WO2004110910A1 - Dispositif comportant une pluralite de buses mobiles espacees destinees a distribuer un adhesif et a separer une bande de papier dans une machine a papier - Google Patents

Dispositif comportant une pluralite de buses mobiles espacees destinees a distribuer un adhesif et a separer une bande de papier dans une machine a papier Download PDF

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Publication number
WO2004110910A1
WO2004110910A1 PCT/SE2004/000877 SE2004000877W WO2004110910A1 WO 2004110910 A1 WO2004110910 A1 WO 2004110910A1 SE 2004000877 W SE2004000877 W SE 2004000877W WO 2004110910 A1 WO2004110910 A1 WO 2004110910A1
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WO
WIPO (PCT)
Prior art keywords
nozzles
web
fluid
machine direction
reel shaft
Prior art date
Application number
PCT/SE2004/000877
Other languages
English (en)
Other versions
WO2004110910A9 (fr
Inventor
Claes Magnus Berglund
Sven Sören ERIKSSON
Original Assignee
Metso Paper Karlstad Ab
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
Application filed by Metso Paper Karlstad Ab filed Critical Metso Paper Karlstad Ab
Publication of WO2004110910A1 publication Critical patent/WO2004110910A1/fr
Publication of WO2004110910A9 publication Critical patent/WO2004110910A9/fr

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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
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • B65H19/2253—The web roll being driven by a winding mechanism of the nip or tangential drive type and the roll being displaced during the winding operation
    • B65H19/2261—Pope-roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/002—Precutting and tensioning or breaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/29—Securing the trailing end of the wound web to the web roll
    • 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
    • B65H2301/4144—Finishing winding process
    • B65H2301/41441—Finishing winding process and blocking outer layers against falling apart
    • B65H2301/41442—Specified by the sealing medium sealing used
    • B65H2301/414421—Glue or hot-melt
    • 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
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/418—Changing web roll
    • B65H2301/4181—Core or mandrel supply
    • B65H2301/41816—Core or mandrel supply by core magazine within winding machine, i.e. horizontal or inclined ramp holding cores
    • 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
    • B65H2408/236—Pope-winders with first winding on an arc of circle and secondary winding along rails

Definitions

  • the present invention is related to winding devices used to wind a continuously advancing paper web onto a reel shaft to form a completed roll, and more particularly relates to web cutting devices used to separate the web from the completed roll and adhesive dispensing devices to facilitate attachment of the web to a new reel shaft.
  • Threading entails pulling a web end along through a paper or board machine by a leader.
  • the leader consists of a strip of a web which may initially be only 40 cm to 50 cm wide, but gradually becomes wider until it extends across the entire width of the web.
  • the leader is cut out in the continuous web, starting either at one edge or somewhere at an optional distance from either edge of the web, whereas its length is determined by the time it takes for the tip to extend across the entire width of the web. Due to the high web speed the leader may be very long, such as up to 180 to 200 meters. This incurs considerable costs for the paper mill because the cut part of the paper web must be discarded for each paper reel.
  • high speed paper web production machines may also use full-width reel changing methods.
  • Changing "full-width" reels in the present context refers to wrapping the entire width of the web around the reel shaft when initiating a new reeling operation. This is to be distinguished from threading using a tapered leader.
  • glue is applied to the full- width leader itself before it is threaded.
  • full-width methods assisted by balloon blowing are common. Balloon blowing entails creating slack across the full width of the web by somewhat retarding the rotation of the finished reel.
  • the fold thus formed is then forced into the nip between the new reel shaft and the reel drum, after which the web is cut off.
  • glue or tape is also applied, but only on the actual reel shaft before it comes into contact with the paper web.
  • the present invention addresses the above needs and achieves other advantages by providing an apparatus for winding an advancing web onto a reel shaft and separating the continuous web from the reel once completed.
  • the apparatus includes a plurality of nozzles supported in a spaced arrangement in the cross-machine direction.
  • the nozzles are connected to adhesive or fluid supplies and are moved generally in the cross-machine direction while dispensing the adhesive or fluid. Coupling of the machine direction advancement of the paper web with the cross-machine direction movement of the nozzles results in a saw toothed severing or adhesive pattern on the web.
