at the lowermost ]evel~ Below the roll is located an extraction conveyor 28, which precedes a mechanism 13 for correcting the curling tendency o-f wrapping paper and a cu-tter 15. Of the plurality of wrapping paper rolls of varying widths regularly spaced circumferentially on a circle, the roll of desired width is moved to the designated position, i.e. the lowermost level as described above. As means for advancing the wrapping paper unwound from the roll 9, the present embodiment makes use of a movable inclined conveyor 28 and a suction conveyor 10' adapted to ru~ at a lower speed than the inclined conveyor 28.
The latt~r con~0yor i~ ~ub~tant~ally ~he ~ame a~ the ~x-traction oonveyor 10 illu~tr~t~d in Plgur~ 30 The movabla inclin~d con~yor 28 fulfill~ th~ fun~tton o~ frictional~y driv~ng a~lan i~ ~he downward direction ths leading end oP th~ portion of the wrapping papsr P
unwound ~rom ~hs roll 9 and ~ending to ~url up, ~pecifically at the illustrated po~ition. Whlla the roll 9 o~ wrapping -15- ~I !
3L'~L3F~
paper is in process of displacement to and from the lower-most position, a part of the movable inclined conveyor is retracted into the position shown in dash-dot lines.
The movable inclined conveyor 28 in the embodiment of Figures 4-6 consists of two parts, i.e. a belt conveyor 28a having a relatively small angle of inclination and a sharply inclined belt conveyor 28b which is connected to the rear end of the aforementioned belt conveyor 28a, each comprising a plurality of endless belts. These two conveyors are connected to each other by a common combination rotary drive shaft and oscillation shaEt 29. A driven pulley 12a of the conveyor 28a concurrently serves as an upper movable roller 12 (Fiyure 1) of a pair of side nip rollers of the curl correcting mechanism 13. Driven pulleys 34 of the sharply inclined belt conveyor 28b are idly ~oined to the movable shaft 33 and allowed to rotate freely. The conveyor 28b can be moved either to approach the wrapping paper roll 9 (as shown in unbroken lines in Figure 43 or to assume its waiting position ~indicated 20 by the dash-dot lines in Figure 4). Thls shift of the position of the conveyor 28b is effected by swinging supporting arms 32 illustrated in Figure 6. The drive mechanism for this pulley 34 is omitted from the drawing.
As is clear From Figure 6, the conveyor 28b in the present embodiment has contact rolls 35 interposed 1' between the parallel belt pulleys 34. These rolls 35 are ' invariably driven by the shaft 33 and a drive mechanism 36 and the pulleys 34 are freely rotatable around the shaft 33.
When the contact rolls 35 are rotated at a suitable speed and held lightly in contact with the wrapping paper roll 9 (~s illustrated in Figures 4-5~ and the belt conveyors 28a, 2~b are rotated at a relatively high speed by the rotation of the shaft 29 and that of the drive mechanism 37, the leading end of wrapping paper which has separated from the surface of the wrapping paper roll 9 and advanc~d in the unwinding direction is scraped off the roll 9 by the contact rolls 35 and con3equen~1y ~oYed onto tho ~urfac~ of the conv~yor 28~. A~ the rotation o~ ~he roll g in th~ unwind~ng direation proc~eds, the leading e~d of the wrapping paper P
i8 ~ictio~ally drl~en a~d mov~d from the conveyor 28b ~o the conveyor 28~ and ~hen advanc~d toward the pa~ of nip rollers formed by the lef-tmost pulleys of the upper and lower con~9yor~ ~a, lo ~ . ~eanwh~ le, even when the l~a~ing end of ~h~ wrapping pap~ P tend~ to ~url ~p ~nto a loop owing to ~he curling t~ndency o~ th~ p~per, ~t i~ continuously elongat~d bec~u~e th~ inali~d conveyor 28 runs at a high~r spsed than th~ un~indi~q sp~ed of w~app~ng paper and the ~peed o the ~ct~n ~o~veyor lOZ. In the thu~ cont~-nuously elongate~ ~tate, thR lea~lng ~nd of wrapping pap~r iB advanced toward ~he lower ~nd of the incllned con~yor 28, name~y toward th~ lower ~urfac~ o~ th~ pull~y 12a.
After pa~ing the nlp roll~r~ whlcll concurr~ntly serve a~ thq ~ull~y~ for th~ upper and lower conveyors, tl~le~
lead~ng end of wrappl~ paper P continue~ to ad~ance intol th~ curl corre~tlng m~ah~ni~m 13, ther~ to be glven reYer~e 3~
strain and rendered substantially flat. The curl correcting mechanism 13 in this embodiment is provided with a guide plate 30 ~Figure 5~, a curl removing member 31, and a mechanism (not shown) Eor imparting a vertical motion to the guide plate 30 and the curl removing member 31. With these two parts or~ginally located at the position indicated by the dash-dot line, this mechanism advances the lead~ng end of wrapping paper P along the guide plate 30 and inserts it between the nip rollers 14. Subsequently, i-t elevates the guide plate 30 and the curl removing member 31 to a level at which they are shown in lines in ~igure 5 and thus causes the curl removing member 31 to rub the wrapping paper P to impart reverse strain theretoO
In the presen-t e~bodiment, the pulley 12a of the inclined conveyor 2~ is vertically movable, so -that, after the leading end of wrapping paper P has passed thereunder, it is lowered to the level indicated by the dash-dot line in Figure 5 and used as a nip roller. In that case, the drive mechanism 37 for the inclined conveyor 28 is idly rotated.
After the unwound portion of wrapping paper has been relieved of the curling tendency and cut to a required length, the remaining portion of the wrapping paper separated from the roll is taken up again on the roll by rotating the roll in its winding direction in exactly the same way as the conventional device. When a steel coil C of a different~
width is received, the in~lined conveyor 28b is rotationall~
retracted around the center of the shaft 29 and it is brought bacls to its original position after a new roll 9 of wrapping paper having the 3~3~
required wldth ha~ been moved to the designatsd position.
