EP0604531B1 - Appareil pour la production de carton ondulé - Google Patents

Appareil pour la production de carton ondulé Download PDF

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Publication number
EP0604531B1
EP0604531B1 EP92920069A EP92920069A EP0604531B1 EP 0604531 B1 EP0604531 B1 EP 0604531B1 EP 92920069 A EP92920069 A EP 92920069A EP 92920069 A EP92920069 A EP 92920069A EP 0604531 B1 EP0604531 B1 EP 0604531B1
Authority
EP
European Patent Office
Prior art keywords
corrugating rolls
flute
tip
corrugating
meshing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92920069A
Other languages
German (de)
English (en)
Other versions
EP0604531A4 (en
EP0604531A1 (fr
Inventor
Peter Robert Mckinlay
Neil William Shaw
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.)
Amcor Pty Ltd
Original Assignee
Amcor Pty Ltd
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 Amcor Pty Ltd filed Critical Amcor Pty Ltd
Publication of EP0604531A1 publication Critical patent/EP0604531A1/fr
Publication of EP0604531A4 publication Critical patent/EP0604531A4/en
Application granted granted Critical
Publication of EP0604531B1 publication Critical patent/EP0604531B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B31F1/2813—Making corrugated cardboard of composite structure, e.g. comprising two or more corrugated layers

