• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An apparatus (1) and method for introducing a foil (10) to be laminated to an inner surface (15) of an elongated duct (6), wherein the foil is providable on an axle (2), the axle being movable from a first position outside of the duct, where the foil is provided on the axle, to a second position inside the duct where the foil is in position for lamination to the inner surface of the duct.(Fig. 1)
    公开号:SE1550279A1
    申请号:SE1550279
    申请日:2015-03-06
    公开日:2016-09-07
    发明作者:Wallin Peter；Bernhardsson Göran
    申请人:Climate Recovery Ind Ab；
    IPC主号:
    专利说明:

    METHOD AND APPARATUS FOR INTRODUCING A FOIL INTO AN ELONGATEDDUCTField of technologyThe present invention concerns how to introduce a foil forlamination into an elongated duct, preferably for ducts madeof glass or stone fibres and especially for ventilationducts.
    BackgroundIn order to provide sealed and fire proof ducts, especiallywhen made of fibres, it is required to laminate the ducts onthe outside and on the inside. To laminate on the outside aconventional method. may' be used, such as rotating' a ducthaving a foil provided around the periphery over a hot table.at least a layer ofFoils to be used. generally' comprisesmetal, such as aluminium, and a thermoplastic polymer layerfor heat adhering to the surface of the duct.
    It is difficult to arrange a foil inside an inner space of anelongated duct, the ducts may be several meters long. Therisk of ripping and crinkling the foil is obvious. Both lead-ing to insufficient lamination of the duct.
    Summary of the inventionThe aim of the present invention is to provide an effectiveway' of introducing' foil into elongated. ducts limiting' therisks of ripping and crinkling and increasing the possibili-ties of high quality lamination.
    According to a first aspect of the present invention an appa-ratus is provided. The apparatus comprises an axle and thefoil is providable on the axle, the axle being movable from aAnsökningstext 2015-03-06 150011SEfirst position outside of the duct, where the foil is provid-ed on the axle, to a second position inside the duct wherethe foil is in position for lamination to the inner surfaceof the duct.
    Preferably, the ducts are made of glass or stonefibres and especially suitable for ventilation ducts.
    According to one embodiment the axle is provided with meansfor spreading out the foil against the inner surface of theduct. This increases the quality of the following lamination.According to another embodiment the axle comprises means forregulating a gas, both under pressure and over pressure, andhaving orifices connected to the regulation means at a sur-face of the axle. Preferably, the means for regulating a gasis set to provide an under pressure along the axle in orderto keep the foil in position during the movement of the axlefrom the first to the second position. In this way the foilis securely fixed at the axle during the movement of the axleinto the inner* space of the elongated. duct decreasing' therisk of ripping and crinkling.
    According to a further embodiment the means for spreading outthe foil is using the means for regulating a gas to providean over pressure along the axle in order to spread out thefoil in position for lamination when the axle is in the sec-ond position. This function may be used on its own or com-bined with the mechanical feature described below.
    According to one embodiment the means for spreading out thefoil comprises a næchanism for increasing the circumferenceof the axle. This feature may be used on its own or combinedwith the function described above concerning over pressure.
    Ansökningstext 2015-03-06 150011SEPreferably, the axle has a cross sectional shape which corre-sponds to the cross sectional shape of the inside of theinner space of the duct. Also this increases the quality ofthe following lamination.
    According to one embodiment the foil which is arrangeable atthe axle is in the form of a tube.
    According to another embodiment the foil arrangeable at theaxle is in the form of a sheet, preferably rolled off a sup-ply roll.
    According to a further embodiment the axle is provided withat least a gripper provided at each end or along the lengthof the axle,parallel to the axle, in which gripper an end ofthe foil is gripped. Preferably, the axle is rotatable aroundits length axis, thus rolling up foil around the periphery ofaxle.
    According to another embodiment a brush is arranged along thelength of the axle, the brush being movable towards againstthe periphery of the axle during the rolling up of foil onthe axle.