If the plurality of rolls 9 of wrapping paper are coaxially arrayed to allow a selected one of the rolls to ~e moved axially to the designated posi-tion, the inclined conveyor 28, as illustrated in Figure 7, has no use for the above-described arrangement. In the embodiment '' of Figure 7, pulley 38 of the inclined conveyor 28 is stationary and another pulley 34 thereof is slightly swingable in the direction of the arrow to permit adjustment.
~lnce tha low~r ~urfa~ of the ~oreme~tion~d ~ulley 38 is clos~ to tn~ upper ~urfac~ of the s~ction conveyor 10', the lea~ing end of ~rapplng pap~r P ~hich has passed through the gap be~ween tl~ op~o~d ~urac~ a~ly ~ucked tuward the ~uction ~nYayor lV' ~ and, ~n that ~tate, fed ln~o lS the ~url correcting me~ha~ism 130
~uch a mannar ltha~ any one o~ th~ roîl~ may b~3 piaked out a~ wlll to plly o~ the wr~p~ paper. From the plurality o~ rvlls ~, onQ partiaul~x roll of wrapping paper having the requir~(l wldtll l~ s~le~Qd and rotated to pay of f the 5 wrappinS~ papur. The wrapplng pap~r thu~ drawn ou1: of the roll i8 c:ut to a l~ngth ~::onforming to the length of thQ
~utar perlphery oE th~ coil C, the articla ~ub~ected to wra~ping ln thi~ c~3. This work ~orms the first step of the wrapping operation . B~low th4~ ~torag~ 1 for wrapp~ng 10 paper rs;~ everE!l well~known endles~ bel ~ con~a~ning ~uction holQ~ are axrayed on a wrapping p~per drawing aonveyor lO. The le~ding erld v the wrapping papex P placed on th~ b~lt3 19 advan~d B18 ~uc3ced to t.he bolt~ hy the ~uation box 11 and a blower not ~hvwn ln th~ drawlng until 15 it 1~ cau~ht fa~t b~tw~en forw~rding n:Lp roller~
ThQ l~ading end o~ th~ wrapping paper P i~ pa~ed thrsugh a mechanism 13 ~or correctlng th~ ~urlins~ tenderlcy o~ wra~pp~ ng pap~r ~nd dis~harg~ nlp rollers 14 and d~liv~red - to the ~ub~equsnt ~aed oomr~yor 3~ On r~aeipt o~ a signal 20 ~rom a papQr l~sngth ~n~iny mech~nism which 1~ omitted f rom the drawlng, a cu~ter 15 cut~ the wrapping pap~r P to a length conformlng to the length of outex perLphery of the coil C. The cut length of wrapplng paper P 1~ mounted a~
~tratche~ t:o ~ull l~rlgth on kh~ con~eyor 3 ~nd advanced 25 thxough the ~3lat conv~yox 3b to ~ po~ition balow th~ coil C~
Th~ meahani~ms or ~eed~ ng ~1~ wrappinq E3aper and for correc~1ng the auxlin~ ~end~3nc:y o~ wxapping paper paia o~f tbo aoll v~ll be de~Q~ibe~d ln ~ot:~ll a:~t~rward. Ir~ th~
pxe~ent em~odiment, l:h~a m:l~dlemo~t of th~ intçrYaln b~?twaen ~1~ p~rorated parall~l b~lt~ 3a o th~ c~onve~or 3 1~ ~ylven a ~r~s~ter lateral . ~l~m~nsio~ to pQrmit cli~E-ogitio~ the S ~lnt c~onvay~r 3h which ~rvQ~ as a path ~r aonveyarlce o~
th~ coil C. optlonallly the whol~ cc~nv~3yor 3 may b~ kept at a low~.rerl l~,ve~l by msan~ of a hydra~lio cyll~der 16 durlng th~ aonvey~nc~ of ~h~ a~ll C.
ourlng th~ en~ry o~ khe cut lengl:h of wraE-L~ing p.-lp~r P, ~lnce ~he conve.yor 3 ~f~ }cept ~t it~ normal Rï~vat~ level the ~ut l~ngth o~ wr~p~lng ~a~ex a~an-~e~ dir~tly below coll C.
The winding roll 4 is located immediately i~ front of the endless belts 3a of the conveyor 3, namely at a po~ltlon ~llg.htly for~ard ~rom th~ po~ition direc~ly below th~ aent~r o th~ ~oil C. Thi.~ wlndin~ roll 18 ~otatlonally driven ~y tho windisl~ m¢a~n~sm 5 thro~gh thQ m~dlum o~ a clutc~ he w~ndin~3 mechanl~m 5 i.s provided wlth a wall-known contact type guldt3 belt mechani~m 5a in order t~ set the l~adlng end of th~ a~t length of ~rap2~ng paper P t~ th~ p~riph~ry of the wint~lng roll ~ ortler f~r th~ yu.tde b~lt ~ech~nl~m to he retracte~ down~ .rdly while not 1n u~, lt i~ adaptt~d ~ be rotat~ by th~
hydxaulia cylind~r 17.
tn r~pon~e~ to th~ l~$uan::~ of ~ n~l indlcating the' arriYal o~ the ctst l~tlgth o wrapplng paper P on the con-veyor 3 ox ln aacordance with tlle ~hit o th~ aonveyor 3 3~
~rom ~cho lowe~ r~ at~d po~ltlon to the po~ltlor~ dlca~ed by a co~ltlnuc)u-~ llne ln ~he drawirlg or th~ rotary elavat~on of the ~uisle b~3lt m~3chanlsm 5a, th~ windlng mQchanism S
ro1:at~onalLy drive~ the w~ndin~ rc-ll 4. Wh~ll the leading S end of ~he wrapp~ ng pap~3r P mounted on th~ con~yor 3 hlt9 Qith~r ~h~ ~elt o~ th~3 guldQ b~lt m~ahani~m 5~ or th~
wind~ng roll 4; ~ diately drawn in be~ween the belt an~ the windiny roll 4 ~nd is gradually tak~n up.