  • the nozzles may be moved simultaneously by attachment to a single member movable by an actuator. Drip guards maybe positioned at the beginning and end of the path of each of the nozzles so as to intercept drips of water or adhesive before they reach the paper web.
  • the present invention includes an apparatus for winding an advancing web onto a reel shaft and separating the continuous web from the reel once completed so as to facilitate winding of the web on a new reel shaft.
  • the reel shaft is supported on a support which is part of the winding apparatus.
  • a winding surface is positioned near enough to the support to be able to press the advancing web against the reel shaft and to cause the web to be wound on the reel shaft.
  • the apparatus further includes a plurality of nozzles configured to dispense a fluid, such as water or adhesive. Supporting the nozzles in a spaced relationship along a cross-machine direction is a nozzle support assembly.
  • the assembly supports the nozzles sufficiently close to the web or the reel shaft so that the nozzle can dispense fluid on the web or reel shaft, or both.
  • An actuator is connected to the nozzle support assembly and is capable of moving the nozzle support assembly in a cross-machine direction a distance equal to at least the distance between the two adjacent nozzles farthest apart. In this manner, the saw toothed pattern has a cross-machine directional component that extends the entire width of the paper web.
  • the nozzles are supported by the nozzle support assembly a fixed distance from each other.
  • the nozzle support assembly may include a rigid member extending in the cross-machine direction wherein the nozzles are fixed to and spaced along the rigid member.
  • the actuator includes a pneumatic cylinder connected to the support on one end and the rigid member on the other end allowing the cylinder to move the assembly in the cross-machine direction.
  • the apparatus includes an additional plurality of second nozzles that are also configured to dispense a severing fluid, such as water. Supporting the second nozzles is a second nozzle support assembly.
  • the second nozzles are supported in a spaced relationship along the cross-machine direction and sufficiently close to the web to be able to dispense water onto the web and sever the web.
  • the spacing of the second nozzles corresponds to the spacing of the first nozzles in the cross-machine direction and the second nozzles are also connected to the actuator. Actuation of the first and second nozzle support assemblies in the same cross-machine direction creates a saw toothed sever line and adhesive pattern on the web.
  • the apparatus can comprise a plurality of third nozzles that are configured to dispense fluid and that are supported by a third nozzle support assembly. Similar to the second nozzles, the third nozzles are supported sufficiently close to the web to be able to dispense the fluid, such as water, onto the web.
  • the nozzles may be arranged in alternative configurations and still generate a saw toothed adhesive or sever line pattern.
  • the nozzles may be progressively spaced in the machine direction, forming a diagonal line above the advancing web.
  • the nozzles may be positioned on alternating sides of a common machine direction position.
  • the nozzles are arranged in a pyramid shape above the advancing web.
  • each of the nozzles may have a drip guard positioned at the beginning and end of its path of travel.
  • the drip guards are between the nozzles and the web to inhibit dripping of the fluid or adhesive on the web.
  • a sole saw toothed adhesive line may be applied to the web or reel shaft and the web attached to the reel shaft.
  • the downstream portion of the web is separated from the upstream portion of the web by the exertion of tension along the adhesive line.
  • a thick, sticky hot melt adhesive is used to facilitate severing of the web and firm attachment of the web to the new reel shaft.
  • the present invention has several advantages.
  • the relatively short distance that the nozzles must be actuated reduces the amount of time required for web severing and adhesive application. More particularly, quicker severing avoids the waste and poor quality winding resulting from long leaders.
  • the saw toothed shape of the sever line and adhesive pattern assures that a component of the sever line or adhesive pattern extends across the entire width of the web. Entire width coverage facilitates easy detachment of the web leader and full width attachment of the leader to the new reel shaft.
  • Figure 1 is a side elevation view of a saw toothed glue-spreading and web severing device of one embodiment of the present invention in a reel-up of a papermaking machine;
  • Figure 2 is an enlarged perspective view of racks supporting glue and water nozzles of the glue-spreading and web severing device of Figure 1 ;
  • Figure 3 is another perspective view of the racks and nozzles of Figure 2;
  • Figure 4 is a plan view of a paper web having a saw toothed glue and severing pattern of another embodiment of the present invention.
  • Figure 5 is a schematic of the paper web of Figure 4 having a leading end attached to a reel shaft and a trailing end detached from the leading end along the saw toothed glue and severing pattern;
  • Figure 6 is a plan view of a paper web having a saw toothed glue severing pattern of another embodiment of the present invention.
