EP2002971A2 - Corrugated cardboard system and method for manufacturing corrugated cardboard - Google Patents

Corrugated cardboard system and method for manufacturing corrugated cardboard Download PDF

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Publication number
EP2002971A2
EP2002971A2 EP08010255A EP08010255A EP2002971A2 EP 2002971 A2 EP2002971 A2 EP 2002971A2 EP 08010255 A EP08010255 A EP 08010255A EP 08010255 A EP08010255 A EP 08010255A EP 2002971 A2 EP2002971 A2 EP 2002971A2
Authority
EP
European Patent Office
Prior art keywords
web
corrugated
color mark
corrugated cardboard
endless
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.)
Granted
Application number
EP08010255A
Other languages
German (de)
French (fr)
Other versions
EP2002971B1 (en
EP2002971A3 (en
Inventor
Helmut Kraus
Jürgen HAMMER
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.)
BHS Corrugated Maschinen und Anlagenbau GmbH
Original Assignee
BHS Corrugated Maschinen und Anlagenbau GmbH
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 BHS Corrugated Maschinen und Anlagenbau GmbH filed Critical BHS Corrugated Maschinen und Anlagenbau GmbH
Publication of EP2002971A2 publication Critical patent/EP2002971A2/en
Publication of EP2002971A3 publication Critical patent/EP2002971A3/en
Application granted granted Critical
Publication of EP2002971B1 publication Critical patent/EP2002971B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2822—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard involving additional operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2831—Control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1016—Transverse corrugating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1016—Transverse corrugating
    • Y10T156/102—Transverse corrugating with deformation or cutting of corrugated lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing

Definitions

  • the invention relates to a corrugated board plant and a method for producing corrugated board.
  • Known corrugated board plants have a plurality of splice devices for providing endless material webs, which each connect a plurality of finite material webs to form an endless material web.
  • the joining of the finite material webs to an endless web of material is referred to in the jargon as splices and corresponding devices as splice devices.
  • the endless webs of material have joining seams between the finite material webs, referred to as splices, due to the joining.
  • the connecting seams of the endless material webs are found in the produced corrugated web again and must be separated there for quality reasons by means of a cross-cutting device. For exact removal, the cross-cutter must detect where seams are located in the corrugated web.
  • the problem with this is that in the corrugated board storage devices are arranged, which serve for temporary storage of the corrugated web during manufacture and have the consequence that the web length of the cached corrugated web is not known exactly.
  • the invention has for its object to provide a corrugated board and a method for producing corrugated cardboard, which allow a simple and accurate cutting out of seams in the corrugated web.
  • the essence of the invention consists in that the at least one memory device is preceded by at least one marking device, by means of which at least one color mark can be attached to one of the webs of the corrugated web.
  • the at least one marking device is designed such that a solid-form dye can be applied as a color mark.
  • the attachment is carried out by rubbing off the solid dye.
  • the fact that the dye is in solid form and can be attached in this form, complex and maintenance-intensive spray apparatus, as is the case for example when the dye is in liquid form, are avoided.
  • the dye can be present, for example, as a signature chalk, pastel crayon or oil pastel.
  • the at least one color mark is applied by means of a dye which is present in solid form, moisture is not introduced into the material webs, in contrast to liquids, and thus disadvantageously softened.
  • the at least one color mark can be detected by means of the at least one detection device, so that the path length of the cached corrugated web can be determined in the at least one control device by means of the detected color mark.
  • the at least one cross-cutting device is dependent on the determined web length can be actuated such that the corrugated web is accurately cut and thus connecting seams are exactlycardswennbar. Provision of liquid and spraying this liquid by means of a sophisticated sprayer is thus no longer required.
  • a corrugated board plant 1 has a first splice device 3, a second splice device 4, a corrugation device 5 and a first production device 6 for producing a single-sided laminated corrugated web 2.
  • the first splicing device 3 comprises a first unrolling unit 9 for unrolling a finite first material web 7 from a first material reel 8 and a second unwinding unit 9 for unrolling a finite second material web 10 from a second material reel 11.
  • Unit 12 The finite first and second webs of material 7, 10 are joined to provide an endless first web of material 13 by means of an unillustrated joining and cutting unit of the first splicing device 3.
  • a first connecting seam 14 which runs transversely to the endless first material web 13, is produced in the endless material web 13.
  • a first connecting seam 14 is shown.
  • the second splicing device 4 is constructed in accordance with the first splicing device 3 and comprises for rolling a finite third material web 15 from a third material roll 16 a third unrolling unit 17 and for unrolling a finite fourth material web 18 of FIG a fourth roll of material 19; a fourth roll-off unit 20.
  • the finite third and fourth sheets of material 15, 18 are used to provide an endless second web of material 21 by means of a non-illustrated joining and cutting unit of the second splice means 4 interconnected.
  • a second seam 22 is formed in the endless second web of material 21, which extends transversely to the endless second web of material 21.
  • a second connecting seam 22 is shown between the second splicing device 4 and the corrugating device 5.
  • the endless webs of material 13, 21 are endless paper webs, the join seams 14, 22 being referred to in the jargon as a splice.
  • the endless second material web 21 is fed to the corrugator device 5.
  • the corrugator device 5 has a first corrugating roller 25 rotatably mounted about a first rotation axis 24 and a second corrugation rotatably mounted about a second rotation axis 26 Roll 27 on.
  • the corrugating rolls 25, 27 form a gap for the passage and corrugation of the endless second material web 21, wherein the rotation axes 24, 26 run parallel to each other.
  • a measuring device 28 for measuring the rotational speed of the second corrugating roll 27 is arranged on the second corrugating roll 27, a measuring device 28 for measuring the rotational speed of the second corrugating roll 27 is arranged.
  • the first production device 6 comprises a first glue application roller 29, a first glue metering roller 30, a first glue container 31 and a first pressing roller 32.
  • the first glue application roller 29 forms a gap with the second corrugating roller 27, wherein the first glue application roller 29 for applying glue 33 is arranged partially within the first glue container 31.
  • the first size metering roller 30 abuts against the first size coat roller 29 and serves to form a uniform size coat on the first size coat roller 29.
  • For pressing the size 33 provided corrugated line 23 against the endless first material web 13 forms the first pressing roller 32 with the second corrugating roller 27 a gap, through which the endless first material web 13 and the corrugated web 23 are guided simultaneously.
  • the single-faced laminated corrugated web 2 For temporarily storing and buffering the single-faced laminated corrugated web 2, it is fed to a storage device 34, wherein the single-faced corrugated web 2 in the storage device 34 has a transport direction 35.
  • the single-faced laminated corrugated web 2 is transported in the storage device 34 in the transport direction 35 from a storage device start 36 to a storage device end 37, wherein the single-faced corrugated web 2 in the storage device 34 loops 38 forms.
  • the cached, single-faced laminated corrugated web 2 has a web length L B between the memory device start 36 and the memory device end 37, which depends on the length of the memory device 34 and the number of loops 38.
  • the memory device 34 is designed like a table and is referred to in the jargon as a bridge.
  • the memory device 34 is preceded by a marking device 39 relative to the transport direction 35.
  • the marking device 39 is used to apply color marks 40 to the endless material webs 21.
  • the marking device 39 is arranged between the second splicing device 4 and the corrugating device 5, so that the color marks 40 on an underside of the endless second material web 21 to be corrugated can be attached. It makes sense, the color marks 40 are applied before bonding in the production device 6, z. B. also within the splicing device 4 or already on the material roll.
  • the marking device 39 is designed in such a way that a dye 41 in the form of a solid rod is used as the color mark 40 attachable.
  • the dye 41 consists, for example, of solid crayon, solid pastel crayon, solid oil crayon or similar solids suitable for forming color marks 40.
  • the marking device 39 is designed as a piston-cylinder unit which has a cylinder 42 designed as a tubular housing and a piston 42 displaceable in the cylinder 42 along a displacement direction 43.
  • the piston 44 is connected to a holder 45, which receives a present as a chalk block in solid form dye 41. In particular, the chalk block is glued to the holder 45.
  • the cylinder 42 has an end face a first cylinder opening 46 which is formed such that the dye 41 through the first cylinder opening 46 when moving the dye 41 by a plastic guide ring 87 is feasible.
  • a monitoring device 47 in the form of an inductive proximity switch, which serves to monitor the dye level, is arranged in the cylinder 42.
  • the cylinder 42 has a second cylinder opening 48.
  • the second cylinder opening 48 is sealed by a cylinder cover 49.
  • the piston 44 serves to support a plurality of ring-shaped return elements 52 which have return lips 53 and are mounted on the piston 44.
  • the piston 44 is constructed as follows:
  • the plate-shaped holder 45 is screwed to a retaining plate 88 via screws 89.
  • the holding plate 88 has centrally a bore 90 with an internal thread. Contrary to the direction 43 next to the support plate 88 alternately follow the annular return lips 53 and support discs 91 - in the present case, three pairs.
  • the block of discs 91 and return lips 53 is held together by a centrally located screw 92, which is screwed into the retaining plate 88 and holds the piston 44 together.
  • the cylinder 42, the piston 44 and the cover 49 essentially define a pressure chamber 54, which can be filled via a valve 93 in the cover 49 with a fluid, for example with compressed air.
  • the marking device 39 is arranged relative to the endless second material web 21 such that the displacement direction 43 is substantially perpendicular to a plane spanned by the endless second material web 21 in the region of the marking device 39.
  • a rest member 55 is disposed relative to the endless second web of material 21 opposite the marker 39.
  • the support member 55 is plate-shaped. Alternatively, the support member 55 may be formed as a rotatably mounted roller.
  • the marking device 39 is electrically-pneumatically actuated, wherein for displacing the piston 44, an electrically actuated compressed air pump is provided, which is provided for filling the pressure chamber 54 with compressed air.
  • the marking device 39 is arranged relative to the endless second material web 21 such that it can be marked in an edge region 56.
  • the memory device 34 is followed by a detection device 60 in the transport direction 35, the detection device 60 being arranged between the memory device 34 and a second production device 61.
  • a detection device 60 may be provided between the first production device 6 and the storage device 34.
  • the detection device 60 has an optical detector 62 which is arranged on a detector carrier 63.
  • the detector carrier 63 is attached to the memory device 34 and extends substantially transversely thereto.
  • On the detector carrier 63 a plurality of deflection rollers 64 are rotatably mounted for receiving and deflecting the one-sided laminated corrugated web 2.
  • the deflection rollers 64 are arranged on the detector carrier 63 in such a way that the corrugated board web 2 laminated on one side with the color marks 40 can be guided substantially horizontally past the detector 62.
  • the second production device 61 serves to connect the corrugated web 2 laminated on one side with an endless third material web 65 serving as a cover web to a corrugated web 66 laminated on both sides.
  • the second production device 61 has glue 33 applied to it on the corrugated web 23 of the single-faced laminated corrugated web 2, a second glue application roller 67, a second glue metering roller 68 and a second glue container 69 on.
  • a heatable Anpress table 70 and an endless pressure belt 71 is provided which form a Anpress-gap 72.
  • the pressure belt 71 is deflected by three belt deflection rollers 73 and driven.
  • a third splice device 74 is provided.
  • the third splicing device 74 is designed in accordance with the splicing devices 3, 4 and points to unrolling a fifth roll of material 75 from a fifth roll of material 76; a fifth roll-off unit 77; and for rolling a finite sixth sheet of material 78 from a sixth roll of material 79, a sixth roll-off unit 80.
  • the third splice device 74 also has a connecting and cutting unit, not shown, by means of which the finite material webs 75, 78 are connectable to the endless third material web 65.
  • a third seam 81 is created. Exemplary is in Fig. 1 after the third splice device 74, a third connecting seam 81 is shown.
  • the endless third material web 65 is also an endless paper web.
  • a cross-cutting device 82 For cutting the double-sided laminated corrugated web 66 a cross-cutting device 82 is provided.
  • the cross-cutting device 82 has two transverse cutting rollers 83, each having a blade bar 84 extending radially outwards and extending transversely to the double-sided laminated corrugated board web 66.
  • the cross-cutting rollers 83 form a cutting gap 85 for passing through the double-faced laminated corrugated web 66, wherein the cross-cutting rollers 83 are rotatably driven.
  • an electronic control device 86 is provided with the splice devices 3, 4, 74, with the measuring device 28, with the marking device 39, with the detection device 60 and with the cross cutter 82 is in signal communication.
  • the signal connections are in the Fig. 1 and 2 represented by dashed lines.
  • the control device 86 is provided by the splicing devices 3, 4, 74 with information such that the control device 86 knows when a connection of finite ones is known Material webs 7, 10, 15, 18, 75, 78 and an associated production of connecting seams 14, 22, 81 takes place.
  • control device 86 is designed such that, based on measured values of the measuring device 28 and control signals of the marking device 39 and the detection device 60 when marking and detecting color marks 40, the path length L B of the memory Device 34 cached, one-sided laminated corrugated web 2 can be determined. Depending on the determined web length L B , the cross-cutting device 82 can be controlled by means of the control device 86.
  • the cross-cutting device 82 may be arranged upstream or downstream of a longitudinal cutting / grooving device designed in a known manner. Furthermore, the cross-cutting device 82 may be followed by further cutting means for cutting corrugated sheets and stacking means for stacking the corrugated sheets.
  • the operation of the corrugated board plant 1 will be described below.
  • the first splice device 3 generates the endless first material web 13, which is fed to the first production device 6.
  • the production of the endless first material web 13 takes place, for example, in such a way that the finite first material web 7 of the ending first material roll 8 is joined to the second finite material web 10 of the second new material roll 11.
  • the first unrolling unit 9 is provided with a new first material roll 8 so that the finite material webs 7, 10 can be continuously joined to the first endless web of material 13.
  • the first splice device 3 sends a signal to the control device 86 so that it knows when a first connection seam 14 is generated.
  • the second splicing device 4 generates corresponding to the first splicing device 3 the endless web of material 15, 18, the endless second web of material 21. At each connection, the second splice device 4 sends a signal to the control device 86, so that this knows when a second joint 22 is generated.
  • the endless second material web 21 to be corrugated is fed to the marking device 39.
  • the pressure chamber 54 is acted upon by means of the electrically controlled by the control device 86 compressed air pump with compressed air. Due to the compressed air, the piston 44 is moved in the displacement direction 43, so that the solid-state dye 41 is extended through the first cylinder opening 46 from the cylinder 42.
  • the dye 41 is pressed against the endless second material web 21 during extension from the cylinder 42 and against the support member 55.
  • the endless second web of material 21 passed between the dye 41 and the support member 55 is marked by rubbing the dye 41 to form a color mark 40.
  • Fig. 6 shows a color mark 40. This can be generated in the middle or at the edge of the endless second material web 21.
  • the length of the color mark 40 is dependent on the speed of the endless second material web 21 and the duration of the pressing process.
  • the restoring lips 53 of the return elements 52 pull the piston 44 and the dye 41 automatically back into the cylinder 42 due to their inherent elasticity and friction against the cylinder inner wall, z. B. by 2 to 4 mm, when the pressure in the chamber 54 is reduced.
  • the control device 86 thus does not need to operate the compressed air pump to retract the dye 41.
  • the monitor 47 constantly monitors if there is enough dye 41 to label is. If the dye 41 is too low, the monitoring device 47 sends a message to the control device 86. During the marking process, the marking device 39 sends a signal to the control device 86.
  • the support member 55 may alternatively be formed as a rotatably mounted countershaft ,
  • the marked endless second material web 21 is fed to the corrugator device 5, wherein the corrugator device 5 generates the corrugated web 23 from the endless second material web 21.
  • the corrugated web 23 is provided with glue 33 in the first production device 6 and glued to the endless first material web 13 serving as a cover web to the corrugated web 2 laminated on one side.
  • the measuring device 28 measures the rotational speed of the second corrugating roller 27 and sends the measured speed measured values to the control device 86.
  • the connecting seams 14, 22 are generated by the splicing devices 3, 4 such that they are in the one-sided laminated corrugated web 2 are substantially congruent to each other.
  • the splicing devices 3, 4 are controllable such that the connecting seams 14, 22 can be synchronized.
  • the one-sided laminated corrugated web 2 of the memory device 34 is supplied, where it is cached in loops 38 and thus forms a buffer.
  • the single-faced laminated corrugated web 2 is in the transport direction 35 of the memory device beginning 36 is transported to the memory device end 37 and fed there to the detection device 60.
  • the attached color mark 40 is detected by means of the optical detector 62, wherein in the detection process, an electrical signal is sent to the control device 86.
  • the control device 86 calculates the web length L B of the cached corrugated cardboard laminated on one side.
  • Web 2 Alternatively, the described marking and detection process can be repeated periodically, so that color marks 40 are continuously applied and detected, so that a calculation of the web length L B can be repeated at short time intervals.
  • the current track length L B is constantly known.
  • a further electrical signal is sent, which is sent to the control device 86 and together with the electrical signal of the detection device 60, which is arranged at the memory device end 37, are used to calculate the web length L B.
  • the detection device 60 is designed as a gray scale button, which optically detects and detects the color mark 40 as a result of the color contrast to the endless second material web 21.
  • the single-faced laminated corrugated web 2 is fed to the second production device 61.
  • the corrugated web 23 of the one-sided laminated corrugated board web 2 is provided with glue 33 and by means of the Anpress-table 70 and the Anpress belt 71 with serving as the cover web endless third material web 65 to the two-sided laminated corrugated web 66 connected.
  • the endless third web of material 65 is provided by the third splice device 74, wherein the endless third web of material 65 is created by joining the finite webs of material 75, 78.
  • the mode of operation of the third splicing device 74 reference is made to the mode of operation of the first and second splicing devices 3, 4.
  • the third splice device 74 sends an electrical signal to the control device 86 with each connection so that it knows when a third connection seam 81 is generated.
  • the control device 86 controls the third splice device 74 as a function of the determined web length L B and the measured values of the rotational speed such that the third connecting seam 81 of the endless third material web 65 and the connecting seams 14, 22 to the one-sided laminated corrugated web 2 formed material webs 13, 21 are arranged substantially congruently one above the other in the double-faced laminated corrugated web 66.
  • the connecting seams 14, 22, 81 are thus synchronized in dependence on the determined path length L B by means of the control device 86.
  • the double-faced laminated corrugated web 66 is fed to the cross-cutting device 82, wherein the cross-cutting device 82 is controlled by the control device 86 such that the connecting seams 14, 22, 81 are separated in the two-sided laminated corrugated web 66.
  • the cross-cutting device 82 is easily controllable, wherein due to the synchronized connecting seams 14, 22, 81, the cross-cutting device 82 only has to be actuated once.
  • the marking device 39 and the detection device 60 are simple and robust in comparison to the prior art, so that the determination of the web length L B of the cached, one-sided laminated corrugated web 2 and the synchronization of the connecting seams 14, 22, 81 reliable, accurate and easy.
  • the present invention may also be applied to corrugated webs having more than three layers, for example, to five-ply corrugated webs.
  • the lengths of the corrugated webs lying on the storage devices 34 which are also referred to as bridges, for two bridges each having single-faced corrugated cardboard must be determined thereon.
  • all five splices to be performed can essentially be made to coincide. Due to the high transport speeds, the individual splices can still be separated from one another, even in the case of the synchronization described here, for example by 1 to 2 m, to be spaced. In any case, the splice synchronization described here greatly reduces the generated rejects. In particular, only once committee must be cut out.
  • the marking device 39 is formed such that in solid form existing dye 41 is attachable by rubbing as a color mark 40, a simple and reliable attachment of color marks 40 is ensured.
  • the marking device 39 is simple and robust, so that it - in comparison to known spray apparatus for applying liquids - cost and especially low maintenance.
  • the endless material webs 13, 21, 81 or corrugated webs made therefrom are not adversely damaged, as for example when spraying liquids or attaching deformation marks by deforming the corrugated webs ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Replacement Of Web Rolls (AREA)
  • Making Paper Articles (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

