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
  • B65H18/00—Winding webs
  • B65H18/08—Web-winding mechanisms
  • B65H18/26—Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H18/00—Winding webs
  • B65H18/08—Web-winding mechanisms
  • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
  • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/41—Winding, unwinding
  • B65H2301/414—Winding
  • B65H2301/4148—Winding slitting
  • B65H2301/41486—Winding slitting winding on two or more winding shafts simultaneously
  • B65H2301/414866—Winding slitting winding on two or more winding shafts simultaneously on bed rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/10—Means using fluid made only for exhausting gaseous medium
  • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/10—Means using fluid made only for exhausting gaseous medium
  • B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/10—Means using fluid made only for exhausting gaseous medium
  • B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
  • B65H2406/131—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material in combination with rollers or drums
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2408/00—Specific machines
  • B65H2408/20—Specific machines for handling web(s)
  • B65H2408/23—Winding machines
  • B65H2408/232—Winding beds consisting of two rollers
  • B65H2408/2321—Winding beds consisting of two rollers with winding bed supplied with vacuum or compressed air

Definitions

• the invention relates to a support roller winding machine according to the preamble of patent claim 1 and a method for winding material webs according to the preamble of patent claim 17.
• Carrier roll winding machines of this type are used for the axleless winding of material webs divided by longitudinal section, in particular of paper or cardboard, onto sleeves, the winding rolls resting in alignment on the support rolls during winding.
• axis reels in which a set of winding reels is held during winding by means of an axis that runs through all the sleeves, two guide heads are retracted from the outside into the sleeves of the outer winding reels during axleless reeling.
• the winding hardness should be as uniform as possible for the entire set of winding rolls and across the diameter of each individual winding roll and have a predetermined value which is exceeded in the known carrier roll winding machines from a certain diameter due to the increasing support weight and thus determines the maximum winding roll diameter.
• the sealing elements shown in DE-PS 11 11 496 are not suitable for use on support roller winding machines with axleless reeling, since they and their fastening elements are in the range of motion of the guide heads.
• the adjacent sealing roller creates a frictional connection between the two support rollers, which makes it no longer possible to set different torques to influence the winding quality.
• the invention has for its object to provide a generic roller winding machine with axleless winding, with which winding rolls with a large diameter and high winding quality can be produced. This object is achieved with the features of patent claim 1.
• the support roller winding machine has the advantages of an axleless reeling (no cumbersome handling of a heavy and long axle, especially in the case of large web widths; rapid reel changes) without the maximum winding reel diameter being limited to the known extent by the support weight.
• the relieving excess pressure also represents a further setting parameter by means of which the winding hardness can be controlled or regulated.
• the compressed air supply from below according to claim 2 advantageously allows the arrangement of the compressed air supply elements below the support rollers, on the other hand, the compressed air can also be blown in from below as sealing sealing air.
• the lowerable sealing element according to claim 3 can be lowered by means of lifting or pivoting elements. On the one hand, this serves to remove the sealing element from the support rollers, e.g. B. to remove paper residue after a paper jam. On the other hand, it can be lowered to such an extent that end-side sealing elements arranged on the upper side of the sealing element - as claimed in claim 5 - are no longer in the range of motion of the guide heads.
• Claim 5 contains an embodiment in which the end sealing elements can be moved axially from the area of the support rollers. The movement away from the area of the guide heads takes place either by a further axial movement outwards or by an additional lowering as soon as they have left the area of the support rollers.
• Claims 6 to 9 contain embodiments of the invention in which the end sealing elements are removed from the region of the guide heads by a pivoting movement.
• the division according to claim 7 has the advantage that less space is required for the respective pivoting movement.
• the sealing elements can already be used with a smaller winding diameter, in which the guide heads are located further down; d. H.
• the overpressure can already be used at an earlier winding time in order to influence the winding quality.
• the embodiment according to claim 8 with circular guides attached to swivel arms, on which the end sealing elements are mounted, is structurally advantageous and space-saving.
• a somewhat eccentric offset of the pivot axis to the support roller axes towards the outside in the claimed form has the effect that the sealing elements move somewhat away from the support rollers when pivoting.
• paper scraps e.g. B. after a paper jam
