EP0496863B1 - King roll reeling machine - Google Patents

King roll reeling machine Download PDF

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Publication number
EP0496863B1
EP0496863B1 EP91914763A EP91914763A EP0496863B1 EP 0496863 B1 EP0496863 B1 EP 0496863B1 EP 91914763 A EP91914763 A EP 91914763A EP 91914763 A EP91914763 A EP 91914763A EP 0496863 B1 EP0496863 B1 EP 0496863B1
Authority
EP
European Patent Office
Prior art keywords
carrier
sealing elements
rolls
winding machine
winding
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 - Lifetime
Application number
EP91914763A
Other languages
German (de)
French (fr)
Other versions
EP0496863B2 (en
EP0496863A1 (en
Inventor
Herbert Schönmeier
Peter Hoffmann
Hartmut Dropczynski
Reinhard SCHÖNEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Paper Jagenberg GmbH
Original Assignee
Jagenberg Papiertechnik GmbH
Jagenberg AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority claimed from DE19904026597 external-priority patent/DE4026597A1/en
Application filed by Jagenberg Papiertechnik GmbH, Jagenberg AG filed Critical Jagenberg Papiertechnik GmbH
Publication of EP0496863A1 publication Critical patent/EP0496863A1/en
Application granted granted Critical
Publication of EP0496863B1 publication Critical patent/EP0496863B1/en
Publication of EP0496863B2 publication Critical patent/EP0496863B2/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • 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 claim 1.
  • a support roller winding machine is known from DE-A-1 047 001.
  • 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, in the known carrier roll winding machines, is exceeded from a certain diameter onwards 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.
  • 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 lowerable sealing element according to claim 2 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.
  • separating knife Due to the pivoting of the sealing elements below into the area below a support roller according to claim 3, free space is created for a separating knife that can be raised from below through the support roller nip when changing rolls. Such separating knives can be used if the web is fed from below through the support roller nip.
  • Claim 4 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.
  • the claims 5 to 8 contain embodiments of the invention, in which the front side sealing elements can be removed from the area of the guide heads by a swiveling movement.
  • the division according to claim 6 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; ie the overpressure can already be used at an earlier winding point in order to influence the winding quality.
  • the embodiment according to claim 7 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.
  • Continuous round guides extending over the entire working width can then be attached to the swivel arms, to which the sealing elements are slidably attached.
  • the circular guides therefore do not need to be moved beyond the support rollers when set to the maximum web width (claim 8).
  • the sealing elements provided with labyrinth seals enable sealing without friction occurring with a winding roller or a support roller.
  • the sealing surfaces of the sealing elements having outlet openings for compressed air directed against the outflow direction, 11 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 so that a minimal gap between the sealing element and the end face of the outer winding roll is automatically set. If the gap decreases or increases due to an axial displacement of the winding roller, the overpressure rises or falls, 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 carrier roller winding machine for winding material webs enables the winding of winding rollers 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 rollers and the Carrier rollers, no longer changed.
  • 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, ie the maximum width of the web 4.
  • 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 (FIG. 4 until 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.
  • a pin which can be displaced axially by means of a spindle, to the end of which the guide head 10 is fastened.
  • 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. As soon as the lower edges of the slides 9 have moved sufficiently far upwards on the guides 7 with the sleeves 11 as the winding rollers 6 become larger, there is free space on both sides of the machine above the support rollers 2, 3 to prevent collisions with sealing elements described in more detail later avoid.
  • 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 of 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 attached on its underside to lifting or pivoting elements 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 allow 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 extending 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 upper side 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 elongated in a rectangular shape up to above the connecting line between the two vertices of the support rollers 2, 3, to ensure a sufficient sealing surface for winding rollers 6 with a large diameter.
  • 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, that is to say approximately in accordance with the circumference of the respective 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 carriages 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 19 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 end sealing element 18 is subdivided along the vertical through the center of the support roller 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. To be able to remove paper residue.
  • 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 levers 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 connected to a control device (not shown) for the axial displacement of the sealing elements 18 and for setting a controllable contact pressure.
  • 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 apexes of the angles, 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.
  • the 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 to prevent a collision with the sealing elements 18 avoid.
  • 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 number of copies can also be increased weight are only partially compensated for or the relief is carried out according to a specified 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.
  • the labyrinth seals on the sealing surfaces both in the upper gusset and in the lower gusset between the support rollers 2, 3, it is possible to seal with sealing air through suitably selected outlet openings for compressed air.
  • the sealing effect of the labyrinth seals can be increased by supplying sealing air in their grooves.
  • 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.
  • the sealing elements do not affect 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)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Reciprocating Pumps (AREA)
  • Lubricants (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

The known king roll reeling machines for shaftless winding of a web of material (4) divided by a lengthwise cut, in particular a web of paper of cardboard, onto sleeves (11) have take-up rollers (6) which are applied during take-up to two king rolls (2, 3) and are supported by guide heads (10) which can be inserted sideways into the sleeves of the two outer take-up rollers (6). The take-up rollers (6) can only be wound with high winding quality up to a maximum diameter. According to the invention, the space delimited by the king rolls (2, 3) and the take-up rollers (6) is sealed and an overpressure is produced in the space. To this end, sealing elements (18) which can be displaced axially to suit webs of different widths and which can be moved simultaneously in an area outside the area of movement of the guide heads (10) and their fastener (carriage (9)) are arranged in the region of the two side ends of the king rolls (2, 3). Frictional engagement between the king rolls is prevented when the sealing elements (15, 18) are in the sealing position.

Description

Die Erfindung betrifft eine Tragwalzen-Wickelmaschine gemäß dem Oberbegriff des Patentanspruchs 1. Eine solche Tragwalzen-Wickelmaschine ist aus DE-A-1 047 001 bekannt.The invention relates to a support roller winding machine according to the preamble of claim 1. Such a support roller winding machine is known from DE-A-1 047 001.

Derartige Tragwalzen-Wickelmaschinen dienen zum achslosen Aufwickeln von durch Längsschnitt unterteilten Materialbahnen, insbesondere aus Papier oder Karton, auf Hülsen, wobei die Wickelrollen beim Aufwickeln auf den Tragwalzen fluchtend aufgereiht aufliegen. Anders als bei den sogenannten Achsaufrollungen, bei denen ein Satz Wickelrollen beim Aufwickeln mittels einer durch alle Hülsen durchgehenden Achse gehalten wird, werden beim achslosen Aufwickeln zwei Führungsköpfe von außen in die Hülsen der äußeren Wickelrollen eingefahren.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. In contrast to the so-called 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.

Stand der TechnikState of the art

Aus der DE-A-36 18 955 bekannten Tragwalzen-Wickelmaschinen lassen sich Wickelrollen mit der geforderten Wickelqualität nur bis zu einem bestimmten Durchmesser herstellen. Dies hat seine Ursache darin, daß die Wickelhärte einer Wickelrolle entscheidend von der Linienlast (= Auflagegewicht pro Breite einer Wickelrolle) an den beiden Auflagelinien der Wickelrollen auf den Tragwalzen beeinflußt wird.DE-A-36 18 955 known carrier roll winding machines can only produce winding rolls with the required winding quality up to a certain diameter. This is due to the fact that the winding hardness of a winding roller is decisively influenced by the line load (= support weight per width of a winding roller) on the two support lines of the winding rollers on the support rollers.