Th~ w$nd~n~ mechanism 5 i~ E~topped as ~oon as it i~
det~c:tad tha thQ ta~l ~nd o~ the cut l~ngth o~ ~7rapp~ng paper P ha~ raached a ~osltion ~ htly in ~ront o tha position diractly b~low the ae~ter of the coil C~ fle~ore the stopping of the winding mechanism 5, the guide belt m~ahani~m 5a,which ha~ ful~ d it~ ob~ect o~ wind~.n~ th~
wra~pin~ pay~r on the winding roll,i~ ~ow~red by the hy~raul~a cyllnder 17. The re~r part of th~ cut l~ngth o~
wrapping paper P~which r~main~ on th~ conveyor 3,1~ ~ecur~d in p~ition on the aon~eyor owlng to the suction whlch i~
e~ect~d by ~he p~r~lL~l belt~ 3~.
Wh~l~ the wlndlng ~eahanl~ 5 cea~e~ to wind th4~ wrap-p~ng p~per on th~ windlng roll, lt ~utomat~c~lly r~leas~s the clutch which lnt~rlo~s th~ meahani~m wlth ths w~ndinq xoll ~. ~In the case o~ ~ mag~ti~ powder clut~h, it ls causod to gener~te ~ b~ki~g motion by weak~ninq the control current ~owing therethrough). Con3equently, ~h~ w~nding roll 4 i~ now fr~e to be rot~ted. Then, a pinion 19 me~hed with a rack lg i~ rotation~lly drlven by a motor 20 ~o a~
3~
tc~ ~or:~t~act the oppo5i'ce~ :~u~p~n~ion arm~ 7 which æuppo~t the wind:Lng roll 4 at the low~r ~nd~ thexeof and enable th~ wind~ng roll 4 to be~ ~ov~d vert~ally~, As th~ winding roll 4 i~ e~evate~d ill c:onsequenca of the rotat~on o~ th~
5 pinion 19, th~3 cu~- ler~gth of wrapulng pap~r ~ which ha~ lt~
tail end restrair~d i~ dra~n toward it3 talil er~l and gradually paid of~ th~ roll 40 q~ portion of th~a wra~plng papsr P thu~ paid off ~h~ ~oll i~ gradu~lly drs.ped ol~ th~
lower ~ide o~ ~che c~oil l~ in the~ let h~l of th~ cli~gram 10 of ~igure 1. When th~ winding xoll 4 rQache~ th~ position ~orr~ omling to th~3 center of tho coil C, th~ ~upport~nq trc~lley 8 which ~upport~ th~ su~pe~lon arm~ 7 in po~it~ on and which i3 oarriod on hori~ontal rail3 21 i8 advanced to ~he right ~ith r~;poct to the diagr~m o~ ure 1. Aft~r 15 tho windinq roll 4 ha~ come into contac~ with the surfac~
of the coil C, it iu r~volved around the ~urface of th~
Coil C as it rotates about its own axis, with the result that the w~nding rol~ 4 do3cr~b~ a locu~ 100 alony wh~ch the wrapped paper pai~ off the windiny roll 4 i~ drapsd on th~ ~uracQ
of the coil C~ Thi~ drap ~g of ~ho wrapp~ng paper on the metal coil i~ effocted smoo~hly by controlling, with the aid of a computer, the motor 20 for vertical motion of the - winding roll and a motor 2~ for the lat~ral motion on the trolley 8 ir~ accorda3~ wlth ~he diamf~ter o the coil C
25 being wrapped~ It may ot~srwi~e be eEect~d moxe ~imply :by eleYating th~ wia~ding roll 4 wichout any lalteral shift of position to a lev~l ~lightly high~r than ~he apox o~ the 3~c coil C a~d ~ub~equ~tly advancl~g lth~ winding roll 4 ~tralght in th~ horizontal dlr~ction, and lowering it ~traight ~n ~hG!I v~rtical line, 80 a~ ~o describe a locu~
101~ Ev~n ill the ca~ o~ th~ ls3cu~ 100, the windlng rc~ll 5 4 may be r{3v~:31v~d aroun(3 ~ha c:oll C~ at a distance from t~e surfac~ o~ th~ cc):~l C ln.~3~ead o~ b~ing kept ~n contaot with the ~urfac~.. Th~ ~tren~th wlth which thQ
wrapp~ ng paper P is wourldL sn th~ c:c>ll C can b~ ~uitably adju~t~d b~ the braking (~rls;:t~onalj forc~ ~xarted on th~
rot~tion of the win~lin~ roll. For the purpo3~ of keeying the leadin~J ~n-~ of t~.e wrapping p~pQr P fa~t to the winding rvll, he knowll techniq[ue of per~orat:ing ~mall hole~ in the!
win~llncJ roll and ca~lng th~3 leadlng ~sld oE wrap~in~ paper to b~ drawn fast to the wi~ing roll by virtu~ o suation may b~ advantageously ~dopted.
Wl~en the win~ing xoll 4 ha~ rea~h~d or advanced slightly pa~t th~ ell~ poln~ o the aforemQIltioned loc~3 100 or 101, the cut le~th 4f wrapplnq pap~r i~ aompl~t~ly sepa~at~ ro~ tl~e w~n~lng r~ll 4~ The winding roll 4 is then returned to its original position. At this point, th~ le~ding ~n~ of the c~t length of wrappin~ paper ~eparated from an~ hung dvwn the w~ndinq roll 4 and ~h~ tail end o the wra~ping paper ~till draw~ fast to the conYe~or 3 are join~d to ~ach other ~n the outer perlphery of the ~oil C.
In tha pr~ant embodima~t, th~ draping o wrappin~
pap~r on th~ lower hal portion nnd the w}lole upper portion o~ the out~r pex~phery o th~ ~oil ~ ls accotnpll~h~l ~2~384 complet21y automa'cia~llyO The~ w~xk Q~ ~oin~ ng the leadin~
and tail 13nd~ o~ t:h~ csu~ length o~ srapping pap~r th~eby ~ect~llg thQ draping o 'che wr~ppirlg- pap~r on the xemain~
in~ lowex hal~ portion i~ carxiea o-lt ma~ually. The portio~
of the oper~tior~ which 1~ p~rformed manually can be mech~nized by ir~corpor~t~ng a ~echa,ni~ whicl~ 1~3 capable of applylng ~ doublo-faced adhe~lv~ tsp~ along the tail end Dl~ th~ wrappi~g paper c~n the conv~yor 3, ~cooping ~h~ t~ 1 6~nd, applying it to th~ surfsc~ of thç~ aoll with I h~ aid of the adhesive tapE~, superposing thQ l~adlng ~nd o~ th~
wxapplng pape~r ~usp~nded fro~n a~ov~ over the l~dincJ end, and jo~ nlnq the ~wo ~nds through the medium oE the adh~iva t~p~, The conveyor 3 or ~eeding the ~:ut length of wrapping pap~r need not b~ what i~ normally call~d a con~éyor hut may be a flat surface adapted to allow the wrappmg paper to slide thereon.