• the sealing elements are either attached to the inner end of the circular guides, which in this case are mounted so that they can be moved outwards in the swivel arms, or the swivel arms are angled, the apexes of the angles being outside the region of the support rollers. Then continuous, extending over the entire working width circular guides can be attached to the swivel arms to which the sealing elements are slidably attached are.
• the circular guides therefore do not need to be moved beyond the support rollers when the maximum web width is set (claim 9).
• the sealing elements provided with labyrinth seals according to claim 10 enable sealing without friction occurring with a winding roller or a supporting roller.
• the sealing effect can be increased by supplying sealing air.
• Claim 12 contains an embodiment of the sealing surfaces with sealing elements that achieve high sealing effects with only low friction.
• the particularly advantageous embodiment according to claims 13 to 16 enables lateral sealing with as little compressed air loss as possible at different overpressure values.
• An equilibrium of forces between the contact pressure by the pneumatic piston-cylinder unit and the counterforce by the overpressure can be set in such a way that a minimal gap between the sealing element and the end face of the outer winding roller automatically sets in. If the gap is due to a axial displacement of the winding roll is reduced or increased, the overpressure increases or decreases, so that the increased or reduced counterforce triggers a corrective movement of the sealing element.
• the pneumatic piston-cylinder unit is structurally advantageous at the same time for the axial displacement of the sealing elements to adapt to different web widths.
• an additional electric or hydraulic drive is provided for axial displacement.
• the method for winding material webs according to claim 17 enables the winding of winding rolls with a very large diameter, the regulation or control of the winding hardness being considerably simplified, since one of the decisive influencing variables, namely the line load on the two contact lines between the winding rolls and the support rolls, no longer changes.
• Fig. 1 shows schematically a side view of a support roller winding machine according to the invention.
• Fig. 8 shows schematically the side view of part of the support roller winding machine, in which the side sealing elements can be pressed pneumatically against the outer winding rollers.
• FIG. 9 shows a top view of the winding machine according to FIG. 8.
• the double carrier roller winding machine has two carrier rollers 2, 3 mounted in the machine frame 1. These are arranged axially parallel with a small distance from each other and extend over the entire working width, i. e. the maximum width of the web 4 to be wound up.
• the diameters of the support rollers 2, 3 are either different, then the axes of rotation are offset somewhat in height (FIGS. 1 to 3), or the diameters are the same, then the axes of rotation are in a horizontal plane (Figs. 4 to 10).
• a longitudinal cutting device 5 is used to divide the material web 4 into individual webs, from which winding rolls 6 are produced, which lie flush with one another on the two support rollers 2, 3 during winding.
• the web 4 is fed to the winding point either from below through the support roller nip (FIGS. 1, 4, 8) or from above, with a small wrap around a support roller (FIG. 6).
• approximately vertical guides 7 are fastened in the frame 1 for a carriage 9 which can be moved up and down by means of a piston-cylinder unit 8 and which carries an inwardly projecting guide head 10.
• the two guide heads 10 In order to guide the set of winding rollers 6 in the axial direction during winding, the two guide heads 10 each move from the outside into the two outer sleeves 11 before the start of winding and remain there until the winding rollers 6 are completely wound.
• the guide heads 10 are fastened axially displaceably on the carriage 9 by means of a drive.
• the carriage 9 carries a horizontally inwardly projecting hollow cylindrical guide, in which there is a pin which can be displaced axially by means of a spindle, to the end of which the guide head 10 is fastened.
• This construction is described in detail in U.S. Patent 4,483,493.
• the guides 7 run outside the area of the upper gusset between the two support rollers 2, 3 at a distance parallel to the vertical on the connecting line between the two support roller axes through the center of the support roller gap. They end somewhat above the connecting line between the two carrier roller axes.
• the guide heads 10 can thus move into sleeves 11 which are in the gusset between the two support rollers 2, 3.
• the machine has a reel ejection bar 12 and a lowering platform 13, which picks up the finished winding reels 6 and lowers them for unloading.
• a separating knife 14 can be arranged below the support rollers 2, 3 for cutting the web 4, as shown in FIG. 6, through the support roller nip.
• an air box 15 with a compressed air supply in all the embodiments shown in the drawing, which extends at least over the area of the minimum width of the web 4 and has outlet openings on its upper boundary surface facing the winding rollers 6 for the compressed air.
• the air box 15 is on its underside on lifting or pivoting elements attached so that it can be lowered. If underneath the support rollers 2, 3 a separating knife 14 which can be raised by the support roller nip is arranged, swivel arms 16 are attached to the air box 15, which enable pivoting down to below a support roller (support roller 3 in FIGS. 4 and 8) in order to provide space for starting up the Cutting knife 14 to create.