Die Wickelhärte soll für den gesamten Satz von Wickelrollen und über den Durchmesser jeder einzelnen Wickelrolle möglichst gleichmäßig sein und einen vorher bestimmten Wert haben, der bei den bekannten Tragwalzen-Wickelmaschinen ab einem bestimmten Durchmesser aufgrund des steigenden Auflagegewichts überschritten wird und so den maximalen Wickelrollendurchmesser bestimmt.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, in the known carrier roll winding machines, is exceeded from a certain diameter onwards due to the increasing support weight and thus determines the maximum winding roll diameter.

Zur Entlastung des Eigengewichts bei Tragwalzen-Wickelmaschinen mit einer Achsaufrollung ist es aus der DE-PS 11 11 496 bekannt, in dem durch die Tragwalzen und die Wickelrolle begrenzten Raum einen Überdruck zu erzeugen. Zur seitlichen Abdichtung des Hohlraumes dienen der Form der Tragwalzen angepaßte Abdeckbleche, die verschiebbar sind, um an die Stirnseiten der Wickelrollen angelegt werden zu können. Die Abdichtung von unten erfolgt mit einer beide Tragwalzen tangierenden Walze oder Walzengruppe.To relieve the dead weight in support roller winding machines with an axle winder, it is known from DE-PS 11 11 496 to generate an overpressure in the space delimited by the support rollers and the winding roller. Cover plates adapted to the shape of the support rollers serve for lateral sealing of the cavity and are displaceable so that they can be placed on the end faces of the winding rolls. Sealing from below is carried out with a roller or roller group tangent to both carrier rollers.

Die in der DE-PS 11 11 496 gezeigten Dichtelemente sind zum Einsatz an Tragwalzen-Wickelmaschinen mit achsloser Aufrollung nicht geeignet, da sie und ihre Befestigungselemente sich im Bewegungsbereich der Führungsköpfe befinden. Darüber hinaus wird durch die anliegende Dichtwalze eine reibschlüssige Verbindung zwischen den beiden Tragwalzen hergestellt, die eine Einstellung unterschiedlicher Drehmomente zur Beeinflussung der Wickelqualität nicht mehr möglich macht.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. In addition, 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.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Tragwalzen-Wickelmaschine mit achsloser Aufrollung zu schaffen, mit der sich Wikkelrollen mit großem Durchmesser und hoher Wikkelqualität herstellen lassen.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.

Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of patent claim 1.

Die erfindungsgemäße Tragwalzen-Wickelmaschine weist die Vorteile einer achslosen Aufrollung (kein umständliches Handling einer schweren und langen Achse, insbesondere bei großen Bahnbreiten; schnelle Rollenwechsel) auf, ohne daß der maximale Wickelrollendurchmesser durch das Auflagegewicht in dem bekannten Maße begrenzt ist. Der entlastende Überdruck stellt darüber hinaus einen weiteren Einstellparameter dar, über den die Wickelhärte gesteuert oder geregelt werden kann.The support roller winding machine according to the invention 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.

Die Unteransprüche enthalten bevorzugte, da besonders vorteilhafte Ausführungsformen der Erfindung:

  • Die Druckluftzufuhr von unten ermöglicht zum einen vorteilhaft die Anordnung der Druckluft zuführenden Elemente unterhalb der Tragwalzen, zum anderen kann die Druckluft von unten zusätzlich als abdichtende Sperrluft eingeblasen werden.
The subclaims contain preferred, since particularly advantageous, embodiments of the invention:
  • The compressed air supply from below 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.

Die Absenkbarkeit des unten abdichtenden Elementes nach Patentanspruch 2 kann mittels Hub-oder Schwenkelementen erfolgen. Dies dient zum einen dazu, das Dichtelement von den Tragwalzen zu entfernen, z. B. um Papierreste nach einem Papierstau zu entfernen. Zum anderen kann so weit abgesenkt werden, daß auf der Oberseite des Dichtelementes angeordnete stirnseitige Dichtelemente - wie in Patentanspruch 5 beansprucht - sich nicht mehr im Bewegungsbereich der Führungsköpfe befinden.The lowerable sealing element according to claim 2 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.

Durch die Schwenkbarkeit der unten abdichtenden Elemente bis in den Bereich unterhalb einer Tragwalze nach Anspruch 3 wird Freiraum für ein bei einem Rollenwechsel von unten durch den Tragwalzenspalt hochfahrbares Trennmesser geschaffen. Derartige Trennmesser lassen sich einsetzen, sofern die Zuführung der Bahn von unten durch den Tragwalzenspalt erfolgt.Due to the pivoting of the sealing elements below into the area below a support roller according to claim 3, free space is created for a separating knife that can be raised from below through the support roller nip when changing rolls. Such separating knives can be used if the web is fed from below through the support roller nip.

Anspruch 4 enthält eine Ausführungsform, bei der die stirnseitigen Dichtelemente axial aus dem Bereich der Tragwalzen bewegt werden können. Die Wegbewegung aus dem Bereich der Führungsköpfe erfolgt dabei entweder durch eine weitergehende axiale Bewegung nach außen oder durch eine zusätzliche Absenkung, sobald sie den Bereich der Tragwalzen verlassen haben.Claim 4 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.

Die Patentansprüche 5 bis 8 enthalten Ausgestaltungen der Erfindung, bei denen die stirnseitigen Dichtelemente durch eine Schwenkbewegung aus dem Bereich der Führungsköpfe entfernt werden. Die Unterteilung nach Anspruch 6 hat den Vorteil, daß für die jeweilige Schwenkbewegung weniger Raum benötigt wird. Somit können die Dichtelemente bereits bei einem geringeren Wikkeldurchmesser eingesetzt werden, bei dem sich die Führungsköpfe noch weiter unten befinden; d. h. der Überdruck kann bereits zu einem früheren Wickelzeitpunkt eingesetzt werden, um auf die Wickelqualität Einfluß zu nehmen.The claims 5 to 8 contain embodiments of the invention, in which the front side sealing elements can be removed from the area of the guide heads by a swiveling movement. The division according to claim 6 has the advantage that less space is required for the respective pivoting movement. Thus, the sealing elements can already be used with a smaller winding diameter, in which the guide heads are located further down; ie the overpressure can already be used at an earlier winding point in order to influence the winding quality.

Die Ausgestaltung nach Patentanspruch 7 mit an Schwenkarmen befestigten Rundführungen, an denen die stirnseitigen Dichtelemente gelagert sind, ist konstruktiv vorteilhaft und platzsparend. Eine etwas exzentrische Versetzung der Schwenkachse zu den Tragwalzenachsen nach außen in der beanspruchten Form bewirkt dabei, daß sich die Dichtelemente beim Schwenken über eine der Tragwalzen etwas von dieser entfernen. Somit können Papierreste, z. B. nach einem Papierstau, problemlos entfernt werden. Dabei sind die Dichtelemente entweder am inneren Ende der Rundführungen befestigt, die in diesem Fall in den Schwenkarmen nach außen verschiebbar gelagert sind, oder die Schwenkarme sind abgewinkelt, wobei sich die Scheitelpunkte der Winkel außerhalb des Bereichs der Tragwalzen befinden. Dann können durchgehende, sich über die gesamte Arbeitsbreite erstrekkende Rundführungen an den Schwenkarmen befestigt werden, an denen die Dichtelemente verschiebbar befestigt sind. Die Rundführungen brauchen somit bei Einstellung auf maximale Bahnbreite nicht über die Tragwalzen hinaus bewegt werden (Patentanspruch 8).The embodiment according to claim 7 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. Thus, paper scraps, e.g. B. after a paper jam, can be easily removed. 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. Continuous round guides extending over the entire working width can then be attached to the swivel arms, to which the sealing elements are slidably attached. The circular guides therefore do not need to be moved beyond the support rollers when set to the maximum web width (claim 8).

