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
  • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
  • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
  • B65H19/1857—Support arrangement of web rolls
  • B65H19/1868—The roll support being of the turret type
• • 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
  • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
  • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
  • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
  • B65H19/181—Flying splicing, i.e. the expiring web moving during splicing contact taking place on the replacement roll
  • B65H19/1821—Flying splicing, i.e. the expiring web moving during splicing contact taking place on the replacement roll the replacement web being accelerated or running prior to splicing contact
• • 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
  • B65H2301/46—Splicing
  • B65H2301/464—Splicing effecting splice
  • B65H2301/4641—Splicing effecting splice by pivoting element

Definitions

• the invention relates to devices for pressing a material web according to the preamble of claim 1 or 2.
• Such devices are used in particular, but by no means exclusively, in processing stations which are used to prepare paper rolls for a flying roll change on a web-fed rotary printing press.
• adhesive labels are attached to the beginning of the web of paper, with which the beginning of the web is attached to the circumference of the supply roll. So that the adhesive labels adhere reliably to the circumferential surface, pressure elements are used to press the paper web against the circumference of the supply roll and to smooth it out. In other words, this means that with these devices the start of the web is pressed against the outer circumference of the own supply roll.
• pressing devices are also used in gluing stations of reel changers in order to press the beginning of the web of a new printing material web onto a running printing material web during the flying reel change.
• Such a device with a pressing member is known from DE 19540 689 C2.
• the pressing member is designed in the manner of a bristle roller which is rotatably mounted in a swivel frame.
• the swivel frame has two swivel levers, each of which is pretensioned with tension springs, in order in this way to pretension the bristle roller and thus to press the bristles against the circumference of the paper roll with a specific pretensioning force.
• DE 199 23 930 A1 describes a device for winding a material web, wherein the material web is pressed onto the supply roll by means of a brush strip.
• US 3 309 035 discloses an adhesive roller with a plurality of bale sections, each of which has an elastic covering.
• the invention has for its object to provide devices for pressing a web of material.
• the advantages which can be achieved with the invention consist, in particular, in that a brush strip is used as a pressing member instead of a brush roller.
• a brush strip is used as a pressing member instead of a brush roller.
• the material web e.g. B. substrate, in particular paper web against the outer circumference of the supply roll, for. B. paper web
• the bristles of the brush strip remain, so that no relative movement between the pressing member and the substrate web occurs.
• the design effort for storing the brush strip can be significantly reduced.
• no roller bearings are required to support the brush strip.
• the Brush strip is attached to a carrier, in particular on a swivel frame. By adjusting the carrier, the brush strip can then simply be placed on the printing material web from the rest position or disengaged by pivoting back.
• the brush strip is rigid on the carrier attached, so that the pressure between the brush strip and the substrate results from the turning moment with which the carrier was placed on the substrate.
• An improved embodiment compared to this rigid mounting of the brush strip results if the brush strip is adjustably mounted on the carrier. This can be done, for example, in that the brush strip is pivotally mounted on the swivel frame.
• the pressing force can then also be changed even after the brush strip has been turned on, without having to change the turning moment of the carrier.
• the brush strip is detachably attached to the carrier. This makes it easy to replace the brush strip.
• a bristle-free contact surface is provided on the brush strip, against which the printing material web can be guided in contact.
• the brush strip on the carrier is adjusted until the bristles of the brush strip no longer lie against the printing material web and instead the printing material web is only guided by the bristle-free contact surface.
• the contact pressure can be completely removed without the holder of the brush strip having to be put into the rest position.
• the bristles of the brush strip should preferably be made of a material with a low coefficient of friction, for example in the manner of china bristles, or have a non-stick coating. This makes it possible for the web tension of the engaging substrate web to be increased only very slightly, despite the lack of relative movement between the brush strip and the substrate web.
• the brush strip is elastically deformable along its longitudinal axis or has at least two sections along its longitudinal axis which are adjustable independently of one another.
• This embodiment makes it possible for the brush strip in the active zone to be able to adapt specifically to local unevenness. If necessary, this additional adjustment path, which corresponds to the deformability of the brush strip or the bearing play of the brush strip sections in the storage, can save any other adjustable mounting of the brush strip.