  • Figure 7 is a schematic of a plurality of independently actuated adhesive nozzles suspended above strategically located drip guards of another embodiment of the present invention.
  • Figure 8 is a plan view of the schematic of Figure 7 showing a path of travel of each of the nozzles;
  • Figure 9 is plan view of the schematic of Figure 7 showing a resting position of each of the nozzles above a respective drip guard with adhesive dispensing turned off;
  • Figure 10 is a ian view of the schematic of Figure 7 showing a starting position of each of the nozzles with adhesive dispensing turned on;
  • Figure 11 is a plan view of the schematic of Figure 7 showing an ending position of each of the nozzles with adhesive dispensing about to be turned off
  • Figure 12 is a plan view of the schematic of Figure 7 showing a second resting position of each of the nozzles with adhesive dispensing turned off;
  • Figure 13 is a schematic of a saw toothed glue-spreading and web severing device of yet another embodiment of the present invention with its nozzles arranged on alternating sides of a common machine direction position;
  • Figure 14 is a schematic of a saw toothed glue-spreading and web severing device of still another embodiment of the present invention with its nozzles arranged in a pyramid shape;
  • Figure 15 is a schematic side elevation view of a rotatable drip shield of another embodiment of the present invention rotated away from the glue and water nozzles;
  • Figure 16 is a schematic side elevation view of the rotatable drip shield of Figure 15 rotated into a position below the glue and water nozzles.
  • FIG. 1 shows schematically an embodiment of a glue-spreading and. web severing device 10 arranged upstream of a web supporting device, such as a reel drum 11 in a reel-up 12 of a papermaking machine.
  • the reel drum 11 supports a continuous paper web 13 during winding.
  • a pair of primary arms 30 of the reel-up 12 grip an empty reel shaft 31 and hold the empty reel shaft onto the surface of the reel drum 11 to form a nip into which the paper web 13 extends as it is wound onto the reel shaft.
  • the glue spreading and severing device 10 which will be described in more detail below, is mounted on a stand, or support 22, of the reel-up 12. Also mounted on the support 22 are a pair of lowering arms 23, the reel drum 11 and the pair of primary arms 30.
  • the support 22 includes a pair of rails 24 for supporting a completed paper roll 25 with opposite ends of its reel shaft 26 resting on the rails.
  • Support 22 also includes a pair of rails 27 for supporting opposite ends of a plurality of empty reel shafts 28.
  • the pair of rails 27 are sloped toward the upstream end of the reel-up 12 so as to urge the empty reel shafts 28 in the upstream direction. Additional detail on the support 22, and other aspects of the reel-up 12, can be found in U.S. Patent Application No.
  • each of the reel shafts is either a metal shaft with a rubber or polyurethane cover on which the paper is directly wound, a metal shaft having a paper core tube sleeved over it, or a paper or polymer tube with no ' metal shaft.
  • the lowering arms 23 comprise hook-shaped plate structures 29 that are connected to fluid pressure actuators, such as hydraulic or pneumatic actuators, of a hydraulic system (not shown).
  • the hook-shaped structures are pivotally mounted to the support 22 adjacent empty reel shafts 28 supported by the supporting rails 27.
  • the empty reel shafts 28 are retrieved from the supporting rails 27 by the lowering arms 23.
  • the lowering arms rotate upwards until the hook shaped plate structures 29 engage the nearest empty reel shaft 28 that has been urged toward the upstream end of the rails 27.
  • the lowering arms 23 lower the empty reel shaft by rotating downwards.
  • the pair of primary arms 30 grippingly receive the lowered reel shaft 31 with a drive device (not shown) to rotate the shaft to a peripheral speed matching that of the reel drum 11.
  • the empty reel shaft 31 is then engaged with the reel drum 11.
  • the reel drum 11 is rotatably journalled to a pair of support members 32 fixed relative to, and disposed adjacent to, the rails 24. Over the surface of the reel drum 11 runs the continuous web 13 coming from a production stage of a papermaking machine.
  • the reel drum 11 can be directly driven by a drive motor (not shown) operably coupled to the reel drum.
  • the reel drum can have either a sohd or a flexible surface.