Die mit Labyrinthdichtungen versehenen Dichtelemente ermöglichen ein Abdichten, ohne daß Reibung mit einer Wickelrolle oder einer Tragwalze auftritt. Bei einer, Ausgestaltung, wobei die Dichtflächen der Dichtelemente gegen die Ausströmrichtung gerichtete Austrittsöffnungen für Druckluft aufweisen, 11 läßt sich durch Zufuhr von Sperrluft die Dichtwirkung steigern.The sealing elements provided with labyrinth seals enable sealing without friction occurring with a winding roller or a support roller. In one embodiment, the sealing surfaces of the sealing elements having outlet openings for compressed air directed against the outflow direction, 11 the sealing effect can be increased by supplying sealing air.

Der Patentanspruch 12 enthalt eine Ausgestaltung der Dichtflächen mit Dichtelementen, die hohe Dichtwirkungen bei nur geringer Reibung erzielen.Claim 12 contains an embodiment of the sealing surfaces with sealing elements that achieve high sealing effects with only low friction.

Die besonders vorteilhafte Ausgestaltung nach den Ansprüchen 13 bis 16 ermöglicht eine seitliche Abdichtung mit möglichst geringen Druckluftverlusten bei unterschiedlichen Überdruckwerten. Es läßt sich ein Kräftegleichgewicht zwischen der Anpreßkraft durch die pneumatische Kolben-Zylinder-Einheit und der Gegenkraft durch den Überdruck so einstellen, daß sich selbsttätig ein minimaler Spalt zwischen dem Dichtelement und der Stirnseite der äußeren Wickelrolle einstellt. Falls der Spalt sich aufgrund einer axialen Verschiebung der Wikkelrolle verringert oder vergrößert, steigt oder fällt der Überdruck, so daß die erhöhte oder verringerte Gegenkraft eine korrigierende Bewegung des Dichtelements auslöst.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 so that a minimal gap between the sealing element and the end face of the outer winding roll is automatically set. If the gap decreases or increases due to an axial displacement of the winding roller, the overpressure rises or falls, so that the increased or reduced counterforce triggers a corrective movement of the sealing element.

Nach Patentanspruch 11 dient die pneumatische Kolben-Zylinder-Einheit konstruktiv vorteilhaft zugleich zur axialen Verschiebung der Dichtelemente zur Anpassung an verschiedene Bahnbreiten. Bei der Ausgestaltung nach Anspruch 12 ist zur axialen Verschiebung ein zusätzlicher elektrischer oder hydraulischer Antrieb vorgesehen.According to claim 11, 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. In the embodiment according to claim 12, an additional electric or hydraulic drive is provided for axial displacement.

Die bewegliche Befestigung der pneumatischen Kolben-Zylinder-Einheiten um die Achsen senkrecht zu der achsparallelen Führung nach Anspruch 13 gewährleistet, daß sich die Dichtelemente an den Führungen frei bewegen können.The movable attachment of the pneumatic piston-cylinder units around the axes perpendicular to the axially parallel guide according to claim 13 ensures that the sealing elements can move freely on the guides.

Die Tragwalzen-Wickelmaschine zum Aufwikkeln von Materialbahnen nach der Erfinding ermöglicht das Aufwickeln von Wickelrollen mit sehr großem Durchmesser, wobei die Regelung oder Steuerung der Wickelhärte erheblich vereinfacht ist, da eine der entscheidenden Einflußgrößen, nämlich die Linienlast an den beiden Kontaktlinien zwischen den Wickelrollen und den Tragwalzen, sich nicht mehr verändert.The carrier roller winding machine for winding material webs according to the invention enables the winding of winding rollers 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 rollers and the Carrier rollers, no longer changed.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Die Zeichnung dient zur Erläuterung der Erfindung anhand vereinfacht dargestellter Ausführungsbeispiele.

  • Fig. 1 zeigt schematisch eine Seitenansicht einer erfindungsgemäßen Tragwalzen-Wickelmaschine.
  • Die Fig. 2 und 3 zeigen ausschnittsweise den zugehörigen Querschnitt, wobei sich die axiale Länge des Luftkastens unterscheidet.
  • Die Fig. 4, 5 bzw. 6, 7 zeigen zwei weitere Ausführungsformen jeweils in Seitenansicht und Draufsicht, wobei nur die für die Erfindung wesentlichen Teile dargestellt sind.
  • Fig. 8 zeigt schematisch die Seitenansicht eines Teils der Tragwalzen-Wickelmaschine, bei der die seitlichen Dichtelemente pneumatisch gegen die äußeren Wickelrollen andrückbar sind.
  • Fig. 9 zeigt eine Draufsicht der Wickelmaschine nach Fig. 8.
  • Fig. 10 einen vergrößerten Ausschnitt von Fig. 9.
The drawing serves to explain the invention on the basis of simplified exemplary embodiments.
  • Fig. 1 shows schematically a side view of a support roller winding machine according to the invention.
  • 2 and 3 show sections of the associated cross section, the axial length of the air box being different.
  • 4, 5 and 6, 7 show two further embodiments, each in side view and top view, only the parts essential to the invention being shown.
  • 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.
  • 10 is an enlarged section of FIG. 9.

Wege zur Ausführung der ErfindungWays of Carrying Out the Invention

Die Doppeltragwalzen-Wickelmaschine, von der nur die sich auf die Erfindung beziehenden Teile im einzelnen beschrieben sind, weist zwei im Maschinengestell 1 gelagerte Tragwalzen 2, 3 auf. Diese sind achsparallel mit geringem Abstand voneinander angeordnet und erstrecken sich über die gesamte Arbeitsbreite, i. e. die maximale Breite der aufzuwickelnden Bahn 4. Die Durchmesser der Tragwalzen 2, 3 sind entweder unterschiedlich, dann sind die Drehachsen etwas in der Höhe versetzt (Fig. 1 bis 3), oder die Durchmesser sind gleich, dann liegen die Drehachsen in einer horizontalen Ebene (Fig. 4 bis 10). Eine Längsschneideeinrichtung 5 dient zum Aufteilen der Materialbahn 4 in Einzelbahnen, aus denen Wickelrollen 6 hergestellt werden, die beim Aufwickeln auf den beiden Tragwalzen 2, 3 fluchtend aneinandergereiht aufliegen. Die Zuführung der Bahn 4 an die Wickelstelle erfolgt entweder von unten durch den Tragwalzenspalt (Fig. 1, 4, 8) oder von oben, mit geringer Umschlingung einer Tragwalze (Fig. 6).The double carrier roller winding machine, of which only the parts relating to the invention are described in detail, 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, ie the maximum width of the web 4. 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 (FIG. 4 until 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).