• the brush strip can be designed in the manner of an elastically deformable plastic strip, on which the deformable bristles are preferably embedded or molded.
• a guide strip can be used in which the brush strip or brush strip sections is held movably.
• At least one spring accumulator can be provided between the guide bar and the brush bar, with which the brush bar is resiliently pretensioned on the guide bar.
• the spring accumulator should extend in sections or continuously over the entire Extend the length of the effective zone so that the preload force applied by the spring accumulator can also be specifically adapted to the different requirements in the different areas of the effective zone.
• the spring accumulator can be designed in the manner of a hose which can be acted upon with a pressure medium, in particular with compressed air.
• coil springs can also be used as spring accumulators, each of which prestresses a specific section of the guide bar with a specific prestressing force.
• an adjusting device can be provided on the pressing member, with which the pretensioning of the brush strip can be adjusted.
• the adjusting device can be designed, for example, in the manner of set screws, each of which is assigned to a helical spring, the respective pretensioning of the helical spring being set in accordance with the available spring travel by screwing in or unscrewing the set screws.
• Paper roll preparation stations with which the glue points at the beginning of the web of a supply roll, e.g. B. paper roll are prepared and / or in gluing stations in a roll changer, which serves the flying roll change, for example on a web-fed rotary printing press.
• Figure 1 shows a first embodiment of a device with a pressing member in a first process phase in a schematic cross section.
• FIG. 2 shows the device with a pressure element according to FIG. 1 in a second process phase
• FIG. 3 shows the device with a pressure element according to FIG. 1 in a third process phase
• FIG. 4 shows a pressure element with a brush strip suitable for use in the device according to FIG. 1, viewed from the front;
• FIG. 5 shows the brush strip according to FIG. 4 in a side view
• FIG. 6 shows a further embodiment of a pressing member with a brush strip in longitudinal section
• FIG. 7 shows the pressure element according to FIG. 6 in cross section along the section line VII - VII;
• FIG. 8 shows a further embodiment of a pressing member with a brush strip in longitudinal section
• FIG. 9 shows the pressure element according to FIG. 8 in cross section along the section line IX - IX;
• FIG. 10 shows a further embodiment of a pressing member with a brush strip in longitudinal section
• FIG. 11 shows the pressure element according to FIG. 10 in cross section along the section line XI-XI;
• Fig. 12 shows a pressing member, which is placed against a material roll having unevenness;
• FIG. 13 is a schematic view of a reel changer with a brush strip
• Fig. 14 is a schematic representation of a swing frame.
• a device 01 with a pressing member 05 is shown in schematic section, which is part of an adhesive station in a reel changer, the, reel changer z. B. is arranged in a web-fed rotary printing press.
• This - gluing station serves to start the web of a new supply roll 02 when performing a flying roll change on a running material web 03, z. B. substrate 03, in particular paper web 03 to attach.
• suitable adhesive labels are attached to the new supply roll 02 and the new supply roll 02 is then accelerated to a rotational speed, so that the web speed on the outer circumference of the new supply roll 02 corresponds to the web speed of the printing substrate web 03 that is running.
• a carrier 04 for. B. a pivot frame 04, which consists of two pivotally mounted pivot arms 04, by means of a suitable drive device, for example a hydraulic cylinder or a pneumatic cylinder (not shown), pivoted into the position shown in FIG. 1.
• a suitable drive device for example a hydraulic cylinder or a pneumatic cylinder (not shown), pivoted into the position shown in FIG. 1.
• a brush strip 06 with bristles 07 and a cutting knife 08 extend between the two swivel arms 04.
• the brush strip 06 can be pivoted between the two Swivel arms 04 mounted and can be swiveled around a swivel axis.
• a pneumatic cylinder which is not shown in FIGS. 1 to 3, is provided for pivoting the brush strip 06.
• a contact surface 09 is provided on one side of the brush bar 06, which is bristle-free and along which the running printing material web 03 is guided at full web speed.
• the brush bar 06 can be pivoted counterclockwise by driving the drive cylinder to such an extent that the bristles 07 come to rest on the running printing material web 03 and finally, as shown in FIG. 3, the Press the running substrate 03 against the outer circumference of the new supply roll 02.
• the beginning of the web is connected to the running printing material web 03.
• the cutting knife 08 is pivoted clockwise downward, in order to thereby cut through the running printing material web 03 (shown in dashed lines).
• the contact pressure which is applied by the brush strip 06 can be varied by adjusting the pivoting angle of the brush strip 06.
• an adjustable end stop 11 is provided on the swivel frame 04, by means of which the maximum swivel angle of the brush strip 06 and thereby also the maximum contact pressure is limited.
• the pivoting movement is preferably less than 270 °.
• a second embodiment of a brush strip 12 is shown can be used in the device 01 instead of the brush strip 06.
• the brush bar 12 can perform a linear movement on the swivel frame 04.
• the brush strip 12 can be designed as a rigid component.
• the bristles 13, which are designed in the manner of china bristles 13, are fastened to the underside of a rigid carrier strip 14.