• the air box 15 is lowered by means of lifting elements (lifting cylinder 17) (FIGS. 1, 6).
• the side surfaces of the upper part of the air box 15 facing the support rollers 2, 3 are curved to match the surfaces of the support rollers 2, 3, only a small gap remaining in the sealing position to avoid friction.
• the side surfaces On their sides facing the support rollers 2, 3, the side surfaces have a plurality of grooves which run parallel to the support roller axes and which act as a labyrinth seal running transversely to the direction of flow of compressed air flowing out.
• the height of the sealing side surfaces is adapted to the required sealing performance. It can be smaller on the side of the support roller 2, which moves into the upper gusset, than on the other side, because due to the direction of rotation with the support roller 2 or the web 4 located thereon, air which counteracts the outflow is carried along.
• the top of the air box 15 simultaneously serves as a guide surface for two end sealing elements 18 which are axially displaceably fastened thereon on both sides of the machine.
• the sealing elements 18 in the axial direction up to the area of the support rollers 2, 3 can be driven out, the air box 15 protrudes on both sides of the machine beyond the support rollers 2, 3, as shown in FIGS. 2 and 3.
• the shape of the end sealing elements 18 is adapted to the free cross-sectional area between the support rollers 2, 3, the upper part being extended in a rectangular shape to above the connecting line between the two apexes of the support rollers 2, 3, in order to accommodate winding rollers 6 large diameter ensure an adequate sealing surface ⁇ u.
• the extended part is provided on the side facing the end faces of the winding rollers 6 with grooves which sufficiently reduce compressed air losses in the manner described above as a labyrinth seal.
• Grooves are also provided on the curved sides facing the support rollers 2, 3. They also run transversely to the possible outflow direction, ie approximately according to the circumference of the adjacent support roller 2, 3.
• the sealing elements 18 move laterally next to the guides 7 so that they can be moved against the end faces of the winding rollers 6, one in the sealing position small gap remains so that no friction occurs.
• displacement elements for example a drivable spindle
• the sealing elements 18 can be moved outwards so far that the slides 9 with the guide heads 10 can be lowered into the gusset between the two support rollers 2, 3 in order to move into empty sleeves 11 lying there.
• the air box 15 with the sealing elements 18 can be lowered so far that the upper edges of the sealing elements 18 are below the narrowest point between the two support rollers 2, 3.
• the air box 15 thus only needs to extend to a lesser extent beyond the ends of the support rollers 2, 3.
• the axial movement of the sealing elements 18 to the outermost ends of the air box 15 then only allow a subsequent lowering - either by pivoting or a linear lowering (FIG. 1) - which creates the space required for the slide 9.
• the sealing elements 18 are connected on both sides of the machine with swivel arms 19, 20, the leg axes 21, 22 of which either coincide with the respective support roller axis or extend somewhat eccentrically outwards on the connecting line between the two support roller axes.
• the low eccentricity means that the side surfaces of the sealing elements 18 facing the support rollers 2 or 3 move somewhat away from the respective support roller surface when swiveling out, in order to, for. B. To be able to remove paper residue. If it is necessary to move the sealing elements 18 further away from the support rollers, they are attached to double levers. Also in the embodiments according to FIGS. 4 to 7, the sides of the sealing elements 18 and the air box 15 facing the support rollers 2, 3 and the end faces of the winding rollers 6 are provided with the labyrinth seals described above.
• the levers 19 pivotable about the outlet-side support roller 3 carry a one-piece sealing element 18 on each machine side.
• the levers 23 are angled at their ends, so that they are in the pivoted-in position between the support rollers 2, 3 run approximately horizontally.
• two round guides 23 are axially displaceably mounted, on the inner ends of which the sealing elements 18 are fastened.
• each sealing element on the outside is 18 divided along the vertical by the center of the nip.
• Each of the parts 24, 25 is fastened to a swivel arm 19, 20 which can be swiveled over the adjacent support roller 2, 3. The pivoting movement thus requires less space, as shown in FIG. 6, so that the sealing element 18 can be used at an earlier point in time.
• the sealing elements 18 are mounted axially - that is to say transversely to the web 4 - on levers 19 pivotable about the outlet-side support roller 3. They can thus be moved out of the lower working area of the guide heads 10 by swiveling over the support roller 3 (shown in broken lines in FIG. 8).
• the swivel levers 19 are angled at their free ends so that they extend approximately horizontally in the swiveled-in position between the support rollers 2, 3. Its pivot axis 25 runs somewhat eccentrically outwards on the connecting line between the two carrier roller axes.
• the low eccentricity means that the side surfaces of the sealing elements 18 facing the support rollers 2 or 3 move somewhat away from the respective support roller surface when swiveling out, in order to, for. B.
• two round guides 23 are axially slidably mounted, on the inner ends of which the sealing elements 18 are fastened.