    According to one embodiment a cutter is movable from one endof the axle to the other end cutting the foil parallel to thelength axis, thus detaching a piece of foil rolled up on theaxle from a supply roll.further embodiment heatAccording to a laminating meansis/are provided at least in the end of the axle which isfirst introduced into the inner space of the duct. It is alsopossible that the heat laminating means are arranged alongthe full length of the axle.
    Ansökningstext 2015-03-06 150011SEAccording to one embodiment the axle is movable out of theinner space of the duct and at the same time the heat lami-nating means are active, thus laminating the foil against theinner surface of the inner space of the duct, during' thewithdrawal of the axle. It is conceivable that the heat lami-nating means uses hot gas at over pressure or are contactheating pads.
    According to a second aspect of the present invention a meth-od is provided for introducing a foil to be laminated to aninner surface of an elongated duct, comprising the steps:- arranging a foil to an axle when the axle is in afirst position outside of the duct,- introducing the axle and the foil into the innerspace of the duct by nwving the axle into a secondposition inside the duct, where the foil is in posi-tion for lamination to the inner surface of the duct.
    According' to an embodiment of the method. it comprises thestep of spreading out the foil along the inner surface of theduct so that the foil is in contact with the inner surface.
    According' to an embodiment of the method. it comprises thestep of sucking the foil to the axle by means of under pres-sure during the step of introducing the axle into the innerspace of the duct.
    According' to an embodiment of the method. it comprises thestep of gripping an end of the foil with at least a gripperprovided. at each. end. or lengthwise at the axle, unrollingfoil from a supply roll, rolling up the foil on the axle, byrotating the axle, and cutting off the rolled up foil fromthe supply roll.
    Ansökningstext 2015-03-06 150011SEAccording' to an embodiment of the method. it comprises thestep of laminating the foil to the inner surface of the ductby means of heat.
    According' to an embodiment of the method. it comprises thestep of heat laminating during the step of withdrawing theaxle from the inner space of the duct.
    Description of the drawingsThe present invention will now be described in more detailunder referral to the attached drawings, in which:Fig. l shows an apparatus according to the invention in ageneral view.
    Fig. 2a and 2b shows an embodiment in a cross sectional viewwhen foil is rolled up on an axle and possibility to regulategas through orifices in the axle.
    Fig. 3 shows an embodiment in a cross sectional view of theduct, foil and the axle when spreading out the foil againstan inner surface of the duct.
    Fig. 4a and 4b shows another embodiment in a cross sectionalview the duct, foil and the axle when spreading out the foilagainst an inner surface of the duct.5 shows a further embodiment in a cross sectional viewfoil foilFig.the duct, and the axle when spreading out theagainst an inner surface of the duct.Fig. 6 shows heat laminating means at the end of the axlewhich is first introduced into the inner space of the duct.
    Detailed description of embodimentsDifferent embodiments of the present invention will now bedescribed in detail. Different features described may becombined in any way and not only in accordance with the exem-plifying embodiments described.
    Ansökningstext 2015-03-06 150011SEIn Fig. l a general view of an embodiment of the apparatus isshown from the side. The apparatus l has an axle 2, the axle2 being movable back and forth in its axial direction, seethe double arrow. This may be accomplished by having a sup-port 3 that may slide along a foundation 4, for example.
    In front of the axle 2 a cradle 5 is arranged for holding anelongated duct 6 to be provided with a foil lO at its innerspace 7. The cradle 5 preferably has a stopper 8 in each endfor keeping the duct 6 in position during the introduction ofthe foil lO. The duct 6 is kept in line with a length axis ofthe axle 2. It is also conceivable to arrange the apparatusin a vertical direction, too.There are different ways to arrange the foil lO on the axle2. One way may be to have the foil lO in tube form and pullit over the axle 2 into position (not shown). Another way isto roll up a piece of foil lO for example from a supply rollll, see Fig. 2a.