The system (1) has a marking device (39) provided in a transport direction (35) of a storing device (34) for applying a color mark at a corrugated board web (2). The marking device is formed as piston cylinder unit. A detecting device (60) is arranged downstream in the transport direction of the storing device for detecting the color mark. An electronic control device (86) determines web-length of the corrugated board web by the detected color mark. A chisel edge device cuts bilaterally laminated, corrugated board web depending on the determined web-length. An independent claim is also included for a method for manufacturing a corrugated board.

Description

Die Erfindung betrifft eine Wellpappe-Anlage und ein Verfahren zur Herstellung von Wellpappe.The invention relates to a corrugated board plant and a method for producing corrugated board.

Bekannte Wellpappe-Anlagen weisen zum Bereitstellen von endlosen Material-Bahnen mehrere Splice-Einrichtungen auf, die jeweils eine Vielzahl von endlichen Material-Bahnen zu einer endlosen Material-Bahn verbinden. Das Verbinden der endlichen Material-Bahnen zu einer endlosen Material-Bahn wird in der Fachsprache als Splicen und entsprechende Einrichtungen als Splice-Einrichtungen bezeichnet. Die endlosen Material-Bahnen weisen aufgrund des Verbindens Verbindungsnähte zwischen den endlichen Material-Bahnen auf, die als Splice bezeichnet werden. Die Verbindungsnähte der endlosen Material-Bahnen finden sich in der hergestellten Wellpappe-Bahn wieder und müssen dort aus Qualitätsgründen mittels einer Querschneide-Einrichtung herausgetrennt werden. Zum exakten Heraustrennen muss die Querschneide-Einrichtung erkennen, wo Verbindungsnähte in der Wellpappe-Bahn angeordnet sind. Problematisch dabei ist, dass in der Wellpappe-Anlage Speicher-Einrichtungen angeordnet sind, die zum Zwischenspeichern der Wellpappe-Bahn während der Herstellung dienen und die zur Folge haben, dass die Bahnlänge der zwischengespeicherten Wellpappe-Bahn nicht exakt bekannt ist.Known corrugated board plants have a plurality of splice devices for providing endless material webs, which each connect a plurality of finite material webs to form an endless material web. The joining of the finite material webs to an endless web of material is referred to in the jargon as splices and corresponding devices as splice devices. The endless webs of material have joining seams between the finite material webs, referred to as splices, due to the joining. The connecting seams of the endless material webs are found in the produced corrugated web again and must be separated there for quality reasons by means of a cross-cutting device. For exact removal, the cross-cutter must detect where seams are located in the corrugated web. The problem with this is that in the corrugated board storage devices are arranged, which serve for temporary storage of the corrugated web during manufacture and have the consequence that the web length of the cached corrugated web is not known exactly.