Definitions

  • This invention relates to an apparatus for forming paper board structures in which two corrugated mediums are bonded together at their flute tips.
  • a structure of this kind is disclosed in AU-B-567833 which is incorporated herein by reference.
  • AU-B-609089 (11926/88) which is also incorporated herein by reference. Additionally there are variations of the basic apparatus as is currently disclosed in AU-B-615,053 which discloses the 4-roll apparatus wherein one of the corrugating rolls functions also as a carrier roll which transfers the bonded mediums to the liner bonding zone and also US-A-4,935,082 which replaces the carrier roll with the toothed belt.
  • the invention as described and defined herein is equally applicable to the variations of the basic apparatus; wherein flute tip to flute tip bonding is required.
  • the present invention is predicated on the discovery that the problem of maintaining the corrugating rolls flute tip to flute tip arises from the fact that the entire board making apparatus can generally lack rigidity. It is thought that the lack of rigidity is mainly attributable to the lack of rigidity in the support frame and also in the corrugating rolls and shafts which twist during operation. Thus as a result of movement of the corrugating rolls and the frame the flute tips of the rolls become misaligned.
  • the present invention provides an improvement in the basic apparatus and also the variations of the same as previously discussed.
  • the invention therefore provides in a first aspect a corrugated board making apparatus capable of forming corrugated boards having two fluted mediums bonded together at the flute tips, comprising at least two pairs of corrugating rolls synchronised so that the two fluted mediums are oriented for precise flute tip to flute tip bonding between a central pair of non-meshing corrugating rolls, characterised in that the flute tip to flute tip orientation is maintained by the provision of meshing helical or spur end gears mounted on the corrugating roll trunnions and abutting each end of each of said central pair of non-meshing corrugating rolls.
  • the present invention provides a corrugated board making apparatus capable of forming corrugated boards having two fluted mediums bonded together at the flute tips comprising at least two pairs of corrugating rolls synchronised so that the two fluted mediums are oriented for precise flute tip to flute tip bonding between a central pair of non-meshing corrugating rolls, characterised in that the flute tip to flute tip orientation is maintained by the provision of large diameter trunnions on each of said non-meshing corrugating rolls with meshing helical or spur end gears adjacent each end of each trunnion of said central pair of non-meshing corrugating rolls.
  • End gears are preferably but not essentially fitted to each end of each pair of central corrugating rolls and consist of one full face gear and one split face gear to allow adjustment of backlash.
  • the end gears are preferably abutting end gears and are preferably installed a short distance from the grooved face of each corrugating roll advantageously assisting in reducing the twisting of shafts.
  • the use of abutting end gears allows the use of conventional vacuum corrugating rolls with standard sized trunnions and minimises the torsional deflection which generally occurs.
  • By providing abutting end gears to both ends of the corrugating rolls the general rigidity of the apparatus and the reduction in the twisting of the shafts is further enhanced.
  • the end gears may be non-abutting end gears or can be fitted outside the vacuum collectors and also outside the machine frames.
  • Non-abutting gears can be used when the corrugating rolls have larger trunnions and thus the ability to resist the high torsional stresses arising from the point to point pressure occasioned during the tip to tip bonding process.
  • the end gears are preferably precision ground so that the intermeshing is precise.
  • the end gears can be spur gears or helical gears.
  • the gears may be split. If there are gears provided at each end they are preferably split at each end. The split gear may then mate with a gear of larger face width on the other corrugating roll. This arrangement assists in taking up backlash and allows transmission of at least 50% of the applied torque, thus preventing, further the twisting of the corrugating rolls and shafts.
  • the fitting of shims between the end faces of the corrugating rolls and the helical gears may be required when the helical gears are adjusted axially.
  • helical gears are fitted to both ends of the roll, the helices on each gear can be opposing to ensure thrust forces cancel each other out. If helical gears are only fitted to one end, additional thrust bearing capacity may be required to counteract the axial thrust created by the helical gears and prevent twisting of the corrugating rolls and shafts out of tip to tip alignment.
  • Figure 1 illustrates a single facer unit of the kind disclosed in Australian Patent AU-B-609089.
  • the corrugating medium, 1 and 2 maintained on mill roll stands (not shown) and generally passed over a preheater (not shown) is fed onto one (items 3 and 5) of a pair of corrugating rolls, 3 and 4 and 5 and 6.
  • the medium, 1 and 2 is corrugated and then adhesive is applied to at least one of the surfaces of 1 or 2, by an adhesive station 7.
  • the corrugated medium, 1 and 2 is then joined together flute tip to flute tip, when brought together by corrugating rolls 4 and 6.
  • the two combined corrugating mediums are fed onto the carrier roll 12 and after glue is applied to the flute tips, they are transported to the bonding zone wherein the liner 9 is brought into contact with the flute tips and heat applied by heater 11.
  • the carrier rolls 12 then transports the combined liner and mediums to a point where the product is fed into an inclined transport conveyor 14 for discharge on to the corrugator bridge.
  • the carrier roll 12 can be substituted with a toothed belt.
  • Figure 2 illustrates an embodiment of the present invention, wherein end gears 15A and 15B and 16A and 16B are fixed to the corrugating rolls 4 and 6 of the single facer unit which are the corrugating rolls which align and bond the corrugated medium in flute tip to flute tip arrangement.
  • This embodiment illustrates the use of the split spur gears 15A and 15B and 16A and 16B abutting the corrugating rolls 4 and 6. It should be noted that in order to maximise the rigidity of the apparatus and the reduction of twisting in the aligning corrugating rolls, end gears should be placed at each end of the aligning corrugating rolls.
  • the end gears 15A and 15B and 16A and 16B in this embodiment fit within the space between the vacuum collector 17 and the corrugating rolls 6 and 4.
  • the vacuum collectors 17 and connections therefrom to the corrugating rolls 4 and 6 can pass through the end gears 15A, 15B, 16A and 16B to communicate with the corrugating rolls 6 and 4.
  • the vacuum collectors 17 are spring-loaded by spring arrangement 19 to ensure a secure but resilient contact between the end gears (15A, 15B, 16A and 16B) and the vacuum collector system 17.
  • the end gears need not always abut the corrugating rolls and this is dependent on the diameter of the corrugating rolls with larger diameter shafts.
  • the end gears need not abut the rolls and can be even housed outside of the main housing.
  • vacuum is not used to assist in retaining and carrying the cardboard on the corrugating roll and the alternative fingers are used, it is possible to separate the end gears away from the corrugating rolls, since larger rolls can be used.
  • the diameter of the corrugating rolls and shafts may be limited in order to produce the desired flute pitch and depth. In these cases it may be necessary to abut the end gears in order to maximise the rigidity of the apparatus.
  • split spur gear 16A is extended to assist in taking up backlash and allow transmission of the applied torque.
  • face width of the end gears is governed by the braking torque required which as a general rule is at least three (3) times the drive torque created.
  • End gear 16A and 16B is driven by its cooperation with end gears 15A and 15B and drives the carrier rolls 12 via a ring gear (not shown) attached to the carrier roll 12.
  • the end gears can drive a toothed belt if used.
  • the end gears 15A and 15B and 16A and 16B may be fixed to the shafts of the corrugating rolls 4 and 6 by any locking assembly, for example multi-taper lock sleeves, item 21.
  • the only requirement of the locking assembly is that the gears are precisely retained in position to transmit high peripheral forces without circumferential movement.
  • fixing screws 20 may be used which also allow for adjustment of the gears relative to each other in order to reduce backlash.
  • fixing screws 20 can also be incorporated on split gears 16A and 16B.
  • the end gears 15A, 15B, 16A and 16B depending on their proximity to the corrugating rolls may have a shroud (not shown) shielding the board being processed and preventing entanglement of the board in the rotating end gears.
  • end gears must be applied to at least the corrugating rolls which are directly involved in flute-tip to flute-tip bonding
  • end gears can be applied to other rolls such as carrier rolls, or toothed belt mechanisms.
  • the frame 18 may also be reinforced and/or improved in order to increase frame rigidity and thus generally greater apparatus rigidity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)