  • the use of the reel drum 11 in the illustrated embodiment is not meant to be limiting as support for the web 13 could be provided by other types of supporting devices.
  • the reel drum 11 could be replaced by a moving belt on which the web 13 can be supported and fed onto the reel shaft 31.
  • a foil may be used as a web supporting device.
  • the foil has a downstream edge that forms a nip with the reel shaft 31 through which the paper web is guided onto the paper roll.
  • the foil does not form a nip with the paper roll, in which case there can be a very short free draw between the downstream edge of the foil and the paper roll.
  • the pair of primary arms 30 support the reel shaft 31 through at least an initial part of the winding process.
  • the primary arms 30 comprise a reel shaft gripper 33 operable to hold reel shaft 31 against the reel drum 11 to form a nip 34.
  • the reel shaft gripper 33 is driven by an actuator (not shown) comprising a pneumatic or hydraulic cylinder. The actuator adjusts the radial position of the reel shaft gripper 33 to allow for increasing diameter of the reel shaft 31 during wind-up.
  • the pair of primary arms 30 also comprise a pivot unit (not shown) journalled in the support 22 allowing primary arms 30 to cooperate with the reel shaft 31.
  • the primary arms 30 are rotated about the axis of the pivot unit by an actuator (not shown) comprising a pneumatic or hydraulic piston cylinder. Rotation of the primary arms about the pivot unit allows the reel shaft 31 to be moved along the surface of the reel drum 11 during wind up so that the building reel can be delivered into a secondary unit (not shown) which then takes over the winding process.
  • the primary arms 30 and secondary units are common in the art of papermaking machines, and therefore are only described in limited detail herein.
  • the secondary unit completes the winding onto reel shaft 31 to form a completed paper roll 25 after which the completed paper roll is transferred along the pair of rails 24 to a further station.
  • the spreading and severing device 10 includes a series of glue applicator nozzles 14 mounted on a first rack 15, a series of water nozzles 16 mounted on a second rack 17 and another series of stationary water nozzles 18 mounted on a third rack 19 wherein each of the racks extend in a cross-machine direction, as shown in Figures 2 and 3.
  • Attached to the first and second racks 15, 17 is an actuator 20 configured to move the glue and water nozzles 14, 16 in the cross-machine direction.
  • Each of the racks 15, 17, 19 includes a support sleeve 35 and a pair of support clamps 36.
  • the support sleeve 35 has a cylindrical shape with an inner, cylindrical opening extending between its ends.
  • the sleeve 35 also defines a slot 37 extending along its length in the cross-machine direction and at the bottom of the sleeve.
  • the clamps 36 are spaced apart in the cross-machine direction and embrace respective ends of the sleeve 35.
  • Each of the clamps 36 has a disk shape that defines a center opening sized to receive the sleeve 35 and also defines a lower slot that is coincident with the slot 37 of the sleeve.
  • Each clamp also includes a top end shaped for connection to a portion of the support 22, such as a mounting bar 38 extending in the cross-machine direction above the paper web 13, as shown in Figure 1.
  • the mounting bar 38 shown in Figure 1 is adapted to provide spraying directly onto the web 13, although it could be repositioned to provide spraying onto the reel shaft 31 directly (while rotating in the lowering arms or when fully lowered) or into the nip formed between the reel shaft and the reel drum 11. Spraying onto the reel shaft 31 avoids the problem of adhesive and dirt buildup on the reel drum as a new reel shaft is used with each cycle. The spraying could also occur when a reel shaft is supported on the rails 24.
  • each sleeve 35 Extending through the opening in each sleeve 35 is a fluid supply pipe or tube 39 having a pair of ends 40 each with an opening defined therein. Surrounding each open end is a clamp 41 which secures a fluid supply conduit (not shown) onto the open end.
  • the fluid supply conduit supplies adhesive, water or other fluid as desired or as compatible with the type of nozzles 14, 16 and 18.
  • individual conduits may be used for the water nozzles or the glue (which may be required, for example, to ensure heated glue is maintained at the proper temperature).
  • the individual nozzles and conduits may themselves be heated to maintain the temperature of the glue, which avoids clogs.
  • nozzles 14, 16 and 18 Supported along the length of the fluid supply tube 39 is a respective one of the pluralities of nozzles 14, 16 and 18.