Aus der US 5,676,790 ist bekannt, die Wellpappe-Bahn vor dem Zwischenspeichern mittels eines Sprüh-Apparates mit einer Flüssigkeit, beispielsweise Wasser, zu besprühen, so dass sich ein Fleck auf der Wellpappe-Bahn ausbildet. Dieser wird nach dem Zwischenspeichern der Wellpappe-Bahn mittels eines thermischen Detektors detektiert, so dass mittels der Laufzeit des Flecks und weiterer bekannter Systemparameter die Bahnlänge der zwischengespeicherten Wellpappe-Bahn bestimmbar ist. Nachteilig dabei ist, dass das Aufsprühen der Flüssigkeit apparativ und verfahrenstechnisch aufwändig ist.From the US 5,676,790 It is known to spray the corrugated web before caching by means of a spray apparatus with a liquid, such as water, so that a stain forms on the web of corrugated cardboard. This is detected after the intermediate storage of the corrugated web by means of a thermal detector, so that by means of the duration of the spot and other known system parameters, the web length the cached corrugated web can be determined. The disadvantage here is that the spraying of the liquid is complicated in terms of apparatus and process technology.

Der Erfindung liegt die Aufgabe zugrunde, eine Wellpappe-Anlage und ein Verfahren zur Herstellung von Wellpappe zu schaffen, die ein einfaches und exaktes Heraustrennen von Verbindungsnähten in der Wellpappe-Bahn ermöglichen.The invention has for its object to provide a corrugated board and a method for producing corrugated cardboard, which allow a simple and accurate cutting out of seams in the corrugated web.

Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche 1 und 8 gelöst. Der Kern der Erfindung besteht darin, dass der mindestens einen Speicher-Einrichtung mindestens eine Markierungs-Einrichtung vorgeordnet ist, mittels der mindestens eine Farb-Marke an eine der Bahnen der Wellpappe-Bahn anbringbar ist. Die mindestens eine Markierungs-Einrichtung ist derart ausgebildet, dass ein in fester Form vorliegender Farbstoff als Farb-Marke anbringbar ist. Das Anbringen erfolgt durch Abreiben des festen Farbstoffs. Dadurch, dass der Farbstoff in fester Form vorliegt und in dieser Form anbringbar ist, werden aufwändige und wartungsintensive Sprüh-Apparate, wie dies beispielsweise bei einem Vorliegen des Farbstoffs in flüssiger Form ist, vermieden. Der Farbstoff kann beispielsweise als Signierkreide, Pastellkreide oder Ölkreide vorliegen. Dadurch, dass die mindestens eine Farb-Marke mittels eines in fester Form vorliegenden Farbstoffs angebracht wird, wird - im Gegensatz zu Flüssigkeiten - keine Feuchtigkeit in die Material-Bahnen eingebracht und diese somit nachteilig aufgeweicht. Die mindestens eine Farb-Marke ist mittels der mindestens einen Detektions-Einrichtung detektierbar, so dass in der mindestens einen Steuer-Einrichtung mittels der detektierten Farb-Marke die Bahnlänge der zwischengespeicherten Wellpappe-Bahn ermittelbar ist. Die mindestens eine Querschneide-Einrichtung ist in Abhängigkeit von der ermittelten Bahnlänge derart betätigbar, dass die Wellpappe-Bahn exakt zuschneidbar ist und somit Verbindungsnähte exakt heraustrennbar sind. Ein Bereitstellen von Flüssigkeit und ein Aufsprühen dieser Flüssigkeit mittels eines aufwändigen Sprüh-Apparats ist somit nicht länger erforderlich.This object is solved by the features of independent claims 1 and 8. The essence of the invention consists in that the at least one memory device is preceded by at least one marking device, by means of which at least one color mark can be attached to one of the webs of the corrugated web. The at least one marking device is designed such that a solid-form dye can be applied as a color mark. The attachment is carried out by rubbing off the solid dye. The fact that the dye is in solid form and can be attached in this form, complex and maintenance-intensive spray apparatus, as is the case for example when the dye is in liquid form, are avoided. The dye can be present, for example, as a signature chalk, pastel crayon or oil pastel. As a result of the fact that the at least one color mark is applied by means of a dye which is present in solid form, moisture is not introduced into the material webs, in contrast to liquids, and thus disadvantageously softened. The at least one color mark can be detected by means of the at least one detection device, so that the path length of the cached corrugated web can be determined in the at least one control device by means of the detected color mark. The at least one cross-cutting device is dependent on the determined web length can be actuated such that the corrugated web is accurately cut and thus connecting seams are exactly herausswennbar. Provision of liquid and spraying this liquid by means of a sophisticated sprayer is thus no longer required.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention will become apparent from the dependent claims.

Zusätzliche Merkmale und Einzelheiten der Erfindung ergeben sich aus der Beschreibung eines Ausführungsbeispiels anhand der Zeichnung. Es zeigen:

Fig. 1
einen ersten Teil einer Wellpappe-Anlage,
Fig. 2
einen zweiten Teil der Wellpappe-Anlage,
Fig. 3
einen vergrößerten Ausschnitt der Wellpappe-Anlage in Fig. 1 im Bereich einer Markierungs-Einrichtung,
Fig. 4
einen vergrößerten Ausschnitt der Wellpappe-Anlage in Fig. 1 im Bereich einer Detektor-Einrichtung,
Fig. 5
eine Schnittdarstellung durch die Markierungs-Einrichtung in Fig. 3, und
Fig. 6
eine ausschnittsweise Draufsicht auf eine mittels der Markierungs-Einrichtung in Fig. 3 markierte Wellpappe-Bahn.
Additional features and details of the invention will become apparent from the description of an embodiment with reference to the drawing. Show it:
Fig. 1
a first part of a corrugated board plant,
Fig. 2
a second part of the corrugated board plant,
Fig. 3
an enlarged section of the corrugated plant in Fig. 1 in the area of a marking facility,
Fig. 4
an enlarged section of the corrugated plant in Fig. 1 in the area of a detector device,
Fig. 5
a sectional view through the marking device in Fig. 3 , and
Fig. 6
a partial plan view of one by means of the marking device in Fig. 3 marked corrugated web.

Eine Wellpappe-Anlage 1 weist zur Herstellung einer einseitig kaschierten Wellpappe-Bahn 2 eine erste Splice-Einrichtung 3, eine zweite Splice-Einrichtung 4, eine Riffel-Einrichtung 5 und eine erste Produktions-Einrichtung 6 auf. Die erste Splice-Einrichtung 3 umfasst zum Abrollen einer endlichen ersten Material-Bahn 7 von einer ersten Material-Rolle 8 eine erste Abroll-Einheit 9 und zum Abrollen einer endlichen zweiten Material-Bahn 10 von einer zweiten Material-Rolle 11 eine zweite Abroll-Einheit 12. Die endliche erste und zweite Material-Bahn 7, 10 werden zum Bereitstellen einer endlosen ersten Material-Bahn 13 mittels einer nicht dargestellten Verbinde- und Schneid-Einheit der ersten Splice-Einrichtung 3 verbunden. Bei jedem Verbinden von endlichen Material-Bahnen 7, 10 entsteht in der endlosen Material-Bahn 13 eine erste Verbindungsnaht 14, die quer zu der endlosen ersten Material-Bahn 13 verläuft. Beispielhaft ist in Fig. 1 zwischen der ersten Splice-Einrichtung 3 und der ersten Produktions-Einrichtung 6 eine erste Verbindungsnaht 14 dargestellt.A corrugated board plant 1 has a first splice device 3, a second splice device 4, a corrugation device 5 and a first production device 6 for producing a single-sided laminated corrugated web 2. The first splicing device 3 comprises a first unrolling unit 9 for unrolling a finite first material web 7 from a first material reel 8 and a second unwinding unit 9 for unrolling a finite second material web 10 from a second material reel 11. Unit 12. The finite first and second webs of material 7, 10 are joined to provide an endless first web of material 13 by means of an unillustrated joining and cutting unit of the first splicing device 3. With each joining of the finite material webs 7, 10, a first connecting seam 14, which runs transversely to the endless first material web 13, is produced in the endless material web 13. Exemplary is in Fig. 1 between the first splicing device 3 and the first production device 6, a first connecting seam 14 is shown.

Die zweite Splice-Einrichtung 4 ist entsprechend der ersten Splice-Einrichtung 3 aufgebaut und umfasst zum Abrollen einer endlichen dritten Material-Bahn 15 von einer dritten Material-Rolle 16 eine dritte Abroll-Einheit 17 und zum Abrollen einer endlichen vierten Material-Bahn 18 von einer vierten Material-Rolle 19 eine vierte Abroll-Einheit 20. Die endliche dritte und vierte Material-Bahn 15, 18 werden zum Bereitstellen einer endlosen zweiten Material-Bahn 21 mittels einer nicht näher dargestellten Verbinde- und Schneid-Einheit der zweiten Splice-Einrichtung 4 miteinander verbunden. Bei jedem Verbinden von endlichen Material-Bahnen 15, 18 entsteht in der endlosen zweiten Material-Bahn 21 eine zweite Verbindungsnaht 22, die quer zu der endlosen zweiten Material-Bahn 21 verläuft. Beispielhaft ist zwischen der zweiten Splice-Einrichtung 4 und der Riffel-Einrichtung 5 eine zweite Verbindungsnaht 22 dargestellt.The second splicing device 4 is constructed in accordance with the first splicing device 3 and comprises for rolling a finite third material web 15 from a third material roll 16 a third unrolling unit 17 and for unrolling a finite fourth material web 18 of FIG a fourth roll of material 19; a fourth roll-off unit 20. The finite third and fourth sheets of material 15, 18 are used to provide an endless second web of material 21 by means of a non-illustrated joining and cutting unit of the second splice means 4 interconnected. Each time a finite material web 15, 18 is joined, a second seam 22 is formed in the endless second web of material 21, which extends transversely to the endless second web of material 21. By way of example, a second connecting seam 22 is shown between the second splicing device 4 and the corrugating device 5.

Bei der Herstellung von Wellpappe handelt es sich bei den endlosen Material-Bahnen 13, 21 um endlose Papier-Bahnen, wobei die Verbindungsnähte 14, 22 in diesen in der Fachsprache als Splice bezeichnet werden.In the manufacture of corrugated board, the endless webs of material 13, 21 are endless paper webs, the join seams 14, 22 being referred to in the jargon as a splice.