In fact, any device can be used on the sole condïtion that-it is capable of maintaining the advancing cut len~th of wrappina paper in a flattened state. In the embodiment describèd above, th~ re~tralnt of th~ tai~ end o th~ cut length o wrapping p~peP i~ ac~o~pll~hOEd by th~ ~uctlon o ~he wrap-pi~g pa~er by the ~onv~yor or ~h~ tight adhe8ion o~ the coil itsel~ to the ~2c~iv$n~ ~eat ~or th~ slat conveyor~
ou5 o~her means can b~ used " ~uGh a~ a suct~on mean~
- 25 and pressur~ mean~ ~h~h opar~te ~epara~ely from the convcyor.
The ~upporti~g troll~y 8 ~eQd ~ot be what iB generally 3~3~
~ referred to as a-~olley but may be a member adapted -to slide on tho rail~ F~rtht~r, th~ manner ln whlch the rail~ are ~upporte~ 1~ po~ition may b~ ~olec~e~ to ~ult thQ c~n~ltion~
o~ the work ~ita~ Whother the ~ntlro ~pparatus i~ ad~pted for comple~e ~erlal control or part o~ ~h~ apparatu~ i9 sub~ect to ~ontrQl by comma~d~ uad ~y an op~rator statiol-~d to over3~e th~ ~p~xa~lon i8 a ma~tt~r ~o ~e determined depending on shop conditions.
op~on~lly~ th~ ~torag~ 1 for wrappiny paper rolls may ~e de3i~n~d in a rotary ~y~tom as indi~ated ~ 1' in F~gura 2, ~hich ~h~ a xotary ~ttorage ha~ing a plurality of wrapping paper rolli~ ~ o~ vax~ylng wid~hs di~po~d a~
I regula.rly s~acatl circuTaft~r~n~iall~ on a singl~ ~ircle. Of the ~lurality of roll~ 9 of w~pping paper, ~he par~icular ~S on~ haviny a re~uired width i~ brov.ght to the lowe~t poin~
o~ th~ ~ircl~ an~ tll~ ~rappiny paper is drawn out of thi~
particular roll~ Each roll 9 of wrapp~ng p~per i~ ~upp-~rt~rl in position by a bearing which is provided with a well-known frictional brakiny pulley 24. A stationary bel-t 23 for br~k~ng i~ pa.s~ arou~d the pulley~ 24. Owln-y to thi~
statio~r~ b~l~ 23, ~11 th~ pulloys ~xcept for the ~ulley at the lowe~t polnt ar~ frlct~onally restrained.
Opposed stationary pulleys 25 fasten the opposite ends oE
the braklng b~lt 23 an~ ~nabl.e the belt 23 to ~ tiyhtened or ~lacken~a as raqulr~d.
After the particular roll ~ of wrapplng pa~r havlng a r~quired w~d~h ha~ b~en fixe~ at th~ low~t ~lnt o~ the 31~3~
circle o~ th~ ~ot~xy ~axaga 1 ', th~ drlven pulle~t ~ide ena~
of th~ dri~;ng ~ndl~ss helt 26 lying belo~ this roll 9 is elevated and brought ~-to contact with the respective pulley 2~ as 3hown by a contlnuous lin~ in the ~r~wing, by ;n~ans oE th~
S driving me¢hanlsm,wh1~h i~ not ~hown in the drawingO When the drivi~g b~lt ~6 ~ æu~s~uently set rota~ing, ~he roll 9 o~ wrappiny pap~r at th~ lowe~t point ~ rotatosl in th~
direct~on of unwir~d~ng the w~a~ping paperO T~e ls~ad~ng end of the wrapping paper P whlah h~g~ down from th~ roll g come~ to re~t on ths ~ur~a~Q .of the 100r. On t~ floo~
~urface ~r~ ~e~eral parall~l endl~ bs~lt~ running tog~th~r.
Thu~, th~ l~ading end of thQ wrapping paper P held on tl belt~ i~ adva~ced to th~ 1~ft re1a~i~e ~o t~le dla~am o~
~igure 1~ Si~ce a ~uction b~x 11 i8 located be10w tlle b~lt~ 10, th~ wrap~ing paper P ~ held in inti~ate con~act with th~ belt~ 10 and~ in tha~ state, i~ advanc~d a~
desar1b~d aboYe.
At~r th~ portio~ of ~x~pping paper P ~aid off ~he ro11 9 has bean cut to a required 1ength, the fo110wing portion of wrap~in~3 paper i~ ~ak~n up again o~ tbe roll g. Thi~
rewlnding of the re~nainis~ ~ortlon o~ wrapuing pap~r is accomp1ished by xokat{ng in tll~ reYer~ d1r~stion tlle ~n~-less belt 26 whlch ha~ ~een used formerly in cau~ing the wr~pping paper to ~e unwound ~rom k~a roll. In thi3 ca.5e, the rem~i~ln~ portion ~ wra~ping paper is rewound witl~
a~p1e t~htne~ ~y c~using th~ retaining ro11~r~ 2'7 at the,l ' leading ~nd~ of the osc1~1a~ion arms 21a to b~ pre~se~
~ 8~
a~air~'c th~ periph~sral ~uraca ~ he roll 9 of wra~plng papar and actuaking th~a toul::h xoll~r~ of th~ w~ n~ing mach~n~. Nc~rMal~.y, the r~tainis~g roll~r~ 27 ~sLre h~ld in a lowered le~rel c~ to lthe upp~r ~u:~a::e of he convQyor 10, 5 r~ady or u~. Of cclur~e, the oscil~tion a~ms 27a are located at ~h~3 out~lde~ o~ the~ f~3cling mechanis~!l and the ~ndle~ belt 2~ ~ o~cillal:ed at the poF3ition ~ which th~
roll 9 o~ wxaE)pin~ paper collide~ ~ith th~ edye pulley 24.
