Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H81/00—Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
  • B65H81/06—Covering or wrapping elongated cores
  • B65H81/08—Covering or wrapping elongated cores by feeding material obliquely to the axis of the core
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/56—Winding and joining, e.g. winding spirally
  • B29C53/58—Winding and joining, e.g. winding spirally helically
  • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
  • B29C53/607—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels having driving means for advancing the wound articles, e.g. belts, rolls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/56—Winding and joining, e.g. winding spirally
  • B29C53/58—Winding and joining, e.g. winding spirally helically
  • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
  • B29C53/62—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/80—Component parts, details or accessories; Auxiliary operations
  • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
  • B29C53/8066—Impregnating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
  • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
  • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2023/00—Tubular articles
  • B29L2023/22—Tubes or pipes, i.e. rigid
  • B29L2023/225—Insulated

Definitions

• This invention relates to an Apparatus and principle for the manufacturing of continuous cylinder elements, particularly the production of cylinder elements made of fibrous materials intended as insulation pipes.
• German patent DEI 660022 an invention is described for the production of a fibre based cylinder formed material for the insulation of tubes and such.
• the insulation is built up by winding a band formed fibre mat by the help of a system of rollers, so that at each revolution the mat is partly covering the previously wound mat on a forming roll, which at one end is free.
• a system according to DEI 660022 needs an exchange of several different rolls and adjustment of these in regard to each other to reach the wanted effect, whenever the apparatus has to be adjusted for a new pipe diameter, insulation thickness, density, overlap at winding up etc.
• the inner and outer forming tubes define, in the whole, most of these parameters and have furthermore to be changed at the slightest change of parameter. Overlap of the starting material is from easily explainable reasons, not possible to achieve at all.
• the purpose of the invention is to provide an approved apparatus for the manufacturing of cylindrical elements that solves the above mentioned problems.
• This invention refers to an apparatus for the manufacturing of continuous cylindrical elements, consisting of a forming roller for the winding up of a starting material, which forming roller is suspended in one end while the other end is free. Furthermore there is a support roller arranged for to direct the mentioned starting material towards the forming roller.
• the apparatus according to the present invention is characterised by that the mentioned forming roller and the mentioned support roller are parallel arranged with a guide roller and that an endless application belt with a first and a second side is moving with the mentioned first side against the support roller and the guide roller and with the mentioned second side against the forming roller thereby enclosing a part of the perimeter of the forming roller.
• the apparatus comprises means for to move the application belt in its endless course preferably via a drive roller that is engaging towards the application belt.
• a spanner roller may also be arranged for the control of the tension of the application belt.
• the guide roller is preferably axially possible to shift in relation to the support roller in order to force the application belt at production to move with a rise over mentioned part of the perimeter of the forming roller.
• a feeding position of a starting material is defined at an edge where the application belt meets the forming roller, and the drive shaft is thereby arranged to move the application belt in its endless course with mentioned rise directed towards the free end of the forming roller, that is in the direction of the exit for the so made cylindrical elements.
• the forming roller is suspended in mentioned end via a bearing device that gives free rotation to the forming roller.
• the application belt is perforated, i.e. as a net.
• Ventilation device for the distribution of tempered and moisture controlled air over the starting material arranged at the forming roller is therefore preferably arranged at the opposite side of mentioned application belt in relation to the forming roller and is arranged to spread air over the at the forming roller wound up starting material, through the perforated application belt.
• an application belt formed as a net may suit a roller with flanges arranged to fit in the meshes of the so net formed application belt.