  • the nozzles are spaced along the tube 39 and extend downwards therefrom through the slot 37 in the sleeve 35.
  • Each of the nozzles is in fluid communication with the inside of the fluid supply tube 39, which, in turn, establishes the nozzle's communication with the fluid supply conduit secured thereto.
  • Each tube is exchangeable with other tubes to promote easy maintenance of the nozzles supported thereby.
  • Nozzles fixed to a movable rack without the sleeve may also be used and such an assembly does not require clearance on the side of the reel-up 12 for tube exchange.
  • the nozzles may have a spacing of between 10 to 50 mm in the cross-machine direction.
  • the actuator 20 includes a pair of actuator plates 42 each defining a pair of spaced circular openings passing therethrough.
  • the actuator plates are spaced apart in the cross- machine direction, one of each having its circular openings sleeved over adjacent ends 40 of the supply tubes corresponding to the glue and water nozzles 14, 16.
  • One of the plates includes a mount 43 to which the actuator 20 is pivotably attached.
  • the other end of the actuator 20 is pivotably fixed to the support 22.
  • Various types of actuators may be used to motivate the nozzles including a servomotor having a pulse transducer and a tooth-belt transmission, a pneumatic cylinder or cylinders or a linear bearing driven by a screw and a servomotor.
  • the actuator may be a dual-action actuator positioned on a single side of the machine, or include two single-action actuators, one on each side of the reel-up 12. Generally, the dual-action actuator will be preferable due to space reasons.
  • Web severing and glue spreading device 10 is positioned in this embodiment on the upstream side of the nip 34 to spray glue and water on web 13 just before it enters the nip 34.
  • Nozzles 14, 16 and 18 are supported by their respective racks 15, 17 and 19 so as to point in a downward direction towards the web 13.
  • the glue nozzle 14 is furthest upstream and the water nozzles 16 and 18 are further downstream, respectively.
  • sequential timing of the firing of the nozzles allows the nozzles to be positioned anywhere along the web or at the nip and still create the desired severing and glue pattern.
  • the first and second racks 15, 17 are actuated in the cross-machine direction while jets from the respective glue, water, and stationary water nozzles 14, 16, 18 are fired onto the paper web 13, which results in a saw toothed sever line 100 and adhesive pattern 101 on the web, as shown in Figure 4.
  • a delay is incurred before firing of the stationary water nozzles 18 to complete the portion of the sever line 100 extending in the machine direction.
  • the jets emitted from the glue nozzles 14 can be dispersed in a narrow diameter or in a large diameter, such as in a flat fan, or fishtail-like, spray as desired.
  • larger diameter glue jets are desired to facilitate easy attachment to the new reel shaft 31.
  • the timing of glue jet firing and the spacing of the glue nozzles 14 from the other nozzles may have to be adjusted for adhesive lines 101 that are wide in the machine direction to prevent overlap.
  • use of wide glue jets, such as the fishtail-like spray mentioned above reduces the amount of actuation of the glue nozzles 14 in the cross-machine direction necessary to achieve to achieve full-width glue application.
  • the web 13 is advanced through nip 34 where the applied glue line 101 on the top side of web 13 encounters the outer surface of reel shaft 31.
  • the glue sticks to the outer surface of reel shaft and the web 13 becomes secured to the reel shaft.
  • glue application to the web may occur prior to its contact with the reel shaft so as to sever the web and then bind the web to the reel shaft. Glue- only severing is preferred for paper webs with relatively low cross-machine tensile strength (such as tissue papers) which are generally more easily severed.
  • Additional advancement of the web 13 begins to introduce tension into the web and an upstream portion 13A of the web that is upstream from the adhesive line 101 continues to wind along the reel shaft 31 and a downstream portion 13B of the web that is downstream from the adhesive line folds backwards.
  • the tension in the downstream portion of the web 13 increases.
  • the web 13 then completes severing along the sever line 100. Once severed, the downstream portion becomes the tail end that winds onto the previously completed paper roll.
  • the tension application step is not necessary.
  • the adhesive could also be sprayed upon the reel shaft 31 which wets the paper web 13 as it is wound thereon, effecting attachment and promoting severing using tension.
  • the sole use of adhesive in severing is preferable for paper web types having a low cross-machine direction tensile strength, i.e., relatively weak paper webs. Such properties can be found, for instance, in a through-air-dried (TAD) bathroom tissue with a basis weight of 20 grams per square meter and having a cross-machine tensile strength of 2 Nm/g (newton meter / gram).