Thu~, ~o hindra~c~ i~ of~ere~ to th~ e~try or departure of the wrapp~n~ p~x P. Tlle pla~ ~iew depicking ~i~
cond~ti~n is omitt~d.
Now, the mechanism which causes the wrappinq paper drawn out of the coil in the storage 1 or 1' and tending to curl up-to be placed as stretched to full leng-th on the drawing conveyor, corrects t~le curlLng t~ndency o~ the wrapping p~ per, an~ ~orwards it in the ~or~ o~ a Elat wrapping paper will b2 de~crlbad with reference to the embodiment`s of Figures 4-/.
In a ~on~el~tio~al automatlc fe~d ~vic~, in ora~r that a wrapping paper drawn out from a small roll Y of wrapping paper and strongly tending to curl up may be stretched flat and cut to a desired lengt}l, ~he operator ha3 been c~l~pelled to ke~p the l~adin~ end o~ ~he wrappiny pap~r pre~$ed a~ain8t th~ ~uc~on ~on~eyorO The work of ~venly pressin~
acJain~t the conveyor th~ leading ~nd o~ a wrappi~g pap~r 900 to 1500 mm ln w:~d-~h and haYin~ a high curling t~n-lency, ¦
lcult arl~ c:o~plicat~d to roanu~lly p~rform. In this 3~3~
respect, therefore, the conventional automatic Eeed device has hardly deserved the designation "automatic device".
The embodiments of Figures 4-7 adapt the rotary storage for wrapping paper rolls illustrated in Figure 2. In Figures 4-7, the wrapping paper roll 9 is illustrated as positioned at the lowermost ]evel~ Below the roll is located an extraction conveyor 28, which precedes a mechanism 13 for correcting the curling tendency o-f wrapping paper and a cu-tter 15. Of the plurality of wrapping paper rolls of varying widths regularly spaced circumferentially on a circle, the roll of desired width is moved to the designated position, i.e. the lowermost level as described above. As means for advancing the wrapping paper unwound from the roll 9, the present embodiment makes use of a movable inclined conveyor 28 and a suction conveyor 10' adapted to ru~ at a lower speed than the inclined conveyor 28.
The latt~r con~0yor i~ ~ub~tant~ally ~he ~ame a~ the ~x-traction oonveyor 10 illu~tr~t~d in Plgur~ 30 The movabla inclin~d con~yor 28 fulfill~ th~ fun~tton o~ frictional~y driv~ng a~lan i~ ~he downward direction ths leading end oP th~ portion of the wrapping papsr P
unwound ~rom ~hs roll 9 and ~ending to ~url up, ~pecifically at the illustrated po~ition. Whlla the roll 9 o~ wrapping -15- ~I !
3L'~L3F~
paper is in process of displacement to and from the lower-most position, a part of the movable inclined conveyor is retracted into the position shown in dash-dot lines.
The movable inclined conveyor 28 in the embodiment of Figures 4-6 consists of two parts, i.e. a belt conveyor 28a having a relatively small angle of inclination and a sharply inclined belt conveyor 28b which is connected to the rear end of the aforementioned belt conveyor 28a, each comprising a plurality of endless belts. These two conveyors are connected to each other by a common combination rotary drive shaft and oscillation shaEt 29. A driven pulley 12a of the conveyor 28a concurrently serves as an upper movable roller 12 (Fiyure 1) of a pair of side nip rollers of the curl correcting mechanism 13. Driven pulleys 34 of the sharply inclined belt conveyor 28b are idly ~oined to the movable shaft 33 and allowed to rotate freely. The conveyor 28b can be moved either to approach the wrapping paper roll 9 (as shown in unbroken lines in Figure 43 or to assume its waiting position ~indicated 20 by the dash-dot lines in Figure 4). Thls shift of the position of the conveyor 28b is effected by swinging supporting arms 32 illustrated in Figure 6. The drive mechanism for this pulley 34 is omitted from the drawing.
As is clear From Figure 6, the conveyor 28b in the present embodiment has contact rolls 35 interposed 1' between the parallel belt pulleys 34. These rolls 35 are ' invariably driven by the shaft 33 and a drive mechanism 36 and the pulleys 34 are freely rotatable around the shaft 33.
When the contact rolls 35 are rotated at a suitable speed and held lightly in contact with the wrapping paper roll 9 (~s illustrated in Figures 4-5~ and the belt conveyors 28a, 2~b are rotated at a relatively high speed by the rotation of the shaft 29 and that of the drive mechanism 37, the leading end of wrapping paper which has separated from the surface of the wrapping paper roll 9 and advanc~d in the unwinding direction is scraped off the roll 9 by the contact rolls 35 and con3equen~1y ~oYed onto tho ~urfac~ of the conv~yor 28~. A~ the rotation o~ ~he roll g in th~ unwind~ng direation proc~eds, the leading e~d of the wrapping paper P
i8 ~ictio~ally drl~en a~d mov~d from the conveyor 28b ~o the conveyor 28~ and ~hen advanc~d toward the pa~ of nip rollers formed by the lef-tmost pulleys of the upper and lower con~9yor~ ~a, lo ~ . ~eanwh~ le, even when the l~a~ing end of ~h~ wrapping pap~ P tend~ to ~url ~p ~nto a loop owing to ~he curling t~ndency o~ th~ p~per, ~t i~ continuously elongat~d bec~u~e th~ inali~d conveyor 28 runs at a high~r spsed than th~ un~indi~q sp~ed of w~app~ng paper and the ~peed o the ~ct~n ~o~veyor lOZ. In the thu~ cont~-nuously elongate~ ~tate, thR lea~lng ~nd of wrapping pap~r iB advanced toward ~he lower ~nd of the incllned con~yor 28, name~y toward th~ lower ~urfac~ o~ th~ pull~y 12a.