    An end portion l2 of the foil lO is rolled off from the sup-ply roll ll and positioned in the vicinity of the axle 2, forexample on a table movable in under the axle 2. The axle 2may be lowered or the table raised so that at least a gripperl3 may grip the end portion l2 of the foil lO. Preferablythere is a gripper l3 in each end of the axle 2. It is alsoconceivable to have grippers l3 along the length of the axle2.
    In one embodiment the gripper l3 at each end grip the endportion l2 and hold it while the axle 2 and the table dis-tances from each other and the axle 2 starts rotating thusrolling up the foil lO onto the axle 2. Preferably a brushAnsökningstext 2015-03-06 150011SEWß(not shown) brushes along the length of the axle 2 in orderto roll the foil 10 up tightly around the axle 2.(not shown)The foil 10 is cut off by means of a cutter alongthe length of the axle 2, parallel to the length axis of theaxle 2. Preferably a foil holder is put against the foil 10provided on the table in order to keep the foil 10 in posi-tion during the cutting operation. When the piece of foil 10is cut off the brush holds the last portion of the foil 10while the grippers 13 take a new grip at also the overlappinglast portion of the foil.
    In one embodiment the axle 2 is provided with means for regu-lating a gas. The axle 2 is then provided with orifices 14 atthe periphery of the axle 2, see Fig. 2b. The orifices 14 areconnected via conduits to the gas regulating means.
    According to one embodiment the gas regulating' means canprovide under pressure so that a sucking force is provided atthe orifices 14 spread out over the periphery of the axle 2.Thus the foil 10 arranged around the axle 2 may be suckedagainst the axle 2 in order to affix the foil 10 more secure-ly.
    When the foil 10 is arranged at the axle 2, either in tubeform or piece form, the axle 2 moves along its length axistowards and into the inner space 7 of the duct 6 until thefoil 10 is in a corresponding position where an inner surface15 of the inner space may be covered by the foil 10. At leastthe grippers 13 keep the foil 10 in position on the axle 2but preferably also under pressure from the gas regulatingmGanS.
    Ansökningstext 2015-03-06 150011SEAccording to an embodiment, means for spreading out the foil10 against the inner surface 15 of the duct is provided. Thismeans for spreading out the foil can be a gas, such as air,blowing out from the orifices 14, see arrows in Fig. 4a and4b, by means of a gas regulating means providing over pres-sure. This embodiment is suitable when the cross sectionalshape of the inner space 7 for example is circular. In Fig.4a the foil 10 is shown made up of a piece and in Fig. 4b thefoil 10 is in tube form.
    According to another embodiment means for spreading out thefoil 10 against the inner surface 15 of the duct are mechani-cal means arranged so that an increase of the periphery ofthe axle 2 may be achieved which will spread out the foil 10against the inner sides 15 of the duct. See Fig. 3 and 5.This embodiment is suitable for example for cross sectionalshapes of the inner space 7 having corners, such as a hexago-nal shape.
    An example of an axle 2 having hexagonal shape is shown inFig. 5. Corner parts 16 are movable in radial direction, asshown with the arrows in Fig. 5. When having corners in theinner space 7 it is preferred to make sure the foil 10 isspread into the corners to adhere also there. When havingcorner parts 16 a more secure spreading out is provided.When the axle 2 with arranged foil 10, either in tube form orpiece form, is positioned inside the inner space 7 of theduct 6, the step of spreading out the foil 10 along the innersurface 15 of the duct 6 so that the foil 10 is in contactwith the inner surface 15 is started. Now the foil 10 is inposition ready for heat lamination.
    Ansökningstext 2015-03-06 150011SEAccording to one embodiment it is also preferred to add overpressure from a gas regulating means to the mechanicalspreading out means. This builds up a thin cushion of gas,preferably air, between the foil 10 and the axle 2. Thus thefriction goes down to a minimum during the step of withdraw-ing the axle 2. It is also possible to radially withdraw themechanical spreading out means a very short distance to makeroom for the cushion of gas. For example the distance may be1 mm.