An beiden Seiten der Maschine sind im Gestell 1 in etwa senkrechte Führungen 7 für einen mittels einer Kolben-Zylinder-Einheit 8 hoch- und niederbewegbaren Schlitten 9 befestigt, der einen nach innen ragenden Führungskopf 10 trägt. Um den Satz Wickelrollen 6 beim Aufwickeln in axialer Richtung zu führen, fahren die beiden Führungsköpfe 10 jeweils vor Wickelbeginn von außen in die beiden äußeren Hülsen 11 ein und verbleiben dort bis die Wickelrollen 6 fertig gewickelt sind. Zum Einfahren in die leeren Hülsen 11 und zur Anpassung an unterschiedliche Bahnbreiten sind die Führungsköpfe 10 an den Schlitten 9 mittels eines Antriebs axial verschiebbar befestigt. Dazu trägt der Schlitten 9 eine waagerecht nach innen ragende hohlzylinderförmige Führung, in der sich ein mittels einer Spindel axial verschiebbarer Zapfen befindet, an dessen Ende der Führungskopf 10 befestigt ist. Diese Konstruktion ist detailliert in der US-PS 4,483,493 beschrieben.On both sides of the machine, 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. 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. To move into the empty sleeves 11 and to adapt to different web widths, the guide heads 10 are fastened axially displaceably on the carriage 9 by means of a drive. For this purpose, 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.

Die Führungen 7 verlaufen außerhalb des Bereichs des oberen Zwickels zwischen den beiden Tragwalzen 2, 3 mit Abstand parallel zur Senkrechten auf die Verbindungslinie zwischen den beiden Tragwalzenachsen durch die Mitte des Tragwalzenspalts. Sie enden etwas oberhalb der Verbindungslinie zwischen den beiden Tragwalzenachsen. Die Führungsköpfe 10 können so in Hülsen 11 einfahren, die im Zwickel zwischen den beiden Tragwalzen 2, 3 liegen. Sobald die Unterkanten der Schlitten 9 sich mit den Hülsen 11 bei größer werdenden Wickelrollen 6 an den Führungen 7 ausreichend weit nach oben bewegt haben, ist an beiden Seiten der Maschine oberhalb der Tragwalzen 2, 3 Freiraum vorhanden, um Kollisionen mit später näher beschriebenen Dichtelementen zu vermeiden.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. As soon as the lower edges of the slides 9 have moved sufficiently far upwards on the guides 7 with the sleeves 11 as the winding rollers 6 become larger, there is free space on both sides of the machine above the support rollers 2, 3 to prevent collisions with sealing elements described in more detail later avoid.

Zum Rollenwechsel weist die Maschine einen Rollenausstoßbalken 12 und eine Absenkbühne 13 auf, die die fertigen Wickelrollen 6 aufnimmt und zum Entladen absenkt. Bei Bahnzufuhr von unten kann unterhalb der Tragwalzen 2, 3 ein durch den Tragwalzenspalt hochfahrbares Trennmesser 14 zum Durchtrennen der Bahn 4 angeordnet sein, wie in Fig. 6 eingezeichnet ist.To change the reel, 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. When the web is fed in from below, 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.

Zur Verminderung des Auflagegewichts der Wickelrollen 6 auf den Tragwalzen 2, 3 kann in dem durch die Tragwalzen 2, 3 und die Wickelrollen 6 begrenzten Raum mit Druckluft ein Überdruck erzeugt werden. Dazu dienen die nachfolgend näher beschriebenen Elemente:To reduce the bearing weight of the winding rollers 6 on the support rollers 2, 3, an excess pressure can be generated with compressed air in the space delimited by the support rollers 2, 3 and the winding rollers 6. The elements described in more detail below serve this purpose:

Im unteren Zwickel zwischen den beiden Tragwalzen 2, 3 befindet sich bei allen in der Zeichnung dargestellten Ausführungsformen ein Luftkasten 15 mit einer Druckluftzufuhr, der sich zumindest über den Bereich der minimalen Breite der Bahn 4 erstreckt und an seiner oberen, den Wickelrollen 6 zugewandten Begrenzungsfläche Austrittsöffnungen für die Druckluft aufweist. Der Luftkasten 15 ist an seiner Unterseite an Hub- oder Schwenkelementen befestigt, damit er abgesenkt werden kann. Sofern unterhalb der Tragwalzen 2, 3 ein durch den Tragwalzenspalt hochfahrbares Trennmesser 14 angeordnet ist, sind am Luftkasten 15 Schwenkarme 16 befestigt, die ein Abschwenken bis unterhalb einer Tragwalze (Tragwalze 3 in Fig. 4 und 8) ermöglichen, um Freiraum für das Hochfahren des Trennmessers 14 zu schaffen. Ohne ein derartiges Trennmesser wird der Luftkasten 15 mittels Hubelementen (Hubzylinder 17) abgesenkt (Fig. 1, 6). Die den Tragwalzen 2, 3 zugewandten Seitenflächen des oberen Teils des Luftkastens 15 sind den Flächen der Tragwalzen 2, 3 angepaßt gekrümmt, wobei in Dichtposition nur ein geringer Spalt zur Vermeidung von Reibung frei bleibt. Die Seitenflächen weisen an ihren den Tragwalzen 2, 3 zugewandten Seiten mehrere parallel zu den Tragwalzenachsen verlaufende Nuten auf, die quer zur Strömungsrichtung von ausströmender Druckluft verlaufend als Labyrinthdichtung wirken. Die Höhe der dichtend wirkenden Seitenflächen ist der erforderlichen Dichtleistung angepaßt. Sie kann an der Seite der Tragwalze 2, die sich in den oberen Zwickel hineinbewegt, geringer als an der anderen Seite sein, da bedingt durch die Drehrichtung mit der Tragwalze 2 oder der darauf befindlichen Bahn 4 dem Ausströmen entgegenwirkende Luft mitgeschleppt wird.In the lower gusset between the two support rollers 2, 3 there is an air box 15 with a compressed air supply in all of 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 attached on its underside to lifting or pivoting elements 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 allow 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. Without such a cutting knife, 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. 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 extending 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.