• An inner core arrangement in order to, before the wind up of the starting material, wind a core to the forming roller and on that core then wind the starting material is also preferably comprised in the apparatus.
• an outer skin assembly for to, after the wind up of the starting material, apply an outer skin onto the so manufactured cylinder element.
• a nozzle or binder adding device is preferably arranged in connection with the before mentioned forming roller.
• the apparatus is preferably adjusted to use a water based binder that is furthermore hardening at low temperature, but also other binding techniques can be utilised.
• Figure 2 schematically shows in a view of perspective that part of an accomplishment of the invention that among all comprises the suspension of the forming roller and that the application belt in this figure is not shown to increase the clarity;
• Figure 3 and Figure 4 shows in a schematic way different forms of accomplishment of the application belt and its rollers
• Figures 5 a and 5b schematically shows a comparison between axially displaced and not displaced rollers where the oblique going of the application belt is shown;
• Figure 6 shows schematically an alternative form of accomplishment of a detail in Figure 1;
• Figure 7 schematically shows both a transparent and an elevated view of the wind-up device and its rollers according to one form of accomplishment of the invention
• Figure 8 schematically shows a transparent view of the wind-up device and its rollers according to one form of accomplishment of the invention, where the guide roller is displaced in relation to the support roller.
• Figure 1 shows form one side a preferred form of the invention.
• a forming roller 2, in the figure showed in cross-section is adjusted to serve as a core for the wind up of a starting material 27, for ex a fibre fleece, for the making of a cylinder element, just as the application of a belt-shaped strip on the handle of a tennis racket.
• the starting material is however not arranged to adhere against the surface of the forming roller 2, on the contrary the outer diameter of the forming roller 2 defines the inner diameter of that cylinder element which is formed in the apparatus according to the invention.
• the forming roller 2 is only suspended in one of its ends 21. This is necessary because the finished cylinder element part is meant to be able to leave the other free end of the mentioned forming roller 2 in continuous lengths.
• the free end 22 of the forming roller 2 is therefor defining an exit position at which exit position the finished cylinder element leaves the forming roller 2.
• the length of the forming roller 2 from its suspended end to its free end defines in an analogue way a direction of exit 23 of the finished cylinder elements.
• feeding belt 9 is arranged to move over a break roller 10 and the feeding belt 9 is preferably endless and driven from a roller that is fitting against the feeding belt 9.
• the starting material 27 is fed into the apparatus only by a wind-up device arranged to wind up the starting material 27 on the forming roller 2 without any further feeding device 9,10. Regardless of which manner the starting material 27 may be fed into the apparatus, the starting material 27 is fed against a position of feeding 8 to a wind up arrangement comprising the mentioned forming roller 2.
• the direction of the feed of the starting material 27 is mainly in a plane that is not perpendicular to the central shaft of the forming roller 2.
• the preferred overlap of starting material 27 at the forming roller 2 at wind up, the width of the starting material 27 and the diameter of the forming roller 2 are some of the parameters that is governing which feeding direction, or angle of feed, that is suitable in regard to the forming roller 2.
• the apparatus according to the invention may be arranged to wind up starting material 27 with a rise that is, per revolution of the forming roller 2, bigger than the width of the starting material 27, just the same as the width of the starting material 27, or with a preferred overlap of the starting material 27.
• the wind-up device in the apparatus comprises except the forming roller 2, also a supporting roller 3 and a guide roller 4. Mentioned rollers 2, 3 and 4 are arranged reasonably parallel in the apparatus. Furthermore the wind-up device comprises an endless application belt 1 with an inner surface 12 and an outer surface 13, and the mentioned application belt extends in an endless course that is mainly moving in a plane that is perpendicular to the forming roller 2.
• the application belt 1, that preferably is wider than the width of the starting material 27, moves over the support roller 3 and guide roller 4 and is fitting against these two rollers with its inner surface 12.
• both the support roller 3 and guide roller 4 arranged inside the loop so made by the endless application belt 1.
• the wind-up device is so arranged, that mentioned application belt 1 moves with its outer surface 13 turned towards the forming roller 2 and over some part of its perimeter.