After pa~ing the nlp roll~r~ whlcll concurr~ntly serve a~ thq ~ull~y~ for th~ upper and lower conveyors, tl~le~
lead~ng end of wrappl~ paper P continue~ to ad~ance intol th~ curl corre~tlng m~ah~ni~m 13, ther~ to be glven reYer~e 3~
strain and rendered substantially flat. The curl correcting mechanism 13 in this embodiment is provided with a guide plate 30 ~Figure 5~, a curl removing member 31, and a mechanism (not shown) Eor imparting a vertical motion to the guide plate 30 and the curl removing member 31. With these two parts or~ginally located at the position indicated by the dash-dot line, this mechanism advances the lead~ng end of wrapping paper P along the guide plate 30 and inserts it between the nip rollers 14. Subsequently, i-t elevates the guide plate 30 and the curl removing member 31 to a level at which they are shown in lines in ~igure 5 and thus causes the curl removing member 31 to rub the wrapping paper P to impart reverse strain theretoO
In the presen-t e~bodiment, the pulley 12a of the inclined conveyor 2~ is vertically movable, so -that, after the leading end of wrapping paper P has passed thereunder, it is lowered to the level indicated by the dash-dot line in Figure 5 and used as a nip roller. In that case, the drive mechanism 37 for the inclined conveyor 28 is idly rotated.
After the unwound portion of wrapping paper has been relieved of the curling tendency and cut to a required length, the remaining portion of the wrapping paper separated from the roll is taken up again on the roll by rotating the roll in its winding direction in exactly the same way as the conventional device. When a steel coil C of a different~
width is received, the in~lined conveyor 28b is rotationall~
retracted around the center of the shaft 29 and it is brought bacls to its original position after a new roll 9 of wrapping paper having the 3~3~
required wldth ha~ been moved to the designatsd position.
If the plurality of rolls 9 of wrapping paper are coaxially arrayed to allow a selected one of the rolls to ~e moved axially to the designated posi-tion, the inclined conveyor 28, as illustrated in Figure 7, has no use for the above-described arrangement. In the embodiment '' of Figure 7, pulley 38 of the inclined conveyor 28 is stationary and another pulley 34 thereof is slightly swingable in the direction of the arrow to permit adjustment.
~lnce tha low~r ~urfa~ of the ~oreme~tion~d ~ulley 38 is clos~ to tn~ upper ~urfac~ of the s~ction conveyor 10', the lea~ing end of ~rapplng pap~r P ~hich has passed through the gap be~ween tl~ op~o~d ~urac~ a~ly ~ucked tuward the ~uction ~nYayor lV' ~ and, ~n that ~tate, fed ln~o lS the ~url correcting me~ha~ism 130
Claims (10)
1. A method of winding a wrapping paper onto the outer periphery of a metal coil, which comprises the steps of:
selecting from a plurality of rolls of wrapping paper having various widths one particular roll of wrapping paper of a required width;
drawing the wrapping paper from the selected roll;
cutting a drawn portion of the wrapping paper to a length conforming to the length of the periphery of the metal coil being wrapped;
forwarding the cut length of wrapping paper to a position below said metal coil;
winding the forwarded cut wrapping paper on a winding roll retained horizontally at a position slightly forward from the position below said metal coil;
discontinuing the winding of wrapping paper after a tail end of the cut length of wrapping paper has reached a position slightly rearward from the position below said metal coil and has assumed a restrained state;
rendering said winding roll rotatable and moving it upwardly, transversely, and downwardly thereby allowing the cut length of wrapping paper to unwind from said winding roll in consequence of the pull exerted by the tail end in said state of restraint and to be draped about a lower half portion and an upper portion of the outer periphery of said metal coil; and joining a leading end of said cut length of wrapping paper, separated from said winding roll, and said tail end of the wrapping paper to each other on the outer periphery of said metal coil.
selecting from a plurality of rolls of wrapping paper having various widths one particular roll of wrapping paper of a required width;
drawing the wrapping paper from the selected roll;
cutting a drawn portion of the wrapping paper to a length conforming to the length of the periphery of the metal coil being wrapped;
forwarding the cut length of wrapping paper to a position below said metal coil;
winding the forwarded cut wrapping paper on a winding roll retained horizontally at a position slightly forward from the position below said metal coil;
discontinuing the winding of wrapping paper after a tail end of the cut length of wrapping paper has reached a position slightly rearward from the position below said metal coil and has assumed a restrained state;
rendering said winding roll rotatable and moving it upwardly, transversely, and downwardly thereby allowing the cut length of wrapping paper to unwind from said winding roll in consequence of the pull exerted by the tail end in said state of restraint and to be draped about a lower half portion and an upper portion of the outer periphery of said metal coil; and joining a leading end of said cut length of wrapping paper, separated from said winding roll, and said tail end of the wrapping paper to each other on the outer periphery of said metal coil.
2. An apparatus for winding a wrapping paper on the outer periphery of a metal coil, comprising:
a storage for a plurality of rolls of wrapping paper having various widths;
means for drawing a portion of the wrapping paper from a desired one of said plurality of rolls of wrapping paper and cutting the drawn portion of wrapping paper to a required length;
a conveyor for forwarding said cut length of wrapping paper to a position below said metal coil;
a winding roll extending horizontally at a position slightly forward from said position below said metal coil;
winding means for winding said cut length of wrapping paper onto said winding roll and discontinuing said winding of wrapping paper after a tail end of said cut length of wrapping paper has reached a position slightly rearward from said position below said metal coil;
means for restraining said cut length of wrapping paper now held below said metal coil;
two laterally opposed suspension arms for supporting said winding roll in position and imparting a vertical motion thereto; and a supporting trolley adapted to support said two suspension arms in position, to move on horizontal rails, and to impart a transverse motion to said winding roll, whereby said cut length of wrapping paper is draped over a lower half portion and the whole upper portion of the outer periphery of said metal coil by causing said winding roll having said cut length of wrapping paper wound thereon to be rotated in the unwinding direction and to be moved upwardly, transversely and downwardly.