Bei den Ausführungsformen nach den Fig. 1 bis 3 dient die Oberseite des Luftkastens 15 gleichzeitig als Führungsfläche für zwei darauf an beiden Seiten der Maschine axial verschiebbar befestigte stirnseitige Dichtelemente 18. Damit die Dichtelemente 18 in axialer Richtung bis aus dem Bereich der Tragwalzen 2, 3 hinausgefahren werden können, ragt der Luftkasten 15 an beiden Maschinenseiten bis über die Tragwalzen 2, 3 hinaus, wie in den Fig. 2 und 3 dargestellt ist. Die Form der stirnseitigen Dichtelemente 18 ist der freien Querschnittsfläche zwischen den Tragwalzen 2, 3 angepaßt, wobei der obere Teil rechteckförmig bis oberhalb der Verbindungslinie zwischen den beiden Scheitelpunkten der Tragwalzen 2, 3 verlängert ist, um bei Wickelrollen 6 mit großem Durchmesser eine ausreichende Dichtfläche zu sichern. Der verlängerte Teil ist an der den Stirnseiten der Wickelrollen 6 zugewandten Seite mit Nuten versehen, die auf vorhin beschriebene Weise als Labyrinthdichtung Druckluftverluste ausreichend mindern. An den den Tragwalzen 2, 3 zugewandten gekrümmten Seiten sind ebenfalls Nuten vorhanden. Sie verlaufen ebenfalls quer zur möglichen Ausströmrichtung, also in etwa entsprechend des Umfangs der jeweils benachbarten Tragwalze 2, 3. Die Dichtelemente 18 bewegen sich seitlich neben den Führungen 7, so daß sie gegen die Stirnseiten der Wickelrollen 6 bewegt werden können, wobei in Dichtposition ein geringer Spalt verbleibt, damit keine Reibung auftritt.In the embodiments according to FIGS. 1 to 3, the upper side 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. Thus, 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 elongated in a rectangular shape up to above the connecting line between the two vertices of the support rollers 2, 3, to ensure a sufficient sealing surface for winding rollers 6 with a large diameter. 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, that is to say approximately in accordance with the circumference of the respective 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.

Zur Verschiebung in Achsrichtung der Tragwalzen 2, 3 sind jeweils an der äußeren Seite jedes Dichtelementes 18 nicht dargestellte Verschiebeelemente (z. B. eine antreibbare Spindel) befestigt. Bei der Ausführungsform nach Fig. 2 können die Dichtelemente 18 so weit nach außen bewegt werden, daß die Schlitten 9 mit den Führungsköpfen 10 bis in den Zwickel zwischen den beiden Tragwalzen 2, 3 abgesenkt werden können, um in dort liegende leere Hülsen 11 einzufahren.For displacement in the axial direction of the support rollers 2, 3, displacement elements (not shown) (for example a drivable spindle) are fastened to the outer side of each sealing element 18. In the embodiment according to FIG. 2, the sealing elements 18 can be moved outwards so far that the carriages 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.

Bei der Ausführungsform nach Fig. 3 kann der Luftkasten 15 mit den Dichtelementen 18 so weit abgesenkt werden, daß sich die Oberkanten der Dichtelemente 18 unterhalb der engsten Stelle zwischen den beiden Tragwalzen 2, 3 befinden. Der Luftkasten 15 braucht sich somit nur in geringerem Maße über die Enden der Tragwalzen 2, 3 hinaus zu erstrecken. Die axiale Bewegung der Dichtelemente 18 an die äußersten Enden des Luftkastens 15 ermöglichen dann nur ein anschließendes Absenken - entweder durch ein Abschwenken oder ein lineares Absenken (Fig. 1) -, das den für den Schlitten 9 erforderlichen Freiraum schafft.3, 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.

Die Fig. 4 bis 10 zeigen bevorzugte Ausführungsformen der Erfindung, bei denen die stirnseitigen Dichtelemente 18 durch Schwenken in oder gegen die Bahnlaufrichtung - also über die Tragwalzen 2 bzw. 3 hinweg - aus dem unteren Arbeitsbereich der Führungsköpfe 10 bewegt werden. In diesem Fall ist es nicht erforderlich, daß sich der Luftkasten 15 seitlich bis über die Tragwalzen 2, 3 hinaus erstreckt, seine Länge entspricht daher in etwa der Länge der Tragwalzen 2, 3. Um ein Schwenken nach oben zu ermöglichen, enden die Dichtelemente 18 an der engsten Stelle zwischen den Tragwalzen 2, 3. Entsprechend reicht der Luftkasten von unten bis an diese Stelle. Die Dichtelemente 18 sind an beiden Maschinenseiten mit Schwenkarmen 19, 20 verbunden, deren Schenkachsen 21, 22 entweder mit der jeweiligen Tragwalzenachse zusammenfallen, oder etwas exzentrisch nach außen auf der Verbindungslinie zwischen den beiden Tragwalzenachsen verlaufen. Die geringe Exzentrizität führt dazu, daß die den Tragwalzen 2 bzw. 3 zugewandten Seitenflächen der Dichtelemente 18 sich beim Ausschwenken etwas von der jeweiligen Tragwalzenoberfläche wegbewegen, um z. B. Papierreste entfernen zu können. Falls es erforderlich ist, die Dichtelemente 18 noch weiter von den Tragwalzen weg zu bewegen, werden sie an Doppelhebeln befestigt. Auch bei den Ausführungsformen nach den Fig. 4 bis 7 sind die den Tragwalzen 2, 3 und den Stirnseiten der Wickelrollen 6 zugewandten Seiten der Dichtelemente 18 und des Luftkastens 15 mit den vorstehend beschriebenen Labyrinthdichtungen versehen.4 to 10 show preferred embodiments of the invention, in which the end sealing elements 18 are moved out of the lower working area of the guide heads 10 by pivoting in or against the web running direction - that is to say over the support rollers 2 or 3. In this case, it is not necessary for the air box 15 to extend laterally beyond the support rollers 2, 3, and its length therefore corresponds approximately to the length of the support rollers 2, 3. The sealing elements 18 end to enable pivoting upwards at the narrowest point between the support rollers 2, 3. Accordingly, the air box extends from below to this point. 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.

Bei der Ausführungsform nach den Fig. 4 und 5 tragen die um die auslaufseitige Tragwalze 3 schwenkbaren Hebel 19 an jeder Maschinenseite ein einteiliges Dichtelement 18. Dazu sind die Hebel 19 an ihren Enden abgewinkelt, so daß diese in eingeschwenkter Position zwischen den Tragwalzen 2, 3 in etwa waagerecht verlaufen. An den abgewinkelten Enden der beiden Schwenkarme 19 sind jeweils zwei Rundführungen 23 axial verschiebbar gelagert, an deren inneren Enden die Dichtelemente 18 befestigt sind. In der Ausführungsform nach den Fig. 6 und 7 ist jedes stirnseitige Dichtelement 18 entlang der Senkrechten durch die Mitte des Tragwalzenspaltes unterteilt. Jedes der Teile 24, 25 ist an einem Schwenkarm 19, 20 befestigt, der über die benachbarte Tragwalze 2, 3 geschwenkt werden kann. Die Schwenkbewegung benötigt somit - wie in Fig. 6 gezeigt - weniger Raum, so daß das Dichtelement 18 bereits zu einem früheren Zeitpunkt eingesetzt werden kann.In the embodiment according to FIGS. 4 and 5, the levers 19 pivotable about the outlet-side support roller 3 carry a one-piece sealing element 18 on each machine side. For this purpose, the levers 19 are angled at their ends, so that they are in the pivoted-in position between the support rollers 2, 3 run approximately horizontally. At the angled ends of the two swivel arms 19, two round guides 23 are axially displaceably mounted, on the inner ends of which the sealing elements 18 are fastened. In the embodiment according to FIGS. 6 and 7, each end sealing element 18 is subdivided along the vertical through the center of the support roller 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.