• the carrier bar 14 can be attached to a carrier provided for this purpose by means of suitable bearing receptacles.
• a pressing member 16 with a brush strip 17 and a guide strip 18 is shown in longitudinal section or cross section.
• a plurality of elastically deformable bristles 19 are attached running parallel to one another. The free ends of the bristles 19 can come to rest on the new supply roll 02 for smoothing a printing material web 03 and in this way form a straight-line active zone.
• the brush bar 17 has a bearing play relative to the guide bar 18, by which the adjustment path 21 is formed.
• the brush bar 17 can be axially displaced relative to the guide bar 18 along this adjustment path 21.
• a plurality of coil springs 22 are provided, which serve as spring storage 22 and which pretension the brush strip 17 in the lowest position.
• the pretensioning force in the different zones can be changed by adjusting adjusting screws 23 serving as adjusting devices 23.
• the brush strip 17 is elastically deformable along its longitudinal axis, which is achieved, for example, by the bristles 19 being embedded in an elastically deformable carrier strip 14, in particular a plastic strip 14. Due to the elastic deformability of the brush strip 17, the bristles 19 can assume different positions relative to the guide strip 18 along the effective zone. The brush strip 17 is immersed at different depths in the guide strip 18 along the travel path 21, so that unevenness in the active zone can be specifically compensated for. 8 and 9, a further embodiment of a pressing member 24 is shown in longitudinal and cross section.
• the basic structure of the pressure element 24 with brush strip 17 and guide strip 18 corresponds to the structure of the pressure element 16.
• the spring element 26 for pretensioning the brush strip 17 in the pressure element 24 is a hose 26 which can be pressurized with compressed air and which is connected via a feed channel 27 to a suitable pressure source, in particular with pressure control, can be connected.
• a further embodiment of a pressing member 28 is shown in longitudinal and cross section.
• the pressing member 28 differs from the pressing members 16 and 24 in that the brush strip 29 of several, for. B. rigid brush strip sections 30 is formed.
• Each brush strip section 30 can deflect independently of the other brush strip sections 30 along the adjustment path 21, so that, in turn, unevenness occurring specifically along the effective zone can be compensated for.
• the brush strip sections 30 can also be elastically deformed, e.g. B. be formed by means of a plastic carrier strip.
• the brush strip sections 30 are preferably arranged at a small distance in the longitudinal direction (for example a29 less than 20 mm, preferably less than 10 mm, particularly preferably less than 5 mm), so that the bristles 19 essentially form an uninterrupted surface.
• the brush strip 29 In an engaged state, in which the material roll 03 has unevenness, the brush strip 29 is elastically deformed or the individual brush strip sections 30 are set differently (FIG. 12).
• the brush strip 29 or the brush strip sections 30 have different, in the longitudinal direction of the pressing member 16; 24; 28 to a longitudinal axis, in particular axis of rotation 31 of the supply roll 02, a differing distance a1, a2, a3, a4, a5 in the radial direction of the supply roll 02.
• the distance a1, a2, a3, a4, a5 of the pressing member 16, 24, 28 is that Axis of rotation 31 of different sizes at at least three points spaced in the longitudinal direction of the pressing member 16, 24, 28.
• the average distance a3 is greater than the two outer distances a2 and a4.
• Elastically deformable carrier strip 14, brush strip 17; 29 or brush strip section 30 means a reversible deformability in the radial direction of the material roll 03 of preferably more than 3 mm, in particular more than 5 mm, particularly preferably more than 8 mm.
• the entire brush strip 17; 29 and / or at least the carrier strip 14 has an elastic modulus of less than 100,000 N / mm 2 , in particular less than 50,000 N / mm 2 , particularly preferably less than 10,000 N / mm 2 .
• brush strip is preferably to be understood as an element consisting of bristles and carrier strip, the longitudinal extent of which is substantially greater than its thickness and / or perpendicular to its longitudinal extent only partially has bristles on the circumference. In particular, all bristles are aligned essentially radially to the axis of rotation of the material roll.
• the pressing member 05 in particular the brush strip 17 on the z. B. designed as a pivot arm 04 support 04 by means of a further lever arm 32, z. B. can be pivoted by means of another actuator, for example designed as a working cylinder.
• the brush strip preferably linearly movable.
• the brush strip 17 executes paths of different lengths in the radial direction of the supply roll 02 in the position spaced apart in the axial direction. This can compensate for unevenness in the supply roll 02. LIST OF REFERENCE NUMBERS

Landscapes

• Replacement Of Web Rolls (AREA)
• Treatment Of Fiber Materials (AREA)
• Chutes (AREA)
• Warping, Beaming, Or Leasing (AREA)
• Seats For Vehicles (AREA)

Applications Claiming Priority (3)

Publications (2)

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• 2005
  • 2005-03-14 AT AT05717028T patent/ATE389608T1/de not_active IP Right Cessation
  • 2005-03-14 EP EP05717028A patent/EP1737772B1/fr not_active Not-in-force
  • 2005-03-14 DE DE502005003333T patent/DE502005003333D1/de not_active Expired - Fee Related
  • 2005-03-14 WO PCT/EP2005/051146 patent/WO2005097644A1/fr active IP Right Grant

Non-Patent Citations (1)

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