Die endlose zweite Material-Bahn 21 wird der Riffel-Einrichtung 5 zugeführt. Zum Erzeugen einer endlosen Well-Bahn 23 aus der endlosen zweiten Material-Bahn 21 weist die Riffel-Einrichtung 5 eine um eine erste Dreh-Achse 24 drehbar gelagerte erste Riffel-Walze 25 und eine um eine zweite Dreh-Achse 26 drehbar gelagerte zweite Riffel-Walze 27 auf. Die Riffel-Walzen 25, 27 bilden zum Durchführen und Riffeln der endlosen zweiten Material-Bahn 21 einen Spalt aus, wobei die Dreh-Achsen 24, 26 parallel zueinander verlaufen. An der zweiten Riffel-Walze 27 ist eine Mess-Einrichtung 28 zur Messung der Rotations-Geschwindigkeit der zweiten Riffel-Walze 27 angeordnet.The endless second material web 21 is fed to the corrugator device 5. For generating an endless corrugated web 23 from the endless second material web 21, the corrugator device 5 has a first corrugating roller 25 rotatably mounted about a first rotation axis 24 and a second corrugation rotatably mounted about a second rotation axis 26 Roll 27 on. The corrugating rolls 25, 27 form a gap for the passage and corrugation of the endless second material web 21, wherein the rotation axes 24, 26 run parallel to each other. On the second corrugating roll 27, a measuring device 28 for measuring the rotational speed of the second corrugating roll 27 is arranged.

Zum Verbinden der Well-Bahn 23 mit der endlosen ersten Material-Bahn 13 zu der einseitig kaschierten Wellpappe-Bahn 2 weist die erste Produktions-Einrichtung 6 eine erste Leimauftrags-Walze 29, eine erste Leimdosierungs-Walze 30, einen ersten Leim-Behälter 31 und eine erste Anpress-Walze 32 auf. Zum Durchführen und Beleimen der Well-Bahn 23 bildet die erste Leimauftrags-Walze 29 mit der zweiten Riffel-Walze 27 einen Spalt aus, wobei die erste Leimauftrags-Walze 29 zum Auftragen von Leim 33 teilweise innerhalb des ersten Leim-Behälters 31 angeordnet ist. Die erste Leim-Dosierungswalze 30 liegt gegen die erste Leimauftrags-Walze 29 an und dient zum Ausbilden einer gleichmäßigen Leimschicht auf der ersten Leimauftrags-Walze 29. Zum Anpressen der mit Leim 33 versehenen Well-Bahn 23 gegen die endlose erste Material-Bahn 13 bildet die erste Anpress-Walze 32 mit der zweiten Riffel-Walze 27 einen Spalt aus, durch den die endlose erste Material-Bahn 13 und die Well-Bahn 23 gleichzeitig geführt werden.To connect the corrugated web 23 with the endless first material web 13 to the single-faced corrugated web 2, the first production device 6 comprises a first glue application roller 29, a first glue metering roller 30, a first glue container 31 and a first pressing roller 32. For performing and gluing the corrugated web 23, the first glue application roller 29 forms a gap with the second corrugating roller 27, wherein the first glue application roller 29 for applying glue 33 is arranged partially within the first glue container 31. The first size metering roller 30 abuts against the first size coat roller 29 and serves to form a uniform size coat on the first size coat roller 29. For pressing the size 33 provided corrugated line 23 against the endless first material web 13 forms the first pressing roller 32 with the second corrugating roller 27 a gap, through which the endless first material web 13 and the corrugated web 23 are guided simultaneously.

Zum Zwischenspeichern und Puffern der einseitig kaschierten Wellpappe-Bahn 2 wird diese einer Speicher-Einrichtung 34 zugeführt, wobei die einseitig kaschierte Wellpappe-Bahn 2 in der Speicher-Einrichtung 34 eine Transport-Richtung 35 aufweist. Die einseitig kaschierte Wellpappe-Bahn 2 wird in der Speicher-Einrichtung 34 in Transport-Richtung 35 von einem Speicher-Einrichtungs-Anfang 36 zu einem Speicher-Einrichtungs-Ende 37 transportiert, wobei die einseitig kaschierte Wellpappe-Bahn 2 in der Speicher-Einrichtung 34 Schleifen 38 ausbildet. Die zwischengespeicherte, einseitig kaschierte Wellpappe-Bahn 2 weist zwischen dem Speicher-Einrichtungs-Anfang 36 und dem Speicher-Einrichtungs-Ende 37 eine Bahnlänge LB auf, die von der Länge der Speicher-Einrichtung 34 und der Anzahl der Schleifen 38 abhängig ist. Die Speicher-Einrichtung 34 ist tischartig ausgebildet und wird in der Fachsprache als Brücke bezeichnet.For temporarily storing and buffering the single-faced laminated corrugated web 2, it is fed to a storage device 34, wherein the single-faced corrugated web 2 in the storage device 34 has a transport direction 35. The single-faced laminated corrugated web 2 is transported in the storage device 34 in the transport direction 35 from a storage device start 36 to a storage device end 37, wherein the single-faced corrugated web 2 in the storage device 34 loops 38 forms. The cached, single-faced laminated corrugated web 2 has a web length L B between the memory device start 36 and the memory device end 37, which depends on the length of the memory device 34 and the number of loops 38. The memory device 34 is designed like a table and is referred to in the jargon as a bridge.

Der Speicher-Einrichtung 34 ist relativ zu der Transport-Richtung 35 eine Markierungs-Einrichtung 39 vorgeordnet. Die Markierungs-Einrichtung 39 dient zum Anbringen von Farb-Marken 40 auf die endlosen Material-Bahnen 21. Die Markierungs-Einrichtung 39 ist zwischen der zweiten Splice-Einrichtung 4 und der Riffel-Einrichtung 5 angeordnet, so dass die Farb-Marken 40 an eine Unterseite der zu wellenden endlosen zweiten Material-Bahn 21 anbringbar sind. Sinnvollerweise werden die Farb-Marken 40 vor der Verklebung in der Produktions-Einrichtung 6 aufgebracht, z. B. auch innerhalb der Splice-Einrichtung 4 oder bereits auf die Material-Rolle.The memory device 34 is preceded by a marking device 39 relative to the transport direction 35. The marking device 39 is used to apply color marks 40 to the endless material webs 21. The marking device 39 is arranged between the second splicing device 4 and the corrugating device 5, so that the color marks 40 on an underside of the endless second material web 21 to be corrugated can be attached. It makes sense, the color marks 40 are applied before bonding in the production device 6, z. B. also within the splicing device 4 or already on the material roll.

Die Markierungs-Einrichtung 39 ist derart ausgebildet, dass ein in fester Form als zylindrischer Stab vorliegender Farbstoff 41 als Farb-Marke 40 anbringbar ist. Der Farbstoff 41 besteht beispielsweise aus fester Signierkreide, fester Pastellkreide, fester Ölkreide oder ähnlichen zur Ausbildung von Farb-Marken 40 geeigneten Feststoffen. Die Markierungs-Einrichtung 39 ist als Kolben-Zylinder-Einheit ausgebildet, die einen als rohrförmiges Gehäuse ausgebildeten Zylinder 42 und einen in dem Zylinder 42 entlang einer Verlagerungs-Richtung 43 verlagerbaren Kolben 44 aufweist. Der Kolben 44 ist mit einer Halterung 45 verbunden, die einen als Kreideblock in fester Form vorliegenden Farbstoff 41 aufnimmt. Insbesondere ist der Kreideblock an die Halterung 45 angeklebt. Der Zylinder 42 weist stirnseitig eine erste Zylinder-Öffnung 46 auf, die derart ausgebildet ist, dass der Farbstoff 41 durch die erste Zylinder-Öffnung 46 beim Verlagern des Farbstoffs 41 durch einen Kunststoff-Führungsring 87 durchführbar ist. Nahe der ersten Zylinder-Öffnung 46 ist in dem Zylinder 42 eine Überwachungs-Einrichtung 47 in Form eines induktiven Näherungsschalters angeordnet, die zur Überwachung des Farbstoff-Standes dient. Gegenüberliegend zu der ersten Zylinder-Öffnung 46 weist der Zylinder 42 eine zweite Zylinder-Öffnung 48 auf. Die zweite Zylinder-Öffnung 48 ist von einem ZylinderDeckel 49 dicht verschlossen. Der Kolben 44 dient zur Lagerung von mehreren ringförmig ausgebildeten Rückstellelementen 52, die Rückstelllippen 53 aufweisen und auf dem Kolben 44 aufgebracht sind. Im Detail ist der Kolben 44 wie folgt aufgebaut: Die plattenförmige Halterung 45 ist mit einer Halte-Platte 88 über Schrauben 89 verschraubt. Die Halteplatte 88 weist mittig eine Bohrung 90 mit einem Innengewinde auf. Entgegen der Richtung 43 folgen neben der Halteplatte 88 abwechselnd die ringförmigen Rückstelllippen 53 und Stütz-Scheiben 91 - im vorliegenden Fall drei Paar. Der Block aus Scheiben 91 und Rückstelllippen 53 ist durch eine mittig angeordnete Schraube 92 zusammengehalten, die in die Halteplatte 88 geschraubt ist und den Kolben 44 zusammenhält.The marking device 39 is designed in such a way that a dye 41 in the form of a solid rod is used as the color mark 40 attachable. The dye 41 consists, for example, of solid crayon, solid pastel crayon, solid oil crayon or similar solids suitable for forming color marks 40. The marking device 39 is designed as a piston-cylinder unit which has a cylinder 42 designed as a tubular housing and a piston 42 displaceable in the cylinder 42 along a displacement direction 43. The piston 44 is connected to a holder 45, which receives a present as a chalk block in solid form dye 41. In particular, the chalk block is glued to the holder 45. The cylinder 42 has an end face a first cylinder opening 46 which is formed such that the dye 41 through the first cylinder opening 46 when moving the dye 41 by a plastic guide ring 87 is feasible. Near the first cylinder opening 46, a monitoring device 47 in the form of an inductive proximity switch, which serves to monitor the dye level, is arranged in the cylinder 42. Opposite to the first cylinder opening 46, the cylinder 42 has a second cylinder opening 48. The second cylinder opening 48 is sealed by a cylinder cover 49. The piston 44 serves to support a plurality of ring-shaped return elements 52 which have return lips 53 and are mounted on the piston 44. In detail, the piston 44 is constructed as follows: The plate-shaped holder 45 is screwed to a retaining plate 88 via screws 89. The holding plate 88 has centrally a bore 90 with an internal thread. Contrary to the direction 43 next to the support plate 88 alternately follow the annular return lips 53 and support discs 91 - in the present case, three pairs. The block of discs 91 and return lips 53 is held together by a centrally located screw 92, which is screwed into the retaining plate 88 and holds the piston 44 together.

Der Zylinder 42, der Kolben 44 und der Deckel 49 begrenzen im Wesentlichen einen Druckraum 54, der über ein Ventil 93 im Deckel 49 mit einem Fluid, beispielsweise mit Druckluft, befüllbar ist.The cylinder 42, the piston 44 and the cover 49 essentially define a pressure chamber 54, which can be filled via a valve 93 in the cover 49 with a fluid, for example with compressed air.