Auch bei der Ausführungsform nach den Fig. 8 bis 10 sind die Dichtelemente 18 an um die auslaufseitige Tragwalze 3 schwenkbaren Hebeln 19 axial - also quer zur Bahn 4 - verschiebbar gelagert. Sie können so durch Schwenken über die Tragwalze 3 aus dem unteren Arbeitsbereich der Führungsköpfe 10 bewegt werden (in Fig. 8 strichpunktiert gezeichnet). Die Schwenkhebel 19 sind an ihren freien Enden abgewinkelt, so daß diese in eingeschwenkter Position zwischen den Tragwalzen 2, 3 in etwa waagerecht verlaufen. Ihre Schwenkachse 25 verläuft etwas exzentrisch nach außen versetzt auf der Verbindungslinie zwischen den beiden Tragwalzenachsen. Die geringe Exzentrizität führt dazu, daß die den Tragwalzen 2 bzw. 3 zugewandten Seitenflächen der Dichtelemente 18 sich beim Ausschwenken etwas von der jeweiligen Tragwalzenoberfläche wegbewegen, um z. B. Papierreste entfernen zu können. An den abgewinkelten Enden der beiden Schwenkhebel 19 sind jeweils zwei Rundführungen 23 axial verschiebbar gelagert, an deren inneren Enden die Dichtelemente 18 befestigt sind. Zur axialen Verschiebung der Dichtelemente 18 und um sie gegen die Stirnseiten der äußeren Wickelrollen 6 andrücken zu können, ist der Kolben 26 einer pneumatischen Kolben-Zylinder-Einheit auf der Oberseite der Schwenkhebel 19 befestigt. Das Ende der Kolbenstange 27 ist an dem Dichtelement 18 um beide Achsen senkrecht zu den Führungen 23 beweglich gelagert. Dazu ist auf der Oberseite der Dichtelemente 18 jeweils eine Achse 28 befestigt, die durch das Auge der Kolbenstange 27 geführt ist. Die pneumatische Kolben-Zylinder-Einheit 26, 27 ist zur axialen Verschiebung der Dichtelemente 18 und zur Einstellung eines regelbaren Anpreßdrucks mit einer nicht dargstellten Regeleinrichtung verbunden.Also in the embodiment according to FIGS. 8 to 10, 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. To be able to remove paper residue. At the angled ends of the two pivot levers 19, two round guides 23 are axially slidably mounted, on the inner ends of which the sealing elements 18 are fastened. For the axial displacement of the Sealing elements 18 and in order to be able to press them against the end faces of the outer winding rollers 6, the piston 26 of a pneumatic piston-cylinder unit is fastened on the upper side of the swivel levers 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. For this purpose, 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 connected to a control device (not shown) for the axial displacement of the sealing elements 18 and for setting a controllable contact pressure.

Im vorliegenden Ausführungsbeispiel dient die Kolben-Zylinder-Einheit 26, 27 sowohl zur axialen Verschiebung der Dichtelemente 18 zur Anpassung auf verschiedene Bahnbreiten, als auch zum Andrücken gegen die Wickelrollen 6. Ebenso ist es möglich, diese beiden Aufgaben von getrennten Antrieben wahrnehmen zu lassen. Dann ist an den Schwenkhebeln 19 ein elektrischer oder hydraulischer Antrieb zur axialen Verschiebung befestigt, der über die pneumatische Kolben-Zylinder-Einheiten 26, 27 mit den Dichtelementen 18 verbunden ist.In the present exemplary embodiment, 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.

Bei einer nicht dargestellten Ausführungsform der Erfindung sind die die Dichtelemente 18 tragenden Schwenkarme abgewinkelt, wobei sich die Scheitelpunkte der Winkel außerhalb des Bereichs der Tragwalzen 2, 3 befinden. An den Scheitelpunkten der Winkel sind die Enden von sich über die gesamte Länge der Tragwalzen 2, 3 erstrekkenden Führungen befestigt, auf denen die Dichtelemente 18 verschiebbar gelagert sind. Die Führungen werden somit nicht mehr in axialer Richtung zur Einstellung auf verschiedene Bahnbreiten verschoben.In an embodiment of the invention, not shown, 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 apexes of the angles, 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.

Nachdem neue Hülsen 11 von oben in das Tragwalzenbett eingelegt wurden, werden die Führungsköpfe 10 eingefahren. Nach Befestigung des Anfangs der Bahn 4 an den Hülsen und Auflegen der Druckrolle 24 beginnt das Aufwickeln.After new sleeves 11 have been inserted into the carrier roller bed from above, the guide heads 10 are retracted. After attaching the beginning of the web 4 to the sleeves and placing the pressure roller 24, the winding begins.

Solange das Auflagegewicht der Wickelrollen 6 für die gewünschte Wickelhärte nicht ausreicht, wird zusätzlich mit der Druckrolle 26 in Richtung zu den Tragwalzen 2, 3 gedrückt. Sobald das Auflagegewicht zu groß wird, wird in dem von den Tragwalzen 2, 3 und den Wickelrollen 6 begrenzten Raum ein Überdruck durch Einleiten von Druckluft erzeugt, der das Auflagegewicht verringert. Zu diesem Zeitpunkt haben die Wickelrollen 6 bereits einen ausreichend großen Durchmesser (ca. 800 mm), so daß sich ihre Hülsen 11 und damit der Schlitten 9 mit ausreichend großem Abstand oberhalb der Tragwalzen 2, 3 befinden, um eine Kollision mit den Dichtelementen 18 zu vermeiden. Zum Abdichten des von den Wickelrollen 6 und den Tragwalzen 2, 3 begrenzten Raumes wird zunächst der Luftkasten 15 in den unteren Zwickel zwischen den Tragwalzen 2, 3 hochbewegt, so daß sich die Seitenflächen des Luftkastens 15 bis auf einen engen Spalt an die Tragwalzen 2, 3 anlegen und so nach unten abdichten. Anschließend werden die stirnseitigen Dichtelemente 18 nach oben und soweit nach innen bewegt, bis nur noch ein enger Spalt zu den Stirnseiten der Wickelrollen 6 frei bleibt und somit auch diese Seiten abgedichtet werden. Über den Luftkasten 15 wird nun Druckluft eingeleitet, bis sich unter den Wickelrollen 6 ein so hoher Druck aufgebaut hat, der das Auflagegewicht der Wickelrollen 6 auf das gewünschte Maß vermindert.As long as the bearing weight of the winding rollers 6 is not sufficient for the desired winding hardness, the pressure roller 26 is additionally pressed in the direction of the support rollers 2, 3. As soon as the support weight becomes too large, 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. At this time, the 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 to prevent a collision with the sealing elements 18 avoid. To seal the space delimited by the winding rollers 6 and the support rollers 2, 3, 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.