Claims (8)

  1. Un appareil pour la production de carton ondulé capable de produire des cartons ondulés comportant deux média à cannelures collés l'un à l'autre au niveau des sommets des cannelures, comprenant deux paires de rouleaux à onduler (3,4;5,6) synchronisés de telle manière que les deux média à cannelures soient orientés en vue d'un encollage précis de sommet de cannelure à sommet de cannelure entre une paire centrale de rouleaux à onduler sans engrenage (4,6), caractérisé par le fait que l'orientation d'un sommet de cannelure par rapport à l'autre est maintenue constante grâce à des engrenages hélicoïdaux ou à roue droite (15A,15B,16A,16B) montés sur les tourillons des rouleaux à onduler et aboutant chaque extrémité de chacune desdites paires centrales des rouleaux à onduler sans engrenage (4,6).
  2. Un appareil pour la production de carton ondulé capable de produire des cartons ondulés comportant deux média à cannelures collés l'un à l'autre au niveau des sommets des cannelures, comprenant deux paires de rouleaux à onduler (3,4;5,6) synchronisés de telle manière que les deux média à cannelures soient orientés en vue d'un encollage précis de sommet de cannelure à sommet de cannelure entre une paire centrale de rouleaux à onduler sans engrenage (4,6), caractérisé par le fait que l'orientation d'un sommet de cannelure par rapport à l'autre est maintenue constante grâce à des tourillons de grand diamètre montés sur chacun desdits rouleaux à onduler sans engrenage, les engrenages hélicoïdaux ou à roue droite (15A,15B,16A,16B) étant adjacents à chaque extrémité de chaque tourillon de ladite paire centrale de rouleaux à onduler sans engrenage (4,6).
  3. Un appareil ainsi revendiqué à l'une quelconque des revendications 1 ou 2, dans lequel les vitesses de surface des rouleaux à onduler (4,6) dont les cannelures sont alignées avec précision sommet contre sommet sont identiques.
  4. Un appareil ansi revendiqué à l'une quelconque des revendications précédentes dans lequel au moins l'un des engrenages d'extrémité est fendu.
  5. Un appareil ainsi revendiqué à la revendication 4 dans lequel l'un des engrenages de l'un des rouleaux à onduler possède un côté élargi et l'engrenage d'extrémité fendu opère de concert avec ledit engrenage à côté élargi afin de contribuer à absorber le jeu de transmission.
  6. Un appareil ainsi revendiqué à l'une quelconque des revendications précédentes, qui comprend une pompe à vide (17), dans lequel est aménagé un espacement entre ladite pompe à vide (17) et les deux rouleaux à onduler (4,6), et dans lequel lesdits engrenages d'extrémité (15A,15B,16A,16B) sont montés à l'intérieur dudit espacement.
  7. Un appareil ainsi revendiqué à l'une quelconque des revendications précédentes, qui comprend un rouleau de support et dans lequel les engrenages d'extrémité sont également appliqués au rouleau de support susmentionné.
  8. Un appareil ainsi revendiqué à l'une quelconque des revendications précédentes, dans lequel les engrenages d'extrémité (15A,15B,16A,16B) réduisent la contrainte de torsion au niveau des arbres des rouleaux à onduler (3,4;5,6).
EP92920069A 1991-09-17 1992-09-16 Appareil pour la production de carton ondulé Expired - Lifetime EP0604531B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPK835991 1991-09-17
AU8359/91 1991-09-17
PCT/AU1992/000486 WO1993005957A1 (fr) 1991-09-17 1992-09-16 Production de carton ondule et appareil approprie

Publications (3)