• the forming roller 2 is thus arranged outside the closed-loop of the application belt, but is although partly encircled by the application belt 1 via its outer surface 13.
• Two points of operation 8, 14 can be defined; the edge 8 where the application belt 1 is engaging against the forming roller 2 from the support roller 3 and the edge 14 where the application belt is engaging against the forming roller 2 from the guide roller 4. Mentioned edges 8, 14 move of course along the whole width of the application belt 1 and along the forming roller 2.
• the application belt 1 is furthermore arranged around the rollers 2,3,4 with a certain tension, so that the application belt 1 , where in contact with the forming roller 2, acts with a radial pushing force towards the forming roller 2.
• the wind-up device comprises a driving device for to make the endless application belt 1 move in its endless course around the rollers 2,3,4.
• a driving device for to make the endless application belt 1 move in its endless course around the rollers 2,3,4.
• the driving device is comprising a drive roller 6, which may or may not be identical with the support roller 3 or the guide roller 4, but which in this so illustrated form of accomplishment is a separate roller 6.
• the drive roller 6 is fitting against the inner surface of the application belt 1, but it is easily realised that it could very well be arranged to fit against the outer surface of the application belt 1.
• two drive shafts at opposite sides of the application belt 1, more like a mangle.
• Some type of means of power transfer is arranged for the translation of a rotating movement at the drive shaft 6 to a movement of application belt 1. Mentioned power transfer arrangement may for ex be realised by a certain friction between the drive roller 6 and the application belt 1, caused by some rugged surface structure or choice of material.
• a power transfer by the help of teeth arranged as protruding stubs or ribbons either at the drive roller 6 or at its adversary surface 12 or 13 of the application belt 1 is utilised, with complementary devices at its adversary.
• the drive device is furthermore understood to comprise some type of motor and a transmission or mean for the transfer of power from the motor to the drive roller 6.
• the drive roller 6 is preferably arranged to move the application belt 1 in the direction given by the arrow in figure 1. If so, the application belt 1 will move from the support roller 3 to grip in to the forming roller 2 at the point of seizure 8.
• the starting material 27 By applying the starting material 27 to the application beltl, the starting material 27 will be made to follow the forming roller 2 around the whole part of its perimeter, against which the application belt is fitting. Therefor, that edge the point of seizure 8 constitutes, will make a position of feed to the wind-up device. If the starting material 27 have already been winded up at least one rotation around the forming roller 2, the continuous movement of the application belt 1 will cause further wind-up of the starting material 27 on the forming roller 2.
• the preferred rise for the wind-up is basically controllable by the direction of feed 29 that is utilised, see figure 2, that is, by which angle the starting material 27 is fed towards the forming roller 2.
• the wind-up device may also be arranged with a spanner roller 5.
• Mentioned spanner roller 5 is arranged to give the application belt 1 the right tension in order to bring to the starting material 27 the right pressure towards the forming roller 2.
• the spanner roller 5 may be a separate roller, as in the figure 1, or share the spanner function with some other roller over which the application belt 1 breaks.
• the guide roller 4 can, for ex very well also comprise this function. In such a case the guide roller 4 will no longer need to be completely parallel to the forming roller 2.
• Change in tension can be accomplished by for ex. letting the roller 5 in its whole length be adjusted in direction towards the application belt 1 for increased tension and from the application belt 1 in order to slacken and lower the tension.
• One advantage with the wind-up device according to the present invention is that it is rather easy to adjust the tension.
• the pressure at which the application belt 1 acts upon the forming roller 2, or any in between arranged starting material 27, over a drawn out part of the perimeter of the forming roller 2 is changed. No change of roller is necessary, which will lower any time needed for adjustment.
• Applied tension on the application belt 1 can simply be monitored by pressure sensors for ex. at the fastening point of the spanner roller 5 or any other roller used for this purpose or arranged so as to directly from the application belt monitor the applied tension.