Die Markierungs-Einrichtung 39 ist relativ zu der endlosen zweiten Material-Bahn 21 derart angeordnet, dass die Verlagerungs-Richtung 43 im Wesentlichen senkrecht zu einer von der endlosen zweiten Material-Bahn 21 im Bereich der Markierungs-Einrichtung 39 aufgespannten Ebene verläuft. Ein Auflage-Bauteil 55 ist relativ zu der endlosen zweiten Material-Bahn 21 gegenüberliegend zu der Markierungs-Einrichtung 39 angeordnet. Das Auflage-Bauteil 55 ist plattenförmig ausgebildet. Alternativ kann das Auflage-Bauteil 55 auch als drehbar gelagerte Walze ausgebildet sein. Die Markierungs-Einrichtung 39 ist elektrisch-pneumatisch betätigbar, wobei zum Verlagern des Kolbens 44 eine elektrisch betätigbare Druckluft-Pumpe vorgesehen ist, die zum Befüllen des Druckraums 54 mit Druckluft vorgesehen ist. Die Markierungs-Einrichtung 39 ist relativ zu der endlosen zweiten Material-Bahn 21 derart angeordnet, dass diese in einem Randbereich 56 markierbar ist.The marking device 39 is arranged relative to the endless second material web 21 such that the displacement direction 43 is substantially perpendicular to a plane spanned by the endless second material web 21 in the region of the marking device 39. A rest member 55 is disposed relative to the endless second web of material 21 opposite the marker 39. The support member 55 is plate-shaped. Alternatively, the support member 55 may be formed as a rotatably mounted roller. The marking device 39 is electrically-pneumatically actuated, wherein for displacing the piston 44, an electrically actuated compressed air pump is provided, which is provided for filling the pressure chamber 54 with compressed air. The marking device 39 is arranged relative to the endless second material web 21 such that it can be marked in an edge region 56.

Zum Speichern der einseitig kaschierten Wellpappe-Bahn 2 in der Speicher-Einrichtung 34 sind an einer Verlängerung 57 der Speicher-Einrichtung 34 paarweise angeordnete Zufuhr-Walzen 58 angeordnet, die jeweils einen Führungs-Spalt 59 ausbilden, durch den die einseitig kaschierte Wellpappe-Bahn 2 der Speicher-Einrichtung 34 zugeführt wird.For storing the one-sided laminated corrugated web 2 in the storage device 34 34 arranged in pairs supply rollers 58 are arranged on an extension 57 of the storage device, each forming a guide gap 59 through which the one-sided laminated corrugated web 2 of the memory device 34 is supplied.

Zum Detektieren der Farb-Marken 40 ist der Speicher-Einrichtung 34 in der Transport-Richtung 35 eine Detektions-Einrichtung 60 nachgeordnet, wobei die Detektions-Einrichtung 60 zwischen der Speicher-Einrichtung 34 und einer zweiten Produktions-Einrichtung 61 angeordnet ist. Weiterhin kann eine Detektions-Einrichtung 60 zwischen der ersten Produktions-Einrichtung 6 und der Speicher-Einrichtung 34 vorgesehen sein.In order to detect the color marks 40, the memory device 34 is followed by a detection device 60 in the transport direction 35, the detection device 60 being arranged between the memory device 34 and a second production device 61. Farther For example, a detection device 60 may be provided between the first production device 6 and the storage device 34.

Die Detektions-Einrichtung 60 weist einen optischen Detektor 62 auf, der an einem Detektor-Träger 63 angeordnet ist. Der Detektor-Träger 63 ist an der Speicher-Einrichtung 34 befestigt und erstreckt sich im Wesentlichen quer zu dieser. An dem Detektor-Träger 63 sind zum Aufnehmen und Umlenken der einseitig kaschierten Wellpappe-Bahn 2 mehrere Umlenk-Walzen 64 drehbar gelagert. Die Umlenk-Walzen 64 sind derart an dem Detektor-Träger 63 angeordnet, dass die einseitig kaschierte Wellpappe-Bahn 2 mit den Farb-Marken 40 im Wesentlichen waagerecht an dem Detektor 62 vorbeiführbar ist.The detection device 60 has an optical detector 62 which is arranged on a detector carrier 63. The detector carrier 63 is attached to the memory device 34 and extends substantially transversely thereto. On the detector carrier 63 a plurality of deflection rollers 64 are rotatably mounted for receiving and deflecting the one-sided laminated corrugated web 2. The deflection rollers 64 are arranged on the detector carrier 63 in such a way that the corrugated board web 2 laminated on one side with the color marks 40 can be guided substantially horizontally past the detector 62.

Die zweite Produktions-Einrichtung 61 dient zum Verbinden der einseitig kaschierten Wellpappe-Bahn 2 mit einer als Deck-Bahn dienenden endlosen dritten Material-Bahn 65 zu einer zweiseitig kaschierten Wellpappe-Bahn 66. Die zweite Produktions-Einrichtung 61 weist zum Auftragen von Leim 33 auf die Well-Bahn 23 der einseitig kaschierten Wellpappe-Bahn 2 eine zweite Leimauftrags-Walze 67, eine zweite Leimdosierungs-Walze 68 und einen zweiten Leim-Behälter 69 auf. Zum Anpressen der endlosen dritten Material-Bahn 65 an die mit Leim 33 versehene einseitig kaschierte Wellpappe-Bahn 2 ist ein beheizbarer Anpress-Tisch 70 und ein endloser Anpress-Gurt 71 vorgesehen, die einen Anpress-Spalt 72 ausbilden. Der Anpress-Gurt 71 ist über drei Gurt-Umlenk-Walzen 73 umgelenkt und antreibbar.The second production device 61 serves to connect the corrugated web 2 laminated on one side with an endless third material web 65 serving as a cover web to a corrugated web 66 laminated on both sides. The second production device 61 has glue 33 applied to it on the corrugated web 23 of the single-faced laminated corrugated web 2, a second glue application roller 67, a second glue metering roller 68 and a second glue container 69 on. For pressing the endless third material web 65 to the glue 33 provided on one side laminated corrugated web 2, a heatable Anpress table 70 and an endless pressure belt 71 is provided which form a Anpress-gap 72. The pressure belt 71 is deflected by three belt deflection rollers 73 and driven.

Zum Bereitstellen der endlosen dritten Material-Bahn 65 ist eine dritte Splice-Einrichtung 74 vorgesehen. Die dritte Splice-Einrichtung 74 ist entsprechend den Splice-Einrichtungen 3, 4 ausgebildet und weist zum Abrollen einer endlichen fünften Material-Bahn 75 von einer fünften Material-Rolle 76 eine fünfte Abroll-Einheit 77 und zum Abrollen einer endlichen sechsten Material-Bahn 78 von einer sechsten Material-Rolle 79 eine sechste Abroll-Einheit 80 auf. Die dritte Splice-Einrichtung 74 weist ferner eine nicht dargestellte Verbinde- und Schneid-Einheit auf, mittels der die endlichen Material-Bahnen 75, 78 zu der endlosen dritten Material-Bahn 65 verbindbar sind. Bei jedem Verbinden von endlichen Material-Bahnen 75, 78 wird eine dritte Verbindungsnaht 81 erzeugt. Beispielhaft ist in Fig. 1 nach der dritten Splice-Einrichtung 74 eine dritte Verbindungsnaht 81 dargestellt. Bei der endlosen dritten Material-Bahn 65 handelt es sich ebenfalls um eine endlose Papier-Bahn.To provide the endless third material web 65, a third splice device 74 is provided. The third splicing device 74 is designed in accordance with the splicing devices 3, 4 and points to unrolling a fifth roll of material 75 from a fifth roll of material 76; a fifth roll-off unit 77; and for rolling a finite sixth sheet of material 78 from a sixth roll of material 79, a sixth roll-off unit 80. The third splice device 74 also has a connecting and cutting unit, not shown, by means of which the finite material webs 75, 78 are connectable to the endless third material web 65. Each time a finite material web 75, 78 is joined, a third seam 81 is created. Exemplary is in Fig. 1 after the third splice device 74, a third connecting seam 81 is shown. The endless third material web 65 is also an endless paper web.

Zum Zuschneiden der zweiseitig kaschierten Wellpappe-Bahn 66 ist eine Querschneide-Einrichtung 82 vorgesehen. Die Querschneide-Einrichtung 82 weist zwei Querschneide-Walzen 83 auf, die jeweils einen sich radial nach außen erstreckenden und quer zu der zweiseitig kaschierten Wellpappe-Bahn 66 verlaufenden Messerbalken 84 aufweisen. Die Querschneide-Walzen 83 bilden zum Durchführen der zweiseitig kaschierten Wellpappe-Bahn 66 einen Schneid-Spalt 85 aus, wobei die Querschneide-Walzen 83 drehantreibbar sind.For cutting the double-sided laminated corrugated web 66 a cross-cutting device 82 is provided. The cross-cutting device 82 has two transverse cutting rollers 83, each having a blade bar 84 extending radially outwards and extending transversely to the double-sided laminated corrugated board web 66. The cross-cutting rollers 83 form a cutting gap 85 for passing through the double-faced laminated corrugated web 66, wherein the cross-cutting rollers 83 are rotatably driven.

Zum Ansteuern der Wellpappe-Anlage 1 ist eine elektronische Steuer-Einrichtung 86 vorgesehen, die mit den Splice-Einrichtungen 3, 4, 74, mit der Mess-Einrichtung 28, mit der Markierungs-Einrichtung 39, mit der Detektions-Einrichtung 60 und mit der Querschneide-Einrichtung 82 in Signalverbindung steht. Die Signalverbindungen sind in den Fig. 1 und 2 mittels gestrichelter Linien dargestellt. Der Steuer-Einrichtung 86 werden von den Splice-Einrichtungen 3, 4, 74 Informationen derart bereitgestellt, dass der Steuer-Einrichtung 86 bekannt ist, wann ein Verbinden von endlichen Material-Bahnen 7, 10, 15, 18, 75, 78 und ein damit verbundenes Erzeugen von Verbindungsnähten 14, 22, 81 stattfindet. Weiterhin ist die Steuer-Einrichtung 86 derart ausgebildet, dass anhand von Messwerten der Mess-Einrichtung 28 und Steuersignalen der Markierungs-Einrichtung 39 und der Detektions-Einrichtung 60 beim Markieren und Detektieren von Farb-Marken 40 die Bahnlänge LB der in der Speicher-Einrichtung 34 zwischengespeicherten, einseitig kaschierten Wellpappe-Bahn 2 ermittelbar ist. In Abhängigkeit von der ermittelten Bahnlänge LB ist mittels der Steuer-Einrichtung 86 die Querschneide-Einrichtung 82 ansteuerbar.To control the corrugating machine 1, an electronic control device 86 is provided with the splice devices 3, 4, 74, with the measuring device 28, with the marking device 39, with the detection device 60 and with the cross cutter 82 is in signal communication. The signal connections are in the Fig. 1 and 2 represented by dashed lines. The control device 86 is provided by the splicing devices 3, 4, 74 with information such that the control device 86 knows when a connection of finite ones is known Material webs 7, 10, 15, 18, 75, 78 and an associated production of connecting seams 14, 22, 81 takes place. Furthermore, the control device 86 is designed such that, based on measured values of the measuring device 28 and control signals of the marking device 39 and the detection device 60 when marking and detecting color marks 40, the path length L B of the memory Device 34 cached, one-sided laminated corrugated web 2 can be determined. Depending on the determined web length L B , the cross-cutting device 82 can be controlled by means of the control device 86.