a storage for a plurality of rolls of wrapping paper having various widths;
means for drawing a portion of the wrapping paper from a desired one of said plurality of rolls of wrapping paper and cutting the drawn portion of wrapping paper to a required length;
a conveyor for forwarding said cut length of wrapping paper to a position below said metal coil;
a winding roll extending horizontally at a position slightly forward from said position below said metal coil;
winding means for winding said cut length of wrapping paper onto said winding roll and discontinuing said winding of wrapping paper after a tail end of said cut length of wrapping paper has reached a position slightly rearward from said position below said metal coil;
means for restraining said cut length of wrapping paper now held below said metal coil;
two laterally opposed suspension arms for supporting said winding roll in position and imparting a vertical motion thereto; and a supporting trolley adapted to support said two suspension arms in position, to move on horizontal rails, and to impart a transverse motion to said winding roll, whereby said cut length of wrapping paper is draped over a lower half portion and the whole upper portion of the outer periphery of said metal coil by causing said winding roll having said cut length of wrapping paper wound thereon to be rotated in the unwinding direction and to be moved upwardly, transversely and downwardly.
3. An apparatus for winding a wrapping paper on the outer periphery of a metal coil, comprising:
a storage for a plurality of rolls of wrapping paper having various widths;
means for drawing a portion of the wrapping paper from a desired one of said plurality of rolls of wrapping paper and cutting the drawn portion of wrapping paper to a required length;
curl correcting means for imparting reverse strain to said cut length of wrapping paper during the passage thereof between two pairs of nip rollers;
a conveyor for forwarding the straightened cut length of wrapping paper to a position below said metal coil;
a winding roll extending horizontally at a position slightly forward from said position below said metal coil;
winding means for winding said cut length of wrapping paper onto said winding roll and discontinuing said winding of wrapping paper after a tail end of said cut length of wrapping paper has reached a position slightly rearward from said position below said metal coil;
means for restraining said cut length of wrapping paper now held below said metal coil;
two laterally opposed suspension arms for supporting said winding roll in position and imparting a vertical motion thereto; and a supporting trolley adapted to support said two suspension arms in position, to move on horizontal rails, and impart a transversal motion to said winding roll, whereby said cut length of wrapping paper is draped over the lower half portion and the whole upper portion of the outer periphery of said metal coil by causing said winding roll having said cut length of wrapping paper wound thereon to be rotated in the unwinding direction and to be moved upwardly, transversely and downwardly.
a storage for a plurality of rolls of wrapping paper having various widths;
means for drawing a portion of the wrapping paper from a desired one of said plurality of rolls of wrapping paper and cutting the drawn portion of wrapping paper to a required length;
curl correcting means for imparting reverse strain to said cut length of wrapping paper during the passage thereof between two pairs of nip rollers;
a conveyor for forwarding the straightened cut length of wrapping paper to a position below said metal coil;
a winding roll extending horizontally at a position slightly forward from said position below said metal coil;
winding means for winding said cut length of wrapping paper onto said winding roll and discontinuing said winding of wrapping paper after a tail end of said cut length of wrapping paper has reached a position slightly rearward from said position below said metal coil;
means for restraining said cut length of wrapping paper now held below said metal coil;
two laterally opposed suspension arms for supporting said winding roll in position and imparting a vertical motion thereto; and a supporting trolley adapted to support said two suspension arms in position, to move on horizontal rails, and impart a transversal motion to said winding roll, whereby said cut length of wrapping paper is draped over the lower half portion and the whole upper portion of the outer periphery of said metal coil by causing said winding roll having said cut length of wrapping paper wound thereon to be rotated in the unwinding direction and to be moved upwardly, transversely and downwardly.
4. An apparatus for moving a desired one of a plurality of rolls of wrapping paper of various widths arrayed serially to a designated position, unwinding wrapping paper from said roll, cutting the unwound portion of wrapping paper to a required length, and winding said cut length of wrapping paper on the outer periphery of a metal coil, said apparatus comprising means for feeding wrapping paper to said metal coil and said feeding means comprising a movable inclined belt conveyor capable of enabling a leading end of wrapping paper unwound from the roll and tending to curl up to be moved aslant in the downward direction and to be brought to a position for frictional driving, a suction conveyor extending horizontally with an upper surface thereof close to a lower end of said inclined conveyor and means for driving said suction conveyor at a lower speed than said inclined conveyor so as to advance said wrapping paper in the direction of the lower end of said inclined conveyor.
5. An apparatus for winding a wrapping paper on the outer periphery of a metal coil, comprising:
means for drawing a portion of the wrapping paper from a storage roll and cutting the drawn portion to a required length;
a conveyor for forwarding said cut length of wrapping paper to a first position below said metal coil;
a winding roll extending horizontally at a second position slightly forward from said first position;
winding means for winding said cut length of wrapping paper onto said winding roll and discontinuing said winding of wrapping paper after a tail end of said cut length of wrapping paper has reached a third position slightly rearward from said first position;
means for restraining said tail end; and means for displacing said winding roll upwardly and transversely while allowing said winding roll to rotate to unwind said cut length from said winding roll onto said metal coil.
means for drawing a portion of the wrapping paper from a storage roll and cutting the drawn portion to a required length;
a conveyor for forwarding said cut length of wrapping paper to a first position below said metal coil;
a winding roll extending horizontally at a second position slightly forward from said first position;
winding means for winding said cut length of wrapping paper onto said winding roll and discontinuing said winding of wrapping paper after a tail end of said cut length of wrapping paper has reached a third position slightly rearward from said first position;
means for restraining said tail end; and means for displacing said winding roll upwardly and transversely while allowing said winding roll to rotate to unwind said cut length from said winding roll onto said metal coil.
6. An apparatus as claimed in Claim 5, wherein said drawing means comprise a first conveyor extending horizontally and a second conveyor inclined downwardly from said storage roll towards said first conveyor.
7. An apparatus as claimed in Claim 6 in which said first conveyor comprises a suction conveyor.
8. An apparatus as claimed in Claim 5, 6 or 7, further comprising means for at least partly removing a curl from said cut length during the advance of said cut length towards said winding roll.