• the wind-up device is also arranged to contribute to the side acting force, which make the cylindrical body, made up of the starting material 27, during wind-up on the forming roller 2, move side- wards.
• the friction between the starting material or, if a special core is used, between the so applied core and the forming roller 2 is, by different arrangements, made low, which makes the material easily glide axially over the forming roller 2, during wind-up.
• the application belt 1 however is not slippery in relation to the starting material 27, because the application belt 1 is arranged to, by the help of friction and tension, transfer its movement into a wind-up movement towards the starting material 27.
• the starting material 27 that is fed to the wind-up device under a certain angle 29 towards the normal plane of the forming roller 2 will be moved in the direction of the outflow 23 during wind-up.
• the mentioned application belt 1 is elastic in order to prevent pleats to arise.
• the elasticity though cannot be to high, in case it will, in a not wishful way, limit the applicable tension that has to be present in order to give the desired density of the cylindrical element material.
• the application belt is made out of a net of a stiff or limited elasticity material. If a net is used no pleats will probably be found on the netted application belt 1, if every knot is seen as a free point of movement.
• a net with free moving points can very well be accomplished with chains or similar, a metal net in common or with an armed rubber belt or a PVC belt.
• these side-movement prevention measures comprise tracks 31 or 42, respectively stubs 32 or 41 on the rollers 3,4 and correspondingly at the inside of the application belt 12, which tracks or stubs mainly moves in mentioned normal plane to the forming roller 2.
• the mentioned side-moving prevention measures comprise stop flanges 43, arranged at the rollers 3,4 outer ends, as seen in the figures 5a and 5b.
• the application belt 1 is made of a net and the rollers 3,4 preferably are arranged with stubs that protrude and grips into the meshes of the net.
• a similar arrangement with stubs may well be applied to the drive roller 6, which function well can be taken over by any of the rollers 3,4.
• One advantage with an arrangement with stubs at the drive roller 6 is that with the help of the stubs it is possible to transfer a high power to the application belt 1 without any tendency for slip.
• a correcting displacement similar to that between the support roller 3 and guide roller 4 may be utilised, though directed opposite between any of the rollers over which the application belt 1 is moving.
• This correction can also be accomplished by letting the guide roller 4 be able to adjust the tension of the application belt 1 by freely move any of its two ends in any way, x or y, axially seen, thereby also adding an extra force to the side-movement of the cylindrical element.
• FIG. 7 shows the wind-up device in a position where the guide roller 4 and support roller 3 are arranged in the same axial position.
• FIG 8 the same corresponding sketch as in figure 7 is shown although not in perspective. The difference is however that in this figure the guide roller 4 is displaced in relation to the support roller 3.
• the entrance to the feeding position 8 is made up of the gap that by necessity arises between the support roller 3 and the guide roller 4, and mentioned gap is thereby high enough for a stalling material to pass on its way towards the forming roller 2.
• the shaft-centre of the forming roller 2 is preferably arranged completely to the right of a vertical line T through the shaft-centres of the support roller 3 and the guide roller 4. The closer the support roller 3 and the guide roller 4 are to each other the longer the part of the application belt 1 that is engaging at the perimeter of the forming roller 2. Consequently also the force applied by the application belt 1 towards the starting material 27 will be more evenly distributed.
• the forming roller 2 as a whole is arranged beside a thought vertical line T.
• the support roller 3 and the guide roller 4 are arranged in a way that one of them, or both, directly support the forming roller 2, by the help of the force the application belt 1 and the starting material 27 push toward the forming roller 2, that is - the distance between the outer surface of the material on the forming roller 2 and the outer surfaces of the support roller 3 and/or the guide roller 4 are reasonably the same as the sum of the thickness of the application belt 1 and the thickness of the wound-up starting material 27.
• One advantage with this arrangement is that the force applied on the forming roller 2, by the application belt 1, is taken up by the support roller 3 and/or the guide roller 4, that is, the net force on the forming roller 2 is nil.
• both this force and that from it resulting momentum may be compensated by the bearing device 24 of the forming roller 2.
• the apparatus is arranged to use water-based binder at the making of the cylinder elements from the starting material 27.