    When the foil 10, in tube form or piece form, is in positionfor lamination the axle 2 withdraws out from the inner space7 of the duct 6. At the same time the lamination step start.This may be performed with a separate apparatus introducedfrom the end of the duct 6 furthest from the axle 2 and itssupport 3. But it is also conceivable to arrange heat lami-nating means in the present apparatus.
    According to one embodiment heat laminating means 17 is/arearranged at least at the end of the axle 2 which is the firstintroduced into the inner space 7. It is also conceivable tohave heat laminating means along the full length and periph-ery of the axle 2.
    When the axle 2 is moving out of the inner space of the ductand the heat laminating means are active at the same time, alamination of the foil 10 against the inner surface 15 of theinner space 7 of the duct 6 will occur, during the withdrawalof the axle 2. It is also conceivable to heat laminate thefoil 10 along the full length of the duct 6 if heat laminat-ing means 17 are present along the full length of the axle 2while the axle 2 is still present inside of the duct 6.
    Ansökningstext 2015-03-06 150011SEThe heat laminating means 17 may be contact heating pads 17or hot gas provided at over pressure or a mix of both. It isconceivable to use the gas regulating' means and. connectedorifices 14 along the full length of the axle 2 in order toinside of thelaminate while the axle 2 is standing stillduct 6.
    If contact heating pads 17 are used they are preferably ar-ranged at the end furthest away from the support 3 andbrought in contact with the foil 10 pressing against theinner surface 15 of the duct 6 while the axle 2 is withdrawnthus heat laminating the foil 10 against the inner surface 15of the duct 6.
    Preferably, the feature of blowing gas through the orifices14 in order to provide a gas cushion is used at the same timeas the contact heating pads 17 are used and it is also con-ceivable to use hot air for the gas cushion, which will premelt the thermoplastic polymer layer of the foil 10.
    The above described embodiments are only examples and shallnot be restricting the scope of the invention. The full scopeis shown in the appended claims.
    Ansökningstext 2015-03-06 150011SE
    权利要求:
    Claims (26)
    [1] ld An apparatus (1) for introducing a foil (10) to be lami-nated to an inner surface (15) of an elongated duct (6),wherein the foil (10) is providable on an axle (2), theaxle (2) being movable from a first position outside ofthe duct (6), where the foil (10) is provided on the ax-le (2), to a second position inside the duct (6) wherethe foil (10) is in position for lamination to the innersurface (15) of the duct (6).
    [2] 2.The apparatus according to claim 1, wherein the duct isfor ventilation.
    [3] 3. The apparatus according' to clain1 1 or 2, wherein. theduct is made of fibres, such as glass or stone fibres.
    [4] 4.The apparatus according to claim 1, 2 or 3, wherein theaxle is provided with means for spreading out the foil against the inner surface of the duct.
    [5] 5. The apparatus according to any one of the previousclaims, wherein the axle comprises means for regulatinga gas, both under pressure and over pressure, and havingorifices (14) connected. to the regulation. means at asurface of the axle.
    [6] 6.The apparatus according to claim 5, wherein the næansfor regulating a gas is set to provide an under pressurealong the axle in order to keep the foil in positionduring the movement of the axle from the first to thesecond position.
    [7] 7.The apparatus according to claim 5, wherein the meansfor spreading out the foil is using the means for regu-lating a gas to provide an over pressure along the axlein order to spread out the foil in position for lamina- tion when the axle is in the second position. Ansökningstext 2015-03-06 150011SE 12
    [8] 8.The apparatus according to claim 4, wherein the meansfor spreading out the foil comprises a mechanism for in-creasing the circumference of the axle.
    [9] 9. The apparatus according to any one of the previousclaims, wherein. the axle has a cross sectional shapewhich corresponds to the cross sectional shape of theinside of the inner space of the duct.
    [10] 10. The apparatus according to any one of the previousclaims, wherein the foil which is arrangeable at the ax-le is in the form of a tube.