Bei der Ausführungsform nach den Fig. 8 bis 10 wird zunächst über den hochgeschwenkten Luftkasten 15 Druckluft eingeleitet, und anschließend werden die Dichtelemente 18 mittels der Kolben-Zylinder-Einheit 26, 27 axial gegen die Stirnseiten der Wickelrollen 6 bewegt. Der Druck in den Kolben 26 ist dabei so gesteuert, daß sich bei dem aufbauenden Überdruck ein Kräftegleichgewicht derart einstellt, daß ein geringer Spalt zwischen den Dichtelementen 18 und den Wickelrollen 6 verbleibt. So wird eine Reibung bei minimalen Druckluftverlusten vermieden. Falls sich die Spaltbreite z. B. aufgrund einer axialen Verschiebung der Wickelrollen 6 vergrößert oder verkleinert, fällt oder steigt der Überdruck unter den Wickelrollen 6 aufgrund der vergrößerten oder verkleinerten Druckluftverluste. Die daraus resultierende Druckdifferenz zum Druck in der pneumatischen Kolben-Zylinder-Einheit 26, 27 führt selbsttätig zu einer Korrektur der Spaltbreite bis das Kräftegleichgewicht wieder hergestellt ist.In the embodiment according to FIGS. 8 to 10, 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.

Alternativ kann ein geringer Spalt zwischen den Dichtelementen 18 und den Wickelrollen 6 auch so eingehalten werden, daß ein kleiner Abstand zu der Position der Führungsköpfe 10 automatisch eingestellt wird.Alternatively, 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.

Bevorzugt wird das Auflagegewicht der Wickelrollen 6 während des Aufwickelns konstant gehalten. Mittels einer Regel- oder Steuereinrichtung wird dazu ab dem gewünschten Auflagegewicht der Überdruck unter den Wickelrollen 6 so gesteigert, daß der Gewichtszuwachs permanent kompensiert wird. Die Regelung oder Steuerung der Wickelhärte vereinfacht sich so erheblich, da eine der entscheidenden Einflußgrößen, nämlich die Linienlast an den beiden Kontaktlinien zwischen den Wickelrollen 6 und den Tragwalzen 2, 3 sich nicht mehr verändert.The support weight of the winding rolls 6 is preferably kept constant during the winding. For this purpose, by means of a regulating or control device, 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.

Alternativ kann die Verminderung des Auflagegewichts durch Aufbau eines entsprechenden Überdrucks auch schrittweise erfolgen, um das Auflagegewicht in einem bestimmten Bereich zu halten. Ebenso kann der Zuwachs des Auflagengewichts nur teilweise kompensiert werden oder die Entlastung nach einer vorgegebenen Funktion erfolgen. Unter Umständen reicht eine einmalige Verminderung um einen konstanten Wert aus. Der Aufbau eines Überdrucks bietet in jedem Fall einen weiteren Parameter zur Steuerung der Wickelhärte der Wickelrollen 6.Alternatively, 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 number of copies can also be increased weight are only partially compensated for or the relief is carried out according to a specified 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.

Bei der Ausführungsform nach den Fig. 8 bis 10 wird der Druck in den pneumatischen Kolben-Zylinder-Einheiten 26, 27 von der Regeleinrichtung entsprechend dem wachsenden Überdruck ebenfalls gesteigert, damit der Abstand zwischen den Dichtelementen 18 und den Wickelrollen 6 konstant bleibt.In the embodiment according to FIGS. 8 to 10, 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.

Anstelle der Labyrinthdichtungen an den Dichtflächen sowohl im oberen Zwickel als auch im unteren Zwickel zwischen den Tragwalzen 2, 3 ist es möglich, durch geeignet gewählte Austrittsöffnungen für Druckluft mit Sperrluft abzudichten. Ebenso kann die Dichtwirkung der Labyrinthdichtungen durch Zufuhr von Sperrluft in deren Nuten verstärkt werden. Bei sehr eng nebeneinander angeordneten Tragwalzen 2, 3 kann es ausreichend sein, von unten mittels einer Schlitzdüse Druckluft durch die engste Stelle einzublasen. Die von unten eingeblasene Druckluft wirkt dann gleichzeitig als Sperrluft, um Verluste durch den engen Spalt zwischen den Tragwalzen 2, 3 zu vermindern.Instead of the labyrinth seals on the sealing surfaces both in the upper gusset and in the lower gusset between the support rollers 2, 3, it is possible to seal with sealing air through suitably selected outlet openings for compressed air. Likewise, the sealing effect of the labyrinth seals can be increased by supplying sealing air in their grooves. In the case of support rollers 2, 3 arranged very close to one another, it may be sufficient to blow compressed air through the narrowest point from below by means of a slot nozzle. The compressed air blown in from below then acts simultaneously as sealing air in order to reduce losses due to the narrow gap between the support rollers 2, 3.

Ebenso ist es möglich, Dichtelemente wie Bürsten, Gummilippen, Filzauflagen etc. einzusetzen, sofern die Reibung an den Tragwalzen 2, 3 und den Wickelrollen 6 ausreichend klein gehalten werden kann; entweder dadurch, daß die Dichtelemente reibungsarm an den Wickelrollen 6 und den Tragwalzen 2, 3 anliegen oder in einem so geringen Abstand von diesen positioniert sind, daß die Druckluftverluste akzeptabel gering sind. Bei der Abdichtung ist es dabei wichtig, daß die Dichtelemente die Drehbewegungen der beiden Tragwalzen 2, 3 unabhängig voneinander nicht beeinträchtigen, insbesondere keine reibschlüssige Verbindung zwischen den beiden Tragwalzen 2, 3 hergestellt wird. Andernfalls ließen sich unterschiedliche Drehmomente der Tragwalzen 2, 3, die zur Beeinflussung der Wickelqualität erforderlich sind, nicht mehr in dem erforderlichen Maß regeln.It is also possible to use sealing elements such as brushes, rubber lips, felt pads, etc., provided that 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. When sealing, it is important that the sealing elements do not affect 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.

Claims (13)