Der Querschneide-Einrichtung 82 kann eine in bekannter Weise ausgebildete Längsschneide-/Rill-Einrichtung vor- oder nachgeordnet sein. Weiterhin können der Querschneide-Einrichung 82 weitere Schneid-Einrichtungen zum Zuschneiden von Wellpappe-Bögen sowie Stapel-Einrichtungen zum Stapeln der Wellpappe-Bögen nachgeordnet sein.The cross-cutting device 82 may be arranged upstream or downstream of a longitudinal cutting / grooving device designed in a known manner. Furthermore, the cross-cutting device 82 may be followed by further cutting means for cutting corrugated sheets and stacking means for stacking the corrugated sheets.

Nachfolgend wird die Funktionsweise der Wellpappe-Anlage 1 beschrieben. Die erste Splice-Einrichtung 3 erzeugt die endlose erste Material-Bahn 13, die der ersten Produktions-Einrichtung 6 zugeführt wird. Das Erzeugen der endlosen ersten Material-Bahn 13 erfolgt beispielsweise derart, dass die endliche erste Material-Bahn 7 der zu Ende gehenden ersten Material-Rolle 8 mit der zweiten endlichen Material-Bahn 10 der zweiten neuen Material-Rolle 11 verbunden wird. Nach dem Verbinden wird die erste Abroll-Einheit 9 mit einer neuen ersten Material-Rolle 8 versehen, so dass die endlichen Material-Bahnen 7, 10 fortwährend zu der ersten endlosen Material-Bahn 13 verbunden werden können. Bei jedem Verbinden sendet die erste Splice-Einrichtung 3 ein Signal an die Steuer-Einrichtung 86, so dass diese weiß, wann eine erste Verbindungsnaht 14 erzeugt wird. Die zweite Splice-Einrichtung 4 erzeugt entsprechend zu der ersten Splice-Einrichtung 3 aus den endlichen Material-Bahnen 15, 18 die endlose zweite Material-Bahn 21. Bei jedem Verbinden sendet die zweite Splice-Einrichtung 4 ein Signal zu der Steuer-Einrichtung 86, so dass diese weiß, wann eine zweite Verbindungsnaht 22 erzeugt wird.The operation of the corrugated board plant 1 will be described below. The first splice device 3 generates the endless first material web 13, which is fed to the first production device 6. The production of the endless first material web 13 takes place, for example, in such a way that the finite first material web 7 of the ending first material roll 8 is joined to the second finite material web 10 of the second new material roll 11. After joining, the first unrolling unit 9 is provided with a new first material roll 8 so that the finite material webs 7, 10 can be continuously joined to the first endless web of material 13. On each connection, the first splice device 3 sends a signal to the control device 86 so that it knows when a first connection seam 14 is generated. The second splicing device 4 generates corresponding to the first splicing device 3 the endless web of material 15, 18, the endless second web of material 21. At each connection, the second splice device 4 sends a signal to the control device 86, so that this knows when a second joint 22 is generated.

Die zu wellende endlose zweite Material-Bahn 21 wird der Markierungs-Einrichtung 39 zugeführt. Zum Markieren der endlosen zweiten Material-Bahn 21 mit einer Farb-Marke 40 wird der Druckraum 54 mittels der von der Steuer-Einrichtung 86 elektrisch angesteuerten Druckluft-Pumpe mit Druckluft beaufschlagt. Aufgrund der Druckluft wird der Kolben 44 in die Verlagerungs-Richtung 43 bewegt, so dass der in fester Form vorliegende Farbstoff 41 durch die erste Zylinder-Öffnung 46 aus dem Zylinder 42 ausgefahren wird. Der Farbstoff 41 wird beim Ausfahren aus dem Zylinder 42 gegen die endlose zweite Material-Bahn 21 und diese gegen das Auflage-Bauteil 55 gepresst. Die zwischen dem Farbstoff 41 und dem Auflage-Bauteil 55 hindurchgeführte endlose zweite Material-Bahn 21 wird durch Abreiben des Farbstoffs 41 markiert, so dass eine Farb-Marke 40 erzeugt wird. Fig. 6 zeigt eine Farb-Marke 40. Diese kann in der Mitte oder am Rand der endlosen zweiten Material-Bahn 21 erzeugt werden. Die Länge der Farb-Marke 40 ist abhängig von der Geschwindigkeit der endlosen zweiten Material-Bahn 21 und der Zeitdauer des Anpressvorgangs. Die Rückstelllippen 53 der Rückstellelemente 52 ziehen aufgrund ihrer Eigenelastizität und Reibung gegenüber der Zylinder-Innenwand den Kolben 44 und den Farbstoff 41 selbsttätig in den Zylinder 42 zurück, z. B. um 2 bis 4 mm, wenn der Druck in der Kammer 54 reduziert wird.The endless second material web 21 to be corrugated is fed to the marking device 39. For marking the endless second material web 21 with a color mark 40, the pressure chamber 54 is acted upon by means of the electrically controlled by the control device 86 compressed air pump with compressed air. Due to the compressed air, the piston 44 is moved in the displacement direction 43, so that the solid-state dye 41 is extended through the first cylinder opening 46 from the cylinder 42. The dye 41 is pressed against the endless second material web 21 during extension from the cylinder 42 and against the support member 55. The endless second web of material 21 passed between the dye 41 and the support member 55 is marked by rubbing the dye 41 to form a color mark 40. Fig. 6 shows a color mark 40. This can be generated in the middle or at the edge of the endless second material web 21. The length of the color mark 40 is dependent on the speed of the endless second material web 21 and the duration of the pressing process. The restoring lips 53 of the return elements 52 pull the piston 44 and the dye 41 automatically back into the cylinder 42 due to their inherent elasticity and friction against the cylinder inner wall, z. B. by 2 to 4 mm, when the pressure in the chamber 54 is reduced.

Die Steuer-Einrichtung 86 muss zum Zurückziehen des Farbstoffs 41 somit die Druckluft-Pumpe nicht betätigen. Die Überwachungs-Einrichtung 47 überwacht ständig, ob genügend Farbstoff 41 zur Markierung vorhanden ist. Bei zuwenig Farbstoff 41 gibt die Überwachungs-Einrichtung 47 eine Meldung an die Steuer-Einrichtung 86 ab. Während des Markierungsvorgangs sendet die Markierungs-Einrichtung 39 ein Signal an die Steuer-Einrichtung 86. Vorzugsweise erfolgt das Anbringen der Farb-Marke 40 im Bereich vor den Verbindungsnähten 14, 22. Das Auflage-Bauteil 55 kann alternativ auch als drehbar gelagerte Gegenwelle ausgebildet sein.The control device 86 thus does not need to operate the compressed air pump to retract the dye 41. The monitor 47 constantly monitors if there is enough dye 41 to label is. If the dye 41 is too low, the monitoring device 47 sends a message to the control device 86. During the marking process, the marking device 39 sends a signal to the control device 86. Preferably, the application of the color mark 40 in the area in front of the connecting seams 14, 22. The support member 55 may alternatively be formed as a rotatably mounted countershaft ,

Die markierte endlose zweite Material-Bahn 21 wird der Riffel-Einrichtung 5 zugeführt, wobei die Riffel-Einrichtung 5 aus der endlosen zweiten Material-Bahn 21 die Well-Bahn 23 erzeugt. Die Well-Bahn 23 wird in der ersten Produktions-Einrichtung 6 mit Leim 33 versehen und mit der als Deck-Bahn dienenden endlosen ersten Material-Bahn 13 zu der einseitig kaschierten Wellpappe-Bahn 2 verklebt. Die Mess-Einrichtung 28 misst die Rotations-Geschwindigkeit der zweiten Riffel-Walze 27 und sendet die gemessenen Geschwindigkeits-Messwerte an die Steuer-Einrichtung 86. Die Verbindungsnähte 14, 22 werden mittels der Splice-Einrichtungen 3, 4 derart erzeugt, dass diese in der einseitig kaschierten Wellpappe-Bahn 2 im Wesentlichen deckungsgleich übereinander liegen. Aufgrund der bekannten Bahnlängen zwischen der ersten Splice-Einrichtung 3 und der ersten Produktions-Einrichtung 6 sowie zwischen der zweiten Splice-Einrichtung 4 und der ersten Produktions-Einrichtung 6 sind die Splice-Einrichtungen 3, 4 derart ansteuerbar, dass die Verbindungsnähte 14, 22 synchronisierbar sind.The marked endless second material web 21 is fed to the corrugator device 5, wherein the corrugator device 5 generates the corrugated web 23 from the endless second material web 21. The corrugated web 23 is provided with glue 33 in the first production device 6 and glued to the endless first material web 13 serving as a cover web to the corrugated web 2 laminated on one side. The measuring device 28 measures the rotational speed of the second corrugating roller 27 and sends the measured speed measured values to the control device 86. The connecting seams 14, 22 are generated by the splicing devices 3, 4 such that they are in the one-sided laminated corrugated web 2 are substantially congruent to each other. Due to the known track lengths between the first splicing device 3 and the first production device 6 and between the second splicing device 4 and the first production device 6, the splicing devices 3, 4 are controllable such that the connecting seams 14, 22 can be synchronized.

Nach dem Anbringen der Farb-Marke 40 an die endlose zweite Material-Bahn 2 wird die einseitig kaschierte Wellpappe-Bahn 2 der Speicher-Einrichtung 34 zugeführt, wo diese in Schleifen 38 zwischengespeichert wird und somit einen Puffer ausbildet. Die einseitig kaschierte Wellpappe-Bahn 2 wird in Transport-Richtung 35 von dem Speicher-Einrichtungs-Anfang 36 zu dem Speicher-Einrichtungs-Ende 37 transportiert und dort der Detektions-Einrichtung 60 zugeführt.After attaching the color mark 40 to the endless second material web 2, the one-sided laminated corrugated web 2 of the memory device 34 is supplied, where it is cached in loops 38 and thus forms a buffer. The single-faced laminated corrugated web 2 is in the transport direction 35 of the memory device beginning 36 is transported to the memory device end 37 and fed there to the detection device 60.