• a nozzle 11 is arranged in vicinity of the feeding position 8 of the wind-up device.
• the add-on of binder may for ex. also be as solvent- free and water-free molten drops of a heat-hardening binder by a sputtering technique or as a molten string of a binder directly applied on the starting material 27 before the feeding of the material to the wind-up device.
• waterbased binders such as for ex. modified water-glass may give environmental advantages in comparison to temperature hardening binders as these latter may release environmentally harmful or poisonous substances at hardening and, in some cases, also after hardening, during use.
• Actual fibre types may be mineral fibres; comprising among all glass fibres, rock fibres and slag fibres, ceramic or organic fibres, taken from the vegetable kingdom or man-made, or mixes of them that may or may not be applied in different layers.
• One alternative is to completely exclude chemical binders for the binding between the fibres at the wind-up on the forming roller 2.
• a knitting device be arranged, not shown, at the entrance to the wind-up device, arranged to prick needles in newly fed starting material 27 and through earlier wound-up starting material 27 and thereby arranging a binding in the material itself and between the different layers of material at wind-up.
• some kind of binder may be needed though for the inner core and outer surface.
• a ventilating device 7 is arranged to distribute tempered and moisture controlled air that is preferably hot and dry air, over the starting material 27 in order to dry the material from water during harde ng.
• dry and hot water vapour may be utilised instead of dry air, especially if the starting material 27 is in advance prepared with for ex. a hot melt binder.
• the ventilating device 7 comprises a fan device 15 and a heating element 16.
• the mentioned application belt 1 is perforated and formed for ex as a net according to earlier described. Mentioned ventilating device 7 is then preferably arranged inside the endlessly moving application belt 1 and arranged to blow air towards that on the forming roller 2 wound-up starting material 27 through mentioned application belt 1. This arrangement gives the possibility to dry during wind-up, which lowers the need for later drying or a separate drying oven. Besides that, the outer surface may then be added directly after the wind-up process of the starting material 27, making it possible to construct a more compact apparatus.
• FIG 2 is shown, in view of perspective, another form of the invention whereas the application belt 1 in this view has been excluded for increased clarity.
• the forming roller 2 is suspended in one of its ends 21 with the other end free.
• the forming roller 2 is preferably suspended in a bearing device 24 which admits free rotation of the forming roller 2 around its rotational shaft. It may be of an advantage that one does not have to actively drive the forming roller 2 at a set rotational speed since this may demand a special control in regard to feeding speed, speed of the application belt 1 and so on.
• the forming roller 2 is also meant to be easily exchangeable, which brings the possibility to produce cylinder elements with varying inner diameter.
• the core winding device 25 comprises preferably a feeding device with a roller with what is to become the core.
• the core can be made of paper, foil or fibre felt or what is most suitable to stabilise and clearly define the starting material 27 and furthermore is most suited to be close to the tube that is to be insulated by the finished pipe insulation.
• the angle between the feeding belt 9 and the forming roller 2 is, as has been mentioned above, adjustable in order to make possible the wind-up of the starting material 27 in more or less denser rotations.
• an outer surface winding device 26 arranged for the wind-up of the outer surface.
• the outer surface winding device 26 consists mainly of a feeding device with surface material on a roller.
• the outer surface may preferably be aluminium foil, or aluminised foil or any other foil or paper or polymer foil which not only gives the finished cylinder element increased stiffness and sturdiness but also gives it a nice appearance and protection against moisture, wear and dirt and makes the finished product easier to work with and assemble.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)
• Nonwoven Fabrics (AREA)
• Rolls And Other Rotary Bodies (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20282199

Family Applications (1)

Country Status (3)

Cited By (2)

Citations (2)

• 2000
  • 2000-12-12 SE SE0004593A patent/SE516218C2/sv not_active IP Right Cessation
• 2001
  • 2001-12-11 AU AU2002222857A patent/AU2002222857A1/en not_active Abandoned
  • 2001-12-11 WO PCT/SE2001/002739 patent/WO2002048599A1/en not_active Application Discontinuation

Patent Citations (2)

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