• the piston 26 of a pneumatic piston-cylinder unit is fastened on the upper side of the swivel lever 19.
• the end of the piston rod 27 is mounted on the sealing element 18 so as to be movable about both axes perpendicular to the guides 23.
• an axis 28 is attached to the top of the sealing elements 18, which is guided through the eye of the piston rod 27.
• the pneumatic piston-cylinder unit 26, 27 is for the axial displacement of the sealing elements 18 and for setting one controllable contact pressure connected to a control device, not shown.
• the piston-cylinder unit 26, 27 is used both for the axial displacement of the sealing elements 18 for adaptation to different web widths and for pressing against the winding rollers 6. It is also possible to perform these two tasks by separate drives. An electrical or hydraulic drive for axial displacement is then attached to the swivel levers 19 and is connected to the sealing elements 18 via the pneumatic piston-cylinder units 26, 27.
• the swivel arms carrying the sealing elements 18 are angled, the apexes of the angles being outside the region of the support rollers 2, 3. At the apex of the angle, the ends of guides extending over the entire length of the support rollers 2, 3 are fastened, on which the sealing elements 18 are slidably mounted. The guides are therefore no longer moved in the axial direction for adjustment to different web widths.
• the pressure roller 26 is additionally pressed in the direction of the support rollers 2, 3.
• an excess pressure is generated in the space delimited by the support rollers 2, 3 and the winding rollers 6 by introducing compressed air, which reduces the support weight.
• they have Winding rolls 6 already have a sufficiently large diameter (approx. 800 mm) so that their sleeves 11 and thus the slide 9 are located at a sufficiently large distance above the support rollers 2, 3 in order to avoid a collision with the sealing elements 18.
• the air box 15 is first moved up into the lower gusset between the support rollers 2, 3, so that the side surfaces of the air box 15 except for a narrow gap on the support rollers 2, 3 3 put on and seal down. Then the end sealing elements 18 are moved upward and inward until only a narrow gap to the end faces of the winding rolls 6 remains free and thus these sides are also sealed. Compressed air is now introduced via the air box 15 until such a high pressure has built up under the winding rollers 6 that the bearing weight of the winding rollers 6 is reduced to the desired level.
• compressed air is first introduced via the swung-up air box 15, and then the sealing elements 18 are moved axially against the end faces of the winding rollers 6 by means of the piston-cylinder unit 26, 27.
• the pressure in the piston 26 is controlled in such a way that an equilibrium of forces is established in the build-up overpressure such that a small gap remains between the sealing elements 18 and the winding rollers 6. This prevents friction with minimal compressed air losses. If the gap width z. B. enlarged or reduced due to an axial displacement of the winding rollers 6, the overpressure falls or rises under the winding rollers 6 due to the increased or reduced compressed air losses.
• the resulting pressure difference to the pressure in the pneumatic piston-cylinder unit 26, 27 automatically leads to a correction of the gap width until the balance of forces is restored.
• a small gap between the sealing elements 18 and the winding rollers 6 can also be maintained so that a small distance to the position of the guide heads 10 is automatically set.
• the support weight of the winding rolls 6 is preferably kept constant during the winding.
• the excess pressure under the winding rollers 6 is increased from the desired support weight in such a way that the weight increase is permanently compensated for.
• the regulation or control of the winding hardness is simplified considerably since one of the decisive influencing variables, namely the line load at the two contact lines between the winding rollers 6 and the support rollers 2, 3, no longer changes.
• the support weight can be reduced step by step by building up a corresponding overpressure in order to keep the support weight in a certain range.
• the increase in the weight of the support can only be partially compensated for or the relief can be carried out according to a predetermined function. A one-time reduction by a constant value may be sufficient.
• the build-up of overpressure in any case offers a further parameter for controlling the winding hardness of the winding rolls 6.
• the pressure in the pneumatic piston-cylinder units 26, 27 is also increased by the control device in accordance with the increasing overpressure, so that the distance between the sealing elements 18 and the winding rollers 6 remains constant.
• sealing elements such as brushes, rubber lips, felt pads, etc.
• the friction on the support rollers 2, 3 and the winding rollers 6 can be kept sufficiently small; either in that the sealing elements abut the winding rollers 6 and the support rollers 2, 3 with low friction or are positioned at such a small distance from them that the compressed air losses are acceptably low.
• sealing it is important that the sealing elements do not interfere with the rotary movements of the two support rollers 2, 3 independently of one another, in particular no frictional connection between the two support rollers 2, 3 is made. Otherwise, different torques of the support rollers 2, 3, which are required to influence the winding quality, could no longer be regulated to the required extent.