  • TAD through-air-dried
  • the cross-machine tensile strength can also be expressed as 40 N/m (newton / meter), the product of 20 g X 2 Nm g. Water severing is more preferred for heavier web types, such as towels, newsprint or paperboard. It is also possible to control spraying of the nozzles 14, 16 and 18 so that the saw toothed sever line 100 and adhesive pattern 101 are varied. For instance, the amount of cross-machine direction actuation of the nozzles or the speed of the web maybe adjusted to generate sawtoothed patterns of varying dimensions. In another alternative, certain nozzles maybe selectively fired to generate only portions of the sawtoothed sever and adhesive lines 100, 101.
  • the water nozzles 16, 18 are not fired and the web 13 is severed along the adhesive line 101, as shown in Figure 6. Singular application of the saw toothed adhesive pattern is particularly advantageous when employed with soft tissue type paper webs as the glue itself may sever the web.
  • the glue used for severing can be provided with some unique characteristics that distinguish it from other types of glues or adhesives.
  • the glue at room temperature can be sohd or semi-solid (e.g., gel-like), but when heated its viscosity becomes much lower so that it can be sprayed from the glue nozzles 14. These characteristics are advantageous for several reasons.
  • the nozzles are less likely to clog or suffer from build up and contamination because heating of any residual glue in the system renders the glue flowable. The invention thus reduces down time for maintenance. Once the glue application is completed and the heating of the glue discontinued, the glue returns to its sohd or semi-solid state, and hence is less likely to drip or run compared with conventional liquid adhesives. This minimizes dripping of glue onto the web which could result in sequential turns of web in a completed roll being stuck to each other, leading to a waste of paper.
  • the fluid supply tube 39 connected at one end to the glue nozzles 14 is preferably connected at its other end to an adhesive heating hopper (not shown).
  • the adhesive heating hopper advantageously can comprise a Dynatec heated adhesive application system available from ITW Dynatec of Hendersonville, Tennessee.
  • the adhesive heating hopper includes a heated hopper grid for heating the adhesive to make the adhesive flowable.
  • a driving device is connected to, or incorporated in, the hopper for pressurizing the adhesive supply.
  • the driving device can be an internal piston pump in the hopper for pumping the flowable adhesive, or can be a source of pressurized air coupled with the hopper.
  • the adhesive is activated by heating the adhesive (e.g., Swift Adhesives
  • glue or water dispensing nozzles 50 are positioned over (or adjacent to) the advancing paper web before or at the nip 34, above the reel drum 11.
  • Other actuators could also be used, such as a chain drive connected to an electrical motor controlled by a programmable logic controller.
  • the actuators are capable of moving the nozzles from start to stop position in about 2 seconds or less to minimize the "broke” or wasted paper at high paper machine speeds.
  • movement from the start to stop positions should be about 0.2 to 1.5 seconds.
  • the speed of nozzle movement is generally less important during the reverse stroke as completion of the roll elapses (over about 15 or 30 minutes) before another gluing and severing cycle.
  • the return stroke may also be used for gluing and severing for the next turn up operation, requiring fast movement in both directions.
  • the nozzles 50 are spaced in both the cross-machine and machine directions. As described above, spacing in the cross-machine direction minimizes the necessary stroke of the nozzles for their spray patterns to overlap and have a total cross-machine component extending the full width of the web 13. Spacing of the nozzles 50 in the machine direction ensures that the individually actuated nozzles clear each other during cross-machine actuation. Also, spacing of the nozzles allows the use of a plurality of drip guards 52 that extend under the beginning and end of the paths of the nozzles 50. More particularly, the machine direction spacing avoids the pairs of drip guards 52 corresponding to each of the nozzles 50 from obstructing jet spray from other ones of the nozzles.
  • the drip guards may be interconnected in order to be easily removable when cleaning is necessary.
  • the nozzles 50 are progressively spaced in the machine direction to form a diagonal line.
  • the nozzles are shown more specifically as nozzles A through E wherein each nozzle has a starting point, and the nozzle is shown in solid lines, and an ending point wherein the nozzle is shown in broken lines.