1. Carrier roll winding machine for winding a material web (4), in particular a paper or board web,
a) having two carrier rolls (2, 3) on which a wound roll (6) rests during winding,
b) and having means (15, 18) for sealing off the space delimited by the carrier rolls (2, 3) and the wound roll (6) and producing an overpressure therein, containing
b1) end sealing elements (18),
b11) which are arranged in the region of the lateral ends of the carrier rolls, seal off at least the cross-sectional area of the upper pocket between the two carrier rolls (2, 3), and
b12) which are axially displaceable to adapt to different web widths,
b2) and an air box (15),
b21) which is arranged in the region of the lower pocket between the carrier rolls (2, 3),
b22) extends over the working width of the machine,
b23) has a compressed-air feed and, on its upper delimiting surface facing the wound roll (6), has exit openings for the compressed air, and
b24) seals off the carrier roll gap from below with respect to the carrier rolls (2, 3), using sealing elements which do not produce a frictional connection between the carrier rolls (2, 3),
characterized in that
c) in the web running direction, upstream of the carrier rolls (2, 3), there is arranged a longitudinal cutting device (5) for dividing the material web (4) into individual webs which are subsequently wound onto cores (11
d) on each end of the carrier rolls (2, 3) there is in each case arranged a vertically movable guide head (10) which can be lowered downwards as far as into the region of the upper pocket between the carrier rolls (2, 3), the guide heads (10) being able to be driven into the two outer cores (11) to hold the wound rolls (6),
b13) the end sealing elements (18) can be moved simultaneously into a region outside the movement region of the guide heads (10) and their fastening (9), and
b25) the air box (15) can be moved away from the carrier rolls (2, 3).
2. Carrier roll winding machine according to Claim 1, characterized in that the air box (15) is supported such that it can be lowered downwards.
3. Carrier roll winding machine according to Claim 2, characterized in that the air box (15) can be pivoted as far as into the region below one carrier roll (3).
4. Carrier roll winding machine according to one of Claims 1 to 3, characterized in that the air box (15) extends as far as over the ends of the carrier rolls (2, 3) and the end sealing elements (18) are fastened to its upper side such that they can be displaced in the axial direction.
5. Carrier roll winding machine according to one of Claims 1 to 3, characterized in that the end sealing elements (18) are supported such that they can pivot over one of the carrier rolls (2, 3).
6. Carrier roll winding machine according to Claim 5, characterized in that the end sealing elements (18) are divided, each part (24 or 25) being able to pivot over one of the carrier rolls (2 or 3).
7. Carrier roll winding machine according to Claim 5 or 6, characterized in that the end sealing elements (18) are supported on round guides (23) extending parallel to the carrier roll axis, the round guides (23) being fastened on lateral pivot arms (19 and 20) whose pivot axis (21) extends along a carrier roll axis or somewhat eccentrically in the direction of the connecting line between the two carrier roll axes, offset outwards.
8. Carrier roll winding machine according to Claim 7, characterized by pivot arms bent over outside the region of the carrier rolls (2, 3), round guides which extend over the entire working width being fastened in each case to the vertices of the angles.
9. Carrier roll winding machine according to one of Claims 1 to 8, characterized in that the sealing off is carried out by means of sealing elements, such as brushes, rubber lips, felt overlays, which are fastened on the sealing surfaces of the sealing elements (15, 18) and which rest with low friction on the wound rolls (6) and the carrier rolls (2, 3) or are positioned at a small distance from these.
10. Carrier roll winding machine according to one of Claims 1 to 9, characterized in that the axially displaceable lateral sealing elements (18) can be pressed against the ends of the outer wound rolls (6) by means of a controllable pneumatic piston-cylinder unit (26, 27).
11. Carrier roll winding machine according to Claim 10, characterized in that the pneumatic piston-cylinder unit (26, 27) simultaneously serves for the axial displacement of the sealing elements (18) to adapt to different web widths.
12. Carrier roll winding machine according to Claim 10, characterized by an additional electric or hydraulic drive for the axial displacement of the sealing elements (18).
13. Carrier roll winding machine according to one of Claims 10 to 12, characterized in that the lateral sealing elements (18) are supported on a straight guide (23) which is parallel to the carrier roll axis and the pneumatic piston-cylinder unit (26, 27) is fastened to the sealing element (18) so as to be movable about the axes at right angles to the guide (23).
EP91914763A 1990-08-23 1991-08-16 King roll reeling machine Expired - Lifetime EP0496863B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4026597 1990-08-23
DE19904026597 DE4026597A1 (en) 1990-08-23 1990-08-23 Web winder for paper large dia. rolls - has seals round winding roll and carrier rollers to build=up overpressure to support increasing wound wt.
DE4110047 1991-03-27
DE4110047A DE4110047A1 (en) 1990-08-23 1991-03-27 CARRIER ROLLING MACHINE
PCT/EP1991/001555 WO1992003366A1 (en) 1990-08-23 1991-08-16 King roll reeling machine

Publications (3)

Publication Number Publication Date
EP0496863A1 EP0496863A1 (en) 1992-08-05
EP0496863B1 true EP0496863B1 (en) 1995-11-22
EP0496863B2 EP0496863B2 (en) 1999-01-07

Family

ID=25896127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91914763A Expired - Lifetime EP0496863B2 (en) 1990-08-23 1991-08-16 King roll reeling machine

Country Status (9)

Country Link
EP (1) EP0496863B2 (en)
JP (1) JP2974773B2 (en)
AT (1) ATE130580T1 (en)
BR (1) BR9105875A (en)
CA (1) CA2069898C (en)
DE (3) DE4110047A1 (en)
ES (1) ES2083587T5 (en)
FI (1) FI108858B (en)
WO (1) WO1992003366A1 (en)

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DE9212571U1 (en) * 1992-06-15 1992-11-12 Jagenberg AG, 4000 Düsseldorf Carrier roller winding machine
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FI92995C (en) * 1993-06-30 1995-02-10 Valmet Paper Machinery Inc Drum winder
FI93095C (en) * 1993-06-30 1995-02-27 Valmet Paper Machinery Inc Procedure for rolling roll carrier of a track and carrier rolling wheelchair
DE9317616U1 (en) * 1993-11-19 1995-03-16 Beloit Technologies, Inc., Wilmington, Del. Winding machine
EP0665178B2 (en) * 1994-01-31 2001-08-29 Voith Sulzer Papiertechnik Patent GmbH Winding machine for winding a running paper web
DE9414449U1 (en) * 1994-09-06 1996-01-11 Beloit Technologies, Inc., Wilmington, Del. Winding machine
DE19513143C2 (en) * 1995-04-07 1998-02-19 Voith Sulzer Papiermasch Gmbh Winding machine for winding a running web, in particular a paper web, into a roll
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US5839689A (en) * 1995-10-19 1998-11-24 Voith Sulzer Papiermaschinen Gmbh Air box for web carrier rolls and having a connecting wall
DE19538973A1 (en) * 1995-10-19 1997-04-24 Voith Sulzer Papiermasch Gmbh Carrier roll winding machine
DE19538972A1 (en) * 1995-10-19 1997-04-24 Voith Sulzer Papiermasch Gmbh Blow box connecting wall
FI97793C (en) * 1995-11-24 1997-02-25 Valmet Corp Method and apparatus for rolling a web of material
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DE19624716A1 (en) * 1996-06-21 1996-11-21 Voith Sulzer Papiermasch Gmbh Winding machine for coiling moving paper web
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FI981210A (en) * 1998-05-29 1999-11-30 Valmet Corp Method and apparatus for supporting a roll
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DE19837760A1 (en) * 1998-08-20 2000-03-02 Voith Sulzer Papiertech Patent Apparatus for winding web material into a roll with two carrier rollers as a winding bed has a sealing partition assembly which can be set at the roll circumference at the end wall of a pressure chamber to reduce air consumption
DE102010064331A1 (en) * 2010-12-29 2012-07-05 Voith Patent Gmbh A method for winding a paper or board web and Doppeltragwalzenwickelvorrichtung for winding a paper or board web
CN117524600B (en) * 2024-01-08 2024-04-05 榆缆线缆集团股份有限公司 Full-automatic stranded wire device and method for composite cable production

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Also Published As

Publication number Publication date
EP0496863B2 (en) 1999-01-07
JPH05501699A (en) 1993-04-02
CA2069898C (en) 2004-04-06
CA2069898A1 (en) 1992-02-24
ES2083587T3 (en) 1996-04-16
FI921789A (en) 1992-04-22
DE59106948D1 (en) 1996-01-04
DE9116308U1 (en) 1992-08-06
BR9105875A (en) 1992-11-03
JP2974773B2 (en) 1999-11-10
ATE130580T1 (en) 1995-12-15
DE4110047A1 (en) 1992-10-01
WO1992003366A1 (en) 1992-03-05
FI921789A0 (en) 1992-04-22
FI108858B (en) 2002-04-15
ES2083587T5 (en) 1999-06-16
EP0496863A1 (en) 1992-08-05

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