9. A method of winding a wrapping paper on the outer periphery of a metal coil, which comprises the steps of:
selecting from a plurality of rolls of wrapping paper having various widths in a storage one particular roll of wrapping paper of a required width, drawing the leading end of the wrapping paper out of the roll as retained in a horizontal state, cutting a portion of the drawn wrapping paper to a length conforming to the length of the periphery of the metal coil being wrapped, forwarding by conveying means the cut portion of wrapping paper as stretched to full length to a position below said metal coil which is slightly above the conveying means, winding the cut and forwarded length of wrapping paper on a horizontally retained winding roll of a winding mechanism with a wrapping paper end retaining mechanism disposed at a position slightly forward from a position directly below said metal coil, discontinuing the winding of wrapping paper at the time that the tail end of the cut length of wrapping paper has reached a predetermined position slightly rearward from the position directly below said metal coil, retaining the cut portion of wrapping paper at said predetermined position on said conveying means, rendering said winding roll rotatable and moving the winding roll, which has the cut portion of wrapping paper wound thereon and retains its horizontal posture, upwardly, transversely and downwardly around said metal coil, thereby allowing the cut portion of wrapping paper unwound from said winding roll to be draped on the lower half portion and the whole upper portion of the outer periphery of said metal coil, and joining the leading and trailing ends of said cut portion of wrapping paper to each other on the outer periphery of said metal coil.
selecting from a plurality of rolls of wrapping paper having various widths in a storage one particular roll of wrapping paper of a required width, drawing the leading end of the wrapping paper out of the roll as retained in a horizontal state, cutting a portion of the drawn wrapping paper to a length conforming to the length of the periphery of the metal coil being wrapped, forwarding by conveying means the cut portion of wrapping paper as stretched to full length to a position below said metal coil which is slightly above the conveying means, winding the cut and forwarded length of wrapping paper on a horizontally retained winding roll of a winding mechanism with a wrapping paper end retaining mechanism disposed at a position slightly forward from a position directly below said metal coil, discontinuing the winding of wrapping paper at the time that the tail end of the cut length of wrapping paper has reached a predetermined position slightly rearward from the position directly below said metal coil, retaining the cut portion of wrapping paper at said predetermined position on said conveying means, rendering said winding roll rotatable and moving the winding roll, which has the cut portion of wrapping paper wound thereon and retains its horizontal posture, upwardly, transversely and downwardly around said metal coil, thereby allowing the cut portion of wrapping paper unwound from said winding roll to be draped on the lower half portion and the whole upper portion of the outer periphery of said metal coil, and joining the leading and trailing ends of said cut portion of wrapping paper to each other on the outer periphery of said metal coil.
10. Apparatus for winding a wrapping paper on the outer periphery of a metal coil, which apparatus comprises:
a storage for a plurality of rolls of wrapping paper having various widths, in a storage, means for drawing a leading end of the wrapping paper on one particular roll of wrapping paper of a required width from the roll with the roll in a horizontal state, means for cutting a portion of the drawn wrapping paper to a length conforming to the length of the periphery of the metal coil being wrapped, conveying means for forwarding the cut portion of wrapping paper, stretched to full length, to a position below said metal coil which is slightly above the conveying means, means for winding the cut and forwarded portion of wrapping paper on a horizontally retained winding roll of a winding mechanism with a wrapping paper end retaining mechanism disposed at a position slightly forward from the position directly below said metal coil, means for discontinuing the winding of wrapping paper at the time that the tail end of the cut portion of wrapping paper has reached a predetermined position slightly rearward from the position directly below said metal coil, means for retaining the cut portion of wrapping paper at said predetermined position on said conveying means, means for rotating said winding roll and moving said winding roll, which has the cut portion of wrapping paper wound thereon and retains its horizontal posture, upwardly, transversely and downwardly around said metal coil, thereby allowing the cut portion of wrapping paper unwound from said winding roll to be draped on the lower half portion and the whole upper portion of the outer periphery of said metal coil, and means for joining the leading and trailing ends of said cut portion of wrapping paper separated from said winding roll to each other at the outer periphery of said metal coil.
a storage for a plurality of rolls of wrapping paper having various widths, in a storage, means for drawing a leading end of the wrapping paper on one particular roll of wrapping paper of a required width from the roll with the roll in a horizontal state, means for cutting a portion of the drawn wrapping paper to a length conforming to the length of the periphery of the metal coil being wrapped, conveying means for forwarding the cut portion of wrapping paper, stretched to full length, to a position below said metal coil which is slightly above the conveying means, means for winding the cut and forwarded portion of wrapping paper on a horizontally retained winding roll of a winding mechanism with a wrapping paper end retaining mechanism disposed at a position slightly forward from the position directly below said metal coil, means for discontinuing the winding of wrapping paper at the time that the tail end of the cut portion of wrapping paper has reached a predetermined position slightly rearward from the position directly below said metal coil, means for retaining the cut portion of wrapping paper at said predetermined position on said conveying means, means for rotating said winding roll and moving said winding roll, which has the cut portion of wrapping paper wound thereon and retains its horizontal posture, upwardly, transversely and downwardly around said metal coil, thereby allowing the cut portion of wrapping paper unwound from said winding roll to be draped on the lower half portion and the whole upper portion of the outer periphery of said metal coil, and means for joining the leading and trailing ends of said cut portion of wrapping paper separated from said winding roll to each other at the outer periphery of said metal coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000403698A CA1214384A (en) | 1982-05-26 | 1982-05-26 | Method and apparatus for wrapping metal coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000403698A CA1214384A (en) | 1982-05-26 | 1982-05-26 | Method and apparatus for wrapping metal coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1214384A true CA1214384A (en) | 1986-11-25 |
Family
ID=4122861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000403698A Expired CA1214384A (en) | 1982-05-26 | 1982-05-26 | Method and apparatus for wrapping metal coil |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1214384A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109878791A (en) * | 2019-03-28 | 2019-06-14 | 东莞万旗机械设备有限公司 | Wire rod packing device |
-
1982
- 1982-05-26 CA CA000403698A patent/CA1214384A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109878791A (en) * | 2019-03-28 | 2019-06-14 | 东莞万旗机械设备有限公司 | Wire rod packing device |
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