  • the beginning and end of the actuation path of each of the nozzles overlaps in the cross-machine direction.
  • each of the nozzles A through E is positioned over its respective starting one of the drip guards 52 with its glue or water supply turned off.
  • the nozzles A through E are moved off of the drip plates to a starting position and the fluid supply to each nozzle is turned on.
  • each of the nozzles is then actuated in the cross-machine direction while dispensing fluid until reaching about the same cross-machine position as the starting point of the adjacent nozzle.
  • the fluid supply from the nozzle is shut off.
  • each nozzle is moved over its respective ending drip guard, as shown in Figure 12.
  • Figure 13 shows yet another embodiment, wherein the nozzles A through E are shown positioned on alternating sides of the same position in the machine direction. Similar to the embodiment immediately above, fluid is sprayed from each of the nozzles when they are not above their respective drip guard and the cross-machine distance of travel of the nozzles overlaps. This arrangement can be particularly advantageous when spraying glue on a core or a reel spool.
  • Figure 14 shows a further embodiment, wherein the nozzles A through E are arranged in a pyramid shape. As shown schematically in Figures 15 and 16, a rotatable drip shield 53 could be used as an alternative to the drip guards 52.
  • the drip shield includes an arcuate sheet member 54 extending in the cross-machine direction and defining an opening slot also extending in the cross-machine direction.
  • the arcuate sheet member is attached to a rotatable rod 55 that is actuated to swing the arcuate sheet member between open and closed positions.
  • the nozzles 14, 16 and 18 are free to spray onto the web 13 and/or the reel shaft 31.
  • the arcuate sheet member 54 captures drips and other leakage from the nozzles.
  • the arcuate sheet member 54 may be fixed and the nozzles maybe rotatable into position above the arcuate sheet member.
  • the present invention has several advantages.
  • the relatively short distance over which the nozzles 14, 16 and A through E must be actuated reduces the amount of time required for web 13 severing and adhesive application. More particularly, quicker severing avoids the waste and poor quality winding resulting from long leaders.
  • the saw toothed shape of the sever line 100 and adhesive pattern 101 assures that a component of the sever line or adhesive pattern extends across the entire width of the web. Entire width coverage facihtates easy detachment of the web leader and full width attachment of the leader to the new reel shaft 31.
  • spreading and severing device 10 may be tailored to different factors, such as different paper grades.
  • heavy paper grades may benefit from a device that employs only spaced water nozzles that are solely used for severing.
  • Lighter paper grades such as bathroom tissue, may be severed solely by the use of glue nozzles due to the weakness of the paper.
  • a pair of spaced glue nozzle racks similar to the racks holding nozzles 14 described above, could be employed for simultaneously severing and gluing leading and trailing ends of a light- grade paper web.
  • Heavier paper grades such as towel, newsprint and board, may be simultaneously severed and glued to form a leader end using a pair of racks, one with water nozzles and the other with glue nozzles.
  • a pair of glue nozzle racks could be employed with a water nozzle rack between them to simultaneously separate and glue a leader and trailer ends of the heavier paper grades.
  • the glue nozzles could be positioned to dispense glue onto the empty reel shafts 28 as they are retrieved from the rails 27 by the lowering arms 23, or as one of the shafts is lowered into the primary arms.
  • those embodiments having water nozzles dispense water onto the web, while adhesive can be dispensed onto the web or the reel shaft, or both.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

L'invention concerne un dispositif destiné à enrouler et à faire avancer une bande sur un arbre de bobine et à séparer la bande continue d'une bobine entièrement enroulée. Le dispositif selon l'invention comporte une pluralité de buses disposées de façon espacée dans le sens transversal de la machine. Les buses sont connectées à une alimentation d'adhésif ou de fluide et sont actionnées dans le sens transversal de la machine lorsqu'elles distribuent l'adhésif ou le fluide. Le couplage de l'avancement de la bande de papier dans le sens de la machine et du mouvement des buses dans le sens transversal de la machine permet d'obtenir une séparation ou un motif d'adhésif en dent de scie sur la bande. Les buses peuvent être actionnées individuellement en séquence ou simultanément, par exemple par fixation à un élément individuel pouvant être déplacé par un actionneur. Des pare-gouttes peuvent être disposés au début et à la fin de la trajectoire de chaque buse de manière à intercepter des gouttes d'eau ou d'adhésif avant que celles-ci ne tombent sur la bande de papier.