In der Detektions-Einrichtung 60 wird mittels des optischen Detektors 62 die angebrachte Farb-Marke 40 detektiert, wobei bei dem Detektionsvorgang ein elektrisches Signal an die Steuer-Einrichtung 86 gesendet wird. Mittels des Zeitabstandes der elektrischen Signale, die beim Anbringen und Detektieren der Farb-Marke 40 erzeugt werden, berechnet die Steuer-Einrichtung 86 zusammen mit der gemessenen Rotations-Geschwindigkeit der zweiten Riffel-Walze 27 die Bahnlänge LB der zwischengespeicherten, einseitig kaschierten Wellpappe-Bahn 2. Alternativ kann der beschriebene Markierungs- und Detektionsvorgang periodisch wiederholt werden, so dass fortwährend Farb-Marken 40 angebracht und detektiert werden, so dass eine Berechnung der Bahnlänge LB in kurzen Zeitabständen wiederholt werden kann. Somit ist ständig die aktuelle Bahnlänge LB bekannt. Alternativ kann mittels einer weiteren Detektions-Einrichtung 60, die nach der ersten Produktions-Einrichtung 6 im Bereich vor dem Speicher-Einrichtungs-Anfang 36 angeordnet ist, ein weiteres elektrisches Signal erzeugt werden, das an die Steuer-Einrichtung 86 gesendet wird und zusammen mit dem elektrischen Signal der Detektions-Einrichtung 60, die am Speicher-Einrichtungs-Ende 37 angeordnet ist, zur Berechnung der Bahnlänge LB verwendet werden.In the detection device 60, the attached color mark 40 is detected by means of the optical detector 62, wherein in the detection process, an electrical signal is sent to the control device 86. By means of the time interval of the electrical signals which are generated during the application and detection of the color mark 40, the control device 86, together with the measured rotational speed of the second corrugating roll 27, calculates the web length L B of the cached corrugated cardboard laminated on one side. Web 2. Alternatively, the described marking and detection process can be repeated periodically, so that color marks 40 are continuously applied and detected, so that a calculation of the web length L B can be repeated at short time intervals. Thus, the current track length L B is constantly known. Alternatively, by means of another detection device 60, which is arranged after the first production device 6 in the region in front of the memory device start 36, a further electrical signal is sent, which is sent to the control device 86 and together with the electrical signal of the detection device 60, which is arranged at the memory device end 37, are used to calculate the web length L B.

Die Detektions-Einrichtung 60 ist als Graustufentaster ausgebildet, der die Farb-Marke 40 in Folge des Farbkontrastes zu der endlosen zweiten Material-Bahn 21 optisch erkennt und detektiert.The detection device 60 is designed as a gray scale button, which optically detects and detects the color mark 40 as a result of the color contrast to the endless second material web 21.

Nach dem Detektieren der Farb-Marke 40 wird die einseitig kaschierte Wellpappe-Bahn 2 der zweiten Produktions-Einrichtung 61 zugeführt. In der zweiten Produktions-Einrichtung 61 wird die Well-Bahn 23 der einseitig kaschierten Wellpappe-Bahn 2 mit Leim 33 versehen und mittels des Anpress-Tisches 70 und des Anpress-Gurtes 71 mit der als Deck-Bahn dienenden endlosen dritten Material-Bahn 65 zu der zweiseitig kaschierten Wellpappe-Bahn 66 verbunden.After detecting the ink mark 40, the single-faced laminated corrugated web 2 is fed to the second production device 61. In the second production device 61, the corrugated web 23 of the one-sided laminated corrugated board web 2 is provided with glue 33 and by means of the Anpress-table 70 and the Anpress belt 71 with serving as the cover web endless third material web 65 to the two-sided laminated corrugated web 66 connected.

Die endlose dritte Material-Bahn 65 wird mittels der dritten Splice-Einrichtung 74 bereitgestellt, wobei die endlose dritte Material-Bahn 65 durch Verbinden der endlichen Material-Bahnen 75, 78 erzeugt wird. Hinsichtlich der Funktionsweise der dritten Splice-Einrichtung 74 wird auf die Funktionsweise der ersten und zweiten Splice-Einrichtung 3, 4 verwiesen. Die dritte Splice-Einrichtung 74 sendet bei jedem Verbinden ein elektrisches Signal an die Steuer-Einrichtung 86, so dass diese weiß, wann eine dritte Verbindungsnaht 81 erzeugt wird. Die Steuer-Einrichtung 86 steuert die dritte Splice-Einrichtung 74 in Abhängigkeit von der ermittelten Bahnlänge LB und der Messwerte der Rotations-Geschwindigkeit derart an, dass die dritte Verbindungsnaht 81 der endlosen dritten Material-Bahn 65 und die Verbindungsnähte 14, 22 der zu der einseitig kaschierten Wellpappe-Bahn 2 geformten Material-Bahnen 13, 21 im Wesentlichen deckungsgleich übereinander in der zweiseitig kaschierten Wellpappe-Bahn 66 angeordnet sind. Die Verbindungsnähte 14, 22, 81 werden somit in Abhängigkeit von der ermittelten Bahnlänge LB mittels der Steuer-Einrichtung 86 synchronisiert.The endless third web of material 65 is provided by the third splice device 74, wherein the endless third web of material 65 is created by joining the finite webs of material 75, 78. With regard to the mode of operation of the third splicing device 74, reference is made to the mode of operation of the first and second splicing devices 3, 4. The third splice device 74 sends an electrical signal to the control device 86 with each connection so that it knows when a third connection seam 81 is generated. The control device 86 controls the third splice device 74 as a function of the determined web length L B and the measured values of the rotational speed such that the third connecting seam 81 of the endless third material web 65 and the connecting seams 14, 22 to the one-sided laminated corrugated web 2 formed material webs 13, 21 are arranged substantially congruently one above the other in the double-faced laminated corrugated web 66. The connecting seams 14, 22, 81 are thus synchronized in dependence on the determined path length L B by means of the control device 86.

Die zweiseitig kaschierte Wellpappe-Bahn 66 wird der Querschneide-Einrichtung 82 zugeführt, wobei die Querschneide-Einrichtung 82 mittels der Steuer-Einrichtung 86 derart angesteuert wird, dass die Verbindungsnähte 14, 22, 81 in der zweiseitig kaschierten Wellpappe-Bahn 66 herausgetrennt werden. Durch das Synchronisieren der Verbindungsnähte 14, 22, 81 in Abhängigkeit von der ermittelten Bahnlänge LB ist die Querschneide-Einrichtung 82 einfach ansteuerbar, wobei aufgrund der synchronisierten Verbindungsnähte 14, 22, 81 die Querschneide-Einrichtung 82 lediglich einmal angesteuert werden muss. Aufgrund der bekannten Bahnlängen zwischen der Speicher-Einrichtung 34 und der Querschneide-Einrichtung 82 sowie zwischen der dritten Splice-Einrichtung 74 und der Querschneide-Einrichtung 82 ist das Ansteuern der dritten Splice-Einrichtung 74 und der Querschneide-Einrichtung 82 einfach möglich.The double-faced laminated corrugated web 66 is fed to the cross-cutting device 82, wherein the cross-cutting device 82 is controlled by the control device 86 such that the connecting seams 14, 22, 81 are separated in the two-sided laminated corrugated web 66. By synchronizing the seams 14, 22, 81 in FIG Dependent on the determined path length L B , the cross-cutting device 82 is easily controllable, wherein due to the synchronized connecting seams 14, 22, 81, the cross-cutting device 82 only has to be actuated once. Due to the known track lengths between the memory device 34 and the cross-cutter 82 as well as between the third splice device 74 and the cross-cutter 82, it is easily possible to drive the third splice device 74 and the cross-cutter 82.

Die Markierungs-Einrichtung 39 sowie die Detektions-Einrichtung 60 sind im Vergleich zum Stand der Technik einfach und robust aufgebaut, so dass das Ermitteln der Bahnlänge LB der zwischengespeicherten, einseitig kaschierten Wellpappe-Bahn 2 und das Synchronisieren der Verbindungsnähte 14, 22, 81 zuverlässig, exakt und einfach möglich ist.The marking device 39 and the detection device 60 are simple and robust in comparison to the prior art, so that the determination of the web length L B of the cached, one-sided laminated corrugated web 2 and the synchronization of the connecting seams 14, 22, 81 reliable, accurate and easy.

Aufgrund des Synchronisierens der Verbindungsnähte 14, 22, 75 können alle Verbindungsnähte 14, 22, 81 auf einmal herausgetrennt werden, so dass ein mehrfaches Heraustrennen einzelner Verbindungsnähte 14, 22, 81 vermieden wird.Due to the synchronization of the connecting seams 14, 22, 75, all connecting seams 14, 22, 81 can be cut out at once, so that a multiple separation of individual connecting seams 14, 22, 81 is avoided.

Die vorliegende Erfindung kann auch auf Wellpappe-Bahnen mit mehr als drei Lagen, beispielsweise auf fünflagige Wellpappe-Bahnen, angewendet werden. In diesem Fall müssen die Längen der auf den Speicher-Einrichtungen 34, die auch als Brücken bezeichnet werden, liegenden Wellpappe-Bahnen für zwei Brücken mit jeweils einseitig kaschierter Wellpappe darauf ermittelt werden. Auf diese Weise können alle fünf durchzuführenden Splice im Wesentlichen zur Deckung gebracht werden. Aufgrund der hohen Transportgeschwindigkeiten können die einzelnen Splice auch bei der vorliegend beschriebenen Synchronisation noch voneinander, beispielsweise um 1 bis 2 m, beabstandet sein. In jedem Fall wird durch die vorliegend beschriebene Splicesynchronisation der erzeugte Ausschuss stark reduziert. Insbesondere muss nur einmal Ausschuss herausgeschnitten werden. Dadurch, dass die Markierungs-Einrichtung 39 derart ausgebildet ist, dass in fester Form vorliegender Farbstoff 41 durch Abreiben als Farb-Marke 40 anbringbar ist, ist ein einfaches und zuverlässiges Anbringen von Farb-Marken 40 sichergestellt. Die Markierungs-Einrichtung 39 ist einfach und robust aufgebaut, so dass diese - im Vergleich zu bekannten Sprüh-Apparaten zum Aufbringen von Flüssigkeiten - kostengünstig und insbesondere wartungsarm ist. Durch das Anbringen von Farb-Marken 40 werden die endlosen Material-Bahnen 13, 21, 81 oder daraus hergestellte Wellpappe-Bahnen nicht nachteilig beschädigt, wie dies beispielsweise beim Aufsprühen von Flüssigkeiten oder beim Anbringen von Deformations-Marken durch Deformieren der Wellpappe-Bahnen erfolgt.The present invention may also be applied to corrugated webs having more than three layers, for example, to five-ply corrugated webs. In this case, the lengths of the corrugated webs lying on the storage devices 34, which are also referred to as bridges, for two bridges each having single-faced corrugated cardboard must be determined thereon. In this way, all five splices to be performed can essentially be made to coincide. Due to the high transport speeds, the individual splices can still be separated from one another, even in the case of the synchronization described here, for example by 1 to 2 m, to be spaced. In any case, the splice synchronization described here greatly reduces the generated rejects. In particular, only once committee must be cut out. Characterized in that the marking device 39 is formed such that in solid form existing dye 41 is attachable by rubbing as a color mark 40, a simple and reliable attachment of color marks 40 is ensured. The marking device 39 is simple and robust, so that it - in comparison to known spray apparatus for applying liquids - cost and especially low maintenance. By applying color marks 40, the endless material webs 13, 21, 81 or corrugated webs made therefrom are not adversely damaged, as for example when spraying liquids or attaching deformation marks by deforming the corrugated webs ,