Publication Number Publication Date
EP0604531A1 EP0604531A1 (fr) 1994-07-06
EP0604531A4 EP0604531A4 (en) 1994-08-17
EP0604531B1 true EP0604531B1 (fr) 1996-12-18

Family

ID=3775684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92920069A Expired - Lifetime EP0604531B1 (fr) 1991-09-17 1992-09-16 Appareil pour la production de carton ondulé

Country Status (17)

Country Link
EP (1) EP0604531B1 (fr)
JP (1) JP3428985B2 (fr)
CN (1) CN1040407C (fr)
AT (1) ATE146399T1 (fr)
AU (1) AU655076B2 (fr)
BR (1) BR9206502A (fr)
CA (1) CA2115352C (fr)
DE (1) DE69216102T2 (fr)
DK (1) DK0604531T3 (fr)
FI (1) FI110676B (fr)
HK (1) HK1005440A1 (fr)
MY (1) MY107173A (fr)
NO (1) NO316214B1 (fr)
NZ (1) NZ244327A (fr)
SG (1) SG43910A1 (fr)
WO (1) WO1993005957A1 (fr)
ZA (1) ZA927074B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0183515B1 (ko) * 1995-04-11 1999-04-15 김승무 2중 골심판지 및 그 성형방법과 장치
AUPN367095A0 (en) * 1995-06-20 1995-07-13 Amcor Limited Corrugated board manufacture
AU703704B2 (en) * 1996-03-14 1999-04-01 Orora Packaging Australia Pty Ltd Improvements in corrugated paperboard machinery
AUPN865896A0 (en) * 1996-03-14 1996-04-04 Amcor Limited Improvements in corrugated paperboard machinery

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6232386A (en) * 1985-09-04 1987-04-02 Amcor Limited Corrugated paper board
AU1192688A (en) * 1987-02-18 1988-08-25 Amcor Limited Manufacturing corrugated board
AU3361089A (en) * 1988-03-31 1989-10-16 Amcor Limited Manufacturing corrugated board

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB145854A (en) * 1919-03-29 1920-06-29 William Grant Fiske Improvements in or relating to corrugated cardboard, strawboard, fibreboard and the like
US1802522A (en) * 1926-05-21 1931-04-28 Moll Jacob Corrugated cardboard
US2576281A (en) * 1950-06-09 1951-11-27 Aloysius J Carr Corrugating machine
US4196046A (en) * 1978-06-12 1980-04-01 Weyerhaeuser Company Adjuster for corrugating rolls
BR8800608A (pt) * 1987-02-18 1988-09-27 Amcor Ltd Aparelho e metodo para fabricar papelao corrugado de face unica
CA1312540C (fr) * 1987-12-18 1993-01-12 Peter Gordon Bennett Appareil servant a former des ouvrages en carton ondule, et methode connexe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6232386A (en) * 1985-09-04 1987-04-02 Amcor Limited Corrugated paper board
AU1192688A (en) * 1987-02-18 1988-08-25 Amcor Limited Manufacturing corrugated board
AU3361089A (en) * 1988-03-31 1989-10-16 Amcor Limited Manufacturing corrugated board

Also Published As

Publication number Publication date
DE69216102D1 (de) 1997-01-30
EP0604531A4 (en) 1994-08-17
FI110676B (fi) 2003-03-14
NO940923L (no) 1994-03-15
MY107173A (en) 1995-09-30
ATE146399T1 (de) 1997-01-15
FI941232A (fi) 1994-03-16
DK0604531T3 (da) 1997-06-09
WO1993005957A1 (fr) 1993-04-01
SG43910A1 (en) 1997-11-14
NO940923D0 (no) 1994-03-15
AU655076B2 (en) 1994-12-01
CA2115352A1 (fr) 1993-04-01
AU2576892A (en) 1993-04-27
CN1040407C (zh) 1998-10-28
NO316214B1 (no) 2003-12-29
JP3428985B2 (ja) 2003-07-22
ZA927074B (en) 1993-03-30
HK1005440A1 (en) 1999-01-08
DE69216102T2 (de) 1997-07-03
FI941232A0 (fi) 1994-03-16
CN1071621A (zh) 1993-05-05
JPH06510494A (ja) 1994-11-24
CA2115352C (fr) 2002-07-16
BR9206502A (pt) 1995-10-17
NZ244327A (en) 1994-03-25
EP0604531A1 (fr) 1994-07-06

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