PCT/SE2004/000877 2003-06-13 2004-06-07 Dispositif comportant une pluralite de buses mobiles espacees destinees a distribuer un adhesif et a separer une bande de papier dans une machine a papier WO2004110910A1 (fr)

Applications Claiming Priority (2)

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US47831203P 2003-06-13 2003-06-13
US60/478,312 2003-06-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1741648A3 (fr) * 2005-07-08 2008-08-27 Metso Paper, Inc. Méthode d'enroulement à courroie et enrouleuse à courroie
WO2013113110A1 (fr) * 2012-01-30 2013-08-08 Paprima Industries Inc. Procédé et appareil de coupe à enroulement de bande
CN113213227A (zh) * 2021-05-12 2021-08-06 黄仁焕 一种强湿卷纸收卷端部调整及防卷纸分散装置
US11279582B2 (en) 2016-10-17 2022-03-22 Paprima Industries Inc. Process for turning up in a paper machine and paper manufacture

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Publication number Priority date Publication date Assignee Title
US5014924A (en) * 1989-08-21 1991-05-14 The Black Clawson Company Apparatus and method for roll changing on a continuous winder
WO1998046510A1 (fr) * 1997-04-16 1998-10-22 Valmet-Karlstad Ab Dispositif d'une enrouleuse de machine a papier
US6253818B1 (en) * 1998-01-13 2001-07-03 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Device for changing reels at paper machines
WO2002044064A1 (fr) * 2000-11-28 2002-06-06 Metso Paper Karlstad Ab Procede d'enroulement d'une bande de papier menager dans une enrouleuse d'une machine papier
WO2002064469A1 (fr) * 2001-02-09 2002-08-22 Metso Paper, Inc. Unite de buses destinee a la coupe au moyen d'un liquide
US6467719B1 (en) * 2000-04-13 2002-10-22 Peter A. Rodriguez Apparatus and method of turn-up of lightweight paper on high speed reels
WO2003037765A1 (fr) * 2001-10-30 2003-05-08 Valco Cincinnati, Inc. Dispositif et procede de transfert de bobine de tissu

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014924A (en) * 1989-08-21 1991-05-14 The Black Clawson Company Apparatus and method for roll changing on a continuous winder
WO1998046510A1 (fr) * 1997-04-16 1998-10-22 Valmet-Karlstad Ab Dispositif d'une enrouleuse de machine a papier
US6253818B1 (en) * 1998-01-13 2001-07-03 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Device for changing reels at paper machines
US6467719B1 (en) * 2000-04-13 2002-10-22 Peter A. Rodriguez Apparatus and method of turn-up of lightweight paper on high speed reels
WO2002044064A1 (fr) * 2000-11-28 2002-06-06 Metso Paper Karlstad Ab Procede d'enroulement d'une bande de papier menager dans une enrouleuse d'une machine papier
WO2002064469A1 (fr) * 2001-02-09 2002-08-22 Metso Paper, Inc. Unite de buses destinee a la coupe au moyen d'un liquide
WO2003037765A1 (fr) * 2001-10-30 2003-05-08 Valco Cincinnati, Inc. Dispositif et procede de transfert de bobine de tissu

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1741648A3 (fr) * 2005-07-08 2008-08-27 Metso Paper, Inc. Méthode d'enroulement à courroie et enrouleuse à courroie
WO2013113110A1 (fr) * 2012-01-30 2013-08-08 Paprima Industries Inc. Procédé et appareil de coupe à enroulement de bande
US8628641B2 (en) 2012-01-30 2014-01-14 Paprima Industries Inc. Web turn-up cutting apparatus and method
US9273430B2 (en) 2012-01-30 2016-03-01 Paprima Industries Inc. Web turn-up cutting apparatus and method
US11279582B2 (en) 2016-10-17 2022-03-22 Paprima Industries Inc. Process for turning up in a paper machine and paper manufacture
CN113213227A (zh) * 2021-05-12 2021-08-06 黄仁焕 一种强湿卷纸收卷端部调整及防卷纸分散装置
CN113213227B (zh) * 2021-05-12 2023-08-08 德州胜港纸业有限公司 一种强湿卷纸收卷端部调整及防卷纸分散装置

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