    [11] 11. The apparatus according to any one of the previousclaims, wherein the foil which is arrangeable at the ax-le is in the form of a sheet, preferably rolled off asupply roll.
    [12] 12.The apparatus according to claim 11, wherein the axleis provided with at least a gripper (13) provided ateach end or along the length of the axle, parallel tothe axle, wherein an end of the foil is gripped.
    [13] 13.The apparatus according to claim 12, wherein the axleis rotatable around. its length. axis, thus rolling' upfoil around the periphery of axle.
    [14] 14.The apparatus according to claim 12 or 13, wherein abrush. is arranged. along the length of the axle, thebrush being movable against the periphery of the axleduring the rolling up of foil on the axle.
    [15] 15. The apparatus according' to clain1 11, 12, 13 or 14,wherein a cutter is movable from one end of the axle tothe other end cutting the foil parallel to the lengthaxis, thus detaching a piece of foil rolled up on theaxle from a supply roll.
    [16] 16.The apparatus according to any one of the previousclaims, wherein heat laminating means (17) is/are pro-vided at least at the end of the axle which is first in- troduced into the inner space of the duct. Ansökningstext 2015-03-06 150011SE
    [17] 17
    [18] 18.
    [19] 19.
    [20] 20.
    [21] 21.
    [22] 22.
    [23] 23.
    [24] 24. Ansökningstext 2015-03-06 .The apparatus according to claim 16, 13 wherein the heatlaminating means are arranged along the full length ofthe axle. The apparatus according to claim 16, wherein the axleis movable out of the inner space of the duct and at thesame time the heat laminating means are active.The apparatus according to claim 16, 17 or 18, whereinthe heat laminating means uses hot gas at over pressure.The apparatus according to claim 16, 18 or 19, whereinthe heat laminating means are contact heating pads.(10) to be laminated to (6), A method for introducing a foil an inner surface (15) of an elongated duct compris- ing the steps: - arranging a foil (10) to an axle (29 when the axle(2) is in a first position outside of the duct (6),- introducing the axle (2) and the foil (10) into the inner space (7) of the duct (6) by moving the axle (6),in position for lamination to the of the duct (6). (2) into a second position inside the duct wherethe foil (10) isinner surface (15)The method according to claim 21, comprising the stepof spreading out the foil along the inner surface of theduct so that the foil is in contact with the inner sur-face. The method according to claim 21 or 22, comprising thestep of sucking the foil to the axle by means of underpressure during the step of introducing the axle intothe inner space of the duct. The method according to claim 21, comprising the stepof gripping an end portion of the foil with at least a(13) gripper provided at each end or lengthwise at the axle, unrolling foil from a supply roll, rolling up the foil on the axle, by rotating the axle, and cutting off the rolled up foil from the supply roll. 150011SE 14
    [25] 25.The method according to any one of the næthod claims21-24, comprising the step of laminating the foil to theinner surface of the duct by means of heat.
    [26] 26.The method according to claim 25, comprising the stepof heat laminating during the step of withdrawing the axle from the inner space of the duct. Ansökningstext 2015-03-06 150011SE
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    同族专利:
    公开号 | 公开日
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1550279A|SE540262C2|2015-03-06|2015-03-06|Method and apparatus for introducing a foil into an elongated duct|SE1550279A| SE540262C2|2015-03-06|2015-03-06|Method and apparatus for introducing a foil into an elongated duct|
    US15/555,524| US11161294B2|2015-03-06|2016-03-04|Method and apparatus for introducing a foil into an elongated duct and apparatus and method for laminating a foil to a duct|
    EP16762058.2A| EP3265291B1|2015-03-06|2016-03-04|Method and apparatus for introducing a foil into an elongated duct and apparatus and method for laminating a foil to a duct|
    PCT/SE2016/050173| WO2016144238A1|2015-03-06|2016-03-04|Method and apparatus for introducing a foil into an elongated duct and apparatus and method for laminating a foil to a duct|
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