Landscapes

• Winding Of Webs (AREA)
• Replacement Of Web Rolls (AREA)
• Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
• Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
• Photoreceptors In Electrophotography (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)
• Reciprocating Pumps (AREA)
• Lubricants (AREA)

Priority Applications (5)

Applications Claiming Priority (4)

Publications (1)

Family

ID=25896127

Family Applications (1)

Country Status (9)

Cited By (16)

Families Citing this family (7)

Citations (3)

• 1991
  • 1991-03-27 DE DE4110047A patent/DE4110047A1/de not_active Withdrawn
  • 1991-08-16 JP JP3513543A patent/JP2974773B2/ja not_active Expired - Fee Related
  • 1991-08-16 CA CA002069898A patent/CA2069898C/en not_active Expired - Fee Related
  • 1991-08-16 AT AT91914763T patent/ATE130580T1/de not_active IP Right Cessation
  • 1991-08-16 BR BR919105875A patent/BR9105875A/pt not_active IP Right Cessation
  • 1991-08-16 ES ES91914763T patent/ES2083587T5/es not_active Expired - Lifetime
  • 1991-08-16 WO PCT/EP1991/001555 patent/WO1992003366A1/de active IP Right Grant
  • 1991-08-16 EP EP91914763A patent/EP0496863B2/de not_active Expired - Lifetime
  • 1991-08-16 DE DE9116308U patent/DE9116308U1/de not_active Expired - Lifetime
  • 1991-08-16 DE DE59106948T patent/DE59106948D1/de not_active Expired - Lifetime
• 1992
  • 1992-04-22 FI FI921789A patent/FI108858B/fi not_active IP Right Cessation

Patent Citations (3)

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