Claims (10)

Wellpappe-Anlage zur Herstellung von Wellpappe, mit a. mindestens drei Splice-Einrichtungen (3, 4, 74) zum Bereitstellen von mindestens drei endlosen Material-Bahnen (13, 21, 65), b. mindestens einer Riffel-Einrichtung (5) zum Erzeugen von mindestens einer Well-Bahn (23) aus mindestens einer der Material-Bahnen (21), c. mindestens einer ersten Produktions-Einrichtung (6) zum Verbinden der mindestens einen Well-Bahn (23) mit mindestens einer weiteren Material-Bahn (13) zu mindestens einer einseitig kaschierten Wellpappe-Bahn (2), d. mindestens einer zweiten Produktions-Einrichtung (61) zum Verbinden der mindestens einen einseitig kaschierten Wellpappe-Bahn (2) mit mindestens einer weiteren Material-Bahn (65) zu mindestens einer zweiseitig kaschierten Wellpappe-Bahn (66), e. mindestens einer zwischen den Produktions-Einrichtungen (6, 61) angeordneten Speicher-Einrichtung (34) zum Zwischenspeichern der mindestens einen einseitig kaschierten Wellpappe-Bahn (2), f. mindestens einer in einer Transport-Richtung (35) der mindestens einen Speicher-Einrichtung (34) vorgeordneten Markierungs-Einrichtung (39) zum Anbringen mindestens einer Farb-Marke (40) an mindestens eine der Bahnen (2, 13, 21, 23), wobei die mindestens eine Markierungs-Einrichtung (39) derart ausgebildet ist, dass ein in fester Form vorliegender Farbstoff (41) als Farb-Marke (40) anbringbar ist, g. mindestens einer in der Transport-Richtung (35) der mindestens einen Speicher-Einrichtung (34) nachgeordneten Detektions-Einrichtung (60) zum Detektieren der mindestens einen Farb-Marke (40), h. mindestens einer elektronischen Steuer-Einrichtung (86) zum Ermitteln einer Bahnlänge (LB) der mindestens einen zwischengespeicherten Wellpappe-Bahn (2) mittels der mindestens einen angebrachten und detektierten Farb-Marke (40), und i. mindestens einer Querschneide-Einrichtung (82) zum Zuschneiden der mindestens einen zweiseitig kaschierten Wellpappe-Bahn (66) in Abhängigkeit von der ermittelten Bahnlänge (LB). Corrugated cardboard plant for the production of corrugated board, with a. at least three splicing devices (3, 4, 74) for providing at least three endless material webs (13, 21, 65), b. at least one corrugating device (5) for producing at least one corrugated web (23) from at least one of the material webs (21), c. at least one first production device (6) for connecting the at least one corrugated web (23) with at least one further material web (13) to at least one single-faced corrugated web (2), d. at least one second production device (61) for connecting the at least one corrugated cardboard web (2) laminated on one side to at least one further material web (65) to at least one double-sided laminated corrugated web (66), e. at least one storage device (34) arranged between the production devices (6, 61) for temporarily storing the at least one single-sided laminated corrugated cardboard web (2), f. at least one marking device (39) arranged in a transport direction (35) of the at least one memory device (34) for attaching at least one color mark (40) to at least one of the webs (2, 13, 21, 23) wherein the at least one marking device (39) is designed in such a way that a dye (41) in solid form can be applied as a color mark (40), G. at least one detection device (60) located downstream of the at least one memory device (34) in the transport direction (35) for detecting the at least one color mark (40), H. at least one electronic control device (86) for determining a web length (L B ) of the at least one cached corrugated web (2) by means of the at least one applied and detected color mark (40), and i. at least one cross-cutting device (82) for cutting the at least one double-sided laminated corrugated board web (66) as a function of the determined web length (L B ). Wellpappe-Anlage nach Anspruch 1, dadurch gekennzeichnet, dass die mindestens eine Markierungs-Einrichtung (39) in der Transport-Richtung (35) der mindestens einen ersten Produktions-Einrichtung (6) vorgeordnet ist.Corrugated cardboard plant according to claim 1, characterized in that the at least one marking device (39) in the transport direction (35) of the at least one first production device (6) is arranged upstream. Wellpappe-Anlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die mindestens eine Detektions-Einrichtung (60) zwischen der mindestens einen Speicher-Einrichtung (34) und der mindestens einen zweiten Produktions-Einrichtung (61) angeordnet ist.Corrugated cardboard plant according to claim 1 or 2, characterized in that the at least one detection device (60) is arranged between the at least one storage device (34) and the at least one second production device (61). Wellpappe-Anlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die mindestens eine Markierungs-Einrichtung (39) als Kolben-Zylinder-Einheit mit einem Zylinder (42) und einem in diesem verlagerbaren Kolben (44) ausgebildet ist.Corrugated cardboard plant according to one of claims 1 to 3, characterized in that the at least one marking device (39) as a piston-cylinder unit with a cylinder (42) and a displaceable in this piston (44) is formed. Wellpappe-Anlage nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die mindestens eine Detektions-Einrichtung (60) einen optischen Detektor (62) aufweist.Corrugated cardboard plant according to one of claims 1 to 4, characterized in that the at least one detection device (60) comprises an optical detector (62). Wellpappe-Anlage nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die mindestens eine Markierungs-Einrichtung (39) mindestens eine mit dem Kolben (44) verbundene Halterung (45) für den in fester Form vorliegenden Farbstoff (41) aufweist, die relativ zu einem Auflage-Bauteil (55) verlagerbar ist.Corrugated cardboard plant according to claim 4 or 5, characterized in that the at least one marking device (39) at least one having the piston (44) connected to the holder (45) for the solid-state dye (41) which is displaceable relative to a support member (55). Wellpappe-Anlage nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die mindestens eine Markierungs-Einrichtung (39) mindestens ein Rückstellelement (52) aufweist, das derart ausgebildet ist, dass der Kolben (44) selbsttätig zurückverlagerbar ist.Corrugated cardboard plant according to one of claims 4 to 6, characterized in that the at least one marking device (39) has at least one return element (52) which is designed such that the piston (44) is automatically zurückverlagerbar. Verfahren zur Herstellung von Wellpappe mit den Schritten: a. Bereitstellen von mindestens drei endlosen Material-Bahnen (13, 21, 65) mittels mindestens drei Splice-Einrichtungen (3, 4, 74), b. Erzeugen von mindestens einer Well-Bahn (23) aus mindestens einer der Material-Bahnen (21) mittels mindestens einer Riffel-Einrichtung (5), c. Verbinden der mindestens einen Well-Bahn (23) mit mindestens einer weiteren Material-Bahn (13) zu mindestens einer einseitig kaschierten Wellpappe-Bahn (2) mittels mindestens einer ersten Produktions-Einrichtung (6), d. Anbringen mindestens einer Farb-Marke (40) an mindestens eine der Bahnen (2, 12, 21, 23) mittels mindestens einer Markierungs-Einrichtung (39), wobei das Anbringen der mindestens einen Farb-Marke (40) durch Abreiben eines in fester Form vorliegenden Farbstoffs (41) erfolgt, e. Zwischenspeichern der mindestens einen markierten Wellpappe-Bahn (2) mittels mindestens einer Speicher-Einrichtung (34), f. Detektieren der mindestens einen Farb-Marke (40) zumindest nach dem Zwischenspeichern mittels mindestens einer Detektions-Einrichtung (60), g. Ermitteln einer Bahnlänge (LB) der mindestens einen zwischengespeicherten Wellpappe-Bahn (2) mittels der mindestens einen angebrachten und detektierten Farb-Marke (40) in mindestens einer elektronischen Steuer-Einrichtung (86), h. Verbinden der mindestens einen einseitig kaschierten Wellpappe-Bahn (2) mit mindestens einer weiteren Material-Bahn (65) zu mindestens einer zweiseitig kaschierten Wellpappe-Bahn (66) mittels mindestens einer zweiten Produktions-Einrichtung (61), und i. Zuschneiden der mindestens einen zweiseitig kaschierten Wellpappe-Bahn (66) in Abhängigkeit von der ermittelten Bahnlänge (LB) mittels mindestens einer Querschneide-Einrichtung (82). Process for the production of corrugated cardboard with the steps: a. Providing at least three endless material webs (13, 21, 65) by means of at least three splicing devices (3, 4, 74), b. Producing at least one corrugated web (23) from at least one of the material webs (21) by means of at least one corrugating device (5), c. Connecting the at least one corrugated web (23) with at least one further material web (13) to at least one corrugated web (2) laminated on one side by means of at least one first production device (6), d. Attaching at least one color mark (40) to at least one of the webs (2, 12, 21, 23) by means of at least one marking device (39), wherein attaching the at least one color mark (40) by rubbing a in solid Form present dye (41) takes place, e. Caching the at least one marked corrugated web (2) by means of at least one memory device (34), f. Detecting the at least one color mark (40) at least after buffering by means of at least one detection device (60), G. Determining a web length (L B ) of the at least one cached corrugated web (2) by means of the at least one applied and detected color mark (40) in at least one electronic control device (86), H. Connecting the at least one single-faced laminated corrugated web (2) to at least one further material web (65) to at least one double-sided laminated corrugated web (66) by means of at least one second production device (61), and i. Cutting the at least one double-sided laminated corrugated board web (66) as a function of the determined web length (L B ) by means of at least one cross-cutting device (82). Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass das Anbringen der mindestens einen Farb-Marke (40) derart erfolgt, dass diese in einem Randbereich (56) der mindestens einen einseitig kaschierten Wellpappe-Bahn (2) angeordnet ist.A method according to claim 8, characterized in that the attachment of the at least one color mark (40) takes place in such a way that it is arranged in an edge region (56) of the at least one single-sided laminated corrugated board web (2). Verfahren nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass mittels der mindestens einen Steuer-Einrichtung (86) mindestens eine der Splice-Einrichtungen (3, 4, 74) in Abhängigkeit von der ermittelten Bahnlänge (LB) derart angesteuert wird, dass mindestens zwei Verbindungsnähte (14, 22, 81) in mindestens zwei der endlosen Material-Bahnen (13, 21, 65) im Wesentlichen deckungsgleich übereinander in der zweiseitig kaschierten Wellpappe-Bahn (66) angeordnet sind.Method according to one of claims 8 or 9, characterized in that by means of the at least one control device (86) at least one of the splicing means (3, 4, 74) is controlled in dependence on the determined path length (L B ), in that at least two connecting seams (14, 22, 81) in at least two of the endless material webs (13, 21, 65) are arranged substantially congruently one above the other in the corrugated web (66) laminated on both sides.
EP08010255A 2007-06-13 2008-06-05 Corrugated cardboard system and method for manufacturing corrugated cardboard Not-in-force EP2002971B1 (en)

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US8241454B2 (en) 2012-08-14
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ATE550173T1 (en) 2012-04-15

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